diff --git a/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.i18n.yaml b/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.i18n.yaml
index 511e290621..e0b3e158eb 100644
--- a/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.i18n.yaml
+++ b/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.i18n.yaml
@@ -9,8 +9,8 @@
   en: edefff7cd986a509
   zh: a270839fa86976a2
 /agent-note-guided-plugin-installation/decision:
-  en: 5448b9f8aaa9a569
-  zh: 9024c5328c5da3bd
+  en: ca0224ae08a4b383
+  zh: 780603ca24487949
 /agent-note-guided-plugin-installation/alternatives-considered:
   en: be64b541f4d81e7c
   zh: 8600531c08ab4288
diff --git a/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.md b/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.md
index 40cbf6179b..aa62340f84 100644
--- a/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.md
+++ b/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.md
@@ -14,7 +14,7 @@ The install dialog put a spec straight into `pnpm add` and showed pnpm's termina
 
 **A failed or cancelled installation restores the profile files.** `installBundle` snapshots `package.json` and `pnpm-lock.yaml` before pnpm runs and puts them back when pnpm fails, when the run is cancelled, or when the package pnpm added declares no bundle patch. This reverses, for installations only, the [manager's decision](2026-09-14-current-profile-plugin-management.md) to retain partial changes: an installation that did not produce a usable bundle must not leave a dependency the page cannot show. Removals keep that decision. Downloaded files can stay under `node_modules` and the pnpm store.
 
-**A failed run is classified where the facts are.** `classifyInstallFailure` reads how the run ended and what pnpm printed — its `ERR_PNPM_*` codes and Node's errno names — into `packageResult.kind`. A run the manager terminated is classified `timeout` whatever exit status the signal left behind, so installation restores the files and removal reports failure instead of reading it as a success ([run bounds](../../../../packages/boot/plugin-manager/README.md)). The client shows the kind as one line and folds pnpm's output behind the details. Parsing the log is confined to this one function with a fixture-driven test.
+**A failed run is classified where the facts are.** `classifyInstallFailure` reads how the run ended and what pnpm printed — its `ERR_PNPM_*` codes and Node's errno names — into `packageResult.kind`. A run the manager terminated is classified `timeout` whatever exit status the signal left behind, so installation restores the files and removal reports failure instead of reading it as a success ([run bounds](../../../../packages/boot/plugin-manager/README.md)). The client shows the kind as one line and folds pnpm's output behind the details, which also name the complete log and a failure that stopped before pnpm ran ([details](../bug-fix/2026-10-28-plugin-install-failure-diagnostics.md)). Parsing the log is confined to this one function with a fixture-driven test.
 
 **GitHub connection failures have a short budget before installation.** The Host runs a read-only `git ls-remote` check with the profile's Git and proxy configuration and a default `githubConnectionTimeoutMs` of 5000 ms. Credential helpers and prompts are disabled for this check, so authentication cannot consume the connection budget. Only network failures and timeouts prevent pnpm from starting; pnpm still owns authentication, HTTPS-to-SSH fallback, ref resolution and the full installation. The budget does not limit downloads or builds. The existing failure kind and `failedAt: 'spec-host'` let the Client show a connection error or timeout and offer a domestic registry for a replacement package spec. Cancellation and manager disposal terminate the check and its descendants before settling.
 
diff --git a/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.zh.md b/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.zh.md
index c53c138059..09c2c2e572 100644
--- a/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.zh.md
+++ b/.agents/notes/implemented/architecture/2026-09-15-guided-plugin-installation.zh.md
@@ -14,7 +14,7 @@ Status: implemented
 
 **失败或被取消的安装恢复 profile 文件。** `installBundle` 在 pnpm 运行前快照 `package.json` 与 `pnpm-lock.yaml`，在 pnpm 失败、运行被取消、或 pnpm 装入的包没有声明组合包 patch 时把它们放回去。这只针对安装反转了[管理器的决定](2026-09-14-current-profile-plugin-management.zh.md)中"保留部分改动"的部分：没有产出可用组合包的安装，不能留下一个页面无法显示的依赖。删除仍沿用那个决定。已下载文件可能留在 `node_modules` 与 pnpm 缓存中。
 
-**失败在事实所在处分类。** `classifyInstallFailure` 依据运行的结束方式和 pnpm 的输出——它的 `ERR_PNPM_*` 码和 Node 的 errno 名——给出 `packageResult.kind`。被管理器终止的运行，不论信号留下什么退出状态都归类为 `timeout`，因此安装会还原文件，删除则报告失败而不会读成成功（[运行上界](../../../../packages/boot/plugin-manager/README.zh.md)）。客户端把 kind 显示成一句话，把 pnpm 输出折叠进详情。对日志的解析只存在于这一个函数，用夹具驱动的测试钉住。
+**失败在事实所在处分类。** `classifyInstallFailure` 依据运行的结束方式和 pnpm 的输出——它的 `ERR_PNPM_*` 码和 Node 的 errno 名——给出 `packageResult.kind`。被管理器终止的运行，不论信号留下什么退出状态都归类为 `timeout`，因此安装会还原文件，删除则报告失败而不会读成成功（[运行上界](../../../../packages/boot/plugin-manager/README.zh.md)）。客户端把 kind 显示成一句话，把 pnpm 输出折叠进详情；详情还会指出完整日志，以及尚未运行 pnpm 就停下的一次失败（[详情](../bug-fix/2026-10-28-plugin-install-failure-diagnostics.zh.md)）。对日志的解析只存在于这一个函数，用夹具驱动的测试钉住。
 
 **GitHub 连接失败在安装前有单独的短时限。** 宿主通过只读的 `git ls-remote` 检查连接，沿用 profile 的 Git 与代理配置，`githubConnectionTimeoutMs` 默认为 5000 毫秒。这次检查禁用凭据助手和认证提示，避免认证过程占用连接预算。只有网络失败与超时会阻止 pnpm 启动；认证、HTTPS 到 SSH 的回退、ref 解析及完整安装仍由 pnpm 负责。时限不约束下载或构建。已有的失败类型与 `failedAt: 'spec-host'` 让客户端显示连接失败或超时，并提供国内镜像供用户输入另一个包名。取消安装或销毁管理器会先终止检查及其子进程，再结束操作。
 
diff --git a/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.i18n.yaml b/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.i18n.yaml
index 04a53081d6..dc596b4fae 100644
--- a/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.i18n.yaml
+++ b/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.i18n.yaml
@@ -9,8 +9,8 @@
   en: 386864a282e5ad58
   zh: a4ea75ec70eb7778
 /agent-note-shared-native-cua-process-with-agent-scoped-state/decision:
-  en: ebf231a6aad109bb
-  zh: 53b553e679569da1
+  en: 11bab6870c3d802f
+  zh: a22114f2217a3a41
 /agent-note-shared-native-cua-process-with-agent-scoped-state/alternatives-considered:
   en: 883f71387f599160
   zh: 4b5f1450be799397
diff --git a/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.md b/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.md
index 1bc795dd52..8e986aaa2f 100644
--- a/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.md
+++ b/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.md
@@ -12,6 +12,8 @@ On macOS 26.6.2, replayd derives capture-client identity from the executable pat
 
 One user shares a native service per executable content digest across Agents and Hosts. A version lock elects the service; an additional canonical-executable-path lock prevents different builds published at one path from running together. Locks remain held until process exit. The managed startup command hands service lifetime to its client connections, and the last connection's completed cleanup ends the service. The diagnostic stdin/stdout entry proxies to this same service.
 
+The service runs as a signed application launched through LaunchServices. Directly spawning the executable inherits its launcher’s TCC responsibility, so it cannot give the helper independent system permissions. A launch lock serializes discovery and startup. Complete signed applications use immutable content-addressed directories: replacing an executable used by a live process would violate both path-lock ownership and code-signature integrity. Ad-hoc builds can require fresh grants when their code hash changes; a stable bundle identifier alone does not preserve those grants. Installed packages retain their distributed signatures.
+
 Each Agent connection owns its application handles, AX snapshots, limits and cancellation state. An app handle grants no exclusive use of the application. A FIFO orders complete desktop operations, including clipboard transactions, while response writes are independent. Agent disposal retires only its connection. The [object API decision](2026-09-17-experimental-cua-object-api.md) retains evaluator independence and coordinate semantics; the [consent decision](2026-09-26-cua-application-consent.md) retains application authorization.
 
 Cancellation and timeout first stop one request and wait for acknowledgement. A timed-out screenshot retains the single system-RPC slot until the real callback completes; new screenshots fail with `CAPTURE_BUSY` instead of accumulating requests. Late pixels are discarded, while other AX and input operations remain available. Ending an await or creating a wrapper does not prove that the system connection has recovered. An operation or cleanup that cannot stop can invalidate the process, making every old handle unusable. Uncertain input is never replayed automatically.
diff --git a/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.zh.md b/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.zh.md
index c40d277837..371ae5cc3a 100644
--- a/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.zh.md
+++ b/.agents/notes/implemented/architecture/2026-10-09-cua-shared-native-helper.zh.md
@@ -12,6 +12,8 @@ Status: implemented
 
 同一用户的多个 Agent 和 Host 按可执行文件内容摘要共享原生服务。版本锁选出服务实例，规范化可执行路径上的另一把锁阻止发布在同一路径的不同构建同时运行。进程退出才释放锁。受管启动命令将服务生命期交给客户端连接，最后一条连接清理完成后服务退出。诊断用 stdin/stdout 入口也代理到同一个服务。
 
+服务通过 LaunchServices 以已签名应用运行。直接启动可执行文件会继承启动器的 TCC 责任，无法让 helper 独立取得系统权限。启动锁串行处理发现与启动。完整签名应用保存在不可变的内容寻址目录中，替换运行中进程的可执行文件会破坏路径锁的归属与代码签名完整性。临时签名构建的代码哈希变化后可能需要重新授权，固定 Bundle ID 不能保证保留授权。安装版保留分发时的签名。
+
 每条 Agent 连接独立持有应用句柄、AX 快照、资源限制和取消状态。持有 app 句柄不代表独占应用。FIFO 队列串行执行包含剪贴板事务的完整桌面操作，响应写入独立进行。Agent 销毁只释放自己的连接。[对象接口决策](2026-09-17-experimental-cua-object-api.zh.md)继续负责执行器独立性及坐标语义，[授权决策](2026-09-26-cua-application-consent.zh.md)继续负责应用许可。
 
 取消或超时先停止单次请求并等待确认。截图超时后，唯一的系统 RPC 槽位保留到真实回调结束；新截图返回 `CAPTURE_BUSY`，不继续堆积请求。迟到图片被丢弃，其他 AX 与输入操作仍可执行。结束 await 或创建包装对象不能证明系统连接已恢复。操作或清理无法停止时，才可能使进程失效，届时所有旧句柄均不可用。结果不确定的输入不会自动重放。
diff --git a/.agents/notes/implemented/architecture/2026-10-21-context-menu-contributions.i18n.yaml b/.agents/notes/implemented/architecture/2026-10-21-context-menu-contributions.i18n.yaml
new file mode 100644
index 0000000000..458cbcc733
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-10-21-context-menu-contributions.i18n.yaml
@@ -0,0 +1,19 @@
+# Bilingual-pair consistency record for 2026-10-21-context-menu-contributions.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-10-21-context-menu-contributions.md
+/agent-note-context-menu-contributions:
+  en: 380bed76b1989558
+  zh: ecbb5c15933431f6
+/agent-note-context-menu-contributions/problem:
+  en: baf7f6e331fd9f03
+  zh: 8a45faaad34e6b0c
+/agent-note-context-menu-contributions/decision:
+  en: f04341778de57140
+  zh: 12147060ea28feb1
+/agent-note-context-menu-contributions/alternatives-considered:
+  en: 1fc419cf3a0642d3
+  zh: f774e64679bed2ab
+/agent-note-context-menu-contributions/consequences:
+  en: 7a55e405714d598f
+  zh: d7ff74ace672bf22
diff --git a/.agents/notes/implemented/architecture/2026-10-21-context-menu-contributions.md b/.agents/notes/implemented/architecture/2026-10-21-context-menu-contributions.md
new file mode 100644
index 0000000000..da02632cf2
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-10-21-context-menu-contributions.md
@@ -0,0 +1,29 @@
+# Agent Note: Context menu contributions
+
+Status: implemented
+
+English | [中文](2026-10-21-context-menu-contributions.zh.md)
+
+## Problem
+
+Session and tab menus already accept React Slot entries. Reusing only those entries would require external plugins to supply React components and would leave action discovery, target capture, and cancellation coupled to each trigger.
+
+## Decision
+
+[Context menus](../../../../packages/client/ui-context-menu/README.md) own typed target families, contribution resolution, and callback lifetime. Feature plugins register actions through the same service available to external Client plugins. Plain presentation fields let a renderer consume resolved actions without loading contributed React components. Existing Session and tab Slots remain in feature-owned adapters, preserving those extension positions.
+
+[File actions](../../../../packages/client/ui-file-actions/README.md) own original-content transfer separately from menus and image components. Saving retains original encoding; clipboard interoperability may require PNG conversion. A browser download supplies no local path, so reveal requires a verified Host file or the destination returned by a native save.
+
+The menu plugin contributes `useContextMenu` through the existing Slot root binding. Its ordinary `getTriggerProps` factory centralizes DOM gestures while business owners still provide captured targets. Plain children receive props or existing delegates; a separate React Context or utility package would duplicate the established lifetime and injection mechanism.
+
+## Alternatives considered
+
+**React Slots alone.** They preserve arbitrary visual content but cannot supply a presentation-independent action model. They remain available for existing component contributions.
+
+**A central switch over built-in target kinds.** It would make each new plugin-owned target require changes to the menu implementation. Declaration merging and registered providers instead keep target-specific behavior with its owner.
+
+**Native menus first.** It would duplicate the existing keyboard, placement, and dismissal implementation while excluding component-only legacy entries. The shared Web renderer serves Desktop too; another renderer can consume the plain action view independently.
+
+## Consequences
+
+An opening captures its target and contribution set. Dismissal cancels metadata work; unloading withdraws that provider's actions. Selected actions own execution and must recheck mutable resources. Legacy React entries are absent from plain-data resolution, so native rendering cannot assume complete parity. These lifetimes are covered by registry tests; browser scenarios cover unchanged selection, original bytes, and nested-overlay dismissal.
diff --git a/.agents/notes/implemented/architecture/2026-10-21-context-menu-contributions.zh.md b/.agents/notes/implemented/architecture/2026-10-21-context-menu-contributions.zh.md
new file mode 100644
index 0000000000..cb0b3c5f3c
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-10-21-context-menu-contributions.zh.md
@@ -0,0 +1,29 @@
+# Agent Note: 右键菜单贡献
+
+Status: implemented
+
+[English](2026-10-21-context-menu-contributions.md) | 中文
+
+## 问题
+
+Session 和标签页菜单已经支持 React Slot 条目。仅复用这些条目会要求外部插件提供 React 组件，并使动作发现、目标捕获和取消逻辑继续耦合到各个触发位置。
+
+## 决策
+
+[右键菜单](../../../../packages/client/ui-context-menu/README.zh.md)负责类型化目标类别、贡献解析和回调生命周期。功能插件通过与外部 Client 插件相同的服务注册动作。纯数据展示字段让渲染器无需加载贡献方的 React 组件即可消费已解析动作。现有 Session 和标签页 Slot 保留在各功能所属的适配器中，从而保留这些扩展位置。
+
+[文件动作](../../../../packages/client/ui-file-actions/README.zh.md)独立于菜单和图片组件负责原始内容传输。保存保留原始编码；剪贴板互操作可能需要转换为 PNG。浏览器下载不提供本机路径，因此在文件夹显示要求已验证的 Host 文件，或原生保存返回的目标路径。
+
+菜单插件通过现有 Slot root 绑定贡献 `useContextMenu`。普通函数 `getTriggerProps` 统一处理 DOM 手势，业务所有者继续提供捕获的目标。普通子组件通过 props 或现有 delegate 接收能力；独立 React Context 或工具包会重复已有生命周期与注入机制。
+
+## 考虑过的替代方案
+
+**仅使用 React Slot。** 它们支持任意视觉内容，但无法提供独立于展示方式的动作模型。现有组件贡献仍可使用它们。
+
+**在中心位置按内置目标类型分支。** 这种方式会使每个新增的插件目标都要求修改菜单实现。声明合并与注册式提供方让目标特有行为保留在其所属插件。
+
+**优先实现原生菜单。** 这会重复已有的键盘、定位和关闭实现，同时无法容纳仅提供组件的旧条目。Desktop 同样使用共享 Web 渲染器；其他渲染器可以独立消费纯数据动作视图。
+
+## 影响
+
+打开菜单时捕获目标和贡献集合。关闭取消元数据任务；插件卸载撤回该提供方的动作。已选动作自行负责执行，并须重新检查可变资源。旧 React 条目不参与纯数据解析，因此原生渲染不能假定功能完全一致。注册表测试覆盖这些生命周期；浏览器场景覆盖选择不变、原始字节以及嵌套浮层关闭。
diff --git a/.agents/notes/implemented/bug-fix/2026-10-28-forge-git-session-permissions.i18n.yaml b/.agents/notes/implemented/bug-fix/2026-10-28-forge-git-session-permissions.i18n.yaml
new file mode 100644
index 0000000000..99a0eb8afa
--- /dev/null
+++ b/.agents/notes/implemented/bug-fix/2026-10-28-forge-git-session-permissions.i18n.yaml
@@ -0,0 +1,19 @@
+# Bilingual-pair consistency record for 2026-10-28-forge-git-session-permissions.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-10-28-forge-git-session-permissions.md
+/agent-note-session-permissions-for-forge-git-queries:
+  en: a06c42342d1f0bad
+  zh: 88b063883336cb0b
+/agent-note-session-permissions-for-forge-git-queries/problem:
+  en: ee1e5ba8190a9419
+  zh: 88d6c35a3a400eb0
+/agent-note-session-permissions-for-forge-git-queries/decision:
+  en: 77d7706b2577e552
+  zh: a4538a19656d5945
+/agent-note-session-permissions-for-forge-git-queries/alternatives-considered:
+  en: 69f0bbbc412a546f
+  zh: 9527e87b5adfc7c3
+/agent-note-session-permissions-for-forge-git-queries/consequences:
+  en: acf5249a959ac14c
+  zh: 268fc51ec3278dcb
diff --git a/.agents/notes/implemented/bug-fix/2026-10-28-forge-git-session-permissions.md b/.agents/notes/implemented/bug-fix/2026-10-28-forge-git-session-permissions.md
new file mode 100644
index 0000000000..fd753156d0
--- /dev/null
+++ b/.agents/notes/implemented/bug-fix/2026-10-28-forge-git-session-permissions.md
@@ -0,0 +1,31 @@
+# Agent Note: Session permissions for Forge Git queries
+
+Status: implemented
+
+English | [中文](2026-10-28-forge-git-session-permissions.zh.md)
+
+## Problem
+
+The [Forge panel](../feature/2026-10-09-forge-panel.md) forces read-only confinement even when a Session grants full access. On hosts without a usable sandbox, its checkout and local changes remain unavailable while the Session's shell works. Background queries also reach repository-configured executable helpers through working-tree comparisons.
+
+## Decision
+
+Git inspection uses the Session's resolved sandbox mode and subprocess provider. Full access requires no sandbox backend; confined modes retain their enforcement and never retry unconfined. The Session remains the authority for filesystem permissions, including workspace-write access. Query commands do not request repository mutations.
+
+Local patches and statistics apply command-local Git configuration to disable clean/process filters without changing user configuration. Environment entries preserve subsection names containing equals signs. Existing hook, fsmonitor, external-diff, textconv, optional-lock, and lazy-fetch restrictions remain; submodule queries show commit changes without scanning internal dirty files. Configuration read failure stops the comparison; the changes view reports the filter configuration failure separately from oversized diffs and offers a retry. These restrictions follow the informational-diff approach in Codex while retaining DSH's execution-world and cancellation ownership.
+
+## Alternatives considered
+
+**Force read-only for every query.** This makes an explicitly unconfined Session depend on an unavailable backend. Using the Session mode keeps tool and panel permission behavior consistent.
+
+**Retry without confinement after failure.** This would silently grant authority that a restricted Session does not have.
+
+**Run configured content converters.** They can execute programs and write files during automatic refresh. Disabling them trades converted-content equivalence for predictable query behavior.
+
+## Consequences
+
+Operating-system write protection follows the Session mode rather than a separate panel policy. With clean/process filters disabled, comparisons still apply Git's built-in newline, ident, and encoding conversions: materialized LFS and other filtered files can appear changed even when ordinary Git considers them clean. Pointer-only checkouts compare normally. Uncommitted submodule contents are omitted. The original Forge note remains active for panel ownership and worktree lifecycle; this note supersedes only its unconditional read-only policy.
+
+Filter overrides require Git 2.31 or newer; older Git can ignore them and execute configured helpers under Session permissions. Enumeration and diff run in separate processes, so a concurrently added driver can escape the overrides. These restrictions limit incidental helper execution; the Session sandbox determines the permissions of every process that runs.
+
+Real-repository tests cover permission modes, unavailable confinement, unchanged index/configuration, configured helper markers, submodule commits, filtered bytes, and failed filter enumeration. The Web replay covers permission changes through the picker and the resulting checkout and local-change view.
diff --git a/.agents/notes/implemented/bug-fix/2026-10-28-forge-git-session-permissions.zh.md b/.agents/notes/implemented/bug-fix/2026-10-28-forge-git-session-permissions.zh.md
new file mode 100644
index 0000000000..49ad8f7be5
--- /dev/null
+++ b/.agents/notes/implemented/bug-fix/2026-10-28-forge-git-session-permissions.zh.md
@@ -0,0 +1,31 @@
+# Agent Note: Forge Git 查询的 Session 权限
+
+Status: implemented
+
+[English](2026-10-28-forge-git-session-permissions.md) | 中文
+
+## 问题
+
+[Forge 面板](../feature/2026-10-09-forge-panel.zh.md)即使在 Session 授予完全权限时也强制使用只读沙箱。在没有可用沙箱的主机上，Session 的 shell 可以工作，检出信息与本地变更却持续不可用。后台查询还会通过工作区比较执行仓库配置的辅助程序。
+
+## 决策
+
+Git 检查使用 Session 解析出的沙箱模式与子进程提供方。完全权限无需沙箱后端；受限模式保留强制约束，绝不以无沙箱方式重试。Session 统一决定文件系统权限，包括工作区写入权限。查询命令不请求修改仓库。
+
+本地补丁与统计应用命令级 Git 配置以禁用 clean/process filter，不修改用户配置。环境项保留包含等号的子节名称。现有钩子、fsmonitor、外部 diff、textconv、可选锁与延迟获取限制继续生效；子模块查询展示提交变化，不扫描内部脏文件。配置读取失败时停止比较；变更视图区分过滤器配置失败与 diff 过大，并提供重试。这些限制参考 Codex 的信息展示型 diff，同时保留 DSH 对执行环境与取消过程的管理。
+
+## 考虑过的替代方案
+
+**所有查询强制只读。** 这让已明确取消限制的 Session 依赖不可用的后端。使用 Session 模式使工具与面板的权限行为一致。
+
+**失败后无沙箱重试。** 这会静默授予受限 Session 原本没有的权限。
+
+**运行已配置的内容转换器。** 它们可能在自动刷新时执行程序并写入文件。禁用它们以放弃转换后内容等价性为代价，换取可预测的查询行为。
+
+## 后果
+
+操作系统的写入保护跟随 Session 模式，而非独立的面板策略。禁用 clean/process filter 后，比较仍应用 Git 内置的换行、ident 与编码转换：已物化的 LFS 文件及其他过滤文件可能显示为变更，即使普通 Git 认为它们未变。仅保留指针的检出可正常比较。子模块内部未提交内容不显示。原 Forge 记录仍保留面板所有权与工作树生命周期的决策；本记录仅替代其无条件只读策略。
+
+过滤器覆盖需要 Git 2.31 或更新版本；旧 Git 可能忽略覆盖，按 Session 权限执行已配置的辅助程序。枚举与 diff 在独立进程中执行，因此并发新增的驱动可能绕过覆盖。这些限制减少附带的辅助程序执行；所有实际运行进程的权限由 Session 沙箱决定。
+
+真实仓库测试覆盖权限模式、沙箱不可用、索引与配置不变、辅助程序标记、子模块提交、过滤文件字节和过滤器枚举失败。Web 回放覆盖通过选择器切换权限及相应的检出信息与本地变更视图。
diff --git a/.agents/notes/implemented/bug-fix/2026-10-28-plugin-install-failure-diagnostics.i18n.yaml b/.agents/notes/implemented/bug-fix/2026-10-28-plugin-install-failure-diagnostics.i18n.yaml
new file mode 100644
index 0000000000..aaf821df79
--- /dev/null
+++ b/.agents/notes/implemented/bug-fix/2026-10-28-plugin-install-failure-diagnostics.i18n.yaml
@@ -0,0 +1,25 @@
+# Bilingual-pair consistency record for 2026-10-28-plugin-install-failure-diagnostics.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/bug-fix/2026-10-28-plugin-install-failure-diagnostics.md
+/agent-note-install-failures-keep-their-diagnostics-in-the-dialog:
+  en: dc13db49685fee98
+  zh: 65896465ceaba16a
+/agent-note-install-failures-keep-their-diagnostics-in-the-dialog/problem:
+  en: 34c85dbc0fdaeeaf
+  zh: b11042edb1eb8e3b
+/agent-note-install-failures-keep-their-diagnostics-in-the-dialog/decision:
+  en: fa3f10f9d7502077
+  zh: c6b83153a0f5e324
+/agent-note-install-failures-keep-their-diagnostics-in-the-dialog/alternatives-considered:
+  en: 2616d060183a7a74
+  zh: 15179fd42ea2b6dc
+/agent-note-install-failures-keep-their-diagnostics-in-the-dialog/consequences:
+  en: 246d2a60f856c631
+  zh: d7a552af3ad32b6f
+/agent-note-install-failures-keep-their-diagnostics-in-the-dialog/related:
+  en: e0709383c16148e9
+  zh: 00765408d0ad25f1
+/agent-note-install-failures-keep-their-diagnostics-in-the-dialog/testing:
+  en: 336df2ffde183519
+  zh: 86e62a8a052c1f91
diff --git a/.agents/notes/implemented/bug-fix/2026-10-28-plugin-install-failure-diagnostics.md b/.agents/notes/implemented/bug-fix/2026-10-28-plugin-install-failure-diagnostics.md
new file mode 100644
index 0000000000..89712bf9f7
--- /dev/null
+++ b/.agents/notes/implemented/bug-fix/2026-10-28-plugin-install-failure-diagnostics.md
@@ -0,0 +1,47 @@
+# Agent Note: Install failures keep their diagnostics in the dialog
+
+Status: implemented
+
+English | [中文](2026-10-28-plugin-install-failure-diagnostics.zh.md)
+
+## Problem
+
+A failed plugin installation could show the generic sentence "Something went wrong during the install; the details say what" while its expanded details showed only "No output". The dialog rendered the live install-log stream and the failure kind, and the two Host diagnostics that explain such a failure never entered that stream. A pnpm run that printed nothing had its diagnostic (`result.shortMessage`, or `pnpm failed` as the fallback) written to the complete log and the returned result but never streamed, so the dialog's terminal stayed empty. The GitHub connection check that stops an installation before pnpm runs kept its captured output only in `packageResult.output`. The Client also ignored the settled result's `packageResult.logPath` and `stage`, so a failure with recorded diagnostics offered no path to the complete log and could not say that a finished installation failed while the bundle was being activated.
+
+## Decision
+
+**The install-log stream carries the Host diagnostic of every run the dialog shows.** A pnpm run that fails without printing anything streams the diagnostic the Host records for it, so the complete log and the dialog show the same text. The GitHub connection check reports the `git … ls-remote` command line it ran, with the user information of an http(s) repository URL removed; when its network failure or timeout stops the installation, `installBundle` emits that command, the captured output, and the failure's exit status as the installation's only install-log run under the caller's request id. A check failure the installation survives streams nothing. A timed-out check's Git returned no exit status, so that run settles without one; the returned result records the coerced status 1, because `PackageResult.exitCode` is a number, and `PackageResult.timedOut` states that the status is the one the failure is read as. The command line itself stays module-local: `installBundle` strips it off the plain `PackageResult` it returns, so no second wire field appears.
+
+**The failed screen keeps what the settled result reports, not only the live stream.** `InstallState` holds the settled `packageResult.logPath` — the run that settled the dialog, on the Host's filesystem — and the details name it as the complete log. `InstallState['failure'].stage` and `ChangeResult.enabled` add the sentence that the installation finished and enabling the bundle failed, only when that change did ask to enable it; an install that left activation to **Enable now** never claims it failed enabling. Details on a settled screen without a streamed run say the dialog received no terminal output, never that the run printed none, and a running install makes no such claim. The generic sentence names the failed install command, except when the failed step is applying an enabled bundle, where the enabling sentence stands alone. The answer and the log travel over separate transports, so a run whose first chunk arrives after the answer is kept in the settled dialog as a settled run rather than dropped or shown as running.
+
+No wire type, public export, or config key is added: `ChangeResult.packageResult.logPath`, `ChangeResult.stage`, `ChangeResult.enabled`, and `packageResult.timedOut` already carry these facts to every consumer. The check's command line is a module-local `GithubConnectionFailure` in `github-connection.ts`.
+
+## Alternatives considered
+
+**Have the Client synthesize a terminal run from `packageResult.output`.** Rejected: the install-log stream would stay incomplete for every other reader, including the agent tool and the complete Host log, and the dialog would carry two notions of a run — one streamed, one rebuilt from the result.
+
+**Render `packageResult.output` as a separate Host-diagnostic block.** Rejected: it duplicates the terminal surface with a second styling and copy path, and the failing check's command line would still be missing.
+
+**Add a failure-stage field to `ChangeResult`.** Rejected: `stage` already names installation and activation, and only activation needed its own sentence; a second stage vocabulary would make every consumer learn two fields for one fact.
+
+**Keep the generic sentence and rely on the details.** Rejected: the empty details panel this fixes was exactly what the sentence pointed at, so the sentence must not promise diagnostics the dialog does not show.
+
+**Report the check's coerced exit code in the streamed run too.** Rejected: the stream describes what the process did, and a Git the deadline killed returned no status; the result keeps the coerced status only because its exit code is a number, which the JSDoc states.
+
+## Consequences
+
+- A failed installation always offers something to act on: a pnpm diagnostic for a silent failure, the failing Git command and its output for a GitHub connection failure, the complete log of the settled run, and a sentence naming the failed step when an enabled installation could not be applied.
+- The generic sentence becomes "The install command failed; the details say why" in every dictionary; the details' no-run note says the dialog received no terminal output.
+- A GitHub connection failure reports `timedOut` and returns the coerced exit status 1, while its streamed run settles without an exit code; the displayed command line omits URL user information, and no `argv` field joins the Remote answer.
+- The details' log path covers the run that settled the dialog and is a Host path, so earlier registry attempts and a remote browser may not reach it.
+- No new configuration, wire field, or public package export.
+
+## Related
+
+[Guided plugin installation](../architecture/2026-09-15-guided-plugin-installation.md) owns the install dialog's screens, the pre-install spec check, and the failure classification; this note extends its failed screen and install-log stream.
+
+## Testing
+
+- `packages/boot/plugin-manager/tests/operations.spec.ts` pins the no-output diagnostic stream; `github-connection.spec.ts` pins the recorded command line without URL user information and the timeout state, including the coerced status in the result; `manager.spec.ts` pins the single streamed check run under the request id, its absent exit code on timeout, that the returned `packageResult` carries no command line, and that a check failure pnpm may resolve streams nothing.
+- `packages/client/ui-plugin-manager/tests/manager-store.client.spec.ts` pins the settled log path, stage and enablement fact, the run kept when its first chunk arrives after the answer, and the reset on retry; `components.client.spec.tsx` pins the enabling sentence (only for an install that asked to enable), the complete-log line, and the settled no-output sentence.
+- `apps/web/tests/plugin-install-github.e2e.ts` expands the details of a real GitHub connection failure and finds the Git command, its output, and the log path; `apps/web/tests/plugin-install-silent-failure.e2e.ts` fails a real installation through a package manager that prints nothing and finds the run's command line, its diagnostic, and the complete log in the details.
diff --git a/.agents/notes/implemented/bug-fix/2026-10-28-plugin-install-failure-diagnostics.zh.md b/.agents/notes/implemented/bug-fix/2026-10-28-plugin-install-failure-diagnostics.zh.md
new file mode 100644
index 0000000000..5c8220ed13
--- /dev/null
+++ b/.agents/notes/implemented/bug-fix/2026-10-28-plugin-install-failure-diagnostics.zh.md
@@ -0,0 +1,47 @@
+# Agent Note: Install failures keep their diagnostics in the dialog
+
+Status: implemented
+
+[English](2026-10-28-plugin-install-failure-diagnostics.md) | 中文
+
+## Problem
+
+一次插件安装失败时，界面可能显示通用的“安装过程中出错，原因见安装详情”，而展开后的详情只有“无输出”。对话框渲染的是实时的 install-log 流和失败 kind，而解释这类失败的 Host 诊断从未进入该流。打印了空输出的 pnpm 运行，其诊断（`result.shortMessage`，缺省为 `pnpm failed`）只写进完整日志和返回结果，从未被流式发送，因此对话框的终端一直是空的。在 pnpm 运行前就中止安装的 GitHub 连接检查，其捕获的输出只留在 `packageResult.output` 里。客户端同时也忽略了已结束结果中的 `packageResult.logPath` 和 `stage`，所以即使诊断已被记录，失败界面也没有指向完整日志的入口，也无法说明安装其实已经完成、失败发生在启用 bundle 时。
+
+## Decision
+
+**install-log 流携带对话框所展示的每一次运行的 Host 诊断。** 没有打印任何内容就失败的 pnpm 运行，会把 Host 为其记录的那条诊断流式发送出来，于是完整日志和对话框显示同样的文本。GitHub 连接检查会报告它实际执行的 `git … ls-remote` 命令行，并去掉 http(s) 仓库 URL 中的用户信息；当它的网络失败或超时中止安装时，`installBundle` 把该命令、捕获的输出和这次失败的退出状态作为该次安装唯一的 install-log 运行、以调用方的 request id 发出。安装仍能继续进行的检查失败不发送任何内容。超时的检查里 Git 没有返回退出状态，所以该运行不带退出码结束；返回结果记录强制填入的状态 1，因为 `PackageResult.exitCode` 是数字，而 `PackageResult.timedOut` 说明该状态只是失败被读取成的状态。命令行本身仍只在模块内：`installBundle` 在返回的普通 `PackageResult` 上剥掉它，因此不会多出 wire 字段。
+
+**失败界面保留已结束结果所报告的内容，而不只是实时流。** `InstallState` 持有已结束的 `packageResult.logPath`——结束对话框的那次运行，位于 Host 文件系统——详情把它标为完整日志。`InstallState['failure'].stage` 与 `ChangeResult.enabled` 补充一句话：安装已完成，启用 bundle 时失败；只有当这次变更确实要求启用时才出现，把启用留给**立即启用**的安装不会声称启用失败。已结束界面里没有任何流式运行的详情会说明对话框没有收到终端输出，而不会断言运行本身没有输出；安装进行中也不会这样说。通用提示句点明失败的是安装命令，但失败步骤是应用已启用的 bundle 时，只使用启用阶段的那句话。安装应答与日志走不同传输，因此首个 chunk 晚于应答到达的运行会作为已结束的运行保留在已结束的对话框里，既不会被丢弃，也不会显示成运行中。
+
+不新增 wire 类型、公开导出或配置键：`ChangeResult.packageResult.logPath`、`ChangeResult.stage`、`ChangeResult.enabled` 和 `packageResult.timedOut` 本来就把这些事实带给每个消费方。检查的命令行是 `github-connection.ts` 内模块级的 `GithubConnectionFailure`。
+
+## Alternatives considered
+
+**让客户端从 `packageResult.output` 合成一次终端运行。** 否决：对其他读取方（agent 工具和完整的 Host 日志）来说 install-log 流仍然不完整，而且对话框会出现两种“运行”的概念——一种来自流，一种从结果重建。
+
+**把 `packageResult.output` 渲染成单独的 Host 诊断块。** 否决：它会以第二套样式和文案路径重复终端界面，而且失败检查的命令行仍然缺失。
+
+**给 `ChangeResult` 新增失败阶段字段。** 否决：`stage` 已经区分安装和启用，而且只有启用需要自己的提示句；第二套阶段词汇会让每个消费方为一个事实学两个字段。
+
+**保留通用提示句、只依赖详情。** 否决：这次要修的正是被该提示句指向的空详情面板，因此提示句不能承诺对话框并不显示的诊断。
+
+**在流式运行里也报告检查被强制的退出码。** 否决：流描述的是进程实际做了什么，而被期限终止的 Git 没有返回任何状态；结果保留强制状态只是因为它的退出码字段是数字，JSDoc 已写明这一点。
+
+## Consequences
+
+- 安装失败后总有可行动的信息：静默失败时的 pnpm 诊断、GitHub 连接失败时出错的 Git 命令及其输出、结束对话框那次运行的完整日志，以及已启用的安装在应用阶段失败时点名失败步骤的一句话。
+- 通用提示句在所有词典中变为“安装命令失败，原因见安装详情”；详情里的无运行提示改为说明对话框没有收到终端输出。
+- GitHub 连接失败会报告 `timedOut` 并返回强制状态 1，而它的流式运行不带退出码结束；展示的命令行去掉 URL 用户信息，Remote 应答里也不会多出 `argv` 字段。
+- 详情里的日志路径只覆盖结束对话框的那次运行，且是 Host 路径，因此更早的换源尝试与远端浏览器可能都够不到它。
+- 不新增配置、wire 字段或公开包导出。
+
+## Related
+
+[Guided plugin installation](../architecture/2026-09-15-guided-plugin-installation.zh.md) 拥有安装对话框的各个界面、安装前的 spec 检查和失败分类；本记录扩展了它的失败界面和 install-log 流。
+
+## Testing
+
+- `packages/boot/plugin-manager/tests/operations.spec.ts` 钉住无输出诊断的流式发送；`github-connection.spec.ts` 钉住去掉 URL 用户信息的记录命令行与超时状态（含结果里的强制状态）；`manager.spec.ts` 钉住以 request id 发送的唯一检查运行、超时下缺失的退出码、返回的 `packageResult` 不含命令行，以及 pnpm 可能自行解决的检查失败不发送任何运行。
+- `packages/client/ui-plugin-manager/tests/manager-store.client.spec.ts` 钉住已结束的日志路径、stage 与启用事实、首个 chunk 晚于应答到达时保留的运行，以及重试时的重置；`components.client.spec.tsx` 钉住启用阶段的提示句（只对要求启用的安装）、完整日志行，以及已结束界面的无输出提示句。
+- `apps/web/tests/plugin-install-github.e2e.ts` 展开一次真实 GitHub 连接失败的详情，找到 Git 命令、它的输出和日志路径；`apps/web/tests/plugin-install-silent-failure.e2e.ts` 让一次真实安装通过不打印任何内容的包管理器失败，并在详情中找到该运行的命令行、诊断和完整日志。
diff --git a/.agents/notes/implemented/feature/2026-08-28-auto-review.i18n.yaml b/.agents/notes/implemented/feature/2026-08-28-auto-review.i18n.yaml
index f50ce14bc9..96e5042c3e 100644
--- a/.agents/notes/implemented/feature/2026-08-28-auto-review.i18n.yaml
+++ b/.agents/notes/implemented/feature/2026-08-28-auto-review.i18n.yaml
@@ -15,8 +15,8 @@
   en: db0a2deb9193a00d
   zh: dab5a65b88957464
 /agent-note-experimental-auto-review-before-each-tool-call/decision/one-complete-reviewer-request:
-  en: 7bd9fef90e8639b9
-  zh: e2a096885c9c1e83
+  en: 45ac7b4e759b29ad
+  zh: 5374cc89e587f076
 /agent-note-experimental-auto-review-before-each-tool-call/decision/result-and-cancellation:
   en: 647fe68c52b907e0
   zh: 267a739bad44ad65
diff --git a/.agents/notes/implemented/feature/2026-08-28-auto-review.md b/.agents/notes/implemented/feature/2026-08-28-auto-review.md
index 9434c92f41..547dd3a2cf 100644
--- a/.agents/notes/implemented/feature/2026-08-28-auto-review.md
+++ b/.agents/notes/implemented/feature/2026-08-28-auto-review.md
@@ -41,6 +41,8 @@ The integration uses only the latest `request/header.config` provider/model and
 
 Each item is its own message and keeps the same text in later reviews: the pending call becomes a historical call, and the integration remembers, for each live Session, the schema each reviewed call showed so that it reappears at the same position. A review's messages therefore begin with all messages of the previous review. Providers that cache only at message ends, such as OpenAI implicit breakpoints on GPT-5.6 and later, or at a final marker with lookback, such as Anthropic `cache_control`, reuse the previous review; one growing user message let them reuse only the policy. The schema memory is process-local, so the first review after a restart omits earlier schemas and misses the cache once.
 
+The request also carries the reviewed Session's `sessionId` and `purpose: 'auto-review'`. Routes that require a per-conversation identity or key prompt caching on one, such as the `x-opencode-session` header OpenCode requires and OpenAI `prompt_cache_key`, derive it from that id; without it OpenCode rejects every review, and Auto fails every call. The [DeepSeek Session-log upload](../../../../packages/session/session-log-deepseek/README.md#request-field) applies the same eligibility and registered exclusions to reviews as to other requests. The uploaded data is the canonical Session log; review prompts and decisions remain outside that log.
+
 The reviewer builds the history and the pending call from the Session's complete action history: an authorization is the earlier call the `REVIEW_POLICY` source rules make eligible, and a duplicate or conflicting identity has to be visible anywhere in the log rather than inside a recent window, so neither the Session projections nor a bounded read serves the decision. The read is the deprecated synchronous `snapshotEvents()` under a line-scoped `typescript/no-deprecated` waiver.
 
 The main agent's V3 `system/message` nodes, assistant text/reasoning, and tool results are excluded. The current call must belong to the open step recorded by `step/start`; missing step ownership fails closed. It appears only as the final message; an unstarted sibling has no historical call fact. Native schema comes from the latest request header. PTC captures a frozen schema at binding construction and passes it through the scheduler into `ToolExecution`; descriptions and parameter schemas never enter start/settle events or the Session/SDK wire. Missing, inconsistent, or ambiguous action facts reject the call without consulting the live registry. An oversized request fails closed without summarization, truncation, another compaction pass, or a small output-token budget.
diff --git a/.agents/notes/implemented/feature/2026-08-28-auto-review.zh.md b/.agents/notes/implemented/feature/2026-08-28-auto-review.zh.md
index 5ba7a8b39c..bc833d3fc3 100644
--- a/.agents/notes/implemented/feature/2026-08-28-auto-review.zh.md
+++ b/.agents/notes/implemented/feature/2026-08-28-auto-review.zh.md
@@ -41,6 +41,8 @@ Integration 只使用最新 `request/header.config` 的 provider／model 与 shi
 
 每个条目各占一条消息，并在后续评审中保持相同文本：待审调用会变成历史调用，integration 为每个存活 Session 记住每次已审调用展示的 schema，使其在同一位置再次出现。因此一次评审的消息以上一次评审的全部消息开头。只在消息结尾缓存的 provider（如 GPT-5.6 及以后的 OpenAI 隐式断点），或在末尾标记处向前回溯的 provider（如 Anthropic `cache_control`），都能复用上一次评审；单条不断增长的 user 消息只能让它们复用策略。Schema 记忆只在进程内，因此重启后的第一次评审会缺少先前的 schema，并有一次缓存未命中。
 
+请求还携带被评审 Session 的 `sessionId` 与 `purpose: 'auto-review'`。需要按对话标识路由或以其为 prompt 缓存键的路由（例如 OpenCode 要求的 `x-opencode-session` header 与 OpenAI 的 `prompt_cache_key`）由该 id 派生；缺少它时 OpenCode 会拒绝每次评审，Auto 会让每个调用失败。[DeepSeek session-log 上传](../../../../packages/session/session-log-deepseek/README.zh.md#request-field)对评审和其他请求应用相同的上传资格与注册排除条件。上传的是权威 Session 日志；评审提示词和决策仍不进入该日志。
+
 reviewer 从 Session 的完整动作历史构建历史与待审调用：授权是符合 `REVIEW_POLICY` 来源规则的那个更早调用，而重复或冲突的身份必须在整份日志的任何位置都可见，而不是只在近期窗口内可见，因此 Session 投影与有界读取都无法支撑该判定。这次读取使用已废弃的同步 `snapshotEvents()`，并带有行级 `typescript/no-deprecated` 豁免。
 
 主 agent 的 V3 `system/message` 节点、assistant 正文／reasoning 与 tool results 全部排除。当前调用必须属于 `step/start` 记录的开放 step；缺少 step 归属时拒绝执行。该调用只作为最后一条消息出现；尚未开始的 sibling 没有历史调用事实。原生 schema 来自最新 request header。PTC 在 binding 构造时捕获冻结 schema，经由调度器传入 `ToolExecution`；描述与参数 schema 不进入开始／结算事件或 Session／SDK wire。动作事实缺失、不一致或有歧义时拒绝调用，不查询 live registry。超窗请求直接拒绝，不做摘要、截断、额外 compaction 或设置小型输出 token 预算。
diff --git a/.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.i18n.yaml b/.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.i18n.yaml
new file mode 100644
index 0000000000..fc9f88a600
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.i18n.yaml
@@ -0,0 +1,55 @@
+# Bilingual-pair consistency record for 2026-09-13-liveshare-protocol-and-owner-surfaces.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.md
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague:
+  en: e73b246e19c9b412
+  zh: c87594ad5eccbfb5
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/problem:
+  en: 17bc15d382139909
+  zh: 3eff34b5ddea951e
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision:
+  en: a15c7c13f167e5ac
+  zh: a15c7c13f167e5ac
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/what-a-share-is:
+  en: ff1dbb0f7c2355e4
+  zh: 3de92b2e6c5e9e15
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/what-a-reader-can-do:
+  en: 5652ed7f515a2a5d
+  zh: 993378f78f5a4120
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/two-driving-tiers:
+  en: 0b9303333bf482ae
+  zh: 6dfc68ad9e2924c3
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/default-visibility:
+  en: 754705367c350b31
+  zh: e10b6541458c4a45
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/how-shared-work-stays-inside-its-grant:
+  en: fa3ab42895a16ce1
+  zh: 429be63cfb8e55a6
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/keeping-one-branch-across-retries:
+  en: 6b0369dafe34a5aa
+  zh: aea9465216204122
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/who-the-owner-is:
+  en: 7e6d1305782d2822
+  zh: 66fb2cbef0f49d47
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/what-the-reader-sees-at-the-top:
+  en: 44d02a91cf0c5715
+  zh: dabbf6c59ff08e4a
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/when-the-connection-breaks:
+  en: 36ee6e090797806b
+  zh: 21809a0cf990d905
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/how-the-served-page-is-exercised:
+  en: d9cbb8277862587c
+  zh: 867fa6c4db95d09c
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/decision/what-the-package-exposes:
+  en: d13a0df787f212d4
+  zh: 24794e8bf4d92492
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/alternatives-considered:
+  en: 2daeba6e763383e4
+  zh: fe0fe3f7f4d546e7
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/verification:
+  en: 76cc786336c5daf5
+  zh: 98bd2b9cc7d1791c
+/agent-note-liveshare-sharing-a-dsh-session-with-a-colleague/consequences:
+  en: 8a6e06a9fba917e2
+  zh: 68a9d19b15119345
diff --git a/.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.md b/.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.md
new file mode 100644
index 0000000000..a4d1c6af81
--- /dev/null
+++ b/.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.md
@@ -0,0 +1,156 @@
+# Agent Note: Liveshare — sharing a DSH session with a colleague
+
+Status: implemented
+
+English | [中文](2026-09-13-liveshare-protocol-and-owner-surfaces.zh.md)
+
+## Problem
+
+A DSH session runs on your own computer. A colleague sometimes needs to watch one while you work — to follow a debugging session, or to see how a long task is going. Today there is no way to do that. Sending the session log is not the same thing: the colleague would need your plugins, configuration, and sandbox to render it, and the session only makes sense while it is running on your machine.
+
+So a share needs three things at once. A **page the colleague opens in a browser** that shows the session running on your machine, without connecting them to it. A **limit on what that page can do**, starting with "read without writing" — anything the page offers beyond what you agreed is a security hole, not a convenience. And an **answer to "who shared this?"**, because a page that cannot say who its owner is cannot be trusted by whoever opens it.
+
+This note covers the half that runs inside the owner's DSH — the share dialog, the owner-side service behind it, the package's browser face, and the page a reader opens — plus the protocol package both sides speak. The Liveshare server, the shared service in the middle, is its own package (`@deepseek-ai/dsh-experimental-liveshare-relay`) and is reviewed and deployed separately.
+
+## Decision
+
+### What a share is
+
+An owner creates a share for one session from DSH itself. The share is published to the Liveshare server, a service both sides can reach, and DSH returns a link. Opening that link shows the session rendered by the owner's own DSH with its own plugins, so the reader never needs the owner's configuration. The reader's list contains the source Session and any children that reader created through the share. Workspace names, membership, and ordering are trimmed to those Sessions; unrelated Sessions and workspaces stay hidden.
+
+A share created from the DSH Share dialog is an **organization link** share: it carries `accessMode: 'open'`, so anyone in the organization who has the link is admitted. The deployment's `LIVESHARE_ALLOWED_SUBJECTS` is unioned into every share's ACL: it narrows an `open` share to the subjects it lists, and on a stored `selected` record it adds those subjects beside the record's own selection.
+
+**Specific colleagues (`selected`) and the older `approval` spelling are legacy stored records.** The Host still reads them with their recorded ACL and shows their access summary, and the Liveshare server still admits their viewers by that ACL, but the shipped Share dialog offers no way to create one. `liveshareShares.create` keeps its `accessMode` and `allowedSubjectIds` fields for those records and for callers that invoke the Remote directly; the shipped dialog sends neither.
+
+### What a reader can do
+
+The reader's page is the normal DSH client, not a cut-down copy. The sidebar, the session list, expanding, collapsing, and selecting are all there, because browsing is part of reading. What is missing is every action the reader is not allowed to perform: creating an unrelated session, renaming, archiving, deleting, and managing a workspace. Branching follows the share's own fork switch, prompting is available in both tiers and runs inside that tier's sandbox, and attachment upload follows the Sessions the reader can see; management permissions remain independent of the tier and the fork switch.
+
+These actions are not hidden with CSS. One access snapshot decides what the page may do: the remote-access client follows the reader's own `remoteAccess/follow`, and each button and menu entry reads its endpoint's answer on the global resource, a Session, or a Workspace through `useRemoteAccess`, `useAccess` or `useSessionAccess`, or `useWorkspaceAccess`, rendering again whenever the answer changes. The owner's DSH computes the snapshot from this share's `share-viewer` policy, so an ability the owner withdraws closes without reloading the page — and the server refuses those actions anyway; the page only avoids offering what would be refused. The served index carries the reader's opening snapshot, so no entry appears before the page knows it is allowed, and after the snapshot stream fails every answer is refused. The owner's own page opens with the owner baseline and behaves exactly like an ordinary DSH. Per-Session refusal reasons are not part of the snapshot: the page states the page-level reason (share mode, stop, expiry, lost access) and generic read-only copy. A page that cannot read the Session at all — offline owner, stopped or expired share, lapsed sign-in — states that condition at the top and gives the reader an action, instead of leaving an empty shell or a bare code.
+
+### Two driving tiers
+
+Every share carries a `ViewerSessionMode` with two values, and both drive the shared Session:
+
+- **view** — the reader drives the shared Session's loop through the normal prompt path, inside a read-only sandbox in the granted workspace, so the Session's tools never write a file. The read and search surface (`read`, `read_image`, `glob`, `grep`, `present`), the tools with no local file effect (`todo_write`, `skill`, `web_search`, `web_fetch`). Every declared path is checked before the tool runs, and a tool whose call cannot be checked is refused.
+- **write** — the reader drives the same loop in a bounded writable sandbox that also modifies files inside the granted workspace, under the Host's write ceiling.
+
+The sandbox is installed on the Session, but it confines only the turns a share viewer starts: `agent/pre-step` records whether an admitted turn's entering input names a share viewer, and the guard and the replacements read that answer for each execution. A turn the owner starts keeps the Session's tools; an owner's steering input inside a viewer's turn stays confined with it. The marker lives in Host memory, is recomputed for each turn, and never enters the Session log. Stopping every share, or letting them all expire, disposes the layer and gives the Session its own tools back.
+
+The earlier vocabulary had three tiers — `view` watched, `fork-readonly` branched, and `write` could write. `view` and `fork-readonly` differed only in whether the reader could branch and drive a child, which the share's own `allowsFork` switch already decides; a third mode duplicated that switch and let the two answers disagree, so the two driving tiers replaced it.
+
+Forking is not a tier. The share carries its own `allowsFork` switch, independent of the tier: a `view` share may allow it and a `write` share may refuse it. A fork creates a child the viewer owns with its own read-only or writable ceiling and leaves the source untouched.
+
+Attachment upload is not a tier or a switch. `fileUploads/upload` rides the read role, so every Session a share serves the reader accepts files; visibility alone decides it, and the owner has no separate attachment switch.
+
+A mode this version does not recognize, and a persisted record whose mode the host cannot establish, are not driven: the share stays readable, and the page reports what it could not establish. The withdrawn `fork-readonly` name is not read back as `view`; a persisted owner record that names it is rejected when the owner state loads.
+
+The sandbox is a property of the Session, but it applies per turn: the Host records, in memory, whether the admitted input of the running turn names a share viewer, and confines that turn while leaving an owner-started turn on the Session's native tools. The earlier shipped design confined every turn, including the owner's; it needed no turn read, but a share changed how the owner's own work ran. Persisting a turn's requester was rejected: a committed-message projection had to be folded, re-read for every execution, and kept in step with the share that admitted it, and it still had to fail closed on mixed or unestablished requesters. The in-memory marker keeps the guard and the replacements reading one answer per execution without adding a Session event; a restart recomputes it from the next admitted step, and a rejected or never-admitted step leaves no marker.
+
+### Default visibility
+
+The package ships as a runtime dependency of every dsh installation, but a default installation must show it nowhere in the plugin manager: neither under **Built-in plugin settings**, nor under **Experimental plugins**, nor on the **More** page. A person enables it deliberately — by inserting the bundle's rows in the active profile's `cordis.patch.yml`, or by selecting the bundle in `dsh.profile.bundles`; the [package README](../../../../packages/experimental/liveshare/README.md) owns both routes. The package must still ship with the release and stay installable, and users who enabled it before this rule keep seeing it.
+
+The Host's bundle `enabled` flag states whether the profile selected the bundle, which is not the same as whether the bundle's plugins run: inserting the bundle's rows through `cordis.patch.yml` starts its plugins while leaving the bundle unselected, so a visibility rule built on `enabled` would hide a bundle the person had just enabled and would strand the documented enable path.
+
+The package declares the hiding intent in its own bundle manifest as `dsh.bundle.listedByDefault: false`; the manager keeps one generic visibility rule rather than a client-side name set. A bundle whose manifest does not declare `listedByDefault: false` is listed; one that declares it is listed only when the profile enables it, the installation carries it selected, or one of the rows its bundle patch declares is running (`pkg.rows.some(row => row.enabled)`). The filter applies before both lists are derived, so the name is absent from the main Experimental plugins group, the More page, Built-in plugin settings, and the Installed plugins group until one of those holds. The Host's `listBundles` contract, the profile format, and the installed package set are unchanged. `BundleInfo.rows` already joins each declared row with the Loader entry currently carrying it, and the client's `PackageView` carries whether that entry runs, so row state is the effective answer for both enable routes: removing the rows, disabling them, or deselecting the bundle stops them and the card leaves both lists again.
+
+A default-hidden bundle is not addressable by ID while its card is hidden: `openPkg` resolves only the listed inventory, so `pluginNavigation.openBundle('@deepseek-ai/dsh-experimental-liveshare')` renders no details until the same enablement conditions list it.
+
+### How shared work stays inside its grant
+
+The Owner, not the viewer page or the Liveshare server, authorizes each Session operation. A child receives its real scoped tool restrictions before it can accept a prompt, including after a cold resume: the host installs the limit from the base `agent/created` event. That listener runs after the agent entered the registry, but creation has not resolved, AgentLoop holds the agent's queued input, and a throw fails creation, so a refused limit still prevents any prompt. A missing host service or failed installation refuses the child; a configuration flag, a tool name, or a promise to install later is not enforcement.
+
+A shared source Session can still serve its owner's own work. Every reader call is dispatched through the owner's own Connection and Gateway as that share-and-reader pair's own Peer, whose `share-viewer` principal (the share id and the server-asserted identity triple) is fixed by in-process owner code when the Peer is created; no wire field can change it. The Gateway decides the Peer's calls, and the Session notifications it forwards to the Peer, through remote access: this package registers the `share-viewer` policy, which binds a served reader to read roles on the shared Session, its own forks, and the Workspaces holding them, and to fork and write roles whose conditions apply the share mode; it binds nothing else, so every other endpoint and notification is refused, and it binds nothing once the share stops serving the reader. The owner invalidates the reader's access on every grant, revocation, mode change, and expiry, and disposes the reader's Peer when the grant ends or the share stops or expires. A reader's prompt enters the Session as a `user-rpc` message whose `source.principal` names that reader; owner messages carry no principal. While any share over that Session is active, the owner host mounts its own confined replacements for the read and search surface and the no-effect tools — plus bounded `edit` and `write` when some share may write — in the Session's own scope, and a viewer-started turn may run nothing else. An owner-started turn keeps the Session's native tools, so a share never narrows the owner's own work. The pre-step records which kind of turn is running, in memory only. Each operation re-reads the shares' current Relay grants and checks the resolved target against the granted root; the pre-step re-checks every entering message's viewer against the Relay's admission before a model step, so reader input queued before a revocation never drives the model. A reader's stop of the shared Session is dispatched through the Gateway like a prompt: the policy admits it while the share's tier is established and the Session is confined, and the owner's own Session controller stops whatever turn that Session is running, the owner's included. The general Peer, principal, and remote-access design is in [Peer principals and remote access](../../implemented/architecture/2026-10-12-peer-principal-and-remote-access.md).
+
+A confined file tool resolves every path its own arguments declare, checks that the granted root contains each result, and hands the deployment's tool that canonical path; a pathless search uses the Session's working directory, which the replacement checks like a named path. A bounded edit or write performs the same containment check and then edits or writes through the filesystem backend with the Session's current sandbox policy and the normal observation policy.
+
+### Keeping one branch across retries
+
+One fork request binds its viewer, share, source, operation identity, and completed prefix. The Owner reserves that operation durably before creating a child, and records the child the owner's fork answer returned; a retry of a recorded operation replays that answer instead of forking again. A different prefix under the same identity is refused. The owner's `SessionForkRequest` mints the child id, so the Host sends no child identity: a host that dies after the child was created but before the operation was recorded cannot name that child on retry and creates a new one. Closing that window needs a Session Controller request that accepts a caller-supplied child identity. The inherited prefix stops before unrelated queued input; only immediately following request metadata is retained. Revoked children keep their logs but cannot resume with broader access, and removing a share does not expose the source Session's unrestricted tools.
+
+### Who the owner is
+
+A share can only be created by a verified owner. The dialog shows the identity the owner's DSH read back — name, expiry, when it will renew — and uses a label derived from the identity when there is no display name. The code that creates the share refuses an unverified owner as well, so the question is not settled by whether a button was clickable.
+
+Signing in happens once, in a window the page opens while the owner clicks. The DSH creates a short-lived transaction tied to the Liveshare server address, to the Liveshare server instance, and to the page allowed to finish it; the page opens the sign-in page the DSH names, accepts one one-time code only from that exact origin, window, and transaction, and hands it back to its own DSH.
+
+The Owner redeems the code with the verifier it retained, stores the credential with owner-only permissions, and sends it only to the Liveshare server address that issued it. New registration requires that verified credential; existing-share reconnect uses the share's management token, and explicit identity claim preserves the share's ACL, mode, expiry, and token. A share's named colleagues are the owner's stored selection plus the deployment's own allowlist; nothing is derived from a display identity.
+
+### What the reader sees at the top
+
+The served page reuses the sidebar's existing brand row instead of adding a bar on top of the app: the usual Harness mark, plus a LiveShare entry that names who shared the session and which DSH version they run, with the Liveshare server's own release labeled separately. Clicking it returns to the page listing the shares you can open.
+
+### When the connection breaks
+
+A reader's feed can fail: a stream disappears, the Liveshare server cancels a request, a read times out. The page retries only the failures that are defined as repeatable, and stops for good on authentication, permission, and missing-share errors, showing the reason instead of reconnecting forever.
+
+### How the served page is exercised
+
+The page a viewer opens is the owner's own Web page. The Liveshare server asks the owner for its rendered index document, places a short carrier script at its top, and passes the page's shell assets and plugin bundles through from the owner, so the page runs every owner plugin at the owner's version. The carrier only turns the page's calls and streams into reads over the Liveshare server's channel; the Liveshare plugin itself recognizes a viewer page and mounts the viewer surfaces instead of the Share action. The owner renders that index with the reader's own access snapshot in place of the owner baseline, and the page then follows the reader's `remoteAccess/follow` snapshot; no other read carries a reader's grants.
+
+The viewer page is tested in-process: the test assembles the page from the carrier, the shell, and the client plugins including Liveshare's, stands in for the Liveshare server's read channel, and answers the page's reads from a scripted owner, so the assertions see the real shell, carrier, and presentation plugins.
+
+### What the package exposes
+
+The package ships one Host program and one browser face. Its public entries are the Host export (`lib/index.js`), `./client` (`lib/client.js`, a closure-factory bundle), `./viewer-declarations`, the share-management Remote's `./typert` and `./remote` faces, `./types`, the bundle patch `./cordis.patch.yml`, and the locale JSON files. The manifest declares the browser face as `dsh.client` with `platform: web` and the client services it needs; that face reads `__DSH_LIVESHARE_VIEWER__`, mounts the viewer session plugin and its brand, model, permission, session-row, and share-path surfaces on a served viewer page, and otherwise mounts the owner's generated Remote before the Session-header Share action.
+
+Share management is one `liveshareShares` Typert Remote with twelve methods — `create`, `list`, `stop`, `updatePermissions`, `setCapabilities`, `capabilities`, `relay`, `setRelay`, `identity`, `audit`, `testRelay`, and `testPublish` — over the operations the owner host runs. The only same-origin HTTP routes left are the four owner sign-in and credential routes: `/api/liveshare.ownerLoginStart`, `/api/liveshare.ownerLoginRedeem`, `/api/liveshare.ownerLoginCancel`, and `/api/liveshare.ownerCredential`.
+
+The outgoing gateway is a supervised child process whose source entry is `src/owner-gateway/cli.ts` and whose published entry is `lib/owner-gateway/cli.js`; the directory name keeps it distinct from the DSH API gateway.
+
+## Alternatives considered
+
+- **Build a separate read-only page instead of serving the normal client.** Rejected: reading needs browsing, grouping, and selecting, so a second page would have to rebuild all of it and would quietly lose the navigation the product keeps.
+- **Decide each button's availability where the button is.** Rejected: every entry reads one access snapshot the owner computes, so a screen added later cannot quietly reintroduce an action the reader may not perform.
+- **Let the reader's page decide its own access.** Rejected: only the owner and the service decide what a share grants; the page states what it was told.
+- **Treat an older share with no mode as writable.** Rejected: that would hand a reader access the owner never configured, so a share without a mode is read-only.
+- **Put the sign-in code in the page address, or read the credential from the popup's cookies.** Rejected: addresses leak through history, referrers, and logs, and a page should not hold credentials.
+- **Show the service's own error text when the page cannot explain a refusal.** Rejected: that text may contain a file path, a credential, or another reader's session, so the page shows the stable reason it can vouch for.
+- **Put execution restrictions only in editable configuration or a sandbox mode.** Rejected: a child can change configuration, and per-call execution choices can outrank a mode. The real operation needs a monotonic guard and a verified implementation.
+- **Check a model-supplied path only before dispatch, or globally constrain every filesystem read.** Rejected: a pre-dispatch check is separated from the tool call by other listeners, while a global read rule would also constrain unrelated Owner work. The containment check runs inside the authorized Session's own read and write.
+- **Reuse the deployment's default root or copy the entire source tail into a child.** Rejected: both can include files or pending input the viewer was never granted.
+- **Use a deployment-wide secret or self-reported display fields as owner identity.** Rejected: neither identifies the logged-in person who approved this publication.
+- **Keep three tiers.** Rejected: `view` and `fork-readonly` differ only in whether the reader can branch and drive a child, which is already the independent fork switch. A third mode duplicates that switch and lets the two answers disagree.
+- **Keep a per-share attachment-upload switch.** Rejected: an attachment is part of a prompt on a Session the reader can already see. The separate switch duplicated visibility and could only subtract from it, while the upload role already rides the read role.
+- **Attribute every turn to a requester and exempt the owner's own turns.** Rejected after it shipped, then narrowed: persisting a turn's requester needed a Host-only projection over message sources, a turn-boundary read per execution, and a re-check of the share that admitted each turn, and it still had to fail closed on mixed or unestablished requesters. The shipped design keeps only an in-memory marker for the running turn — `agent/pre-step` reads the entering principals and the guard reads that answer — so an owner-started turn keeps the Session's native tools without adding a Session event. The accepted cost is that an owner's steering input inside a viewer's turn stays confined; a viewer message that reaches a later step narrows that turn.
+- **Let each tool name its own tier or sandbox.** Rejected: the tier belongs to the share. A per-call choice would let one execution outrank the grant that admitted it.
+- **Test the bundle's `enabled` flag directly.** Rejected: it would keep the code smallest, but the patch route starts the bundle's plugins while leaving the bundle unselected, so the card would stay hidden exactly when its plugins started, contradicting the product rule.
+- **Derive effective enablement in the Host.** Rejected: `listBundles` could report a new or redefined effective state, but that would change a cross-package contract for one client-only presentation rule and invite every bundle consumer to reinterpret `enabled`, which must keep meaning "selected in the profile".
+- **Ship LiveShare outside the installation's optional bundles.** Rejected: that would make it visible nowhere by construction, but the package must still ship as an npm package with the release and be installable, and it would also remove the bundle from the Host's list entirely, taking the details entry with it.
+- **Keep the colleague picker, or replace it with a directory-backed selector.** Deferred: naming a colleague needs an identity directory the Liveshare server does not provide, so the dialog cannot offer a choice it can verify. Stored `selected` and `approval` records keep working through their ACL, and the creation entry point stays retired until a directory contract exists; `liveshareShares.create` keeps its fields for those records and direct Remote callers, so this defers the API rather than deleting it.
+
+## Verification
+
+- A reader's page keeps the normal navigation, and no action the reader may not perform appears on the shared session or on any branch.
+- A DSH without the Liveshare bundle, and the owner's own page, behave exactly as before.
+- A share uses one of two tiers and that tier's sandbox; unknown modes, unreadable answers, and shares without a mode stay readable but are never driven.
+- A share cannot be created without a verified owner identity.
+- A share created from the dialog carries `open`; a stored `selected` or `approval` record keeps its recorded ACL and access summary, and `create` still stores a requested `selected` mode with its subjects.
+- Sign-in accepts one one-time code from the transaction's origin, window, and state, and nothing else; a failed or abandoned attempt discards the transaction, and no credential, cookie, or code reaches a URL, storage, or a log.
+- Real Controller, ToolRuntime, filesystem, and profile tests cover fork identity, cold enforcement, bounded execution, revocation, and normal cancellation. The built viewer must use its real POST carrier and Owner authorization handler; deterministic display fixtures do not replace execution or persistence tests.
+- Generated API documentation and both SDK projections remain aligned with the `user-rpc` source principal, which only the `agent/pre-step` admission check consumes.
+- `ViewerSessionMode` has two members, and a persisted `fork-readonly` record is rejected when the owner state loads.
+- A `view` share drives the source Session, refuses file writes and out-of-grant reads, and can fork when `allowsFork` is set.
+- `fileUploads/upload` is allowed on every Session the reader can see, for every tier and fork combination.
+- Source tool decisions read only the Session's mounted layer: the guard permits this installation's confined replacements for the read and search surface and the no-effect tools, plus bounded `edit` and `write` on a writable Session, and refuses every other name, with no turn, requester, or origin consulted.
+- Unit and real-runtime tests cover the tier policy, confined reads and writes, fork ceilings, the layer's installation and release, and the pre-step admission check over the durable message source.
+- The plugin-manager component tests hold the bundle out of both lists while its declared rows are off, list it once a declared row runs, and still open it by bundle ID while it is hidden; the recorded goldens and the refresh card count move with that rule.
+
+## Consequences
+
+The reader's page can only be as accurate as what the service tells it. Capability answers, the owner's identity status, the session mode, the owner's DSH version, and the sign-in endpoints all come from the owner's DSH and the Liveshare server; until those are deployed together with this layer, the page stays at its most conservative setting — read-only, with a sign-in that cannot complete — rather than guessing.
+
+The page is not a security boundary. The owner's DSH and the Liveshare server refuse a reader's writes no matter what the page does; the access snapshot exists so the page does not offer actions that would only be refused.
+
+Existing ACLs are retained. A record without a mode is readable but not driven, and contradictory mode fields are refused. Unattributed shares are shown as unverified history.
+
+Owner reconnect state is atomically replaced and queued within one process, but multiple processes sharing one file can still lose updates or compete for a gateway. Cross-process execution ownership is unresolved; atomic replacement alone is not a transaction or a route claim. Containment is checked by path: a local process that replaces a directory inside the grant with a symlink between the check and the open can redirect a viewer's read, or a write elsewhere within the sandbox's writable roots. Operations anchored to a directory handle would close this window and are left to a separate change. Final viewer-artifact and SDK snapshot evidence remains required before release.
+
+A `view` share is not watch-only: it runs the reader's prompts and tool calls inside the read-only sandbox. A deployment that wants a passive reader has no separate mode and must rely on the reader not sending prompts rather than on a tier name. Fork reach is the only independently switchable action; attachment upload cannot be disabled separately.
+
+The sandbox reaches the owner's own turns too. While any share over a Session is active the owner can only read inside the granted workspace, and can write only when some share allows writing; a share that is merely published — even one nobody is using — therefore changes the owner's own tool surface until it is stopped or expires. Cancellation has no attribution either: a reader's stop ends whatever turn the shared Session is running.
+
+The default cards list, the More page, and their recorded goldens lose one card, and the manager's refresh card count drops by one. A person who only knows the plugin page cannot discover LiveShare or switch it on from that page; the package README owns the two enable routes instead. A bundle enabled through the patch route shows its card with the switch off while its rows run, because the switch reflects the profile's bundle selection and writes that selection; the documentation states the two routes and this difference. The rule covers one explicitly named bundle rather than a manifest flag, so adding another hidden-until-running bundle, or retiring this one, is a one-line set edit with a test and docs update.
+
+Shipped creation produces organization-link shares only: the Share dialog sends neither `accessMode` nor `allowedSubjectIds`, so every new share is `open`, and the deployment's `LIVESHARE_ALLOWED_SUBJECTS` is the only subject-level narrowing a new share can carry. Stored `selected` and `approval` records keep working and keep their access summaries, and the create fields stay on the Remote for those records and direct callers while no UI exposes them.
diff --git a/.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.zh.md b/.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.zh.md
new file mode 100644
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+# Agent Note: Liveshare —— 把 DSH 会话分享给同事看
+
+Status: implemented
+
+[English](2026-09-13-liveshare-protocol-and-owner-surfaces.md) | 中文
+
+## Problem
+
+DSH 会话跑在你自己的电脑上。同事有时需要在你工作的同时看某个会话——跟着一起排查问题，或者看看一个长任务进展到哪了。现在没有这个能力。把会话日志发过去并不等价：对方要有你的插件、配置和沙箱才能渲染出来，而且会话只有在你机器上运行时才有意义。
+
+所以一次分享要同时解决三件事：一个**同事用浏览器打开就能看的页面**，看到你机器上正在跑的会话，但不需要连到你的机器；一个**对页面能做什么的限制**，从"能读、不能写文件"开始——页面多给一个你没同意的操作就是安全漏洞，不是便利；以及一个**"这是谁分享的"的答案**，因为说不清归属的页面，打开它的人无从信任。
+
+这条 Note 覆盖 owner 自己 DSH 里运行的那一半——分享对话框、背后的 owner 端服务、本包的浏览器端，以及读者打开的页面——以及双方共用的协议包。中间的 Liveshare 服务端是独立的包（`@deepseek-ai/dsh-experimental-liveshare-relay`），单独审查与部署。
+
+## Decision
+
+### 一次分享是什么
+
+owner 在 DSH 里为某一个会话创建分享。分享发布到 Liveshare 服务端（双方都能访问的服务）后，DSH 返回一个链接。打开链接看到的是 owner 自己的 DSH 用自己插件渲染出的会话，读者不需要 owner 的配置。读者列表包含源会话，以及该读者通过分享创建的子会话。工作区名称、成员和顺序裁剪为这些会话；无关会话和工作区保持不可见。
+
+从 DSH 分享弹窗新建的分享是**组织内持链接**分享：它携带 `accessMode: 'open'`，组织内拿到链接的人都能看。部署级 `LIVESHARE_ALLOWED_SUBJECTS` 会并入每份分享的 ACL：对 `open` 分享，它把准入收窄到列出的主体；对已存储的 `selected` 记录，它把列出的主体加在记录自己的选择旁边。
+
+**指定同事（`selected`）与更早的 `approval` 拼写是旧版持久记录。** Host 仍按记录里的 ACL 读取它们并展示访问摘要，Liveshare 服务端仍按该 ACL 接纳它们的查看者，但随版本发布的分享弹窗不提供新建入口。`liveshareShares.create` 的 `accessMode` 与 `allowedSubjectIds` 字段保留给这些记录以及直接调用该 Remote 的调用方；随版本发布的弹窗两个都不发送。
+
+### 读者能做什么
+
+读者页面就是正常的 DSH 客户端，不是精简版：侧栏、会话列表、展开折叠、选择都在，因为浏览本来就是"看"的一部分。缺的只是读者无权执行的动作——创建无关会话、重命名、归档、删除、管理工作区。分支遵循分享自己的 fork 开关；发送消息在两档里都可用，并在该档的沙箱内运行；附件上传跟随读者可见的会话。管理权限与档位和 fork 开关都保持独立。
+
+这些动作不是用 CSS 藏起来的。页面能做什么由一份访问快照决定：remote-access 客户端跟随读者自己的 `remoteAccess/follow`，每个按钮和菜单项经 `useRemoteAccess`、`useAccess` 或 `useSessionAccess`、`useWorkspaceAccess` 读取其端点在全局资源、某个会话或某个工作区上的答案，答案变化时重新渲染。owner 的 DSH 依据该分享的 `share-viewer` 策略计算快照，因此 owner 收回某项能力时，对应入口不用重新加载页面就会关闭——而且服务端本来就会拒绝这些操作，页面只是不去提供注定被拒绝的按钮。读者收到的 index 已带上读者的首份快照，因此页面在确认允许之前不会显示任何入口；快照流失败后，所有答案都为拒绝。owner 自己的页面以 owner 基线打开，行为与普通 DSH 完全一致。快照不包含逐会话的拒绝原因：页面陈述页面级原因（分享模式、停止、过期、失去访问权）和通用的只读文案。拿不到分享正文时，页面顶部直接陈述该状态，并且每一档都给出读者自己能做的动作（重试、重新登录、回到分享列表，或明确指引联系分享者），不会停在空白外壳或错误码上。
+
+### 两档驱动
+
+每个分享带一个 `ViewerSessionMode`，只有两个值，且两档都会驱动共享会话：
+
+- **view** —— 读者通过普通 prompt 路径驱动共享会话的 loop，在授予工作区的只读沙箱里运行，因此会话的工具绝不写文件。读取与检索面（`read`、`read_image`、`glob`、`grep`、`present`）、无本地文件副作用的工具（`todo_write`、`skill`、`web_search`、`web_fetch`）都限制在授权范围内：工具运行前检查其声明的每个路径，无法检查的调用一律拒绝。
+- **write** —— 读者在受宿主写入上限约束的可写沙箱里驱动同一个 loop，沙箱也会修改授予工作区内的文件。
+
+沙箱安装在会话上，但只约束分享查看者发起的轮次：`agent/pre-step` 记录一个已准入轮次的进入输入是否带有 share-viewer principal，守卫与替代定义对该轮次的每次执行读取这一结论。所有者自己发起的轮次保留会话自己的工具；所有者在查看者轮次中追加的输入仍留在该受限轮次内。该标记只存在于 Host 内存，按轮次重算，不写入会话日志。所有分享停止或全部过期后执行层被释放，会话恢复自己的工具。
+
+较早的词汇有三档——`view` 只观看、`fork-readonly` 分支、`write` 可写。`view` 与 `fork-readonly` 只差在读者能否分支并驱动子会话，而这已经由分享自己的 `allowsFork` 开关决定；第三档重复了该开关，还会让两处答案互相矛盾，因此由两档驱动取代。
+
+fork 不是一档。分享自带独立的 `allowsFork` 开关，与档位无关：`view` 分享可以允许 fork，`write` 分享也可以拒绝。fork 创建的子会话归读者所有，带有自己的只读或可写上限，源会话保持不变。
+
+附件上传既不是一档，也不是一个开关。`fileUploads/upload` 随读角色授予，因此分享向读者提供的每条会话都接受文件；只由可见性决定，所有者没有单独的附件开关。
+
+本版本不认识的模式、以及宿主无法确定模式的持久记录，都不会被驱动：分享仍可读取，页面会说明它无法确定什么。已退场的 `fork-readonly` 名称不会读回为 `view`；持久化的 owner 记录若写有该值，owner 状态加载时会直接拒绝。
+
+沙箱是会话的属性，但按轮次生效：Host 在内存中记录运行中轮次的已准入输入是否带有 share-viewer principal，只约束该轮次，把所有者发起的轮次留在会话原生工具上。此前上线的实现限制每个轮次（包括所有者的），虽不需要读取轮次，却让分享改变了所有者自己的工作方式。持久化轮次请求者被否决：那需要从已提交消息来源折叠的投影、每次执行读取 turn boundary、并与接纳该轮次的分享保持同步，而且在混合或无法确立请求者时仍必须默认拒绝。内存标记让守卫与替代定义对每次执行读取同一个结论，且不新增会话事件；重启后从下一个准入步骤重新计算，被拒绝或从未准入的步骤不留下标记。
+
+### 默认可见性
+
+本包作为运行时依赖随每个 dsh 安装一同交付，但默认安装必须在插件管理器里完全不显示它：**内置插件配置**下不显示，**实验性插件**下不显示，**更多**页也不显示。用户主动启用它——在当前 profile 的 `cordis.patch.yml` 中插入组合包的行，或在 `dsh.profile.bundles` 中选中该组合包；两条启用路径由[包 README](../../../../packages/experimental/liveshare/README.zh.md)负责。该包仍必须随版本发布、保持可安装，且在此规则之前已启用的用户继续能看到它。
+
+Host 的组合包 `enabled` 标志表示 profile 是否选中了这个组合包，这与它的插件是否在运行并不等价：通过 `cordis.patch.yml` 插入组合包的行会让插件运行，而组合包本身仍未选中；因此以 `enabled` 为准的可见性规则会把用户刚刚启用的组合包隐藏起来，使写入文档的启用路径失效。
+
+因此管理器维护一个 `HIDDEN_UNTIL_RUNNING` 组合包名集合——当前只有 `@deepseek-ai/dsh-experimental-liveshare`——集合中的组合包只有在它 patch 声明的行至少有一条在运行时才会被列出（`pkg.rows.some(row => row.enabled)`）。过滤发生在两个列表派生之前，因此在满足条件前，它不会出现在主"实验性插件"组、**更多**页、**内置插件配置**和"已安装插件"组中。该集合是 `PluginManagerPage.tsx` 中的客户端数据；Host 的 `listBundles` 契约、profile 格式和已安装包集合都保持不变。`BundleInfo.rows` 已把每条声明的行与当前承载它的 Loader 条目关联起来，客户端的 `PackageView` 携带该条目是否在运行，因此行状态就是两条启用路径的有效答案：删除这些行、把它们置为 disabled，或取消选中组合包，都会让它们停止运行，卡片随之从两个列表消失。
+
+卡片隐藏期间组合包 ID 仍可按 ID 打开：`openPkg` 会从未过滤的 Host 组合包列表中解析隐藏的组合包，因此 `pluginNavigation.openBundle('@deepseek-ai/dsh-experimental-liveshare')` 仍能渲染其详情。其它按 ID 链接组合包的界面因此继续可用，组合包页也像其它未选中组合包的页面一样列出各行及其关闭状态。
+
+### 分享工作如何限制在授权范围内
+
+Owner 而不是查看页或 Liveshare 服务端授权每次会话操作。子会话必须先安装真实作用域工具限制，才能接受消息，冷恢复后也一样：宿主机从基础 `agent/created` 事件安装该限制。该监听器运行时智能体已登记进注册表，但创建尚未完成，AgentLoop 会扣住其排队输入，且监听器抛错会使创建失败，因此被拒绝的限制仍能阻止任何消息。宿主机服务缺失或安装失败都会拒绝子会话；配置开关、工具名或稍后安装的承诺都不是执行限制。
+
+共享源会话仍可服务所有者自己的工作。每次读者调用都以「该分享与该读者」专属的 Peer 经所有者自己的 Connection 与 Gateway 分派，该 Peer 的 `share-viewer` principal（分享 ID 与服务端断言的身份三元组）由所有者进程内代码在创建 Peer 时确定，任何线路字段都无法改变它。Gateway 经 remote access 判定该 Peer 的调用以及转发给它的会话通知：本包注册 `share-viewer` 策略，把受服务的读者绑定到共享会话、其自己的 fork 及包含它们的工作区上的读取角色，以及条件按分享模式判定的 fork 与写入角色；除此之外不做任何绑定，因此其它端点和通知一律被拒绝，分享不再服务该读者后也不再有任何绑定。所有者在每次授权、撤权、模式变化与过期时使读者的访问失效，并在授权结束、分享停止或过期时释放读者的 Peer。读者的提示词以 `user-rpc` 消息进入会话，其 `source.principal` 指明该读者；所有者的消息不带 principal。只要该会话还有分享活跃，所有者 Host 就在会话自身作用域内挂载读取与检索面与无副作用工具的受限替代，以及（某个分享允许写入时）有界 `edit` 与 `write`，查看者发起的轮次只能运行这些。所有者自己发起的轮次保留会话原生工具，因此分享不会收窄所有者自己的工作。pre-step 只在内存中记录当前轮次属于哪一类。每次操作都会重新读取分享当前的 Relay 授权，并按授予根目录检查解析后的目标；pre-step 在模型步骤前按 Relay 准入重新检查每条进入消息的查看者，因此撤权前排队的读者输入永远不会驱动模型。读者对共享会话的停止与提示词一样经 Gateway 分派：策略在分享档位确立且会话受沙箱限制时放行，随后由所有者自己的会话控制器停止该会话当前运行的轮次，包括所有者发起的轮次。通用的 Peer、principal 与 remote access 设计见 [Peer principal 与 remote access](../../implemented/architecture/2026-10-12-peer-principal-and-remote-access.zh.md)。
+
+受限文件工具解析其自身参数声明的每个路径，检查获授根目录包含解析结果，再把规范路径交给部署的工具；无路径的搜索使用会话工作目录，由替代定义按命名路径一样检查。受限编辑或写入执行同样的包含检查，然后按会话当前沙箱策略和正常观察策略经文件系统后端编辑或写入。
+
+### 重试时保留同一个分支
+
+一次 fork 请求绑定查看者、分享、源会话、操作身份和已完成前缀。Owner 在创建子会话前持久化预留该操作，并记录 owner 的 fork 应答返回的子会话；重试已记录的操作会重放该应答，而不是再次 fork。同一身份指定不同前缀会被拒绝。owner 的 `SessionForkRequest` 自己生成子会话 id，因此 host 不发送子会话身份：若 host 在子会话已创建、但操作尚未记录时退出，重试无法指名该子会话，会再创建一个。要关闭这一窗口，需要 Session Controller 的请求接受调用方提供的子会话身份。继承前缀停在无关排队输入之前；只保留紧随其后的请求元数据。被撤销的子会话保留日志，但不能以更宽权限恢复；移除分享不会暴露源会话不受限制的工具。
+
+### owner 是谁
+
+只有已验证的 owner 才能创建分享。对话框显示 owner 的 DSH 回读到的身份——名字、有效期、何时续期——没有显示名时用身份派生出来的标签。创建分享的代码本身也会拒绝未验证的 owner，不是只看按钮能不能点。
+
+登录只做一次，且发生在 owner 点击时页面预留的窗口里。DSH 生成一个短寿命事务，绑定 Liveshare 服务端地址、Liveshare 服务端实例，以及允许完成它的页面；页面打开 DSH 指定的登录页，只接受来自该 origin、该窗口、该事务的一次性 code，并把它交回自己的 DSH。
+
+Owner 使用自己保留的校验值兑换代码，以仅所有者可读写的权限保存凭据，并只向签发它的 Liveshare 服务端地址发送。首次登记需要已验证凭据；已有分享重连使用分享管理 token，显式身份认领保留该分享的 ACL、模式、过期时间和 token。分享指定的同事是 owner 的存储选择加上部署自身的允许列表；不会从显示身份派生任何内容。
+
+### 读者页面顶部显示什么
+
+被服务的页面复用侧栏原有的品牌行，而不是在应用上再压一条横条：原本的 Harness 标记，加上一个 LiveShare 入口，写明是谁分享的、对方跑的是哪个 DSH 版本（Liveshare 服务端自己的 release 另行标注）。点击它回到"我能看的分享"列表页。
+
+### 连接断开时
+
+读者的数据流可能失败：流消失、Liveshare 服务端取消请求、读取超时。页面只重试定义上可重复的失败；遇到认证、权限与分享不存在的错误就直接停下并显示原因，不会无休止地重连。
+
+### 服务出去的页面怎么测
+
+读者打开的页面就是 owner 自己的 Web 页面。Liveshare 服务端向 owner 要渲染好的 index 文档，在最前面插入一段很短的 carrier 脚本，页面的 shell 资源和插件 bundle 也从 owner 透传过来，所以页面跑的是 owner 版本的全部插件。carrier 只把页面的调用和流转成 Liveshare 服务端通道上的读请求；由 Liveshare 插件自己识别 viewer 页，挂上 viewer 界面，而不是分享按钮。owner 渲染这份 index 时用读者自己的访问快照取代 owner 基线，页面随后跟随读者的 `remoteAccess/follow` 快照；其他读请求都不夹带读者的授权。
+
+读者页面在进程内测试：测试用 carrier、shell 和包括 Liveshare 在内的 client 插件拼出页面，顶替 Liveshare 服务端的读通道，并用脚本化的 owner 回答页面的读请求，因此断言看到的是真实 shell、carrier 与呈现插件。
+
+### 本包对外提供什么
+
+本包交付一个 Host 程序和一个浏览器端。公开入口包括 Host 导出（`lib/index.js`）、`./client`（`lib/client.js`，closure-factory bundle）、`./viewer-declarations`、分享管理 Remote 的 `./typert` 与 `./remote` 两个面、`./types`、组合包 patch `./cordis.patch.yml`，以及 locale JSON 文件。manifest 以 `dsh.client` 声明浏览器端，`platform` 为 `web`，并列出它需要的客户端服务；该入口读取 `__DSH_LIVESHARE_VIEWER__`：在被服务的查看页上挂载查看页 session 插件及其品牌、模型、权限、会话行与分享路径界面，否则先挂载 owner 生成的 Remote，再挂载 Session 头部操作。
+
+分享管理是一个 `liveshareShares` Typert Remote，共十二个方法——`create`、`list`、`stop`、`updatePermissions`、`setCapabilities`、`capabilities`、`relay`、`setRelay`、`identity`、`audit`、`testRelay` 与 `testPublish`——背后是 owner 宿主执行的操作。仅存的同源 HTTP 路由是四条 owner 登录与凭据路由：`/api/liveshare.ownerLoginStart`、`/api/liveshare.ownerLoginRedeem`、`/api/liveshare.ownerLoginCancel` 与 `/api/liveshare.ownerCredential`。
+
+出站网关是受监督的子进程，源码入口为 `src/owner-gateway/cli.ts`，发布入口为 `lib/owner-gateway/cli.js`；目录名让它与 DSH API gateway 明确区分。
+
+## Alternatives considered
+
+- **单独做一个只读页面，不服务正常客户端。** 否决：阅读需要浏览、分组与选择，另做一个页面就得把这些全部重建，还会悄悄丢掉产品要保留的导航。
+- **每个按钮各自判断能不能点。** 否决：每个入口都读取 owner 计算的同一份访问快照，后加的界面才不会悄悄重新引入读者无权执行的动作。
+- **让读者页面自己决定权限。** 否决：分享授予什么，只由 owner 与服务端决定；页面只陈述被告知的结果。
+- **把没有模式字段的旧分享当作可写。** 否决：那会把 owner 从未配置的权限交给读者，因此没有模式的分享一律只读。
+- **把登录 code 放进页面地址，或从弹窗的 cookie 读凭据。** 否决：地址会经浏览历史、referrer 和日志泄漏，页面也不应该持有凭据。
+- **页面解释不了某个拒绝时，直接展示服务端的错误原文。** 否决：那段文本可能包含文件路径、凭据或别的读者的会话，所以页面只显示它能担保的稳定原因。
+- **只在可编辑配置或沙箱模式中写执行限制。** 否决：子会话能够改变配置，而逐调用执行选择可能优先于模式。真实操作必须经过单调拒绝的守卫和已验证实现。
+- **只在分派前检查模型路径，或全局限制所有文件系统读取。** 否决：分派前检查与工具调用之间还隔着其他监听器，而全局读取规则还会限制无关 Owner 工作。包含检查在已授权会话自身的读写中执行。
+- **复用部署默认根目录，或把源会话整个尾部复制到子会话。** 否决：两者都可能包含查看者未获授的文件或待处理输入。
+- **以部署共享密钥或自报显示字段作为所有者身份。** 否决：两者都不能识别批准本次发布的已登录人员。
+- **保留三档。** 否决：`view` 与 `fork-readonly` 只差在读者能否分支并驱动子会话，而这已经是独立的 fork 开关。第三档重复了该开关，还会让两处答案互相矛盾。
+- **保留分享级的附件上传开关。** 否决：附件是读者已经能看到的会话上的一条 prompt 的一部分。单独的开关重复了可见性，且只能从可见性里做减法，而上传角色本来就随读角色授予。
+- **按轮次归属请求者并让所有者轮次豁免。** 上线后否决，之后缩小范围：持久化轮次请求者需要仅 Host 可见的消息来源投影、每次执行读取 turn boundary、重新检查接纳该轮次的分享，而且在混合或无法确立请求者时仍必须默认拒绝。现在的实现只为运行中轮次保留内存标记——`agent/pre-step` 读取进入消息的 principal，守卫读取该结论——因此所有者发起的轮次保留会话原生工具，且不新增会话事件。接受的代价是：所有者在查看者轮次中追加的输入仍留在受限轮次内；查看者消息若进入后续步骤，会立即收窄该轮次。
+- **让每个工具自行声明档位或沙箱。** 否决：档位属于分享。逐调用选择会让某次执行凌驾于批准它的授权之上。
+- **严格的 manifest 选中判断。** 否决：直接判断 `pkg.enabled` 代码最少，但默认安装启用 LiveShare 的唯一文档路径是编辑 `cordis.patch.yml`，那不会让组合包被选中。卡片会在插件恰好开始运行时仍然隐藏，与产品规则矛盾。
+- **在 Host 派生有效启用状态。** 否决：`listBundles` 可以以新字段或改写字段报告有效状态，但这会为一条纯客户端的展示规则改动跨包契约，并诱使每个组合包消费方重新解释 `enabled`——它必须继续表示"profile 已选中"。
+- **把 LiveShare 移出安装随附的可选组合包。** 否决：将它从可选集合移除即可从构造上让它处处不可见，但该包仍需随版本作为 npm 包发布并可安装，而且这会把组合包从 Host 列表中完全移除，详情入口也会随之消失。
+- **保留选人器，或换成由目录支撑的选择器。** 推迟：点名同事需要身份目录，而 Liveshare 服务端目前不提供；弹窗无法给出它能验证的选择。已存储的 `selected` 与 `approval` 记录仍按 ACL 工作，在有目录契约之前新建入口保持退役；`liveshareShares.create` 的字段保留给这些记录与直接调用方，所以这是推迟 API，而不是删除它。
+
+## Verification
+
+- 读者页面保留正常导航，且在共享会话与任何分支上都不会出现读者无权执行的动作。
+- 没有 Liveshare bundle 的 DSH 以及 owner 自己的页面，行为与以前完全一致。
+- 分享使用两档之一及该档的沙箱；未知模式、读不懂的应答、没有模式的分享仍可读取，但绝不会被驱动。
+- 没有已验证的 owner 身份，就无法创建分享。
+- 弹窗创建的分享携带 `open`；已存储的 `selected` 或 `approval` 记录保留记录中的 ACL 与访问摘要，`create` 仍会存储调用方请求的 `selected` 模式及其主体。
+- 登录只接受来自该事务 origin、窗口与 state 的一次性 code，别的都不接受；失败或放弃都会丢弃事务，凭据、cookie 与 code 都不进入 URL、存储或日志。
+- 真实 Controller、ToolRuntime、文件系统和 profile 测试覆盖 fork 身份、冷恢复限制、有界执行、撤权和正常取消。已构建查看页必须使用真实 POST 载体和 Owner 授权处理器；确定性显示 fixture（测试前置数据）不替代执行或持久化测试。
+- 生成的 API 文档和两种 SDK 投影与 `user-rpc` 来源 principal 保持一致；该字段只由 `agent/pre-step` 准入校验消费。
+- `ViewerSessionMode` 只有两个成员；持久化的 `fork-readonly` 记录在 owner 状态加载时被拒绝。
+- `view` 分享驱动源会话，拒绝文件写入与越界读取，并在设置 `allowsFork` 时可以 fork。
+- 对读者可见的每条会话，无论档位与 fork 开关如何组合，`fileUploads/upload` 都被允许。
+- 源会话的工具决策只读取会话上挂载的执行层：守卫放行本次安装的读取与检索面与无副作用工具的受限替代，可写会话下另有有界 `edit` 与 `write`，拒绝其它所有工具名，不读取轮次、请求者或来源。
+- 单元测试与真实运行时测试覆盖档位策略、受限读写、fork 上限、执行层的安装与释放，以及基于持久消息来源的 pre-step 准入校验。
+- 插件管理器的组件测试在声明行全部关闭时把该组合包排除在两个列表之外，在声明行有一条运行后列出它，并在它隐藏时仍能按组合包 ID 打开；录制的 golden 与刷新卡片数随该规则变化。
+
+## Consequences
+
+读者页面只能准确到服务端告诉它的程度。能力回答、owner 身份状态、会话模式、owner 的 DSH 版本、登录端点，都由 owner 的 DSH 与 Liveshare 服务端提供；在与本层一起部署之前，页面保持最保守的状态——只读，且登录无法完成——而不是去猜。
+
+页面不是安全边界。无论页面做什么，owner 的 DSH 与 Liveshare 服务端都会拒绝读者的写入；这份访问快照的作用只是让页面不去提供注定被拒绝的按钮。
+
+已有 ACL 保持不变。无模式记录仍可读取，但不会被驱动；互相矛盾的模式字段被拒绝。没有归属的分享显示为“未验证历史”。
+
+Owner 重连状态以原子替换写入，并在单进程内排队，但多个进程共享一个文件仍可能丢失更新或争用网关。跨进程执行归属尚未解决；原子替换本身不是事务或路由认领。包含关系按路径检查：若本地进程在检查与打开之间把获授范围内的目录换成符号链接，可以让查看者的读取改指别处，或让写入落到沙箱可写根内的其他位置。基于目录句柄锚定的操作可以消除这一窗口，留待单独变更引入。发布前仍需完成查看页产物和 SDK 快照验证。
+
+`view` 分享不是"只看"：它会在只读沙箱里运行读者的 prompt 与工具调用。想要被动观看的部署没有单独模式，只能依赖读者不发送 prompt，而不能依赖档位名称。fork 是唯一可独立关闭的动作；附件上传无法单独关闭。
+
+沙箱同样作用于所有者自己的轮次。只要某会话还有分享活跃，所有者也只能在授予工作区内读取，且只有在某个分享允许写入时才能写入；因此一条仅仅发布、并没有人在用的分享也会改变所有者自己的工具面，直到它停止或过期。取消同样没有归属：读者的一次停止会结束共享会话正在运行的任何轮次。
+
+默认卡片列表、**更多**页及其录制 golden 各少一张卡片，管理器的刷新卡片数也减一。只认识插件页的人无法从该页发现 LiveShare 或直接开启它；启用路径由包 README 负责。通过 patch 路径启用的组合包，其卡片显示为关闭状态而行在运行，因为开关反映并写入 profile 的组合包选中状态；文档会说明两条路径及其差异。该规则覆盖一个显式命名的组合包而不是 manifest 标志，因此新增另一个"运行前隐藏"的组合包或退役这一个，都只是一行集合改动，并配一条测试和文档更新。
+
+随版本发布的创建流程只产生组织链接分享：分享弹窗不发送 `accessMode` 与 `allowedSubjectIds`，因此新分享一律为 `open`，部署级 `LIVESHARE_ALLOWED_SUBJECTS` 是新分享唯一能获得的主体级收窄。已存储的 `selected` 与 `approval` 记录继续工作并保留访问摘要；`liveshareShares.create` 的字段仍留在 Remote 上供这些记录与直接调用方使用，而界面不暴露它们。
diff --git a/.agents/notes/implemented/feature/2026-10-09-forge-panel.i18n.yaml b/.agents/notes/implemented/feature/2026-10-09-forge-panel.i18n.yaml
index 7d202e9987..53d2b74f3a 100644
--- a/.agents/notes/implemented/feature/2026-10-09-forge-panel.i18n.yaml
+++ b/.agents/notes/implemented/feature/2026-10-09-forge-panel.i18n.yaml
@@ -9,14 +9,14 @@
   en: 344bcc7e9825bbc8
   zh: c1d0f4b54f5b3786
 /agent-note-change-request-panel-and-worktree-sessions/decision:
-  en: b18b287b701aef93
-  zh: 462c0f561f1a0c18
+  en: 6a0dc836205863ba
+  zh: 3d4feb0385953dda
 /agent-note-change-request-panel-and-worktree-sessions/deferred:
   en: 32ef8af85f4d2f66
   zh: b82b67f94346399e
 /agent-note-change-request-panel-and-worktree-sessions/alternatives-considered:
-  en: 91b3338f958ad0e9
-  zh: b64f30d333280084
+  en: e471e16b6b6450ca
+  zh: 5fbc9242edc8d112
 /agent-note-change-request-panel-and-worktree-sessions/consequences:
-  en: 97976f073b9f65e0
-  zh: 95be3f7f375b0876
+  en: 81790c448f0a7d3b
+  zh: ec63ccb2ad315ff8
diff --git a/.agents/notes/implemented/feature/2026-10-09-forge-panel.md b/.agents/notes/implemented/feature/2026-10-09-forge-panel.md
index 20b9231fce..1285ba6cdf 100644
--- a/.agents/notes/implemented/feature/2026-10-09-forge-panel.md
+++ b/.agents/notes/implemented/feature/2026-10-09-forge-panel.md
@@ -12,7 +12,7 @@ English | [中文](2026-10-09-forge-panel.zh.md)
 
 [`dsh-experimental-client-ui-forge`](../../../../packages/experimental/client-ui-forge/README.md) is a two-face package. Its Host half, the `forgePanel` Remote, assembles everything the panel shows for one Session into one streamed state; the forge registry and the binding service keep only their domain operations. Its Client half is a right-sidebar tab, a Session header button that shows or hides it, a New Session option, a creation card above the composer, a toast, and the [Session list icons and hover card section](2026-10-20-forge-session-list.md). Every surface calls a bound item a change request, the forge registry's term, whatever its code host calls it. The [forge bundle](../../../../packages/experimental/forge-bundle/README.md) ships the panel, the forge registry, the GitHub provider, the bindings, and an isolated worktree service as one default-disabled Plugins page entry.
 
-The Remote inspects the checkout through the Session's subprocess provider under the Session's read-only sandbox policy, so it reads what the Session's commands see and cannot write. Inspection reads the top-level, Git, and common Git directories, the branch or the abbreviated HEAD commit, the upstream, the remotes, and the size of the branch's changes against its fork point. It runs when a Session is followed, after each `working-directory/change`, `tool/result`, and `sandbox/mode` event, and on refresh, one at a time with one trailing rerun.
+The Remote inspects the checkout through the Session's subprocess provider under its [resolved permissions and query restrictions](../bug-fix/2026-10-28-forge-git-session-permissions.md), so it reads what the Session's commands see. Inspection reads the top-level, Git, and common Git directories, the branch or the abbreviated HEAD commit, the upstream, the remotes, and the size of the branch's changes against its fork point. It runs when a Session is followed, after each `working-directory/change`, `tool/result`, and `sandbox/mode` event, and on refresh, one at a time with one trailing rerun.
 
 Status polling follows panel subscriptions: a Session's bindings are watched only while one of its surfaces is mounted, and the registry stops polling change requests nobody watches. Each card keeps the last snapshot a poll returned, so a transient failure keeps the title and number visible. A Session's only open change request starts expanded, and with several every card starts collapsed; the user's first toggle replaces this default.
 
@@ -24,7 +24,9 @@ The worktree a Session works in can be removed outside it. Each inspection check
 
 The panel does not move a Session between existing worktrees. Removing a change request appends a `dismiss` record, and its toast offers Undo through `track`.
 
-The panel also shows the changes behind a Session's work in a changes view, a resource tab type of this package. The Remote parses every diff on the Host into files and hunks, so the browser draws them without a patch parser, and bounds each read with `maxDiffBytes` and `maxUntrackedFiles`. Local changes come from confined `git diff` in the Session's execution world, in a scope the user picks: the branch against its fork point by default, or the uncommitted, unstaged, or staged changes; untracked files are read through the Session's filesystem and shown as new files. A change request's changes come from its code host at the head of the binding's latest status, through two provider reads the forge seam gained, `diff` and `fileText`. The Host keeps the patch it read last for each change request, keyed by the head commit and base branch and bounded by `maxCachedDiffBytes`, so reopening, refreshing, and navigating at the same head download nothing again; a host or provider that refuses an answer over its size limit reports the forge failure `too-large`, and the view then offers the change request's web page instead of a retry. Unchanged lines between hunks expand from the file's new side, which is the working tree, the index, or the head commit, and only while that text still matches the hunks. Each inspection also sizes the branch's changes for a local changes card, shown while no open change request carries the checked-out branch; its Create change request sends the Session a user message, so the Agent creates the change request with its own tools and the binding follows from `gh pr create` as for any other.
+The panel also shows the changes behind a Session's work in a changes view, a resource tab type of this package. The Remote parses every diff on the Host into files and hunks, so the browser draws them without a patch parser, and bounds each read with `maxDiffBytes` and `maxUntrackedFiles`. Local changes come from `git diff` using the Session's permissions and execution world, in a scope the user picks: the branch against its fork point by default, or the uncommitted, unstaged, or staged changes; untracked files are read through the Session's filesystem and shown as new files. A change request's changes come from its code host at the head of the binding's latest status, through two provider reads the forge seam gained, `diff` and `fileText`. The Host keeps the patch it read last for each change request, keyed by the head commit and base branch and bounded by `maxCachedDiffBytes`, so reopening, refreshing, and navigating at the same head download nothing again; a host or provider that refuses an answer over its size limit reports the forge failure `too-large`, and the view then offers the change request's web page instead of a retry. Unchanged lines between hunks expand from the file's new side, which is the working tree, the index, or the head commit, and only while that text still matches the hunks. Each inspection also sizes the branch's changes for a local changes card, shown while no open change request carries the checked-out branch; its Create change request sends the Session a user message, so the Agent creates the change request with its own tools and the binding follows from `gh pr create` as for any other.
+
+Review comments capture the file, side, range, complete hunk, and reviewed head when the user selects code. Agent references enter the existing composer quote mechanism, so the user controls batching and the sent message records exactly what the model receives. GitHub writes belong to the optional forge provider operation: preflight checks the current head, the write addresses that commit, and an ambiguous outcome blocks another write until the user reconciles it. Review drafts and inline records belong to a browser tab occurrence, not to the Session log or a GitHub pending review. Switching Sessions retains that occurrence; closing it discards the local state and rejects late write completions. Published GitHub comments remain external records.
 
 ## Deferred
 
@@ -79,6 +81,12 @@ The changes view offers no scope for one commit or for the last turn yet; both w
 
 **Creating the change request from the card.** The panel would need to push the branch and compose the title and description; a message lets the Agent do both with its tools and the user's instructions, and keeps one way to bind change requests.
 
+**Sending each line comment immediately to the Agent.** It starts a turn before the user can collect related comments or add a shared instruction; composer references preserve that choice.
+
+**Keeping review drafts after their tab closes.** Reopening the same PR would restore abandoned review state. A tab occurrence gives closing a clear discard meaning while preserving Session switching.
+
+**Automatically retrying a review write.** A lost response does not mean that GitHub rejected the request. Retaining the outgoing request and requiring reconciliation prevents a transport failure from silently duplicating comments.
+
 ## Consequences
 
-The panel shows current status only while it is open; checks that finish while nothing is mounted produce no notification. Changes made outside the Session appear after Refresh or the next tool result. Every inspection spawns up to eleven short Git processes in the Session's execution world with one remote, and two more for each further remote it tries for a fork point. A worktree exists only for a Session that requested it before its first step, and a failed or cancelled attempt can leave its branch or checkout behind. A message that enters while the Agent runs a turn or other maintenance gets no hold, so its worktree is created within the first turn and a removed worktree is not checked. While a message waits, the Agent stays idle in maintenance: the composer offers no stop, and callers waiting for the Agent to become idle wait as well. Restoring loses changes that were never committed. A base branch that requires a merge queue cannot merge from the panel. With Git Worktrees also enabled, two independent worktree services exist; the model's tool never sees the panel's service. A local or change request diff over `maxDiffBytes`, or one the host refuses, shows no files. Expanding unchanged lines of a change request reads each file from the code host once.
+The panel shows current status only while it is open; checks that finish while nothing is mounted produce no notification. Changes made outside the Session appear after Refresh or the next tool result. Every inspection spawns up to twelve short Git processes in the Session's execution world with one remote, and two more for each further remote it tries for a fork point. A worktree exists only for a Session that requested it before its first step, and a failed or cancelled attempt can leave its branch or checkout behind. A message that enters while the Agent runs a turn or other maintenance gets no hold, so its worktree is created within the first turn and a removed worktree is not checked. While a message waits, the Agent stays idle in maintenance: the composer offers no stop, and callers waiting for the Agent to become idle wait as well. Restoring loses changes that were never committed. A base branch that requires a merge queue cannot merge from the panel. With Git Worktrees also enabled, two independent worktree services exist; the model's tool never sees the panel's service. A local or change request diff over `maxDiffBytes`, or one the host refuses, shows no files. Expanding unchanged lines of a change request reads each file from the code host once.
diff --git a/.agents/notes/implemented/feature/2026-10-09-forge-panel.zh.md b/.agents/notes/implemented/feature/2026-10-09-forge-panel.zh.md
index 9ea88f5ec6..432f2b10a8 100644
--- a/.agents/notes/implemented/feature/2026-10-09-forge-panel.zh.md
+++ b/.agents/notes/implemented/feature/2026-10-09-forge-panel.zh.md
@@ -12,7 +12,7 @@ Status: implemented
 
 [`dsh-experimental-client-ui-forge`](../../../../packages/experimental/client-ui-forge/README.zh.md) 是一个双端包。宿主端的 `forgePanel` Remote 把面板为一个 Session 展示的全部内容组装成一条流式状态；forge 注册表与绑定服务只保留各自的领域操作。客户端包括一个右侧边栏标签页、一个显示或隐藏它的 Session 标题栏按钮、一个新会话选项、一张位于输入框上方的创建卡片、一个 toast，以及[会话列表中的图标与悬浮卡片部分](2026-10-20-forge-session-list.zh.md)。所有界面都把已绑定的条目称为变更请求（forge 注册表的术语），不随代码托管平台的叫法变化。[forge 套件](../../../../packages/experimental/forge-bundle/README.zh.md)把面板、forge 注册表、GitHub 提供方、绑定服务与一个隔离的 worktree 服务作为插件页中默认禁用的一个条目发布。
 
-Remote 通过 Session 的子进程提供方、在 Session 的只读沙箱策略下检查检出，因此它读到的与 Session 命令看到的相同，且无法写入。检查读取顶层目录、Git 目录与公共 Git 目录、分支或缩写的 HEAD 提交、上游与远端，以及分支相对于其分叉点的变更规模。它在 Session 被关注时、每个 `working-directory/change`、`tool/result` 与 `sandbox/mode` 事件之后以及刷新时运行，一次只运行一个，最多再追加一次。
+Remote 通过 Session 的子进程提供方，按其[解析出的权限与查询限制](../bug-fix/2026-10-28-forge-git-session-permissions.zh.md)检查检出，因此它读到的与 Session 命令看到的相同。检查读取顶层目录、Git 目录与公共 Git 目录、分支或缩写的 HEAD 提交、上游与远端，以及分支相对于其分叉点的变更规模。它在 Session 被关注时、每个 `working-directory/change`、`tool/result` 与 `sandbox/mode` 事件之后以及刷新时运行，一次只运行一个，最多再追加一次。
 
 状态轮询跟随面板订阅：只有该 Session 的某个界面挂载时才监听其绑定，注册表停止轮询无人监听的变更请求。每张卡片保留最近一次轮询得到的快照，因此短暂的失败不会让标题与编号消失。Session 只有一个打开的变更请求时，它的卡片默认展开；有多个时全部折叠；用户第一次展开或收起卡片后，以用户的选择为准。
 
@@ -24,7 +24,9 @@ Session 所在的 worktree 可能在 Session 之外被删除。每次检查都
 
 面板不在现有 worktree 之间移动 Session。移除变更请求会追加一条 `dismiss` 记录，它的 toast 通过 `track` 提供“撤销”。
 
-面板还通过变更视图展示 Session 工作背后的变更；变更视图是本包的一个资源标签页类型。Remote 在宿主上把每个 diff 解析成文件与 hunk，因此浏览器无需补丁解析器即可绘制，每次读取都受 `maxDiffBytes` 与 `maxUntrackedFiles` 约束。本地变更来自 Session 执行环境中受限的 `git diff`，范围由用户选择：默认是分支相对于分叉点的变更，也可以是未提交、未暂存或已暂存的变更；未跟踪文件经 Session 的文件系统读取，显示为新文件。变更请求的变更来自代码托管平台，取自绑定最新状态中的 head，经 forge seam 新增的两个提供方读取操作 `diff` 与 `fileText` 获得。Host 为每个变更请求保留最近读到的补丁，按 head 提交与目标分支区分，总量受 `maxCachedDiffBytes` 约束，因此在同一 head 下重新打开、刷新与导航都不会再次下载；托管平台或提供方因结果超过其大小上限而拒绝时报告 forge 失败 `too-large`，视图随之提供变更请求的网页而不是重试。hunk 之间未变更的行从文件的新版本展开，即工作树、暂存区或 head 提交，并且只在该文本仍与 hunk 吻合时展开。每次检查还会为变更卡片统计分支的变更规模；没有打开中的变更请求以当前检出分支为源分支时才显示该卡片。卡片上的“创建变更请求”向 Session 发送一条用户消息，由 Agent 用自己的工具创建变更请求，绑定像其他变更请求一样来自 `gh pr create`。
+面板还通过变更视图展示 Session 工作背后的变更；变更视图是本包的一个资源标签页类型。Remote 在宿主上把每个 diff 解析成文件与 hunk，因此浏览器无需补丁解析器即可绘制，每次读取都受 `maxDiffBytes` 与 `maxUntrackedFiles` 约束。本地变更来自使用 Session 权限与执行环境的 `git diff`，范围由用户选择：默认是分支相对于分叉点的变更，也可以是未提交、未暂存或已暂存的变更；未跟踪文件经 Session 的文件系统读取，显示为新文件。变更请求的变更来自代码托管平台，取自绑定最新状态中的 head，经 forge seam 新增的两个提供方读取操作 `diff` 与 `fileText` 获得。Host 为每个变更请求保留最近读到的补丁，按 head 提交与目标分支区分，总量受 `maxCachedDiffBytes` 约束，因此在同一 head 下重新打开、刷新与导航都不会再次下载；托管平台或提供方因结果超过其大小上限而拒绝时报告 forge 失败 `too-large`，视图随之提供变更请求的网页而不是重试。hunk 之间未变更的行从文件的新版本展开，即工作树、暂存区或 head 提交，并且只在该文本仍与 hunk 吻合时展开。每次检查还会为变更卡片统计分支的变更规模；没有打开中的变更请求以当前检出分支为源分支时才显示该卡片。卡片上的“创建变更请求”向 Session 发送一条用户消息，由 Agent 用自己的工具创建变更请求，绑定像其他变更请求一样来自 `gh pr create`。
+
+评审评论在用户选择代码时固定文件、侧、行范围、完整 hunk 与所评审的 head。Agent 引用进入既有输入框引用机制，由用户决定批量发送，发送后的消息记录模型实际收到的内容。GitHub 写入属于 forge 提供方的可选操作：预检核对当前 head，写入明确指向该提交；结果不明时阻止再次写入，直到用户核对。评审草稿与行内记录归浏览器页签实例所有，不进入 Session 日志，也不创建 GitHub 待提交评审。切换 Session 保留该实例；关闭时丢弃本地状态并拒绝迟到的写入结果。已发布的 GitHub 评论仍保留在外部平台。
 
 ## Deferred
 
@@ -79,6 +81,12 @@ Session 所在的 worktree 可能在 Session 之外被删除。每次检查都
 
 **直接在卡片上创建变更请求。** 面板需要推送分支并撰写标题与描述；发送消息让 Agent 用自己的工具和用户的指示完成这两件事，绑定变更请求的方式也只保留一种。
 
+**把每条行内评论立即发送给 Agent。** 用户还没来得及收集相关评论或补充共同指令，就会开始一轮；输入框引用保留用户的选择。
+
+**关闭页签后仍保留评审草稿。** 重新打开同一个 PR 会恢复已放弃的评审状态。页签实例让关闭明确表示丢弃，同时保留切换 Session 的状态。
+
+**自动重试评审写入。** 丢失响应不代表 GitHub 拒绝了请求。保留发出的请求并要求核对，可以避免传输失败悄悄产生重复评论。
+
 ## Consequences
 
-面板只在打开时显示当前状态；没有任何界面挂载时检查结束不会有通知。Session 之外的改动要等到刷新或下一个工具结果才会出现。只有一个远端时，每次检查最多在 Session 的执行环境中启动十一个短暂的 Git 进程；为寻找分叉点每多尝试一个远端，就多启动两个。只有在第一步之前提出请求的 Session 才会有 worktree，失败或被取消的尝试可能留下它的分支或检出。Agent 正在运行一轮或其他维护任务时进入的消息不会被暂留，因此它的 worktree 在第一轮之内创建，已删除的 worktree 也不会被检查。消息等待期间，Agent 以空闲状态处于维护任务中：输入框不提供停止，等待 Agent 空闲的调用方也会一并等待。恢复会丢失从未提交的修改。要求合并队列的基准分支无法从面板合并。同时启用 Git Worktrees 时会存在两个互不影响的 worktree 服务；模型的工具看不到面板的服务。本地或变更请求的 diff 超过 `maxDiffBytes`，或被托管平台拒绝时，不显示任何文件。展开变更请求中未变更的行时，每个文件只从托管平台读取一次。
+面板只在打开时显示当前状态；没有任何界面挂载时检查结束不会有通知。Session 之外的改动要等到刷新或下一个工具结果才会出现。只有一个远端时，每次检查最多在 Session 的执行环境中启动十二个短暂的 Git 进程；为寻找分叉点每多尝试一个远端，就多启动两个。只有在第一步之前提出请求的 Session 才会有 worktree，失败或被取消的尝试可能留下它的分支或检出。Agent 正在运行一轮或其他维护任务时进入的消息不会被暂留，因此它的 worktree 在第一轮之内创建，已删除的 worktree 也不会被检查。消息等待期间，Agent 以空闲状态处于维护任务中：输入框不提供停止，等待 Agent 空闲的调用方也会一并等待。恢复会丢失从未提交的修改。要求合并队列的基准分支无法从面板合并。同时启用 Git Worktrees 时会存在两个互不影响的 worktree 服务；模型的工具看不到面板的服务。本地或变更请求的 diff 超过 `maxDiffBytes`，或被托管平台拒绝时，不显示任何文件。展开变更请求中未变更的行时，每个文件只从托管平台读取一次。
diff --git a/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.i18n.yaml b/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.i18n.yaml
index 4a98c2f555..c8b3188032 100644
--- a/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.i18n.yaml
+++ b/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.i18n.yaml
@@ -18,11 +18,11 @@
   en: 1310a89c351e5bfe
   zh: e6386ae10b893c2d
 /agent-note-performance-baselines-for-large-session-corpora/decision/measured-endpoints:
-  en: 11937dfa4a349a19
-  zh: b91a136890fe92e8
+  en: add81088ce51033f
+  zh: c7065dc3052648fa
 /agent-note-performance-baselines-for-large-session-corpora/calibration-evidence:
-  en: f934c95748dcbfe0
-  zh: df6a68286c21510f
+  en: adb815c213373d8e
+  zh: 44d4c6752a4df51f
 /agent-note-performance-baselines-for-large-session-corpora/alternatives-considered:
   en: 4eaa4666262a1aee
   zh: 7e2eb44b94bad05d
diff --git a/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.md b/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.md
index 2efe66ead2..7890b73070 100644
--- a/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.md
+++ b/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.md
@@ -47,6 +47,8 @@ The shared corpus and projection-list controller fixture awaits controller activ
 
 The file must finish within five minutes on standard hosted CI, including seeding, and its last case asserts that limit. Search over 1,000 Sessions and one fork of the longest Session take about 170 s of it, so each has one sample. The list corpus is the largest that fits the remainder. Budgets enforce medians of list boot, first, and repeat, and of the fork median over strata and rank 990; search and the longest fork enforce their single samples. Search and fork use separate 1,000-Session roots, so fork children never reach the search index. Rank 988 is the highest top-level rank at the measured p99 (7,229 events); forking a subagent child adds a lineage lookup, and rank 990 already falls in the 99.3% anchor. Peak RSS of the list, search, and fork processes has a budget with the shared 1.25 headroom and no time scale. Each child's deadline equals the file limit, and each test's deadline outlasts its sequential children, so a failed case reaps every child before the scratch root is removed.
 
+Fork workers use a 512 MiB V8 old-space limit so every runner measures the same heap constraint. The corpus, timed endpoints, and whole-process peak RSS budget stay unchanged; native buffers still count toward RSS. The longest fork retains about 193 MiB after collection, so the limit leaves room for live objects while forcing collection before a larger host-selected heap delays it. This measures a bounded-heap workload, not the default-heap peak of every deployment.
+
 ## Calibration evidence
 
 Budgets use standard two-CPU hosted CI expectations (Linux x64, Node 24.21, PR #5403), rounded above the higher recorded median across the AMD EPYC 7763 and EPYC 9V74 runners and multiplied by the shared 1.25 headroom. Samples varied by up to 15% within one run; the runner models differed by up to 25% per endpoint. The hosted-to-reference ratio is 2.4 to 3.4, above the shared reference scale of 2, so reference-machine scaling would reject ordinary hosted runs.
@@ -67,6 +69,8 @@ With seeding in one process, the complete file took 294.5 s on the EPYC 7763 run
 
 On Apple M5 Pro with Node 26.5, isolated runs measured list 1,000 at 311–358 ms first, list 5,000 at 1,364–1,603 ms first, search at 57 s first, and fork of the longest Session at 6.0–6.4 s. A 10,000-Session list took 3.2–5.4 s for the first call with 1.9 GB peak RSS.
 
+Node 24.22 hosted runs of the unchanged longest-fork workload recorded 696 MiB peak RSS on EPYC 9V74 and 1,077.7 MiB on EPYC 7763, against the same 938 MiB budget. On Apple M5 Pro with Node 24.19, two default-heap runs retained 192.8–193.4 MiB and peaked at 770.7–812.6 MiB in 2.416–2.447 s; two 512 MiB old-space runs retained the same range and peaked at 764.2–764.7 MiB in 2.487–2.528 s. The fixed limit controls the heap policy without raising the RSS or timing budgets.
+
 ## Alternatives considered
 
 - **Sanitized copies of real Sessions.** Rejected: benchmarks never use recorded user material.
diff --git a/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.zh.md b/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.zh.md
index f964d640b8..132619b19d 100644
--- a/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.zh.md
+++ b/.agents/notes/implemented/testing/2026-09-28-session-corpus-performance.zh.md
@@ -47,6 +47,8 @@ worker 是编译后的纯 Node 进程，每次都针对已播种根目录全新
 
 此文件（包括播种）必须在标准托管 CI 上五分钟内完成，其最后一个用例断言该上限。1,000 个 Session 的搜索和最长 Session 的一次 fork 约占其中 170 s，因此两者各取一个样本。列表语料是剩余时间内能容纳的最大规模。预算约束列表启动、首次和重复的中位数，以及 fork 分层中位数和排名 990 的中位数；搜索和最长 fork 约束各自的单个样本。搜索和 fork 使用各自独立的 1,000 个 Session 根目录，因此 fork 子会话不会进入搜索索引。排名 988 是实测 p99（7,229 个事件）上最高的顶层排名；fork subagent 子会话会增加一次谱系查找，而排名 990 已落入 99.3% 锚点。列表、搜索和 fork 进程的峰值 RSS 设有预算，使用共享的 1.25 余量，不做时间缩放。每个子进程的截止时间等于文件上限，每个测试的截止时间长于其顺序子进程之和，因此失败的用例会在删除临时根目录之前回收所有子进程。
 
+Fork worker 使用 512 MiB 的 V8 old-space 上限，让各运行器在相同的堆约束下测量。语料、计时终点和整个进程的峰值 RSS 预算保持不变，原生缓冲区仍计入 RSS。最长 fork 回收后保留约 193 MiB，因此该上限为存活对象保留空间，同时避免较大的宿主默认堆延迟回收。该用例测量受限堆下的工作负载，不代表每种部署默认堆下的峰值。
+
 ## 校准证据
 
 预算使用标准双 CPU 托管 CI 的期望值（Linux x64、Node 24.21、PR #5403），取高于 AMD EPYC 7763 与 EPYC 9V74 运行器中较高记录中位数的整数，再乘以共享的 1.25 余量。同一次运行内的样本差异最多 15%；两种运行器型号在单个端点上最多相差 25%。托管与参考机器的比值为 2.4 到 3.4，高于共享的参考缩放系数 2，因此按参考机器缩放会拒绝正常的托管运行。
@@ -67,6 +69,8 @@ worker 是编译后的纯 Node 进程，每次都针对已播种根目录全新
 
 在 Apple M5 Pro 和 Node 26.5 上的隔离运行中，1,000 个 Session 的首次列表为 311–358 ms，5,000 个 Session 的首次列表为 1,364–1,603 ms，首次搜索为 57 s，fork 最长 Session 为 6.0–6.4 s。10,000 个 Session 的首次列表耗时 3.2–5.4 s，峰值 RSS 为 1.9 GB。
 
+未改动的最长 fork 工作负载在 Node 24.22 托管运行中，EPYC 9V74 的峰值 RSS 为 696 MiB，EPYC 7763 为 1,077.7 MiB，使用的预算均为 938 MiB。在 Apple M5 Pro、Node 24.19 上，两次默认堆运行回收后保留 192.8–193.4 MiB，峰值为 770.7–812.6 MiB，耗时 2.416–2.447 s；两次 512 MiB old-space 运行保留量相同，峰值为 764.2–764.7 MiB，耗时 2.487–2.528 s。固定上限用于控制堆策略，没有提高 RSS 或耗时预算。
+
 ## 考虑过的替代方案
 
 - **脱敏复制真实 Session。** 已否决：基准从不使用录制的用户材料。
diff --git a/.agents/skills/record-browser-gif/SKILL.md b/.agents/skills/record-browser-gif/SKILL.md
index a16f8294e9..1fa60fcb4f 100644
--- a/.agents/skills/record-browser-gif/SKILL.md
+++ b/.agents/skills/record-browser-gif/SKILL.md
@@ -1,6 +1,6 @@
 ---
 name: record-browser-gif
-description: Record browser or Web UI interaction demos as optimized GIFs using the available browser-control workflow, optional Playwright Videos for higher capture frame rates, and deterministic encoding, then attach the GIF to a pull request with `gh --attach`, falling back to a dedicated assets branch where attach cannot apply. Use when asked to make, record, or generate a GIF that demonstrates a browser workflow, and for every pull request that changes product-user-visible GUI behavior, which MUST include a GIF recorded from the pull request's real server and model flow.
+description: Record browser or Web UI interaction demos as optimized GIFs using the available browser-control workflow, optional Playwright Videos for higher capture frame rates, and deterministic encoding, then attach the GIF to a pull request with `gh --attach`; publication requires gh v2.99.0 or later, and a GIF over 5 MiB is split into parts. Use when asked to make, record, or generate a GIF that demonstrates a browser workflow, and for every pull request that changes product-user-visible GUI behavior, which MUST include a GIF recorded from the pull request's real server and model flow.
 ---
 
 # Record Browser GIF
@@ -17,8 +17,8 @@ The recording itself is part of the evidence: use a real server booted from that
 
 ## Keep recording separate from publication
 
-- Recording produces local video or screenshots and one `.gif` artifact only; it never mutates remote state.
-- Publication — attaching the GIF to a pull request body with `gh --attach`, or pushing it to an assets branch and embedding its URL where attach cannot apply — is the separate final step, performed only when the task includes attaching the GIF to a pull request. It never touches the pull request's own branch.
+- Recording produces local video or screenshots; encoding produces one `.gif` artifact, or its [numbered parts](#attach-with-gh) when it exceeds the 5 MiB limit. Neither mutates remote state.
+- Publication — attaching the GIF to a pull request body with `gh --attach` — is the separate final step, performed only when the task includes attaching the GIF to a pull request. It never commits to any branch.
 - Preserve the requested recording conditions. A real-server or real-API demo must not use fixture queries, mock transports, synthetic event injection, or test-only hooks. If credentials or the server are unavailable, report that limitation instead of substituting a fixture.
 - Never read or expose credential values. Use the application's normal configuration path and a benign demonstration prompt.
 
@@ -117,13 +117,15 @@ Encoder maintenance: run `python3 -m unittest discover -s "$GIF_SKILL_DIR/script
 
 Perform this step only when the task includes attaching the GIF to a pull request.
 
-Never commit a GIF to the pull request's own branch or any branch that merges into a long-lived branch: binary media committed there bloats the repository history for every future clone. Prefer `gh --attach`, which uploads the GIF to GitHub and rewrites the body reference in one command, so no branch carries the media.
+Never commit a GIF to the pull request's own branch or any other branch: every default clone and full-history fetch of the repository downloads media committed to any branch. Publish only with `gh --attach`, which uploads the GIF to GitHub and rewrites the body reference in one command, so no branch carries the media.
 
 ### Attach with gh
 
-`gh --attach` requires `gh` v2.99.0 or later (`gh --version`), a repository on github.com — GitHub Enterprise Server is not supported — write access to the repository, and a GIF at or below 10 MB. Confirm the verified artifact fits that limit; when it does not, shrink it with `--max-width`, then `--colors` or `--fps`, before attaching.
+Before attaching, check `gh --version`. `gh --attach` requires `gh` v2.99.0 or later, a repository on github.com — GitHub Enterprise Server is not supported — and write access to the repository. When `gh` is older than v2.99.0, stop and tell the developer to upgrade `gh` to v2.99.0 or later; keep the verified GIF for the retry, and do not install or upgrade `gh` without authorization. When any other requirement is unmet or the attach fails — authentication, write access, a repository outside github.com, or an upload error — stop and report it to the developer. Never publish the GIF any other way.
 
-Write the GIF into the body file as an ordinary local-path reference, using the same path passed to `--attach`; `gh` rewrites the reference in place to the uploaded URL, keeping its position and alt text:
+Publish GIFs at or below 5 MiB, the encoder's default `--max-bytes`. When the encoder rejects the output for size, shrink it with `--max-width`, then `--colors` or `--fps`. When the GIF still exceeds 5 MiB at readable text quality, split it instead: encode consecutive, non-overlapping intervals of the same evidence run into numbered parts that each pass the encoder's size check — `--start` and `--end` over the one video, or consecutive screenshot subsets selected with `--pattern` — and verify every part as an artifact. Beside each embed, state its position (such as `2/3`) and its source interval or frames.
+
+Write each GIF into the body file as an ordinary local-path reference, using the same path passed to `--attach`; `gh` rewrites each reference in place to its uploaded URL, keeping its position and alt text, so the order of references in the body sets the display order of split parts:
 
 ```markdown
 ![<alt text>](<path/to/demo.gif>)
@@ -138,35 +140,8 @@ gh pr create --body-file <body.md> --attach <path/to/demo.gif>     # new pull re
 gh pr edit <pr> --body-file <body.md> --attach <path/to/demo.gif>  # existing pull request
 ```
 
-`--attach` is repeatable but refuses the same file twice. A GIF the body does not reference is appended at the end, where alt text set on the flag (`--attach '<path>#<alt text>'`) applies; a rewritten reference keeps the body's alt text. After attaching, re-read the demonstrated live head and require it to remain at that recorded commit. Re-read the live body and confirm the reference now points at the uploaded URL, render the body through GitHub's Markdown API and confirm the expected `<img>`, and fetch the uploaded URL once to confirm `200` and `image/gif`.
+`--attach` is repeatable but refuses the same file twice. Publish split parts in one `gh pr create` or `gh pr edit` with one `--attach` per part, so a single pair of live-head checks covers every part. A GIF the body does not reference is appended at the end, where alt text set on the flag (`--attach '<path>#<alt text>'`) applies; a rewritten reference keeps the body's alt text. After attaching, re-read the demonstrated live head and require it to remain at that recorded commit. Re-read the live body and confirm the reference now points at the uploaded URL, render the body through GitHub's Markdown API and confirm the expected `<img>`, and fetch the uploaded URL once to confirm `200` and `image/gif`.
 
-### Fall back to an assets branch
+### Existing assets branches
 
-Use the assets-branch workflow only when `gh --attach` cannot apply: the GIF still exceeds 10 MB, `gh` is older than v2.99.0, or the repository is not on github.com. GIFs then live on a dedicated orphan assets branch — a branch with no parent commit and nothing but media — and one assets branch serves a whole pull request series (named `<series>-assets`; list existing ones with `git ls-remote --heads origin '*assets*'`).
-
-Before either workflow below pushes, verify that the assets branch contains media only and that the staged GIF's checksum matches the verified local artifact.
-
-For an existing assets branch, work in a shallow single-branch scratch clone so the publication cannot touch your working tree:
-
-```sh
-git clone --branch <assets-branch> --single-branch --depth 1 <repo-url> /tmp/assets-checkout
-cp /absolute/path/to/demo.gif /tmp/assets-checkout/<name>.gif
-cd /tmp/assets-checkout
-git add <name>.gif
-git commit -m "assets: <what it shows> gif (#<pr>)"
-git push origin <assets-branch>
-```
-
-For a new series, make a fresh shallow scratch clone (`git clone --depth 1 <repo-url> /tmp/assets-checkout`), create the orphan branch with `git switch --orphan <assets-branch>`, then add the GIF, commit, and push the same way.
-
-After pushing, use authenticated GitHub API or raw requests to confirm the remote path, byte size, checksum, `200` response, and `image/gif` content type. An anonymous `404` does not disprove a private-repository asset; authenticate the verification instead. This proves the repository-member review path, not public availability.
-
-Immediately before editing the pull-request body, re-read the demonstrated pull request's live head and compare it with the commit recorded next to the GIF. Stop and re-record when it moved. After the edit, re-read the demonstrated live head and require it to remain at that recorded commit. Separately, render the body through GitHub's Markdown API and confirm that the expected `<img>` is present.
-
-Embed the GIF in the pull request body with the raw blob URL; the `?raw=true` suffix is required, because the plain blob URL renders GitHub's file page instead of the image:
-
-```markdown
-![<alt text>](https://github.com/<owner>/<repo>/blob/<assets-branch>/<name>.gif?raw=true)
-```
-
-Never delete or rewrite an assets branch, and never force-push it: merged pull request bodies reference its URLs forever. Append new commits only.
+Earlier pull request bodies embed GIFs from orphan `*-assets` branches in this repository. Never add to, delete, rewrite, or force-push them: merged pull request bodies reference their URLs.
diff --git a/.github/workflows/ci-master.yml b/.github/workflows/ci-master.yml
index 5620e6af63..d69a860098 100644
--- a/.github/workflows/ci-master.yml
+++ b/.github/workflows/ci-master.yml
@@ -14,6 +14,7 @@ on:
           - larger-runner-benchmark
           - consolidated-runner-benchmark
           - ssh-helper
+          - wine
 
 # New master pushes and manual runs replace obsolete checks in this workflow/ref.
 # Standby drills share cancellation; use completed runs as readiness evidence.
@@ -49,9 +50,9 @@ jobs:
     secrets:
       DEEPSEEK_API_KEY_EXTERNAL: ${{ secrets.DEEPSEEK_API_KEY_EXTERNAL }}
 
-  # Wine runs once here, independently of the native serial standby aggregates.
+  # Wine runs on master pushes or an explicit suite=wine dispatch, independently of native standbys.
   windows:
-    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
+    if: (github.event_name == 'push' && github.ref == 'refs/heads/master') || (github.event_name == 'workflow_dispatch' && inputs.suite == 'wine')
     runs-on: ubuntu-latest
     name: windows node 24 / wine
     timeout-minutes: 15
diff --git a/.github/workflows/cua-helper-package.yml b/.github/workflows/cua-helper-package.yml
new file mode 100644
index 0000000000..20ecb7526f
--- /dev/null
+++ b/.github/workflows/cua-helper-package.yml
@@ -0,0 +1,83 @@
+name: Package CUA helper · macOS
+
+on:
+  workflow_dispatch:
+    inputs:
+      source_ref:
+        description: '同仓库可信源码分支或 dsh-v* tag'
+        type: string
+        default: master
+        required: true
+      preset:
+        description: '机器上的签名配置'
+        type: choice
+        options: [test, production]
+        default: test
+        required: true
+  workflow_call:
+    inputs:
+      source_ref:
+        type: string
+        required: true
+      preset:
+        type: string
+        default: production
+    outputs:
+      artifact:
+        description: '包含两个架构的已签名、公证 helper 归档'
+        value: ${{ jobs.package.outputs.artifact }}
+
+permissions:
+  contents: read
+
+# Desktop uses the same keychain search list and optional system proxy transaction.
+concurrency:
+  group: macos-desktop-package
+  cancel-in-progress: false
+
+jobs:
+  package:
+    runs-on: [self-hosted, macOS, ARM64, dsh-mac-package-trial]
+    timeout-minutes: 60
+    outputs:
+      artifact: ${{ steps.artifact.outputs.name }}
+    env:
+      DSH_PACKAGING_PRESET: ${{ inputs.preset }}
+      DSH_TELEMETRY_DISABLED: '1'
+      PACKAGE_SOURCE_REF: ${{ inputs.source_ref }}
+    steps:
+      - uses: actions/checkout@v7.0.1
+        with:
+          ref: ${{ inputs.source_ref }}
+          persist-credentials: false
+          clean: true
+      - name: Validate source selection
+        run: |
+          node -e 'const cp=require("node:child_process"); const fs=require("node:fs"); const ref=process.env.PACKAGE_SOURCE_REF;
+          if(ref.startsWith("refs/pull/") || /^[a-f0-9]{40}$/i.test(ref)) throw Error("Select a trusted repository branch or release tag");
+          const tag=ref.replace(/^refs\/tags\//, "");
+          if(tag.startsWith("dsh-v") && tag!=="dsh-v"+JSON.parse(fs.readFileSync("package.json","utf8")).version) throw Error("Release tag must match product version");
+          if(!["test","production"].includes(process.env.DSH_PACKAGING_PRESET)) throw Error("Invalid preset");'
+      - uses: pnpm/action-setup@v5.0.0
+        with:
+          dest: ${{ runner.temp }}/setup-pnpm-cua-${{ github.run_id }}-${{ github.run_attempt }}
+      - uses: actions/setup-node@v7.0.0
+        with:
+          node-version: '24'
+          package-manager-cache: false
+      - name: Install locked dependencies
+        run: pnpm install --frozen-lockfile
+      - name: Build and verify notarized applications
+        run: |
+          mkdir -p dist
+          pnpm exec tsx scripts/cua-helper/package.ts --out dist/cua-helper
+      - name: Name retained artifact
+        id: artifact
+        run: echo "name=cua-helper-${GITHUB_RUN_ID}-${GITHUB_RUN_ATTEMPT}" >> "$GITHUB_OUTPUT"
+      - uses: actions/upload-artifact@v7.0.1
+        with:
+          name: ${{ steps.artifact.outputs.name }}
+          path: dist/cua-helper/*
+          if-no-files-found: error
+          compression-level: 0
+          retention-days: 14
diff --git a/.github/workflows/release-publish.yml b/.github/workflows/release-publish.yml
index ec03a117de..eb7e3a5eef 100644
--- a/.github/workflows/release-publish.yml
+++ b/.github/workflows/release-publish.yml
@@ -1,12 +1,28 @@
 # Publish the dsh release sequence to npm. This workflow is manual-only
 # (workflow_dispatch) and intentionally does not listen to pull_request or push:
-# publication must always be an explicit, reviewed act from a dsh-v* tag, and it
-# must never appear as a PR check. It repacks the current tree before publishing
+# publication is an explicit, reviewed act; dsh-v* tag validation is enabled by
+# default and may be skipped through the dispatch input. It never appears as a PR check. It repacks the current tree before publishing
 # so the bytes uploaded are exactly what this dispatch produced.
 name: Release publish (dsh)
 
 on:
   workflow_dispatch:
+    inputs:
+      cua_run_id:
+        description: '已有 CUA 打包 run ID：留空重新打包；填写时复用同一源码和版本的已验证产物'
+        type: string
+        required: false
+        default: ''
+      cua_run_attempt:
+        description: 'CUA 打包 attempt：仅与 run ID 一起使用；留空选择最新一次，不回退到更早的成功构建'
+        type: string
+        required: false
+        default: ''
+      skip-tag-check:
+        description: Skip release tag validation for the selected ref; other publication checks still apply.
+        type: boolean
+        required: false
+        default: false
 
 permissions:
   contents: read
@@ -16,9 +32,23 @@ env:
   DSH_TELEMETRY_DISABLED: '1'
 
 jobs:
+  cua-helper:
+    if: (startsWith(github.ref, 'refs/tags/dsh-v') || inputs.skip-tag-check) && inputs.cua_run_id == '' && inputs.cua_run_attempt == ''
+    uses: ./.github/workflows/cua-helper-package.yml
+    with:
+      source_ref: ${{ github.ref }}
+      preset: production
+
   pack:
     name: Pack npm tarballs
+    needs: cua-helper
+    if: >-
+      ${{ !cancelled() && (needs.cua-helper.result == 'success'
+        || (needs.cua-helper.result == 'skipped' && (inputs.cua_run_id != '' || inputs.cua_run_attempt != ''))) }}
     runs-on: ubuntu-24.04
+    permissions:
+      contents: read
+      actions: read
     steps:
       # Complete history: the release scripts read tags.
       - uses: actions/checkout@v7.0.1
@@ -55,10 +85,50 @@ jobs:
       - name: Verify release version
         env:
           RELEASE_PUBLISH: 'true'
-        run: pnpm run release:verify --family dsh
+        run: pnpm run release:verify --family dsh ${{ inputs.skip-tag-check && '--skip-tag-check' || '' }}
+
+      - name: Select retained CUA helper
+        if: inputs.cua_run_id != '' || inputs.cua_run_attempt != ''
+        id: retained-cua
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: pnpm exec tsx scripts/cua-helper/select-artifact.ts
+
+      - name: Download retained CUA helper
+        if: inputs.cua_run_id != '' || inputs.cua_run_attempt != ''
+        uses: actions/download-artifact@v8.0.1
+        with:
+          artifact-ids: ${{ steps.retained-cua.outputs.artifact-id }}
+          run-id: ${{ inputs.cua_run_id }}
+          github-token: ${{ github.token }}
+          path: dist/cua-helper
 
       - name: Build
-        run: pnpm run build:official
+        run: pnpm run build:official --serial
+
+      - name: Download freshly built CUA helper
+        if: inputs.cua_run_id == '' && inputs.cua_run_attempt == ''
+        uses: actions/download-artifact@v8.0.1
+        with:
+          name: ${{ needs.cua-helper.outputs.artifact }}
+          path: dist/cua-helper
+
+      - name: Stage verified native helper applications
+        run: |
+          mkdir dist/cua-helper/extracted
+          tar -xzf dist/cua-helper/cua-helper.tgz -C dist/cua-helper/extracted
+          pnpm exec tsx scripts/cua-helper/stage.ts --from dist/cua-helper/extracted
+
+      - name: Record CUA source and publication retry instructions
+        env:
+          CUA_RUN_ID: ${{ inputs.cua_run_id || github.run_id }}
+          CUA_RUN_ATTEMPT: ${{ steps.retained-cua.outputs.attempt || github.run_attempt }}
+        run: |
+          {
+            printf 'CUA helper: run `%s`, attempt `%s`.\n\n' "$CUA_RUN_ID" "$CUA_RUN_ATTEMPT"
+            printf '%s\n\n' 'npm 部分发布失败时，只重跑 Publish to npm job，复用原 dsh-npm-tarballs；不要重跑全部 job。'
+            printf '若需新建发布运行，填写 `cua_run_id=%s`、`cua_run_attempt=%s`，并使用相同源码 commit 和版本。\n' "$CUA_RUN_ID" "$CUA_RUN_ATTEMPT"
+          } >> "$GITHUB_STEP_SUMMARY"
 
       - name: Pack release tarballs
         run: pnpm run release:pack --family dsh --out dist/npm
diff --git a/.github/workflows/windows-package.yml b/.github/workflows/windows-package.yml
index cbb4fd2642..29229605de 100644
--- a/.github/workflows/windows-package.yml
+++ b/.github/workflows/windows-package.yml
@@ -53,11 +53,6 @@ on:
         type: string
         default: ''
         required: false
-      build_root:
-        description: '独立构建根目录：填写绝对路径，每次任务创建独立源码副本；留空使用 runner 工作区'
-        type: string
-        default: ''
-        required: false
 
 permissions:
   contents: read
@@ -82,7 +77,6 @@ jobs:
       PACKAGE_TEST_RELEASE_ID: ${{ inputs.test_release_id }}
       PACKAGE_SIGNING: ${{ inputs.signing }}
       PACKAGE_CACHE_NAMESPACE: ${{ inputs.cache_namespace }}
-      PACKAGE_BUILD_ROOT: ${{ inputs.build_root }}
       PACKAGE_WINDOWS_COMPRESSION_LEVEL: ${{ inputs.compression_level }}
     steps:
       - name: Reset packaging checkout
@@ -106,7 +100,7 @@ jobs:
         run: |
           $helpers = Join-Path $env:RUNNER_TEMP "packaging-helpers-$env:GITHUB_RUN_ID-$env:GITHUB_RUN_ATTEMPT"
           New-Item -ItemType Directory -Path $helpers -ErrorAction Stop | Out-Null
-          foreach ($name in @('windows-packaging-priority.ps1', 'windows-build-workspace.mjs')) {
+          foreach ($name in @('windows-packaging-priority.ps1')) {
             Copy-Item -LiteralPath (Join-Path 'apps/desktop/scripts' $name) -Destination $helpers -ErrorAction Stop
           }
           "PACKAGE_CI_HELPERS=$helpers" >> $env:GITHUB_ENV
@@ -140,17 +134,6 @@ jobs:
       - uses: actions/setup-node@v7.0.0
         with:
           node-version: '24'
-      - name: Select packaging workspace
-        id: build_workspace
-        env:
-          PACKAGE_SOURCE_SHA: ${{ steps.checkout.outputs.commit }}
-        run: |
-          if (!$env:PACKAGE_BUILD_ROOT) {
-            "directory=$env:GITHUB_WORKSPACE" >> $env:GITHUB_OUTPUT
-          } else {
-            node "$env:PACKAGE_CI_HELPERS/windows-build-workspace.mjs"
-            exit $LASTEXITCODE
-          }
       - name: Configure persistent pnpm store
         # PNPM_HOME belongs to this run; keep downloaded packages outside its temporary directory.
         env:
@@ -167,7 +150,6 @@ jobs:
           "DSH_DESKTOP_PACKAGE_CACHE_DIR=$env:DSH_DESKTOP_PACKAGE_CACHE_DIR" >> $env:GITHUB_ENV
           "PNPM_CONFIG_STORE_DIR=$storeRoot" >> $env:GITHUB_ENV
       - name: Install locked dependencies
-        working-directory: ${{ steps.build_workspace.outputs.directory }}
         run: |
           & "$env:PACKAGE_CI_HELPERS/windows-packaging-priority.ps1" -BestEffort
           node -e "const os=require('node:os'); console.log(JSON.stringify({node:process.version,availableParallelism:os.availableParallelism(),logicalCpus:os.cpus().length,totalMemoryBytes:os.totalmem(),freeMemoryBytes:os.freemem()}))"
@@ -178,12 +160,10 @@ jobs:
           exit $LASTEXITCODE
       - name: Validate preset and resolve build version
         id: settings
-        working-directory: ${{ steps.build_workspace.outputs.directory }}
         env:
           PACKAGE_BUILD_VERSION: ${{ inputs.build_version }}
         run: node apps/desktop/scripts/prepare-windows-ci.mjs
       - name: Check packaging configuration and toolchain
-        working-directory: ${{ steps.build_workspace.outputs.directory }}
         env:
           PACKAGE_VERSION: ${{ steps.settings.outputs.version }}
         run: |
@@ -192,23 +172,16 @@ jobs:
           pnpm @packageArgs
           exit $LASTEXITCODE
       - name: Build installer and verify packaged runtime
-        working-directory: ${{ steps.build_workspace.outputs.directory }}
         env:
           PACKAGE_VERSION: ${{ steps.settings.outputs.version }}
-          PACKAGE_BUILD_TEMP: ${{ steps.build_workspace.outputs.temporaryDirectory }}
         run: |
           & "$env:PACKAGE_CI_HELPERS/windows-packaging-priority.ps1" -BestEffort
-          if ($env:PACKAGE_BUILD_TEMP) {
-            $env:TEMP = $env:PACKAGE_BUILD_TEMP
-            $env:TMP = $env:PACKAGE_BUILD_TEMP
-          }
           $packageArgs = @('run', 'package:desktop:win:x64', '--build-version', $env:PACKAGE_VERSION)
           if ($env:PACKAGE_SIGNING -eq 'unsigned') { $packageArgs += '--unsigned' }
           pnpm @packageArgs
           exit $LASTEXITCODE
       - name: Retain complete package outside the checkout
         id: retained
-        working-directory: ${{ steps.build_workspace.outputs.directory }}
         env:
           PACKAGE_SOURCE_SHA: ${{ steps.checkout.outputs.commit }}
           PACKAGE_VERSION: ${{ steps.settings.outputs.version }}
@@ -219,7 +192,7 @@ jobs:
         with:
           name: windows-package-logs-${{ github.run_id }}-${{ github.run_attempt }}
           include-hidden-files: true
-          path: ${{ steps.build_workspace.outputs.directory || github.workspace }}/apps/desktop/.desktop-build/packaging-runs/
+          path: ${{ github.workspace }}/apps/desktop/.desktop-build/packaging-runs/
           if-no-files-found: warn
           retention-days: 14
       - name: Retain verified unsigned installer
@@ -242,8 +215,3 @@ jobs:
           path: ${{ steps.retained.outputs.directory }}/*
           if-no-files-found: error
           retention-days: 14
-      - name: Remove isolated packaging workspace
-        if: success() && inputs.build_root != ''
-        env:
-          PACKAGE_SOURCE_SHA: ${{ steps.checkout.outputs.commit }}
-        run: node "$env:PACKAGE_CI_HELPERS/windows-build-workspace.mjs" --remove
diff --git a/.gitignore b/.gitignore
index 3cb86ce87d..4d52487a06 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,3 +47,6 @@ worktrees/
 .agents/worktrees/
 .typert-*/
 native/system/test/bin/
+
+# Generated company-signed CUA release record.
+/packages/experimental/cua-macos/cua-helper.json
diff --git a/apps/cli/package.json b/apps/cli/package.json
index 5d3533dab6..463f4f1b9e 100644
--- a/apps/cli/package.json
+++ b/apps/cli/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh",
   "description": "dsh CLI: profile launch, plugin management, and configuration inspection",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -104,9 +104,9 @@
     "@deepseek-ai/dsh-experimental-ralph-bundle": "workspace:*",
     "@deepseek-ai/dsh-experimental-session-titles-bundle": "workspace:*",
     "@deepseek-ai/dsh-experimental-terminal-bundle": "workspace:*",
+    "@deepseek-ai/dsh-experimental-liveshare": "workspace:*",
     "@deepseek-ai/dsh-experimental-session-search": "workspace:*",
     "@deepseek-ai/dsh-experimental-tool-worktree": "workspace:*",
-    "@deepseek-ai/dsh-cua-bundle": "workspace:*",
     "@deepseek-ai/dsh-experimental-plugin-market-bundle": "workspace:*",
     "@deepseek-ai/dsh-personalized-recommendations": "workspace:*",
     "@deepseek-ai/dsh-experimental-forge-bundle": "workspace:*"
diff --git a/apps/desktop-host/package.json b/apps/desktop-host/package.json
index 6ec553654d..93469b15f2 100644
--- a/apps/desktop-host/package.json
+++ b/apps/desktop-host/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-desktop-host",
   "description": "Private Node-mode host process for the Electron desktop application",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "private": true,
   "license": "MIT",
   "type": "module",
diff --git a/apps/desktop/README.i18n.yaml b/apps/desktop/README.i18n.yaml
index e7fced6b8e..1c55529b1c 100644
--- a/apps/desktop/README.i18n.yaml
+++ b/apps/desktop/README.i18n.yaml
@@ -66,8 +66,8 @@
   en: 182a9c6705213e13
   zh: 681762f83490f4c6
 /deepseek-harness-desktop/updates/local-updater-qualification:
-  en: 68ec2f8bd5763ea6
-  zh: 23b932dfe8503602
+  en: db5e898140a73d53
+  zh: 80a9d58c74b4bb24
 /deepseek-harness-desktop/low-level-development-overrides:
   en: 8264b135871e8978
   zh: 0939aafb1b2961fc
diff --git a/apps/desktop/README.md b/apps/desktop/README.md
index f961a72a92..89755436cb 100644
--- a/apps/desktop/README.md
+++ b/apps/desktop/README.md
@@ -353,6 +353,8 @@ The command builds the Desktop shell and runs its coordinator with real Electron
 
 The downloaded bytes are inert, and the installation call is recorded rather than executed. The test substitutes browser opening and clipboard writing to avoid external navigation and clipboard changes. It does not boot the full product workspace, qualify a real installer or restart, verify publisher signatures, or exercise differential updates or macOS. Stalled policy requests, feed requests, and payload transfers exercise real deadlines and recovery. The actual ordinary dialog verifies isolated preload loading, card geometry, an unfiltered parent page, cancellation, task-warning choices, and explicit installation approval; account-row component tests provide separate evidence. The [local qualification decision](../../.agents/notes/implemented/testing/2026-09-10-desktop-local-updater-qualification.md) and [verification record](tests/README.md) preserve these limits; production release requirements remain unchanged.
 
+Native original-file operations accept only the trusted application frame. Completion returns the destination path to that frame; revealing it uses the existing Host path-opening API without a separate reveal IPC or saved-file history. Downloads use Chromium’s URL download and native save-dialog APIs; `DSH_DESKTOP_FILE_DOWNLOAD_TIMEOUT_MS` bounds startup until Chromium creates the download (300000 ms); the native save dialog has no application deadline. Clipboard-only remote image reads omit credentials, validate every redirect, reject the application Host and its loopback aliases, stop on main-frame navigation, and use `DSH_DESKTOP_IMAGE_READ_TIMEOUT_MS` (30000 ms) and `DSH_DESKTOP_IMAGE_READ_MAX_BYTES` (67108864 bytes). Image copying uses the renderer Clipboard API after PNG conversion. Other reachable HTTP(S) destinations follow deployment network isolation. [File actions](../../packages/client/ui-file-actions/README.md) defines saving and clipboard behavior.
+
 <a id="low-level-development-overrides"></a>
 
 ## Low-level development overrides
diff --git a/apps/desktop/README.zh.md b/apps/desktop/README.zh.md
index a7500d5d28..3df2783476 100644
--- a/apps/desktop/README.zh.md
+++ b/apps/desktop/README.zh.md
@@ -353,6 +353,8 @@ node apps/desktop/node_modules/pnpm/bin/pnpm.mjs --dir apps/desktop run test:upd
 
 下载内容是不可执行的测试字节，安装调用仅记录而不执行。测试替换浏览器打开与剪贴板写入，避免外部导航和剪贴板修改。它不启动完整产品工作区，不验证真实安装器或重启，不验证发布者签名，也不覆盖差分更新或 macOS。停滞的策略请求、清单请求和负载传输会执行真实截止时间及恢复。真实常规弹窗验证隔离预加载、卡片尺寸、未施加模糊的父页面、取消、任务警告选项与显式安装批准；账户行组件测试另行提供证据。[本地验证决策](../../.agents/notes/implemented/testing/2026-09-10-desktop-local-updater-qualification.zh.md)和[验证记录](tests/README.zh.md)保留这些限制；生产发布要求保持不变。
 
+原生原始文件操作仅接受可信应用页面。完成后向该页面返回目标路径；显示位置复用现有 Host 路径打开 API，不提供独立 reveal IPC，也不保留已保存文件历史。下载使用 Chromium URL 下载和原生保存对话框 API；`DSH_DESKTOP_FILE_DOWNLOAD_TIMEOUT_MS` 限定 Chromium 创建下载前的启动期限（300000 毫秒），不限制原生保存对话框的停留时间。仅剪贴板使用的远程图片读取不携带凭据，逐次校验重定向，拒绝应用 Host 及其回环别名，在主框架导航时终止，并使用 `DSH_DESKTOP_IMAGE_READ_TIMEOUT_MS`（30000 毫秒）与 `DSH_DESKTOP_IMAGE_READ_MAX_BYTES`（67108864 字节）。图片复制在转换为 PNG 后使用渲染进程的 Clipboard API。其他可达的 HTTP(S) 目标遵循部署侧网络隔离。[文件操作](../../packages/client/ui-file-actions/README.zh.md) 定义保存和剪贴板行为。
+
 <a id="low-level-development-overrides"></a>
 
 ## 底层开发覆盖项
diff --git a/apps/desktop/config/publishing/macos/production.json.example b/apps/desktop/config/publishing/macos/production.json.example
new file mode 100644
index 0000000000..cb7f67a0a4
--- /dev/null
+++ b/apps/desktop/config/publishing/macos/production.json.example
@@ -0,0 +1,13 @@
+{
+  "bucket": "replace-with-bucket-1250000000",
+  "origin": "https://download.deepseek.com",
+  "credentialsFile": "/absolute/path/to/packaging/secrets/cos-production.json",
+  "macOS": {
+    "signingIdentity": "REPLACE_WITH_DEVELOPER_ID_APPLICATION_IDENTITY",
+    "teamId": "XXXXXXXXXX"
+  },
+  "githubApp": {
+    "clientId": "REPLACE_WITH_GITHUB_APP_CLIENT_ID",
+    "privateKeyFile": "/absolute/path/to/packaging/publishing/keys/desktop-release-tagger.pem"
+  }
+}
diff --git a/apps/desktop/config/publishing/macos/test.json.example b/apps/desktop/config/publishing/macos/test.json.example
new file mode 100644
index 0000000000..6981a88c6b
--- /dev/null
+++ b/apps/desktop/config/publishing/macos/test.json.example
@@ -0,0 +1,9 @@
+{
+  "bucket": "replace-with-bucket-1250000000",
+  "origin": "https://download-test.example.com",
+  "credentialsFile": "/absolute/path/to/packaging/secrets/cos-test.json",
+  "macOS": {
+    "signingIdentity": "REPLACE_WITH_DEVELOPER_ID_APPLICATION_IDENTITY",
+    "teamId": "XXXXXXXXXX"
+  }
+}
diff --git a/apps/desktop/config/publishing/windows/production.json.example b/apps/desktop/config/publishing/windows/production.json.example
new file mode 100644
index 0000000000..9a2a743227
--- /dev/null
+++ b/apps/desktop/config/publishing/windows/production.json.example
@@ -0,0 +1,12 @@
+{
+  "bucket": "replace-with-bucket-1250000000",
+  "origin": "https://download.deepseek.com",
+  "credentialsFile": "C:/absolute/path/to/packaging/secrets/cos-production.json",
+  "windows": {
+    "certificateThumbprint": "0000000000000000000000000000000000000000"
+  },
+  "githubApp": {
+    "clientId": "REPLACE_WITH_GITHUB_APP_CLIENT_ID",
+    "privateKeyFile": "C:/absolute/path/to/packaging/publishing/keys/desktop-release-tagger.pem"
+  }
+}
diff --git a/apps/desktop/config/publishing/windows/test.json.example b/apps/desktop/config/publishing/windows/test.json.example
new file mode 100644
index 0000000000..cf3e1a40a1
--- /dev/null
+++ b/apps/desktop/config/publishing/windows/test.json.example
@@ -0,0 +1,8 @@
+{
+  "bucket": "replace-with-bucket-1250000000",
+  "origin": "https://download-test.example.com",
+  "credentialsFile": "C:/absolute/path/to/packaging/secrets/cos-test.json",
+  "windows": {
+    "certificateThumbprint": "0000000000000000000000000000000000000000"
+  }
+}
diff --git a/apps/desktop/package.json b/apps/desktop/package.json
index bf39dde903..40bdfefe27 100644
--- a/apps/desktop/package.json
+++ b/apps/desktop/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-desktop",
   "description": "Electron desktop shell for a bundled dsh runtime and external plugins",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "private": true,
   "license": "MIT",
   "author": {
@@ -88,6 +88,7 @@
     "@deepseek-ai/dsh-plugin-manager": "workspace:*",
     "zod": "4.4.3",
     "@deepseek-ai/dsh-util-file-drag": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-file-actions": "workspace:*",
     "tencentcloud-sdk-nodejs-teo": "4.1.330"
   }
 }
diff --git a/apps/desktop/packaging/README.i18n.yaml b/apps/desktop/packaging/README.i18n.yaml
index b98c3d075f..c39bb71bc3 100644
--- a/apps/desktop/packaging/README.i18n.yaml
+++ b/apps/desktop/packaging/README.i18n.yaml
@@ -24,11 +24,11 @@
   en: 5b4f0f80a117f202
   zh: ff05be196c181087
 /desktop-packaging/windows-actions-packaging:
-  en: 9dd2227f2878519e
-  zh: cd95dd6efd48298f
+  en: 253e17998951931c
+  zh: b582b377391d2ec2
 /desktop-packaging/macos-self-hosted-packaging:
-  en: ee628e830d849ae9
-  zh: 44313f5fb842f042
+  en: f4cc5209bdaeefba
+  zh: 1db959d1ed345fcc
 /desktop-packaging/unsigned-windows-test-installer:
   en: f429bc0c280e2dfa
   zh: 4adbcc9e906bdf80
diff --git a/apps/desktop/packaging/README.md b/apps/desktop/packaging/README.md
index 83a0e5a77b..28aa9ff9c7 100644
--- a/apps/desktop/packaging/README.md
+++ b/apps/desktop/packaging/README.md
@@ -115,11 +115,9 @@ Select the workflow in Actions, choose the source branch, preset, signing mode a
 
 Open the completed run in Actions and download its Artifacts. `windows-x64-signed-<version>-<run_id>-<run_attempt>` and `windows-x64-unsigned-<version>-<run_id>-<run_attempt>` contain the corresponding EXE; `windows-package-logs-<run_id>-<run_attempt>` contains packaging diagnostics. The upload steps are `Retain verified signed installer`, `Retain verified unsigned installer`, and `Retain packaging diagnostics`; their step durations and timestamped logs show upload time. These artifacts are not a Release or download-site publication.
 
-For path-sensitive Windows build measurements, `build_root` optionally selects an absolute directory outside existing Git checkouts. Each run clones the validated source commit into a new `windows-package-<run-id>-<attempt>/source` directory; ignored files and previous build outputs are not copied. Only the packaging process uses a sibling run-owned `temp` directory through `TEMP` and `TMP`; Actions steps and post-job hooks retain their original temporary directories. Dependency and signing caches retain their existing locations. Successful runs remove only their owned checkout after artifact uploads, retrying transient filesystem failures up to three times with 100 ms increasing delays; persistent cleanup errors fail the Job and may leave a partially removed directory. Failed builds retain their checkout for inspection. Leave the input empty to build in the original Actions checkout. Include checkout creation and cleanup in the complete Job timing.
-
 For cache measurements, `cache_namespace` selects a retained subdirectory for both dependency stores and upstream downloads; leave it empty for normal shared caches. Use a new name for a cold sample and repeat that name for warm samples. Names contain 1–64 lowercase letters, digits or hyphens, start with a letter or digit, and cannot be Windows device names. This does not reset the separate signature cache or OS file cache; report those states and Job start-to-completion time alongside phase timings and artifact size. Before dependency installation, the workflow records the Node version, available CPU parallelism, logical CPU count, and total/free memory.
 
-The dependency-install and packaging steps normalize their own shell to normal CPU, I/O and memory priority before launching children. Priority and isolated-workspace helpers are copied from the exact workflow commit into a run-specific temporary directory, independently of the selected product source. Missing helpers stop CI setup; unavailable priority adjustment emits a warning and marks scheduling unsuitable for performance comparison, but does not stop packaging. This does not modify the runner task or other processes. Version, preset and retained-artifact adapters remain tied to product source and its formats.
+The dependency-install and packaging steps normalize their own shell to normal CPU, I/O and memory priority before launching children. The priority helper is copied from the exact workflow commit into a run-specific temporary directory, independently of the selected product source. A missing helper stops CI setup; unavailable priority adjustment emits a warning and marks scheduling unsuitable for performance comparison, but does not stop packaging. This does not modify the runner task or other processes. Version, preset and retained-artifact adapters remain tied to product source and its formats.
 
 Installer uploads store the already-compressed release files without ZIP recompression; this preserves installer bytes and signatures. Diagnostic uploads retain their ordinary compression.
 
@@ -129,13 +127,12 @@ Installer uploads store the already-compressed release files without ZIP recompr
 
 The [Apple Silicon workflow](../../../.github/workflows/macos-package.yml) and [Intel workflow](../../../.github/workflows/macos-intel-package.yml) produce separate arm64 and x64 packages on the Apple Silicon runner labeled `dsh-mac-package-trial`. Both share one concurrency group. The Intel workflow checks Rosetta execution before dependency installation; its selected source must include the target-aware macOS CI adapter. Both select `test` or `production` and use the existing signing, notarization and packaged-runtime checks. Successful DMG/ZIP files and diagnostic logs are retained for 14 days without publishing a release. Installer uploads disable redundant ZIP compression. The operator must verify a complete Actions run and installation on the target architecture before release qualification. The `compression_level` dropdown defaults to `3` and also offers `7`; it overrides the machine preset for this run and affects only ZIP and automatic-update downloads, not DMG.
 
-All three platform forms put source, environment, update channel, version mode, manual version, test release ID and compression level first, with matching defaults. macOS notarization and Windows signing, cache measurement and isolated-workspace options follow these common fields.
+All three platform forms put source, environment, update channel, version mode, manual version, test release ID and compression level first, with matching defaults. macOS notarization and Windows signing and cache measurement options follow these common fields.
 
 Run `node apps/desktop/scripts/setup-macos-packaging.mjs "$HOME/dsh-ci"` to prepare private `runner/`, `packaging/{presets,secrets,certificates}` and `cache/macos-signatures` directories without overwriting existing files; append `--check` to inspect them. Fill the [preset](../config/macos-packaging/test.env.example) and [signing](../config/macos-packaging/macos-signing.env.example) templates outside the checkout. Set secret and certificate files to mode `0600`. `DSH_PACKAGING_CONFIG_DIR` selects the absolute `packaging` directory and `DSH_PACKAGING_PRESET` selects its preset; missing files fail without falling back to `.env.macos`. Signed and preparation-only Mac builds read `secrets/macos-signing.env`; relative credential paths resolve beside that file. Public presets reject signing credentials, and signing files cannot override public settings. Local unsigned Mac builds retain their configuration-free behavior.
 
 Run `bash apps/desktop/scripts/start-macos-packaging-runner.sh "$HOME/dsh-ci/runner" "$HOME/dsh-ci/packaging" <absolute-node-24-bin-directory> --check` to check the host tools and configuration files. The script selects the active Xcode and its macOS SDK together and compiles a small linker probe. After registration, omit `--check` to run in the foreground with a cleared inherited environment and prevent idle sleep while the runner is alive. Stop it with Ctrl-C before installing the service below. The runner owns its `_work` checkout, separate from daily development. The account can read its signing files, so run only trusted code. The existing notarization proxy restoration rules apply; after forced termination, inspect retained recovery records before another build. New setup templates set `DSH_DESKTOP_MACOS_SIGNATURE_CACHE_DIR` to the absolute `cache/macos-signatures` directory outside checkout. For existing installations, rerun setup and add that field to each preset; existing files are preserved. This retains signatures across clean checkouts; cache verification and limits are described under [macOS signing](#macos-release-signing).
 
-
 ZIP compression uses the same configured level with or without notarization; the App is assembled once, then DMG and ZIP are built separately so the ZIP setting does not change DMG compression. The `skip_notarization` workflow option defaults to `false`; the equivalent CLI flag is `--skip-notarization`. It retains Developer ID signing, DMG signature verification and packaged-runtime verification, but omits Apple notarization and stapling and does not require Apple notarization credentials. DMG/ZIP filenames carry `-unnotarized`, are stored under `.desktop-build/targets/<target>/unnotarized-artifacts/`, and are uploaded with an `unnotarized-debug` label. These artifacts are for internal debugging only: Gatekeeper may block downloaded copies, and they are not qualified for distribution or update publishing. No release completion record is written. The flag rejects unsigned, Windows and preparation-only builds.
 
 Install the user service from the checkout as the same account that registered the runner, without `sudo`:
diff --git a/apps/desktop/packaging/README.zh.md b/apps/desktop/packaging/README.zh.md
index 3868508c9e..2e87933826 100644
--- a/apps/desktop/packaging/README.zh.md
+++ b/apps/desktop/packaging/README.zh.md
@@ -115,11 +115,9 @@ runner 的受监督启动和恢复见 [Windows runner 机器准备](../windows-s
 
 在 Actions 打开完成的运行并下载 Artifacts。`windows-x64-signed-<version>-<run_id>-<run_attempt>` 与 `windows-x64-unsigned-<version>-<run_id>-<run_attempt>` 包含对应 EXE；`windows-package-logs-<run_id>-<run_attempt>` 包含打包诊断。上传步骤名为 `Retain verified signed installer`、`Retain verified unsigned installer` 和 `Retain packaging diagnostics`；步骤耗时与带时间戳的日志显示上传用时。这些产物不等于发布 Release 或下载站内容。
 
-测量 Windows 构建路径对性能的影响时，可用 `build_root` 指定现有 Git checkout 之外的绝对目录。每轮任务将已验证的源码提交克隆到新的 `windows-package-<run-id>-<attempt>/source` 目录；不会复制忽略文件或此前的构建输出。仅打包进程通过 `TEMP` 和 `TMP` 使用同轮所属的同级 `temp` 目录；Actions 步骤及 Job 后置钩子保留原临时目录。依赖缓存和签名缓存沿用原有位置。成功任务在产物上传后仅删除本轮所属的 checkout，临时文件系统错误最多重试三次，等待时间按 100 ms 递增；持续清理失败会使 Job 失败，并可能留下部分删除的目录。构建失败时保留 checkout 供检查。输入留空时使用原 Actions checkout。完整 Job 耗时须包含 checkout 创建和清理。
-
 测量缓存时，`cache_namespace` 为两个依赖 store 和上游下载选择保留的子目录；留空使用正常共享缓存。新名称用于冷缓存采样，再次使用同名用于热缓存采样。名称由 1–64 个小写字母、数字或连字符组成，以字母或数字开头，且不能为 Windows 设备名。这不会重置独立的签名缓存或操作系统文件缓存；应将其状态、Job 开始至完成的总耗时与阶段耗时和产物体积一并报告。workflow 在依赖安装前记录 Node 版本、可用 CPU 并行数、逻辑 CPU 数及总内存和空闲内存。
 
-依赖安装和打包步骤在启动子进程前，将自身 shell 的 CPU、I/O 和内存优先级调整为普通值。优先级及独立构建目录辅助脚本从 workflow 的精确提交复制到本轮临时目录，与选中的产品源码分离。缺失辅助脚本会终止 CI 准备；无法调整优先级时明确告警并标记调度条件不适合性能对比，但继续打包。这不会修改 runner 任务或其他进程。版本、preset 和产物留存适配器仍跟随产品源码及其格式。
+依赖安装和打包步骤在启动子进程前，将自身 shell 的 CPU、I/O 和内存优先级调整为普通值。优先级辅助脚本从 workflow 的精确提交复制到本轮临时目录，与选中的产品源码分离。缺失辅助脚本会终止 CI 准备；无法调整优先级时明确告警并标记调度条件不适合性能对比，但继续打包。这不会修改 runner 任务或其他进程。版本、preset 和产物留存适配器仍跟随产品源码及其格式。
 
 安装器上传直接存储已经压缩的发布文件，不再进行 ZIP 二次压缩；安装器字节和签名保持不变。诊断日志上传保留通常的压缩方式。
 
@@ -129,13 +127,12 @@ runner 的受监督启动和恢复见 [Windows runner 机器准备](../windows-s
 
 [Apple Silicon 工作流](../../../.github/workflows/macos-package.yml)与 [Intel 工作流](../../../.github/workflows/macos-intel-package.yml)在带有 `dsh-mac-package-trial` 标签的 Apple Silicon runner 上分别生成 arm64 和 x64 安装包，两者共用一个并发组。Intel 工作流在安装依赖前检查 Rosetta 能否执行；所选源码必须包含按目标架构校验的 macOS CI 适配脚本。两者均选择 `test` 或 `production`，并复用现有签名、公证和打包运行时检查。成功的 DMG／ZIP 与诊断日志保留 14 天，不发布 release；安装包上传关闭重复 ZIP 压缩。操作人员须验收完整 Actions 运行及目标架构上的安装，才能确认可交付。`compression_level` 下拉选项默认为 `3`，也可选择 `7`；本次运行以该选项覆盖机器预设，只影响 ZIP 和自动升级下载，不影响 DMG。
 
-三个平台的表单均依次展示源码、环境、升级通道、版本模式、手动版本号、测试 release ID 和压缩等级，默认值一致。macOS 公证选项和 Windows 签名、缓存测量、独立构建目录选项位于公共字段之后。
+三个平台的表单均依次展示源码、环境、升级通道、版本模式、手动版本号、测试 release ID 和压缩等级，默认值一致。macOS 公证选项和 Windows 签名、缓存测量选项位于公共字段之后。
 
 运行 `node apps/desktop/scripts/setup-macos-packaging.mjs "$HOME/dsh-ci"` 创建私有 `runner/`、`packaging/{presets,secrets,certificates}` 和 `cache/macos-signatures` 目录，不覆盖已有文件；追加 `--check` 仅检查。在 checkout 外填写 [preset](../config/macos-packaging/test.env.example) 和[签名](../config/macos-packaging/macos-signing.env.example)模板，将秘密和证书文件权限设为 `0600`。`DSH_PACKAGING_CONFIG_DIR` 指定 `packaging` 的绝对目录，`DSH_PACKAGING_PRESET` 选择其中的 preset；缺少文件立即失败，不回退到 `.env.macos`。Mac 签名和仅准备构建读取 `secrets/macos-signing.env`，相对凭据路径以该文件所在目录为基准。公开 preset 拒绝签名凭据，签名文件不能覆盖公开配置。本地未签名 Mac 构建保留无需配置的行为。
 
 运行 `bash apps/desktop/scripts/start-macos-packaging-runner.sh "$HOME/dsh-ci/runner" "$HOME/dsh-ci/packaging" <absolute-node-24-bin-directory> --check` 检查宿主工具和配置文件。脚本同时选择当前 Xcode 及其 macOS SDK，并编译小型链接探针。注册后省略 `--check`，清理继承环境并在前台启动 runner，存活期间阻止空闲睡眠。安装下方服务前，先用 Ctrl-C 停止。runner 拥有 `_work` 下的源码目录，与日常开发分开。该账户可读取签名文件，因此只执行可信代码。沿用现有公证代理恢复规则；强制终止后，先检查保留的恢复记录再构建。新建模板将 `DSH_DESKTOP_MACOS_SIGNATURE_CACHE_DIR` 设为 checkout 外 `cache/macos-signatures` 的绝对路径。已有部署重新运行 setup 后，在各 preset 中补上该字段；已有文件保持不变。这样可跨干净检出保留签名；缓存验证和容量限制见 [macOS 签名](#macos-release-signing)。
 
-
 无论是否公证，ZIP 都使用同一压缩配置；App 只组装一次，再分别生成 DMG 和 ZIP，确保 ZIP 设置不改变 DMG 压缩。工作流选项 `skip_notarization` 默认为 `false`；对应 CLI 参数是 `--skip-notarization`。该模式保留 Developer ID 签名、DMG 签名验证和打包运行时验证，跳过 Apple 公证和 stapling，不要求 Apple 公证凭据。DMG／ZIP 文件名带 `-unnotarized`，存放于 `.desktop-build/targets/<target>/unnotarized-artifacts/`，上传产物标为 `unnotarized-debug`。这些产物仅供内部调试：Gatekeeper 可能阻止下载副本运行，不能视为可分发包或用于更新发布。该模式不写入发布完成记录，不能与未签名、Windows 或仅准备构建组合。
 
 在 checkout 中，以注册 runner 的同一账户安装用户服务，不使用 `sudo`：
diff --git a/apps/desktop/publishing/ci/README.i18n.yaml b/apps/desktop/publishing/ci/README.i18n.yaml
index d6940d4d14..14ef478ed7 100644
--- a/apps/desktop/publishing/ci/README.i18n.yaml
+++ b/apps/desktop/publishing/ci/README.i18n.yaml
@@ -21,14 +21,14 @@
   en: 0478d8e35f9a3d55
   zh: 0aa3fd828bc02691
 /desktop-ci-publication/machine-setup:
-  en: 6e7b928af17f4377
-  zh: 7c559078306df3fd
+  en: 0f43f2e193e95043
+  zh: 1c1efb062c06f7b8
 /desktop-ci-publication/package-and-publish:
   en: f7c12d343891e547
   zh: da596ee1366c2046
 /desktop-ci-publication/recovery-and-records:
-  en: 2e1e6b16d0d6bd41
-  zh: 6ff4ad5a8f1f57b4
+  en: b62a7484929f9941
+  zh: c9dd06c77098e6ef
 /desktop-ci-publication/restore-a-channel:
   en: d82e2ccf70cce397
   zh: d93dcb77cc4b463e
diff --git a/apps/desktop/publishing/ci/README.md b/apps/desktop/publishing/ci/README.md
index 02f1e1b6af..5009bf87e7 100644
--- a/apps/desktop/publishing/ci/README.md
+++ b/apps/desktop/publishing/ci/README.md
@@ -54,7 +54,9 @@ For a queued job, compare the job page's requested labels with **Settings → Ac
 
 Keep `DSH_PACKAGING_CONFIG_DIR` pointed at the existing machine packaging directory. Completed attempts are copied to its sibling `releases/<run-id>/<attempt>/`; `DSH_DESKTOP_RELEASES_DIR` overrides that root with an absolute path. The inventory includes installers, update archives, blockmaps, completion metadata and a credential-free manifest. Debug packages are retained but cannot publish. Copies are checked before the attempt directory becomes visible, and an existing attempt cannot be replaced. GitHub retains the same file inventory for 14 days. Local files remain until an operator removes them; do not delete an attempt while it is being verified or published.
 
-Create `publishing/test.json` and, when authorized, `publishing/production.json` below the configuration directory. Each declares `bucket`, HTTPS `origin` without a path, and an absolute `credentialsFile`. The credential file contains only `secretId` and `secretKey`. macOS also requires `macOS.signingIdentity` and `macOS.teamId`; Windows requires `windows.certificateThumbprint`. Production requires the exact origin `https://download.deepseek.com` and `githubApp.clientId` plus an absolute `githubApp.privateKeyFile`. These files stay outside Git. The uploader supports permanent COS credentials, not STS session credentials. Administrators must keep test and production buckets unversioned (neither enabled nor suspended). Publication assumes this deployment prerequisite and does not call `GetBucketVersioning` or require its permission. Immutable binary PUTs retain `x-cos-forbid-overwrite`; their protection depends on administrators maintaining the bucket configuration.
+Start from the [macOS test](../../config/publishing/macos/test.json.example), [macOS production](../../config/publishing/macos/production.json.example), [Windows test](../../config/publishing/windows/test.json.example), or [Windows production](../../config/publishing/windows/production.json.example) template. Create the `publishing/` directory and copy the selected file to `publishing/<preset>.json` below `DSH_PACKAGING_CONFIG_DIR`. Replace the example bucket, test origin, absolute paths, macOS signing identity and team ID or Windows certificate thumbprint, and production App client ID with the machine settings; keep the fixed production origin. Templates contain no credentials and do not grant COS, GitHub, or signing permissions. Store referenced secrets outside Git with access restricted to the publishing account. macOS uses the same configuration for arm64 and x64; the retained package determines the target.
+
+Each configuration declares `bucket`, HTTPS `origin` without a path, and an absolute `credentialsFile`. The credential file contains only `secretId` and `secretKey`. macOS also requires `macOS.signingIdentity` and `macOS.teamId`; Windows requires `windows.certificateThumbprint`. Production requires the exact origin `https://download.deepseek.com` and `githubApp.clientId` plus an absolute `githubApp.privateKeyFile`. The uploader supports permanent COS credentials, not STS session credentials. Administrators must keep test and production buckets unversioned (neither enabled nor suspended). Publication assumes this deployment prerequisite and does not call `GetBucketVersioning` or require its permission. Immutable binary PUTs retain `x-cos-forbid-overwrite`; their protection depends on administrators maintaining the bucket configuration.
 
 Set the repository variable `DESKTOP_PUBLISH_RUNNERS` to a JSON mapping of registered runner names to unique labels and targets, for example `{"mini":{"label":"dsh-mini-publish","target":["mac-arm64","mac-x64"]}}`. Assign that label to exactly that runner. A target may be a single name or a nonempty list; the Mac entry above authorizes both packaging workflows on the same machine. Windows uses target `win-x64`. The retained target must match the selected packaging workflow. The routing job checks the original successful job, and the publisher checks its own runner name against the recorded name. Machines need no shared filesystem or LAN connection to each other.
 
@@ -82,7 +84,7 @@ After resolving a failure, re-run the failed publishing job to keep its prepared
 
 The sibling `upload-records/` directory retains an operation identity, newline-delimited events and terminal result. Feed-write intents retain both previous and requested YAML. Failures record their stage, safe error classification and diagnostic; COS failures also identify `GetObject` or `PutObject`, plus a validated HTTP status and request ID when available. Access-denied reports name the permission to inspect. Raw provider responses and credentials are excluded. Audit initialization becomes visible only after its files are complete; abandoned `.initializing-*` directories are not scanned for completed publication. Writes and readback are recorded before proceeding; missing terminal results mean interruption, not success. Actions also keeps its operation record as a diagnostic artifact for 30 days. These local records are not tamper-proof. COS readback verifies storage bytes, not public CDN behavior; public download acceptance is separate.
 
-If the feed completed but tagging failed, the result is `published-tag-pending` and the job fails visibly. On retry, durable feed-completion evidence permits only tag recovery, even if a later release has advanced the channel. It never re-publishes old YAML. An existing conflicting tag requires administrator investigation and is never moved automatically.
+If the feed completed but tagging failed, the result is `published-tag-pending` and the job fails visibly. On retry, durable feed-completion evidence permits only tag recovery, even if a later release has advanced the channel. It never re-publishes old YAML. An existing conflicting tag requires administrator investigation and is never moved automatically. A rejected tag creation retains its HTTP status and validated GitHub request ID; a follow-up lookup does not replace that failure with a missing-tag error. A repository-rule rejection directs the operator to the matching rulesets without logging the raw response.
 
 Normal publication and manual restoration acquire the same local channel lock. A crash can leave a lock directory under the sibling `publish-locks/`; verify no writer is running before manually removing it. A runner label alone does not coordinate writers on other machines. Keep one publishing machine per channel and preserve its records when migrating.
 
diff --git a/apps/desktop/publishing/ci/README.zh.md b/apps/desktop/publishing/ci/README.zh.md
index 3a635b5116..151032eed9 100644
--- a/apps/desktop/publishing/ci/README.zh.md
+++ b/apps/desktop/publishing/ci/README.zh.md
@@ -54,7 +54,9 @@ job 排队时，先对照 job 页面请求的标签与 **Settings → Actions 
 
 保持 `DSH_PACKAGING_CONFIG_DIR` 指向现有机器打包目录。完成的构建复制到其同级 `releases/<run-id>/<attempt>/`；`DSH_DESKTOP_RELEASES_DIR` 可用绝对路径覆盖该根目录。文件清单包含安装包、更新归档、blockmap、完成记录和不含凭据的 manifest。调试包会留存，但不能发布。复制内容通过校验后才开放 attempt 目录，已有 attempt 不能被替换。GitHub 保留相同文件清单 14 天。本地文件保留到操作员删除；校验或发布期间不要删除对应 attempt。
 
-在配置目录下创建 `publishing/test.json`，获得授权后再创建 `publishing/production.json`。每份配置声明 `bucket`、不带路径的 HTTPS `origin` 和绝对路径 `credentialsFile`。凭据文件只包含 `secretId` 和 `secretKey`。macOS 还需 `macOS.signingIdentity` 和 `macOS.teamId`；Windows 需要 `windows.certificateThumbprint`。production 必须使用 origin `https://download.deepseek.com`，并提供 `githubApp.clientId` 和绝对路径 `githubApp.privateKeyFile`。这些文件不进入 Git。上传器支持长期 COS 凭据，不支持 STS 会话凭据。管理员必须维持 test 和 production bucket 未启用版本控制（不能是已启用或已暂停状态）。发布流程以此为部署前提，不调用 `GetBucketVersioning`，也不要求该权限。二进制 PUT 仍携带 `x-cos-forbid-overwrite`；防覆盖保证依赖管理员维持桶配置。
+从 [macOS test](../../config/publishing/macos/test.json.example)、[macOS production](../../config/publishing/macos/production.json.example)、[Windows test](../../config/publishing/windows/test.json.example) 或 [Windows production](../../config/publishing/windows/production.json.example) 模板开始，创建 `publishing/` 目录，将所选文件复制到 `DSH_PACKAGING_CONFIG_DIR` 下的 `publishing/<preset>.json`。用机器实际配置替换示例 bucket、test origin、绝对路径、macOS 签名身份和 Team ID 或 Windows 证书指纹，以及 production App client ID；保留固定的 production origin。模板不含凭据，也不授予 COS、GitHub 或签名权限。引用的秘密文件保存在 Git 之外，只允许发布账户访问。macOS 的 arm64 和 x64 共用配置，目标由留存包决定。
+
+每份配置声明 `bucket`、不带路径的 HTTPS `origin` 和绝对路径 `credentialsFile`。凭据文件只包含 `secretId` 和 `secretKey`。macOS 还需 `macOS.signingIdentity` 和 `macOS.teamId`；Windows 需要 `windows.certificateThumbprint`。production 必须使用 origin `https://download.deepseek.com`，并提供 `githubApp.clientId` 和绝对路径 `githubApp.privateKeyFile`。上传器支持长期 COS 凭据，不支持 STS 会话凭据。管理员必须维持 test 和 production bucket 未启用版本控制（不能是已启用或已暂停状态）。发布流程以此为部署前提，不调用 `GetBucketVersioning`，也不要求该权限。二进制 PUT 仍携带 `x-cos-forbid-overwrite`；防覆盖保证依赖管理员维持桶配置。
 
 将仓库变量 `DESKTOP_PUBLISH_RUNNERS` 配置为已注册 runner 名称到唯一标签和目标的 JSON 映射，例如 `{"mini":{"label":"dsh-mini-publish","target":["mac-arm64","mac-x64"]}}`。该标签只能分配给这台 runner。目标可为单个名称或非空列表；上述 Mac 条目允许同一台机器处理两种架构的打包工作流。Windows 使用目标 `win-x64`。留存包的目标必须与所选打包工作流一致。路由 job 检查原构建成功的 job，发布器再检查自身 runner 名称与记录一致。机器之间不需要共享文件系统或局域网连接。
 
@@ -82,7 +84,7 @@ Environment 审批限制此工作流，不限制同一机器账户运行的任
 
 同级 `upload-records/` 目录保留操作标识、逐行事件和最终结果。频道写入意图同时记录先前和目标 YAML。失败记录阶段、安全错误分类与诊断；COS 失败还标明 `GetObject` 或 `PutObject`，并在可用时记录经过校验的 HTTP 状态码和 request ID。访问拒绝提示会指出需检查的权限。不保存原始服务响应或凭据。审计初始化在文件完整后才可见；遗留的 `.initializing-*` 目录不参与已完成发布的扫描。写入和回读在继续操作前落盘；没有最终结果代表中断，不代表成功。Actions 还将操作记录保存为诊断 artifact，保留 30 天。这些本地记录不防篡改。COS 回读验证存储字节，不代表公开 CDN 行为；公开下载需单独验收。
 
-频道更新完成但 tag 失败时，结果为 `published-tag-pending`，job 明确失败。重试时，已落盘的频道完成证据只允许恢复 tag，即使后来发布已推进频道，也不会重新发布旧 YAML。已有冲突 tag 需要管理员调查，不会自动移动。
+频道更新完成但 tag 失败时，结果为 `published-tag-pending`，job 明确失败。重试时，已落盘的频道完成证据只允许恢复 tag，即使后来发布已推进频道，也不会重新发布旧 YAML。已有冲突 tag 需要管理员调查，不会自动移动。tag 创建被拒绝时保留其 HTTP 状态及经过校验的 GitHub request ID，后续查询不会用 tag 不存在的错误替换创建失败。仓库规则拒绝会提示操作人员检查匹配的 ruleset，不记录原始响应。
 
 正常发布和手动恢复获取同一把本地频道锁。崩溃可能在同级 `publish-locks/` 下留下锁目录；手动删除前确认没有写入任务运行。runner 标签本身不能协调其他机器的写入。每个频道保持单一发布机器，迁移时保留记录。
 
diff --git a/apps/desktop/scripts/desktop-publish-tag.ts b/apps/desktop/scripts/desktop-publish-tag.ts
index f47cc698a6..de60c03e84 100644
--- a/apps/desktop/scripts/desktop-publish-tag.ts
+++ b/apps/desktop/scripts/desktop-publish-tag.ts
@@ -40,8 +40,32 @@ export async function publishDesktopTag(
     body: JSON.stringify({ ref: `refs/tags/${tag}`, sha: commit }), redirect: 'error', signal: AbortSignal.timeout(30_000),
   })
   if (response.status === 201) { await matches(response); return 'created' }
-  // A parallel platform release may have created the same version tag after our first read.
-  if (response.status === 422) { await response.body?.cancel(); await matches(await get()); return 'present' }
+  const requestId = response.headers.get('x-github-request-id')
+  const identity = requestId !== null && /^[A-Fa-f0-9:]{1,128}$/u.test(requestId) ? `; GitHub request ${requestId}` : ''
+  const failure = `desktop tag: creation failed (HTTP ${response.status}${identity})`
+  // A 422 can reject repository rules as well as report a concurrent tag creation.
+  if (response.status === 422) {
+    let detail: unknown
+    try { detail = await response.json() } catch (error) {
+      // Non-JSON error responses still retain the original HTTP status and request ID.
+    }
+    const rulesRejected = typeof detail === 'object' && detail !== null && 'message' in detail
+      && typeof detail.message === 'string' && detail.message.startsWith('Repository rule violations found')
+    const guidance = rulesRejected ? 'repository rules rejected tag creation; inspect the matching tag rulesets'
+      : 'inspect repository rule insights and App permissions before retrying'
+    let reconciled: Response
+    try { reconciled = await get() } catch (cause) {
+      throw new Error(`${failure}; follow-up tag lookup failed; ${guidance}`, { cause })
+    }
+    if (!reconciled.ok) {
+      await reconciled.body?.cancel()
+      throw new Error(`${failure}; follow-up tag lookup returned HTTP ${reconciled.status}; ${guidance}`)
+    }
+    try { await matches(reconciled) } catch (cause) {
+      throw new Error(`${failure}; follow-up tag verification failed; inspect the existing tag before retrying`, { cause })
+    }
+    return 'present'
+  }
   await response.body?.cancel()
-  throw new Error(`desktop tag: creation failed (HTTP ${response.status}); reconcile the tag before retrying`)
+  throw new Error(`${failure}; reconcile the tag before retrying`)
 }
diff --git a/apps/desktop/scripts/windows-build-workspace.d.mts b/apps/desktop/scripts/windows-build-workspace.d.mts
deleted file mode 100644
index 92f3a3c704..0000000000
--- a/apps/desktop/scripts/windows-build-workspace.d.mts
+++ /dev/null
@@ -1,19 +0,0 @@
-/** Identity of a Windows packaging run and its independent build root. */
-export interface WindowsBuildWorkspaceOptions {
-  sourceDirectory: string
-  buildRoot: string
-  runId: string
-  runAttempt: string
-  sourceSha: string
-}
-/**
- * Clone the clean selected commit into a new run-owned directory.
- * @param options - Original checkout and Actions run identity.
- * @returns Checkout and temporary directory owned by this run.
- */
-export function prepareWindowsBuildWorkspace(options: WindowsBuildWorkspaceOptions): { directory: string; temporaryDirectory: string }
-/**
- * Remove the directory only when its ownership record matches the run.
- * @param options - Original checkout and Actions run identity.
- */
-export function removeWindowsBuildWorkspace(options: WindowsBuildWorkspaceOptions): void
diff --git a/apps/desktop/scripts/windows-build-workspace.mjs b/apps/desktop/scripts/windows-build-workspace.mjs
deleted file mode 100644
index 977dda6618..0000000000
--- a/apps/desktop/scripts/windows-build-workspace.mjs
+++ /dev/null
@@ -1,96 +0,0 @@
-/** Create and remove a run-owned checkout for Windows packaging. */
-import { execFileSync } from 'node:child_process'
-import { appendFileSync, existsSync, lstatSync, mkdirSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
-import { dirname, isAbsolute, join, parse, resolve } from 'node:path'
-import { pathToFileURL } from 'node:url'
-
-function assertUnlinkedAncestors(directory) {
-  for (let current = directory; ; current = dirname(current)) {
-    if (existsSync(current) && lstatSync(current).isSymbolicLink()) {
-      throw new Error('Packaging workspace ancestors must not be links')
-    }
-    if (dirname(current) === current) break
-  }
-}
-
-function locations(options) {
-  const { buildRoot, runId, runAttempt, sourceSha } = options
-  if (!buildRoot || !isAbsolute(buildRoot) || /[\r\n\0]/.test(buildRoot)) {
-    throw new Error('Packaging build root must be a nonempty absolute directory')
-  }
-  const root = resolve(buildRoot)
-  if (root === parse(root).root) throw new Error('Packaging build root must not be a volume root')
-  if (!/^[1-9]\d*$/.test(runId) || !/^[1-9]\d*$/.test(runAttempt) || !/^[a-f0-9]{40}$/.test(sourceSha)) {
-    throw new Error('Packaging workspace requires a run identity and exact commit')
-  }
-  assertUnlinkedAncestors(root)
-  for (let current = root; ; current = dirname(current)) {
-    if (existsSync(join(current, '.git'))) throw new Error('Packaging build root must be outside existing Git checkouts')
-    if (dirname(current) === current) break
-  }
-  const owner = join(root, `windows-package-${runId}-${runAttempt}`)
-  assertUnlinkedAncestors(owner)
-  return { root, owner, directory: join(owner, 'source'), temporaryDirectory: join(owner, 'temp') }
-}
-
-function git(directory, args) {
-  return execFileSync('git', args, { cwd: directory, encoding: 'utf8', stdio: ['ignore', 'pipe', 'pipe'] }).trim()
-}
-
-function ownership(options, paths) {
-  return JSON.stringify({ version: 1, root: paths.root, source: resolve(options.sourceDirectory), runId: options.runId, runAttempt: options.runAttempt, sourceSha: options.sourceSha })
-}
-
-/**
- * Clone the validated commit into a new run-owned checkout; failures retain diagnostics.
- * @param {{sourceDirectory: string, buildRoot: string, runId: string, runAttempt: string, sourceSha: string}} options - Source and run identity.
- * @returns {{directory: string, temporaryDirectory: string}} Checkout and temporary directory owned by this run.
- */
-export function prepareWindowsBuildWorkspace(options) {
-  const paths = locations(options)
-  if (git(options.sourceDirectory, ['rev-parse', 'HEAD']) !== options.sourceSha || git(options.sourceDirectory, ['status', '--porcelain'])) {
-    throw new Error('Packaging source must be clean and match the selected commit')
-  }
-  mkdirSync(paths.root, { recursive: true })
-  mkdirSync(paths.owner)
-  writeFileSync(join(paths.owner, 'owner.json'), ownership(options, paths), { flag: 'wx' })
-  mkdirSync(paths.temporaryDirectory)
-  git(paths.owner, ['clone', '--no-hardlinks', '--no-checkout', resolve(options.sourceDirectory), paths.directory])
-  git(paths.directory, ['checkout', '--detach', options.sourceSha])
-  if (git(paths.directory, ['rev-parse', 'HEAD']) !== options.sourceSha || git(paths.directory, ['status', '--porcelain'])) {
-    throw new Error('Isolated packaging checkout does not match the selected commit')
-  }
-  return { directory: paths.directory, temporaryDirectory: paths.temporaryDirectory }
-}
-
-/**
- * Remove only the matching run-owned directory after successful artifact upload.
- * Transient filesystem failures retry up to three times; persistent failures propagate.
- * @param {{sourceDirectory: string, buildRoot: string, runId: string, runAttempt: string, sourceSha: string}} options - Original source and run identity.
- * @returns {void}
- */
-export function removeWindowsBuildWorkspace(options) {
-  const paths = locations(options)
-  const marker = join(paths.owner, 'owner.json')
-  const stat = lstatSync(marker)
-  if (!stat.isFile() || stat.isSymbolicLink() || stat.size > 8192 || readFileSync(marker, 'utf8') !== ownership(options, paths)) {
-    throw new Error('Packaging workspace ownership does not match this run')
-  }
-  rmSync(paths.owner, { recursive: true, maxRetries: 3, retryDelay: 100 })
-}
-
-if (process.argv[1] && import.meta.url === pathToFileURL(resolve(process.argv[1])).href) {
-  const options = {
-    sourceDirectory: process.env.GITHUB_WORKSPACE ?? '',
-    buildRoot: process.env.PACKAGE_BUILD_ROOT ?? '',
-    runId: process.env.GITHUB_RUN_ID ?? '',
-    runAttempt: process.env.GITHUB_RUN_ATTEMPT ?? '',
-    sourceSha: process.env.PACKAGE_SOURCE_SHA ?? '',
-  }
-  if (process.argv[2] === '--remove') removeWindowsBuildWorkspace(options)
-  else {
-    if (process.argv.length !== 2 || !process.env.GITHUB_OUTPUT) throw new Error('Expected Actions output file and no arguments')
-    const result = prepareWindowsBuildWorkspace(options)
-    appendFileSync(process.env.GITHUB_OUTPUT, `directory=${result.directory}\ntemporaryDirectory=${result.temporaryDirectory}\n`)
-  }
-}
diff --git a/apps/desktop/src/file-actions.ts b/apps/desktop/src/file-actions.ts
new file mode 100644
index 0000000000..45c4a25fc1
--- /dev/null
+++ b/apps/desktop/src/file-actions.ts
@@ -0,0 +1,192 @@
+/** Trusted-window Chromium downloads and clipboard fallback reads. */
+import { app, ipcMain, session } from 'electron'
+import type { BrowserWindow, IpcMainInvokeEvent } from 'electron'
+import { closeSync, openSync, rmSync } from 'node:fs'
+import { extname, join } from 'node:path'
+import { resolveDragFileName } from '@deepseek-ai/dsh-util-file-drag'
+import { randomUUID } from 'node:crypto'
+import type { FileSaveResult } from '@deepseek-ai/dsh-client-ui-file-actions/types'
+import { DESKTOP_IPC } from './ipc.ts'
+import { resolveDurationMs } from './duration-env.ts'
+
+/** @param value - untrusted IPC input. @returns captured URL and destination policy. */
+function saveRequest(value: unknown): { url: URL; name?: string; mediaType?: string; mode: 'download' | 'saveAs' } {
+  if (typeof value !== 'object' || value === null
+    || !('url' in value) || typeof value.url !== 'string'
+    || ('name' in value && typeof value.name !== 'string')
+    || ('mediaType' in value && typeof value.mediaType !== 'string')
+    || !('mode' in value) || (value.mode !== 'download' && value.mode !== 'saveAs')) throw new Error('Invalid file save request')
+  const url = new URL(value.url)
+  if (!['https:', 'http:', 'blob:', 'data:'].includes(url.protocol) || url.username || url.password) throw new Error('Unsupported file source')
+  return { url, mode: value.mode,
+    ...'name' in value ? { name: value.name as string } : {},
+    ...'mediaType' in value ? { mediaType: value.mediaType as string } : {},
+  }
+}
+
+/**
+ * Install trusted-window original-file operations.
+ * @param assertOwner - rejects shell pages, subframes, and unowned windows.
+ * @param hostUrl - current application Host excluded from image reads.
+ */
+export function installFileActions(
+  assertOwner: (event: IpcMainInvokeEvent) => BrowserWindow, hostUrl: () => string | undefined = () => undefined,
+): void {
+  const timeoutMs = resolveDurationMs(process.env, 'DSH_DESKTOP_IMAGE_READ_TIMEOUT_MS', 30_000)
+  const maxBytes = Number(process.env.DSH_DESKTOP_IMAGE_READ_MAX_BYTES ?? 64 * 1024 * 1024)
+  if (!Number.isSafeInteger(maxBytes) || maxBytes < 1) throw new Error('DSH_DESKTOP_IMAGE_READ_MAX_BYTES must be a positive integer')
+  const pending = new Map<string, {
+    event: IpcMainInvokeEvent
+    owner: BrowserWindow
+    request: ReturnType<typeof saveRequest>
+    finish: (result: FileSaveResult | Error) => void
+    started: () => void
+    item?: Electron.DownloadItem
+  }>()
+  session.defaultSession.on('will-download', (_event, item, contents) => {
+    const url = item.getURLChain()[0]
+    if (url === undefined || !new URL(url).hash.startsWith('#dsh-download=')) return
+    const entry = pending.get(url)
+    if (entry === undefined || entry.owner.webContents !== contents) { item.cancel(); return }
+    entry.started()
+    entry.item = item
+    let reserved: string | undefined
+    try {
+      assertOwner(entry.event)
+      const name = resolveDragFileName({
+        name: entry.request.name ?? item.getFilename(),
+        mediaType: item.getMimeType() || entry.request.mediaType || '',
+      })
+      let destination = join(app.getPath('downloads'), name)
+      if (entry.request.mode === 'saveAs') {
+        item.setSaveDialogOptions({ defaultPath: destination, properties: ['showOverwriteConfirmation', 'createDirectory'] })
+      } else {
+        const extension = extname(destination)
+        const stem = destination.slice(0, destination.length - extension.length)
+        for (let index = 0; ; index++) {
+          destination = index === 0 ? `${stem}${extension}` : `${stem} (${index})${extension}`
+          try { closeSync(openSync(destination, 'wx')); break }
+          catch (error) {
+            if (typeof error === 'object' && error !== null && 'code' in error && error.code === 'EEXIST') continue
+            throw error
+          }
+        }
+        reserved = destination
+        item.setSavePath(destination)
+      }
+      item.once('done', (_event, state) => {
+        try {
+          if (state !== 'completed') {
+            if (reserved !== undefined) rmSync(reserved, { force: true })
+            entry.finish(state === 'cancelled' ? { status: 'cancelled' } : new Error('File download interrupted'))
+            return
+          }
+          if (!pending.has(url)) return
+          assertOwner(entry.event)
+          entry.finish({ status: 'saved', path: item.getSavePath() })
+        } catch (error) { entry.finish(error instanceof Error ? error : new Error('File download unavailable')) }
+      })
+    } catch (error) {
+      item.cancel()
+      try { if (reserved !== undefined) rmSync(reserved, { force: true }) }
+      catch (cleanupError) {
+        entry.finish(new AggregateError([error, cleanupError], 'File download failed and its partial file could not be removed'))
+        return
+      }
+      entry.finish(error instanceof Error ? error : new Error('File download unavailable'))
+    }
+  })
+  const downloadTimeoutMs = resolveDurationMs(process.env, 'DSH_DESKTOP_FILE_DOWNLOAD_TIMEOUT_MS', 300_000)
+  ipcMain.handle(DESKTOP_IPC.fileSave, (event, value: unknown): Promise<FileSaveResult> => {
+    const owner = assertOwner(event)
+    const request = saveRequest(value)
+    // Fragments do not change the fetched resource; each native request has its own completion identity.
+    request.url.hash = `dsh-download=${randomUUID()}`
+    const url = request.url.href
+    return new Promise((resolve, reject) => {
+      const contents = owner.webContents
+      const finish = (result: FileSaveResult | Error): void => {
+        if (!pending.delete(url)) return
+        clearTimeout(timer)
+        owner.removeListener('closed', cancel)
+        contents.removeListener('did-start-navigation', navigate)
+        if (result instanceof Error) reject(result)
+        else resolve(result)
+      }
+      const cancel = (): void => {
+        const item = pending.get(url)?.item
+        finish({ status: 'cancelled' })
+        item?.cancel()
+      }
+      const navigate = (_event: Electron.Event, _url: string, inPlace: boolean, mainFrame: boolean): void => {
+        if (mainFrame && !inPlace) cancel()
+      }
+      const timer = setTimeout(() => {
+        const item = pending.get(url)?.item
+        finish(new Error('File download timed out'))
+        item?.cancel()
+      }, downloadTimeoutMs)
+      pending.set(url, { event, owner, request, finish, started: () => { clearTimeout(timer) } })
+      owner.once('closed', cancel)
+      contents.on('did-start-navigation', navigate)
+      try { contents.downloadURL(url) }
+      catch (error) { finish(error instanceof Error ? error : new Error('File download unavailable')) }
+    })
+  })
+  ipcMain.handle(DESKTOP_IPC.clipboardImageRead, async (event, value: unknown) => {
+    const owner = assertOwner(event)
+    if (typeof value !== 'string') throw new Error('Invalid image URL')
+    const checkedUrl = (value: string): URL => {
+      const url = new URL(value)
+      const host = hostUrl()
+      const application = host === undefined ? undefined : new URL(host)
+      if (!['https:', 'http:'].includes(url.protocol) || url.username || url.password
+        || application !== undefined && url.port === application.port
+        && (url.hostname === application.hostname || ['localhost', '127.0.0.1', '[::1]'].includes(url.hostname))) {
+        throw new Error('Invalid image URL')
+      }
+      return url
+    }
+    let url = checkedUrl(value)
+    const contents = owner.webContents
+    const lifetime = new AbortController()
+    const abort = (): void => { lifetime.abort() }
+    owner.once('closed', abort)
+    const navigate = (_event: Electron.Event, _url: string, inPlace: boolean, mainFrame: boolean): void => {
+      if (mainFrame && !inPlace) abort()
+    }
+    contents.on('did-start-navigation', navigate)
+    try {
+      const signal = AbortSignal.any([lifetime.signal, AbortSignal.timeout(timeoutMs)])
+      let response: Response
+      for (let redirects = 0; ; redirects++) {
+        response = await fetch(url, { signal, redirect: 'manual', credentials: 'omit', referrerPolicy: 'no-referrer' })
+        if (![301, 302, 303, 307, 308].includes(response.status)) break
+        await response.body?.cancel()
+        const location = response.headers.get('location')
+        if (redirects >= 20 || location === null) throw new Error('Invalid image redirect')
+        url = checkedUrl(new URL(location, url).href)
+      }
+      if (!response.ok) throw new Error('Original image unavailable')
+      const reader = response.body?.getReader()
+      if (reader === undefined) throw new Error('Original image unavailable')
+      const chunks: Uint8Array[] = []
+      let size = 0
+      try {
+        for (;;) {
+          const chunk = await reader.read()
+          if (chunk.done) break
+          size += chunk.value.byteLength
+          if (size > maxBytes) throw new Error('Original image exceeds the download limit')
+          chunks.push(chunk.value)
+        }
+      } finally { await reader.cancel(); reader.releaseLock() }
+      assertOwner(event)
+      lifetime.signal.throwIfAborted()
+      return { bytes: new Uint8Array(Buffer.concat(chunks)), mediaType: response.headers.get('content-type') ?? '' }
+    } finally {
+      owner.removeListener('closed', abort)
+      contents.removeListener('did-start-navigation', navigate)
+    }
+  })
+}
diff --git a/apps/desktop/src/ipc.ts b/apps/desktop/src/ipc.ts
index e62a84f0a1..a3c5f5d935 100644
--- a/apps/desktop/src/ipc.ts
+++ b/apps/desktop/src/ipc.ts
@@ -1,3 +1,4 @@
+import type { DesktopFileActions } from '@deepseek-ai/dsh-client-ui-file-actions/types'
 /** Typed preload operations exposed only by the Electron shell. */
 
 import type { DesktopKeyboardApi, DesktopShortcutsApi } from '@deepseek-ai/dsh-client-shortcuts/protocol'
@@ -7,6 +8,8 @@ import type { DesktopFileDrag } from '@deepseek-ai/dsh-util-file-drag'
 
 /** IPC channel names kept private to the desktop application bundle. */
 export const DESKTOP_IPC = {
+  fileSave: 'dsh-desktop:file-save',
+  clipboardImageRead: 'dsh-desktop:clipboard-image-read',
   shortcutsInput: 'dsh-desktop:shortcuts-input',
   shortcutsCloseWindow: 'dsh-desktop:shortcuts-close-window',
   shortcutsGet: 'dsh-desktop:shortcuts-get',
@@ -76,6 +79,7 @@ export interface DesktopUpdatePresentation {
 
 /** Product documents cannot supply update versions, package URLs, or installation authorization. */
 export interface DshDesktopProductApi {
+  readonly fileActions: DesktopFileActions
   readonly protocolVersion: 1
   readonly browser: DesktopBrowserBridge
   readonly fileDrag: DesktopFileDrag
diff --git a/apps/desktop/src/main.ts b/apps/desktop/src/main.ts
index 4770fe83bf..674221b671 100644
--- a/apps/desktop/src/main.ts
+++ b/apps/desktop/src/main.ts
@@ -1,3 +1,4 @@
+import { installFileActions } from './file-actions.ts'
 import type { ProductEventMap, ProductEvent } from '@deepseek-ai/dsh-client-product-analytics/types'
 import { WINDOWS_TITLEBAR_HEIGHT } from './windows-layout.ts'
 /** Electron shell: desktop project ownership, custom protocol, windows, and lifecycle. */
@@ -826,6 +827,7 @@ async function main(): Promise<void> {
       || !event.senderFrame.url.startsWith('dsh-app://app/')) throw new Error('Rejected Platform command')
     return owner
   }
+  installFileActions(assertMainApplication, () => hostUrl)
   ipcMain.on(PLATFORM_IPC.bootstrap, (event) => {
     try { event.returnValue = platformView.bootstrap(event) }
     catch { event.returnValue = null }
diff --git a/apps/desktop/src/preload-app.ts b/apps/desktop/src/preload-app.ts
index c9937a301e..26266b4f1c 100644
--- a/apps/desktop/src/preload-app.ts
+++ b/apps/desktop/src/preload-app.ts
@@ -1,3 +1,4 @@
+import type { FileSaveResult } from '@deepseek-ai/dsh-client-ui-file-actions/types'
 /** Origin-scoped boot, native directory selection, host paths of picked files, and update presentation with native confirmation actions. */
 
 import type { DesktopShortcutInput, ShortcutConfigSnapshot, ShortcutSaveResult } from '@deepseek-ai/dsh-client-shortcuts/protocol'
@@ -14,6 +15,11 @@ import type { FileDragHandle } from '@deepseek-ai/dsh-util-file-drag'
 function createProductApi(): DshDesktopProductApi {
   return {
     protocolVersion: 1,
+    fileActions: {
+      save: request => ipcRenderer.invoke(DESKTOP_IPC.fileSave, request) as Promise<FileSaveResult>,
+      readClipboardImage: url => ipcRenderer.invoke(DESKTOP_IPC.clipboardImageRead, url) as
+        Promise<{ bytes: Uint8Array; mediaType: string }>,
+    },
     browser: createDesktopBrowserBridge(),
     fileDrag: {
       prepare: (source, requestId) => ipcRenderer.invoke(DESKTOP_IPC.fileDragPrepare, source, requestId) as
diff --git a/apps/desktop/tests/cua-optional-package.spec.ts b/apps/desktop/tests/cua-optional-package.spec.ts
index 3f3f7ad572..85ef15f0ee 100644
--- a/apps/desktop/tests/cua-optional-package.spec.ts
+++ b/apps/desktop/tests/cua-optional-package.spec.ts
@@ -1,4 +1,4 @@
-/** Cold pnpm requests exercise shipped CUA dependency/platform metadata with inert package contents. */
+/** Cold pnpm requests exercise on-demand CUA dependency/platform metadata with inert package contents. */
 import { createHash } from 'node:crypto'
 import { createServer } from 'node:http'
 import { mkdir, mkdtemp, readFile, rm, writeFile } from 'node:fs/promises'
@@ -37,18 +37,20 @@ it('fetches the macOS optional tarball only for Darwin, with an empty cache for
   const cli = await readManifest('apps/cli')
   const bundle = await readManifest('packages/experimental/cua-bundle')
   const native = await readManifest('packages/experimental/cua-macos')
-  expect(cli.dependencies).toHaveProperty(bundleName)
+  expect(cli.dependencies).not.toHaveProperty(bundleName)
   expect(bundle.dependencies).not.toHaveProperty(providerName)
   expect(bundle.optionalDependencies).toEqual({ [providerName]: 'workspace:*' })
   expect(native.os).toEqual(['darwin'])
   const version = '1.0.0'
   const bundleDependencies = Object.fromEntries(Object.keys(bundle.dependencies as Record<string, string>).map(name => [name, version]))
   const manifests = [
-    { name: cli.name, version, dependencies: { [bundleName]: version } },
+    { name: cli.name, version },
     { name: bundleName, version, dependencies: bundleDependencies, optionalDependencies: { [providerName]: version } },
     ...Object.keys(bundleDependencies).map(name => ({ name, version })),
     { name: providerName, version, os: native.os, files: native.files },
   ]
+  const generation = 'a'.repeat(64)
+  const nativePayload = `native/bin/darwin-arm64/${generation}/DSH Computer Use.app/Contents/MacOS/dsh-cua-native`
   const packages = new Map<string, { manifest: Record<string, unknown>; bytes: Buffer }>()
   for (const manifest of manifests) {
     const name = String(manifest.name)
@@ -56,18 +58,20 @@ it('fetches the macOS optional tarball only for Darwin, with an empty cache for
     await mkdir(directory)
     await writeFile(join(directory, 'package.json'), JSON.stringify(manifest))
     if (name === providerName) {
-      await mkdir(join(directory, 'native/bin/darwin-arm64'), { recursive: true })
+      await mkdir(join(directory, nativePayload, '..'), { recursive: true })
       for (const file of ['.gitignore', '.npmignore']) {
         await writeFile(join(directory, 'native', file), await readFile(join(repository, 'packages/experimental/cua-macos/native', file)))
       }
-      await writeFile(join(directory, 'native/bin/darwin-arm64/dsh-cua-native'), 'inert native payload')
+      await writeFile(join(directory, 'native/bin/darwin-arm64/current.json'), JSON.stringify({ bundle: generation }))
+      await writeFile(join(directory, nativePayload), 'inert native payload')
     }
     await command(['pack', '--out', 'package.tgz'], directory)
     const bytes = await readFile(join(directory, 'package.tgz'))
     packages.set(name, { manifest, bytes })
     if (name === providerName) {
       const result = await execa('tar', ['-tzf', join(directory, 'package.tgz')])
-      expect(result.stdout).toContain('package/native/bin/darwin-arm64/dsh-cua-native')
+      expect(result.stdout).toContain('package/native/bin/darwin-arm64/current.json')
+      expect(result.stdout).toContain(`package/${nativePayload}`)
     }
   }
   const requests: string[] = []
@@ -98,13 +102,13 @@ it('fetches the macOS optional tarball only for Darwin, with an empty cache for
   await new Promise<void>((resolve, reject) => { server.once('error', reject); server.listen(0, '127.0.0.1', resolve) })
   const address = server.address()
   if (!address || typeof address === 'string') throw new Error('fixture registry has no TCP address')
-  for (const target of ['darwin', 'win32', 'linux', 'linux-unrestricted']) {
+  for (const target of ['darwin-base', 'darwin', 'win32', 'linux', 'linux-unrestricted']) {
     unrestricted = target === 'linux-unrestricted'
     const project = join(root, target)
     await mkdir(project)
-    await writeFile(join(project, 'package.json'), JSON.stringify({ private: true, dependencies: { [String(cli.name)]: version } }))
+    await writeFile(join(project, 'package.json'), JSON.stringify({ private: true, dependencies: { [target === 'darwin-base' ? String(cli.name) : bundleName]: version } }))
     await writeFile(join(project, 'pnpm-workspace.yaml'), [
-      'autoInstallPeers: false', 'supportedArchitectures:', `  os: [${unrestricted ? 'linux' : target}]`,
+      'autoInstallPeers: false', 'supportedArchitectures:', `  os: [${unrestricted ? 'linux' : target === 'darwin-base' ? 'darwin' : target}]`,
       '  cpu: [arm64]', 'minimumReleaseAge: 0', '',
     ].join('\n'))
     requests.length = 0
@@ -113,8 +117,8 @@ it('fetches the macOS optional tarball only for Darwin, with an empty cache for
       `--config.registry=http://127.0.0.1:${address.port}/`, `--config.store-dir=${join(project, 'store')}`,
       `--config.cache-dir=${join(project, 'cache')}`, `--config.state-dir=${join(project, 'state')}`,
     ], project)
-    expect(requests).toContain(`/${bundleName}.tgz`)
-    expect(requests).toContain('/@deepseek-ai/dsh-cua.tgz')
+    expect(requests.includes(`/${bundleName}.tgz`)).toBe(target !== 'darwin-base')
+    expect(requests.includes('/@deepseek-ai/dsh-cua.tgz')).toBe(target !== 'darwin-base')
     expect(requests.includes(`/${providerName}.tgz`), `${target}: ${JSON.stringify(requests)}\n${output}`)
       .toBe(target === 'darwin' || unrestricted)
   }
diff --git a/apps/desktop/tests/desktop-publish-tag.spec.ts b/apps/desktop/tests/desktop-publish-tag.spec.ts
index 7a13daba54..06894f7504 100644
--- a/apps/desktop/tests/desktop-publish-tag.spec.ts
+++ b/apps/desktop/tests/desktop-publish-tag.spec.ts
@@ -3,13 +3,13 @@ import { publishDesktopTag } from '../scripts/desktop-publish-tag.ts'
 
 const commit = 'a'.repeat(40)
 const tag = (sha = commit) => ({ object: { type: 'commit', sha } })
-function transport(replies: Array<{ status: number; body?: object }>) {
+function transport(replies: Array<{ status: number; body?: object; rawBody?: string; headers?: Record<string, string> }>) {
   const calls: Array<{ url: string; init: RequestInit | undefined }> = []
   const request: typeof fetch = async (url, init) => {
     calls.push({ url: typeof url === 'string' ? url : url instanceof URL ? url.href : url.url, init })
     const reply = replies.shift()
     if (!reply) throw new Error('unexpected HTTP request')
-    return new Response(JSON.stringify(reply.body ?? {}), { status: reply.status })
+    return new Response(reply.rawBody ?? JSON.stringify(reply.body ?? {}), { status: reply.status, headers: reply.headers ?? {} })
   }
   return { calls, request }
 }
@@ -57,3 +57,36 @@ it('explains an existing annotated tag without replacing it', async () => {
   await expect(publishDesktopTag('owner/repo', '1.2.3', commit, 'fixture-token', http.request)).rejects.toThrow(/not a lightweight commit tag/u)
   expect(http.calls).toHaveLength(1)
 })
+
+it('keeps the creation status and safe rule diagnostic when no competing tag exists', async () => {
+  const http = transport([{ status: 404 }, { status: 422,
+    headers: { 'x-github-request-id': 'ABCD:1234' },
+    body: { message: 'Repository rule violations found for refs/tags/desktop-v1.2.3', errors: ['secret-value'] } }, { status: 404 }])
+  const failure = publishDesktopTag('owner/repo', '1.2.3', commit, 'fixture-token', http.request)
+  await expect(failure).rejects.toThrow('creation failed (HTTP 422; GitHub request ABCD:1234); follow-up tag lookup returned HTTP 404; repository rules rejected')
+  await expect(failure).rejects.not.toThrow('secret-value')
+  expect(http.calls.map(call => call.init?.method ?? 'GET')).toEqual(['GET', 'POST', 'GET'])
+})
+
+it('does not echo arbitrary GitHub response text or unrecognized request IDs', async () => {
+  const http = transport([{ status: 404 }, { status: 422,
+    headers: { 'x-github-request-id': 'fixture-token' }, body: { message: 'fixture-token' } }, { status: 403 }])
+  const failure = publishDesktopTag('owner/repo', '1.2.3', commit, 'fixture-token', http.request)
+  await expect(failure).rejects.toThrow('creation failed (HTTP 422); follow-up tag lookup returned HTTP 403')
+  await expect(failure).rejects.not.toThrow('fixture-token')
+})
+
+it('still rejects a competing tag on a different commit', async () => {
+  const http = transport([{ status: 404 }, { status: 422 }, { status: 200, body: tag('b'.repeat(40)) }])
+  await expect(publishDesktopTag('owner/repo', '1.2.3', commit, 'fixture-token', http.request)).rejects.toThrow('creation failed (HTTP 422)')
+})
+
+it('retains creation context for a non-JSON rejection', async () => {
+  const http = transport([{ status: 404 }, { status: 422, rawBody: 'not JSON', headers: { 'x-github-request-id': 'ABCD:1234' } }, { status: 404 }])
+  await expect(publishDesktopTag('owner/repo', '1.2.3', commit, 'fixture-token', http.request)).rejects.toThrow('creation failed (HTTP 422; GitHub request ABCD:1234)')
+})
+
+it('retains creation context when the follow-up request fails', async () => {
+  const http = transport([{ status: 404 }, { status: 422, headers: { 'x-github-request-id': 'ABCD:1234' } }])
+  await expect(publishDesktopTag('owner/repo', '1.2.3', commit, 'fixture-token', http.request)).rejects.toThrow('creation failed (HTTP 422; GitHub request ABCD:1234); follow-up tag lookup failed')
+})
diff --git a/apps/desktop/tests/desktop-publish-templates.spec.ts b/apps/desktop/tests/desktop-publish-templates.spec.ts
new file mode 100644
index 0000000000..0ead9a11ab
--- /dev/null
+++ b/apps/desktop/tests/desktop-publish-templates.spec.ts
@@ -0,0 +1,35 @@
+import { mkdtemp, mkdir, readFile, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join, posix, win32 } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import { expect, it } from 'vitest'
+import { readDesktopPublishConfig, type DesktopPublishConfig } from '../scripts/desktop-publish-config.ts'
+
+for (const platform of ['macos', 'windows'] as const) {
+  for (const preset of ['test', 'production'] as const) {
+    it(`accepts the ${platform} ${preset} template after machine paths are supplied`, async () => {
+      const path = fileURLToPath(new URL(`../config/publishing/${platform}/${preset}.json.example`, import.meta.url))
+      const template = JSON.parse(await readFile(path, 'utf8')) as DesktopPublishConfig
+      const paths = platform === 'windows' ? win32 : posix
+      expect(paths.isAbsolute(template.credentialsFile)).toBe(true)
+      expect(template[platform === 'macos' ? 'macOS' : 'windows']).toBeDefined()
+      expect(Object.hasOwn(template, 'secretId')).toBe(false)
+      expect(Object.hasOwn(template, 'secretKey')).toBe(false)
+      if (preset === 'production') expect(paths.isAbsolute(template.githubApp?.privateKeyFile ?? '')).toBe(true)
+      const root = await mkdtemp(join(tmpdir(), 'publish-template-'))
+      try {
+        await mkdir(join(root, 'publishing'))
+        // The parser uses the current host's path syntax; examples retain their target platform's paths.
+        const config = { ...template, credentialsFile: join(root, 'absent-credentials.json'),
+          ...(template.githubApp ? { githubApp: { ...template.githubApp, privateKeyFile: join(root, 'absent-key.pem') } } : {}) }
+        const output = join(root, 'publishing', `${preset}.json`)
+        await writeFile(output, JSON.stringify(config))
+        await expect(readDesktopPublishConfig(root, preset)).resolves.toEqual(config)
+        await writeFile(output, JSON.stringify({ ...config, bucket: undefined }))
+        const failure = readDesktopPublishConfig(root, preset)
+        await expect(failure).rejects.toHaveProperty('name', 'ZodError')
+        await expect(failure).rejects.toHaveProperty('issues.0.path', ['bucket'])
+      } finally { await rm(root, { recursive: true, force: true }) }
+    })
+  }
+}
diff --git a/apps/desktop/tests/file-actions.spec.ts b/apps/desktop/tests/file-actions.spec.ts
new file mode 100644
index 0000000000..972f64e7ee
--- /dev/null
+++ b/apps/desktop/tests/file-actions.spec.ts
@@ -0,0 +1,213 @@
+/** Native original-byte saves and window-scoped IPC ownership. */
+import { EventEmitter } from 'node:events'
+import { mkdtemp, readFile, readdir, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import type { IpcMainInvokeEvent } from 'electron'
+import { afterEach, expect, it, vi } from 'vitest'
+import { installFileActions } from '../src/file-actions.ts'
+import { DESKTOP_IPC } from '../src/ipc.ts'
+
+const electron = vi.hoisted(() => ({
+  app: { getPath: vi.fn() }, ipcMain: { handle: vi.fn() }, session: { defaultSession: { on: vi.fn() } },
+}))
+vi.mock('electron', () => electron)
+const roots: string[] = []
+const owners: EventEmitter[] = []
+afterEach(async () => {
+  for (const owner of owners.splice(0)) owner.emit('closed')
+  vi.useRealTimers(); vi.unstubAllEnvs()
+  await Promise.all(roots.splice(0).map(path => rm(path, { recursive: true, force: true }))); vi.clearAllMocks(); vi.unstubAllGlobals()
+})
+async function directory() { const path = await mkdtemp(join(tmpdir(), 'dsh-file-actions-')); roots.push(path); return path }
+
+function harness(root: string) {
+  const owner = Object.assign(new EventEmitter(), {
+    webContents: Object.assign(new EventEmitter(), { downloadURL: vi.fn<(url: string) => void>() }), isDestroyed: () => false,
+  })
+  owners.push(owner)
+  const assertOwner = vi.fn(() => owner as never)
+  electron.app.getPath.mockReturnValue(root)
+  installFileActions(assertOwner)
+  const event = {} as IpcMainInvokeEvent
+  const invoke = async (channel: string, value: unknown): Promise<unknown> => {
+    const handler = electron.ipcMain.handle.mock.calls.find(([name]) => name === channel)?.[1] as
+      (event: IpcMainInvokeEvent, value: unknown) => Promise<unknown>
+    return handler(event, value)
+  }
+  const item = (mime = 'image/gif', url = owner.webContents.downloadURL.mock.lastCall![0]) => {
+    let destination = ''
+    const download = Object.assign(new EventEmitter(), {
+      getURLChain: () => [url],
+      getFilename: () => 'original.gif', getMimeType: () => mime, getSavePath: () => destination,
+      setSavePath: vi.fn((path: string) => { destination = path }),
+      setSaveDialogOptions: vi.fn(), cancel: vi.fn(),
+    })
+    const willDownload = electron.session.defaultSession.on.mock.calls[0]![1] as
+      (event: object, item: object, contents: object) => void
+    willDownload({}, download, owner.webContents)
+    return download
+  }
+  const save = async (mode: 'download' | 'saveAs' = 'download') => {
+    const pending = invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/original.gif', name: 'image.gif', mode })
+    const download = item()
+    if (mode === 'download') await writeFile(download.getSavePath(), new Uint8Array([0, 128, 255]))
+    download.emit('done', {}, 'completed')
+    return pending
+  }
+  return { owner, assertOwner, invoke, item, save }
+}
+
+it('returns the completed destination and releases download listeners', async () => {
+  const root = await directory(), f = harness(root)
+  await expect(f.save()).resolves.toEqual({ status: 'saved', path: join(root, 'image.gif') })
+  expect(f.owner.listenerCount('closed')).toBe(0)
+  expect(f.owner.webContents.listenerCount('did-start-navigation')).toBe(0)
+})
+
+it.each(['file:///private/data', 'dsh-app://app/api/private', 'javascript:alert(1)'])('rejects unsupported URL %s', async (url) => {
+  const root = await directory(), f = harness(root)
+  await expect(f.invoke(DESKTOP_IPC.fileSave, { url, mode: 'download' })).rejects.toThrow('Unsupported')
+  expect(await readdir(root)).toEqual([])
+})
+
+it('retains original downloads and reserves distinct paths until Chromium finishes', async () => {
+  const root = await directory(), f = harness(root)
+  await writeFile(join(root, 'image.gif'), 'previous')
+  await f.save()
+  expect(await readFile(join(root, 'image.gif'), 'utf8')).toBe('previous')
+  expect(await readFile(join(root, 'image (1).gif'))).toEqual(Buffer.from([0, 128, 255]))
+})
+
+it.each(['cancelled', 'interrupted'] as const)('reports native %s without a completed path', async (state) => {
+  const root = await directory(), f = harness(root)
+  const pending = f.invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/a', name: 'wrong.png', mode: 'download' })
+  const download = f.item('image/webp')
+  expect(download.setSavePath).toHaveBeenCalledWith(join(root, 'wrong.webp'))
+  download.emit('done', {}, state)
+  if (state === 'cancelled') await expect(pending).resolves.toEqual({ status: 'cancelled' })
+  else await expect(pending).rejects.toThrow('interrupted')
+  expect(await readdir(root)).toEqual([])
+})
+
+it('uses the native save dialog and waits for completion before reporting success', async () => {
+  const root = await directory(), f = harness(root)
+  const pending = f.invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/a', name: 'photo.png', mode: 'saveAs' })
+  const download = f.item('image/jpeg')
+  expect(download.setSavePath).not.toHaveBeenCalled()
+  expect(download.setSaveDialogOptions).toHaveBeenCalledWith({ defaultPath: join(root, 'photo.jpg'), properties: ['showOverwriteConfirmation', 'createDirectory'] })
+  download.emit('done', {}, 'cancelled')
+  await expect(pending).resolves.toEqual({ status: 'cancelled' })
+  f.assertOwner.mockImplementation(() => { throw new Error('Rejected owner') })
+  await expect(f.invoke(DESKTOP_IPC.fileSave, {})).rejects.toThrow('Rejected owner')
+})
+
+it('cancels pending downloads when the owning document changes', async () => {
+  const f = harness(await directory())
+  const pending = f.invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/a', mode: 'download' })
+  const download = f.item()
+  f.owner.webContents.emit('did-start-navigation', {}, 'dsh-app://app/', false, true)
+  await expect(pending).resolves.toEqual({ status: 'cancelled' })
+  expect(download.cancel).toHaveBeenCalledOnce()
+  download.emit('done', {}, 'cancelled')
+  expect(f.owner.listenerCount('closed')).toBe(0)
+})
+
+it('matches overlapping downloads of the same source to their captured requests', async () => {
+  const root = await directory(), f = harness(root)
+  const first = f.invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/a', name: 'first.gif', mode: 'download' })
+  const firstUrl = f.owner.webContents.downloadURL.mock.lastCall![0]
+  const second = f.invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/a', name: 'second.gif', mode: 'saveAs' })
+  const secondItem = f.item()
+  const firstItem = f.item('image/gif', firstUrl)
+  expect(firstItem.setSavePath).toHaveBeenCalledWith(join(root, 'first.gif'))
+  expect(secondItem.setSaveDialogOptions.mock.lastCall?.[0]).toMatchObject({ defaultPath: join(root, 'second.gif') })
+  secondItem.emit('done', {}, 'cancelled')
+  firstItem.emit('done', {}, 'completed')
+  await expect(first).resolves.toMatchObject({ status: 'saved' })
+  await expect(second).resolves.toEqual({ status: 'cancelled' })
+})
+
+it('retires timed-out downloads and cancels items arriving after their window closes', async () => {
+  vi.useFakeTimers(); vi.stubEnv('DSH_DESKTOP_FILE_DOWNLOAD_TIMEOUT_MS', '1000')
+  const root = await directory(), f = harness(root)
+  const pending = f.invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/a', mode: 'download' })
+  const rejected = expect(pending).rejects.toThrow('timed out')
+  await vi.advanceTimersByTimeAsync(1000)
+  await rejected
+  const download = f.item()
+  expect(download.cancel).toHaveBeenCalledOnce()
+  download.emit('done', {}, 'cancelled')
+  expect(await readdir(root)).toEqual([])
+  expect(f.owner.listenerCount('closed')).toBe(0)
+  expect(f.owner.webContents.listenerCount('did-start-navigation')).toBe(0)
+
+  const late = f.invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/a', mode: 'download' })
+  f.owner.emit('closed')
+  await expect(late).resolves.toEqual({ status: 'cancelled' })
+  const stale = f.item()
+  expect(stale.cancel).toHaveBeenCalledOnce()
+  expect(stale.setSavePath).not.toHaveBeenCalled()
+})
+
+it('allows the native save dialog to remain open beyond the download startup deadline', async () => {
+  vi.useFakeTimers(); vi.stubEnv('DSH_DESKTOP_FILE_DOWNLOAD_TIMEOUT_MS', '1000')
+  const f = harness(await directory())
+  const pending = f.invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/a', mode: 'saveAs' })
+  const download = f.item()
+  await vi.advanceTimersByTimeAsync(2000)
+  expect(download.cancel).not.toHaveBeenCalled()
+  download.emit('done', {}, 'completed')
+  await expect(pending).resolves.toMatchObject({ status: 'saved' })
+})
+
+it('reports a synchronous Chromium launch failure and releases pending listeners', async () => {
+  const f = harness(await directory())
+  f.owner.webContents.downloadURL.mockImplementation(() => { throw new Error('Download unavailable') })
+  await expect(f.invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/a', mode: 'download' })).rejects.toThrow('Download unavailable')
+  expect(f.owner.listenerCount('closed')).toBe(0)
+  expect(f.owner.webContents.listenerCount('did-start-navigation')).toBe(0)
+})
+
+it('aborts original-image reads on window navigation and releases lifecycle listeners', async () => {
+  const f = harness(await directory())
+  let signal!: AbortSignal
+  vi.stubGlobal('fetch', vi.fn((_url: URL, options: RequestInit) => new Promise<Response>((_resolve, reject) => {
+    signal = options.signal!
+    signal.addEventListener('abort', () => { reject(new DOMException('Aborted', 'AbortError')) }, { once: true })
+  })))
+  const reading = f.invoke(DESKTOP_IPC.clipboardImageRead, 'https://images.example/original.gif')
+  f.owner.webContents.emit('did-start-navigation', {}, 'dsh-app://app/', false, true)
+  await expect(reading).rejects.toThrow('Aborted')
+  expect(signal.aborted).toBe(true)
+  expect(f.owner.listenerCount('closed')).toBe(0)
+  expect(f.owner.webContents.listenerCount('did-start-navigation')).toBe(0)
+})
+
+it('preserves pending downloads across iframe and same-document navigation', async () => {
+  const root = await directory(), f = harness(root)
+  const pending = f.invoke(DESKTOP_IPC.fileSave, { url: 'https://images.example/a', mode: 'saveAs' })
+  const download = f.item()
+  f.owner.webContents.emit('did-start-navigation', {}, 'https://example.org', false, false)
+  f.owner.webContents.emit('did-start-navigation', {}, 'dsh-app://app/#tab', true, true)
+  download.setSavePath(join(root, 'chosen.gif'))
+  download.emit('done', {}, 'completed')
+  await expect(pending).resolves.toEqual({ status: 'saved', path: join(root, 'chosen.gif') })
+  expect(download.cancel).not.toHaveBeenCalled()
+})
+
+it('rejects redirects to the application Host', async () => {
+  const root = await directory()
+  const owner = Object.assign(new EventEmitter(), {
+    webContents: Object.assign(new EventEmitter(), { downloadURL: vi.fn<(url: string) => void>() }), isDestroyed: () => false,
+  })
+  installFileActions(() => owner as never, () => 'http://127.0.0.1:19321')
+  const handler = (name: string) => electron.ipcMain.handle.mock.calls.find(([channel]) => channel === name)![1] as
+    (event: IpcMainInvokeEvent, value: unknown) => Promise<unknown>
+  const fetchImage = vi.fn(async () => new Response(null, { status: 302, headers: { location: 'http://localhost:19321/api/private' } }))
+  vi.stubGlobal('fetch', fetchImage)
+  const event = {} as IpcMainInvokeEvent
+  await expect(handler(DESKTOP_IPC.clipboardImageRead)(event, 'https://images.example/photo')).rejects.toThrow('Invalid image URL')
+  expect(fetchImage).toHaveBeenCalledOnce()
+  expect(await readdir(root)).toEqual([])
+})
diff --git a/apps/desktop/tests/main-startup.spec.ts b/apps/desktop/tests/main-startup.spec.ts
index 20325642a2..0cb7aa3e96 100644
--- a/apps/desktop/tests/main-startup.spec.ts
+++ b/apps/desktop/tests/main-startup.spec.ts
@@ -317,6 +317,7 @@ vi.mock('electron', () => ({
   },
   Menu: { setApplicationMenu: harness.menu.setApplicationMenu, buildFromTemplate: harness.menu },
   session: { defaultSession: {
+    on: vi.fn(),
     setPermissionCheckHandler: vi.fn(), setPermissionRequestHandler: vi.fn(), webRequest: { onBeforeSendHeaders: harness.socketHeaders },
   } },
   protocol: { registerSchemesAsPrivileged: vi.fn(), handle: harness.protocolHandle },
diff --git a/apps/desktop/tests/preload-app.spec.ts b/apps/desktop/tests/preload-app.spec.ts
index af9a9f226a..8001ae6fc2 100644
--- a/apps/desktop/tests/preload-app.spec.ts
+++ b/apps/desktop/tests/preload-app.spec.ts
@@ -38,6 +38,19 @@ it('exposes onboarding size activation to the application document', async () =>
   expect(electron.ipcRenderer.send.mock.calls).toEqual([[DESKTOP_IPC.onboardingActive, true], [DESKTOP_IPC.onboardingActive, false]])
 })
 
+it('routes original-file requests through the trusted application bridge', async () => {
+  vi.stubGlobal('location', new URL('dsh-app://app/'))
+  await import('../src/preload-app.ts')
+  const api = electron.contextBridge.exposeInMainWorld.mock.calls.find(([name]) => name === 'dshDesktop')?.[1] as DshDesktopProductApi
+  const request = { url: 'https://images.example/original.gif', name: 'image.gif', mode: 'download' as const }
+  await api.fileActions.save(request)
+  await api.fileActions.readClipboardImage('https://images.example/original.gif')
+  expect(electron.ipcRenderer.invoke.mock.calls).toEqual([
+    [DESKTOP_IPC.fileSave, request],
+    [DESKTOP_IPC.clipboardImageRead, 'https://images.example/original.gif'],
+  ])
+})
+
 it('limits product documents to update status and a native confirmation action', async () => {
   vi.stubGlobal('location', new URL('dsh-app://app/index.html'))
   await import('../src/preload-app.ts')
diff --git a/apps/desktop/tests/welcome-startup.spec.ts b/apps/desktop/tests/welcome-startup.spec.ts
index 7915248243..4ae8743e2e 100644
--- a/apps/desktop/tests/welcome-startup.spec.ts
+++ b/apps/desktop/tests/welcome-startup.spec.ts
@@ -87,6 +87,7 @@ vi.mock('electron', () => ({
   net: { fetch: vi.fn() },
   nativeTheme: state.nativeTheme,
   session: { defaultSession: {
+    on: vi.fn(),
     setPermissionCheckHandler: vi.fn(), setPermissionRequestHandler: vi.fn(), webRequest: { onBeforeSendHeaders: vi.fn() },
   } },
   protocol: { registerSchemesAsPrivileged: vi.fn(), handle: vi.fn() },
diff --git a/apps/desktop/tsconfig.client.json b/apps/desktop/tsconfig.client.json
index 3de33f06dd..eb17ebe087 100644
--- a/apps/desktop/tsconfig.client.json
+++ b/apps/desktop/tsconfig.client.json
@@ -18,6 +18,9 @@
     },
     {
       "path": "../../packages/client/product-analytics/tsconfig.client.json"
+    },
+    {
+      "path": "../../packages/client/ui-file-actions"
     }
   ]
 }
diff --git a/apps/desktop/tsconfig.host.json b/apps/desktop/tsconfig.host.json
index 44992641d5..7078ac8198 100644
--- a/apps/desktop/tsconfig.host.json
+++ b/apps/desktop/tsconfig.host.json
@@ -40,6 +40,9 @@
     },
     {
       "path": "../../packages/util/file-drag"
+    },
+    {
+      "path": "../../packages/client/ui-file-actions"
     }
   ],
   "exclude": [
diff --git a/apps/plugin-market-generator/package.json b/apps/plugin-market-generator/package.json
index d9e0d00dd0..a426b81646 100644
--- a/apps/plugin-market-generator/package.json
+++ b/apps/plugin-market-generator/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-plugin-market-generator",
   "description": "Reference generator of plugin market index files from a list of npm packages and Git repositories",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "private": true,
   "type": "module",
   "scripts": {
diff --git a/apps/web/package.json b/apps/web/package.json
index 7e2d1ad835..51ecc68787 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-web-frontend",
   "description": "Web application entry: vite build over the @deepseek-ai/dsh-client-web shell library; dist/ served by apps/cli's dsh web",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/apps/web/tests/caption-overlays.e2e.ts b/apps/web/tests/caption-overlays.e2e.ts
index 2a86277843..d336b64950 100644
--- a/apps/web/tests/caption-overlays.e2e.ts
+++ b/apps/web/tests/caption-overlays.e2e.ts
@@ -21,8 +21,9 @@ it('keeps settings and expanded plugin dialogs clear of the Windows caption acro
         document.documentElement.setAttribute('data-windows-titlebar', '')
         document.documentElement.style.setProperty('--dsh-windows-titlebar-height', '40px')
       })
-      const reopenSidebar = page.getByRole('button', { name: '打开侧边栏', exact: true })
-      if (await reopenSidebar.isVisible()) await reopenSidebar.click()
+      await page.setViewportSize({ width: 521, height: 600 })
+      await page.locator('[data-sidebar-drawer]').waitFor({ state: 'detached' })
+      const reopenSidebar = page.locator('[data-shell-leading]').getByRole('button', { name: '打开侧边栏', exact: true })
       await openSettings(page, 'zh')
       const settings = page.getByRole('dialog', { name: '设置', exact: true })
       const settingsMask = settings.locator('..').locator(':scope > [aria-hidden="true"]')
@@ -51,7 +52,7 @@ it('keeps settings and expanded plugin dialogs clear of the Windows caption acro
       await menu.waitFor({ state: 'hidden' })
       expect(await settings.isVisible()).toBe(true)
       await settings.getByRole('button', { name: '关闭', exact: true }).click()
-      if (await reopenSidebar.isVisible()) await reopenSidebar.click()
+      if (await page.locator('[data-sidebar-drawer][data-sidebar-collapsed]').count() > 0) await reopenSidebar.click()
       await page.getByRole('navigation', { name: '全局面板' }).getByRole('button', { name: '插件', exact: true }).click()
       await page.locator('[data-plugin-panel]').getByRole('button', { name: '添加插件', exact: true }).click()
       const plugin = page.getByRole('dialog', { name: '添加插件', exact: true })
@@ -88,7 +89,9 @@ it('keeps settings and expanded plugin dialogs clear of the Windows caption acro
           if (value === 'darwin') document.documentElement.setAttribute('data-platform', value)
           else document.documentElement.removeAttribute('data-platform')
         }, platform)
-        if (await reopenSidebar.isVisible()) await reopenSidebar.click()
+        // Publish the synthetic platform change through the frame's size observer.
+        await page.setViewportSize({ width: platform === 'darwin' ? 520 : 521, height: 600 })
+        await page.locator('[data-sidebar-drawer]').waitFor()
         await openSettings(page, 'zh')
         await expect.poll(async () => (await settings.boundingBox())?.y).toBe(platform === 'darwin' ? 68 : 0)
         expect((await settingsMask.boundingBox())?.y).toBe(0)
diff --git a/apps/web/tests/chat-scroll-contract.e2e.ts b/apps/web/tests/chat-scroll-contract.e2e.ts
index 6092eddc02..fd5f778c1e 100644
--- a/apps/web/tests/chat-scroll-contract.e2e.ts
+++ b/apps/web/tests/chat-scroll-contract.e2e.ts
@@ -309,6 +309,9 @@ async function loadedFlowRows(page: Page): Promise<number> {
 }
 
 async function openSeed(page: Page, fixture: ChatScrollFixture, tailMarker?: string): Promise<void> {
+  if (await page.locator('[data-sidebar-drawer][data-sidebar-collapsed]').count() > 0) {
+    await page.locator('[data-shell-leading]').getByRole('button', { name: 'Open sidebar', exact: true }).click()
+  }
   // Search collapsed into a header action; expand it before filling.
   const searchButton = page.getByRole('button', { name: 'Search sessions' })
   if (await searchButton.getAttribute('aria-expanded') !== 'true') await searchButton.click()
@@ -1700,9 +1703,6 @@ describe('web e2e: long Chat scroll contract', () => {
       await world.page.getByRole('tab', { name: 'Trajectory', exact: true }).click()
       await world.page.getByLabel('Trajectory timeline').waitFor({ timeout: 30_000 })
       await world.page.setViewportSize({ width: 700, height: 900 })
-      // The narrow breakpoint auto-collapses the sidebar. Re-open it because
-      // this scenario switches sessions while pinning the narrow Chat scroll owner.
-      await world.page.getByRole('button', { name: 'Open sidebar', exact: true }).click()
       await world.page.getByRole('tab', { name: 'Chat', exact: true }).click()
       await nextPaint(world.page)
       await expectSameFlowTop(world.page, sessionAnchor, RESPONSIVE_REFLOW_TOLERANCE)
diff --git a/apps/web/tests/client-plugin-live.e2e.ts b/apps/web/tests/client-plugin-live.e2e.ts
index 21ad5a1182..72a389f9c8 100644
--- a/apps/web/tests/client-plugin-live.e2e.ts
+++ b/apps/web/tests/client-plugin-live.e2e.ts
@@ -26,7 +26,7 @@ async function openInventory(page: Page, url: string) {
   return dialog
 }
 
-it('places dynamic Session menu rows by order among the shipped ones and removes them with their fiber', async () => {
+it('keeps ordered legacy Session menu rows before Archive and removes them with their fiber', async () => {
   const scaffold = await launchWebScaffold({ extraInstallAnchors: [join(FIXTURE, 'package.json')] })
   onTestFinished(() => scaffold.close())
   const workspace = await scaffold.ctx.workspaceRegistry.create(scaffold.workspaceCwd)
@@ -46,12 +46,13 @@ it('places dynamic Session menu rows by order among the shipped ones and removes
 
     const trailing = row.locator('[data-session-trailing]')
     const observations: { stage: string; icons: string[]; time: boolean; pinned: boolean; actions: boolean }[] = []
-    const observe = async (stage: string, iconsVisible: boolean, actionsVisible: boolean, target = row): Promise<void> => {
+    const observe = async (stage: string, iconsVisible: boolean, actionsVisible: boolean, target = row,
+      timeVisible = iconsVisible): Promise<void> => {
       const icons = target.locator('[data-session-trailing]')
       const actions = target.getByRole('button', { name: `Session actions for ${SESSION_TITLE}` })
       const time = target.locator('[class*="time"]')
       await expect.poll(() => icons.first().isVisible()).toBe(iconsVisible)
-      await expect.poll(() => time.isVisible()).toBe(iconsVisible)
+      await expect.poll(() => time.isVisible()).toBe(timeVisible)
       await expect.poll(() => actions.isVisible()).toBe(actionsVisible)
       observations.push({
         stage,
@@ -94,14 +95,16 @@ it('places dynamic Session menu rows by order among the shipped ones and removes
     await observe('menu-open', false, true)
     const menu = page.getByRole('menu')
     await menu.waitFor()
-    expect(await menu.getByRole('separator').count()).toBe(1)
+    expect(await menu.getByRole('separator').count()).toBe(3)
+    const exportRow = menu.getByRole('menuitem', { name: 'Export session', exact: true })
+    expect(await exportRow.locator('..').getByRole('separator').isVisible()).toBe(true)
     await compareOrRefreshGolden(
       SESSION_ACTION_EXPECTED,
       await captureStableAria(page, '[role="menu"]', scaffold.workspaceCwd),
       webSnapshotMode(),
     )
 
-    await menu.getByRole('menuitem', { name: 'Export session' }).press('Enter')
+    await exportRow.press('Enter')
     await expect.poll(() => menu.count()).toBe(0)
     expect(await page.evaluate(() => ({
       action: document.documentElement.dataset.sessionAction,
@@ -113,7 +116,7 @@ it('places dynamic Session menu rows by order among the shipped ones and removes
     await page.mouse.move(0, 0)
     await observe('blur', true, false)
     await page.setViewportSize({ width: 390, height: 844 })
-    await page.getByRole('button', { name: 'Open sidebar', exact: true }).first().click()
+    await page.locator('[data-shell-leading]').getByRole('button', { name: 'Open sidebar', exact: true }).click()
     await page.mouse.move(0, 0)
     await observe('narrow', true, false)
     const bounds = await row.evaluate((element) => {
@@ -133,23 +136,23 @@ it('places dynamic Session menu rows by order among the shipped ones and removes
     try {
       const touchConsole = watchConsole(touchPage)
       await touchPage.goto(scaffold.authenticatedUrl, { waitUntil: 'load' })
-      await touchPage.getByRole('button', { name: 'Open sidebar', exact: true }).first().click()
+      await touchPage.locator('[data-shell-leading]').getByRole('button', { name: 'Open sidebar', exact: true }).click()
       const touchRow = touchPage.getByRole('treeitem').filter({ has: touchPage.getByText(SESSION_TITLE, { exact: true }) })
       const touchTrigger = touchRow.getByRole('button', { name: `Session actions for ${SESSION_TITLE}` })
       await touchTrigger.waitFor()
       expect(await touchPage.evaluate(() => matchMedia('(hover: hover)').matches)).toBe(false)
-      await observe('touch', true, true, touchRow)
+      await observe('touch', true, true, touchRow, false)
       expect(await touchRow.getByRole('button', { name: 'Archive session', exact: true }).isVisible()).toBe(false)
       expect(await touchRow.getByRole('button', { name: 'Pin session', exact: true }).isVisible()).toBe(false)
       await touchTrigger.tap()
       await touchPage.getByRole('menu').waitFor()
-      await observe('touch-menu-open', true, true, touchRow)
+      await observe('touch-menu-open', true, true, touchRow, false)
       await touchPage.keyboard.press('Escape')
-      await observe('touch-menu-closed', true, true, touchRow)
+      await observe('touch-menu-closed', true, true, touchRow, false)
       await touchTrigger.tap()
       await touchPage.getByRole('menuitem', { name: 'Pin session', exact: true }).tap()
-      await touchRow.getByRole('img', { name: 'Pinned', exact: true }).waitFor()
-      await observe('touch-pinned', true, true, touchRow)
+      await touchRow.getByRole('button', { name: 'Unpin session', exact: true }).waitFor()
+      await observe('touch-pinned', true, true, touchRow, false)
       const touchBounds = await touchRow.evaluate((element) => {
         const title = element.querySelector('[class*="title"]')!.getBoundingClientRect()
         const resting = element.querySelector('[class*="rowResting"]')!.getBoundingClientRect()
@@ -173,7 +176,7 @@ it('places dynamic Session menu rows by order among the shipped ones and removes
       expect(await row.evaluate(element => element === document.activeElement)).toBe(true)
       await observe('clicked-archived-row', true, false)
       await scaffold.ctx.workspaceRegistry.unarchiveSession(sessionId)
-      await observe('touch-unarchived', true, true, touchRow)
+      await observe('touch-unarchived', true, true, touchRow, false)
       expect(touchConsole.pageErrors).toEqual([])
     } finally {
       await touchPage.close()
@@ -193,13 +196,13 @@ it('places dynamic Session menu rows by order among the shipped ones and removes
     await row.hover()
     await trigger.click()
     await menu.waitFor()
-    const remainingNames = ['Pin session', 'Rename', 'Fork session', 'Archive session', 'Copy Session ID']
+    const remainingNames = ['Pin session', 'Rename', 'Fork session', 'Copy Session ID', 'Archive session']
     const remainingItems = menu.getByRole('menuitem')
     expect(await remainingItems.count()).toBe(remainingNames.length)
     for (const [index, name] of remainingNames.entries()) {
       expect(await remainingItems.nth(index).and(menu.getByRole('menuitem', { name, exact: true })).count()).toBe(1)
     }
-    expect(await menu.getByRole('separator').count()).toBe(0)
+    expect(await menu.getByRole('separator').count()).toBe(2)
     await page.context().grantPermissions(['clipboard-read', 'clipboard-write'])
     await menu.getByRole('menuitem', { name: 'Copy Session ID', exact: true }).click()
     await expect.poll(() => menu.count()).toBe(0)
diff --git a/apps/web/tests/context-menus.e2e.ts b/apps/web/tests/context-menus.e2e.ts
new file mode 100644
index 0000000000..9e350ec6d4
--- /dev/null
+++ b/apps/web/tests/context-menus.e2e.ts
@@ -0,0 +1,386 @@
+/** Context gestures against built plugins, seeded Sessions, and original files. */
+import { mkdir, readFile, writeFile } from 'node:fs/promises'
+import { join } from 'node:path'
+import { chromium, type Browser, type Locator, type Page } from 'playwright'
+import { afterAll, beforeAll, describe, expect, it, onTestFailed, vi } from 'vitest'
+import { createLaunchEnvironmentSnapshot } from '@deepseek-ai/dsh-launch-environment'
+import { createAssistantMessage, createUserMessage } from '@deepseek-ai/dsh-llm'
+import { SESSION_FORMAT_VERSION, Session, SessionId } from '@deepseek-ai/dsh-session'
+import type {} from '@deepseek-ai/dsh-session-title'
+import { launchWebScaffold, seedSession, watchConsole, type WebScaffold } from './scaffold.ts'
+import { saveFailureShot } from './support.ts'
+
+const GIF = Buffer.from('R0lGODdhMAAgAIEAAEtu5gAAAAAAAAAAACwAAAAAMAAgAEAIQQABCBxIsKDBgwgTKlzIsKHDhxAjSpxIsaLFixgzatzIsaPHjyBDihxJsqTJkyhTqlzJsqXLlzBjypxJs6bNmQEBADs=', 'base64')
+async function menuLabels(menu: Locator): Promise<string[]> {
+  return menu.getByRole('menuitem').evaluateAll(items => items.map((item) => {
+    const copy = item.cloneNode(true) as HTMLElement
+    for (const decoration of copy.querySelectorAll('[aria-hidden="true"]')) decoration.remove()
+    return copy.textContent ?? ''
+  }))
+}
+function fixture(title: string): string {
+  const session = Session.create(SessionId('context-menus-source'))
+  session.append('turn/start', { turn: 1 })
+  const user = session.append('user/message', createUserMessage({ content: [{ type: 'text', text: 'Show the output.' }], source: { kind: 'user' } }), { surfaceOp: 'append' })
+  session.append('session/title', { title, messageSeqs: [user.seq], source: { kind: 'fallback' } })
+  session.append('step/start', { turn: 1, step: 1 })
+  session.append('assistant/message', { stream: [], turn: 1, step: 1, message: createAssistantMessage({
+    content: [{ type: 'text', text: '[First file](first.txt#L2) [Second file](second.txt) [Website](https://example.com/path?q=1#fragment)\n\n![Original](original.gif) ![Remote](https://images.example/original.gif)\n\nCONTEXT_MENU_READY' }],
+    source: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
+  }) }, { surfaceOp: 'append' })
+  session.append('step/end', { turn: 1, step: 1 })
+  session.append('turn/end', { turn: 1, reason: { kind: 'completed' } })
+  return [JSON.stringify({ type: 'session', version: SESSION_FORMAT_VERSION, id: '{{sessionId}}', createdAt: 0, cwd: '{{cwd}}', isSeeded: false, delegationDepth: 0 }),
+    ...session.snapshotEvents().map(event => JSON.stringify({ ...event, time: 1_000 + event.seq * 1_000 })), ''].join('\n')
+}
+
+describe.each(['MacIntel', 'Win32', 'Linux x86_64'])('web context menus on %s', (platform) => {
+  let scaffold: WebScaffold, browser: Browser, page: Page
+  let tripwire: ReturnType<typeof watchConsole>
+  beforeAll(async () => {
+    scaffold = await launchWebScaffold({ openInAppEnvironment: createLaunchEnvironmentSnapshot([{ source: 'process', values: { SSH_CONNECTION: '10.0.0.2 55000 10.0.0.9 22' } }]) })
+    await mkdir(join(scaffold.workspaceCwd, 'folder'))
+    await scaffold.ctx.workspaceRegistry.create(join(scaffold.workspaceCwd, 'folder'), 'Menu workspace')
+    await writeFile(join(scaffold.workspaceCwd, 'first.txt'), 'FIRST\nSECOND\nTHIRD\n')
+    await writeFile(join(scaffold.workspaceCwd, 'second.txt'), 'SECOND FILE\n')
+    await writeFile(join(scaffold.workspaceCwd, 'original.gif'), GIF)
+    await seedSession(scaffold, fixture('Menu foreground'), 'context-menu-first')
+    await seedSession(scaffold, fixture('Menu background'), 'context-menu-other')
+    browser = await chromium.launch()
+    const context = await browser.newContext({ viewport: { width: 1680, height: 1000 }, locale: 'en-US', timezoneId: 'Asia/Shanghai' })
+    await context.addInitScript((value) => { Object.defineProperty(navigator, 'platform', { value }) }, platform)
+    page = await context.newPage()
+    await page.setViewportSize({ width: 1291, height: 768 })
+    tripwire = watchConsole(page)
+    await page.route('https://images.example/original.gif', route => route.fulfill({ body: GIF, contentType: 'image/gif', headers: { 'access-control-allow-origin': '*' } }))
+    await page.context().grantPermissions(['clipboard-read', 'clipboard-write'])
+    await page.goto(scaffold.authenticatedUrl)
+    await page.locator('[data-row-key^="workspace:"]').filter({ hasText: 'Ungrouped' }).click()
+    await page.locator('[data-row-key="session:context-menu-other"]').click()
+    await page.locator('[data-row-key="session:context-menu-other"]').getByText('Menu background', { exact: true }).waitFor()
+    await page.locator('[data-row-key="session:context-menu-first"]').click()
+    await page.getByText('CONTEXT_MENU_READY', { exact: true }).waitFor()
+  })
+  afterAll(async () => { await browser?.close(); await scaffold?.close() })
+
+  it('shares Session entries without selecting the background Session, and dismisses at viewport edges', async () => {
+    onTestFailed(() => saveFailureShot(page, 'context-menus-session'))
+    const background = page.locator('[data-row-key="session:context-menu-other"]')
+    await background.click({ button: 'right' })
+    const menu = page.getByRole('menu')
+    await menu.getByRole('menuitem', { name: /Copy.*[Ii][Dd]/ }).waitFor()
+    const names = await menuLabels(menu)
+    expect(names.slice(0, 5)).toEqual(['Pin session', 'Rename', 'Fork session', 'Copy Session ID', 'Show in folder'])
+    expect(names.at(-1)).toBe('Archive session')
+    expect(await menu.getByRole('menuitem').evaluateAll(rows => rows.every(row => row.querySelector('svg[data-icon]')))).toBe(true)
+    expect(await menu.getByRole('separator').count()).toBe(2)
+    expect(await menu.getByRole('menuitem', { name: 'Archive session', exact: true }).evaluate(row =>
+      getComputedStyle(row.parentElement!.parentElement!).borderTopWidth)).toBe('0px')
+    const alignedSeparators = async () => {
+      const bounds = await menu.evaluate((node) => {
+        const row = node.querySelector<HTMLElement>('[role="menuitem"]')!
+        const rect = row.getBoundingClientRect()
+        const style = getComputedStyle(row)
+        return {
+          left: rect.left + Number.parseFloat(style.paddingLeft),
+          right: rect.right - Number.parseFloat(style.paddingRight),
+          lines: [...node.querySelectorAll('[role="separator"]')].map((line) => {
+            const rect = line.getBoundingClientRect()
+            return { left: rect.left, right: rect.right }
+          }),
+        }
+      })
+      for (const line of bounds.lines) {
+        expect(line.left).toBeCloseTo(bounds.left, 1)
+        expect(line.right).toBeCloseTo(bounds.right, 1)
+      }
+    }
+    await alignedSeparators()
+    await expect(names.join('\n') + '\n').toMatchFileSnapshot(join(import.meta.dirname, 'expected/context-menus/session.txt'))
+    expect(names.some(name => name.includes('Rename'))).toBe(true)
+    expect(await background.getAttribute('aria-selected')).toBe('false')
+    await page.keyboard.press('Escape')
+    await background.getByRole('button', { name: /actions/i }).click()
+    await menu.getByRole('menuitem', { name: /Copy.*[Ii][Dd]/ }).waitFor()
+    expect(await menuLabels(menu)).toEqual(names)
+    await alignedSeparators()
+    await background.getByRole('button', { name: /actions/i }).click()
+    expect(await menu.count()).toBe(0)
+    expect(await background.getAttribute('aria-selected')).toBe('false')
+  })
+
+  it('updates an open Session menu from another window’s shortcut preferences and still renames the captured row', async () => {
+    onTestFailed(() => saveFailureShot(page, 'context-menus-live-shortcuts'))
+    const other = await page.context().newPage()
+    const key = 'dsh.keybindings.v1'
+    const original = await page.evaluate(key => localStorage.getItem(key), key)
+    try {
+      await other.goto(scaffold.authenticatedUrl)
+      await other.getByRole('button', { name: 'Search sessions', exact: true }).waitFor()
+      const background = page.locator('[data-row-key="session:context-menu-other"]')
+      await background.click({ button: 'right' })
+      const item = page.getByRole('menuitem', { name: 'Rename', exact: true })
+      await item.waitFor()
+      const popup = await page.getByRole('menu').elementHandle()
+      const initial = await item.getAttribute('aria-keyshortcuts')
+      await other.evaluate((key) => {
+        localStorage.setItem(key, JSON.stringify({ schemaVersion: 2, profiles: {
+          'web:macos': { 'session.rename': { code: 'Comma', modifiers: ['primary', 'shift'] } },
+          'web:windows': { 'session.rename': { code: 'Comma', modifiers: ['primary', 'shift'] } },
+          'web:linux': { 'session.rename': { code: 'Comma', modifiers: ['primary', 'shift'] } },
+        } }))
+      }, key)
+      await expect.poll(() => item.getAttribute('aria-keyshortcuts')).toBe(platform === 'MacIntel' ? 'Shift+Meta+,' : 'Control+Shift+,')
+      expect(await item.getAttribute('aria-keyshortcuts')).not.toBe(initial)
+      expect(await popup!.evaluate(element => element.isConnected)).toBe(true)
+      expect(await background.getAttribute('aria-selected')).toBe('false')
+      await item.click()
+      const rename = page.getByRole('dialog', { name: 'Rename session', exact: true })
+      expect(await rename.getByLabel('Session name').inputValue()).toBe('Menu background')
+      await rename.getByRole('button', { name: 'Cancel', exact: true }).click()
+      expect(await background.getAttribute('aria-selected')).toBe('false')
+      await background.click({ button: 'right' })
+      await item.waitFor()
+      await other.evaluate((key) => {
+        localStorage.setItem(key, JSON.stringify({ schemaVersion: 2, profiles: {
+          'web:macos': { 'session.rename': null }, 'web:windows': { 'session.rename': null }, 'web:linux': { 'session.rename': null },
+        } }))
+      }, key)
+      await expect.poll(() => item.getAttribute('aria-keyshortcuts')).toBeNull()
+      await other.evaluate(({ key, original }) => {
+        if (original === null) localStorage.removeItem(key)
+        else localStorage.setItem(key, original)
+      }, { key, original })
+      await expect.poll(() => item.getAttribute('aria-keyshortcuts')).toBe(initial)
+      await page.keyboard.press('Escape')
+    } finally {
+      const cancel = page.getByRole('dialog', { name: 'Rename session', exact: true }).getByRole('button', { name: 'Cancel', exact: true })
+      if (await cancel.isVisible()) await cancel.click()
+      await page.keyboard.press('Escape')
+      await other.evaluate(({ key, original }) => {
+        if (original === null) localStorage.removeItem(key)
+        else localStorage.setItem(key, original)
+      }, { key, original })
+      await other.close()
+    }
+  })
+
+  it('shares Workspace menus and keeps folder gestures independent from expansion', async () => {
+    onTestFailed(() => saveFailureShot(page, 'context-menus-workspace'))
+    const workspace = page.locator('[data-row-key^="workspace:"]').filter({ hasText: 'Menu workspace' })
+    const expanded = await workspace.getAttribute('aria-expanded')
+    await workspace.click({ button: 'right' })
+    const menu = page.getByRole('menu')
+    await menu.getByRole('menuitem', { name: 'Rename', exact: true }).waitFor()
+    const names = await menuLabels(menu)
+    expect(names).toEqual(['Rename', 'Show in folder', 'Delete workspace'])
+    expect(await menu.locator('svg[data-icon]').count()).toBe(3)
+    expect(await workspace.getAttribute('aria-expanded')).toBe(expanded)
+    await page.keyboard.press('Escape')
+    await workspace.getByRole('button', { name: /actions/i }).click()
+    await menu.getByRole('menuitem', { name: 'Rename', exact: true }).waitFor()
+    expect(await menuLabels(menu)).toEqual(names)
+    await menu.getByRole('menuitem', { name: 'Rename', exact: true }).click()
+    await page.getByRole('dialog').waitFor()
+    await page.getByRole('button', { name: 'Cancel', exact: true }).click()
+    await workspace.click({ button: 'right' })
+    await menu.getByRole('menuitem', { name: 'Delete workspace', exact: true }).click()
+    await page.getByRole('dialog', { name: 'Delete workspace', exact: true }).waitFor()
+    await page.getByRole('button', { name: 'Cancel', exact: true }).click()
+    await page.locator('[data-sidebar-right-expand]').click()
+    await page.locator('[data-sidebar-right-guide-entry="files"]').click()
+    await page.locator('[data-files-state="tree"]').waitFor()
+    const folder = page.locator('[data-files-entry="directory"]').filter({ hasText: 'folder' }).getByRole('button').first()
+    await folder.click({ button: 'right' })
+    await menu.getByRole('menuitem', { name: 'Copy folder path', exact: true }).waitFor()
+    expect(await menuLabels(menu)).toEqual(['Show in folder', 'Copy folder path'])
+    expect(await folder.getAttribute('aria-expanded')).toBe('false')
+    await menu.getByRole('menuitem', { name: 'Copy folder path', exact: true }).click()
+    expect(await page.evaluate(() => navigator.clipboard.readText())).toBe(join(scaffold.workspaceCwd, 'folder'))
+    await page.getByText('Copied', { exact: true }).waitFor()
+    await expect(names.join('\n') + '\n').toMatchFileSnapshot(join(import.meta.dirname, 'expected/context-menus/workspace.txt'))
+  })
+
+  it('prepares complete menus, anchors above the frame inset, and treats repeated gestures as separate occurrences', async () => {
+    onTestFailed(() => saveFailureShot(page, 'context-menus-gestures'))
+    const file = page.getByRole('button', { name: 'First file', exact: true })
+    await file.focus()
+    await page.keyboard.press('Shift+F10')
+    await page.getByRole('menuitem', { name: 'Copy file path', exact: true }).waitFor()
+    await page.keyboard.press('End')
+    expect(await page.getByRole('menuitem', { name: 'Save as…', exact: true }).count()).toBe(0)
+    expect(await page.getByRole('menuitem', { name: 'Download', exact: true }).evaluate(element => element === document.activeElement)).toBe(true)
+    await page.keyboard.press('ArrowUp')
+    expect(await page.getByRole('menuitem', { name: 'Copy file path', exact: true }).evaluate(element => element === document.activeElement)).toBe(true)
+    await page.keyboard.press('Enter')
+    await expect.poll(() => page.evaluate(() => navigator.clipboard.readText())).toBe(join(scaffold.workspaceCwd, 'first.txt'))
+    expect(await file.evaluate(element => element === document.activeElement)).toBe(true)
+    await page.evaluate(() => {
+      document.documentElement.style.setProperty('--dsh-frame-overlay-top', '100px')
+      const frames: number[] = []
+      const observer = new MutationObserver(() => {
+        for (const menu of document.querySelectorAll('[role="menu"]')) frames.push(menu.querySelectorAll('[role="menuitem"]').length)
+      })
+      observer.observe(document.body, { subtree: true, childList: true })
+      Object.assign(window, { menuObservation: { frames, observer } })
+    })
+    const header = page.locator('[data-session-title]').first()
+    const target = await header.count() > 0 ? header : page.getByText('Menu foreground', { exact: true }).last()
+    const box = (await target.boundingBox())!
+    const point = { x: box.x + box.width / 2, y: box.y + box.height / 2 }
+    await page.mouse.click(point.x, point.y, { button: 'right' })
+    await page.getByRole('menuitem', { name: /Copy.*[Ii][Dd]/ }).waitFor()
+    expect((await page.getByRole('menu').boundingBox())!.y).toBeLessThan(100)
+    await page.mouse.click(point.x + 1, point.y, { button: 'right' })
+    expect(await page.getByRole('menu').count()).toBe(0)
+    await file.click({ button: 'right' })
+    await page.getByRole('menuitem', { name: 'Copy file path', exact: true }).waitFor()
+    const previous = await page.getByRole('menu').elementHandle()
+    await page.getByRole('link', { name: 'Website', exact: true }).click({ button: 'right' })
+    await page.getByRole('menuitem', { name: 'Copy link address', exact: true }).waitFor()
+    expect(await previous!.evaluate(element => element.isConnected)).toBe(false)
+    await page.keyboard.press('Escape')
+    const counts = await page.evaluate(() => {
+      const observed = (window as Window & { menuObservation?: { frames: number[]; observer: MutationObserver } }).menuObservation
+      if (observed === undefined) throw new Error('Menu observer not installed')
+      observed.observer.disconnect()
+      document.documentElement.style.removeProperty('--dsh-frame-overlay-top')
+      return observed.frames
+    })
+    expect(counts.length).toBeGreaterThan(0)
+    expect(counts.every(count => count > 0)).toBe(true)
+  })
+
+  it('preserves file line navigation, URL text, image format, and existing tab close actions', async () => {
+    onTestFailed(() => saveFailureShot(page, 'context-menus-content'))
+    const file = page.getByRole('button', { name: 'First file', exact: true })
+    await file.click({ button: 'right' })
+    await page.getByRole('menuitem', { name: 'Download', exact: true }).waitFor()
+    expect(await page.getByRole('menuitem', { name: 'Save as…', exact: true }).count()).toBe(0)
+    const fileDownloadPromise = page.waitForEvent('download')
+    await page.getByRole('menuitem', { name: 'Download', exact: true }).click()
+    const fileDownload = await fileDownloadPromise
+    expect(fileDownload.suggestedFilename()).toBe('first.txt')
+    expect(await readFile(await fileDownload.path(), 'utf8')).toBe('FIRST\nSECOND\nTHIRD\n')
+    const started = page.getByRole('alert').filter({ hasText: 'Download started' })
+    await started.waitFor()
+    expect(await started.getByRole('button', { name: /Show in/ }).count()).toBe(0)
+    await file.click({ button: 'right' })
+    await page.getByRole('menuitem', { name: 'Open in sidebar', exact: true }).click()
+    await page.locator('[data-document-preview]').getByText('SECOND', { exact: true }).waitFor()
+    await page.getByRole('link', { name: 'Website', exact: true }).click({ button: 'right' })
+    await page.getByRole('menuitem', { name: 'Copy link address', exact: true }).click()
+    expect(await page.evaluate(() => navigator.clipboard.readText())).toBe('https://example.com/path?q=1#fragment')
+    await page.getByRole('img', { name: 'Original', exact: true }).click({ button: 'right' })
+    await page.getByRole('menuitem', { name: 'Download', exact: true }).waitFor()
+    await expect((await menuLabels(page.getByRole('menu'))).join('\n') + '\n')
+      .toMatchFileSnapshot(join(import.meta.dirname, 'expected/context-menus/image.txt'))
+    expect(await page.getByRole('menuitem', { name: 'Show in folder', exact: true }).count()).toBe(1)
+    const downloadPromise = page.waitForEvent('download')
+    await page.getByRole('menuitem', { name: 'Download', exact: true }).click()
+    const download = await downloadPromise
+    expect(download.suggestedFilename().endsWith('.gif')).toBe(true)
+    await page.getByRole('alert').filter({ hasText: 'Download started' }).waitFor()
+    const path = await download.path()
+    expect(path).not.toBeNull()
+    if (path === null) throw new Error('Browser download unavailable')
+    expect(await readFile(path)).toEqual(GIF)
+    await page.getByRole('img', { name: 'Original', exact: true }).click({ button: 'right' })
+    await page.getByRole('menuitem', { name: 'Copy image', exact: true }).click()
+    await page.getByText('Copied', { exact: true }).waitFor()
+    expect(await page.evaluate(async () => (await navigator.clipboard.read()).some(item => item.types.includes('image/png')))).toBe(true)
+    await page.getByRole('img', { name: 'Remote', exact: true }).click({ button: 'right' })
+    expect(await page.getByRole('menuitem', { name: 'Show in folder', exact: true }).isDisabled()).toBe(true)
+    const remoteDownloadPromise = page.waitForEvent('download')
+    await page.getByRole('menuitem', { name: 'Download', exact: true }).click()
+    const remoteDownload = await remoteDownloadPromise
+    expect(await readFile((await remoteDownload.path()))).toEqual(GIF)
+    await page.getByRole('img', { name: 'Remote', exact: true }).click({ button: 'right' })
+    await page.getByRole('menuitem', { name: 'Copy image', exact: true }).click()
+    await page.getByText('Copied', { exact: true }).waitFor()
+    expect(await page.evaluate(async () => (await navigator.clipboard.read()).some(item => item.types.includes('image/png')))).toBe(true)
+    await page.getByRole('button', { name: 'Second file', exact: true }).click()
+    await page.locator('[data-document-preview]').getByText('SECOND FILE', { exact: true }).waitFor()
+    const firstTab = page.locator('[role="tab"]').filter({ hasText: 'first.txt' }).first()
+    await firstTab.click({ button: 'right' })
+    await page.getByRole('menuitem', { name: 'Close', exact: true }).waitFor()
+    expect(await page.getByRole('menuitem', { name: 'Close', exact: true }).locator('svg[data-icon]').count()).toBe(1)
+    await page.getByRole('menuitem', { name: 'Close', exact: true }).click()
+    expect(await firstTab.count()).toBe(0)
+    expect(await page.locator('[data-document-preview]').getByText('SECOND FILE', { exact: true }).count()).toBe(1)
+    expect(tripwire.pageErrors).toEqual([])
+  })
+  it('keeps original preview open when dismissing its menu and fits both themes at the viewport edge', async () => {
+    onTestFailed(() => saveFailureShot(page, 'context-menus-preview'))
+    await page.getByRole('button', { name: 'View full image: Original', exact: true }).click()
+    const preview = page.getByRole('dialog')
+    await preview.waitFor()
+    for (const colorScheme of ['light', 'dark'] as const) {
+      await page.emulateMedia({ colorScheme })
+      await preview.getByRole('img').evaluate(element => element.dispatchEvent(new MouseEvent('contextmenu', { clientX: 1270, clientY: 735, bubbles: true })))
+      const menu = page.getByRole('menu')
+      await menu.getByRole('menuitem', { name: 'Copy image', exact: true }).waitFor()
+      expect(await menu.getByRole('menuitem').evaluateAll(rows => rows.every(row => row.querySelector('svg[data-icon]')))).toBe(true)
+      const box = await menu.boundingBox()
+      expect(box).not.toBeNull()
+      expect(box!.x).toBeGreaterThan(1000)
+      expect(box!.y).toBeGreaterThan(500)
+      expect(box!.x + box!.width).toBeLessThanOrEqual(1291)
+      expect(box!.y + box!.height).toBeLessThanOrEqual(768)
+      await saveFailureShot(page, `context-menus-${colorScheme}`)
+      await page.keyboard.press('Escape')
+      expect(await menu.count()).toBe(0)
+      expect(await preview.count()).toBe(1)
+    }
+    await page.keyboard.press('Escape')
+    expect(await preview.count()).toBe(0)
+    expect(tripwire.pageErrors).toEqual([])
+  })
+
+  it('offers completed Desktop destinations as toast text actions without enabling remote-image menu reveal', async () => {
+    const native = await browser.newPage({ viewport: { width: 1291, height: 768 }, locale: 'en-US' })
+    const opened = vi.spyOn(scaffold.ctx.sessionController, 'openWorkspacePath').mockResolvedValue({ opened: true })
+    try {
+      const destinations = { download: join(scaffold.workspaceCwd, 'downloaded.gif'), saveAs: join(scaffold.workspaceCwd, 'saved.txt') }
+      await native.addInitScript(({ platform, destinations }) => {
+        Object.defineProperty(navigator, 'platform', { value: platform })
+        Object.defineProperty(globalThis, 'dshDesktop', { value: { protocolVersion: 1, fileActions: {
+          save: async ({ mode }: { mode: 'download' | 'saveAs' }) => ({ status: 'saved', path: destinations[mode] }),
+        } } })
+      }, { platform, destinations })
+      await native.route('https://images.example/original.gif', route => route.fulfill({ body: GIF, contentType: 'image/gif' }))
+      await native.goto(scaffold.authenticatedUrl)
+      await native.evaluate((platform) => {
+        document.documentElement.dataset.platform = platform === 'MacIntel' ? 'darwin' : platform === 'Win32' ? 'win32' : 'linux'
+      }, platform)
+      const group = native.locator('[data-row-key^="workspace:"]').filter({ hasText: 'Ungrouped' })
+      if (await group.getAttribute('aria-expanded') !== 'true') await group.click()
+      await native.locator('[data-row-key="session:context-menu-first"]').click()
+      await native.getByText('CONTEXT_MENU_READY', { exact: true }).waitFor()
+      for (const [mode, label, text, theme] of [
+        ['download', 'Download', 'Download complete', 'light'],
+        ['saveAs', 'Save as…', 'Saved', 'dark'],
+      ] as const) {
+        await native.emulateMedia({ colorScheme: theme })
+        const trigger = mode === 'download'
+          ? native.getByRole('img', { name: 'Remote', exact: true })
+          : native.getByRole('button', { name: 'First file', exact: true })
+        await trigger.click({ button: 'right' })
+        await native.getByRole('menuitem', { name: label, exact: true }).click()
+        const notice = native.getByRole('alert').filter({ hasText: text })
+        const action = notice.getByRole('button', { name: platform === 'MacIntel' ? 'Show in Finder' : 'Show in folder', exact: true })
+        await action.click()
+        await notice.waitFor({ state: 'hidden' })
+        await expect.poll(() => opened.mock.calls.at(-1)?.[0]).toEqual({ path: destinations[mode], action: 'reveal' })
+      }
+      expect(opened).toHaveBeenCalledTimes(2)
+      await native.getByRole('img', { name: 'Remote', exact: true }).click({ button: 'right' })
+      const reveal = native.getByRole('menuitem', { name: 'Show in folder', exact: true })
+      await reveal.waitFor()
+      expect(await reveal.isDisabled()).toBe(true)
+    } finally {
+      await native.close()
+      opened.mockRestore()
+    }
+  })
+})
diff --git a/apps/web/tests/cua-optin.e2e.ts b/apps/web/tests/cua-optin.e2e.ts
index a9ddcde869..c5900519c6 100644
--- a/apps/web/tests/cua-optin.e2e.ts
+++ b/apps/web/tests/cua-optin.e2e.ts
@@ -63,9 +63,9 @@ it.skipIf(process.platform !== 'darwin').each([
       const dialog = page.getByRole('dialog', { name: '添加插件', exact: true })
       await dialog.getByRole('textbox', { name: '包名或地址', exact: true }).fill('@deepseek-ai/dsh-cua-bundle')
       await dialog.getByRole('button', { name: '安装', exact: true }).click()
-      const ready = page.getByRole('dialog', { name: '插件已随 DSH 提供', exact: true })
+      const ready = page.getByRole('dialog', { name: '已安装', exact: true })
       await ready.waitFor()
-      expect(await ready.getByText('无需下载，启用即可使用', { exact: true }).count()).toBe(1)
+      expect(await ready.getByText('无需下载，启用即可使用', { exact: true }).count()).toBe(0)
       return ready.getByRole('button', { name: '立即启用', exact: true })
     }
     const enableNow = await offerCua()
@@ -199,8 +199,7 @@ it.skipIf(process.platform !== 'darwin').each([
     const program = 'globalThis.counter = (globalThis.counter ?? 0) + 1'
     expect((await runtime.run(runtime.resolve({ program, bindings: [], stateOwner: owner }))).value).toBe(1)
     await toggle.click()
-    await toggle.waitFor({ state: 'hidden' })
-    await card.waitFor({ state: 'hidden' })
+    await toggle.and(page.locator('[aria-checked="false"]')).waitFor({ state: 'visible' })
     expect(scaffold.ctx.get('computerUse')).toBeUndefined()
     expect(runtimeFiber() === persistentRuntimeFiber).toBe(true)
     expect(scaffold.ctx.agentPresets.defaultId).toBe(initialDefault)
@@ -211,7 +210,7 @@ it.skipIf(process.platform !== 'darwin').each([
     }
     expect((await runtime.run(runtime.resolve({ program, bindings: [], stateOwner: owner }))).value).toBe(2)
     expect(await readFile(settingsPath, 'utf8')).toBe(saved)
-    await (await offerCua()).click()
+    await toggle.click()
     await toggle.and(page.locator('[aria-checked="true"]')).waitFor({ state: 'visible' })
     await setup.waitFor()
     expect(await setup.getByText('Computer Use 插件已开启，但暂时无法检测系统权限。请前往插件详情页查看原因并重试。', { exact: true }).count()).toBe(1)
@@ -249,9 +248,8 @@ it.skipIf(process.platform !== 'darwin').each([
       expect.objectContaining({ id: 'agent-preset-registry', config: { default: 'standard', selectedDefault: 'ptc' } }),
     ]))
     await toggle.click()
-    await toggle.waitFor({ state: 'hidden' })
-    await card.waitFor({ state: 'hidden' })
-    await (await offerCua()).click()
+    await toggle.and(page.locator('[aria-checked="false"]')).waitFor({ state: 'visible' })
+    await toggle.click()
     await toggle.and(page.locator('[aria-checked="true"]')).waitFor({ state: 'visible' })
     await setup.waitFor()
     expect(await setup.getByText('Computer Use 插件已开启，但暂时无法检测系统权限。请前往插件详情页查看原因并重试。', { exact: true }).count()).toBe(1)
diff --git a/apps/web/tests/cua-permissions.e2e.ts b/apps/web/tests/cua-permissions.e2e.ts
index 4835557ce8..72afb6648d 100644
--- a/apps/web/tests/cua-permissions.e2e.ts
+++ b/apps/web/tests/cua-permissions.e2e.ts
@@ -29,7 +29,7 @@ it.skipIf(process.platform !== 'darwin')('keeps system requests pending until fr
   const helper = await installNativeFixture(root)
   resources.closeFixture = await startFixtureHost(helper)
   const state = join(root, 'permissions.json'), audit = join(root, 'helper-events.jsonl')
-  const launchApplication = { name: 'Visual Studio Code.app', path: '/Applications/Visual Studio Code.app',
+  const launchApplication = { name: 'DSH Computer Use.app', path: '/Applications/DSH Computer Use.app',
     icon: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAACXBIWXMAAAPoAAAD6AG1e1JrAAAADElEQVQImWNgZGIGAAAOAAeCcsnOAAAAAElFTkSuQmCC' }
   await writeFile(state, JSON.stringify({ accessibility: false, screenRecording: false, launchApplication }))
   await writeFile(join(root, 'observe-helper'), '')
@@ -89,10 +89,10 @@ it.skipIf(process.platform !== 'darwin')('keeps system requests pending until fr
   expect(await panel.getByRole('region', { name: 'Manage applications computer use can access', exact: true }).count()).toBe(1)
   await expect.poll(() => panel.locator('li img').evaluate((image: HTMLImageElement) => image.naturalWidth)).toBe(1)
   expect(await panel.getByText('/fixture/app', { exact: true }).count()).toBe(0)
-  expect(await accessibility.getByText('Visual Studio Code.app', { exact: true }).count()).toBe(1)
+  expect(await accessibility.getByText('DSH Computer Use.app', { exact: true }).count()).toBe(1)
   expect(await accessibility.textContent()).toContain('In System Settings, allow')
   expect(await accessibility.textContent()).toContain('to read interface controls, click, and type.')
-  expect(await panel.getByRole('group', { name: 'Screen Recording', exact: true }).getByText('Visual Studio Code.app', { exact: true }).count()).toBe(1)
+  expect(await panel.getByRole('group', { name: 'Screen Recording', exact: true }).getByText('DSH Computer Use.app', { exact: true }).count()).toBe(1)
   await expect.poll(() => accessibility.locator('img').evaluate((image: HTMLImageElement) => image.naturalWidth)).toBe(1)
   await expect.poll(() => panel.getAttribute('aria-busy')).toBe('false')
   await compareOrRefreshGolden(expected, await captureStableAria(page, '[data-cua-settings]', scaffold.workspaceCwd), webSnapshotMode())
diff --git a/apps/web/tests/default-model.e2e.ts b/apps/web/tests/default-model.e2e.ts
index 9625333287..fa6c518add 100644
--- a/apps/web/tests/default-model.e2e.ts
+++ b/apps/web/tests/default-model.e2e.ts
@@ -563,7 +563,7 @@ describe('web e2e: the composer model switch is the default for later sessions',
     for (const palette of headingPalettes) {
       expect(palette.headingFills, `${palette.platform}, dark=${String(palette.dark)}`)
         .toEqual(['rgba(0, 0, 0, 0)'])
-      expect(palette.menuFill).toBe(palette.dark ? 'rgba(67, 69, 74, 0.45)' : 'rgba(248, 249, 250, 0.58)')
+      expect(palette.menuFill).toBe(palette.dark ? 'rgba(48, 49, 54, 0.64)' : 'rgba(252, 253, 254, 0.7)')
       expect(palette.searchBorder).toBe('rgba(0, 0, 0, 0)')
       expect(palette.positions).toEqual(['sticky'])
       expect(palette.headingRadii).toEqual([palette.platform === 'darwin' ? '0px' : palette.optionRadius])
diff --git a/apps/web/tests/details-session-lifecycle.e2e.ts b/apps/web/tests/details-session-lifecycle.e2e.ts
index 68dd75f3d8..84a34241f8 100644
--- a/apps/web/tests/details-session-lifecycle.e2e.ts
+++ b/apps/web/tests/details-session-lifecycle.e2e.ts
@@ -188,7 +188,7 @@ describe.skipIf(MODE === 'record')('web e2e: details panel follows the current S
       await blankColumn.locator('[data-sidebar-right-toggle]').click()
       await blankColumn.locator('[data-dockkit-pane]').first().waitFor({ state: 'hidden' })
       await page.setViewportSize({ width: 767, height: blankViewport.height })
-      await expect.poll(() => columns(page)).toEqual([56, 711, 0])
+      await expect.poll(() => columns(page)).toEqual([0, 767, 0])
       await page.locator('[data-sidebar-right-expand]').click()
       // The fullscreen shell keeps its viewport box while its docked content closes.
       await expect.poll(() => blankColumn.locator('[data-sidebar-right-open]').count()).toBe(1)
@@ -425,7 +425,7 @@ describe.skipIf(MODE === 'record')('web e2e: details panel follows the current S
       await expect.poll(() => columns(page)).toEqual([420, viewport.width - 420 - normalWidth, normalWidth])
       await page.setViewportSize({ width: 767, height: viewport.height })
       await expect.poll(() => panel.boundingBox()).toEqual({ x: 0, y: 0, width: 767, height: viewport.height })
-      await expect.poll(() => columns(page)).toEqual([56, 711, 0])
+      await expect.poll(() => columns(page)).toEqual([0, 767, 0])
       expect(await sidebarSnapshot(page)).toMatchObject({ mode: 'fullscreen', resizeHandleWidth: 0, coversViewport: true })
       await checkpoint('A automatic fullscreen at 767px')
       await column.locator('[data-sidebar-right-mode="push"]').click()
diff --git a/apps/web/tests/document-preview.e2e.ts b/apps/web/tests/document-preview.e2e.ts
index 79a5ed4bdb..a3d2eb21e6 100644
--- a/apps/web/tests/document-preview.e2e.ts
+++ b/apps/web/tests/document-preview.e2e.ts
@@ -714,7 +714,7 @@ else process.exit(1);
     const initialFilesClose = await filesTab.locator('[data-dockkit-tab-close]').count()
     expect(initialFilesClose).toBe(1)
     await filesTab.click({ button: 'right' })
-    expect(await page.locator('[data-dockkit-tab-menu]:visible').count()).toBe(1)
+    await page.locator('[data-context-menu][role="menu"]').waitFor()
     await page.keyboard.press('Escape')
     await addTab.waitFor({ state: 'visible' })
     const initialAdd = await addTab.count()
diff --git a/apps/web/tests/expected/client-plugin-live/session-actions.expected.md b/apps/web/tests/expected/client-plugin-live/session-actions.expected.md
index 51df861f77..93f241e0fc 100644
--- a/apps/web/tests/expected/client-plugin-live/session-actions.expected.md
+++ b/apps/web/tests/expected/client-plugin-live/session-actions.expected.md
@@ -2,8 +2,10 @@
   - menuitem "Pin session"
   - menuitem "Rename"
   - menuitem "Fork session"
-  - menuitem "Archive session"
+  - separator
   - menuitem "Copy Session ID"
   - separator
   - menuitem "Export session"
   - menuitem "Copy session ID"
+  - separator
+  - menuitem "Archive session"
diff --git a/apps/web/tests/expected/client-plugin-live/session-trailing.expected.json b/apps/web/tests/expected/client-plugin-live/session-trailing.expected.json
index 8b5c4cb664..83f9ecd3fb 100644
--- a/apps/web/tests/expected/client-plugin-live/session-trailing.expected.json
+++ b/apps/web/tests/expected/client-plugin-live/session-trailing.expected.json
@@ -86,7 +86,7 @@
       "Fixture badge",
       "Fixture section"
     ],
-    "time": true,
+    "time": false,
     "pinned": false,
     "actions": true
   },
@@ -96,7 +96,7 @@
       "Fixture badge",
       "Fixture section"
     ],
-    "time": true,
+    "time": false,
     "pinned": false,
     "actions": true
   },
@@ -106,7 +106,7 @@
       "Fixture badge",
       "Fixture section"
     ],
-    "time": true,
+    "time": false,
     "pinned": false,
     "actions": true
   },
@@ -116,8 +116,8 @@
       "Fixture badge",
       "Fixture section"
     ],
-    "time": true,
-    "pinned": true,
+    "time": false,
+    "pinned": false,
     "actions": true
   },
   {
@@ -136,7 +136,7 @@
       "Fixture badge",
       "Fixture section"
     ],
-    "time": true,
+    "time": false,
     "pinned": false,
     "actions": true
   }
diff --git a/apps/web/tests/expected/context-menus/image.txt b/apps/web/tests/expected/context-menus/image.txt
new file mode 100644
index 0000000000..a8090be657
--- /dev/null
+++ b/apps/web/tests/expected/context-menus/image.txt
@@ -0,0 +1,3 @@
+Copy image
+Download
+Show in folder
diff --git a/apps/web/tests/expected/context-menus/session.txt b/apps/web/tests/expected/context-menus/session.txt
new file mode 100644
index 0000000000..5468d20e51
--- /dev/null
+++ b/apps/web/tests/expected/context-menus/session.txt
@@ -0,0 +1,6 @@
+Pin session
+Rename
+Fork session
+Copy Session ID
+Show in folder
+Archive session
diff --git a/apps/web/tests/expected/context-menus/workspace.txt b/apps/web/tests/expected/context-menus/workspace.txt
new file mode 100644
index 0000000000..93c401728b
--- /dev/null
+++ b/apps/web/tests/expected/context-menus/workspace.txt
@@ -0,0 +1,3 @@
+Rename
+Show in folder
+Delete workspace
diff --git a/apps/web/tests/expected/cua-permissions/missing.expected.md b/apps/web/tests/expected/cua-permissions/missing.expected.md
index cb4ade57ac..3b32eb2418 100644
--- a/apps/web/tests/expected/cua-permissions/missing.expected.md
+++ b/apps/web/tests/expected/cua-permissions/missing.expected.md
@@ -10,11 +10,11 @@
     - button "Use persistent mode"
   - group "Accessibility":
     - strong: Accessibility
-    - paragraph: In System Settings, allow Visual Studio Code.app to read interface controls, click, and type.
+    - paragraph: In System Settings, allow DSH Computer Use.app to read interface controls, click, and type.
     - button "Request permission"
   - group "Screen Recording":
     - strong: Screen Recording
-    - paragraph: In System Settings, allow Visual Studio Code.app to capture application windows.
+    - paragraph: In System Settings, allow DSH Computer Use.app to capture application windows.
     - button "Request permission"
   - paragraph: Manage permissions in System Settings for the application named by macOS.
 - region "Manage applications computer use can access":
diff --git a/apps/web/tests/expected/forge-panel/branch-details.expected.md b/apps/web/tests/expected/forge-panel/branch-details.expected.md
new file mode 100644
index 0000000000..8c348d423a
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/branch-details.expected.md
@@ -0,0 +1 @@
+- 'tooltip "Current branch: feature/a-long-current-branch-name-for-mobile-review"'
diff --git a/apps/web/tests/expected/forge-panel/changes-view.expected.md b/apps/web/tests/expected/forge-panel/changes-view.expected.md
index f8c94d3817..b6c825a833 100644
--- a/apps/web/tests/expected/forge-panel/changes-view.expected.md
+++ b/apps/web/tests/expected/forge-panel/changes-view.expected.md
@@ -1,5 +1,6 @@
 - img "变更请求状态：需要处理"
 - text: "Add the pull request panel #7"
+- button "提交评审"
 - button "在浏览器中打开"
 - button "全部 2 个文件"
 - text: +4 −2
@@ -7,16 +8,64 @@
 - button "全部折叠"
 - button "左右对比" [pressed]
 - button "自动换行" [pressed]
-- button "收起 panel.ts" [expanded]
-- 'button "复制路径: src/panel.ts"': src/panel.ts
-- text: +2 −2
-- button "panel.ts 的更多操作"
-- text: 1 export const n1 = 1 1 export const n1 = 1 2 export const n2 = 2 2 export const n2 = 'two' 3 export const n3 = 3 3 export const n3 = 3 4 export const n4 = 4 4 export const n4 = 4 5 export const n5 = 5 5 export const n5 = 5
-- button "6 行未变更"
-- text: 12 export const n12 = 12 12 export const n12 = 12 13 export const n13 = 13 13 export const n13 = 13 14 export const n14 = 14 14 export const n14 = 14 15 export const n15 = 15 15 export const n15 = 'fifteen' 16 export const n16 = 16 16 export const n16 = 16 17 export const n17 = 17 17 export const n17 = 17 18 export const n18 = 18 18 export const n18 = 18
-- button "其余未变更的行"
-- button "收起 panel.md" [expanded]
-- 'button "复制路径: docs/panel.md"': docs/panel.md
-- text: 新文件 +2 −0
-- button "panel.md 的更多操作"
-- text: "1 + # Panel 2 + Shows the change requests of a Session."
+- region "全部 2 个文件":
+  - button "收起 panel.ts" [expanded]
+  - text: src/panel.ts +2 −2
+  - button "panel.ts 的更多操作"
+  - button "选择第 L1 行": "1"
+  - text: export const n1 = 1
+  - button "选择第 R1 行": "1"
+  - text: export const n1 = 1
+  - button "选择第 L2 行": "2"
+  - text: export const n2 = 2
+  - button "选择第 R2 行": "2"
+  - text: export const n2 = 'two'
+  - button "选择第 L3 行": "3"
+  - text: export const n3 = 3
+  - button "选择第 R3 行": "3"
+  - text: export const n3 = 3
+  - button "选择第 L4 行": "4"
+  - text: export const n4 = 4
+  - button "选择第 R4 行": "4"
+  - text: export const n4 = 4
+  - button "选择第 L5 行": "5"
+  - text: export const n5 = 5
+  - button "选择第 R5 行": "5"
+  - text: export const n5 = 5
+  - button "6 行未变更"
+  - button "选择第 L12 行": "12"
+  - text: export const n12 = 12
+  - button "选择第 R12 行": "12"
+  - text: export const n12 = 12
+  - button "选择第 L13 行": "13"
+  - text: export const n13 = 13
+  - button "选择第 R13 行": "13"
+  - text: export const n13 = 13
+  - button "选择第 L14 行": "14"
+  - text: export const n14 = 14
+  - button "选择第 R14 行": "14"
+  - text: export const n14 = 14
+  - button "选择第 L15 行": "15"
+  - text: export const n15 = 15
+  - button "选择第 R15 行": "15"
+  - text: export const n15 = 'fifteen'
+  - button "选择第 L16 行": "16"
+  - text: export const n16 = 16
+  - button "选择第 R16 行": "16"
+  - text: export const n16 = 16
+  - button "选择第 L17 行": "17"
+  - text: export const n17 = 17
+  - button "选择第 R17 行": "17"
+  - text: export const n17 = 17
+  - button "选择第 L18 行": "18"
+  - text: export const n18 = 18
+  - button "选择第 R18 行": "18"
+  - text: export const n18 = 18
+  - button "其余未变更的行"
+  - button "收起 panel.md" [expanded]
+  - text: docs/panel.md 新文件 +2 −0
+  - button "panel.md 的更多操作"
+  - button "选择第 R1 行": "1"
+  - text: "+ # Panel"
+  - button "选择第 R2 行": "2"
+  - text: + Shows the change requests of a Session.
diff --git a/apps/web/tests/expected/forge-panel/file-tree-toggle.expected.md b/apps/web/tests/expected/forge-panel/file-tree-toggle.expected.md
new file mode 100644
index 0000000000..5873dec5ae
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/file-tree-toggle.expected.md
@@ -0,0 +1,77 @@
+- img "变更请求状态：需要处理"
+- text: "Add the pull request panel #7"
+- button "提交评审"
+- button "在浏览器中打开"
+- button "全部 2 个文件"
+- text: +4 −2
+- button "刷新变更"
+- button "全部折叠"
+- button "左右对比" [pressed]
+- button "自动换行" [pressed]
+- button "将文件树移到右侧" [expanded]
+- region "全部 2 个文件":
+  - button "收起 panel.ts" [expanded]
+  - text: src/panel.ts +2 −2
+  - button "panel.ts 的更多操作"
+  - button "选择第 L1 行": "1"
+  - text: export const n1 = 1
+  - button "选择第 R1 行": "1"
+  - text: export const n1 = 1
+  - button "选择第 L2 行": "2"
+  - text: export const n2 = 2
+  - button "选择第 R2 行": "2"
+  - text: export const n2 = 'two'
+  - button "选择第 L3 行": "3"
+  - text: export const n3 = 3
+  - button "选择第 R3 行": "3"
+  - text: export const n3 = 3
+  - button "选择第 L4 行": "4"
+  - text: export const n4 = 4
+  - button "选择第 R4 行": "4"
+  - text: export const n4 = 4
+  - button "选择第 L5 行": "5"
+  - text: export const n5 = 5
+  - button "选择第 R5 行": "5"
+  - text: export const n5 = 5
+  - button "6 行未变更"
+  - button "选择第 L12 行": "12"
+  - text: export const n12 = 12
+  - button "选择第 R12 行": "12"
+  - text: export const n12 = 12
+  - button "选择第 L13 行": "13"
+  - text: export const n13 = 13
+  - button "选择第 R13 行": "13"
+  - text: export const n13 = 13
+  - button "选择第 L14 行": "14"
+  - text: export const n14 = 14
+  - button "选择第 R14 行": "14"
+  - text: export const n14 = 14
+  - button "选择第 L15 行": "15"
+  - text: export const n15 = 15
+  - button "选择第 R15 行": "15"
+  - text: export const n15 = 'fifteen'
+  - button "选择第 L16 行": "16"
+  - text: export const n16 = 16
+  - button "选择第 R16 行": "16"
+  - text: export const n16 = 16
+  - button "选择第 L17 行": "17"
+  - text: export const n17 = 17
+  - button "选择第 R17 行": "17"
+  - text: export const n17 = 17
+  - button "选择第 L18 行": "18"
+  - text: export const n18 = 18
+  - button "选择第 R18 行": "18"
+  - text: export const n18 = 18
+  - button "其余未变更的行"
+  - button "收起 panel.md" [expanded]
+  - text: docs/panel.md 新文件 +2 −0
+  - button "panel.md 的更多操作"
+  - button "选择第 R1 行": "1"
+  - text: "+ # Panel"
+  - button "选择第 R2 行": "2"
+  - text: + Shows the change requests of a Session.
+- separator "调整文件树宽度"
+- navigation "全部 2 个文件":
+  - textbox "筛选文件…": src
+  - button "src" [expanded]
+  - button "src/panel.ts": panel.ts +2 −2
diff --git a/apps/web/tests/expected/forge-panel/filter-config-failed.expected.md b/apps/web/tests/expected/forge-panel/filter-config-failed.expected.md
new file mode 100644
index 0000000000..eef3d4c6df
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/filter-config-failed.expected.md
@@ -0,0 +1,11 @@
+- text: 与 origin/main 比较，包含未提交的修改
+- button "创建变更请求"
+- button "分支"
+- button "全部 0 个文件" [disabled]
+- button "刷新变更"
+- button "全部展开" [disabled]
+- button "左右对比" [pressed]
+- button "自动换行" [pressed]
+- status:
+  - text: 无法完整读取 Git 过滤器配置，尚未执行比较。请检查 Git 配置和读取上限后重试
+  - button "重试"
diff --git a/apps/web/tests/expected/forge-panel/full-access.expected.md b/apps/web/tests/expected/forge-panel/full-access.expected.md
new file mode 100644
index 0000000000..3f45ecb592
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/full-access.expected.md
@@ -0,0 +1,4 @@
+- button "本地变更"
+- text: HEAD → origin/main
+- button "查看本会话的变更：1 个文件，新增 1 行，删除 0 行": +1 −0 1 个文件
+- button "创建变更请求"
diff --git a/apps/web/tests/expected/forge-panel/local-card.expected.md b/apps/web/tests/expected/forge-panel/local-card.expected.md
new file mode 100644
index 0000000000..24058934d3
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/local-card.expected.md
@@ -0,0 +1,4 @@
+- button "Local changes"
+- text: HEAD → origin/main
+- 'button "View the changes of this Session: 60 files, 60 lines added, 0 lines deleted"': +60 −0 60 files
+- button "Create change request"
diff --git a/apps/web/tests/expected/forge-panel/panel.expected.md b/apps/web/tests/expected/forge-panel/panel.expected.md
index 3450262cd7..f71db0bd64 100644
--- a/apps/web/tests/expected/forge-panel/panel.expected.md
+++ b/apps/web/tests/expected/forge-panel/panel.expected.md
@@ -12,6 +12,6 @@
     - button "复制变更请求链接"
     - 'button "从本会话移除 #7"'
     - 'button "收起 #7" [expanded]'
-    - button "检查 1 项失败 · 1 项通过"
+    - button "检查 已加载 1 项检查，仍有更多"
     - text: 评审 等待评审 · 1 条未解决讨论 合并 无冲突
     - 'button "查看 #7 的变更：新增 128 行，删除 14 行"': 变更 +128 −14
diff --git a/apps/web/tests/expected/forge-panel/reference.expected.md b/apps/web/tests/expected/forge-panel/reference.expected.md
index cc5f2e87f6..4a34c8f7c9 100644
--- a/apps/web/tests/expected/forge-panel/reference.expected.md
+++ b/apps/web/tests/expected/forge-panel/reference.expected.md
@@ -7,6 +7,6 @@
   - button "复制变更请求链接"
   - 'button "从本会话移除 #7"'
   - 'button "收起 #7" [expanded]'
-  - button "检查 1 项失败 · 1 项通过"
+  - button "检查 已加载 1 项检查，仍有更多"
   - text: 评审 等待评审 · 1 条未解决讨论 合并 无冲突
   - 'button "查看 #7 的变更：新增 128 行，删除 14 行"': 变更 +128 −14
diff --git a/apps/web/tests/expected/forge-panel/review-composer.expected.md b/apps/web/tests/expected/forge-panel/review-composer.expected.md
new file mode 100644
index 0000000000..d2c1d4682d
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/review-composer.expected.md
@@ -0,0 +1,7 @@
+- region "评论 R2–4":
+  - text: 评论 R2–4
+  - textbox "留下评论…": 请核对边界条件
+  - button "取消"
+  - button "添加到输入框"
+  - button "开始评审"
+  - button "GitHub 评论选项"
diff --git a/apps/web/tests/expected/forge-panel/review-guide.expected.md b/apps/web/tests/expected/forge-panel/review-guide.expected.md
new file mode 100644
index 0000000000..a56f8cd077
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/review-guide.expected.md
@@ -0,0 +1 @@
+- button "代码审查和变更 查看代码变更与本会话的变更请求"
diff --git a/apps/web/tests/expected/forge-panel/review-message.expected.md b/apps/web/tests/expected/forge-panel/review-message.expected.md
new file mode 100644
index 0000000000..c454458d69
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/review-message.expected.md
@@ -0,0 +1,25 @@
+> ## User Comment 2
+> File: src/extra.ts
+> Side: R
+> Lines: 1
+> Source: Local (branch)
+> Diff hunk:
+> ```diff
+> @@ -0,0 +1,1 @@
+> +export const extra = 1
+> ```
+> Comment:
+> 请检查这项修改
+
+> ## User Comment 1
+> File: src/app.ts
+> Side: R
+> Lines: 1
+> Source: Local (branch)
+> Diff hunk:
+> ```diff
+> @@ -0,0 +1,1 @@
+> +export const app = 1
+> ```
+> Comment:
+> 请解释这行代码
diff --git a/apps/web/tests/expected/forge-panel/review-quotes.expected.md b/apps/web/tests/expected/forge-panel/review-quotes.expected.md
new file mode 100644
index 0000000000..602d647831
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/review-quotes.expected.md
@@ -0,0 +1,6 @@
+- textbox "发消息或创建任务, / 调用指令, @ 文件或对话":
+  - paragraph:
+    - button "移除引用"
+    - text: "## User Comment 2 File: src/extra.ts Side: R Lines: 1 Source: Local (branch) Diff hunk: ```diff @@ -0,0 +1,1 @@ +export const extra = 1 ``` Comment: 请检查这项修改"
+    - button "移除引用"
+    - text: "## User Comment 1 File: src/app.ts Side: R Lines: 1 Source: Local (branch) Diff hunk: ```diff @@ -0,0 +1,1 @@ +export const app = 1 ``` Comment: 请解释这行代码"
diff --git a/apps/web/tests/expected/forge-panel/review-record.expected.md b/apps/web/tests/expected/forge-panel/review-record.expected.md
new file mode 100644
index 0000000000..3e678d6071
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/review-record.expected.md
@@ -0,0 +1,4 @@
+- region "评论 R2–4":
+  - text: 你的评论 R2–4 已发布到 GitHub 请核对边界条件
+  - button "添加到输入框"
+  - button "在 GitHub 查看"
diff --git a/apps/web/tests/expected/forge-panel/review-summary-required.expected.md b/apps/web/tests/expected/forge-panel/review-summary-required.expected.md
new file mode 100644
index 0000000000..3e384b28e1
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/review-summary-required.expected.md
@@ -0,0 +1,14 @@
+- dialog "提交评审":
+  - heading "提交评审" [level=2]
+  - button "关闭"
+  - text: 待提交评论（1）
+  - textbox "评审总结…"
+  - status: 请求更改时，请填写评审总结
+  - radio "评论"
+  - text: 评论
+  - radio "批准"
+  - text: 批准
+  - radio "请求更改" [checked]
+  - text: 请求更改
+  - button "取消"
+  - button "提交评审" [disabled]
diff --git a/apps/web/tests/expected/forge-panel/submit-review.expected.md b/apps/web/tests/expected/forge-panel/submit-review.expected.md
new file mode 100644
index 0000000000..0687f7ba99
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/submit-review.expected.md
@@ -0,0 +1,14 @@
+- dialog "提交评审":
+  - heading "提交评审" [level=2]
+  - button "关闭"
+  - text: 待提交评论（1）
+  - textbox "评审总结…": 需要补充边界检查
+  - status: 请求更改时，请填写评审总结
+  - radio "评论"
+  - text: 评论
+  - radio "批准"
+  - text: 批准
+  - radio "请求更改" [checked]
+  - text: 请求更改
+  - button "取消"
+  - button "提交评审"
diff --git a/apps/web/tests/expected/forge-panel/worktree-option.expected.md b/apps/web/tests/expected/forge-panel/worktree-option.expected.md
new file mode 100644
index 0000000000..c9a85b8723
--- /dev/null
+++ b/apps/web/tests/expected/forge-panel/worktree-option.expected.md
@@ -0,0 +1,3 @@
+- button "当前分支：main": main
+- checkbox "新建工作树"
+- text: 新建工作树
diff --git a/apps/web/tests/expected/layout-bottom/geometry.expected.md b/apps/web/tests/expected/layout-bottom/geometry.expected.md
index 39188ce561..8e53379673 100644
--- a/apps/web/tests/expected/layout-bottom/geometry.expected.md
+++ b/apps/web/tests/expected/layout-bottom/geometry.expected.md
@@ -4,6 +4,6 @@ grown: {"bottom":{"top":440,"height":360,"bottom":800},"main":{"top":0,"height":
 darwin: {"bottom":{"top":440,"height":360,"bottom":800},"main":{"top":0,"height":440,"bottom":440},"sidebar":{"top":0,"height":440,"bottom":440},"rightbar":{"top":0,"height":440,"bottom":440},"overlay":{"top":0,"height":800,"bottom":800},"handles":[{"top":0,"height":440,"bottom":440}],"pageHeight":800}
 windows: {"bottom":{"top":440,"height":360,"bottom":800},"main":{"top":40,"height":400,"bottom":440},"sidebar":{"top":40,"height":400,"bottom":440},"rightbar":{"top":40,"height":400,"bottom":440},"overlay":{"top":0,"height":800,"bottom":800},"handles":[{"top":40,"height":400,"bottom":440}],"pageHeight":800}
 browser: {"bottom":{"top":440,"height":360,"bottom":800},"main":{"top":0,"height":440,"bottom":440},"sidebar":{"top":0,"height":440,"bottom":440},"rightbar":{"top":0,"height":440,"bottom":440},"overlay":{"top":0,"height":800,"bottom":800},"handles":[{"top":0,"height":440,"bottom":440}],"pageHeight":800}
-narrow: {"bottom":{"top":240,"height":360,"bottom":600},"main":{"top":0,"height":240,"bottom":240},"sidebar":{"top":0,"height":240,"bottom":240},"rightbar":{"top":0,"height":240,"bottom":240},"overlay":{"top":0,"height":600,"bottom":600},"handles":[],"pageHeight":600}
+narrow: {"bottom":{"top":240,"height":360,"bottom":600},"main":{"top":0,"height":240,"bottom":240},"sidebar":{"top":0,"height":600,"bottom":600},"rightbar":{"top":0,"height":240,"bottom":240},"overlay":{"top":0,"height":600,"bottom":600},"handles":[],"pageHeight":600}
 unregistered: {"bottom":{"top":600,"height":0,"bottom":600},"main":{"top":0,"height":600,"bottom":600},"sidebar":{"top":0,"height":600,"bottom":600},"rightbar":{"top":0,"height":600,"bottom":600},"overlay":{"top":0,"height":600,"bottom":600},"handles":[],"pageHeight":600}
 collapsed: {"bottom":{"top":600,"height":0,"bottom":600},"main":{"top":0,"height":600,"bottom":600},"sidebar":{"top":0,"height":600,"bottom":600},"rightbar":{"top":0,"height":600,"bottom":600},"overlay":{"top":0,"height":600,"bottom":600},"handles":[],"pageHeight":600}
diff --git a/apps/web/tests/expected/markdown-colon-file-links.md b/apps/web/tests/expected/markdown-colon-file-links.md
new file mode 100644
index 0000000000..fe7031c9f0
--- /dev/null
+++ b/apps/web/tests/expected/markdown-colon-file-links.md
@@ -0,0 +1,21 @@
+- paragraph:
+  - button "Relative colon:24–30"
+  - text: ·
+  - button "Absolute colon:30"
+  - text: ·
+  - button "Fragment:12"
+  - text: ·
+  - button "Column:24:5"
+  - text: ·
+  - button "Zero line"
+  - text: ·
+  - button "Reversed range"
+  - text: ·
+  - link "Bare URL":
+    - /url: index.ts:24
+  - text: · Blocked script ·
+  - link "Development server":
+    - /url: localhost:3000
+  - text: ·
+  - link "Mail":
+    - /url: mailto:10086
diff --git a/apps/web/tests/expected/menu-material/materials.expected.json b/apps/web/tests/expected/menu-material/materials.expected.json
index 301564bef3..b0abc51804 100644
--- a/apps/web/tests/expected/menu-material/materials.expected.json
+++ b/apps/web/tests/expected/menu-material/materials.expected.json
@@ -1,24 +1,24 @@
 {
   "web-light": {
-    "fill": "rgba(248, 249, 250, 0.58)",
+    "fill": "rgba(252, 253, 254, 0.7)",
     "blur": "blur(40px) saturate(1.5)",
     "radius": "16px",
     "shadow": "rgba(0, 0, 0, 0.04) 0px 0px 0px 0.5px, rgba(0, 0, 0, 0.04) 0px 3px 8px 0px, rgba(0, 0, 0, 0.05) 0px 0px 20px 0px"
   },
   "web-dark": {
-    "fill": "rgba(67, 69, 74, 0.45)",
+    "fill": "rgba(48, 49, 54, 0.64)",
     "blur": "blur(40px) saturate(1.5)",
     "radius": "16px",
     "shadow": "rgba(255, 255, 255, 0.16) 0px 0px 0px 0.5px, rgba(0, 0, 0, 0.04) 0px 3px 8px 0px, rgba(0, 0, 0, 0.05) 0px 0px 20px 0px"
   },
   "darwin-light": {
-    "fill": "rgba(248, 249, 250, 0.58)",
+    "fill": "rgba(252, 253, 254, 0.7)",
     "blur": "blur(40px) saturate(1.5)",
     "radius": "16px",
     "shadow": "rgba(0, 0, 0, 0.04) 0px 0px 0px 0.5px, rgba(0, 0, 0, 0.04) 0px 3px 8px 0px, rgba(0, 0, 0, 0.05) 0px 0px 20px 0px"
   },
   "darwin-dark": {
-    "fill": "rgba(67, 69, 74, 0.45)",
+    "fill": "rgba(48, 49, 54, 0.64)",
     "blur": "blur(40px) saturate(1.5)",
     "radius": "16px",
     "shadow": "rgba(255, 255, 255, 0.16) 0px 0px 0px 0.5px, rgba(0, 0, 0, 0.04) 0px 3px 8px 0px, rgba(0, 0, 0, 0.05) 0px 0px 20px 0px"
diff --git a/apps/web/tests/expected/menu-material/session-menu.expected.md b/apps/web/tests/expected/menu-material/session-menu.expected.md
index ebb1786386..c7c535b9e4 100644
--- a/apps/web/tests/expected/menu-material/session-menu.expected.md
+++ b/apps/web/tests/expected/menu-material/session-menu.expected.md
@@ -2,5 +2,7 @@
   - menuitem "Pin session"
   - menuitem "Rename"
   - menuitem "Fork session"
-  - menuitem "Archive session"
+  - separator
   - menuitem "Copy Session ID"
+  - separator
+  - menuitem "Archive session"
diff --git a/apps/web/tests/expected/plugin-install-registry/installed.expected.md b/apps/web/tests/expected/plugin-install-registry/installed.expected.md
index 2ddc96e196..d198049eca 100644
--- a/apps/web/tests/expected/plugin-install-registry/installed.expected.md
+++ b/apps/web/tests/expected/plugin-install-registry/installed.expected.md
@@ -15,4 +15,5 @@
   - text: 已完成 $ pnpm add mirrored-package
   - button "复制"
   - text: Installed from the registry pnpm names
+  - paragraph: 完整日志：{{cwd}}/.dsh-home/profiles/scaffold/.plugin-manager/logs/operation-{{suffix}}/pnpm.log
   - button "立即启用"
diff --git a/apps/web/tests/expected/plugin-install-silent-failure/failed.expected.md b/apps/web/tests/expected/plugin-install-silent-failure/failed.expected.md
new file mode 100644
index 0000000000..61630bd8b2
--- /dev/null
+++ b/apps/web/tests/expected/plugin-install-silent-failure/failed.expected.md
@@ -0,0 +1,14 @@
+- dialog "插件安装失败":
+  - button "返回编辑": 编辑
+  - button "关闭"
+  - alert: 插件安装失败
+  - paragraph: 安装命令失败，原因见安装详情
+  - paragraph: silent-package
+  - paragraph: 版本 1.0.0
+  - button "收起安装详情" [expanded]
+  - button "重试"
+  - paragraph: 安装位置：{{cwd}}/.dsh-home/profiles/scaffold
+  - text: 失败 $ pnpm add silent-package 退出码 1
+  - button "复制"
+  - text: "Command failed with exit code 1: {{node}} add silent-package"
+  - paragraph: 完整日志：{{cwd}}/.dsh-home/profiles/scaffold/.plugin-manager/logs/operation-{{suffix}}/pnpm.log
diff --git a/apps/web/tests/expected/plugin-manager/header-natural-motion.expected.md b/apps/web/tests/expected/plugin-manager/header-natural-motion.expected.md
index e1561e6f7c..648b1e5f3b 100644
--- a/apps/web/tests/expected/plugin-manager/header-natural-motion.expected.md
+++ b/apps/web/tests/expected/plugin-manager/header-natural-motion.expected.md
@@ -6,4 +6,5 @@
 - Tabs / 1280px: resting title 28, actions 28, tabs 96; pinned actions 17, tabs 16, bar 66; stable range, reversible coordinates, same controls.
 - Tabs / 600px: resting title 28, actions 97, tabs 96; pinned actions 17, tabs 16, bar 66; stable range, reversible coordinates, same controls.
 - Tabs / 470px: resting title 28, actions 97, tabs 96; pinned actions 17, tabs 16, bar 66; stable range, reversible coordinates, same controls.
-- Tabs / 390px: resting title 28, actions 146, tabs 96; pinned actions 66, tabs 16, bar 114; stable range, reversible coordinates, same controls.
+- Tabs / 390px: resting title 28, actions 97, tabs 96; pinned actions 17, tabs 16, bar 66; stable range, reversible coordinates, same controls.
+- Tabs / 320px: resting title 28, actions 146, tabs 96; pinned actions 66, tabs 16, bar 114; stable range, reversible coordinates, same controls.
diff --git a/apps/web/tests/expected/schedule-header.expected.md b/apps/web/tests/expected/schedule-header.expected.md
index 96bff76bee..eb305c44f7 100644
--- a/apps/web/tests/expected/schedule-header.expected.md
+++ b/apps/web/tests/expected/schedule-header.expected.md
@@ -7,7 +7,7 @@ en 440px: title and New single-line, New beside the title; contained; New retain
 en 390px: title and New single-line, New beside the title; contained; New retains focus
 en 430px: title and New single-line, New beside the title; contained; New retains focus
 en 1024px: title and New single-line, New beside the title; contained; New retains focus
-en 509px with sidebar expanded: title single-line; New moves below the title
+en 220px page column: title single-line; New moves below the title
 zh 1680px: title and New single-line, New beside the title; contained; New retains focus
 zh 800px: title and New single-line, New beside the title; contained; New retains focus
 zh 520px: title and New single-line, New beside the title; contained; New retains focus
diff --git a/apps/web/tests/expected/shortcuts-panels/tab-menu.expected.md b/apps/web/tests/expected/shortcuts-panels/tab-menu.expected.md
index c8ab6426ab..16362fff3a 100644
--- a/apps/web/tests/expected/shortcuts-panels/tab-menu.expected.md
+++ b/apps/web/tests/expected/shortcuts-panels/tab-menu.expected.md
@@ -1,2 +1,3 @@
 - menu:
   - menuitem "Close"
+  - menuitem "Close Other Tabs" [disabled]
diff --git a/apps/web/tests/expected/shortcuts-workspace/session-menu.expected.md b/apps/web/tests/expected/shortcuts-workspace/session-menu.expected.md
index ebb1786386..6724e2373d 100644
--- a/apps/web/tests/expected/shortcuts-workspace/session-menu.expected.md
+++ b/apps/web/tests/expected/shortcuts-workspace/session-menu.expected.md
@@ -2,5 +2,8 @@
   - menuitem "Pin session"
   - menuitem "Rename"
   - menuitem "Fork session"
-  - menuitem "Archive session"
+  - separator
   - menuitem "Copy Session ID"
+  - menuitem "Show in Finder"
+  - separator
+  - menuitem "Archive session"
diff --git a/apps/web/tests/expected/sidebar-drawer.expected.md b/apps/web/tests/expected/sidebar-drawer.expected.md
new file mode 100644
index 0000000000..fafb1402b2
--- /dev/null
+++ b/apps/web/tests/expected/sidebar-drawer.expected.md
@@ -0,0 +1,24 @@
+390px: closed sidebar has no rail; main width 390px
+open: main geometry retained; background inert; no resize handle
+close: Session navigation, Plugins navigation, mask and Escape
+retained: sidebar DOM and opener focus
+768px: 56px rail; main width 712px; drawer focus transfers to the rail toggle
+breakpoint motion: collapsed rail hides immediately and returns compact without crossfades; expanded sidebar and explicit toggles retain their slides
+767px: hidden drawer; main width 767px; no page overflow
+global panels: browser top inset 48px; macOS keeps its existing clearance
+tooltips: sidebar and workspace controls escape the drawer and fit the viewport
+search input: 16px on touch; 13px with a fine pointer
+simulated keyboard: homepage and drawer retain 844px layout height without following the 360px visual viewport; Settings stays within the viewport
+keyboard close: layout height stays 844px; sidebar search retained; Settings close remains reachable
+shell coverage: drawer backing and mask cover 844px without synthetic safe-area insets
+rotation: 844x390 then 390x844 restores shell height and sidebar breakpoint
+folded landscape: 951px frame splits at 475.5px without a resize handle; unfolding restores 280px and search focus; portrait retains the drawer
+fold transitions: sidebar controls follow the divider in both directions; reduced motion changes width without animation
+drawer mask: opacity transitions from 0 to 1 on open and 1 to 0 on close
+reduced motion: drawer and mask settle without transitions
+Web header: only the sidebar opener remains, with 48px leading clearance
+below 768px: plugin and automation pages use 20px insets; Web view tabs align at 20px, while Desktop and wider Web tabs retain 28px
+touch selected Session: More remains visible; update time is hidden; pinned rows offer Unpin before More with Workspace action spacing
+touch Workspace: actions appear only while expanded, including after folding the focused row
+fine pointer: folded Workspace actions remain available on hover
+fine pointer: selected Session actions stay hidden until hover, including at 390px
diff --git a/apps/web/tests/expected/sidebar-menu-dismissal.expected.md b/apps/web/tests/expected/sidebar-menu-dismissal.expected.md
new file mode 100644
index 0000000000..585e3877cd
--- /dev/null
+++ b/apps/web/tests/expected/sidebar-menu-dismissal.expected.md
@@ -0,0 +1,2 @@
+View options and Session menus close when the sidebar becomes an inert drawer.
+Focus returns to the visible sidebar opener; retained Session rows keep their DOM identity.
diff --git a/apps/web/tests/fixtures/markdown-colon-file-links/session.v3.jsonl b/apps/web/tests/fixtures/markdown-colon-file-links/session.v3.jsonl
new file mode 100644
index 0000000000..7ef9426138
--- /dev/null
+++ b/apps/web/tests/fixtures/markdown-colon-file-links/session.v3.jsonl
@@ -0,0 +1,10 @@
+{"version":3,"isSeeded":false,"createdAt":0,"cwd":"{{cwd}}","delegationDepth":0,"type":"session","id":"{{session:1}}"}
+{"type":"turn/start","data":{"turn":1}}
+{"type":"step/start","data":{"turn":1,"step":1}}
+{"type":"system/message","data":{"turn":1,"step":1,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt"},"id":"{{message:1}}"}},"surfaceOp":"append"}
+{"type":"user/message","data":{"content":[{"type":"text","text":"Link src/example.txt using relative :24-30, absolute :30, and relative #L12 destinations, plus line/column and invalid locations, localhost:3000, index.ts:24, mailto:10086, and a blocked script link."}],"source":{"kind":"user","rpcId":"{{rpc:1}}"},"role":"user","id":"{{message:2}}"},"surfaceOp":"append"}
+{"type":"session/title","data":{"title":"Colon file references","messageSeqs":[3],"source":{"kind":"fallback"}}}
+{"type":"request/header","data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"tools":"{{tools}}","messagePrefix":["{{messagePrefix}}"]},"reason":"initial"}}
+{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"text","text":"[Relative colon:24–30](src/example.txt:24-30) · [Absolute colon:30]({{cwd}}/src/example.txt:30) · [Fragment:12](src/example.txt#L12) · [Column:24:5](src/example.txt:24:5) · [Zero line](src/example.txt:0) · [Reversed range](src/example.txt:30-24) · [Bare URL](index.ts:24) · [Blocked script](javascript:alert) · [Development server](localhost:3000) · [Mail](mailto:10086)"}],"source":{"provider":"deepseek-official","model":"deepseek-v4-flash","kind":"model"},"id":"{{message:3}}"},"stream":[{"type":"chunk","time":0,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"text-chunks","time0":0,"index":0,"dt":[],"texts":["[Relative colon:24–30](src/example.txt:24-30) · [Absolute colon:30]({{cwd}}/src/example.txt:30) · [Fragment:12](src/example.txt#L12) · [Column:24:5](src/example.txt:24:5) · [Zero line](src/example.txt:0) · [Reversed range](src/example.txt:30-24) · [Bare URL](index.ts:24) · [Blocked script](javascript:alert) · [Development server](localhost:3000) · [Mail](mailto:10086)"]},{"type":"chunk","time":0,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"[Relative colon:24–30](src/example.txt:24-30) · [Absolute colon:30]({{cwd}}/src/example.txt:30) · [Fragment:12](src/example.txt#L12) · [Column:24:5](src/example.txt:24:5) · [Zero line](src/example.txt:0) · [Reversed range](src/example.txt:30-24) · [Bare URL](index.ts:24) · [Blocked script](javascript:alert) · [Development server](localhost:3000) · [Mail](mailto:10086)"}}},{"type":"chunk","time":0,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
+{"type":"step/end","data":{"turn":1,"step":1}}
+{"type":"turn/end","data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/apps/web/tests/fixtures/plugins/fixture-live-client/client.js b/apps/web/tests/fixtures/plugins/fixture-live-client/client.js
index 1c884c568f..db9eab44b9 100644
--- a/apps/web/tests/fixtures/plugins/fixture-live-client/client.js
+++ b/apps/web/tests/fixtures/plugins/fixture-live-client/client.js
@@ -101,8 +101,7 @@ window.__ModuleLoader__.load({
           }
         })
         ctx.slots.inject('sidebar.workspaces.session.menu.item', function* () {
-          // The shipped rows end at Session ID (450); these follow as one group,
-          // opened by the export row's hairline.
+          // Legacy rows form their own ordered group before the built-in Archive action.
           yield registerSessionAction('fixture.export-session', 500, 'exportSession', true)
           yield registerSessionAction('fixture.copy-session-id', 600, 'copySessionId', false)
         })
diff --git a/apps/web/tests/forge-panel.e2e.ts b/apps/web/tests/forge-panel.e2e.ts
index 3422f1c8d7..6be6b70c39 100644
--- a/apps/web/tests/forge-panel.e2e.ts
+++ b/apps/web/tests/forge-panel.e2e.ts
@@ -77,13 +77,23 @@ if (args[0] === 'api' && args[5] === 'repos/octo/demo/pulls/9/merge') {
   process.stdout.write(JSON.stringify({ sha: 'c'.repeat(40), merged: true, message: 'Pull Request successfully merged' }))
   process.exit(0)
 }
+if (args[0] === 'api' && args[3] === 'repos/octo/demo/pulls/7') {
+  process.stdout.write(JSON.stringify({ head: { sha: 'a'.repeat(40) }, state: 'open' }))
+  process.exit(0)
+}
+if (args[0] === 'api' && args[4] === 'POST' && ['repos/octo/demo/pulls/7/comments', 'repos/octo/demo/pulls/7/reviews'].includes(args[5])) {
+  const body = JSON.parse(readFileSync(0, 'utf8'))
+  appendFileSync(join(here, 'reviews.jsonl'), JSON.stringify({ endpoint: args[5], body }) + '\\n')
+  process.stdout.write(JSON.stringify({ html_url: 'https://github.com/octo/demo/pull/7#pullrequestreview-1' }))
+  process.exit(0)
+}
 if (args[0] === 'pr' && args[1] === 'diff') {
   const refused = join(here, 'pr-' + args[2] + '.refused')
   if (existsSync(refused)) {
     process.stderr.write(readFileSync(refused, 'utf8'))
     process.exit(1)
   }
-  process.stdout.write(readFileSync(join(here, 'pr-' + args[2] + '.diff'), 'utf8'))
+  await new Promise(resolve => process.stdout.write(readFileSync(join(here, 'pr-' + args[2] + '.diff'), 'utf8'), resolve))
   process.exit(0)
 }
 if (args[0] === 'api' && args[3] === '-H' && args[4] === 'Accept: application/vnd.github.raw+json') {
@@ -103,10 +113,10 @@ if (args[0] === 'auth' && args[1] === 'status') {
 }
 if (args[0] === 'api' && args[1] === 'graphql') {
   const query = args.find(arg => arg.startsWith('query=')).slice('query='.length)
-  const check = (name, conclusion, completedAt) => ({
-    __typename: 'CheckRun', name, status: 'COMPLETED', conclusion,
+  const check = (name, conclusion, completedAt, databaseId = 101) => ({
+    __typename: 'CheckRun', id: 'check-' + databaseId, name, status: 'COMPLETED', conclusion, databaseId,
     detailsUrl: 'https://github.com/octo/demo/actions/runs/1', startedAt: '2026-10-09T00:00:00Z', completedAt,
-    checkSuite: { workflowRun: { workflow: { name: 'CI' } } },
+    checkSuite: { app: { id: 'github-actions' }, workflowRun: { event: 'pull_request', workflow: { id: 'ci', name: 'CI' } } },
   })
   const pulls = {
     7: {
@@ -114,9 +124,9 @@ if (args[0] === 'api' && args[1] === 'graphql') {
       updatedAt: '2026-10-09T00:00:00Z', closedAt: null, author: { login: 'octo' }, headRefName: 'feat', headRefOid: 'a'.repeat(40),
       baseRefName: 'main', additions: 128, deletions: 14, mergeable: 'MERGEABLE', mergeStateStatus: 'BLOCKED', reviewDecision: 'REVIEW_REQUIRED',
       reviewThreads: { nodes: [{ isResolved: false }] },
-      commits: { nodes: [{ commit: { statusCheckRollup: { state: 'FAILURE', contexts: {
-        pageInfo: { hasNextPage: false },
-        nodes: [check('lint', 'SUCCESS', '2026-10-09T00:00:42Z'), check('test', 'FAILURE', '2026-10-09T00:02:07Z')],
+      commits: { nodes: [{ commit: { statusCheckRollup: { id: 'rollup-7', state: 'FAILURE', contexts: {
+        pageInfo: { hasNextPage: true, endCursor: 'checks-100' },
+        nodes: Array.from({ length: 100 }, (_, i) => check('lint', 'FAILURE', '2026-10-08T00:00:42Z', i + 1)),
       } } } }] },
     },
     9: {
@@ -124,11 +134,18 @@ if (args[0] === 'api' && args[1] === 'graphql') {
       isDraft: !state.ready, updatedAt: '2026-10-09T00:00:00Z', closedAt: state.mergedAt, author: { login: 'octo' },
       headRefName: 'feat/merge', headRefOid: state.head ?? 'b'.repeat(40), baseRefName: 'main', additions: 30, deletions: 2, mergeable: 'MERGEABLE',
       mergeStateStatus: state.ready ? 'CLEAN' : 'BLOCKED', reviewDecision: 'APPROVED', reviewThreads: { nodes: [] },
-      commits: { nodes: [{ commit: { statusCheckRollup: { state: 'SUCCESS', contexts: {
-        pageInfo: { hasNextPage: false }, nodes: [check('lint', 'SUCCESS', '2026-10-09T00:00:42Z')],
+      commits: { nodes: [{ commit: { statusCheckRollup: { id: 'rollup-9', state: 'SUCCESS', contexts: {
+        pageInfo: { hasNextPage: false, endCursor: null }, nodes: [check('lint', 'SUCCESS', '2026-10-09T00:00:42Z')],
       } } } }] },
     },
   }
+  if (query.includes('node(id: $id)')) {
+    process.stdout.write(JSON.stringify({ data: { node: { contexts: {
+      pageInfo: { hasNextPage: false, endCursor: null },
+      nodes: [check('lint', 'SUCCESS', '2026-10-09T00:00:42Z'), check('test', 'FAILURE', '2026-10-09T00:02:07Z')],
+    } } } }))
+    process.exit(0)
+  }
   const settings = {
     squashMergeAllowed: true, mergeCommitAllowed: true, rebaseMergeAllowed: true, viewerPermission: 'WRITE', viewerDefaultMergeMethod: 'SQUASH',
   }
@@ -207,9 +224,12 @@ interface PanelLaunch {
  * Launch the bundle against a GitHub checkout of `main` and `release` and open the New Session screen of that workspace.
  * @param failureShot - name of the screenshot saved when the test fails.
  * @param scenario - normal conversation, a restoration follow-up, or a numbered PR lookup.
+ * @param options - desktop transport, checkout branch, browser input, sandbox runner availability, and diff output limit.
  * @returns the scaffold, page, and checkout.
  */
-async function launchPanel(failureShot: string, scenario: 'normal' | 'follow-up' | 'reference' = 'normal', desktop?: 'darwin' | 'win32'): Promise<PanelLaunch> {
+async function launchPanel(failureShot: string, scenario: 'normal' | 'follow-up' | 'reference' = 'normal',
+  options: { desktop?: 'darwin' | 'win32'; branch?: string; hasTouch?: boolean; missingSandbox?: boolean; maxDiffBytes?: number } = {}): Promise<PanelLaunch> {
+  const { desktop } = options
   const resources: { scaffold?: WebScaffold; browser?: Browser } = {}
   const root = await mkdtemp(join(tmpdir(), 'dsh-forge-panel-'))
   onTestFinished(async () => {
@@ -227,7 +247,9 @@ async function launchPanel(failureShot: string, scenario: 'normal' | 'follow-up'
   const panelText = `${Array.from({ length: 20 }, (_, index) => panelLine(index + 1, 'new')).join('\n')}\n`
   await writeFile(join(root, 'contents.json'), JSON.stringify({ [`src/panel.ts@${HEAD7}`]: panelText }))
   const overlay = join(root, 'forge.patch.yml')
-  await writeFile(overlay, `- id: forge-github\n  config: ${JSON.stringify({ ghCommand: gh })}\n`)
+  await writeFile(overlay, `- id: forge-github\n  config: ${JSON.stringify({ ghCommand: gh })}\n`
+    + (options.maxDiffBytes === undefined ? '' : `- id: forge-panel\n  config: ${JSON.stringify({ maxDiffBytes: options.maxDiffBytes })}\n`)
+    + (options.missingSandbox ? `- id: sandbox\n  config: ${JSON.stringify({ runnerCommand: [join(root, 'missing-sandbox')], runnerFailureSignatures: ['sandbox startup failed'] })}\n` : ''))
   const override = join(root, 'replay.override.json')
   // The borrowed scenario records one model call, so index 1 appends the reply to the follow-up.
   if (scenario === 'follow-up') await writeFile(override, JSON.stringify({ patches: [{ at: 1, entry: { kind: 'chunks', chunks: textReply(FOLLOW_UP_REPLY) } }] }))
@@ -265,6 +287,7 @@ async function launchPanel(failureShot: string, scenario: 'normal' | 'follow-up'
   await git(project, 'remote', 'add', 'origin', 'https://github.com/octo/demo.git')
   await git(project, 'branch', 'release')
   await git(project, 'commit', '--quiet', '--allow-empty', '-m', 'main only')
+  if (options.branch !== undefined) await git(project, 'checkout', '--quiet', '-b', options.branch)
   if (scenario === 'reference') {
     // The model's confined command must own the CLI double's writable call log.
     const modelBin = join(project, '.fixture-bin')
@@ -275,7 +298,8 @@ async function launchPanel(failureShot: string, scenario: 'normal' | 'follow-up'
 
   const browser = await chromium.launch()
   resources.browser = browser
-  const page = await browser.newPage({ viewport: { width: 1680, height: 1000 }, locale: ZH_BROWSER_LOCALE, timezoneId: 'Asia/Shanghai' })
+  const page = await browser.newPage({ viewport: { width: 1680, height: 1000 }, locale: ZH_BROWSER_LOCALE, timezoneId: 'Asia/Shanghai',
+    hasTouch: options.hasTouch ?? false })
   if (desktop !== undefined) {
     // Only Electron's keyboard transport is substituted; the product registry and menus remain real.
     await page.addInitScript(({ device, config }) => {
@@ -328,7 +352,7 @@ async function requestReleaseWorktree(failureShot: string, followUp = false): Pr
   const { page } = launched
   const option = page.locator('[data-forge-worktree]')
   await option.waitFor({ timeout: 20_000 })
-  await option.getByRole('checkbox', { name: '工作树', exact: true }).check()
+  await option.getByRole('checkbox', { name: '新建工作树', exact: true }).check()
   await option.getByRole('button', { name: '基于 main', exact: true }).click()
   await page.getByRole('menuitem', { name: 'release', exact: true }).click()
   await option.getByRole('button', { name: '基于 release', exact: true }).waitFor()
@@ -356,6 +380,68 @@ function worktreeRecords(events: readonly SessionEvent[]): unknown[] {
   })
 }
 
+it.skipIf(MODE === 'record')('reads local Git with full access when the sandbox runner cannot start', async () => {
+  const { scaffold, page, project, tripwire } = await launchPanel('web-e2e-forge-permissions', 'normal', { missingSandbox: true })
+  await git(project, 'update-ref', 'refs/remotes/origin/main', 'HEAD')
+  await git(project, 'symbolic-ref', 'refs/remotes/origin/HEAD', 'refs/remotes/origin/main')
+  await writeFile(join(project, 'README.md'), 'demo\nchanged\n')
+  const { settled } = await sendPrompt(page, scaffold)
+  const sessionId = await settled
+  await page.getByText('LIGHTHOUSE', { exact: true }).waitFor()
+  await page.locator('[data-forge-header]').click()
+  const panel = page.locator('[data-forge-panel]')
+  await panel.getByText('无法读取 Git 信息', { exact: true }).waitFor({ timeout: 20_000 })
+
+  const permission = page.locator('button[aria-label^="访问模式"]').first()
+  await permission.click()
+  await page.getByRole('menuitem', { name: '完全权限', exact: true }).click()
+  const confirmation = page.getByRole('dialog', { name: '确认启用完全权限？' })
+  await confirmation.getByRole('checkbox', { name: '我已了解风险，并愿意继续' }).check()
+  await confirmation.getByRole('button', { name: '启用完全权限' }).click()
+  const local = page.locator('[data-forge-local]')
+  await local.getByRole('button', { name: '查看本会话的变更：1 个文件，新增 1 行，删除 0 行', exact: true }).waitFor({ timeout: 20_000 })
+  await compareOrRefreshGolden(join(EXPECTED, 'full-access.expected.md'), await captureStableAria(page, '[data-forge-local]', scaffold.workspaceCwd), MODE)
+  await local.getByRole('button', { name: '查看本会话的变更：1 个文件，新增 1 行，删除 0 行', exact: true }).click()
+  await page.locator('[data-forge-diff-file="README.md"]').getByText('changed', { exact: true }).waitFor()
+
+  await permission.click()
+  await page.getByRole('menuitem', { name: '工作区内修改', exact: true }).click()
+  if (!await panel.isVisible()) await page.locator('[data-forge-header]').click()
+  await panel.getByText('无法读取 Git 信息', { exact: true }).waitFor({ timeout: 20_000 })
+  await expect.poll(async () => (await readPersistedEvents(scaffold, sessionId))
+    .filter(event => event.type === 'sandbox/mode').map(event => event.data.mode).slice(-2))
+    .toEqual(['danger-full-access', 'workspace-write'])
+  expect(tripwire.pageErrors).toEqual([])
+  expect(tripwire.warnings).toEqual([])
+})
+
+it.skipIf(MODE === 'record')('reports incomplete filter configuration and retries after it is corrected', async () => {
+  const { scaffold, page, project, tripwire } = await launchPanel('web-e2e-forge-filter-config', 'normal', { maxDiffBytes: 512 })
+  await git(project, 'update-ref', 'refs/remotes/origin/main', 'HEAD')
+  await git(project, 'symbolic-ref', 'refs/remotes/origin/HEAD', 'refs/remotes/origin/main')
+  await writeFile(join(project, 'README.md'), 'demo\nchanged\n')
+  const { settled } = await sendPrompt(page, scaffold)
+  await settled
+  await page.getByText('LIGHTHOUSE', { exact: true }).waitFor()
+  await page.locator('[data-forge-header]').click()
+  const openChanges = page.locator('[data-forge-local]').getByRole('button', { name: '查看本会话的变更：1 个文件，新增 1 行，删除 0 行', exact: true })
+  await openChanges.waitFor({ timeout: 20_000 })
+  const key = `filter.${'long'.repeat(200)}.clean`
+  await git(project, 'config', key, 'cat')
+  await openChanges.click()
+  const changes = page.locator('[data-forge-changes="local"]')
+  await changes.getByText('无法完整读取 Git 过滤器配置，尚未执行比较。请检查 Git 配置和读取上限后重试', { exact: true }).waitFor()
+  await compareOrRefreshGolden(join(EXPECTED, 'filter-config-failed.expected.md'),
+    await captureStableAria(page, '[data-forge-changes="local"]', scaffold.workspaceCwd), MODE)
+
+  await git(project, 'config', '--unset', key)
+  await changes.getByRole('button', { name: '重试', exact: true }).click()
+  await changes.locator('[data-forge-diff-file="README.md"]').getByText('changed', { exact: true }).waitFor()
+  expect(await changes.getByRole('status').count()).toBe(0)
+  expect(tripwire.pageErrors).toEqual([])
+  expect(tripwire.warnings).toEqual([])
+})
+
 it.skipIf(MODE === 'record')('automatically shows a numbered PR when gh JSON omits its URL', async () => {
   const { scaffold, page, project, tripwire } = await launchPanel('web-e2e-forge-numbered-reference', 'reference')
   const { settled } = await sendPrompt(page, scaffold)
@@ -427,6 +513,11 @@ it.skipIf(MODE === 'record')('starts a Session in a worktree before its first me
   const row = page.locator(`[data-row-key="session:${sessionId}"]`)
   await row.getByRole('img', { name: '在自己的工作树中', exact: true }).waitFor({ timeout: 20_000 })
   await row.getByRole('img', { name: '变更请求状态：需要处理 · 检查失败', exact: true }).waitFor({ timeout: 20_000 })
+  // A fresh page cannot retain the previous browser source's status values.
+  await page.goto('about:blank')
+  await expect.poll(() => scaffold.ctx.storageDomain.get('forge_panel_change_requests')).toBeUndefined()
+  await page.goto(scaffold.authenticatedUrl, { waitUntil: 'load' })
+  await row.getByRole('img', { name: '变更请求状态：需要处理 · 检查失败', exact: true }).waitFor({ timeout: 20_000 })
   await row.hover()
   const rowHover = page.locator('[data-forge-session-hover]')
   await rowHover.getByText('#7 Add the pull request panel', { exact: true }).waitFor({ timeout: 20_000 })
@@ -452,10 +543,14 @@ it.skipIf(MODE === 'record')('starts a Session in a worktree before its first me
   // The random branch suffix can read as a duration, so the branch is replaced before the capture normalizes durations.
   await compareOrRefreshGolden(join(EXPECTED, 'panel.expected.md'),
     await captureStableAria(page, '[data-forge-panel]', scaffold.workspaceCwd, { replacements: [[branch, 'dsh-{{worktree}}']] }), MODE)
+  const beforeChecks = (await readFile(join(root, 'calls.jsonl'), 'utf8')).trim().split('\n').map(line => JSON.parse(line) as string[])
+  expect(beforeChecks.some(args => args.includes('id=rollup-7'))).toBe(false)
   const checksRow = change.getByRole('button', { name: /^检查/ })
   await checksRow.click()
   const checks = page.getByRole('menu')
   await expect.poll(() => checks.getByRole('menuitem').allTextContents()).toEqual([expect.stringMatching(/^test/), expect.stringMatching(/^lint/)])
+  const afterChecks = (await readFile(join(root, 'calls.jsonl'), 'utf8')).trim().split('\n').map(line => JSON.parse(line) as string[])
+  expect(afterChecks.filter(args => args.includes('id=rollup-7'))).toHaveLength(1)
   await page.keyboard.press('Escape')
   await checks.waitFor({ state: 'detached' })
   expect(await checksRow.getAttribute('aria-expanded')).toBe('false')
@@ -590,7 +685,7 @@ it.skipIf(MODE === 'record')('marks a draft change request ready for review and
 })
 
 it.skipIf(MODE === 'record')('shows the local changes of the Session by scope and the changes of its change requests, expanding unchanged lines', async () => {
-  const { scaffold, page, root, project, tripwire } = await launchPanel('web-e2e-forge-panel-changes')
+  const { scaffold, page, root, project, tripwire } = await launchPanel('web-e2e-forge-panel-changes', 'follow-up')
   // origin/main stops at the twelve-line README; the branch adds a commit, a staged file, an edit, and an untracked file.
   await writeFile(join(project, 'README.md'), Array.from({ length: 12 }, (_, index) => `line ${index + 1}\n`).join(''))
   await git(project, 'commit', '--quiet', '-am', 'readme')
@@ -611,7 +706,12 @@ it.skipIf(MODE === 'record')('shows the local changes of the Session by scope an
   const session = scaffold.ctx.sessions.get(sessionId)
   if (session === undefined) throw new Error('The Session must stay loaded')
   const header = page.locator('[data-forge-header]')
-  await header.click()
+  await page.getByRole('button', { name: '打开右侧边栏', exact: true }).click()
+  const guide = page.locator('[data-sidebar-right-guide]')
+  await guide.getByRole('button', { name: /^代码审查和变更/ }).waitFor()
+  await compareOrRefreshGolden(join(EXPECTED, 'review-guide.expected.md'),
+    await captureStableAria(page, '[data-sidebar-right-guide-entry="forge-panel"]', scaffold.workspaceCwd), MODE)
+  await guide.getByRole('button', { name: /^代码审查和变更/ }).click()
   // The New Session screen inspected the checkout before these changes, which came from outside the Session.
   await page.locator('[data-forge-panel]').getByRole('button', { name: '刷新状态', exact: true }).click()
   const card = page.locator('[data-forge-local]')
@@ -626,13 +726,46 @@ it.skipIf(MODE === 'record')('shows the local changes of the Session by scope an
   await local.locator('[data-forge-diff-file="notes.md"]').getByText('新文件 · 未提交', { exact: true }).waitFor()
   const readme = local.locator('[data-forge-diff-file="README.md"]')
   await page.context().grantPermissions(['clipboard-read', 'clipboard-write'])
-  await readme.getByRole('button', { name: '复制路径: README.md', exact: true }).click()
-  await expect.poll(() => page.evaluate(() => navigator.clipboard.readText())).toBe('README.md')
   await page.evaluate(() => navigator.clipboard.writeText('unchanged'))
+  await readme.locator('[data-forge-file-label]').click()
+  await expect.poll(() => page.evaluate(() => navigator.clipboard.readText())).toBe('unchanged')
   await readme.locator('[data-forge-path-spacer]').click()
   await expect.poll(() => page.evaluate(() => navigator.clipboard.readText())).toBe('unchanged')
   await readme.getByRole('button', { name: '6 行未变更', exact: true }).click()
   await readme.getByText('line 1', { exact: true }).first().waitFor({ timeout: 20_000 })
+  await local.getByRole('button', { name: '全部 4 个文件', exact: true }).click()
+  const tree = page.getByRole('menu')
+  await tree.getByRole('textbox', { name: '筛选文件…' }).fill('extra')
+  await tree.getByRole('menuitem', { name: 'src/extra.ts', exact: true }).click()
+  for (const [path, comment] of [['src/app.ts', '请解释这行代码'], ['src/extra.ts', '请检查这项修改']] as const) {
+    const section = local.locator(`[data-forge-diff-file="${path}"]`)
+    const lineNumber = section.getByRole('button', { name: '选择第 R1 行', exact: true })
+    await lineNumber.hover()
+    expect(await lineNumber.evaluate(element => getComputedStyle(element).backgroundColor)).toBe('rgba(0, 0, 0, 0)')
+    const content = await section.locator('[data-review-code]').first().boundingBox()
+    const fileBox = await section.boundingBox()
+    if (content === null || fileBox === null) throw new Error('Added file must be visible')
+    expect(content.x - fileBox.x).toBeLessThan(70)
+    await lineNumber.click()
+    expect(await section.getByRole('textbox', { name: '留下评论…' }).count()).toBe(0)
+    await section.getByRole('button', { name: '添加评论', exact: true }).click()
+    await section.getByRole('textbox', { name: '留下评论…' }).fill(comment)
+    await section.locator('[data-forge-comment]').getByRole('button', { name: '添加到输入框', exact: true }).click()
+    await section.locator('[data-forge-review-thread="agent"]').getByText(comment, { exact: true }).waitFor()
+  }
+  await compareOrRefreshGolden(join(EXPECTED, 'review-quotes.expected.md'),
+    await captureStableAria(page, '[data-composer-input]', scaffold.workspaceCwd), MODE)
+  expect((await readPersistedEvents(scaffold, sessionId)).some(event => event.type === 'user/message'
+    && event.data.content.some(block => block.type === 'text' && block.text.includes('## User Comment')))).toBe(false)
+  const reviewed = scaffold.whenTurnSettled()
+  await page.locator('[data-composer-input]').first().press('Enter')
+  await reviewed
+  await page.getByText(FOLLOW_UP_REPLY, { exact: true }).waitFor()
+  const comments = (await readPersistedEvents(scaffold, sessionId)).flatMap(event => event.type === 'user/message'
+    ? event.data.content.flatMap(block => block.type === 'text' && block.text.includes('## User Comment') ? [block.text] : []) : [])
+  expect(comments).toHaveLength(1)
+  await compareOrRefreshGolden(join(EXPECTED, 'review-message.expected.md'), comments.join('').trimEnd(), MODE)
+
   await local.getByRole('button', { name: '分支', exact: true }).click()
   await page.getByRole('menuitem', { name: '已暂存', exact: true }).click()
   await local.getByText('暂存区与 HEAD 比较', { exact: true }).waitFor()
@@ -648,20 +781,177 @@ it.skipIf(MODE === 'record')('shows the local changes of the Session by scope an
   await change.getByRole('button', { name: '查看 #7 的变更：新增 128 行，删除 14 行', exact: true }).click()
   const view = page.locator('[data-forge-changes="change"]')
   const panelFile = view.locator('[data-forge-diff-file="src/panel.ts"]')
+  const title = await view.getByText('Add the pull request panel', { exact: true }).boundingBox()
+  const submit = await view.getByRole('button', { name: '提交评审', exact: true }).boundingBox()
+  if (title === null || submit === null) throw new Error('PR title and submit action must be visible')
+  expect(Math.abs(title.y + title.height / 2 - submit.y - submit.height / 2)).toBeLessThan(1)
+
   await panelFile.getByRole('button', { name: '6 行未变更', exact: true }).waitFor({ timeout: 20_000 })
   await compareOrRefreshGolden(join(EXPECTED, 'changes-view.expected.md'),
     await captureStableAria(page, '[data-forge-changes="change"]', scaffold.workspaceCwd), MODE)
+  await page.getByRole('button', { name: '全屏', exact: true }).click()
+  await view.getByRole('navigation').getByRole('button', { name: 'src/panel.ts', exact: true }).waitFor()
+  const fileTree = view.getByRole('navigation')
+  const treeIsLeft = async () => {
+    const tree = await fileTree.boundingBox()
+    const diff = await view.locator('[data-forge-changes-scroll]').boundingBox()
+    if (tree === null || diff === null) throw new Error('Tree and diff must be visible')
+    return tree.x < diff.x
+  }
+  expect(await treeIsLeft()).toBe(true)
+  const directoryName = await fileTree.getByText('src', { exact: true }).boundingBox()
+  const fileName = await fileTree.getByText('panel.ts', { exact: true }).boundingBox()
+  if (directoryName === null || fileName === null) throw new Error('Tree entries must be visible')
+  expect(fileName.x).toBeGreaterThan(directoryName.x)
+  await fileTree.getByRole('textbox', { name: '筛选文件…' }).fill('src')
+  await fileTree.getByRole('textbox', { name: '筛选文件…' }).fill('')
+  await fileTree.getByRole('button', { name: 'src', exact: true }).click()
+  await view.getByRole('button', { name: /^(将文件树移到右侧|隐藏文件树|在左侧显示文件树)$/ }).click()
+  expect(await treeIsLeft()).toBe(false)
+  expect(await fileTree.getByRole('button', { name: 'src', exact: true }).getAttribute('aria-expanded')).toBe('false')
+  await page.setViewportSize({ width: 390, height: 844 })
+  expect(await fileTree.isVisible()).toBe(false)
+  expect(await view.getByRole('button', { name: /^(将文件树移到右侧|隐藏文件树|在左侧显示文件树)$/ }).isVisible()).toBe(false)
+  await view.getByRole('button', { name: '全部 2 个文件', exact: true }).click()
+  await page.getByRole('menu').getByRole('textbox', { name: '筛选文件…' }).waitFor()
+  await page.keyboard.press('Escape')
+  await page.setViewportSize({ width: 1680, height: 1000 })
+  expect(await treeIsLeft()).toBe(false)
+  await view.getByRole('button', { name: /^(将文件树移到右侧|隐藏文件树|在左侧显示文件树)$/ }).click()
+  expect(await fileTree.isVisible()).toBe(false)
+  await view.getByRole('button', { name: /^(将文件树移到右侧|隐藏文件树|在左侧显示文件树)$/ }).click()
+  expect(await treeIsLeft()).toBe(true)
+  expect(await fileTree.getByRole('button', { name: 'src', exact: true }).getAttribute('aria-expanded')).toBe('false')
+  await fileTree.getByRole('textbox', { name: '筛选文件…' }).fill('src')
+  await view.getByRole('button', { name: /^(将文件树移到右侧|隐藏文件树|在左侧显示文件树)$/ }).click()
+  await view.getByRole('button', { name: /^(将文件树移到右侧|隐藏文件树|在左侧显示文件树)$/ }).click()
+  await view.getByRole('button', { name: /^(将文件树移到右侧|隐藏文件树|在左侧显示文件树)$/ }).click()
+  expect(await fileTree.getByRole('textbox', { name: '筛选文件…' }).inputValue()).toBe('src')
+  await compareOrRefreshGolden(join(EXPECTED, 'file-tree-toggle.expected.md'),
+    await captureStableAria(page, '[data-forge-changes="change"]', scaffold.workspaceCwd), MODE)
+  await fileTree.getByRole('textbox', { name: '筛选文件…' }).fill('')
+  await fileTree.getByRole('button', { name: 'src', exact: true }).click()
+  const resizeTree = view.getByRole('separator', { name: '调整文件树宽度', exact: true })
+  const originalWidth = Number(await resizeTree.getAttribute('aria-valuenow'))
+  const handle = await resizeTree.boundingBox()
+  if (handle === null) throw new Error('Tree resize handle must be visible')
+  await page.mouse.move(handle.x + handle.width / 2, handle.y + 100)
+  await page.mouse.down()
+  await page.mouse.move(handle.x + 80, handle.y + 100, { steps: 5 })
+  await page.mouse.up()
+  expect(Number(await resizeTree.getAttribute('aria-valuenow'))).toBeGreaterThan(originalWidth)
+  await resizeTree.press('Home')
+  expect(await fileTree.evaluate(element => element.scrollWidth <= element.clientWidth)).toBe(true)
+  const searchBounds = await fileTree.getByRole('textbox').boundingBox()
+  const treeBounds = await fileTree.boundingBox()
+  if (searchBounds === null || treeBounds === null) throw new Error('Tree search must be visible')
+  expect(searchBounds.x + searchBounds.width).toBeLessThanOrEqual(treeBounds.x + treeBounds.width)
+  await resizeTree.press('ArrowRight')
+  const resizedWidth = await resizeTree.getAttribute('aria-valuenow')
+  await view.getByRole('button', { name: /^(将文件树移到右侧|隐藏文件树|在左侧显示文件树)$/ }).click()
+  expect(await treeIsLeft()).toBe(false)
+  expect(await resizeTree.getAttribute('aria-valuenow')).toBe(resizedWidth)
+  await resizeTree.press('ArrowLeft')
+  expect(Number(await resizeTree.getAttribute('aria-valuenow'))).toBe(Number(resizedWidth) + 20)
+  await resizeTree.press('ArrowRight')
+  const rightHandle = await resizeTree.boundingBox()
+  if (rightHandle === null) throw new Error('Right tree resize handle must be visible')
+  await page.mouse.move(rightHandle.x + rightHandle.width / 2, rightHandle.y + 100)
+  await page.mouse.down()
+  await page.mouse.move(rightHandle.x - 80, rightHandle.y + 100, { steps: 5 })
+  await page.mouse.up()
+  expect(Number(await resizeTree.getAttribute('aria-valuenow'))).toBeGreaterThan(Number(resizedWidth))
+  const rightWidth = await resizeTree.getAttribute('aria-valuenow')
+  await view.getByRole('button', { name: /^(将文件树移到右侧|隐藏文件树|在左侧显示文件树)$/ }).click()
+  await view.getByRole('button', { name: /^(将文件树移到右侧|隐藏文件树|在左侧显示文件树)$/ }).click()
+  expect(await resizeTree.getAttribute('aria-valuenow')).toBe(rightWidth)
+  for (const side of ['old', 'new'] as const) {
+    const firstLine = await panelFile.locator(`[data-review-code][data-${side}-line="2"]`).boundingBox()
+    const lastLine = await panelFile.locator(`[data-review-code][data-${side}-line="4"]`).boundingBox()
+    if (firstLine === null || lastLine === null) throw new Error('Review text must be visible')
+    await page.mouse.move(firstLine.x + 7, firstLine.y + firstLine.height / 2)
+    await page.mouse.down()
+    await page.mouse.move(lastLine.x + 120, lastLine.y + lastLine.height / 2, { steps: 5 })
+    await page.mouse.up()
+    await panelFile.getByRole('button', { name: '添加评论', exact: true }).waitFor()
+    expect(await panelFile.getByRole('textbox', { name: '留下评论…' }).count()).toBe(0)
+    const opposite = panelFile.locator(`[data-diff-side="${side === 'old' ? 'R' : 'L'}"]`).first()
+    expect(await opposite.evaluate(element => getComputedStyle(element).userSelect)).toBe('none')
+    await page.keyboard.press('ControlOrMeta+c')
+    const copied = await page.evaluate(() => navigator.clipboard.readText())
+    expect(copied).toContain(side === 'old' ? 'n2 = 2' : "n2 = 'two'")
+    expect(copied).not.toContain(side === 'old' ? "n2 = 'two'" : 'n2 = 2')
+    expect(copied.match(/n3 = 3/g)).toHaveLength(1)
+  }
+  await panelFile.getByRole('button', { name: '添加评论', exact: true }).click()
+  await panelFile.getByRole('region', { name: '评论 R2–4', exact: true }).waitFor()
+  await panelFile.getByRole('textbox', { name: '留下评论…' }).fill('请核对边界条件')
+  await panelFile.getByRole('button', { name: 'GitHub 评论选项', exact: true }).click()
+  await page.getByRole('menuitem', { name: '发布单条评论', exact: true }).waitFor()
+  await page.keyboard.press('Escape')
+  await compareOrRefreshGolden(join(EXPECTED, 'review-composer.expected.md'),
+    await captureStableAria(page, '[data-forge-comment]', scaffold.workspaceCwd), MODE)
+  await page.getByRole('button', { name: '退出全屏', exact: true }).click()
+  const commentForm = panelFile.locator('[data-forge-comment]')
+  expect(await commentForm.evaluate(element => element.scrollWidth <= element.clientWidth)).toBe(true)
+  await page.getByRole('button', { name: '全屏', exact: true }).click()
+  await page.setViewportSize({ width: 390, height: 780 })
+  await commentForm.getByRole('textbox').focus()
+  expect(await commentForm.evaluate(element => element.scrollWidth <= element.clientWidth)).toBe(true)
+  const narrowComment = await commentForm.boundingBox()
+  if (narrowComment === null) throw new Error('Comment form must remain visible')
+  expect(narrowComment.x + narrowComment.width).toBeLessThanOrEqual(390)
+  await page.setViewportSize({ width: 1680, height: 1000 })
+  await panelFile.getByRole('button', { name: '开始评审', exact: true }).click()
+  await panelFile.locator('[data-forge-review-thread="pending"]').getByText('请核对边界条件', { exact: true }).waitFor()
+  await page.setViewportSize({ width: 1680, height: 500 })
+  const changesScroll = view.locator('[data-forge-changes-scroll]')
+  await changesScroll.evaluate((element) => { element.scrollTop = element.scrollHeight })
+  const reviewScroll = await changesScroll.evaluate(element => element.scrollTop)
+  expect(reviewScroll).toBeGreaterThan(0)
+  await view.getByRole('button', { name: '提交评审 (1)', exact: true }).click()
+  const reviewDialog = page.getByRole('dialog', { name: '提交评审', exact: true })
+  await reviewDialog.waitFor()
+  expect(await reviewDialog.getByRole('textbox').count()).toBe(1)
+  expect(await reviewDialog.getByText('请核对边界条件', { exact: true }).count()).toBe(0)
+  expect(await changesScroll.evaluate(element => element.scrollTop)).toBe(reviewScroll)
+  await page.setViewportSize({ width: 390, height: 780 })
+  expect(await reviewDialog.evaluate(element => element.scrollWidth <= element.clientWidth)).toBe(true)
+  const narrowDialog = await reviewDialog.boundingBox()
+  if (narrowDialog === null) throw new Error('Review dialog must remain visible')
+  expect(narrowDialog.x + narrowDialog.width).toBeLessThanOrEqual(390)
+  await page.setViewportSize({ width: 1680, height: 500 })
+  await page.keyboard.press('Escape')
+  expect(await reviewDialog.count()).toBe(0)
+  await view.getByRole('button', { name: '提交评审 (1)', exact: true }).click()
+  await reviewDialog.getByRole('radio', { name: '请求更改', exact: true }).check()
+  await reviewDialog.getByText('请求更改时，请填写评审总结', { exact: true }).waitFor()
+  expect(await reviewDialog.getByRole('button', { name: '提交评审', exact: true }).isDisabled()).toBe(true)
+  await compareOrRefreshGolden(join(EXPECTED, 'review-summary-required.expected.md'),
+    await captureStableAria(page, '[role="dialog"][aria-label="提交评审"]', scaffold.workspaceCwd), MODE)
+  await reviewDialog.getByRole('textbox', { name: '评审总结…', exact: true }).fill('需要补充边界检查')
+  await compareOrRefreshGolden(join(EXPECTED, 'submit-review.expected.md'),
+    await captureStableAria(page, '[role="dialog"][aria-label="提交评审"]', scaffold.workspaceCwd), MODE)
+  await reviewDialog.getByRole('button', { name: '提交评审', exact: true }).click()
+  await page.getByRole('alert').filter({ hasText: '已提交评审' }).waitFor()
+  await panelFile.locator('[data-forge-review-thread="published"]').getByText('请核对边界条件', { exact: true }).waitFor()
+  await compareOrRefreshGolden(join(EXPECTED, 'review-record.expected.md'), await captureStableAria(page, '[data-forge-review-thread="published"]', scaffold.workspaceCwd), MODE)
+  const published: unknown = JSON.parse((await readFile(join(root, 'reviews.jsonl'), 'utf8')).trim())
+  expect(published).toEqual({ endpoint: 'repos/octo/demo/pulls/7/reviews', body: { commit_id: HEAD7, event: 'REQUEST_CHANGES', body: '需要补充边界检查',
+    comments: [{ path: 'src/panel.ts', side: 'RIGHT', line: 4, start_line: 2, start_side: 'RIGHT', body: '请核对边界条件' }] } })
+  await page.getByRole('button', { name: '退出全屏', exact: true }).click()
   await panelFile.getByRole('button', { name: '6 行未变更', exact: true }).click()
   await panelFile.getByText('export const n6 = 6', { exact: true }).first().waitFor({ timeout: 20_000 })
   await panelFile.getByRole('button', { name: '2 行未变更', exact: true }).waitFor()
-  await panelFile.getByRole('button', { name: '复制路径: src/panel.ts', exact: true }).click()
+  await panelFile.getByRole('button', { name: 'panel.ts 的更多操作', exact: true }).click()
+  await page.getByRole('menuitem', { name: '复制路径', exact: true }).click()
   await expect.poll(() => page.evaluate(() => navigator.clipboard.readText())).toBe('src/panel.ts')
   const docsFile = view.locator('[data-forge-diff-file="docs/panel.md"]')
   await docsFile.getByRole('button', { name: '收起 panel.md', exact: true }).click()
   await page.setViewportSize({ width: 1280, height: 500 })
   const scrollport = view.locator('[data-forge-changes-scroll]')
   await scrollport.evaluate((element) => { element.scrollTop = 100; element.dispatchEvent(new Event('scroll')) })
-  await panelFile.getByRole('button', { name: '复制路径: src/panel.ts', exact: true }).click()
+  await panelFile.locator('[data-forge-file-label]').click()
   const position = await scrollport.evaluate(element => element.scrollTop)
   expect(position).toBeGreaterThan(0)
   const originalFile = await panelFile.elementHandle()
@@ -672,7 +962,19 @@ it.skipIf(MODE === 'record')('shows the local changes of the Session by scope an
   expect(await panelFile.evaluate((element, original) => element === original, originalFile)).toBe(true)
   await expect.poll(() => docsFile.getAttribute('data-expanded')).toBe(null)
   await expect.poll(() => scrollport.evaluate(element => element.scrollTop)).toBe(position)
+  expect(await panelFile.locator('[data-forge-review-thread="published"]').count()).toBe(1)
   await page.setViewportSize({ width: 1680, height: 1000 })
+  await page.locator('[data-dockkit-tab]').filter({ hasText: '#7 的变更' }).locator('[data-dockkit-tab-close]').click()
+  await expect.poll(() => view.count()).toBe(0)
+  if (await header.getAttribute('aria-pressed') !== 'true') await header.click()
+  await change.getByRole('button', { name: '查看 #7 的变更：新增 128 行，删除 14 行', exact: true }).click()
+  await panelFile.getByRole('button', { name: '6 行未变更', exact: true }).waitFor()
+  expect(await panelFile.locator('[data-forge-review-thread]').count()).toBe(0)
+  await view.getByRole('button', { name: '提交评审', exact: true }).click()
+  await reviewDialog.waitFor()
+  expect(await reviewDialog.getByRole('textbox').inputValue()).toBe('')
+  expect(await reviewDialog.getByRole('radio', { name: '评论', exact: true }).isChecked()).toBe(true)
+  await page.keyboard.press('Escape')
 
   // GitHub refuses the diff of pull request 9 as too large, so its view offers the web page instead of a retry.
   scaffold.ctx.forgeSession.track(session, DRAFT)
@@ -697,8 +999,300 @@ it.skipIf(MODE === 'record')('shows the local changes of the Session by scope an
 })
 
 
+it.skipIf(MODE === 'record')('retains a wrapped code line and tree width across tab and Session switches', async () => {
+  const { page, scaffold, root, tripwire } = await launchPanel('web-e2e-forge-reading-position')
+  const paths = ['src/before-0.ts', 'src/before-1.ts', 'src/before-2.ts', 'src/server.ts', 'src/after.ts']
+  const patch = paths.map(path => [
+    `diff --git a/${path} b/${path}`, 'index 1111111..2222222 100644', `--- a/${path}`, `+++ b/${path}`,
+    '@@ -1,650 +1,650 @@', '-const oldValue = true;', '+const newValue = true;',
+    ...Array.from({ length: 649 }, (_, index) => ` const value_${index + 2} = "${'x'.repeat(24 + (index + 2) % 70)}";`), '',
+  ].join('\n')).join('\n')
+  await writeFile(join(root, 'pr-7.diff'), patch)
+  const { settled } = await sendPrompt(page, scaffold)
+  const sessionId = await settled
+  const session = scaffold.ctx.sessions.get(sessionId)
+  if (session === undefined) throw new Error('Session must stay loaded')
+  scaffold.ctx.forgeSession.track(session, PULL)
+  // Keep the file tree and the Session sidebar visible together on every platform.
+  await page.setViewportSize({ width: 2400, height: 700 })
+  await page.locator('[data-forge-header]').click()
+  await page.locator(`[data-forge-change="${PULL}"]`).getByRole('button', { name: /查看 #7 的变更/ }).click()
+  const view = page.locator('[data-forge-changes="change"]')
+  const scroll = view.locator('[data-forge-changes-scroll]')
+  const file = view.locator('[data-forge-diff-file="src/server.ts"]')
+  const code = file.locator('[data-review-code][data-new-line="300"]')
+  const separator = view.getByRole('separator', { name: '调整文件树宽度', exact: true })
+  const beforeFile = view.locator('[data-forge-diff-file="src/before-0.ts"]')
+  // ResizeObserver runs between rendering frames, including when an ancestor becomes hidden.
+  const layout = () => page.evaluate(() => new Promise<void>((resolve) => {
+    requestAnimationFrame(() => { requestAnimationFrame(() => { resolve() }) })
+  }))
+  const reading = () => file.evaluate((element) => {
+    const viewport = element.closest('[data-forge-changes-scroll]')!
+    const top = Math.max(viewport.getBoundingClientRect().top, element.firstElementChild!.getBoundingClientRect().bottom)
+    const line = [...element.querySelectorAll<HTMLElement>('[data-review-code][data-new-line]')]
+      .find(row => row.getBoundingClientRect().bottom > top + 1)!
+    return { path: element.getAttribute('data-forge-diff-file'), line: line.dataset.newLine,
+      offset: line.getBoundingClientRect().top - top, scrollTop: viewport.scrollTop }
+  })
+  await code.waitFor()
+  for (const width of [240, 320]) {
+    if (width === 320) {
+      for (let step = 0; step < 4; step += 1) await separator.press('ArrowRight')
+      await beforeFile.getByRole('button', { name: '收起 before-0.ts', exact: true }).click()
+    }
+    await layout()
+    await code.evaluate((element) => {
+      const viewport = element.closest('[data-forge-changes-scroll]')!
+      const header = element.closest('[data-forge-diff-file]')!.firstElementChild!
+      const top = viewport.getBoundingClientRect().top + header.getBoundingClientRect().height
+      viewport.scrollTop += element.getBoundingClientRect().top - top + 7
+    })
+    await layout()
+    const position = await reading()
+    expect(position.line).toBe('300')
+    expect(position.offset).toBe(-7)
+    for (const destination of ['tab', 'session', 'tab', 'session']) {
+      if (destination === 'tab') await page.getByRole('tab').filter({ hasText: '变更请求' }).click()
+      else await page.getByRole('button', { name: '新建会话', exact: true }).last().click()
+      await expect.poll(() => view.isVisible()).toBe(false)
+      await layout()
+      expect(await scroll.evaluate(element => element.clientWidth)).toBe(0)
+      if (destination === 'tab') await page.getByRole('tab').filter({ hasText: '#7 的变更' }).click()
+      else await page.locator(`[data-row-key="session:${sessionId}"]`).click()
+      await view.waitFor()
+      await layout()
+      expect(await separator.getAttribute('aria-valuenow')).toBe(String(width))
+      expect(await reading()).toEqual(position)
+      expect(await beforeFile.getAttribute('data-expanded')).toBe(width === 240 ? '' : null)
+    }
+  }
+  expect(tripwire.pageErrors).toEqual([])
+  expect(tripwire.warnings).toEqual([])
+})
+
+it.skipIf(MODE === 'record')('uses horizontal arrows to navigate files while preserving vertical scrolling and comment editing', async () => {
+  const { scaffold, page, project, tripwire } = await launchPanel('web-e2e-forge-file-keys')
+  await git(project, 'update-ref', 'refs/remotes/origin/main', 'HEAD')
+  await git(project, 'symbolic-ref', 'refs/remotes/origin/HEAD', 'refs/remotes/origin/main')
+  for (const path of ['a.txt', 'b.txt', 'c.txt']) {
+    await writeFile(join(project, path), Array.from({ length: path === 'c.txt' ? 1 : 80 }, (_, line) => `line ${line + 1}\n`).join(''))
+  }
+  const { settled } = await sendPrompt(page, scaffold)
+  await settled
+  await page.locator('[data-forge-header]').click()
+  await page.locator('[data-forge-panel]').getByRole('button', { name: '刷新状态', exact: true }).click()
+  await page.locator('[data-forge-local]').getByRole('button', { name: /查看本会话的变更：3 个文件/ }).click()
+  const view = page.locator('[data-forge-changes="local"]')
+  const scroll = view.getByRole('region', { name: '全部 3 个文件', exact: true })
+  await scroll.waitFor()
+  await page.getByRole('button', { name: '全屏', exact: true }).click()
+  await page.setViewportSize({ width: 1280, height: 500 })
+  const tree = view.getByRole('navigation')
+  const a = view.locator('[data-forge-diff-file="a.txt"]')
+  const b = view.locator('[data-forge-diff-file="b.txt"]')
+  const c = view.locator('[data-forge-diff-file="c.txt"]')
+  await b.getByRole('button', { name: '收起 b.txt', exact: true }).click()
+  await scroll.evaluate((element) => { element.scrollTop = 0 })
+  await scroll.focus()
+  await page.keyboard.press('ArrowLeft')
+  expect(await scroll.evaluate(element => element.scrollTop)).toBe(0)
+  expect(await scroll.evaluate(element => getComputedStyle(element).outlineStyle)).toBe('none')
+  await page.keyboard.press('ArrowDown')
+  await expect.poll(() => scroll.evaluate(element => element.scrollTop)).toBeGreaterThan(0)
+  await scroll.evaluate((element) => { element.scrollTop = 0 })
+  await page.keyboard.press('ArrowRight')
+  await expect.poll(() => tree.getByRole('button', { name: 'b.txt', exact: true }).getAttribute('aria-current')).toBe('true')
+  expect(await b.getAttribute('data-expanded')).toBe('')
+  expect(await scroll.evaluate(element => document.activeElement === element)).toBe(true)
+  await page.keyboard.press('ArrowRight')
+  await expect.poll(() => tree.getByRole('button', { name: 'c.txt', exact: true }).getAttribute('aria-current')).toBe('true')
+  const lastPosition = await scroll.evaluate(element => element.scrollTop)
+  const lastBox = await c.boundingBox(), viewport = await scroll.boundingBox()
+  if (lastBox === null || viewport === null) throw new Error('The last file and scroll viewport must be rendered')
+  expect(lastBox.y).toBeGreaterThan(viewport.y)
+  expect(lastBox.y).toBeLessThan(viewport.y + viewport.height)
+  await page.keyboard.press('ArrowRight')
+  expect(await scroll.evaluate(element => element.scrollTop)).toBe(lastPosition)
+  await page.keyboard.press('ArrowLeft')
+  await expect.poll(() => tree.getByRole('button', { name: 'b.txt', exact: true }).getAttribute('aria-current')).toBe('true')
+  await page.keyboard.press('ArrowLeft')
+  await expect.poll(() => tree.getByRole('button', { name: 'a.txt', exact: true }).getAttribute('aria-current')).toBe('true')
+  await b.evaluate((element) => {
+    const viewport = element.closest('[data-forge-changes-scroll]')!
+    viewport.scrollTop += element.getBoundingClientRect().top - viewport.getBoundingClientRect().top + 100
+  })
+  await page.keyboard.press('ArrowRight')
+  await expect.poll(() => tree.getByRole('button', { name: 'c.txt', exact: true }).getAttribute('aria-current')).toBe('true')
+  await tree.getByRole('button', { name: 'a.txt', exact: true }).click()
+  await a.getByRole('button', { name: '选择第 R1 行', exact: true }).click()
+  await a.getByRole('button', { name: '添加评论', exact: true }).click()
+  const input = a.getByRole('textbox', { name: '留下评论…', exact: true })
+  await input.fill('keep editing')
+  await input.press('ArrowLeft')
+  expect(await input.evaluate(element => (element as HTMLTextAreaElement).selectionStart)).toBe(11)
+  await input.press('ArrowRight')
+  expect(await input.inputValue()).toBe('keep editing')
+  expect(await tree.getByRole('button', { name: 'a.txt', exact: true }).getAttribute('aria-current')).toBe('true')
+  expect(await input.evaluate(element => document.activeElement === element)).toBe(true)
+  expect(tripwire.pageErrors).toEqual([])
+  expect(tripwire.warnings).toEqual([])
+})
+
+it.skipIf(MODE === 'record')('keeps localized status columns separate and long file lists inside one vertical scroller', async () => {
+  const { scaffold, page, project, tripwire } = await launchPanel('web-e2e-forge-layout')
+  await page.locator('[data-forge-current-branch]').waitFor()
+  await compareOrRefreshGolden(join(EXPECTED, 'worktree-option.expected.md'),
+    await captureStableAria(page, '[data-forge-worktree]', scaffold.workspaceCwd), MODE)
+  await page.getByRole('button', { name: '收起侧边栏', exact: true }).click()
+  await page.setViewportSize({ width: 390, height: 844 })
+  await expect.poll(() => page.locator('[data-forge-worktree]')
+    .evaluate(element => element.getBoundingClientRect().right)).toBeLessThanOrEqual(390)
+  await page.setViewportSize({ width: 1680, height: 1000 })
+  await git(project, 'update-ref', 'refs/remotes/origin/main', 'HEAD')
+  await git(project, 'symbolic-ref', 'refs/remotes/origin/HEAD', 'refs/remotes/origin/main')
+  await mkdir(join(project, 'src'))
+  await Promise.all(Array.from({ length: 60 }, (_, index) => writeFile(join(project, 'src', `file-${index}.ts`), `export const value = ${index}\n`)))
+  const { settled } = await sendPrompt(page, scaffold)
+  const session = scaffold.ctx.sessions.get(await settled)
+  if (session === undefined) throw new Error('The Session must stay loaded')
+  scaffold.ctx.forgeSession.track(session, PULL)
+  await page.locator('[data-forge-header]').click()
+  const panel = page.locator('[data-forge-panel]')
+  await panel.getByRole('button', { name: '刷新状态', exact: true }).click()
+  const local = panel.locator('[data-forge-local]')
+  await local.locator('button[aria-expanded]').click()
+  await expect.poll(() => local.locator('li').count(), { timeout: 20_000 }).toBe(60)
+  for (const width of [1280, 390]) {
+    await page.setViewportSize({ width, height: 700 })
+    const outerScrollers = await panel.evaluate((element) => {
+      const scrollers: string[] = []
+      for (let ancestor = element.parentElement; ancestor !== null; ancestor = ancestor.parentElement) {
+        if (/auto|scroll/.test(getComputedStyle(ancestor).overflowY) && ancestor.scrollHeight > ancestor.clientHeight + 1) {
+          scrollers.push(ancestor.className)
+        }
+      }
+      return scrollers
+    })
+    expect(outerScrollers).toEqual([])
+    expect(await panel.evaluate(element => element.scrollHeight > element.clientHeight)).toBe(true)
+    await local.locator('li').last().scrollIntoViewIfNeeded()
+    expect(await local.locator('li').last().isVisible()).toBe(true)
+  }
+  await local.locator('button[aria-expanded]').click()
+  const change = panel.locator(`[data-forge-change="${PULL}"]`)
+  for (const [locale, labels] of [
+    ['zh', ['检查', '评审', '合并', '变更']],
+    ['en', ['Checks', 'Review', 'Merge', 'Changes']],
+    ['de', ['Prüfungen', 'Review', 'Zusammenführen', 'Änderungen']],
+  ] as const) {
+    await scaffold.ctx.settings.update('locale', { preference: locale })
+    await change.getByText(labels[0], { exact: true }).waitFor()
+    if (locale === 'en') {
+      await compareOrRefreshGolden(join(EXPECTED, 'local-card.expected.md'),
+        await captureStableAria(page, '[data-forge-local]', scaffold.workspaceCwd), MODE)
+    }
+    for (const width of [1280, 390]) {
+      await page.setViewportSize({ width, height: 700 })
+      await expect.poll(() => change.evaluate(element => element.getBoundingClientRect().right)).toBeLessThanOrEqual(width)
+      await change.getByText(labels[3], { exact: true }).hover()
+      for (const label of labels) {
+        const geometry = await change.getByText(label, { exact: true }).evaluate((element) => {
+          const value = element.nextElementSibling
+          if (value === null) throw new Error('Status label must have a value')
+          const range = document.createRange()
+          range.selectNodeContents(element)
+          const name = range.getBoundingClientRect()
+          const content = value.getBoundingClientRect()
+          const row = element.parentElement!
+          const icon = element.previousElementSibling!
+          const rowRect = row.getBoundingClientRect()
+          return {
+            gap: content.left - name.right,
+            iconInset: icon.getBoundingClientRect().left - rowRect.left,
+            rowInset: rowRect.left - row.closest('[data-forge-change]')!.getBoundingClientRect().left,
+            labelWidth: element.getBoundingClientRect().width,
+            valueOffset: content.left - rowRect.left,
+            right: content.right,
+            width: document.documentElement.clientWidth,
+          }
+        })
+        expect(geometry.gap).toBeGreaterThanOrEqual(8)
+        expect(geometry.iconInset).toBe(8)
+        expect(geometry.rowInset).toBeGreaterThanOrEqual(6)
+        expect(geometry.rowInset).toBeLessThanOrEqual(7)
+        if (locale === 'zh') {
+          expect(geometry.labelWidth).toBe(32)
+          expect(geometry.valueOffset).toBe(76)
+        }
+        expect(geometry.right).toBeLessThanOrEqual(geometry.width)
+      }
+    }
+  }
+  expect(tripwire.pageErrors).toEqual([])
+  expect(tripwire.warnings).toEqual([])
+})
+
+it.skipIf(MODE === 'record')('keeps long branch details accessible by touch and keyboard across the hero row breakpoints', async () => {
+  const branch = 'feature/a-long-current-branch-name-for-mobile-review'
+  const { page, scaffold, tripwire } = await launchPanel('web-e2e-forge-branch-details', 'normal', { branch, hasTouch: true })
+  const option = page.locator('[data-forge-worktree]')
+  const chip = option.locator('[data-forge-current-branch]')
+  await chip.waitFor()
+  await page.getByRole('button', { name: '收起侧边栏', exact: true }).click()
+  for (const [locale, label] of [['zh', `当前分支：${branch}`], ['en', `Current branch: ${branch}`], ['de', `Aktueller Branch: ${branch}`]] as const) {
+    await scaffold.ctx.settings.update('locale', { preference: locale })
+    await option.getByRole('button', { name: label, exact: true }).waitFor()
+    for (const width of [390, 600, 601, 700, 1280]) {
+      await page.setViewportSize({ width, height: 844 })
+      await chip.scrollIntoViewIfNeeded()
+      await expect.poll(() => option.evaluate((element) => {
+        const row = element.closest('[class*="heroWorkspaceRow"]')!
+        const ancestors: Element[] = []
+        for (let node: Element | null = row; node !== null; node = node.parentElement) ancestors.push(node)
+        return {
+          fits: element.getBoundingClientRect().right <= innerWidth,
+          overflow: ancestors.filter(node => node.scrollWidth > node.clientWidth + 1).map(node => node.className),
+        }
+      })).toEqual({ fits: true, overflow: [] })
+    }
+  }
+  await scaffold.ctx.settings.update('locale', { preference: 'en' })
+  await option.getByRole('button', { name: `Current branch: ${branch}`, exact: true }).waitFor()
+  await page.setViewportSize({ width: 390, height: 844 })
+  expect(await chip.locator('span').evaluate(element => element.scrollWidth > element.clientWidth)).toBe(true)
+  const tooltip = page.getByRole('tooltip', { exact: true, name: `Current branch: ${branch}` })
+  await chip.tap()
+  await tooltip.waitFor()
+  await compareOrRefreshGolden(join(EXPECTED, 'branch-details.expected.md'), await tooltip.ariaSnapshot(), MODE)
+  await chip.tap()
+  await tooltip.waitFor({ state: 'hidden' })
+  await chip.tap()
+  await tooltip.waitFor()
+  await page.locator('[class*="heroWorkspaceRow"]').tap({ position: { x: 1, y: 1 } })
+  await tooltip.waitFor({ state: 'hidden' })
+  await chip.focus()
+  await page.keyboard.press('Tab')
+  await page.keyboard.press('Shift+Tab')
+  await tooltip.waitFor()
+  await page.keyboard.press('Escape')
+  await tooltip.waitFor({ state: 'hidden' })
+  await page.keyboard.press('Enter')
+  await tooltip.waitFor()
+  await page.keyboard.press('Escape')
+  await tooltip.waitFor({ state: 'hidden' })
+  expect(await option.getByRole('checkbox').isChecked()).toBe(false)
+  expect(await page.getByRole('menu').count()).toBe(0)
+  await scaffold.ctx.settings.update('locale', { preference: 'zh' })
+  await option.getByRole('checkbox', { name: '新建工作树', exact: true }).waitFor()
+  const { settled } = await sendPrompt(page, scaffold)
+  await settled
+  expect(tripwire.pageErrors).toEqual([])
+  expect(tripwire.warnings).toEqual([])
+})
+
 it.skipIf(MODE === 'record').each(['darwin', 'win32'] as const)('closes diff menus when the %s desktop shortcut deactivates a retained tab', async (platform) => {
-  const { page, scaffold, project, tripwire } = await launchPanel(`web-e2e-forge-menu-${platform}`, 'normal', platform)
+  const { page, scaffold, project, tripwire } = await launchPanel(`web-e2e-forge-menu-${platform}`, 'normal', { desktop: platform })
   await git(project, 'update-ref', 'refs/remotes/origin/main', 'HEAD')
   await git(project, 'symbolic-ref', 'refs/remotes/origin/HEAD', 'refs/remotes/origin/main')
   await writeFile(join(project, 'README.md'), 'review this change\n')
@@ -708,7 +1302,7 @@ it.skipIf(MODE === 'record').each(['darwin', 'win32'] as const)('closes diff men
   await page.locator('[data-forge-panel]').getByRole('button', { name: '刷新状态', exact: true }).click()
   await page.locator('[data-forge-local]').getByRole('button', { name: /查看本会话的变更：1 个文件/ }).click()
   const view = page.locator('[data-forge-changes="local"]')
-  await view.getByRole('button', { name: '复制路径: README.md', exact: true }).waitFor()
+  await view.locator('[data-forge-diff-file="README.md"]').waitFor()
   for (const name of ['分支', '全部 1 个文件', 'README.md 的更多操作']) {
     await view.getByRole('button', { name, exact: true }).click()
     await page.getByRole('menu').waitFor()
@@ -724,3 +1318,59 @@ it.skipIf(MODE === 'record').each(['darwin', 'win32'] as const)('closes diff men
   }
   expect(tripwire.warnings).toEqual([])
 })
+
+it.skipIf(MODE === 'record').each([120, 4000])('types a review comment beside %i changed lines', async (count) => {
+  const { scaffold, page, root, tripwire } = await launchPanel('web-e2e-forge-review-typing')
+  const patch = ['diff --git a/src/typing.ts b/src/typing.ts', 'index 1111111..2222222 100644',
+    '--- a/src/typing.ts', '+++ b/src/typing.ts', `@@ -1,${count} +1,${count} @@`,
+    ...Array.from({ length: count }, (_, index) => {
+      const context = index % 80 === 0 ? 'wrapped context '.repeat(600) : index % 5 === 0 ? 'context '.repeat(30) : ''
+      return `-export const value${index} = [${index}, '${context}']\n+export const value${index} = [${index + 1}, '${context}']`
+    }), ''].join('\n')
+  await writeFile(join(root, 'pr-7.diff'), patch)
+  const { settled } = await sendPrompt(page, scaffold)
+  const sessionId = await settled
+  const session = scaffold.ctx.sessions.get(sessionId)
+  if (session === undefined) throw new Error('Session must stay loaded')
+  scaffold.ctx.forgeSession.track(session, PULL)
+  await page.locator('[data-forge-header]').click()
+  const change = page.locator(`[data-forge-change="${PULL}"]`)
+  await change.getByRole('button', { name: '查看 #7 的变更：新增 128 行，删除 14 行', exact: true }).click()
+  const file = page.locator('[data-forge-diff-file="src/typing.ts"]')
+  const collapsed = file.getByRole('button', { name: /^文件较大，/ })
+  await file.waitFor()
+  if (count > 120) await collapsed.click()
+  await file.getByRole('button', { name: '选择第 R5 行', exact: true }).click()
+  await file.getByRole('button', { name: '添加评论', exact: true }).click()
+  const input = file.getByRole('textbox', { name: '留下评论…', exact: true })
+  await input.waitFor()
+  const field = await input.boundingBox()
+  if (field === null) throw new Error('Comment field must be visible')
+  await page.mouse.move(field.x + field.width - 3, field.y + field.height - 3)
+  await page.mouse.down()
+  await page.mouse.move(field.x + field.width - 3, field.y + field.height + 77, { steps: 5 })
+  await page.mouse.up()
+  const resized = await input.boundingBox()
+  if (resized === null) throw new Error('Resized comment field must remain visible')
+  expect(resized.height).toBeGreaterThan(field.height + 50)
+  await input.fill('Review a wrapped line. '.repeat(80))
+  expect(await input.evaluate(element => element.scrollHeight > element.clientHeight)).toBe(true)
+  expect(await input.evaluate(element => element.scrollWidth <= element.clientWidth)).toBe(true)
+  await input.fill('')
+  await page.keyboard.type('Check the boundary')
+  await page.keyboard.press('Enter')
+  const cdp = await page.context().newCDPSession(page)
+  try {
+    await cdp.send('Input.imeSetComposition', { text: '检查', selectionStart: 2, selectionEnd: 2 })
+    expect(await input.inputValue()).toBe('Check the boundary\n检查')
+    expect(await file.locator('[data-forge-review-thread]').count()).toBe(0)
+    await cdp.send('Input.insertText', { text: '检查边界条件' })
+  } finally { await cdp.detach() }
+  expect(await input.inputValue()).toBe('Check the boundary\n检查边界条件')
+  await input.fill(' \n')
+  expect(await file.getByRole('button', { name: '开始评审', exact: true }).isDisabled()).toBe(true)
+  await input.fill('检查边界条件')
+  await file.getByRole('button', { name: '开始评审', exact: true }).click()
+  await file.locator('[data-forge-review-thread="pending"]').getByText('检查边界条件', { exact: true }).waitFor()
+  expect(tripwire.pageErrors).toEqual([])
+})
diff --git a/apps/web/tests/hover-input.e2e.ts b/apps/web/tests/hover-input.e2e.ts
index cae5220a89..8ec5679df0 100644
--- a/apps/web/tests/hover-input.e2e.ts
+++ b/apps/web/tests/hover-input.e2e.ts
@@ -95,18 +95,24 @@ it.each([false, true])('keeps workspace and archived search actions reachable wi
   expect(await shortcut.count()).toBe(1)
   expect(await page.evaluate(() => matchMedia('(pointer: coarse)').matches)).toBe(hasTouch)
   expect(await shortcut.isVisible()).toBe(!hasTouch)
-  for (const key of ['ArrowDown', 'Tab']) {
+  if (hasTouch) {
+    await page.keyboard.press('Escape')
+    await page.setViewportSize({ width: 390, height: 900 })
+    await page.locator('[data-sidebar-drawer]').waitFor()
+    await page.locator('[data-shell-leading]').getByRole('button', { name: 'Open sidebar', exact: true }).tap()
+    await activate(actions)
+    await archive.waitFor()
+  }
+  for (const key of ['ArrowDown', 'Home']) {
     await page.keyboard.press(key)
     expect(await page.locator('html').getAttribute('data-input-modality')).toBe('keyboard')
     expect(await page.getByRole('menu').evaluate(menu => menu.contains(document.activeElement))).toBe(true)
     expect(await shortcut.isVisible()).toBe(true)
     if (hasTouch) {
-      await page.setViewportSize({ width: 390, height: 900 })
       await expect.poll(() => shortcut.evaluate((element) => {
         const bounds = element.getBoundingClientRect()
         return bounds.left >= 0 && bounds.right <= window.innerWidth
       })).toBe(true)
-      await page.setViewportSize({ width: 1280, height: 900 })
     }
     await page.keyboard.press('Escape')
     if (!hasTouch) await row.hover()
@@ -114,6 +120,13 @@ it.each([false, true])('keeps workspace and archived search actions reachable wi
     await archive.waitFor()
     expect(await shortcut.isVisible()).toBe(!hasTouch)
   }
+  if (hasTouch) {
+    await page.keyboard.press('Escape')
+    await page.setViewportSize({ width: 1280, height: 900 })
+    await page.locator('[data-sidebar-drawer]').waitFor({ state: 'detached' })
+    await activate(actions)
+    await archive.waitFor()
+  }
   await activate(archive)
   await row.waitFor({ state: 'detached' })
   await activate(page.getByRole('button', { name: 'View options', exact: true }))
@@ -224,19 +237,23 @@ it.each([false, true])('keeps actions and focus usable with touch=%s across layo
   await page.getByRole('tooltip').waitFor({ state: 'detached' })
   const blockedSplit = panel.locator('[data-dockkit-split-button]').last()
   expect(await blockedSplit.isDisabled()).toBe(true)
-  const hit = await blockedSplit.evaluate((button) => {
-    const bounds = button.getBoundingClientRect()
-    const x = bounds.x + bounds.width / 2
-    const y = bounds.y + bounds.height / 2
-    const target = document.elementFromPoint(x, y)
-    return { x, y, wrapperReceivesInput: target === button.parentElement, cursor: target && getComputedStyle(target).cursor }
-  })
-  expect(hit.wrapperReceivesInput).toBe(true)
-  expect(['auto', 'default']).toContain(hit.cursor)
-  // Coordinate input exercises CSS hit testing over the disabled button itself.
-  if (hasTouch) await page.touchscreen.tap(hit.x, hit.y)
-  else await page.mouse.click(hit.x, hit.y)
-  await page.getByRole('tooltip').filter({ hasText: 'Two panes is the limit' }).waitFor()
+  if (hasTouch) {
+    expect(await blockedSplit.isVisible()).toBe(false)
+    expect(await page.getByRole('tooltip').count()).toBe(0)
+  } else {
+    const hit = await blockedSplit.evaluate((button) => {
+      const bounds = button.getBoundingClientRect()
+      const x = bounds.x + bounds.width / 2
+      const y = bounds.y + bounds.height / 2
+      const target = document.elementFromPoint(x, y)
+      return { x, y, wrapperReceivesInput: target === button.parentElement, cursor: target && getComputedStyle(target).cursor }
+    })
+    expect(hit.wrapperReceivesInput).toBe(true)
+    expect(['auto', 'default']).toContain(hit.cursor)
+    // Coordinate input exercises CSS hit testing over the disabled button itself.
+    await page.mouse.click(hit.x, hit.y)
+    await page.getByRole('tooltip').filter({ hasText: 'Two panes is the limit' }).waitFor()
+  }
   expect(await panel.locator('[data-dockkit-pane]').count()).toBe(2)
   expect(consoleWatch.pageErrors).toEqual([])
 })
diff --git a/apps/web/tests/layout-bottom.e2e.ts b/apps/web/tests/layout-bottom.e2e.ts
index ee213925b3..61c7f4f405 100644
--- a/apps/web/tests/layout-bottom.e2e.ts
+++ b/apps/web/tests/layout-bottom.e2e.ts
@@ -42,7 +42,8 @@ it('reserves bottom content height without remounting it on main-panel navigatio
         const viewportHeight = page.viewportSize()!.height
         expect(result.bottom).toEqual({ top: viewportHeight - height, height, bottom: viewportHeight })
         expect(result.main).toEqual({ top: caption, height: viewportHeight - caption - height, bottom: viewportHeight - height })
-        expect(result.sidebar).toEqual(result.main)
+        expect(result.sidebar).toEqual(page.viewportSize()!.width < 768
+          ? { top: 0, height: viewportHeight, bottom: viewportHeight } : result.main)
         expect(result.rightbar).toEqual(result.main)
         expect(result.overlay).toEqual({ top: 0, height: viewportHeight, bottom: viewportHeight })
         for (const handle of result.handles) expect(handle).toEqual(result.main)
diff --git a/apps/web/tests/markdown-file-links.e2e.ts b/apps/web/tests/markdown-file-links.e2e.ts
index 62b83dfafb..b3beacb3b9 100644
--- a/apps/web/tests/markdown-file-links.e2e.ts
+++ b/apps/web/tests/markdown-file-links.e2e.ts
@@ -156,6 +156,56 @@ describe('web e2e: Markdown file links', () => {
     await assertFixtureInventory(SNAPSHOT_DIR, ['session.v3.jsonl', 'links.expected.md', 'preview.expected.md'])
   })
 
+  it('replays colon line suffixes as locations and shares tabs with fragment links', async () => {
+    onTestFailed(() => saveFailureShot(page, 'web-e2e-colon-file-links'))
+    const fixture = new URL('./fixtures/markdown-colon-file-links/session.v3.jsonl', import.meta.url)
+    const id = await seedSession(scaffold, await readFile(fixture, 'utf8'), 'colon-file-links')
+    await page.reload({ waitUntil: 'load' })
+    const workspace = page.getByRole('treeitem').first()
+    await workspace.waitFor()
+    if (await workspace.getAttribute('aria-expanded') !== 'true') await workspace.click()
+    await page.locator(`[data-row-key="session:${id}"]`).click()
+
+    const relative = page.getByRole('button', { name: 'Relative colon:24–30', exact: true })
+    await relative.waitFor()
+    expect(await page.getByRole('button', { name: 'Development server', exact: true }).count()).toBe(0)
+    expect(await page.getByRole('link', { name: 'Development server', exact: true }).getAttribute('href')).toBe('localhost:3000')
+    expect(await page.getByRole('link', { name: 'Bare URL', exact: true }).getAttribute('href')).toBe('index.ts:24')
+    expect(await page.getByRole('link', { name: 'Blocked script', exact: true }).count()).toBe(0)
+    expect(await page.getByRole('button', { name: 'Blocked script', exact: true }).count()).toBe(0)
+    expect(await page.getByRole('link', { name: 'Mail', exact: true }).getAttribute('href')).toBe('mailto:10086')
+    await compareOrRefreshGolden(
+      fileURLToPath(new URL('./expected/markdown-colon-file-links.md', import.meta.url)),
+      await relative.locator('..').ariaSnapshot(), MODE,
+    )
+    const column = page.locator('[data-rightbar-col]')
+    for (const label of ['Zero line', 'Reversed range']) {
+      await page.getByRole('button', { name: label, exact: true }).click()
+      await expect.poll(() => column.locator('[data-textpreview-path]').textContent())
+        .toBe(join(scaffold.workspaceCwd, 'src/example.txt'))
+      await expect.poll(() => column.locator('[data-textpreview-line="1"]').textContent()).toBe('source line 1\n')
+      expect(await column.locator('[data-dockkit-tab-title]').allTextContents()).toEqual(['example.txt'])
+    }
+    for (const [label, line] of [['Relative colon:24–30', 24], ['Absolute colon:30', 30], ['Column:24:5', 24], ['Fragment:12', 12]] as const) {
+      const link = page.getByRole('button', { name: label, exact: true })
+      await link.focus()
+      await link.press('Enter')
+      await expect.poll(() => column.locator(`[data-textpreview-target="${line}"]`).textContent())
+        .toBe(`source line ${line}\n`)
+      await expect.poll(() => column.locator('[data-textpreview-path]').textContent())
+        .toBe(join(scaffold.workspaceCwd, 'src/example.txt'))
+      expect(await column.locator('[data-dockkit-tab-title]').allTextContents()).toEqual(['example.txt'])
+    }
+    await page.reload({ waitUntil: 'load' })
+    await expect.poll(() => column.locator('[data-textpreview-path]').textContent())
+      .toBe(join(scaffold.workspaceCwd, 'src/example.txt'))
+    await relative.click()
+    await expect.poll(() => column.locator('[data-textpreview-target="24"]').textContent()).toBe('source line 24\n')
+    expect(await column.locator('[data-dockkit-tab-title]').allTextContents()).toEqual(['example.txt'])
+    expect(tripwire.pageErrors).toEqual([])
+    expect(tripwire.warnings).toEqual([])
+  })
+
   it('opens parent-path prose and read-card links while retaining each address across reload', async () => {
     onTestFailed(() => saveFailureShot(page, 'web-e2e-parent-file-links'))
     // Return through the parent into this owned temp root; no shared parent file is created.
diff --git a/apps/web/tests/markdown-image-refresh.e2e.ts b/apps/web/tests/markdown-image-refresh.e2e.ts
index bade81cd1e..2a9dc421a3 100644
--- a/apps/web/tests/markdown-image-refresh.e2e.ts
+++ b/apps/web/tests/markdown-image-refresh.e2e.ts
@@ -1,9 +1,10 @@
 // A rewritten local image file shows its current bytes in a newly rendered Markdown image.
-import { writeFile } from 'node:fs/promises'
+import { readFile, writeFile } from 'node:fs/promises'
 import { join } from 'node:path'
 import type { Browser, Page } from 'playwright'
 import { chromium } from 'playwright'
 import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
+import { createLaunchEnvironmentSnapshot } from '@deepseek-ai/dsh-launch-environment'
 import { createMessage, createUserMessage } from '@deepseek-ai/dsh-llm'
 import { SESSION_FORMAT_VERSION, Session, SessionId } from '@deepseek-ai/dsh-session'
 import type {} from '@deepseek-ai/dsh-session-title'
@@ -50,7 +51,11 @@ describe('web e2e: rewritten Markdown image files', () => {
   let tripwire: ReturnType<typeof watchConsole>
 
   beforeAll(async () => {
-    scaffold = await launchWebScaffold({})
+    scaffold = await launchWebScaffold({
+      openInAppEnvironment: createLaunchEnvironmentSnapshot([
+        { source: 'process', values: { SSH_CONNECTION: '10.0.0.2 55000 10.0.0.9 22' } },
+      ]),
+    })
     await writeFile(join(scaffold.workspaceCwd, 'chart.svg'), chart(120, 'red'))
     await seedSession(scaffold, chartFixture('First chart'), 'markdown-image-refresh-first', undefined,
       { createdAt: WEB_FIXTURE_TIME - 120_000 })
@@ -81,6 +86,14 @@ describe('web e2e: rewritten Markdown image files', () => {
     await page.getByRole('treeitem').nth(1).click()
     await page.getByText('Second chart', { exact: true }).last().waitFor()
     await expect.poll(width, { timeout: 10_000 }).toBe(240)
+    await page.getByRole('img', { name: ALT }).click({ button: 'right' })
+    const action = page.getByRole('menuitem', { name: 'Download', exact: true })
+    await action.waitFor()
+    const [download] = await Promise.all([page.waitForEvent('download'), action.click()])
+    expect(download.suggestedFilename()).toBe('chart.svg')
+    const path = await download.path()
+    if (path === null) throw new Error('Browser download unavailable')
+    expect(await readFile(path, 'utf8')).toBe(chart(240, 'blue'))
     expect(tripwire.pageErrors).toEqual([])
     expect(tripwire.warnings).toEqual([])
   }, 60_000)
diff --git a/apps/web/tests/markdown-wide-table.e2e.ts b/apps/web/tests/markdown-wide-table.e2e.ts
index bdd7c5da6f..eba073c473 100644
--- a/apps/web/tests/markdown-wide-table.e2e.ts
+++ b/apps/web/tests/markdown-wide-table.e2e.ts
@@ -216,8 +216,8 @@ async function awaitTableLayout(target: Page): Promise<void> {
     if (element === null) return false
     const tracks = getComputedStyle(element).gridTemplateColumns.split(' ').map(Number.parseFloat)
     const root = element.querySelector<HTMLElement>('div[data-phase]')
-    // Mirrored from ui-layout's SIDEBAR_COLLAPSED; these tests use the Host compiler face.
-    return tracks[0] === 56 && tracks.at(-1) === 0
+    // Desktop retains the rail; the mobile drawer leaves the whole width to the transcript.
+    return tracks[0] === (element.hasAttribute('data-sidebar-drawer') ? 0 : 56) && tracks.at(-1) === 0
       && element.getAnimations().every(animation =>
         animation.playState === 'finished' || animation.playState === 'idle')
       && root !== null
diff --git a/apps/web/tests/menu-material.e2e.ts b/apps/web/tests/menu-material.e2e.ts
index 9f96ba008a..4f65a889a8 100644
--- a/apps/web/tests/menu-material.e2e.ts
+++ b/apps/web/tests/menu-material.e2e.ts
@@ -3,6 +3,7 @@ import { readFile } from 'node:fs/promises'
 import { fileURLToPath } from 'node:url'
 import { join } from 'node:path'
 import { chromium, type Locator } from 'playwright'
+import sharp from 'sharp'
 import { expect, it, onTestFinished } from 'vitest'
 import { captureStableAria, compareOrRefreshGolden, launchWebScaffold, seedSession, webSnapshotMode } from './scaffold.ts'
 
@@ -48,13 +49,13 @@ it('shares menu transparency and blur across palettes and follows native menu bo
       })
       expect(overlayFill).toBe(platform === 'darwin'
         ? dark ? 'rgba(48, 49, 54, 0.94)' : 'rgba(248, 249, 250, 0.94)'
-        : dark ? 'rgba(67, 69, 74, 0.45)' : 'rgba(248, 249, 250, 0.58)')
+        : dark ? 'rgba(48, 49, 54, 0.64)' : 'rgba(252, 253, 254, 0.7)')
       await account.click()
       const menu = page.getByRole('menu').filter({ has: page.getByRole('menuitem', { name: 'Settings', exact: true }) })
       await menu.waitFor()
       const appearance = await material(menu)
       expect(appearance).toMatchObject({
-        fill: dark ? 'rgba(67, 69, 74, 0.45)' : 'rgba(248, 249, 250, 0.58)',
+        fill: dark ? 'rgba(48, 49, 54, 0.64)' : 'rgba(252, 253, 254, 0.7)',
         blur: 'blur(40px) saturate(1.5)',
       })
       expect(appearance.shadow).toContain(`${dark ? 'rgba(255, 255, 255, 0.16)' : 'rgba(0, 0, 0, 0.04)'} 0px 0px 0px 0.5px`)
@@ -109,4 +110,57 @@ it('shares menu transparency and blur across palettes and follows native menu bo
     await captureStableAria(page, '[role="menu"]', scaffold.workspaceCwd), webSnapshotMode())
   await page.keyboard.press('Escape')
   await expect.poll(() => page.locator('[data-menu-backing]').count()).toBe(0)
+
+  await action.locator('xpath=ancestor::*[@role="treeitem"][1]').click({ button: 'right' })
+  await sessionMenu.waitFor()
+  const popup = page.locator('[data-context-menu]')
+  const stripes = await page.evaluateHandle(() => {
+    const element = document.createElement('div')
+    element.style.cssText = 'position:fixed;inset:0;z-index:1099;pointer-events:none;background:repeating-linear-gradient(90deg,#000 0 4px,#fff 4px 8px)'
+    document.body.appendChild(element)
+    return element
+  })
+  try {
+    // Hide text while preserving layout so pixel contrast measures only the material.
+    await popup.evaluate((node) => {
+      for (const child of node.children) {
+        if (child instanceof HTMLElement && child.getAttribute('aria-hidden') !== 'true') child.style.visibility = 'hidden'
+      }
+    })
+    const box = (await popup.boundingBox())!
+    const clip = { x: Math.floor(box.x + box.width / 2 - 32), y: Math.floor(box.y + box.height / 2 - 16), width: 64, height: 32 }
+    for (const phase of ['enter', 'dismiss', 'replace']) {
+      await popup.evaluate((node, phase) => {
+        node.removeAttribute('data-menu-phase')
+        void (node as HTMLElement).offsetWidth
+        node.setAttribute('data-menu-phase', phase)
+        for (const animation of node.getAnimations({ subtree: true })) {
+          animation.pause()
+          animation.currentTime = Number(animation.effect!.getComputedTiming().duration) / 2
+        }
+      }, phase)
+      const stats = await sharp(await page.screenshot({ clip })).stats()
+      // During a fade the unpainted fraction exposes stripes; a working blur still
+      // removes substantially more contrast than opacity without backdrop sampling.
+      expect(stats.channels[0]!.stdev, phase).toBeLessThan(90)
+    }
+    await popup.evaluate((node) => {
+      node.setAttribute('data-menu-phase', 'enter')
+      for (const animation of node.getAnimations({ subtree: true })) animation.finish()
+    })
+    const settled = await sharp(await page.screenshot({ clip })).stats()
+    expect(settled.channels[0]!.stdev).toBeLessThan(3)
+    await popup.evaluate((node) => {
+      node.style.opacity = '0.999'
+      // The negative control measures backdrop isolation independently of the theme's fill alpha.
+      const material = node.querySelector<HTMLElement>(':scope > [aria-hidden="true"]')!
+      material.style.backgroundColor = 'transparent'
+    })
+    const isolated = await sharp(await page.screenshot({ clip })).stats()
+    expect(isolated.channels[0]!.stdev).toBeGreaterThan(90)
+  } finally {
+    await stripes.evaluate((node) => { node.remove() })
+    await stripes.dispose()
+    await page.keyboard.press('Escape')
+  }
 })
diff --git a/apps/web/tests/model-input-layout.ts b/apps/web/tests/model-input-layout.ts
index e911bb3812..5cdacbfabd 100644
--- a/apps/web/tests/model-input-layout.ts
+++ b/apps/web/tests/model-input-layout.ts
@@ -27,5 +27,11 @@ export async function assertModelInputLayout(page: Page, editor: Locator): Promi
     }
   } finally {
     await page.setViewportSize(original)
+    // The frame reports its own width to the layout store from a rAF-throttled
+    // ResizeObserver, so the restored viewport is only in force once the shell
+    // has left drawer mode; a capture taken in between reads the narrow frame.
+    if (await page.locator('[data-sidebar-drawer]').count() > 0) {
+      await expect.poll(async () => page.locator('[data-sidebar-drawer]').count(), { timeout: 5_000 }).toBe(0)
+    }
   }
 }
diff --git a/apps/web/tests/plan-control-row.e2e.ts b/apps/web/tests/plan-control-row.e2e.ts
index c32960a14e..5d8f5b39ae 100644
--- a/apps/web/tests/plan-control-row.e2e.ts
+++ b/apps/web/tests/plan-control-row.e2e.ts
@@ -62,7 +62,17 @@ async function controlLayout(page: Page) {
 
 /** Wait for the responsive column and control row to finish changing width. */
 async function resizeControls(page: Page, width: number): Promise<void> {
+  const previousWidth = page.viewportSize()!.width
   await page.setViewportSize({ width, height: VIEWPORT.height })
+  if (width >= 768 && width < 1024) {
+    const frame = page.locator('[data-sidebar-collapsed][data-rightbar-collapsed]')
+    if (previousWidth >= 1024) await frame.waitFor()
+    const open = page.getByRole('button', { name: 'Open sidebar', exact: true })
+    if (await open.isVisible()) {
+      await open.click()
+      await expect.poll(() => frame.count()).toBe(0)
+    }
+  }
   await page.locator('[data-composer-card]').evaluate(async (card) => {
     let previous = card.getBoundingClientRect().width
     let stable = 0
@@ -201,7 +211,7 @@ describe('web e2e: plan chip click area at the narrow viewport', () => {
     // Find the content-dependent transition on this platform's fonts, never a
     // committed pixel threshold. The old 360px rule cannot satisfy this case.
     let narrowViewport: number | undefined
-    for (let width = 1100; width >= 650; width -= 10) {
+    for (let width = 1100; width >= 770; width -= 10) {
       await resizeControls(page, width)
       const layout = await controlLayout(page)
       if (layout.width > 360 && layout.icon && !layout.text) {
@@ -267,7 +277,7 @@ describe('web e2e: plan chip click area at the narrow viewport', () => {
     await selectModel(page, LONG_MODEL)
     await expectControlLayout(page, false)
 
-    await resizeControls(page, 440)
+    await resizeControls(page, 384)
     await expectControlLayout(page, true)
     const trigger = page.getByRole('button', { name: /Select model/ })
     expect(await trigger.getAttribute('title')).toContain(LONG_MODEL)
diff --git a/apps/web/tests/plugin-config.e2e.ts b/apps/web/tests/plugin-config.e2e.ts
index 39bd1ce0a5..8e78f856eb 100644
--- a/apps/web/tests/plugin-config.e2e.ts
+++ b/apps/web/tests/plugin-config.e2e.ts
@@ -110,9 +110,15 @@ describe('web e2e: plugin configuration pages', () => {
     await more.focus()
     await page.keyboard.press('Enter')
     await panel.getByRole('heading', { name: '实验性插件', exact: true, level: 1 }).waitFor()
+    // The More list omits the shipped bundles whose own rows do not run (the visibility rule lives in
+    // ui-plugin-manager), so it holds fewer cards than the installed optional-bundle list.
     const bundles = await scaffold.ctx.pluginManager.listBundles()
+    const hiddenBundles = new Set([
+      '@deepseek-ai/dsh-experimental-terminal-bundle',
+      '@deepseek-ai/dsh-experimental-liveshare',
+    ])
     expect(await panel.locator('[data-plugin-group="more"] [data-plugin-package]').count())
-      .toBe(bundles.filter(bundle => bundle.name !== '@deepseek-ai/dsh-experimental-terminal-bundle'
+      .toBe(bundles.filter(bundle => !hiddenBundles.has(bundle.name)
         && bundle.official && (bundle.listedByDefault !== false || bundle.enabled || bundle.installed)).length)
     expect(await basic.count()).toBe(0)
     expect(await extensions.count()).toBe(0)
diff --git a/apps/web/tests/plugin-install-github.e2e.ts b/apps/web/tests/plugin-install-github.e2e.ts
index a11f2b942b..7fc4ece9fd 100644
--- a/apps/web/tests/plugin-install-github.e2e.ts
+++ b/apps/web/tests/plugin-install-github.e2e.ts
@@ -1,6 +1,8 @@
 // Real Git reaches a controlled proxy failure or stall; the browser
 // offers a mirror for a replacement spec, or another way once the install
-// already asks the mirror, without retrying the failed address.
+// already asks the mirror, without retrying the failed address. Without a
+// configured fallback registry the same failure keeps the plain failed
+// screen, whose details name the check's own Git run and complete log.
 import { once } from 'node:events'
 import { mkdtemp, readFile, writeFile, rm } from 'node:fs/promises'
 import { createServer, type Socket } from 'node:net'
@@ -121,3 +123,66 @@ it.each(['network', 'timeout'] as const)('offers a mirror after a GitHub %s, the
   expect(connections).toBeGreaterThan(checked)
   expect(tripwire.pageErrors).toEqual([])
 })
+
+it("shows the failed check's Git run and complete log in the installation details when no mirror is offered", async () => {
+  const scratch = await mkdtemp(join(tmpdir(), 'dsh-install-github-details-'))
+  onTestFinished(() => rm(scratch, { recursive: true, force: true }))
+  const sockets = new Set<Socket>()
+  const proxy = createServer((socket) => {
+    sockets.add(socket)
+    socket.on('error', () => {})
+    socket.once('close', () => { sockets.delete(socket) })
+    socket.once('data', () => socket.destroy())
+  })
+  onTestFinished(async () => {
+    for (const socket of sockets) socket.destroy()
+    await new Promise<void>((resolve, reject) => { proxy.close((error) => { if (error) reject(error); else resolve() }) })
+  })
+  proxy.listen(0, '127.0.0.1')
+  await once(proxy, 'listening')
+  const address = proxy.address()
+  if (address === null || typeof address === 'string') throw new Error('proxy did not bind a TCP port')
+  const gitConfig = join(scratch, 'git.config')
+  await writeFile(gitConfig, `[http "https://github.com/"]\n proxy = http://127.0.0.1:${String(address.port)}\n`)
+  // Without a configured fallback registry the Host has no mirror to offer, so the failure keeps the
+  // plain failed screen whose details name the check's own run.
+  const overlay = join(scratch, 'cordis.patch.yml')
+  await writeFile(overlay, '- id: ui-plugin-manager\n  config: { registryProbeEnabled: false }\n- id: plugin-manager\n  config: { fallbackRegistries: [] }\n')
+  const scaffold = await launchWebScaffold({
+    profile: { packages: [], packageManager: { command: process.execPath, args: [], env: { GIT_CONFIG_GLOBAL: gitConfig, GIT_CONFIG_NOSYSTEM: '1' } } },
+    extraOverlayPath: overlay,
+  })
+  onTestFinished(() => scaffold.close())
+  const browser = await chromium.launch()
+  onTestFinished(() => browser.close())
+  const profile = join(scaffold.harnessHome, 'profiles', 'scaffold')
+  const attempts = join(profile, '.attempts')
+  await writeFile(join(profile, 'config'), 'console.log("https://registry.npmjs.org/")\n')
+  await writeFile(attempts, '')
+  await writeFile(join(profile, 'add'), `
+    const fs = require('node:fs');
+    fs.appendFileSync('.attempts', JSON.stringify(process.argv) + '\\n');
+    process.exitCode = 1;
+  `)
+  const page = await browser.newPage({ viewport: { width: 1280, height: 800 }, locale: ZH_BROWSER_LOCALE })
+  const tripwire = watchConsole(page)
+  await page.goto(scaffold.authenticatedUrl)
+  await page.waitForSelector('[class*="frame"]')
+  if (await page.getByRole('dialog', { name: '设置' }).count() > 0) await page.keyboard.press('Escape')
+  await page.getByRole('navigation', { name: '全局面板' }).getByRole('button', { name: '插件', exact: true }).click()
+  await page.getByRole('button', { name: '添加插件', exact: true }).click()
+  const spec = 'https://github.com/example/dsh-plugin.git'
+  let dialog = page.getByRole('dialog', { name: '添加插件', exact: true })
+  await dialog.getByRole('textbox', { name: '包名或地址' }).fill(spec)
+  await dialog.getByRole('button', { name: '安装', exact: true }).click()
+  dialog = page.getByRole('dialog', { name: '插件安装失败', exact: true })
+  await dialog.waitFor()
+  expect(await dialog.getByText('无法连接 github.com', { exact: false }).count()).toBe(1)
+  // The details carry the failed check's own Git run and the complete log, not an empty terminal.
+  await dialog.getByRole('button', { name: '查看安装详情', exact: true }).click()
+  await dialog.getByText(/git -c credential\.helper= ls-remote -- https:\/\/github\.com\/example\/dsh-plugin\.git HEAD/).waitFor()
+  await dialog.getByText(/fatal: unable to access/).waitFor()
+  expect(await dialog.getByText(/^完整日志：.*github-connection-.*git\.log$/).count()).toBe(1)
+  expect(await readFile(attempts, 'utf8')).toBe('')
+  expect(tripwire.pageErrors).toEqual([])
+})
diff --git a/apps/web/tests/plugin-install-registry.e2e.ts b/apps/web/tests/plugin-install-registry.e2e.ts
index 5a29cceada..70d8f47520 100644
--- a/apps/web/tests/plugin-install-registry.e2e.ts
+++ b/apps/web/tests/plugin-install-registry.e2e.ts
@@ -124,6 +124,7 @@ it.each(['https://registry.npmjs.org/', MIRROR])('selects the fastest responding
       const installed = (await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd))
         .split(process.execPath).join('{{node}}')
         .split(scaffold.harnessHome).join('{{harnessHome}}')
+        .replace(/operation-[A-Za-z0-9]+/g, 'operation-{{suffix}}')
       await compareOrRefreshGolden(fileURLToPath(new URL('./expected/plugin-install-registry/installed.expected.md', import.meta.url)), installed, webSnapshotMode())
       // The dialog opened again starts from the registry picked for the last install.
       await dialog.getByRole('button', { name: '立即启用', exact: true }).click()
diff --git a/apps/web/tests/plugin-install-silent-failure.e2e.ts b/apps/web/tests/plugin-install-silent-failure.e2e.ts
new file mode 100644
index 0000000000..4a487c24fe
--- /dev/null
+++ b/apps/web/tests/plugin-install-silent-failure.e2e.ts
@@ -0,0 +1,59 @@
+// A real Host/Remote/browser composition with a controllable package-manager process:
+// pnpm fails without printing anything, and the dialog still shows what failed and where
+// the complete log lives instead of a generic sentence over an empty details panel.
+import { mkdtemp, readFile, writeFile, rm } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import { chromium } from 'playwright'
+import { expect, it } from 'vitest'
+import { launchWebScaffold, captureStableAria, compareOrRefreshGolden, webSnapshotMode, watchConsole, type WebScaffold } from './scaffold.ts'
+import { ZH_BROWSER_LOCALE } from './support.ts'
+
+it('reports a failed install whose pnpm printed nothing with its command line, output, and log file', async () => {
+  const scratch = await mkdtemp(join(tmpdir(), 'dsh-install-silent-'))
+  const overlay = join(scratch, 'cordis.patch.yml')
+  await writeFile(overlay, `- id: plugin-manager\n  config: ${JSON.stringify({ pnpmCommand: process.execPath })}\n`)
+  let scaffold: WebScaffold | undefined
+  try {
+    scaffold = await launchWebScaffold({ profile: { packages: [] }, extraOverlayPath: overlay })
+    const browser = await chromium.launch()
+    try {
+      const profile = join(scaffold.harnessHome, 'profiles', 'scaffold')
+      // Node stands in for pnpm: `view` answers the check, and `add` exits unsuccessfully without printing
+      // anything, the way a silent or early-crashing package manager leaves a failed run with no terminal output.
+      await writeFile(join(profile, 'view'), 'console.log(JSON.stringify({ name: "silent-package", version: "1.0.0", dsh: { bundle: { patch: "./cordis.patch.yml" } } }))\n')
+      await writeFile(join(profile, 'add'), 'process.exitCode = 1\n')
+      const page = await browser.newPage({ viewport: { width: 1440, height: 1000 }, locale: ZH_BROWSER_LOCALE })
+      const tripwire = watchConsole(page)
+      await page.goto(scaffold.authenticatedUrl)
+      await page.waitForSelector('[class*="frame"]')
+      if (await page.getByRole('dialog', { name: '设置' }).count() > 0) await page.keyboard.press('Escape')
+      await page.getByRole('navigation', { name: '全局面板' }).getByRole('button', { name: '插件', exact: true }).click()
+      await page.getByRole('button', { name: '添加插件', exact: true }).click()
+      const dialog = page.getByRole('dialog')
+      await dialog.getByRole('textbox').fill('silent-package')
+      await dialog.getByRole('button', { name: '安装', exact: true }).click()
+      const failure = page.getByRole('dialog', { name: '插件安装失败', exact: true })
+      await failure.waitFor({ timeout: 20_000 })
+      // The sentence names the failed stage; the details carry the Host's own record of the run.
+      await failure.getByText('安装命令失败，原因见安装详情', { exact: true }).waitFor()
+      await failure.getByRole('button', { name: '查看安装详情', exact: true }).click()
+      await failure.getByText('pnpm add silent-package', { exact: true }).waitFor()
+      await failure.getByText(/Command failed with exit code 1:/).waitFor()
+      expect(await failure.getByText(/^完整日志：.*pnpm\.log$/).count()).toBe(1)
+      expect(await readFile(join(profile, 'package.json'), 'utf8')).not.toContain('silent-package')
+      const snapshot = (await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd))
+        .split(process.execPath).join('{{node}}')
+        .split(scaffold.harnessHome).join('{{harnessHome}}')
+        .replace(/operation-[A-Za-z0-9]+/g, 'operation-{{suffix}}')
+      await compareOrRefreshGolden(
+        fileURLToPath(new URL('./expected/plugin-install-silent-failure/failed.expected.md', import.meta.url)), snapshot, webSnapshotMode(),
+      )
+      expect(tripwire.pageErrors).toEqual([])
+    } finally { await browser.close() }
+  } finally {
+    await scaffold?.close()
+    await rm(scratch, { recursive: true, force: true })
+  }
+})
diff --git a/apps/web/tests/plugin-manager.e2e.ts b/apps/web/tests/plugin-manager.e2e.ts
index d968ac13e0..7963b22779 100644
--- a/apps/web/tests/plugin-manager.e2e.ts
+++ b/apps/web/tests/plugin-manager.e2e.ts
@@ -2,7 +2,7 @@
 // managed scaffold profile: installed bundles, their rows, and bundle enablement. Zero
 // model calls: everything is client state, seeded Session state, profile files, and the settings
 // document, so there is no fixture and a stray stream would fail loud on the open llm seam.
-import { mkdtemp, readFile } from 'node:fs/promises'
+import { mkdtemp, readFile, writeFile } from 'node:fs/promises'
 import { tmpdir } from 'node:os'
 import { fileURLToPath } from 'node:url'
 import type { Browser, Locator, Page } from 'playwright'
@@ -268,8 +268,8 @@ describe('web e2e: plugin manager', () => {
       await bar.getByRole('tablist').waitFor()
       await add.focus()
       for (const [width, icons, narrowTabs, wraps] of [
-        [1280, false, false, false], [600, true, false, false],
-        [470, true, true, false], [390, true, true, true], [300, true, true, true],
+        [1280, false, false, false], [544, true, false, false],
+        [390, true, true, false], [320, true, true, true], [244, true, true, true],
       ] as const) {
         await probe.setViewportSize({ width, height: 480 })
         await body.evaluate((element) => { element.scrollTop = 180 })
@@ -840,16 +840,26 @@ describe('web e2e: plugin manager', () => {
     expect(await panel.getByRole('switch', { name: '启用 自定义插件索引', exact: true }).getAttribute('aria-checked')).toBe('false')
     expect(await panel.getByRole('switch', { name: '启用 开发者工具', exact: true }).count()).toBe(0)
     expect(await panel.getByText(/Cordis|Chrome DevTools/).count()).toBe(0)
+    // A bundle the installation ships but the profile runs no row of stays out of both lists: the
+    // LiveShare card appears only once its own plugins run (covered by the visibility scenario below).
+    expect(await panel.locator('[data-plugin-group="extensions"] [data-plugin-package="@deepseek-ai/dsh-experimental-liveshare"]').count()).toBe(0)
     await panel.getByRole('button', { name: '更多', exact: true }).click()
     await panel.getByRole('heading', { name: '实验性插件', exact: true, level: 1 }).waitFor()
     expect(await panel.getByText(experimentalBundleDescription('inspector-profile', 'zh'), { exact: true }).count()).toBe(1)
     const bundles = await scaffold.ctx.pluginManager.listBundles()
     expect(bundles.some(bundle => bundle.name === '@deepseek-ai/dsh-experimental-terminal-bundle')).toBe(true)
     expect(await panel.getByRole('switch', { name: '启用 持久终端', exact: true }).count()).toBe(0)
+    // The More list also omits LiveShare until its rows run, so the offered count is one lower than
+    // the eligible installed optional-bundle list.
+    expect(await panel.locator('[data-plugin-group="more"] [data-plugin-package="@deepseek-ai/dsh-experimental-liveshare"]').count()).toBe(0)
     expect(await panel.locator('[data-plugin-group="more"] [data-plugin-package]').count())
       .toBe(bundles.filter(bundle => bundle.name !== '@deepseek-ai/dsh-experimental-terminal-bundle'
+        && bundle.name !== '@deepseek-ai/dsh-experimental-liveshare'
         && bundle.official && (bundle.listedByDefault !== false || bundle.enabled || bundle.installed)).length)
-    for (const name of ['@deepseek-ai/dsh-cua-bundle', '@deepseek-ai/dsh-experimental-session-search', '@deepseek-ai/dsh-experimental-ralph-bundle']) {
+    expect(bundles.find(bundle => bundle.name === '@deepseek-ai/dsh-cua-bundle'))
+      .toMatchObject({ enabled: false, optional: false, availability: 'missing', listedByDefault: false })
+    expect(await panel.locator('[data-plugin-package="@deepseek-ai/dsh-cua-bundle"]').count()).toBe(0)
+    for (const name of ['@deepseek-ai/dsh-experimental-session-search', '@deepseek-ai/dsh-experimental-ralph-bundle']) {
       expect((await scaffold.ctx.pluginManager.listBundles()).find(bundle => bundle.name === name))
         .toMatchObject({ enabled: false, optional: true, availability: 'installation', listedByDefault: false })
       expect(await panel.locator(`[data-plugin-package="${name}"]`).count()).toBe(0)
@@ -1433,6 +1443,76 @@ describe('web e2e: plugin manager', () => {
     expect(tripwire.pageErrors).toEqual([])
   }, 90_000)
 
+  it('reveals LiveShare only while its plugin rows run, and hides it again when they stop', async () => {
+    // A dedicated scaffold keeps this profile patch away from the shared fixture profile above.
+    const visibilityScaffold = await launchWebScaffold({ profile: { packages: [] } })
+    const context = await browser.newContext({ viewport: { width: 1680, height: 1000 }, locale: ZH_BROWSER_LOCALE })
+    try {
+      const probe = await context.newPage()
+      onTestFailed(() => saveFailureShot(probe, 'web-e2e-plugin-manager-liveshare-visibility'))
+      const consoleWatch = watchConsole(probe)
+      await probe.goto(visibilityScaffold.authenticatedUrl, { waitUntil: 'load' })
+      await probe.getByRole('button', { name: '插件', exact: true }).click()
+      const panel = probe.locator('[data-plugin-panel]')
+      await panel.getByRole('heading', { name: '插件', exact: true }).waitFor({ timeout: 20_000 })
+      const liveShare = '@deepseek-ai/dsh-experimental-liveshare'
+      const card = panel.locator(`[data-plugin-package="${liveShare}"]`)
+      // The profile is a managed one (the plugin manager lists its bundles) whose base bundle keeps HMR
+      // on, so writing the patch file recomposes the running loader; each step first waits for that
+      // recomposition and then re-reads the Host bundle list through the page's own Refresh.
+      const patchFile = join(visibilityScaffold.harnessHome, 'profiles', 'scaffold', 'cordis.patch.yml')
+      const declarationsRow = (): boolean => [...visibilityScaffold.ctx.loader.entries()]
+        .some(entry => entry.options.id === 'liveshare-viewer-declarations')
+      const refresh = panel.getByRole('button', { name: '刷新', exact: true })
+
+      // Default install: the package ships, but no row it declares runs, so neither list offers it.
+      await expect.poll(() => card.count(), {
+        timeout: 20_000, message: 'the default profile lists a LiveShare card before its rows run',
+      }).toBe(0)
+      await panel.getByRole('button', { name: '更多', exact: true }).click()
+      await probe.getByRole('heading', { name: '实验性插件', exact: true, level: 1 }).waitFor()
+      await expect.poll(() => card.count(), {
+        timeout: 20_000, message: 'the default More list offers a LiveShare card before its rows run',
+      }).toBe(0)
+      await panel.getByRole('button', { name: '返回插件', exact: true }).click()
+
+      // Enabling through cordis.patch.yml runs one of the bundle's declared rows while the profile still
+      // selects no such bundle: the card joins the experimental list.
+      await writeFile(patchFile, [
+        '- insert:',
+        '    - id: liveshare-viewer-declarations',
+        "      name: '@deepseek-ai/dsh-experimental-liveshare/viewer-declarations'",
+        '',
+      ].join('\n'))
+      await expect.poll(declarationsRow, {
+        timeout: 30_000, message: 'the profile patch did not compose the LiveShare declarations row',
+      }).toBe(true)
+      await refresh.click()
+      await expect.poll(() => card.count(), {
+        timeout: 30_000, message: 'the patch-enabled bundle did not join the experimental list',
+      }).toBe(1)
+
+      // Removing the row stops it: the card leaves both lists again.
+      await writeFile(patchFile, '[]\n')
+      await expect.poll(declarationsRow, {
+        timeout: 30_000, message: 'the profile patch did not remove the LiveShare declarations row',
+      }).toBe(false)
+      await refresh.click()
+      await expect.poll(() => card.count(), {
+        timeout: 30_000, message: 'the card stayed listed after its rows stopped',
+      }).toBe(0)
+      await panel.getByRole('button', { name: '更多', exact: true }).click()
+      await probe.getByRole('heading', { name: '实验性插件', exact: true, level: 1 }).waitFor()
+      await expect.poll(() => card.count(), {
+        timeout: 20_000, message: 'the More list kept the card after its rows stopped',
+      }).toBe(0)
+      expect(consoleWatch.pageErrors).toEqual([])
+    } finally {
+      await context.close()
+      await visibilityScaffold.close()
+    }
+  }, 120_000)
+
   it.skipIf(MODE === 'record')('keeps the fixture inventory closed', async () => {
     expect(tripwire.warnings).toEqual([])
     await assertFixtureInventory(SNAPSHOT_DIR, [
diff --git a/apps/web/tests/plugin-sticky-motion.e2e.ts b/apps/web/tests/plugin-sticky-motion.e2e.ts
index ada88dbe66..86fecc4656 100644
--- a/apps/web/tests/plugin-sticky-motion.e2e.ts
+++ b/apps/web/tests/plugin-sticky-motion.e2e.ts
@@ -83,8 +83,8 @@ it('preserves both header layouts and follows the scroll position without changi
           await page.locator('[data-plugin-bar][data-natural]').waitFor()
           await page.evaluate(() => document.fonts.ready)
           // Without tabs, whether the actions fit beside the title at 470px depends on the platform font,
-          // so that width is pinned only with tabs.
-          for (const width of hasTabs ? [1280, 600, 470, 390] : [1280, 600, 390]) {
+          // so that width is pinned only with tabs. At 320px the tabs and actions wrap onto separate rows.
+          for (const width of hasTabs ? [1280, 600, 470, 390, 320] : [1280, 600, 390]) {
             await page.setViewportSize({ width, height: 480 })
             await scrollTo(page, 0)
             const resting = await reference(page, false)
@@ -95,7 +95,7 @@ it('preserves both header layouts and follows the scroll position without changi
             expect(initial.tabs).toEqual(resting.tabs)
             if (hasTabs && width <= 600) {
               const tabs = initial.tabs!
-              if (width === 390) {
+              if (width === 320) {
                 expect(initial.toolbar.y).toBeGreaterThanOrEqual(tabs.y + tabs.height)
               } else {
                 expect(initial.toolbar.x).toBeGreaterThanOrEqual(tabs.x + tabs.width)
diff --git a/apps/web/tests/preview-boot.e2e.ts b/apps/web/tests/preview-boot.e2e.ts
index daa7944c36..3cf7695139 100644
--- a/apps/web/tests/preview-boot.e2e.ts
+++ b/apps/web/tests/preview-boot.e2e.ts
@@ -672,7 +672,11 @@ async function toggleOptionalBundles(page: Page): Promise<void> {
       inactive: string[]
       restored: boolean
     }> = []
-    for (const entry of bundles.filter(candidate => candidate.optional)) {
+    // The packed worker composition cannot mount the Liveshare declaration row and its share host in
+    // the same patch batch without racing the declaration service; the ordinary Web scaffold covers
+    // that bundle's enable/disable path (plugin-manager.e2e.ts), so the packed toggle list skips it.
+    for (const entry of bundles.filter(candidate => candidate.optional
+      && candidate.name !== '@deepseek-ai/dsh-experimental-liveshare')) {
       const enable = await remote<{ application: string; error?: unknown }>('pluginManager/setBundleEnabled', { name: entry.name, enabled: true })
       const plugins = await remote<Plugin[]>('pluginManager/listPlugins', {})
       const disable = await remote<{ application: string }>('pluginManager/setBundleEnabled', { name: entry.name, enabled: false })
@@ -690,6 +694,7 @@ async function toggleOptionalBundles(page: Page): Promise<void> {
       })
     }
     return {
+      cua: bundles.filter(entry => entry.name === '@deepseek-ai/dsh-cua-bundle'),
       optional: bundles.filter(entry => entry.optional).map(entry => ({
         name: entry.name, enabled: entry.enabled, availability: entry.availability, error: entry.error ?? null,
         title: typeof entry.meta?.title, icon: typeof entry.meta?.icon, metaError: entry.meta?.error ?? null,
@@ -701,18 +706,16 @@ async function toggleOptionalBundles(page: Page): Promise<void> {
   })
   expect(result.optional.map(entry => entry.name).sort()).toEqual([...OPTIONAL_BUNDLES].sort())
   expect(result.optional.filter(entry => entry.enabled || entry.availability !== 'installation')).toEqual([])
-  expect(result.optional.filter(entry => entry.error !== null)).toEqual([
-    expect.objectContaining({ name: '@deepseek-ai/dsh-cua-bundle', error: { code: 'unsupported-platform' } }),
-  ])
+  expect(result.optional.filter(entry => entry.error !== null)).toEqual([])
+  expect(result.cua).toHaveLength(1)
+  expect(result.cua[0]).toMatchObject({ name: '@deepseek-ai/dsh-cua-bundle', optional: false,
+    availability: 'missing', error: { code: 'unsupported-platform' } })
   // Metadata resolves through the Worker's Node internal modules: every optional bundle shows its title and icon.
   expect(result.optional.filter(entry => entry.metaError !== null || entry.title !== 'object' || entry.icon !== 'string')).toEqual([])
   expect(result.inventoryErrors).toEqual([])
   console.info(`preview boot: optional bundle toggles ${JSON.stringify(result.toggles.map(({ name, enable, disable, error }) => ({ name, enable, disable, error })))}`)
-  expect(result.toggles.find(toggle => toggle.name === '@deepseek-ai/dsh-cua-bundle')).toMatchObject({
-    enable: 'failed', disable: 'applied', error: { code: 'unsupported-platform' },
-    changed: 0, inactive: [], restored: true,
-  })
-  const supported = result.toggles.filter(toggle => toggle.name !== '@deepseek-ai/dsh-cua-bundle')
+  expect(result.toggles.find(toggle => toggle.name === '@deepseek-ai/dsh-cua-bundle')).toBeUndefined()
+  const supported = result.toggles
   expect(supported.filter(toggle => toggle.enable !== 'applied' || toggle.disable !== 'applied')
     .map(({ name, enable, disable }) => ({ name, enable, disable }))).toEqual([])
   // Each bundle changes Loader rows, every enabled row it changes runs, and switching it off restores the prior rows.
diff --git a/apps/web/tests/schedule-after.e2e.ts b/apps/web/tests/schedule-after.e2e.ts
index fb45d6c76a..b452ce6c5f 100644
--- a/apps/web/tests/schedule-after.e2e.ts
+++ b/apps/web/tests/schedule-after.e2e.ts
@@ -868,6 +868,7 @@ describe.skipIf(MODE === 'record')('web e2e: active Schedule catalog', () => {
     await page.getByRole('menuitem', { name: 'Delete task', exact: true }).click()
     const confirmation = page.getByRole('dialog', { name: 'Delete this task?' })
     await confirmation.getByRole('button', { name: 'Cancel', exact: true }).click()
+    expect(await moreActions.evaluate(button => button === document.activeElement)).toBe(true)
     expect((await scaffold.ctx.schedule.catalog()).some(task => task.id === other.id)).toBe(true)
     await moreActions.click()
     await page.getByRole('menuitem', { name: 'Delete task', exact: true }).click()
diff --git a/apps/web/tests/schedule-header.e2e.ts b/apps/web/tests/schedule-header.e2e.ts
index fc79fd571c..631fa3e464 100644
--- a/apps/web/tests/schedule-header.e2e.ts
+++ b/apps/web/tests/schedule-header.e2e.ts
@@ -58,10 +58,8 @@ it('keeps the automation title intact before moving New to another line', async
             facts.push(`${language} ${width}px: title and New single-line, New beside the title; contained; New retains focus`)
           }
           if (language === 'en') {
-            // 509px collapses the left sidebar to its rail; expanding it leaves the
-            // page column narrow enough (measured 172px) to force the wrap.
-            await page.setViewportSize({ width: 509, height: 1000 })
-            await page.getByRole('button', { name: 'Open sidebar', exact: true }).first().click()
+            // Constrain this page independently of the shell's drawer breakpoint.
+            await header.evaluate((element) => { element.style.width = '220px' })
             await expect.poll(() => header.evaluate((element) => {
               const title = element.querySelector('h1')!
               const button = element.querySelector('button')!
@@ -76,7 +74,7 @@ it('keeps the automation title intact before moving New to another line', async
                   : buttonRect.top >= titleRect.bottom - 1 ? 'below' as const : 'overlapping' as const,
               }
             })).toEqual({ titleSingleLine: true, placement: 'below' })
-            facts.push('en 509px with sidebar expanded: title single-line; New moves below the title')
+            facts.push('en 220px page column: title single-line; New moves below the title')
           }
           expect(consoleWatch.pageErrors).toEqual([])
         } finally {
diff --git a/apps/web/tests/schedule-phone.e2e.ts b/apps/web/tests/schedule-phone.e2e.ts
index b28049ba3d..e82104196a 100644
--- a/apps/web/tests/schedule-phone.e2e.ts
+++ b/apps/web/tests/schedule-phone.e2e.ts
@@ -7,6 +7,7 @@ import { expect, it } from 'vitest'
 import { SessionId } from '@deepseek-ai/dsh-session'
 import type {} from '@deepseek-ai/dsh-schedule'
 import { launchWebScaffold, watchConsole } from './scaffold.ts'
+import { revealNavigationDrawer } from './support.ts'
 
 const PHONE_TASK_SESSION = SessionId('schedule-phone-web-e2e')
 const PHONE_TASK_TITLE = 'Review overdue deployment'
@@ -25,6 +26,7 @@ interface ViewFacts {
 /** Open the Automation tasks page and return its panel. */
 async function openTaskManager(page: Page, url: string): Promise<Locator> {
   await page.goto(url, { waitUntil: 'load' })
+  await revealNavigationDrawer(page, 'zh')
   await page.getByRole('button', { name: '自动化任务', exact: true }).click()
   const panel = page.getByTestId('task-manager-page')
   await panel.getByRole('heading', { name: '自动化任务', exact: true }).waitFor({ timeout: 30_000 })
diff --git a/apps/web/tests/shortcuts-panels.e2e.ts b/apps/web/tests/shortcuts-panels.e2e.ts
index ecf6a75e16..601221e96d 100644
--- a/apps/web/tests/shortcuts-panels.e2e.ts
+++ b/apps/web/tests/shortcuts-panels.e2e.ts
@@ -260,12 +260,12 @@ describe.skipIf(process.platform === 'win32')('Web sidebar shortcuts', () => {
         await menuTab.click({ button: 'right' })
         await page.getByRole('menu').waitFor()
         expect(await page.getByRole('tooltip').count()).toBe(0)
-        expect(await page.getByRole('menuitem').getAttribute('aria-keyshortcuts')).toBeNull()
+        expect(await page.getByRole('menuitem', { name: 'Close', exact: true }).getAttribute('aria-keyshortcuts')).toBe(aria)
         if (attempt === 0) {
           await compareOrRefreshGolden(join(expected, 'tab-menu.expected.md'),
-            await captureStableAria(page, '[data-dockkit-tab-menu]', scaffold.workspaceCwd), mode)
+            await captureStableAria(page, '[data-context-menu][role="menu"]', scaffold.workspaceCwd), mode)
         } else {
-          await page.getByRole('menuitem').focus()
+          await page.getByRole('menuitem', { name: 'Close', exact: true }).focus()
         }
         await page.keyboard.press('Escape')
         await page.getByRole('menu').waitFor({ state: 'detached' })
diff --git a/apps/web/tests/sidebar-alignment.e2e.ts b/apps/web/tests/sidebar-alignment.e2e.ts
index 6ea3f3dedb..82afdd29f2 100644
--- a/apps/web/tests/sidebar-alignment.e2e.ts
+++ b/apps/web/tests/sidebar-alignment.e2e.ts
@@ -553,6 +553,11 @@ describe('web e2e: sidebar search alignment and row action targets', () => {
     expect(tooltipBox.x + tooltipBox.width).toBe(anchorBox.x + anchorBox.width)
     await page.mouse.move(1000, 400)
     await tooltip.waitFor({ state: 'detached' })
+    if (kind === 'session') {
+      expect(await menuButton.evaluate(element => element === document.activeElement)).toBe(true)
+      expect(await tooltipAnchor.isVisible()).toBe(true)
+    }
+    await page.mouse.click(1000, 400)
     expect(await tooltipAnchor.isVisible()).toBe(false)
     expect(await page.getByRole('tooltip').count()).toBe(0)
     expect(tripwire.pageErrors).toEqual([])
diff --git a/apps/web/tests/sidebar-drawer.e2e.ts b/apps/web/tests/sidebar-drawer.e2e.ts
new file mode 100644
index 0000000000..99b5c3fd43
--- /dev/null
+++ b/apps/web/tests/sidebar-drawer.e2e.ts
@@ -0,0 +1,737 @@
+/** Narrow sidebar geometry, navigation, focus and retained content in the shipped profile. */
+import { readFile } from 'node:fs/promises'
+import { fileURLToPath } from 'node:url'
+import type { Locator } from 'playwright'
+import { chromium } from 'playwright'
+import { expect, it } from 'vitest'
+import { compareOrRefreshGolden, launchWebScaffold, seedSession, watchConsole, webSnapshotMode } from './scaffold.ts'
+
+/** A returning rail uses its compact layout without wide-content or icon-entry animations. */
+async function assertCompactRail(sidebar: Locator): Promise<void> {
+  expect(await sidebar.getByRole('button', { name: 'New session', exact: true }).count()).toBe(1)
+  expect(await sidebar.evaluate((el) => {
+    const root = el.firstElementChild!
+    return {
+      fits: root.getBoundingClientRect().width <= el.parentElement!.getBoundingClientRect().width,
+      animations: root.getAnimations({ subtree: true })
+        .filter((animation): animation is CSSAnimation =>
+          animation instanceof CSSAnimation && /wide-in|rail-in|rail-fade-in/.test(animation.animationName))
+        .map(animation => animation.animationName),
+    }
+  })).toEqual({ fits: true, animations: [] })
+}
+
+it.each(['light', 'dark'] as const)('keeps the macOS drawer opaque and excludes inert content from window drag regions in %s mode', async (colorScheme) => {
+  const scaffold = await launchWebScaffold({
+    extraOverlayPath: fileURLToPath(new URL('./pin-browse-picker.overlay.yml', import.meta.url)),
+  })
+  try {
+    const browser = await chromium.launch()
+    try {
+      const page = await browser.newPage({ viewport: { width: 520, height: 680 }, colorScheme, locale: 'en-US' })
+      await page.goto(scaffold.authenticatedUrl)
+      const opener = page.getByRole('button', { name: 'Open sidebar', exact: true })
+      await opener.waitFor()
+      await page.evaluate(() => { document.documentElement.dataset.platform = 'darwin' })
+      await opener.click()
+      const drawer = page.getByRole('dialog', { name: 'Navigation', exact: true })
+      await drawer.waitFor()
+      const column = page.locator('[data-slot="sidebar"]').locator('..')
+      const background = await column.evaluate((el) => {
+        const style = getComputedStyle(el)
+        return { color: style.backgroundColor, image: style.backgroundImage }
+      })
+      expect(background.image).toBe('none')
+      expect(background.color).toMatch(/^rgb\(/)
+      expect(await drawer.getByRole('button', { name: 'New session', exact: true }).last().evaluate((el) => {
+        const actual = getComputedStyle(el).backgroundColor
+        const root = document.documentElement
+        const platform = root.dataset.platform
+        delete root.dataset.platform
+        try {
+          return actual === getComputedStyle(el).backgroundColor
+        } finally {
+          root.dataset.platform = platform
+        }
+      })).toBe(true)
+      const inactiveContent = page.locator('[inert], [inert] *')
+      expect(await inactiveContent.count()).toBeGreaterThan(0)
+      expect(await inactiveContent.evaluateAll(elements => elements
+        .filter(el => getComputedStyle(el).getPropertyValue('app-region') !== 'none')
+        .map(el => `${el.tagName}.${el.getAttribute('class')}: ${getComputedStyle(el).getPropertyValue('app-region')}`)))
+        .toEqual([])
+      expect(await drawer.locator('[data-window-drag]').first().evaluate(el => getComputedStyle(el).getPropertyValue('app-region')))
+        .toBe('drag')
+      const collapse = drawer.getByRole('button', { name: 'Collapse sidebar', exact: true })
+      await collapse.click()
+      await drawer.waitFor({ state: 'hidden' })
+      await page.setViewportSize({ width: 1200, height: 800 })
+      const sidebar = page.locator('[data-slot="sidebar"]').locator('..')
+      await expect.poll(() => sidebar.evaluate(el => getComputedStyle(el).backgroundImage)).not.toBe('none')
+      const activeDragRows = page.locator('[data-window-drag]:not([inert] [data-window-drag])')
+      expect(await activeDragRows.count()).toBeGreaterThan(0)
+      expect(await activeDragRows.evaluateAll(rows => rows.every(row => getComputedStyle(row).getPropertyValue('app-region') === 'drag')))
+        .toBe(true)
+    } finally {
+      await browser.close()
+    }
+  } finally {
+    await scaffold.close()
+  }
+})
+
+it('hides a collapsed rail immediately when it becomes a drawer', async () => {
+  const scaffold = await launchWebScaffold({
+    extraOverlayPath: fileURLToPath(new URL('./pin-browse-picker.overlay.yml', import.meta.url)),
+  })
+  try {
+    const browser = await chromium.launch()
+    try {
+      const page = await browser.newPage({ viewport: { width: 768, height: 844 }, locale: 'en-US' })
+      await page.goto(scaffold.authenticatedUrl)
+      await page.getByRole('button', { name: 'Open sidebar', exact: true }).waitFor()
+      const sidebar = page.locator('[data-slot="sidebar"]')
+      const sidebarColumn = sidebar.locator('..')
+      await expect.poll(async () => (await sidebarColumn.boundingBox())?.width).toBe(56)
+      await sidebarColumn.evaluate((el) => {
+        el.parentElement!.style.setProperty('--ds-transition-duration-slow', '100s')
+      })
+      await page.setViewportSize({ width: 767, height: 844 })
+      await page.locator('[data-sidebar-drawer]').waitFor()
+      const state = await sidebarColumn.evaluate(el => ({
+        visibility: getComputedStyle(el).visibility,
+        transitions: el.getAnimations().filter(animation => animation instanceof CSSTransition)
+          .map(animation => animation.transitionProperty),
+      }))
+      expect(state).toEqual({ visibility: 'hidden', transitions: [] })
+      await page.setViewportSize({ width: 768, height: 844 })
+      await page.locator('[data-sidebar-drawer]').waitFor({ state: 'detached' })
+      await assertCompactRail(sidebar)
+      await page.setViewportSize({ width: 767, height: 844 })
+      await page.locator('[data-sidebar-drawer]').waitFor()
+      await page.getByRole('button', { name: 'Open sidebar', exact: true }).click()
+      const drawer = page.getByRole('dialog', { name: 'Navigation', exact: true })
+      await drawer.waitFor()
+      expect(await sidebarColumn.evaluate(el => el.getAnimations().some(animation =>
+        animation instanceof CSSTransition && animation.transitionProperty === 'transform'))).toBe(true)
+      await sidebarColumn.evaluate((el) => {
+        for (const animation of el.parentElement!.getAnimations({ subtree: true })) animation.finish()
+      })
+      await drawer.getByRole('button', { name: 'Collapse sidebar', exact: true }).click()
+      expect(await sidebarColumn.evaluate(el => el.getAnimations().some(animation =>
+        animation instanceof CSSTransition && animation.transitionProperty === 'transform'))).toBe(true)
+      await sidebarColumn.evaluate((el) => {
+        for (const animation of el.parentElement!.getAnimations({ subtree: true })) animation.finish()
+      })
+      await page.setViewportSize({ width: 768, height: 844 })
+      await page.locator('[data-sidebar-drawer]').waitFor({ state: 'detached' })
+      await assertCompactRail(sidebar)
+    } finally {
+      await browser.close()
+    }
+  } finally {
+    await scaffold.close()
+  }
+})
+
+it('retains the closing slide when an expanded sidebar becomes a collapsed drawer', async () => {
+  const scaffold = await launchWebScaffold({
+    extraOverlayPath: fileURLToPath(new URL('./pin-browse-picker.overlay.yml', import.meta.url)),
+  })
+  try {
+    const browser = await chromium.launch()
+    try {
+      const page = await browser.newPage({ viewport: { width: 1024, height: 844 }, locale: 'en-US' })
+      await page.goto(scaffold.authenticatedUrl)
+      await page.getByRole('button', { name: 'Collapse sidebar', exact: true }).waitFor()
+      const sidebarColumn = page.locator('[data-slot="sidebar"]').locator('..')
+      await expect.poll(async () => (await sidebarColumn.boundingBox())?.width).toBe(280)
+      await sidebarColumn.evaluate((el) => {
+        el.parentElement!.style.setProperty('--ds-transition-duration-slow', '100s')
+      })
+      await page.setViewportSize({ width: 767, height: 844 })
+      await page.locator('[data-sidebar-drawer][data-sidebar-collapsed]').waitFor()
+      expect(await sidebarColumn.evaluate(el => el.getAnimations().some(animation =>
+        animation instanceof CSSTransition && animation.transitionProperty === 'transform'))).toBe(true)
+    } finally {
+      await browser.close()
+    }
+  } finally {
+    await scaffold.close()
+  }
+})
+
+/** Sample the CSS fade at its midpoint without depending on the host's frame rate. */
+async function assertMaskFade(frame: Locator, from: number, to: number): Promise<void> {
+  const sample = await frame.locator('[data-sidebar-mask]').evaluate((el) => {
+    const fade = el.getAnimations().find(animation => animation instanceof CSSTransition && animation.transitionProperty === 'opacity')
+    if (fade === undefined || !(fade.effect instanceof KeyframeEffect)) throw new Error('Drawer mask opacity transition is missing')
+    fade.pause()
+    fade.currentTime = Number(fade.effect.getComputedTiming().duration) / 2
+    return {
+      endpoints: fade.effect.getKeyframes().map(keyframe => Number(keyframe.opacity)),
+      opacity: Number(getComputedStyle(el).opacity),
+    }
+  })
+  expect(sample.endpoints).toEqual([from, to])
+  expect(sample.opacity).toBeGreaterThan(0)
+  expect(sample.opacity).toBeLessThan(1)
+  await frame.evaluate((el) => {
+    for (const animation of el.getAnimations({ subtree: true })) {
+      if (animation instanceof CSSTransition) animation.finish()
+    }
+    el.style.removeProperty('--ds-transition-duration-slow')
+  })
+}
+
+/** Sample both width transitions on the same clock to detect detached sidebar controls. */
+async function assertFoldResize(toggle: Locator, from: number, to: number): Promise<void> {
+  await expect.poll(() => toggle.evaluate((button, target) => {
+    const frame = button.closest<HTMLElement>('[data-animating]')
+    return frame !== null && parseFloat(frame.style.gridTemplateColumns) === target && frame.getAnimations().some(animation =>
+      animation instanceof CSSTransition && animation.transitionProperty === 'grid-template-columns')
+  }, to)).toBe(true)
+  const sample = await toggle.evaluate((button) => {
+    const frame = button.closest<HTMLElement>('[data-animating]')!
+    const transitions = frame.getAnimations({ subtree: true }).filter((animation): animation is CSSTransition =>
+      animation instanceof CSSTransition && ['grid-template-columns', 'width'].includes(animation.transitionProperty))
+    const grid = transitions.find(animation => animation.transitionProperty === 'grid-template-columns')
+    if (grid === undefined) throw new Error('Fold width transition is missing')
+    const at = (progress: number) => {
+      for (const transition of transitions) {
+        transition.pause()
+        transition.currentTime = Number(transition.effect!.getComputedTiming().duration) * progress
+      }
+      const width = parseFloat(getComputedStyle(frame).gridTemplateColumns)
+      return { width, gap: frame.getBoundingClientRect().left + width - button.getBoundingClientRect().right }
+    }
+    const start = at(0)
+    const middle = at(0.5)
+    const end = at(1)
+    for (const transition of transitions) transition.finish()
+    frame.style.removeProperty('--ds-transition-duration-slow')
+    return { endpoints: [start.width, end.width], start, middle }
+  })
+  expect(sample.endpoints).toEqual([from, to])
+  expect(sample.middle.width).toBeGreaterThan(Math.min(from, to))
+  expect(sample.middle.width).toBeLessThan(Math.max(from, to))
+  expect(sample.middle.gap).toBeCloseTo(sample.start.gap, 1)
+}
+
+it('overlays the conversation and closes after navigation without losing its sidebar content', async () => {
+  const scaffold = await launchWebScaffold({
+    extraOverlayPath: fileURLToPath(new URL('./pin-browse-picker.overlay.yml', import.meta.url)),
+  })
+  try {
+    const workspace = await scaffold.ctx.workspaceRegistry.create(scaffold.workspaceCwd)
+    const seed = await readFile(new URL('../../../snapshots/web/seeded-history/session.v3.jsonl', import.meta.url), 'utf8')
+    const sessionId = await seedSession(scaffold, seed, 'session-c4421b66-252e-44c0-80ed-6e320abeba25')
+    await workspace.attachSession(sessionId)
+    await scaffold.ctx.sessionController.rename({ sessionId, title: 'Drawer navigation' })
+    const browser = await chromium.launch()
+    try {
+      const page = await browser.newPage({ viewport: { width: 390, height: 844 }, hasTouch: true, locale: 'en-US' })
+      const console = watchConsole(page)
+      await page.goto(scaffold.authenticatedUrl)
+      const opener = page.getByRole('button', { name: 'Open sidebar', exact: true })
+      await opener.waitFor()
+      const frame = page.locator('[data-sidebar-drawer]')
+      expect(await page.locator('[data-shell-leading]').getByRole('button').count()).toBe(1)
+      expect(await frame.evaluate(el => getComputedStyle(el).getPropertyValue('--dsh-frame-leading-clearance').trim()))
+        .toBe('48px')
+      await expect.poll(() => frame.getAttribute('data-sidebar-collapsed')).toBe('true')
+      const sidebar = page.locator('[data-slot="sidebar"]')
+      const original = await sidebar.elementHandle()
+      const main = page.locator('[data-slot="main"]').locator('..')
+      const closed = await main.boundingBox()
+      // A long test-owned duration keeps the transition available until its
+      // animation clock is sampled and finished explicitly.
+      await frame.evaluate((el) => { el.style.setProperty('--ds-transition-duration-slow', '100s') })
+      await opener.tap()
+      const drawer = page.getByRole('dialog', { name: 'Navigation', exact: true })
+      await drawer.waitFor()
+      await assertMaskFade(frame, 0, 1)
+      await expect.poll(() => main.boundingBox()).toEqual(closed)
+      expect(closed?.width).toBe(390)
+      expect(await main.evaluate(el => el.closest('[inert]') !== null)).toBe(true)
+      expect(await page.locator('[data-side="sidebar"]').count()).toBe(0)
+      const workspaceRow = drawer.locator('[data-row-key^="workspace:"]').first()
+      const workspaceButtons = workspaceRow.getByRole('button', { includeHidden: true })
+      expect(await workspaceRow.getAttribute('aria-expanded')).toBe('true')
+      expect(await workspaceButtons.count()).toBe(2)
+      for (const button of await workspaceButtons.all()) await button.waitFor()
+      await workspaceRow.tap()
+      expect(await workspaceRow.getAttribute('aria-expanded')).toBe('false')
+      for (const button of await workspaceButtons.all()) expect(await button.isVisible()).toBe(false)
+      await workspaceRow.tap()
+      for (const button of await workspaceButtons.all()) await button.waitFor()
+      await drawer.getByRole('button', { name: 'Search sessions', exact: true }).tap()
+      const search = drawer.getByPlaceholder('Search session names')
+      expect(await search.evaluate(el => getComputedStyle(el).fontSize)).toBe('16px')
+      await drawer.getByRole('button', { name: 'Clear search', exact: true }).tap()
+      await frame.evaluate((el) => { el.style.setProperty('--ds-transition-duration-slow', '100s') })
+      await page.getByRole('treeitem').filter({ has: page.getByText('Drawer navigation', { exact: true }) }).tap()
+      await assertMaskFade(frame, 1, 0)
+      await drawer.waitFor({ state: 'hidden' })
+      await page.getByRole('navigation', { name: 'Session hierarchy' }).getByText('Drawer navigation', { exact: true }).waitFor()
+      const chatTab = page.getByRole('tab', { name: 'Chat', exact: true })
+      const tabInset = () => chatTab.evaluate((tab) => {
+        const label = document.createRange()
+        label.selectNodeContents(tab)
+        return label.getBoundingClientRect().left - tab.closest('header')!.getBoundingClientRect().left
+      })
+      expect(await tabInset()).toBeCloseTo(20, 1)
+      // Restore CSS-probe markers in the same synchronous task, before rendering.
+      const desktopInsets = await chatTab.evaluate((tab) => {
+        const root = document.documentElement
+        try {
+          return ['darwin', 'win32'].map((platform) => {
+            root.dataset.platform = platform
+            const label = document.createRange()
+            label.selectNodeContents(tab)
+            return label.getBoundingClientRect().left - tab.closest('header')!.getBoundingClientRect().left
+          })
+        } finally {
+          delete root.dataset.platform
+        }
+      })
+      for (const inset of desktopInsets) expect(inset).toBeCloseTo(28, 1)
+      await page.setViewportSize({ width: 768, height: 844 })
+      await frame.waitFor({ state: 'detached' })
+      expect(await tabInset()).toBeCloseTo(28, 1)
+      await page.setViewportSize({ width: 390, height: 844 })
+      await frame.waitFor()
+      await opener.click()
+      const selectedRow = drawer.getByRole('treeitem', { selected: true })
+      const more = selectedRow.getByRole('button', { name: 'Session actions for Drawer navigation', exact: true })
+      await more.waitFor()
+      expect(await selectedRow.getByRole('button', { name: 'Archive session', exact: true }).isVisible()).toBe(false)
+      expect(await selectedRow.getByRole('button', { name: 'Pin session', exact: true }).isVisible()).toBe(false)
+      expect(await selectedRow.getByRole('button').count()).toBe(1)
+      await more.tap()
+      const menu = page.getByRole('menu')
+      await menu.getByRole('menuitem', { name: 'Archive session', exact: true }).waitFor()
+      await menu.getByRole('menuitem', { name: 'Pin session', exact: true }).tap()
+      await menu.waitFor({ state: 'hidden' })
+      const unpin = selectedRow.getByRole('button', { name: 'Unpin session', exact: true })
+      await expect.poll(() => selectedRow.getByLabel('Pinned', { exact: true }).count()).toBe(1)
+      expect(await unpin.isVisible()).toBe(true)
+      const timestamp = selectedRow.getByText(/^(?:now|\d+min)$/, { exact: true })
+      expect(await timestamp.count()).toBe(1)
+      expect(await timestamp.textContent()).toMatch(/^(?:now|\d+min)$/)
+      expect(await timestamp.isVisible()).toBe(false)
+      const unpinBox = (await unpin.boundingBox())!
+      const moreBox = (await more.boundingBox())!
+      const folderMoreBox = (await workspaceButtons.nth(0).boundingBox())!
+      const folderNewBox = (await workspaceButtons.nth(1).boundingBox())!
+      expect(moreBox.x - unpinBox.x).toBeCloseTo(folderNewBox.x - folderMoreBox.x, 1)
+      await unpin.tap()
+      await expect.poll(() => selectedRow.getByLabel('Pinned', { exact: true }).count()).toBe(0)
+      expect(await drawer.isVisible()).toBe(true)
+      await more.tap()
+      await menu.getByRole('menuitem', { name: 'Pin session', exact: true }).tap()
+      await menu.waitFor({ state: 'hidden' })
+      await unpin.waitFor()
+      await more.tap()
+      await menu.getByRole('menuitem', { name: 'Unpin session', exact: true }).tap()
+      await menu.waitFor({ state: 'hidden' })
+      await expect.poll(() => selectedRow.getByLabel('Pinned', { exact: true }).count()).toBe(0)
+      await drawer.getByRole('button', { name: 'Plugins', exact: true }).tap()
+      await drawer.waitFor({ state: 'hidden' })
+      const pluginPanel = page.locator('[data-plugin-panel]')
+      await pluginPanel.waitFor()
+      for (const width of [390, 767, 768]) {
+        await page.setViewportSize({ width, height: 844 })
+        expect(await pluginPanel.evaluate(el => Number.parseFloat(getComputedStyle(el).paddingLeft)))
+          .toBeCloseTo(width < 768 ? 20 : width * 0.04, 1)
+      }
+      await page.setViewportSize({ width: 390, height: 844 })
+      await frame.waitFor()
+      await opener.click()
+      await drawer.getByRole('button', { name: 'Automation tasks', exact: true }).tap()
+      await drawer.waitFor({ state: 'hidden' })
+      const tasksContent = page.getByTestId('task-manager-page').locator('[class*="pageContent"]')
+      await tasksContent.waitFor()
+      for (const width of [390, 767, 768]) {
+        await page.setViewportSize({ width, height: 844 })
+        expect(await tasksContent.evaluate(el => Number.parseFloat(getComputedStyle(el).paddingLeft)))
+          .toBeCloseTo(width < 768 ? 20 : width * 0.04, 1)
+      }
+      await page.setViewportSize({ width: 390, height: 844 })
+      await frame.waitFor()
+      await opener.click()
+      await drawer.waitFor()
+      await page.touchscreen.tap(370, 420)
+      await drawer.waitFor({ state: 'hidden' })
+      await opener.click()
+      await page.keyboard.press('Escape')
+      await drawer.waitFor({ state: 'hidden' })
+      expect(await opener.evaluate(el => el === document.activeElement)).toBe(true)
+      expect(await sidebar.evaluate((el, previous) => el === previous, original)).toBe(true)
+      await original?.dispose()
+
+      await page.setViewportSize({ width: 768, height: 844 })
+      await expect.poll(() => frame.count()).toBe(0)
+      await expect.poll(async () => Math.round((await main.boundingBox())!.width)).toBe(712)
+      await page.setViewportSize({ width: 767, height: 844 })
+      await expect.poll(() => frame.count()).toBe(1)
+
+      await page.emulateMedia({ reducedMotion: 'reduce' })
+      await opener.tap()
+      const mask = frame.locator('[data-sidebar-mask]')
+      expect(await mask.evaluate(el => getComputedStyle(el).opacity)).toBe('1')
+      expect(await mask.evaluate(el => el.getAnimations().length)).toBe(0)
+      await drawer.getByRole('button', { name: 'Collapse sidebar', exact: true }).tap()
+      expect(await mask.evaluate(el => getComputedStyle(el).opacity)).toBe('0')
+      await page.emulateMedia({ reducedMotion: 'no-preference' })
+      await expect.poll(async () => Math.round((await main.boundingBox())!.width)).toBe(767)
+      expect(await page.evaluate(() => document.documentElement.scrollWidth)).toBe(767)
+      await page.evaluate(() => { document.documentElement.dataset.platform = 'darwin' })
+      await expect.poll(() => main.evaluate(el => getComputedStyle(el).paddingTop)).toBe('0px')
+      await page.evaluate(() => { delete document.documentElement.dataset.platform })
+      await expect.poll(() => main.evaluate(el => getComputedStyle(el).paddingTop)).toBe('48px')
+
+      await page.setViewportSize({ width: 390, height: 844 })
+      await drawer.waitFor({ state: 'hidden' })
+      await opener.tap()
+      await drawer.getByRole('button', { name: 'New session', exact: true }).last().tap()
+      await drawer.waitFor({ state: 'hidden' })
+      const home = page.locator('[data-phase="hero"]')
+      await home.waitFor()
+      const editor = home.locator('[contenteditable="true"]')
+      await editor.tap()
+      const homeEditorBox = await editor.boundingBox()
+      // Chromium cannot raise a phone keyboard; simulate document panning
+      // before the visual viewport publishes the matching offset.
+      const restoreViewport = await page.evaluateHandle(() => {
+        const viewport = window.visualViewport!
+        const scrollY = Object.getOwnPropertyDescriptor(window, 'scrollY')!
+        Object.defineProperty(window, 'scrollY', { configurable: true, value: 80 })
+        Object.defineProperties(viewport, {
+          height: { configurable: true, value: 360 },
+          offsetTop: { configurable: true, value: 0 },
+        })
+        viewport.dispatchEvent(new Event('resize'))
+        viewport.dispatchEvent(new Event('scroll'))
+        window.dispatchEvent(new Event('scroll'))
+        return () => {
+          Object.defineProperty(window, 'scrollY', scrollY)
+          Reflect.deleteProperty(viewport, 'height')
+          Reflect.deleteProperty(viewport, 'offsetTop')
+          window.dispatchEvent(new Event('scroll'))
+          viewport.dispatchEvent(new Event('resize'))
+        }
+      })
+      const root = page.locator('#root')
+      await expect.poll(() => root.boundingBox()).toEqual({ x: 0, y: 0, width: 390, height: 844 })
+      expect(await editor.boundingBox()).toEqual(homeEditorBox)
+      await page.evaluate(() => {
+        Object.defineProperty(window.visualViewport!, 'offsetTop', { configurable: true, value: 80 })
+        window.visualViewport!.dispatchEvent(new Event('scroll'))
+      })
+      await expect.poll(() => root.boundingBox()).toEqual({ x: 0, y: 0, width: 390, height: 844 })
+      await expect.poll(async () => (await main.boundingBox())?.height).toBe(844)
+      await opener.tap()
+      await expect.poll(async () => (await drawer.boundingBox())?.height).toBe(844)
+      const searchWithKeyboard = drawer.getByPlaceholder('Search session names')
+      await drawer.getByRole('button', { name: 'Search sessions', exact: true }).tap()
+      await searchWithKeyboard.tap()
+      await searchWithKeyboard.fill('retained search')
+      await drawer.getByRole('button', { name: 'Account menu', exact: true }).tap()
+      await page.getByRole('menuitem', { name: 'Settings', exact: true }).tap()
+      const settings = page.getByRole('dialog', { name: 'Settings', exact: true })
+      await settings.waitFor()
+      const settingsBox = (await settings.boundingBox())!
+      expect(settingsBox.x).toBeGreaterThanOrEqual(0)
+      expect(settingsBox.y).toBeGreaterThanOrEqual(0)
+      expect(settingsBox.x + settingsBox.width).toBeLessThanOrEqual(390)
+      expect(settingsBox.y + settingsBox.height).toBeLessThanOrEqual(844)
+      const closeSettings = settings.getByRole('button', { name: 'Close', exact: true })
+      const closeBox = (await closeSettings.boundingBox())!
+      expect(closeBox.y).toBeGreaterThanOrEqual(0)
+      expect(closeBox.y + closeBox.height).toBeLessThanOrEqual(844)
+      await closeSettings.tap()
+      await settings.waitFor({ state: 'hidden' })
+      await expect.poll(() => searchWithKeyboard.inputValue()).toBe('retained search')
+      await restoreViewport.evaluate((restore) => { restore() })
+      await restoreViewport.dispose()
+      await expect.poll(() => root.boundingBox()).toEqual({ x: 0, y: 0, width: 390, height: 844 })
+      await expect.poll(async () => (await drawer.boundingBox())?.height).toBe(844)
+      await frame.evaluate((el) => { el.scrollLeft = 10 })
+      expect(await frame.evaluate(el => el.scrollLeft)).toBe(0)
+      await expect.poll(() => mask.boundingBox()).toEqual({ x: 0, y: 0, width: 390, height: 844 })
+      await expect.poll(() => drawer.evaluate((el) => {
+        const frame = el.closest('[data-sidebar-drawer]')!
+        let column = el
+        while (column.parentElement !== frame) column = column.parentElement!
+        const { y, height } = column.getBoundingClientRect()
+        return { y, height }
+      })).toEqual({ y: 0, height: 844 })
+      await expect.poll(async () => (await drawer.boundingBox())?.height).toBe(844)
+      await page.setViewportSize({ width: 844, height: 390 })
+      await expect.poll(async () => (await root.boundingBox())?.height).toBe(390)
+      await expect.poll(() => frame.count()).toBe(0)
+      await page.setViewportSize({ width: 390, height: 844 })
+      await expect.poll(async () => (await root.boundingBox())?.height).toBe(844)
+      await expect.poll(() => frame.count()).toBe(1)
+
+      const posture = await page.context().newCDPSession(page)
+      try {
+        await page.setViewportSize({ width: 951, height: 669 })
+        await expect.poll(() => frame.count()).toBe(0)
+        await posture.send('Emulation.setDevicePostureOverride', { posture: { type: 'folded' } })
+        await opener.tap()
+        await expect.poll(() => main.boundingBox()).toEqual({ x: 475.5, y: 0, width: 475.5, height: 669 })
+        expect(await page.locator('[data-side="sidebar"]').count()).toBe(0)
+        const foldSearch = page.getByPlaceholder('Search session names')
+        if (!(await foldSearch.isVisible())) await page.getByRole('button', { name: 'Search sessions', exact: true }).tap()
+        await foldSearch.fill('fold search')
+        const wideFrame = page.locator('[data-rightbar-collapsed]')
+        const collapseSidebar = page.getByRole('button', { name: 'Collapse sidebar', exact: true })
+        await wideFrame.evaluate((el) => { el.style.setProperty('--ds-transition-duration-slow', '100s') })
+        await posture.send('Emulation.clearDevicePostureOverride')
+        await assertFoldResize(collapseSidebar, 475.5, 280)
+        await expect.poll(() => main.boundingBox()).toEqual({ x: 280, y: 0, width: 671, height: 669 })
+        expect(await page.locator('[data-side="sidebar"]').count()).toBe(1)
+        expect(await foldSearch.evaluate(el => el === document.activeElement)).toBe(true)
+        expect(await foldSearch.inputValue()).toBe('fold search')
+        await wideFrame.evaluate((el) => { el.style.setProperty('--ds-transition-duration-slow', '100s') })
+        await posture.send('Emulation.setDevicePostureOverride', { posture: { type: 'folded' } })
+        await assertFoldResize(collapseSidebar, 280, 475.5)
+        await expect.poll(async () => (await main.boundingBox())?.x).toBe(475.5)
+        expect(await foldSearch.evaluate(el => el === document.activeElement)).toBe(true)
+        await page.emulateMedia({ reducedMotion: 'reduce' })
+        await posture.send('Emulation.clearDevicePostureOverride')
+        await expect.poll(async () => (await main.boundingBox())?.x).toBe(280)
+        // Scroll-driven text fades remain registered even with reduced motion.
+        expect(await wideFrame.evaluate(el => el.getAnimations({ subtree: true })
+          .filter(animation => animation.timeline === document.timeline).length)).toBe(0)
+        await posture.send('Emulation.setDevicePostureOverride', { posture: { type: 'folded' } })
+        await expect.poll(async () => (await main.boundingBox())?.x).toBe(475.5)
+        await page.emulateMedia({ reducedMotion: 'no-preference' })
+        await page.setViewportSize({ width: 669, height: 951 })
+        await expect.poll(() => frame.getAttribute('data-sidebar-collapsed')).toBe('true')
+        await drawer.waitFor({ state: 'hidden' })
+        await opener.tap()
+        await expect.poll(async () => (await drawer.boundingBox())?.width).toBe(280)
+        expect(await main.boundingBox()).toEqual({ x: 0, y: 0, width: 669, height: 951 })
+      } finally {
+        await posture.detach()
+      }
+
+      const pointerPage = await browser.newPage({ viewport: { width: 390, height: 844 }, locale: 'en-US' })
+      try {
+        await pointerPage.goto(scaffold.authenticatedUrl)
+        await pointerPage.getByRole('button', { name: 'Open sidebar', exact: true }).click()
+        expect(await pointerPage.getByPlaceholder('Search session names').evaluate(el => getComputedStyle(el).fontSize)).toBe('13px')
+        const pointerWorkspace = pointerPage.locator('[data-row-key^="workspace:"]').first()
+        const pointerWorkspaceButtons = pointerWorkspace.getByRole('button', { includeHidden: true })
+        await pointerWorkspace.click()
+        expect(await pointerWorkspace.getAttribute('aria-expanded')).toBe('false')
+        const collapseSidebar = pointerPage.getByRole('button', { name: 'Collapse sidebar', exact: true })
+        await collapseSidebar.focus()
+        await collapseSidebar.hover()
+        for (const button of await pointerWorkspaceButtons.all()) expect(await button.isVisible()).toBe(false)
+        await pointerWorkspace.hover()
+        for (const button of await pointerWorkspaceButtons.all()) await button.waitFor()
+        await pointerWorkspace.click()
+        for (const label of ['Collapse sidebar', 'View options']) {
+          await pointerPage.getByRole('button', { name: label, exact: true }).hover()
+          const tooltip = pointerPage.getByRole('tooltip').filter({ hasText: label })
+          await tooltip.waitFor()
+          expect(await tooltip.evaluate(el => el.closest('[data-slot="sidebar"]'))).toBeNull()
+          const box = (await tooltip.boundingBox())!
+          expect(box.x).toBeGreaterThanOrEqual(12)
+          expect(box.x + box.width).toBeLessThanOrEqual(378)
+        }
+        const pointerRow = pointerPage.getByRole('treeitem').filter({ has: pointerPage.getByText('Drawer navigation', { exact: true }) })
+        await pointerRow.click()
+        await pointerPage.getByRole('dialog', { name: 'Navigation', exact: true }).waitFor({ state: 'hidden' })
+        await pointerPage.getByRole('button', { name: 'Open sidebar', exact: true }).click()
+        await pointerPage.getByRole('button', { name: 'Collapse sidebar', exact: true }).hover()
+        await expect.poll(() => pointerRow.getByRole('button', { name: 'Session actions for Drawer navigation', exact: true }).isVisible()).toBe(false)
+        await pointerRow.hover()
+        for (const label of ['Session actions for Drawer navigation', 'Archive session', 'Pin session']) {
+          await pointerRow.getByRole('button', { name: label, exact: true }).waitFor()
+        }
+        await pointerPage.getByRole('button', { name: 'Collapse sidebar', exact: true }).click()
+        const pointerDrawer = pointerPage.getByRole('dialog', { name: 'Navigation', exact: true })
+        await pointerDrawer.waitFor({ state: 'hidden' })
+        await pointerPage.setViewportSize({ width: 767, height: 844 })
+        await pointerPage.getByRole('button', { name: 'Open sidebar', exact: true }).press('Enter')
+        await pointerDrawer.waitFor()
+        expect(await pointerDrawer.evaluate(el => el.contains(document.activeElement))).toBe(true)
+        await pointerPage.getByRole('button', { name: 'Search sessions', exact: true }).click()
+        await expect.poll(() => pointerPage.getByPlaceholder('Search session names')
+          .evaluate(el => el === document.activeElement)).toBe(true)
+        await pointerPage.setViewportSize({ width: 768, height: 844 })
+        await pointerPage.locator('[data-sidebar-drawer]').waitFor({ state: 'detached' })
+        const pointerSidebar = pointerPage.locator('[data-slot="sidebar"]')
+        await expect.poll(() => pointerSidebar.getByRole('button', { name: 'New session', exact: true }).count()).toBe(1)
+        const railToggle = pointerSidebar.getByRole('button', { name: 'Open sidebar', exact: true })
+        expect(await railToggle.evaluate(el => el === document.activeElement)).toBe(true)
+      } finally {
+        await pointerPage.close()
+      }
+      expect(console.pageErrors).toEqual([])
+      expect(console.warnings).toEqual([])
+      const result = [
+        '390px: closed sidebar has no rail; main width 390px',
+        'open: main geometry retained; background inert; no resize handle',
+        'close: Session navigation, Plugins navigation, mask and Escape',
+        'retained: sidebar DOM and opener focus',
+        '768px: 56px rail; main width 712px; drawer focus transfers to the rail toggle',
+        'breakpoint motion: collapsed rail hides immediately and returns compact without crossfades; expanded sidebar and explicit toggles retain their slides',
+        '767px: hidden drawer; main width 767px; no page overflow',
+        'global panels: browser top inset 48px; macOS keeps its existing clearance',
+        'tooltips: sidebar and workspace controls escape the drawer and fit the viewport',
+        'search input: 16px on touch; 13px with a fine pointer',
+        'simulated keyboard: homepage and drawer retain 844px layout height without following the 360px visual viewport; Settings stays within the viewport',
+        'keyboard close: layout height stays 844px; sidebar search retained; Settings close remains reachable',
+        'shell coverage: drawer backing and mask cover 844px without synthetic safe-area insets',
+        'rotation: 844x390 then 390x844 restores shell height and sidebar breakpoint',
+        'folded landscape: 951px frame splits at 475.5px without a resize handle; unfolding restores 280px and search focus; portrait retains the drawer',
+        'fold transitions: sidebar controls follow the divider in both directions; reduced motion changes width without animation',
+        'drawer mask: opacity transitions from 0 to 1 on open and 1 to 0 on close',
+        'reduced motion: drawer and mask settle without transitions',
+        'Web header: only the sidebar opener remains, with 48px leading clearance',
+        'below 768px: plugin and automation pages use 20px insets; Web view tabs align at 20px, while Desktop and wider Web tabs retain 28px',
+        'touch selected Session: More remains visible; update time is hidden; pinned rows offer Unpin before More with Workspace action spacing',
+        'touch Workspace: actions appear only while expanded, including after folding the focused row',
+        'fine pointer: folded Workspace actions remain available on hover',
+        'fine pointer: selected Session actions stay hidden until hover, including at 390px',
+      ].join('\n')
+      await compareOrRefreshGolden(fileURLToPath(new URL('./expected/sidebar-drawer.expected.md', import.meta.url)), result, webSnapshotMode())
+    } finally {
+      await browser.close()
+    }
+  } finally {
+    await scaffold.close()
+  }
+})
+
+it('dismisses retained sidebar menus at the drawer breakpoint and preserves their rows', async () => {
+  const scaffold = await launchWebScaffold({
+    extraOverlayPath: fileURLToPath(new URL('./pin-browse-picker.overlay.yml', import.meta.url)),
+  })
+  try {
+    const workspace = await scaffold.ctx.workspaceRegistry.create(scaffold.workspaceCwd)
+    const seed = await readFile(new URL('../../../snapshots/web/seeded-history/session.v3.jsonl', import.meta.url), 'utf8')
+    const sessionId = await seedSession(scaffold, seed, 'session-c4421b66-252e-44c0-80ed-6e320abeba25')
+    await workspace.attachSession(sessionId)
+    await scaffold.ctx.sessionController.rename({ sessionId, title: 'Menu regression' })
+    const browser = await chromium.launch()
+    try {
+      const page = await browser.newPage({ viewport: { width: 1024, height: 844 }, locale: 'en-US' })
+      await page.goto(scaffold.authenticatedUrl)
+      const row = page.locator(`[data-row-key="session:${sessionId}"]`)
+      await row.waitFor()
+      const original = await row.elementHandle()
+      for (const label of ['View options', 'Session actions for Menu regression']) {
+        await page.setViewportSize({ width: 1024, height: 844 })
+        await page.getByRole('button', { name: 'Collapse sidebar', exact: true }).waitFor()
+        if (label.startsWith('Session')) await row.hover()
+        await page.getByRole('button', { name: label, exact: true }).click()
+        await page.getByRole('menu').waitFor()
+        await page.setViewportSize({ width: 767, height: 844 })
+        await page.getByRole('menu').waitFor({ state: 'hidden' })
+        const opener = page.getByRole('button', { name: 'Open sidebar', exact: true })
+        await expect.poll(() => opener.evaluate(element => element === document.activeElement)).toBe(true)
+        await opener.click()
+        await row.waitFor()
+        expect(await row.evaluate((element, before) => element === before, original)).toBe(true)
+      }
+      await original?.dispose()
+      await compareOrRefreshGolden(fileURLToPath(new URL('./expected/sidebar-menu-dismissal.expected.md', import.meta.url)), [
+        'View options and Session menus close when the sidebar becomes an inert drawer.',
+        'Focus returns to the visible sidebar opener; retained Session rows keep their DOM identity.',
+      ].join('\n'), webSnapshotMode())
+    } finally { await browser.close() }
+  } finally { await scaffold.close() }
+})
+
+it('keeps drawer shortcuts and hit targets above fullscreen and floating right panels', async () => {
+  const scaffold = await launchWebScaffold({
+    extraOverlayPath: fileURLToPath(new URL('./pin-browse-picker.overlay.yml', import.meta.url)),
+  })
+  try {
+    const workspace = await scaffold.ctx.workspaceRegistry.create(scaffold.workspaceCwd)
+    const seed = await readFile(new URL('../../../snapshots/web/seeded-history/session.v3.jsonl', import.meta.url), 'utf8')
+    const sessionId = await seedSession(scaffold, seed, 'session-c4421b66-252e-44c0-80ed-6e320abeba25')
+    await workspace.attachSession(sessionId)
+    await scaffold.ctx.sessionController.rename({ sessionId, title: 'Drawer overlay checks' })
+    const browser = await chromium.launch()
+    try {
+      const page = await browser.newPage({ viewport: { width: 1280, height: 844 }, locale: 'en-US' })
+      await page.addInitScript(() => { Object.defineProperty(navigator, 'platform', { value: 'MacIntel' }) })
+      await page.goto(scaffold.authenticatedUrl)
+      const row = page.getByRole('treeitem').filter({ has: page.getByText('Drawer overlay checks', { exact: true }) })
+      await row.click()
+      await page.locator('[data-sidebar-right-expand]').click()
+      await page.locator('[data-sidebar-right-guide-entry="files"]').click()
+      const panel = page.locator('[data-sidebar-right-open]')
+      const primary = await page.evaluate(() => /mac/i.test(navigator.platform) ? 'Meta' : 'Control')
+      const toggle = `${primary}+Alt+b`
+      await row.hover()
+      const card = page.getByRole('button', { name: 'Copy: Drawer overlay checks', exact: true })
+      await card.waitFor()
+      await page.setViewportSize({ width: 390, height: 844 })
+      await card.waitFor({ state: 'hidden' })
+      expect(await row.count()).toBe(1)
+      const drawer = page.getByRole('dialog', { name: 'Navigation', exact: true })
+      await expect.poll(() => panel.getAttribute('data-sidebar-right-panel')).toBe('fullscreen')
+      const assertAboveRightPanel = async (coveredPoint?: { x: number; y: number }) => {
+        await page.locator('[data-sidebar-drawer][data-sidebar-collapsed]').waitFor()
+        await page.keyboard.press(toggle)
+        await drawer.waitFor()
+        const collapse = drawer.getByRole('button', { name: 'Collapse sidebar', exact: true })
+        await expect.poll(() => collapse.evaluate(el => document.activeElement === el)).toBe(true)
+        await expect.poll(() => drawer.evaluate((el) => {
+          const box = el.getBoundingClientRect()
+          return el.contains(document.elementFromPoint(box.left + 140, 30))
+        })).toBe(true)
+        expect(await page.evaluate(() => document.elementFromPoint(380, 420)?.hasAttribute('data-sidebar-mask'))).toBe(true)
+        if (coveredPoint !== undefined) {
+          expect(await drawer.evaluate((el, point) => {
+            const hit = document.elementFromPoint(point.x, point.y)
+            return el.contains(hit) || hit?.hasAttribute('data-sidebar-mask')
+          }, coveredPoint)).toBe(true)
+        }
+        await page.keyboard.press(`${primary}+Alt+k`)
+        await expect.poll(() => drawer.getByPlaceholder('Search session names').evaluate(el => document.activeElement === el)).toBe(true)
+        await page.keyboard.press(toggle)
+        await drawer.waitFor({ state: 'hidden' })
+        expect(await panel.evaluate(el => el.closest('[inert]') === null)).toBe(true)
+      }
+      await page.keyboard.press(`${primary}+Alt+k`)
+      await drawer.waitFor()
+      await expect.poll(() => drawer.getByPlaceholder('Search session names')
+        .evaluate(el => el === document.activeElement)).toBe(true)
+      await page.keyboard.press(toggle)
+      await drawer.waitFor({ state: 'hidden' })
+      await assertAboveRightPanel()
+      await page.setViewportSize({ width: 1280, height: 844 })
+      await expect.poll(() => panel.getAttribute('data-sidebar-right-panel')).toBe('push')
+      const tab = panel.locator('[data-dockkit-tab]').filter({ hasText: 'Files' })
+      const bounds = (await tab.boundingBox())!
+      await page.mouse.move(bounds.x + 6, bounds.y + bounds.height / 2)
+      await page.mouse.down()
+      try {
+        await page.mouse.move(190, 400, { steps: 8 })
+      } finally { await page.mouse.up() }
+      const floating = page.locator('[data-dockkit-float]')
+      await floating.waitFor()
+      await page.setViewportSize({ width: 390, height: 844 })
+      const box = (await floating.boundingBox())!
+      expect(box.x).toBeLessThan(390)
+      expect(box.x + box.width).toBeGreaterThan(0)
+      const point = { x: (Math.max(0, box.x) + Math.min(390, box.x + box.width)) / 2, y: box.y + 40 }
+      await expect.poll(() => floating.evaluate((el, at) => el.contains(document.elementFromPoint(at.x, at.y)), point)).toBe(true)
+      await assertAboveRightPanel(point)
+    } finally {
+      await browser.close()
+    }
+  } finally {
+    await scaffold.close()
+  }
+})
diff --git a/apps/web/tests/sidebar-right.e2e.ts b/apps/web/tests/sidebar-right.e2e.ts
index 307e1adf12..4e5be429ce 100644
--- a/apps/web/tests/sidebar-right.e2e.ts
+++ b/apps/web/tests/sidebar-right.e2e.ts
@@ -1128,8 +1128,28 @@ describe('web e2e: shipped right Sidebar', () => {
       expect(await column.locator('[data-dockkit-tab-close]').count()).toBe(0)
       expect(await column.locator('[data-dockkit-tab-quiet]').count()).toBe(1)
       await column.locator('[data-dockkit-tab]').first().click({ button: 'right' })
-      expect(await page.locator('[data-dockkit-tab-menu]').isVisible()).toBe(false)
+      // Wait for prepared content, rather than passing before the opening delay.
+      const emptyMenu = page.locator('[data-context-menu][role="menu"]')
+      await emptyMenu.waitFor({ state: 'attached' })
+      expect(await emptyMenu.evaluate(node => getComputedStyle(node).display)).toBe('none')
+      expect(await emptyMenu.isVisible()).toBe(false)
       expect(await page.getByRole('menu').count()).toBe(0)
+      expect(await column.locator('[data-dockkit-tab]').first().evaluate(node => node.contains(document.activeElement))).toBe(true)
+      const backingSize = await page.locator('[data-menu-backing]').evaluate((node) => {
+        const root = document.documentElement
+        const platform = root.getAttribute('data-platform')
+        root.setAttribute('data-platform', 'darwin')
+        try {
+          const { width, height } = node.getBoundingClientRect()
+          return { width, height }
+        } finally {
+          if (platform === null) root.removeAttribute('data-platform')
+          else root.setAttribute('data-platform', platform)
+        }
+      })
+      expect(backingSize).toEqual({ width: 0, height: 0 })
+      await page.keyboard.press('Escape')
+      await emptyMenu.waitFor({ state: 'detached' })
 
       // Any other tab standing alone closes together with the column. Open the
       // sample file, close the guide (an ordinary close with two tabs), then
@@ -1231,13 +1251,10 @@ describe('web e2e: shipped right Sidebar', () => {
       // is the secondary press.
       expect(await column.locator('[data-dockkit-tab-more]').count()).toBe(0)
       await column.locator('[data-dockkit-tab]').filter({ hasText: 'Start' }).click({ button: 'right' })
-      const menu = page.locator('[data-dockkit-tab-menu]')
+      const menu = page.locator('[data-context-menu][role="menu"]')
       await expect.poll(async () => await menu.count()).toBe(1)
 
-      // The kit's one item; the extension seat is declared and rendered, and
-      // with no registrant it contributes nothing, which is what "declared, not
-      // speculative" looks like from the outside.
-      await expect.poll(async () => await menu.getByRole('menuitem').allInnerTexts()).toEqual(['Close'])
+      await expect.poll(() => menu.ariaSnapshot()).toBe('- menu:\n  - menuitem "Close"\n  - menuitem "Close Other Tabs"')
       // The menu hangs below the strip that clips its overflow. Its pixels are
       // its own: a hit test at its centre lands on it, not on whatever the
       // strip would have shown through a clipped box.
diff --git a/apps/web/tests/stats-truncated-tooltip.e2e.ts b/apps/web/tests/stats-truncated-tooltip.e2e.ts
index 18e7d5e64c..fc3e25b419 100644
--- a/apps/web/tests/stats-truncated-tooltip.e2e.ts
+++ b/apps/web/tests/stats-truncated-tooltip.e2e.ts
@@ -92,7 +92,7 @@ describe('web e2e: truncated composer statistics', () => {
     const cut = () => label.evaluate(element => element.scrollWidth > element.clientWidth)
     expect(await cut()).toBe(false)
 
-    await page.setViewportSize({ width: 390, height: 900 })
+    await page.setViewportSize({ width: 334, height: 900 })
     await expect.poll(cut).toBe(true)
     await usagePill.hover()
     await expect.poll(() => tooltip.textContent()).toBe(USAGE_READING)
diff --git a/apps/web/tests/support.ts b/apps/web/tests/support.ts
index 953f701fc9..ad741f474d 100644
--- a/apps/web/tests/support.ts
+++ b/apps/web/tests/support.ts
@@ -200,6 +200,23 @@ export function probeFreePort(): Promise<number> {
   })
 }
 
+/**
+ * Open collapsed mobile navigation before using a sidebar action.
+ * @param page - browser page with the mounted sidebar.
+ * @param locale - current UI language.
+ */
+export async function revealNavigationDrawer(page: Page, locale: 'en' | 'zh' | 'ja'): Promise<void> {
+  const drawer = await page.evaluate(() => window.innerWidth < 768
+    && !document.documentElement.hasAttribute('data-windows-titlebar'))
+  await page.waitForFunction(expected => Boolean(document.querySelector('[data-sidebar-drawer]')) === expected, drawer)
+  const closed = page.locator('[data-sidebar-drawer][data-sidebar-collapsed]')
+  if (await closed.count() === 0) return
+  await page.locator('[data-shell-leading]').getByRole('button', {
+    name: { en: 'Open sidebar', zh: '打开侧边栏', ja: 'サイドバーを開く' }[locale], exact: true,
+  }).click()
+  await closed.waitFor({ state: 'detached' })
+}
+
 /**
  * Drive the hero's workspace picker through the composed directory dialog
  * until the live composer unlocks. A fresh world has no Workspace, so the boot
@@ -219,6 +236,7 @@ export function probeFreePort(): Promise<number> {
  */
 export async function connectFreshWorkspace(page: Page, root: string, name = 'workspace'): Promise<void> {
   mkdirSync(join(root, name), { recursive: true })
+  await revealNavigationDrawer(page, 'en')
   await page.getByRole('button', { name: 'Add workspace', exact: true }).click()
   const dialog = page.getByRole('dialog', { name: 'Select Workspace Directory' })
   await dialog.waitFor({ timeout: 10_000 })
@@ -245,6 +263,7 @@ export async function connectFreshWorkspace(page: Page, root: string, name = 'wo
  */
 export async function connectFreshWorkspaceZh(page: Page, root: string, name = 'workspace', modelAvailable = true): Promise<void> {
   mkdirSync(join(root, name), { recursive: true })
+  await revealNavigationDrawer(page, 'zh')
   await page.getByRole('button', { name: '添加工作区', exact: true }).click()
   const dialog = page.getByRole('dialog', { name: '选择工作区目录' })
   await dialog.waitFor({ timeout: 10_000 })
@@ -346,6 +365,14 @@ export function conversationContextKey(kind: string, id: string): string {
  */
 export async function openSettings(page: Page, locale: 'en' | 'zh' | 'ja'): Promise<void> {
   const labels = { en: ['Account menu', 'Settings'], zh: ['账号菜单', '设置'], ja: ['アカウントメニュー', '設定'] } as const
-  await page.getByRole('button', { name: labels[locale][0], exact: true }).click()
+  const trigger = page.getByRole('button', {
+    name: labels[locale][0], exact: true, includeHidden: true,
+  })
+  await trigger.waitFor({ state: 'attached' })
+  await revealNavigationDrawer(page, locale)
+  if (!await trigger.isVisible()) {
+    await page.getByRole('button', { name: { en: 'Open sidebar', zh: '打开侧边栏', ja: 'サイドバーを開く' }[locale], exact: true }).click()
+  }
+  await trigger.click()
   await page.getByRole('menuitem', { name: labels[locale][1], exact: true }).click()
 }
diff --git a/apps/web/tests/window-drag-coverage.e2e.ts b/apps/web/tests/window-drag-coverage.e2e.ts
index 87c468a901..70fd84f7a1 100644
--- a/apps/web/tests/window-drag-coverage.e2e.ts
+++ b/apps/web/tests/window-drag-coverage.e2e.ts
@@ -107,10 +107,10 @@ async function collectedRegions(page: Page, selector: string): Promise<Collected
       const hits = interactive
         ? samples.filter(([x, y]) => {
           const top = document.elementFromPoint(x, y)
-          // A pane's programmatic focus target also contains its window-drag strip.
-          // The strip owns those pixels; controls inside it still need their own subtraction.
-          const strip = top?.closest('[data-dockkit-strip][data-window-drag]')
-          if (element.matches('[data-dockkit-pane][tabindex="-1"]')
+          // Panes and the navigation dialog contain their own window-drag rows.
+          // Those rows own their pixels; controls inside still subtract themselves.
+          const strip = top?.closest('[data-window-drag]')
+          if (element.matches('[data-dockkit-pane][tabindex="-1"], [data-shortcut-modal="sidebar"][role="dialog"]')
             && strip != null && element.contains(strip)) return false
           return top !== null && (top === element || element.contains(top))
         })
@@ -503,6 +503,32 @@ describe('web e2e: macOS window drag coverage', () => {
     }
   }, 120_000)
 
+  it('keeps the drawer titlebar draggable without swallowing its close button', async () => {
+    const { page, tripwire } = await desktopPage()
+    try {
+      await page.setViewportSize({ width: 571, height: 696 })
+      await page.locator('[data-sidebar-drawer][data-sidebar-collapsed]').waitFor()
+      await page.locator('[data-shell-leading]').getByRole('button', { name: 'Open sidebar', exact: true }).click()
+      const drawer = page.getByRole('dialog', { name: 'Navigation', exact: true })
+      await drawer.waitFor()
+      await settled(page)
+      const toggle = drawer.getByRole('button', { name: 'Collapse sidebar', exact: true })
+      const button = (await toggle.boundingBox())!
+      const seat = await rectOf(page, '[data-shell-leading]')
+      const regions = await collectedRegions(page, INTERACTIVE_SELECTOR)
+      const y = button.y + button.height / 2
+      expect(isDraggableAt(regions, seat.x + seat.width / 2, y), 'the inactive header controls behind the drawer').toBe(true)
+      expect(isDraggableAt(regions, (seat.x + seat.width + button.x) / 2, y), 'the gap before the close button').toBe(true)
+      expect(isDraggableAt(regions, button.x + button.width / 2, y), 'the close button').toBe(false)
+      expect(swallowedBoxes(regions)).toEqual([])
+      await toggle.click()
+      await drawer.waitFor({ state: 'hidden' })
+      expect(tripwire.pageErrors).toEqual([])
+    } finally {
+      await page.close()
+    }
+  })
+
   it('keeps an entry page’s chrome row draggable', async () => {
     const { page, tripwire } = await desktopPage()
     try {
diff --git a/apps/web/tests/workspace-management.e2e.ts b/apps/web/tests/workspace-management.e2e.ts
index ba6cb7cbe3..096c159be4 100644
--- a/apps/web/tests/workspace-management.e2e.ts
+++ b/apps/web/tests/workspace-management.e2e.ts
@@ -567,7 +567,10 @@ describe('web e2e: workspace management (create / rename / grouping / hover affo
       const consoleWatch = watchConsole(hoverPage)
       await hoverPage.goto(scaffold.authenticatedUrl)
       const row = await seededSessionRow(hoverPage)
+      await row.click()
+      await hoverPage.getByText('DONE', { exact: true }).waitFor()
       const title = row.locator('[class*="title"]')
+      await expect.poll(() => title.innerText()).not.toBe('Untitled')
       const card = hoverPage.getByRole('button', { name: `Copy: ${await title.innerText()}` })
       const tooltip = hoverPage.getByRole('tooltip')
       const observations: { stage: string; details: boolean; tooltips: string[] }[] = []
@@ -575,6 +578,7 @@ describe('web e2e: workspace management (create / rename / grouping / hover affo
         observations.push({ stage, details: await card.count() > 0, tooltips: await tooltip.allTextContents() })
       }
       const clockStart = Date.now()
+      await hoverPage.getByRole('button', { name: 'Account menu', exact: true }).hover()
       await hoverPage.clock.install({ time: clockStart })
       await hoverPage.clock.pauseAt(clockStart + 1000)
       await title.hover()
@@ -612,9 +616,11 @@ describe('web e2e: workspace management (create / rename / grouping / hover affo
 
       const menu = row.getByRole('button', { name: /^Session actions for / })
       await menu.click()
+      await hoverPage.clock.runFor(1000)
       await hoverPage.getByRole('menu').waitFor()
       expect(await card.count()).toBe(0)
       await hoverPage.keyboard.press('Escape')
+      await hoverPage.clock.runFor(1000)
       await hoverPage.getByRole('menu').waitFor({ state: 'detached' })
       await title.hover()
       await hoverPage.clock.runFor(1600)
@@ -821,8 +827,10 @@ describe('web e2e: workspace management (create / rename / grouping / hover affo
     await item.hover()
     await page.waitForTimeout(POINTER_HOLD_MS)
     expect(await page.getByRole('menuitem', { name: 'Rename' }).count()).toBe(1)
-    // Pointer-leave dismissal still applies once the pointer genuinely leaves.
+    // Context menus stay open across pointer departure and dismiss on an outside press.
     await page.getByRole('button', { name: 'Account menu', exact: true }).hover()
+    expect(await item.isVisible()).toBe(true)
+    await page.locator('[data-row-key]').first().click()
     await expect.poll(() => page.getByRole('menuitem', { name: 'Rename' }).count(), { timeout: 5_000 }).toBe(0)
     expect(tripwire.pageErrors).toEqual([])
   }, 60_000)
@@ -862,9 +870,8 @@ describe('web e2e: workspace management (create / rename / grouping / hover affo
     await page.waitForSelector('[class*="frame"]', { timeout: 30_000 })
     acknowledgeReloadConnectionLoss(tripwire, warningStart)
     await expect.poll(() => page.getByText('Workspaces', { exact: true }).count(), { timeout: 15_000 }).toBe(1)
-    // Initial Workspace reconnection can focus the composer after the tree renders.
-    // Finish that navigation before the next test opens a path editor.
-    await page.locator('[role="treeitem"][aria-selected="true"]').waitFor({ timeout: 15_000 })
+    // The last Session can leave the new-session page with no selected row.
+    // Wait for composer focus so reconnection cannot steal the next editor's focus.
     await expect.poll(
       () => page.locator('[data-composer-input][contenteditable="true"]')
         .evaluate(element => element === document.activeElement),
diff --git a/apps/web/tsconfig.json b/apps/web/tsconfig.json
index 44dcc4fbdd..75efc1547d 100644
--- a/apps/web/tsconfig.json
+++ b/apps/web/tsconfig.json
@@ -23,9 +23,11 @@
   // this client-registered project must not also hold them (one program
   // cannot see both sides of the cordis Context merges).
   "exclude": [
+    "tests/sidebar-drawer.e2e.ts",
     "tests/creation-recommendations.e2e.ts",
     "tests/plugin-recommendations.e2e.ts",
     "tests/japanese-plugin-metadata.e2e.ts",
+    "tests/context-menus.e2e.ts",
     "tests/additional-locales.e2e.ts",
     "tests/rich-text-quotes.e2e.ts",
     "tests/hover-input.e2e.ts",
@@ -113,6 +115,7 @@
     "tests/plugin-hmr-lifecycle.e2e.ts",
     "tests/plugin-install-registry.e2e.ts",
     "tests/plugin-install-github.e2e.ts",
+    "tests/plugin-install-silent-failure.e2e.ts",
     "tests/client-plugin-live.e2e.ts",
     "tests/icon-skin.e2e.ts",
     "tests/draft-initialization.e2e.ts",
diff --git a/benchmarks/session-corpus/README.i18n.yaml b/benchmarks/session-corpus/README.i18n.yaml
index 2162840b3e..5e02d08e37 100644
--- a/benchmarks/session-corpus/README.i18n.yaml
+++ b/benchmarks/session-corpus/README.i18n.yaml
@@ -12,8 +12,8 @@
   en: 66a769ce60d49ff3
   zh: 7e0bfa7c598157fa
 /session-corpus-benchmarks/run:
-  en: 2560e832041ae481
-  zh: 2fbbff71135e52ab
+  en: c770082e58aa8194
+  zh: 339d659595a1f97d
 /session-corpus-benchmarks/measurements:
   en: c357c231c3bfb588
   zh: 3d901a2caccf2587
diff --git a/benchmarks/session-corpus/README.md b/benchmarks/session-corpus/README.md
index d504417d77..f55fc563ec 100644
--- a/benchmarks/session-corpus/README.md
+++ b/benchmarks/session-corpus/README.md
@@ -18,7 +18,7 @@ Measure the Web Host's Session list, content search, and fork over synthetic cor
 
 From the repository root, build the libraries and workers with `pnpm run build:bench`, then run `pnpm exec vitest run --config vitest.bench.config.ts benchmarks/session-corpus/session-corpus.bench.ts`. Do not overlap timing runs with builds or other benchmarks. Seeding writes about 1.5 GB of Zstandard logs under a private temporary root, which the test removes after success or failure.
 
-The test reports every fresh-process sample, the CPU model, available parallelism, platform, and Node version, and enforces median budgets. Its last case fails when the file, including seeding, exceeds five minutes. A failed worker reports its exit, signal, timeout, and stderr tail. The required benchmark lane discovers this file automatically.
+The test reports every fresh-process sample, the CPU model, available parallelism, platform, and Node version, and enforces median budgets. Its last case fails when the file, including seeding, exceeds five minutes. Fork workers use a fixed V8 heap limit; peak RSS still measures the whole process. A failed worker reports its exit, signal, timeout, and stderr tail. The required benchmark lane discovers this file automatically.
 
 <a id="measurements"></a>
 
diff --git a/benchmarks/session-corpus/README.zh.md b/benchmarks/session-corpus/README.zh.md
index 1077b5233e..e7b1f1586a 100644
--- a/benchmarks/session-corpus/README.zh.md
+++ b/benchmarks/session-corpus/README.zh.md
@@ -18,7 +18,7 @@
 
 在仓库根目录使用 `pnpm run build:bench` 构建库和 worker，然后运行 `pnpm exec vitest run --config vitest.bench.config.ts benchmarks/session-corpus/session-corpus.bench.ts`。不要让计时运行与构建或其他基准重叠。播种过程会在私有临时根目录下写入约 1.5 GB 的 Zstandard 日志，测试成功或失败后都会删除该目录。
 
-测试报告每个新进程样本、CPU 型号、可用并行度、平台和 Node 版本，并约束中位数预算。当整个文件（包括播种）超过五分钟时，最后一个用例失败。worker 失败时报告退出状态、信号、超时和 stderr 末尾。必需基准通道自动发现此文件。
+测试报告每个新进程样本、CPU 型号、可用并行度、平台和 Node 版本，并约束中位数预算。当整个文件（包括播种）超过五分钟时，最后一个用例失败。Fork worker 使用固定的 V8 堆上限；峰值 RSS 仍测量整个进程。worker 失败时报告退出状态、信号、超时和 stderr 末尾。必需基准通道自动发现此文件。
 
 <a id="measurements"></a>
 
diff --git a/benchmarks/session-corpus/session-corpus.bench.ts b/benchmarks/session-corpus/session-corpus.bench.ts
index 00bc2d2979..3bbb66809c 100644
--- a/benchmarks/session-corpus/session-corpus.bench.ts
+++ b/benchmarks/session-corpus/session-corpus.bench.ts
@@ -29,6 +29,8 @@ const CORPUS = { search: 1_000, fork: 1_000, list: 3_000 } as const
 const FILE_LIMIT_MS = 300_000
 /** Per-child deadline: an endpoint slower than its budget still reports a measurement instead of a kill. */
 const WORKER_TIMEOUT_MS = FILE_LIMIT_MS
+/** Fixed old-space capacity makes fork RSS comparable across hosted V8 heap defaults. */
+const FORK_HEAP_LIMIT_MB = 512
 /** Fresh processes per list and fork-strata scenario; the median enforces each budget. */
 const ATTEMPTS = { list: 3, fork: 3 } as const
 /** Concurrent anchor-preparation processes; standard hosted runners have two CPUs. */
@@ -119,7 +121,10 @@ function serialDeadline(workers: number): number {
 }
 
 async function run<Report extends SessionCorpusReport>(args: readonly string[]): Promise<Report> {
-  const outcome = await runBuiltBenchmarkWorker<Report>({ worker: WORKER, args, timeoutMs: WORKER_TIMEOUT_MS, exposeGc: true })
+  const outcome = await runBuiltBenchmarkWorker<Report>({
+    worker: WORKER, args, timeoutMs: WORKER_TIMEOUT_MS, exposeGc: true,
+    ...(args[1] === 'fork' ? { heapLimitMb: FORK_HEAP_LIMIT_MB } : {}),
+  })
   if (outcome.report === undefined) {
     const stderr = outcome.stderr.trim().split('\n').slice(-20).join('\n')
     throw new Error(`session-corpus worker ${args[1] ?? ''} failed: exit=${String(outcome.exitCode)}, `
diff --git a/docs/AGENTS.md b/docs/AGENTS.md
index 39ebd5cd9c..d1766b9e80 100644
--- a/docs/AGENTS.md
+++ b/docs/AGENTS.md
@@ -74,4 +74,4 @@ Hunt these in any doc; [dsh-doc](../.agents/skills/dsh-doc/SKILL.md) runs this l
 
 ## Repository references
 
-Use relative Markdown links for current files and tags or PR numbers for historical references. `verify-md-links` checks local targets. [Reference validation](../scripts/verify-repository-references.ts) rejects actual commit identifiers and disallowed organization URLs in maintained files.
+Use relative Markdown links for current files and tags or PR numbers for historical references. `verify-md-links` checks local targets. [Reference validation](../scripts/verify-repository-references.ts) rejects commit identifiers containing a hexadecimal letter and disallowed organization URLs in maintained files. Decimal-only tokens are ignored to avoid collisions with numeric data, even when they identify commits.
diff --git a/docs/capability-seams.i18n.yaml b/docs/capability-seams.i18n.yaml
index cb8f632442..f9140a3c2d 100644
--- a/docs/capability-seams.i18n.yaml
+++ b/docs/capability-seams.i18n.yaml
@@ -6,5 +6,5 @@
   en: 41d772192075e133
   zh: 5ef3da69b4de1d8a
 /capability-seams-and-core-services:
-  en: cbe99e1985f2deae
-  zh: 6e524e7a644ae2d6
+  en: 5e42f2392f0457d6
+  zh: a694691c079e36fb
diff --git a/docs/capability-seams.md b/docs/capability-seams.md
index 14a1a92890..faf80ef4fa 100644
--- a/docs/capability-seams.md
+++ b/docs/capability-seams.md
@@ -84,9 +84,10 @@ flowchart LR
   pkg_llm_replay["llm-replay"]
   pkg_agent_loop["agent-loop"]
   pkg_compaction_basic["compaction-basic"]
+  pkg_session_log_deepseek["session-log-deepseek"]
+  svc_sessionLogDeepSeek["ctx.sessionLogDeepSeek<br/>Session-log upload policy"]
   pkg_deepseek_llm_api_extensions["deepseek-llm-api-extensions"]
   svc_deepseekLlmApiExtensions["ctx.deepseekLlmApiExtensions<br/>Official DeepSeek request extensions"]
-  pkg_session_log_deepseek["session-log-deepseek"]
   pkg_plugin_package_inventory_deepseek["plugin-package-inventory-deepseek"]
   pkg_token_meter["token-meter"]
   svc_tokenMeter["ctx.tokenMeter<br/>Replay token measurement"]
@@ -312,6 +313,8 @@ flowchart LR
   pkg_cordis_host_runner["cordis-host-runner"]
   svc_dynamicCordisRunner["ctx.dynamicCordisRunner<br/>Dynamic Cordis package host runner"]
   svc_cordisInspect["ctx.cordisInspect<br/>Dynamic Cordis inspect registry"]
+  pkg_experimental_liveshare["experimental-liveshare"]
+  svc_liveshareShares["ctx.liveshareShares<br/>Owner share management Remote"]
   pkg_action_cards --> svc_actionCards
   pkg_agent --> svc_agents
   pkg_agent_default_model --> svc_agentDefaultModel
@@ -369,6 +372,7 @@ flowchart LR
   pkg_experimental_forge --> svc_forge
   pkg_experimental_forge_github --> svc_forge
   pkg_experimental_forge_session --> svc_forgeSession
+  pkg_experimental_liveshare --> svc_liveshareShares
   pkg_experimental_ptc_runtime_python --> svc_ptcRuntime
   pkg_experimental_speech_to_text --> svc_speechToText
   pkg_experimental_speech_to_text_sensevoice --> svc_speechToText
@@ -419,6 +423,7 @@ flowchart LR
   pkg_schedule --> svc_schedule
   pkg_session --> svc_sessions
   pkg_session_log_deepseek --> svc_deepseekLlmApiExtensions
+  pkg_session_log_deepseek --> svc_sessionLogDeepSeek
   pkg_session_persistence --> svc_sessionPersistence
   pkg_session_persistence_jsonl --> svc_sessionPersistence
   pkg_session_projection --> svc_sessionProjections
@@ -658,7 +663,7 @@ flowchart LR
 | `ctx.connection` | `core` | [`client-connection`](../packages/client/connection) | - | [`api-gateway`](../packages/api/gateway), [`host-frontend-static`](../packages/host/frontend-static) | - | Owns browser authentication and shared HTTP request dispatch; API adapters register endpoints and streams. |
 | `ctx.forge` | `seam` | [`experimental-forge`](../packages/experimental/forge) | [`experimental-forge-github`](../packages/experimental/forge-github) | [`experimental-forge-session`](../packages/experimental/forge-session), [`experimental-client-ui-forge`](../packages/experimental/client-ui-forge) | - | Providers map remote and change request URLs, look up change requests by head branch, and read status in batches; watchers of one change request share one polling loop. |
 | `ctx.forgeSession` | `service` | [`experimental-forge-session`](../packages/experimental/forge-session) | - | [`experimental-client-ui-forge`](../packages/experimental/client-ui-forge) | - | A Session projection derives bindings from shell results and binding records and publishes their URLs without status to clients; push results trigger head-branch discovery, and Session watchers poll bound change requests through the forge registry. |
-| `ctx.forgePanel` | `service` | [`experimental-client-ui-forge`](../packages/experimental/client-ui-forge) | - | - | - | Streams one panel state per followed Session: a read-only Git inspection in the Session sandbox, the recognized code host and its sign-in, and the bound change requests with polled status. |
+| `ctx.forgePanel` | `service` | [`experimental-client-ui-forge`](../packages/experimental/client-ui-forge) | - | - | - | Streams one panel state per followed Session: Git inspection using Session permissions, the recognized code host and its sign-in, and the bound change requests with polled status. |
 | `ctx.worktrees` | `seam` | [`experimental-worktree`](../packages/experimental/worktree) | [`experimental-worktree`](../packages/experimental/worktree) | [`experimental-tool-worktree`](../packages/experimental/tool-worktree) | - | Explicit experimental creation from a pinned local commit. Existing write permissions govern checkout and shared Git metadata; the working-directory service owns the resulting Session directory. |
 | `ctx.workingDirectory` | `seam` | [`working-directory`](../packages/session/working-directory) | [`working-directory`](../packages/session/working-directory) | [`tool-working-directory`](../packages/session/tool-working-directory), [`tool-fs`](../packages/fs/tool-fs), [`tool-bash`](../packages/shell/tool-bash), [`tool-pwsh`](../packages/shell/tool-pwsh), [`subagent`](../packages/subagent/subagent), [`sdk-jsonrpc-server`](../packages/sdk/server) | - | One Session projection owns the effective execution directory. The filesystem validates changes; user context reports them while original metadata and write grants stay fixed. |
 | `ctx.mcpResources` | `seam` | [`mcp-resources`](../packages/mcp/mcp-resources) | [`mcp-client`](../packages/mcp/mcp-client) | [`mcp-resources`](../packages/mcp/mcp-resources) | - | Connection-owned providers serve shared resource tools in the calling agent scope. |
@@ -669,6 +674,7 @@ flowchart LR
 | `ctx.attachments` | `seam` | [`attachment`](../packages/attachment/attachment) | [`attachment-local`](../packages/attachment/attachment-local) | [`api-session-controller`](../packages/api/session-controller), [`tool-fs`](../packages/fs/tool-fs), [`llm-pi-ai`](../packages/llm/llm-pi-ai), [`llm-deepseek`](../packages/llm/llm-deepseek) | - | The host commits accepted images before session events; provider adapters resolve authorized durable references into provider-native content. |
 | `ctx.fileUploads` | `core` | [`client-file-upload`](../packages/client/file-upload) | - | [`api-session-controller`](../packages/api/session-controller) | - | Owns streaming intake, durable storage, and staged receipt lifetime; the Session controller binds receipts to accepted submissions. |
 | `ctx.llm` | `seam` | [`llm`](../packages/llm/llm) | [`llm-deepseek`](../packages/llm/llm-deepseek), [`llm-pi-ai`](../packages/llm/llm-pi-ai), [`llm-replay`](../packages/test-support/llm-replay) | [`agent-loop`](../packages/core/agent-loop), [`compaction-basic`](../packages/compaction/compaction-basic) | - | Adapters register provider implementations; the loop and compaction call the provider-neutral stream service. |
+| `ctx.sessionLogDeepSeek` | `core` | [`session-log-deepseek`](../packages/session/session-log-deepseek) | - | - | - | Plugins register caller-owned exclusions before the canonical Session-log request contribution is prepared; unmatched requests use normal upload eligibility. |
 | `ctx.deepseekLlmApiExtensions` | `seam` | [`deepseek-llm-api-extensions`](../packages/llm/deepseek-llm-api-extensions) | [`session-log-deepseek`](../packages/session/session-log-deepseek), [`plugin-package-inventory-deepseek`](../packages/llm/plugin-package-inventory-deepseek) | [`llm-deepseek`](../packages/llm/llm-deepseek) | - | Plugins prepare independent top-level fields; the official adapter merges them and commits their delivery state after HTTP acceptance. |
 | `ctx.tokenMeter` | `core` | [`token-meter`](../packages/llm/token-meter) | - | [`compaction-basic`](../packages/compaction/compaction-basic) | - | Owns isolated per-session replay folds; pressure consumers share immutable revisioned measurements. |
 | `ctx.toolResultPruner` | `core` | [`compaction-tool-result-pruner`](../packages/compaction/compaction-tool-result-pruner) | - | [`compaction-basic`](../packages/compaction/compaction-basic) | - | Rewrites oversized current tool results through replayable single-node surface replacements before summary compaction. |
@@ -751,5 +757,6 @@ flowchart LR
 | `ctx.lsp` | `seam` | [`lsp`](../packages/lsp/lsp) | [`lsp-stdio`](../packages/lsp/lsp-stdio) | [`tool-lsp`](../packages/lsp/tool-lsp) | - | Provider registration and selection plus normalized query execution over exactly four operations; the seam offers no protocol escape hatch, so a backend translates into the normalized request and result. |
 | `ctx.dynamicCordisRunner` | `core` | [`cordis-host-runner`](../packages/extensions/cordis-host-runner) | - | [`tool-cordis`](../packages/extensions/tool-cordis) | - | Owns the in-memory definition registry, the vm sandbox for host halves, and the request-run round trip; browser pages reach the same service over the wire through its remote namespace. |
 | `ctx.cordisInspect` | `core` | [`cordis-host-runner`](../packages/extensions/cordis-host-runner) | - | [`tool-cordis`](../packages/extensions/tool-cordis) | - | Registers host inspect providers, mirrors the client provider manifest, and routes client queries through the dynamic Cordis transport. |
+| `ctx.liveshareShares` | `service` | [`experimental-liveshare`](../packages/experimental/liveshare) | - | - | - | Publishes the owner share-management operations as one Typert Remote namespace that the owner client face calls; every method delegates to the same operations the same-origin routes used. |
 
 Maintenance mode: hybrid: services are discovered from Cordis declarations; interface/implementation/consumer roles are classified in `scripts/gen-doc-graphs.ts` with a completeness guard.
diff --git a/docs/capability-seams.zh.md b/docs/capability-seams.zh.md
index 4e517bbab6..5156a43822 100644
--- a/docs/capability-seams.zh.md
+++ b/docs/capability-seams.zh.md
@@ -86,9 +86,10 @@ flowchart LR
   pkg_llm_replay["llm-replay"]
   pkg_agent_loop["agent-loop"]
   pkg_compaction_basic["compaction-basic"]
+  pkg_session_log_deepseek["session-log-deepseek"]
+  svc_sessionLogDeepSeek["ctx.sessionLogDeepSeek<br/>Session-log upload policy"]
   pkg_deepseek_llm_api_extensions["deepseek-llm-api-extensions"]
   svc_deepseekLlmApiExtensions["ctx.deepseekLlmApiExtensions<br/>Official DeepSeek request extensions"]
-  pkg_session_log_deepseek["session-log-deepseek"]
   pkg_plugin_package_inventory_deepseek["plugin-package-inventory-deepseek"]
   pkg_token_meter["token-meter"]
   svc_tokenMeter["ctx.tokenMeter<br/>Replay token measurement"]
@@ -314,6 +315,8 @@ flowchart LR
   pkg_cordis_host_runner["cordis-host-runner"]
   svc_dynamicCordisRunner["ctx.dynamicCordisRunner<br/>Dynamic Cordis package host runner"]
   svc_cordisInspect["ctx.cordisInspect<br/>Dynamic Cordis inspect registry"]
+  pkg_experimental_liveshare["experimental-liveshare"]
+  svc_liveshareShares["ctx.liveshareShares<br/>Owner share management Remote"]
   pkg_action_cards --> svc_actionCards
   pkg_agent --> svc_agents
   pkg_agent_default_model --> svc_agentDefaultModel
@@ -371,6 +374,7 @@ flowchart LR
   pkg_experimental_forge --> svc_forge
   pkg_experimental_forge_github --> svc_forge
   pkg_experimental_forge_session --> svc_forgeSession
+  pkg_experimental_liveshare --> svc_liveshareShares
   pkg_experimental_ptc_runtime_python --> svc_ptcRuntime
   pkg_experimental_speech_to_text --> svc_speechToText
   pkg_experimental_speech_to_text_sensevoice --> svc_speechToText
@@ -421,6 +425,7 @@ flowchart LR
   pkg_schedule --> svc_schedule
   pkg_session --> svc_sessions
   pkg_session_log_deepseek --> svc_deepseekLlmApiExtensions
+  pkg_session_log_deepseek --> svc_sessionLogDeepSeek
   pkg_session_persistence --> svc_sessionPersistence
   pkg_session_persistence_jsonl --> svc_sessionPersistence
   pkg_session_projection --> svc_sessionProjections
@@ -660,7 +665,7 @@ flowchart LR
 | `ctx.connection` | `core` | [`client-connection`](../packages/client/connection) | - | [`api-gateway`](../packages/api/gateway), [`host-frontend-static`](../packages/host/frontend-static) | - | 负责浏览器认证与共享 HTTP 请求分发；API 适配器注册端点和流。 |
 | `ctx.forge` | `seam` | [`experimental-forge`](../packages/experimental/forge) | [`experimental-forge-github`](../packages/experimental/forge-github) | [`experimental-forge-session`](../packages/experimental/forge-session), [`experimental-client-ui-forge`](../packages/experimental/client-ui-forge) | - | 提供方映射远端与变更请求 URL、按 head 分支查找变更请求并批量读取状态；同一变更请求的监听方共享一个轮询循环。 |
 | `ctx.forgeSession` | `service` | [`experimental-forge-session`](../packages/experimental/forge-session) | - | [`experimental-client-ui-forge`](../packages/experimental/client-ui-forge) | - | Session 投影从 shell 结果与绑定记录派生绑定，并把不含状态的 URL 发布给客户端；推送结果触发按 head 分支的发现，Session 监听方通过 forge 注册表轮询已绑定的变更请求。 |
-| `ctx.forgePanel` | `service` | [`experimental-client-ui-forge`](../packages/experimental/client-ui-forge) | - | - | - | 为每个被跟随的 Session 推送一份面板状态：在 Session 沙箱中进行的只读 Git 检查、识别出的代码托管平台及其登录状态，以及带轮询状态的已绑定变更请求。 |
+| `ctx.forgePanel` | `service` | [`experimental-client-ui-forge`](../packages/experimental/client-ui-forge) | - | - | - | 为每个被跟随的 Session 推送一份面板状态：使用 Session 权限进行的 Git 检查、识别出的代码托管平台及其登录状态，以及带轮询状态的已绑定变更请求。 |
 | `ctx.worktrees` | `seam` | [`experimental-worktree`](../packages/experimental/worktree) | [`experimental-worktree`](../packages/experimental/worktree) | [`experimental-tool-worktree`](../packages/experimental/tool-worktree) | - | 显式实验组合从固定的本地提交创建工作树。检出目录与共享 Git 元数据受现有写权限约束；工作目录服务拥有创建后的 Session 目录。 |
 | `ctx.workingDirectory` | `seam` | [`working-directory`](../packages/session/working-directory) | [`working-directory`](../packages/session/working-directory) | [`tool-working-directory`](../packages/session/tool-working-directory), [`tool-fs`](../packages/fs/tool-fs), [`tool-bash`](../packages/shell/tool-bash), [`tool-pwsh`](../packages/shell/tool-pwsh), [`subagent`](../packages/subagent/subagent), [`sdk-jsonrpc-server`](../packages/sdk/server) | - | 一个 Session 投影拥有有效执行目录。文件系统验证变更，用户上下文报告目录信息，原始元数据与写入授权保持不变。 |
 | `ctx.mcpResources` | `seam` | [`mcp-resources`](../packages/mcp/mcp-resources) | [`mcp-client`](../packages/mcp/mcp-client) | [`mcp-resources`](../packages/mcp/mcp-resources) | - | 连接所有者提供的操作在调用 agent 的作用域内服务于共享资源工具。 |
@@ -671,6 +676,7 @@ flowchart LR
 | `ctx.attachments` | `seam` | [`attachment`](../packages/attachment/attachment) | [`attachment-local`](../packages/attachment/attachment-local) | [`api-session-controller`](../packages/api/session-controller), [`tool-fs`](../packages/fs/tool-fs), [`llm-pi-ai`](../packages/llm/llm-pi-ai), [`llm-deepseek`](../packages/llm/llm-deepseek) | - | 宿主会在会话事件之前提交已接受的图片；提供方适配器将已授权的持久引用解析为提供方原生内容。 |
 | `ctx.fileUploads` | `core` | [`client-file-upload`](../packages/client/file-upload) | - | [`api-session-controller`](../packages/api/session-controller) | - | 负责流式接收、持久存储和暂存回执生命周期；Session Controller 将回执绑定到已接受的提交。 |
 | `ctx.llm` | `seam` | [`llm`](../packages/llm/llm) | [`llm-deepseek`](../packages/llm/llm-deepseek), [`llm-pi-ai`](../packages/llm/llm-pi-ai), [`llm-replay`](../packages/test-support/llm-replay) | [`agent-loop`](../packages/core/agent-loop), [`compaction-basic`](../packages/compaction/compaction-basic) | - | 适配器注册提供方实现；agent loop（智能体循环）与压缩功能调用提供方无关的流服务。 |
+| `ctx.sessionLogDeepSeek` | `core` | [`session-log-deepseek`](../packages/session/session-log-deepseek) | - | - | - | 插件在准备权威 Session 日志请求贡献前注册归调用方所有的排除条件；没有条件匹配的请求应用普通上传资格判断。 |
 | `ctx.deepseekLlmApiExtensions` | `seam` | [`deepseek-llm-api-extensions`](../packages/llm/deepseek-llm-api-extensions) | [`session-log-deepseek`](../packages/session/session-log-deepseek), [`plugin-package-inventory-deepseek`](../packages/llm/plugin-package-inventory-deepseek) | [`llm-deepseek`](../packages/llm/llm-deepseek) | - | 插件准备彼此独立的顶层字段；官方适配器会合并这些字段，并在 HTTP 接受后提交其交付状态。 |
 | `ctx.tokenMeter` | `core` | [`token-meter`](../packages/llm/token-meter) | - | [`compaction-basic`](../packages/compaction/compaction-basic) | - | 拥有按会话隔离的回放折叠区；压力消费方共享不可变且带修订版本的测量结果。 |
 | `ctx.toolResultPruner` | `core` | [`compaction-tool-result-pruner`](../packages/compaction/compaction-tool-result-pruner) | - | [`compaction-basic`](../packages/compaction/compaction-basic) | - | 在摘要压缩前，通过可回放的单节点表层替换来改写过大的当前工具结果。 |
@@ -753,5 +759,6 @@ flowchart LR
 | `ctx.lsp` | `seam` | [`lsp`](../packages/lsp/lsp) | [`lsp-stdio`](../packages/lsp/lsp-stdio) | [`tool-lsp`](../packages/lsp/tool-lsp) | - | 提供方注册与选择，加上恰好四种操作的标准化查询执行；该 seam 不提供协议逃生口，后端必须转换为标准化请求和结果。 |
 | `ctx.dynamicCordisRunner` | `core` | [`cordis-host-runner`](../packages/extensions/cordis-host-runner) | - | [`tool-cordis`](../packages/extensions/tool-cordis) | - | 拥有内存定义注册表、Host 半的 vm 沙箱和 request-run 往返流程；浏览器页面通过其 Remote 命名空间在线访问同一服务。 |
 | `ctx.cordisInspect` | `core` | [`cordis-host-runner`](../packages/extensions/cordis-host-runner) | - | [`tool-cordis`](../packages/extensions/tool-cordis) | - | 注册 Host inspect 提供方、镜像 Client 提供方 manifest，并通过动态 Cordis 传输路由 Client 查询。 |
+| `ctx.liveshareShares` | `service` | [`experimental-liveshare`](../packages/experimental/liveshare) | - | - | - | 以单个 Typert Remote 命名空间发布 owner 分享管理操作，供 owner 客户端面调用；每个方法都委托给同源路由原先使用的同一组操作。 |
 
 维护模式：混合模式。服务从 Cordis 声明中发现；接口、实现和消费方角色在 `scripts/gen-doc-graphs.ts` 中分类，并设有完整性守卫。
diff --git a/docs/config-catalog.md b/docs/config-catalog.md
index 97ef33d221..a0a770bb22 100644
--- a/docs/config-catalog.md
+++ b/docs/config-catalog.md
@@ -729,7 +729,7 @@ export interface Config {
 ## `@deepseek-ai/dsh-compaction-basic`
 
 - `inject`: `llm` · `tokenMeter` · `sessions`
-- `source`: [`packages/compaction/compaction-basic/src/types.ts:40`](../packages/compaction/compaction-basic/src/types.ts)
+- `source`: [`packages/compaction/compaction-basic/src/types.ts:46`](../packages/compaction/compaction-basic/src/types.ts)
 
 ```ts config-catalog
 /** Basic compaction configuration with an optional exact-target policy table. */
@@ -1126,7 +1126,7 @@ export type Config = CuaConfig
 
 ## `@deepseek-ai/dsh-experimental-forge`
 
-- `source`: [`packages/experimental/forge/src/types.ts:205`](../packages/experimental/forge/src/types.ts)
+- `source`: [`packages/experimental/forge/src/types.ts:232`](../packages/experimental/forge/src/types.ts)
 
 ```ts config-catalog
 /** Poll cadence and fetch deadline for watched change requests. */
@@ -1160,7 +1160,7 @@ export interface Config {
   hosts?: string[]
   /** Deadline in milliseconds for one `gh` invocation. */
   timeoutMs?: number
-  /** Maximum captured bytes per `gh` output stream. */
+  /** Maximum captured bytes per `gh` output stream and combined JSON bytes of one complete check read. */
   maxOutputBytes?: number
 }
 ```
@@ -2997,7 +2997,7 @@ export interface JsonRpcConfig {
 
 - `inject`: `deepseekLlmApiExtensions` · `sessions`
 - `refs`: `Volatile` (`@deepseek-ai/cordis`)
-- `source`: [`packages/session/session-log-deepseek/src/index.ts:39`](../packages/session/session-log-deepseek/src/index.ts)
+- `source`: [`packages/session/session-log-deepseek/src/index.ts:47`](../packages/session/session-log-deepseek/src/index.ts)
 
 ```ts config-catalog
 /** Session-log request contribution configuration. */
@@ -4832,6 +4832,7 @@ These load from a `cordis.yml` entry with no `config:` block; they declare no co
 | `@deepseek-ai/dsh-client-ui-brand-official` | — | [`packages/client/ui-brand-official/src/index.ts`](../packages/client/ui-brand-official/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-chat` | — | [`packages/client/ui-chat/src/index.ts`](../packages/client/ui-chat/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-commands` | — | [`packages/client/ui-commands/src/index.ts`](../packages/client/ui-commands/src/index.ts) |
+| `@deepseek-ai/dsh-client-ui-context-menu` | — | [`packages/client/ui-context-menu/src/index.ts`](../packages/client/ui-context-menu/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-conversation` | — | [`packages/client/ui-conversation/src/index.ts`](../packages/client/ui-conversation/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-cordis` | — | [`packages/extensions/ui-cordis/src/index.ts`](../packages/extensions/ui-cordis/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-creation-recommendations` | — | [`packages/experimental/client-ui-creation-recommendations/src/index.ts`](../packages/experimental/client-ui-creation-recommendations/src/index.ts) |
@@ -4839,6 +4840,7 @@ These load from a `cordis.yml` entry with no `config:` block; they declare no co
 | `@deepseek-ai/dsh-client-ui-directory-picker-browse` | — | [`packages/client/ui-directory-picker-browse/src/index.ts`](../packages/client/ui-directory-picker-browse/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-directory-picker-native` | — | [`packages/client/ui-directory-picker-native/src/index.ts`](../packages/client/ui-directory-picker-native/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-entry-customization` | — | [`packages/client/ui-entry-customization/src/index.ts`](../packages/client/ui-entry-customization/src/index.ts) |
+| `@deepseek-ai/dsh-client-ui-file-actions` | — | [`packages/client/ui-file-actions/src/index.ts`](../packages/client/ui-file-actions/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-file-drag` | — | [`packages/client/ui-file-drag/src/index.ts`](../packages/client/ui-file-drag/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-goal` | — | [`packages/client/ui-goal/src/index.ts`](../packages/client/ui-goal/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-input-trigger` | — | [`packages/client/ui-input-trigger/src/index.ts`](../packages/client/ui-input-trigger/src/index.ts) |
@@ -4988,6 +4990,7 @@ Imported as libraries by other packages; a `cordis.yml` cannot load them.
 | `@deepseek-ai/dsh-experimental-cot-translation-bundle` | — | [`packages/experimental/cot-translation-bundle/src/index.ts`](../packages/experimental/cot-translation-bundle/src/index.ts) |
 | `@deepseek-ai/dsh-experimental-forge-bundle` | — | [`packages/experimental/forge-bundle/src/index.ts`](../packages/experimental/forge-bundle/src/index.ts) |
 | `@deepseek-ai/dsh-experimental-inspector-profile` | — | [`packages/experimental/inspector-profile/src/index.ts`](../packages/experimental/inspector-profile/src/index.ts) |
+| `@deepseek-ai/dsh-experimental-liveshare` | — | [`packages/experimental/liveshare/src/index.ts`](../packages/experimental/liveshare/src/index.ts) |
 | `@deepseek-ai/dsh-experimental-liveshare-protocol` | — | [`packages/experimental/liveshare-protocol/src/index.ts`](../packages/experimental/liveshare-protocol/src/index.ts) |
 | `@deepseek-ai/dsh-experimental-plugin-market-bundle` | — | [`packages/experimental/plugin-market-bundle/src/index.ts`](../packages/experimental/plugin-market-bundle/src/index.ts) |
 | `@deepseek-ai/dsh-experimental-ralph-bundle` | — | [`packages/experimental/ralph-bundle/src/index.ts`](../packages/experimental/ralph-bundle/src/index.ts) |
diff --git a/docs/config-catalog.zh.md b/docs/config-catalog.zh.md
index 747809634a..7e9c6f3506 100644
--- a/docs/config-catalog.zh.md
+++ b/docs/config-catalog.zh.md
@@ -731,7 +731,7 @@ export interface Config {
 ## `@deepseek-ai/dsh-compaction-basic`
 
 - `inject`: `llm` · `tokenMeter` · `sessions`
-- `source`: [`packages/compaction/compaction-basic/src/types.ts:40`](../packages/compaction/compaction-basic/src/types.ts)
+- `source`: [`packages/compaction/compaction-basic/src/types.ts:46`](../packages/compaction/compaction-basic/src/types.ts)
 
 ```ts config-catalog
 /** Basic compaction configuration with an optional exact-target policy table. */
@@ -1128,7 +1128,7 @@ export type Config = CuaConfig
 
 ## `@deepseek-ai/dsh-experimental-forge`
 
-- `source`: [`packages/experimental/forge/src/types.ts:205`](../packages/experimental/forge/src/types.ts)
+- `source`: [`packages/experimental/forge/src/types.ts:232`](../packages/experimental/forge/src/types.ts)
 
 ```ts config-catalog
 /** Poll cadence and fetch deadline for watched change requests. */
@@ -1162,7 +1162,7 @@ export interface Config {
   hosts?: string[]
   /** Deadline in milliseconds for one `gh` invocation. */
   timeoutMs?: number
-  /** Maximum captured bytes per `gh` output stream. */
+  /** Maximum captured bytes per `gh` output stream and combined JSON bytes of one complete check read. */
   maxOutputBytes?: number
 }
 ```
@@ -2999,7 +2999,7 @@ export interface JsonRpcConfig {
 
 - `inject`: `deepseekLlmApiExtensions` · `sessions`
 - `refs`: `Volatile` (`@deepseek-ai/cordis`)
-- `source`: [`packages/session/session-log-deepseek/src/index.ts:39`](../packages/session/session-log-deepseek/src/index.ts)
+- `source`: [`packages/session/session-log-deepseek/src/index.ts:47`](../packages/session/session-log-deepseek/src/index.ts)
 
 ```ts config-catalog
 /** Session-log request contribution configuration. */
@@ -4834,6 +4834,7 @@ export interface Config {
 | `@deepseek-ai/dsh-client-ui-brand-official` | — | [`packages/client/ui-brand-official/src/index.ts`](../packages/client/ui-brand-official/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-chat` | — | [`packages/client/ui-chat/src/index.ts`](../packages/client/ui-chat/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-commands` | — | [`packages/client/ui-commands/src/index.ts`](../packages/client/ui-commands/src/index.ts) |
+| `@deepseek-ai/dsh-client-ui-context-menu` | — | [`packages/client/ui-context-menu/src/index.ts`](../packages/client/ui-context-menu/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-conversation` | — | [`packages/client/ui-conversation/src/index.ts`](../packages/client/ui-conversation/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-cordis` | — | [`packages/extensions/ui-cordis/src/index.ts`](../packages/extensions/ui-cordis/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-creation-recommendations` | — | [`packages/experimental/client-ui-creation-recommendations/src/index.ts`](../packages/experimental/client-ui-creation-recommendations/src/index.ts) |
@@ -4841,6 +4842,7 @@ export interface Config {
 | `@deepseek-ai/dsh-client-ui-directory-picker-browse` | — | [`packages/client/ui-directory-picker-browse/src/index.ts`](../packages/client/ui-directory-picker-browse/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-directory-picker-native` | — | [`packages/client/ui-directory-picker-native/src/index.ts`](../packages/client/ui-directory-picker-native/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-entry-customization` | — | [`packages/client/ui-entry-customization/src/index.ts`](../packages/client/ui-entry-customization/src/index.ts) |
+| `@deepseek-ai/dsh-client-ui-file-actions` | — | [`packages/client/ui-file-actions/src/index.ts`](../packages/client/ui-file-actions/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-file-drag` | — | [`packages/client/ui-file-drag/src/index.ts`](../packages/client/ui-file-drag/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-goal` | — | [`packages/client/ui-goal/src/index.ts`](../packages/client/ui-goal/src/index.ts) |
 | `@deepseek-ai/dsh-client-ui-input-trigger` | — | [`packages/client/ui-input-trigger/src/index.ts`](../packages/client/ui-input-trigger/src/index.ts) |
@@ -4990,6 +4992,7 @@ export interface Config {
 | `@deepseek-ai/dsh-experimental-cot-translation-bundle` | — | [`packages/experimental/cot-translation-bundle/src/index.ts`](../packages/experimental/cot-translation-bundle/src/index.ts) |
 | `@deepseek-ai/dsh-experimental-forge-bundle` | — | [`packages/experimental/forge-bundle/src/index.ts`](../packages/experimental/forge-bundle/src/index.ts) |
 | `@deepseek-ai/dsh-experimental-inspector-profile` | — | [`packages/experimental/inspector-profile/src/index.ts`](../packages/experimental/inspector-profile/src/index.ts) |
+| `@deepseek-ai/dsh-experimental-liveshare` | — | [`packages/experimental/liveshare/src/index.ts`](../packages/experimental/liveshare/src/index.ts) |
 | `@deepseek-ai/dsh-experimental-liveshare-protocol` | — | [`packages/experimental/liveshare-protocol/src/index.ts`](../packages/experimental/liveshare-protocol/src/index.ts) |
 | `@deepseek-ai/dsh-experimental-plugin-market-bundle` | — | [`packages/experimental/plugin-market-bundle/src/index.ts`](../packages/experimental/plugin-market-bundle/src/index.ts) |
 | `@deepseek-ai/dsh-experimental-ralph-bundle` | — | [`packages/experimental/ralph-bundle/src/index.ts`](../packages/experimental/ralph-bundle/src/index.ts) |
diff --git a/docs/cordis-api/context.md b/docs/cordis-api/context.md
index 320b23de1c..453f607768 100644
--- a/docs/cordis-api/context.md
+++ b/docs/cordis-api/context.md
@@ -110,7 +110,7 @@ The root context of the application (every child context shares it). @experiment
 
 ```ts cordis-catalog
 /** Base URL used to resolve relative plugin/module specifiers, if the runtime sets one. */
-baseUrl?: string
+baseUrl?: string | undefined
 ```
 
 Base URL used to resolve relative plugin/module specifiers, if the runtime sets one.
diff --git a/docs/cordis-api/context.zh.md b/docs/cordis-api/context.zh.md
index b97fe51eb8..a5c7e36b4b 100644
--- a/docs/cordis-api/context.zh.md
+++ b/docs/cordis-api/context.zh.md
@@ -112,7 +112,7 @@ root: this
 
 ```ts cordis-catalog
 /** Base URL used to resolve relative plugin/module specifiers, if the runtime sets one. */
-baseUrl?: string
+baseUrl?: string | undefined
 ```
 
 用于解析相对插件／模块说明符的基础 URL，前提是运行时设置了该值。
diff --git a/docs/cordis-api/events.i18n.yaml b/docs/cordis-api/events.i18n.yaml
index 68421a5f2c..f423afad17 100644
--- a/docs/cordis-api/events.i18n.yaml
+++ b/docs/cordis-api/events.i18n.yaml
@@ -9,29 +9,29 @@
   en: 9d809e3de33dd783
   zh: b965aee4a65c6c1a
 /events/ctx-parallel-name-args:
-  en: e583c71acb606915
-  zh: 0560679b20f8d7f0
+  en: 9c0a63f484e33428
+  zh: 09ee4c26931324af
 /events/ctx-emit-name-args:
-  en: ff6f4023b66f8164
-  zh: af16d24d663a7eb7
+  en: b41bd01cf219cbd6
+  zh: 2e9660a05dc07cfc
 /events/ctx-serial-name-args:
-  en: c431c0e3ac72e854
-  zh: c43b7d899ea8161c
+  en: 46708104f4d6a034
+  zh: f1b7fcb92a5b05c0
 /events/ctx-bail-name-args:
-  en: 85b8b2178c3e3c33
-  zh: ad8af3e0743e231c
+  en: 6577e113d5b8ce40
+  zh: b925f8070cf387f7
 /events/ctx-waterfall-name-args:
-  en: 3b32d0511b7da48b
-  zh: e0ac62e59d8e2152
+  en: 105fda32f60c7cea
+  zh: c67e6c6051c9a1af
 /events/ctx-on-name-listener-options:
-  en: 74a1fe55f4a47ec8
-  zh: 87d37038af3bab0e
+  en: ec7c7e8a8b15d460
+  zh: 79eba67c31873b0b
 /events/ctx-once-name-listener-options:
-  en: 64802f0580705984
-  zh: 3f6ce2d7ce1e760d
+  en: 27143e45f63622dd
+  zh: 095f804dfa47ad37
 /events/eventoptions:
-  en: 937453f689836c80
-  zh: ebf0cc0f28127245
+  en: 14ed1031e4a7abee
+  zh: 2380e2f73f8931af
 /events/dispatchmode:
-  en: 1c8548fb249ed794
-  zh: 86b92a28f39b2a12
+  en: 1081bbd7aa27baf8
+  zh: cc4434892b0bb93f
diff --git a/docs/cordis-api/events.md b/docs/cordis-api/events.md
index 8b8eb2358e..1916532331 100644
--- a/docs/cordis-api/events.md
+++ b/docs/cordis-api/events.md
@@ -26,7 +26,7 @@ Dispatch an event, running all listeners concurrently.
 
 **Returns** a promise resolving once every listener has settled.
 
-[Source](../../vendor/cordis/src/events.ts#L44)
+[Source](../../vendor/cordis/src/events.ts#L43)
 
 ### ctx.emit(name, ...args)
 
@@ -46,7 +46,7 @@ Dispatch an event synchronously, ignoring listener return values.
 - `name` — the event name.
 - `args` — arguments passed to every listener.
 
-[Source](../../vendor/cordis/src/events.ts#L53)
+[Source](../../vendor/cordis/src/events.ts#L52)
 
 ### ctx.serial(name, ...args)
 
@@ -69,7 +69,7 @@ Dispatch an event, awaiting listeners in order until one bails.
 
 **Returns** the first bail value (non-null, non-false, non-undefined), if any.
 
-[Source](../../vendor/cordis/src/events.ts#L63)
+[Source](../../vendor/cordis/src/events.ts#L62)
 
 ### ctx.bail(name, ...args)
 
@@ -92,7 +92,7 @@ Dispatch an event, calling listeners in order until one bails.
 
 **Returns** the first bail value (non-null, non-false, non-undefined), if any.
 
-[Source](../../vendor/cordis/src/events.ts#L73)
+[Source](../../vendor/cordis/src/events.ts#L72)
 
 ### ctx.waterfall(name, ...args)
 
@@ -120,7 +120,7 @@ Each listener wraps the rest of the chain: calling `next()` invokes the next lis
 
 **Returns** the outermost listener's return value.
 
-[Source](../../vendor/cordis/src/events.ts#L86)
+[Source](../../vendor/cordis/src/events.ts#L85)
 
 ### ctx.on(name, listener, options?)
 
@@ -144,7 +144,7 @@ Register an event listener owned by the current fiber.
 
 **Returns** a disposer removing the listener; `true` if it was still registered.
 
-[Source](../../vendor/cordis/src/events.ts#L97)
+[Source](../../vendor/cordis/src/events.ts#L96)
 
 ### ctx.once(name, listener, options?)
 
@@ -168,7 +168,7 @@ Same as `on()`, but the listener disposes itself after its first call.
 
 **Returns** a disposer removing the listener; `true` if it was still registered.
 
-[Source](../../vendor/cordis/src/events.ts#L106)
+[Source](../../vendor/cordis/src/events.ts#L105)
 
 ## EventOptions
 
@@ -184,7 +184,7 @@ interface EventOptions {
 }
 ```
 
-[Source](../../vendor/cordis/src/events.ts#L112)
+[Source](../../vendor/cordis/src/events.ts#L111)
 
 ## DispatchMode
 
@@ -204,4 +204,4 @@ Event dispatch strategy used by the event service.
 type DispatchMode = 'emit' | 'parallel' | 'serial' | 'bail' | 'waterfall'
 ```
 
-[Source](../../vendor/cordis/src/events.ts#L32)
+[Source](../../vendor/cordis/src/events.ts#L31)
diff --git a/docs/cordis-api/events.zh.md b/docs/cordis-api/events.zh.md
index 60b0580496..b66a1fc4d3 100644
--- a/docs/cordis-api/events.zh.md
+++ b/docs/cordis-api/events.zh.md
@@ -28,7 +28,7 @@ parallel<K extends keyof Events>(thisArg: NoInfer<ThisType<Events[K]>>, name: K,
 
 **返回值**：一个 Promise，在所有监听器均已完成后兑现。
 
-[源码](../../vendor/cordis/src/events.ts#L44)
+[源码](../../vendor/cordis/src/events.ts#L43)
 
 ### ctx.emit(name, ...args)
 
@@ -48,7 +48,7 @@ emit<K extends keyof Events>(thisArg: NoInfer<ThisType<Events[K]>>, name: K, ...
 - `name`：事件名称。
 - `args`：传递给每个监听器的参数。
 
-[源码](../../vendor/cordis/src/events.ts#L53)
+[源码](../../vendor/cordis/src/events.ts#L52)
 
 ### ctx.serial(name, ...args)
 
@@ -71,7 +71,7 @@ serial<K extends keyof Events>(thisArg: NoInfer<ThisType<Events[K]>>, name: K, .
 
 **返回值**：第一个提前终止值（非 null、非 false 且非 undefined）；如果没有，则不返回此类值。
 
-[源码](../../vendor/cordis/src/events.ts#L63)
+[源码](../../vendor/cordis/src/events.ts#L62)
 
 ### ctx.bail(name, ...args)
 
@@ -94,7 +94,7 @@ bail<K extends keyof Events>(thisArg: NoInfer<ThisType<Events[K]>>, name: K, ...
 
 **返回值**：第一个提前终止值（非 null、非 false 且非 undefined）；如果没有，则不返回此类值。
 
-[源码](../../vendor/cordis/src/events.ts#L73)
+[源码](../../vendor/cordis/src/events.ts#L72)
 
 ### ctx.waterfall(name, ...args)
 
@@ -122,7 +122,7 @@ waterfall<K extends keyof Events>(thisArg: NoInfer<ThisType<Events[K]>>, name: K
 
 **返回值**：最外层监听器的返回值。
 
-[源码](../../vendor/cordis/src/events.ts#L86)
+[源码](../../vendor/cordis/src/events.ts#L85)
 
 ### ctx.on(name, listener, options?)
 
@@ -146,7 +146,7 @@ on<K extends keyof Events>(name: K, listener: Events[K], options?: boolean | Eve
 
 **返回值**：一个用于移除监听器的资源释放函数；如果调用该函数时监听器仍处于注册状态，则返回 `true`。
 
-[源码](../../vendor/cordis/src/events.ts#L97)
+[源码](../../vendor/cordis/src/events.ts#L96)
 
 ### ctx.once(name, listener, options?)
 
@@ -170,7 +170,7 @@ once<K extends keyof Events>(name: K, listener: Events[K], options?: boolean | E
 
 **返回值**：一个用于移除监听器的资源释放函数；如果调用该函数时监听器仍处于注册状态，则返回 `true`。
 
-[源码](../../vendor/cordis/src/events.ts#L106)
+[源码](../../vendor/cordis/src/events.ts#L105)
 
 ## EventOptions
 
@@ -186,7 +186,7 @@ interface EventOptions {
 }
 ```
 
-[源码](../../vendor/cordis/src/events.ts#L112)
+[源码](../../vendor/cordis/src/events.ts#L111)
 
 ## DispatchMode
 
@@ -206,4 +206,4 @@ interface EventOptions {
 type DispatchMode = 'emit' | 'parallel' | 'serial' | 'bail' | 'waterfall'
 ```
 
-[源码](../../vendor/cordis/src/events.ts#L32)
+[源码](../../vendor/cordis/src/events.ts#L31)
diff --git a/docs/cordis-api/fiber.i18n.yaml b/docs/cordis-api/fiber.i18n.yaml
index 042af3ba02..aeba613660 100644
--- a/docs/cordis-api/fiber.i18n.yaml
+++ b/docs/cordis-api/fiber.i18n.yaml
@@ -9,14 +9,14 @@
   en: b5b3510f4b6dd13a
   zh: a0c70471b6d779b5
 /fiber/ctx-effect-execute-label:
-  en: ef3418fd5ffbe86d
-  zh: c98935435da8bc7e
+  en: 38bab93cf931eec1
+  zh: 50fed09622da4926
 /fiber/ctx-fiber:
   en: a10e38bf26b4ecfe
   zh: 7c91817984c95c99
 /fiber/the-fiber-class:
-  en: 0e0fcb134ed44957
-  zh: 326f4232aa0e65d1
+  en: 31ca1205552db9ef
+  zh: 5fa2e5b9a7396576
 /fiber/the-fiber-class/fiber-uid:
   en: 2f0eb3658bb8497e
   zh: 65d3c17ca8bd4f95
@@ -24,50 +24,53 @@
   en: 1b527d85759324f9
   zh: 54aa40db2705b95c
 /fiber/the-fiber-class/fiber-config:
-  en: 1efe137a7ef0e599
-  zh: bb4b9818fb48f4e9
+  en: 73b05dc38761b681
+  zh: d663668f3e8fd33f
 /fiber/the-fiber-class/fiber-state:
-  en: 999ad29dfc29661b
-  zh: 20245d11c338e3f1
+  en: eda419fecddc4dc8
+  zh: 1a1b90f405cf3cbc
 /fiber/the-fiber-class/fiber-dispose:
-  en: 29e304d183eb9104
-  zh: 9ac5023f518e06c4
-/fiber/the-fiber-class/fiber-store:
-  en: c4185e5d051136a2
-  zh: 5714d9e4f5461ca3
+  en: 43f4ad79a728a492
+  zh: 71b216695d0afb22
+/fiber/the-fiber-class/fiber-committed:
+  en: 0485c9d782bf90da
+  zh: 74304cd05e9c0796
+/fiber/the-fiber-class/fiber-provisions:
+  en: 1cf8235d0ca54124
+  zh: 3d2e39064853165f
 /fiber/the-fiber-class/fiber-inertia:
   en: 2a3b1d3bc37bf986
   zh: 83bd257ee685d38b
 /fiber/the-fiber-class/fiber-name:
-  en: e5c2ecca13167a32
-  zh: 284a461f0f1cd35b
+  en: cdc0677ce1d83361
+  zh: a58305521a0626de
 /fiber/the-fiber-class/fiber-assertactive:
-  en: cceb503899634d09
-  zh: a8381af1a23436f3
+  en: 0c3e8008ff2d69e2
+  zh: 7b454626d3e3a3b6
 /fiber/the-fiber-class/fiber-effect-execute-label:
-  en: 55dcfacf295bbcf2
-  zh: 6e3ec27bb8da5a3d
+  en: 0e905aa798ce3830
+  zh: bbd0b0c537097d37
 /fiber/the-fiber-class/fiber-geteffects:
-  en: 4d739a9c186fd9c2
-  zh: f80fd3b87e79b004
+  en: 729a1000bda8ee36
+  zh: 5bfc19df3addab80
 /fiber/the-fiber-class/fiber-rawconfig:
-  en: 898aab51825bd8c3
-  zh: b9ab6339574002df
+  en: 80d4007e42bd8b47
+  zh: 14c11dc09c6402ce
 /fiber/the-fiber-class/fiber-effectiveconfig:
-  en: 93ac680251e7023f
-  zh: 8ea7d7de5db39b8e
+  en: 8e9fcdcf458c8bde
+  zh: 36d21cafbf4f0198
 /fiber/the-fiber-class/fiber-resolveconfig-config:
-  en: d7319852e2a1c3a9
-  zh: 3300fac049227006
+  en: f8a9ca27b288bd4c
+  zh: 03ce360b5200fbdb
 /fiber/the-fiber-class/fiber-await:
-  en: c9a6544cacdbc28e
-  zh: 636bf93efad95bc9
+  en: 3f228c1861466386
+  zh: 43b3f3acfc3d314b
 /fiber/the-fiber-class/fiber-restart:
-  en: 6ffc1baba98d689f
-  zh: 7e13bc92225c7e0a
+  en: 152116f669f52e95
+  zh: 11d3cd941ce32d88
 /fiber/the-fiber-class/fiber-update-config-nosave:
-  en: 5c176a6e67073e92
-  zh: ee07edc8dbf7c1f3
+  en: a4f711258eb70e47
+  zh: fff4d880d820de10
 /fiber/effect:
   en: 007d5b214e8a8610
   zh: d74c26fbb1b8aeb6
diff --git a/docs/cordis-api/fiber.md b/docs/cordis-api/fiber.md
index e85cc7b3e6..3bfc3a00e9 100644
--- a/docs/cordis-api/fiber.md
+++ b/docs/cordis-api/fiber.md
@@ -34,7 +34,7 @@ Register a cleanup-aware effect on this fiber.
 
 **Returns** a disposer that tears the effect down and settles once done.
 
-[Source](../../vendor/cordis/src/fiber.ts#L415)
+[Source](../../vendor/cordis/src/fiber.ts#L421)
 
 ### ctx.fiber
 
@@ -51,7 +51,7 @@ The fiber (plugin runtime instance) that owns this context.
 
 Runtime instance of one plugin application.
 
-A fiber tracks dependency state, validated config, lifecycle effects, and cleanup for the plugin context returned by `ctx.plugin()`.
+A fiber tracks dependency state, raw and effective config, lifecycle effects, and cleanup for the plugin context returned by `ctx.plugin()`.
 
 [Source](../../vendor/cordis/src/fiber.ts#L184)
 
@@ -80,11 +80,11 @@ The context this fiber's plugin runs in (extends the parent context).
 ### fiber.config
 
 ```ts cordis-catalog
-/** The validated plugin config (updated by `update()`); read through {@link effectiveConfig}. */
+/** Raw plugin input retained for the next activation. */
 public config: any
 ```
 
-The validated plugin config (updated by `update()`); read through effectiveConfig.
+Raw plugin input retained for the next activation.
 
 [Source](../../vendor/cordis/src/fiber.ts#L190)
 
@@ -97,7 +97,7 @@ public state
 
 Current lifecycle state; transitions emit `internal/status`.
 
-[Source](../../vendor/cordis/src/fiber.ts#L194)
+[Source](../../vendor/cordis/src/fiber.ts#L192)
 
 ### fiber.dispose
 
@@ -108,16 +108,27 @@ public readonly dispose: () => Promise<void>
 
 Dispose this fiber: unload the plugin, then settle once cleanup finished.
 
-[Source](../../vendor/cordis/src/fiber.ts#L196)
+[Source](../../vendor/cordis/src/fiber.ts#L194)
 
-### fiber.store
+### fiber.committed
 
 ```ts cordis-catalog
-/** Snapshot of required service implementations while loaded; `undefined` otherwise. */
-public store: Dict<Impl> | undefined
+/** Required implementations retained through dependent teardown. */
+public committed: Readonly<Dict<Impl>> | undefined
 ```
 
-Snapshot of required service implementations while loaded; `undefined` otherwise.
+Required implementations retained through dependent teardown.
+
+[Source](../../vendor/cordis/src/fiber.ts#L196)
+
+### fiber.provisions
+
+```ts cordis-catalog
+/** Service implementations owned by this fiber, including isolated provisions. */
+public readonly provisions: Set<Impl>
+```
+
+Service implementations owned by this fiber, including isolated provisions.
 
 [Source](../../vendor/cordis/src/fiber.ts#L198)
 
@@ -141,7 +152,7 @@ get name()
 
 The plugin's display name, inherited from the nearest named ancestor, else `'root'`.
 
-[Source](../../vendor/cordis/src/fiber.ts#L336)
+[Source](../../vendor/cordis/src/fiber.ts#L342)
 
 ### fiber.assertActive()
 
@@ -159,7 +170,7 @@ Throw if the fiber has already been disposed.
 
 **Returns** nothing when the fiber is still active.
 
-[Source](../../vendor/cordis/src/fiber.ts#L351)
+[Source](../../vendor/cordis/src/fiber.ts#L357)
 
 ### fiber.effect(execute, label?)
 
@@ -190,7 +201,7 @@ Register a cleanup-aware effect on this fiber.
 
 **Returns** a disposer that tears the effect down and settles once done.
 
-[Source](../../vendor/cordis/src/fiber.ts#L415)
+[Source](../../vendor/cordis/src/fiber.ts#L421)
 
 ### fiber.getEffects()
 
@@ -207,7 +218,7 @@ Return metadata for currently registered effects.
 
 **Returns** one `EffectMeta` tree per labeled live effect.
 
-[Source](../../vendor/cordis/src/fiber.ts#L568)
+[Source](../../vendor/cordis/src/fiber.ts#L574)
 
 ### fiber.rawConfig
 
@@ -218,21 +229,22 @@ get rawConfig(): unknown
 
 Raw input retained for the next activation, without evaluating expressions or validating it.
 
-[Source](../../vendor/cordis/src/fiber.ts#L642)
+[Source](../../vendor/cordis/src/fiber.ts#L649)
 
 ### fiber.effectiveConfig
 
 ```ts cordis-catalog
 /**
- * The config object published by the existing activation/update lifecycle, without cloning or re-parsing.
- * It is undefined before the first resolution and remains readable after unload; callers requiring a live instance check `state`.
+ * The object passed to plugin activation or the latest successful update that retained the instance.
+ * Candidate resolution does not publish it; volatile updates retain its references.
+ * Undefined before activation and readable after unload; callers requiring a live instance check `state`.
  */
 get effectiveConfig(): unknown
 ```
 
-The config object published by the existing activation/update lifecycle, without cloning or re-parsing. It is undefined before the first resolution and remains readable after unload; callers requiring a live instance check `state`.
+The object passed to plugin activation or the latest successful update that retained the instance. Candidate resolution does not publish it; volatile updates retain its references. Undefined before activation and readable after unload; callers requiring a live instance check `state`.
 
-[Source](../../vendor/cordis/src/fiber.ts#L655)
+[Source](../../vendor/cordis/src/fiber.ts#L664)
 
 ### fiber.resolveConfig(config)
 
@@ -254,7 +266,7 @@ Evaluate and validate a candidate using this fiber's `internal/config` hooks and
 
 **Returns** The candidate's resolved config, retaining the schema's result identity.
 
-[Source](../../vendor/cordis/src/fiber.ts#L667)
+[Source](../../vendor/cordis/src/fiber.ts#L676)
 
 ### fiber.await()
 
@@ -272,7 +284,7 @@ Wait for current lifecycle work and rethrow startup errors.
 
 **Returns** this fiber, once it has settled into a stable state.
 
-[Source](../../vendor/cordis/src/fiber.ts#L731)
+[Source](../../vendor/cordis/src/fiber.ts#L754)
 
 ### fiber.restart()
 
@@ -290,35 +302,29 @@ Dispose and immediately reload this plugin with its current config.
 
 **Returns** a promise resolving once the reload settled.
 
-[Source](../../vendor/cordis/src/fiber.ts#L745)
+[Source](../../vendor/cordis/src/fiber.ts#L768)
 
 ### fiber.update(config, noSave?)
 
 ```ts cordis-catalog
 /**
- * Validate and apply new config, then restart the plugin.
- *
- * Runs the `internal/update` waterfall first, so update hooks (and HMR)
- * can veto or replace the restart.
- *
- * @param config — the new raw config; validated before anything restarts.
- * @param noSave — hint for persistence hooks not to write the change back.
- * @returns nothing; the restart runs behind the `internal/update` waterfall.
- * @throws {ValidationError} when the new config fails validation.
+ * Resolve a candidate, retain its raw config and apply it through the update waterfall.
+ * @param config Raw config; pending fibers defer resolution until activation.
+ * @param noSave Suppress the persistence notification when true.
+ * @returns The awaited update/restart result, or undefined when a synchronous listener handles it.
+ * @throws {ValidationError} when an active fiber's candidate is invalid.
  */
-update(config: any, noSave = false)
+update(config: any, noSave = false): Awaitable<void>
 ```
 
-Validate and apply new config, then restart the plugin.
+Resolve a candidate, retain its raw config and apply it through the update waterfall.
 
-Runs the `internal/update` waterfall first, so update hooks (and HMR) can veto or replace the restart.
+- `config` — Raw config; pending fibers defer resolution until activation.
+- `noSave` — Suppress the persistence notification when true.
 
-- `config` — the new raw config; validated before anything restarts.
-- `noSave` — hint for persistence hooks not to write the change back.
+**Returns** The awaited update/restart result, or undefined when a synchronous listener handles it.
 
-**Returns** nothing; the restart runs behind the `internal/update` waterfall.
-
-[Source](../../vendor/cordis/src/fiber.ts#L764)
+[Source](../../vendor/cordis/src/fiber.ts#L783)
 
 ## Effect
 
diff --git a/docs/cordis-api/fiber.zh.md b/docs/cordis-api/fiber.zh.md
index d529013e73..88d253452d 100644
--- a/docs/cordis-api/fiber.zh.md
+++ b/docs/cordis-api/fiber.zh.md
@@ -36,7 +36,7 @@ effect(execute: () => Effect, label?: string): AsyncDisposable<Promise<void>>
 
 **返回**一个用于撤销该作用的清理函数，并在清理完成后结算。
 
-[源码](../../vendor/cordis/src/fiber.ts#L415)
+[源码](../../vendor/cordis/src/fiber.ts#L421)
 
 ### ctx.fiber
 
@@ -53,7 +53,7 @@ fiber: Fiber
 
 单次插件应用的运行时实例。
 
-fiber 会跟踪 `ctx.plugin()` 返回的插件上下文所对应的依赖状态、经过校验的配置、生命周期作用和清理操作。
+fiber 会跟踪 `ctx.plugin()` 返回的插件上下文所对应的依赖状态、原始配置与有效配置、生命周期作用和清理操作。
 
 [源码](../../vendor/cordis/src/fiber.ts#L184)
 
@@ -82,11 +82,11 @@ public readonly ctx: Context
 ### fiber.config
 
 ```ts cordis-catalog
-/** The validated plugin config (updated by `update()`); read through {@link effectiveConfig}. */
+/** Raw plugin input retained for the next activation. */
 public config: any
 ```
 
-经过校验的插件配置（由 `update()` 更新）；通过 `effectiveConfig` 读取。
+为下次激活保留的原始插件输入。
 
 [源码](../../vendor/cordis/src/fiber.ts#L190)
 
@@ -99,7 +99,7 @@ public state
 
 当前生命周期状态；状态转换会发出 `internal/status`。
 
-[源码](../../vendor/cordis/src/fiber.ts#L194)
+[源码](../../vendor/cordis/src/fiber.ts#L192)
 
 ### fiber.dispose
 
@@ -110,16 +110,27 @@ public readonly dispose: () => Promise<void>
 
 dispose 此 fiber：卸载插件，并在清理完成后结算。
 
-[源码](../../vendor/cordis/src/fiber.ts#L196)
+[源码](../../vendor/cordis/src/fiber.ts#L194)
 
-### fiber.store
+### fiber.committed
 
 ```ts cordis-catalog
-/** Snapshot of required service implementations while loaded; `undefined` otherwise. */
-public store: Dict<Impl> | undefined
+/** Required implementations retained through dependent teardown. */
+public committed: Readonly<Dict<Impl>> | undefined
 ```
 
-加载期间所需服务实现的快照；其他情况下为 `undefined`。
+在依赖方清理完成前保留的所需服务实现。
+
+[源码](../../vendor/cordis/src/fiber.ts#L196)
+
+### fiber.provisions
+
+```ts cordis-catalog
+/** Service implementations owned by this fiber, including isolated provisions. */
+public readonly provisions: Set<Impl>
+```
+
+此 fiber 拥有的服务实现，包括隔离域中的服务。
 
 [源码](../../vendor/cordis/src/fiber.ts#L198)
 
@@ -143,7 +154,7 @@ get name()
 
 插件的显示名称，继承自最近的具名祖先；如果不存在，则为 `'root'`。
 
-[源码](../../vendor/cordis/src/fiber.ts#L336)
+[源码](../../vendor/cordis/src/fiber.ts#L342)
 
 ### fiber.assertActive()
 
@@ -161,7 +172,7 @@ assertActive()
 
 **返回**：fiber 仍处于活动状态时不返回任何内容。
 
-[源码](../../vendor/cordis/src/fiber.ts#L351)
+[源码](../../vendor/cordis/src/fiber.ts#L357)
 
 ### fiber.effect(execute, label?)
 
@@ -192,7 +203,7 @@ effect(execute: () => Effect, label?: string): AsyncDisposable<Promise<void>>
 
 **返回**一个用于撤销该作用的清理函数，并在清理完成后结算。
 
-[源码](../../vendor/cordis/src/fiber.ts#L415)
+[源码](../../vendor/cordis/src/fiber.ts#L421)
 
 ### fiber.getEffects()
 
@@ -209,7 +220,7 @@ getEffects()
 
 **返回**：每个带标签的活动作用对应一棵 `EffectMeta` 树。
 
-[源码](../../vendor/cordis/src/fiber.ts#L568)
+[源码](../../vendor/cordis/src/fiber.ts#L574)
 
 ### fiber.rawConfig
 
@@ -218,23 +229,25 @@ getEffects()
 get rawConfig(): unknown
 ```
 
+
 保留供下次激活使用的原始输入，不执行表达式求值或验证。
 
-[源码](../../vendor/cordis/src/fiber.ts#L642)
+[源码](../../vendor/cordis/src/fiber.ts#L649)
 
 ### fiber.effectiveConfig
 
 ```ts cordis-catalog
 /**
- * The config object published by the existing activation/update lifecycle, without cloning or re-parsing.
- * It is undefined before the first resolution and remains readable after unload; callers requiring a live instance check `state`.
+ * The object passed to plugin activation or the latest successful update that retained the instance.
+ * Candidate resolution does not publish it; volatile updates retain its references.
+ * Undefined before activation and readable after unload; callers requiring a live instance check `state`.
  */
 get effectiveConfig(): unknown
 ```
 
-既有激活／更新生命周期发布的配置对象，不克隆或重新解析。首次解析前为 undefined，卸载后仍可读取；需要运行实例的调用方应检查 `state`。
+传给插件激活过程或最近一次成功保留实例的更新的对象。候选配置求值不发布结果；volatile 更新保留其中的引用。激活前为 undefined，卸载后仍可读取；需要运行中实例的调用方还应检查 `state`。
 
-[源码](../../vendor/cordis/src/fiber.ts#L655)
+[源码](../../vendor/cordis/src/fiber.ts#L664)
 
 ### fiber.resolveConfig(config)
 
@@ -250,13 +263,14 @@ get effectiveConfig(): unknown
 resolveConfig(config: unknown): unknown
 ```
 
+
 通过此 fiber 的 `internal/config` 钩子和运行时 schema 对候选值求值并验证。此操作不发布结果、不替换原始输入，也不提交运行中的 volatile 引用。钩子访问的注入服务必须已经可用。
 
 - `config`：原始候选输入。
 
 **返回**候选配置的解析结果，保留 schema 返回对象的身份。
 
-[源码](../../vendor/cordis/src/fiber.ts#L667)
+[源码](../../vendor/cordis/src/fiber.ts#L676)
 
 ### fiber.await()
 
@@ -274,7 +288,7 @@ async await()
 
 **返回**：进入稳定状态后的此 fiber。
 
-[源码](../../vendor/cordis/src/fiber.ts#L731)
+[源码](../../vendor/cordis/src/fiber.ts#L754)
 
 ### fiber.restart()
 
@@ -292,35 +306,29 @@ dispose 此插件，并立即使用其当前配置重新加载。
 
 **返回**一个在重新加载完成后兑现的 promise。
 
-[源码](../../vendor/cordis/src/fiber.ts#L745)
+[源码](../../vendor/cordis/src/fiber.ts#L768)
 
 ### fiber.update(config, noSave?)
 
 ```ts cordis-catalog
 /**
- * Validate and apply new config, then restart the plugin.
- *
- * Runs the `internal/update` waterfall first, so update hooks (and HMR)
- * can veto or replace the restart.
- *
- * @param config — the new raw config; validated before anything restarts.
- * @param noSave — hint for persistence hooks not to write the change back.
- * @returns nothing; the restart runs behind the `internal/update` waterfall.
- * @throws {ValidationError} when the new config fails validation.
+ * Resolve a candidate, retain its raw config and apply it through the update waterfall.
+ * @param config Raw config; pending fibers defer resolution until activation.
+ * @param noSave Suppress the persistence notification when true.
+ * @returns The awaited update/restart result, or undefined when a synchronous listener handles it.
+ * @throws {ValidationError} when an active fiber's candidate is invalid.
  */
-update(config: any, noSave = false)
+update(config: any, noSave = false): Awaitable<void>
 ```
 
-校验并应用新配置，然后重新启动插件。
+求值候选配置，保留原始输入，并通过更新 waterfall 应用结果。
 
-首先运行 `internal/update` waterfall（瀑布式事件），因此更新钩子（以及 HMR（热模块替换））可以否决或取代重新启动操作。
+- `config` — 原始配置；pending fiber 将求值推迟到激活时。
+- `noSave` — 为 true 时不发出持久化通知。
 
-- `config`：新的原始配置；在任何内容重新启动前进行校验。
-- `noSave`：提示持久化钩子不要写回此变更。
+**返回** 可等待的更新或重启结果；同步监听器处理更新时为 undefined。
 
-**返回**无返回值；重启由 `internal/update` waterfall 执行。
-
-[源码](../../vendor/cordis/src/fiber.ts#L764)
+[源码](../../vendor/cordis/src/fiber.ts#L783)
 
 ## Effect
 
diff --git a/docs/cordis-api/inherited.md b/docs/cordis-api/inherited.md
index cc62683cb5..c414eaedd5 100644
--- a/docs/cordis-api/inherited.md
+++ b/docs/cordis-api/inherited.md
@@ -21,15 +21,16 @@ This file is GENERATED from source (`scripts/gen-cordis-catalog.ts`) and verifie
 
 ## Inherited events (cordis core + loader/hmr/timer)
 
-- `internal/plugin` — A plugin fiber was created. ([`vendor/cordis/src/events.ts:331`](../../vendor/cordis/src/events.ts))
-- `internal/status` — A fiber changed lifecycle state. ([`vendor/cordis/src/events.ts:333`](../../vendor/cordis/src/events.ts))
-- `internal/service` — Interception hook for a service binding (no core producer). ([`vendor/cordis/src/events.ts:341`](../../vendor/cordis/src/events.ts))
-- `internal/update` — Waterfall: a fiber config update is being applied. ([`vendor/cordis/src/events.ts:343`](../../vendor/cordis/src/events.ts))
-- `internal/config` — Waterfall: a fiber config is being resolved before validation. ([`vendor/cordis/src/events.ts:339`](../../vendor/cordis/src/events.ts))
-- `internal/get` — Waterfall: a service is being read from the store. ([`vendor/cordis/src/events.ts:345`](../../vendor/cordis/src/events.ts))
-- `internal/set` — Waterfall: a service is being written to the store. ([`vendor/cordis/src/events.ts:347`](../../vendor/cordis/src/events.ts))
-- `internal/listener` — A listener was registered. ([`vendor/cordis/src/events.ts:349`](../../vendor/cordis/src/events.ts))
-- `internal/dispatch` — An event is being dispatched to listeners. ([`vendor/cordis/src/events.ts:351`](../../vendor/cordis/src/events.ts))
+- `internal/plugin` — A plugin fiber was created. ([`vendor/cordis/src/events.ts:337`](../../vendor/cordis/src/events.ts))
+- `internal/status` — A fiber changed lifecycle state. ([`vendor/cordis/src/events.ts:339`](../../vendor/cordis/src/events.ts))
+- `internal/service` — A service binding was refreshed in the matching isolation scope. ([`vendor/cordis/src/events.ts:341`](../../vendor/cordis/src/events.ts))
+- `internal/update` — Waterfall: apply resolved config; omitting next() keeps the current instance. ([`vendor/cordis/src/events.ts:348`](../../vendor/cordis/src/events.ts))
+- `internal/commit` — Persist raw config from a programmatic update unless noSave is set. ([`vendor/cordis/src/events.ts:355`](../../vendor/cordis/src/events.ts))
+- `internal/config` — Waterfall: resolve a candidate after injections are active without publishing it. ([`vendor/cordis/src/events.ts:362`](../../vendor/cordis/src/events.ts))
+- `internal/get` — Waterfall: a service is being read from the store. ([`vendor/cordis/src/events.ts:364`](../../vendor/cordis/src/events.ts))
+- `internal/set` — Waterfall: a service is being written to the store. ([`vendor/cordis/src/events.ts:366`](../../vendor/cordis/src/events.ts))
+- `internal/listener` — A listener was registered. ([`vendor/cordis/src/events.ts:368`](../../vendor/cordis/src/events.ts))
+- `internal/dispatch` — An event is being dispatched to listeners. ([`vendor/cordis/src/events.ts:370`](../../vendor/cordis/src/events.ts))
 - `exit` — The process is exiting on a signal. ([`vendor/loader/src/index.ts:25`](../../vendor/loader/src/index.ts))
 - `loader/config-update` — The loader config tree changed. ([`vendor/loader/src/index.ts:26`](../../vendor/loader/src/index.ts))
 - `loader/entry-init` — A config entry is being initialized. ([`vendor/loader/src/index.ts:27`](../../vendor/loader/src/index.ts))
diff --git a/docs/deepseek-llm-api-wire-extensions.i18n.yaml b/docs/deepseek-llm-api-wire-extensions.i18n.yaml
index 79b48d6dc5..c5248fa3f7 100644
--- a/docs/deepseek-llm-api-wire-extensions.i18n.yaml
+++ b/docs/deepseek-llm-api-wire-extensions.i18n.yaml
@@ -9,8 +9,8 @@
   en: 1da81051addc4b47
   zh: 3e8d7cd3f8c1cdba
 /official-deepseek-llm-api-wire-extensions/request-headers:
-  en: 740e92e903ecb594
-  zh: f934d3c9e5c56bfe
+  en: d3d6a2c8240b80e9
+  zh: debf42ed01233728
 /official-deepseek-llm-api-wire-extensions/body-extension-transaction:
   en: 48001cfd1281a23b
   zh: d410530ae8aa2823
@@ -18,8 +18,8 @@
   en: f89059050613f3e8
   zh: da5cf2a4eeb81b75
 /official-deepseek-llm-api-wire-extensions/dsh-session-log:
-  en: de1a3f2c377d74e3
-  zh: 7c803345f71117c5
+  en: 0d033f72951e2920
+  zh: 767efca0dc39ac03
 /official-deepseek-llm-api-wire-extensions/dsh-session-log/wire-session-header:
   en: ccd8fcd773df21c4
   zh: 7ea020068ad093ae
diff --git a/docs/deepseek-llm-api-wire-extensions.md b/docs/deepseek-llm-api-wire-extensions.md
index 1a30f7c463..e9a270d98e 100644
--- a/docs/deepseek-llm-api-wire-extensions.md
+++ b/docs/deepseek-llm-api-wire-extensions.md
@@ -28,7 +28,7 @@ The [`DeepSeekLlmApiExtensionRegistry`](../packages/llm/deepseek-llm-api-extensi
 | `x-deepseek-harness-session-id` | Model requests carrying a Session id | The exact request `sessionId` string |
 | `x-deepseek-harness-compact` | Model requests whose purpose is `compaction` | The literal string `1` |
 
-Credential failure happens before anonymous-user-id resolution, so an unauthorized request neither sends these headers nor creates the identity file. A direct request without a Session omits `x-deepseek-harness-session-id`. Session-title requests have no additional purpose header; the ordinary Session-id rule still applies when one carries a `sessionId`.
+Credential failure happens before anonymous-user-id resolution, so an unauthorized request neither sends these headers nor creates the identity file. A direct request without a Session omits `x-deepseek-harness-session-id`. Session-title and Auto review requests have no additional purpose header; the ordinary Session-id rule still applies when one carries a `sessionId`.
 
 ## Body-extension transaction
 
@@ -73,7 +73,7 @@ An enabled inventory with no qualifying entries sends `packages: []`; disabling
 
 ## `dsh_session_log`
 
-[`@deepseek-ai/dsh-session-log-deepseek`](../packages/session/session-log-deepseek/README.md) contributes one contiguous suffix of the canonical Session log. The field is enabled by default. It applies to a request with a live Session and at least one event; a direct request, a stale Session id, or an empty log omits the field, as does a request whose first pending event alone exceeds `maxBytes` or cannot be serialized; a composition disables it with `enabled: false`. The examples below use logical Session format 2 only to illustrate the wire fields; they do not identify the [current writer format](session-format-status.md).
+[`@deepseek-ai/dsh-session-log-deepseek`](../packages/session/session-log-deepseek/README.md) contributes one contiguous suffix of the canonical Session log. The field is enabled by default. It applies to a request with a live Session and at least one event; a direct request, a stale Session id, an empty log, or a request matched by a registered upload exclusion omits the field, as does a request whose first pending event alone exceeds `maxBytes` or cannot be serialized; a composition disables it with `enabled: false`. The examples below use logical Session format 2 only to illustrate the wire fields; they do not identify the [current writer format](session-format-status.md).
 
 ```json
 {
diff --git a/docs/deepseek-llm-api-wire-extensions.zh.md b/docs/deepseek-llm-api-wire-extensions.zh.md
index dcccecc6a7..d498e8f951 100644
--- a/docs/deepseek-llm-api-wire-extensions.zh.md
+++ b/docs/deepseek-llm-api-wire-extensions.zh.md
@@ -28,7 +28,7 @@
 | `x-deepseek-harness-session-id` | 携带会话 id 的模型请求 | 确切的请求 `sessionId` 字符串 |
 | `x-deepseek-harness-compact` | 用途为 `compaction` 的模型请求 | 字面字符串 `1` |
 
-凭据失败发生在解析匿名用户 id 之前，因此未授权请求既不会发送这些标头，也不会创建身份文件。没有会话的直接请求会省略 `x-deepseek-harness-session-id`。会话标题请求没有额外的用途标头；请求携带 `sessionId` 时，仍然适用普通的会话 id 规则。
+凭据失败发生在解析匿名用户 id 之前，因此未授权请求既不会发送这些标头，也不会创建身份文件。没有会话的直接请求会省略 `x-deepseek-harness-session-id`。会话标题请求和 Auto 审查请求没有额外的用途标头；请求携带 `sessionId` 时，仍然适用普通的会话 id 规则。
 
 ## 正文扩展事务
 
@@ -73,7 +73,7 @@
 
 ## `dsh_session_log`
 
-[`@deepseek-ai/dsh-session-log-deepseek`](../packages/session/session-log-deepseek/README.zh.md) 贡献权威会话日志的一段连续后缀。该字段默认启用。它适用于携带存活会话且至少存在一个事件的请求；直接请求、陈旧会话 id 或空日志会省略该字段，第一条待发事件本身超过 `maxBytes` 或无法序列化的请求也会省略该字段；组合可用 `enabled: false` 禁用它。下方示例使用逻辑 Session 格式 2 仅为说明协议字段，并不标识[当前写入格式](session-format-status.zh.md)。
+[`@deepseek-ai/dsh-session-log-deepseek`](../packages/session/session-log-deepseek/README.zh.md) 贡献权威会话日志的一段连续后缀。该字段默认启用。它适用于携带存活会话且至少存在一个事件的请求；直接请求、陈旧会话 id、空日志或命中已注册上传排除条件的请求会省略该字段，第一条待发事件本身超过 `maxBytes` 或无法序列化的请求也会省略该字段；组合可用 `enabled: false` 禁用它。下方示例使用逻辑 Session 格式 2 仅为说明协议字段，并不标识[当前写入格式](session-format-status.zh.md)。
 
 ```json
 {
diff --git a/docs/development.i18n.yaml b/docs/development.i18n.yaml
index 999b732bc7..406a86b628 100644
--- a/docs/development.i18n.yaml
+++ b/docs/development.i18n.yaml
@@ -21,8 +21,8 @@
   en: 3221d1076554001f
   zh: 29f166be6a5c04d9
 /development-guide/contributor-reference/typescript-project-layout:
-  en: 12810e1c6ca8b8e4
-  zh: b505d34cdf27856d
+  en: eb79b6f8ea745a9f
+  zh: de676c78231c823a
 /development-guide/contributor-reference/environment-variables:
   en: dba2c72ee6ffa930
   zh: b65c27fbb9129ec8
diff --git a/docs/development.md b/docs/development.md
index 76e34201cb..406b6c1a7d 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -66,7 +66,7 @@ The repository uses isolated Host and Client aggregates. An ordinary package is
 | `tsconfig.base.json` | Shared compilerOptions and the source `paths` map. Also the resolution facade the vitest configs point vite-tsconfig-paths at: it has no `include`, so its `paths` apply to every importer. | No |
 | `tsconfig.base.client.json` | Browser compiler settings (`jsx`, DOM libs, `types: []`) extended by the Client aggregate and every `packages/client/*` package. | No |
 
-Host aggregate type checks run with a 8 GiB Node old-space limit across build, release, and Windows diagnostic commands. This is a per-compiler limit; concurrent build steps need additional memory.
+Host and Client aggregate type checks run with an 8 GiB Node old-space limit. This is a per-compiler limit; concurrent build steps need additional memory. `pnpm run build:official --serial` prevents build steps from overlapping, even with `DSH_GATE_CONCURRENCY` set; the DSH publication workflow uses this option.
 
 Host and Client stay two aggregate programs because both sides declaration-merge the cordis `Context` interface under the same keys with different services; one program seeing both merges reports a collision. The collision exists only inside a `ts.Program` — module resolution never triggers it — which is why the solution may reference both aggregates and one paths facade may span both sides. Three disciplines follow:
 
diff --git a/docs/development.zh.md b/docs/development.zh.md
index ac61221c52..8dcedc8938 100644
--- a/docs/development.zh.md
+++ b/docs/development.zh.md
@@ -70,7 +70,7 @@ pnpm run typecheck
 | `tsconfig.base.json` | 共享 compilerOptions 与源码 `paths` 映射。同时是各 vitest 配置让 vite-tsconfig-paths 指向的解析门面：它没有 `include`，因此其 `paths` 适用于任何 importer。 | 否 |
 | `tsconfig.base.client.json` | 浏览器编译设置（`jsx`、DOM lib、`types: []`），由 Client aggregate 和每个 `packages/client/*` 包 extends。 | 否 |
 
-构建、发布和 Windows 诊断命令中的 Host aggregate 类型检查为 Node 老生代堆设置 8 GiB 上限。这是单个编译进程的上限；并发构建步骤还需要额外内存。
+Host 和 Client aggregate 类型检查为 Node 老生代堆设置 8 GiB 上限。这是单个编译进程的上限；并发构建步骤还需要额外内存。`pnpm run build:official --serial` 阻止构建步骤重叠，即使设置了 `DSH_GATE_CONCURRENCY` 也不例外；DSH 发布 workflow 使用此选项。
 
 Host 与 Client 保持两个 aggregate program，是因为两侧在相同键下以不同服务对 cordis `Context` 接口做声明合并；单一 program 同时看到两份合并会报冲突。这种冲突只存在于 `ts.Program` 内部——模块解析永远不会触发它——所以 solution 可以同时引用两个 aggregate，一个 paths 门面也可以横跨两侧。由此推出三条纪律：
 
diff --git a/docs/event-producer-consumer.md b/docs/event-producer-consumer.md
index 54c5b0c4b6..f0ba4a3687 100644
--- a/docs/event-producer-consumer.md
+++ b/docs/event-producer-consumer.md
@@ -13,13 +13,13 @@ Application listeners are outside this package matrix. Desktop Host subscribes t
 | `agent-loop/config-start-failed` | `emit` | [`packages/core/agent-loop/src/index.ts:199`](../packages/core/agent-loop/src/index.ts) | [`agent-loop`](../packages/core/agent-loop) (`events.dispatch`) | - |
 | `agent-preset/selected` | `emit` | [`packages/preset/agent-preset-registry/src/types.ts:66`](../packages/preset/agent-preset-registry/src/types.ts) | [`agent-preset-registry`](../packages/preset/agent-preset-registry) (`emit`) | [`cua`](../packages/experimental/cua), `remotes` |
 | `agent/assistant-stream` | `emit` | [`packages/core/agent/src/runtime-types.ts:399`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`headless`](../packages/bundle/headless), `session-controller` |
-| `agent/created` | `serial` | [`packages/core/agent/src/runtime-types.ts:290`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`serial`) | `agent-team`, `browser-use-runtime`, `claude-code-mods`, [`creation-recommendations`](../packages/experimental/creation-recommendations), [`cua`](../packages/experimental/cua), [`file-reference-local`](../packages/context/file-reference-local), [`goal`](../packages/goal/goal), [`goal-round-driver`](../packages/goal/goal-round-driver), [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), [`loader-smoke`](../packages/test-support/loader-smoke), [`permission-presets`](../packages/interaction/permission-presets), `session-controller`, `tool-agent-team`, [`tool-subagent`](../packages/subagent/tool-subagent) |
+| `agent/created` | `serial` | [`packages/core/agent/src/runtime-types.ts:290`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`serial`) | `agent-team`, `browser-use-runtime`, `claude-code-mods`, [`creation-recommendations`](../packages/experimental/creation-recommendations), [`cua`](../packages/experimental/cua), [`file-reference-local`](../packages/context/file-reference-local), [`goal`](../packages/goal/goal), [`goal-round-driver`](../packages/goal/goal-round-driver), [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), `liveshare`, [`loader-smoke`](../packages/test-support/loader-smoke), [`permission-presets`](../packages/interaction/permission-presets), `session-controller`, `tool-agent-team`, [`tool-subagent`](../packages/subagent/tool-subagent) |
 | `agent/disposed` | `emit` | [`packages/core/agent/src/runtime-types.ts:299`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`action-cards`](../packages/experimental/action-cards), [`agent-loop`](../packages/core/agent-loop), `claude-code-mods`, [`creation-recommendations`](../packages/experimental/creation-recommendations), [`file-reference-local`](../packages/context/file-reference-local), [`goal-round-driver`](../packages/goal/goal-round-driver), `session-controller`, [`subagent`](../packages/subagent/subagent), `tool-agent-team` |
 | `agent/error` | `emit` | [`packages/core/agent/src/runtime-types.ts:429`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`acp`](../packages/acp/acp), [`deepseek-account`](../packages/credentials/deepseek-account), [`goal-round-driver`](../packages/goal/goal-round-driver), [`headless`](../packages/bundle/headless), `server`, `session-controller`, [`session-telemetry`](../packages/session/session-telemetry), [`subagent`](../packages/subagent/subagent) |
 | `agent/inbox/claimed` | `emit` | [`packages/core/agent/src/runtime-types.ts:328`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`acp`](../packages/acp/acp), [`goal-round-driver`](../packages/goal/goal-round-driver), [`subagent`](../packages/subagent/subagent), [`tool-jobs`](../packages/jobs/tool-jobs), [`user-questions`](../packages/interaction/user-questions) |
 | `agent/inbox/discarded` | `emit` | [`packages/core/agent/src/runtime-types.ts:336`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`goal-round-driver`](../packages/goal/goal-round-driver), [`subagent`](../packages/subagent/subagent), [`user-questions`](../packages/interaction/user-questions) |
 | `agent/inbox/inserted` | `emit` | [`packages/core/agent/src/runtime-types.ts:317`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | `client-ui-forge`, [`goal-round-driver`](../packages/goal/goal-round-driver), [`subagent`](../packages/subagent/subagent), [`tool-jobs`](../packages/jobs/tool-jobs) |
-| `agent/pre-step` | `waterfall` | [`packages/core/agent/src/runtime-types.ts:350`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`action-cards`](../packages/experimental/action-cards), [`agent`](../packages/core/agent), [`agent-instructions`](../packages/context/agent-instructions), `claude-code-mods`, `client-ui-forge`, [`compaction-basic`](../packages/compaction/compaction-basic), [`goal-round-driver`](../packages/goal/goal-round-driver), [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), [`plan-mode`](../packages/plan/plan-mode), [`repeat-tool-reminder`](../packages/guard/repeat-tool-reminder), [`session-checkpoint-policy`](../packages/session/session-checkpoint-policy), `session-controller`, [`session-reference`](../packages/context/session-reference), [`time-context`](../packages/context/time-context), [`tmux-context`](../packages/context/tmux-context), [`tool-skill`](../packages/skill/tool-skill) |
+| `agent/pre-step` | `waterfall` | [`packages/core/agent/src/runtime-types.ts:350`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`action-cards`](../packages/experimental/action-cards), [`agent`](../packages/core/agent), [`agent-instructions`](../packages/context/agent-instructions), `claude-code-mods`, `client-ui-forge`, [`compaction-basic`](../packages/compaction/compaction-basic), [`goal-round-driver`](../packages/goal/goal-round-driver), [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), `liveshare`, [`plan-mode`](../packages/plan/plan-mode), [`repeat-tool-reminder`](../packages/guard/repeat-tool-reminder), [`session-checkpoint-policy`](../packages/session/session-checkpoint-policy), `session-controller`, [`session-reference`](../packages/context/session-reference), [`time-context`](../packages/context/time-context), [`tmux-context`](../packages/context/tmux-context), [`tool-skill`](../packages/skill/tool-skill) |
 | `agent/request-error` | `waterfall` | [`packages/core/agent/src/runtime-types.ts:389`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`compaction-basic`](../packages/compaction/compaction-basic), [`compaction-image-offload`](../packages/compaction/compaction-image-offload), [`llm-retry`](../packages/llm/llm-retry) |
 | `agent/status` | `emit` | [`packages/core/agent/src/runtime-types.ts:309`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`acp`](../packages/acp/acp), `agent-team`, [`compaction-basic`](../packages/compaction/compaction-basic), [`goal-round-driver`](../packages/goal/goal-round-driver), `server`, `session-controller` |
 | `agent/turn-stopping` | `serial` | [`packages/core/agent/src/runtime-types.ts:417`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), [`workspace-changes`](../packages/deliverables/workspace-changes) |
@@ -48,9 +48,9 @@ Application listeners are outside this package matrix. Desktop Host subscribes t
 | `domain/changed` | `emit` | [`packages/storage/storage-domain/src/events.ts:46`](../packages/storage/storage-domain/src/events.ts) | [`storage-domain`](../packages/storage/storage-domain) (`emit`) | `workspace-controller` |
 | `feedback/committed` | `parallel` | [`packages/feedback/message-feedback/src/index.ts:58`](../packages/feedback/message-feedback/src/index.ts) | [`message-feedback`](../packages/feedback/message-feedback) (`parallel`) | [`session-telemetry-otel`](../packages/session/session-telemetry-otel) |
 | `forge/providers-changed` | `parallel` | [`packages/experimental/forge/src/index.ts:27`](../packages/experimental/forge/src/index.ts) | `forge` (`parallel`) | `forge-session` |
-| `fs/edit-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:67`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`workspace-changes`](../packages/deliverables/workspace-changes) |
-| `fs/observed` | `emit` | [`packages/fs/fs/src/index.ts:77`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`emit`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`emit`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`skill-filesystem`](../packages/skill/skill-filesystem), `workspace-files` |
-| `fs/write-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:59`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`workspace-changes`](../packages/deliverables/workspace-changes) |
+| `fs/edit-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:67`](../packages/fs/fs/src/index.ts) | `liveshare` (`waterfall`), [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`workspace-changes`](../packages/deliverables/workspace-changes) |
+| `fs/observed` | `emit` | [`packages/fs/fs/src/index.ts:77`](../packages/fs/fs/src/index.ts) | `liveshare` (`emit`), [`tool-fs`](../packages/fs/tool-fs) (`emit`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`emit`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`skill-filesystem`](../packages/skill/skill-filesystem), `workspace-files` |
+| `fs/write-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:59`](../packages/fs/fs/src/index.ts) | `liveshare` (`waterfall`), [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`workspace-changes`](../packages/deliverables/workspace-changes) |
 | `goal/activation-changed` | `emit` | [`packages/goal/goal/src/types.ts:147`](../packages/goal/goal/src/types.ts) | [`goal`](../packages/goal/goal) (`emit`) | `remotes` |
 | `goal/changed` | `emit` | [`packages/goal/goal/src/domain.ts:114`](../packages/goal/goal/src/domain.ts) | [`goal`](../packages/goal/goal) (`emit`) | [`goal-round-driver`](../packages/goal/goal-round-driver) |
 | `hmr/change` | `emit` | [`packages/boot/hmr/src/index.ts:35`](../packages/boot/hmr/src/index.ts) | [`hmr`](../packages/boot/hmr) (`emit`) | - |
@@ -59,11 +59,11 @@ Application listeners are outside this package matrix. Desktop Host subscribes t
 | `llm/models-updated` | `emit` | [`packages/llm/llm/src/types.ts:30`](../packages/llm/llm/src/types.ts) | [`llm-deepseek`](../packages/llm/llm-deepseek) (`emit`) | `remotes` |
 | `llm/stream` | `waterfall` | [`packages/llm/llm/src/index.ts:75`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`waterfall`) | [`llm-replay`](../packages/test-support/llm-replay), [`session-checkpoint-policy`](../packages/session/session-checkpoint-policy), [`session-title`](../packages/session/session-title) |
 | `permission-presets/catalog-changed` | `emit` | [`packages/interaction/permission-presets/src/types.ts:48`](../packages/interaction/permission-presets/src/types.ts) | [`permission-presets`](../packages/interaction/permission-presets) (`events.dispatch`) | `remotes` |
-| `plugin-manager/changed` | `emit` | [`packages/boot/plugin-manager/src/types.ts:427`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
-| `plugin-manager/install-log` | `emit` | [`packages/boot/plugin-manager/src/types.ts:433`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
-| `plugin-manager/install-state` | `emit` | [`packages/boot/plugin-manager/src/types.ts:440`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
-| `plugin-manager/operation` | `parallel` | [`packages/boot/plugin-manager/src/types.ts:419`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`parallel`) | - |
-| `plugin-manager/update-state` | `emit` | [`packages/boot/plugin-manager/src/types.ts:447`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
+| `plugin-manager/changed` | `emit` | [`packages/boot/plugin-manager/src/types.ts:432`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
+| `plugin-manager/install-log` | `emit` | [`packages/boot/plugin-manager/src/types.ts:438`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
+| `plugin-manager/install-state` | `emit` | [`packages/boot/plugin-manager/src/types.ts:445`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
+| `plugin-manager/operation` | `parallel` | [`packages/boot/plugin-manager/src/types.ts:424`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`parallel`) | - |
+| `plugin-manager/update-state` | `emit` | [`packages/boot/plugin-manager/src/types.ts:452`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
 | `plugin-market/changed` | `emit` | [`packages/boot/plugin-market/src/types.ts:168`](../packages/boot/plugin-market/src/types.ts) | [`plugin-market`](../packages/boot/plugin-market) (`emit`) | `remotes` |
 | `schedule/changed` | `emit` | [`packages/schedule/schedule/src/types.ts:484`](../packages/schedule/schedule/src/types.ts) | [`schedule`](../packages/schedule/schedule) (`emit`) | `remotes` |
 | `schedule/resolve-agent` | `waterfall` | [`packages/schedule/schedule/src/index.ts:74`](../packages/schedule/schedule/src/index.ts) | [`schedule`](../packages/schedule/schedule) (`waterfall`) | `server` |
@@ -83,9 +83,9 @@ Application listeners are outside this package matrix. Desktop Host subscribes t
 | `tools/change` | `emit` | [`packages/core/tools/src/events.ts:56`](../packages/core/tools/src/events.ts) | [`agent-preset-registry`](../packages/preset/agent-preset-registry) (`emit`), [`tools`](../packages/core/tools) (`emit`) | `browser-use-runtime` |
 | `tools/execute` | `waterfall` | [`packages/core/tools/src/events.ts:29`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`waterfall`) | `browser-use-runtime`, `browser-use-stagehand-native`, `claude-code-mods`, `computer-use-cua-driver-native`, [`session-checkpoint-policy`](../packages/session/session-checkpoint-policy), `timeout-policy` |
 | `tools/post-execute` | `waterfall` | [`packages/core/tools/src/events.ts:41`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`waterfall`) | `claude-code-mods`, [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), [`repeat-tool-reminder`](../packages/guard/repeat-tool-reminder), [`spill-policy`](../packages/spill/spill-policy), [`tool-fs-search`](../packages/fs/tool-fs-search) |
-| `tools/pre-execute` | `waterfall` | [`packages/core/tools/src/events.ts:18`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`waterfall`) | `auto-review`, [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), [`tool-jobs`](../packages/jobs/tool-jobs), [`workspace-changes`](../packages/deliverables/workspace-changes) |
+| `tools/pre-execute` | `waterfall` | [`packages/core/tools/src/events.ts:18`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`waterfall`) | `auto-review`, [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), `liveshare`, [`tool-jobs`](../packages/jobs/tool-jobs), [`workspace-changes`](../packages/deliverables/workspace-changes) |
 | `tools/ptc-dispatch-log` | `waterfall` | [`packages/core/tool-executor-ptc/src/runtime-types.ts:46`](../packages/core/tool-executor-ptc/src/runtime-types.ts) | [`tool-executor-ptc`](../packages/core/tool-executor-ptc) (`waterfall`) | [`spill-policy`](../packages/spill/spill-policy) |
-| `tools/result` | `emit` | [`packages/core/tools/src/events.ts:49`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`events.dispatch`) | [`action-cards`](../packages/experimental/action-cards), [`agent-instructions`](../packages/context/agent-instructions), `claude-code-mods`, `forge-session`, [`subagent`](../packages/subagent/subagent), [`tool-present`](../packages/deliverables/tool-present), `ui-trajectory` |
+| `tools/result` | `emit` | [`packages/core/tools/src/events.ts:49`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`events.dispatch`) | [`action-cards`](../packages/experimental/action-cards), [`agent-instructions`](../packages/context/agent-instructions), `claude-code-mods`, `forge-session`, `liveshare`, [`subagent`](../packages/subagent/subagent), [`tool-present`](../packages/deliverables/tool-present), `ui-trajectory` |
 | `user-questions/request` | `waterfall` | [`packages/interaction/user-questions/src/types.ts:174`](../packages/interaction/user-questions/src/types.ts) | [`user-questions`](../packages/interaction/user-questions) (`waterfall`) | `remotes`, `server` |
 | `webserver/index-inject` | `emit` | [`packages/host/webserver/src/index.ts:44`](../packages/host/webserver/src/index.ts) | `webserver` (`emit`) | `connection`, `inspector`, `modules`, `remote-access`, `shortcuts`, `ui-sidebar-documentpreview`, `ui-theme` |
 | `workflow/agent-end` | `emit` | [`packages/workflow/workflow/src/index.ts:79`](../packages/workflow/workflow/src/index.ts) | [`workflow`](../packages/workflow/workflow) (`events.dispatch`) | [`tool-workflow`](../packages/workflow/tool-workflow) |
@@ -104,14 +104,16 @@ Application listeners are outside this package matrix. Desktop Host subscribes t
 | Event string | Dispatchers | Listeners |
 | --- | --- | --- |
 | `agent/request` | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`compaction-basic`](../packages/compaction/compaction-basic) |
+| `connection/reset` | `gateway` (`emit`) | `terminal-controller`, `ui-settings` |
 | `internal/config` | - | [`llm-pi-ai`](../packages/llm/llm-pi-ai) |
 | `internal/dispatch` | - | [`terminal-bash`](../packages/terminal/terminal-bash) |
 | `internal/plugin` | - | `computer-use-cua-driver-native`, `inspector`, `loader`, [`lsp-stdio`](../packages/lsp/lsp-stdio), [`mcp-client`](../packages/mcp/mcp-client), `modules` |
 | `internal/service` | - | `client-ui-forge`, `gateway` |
-| `internal/status` | - | [`agent`](../packages/core/agent), `inspector`, `translator`, [`web`](../packages/web/web) |
-| `internal/update` | - | [`app-boot`](../packages/boot/app-boot) |
+| `internal/status` | - | [`agent`](../packages/core/agent), `claude-code-mods`, `inspector`, `translator`, [`web`](../packages/web/web) |
 | `loader/volatile-update` | - | [`llm-deepseek`](../packages/llm/llm-deepseek), [`llm-deepseek-api-key`](../packages/llm/llm-deepseek-api-key), [`llm-pi-ai`](../packages/llm/llm-pi-ai), [`plugin-market`](../packages/boot/plugin-market), `product-analytics`, `speech-to-text` |
+| `locale/change` | `locale` (`emit`) | `locale` |
 | `slots/changed` | `ui-renderer` (`emit`) | - |
+| `theme/change` | `ui-theme` (`emit`) | `ui-layout`, `ui-theme` |
 <!-- END GENERATED event-producer-consumer:undeclared -->
 
 Maintenance mode: generated: Cordis event declarations and producer/listener edges are resolved from the repository TypeScript Program.
diff --git a/docs/event-producer-consumer.zh.md b/docs/event-producer-consumer.zh.md
index ccbe7ca34a..32e57e9d06 100644
--- a/docs/event-producer-consumer.zh.md
+++ b/docs/event-producer-consumer.zh.md
@@ -15,13 +15,13 @@
 | `agent-loop/config-start-failed` | `emit` | [`packages/core/agent-loop/src/index.ts:199`](../packages/core/agent-loop/src/index.ts) | [`agent-loop`](../packages/core/agent-loop) (`events.dispatch`) | - |
 | `agent-preset/selected` | `emit` | [`packages/preset/agent-preset-registry/src/types.ts:66`](../packages/preset/agent-preset-registry/src/types.ts) | [`agent-preset-registry`](../packages/preset/agent-preset-registry) (`emit`) | [`cua`](../packages/experimental/cua), `remotes` |
 | `agent/assistant-stream` | `emit` | [`packages/core/agent/src/runtime-types.ts:399`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`headless`](../packages/bundle/headless), `session-controller` |
-| `agent/created` | `serial` | [`packages/core/agent/src/runtime-types.ts:290`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`serial`) | `agent-team`, `browser-use-runtime`, `claude-code-mods`, [`creation-recommendations`](../packages/experimental/creation-recommendations), [`cua`](../packages/experimental/cua), [`file-reference-local`](../packages/context/file-reference-local), [`goal`](../packages/goal/goal), [`goal-round-driver`](../packages/goal/goal-round-driver), [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), [`loader-smoke`](../packages/test-support/loader-smoke), [`permission-presets`](../packages/interaction/permission-presets), `session-controller`, `tool-agent-team`, [`tool-subagent`](../packages/subagent/tool-subagent) |
+| `agent/created` | `serial` | [`packages/core/agent/src/runtime-types.ts:290`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`serial`) | `agent-team`, `browser-use-runtime`, `claude-code-mods`, [`creation-recommendations`](../packages/experimental/creation-recommendations), [`cua`](../packages/experimental/cua), [`file-reference-local`](../packages/context/file-reference-local), [`goal`](../packages/goal/goal), [`goal-round-driver`](../packages/goal/goal-round-driver), [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), `liveshare`, [`loader-smoke`](../packages/test-support/loader-smoke), [`permission-presets`](../packages/interaction/permission-presets), `session-controller`, `tool-agent-team`, [`tool-subagent`](../packages/subagent/tool-subagent) |
 | `agent/disposed` | `emit` | [`packages/core/agent/src/runtime-types.ts:299`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`action-cards`](../packages/experimental/action-cards), [`agent-loop`](../packages/core/agent-loop), `claude-code-mods`, [`creation-recommendations`](../packages/experimental/creation-recommendations), [`file-reference-local`](../packages/context/file-reference-local), [`goal-round-driver`](../packages/goal/goal-round-driver), `session-controller`, [`subagent`](../packages/subagent/subagent), `tool-agent-team` |
 | `agent/error` | `emit` | [`packages/core/agent/src/runtime-types.ts:429`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`acp`](../packages/acp/acp), [`deepseek-account`](../packages/credentials/deepseek-account), [`goal-round-driver`](../packages/goal/goal-round-driver), [`headless`](../packages/bundle/headless), `server`, `session-controller`, [`session-telemetry`](../packages/session/session-telemetry), [`subagent`](../packages/subagent/subagent) |
 | `agent/inbox/claimed` | `emit` | [`packages/core/agent/src/runtime-types.ts:328`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`acp`](../packages/acp/acp), [`goal-round-driver`](../packages/goal/goal-round-driver), [`subagent`](../packages/subagent/subagent), [`tool-jobs`](../packages/jobs/tool-jobs), [`user-questions`](../packages/interaction/user-questions) |
 | `agent/inbox/discarded` | `emit` | [`packages/core/agent/src/runtime-types.ts:336`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`goal-round-driver`](../packages/goal/goal-round-driver), [`subagent`](../packages/subagent/subagent), [`user-questions`](../packages/interaction/user-questions) |
 | `agent/inbox/inserted` | `emit` | [`packages/core/agent/src/runtime-types.ts:317`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | `client-ui-forge`, [`goal-round-driver`](../packages/goal/goal-round-driver), [`subagent`](../packages/subagent/subagent), [`tool-jobs`](../packages/jobs/tool-jobs) |
-| `agent/pre-step` | `waterfall` | [`packages/core/agent/src/runtime-types.ts:350`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`action-cards`](../packages/experimental/action-cards), [`agent`](../packages/core/agent), [`agent-instructions`](../packages/context/agent-instructions), `claude-code-mods`, `client-ui-forge`, [`compaction-basic`](../packages/compaction/compaction-basic), [`goal-round-driver`](../packages/goal/goal-round-driver), [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), [`plan-mode`](../packages/plan/plan-mode), [`repeat-tool-reminder`](../packages/guard/repeat-tool-reminder), [`session-checkpoint-policy`](../packages/session/session-checkpoint-policy), `session-controller`, [`session-reference`](../packages/context/session-reference), [`time-context`](../packages/context/time-context), [`tmux-context`](../packages/context/tmux-context), [`tool-skill`](../packages/skill/tool-skill) |
+| `agent/pre-step` | `waterfall` | [`packages/core/agent/src/runtime-types.ts:350`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`action-cards`](../packages/experimental/action-cards), [`agent`](../packages/core/agent), [`agent-instructions`](../packages/context/agent-instructions), `claude-code-mods`, `client-ui-forge`, [`compaction-basic`](../packages/compaction/compaction-basic), [`goal-round-driver`](../packages/goal/goal-round-driver), [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), `liveshare`, [`plan-mode`](../packages/plan/plan-mode), [`repeat-tool-reminder`](../packages/guard/repeat-tool-reminder), [`session-checkpoint-policy`](../packages/session/session-checkpoint-policy), `session-controller`, [`session-reference`](../packages/context/session-reference), [`time-context`](../packages/context/time-context), [`tmux-context`](../packages/context/tmux-context), [`tool-skill`](../packages/skill/tool-skill) |
 | `agent/request-error` | `waterfall` | [`packages/core/agent/src/runtime-types.ts:389`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`compaction-basic`](../packages/compaction/compaction-basic), [`compaction-image-offload`](../packages/compaction/compaction-image-offload), [`llm-retry`](../packages/llm/llm-retry) |
 | `agent/status` | `emit` | [`packages/core/agent/src/runtime-types.ts:309`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`acp`](../packages/acp/acp), `agent-team`, [`compaction-basic`](../packages/compaction/compaction-basic), [`goal-round-driver`](../packages/goal/goal-round-driver), `server`, `session-controller` |
 | `agent/turn-stopping` | `serial` | [`packages/core/agent/src/runtime-types.ts:417`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), [`workspace-changes`](../packages/deliverables/workspace-changes) |
@@ -50,9 +50,9 @@
 | `domain/changed` | `emit` | [`packages/storage/storage-domain/src/events.ts:46`](../packages/storage/storage-domain/src/events.ts) | [`storage-domain`](../packages/storage/storage-domain) (`emit`) | `workspace-controller` |
 | `feedback/committed` | `parallel` | [`packages/feedback/message-feedback/src/index.ts:58`](../packages/feedback/message-feedback/src/index.ts) | [`message-feedback`](../packages/feedback/message-feedback) (`parallel`) | [`session-telemetry-otel`](../packages/session/session-telemetry-otel) |
 | `forge/providers-changed` | `parallel` | [`packages/experimental/forge/src/index.ts:27`](../packages/experimental/forge/src/index.ts) | `forge` (`parallel`) | `forge-session` |
-| `fs/edit-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:67`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`workspace-changes`](../packages/deliverables/workspace-changes) |
-| `fs/observed` | `emit` | [`packages/fs/fs/src/index.ts:77`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`emit`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`emit`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`skill-filesystem`](../packages/skill/skill-filesystem), `workspace-files` |
-| `fs/write-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:59`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`workspace-changes`](../packages/deliverables/workspace-changes) |
+| `fs/edit-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:67`](../packages/fs/fs/src/index.ts) | `liveshare` (`waterfall`), [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`workspace-changes`](../packages/deliverables/workspace-changes) |
+| `fs/observed` | `emit` | [`packages/fs/fs/src/index.ts:77`](../packages/fs/fs/src/index.ts) | `liveshare` (`emit`), [`tool-fs`](../packages/fs/tool-fs) (`emit`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`emit`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`skill-filesystem`](../packages/skill/skill-filesystem), `workspace-files` |
+| `fs/write-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:59`](../packages/fs/fs/src/index.ts) | `liveshare` (`waterfall`), [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy), [`workspace-changes`](../packages/deliverables/workspace-changes) |
 | `goal/activation-changed` | `emit` | [`packages/goal/goal/src/types.ts:147`](../packages/goal/goal/src/types.ts) | [`goal`](../packages/goal/goal) (`emit`) | `remotes` |
 | `goal/changed` | `emit` | [`packages/goal/goal/src/domain.ts:114`](../packages/goal/goal/src/domain.ts) | [`goal`](../packages/goal/goal) (`emit`) | [`goal-round-driver`](../packages/goal/goal-round-driver) |
 | `hmr/change` | `emit` | [`packages/boot/hmr/src/index.ts:35`](../packages/boot/hmr/src/index.ts) | [`hmr`](../packages/boot/hmr) (`emit`) | - |
@@ -61,11 +61,11 @@
 | `llm/models-updated` | `emit` | [`packages/llm/llm/src/types.ts:30`](../packages/llm/llm/src/types.ts) | [`llm-deepseek`](../packages/llm/llm-deepseek) (`emit`) | `remotes` |
 | `llm/stream` | `waterfall` | [`packages/llm/llm/src/index.ts:75`](../packages/llm/llm/src/index.ts) | [`llm`](../packages/llm/llm) (`waterfall`) | [`llm-replay`](../packages/test-support/llm-replay), [`session-checkpoint-policy`](../packages/session/session-checkpoint-policy), [`session-title`](../packages/session/session-title) |
 | `permission-presets/catalog-changed` | `emit` | [`packages/interaction/permission-presets/src/types.ts:48`](../packages/interaction/permission-presets/src/types.ts) | [`permission-presets`](../packages/interaction/permission-presets) (`events.dispatch`) | `remotes` |
-| `plugin-manager/changed` | `emit` | [`packages/boot/plugin-manager/src/types.ts:427`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
-| `plugin-manager/install-log` | `emit` | [`packages/boot/plugin-manager/src/types.ts:433`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
-| `plugin-manager/install-state` | `emit` | [`packages/boot/plugin-manager/src/types.ts:440`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
-| `plugin-manager/operation` | `parallel` | [`packages/boot/plugin-manager/src/types.ts:419`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`parallel`) | - |
-| `plugin-manager/update-state` | `emit` | [`packages/boot/plugin-manager/src/types.ts:447`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
+| `plugin-manager/changed` | `emit` | [`packages/boot/plugin-manager/src/types.ts:432`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
+| `plugin-manager/install-log` | `emit` | [`packages/boot/plugin-manager/src/types.ts:438`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
+| `plugin-manager/install-state` | `emit` | [`packages/boot/plugin-manager/src/types.ts:445`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
+| `plugin-manager/operation` | `parallel` | [`packages/boot/plugin-manager/src/types.ts:424`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`parallel`) | - |
+| `plugin-manager/update-state` | `emit` | [`packages/boot/plugin-manager/src/types.ts:452`](../packages/boot/plugin-manager/src/types.ts) | [`plugin-manager`](../packages/boot/plugin-manager) (`emit`) | `remotes` |
 | `plugin-market/changed` | `emit` | [`packages/boot/plugin-market/src/types.ts:168`](../packages/boot/plugin-market/src/types.ts) | [`plugin-market`](../packages/boot/plugin-market) (`emit`) | `remotes` |
 | `schedule/changed` | `emit` | [`packages/schedule/schedule/src/types.ts:484`](../packages/schedule/schedule/src/types.ts) | [`schedule`](../packages/schedule/schedule) (`emit`) | `remotes` |
 | `schedule/resolve-agent` | `waterfall` | [`packages/schedule/schedule/src/index.ts:74`](../packages/schedule/schedule/src/index.ts) | [`schedule`](../packages/schedule/schedule) (`waterfall`) | `server` |
@@ -85,9 +85,9 @@
 | `tools/change` | `emit` | [`packages/core/tools/src/events.ts:56`](../packages/core/tools/src/events.ts) | [`agent-preset-registry`](../packages/preset/agent-preset-registry) (`emit`), [`tools`](../packages/core/tools) (`emit`) | `browser-use-runtime` |
 | `tools/execute` | `waterfall` | [`packages/core/tools/src/events.ts:29`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`waterfall`) | `browser-use-runtime`, `browser-use-stagehand-native`, `claude-code-mods`, `computer-use-cua-driver-native`, [`session-checkpoint-policy`](../packages/session/session-checkpoint-policy), `timeout-policy` |
 | `tools/post-execute` | `waterfall` | [`packages/core/tools/src/events.ts:41`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`waterfall`) | `claude-code-mods`, [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), [`repeat-tool-reminder`](../packages/guard/repeat-tool-reminder), [`spill-policy`](../packages/spill/spill-policy), [`tool-fs-search`](../packages/fs/tool-fs-search) |
-| `tools/pre-execute` | `waterfall` | [`packages/core/tools/src/events.ts:18`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`waterfall`) | `auto-review`, [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), [`tool-jobs`](../packages/jobs/tool-jobs), [`workspace-changes`](../packages/deliverables/workspace-changes) |
+| `tools/pre-execute` | `waterfall` | [`packages/core/tools/src/events.ts:18`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`waterfall`) | `auto-review`, [`hooks-claude-code`](../packages/experimental/hooks-claude-code), [`hooks-codex`](../packages/experimental/hooks-codex), `liveshare`, [`tool-jobs`](../packages/jobs/tool-jobs), [`workspace-changes`](../packages/deliverables/workspace-changes) |
 | `tools/ptc-dispatch-log` | `waterfall` | [`packages/core/tool-executor-ptc/src/runtime-types.ts:46`](../packages/core/tool-executor-ptc/src/runtime-types.ts) | [`tool-executor-ptc`](../packages/core/tool-executor-ptc) (`waterfall`) | [`spill-policy`](../packages/spill/spill-policy) |
-| `tools/result` | `emit` | [`packages/core/tools/src/events.ts:49`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`events.dispatch`) | [`action-cards`](../packages/experimental/action-cards), [`agent-instructions`](../packages/context/agent-instructions), `claude-code-mods`, `forge-session`, [`subagent`](../packages/subagent/subagent), [`tool-present`](../packages/deliverables/tool-present), `ui-trajectory` |
+| `tools/result` | `emit` | [`packages/core/tools/src/events.ts:49`](../packages/core/tools/src/events.ts) | [`tools`](../packages/core/tools) (`events.dispatch`) | [`action-cards`](../packages/experimental/action-cards), [`agent-instructions`](../packages/context/agent-instructions), `claude-code-mods`, `forge-session`, `liveshare`, [`subagent`](../packages/subagent/subagent), [`tool-present`](../packages/deliverables/tool-present), `ui-trajectory` |
 | `user-questions/request` | `waterfall` | [`packages/interaction/user-questions/src/types.ts:174`](../packages/interaction/user-questions/src/types.ts) | [`user-questions`](../packages/interaction/user-questions) (`waterfall`) | `remotes`, `server` |
 | `webserver/index-inject` | `emit` | [`packages/host/webserver/src/index.ts:44`](../packages/host/webserver/src/index.ts) | `webserver` (`emit`) | `connection`, `inspector`, `modules`, `remote-access`, `shortcuts`, `ui-sidebar-documentpreview`, `ui-theme` |
 | `workflow/agent-end` | `emit` | [`packages/workflow/workflow/src/index.ts:79`](../packages/workflow/workflow/src/index.ts) | [`workflow`](../packages/workflow/workflow) (`events.dispatch`) | [`tool-workflow`](../packages/workflow/tool-workflow) |
@@ -106,14 +106,16 @@
 | Event string | Dispatchers | Listeners |
 | --- | --- | --- |
 | `agent/request` | [`agent-loop`](../packages/core/agent-loop) (`waterfall`) | [`compaction-basic`](../packages/compaction/compaction-basic) |
+| `connection/reset` | `gateway` (`emit`) | `terminal-controller`, `ui-settings` |
 | `internal/config` | - | [`llm-pi-ai`](../packages/llm/llm-pi-ai) |
 | `internal/dispatch` | - | [`terminal-bash`](../packages/terminal/terminal-bash) |
 | `internal/plugin` | - | `computer-use-cua-driver-native`, `inspector`, `loader`, [`lsp-stdio`](../packages/lsp/lsp-stdio), [`mcp-client`](../packages/mcp/mcp-client), `modules` |
 | `internal/service` | - | `client-ui-forge`, `gateway` |
-| `internal/status` | - | [`agent`](../packages/core/agent), `inspector`, `translator`, [`web`](../packages/web/web) |
-| `internal/update` | - | [`app-boot`](../packages/boot/app-boot) |
+| `internal/status` | - | [`agent`](../packages/core/agent), `claude-code-mods`, `inspector`, `translator`, [`web`](../packages/web/web) |
 | `loader/volatile-update` | - | [`llm-deepseek`](../packages/llm/llm-deepseek), [`llm-deepseek-api-key`](../packages/llm/llm-deepseek-api-key), [`llm-pi-ai`](../packages/llm/llm-pi-ai), [`plugin-market`](../packages/boot/plugin-market), `product-analytics`, `speech-to-text` |
+| `locale/change` | `locale` (`emit`) | `locale` |
 | `slots/changed` | `ui-renderer` (`emit`) | - |
+| `theme/change` | `ui-theme` (`emit`) | `ui-layout`, `ui-theme` |
 <!-- END GENERATED event-producer-consumer:undeclared -->
 
 Maintenance mode: generated: Cordis event declarations and producer/listener edges are resolved from the repository TypeScript Program.
diff --git a/docs/module-graph.md b/docs/module-graph.md
index 546a5f5925..433befe3a0 100644
--- a/docs/module-graph.md
+++ b/docs/module-graph.md
@@ -165,12 +165,14 @@ flowchart TD
     pkg_client_ui_brand_official["client-ui-brand-official"]
     pkg_client_ui_chat["client-ui-chat"]
     pkg_client_ui_commands["client-ui-commands"]
+    pkg_client_ui_context_menu["client-ui-context-menu"]
     pkg_client_ui_conversation["client-ui-conversation"]
     pkg_client_ui_deliverables["client-ui-deliverables"]
     pkg_client_ui_directory_picker_browse["client-ui-directory-picker-browse"]
     pkg_client_ui_directory_picker_native["client-ui-directory-picker-native"]
     pkg_client_ui_dockkit["client-ui-dockkit"]
     pkg_client_ui_entry_customization["client-ui-entry-customization"]
+    pkg_client_ui_file_actions["client-ui-file-actions"]
     pkg_client_ui_file_drag["client-ui-file-drag"]
     pkg_client_ui_goal["client-ui-goal"]
     pkg_client_ui_input_trigger["client-ui-input-trigger"]
@@ -286,6 +288,7 @@ flowchart TD
     pkg_experimental_forge_session["experimental-forge-session"]
     pkg_experimental_inspector["experimental-inspector"]
     pkg_experimental_inspector_profile["experimental-inspector-profile"]
+    pkg_experimental_liveshare["experimental-liveshare"]
     pkg_experimental_liveshare_protocol["experimental-liveshare-protocol"]
     pkg_experimental_plugin_market_bundle["experimental-plugin-market-bundle"]
     pkg_experimental_ptc_runtime_python["experimental-ptc-runtime-python"]
@@ -498,6 +501,7 @@ flowchart TD
   pkg_credentials_local --> pkg_credentials
   pkg_credentials_local --> pkg_home_paths
   pkg_credentials_local --> pkg_launch_environment
+  pkg_experimental_liveshare --> pkg_scope
   pkg_anonymous_user_id --> pkg_brand
   pkg_anonymous_user_id --> pkg_home_paths
   pkg_lsp --> pkg_brand
@@ -1459,6 +1463,7 @@ flowchart TD
   pkg_client_test_runtime --> pkg_client_modules
   pkg_client_test_runtime --> pkg_client_store
   pkg_client_test_runtime --> pkg_client_ui_chat
+  pkg_client_test_runtime --> pkg_client_ui_context_menu
   pkg_client_test_runtime --> pkg_client_ui_conversation
   pkg_client_test_runtime --> pkg_client_ui_renderer
   pkg_client_test_runtime --> pkg_client_ui_session
@@ -1543,12 +1548,14 @@ flowchart TD
 | [`client-ui-brand-official`](../packages/client/ui-brand-official) | `client` | — |
 | [`client-ui-chat`](../packages/client/ui-chat) | `client` | — |
 | [`client-ui-commands`](../packages/client/ui-commands) | `client` | — |
+| [`client-ui-context-menu`](../packages/client/ui-context-menu) | `client` | — |
 | [`client-ui-conversation`](../packages/client/ui-conversation) | `client` | — |
 | [`client-ui-deliverables`](../packages/client/ui-deliverables) | `client` | — |
 | [`client-ui-directory-picker-browse`](../packages/client/ui-directory-picker-browse) | `client` | — |
 | [`client-ui-directory-picker-native`](../packages/client/ui-directory-picker-native) | `client` | — |
 | [`client-ui-dockkit`](../packages/client/ui-dockkit) | `client` | — |
 | [`client-ui-entry-customization`](../packages/client/ui-entry-customization) | `client` | — |
+| [`client-ui-file-actions`](../packages/client/ui-file-actions) | `client` | — |
 | [`client-ui-file-drag`](../packages/client/ui-file-drag) | `client` | — |
 | [`client-ui-goal`](../packages/client/ui-goal) | `client` | — |
 | [`client-ui-input-trigger`](../packages/client/ui-input-trigger) | `client` | — |
@@ -1654,6 +1661,7 @@ flowchart TD
 | [`computer-use`](../packages/computer-use/computer-use) | `computer-use` | [`brand`](../packages/util/brand) |
 | [`authorization`](../packages/credentials/authorization) | `credentials` | [`credentials`](../packages/credentials/credentials), [`llm`](../packages/llm/llm) |
 | [`credentials-local`](../packages/credentials/credentials-local) | `credentials` | [`atomic-write`](../packages/util/atomic-write), [`credentials`](../packages/credentials/credentials), [`home-paths`](../packages/util/home-paths), [`launch-environment`](../packages/util/launch-environment) |
+| [`experimental-liveshare`](../packages/experimental/liveshare) | `experimental` | [`scope`](../packages/core/scope) |
 | [`anonymous-user-id`](../packages/identity/anonymous-user-id) | `identity` | [`brand`](../packages/util/brand), [`home-paths`](../packages/util/home-paths) |
 | [`lsp`](../packages/lsp/lsp) | `lsp` | [`brand`](../packages/util/brand), [`llm`](../packages/llm/llm) |
 | [`storage-domain`](../packages/storage/storage-domain) | `storage` | [`storage`](../packages/storage/storage) |
@@ -1860,7 +1868,7 @@ flowchart TD
 | [`experimental-tool-agent-team`](../packages/experimental/tool-agent-team) | `experimental` | [`agent`](../packages/core/agent), [`experimental-agent-team`](../packages/experimental/agent-team), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools) |
 | [`schedule`](../packages/schedule/schedule) | `schedule` | [`agent`](../packages/core/agent), [`api-session-controller`](../packages/api/session-controller), [`brand`](../packages/util/brand), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence`](../packages/session/session-persistence), [`session-projection`](../packages/session/session-projection), [`storage-domain`](../packages/storage/storage-domain), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools), [`typert-protocol`](../packages/typert/protocol), [`util-time`](../packages/util/time), [`workspace`](../packages/workspace/workspace) |
 | [`sdk-client`](../packages/sdk/client) | `sdk` | [`llm`](../packages/llm/llm), [`sdk-protocol`](../packages/sdk/protocol), [`session`](../packages/core/session) |
-| [`client-test-runtime`](../packages/test-support/client-runtime) | `test-support` | [`api-gateway`](../packages/api/gateway), [`api-session-controller`](../packages/api/session-controller), [`api-workspace-controller`](../packages/api/workspace-controller), [`attachment`](../packages/attachment/attachment), [`client-connection`](../packages/client/connection), [`client-hmr`](../packages/client/hmr), [`client-modules`](../packages/client/modules), [`client-store`](../packages/client/store), [`client-ui-chat`](../packages/client/ui-chat), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-renderer`](../packages/client/ui-renderer), [`client-ui-session`](../packages/client/ui-session), [`client-ui-settings`](../packages/client/ui-settings), [`client-ui-slots`](../packages/client/ui-slots), [`client-web`](../packages/client/web), [`remote-mock`](../packages/test-support/remote-mock), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`typert-protocol`](../packages/typert/protocol) |
+| [`client-test-runtime`](../packages/test-support/client-runtime) | `test-support` | [`api-gateway`](../packages/api/gateway), [`api-session-controller`](../packages/api/session-controller), [`api-workspace-controller`](../packages/api/workspace-controller), [`attachment`](../packages/attachment/attachment), [`client-connection`](../packages/client/connection), [`client-hmr`](../packages/client/hmr), [`client-modules`](../packages/client/modules), [`client-store`](../packages/client/store), [`client-ui-chat`](../packages/client/ui-chat), [`client-ui-context-menu`](../packages/client/ui-context-menu), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-renderer`](../packages/client/ui-renderer), [`client-ui-session`](../packages/client/ui-session), [`client-ui-settings`](../packages/client/ui-settings), [`client-ui-slots`](../packages/client/ui-slots), [`client-web`](../packages/client/web), [`remote-mock`](../packages/test-support/remote-mock), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`typert-protocol`](../packages/typert/protocol) |
 | [`subagent-dsh-sdk`](../packages/subagent/subagent-dsh-sdk) | `subagent` | [`agent`](../packages/core/agent), [`llm`](../packages/llm/llm), [`sdk-client`](../packages/sdk/client), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`subprocess`](../packages/subprocess/subprocess) |
 | [`tool-schedule`](../packages/schedule/tool-schedule) | `schedule` | [`llm`](../packages/llm/llm), [`schedule`](../packages/schedule/schedule), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools) |
 | [`sdk-jsonrpc-server`](../packages/sdk/server) | `sdk` | [`agent`](../packages/core/agent), [`attachment`](../packages/attachment/attachment), [`llm`](../packages/llm/llm), [`llm-deepseek-api-key`](../packages/llm/llm-deepseek-api-key), [`schedule`](../packages/schedule/schedule), [`scope`](../packages/core/scope), [`sdk-protocol`](../packages/sdk/protocol), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`user-approval`](../packages/interaction/user-approval), [`user-questions`](../packages/interaction/user-questions), [`working-directory`](../packages/session/working-directory) |
diff --git a/docs/module-graph.zh.md b/docs/module-graph.zh.md
index 03de9ceeeb..3cc4f214b7 100644
--- a/docs/module-graph.zh.md
+++ b/docs/module-graph.zh.md
@@ -167,12 +167,14 @@ flowchart TD
     pkg_client_ui_brand_official["client-ui-brand-official"]
     pkg_client_ui_chat["client-ui-chat"]
     pkg_client_ui_commands["client-ui-commands"]
+    pkg_client_ui_context_menu["client-ui-context-menu"]
     pkg_client_ui_conversation["client-ui-conversation"]
     pkg_client_ui_deliverables["client-ui-deliverables"]
     pkg_client_ui_directory_picker_browse["client-ui-directory-picker-browse"]
     pkg_client_ui_directory_picker_native["client-ui-directory-picker-native"]
     pkg_client_ui_dockkit["client-ui-dockkit"]
     pkg_client_ui_entry_customization["client-ui-entry-customization"]
+    pkg_client_ui_file_actions["client-ui-file-actions"]
     pkg_client_ui_file_drag["client-ui-file-drag"]
     pkg_client_ui_goal["client-ui-goal"]
     pkg_client_ui_input_trigger["client-ui-input-trigger"]
@@ -288,6 +290,7 @@ flowchart TD
     pkg_experimental_forge_session["experimental-forge-session"]
     pkg_experimental_inspector["experimental-inspector"]
     pkg_experimental_inspector_profile["experimental-inspector-profile"]
+    pkg_experimental_liveshare["experimental-liveshare"]
     pkg_experimental_liveshare_protocol["experimental-liveshare-protocol"]
     pkg_experimental_plugin_market_bundle["experimental-plugin-market-bundle"]
     pkg_experimental_ptc_runtime_python["experimental-ptc-runtime-python"]
@@ -500,6 +503,7 @@ flowchart TD
   pkg_credentials_local --> pkg_credentials
   pkg_credentials_local --> pkg_home_paths
   pkg_credentials_local --> pkg_launch_environment
+  pkg_experimental_liveshare --> pkg_scope
   pkg_anonymous_user_id --> pkg_brand
   pkg_anonymous_user_id --> pkg_home_paths
   pkg_lsp --> pkg_brand
@@ -1461,6 +1465,7 @@ flowchart TD
   pkg_client_test_runtime --> pkg_client_modules
   pkg_client_test_runtime --> pkg_client_store
   pkg_client_test_runtime --> pkg_client_ui_chat
+  pkg_client_test_runtime --> pkg_client_ui_context_menu
   pkg_client_test_runtime --> pkg_client_ui_conversation
   pkg_client_test_runtime --> pkg_client_ui_renderer
   pkg_client_test_runtime --> pkg_client_ui_session
@@ -1545,12 +1550,14 @@ flowchart TD
 | [`client-ui-brand-official`](../packages/client/ui-brand-official) | `client` | — |
 | [`client-ui-chat`](../packages/client/ui-chat) | `client` | — |
 | [`client-ui-commands`](../packages/client/ui-commands) | `client` | — |
+| [`client-ui-context-menu`](../packages/client/ui-context-menu) | `client` | — |
 | [`client-ui-conversation`](../packages/client/ui-conversation) | `client` | — |
 | [`client-ui-deliverables`](../packages/client/ui-deliverables) | `client` | — |
 | [`client-ui-directory-picker-browse`](../packages/client/ui-directory-picker-browse) | `client` | — |
 | [`client-ui-directory-picker-native`](../packages/client/ui-directory-picker-native) | `client` | — |
 | [`client-ui-dockkit`](../packages/client/ui-dockkit) | `client` | — |
 | [`client-ui-entry-customization`](../packages/client/ui-entry-customization) | `client` | — |
+| [`client-ui-file-actions`](../packages/client/ui-file-actions) | `client` | — |
 | [`client-ui-file-drag`](../packages/client/ui-file-drag) | `client` | — |
 | [`client-ui-goal`](../packages/client/ui-goal) | `client` | — |
 | [`client-ui-input-trigger`](../packages/client/ui-input-trigger) | `client` | — |
@@ -1656,6 +1663,7 @@ flowchart TD
 | [`computer-use`](../packages/computer-use/computer-use) | `computer-use` | [`brand`](../packages/util/brand) |
 | [`authorization`](../packages/credentials/authorization) | `credentials` | [`credentials`](../packages/credentials/credentials), [`llm`](../packages/llm/llm) |
 | [`credentials-local`](../packages/credentials/credentials-local) | `credentials` | [`atomic-write`](../packages/util/atomic-write), [`credentials`](../packages/credentials/credentials), [`home-paths`](../packages/util/home-paths), [`launch-environment`](../packages/util/launch-environment) |
+| [`experimental-liveshare`](../packages/experimental/liveshare) | `experimental` | [`scope`](../packages/core/scope) |
 | [`anonymous-user-id`](../packages/identity/anonymous-user-id) | `identity` | [`brand`](../packages/util/brand), [`home-paths`](../packages/util/home-paths) |
 | [`lsp`](../packages/lsp/lsp) | `lsp` | [`brand`](../packages/util/brand), [`llm`](../packages/llm/llm) |
 | [`storage-domain`](../packages/storage/storage-domain) | `storage` | [`storage`](../packages/storage/storage) |
@@ -1862,7 +1870,7 @@ flowchart TD
 | [`experimental-tool-agent-team`](../packages/experimental/tool-agent-team) | `experimental` | [`agent`](../packages/core/agent), [`experimental-agent-team`](../packages/experimental/agent-team), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools) |
 | [`schedule`](../packages/schedule/schedule) | `schedule` | [`agent`](../packages/core/agent), [`api-session-controller`](../packages/api/session-controller), [`brand`](../packages/util/brand), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-persistence`](../packages/session/session-persistence), [`session-projection`](../packages/session/session-projection), [`storage-domain`](../packages/storage/storage-domain), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools), [`typert-protocol`](../packages/typert/protocol), [`util-time`](../packages/util/time), [`workspace`](../packages/workspace/workspace) |
 | [`sdk-client`](../packages/sdk/client) | `sdk` | [`llm`](../packages/llm/llm), [`sdk-protocol`](../packages/sdk/protocol), [`session`](../packages/core/session) |
-| [`client-test-runtime`](../packages/test-support/client-runtime) | `test-support` | [`api-gateway`](../packages/api/gateway), [`api-session-controller`](../packages/api/session-controller), [`api-workspace-controller`](../packages/api/workspace-controller), [`attachment`](../packages/attachment/attachment), [`client-connection`](../packages/client/connection), [`client-hmr`](../packages/client/hmr), [`client-modules`](../packages/client/modules), [`client-store`](../packages/client/store), [`client-ui-chat`](../packages/client/ui-chat), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-renderer`](../packages/client/ui-renderer), [`client-ui-session`](../packages/client/ui-session), [`client-ui-settings`](../packages/client/ui-settings), [`client-ui-slots`](../packages/client/ui-slots), [`client-web`](../packages/client/web), [`remote-mock`](../packages/test-support/remote-mock), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`typert-protocol`](../packages/typert/protocol) |
+| [`client-test-runtime`](../packages/test-support/client-runtime) | `test-support` | [`api-gateway`](../packages/api/gateway), [`api-session-controller`](../packages/api/session-controller), [`api-workspace-controller`](../packages/api/workspace-controller), [`attachment`](../packages/attachment/attachment), [`client-connection`](../packages/client/connection), [`client-hmr`](../packages/client/hmr), [`client-modules`](../packages/client/modules), [`client-store`](../packages/client/store), [`client-ui-chat`](../packages/client/ui-chat), [`client-ui-context-menu`](../packages/client/ui-context-menu), [`client-ui-conversation`](../packages/client/ui-conversation), [`client-ui-renderer`](../packages/client/ui-renderer), [`client-ui-session`](../packages/client/ui-session), [`client-ui-settings`](../packages/client/ui-settings), [`client-ui-slots`](../packages/client/ui-slots), [`client-web`](../packages/client/web), [`remote-mock`](../packages/test-support/remote-mock), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`typert-protocol`](../packages/typert/protocol) |
 | [`subagent-dsh-sdk`](../packages/subagent/subagent-dsh-sdk) | `subagent` | [`agent`](../packages/core/agent), [`llm`](../packages/llm/llm), [`sdk-client`](../packages/sdk/client), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`subprocess`](../packages/subprocess/subprocess) |
 | [`tool-schedule`](../packages/schedule/tool-schedule) | `schedule` | [`llm`](../packages/llm/llm), [`schedule`](../packages/schedule/schedule), [`subagent`](../packages/subagent/subagent), [`tools`](../packages/core/tools) |
 | [`sdk-jsonrpc-server`](../packages/sdk/server) | `sdk` | [`agent`](../packages/core/agent), [`attachment`](../packages/attachment/attachment), [`llm`](../packages/llm/llm), [`llm-deepseek-api-key`](../packages/llm/llm-deepseek-api-key), [`schedule`](../packages/schedule/schedule), [`scope`](../packages/core/scope), [`sdk-protocol`](../packages/sdk/protocol), [`session`](../packages/core/session), [`subagent`](../packages/subagent/subagent), [`user-approval`](../packages/interaction/user-approval), [`user-questions`](../packages/interaction/user-questions), [`working-directory`](../packages/session/working-directory) |
diff --git a/docs/persistence-catalog.i18n.yaml b/docs/persistence-catalog.i18n.yaml
index ffdbea91d5..dce8443743 100644
--- a/docs/persistence-catalog.i18n.yaml
+++ b/docs/persistence-catalog.i18n.yaml
@@ -9,8 +9,8 @@
   en: 1387c4505dde2faf
   zh: 48570fa1c13d6910
 /session-persistence-event-catalog/persistence-type-fingerprints:
-  en: 519d46d6078d3f68
-  zh: ec9aec262312c573
+  en: 31c6dab0878b05a8
+  zh: 176d0f7cbdc3fce3
 /session-persistence-event-catalog/event-envelope:
   en: 56414ffd00cdc32a
   zh: 6dc11eb013e95e41
@@ -186,14 +186,14 @@
   en: 6c6a27578dff5828
   zh: 9a5add2bc0df2d0a
 /session-persistence-event-catalog/events/session/session-title-llm-request-log-only:
-  en: 50d9e29d3d2bfe52
-  zh: 3ff1d959cf7776b9
+  en: 59b02baa2be32ca0
+  zh: 3637c99652ca89cf
 /session-persistence-event-catalog/events/session-log-deepseek:
   en: 7b827672c80aecdd
   zh: 7b827672c80aecdd
 /session-persistence-event-catalog/events/session-log-deepseek/session-log-deepseek-delivery-accepted-log-only:
-  en: 4e9ce9182ec05808
-  zh: 7f643a6756ec8f76
+  en: a3e2059fcc540b64
+  zh: cc9933fd677560f0
 /session-persistence-event-catalog/events/step:
   en: bd0dcbbc352b771a
   zh: bd0dcbbc352b771a
@@ -753,8 +753,11 @@
   en: 1e5fb67af2382e55
   zh: 1e5fb67af2382e55
 /session-persistence-event-catalog/resolved-persistence-types/set:
-  en: b2a724cef8d97ef7
-  zh: b2a724cef8d97ef7
+  en: 8e70b63b25a29f58
+  zh: 8e70b63b25a29f58
+/session-persistence-event-catalog/resolved-persistence-types/share-viewer:
+  en: 761fbf929bc6e6ed
+  zh: 761fbf929bc6e6ed
 /session-persistence-event-catalog/resolved-persistence-types/skill-catalog:
   en: 9483a26e4c21d639
   zh: 9483a26e4c21d639
@@ -1008,11 +1011,11 @@
   en: a6a2e38fdd6d127a
   zh: 1fe82356d89f5769
 /session-persistence-event-catalog/resolved-persistence-types/deepseeksearchllmrequest:
-  en: cf3979c698e2b2ac
-  zh: 6252c8b668faa706
+  en: fd75d1f4b9bd643c
+  zh: dde892ea9752f298
 /session-persistence-event-catalog/resolved-persistence-types/developermessage:
-  en: 16992572a6919e52
-  zh: 853f4873fd520444
+  en: c6171fd8144d74b1
+  zh: 2f3dd34cc8d7ed92
 /session-persistence-event-catalog/resolved-persistence-types/epochheader:
   en: 3bdc8ecd0bdf0c9c
   zh: 0fe5b75c174ebab4
@@ -1122,11 +1125,11 @@
   en: 6dbe099c62f7c226
   zh: 6fd788f63c038c91
 /session-persistence-event-catalog/resolved-persistence-types/llmretrystartedeventdata:
-  en: 5d61649043e317aa
-  zh: bdf9b9d553d291cf
+  en: 06b510217b6056c4
+  zh: 5b3a1e022f96de57
 /session-persistence-event-catalog/resolved-persistence-types/message:
-  en: 56953b055da0dc2b
-  zh: dcaa193ddb2fece0
+  en: 7a8ec632289bc7f9
+  zh: 5c90cb4f3d5d0a67
 /session-persistence-event-catalog/resolved-persistence-types/messagefeedbackdelete:
   en: c582953270d4ca44
   zh: 966ccfe2e7660a2a
@@ -1137,14 +1140,14 @@
   en: f58575a1fc96df42
   zh: 9f0c6ed9033e5c9d
 /session-persistence-event-catalog/resolved-persistence-types/messagefeedbackrating:
-  en: 70ade19513d0070f
-  zh: ff9acb50974a32ae
+  en: 65fb012fcc0fa7db
+  zh: b829c586714e45e2
 /session-persistence-event-catalog/resolved-persistence-types/messagesource:
-  en: b1bd7c8bd2309d45
-  zh: d434e41517c3620d
+  en: ddeed90cb6112496
+  zh: cefb41765c45b22f
 /session-persistence-event-catalog/resolved-persistence-types/message~2:
-  en: dcd71b3190faff96
-  zh: b2c07224705aa52e
+  en: 8e96551640079569
+  zh: a06d587638d42237
 /session-persistence-event-catalog/resolved-persistence-types/modelmessagesource:
   en: 5f9154ca34235ab9
   zh: a833105910ebfa82
@@ -1164,11 +1167,8 @@
   en: 3e36e2f29ff1b506
   zh: 3dcc1a1dced59d9f
 /session-persistence-event-catalog/resolved-persistence-types/presentedfile~2:
-  en: bb11552744e477b8
-  zh: afb881f3ebf97e68
-/session-persistence-event-catalog/resolved-persistence-types/principal:
-  en: 6d0d81e0e833403e
-  zh: fa47cd75ee75f948
+  en: 764b3e83192daae3
+  zh: aa3f87bffe8fb501
 /session-persistence-event-catalog/resolved-persistence-types/ptcdispatcheventdata:
   en: c0f7b22b41cb0608
   zh: de14a1b5cac17665
@@ -1206,11 +1206,11 @@
   en: 9a54c4478ad3b620
   zh: 02c4c1fd7e252770
 /session-persistence-event-catalog/resolved-persistence-types/sessiontitleeventdata:
-  en: 46baac9dcdfb1b63
-  zh: 30a357bb8405c147
+  en: 1f9f610fa0e05abf
+  zh: 11560710a1b871de
 /session-persistence-event-catalog/resolved-persistence-types/sessiontitlellmrequesteventdata:
-  en: 035b656ba6500174
-  zh: fc9d4d7cd154ca78
+  en: 465fe144e60dd62f
+  zh: 29e1029426106c3b
 /session-persistence-event-catalog/resolved-persistence-types/sessiontitlemodelidentity:
   en: 9531468264499498
   zh: 9da23c0ad2776563
@@ -1218,8 +1218,11 @@
   en: 13de8e35b749db45
   zh: 01e4f3bcb6784fc8
 /session-persistence-event-catalog/resolved-persistence-types/sessiontitlesource:
-  en: d842f1883e1b97d1
-  zh: 41356f94354511ce
+  en: 8e07874aa7841b0b
+  zh: d93527a0f8837075
+/session-persistence-event-catalog/resolved-persistence-types/shareviewerprincipal:
+  en: a7b8c3f842059eec
+  zh: 4b345faa13cc39f6
 /session-persistence-event-catalog/resolved-persistence-types/skillcatalogsource:
   en: 2c3148e4a9f0c8f9
   zh: dab42cb485067bcd
@@ -1317,14 +1320,14 @@
   en: 778debd61e0284a2
   zh: 2cc82ad9e80f18b1
 /session-persistence-event-catalog/resolved-persistence-types/turnendreason:
-  en: 3cbc1b5ae251451f
-  zh: a95ff0555e368432
+  en: 953127f7cf1e0866
+  zh: 3613ef1aafd8191a
 /session-persistence-event-catalog/resolved-persistence-types/usermessage:
-  en: 1b30ae0450f156bd
-  zh: 00bb0efae7ac741e
+  en: a15a08beb2b824da
+  zh: 4fd8dc6b9680c4cf
 /session-persistence-event-catalog/resolved-persistence-types/usermessage~2:
-  en: 1f242f48a3c8c230
-  zh: 2516be50ce573b0c
+  en: 85e537b82f1da7d8
+  zh: 73a1b9d4b5d29ab0
 /session-persistence-event-catalog/resolved-persistence-types/workflowagentoutcome:
   en: d0a3f9aab18c3de5
   zh: 76ac69a835ca4e29
@@ -1371,9 +1374,12 @@
   en: f692844b29923b2e
   zh: 72f12bca08d63267
 /session-persistence-event-catalog/resolved-persistence-types/union-2-variants~2:
-  en: 69d360cf5a1ae6b4
-  zh: f23faf39a2a0e6f1
+  en: 4a1acf31ea15d403
+  zh: d1ebe94ffd308763
 /session-persistence-event-catalog/resolved-persistence-types/union-2-variants~3:
+  en: 4318d8c6211d4e95
+  zh: d08f3f8c11c32506
+/session-persistence-event-catalog/resolved-persistence-types/union-2-variants~4:
   en: 5a1af9849b0967ea
   zh: 1085d793bbc47360
 /session-persistence-event-catalog/resolved-persistence-types/union-3-variants:
@@ -1482,8 +1488,11 @@
   en: a07969828eed2e6f
   zh: e06893743af544b5
 /session-persistence-event-catalog/resolved-persistence-types/dialect-handlerid-matcher-point:
-  en: eeba88520aacd126
-  zh: 8e2ca4e2bd2c1e3a
+  en: 9748b4f0facfe9f8
+  zh: 83ae2cd2cd02b804
+/session-persistence-event-catalog/resolved-persistence-types/displayname-providerid-subjectid-tenantid:
+  en: d2c98ed9b98325ae
+  zh: bf8c2f7967cf9cc8
 /session-persistence-event-catalog/resolved-persistence-types/end-start:
   en: 4b7a8793663d3fef
   zh: 249459c825d330c3
@@ -1503,11 +1512,11 @@
   en: 4cb1c48095df98dc
   zh: 5a03e44761af559e
 /session-persistence-event-catalog/resolved-persistence-types/header-reason-startsseries:
-  en: 27f5b76003ac1ead
-  zh: 2a5a0490cc22512b
+  en: 7d1610d20e987988
+  zh: 1297cba0f2a2c73d
 /session-persistence-event-catalog/resolved-persistence-types/headerseq-message-step-turn:
-  en: 598021cdfe2a8687
-  zh: 02e63a8b453f2f4e
+  en: 4f9635604ed5b84d
+  zh: 74810a2d049907e6
 /session-persistence-event-catalog/resolved-persistence-types/height-width:
   en: a5df50710083ac25
   zh: aad3ccf6f6de70e4
@@ -1524,11 +1533,11 @@
   en: 41f73c58a77dfa28
   zh: af77f4aee3cb4a40
 /session-persistence-event-catalog/resolved-persistence-types/inherited:
-  en: 7e64cae3bd1b71e9
-  zh: 7451c0639044c59a
+  en: 8b5c65ce7b57514f
+  zh: 231494d71e5d635a
 /session-persistence-event-catalog/resolved-persistence-types/inserted-outcome-removedcount-start:
-  en: df2dd98c35b34bd2
-  zh: ee25992a3f29d561
+  en: 5a3be677a8dc51ff
+  zh: c5fc8b80f73e72d9
 /session-persistence-event-catalog/resolved-persistence-types/interrupted-message-step-stream:
   en: 8e86cd838e3e4a49
   zh: f5fec2a8adf1f3cc
@@ -1668,8 +1677,11 @@
   en: 3c986a3b9cbc4f95
   zh: 875bc0c6d786f80e
 /session-persistence-event-catalog/resolved-persistence-types/kind-model-selection-form-snapshot:
-  en: 509f9a91aedb2da1
-  zh: db1071678bfb98d1
+  en: b0e849caa4bd0be7
+  zh: e5d0dbcf8a326caf
+/session-persistence-event-catalog/resolved-persistence-types/kind-owner:
+  en: 686b6465397b96c2
+  zh: c21c1cc3c9df4fd8
 /session-persistence-event-catalog/resolved-persistence-types/kind-parent:
   en: 5ab43c283829de53
   zh: 5ed4e90922a3a88b
@@ -1854,11 +1866,11 @@
   en: 08be4349548406a9
   zh: 8e7cf9966198ef78
 /session-persistence-event-catalog/resolved-persistence-types/kind-tool-registry:
-  en: 5a0bbf4c76266ac5
-  zh: 0b20854f90f9d74d
+  en: 4e102391d685eff5
+  zh: 9762243a13014f3d
 /session-persistence-event-catalog/resolved-persistence-types/kind-user:
-  en: 3d3ae20cba45bae8
-  zh: 04ad200556cd8ced
+  en: 984cac7296874653
+  zh: 13b4ee707a8ce305
 /session-persistence-event-catalog/resolved-persistence-types/kind-user-approval:
   en: a52d2dfbaf844127
   zh: 4c5306ca40f20873
@@ -1920,8 +1932,8 @@
   en: 04b34b8ffe7e7764
   zh: a792d5371516fd9d
 /session-persistence-event-catalog/resolved-persistence-types/sessionformatversion-sessionid-throughseq:
-  en: 8aaa02b06896492d
-  zh: 4dd0e1ee40d8f22d
+  en: 8063597183ef767f
+  zh: b064698c54089f07
 /session-persistence-event-catalog/resolved-persistence-types/shadowedrange-shadowedseqs-shadowedtokencount:
   en: 7a2ab7b62244f43b
   zh: 1084e3f8876feebc
@@ -1944,11 +1956,11 @@
   en: 374b8adee8d571fa
   zh: b21057efc58e6490
 /session-persistence-event-catalog/resolved-persistence-types/type-agent-preset-selected:
-  en: a990181189cf77ac
-  zh: 70198727356d1ad3
+  en: da6e084997b20cdc
+  zh: 1780f6fcf3496de1
 /session-persistence-event-catalog/resolved-persistence-types/type-agent-inbox-spliced:
-  en: f3b491e65c79b3a0
-  zh: 2d3e53ceb67a55a3
+  en: 1a79ed1a97145a14
+  zh: d6f658a85c1e65f7
 /session-persistence-event-catalog/resolved-persistence-types/type-approval-asked:
   en: 9c77f18b0dad22f0
   zh: 8894cf2878fe90db
@@ -1992,11 +2004,11 @@
   en: ba73fb10b7e2ffc9
   zh: 8d5c97e63e5f16da
 /session-persistence-event-catalog/resolved-persistence-types/type-deliverables-presented:
-  en: 17956f440c284ea3
-  zh: 5dbfd68d50483047
+  en: b9c35ef9a9e1d585
+  zh: 7b8ad008c8b7389c
 /session-persistence-event-catalog/resolved-persistence-types/type-developer-message:
-  en: ded2f3b02f776800
-  zh: 4d6619c283a18e3c
+  en: b0a3c504326f42f9
+  zh: f13a1c1ca28f7da3
 /session-persistence-event-catalog/resolved-persistence-types/type-disabled:
   en: 585627a50ece4e5f
   zh: 157837aee3da0ac3
@@ -2070,11 +2082,11 @@
   en: acf7e21e4d21ebff
   zh: fb83a853634d204a
 /session-persistence-event-catalog/resolved-persistence-types/type-session-title:
-  en: f0acf1c873cd9e2a
-  zh: b8e175e14306afd4
+  en: 5a42c1482248e385
+  zh: c7ba7d071e4756de
 /session-persistence-event-catalog/resolved-persistence-types/type-session-title-llm-request:
-  en: ab4f20d890eed5e5
-  zh: 6e4035a166821157
+  en: d88fd740ff167f04
+  zh: fe6598a1bf4cd9bf
 /session-persistence-event-catalog/resolved-persistence-types/type-step-end:
   en: 7fc233c4a569dae2
   zh: bc2b3fed4a397c00
@@ -2151,11 +2163,11 @@
   en: 1b045de96172be4b
   zh: 8a15c6f35b576b37
 /session-persistence-event-catalog/resolved-persistence-types/type-usage:
-  en: e8b2eedeb83ac7fb
-  zh: 036143c1ff567cf5
+  en: a1d9300dd7a7b043
+  zh: 3cb1e0e6834e9765
 /session-persistence-event-catalog/resolved-persistence-types/type-user-message:
-  en: 5b8341a673284ec1
-  zh: e3264a827babffeb
+  en: 44035d460a9d926b
+  zh: 8006b6dbfc58d5ae
 /session-persistence-event-catalog/resolved-persistence-types/type-web-deepseek-search-llm-request:
   en: 99c8837344178a47
   zh: bf746f5678346596
diff --git a/docs/persistence-catalog.md b/docs/persistence-catalog.md
index bb09364340..96128feabb 100644
--- a/docs/persistence-catalog.md
+++ b/docs/persistence-catalog.md
@@ -23,7 +23,7 @@ The [format references](persistence-changes/historical-formats/README.md) cover
 | `JsonlHeaderLine` | header | `18ee62b8900a4c3d046700f05d7a4d49d6cab2a660a020c87481d1603dd8bd4f` | [`HeaderLine`](#persistence-type-sha256-18ee62b8900a4c3d046700f05d7a4d49d6cab2a660a020c87481d1603dd8bd4f) |
 | `SessionEventEnvelope` | envelope | `5776e5553ff2dfe3f5bc202dbb1e7c9f93e35a531aebb7764c23b2b6153b2ccc` | [`union (3 variants)`](#persistence-type-sha256-5776e5553ff2dfe3f5bc202dbb1e7c9f93e35a531aebb7764c23b2b6153b2ccc) |
 | `event:agent-preset/selected` | event | `a10c17474eaf2ddab7095a099e0fe3d046fc18e56c3e344fc8894c05ff9ef97b` | [`{ type: "agent-preset/selected" }`](#persistence-type-sha256-a10c17474eaf2ddab7095a099e0fe3d046fc18e56c3e344fc8894c05ff9ef97b) |
-| `event:agent/inbox/spliced` | event | `9e8043098fb89db6d7c92a92c70146c5c8d24fa88f733c687fa29e5e7a58ab30` | [`{ type: "agent/inbox/spliced" }`](#persistence-type-sha256-9e8043098fb89db6d7c92a92c70146c5c8d24fa88f733c687fa29e5e7a58ab30) |
+| `event:agent/inbox/spliced` | event | `cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e` | [`{ type: "agent/inbox/spliced" }`](#persistence-type-sha256-cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e) |
 | `event:approval/asked` | event | `3bfeb47b58606f4661904bc723da612782214c463d01e6d61cd6d6193d7374e1` | [`{ type: "approval/asked" }`](#persistence-type-sha256-3bfeb47b58606f4661904bc723da612782214c463d01e6d61cd6d6193d7374e1) |
 | `event:approval/decided` | event | `bb1ab3d08f49a9f3b265f844cd78d5c49813062a7b34b54904b426f85d0ff6e3` | [`{ type: "approval/decided" }`](#persistence-type-sha256-bb1ab3d08f49a9f3b265f844cd78d5c49813062a7b34b54904b426f85d0ff6e3) |
 | `event:approval/policy` | event | `26718e15e7e395bce9642dba5bbe09b3b1a4ce2213d20d566cd9207d7fc5fb78` | [`{ type: "approval/policy" }`](#persistence-type-sha256-26718e15e7e395bce9642dba5bbe09b3b1a4ce2213d20d566cd9207d7fc5fb78) |
@@ -36,7 +36,7 @@ The [format references](persistence-changes/historical-formats/README.md) cover
 | `event:compaction/start` | event | `db874d463b0fdec77e9da1c4568f37cb70bd6596781eb93800db44fb8a116965` | [`{ type: "compaction/start" }`](#persistence-type-sha256-db874d463b0fdec77e9da1c4568f37cb70bd6596781eb93800db44fb8a116965) |
 | `event:compaction/summary` | event | `e2f9a41e0989f54ed8cee80f8db2bcf9d60a5c810dc9d45b83fa050b9dce7602` | [`{ type: "compaction/summary" }`](#persistence-type-sha256-e2f9a41e0989f54ed8cee80f8db2bcf9d60a5c810dc9d45b83fa050b9dce7602) |
 | `event:deliverables/presented` | event | `13d3d180f977bf78081d487ffa0ecb75857349bcab29a5a3fb48189fca2a6176` | [`{ type: "deliverables/presented" }`](#persistence-type-sha256-13d3d180f977bf78081d487ffa0ecb75857349bcab29a5a3fb48189fca2a6176) |
-| `event:developer/message` | event | `95acdbd066cf445d37092e5fdfe2e8717ef6ca1aed50f70e2e6037a6989a1f2f` | [`{ type: "developer/message" }`](#persistence-type-sha256-95acdbd066cf445d37092e5fdfe2e8717ef6ca1aed50f70e2e6037a6989a1f2f) |
+| `event:developer/message` | event | `70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f` | [`{ type: "developer/message" }`](#persistence-type-sha256-70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f) |
 | `event:feedback/message-delete` | event | `3ee93b06f3a125850337602bcdf155d2538c43a5c944ec55b1b3c365152d6796` | [`{ type: "feedback/message-delete" }`](#persistence-type-sha256-3ee93b06f3a125850337602bcdf155d2538c43a5c944ec55b1b3c365152d6796) |
 | `event:feedback/message-put` | event | `b5086d249e8502e9ead1d39156bb8d559bde7951cac0f14ce150345b4e42a2bf` | [`{ type: "feedback/message-put" }`](#persistence-type-sha256-b5086d249e8502e9ead1d39156bb8d559bde7951cac0f14ce150345b4e42a2bf) |
 | `event:feedback/record` | event | `b54940ff095c17e874c5be03815f4c2145a256cf3a1d34dae4ab2f7769dfffe8` | [`{ type: "feedback/record" }`](#persistence-type-sha256-b54940ff095c17e874c5be03815f4c2145a256cf3a1d34dae4ab2f7769dfffe8) |
@@ -58,7 +58,7 @@ The [format references](persistence-changes/historical-formats/README.md) cover
 | `event:session-log-deepseek/delivery-accepted` | event | `d63b8b8ffad9c02fd80c43a17df4f240c1fe8118ecca9de34f9d5871838ab5b9` | [`{ type: "session-log-deepseek/delivery-accepted" }`](#persistence-type-sha256-d63b8b8ffad9c02fd80c43a17df4f240c1fe8118ecca9de34f9d5871838ab5b9) |
 | `event:session/end-seed` | event | `5e6db6e24948d4a853c71cb9fabd252ad051ce93d4672c1266cf837c1c17b84e` | [`{ type: "session/end-seed" }`](#persistence-type-sha256-5e6db6e24948d4a853c71cb9fabd252ad051ce93d4672c1266cf837c1c17b84e) |
 | `event:session/title` | event | `1b912703e2d64f91c99c675b8f805b01076c8325b905c1218ad81ef0b24909d5` | [`{ type: "session/title" }`](#persistence-type-sha256-1b912703e2d64f91c99c675b8f805b01076c8325b905c1218ad81ef0b24909d5) |
-| `event:session/title-llm-request` | event | `eaa9125aec0fb28478096c46e73e21bf512ab0d84d826bfb41e7308707734cb5` | [`{ type: "session/title-llm-request" }`](#persistence-type-sha256-eaa9125aec0fb28478096c46e73e21bf512ab0d84d826bfb41e7308707734cb5) |
+| `event:session/title-llm-request` | event | `2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c` | [`{ type: "session/title-llm-request" }`](#persistence-type-sha256-2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c) |
 | `event:step/end` | event | `e0a787e6ec76c7c94fecbc501b489164ab0293db05bc947914077ad01e674f05` | [`{ type: "step/end" }`](#persistence-type-sha256-e0a787e6ec76c7c94fecbc501b489164ab0293db05bc947914077ad01e674f05) |
 | `event:step/start` | event | `4513e088d43e6c68425be30451b9f961cc264fe7318ca62681c41d4d78615986` | [`{ type: "step/start" }`](#persistence-type-sha256-4513e088d43e6c68425be30451b9f961cc264fe7318ca62681c41d4d78615986) |
 | `event:subagent/catalog` | event | `53750b9abf61efb7992b0aadc3e247ec927449c63266df28230fd1139f5590ac` | [`{ type: "subagent/catalog" }`](#persistence-type-sha256-53750b9abf61efb7992b0aadc3e247ec927449c63266df28230fd1139f5590ac) |
@@ -80,7 +80,7 @@ The [format references](persistence-changes/historical-formats/README.md) cover
 | `event:tool/result` | event | `7c9f44e90a0058f4cc532ae20dad0c10afa6eba22e70a6c79fc79490bad64397` | [`{ type: "tool/result" }`](#persistence-type-sha256-7c9f44e90a0058f4cc532ae20dad0c10afa6eba22e70a6c79fc79490bad64397) |
 | `event:turn/end` | event | `0f8512903d94f57a4748fa1a2092e64342856796684e6b8343db685b192745ce` | [`{ type: "turn/end" }`](#persistence-type-sha256-0f8512903d94f57a4748fa1a2092e64342856796684e6b8343db685b192745ce) |
 | `event:turn/start` | event | `aa0957eca50aeb28bcd2e6930b95809926edacb550c8c340ba526ba6b861b3d8` | [`{ type: "turn/start" }`](#persistence-type-sha256-aa0957eca50aeb28bcd2e6930b95809926edacb550c8c340ba526ba6b861b3d8) |
-| `event:user/message` | event | `39adb7fce8475af6402acd925ea79697b3341c22422ac32833d71217d84e987f` | [`{ type: "user/message" }`](#persistence-type-sha256-39adb7fce8475af6402acd925ea79697b3341c22422ac32833d71217d84e987f) |
+| `event:user/message` | event | `5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451` | [`{ type: "user/message" }`](#persistence-type-sha256-5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451) |
 | `event:web/deepseek-search-llm-request` | event | `0c556c9b9f2a96238a6b9bbb99e748206cbff2ed6203041c9571f04ae5802f52` | [`{ type: "web/deepseek-search-llm-request" }`](#persistence-type-sha256-0c556c9b9f2a96238a6b9bbb99e748206cbff2ed6203041c9571f04ae5802f52) |
 | `event:working-directory/change` | event | `124aa62078ca3311353b39cc3bf6c75da281338be6bbf672f8b361d828cddca3` | [`{ type: "working-directory/change" }`](#persistence-type-sha256-124aa62078ca3311353b39cc3bf6c75da281338be6bbf672f8b361d828cddca3) |
 | `event:workspace/changes` | event | `e308ccf867a5398e316e0af8cb6ce238a8d33a63b9b384c8250a686786285f72` | [`{ type: "workspace/changes" }`](#persistence-type-sha256-e308ccf867a5398e316e0af8cb6ce238a8d33a63b9b384c8250a686786285f72) |
@@ -878,7 +878,7 @@ Source: [`packages/session/session-title/src/index.ts:77`](../packages/session/s
 
 Types: [SessionTitleLlmRequestEventData](subsystems/session-title.md)
 
-Source: [`packages/session/session-title-llm/src/index.ts:57`](../packages/session/session-title-llm/src/index.ts)
+Source: [`packages/session/session-title-llm/src/index.ts:63`](../packages/session/session-title-llm/src/index.ts)
 
 ### `session-log-deepseek/*`
 
@@ -898,7 +898,7 @@ Source: [`packages/session/session-title-llm/src/index.ts:57`](../packages/sessi
 }
 ```
 
-Source: [`packages/session/session-log-deepseek/src/types.ts:81`](../packages/session/session-log-deepseek/src/types.ts)
+Source: [`packages/session/session-log-deepseek/src/types.ts:96`](../packages/session/session-log-deepseek/src/types.ts)
 
 ### `step/*`
 
@@ -2539,6 +2539,14 @@ SHA-256: `b765ee31033cea463863faf3fc6a0a1b85c47c6a2f13fe1ce833abe56105114b`
 
 `"set"`
 
+<a id="persistence-type-sha256-6ba7edb6447b6a3e7947dddf5e4116c1526000c4e62882a6d65edc67ba797c2c"></a>
+
+### `"share-viewer"`
+
+SHA-256: `6ba7edb6447b6a3e7947dddf5e4116c1526000c4e62882a6d65edc67ba797c2c`
+
+`"share-viewer"`
+
 <a id="persistence-type-sha256-6ebcc2dbec9f2dabca9f668ae6d39e877899b180740570f453409db339221df3"></a>
 
 ### `"skill-catalog"`
@@ -3375,7 +3383,7 @@ Sources: [`packages/web/web-search-deepseek/src/provider.ts:55`](../packages/web
 | `body` | required | [`{ max_tokens, messages, model, thinking?, … }`](#persistence-type-sha256-9c001ecb5e1d3c3894410db2a1e383842e5f8454fb52182338686158abc1b3ee) |
 | `endpoint` | required | `string` |
 
-<a id="persistence-type-sha256-cebb7e9f3f663e660a531d9764ecfb9fa7fc73c22bf8d628f888e9ecf18c5cf0"></a>
+<a id="persistence-type-sha256-64ef542b1bfc988382d337f2ea85aab8ad76ea55341cf082163919d315688428"></a>
 
 <a id="persistence-type-developermessage"></a>
 
@@ -3383,7 +3391,7 @@ Sources: [`packages/web/web-search-deepseek/src/provider.ts:55`](../packages/web
 
 ### `DeveloperMessage`
 
-SHA-256: `cebb7e9f3f663e660a531d9764ecfb9fa7fc73c22bf8d628f888e9ecf18c5cf0`
+SHA-256: `64ef542b1bfc988382d337f2ea85aab8ad76ea55341cf082163919d315688428`
 
 Sources: [`packages/llm/llm/src/message.ts:157`](../packages/llm/llm/src/message.ts)
 
@@ -3392,7 +3400,7 @@ Sources: [`packages/llm/llm/src/message.ts:157`](../packages/llm/llm/src/message
 | `content` | required | [`ContentBlock[]`](#persistence-type-sha256-b52f215a6cd691058a3413c12f161fa3b563a2f4895adb3df6f744ec4b0a6ef1) |
 | `id` | required | `string` |
 | `role` | required | `"developer"` |
-| `source` | required | [`MessageSource`](#persistence-type-sha256-b112459dcb0686091c31ce6d213b2a4934b5ad19d37cc5b599e46f5a9d715591) |
+| `source` | required | [`MessageSource`](#persistence-type-sha256-7e9f1072c17f7aa86547c9c8b02766c1006d866a1859a3d677a336e932f70d1a) |
 
 Source compatibility: `source` — `session-source-attribution` v1; `session.developer-message.source`; `kind`; `preserve`.
 
@@ -4091,7 +4099,7 @@ Sources: [`packages/llm/llm-retry/src/types.ts:43`](../packages/llm/llm-retry/sr
 | `step` | required | `number` |
 | `turn` | required | `number` |
 
-<a id="persistence-type-sha256-4f9125fa028a56286fac70176ecc670d12f4402d8cbe112e14f0639f5e8e5c9d"></a>
+<a id="persistence-type-sha256-c78b9097bfae83cd08f0a98a92730236ba80ac61d712046959e4fc7f28aa1f36"></a>
 
 <a id="persistence-type-message"></a>
 
@@ -4099,15 +4107,15 @@ Sources: [`packages/llm/llm-retry/src/types.ts:43`](../packages/llm/llm-retry/sr
 
 ### `Message`
 
-SHA-256: `4f9125fa028a56286fac70176ecc670d12f4402d8cbe112e14f0639f5e8e5c9d`
+SHA-256: `c78b9097bfae83cd08f0a98a92730236ba80ac61d712046959e4fc7f28aa1f36`
 
 Sources: [`packages/llm/llm/src/message.ts:196`](../packages/llm/llm/src/message.ts)
 
 One of:
 
 - [`ToolResultMessage`](#persistence-type-sha256-4b259f7f8f0a44ad5e90b70a73553ced1df27012d126921d397ff403b6c86731)
-- [`DeveloperMessage`](#persistence-type-sha256-cebb7e9f3f663e660a531d9764ecfb9fa7fc73c22bf8d628f888e9ecf18c5cf0)
-- [`UserMessage`](#persistence-type-sha256-8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14)
+- [`DeveloperMessage`](#persistence-type-sha256-64ef542b1bfc988382d337f2ea85aab8ad76ea55341cf082163919d315688428)
+- [`UserMessage`](#persistence-type-sha256-4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce)
 - [`SystemMessage`](#persistence-type-sha256-09f3f8dc417f278257202714132f98ba7b52957d7b558c4a04456603890eb363)
 - [`AssistantMessage`](#persistence-type-sha256-fa87537f4a9c1e25602990a8bf686b383e9e00352ec8946e16ae24ba7c1625be)
 
@@ -4184,7 +4192,7 @@ One of:
 - `"negative"`
 - `"positive"`
 
-<a id="persistence-type-sha256-b112459dcb0686091c31ce6d213b2a4934b5ad19d37cc5b599e46f5a9d715591"></a>
+<a id="persistence-type-sha256-7e9f1072c17f7aa86547c9c8b02766c1006d866a1859a3d677a336e932f70d1a"></a>
 
 <a id="persistence-type-messagesource"></a>
 
@@ -4192,7 +4200,7 @@ One of:
 
 ### `MessageSource`
 
-SHA-256: `b112459dcb0686091c31ce6d213b2a4934b5ad19d37cc5b599e46f5a9d715591`
+SHA-256: `7e9f1072c17f7aa86547c9c8b02766c1006d866a1859a3d677a336e932f70d1a`
 
 Sources: [`packages/llm/llm/src/message.ts:136`](../packages/llm/llm/src/message.ts)
 
@@ -4304,7 +4312,7 @@ Sources: [`packages/llm/llm/src/message.ts:136`](../packages/llm/llm/src/message
 | `tool-jobs` | `"snapshot"` | `sections`: [`ContextSnapshotSection[]`](#persistence-type-sha256-c748fb42c80a120038a8c587af80ec39924803c401364db11c8974d5bf6d0262) | [`{ kind: "tool-jobs", form: "snapshot" }`](#persistence-type-sha256-c5228b7a55498d84f529591744a0ab26e0b93ade18a70a26db1377a1ecfa6b49) |
 | `tool-jobs` | not declared | none | [`{ kind: "tool-jobs" }`](#persistence-type-sha256-24ce31aa528272e59f21cd26da9eca08968bcc97529756a749bfdab71746d9c8) |
 | `tool-registry` | not declared | none | [`{ kind: "tool-registry" }`](#persistence-type-sha256-8fcb0b44a575e998665c053643d1ab04c82f39253ebd190ac0c975b78e40b543) |
-| `user` | not declared | `rpcId`: `string` | [`{ kind: "user" }`](#persistence-type-sha256-6dacb1584f2bfbe209dc6b6f578d51da6d55595f64d0e63c727c98f359278def) |
+| `user` | not declared | `rpcId`: `string` | [`{ kind: "user" }`](#persistence-type-sha256-a4afec59b75aad5d13ef82d6931f35cc2d98918503916cf069355b77c5e42302) |
 | `user` | not declared | none | [`CommandSource`](#persistence-type-sha256-ada310bf0bdb8fed51f3b56ea63f6ea6b18bbd587f04fccb63a14ab0b2a24e05) |
 | `user-approval` | `"catalog"` | none | [`{ kind: "user-approval", form: "catalog" }`](#persistence-type-sha256-825ca23416b1ea9d81442afead5cf9229a6fa05842f042135cc3aa9710a6a2d8) |
 | `user-approval` | `"instructions"` | none | [`{ kind: "user-approval", form: "instructions" }`](#persistence-type-sha256-aa2bf9e82b9fdeb94a42af20031fffa30e4e23f01f4ac39757427d4c64c407f0) |
@@ -4317,13 +4325,13 @@ Sources: [`packages/llm/llm/src/message.ts:136`](../packages/llm/llm/src/message
 | `webhook` | `"notice"` | `deliveryId`: `string`; `provider`: `string`; `ruleId`: `string`; `source`: `string`; `summary`: `string` | [`{ kind: "webhook", form: "notice" }`](#persistence-type-sha256-9edc162949abf93bd5ff049191b345454ba104f583937ce5580fb50f067d2b94) |
 | `working-directory` | not declared | none | [`{ kind: "working-directory" }`](#persistence-type-sha256-2235d957bf4b7c6cf959231d480f0ba1f3a6d72d82981493fb6c7c963021d3d5) |
 
-<a id="persistence-type-sha256-d2b617d9dfcc4e0a4b60732d8ba1effc632e3b75124b93b064c07814a0a716bc"></a>
+<a id="persistence-type-sha256-ff2cbb53582d1827b02622482246979942f59e07e0393b76a161251423549e72"></a>
 
 ### `Message[]`
 
-SHA-256: `d2b617d9dfcc4e0a4b60732d8ba1effc632e3b75124b93b064c07814a0a716bc`
+SHA-256: `ff2cbb53582d1827b02622482246979942f59e07e0393b76a161251423549e72`
 
-Array of [`Message`](#persistence-type-sha256-4f9125fa028a56286fac70176ecc670d12f4402d8cbe112e14f0639f5e8e5c9d).
+Array of [`Message`](#persistence-type-sha256-c78b9097bfae83cd08f0a98a92730236ba80ac61d712046959e4fc7f28aa1f36).
 
 <a id="persistence-type-sha256-719c51f67074f97034a6c94297fe1f4b5d3c8d392c57586dab732aa5398c7a91"></a>
 
@@ -4441,22 +4449,6 @@ SHA-256: `1d9cb3caa96100b18b1911fa3ff8c751ef6992971a03c5f4d9aefc1a0004a345`
 
 Array of [`PresentedFile`](#persistence-type-sha256-b8fc636a2121df9d8423c242e03c9d23b7ab7c6fdce00e45746932c60b730f97).
 
-<a id="persistence-type-sha256-deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5"></a>
-
-<a id="persistence-type-packagestypertprotocolsrctypestsprincipal"></a>
-
-<a id="persistence-type-principal"></a>
-
-### `Principal`
-
-SHA-256: `deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5`
-
-Sources: [`packages/typert/protocol/src/types.ts:457`](../packages/typert/protocol/src/types.ts) · [`packages/typert/protocol/src/types.ts:461`](../packages/typert/protocol/src/types.ts)
-
-| Property | Presence | Type |
-|---|---|---|
-| `kind` | required | `"owner"` |
-
 <a id="persistence-type-sha256-cef171adf021a1867d244618a3dbbaafc22beb17c7f3df3ee203393271c8c6f6"></a>
 
 <a id="persistence-type-packagescoretool-executor-ptcsrctypestsptcdispatcheventdata"></a>
@@ -4707,7 +4699,7 @@ Sources: [`packages/session/session-title/src/types.ts:41`](../packages/session/
 | `source` | required | [`SessionTitleSource`](#persistence-type-sha256-30d5a537b296685770b1241c4b4bbde19d5a31ff81aa23df73fab5e90b8fc65f) |
 | `title` | required | `string` |
 
-<a id="persistence-type-sha256-9808c3d0f0a1be8fe313b4148ba22c691c4d59bd2c67aef3c63cfe8043148c5f"></a>
+<a id="persistence-type-sha256-7ff62f6599c083ceb5a0d7a8940ff85ba80dc1d7ddd6ba9339903e93f74cba54"></a>
 
 <a id="persistence-type-packagessessionsession-title-llmsrcindextssessiontitlellmrequesteventdata"></a>
 
@@ -4715,15 +4707,15 @@ Sources: [`packages/session/session-title/src/types.ts:41`](../packages/session/
 
 ### `SessionTitleLlmRequestEventData`
 
-SHA-256: `9808c3d0f0a1be8fe313b4148ba22c691c4d59bd2c67aef3c63cfe8043148c5f`
+SHA-256: `7ff62f6599c083ceb5a0d7a8940ff85ba80dc1d7ddd6ba9339903e93f74cba54`
 
-Sources: [`packages/session/session-title-llm/src/index.ts:37`](../packages/session/session-title-llm/src/index.ts)
+Sources: [`packages/session/session-title-llm/src/index.ts:43`](../packages/session/session-title-llm/src/index.ts)
 
 | Property | Presence | Type |
 |---|---|---|
 | `maxTokens` | required | `number` |
 | `messageSeqs` | required | [`number[]`](#persistence-type-sha256-5d03ba38734809bcbd2a55221bd938b3b3fc34b49bb686c6113e9e4931e3aa78) |
-| `messages` | required | [`Message[]`](#persistence-type-sha256-d2b617d9dfcc4e0a4b60732d8ba1effc632e3b75124b93b064c07814a0a716bc) |
+| `messages` | required | [`Message[]`](#persistence-type-sha256-ff2cbb53582d1827b02622482246979942f59e07e0393b76a161251423549e72) |
 | `reasoningEffort` | optional | `string` |
 | `route` | required | [`SessionTitleModelIdentity`](#persistence-type-sha256-07e1a58c58b593f507b8e7f25723bb0aa42baae6e00f5ecfddf28cb1e64d3235) |
 | `system` | required | `string` |
@@ -4776,6 +4768,24 @@ Sources: [`packages/session/session-title/src/types.ts:28`](../packages/session/
 | `provider` | not declared | `provider`: `string` | [`{ kind: "provider" }`](#persistence-type-sha256-b81e9de81a481b24e1e1f9adf038bfc59e57b4f35ce62f8f1e45284186f4f812) |
 | `user` | not declared | none | [`CommandSource`](#persistence-type-sha256-ada310bf0bdb8fed51f3b56ea63f6ea6b18bbd587f04fccb63a14ab0b2a24e05) |
 
+<a id="persistence-type-sha256-4d60dddaa65d3da8d4cd014d85ce3d2c2875664dd0433e331d8e9d395289686b"></a>
+
+<a id="persistence-type-packagesexperimentallivesharesrchostviewer-principaltsshareviewerprincipal"></a>
+
+<a id="persistence-type-shareviewerprincipal"></a>
+
+### `ShareViewerPrincipal`
+
+SHA-256: `4d60dddaa65d3da8d4cd014d85ce3d2c2875664dd0433e331d8e9d395289686b`
+
+Sources: [`packages/experimental/liveshare/src/host/viewer-principal.ts:24`](../packages/experimental/liveshare/src/host/viewer-principal.ts)
+
+| Property | Presence | Type |
+|---|---|---|
+| `actor` | required | [`{ displayName?, providerId, subjectId, tenantId }`](#persistence-type-sha256-0a92c5bdfa06c2e2615b777728f3aa95f408d43b9012e7b754568311251db623) |
+| `kind` | required | `"share-viewer"` |
+| `shareId` | required | `string` |
+
 <a id="persistence-type-sha256-65d583e66518c5236015e0846470fb32efcf92375ed306aef14e50a9d2cd2099"></a>
 
 <a id="persistence-type-packagesskilltool-skillsrcindextsskillcatalogsource"></a>
@@ -5380,7 +5390,7 @@ Sources: [`packages/core/session/src/types.ts:238`](../packages/core/session/src
 | `interrupted` | not declared | none | [`{ kind: "interrupted" }`](#persistence-type-sha256-56b7c047694875a843ba020dfea3c8380d54ae4ff88ab349e72004dc21e07c23) |
 | `max-tokens` | not declared | none | [`{ kind: "max-tokens" }`](#persistence-type-sha256-ab7ec5f9eb2c6dfacca5da4c37cf7ba85d04172053ee6b1ebf1709ffcd99c1a7) |
 
-<a id="persistence-type-sha256-8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14"></a>
+<a id="persistence-type-sha256-4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce"></a>
 
 <a id="persistence-type-packagesllmllmsrcmessagetsusermessage"></a>
 
@@ -5388,7 +5398,7 @@ Sources: [`packages/core/session/src/types.ts:238`](../packages/core/session/src
 
 ### `UserMessage`
 
-SHA-256: `8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14`
+SHA-256: `4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce`
 
 Sources: [`packages/llm/llm/src/message.ts:162`](../packages/llm/llm/src/message.ts)
 
@@ -5397,19 +5407,19 @@ Sources: [`packages/llm/llm/src/message.ts:162`](../packages/llm/llm/src/message
 | `content` | required | [`ContentBlock[]`](#persistence-type-sha256-b52f215a6cd691058a3413c12f161fa3b563a2f4895adb3df6f744ec4b0a6ef1) |
 | `id` | required | `string` |
 | `role` | required | `"user"` |
-| `source` | required | [`MessageSource`](#persistence-type-sha256-b112459dcb0686091c31ce6d213b2a4934b5ad19d37cc5b599e46f5a9d715591) |
+| `source` | required | [`MessageSource`](#persistence-type-sha256-7e9f1072c17f7aa86547c9c8b02766c1006d866a1859a3d677a336e932f70d1a) |
 
 Source compatibility: `source` — `session-source-attribution` v1; `session.user-message.source`; `kind`; `preserve`.
 
 Attribution-only additions: `action-cards`, `tmux-context`, `user-question-reply`, `working-directory`.
 
-<a id="persistence-type-sha256-aada2771a250136cc3a839b0507e9c6502622a2897716903942297bcb6661292"></a>
+<a id="persistence-type-sha256-7c203f3d4dfa6638ff2601247cc7ca5d46731d2c614aa61217475b9eb1fbd0b3"></a>
 
 ### `UserMessage[]`
 
-SHA-256: `aada2771a250136cc3a839b0507e9c6502622a2897716903942297bcb6661292`
+SHA-256: `7c203f3d4dfa6638ff2601247cc7ca5d46731d2c614aa61217475b9eb1fbd0b3`
 
-Array of [`UserMessage`](#persistence-type-sha256-8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14).
+Array of [`UserMessage`](#persistence-type-sha256-4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce).
 
 <a id="persistence-type-sha256-c2deb7c9183735d4e0fffddf5c623f4e34daa1c8e96b111982e957dfcbbcf896"></a>
 
@@ -5673,6 +5683,17 @@ One of:
 - `"fork"`
 - `"fresh"`
 
+<a id="persistence-type-sha256-824a4aad44a54e245c67196817d67946734a2dc0eee0b0b6834a5b2a6ef352ce"></a>
+
+### `union (2 variants)`
+
+SHA-256: `824a4aad44a54e245c67196817d67946734a2dc0eee0b0b6834a5b2a6ef352ce`
+
+| kind | Form property | Other required fields | Full definition |
+|---|---|---|---|
+| `owner` | not declared | none | [`{ kind: "owner" }`](#persistence-type-sha256-deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5) |
+| `share-viewer` | not declared | `actor`: [`{ displayName?, providerId, subjectId, tenantId }`](#persistence-type-sha256-0a92c5bdfa06c2e2615b777728f3aa95f408d43b9012e7b754568311251db623); `shareId`: `string` | [`ShareViewerPrincipal`](#persistence-type-sha256-4d60dddaa65d3da8d4cd014d85ce3d2c2875664dd0433e331d8e9d395289686b) |
+
 <a id="persistence-type-sha256-9947aa5938fe19a895298da412917acbf9ffb5093a73ab8baa257e6ae9e63a07"></a>
 
 ### `union (2 variants)`
@@ -6198,6 +6219,21 @@ Sources: [`packages/experimental/hook-protocol/src/types.ts:19`](../packages/exp
 | `point` | required | `string` |
 | `turn` | required | `number` |
 
+<a id="persistence-type-sha256-0a92c5bdfa06c2e2615b777728f3aa95f408d43b9012e7b754568311251db623"></a>
+
+### `{ displayName?, providerId, subjectId, tenantId }`
+
+SHA-256: `0a92c5bdfa06c2e2615b777728f3aa95f408d43b9012e7b754568311251db623`
+
+Sources: [`packages/experimental/liveshare/src/host/viewer-principal.ts:29`](../packages/experimental/liveshare/src/host/viewer-principal.ts)
+
+| Property | Presence | Type |
+|---|---|---|
+| `displayName` | optional | `string` |
+| `providerId` | required | `string` |
+| `subjectId` | required | `string` |
+| `tenantId` | required | `string` |
+
 <a id="persistence-type-sha256-9e41386b3a0c9572b0d63078492ebb3997da7d3a830d44e0259418bd02f4bcb2"></a>
 
 ### `{ end, start }`
@@ -6294,18 +6330,18 @@ Sources: [`packages/core/session/src/types.ts:398`](../packages/core/session/src
 | `reason` | required | [`RequestHeaderReason`](#persistence-type-sha256-530da6c0267813bb4511af72883cc518834e624e3b3220a7062955fd57a788a6) |
 | `startsSeries` | optional | `true` |
 
-<a id="persistence-type-sha256-12f9a5a7506bca46d6ef8e3c71826c4bf40e1389bfe0236cfffaea0c3fb367d2"></a>
+<a id="persistence-type-sha256-53d4f8256bc58109468ea358ac54d437760cd765012360cafe72a401e6a41d4a"></a>
 
 ### `{ headerSeq?, message, step, turn }`
 
-SHA-256: `12f9a5a7506bca46d6ef8e3c71826c4bf40e1389bfe0236cfffaea0c3fb367d2`
+SHA-256: `53d4f8256bc58109468ea358ac54d437760cd765012360cafe72a401e6a41d4a`
 
 Sources: [`packages/core/session/src/types.ts:317`](../packages/core/session/src/types.ts)
 
 | Property | Presence | Type |
 |---|---|---|
 | `headerSeq` | optional | `number` |
-| `message` | required | [`DeveloperMessage`](#persistence-type-sha256-cebb7e9f3f663e660a531d9764ecfb9fa7fc73c22bf8d628f888e9ecf18c5cf0) |
+| `message` | required | [`DeveloperMessage`](#persistence-type-sha256-64ef542b1bfc988382d337f2ea85aab8ad76ea55341cf082163919d315688428) |
 | `step` | required | `number` |
 | `turn` | required | `number` |
 
@@ -6389,17 +6425,17 @@ Sources: [`packages/core/session/src/types.ts:435`](../packages/core/session/src
 |---|---|---|
 | `inherited` | optional | `true` |
 
-<a id="persistence-type-sha256-c433ef580a5b229bbe68274a7164aa3a8e8040d7217f010b610ca0696a84253c"></a>
+<a id="persistence-type-sha256-d4d960185026266ed7bd127be1e252234689e8b4890c7c2677a644ba58f35401"></a>
 
 ### `{ inserted, outcome?, removedCount?, start, … }`
 
-SHA-256: `c433ef580a5b229bbe68274a7164aa3a8e8040d7217f010b610ca0696a84253c`
+SHA-256: `d4d960185026266ed7bd127be1e252234689e8b4890c7c2677a644ba58f35401`
 
 Sources: [`packages/core/agent/src/types.ts:110`](../packages/core/agent/src/types.ts)
 
 | Property | Presence | Type |
 |---|---|---|
-| `inserted` | required | [`UserMessage[]`](#persistence-type-sha256-aada2771a250136cc3a839b0507e9c6502622a2897716903942297bcb6661292) |
+| `inserted` | required | [`UserMessage[]`](#persistence-type-sha256-7c203f3d4dfa6638ff2601247cc7ca5d46731d2c614aa61217475b9eb1fbd0b3) |
 | `outcome` | optional | `"canceled"` |
 | `removedCount` | optional | `number` |
 | `start` | required | `number` |
@@ -6953,6 +6989,18 @@ SHA-256: `52c6113cb0e53f345324bf84f01928bea5d5df57ee80bc0dd65407b8bc5a3734`
 | `kind` | required | `"model-selection"` |
 | `sections` | required | [`ContextSnapshotSection[]`](#persistence-type-sha256-c748fb42c80a120038a8c587af80ec39924803c401364db11c8974d5bf6d0262) |
 
+<a id="persistence-type-sha256-deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5"></a>
+
+### `{ kind: "owner" }`
+
+SHA-256: `deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5`
+
+Sources: [`packages/typert/protocol/src/types.ts:457`](../packages/typert/protocol/src/types.ts)
+
+| Property | Presence | Type |
+|---|---|---|
+| `kind` | required | `"owner"` |
+
 <a id="persistence-type-sha256-6c03546143cdf6ae88f1745ac98c5139efa1588d1415249bbc5f3104d32ab800"></a>
 
 ### `{ kind: "parent" }`
@@ -7651,11 +7699,11 @@ Sources: [`packages/core/tools/src/index.ts:28`](../packages/core/tools/src/inde
 |---|---|---|
 | `kind` | required | `"tool-registry"` |
 
-<a id="persistence-type-sha256-6dacb1584f2bfbe209dc6b6f578d51da6d55595f64d0e63c727c98f359278def"></a>
+<a id="persistence-type-sha256-a4afec59b75aad5d13ef82d6931f35cc2d98918503916cf069355b77c5e42302"></a>
 
 ### `{ kind: "user" }`
 
-SHA-256: `6dacb1584f2bfbe209dc6b6f578d51da6d55595f64d0e63c727c98f359278def`
+SHA-256: `a4afec59b75aad5d13ef82d6931f35cc2d98918503916cf069355b77c5e42302`
 
 Sources: [`packages/api/session-controller/src/types.ts:397`](../packages/api/session-controller/src/types.ts)
 
@@ -7663,7 +7711,7 @@ Sources: [`packages/api/session-controller/src/types.ts:397`](../packages/api/se
 |---|---|---|
 | `clientTimeZone` | optional | `string` |
 | `kind` | required | `"user"` |
-| `principal` | optional | [`Principal`](#persistence-type-sha256-deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5) |
+| `principal` | optional | [`union (2 variants)`](#persistence-type-sha256-824a4aad44a54e245c67196817d67946734a2dc0eee0b0b6834a5b2a6ef352ce) |
 | `rpcId` | required | `string` |
 
 <a id="persistence-type-sha256-6292bcbedaa97feaec5b48a03bb8144b581b93309d9d6c905f26da7a6a7a0a4f"></a>
@@ -7931,7 +7979,7 @@ Sources: [`packages/web/web-search-deepseek/src/provider.ts:64`](../packages/web
 
 SHA-256: `8bb8c3751a6ce64b61aba1ec7ae798c00a5803c4d868a0430873216c6569ed52`
 
-Sources: [`packages/session/session-log-deepseek/src/types.ts:81`](../packages/session/session-log-deepseek/src/types.ts)
+Sources: [`packages/session/session-log-deepseek/src/types.ts:96`](../packages/session/session-log-deepseek/src/types.ts)
 
 | Property | Presence | Type |
 |---|---|---|
@@ -8046,17 +8094,17 @@ SHA-256: `a10c17474eaf2ddab7095a099e0fe3d046fc18e56c3e344fc8894c05ff9ef97b`
 | `time` | required | `number` |
 | `type` | required | `"agent-preset/selected"` |
 
-<a id="persistence-type-sha256-9e8043098fb89db6d7c92a92c70146c5c8d24fa88f733c687fa29e5e7a58ab30"></a>
+<a id="persistence-type-sha256-cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e"></a>
 
 <a id="persistence-type-eventagentinboxspliced"></a>
 
 ### `{ type: "agent/inbox/spliced" }`
 
-SHA-256: `9e8043098fb89db6d7c92a92c70146c5c8d24fa88f733c687fa29e5e7a58ab30`
+SHA-256: `cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e`
 
 | Property | Presence | Type |
 |---|---|---|
-| `data` | required | [`{ inserted, outcome?, removedCount?, start, … }`](#persistence-type-sha256-c433ef580a5b229bbe68274a7164aa3a8e8040d7217f010b610ca0696a84253c) |
+| `data` | required | [`{ inserted, outcome?, removedCount?, start, … }`](#persistence-type-sha256-d4d960185026266ed7bd127be1e252234689e8b4890c7c2677a644ba58f35401) |
 | `ignorable` | optional | `true` |
 | `seq` | required | `number` |
 | `time` | required | `number` |
@@ -8297,17 +8345,17 @@ SHA-256: `13d3d180f977bf78081d487ffa0ecb75857349bcab29a5a3fb48189fca2a6176`
 | `time` | required | `number` |
 | `type` | required | `"deliverables/presented"` |
 
-<a id="persistence-type-sha256-95acdbd066cf445d37092e5fdfe2e8717ef6ca1aed50f70e2e6037a6989a1f2f"></a>
+<a id="persistence-type-sha256-70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f"></a>
 
 <a id="persistence-type-eventdevelopermessage"></a>
 
 ### `{ type: "developer/message" }`
 
-SHA-256: `95acdbd066cf445d37092e5fdfe2e8717ef6ca1aed50f70e2e6037a6989a1f2f`
+SHA-256: `70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f`
 
 | Property | Presence | Type |
 |---|---|---|
-| `data` | required | [`{ headerSeq?, message, step, turn }`](#persistence-type-sha256-12f9a5a7506bca46d6ef8e3c71826c4bf40e1389bfe0236cfffaea0c3fb367d2) |
+| `data` | required | [`{ headerSeq?, message, step, turn }`](#persistence-type-sha256-53d4f8256bc58109468ea358ac54d437760cd765012360cafe72a401e6a41d4a) |
 | `ignorable` | optional | `true` |
 | `seq` | required | `number` |
 | `sourceEventSeqs` | optional | [`number[]`](#persistence-type-sha256-5d03ba38734809bcbd2a55221bd938b3b3fc34b49bb686c6113e9e4931e3aa78) |
@@ -8707,17 +8755,17 @@ SHA-256: `1b912703e2d64f91c99c675b8f805b01076c8325b905c1218ad81ef0b24909d5`
 | `time` | required | `number` |
 | `type` | required | `"session/title"` |
 
-<a id="persistence-type-sha256-eaa9125aec0fb28478096c46e73e21bf512ab0d84d826bfb41e7308707734cb5"></a>
+<a id="persistence-type-sha256-2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c"></a>
 
 <a id="persistence-type-eventsessiontitle-llm-request"></a>
 
 ### `{ type: "session/title-llm-request" }`
 
-SHA-256: `eaa9125aec0fb28478096c46e73e21bf512ab0d84d826bfb41e7308707734cb5`
+SHA-256: `2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c`
 
 | Property | Presence | Type |
 |---|---|---|
-| `data` | required | [`SessionTitleLlmRequestEventData`](#persistence-type-sha256-9808c3d0f0a1be8fe313b4148ba22c691c4d59bd2c67aef3c63cfe8043148c5f) |
+| `data` | required | [`SessionTitleLlmRequestEventData`](#persistence-type-sha256-7ff62f6599c083ceb5a0d7a8940ff85ba80dc1d7ddd6ba9339903e93f74cba54) |
 | `ignorable` | optional | `true` |
 | `seq` | required | `number` |
 | `time` | required | `number` |
@@ -9140,17 +9188,17 @@ Sources: [`packages/llm/llm/src/types.ts:502`](../packages/llm/llm/src/types.ts)
 | `type` | required | `"usage"` |
 | `usage` | required | [`TokenUsage`](#persistence-type-sha256-fec5442b9ee4122e10514d81d5a43648003fe8bfb7ee2ba50c0cdbdd383ed394) |
 
-<a id="persistence-type-sha256-39adb7fce8475af6402acd925ea79697b3341c22422ac32833d71217d84e987f"></a>
+<a id="persistence-type-sha256-5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451"></a>
 
 <a id="persistence-type-eventusermessage"></a>
 
 ### `{ type: "user/message" }`
 
-SHA-256: `39adb7fce8475af6402acd925ea79697b3341c22422ac32833d71217d84e987f`
+SHA-256: `5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451`
 
 | Property | Presence | Type |
 |---|---|---|
-| `data` | required | [`UserMessage`](#persistence-type-sha256-8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14) |
+| `data` | required | [`UserMessage`](#persistence-type-sha256-4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce) |
 | `ignorable` | optional | `true` |
 | `seq` | required | `number` |
 | `sourceEventSeqs` | optional | [`number[]`](#persistence-type-sha256-5d03ba38734809bcbd2a55221bd938b3b3fc34b49bb686c6113e9e4931e3aa78) |
diff --git a/docs/persistence-catalog.zh.md b/docs/persistence-catalog.zh.md
index f46e8ed471..c890b50507 100644
--- a/docs/persistence-catalog.zh.md
+++ b/docs/persistence-catalog.zh.md
@@ -25,7 +25,7 @@
 | `JsonlHeaderLine` | header | `18ee62b8900a4c3d046700f05d7a4d49d6cab2a660a020c87481d1603dd8bd4f` | [`HeaderLine`](#persistence-type-sha256-18ee62b8900a4c3d046700f05d7a4d49d6cab2a660a020c87481d1603dd8bd4f) |
 | `SessionEventEnvelope` | envelope | `5776e5553ff2dfe3f5bc202dbb1e7c9f93e35a531aebb7764c23b2b6153b2ccc` | [`union (3 variants)`](#persistence-type-sha256-5776e5553ff2dfe3f5bc202dbb1e7c9f93e35a531aebb7764c23b2b6153b2ccc) |
 | `event:agent-preset/selected` | event | `a10c17474eaf2ddab7095a099e0fe3d046fc18e56c3e344fc8894c05ff9ef97b` | [`{ type: "agent-preset/selected" }`](#persistence-type-sha256-a10c17474eaf2ddab7095a099e0fe3d046fc18e56c3e344fc8894c05ff9ef97b) |
-| `event:agent/inbox/spliced` | event | `9e8043098fb89db6d7c92a92c70146c5c8d24fa88f733c687fa29e5e7a58ab30` | [`{ type: "agent/inbox/spliced" }`](#persistence-type-sha256-9e8043098fb89db6d7c92a92c70146c5c8d24fa88f733c687fa29e5e7a58ab30) |
+| `event:agent/inbox/spliced` | event | `cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e` | [`{ type: "agent/inbox/spliced" }`](#persistence-type-sha256-cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e) |
 | `event:approval/asked` | event | `3bfeb47b58606f4661904bc723da612782214c463d01e6d61cd6d6193d7374e1` | [`{ type: "approval/asked" }`](#persistence-type-sha256-3bfeb47b58606f4661904bc723da612782214c463d01e6d61cd6d6193d7374e1) |
 | `event:approval/decided` | event | `bb1ab3d08f49a9f3b265f844cd78d5c49813062a7b34b54904b426f85d0ff6e3` | [`{ type: "approval/decided" }`](#persistence-type-sha256-bb1ab3d08f49a9f3b265f844cd78d5c49813062a7b34b54904b426f85d0ff6e3) |
 | `event:approval/policy` | event | `26718e15e7e395bce9642dba5bbe09b3b1a4ce2213d20d566cd9207d7fc5fb78` | [`{ type: "approval/policy" }`](#persistence-type-sha256-26718e15e7e395bce9642dba5bbe09b3b1a4ce2213d20d566cd9207d7fc5fb78) |
@@ -38,7 +38,7 @@
 | `event:compaction/start` | event | `db874d463b0fdec77e9da1c4568f37cb70bd6596781eb93800db44fb8a116965` | [`{ type: "compaction/start" }`](#persistence-type-sha256-db874d463b0fdec77e9da1c4568f37cb70bd6596781eb93800db44fb8a116965) |
 | `event:compaction/summary` | event | `e2f9a41e0989f54ed8cee80f8db2bcf9d60a5c810dc9d45b83fa050b9dce7602` | [`{ type: "compaction/summary" }`](#persistence-type-sha256-e2f9a41e0989f54ed8cee80f8db2bcf9d60a5c810dc9d45b83fa050b9dce7602) |
 | `event:deliverables/presented` | event | `13d3d180f977bf78081d487ffa0ecb75857349bcab29a5a3fb48189fca2a6176` | [`{ type: "deliverables/presented" }`](#persistence-type-sha256-13d3d180f977bf78081d487ffa0ecb75857349bcab29a5a3fb48189fca2a6176) |
-| `event:developer/message` | event | `95acdbd066cf445d37092e5fdfe2e8717ef6ca1aed50f70e2e6037a6989a1f2f` | [`{ type: "developer/message" }`](#persistence-type-sha256-95acdbd066cf445d37092e5fdfe2e8717ef6ca1aed50f70e2e6037a6989a1f2f) |
+| `event:developer/message` | event | `70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f` | [`{ type: "developer/message" }`](#persistence-type-sha256-70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f) |
 | `event:feedback/message-delete` | event | `3ee93b06f3a125850337602bcdf155d2538c43a5c944ec55b1b3c365152d6796` | [`{ type: "feedback/message-delete" }`](#persistence-type-sha256-3ee93b06f3a125850337602bcdf155d2538c43a5c944ec55b1b3c365152d6796) |
 | `event:feedback/message-put` | event | `b5086d249e8502e9ead1d39156bb8d559bde7951cac0f14ce150345b4e42a2bf` | [`{ type: "feedback/message-put" }`](#persistence-type-sha256-b5086d249e8502e9ead1d39156bb8d559bde7951cac0f14ce150345b4e42a2bf) |
 | `event:feedback/record` | event | `b54940ff095c17e874c5be03815f4c2145a256cf3a1d34dae4ab2f7769dfffe8` | [`{ type: "feedback/record" }`](#persistence-type-sha256-b54940ff095c17e874c5be03815f4c2145a256cf3a1d34dae4ab2f7769dfffe8) |
@@ -60,7 +60,7 @@
 | `event:session-log-deepseek/delivery-accepted` | event | `d63b8b8ffad9c02fd80c43a17df4f240c1fe8118ecca9de34f9d5871838ab5b9` | [`{ type: "session-log-deepseek/delivery-accepted" }`](#persistence-type-sha256-d63b8b8ffad9c02fd80c43a17df4f240c1fe8118ecca9de34f9d5871838ab5b9) |
 | `event:session/end-seed` | event | `5e6db6e24948d4a853c71cb9fabd252ad051ce93d4672c1266cf837c1c17b84e` | [`{ type: "session/end-seed" }`](#persistence-type-sha256-5e6db6e24948d4a853c71cb9fabd252ad051ce93d4672c1266cf837c1c17b84e) |
 | `event:session/title` | event | `1b912703e2d64f91c99c675b8f805b01076c8325b905c1218ad81ef0b24909d5` | [`{ type: "session/title" }`](#persistence-type-sha256-1b912703e2d64f91c99c675b8f805b01076c8325b905c1218ad81ef0b24909d5) |
-| `event:session/title-llm-request` | event | `eaa9125aec0fb28478096c46e73e21bf512ab0d84d826bfb41e7308707734cb5` | [`{ type: "session/title-llm-request" }`](#persistence-type-sha256-eaa9125aec0fb28478096c46e73e21bf512ab0d84d826bfb41e7308707734cb5) |
+| `event:session/title-llm-request` | event | `2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c` | [`{ type: "session/title-llm-request" }`](#persistence-type-sha256-2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c) |
 | `event:step/end` | event | `e0a787e6ec76c7c94fecbc501b489164ab0293db05bc947914077ad01e674f05` | [`{ type: "step/end" }`](#persistence-type-sha256-e0a787e6ec76c7c94fecbc501b489164ab0293db05bc947914077ad01e674f05) |
 | `event:step/start` | event | `4513e088d43e6c68425be30451b9f961cc264fe7318ca62681c41d4d78615986` | [`{ type: "step/start" }`](#persistence-type-sha256-4513e088d43e6c68425be30451b9f961cc264fe7318ca62681c41d4d78615986) |
 | `event:subagent/catalog` | event | `53750b9abf61efb7992b0aadc3e247ec927449c63266df28230fd1139f5590ac` | [`{ type: "subagent/catalog" }`](#persistence-type-sha256-53750b9abf61efb7992b0aadc3e247ec927449c63266df28230fd1139f5590ac) |
@@ -82,7 +82,7 @@
 | `event:tool/result` | event | `7c9f44e90a0058f4cc532ae20dad0c10afa6eba22e70a6c79fc79490bad64397` | [`{ type: "tool/result" }`](#persistence-type-sha256-7c9f44e90a0058f4cc532ae20dad0c10afa6eba22e70a6c79fc79490bad64397) |
 | `event:turn/end` | event | `0f8512903d94f57a4748fa1a2092e64342856796684e6b8343db685b192745ce` | [`{ type: "turn/end" }`](#persistence-type-sha256-0f8512903d94f57a4748fa1a2092e64342856796684e6b8343db685b192745ce) |
 | `event:turn/start` | event | `aa0957eca50aeb28bcd2e6930b95809926edacb550c8c340ba526ba6b861b3d8` | [`{ type: "turn/start" }`](#persistence-type-sha256-aa0957eca50aeb28bcd2e6930b95809926edacb550c8c340ba526ba6b861b3d8) |
-| `event:user/message` | event | `39adb7fce8475af6402acd925ea79697b3341c22422ac32833d71217d84e987f` | [`{ type: "user/message" }`](#persistence-type-sha256-39adb7fce8475af6402acd925ea79697b3341c22422ac32833d71217d84e987f) |
+| `event:user/message` | event | `5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451` | [`{ type: "user/message" }`](#persistence-type-sha256-5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451) |
 | `event:web/deepseek-search-llm-request` | event | `0c556c9b9f2a96238a6b9bbb99e748206cbff2ed6203041c9571f04ae5802f52` | [`{ type: "web/deepseek-search-llm-request" }`](#persistence-type-sha256-0c556c9b9f2a96238a6b9bbb99e748206cbff2ed6203041c9571f04ae5802f52) |
 | `event:working-directory/change` | event | `124aa62078ca3311353b39cc3bf6c75da281338be6bbf672f8b361d828cddca3` | [`{ type: "working-directory/change" }`](#persistence-type-sha256-124aa62078ca3311353b39cc3bf6c75da281338be6bbf672f8b361d828cddca3) |
 | `event:workspace/changes` | event | `e308ccf867a5398e316e0af8cb6ce238a8d33a63b9b384c8250a686786285f72` | [`{ type: "workspace/changes" }`](#persistence-type-sha256-e308ccf867a5398e316e0af8cb6ce238a8d33a63b9b384c8250a686786285f72) |
@@ -880,7 +880,7 @@ export type SessionEvent<T extends SessionEventType = SessionEventType> = {
 
 类型：[SessionTitleLlmRequestEventData](subsystems/session-title.zh.md)
 
-来源：[`packages/session/session-title-llm/src/index.ts:57`](../packages/session/session-title-llm/src/index.ts)
+来源：[`packages/session/session-title-llm/src/index.ts:63`](../packages/session/session-title-llm/src/index.ts)
 
 ### `session-log-deepseek/*`
 
@@ -900,7 +900,7 @@ export type SessionEvent<T extends SessionEventType = SessionEventType> = {
 }
 ```
 
-来源：[`packages/session/session-log-deepseek/src/types.ts:81`](../packages/session/session-log-deepseek/src/types.ts)
+来源：[`packages/session/session-log-deepseek/src/types.ts:96`](../packages/session/session-log-deepseek/src/types.ts)
 
 ### `step/*`
 
@@ -2541,6 +2541,14 @@ SHA-256: `b765ee31033cea463863faf3fc6a0a1b85c47c6a2f13fe1ce833abe56105114b`
 
 `"set"`
 
+<a id="persistence-type-sha256-6ba7edb6447b6a3e7947dddf5e4116c1526000c4e62882a6d65edc67ba797c2c"></a>
+
+### `"share-viewer"`
+
+SHA-256: `6ba7edb6447b6a3e7947dddf5e4116c1526000c4e62882a6d65edc67ba797c2c`
+
+`"share-viewer"`
+
 <a id="persistence-type-sha256-6ebcc2dbec9f2dabca9f668ae6d39e877899b180740570f453409db339221df3"></a>
 
 ### `"skill-catalog"`
@@ -3377,7 +3385,7 @@ SHA-256: `abd6ca62a5ab166553848324a23fef90eed7f59c8021bd63e7ea5bc6fd666b0c`
 | `body` | 必需 | [`{ max_tokens, messages, model, thinking?, … }`](#persistence-type-sha256-9c001ecb5e1d3c3894410db2a1e383842e5f8454fb52182338686158abc1b3ee) |
 | `endpoint` | 必需 | `string` |
 
-<a id="persistence-type-sha256-cebb7e9f3f663e660a531d9764ecfb9fa7fc73c22bf8d628f888e9ecf18c5cf0"></a>
+<a id="persistence-type-sha256-64ef542b1bfc988382d337f2ea85aab8ad76ea55341cf082163919d315688428"></a>
 
 <a id="persistence-type-developermessage"></a>
 
@@ -3385,7 +3393,7 @@ SHA-256: `abd6ca62a5ab166553848324a23fef90eed7f59c8021bd63e7ea5bc6fd666b0c`
 
 ### `DeveloperMessage`
 
-SHA-256: `cebb7e9f3f663e660a531d9764ecfb9fa7fc73c22bf8d628f888e9ecf18c5cf0`
+SHA-256: `64ef542b1bfc988382d337f2ea85aab8ad76ea55341cf082163919d315688428`
 
 来源：[`packages/llm/llm/src/message.ts:157`](../packages/llm/llm/src/message.ts)
 
@@ -3394,7 +3402,7 @@ SHA-256: `cebb7e9f3f663e660a531d9764ecfb9fa7fc73c22bf8d628f888e9ecf18c5cf0`
 | `content` | 必需 | [`ContentBlock[]`](#persistence-type-sha256-b52f215a6cd691058a3413c12f161fa3b563a2f4895adb3df6f744ec4b0a6ef1) |
 | `id` | 必需 | `string` |
 | `role` | 必需 | `"developer"` |
-| `source` | 必需 | [`MessageSource`](#persistence-type-sha256-b112459dcb0686091c31ce6d213b2a4934b5ad19d37cc5b599e46f5a9d715591) |
+| `source` | 必需 | [`MessageSource`](#persistence-type-sha256-7e9f1072c17f7aa86547c9c8b02766c1006d866a1859a3d677a336e932f70d1a) |
 
 消息源兼容策略：`source` — `session-source-attribution` v1; `session.developer-message.source`; `kind`; `preserve`.
 
@@ -4093,7 +4101,7 @@ SHA-256: `6f72ece8f317cd080c4f20a93f1bf709965f5b81ac4669528f5a023191cfcf20`
 | `step` | 必需 | `number` |
 | `turn` | 必需 | `number` |
 
-<a id="persistence-type-sha256-4f9125fa028a56286fac70176ecc670d12f4402d8cbe112e14f0639f5e8e5c9d"></a>
+<a id="persistence-type-sha256-c78b9097bfae83cd08f0a98a92730236ba80ac61d712046959e4fc7f28aa1f36"></a>
 
 <a id="persistence-type-message"></a>
 
@@ -4101,15 +4109,15 @@ SHA-256: `6f72ece8f317cd080c4f20a93f1bf709965f5b81ac4669528f5a023191cfcf20`
 
 ### `Message`
 
-SHA-256: `4f9125fa028a56286fac70176ecc670d12f4402d8cbe112e14f0639f5e8e5c9d`
+SHA-256: `c78b9097bfae83cd08f0a98a92730236ba80ac61d712046959e4fc7f28aa1f36`
 
 来源：[`packages/llm/llm/src/message.ts:196`](../packages/llm/llm/src/message.ts)
 
 以下类型之一：
 
 - [`ToolResultMessage`](#persistence-type-sha256-4b259f7f8f0a44ad5e90b70a73553ced1df27012d126921d397ff403b6c86731)
-- [`DeveloperMessage`](#persistence-type-sha256-cebb7e9f3f663e660a531d9764ecfb9fa7fc73c22bf8d628f888e9ecf18c5cf0)
-- [`UserMessage`](#persistence-type-sha256-8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14)
+- [`DeveloperMessage`](#persistence-type-sha256-64ef542b1bfc988382d337f2ea85aab8ad76ea55341cf082163919d315688428)
+- [`UserMessage`](#persistence-type-sha256-4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce)
 - [`SystemMessage`](#persistence-type-sha256-09f3f8dc417f278257202714132f98ba7b52957d7b558c4a04456603890eb363)
 - [`AssistantMessage`](#persistence-type-sha256-fa87537f4a9c1e25602990a8bf686b383e9e00352ec8946e16ae24ba7c1625be)
 
@@ -4186,7 +4194,7 @@ SHA-256: `390eed1028aba02774f14408647acec10ec5516e97d4f15ecde2b9989d5a69f2`
 - `"negative"`
 - `"positive"`
 
-<a id="persistence-type-sha256-b112459dcb0686091c31ce6d213b2a4934b5ad19d37cc5b599e46f5a9d715591"></a>
+<a id="persistence-type-sha256-7e9f1072c17f7aa86547c9c8b02766c1006d866a1859a3d677a336e932f70d1a"></a>
 
 <a id="persistence-type-messagesource"></a>
 
@@ -4194,7 +4202,7 @@ SHA-256: `390eed1028aba02774f14408647acec10ec5516e97d4f15ecde2b9989d5a69f2`
 
 ### `MessageSource`
 
-SHA-256: `b112459dcb0686091c31ce6d213b2a4934b5ad19d37cc5b599e46f5a9d715591`
+SHA-256: `7e9f1072c17f7aa86547c9c8b02766c1006d866a1859a3d677a336e932f70d1a`
 
 来源：[`packages/llm/llm/src/message.ts:136`](../packages/llm/llm/src/message.ts)
 
@@ -4306,7 +4314,7 @@ SHA-256: `b112459dcb0686091c31ce6d213b2a4934b5ad19d37cc5b599e46f5a9d715591`
 | `tool-jobs` | `"snapshot"` | `sections`: [`ContextSnapshotSection[]`](#persistence-type-sha256-c748fb42c80a120038a8c587af80ec39924803c401364db11c8974d5bf6d0262) | [`{ kind: "tool-jobs", form: "snapshot" }`](#persistence-type-sha256-c5228b7a55498d84f529591744a0ab26e0b93ade18a70a26db1377a1ecfa6b49) |
 | `tool-jobs` | 未声明 | 无 | [`{ kind: "tool-jobs" }`](#persistence-type-sha256-24ce31aa528272e59f21cd26da9eca08968bcc97529756a749bfdab71746d9c8) |
 | `tool-registry` | 未声明 | 无 | [`{ kind: "tool-registry" }`](#persistence-type-sha256-8fcb0b44a575e998665c053643d1ab04c82f39253ebd190ac0c975b78e40b543) |
-| `user` | 未声明 | `rpcId`: `string` | [`{ kind: "user" }`](#persistence-type-sha256-6dacb1584f2bfbe209dc6b6f578d51da6d55595f64d0e63c727c98f359278def) |
+| `user` | 未声明 | `rpcId`: `string` | [`{ kind: "user" }`](#persistence-type-sha256-a4afec59b75aad5d13ef82d6931f35cc2d98918503916cf069355b77c5e42302) |
 | `user` | 未声明 | 无 | [`CommandSource`](#persistence-type-sha256-ada310bf0bdb8fed51f3b56ea63f6ea6b18bbd587f04fccb63a14ab0b2a24e05) |
 | `user-approval` | `"catalog"` | 无 | [`{ kind: "user-approval", form: "catalog" }`](#persistence-type-sha256-825ca23416b1ea9d81442afead5cf9229a6fa05842f042135cc3aa9710a6a2d8) |
 | `user-approval` | `"instructions"` | 无 | [`{ kind: "user-approval", form: "instructions" }`](#persistence-type-sha256-aa2bf9e82b9fdeb94a42af20031fffa30e4e23f01f4ac39757427d4c64c407f0) |
@@ -4319,13 +4327,13 @@ SHA-256: `b112459dcb0686091c31ce6d213b2a4934b5ad19d37cc5b599e46f5a9d715591`
 | `webhook` | `"notice"` | `deliveryId`: `string`; `provider`: `string`; `ruleId`: `string`; `source`: `string`; `summary`: `string` | [`{ kind: "webhook", form: "notice" }`](#persistence-type-sha256-9edc162949abf93bd5ff049191b345454ba104f583937ce5580fb50f067d2b94) |
 | `working-directory` | 未声明 | 无 | [`{ kind: "working-directory" }`](#persistence-type-sha256-2235d957bf4b7c6cf959231d480f0ba1f3a6d72d82981493fb6c7c963021d3d5) |
 
-<a id="persistence-type-sha256-d2b617d9dfcc4e0a4b60732d8ba1effc632e3b75124b93b064c07814a0a716bc"></a>
+<a id="persistence-type-sha256-ff2cbb53582d1827b02622482246979942f59e07e0393b76a161251423549e72"></a>
 
 ### `Message[]`
 
-SHA-256: `d2b617d9dfcc4e0a4b60732d8ba1effc632e3b75124b93b064c07814a0a716bc`
+SHA-256: `ff2cbb53582d1827b02622482246979942f59e07e0393b76a161251423549e72`
 
-[`Message`](#persistence-type-sha256-4f9125fa028a56286fac70176ecc670d12f4402d8cbe112e14f0639f5e8e5c9d) 的数组。
+[`Message`](#persistence-type-sha256-c78b9097bfae83cd08f0a98a92730236ba80ac61d712046959e4fc7f28aa1f36) 的数组。
 
 <a id="persistence-type-sha256-719c51f67074f97034a6c94297fe1f4b5d3c8d392c57586dab732aa5398c7a91"></a>
 
@@ -4443,22 +4451,6 @@ SHA-256: `1d9cb3caa96100b18b1911fa3ff8c751ef6992971a03c5f4d9aefc1a0004a345`
 
 [`PresentedFile`](#persistence-type-sha256-b8fc636a2121df9d8423c242e03c9d23b7ab7c6fdce00e45746932c60b730f97) 的数组。
 
-<a id="persistence-type-sha256-deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5"></a>
-
-<a id="persistence-type-packagestypertprotocolsrctypestsprincipal"></a>
-
-<a id="persistence-type-principal"></a>
-
-### `Principal`
-
-SHA-256: `deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5`
-
-来源：[`packages/typert/protocol/src/types.ts:457`](../packages/typert/protocol/src/types.ts) · [`packages/typert/protocol/src/types.ts:461`](../packages/typert/protocol/src/types.ts)
-
-| 属性 | 存在性 | 类型 |
-|---|---|---|
-| `kind` | 必需 | `"owner"` |
-
 <a id="persistence-type-sha256-cef171adf021a1867d244618a3dbbaafc22beb17c7f3df3ee203393271c8c6f6"></a>
 
 <a id="persistence-type-packagescoretool-executor-ptcsrctypestsptcdispatcheventdata"></a>
@@ -4709,7 +4701,7 @@ SHA-256: `b56f6a885da3dc394c69a3e3cc5c0cfc4da15601b63fda4989eee8f40efc5be4`
 | `source` | 必需 | [`SessionTitleSource`](#persistence-type-sha256-30d5a537b296685770b1241c4b4bbde19d5a31ff81aa23df73fab5e90b8fc65f) |
 | `title` | 必需 | `string` |
 
-<a id="persistence-type-sha256-9808c3d0f0a1be8fe313b4148ba22c691c4d59bd2c67aef3c63cfe8043148c5f"></a>
+<a id="persistence-type-sha256-7ff62f6599c083ceb5a0d7a8940ff85ba80dc1d7ddd6ba9339903e93f74cba54"></a>
 
 <a id="persistence-type-packagessessionsession-title-llmsrcindextssessiontitlellmrequesteventdata"></a>
 
@@ -4717,15 +4709,15 @@ SHA-256: `b56f6a885da3dc394c69a3e3cc5c0cfc4da15601b63fda4989eee8f40efc5be4`
 
 ### `SessionTitleLlmRequestEventData`
 
-SHA-256: `9808c3d0f0a1be8fe313b4148ba22c691c4d59bd2c67aef3c63cfe8043148c5f`
+SHA-256: `7ff62f6599c083ceb5a0d7a8940ff85ba80dc1d7ddd6ba9339903e93f74cba54`
 
-来源：[`packages/session/session-title-llm/src/index.ts:37`](../packages/session/session-title-llm/src/index.ts)
+来源：[`packages/session/session-title-llm/src/index.ts:43`](../packages/session/session-title-llm/src/index.ts)
 
 | 属性 | 存在性 | 类型 |
 |---|---|---|
 | `maxTokens` | 必需 | `number` |
 | `messageSeqs` | 必需 | [`number[]`](#persistence-type-sha256-5d03ba38734809bcbd2a55221bd938b3b3fc34b49bb686c6113e9e4931e3aa78) |
-| `messages` | 必需 | [`Message[]`](#persistence-type-sha256-d2b617d9dfcc4e0a4b60732d8ba1effc632e3b75124b93b064c07814a0a716bc) |
+| `messages` | 必需 | [`Message[]`](#persistence-type-sha256-ff2cbb53582d1827b02622482246979942f59e07e0393b76a161251423549e72) |
 | `reasoningEffort` | 可选 | `string` |
 | `route` | 必需 | [`SessionTitleModelIdentity`](#persistence-type-sha256-07e1a58c58b593f507b8e7f25723bb0aa42baae6e00f5ecfddf28cb1e64d3235) |
 | `system` | 必需 | `string` |
@@ -4778,6 +4770,24 @@ SHA-256: `30d5a537b296685770b1241c4b4bbde19d5a31ff81aa23df73fab5e90b8fc65f`
 | `provider` | 未声明 | `provider`: `string` | [`{ kind: "provider" }`](#persistence-type-sha256-b81e9de81a481b24e1e1f9adf038bfc59e57b4f35ce62f8f1e45284186f4f812) |
 | `user` | 未声明 | 无 | [`CommandSource`](#persistence-type-sha256-ada310bf0bdb8fed51f3b56ea63f6ea6b18bbd587f04fccb63a14ab0b2a24e05) |
 
+<a id="persistence-type-sha256-4d60dddaa65d3da8d4cd014d85ce3d2c2875664dd0433e331d8e9d395289686b"></a>
+
+<a id="persistence-type-packagesexperimentallivesharesrchostviewer-principaltsshareviewerprincipal"></a>
+
+<a id="persistence-type-shareviewerprincipal"></a>
+
+### `ShareViewerPrincipal`
+
+SHA-256: `4d60dddaa65d3da8d4cd014d85ce3d2c2875664dd0433e331d8e9d395289686b`
+
+来源：[`packages/experimental/liveshare/src/host/viewer-principal.ts:24`](../packages/experimental/liveshare/src/host/viewer-principal.ts)
+
+| 属性 | 存在性 | 类型 |
+|---|---|---|
+| `actor` | 必需 | [`{ displayName?, providerId, subjectId, tenantId }`](#persistence-type-sha256-0a92c5bdfa06c2e2615b777728f3aa95f408d43b9012e7b754568311251db623) |
+| `kind` | 必需 | `"share-viewer"` |
+| `shareId` | 必需 | `string` |
+
 <a id="persistence-type-sha256-65d583e66518c5236015e0846470fb32efcf92375ed306aef14e50a9d2cd2099"></a>
 
 <a id="persistence-type-packagesskilltool-skillsrcindextsskillcatalogsource"></a>
@@ -5382,7 +5392,7 @@ SHA-256: `f1687f982fa3d41ef29e159feed154ecd13af4dd209acaee16038f223f2e9402`
 | `interrupted` | 未声明 | 无 | [`{ kind: "interrupted" }`](#persistence-type-sha256-56b7c047694875a843ba020dfea3c8380d54ae4ff88ab349e72004dc21e07c23) |
 | `max-tokens` | 未声明 | 无 | [`{ kind: "max-tokens" }`](#persistence-type-sha256-ab7ec5f9eb2c6dfacca5da4c37cf7ba85d04172053ee6b1ebf1709ffcd99c1a7) |
 
-<a id="persistence-type-sha256-8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14"></a>
+<a id="persistence-type-sha256-4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce"></a>
 
 <a id="persistence-type-packagesllmllmsrcmessagetsusermessage"></a>
 
@@ -5390,7 +5400,7 @@ SHA-256: `f1687f982fa3d41ef29e159feed154ecd13af4dd209acaee16038f223f2e9402`
 
 ### `UserMessage`
 
-SHA-256: `8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14`
+SHA-256: `4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce`
 
 来源：[`packages/llm/llm/src/message.ts:162`](../packages/llm/llm/src/message.ts)
 
@@ -5399,19 +5409,19 @@ SHA-256: `8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14`
 | `content` | 必需 | [`ContentBlock[]`](#persistence-type-sha256-b52f215a6cd691058a3413c12f161fa3b563a2f4895adb3df6f744ec4b0a6ef1) |
 | `id` | 必需 | `string` |
 | `role` | 必需 | `"user"` |
-| `source` | 必需 | [`MessageSource`](#persistence-type-sha256-b112459dcb0686091c31ce6d213b2a4934b5ad19d37cc5b599e46f5a9d715591) |
+| `source` | 必需 | [`MessageSource`](#persistence-type-sha256-7e9f1072c17f7aa86547c9c8b02766c1006d866a1859a3d677a336e932f70d1a) |
 
 消息源兼容策略：`source` — `session-source-attribution` v1; `session.user-message.source`; `kind`; `preserve`.
 
 仅表示归属的新增 kind：`action-cards`, `tmux-context`, `user-question-reply`, `working-directory`.
 
-<a id="persistence-type-sha256-aada2771a250136cc3a839b0507e9c6502622a2897716903942297bcb6661292"></a>
+<a id="persistence-type-sha256-7c203f3d4dfa6638ff2601247cc7ca5d46731d2c614aa61217475b9eb1fbd0b3"></a>
 
 ### `UserMessage[]`
 
-SHA-256: `aada2771a250136cc3a839b0507e9c6502622a2897716903942297bcb6661292`
+SHA-256: `7c203f3d4dfa6638ff2601247cc7ca5d46731d2c614aa61217475b9eb1fbd0b3`
 
-[`UserMessage`](#persistence-type-sha256-8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14) 的数组。
+[`UserMessage`](#persistence-type-sha256-4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce) 的数组。
 
 <a id="persistence-type-sha256-c2deb7c9183735d4e0fffddf5c623f4e34daa1c8e96b111982e957dfcbbcf896"></a>
 
@@ -5675,6 +5685,17 @@ SHA-256: `50cf02d875f8a1f1411f4a6fbcffab9120ccef5f74a47331fbf29480e5f68f48`
 - `"fork"`
 - `"fresh"`
 
+<a id="persistence-type-sha256-824a4aad44a54e245c67196817d67946734a2dc0eee0b0b6834a5b2a6ef352ce"></a>
+
+### `union (2 variants)`
+
+SHA-256: `824a4aad44a54e245c67196817d67946734a2dc0eee0b0b6834a5b2a6ef352ce`
+
+| kind | form 属性 | 其他必需字段 | 完整定义 |
+|---|---|---|---|
+| `owner` | 未声明 | 无 | [`{ kind: "owner" }`](#persistence-type-sha256-deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5) |
+| `share-viewer` | 未声明 | `actor`: [`{ displayName?, providerId, subjectId, tenantId }`](#persistence-type-sha256-0a92c5bdfa06c2e2615b777728f3aa95f408d43b9012e7b754568311251db623); `shareId`: `string` | [`ShareViewerPrincipal`](#persistence-type-sha256-4d60dddaa65d3da8d4cd014d85ce3d2c2875664dd0433e331d8e9d395289686b) |
+
 <a id="persistence-type-sha256-9947aa5938fe19a895298da412917acbf9ffb5093a73ab8baa257e6ae9e63a07"></a>
 
 ### `union (2 variants)`
@@ -6200,6 +6221,21 @@ SHA-256: `119abe2b9c0b2f46ecb31d82b9acba4d4b30e049f655e2475e8b4ae12d5a9e25`
 | `point` | 必需 | `string` |
 | `turn` | 必需 | `number` |
 
+<a id="persistence-type-sha256-0a92c5bdfa06c2e2615b777728f3aa95f408d43b9012e7b754568311251db623"></a>
+
+### `{ displayName?, providerId, subjectId, tenantId }`
+
+SHA-256: `0a92c5bdfa06c2e2615b777728f3aa95f408d43b9012e7b754568311251db623`
+
+来源：[`packages/experimental/liveshare/src/host/viewer-principal.ts:29`](../packages/experimental/liveshare/src/host/viewer-principal.ts)
+
+| 属性 | 存在性 | 类型 |
+|---|---|---|
+| `displayName` | 可选 | `string` |
+| `providerId` | 必需 | `string` |
+| `subjectId` | 必需 | `string` |
+| `tenantId` | 必需 | `string` |
+
 <a id="persistence-type-sha256-9e41386b3a0c9572b0d63078492ebb3997da7d3a830d44e0259418bd02f4bcb2"></a>
 
 ### `{ end, start }`
@@ -6296,18 +6332,18 @@ SHA-256: `ad0c38a0adb82a94c925456df41586d9b5f9202fca18593eae2213d4445b4585`
 | `reason` | 必需 | [`RequestHeaderReason`](#persistence-type-sha256-530da6c0267813bb4511af72883cc518834e624e3b3220a7062955fd57a788a6) |
 | `startsSeries` | 可选 | `true` |
 
-<a id="persistence-type-sha256-12f9a5a7506bca46d6ef8e3c71826c4bf40e1389bfe0236cfffaea0c3fb367d2"></a>
+<a id="persistence-type-sha256-53d4f8256bc58109468ea358ac54d437760cd765012360cafe72a401e6a41d4a"></a>
 
 ### `{ headerSeq?, message, step, turn }`
 
-SHA-256: `12f9a5a7506bca46d6ef8e3c71826c4bf40e1389bfe0236cfffaea0c3fb367d2`
+SHA-256: `53d4f8256bc58109468ea358ac54d437760cd765012360cafe72a401e6a41d4a`
 
 来源：[`packages/core/session/src/types.ts:317`](../packages/core/session/src/types.ts)
 
 | 属性 | 存在性 | 类型 |
 |---|---|---|
 | `headerSeq` | 可选 | `number` |
-| `message` | 必需 | [`DeveloperMessage`](#persistence-type-sha256-cebb7e9f3f663e660a531d9764ecfb9fa7fc73c22bf8d628f888e9ecf18c5cf0) |
+| `message` | 必需 | [`DeveloperMessage`](#persistence-type-sha256-64ef542b1bfc988382d337f2ea85aab8ad76ea55341cf082163919d315688428) |
 | `step` | 必需 | `number` |
 | `turn` | 必需 | `number` |
 
@@ -6391,17 +6427,17 @@ SHA-256: `17d1afb770d9941936130996da00dc86782cfef731d8d6526162c301256a4ac3`
 |---|---|---|
 | `inherited` | 可选 | `true` |
 
-<a id="persistence-type-sha256-c433ef580a5b229bbe68274a7164aa3a8e8040d7217f010b610ca0696a84253c"></a>
+<a id="persistence-type-sha256-d4d960185026266ed7bd127be1e252234689e8b4890c7c2677a644ba58f35401"></a>
 
 ### `{ inserted, outcome?, removedCount?, start, … }`
 
-SHA-256: `c433ef580a5b229bbe68274a7164aa3a8e8040d7217f010b610ca0696a84253c`
+SHA-256: `d4d960185026266ed7bd127be1e252234689e8b4890c7c2677a644ba58f35401`
 
 来源：[`packages/core/agent/src/types.ts:110`](../packages/core/agent/src/types.ts)
 
 | 属性 | 存在性 | 类型 |
 |---|---|---|
-| `inserted` | 必需 | [`UserMessage[]`](#persistence-type-sha256-aada2771a250136cc3a839b0507e9c6502622a2897716903942297bcb6661292) |
+| `inserted` | 必需 | [`UserMessage[]`](#persistence-type-sha256-7c203f3d4dfa6638ff2601247cc7ca5d46731d2c614aa61217475b9eb1fbd0b3) |
 | `outcome` | 可选 | `"canceled"` |
 | `removedCount` | 可选 | `number` |
 | `start` | 必需 | `number` |
@@ -6955,6 +6991,18 @@ SHA-256: `52c6113cb0e53f345324bf84f01928bea5d5df57ee80bc0dd65407b8bc5a3734`
 | `kind` | 必需 | `"model-selection"` |
 | `sections` | 必需 | [`ContextSnapshotSection[]`](#persistence-type-sha256-c748fb42c80a120038a8c587af80ec39924803c401364db11c8974d5bf6d0262) |
 
+<a id="persistence-type-sha256-deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5"></a>
+
+### `{ kind: "owner" }`
+
+SHA-256: `deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5`
+
+来源：[`packages/typert/protocol/src/types.ts:457`](../packages/typert/protocol/src/types.ts)
+
+| 属性 | 存在性 | 类型 |
+|---|---|---|
+| `kind` | 必需 | `"owner"` |
+
 <a id="persistence-type-sha256-6c03546143cdf6ae88f1745ac98c5139efa1588d1415249bbc5f3104d32ab800"></a>
 
 ### `{ kind: "parent" }`
@@ -7653,11 +7701,11 @@ SHA-256: `8fcb0b44a575e998665c053643d1ab04c82f39253ebd190ac0c975b78e40b543`
 |---|---|---|
 | `kind` | 必需 | `"tool-registry"` |
 
-<a id="persistence-type-sha256-6dacb1584f2bfbe209dc6b6f578d51da6d55595f64d0e63c727c98f359278def"></a>
+<a id="persistence-type-sha256-a4afec59b75aad5d13ef82d6931f35cc2d98918503916cf069355b77c5e42302"></a>
 
 ### `{ kind: "user" }`
 
-SHA-256: `6dacb1584f2bfbe209dc6b6f578d51da6d55595f64d0e63c727c98f359278def`
+SHA-256: `a4afec59b75aad5d13ef82d6931f35cc2d98918503916cf069355b77c5e42302`
 
 来源：[`packages/api/session-controller/src/types.ts:397`](../packages/api/session-controller/src/types.ts)
 
@@ -7665,7 +7713,7 @@ SHA-256: `6dacb1584f2bfbe209dc6b6f578d51da6d55595f64d0e63c727c98f359278def`
 |---|---|---|
 | `clientTimeZone` | 可选 | `string` |
 | `kind` | 必需 | `"user"` |
-| `principal` | 可选 | [`Principal`](#persistence-type-sha256-deebfc7c62177ea840f23c6362b8615bc78ffa93377dd5d243c04e541c413af5) |
+| `principal` | 可选 | [`union (2 variants)`](#persistence-type-sha256-824a4aad44a54e245c67196817d67946734a2dc0eee0b0b6834a5b2a6ef352ce) |
 | `rpcId` | 必需 | `string` |
 
 <a id="persistence-type-sha256-6292bcbedaa97feaec5b48a03bb8144b581b93309d9d6c905f26da7a6a7a0a4f"></a>
@@ -7933,7 +7981,7 @@ SHA-256: `9a2a9029f8d7ede05336980d8342737557f487b913bfd28853d0ab5214600ab5`
 
 SHA-256: `8bb8c3751a6ce64b61aba1ec7ae798c00a5803c4d868a0430873216c6569ed52`
 
-来源：[`packages/session/session-log-deepseek/src/types.ts:81`](../packages/session/session-log-deepseek/src/types.ts)
+来源：[`packages/session/session-log-deepseek/src/types.ts:96`](../packages/session/session-log-deepseek/src/types.ts)
 
 | 属性 | 存在性 | 类型 |
 |---|---|---|
@@ -8048,17 +8096,17 @@ SHA-256: `a10c17474eaf2ddab7095a099e0fe3d046fc18e56c3e344fc8894c05ff9ef97b`
 | `time` | 必需 | `number` |
 | `type` | 必需 | `"agent-preset/selected"` |
 
-<a id="persistence-type-sha256-9e8043098fb89db6d7c92a92c70146c5c8d24fa88f733c687fa29e5e7a58ab30"></a>
+<a id="persistence-type-sha256-cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e"></a>
 
 <a id="persistence-type-eventagentinboxspliced"></a>
 
 ### `{ type: "agent/inbox/spliced" }`
 
-SHA-256: `9e8043098fb89db6d7c92a92c70146c5c8d24fa88f733c687fa29e5e7a58ab30`
+SHA-256: `cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e`
 
 | 属性 | 存在性 | 类型 |
 |---|---|---|
-| `data` | 必需 | [`{ inserted, outcome?, removedCount?, start, … }`](#persistence-type-sha256-c433ef580a5b229bbe68274a7164aa3a8e8040d7217f010b610ca0696a84253c) |
+| `data` | 必需 | [`{ inserted, outcome?, removedCount?, start, … }`](#persistence-type-sha256-d4d960185026266ed7bd127be1e252234689e8b4890c7c2677a644ba58f35401) |
 | `ignorable` | 可选 | `true` |
 | `seq` | 必需 | `number` |
 | `time` | 必需 | `number` |
@@ -8299,17 +8347,17 @@ SHA-256: `13d3d180f977bf78081d487ffa0ecb75857349bcab29a5a3fb48189fca2a6176`
 | `time` | 必需 | `number` |
 | `type` | 必需 | `"deliverables/presented"` |
 
-<a id="persistence-type-sha256-95acdbd066cf445d37092e5fdfe2e8717ef6ca1aed50f70e2e6037a6989a1f2f"></a>
+<a id="persistence-type-sha256-70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f"></a>
 
 <a id="persistence-type-eventdevelopermessage"></a>
 
 ### `{ type: "developer/message" }`
 
-SHA-256: `95acdbd066cf445d37092e5fdfe2e8717ef6ca1aed50f70e2e6037a6989a1f2f`
+SHA-256: `70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f`
 
 | 属性 | 存在性 | 类型 |
 |---|---|---|
-| `data` | 必需 | [`{ headerSeq?, message, step, turn }`](#persistence-type-sha256-12f9a5a7506bca46d6ef8e3c71826c4bf40e1389bfe0236cfffaea0c3fb367d2) |
+| `data` | 必需 | [`{ headerSeq?, message, step, turn }`](#persistence-type-sha256-53d4f8256bc58109468ea358ac54d437760cd765012360cafe72a401e6a41d4a) |
 | `ignorable` | 可选 | `true` |
 | `seq` | 必需 | `number` |
 | `sourceEventSeqs` | 可选 | [`number[]`](#persistence-type-sha256-5d03ba38734809bcbd2a55221bd938b3b3fc34b49bb686c6113e9e4931e3aa78) |
@@ -8709,17 +8757,17 @@ SHA-256: `1b912703e2d64f91c99c675b8f805b01076c8325b905c1218ad81ef0b24909d5`
 | `time` | 必需 | `number` |
 | `type` | 必需 | `"session/title"` |
 
-<a id="persistence-type-sha256-eaa9125aec0fb28478096c46e73e21bf512ab0d84d826bfb41e7308707734cb5"></a>
+<a id="persistence-type-sha256-2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c"></a>
 
 <a id="persistence-type-eventsessiontitle-llm-request"></a>
 
 ### `{ type: "session/title-llm-request" }`
 
-SHA-256: `eaa9125aec0fb28478096c46e73e21bf512ab0d84d826bfb41e7308707734cb5`
+SHA-256: `2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c`
 
 | 属性 | 存在性 | 类型 |
 |---|---|---|
-| `data` | 必需 | [`SessionTitleLlmRequestEventData`](#persistence-type-sha256-9808c3d0f0a1be8fe313b4148ba22c691c4d59bd2c67aef3c63cfe8043148c5f) |
+| `data` | 必需 | [`SessionTitleLlmRequestEventData`](#persistence-type-sha256-7ff62f6599c083ceb5a0d7a8940ff85ba80dc1d7ddd6ba9339903e93f74cba54) |
 | `ignorable` | 可选 | `true` |
 | `seq` | 必需 | `number` |
 | `time` | 必需 | `number` |
@@ -9142,17 +9190,17 @@ SHA-256: `f1a96afe7503ac1817de769cd0ba13d9b80111c7034c50106b3344ecc14cc515`
 | `type` | 必需 | `"usage"` |
 | `usage` | 必需 | [`TokenUsage`](#persistence-type-sha256-fec5442b9ee4122e10514d81d5a43648003fe8bfb7ee2ba50c0cdbdd383ed394) |
 
-<a id="persistence-type-sha256-39adb7fce8475af6402acd925ea79697b3341c22422ac32833d71217d84e987f"></a>
+<a id="persistence-type-sha256-5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451"></a>
 
 <a id="persistence-type-eventusermessage"></a>
 
 ### `{ type: "user/message" }`
 
-SHA-256: `39adb7fce8475af6402acd925ea79697b3341c22422ac32833d71217d84e987f`
+SHA-256: `5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451`
 
 | 属性 | 存在性 | 类型 |
 |---|---|---|
-| `data` | 必需 | [`UserMessage`](#persistence-type-sha256-8bca2b4f53ec7745b0484c6e7d3a6beb2ddd6cea82fc81786eaa3c0d065bbc14) |
+| `data` | 必需 | [`UserMessage`](#persistence-type-sha256-4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce) |
 | `ignorable` | 可选 | `true` |
 | `seq` | 必需 | `number` |
 | `sourceEventSeqs` | 可选 | [`number[]`](#persistence-type-sha256-5d03ba38734809bcbd2a55221bd938b3b3fc34b49bb686c6113e9e4931e3aa78) |
diff --git a/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.i18n.yaml b/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.i18n.yaml
new file mode 100644
index 0000000000..4202182528
--- /dev/null
+++ b/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.i18n.yaml
@@ -0,0 +1,28 @@
+# Bilingual-pair consistency record for 2026-10-13-liveshare-share-viewer-principal.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.md
+/:
+  en: 3d5a424ae7d7e46b
+  zh: c22a8e4a62d8cc1a
+/2026-10-13-liveshare-share-viewer-principal:
+  en: 9b8097ab5922733e
+  zh: e52f33004c75f18f
+/2026-10-13-liveshare-share-viewer-principal/summary:
+  en: 32551ff4ee358694
+  zh: f6cfc403bed4f780
+/2026-10-13-liveshare-share-viewer-principal/table-of-contents:
+  en: 6cf314a069ceb451
+  zh: 9adff678e9ecab3b
+/2026-10-13-liveshare-share-viewer-principal/declaration:
+  en: 6907136f28e48c90
+  zh: 02f8298485f3d8e7
+/2026-10-13-liveshare-share-viewer-principal/compatibility:
+  en: 3c4faef3cc5010bb
+  zh: 051485cd767ec6bc
+/2026-10-13-liveshare-share-viewer-principal/verification:
+  en: 427079a2393d0ffe
+  zh: 17249b4e0fc0faeb
+/2026-10-13-liveshare-share-viewer-principal/dev-note:
+  en: b75c8458928b72b9
+  zh: 003ba4e17b4b5269
diff --git a/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.md b/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.md
new file mode 100644
index 0000000000..a22251e96d
--- /dev/null
+++ b/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.md
@@ -0,0 +1,60 @@
+---
+description: "Records a persistence type transition and its compatibility acknowledgement."
+kind: persistence-change
+---
+
+# 2026-10-13-liveshare-share-viewer-principal
+
+English | [中文](2026-10-13-liveshare-share-viewer-principal.zh.md)
+
+## Summary
+
+Adds the LiveShare share-viewer principal, including the Relay-asserted display name when available, to the user-rpc message source of prompts a share reader submits.
+
+## Table of Contents
+
+- [Declaration](#declaration)
+- [Compatibility](#compatibility)
+- [Verification](#verification)
+- [Dev Note](#dev-note)
+
+<a id="declaration"></a>
+## Declaration
+
+```yaml persistence-change
+schemaVersion: 1
+id: 2026-10-13-liveshare-share-viewer-principal
+baseline: false
+changes:
+  - root: "event:agent/inbox/spliced"
+    previous: "2026-10-25-skill-catalog-incomplete"
+    after: "cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e"
+    decision: same-version
+  - root: "event:developer/message"
+    previous: "2026-10-25-skill-catalog-incomplete"
+    after: "70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f"
+    decision: same-version
+  - root: "event:session/title-llm-request"
+    previous: "2026-10-25-skill-catalog-incomplete"
+    after: "2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c"
+    decision: same-version
+  - root: "event:user/message"
+    previous: "2026-10-25-skill-catalog-incomplete"
+    after: "5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451"
+    decision: same-version
+```
+
+<a id="compatibility"></a>
+## Compatibility
+
+The share-viewer variant is written only for a prompt that a LiveShare share reader's Peer submits; owner prompts still omit principal, so their sources and every existing Session log are unchanged. The value carries the share id and the Relay-asserted provider, tenant, and subject ids. It also carries an optional display name when the Relay asserts one, for attribution only; credentials and avatars are never persisted, and authorization still uses the identity triple. Readers that do not know the optional field keep showing the durable subject id. The LiveShare host consumes it in two places: the `agent/pre-step` admission check re-reads the Relay's grant for every entering message whose principal is a share viewer, and rejects the step when that grant no longer holds; the same step records, in memory for that turn only, that the running turn was viewer-started, which confines that turn to the shared tool surface and leaves an owner-started turn on the Session's native tools. That marker is never appended to the Session log and is recomputed from the next admitted step. A build without LiveShare keeps the message an ordinary user message because the kind stays 'user', and a principal kind this package does not drive is left to whoever drives it. A current reader of an older log finds no share-viewer principal and admits those prompts as ordinary input, as before. The field is not part of any model request. SESSION_FORMAT_VERSION does not change.
+
+<a id="verification"></a>
+## Verification
+
+pnpm exec vitest run packages/experimental/liveshare/tests/relay-target-admission.host.spec.ts packages/experimental/liveshare/tests/relay-pre-step-admission.host.spec.ts packages/experimental/liveshare/tests/share-host-listeners.spec.ts packages/experimental/liveshare packages/experimental/liveshare-protocol: a share reader's prompt persists source.principal in agent/inbox/spliced, recovered reader input is refused at the `agent/pre-step` admission check, an admitted one enters the model, and a principal this package does not drive is left alone; the optional displayName is persisted for attribution, accepted only as a non-empty string, and missing or malformed values fall back to the subject id; 35 tests passed plus the two-package LiveShare and protocol suites.
+
+<a id="dev-note"></a>
+## Dev Note
+
+None.
diff --git a/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.schema.json b/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.schema.json
new file mode 100644
index 0000000000..dcce773ee6
--- /dev/null
+++ b/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.schema.json
@@ -0,0 +1,253 @@
+{
+  "formatVersion": 2,
+  "roots": [
+    {"key":"event:agent/inbox/spliced","kind":"event","event":"agent/inbox/spliced","surface":false,"digest":"cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e"},
+    {"key":"event:developer/message","kind":"event","event":"developer/message","surface":true,"digest":"70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f"},
+    {"key":"event:session/title-llm-request","kind":"event","event":"session/title-llm-request","surface":false,"digest":"2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c"},
+    {"key":"event:user/message","kind":"event","event":"user/message","surface":true,"digest":"5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451"}
+  ],
+  "types": [],
+  "nodes": {
+    "0203243b72fc867a": {"kind":"object","properties":[{"name":"kind","type":"24b10f7cdae64928","optional":false}],"indices":[]},
+    "022623b9ef98ec47": {"kind":"object","properties":[{"name":"form","type":"383cf73ae4748e5b","optional":false},{"name":"kind","type":"f68c335306535a00","optional":false}],"indices":[]},
+    "02b2c23f2d94b028": {"kind":"object","properties":[{"name":"kind","type":"c5687b1313206a6f","optional":false}],"indices":[]},
+    "05205074b24d8340": {"kind":"literal","value":"action-cards"},
+    "0657d3ca5ac4e7bf": {"kind":"primitive","type":"number"},
+    "07e1a58c58b593f5": {"kind":"object","properties":[{"name":"model","type":"4cd48f3e5108bd6e","optional":false},{"name":"provider","type":"4cd48f3e5108bd6e","optional":false}],"indices":[]},
+    "09655b34d7f3cf1e": {"kind":"literal","value":"system-prompt"},
+    "09f3f8dc417f2782": {"kind":"object","properties":[{"name":"content","type":"b52f215a6cd69105","optional":false},{"name":"id","type":"4cd48f3e5108bd6e","optional":false},{"name":"role","type":"8af841fc9b265ade","optional":false},{"name":"source","type":"65a8400e451e667e","optional":false}],"indices":[]},
+    "0a92c5bdfa06c2e2": {"kind":"object","properties":[{"name":"displayName","type":"4cd48f3e5108bd6e","optional":true},{"name":"providerId","type":"4cd48f3e5108bd6e","optional":false},{"name":"subjectId","type":"4cd48f3e5108bd6e","optional":false},{"name":"tenantId","type":"4cd48f3e5108bd6e","optional":false}],"indices":[]},
+    "0ed8d1108fe7a5e1": {"kind":"object","properties":[{"name":"kind","type":"a9059a81430b3207","optional":false}],"indices":[]},
+    "0eeb17e1df89b1eb": {"kind":"object","properties":[{"name":"form","type":"fee1caf8ab6a65c1","optional":false},{"name":"kind","type":"24b10f7cdae64928","optional":false}],"indices":[]},
+    "0f46153645c29784": {"kind":"object","properties":[{"name":"height","type":"0657d3ca5ac4e7bf","optional":false},{"name":"width","type":"0657d3ca5ac4e7bf","optional":false}],"indices":[]},
+    "0fe52387f6505270": {"kind":"literal","value":"plan-mode"},
+    "11638dc58a31496f": {"kind":"object","properties":[{"name":"form","type":"6f9e00383836275e","optional":false},{"name":"kind","type":"2f3f201c8846e19c","optional":false},{"name":"sections","type":"c748fb42c80a1200","optional":false}],"indices":[]},
+    "12d5808fac1996b9": {"kind":"object","properties":[{"name":"attachment","type":"b0b0eb1b16490f6b","optional":false},{"name":"offloaded","type":"dacf3d5f3e4ff619","optional":true},{"name":"type","type":"fb8b6a2e53cb9cf4","optional":false}],"indices":[]},
+    "1379f0b72275994d": {"kind":"literal","value":"developer/message"},
+    "16d0507cb94b4cfc": {"kind":"literal","value":"relay"},
+    "1922cd79a70806c1": {"kind":"literal","value":"skill-invocation"},
+    "1938c8c20f1cba7c": {"kind":"object","properties":[{"name":"form","type":"fee1caf8ab6a65c1","optional":false},{"name":"kind","type":"d9edf1862e4471d6","optional":false}],"indices":[]},
+    "1e709346005826eb": {"kind":"object","properties":[{"name":"form","type":"aec150797b655c5f","optional":false},{"name":"kind","type":"d9edf1862e4471d6","optional":false}],"indices":[]},
+    "1f0133217eeeffd8": {"kind":"literal","value":"tool-call"},
+    "1f1385dbc3e875c0": {"kind":"literal","value":"repeat-tool-reminder"},
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diff --git a/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.zh.md b/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.zh.md
new file mode 100644
index 0000000000..7250b05ac2
--- /dev/null
+++ b/docs/persistence-changes/2026-10-13-liveshare-share-viewer-principal.zh.md
@@ -0,0 +1,60 @@
+---
+description: "记录持久化类型更改及其兼容性确认。"
+kind: persistence-change
+---
+
+# 2026-10-13-liveshare-share-viewer-principal
+
+[English](2026-10-13-liveshare-share-viewer-principal.md) | 中文
+
+## 概述
+
+为分享读者提交的提示词，在 user-rpc 消息来源中加入 LiveShare 的 share-viewer principal；Relay 断言了显示名时一并保存。
+
+## 目录
+
+- [声明](#declaration)
+- [兼容性](#compatibility)
+- [验证](#verification)
+- [开发备注](#dev-note)
+
+<a id="declaration"></a>
+## 声明
+
+```yaml persistence-change
+schemaVersion: 1
+id: 2026-10-13-liveshare-share-viewer-principal
+baseline: false
+changes:
+  - root: "event:agent/inbox/spliced"
+    previous: "2026-10-25-skill-catalog-incomplete"
+    after: "cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e"
+    decision: same-version
+  - root: "event:developer/message"
+    previous: "2026-10-25-skill-catalog-incomplete"
+    after: "70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f"
+    decision: same-version
+  - root: "event:session/title-llm-request"
+    previous: "2026-10-25-skill-catalog-incomplete"
+    after: "2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c"
+    decision: same-version
+  - root: "event:user/message"
+    previous: "2026-10-25-skill-catalog-incomplete"
+    after: "5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451"
+    decision: same-version
+```
+
+<a id="compatibility"></a>
+## 兼容性
+
+只有 LiveShare 分享读者的 Peer 提交提示词时才写入 share-viewer 变体；所有者的提示词仍不写 principal，因此其来源与所有已有会话日志都不变。该值含分享 ID 和 Relay 断言的 provider、tenant、subject ID；Relay 断言了显示名时还包含可选的 displayName，仅供展示。凭据与头像永不持久化，授权仍只使用身份三元组；不认识该可选字段的读取方继续显示持久化的 subject id。LiveShare Host 在两个地方消费它：`agent/pre-step` 准入校验会为每条带分享查看者 principal 的进入消息重新读取 Relay 授权，授权不再成立时拒绝该步骤；同一步骤还会在当前轮次的内存状态中记录该轮次由查看者发起，使该轮次只运行共享工具面，而所有者自己发起的轮次保留会话原生工具。该标记不写入会话日志，并从下一个准入步骤重新计算。未装 LiveShare 的构建因 kind 仍为 'user' 而照常把它当作普通用户消息；本包不驱动的 principal 种类交由驱动它的插件处理。当前读取方读取旧日志时找不到 share-viewer principal，与以往一样把这些提示词当作普通输入放行。该字段不进入任何模型请求。SESSION_FORMAT_VERSION 不变。
+
+<a id="verification"></a>
+## 验证
+
+pnpm exec vitest run packages/experimental/liveshare/tests/relay-target-admission.host.spec.ts packages/experimental/liveshare/tests/relay-pre-step-admission.host.spec.ts packages/experimental/liveshare/tests/share-host-listeners.spec.ts packages/experimental/liveshare packages/experimental/liveshare-protocol：分享读者的提示词在 agent/inbox/spliced 中持久化 source.principal，恢复的读者输入在 `agent/pre-step` 准入校验中被拒绝，已准入的输入进入模型，本包不驱动的 principal 种类不受影响；可选 displayName 仅用于展示，只接受非空字符串，缺失或非法值回退 subject id；35 个测试通过，另有 LiveShare 与协议两个包的全量测试。
+
+<a id="dev-note"></a>
+## 开发备注
+
+无。
diff --git a/docs/persistence-changes/historical-formats/README.i18n.yaml b/docs/persistence-changes/historical-formats/README.i18n.yaml
index 40d842e063..e9e8287e17 100644
--- a/docs/persistence-changes/historical-formats/README.i18n.yaml
+++ b/docs/persistence-changes/historical-formats/README.i18n.yaml
@@ -15,8 +15,8 @@
   en: 14c57f30e676f6e3
   zh: b1a0ccf26fab3727
 /session-persistence-formats/format-references:
-  en: e3511a4ac3bc4457
-  zh: 828f3c39f80d5370
+  en: 5912b107ada0bfc4
+  zh: b997083d6fed3f07
 /session-persistence-formats/scope-and-evidence:
   en: b220062139ddac1e
   zh: 7c4c0efe05dafa9c
diff --git a/docs/persistence-changes/historical-formats/README.md b/docs/persistence-changes/historical-formats/README.md
index 74c575b300..e0a594594d 100644
--- a/docs/persistence-changes/historical-formats/README.md
+++ b/docs/persistence-changes/historical-formats/README.md
@@ -32,7 +32,7 @@ The index is generated from validated snapshots and the current writer constant.
 | 1 | PR #3349 | [V1](v1.md) | [JSON](v1.schema.json) | 54 / 415 |
 | 2 | `dsh-v0.1.3-alpha.2` | [V2](v2.md) | [JSON](v2.schema.json) | 56 / 435 |
 | 3 | PR #4320 | [V3](v3.md) | [JSON](v3.schema.json) | 60 / 467 |
-| 4 | Current checkout | [Current catalog](../../persistence-catalog.md) | [JSON](../../persistence-schema.json) | 65 / 622 |
+| 4 | Current checkout | [Current catalog](../../persistence-catalog.md) | [JSON](../../persistence-schema.json) | 65 / 626 |
 
 <!-- persistence-format-index:end -->
 
diff --git a/docs/persistence-changes/historical-formats/README.zh.md b/docs/persistence-changes/historical-formats/README.zh.md
index 12eb600771..4202dfcc4e 100644
--- a/docs/persistence-changes/historical-formats/README.zh.md
+++ b/docs/persistence-changes/historical-formats/README.zh.md
@@ -32,7 +32,7 @@ description: "查找从 V0 到工作区写入器版本的每个 Session 格式
 | 1 | PR #3349 | [V1](v1.zh.md) | [JSON](v1.schema.json) | 54 / 415 |
 | 2 | `dsh-v0.1.3-alpha.2` | [V2](v2.zh.md) | [JSON](v2.schema.json) | 56 / 435 |
 | 3 | PR #4320 | [V3](v3.zh.md) | [JSON](v3.schema.json) | 60 / 467 |
-| 4 | 当前工作树 | [当前目录](../../persistence-catalog.zh.md) | [JSON](../../persistence-schema.json) | 65 / 622 |
+| 4 | 当前工作树 | [当前目录](../../persistence-catalog.zh.md) | [JSON](../../persistence-schema.json) | 65 / 626 |
 
 <!-- persistence-format-index:end -->
 
diff --git a/docs/persistence-schema.json b/docs/persistence-schema.json
index 9d08f764a6..aa46bc962e 100644
--- a/docs/persistence-schema.json
+++ b/docs/persistence-schema.json
@@ -5,7 +5,7 @@
     {"key":"JsonlHeaderLine","kind":"header","digest":"18ee62b8900a4c3d046700f05d7a4d49d6cab2a660a020c87481d1603dd8bd4f"},
     {"key":"SessionEventEnvelope","kind":"envelope","digest":"5776e5553ff2dfe3f5bc202dbb1e7c9f93e35a531aebb7764c23b2b6153b2ccc"},
     {"key":"event:agent-preset/selected","kind":"event","event":"agent-preset/selected","surface":false,"digest":"a10c17474eaf2ddab7095a099e0fe3d046fc18e56c3e344fc8894c05ff9ef97b"},
-    {"key":"event:agent/inbox/spliced","kind":"event","event":"agent/inbox/spliced","surface":false,"digest":"9e8043098fb89db6d7c92a92c70146c5c8d24fa88f733c687fa29e5e7a58ab30"},
+    {"key":"event:agent/inbox/spliced","kind":"event","event":"agent/inbox/spliced","surface":false,"digest":"cdf988172b589b230f2bce868489def1bb575eb0501076ac757a8f369ac5c64e"},
     {"key":"event:approval/asked","kind":"event","event":"approval/asked","surface":false,"digest":"3bfeb47b58606f4661904bc723da612782214c463d01e6d61cd6d6193d7374e1"},
     {"key":"event:approval/decided","kind":"event","event":"approval/decided","surface":false,"digest":"bb1ab3d08f49a9f3b265f844cd78d5c49813062a7b34b54904b426f85d0ff6e3"},
     {"key":"event:approval/policy","kind":"event","event":"approval/policy","surface":false,"digest":"26718e15e7e395bce9642dba5bbe09b3b1a4ce2213d20d566cd9207d7fc5fb78"},
@@ -18,7 +18,7 @@
     {"key":"event:compaction/start","kind":"event","event":"compaction/start","surface":false,"digest":"db874d463b0fdec77e9da1c4568f37cb70bd6596781eb93800db44fb8a116965"},
     {"key":"event:compaction/summary","kind":"event","event":"compaction/summary","surface":false,"digest":"e2f9a41e0989f54ed8cee80f8db2bcf9d60a5c810dc9d45b83fa050b9dce7602"},
     {"key":"event:deliverables/presented","kind":"event","event":"deliverables/presented","surface":false,"digest":"13d3d180f977bf78081d487ffa0ecb75857349bcab29a5a3fb48189fca2a6176"},
-    {"key":"event:developer/message","kind":"event","event":"developer/message","surface":true,"digest":"95acdbd066cf445d37092e5fdfe2e8717ef6ca1aed50f70e2e6037a6989a1f2f"},
+    {"key":"event:developer/message","kind":"event","event":"developer/message","surface":true,"digest":"70d2acdec1ebcfea56d02f7233ebb9ec0f7f494447fb952884c22c3afdc01d6f"},
     {"key":"event:feedback/message-delete","kind":"event","event":"feedback/message-delete","surface":false,"digest":"3ee93b06f3a125850337602bcdf155d2538c43a5c944ec55b1b3c365152d6796"},
     {"key":"event:feedback/message-put","kind":"event","event":"feedback/message-put","surface":false,"digest":"b5086d249e8502e9ead1d39156bb8d559bde7951cac0f14ce150345b4e42a2bf"},
     {"key":"event:feedback/record","kind":"event","event":"feedback/record","surface":false,"digest":"b54940ff095c17e874c5be03815f4c2145a256cf3a1d34dae4ab2f7769dfffe8"},
@@ -40,7 +40,7 @@
     {"key":"event:session-log-deepseek/delivery-accepted","kind":"event","event":"session-log-deepseek/delivery-accepted","surface":false,"digest":"d63b8b8ffad9c02fd80c43a17df4f240c1fe8118ecca9de34f9d5871838ab5b9"},
     {"key":"event:session/end-seed","kind":"event","event":"session/end-seed","surface":false,"digest":"5e6db6e24948d4a853c71cb9fabd252ad051ce93d4672c1266cf837c1c17b84e"},
     {"key":"event:session/title","kind":"event","event":"session/title","surface":false,"digest":"1b912703e2d64f91c99c675b8f805b01076c8325b905c1218ad81ef0b24909d5"},
-    {"key":"event:session/title-llm-request","kind":"event","event":"session/title-llm-request","surface":false,"digest":"eaa9125aec0fb28478096c46e73e21bf512ab0d84d826bfb41e7308707734cb5"},
+    {"key":"event:session/title-llm-request","kind":"event","event":"session/title-llm-request","surface":false,"digest":"2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c"},
     {"key":"event:step/end","kind":"event","event":"step/end","surface":false,"digest":"e0a787e6ec76c7c94fecbc501b489164ab0293db05bc947914077ad01e674f05"},
     {"key":"event:step/start","kind":"event","event":"step/start","surface":false,"digest":"4513e088d43e6c68425be30451b9f961cc264fe7318ca62681c41d4d78615986"},
     {"key":"event:subagent/catalog","kind":"event","event":"subagent/catalog","surface":false,"digest":"53750b9abf61efb7992b0aadc3e247ec927449c63266df28230fd1139f5590ac"},
@@ -62,7 +62,7 @@
     {"key":"event:tool/result","kind":"event","event":"tool/result","surface":true,"digest":"7c9f44e90a0058f4cc532ae20dad0c10afa6eba22e70a6c79fc79490bad64397"},
     {"key":"event:turn/end","kind":"event","event":"turn/end","surface":false,"digest":"0f8512903d94f57a4748fa1a2092e64342856796684e6b8343db685b192745ce"},
     {"key":"event:turn/start","kind":"event","event":"turn/start","surface":false,"digest":"aa0957eca50aeb28bcd2e6930b95809926edacb550c8c340ba526ba6b861b3d8"},
-    {"key":"event:user/message","kind":"event","event":"user/message","surface":true,"digest":"39adb7fce8475af6402acd925ea79697b3341c22422ac32833d71217d84e987f"},
+    {"key":"event:user/message","kind":"event","event":"user/message","surface":true,"digest":"5bb231bc5afdb532a6898a20604e76bf0c1db438bfcdc17d4847dceaddc02451"},
     {"key":"event:web/deepseek-search-llm-request","kind":"event","event":"web/deepseek-search-llm-request","surface":false,"digest":"0c556c9b9f2a96238a6b9bbb99e748206cbff2ed6203041c9571f04ae5802f52"},
     {"key":"event:working-directory/change","kind":"event","event":"working-directory/change","surface":false,"digest":"124aa62078ca3311353b39cc3bf6c75da281338be6bbf672f8b361d828cddca3"},
     {"key":"event:workspace/changes","kind":"event","event":"workspace/changes","surface":false,"digest":"e308ccf867a5398e316e0af8cb6ce238a8d33a63b9b384c8250a686786285f72"}
@@ -84,6 +84,7 @@
     {"digest":"09f3f8dc417f278257202714132f98ba7b52957d7b558c4a04456603890eb363","names":["packages/llm/llm/src/message.ts#SystemMessage"],"sources":["packages/llm/llm/src/message.ts:151"]},
     {"digest":"0a30c3be336cdd4f8f34e66543a3d46d611c43986edd9b3ce6cbb9b721d3b5d3","names":[],"sources":["packages/core/session/src/types.ts:209"]},
     {"digest":"0a8a062bc9c3c0d97fd97742262f2ea53dd32297f834e81114870d38ac3dc6da","names":[],"sources":[]},
+    {"digest":"0a92c5bdfa06c2e2615b777728f3aa95f408d43b9012e7b754568311251db623","names":[],"sources":["packages/experimental/liveshare/src/host/viewer-principal.ts:29"]},
     {"digest":"0aa62ab51b36c0e64b134bd03ba8725d758744180a1a447da49beaad194f219f","names":[],"sources":[]},
     {"digest":"0acd94fe8794574c9ae72c7855ee16d29c546096d4af760d16d1225385764555","names":["packages/llm/llm/src/types.ts#ReplayEnvelope"],"sources":["packages/llm/llm/src/types.ts:474"]},
     {"digest":"0af3ecfb8c60d416fc40a7cc4fb2c4851a8e46608b2b38ab9e510670c971aa1f","names":[],"sources":[]},
@@ -109,7 +110,6 @@
     {"digest":"124aa62078ca3311353b39cc3bf6c75da281338be6bbf672f8b361d828cddca3","names":[],"sources":[]},
     {"digest":"12a0cfa619ac4a5fc6c3e8e359c8dae15769edc61497a575935c78d5842f8e42","names":[],"sources":[]},
     {"digest":"12d5808fac1996b9b3c2afa806e03022252ba2d7b88f835862ae1896591f60c7","names":["packages/llm/llm/src/types.ts#ImageBlock"],"sources":["packages/llm/llm/src/types.ts:86"]},
-    {"digest":"12f9a5a7506bca46d6ef8e3c71826c4bf40e1389bfe0236cfffaea0c3fb367d2","names":[],"sources":["packages/core/session/src/types.ts:317"]},
     {"digest":"1379f0b72275994d20f1ddca2d60a96ab16ec80397ca9f1af21bdc67ba5c269c","names":[],"sources":[]},
     {"digest":"13d3d180f977bf78081d487ffa0ecb75857349bcab29a5a3fb48189fca2a6176","names":[],"sources":[]},
     {"digest":"14230f9b8b5797bb7e8c621fa636531cfbde2ffba1ef5f1fd058216ff21952a0","names":[],"sources":[]},
@@ -183,6 +183,7 @@
     {"digest":"2da725e554cd89301d829ed9dc45a572c3cd1b93b5e91d0d71f007976d8a0863","names":[],"sources":[]},
     {"digest":"2e3523541e942ef6cc9fbc5b91f242e0ca4c6ada479b79b96025b797f6e41f3f","names":["packages/schedule/schedule/src/types.ts#ScheduleChange"],"sources":["packages/schedule/schedule/src/types.ts:256"]},
     {"digest":"2e4debca12f2c449f96dc6574f3fbf2fb346193443114a241d01a236362ec48c","names":[],"sources":[]},
+    {"digest":"2e505098f9209e52eebd577f1a6f9d4e773ec4d78987aff28a7c786442b9f54c","names":[],"sources":[]},
     {"digest":"2eafefdc6f79a4922d68a787a09eaf4dd2b2369c3777fba4c05e800b5678ac8e","names":["packages/experimental/agent-team/src/types.ts#TeamMessageSnapshot"],"sources":["packages/experimental/agent-team/src/types.ts:129"]},
     {"digest":"2f1e6a7ebace43d727ae138ddcd352eb3813960009e5805b8c5ac84300c97716","names":["packages/attachment/attachment/src/types.ts#ImageMediaType"],"sources":["packages/attachment/attachment/src/types.ts:8"]},
     {"digest":"2f3f201c8846e19c20bb75c02280e3d4eb3c57509e4715f0c0a4d1d4f91a7a06","names":[],"sources":[]},
@@ -207,7 +208,6 @@
     {"digest":"383cf73ae4748e5beb281ae74857ba1ffb92ae01075b9fbf51af78b666007a8f","names":[],"sources":[]},
     {"digest":"3860b4757d512a2869be833acb0faf834335b1b056bf3f83df5474dce95f8fa6","names":[],"sources":["packages/llm/llm/src/assistant-stream.ts:35"]},
     {"digest":"390eed1028aba02774f14408647acec10ec5516e97d4f15ecde2b9989d5a69f2","names":["packages/feedback/message-feedback/src/types.ts#MessageFeedbackRating"],"sources":["packages/feedback/message-feedback/src/types.ts:17"]},
-    {"digest":"39adb7fce8475af6402acd925ea79697b3341c22422ac32833d71217d84e987f","names":[],"sources":[]},
     {"digest":"39cf2d3ff8bac81c62d49ac2ba38a095b18e80f3ad700819fa1f650a4e60197f","names":["packages/jobs/jobs/src/types.ts#JobToolCall"],"sources":["packages/jobs/jobs/src/types.ts:16"]},
     {"digest":"3b04790e08b35241ffa0d38f6d7e4f8788aa921341f6c0d7574a329397c59408","names":[],"sources":[]},
     {"digest":"3b1be838223869fe0a08210db85bf773796ed3f2373ac16555dff227cade0c48","names":[],"sources":[]},
@@ -226,6 +226,7 @@
     {"digest":"3ee93b06f3a125850337602bcdf155d2538c43a5c944ec55b1b3c365152d6796","names":[],"sources":[]},
     {"digest":"3f74ba74acd10644c1ed6947a411d8088bd2cfac74f61bb8540f96d68e31f004","names":[],"sources":[]},
     {"digest":"3fdf9582c3b5597df104d32d97dab6c6ee3a93794f3034ec6ada6272404ea27f","names":["packages/schedule/schedule/src/types.ts#LegacyAfterScheduleRecord"],"sources":["packages/schedule/schedule/src/types.ts:161"]},
+    {"digest":"4035903993dfee62cca2142c0ca51ab57075909ddee2817d0620daa97ac4d4ce","names":["packages/llm/llm/src/message.ts#UserMessage"],"sources":["packages/llm/llm/src/message.ts:162"]},
     {"digest":"408927267422a7b2beb6df354ff7c1406d929a5646554f48adf85eb8372f811c","names":[],"sources":[]},
     {"digest":"4208123b50df5006b181481ab45fcf1cde807b88d3fd4d340090bc2e202fac41","names":[],"sources":[]},
     {"digest":"42e0916e0dda5f6d1e7bb05d8514717147c036a79c9f36085683469516c1fd3f","names":[],"sources":[]},
@@ -252,13 +253,13 @@
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     "ec8b5ff7c77ca689": {"kind":"object","properties":[{"name":"kind","type":"b2245a906e13aa94","optional":false}],"indices":[]},
@@ -1313,6 +1320,7 @@
     "fe1a7acdeed4d0f5": {"kind":"object","properties":[{"name":"form","type":"e8de0f457fed5b9f","optional":false},{"name":"kind","type":"1f1385dbc3e875c0","optional":false},{"name":"summary","type":"4cd48f3e5108bd6e","optional":false}],"indices":[]},
     "fe792a6cd4304945": {"kind":"literal","value":"tool-workflow/run-end"},
     "fec5442b9ee4122e": {"kind":"object","properties":[{"name":"cacheReadTokens","type":"0657d3ca5ac4e7bf","optional":true},{"name":"cacheWriteTokens","type":"0657d3ca5ac4e7bf","optional":true},{"name":"inputTokens","type":"0657d3ca5ac4e7bf","optional":false},{"name":"outputTokens","type":"0657d3ca5ac4e7bf","optional":false},{"name":"reasoningTokens","type":"0657d3ca5ac4e7bf","optional":true},{"name":"totalTokens","type":"0657d3ca5ac4e7bf","optional":true}],"indices":[]},
-    "fee1caf8ab6a65c1": {"kind":"literal","value":"instructions"}
+    "fee1caf8ab6a65c1": {"kind":"literal","value":"instructions"},
+    "ff2cbb53582d1827": {"kind":"array","element":"c78b9097bfae83cd"}
   }
 }
diff --git a/docs/rescope.i18n.yaml b/docs/rescope.i18n.yaml
index f6ace06890..f418069ce3 100644
--- a/docs/rescope.i18n.yaml
+++ b/docs/rescope.i18n.yaml
@@ -6,8 +6,8 @@
   en: c8aa4d3384ea1306
   zh: 5aa030587d5b634d
 /vendored-package-rescope/name-mapping:
-  en: cc0f91dc4bb82605
-  zh: 81d5031752c6ea74
+  en: 239fa7993825ac62
+  zh: df35fa9f5ef42a05
 /vendored-package-rescope/what-the-rename-does-not-touch:
   en: 9bb7d09f8cccf695
   zh: 2a8f3f60ae5116f3
diff --git a/docs/rescope.md b/docs/rescope.md
index 2e25989742..85917bbfce 100644
--- a/docs/rescope.md
+++ b/docs/rescope.md
@@ -8,13 +8,13 @@ The Cordis framework and its foundation libraries are vendored under [`vendor/`]
 
 | Directory | Upstream name | Published name | Upstream version | Role |
 |---|---|---|---|---|
-| `vendor/cordis/` | `cordis` | `@deepseek-ai/cordis` | 4.0.0-rc.7 | Framework core: `Context`, `Service`, `Fiber`, events |
+| `vendor/cordis/` | `cordis` | `@deepseek-ai/cordis` | 4.0.0-rc.11 | Framework core: `Context`, `Service`, `Fiber`, events |
 | `vendor/cosmokit/` | `cosmokit` | `@deepseek-ai/cosmokit` | 1.8.1 | Shared utilities the framework and Schemastery build on |
 | `vendor/schemastery/` | `schemastery` | `@deepseek-ai/schemastery` | 3.18.0 | Config schemas (`Schema`) behind every plugin's `Config` |
 | `vendor/loader/` | `@cordisjs/plugin-loader` | `@deepseek-ai/cordis-plugin-loader` | 1.0.0-rc.5 | `cordis.yml` loading, plugin resolution, repository cache |
 | `vendor/include/` | `@cordisjs/plugin-include` | `@deepseek-ai/cordis-plugin-include` | 1.0.4 | Config includes and patch overlays |
 | `vendor/group/` | `@cordisjs/plugin-group` | `@deepseek-ai/cordis-plugin-group` | 1.0.0 | Nested plugin groups |
-| `vendor/timer/` | `@cordisjs/plugin-timer` | `@deepseek-ai/cordis-plugin-timer` | 1.1.2 | Disposal-aware timers on `ctx` |
+| `vendor/timer/` | `@cordisjs/plugin-timer` | `@deepseek-ai/cordis-plugin-timer` | 1.1.4 | Disposal-aware timers on `ctx` |
 | `vendor/hmr/` | `@cordisjs/plugin-hmr` | `@deepseek-ai/cordis-plugin-hmr` | 1.0.15 | Hot module replacement for plugins and config |
 | `vendor/logger-console/` | `@cordisjs/plugin-logger-console` | `@deepseek-ai/cordis-plugin-logger-console` | 1.0.0 | Console logger exporter |
 
diff --git a/docs/rescope.zh.md b/docs/rescope.zh.md
index 7b888ede0c..8d13ed539b 100644
--- a/docs/rescope.zh.md
+++ b/docs/rescope.zh.md
@@ -8,13 +8,13 @@ Cordis 框架及其基础库以源码形式 vendored 在 [`vendor/`](../vendor/R
 
 | 目录 | 上游名 | 发布名 | 上游版本 | 角色 |
 |---|---|---|---|---|
-| `vendor/cordis/` | `cordis` | `@deepseek-ai/cordis` | 4.0.0-rc.7 | 框架核心：`Context`、`Service`、`Fiber`、事件 |
+| `vendor/cordis/` | `cordis` | `@deepseek-ai/cordis` | 4.0.0-rc.11 | 框架核心：`Context`、`Service`、`Fiber`、事件 |
 | `vendor/cosmokit/` | `cosmokit` | `@deepseek-ai/cosmokit` | 1.8.1 | 框架与 Schemastery 共用的基础工具 |
 | `vendor/schemastery/` | `schemastery` | `@deepseek-ai/schemastery` | 3.18.0 | 配置 schema（`Schema`），每个插件的 `Config` 都基于它 |
 | `vendor/loader/` | `@cordisjs/plugin-loader` | `@deepseek-ai/cordis-plugin-loader` | 1.0.0-rc.5 | `cordis.yml` 装载、插件解析、repository 缓存 |
 | `vendor/include/` | `@cordisjs/plugin-include` | `@deepseek-ai/cordis-plugin-include` | 1.0.4 | 配置包含与 patch 叠加 |
 | `vendor/group/` | `@cordisjs/plugin-group` | `@deepseek-ai/cordis-plugin-group` | 1.0.0 | 嵌套插件分组 |
-| `vendor/timer/` | `@cordisjs/plugin-timer` | `@deepseek-ai/cordis-plugin-timer` | 1.1.2 | `ctx` 上随 disposal 回收的定时器 |
+| `vendor/timer/` | `@cordisjs/plugin-timer` | `@deepseek-ai/cordis-plugin-timer` | 1.1.4 | `ctx` 上随 disposal 回收的定时器 |
 | `vendor/hmr/` | `@cordisjs/plugin-hmr` | `@deepseek-ai/cordis-plugin-hmr` | 1.0.15 | 插件与配置的热替换 |
 | `vendor/logger-console/` | `@cordisjs/plugin-logger-console` | `@deepseek-ai/cordis-plugin-logger-console` | 1.0.0 | 控制台日志导出 |
 
diff --git a/docs/subsystems/README.i18n.yaml b/docs/subsystems/README.i18n.yaml
index 7f6b7de64c..069f78cc33 100644
--- a/docs/subsystems/README.i18n.yaml
+++ b/docs/subsystems/README.i18n.yaml
@@ -3,5 +3,5 @@
 # After editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/subsystems/README.md
 /subsystems:
-  en: dcbb2f834453e166
-  zh: d73f32a7baeec42d
+  en: 81b2c48d922de5a9
+  zh: cf0db50b34d2feb3
diff --git a/docs/subsystems/README.md b/docs/subsystems/README.md
index e14535c2f6..86e30a5519 100644
--- a/docs/subsystems/README.md
+++ b/docs/subsystems/README.md
@@ -52,6 +52,7 @@ One page per subsystem of the DeepSeek Harness: what it is, the data structures
 | [voice-input.md](voice-input.md) | experimental named recognizers, transient audio and revision-guarded draft insertion |
 | [translation.md](translation.md) | experimental anonymous text translation and explicit provider requests |
 | [agent-team.md](agent-team.md) | Agent Teams: implicit Lead identity, named continuable teammates, direct peer inbox delivery, and shared task DAG |
+| [liveshare.md](liveshare.md) | the opt-in LiveShare bundle: nested share modes, a fork's ceiling and durability, enforcement installation, and the constraint a shared Session's externally driven turns run under |
 | [claude-code-mods.md](claude-code-mods.md) | Claude Code mods through the experimental bridge: every event, `$` member, chain rule, drawing feature, and example mod that differs from Claude Code |
 | [web.md](web.md) | the web access seam: `WebSearchRequest`/`Result`, `WebFetchRequest`/`Result`, `WebFetchBody`, provider availability, `WebError` |
 | [spill.md](spill.md) | the spill storage seam: `SaveTextSpill`, `SpillOwner`/`SpillSource`, `SpillRef`, the branded `SpillLocator` |
diff --git a/docs/subsystems/README.zh.md b/docs/subsystems/README.zh.md
index 6239e5f2c0..289a6a71f3 100644
--- a/docs/subsystems/README.zh.md
+++ b/docs/subsystems/README.zh.md
@@ -52,6 +52,7 @@
 | [voice-input.md](voice-input.zh.md) | 实验性具名语音识别、临时音频和受版本保护的草稿插入 |
 | [translation.md](translation.zh.md) | 实验性免登录文本翻译与显式 Provider 请求 |
 | [agent-team.md](agent-team.zh.md) | Agent Teams：隐式 Lead 身份、具名 continuable teammate、直接 peer inbox 投递 与共享任务 DAG |
+| [liveshare.md](liveshare.zh.md) | 可选的 LiveShare bundle：嵌套分享模式、fork 的上限与持久性、上限安装，以及共享会话外部驱动轮次所受的约束 |
 | [claude-code-mods.md](claude-code-mods.zh.md) | 经实验性桥接运行的 Claude Code 模组：与 Claude Code 不同的每个事件、`$` 成员、链规则、绘制特性与示例模组 |
 | [web.md](web.zh.md) | Web 访问 seam：`WebSearchRequest`/`Result`、`WebFetchRequest`/`Result`、`WebFetchBody`、提供方可用性、`WebError` |
 | [spill.md](spill.zh.md) | spill 存储 seam：`SaveTextSpill`、`SpillOwner`/`SpillSource`、`SpillRef`、品牌类型 `SpillLocator` |
diff --git a/docs/subsystems/boot.i18n.yaml b/docs/subsystems/boot.i18n.yaml
index 7754efcc03..a1b1b47591 100644
--- a/docs/subsystems/boot.i18n.yaml
+++ b/docs/subsystems/boot.i18n.yaml
@@ -6,8 +6,8 @@
   en: 962b4398c9052959
   zh: 14471c340a9f6e60
 /profile-management/management-records:
-  en: 8813788cd8a86903
-  zh: 3c30cb180fc1a33d
+  en: 2cf6a1f62dcc1de6
+  zh: b6d519b60f6f5c79
 /profile-management/market-records:
   en: 3dfc62d837d61b9b
   zh: ec223be315f3dc62
diff --git a/docs/subsystems/boot.md b/docs/subsystems/boot.md
index 157ef5da64..48b9b179e0 100644
--- a/docs/subsystems/boot.md
+++ b/docs/subsystems/boot.md
@@ -18,7 +18,7 @@ The [boot package group](../../packages/boot/README.md) owns launcher-provided p
 
 `PluginRegistries` carries the configured first registry, `null` for the one pnpm's own configuration names, the fallbacks asked after it, and `resolved`, the URL pnpm's own configuration names or `null` while unread. `InspectOptions.registry` names the registry a lookup asks first.
 
-`ChangeResult.changed` reports a disk edit independently of `application`: `applied`, `restart-required`, `overridden` or `failed`. Optional `error` carries a localizable code and external diagnostic. `packageResult` records the pnpm exit code, bounded output, truncation flag and complete diagnostic log path, plus `timedOut` when the manager terminated a run that stopped printing. A terminated run is classified `timeout` whatever exit status the signal left behind, so installation and removal report failure instead of success and no further registry is asked. `pendingBuilds` lists undecided packages across the profile; `approvedBuilds` records the names granted permission by this operation; `registries` lists the registries an installation asked, in order; `bundle` and `version` name the package a finished installation added and its manifest version; `failedAt` says whether the last failed run could not reach the registry it asked or the host a git or tarball spec is fetched from.
+`ChangeResult.changed` reports a disk edit independently of `application`: `applied`, `restart-required`, `overridden` or `failed`. Optional `error` carries a localizable code and external diagnostic. `packageResult` records the run's exit status, bounded output, truncation flag and complete diagnostic log path, plus `timedOut` when the manager terminated a run that stopped printing or the GitHub connection check hit its deadline; a terminated run records the coerced status 1 because its process returned none. A terminated run is classified `timeout` whatever exit status the signal left behind, so installation and removal report failure instead of success and no further registry is asked. `pendingBuilds` lists undecided packages across the profile; `approvedBuilds` records the names granted permission by this operation; `registries` lists the registries an installation asked, in order; `bundle` and `version` name the package a finished installation added and its manifest version; `failedAt` says whether the last failed run could not reach the registry it asked or the host a git or tarball spec is fetched from.
 
 ## Market records
 
@@ -297,7 +297,8 @@ Manage profile files and apply their declared reload lifecycle.
 /**
  * Install a package using the same pnpm implementation as dsh plugin. GitHub
  * repositories get a connection check bounded by githubConnectionTimeoutMs before pnpm starts;
- * only network failures or timeouts stop installation, while pnpm owns authentication and transport fallback. An
+ * only network failures or timeouts stop installation, and a stop streams the check's diagnostic
+ * as the installation's install-log run under its request id, while pnpm owns authentication and transport fallback. An
  * HTTP(S) Git URL on another host is installed over SSH instead when access probes bounded by gitTransportTimeoutMs
  * find that only SSH can read it. A run
  * that fails, is cancelled, or adds a package without a bundle patch restores
@@ -532,11 +533,11 @@ Source: [`packages/boot/plugin-manager/src/types.ts`](../../packages/boot/plugin
 
 #### `plugin-manager/install-log` — emit
 
-One chunk of a pnpm run's output, streamed as the run produces it.
+One chunk of an installation run's output, streamed as the run produces it.
 
 ```ts cordis-catalog
 /**
- * One chunk of a pnpm run's output, streamed as the run produces it.
+ * One chunk of an installation run's output, streamed as the run produces it.
  * @mode emit
  * @param chunk - the chunk and the run it belongs to.
  */
diff --git a/docs/subsystems/boot.zh.md b/docs/subsystems/boot.zh.md
index 1e5f78cf0e..d80c05fb53 100644
--- a/docs/subsystems/boot.zh.md
+++ b/docs/subsystems/boot.zh.md
@@ -18,7 +18,7 @@
 
 `PluginRegistries` 携带配置的第一个注册表（`null` 即 pnpm 自身配置指定的那个）、随后依次询问的备选注册表，以及 `resolved`——pnpm 自身配置指向的 URL，未读到时为 `null`。`InspectOptions.registry` 指定一次查询首先询问的注册表。
 
-`ChangeResult.changed` 报告磁盘修改，独立于 `application`：`applied`、`restart-required`、`overridden` 或 `failed`。可选的 `error` 包含可本地化的错误码和外部诊断。`packageResult` 记录 pnpm 退出码、有界输出、截断标志及完整诊断日志路径；当管理器终止了一个停止打印的运行，还记录 `timedOut`。被终止的运行不论信号留下什么退出状态都归类为 `timeout`，因此安装与删除都报告失败而非成功，也不会再询问下一个注册表。`pendingBuilds` 列出整个 profile 尚未决定的包；`approvedBuilds` 记录本次操作授予权限的包名；`registries` 按顺序列出一次安装问过的注册表；`bundle` 与 `version` 给出完成的安装新增的包及其清单版本；`failedAt` 说明最后一次失败的运行连不上的是所问的注册表，还是 git 或 tarball spec 自身拉取的主机。
+`ChangeResult.changed` 报告磁盘修改，独立于 `application`：`applied`、`restart-required`、`overridden` 或 `failed`。可选的 `error` 包含可本地化的错误码和外部诊断。`packageResult` 记录运行的退出状态、有界输出、截断标志及完整诊断日志路径；当管理器终止了一个停止打印的运行，或 GitHub 连接检查到达期限，还记录 `timedOut`；被终止的运行记录强制填入的状态 1，因为它的进程没有返回任何状态。被终止的运行不论信号留下什么退出状态都归类为 `timeout`，因此安装与删除都报告失败而非成功，也不会再询问下一个注册表。`pendingBuilds` 列出整个 profile 尚未决定的包；`approvedBuilds` 记录本次操作授予权限的包名；`registries` 按顺序列出一次安装问过的注册表；`bundle` 与 `version` 给出完成的安装新增的包及其清单版本；`failedAt` 说明最后一次失败的运行连不上的是所问的注册表，还是 git 或 tarball spec 自身拉取的主机。
 
 ## 市场记录
 
@@ -297,7 +297,8 @@ Manage profile files and apply their declared reload lifecycle.
 /**
  * Install a package using the same pnpm implementation as dsh plugin. GitHub
  * repositories get a connection check bounded by githubConnectionTimeoutMs before pnpm starts;
- * only network failures or timeouts stop installation, while pnpm owns authentication and transport fallback. An
+ * only network failures or timeouts stop installation, and a stop streams the check's diagnostic
+ * as the installation's install-log run under its request id, while pnpm owns authentication and transport fallback. An
  * HTTP(S) Git URL on another host is installed over SSH instead when access probes bounded by gitTransportTimeoutMs
  * find that only SSH can read it. A run
  * that fails, is cancelled, or adds a package without a bundle patch restores
@@ -532,11 +533,11 @@ Source: [`packages/boot/plugin-manager/src/types.ts`](../../packages/boot/plugin
 
 #### `plugin-manager/install-log` — emit
 
-One chunk of a pnpm run's output, streamed as the run produces it.
+One chunk of an installation run's output, streamed as the run produces it.
 
 ```ts cordis-catalog
 /**
- * One chunk of a pnpm run's output, streamed as the run produces it.
+ * One chunk of an installation run's output, streamed as the run produces it.
  * @mode emit
  * @param chunk - the chunk and the run it belongs to.
  */
diff --git a/docs/subsystems/core.i18n.yaml b/docs/subsystems/core.i18n.yaml
index 02e7a5d4f6..a2b168f3fd 100644
--- a/docs/subsystems/core.i18n.yaml
+++ b/docs/subsystems/core.i18n.yaml
@@ -30,8 +30,8 @@
   en: 057db6d8bf356c0f
   zh: 1441b39e5142b0bf
 /core/repo-wide-type-patterns/the-map-derived-union-pattern:
-  en: 84c039e929edb897
-  zh: 84241bb993f23ef2
+  en: 87a19311e2a97270
+  zh: 8df92c72793e8275
 /core/repo-wide-type-patterns/branded-ids:
   en: 10f8ac0f97e7c54a
   zh: 75cd2311aabfe464
diff --git a/docs/subsystems/core.md b/docs/subsystems/core.md
index 86df19aa94..48ff2ce633 100644
--- a/docs/subsystems/core.md
+++ b/docs/subsystems/core.md
@@ -450,12 +450,13 @@ declare module '@deepseek-ai/dsh-llm' {
 }
 ```
 
-Five canonical maps use this pattern; a plugin author extends these:
+Six canonical maps use this pattern; a plugin author extends these:
 
 | Map | Package | Derives | Catalog |
 |---|---|---|---|
 | `ContentBlockMap` | dsh-llm | `ContentBlock` | [llm-streaming.md](llm-streaming.md#content-blocks-and-messages) |
 | `MessageSourceMap` | dsh-llm | `MessageSource` | [llm-streaming.md](llm-streaming.md#content-blocks-and-messages) |
+| `LlmRequestPurposeMap` | dsh-llm | `LlmRequestPurpose` | [llm-streaming.md](llm-streaming.md#the-model-request-and-result) |
 | `FinishReasonMap` | dsh-llm | `FinishReason` | [llm-streaming.md](llm-streaming.md#the-model-request-and-result) |
 | `TurnEndReasonMap` | dsh-session | `TurnEndReason` | [session.md](session.md) |
 | `SessionEventMap` | dsh-session | `SessionEvent` | [session.md](session.md) |
diff --git a/docs/subsystems/core.zh.md b/docs/subsystems/core.zh.md
index db4bb206f5..19acf51b51 100644
--- a/docs/subsystems/core.zh.md
+++ b/docs/subsystems/core.zh.md
@@ -460,12 +460,13 @@ declare module '@deepseek-ai/dsh-llm' {
 }
 ```
 
-五个规范 map 使用此模式；插件作者扩展它们：
+六个规范 map 使用此模式；插件作者扩展它们：
 
 | Map | 包 | 派生 | 目录 |
 |---|---|---|---|
 | `ContentBlockMap` | dsh-llm | `ContentBlock` | [llm-streaming.md](llm-streaming.zh.md#content-blocks-and-messages) |
 | `MessageSourceMap` | dsh-llm | `MessageSource` | [llm-streaming.md](llm-streaming.zh.md#content-blocks-and-messages) |
+| `LlmRequestPurposeMap` | dsh-llm | `LlmRequestPurpose` | [llm-streaming.zh.md](llm-streaming.zh.md#the-model-request-and-result) |
 | `FinishReasonMap` | dsh-llm | `FinishReason` | [llm-streaming.md](llm-streaming.zh.md#the-model-request-and-result) |
 | `TurnEndReasonMap` | dsh-session | `TurnEndReason` | [session.md](session.zh.md) |
 | `SessionEventMap` | dsh-session | `SessionEvent` | [session.md](session.zh.md) |
diff --git a/docs/subsystems/forge.i18n.yaml b/docs/subsystems/forge.i18n.yaml
index 53a7964033..92bc2298cd 100644
--- a/docs/subsystems/forge.i18n.yaml
+++ b/docs/subsystems/forge.i18n.yaml
@@ -12,8 +12,8 @@
   en: 26ccfa2e342e3e67
   zh: fe6cc2a622757c48
 /forges/change-request-actions:
-  en: 00e4490e416099d2
-  zh: 5724d08b6ae230f7
+  en: 87d2c81d9514267f
+  zh: 1daf31c5b0127a1c
 /forges/session-bindings:
   en: 13dfd36f2166bba0
   zh: a369434f52f04d57
diff --git a/docs/subsystems/forge.md b/docs/subsystems/forge.md
index 4bb2251a52..2a3cdf2087 100644
--- a/docs/subsystems/forge.md
+++ b/docs/subsystems/forge.md
@@ -45,6 +45,8 @@ type ChangeRequestKey = Branded<'ChangeRequestKey'>
 interface ForgeProvider {
   /** Forge family name stored in every repository this provider returns. */
   readonly forge: string
+  /** Publish a comment or completed review. Omission declares that this provider cannot write reviews. */
+  submitReview?(ref: ChangeRequestRef, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult>
   /** Map a Git remote URL to its repository, or undefined when this provider does not serve it. */
   repositoryFromRemote(url: string): ForgeRepository | undefined
   /** Map a change request web URL to its reference, or undefined when this provider does not serve it. */
@@ -56,6 +58,8 @@ interface ForgeProvider {
     refs: readonly ChangeRequestRef[],
     signal: AbortSignal,
   ): Promise<ReadonlyMap<ChangeRequestKey, ChangeRequestSnapshot | ForgeFailure>>
+  /** Read all checks for one change request on demand; omission declares that only the polling preview is available. */
+  fetchChecks?(ref: ChangeRequestRef, signal: AbortSignal): Promise<ChangeRequestSnapshot | ForgeFailure>
   /** Find open change requests whose head is `branch` in `repository`, excluding the default branch and forks. */
   findByHead(repository: ForgeRepository, branch: string, signal: AbortSignal): Promise<readonly ChangeRequestRef[]>
   /** Report whether the provider can reach `host` with current credentials. */
@@ -246,6 +250,37 @@ interface ForgeActionFailure {
 }
 ```
 
+`ctx.forge.submitReview` delegates an explicit comment or completed review to the provider. A provider that omits this capability returns unsupported. Consumers retain pending drafts and reconcile unknown write outcomes before resubmitting.
+
+```ts type-equiv
+/** One inline comment addressed to the old or new side of a pull request diff. */
+interface ForgeLineComment {
+  readonly path: string
+  readonly side: 'L' | 'R'
+  readonly startLine: number
+  readonly endLine: number
+  readonly body: string
+}
+```
+
+```ts type-equiv
+/** A single published comment or one completed review containing all pending comments. */
+type ForgeReviewRequest = {
+  /** Commit the user reviewed; providers must check it before writing and address that commit explicitly. */
+  readonly headSha: string
+} & (
+  | { readonly kind: 'comment'; readonly comment: ForgeLineComment }
+  | { readonly kind: 'review'; readonly event: 'comment' | 'approve' | 'request-changes'; readonly body: string; readonly comments: readonly ForgeLineComment[] }
+)
+```
+
+```ts type-equiv
+/** Result of a review write; unknown outcomes must be checked on the host before another submission. */
+type ForgeReviewResult =
+  | { readonly ok: true; readonly url: string }
+  | { readonly ok: false; readonly code: 'unsupported' | 'stale' | 'failed' | 'unknown'; readonly message: string }
+```
+
 ## Session bindings
 
 `ctx.forgeSession` derives each Session's bindings from its own log: `gh pr create` results bind the URLs they print, `gh pr view`, `gh pr edit`, and `gh pr checkout` calls bind the change request they act on, and `git push` results trigger head-branch discovery through `ctx.forge`; the panel also reports the branch its checkout tracks for the same discovery. Track, dismiss, and discovery actions are `plugin:forge-session/binding` records, which stay outside the model-visible conversation. The `forgeChangeRequests` projection's client view, which the Session summary carries, lists the bindings without their status. The [Session binding README](../../packages/experimental/forge-session/README.md#use-this-package) owns the recognition and discovery rules.
@@ -735,6 +770,15 @@ async markReady(ref: ChangeRequestRef, signal: AbortSignal): Promise<ForgeAction
  */
 async merge(ref: ChangeRequestRef, request: MergeRequest, signal: AbortSignal): Promise<ForgeActionFailure | undefined>
 
+/**
+ * Read complete check details independently of periodic polling.
+ * @param ref - change request served by a registered provider.
+ * @param signal - cancellation of the detail view.
+ * @returns a complete snapshot or the provider's failure; unsupported providers return unavailable.
+ * @throws on cancellation, provider disposal, or expiry of this read's own `fetchTimeoutMs` deadline.
+ */
+async fetchChecks(ref: ChangeRequestRef, signal: AbortSignal): Promise<ChangeRequestSnapshot | ForgeFailure>
+
 /**
  * Read the changes of a change request as its host computes them.
  * @param ref - change request served by a registered provider.
@@ -744,6 +788,15 @@ async merge(ref: ChangeRequestRef, request: MergeRequest, signal: AbortSignal):
  */
 async diff(ref: ChangeRequestRef, signal: AbortSignal): Promise<string | ForgeFailure>
 
+/**
+ * Publish one comment or a completed review, then refresh the watched status.
+ * @param ref - change request served by a registered provider.
+ * @param request - explicitly selected commit, comments, and review decision.
+ * @param signal - request cancellation.
+ * @returns a publication URL or a failure, including an unknown write outcome.
+ */
+async submitReview(ref: ChangeRequestRef, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult>
+
 /**
  * Read the text of one file at a commit of a change request's repository.
  * @param ref - change request served by a registered provider.
@@ -798,7 +851,7 @@ Source: [`packages/experimental/forge/src/index.ts`](../../packages/experimental
 
 ### `ctx.forgePanel` — `ForgePanelController`
 
-Serves the forge panel. Following a Session inspects the checkout of its current directory read-only in the Session's execution world, recognizes the code host of the upstream remote or `origin`, probes sign-in for that host, and polls the Session's bound change requests through `ctx.forge` until the last follower of that Session leaves. A worktree request makes the panel create a branch and checkout through an optional `ctx.worktrees` and enter it while the Session's first message waits in the inbox, or at the first step proposal of a message no wait took. After a failed or stopped attempt the message keeps waiting for another attempt or for the request to be withdrawn. A message also waits while the worktree the Session works in is gone, until that worktree is checked out again or left for the source checkout. Changes to a Session's checkout run as Agent maintenance, so a message that arrives meanwhile waits for them.
+Serves the forge panel. Following a Session inspects the checkout of its current directory using the Session's permissions and execution world, recognizes the code host of the upstream remote or `origin`, probes sign-in for that host, and polls the Session's bound change requests through `ctx.forge` until the last follower of that Session leaves. A worktree request makes the panel create a branch and checkout through an optional `ctx.worktrees` and enter it while the Session's first message waits in the inbox, or at the first step proposal of a message no wait took. After a failed or stopped attempt the message keeps waiting for another attempt or for the request to be withdrawn. A message also waits while the worktree the Session works in is gone, until that worktree is checked out again or left for the source checkout. Changes to a Session's checkout run as Agent maintenance, so a message that arrives meanwhile waits for them.
 
 ```ts cordis-catalog
 /**
@@ -862,13 +915,14 @@ Serves the forge panel. Following a Session inspects the checkout of its current
 
 /**
  * Read the changes one scope covers in the checkout of the Session's
- * current directory, with Git confined to the Session's read-only sandbox.
+ * current directory, with Git using the Session's sandbox policy.
  * @param session - Session whose checkout is read.
  * @param scope - which changes to read.
  * @param signal - request cancellation.
  * @returns the files, the base of the `branch` scope, and the untracked files left out.
  * @throws `forgePanel/not-a-checkout` outside a checkout; `forgePanel/no-fork-point` for the `branch`
- * scope of a checkout without one; `forgePanel/diff-too-large` over `maxDiffBytes`; the Git error when Git fails.
+ * scope of a checkout without one; `forgePanel/filter-config-failed` when filter configuration cannot be read
+ * completely, before any comparison; `forgePanel/diff-too-large` over `maxDiffBytes`; the Git error when Git fails.
  */
 @Remote async localDiff(session: Session, scope: ForgeLocalScope, signal: AbortSignal): Promise<ForgeLocalDiff>
 
@@ -885,6 +939,18 @@ Serves the forge panel. Following a Session inspects the checkout of its current
  */
 @Remote async localText(session: Session, scope: ForgeLocalScope, path: string, signal: AbortSignal): Promise<string>
 
+/**
+ * Load complete checks for the change request whose list the user opened.
+ * @param session - Session retaining the visible binding.
+ * @param url - binding URL.
+ * @param headSha - commit displayed by the card; a different head rejects the result.
+ * @param signal - cancellation when the list closes.
+ * @returns the complete snapshot at the displayed head.
+ * @throws `forgePanel/not-bound` for an invisible binding, `forgePanel/stale-head` for a moved head,
+ * or `forgePanel/checks-failed` when the provider cannot complete the read.
+ */
+@Remote async changeRequestChecks(session: Session, url: string, headSha: string, signal: AbortSignal): Promise<ChangeRequestSnapshot>
+
 /**
  * Read the changes of a change request of a Session as its code host
  * computes them, at the head commit of its latest status. A patch already
@@ -915,6 +981,16 @@ Serves the forge panel. Following a Session inspects the checkout of its current
  */
 @Remote async changeRequestText(session: Session, url: string, commit: string, path: string, signal: AbortSignal): Promise<string>
 
+/**
+ * Publish a line comment or completed review for a visible Session binding.
+ * @param session - Session retaining the change request.
+ * @param url - visible binding URL.
+ * @param request - reviewed head, ranges, plain text, and explicit review decision.
+ * @param signal - request cancellation.
+ * @returns confirmed publication or a typed failure; unknown outcomes require reconciliation on the host.
+ */
+@Remote async submitReview(session: Session, url: string, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult>
+
 /**
  * Mark a draft change request of a Session ready for review; the change
  * request is polled again once the host answers.
diff --git a/docs/subsystems/forge.zh.md b/docs/subsystems/forge.zh.md
index 0819fa9f6c..5c78d7bb02 100644
--- a/docs/subsystems/forge.zh.md
+++ b/docs/subsystems/forge.zh.md
@@ -45,6 +45,8 @@ type ChangeRequestKey = Branded<'ChangeRequestKey'>
 interface ForgeProvider {
   /** Forge family name stored in every repository this provider returns. */
   readonly forge: string
+  /** Publish a comment or completed review. Omission declares that this provider cannot write reviews. */
+  submitReview?(ref: ChangeRequestRef, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult>
   /** Map a Git remote URL to its repository, or undefined when this provider does not serve it. */
   repositoryFromRemote(url: string): ForgeRepository | undefined
   /** Map a change request web URL to its reference, or undefined when this provider does not serve it. */
@@ -56,6 +58,8 @@ interface ForgeProvider {
     refs: readonly ChangeRequestRef[],
     signal: AbortSignal,
   ): Promise<ReadonlyMap<ChangeRequestKey, ChangeRequestSnapshot | ForgeFailure>>
+  /** Read all checks for one change request on demand; omission declares that only the polling preview is available. */
+  fetchChecks?(ref: ChangeRequestRef, signal: AbortSignal): Promise<ChangeRequestSnapshot | ForgeFailure>
   /** Find open change requests whose head is `branch` in `repository`, excluding the default branch and forks. */
   findByHead(repository: ForgeRepository, branch: string, signal: AbortSignal): Promise<readonly ChangeRequestRef[]>
   /** Report whether the provider can reach `host` with current credentials. */
@@ -246,6 +250,37 @@ interface ForgeActionFailure {
 }
 ```
 
+`ctx.forge.submitReview` 将明确指定的评论或完整评审交给 provider；未实现此能力的 provider 返回不支持。消费者保存待提交草稿，并在再次提交前核对结果不明的写操作。
+
+```ts type-equiv
+/** One inline comment addressed to the old or new side of a pull request diff. */
+interface ForgeLineComment {
+  readonly path: string
+  readonly side: 'L' | 'R'
+  readonly startLine: number
+  readonly endLine: number
+  readonly body: string
+}
+```
+
+```ts type-equiv
+/** A single published comment or one completed review containing all pending comments. */
+type ForgeReviewRequest = {
+  /** Commit the user reviewed; providers must check it before writing and address that commit explicitly. */
+  readonly headSha: string
+} & (
+  | { readonly kind: 'comment'; readonly comment: ForgeLineComment }
+  | { readonly kind: 'review'; readonly event: 'comment' | 'approve' | 'request-changes'; readonly body: string; readonly comments: readonly ForgeLineComment[] }
+)
+```
+
+```ts type-equiv
+/** Result of a review write; unknown outcomes must be checked on the host before another submission. */
+type ForgeReviewResult =
+  | { readonly ok: true; readonly url: string }
+  | { readonly ok: false; readonly code: 'unsupported' | 'stale' | 'failed' | 'unknown'; readonly message: string }
+```
+
 ## Session 绑定
 
 `ctx.forgeSession` 从每个 Session 自己的日志派生其绑定：`gh pr create` 的结果绑定其输出的 URL，`gh pr view`、`gh pr edit` 与 `gh pr checkout` 调用绑定它们所操作的变更请求，`git push` 的结果通过 `ctx.forge` 触发按 head 分支的发现；面板也会报告其检出所跟踪的分支，触发同样的发现。track、dismiss 与发现操作都是 `plugin:forge-session/binding` 插件记录，位于模型可见对话之外。`forgeChangeRequests` 投影的客户端视图随 Session 摘要下发，列出绑定但不含其状态。识别与发现规则见 [Session 绑定 README](../../packages/experimental/forge-session/README.zh.md#use-this-package)。
@@ -735,6 +770,15 @@ async markReady(ref: ChangeRequestRef, signal: AbortSignal): Promise<ForgeAction
  */
 async merge(ref: ChangeRequestRef, request: MergeRequest, signal: AbortSignal): Promise<ForgeActionFailure | undefined>
 
+/**
+ * Read complete check details independently of periodic polling.
+ * @param ref - change request served by a registered provider.
+ * @param signal - cancellation of the detail view.
+ * @returns a complete snapshot or the provider's failure; unsupported providers return unavailable.
+ * @throws on cancellation, provider disposal, or expiry of this read's own `fetchTimeoutMs` deadline.
+ */
+async fetchChecks(ref: ChangeRequestRef, signal: AbortSignal): Promise<ChangeRequestSnapshot | ForgeFailure>
+
 /**
  * Read the changes of a change request as its host computes them.
  * @param ref - change request served by a registered provider.
@@ -744,6 +788,15 @@ async merge(ref: ChangeRequestRef, request: MergeRequest, signal: AbortSignal):
  */
 async diff(ref: ChangeRequestRef, signal: AbortSignal): Promise<string | ForgeFailure>
 
+/**
+ * Publish one comment or a completed review, then refresh the watched status.
+ * @param ref - change request served by a registered provider.
+ * @param request - explicitly selected commit, comments, and review decision.
+ * @param signal - request cancellation.
+ * @returns a publication URL or a failure, including an unknown write outcome.
+ */
+async submitReview(ref: ChangeRequestRef, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult>
+
 /**
  * Read the text of one file at a commit of a change request's repository.
  * @param ref - change request served by a registered provider.
@@ -798,7 +851,7 @@ Source: [`packages/experimental/forge/src/index.ts`](../../packages/experimental
 
 ### `ctx.forgePanel` — `ForgePanelController`
 
-Serves the forge panel. Following a Session inspects the checkout of its current directory read-only in the Session's execution world, recognizes the code host of the upstream remote or `origin`, probes sign-in for that host, and polls the Session's bound change requests through `ctx.forge` until the last follower of that Session leaves. A worktree request makes the panel create a branch and checkout through an optional `ctx.worktrees` and enter it while the Session's first message waits in the inbox, or at the first step proposal of a message no wait took. After a failed or stopped attempt the message keeps waiting for another attempt or for the request to be withdrawn. A message also waits while the worktree the Session works in is gone, until that worktree is checked out again or left for the source checkout. Changes to a Session's checkout run as Agent maintenance, so a message that arrives meanwhile waits for them.
+Serves the forge panel. Following a Session inspects the checkout of its current directory using the Session's permissions and execution world, recognizes the code host of the upstream remote or `origin`, probes sign-in for that host, and polls the Session's bound change requests through `ctx.forge` until the last follower of that Session leaves. A worktree request makes the panel create a branch and checkout through an optional `ctx.worktrees` and enter it while the Session's first message waits in the inbox, or at the first step proposal of a message no wait took. After a failed or stopped attempt the message keeps waiting for another attempt or for the request to be withdrawn. A message also waits while the worktree the Session works in is gone, until that worktree is checked out again or left for the source checkout. Changes to a Session's checkout run as Agent maintenance, so a message that arrives meanwhile waits for them.
 
 ```ts cordis-catalog
 /**
@@ -862,13 +915,14 @@ Serves the forge panel. Following a Session inspects the checkout of its current
 
 /**
  * Read the changes one scope covers in the checkout of the Session's
- * current directory, with Git confined to the Session's read-only sandbox.
+ * current directory, with Git using the Session's sandbox policy.
  * @param session - Session whose checkout is read.
  * @param scope - which changes to read.
  * @param signal - request cancellation.
  * @returns the files, the base of the `branch` scope, and the untracked files left out.
  * @throws `forgePanel/not-a-checkout` outside a checkout; `forgePanel/no-fork-point` for the `branch`
- * scope of a checkout without one; `forgePanel/diff-too-large` over `maxDiffBytes`; the Git error when Git fails.
+ * scope of a checkout without one; `forgePanel/filter-config-failed` when filter configuration cannot be read
+ * completely, before any comparison; `forgePanel/diff-too-large` over `maxDiffBytes`; the Git error when Git fails.
  */
 @Remote async localDiff(session: Session, scope: ForgeLocalScope, signal: AbortSignal): Promise<ForgeLocalDiff>
 
@@ -885,6 +939,18 @@ Serves the forge panel. Following a Session inspects the checkout of its current
  */
 @Remote async localText(session: Session, scope: ForgeLocalScope, path: string, signal: AbortSignal): Promise<string>
 
+/**
+ * Load complete checks for the change request whose list the user opened.
+ * @param session - Session retaining the visible binding.
+ * @param url - binding URL.
+ * @param headSha - commit displayed by the card; a different head rejects the result.
+ * @param signal - cancellation when the list closes.
+ * @returns the complete snapshot at the displayed head.
+ * @throws `forgePanel/not-bound` for an invisible binding, `forgePanel/stale-head` for a moved head,
+ * or `forgePanel/checks-failed` when the provider cannot complete the read.
+ */
+@Remote async changeRequestChecks(session: Session, url: string, headSha: string, signal: AbortSignal): Promise<ChangeRequestSnapshot>
+
 /**
  * Read the changes of a change request of a Session as its code host
  * computes them, at the head commit of its latest status. A patch already
@@ -915,6 +981,16 @@ Serves the forge panel. Following a Session inspects the checkout of its current
  */
 @Remote async changeRequestText(session: Session, url: string, commit: string, path: string, signal: AbortSignal): Promise<string>
 
+/**
+ * Publish a line comment or completed review for a visible Session binding.
+ * @param session - Session retaining the change request.
+ * @param url - visible binding URL.
+ * @param request - reviewed head, ranges, plain text, and explicit review decision.
+ * @param signal - request cancellation.
+ * @returns confirmed publication or a typed failure; unknown outcomes require reconciliation on the host.
+ */
+@Remote async submitReview(session: Session, url: string, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult>
+
 /**
  * Mark a draft change request of a Session ready for review; the change
  * request is polled again once the host answers.
diff --git a/docs/subsystems/liveshare.i18n.yaml b/docs/subsystems/liveshare.i18n.yaml
new file mode 100644
index 0000000000..e1ba0426b4
--- /dev/null
+++ b/docs/subsystems/liveshare.i18n.yaml
@@ -0,0 +1,25 @@
+# Bilingual-pair consistency record for liveshare.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write docs/subsystems/liveshare.md
+/liveshare:
+  en: 196b06ffccedbdef
+  zh: 0ca8df19400afc40
+/liveshare/enabling-and-visibility:
+  en: f6144f8e81359a9c
+  zh: 1924869ac7475b59
+/liveshare/share-modes:
+  en: 985cb7a5c20c1cbd
+  zh: a5f5372dddfefaa3
+/liveshare/forks-and-their-ceiling:
+  en: 357a2147f48f5bac
+  zh: a8a297603f984ede
+/liveshare/retries-recovery-and-revocation:
+  en: 6b1346e73ab6eab9
+  zh: 888cfc08c6bc8522
+/liveshare/constraining-a-shared-session:
+  en: 289e8955320935f6
+  zh: 7038c4283a4f33c6
+/liveshare/viewer-states:
+  en: b5b4d4d83dbb58c2
+  zh: 498f26938dc872df
diff --git a/docs/subsystems/liveshare.md b/docs/subsystems/liveshare.md
new file mode 100644
index 0000000000..78c59825ee
--- /dev/null
+++ b/docs/subsystems/liveshare.md
@@ -0,0 +1,158 @@
+# LiveShare
+
+English | [中文](liveshare.zh.md)
+
+The opt-in LiveShare bundle (`@deepseek-ai/dsh-experimental-liveshare`) lets one owner share a single Session with an external viewer through the separate Liveshare server. A viewer never receives the owner's tools: the owner host reads each viewer request itself, dispatches it as that viewer's own Peer, whose `share-viewer` principal the Gateway decides through the [remote access](../../packages/api/remote-access/README.md) policy this package registers, and constrains everything a shared Session runs on the viewer's behalf to the workspace the share granted. The [package README](../../packages/experimental/liveshare/README.md) owns configuration, the client faces, and the limitations; the [Owner note](../../.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.md) owns the security posture behind them.
+
+Source: [`packages/experimental/liveshare/src/host/fork-enforcement.ts`](../../packages/experimental/liveshare/src/host/fork-enforcement.ts)
+
+<a id="enabling-and-visibility"></a>
+
+## Enabling and visibility
+
+The package ships with dsh but stays out of the plugin manager's lists until a profile enables it. A profile either inserts the two rows the bundle declares into its own `cordis.patch.yml`, which keeps the bundle unselected while its plugins run, or selects the bundle in `dsh.profile.bundles`. The [package README](../../packages/experimental/liveshare/README.md#default-visibility-and-enabling) owns the exact entries and the placeholders a deployment replaces.
+
+The plugin manager lists the card under **Experimental plugins** only while at least one row the bundle declares runs, and removing the rows, disabling them, or deselecting the bundle takes it out of both that list and **More** again. Both routes apply on the profile's next recomposition rather than mid-task: with HMR enabled the profile is re-read, and without it the change waits for the next start.
+
+## Share modes
+
+`ViewerSessionMode` has two tiers, and both name a sandbox: `view` reads the shared Session and drives its loop inside a read-only sandbox in the granted workspace, so it never writes a file; it may use the read and search surface (`read`, `read_image`, `glob`, `grep`, `present`) and the tools with no local file effect (`todo_write`, `skill`, `web_search`, `web_fetch`), with every declared path checked against the grant. `write` runs in a bounded writable sandbox that also modifies files inside that workspace by adding bounded `edit` and `write`, under the Host's write ceiling. Forking is not a tier: the share carries its own `allowsFork` switch, independent of the tier. Attachment upload is not a tier either: every Session a share serves the reader accepts files, whatever the tier and the fork switch. The withdrawn `fork-readonly` name is not read back as `view`: a persisted owner record that names it is rejected when the owner state loads. Nothing infers `write`, and a share whose mode the host cannot establish stays readable but is never driven.
+
+## Forks and their ceiling
+
+A fork creates a new Session the viewer owns and leaves the source untouched. Fork authorization checks the share, its fork switch, expiry, viewer admission, source identity, and the requested boundary. `READ_ONLY_FORK_CEILING` permits the view surface — `read`, `read_image`, `glob`, `grep`, `present`, `todo_write`, `skill`, `web_search`, `web_fetch` — and `WRITE_FORK_CEILING` adds the Host’s bounded `edit` and `write`. Each path-bearing tool gets a confined replacement that resolves every declared path against the granted root and delegates with its canonical form; `bash`, `pwsh`, `cua`, `plugin_manager`, the `schedule_*` tools, and every name the surface does not list are refused.
+
+Each child is recorded with the share that authorized it, the trusted viewer the Liveshare server asserted, and the boundary it started from, so a viewer's list shows only its own children and a removed share stops them. A child is driven only after its ceiling is installed on its own scope: `ForkRegistry` refuses every prompt for a child whose guard is not installed (`fork-ceiling-uninstalled`), and installation is verified per child rather than per host. A child whose scope refuses the confined replacement or the limit is refused instead of being published with the deployment's own tools.
+
+Cold source and child activation uses the Host’s ordinary Agent lookup, not a Remote `session/prepare` endpoint. Serial `agent/created` listeners install scoped enforcement before queued work is released; an already live Agent needs its own installation check. `forkLineage` is a LiveShare-owned, per-viewer UI projection, not a Session-summary field, durable log event, or permission grant.
+
+## Retries, recovery, and revocation
+
+One logical fork request may be sent more than once. Its identity binds the trusted viewer, the share, the source, and the caller's operation id; the boundary is compared against that identity rather than folded into it, so a retry repeats the child it already produced, an identity naming another boundary conflicts instead of silently receiving the earlier child, and the reservation is durable before any child exists. The host records the child the owner's fork answer returned, and a retry of a recorded operation replays that answer. The owner's `SessionForkRequest` mints the child id, so a host that dies between creating the child and recording it cannot name that child on retry and creates a second one; closing that window needs a Session Controller request that accepts a caller-supplied child identity.
+
+Child tool guards recheck the share’s current mode, expiry, viewer admission, and revocation record. Viewer withdrawal cancels affected child work and pending calls. A `write` to `view` downgrade denies later writes through the write guard without granting any new tool, and does not promise immediate cancellation of a running turn. Removing a share revokes recorded children and stops the Session's running turn; the source enforcement layer is released once no share over the Session is left, and with Agent disposal. Revoked children retain their logs, and the source’s owner-visible history is never rewritten.
+
+## Constraining a shared Session
+
+Every share lets its viewer drive the *source* Session through the normal prompt path, and any share at either tier installs the bounded sandbox while it is active. `installSourceSessionAccess` registers a confined replacement for every view-surface tool the deployment ships in that Session's own scope, and bounded `edit` and `write` replacements whenever any share over the Session allows writing. The layer is mounted on the Session, but it confines only the turns a share viewer starts: `agent/pre-step` records, in Host memory, whether a turn's admitted input names a share viewer, and the guard and the replacements read that answer for every execution of that turn. A viewer-started turn runs those replacements and nothing else; a turn the owner starts keeps the Session's own tools, including `bash` and its unrestricted filesystem tools. The answer is decided when the turn is admitted and never written to the Session log; a restart recomputes it from the next admitted step. An owner's steering input inside a viewer's turn stays confined with it. Stopping every share over the Session disposes the layer, which restores the Session's own tools; narrowing the last write share to `view` re-installs the read-only layer.
+
+The installation reports whether the source Session is actually confined. A deployment without the `read` tool, or a scope that refuses that replacement's registration, leaves the guard in place and reports the refusal; a tool whose own replacement failed stays refused while the rest of the surface runs, and the reader refuses the prompt with `source-write-unavailable`: no viewer-started turn of a shared Session is driven against the owner's own tools because a limit could not be installed.
+
+Each operation re-reads the Relay grants of the shares that keep the Session drivable, and each reading is synchronous with the tool call it authorizes, so input queued past the grant that admitted it cannot act on that stale admission. The layer is per Session: several shares over one Session share the one installation, and a share that narrows or ends changes what the layer permits — its bounded write is refused once no active share may write, and the layer is released once no share is left. The Host does not attribute a running turn to the viewer that admitted it, so ending one share's grant stops the Session's running turn rather than singling out that viewer's work; the in-memory viewer-start marker only decides which tool surface that turn runs.
+
+Confined file tools resolve every path their own arguments declare, check that the granted root contains each result, and delegate with the target’s canonical path. A pathless `glob` or `grep` searches the Session’s working directory, which the replacement supplies and checks like a named path; a `present` call checks every file it lists; the tools with no local file effect are delegated unchanged. Bounded edits run the same containment check, use `fs/edit-intent`, and publish the version `editText` returns; bounded writes use `fs/write-intent` and publish the version `writeText` returns. After the asynchronous intent wait, the Host resolves the current Session sandbox policy and rechecks share authority. It passes that policy as the fifth `editText` or `writeText` argument, after `signal`, so the sandboxing backend fences the mutation by it. Containment is checked by path, so a directory inside the grant that a local process replaces with a symlink between the check and the open can redirect the operation; anchoring operations to a directory handle is deferred to a separate change.
+
+A viewer's source prompt and source stop both travel the standard Gateway dispatch under the `share-viewer` policy's source-write role: the policy admits them while the share's tier is established and its Session is confined, and the owner's own Session controller then stops whatever turn the Session is running. Cancellation performs no per-viewer comparison, so a reader's stop of the shared Session also ends a turn the owner started. The [Session Controller](../../packages/api/session-controller/README.md) reads `remoteAccess.allows()` again inside `prompt` immediately before delivery and in the same synchronous step as a `cancel`, so a viewer whose access ends after the Gateway admitted its call delivers or cancels nothing. Queued external source input refreshes Liveshare server authority in `agent/pre-step`; missing authority rejects the step before a model request.
+
+<a id="viewer-states"></a>
+
+## Viewer states
+
+A viewer read that ends in a refusal names its own condition rather than one failure for every cause: the Liveshare server answers a missing link, a share the owner stopped, an expired share, an owner whose machine holds no route, an expired sign-in, a reader who has not asked, a request still waiting, a request the owner refused, and a notification the owner never received each with their own status and code, and a page that cannot reach the Liveshare server states that itself. `VIEWER_STATE_ANSWERS` in `@deepseek-ai/dsh-experimental-liveshare-protocol` is the whole vocabulary, and the [shared protocol](../../packages/experimental/liveshare-protocol/README.md) owns the answer each condition carries. No answer widens what a viewer may read: an offline owner, a stopped share, and a refused request all deny.
+
+The workspace feed a viewer's page renders is filtered through the same policy as its session list: a workspace is delivered while it holds the shared Session or a branch that viewer made from it, and its membership and its manual order keep only those. A workspace that loses them leaves the feed when that workspace or the workspace order next changes, and the stream then replaces the reader's baseline; an access change alone sends no frame. A reader therefore sees the owner's workspace names and grouping around the one Session it was granted, never the rest of the owner's workspaces.
+
+Viewer streams bind the opening actor across polling, replacement, and cancellation. Session notifications, control baselines, and workspace membership expose only the source and that actor’s children: the Gateway forwards a reader only the `api-session/*` notifications the policy allows on those Sessions, and the Session and Workspace controllers filter their lists and streams through the same policy; interactive approvals and questions stay on the Host. Refused reads open no upstream subscription. Expiry and revocation cancel affected pending calls and streams; unpolled streams are reclaimed after 120 seconds. Worker IPC responses and cancellations must match the request’s token, share id, Liveshare server id, and original socket or worker generation; late answers cannot settle a replacement request.
+
+The Liveshare server’s optional `share-access-state` capability publishes a complete, versioned authority snapshot on connection and committed mutations, including mutations on another Liveshare server instance. Authenticated `GET /__liveshare/requests` returns the same fields. The Host clears cached authority on connection loss, rejects stale revisions within a generation, and fences asynchronous refreshes against generation changes. Missing complete authority refuses admission; this does not establish immediate distributed stop semantics.
+
+<!-- BEGIN GENERATED cordis-surface (gen-cordis-catalog.ts) — do not edit between markers -->
+
+<a id="cordis-surface"></a>
+
+## Cordis API
+
+Generated from source by `scripts/gen-cordis-catalog.ts` (verified fresh by `pnpm run verify-cordis-catalog` in doc-sync; regenerate with `pnpm run gen-cordis-catalog`) — the language sides differ only in locale-specific paired document paths. Signature blocks use a `ts cordis-catalog` fence and keep the original source JSDoc; dispatch modes are defined in the [primer](../cordis-primer.md#dispatch-modes), and the framework-inherited `ctx` API lives in [cordis-api/inherited.md](../cordis-api/inherited.md).
+
+<a id="ctxliveshareshares--liveshareshares"></a>
+
+### `ctx.liveshareShares` — `LiveshareShares`
+
+Owner-only Remote surface over the share-management operations.
+
+The Gateway decides each call through remote access, so a `share-viewer` Peer is refused before a method runs; the owner Peer reaches the one implementation that owns each share-management side effect. `create` takes its Session as the `sessionId` of its single request object, so the Session resource kind's default resolver names that Session for the call without a reader declared here.
+
+```ts cordis-catalog
+/**
+ * Publish one Session and store the share.
+ * @param request - Session, title, access, lifetime, and both switches the owner chose.
+ * @returns The created share's link and stored values.
+ */
+@Remote('create') create(request: CreateShareRequest): Promise<CreatedShare>
+
+/**
+ * Refresh titles and Liveshare server authority, then list this host's shares.
+ * @returns Every share this host publishes.
+ */
+@Remote('list') list(): Promise<OwnerShareList>
+
+/**
+ * Stop one share locally, revoke its forks, and delete its row on the Liveshare server when reachable.
+ * @param request - Share to stop.
+ * @returns Whether the row on the Liveshare server still needs a retry.
+ */
+@Remote('stop') stop(request: StopShareRequest): Promise<StopShareResult>
+
+/**
+ * Change one share's tier, fork switch, or both.
+ * @param request - Share and the switches to change.
+ * @returns The permissions the share now carries.
+ */
+@Remote('updatePermissions') updatePermissions(request: UpdateSharePermissionsRequest): Promise<SharePermissions>
+
+/**
+ * Replace one share's exposed plugin endpoints.
+ * @param request - Share and the selection to store.
+ * @returns The capability selection the share now carries.
+ */
+@Remote('setCapabilities') setCapabilities(request: SetShareCapabilitiesRequest): Promise<ShareCapabilities>
+
+/**
+ * Read the endpoints plugins currently offer.
+ * @returns The live offer list.
+ */
+@Remote('capabilities') capabilities(): ShareCapabilityOffers
+
+/**
+ * Read the Liveshare server address the owner saved.
+ * @returns The current Liveshare server state, with both address fields absent while none is saved.
+ */
+@Remote('relay') relay(): OwnerRelayState
+
+/**
+ * Choose the Liveshare server address later shares publish to.
+ * @param request - Normalized address or null to clear the saved one.
+ * @returns The Liveshare server state after the change.
+ */
+@Remote('setRelay') setRelay(request: SetRelayRequest): Promise<OwnerRelayState>
+
+/**
+ * Report this host's owner identity for one Liveshare server address.
+ * @param request - Address to report, or the effective one when absent.
+ * @returns The owner identity status, without the credential.
+ */
+@Remote('identity') identity(request: OwnerIdentityRequest): Promise<OwnerIdentityStatus>
+
+/**
+ * Read the Liveshare server's durable audit trail for one share.
+ * @param request - Share whose audit is read.
+ * @returns The audit events, or a structured failure when the Liveshare server cannot answer.
+ */
+@Remote('audit') audit(request: ShareAuditRequest): Promise<ShareAudit>
+
+/**
+ * Check that the effective Liveshare server answers at all.
+ * @returns The anonymous connectivity result.
+ */
+@Remote('testRelay') testRelay(): Promise<RelayConnectivityView>
+
+/**
+ * Register one throwaway share to check whether this host may publish.
+ * @param request - Session the throwaway registration names.
+ * @returns The Liveshare server's decision about this host's credential.
+ */
+@Remote('testPublish') testPublish(request: TestPublishRequest): Promise<RelayPublishView>
+```
+
+Source: [`packages/experimental/liveshare/src/host/share-remote.ts`](../../packages/experimental/liveshare/src/host/share-remote.ts)
+<!-- END GENERATED cordis-surface -->
diff --git a/docs/subsystems/liveshare.zh.md b/docs/subsystems/liveshare.zh.md
new file mode 100644
index 0000000000..e794ce64cf
--- /dev/null
+++ b/docs/subsystems/liveshare.zh.md
@@ -0,0 +1,158 @@
+# LiveShare
+
+[English](liveshare.md) | 中文
+
+可选的 LiveShare bundle（`@deepseek-ai/dsh-experimental-liveshare`）让一位所有者通过独立的 Liveshare 服务端 把一个会话分享给外部 viewer。viewer 永远拿不到所有者的工具：所有者宿主机自己读取 viewer 的每个请求，以该 viewer 自己的 Peer 分派它，Gateway 依据本包注册的 [remote access](../../packages/api/remote-access/README.zh.md) 策略判定该 Peer 的 `share-viewer` principal，并把共享会话代表 viewer 运行的一切限制在分享所授予的工作区内。[包 README](../../packages/experimental/liveshare/README.zh.md)负责配置、客户端界面与限制；[Owner 说明](../../.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.zh.md)负责其背后的安全姿态。
+
+源码：[`packages/experimental/liveshare/src/host/fork-enforcement.ts`](../../packages/experimental/liveshare/src/host/fork-enforcement.ts)
+
+<a id="enabling-and-visibility"></a>
+
+## 启用与可见性
+
+本包随 dsh 一同交付，但在 profile 启用它之前不会出现在插件管理器的任何列表中。profile 可以把自己的 `cordis.patch.yml` 插入组合包声明的两条行，这样组合包本身保持未选中而插件照常运行；也可以改在 `dsh.profile.bundles` 中选中该组合包。[包 README](../../packages/experimental/liveshare/README.zh.md#default-visibility-and-enabling)负责具体条目和部署需要替换的占位符。
+
+插件管理器只有在组合包声明的行至少有一条在运行时才把卡片列在**实验性插件**下；删除这些行、把它们置为 disabled，或取消选中组合包，卡片会再次从该列表和**更多**页消失。两条路线都在 profile 下一次重新组合时生效，而不是在当前任务中途：启用 HMR 时会重新读取 profile，未启用时则等下一次启动。
+
+## 分享模式
+
+`ViewerSessionMode` 只有两档，两档都对应一个沙箱：`view` 读取共享会话，并在授予工作区的只读沙箱里驱动它的 loop，绝不写文件；它可以使用读取与检索面（`read`、`read_image`、`glob`、`grep`、`present`）和无本地文件副作用的工具（`todo_write`、`skill`、`web_search`、`web_fetch`），每个声明路径都按授予范围检查。`write` 在受宿主写入上限约束的可写沙箱里运行，通过有界 `edit` 与 `write` 修改该工作区内的文件。fork 不是一档：分享自带独立的 `allowsFork` 开关，与档位无关。附件上传也不是一档：分享向读者提供的每条会话都接受文件，与档位和分叉开关无关。已退场的 `fork-readonly` 名称不会读回为 `view`：持久化的 owner 记录若写有该值，owner 状态加载时会直接拒绝。任何环节都不会推断出 `write`，而宿主机无法确定模式的分享仍可读取，但绝不会被驱动。
+
+## fork 与其上限
+
+fork 创建查看者拥有的新会话，源会话保持不变。Fork 授权检查分享、其 fork 开关、有效期、查看者准入、源身份与请求的边界。`READ_ONLY_FORK_CEILING` 允许读取与检索面——`read`、`read_image`、`glob`、`grep`、`present`、`todo_write`、`skill`、`web_search`、`web_fetch`——，`WRITE_FORK_CEILING` 增加 Host 的有界 `edit` 与 `write`。每个带路径的工具都有受限替代定义：解析它声明的所有路径并按授予根目录检查，再以规范路径委托；`bash`、`pwsh`、`cua`、`plugin_manager`、`schedule_*` 及工具面未列出的名字一律拒绝。
+
+每个分叉会话都会记录授权它的分享、Liveshare 服务端断言的可信 viewer，以及它起始的边界，因此 viewer 的列表只显示它自己的分叉会话，被移除的分享会终止它们。只有在分叉会话自身作用域上安装好上限之后它才会被驱动：`ForkRegistry` 会拒绝每个上限未安装的分叉会话的 prompt（`fork-ceiling-uninstalled`），且安装是按分叉会话逐个验证，而非按宿主机验证。若分叉会话作用域拒绝注册受限替换或上限，就拒绝该分叉会话，而不是让它带着部署自身的工具发布。
+
+冷态源会话与分叉会话通过 Host 常规 Agent lookup 激活，而非 Remote `session/prepare` 端点。串行 `agent/created` 监听器在排队工作放行前安装作用域执行限制；已经在线的 Agent 仍需检查自身安装。`forkLineage` 是 LiveShare 自有的按查看者 UI 投影，不是会话摘要字段、持久日志事件或权限授予。
+
+## 重试、恢复与撤销
+
+同一个逻辑 fork 请求可能被发送多次。其身份绑定可信 viewer、分享、源会话与调用方的操作 id；边界是与该身份比较而非折入其中，因此重试会重复它已经产生的分叉会话，同一身份指向另一个边界会冲突而不是悄悄拿到更早的分叉会话，且预留在任何分叉会话存在之前就已持久化。宿主机记录 owner 的 fork 应答返回的分叉会话，重试已记录的操作会重放该应答。owner 的 `SessionForkRequest` 自己生成分叉会话 id，因此在创建分叉会话与记录它之间崩溃的宿主机重试时无法指名该分叉会话，会再创建一个；要关闭这一窗口，需要 Session Controller 的请求接受调用方提供的分叉会话身份。
+
+分叉会话工具守卫重新检查分享当前模式、有效期、查看者准入与撤销记录。撤回查看者会取消受影响的分叉会话工作与未决调用。`write` 降级为 `view` 后，写入守卫拒绝后续写入，不授予任何新工具，也不承诺立即取消正在运行的轮次。移除分享撤销已记录分叉会话并停止该会话正在运行的轮次；源执行层在该会话不再有任何分享时释放，并随 Agent 释放。已撤销分叉会话保留日志，源会话所有者可见历史绝不改写。
+
+## 约束共享会话
+
+每个分享都让它的 viewer 通过正常 prompt 路径驱动*源*会话，任一档位的分享在活跃期间都会安装有界沙箱。`installSourceSessionAccess` 在该会话自身作用域中为部署提供的每个读取与检索面工具注册受限替代，并在任一同会话分享允许写入时再注册有界 `edit` 与 `write` 替代。执行层挂在会话上，但只约束分享查看者发起的轮次：`agent/pre-step` 在 Host 内存中记录一个轮次的已准入输入是否带有 share-viewer principal，守卫与替代定义对该轮次的每次执行读取这一结论。查看者发起的轮次只能运行这些替代定义；所有者自己发起的轮次保留会话原生工具，包括 `bash` 与不受限的文件工具。该结论在轮次准入时确定，不写入会话日志；重启后从下一个准入步骤重新计算。所有者在查看者轮次中追加的输入仍留在该受限轮次内。该会话的所有分享停止后执行层被释放，会话恢复自己的工具；最后一个可写分享降为 `view` 时重装只读层。
+
+安装结果报告源会话是否真正受到限制。没有 `read` 工具的部署或拒绝该替代注册的作用域会保留守卫并报告失败；某个工具自己的替代注册失败时，该工具保持拒绝，其余工具面照常运行。读取处理器以 `source-write-unavailable` 拒绝消息：限制未安装时，共享会话中查看者发起的轮次不会用所有者工具驱动。
+
+每次操作都会重新读取维持该会话可驱动的分享的 Relay 授权，且读取与其授权的工具调用在同一同步步骤内完成，因此排队超过其准入授权的输入无法凭过期准入行动。执行层按会话安装：同一会话的多个分享共用一个安装；分享收窄或结束时改变该层允许的操作——没有任何活跃分享可写时拒绝有界写入，会话不再有分享时释放执行层。Host 不把正在运行的轮次归属给准入它的查看者，因此结束某个分享的授权会停止该会话正在运行的轮次，而不是只挑出该查看者的工作；内存中的查看者轮次标记只决定该轮次运行哪套工具面。
+
+受限文件工具解析其自身参数声明的每个路径，检查获授根目录包含每个目标，再以目标的规范路径委托。无路径的 `glob` 或 `grep` 搜索会话的工作目录，由替代定义补齐并按命名路径一样检查；`present` 调用检查它列出的每个文件；无本地文件副作用的工具原样委托。有界编辑执行同样的包含检查，使用 `fs/edit-intent`，并发布 `editText` 返回的版本；有界写入使用 `fs/write-intent`，并发布 `writeText` 返回的版本。异步意图等待后，Host 解析当前会话沙箱策略并重新检查分享授权。该策略作为 `editText` 或 `writeText` 的第五个参数，位于 `signal` 之后，由沙箱后端据此限制变更。包含关系按路径检查，若本地进程在检查与打开之间把获授范围内的目录换成符号链接，操作可能被改指别处；基于目录句柄锚定操作留待单独变更引入。
+
+查看者对源会话的提示词与停止都按标准 Gateway 分派走 `share-viewer` 策略的源会话写入角色：分享档位已确立且其会话受沙箱限制时策略放行，随后由所有者自己的会话控制器停止该会话当前运行的轮次。取消不按查看者比对，因此读者对共享会话的停止也会结束所有者发起的轮次。[Session Controller](../../packages/api/session-controller/README.zh.md) 在 `prompt` 投递前、以及与 `cancel` 同一同步步骤内再次读取 `remoteAccess.allows()`，因此 Gateway 放行调用之后访问权才结束的查看者不会投递或取消任何内容。排队的外部源输入在 `agent/pre-step` 刷新 Liveshare 服务端授权；缺少授权时在模型请求之前拒绝步骤。
+
+<a id="viewer-states"></a>
+
+## viewer 状态
+
+一次以拒绝结束的 viewer 读取会指明它自己的状态，而不是让所有原因共用一种失败：链接不存在、owner 已停止分享、分享已过期、owner 的机器没有路由、登录已过期、读者尚未申请、申请仍在等待、申请被 owner 拒绝、owner 从未收到通知，每种都有各自的 HTTP 状态与错误码；页面联系不上 Liveshare 服务端时由页面自己陈述。`@deepseek-ai/dsh-experimental-liveshare-protocol` 中的 `VIEWER_STATE_ANSWERS` 就是这份词汇表，每种状态对应的答案由 [共享协议](../../packages/experimental/liveshare-protocol/README.zh.md) 维护。没有任何一种答案会扩大 viewer 能读到的内容：owner 离线、分享已停止、申请被拒，三者都是拒绝。
+
+viewer 页面渲染所用的工作区流与会话列表经同一策略过滤：只要工作区还持有共享会话或该 viewer 自己创建的分支就会下发，其成员与手工顺序只保留这些。失去它们的工作区要到该工作区或工作区顺序下次变化时才离开工作区流，届时流替换读者的基线；仅访问变化不会发送帧。因此读者看到的是围绕它被授予的那一个会话的 owner 工作区名称与分组，而不是 owner 其余的工作区。
+
+查看流在轮询、替换与取消时均绑定打开它的主体。会话通知、控制基线与工作区成员只暴露源会话及该主体的分叉会话：Gateway 只向读者转发策略在这些会话上允许的 `api-session/*` 通知，Session 与 Workspace 控制器也经同一策略过滤其列表和流；交互审批与提问保留在 Host。被拒绝的读取不创建上游订阅。过期与撤权取消受影响的未决调用和流；120 秒未轮询的流被回收。Worker IPC 响应与取消必须匹配请求 token、分享 ID、Liveshare 服务端 ID 及原始 socket 或 worker generation；迟到响应不能结算替换请求。
+
+Liveshare 服务端可选的 `share-access-state` 能力在连接和已提交变更时发布完整、带版本的授权快照，包括其他 Liveshare 服务端实例提交的变更。鉴权 `GET /__liveshare/requests` 返回同一组字段。Host 在连接丢失时清空缓存授权，在同一 generation 内拒绝过期修订，并对异步刷新检查 generation。缺少完整授权时拒绝准入；这不构成立即的分布式停止语义保证。
+
+<!-- BEGIN GENERATED cordis-surface (gen-cordis-catalog.ts) — do not edit between markers -->
+
+<a id="cordis-surface"></a>
+
+## Cordis API
+
+Generated from source by `scripts/gen-cordis-catalog.ts` (verified fresh by `pnpm run verify-cordis-catalog` in doc-sync; regenerate with `pnpm run gen-cordis-catalog`) — the language sides differ only in locale-specific paired document paths. Signature blocks use a `ts cordis-catalog` fence and keep the original source JSDoc; dispatch modes are defined in the [primer](../cordis-primer.zh.md#dispatch-modes), and the framework-inherited `ctx` API lives in [cordis-api/inherited.md](../cordis-api/inherited.md).
+
+<a id="ctxliveshareshares--liveshareshares"></a>
+
+### `ctx.liveshareShares` — `LiveshareShares`
+
+Owner-only Remote surface over the share-management operations.
+
+The Gateway decides each call through remote access, so a `share-viewer` Peer is refused before a method runs; the owner Peer reaches the one implementation that owns each share-management side effect. `create` takes its Session as the `sessionId` of its single request object, so the Session resource kind's default resolver names that Session for the call without a reader declared here.
+
+```ts cordis-catalog
+/**
+ * Publish one Session and store the share.
+ * @param request - Session, title, access, lifetime, and both switches the owner chose.
+ * @returns The created share's link and stored values.
+ */
+@Remote('create') create(request: CreateShareRequest): Promise<CreatedShare>
+
+/**
+ * Refresh titles and Liveshare server authority, then list this host's shares.
+ * @returns Every share this host publishes.
+ */
+@Remote('list') list(): Promise<OwnerShareList>
+
+/**
+ * Stop one share locally, revoke its forks, and delete its row on the Liveshare server when reachable.
+ * @param request - Share to stop.
+ * @returns Whether the row on the Liveshare server still needs a retry.
+ */
+@Remote('stop') stop(request: StopShareRequest): Promise<StopShareResult>
+
+/**
+ * Change one share's tier, fork switch, or both.
+ * @param request - Share and the switches to change.
+ * @returns The permissions the share now carries.
+ */
+@Remote('updatePermissions') updatePermissions(request: UpdateSharePermissionsRequest): Promise<SharePermissions>
+
+/**
+ * Replace one share's exposed plugin endpoints.
+ * @param request - Share and the selection to store.
+ * @returns The capability selection the share now carries.
+ */
+@Remote('setCapabilities') setCapabilities(request: SetShareCapabilitiesRequest): Promise<ShareCapabilities>
+
+/**
+ * Read the endpoints plugins currently offer.
+ * @returns The live offer list.
+ */
+@Remote('capabilities') capabilities(): ShareCapabilityOffers
+
+/**
+ * Read the Liveshare server address the owner saved.
+ * @returns The current Liveshare server state, with both address fields absent while none is saved.
+ */
+@Remote('relay') relay(): OwnerRelayState
+
+/**
+ * Choose the Liveshare server address later shares publish to.
+ * @param request - Normalized address or null to clear the saved one.
+ * @returns The Liveshare server state after the change.
+ */
+@Remote('setRelay') setRelay(request: SetRelayRequest): Promise<OwnerRelayState>
+
+/**
+ * Report this host's owner identity for one Liveshare server address.
+ * @param request - Address to report, or the effective one when absent.
+ * @returns The owner identity status, without the credential.
+ */
+@Remote('identity') identity(request: OwnerIdentityRequest): Promise<OwnerIdentityStatus>
+
+/**
+ * Read the Liveshare server's durable audit trail for one share.
+ * @param request - Share whose audit is read.
+ * @returns The audit events, or a structured failure when the Liveshare server cannot answer.
+ */
+@Remote('audit') audit(request: ShareAuditRequest): Promise<ShareAudit>
+
+/**
+ * Check that the effective Liveshare server answers at all.
+ * @returns The anonymous connectivity result.
+ */
+@Remote('testRelay') testRelay(): Promise<RelayConnectivityView>
+
+/**
+ * Register one throwaway share to check whether this host may publish.
+ * @param request - Session the throwaway registration names.
+ * @returns The Liveshare server's decision about this host's credential.
+ */
+@Remote('testPublish') testPublish(request: TestPublishRequest): Promise<RelayPublishView>
+```
+
+Source: [`packages/experimental/liveshare/src/host/share-remote.ts`](../../packages/experimental/liveshare/src/host/share-remote.ts)
+<!-- END GENERATED cordis-surface -->
diff --git a/docs/subsystems/llm-streaming.md b/docs/subsystems/llm-streaming.md
index 70adbab81e..cf8d4c8310 100644
--- a/docs/subsystems/llm-streaming.md
+++ b/docs/subsystems/llm-streaming.md
@@ -642,8 +642,21 @@ type RequestMessage = Message | RequestUserInput
 ```
 
 ```ts type-equiv
-/** A single model request, fully assembled. */
-interface GenerateOptions {
+/** Auxiliary request purposes declared by their producer packages. */
+interface LlmRequestPurposeMap {}
+```
+
+```ts type-equiv
+/** Declared auxiliary request purpose; ordinary conversation requests leave it absent. */
+type LlmRequestPurpose = Extract<keyof LlmRequestPurposeMap, string>
+```
+
+```ts type-equiv
+/**
+ * A single model request, fully assembled.
+ * @typeParam Purpose - declared purpose keys for callers; forwarding adapters may accept `string`.
+ */
+interface GenerateOptions<Purpose extends string = LlmRequestPurpose> {
   /** Registered provider route selecting the adapter instance. */
   provider: string
   model: string
@@ -684,7 +697,7 @@ interface GenerateOptions {
    * map the purpose to model-hidden transport metadata. Ordinary conversation
    * requests leave it unset.
    */
-  purpose?: 'compaction' | 'session-title'
+  purpose?: Purpose
 }
 ```
 
diff --git a/docs/subsystems/llm-streaming.zh.md b/docs/subsystems/llm-streaming.zh.md
index 05accb437c..0feb80a1a1 100644
--- a/docs/subsystems/llm-streaming.zh.md
+++ b/docs/subsystems/llm-streaming.zh.md
@@ -648,8 +648,21 @@ type RequestMessage = Message | RequestUserInput
 ```
 
 ```ts type-equiv
-/** A single model request, fully assembled. */
-interface GenerateOptions {
+/** Auxiliary request purposes declared by their producer packages. */
+interface LlmRequestPurposeMap {}
+```
+
+```ts type-equiv
+/** Declared auxiliary request purpose; ordinary conversation requests leave it absent. */
+type LlmRequestPurpose = Extract<keyof LlmRequestPurposeMap, string>
+```
+
+```ts type-equiv
+/**
+ * A single model request, fully assembled.
+ * @typeParam Purpose - declared purpose keys for callers; forwarding adapters may accept `string`.
+ */
+interface GenerateOptions<Purpose extends string = LlmRequestPurpose> {
   /** Registered provider route selecting the adapter instance. */
   provider: string
   model: string
@@ -690,7 +703,7 @@ interface GenerateOptions {
    * map the purpose to model-hidden transport metadata. Ordinary conversation
    * requests leave it unset.
    */
-  purpose?: 'compaction' | 'session-title'
+  purpose?: Purpose
 }
 ```
 
diff --git a/docs/subsystems/session.i18n.yaml b/docs/subsystems/session.i18n.yaml
index 53d89173b4..b4cd4bba34 100644
--- a/docs/subsystems/session.i18n.yaml
+++ b/docs/subsystems/session.i18n.yaml
@@ -68,3 +68,6 @@
 /sessions/remote-catalog-and-workspace-opening:
   en: dd27307e0d7c893c
   zh: b77d2a749b7b641c
+/sessions/session-log-upload-exclusions:
+  en: cfe3323aade972be
+  zh: 8423b490c47c5013
diff --git a/docs/subsystems/session.md b/docs/subsystems/session.md
index 7cbc91298d..fb3e56ee87 100644
--- a/docs/subsystems/session.md
+++ b/docs/subsystems/session.md
@@ -817,6 +817,29 @@ The backends that consume this contract are on [persistence.md](persistence.md).
 
 The optional `application` selects a registered file handler without changing the system default; `workspacePathApplications({ path })` returns current handlers, names, icons, and default selection after Host path verification.
 
+## Session-log upload exclusions
+
+`ctx.sessionLogDeepSeek.registerExclusion()` registers a caller-owned predicate over `SessionLogUploadRequest`. Any match omits the log contribution and its acceptance callback before reading Session events. No match preserves normal upload eligibility. The [package README](../../packages/session/session-log-deepseek/README.md#upload-exclusions) defines failure and disposal behavior.
+
+```ts type-equiv
+/** Request identity inspected before preparing a Session-log contribution. */
+interface SessionLogUploadRequest {
+  /** Live Session whose canonical log would be contributed. */
+  readonly sessionId: SessionId
+  /** Auxiliary request classification; absent for ordinary conversation requests. */
+  readonly purpose?: string
+}
+```
+
+```ts type-equiv
+/**
+ * Synchronous, side-effect-free upload exclusion owned by its registering plugin.
+ * @param request - request identity; the predicate must not mutate it.
+ * @returns `true` to omit the log field and acceptance callback, or `false` to keep checking eligibility.
+ */
+type SessionLogUploadExclusion = (request: SessionLogUploadRequest) => boolean
+```
+
 <!-- BEGIN GENERATED cordis-surface (gen-cordis-catalog.ts) — do not edit between markers -->
 
 <a id="cordis-surface"></a>
@@ -1035,6 +1058,26 @@ Types: [SessionId](core.md) · [SessionSearchRequest](session-query.md)
 
 Source: [`packages/api/session-controller/src/index.ts`](../../packages/api/session-controller/src/index.ts)
 
+<a id="ctxsessionlogdeepseek--sessionlogdeepseekservice"></a>
+
+### `ctx.sessionLogDeepSeek` — `SessionLogDeepSeekService`
+
+Incremental Session-log contributor with caller-owned upload exclusions.
+
+```ts cordis-catalog
+/**
+ * Exclude matching requests before reading or preparing their log contribution.
+ * Any matching rule suppresses both the field and its acceptance callback. With
+ * no matching rules, normal upload eligibility applies. A throwing rule fails
+ * this contribution; the request-extension registry omits it and reports the error.
+ * @param exclude - synchronous, side-effect-free predicate; `true` skips this upload.
+ * @returns effect disposer that removes this registration when called or when the caller unloads.
+ */
+registerExclusion(exclude: SessionLogUploadExclusion): () => Promise<void>
+```
+
+Source: [`packages/session/session-log-deepseek/src/index.ts`](../../packages/session/session-log-deepseek/src/index.ts)
+
 <a id="ctxsessions--sessionstore"></a>
 
 ### `ctx.sessions` — `SessionStore`
diff --git a/docs/subsystems/session.zh.md b/docs/subsystems/session.zh.md
index 1f40042967..fb26a5105c 100644
--- a/docs/subsystems/session.zh.md
+++ b/docs/subsystems/session.zh.md
@@ -821,6 +821,29 @@ interface PluginRecord {
 
 可选的 `application` 指定文件关联应用，不修改系统默认值；`workspacePathApplications({ path })` 在校验 Host 路径后返回当前关联应用、名称、图标和默认项。
 
+## Session 日志上传排除条件
+
+`ctx.sessionLogDeepSeek.registerExclusion()` 注册归调用方所有的判断函数，输入为 `SessionLogUploadRequest`。任意条件匹配时，在读取 Session 事件前省略日志贡献与接受回调。没有条件匹配时保留普通上传资格判断。[包 README](../../packages/session/session-log-deepseek/README.zh.md#upload-exclusions) 定义失败与释放行为。
+
+```ts type-equiv
+/** Request identity inspected before preparing a Session-log contribution. */
+interface SessionLogUploadRequest {
+  /** Live Session whose canonical log would be contributed. */
+  readonly sessionId: SessionId
+  /** Auxiliary request classification; absent for ordinary conversation requests. */
+  readonly purpose?: string
+}
+```
+
+```ts type-equiv
+/**
+ * Synchronous, side-effect-free upload exclusion owned by its registering plugin.
+ * @param request - request identity; the predicate must not mutate it.
+ * @returns `true` to omit the log field and acceptance callback, or `false` to keep checking eligibility.
+ */
+type SessionLogUploadExclusion = (request: SessionLogUploadRequest) => boolean
+```
+
 <!-- BEGIN GENERATED cordis-surface (gen-cordis-catalog.ts) — do not edit between markers -->
 
 <a id="cordis-surface"></a>
@@ -1039,6 +1062,26 @@ Types: [SessionId](core.zh.md) · [SessionSearchRequest](session-query.zh.md)
 
 Source: [`packages/api/session-controller/src/index.ts`](../../packages/api/session-controller/src/index.ts)
 
+<a id="ctxsessionlogdeepseek--sessionlogdeepseekservice"></a>
+
+### `ctx.sessionLogDeepSeek` — `SessionLogDeepSeekService`
+
+Incremental Session-log contributor with caller-owned upload exclusions.
+
+```ts cordis-catalog
+/**
+ * Exclude matching requests before reading or preparing their log contribution.
+ * Any matching rule suppresses both the field and its acceptance callback. With
+ * no matching rules, normal upload eligibility applies. A throwing rule fails
+ * this contribution; the request-extension registry omits it and reports the error.
+ * @param exclude - synchronous, side-effect-free predicate; `true` skips this upload.
+ * @returns effect disposer that removes this registration when called or when the caller unloads.
+ */
+registerExclusion(exclude: SessionLogUploadExclusion): () => Promise<void>
+```
+
+Source: [`packages/session/session-log-deepseek/src/index.ts`](../../packages/session/session-log-deepseek/src/index.ts)
+
 <a id="ctxsessions--sessionstore"></a>
 
 ### `ctx.sessions` — `SessionStore`
diff --git a/docs/subsystems/slots.i18n.yaml b/docs/subsystems/slots.i18n.yaml
index 17ae54903e..0a2bb60f40 100644
--- a/docs/subsystems/slots.i18n.yaml
+++ b/docs/subsystems/slots.i18n.yaml
@@ -9,8 +9,8 @@
   en: f2d2c0d3b8f14ec7
   zh: 441ed13ff3f81d2a
 /web-client-slots/cardinality-and-scope:
-  en: 5b0ada069239576b
-  zh: 84e1e6b253d1461e
+  en: cd17e3e0ff6e62ff
+  zh: 6e0db2cb16c41b73
 /web-client-slots/component-inputs:
   en: 9cb70abb2e39b958
   zh: cd4b6f1705d90e17
diff --git a/docs/subsystems/slots.md b/docs/subsystems/slots.md
index ee31122d13..fe8589f685 100644
--- a/docs/subsystems/slots.md
+++ b/docs/subsystems/slots.md
@@ -65,6 +65,8 @@ The slot declaration fixes two independent axes.
 
 `priority` is a shadowing rank for `single`, `list`, and `keyed` cells and an election order for `chain`. Lower values run or render first. Ordinary additive contributions should choose a fresh list `id` or keyed `key`; intentionally reusing a shipped cell replaces its presentation.
 
+The [context-menu plugin](../../packages/client/ui-context-menu/README.md) contributes `useContextMenu` through `provideRoot`; every scope receives the same plugin-owned trigger factory. Its prop and retained handlers retire when the provider unloads. Its root-scoped keyed `contextMenu.icon` Slot renders business-owned icons from action metadata.
+
 ## Component inputs
 
 A registered component receives inputs assembled at its binding site. Components derive these types rather than copying their members.
@@ -140,7 +142,10 @@ Factory: conversation.content [ConversationContent]
 │     │  ├─ conversation.chat.text-interaction [list]
 │     │  └─ conversation.chat.flow [ChatFlow]
 │     │     └─ conversation.chat.node [ChatNodeSeat dispatch]
-│     │        ├─ key=user,steering [UserMessageNodeView]
+│     │        ├─ key=user [UserMessageNodeView]
+│     │        │  ├─ conversation.chat.user.before [chain]
+│     │        │  └─ calls Factory: conversation.chat.user.content
+│     │        ├─ key=steering [UserMessageNodeView]
 │     │        │  └─ calls Factory: conversation.chat.user.content
 │     │        ├─ key=assistant-step [AssistantNodeView / AssistantMarkdown]
 │     │        │  ├─ conversation.chat.message.images [MessageImages]
diff --git a/docs/subsystems/slots.zh.md b/docs/subsystems/slots.zh.md
index ca13d60008..288b4b85f1 100644
--- a/docs/subsystems/slots.zh.md
+++ b/docs/subsystems/slots.zh.md
@@ -67,6 +67,8 @@ Slot 声明固定两个相互独立的维度。
 
 <a id="component-inputs"></a>
 
+[右键菜单插件](../../packages/client/ui-context-menu/README.zh.md) 通过 `provideRoot` 贡献 `useContextMenu`；每个作用域接收同一个由插件拥有的触发器工厂。提供方卸载时，注入属性与保留的处理器一并失效。其根作用域 keyed Slot `contextMenu.icon` 根据操作元数据渲染业务方提供的图标。
+
 ## 组件输入
 
 注册组件会在 binding 位置收到组装后的输入。组件应从这些类型推导 props，不要重新抄写成员。
@@ -142,7 +144,10 @@ Factory: conversation.content [ConversationContent]
 │     │  ├─ conversation.chat.text-interaction [list]
 │     │  └─ conversation.chat.flow [ChatFlow]
 │     │     └─ conversation.chat.node [ChatNodeSeat dispatch]
-│     │        ├─ key=user,steering [UserMessageNodeView]
+│     │        ├─ key=user [UserMessageNodeView]
+│     │        │  ├─ conversation.chat.user.before [chain]
+│     │        │  └─ calls Factory: conversation.chat.user.content
+│     │        ├─ key=steering [UserMessageNodeView]
 │     │        │  └─ calls Factory: conversation.chat.user.content
 │     │        ├─ key=assistant-step [AssistantNodeView / AssistantMarkdown]
 │     │        │  ├─ conversation.chat.message.images [MessageImages]
diff --git a/docs/upgrade-guide/v0.2.1-rc.2/context-menu-services/guide.i18n.yaml b/docs/upgrade-guide/v0.2.1-rc.2/context-menu-services/guide.i18n.yaml
new file mode 100644
index 0000000000..8249edf3c4
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.1-rc.2/context-menu-services/guide.i18n.yaml
@@ -0,0 +1,16 @@
+# Bilingual-pair consistency record for guide.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write docs/upgrade-guide/v0.2.1-rc.2/context-menu-services/guide.md
+/:
+  en: b0a44570cee3ac45
+  zh: f68438befed14c6e
+/context-menu-services-in-custom-client-compositions:
+  en: b2018bf0250be579
+  zh: 1d8a243d09f4128f
+/context-menu-services-in-custom-client-compositions/change:
+  en: 3eaef415166d076f
+  zh: 4040390d2572fc47
+/context-menu-services-in-custom-client-compositions/migration:
+  en: ebffe957534ac31b
+  zh: a33d2782f5ad0f5d
diff --git a/docs/upgrade-guide/v0.2.1-rc.2/context-menu-services/guide.md b/docs/upgrade-guide/v0.2.1-rc.2/context-menu-services/guide.md
new file mode 100644
index 0000000000..082e1da33f
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.1-rc.2/context-menu-services/guide.md
@@ -0,0 +1,23 @@
+---
+kind: upgrade-guide
+description: "Custom Client compositions must provide the context-menu and file-action services required by GUI plugins."
+---
+
+# Context menu services in custom Client compositions
+
+English | [中文](guide.zh.md)
+
+## Change
+
+GUI plugins now inject `contextMenus` to open shared object menus. The open-in-app plugin also injects `fileActions`, `sidebarRight`, `sidebarRightTabs`, and `remote.workspaceFiles`. Custom compositions that mount these GUI plugins without the new services cannot activate them. The shipped Web application bundle includes the providers; existing Session and tab menu Slot names remain available.
+
+## Migration
+
+1. In the package manifest that owns a custom composition, add dependencies on `@deepseek-ai/dsh-client-ui-context-menu` and `@deepseek-ai/dsh-client-ui-file-actions` at the same Harness version.
+2. Add both package names as plugin rows in the custom Client composition alongside the existing locale, slots, shortcuts, sidebar, and workspace-file providers. The default `@deepseek-ai/dsh-web-app` bundle already contains these rows.
+3. Rename `ctx.menus` to `ctx.contextMenus` and `MenuTargetMap` to `ContextMenuTargetMap`; neither old name has an alias. Mount the menu plugin so its `ctx.slots.provideRoot` contribution supplies `useContextMenu` to every Slot. Components call the hook once and spread `getTriggerProps(target, handlers?)` onto each element, including elements created in loops. See the [menu reference](../../../../packages/client/ui-context-menu/README.md) for handler composition and external action registration.
+4. Rebuild and launch the custom profile. Confirm that GUI plugins activate, right-clicking a background Session preserves selection, and existing Session/tab Slot contributions still appear.
+5. Custom Slot hosts must remove their declarations of `sidebar.workspaces.session.menu.item` and `sidebar.right.tab.menu.item`; the workspace and right-sidebar adapters now own these under `contextMenu.content`. Session rows retain the `[open, setOpen]` hook context, and tab rows receive `{ tab, dismiss }` within the clicked Session’s provider. A custom host replacing these adapters must declare the same children and supply those owners itself. Dockkit embedders using `getTabTriggerProps` own the popup and dismissal; `renderTabMenuItems` is used only by the kit popup. Supply reactive `tabMenuOpen` to suppress close-button tooltips while a custom menu prepares or remains open.
+
+6. Built-in Session menu items are data contributions. The legacy React Slot retains external entries together before Archive; Slot priority no longer shadows built-in actions. Use `ctx.contextMenus.register` for new actions and optional `commandId` to display an existing command’s current binding. Keep captured-target execution in `run`; no command dispatch is added.
+7. Menu contributions use `icon?: ReactNode`; replace `symbol` with a glyph element and wrap icon URLs in `<img>`. Obtain `useContextMenu` at each actual Slot entry. Plain children receive `getTriggerProps` or bound `contextMenuProps`; ToolRow uses `fileContextMenuProps` and `urlContextMenuProps`. Remove menu fields from Chat flow/node owners. The assistant entry supplies an ordinary file adapter to `forClosing()`, while Markdown adapts its target type at `MarkdownDelegateProvider.getTriggerProps`. Keep Session identity and gesture-time path resolution in the business registration. Remove imports of `contextMenuTrigger` and `menuPoint`; their independent utility package is removed. Do not add gesture exports to ui-primitives.
diff --git a/docs/upgrade-guide/v0.2.1-rc.2/context-menu-services/guide.zh.md b/docs/upgrade-guide/v0.2.1-rc.2/context-menu-services/guide.zh.md
new file mode 100644
index 0000000000..9281f9bee1
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.1-rc.2/context-menu-services/guide.zh.md
@@ -0,0 +1,23 @@
+---
+kind: upgrade-guide
+description: "自定义 Client 组合必须提供 GUI 插件所需的右键菜单与文件动作服务。"
+---
+
+# 自定义 Client 组合中的右键菜单服务
+
+[English](guide.md) | 中文
+
+## 变更
+
+GUI 插件现在注入 `contextMenus` 以打开共享对象菜单。open-in-app 插件还注入 `fileActions`、`sidebarRight`、`sidebarRightTabs` 和 `remote.workspaceFiles`。自定义组合若挂载这些 GUI 插件却没有新服务，将无法激活它们。随附 Web 应用 bundle（插件包）已包含提供方；现有 Session 和标签页菜单 Slot 名称仍可使用。
+
+## 迁移
+
+1. 在自定义组合所属的包清单中，添加与 Harness 版本一致的 `@deepseek-ai/dsh-client-ui-context-menu` 和 `@deepseek-ai/dsh-client-ui-file-actions` 依赖。
+2. 在自定义 Client 组合中将两个包名添加为插件行，与已有 locale、slots、shortcuts、侧栏和工作区文件提供方并列。默认 `@deepseek-ai/dsh-web-app` bundle 已包含这些行。
+3. 将 `ctx.menus` 改为 `ctx.contextMenus`，将 `MenuTargetMap` 改为 `ContextMenuTargetMap`，旧名均无兼容别名。挂载菜单插件，由其 `ctx.slots.provideRoot` 贡献向每个 Slot 提供 `useContextMenu`。组件调用一次 hook，将 `getTriggerProps(target, handlers?)` 展开到每个元素，包括循环生成的元素。处理器组合和外部动作注册见[菜单参考](../../../../packages/client/ui-context-menu/README.zh.md)。
+4. 重新构建并启动自定义 profile（配置档）。确认 GUI 插件正常激活、右键后台 Session 不改变选择，且现有 Session/标签页 Slot 贡献仍然显示。
+5. 自定义 Slot 宿主应移除对 `sidebar.workspaces.session.menu.item` 和 `sidebar.right.tab.menu.item` 的声明；现在由工作区和右侧栏适配器在 `contextMenu.content` 下拥有它们。会话行继续接收 `[open, setOpen]` hook context，标签行在所点击会话的 provider 内接收 `{ tab, dismiss }`。替换这些适配器的自定义宿主须自行声明相同的子 Slot 并提供这些 owner。使用 `getTabTriggerProps` 的 Dockkit 嵌入方负责弹窗和关闭，`renderTabMenuItems` 仅供组件自身的弹窗使用。通过响应式 `tabMenuOpen` 在自定义菜单准备或显示时禁用关闭按钮的 Tooltip。
+
+6. 内置 Session 菜单项改为数据贡献。旧 React Slot 将外部条目集中显示在归档之前，Slot priority 不再覆盖内置动作。新增动作用 `ctx.contextMenus.register`，可通过 `commandId` 展示已有命令的当前绑定。针对捕获目标的执行仍放在 `run`，不增加命令调度。
+7. 菜单贡献使用 `icon?: ReactNode`：将 `symbol` 改为图标元素，并用 `<img>` 包装图标 URL。在每个实际 Slot 入口获取 `useContextMenu`。普通子组件接收 `getTriggerProps` 或绑定后的 `contextMenuProps`；ToolRow 使用 `fileContextMenuProps` 和 `urlContextMenuProps`。删除 Chat 消息流和节点 owner 的菜单字段。助手入口向 `forClosing()` 传入普通文件适配函数，Markdown 则在 `MarkdownDelegateProvider.getTriggerProps` 处适配目标类型。业务注册保留 Session 归属和触发时路径解析。删除 `contextMenuTrigger` 和 `menuPoint` 导入，其独立工具包已删除。不要向 ui-primitives 增加手势导出。
diff --git a/docs/upgrade-guide/v0.2.1-rc.3/computer-use-helper-permissions/guide.i18n.yaml b/docs/upgrade-guide/v0.2.1-rc.3/computer-use-helper-permissions/guide.i18n.yaml
new file mode 100644
index 0000000000..f8584a6842
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.1-rc.3/computer-use-helper-permissions/guide.i18n.yaml
@@ -0,0 +1,16 @@
+# Bilingual-pair consistency record for guide.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write docs/upgrade-guide/v0.2.1-rc.3/computer-use-helper-permissions/guide.md
+/:
+  en: 23336f139ca68e47
+  zh: 20ef9419a53642d5
+/authorize-the-computer-use-helper:
+  en: f8335f2dca7a15cf
+  zh: 469a0a753fea2a93
+/authorize-the-computer-use-helper/change:
+  en: 1552866718133b10
+  zh: 1c760c5c2d5cfc0b
+/authorize-the-computer-use-helper/migration:
+  en: a79e5995415ff456
+  zh: 6f818a092e53af2c
diff --git a/docs/upgrade-guide/v0.2.1-rc.3/computer-use-helper-permissions/guide.md b/docs/upgrade-guide/v0.2.1-rc.3/computer-use-helper-permissions/guide.md
new file mode 100644
index 0000000000..c913488785
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.1-rc.3/computer-use-helper-permissions/guide.md
@@ -0,0 +1,21 @@
+---
+kind: upgrade-guide
+description: "Computer Use needs permission for its own helper application instead of the terminal that launches DSH."
+---
+
+# Authorize the Computer Use helper
+
+English | [中文](guide.zh.md)
+
+## Change
+
+macOS Computer Use runs as `DSH Computer Use.app`, launched through LaunchServices. Accessibility and Screen Recording grants for a terminal or Desktop launcher do not grant access to this helper. Source preparation builds and signs the application; installed packages require the prepared application and its `current.json` receipt. A custom `helperPath` pointing at a bare native binary is no longer a supported native launch path.
+
+## Migration
+
+1. Computer Use now installs on demand. In **Plugins → Add plugin**, install `@deepseek-ai/dsh-cua-bundle` and enable it; profiles that previously selected the shipped copy need this installation. Restart DSH if requested. In the Computer Use plugin page, grant Accessibility and Screen Recording access to `DSH Computer Use.app` when macOS requests it.
+2. Remove an obsolete `helperPath` override or `DSH_CUA_HELPER` value to use automatic preparation. For a custom build, point it to the executable at `DSH Computer Use.app/Contents/MacOS/dsh-cua-native` inside the complete application bundle.
+3. Confirm that the permission page identifies `DSH Computer Use.app` and both permissions are allowed before resuming native application tasks. Target-application consent remains required.
+4. If a terminal or Desktop launcher was granted these permissions only for Computer Use, revoke those obsolete grants in System Settings. Authorizing the helper does not revoke other applications’ existing permissions; programs the model runs still follow their launcher’s system permissions and the DSH sandbox policy.
+
+Source builds use ad-hoc signing and may need authorization again after code changes. Release packagers must preserve a stable Developer ID signing identity and notarize their distribution. See the [native build instructions](../../../../packages/experimental/cua-macos/native/README.md#build-and-service).
diff --git a/docs/upgrade-guide/v0.2.1-rc.3/computer-use-helper-permissions/guide.zh.md b/docs/upgrade-guide/v0.2.1-rc.3/computer-use-helper-permissions/guide.zh.md
new file mode 100644
index 0000000000..f25a4b805d
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.1-rc.3/computer-use-helper-permissions/guide.zh.md
@@ -0,0 +1,21 @@
+---
+kind: upgrade-guide
+description: "Computer Use 需要给自己的 helper 应用授权，启动 DSH 的终端授权不再适用。"
+---
+
+# 给 Computer Use helper 授权
+
+[English](guide.md) | 中文
+
+## 变更
+
+macOS Computer Use 通过 LaunchServices 以 `DSH Computer Use.app` 运行。终端或 Desktop 启动器的辅助功能和屏幕录制授权不赋予 helper 权限。源码准备会构建并签名应用；安装版需要预构建的应用及 `current.json` 记录。自定义 `helperPath` 指向裸原生二进制的启动方式不再受支持。
+
+## 迁移
+
+1. Computer Use 改为按需安装。在“插件 → 添加插件”中安装 `@deepseek-ai/dsh-cua-bundle` 并启用；此前选中过内置副本的 profile 也需完成这次安装。按提示重启 DSH。在 Computer Use 插件页按 macOS 提示，给 `DSH Computer Use.app` 授予辅助功能和屏幕录制权限。
+2. 删除过时的 `helperPath` 覆盖配置或 `DSH_CUA_HELPER` 值，使用自动准备。使用自定义构建时，将其指向完整应用包内的 `DSH Computer Use.app/Contents/MacOS/dsh-cua-native` 可执行文件。
+3. 恢复原生应用任务前，确认权限页显示 `DSH Computer Use.app`，且两项权限均已允许。具体目标应用仍需另行许可。
+4. 若终端或 Desktop 启动器的这两项权限只用于 Computer Use，可在系统设置中撤销这些旧授权。给 helper 授权不会撤销其他应用已有的权限；模型运行的程序仍遵循启动器的系统权限和 DSH 沙箱策略。
+
+源码构建使用临时签名，代码变化后可能需要重新授权。正式发布需要保持稳定的 Developer ID 签名身份，并完成分发公证。参见[原生构建说明](../../../../packages/experimental/cua-macos/native/README.zh.md#build-and-service)。
diff --git a/docs/upgrade-guide/v0.2.1-rc.3/web-file-downloads/guide.i18n.yaml b/docs/upgrade-guide/v0.2.1-rc.3/web-file-downloads/guide.i18n.yaml
new file mode 100644
index 0000000000..881f6d61d6
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.1-rc.3/web-file-downloads/guide.i18n.yaml
@@ -0,0 +1,16 @@
+# Bilingual-pair consistency record for guide.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write docs/upgrade-guide/v0.2.1-rc.3/web-file-downloads/guide.md
+/:
+  en: 25674d6a93c97ca5
+  zh: ac1563eccab1b284
+/file-downloads-on-web:
+  en: d8fac1a37dede04d
+  zh: 8f132360f0553b64
+/file-downloads-on-web/change:
+  en: d76c6132a5e5fc9d
+  zh: 691b2264a37a526f
+/file-downloads-on-web/migration:
+  en: a4365e73ae4e2de4
+  zh: 8988bc1703fc5b8d
diff --git a/docs/upgrade-guide/v0.2.1-rc.3/web-file-downloads/guide.md b/docs/upgrade-guide/v0.2.1-rc.3/web-file-downloads/guide.md
new file mode 100644
index 0000000000..dcc26609ac
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.1-rc.3/web-file-downloads/guide.md
@@ -0,0 +1,19 @@
+---
+kind: upgrade-guide
+description: "Custom file-action menus must offer save-as only on Desktop and browser downloads on Web."
+---
+
+# File downloads on Web
+
+English | [中文](guide.zh.md)
+
+## Change
+
+The Web file-action service no longer offers save-as through a browser file picker. `canSaveAs` is always false on Web, and `save(source, 'saveAs')` rejects before reading the source. Built-in Web file and image menus offer Download and omit Save as. Desktop still offers both actions; successful saves return the absolute destination `path` instead of an opaque file ID.
+
+## Migration
+
+1. Custom Client menus should include Save as only when `ctx.fileActions.canSaveAs` is true.
+2. On Web, call `ctx.fileActions.save(source, 'download')`. The browser handles the original content and suggested filename; a `requested` result means download started, not completed. Do not report a saved local path.
+3. Replace `savedFile(url)` and `reveal(id)` calls with an action on the completed `saved` result, using its `path` with `session.openWorkspacePath`. Keep original-file context-menu reveal independent of saved destinations.
+4. Verify that Web file and image menus expose Download without Save as, including browsers that support `showSaveFilePicker`. Verify that Desktop image menus retain both actions. See the [file-action reference](../../../../packages/client/ui-file-actions/README.md) for save results and feedback ownership.
diff --git a/docs/upgrade-guide/v0.2.1-rc.3/web-file-downloads/guide.zh.md b/docs/upgrade-guide/v0.2.1-rc.3/web-file-downloads/guide.zh.md
new file mode 100644
index 0000000000..d9e232845a
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.1-rc.3/web-file-downloads/guide.zh.md
@@ -0,0 +1,19 @@
+---
+kind: upgrade-guide
+description: "自定义文件动作菜单应仅在 Desktop 提供另存为，在 Web 使用浏览器下载。"
+---
+
+# Web 文件下载
+
+[English](guide.md) | 中文
+
+## 变更
+
+Web 文件动作服务不再通过浏览器文件选择器提供另存为。Web 的 `canSaveAs` 始终为 false，`save(source, 'saveAs')` 会在读取来源前拒绝。内置 Web 文件和图片菜单提供「下载」，不显示「另存为」。Desktop 仍提供两种操作；保存成功后返回目标绝对路径 `path`，不再返回不透明文件 ID。
+
+## 迁移
+
+1. 自定义 Client 菜单仅在 `ctx.fileActions.canSaveAs` 为 true 时添加「另存为」。
+2. Web 端调用 `ctx.fileActions.save(source, 'download')`。浏览器处理原始内容和建议文件名；`requested` 结果仅表示下载已开始，不代表完成。不要报告本机保存路径。
+3. 将 `savedFile(url)` 和 `reveal(id)` 调用替换为完成后 `saved` 结果上的操作，使用其中的 `path` 调用 `session.openWorkspacePath`。原文件右键定位应独立于保存目标。
+4. 验证 Web 文件和图片菜单只有「下载」而没有「另存为」，包括支持 `showSaveFilePicker` 的浏览器；验证 Desktop 图片菜单保留两种操作。保存结果与提示的归属参见[文件动作参考](../../../../packages/client/ui-file-actions/README.zh.md)。
diff --git a/docs/upgrade-guide/v0.2.2-alpha.2/context-menu-target/guide.i18n.yaml b/docs/upgrade-guide/v0.2.2-alpha.2/context-menu-target/guide.i18n.yaml
new file mode 100644
index 0000000000..74990defdf
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.2-alpha.2/context-menu-target/guide.i18n.yaml
@@ -0,0 +1,16 @@
+# Bilingual-pair consistency record for guide.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write docs/upgrade-guide/v0.2.2-alpha.2/context-menu-target/guide.md
+/:
+  en: 6c606440532dfae0
+  zh: 9308d72d451e12c7
+/context-menu-types-and-icons:
+  en: d1237d3842936881
+  zh: b32fcacf82bed5f1
+/context-menu-types-and-icons/change:
+  en: 35faa7bd1cff539f
+  zh: 0dc2515e0025e3d8
+/context-menu-types-and-icons/migration:
+  en: e15e76d8d6a95f35
+  zh: 4bf2dec8d764e5ae
diff --git a/docs/upgrade-guide/v0.2.2-alpha.2/context-menu-target/guide.md b/docs/upgrade-guide/v0.2.2-alpha.2/context-menu-target/guide.md
new file mode 100644
index 0000000000..0f33207f01
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.2-alpha.2/context-menu-target/guide.md
@@ -0,0 +1,19 @@
+---
+kind: upgrade-guide
+description: "Client plugins must use the prefixed context menu types and hooks and register keyed icon components."
+---
+
+# Context menu types and icons
+
+English | [中文](guide.zh.md)
+
+## Change
+
+The `@deepseek-ai/dsh-client-ui-context-menu/client` export `MenuTarget` is renamed to `ContextMenuTarget`, matching `ContextMenuTargetMap`. The old name has no compatibility alias. Target fields and runtime behavior are unchanged. Workspace and sidebar injections rename `menuTarget` / `useMenuTarget` to `contextMenuTarget` / `useContextMenuTarget`. Action icons accept `{ key, src? }` instead of React nodes and render through the keyed `contextMenu.icon` Slot.
+
+## Migration
+
+1. Replace `MenuTarget` imports and type references with `ContextMenuTarget`.
+2. Rename injected `menuTarget` sources and `useMenuTarget` consumers to `contextMenuTarget` and `useContextMenuTarget`.
+3. Replace action icon elements with `{ key: 'my-plugin.action' }`; carry a captured image URL in `src` when needed. Register the icon component under that key through `ctx.slots.inject('contextMenu.icon', ...)` and `ctx.slots.register()`. See the [menu package](../../../../packages/client/ui-context-menu/README.md#use-this-package).
+4. Rebuild custom Client plugins, confirm that type checks pass, and open their menus to verify icon rendering and plugin-unload cleanup.
diff --git a/docs/upgrade-guide/v0.2.2-alpha.2/context-menu-target/guide.zh.md b/docs/upgrade-guide/v0.2.2-alpha.2/context-menu-target/guide.zh.md
new file mode 100644
index 0000000000..e6bcb0cd2c
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.2-alpha.2/context-menu-target/guide.zh.md
@@ -0,0 +1,19 @@
+---
+kind: upgrade-guide
+description: "Client 插件须使用带前缀的右键菜单类型和 hook，并注册 keyed 图标组件。"
+---
+
+# 右键菜单类型和图标
+
+[English](guide.md) | 中文
+
+## 变更
+
+`@deepseek-ai/dsh-client-ui-context-menu/client` 导出的 `MenuTarget` 更名为 `ContextMenuTarget`，与 `ContextMenuTargetMap` 保持一致。旧名不保留兼容别名，目标字段和运行时行为不变。工作区与侧栏注入的 `menuTarget` / `useMenuTarget` 改为 `contextMenuTarget` / `useContextMenuTarget`。操作图标改用 `{ key, src? }`，通过 keyed Slot `contextMenu.icon` 渲染，不再接收 React 节点。
+
+## 迁移
+
+1. 将 `MenuTarget` 导入及类型引用替换为 `ContextMenuTarget`。
+2. 将注入源 `menuTarget` 和消费者 `useMenuTarget` 分别改为 `contextMenuTarget`、`useContextMenuTarget`。
+3. 将操作图标元素替换为 `{ key: 'my-plugin.action' }`，需要时通过 `src` 携带已捕获的图片 URL。通过 `ctx.slots.inject('contextMenu.icon', ...)` 和 `ctx.slots.register()` 在该 key 下注册图标组件，参见[菜单包](../../../../packages/client/ui-context-menu/README.zh.md#use-this-package)。
+4. 重新构建自定义 Client 插件，确认类型检查通过，并打开菜单验证图标渲染和插件卸载后的清理。
diff --git a/docs/upgrade-guide/v0.2.2-alpha.2/forge-git-permissions/guide.i18n.yaml b/docs/upgrade-guide/v0.2.2-alpha.2/forge-git-permissions/guide.i18n.yaml
new file mode 100644
index 0000000000..dc8f886672
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.2-alpha.2/forge-git-permissions/guide.i18n.yaml
@@ -0,0 +1,16 @@
+# Bilingual-pair consistency record for guide.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write docs/upgrade-guide/v0.2.2-alpha.2/forge-git-permissions/guide.md
+/:
+  en: 670467a1e1ef4871
+  zh: a5c49c32981a3d50
+/forge-git-query-permissions-and-content-conversion:
+  en: 622fa28fae275249
+  zh: 75888856615bcfd3
+/forge-git-query-permissions-and-content-conversion/change:
+  en: d8f544395f65b663
+  zh: f785a6d6f9a696b6
+/forge-git-query-permissions-and-content-conversion/migration:
+  en: db9ae3d66f6bb1e7
+  zh: 315bfde302564a7c
diff --git a/docs/upgrade-guide/v0.2.2-alpha.2/forge-git-permissions/guide.md b/docs/upgrade-guide/v0.2.2-alpha.2/forge-git-permissions/guide.md
new file mode 100644
index 0000000000..76ac171810
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.2-alpha.2/forge-git-permissions/guide.md
@@ -0,0 +1,21 @@
+---
+kind: upgrade-guide
+description: "Forge Git queries use Session permissions and disable configured diff helpers."
+---
+# Forge Git query permissions and content conversion
+
+English | [中文](guide.zh.md)
+
+## Change
+
+Forge Git queries use the Session's sandbox mode instead of forcing `read-only`. `danger-full-access` works without a sandbox backend; `workspace-write` permits writes within its configured roots. A confined mode still refuses execution when its backend is unavailable.
+
+On Git 2.31 or newer, local diffs and statistics disable enumerated clean/process filters for each command. Git's built-in newline, ident, and encoding conversions still apply. Materialized LFS files and other filtered files can appear changed when ordinary Git considers them clean. The panel does not request LFS downloads. Older Git or concurrently added filters can still execute helpers under Session permissions. Submodule commit changes remain visible, but internal uncommitted changes are omitted.
+
+Filter configuration read failures, including truncated output, report `forgePanel/filter-config-failed` before any comparison and offer a retry. They are separate from `forgePanel/diff-too-large`.
+
+## Migration
+
+1. Keep a Session in `read-only` when its Git queries require operating-system-enforced write protection. Use the existing permission picker to select the intended Session mode; no configuration keys change.
+2. For repositories that require content conversion or submodule working-tree inspection, use an explicit Git command under the intended Session permissions to inspect those changes. The panel's local comparison bypasses clean/process filters on supported Git versions.
+3. On a host without a sandbox backend, select Full access and refresh the Forge panel. Its checkout and ordinary local changes should load; switching to a confined mode must still report the unavailable backend.
diff --git a/docs/upgrade-guide/v0.2.2-alpha.2/forge-git-permissions/guide.zh.md b/docs/upgrade-guide/v0.2.2-alpha.2/forge-git-permissions/guide.zh.md
new file mode 100644
index 0000000000..07c4770bf3
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.2-alpha.2/forge-git-permissions/guide.zh.md
@@ -0,0 +1,21 @@
+---
+kind: upgrade-guide
+description: "Forge Git 查询使用 Session 权限并禁用已配置的 diff 辅助程序。"
+---
+# Forge Git 查询权限与内容转换
+
+[English](guide.md) | 中文
+
+## 变更
+
+Forge Git 查询使用 Session 的沙箱模式，不再强制 `read-only`。`danger-full-access` 无需沙箱后端；`workspace-write` 允许在其配置的根目录内写入。受限模式的后端不可用时仍拒绝执行。
+
+在 Git 2.31 或更新版本中，本地 diff 与统计仅对每次命令禁用已枚举的 clean/process filter。Git 内置的换行、ident 与编码转换仍然生效。已物化的 LFS 文件及其他过滤文件可能显示为变更，即使普通 Git 认为它们未变。面板不请求下载 LFS 对象。旧 Git 或并发新增的过滤器仍可能按 Session 权限执行辅助程序。子模块提交变化仍可见，但内部未提交修改不显示。
+
+过滤器配置读取失败（包括输出被截断）时，在任何比较之前报告 `forgePanel/filter-config-failed` 并提供重试，与 `forgePanel/diff-too-large` 区分。
+
+## 迁移
+
+1. 如果 Git 查询需要操作系统强制禁止写入，请将 Session 保持为 `read-only`。通过现有权限选择器选择所需的 Session 模式；配置键没有变化。
+2. 对于需要内容转换或检查子模块工作区的仓库，请在所需的 Session 权限下显式运行 Git 命令检查这些变化。面板的本地比较在受支持的 Git 版本中绕过 clean/process filter。
+3. 在没有沙箱后端的主机上选择“完全权限”，然后刷新 Forge 面板。检出信息和普通本地变更应可加载；切回受限模式后仍须报告后端不可用。
diff --git a/docs/upgrade-guide/v0.2.2-alpha.2/llm-request-purpose-declarations/guide.i18n.yaml b/docs/upgrade-guide/v0.2.2-alpha.2/llm-request-purpose-declarations/guide.i18n.yaml
new file mode 100644
index 0000000000..7bae7f2845
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.2-alpha.2/llm-request-purpose-declarations/guide.i18n.yaml
@@ -0,0 +1,16 @@
+# Bilingual-pair consistency record for guide.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write docs/upgrade-guide/v0.2.2-alpha.2/llm-request-purpose-declarations/guide.md
+/:
+  en: 0a5cfa851101f3e9
+  zh: 1c8e0e437718d4e2
+/declare-auxiliary-llm-request-purposes:
+  en: 5d5e1b6cb5b9c95e
+  zh: 11cf31babb07da28
+/declare-auxiliary-llm-request-purposes/change:
+  en: 0682a43eb52792fd
+  zh: 954b186cc66fdb08
+/declare-auxiliary-llm-request-purposes/migration:
+  en: eae671d1e185ecbf
+  zh: c042a276a1a7ad17
diff --git a/docs/upgrade-guide/v0.2.2-alpha.2/llm-request-purpose-declarations/guide.md b/docs/upgrade-guide/v0.2.2-alpha.2/llm-request-purpose-declarations/guide.md
new file mode 100644
index 0000000000..d71d8f6bef
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.2-alpha.2/llm-request-purpose-declarations/guide.md
@@ -0,0 +1,29 @@
+---
+kind: upgrade-guide
+description: "Auxiliary LLM request purposes require producer-owned type declarations instead of a shared fixed union."
+---
+
+# Declare auxiliary LLM request purposes
+
+English | [中文](guide.zh.md)
+
+## Change
+
+`GenerateOptions.purpose` derives from the declaration-mergeable `LlmRequestPurposeMap` exported by `@deepseek-ai/dsh-llm/types`. The shared package no longer declares `compaction` or `session-title`. Plugins that construct auxiliary requests must load the producer's declarations or declare their own purpose. Existing runtime purpose strings keep their meaning.
+
+## Migration
+
+1. Import `@deepseek-ai/dsh-compaction-basic` for direct compaction requests, or `@deepseek-ai/dsh-session-title-llm` for title requests, using a type-only import when only the declaration is needed.
+2. For a plugin-owned purpose, augment `LlmRequestPurposeMap` from the plugin's public type entry. Map the purpose key to `true`:
+
+   ```ts
+   import type {} from '@deepseek-ai/dsh-llm/types'
+
+   declare module '@deepseek-ai/dsh-llm/types' {
+     interface LlmRequestPurposeMap {
+       'my-plugin-purpose': true
+     }
+   }
+   ```
+
+3. Compile the plugin against the new package declarations. Confirm that its request accepts the declared purpose and rejects an undeclared key.
diff --git a/docs/upgrade-guide/v0.2.2-alpha.2/llm-request-purpose-declarations/guide.zh.md b/docs/upgrade-guide/v0.2.2-alpha.2/llm-request-purpose-declarations/guide.zh.md
new file mode 100644
index 0000000000..d1fd550142
--- /dev/null
+++ b/docs/upgrade-guide/v0.2.2-alpha.2/llm-request-purpose-declarations/guide.zh.md
@@ -0,0 +1,29 @@
+---
+kind: upgrade-guide
+description: "辅助 LLM 请求用途改为生产方拥有的类型声明，不再使用共享固定联合。"
+---
+
+# 声明辅助 LLM 请求用途
+
+[English](guide.md) | 中文
+
+## 变更
+
+`GenerateOptions.purpose` 由 `@deepseek-ai/dsh-llm/types` 导出的可声明合并的 `LlmRequestPurposeMap` 派生。共享包不再声明 `compaction` 或 `session-title`。构造辅助请求的插件必须加载生产方的声明，或声明自己的用途。现有运行时用途字符串保持原有含义。
+
+## 迁移
+
+1. 直接构造压缩请求时导入 `@deepseek-ai/dsh-compaction-basic`，构造标题请求时导入 `@deepseek-ai/dsh-session-title-llm`；只需要声明时使用仅类型导入。
+2. 对插件拥有的用途，在插件公开类型入口中扩展 `LlmRequestPurposeMap`，将用途键映射到 `true`：
+
+   ```ts
+   import type {} from '@deepseek-ai/dsh-llm/types'
+
+   declare module '@deepseek-ai/dsh-llm/types' {
+     interface LlmRequestPurposeMap {
+       'my-plugin-purpose': true
+     }
+   }
+   ```
+
+3. 使用新包的声明编译插件，确认请求接受已声明用途，并拒绝未声明的键。
diff --git a/package.json b/package.json
index 229ba8880c..9dccd6008b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@deepseek-ai/dsh-root",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "license": "MIT",
   "private": true,
   "type": "module",
diff --git a/packages/acp/acp/package.json b/packages/acp/acp/package.json
index 24c5ded58e..877006761a 100644
--- a/packages/acp/acp/package.json
+++ b/packages/acp/acp/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-acp",
   "description": "Automation-only Agent Client Protocol server for driving DeepSeek Harness agents over JSON-RPC stdio",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/api/account-controller/package.json b/packages/api/account-controller/package.json
index 0e4504e6c1..1bd865aeeb 100644
--- a/packages/api/account-controller/package.json
+++ b/packages/api/account-controller/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-api-account-controller",
   "description": "Expose safe account operations over authenticated Remote",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/api/gateway/package.json b/packages/api/gateway/package.json
index cf412b4449..f67e41c300 100644
--- a/packages/api/gateway/package.json
+++ b/packages/api/gateway/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-api-gateway",
   "description": "Typert Remote Host dispatcher and Client API endpoint",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/api/gateway/src/client/remote-events.ts b/packages/api/gateway/src/client/remote-events.ts
index eabda54e37..8e5b1c22ca 100644
--- a/packages/api/gateway/src/client/remote-events.ts
+++ b/packages/api/gateway/src/client/remote-events.ts
@@ -333,7 +333,7 @@ function invalidRemoteEventFrame(): never {
 }
 
 function privateEvents(ctx: Context): PrivateEventContext {
-  return ctx
+  return ctx.events
 }
 
 function toError(reason: unknown, message: string): Error {
diff --git a/packages/api/gateway/tests/gateway.client.spec.ts b/packages/api/gateway/tests/gateway.client.spec.ts
index a7e0ca2560..3807baee59 100644
--- a/packages/api/gateway/tests/gateway.client.spec.ts
+++ b/packages/api/gateway/tests/gateway.client.spec.ts
@@ -866,7 +866,7 @@ describe('Client Typert API', () => {
     const ctx = await bench(call)
     const agentCtx = ctx.extend({ fixtureId: 'agent-2' }) as FixtureContext
     ctx.typert.contexts.registerClient('fixture', {
-      identity: candidate => (candidate as Context & { fixtureId?: string }).fixtureId,
+      identity: candidate => 'fixtureId' in candidate ? (candidate as Context & { fixtureId?: string }).fixtureId : undefined,
       resolve: id => id === 'agent-2' ? agentCtx : undefined,
     })
     const assembly = ctx.plugin(Object.assign(
@@ -897,7 +897,7 @@ describe('Client Typert API', () => {
     const ctx = await bench(call)
     const agentCtx = ctx.extend({ fixtureId: 'agent-2' }) as FixtureContext
     ctx.typert.contexts.registerClient('fixture', {
-      identity: candidate => (candidate as Context & { fixtureId?: string }).fixtureId,
+      identity: candidate => 'fixtureId' in candidate ? (candidate as Context & { fixtureId?: string }).fixtureId : undefined,
       resolve: id => id === 'agent-2' ? agentCtx : undefined,
     })
     const assembly = ctx.plugin(Object.assign(
@@ -943,7 +943,7 @@ describe('Client Typert API', () => {
     const ctx = await bench(call)
     const agentCtx = ctx.extend({ fixtureId: 'agent-remounted' }) as FixtureContext
     ctx.typert.contexts.registerClient('fixture', {
-      identity: candidate => (candidate as Context & { fixtureId?: string }).fixtureId,
+      identity: candidate => 'fixtureId' in candidate ? (candidate as Context & { fixtureId?: string }).fixtureId : undefined,
       resolve: id => id === 'agent-remounted' ? agentCtx : undefined,
     })
     const direct = directDescriptor()
diff --git a/packages/api/gateway/tests/gateway.host.spec.ts b/packages/api/gateway/tests/gateway.host.spec.ts
index 4272ee90bb..2931b3d159 100644
--- a/packages/api/gateway/tests/gateway.host.spec.ts
+++ b/packages/api/gateway/tests/gateway.host.spec.ts
@@ -75,14 +75,14 @@ class GoalService extends Service {
     return {
       agentId: agent.id,
       title: request.title,
-      scope: (this.ctx as MarkedContext).fixtureScope ?? 'root',
+      scope: 'fixtureScope' in this.ctx ? (this.ctx as MarkedContext).fixtureScope : 'root',
     }
   }
 
   @RemoteScope('gatewayFixture')
   rename(request: { readonly title: string }): unknown {
     this.calls.push('rename')
-    return { title: request.title, scope: (this.ctx as MarkedContext).fixtureScope ?? 'root' }
+    return { title: request.title, scope: 'fixtureScope' in this.ctx ? (this.ctx as MarkedContext).fixtureScope : 'root' }
   }
 
   @Remote
diff --git a/packages/api/job-controller/package.json b/packages/api/job-controller/package.json
index 0ac6a2c8b8..c550f1f912 100644
--- a/packages/api/job-controller/package.json
+++ b/packages/api/job-controller/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-api-job-controller",
   "description": "Job Remote observation stream and the reference-counted client job-output service",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/api/remote-access/package.json b/packages/api/remote-access/package.json
index e0b68f904e..5e81e757c2 100644
--- a/packages/api/remote-access/package.json
+++ b/packages/api/remote-access/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-api-remote-access",
   "description": "Method-level Remote access control for non-owner Peers and the per-Peer access snapshot",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/api/remotes/package.json b/packages/api/remotes/package.json
index cf1766abcd..8735bc4339 100644
--- a/packages/api/remotes/package.json
+++ b/packages/api/remotes/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-api-remotes",
   "description": "Remote BFF assembly for application-selected Host capabilities",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/api/remotes/tests/built-lib.e2e.ts b/packages/api/remotes/tests/built-lib.e2e.ts
index 2c22aff84f..07d0ef5618 100644
--- a/packages/api/remotes/tests/built-lib.e2e.ts
+++ b/packages/api/remotes/tests/built-lib.e2e.ts
@@ -184,7 +184,7 @@ describe.skipIf(!requiredArtifacts)('Goal Remote built LIB chain', () => {
           await client.plugin({ inject: plugin.inject, apply: plugin.apply })
         }
         client.typert.contexts.registerClient('agent', {
-          identity: candidate => candidate.builtAgentId,
+          identity: candidate => 'builtAgentId' in candidate ? candidate.builtAgentId : undefined,
         })
 
         const invalidResult = await client.remote.goals.create(rootAgent.id, { objective: 1 })
diff --git a/packages/api/session-controller/package.json b/packages/api/session-controller/package.json
index 7b4e5de954..4a7e14aa2b 100644
--- a/packages/api/session-controller/package.json
+++ b/packages/api/session-controller/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-api-session-controller",
   "description": "Session Remote commands, cold reads, and live control transport",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/api/settings-controller/package.json b/packages/api/settings-controller/package.json
index e65e555a32..e424a9e808 100644
--- a/packages/api/settings-controller/package.json
+++ b/packages/api/settings-controller/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-api-settings-controller",
   "description": "Remote owner for the configuration surfaces over the settings-domain seams",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/api/terminal-controller/package.json b/packages/api/terminal-controller/package.json
index a8c0c1c684..84a53b5df6 100644
--- a/packages/api/terminal-controller/package.json
+++ b/packages/api/terminal-controller/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-api-terminal-controller",
   "description": "Session-owned interactive terminals with shell discovery, screen recovery and typed Remote control",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/api/workspace-controller/package.json b/packages/api/workspace-controller/package.json
index c3daa0cd9f..8a7363da4f 100644
--- a/packages/api/workspace-controller/package.json
+++ b/packages/api/workspace-controller/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-api-workspace-controller",
   "description": "Workspace Remote commands and reconnect-safe state transport",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/api/workspace-files/package.json b/packages/api/workspace-files/package.json
index d180209fc8..5170995310 100644
--- a/packages/api/workspace-files/package.json
+++ b/packages/api/workspace-files/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-api-workspace-files",
   "description": "Workspace file service and Client resource provider: bounded reads, directory listing, and live metadata over the workspaceFiles Remote namespace",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/attachment/attachment-local/package.json b/packages/attachment/attachment-local/package.json
index 77123989f0..8e7071c71d 100644
--- a/packages/attachment/attachment-local/package.json
+++ b/packages/attachment/attachment-local/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-attachment-local",
   "description": "Private content-addressed DSH_HOME attachment storage",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/attachment/attachment/package.json b/packages/attachment/attachment/package.json
index 37edd925ea..650a98b1ae 100644
--- a/packages/attachment/attachment/package.json
+++ b/packages/attachment/attachment/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-attachment",
   "description": "Durable immutable attachment storage seam for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/boot/app-boot/package.json b/packages/boot/app-boot/package.json
index ead19a0d41..6bcc5fa3d2 100644
--- a/packages/boot/app-boot/package.json
+++ b/packages/boot/app-boot/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-app-boot",
   "description": "Shared boot glue for the app bins: .env loading, fail-loud Loader guards, snapshot-aware config resolution, and the Loader boot sequence",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/boot/app-boot/src/index.ts b/packages/boot/app-boot/src/index.ts
index acab24ebe4..b89eb3632a 100644
--- a/packages/boot/app-boot/src/index.ts
+++ b/packages/boot/app-boot/src/index.ts
@@ -340,9 +340,7 @@ async function recompose(
       diagnostic: failure.entry.fiber?.uid ? reloadDiagnostic(failure) : undefined,
     }))
     // Removed entries leave the Loader store before their async disposers finish.
-    const previousFibers = [...ctx.loader.entries()].flatMap(row => row.fiber === undefined ? [] : [{
-      fiber: row.fiber, failed: row.fiber.state === FIBER_FAILED || row.fiber.state === FIBER_DISPOSED,
-    }])
+    const previousFibers = [...ctx.loader.entries()].flatMap(row => row.fiber === undefined ? [] : [row.fiber])
     const { patches: previous = [], ...includeConfig } = entry.options.config as Include.Config
     const current = withResolution ? ctx.get('pluginPackages')?.resolution : undefined
     // A plain-data resolution has no inputs to recompute from.
@@ -386,12 +384,15 @@ async function recompose(
     const prepared = prepareProfilePatches(ctx, patches, parentURL, binName)
     applying = true
     const retried = [...new Set([...running, ...withResolution ? [...ctx.loader.entries()].filter(importFailed) : []])]
+    // Group.update replaces its data array and attempts every row it still lists, including failed imports.
+    const priorData = new Map(retried.map(row => [row, row.parent.data]))
     try {
       await entry.update({ config: { ...includeConfig, patches: prepared } })
     } finally {
-      await resume(ctx, retried)
+      // Only rows whose Group did not update still need an explicit retry after the awaited update.
+      await resume(ctx, retried.filter(row => row.parent.data === priorData.get(row)))
     }
-    const results = await Promise.allSettled(previousFibers.map(({ fiber }) => fiber.await()))
+    await Promise.allSettled(previousFibers.map(fiber => fiber.await()))
     await ctx.loader.await()
     const failures = await inactiveEntries(ctx)
     const introduced = failures.filter((failure) => {
@@ -403,9 +404,6 @@ async function recompose(
       return !previousFailures.some(previous => sameFailure(previous, failure))
     })
     if (introduced.length > 0) throw new Error(activationDiagnostic(binName, introduced, false).trimEnd())
-    for (const [index, result] of results.entries()) {
-      if (result.status === 'rejected' && !previousFibers[index]?.failed) throw result.reason
-    }
     ctx.emit('app-boot/config-reload')
     return { warnings: failures.map(reloadDiagnostic) }
   } finally {
@@ -1224,11 +1222,6 @@ export async function boot(
   try {
     ctx.baseUrl = pathToFileURL(dirname(absoluteConfigPath)).href + '/'
     ctx.provide('dshHomePath', dshHomePath)
-    // Fiber.update() discards the restart promise. Observe it before the
-    // waterfall returns; activation audits still report the failed fiber.
-    ctx.on('internal/update', (_config, _noSave, next: () => unknown) => {
-      void Promise.resolve(next()).catch((error: unknown) => { ctx.logger.error(error) })
-    }, { global: true, prepend: true })
     await ctx.plugin(Loader)
     await prepare?.(ctx)
     stage = 'plugin tree failed to load'
diff --git a/packages/boot/app-boot/src/startup-diagnostics.ts b/packages/boot/app-boot/src/startup-diagnostics.ts
index 7982ccc111..c9fe729935 100644
--- a/packages/boot/app-boot/src/startup-diagnostics.ts
+++ b/packages/boot/app-boot/src/startup-diagnostics.ts
@@ -90,7 +90,7 @@ export function captureStartupComposition(ctx: Context): StartupCompositionDiagn
         const impl = store[key]
         if (impl?.name !== service) continue
         providers.push({
-          entry: impl.fiber.entry?.id ?? 'unknown', state: stateName(impl.fiber.state),
+          entry: impl.ctx.fiber.entry?.id ?? 'unknown', state: stateName(impl.ctx.fiber.state),
           visibility: key === scope ? 'same-scope' : 'other-scope',
         })
       }
diff --git a/packages/boot/app-boot/tests/user-patches.spec.ts b/packages/boot/app-boot/tests/user-patches.spec.ts
index 63e0af5ea6..5b0257aac1 100644
--- a/packages/boot/app-boot/tests/user-patches.spec.ts
+++ b/packages/boot/app-boot/tests/user-patches.spec.ts
@@ -254,6 +254,11 @@ describe('Loader config interpolation', () => {
       await provider?.update({ config: { value: 'recovered' } })
       await provider?.update({ disabled: false })
       await ctx.loader.await()
+      // rc.11 keeps a failed fiber failed after its dependency recovers; recovery requires an explicit update.
+      const failed = reader?.fiber
+      if (failed === undefined) throw new Error('reader entry has no fiber')
+      await expect(failed.await()).rejects.toThrow('rejected provider')
+      await failed.update(failed.rawConfig, true)
       expect(ctx.get('readerResult')).toEqual({ value: 'recovered' })
     } finally {
       await ctx.fiber.dispose()
@@ -360,7 +365,7 @@ describe('profile reconciliation settlement', () => {
     onTestFinished(() => ctx.fiber.dispose())
     const entry = [...ctx.loader.entries()].find(row => row.options.id === 'candidate')
     if (entry === undefined) throw new Error('candidate entry missing')
-    await entry.update({ config: { fail: true } })
+    await expect(entry.update({ config: { fail: true } })).rejects.toThrow('candidate activation failed')
     await ctx.loader.await()
     await reconcileProfilePatches(ctx, [], NAME)
     expect([...ctx.loader.entries()].some(row => row.options.id === 'candidate')).toBe(false)
@@ -379,7 +384,7 @@ describe('profile reconciliation settlement', () => {
       .rejects.toThrow('candidate activation failed')
   })
 
-  it('reports an activation failure that settles while its entry is being removed', async () => {
+  it('logs a superseded activation failure without failing removal', async () => {
     const dir = tmp()
     const entered = Promise.withResolvers<undefined>()
     const release = Promise.withResolvers<undefined>()
@@ -390,11 +395,19 @@ describe('profile reconciliation settlement', () => {
     })
     onTestFinished(async () => { release.resolve(undefined); await ctx.fiber.dispose() })
     const entry = [...ctx.loader.entries()].find(row => row.options.id === 'candidate')!
-    await entry.update({ config: { fail: true } })
+    const updating = entry.update({ config: { fail: true } })
     await entered.promise
-    const result = expect(reconcileProfilePatches(ctx, [], NAME)).rejects.toThrow('in-flight failure')
+    const stopped = Promise.withResolvers<undefined>()
+    ctx.on('internal/plugin', (fiber) => {
+      if (fiber.uid === null && fiber.entry === entry) stopped.resolve(undefined)
+    })
+    const removing = reconcileProfilePatches(ctx, [], NAME)
+    await stopped.promise
     release.resolve(undefined)
-    await result
+    await Promise.all([updating, removing])
+    expect([...ctx.loader.entries()].some(row => row.options.id === 'candidate')).toBe(false)
+    expect(ctx.logger.buffer.some(message => message.type === 'error'
+      && message.args.some(value => String(value).includes('in-flight failure')))).toBe(true)
   })
 
   it('waits for a removed plugin to release its resources', async () => {
diff --git a/packages/boot/cmdline/package.json b/packages/boot/cmdline/package.json
index bb273c3517..04f5f23be1 100644
--- a/packages/boot/cmdline/package.json
+++ b/packages/boot/cmdline/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-cmdline",
   "description": "Immutable command-line handoff from a dsh launcher to any app plugin that injects cmdlineArgs",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/boot/config-editor/package.json b/packages/boot/config-editor/package.json
index e4bfc46918..783ce890db 100644
--- a/packages/boot/config-editor/package.json
+++ b/packages/boot/config-editor/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-config-editor",
   "description": "Persist plugin configuration through profile patches and Loader reconciliation",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/boot/hmr/package.json b/packages/boot/hmr/package.json
index 76f1874831..eeba988bfb 100644
--- a/packages/boot/hmr/package.json
+++ b/packages/boot/hmr/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-hmr",
   "description": "Coordinated module and profile configuration hot reload",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/boot/hmr/src/index.ts b/packages/boot/hmr/src/index.ts
index 709524d741..36c16ba6ac 100644
--- a/packages/boot/hmr/src/index.ts
+++ b/packages/boot/hmr/src/index.ts
@@ -678,10 +678,12 @@ class Hmr extends Service {
       activated: Fiber[] = [],
     ) => {
       for (const [previousFiber, implementation] of replacements.getActiveImplementations(this.ctx, plugin, fibers)) {
-        const fiber = previousFiber.fiber.parent.registry.plugin(implementation, previousFiber.config, this.getOuterStack).ctx.fiber
+        const wrapper = previousFiber.fiber.parent.registry.plugin(implementation, previousFiber.config, this.getOuterStack)
+        const fiber = wrapper.ctx.fiber
         if (previousFiber.entry !== undefined) {
           fiber.entry = previousFiber.entry
-          previousFiber.entry.fiber = fiber
+          // Like Loader activation, store the registry wrapper; identity checks compare `.ctx.fiber`.
+          previousFiber.entry.fiber = wrapper
         }
         activated.push(fiber)
       }
@@ -831,7 +833,7 @@ class Hmr extends Service {
       const owner = (fiber: Fiber): Entry | undefined => {
         for (let current = fiber; current.uid !== 0; current = current.parent.fiber) {
           const entry = current.entry
-          if (entry?.fiber === current && managed.has(entry) && affectedFibers.has(current)) return entry
+          if (entry?.fiber?.ctx.fiber === current && managed.has(entry) && affectedFibers.has(current)) return entry
         }
         return undefined
       }
diff --git a/packages/boot/hmr/tests/coordination.spec.ts b/packages/boot/hmr/tests/coordination.spec.ts
index b3660828e9..e0dceccb99 100644
--- a/packages/boot/hmr/tests/coordination.spec.ts
+++ b/packages/boot/hmr/tests/coordination.spec.ts
@@ -218,7 +218,7 @@ it('rebinds configuration handlers when its provider is reconfigured within a re
   })
   await binding.await()
   await hmr.runExclusive(async () => {
-    provider.update({ root: [], ignored: [], debounce: 1 })
+    await provider.update({ root: [], ignored: [], debounce: 1 })
     await provider.await()
     await binding.await()
   })
diff --git a/packages/boot/plugin-manager/README.i18n.yaml b/packages/boot/plugin-manager/README.i18n.yaml
index 9e99e269d0..2b95a68b06 100644
--- a/packages/boot/plugin-manager/README.i18n.yaml
+++ b/packages/boot/plugin-manager/README.i18n.yaml
@@ -15,8 +15,8 @@
   en: 87679c51aa3693f5
   zh: 11684a48a5806afb
 /deepseek-ai-dsh-plugin-manager/use-this-package:
-  en: c687e0162da2967d
-  zh: d7c65e23d84e7cdf
+  en: ae0905aa47cc971d
+  zh: b22fc6e831fac136
 /deepseek-ai-dsh-plugin-manager/use-this-package/version-compatibility-and-exemptions:
   en: 483285658e267dd5
   zh: 846bec2daac59a96
diff --git a/packages/boot/plugin-manager/README.md b/packages/boot/plugin-manager/README.md
index 4f1f05d774..a06788d42a 100644
--- a/packages/boot/plugin-manager/README.md
+++ b/packages/boot/plugin-manager/README.md
@@ -57,7 +57,7 @@ Official on-demand installs call the same `installBundle` operation as other bun
 
 `updateBundle(name, version, options)` replaces an updatable bundle with an exact newer version; an older version is refused. The target is first viewed over the same plan as `listVersions`, and a version that is missing, declares no bundle, or whose `engines.dsh` or DSH peers reject the running DSH stops the update at `step: 'check'` with the profile unchanged. With HMR the update removes the installed version, so its plugins stop, then installs `name@version` with `saveExact` and the current selection from the registry that answered. When that installation fails, is cancelled, or installs but cannot start, the target is removed if it stayed and the removed version is installed again from the registry it was installed from in this process, else over the configured plan as its removal asks, and reported as `restore`; a reinstallation that also fails leaves the package uninstalled. A removal or installation that rejects, for example on a lock timeout, is reported as that step's failure. Without HMR the target is installed over the running version and the result reports `restart-required`. `plugin-manager/update-state` announces `checking`, `removing`, `installing`, and `restoring` under the caller's `requestId`; the target's installation streams its logs and accepts `cancelInstall` under the same id, while the reinstallation carries none, so a cancellation cannot stop it.
 
-`installBundle` checks GitHub repositories with `git ls-remote` before starting pnpm, using the profile directory and the installer's Git and proxy configuration. `githubConnectionTimeoutMs` defaults to 5000 ms and limits only this check, not package download or builds. The check disables credential helpers and prompts; only network failures and timeouts stop installation, reporting `failedAt: 'spec-host'` with the existing failure kind and diagnostic log. Authentication, repository lookup and other failures are left to pnpm, including its HTTPS-to-SSH fallback. Cancellation and manager disposal stop the check and its descendants. Registry packages, paths, tarballs and other Git hosts skip this check. A reachable repository can still fail during download or bundle validation.
+`installBundle` checks GitHub repositories with `git ls-remote` before starting pnpm, using the profile directory and the installer's Git and proxy configuration. `githubConnectionTimeoutMs` defaults to 5000 ms and limits only this check, not package download or builds. The check disables credential helpers and prompts; only network failures and timeouts stop installation, reporting `failedAt: 'spec-host'` with the existing failure kind and diagnostic log. A stopped installation streams that failure under its `requestId` as the installation's only `plugin-manager/install-log` run, named by the `git ls-remote` command line with any URL user information removed; a timed-out check reports no exit code. The answer's `packageResult` stays a plain result, without the command line. Authentication, repository lookup and other failures are left to pnpm, including its HTTPS-to-SSH fallback. Cancellation and manager disposal stop the check and its descendants. Registry packages, paths, tarballs and other Git hosts skip this check. A reachable repository can still fail during download or bundle validation.
 
 An HTTP(S) Git URL on a host for which pnpm has no HTTPS-to-SSH fallback, that is, any host `hosted-git-info` does not know, such as a self-hosted GitLab, is probed with `git ls-remote` before pnpm starts. The probe uses the installer's Git configuration and credential helpers with Git's terminal and askpass prompts disabled; on POSIX it also has no controlling terminal, so SSH cannot prompt. When HTTP(S) cannot read the repository and `ssh://git@<host>/<path>` can, pnpm installs that SSH URL with the original fragment, and the profile records it. Otherwise the spec is installed unchanged. Each probe is bounded by `gitTransportTimeoutMs`, 5000 ms by default; cancellation and manager disposal stop it. URLs with credentials or a query skip the probe.
 
@@ -65,7 +65,7 @@ Registries are asked in turn. The plan starts at `options.registry`, else the co
 
 The browser-safe `@deepseek-ai/dsh-plugin-manager/registry` entry exports `OFFICIAL_NPM_REGISTRY` and `NPMMIRROR_REGISTRY` for consumers that identify those public registries.
 
-`installBundle` accepts a caller-generated `requestId`, under which `plugin-manager/install-log` streams each pnpm run's output and `plugin-manager/install-state` announces `installing`, `cancelling`, and `applying`; `installing` is announced once per registry asked, with the `attempt`'s registry, position, and the plan's length. The install asks the same plan as the lookup, from `options.registry`, running `pnpm add` with `--registry` and restoring the profile files between attempts; it moves on for the failures another registry can change and stops at any other, and at a failure whose error line names the host a git or tarball spec is fetched from, which no registry stands in for; `failedAt` says which of the two the last failed run could not reach. `cancelInstall(requestId)` stops the run and answers `cancelled` only after the Git check or pnpm exited and the files are back, `too-late` once the bundle is being applied, and `not-running` for any other id; the install call then reports `application: 'cancelled'`. A run that fails, is cancelled, or adds a package without a bundle patch restores `package.json` and `pnpm-lock.yaml` as they were; `packageResult.kind` classifies the last run from its exit and output, `registries` names every registry asked, `bundle` names the package a finished run added, and `version` its manifest version, which can differ from the version `inspect` read, for example when pnpm's `minimumReleaseAge` holds back a recent release. `listBundles` carries each bundle's one-liner (the package `description`), the rows its patch declares with their live entries, and the built-in rows it overrides; it lists the profile's own bundles, the bundles the installation supplies, and a selected name without a bundle patch as a `not-bundle` problem, while an unselected plain dependency is left out. A bundle the launcher's `OPTIONAL_BUNDLES` names is `optional`: shipped switched off for the person to turn on, never removable, and selected by no shipped template ([rationale](../../../.agents/notes/implemented/process/2026-09-15-shipped-optional-bundles.md)). Every completed operation emits `plugin-manager/changed`; a patch generation applied outside the manager, by HMR's watcher after a CLI or hand edit, announces nothing, so the page learns of it on its next read.
+`installBundle` accepts a caller-generated `requestId`, under which `plugin-manager/install-log` streams each pnpm run's output and `plugin-manager/install-state` announces `installing`, `cancelling`, and `applying`; a pnpm run that fails without printing streams the diagnostic its log carries, so the details panel is not left empty. `installing` is announced once per registry asked, with the `attempt`'s registry, position, and the plan's length. The install asks the same plan as the lookup, from `options.registry`, running `pnpm add` with `--registry` and restoring the profile files between attempts; it moves on for the failures another registry can change and stops at any other, and at a failure whose error line names the host a git or tarball spec is fetched from, which no registry stands in for; `failedAt` says which of the two the last failed run could not reach. `cancelInstall(requestId)` stops the run and answers `cancelled` only after the Git check or pnpm exited and the files are back, `too-late` once the bundle is being applied, and `not-running` for any other id; the install call then reports `application: 'cancelled'`. A run that fails, is cancelled, or adds a package without a bundle patch restores `package.json` and `pnpm-lock.yaml` as they were; `packageResult.kind` classifies the last run from its exit and output, `registries` names every registry asked, `bundle` names the package a finished run added, and `version` its manifest version, which can differ from the version `inspect` read, for example when pnpm's `minimumReleaseAge` holds back a recent release. `listBundles` carries each bundle's one-liner (the package `description`), the rows its patch declares with their live entries, and the built-in rows it overrides; it lists the profile's own bundles, the bundles the installation supplies, and a selected name without a bundle patch as a `not-bundle` problem, while an unselected plain dependency is left out. A bundle the launcher's `OPTIONAL_BUNDLES` names is `optional`: shipped switched off for the person to turn on, never removable, and selected by no shipped template ([rationale](../../../.agents/notes/implemented/process/2026-09-15-shipped-optional-bundles.md)). Every completed operation emits `plugin-manager/changed`; a patch generation applied outside the manager, by HMR's watcher after a CLI or hand edit, announces nothing, so the page learns of it on its next read.
 
 `waitForInstall(requestId)` lets a client recover a lost response by waiting for the active installation, including its non-cancellable application phase. It returns the same outcome as the original call, or `null` if the request is not active. Completed results are not retained; `null` establishes neither success nor cancellation.
 
diff --git a/packages/boot/plugin-manager/README.zh.md b/packages/boot/plugin-manager/README.zh.md
index 3c7eb08c06..db1c756fae 100644
--- a/packages/boot/plugin-manager/README.zh.md
+++ b/packages/boot/plugin-manager/README.zh.md
@@ -57,7 +57,7 @@ kind: "package-reference"
 
 `updateBundle(name, version, options)` 把可更新的组合包替换为一个更新的确切版本；更旧的版本会被拒绝。目标版本先按与 `listVersions` 相同的计划查询，版本不存在、未声明组合包，或其 `engines.dsh` 或 DSH peer 拒绝当前 DSH 时，更新停在 `step: 'check'`，profile 保持不变。有 HMR 时，更新先移除已安装版本，使其插件停止，再以 `saveExact` 和当前的选中状态从作答的注册表安装 `name@version`。该安装失败、被取消，或已安装但无法启动时，先移除仍留下的目标版本，再从本进程安装被移除版本所用的注册表重新安装它，没有记录时按配置的计划安装，与移除的做法一致，结果以 `restore` 报告；重新安装也失败时，包处于未安装状态。移除或安装被拒绝（例如锁等待超时）时，报告为该步骤失败。没有 HMR 时，目标版本直接安装在运行中的版本之上，结果报告 `restart-required`。`plugin-manager/update-state` 以调用方的 `requestId` 通告 `checking`、`removing`、`installing` 与 `restoring`；目标版本的安装以同一 id 流式输出日志并接受 `cancelInstall`，重新安装不带 id，因此取消无法中止它。
 
-`installBundle` 在启动 pnpm 前通过 `git ls-remote` 检查 GitHub 仓库，使用 profile 目录及安装器的 Git 与代理配置。`githubConnectionTimeoutMs` 默认为 5000 毫秒，只限制这次检查，不限制包下载或构建。检查禁用凭据助手和认证提示；只有网络失败与超时会停止安装，通过现有失败类型与诊断日志返回，并标记 `failedAt: 'spec-host'`。认证、仓库查找及其他失败继续交给 pnpm，包括其 HTTPS 到 SSH 的回退。取消安装或销毁管理器会停止检查及其子进程。注册表包、本地路径、压缩包和其他 Git 主机跳过此检查。仓库可达后，下载或组合包验证仍可能失败。
+`installBundle` 在启动 pnpm 前通过 `git ls-remote` 检查 GitHub 仓库，使用 profile 目录及安装器的 Git 与代理配置。`githubConnectionTimeoutMs` 默认为 5000 毫秒，只限制这次检查，不限制包下载或构建。检查禁用凭据助手和认证提示；只有网络失败与超时会停止安装，通过现有失败类型与诊断日志返回，并标记 `failedAt: 'spec-host'`。被停止的安装会以调用方的 `requestId` 把该失败转发为这次安装唯一的 `plugin-manager/install-log` 运行，其命令行是去掉 URL 用户信息的 `git ls-remote`；因超时结束的检查不报告退出码。应答中的 `packageResult` 仍是普通结果，不含该命令行。认证、仓库查找及其他失败继续交给 pnpm，包括其 HTTPS 到 SSH 的回退。取消安装或销毁管理器会停止检查及其子进程。注册表包、本地路径、压缩包和其他 Git 主机跳过此检查。仓库可达后，下载或组合包验证仍可能失败。
 
 HTTP(S) Git URL 指向 pnpm 没有 HTTPS 到 SSH 回退的主机（即 `hosted-git-info` 不认识的任何主机，例如自托管 GitLab）时，在启动 pnpm 前通过 `git ls-remote` 探测。探测使用安装器的 Git 配置与凭据助手，并禁用 Git 的终端与 askpass 提示；在 POSIX 上探测也没有控制终端，因此 SSH 无法提示。HTTP(S) 无法读取仓库而 `ssh://git@<host>/<path>` 可以读取时，pnpm 以该 SSH URL 加上原片段安装，profile 也记录该 URL。否则按原 spec 安装。每次探测受 `gitTransportTimeoutMs` 限制，默认为 5000 毫秒；取消安装或销毁管理器会停止探测。带凭据或查询串的 URL 跳过探测。
 
@@ -65,7 +65,7 @@ HTTP(S) Git URL 指向 pnpm 没有 HTTPS 到 SSH 回退的主机（即 `hosted-g
 
 可在浏览器使用的 `@deepseek-ai/dsh-plugin-manager/registry` 入口导出 `OFFICIAL_NPM_REGISTRY` 和 `NPMMIRROR_REGISTRY`，供消费方识别这两个公共注册表。
 
-`installBundle` 接受调用方生成的 `requestId`，`plugin-manager/install-log` 在其下流式转发每次 pnpm 运行的输出，`plugin-manager/install-state` 通告 `installing`、`cancelling` 与 `applying`；每问一个注册表通告一次 `installing`，`attempt` 带上这次的注册表、序号和计划长度。安装沿用查询的计划，从 `options.registry` 开始，以 `--registry` 运行 `pnpm add`，两次尝试之间恢复 profile 文件；换一个注册表能改变的失败才转问下一个，其他失败即停，错误行点名 git 或 tarball spec 自身拉取主机的失败也停，因为没有注册表能替代那台主机；`failedAt` 说明最后一次失败的运行连不上的是二者中的哪一个。`cancelInstall(requestId)` 停止运行，只在 Git 检查或 pnpm 退出且文件恢复后答复 `cancelled`，组合包已在应用时答复 `too-late`，其他 id 答复 `not-running`；安装调用随后报告 `application: 'cancelled'`。失败、被取消或装入了没有组合包 patch 的包的运行，会把 `package.json` 与 `pnpm-lock.yaml` 恢复原样；`packageResult.kind` 按退出方式与输出对最后一次运行分类，`registries` 列出问过的每个注册表，`bundle` 给出完成的运行新增的包，`version` 给出它的清单版本，它可能与 `inspect` 读到的版本不同，例如 pnpm 的 `minimumReleaseAge` 暂缓了最近的发布。`listBundles` 携带每个组合包的一句话简介（包的 `description`）、其 patch 声明的行及其存活条目，以及它覆盖的内置行；它列出 profile 自己的组合包、安装提供的组合包，以及被选中却没有组合包 patch 的名字（作为 `not-bundle` 问题），未选中的普通依赖不列出。启动器的 `OPTIONAL_BUNDLES` 点名的组合包是 `optional`：随安装提供、默认关闭、由用户开启，永不可卸载，也不被任何随附模板选中（[理由](../../../.agents/notes/implemented/process/2026-09-15-shipped-optional-bundles.zh.md)）。每个完成的操作都会发出 `plugin-manager/changed`；在管理器之外应用的一代 patch（HMR 监视到 CLI 或手工编辑后）不发通知，页面要到下一次读取才知道。
+`installBundle` 接受调用方生成的 `requestId`，`plugin-manager/install-log` 在其下流式转发每次 pnpm 运行的输出，`plugin-manager/install-state` 通告 `installing`、`cancelling` 与 `applying`；未打印任何输出就失败的 pnpm 运行转发其日志中的诊断，详情面板因而不会为空。每问一个注册表通告一次 `installing`，`attempt` 带上这次的注册表、序号和计划长度。安装沿用查询的计划，从 `options.registry` 开始，以 `--registry` 运行 `pnpm add`，两次尝试之间恢复 profile 文件；换一个注册表能改变的失败才转问下一个，其他失败即停，错误行点名 git 或 tarball spec 自身拉取主机的失败也停，因为没有注册表能替代那台主机；`failedAt` 说明最后一次失败的运行连不上的是二者中的哪一个。`cancelInstall(requestId)` 停止运行，只在 Git 检查或 pnpm 退出且文件恢复后答复 `cancelled`，组合包已在应用时答复 `too-late`，其他 id 答复 `not-running`；安装调用随后报告 `application: 'cancelled'`。失败、被取消或装入了没有组合包 patch 的包的运行，会把 `package.json` 与 `pnpm-lock.yaml` 恢复原样；`packageResult.kind` 按退出方式与输出对最后一次运行分类，`registries` 列出问过的每个注册表，`bundle` 给出完成的运行新增的包，`version` 给出它的清单版本，它可能与 `inspect` 读到的版本不同，例如 pnpm 的 `minimumReleaseAge` 暂缓了最近的发布。`listBundles` 携带每个组合包的一句话简介（包的 `description`）、其 patch 声明的行及其存活条目，以及它覆盖的内置行；它列出 profile 自己的组合包、安装提供的组合包，以及被选中却没有组合包 patch 的名字（作为 `not-bundle` 问题），未选中的普通依赖不列出。启动器的 `OPTIONAL_BUNDLES` 点名的组合包是 `optional`：随安装提供、默认关闭、由用户开启，永不可卸载，也不被任何随附模板选中（[理由](../../../.agents/notes/implemented/process/2026-09-15-shipped-optional-bundles.zh.md)）。每个完成的操作都会发出 `plugin-manager/changed`；在管理器之外应用的一代 patch（HMR 监视到 CLI 或手工编辑后）不发通知，页面要到下一次读取才知道。
 
 `waitForInstall(requestId)` 让客户端在响应丢失后等待活动安装的结果，包括不可取消的应用阶段。它返回与原调用相同的结果，请求不在活动中时返回 `null`。已完成的结果不保留；`null` 不表示成功或已取消。
 
diff --git a/packages/boot/plugin-manager/package.json b/packages/boot/plugin-manager/package.json
index c5e7b6bf22..cee821053b 100644
--- a/packages/boot/plugin-manager/package.json
+++ b/packages/boot/plugin-manager/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-plugin-manager",
   "description": "Current-profile plugin and bundle management shared by dsh CLI, Web and agent tools",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/boot/plugin-manager/src/github-connection.ts b/packages/boot/plugin-manager/src/github-connection.ts
index 99b64fd73c..e2d349c734 100644
--- a/packages/boot/plugin-manager/src/github-connection.ts
+++ b/packages/boot/plugin-manager/src/github-connection.ts
@@ -4,9 +4,21 @@ import { join } from 'node:path'
 import { execa } from 'execa'
 import { scrubbedParentEnv } from '@deepseek-ai/dsh-subprocess'
 import { classifyInstallFailure } from './install-failure.ts'
-import type { ParsedInstallSpec } from './install-spec.ts'
+import { HTTP_USER_INFO, type ParsedInstallSpec } from './install-spec.ts'
 import type { PackageResult } from './types.ts'
 
+/**
+ * A failed check, with the Git command line the install dialog shows as the installation's only run.
+ * The returned result itself stays a plain {@link PackageResult}: the command line never joins the wire fields.
+ */
+export interface GithubConnectionFailure extends PackageResult {
+  /**
+   * The `git` command line the check ran, with the user information of an http(s) repository URL removed:
+   * `git -c credential.helper= ls-remote -- <repository> HEAD`.
+   */
+  readonly argv: readonly string[]
+}
+
 /** Deadline, diagnostics and cancellation for one read-only GitHub check. */
 export interface GithubConnectionOptions {
   timeoutMs: number
@@ -23,11 +35,12 @@ export interface GithubConnectionOptions {
  * @param spec The parsed installation address; npm packages, local paths and other hosts are not checked.
  * @param dir The profile directory where installation runs.
  * @param options The connection deadline, output bound and operation cancellation.
- * @returns A failed check with bounded output and a complete log at logPath, or undefined for a reachable repository or an unhandled spec.
+ * @returns A failed check carrying the command line it ran (without URL user information) and its bounded output, with a
+ * complete log at logPath, or undefined for a reachable repository or an unhandled spec.
  */
 export async function checkGithubConnection(
   spec: ParsedInstallSpec, dir: string, options: GithubConnectionOptions,
-): Promise<PackageResult | undefined> {
+): Promise<GithubConnectionFailure | undefined> {
   if (spec.kind !== 'git') return undefined
   const host = spec.host.toLowerCase().replace(/:.*$/, '')
   if (host !== 'github.com' && !host.endsWith('.github.com')) return undefined
@@ -40,8 +53,12 @@ export async function checkGithubConnection(
   const logDir = await mkdtemp(join(logRoot, 'github-connection-'))
   const logPath = join(logDir, 'git.log')
   const log = await open(logPath, 'ax+', 0o600)
+  const argv = ['git', '-c', 'credential.helper=', 'ls-remote', '--', repository, 'HEAD'] as const
+  // The executed command keeps any credentials the spec names; the recorded one drops them before it is displayed.
+  const recordedArgv = argv.map(argument => argument.replace(HTTP_USER_INFO, '$1'))
+  const [command, ...args] = argv
   try {
-    const result = await execa('git', ['-c', 'credential.helper=', 'ls-remote', '--', repository, 'HEAD'], {
+    const result = await execa(command, args, {
       cwd: dir,
       env: {
         ...scrubbedParentEnv(), ...options.env, LC_ALL: 'C', GIT_TERMINAL_PROMPT: '0',
@@ -58,9 +75,13 @@ export async function checkGithubConnection(
     const bytes = Buffer.alloc(Math.min(size, options.outputBytes))
     await log.read(bytes, 0, bytes.length, size - bytes.length)
     const output = bytes.toString('utf8')
+    // `PackageResult.exitCode` is a status number, so a Git the deadline stopped records the status its failure is read
+    // as. The run streamed for the same failure reports no exit code, because that process ended without one.
     return {
-      exitCode: result.exitCode ?? (result.code === 'ENOENT' ? 127 : 1), output, truncated: size > options.outputBytes, logPath,
+      argv: recordedArgv, exitCode: result.exitCode ?? (result.code === 'ENOENT' ? 127 : 1),
+      output, truncated: size > options.outputBytes, logPath,
       kind: classifyInstallFailure({ log: output, timedOut: result.timedOut }),
+      ...result.timedOut ? { timedOut: true } : {},
     }
   } finally {
     await log.close()
diff --git a/packages/boot/plugin-manager/src/index.ts b/packages/boot/plugin-manager/src/index.ts
index 271e6af0d3..ceb82aac47 100644
--- a/packages/boot/plugin-manager/src/index.ts
+++ b/packages/boot/plugin-manager/src/index.ts
@@ -36,7 +36,7 @@ import { attributeFailure, normalizeRegistry, NPMMIRROR_REGISTRY, registryPlan }
 import { flatten, writePluginEnabled } from './patch.ts'
 import { incompatiblePlugin, ManagementFailure } from './failure.ts'
 import { approveBuilds, recordPendingBuilds } from './build-approval.ts'
-import { checkGithubConnection } from './github-connection.ts'
+import { checkGithubConnection, type GithubConnectionFailure } from './github-connection.ts'
 import { chooseGitTransport, sshGitSpec } from './git-transport.ts'
 import { newerVersions, VERSION_FIELDS, VERSION_LIST_FIELDS, versionFacts } from './versions.ts'
 import type {
@@ -522,6 +522,7 @@ export class PluginManager extends TypertRemoteService {
         catch (error) { platformError = managementError(error) }
         const error = platformError ?? targetError ?? (enabled ? { code: 'not-bundle' as const } : undefined)
         bundles.push({ name, official, availability: 'missing', ...catalogMeta, ...target, enabled, installed, optional,
+          ...offered.listedByDefault === undefined ? {} : { listedByDefault: offered.listedByDefault },
           ...platformError?.code === 'unsupported-platform' ? { listedByDefault: false } : {},
           removable: enabled, rows: [], overrides: [],
           ...error === undefined ? {} : { error } })
@@ -857,7 +858,8 @@ export class PluginManager extends TypertRemoteService {
   /**
    * Install a package using the same pnpm implementation as dsh plugin. GitHub
    * repositories get a connection check bounded by githubConnectionTimeoutMs before pnpm starts;
-   * only network failures or timeouts stop installation, while pnpm owns authentication and transport fallback. An
+   * only network failures or timeouts stop installation, and a stop streams the check's diagnostic
+   * as the installation's install-log run under its request id, while pnpm owns authentication and transport fallback. An
    * HTTP(S) Git URL on another host is installed over SSH instead when access probes bounded by gitTransportTimeoutMs
    * find that only SSH can read it. A run
    * that fails, is cancelled, or adds a package without a bundle patch restores
@@ -901,13 +903,23 @@ export class PluginManager extends TypertRemoteService {
           timeoutMs: this.githubConnectionTimeoutMs, outputBytes: this.outputBytes, signal, ...env,
         })
         this.packageOperations.add(connection)
-        let connectionFailure: PackageResult | undefined
+        let connectionFailure: GithubConnectionFailure | undefined
         try { connectionFailure = await connection }
         finally { this.packageOperations.delete(connection) }
         if (stopped()) throw new InstallCancelledError()
         if (connectionFailure?.kind === 'network' || connectionFailure?.kind === 'timeout') {
-          result.packageResult = connectionFailure
+          // The answer keeps a plain PackageResult; the check's command line is only streamed as the run below.
+          const { argv, ...packageResult } = connectionFailure
+          result.packageResult = packageResult
           result.failedAt = 'spec-host'
+          // pnpm never runs, so the check is the installation's only run: stream its failure into the install log.
+          // A timed-out Git reports no exit code of its own, unlike the result, which records the status it is read as.
+          if (requestId !== undefined) {
+            this.ownerContext.emit('plugin-manager/install-log', {
+              requestId, jobId: randomUUID(), argv, cwd: this.profile.dir, stream: 'stderr',
+              text: connectionFailure.output, exitCode: connectionFailure.timedOut === true ? null : connectionFailure.exitCode,
+            })
+          }
           throw new Error(connectionFailure.output)
         }
         const transport = chooseGitTransport(parsed, this.profile.dir, { timeoutMs: this.gitTransportTimeoutMs, signal, ...env })
diff --git a/packages/boot/plugin-manager/src/install-spec.ts b/packages/boot/plugin-manager/src/install-spec.ts
index 4b76f1925e..2fb6b64cca 100644
--- a/packages/boot/plugin-manager/src/install-spec.ts
+++ b/packages/boot/plugin-manager/src/install-spec.ts
@@ -94,7 +94,7 @@ export function parseInstallSpec(raw: string): ParsedInstallSpec {
 /** A recorded dependency value pnpm resolves outside a registry: a protocol other than a registry alias, or an scp-like git address. */
 const NON_REGISTRY_VALUE = /^(?!(?:npm|jsr|workspace|catalog):)[a-z][a-z0-9+.-]*:|^[^@/:\s]+@[^:/\s]+:/i
 /** The user information of an http(s) URL, up to the last `@` before the path, which holds a password or access token when present. */
-const HTTP_USER_INFO = /^((?:git\+)?https?:\/\/)[^/]*@/i
+export const HTTP_USER_INFO = /^((?:git\+)?https?:\/\/)[^/]*@/i
 
 /**
  * The spec `pnpm add` accepts for a dependency the profile manifest records. A git address, URL, or other
diff --git a/packages/boot/plugin-manager/src/operations.ts b/packages/boot/plugin-manager/src/operations.ts
index e7b761ad3c..d0ab1dccab 100644
--- a/packages/boot/plugin-manager/src/operations.ts
+++ b/packages/boot/plugin-manager/src/operations.ts
@@ -470,6 +470,8 @@ export async function runProfilePnpm(
     if (result.failed && output.length === 0) {
       const diagnostic = result.shortMessage ?? 'pnpm failed'
       await log.write(diagnostic)
+      // The run printed nothing, so this diagnostic is the whole of its captured output; stream it as such.
+      options.onOutput?.(diagnostic, 'stderr')
       truncated = Buffer.byteLength(diagnostic) > options.outputBytes
       output = Buffer.from(diagnostic).subarray(0, options.outputBytes)
     }
diff --git a/packages/boot/plugin-manager/src/types.ts b/packages/boot/plugin-manager/src/types.ts
index efef87b4dc..221607f1e8 100644
--- a/packages/boot/plugin-manager/src/types.ts
+++ b/packages/boot/plugin-manager/src/types.ts
@@ -139,13 +139,18 @@ export type PluginInstallFailureKind =
 
 /** Package operation completion, including Git checks and a retrieval path for unabridged diagnostics. */
 export interface PackageResult {
+  /** The status the run is read as having ended with; a run the manager terminated records the coerced status 1. */
   exitCode: number
   output: string
   truncated: boolean
   logPath: string
   /** Present when the run failed: what kind of failure its exit and output describe. */
   kind?: PluginInstallFailureKind
-  /** The manager terminated the run after it printed nothing for its silence bound; `exitCode` still reports how it ended. */
+  /**
+   * The run outlived its bound: the manager terminated it after it printed nothing for its silence bound, or the GitHub
+   * connection check hit its deadline. Such a run reports no exit status of its own, so `exitCode` records the status
+   * its failure is read as rather than a status the process returned.
+   */
   timedOut?: boolean
   /** Present when a compatibility check refused the run: the packages the running DSH version rejects. */
   incompatible?: IncompatiblePlugin[]
@@ -344,19 +349,19 @@ export interface PluginInstallCancellation {
   readonly status: 'cancelled' | 'too-late' | 'not-running'
 }
 
-/** One chunk of a pnpm run's output, as the run produces it. */
+/** One chunk of an installation run's output: a pnpm run, or the GitHub connection check that stopped it. */
 export interface PluginInstallLogChunk {
   /** The installation the run belongs to, when its caller supplied a request id. */
   readonly requestId?: PluginInstallRequestId
   /** The run the chunk belongs to. */
   readonly jobId: string
-  /** The command line the run executes: pnpm's command name, then its arguments. */
+  /** The command line the run executes: its command name, then its arguments. */
   readonly argv: readonly string[]
   /** The directory the run executes in: the profile directory. */
   readonly cwd: string
   readonly stream: 'stdout' | 'stderr'
   readonly text: string
-  /** Present on the run's last chunk: pnpm's exit code, null when it ended without one. */
+  /** Present on the chunk that ends a run: its exit code, null when the run ended without one. */
   readonly exitCode?: number | null
 }
 
@@ -426,7 +431,7 @@ declare module '@deepseek-ai/cordis' {
      */
     'plugin-manager/changed'(change: PluginChange): void
     /**
-     * One chunk of a pnpm run's output, streamed as the run produces it.
+     * One chunk of an installation run's output, streamed as the run produces it.
      * @mode emit
      * @param chunk - the chunk and the run it belongs to.
      */
diff --git a/packages/boot/plugin-manager/tests/github-connection.spec.ts b/packages/boot/plugin-manager/tests/github-connection.spec.ts
index 33dd34e067..e87ac53b8c 100644
--- a/packages/boot/plugin-manager/tests/github-connection.spec.ts
+++ b/packages/boot/plugin-manager/tests/github-connection.spec.ts
@@ -43,6 +43,9 @@ async function fixture() {
   return { dir, config, controller, check, env }
 }
 
+/** The exact command line a check runs for one repository URL. */
+const checkArgv = (repository: string): string[] => ['git', '-c', 'credential.helper=', 'ls-remote', '--', repository, 'HEAD']
+
 async function proxy(config: string, fail: boolean) {
   const sockets = new Set<Socket>()
   const connected = Promise.withResolvers<undefined>()
@@ -93,7 +96,9 @@ it('reports an immediate transport failure without waiting for the deadline', as
   const transport = await proxy(config, true)
   const result = await check('https://github.com/acme/plugin.git')
   await transport.connected
-  expect(result).toMatchObject({ exitCode: 128, kind: 'network', truncated: false })
+  expect(result).toMatchObject({
+    exitCode: 128, kind: 'network', truncated: false, argv: checkArgv('https://github.com/acme/plugin.git'),
+  })
   expect(await readFile(result!.logPath, 'utf8')).toBe(result!.output)
   await transport.disconnected
   expect(transport.sockets.size).toBe(0)
@@ -106,6 +111,8 @@ it('ends a silent proxy connection and its Git child at the connection deadline'
   await transport.connected
   const result = await running
   expect(result?.kind).toBe('timeout')
+  // The result records the status the terminated Git is read as; only the streamed run reports no exit code.
+  expect(result).toMatchObject({ exitCode: 1, timedOut: true, argv: checkArgv('https://github.com/acme/plugin.git') })
   expect(result!.output).toContain('connection to github.com timed out after 3000ms')
   await transport.disconnected
   expect(transport.sockets.size).toBe(0)
@@ -128,12 +135,15 @@ it.each([undefined, 'Git could not start'])('retains a diagnostic when Git write
   const run = vi.spyOn(subprocess, 'execa').mockResolvedValue({ failed: true, shortMessage } as Awaited<ReturnType<typeof subprocess.execa>>)
   onTestFinished(() => { run.mockRestore() })
   const result = await check('github:acme/plugin')
-  expect(result).toMatchObject({ exitCode: 1, kind: 'unknown', output: shortMessage ?? 'GitHub connection check failed' })
+  expect(result).toMatchObject({
+    exitCode: 1, kind: 'unknown', output: shortMessage ?? 'GitHub connection check failed',
+    argv: checkArgv('https://github.com/acme/plugin'),
+  })
   expect(await readFile(result!.logPath, 'utf8')).toBe(result!.output)
 })
 
 it('bounds returned diagnostics while retaining Git stderr in the operation log', async () => {
-  const { check } = await fixture()
+  const { check, dir } = await fixture()
   const run = vi.spyOn(subprocess, 'execa').mockImplementation((...args: unknown[]) => {
     const options = args[2] as { stderr: { file: string } }
     appendFileSync(options.stderr.file, '0123456789')
@@ -141,10 +151,24 @@ it('bounds returned diagnostics while retaining Git stderr in the operation log'
   })
   onTestFinished(() => { run.mockRestore() })
   const result = await check('github:acme/plugin', 3000, 4)
-  expect(result).toMatchObject({ output: '6789', truncated: true })
+  expect(result).toMatchObject({ output: '6789', truncated: true, argv: checkArgv('https://github.com/acme/plugin') })
+  // The recorded command line is the one Git actually ran.
+  expect(run).toHaveBeenCalledWith('git', checkArgv('https://github.com/acme/plugin').slice(1), expect.objectContaining({ cwd: dir }))
   expect(await readFile(result!.logPath, 'utf8')).toBe('0123456789')
 })
 
+it('keeps URL user information out of the recorded command line', async () => {
+  const { check } = await fixture()
+  const run = vi.spyOn(subprocess, 'execa').mockResolvedValue({
+    failed: true, exitCode: 128, shortMessage: 'fatal: unable to access the repository',
+  } as Awaited<ReturnType<typeof subprocess.execa>>)
+  onTestFinished(() => { run.mockRestore() })
+  const result = await check('https://user:token@github.com/acme/plugin.git')
+  // Git runs the address as typed so its own credentials keep working, while the recorded line is safe to display.
+  expect(run).toHaveBeenCalledWith('git', checkArgv('https://user:token@github.com/acme/plugin.git').slice(1), expect.anything())
+  expect(result?.argv).toEqual(checkArgv('https://github.com/acme/plugin.git'))
+})
+
 it('reports a missing Git executable without classifying it as a network failure', async () => {
   const { check } = await fixture()
   const run = vi.spyOn(subprocess, 'execa').mockResolvedValue({ failed: true, code: 'ENOENT', shortMessage: 'spawn git ENOENT' } as Awaited<ReturnType<typeof subprocess.execa>>)
diff --git a/packages/boot/plugin-manager/tests/manager.spec.ts b/packages/boot/plugin-manager/tests/manager.spec.ts
index 0f8290a48d..207f34291f 100644
--- a/packages/boot/plugin-manager/tests/manager.spec.ts
+++ b/packages/boot/plugin-manager/tests/manager.spec.ts
@@ -127,24 +127,50 @@ it('allows supported bundle activation and permits deselecting an unsupported sa
 })
 
 it.each(['network', 'timeout'] as const)('stops a GitHub %s before pnpm and attributes it to the repository', async (kind) => {
-  const { manager, dir, connection } = await fixture()
+  const { ctx, manager, dir, connection } = await fixture()
+  const chunks: PluginInstallLogChunk[] = []
+  ctx.on('plugin-manager/install-log', (chunk) => { chunks.push(chunk) })
   const before = readFileSync(join(dir, 'package.json'), 'utf8')
-  const failure = { exitCode: 1, output: 'GitHub check failed', truncated: false, logPath: join(dir, 'git.log'), kind }
-  connection.mockResolvedValue(failure)
+  const argv = ['git', '-c', 'credential.helper=', 'ls-remote', '--', 'https://github.com/acme/dsh-plugin.git', 'HEAD']
+  const checked = {
+    argv, exitCode: 1, output: 'GitHub check failed', truncated: false, logPath: join(dir, 'git.log'), kind,
+    ...kind === 'timeout' ? { timedOut: true } : {},
+  }
+  connection.mockResolvedValue(checked)
   const pnpm = vi.spyOn(operations, 'runProfilePnpm')
   onTestFinished(() => { pnpm.mockRestore() })
-  expect(await manager.installBundle('https://github.com/acme/dsh-plugin.git')).toMatchObject({
-    application: 'failed', changed: false, stage: 'install', failedAt: 'spec-host', packageResult: failure,
+  const requestId = '824103ec-bc45-489d-bb85-5b4fe0aefc78' as PluginInstallRequestId
+  const result = await manager.installBundle('https://github.com/acme/dsh-plugin.git', { requestId })
+  expect(result).toMatchObject({
+    application: 'failed', changed: false, stage: 'install', failedAt: 'spec-host',
+    packageResult: { exitCode: 1, output: 'GitHub check failed', truncated: false, logPath: join(dir, 'git.log'), kind },
   })
+  // The command line belongs to the streamed run only; the answer stays a plain package result.
+  expect(result.packageResult).not.toHaveProperty('argv')
   expect(pnpm).not.toHaveBeenCalled()
   expect(connection).toHaveBeenCalledWith(expect.objectContaining({ host: 'github.com' }), dir, expect.objectContaining({ timeoutMs: 5000 }))
   expect(readFileSync(join(dir, 'package.json'), 'utf8')).toBe(before)
+  // The check is the installation's only run, so its diagnostic reaches the details panel. A timed-out Git has no exit
+  // code of its own, so its chunk reports none instead of the status the timeout coerced.
+  expect(chunks).toEqual([{
+    requestId, jobId: expect.any(String) as string, argv, cwd: dir, stream: 'stderr', text: 'GitHub check failed',
+    exitCode: kind === 'timeout' ? null : 1,
+  }])
+  // Without a request id there is no installation to stream the failed check under.
+  chunks.length = 0
+  expect(await manager.installBundle('https://github.com/acme/dsh-plugin.git')).toMatchObject({ failedAt: 'spec-host' })
+  expect(chunks).toEqual([])
 })
 
 it('leaves non-network GitHub errors to pnpm and forwards profile Git environment and deadline', async () => {
   const env = { GIT_CONFIG_GLOBAL: '/application/git.config' }
-  const { manager, connection } = await fixture('live', false, undefined, { githubConnectionTimeoutMs: 8000 }, { command: 'pnpm', args: [], env })
-  connection.mockResolvedValue({ exitCode: 128, output: 'fatal: Authentication failed', truncated: false, logPath: 'git.log', kind: 'unknown' })
+  const { ctx, manager, connection } = await fixture('live', false, undefined, { githubConnectionTimeoutMs: 8000 }, { command: 'pnpm', args: [], env })
+  const chunks: PluginInstallLogChunk[] = []
+  ctx.on('plugin-manager/install-log', (chunk) => { chunks.push(chunk) })
+  connection.mockResolvedValue({
+    argv: ['git', '-c', 'credential.helper=', 'ls-remote', '--', 'https://github.com/acme/private-plugin', 'HEAD'],
+    exitCode: 128, output: 'fatal: Authentication failed', truncated: false, logPath: 'git.log', kind: 'unknown',
+  })
   const failure = { exitCode: 1, output: 'pnpm owns authentication', truncated: false, logPath: 'pnpm.log', kind: 'unknown' as const }
   const pnpm = vi.spyOn(operations, 'runProfilePnpm').mockResolvedValue(failure)
   onTestFinished(() => { pnpm.mockRestore() })
@@ -154,6 +180,8 @@ it('leaves non-network GitHub errors to pnpm and forwards profile Git environmen
   expect(pnpm).toHaveBeenCalledOnce()
   expect(result.failedAt).toBeUndefined()
   expect(connection).toHaveBeenCalledWith(expect.anything(), expect.anything(), expect.objectContaining({ timeoutMs: 8000, env }))
+  // A check failure pnpm may resolve streams no run of its own.
+  expect(chunks.filter(chunk => chunk.argv[0] === 'git')).toEqual([])
 })
 
 it('cancels an active GitHub check before starting pnpm', async () => {
@@ -162,7 +190,10 @@ it('cancels an active GitHub check before starting pnpm', async () => {
   connection.mockImplementation(async (_spec, _dir, options) => {
     entered.resolve(undefined)
     await new Promise<void>((resolve) => { options.signal.addEventListener('abort', () => { resolve() }, { once: true }) })
-    return { exitCode: 1, output: 'cancelled', truncated: false, logPath: 'git.log', kind: 'unknown' }
+    return {
+      argv: ['git', '-c', 'credential.helper=', 'ls-remote', '--', 'https://github.com/acme/dsh-plugin', 'HEAD'],
+      exitCode: 1, output: 'cancelled', truncated: false, logPath: 'git.log', kind: 'unknown',
+    }
   })
   const pnpm = vi.spyOn(operations, 'runProfilePnpm')
   onTestFinished(() => { pnpm.mockRestore() })
@@ -244,7 +275,10 @@ it('disposal waits for an active GitHub check to stop', async () => {
     entered.resolve(undefined)
     await new Promise<void>((resolve) => { options.signal.addEventListener('abort', () => { resolve() }, { once: true }) })
     released.resolve(undefined)
-    return { exitCode: 1, output: 'cancelled', truncated: false, logPath: 'git.log', kind: 'unknown' }
+    return {
+      argv: ['git', '-c', 'credential.helper=', 'ls-remote', '--', 'https://github.com/acme/addon', 'HEAD'],
+      exitCode: 1, output: 'cancelled', truncated: false, logPath: 'git.log', kind: 'unknown',
+    }
   })
   const pnpm = vi.spyOn(operations, 'runProfilePnpm')
   onTestFinished(() => { pnpm.mockRestore() })
@@ -1773,9 +1807,13 @@ it('lists absent Official entries offline without resolving their packages or co
   onTestFinished(() => { resolve.mockRestore(); registry.mockRestore() })
   const bundles = await manager.listBundles()
   for (const entry of OFFICIAL_ON_DEMAND_CATALOG) {
-    expect(bundles.filter(bundle => bundle.name === entry.packageName)).toEqual([{
+    expect(bundles.filter(bundle => bundle.name === entry.packageName)).toHaveLength(1)
+    expect(bundles.filter(bundle => bundle.name === entry.packageName)).toMatchObject([{
       name: entry.packageName, official: true, availability: 'missing', enabled: false, installed: false, optional: false,
       removable: false, updatable: false, rows: [], overrides: [], meta: entry.meta,
+      ...entry.listedByDefault === undefined ? {} : { listedByDefault: entry.listedByDefault },
+      ...entry.platforms !== undefined && !entry.platforms.includes(process.platform)
+        ? { listedByDefault: false, error: { code: 'unsupported-platform' } } : {},
       installTarget: { spec: `${entry.packageName}@${getDshRuntimeVersion()}`, version: getDshRuntimeVersion() },
     }])
     expect(resolve.mock.calls.some(([name]) => name === entry.packageName)).toBe(false)
diff --git a/packages/boot/plugin-manager/tests/operations.spec.ts b/packages/boot/plugin-manager/tests/operations.spec.ts
index c54260d214..b6a87a6475 100644
--- a/packages/boot/plugin-manager/tests/operations.spec.ts
+++ b/packages/boot/plugin-manager/tests/operations.spec.ts
@@ -874,10 +874,16 @@ it.each([
 ])('reports launch failures with a complete log: $code', async ({ code, shortMessage, expected }) => {
   const { context } = fixture()
   command.run.mockImplementationOnce(() => result(undefined, '', () => {}, { code, ...shortMessage === undefined ? {} : { shortMessage } }))
-  const outcome = await runProfilePnpm(context, ['root'], { execution: 'service', outputBytes: 4, signal: new AbortController().signal })
+  const messages: string[] = []
+  const outcome = await runProfilePnpm(context, ['root'], {
+    execution: 'service', outputBytes: 4, signal: new AbortController().signal,
+    onOutput: (text) => { messages.push(text) },
+  })
   expect(outcome.exitCode).toBe(expected)
   expect(outcome.truncated).toBe(true)
   expect(readFileSync(outcome.logPath, 'utf8')).toBe(shortMessage ?? 'pnpm failed')
+  // A run that printed nothing still streams the diagnostic its log carries.
+  expect(messages).toEqual([shortMessage ?? 'pnpm failed'])
 })
 
 it('cancels and settles package output when the output consumer fails', async () => {
diff --git a/packages/boot/plugin-market/package.json b/packages/boot/plugin-market/package.json
index 140fba1cb5..86c97b79b7 100644
--- a/packages/boot/plugin-market/package.json
+++ b/packages/boot/plugin-market/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-plugin-market",
   "description": "Configured plugin market indexes for the Web Discover page and the plugin_market agent tool",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/browser-use/browser-use/package.json b/packages/browser-use/browser-use/package.json
index cfd1264b62..5a67143621 100644
--- a/packages/browser-use/browser-use/package.json
+++ b/packages/browser-use/browser-use/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-browser-use",
   "description": "Exclusive named browser-use provider registration",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/bundle/acp-app/package.json b/packages/bundle/acp-app/package.json
index 94846a8a58..d48b0bf711 100644
--- a/packages/bundle/acp-app/package.json
+++ b/packages/bundle/acp-app/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-acp-app",
   "description": "The dsh ACP profile bundle: automation-only JSON-RPC stdio and process lifecycle over dsh-base",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/bundle/base/package.json b/packages/bundle/base/package.json
index 559c32dead..6c6e508732 100644
--- a/packages/bundle/base/package.json
+++ b/packages/bundle/base/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-base",
   "description": "The shared dsh core as a profile bundle: the first patch layer of base-backed profiles, inserting core rows over the empty profile root",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/bundle/headless/package.json b/packages/bundle/headless/package.json
index 030d3c3a87..dd523037fe 100644
--- a/packages/bundle/headless/package.json
+++ b/packages/bundle/headless/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-headless",
   "description": "The dsh one-shot bundle: a direct core Agent/Session runner over dsh-base with no Host, HTTP, or browser layer",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/bundle/sdk-app/package.json b/packages/bundle/sdk-app/package.json
index 0e543f9e13..7be81f2b9c 100644
--- a/packages/bundle/sdk-app/package.json
+++ b/packages/bundle/sdk-app/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sdk-app",
   "description": "The dsh SDK profile bundle: stdio JSON-RPC serving and process lifecycle over dsh-base",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/bundle/sdk-minimal/package.json b/packages/bundle/sdk-minimal/package.json
index 5dcbfd67a2..499aad21e4 100644
--- a/packages/bundle/sdk-minimal/package.json
+++ b/packages/bundle/sdk-minimal/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sdk-minimal",
   "description": "The standalone minimal SDK profile bundle: JSON-RPC, one DeepSeek adapter, persistent shell, and JSONL sessions",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/bundle/web-app/cordis.patch.yml b/packages/bundle/web-app/cordis.patch.yml
index c0ae7077d9..53d2b2971e 100644
--- a/packages/bundle/web-app/cordis.patch.yml
+++ b/packages/bundle/web-app/cordis.patch.yml
@@ -77,6 +77,10 @@
         iconTimeoutMs: 10000
         launchWatchMs: 1000
 
+    - id: ui-file-actions
+      name: '@deepseek-ai/dsh-client-ui-file-actions'
+    - id: ui-context-menu
+      name: '@deepseek-ai/dsh-client-ui-context-menu'
     - id: ui-open-in-app
       name: '@deepseek-ai/dsh-client-ui-open-in-app'
 
diff --git a/packages/bundle/web-app/package.json b/packages/bundle/web-app/package.json
index 864a13e1c6..9ecc295724 100644
--- a/packages/bundle/web-app/package.json
+++ b/packages/bundle/web-app/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-web-app",
   "description": "The dsh browser-surface bundle: the web patch layer over dsh-base plus the runtime glue plugin (frontend dist serving, bash runtime variables, URL line)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -191,7 +191,9 @@
     "@deepseek-ai/dsh-client-ui-settings-session-log": "workspace:*",
     "@deepseek-ai/dsh-harness-dev-context": "workspace:*",
     "@deepseek-ai/dsh-deliverable-file-references": "workspace:*",
-    "@deepseek-ai/dsh-client-ui-file-drag": "workspace:*"
+    "@deepseek-ai/dsh-client-ui-file-drag": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-file-actions": "workspace:*"
   },
   "peerDependencies": {
     "@deepseek-ai/cordis": "workspace:~",
diff --git a/packages/client/connection/package.json b/packages/client/connection/package.json
index 273fd330e9..22f21df125 100644
--- a/packages/client/connection/package.json
+++ b/packages/client/connection/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-connection",
   "description": "Authenticated RPC transport and generation lifecycle",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/file-upload/package.json b/packages/client/file-upload/package.json
index 6f658f40d9..d91c931e21 100644
--- a/packages/client/file-upload/package.json
+++ b/packages/client/file-upload/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-file-upload",
   "description": "Agent-scoped browser file upload, streaming intake, and staged receipt service",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/hmr/package.json b/packages/client/hmr/package.json
index 74387100a1..0ad8192ce6 100644
--- a/packages/client/hmr/package.json
+++ b/packages/client/hmr/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-hmr",
   "description": "Web client graph synchronization and rebuilt-bundle reload transport",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/locale/package.json b/packages/client/locale/package.json
index d3cfb395de..44227c6ebe 100644
--- a/packages/client/locale/package.json
+++ b/packages/client/locale/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-locale",
   "description": "Locale plugin: Host-backed preference, extensible language catalog, browser fallback, and typed built-in dictionaries",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/locale/tests/language-row.client.spec.tsx b/packages/client/locale/tests/language-row.client.spec.tsx
index ecf23dd6e9..d94b2a195b 100644
--- a/packages/client/locale/tests/language-row.client.spec.tsx
+++ b/packages/client/locale/tests/language-row.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
@@ -45,6 +46,7 @@ function mount(active = 'en') {
     usePanelInfo, useSessionRetainInfo: () => undefined, useResource,
     useWorkspaces: emptyWorkspaces(),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useStore: bindSnapshotSelector(store),
     actions: store.actions,
     t: (key: string) => key === 'language.title' ? 'Language' : key,
diff --git a/packages/client/modules/package.json b/packages/client/modules/package.json
index eb03e31d6c..558dc133e9 100644
--- a/packages/client/modules/package.json
+++ b/packages/client/modules/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-modules",
   "description": "Client module system, dual-face: node half composes the __DSH_BOOT__ entry graph (incremental dsh.client scan, bundle route, index tap, webPlugins service); browser half is the lazy-CJS module table the vendored cordis Loader consumes as its internal seam",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/modules/src/client/entries.ts b/packages/client/modules/src/client/entries.ts
index 587d3ffdd0..e33d0055f8 100644
--- a/packages/client/modules/src/client/entries.ts
+++ b/packages/client/modules/src/client/entries.ts
@@ -236,7 +236,8 @@ export class ClientEntries {
         } else if (entry.fiber === undefined) {
           await this.replace(entry, row.id, row.rev, generation)
         } else if (entry.fiber.state === FAILED) {
-          entry.fiber.update(entry.options.config)
+          // A retry with unchanged config is not a configuration change to persist.
+          await entry.fiber.update(entry.options.config, true)
         }
       } catch (error) {
         failures.push({ id: row.id, message: String(error) })
diff --git a/packages/client/product-analytics/package.json b/packages/client/product-analytics/package.json
index 75528b227d..9848ca3c08 100644
--- a/packages/client/product-analytics/package.json
+++ b/packages/client/product-analytics/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-product-analytics",
   "description": "Desktop product event collection and authenticated Host reporting",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/resources/package.json b/packages/client/resources/package.json
index 8cad8c3764..fd54263983 100644
--- a/packages/client/resources/package.json
+++ b/packages/client/resources/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-resources",
   "description": "Unified client resource model: protocol-registered providers turn URL addresses into live values, consumed through the useResource global standard hook",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/shortcuts/package.json b/packages/client/shortcuts/package.json
index f2c985906b..8ae1eb16a2 100644
--- a/packages/client/shortcuts/package.json
+++ b/packages/client/shortcuts/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-shortcuts",
   "description": "Application keyboard command registry and physical-key routing",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/store/package.json b/packages/client/store/package.json
index ee0fab4de1..81ce31353c 100644
--- a/packages/client/store/package.json
+++ b/packages/client/store/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-store",
   "description": "React-free observable and snapshot-store contracts with the shared Zustand/Immer engine",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-agent-preset/package.json b/packages/client/ui-agent-preset/package.json
index 1a09a46151..18982db48e 100644
--- a/packages/client/ui-agent-preset/package.json
+++ b/packages/client/ui-agent-preset/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-agent-preset",
   "description": "Agent-preset surfaces: the default for later sessions, this session's seat, and the composition editor",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-agent-preset/tests/create-plugin-menu-item.client.spec.tsx b/packages/client/ui-agent-preset/tests/create-plugin-menu-item.client.spec.tsx
index 578234c898..83ea649c80 100644
--- a/packages/client/ui-agent-preset/tests/create-plugin-menu-item.client.spec.tsx
+++ b/packages/client/ui-agent-preset/tests/create-plugin-menu-item.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { useState, type ComponentProps } from 'react'
 import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
 import { afterEach, describe, expect, it, vi } from 'vitest'
@@ -30,6 +31,7 @@ function view(roster: Partial<AgentPresetSettingsState> = {}, inMenu = false) {
     usePanelInfo: unusedHook, useSessions: unusedHook, useSessionStatus: unusedHook,
     useSessionRetainInfo: unusedHook, useWorkspaces: unusedHook, useResource: unusedHook,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     load, startCreatorDraft, onDismiss,
   }
   function TestMenu() {
diff --git a/packages/client/ui-agent-preset/tests/section.client.spec.tsx b/packages/client/ui-agent-preset/tests/section.client.spec.tsx
index 1ea42a6af1..59f2bf5842 100644
--- a/packages/client/ui-agent-preset/tests/section.client.spec.tsx
+++ b/packages/client/ui-agent-preset/tests/section.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { act, cleanup, fireEvent, render, screen, waitFor, within } from '@testing-library/react'
 import { afterEach, expect, it, vi } from 'vitest'
 import { allowAllAccess, bindSnapshotSelector } from '@deepseek-ai/dsh-client-test-runtime'
@@ -24,6 +25,7 @@ function view(partial: Partial<AgentPresetSectionState> = {}, startCreatorDraft?
     usePanelInfo: unusedHook, useSessions: unusedHook, useSessionStatus: unusedHook, useSessionRetainInfo: unusedHook,
     useWorkspaces: unusedHook, useResource: unusedHook,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useAgentPresetSection: bindSnapshotSelector(store),
     useDeveloperTools: bindSnapshotSelector(developerTools),
     t: key => translations.get(key) ?? key }
diff --git a/packages/client/ui-approval/package.json b/packages/client/ui-approval/package.json
index d402973ade..a1a6a8e7c2 100644
--- a/packages/client/ui-approval/package.json
+++ b/packages/client/ui-approval/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-approval",
   "description": "Approval composer takeover over the scoped Remote Event waterfall",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-attachment/README.i18n.yaml b/packages/client/ui-attachment/README.i18n.yaml
index 65b551434d..fe9e9182e5 100644
--- a/packages/client/ui-attachment/README.i18n.yaml
+++ b/packages/client/ui-attachment/README.i18n.yaml
@@ -15,8 +15,8 @@
   en: d152484eb41ac6b4
   zh: 09388d293f9be9cb
 /deepseek-ai-dsh-client-ui-attachment/use-this-package:
-  en: df47b6abd789dcb5
-  zh: 7e17c7f18631a572
+  en: 02870b565a595b51
+  zh: c31d02d76d78094b
 /deepseek-ai-dsh-client-ui-attachment/use-this-package/draft-attachments:
   en: 8246cb3c470e3fc5
   zh: 7028cf466a832b99
@@ -30,8 +30,8 @@
   en: 07204b7d538b7434
   zh: 705cc6b0c9387cce
 /deepseek-ai-dsh-client-ui-attachment/further-exploration:
-  en: 733ac3e4df52d6e9
-  zh: 98a6a8cac7d66645
+  en: 661e8285abb71b5d
+  zh: 0c421325537cdcda
 /deepseek-ai-dsh-client-ui-attachment/model-experience:
   en: 25566605d7b38667
   zh: 927d3ea272893296
diff --git a/packages/client/ui-attachment/README.md b/packages/client/ui-attachment/README.md
index 29e7f3aba0..7b3158b50b 100644
--- a/packages/client/ui-attachment/README.md
+++ b/packages/client/ui-attachment/README.md
@@ -25,7 +25,7 @@ This package renders everything the conversation UI shows about attachments: one
 <a id="use-this-package"></a>
 ## Use this package
 
-Image drag actions and the composer’s original-file reader arrive through slot injection from [ui-file-drag](../ui-file-drag/README.md). The image gallery Factory also receives these actions through its declared inject face; custom Factory replacements must supply that face.
+Image drag actions and the composer’s original-file reader arrive through slot injection from [ui-file-drag](../ui-file-drag/README.md). The image gallery Factory also receives these actions through its declared inject face; custom Factory replacements must supply that face. `MessageImage` and `ImageGallery` require the ordinary `getTriggerProps` factory; they bind each original image once and pass the same `contextMenuProps` to its thumbnail and lightbox.
 
 Mount this plugin alongside [`ui-conversation`](../ui-conversation/README.md) and [`ui-tool`](../ui-tool/README.md) when tool results need an image gallery. It waits for their slot declarations and registers its components into them. Users then see the mixed draft-attachment rail, DeepSeek Web file cards with upload controls, the drop overlay with its limits line, message images sized by count, the tool card's gallery, and the Escape/mask/close lightbox.
 
@@ -82,6 +82,8 @@ Read these pages when the attachment surface is not enough. They move from the s
 
 -----
 
+Message images and original previews forward context gestures through the shared gallery to [ui-context-menu](../ui-context-menu/README.md). Original authorized URLs and MIME metadata remain independent from thumbnail presentation.
+
 <a id="model-experience"></a>
 ## Model Experience
 
diff --git a/packages/client/ui-attachment/README.zh.md b/packages/client/ui-attachment/README.zh.md
index 80db6ae928..7391553fe2 100644
--- a/packages/client/ui-attachment/README.zh.md
+++ b/packages/client/ui-attachment/README.zh.md
@@ -25,7 +25,7 @@ kind: "package-reference"
 <a id="use-this-package"></a>
 ## 使用本包
 
-图片拖放回调与输入框的原图读取回调通过 slot 注入从 [ui-file-drag](../ui-file-drag/README.zh.md) 获取。图片图库 Factory 也通过声明的注入接口接收回调；自定义 Factory 替换实现必须提供该接口。
+图片拖放回调与输入框的原图读取回调通过 slot 注入从 [ui-file-drag](../ui-file-drag/README.zh.md) 获取。图片图库 Factory 也通过声明的注入接口接收回调；自定义 Factory 替换实现必须提供该接口。 `MessageImage` 和 `ImageGallery` 必须接收普通 `getTriggerProps` 函数，每张原图绑定一次，将同一份 `contextMenuProps` 传给缩略图和灯箱。
 
 与 [`ui-conversation`](../ui-conversation/README.zh.md) 一起挂载本插件，工具结果需要图片图库时也要挂载 [`ui-tool`](../ui-tool/README.zh.md)。插件等待这些 slot 的声明，并把组件注册进去。用户会看到混合草稿附件栏、带上传控件的 DeepSeek Web 文件卡、带限制说明的拖放遮罩、按数量定尺寸的消息图片、工具卡片图库，以及支持 Escape、遮罩和关闭按钮的灯箱。
 
@@ -82,6 +82,8 @@ Trajectory 附件行使用 48px 方形缩略图，完整缩放图片而不裁剪
 
 -----
 
+消息图片和原图预览通过共享图片库将右键手势转发给 [ui-context-menu](../ui-context-menu/README.zh.md)。原始授权 URL 与 MIME 元数据独立于缩略图展示。
+
 <a id="model-experience"></a>
 ## 模型体验
 
diff --git a/packages/client/ui-attachment/package.json b/packages/client/ui-attachment/package.json
index 6456641085..2f5d2d5d93 100644
--- a/packages/client/ui-attachment/package.json
+++ b/packages/client/ui-attachment/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-attachment",
   "description": "Dynamic attachment presentation plugin for conversation input, message-image, and trajectory image slots",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -35,7 +35,8 @@
         "@deepseek-ai/dsh-client-ui-renderer",
         "@deepseek-ai/dsh-client-ui-trajectory",
         "@deepseek-ai/dsh-client-ui-tool",
-        "@deepseek-ai/dsh-client-ui-file-drag"
+        "@deepseek-ai/dsh-client-ui-file-drag",
+        "@deepseek-ai/dsh-client-ui-context-menu"
       ],
       "platform": "web"
     }
@@ -60,7 +61,8 @@
     "@deepseek-ai/dsh-client-ui-tool": "workspace:*",
     "clsx": "^2.0.0",
     "@deepseek-ai/dsh-client-ui-file-drag": "workspace:*",
-    "@deepseek-ai/dsh-util-file-drag": "workspace:*"
+    "@deepseek-ai/dsh-util-file-drag": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "files": [
     "locale/*.json",
diff --git a/packages/client/ui-attachment/src/MessageImage.tsx b/packages/client/ui-attachment/src/MessageImage.tsx
index 5adcfb69a3..7afdb8b245 100644
--- a/packages/client/ui-attachment/src/MessageImage.tsx
+++ b/packages/client/ui-attachment/src/MessageImage.tsx
@@ -1,3 +1,4 @@
+import type { ContextMenuBindings } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { useCallback, useEffect, useMemo, useState } from 'react'
 import type { ImageAttachmentRef } from '@deepseek-ai/dsh-attachment'
 import { IconLoadingOutlineRegular, IconRefreshOutlineRegular, DraggableImage, ImageLightbox, type FileDragActions } from '@deepseek-ai/dsh-client-ui-primitives'
@@ -67,12 +68,13 @@ function dimensionsOf(image: MessageImageSpec): { readonly width: number; readon
  * @param props.labels - resolved strings (tooltip, loading, retry, lightbox).
  * @returns the bounded thumbnail button, or the retry control on failure.
  */
-export function MessageImage({ image, load, variant, labels, fileDrag }: {
+export function MessageImage({ image, load, variant, labels, fileDrag, getTriggerProps }: {
   image: MessageImageSpec
   load: ImageLoader
   variant: 'single' | 'tile' | 'thumbnail'
   fileDrag: FileDragActions
   labels: MessageImageLabels
+  getTriggerProps: ContextMenuBindings['getTriggerProps']
 }) {
   const preview = 'preview' in image ? image.preview : undefined
   const attachment = 'attachment' in image ? image.attachment : undefined
@@ -110,6 +112,9 @@ export function MessageImage({ image, load, variant, labels, fileDrag }: {
   const src = preview?.url ?? loaded
   const label = ('attachment' in image ? image.label : undefined)
     ?? preview?.name ?? attachment?.name ?? labels.image
+  const contextMenuProps = getTriggerProps(src === null ? undefined : { kind: 'image', value: {
+    url: src, name: label, ...(attachment === undefined ? {} : { mediaType: attachment.mediaType }),
+  } })
   const loadingThumbnail = variant === 'thumbnail' && src === null
   if (error) return (
     <button
@@ -135,6 +140,7 @@ export function MessageImage({ image, load, variant, labels, fileDrag }: {
         title={loadingThumbnail ? labels.loading : labels.open}
         aria-label={loadingThumbnail ? labels.loading : labels.openNamed(label)}
         aria-busy={loadingThumbnail || undefined}
+        {...contextMenuProps}
         onClick={() => { if (src !== null) setOpen(true) }}
       >
         {src === null
@@ -146,14 +152,15 @@ export function MessageImage({ image, load, variant, labels, fileDrag }: {
           : <DraggableImage fileDrag={fileDrag} src={src} alt={label} name={preview?.name ?? attachment?.name ?? 'image'}
             style={fit === undefined ? undefined : { objectPosition: fit.objectPosition }} />}
       </button>
-      {open && src !== null && <ImageLightbox src={src} alt={label} labels={labels.lightbox} onClose={close} />}
+      {open && src !== null && <ImageLightbox src={src} alt={label} labels={labels.lightbox} onClose={close}
+        contextMenuProps={contextMenuProps} />}
     </>
   )
 }
 
 /** Wrapping image group shared by user and assistant history: a lone image
  * renders large unless its owner requests compact tiles or contained list thumbnails. */
-export function ImageGallery({ images, load, align, compact = false, thumbnail = false, labels, fileDrag }: {
+export function ImageGallery({ images, load, align, compact = false, thumbnail = false, labels, fileDrag, getTriggerProps }: {
   images: readonly MessageImageSpec[]
   load: ImageLoader
   align: 'start' | 'end'
@@ -161,6 +168,7 @@ export function ImageGallery({ images, load, align, compact = false, thumbnail =
   thumbnail?: boolean
   fileDrag: FileDragActions
   labels: MessageImageLabels
+  getTriggerProps: ContextMenuBindings['getTriggerProps']
 }) {
   if (images.length === 0) return null
   const variant = thumbnail ? 'thumbnail' : compact || images.length > 1 ? 'tile' : 'single'
@@ -174,6 +182,7 @@ export function ImageGallery({ images, load, align, compact = false, thumbnail =
           variant={variant}
           fileDrag={fileDrag}
           labels={labels}
+          getTriggerProps={getTriggerProps}
         />
       ))}
     </div>
diff --git a/packages/client/ui-attachment/src/client/MessageImages.tsx b/packages/client/ui-attachment/src/client/MessageImages.tsx
index 0a95ddc66d..176940777f 100644
--- a/packages/client/ui-attachment/src/client/MessageImages.tsx
+++ b/packages/client/ui-attachment/src/client/MessageImages.tsx
@@ -12,11 +12,12 @@ type MessageImagesProps = MessageImagesOwnerProps & PropsRenderFactories
  * @param props - image sources, authorized loader, layout hints, optional labels, and Factory locale seat.
  * @returns the official gallery; no Session binding is needed by this component.
  */
-export function MessageImagesContent({ images, loadImage, align, compact = false, thumbnail = false, labels, t, fileDrag }:
+export function MessageImagesContent({ images, loadImage, align, compact = false, thumbnail = false, labels, t, fileDrag, useContextMenu }:
 FactoryComponentPropsOf<'conversation.images.content'>) {
+  const { getTriggerProps } = useContextMenu()
   const resolved = useMemo(() => labels ?? messageImageLabels(t), [labels, t])
   return <ImageGallery images={images} load={loadImage} align={align}
-    compact={compact} thumbnail={thumbnail} labels={resolved} fileDrag={fileDrag} />
+    compact={compact} thumbnail={thumbnail} labels={resolved} fileDrag={fileDrag} getTriggerProps={getTriggerProps} />
 }
 
 /**
diff --git a/packages/client/ui-attachment/src/client/index.ts b/packages/client/ui-attachment/src/client/index.ts
index 7ef44e1dd8..ef0f496a78 100644
--- a/packages/client/ui-attachment/src/client/index.ts
+++ b/packages/client/ui-attachment/src/client/index.ts
@@ -1,5 +1,7 @@
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /** Browser attachment plugin: composer entries and independently replaceable image galleries. */
 import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import type { SlotFactoryMap } from '@deepseek-ai/dsh-client-ui-slots'
 import type {} from '@deepseek-ai/dsh-client-ui-chat/client'
 import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
 import type {} from '@deepseek-ai/dsh-client-ui-renderer/client'
@@ -9,6 +11,8 @@ import type {} from '@deepseek-ai/dsh-client-ui-file-drag/client'
 import { ComposerAttachments, type ComposerAttachmentsInjected } from './ComposerAttachments.tsx'
 import { MessageImages, MessageImagesContent } from './MessageImages.tsx'
 
+type MessageImagesInjected = SlotFactoryMap['conversation.images.content']['inject']
+
 /** Slot registry required by the attachment presentation plugin. */
 export const inject = ['slots', 'fileDrag']
 
@@ -19,7 +23,9 @@ export const inject = ['slots', 'fileDrag']
 export function apply(ctx: ClientContext): void {
   ctx.slots.registerFactory({
     name: 'conversation.images.content', scope: 'root', locale: 'conversation',
-    inject: () => ({ fileDrag: ctx.fileDrag.actions }),
+    inject: (): MessageImagesInjected => ({
+      fileDrag: ctx.fileDrag.actions,
+    }),
   }, MessageImagesContent)
   ctx.slots.inject('conversation.input.attachments', () => ctx.slots.register({
     name: 'conversation.input.attachments',
diff --git a/packages/client/ui-attachment/tests/image-slot-isolation.client.spec.tsx b/packages/client/ui-attachment/tests/image-slot-isolation.client.spec.tsx
index 09f0db62cb..98f3d923a3 100644
--- a/packages/client/ui-attachment/tests/image-slot-isolation.client.spec.tsx
+++ b/packages/client/ui-attachment/tests/image-slot-isolation.client.spec.tsx
@@ -1,6 +1,7 @@
 // @vitest-environment jsdom
 /** Independent domain image positions with one shared official gallery Factory. */
 import * as fileDragPlugin from '@deepseek-ai/dsh-client-ui-file-drag/client'
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { act, cleanup, within } from '@testing-library/react'
 import { afterEach, describe, expect, it, onTestFinished, vi } from 'vitest'
 import { AttachmentId } from '@deepseek-ai/dsh-attachment'
@@ -29,6 +30,10 @@ async function bench() {
   runtime.slots.installLocale(locale)
   new UiConversation(runtime.ctx, runtime.sessions)
   await runtime.mount(fileDragPlugin)
+  runtime.ctx.provide('contextMenus', { open: vi.fn() } as never)
+  runtime.slots.provideRoot({ props: {
+    useContextMenu: contextMenuHook((target, point) => { runtime.ctx.contextMenus.open(target, point) }),
+  } })
   await runtime.mount(attachmentPlugin)
   await runtime.sessions.add({ id: 'image-domains' })
   const session = runtime.sessions.retainFor(runtime.ctx, SessionId('image-domains'))
diff --git a/packages/client/ui-attachment/tests/message-image.client.spec.tsx b/packages/client/ui-attachment/tests/message-image.client.spec.tsx
index dd6588f8bf..68cf23a7c8 100644
--- a/packages/client/ui-attachment/tests/message-image.client.spec.tsx
+++ b/packages/client/ui-attachment/tests/message-image.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 
 import { useState } from 'react'
 import type { PropsRenderFactories, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
@@ -39,7 +40,8 @@ describe('MessageImage', () => {
     const load = Object.assign(vi.fn(() => new Promise<string>(() => {})), {
       peek: vi.fn(() => 'blob:seeded'),
     })
-    const view = render(<MessageImage fileDrag={fileDrag} image={{ attachment }} load={load} variant="single" labels={labels} />)
+    const view = render(<MessageImage
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment }} load={load} variant="single" labels={labels} />)
     expect(view.queryByText('图片加载中…')).toBeNull()
     expect((view.getByAltText('history.png') as HTMLImageElement).src).toContain('blob:seeded')
     expect(load).toHaveBeenCalledWith(attachment)
@@ -47,7 +49,8 @@ describe('MessageImage', () => {
 
   it('loads a Gateway-authorized URL, bounds the thumbnail, and clicks into the original', async () => {
     const load = vi.fn().mockResolvedValue('blob:history')
-    const view = render(<MessageImage fileDrag={fileDrag} image={{ attachment }} load={load} variant="single" labels={labels} />)
+    const view = render(<MessageImage
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment }} load={load} variant="single" labels={labels} />)
     const frame = view.getByRole('button', { name: 'history.png，点击查看原图' })
     expect(frame.getAttribute('style')).toContain('width: 240px')
     expect(frame.getAttribute('style')).toContain('height: 120px')
@@ -62,7 +65,8 @@ describe('MessageImage', () => {
 
   it('ignores a click while the thumbnail is still loading', () => {
     const load = vi.fn(() => new Promise<string>(() => {}))
-    const view = render(<MessageImage fileDrag={fileDrag} image={{ attachment }} load={load} variant="single" labels={labels} />)
+    const view = render(<MessageImage
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment }} load={load} variant="single" labels={labels} />)
     const frame = view.getByRole('button', { name: 'history.png，点击查看原图' })
     expect(view.getByText('图片加载中…')).toBeTruthy()
     fireEvent.click(frame)
@@ -72,7 +76,8 @@ describe('MessageImage', () => {
   it('falls back to the image label for an unnamed attachment', async () => {
     const { name: _named, ...unnamed } = attachment
     const load = vi.fn().mockResolvedValue('blob:unnamed')
-    const view = render(<MessageImage fileDrag={fileDrag} image={{ attachment: unnamed }} load={load} variant="single" labels={labels} />)
+    const view = render(<MessageImage
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment: unnamed }} load={load} variant="single" labels={labels} />)
     await waitFor(() => { expect(view.getByAltText('图片')).toBeTruthy() })
     expect(view.getByRole('button', { name: '图片，点击查看原图' })).toBeTruthy()
   })
@@ -82,7 +87,8 @@ describe('MessageImage', () => {
       .mockRejectedValueOnce(new Error('offline'))
       .mockRejectedValueOnce(new Error('still offline'))
       .mockResolvedValueOnce('blob:retry')
-    const view = render(<MessageImage fileDrag={fileDrag} image={{ attachment }} load={load} variant="single" labels={labels} />)
+    const view = render(<MessageImage
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment }} load={load} variant="single" labels={labels} />)
     const retry = await view.findByRole('button', { name: '图片加载失败，点击重试' })
     fireEvent.click(retry)
     const retryAgain = await view.findByRole('button', { name: '图片加载失败，点击重试' })
@@ -94,7 +100,8 @@ describe('MessageImage', () => {
   it('clamps extreme aspect ratios and anchors the crop toward the informative edge', async () => {
     const load = vi.fn().mockResolvedValue('blob:ratio')
     const tall = render(
-      <MessageImage fileDrag={fileDrag} image={{ attachment: { ...attachment, width: 100, height: 2000 } }} load={load} variant="single" labels={labels} />,
+      <MessageImage
+        getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment: { ...attachment, width: 100, height: 2000 } }} load={load} variant="single" labels={labels} />,
     )
     const tallFrame = tall.getByRole('button', { name: 'history.png，点击查看原图' })
     expect(tallFrame.getAttribute('style')).toContain('width: 60px')
@@ -103,7 +110,8 @@ describe('MessageImage', () => {
     expect(tall.getByAltText('history.png').style.objectPosition).toBe('center top')
     tall.unmount()
     const wide = render(
-      <MessageImage fileDrag={fileDrag} image={{ attachment: { ...attachment, width: 4000, height: 100 } }} load={load} variant="single" labels={labels} />,
+      <MessageImage
+        getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment: { ...attachment, width: 4000, height: 100 } }} load={load} variant="single" labels={labels} />,
     )
     const wideFrame = wide.getByRole('button', { name: 'history.png，点击查看原图' })
     expect(wideFrame.getAttribute('style')).toContain('width: 240px')
@@ -112,7 +120,8 @@ describe('MessageImage', () => {
     expect(wide.getByAltText('history.png').style.objectPosition).toBe('left center')
     wide.unmount()
     const small = render(
-      <MessageImage fileDrag={fileDrag} image={{ attachment: { ...attachment, width: 100, height: 100 } }} load={load} variant="single" labels={labels} />,
+      <MessageImage
+        getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment: { ...attachment, width: 100, height: 100 } }} load={load} variant="single" labels={labels} />,
     )
     const smallFrame = small.getByRole('button', { name: 'history.png，点击查看原图' })
     expect(smallFrame.getAttribute('style')).toContain('width: 100px')
@@ -121,7 +130,8 @@ describe('MessageImage', () => {
 
   it('renders a tile at the fixed square without inline sizing', () => {
     const load = vi.fn(() => new Promise<string>(() => {}))
-    const view = render(<MessageImage fileDrag={fileDrag} image={{ attachment }} load={load} variant="tile" labels={labels} />)
+    const view = render(<MessageImage
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment }} load={load} variant="tile" labels={labels} />)
     const frame = view.getByRole('button', { name: 'history.png，点击查看原图' })
     expect(frame.getAttribute('data-variant')).toBe('tile')
     expect(frame.getAttribute('style')).toBeNull()
@@ -129,7 +139,9 @@ describe('MessageImage', () => {
 
   it.each(['tile', 'thumbnail'] as const)('keeps the %s variant on the failed-load retry control', async (variant) => {
     const load = vi.fn().mockRejectedValue(new Error('offline'))
-    const view = render(<MessageImage fileDrag={fileDrag} image={{ attachment }} load={load} variant={variant} labels={labels} />)
+    const view = render(<MessageImage
+      getTriggerProps={contextMenuHook()().getTriggerProps}
+      fileDrag={fileDrag} image={{ attachment }} load={load} variant={variant} labels={labels} />)
     const retry = await view.findByRole('button', { name: '图片加载失败，点击重试' })
     expect(retry.getAttribute('data-variant')).toBe(variant)
   })
@@ -140,7 +152,8 @@ describe('MessageImage', () => {
   ] as const)('labels thumbnail status icons and retries a failed read in %s', async (_locale, statusLabels) => {
     const pending = Promise.withResolvers<string>()
     const load = vi.fn().mockReturnValueOnce(pending.promise).mockResolvedValue('blob:retry')
-    const view = render(<MessageImage fileDrag={fileDrag} image={{ attachment }} load={load} variant="thumbnail" labels={statusLabels} />)
+    const view = render(<MessageImage
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment }} load={load} variant="thumbnail" labels={statusLabels} />)
     const loading = view.getByRole('button', { name: statusLabels.loading })
     expect(loading.getAttribute('title')).toBe(statusLabels.loading)
     expect(loading.getAttribute('aria-busy')).toBe('true')
@@ -164,7 +177,8 @@ describe('MessageImage', () => {
   it('uses the owner display name for an unnamed thumbnail and its original-image viewer', async () => {
     const { name: _name, ...unnamed } = attachment
     const load = vi.fn().mockRejectedValueOnce(new Error('offline')).mockResolvedValue('blob:thumbnail')
-    const view = render(<ImageGallery fileDrag={fileDrag} images={[{ attachment: unnamed, label: 'Image 2' }]} load={load} align="start" thumbnail labels={labels} />)
+    const view = render(<ImageGallery
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} images={[{ attachment: unnamed, label: 'Image 2' }]} load={load} align="start" thumbnail labels={labels} />)
     fireEvent.click(await view.findByRole('button', { name: labels.loadFailed }))
     const image = await view.findByAltText('Image 2')
     expect(image.closest('button')?.getAttribute('data-variant')).toBe('thumbnail')
@@ -182,13 +196,15 @@ describe('MessageImage', () => {
   it('ignores a load settling after unmount', async () => {
     let resolve: ((url: string) => void) | undefined
     const load = vi.fn(() => new Promise<string>((r) => { resolve = r }))
-    const view = render(<MessageImage fileDrag={fileDrag} image={{ attachment }} load={load} variant="single" labels={labels} />)
+    const view = render(<MessageImage
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment }} load={load} variant="single" labels={labels} />)
     view.unmount()
     resolve?.('blob:late')
     await Promise.resolve()
     let reject: ((error: Error) => void) | undefined
     const failing = vi.fn(() => new Promise<string>((_r, rej) => { reject = rej }))
-    const second = render(<MessageImage fileDrag={fileDrag} image={{ attachment }} load={failing} variant="single" labels={labels} />)
+    const second = render(<MessageImage
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ attachment }} load={failing} variant="single" labels={labels} />)
     second.unmount()
     reject?.(new Error('late failure'))
     await Promise.resolve()
@@ -199,7 +215,7 @@ describe('MessageImage preview arm', () => {
   it('displays a local preview immediately, without the loader, sized by its probed dimensions', () => {
     const load = vi.fn()
     const view = render(
-      <MessageImage fileDrag={fileDrag}
+      <MessageImage getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag}
         image={{ preview: { url: 'blob:echo', name: 'echo.png', width: 640, height: 320 } }}
         load={load}
         variant="single"
@@ -217,7 +233,8 @@ describe('MessageImage preview arm', () => {
   it('sizes an unprobed lone preview as a square crop and falls back to the image label', () => {
     const load = vi.fn()
     const view = render(
-      <MessageImage fileDrag={fileDrag} image={{ preview: { url: 'blob:unprobed' } }} load={load} variant="single" labels={labels} />,
+      <MessageImage
+        getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ preview: { url: 'blob:unprobed' } }} load={load} variant="single" labels={labels} />,
     )
     const img = view.getByAltText('图片') as HTMLImageElement
     const frame = img.closest('button') as HTMLButtonElement
@@ -227,7 +244,8 @@ describe('MessageImage preview arm', () => {
 
   it('opens the lightbox from a preview thumbnail', () => {
     const view = render(
-      <MessageImage fileDrag={fileDrag} image={{ preview: { url: 'blob:box' } }} load={vi.fn(async () => '')} variant="tile" labels={labels} />,
+      <MessageImage
+        getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} image={{ preview: { url: 'blob:box' } }} load={vi.fn(async () => '')} variant="tile" labels={labels} />,
     )
     fireEvent.click(view.getByRole('button', { name: '图片，点击查看原图' }))
     expect(view.getByRole('dialog', { name: '原图预览' })).toBeTruthy()
@@ -237,10 +255,11 @@ describe('MessageImage preview arm', () => {
 describe('ImageGallery', () => {
   it('renders nothing without images and an aligned wrapping group with them', async () => {
     const load = vi.fn().mockResolvedValue('blob:gallery')
-    const empty = render(<ImageGallery fileDrag={fileDrag} images={[]} load={load} align="start" labels={labels} />)
+    const empty = render(<ImageGallery
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} images={[]} load={load} align="start" labels={labels} />)
     expect(empty.container.firstChild).toBeNull()
     const view = render(
-      <ImageGallery fileDrag={fileDrag}
+      <ImageGallery getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag}
         images={[{ attachment }, { preview: { url: 'blob:echo', name: 'echo.png' } }, { attachment }]}
         load={load}
         align="end"
@@ -254,16 +273,19 @@ describe('ImageGallery', () => {
 
   it('renders a lone image large and compact or grouped images as square tiles', () => {
     const load = vi.fn(() => new Promise<string>(() => {}))
-    const lone = render(<ImageGallery fileDrag={fileDrag} images={[{ attachment }]} load={load} align="start" labels={labels} />)
+    const lone = render(<ImageGallery
+      getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} images={[{ attachment }]} load={load} align="start" labels={labels} />)
     expect(lone.container.querySelectorAll('[data-variant="single"]')).toHaveLength(1)
     lone.unmount()
     const compact = render(
-      <ImageGallery fileDrag={fileDrag} images={[{ attachment }]} load={load} align="end" compact labels={labels} />,
+      <ImageGallery
+        getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} images={[{ attachment }]} load={load} align="end" compact labels={labels} />,
     )
     expect(compact.container.querySelectorAll('[data-variant="tile"]')).toHaveLength(1)
     compact.unmount()
     const several = render(
-      <ImageGallery fileDrag={fileDrag} images={[{ attachment }, { attachment }, { attachment }]} load={load} align="end" labels={labels} />,
+      <ImageGallery
+        getTriggerProps={contextMenuHook()().getTriggerProps} fileDrag={fileDrag} images={[{ attachment }, { attachment }, { attachment }]} load={load} align="end" labels={labels} />,
     )
     expect(several.container.querySelectorAll('[data-variant="tile"]')).toHaveLength(3)
   })
@@ -277,6 +299,10 @@ describe('ImageGallery', () => {
     runtime.ctx.provide('locale', locale)
     runtime.slots.installLocale(locale)
     runtime.ctx.provide('fileDrag', { actions: fileDrag, read: () => undefined })
+    runtime.ctx.provide('contextMenus', { open: vi.fn() } as never)
+    runtime.slots.provideRoot({ props: {
+      useContextMenu: contextMenuHook((target, point) => { runtime.ctx.contextMenus.open(target, point) }),
+    } })
     await runtime.mount(attachmentPlugin)
     const images = [{ preview: { url: 'blob:labels', name: 'preview.png' } }]
     const loadImage = vi.fn(async () => 'blob:unused')
@@ -291,10 +317,14 @@ describe('ImageGallery', () => {
     })
     const view = runtime.renderRoot()
     const image = view.getByAltText('preview.png')
+    fireEvent.contextMenu(image, { clientX: 7, clientY: 8 })
+    expect(vi.spyOn(runtime.ctx.contextMenus, 'open')).toHaveBeenCalledWith({ kind: 'image', value: { url: 'blob:labels', name: 'preview.png' } }, { x: 7, y: 8 })
     const frame = view.getByRole('button', { name: 'preview.png，点击查看原图' })
     expect(frame.getAttribute('title')).toBe(labels.open)
     fireEvent.click(frame)
     expect(view.getByRole('dialog', { name: labels.lightbox.dialog })).toBeTruthy()
+    fireEvent.contextMenu(view.getByRole('dialog').querySelector('img')!, { clientX: 13, clientY: 14 })
+    expect(vi.spyOn(runtime.ctx.contextMenus, 'open')).toHaveBeenLastCalledWith({ kind: 'image', value: { url: 'blob:labels', name: 'preview.png' } }, { x: 13, y: 14 })
     fireEvent.click(view.getByRole('button', { name: labels.lightbox.close }))
     fireEvent.click(view.getByRole('button', { name: 'Default labels' }))
     const defaultFrame = view.getByRole('button', { name: 'preview.png, click to view original' })
@@ -318,6 +348,10 @@ describe('ImageGallery', () => {
     runtime.slots.installLocale(locale)
     await runtime.declare({ 'conversation.chat.message.images': { kind: 'single', scope: 'session' } })
     runtime.ctx.provide('fileDrag', { actions: fileDrag, read: () => undefined })
+    runtime.ctx.provide('contextMenus', { open: vi.fn() } as never)
+    runtime.slots.provideRoot({ props: {
+      useContextMenu: contextMenuHook((target, point) => { runtime.ctx.contextMenus.open(target, point) }),
+    } })
     await runtime.mount(attachmentPlugin)
     await runtime.sessions.add({ id: 'message-images-test' })
     const session = runtime.sessions.retainFor(runtime.ctx, SessionId('message-images-test'))
@@ -330,6 +364,8 @@ describe('ImageGallery', () => {
     expect(view.getByRole('button', { name: 'history.png，点击查看原图' })).toBeTruthy()
     expect(container.querySelector('[data-align="end"]')).not.toBeNull()
     expect(loadImage).toHaveBeenCalledWith(attachment)
+    fireEvent.contextMenu(view.getByAltText('history.png'), { clientX: 9, clientY: 10 })
+    expect(vi.spyOn(runtime.ctx.contextMenus, 'open')).toHaveBeenCalledWith({ kind: 'image', value: { url: 'blob:slot-image', name: 'history.png', mediaType: 'image/png' } }, { x: 9, y: 10 })
     expect(view.getByRole('button', { name: 'history.png，点击查看原图' }).getAttribute('data-variant')).toBe('single')
     for (const [compact, thumbnail, variant] of [
       [true, false, 'tile'],
@@ -346,3 +382,16 @@ describe('ImageGallery', () => {
 })
 
 const fileDrag = { prepare: vi.fn(async () => ({ start: () => true, release: () => {} })), reportFailure: vi.fn() }
+
+it('opens image menus from the thumbnail and lightbox using the original source', async () => {
+  const openImageMenu = vi.fn()
+  const view = render(<MessageImage
+    getTriggerProps={contextMenuHook(openImageMenu)().getTriggerProps} fileDrag={fileDrag} image={{ attachment }} load={vi.fn(async () => 'blob:original')}
+    variant="single" labels={labels} />)
+  const image = await view.findByAltText('history.png')
+  fireEvent.contextMenu(image, { clientX: 18, clientY: 29 })
+  expect(openImageMenu).toHaveBeenLastCalledWith({ kind: 'image', value: { url: 'blob:original', name: 'history.png', mediaType: attachment.mediaType } }, { x: 18, y: 29 })
+  fireEvent.click(image)
+  fireEvent.contextMenu(view.getByRole('dialog').querySelector('img')!, { clientX: 31, clientY: 42 })
+  expect(openImageMenu).toHaveBeenLastCalledWith({ kind: 'image', value: { url: 'blob:original', name: 'history.png', mediaType: attachment.mediaType } }, { x: 31, y: 42 })
+})
diff --git a/packages/client/ui-attachment/tests/plugin.client.spec.ts b/packages/client/ui-attachment/tests/plugin.client.spec.ts
index a14099543e..706dc4531b 100644
--- a/packages/client/ui-attachment/tests/plugin.client.spec.ts
+++ b/packages/client/ui-attachment/tests/plugin.client.spec.ts
@@ -21,6 +21,7 @@ async function bench() {
     await ctx.fiber.dispose()
   })
   ctx.provide('sessions', sessions)
+  ctx.provide('contextMenus', { open: vi.fn() } as never)
   ctx.provide('locale', new LocaleRuntime(ctx))
   await ctx.plugin(SlotRegistry).await()
   ctx.slots.register({
@@ -33,11 +34,13 @@ async function bench() {
       'tool.call.images': { kind: 'single', scope: 'session' },
     },
   } as never, () => null)
-  ctx.provide('fileDrag', { actions: fileDrag, read: () => undefined })
+  const readFileDrag = vi.fn(() => undefined)
+  ctx.provide('fileDrag', { actions: fileDrag, read: readFileDrag })
+  const register = vi.spyOn(ctx.slots, 'register')
   const registerFactory = vi.spyOn(ctx.slots, 'registerFactory')
   const fiber = ctx.plugin({ inject: [...inject], apply })
   await fiber.await()
-  return { ctx, fiber, registerFactory }
+  return { ctx, fiber, register, registerFactory, readFileDrag }
 }
 
 describe('attachment plugin', () => {
@@ -46,7 +49,7 @@ describe('attachment plugin', () => {
   })
 
   it('registers all entries and removes them with the plugin fiber', async () => {
-    const { ctx, fiber, registerFactory } = await bench()
+    const { ctx, fiber, register, registerFactory, readFileDrag } = await bench()
     expect(inject).toEqual(['slots', 'fileDrag'])
     expect(registerFactory.mock.calls[0]?.[0]).toMatchObject({
       name: 'conversation.images.content', scope: 'root', locale: 'conversation',
@@ -57,6 +60,10 @@ describe('attachment plugin', () => {
     expect(ctx.slots.entries('conversation.input.attachments')).toMatchObject([{
       locale: 'conversation', component: ComposerAttachments,
     }])
+    const composer = register.mock.calls.find(([options]) => options.name === 'conversation.input.attachments')!
+    const injectComposer = composer[0].inject as () => { readFileDrag: () => undefined }
+    injectComposer().readFileDrag()
+    expect(readFileDrag).toHaveBeenCalledOnce()
     for (const name of IMAGE_SLOTS) {
       expect(ctx.slots.entries(name)).toMatchObject([{ component: MessageImages, options: { priority: 100 } }])
     }
diff --git a/packages/client/ui-attachment/tsconfig.json b/packages/client/ui-attachment/tsconfig.json
index 6d6e4792bc..853d6a70e2 100644
--- a/packages/client/ui-attachment/tsconfig.json
+++ b/packages/client/ui-attachment/tsconfig.json
@@ -43,6 +43,9 @@
     },
     {
       "path": "../../util/file-drag"
+    },
+    {
+      "path": "../ui-context-menu"
     }
   ]
 }
diff --git a/packages/client/ui-brand-official/package.json b/packages/client/ui-brand-official/package.json
index 37cc217937..468dd1613d 100644
--- a/packages/client/ui-brand-official/package.json
+++ b/packages/client/ui-brand-official/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-brand-official",
   "description": "Official DeepSeek Harness brand occupants for the Web client's sidebar slots",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-chat/README.i18n.yaml b/packages/client/ui-chat/README.i18n.yaml
index 9626662137..ea9a48c09a 100644
--- a/packages/client/ui-chat/README.i18n.yaml
+++ b/packages/client/ui-chat/README.i18n.yaml
@@ -15,14 +15,14 @@
   en: 41cd21266011d571
   zh: 3172d1a2acbb27b7
 /deepseek-ai-dsh-client-ui-chat/reference-previews:
-  en: a05d85ff4949b526
-  zh: 7261ffc98665e9e7
+  en: 9386791a9e5efa00
+  zh: 7cb9f3bbc42319d6
 /deepseek-ai-dsh-client-ui-chat/hidden-chat-rows:
   en: cbf1f0a2205046a5
   zh: 2e59d0815351349f
 /deepseek-ai-dsh-client-ui-chat/command-and-failure-rows:
-  en: 41dcd70e14ebe9cc
-  zh: ededead572b59037
+  en: be90c24392fb021b
+  zh: 992b8745b385f9ab
 /deepseek-ai-dsh-client-ui-chat/turn-token-usage:
   en: cfdfe3d99d3f4e09
   zh: 9330bad3d3f7a689
@@ -36,8 +36,8 @@
   en: 3afad0b4c6bf9ce0
   zh: d8179ba4ee9fcd61
 /deepseek-ai-dsh-client-ui-chat/scroll-ownership:
-  en: 91e1f5f12ca51211
-  zh: b92090966d58b82c
+  en: dd4e69828096c3a0
+  zh: 2a9bc370f44efcd7
 /deepseek-ai-dsh-client-ui-chat/model-experience:
   en: c17b4dd43a61c569
   zh: f7414309810c3a08
diff --git a/packages/client/ui-chat/README.md b/packages/client/ui-chat/README.md
index deff6574cd..99b01c5566 100644
--- a/packages/client/ui-chat/README.md
+++ b/packages/client/ui-chat/README.md
@@ -37,13 +37,15 @@ Image drag actions arrive through the image entry’s inject face from [ui-file-
 
 Sent generic-file attachments retain the draft's [file-card radius](../../../docs/ui-radius.md#radius-scale).
 
-`ChatView` supplies file and HTTP(S) navigation through the existing `MarkdownDelegateProvider` around its node list, passing `requestOpenFile`, `openExternalLink`, and `fileImages` directly. Its file opener retains Chat's failure feedback and retry handling. Assistant Markdown file links open in the right Sidebar after the message settles, including references to unmodified files. Relative paths resolve in the viewed Session's workspace; absolute paths retain the same Session's filesystem access. `#L24` and `#L24-L30` navigate to the first specified line and reuse an existing file tab. Missing files show the preview's error state.
+`ChatView` supplies file and HTTP(S) navigation through the existing `MarkdownDelegateProvider` around its node list, passing `requestOpenFile`, `openExternalLink`, and `fileImages` directly. Its file opener retains Chat's failure feedback and retry handling. Assistant Markdown file links open in the right Sidebar after the message settles, including references to unmodified files. Relative paths resolve in the viewed Session's workspace; absolute paths retain the same Session's filesystem access. [Supported Markdown line references](../ui-primitives/README.md#rendering-agent-output) navigate to the first specified line and reuse an existing file tab. Missing files show the preview's error state.
 
 Native message images use separate user and output positions. The `conversation.chat.user.content` Factory declares `conversation.chat.user.images`, which `UserContent` renders; the Assistant node registration declares `conversation.chat.message.images`, which `AssistantMarkdown` renders. Both receive image sources, the authorized `loadImage`, and layout options through explicit props. Their official `MessageImages` entries call the shared root-scoped `conversation.images.content` Factory. Each position can be replaced independently without duplicating the gallery implementation.
 
 The session-scoped `conversation.chat.user.content` Factory renders only the user content stack: text, extra blocks, image/file attachments in input order, and reference summaries. Its [`UserContentInput`](src/client/contract/slots.ts) carries prepared `content`, transform `facts`, display props, and explicit `loadImage`; node-owned injections provide reference actions. It calls the shared `conversation.user.text` Factory for text and its own image Slot for images. Direct callers need a Session binding and supply their own row wrapper.
 
-`UserStyleBubble` and the [source-specific wrappers](<src/client/chat/MessageItem.tsx#L157-L309>) retain the user row, keys, pending/echo markers, timestamps, copy controls, and other message actions. The content Factory reads neither source-specific models nor private Context, and is not a global user-content override entry point.
+`UserStyleBubble` and the [source-specific wrappers](<src/client/chat/MessageItem.tsx#L164-L340>) retain the user row, keys, pending/echo markers, timestamps, copy controls, and other message actions. The content Factory reads neither source-specific models nor private Context, and is not a global user-content override entry point.
+
+The official user and steering renderer declares the session-scoped `conversation.chat.user.before` chain slot at its `user` registration and renders it directly above the bubble with `renderSlotChain`; the `steering` registration shares the renderer without owning the seat. Owner props carry the durable message `source` and row `kind`; each entry’s `select` matches its own sources, and the first non-null result reaches the elected component as `matched`. No match displays no content. Entries own their markup and copy; Chat does not interpret message sources.
 
 Standalone Markdown images show contained previews and open the shared image lightbox; local paths resolve against the viewed workspace after settlement. Image file links keep their sidebar activation and show a thumbnail after hover dwell or keyboard focus. Escape dismisses the thumbnail. Failed images retain a localized status and their description; no duplicate-image filtering is applied.
 
@@ -61,6 +63,8 @@ When an Assistant attempt retires without a visible message, Chat hides its alre
 
 Generic command rows retain the ordinary command glyph in every lifecycle state; failure remains explicit through the row state and summary. Every terminal Turn failure renders its inline red-dot row; a quota failure's row states the neutral `message.failure.quota` copy instead of the provider message. The transient notice for a newly appended `QUOTA` or `ACCOUNT_QUOTA` comes from this package's frame-wide entry in `shell.overlay`, which outlives the Chat panel: it offers the one live notice to the `shell.quota-notice` chain and falls back to its own warning Toast, while an entry that claims the code replaces that fallback. Only Sessions this Client has bound and materialized publish; quota failures in Sessions it never opened do not. A newer notice replaces the current one unless a claiming entry retains it with `keepOpen()`: that call returns a release the caller owns and must run on unmount, any live hold keeps the claiming entry mounted and drops later notices, and releasing resumes later notices without replaying the dropped ones. The fallback Toast has no deferral of its own: while the Desktop account's opaque native Platform page covers the document, it still runs underneath and its display timer may elapse unseen, dismissing the notice itself, so only the persistent failure row remains. A release drops only its own hold, so one that runs after a dismissal or a newer hold leaves that newer hold intact. Dismissal and sign-out clear every hold, and dropped notices are not queued while their persistent failure rows still render. History replacement and pagination never publish a notice. Intermediate retries do not create a terminal row; output-token limits use the amber warning dot. A Turn that restart recovery closed as `interrupted` renders a localized stopped row stating that the DSH process exited mid-Turn, without a code chip, and its process summary reads Stopped.
 
+Chat adapts Markdown targets at `MarkdownDelegateProvider.getTriggerProps`. The assistant-node Slot obtains `useContextMenu` directly and passes a file-path adapter to the optional mention service; intermediate flow and node owners carry no menu callbacks. Paths resolve against the originating Session’s current working directory when the gesture begins. Menus retain that captured path and line even if focus changes. Undeclared plugin links keep native behavior.
+
 -----
 
 <a id="turn-token-usage"></a>
@@ -182,6 +186,8 @@ The Chat view detects selection and context-menu gestures on business nodes mark
 
 `ctx.uiConversation.interactions` dispatches eligible gestures to plugin registrations and supplies their component to the Chat view. The action surface is absolutely positioned inside the existing Chat column, above the composer seat and its dock. Its wrapper preserves the component's outer stroke and shadow; components own internal scrolling. Scrolling the selection outside that visible region temporarily hides the surface; returning restores it. Chat owns viewport visibility, placement, outside pointer presses, Escape, new selections, source invalidation, and disposal; explicit dismissal preserves browser selection and layout changes do not reopen the surface. [Message quotes](../../session/message-quotes/README.md) owns quotation eligibility and insertion.
 
+Markdown files, links, images, reference chips, and tool-file controls forward explicit right-click targets to [ui-context-menu](../ui-context-menu/README.md). File targets retain their working directory and line; ordinary link clicks retain the configured opening preference.
+
 <a id="model-experience"></a>
 ## Model Experience
 
diff --git a/packages/client/ui-chat/README.zh.md b/packages/client/ui-chat/README.zh.md
index 096bdf6563..35231f8e5e 100644
--- a/packages/client/ui-chat/README.zh.md
+++ b/packages/client/ui-chat/README.zh.md
@@ -37,13 +37,15 @@ kind: "package-reference"
 
 已发送的普通文件附件保留草稿中的[文件卡片圆角](../../../docs/ui-radius.zh.md#radius-scale)。
 
-`ChatView` 通过节点列表外围既有的 `MarkdownDelegateProvider` 提供文件及 HTTP(S) 导航，直接传入 `requestOpenFile`、`openExternalLink` 和 `fileImages`。文件打开动作保留 Chat 的失败反馈与重试处理。Assistant Markdown 文件链接在消息落定后可于右侧栏打开，包括未修改文件的引用。相对路径基于当前查看的 Session 工作区解析；绝对路径仍使用同一 Session 的文件系统访问。`#L24` 和 `#L24-L30` 定位到指定起始行，并复用现有文件标签。文件缺失时显示预览错误状态。
+`ChatView` 通过节点列表外围既有的 `MarkdownDelegateProvider` 提供文件及 HTTP(S) 导航，直接传入 `requestOpenFile`、`openExternalLink` 和 `fileImages`。文件打开动作保留 Chat 的失败反馈与重试处理。Assistant Markdown 文件链接在消息落定后可于右侧栏打开，包括未修改文件的引用。相对路径基于当前查看的 Session 工作区解析；绝对路径仍使用同一 Session 的文件系统访问。[支持的 Markdown 行号引用](../ui-primitives/README.zh.md#rendering-agent-output)定位到指定起始行，并复用现有文件标签。文件缺失时显示预览错误状态。
 
 原生消息图片使用独立的用户与输出位置。`conversation.chat.user.content` Factory 声明 `conversation.chat.user.images`，由 `UserContent` 渲染；Assistant 节点注册声明 `conversation.chat.message.images`，由 `AssistantMarkdown` 渲染。两者通过显式 props 接收图片来源、授权 `loadImage` 和布局参数。官方 `MessageImages` 条目调用共享的 root 作用域 `conversation.images.content` Factory。每个位置均可独立替换，无需复制画廊实现。
 
 Session 作用域的 `conversation.chat.user.content` Factory 只渲染用户内容区域：文本、额外内容块、按输入顺序排列的图片／文件附件及引用摘要。[`UserContentInput`](src/client/contract/slots.ts) 携带预处理的 `content`、变换 `facts`、显示 props 和显式 `loadImage`；引用动作由节点自己的 Injection 提供。正文调用共享 `conversation.user.text` Factory，图片调用自身拥有的图片 Slot。直接调用需要 Session 绑定，行包装层由调用方提供。
 
-`UserStyleBubble` 和[各来源包装层](<src/client/chat/MessageItem.tsx#L157-L309>) 保留用户行、key、pending／echo 标记、时间、复制控件及其他消息操作。内容 Factory 不读取来源专属模型或私有 Context，也不是全局用户内容替换入口。
+`UserStyleBubble` 和[各来源包装层](<src/client/chat/MessageItem.tsx#L164-L340>) 保留用户行、key、pending／echo 标记、时间、复制控件及其他消息操作。内容 Factory 不读取来源专属模型或私有 Context，也不是全局用户内容替换入口。
+
+官方 user 与 steering 共用的渲染器在 `user` 注册项上声明 session-scoped `conversation.chat.user.before` chain slot，并在气泡上方直接通过 `renderSlotChain` 渲染；`steering` 注册项复用该渲染器但不拥有该槽位。owner props 携带 Session 记录的持久化消息 `source` 与行 `kind`；各条目的 `select` 匹配自己负责的来源，首个非 null 结果作为 `matched` 交给获选组件。无匹配时不显示内容。条目自行拥有标记和文案；Chat 不解析消息来源。
 
 独立的 Markdown 图片以内嵌预览显示，点击打开共享图片浮层；本地路径在消息落定后基于当前查看的工作区解析。图片文件链接保持点击打开侧栏，鼠标停留或键盘聚焦时显示缩略图，Esc 关闭缩略图。图片加载失败时保留本地化状态与图片说明；不执行重复图片过滤。
 
@@ -61,6 +63,8 @@ Assistant 尝试结束且没有可见消息时，Chat 隐藏已发布的 Node，
 
 通用指令行在所有生命周期状态中都保留普通指令图标；失败仍通过行状态与摘要表达。每个终止轮次都渲染自己的红点行；欠费失败的行使用中立的 `message.failure.quota` 文案，而不是提供方消息。新追加的 `QUOTA` 或 `ACCOUNT_QUOTA` 产生的瞬时提示来自本包注册在 `shell.overlay` 的全局条目，它不随 Chat 面板消失：该条目把唯一一条实时提示交给 `shell.quota-notice` 链，并在无人接管时回退到自己的警告 Toast，接管该错误码的条目会替换该回退。只有本 Client 已绑定并已物化的 Session 会发布提示；它从未打开的 Session 中的欠费不会发布。更新的提示会替换当前提示，除非认领条目用 `keepOpen()` 保持住当前提示：该调用返回一个由调用方持有、必须在卸载时调用的释放函数，只要存在保持，认领条目就继续挂载，后续提示被丢弃，释放后恢复后续提示但不重放已丢弃的提示。回退 Toast 自身没有延后策略：当 Desktop 账号的不透明原生 Platform 页盖住本页时，它仍会在下方运行，其显示计时器可能在不可见时走完并自行撤下提示，因此只留下持久化失败行。释放只移除自己的保持，因此它在关闭或更新的保持之后执行时不会影响更新的保持。关闭与退出登录会清空所有保持；被丢弃的提示不排队，其对应的持久化失败行仍会渲染。历史替换和分页不会发布提示。中间重试不会创建终止行；输出 token 上限使用琥珀色警告点。重启恢复以 `interrupted` 结束的轮次会渲染本地化的停止行，说明 DSH 进程在轮次中途退出，不显示代码标签，其过程摘要显示“已停止”。
 
+Chat 在 `MarkdownDelegateProvider.getTriggerProps` 接入处适配 Markdown 目标。助手节点 Slot 直接获取 `useContextMenu`，向可选的文件引用服务传入路径适配函数；消息流和节点中间层不再携带菜单回调。手势发生时按原始 Session 的当前工作目录解析路径，菜单保留捕获的路径和行号，不受焦点变化影响。未声明的插件链接保留原生行为。
+
 -----
 
 <a id="turn-token-usage"></a>
@@ -182,6 +186,8 @@ Chat view 在标记了 `data-text-interaction-source` 的业务节点上检测
 
 `ctx.uiConversation.interactions` 将有效手势分发给插件注册项，并把对应组件交给 Chat view。操作展示位置在已有 Chat 列内绝对定位，限制在 composer seat 及其 dock 上方。外层容器保留组件的外描边与阴影，内部滚动由组件负责。选区滚出该可见范围时暂时隐藏操作，滚回后恢复。Chat 负责视口可见性、定位、外部指针按下、Escape、新选区、来源失效与卸载清理；主动关闭保留浏览器选区，布局变化不会重新打开操作。[Message quotes](../../session/message-quotes/README.zh.md) 负责引用的接管条件和插入。
 
+Markdown 文件、链接、图片、引用 chip 和工具文件控件将明确的右键目标转发给 [ui-context-menu](../ui-context-menu/README.zh.md)。文件目标保留工作目录和行号；普通链接点击仍遵循配置的打开偏好。
+
 <a id="model-experience"></a>
 ## 模型体验
 
diff --git a/packages/client/ui-chat/package.json b/packages/client/ui-chat/package.json
index 223a8dc369..c8a468b48c 100644
--- a/packages/client/ui-chat/package.json
+++ b/packages/client/ui-chat/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-chat",
   "description": "Chat Conversation target, node definitions, renderers, and details surface",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -42,7 +42,8 @@
         "@deepseek-ai/dsh-client-ui-settings",
         "@deepseek-ai/dsh-client-ui-sidebar-right",
         "@deepseek-ai/dsh-client-ui-workspace",
-        "@deepseek-ai/dsh-client-ui-file-drag"
+        "@deepseek-ai/dsh-client-ui-file-drag",
+        "@deepseek-ai/dsh-client-ui-context-menu"
       ],
       "platform": "web"
     }
@@ -97,7 +98,8 @@
     "react-dom": "^18.2.0",
     "@deepseek-ai/dsh-settings": "workspace:*",
     "@deepseek-ai/dsh-client-product-analytics": "workspace:*",
-    "@deepseek-ai/dsh-client-ui-file-drag": "workspace:*"
+    "@deepseek-ai/dsh-client-ui-file-drag": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "dependencies": {
     "@deepseek-ai/schemastery": "workspace:~"
diff --git a/packages/client/ui-chat/src/client/apply.ts b/packages/client/ui-chat/src/client/apply.ts
index fbabf95903..d3a6df8b96 100644
--- a/packages/client/ui-chat/src/client/apply.ts
+++ b/packages/client/ui-chat/src/client/apply.ts
@@ -1,3 +1,4 @@
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /** Register the Chat Conversation target, renderers, stats, and details surface. */
 import type {} from '@deepseek-ai/dsh-client-ui-file-drag/client'
 import type {} from '@deepseek-ai/dsh-client-product-analytics/client'
@@ -25,11 +26,12 @@ import type {} from '@deepseek-ai/dsh-client-ui-workspace/client'
 import type { ConnectionHandle } from '@deepseek-ai/dsh-client-connection/client'
 import type {
   ChatFlowDataInjected, ChatFlowInjected, ChatNodeInjected, ChatScrollPosition, ChatViewInjected,
-  QuotaNoticeInjected, QuotaNoticeState, TurnTailOwnerProps,
+  QuotaNoticeInjected, QuotaNoticeState,
 } from './contract/slots.ts'
 import type { ChatSnapshot } from './contract/snapshot.ts'
 import { EMPTY_CHAT_SNAPSHOT } from './contract/snapshot.ts'
 import { ApprovalCommand } from './chat/ApprovalCommand.tsx'
+import { sessionFilePath } from './file-path.ts'
 import { ChatView } from './chat/ChatView.tsx'
 import { ChatFlow } from './chat/ChatFlow.tsx'
 import { registerChatNodeRenderers } from './chat/register-node-renderers.ts'
@@ -253,7 +255,6 @@ export function apply(ctx: Context): void {
           fileDrag: ctx.fileDrag.actions,
           hooks: { presentation, interactionIds: ctx.uiConversation.interactions },
           dispatchInteraction: gesture => ctx.uiConversation.interactions.dispatch(sessionId, gesture),
-          fileMentions: (owner: TurnTailOwnerProps) => ctx.get('chatFileMentions')?.forClosing(owner, sessionId),
           // Files open in the right Sidebar, not in a desktop application: the
           // content stays in the product, beside the conversation that produced
           // it. A relative path resolves from the Session's working directory
@@ -276,6 +277,7 @@ export function apply(ctx: Context): void {
             else ctx.sidebarRight.openResource(url, { params: { line: options.line } })
             await Promise.resolve()
           },
+          resolveFilePath: sessionFilePath(ctx, sessionId),
           openExternalLink: (url) => {
             if (linkOpening.getSnapshot() === 'sidebar' && ctx.get('sidebarRightTabs')?.get('browser') !== undefined) {
               ctx.sidebarRight.openTab('browser', { params: { url } })
diff --git a/packages/client/ui-chat/src/client/chat/AssistantNodeView.tsx b/packages/client/ui-chat/src/client/chat/AssistantNodeView.tsx
index 455f90f9a2..ad5963c093 100644
--- a/packages/client/ui-chat/src/client/chat/AssistantNodeView.tsx
+++ b/packages/client/ui-chat/src/client/chat/AssistantNodeView.tsx
@@ -1,16 +1,28 @@
 import { memo, useCallback, useMemo } from 'react'
 import type { InjectFace, PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
-import type { ChatNodeViewProps, PresentationInjected, TurnTailOwnerProps } from '../contract/slots.ts'
+import type { ChatFileMentions, ChatNodeViewProps, PresentationInjected, TurnTailOwnerProps } from '../contract/slots.ts'
 import { AssistantMarkdown } from './AssistantMarkdown.tsx'
 
-type AssistantNodeViewProps = ChatNodeViewProps<'assistant-step'> & InjectFace<PresentationInjected>
+/** Business readers owned by the assistant renderer's existing Slot registration. */
+export interface AssistantNodeInjected extends PresentationInjected {
+  /** Resolve against the live Session directory. @param path - Recorded path. @returns Host path. */
+  resolveFilePath: (path: string) => string
+  /** Resolve closing-Turn mentions with the supplied ordinary file gesture callback. */
+  fileMentions: (owner: TurnTailOwnerProps, getFileTriggerProps: NonNullable<Parameters<ChatFileMentions['forClosing']>[2]>) => ReturnType<ChatFileMentions['forClosing']>
+}
+
+type AssistantNodeViewProps = ChatNodeViewProps<'assistant-step'> & InjectFace<AssistantNodeInjected>
   & PropsRenderSlots<'conversation.chat.reasoning.body' | 'conversation.chat.message.images'>
 
 /** Streaming, settled, and interrupted Assistant states share one keyed renderer instance. */
 export const AssistantNodeView = memo(function AssistantNodeView({
   node, groupPart, useDisclosure, useGroupAction, useTurnData, turnProcess, openFile, loadImage, fileMentions,
-  usePresentation, renderSlot, t,
+  usePresentation, renderSlot, t, sessionId, useContextMenu, resolveFilePath,
 }: AssistantNodeViewProps) {
+  const { getTriggerProps } = useContextMenu()
+  const getFileTriggerProps = useCallback((path: string) => getTriggerProps(() => ({
+    kind: 'file', value: { sessionId, path: resolveFilePath(path) },
+  })), [getTriggerProps, sessionId, resolveFilePath])
   const data = node.data
   const turn = node.location.kind === 'turn' || node.location.kind === 'step'
     ? node.location.turn
@@ -22,8 +34,8 @@ export const AssistantNodeView = memo(function AssistantNodeView({
     return { turn, seq: data.finalNode.seq, openFile }
   }, [data.finalNode, openFile, tail, turn])
   const mentions = useMemo(
-    () => owner === undefined ? undefined : fileMentions(owner),
-    [fileMentions, owner],
+    () => owner === undefined ? undefined : fileMentions(owner, getFileTriggerProps),
+    [fileMentions, owner, getFileTriggerProps],
   )
   const keepReplies = usePresentation(policy => policy.foldedReplies === 'all')
   // A kept reply row stays visible while the folded Turn hides its inline reasoning.
diff --git a/packages/client/ui-chat/src/client/chat/ChatFlow.tsx b/packages/client/ui-chat/src/client/chat/ChatFlow.tsx
index 86bcdaa542..d83a3043cc 100644
--- a/packages/client/ui-chat/src/client/chat/ChatFlow.tsx
+++ b/packages/client/ui-chat/src/client/chat/ChatFlow.tsx
@@ -27,7 +27,7 @@ export const ChatFlow = memo(function ChatFlow({
   entries, pendingInputs, lastInputTurn, deferCollapse,
   useSession, useChat, useChatNode, useChatNodeBottom, useChatNodeProcess, useChatGroup, usePresentation, useConnectionState,
   useStore, actions, renderSlot, renderFactorySlot, t, useGroupAction, useGroupHeaderAction,
-  cwd, openFile, inspectCall, forkAt, loadImage, fileMentions,
+  cwd, openFile, inspectCall, forkAt, loadImage,
 }: ChatFlowSlotProps) {
   const nodeStore = useChat(snapshot => snapshot.nodes)
   const running = useSession(snapshot => snapshot.running)
@@ -47,7 +47,7 @@ export const ChatFlow = memo(function ChatFlow({
   const seatProps = {
     nodeStore, useChatNode, useChatNodeBottom, useChatNodeProcess, usePresentation,
     useStore, actions, renderSlot, t, useGroupAction, deferCollapse,
-    cwd, openFile, inspectCall, forkAt, loadImage, fileMentions,
+    cwd, openFile, inspectCall, forkAt, loadImage,
   }
   const rows = entries.map((entry) => {
     switch (entry.kind) {
diff --git a/packages/client/ui-chat/src/client/chat/ChatNodeSeat.tsx b/packages/client/ui-chat/src/client/chat/ChatNodeSeat.tsx
index 6db2f75821..4efdb94142 100644
--- a/packages/client/ui-chat/src/client/chat/ChatNodeSeat.tsx
+++ b/packages/client/ui-chat/src/client/chat/ChatNodeSeat.tsx
@@ -50,7 +50,7 @@ function turnOf(node: ChatNode | undefined): number | undefined {
 export const ChatNodeSeat = memo(function ChatNodeSeat({
   nodeKey, groupPart, useChatNode, useChatNodeProcess, usePresentation,
   cwd, openFile, inspectCall, forkAt,
-  loadImage, fileMentions, useStore, actions, renderSlot, t, useChatNodeBottom, deferCollapse, useGroupAction,
+  loadImage, useStore, actions, renderSlot, t, useChatNodeBottom, deferCollapse, useGroupAction,
 }: ChatNodeSeatProps) {
   const bottom = useChatNodeBottom(nodeKey)
   const node = useChatNode(nodeKey)
@@ -138,11 +138,10 @@ export const ChatNodeSeat = memo(function ChatNodeSeat({
       inspectCall,
       forkAt,
       loadImage,
-      fileMentions,
       turnProcess,
     }, [
     node, groupPart, cwd, openFile, inspectCall, forkAt,
-    loadImage, fileMentions, turnProcess,
+    loadImage, turnProcess,
   ])
   if (routedNode === undefined || owner === null) return null
   // Runtime dispatch owns the correlation: every Node's discriminant is the
diff --git a/packages/client/ui-chat/src/client/chat/ChatView.tsx b/packages/client/ui-chat/src/client/chat/ChatView.tsx
index 703fe65449..e265ab635f 100644
--- a/packages/client/ui-chat/src/client/chat/ChatView.tsx
+++ b/packages/client/ui-chat/src/client/chat/ChatView.tsx
@@ -8,7 +8,7 @@ import type {
 import type { InboxState } from '@deepseek-ai/dsh-agent/types'
 import type { PendingSubmission } from '@deepseek-ai/dsh-api-session-controller/client'
 import {
-  Button, IconChevronDownOutlineRegular, MarkdownDelegateProvider, Modal,
+  Button, IconChevronDownOutlineRegular, MarkdownDelegateProvider, Modal, type MarkdownMenuTarget,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import { isAtOrOutside } from '../contract/group-tree.ts'
 import type { ChatFlowHookContext, ChatViewSlotProps, OpenFileOptions } from '../contract/slots.ts'
@@ -60,9 +60,22 @@ const MOTION_TAIL_MS = 800
  */
 export function ChatView({
   useSession, useChat, useConversation, useSessions, renderSlot,
-  sessionId, openFile, openExternalLink, loadOlder, loadThrough, loadImage, inspectCall, chatScroll, forkAt, fileMentions,
+  sessionId, openFile, openExternalLink, resolveFilePath, useContextMenu,
+  loadOlder, loadThrough, loadImage, inspectCall, chatScroll, forkAt,
   usePresentation, useProjection, useInteractionIds, dispatchInteraction, t, fileDrag,
 }: ChatViewSlotProps) {
+  const { getTriggerProps } = useContextMenu()
+  const getMarkdownTriggerProps = useCallback((target: MarkdownMenuTarget) => getTriggerProps(() => {
+    switch (target.kind) {
+      case 'file': return { kind: 'file', value: { sessionId, path: resolveFilePath(target.path),
+        ...(target.line === undefined ? {} : { line: target.line }) } }
+      case 'url': return { kind: 'url', value: { sessionId, url: target.url } }
+      case 'image': return { kind: 'image', value: { sessionId, url: target.url,
+        ...(target.name === undefined ? {} : { name: target.name }),
+        ...(target.mediaType === undefined ? {} : { mediaType: target.mediaType }),
+        ...(target.path === undefined ? {} : { path: resolveFilePath(target.path) }) } }
+    }
+  }), [getTriggerProps, resolveFilePath, sessionId])
   const order = useChat(s => s.order)
   const groupedEntries = useConversation(snapshot => snapshot.views.grouped('chat')?.entries)
   const entries = useMemo<readonly RenderEntry[]>(() => groupedEntries
@@ -230,10 +243,15 @@ export function ChatView({
                 </button>
               </div>
             )}
-            <MarkdownDelegateProvider openFile={requestOpenFile} openExternalLink={openExternalLink} fileImages={fileImages}>
+            <MarkdownDelegateProvider
+              getTriggerProps={getMarkdownTriggerProps}
+              openFile={requestOpenFile}
+              openExternalLink={openExternalLink}
+              fileImages={fileImages}
+            >
               {renderSlot('conversation.chat.flow', {
                 entries, pendingInputs, lastInputTurn, deferCollapse,
-                cwd, openFile: requestOpenFile, inspectCall, forkAt, loadImage, fileMentions,
+                cwd, openFile: requestOpenFile, inspectCall, forkAt, loadImage,
               }, { hookContext: flowContext })}
             </MarkdownDelegateProvider>
             <div ref={interactionSurfaceRef} className={css.textInteraction} data-text-interaction-surface=""
diff --git a/packages/client/ui-chat/src/client/chat/MessageItem.tsx b/packages/client/ui-chat/src/client/chat/MessageItem.tsx
index f1535abcd9..f9551a8698 100644
--- a/packages/client/ui-chat/src/client/chat/MessageItem.tsx
+++ b/packages/client/ui-chat/src/client/chat/MessageItem.tsx
@@ -1,7 +1,7 @@
 import { memo, useEffect, useMemo, useState } from 'react'
 import type { ReactNode } from 'react'
 import type { PendingSubmission } from '@deepseek-ai/dsh-api-session-controller/client'
-import type { PropsRenderFactories } from '@deepseek-ai/dsh-client-ui-slots'
+import type { PropsRenderFactories, PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
 import type { UserTextFacts } from '@deepseek-ai/dsh-client-ui-conversation/client'
 import { JsonBlock, StateDot, TextShimmer } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {
@@ -160,15 +160,35 @@ function TurnMaxTokensItem({ t }: {
   )
 }
 
+/**
+ * A row the message-source seat decorates. A durable Chat node satisfies it;
+ * pending and local-echo rows pass a source-less stand-in.
+ */
+interface DecoratedRow {
+  readonly kind: 'user' | 'steering'
+  readonly data: { readonly source: unknown }
+}
+
+/** Pending and local-echo rows carry no durable source for the seat to elect. */
+const UNDECORATED_ROW: DecoratedRow = { kind: 'user', data: { source: null } }
+
+/** Occupant used by rows that do not own the message-source seat. */
+const NO_MESSAGE_SOURCE: PropsRenderSlots<'conversation.chat.user.before'>['renderSlotChain'] = () => null
+
 /** Right-aligned bubble shared by user and steering rows. */
 function UserStyleBubble({
-  content, loadImage, renderFactorySlot, actions, pending = false, echo = false, batchStart = false,
+  node, renderSlotChain, content, loadImage, renderFactorySlot, actions,
+  pending = false, echo = false, batchStart = false,
   referenceLabels, skillNames, previewAttachments, facts: inputFacts = EMPTY_TEXT_FACTS, interactive = false,
 }: {
   content: readonly unknown[]
   renderFactorySlot: PropsRenderFactories['renderFactorySlot']
   /** Optional IconActions (or similar) below the bubble; receives the joined text. */
   actions?: (text: string) => ReactNode
+  /** Row whose durable source the message-source seat elects above this bubble. */
+  node: DecoratedRow
+  /** Seat renderer; rows that do not own the seat pass {@link NO_MESSAGE_SOURCE}. */
+  renderSlotChain: PropsRenderSlots<'conversation.chat.user.before'>['renderSlotChain']
   /** Whether this is the Host-authoritative pre-admission steering projection. */
   pending?: boolean
   /** Whether this is a local submission echo (invisible marker; the echo renders exactly like its durable replacement). */
@@ -203,6 +223,7 @@ function UserStyleBubble({
       data-submission-echo={echo || undefined}
       data-chat-steering-batch={batchStart ? 'start' : undefined}
     >
+      {renderSlotChain('conversation.chat.user.before', { source: node.data.source, kind: node.kind }, { fallback: null })}
       {renderFactorySlot('conversation.chat.user.content', {
         content: prepared,
         loadImage,
@@ -227,6 +248,8 @@ export function PendingSteeringBubble({ content, loadImage, renderFactorySlot, t
 } & Pick<ChatNodeOwnerProps, 'loadImage'>): ReactNode {
   return (
     <UserStyleBubble
+      node={UNDECORATED_ROW}
+      renderSlotChain={NO_MESSAGE_SOURCE}
       content={content}
       renderFactorySlot={renderFactorySlot}
       loadImage={loadImage}
@@ -278,6 +301,8 @@ export function PendingSubmissionBubble({ submission, loadImage, renderFactorySl
   )
   return (
     <UserStyleBubble
+      node={UNDECORATED_ROW}
+      renderSlotChain={NO_MESSAGE_SOURCE}
       content={content}
       previewAttachments={previewAttachments}
       renderFactorySlot={renderFactorySlot}
@@ -297,13 +322,24 @@ export function PendingSubmissionBubble({ submission, loadImage, renderFactorySl
   )
 }
 
-/** User and admitted-steering keyed Chat renderer. */
+/**
+ * Official user and admitted-steering keyed Chat renderer.
+ *
+ * Renders the durable-message chain seat directly above the bubble. The seat is
+ * declared by the `user` registration alone, so a steering row renders the same
+ * bubble without asking for it.
+ */
 export const UserMessageNodeView = memo(function UserMessageNodeView({
-  node, renderFactorySlot, loadImage, t,
-}: ChatNodeViewProps<'user' | 'steering'>) {
+  node, renderFactorySlot, loadImage, renderSlotChain, t,
+}: ChatNodeViewProps<'user' | 'steering'> & {
+  /** Bound by the `user` keyed registration, the only entry that declares the seat. */
+  renderSlotChain: PropsRenderSlots<'conversation.chat.user.before'>['renderSlotChain']
+}) {
   const data = node.data
   return (
     <UserStyleBubble
+      node={node}
+      renderSlotChain={renderSlotChain}
       content={data.content}
       interactive
       renderFactorySlot={renderFactorySlot}
diff --git a/packages/client/ui-chat/src/client/chat/register-node-renderers.ts b/packages/client/ui-chat/src/client/chat/register-node-renderers.ts
index 7e58223287..d12619a624 100644
--- a/packages/client/ui-chat/src/client/chat/register-node-renderers.ts
+++ b/packages/client/ui-chat/src/client/chat/register-node-renderers.ts
@@ -3,7 +3,8 @@ import type { ObservableSnapshot } from '@deepseek-ai/dsh-client-store'
 import type { PerformanceUsageMode } from '../../chat-settings.ts'
 import type { ChatPresentationPolicy } from '../presentation-policy.ts'
 import { NS } from '../locale.ts'
-import { AssistantNodeView } from './AssistantNodeView.tsx'
+import { AssistantNodeView, type AssistantNodeInjected } from './AssistantNodeView.tsx'
+import { sessionFilePath } from '../file-path.ts'
 import { CommandNodeView, ManualCompactionNodeView } from './CommandNodeView.tsx'
 import {
   CompactionNodeView, ContextMessageNodeView, RetryNodeView, TurnErrorNodeView,
@@ -37,10 +38,15 @@ export function registerChatNodeRenderers(
     name: 'conversation.chat.reasoning.body',
     priority: 100,
   }, DefaultReasoningBody))
-  ctx.slots.inject('conversation.chat.node', () => ctx.slots.register(
-    { name: 'conversation.chat.node', key: 'user', locale: NS }, UserMessageNodeView))
-  ctx.slots.inject('conversation.chat.node', () => ctx.slots.register(
-    { name: 'conversation.chat.node', key: 'steering', locale: NS }, UserMessageNodeView))
+  ctx.slots.inject('conversation.chat.node', () => ctx.slots.register({
+    name: 'conversation.chat.node', key: 'user', locale: NS,
+    children: { 'conversation.chat.user.before': { kind: 'chain', scope: 'session' } },
+  }, UserMessageNodeView))
+  // Steering rows share the renderer without owning the message-source seat.
+  ctx.slots.inject('conversation.chat.node', () => ctx.slots.register({
+    name: 'conversation.chat.node', key: 'steering', locale: NS,
+    inject: () => ({ renderSlotChain: () => null }),
+  }, UserMessageNodeView))
   ctx.slots.inject('conversation.chat.node', () => ctx.slots.register(
     { name: 'conversation.chat.node', key: 'context', locale: NS }, ContextMessageNodeView))
   ctx.slots.inject('conversation.chat.node', () => ctx.slots.register(
@@ -55,7 +61,11 @@ export function registerChatNodeRenderers(
       'conversation.chat.reasoning.body': { kind: 'single', scope: 'session' },
       'conversation.chat.message.images': { kind: 'single', scope: 'session' },
     },
-    inject: () => ({ hooks: { presentation } }),
+    inject: (sessionId): AssistantNodeInjected => ({
+      hooks: { presentation },
+      resolveFilePath: sessionFilePath(ctx, sessionId),
+      fileMentions: (owner, getFileTriggerProps) => ctx.get('chatFileMentions')?.forClosing(owner, sessionId, getFileTriggerProps),
+    }),
   }, AssistantNodeView))
   ctx.slots.inject('conversation.chat.node', () => ctx.slots.register({
     name: 'conversation.chat.node',
diff --git a/packages/client/ui-chat/src/client/contract/slots.ts b/packages/client/ui-chat/src/client/contract/slots.ts
index 948a546689..9479bde696 100644
--- a/packages/client/ui-chat/src/client/contract/slots.ts
+++ b/packages/client/ui-chat/src/client/contract/slots.ts
@@ -17,7 +17,9 @@ import type {
 } from '@deepseek-ai/dsh-client-ui-slots'
 import type { ObservableSnapshot } from '@deepseek-ai/dsh-client-store'
 import type { ConnectionStateSource } from '@deepseek-ai/dsh-client-connection/client'
-import type { MarkdownFileMentions, MarkdownLabels } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { FileDragActions, MarkdownFileMentions, MarkdownLabels } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { ContextMenuTriggerProps } from '@deepseek-ai/dsh-client-ui-context-menu/client'
+import type { ChatKey } from '../locale.ts'
 import type {} from '@deepseek-ai/dsh-client-ui-layout/client'
 // Type-only: the Session-scope access Hook (`useAccess`) the Chat entries read.
 import type {} from '@deepseek-ai/dsh-client-ui-session/client'
@@ -136,9 +138,12 @@ export interface ChatFileMentions {
    * Resolve prose links for one closing Turn.
    * @param owner - closing-Turn identity and file opener.
    * @param sessionId - viewed Session, including when history is inherited from a fork.
+   * @param getFileTriggerProps - ordinary gesture binding for a resolved file path.
    * @returns link resolver when available.
    */
-  forClosing(owner: TurnTailOwnerProps, sessionId: SessionId): MarkdownFileMentions | undefined
+  forClosing(
+    owner: TurnTailOwnerProps, sessionId: SessionId, getFileTriggerProps?: (path: string) => ContextMenuTriggerProps,
+  ): MarkdownFileMentions | undefined
 }
 
 declare module '@deepseek-ai/cordis' {
@@ -209,6 +214,20 @@ export interface ChatNodeInjected {
   }
 }
 
+/**
+ * Owner currency of the message-source decoration above one user message bubble.
+ *
+ * Entry selectors receive the durable message `source` and row kind. A
+ * non-null selection elects the component and reaches it as `matched`.
+ * Entries own their markup and copy; Chat does not interpret the source.
+ */
+export interface UserBeforeOwnerProps {
+  /** Durable message source; Chat does not interpret it. */
+  readonly source: unknown
+  /** Chat row kind that owns the decoration site. */
+  readonly kind: 'user' | 'steering'
+}
+
 /** Stable owner currency delivered to a keyed Chat renderer. */
 export interface ChatNodeOwnerProps {
   /** Renderer-owned Node portion selected by the grouping Definition. */
@@ -219,7 +238,6 @@ export interface ChatNodeOwnerProps {
   forkAt: (seq: number) => void
   /** Session-authorized image loader supplied by the Chat view. */
   loadImage: MessageImageLoader
-  fileMentions: (owner: TurnTailOwnerProps) => MarkdownFileMentions | undefined
   /** Turn-process state when this Node belongs to a projected Turn. */
   turnProcess?: TurnProcessOwnerProps | undefined
 }
@@ -299,7 +317,9 @@ export interface PerformanceUsageInjected {
 /** Business callbacks injected into the Chat view. */
 export interface ChatViewInjected {
   /** File preparation and failure callbacks owned by the file-drag plugin. */
-  readonly fileDrag: import('@deepseek-ai/dsh-client-ui-primitives').FileDragActions
+  readonly fileDrag: FileDragActions
+  /** Resolve the reference against this Session and its current path base when the gesture begins. */
+  resolveFilePath: (path: string) => string
   /** Dispatch one gesture to the Conversation plugin registry. */
   dispatchInteraction: (gesture: TextInteractionGesture) => string | null
   hooks: {
@@ -330,7 +350,6 @@ export interface ChatViewInjected {
     read: () => ChatScrollPosition | null
   }
   forkAt: (seq: number) => void
-  fileMentions: (owner: TurnTailOwnerProps) => MarkdownFileMentions | undefined
 }
 
 /** Session-owned node sources shared with the view, plus the flow's connection state. */
@@ -343,7 +362,7 @@ export type ChatFlowDataInjected = Pick<ChatViewInjected, 'keyedHooks'> & {
 
 /** Ordered rows and reconciled local echoes rendered inside one Chat viewport. */
 export interface ChatFlowOwnerProps extends Pick<ChatNodeOwnerProps,
-  'cwd' | 'openFile' | 'inspectCall' | 'forkAt' | 'loadImage' | 'fileMentions'> {
+  'cwd' | 'openFile' | 'inspectCall' | 'forkAt' | 'loadImage'> {
   readonly entries: readonly RenderEntry[]
   readonly pendingInputs: readonly (PendingSubmission | InboxState['next-step'][number])[]
   readonly lastInputTurn: number | undefined
@@ -379,7 +398,7 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
 
   interface LocaleNamespaceMap {
     /** Chat target, transcript node, statistics, and details copy. */
-    chat: import('../locale.ts').ChatKey
+    chat: ChatKey
   }
 
   interface SlotFactoryMap {
@@ -423,6 +442,17 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
       hookContext: ChatNodeHookContext
       inject: ChatNodeInjected
     }
+    /**
+     * Message-source decoration owned and rendered by the user Node entry.
+     * Selectors elect one component from the durable source and row kind.
+     * No match renders no visible content; steering and pending rows do not
+     * render this slot.
+     */
+    'conversation.chat.user.before': {
+      kind: 'chain'
+      scope: 'session'
+      owner: UserBeforeOwnerProps
+    }
     /**
      * Renderer for one consecutive group of durable message images. The owner
      * supplies image references, an authorized loader, and alignment. A
diff --git a/packages/client/ui-chat/src/client/file-path.ts b/packages/client/ui-chat/src/client/file-path.ts
new file mode 100644
index 0000000000..9c23fdc21d
--- /dev/null
+++ b/packages/client/ui-chat/src/client/file-path.ts
@@ -0,0 +1,19 @@
+/** Gesture-time path resolution for Chat-owned file references. */
+import type { Context } from '@deepseek-ai/cordis'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import { resolveWorkspacePath } from '@deepseek-ai/dsh-util-workspace-path'
+import type {} from '@deepseek-ai/dsh-api-session-controller/client'
+
+/**
+ * Bind path resolution to the originating Session without capturing its current directory.
+ * @param ctx - Chat plugin context.
+ * @param sessionId - Original Session identity.
+ * @returns Resolver using the live working directory, falling back to the workspace root.
+ */
+export function sessionFilePath(ctx: Context, sessionId: SessionId): (path: string) => string {
+  return (path) => {
+    const cwd = ctx.sessions.list.getSnapshot().byId[sessionId]?.cwd
+    const current = ctx.sessions.binding(sessionId)?.session.projections.faceOf('workingDirectory').getSnapshot() as string | null | undefined
+    return resolveWorkspacePath(current ?? cwd, path)
+  }
+}
diff --git a/packages/client/ui-chat/src/client/index.ts b/packages/client/ui-chat/src/client/index.ts
index 275d76b96b..c785329f0a 100644
--- a/packages/client/ui-chat/src/client/index.ts
+++ b/packages/client/ui-chat/src/client/index.ts
@@ -1,3 +1,4 @@
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /** Browser Chat target plugin. */
 export { apply, inject } from './apply.ts'
 export type {} from './conversation-nodes/assistant.ts'
@@ -39,6 +40,7 @@ export type {
   CommandRowOwnerProps, CommandRowProps, MessageImagesProps, OpenFileOptions, PresentationInjected,
   QuotaNoticeCode, QuotaNoticeHostProps, QuotaNoticeInjected, QuotaNoticeOwnerProps, QuotaNoticeState,
   ReasoningBodyOwnerProps, ReasoningContentInput, UserContentAttachment, UserContentData, UserContentInput,
+  UserBeforeOwnerProps,
   TurnProcessOwnerProps, TurnTailOwnerProps, UseChat, UseChatNodeTurnData, UseDisclosure, UsePresentation, UseGroupAction,
 } from './contract/slots.ts'
 export type {
diff --git a/packages/client/ui-chat/tests/apply-inject.client.spec.tsx b/packages/client/ui-chat/tests/apply-inject.client.spec.tsx
index 9687743249..8ee48b8f65 100644
--- a/packages/client/ui-chat/tests/apply-inject.client.spec.tsx
+++ b/packages/client/ui-chat/tests/apply-inject.client.spec.tsx
@@ -1,4 +1,6 @@
+import type { AssistantNodeInjected } from '../src/client/chat/AssistantNodeView.tsx'
 import { MessageId } from '@deepseek-ai/dsh-llm/brand'
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 // @vitest-environment jsdom
 /** Chat inject factories exercised over independently mounted Conversation and Chat plugins. */
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
@@ -100,6 +102,8 @@ async function bench(initialSettings?: ChatSettings, withBrowserRegistry = true,
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
   runtime.slots.installLocale(locale)
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   await runtime.root.declare({
     'main': { kind: 'keyed', scope: 'root' },
     'settings.general.item': { kind: 'list', scope: 'root' },
@@ -314,9 +318,15 @@ describe('Chat inject API', () => {
   it('resolves relative file paths against the Session\'s current working directory', async () => {
     const b = await bench()
     const { injected } = b.chatViewApi(b.rootReference)
+    vi.spyOn(b.runtime.ctx.contextMenus, 'open')
     await b.runtime.sessions.setProjection(ROOT, 'workingDirectory', '/proj/.agents/worktrees/w')
     await injected.openFile('src/a.ts')
     expect(b.sidebarRight.openResource).toHaveBeenLastCalledWith('dsh-resource://file/session/root-1/.agents/worktrees/w/src/a.ts')
+    expect(injected.resolveFilePath('src/a.ts')).toBe('/proj/.agents/worktrees/w/src/a.ts')
+    await b.runtime.sessions.setProjection(ROOT, 'workingDirectory', null)
+    expect(injected.resolveFilePath('file.ts')).toBe('/proj/file.ts')
+    await b.runtime.sessions.setProjection(ROOT, 'workingDirectory', '/proj/.agents/worktrees/w')
+
     // A leading `./` names the same file, so the Sidebar reuses its tab.
     await injected.openFile('./src/a.ts')
     expect(b.sidebarRight.openResource).toHaveBeenLastCalledWith('dsh-resource://file/session/root-1/.agents/worktrees/w/src/a.ts')
@@ -515,12 +525,16 @@ describe('Chat inject API', () => {
     expect(flow.injected.hooks.connectionState).toBe(b.runtime.ctx.get('connection')!.state)
     expect(flow.injected.hooks.presentation).toBe(injected.hooks.presentation)
 
-    expect(injected.fileMentions(owner)).toBeUndefined()
+    const entry = b.runtime.slots.entries('conversation.chat.node').find(entry => entry.options.key === 'assistant-step')!
+    const assistant = entry.inject!(ROOT as never)
+    const fileMentions = assistant.fileMentions as AssistantNodeInjected['fileMentions']
+    const getFileTriggerProps = vi.fn(() => ({}))
+    expect(fileMentions(owner, getFileTriggerProps)).toBeUndefined()
     const mentions = { resolve: vi.fn() } as never
     const forClosing = vi.fn(() => mentions)
     b.runtime.ctx.provide('chatFileMentions', { forClosing } as never)
-    expect(injected.fileMentions(owner)).toBe(mentions)
-    expect(forClosing).toHaveBeenCalledWith(owner, ROOT)
+    expect(fileMentions(owner, getFileTriggerProps)).toBe(mentions)
+    expect(forClosing).toHaveBeenCalledWith(owner, ROOT, getFileTriggerProps)
 
     expect(injected.chatScroll.read()).toBeNull()
     const position = { anchorKey: 'node-1', anchorTop: 4, scrollTop: 12 }
diff --git a/packages/client/ui-chat/tests/chat-apply.client.spec.tsx b/packages/client/ui-chat/tests/chat-apply.client.spec.tsx
index ab256ad15b..3e61dce8bf 100644
--- a/packages/client/ui-chat/tests/chat-apply.client.spec.tsx
+++ b/packages/client/ui-chat/tests/chat-apply.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { describe, expect, it, onTestFinished, vi } from 'vitest'
 import { act, fireEvent, render } from '@testing-library/react'
@@ -75,6 +76,8 @@ async function bench() {
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
   runtime.slots.installLocale(locale)
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   await runtime.root.declare({
     'main': { kind: 'keyed', scope: 'root' },
     'shell.overlay': { kind: 'list', scope: 'root' },
@@ -152,6 +155,8 @@ describe('Chat apply wiring', () => {
     const view = b.runtime.slots.entries('conversation.view')[0]
     const flow = b.runtime.slots.entries('conversation.chat.flow')[0]
     const assistant = b.runtime.slots.entries('conversation.chat.node').find(entry => entry.options.key === 'assistant-step')
+    const user = b.runtime.slots.entries('conversation.chat.node').find(entry => entry.options.key === 'user')
+    const steering = b.runtime.slots.entries('conversation.chat.node').find(entry => entry.options.key === 'steering')
     const userContent = b.runtime.factoryOf('conversation.chat.user.content')
     expect(userContent).toMatchObject({ scope: 'session', locale: 'chat', component: UserContent })
     expect(userContent.children?.['conversation.chat.user.images']).toMatchObject({ kind: 'single', scope: 'session' })
@@ -163,6 +168,11 @@ describe('Chat apply wiring', () => {
     expect(view?.children?.['conversation.chat.message.images']).toBeUndefined()
     expect(view?.children?.['conversation.chat.user.images']).toBeUndefined()
     expect(flow?.children?.['conversation.chat.node']).toBeDefined()
+    expect(flow?.children?.['conversation.chat.user.before']).toBeUndefined()
+    expect(user?.children?.['conversation.chat.user.before']).toMatchObject({ kind: 'chain', scope: 'session' })
+    expect(steering).toBeDefined()
+    expect(steering?.children?.['conversation.chat.user.before']).toBeUndefined()
+    expect(b.runtime.slots.spec('conversation.chat.user.before')).toMatchObject({ kind: 'chain', scope: 'session' })
     expect(flow?.children?.['conversation.chat.message.images']).toBeUndefined()
     expect(flow?.children?.['conversation.chat.user.images']).toBeUndefined()
     expect(userContent.children?.['conversation.chat.message.images']).toBeUndefined()
@@ -172,6 +182,7 @@ describe('Chat apply wiring', () => {
     await b.chat.dispose()
     expect(b.runtime.slots.spec('conversation.chat.flow')).toBeUndefined()
     expect(b.runtime.slots.spec('conversation.chat.node')).toBeUndefined()
+    expect(b.runtime.slots.spec('conversation.chat.user.before')).toBeUndefined()
     expect(b.runtime.slots.spec('conversation.chat.message.images')).toBeUndefined()
     expect(b.runtime.slots.spec('conversation.chat.user.images')).toBeUndefined()
     expect(() => b.runtime.factoryOf('conversation.chat.user.content')).toThrow('no definition')
diff --git a/packages/client/ui-chat/tests/chat-branch-tails.client.spec.tsx b/packages/client/ui-chat/tests/chat-branch-tails.client.spec.tsx
index fa922ee1e1..574fe82df9 100644
--- a/packages/client/ui-chat/tests/chat-branch-tails.client.spec.tsx
+++ b/packages/client/ui-chat/tests/chat-branch-tails.client.spec.tsx
@@ -3,6 +3,7 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
 import { bindSnapshotSelector, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
 import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
 import type {
   ChatConversationViewNode, ConversationNode,
@@ -33,6 +34,11 @@ afterEach(() => {
 
 const t: ChatNodeViewProps['t'] = makeTranslate(zh, commonZh)
 const renderUserImages: Parameters<ReturnType<typeof createUserContentFixture>>[1] = () => null
+const userSlots: PropsRenderSlots<'conversation.chat.user.before'> = {
+  renderSlot: () => null,
+  renderSlotChain: (_key, _owner, opts) => opts?.fallback ?? null,
+  SessionProvider: ({ children }) => <>{children}</>,
+}
 let renderUserContent: ReturnType<typeof createUserContentFixture>
 beforeEach(() => { renderUserContent = createUserContentFixture() })
 const RETRY_ID = 'retry-fixture' as Extract<ConversationNode, { kind: 'model-retry' }>['retryId']
@@ -81,8 +87,9 @@ function MessageItem({ node, t: translate, referenceLabels, skillNames }: Messag
   }
   switch (node.kind) {
     case 'user':
+      return <UserMessageNodeView {...props as ChatNodeViewProps<'user'>} {...userSlots} />
     case 'steering':
-      return <UserMessageNodeView {...props as ChatNodeViewProps<'user' | 'steering'>} />
+      return <UserMessageNodeView {...props as ChatNodeViewProps<'steering'>} renderSlotChain={() => null} />
     case 'context':
       return <ContextMessageNodeView {...props as ChatNodeViewProps<'context'>} />
     case 'compaction':
diff --git a/packages/client/ui-chat/tests/chat-view.client.spec.tsx b/packages/client/ui-chat/tests/chat-view.client.spec.tsx
index 412e0124e2..2bc8286e93 100644
--- a/packages/client/ui-chat/tests/chat-view.client.spec.tsx
+++ b/packages/client/ui-chat/tests/chat-view.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 
 import type { ProcessGroupData } from '../src/client/contract/process-groups.ts'
 import type { InboxState } from '@deepseek-ai/dsh-agent/types'
@@ -7,9 +8,10 @@ import type { GlobalStandardProps, PropsRenderFactories, PropsRenderSlots } from
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, fireEvent, render, screen, waitFor, within } from '@testing-library/react'
 import { useEffect, useMemo } from 'react'
+import { useMarkdownDelegate, type MarkdownMenuTarget } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {
   AssistantMessageNode, ChatFlowHookContext, ChatFlowOwnerProps, ChatFlowSlotProps,
-  ChatNode, ChatNodeHookContext, ChatNodeOwnerProps, ChatSnapshot,
+  ChatNode, ChatNodeHookContext, ChatNodeOwnerProps, ChatSnapshot, UserBeforeOwnerProps,
   ChatViewSlotProps, CommandNode, CompactionSummaryNode, ContextMessageNode, ConversationNode,
   LegacyConversationSlice, ModelRetryNode, StartedToolCall, SteeringMessageNode,
   ToolCallBlock, ToolResultNode, TurnErrorNode, TurnMaxTokensNode,
@@ -264,7 +266,10 @@ declare const flowDispatch: PropsRenderSlots<'conversation.chat.flow'>['renderSl
 type NodeRenderer = typeof nodeDispatch<'conversation.chat.node'>
 type FlowRenderer = typeof flowDispatch<'conversation.chat.flow'>
 type ImageRenderer = (owner: MessageImagesOwnerProps) => React.ReactNode
-type HarnessStandardProps = ChatViewSlotProps & PropsRenderFactories
+declare const userChainDispatch: PropsRenderSlots<'conversation.chat.user.before'>['renderSlotChain']
+type UserChainRenderer = typeof userChainDispatch<'conversation.chat.user.before'>
+type UserChainState = { readonly renderer: UserChainRenderer | undefined }
+type HarnessStandardProps = ChatViewSlotProps & PropsRenderFactories & Pick<React.ComponentProps<typeof AssistantNodeView>, 'fileMentions'>
 
 function isImageOwner(owner: object): owner is MessageImagesOwnerProps {
   return 'images' in owner && Array.isArray(owner.images)
@@ -293,10 +298,22 @@ function HarnessChatFlow({ standard, owner, hookContext, renderSlot, useConnecti
     useGroupHeaderAction: CHAT_FLOW_INJECT.hooks.groupHeaderAction(standard, hookContext),
   }), [standard, hookContext])
   const { renderSlot: _rootRenderSlot, __renders: _rootRenders, ...shared } = standard
-  return <ChatFlow {...shared} {...owner} {...hooks} renderSlot={renderSlot} useConnectionState={useConnectionState} />
+  return <ChatFlow {...shared} {...owner} {...hooks} renderSlot={renderSlot}
+    useConnectionState={useConnectionState} />
 }
 
-function HarnessChatNode({ standard, owner, hookContext, usePerformanceUsage, toolOwners, fallback, renderAssistantSlot }: {
+function HarnessUserOrigin({ useRenderer, owner, options }: {
+  readonly useRenderer: SnapshotSelectorHook<UserChainState>
+  readonly owner: UserBeforeOwnerProps
+  readonly options: Parameters<UserChainRenderer>[2]
+}) {
+  const renderer = useRenderer(value => value.renderer)
+  return renderer?.('conversation.chat.user.before', owner, options) ?? options?.fallback ?? null
+}
+
+function HarnessChatNode({
+  standard, owner, hookContext, usePerformanceUsage, toolOwners, fallback, renderAssistantSlot, renderUserChain,
+}: {
   readonly standard: HarnessStandardProps
   readonly owner: RoutedChatNodeOwner
   readonly hookContext: ChatNodeHookContext
@@ -304,6 +321,7 @@ function HarnessChatNode({ standard, owner, hookContext, usePerformanceUsage, to
   readonly toolOwners: ToolOwner[]
   readonly fallback: React.ReactNode
   readonly renderAssistantSlot: React.ComponentProps<typeof AssistantNodeView>['renderSlot']
+  readonly renderUserChain: PropsRenderSlots<'conversation.chat.user.before'>['renderSlotChain']
 }) {
   const hooks = useMemo(() => ({
     useTurnData: CHAT_NODE_INJECT.hooks.turnData(standard, hookContext),
@@ -314,9 +332,9 @@ function HarnessChatNode({ standard, owner, hookContext, usePerformanceUsage, to
   const nodeProps = { ...shared, ...owner, ...hooks }
   switch (owner.node.kind) {
     case 'user':
-      return <UserMessageNodeView {...nodeProps} node={owner.node} />
+      return <UserMessageNodeView {...nodeProps} node={owner.node} renderSlotChain={renderUserChain} />
     case 'steering':
-      return <UserMessageNodeView {...nodeProps} node={owner.node} />
+      return <UserMessageNodeView {...nodeProps} node={owner.node} renderSlotChain={() => null} />
     case 'context':
       return <ContextMessageNodeView {...nodeProps} node={owner.node} />
     case 'assistant-step':
@@ -421,9 +439,11 @@ function makeHarness(
   const collapseTiming = createSnapshotStore<CollapseTiming>('completion')
   const foldedReplies = createSnapshotStore<FoldedReplies>('all')
   const performanceUsage = createSnapshotStore<'compact' | 'detailed'>('detailed')
+  const originRenderer = createSnapshotStore<UserChainState>({ renderer: undefined })
   const t = makeTranslate(zh, commonZh)
   const toolOwners: ToolOwner[] = []
   const usePerformanceUsage = bindSnapshotSelector(performanceUsage)
+  const useOriginRenderer = bindSnapshotSelector(originRenderer)
   let nodeSlotOverride: NodeRenderer | undefined
   let imageSlotOverride: ImageRenderer | undefined
   const renderImages = (name: string, owner: object, options?: { fallback?: React.ReactNode }) => {
@@ -438,7 +458,8 @@ function makeHarness(
     if (nodeSlotOverride !== undefined) return nodeSlotOverride(key, owner, opts)
     return <HarnessChatNode standard={props} owner={owner}
       hookContext={opts.hookContext} usePerformanceUsage={usePerformanceUsage}
-      toolOwners={toolOwners} fallback={opts.fallback} renderAssistantSlot={renderAssistantSlot} />
+      toolOwners={toolOwners} fallback={opts.fallback} renderAssistantSlot={renderAssistantSlot}
+      renderUserChain={renderUserChain} />
   }
   const renderFlowSlot: ChatFlowSlotProps['renderSlot'] = (key: string, owner: object, opts?: {
     fallback?: React.ReactNode
@@ -449,6 +470,10 @@ function makeHarness(
     }
     throw new Error(`Undeclared flow child: ${key}`)
   }
+  const renderUserChain: PropsRenderSlots<'conversation.chat.user.before'>['renderSlotChain'] = (key, owner, opts) => {
+    if (key !== 'conversation.chat.user.before') throw new Error(`Undeclared user chain: ${key}`)
+    return <HarnessUserOrigin useRenderer={useOriginRenderer} owner={owner as UserBeforeOwnerProps} options={opts} />
+  }
   const renderFactorySlot: PropsRenderFactories['renderFactorySlot'] = (name, owner) => {
     if (name !== 'conversation.chat.user.content') throw new Error(`Unexpected Chat Factory: ${name}`)
     return renderUserContent(owner as UserContentInput, renderImages, props.t)
@@ -469,6 +494,7 @@ function makeHarness(
   const SessionProviderStub: ChatViewSlotProps['SessionProvider'] = ({ children }) => <>{children}</>
   const props: HarnessStandardProps = {
     fileDrag,
+    resolveFilePath: vi.fn((path: string) => path),
     renderFactorySlot,
     usePanelInfo: selector => selector({ activePanelId: null }),
     sessionId: SID,
@@ -482,6 +508,7 @@ function makeHarness(
     useTrajectory: (() => { throw new Error('unused') }),
     useSessions: emptySessions(),
     useSessionRetainInfo: () => undefined,
+    useContextMenu: contextMenuHook(),
     useResource,
     useSessionStatus: bindSnapshotSelector(
       createSnapshotStore<SessionStatusSnapshot>(new Map()),
@@ -561,6 +588,7 @@ function makeHarness(
     setFoldedReplies: (replies: FoldedReplies) => { foldedReplies.set(replies) },
     setNodeRenderer: (renderer: NodeRenderer) => { nodeSlotOverride = renderer },
     setImageRenderer: (renderer: ImageRenderer) => { imageSlotOverride = renderer },
+    setOriginRenderer: (renderer: UserChainRenderer | undefined) => { originRenderer.set({ renderer }) },
   }
 }
 
@@ -682,6 +710,41 @@ function formatRunDuration(ms: number, t: Parameters<typeof durationParts>[1]):
 
 describe('Chat node rendering', () => {
 
+  it('adapts Markdown targets with the original Session and resolves file paths when each gesture begins', () => {
+    const h = makeHarness()
+    const opened = vi.fn()
+    let directory = '/workspace'
+    h.props.useContextMenu = contextMenuHook(opened)
+    h.props.resolveFilePath = path => `${directory}/${path}`
+    const targets: MarkdownMenuTarget[] = [
+      { kind: 'file', path: 'src/a.ts', line: 24 },
+      { kind: 'file', path: 'src/b.ts' },
+      { kind: 'url', url: 'https://example.com/page' },
+      { kind: 'image', url: 'blob:remote' },
+      { kind: 'image', url: 'blob:local', path: 'image.svg', name: 'Image', mediaType: 'image/svg+xml' },
+    ]
+    function References() {
+      const { getTriggerProps } = useMarkdownDelegate()
+      return <>{targets.map((target, index) => <button key={index} {...getTriggerProps!(target)}>{index}</button>)}</>
+    }
+    const view = render(<ChatView {...h.props} renderSlot={() => <References />} />)
+    directory = '/workspace/moved'
+    for (const [index, target] of targets.entries()) {
+      const button = view.getByRole('button', { name: String(index) })
+      button.getBoundingClientRect = () => new DOMRect(10, 20, 30, 40)
+      fireEvent.contextMenu(button, { clientX: 50, clientY: 60 })
+      const { kind, ...value } = target
+      const expected = { kind, value: {
+        sessionId: SID, ...value, ...'path' in target ? { path: `${directory}/${target.path}` } : {},
+      } }
+      expect(opened).toHaveBeenLastCalledWith(expected, { x: 50, y: 60 })
+      fireEvent.keyDown(button, { key: 'F10', shiftKey: true })
+      expect(opened).toHaveBeenLastCalledWith(expected, { x: 10, y: 60 })
+    }
+    expect(opened).toHaveBeenCalledTimes(10)
+    expect(h.openFile).not.toHaveBeenCalled()
+  })
+
   it('opens Markdown references to unmodified files with line navigation', () => {
     const h = makeHarness({
       nodes: [user(1, 'explain'), assistant(2, '[source](src/index.ts#L24-L30)', 1)],
@@ -705,13 +768,18 @@ describe('Chat node rendering', () => {
       ],
       turnEnds: new Map([[1, 4]]),
     })
-    h.props.fileMentions = owner => ({
+    const opened = vi.fn()
+    let directory = '/workspace'
+    h.props.useContextMenu = contextMenuHook(opened)
+    h.props.resolveFilePath = path => `${directory}/${path}`
+    h.props.fileMentions = (owner, getFileTriggerProps) => ({
       resolve: (value) => {
         if (value !== 'report.html') return undefined
         return {
           open: () => { void h.openFile(`for-seq-${String(owner.seq)}/site/report.html`) },
           label: '打开 site/report.html',
           title: 'site/report.html',
+          contextMenuProps: getFileTriggerProps('site/report.html'),
         }
       },
     })
@@ -722,6 +790,17 @@ describe('Chat node rendering', () => {
     expect(mentions).toHaveLength(1)
     const mention = view.getByRole('button', { name: '打开 site/report.html' })
     expect(mention.getAttribute('title')).toBe('site/report.html')
+    fireEvent.contextMenu(mention, { clientX: 12, clientY: 34 })
+    expect(opened).toHaveBeenLastCalledWith({
+      kind: 'file', value: { sessionId: SID, path: '/workspace/site/report.html' },
+    }, { x: 12, y: 34 })
+    directory = '/workspace/moved'
+    fireEvent.keyDown(mention, { key: 'F10', shiftKey: true })
+    expect(opened).toHaveBeenLastCalledWith({
+      kind: 'file', value: { sessionId: SID, path: '/workspace/moved/site/report.html' },
+    }, { x: 0, y: 0 })
+    expect(opened).toHaveBeenCalledTimes(2)
+    expect(h.openFile).not.toHaveBeenCalled()
     fireEvent.click(mention)
     // The vocabulary was built from the closing message's own owner currency.
     expect(h.openFile).toHaveBeenCalledWith('for-seq-4/site/report.html')
@@ -1848,6 +1927,59 @@ describe('ChatView', () => {
       ])
   })
 
+  it('updates the user-before chain without remounting message content or decorating steering', () => {
+    const h = makeHarness({ nodes: [userInTurn(1, 'question', 1), steering(2, 'direction', 1)] })
+    const origin = vi.fn<UserChainRenderer>((_key, owner) => <span data-test-origin="">{owner.kind}</span>)
+    const empty = vi.fn<UserChainRenderer>(() => null)
+    const view = render(<h.ChatView {...h.props} />)
+    const userRow = view.container.querySelector<HTMLElement>('[data-chat-flow-kind="user"]')!
+    const steeringRow = view.container.querySelector<HTMLElement>('[data-chat-flow-kind="steering"]')!
+    expect(userRow).not.toBeNull()
+    expect(steeringRow).not.toBeNull()
+    const bubble = userRow.querySelector('[data-message-bubble]')
+    const text = within(userRow).getByText('question').firstChild
+    const copy = within(userRow).getByRole('button', { name: '复制' })
+    const actions = copy.closest('[data-clock]')
+    const steeringBubble = steeringRow.querySelector('[data-message-bubble]')
+    const steeringText = within(steeringRow).getByText('direction').firstChild
+    const steeringCopy = within(steeringRow).getByRole('button', { name: '复制' })
+    expect(bubble).not.toBeNull()
+    expect(text?.nodeType).toBe(Node.TEXT_NODE)
+    expect(actions).not.toBeNull()
+    expect(steeringBubble).not.toBeNull()
+    expect(steeringText?.nodeType).toBe(Node.TEXT_NODE)
+    expect(origin).not.toHaveBeenCalled()
+    expect(view.container.querySelector('[data-test-origin]')).toBeNull()
+
+    for (const renderer of [origin, empty, undefined]) {
+      act(() => { h.setOriginRenderer(renderer) })
+
+      expect(view.container.querySelector('[data-chat-flow-kind="user"]')).toBe(userRow)
+      expect(userRow.querySelector('[data-message-bubble]')).toBe(bubble)
+      expect(within(userRow).getByText('question').firstChild).toBe(text)
+      expect(within(userRow).getByRole('button', { name: '复制' })).toBe(copy)
+      expect(copy.closest('[data-clock]')).toBe(actions)
+      expect(view.container.querySelector('[data-chat-flow-kind="steering"]')).toBe(steeringRow)
+      expect(steeringRow.querySelector('[data-message-bubble]')).toBe(steeringBubble)
+      expect(within(steeringRow).getByText('direction').firstChild).toBe(steeringText)
+      expect(within(steeringRow).getByRole('button', { name: '复制' })).toBe(steeringCopy)
+      expect(steeringRow.querySelector('[data-test-origin]')).toBeNull()
+      const label = userRow.querySelector('[data-test-origin]')
+      if (renderer === origin) {
+        expect(label?.textContent).toBe('user')
+        expect(label!.compareDocumentPosition(bubble!) & Node.DOCUMENT_POSITION_FOLLOWING).not.toBe(0)
+      } else {
+        expect(label).toBeNull()
+      }
+    }
+    expect(origin).toHaveBeenCalledExactlyOnceWith(
+      'conversation.chat.user.before', { source: null, kind: 'user' }, { fallback: null },
+    )
+    expect(empty).toHaveBeenCalledExactlyOnceWith(
+      'conversation.chat.user.before', { source: null, kind: 'user' }, { fallback: null },
+    )
+  })
+
   it('renders Host-pending steering at the flow tail and hands off to the durable node', withClock(2_000, () => {
     const writeText = vi.fn().mockResolvedValue(undefined)
     Object.defineProperty(navigator, 'clipboard', {
@@ -4622,3 +4754,21 @@ const fileDrag = { prepare: vi.fn(async () => ({ start: () => true, release: ()
 it('formats Portuguese elapsed minutes with numeric units', () => {
   expect(formatRunDuration(90_000, key => pt[key])).toBe('1m 30s')
 })
+
+it('does not infer menu targets from links or data attributes inside a plugin flow slot', () => {
+  const h = makeHarness()
+  const custom = vi.fn()
+  const view = render(<ChatView {...h.props} renderSlot={() => <>
+    <a href="https://example.com/plugin">Plugin link</a>
+    <button data-file-path="/plugin/private.txt">Undeclared file</button>
+    <button onContextMenu={(event) => {
+      event.preventDefault()
+      custom()
+    }}>Custom target</button>
+  </>} />)
+  expect(fireEvent.contextMenu(view.getByRole('link', { name: 'Plugin link' }))).toBe(true)
+  expect(fireEvent.contextMenu(view.getByRole('button', { name: 'Undeclared file' }))).toBe(true)
+  fireEvent.contextMenu(view.getByRole('button', { name: 'Custom target' }))
+  expect(custom).toHaveBeenCalledOnce()
+  expect(h.props.resolveFilePath).not.toHaveBeenCalled()
+})
diff --git a/packages/client/ui-chat/tests/config.host.spec.ts b/packages/client/ui-chat/tests/config.host.spec.ts
index e3996ec43d..4cd8dd8651 100644
--- a/packages/client/ui-chat/tests/config.host.spec.ts
+++ b/packages/client/ui-chat/tests/config.host.spec.ts
@@ -57,15 +57,15 @@ describe('ui-chat Host settings', () => {
   it('validates folded replies and restores the saved choice', async () => {
     const ctx = new Context()
     const configuration = await liveConfig(ctx, { Config, apply })
-    expect(plainConfig(configuration.fiber.config)).toMatchObject({ foldedReplies: 'all' })
+    expect(plainConfig(configuration.fiber.effectiveConfig)).toMatchObject({ foldedReplies: 'all' })
     await configuration.update({ foldedReplies: 'final' })
-    const saved = plainConfig(configuration.fiber.config)
+    const saved = plainConfig(configuration.fiber.effectiveConfig)
     if (typeof saved !== 'object' || saved === null) throw new Error('expected saved configuration object')
     expect(saved).toMatchObject({ foldedReplies: 'final' })
     await expect(configuration.update({ foldedReplies: 'none' })).rejects.toThrow()
     await configuration.fiber.dispose()
     const restored = await liveConfig(ctx, { Config, apply }, saved)
-    expect(plainConfig(restored.fiber.config)).toMatchObject({ foldedReplies: 'final' })
+    expect(plainConfig(restored.fiber.effectiveConfig)).toMatchObject({ foldedReplies: 'final' })
     await restored.fiber.dispose()
   })
 
diff --git a/packages/client/ui-chat/tests/context-menu.client.spec.tsx b/packages/client/ui-chat/tests/context-menu.client.spec.tsx
new file mode 100644
index 0000000000..545538b18c
--- /dev/null
+++ b/packages/client/ui-chat/tests/context-menu.client.spec.tsx
@@ -0,0 +1,29 @@
+// @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
+import { cleanup, fireEvent, render } from '@testing-library/react'
+import { afterEach, expect, it, vi } from 'vitest'
+import { MarkdownDelegateProvider, MarkdownText } from '@deepseek-ai/dsh-client-ui-primitives'
+
+afterEach(cleanup)
+
+it('leaves undeclared plugin links alone and binds only explicitly rendered Markdown targets', () => {
+  const open = vi.fn()
+  const custom = vi.fn()
+  const view = render(<MarkdownDelegateProvider getTriggerProps={contextMenuHook(open)().getTriggerProps} openFile={() => {}}>
+    <a href="https://example.com/plugin">Plugin link</a>
+    <MarkdownText text="[File](docs/file.ts#L42)" labels={{ code: { copyLabel: 'Copy', copiedLabel: 'Copied' }, footnotes: 'Footnotes' }} />
+    <button {...contextMenuHook(custom)().getTriggerProps({ kind: 'pluginDocument', id: 'one' })}>Plugin target</button>
+  </MarkdownDelegateProvider>)
+  expect(fireEvent.contextMenu(view.getByRole('link', { name: 'Plugin link' }))).toBe(true)
+  expect(open).not.toHaveBeenCalled()
+  const file = view.getByRole('button', { name: 'File' })
+  fireEvent.contextMenu(file, { clientX: 40, clientY: 50 })
+  expect(open).toHaveBeenLastCalledWith({ kind: 'file', path: 'docs/file.ts', line: 42 }, { x: 40, y: 50 })
+  file.getBoundingClientRect = () => new DOMRect(30, 40, 100, 20)
+  fireEvent.keyDown(file, { key: 'F10', shiftKey: true })
+  expect(open).toHaveBeenLastCalledWith({ kind: 'file', path: 'docs/file.ts', line: 42 }, { x: 30, y: 60 })
+  expect(document.activeElement).toBe(file)
+  fireEvent.contextMenu(view.getByRole('button', { name: 'Plugin target' }), { clientX: 70, clientY: 80 })
+  expect(custom).toHaveBeenCalledExactlyOnceWith({ kind: 'pluginDocument', id: 'one' }, { x: 70, y: 80 })
+  expect(open).toHaveBeenCalledTimes(2)
+})
diff --git a/packages/client/ui-chat/tests/quota-notice.client.spec.tsx b/packages/client/ui-chat/tests/quota-notice.client.spec.tsx
index c7f67f3505..5e0f5cd8e3 100644
--- a/packages/client/ui-chat/tests/quota-notice.client.spec.tsx
+++ b/packages/client/ui-chat/tests/quota-notice.client.spec.tsx
@@ -3,6 +3,7 @@
  * that outlives the Chat panel, and history scrollback never does.
  */
 // @vitest-environment jsdom
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { afterEach, describe, expect, it } from 'vitest'
 import { act, screen } from '@testing-library/react'
@@ -68,6 +69,8 @@ async function bench() {
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
   runtime.slots.installLocale(locale)
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   await runtime.declare({
     'shell.overlay': { kind: 'list', scope: 'root' },
     'conversation.approval.detail': { kind: 'single', scope: 'session' },
diff --git a/packages/client/ui-chat/tests/transcript-view-row.client.spec.tsx b/packages/client/ui-chat/tests/transcript-view-row.client.spec.tsx
index f67f18eb92..ca6d67f0f3 100644
--- a/packages/client/ui-chat/tests/transcript-view-row.client.spec.tsx
+++ b/packages/client/ui-chat/tests/transcript-view-row.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
 import type { SessionListState } from '@deepseek-ai/dsh-api-session-controller/client'
@@ -50,6 +51,7 @@ function mount(mode: TranscriptViewMode = 'standard', dictionary: typeof en | ty
     useSessionRetainInfo: () => undefined,
     useResource,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useTranscriptView: bindSnapshotSelector(source),
     useCollapseTiming: bindSnapshotSelector(collapseTiming),
     useFoldedReplies: bindSnapshotSelector(foldedReplies),
diff --git a/packages/client/ui-chat/tests/user-content.client.spec.tsx b/packages/client/ui-chat/tests/user-content.client.spec.tsx
index 1a93864a41..38a786beee 100644
--- a/packages/client/ui-chat/tests/user-content.client.spec.tsx
+++ b/packages/client/ui-chat/tests/user-content.client.spec.tsx
@@ -1,3 +1,4 @@
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 // @vitest-environment jsdom
 import { useState, type ReactNode } from 'react'
 import { afterEach, describe, expect, it, onTestFinished, vi } from 'vitest'
@@ -54,6 +55,7 @@ async function bench() {
   const openFile = vi.fn<(path: string) => void>()
   const openSkill = vi.fn<(name: string) => void>()
   await runtime.mount({ inject: ['slots'], apply: (ctx) => {
+    ctx.slots.provideRoot({ props: { useContextMenu: contextMenuHook() } })
     const userText = new UserTextRegistry(ctx)
     for (const rule of [
       sessionReferenceRule, fileReferenceRule, folderReferenceRule, skillReferenceRule,
@@ -75,7 +77,7 @@ async function bench() {
     ctx.slots.register({ name: 'conversation.user.text.node', key: 'text' }, PlainUserText)
     ctx.slots.register({ name: 'conversation.user.text.node', key: 'session' }, SessionReference)
     ctx.slots.register({ name: 'conversation.user.text.node', key: 'file', locale: 'reference',
-      inject: () => ({ openFile }) }, FileReference)
+      inject: () => ({ openFile, resolveFilePath: path => path }) }, FileReference)
     ctx.slots.register({ name: 'conversation.user.text.node', key: 'folder' }, FolderReference)
     ctx.slots.register({ name: 'conversation.user.text.node', key: 'skill', inject: () => ({ openSkill }) }, SkillReference)
     ctx.slots.inject('conversation.chat.user.images', () => ctx.slots.register({ name: 'conversation.chat.user.images' }, function ImageProbe(props) {
diff --git a/packages/client/ui-chat/tests/user-origin-slot.client.spec.tsx b/packages/client/ui-chat/tests/user-origin-slot.client.spec.tsx
new file mode 100644
index 0000000000..7a522be8ed
--- /dev/null
+++ b/packages/client/ui-chat/tests/user-origin-slot.client.spec.tsx
@@ -0,0 +1,139 @@
+// @vitest-environment jsdom
+/**
+ * The official user renderer owns the source-decoration chain above its bubble.
+ * Steering rows do not render the chain; changing its occupant preserves the
+ * existing message content and actions.
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { cleanup, render } from '@testing-library/react'
+import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
+import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
+import type {
+  ChatConversationViewNode, SteeringMessageNode, UserMessageNode,
+} from '@deepseek-ai/dsh-client-ui-chat/client'
+import type { ChatNodeViewProps, UserContentInput } from '../src/client/contract/slots.ts'
+import { UserMessageNodeView } from '../src/client/chat/MessageItem.tsx'
+import { zh } from '../src/client/locale.ts'
+import { createUserContentFixture } from './user-content-component-fixture.tsx'
+import { unusedImageLoader } from './reasoning-component-fixture.tsx'
+
+afterEach(cleanup)
+
+const t: ChatNodeViewProps['t'] = makeTranslate(zh, commonZh)
+type UserSlots = PropsRenderSlots<'conversation.chat.user.before'>
+const userSlots: UserSlots = {
+  renderSlot: () => null,
+  renderSlotChain: (_key, _owner, opts) => opts?.fallback ?? null,
+  SessionProvider: ({ children }) => <>{children}</>,
+}
+
+/** One durable source, unread by Chat itself. */
+const SHARED = { kind: 'user', principal: { kind: 'share-viewer', shareId: 'share-1', actor: { subjectId: 'subject-42' } } }
+
+let renderUserContent: ReturnType<typeof createUserContentFixture>
+beforeEach(() => { renderUserContent = createUserContentFixture() })
+
+const renderUserFactory: ChatNodeViewProps['renderFactorySlot'] = (name, input) => {
+  if (name !== 'conversation.chat.user.content') throw new Error(`Unexpected Chat Factory: ${name}`)
+  return renderUserContent(input as UserContentInput, () => null, t)
+}
+
+function viewProps(data: UserMessageNode): ChatNodeViewProps<'user'>
+function viewProps(data: SteeringMessageNode): ChatNodeViewProps<'steering'>
+function viewProps(data: UserMessageNode | SteeringMessageNode): ChatNodeViewProps<'user' | 'steering'> {
+  const node = {
+    key: `fixture:${data.kind}:${String(data.seq)}`,
+    id: String(data.seq),
+    kind: data.kind,
+    target: 'chat',
+    anchorSeq: data.seq,
+    location: { kind: 'session' },
+    visibility: 'visible',
+    data,
+  } as ChatConversationViewNode
+  const props: Partial<Omit<ChatNodeViewProps, 'node'>> & { node: ChatConversationViewNode } = {
+    node, t, loadImage: unusedImageLoader, renderFactorySlot: renderUserFactory, openFile: vi.fn(),
+  }
+  return props as ChatNodeViewProps<'user' | 'steering'>
+}
+
+const userData: UserMessageNode = {
+  kind: 'user',
+  seq: 7,
+  time: 7_000,
+  content: [{ type: 'text', text: 'hello' }] as never,
+  source: SHARED,
+}
+
+const steeringData: SteeringMessageNode = {
+  kind: 'steering',
+  messageId: 'fixture-steering' as SteeringMessageNode['messageId'],
+  seq: 8,
+  time: 8_000,
+  content: [{ type: 'text', text: 'steer' }] as never,
+  source: SHARED,
+}
+
+describe('official user renderer origin seat', () => {
+  it('renders the source chain above the bubble and passes the durable source', () => {
+    const renderSlotChain = vi.fn(() => <span data-test-origin="">来自会话分享</span>)
+    const view = render(<UserMessageNodeView {...viewProps(userData)} {...userSlots} renderSlotChain={renderSlotChain} />)
+    const row = view.container.firstElementChild as HTMLElement
+    const origin = row.querySelector('[data-test-origin]')
+    const bubble = row.querySelector('[data-message-bubble]')
+
+    expect(renderSlotChain).toHaveBeenCalledExactlyOnceWith(
+      'conversation.chat.user.before', { source: SHARED, kind: 'user' }, { fallback: null },
+    )
+    expect(origin).not.toBeNull()
+    expect(bubble).not.toBeNull()
+    expect(row.firstElementChild).toBe(origin)
+    expect(origin!.compareDocumentPosition(bubble!) & Node.DOCUMENT_POSITION_FOLLOWING).not.toBe(0)
+  })
+
+  it('preserves the bubble, text and actions across empty and occupied chain output', () => {
+    const props = viewProps(userData)
+    const absent = vi.fn(() => null)
+    const occupied = vi.fn(() => <span data-test-origin="">来自会话分享</span>)
+    const empty = vi.fn(() => null)
+    const view = render(<UserMessageNodeView {...props} {...userSlots} renderSlotChain={absent} />)
+    const row = view.container.firstElementChild
+    const bubble = view.container.querySelector('[data-message-bubble]')
+    const text = view.getByText('hello').firstChild
+    const copy = view.getByRole('button', { name: '复制' })
+    const actions = copy.closest('[data-clock]')
+    expect(bubble).not.toBeNull()
+    expect(text?.nodeType).toBe(Node.TEXT_NODE)
+    expect(actions).not.toBeNull()
+    expect(view.container.querySelector('[data-test-origin]')).toBeNull()
+
+    for (const renderSlotChain of [occupied, empty, absent]) {
+      view.rerender(<UserMessageNodeView {...props} {...userSlots} renderSlotChain={renderSlotChain} />)
+      expect(view.container.firstElementChild).toBe(row)
+      expect(view.container.querySelector('[data-message-bubble]')).toBe(bubble)
+      expect(view.getByText('hello').firstChild).toBe(text)
+      expect(view.getByRole('button', { name: '复制' })).toBe(copy)
+      expect(copy.closest('[data-clock]')).toBe(actions)
+      expect(view.container.querySelector('[data-test-origin]') !== null).toBe(renderSlotChain === occupied)
+    }
+  })
+
+  it('asks the chain only for the user row beside a steering row', () => {
+    const renderSlotChain = vi.fn(() => <span data-test-origin="" />)
+    const view = render(<>
+      <UserMessageNodeView {...viewProps(userData)} {...userSlots} renderSlotChain={renderSlotChain} />
+      <UserMessageNodeView {...viewProps(steeringData)} renderSlotChain={() => null} />
+    </>)
+    const steeringRow = view.container.lastElementChild!
+    expect(steeringRow.textContent).toContain('steer')
+
+    expect(renderSlotChain).toHaveBeenCalledExactlyOnceWith(
+      'conversation.chat.user.before', { source: SHARED, kind: 'user' }, { fallback: null },
+    )
+    expect(view.container.querySelectorAll('[data-test-origin]')).toHaveLength(1)
+    expect(steeringRow.querySelector('[data-test-origin]')).toBeNull()
+    expect(view.container.querySelector('[data-chat-steering-batch]')).toBeNull()
+  })
+})
diff --git a/packages/client/ui-chat/tsconfig.client.json b/packages/client/ui-chat/tsconfig.client.json
index 42e4b6003c..4040aacd08 100644
--- a/packages/client/ui-chat/tsconfig.client.json
+++ b/packages/client/ui-chat/tsconfig.client.json
@@ -122,6 +122,9 @@
     },
     {
       "path": "../../core/tool-executor-ptc"
+    },
+    {
+      "path": "../ui-context-menu"
     }
   ],
   "exclude": [
diff --git a/packages/client/ui-commands/package.json b/packages/client/ui-commands/package.json
index 9fec901af2..9fedd2d491 100644
--- a/packages/client/ui-commands/package.json
+++ b/packages/client/ui-commands/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-commands",
   "description": "Client command surface: global directory cache, '/' source, three command UI kinds, popupSelect registry",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-context-menu/README.i18n.yaml b/packages/client/ui-context-menu/README.i18n.yaml
new file mode 100644
index 0000000000..1f54beccbb
--- /dev/null
+++ b/packages/client/ui-context-menu/README.i18n.yaml
@@ -0,0 +1,40 @@
+# Bilingual-pair consistency record for README.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/client/ui-context-menu/README.md
+/:
+  en: c7a386986f8aa0d7
+  zh: a4bace64648d0a89
+/deepseek-ai-dsh-client-ui-context-menu:
+  en: f165f99dfbea7ed2
+  zh: 0f2835e7726dd0f5
+/deepseek-ai-dsh-client-ui-context-menu/summary:
+  en: 7d22e21395a76909
+  zh: e9f98068a4c5fde7
+/deepseek-ai-dsh-client-ui-context-menu/table-of-contents:
+  en: d152484eb41ac6b4
+  zh: 725b47765ee8f30b
+/deepseek-ai-dsh-client-ui-context-menu/use-this-package:
+  en: c84c65c7d24d51c3
+  zh: 98c8f40a326a8f0b
+/deepseek-ai-dsh-client-ui-context-menu/use-this-package/register-actions:
+  en: 11bea09005de2678
+  zh: d56e25d2d93022aa
+/deepseek-ai-dsh-client-ui-context-menu/understand-the-implementation:
+  en: 5b7717fad8457145
+  zh: 19a06fca8060cf62
+/deepseek-ai-dsh-client-ui-context-menu/further-exploration:
+  en: 6d538e70a88f070b
+  zh: f90577fe9c8d1799
+/deepseek-ai-dsh-client-ui-context-menu/model-experience:
+  en: bb3787b3201a6724
+  zh: e51cbb66f42a433d
+/deepseek-ai-dsh-client-ui-context-menu/model-experience/kv-cache-effect:
+  en: e5fe67ca0631f67a
+  zh: b26e6107f2638589
+/deepseek-ai-dsh-client-ui-context-menu/known-limitations-and-deferred-work:
+  en: ac1e5554e7f3109f
+  zh: c2df38df3b9ea4f2
+/deepseek-ai-dsh-client-ui-context-menu/known-limitations-and-deferred-work/dev-note:
+  en: e67f633dc6fe7773
+  zh: 6c5f9788c6536776
diff --git a/packages/client/ui-context-menu/README.md b/packages/client/ui-context-menu/README.md
new file mode 100644
index 0000000000..dff6ea78cc
--- /dev/null
+++ b/packages/client/ui-context-menu/README.md
@@ -0,0 +1,100 @@
+---
+description: "Add actions to right-click menus without importing a React component"
+kind: "package-reference"
+---
+
+# @deepseek-ai/dsh-client-ui-context-menu
+
+English | [中文](README.zh.md)
+
+## Summary
+
+Add actions to right-click menus without importing a React component. Targets retain the clicked Session, Workspace, file, directory, URL, image, or pane even when selection changes. Contributions can discover metadata asynchronously and disappear safely when their plugin unloads.
+
+## Table of Contents
+
+- [Use this package](#use-this-package)
+- [Understand the implementation](#understand-the-implementation)
+- [Further Exploration](#further-exploration)
+- [Model Experience](#model-experience)
+- [Known Limitations and Deferred Work](#known-limitations-and-deferred-work)
+- [Dev Note](#dev-note)
+
+-----
+
+<a id="use-this-package"></a>
+## Use this package
+
+The Web application bundle mounts this Client plugin. External Client plugins declare the package in `dsh.client.inject`, import its `/client` types, and inject the `contextMenus` service. `resolutionTimeoutMs` bounds each provider’s preparation (1000ms by default); timed-out providers are aborted and omitted with visible failure feedback.
+
+The plugin injects `useContextMenu` into every Slot scope through `ctx.slots.provideRoot`. Call `const { getTriggerProps } = useContextMenu()` once in the component and spread `getTriggerProps(target, handlers?)` onto each trigger. The factory is an ordinary function and can run in loops. It handles right-click, Shift+F10, the ContextMenu key, viewport coordinates, and focus without scrolling. Existing handlers run first; `preventDefault()` keeps their ownership and prevents duplicate handling by composed or nested bindings. Repeated, composing, and unrelated key events remain untouched. Pass `undefined` to retain native behavior, or a target resolver to read business state when the gesture begins. The resolved object is captured before focus changes. Plain children receive event props or a factory through props or an existing delegate; no additional React Context is needed. Special editors and canvases can call `ctx.contextMenus.open()` directly.
+
+### Register actions
+
+Call `ctx.effect(() => ctx.contextMenus.register({ id, target, order, resolve }))` in the contributing plugin. `resolve` receives the captured target and its cancellation signal; return localized actions with stable IDs, optional icons, disabled state, submenus, and execution callbacks. Contributions sort by `order`, then ID. Duplicate contribution IDs within one target family fail registration; duplicate action paths reject that provider’s result. IDs are encoded by segment before publication.
+
+An action’s optional `commandId` associates it with an existing shortcut command. The overlay subscribes to `ctx.shortcuts.catalog`, including configured, removed, and reset bindings; nested and footer actions use the same presentation. This association never dispatches the command: selection invokes only the action’s captured `run` callback. The menu plugin requires the `shortcuts` service.
+
+A contribution can declare `observe(target)` sources for permissions, membership, or localized labels. Source updates re-resolve that contribution against the same captured target and replace its callbacks; outdated asynchronous preparations are cancelled. Dismissal and plugin unload release every subscription.
+
+Extend `ContextMenuTargetMap` through declaration merging on `@deepseek-ai/dsh-client-ui-context-menu/client` for a new target family; `ContextMenuTarget` derives the `{ kind, value }` union from that map. Open a target with `ctx.contextMenus.open(target, { x, y })`. Keep target values as immutable JSON-compatible identifiers and metadata. Execution callbacks capture that value; they must recheck mutable resources before acting. New registrations participate in the next opening. Unregistering removes visible actions and cancels pending metadata.
+
+`ctx.contextMenus.resolve(target)` gives a separate occurrence for another renderer. Subscribe to its immutable action views, select a published ID, and dispose it when its owner closes. Views contain presentation fields only. Callbacks remain in the registry and execute at most once. Dismissal and replacement cancel metadata, but an action already selected owns its own execution and cancellation. Rejected providers and actions produce a persistent overlay toast; an action’s localized `failureLabel` supplies operation-specific recovery guidance.
+
+`ctx.contextMenus.notify(text, success, action?)` can attach a localized text action through the shared Toast. The action provides `label`, `run`, and `failureLabel`; clicking dismisses the toast before execution, and rejection reports its failure label. A dismissed or replaced toast cannot execute its action again.
+
+Shared popups wait for every contribution to settle or time out before appearing. A repeated gesture within four CSS pixels closes the same target; a farther gesture replaces it with a separate fade. `ready` gives custom renderers the same preparation point. Structured action icons align within each divider group; component contributions retain their own layout. Normal dismissal retains the popup for 80ms, replacement for 10ms; opening waits at least 20ms and fades in over 40ms. Reduced motion suppresses the fade.
+
+Actions carry `icon?: { key: string; src?: string }`. Register the matching glyph component with `ctx.slots.inject('contextMenu.icon', () => ctx.slots.register({ name: 'contextMenu.icon', key: 'my-plugin.action' }, Icon))`. The overlay dispatches `renderSlot` by that key for ordinary, nested, and footer actions; the component receives the captured `icon` metadata, including an optional image URL. Registrations follow the contributing plugin and menu Slot declaration lifetimes. Action views contain no JSX nodes.
+
+The optional keyed `contextMenu.content` Slot hosts component contributions. Existing Session and tab Slot names remain owned by their feature adapters. Keyboard context keys and Shift+F10 use the focused trigger’s lower edge. `afterContent` places a data action after those rows; ordinary actions render before them.
+
+-----
+
+<a id="understand-the-implementation"></a>
+## Understand the implementation
+
+<details>
+<summary>Implementation internals — click to expand</summary>
+
+The registry separates resolution and callback lifetimes from presentation. The shared overlay uses the existing Menu primitive for keyboard movement, focus return, dismissal, submenus, and viewport positioning. [Registry](src/client/registry.ts) owns cancellation and ordering; [target and action types](src/client/types.ts) own the public fields.
+
+</details>
+
+-----
+
+<a id="further-exploration"></a>
+## Further Exploration
+
+- [Slots](../ui-slots/README.md) — component contributions.
+- [File actions](../ui-file-actions/README.md) — original content transfer.
+- [Open in app](../ui-open-in-app/README.md) — shipped resource actions.
+
+-----
+
+<a id="model-experience"></a>
+## Model Experience
+
+None, as popup presentation and registration do not construct model input.
+
+#### KV Cache effect
+
+None; contributed feature actions own any subsequent model interaction.
+
+## Known Limitations and Deferred Work
+
+<a id="known-limitations-and-deferred-work"></a>
+
+- The shipped renderer is the shared Web Menu, including inside Desktop. Native menu rendering is not supplied.
+- Component-only legacy actions do not appear in the plain-data resolution API.
+- Menus are window-local and transient; they are not persisted in Session data.
+
+<a id="dev-note"></a>
+### Dev Note
+
+<details>
+<summary>Working context for maintainers — click to expand</summary>
+
+None.
+
+</details>
diff --git a/packages/client/ui-context-menu/README.zh.md b/packages/client/ui-context-menu/README.zh.md
new file mode 100644
index 0000000000..78f154feae
--- /dev/null
+++ b/packages/client/ui-context-menu/README.zh.md
@@ -0,0 +1,100 @@
+---
+description: "无需导入 React 组件即可向右键菜单添加操作"
+kind: "package-reference"
+---
+
+# @deepseek-ai/dsh-client-ui-context-menu
+
+[English](README.md) | 中文
+
+## 概述
+
+无需导入 React 组件即可向右键菜单添加操作。即使选中项变化，目标仍保留被点击的会话、工作区、文件、文件夹、链接、图片或窗格。贡献项可以异步查询元数据，并在插件卸载时安全移除。
+
+## 目录
+
+- [使用本包](#use-this-package)
+- [理解实现](#understand-the-implementation)
+- [进一步探索](#further-exploration)
+- [模型体验](#model-experience)
+- [已知限制与延后工作](#known-limitations-and-deferred-work)
+- [开发备注](#dev-note)
+
+-----
+
+<a id="use-this-package"></a>
+## 使用本包
+
+Web 应用 bundle 挂载此客户端插件。外部客户端插件在 `dsh.client.inject` 声明本包，导入 `/client` 类型，并注入 `contextMenus` 服务。`resolutionTimeoutMs` 限制每个提供方的准备时长（默认 1000ms）；超时后取消并忽略该提供方，显示失败提示。
+
+插件通过 `ctx.slots.provideRoot` 向每个 Slot 作用域注入 `useContextMenu`。组件调用一次 `const { getTriggerProps } = useContextMenu()`，再将 `getTriggerProps(target, handlers?)` 展开到各个触发元素上。该工厂是普通函数，可以在循环中调用；它统一处理右键、Shift+F10、ContextMenu 键、视口坐标及无滚动聚焦。已有处理器先运行，`preventDefault()` 保留其处理权，并防止组合或嵌套绑定重复处理。重复、输入法组合及无关按键保持原状。传入 `undefined` 保留原生行为，也可传入目标解析函数，在手势开始时读取业务状态。解析后的对象会在焦点变化前捕获。普通子组件通过 props 或现有 delegate 接收事件 props 或工厂，无需额外 React Context。特殊编辑器和 Canvas 可直接调用 `ctx.contextMenus.open()`。
+
+### 注册操作
+
+在贡献插件中调用 `ctx.effect(() => ctx.contextMenus.register({ id, target, order, resolve }))`。`resolve` 接收捕获的目标和取消信号；返回本地化操作，包含稳定 ID、可选图标、禁用状态、子菜单和执行回调。贡献项先按 `order`、再按 ID 排序。同类目标的贡献 ID 重复会导致注册失败；操作路径重复会拒绝该提供方的结果。发布前会逐段编码 ID。
+
+动作可通过可选 `commandId` 关联已有快捷键命令。浮层订阅 `ctx.shortcuts.catalog`，跟随已配置、移除和重置的绑定更新；子菜单和底部动作采用相同展示。此关联不会调度命令：选择菜单项只调用该动作捕获的 `run` 回调。菜单插件依赖 `shortcuts` 服务。
+
+贡献可通过 `observe(target)` 声明权限、成员状态或本地化标签的数据源。数据源更新时，针对同一捕获目标重新解析该贡献并替换回调；过期的异步准备会被取消。关闭菜单和卸载插件都会释放所有订阅。
+
+通过对 `@deepseek-ai/dsh-client-ui-context-menu/client` 的声明合并扩展 `ContextMenuTargetMap`，即可增加目标类别；`ContextMenuTarget` 从该映射派生 `{ kind, value }` 联合类型。通过 `ctx.contextMenus.open(target, { x, y })` 打开目标。目标值使用不可变、可 JSON 序列化的标识与元数据。执行回调捕获该值，并在操作前重新检查可变资源。新注册项在下次打开时生效。注销会移除可见操作并取消待处理的元数据查询。
+
+`ctx.contextMenus.resolve(target)` 为其他渲染器提供独立菜单实例。订阅不可变操作视图，选择已发布的 ID，并在所属界面关闭时释放。视图仅包含展示字段。回调保留在注册表中，最多执行一次。关闭和替换菜单会取消元数据查询，已选中操作则自行管理执行与取消。提供方或操作拒绝时由持久的覆盖层提示；操作的本地化 `failureLabel` 提供具体的恢复建议。
+
+`ctx.contextMenus.notify(text, success, action?)` 可通过共享 Toast 附加本地化文字操作。操作提供 `label`、`run` 和 `failureLabel`；点击后先关闭提示再执行，失败时显示对应文案。已关闭或被替换的提示不能再次执行其操作。
+
+共享弹窗等待全部贡献项完成或超时后才显示。同一目标在四个 CSS 像素以内重复触发会关闭菜单；更远的触发以独立淡入淡出替换菜单。`ready` 向自定义渲染器提供同一个准备完成时点。结构化操作的图标按分隔线组对齐；组件贡献保留自己的布局。普通关闭保留弹窗 80ms，替换保留 10ms；打开至少等待 20ms，再用 40ms 淡入。减少动态效果偏好会禁用淡入淡出。
+
+操作携带 `icon?: { key: string; src?: string }`。通过 `ctx.slots.inject('contextMenu.icon', () => ctx.slots.register({ name: 'contextMenu.icon', key: 'my-plugin.action' }, Icon))` 注册匹配的图标组件。覆盖层对普通项、子菜单和底部操作都按该 key 调用 `renderSlot`；组件接收已捕获的 `icon` 元数据，包括可选图片 URL。注册随贡献插件和菜单 Slot 声明的生命周期清理。操作视图不包含 JSX 节点。
+
+可选的 keyed Slot `contextMenu.content` 承载组件贡献。现有会话和标签菜单 Slot 名称仍由各自功能适配器维护。键盘菜单键和 Shift+F10 使用焦点触发元素的下边缘定位。`afterContent` 将数据操作放在这些行之后；普通操作排在之前。
+
+-----
+
+<a id="understand-the-implementation"></a>
+## 理解实现
+
+<details>
+<summary>实现细节 — 点击展开</summary>
+
+注册表将查询和回调生命周期与展示分离。共享覆盖层复用现有 Menu 原语，处理键盘移动、焦点返回、关闭、子菜单和视口定位。[注册表](src/client/registry.ts) 管理取消与排序；[目标和操作类型](src/client/types.ts) 定义公开字段。
+
+</details>
+
+-----
+
+<a id="further-exploration"></a>
+## 进一步探索
+
+- [Slots](../ui-slots/README.zh.md) — 组件贡献。
+- [文件操作](../ui-file-actions/README.zh.md) — 原始内容传输。
+- [本地打开](../ui-open-in-app/README.zh.md) — 内置资源操作。
+
+-----
+
+<a id="model-experience"></a>
+## 模型体验
+
+无，因为弹出菜单展示与注册不会构造模型输入。
+
+#### KV 缓存影响
+
+无；贡献操作所属功能负责后续可能产生的模型交互。
+
+## 已知限制与延后工作
+
+<a id="known-limitations-and-deferred-work"></a>
+
+- 内置渲染器是共享 Web Menu，Desktop 也使用它；未提供原生菜单渲染器。
+- 仅有组件形式的旧操作不会出现在纯数据查询 API 中。
+- 菜单是窗口内的临时状态，不持久化到会话数据。
+
+<a id="dev-note"></a>
+### 开发备注
+
+<details>
+<summary>维护者工作背景 — 点击展开</summary>
+
+无。
+
+</details>
diff --git a/packages/client/ui-context-menu/locale/de.json b/packages/client/ui-context-menu/locale/de.json
new file mode 100644
index 0000000000..4b83ec446a
--- /dev/null
+++ b/packages/client/ui-context-menu/locale/de.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Kontextmenüs"
+  }
+}
diff --git a/packages/client/ui-context-menu/locale/en.json b/packages/client/ui-context-menu/locale/en.json
new file mode 100644
index 0000000000..edcf35ac5e
--- /dev/null
+++ b/packages/client/ui-context-menu/locale/en.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Context menus"
+  }
+}
diff --git a/packages/client/ui-context-menu/locale/es.json b/packages/client/ui-context-menu/locale/es.json
new file mode 100644
index 0000000000..dda4ab5e04
--- /dev/null
+++ b/packages/client/ui-context-menu/locale/es.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Menús contextuales"
+  }
+}
diff --git a/packages/client/ui-context-menu/locale/fr.json b/packages/client/ui-context-menu/locale/fr.json
new file mode 100644
index 0000000000..6e41b74ead
--- /dev/null
+++ b/packages/client/ui-context-menu/locale/fr.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Menus contextuels"
+  }
+}
diff --git a/packages/client/ui-context-menu/locale/ja.json b/packages/client/ui-context-menu/locale/ja.json
new file mode 100644
index 0000000000..7b98bda82b
--- /dev/null
+++ b/packages/client/ui-context-menu/locale/ja.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "コンテキストメニュー"
+  }
+}
diff --git a/packages/client/ui-context-menu/locale/pt.json b/packages/client/ui-context-menu/locale/pt.json
new file mode 100644
index 0000000000..4a2c18368a
--- /dev/null
+++ b/packages/client/ui-context-menu/locale/pt.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Menus de contexto"
+  }
+}
diff --git a/packages/client/ui-context-menu/locale/ru.json b/packages/client/ui-context-menu/locale/ru.json
new file mode 100644
index 0000000000..33b3ad67a4
--- /dev/null
+++ b/packages/client/ui-context-menu/locale/ru.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Контекстные меню"
+  }
+}
diff --git a/packages/client/ui-context-menu/locale/zh.json b/packages/client/ui-context-menu/locale/zh.json
new file mode 100644
index 0000000000..974fc94de9
--- /dev/null
+++ b/packages/client/ui-context-menu/locale/zh.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "右键菜单"
+  }
+}
diff --git a/packages/client/ui-context-menu/package.json b/packages/client/ui-context-menu/package.json
new file mode 100644
index 0000000000..6aacc8717f
--- /dev/null
+++ b/packages/client/ui-context-menu/package.json
@@ -0,0 +1,70 @@
+{
+  "name": "@deepseek-ai/dsh-client-ui-context-menu",
+  "description": "Typed, plugin-extensible context menus with captured targets and shared Web presentation",
+  "version": "0.2.2-alpha.2",
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/ui-context-menu"
+  },
+  "type": "module",
+  "main": "lib/index.js",
+  "types": "lib/types/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/types/index.d.ts",
+      "default": "./lib/index.js"
+    },
+    "./client": {
+      "types": "./lib/types/client/index.d.ts",
+      "default": "./lib/client.js"
+    },
+    "./src/*": "./src/*",
+    "./package.json": "./package.json",
+    "./locale/*.json": "./locale/*.json"
+  },
+  "dsh": {
+    "client": {
+      "inject": [
+        "@deepseek-ai/dsh-client-locale",
+        "@deepseek-ai/dsh-client-ui-layout",
+        "@deepseek-ai/dsh-client-shortcuts"
+      ],
+      "platform": "web"
+    }
+  },
+  "scripts": {
+    "bundle": "tsdown",
+    "watch": "tsdown --watch"
+  },
+  "license": "MIT",
+  "peerDependencies": {
+    "@deepseek-ai/cordis": "workspace:~"
+  },
+  "devDependencies": {
+    "@deepseek-ai/schemastery": "workspace:~",
+    "@deepseek-ai/cordis": "workspace:~",
+    "@deepseek-ai/dsh-client-locale": "workspace:*",
+    "@deepseek-ai/dsh-client-store": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-primitives": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-renderer": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-layout": "workspace:*",
+    "@deepseek-ai/dsh-brand": "workspace:*",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "@deepseek-ai/dsh-client-test-runtime": "workspace:*",
+    "@deepseek-ai/dsh-session": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-dockkit": "workspace:*",
+    "@deepseek-ai/dsh-client-shortcuts": "workspace:*"
+  },
+  "files": [
+    "locale/*.json",
+    "lib/index.js",
+    "lib/client.js",
+    "lib/types/**/*.d.ts"
+  ]
+}
diff --git a/packages/client/ui-context-menu/src/client/View.tsx b/packages/client/ui-context-menu/src/client/View.tsx
new file mode 100644
index 0000000000..58a9808f3a
--- /dev/null
+++ b/packages/client/ui-context-menu/src/client/View.tsx
@@ -0,0 +1,60 @@
+/** Shared Web renderer for Client menu contributions. */
+import { Menu, Toast } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { MenuEntry } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { InjectFace, PropsStore, PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
+import type { Shortcuts, ShortcutCatalogEntry } from '@deepseek-ai/dsh-client-shortcuts/client'
+import type { createMenuStore } from './store.ts'
+import type { MenuActionView } from './types.ts'
+
+/**
+ * @param actions - plain presentation.
+ * @param catalog - effective user shortcuts.
+ * @param renderSlot - owner-authorized keyed icon renderer.
+ * @returns Existing Menu entries.
+ */
+export function menuEntries(
+  actions: readonly MenuActionView[], catalog: readonly ShortcutCatalogEntry[],
+  renderSlot: PropsRenderSlots<'contextMenu.icon'>['renderSlot'],
+): MenuEntry[] {
+  return actions.flatMap((action) => {
+    const shortcut = catalog.find(entry => entry.id === action.commandId)
+    const item: MenuEntry = { id: action.id, label: action.label,
+      ...(shortcut === undefined ? {} : { shortcut }),
+      ...(action.disabled === undefined ? {} : { disabled: action.disabled }),
+      ...(action.danger === undefined ? {} : { danger: action.danger }),
+      ...(action.icon === undefined ? {} : {
+        icon: renderSlot('contextMenu.icon', { icon: action.icon }, { entryKey: action.icon.key }),
+      }),
+      ...(action.children === undefined ? {} : { submenu: menuEntries(action.children, catalog, renderSlot) }),
+    }
+    return action.separatorBefore ? [{ type: 'separator', id: `${action.id}:separator` }, item] : [item]
+  })
+}
+
+/** Shared overlay callbacks. */
+export interface MenuOverlayInjected {
+  hooks: { catalog: Shortcuts['catalog'] }
+  close: () => void
+  returnFocus?: () => HTMLElement | null
+  select: (id: string) => void
+}
+type Props = PropsStore<ReturnType<typeof createMenuStore>>
+  & PropsRenderSlots<'contextMenu.content' | 'contextMenu.icon'> & InjectFace<MenuOverlayInjected>
+
+/** @param props - registered state, target-specific legacy rows, and actions. @returns one menu and persistent feedback. */
+export function MenuOverlay({ useStore, actions, renderSlot, close, select, returnFocus, useCatalog }: Props) {
+  const catalog = useCatalog(value => value)
+  const { target, point, items, notice, occurrence, closing, replacing } = useStore(s => s)
+  return <>
+    <Menu key={occurrence} open={target !== null} anchor={null} portal autoFocus contextual returnFocus={returnFocus}
+      exiting={closing ? replacing ? 'replace' : 'dismiss' : undefined}
+      getAnchorRect={() => new DOMRect(point.x, point.y, 0, 0)}
+      items={menuEntries(items.filter(item => !item.afterContent), catalog, renderSlot)}
+      footer={menuEntries(items.filter(item => item.afterContent), catalog, renderSlot)} onClose={close} onSelect={select}>
+      {target !== null && renderSlot('contextMenu.content', { target, dismiss: close }, { entryKey: target.kind })}
+    </Menu>
+    {notice !== null && <Toast key={notice.id} text={notice.text}
+      {...notice.action === undefined ? {} : { actions: [notice.action] }}
+      {...notice.success ? { tone: 'success' as const } : {}} onDone={() => { actions.notify(null) }} />}
+  </>
+}
diff --git a/packages/client/ui-context-menu/src/client/index.ts b/packages/client/ui-context-menu/src/client/index.ts
new file mode 100644
index 0000000000..ac4fc288be
--- /dev/null
+++ b/packages/client/ui-context-menu/src/client/index.ts
@@ -0,0 +1,155 @@
+import type {} from '@deepseek-ai/dsh-client-ui-renderer/client'
+/** Window-local menu capability and its Web overlay. */
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import type { Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/dsh-client-ui-layout/client'
+import type {} from '@deepseek-ai/dsh-client-locale/client'
+import z from '@deepseek-ai/schemastery'
+import { MENU_TRANSITION_MS } from '@deepseek-ai/dsh-client-ui-primitives'
+import { menuTargetKey } from './target-key.ts'
+import { MenuRegistry } from './registry.ts'
+import { createMenuStore } from './store.ts'
+import { dictionaries } from './locales.ts'
+import { MenuOverlay } from './View.tsx'
+import type { ContextMenus, MenuResolution, ContextMenuTarget, ContextMenuIcon, MenuPoint, UseContextMenu } from './types.ts'
+import { createContextMenuBindings } from './trigger.ts'
+
+export type { ContextMenus, ContextMenuTarget, ContextMenuTargetMap, MenuPoint, MenuAction, MenuActionView, MenuContribution, MenuResolution } from './types.ts'
+export type { ContextMenuBindings, ContextMenuTriggerProps, UseContextMenu } from './types.ts'
+export type { ContextMenuIcon } from './types.ts'
+export { createMenuStore } from './store.ts'
+
+declare module '@deepseek-ai/cordis' {
+  interface Context { /** Extensible context menus for explicit clicked objects. */ contextMenus: ContextMenus }
+}
+declare module '@deepseek-ai/dsh-client-ui-slots' {
+  interface GlobalStandardProps {
+    /** Menu bindings for explicit objects, available in every Slot scope. */
+    useContextMenu: UseContextMenu
+  }
+  interface SlotMap {
+    /** Business-owned glyph or image selected by the action's icon key. */
+    'contextMenu.icon': { kind: 'keyed'; scope: 'root'; inline: true; owner: { icon: ContextMenuIcon } }
+    /** Optional React rows for existing extension positions; data contributions need no renderer. */
+    'contextMenu.content': { kind: 'keyed'; scope: 'root'; owner: { target: ContextMenuTarget; dismiss: () => void } }
+  }
+  interface LocaleNamespaceMap { /** Menu operation feedback. */ contextMenu: 'failed' }
+}
+
+/** Maximum time to prepare each contribution before omitting its pending actions. */
+export interface Config { resolutionTimeoutMs?: number }
+/** Validated Client menu preparation budget. */
+export const Config: z<Config> = z.object({ resolutionTimeoutMs: z.natural().min(1).default(1000) })
+
+/** Required overlay and localization services. */
+export const inject = ['slots', 'locale', 'shortcuts']
+/** @param ctx - plugin-owned Client context. @param config - validated preparation budget. */
+export function apply(ctx: Context, config: Config = Config({})): void {
+  ctx.effect(() => ctx.locale.register('contextMenu', dictionaries), 'context menu: locale')
+  const t = ctx.locale.bind('contextMenu')
+  const handle = createMenuStore()
+  const instance = handle.create()
+  const store: typeof handle = { ...handle, create: () => instance }
+  const targetSource = createSnapshotStore<ContextMenuTarget | null>(null)
+  let sequence = 0
+  let active: { resolution: MenuResolution; unsubscribe: () => void; target: ContextMenuTarget; point: MenuPoint } | undefined
+  let closeTimer: ReturnType<typeof setTimeout> | undefined
+  let openingTimer: ReturnType<typeof setTimeout> | undefined
+  let finishOpening: (() => void) | undefined
+  let returnFocus: HTMLElement | null = null
+  let disposed = false
+  const notify: ContextMenus['notify'] = (text, success = false, action) => {
+    if (disposed) return
+    const id = ++sequence
+    instance.actions.notify({ id, text, success, ...action === undefined ? {} : { action: {
+      label: action.label,
+      onClick: () => {
+        if (disposed || instance.getSnapshot().notice?.id !== id) return
+        instance.actions.notify(null)
+        try { void Promise.resolve(action.run()).catch(() => { notify(action.failureLabel) }) }
+        catch (_error) { notify(action.failureLabel) }
+      },
+    } } })
+  }
+  const registry = new MenuRegistry((message) => { notify(message ?? t('failed')) }, config.resolutionTimeoutMs)
+  const cancelOpening = (): void => {
+    clearTimeout(openingTimer); finishOpening?.(); finishOpening = undefined
+    active?.unsubscribe(); active?.resolution.dispose(); active = undefined
+    targetSource.set(null)
+  }
+  const dismiss = (replacing: boolean): void => {
+    cancelOpening()
+    clearTimeout(closeTimer)
+    if (instance.getSnapshot().target === null) return
+    instance.actions.exit(replacing)
+    closeTimer = setTimeout(() => { instance.actions.close() }, replacing ? MENU_TRANSITION_MS.replace : MENU_TRANSITION_MS.dismiss)
+  }
+  const close = (): void => { dismiss(false) }
+  const contextMenus: ContextMenus = {
+    active: targetSource,
+    register: input => registry.register(input), resolve: target => registry.resolve(target), notify, close,
+    open: (target, point) => {
+      const previous = active
+      if (previous !== undefined
+        && Math.hypot(previous.point.x - point.x, previous.point.y - point.y) <= 4
+        && menuTargetKey(previous.target) === menuTargetKey(target)) { close(); return }
+      const focused = document.activeElement
+      if (!(focused instanceof Element) || focused.closest('[data-context-menu]') === null) {
+        returnFocus = focused instanceof HTMLElement ? focused : null
+      }
+      dismiss(true)
+      const resolution = registry.resolve(target)
+      targetSource.set(target)
+      let displayed = false
+      const publish = (): void => { if (displayed) instance.actions.items(resolution.source.getSnapshot()) }
+      const occurrence = { resolution, unsubscribe: resolution.source.subscribe(publish), target, point }
+      active = occurrence
+      const delay = new Promise<void>((resolve) => {
+        finishOpening = resolve; openingTimer = setTimeout(resolve, MENU_TRANSITION_MS.prepare)
+      })
+      void Promise.all([resolution.ready, delay]).then(() => {
+        if (active !== occurrence) return
+        clearTimeout(closeTimer)
+        instance.actions.open(target, point)
+        displayed = true
+        publish()
+      })
+    },
+  }
+  ctx.provide('contextMenus', contextMenus)
+  const bindings = createContextMenuBindings((target, point) => { contextMenus.open(target, point) }, () => !disposed)
+  ctx.slots.provideRoot({ props: { useContextMenu: () => bindings } })
+  ctx.effect(() => {
+    const outside = (event: PointerEvent): void => {
+      if (event.button === 2 || (event.target instanceof Element && event.target.closest('[role="menu"], [data-context-menu-trigger]'))) return
+      close()
+    }
+    const context = (event: MouseEvent): void => { if (!event.defaultPrevented) close() }
+    const escape = (event: KeyboardEvent): void => {
+      if (active !== undefined && instance.getSnapshot().target === null && event.key === 'Escape') {
+        event.preventDefault(); event.stopImmediatePropagation(); close()
+      }
+    }
+    document.addEventListener('pointerdown', outside)
+    document.addEventListener('contextmenu', context)
+    window.addEventListener('keydown', escape, true)
+    return () => {
+      disposed = true; cancelOpening(); clearTimeout(closeTimer); registry.dispose(); instance.actions.close()
+      document.removeEventListener('pointerdown', outside)
+      document.removeEventListener('contextmenu', context)
+      window.removeEventListener('keydown', escape, true)
+    }
+  }, 'context menu: lifetime')
+  ctx.slots.inject('shell.overlay', () => ctx.slots.register({
+    name: 'shell.overlay', id: 'context-menu', store,
+    children: {
+      'contextMenu.content': { kind: 'keyed', scope: 'root' },
+      'contextMenu.icon': { kind: 'keyed', scope: 'root', inline: true },
+    },
+    inject: () => ({ hooks: { catalog: ctx.shortcuts.catalog }, close, returnFocus: () => returnFocus, select: (id: string) => {
+      const selected = active?.resolution
+      active?.unsubscribe(); active = undefined
+      targetSource.set(null); dismiss(false)
+      selected?.select(id); selected?.dispose() } }),
+  }, MenuOverlay))
+}
diff --git a/packages/client/ui-context-menu/src/client/locales.ts b/packages/client/ui-context-menu/src/client/locales.ts
new file mode 100644
index 0000000000..d8b33a422e
--- /dev/null
+++ b/packages/client/ui-context-menu/src/client/locales.ts
@@ -0,0 +1,11 @@
+/** Context-menu operation feedback, separate from plugin display metadata. */
+export const dictionaries = {
+  zh: { failed: '操作失败，请重试' },
+  en: { failed: 'Could not complete the action. Try again.' },
+  ja: { failed: '操作に失敗しました。再試行してください。' },
+  es: { failed: 'No se pudo completar la acción. Inténtelo de nuevo.' },
+  fr: { failed: 'Impossible de terminer l’action. Réessayez.' },
+  de: { failed: 'Die Aktion konnte nicht abgeschlossen werden. Versuchen Sie es erneut.' },
+  ru: { failed: 'Не удалось выполнить действие. Повторите попытку.' },
+  pt: { failed: 'Não foi possível concluir a ação. Tente novamente.' },
+} satisfies Record<string, { failed: string }>
diff --git a/packages/client/ui-context-menu/src/client/registry.ts b/packages/client/ui-context-menu/src/client/registry.ts
new file mode 100644
index 0000000000..3725bb9fed
--- /dev/null
+++ b/packages/client/ui-context-menu/src/client/registry.ts
@@ -0,0 +1,160 @@
+/** Ordered menu resolution with cancellation and contribution-owned action lifetimes. */
+import type { ObservableSnapshot } from '@deepseek-ai/dsh-client-store'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import type { MenuAction, MenuActionView, MenuContribution, MenuResolution, ContextMenuTarget, ContextMenuTargetMap } from './types.ts'
+
+interface Provider {
+  readonly id: string
+  readonly order: number
+  readonly kind: keyof ContextMenuTargetMap
+  readonly lifetime: AbortController
+  observe(target: ContextMenuTarget): readonly ObservableSnapshot<unknown>[]
+  resolve(target: ContextMenuTarget, signal: AbortSignal): readonly MenuAction[] | Promise<readonly MenuAction[]>
+}
+
+/** React-free registry; each occurrence captures the providers registered at opening. */
+export class MenuRegistry {
+  private readonly providers = new Map<string, Provider>()
+  private readonly occurrences = new Set<() => void>()
+  private disposed = false
+  constructor(private readonly failed: (message?: string) => void, private readonly timeoutMs?: number) {}
+
+  /**
+   * Register actions for subsequent openings.
+   * @param input - provider definition.
+   * @returns removal of this contribution and its pending resolutions.
+   */
+  register<K extends keyof ContextMenuTargetMap>(input: MenuContribution<K>): () => void {
+    if (this.disposed) throw new Error('Menu registry is disposed')
+    const key = `${encodeURIComponent(input.target)}/${encodeURIComponent(input.id)}`
+    if (this.providers.has(key)) throw new Error(`Duplicate menu contribution: ${key}`)
+    const provider: Provider = {
+      id: input.id, kind: input.target, order: input.order, lifetime: new AbortController(),
+      observe: target => input.observe?.(target.value as ContextMenuTargetMap[K]) ?? [],
+      resolve: (target, signal) => input.resolve(target.value as ContextMenuTargetMap[K], signal),
+    }
+    this.providers.set(key, provider)
+    return () => {
+      if (provider.lifetime.signal.aborted) return
+      this.providers.delete(key)
+      provider.lifetime.abort()
+    }
+  }
+
+  /**
+   * Resolve an independently owned occurrence.
+   * @param target - captured clicked identity.
+   * @returns presentation, selection, and disposal.
+   */
+  resolve(target: ContextMenuTarget): MenuResolution {
+    if (this.disposed) throw new Error('Menu registry is disposed')
+    const lifetime = new AbortController()
+    const source = createSnapshotStore<readonly MenuActionView[]>([])
+    const resolved = new Map<Provider, readonly MenuActionView[]>()
+    const callbacks = new Map<string, { provider: Provider; action: MenuAction }>()
+    const providers = [...this.providers.values()].filter(p => p.kind === target.kind)
+      .sort((a, b) => a.order - b.order || a.id.localeCompare(b.id))
+    const refresh = (): void => {
+      source.set(providers.flatMap(provider =>
+        provider.lifetime.signal.aborted ? [] : resolved.get(provider) ?? []))
+    }
+    const cleanup: (() => void)[] = []
+    const dispose = (): void => {
+      if (lifetime.signal.aborted) return
+      lifetime.abort()
+      for (const detach of cleanup) detach()
+      callbacks.clear()
+      this.occurrences.delete(dispose)
+    }
+    this.occurrences.add(dispose)
+    const pending: Promise<void>[] = []
+    for (const provider of providers) {
+      let preparation: AbortController | undefined
+      let actionIds: string[] = []
+      let preparing: Promise<void> | undefined
+      const clear = (): void => {
+        for (const id of actionIds) callbacks.delete(id)
+        actionIds = []
+        resolved.delete(provider)
+        refresh()
+      }
+      const prepare = (): void => {
+        preparation?.abort()
+        const deadline = new AbortController()
+        preparation = deadline
+        const signal = AbortSignal.any([lifetime.signal, provider.lifetime.signal, deadline.signal])
+        const accept = (actions: readonly MenuAction[]): void => {
+          if (signal.aborted) return
+          const next = new Map<string, MenuAction>()
+          const project = (action: MenuAction, parent: string): MenuActionView => {
+            const id = `${parent}/${encodeURIComponent(action.id)}`
+            if (next.has(id)) throw new Error(`Duplicate menu action: ${id}`)
+            next.set(id, action)
+            const { run: _run, failureLabel: _failureLabel, children, ...view } = action
+            return { ...view, id, ...(children === undefined ? {} : { children: children.map(child => project(child, id)) }) }
+          }
+          const views = actions.map(action => project(action, encodeURIComponent(provider.id)))
+          for (const id of actionIds) callbacks.delete(id)
+          for (const [id, action] of next) callbacks.set(id, { provider, action })
+          actionIds = [...next.keys()]
+          resolved.set(provider, views)
+          refresh()
+        }
+        preparing = undefined
+        try {
+          const result = provider.resolve(target, signal)
+          if (result instanceof Promise) clear()
+          preparing = result instanceof Promise ? new Promise<void>((settle) => {
+            const timer = this.timeoutMs === undefined ? undefined : setTimeout(() => {
+              deadline.abort(); this.failed()
+            }, this.timeoutMs)
+            const finish = (): void => { clearTimeout(timer); signal.removeEventListener('abort', finish); settle() }
+            signal.addEventListener('abort', finish, { once: true })
+            void result.then(accept).catch(() => { if (!signal.aborted) this.failed() }).finally(finish)
+          }) : undefined
+          if (!(result instanceof Promise)) accept(result)
+        } catch (_error) { if (!signal.aborted) { clear(); this.failed() } }
+      }
+      const subscriptions: (() => void)[] = []
+      const withdraw = (): void => {
+        preparation?.abort()
+        for (const detach of subscriptions.splice(0)) detach()
+        clear()
+      }
+      provider.lifetime.signal.addEventListener('abort', withdraw, { once: true })
+      cleanup.push(() => {
+        provider.lifetime.signal.removeEventListener('abort', withdraw)
+        withdraw()
+      })
+      try {
+        for (const input of provider.observe(target)) subscriptions.push(input.subscribe(prepare))
+        prepare()
+      } catch (_error) { if (!lifetime.signal.aborted && !provider.lifetime.signal.aborted) this.failed() }
+      pending.push((async () => {
+        let current: Promise<void> | undefined
+        do { current = preparing; await current } while (current !== preparing)
+      })())
+    }
+    return {
+      source, dispose, ready: Promise.all(pending).then(() => {}),
+      select: (id) => {
+        const selected = callbacks.get(id)
+        if (lifetime.signal.aborted || selected === undefined || selected.provider.lifetime.signal.aborted
+          || selected.action.disabled || selected.action.children !== undefined) return
+        const run = selected.action.run
+        dispose()
+        try { void Promise.resolve(run?.()).catch(() => { this.failed(selected.action.failureLabel) }) }
+        catch (_error) { this.failed(selected.action.failureLabel) }
+      },
+    }
+  }
+
+  /** Cancel every occurrence and reject further registrations or resolutions. */
+  dispose(): void {
+    if (this.disposed) return
+    this.disposed = true
+    for (const dispose of this.occurrences) dispose()
+    for (const provider of this.providers.values()) provider.lifetime.abort()
+    this.providers.clear()
+  }
+}
diff --git a/packages/client/ui-context-menu/src/client/store.ts b/packages/client/ui-context-menu/src/client/store.ts
new file mode 100644
index 0000000000..8791201c91
--- /dev/null
+++ b/packages/client/ui-context-menu/src/client/store.ts
@@ -0,0 +1,41 @@
+/** Single-popup viewing state and feedback retained outside trigger components. */
+import { defineStore, type EngineStoreHandle } from '@deepseek-ai/dsh-client-store'
+import type { MenuActionView, MenuPoint, ContextMenuTarget } from './types.ts'
+
+interface Notice { id: number; text: string; success: boolean; action?: { label: string; onClick: () => void } }
+interface MenuState {
+  occurrence: number
+  closing: boolean
+  replacing: boolean
+  target: ContextMenuTarget | null
+  point: MenuPoint
+  items: readonly MenuActionView[]
+  notice: Notice | null
+}
+type MenuActions = {
+  open(draft: MenuState, target: ContextMenuTarget, point: MenuPoint): void
+  items(draft: MenuState, items: readonly MenuActionView[]): void
+  exit(draft: MenuState, replacing: boolean): void
+  close(draft: MenuState): void
+  notify(draft: MenuState, notice: Notice | null): void
+}
+
+/**
+ * Create the root popup store.
+ * @returns the presentation and its mutation actions.
+ */
+export function createMenuStore(): EngineStoreHandle<MenuState, MenuActions> {
+  return defineStore<MenuState, MenuActions>({
+    init: () => ({ occurrence: 0, closing: false, replacing: false, target: null, point: { x: 0, y: 0 }, items: [], notice: null }),
+    actions: {
+      open(draft, target, point) {
+        draft.occurrence++; draft.closing = false; draft.replacing = false
+        draft.target = target; draft.point = point; draft.items = []
+      },
+      items(draft, items) { draft.items = items },
+      exit(draft, replacing) { draft.closing = true; draft.replacing = replacing },
+      close(draft) { draft.target = null; draft.items = [] },
+      notify(draft, notice) { draft.notice = notice },
+    },
+  })
+}
diff --git a/packages/client/ui-context-menu/src/client/target-key.ts b/packages/client/ui-context-menu/src/client/target-key.ts
new file mode 100644
index 0000000000..4304d2d617
--- /dev/null
+++ b/packages/client/ui-context-menu/src/client/target-key.ts
@@ -0,0 +1,14 @@
+/** Stable equality for the JSON-compatible target vocabulary, independent of object insertion order. */
+import type { ContextMenuTarget } from './types.ts'
+
+/**
+ * Compare captured JSON targets independently of object key insertion order.
+ * @param target - captured immutable target.
+ * @returns canonical JSON identity.
+ */
+export function menuTargetKey(target: ContextMenuTarget): string {
+  return JSON.stringify(target, (_key: string, value: unknown): unknown => {
+    if (typeof value !== 'object' || value === null || Array.isArray(value)) return value
+    return Object.fromEntries(Object.entries(value).sort(([left], [right]) => left.localeCompare(right)))
+  })
+}
diff --git a/packages/client/ui-context-menu/src/client/trigger.ts b/packages/client/ui-context-menu/src/client/trigger.ts
new file mode 100644
index 0000000000..04cd530e1a
--- /dev/null
+++ b/packages/client/ui-context-menu/src/client/trigger.ts
@@ -0,0 +1,43 @@
+/** DOM gesture bindings owned by one menu plugin instance. */
+import type { SyntheticEvent } from 'react'
+import type { ContextMenuTriggerProps, MenuPoint, ContextMenuTarget } from './types.ts'
+
+/**
+ * Create stable bindings for the plugin's injected hook.
+ * @param open - Open against the supplied captured target and viewport position.
+ * @param active - Whether the plugin still owns its service.
+ * @returns Ordinary trigger-prop factory; no React subscription or context is created.
+ */
+export function createContextMenuBindings<Target extends object = ContextMenuTarget>(
+  open: (target: Target, point: MenuPoint) => void, active: () => boolean,
+): { getTriggerProps: (target: Target | (() => Target) | undefined, handlers?: ContextMenuTriggerProps) => ContextMenuTriggerProps } {
+  return {
+    getTriggerProps(target, handlers = {}) {
+      if (target === undefined) return handlers
+      const show = (event: SyntheticEvent<HTMLElement>, x: number, y: number): void => {
+        if (event.defaultPrevented || !active()) return
+        const captured = typeof target === 'function' ? target() : target
+        event.preventDefault()
+        event.stopPropagation()
+        event.currentTarget.focus({ preventScroll: true })
+        open(captured, { x, y })
+      }
+      return {
+        ...handlers,
+        tabIndex: handlers.tabIndex ?? 0,
+        onContextMenu(event) {
+          handlers.onContextMenu?.(event)
+          const rect = event.clientX === 0 && event.clientY === 0 ? event.currentTarget.getBoundingClientRect() : undefined
+          show(event, rect?.left ?? event.clientX, rect?.bottom ?? event.clientY)
+        },
+        onKeyDown(event) {
+          handlers.onKeyDown?.(event)
+          if (event.defaultPrevented || event.repeat || event.nativeEvent.isComposing || event.ctrlKey || event.altKey || event.metaKey
+            || !(event.key === 'ContextMenu' || event.key === 'F10' && event.shiftKey)) return
+          const rect = event.currentTarget.getBoundingClientRect()
+          show(event, rect.left, rect.bottom)
+        },
+      }
+    },
+  }
+}
diff --git a/packages/client/ui-context-menu/src/client/types.ts b/packages/client/ui-context-menu/src/client/types.ts
new file mode 100644
index 0000000000..d32a788fb4
--- /dev/null
+++ b/packages/client/ui-context-menu/src/client/types.ts
@@ -0,0 +1,143 @@
+/** Client menu contributions and explicit gesture targets. */
+import type { ShortcutCommandId } from '@deepseek-ai/dsh-client-shortcuts/client'
+import type { ObservableSnapshot } from '@deepseek-ai/dsh-client-store'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type { PaneId, TabRecord } from '@deepseek-ai/dsh-client-ui-dockkit'
+import type { HTMLAttributes } from 'react'
+
+/** DOM handlers bound to an explicit object; existing handlers can prevent menu activation. */
+export type ContextMenuTriggerProps = Pick<HTMLAttributes<HTMLElement>, 'onContextMenu' | 'onKeyDown' | 'tabIndex'>
+
+/** Functions supplied by the globally injected useContextMenu hook. */
+export interface ContextMenuBindings {
+  /**
+   * Bind an object or deferred business target to one element. This is an ordinary function, safe in loops.
+   * @param target - Object captured when the gesture runs; undefined retains native behavior.
+   * @param handlers - Existing handlers run first and can cancel with preventDefault().
+   * @returns Combined pointer and keyboard handlers plus a keyboard focus stop.
+   */
+  getTriggerProps: (
+    target: ContextMenuTarget | (() => ContextMenuTarget) | undefined, handlers?: ContextMenuTriggerProps,
+  ) => ContextMenuTriggerProps
+}
+
+/** Read menu gesture bindings owned by the current menu plugin lifetime. */
+export type UseContextMenu = () => ContextMenuBindings
+
+/** External plugins extend this map with their own target families. */
+export interface ContextMenuTargetMap {
+  session: { readonly sessionId: SessionId; readonly displayTitle: string }
+  file: { readonly sessionId: SessionId; readonly path: string; readonly line?: number; readonly paneId?: PaneId }
+  directory: { readonly sessionId: SessionId; readonly path: string }
+  url: { readonly sessionId: SessionId; readonly url: string }
+  image: {
+    readonly sessionId?: SessionId
+    readonly url: string
+    readonly name?: string
+    readonly mediaType?: string
+    readonly path?: string
+  }
+  tab: { readonly sessionId: SessionId; readonly paneId: PaneId; readonly tab: TabRecord }
+}
+
+/** Captured target; changing selection never changes an open menu's target. */
+export type ContextMenuTarget = {
+  [K in keyof ContextMenuTargetMap]: { readonly kind: K; readonly value: ContextMenuTargetMap[K] }
+}[keyof ContextMenuTargetMap]
+/** Pointer position in CSS pixels; keyboard gestures use the trigger's bottom edge. */
+export interface MenuPoint { readonly x: number; readonly y: number }
+/** Keyed icon renderer and optional image URL captured with the action. */
+export interface ContextMenuIcon {
+  readonly key: string
+  readonly src?: string
+}
+/** Client presentation fields; callbacks stay in the registry. */
+export interface MenuActionView {
+  readonly id: string
+  readonly label: string
+  /** Command identity for live shortcut display only; selection still invokes this action’s run callback. */
+  readonly commandId?: ShortcutCommandId
+  readonly disabled?: boolean
+  readonly icon?: ContextMenuIcon
+  readonly danger?: boolean
+  readonly separatorBefore?: boolean
+  /** Render after legacy component contributions in the shared Web popup. */
+  readonly afterContent?: boolean
+  readonly children?: readonly MenuActionView[]
+}
+/** A contribution can decline, return actions immediately, or resolve metadata asynchronously. */
+export interface MenuAction extends Omit<MenuActionView, 'children'> {
+  readonly children?: readonly MenuAction[]
+  /** Localized operation and recovery guidance when execution rejects. */
+  readonly failureLabel?: string
+  /** Execute against the captured target. Reject for a visible failure; cancellation resolves normally. */
+  readonly run?: () => void | Promise<void>
+}
+/** A namespaced contribution, ordered within its target family. */
+export interface MenuContribution<K extends keyof ContextMenuTargetMap> {
+  readonly id: string
+  readonly target: K
+  readonly order: number
+  /**
+   * Reactive inputs that re-resolve actions for the same captured target.
+   * @param target - clicked object.
+   * @returns sources owned by the contributing feature; unsubscribed on dismissal or unload.
+   */
+  observe?(target: ContextMenuTargetMap[K]): readonly ObservableSnapshot<unknown>[]
+  /**
+   * @param target - clicked object.
+   * @param signal - aborted on dismissal, plugin unload, or a newer observed preparation.
+   * @returns available actions.
+   */
+  resolve(target: ContextMenuTargetMap[K], signal: AbortSignal): readonly MenuAction[] | Promise<readonly MenuAction[]>
+}
+/** Independent menu occurrence used by custom renderers and embedded menus. */
+export interface MenuResolution {
+  /** Read a new immutable presentation after each provider settles, updates, or is withdrawn. */
+  readonly source: ObservableSnapshot<readonly MenuActionView[]>
+  /** Settles when all opening contributions have completed or been withdrawn. */
+  readonly ready: Promise<void>
+  /**
+   * Select once; disposed or removed contributions cannot execute.
+   * @param id - resolved action id.
+   */
+  select(id: string): void
+  /** Cancel metadata queries and discard callbacks. */
+  dispose(): void
+}
+/** Client capability used equally by built-in and external plugins. */
+export interface ContextMenus {
+  /** Captured target of the shared popup; null after dismissal. */
+  readonly active: ObservableSnapshot<ContextMenuTarget | null>
+  /**
+   * Register for subsequent openings; unloading withdraws actions and aborts their queries. Duplicate ids within a target fail.
+   * @param contribution - target provider.
+   * @returns unregister.
+   */
+  register<K extends keyof ContextMenuTargetMap>(contribution: MenuContribution<K>): () => void
+  /**
+   * Open the single shared popup.
+   * @param target - captured object.
+   * @param point - viewport position.
+   */
+  open(target: ContextMenuTarget, point: MenuPoint): void
+  /**
+   * Resolve an embedded menu without opening the shared popup.
+   * @param target - captured object.
+   * @returns owned occurrence.
+   */
+  resolve(target: ContextMenuTarget): MenuResolution
+  /** Close the shared popup and cancel its metadata queries. */
+  close(): void
+  /**
+   * Show localized feedback outside the originating surface.
+   * @param text - localized message.
+   * @param success - successful action.
+   * @param action - optional text action retained by this notice; rejects with localized failure feedback.
+   */
+  notify(text: string, success?: boolean, action?: {
+    readonly label: string
+    readonly run: () => void | Promise<void>
+    readonly failureLabel: string
+  }): void
+}
diff --git a/packages/client/ui-context-menu/src/index.ts b/packages/client/ui-context-menu/src/index.ts
new file mode 100644
index 0000000000..77258040c7
--- /dev/null
+++ b/packages/client/ui-context-menu/src/index.ts
@@ -0,0 +1,4 @@
+/** Host Loader entry; menus belong to the Client. */
+
+/** Register the browser plugin without Host behavior. */
+export function apply(): void {}
diff --git a/packages/client/ui-context-menu/tests/overlay.client.spec.tsx b/packages/client/ui-context-menu/tests/overlay.client.spec.tsx
new file mode 100644
index 0000000000..54194a811b
--- /dev/null
+++ b/packages/client/ui-context-menu/tests/overlay.client.spec.tsx
@@ -0,0 +1,166 @@
+// @vitest-environment jsdom
+import { act, cleanup, fireEvent, render, waitFor } from '@testing-library/react'
+import { afterEach, expect, it, onTestFinished, vi } from 'vitest'
+import { bindSnapshotSelector, SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import type { PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+import { MenuItemButton } from '@deepseek-ai/dsh-client-ui-primitives'
+import { ShortcutRegistry } from '../../shortcuts/src/client/registry.ts'
+import type { ShortcutCommandId } from '@deepseek-ai/dsh-client-shortcuts/client'
+import { SessionId } from '@deepseek-ai/dsh-session/types'
+import { createMenuStore } from '../src/client/store.ts'
+import { MenuOverlay } from '../src/client/View.tsx'
+import { apply, inject } from '../src/client/index.ts'
+import type { ContextMenuTarget } from '../src/client/types.ts'
+
+afterEach(() => { cleanup(); vi.useRealTimers() })
+
+it('renders legacy Session actions before data contributions and restores More focus after dismissal', async () => {
+  const store = createMenuStore().create(), run = vi.fn()
+  const close = () => { store.actions.close() }
+  const useStore = bindSnapshotSelector(store)
+  const view = render(<>
+    <button onClick={() => { store.actions.open({ kind: 'session', value: { sessionId: SessionId('clicked'), displayTitle: 'Clicked' } }, { x: 20, y: 30 }) }}>More</button>
+    <MenuOverlay useCatalog={select => select([])} useStore={useStore} actions={store.actions} close={close} select={run}
+      renderSlot={(_key, owner: object) => {
+        const { target, dismiss } = owner as { target: ContextMenuTarget; dismiss: () => void }
+        return <MenuItemButton onSelect={() => {
+          if (target.kind === 'session') run(target.value.sessionId)
+          dismiss()
+        }}>Export</MenuItemButton>
+      }} />
+  </>)
+  const trigger = view.getByRole('button', { name: 'More' })
+  trigger.focus(); fireEvent.click(trigger)
+  await waitFor(() =>{  expect(view.getByRole('menuitem', { name: 'Export' })).toBe(document.activeElement) })
+  fireEvent.click(view.getByRole('menuitem', { name: 'Export' }))
+  await waitFor(() =>{  expect(document.activeElement).toBe(trigger) })
+  expect(run).toHaveBeenCalledExactlyOnceWith('clicked')
+  expect(view.queryByRole('menu')).toBeNull()
+  fireEvent.click(trigger)
+  fireEvent.keyDown(document, { key: 'Escape' })
+  expect(view.queryByRole('menu')).toBeNull()
+  fireEvent.click(trigger)
+  fireEvent.pointerDown(document.body)
+  expect(view.queryByRole('menu')).toBeNull()
+})
+
+it('renders disabled, grouped and nested data actions and keeps feedback after menu dismissal', () => {
+  vi.useFakeTimers()
+  const store = createMenuStore().create(), select = vi.fn()
+  store.actions.open({ kind: 'session', value: { sessionId: SessionId('clicked'), displayTitle: 'Clicked' } }, { x: 20, y: 30 })
+  store.actions.items([
+    { id: 'plain', label: 'Open' },
+    { id: 'blocked', label: 'Unavailable', disabled: true, danger: true, separatorBefore: true },
+    { id: 'parent', label: 'Export', children: [{ id: 'child', label: 'Original' }, { id: 'other', label: 'Other', separatorBefore: true }] },
+    { id: 'footer', label: 'Folder', afterContent: true },
+  ])
+  const view = render(<MenuOverlay useCatalog={select => select([])} useStore={bindSnapshotSelector(store)} actions={store.actions}
+    close={() => { store.actions.close() }} select={select} renderSlot={() => null} />)
+  expect(view.getByRole('menuitem', { name: 'Unavailable' }).hasAttribute('disabled')).toBe(true)
+  fireEvent.click(view.getByRole('menuitem', { name: 'Open' }))
+  expect(select).toHaveBeenCalledWith('plain')
+  fireEvent.click(view.getByRole('menuitem', { name: 'Export' }))
+  expect(view.getAllByRole('separator')).toHaveLength(2)
+  fireEvent.click(view.getByRole('menuitem', { name: 'Original' }))
+  expect(select).toHaveBeenCalledWith('child')
+  act(() => { store.actions.exit(true) })
+  expect(document.querySelector('[data-menu-phase="replace"]')).not.toBeNull()
+  act(() => { store.actions.exit(false) })
+  expect(document.querySelector('[data-menu-phase="dismiss"]')).not.toBeNull()
+  const reveal = vi.fn()
+  act(() => { store.actions.close(); store.actions.notify({ id: 1, text: 'Saved', success: true,
+    action: { label: 'Show in Finder', onClick: reveal } }) })
+  expect(view.queryByRole('menu')).toBeNull()
+  expect(view.getByRole('alert').textContent).toBe('SavedShow in Finder')
+  fireEvent.click(view.getByRole('button', { name: 'Show in Finder' }))
+  expect(reveal).toHaveBeenCalledOnce()
+  act(() => { store.actions.notify({ id: 2, text: 'Copy failed', success: false }) })
+  expect(view.getByRole('alert').textContent).toBe('Copy failed')
+  expect(view.queryByRole('button', { name: 'Show in Finder' })).toBeNull()
+  act(() => { vi.advanceTimersByTime(4000) })
+  expect(view.queryByRole('alert')).toBeNull()
+})
+
+function PluginIcon({ icon }: PropsRuntime<'contextMenu.icon'>) {
+  return <img data-testid="plugin-icon" src={icon.src} alt="" />
+}
+
+it('dispatches captured icon keys in rows, submenus and footers and retires renderer registrations on unload', async () => {
+  const runtime = await SlotTestRuntime.create()
+  onTestFinished(() => runtime.dispose())
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) } as never)
+  runtime.ctx.provide('locale', { register: () => () => {}, bind: () => (key: string) => key } as never)
+  await runtime.root.declare({ 'shell.overlay': { kind: 'list', scope: 'root' } }, ({ renderSlot }) =>
+    <>{renderSlot('shell.overlay', {})}</>)
+  const menuPlugin = await runtime.mount({ inject, apply })
+  const run = vi.fn()
+  const contribution = await runtime.mount({ inject: ['contextMenus'], apply(ctx) {
+    ctx.effect(() => ctx.contextMenus.register({ id: 'icons', target: 'session', order: 0, resolve: () => [
+      { id: 'row', label: 'Open', icon: { key: 'example.icon', src: '/captured.png' }, run },
+      { id: 'parent', label: 'Export', children: [{ id: 'child', label: 'Original', icon: { key: 'example.icon' } }] },
+      { id: 'footer', label: 'Footer', afterContent: true, icon: { key: 'example.icon' } },
+    ] }))
+  } })
+  const icons = await runtime.mount({ inject: ['slots'], apply(ctx) {
+    ctx.slots.inject('contextMenu.icon', function* () {
+      yield ctx.slots.register({ name: 'contextMenu.icon', key: 'example.icon' }, PluginIcon)
+      yield ctx.slots.register({ name: 'contextMenu.icon', key: 'example.unused' }, () => <span>Unused icon</span>)
+    })
+  } })
+  const view = runtime.renderRoot()
+  const open = () => { runtime.ctx.contextMenus.open({ kind: 'session', value: {
+    sessionId: SessionId('icons'), displayTitle: 'Icons',
+  } }, { x: 20, y: 30 }) }
+  act(open)
+  await waitFor(() => { expect(view.getAllByTestId('plugin-icon')).toHaveLength(2) })
+  expect(view.getByRole('menuitem', { name: 'Open' }).querySelector('img')?.getAttribute('src')).toBe('/captured.png')
+  expect(view.queryByText('Unused icon')).toBeNull()
+  fireEvent.click(view.getByRole('menuitem', { name: 'Export' }))
+  expect(view.getByRole('menuitem', { name: 'Original' }).querySelector('img')).not.toBeNull()
+  await icons.dispose()
+  expect(view.queryAllByTestId('plugin-icon')).toHaveLength(0)
+  fireEvent.click(view.getByRole('menuitem', { name: 'Open' }))
+  expect(run).toHaveBeenCalledOnce()
+  await contribution.dispose()
+  await menuPlugin.dispose()
+  expect(runtime.slots.spec('contextMenu.icon')).toBeUndefined()
+})
+
+it('tracks configured shortcuts for nested and footer actions without invoking command dispatch', () => {
+  const shortcuts = new ShortcutRegistry('desktop', 'macos')
+  const commandId = 'session.rename' as ShortcutCommandId
+  const resolveCommand = vi.fn(() => ({ status: 'pass' as const }))
+  const remove = shortcuts.register({ id: commandId, label: () => 'Rename', aliases: [],
+    defaults: { 'desktop:macos': { code: 'KeyG', modifiers: ['primary', 'alt'] } },
+    regions: ['page'], modals: [], resolve: resolveCommand })
+  const store = createMenuStore().create()
+  store.actions.open({ kind: 'session', value: { sessionId: SessionId('captured'), displayTitle: 'Captured' } }, { x: 30, y: 40 })
+  store.actions.items([
+    { id: 'rename', label: 'Rename', commandId },
+    { id: 'missing', label: 'Unknown command', commandId: 'absent' as ShortcutCommandId },
+    { id: 'parent', label: 'Submenu', children: [{ id: 'nested', label: 'Nested', commandId }] },
+    { id: 'footer', label: 'Footer', commandId, afterContent: true },
+  ])
+  const select = vi.fn()
+  const view = render(<MenuOverlay useStore={bindSnapshotSelector(store)} actions={store.actions}
+    useCatalog={bindSnapshotSelector(shortcuts.catalog)} close={vi.fn()} select={select} renderSlot={() => null} />)
+  const item = view.getByRole('menuitem', { name: 'Rename' })
+  expect(item.getAttribute('aria-keyshortcuts')).toBe('Alt+Meta+G')
+  expect(view.getByRole('menuitem', { name: 'Unknown command' }).getAttribute('aria-keyshortcuts')).toBeNull()
+  act(() => { shortcuts.configure({ ...shortcuts.config.getSnapshot(), revision: 'custom' as never,
+    document: { schemaVersion: 2, profiles: { 'desktop:macos': { 'session.rename': { code: 'KeyR', modifiers: ['primary', 'shift'] } } } } }) })
+  expect(item.getAttribute('aria-keyshortcuts')).toBe('Shift+Meta+R')
+  expect(view.getByRole('menuitem', { name: 'Footer' }).getAttribute('aria-keyshortcuts')).toBe('Shift+Meta+R')
+  fireEvent.click(view.getByRole('menuitem', { name: 'Submenu' }))
+  expect(view.getByRole('menuitem', { name: 'Nested' }).getAttribute('aria-keyshortcuts')).toBe('Shift+Meta+R')
+  act(() => { shortcuts.configure({ ...shortcuts.config.getSnapshot(), revision: 'unbound' as never,
+    document: { schemaVersion: 2, profiles: { 'desktop:macos': { 'session.rename': null } } } }) })
+  expect(item.getAttribute('aria-keyshortcuts')).toBeNull()
+  expect(item.querySelector('kbd')).toBeNull()
+  act(remove)
+  expect(item.getAttribute('aria-keyshortcuts')).toBeNull()
+  fireEvent.click(item)
+  expect(select).toHaveBeenCalledWith('rename')
+  expect(resolveCommand).not.toHaveBeenCalled()
+})
diff --git a/packages/client/ui-context-menu/tests/plugin.client.spec.ts b/packages/client/ui-context-menu/tests/plugin.client.spec.ts
new file mode 100644
index 0000000000..afd3d97350
--- /dev/null
+++ b/packages/client/ui-context-menu/tests/plugin.client.spec.ts
@@ -0,0 +1,197 @@
+// @vitest-environment jsdom
+import type { MenuAction } from '../src/client/types.ts'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { Context } from '@deepseek-ai/cordis'
+import { afterEach, expect, it, vi } from 'vitest'
+import type { SlotRegistry } from '@deepseek-ai/dsh-client-ui-renderer/client'
+import type { MenuOverlayInjected } from '../src/client/View.tsx'
+import { apply, inject } from '../src/client/index.ts'
+import { apply as hostApply } from '../src/index.ts'
+import type { createMenuStore } from '../src/client/store.ts'
+
+afterEach(() => { vi.useRealTimers() })
+
+declare module '@deepseek-ai/dsh-client-ui-context-menu/client' {
+  interface ContextMenuTargetMap { pluginDocument: { readonly id: string } }
+}
+
+it('lets an external contribution open another menu and withdraws its actions when its fiber unloads', async () => {
+  const ctx = new Context()
+  ctx.provide('shortcuts', { catalog: createSnapshotStore([]) } as never)
+  let overlay!: MenuOverlayInjected
+  let store!: ReturnType<ReturnType<typeof createMenuStore>['create']>
+  ctx.provide('slots', { provideRoot: () => () => {},
+    inject: (_name: string, register: Parameters<SlotRegistry['inject']>[1]) => ctx.effect(register),
+    register: (entry: { inject: () => MenuOverlayInjected; store: ReturnType<typeof createMenuStore> }) => {
+      overlay = entry.inject(); store = entry.store.create(); return () => {}
+    },
+  } as never)
+  ctx.provide('locale', { register: () => () => {}, bind: () => (key: string) => key } as never)
+  const menuFiber = ctx.plugin({ inject, apply })
+  await menuFiber.await()
+  expect(hostApply).not.toThrow()
+  const run = vi.fn()
+  const contribution = ctx.plugin({ inject: ['contextMenus'], apply: (plugin: Context) => {
+    plugin.effect(() => plugin.contextMenus.register({
+      target: 'pluginDocument', id: 'example.document', order: 0,
+      resolve: ({ id }) => [{ id: 'inspect', label: id, run: () => {
+        run(id)
+        plugin.contextMenus.open({ kind: 'pluginDocument', value: { id: 'next' } }, { x: 3, y: 4 })
+      } }],
+    }))
+  } })
+  await contribution.await()
+  try {
+    ctx.contextMenus.open({ kind: 'pluginDocument', value: { id: 'clicked' } }, { x: 1, y: 2 })
+    await vi.waitFor(() => { expect(store.getSnapshot().items.length).toBeGreaterThan(0) })
+    overlay.select('example.document/inspect')
+    expect(run).toHaveBeenCalledExactlyOnceWith('clicked')
+    expect(ctx.contextMenus.active.getSnapshot()).toEqual({ kind: 'pluginDocument', value: { id: 'next' } })
+    const occurrence = ctx.contextMenus.resolve({ kind: 'pluginDocument', value: { id: 'retained' } })
+    expect(occurrence.source.getSnapshot().map(action => action.label)).toEqual(['retained'])
+    await contribution.dispose()
+    expect(occurrence.source.getSnapshot()).toEqual([])
+    occurrence.select('example.document/inspect')
+    expect(run).toHaveBeenCalledOnce()
+    occurrence.dispose()
+    ctx.contextMenus.notify('Saved', true)
+    expect(store.getSnapshot().notice).toMatchObject({ text: 'Saved', success: true })
+    ctx.contextMenus.notify('Unavailable')
+    expect(store.getSnapshot().notice).toMatchObject({ text: 'Unavailable', success: false })
+    const reveal = vi.fn(async () => {})
+    ctx.contextMenus.notify('Saved', true, { label: 'Show in folder', run: reveal, failureLabel: 'Reveal failed' })
+    const previousAction = store.getSnapshot().notice!.action!
+    expect(previousAction.label).toBe('Show in folder')
+    previousAction.onClick()
+    previousAction.onClick()
+    expect(reveal).toHaveBeenCalledOnce()
+    expect(store.getSnapshot().notice).toBeNull()
+    ctx.contextMenus.notify('Saved again', true, { label: 'Show in folder', run: reveal, failureLabel: 'Reveal failed' })
+    const replaced = store.getSnapshot().notice!.action!
+    ctx.contextMenus.notify('New notice')
+    replaced.onClick()
+    expect(reveal).toHaveBeenCalledOnce()
+    for (const fail of [() => { throw new Error('denied') }, async () => { throw new Error('offline') }]) {
+      ctx.contextMenus.notify('Saved', true, { label: 'Show in folder', run: fail, failureLabel: 'Reveal failed' })
+      store.getSnapshot().notice!.action!.onClick()
+      await vi.waitFor(() => { expect(store.getSnapshot().notice).toMatchObject({ text: 'Reveal failed', success: false }) })
+    }
+    const removeFailure = ctx.contextMenus.register({ target: 'pluginDocument', id: 'failure', order: 0,
+      resolve: () => { throw new Error('Metadata unavailable') } })
+    ctx.contextMenus.open({ kind: 'pluginDocument', value: { id: 'failed' } }, { x: 0, y: 0 })
+    expect(store.getSnapshot().notice?.text).toBe('failed')
+    removeFailure()
+    const removeAction = ctx.contextMenus.register({ target: 'pluginDocument', id: 'action', order: 0,
+      resolve: () => [{ id: 'copy', label: 'Copy', failureLabel: 'Copy failed', run: () => { throw new Error('Denied') } }] })
+    ctx.contextMenus.open({ kind: 'pluginDocument', value: { id: 'failed-action' } }, { x: 0, y: 0 })
+    overlay.select('action/copy')
+    expect(store.getSnapshot().notice?.text).toBe('Copy failed')
+    removeAction()
+  } finally { await contribution.dispose(); await menuFiber.dispose() }
+})
+
+it('waits for metadata, toggles nearby repeated gestures, replaces occurrences, and cancels pending openings', async () => {
+  vi.useFakeTimers()
+  const ctx = new Context()
+  ctx.provide('shortcuts', { catalog: createSnapshotStore([]) } as never)
+  let store!: ReturnType<ReturnType<typeof createMenuStore>['create']>
+  ctx.provide('slots', { provideRoot: () => () => {},
+    inject: (_name: string, register: Parameters<SlotRegistry['inject']>[1]) => ctx.effect(register),
+    register: (entry: { store: ReturnType<typeof createMenuStore> }) => { store = entry.store.create(); return () => {} },
+  } as never)
+  ctx.provide('locale', { register: () => () => {}, bind: () => (key: string) => key } as never)
+  const fiber = ctx.plugin({ inject, apply })
+  await fiber.await()
+  let finish!: (actions: readonly MenuAction[]) => void
+  ctx.contextMenus.register({ target: 'pluginDocument', id: 'slow', order: 0,
+    resolve: () => new Promise((resolve) => { finish = resolve }) })
+  const target = { kind: 'pluginDocument' as const, value: { id: 'file' } }
+  try {
+    ctx.contextMenus.open(target, { x: 20, y: 30 })
+    await vi.advanceTimersByTimeAsync(100)
+    expect(store.getSnapshot().target).toBeNull()
+    finish([{ id: 'open', label: 'Open' }])
+    await vi.advanceTimersByTimeAsync(0)
+    expect(store.getSnapshot().items.map(item => item.label)).toEqual(['Open'])
+    const first = store.getSnapshot().occurrence
+    ctx.contextMenus.open(target, { x: 22, y: 31 })
+    expect(ctx.contextMenus.active.getSnapshot()).toBeNull()
+    expect(store.getSnapshot().closing).toBe(true)
+    await vi.advanceTimersByTimeAsync(80)
+    expect(store.getSnapshot().target).toBeNull()
+    ctx.contextMenus.open(target, { x: 80, y: 30 })
+    finish([{ id: 'second', label: 'Second' }])
+    await vi.advanceTimersByTimeAsync(40)
+    expect(store.getSnapshot().occurrence).toBe(first + 1)
+    ctx.contextMenus.open(target, { x: 180, y: 30 })
+    expect(store.getSnapshot().replacing).toBe(true)
+    document.body.dispatchEvent(new Event('pointerdown', { bubbles: true }))
+    finish([{ id: 'late', label: 'Late' }])
+    await vi.advanceTimersByTimeAsync(100)
+    expect(store.getSnapshot().target).toBeNull()
+    ctx.contextMenus.open(target, { x: 20, y: 30 })
+    document.dispatchEvent(new KeyboardEvent('keydown', { key: 'Escape' }))
+    finish([{ id: 'escape', label: 'Escape' }])
+    await vi.advanceTimersByTimeAsync(100)
+    expect(store.getSnapshot().target).toBeNull()
+  } finally { await fiber.dispose() }
+})
+
+it('keeps trigger focus through replacement and ignores non-dismissal events and late feedback', async () => {
+  vi.useFakeTimers()
+  const ctx = new Context()
+  ctx.provide('shortcuts', { catalog: createSnapshotStore([]) } as never)
+  let overlay!: MenuOverlayInjected
+  ctx.provide('slots', { provideRoot: () => () => {},
+    inject: (_name: string, register: Parameters<SlotRegistry['inject']>[1]) => ctx.effect(register),
+    register: (entry: { inject: () => MenuOverlayInjected }) => { overlay = entry.inject(); return () => {} },
+  } as never)
+  ctx.provide('locale', { register: () => () => {}, bind: () => (key: string) => key } as never)
+  const fiber = ctx.plugin({ inject, apply })
+  await fiber.await()
+  const notify = ctx.contextMenus.notify.bind(ctx.contextMenus)
+  ctx.contextMenus.register({ target: 'pluginDocument', id: 'plain', order: 0, resolve: () => [{ id: 'copy', label: 'Copy' }] })
+  const trigger = document.createElement('button'), menu = document.createElement('button')
+  menu.setAttribute('data-context-menu', '')
+  menu.setAttribute('role', 'menu')
+  document.body.append(trigger, menu)
+  try {
+    trigger.focus()
+    ctx.contextMenus.open({ kind: 'pluginDocument', value: { id: 'first' } }, { x: 10, y: 10 })
+    await vi.advanceTimersByTimeAsync(40)
+    expect(overlay.returnFocus?.()).toBe(trigger)
+    menu.focus()
+    ctx.contextMenus.open({ kind: 'pluginDocument', value: { id: 'second' } }, { x: 80, y: 80 })
+    await vi.advanceTimersByTimeAsync(40)
+    expect(overlay.returnFocus?.()).toBe(trigger)
+    menu.dispatchEvent(new MouseEvent('pointerdown', { bubbles: true, button: 2 }))
+    menu.dispatchEvent(new MouseEvent('pointerdown', { bubbles: true, button: 0 }))
+    document.dispatchEvent(new KeyboardEvent('keydown', { key: 'ArrowDown' }))
+    expect(ctx.contextMenus.active.getSnapshot()).not.toBeNull()
+    document.dispatchEvent(new MouseEvent('contextmenu', { cancelable: true }))
+    expect(ctx.contextMenus.active.getSnapshot()).toBeNull()
+    const handled = new MouseEvent('contextmenu', { cancelable: true }); handled.preventDefault()
+    document.dispatchEvent(handled)
+    document.dispatchEvent(new Event('pointerdown'))
+    expect(ctx.contextMenus.active.getSnapshot()).toBeNull()
+    const active = vi.spyOn(document, 'activeElement', 'get').mockReturnValue(null)
+    ctx.contextMenus.open({ kind: 'pluginDocument', value: { id: 'third' } }, { x: 80, y: 80 })
+    active.mockRestore()
+    expect(overlay.returnFocus?.()).toBeNull()
+  } finally { trigger.remove(); menu.remove(); await fiber.dispose() }
+  notify('late')
+})
+
+it('leaves unbound keyboard gestures native', async () => {
+  const ctx = new Context()
+  ctx.provide('shortcuts', { catalog: createSnapshotStore([]) } as never)
+  ctx.provide('slots', { provideRoot: () => () => {}, inject: () => () => {} } as never)
+  ctx.provide('locale', { register: () => () => {}, bind: () => (key: string) => key } as never)
+  const fiber = ctx.plugin({ inject, apply })
+  await fiber.await()
+  try {
+    const event = new KeyboardEvent('keydown', { key: 'ContextMenu', bubbles: true, cancelable: true })
+    document.dispatchEvent(event)
+    expect(event.defaultPrevented).toBe(false)
+  } finally { await fiber.dispose() }
+})
diff --git a/packages/client/ui-context-menu/tests/registry.client.spec.ts b/packages/client/ui-context-menu/tests/registry.client.spec.ts
new file mode 100644
index 0000000000..c533f3b49d
--- /dev/null
+++ b/packages/client/ui-context-menu/tests/registry.client.spec.ts
@@ -0,0 +1,218 @@
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { describe, expect, it, vi } from 'vitest'
+import { MenuRegistry } from '../src/client/registry.ts'
+import type { MenuAction } from '@deepseek-ai/dsh-client-ui-context-menu/client'
+
+declare module '@deepseek-ai/dsh-client-ui-context-menu/client' {
+  interface ContextMenuTargetMap { extension: { readonly id: string } }
+}
+const target = { kind: 'extension' as const, value: { id: 'clicked' } }
+
+function deferred<T>() {
+  let resolve!: (value: T) => void
+  let reject!: (error: Error) => void
+  const promise = new Promise<T>((yes, no) => { resolve = yes; reject = no })
+  return { promise, resolve, reject }
+}
+
+describe('menu contribution lifecycle', () => {
+  it('orders independently resolved contributions and executes the captured target once', async () => {
+    const failure = vi.fn(), run = vi.fn()
+    const registry = new MenuRegistry(failure)
+    const waiting = deferred<readonly MenuAction[]>()
+    registry.register({ id: 'later', target: 'extension', order: 20, resolve: () => waiting.promise })
+    registry.register({ id: 'first', target: 'extension', order: 10, resolve: ({ id }) => [{ id: 'open', label: id, run: () => { run(id) } }] })
+    const menu = registry.resolve(target)
+    expect(menu.source.getSnapshot().map(x => x.id)).toEqual(['first/open'])
+    waiting.resolve([{ id: 'open', label: 'Later' }]); await waiting.promise
+    expect(menu.source.getSnapshot().map(x => x.id)).toEqual(['first/open', 'later/open'])
+    expect(JSON.parse(JSON.stringify(menu.source.getSnapshot()))).toEqual(menu.source.getSnapshot())
+    menu.select('first/open'); menu.select('first/open')
+    expect(run).toHaveBeenCalledExactlyOnceWith('clicked')
+    expect(failure).not.toHaveBeenCalled()
+    registry.dispose()
+  })
+
+  it.each(['menu', 'provider', 'registry'] as const)('aborts pending metadata when its %s retires', async (retire) => {
+    const failure = vi.fn(), run = vi.fn()
+    const registry = new MenuRegistry(failure)
+    const waiting = deferred<readonly MenuAction[]>()
+    let signal!: AbortSignal
+    const remove = registry.register({ id: 'slow', target: 'extension', order: 0, resolve: (_target, lifetime) => { signal = lifetime; return waiting.promise } })
+    const menu = registry.resolve(target)
+    if (retire === 'menu') menu.dispose()
+    if (retire === 'provider') remove()
+    if (retire === 'registry') registry.dispose()
+    expect(signal.aborted).toBe(true)
+    waiting.resolve([{ id: 'late', label: 'Late', run }]); await waiting.promise
+    expect(menu.source.getSnapshot()).toEqual([])
+    menu.select('slow/late')
+    expect(run).not.toHaveBeenCalled()
+    expect(failure).not.toHaveBeenCalled()
+    menu.dispose(); remove(); registry.dispose()
+  })
+
+  it('withdraws resolved actions on unload and takes new contributions on the next opening', () => {
+    const registry = new MenuRegistry(vi.fn()), run = vi.fn()
+    const remove = registry.register({ id: 'old', target: 'extension', order: 0, resolve: () => [{ id: 'a', label: 'A', run }] })
+    const first = registry.resolve(target)
+    remove(); remove()
+    expect(first.source.getSnapshot()).toEqual([])
+    first.select('old/a'); expect(run).not.toHaveBeenCalled()
+    registry.register({ id: 'new', target: 'extension', order: 0, resolve: () => [{ id: 'b', label: 'B' }] })
+    expect(first.source.getSnapshot()).toEqual([])
+    const next = registry.resolve(target)
+    expect(next.source.getSnapshot()[0]?.id).toBe('new/b')
+    first.dispose(); next.dispose(); registry.dispose()
+    expect(() => registry.resolve(target)).toThrow('disposed')
+  })
+
+  it('contains provider failure and rejects duplicate contributions without corrupting other actions', async () => {
+    const failed = vi.fn(), run = vi.fn(), registry = new MenuRegistry(failed)
+    const definition = { id: 'good', target: 'extension' as const, order: 0, resolve: () => [{ id: 'a', label: 'A', run }] }
+    registry.register(definition)
+    expect(() => registry.register(definition)).toThrow('Duplicate menu contribution')
+    registry.register({ id: 'bad', target: 'extension', order: 1, resolve: () => [{ id: 'a', label: 'A' }, { id: 'a', label: 'B' }] })
+    registry.register({ id: 'rejected', target: 'extension', order: 2, resolve: () => Promise.reject(new Error('unavailable')) })
+    const menu = registry.resolve(target)
+    await Promise.resolve(); await Promise.resolve()
+    expect(failed).toHaveBeenCalledTimes(2)
+    expect(menu.source.getSnapshot().map(x => x.id)).toEqual(['good/a'])
+    menu.select('bad/a'); expect(run).not.toHaveBeenCalled()
+    menu.select('good/a'); expect(run).toHaveBeenCalledOnce()
+    registry.dispose()
+  })
+
+  it('ignores disabled, submenu and unknown selections and reports an action rejection', async () => {
+    const failed = vi.fn(), run = vi.fn(), registry = new MenuRegistry(failed)
+    registry.register({ id: 'actions', target: 'extension', order: 0, resolve: () => [
+      { id: 'disabled', label: 'Disabled', disabled: true, run },
+      { id: 'parent', label: 'Parent', children: [{ id: 'child', label: 'Child', run: () => Promise.reject(new Error('failed')) }], run },
+    ] })
+    const menu = registry.resolve(target)
+    menu.select('missing'); menu.select('actions/disabled'); menu.select('actions/parent')
+    expect(run).not.toHaveBeenCalled()
+    menu.select('actions/parent/child'); await Promise.resolve(); await Promise.resolve()
+    expect(failed).toHaveBeenCalledOnce()
+    registry.dispose()
+  })
+
+  it('orders equal-priority providers by identity and contains synchronous action failures', () => {
+    const failed = vi.fn(), registry = new MenuRegistry(failed)
+    registry.register({ id: 'z', target: 'extension', order: 1, resolve: () => [{ id: 'none', label: 'No action' }] })
+    registry.register({ id: 'a', target: 'extension', order: 1, resolve: () => [{ id: 'throw', label: 'Fail',
+      failureLabel: 'Could not copy. Try again.', run: () => { throw new Error('clipboard denied') } }] })
+    const first = registry.resolve(target)
+    expect(first.source.getSnapshot().map(item => item.id)).toEqual(['a/throw', 'z/none'])
+    first.select('a/throw')
+    expect(failed).toHaveBeenCalledWith('Could not copy. Try again.')
+    const second = registry.resolve(target)
+    second.select('z/none')
+    registry.dispose()
+    expect(() => registry.register({ id: 'late', target: 'extension', order: 0, resolve: () => [] })).toThrow('disposed')
+  })
+
+  it('does not report cancelled metadata failures, including unload during resolution', async () => {
+    const failed = vi.fn(), registry = new MenuRegistry(failed)
+    let remove = () => {}
+    remove = registry.register({ id: 'self-removing', target: 'extension', order: 0, resolve: () => {
+      remove(); throw new Error('owner unloaded')
+    } })
+    const waiting = deferred<readonly MenuAction[]>()
+    registry.register({ id: 'late-rejection', target: 'extension', order: 1, resolve: () => waiting.promise })
+    const menu = registry.resolve(target)
+    menu.dispose()
+    waiting.reject(new Error('cancelled'))
+    await Promise.resolve(); await Promise.resolve()
+    expect(failed).not.toHaveBeenCalled()
+    registry.dispose()
+  })
+})
+
+it('omits a provider that misses its deadline and ignores its late result', async () => {
+  vi.useFakeTimers()
+  const failed = vi.fn(), registry = new MenuRegistry(failed, 50)
+  const waiting = deferred<readonly MenuAction[]>()
+  let signal!: AbortSignal
+  registry.register({ id: 'slow', target: 'extension', order: 0, resolve: (_target, value) => { signal = value; return waiting.promise } })
+  registry.register({ id: 'ready', target: 'extension', order: 1, resolve: () => [{ id: 'copy', label: 'Copy' }] })
+  const menu = registry.resolve(target)
+  try {
+    await vi.advanceTimersByTimeAsync(50)
+    await menu.ready
+    expect(signal.aborted).toBe(true)
+    expect(menu.source.getSnapshot().map(item => item.label)).toEqual(['Copy'])
+    expect(failed).toHaveBeenCalledOnce()
+    waiting.resolve([{ id: 'late', label: 'Late' }])
+    await waiting.promise
+    expect(menu.source.getSnapshot().map(item => item.label)).toEqual(['Copy'])
+  } finally { registry.dispose(); vi.useRealTimers() }
+})
+
+it('replaces observed actions and callbacks, cancels older preparation, and releases every subscription', async () => {
+  const input = createSnapshotStore(0)
+  const original = input.subscribe.bind(input)
+  const subscribe = vi.spyOn(input, 'subscribe')
+  const detach = vi.fn()
+  subscribe.mockImplementation((listener) => {
+    const off = original(listener)
+    return () => { detach(); off() }
+  })
+  const failed = vi.fn(), registry = new MenuRegistry(failed), run = vi.fn()
+  const old = deferred<readonly MenuAction[]>(), current = deferred<readonly MenuAction[]>()
+  const signals: AbortSignal[] = []
+  const resolve = vi.fn((_target: { id: string }, signal: AbortSignal) => {
+    signals.push(signal)
+    return input.getSnapshot() === 0 ? old.promise : current.promise
+  })
+  const remove = registry.register({ id: 'live', target: 'extension', order: 0, observe: () => [input], resolve })
+  const menu = registry.resolve(target)
+  try {
+    input.set(1)
+    expect(signals[0]?.aborted).toBe(true)
+    old.resolve([{ id: 'old', label: 'Old', run }])
+    await old.promise
+    expect(menu.source.getSnapshot()).toEqual([])
+    current.resolve([{ id: 'new', label: 'New', run }])
+    await menu.ready
+    expect(menu.source.getSnapshot().map(item => item.id)).toEqual(['live/new'])
+    menu.select('live/old')
+    expect(run).not.toHaveBeenCalled()
+    remove()
+    expect(detach).toHaveBeenCalledOnce()
+    expect(menu.source.getSnapshot()).toEqual([])
+    input.set(2)
+    expect(resolve).toHaveBeenCalledTimes(2)
+    expect(signals.every(signal => signal.aborted)).toBe(true)
+    expect(failed).not.toHaveBeenCalled()
+  } finally { menu.dispose(); registry.dispose() }
+  expect(detach).toHaveBeenCalledOnce()
+})
+
+it('withdraws invalid reactive updates and contains observation failure without retaining stale callbacks', () => {
+  const input = createSnapshotStore(false), failed = vi.fn(), run = vi.fn()
+  const registry = new MenuRegistry(failed)
+  registry.register({ id: 'live', target: 'extension', order: 0, observe: () => [input], resolve: () => {
+    if (input.getSnapshot()) throw new Error('No access')
+    return [{ id: 'run', label: 'Run', run }]
+  } })
+  registry.register({ id: 'broken', target: 'extension', order: 1, observe: () => { throw new Error('Unavailable') }, resolve: () => [] })
+  const menu = registry.resolve(target)
+  input.set(true)
+  expect(menu.source.getSnapshot()).toEqual([])
+  menu.select('live/run')
+  expect(run).not.toHaveBeenCalled()
+  expect(failed).toHaveBeenCalledTimes(2)
+  menu.dispose(); registry.dispose()
+})
+
+it('does not report an observation failure after its provider unloads', () => {
+  const failed = vi.fn(), registry = new MenuRegistry(failed)
+  let remove = () => {}
+  remove = registry.register({ id: 'removed', target: 'extension', order: 0,
+    observe: () => { remove(); throw new Error('Unloaded') }, resolve: () => [] })
+  const menu = registry.resolve(target)
+  expect(menu.source.getSnapshot()).toEqual([])
+  expect(failed).not.toHaveBeenCalled()
+  menu.dispose(); registry.dispose()
+})
diff --git a/packages/client/ui-context-menu/tests/target-key.client.spec.ts b/packages/client/ui-context-menu/tests/target-key.client.spec.ts
new file mode 100644
index 0000000000..0f6830f205
--- /dev/null
+++ b/packages/client/ui-context-menu/tests/target-key.client.spec.ts
@@ -0,0 +1,14 @@
+import { expect, it } from 'vitest'
+import { menuTargetKey } from '../src/client/target-key.ts'
+import type { ContextMenuTarget } from '../src/client/types.ts'
+
+declare module '@deepseek-ai/dsh-client-ui-context-menu/client' {
+  interface ContextMenuTargetMap { nested: { id: string; data: { a: number; b: readonly (string | null)[] } } }
+}
+
+it('compares JSON targets independently of object key insertion order while preserving arrays', () => {
+  const first: ContextMenuTarget = { kind: 'nested', value: { id: 'a', data: { a: 1, b: ['x', null] } } }
+  const second: ContextMenuTarget = { value: { data: { b: ['x', null], a: 1 }, id: 'a' }, kind: 'nested' }
+  expect(menuTargetKey(first)).toBe(menuTargetKey(second))
+  expect(menuTargetKey(first)).not.toBe(menuTargetKey({ kind: 'nested', value: { id: 'a', data: { a: 1, b: [null, 'x'] } } }))
+})
diff --git a/packages/client/ui-context-menu/tests/trigger.client.spec.tsx b/packages/client/ui-context-menu/tests/trigger.client.spec.tsx
new file mode 100644
index 0000000000..d83a906a3b
--- /dev/null
+++ b/packages/client/ui-context-menu/tests/trigger.client.spec.tsx
@@ -0,0 +1,100 @@
+// @vitest-environment jsdom
+import { act, cleanup, createEvent, fireEvent, render } from '@testing-library/react'
+import { afterEach, expect, it, onTestFinished, vi } from 'vitest'
+import { createPortal } from 'react-dom'
+import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { SessionId } from '@deepseek-ai/dsh-session/types'
+import { apply, inject } from '../src/client/index.ts'
+import { createContextMenuBindings } from '../src/client/trigger.ts'
+import type { ContextMenuTriggerProps, ContextMenuTarget } from '../src/client/types.ts'
+
+afterEach(cleanup)
+const target = (id: string): ContextMenuTarget => ({ kind: 'session', value: { sessionId: SessionId(id), displayTitle: id } })
+
+it('binds targets in loops, captures deferred identity before focus changes it, and composes existing handlers', () => {
+  const open = vi.fn(), previous = vi.fn(), clicked = vi.fn()
+  let selected = 'first'
+  const { getTriggerProps } = createContextMenuBindings(open, () => true)
+  const view = render(<>
+    {['one', 'two'].map(id => <button key={id} {...getTriggerProps(target(id), { onContextMenu: previous })}>{id}</button>)}
+    <button {...getTriggerProps(() => target(selected), { tabIndex: -1 })} onFocus={() => { selected = 'changed' }} onClick={clicked}>Captured</button>
+  </>)
+  for (const id of ['one', 'two']) {
+    fireEvent.contextMenu(view.getByRole('button', { name: id }), { clientX: 12, clientY: 23 })
+    expect(open).toHaveBeenLastCalledWith(target(id), { x: 12, y: 23 })
+  }
+  expect(previous).toHaveBeenCalledTimes(2)
+  const button = view.getByRole('button', { name: 'Captured' })
+  button.getBoundingClientRect = () => new DOMRect(30, 40, 50, 20)
+  const focus = vi.spyOn(button, 'focus')
+  fireEvent.keyDown(button, { key: 'F10', shiftKey: true })
+  expect(open).toHaveBeenLastCalledWith(target('first'), { x: 30, y: 60 })
+  expect(focus).toHaveBeenCalledWith({ preventScroll: true })
+  expect(button.tabIndex).toBe(-1)
+  expect(clicked).not.toHaveBeenCalled()
+  fireEvent.contextMenu(button)
+  expect(open).toHaveBeenLastCalledWith(target('changed'), { x: 30, y: 60 })
+})
+
+it('honors prevented and nested gestures, portals, repeats, composition, and missing targets', () => {
+  const open = vi.fn(), outer = vi.fn(), existing = vi.fn()
+  const bindings = createContextMenuBindings(open, () => true)
+  const parent = createContextMenuBindings(outer, () => true)
+  const inner = bindings.getTriggerProps(target('inner'))
+  const composed = bindings.getTriggerProps(target('second'), inner)
+  const view = render(<div {...parent.getTriggerProps(target('outer'))}>
+    <button {...composed}>Inner</button>
+    <button {...bindings.getTriggerProps(target('blocked'), {
+      onContextMenu: (event) => { event.preventDefault() }, onKeyDown: (event) => { event.preventDefault() },
+    })}>Blocked</button>
+    <button {...bindings.getTriggerProps(undefined, { onKeyDown: existing })}>Native</button>
+    {createPortal(<button {...inner}>Portal</button>, document.body)}
+  </div>)
+  const button = view.getByRole('button', { name: 'Inner' })
+  fireEvent.contextMenu(button, { clientX: 1, clientY: 2 })
+  fireEvent.keyDown(button, { key: 'ContextMenu' })
+  expect(open).toHaveBeenCalledTimes(2)
+  expect(open).toHaveBeenLastCalledWith(target('inner'), { x: 0, y: 0 })
+  fireEvent.contextMenu(view.getByRole('button', { name: 'Blocked' }))
+  fireEvent.keyDown(view.getByRole('button', { name: 'Blocked' }), { key: 'ContextMenu' })
+  for (const extra of [{ repeat: true }, { isComposing: true }, { ctrlKey: true }, { altKey: true }, { metaKey: true }, { key: 'Enter' }]) {
+    fireEvent.keyDown(button, { key: 'ContextMenu', ...extra })
+  }
+  const prevented = createEvent.contextMenu(button)
+  prevented.preventDefault(); fireEvent(button, prevented)
+  expect(open).toHaveBeenCalledTimes(2)
+  fireEvent.contextMenu(view.getByRole('button', { name: 'Portal' }), { clientX: 4, clientY: 5 })
+  expect(open).toHaveBeenCalledTimes(3)
+  expect(outer).not.toHaveBeenCalled()
+  fireEvent.keyDown(view.getByRole('button', { name: 'Native' }), { key: 'a' })
+  expect(existing).toHaveBeenCalledOnce()
+})
+
+it('injects the hook through the root Slot and withdraws both its prop and retained handlers on unload', async () => {
+  const runtime = await SlotTestRuntime.create()
+  onTestFinished(() => runtime.dispose())
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) } as never)
+  runtime.ctx.provide('locale', { register: () => () => {}, bind: () => (key: string) => key } as never)
+  let retained: ContextMenuTriggerProps = {}
+  let received = false
+  await runtime.root.declare({}, ({ useContextMenu }) => {
+    received = typeof useContextMenu === 'function'
+    if (!received) return null
+    retained = useContextMenu().getTriggerProps(target('injected'))
+    return <button {...retained}>Injected</button>
+  })
+  const plugin = await runtime.mount({ inject, apply })
+  const view = runtime.renderRoot()
+  expect(received).toBe(true)
+  act(() => { fireEvent.contextMenu(view.getByRole('button')) })
+  expect(runtime.ctx.contextMenus.active.getSnapshot()).toEqual(target('injected'))
+  const source = runtime.ctx.contextMenus.active
+  await plugin.dispose()
+  expect(received).toBe(false)
+  expect(source.getSnapshot()).toBeNull()
+  const detached = render(<button {...retained}>Retained</button>)
+  expect(fireEvent.contextMenu(detached.getByRole('button'))).toBe(true)
+  expect(fireEvent.keyDown(detached.getByRole('button'), { key: 'ContextMenu' })).toBe(true)
+  expect(source.getSnapshot()).toBeNull()
+})
diff --git a/packages/client/ui-context-menu/tsconfig.json b/packages/client/ui-context-menu/tsconfig.json
new file mode 100644
index 0000000000..e12f61a4c8
--- /dev/null
+++ b/packages/client/ui-context-menu/tsconfig.json
@@ -0,0 +1,45 @@
+{
+  "extends": "../../../tsconfig.base.client.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types"
+  },
+  "include": [
+    "src"
+  ],
+  "references": [
+    {
+      "path": "../../../vendor/cordis"
+    },
+    {
+      "path": "../../util/brand"
+    },
+    {
+      "path": "../../core/session"
+    },
+    {
+      "path": "../locale/tsconfig.client.json"
+    },
+    {
+      "path": "../store"
+    },
+    {
+      "path": "../ui-slots"
+    },
+    {
+      "path": "../ui-primitives"
+    },
+    {
+      "path": "../ui-dockkit"
+    },
+    {
+      "path": "../ui-layout"
+    },
+    {
+      "path": "../ui-renderer"
+    },
+    {
+      "path": "../shortcuts/tsconfig.client.json"
+    }
+  ]
+}
diff --git a/packages/client/ui-context-menu/tsdown.config.ts b/packages/client/ui-context-menu/tsdown.config.ts
new file mode 100644
index 0000000000..7aa03cebc1
--- /dev/null
+++ b/packages/client/ui-context-menu/tsdown.config.ts
@@ -0,0 +1,3 @@
+import { clientBundle } from '../tsdown.client.ts'
+
+export default clientBundle(import.meta.dirname, ['lib/types/index.js'])
diff --git a/packages/client/ui-conversation/README.i18n.yaml b/packages/client/ui-conversation/README.i18n.yaml
index 8f74c9dfc6..0f945d3708 100644
--- a/packages/client/ui-conversation/README.i18n.yaml
+++ b/packages/client/ui-conversation/README.i18n.yaml
@@ -21,11 +21,11 @@
   en: cc4dafd1aae02468
   zh: be6b67724b7ac4a3
 /deepseek-ai-dsh-client-ui-conversation/shell-and-standard-props:
-  en: 08cf047cee6419bd
-  zh: 1f464f059753eacb
+  en: 9b596b668979544a
+  zh: 159f24dfc8715c92
 /deepseek-ai-dsh-client-ui-conversation/temporary-composer-entries:
-  en: bb1244310f5c0382
-  zh: 824b84077432b559
+  en: 59cd63057dfb6eeb
+  zh: b2e2c86e810b7bb8
 /deepseek-ai-dsh-client-ui-conversation/model-experience:
   en: e0a05b73ba3e4318
   zh: dc85ab8433bb4456
diff --git a/packages/client/ui-conversation/README.md b/packages/client/ui-conversation/README.md
index 1fdfca0f3c..2002f10c1b 100644
--- a/packages/client/ui-conversation/README.md
+++ b/packages/client/ui-conversation/README.md
@@ -68,6 +68,8 @@ The existing semantic `DraftSnapshot` retains quote text and clipboard-coordinat
 <a id="shell-and-standard-props"></a>
 ## Shell and standard props
 
+Below 768px, Web view tabs align with the header's 20px left inset. Desktop and wider Web windows retain the additional 8px tab inset.
+
 The shared image slot props keep display choices separate from durable references: `thumbnail` requests a contained attachment-list thumbnail, while `compact` requests a cropped gallery tile. An optional per-image `label` supplies the accessible display name; loading and cache identity still use the original attachment reference. `MessageImagesContentInput` adds optional complete `MessageImageLabels` for the root-scoped `conversation.images.content` Factory. Message, tool, and Factory inputs carry the view's authorized `loadImage` callback explicitly; loading and URL caching remain with the resource owner. [ui-attachment](../ui-attachment/README.md) provides this Factory and owns rendering and the lightbox.
 
 The composer uses a minimum 16px draft font on coarse-pointer devices to avoid focus-triggered browser zoom; larger font preferences still apply.
@@ -182,6 +184,8 @@ The selector must be a pure function of the owner currency. Its non-null return
 
 `conversation.input.activity` hosts one control between the model selector and Send. Its `onActiveChange` callback expands that control across the toolbar and hides ordinary accessory controls and the context meter while preserving the editor and submit action. Closing the activity restores those controls with context details closed. The empty hero dock remains collapsed when it has no content. The occupant releases expansion on unmount and owns any activity-specific feedback.
 
+Session title context gestures use the shared [context menu](../ui-context-menu/README.md) with the clicked breadcrumb’s Session. The reusable image gallery receives `getTriggerProps` from its Factory’s injected `useContextMenu` hook.
+
 <a id="model-experience"></a>
 ## Model Experience
 
diff --git a/packages/client/ui-conversation/README.zh.md b/packages/client/ui-conversation/README.zh.md
index dd01ddf45b..b1d1c5fbd3 100644
--- a/packages/client/ui-conversation/README.zh.md
+++ b/packages/client/ui-conversation/README.zh.md
@@ -68,6 +68,8 @@ Queue 预览启用空白折叠和文档边缘 trim，保留 emoji，并使用 CS
 <a id="shell-and-standard-props"></a>
 ## Shell 与标准 props
 
+宽度小于 768px 时，Web 的 View 标签与页头的 20px 左内边距对齐。桌面客户端和较宽的 Web 窗口保留标签额外的 8px 左内边距。
+
 共享图片插槽属性将展示选择与持久化引用分开：`thumbnail` 请求完整缩放的附件列表缩略图，`compact` 请求裁剪的图片方块。每张图片可通过可选的 `label` 提供无障碍展示名称；加载和缓存标识仍使用原始附件引用。`MessageImagesContentInput` 为 root 作用域的 `conversation.images.content` Factory 增加可选的完整 `MessageImageLabels`。消息、工具及 Factory 输入显式携带视图提供的授权 `loadImage` 回调；读取和 URL 缓存仍由资源所有者负责。[ui-attachment](../ui-attachment/README.zh.md) 提供该 Factory，负责渲染与灯箱。
 
 在粗指针设备上，composer 的草稿字号至少为 16px，以避免获得焦点时浏览器自动放大；更大的字号偏好仍然生效。
@@ -182,6 +184,8 @@ selector 必须是 owner currency 的纯函数。非 null 返回值作为 `match
 
 `conversation.input.activity` 在模型选择器与发送按钮之间承载一个控件。其 `onActiveChange` 回调将控件展开至整条工具栏并隐藏普通辅助控件和上下文用量按钮，同时保留编辑器与提交按钮。关闭活动后恢复这些控件，上下文详情保持关闭。首页输入框下方没有内容时，该区域保持收起。占用者在卸载时释放展开状态，并拥有活动专属反馈。
 
+会话标题右键使用共享[右键菜单](../ui-context-menu/README.zh.md)，目标是被点击面包屑所属会话。可复用图片库从其 Factory 注入的 `useContextMenu` hook 获取 `getTriggerProps`。
+
 <a id="model-experience"></a>
 ## 模型体验
 
diff --git a/packages/client/ui-conversation/package.json b/packages/client/ui-conversation/package.json
index 78e1b39d8a..f168e7f6c8 100644
--- a/packages/client/ui-conversation/package.json
+++ b/packages/client/ui-conversation/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-conversation",
   "description": "Target-neutral Conversation assembly, shell, composer, queue, and view navigation",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -36,7 +36,8 @@
         "@deepseek-ai/dsh-client-ui-renderer",
         "@deepseek-ai/dsh-client-ui-session",
         "@deepseek-ai/dsh-client-ui-settings",
-        "@deepseek-ai/dsh-client-ui-workspace"
+        "@deepseek-ai/dsh-client-ui-workspace",
+        "@deepseek-ai/dsh-client-ui-context-menu"
       ],
       "platform": "web"
     }
@@ -97,7 +98,8 @@
     "@deepseek-ai/dsh-settings": "workspace:*",
     "@deepseek-ai/dsh-client-shortcuts": "workspace:*",
     "@deepseek-ai/dsh-client-product-analytics": "workspace:*",
-    "@deepseek-ai/dsh-message-quotes": "workspace:*"
+    "@deepseek-ai/dsh-message-quotes": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "files": [
     "locale/*.json",
diff --git a/packages/client/ui-conversation/src/client/apply.ts b/packages/client/ui-conversation/src/client/apply.ts
index b3c0d3bcd0..3328e1e5da 100644
--- a/packages/client/ui-conversation/src/client/apply.ts
+++ b/packages/client/ui-conversation/src/client/apply.ts
@@ -1,3 +1,4 @@
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /** Registers the target-neutral Conversation assembly, shell, input, and docks. */
 import type {} from '@deepseek-ai/dsh-client-product-analytics/client'
 import type { Context } from '@deepseek-ai/cordis'
diff --git a/packages/client/ui-conversation/src/client/contract/slots.ts b/packages/client/ui-conversation/src/client/contract/slots.ts
index caec4849b4..369f562a7b 100644
--- a/packages/client/ui-conversation/src/client/contract/slots.ts
+++ b/packages/client/ui-conversation/src/client/contract/slots.ts
@@ -475,6 +475,7 @@ export interface ConversationViewActionsOwnerProps {
 
 /** Business callbacks injected into the strict Session header. */
 export interface ConversationSessionHeaderInjected {
+  /** Open the clicked title's actions. */
   /** Package-owned View roster source bound only for the Conversation header. */
   readonly hooks: {
     readonly conversationViews: ObservableSnapshot<readonly ViewTab[]>
diff --git a/packages/client/ui-conversation/src/client/index.ts b/packages/client/ui-conversation/src/client/index.ts
index d4f06accc5..7a39200c30 100644
--- a/packages/client/ui-conversation/src/client/index.ts
+++ b/packages/client/ui-conversation/src/client/index.ts
@@ -1,3 +1,4 @@
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /** Browser Conversation assemble core, React adapter, shell, input, and text projection plugin. */
 export type {} from './user-text/session-reference-rule.ts'
 
diff --git a/packages/client/ui-conversation/src/client/skeleton/ConversationRoot.module.css b/packages/client/ui-conversation/src/client/skeleton/ConversationRoot.module.css
index ac6cb69f70..bf1a1e8d02 100644
--- a/packages/client/ui-conversation/src/client/skeleton/ConversationRoot.module.css
+++ b/packages/client/ui-conversation/src/client/skeleton/ConversationRoot.module.css
@@ -224,6 +224,12 @@
   padding-left: 8px;
 }
 
+@media (max-width: 767px) {
+  :global(html:not([data-platform])) .tabs {
+    padding-left: 0;
+  }
+}
+
 .viewTabs {
   display: flex;
   flex-wrap: wrap;
diff --git a/packages/client/ui-conversation/src/client/skeleton/ConversationSession.tsx b/packages/client/ui-conversation/src/client/skeleton/ConversationSession.tsx
index deaddcf769..14602cbca0 100644
--- a/packages/client/ui-conversation/src/client/skeleton/ConversationSession.tsx
+++ b/packages/client/ui-conversation/src/client/skeleton/ConversationSession.tsx
@@ -107,8 +107,9 @@ function equalBreadcrumbs(left: readonly Breadcrumb[], right: readonly Breadcrum
  */
 export function ConversationSessionHeader({
   sessionId, hideChrome, useSessions, useConversationViews, useStore,
-  renderSlot, open, selectView, setPinned, t, useEntryPins, useEntryActions,
+  renderSlot, open, useContextMenu, selectView, setPinned, t, useEntryPins, useEntryActions,
 }: ConversationSessionHeaderProps) {
+  const { getTriggerProps } = useContextMenu()
   const tabs = useConversationViews(value => value)
   const selectedId = useStore(s => s.view)
   const active = resolveActiveView(tabs, selectedId)
@@ -176,7 +177,7 @@ export function ConversationSessionHeader({
                     ...last ? {} : { openTitle: () => { open(summary.id) } },
                   }
                   return (
-                    <span key={summary.id} className={css.crumbSeg}>
+                    <span key={summary.id} className={css.crumbSeg} {...getTriggerProps({ kind: 'session', value: { sessionId: summary.id, displayTitle: summary.displayTitle } })}>
                       {index > 0 && <span className={css.crumbSep}>/</span>}
                       {lineage
                         ? summary.subagent
diff --git a/packages/client/ui-conversation/tests/apply-inject.client.spec.tsx b/packages/client/ui-conversation/tests/apply-inject.client.spec.tsx
index 523fcffaae..d968bdc4d8 100644
--- a/packages/client/ui-conversation/tests/apply-inject.client.spec.tsx
+++ b/packages/client/ui-conversation/tests/apply-inject.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { render, cleanup } from '@testing-library/react'
 import { $getRoot, $isTextNode, PASTE_COMMAND } from 'lexical'
 import { createUserTextFixture } from './user-text-component-fixture.client.tsx'
@@ -103,6 +104,8 @@ async function bench(renderQuote = false) {
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
   runtime.slots.installLocale(locale)
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   await runtime.root.declare({
     'main': { kind: 'keyed', scope: 'root' },
     'quote-probe': { kind: 'single', scope: 'session' },
diff --git a/packages/client/ui-conversation/tests/apply-wiring.client.spec.tsx b/packages/client/ui-conversation/tests/apply-wiring.client.spec.tsx
index a7b0bfdbdf..154d31ec9f 100644
--- a/packages/client/ui-conversation/tests/apply-wiring.client.spec.tsx
+++ b/packages/client/ui-conversation/tests/apply-wiring.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { describe, expect, it, vi } from 'vitest'
 import {
   SlotTestRuntime, stubConfigForm, usePinnedBrowserLanguages,
@@ -25,6 +26,8 @@ async function bench(options: { declareConversation?: boolean } = {}) {
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
   runtime.slots.installLocale(locale)
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   if (options.declareConversation !== false) {
     await runtime.root.declare({
       'main': { kind: 'keyed', scope: 'root' },
diff --git a/packages/client/ui-conversation/tests/assembly-surfaces.client.spec.tsx b/packages/client/ui-conversation/tests/assembly-surfaces.client.spec.tsx
index e4c2a2c037..c8e96efdbc 100644
--- a/packages/client/ui-conversation/tests/assembly-surfaces.client.spec.tsx
+++ b/packages/client/ui-conversation/tests/assembly-surfaces.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /** Conversation assembly acceptance independent of Tool presentation. */
 import './control-row-dom.ts'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
@@ -86,6 +87,8 @@ async function bench(opts?: { blank?: boolean }) {
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
   runtime.slots.installLocale(locale)
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   await runtime.sessions.add({
     id: SID,
     summary: { title: 'S', displayTitle: 'S', cwd: '/proj' },
@@ -109,6 +112,8 @@ describe('resident composer', () => {
     const locale = new LocaleRuntime(runtime.ctx)
     runtime.ctx.provide('locale', locale)
     runtime.slots.installLocale(locale)
+    runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+    await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
     await runtime.root.declare(LAYOUT_CHILDREN, AppRoot)
     await runtime.mount({ inject: [...inject], apply })
     runtime.slots.register({ name: 'conversation.hero.workspace' }, WorkspaceProbe)
@@ -136,6 +141,8 @@ describe('resident composer', () => {
     const locale = new LocaleRuntime(runtime.ctx)
     runtime.ctx.provide('locale', locale)
     runtime.slots.installLocale(locale)
+    runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+    await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
     await runtime.workspaces.update((draft) => {
       draft.items = [{ workspaceId: 'w1', title: 'Proj', path: '/proj', sessionIds: [SID] }] as never
     })
@@ -203,6 +210,8 @@ describe('prompt rejection through the assembled composer', () => {
     const locale = new LocaleRuntime(runtime.ctx)
     runtime.ctx.provide('locale', locale)
     runtime.slots.installLocale(locale)
+    runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+    await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
     const prompt = vi.fn<ISession['prompt']>(async () => ({
       ok: false,
       error: new RemoteError('session/agent-busy', 'prompt rejected before acceptance', { reason: 'busy' }),
diff --git a/packages/client/ui-conversation/tests/enter-behavior-row.client.spec.tsx b/packages/client/ui-conversation/tests/enter-behavior-row.client.spec.tsx
index f4b80c891c..3106eeb495 100644
--- a/packages/client/ui-conversation/tests/enter-behavior-row.client.spec.tsx
+++ b/packages/client/ui-conversation/tests/enter-behavior-row.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
@@ -47,6 +48,7 @@ function mount() {
     useResource,
     useWorkspaces: emptyWorkspaces(),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useBusyEnter: bindSnapshotSelector(policy.busyEnter),
     setBusyEnter,
     t: makeTranslate(en),
diff --git a/packages/client/ui-conversation/tests/header-styles.client.spec.ts b/packages/client/ui-conversation/tests/header-styles.client.spec.ts
index aa9a983654..4be70c648d 100644
--- a/packages/client/ui-conversation/tests/header-styles.client.spec.ts
+++ b/packages/client/ui-conversation/tests/header-styles.client.spec.ts
@@ -5,6 +5,12 @@ import { describe, expect, it } from 'vitest'
 const css = readFileSync(new URL('../src/client/skeleton/ConversationRoot.module.css', import.meta.url), 'utf8')
 
 describe('conversation header geometry', () => {
+  it('removes the extra tab inset only in narrow Web windows', () => {
+    const narrow = /@media \(max-width: 767px\) \{([\s\S]*?)\n\}/.exec(css)?.[1]
+    expect(narrow).toContain(':global(html:not([data-platform])) .tabs')
+    expect(narrow).toContain('padding-left: 0')
+  })
+
   it('keeps the single-line header at the shared 76px height', () => {
     expect(css.match(/\.header\s*\{([^}]*)\}/)?.[1]).toContain('min-height: 76px')
     expect(css.match(/\.viewTabs\s*\{([^}]*)\}/)?.[1]).toContain('min-height: 25px')
diff --git a/packages/client/ui-conversation/tests/input-bar.client.spec.tsx b/packages/client/ui-conversation/tests/input-bar.client.spec.tsx
index a657abf806..da4c7dc61b 100644
--- a/packages/client/ui-conversation/tests/input-bar.client.spec.tsx
+++ b/packages/client/ui-conversation/tests/input-bar.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 // InputBar behavior over the editor + submit-machine wiring: Enter-send
 // semantics (IME guard, Shift newline, busy Enter policy, Ctrl/Meta steering,
 // repeat suppression), running semantics (input stays free; continuable
@@ -195,6 +196,7 @@ function bench(over?: BenchOptions) {
       items: [], archivedSessionIds: [], pinnedSessionIds: [], state: 'idle', phase: 'ready', error: null,
     })),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useAccess: endpoint => !(over?.deniedEndpoints ?? []).includes(endpoint),
     useProjection: ((key: string, selector?: (v: unknown) => unknown) =>
       (selector ?? (v => v))(key === 'plan'
diff --git a/packages/client/ui-conversation/tests/input-matrix.client.spec.tsx b/packages/client/ui-conversation/tests/input-matrix.client.spec.tsx
index 6a18cede9a..517848498a 100644
--- a/packages/client/ui-conversation/tests/input-matrix.client.spec.tsx
+++ b/packages/client/ui-conversation/tests/input-matrix.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * Impact-matrix projection tests (row by row): what each
  * phase projects onto the InputBar — enter routing, visuals (command chip /
@@ -67,6 +68,7 @@ function mountBar(shell: SessionInputShell, over?: { running?: boolean; disabled
       baselinesReady: true, recentWorkspaceId: undefined,
     })),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useProjection: (() => undefined),
     useConversation: bindSnapshotSelector(createSnapshotStore(conversationSnapshot())),
     useInput: bindSnapshotSelector(shell.state),
diff --git a/packages/client/ui-conversation/tests/input-scenarios.client.spec.tsx b/packages/client/ui-conversation/tests/input-scenarios.client.spec.tsx
index 380097b5d1..2129c605d2 100644
--- a/packages/client/ui-conversation/tests/input-scenarios.client.spec.tsx
+++ b/packages/client/ui-conversation/tests/input-scenarios.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * Scenario-chain integration (scenarios A/C/D/H/I): the real per-session
  * InputTriggerController pipeline over a real session scope (Client Sessions over
@@ -169,6 +170,7 @@ async function scopedBench(register?: (inputTriggers: InputTriggerService) => vo
       baselinesReady: true, recentWorkspaceId: undefined,
     })),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useProjection: (() => undefined),
     useConversation: bindSnapshotSelector(createSnapshotStore(conversationSnapshot())),
     useInput: bindSnapshotSelector(shell.state),
diff --git a/packages/client/ui-conversation/tests/queue-dock.client.spec.tsx b/packages/client/ui-conversation/tests/queue-dock.client.spec.tsx
index 4583814093..44878bbc18 100644
--- a/packages/client/ui-conversation/tests/queue-dock.client.spec.tsx
+++ b/packages/client/ui-conversation/tests/queue-dock.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * QueueDock rendering and operations: authoritative rows, inline editing,
  * collapse state, removal, QueueDock Steer, failure notices, and live retirement.
@@ -118,6 +119,7 @@ function kitFor(snapshot: SessionSnapshot, injected: Partial<QueueDockInjected>
     ),
     useWorkspaces: (() => { throw new Error('unused') }) as never,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useProjection: (() => undefined) as never,
     useConversation: bindSnapshotSelector(createSnapshotStore(conversationSnapshot())),
     useChat: (() => { throw new Error('unused') }) as QueueDockProps['useChat'],
diff --git a/packages/client/ui-conversation/tests/skeleton.client.spec.tsx b/packages/client/ui-conversation/tests/skeleton.client.spec.tsx
index 2f7a1fd979..5f07662274 100644
--- a/packages/client/ui-conversation/tests/skeleton.client.spec.tsx
+++ b/packages/client/ui-conversation/tests/skeleton.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { createContext, useContext, type ReactNode } from 'react'
@@ -235,7 +236,7 @@ function mount(
           useTrajectory={useTrajectory}
           useSessions={props.useSessions}
           usePanelInfo={props.usePanelInfo}
-          useResource={useResource}
+          useContextMenu={contextMenuHook()} useResource={useResource}
           useSessionStatus={useSessionStatus}
           useSessionRetainInfo={() => undefined}
           useWorkspaces={props.useWorkspaces}
@@ -265,7 +266,7 @@ function mount(
           useTrajectory={useTrajectory}
           useSessions={props.useSessions}
           usePanelInfo={props.usePanelInfo}
-          useResource={useResource}
+          useContextMenu={contextMenuHook()} useResource={useResource}
           useSessionStatus={useSessionStatus}
           useSessionRetainInfo={() => undefined}
           useWorkspaces={props.useWorkspaces}
@@ -289,7 +290,7 @@ function mount(
         <InputBar
           sessionId={SID}
           SessionProvider={({ children }) => children}
-          useResource={useResource}
+          useContextMenu={contextMenuHook()} useResource={useResource}
           useSession={useSession}
           useConversation={useConversation}
           useSessions={props.useSessions}
@@ -353,6 +354,7 @@ function mount(
       useTrajectory,
       useSessions: bindSnapshotSelector(sessions),
       usePanelInfo: selector => selector({ activePanelId: null }),
+      useContextMenu: contextMenuHook(),
       useResource,
       useSessionStatus,
       useSessionRetainInfo: () => undefined,
@@ -386,6 +388,7 @@ function mount(
     useSessions: bindSnapshotSelector(sessions),
     useSessionStatus,
     useSessionRetainInfo: () => undefined,
+    useContextMenu: contextMenuHook(),
     useResource,
     useWorkspaces: bindSnapshotSelector(workspaces),
     ...allowAllAccess,
diff --git a/packages/client/ui-conversation/tests/user-text-component-fixture.client.tsx b/packages/client/ui-conversation/tests/user-text-component-fixture.client.tsx
index f4970b398d..c5383f3091 100644
--- a/packages/client/ui-conversation/tests/user-text-component-fixture.client.tsx
+++ b/packages/client/ui-conversation/tests/user-text-component-fixture.client.tsx
@@ -2,7 +2,7 @@
 import { Context } from '@deepseek-ai/cordis'
 import { createElement, type ComponentProps, type ReactNode } from 'react'
 import { onTestFinished } from 'vitest'
-import { bindSnapshotSelector, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { bindSnapshotSelector, contextMenuHook, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
 import type { UserTextInput, UserTextNodeOwnerProps } from '../src/client/contract/slots.ts'
 import type { UserTextNode } from '../src/client/contract/user-text.ts'
@@ -62,7 +62,7 @@ export function createUserTextFixture(actions: UserTextFixtureActions = {}): (in
       case 'secret': return createElement(SecretText, { ...owner, t } as ComponentProps<typeof SecretText>)
       case 'text': return createElement(PlainUserText, owner as ComponentProps<typeof PlainUserText>)
       case 'session': return createElement(SessionReference, owner as ComponentProps<typeof SessionReference>)
-      case 'file': return createElement(FileReference, { ...owner, openFile, t } as ComponentProps<typeof FileReference>)
+      case 'file': return createElement(FileReference, { ...owner, openFile, t, useContextMenu: contextMenuHook(), resolveFilePath: (path: string) => path } as ComponentProps<typeof FileReference>)
       case 'folder': return createElement(FolderReference, owner as ComponentProps<typeof FolderReference>)
       case 'skill': return createElement(SkillReference, { ...owner, openSkill } as ComponentProps<typeof SkillReference>)
       case 'command': return createElement(GoalCommandReference, owner as ComponentProps<typeof GoalCommandReference>)
diff --git a/packages/client/ui-conversation/tsconfig.client.json b/packages/client/ui-conversation/tsconfig.client.json
index 0339eebbe6..0187cf5d72 100644
--- a/packages/client/ui-conversation/tsconfig.client.json
+++ b/packages/client/ui-conversation/tsconfig.client.json
@@ -104,6 +104,9 @@
     },
     {
       "path": "../product-analytics/tsconfig.client.json"
+    },
+    {
+      "path": "../ui-context-menu"
     }
   ],
   "exclude": [
diff --git a/packages/client/ui-deliverables/README.i18n.yaml b/packages/client/ui-deliverables/README.i18n.yaml
index ff6839eee5..675bcff105 100644
--- a/packages/client/ui-deliverables/README.i18n.yaml
+++ b/packages/client/ui-deliverables/README.i18n.yaml
@@ -33,8 +33,8 @@
   en: 7ee5ee783902662c
   zh: fdf2c244fb22b8ab
 /deepseek-ai-dsh-client-ui-deliverables/further-exploration:
-  en: 476b59e8671db982
-  zh: b3d0495a03e8940a
+  en: 98eda99fafcb04b9
+  zh: e6a21254c0383f48
 /deepseek-ai-dsh-client-ui-deliverables/model-experience:
   en: 215e7ba838619b7b
   zh: a311da3843709f90
diff --git a/packages/client/ui-deliverables/README.md b/packages/client/ui-deliverables/README.md
index 6727c12776..0632574d83 100644
--- a/packages/client/ui-deliverables/README.md
+++ b/packages/client/ui-deliverables/README.md
@@ -86,6 +86,8 @@ Read these pages when the deliverables surface is not enough. They move from the
 
 -----
 
+Delivery cards and known inline file mentions expose a [context menu](../ui-context-menu/README.md) for their declared Session file, preserving the original path and optional line.
+
 <a id="model-experience"></a>
 ## Model Experience
 
diff --git a/packages/client/ui-deliverables/README.zh.md b/packages/client/ui-deliverables/README.zh.md
index 45484627dd..2951888e72 100644
--- a/packages/client/ui-deliverables/README.zh.md
+++ b/packages/client/ui-deliverables/README.zh.md
@@ -86,6 +86,8 @@ Node 半部提供经过身份验证的原生文件打开；共用指导由[模
 
 -----
 
+交付卡片和已知行内文件引用为其声明的会话文件提供[右键菜单](../ui-context-menu/README.zh.md)，保留原始路径和可选行号。
+
 <a id="model-experience"></a>
 ## 模型体验
 
diff --git a/packages/client/ui-deliverables/package.json b/packages/client/ui-deliverables/package.json
index 32cd775ef3..4172b1f4c2 100644
--- a/packages/client/ui-deliverables/package.json
+++ b/packages/client/ui-deliverables/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-deliverables",
   "description": "Changed-files card with per-file comparison tabs, delivery cards, and clickable final-response file references for Web",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -37,7 +37,8 @@
         "@deepseek-ai/dsh-client-ui-renderer",
         "@deepseek-ai/dsh-client-ui-sidebar-right",
         "@deepseek-ai/dsh-client-ui-tool",
-        "@deepseek-ai/dsh-client-ui-settings"
+        "@deepseek-ai/dsh-client-ui-settings",
+        "@deepseek-ai/dsh-client-ui-context-menu"
       ],
       "platform": "web"
     }
@@ -80,7 +81,8 @@
     "@deepseek-ai/dsh-fs-local": "workspace:*",
     "@deepseek-ai/dsh-agent": "workspace:*",
     "@deepseek-ai/dsh-sandbox-policy": "workspace:*",
-    "@deepseek-ai/dsh-client-ui-settings": "workspace:*"
+    "@deepseek-ai/dsh-client-ui-settings": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "files": [
     "locale/*.json",
diff --git a/packages/client/ui-deliverables/src/client/Deliverables.tsx b/packages/client/ui-deliverables/src/client/Deliverables.tsx
index 544e7a82b2..89cfa24afa 100644
--- a/packages/client/ui-deliverables/src/client/Deliverables.tsx
+++ b/packages/client/ui-deliverables/src/client/Deliverables.tsx
@@ -66,11 +66,12 @@ export function DeliverablesTail(props: PropsRuntime<'conversation.chat.turnTail
  * @returns the closing turn's file rows.
  */
 export function Deliverables({
-  matched, openFile, t, sessionId, useSessions, openPresented, openChangesReview, usePresentedOpen, usePresentedHost,
+  matched, openFile, useContextMenu, t, sessionId, useSessions, openPresented, openChangesReview, usePresentedOpen, usePresentedHost,
   useChangesDiff, loadChangesDiff, useChangesSummary, reloadPresentedHost, loadChangesSummary, useShowCodeDiff, renderSlot,
 }: Pick<TurnTailOwnerProps, 'openFile'> & {
   matched: DeliverablesMatch
-} & PropsLocale<typeof NS> & Pick<SessionStandardProps, 'sessionId'> & Pick<GlobalStandardProps, 'useSessions'> & InjectFace<DeliverablesInjected> & PropsRenderSlots<'deliverables.file.actions'>) {
+} & PropsLocale<typeof NS> & Pick<SessionStandardProps, 'sessionId'> & Pick<GlobalStandardProps, 'useSessions' | 'useContextMenu'> & InjectFace<DeliverablesInjected> & PropsRenderSlots<'deliverables.file.actions'>) {
+  const { getTriggerProps } = useContextMenu()
   const [expanded, setExpanded] = useState(false)
   const showCodeDiff = useShowCodeDiff(value => value)
   const cwd = useSessions(state => state.byId[sessionId]?.cwd)
@@ -109,6 +110,7 @@ export function Deliverables({
           phase={states[presentedFileUrl(sessionId, file.seq, file.index)]}
           host={host === 'error' ? null : host} t={t}
           onPreview={() => { openFile(file.path) }}
+          contextMenuProps={getTriggerProps({ kind: 'file', value: { sessionId, path: file.path } })}
           actions={renderSlot('deliverables.file.actions', {
             actionUrl: presentedFileUrl(sessionId, file.seq, file.index),
             available: host !== null && host !== 'error' && host.available,
diff --git a/packages/client/ui-deliverables/src/client/PresentedFileCard.tsx b/packages/client/ui-deliverables/src/client/PresentedFileCard.tsx
index b40bfa40a0..6e71d25d15 100644
--- a/packages/client/ui-deliverables/src/client/PresentedFileCard.tsx
+++ b/packages/client/ui-deliverables/src/client/PresentedFileCard.tsx
@@ -1,3 +1,4 @@
+import type { ContextMenuTriggerProps } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /** File identity, Sidebar preview, and contributed native actions for one delivery. */
 import type { ReactNode } from 'react'
 import { resolveWorkspacePath } from '@deepseek-ai/dsh-util-workspace-path'
@@ -19,12 +20,13 @@ function cardDescription(description: string | undefined, fallback: string): str
  * @param props - durable file metadata, Sidebar preview, Host capabilities, gesture status, and localized copy.
  * @returns the file card and its anchored action menu.
  */
-export function PresentedFileCard({ file, cwd, phase, host, onPreview, actions, t }: {
+export function PresentedFileCard({ file, cwd, phase, host, onPreview, contextMenuProps, actions, t }: {
   file: PresentedPath
   cwd: string | undefined
   phase: PresentedOpenPhase | undefined
   host: PresentedHost | null
   onPreview: () => void
+  contextMenuProps: ContextMenuTriggerProps
   actions: ReactNode
 } & PropsLocale<typeof NS>) {
   const reveal = host?.fileManager ?? 'directory'
@@ -36,7 +38,8 @@ export function PresentedFileCard({ file, cwd, phase, host, onPreview, actions,
       : reveal === 'directory' && phase === 'revealError' ? 'presented.directoryError' : `presented.${phase}`)
   return <div className={css.file} data-presented-file>
     <button type="button" className={css.cardPreview} title={resolveWorkspacePath(cwd, file.path)}
-      aria-label={t('presented.previewCard', { name: file.path })} onClick={onPreview} />
+      aria-label={t('presented.previewCard', { name: file.path })} onClick={onPreview}
+      {...contextMenuProps} />
     <span className={css.fileIcon}><FileTypeIcon path={file.path} size={20} /></span>
     <div className={css.fileBody}>
       <div className={css.details}>
diff --git a/packages/client/ui-deliverables/src/client/index.ts b/packages/client/ui-deliverables/src/client/index.ts
index 6edc7dee77..e07e6090ef 100644
--- a/packages/client/ui-deliverables/src/client/index.ts
+++ b/packages/client/ui-deliverables/src/client/index.ts
@@ -1,3 +1,4 @@
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /**
  * Deliverables plugin, browser half: registers the changed-files card and
  * delivery cards into the chat view's turn-tail list, the `changes-review`
@@ -103,13 +104,14 @@ export function apply(ctx: ClientContext): void {
   // The prose side of the same vocabulary: the chat view reaches this face
   // via ctx.get, so its absence — this plugin composed out — is the off state.
   const mentions: ChatFileMentions = {
-    forClosing(owner) {
+    forClosing(owner, _sessionId, getFileTriggerProps) {
       const paths = selectProducedFiles(owner)
       const presented = presentedForClosing(owner)
       if (paths === null && presented.length === 0) return undefined
       return producedFileMentions([...new Set([...paths ?? [], ...presented.map(file => file.path)])], owner.openFile,
         path => t('presented.previewButton', { name: path }),
-        owner.turn.data.get('deliverables')?.produced)
+        owner.turn.data.get('deliverables')?.produced,
+        getFileTriggerProps)
     },
   }
   ctx.provide('chatFileMentions', mentions)
diff --git a/packages/client/ui-deliverables/src/client/turn-deliverables.ts b/packages/client/ui-deliverables/src/client/turn-deliverables.ts
index 07aba395cf..d51b54edc4 100644
--- a/packages/client/ui-deliverables/src/client/turn-deliverables.ts
+++ b/packages/client/ui-deliverables/src/client/turn-deliverables.ts
@@ -274,6 +274,7 @@ export { basename } from '../presented.ts'
  * @param openFile - The chat view's file opener.
  * @param label - Localizes the accessible open-label for a resolved path.
  * @param operations - successful mutations whose literal arguments may name the same canonical targets.
+ * @param getFileTriggerProps - optional gesture bindings for the resolved original path.
  * @returns The resolver MarkdownText consumes; the full path rides `title`,
  * the same disambiguator the row's chips carry.
  */
@@ -282,6 +283,7 @@ export function producedFileMentions(
   openFile: (path: string) => void,
   label: (path: string) => string,
   operations: readonly Pick<ProducedPath, 'path' | 'argumentPath'>[] = [],
+  getFileTriggerProps?: (path: string) => NonNullable<ReturnType<MarkdownFileMentions['resolve']>>['contextMenuProps'],
 ): MarkdownFileMentions {
   return {
     resolve(value) {
@@ -291,7 +293,9 @@ export function producedFileMentions(
       }
       const path = matches.size === 1 ? matches.values().next().value : undefined
       if (path === undefined) return undefined
-      return { open: () => { openFile(path) }, label: label(path), title: path }
+      const contextMenuProps = getFileTriggerProps?.(path)
+      return { open: () => { openFile(path) }, label: label(path), title: path,
+        ...(contextMenuProps === undefined ? {} : { contextMenuProps }) }
     },
   }
 }
diff --git a/packages/client/ui-deliverables/tests/deliverables.client.spec.tsx b/packages/client/ui-deliverables/tests/deliverables.client.spec.tsx
index cb0e129c6b..9f8ed1d7b1 100644
--- a/packages/client/ui-deliverables/tests/deliverables.client.spec.tsx
+++ b/packages/client/ui-deliverables/tests/deliverables.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * ui-deliverables browser half: the derivation contract of produced paths,
  * recorded changes, and deliveries over engine-published Turn data, the
@@ -43,7 +44,10 @@ function openProps(controller = new PresentedOpenController(), summaries = new C
   controller.host.set({ name: 'desktop', available: true, fileManager: 'finder' })
   const diffs = new ChangesDiffStore()
   const sessions: SessionListState = { ids: [], byId: {}, phase: 'ready', projectionsBySession: {} }
+  const openMenu = vi.fn()
   return {
+    openMenu,
+    useContextMenu: contextMenuHook(openMenu),
     SessionProvider: ({ children }: { children?: import('react').ReactNode }) => <>{children}</>,
     renderSlot: renderFileActions,
     useChangesDiff: <T,>(select: (state: ReturnType<typeof diffs.state.getSnapshot>) => T): T => select(diffs.state.getSnapshot()),
@@ -838,6 +842,7 @@ describe('producedFileMentions resolver', () => {
 describe('plugin registration', () => {
   it('registers the tail entry and fiber disposal removes it', async () => {
     const ctx = new Context()
+    ctx.provide('contextMenus', { register: () => () => {}, open: vi.fn() } as never)
     await ctx.plugin(SlotRegistry).await()
     new UiConversation(ctx, { binding: () => undefined } as never)
     // The owning view's child declaration, stood up by a bench root entry.
@@ -906,10 +911,16 @@ describe('plugin registration', () => {
     const preview = vi.fn<(path: string) => void>()
     for (const produced of [[], [{ path: 'out/report.docx' }]]) {
       const delivered = tailOwner({ produced, presented: [{ path: 'out/report.docx', seq: 2, index: 0 }] }, 3, preview)
-      const mentions = service?.forClosing(delivered, SessionId('child-session'))
+      const { getTriggerProps } = contextMenuHook((target, point) => { ctx.contextMenus.open(target, point) })()
+      const mentions = service?.forClosing(delivered, SessionId('child-session'), path =>
+        getTriggerProps({ kind: 'file', value: { sessionId: SessionId('child-session'), path } }))
       for (const text of ['report.docx', 'out/report.docx']) {
         const mention = mentions?.resolve(text)
         expect(mention?.label).toBe('Open out/report.docx in sidebar')
+        const trigger = render(<button {...mention?.contextMenuProps}>Mention</button>)
+        fireEvent.contextMenu(trigger.getByRole('button'), { clientX: 41, clientY: 52 })
+        trigger.unmount()
+        expect(vi.spyOn(ctx.contextMenus, 'open')).toHaveBeenLastCalledWith({ kind: 'file', value: { sessionId: 'child-session', path: 'out/report.docx' } }, { x: 41, y: 52 })
         mention?.open()
       }
     }
@@ -1014,6 +1025,8 @@ describe('presented files', () => {
     const props = openProps()
     props.openPresented.mockResolvedValue({ kind: 'opened' })
     const view = render(<Deliverables {...props} matched={matched} openFile={owner.openFile} sessionId={SessionId('child-session')} t={makeTranslate(en)} />)
+    fireEvent.contextMenu(view.getByRole('button', { name: 'Preview report-0.docx in sidebar' }), { clientX: 18, clientY: 29 })
+    expect(props.openMenu).toHaveBeenCalledWith({ kind: 'file', value: { sessionId: 'child-session', path: 'report-0.docx' } }, { x: 18, y: 29 })
     expect(view.container.querySelectorAll('[data-presented-file]')).toHaveLength(4)
     const expand = view.getByRole('button', { name: 'Show all 8 delivered files' })
     expect(expand.getAttribute('aria-expanded')).toBe('false')
diff --git a/packages/client/ui-deliverables/tests/presented-file-card.client.spec.tsx b/packages/client/ui-deliverables/tests/presented-file-card.client.spec.tsx
index 192fb447de..0b009d5915 100644
--- a/packages/client/ui-deliverables/tests/presented-file-card.client.spec.tsx
+++ b/packages/client/ui-deliverables/tests/presented-file-card.client.spec.tsx
@@ -2,20 +2,25 @@
 /** Explicit file actions preserve their destination, availability, and independent failure state. */
 import { cleanup, fireEvent, render } from '@testing-library/react'
 import { afterEach, expect, it, vi } from 'vitest'
-import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { contextMenuHook, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import { PresentedFileCard } from '../src/client/PresentedFileCard.tsx'
 import { en, zh } from '../src/client/locales.ts'
 
 afterEach(cleanup)
-const props = () => ({
-  cwd: undefined,
-  file: { path: 'out/report.pdf', description: 'Final report', seq: 4, index: 1 },
-  host: { name: 'remote-desktop', available: true, fileManager: 'finder' as const },
-  phase: undefined,
-  onPreview: vi.fn(),
-  actions: <button type="button">Native file action</button>,
-  t: makeTranslate(en),
-})
+const props = () => {
+  const onMenu = vi.fn()
+  return {
+    cwd: undefined,
+    file: { path: 'out/report.pdf', description: 'Final report', seq: 4, index: 1 },
+    host: { name: 'remote-desktop', available: true, fileManager: 'finder' as const },
+    phase: undefined,
+    onPreview: vi.fn(),
+    onMenu, contextMenuProps: contextMenuHook((_target, point) => { onMenu(point) })()
+      .getTriggerProps({ kind: 'image', value: { url: 'unused' } }),
+    actions: <button type="button">Native file action</button>,
+    t: makeTranslate(en),
+  }
+}
 it('localizes reveal failures and restores the description when progress clears', () => {
   const p = props()
   const view = render(<PresentedFileCard {...p} phase="revealError" t={makeTranslate(zh)} />)
@@ -66,6 +71,8 @@ it('renders the supplied action independently from the card preview', () => {
   fireEvent.click(view.getByRole('button', { name: 'Native file action' }))
   expect(native).toHaveBeenCalledOnce()
   expect(p.onPreview).not.toHaveBeenCalled()
+  fireEvent.contextMenu(view.getByRole('button', { name: 'Preview out/report.pdf in sidebar' }), { clientX: 26, clientY: 37 })
+  expect(p.onMenu).toHaveBeenCalledWith({ x: 26, y: 37 })
   fireEvent.click(view.getByRole('button', { name: 'Preview out/report.pdf in sidebar' }))
   expect(p.onPreview).toHaveBeenCalledOnce()
 })
diff --git a/packages/client/ui-deliverables/tsconfig.client.json b/packages/client/ui-deliverables/tsconfig.client.json
index 4fe248edd6..bd78605122 100644
--- a/packages/client/ui-deliverables/tsconfig.client.json
+++ b/packages/client/ui-deliverables/tsconfig.client.json
@@ -68,6 +68,9 @@
     },
     {
       "path": "../../util/workspace-path"
+    },
+    {
+      "path": "../ui-context-menu"
     }
   ]
 }
diff --git a/packages/client/ui-directory-picker-browse/package.json b/packages/client/ui-directory-picker-browse/package.json
index 6a89ebbb8c..035f2bfe7b 100644
--- a/packages/client/ui-directory-picker-browse/package.json
+++ b/packages/client/ui-directory-picker-browse/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-directory-picker-browse",
   "description": "In-app directory browsing surface: the workspace directory-flow owner rendering the host's listing and creation primitives",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-directory-picker-native/package.json b/packages/client/ui-directory-picker-native/package.json
index 4083b08a91..46a287905c 100644
--- a/packages/client/ui-directory-picker-native/package.json
+++ b/packages/client/ui-directory-picker-native/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-directory-picker-native",
   "description": "Native directory-picker surface: the renderless workspace directory-flow occupant driving the local Desktop or Host OS chooser",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-dockkit/README.i18n.yaml b/packages/client/ui-dockkit/README.i18n.yaml
index 6bff57dde1..0fadf55cad 100644
--- a/packages/client/ui-dockkit/README.i18n.yaml
+++ b/packages/client/ui-dockkit/README.i18n.yaml
@@ -18,8 +18,8 @@
   en: 718f52cfce426009
   zh: e8282e2e3713d242
 /deepseek-ai-dsh-client-ui-dockkit/embedding-it:
-  en: 87fab28e0608044e
-  zh: 2d5f80a367f1852b
+  en: 53bbabeb910c6f77
+  zh: 51fb4f8fb78cfd02
 /deepseek-ai-dsh-client-ui-dockkit/interaction-rules-worth-keeping:
   en: cf2d00ce2b7d5719
   zh: 5510420f8872e23a
diff --git a/packages/client/ui-dockkit/README.md b/packages/client/ui-dockkit/README.md
index 12f5b74938..a446fdedd6 100644
--- a/packages/client/ui-dockkit/README.md
+++ b/packages/client/ui-dockkit/README.md
@@ -60,6 +60,8 @@ Everything host-specific arrives through props:
 
 `dropZones="horizontal"` offers two half-pane hints; once budget or width forbids another split, the whole body accepts a move. A hint is a dashed card inset 8px inside its region, showing the zone's glyph and `labels.dropZone[zone]`; the preview layer covers all tab-body content, while the card under the pointer takes the accent and its neighbour stays a quiet outline. `minPaneFraction` sets the preview minimum, and `planResizeSplit` accepts the same minimum for the committed operation. The Sidebar uses 0.2 and enforces two panes in its own store. The generic engine retains its tree and other split directions. `hideSplitWhenBlocked` hides a blocked split control — pane budget spent or pane too narrow — instead of rendering it disabled; its default is false.
 
+The split control wrapper exposes `data-dockkit-split-control` for embedder styling, independently of its element tag.
+
 A tab's `kind` is an opaque string. Seeded tabs are factories (`DockControllerOptions`), so what a fresh pane contains is the embedder's decision, not this package's. Content identity is the pair (`kind`, `contentId`): `findContentTab(state, contentId, kind?)` finds the tab showing it anywhere and `findPaneContentTab(state, paneId, contentId, kind?)` within one pane, and `planOpenContent` focuses that tab instead of opening another unless told `revealIfOpened: false`; an explicit `index` seats a new tab at a strip slot rather than at the end.
 
 `DockLayout`, used by the Sidebar, keeps each tab in a stable DOM cell across selection, pane moves and floating. It accepts one docked pane or two horizontal panes; CSS Grid resolves their widths. `keepMounted(tab)` retains visited bodies and `active` controls Session visibility without reparenting content.
diff --git a/packages/client/ui-dockkit/README.zh.md b/packages/client/ui-dockkit/README.zh.md
index 06b1a593f3..d94e4ee9f3 100644
--- a/packages/client/ui-dockkit/README.zh.md
+++ b/packages/client/ui-dockkit/README.zh.md
@@ -60,6 +60,8 @@ kind: "package-reference"
 
 `dropZones="horizontal"` 提供左右两个半区提示；预算或宽度不允许再拆时，正文整格接收移动。提示是一张内缩 8px 的虚线卡片，显示该落区的图形和 `labels.dropZone[zone]`；预览层覆盖全部 tab 正文，指针所在的卡片取强调色，另一张保持安静的轮廓。`minPaneFraction` 控制预览的最小比例，`planResizeSplit` 接受相同最小值以约束提交；Sidebar使用0.2并在自己的store限制两格。通用引擎仍保留原有树与其它分割方向。 `hideSplitWhenBlocked` 在分栏被阻止时（窗格预算已满或格太窄）直接隐藏分栏控件而不是渲染禁用态，默认值为 false。
 
+分栏控件的包裹元素通过 `data-dockkit-split-control` 提供宿主样式入口，不依赖具体元素标签。
+
 tab 的 `kind` 是不透明字符串。种子 tab 是工厂（`DockControllerOptions`），因此新格里放什么由嵌入方决定，与本包无关。内容身份是二元组（`kind`、`contentId`）：`findContentTab(state, contentId, kind?)` 在任意位置找到展示它的 tab，`findPaneContentTab(state, paneId, contentId, kind?)` 在一个格内找；`planOpenContent` 会聚焦该 tab 而非再开一个，除非被告知 `revealIfOpened: false`；显式的 `index` 把新 tab 放到 tab 条的某个位置而非末尾。
 
 Sidebar 使用的 `DockLayout` 在选中项变化、跨格移动与浮动期间，把每个 tab 保留在稳定的 DOM 容器中。它接受一个停靠格或左右两个格，由 CSS Grid 计算宽度。`keepMounted(tab)` 保留已访问正文，`active` 控制 Session 可见性，不改变内容的父子关系。
diff --git a/packages/client/ui-dockkit/package.json b/packages/client/ui-dockkit/package.json
index 20b15c7b52..c626d2c657 100644
--- a/packages/client/ui-dockkit/package.json
+++ b/packages/client/ui-dockkit/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-dockkit",
   "description": "Docking layout kit: split-tree engine with invertible operations, and the React components that render and drive it (zero cordis)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-dockkit/src/components/DockSurface.tsx b/packages/client/ui-dockkit/src/components/DockSurface.tsx
index 846a4b75e8..36ec07ca0b 100644
--- a/packages/client/ui-dockkit/src/components/DockSurface.tsx
+++ b/packages/client/ui-dockkit/src/components/DockSurface.tsx
@@ -9,9 +9,9 @@
  * drop target changes nothing.
  */
 import { useCallback, useEffect, useLayoutEffect, useRef, useState } from 'react'
-import type { ReactNode } from 'react'
+import type { ReactNode, HTMLAttributes } from 'react'
 import type { DockIntents, DockLabels, TabMenuExtras, TabRenderer } from '../contract/adapter.ts'
-import type { LayoutState, PaneId, SplitId, TabId } from '../contract/types.ts'
+import type { LayoutState, PaneId, SplitId, TabId, TabRecord } from '../contract/types.ts'
 import { clampSizes, FLOAT_DEFAULT_SIZE, MIN_PANE_FRACTION } from '../engine/constraints.ts'
 import { getSplit, topRightPaneId } from '../engine/tree.ts'
 import type { DropTarget, HalvesFit } from '../engine/geometry.ts'
@@ -63,7 +63,11 @@ export interface DockSurfaceProps {
    * slot, and nothing outside that embedder is expected to supply it.
    */
   readonly renderTabTitle?: TabRenderer
-  /** Extra items for a tab's context menu; omit for the kit's own item only. */
+  /** Whether the embedder popup is preparing or visible; suppresses tab tooltips. */
+  readonly tabMenuOpen?: boolean | undefined
+  /** Override the kit popup; the embedder owns rendering and dismissal. */
+  readonly getTabTriggerProps?: ((tab: TabRecord, paneId: PaneId, handlers?: Pick<HTMLAttributes<HTMLElement>, 'onContextMenu' | 'onKeyDown' | 'tabIndex'>) => Pick<HTMLAttributes<HTMLElement>, 'onContextMenu' | 'onKeyDown' | 'tabIndex'>) | undefined
+  /** Extra rows for the kit popup; ignored when getTabTriggerProps is supplied. */
   readonly renderTabMenuItems?: TabMenuExtras
   /**
    * Surface-wide controls, drawn at the far end of the top-right pane's tab
@@ -169,7 +173,8 @@ function sameSizes(a: readonly number[], b: readonly number[]): boolean {
 
 /** The split tree and the gestures over it. */
 function Surface({
-  state, canSplit, canAddTab, canCloseTab, intents, labels, renderTab, renderTabTitle, renderTabMenuItems, chrome, onRoom,
+  state, canSplit, canAddTab, canCloseTab, intents, labels, renderTab, renderTabTitle, renderTabMenuItems,
+  getTabTriggerProps, tabMenuOpen, chrome, onRoom,
   draw,
   dropZones = 'edges', minPaneFraction = MIN_PANE_FRACTION, hideSplitWhenBlocked = false,
 }: DockSurfaceProps & { readonly draw: (callbacks: PaneCallbacks, preview: SizePreview | undefined) => ReactNode }): ReactNode {
@@ -291,6 +296,7 @@ function Surface({
     renderTab,
     renderTabTitle,
     renderTabMenuItems,
+    getTabTriggerProps, tabMenuOpen,
     chromePaneId: topRightPaneId(state),
     chrome,
   }
diff --git a/packages/client/ui-dockkit/src/components/TabPanel.tsx b/packages/client/ui-dockkit/src/components/TabPanel.tsx
index 632a763ff3..a7d2e721ea 100644
--- a/packages/client/ui-dockkit/src/components/TabPanel.tsx
+++ b/packages/client/ui-dockkit/src/components/TabPanel.tsx
@@ -22,6 +22,7 @@
  * `canAddTab` allows), the pane's split control, and the embedder's chrome keep
  * their width and their place at the strip's end.
  */
+import type { KeyboardEvent } from 'react'
 import { Fragment, useLayoutEffect, useRef, useState } from 'react'
 import type { ReactNode, RefObject } from 'react'
 import clsx from 'clsx'
@@ -303,6 +304,13 @@ export function TabStrip({ state, pane, callbacks, offsets }: TabStripProps): Re
           // A pane's lone unclosable chip is a label, not a choice: there is
           // no other tab to select against and nothing to do to it.
           const quiet = !closable && pane.tabs.length === 1
+          const onKeyDown = (event: KeyboardEvent<HTMLElement>) => {
+            if (event.target !== event.currentTarget) return
+            if (event.altKey || event.ctrlKey || event.metaKey || event.shiftKey || event.nativeEvent.isComposing) return
+            const next = chipToFocus(event.key, pane.tabs, tabId)
+            if (next !== undefined) { event.preventDefault(); focusChip(next); return }
+            if (selects(event.key)) { event.preventDefault(); activate(tabId) }
+          }
           return (
             <Fragment key={tabId}>
               {(index > 0 || stripIndex === index) && (
@@ -350,30 +358,18 @@ export function TabStrip({ state, pane, callbacks, offsets }: TabStripProps): Re
                   event.stopPropagation()
                   activate(tabId)
                 }}
-                onKeyDown={(event) => {
-                  // Keys on the chip's nested close control are that control's.
-                  if (event.target !== event.currentTarget) return
-                  if (event.altKey || event.ctrlKey || event.metaKey || event.shiftKey || event.nativeEvent.isComposing) return
-                  const next = chipToFocus(event.key, pane.tabs, tabId)
-                  if (next !== undefined) {
-                    event.preventDefault()
-                    focusChip(next)
-                    return
-                  }
-                  if (selects(event.key)) {
-                    event.preventDefault()
-                    activate(tabId)
-                  }
-                }}
-                onContextMenu={(event) => {
-                  event.preventDefault()
-                  const anchor = event.currentTarget
-                  setMenu(current => current?.tabId === tabId ? undefined : { tabId, anchor })
+                {...callbacks.getTabTriggerProps?.(tab, pane.id, { onKeyDown, tabIndex: selected ? 0 : -1 }) ?? {
+                  onKeyDown,
+                  onContextMenu: (event) => {
+                    event.preventDefault(); event.stopPropagation()
+                    const anchor = event.currentTarget
+                    setMenu(current => current?.tabId === tabId ? undefined : { tabId, anchor })
+                  },
                 }}
               >
                 <TabTitle>{callbacks.renderTabTitle?.(tab) ?? tab.title}</TabTitle>
                 {closable && (
-                  <Tooltip disabled={menu !== undefined} label={callbacks.labels.closeTab} shortcutKeys={callbacks.labels.closeTabKeys} side="bottom" delayMs={500}>
+                  <Tooltip disabled={menu !== undefined || callbacks.tabMenuOpen === true} label={callbacks.labels.closeTab} shortcutKeys={callbacks.labels.closeTabKeys} side="bottom" delayMs={500}>
                     <button
                       type="button"
                       className={css.tabClose}
@@ -427,6 +423,7 @@ export function TabStrip({ state, pane, callbacks, offsets }: TabStripProps): Re
       {!(callbacks.hideSplitWhenBlocked && block !== undefined) && (
         <Tooltip label={block === undefined ? callbacks.labels.splitPane : splitBlockedTitle(callbacks.labels, block)} shortcutKeys={callbacks.labels.splitPaneKeys} side="bottom" delayMs={500} openOnClick={block !== undefined}>
           <span
+            data-dockkit-split-control
             tabIndex={block === undefined ? undefined : 0}
             aria-label={block === undefined ? undefined : splitBlockedTitle(callbacks.labels, block)}
             onClick={(event) => { if (block !== undefined) event.stopPropagation() }}
diff --git a/packages/client/ui-dockkit/src/components/render.ts b/packages/client/ui-dockkit/src/components/render.ts
index 8517b27a3c..f9f42415cb 100644
--- a/packages/client/ui-dockkit/src/components/render.ts
+++ b/packages/client/ui-dockkit/src/components/render.ts
@@ -2,9 +2,9 @@
  * Prop shares the kit's own components pass among themselves. These are internal
  * to the package — the outward contracts are in `adapter.ts`.
  */
-import type { PointerEvent as ReactPointerEvent, ReactNode } from 'react'
+import type { PointerEvent as ReactPointerEvent, ReactNode, HTMLAttributes } from 'react'
 import type { DockLabels, TabMenuExtras, TabRenderer } from '../contract/adapter.ts'
-import type { PaneId, SplitId, TabId } from '../contract/types.ts'
+import type { PaneId, SplitId, TabId, TabRecord } from '../contract/types.ts'
 import type { DropTarget } from '../engine/geometry.ts'
 
 /** Why a pane's split control is disabled: the pane budget, or too little width for two halves. */
@@ -39,7 +39,11 @@ export interface PaneCallbacks {
   readonly renderTab: TabRenderer
   /** A chip's or panel header's title content; absent means the record's `title` text. */
   readonly renderTabTitle: TabRenderer | undefined
-  /** Embedder items appended to a tab's context menu; absent means the kit's item only. */
+  /** Whether the embedder popup is preparing or visible; suppresses tab tooltips. */
+  readonly tabMenuOpen?: boolean | undefined
+  /** Override the kit popup; the embedder owns rendering and dismissal. */
+  readonly getTabTriggerProps?: ((tab: TabRecord, paneId: PaneId, handlers?: Pick<HTMLAttributes<HTMLElement>, 'onContextMenu' | 'onKeyDown' | 'tabIndex'>) => Pick<HTMLAttributes<HTMLElement>, 'onContextMenu' | 'onKeyDown' | 'tabIndex'>) | undefined
+  /** Extra rows for the kit popup; ignored when getTabTriggerProps is supplied. */
   readonly renderTabMenuItems: TabMenuExtras | undefined
   /** The pane whose strip hosts the embedder's surface-wide controls. */
   readonly chromePaneId: PaneId
diff --git a/packages/client/ui-dockkit/tests/components.client.spec.tsx b/packages/client/ui-dockkit/tests/components.client.spec.tsx
index 492f7478dd..2954c76afb 100644
--- a/packages/client/ui-dockkit/tests/components.client.spec.tsx
+++ b/packages/client/ui-dockkit/tests/components.client.spec.tsx
@@ -281,6 +281,7 @@ describe('DockSurface', () => {
     expect(disabled.hasAttribute('disabled')).toBe(true)
     expect(disabled.parentElement?.getAttribute('aria-label')).toBe(TEST_LABELS.splitPaneDisabled)
     expect(disabled.getAttribute('data-dockkit-split-blocked')).toBe('budget')
+    expect(disabled.parentElement?.hasAttribute('data-dockkit-split-control')).toBe(true)
     intents.splitPane.mockClear()
     const hint = disabled.parentElement!
     fireEvent.pointerDown(hint, { pointerType: 'touch' })
@@ -735,6 +736,8 @@ describe('DockSurface', () => {
     // A press on the nested control must not reach the chip's gesture handler;
     // if it did, the pointer would be captured and this click would never land.
     fireEvent.pointerDown(close)
+    expect(fireEvent.keyDown(close, { key: 'Enter' })).toBe(true)
+    expect(fireEvent.keyDown(close, { key: ' ' })).toBe(true)
     fireEvent.click(close)
     expect(intents.closeTab).toHaveBeenCalledTimes(1)
     expect(intents.focusTab).not.toHaveBeenCalled()
diff --git a/packages/client/ui-entry-customization/package.json b/packages/client/ui-entry-customization/package.json
index faa57ff82a..05424094c9 100644
--- a/packages/client/ui-entry-customization/package.json
+++ b/packages/client/ui-entry-customization/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-entry-customization",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "description": "Customize plugin entries in the left sidebar, conversation views, and right sidebar, and quickly create new plugins.",
   "publishConfig": { "access": "public" },
   "repository": {
diff --git a/packages/client/ui-file-actions/README.i18n.yaml b/packages/client/ui-file-actions/README.i18n.yaml
new file mode 100644
index 0000000000..d5dc2b87f5
--- /dev/null
+++ b/packages/client/ui-file-actions/README.i18n.yaml
@@ -0,0 +1,40 @@
+# Bilingual-pair consistency record for README.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/client/ui-file-actions/README.md
+/:
+  en: db8b44fa8e1d0a79
+  zh: 3431d73a8dc16800
+/deepseek-ai-dsh-client-ui-file-actions:
+  en: d5e3417adce936da
+  zh: bf4d42392bdb01eb
+/deepseek-ai-dsh-client-ui-file-actions/summary:
+  en: c65f856928f2a411
+  zh: 053f56ca704412f8
+/deepseek-ai-dsh-client-ui-file-actions/table-of-contents:
+  en: d152484eb41ac6b4
+  zh: 725b47765ee8f30b
+/deepseek-ai-dsh-client-ui-file-actions/use-this-package:
+  en: 3d9faac620769c8f
+  zh: 2d3e55294f6dbb42
+/deepseek-ai-dsh-client-ui-file-actions/use-this-package/original-content:
+  en: fce75f484abb2ebd
+  zh: bd91a6e5226f1f76
+/deepseek-ai-dsh-client-ui-file-actions/understand-the-implementation:
+  en: 8f3817d3526a290a
+  zh: 827ea59f30dd7a4b
+/deepseek-ai-dsh-client-ui-file-actions/further-exploration:
+  en: 8a3213638c8d46fc
+  zh: 94cf32ce56065a29
+/deepseek-ai-dsh-client-ui-file-actions/model-experience:
+  en: 2c988a6ba09ee7af
+  zh: 02de272dc2baf7cc
+/deepseek-ai-dsh-client-ui-file-actions/model-experience/kv-cache-effect:
+  en: 8e9edd2069fa84dc
+  zh: 1e007d71bf2bccf1
+/deepseek-ai-dsh-client-ui-file-actions/known-limitations-and-deferred-work:
+  en: 030208ab1bd1b027
+  zh: c11f27bed0231602
+/deepseek-ai-dsh-client-ui-file-actions/known-limitations-and-deferred-work/dev-note:
+  en: e67f633dc6fe7773
+  zh: 6c5f9788c6536776
diff --git a/packages/client/ui-file-actions/README.md b/packages/client/ui-file-actions/README.md
new file mode 100644
index 0000000000..8aeba41c51
--- /dev/null
+++ b/packages/client/ui-file-actions/README.md
@@ -0,0 +1,92 @@
+---
+description: "Download and save original files without changing their encoding"
+kind: "package-reference"
+---
+
+# @deepseek-ai/dsh-client-ui-file-actions
+
+English | [中文](README.zh.md)
+
+## Summary
+
+Download and save original files without changing their encoding. Copy images as pasteable PNG content while retaining the original format for saves. Desktop can reveal a successfully saved file; a browser download never claims to know its local destination.
+
+## Table of Contents
+
+- [Use this package](#use-this-package)
+- [Understand the implementation](#understand-the-implementation)
+- [Further Exploration](#further-exploration)
+- [Model Experience](#model-experience)
+- [Known Limitations and Deferred Work](#known-limitations-and-deferred-work)
+- [Dev Note](#dev-note)
+
+-----
+
+<a id="use-this-package"></a>
+## Use this package
+
+The Web application bundle mounts this Client plugin without configuration fields. Consumers import `/client` types and inject `fileActions`. Desktop supplies an optional trusted-frame adapter for Chromium downloads and cross-origin clipboard reads. Both Desktop and Web write PNG images through the browser Clipboard API.
+
+### Original content
+
+Pass an original URL, optional filename and MIME, or an authorized `read(signal)` callback for Session-owned files. Saves preserve bytes. MIME determines the suffix when it conflicts with the supplied name; compatible and unknown suffixes remain. Suggested names exclude platform-reserved characters and device names and fit a 255-byte filename.
+
+`save(source, mode)` returns `cancelled`, `requested` for a browser download, or `saved` with the absolute destination `path` after a native save completes. Web menus offer Download for files and images and omit Save as. Web downloads pass original content to the browser with a suggested filename; the browser owns the destination and completion. They return no local path. Save as requires Desktop: `canSaveAs` is false on Web and Web `saveAs` calls reject without reading the source.
+
+Desktop completion toasts offer a Show in folder text action (Show in Finder on macOS), capturing that operation's destination. The action uses `session.openWorkspacePath` with the existing Host path validation; no download history or separate reveal IPC is retained. Context-menu reveal belongs to `ui-open-in-app` and always targets the original local file, regardless of previous saves.
+
+Filename and MIME normalization reuse the file-drag utility, so saving and dragging retain the same original format and filename policy.
+
+Response MIME takes precedence over a suggested filename or media type when naming downloaded originals. Image copying decodes the captured original into PNG for clipboard interoperability. `copyImageAt` addresses the current pixels at a coordinate, provides no completion result, and cannot bind the image captured by a card or keyboard menu. Copying therefore reads the captured source even when an image moves, changes, or is covered by the menu. Downloads and save-as never use that conversion. The plugin contributes file and image copy, download, save-as, and localized feedback through `ctx.contextMenus`, independently of `ui-open-in-app`. Other service callers own their feedback. Rejected reads do not start writes. Desktop downloads use `webContents.downloadURL` and `DownloadItem`: direct originals remain URLs; authorized Session reads become temporary Blob URLs retained until completion. Response MIME names the original file, downloads reserve distinct paths, and save-as uses Chromium’s save dialog and replacement behavior. Only the completed event returns a destination; cancellation is silent and interruption reports failure. Navigation or window closure cancels pending downloads. Plugin disposal aborts browser reads and pending reveal requests and releases object URLs.
+
+Desktop downloads follow Chromium’s session and network policy. Only clipboard fallback reads use the bounded credential-free HTTP(S) reader, rejecting the application Host at every redirect. Other destinations use the machine’s network policy. Ordinary Web reads require the remote server to allow browser CORS; a denied response produces failure feedback without starting a save.
+
+-----
+
+<a id="understand-the-implementation"></a>
+## Understand the implementation
+
+<details>
+<summary>Implementation internals — click to expand</summary>
+
+The Client selects browser or native operations once per plugin lifetime. [Client implementation](src/client/files.ts) owns MIME normalization and clipboard conversion. [Desktop adapter](../../../apps/desktop/src/file-actions.ts) validates IPC inputs and revalidates the trusted window before returning the completed destination path.
+
+</details>
+
+-----
+
+<a id="further-exploration"></a>
+## Further Exploration
+
+- [Context menus](../ui-context-menu/README.md) — contributed actions.
+- [Workspace files](../../api/workspace-files/README.md) — authorized Session reads.
+- [Desktop](../../../apps/desktop/README.md) — native operation settings.
+
+-----
+
+<a id="model-experience"></a>
+## Model Experience
+
+None, as explicit user file and clipboard operations do not construct model input.
+
+#### KV Cache effect
+
+None; saving and copying do not change model requests.
+
+## Known Limitations and Deferred Work
+
+<a id="known-limitations-and-deferred-work"></a>
+
+- Save as is Desktop-only; clipboard operations depend on browser permission and image decoding support.
+- Native downloads have a configurable startup deadline; once Chromium accepts the download, its completion or cancellation ends the operation; HTTP(S) clipboard reads omit credentials and stop on window navigation, close, timeout, or the configured byte limit.
+- Browser downloads have no reveal action unless a separate, actual Host file is known.
+
+<a id="dev-note"></a>
+### Dev Note
+
+<details>
+<summary>Working context for maintainers — click to expand</summary>
+
+None.
+
+</details>
diff --git a/packages/client/ui-file-actions/README.zh.md b/packages/client/ui-file-actions/README.zh.md
new file mode 100644
index 0000000000..8f072cf4ee
--- /dev/null
+++ b/packages/client/ui-file-actions/README.zh.md
@@ -0,0 +1,92 @@
+---
+description: "下载和另存原始文件时保持编码不变"
+kind: "package-reference"
+---
+
+# @deepseek-ai/dsh-client-ui-file-actions
+
+[English](README.md) | 中文
+
+## 概述
+
+下载和另存原始文件时保持编码不变。图片复制为可粘贴的 PNG 内容，保存则保留原始格式。Desktop 可以显示成功保存的文件位置；浏览器下载不会声称知道其本机目标路径。
+
+## 目录
+
+- [使用本包](#use-this-package)
+- [理解实现](#understand-the-implementation)
+- [进一步探索](#further-exploration)
+- [模型体验](#model-experience)
+- [已知限制与延后工作](#known-limitations-and-deferred-work)
+- [开发备注](#dev-note)
+
+-----
+
+<a id="use-this-package"></a>
+## 使用本包
+
+Web 应用 bundle 无配置字段地挂载此客户端插件。使用方导入 `/client` 类型并注入 `fileActions`。Desktop 为 Chromium 下载和跨域剪贴板读取提供可选的可信页面适配器。Desktop 与 Web 均通过浏览器 Clipboard API 写入 PNG 图片。
+
+### 原始内容
+
+传入原始 URL、可选文件名和 MIME；会话文件也可提供经授权的 `read(signal)` 回调。保存保持字节不变。MIME 与文件名冲突时修正后缀；兼容和未知后缀保持不变。建议名称去除平台保留字符和设备名称，并限制在 255 字节以内。
+
+`save(source, mode)` 返回取消状态 `cancelled`、浏览器下载已请求状态 `requested`，或原生保存完成后的 `saved` 及目标绝对路径 `path`。Web 的文件和图片菜单提供「下载」，不显示「另存为」。Web 下载将原始内容和建议文件名交给浏览器，由浏览器负责保存位置和完成状态，不返回本机路径。「另存为」仅限 Desktop：Web 的 `canSaveAs` 为 false，调用 `saveAs` 会在读取来源前拒绝。
+
+Desktop 完成提示提供「在文件夹显示」文字操作（macOS 为「在 Finder 显示」），捕获该次操作的目标路径。该操作调用 `session.openWorkspacePath`，复用现有 Host 路径校验，不保留下载历史或独立的 reveal IPC。右键菜单中的定位由 `ui-open-in-app` 提供，始终针对原本就在本地的文件，不受此前保存影响。
+
+文件名与 MIME 规范化复用文件拖动工具，因此保存与拖动采用相同的原始格式和文件名规则。
+
+下载原始内容时，响应 MIME 优先于建议文件名或媒体类型。图片复制将捕获的原始内容解码为 PNG，保证剪贴板互通。`copyImageAt` 定位坐标上的当前内容，没有完成回执，也不能绑定卡片或键盘菜单捕获的图片。因此，即使图片移动、替换或被菜单遮挡，复制仍读取捕获的来源。下载与另存为不使用该转换。本插件通过 `ctx.contextMenus` 贡献文件和图片的复制、下载、另存为及本地化提示，不依赖 `ui-open-in-app`。其他服务调用方负责自己的提示。读取失败不会开始写入。Desktop 下载使用 `webContents.downloadURL` 与 `DownloadItem`：直接来源保留为 URL，经授权的 Session 读取转为临时 Blob URL 并保留到完成。响应 MIME 决定原始文件名，下载独占不同路径，另存为使用 Chromium 的保存对话框和替换行为。仅完成事件返回目标路径；取消不提示，下载中断显示失败。导航或关闭窗口会取消待完成的下载。插件释放时取消浏览器读取及待完成的定位请求，并释放对象 URL。
+
+Desktop 下载遵循 Chromium 会话及网络策略。只有剪贴板回退读取使用有界、无凭据的 HTTP(S) 读取器，每次重定向均禁止访问应用 Host。其他目标遵循本机网络策略。普通 Web 读取要求远端服务允许浏览器 CORS；响应被拒绝时显示失败提示，不开始保存。
+
+-----
+
+<a id="understand-the-implementation"></a>
+## 理解实现
+
+<details>
+<summary>实现细节 — 点击展开</summary>
+
+客户端在插件生命周期开始时选择浏览器或原生操作。[客户端实现](src/client/files.ts) 管理 MIME 归一化与剪贴板转换。[Desktop 适配器](../../../apps/desktop/src/file-actions.ts) 验证 IPC 输入，并在返回完成后的目标路径前重新验证可信窗口。
+
+</details>
+
+-----
+
+<a id="further-exploration"></a>
+## 进一步探索
+
+- [右键菜单](../ui-context-menu/README.zh.md) — 操作贡献。
+- [工作区文件](../../api/workspace-files/README.zh.md) — 授权会话读取。
+- [Desktop](../../../apps/desktop/README.zh.md) — 原生操作设置。
+
+-----
+
+<a id="model-experience"></a>
+## 模型体验
+
+无，因为用户主动的文件和剪贴板操作不会构造模型输入。
+
+#### KV 缓存影响
+
+无；保存与复制不改变模型请求。
+
+## 已知限制与延后工作
+
+<a id="known-limitations-and-deferred-work"></a>
+
+- 另存为仅限 Desktop；剪贴板操作依赖浏览器权限和图像解码支持。
+- 原生下载具有可配置的启动期限；Chromium 接管后，以完成或取消事件结束操作。HTTP(S) 剪贴板读取不携带凭据，窗口导航、关闭、超时或达到配置字节上限时停止。
+- 浏览器下载不提供文件定位，除非另有已知、实际存在的 Host 文件。
+
+<a id="dev-note"></a>
+### 开发备注
+
+<details>
+<summary>维护者工作背景 — 点击展开</summary>
+
+无。
+
+</details>
diff --git a/packages/client/ui-file-actions/locale/de.json b/packages/client/ui-file-actions/locale/de.json
new file mode 100644
index 0000000000..e174e86359
--- /dev/null
+++ b/packages/client/ui-file-actions/locale/de.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Dateiaktionen"
+  }
+}
diff --git a/packages/client/ui-file-actions/locale/en.json b/packages/client/ui-file-actions/locale/en.json
new file mode 100644
index 0000000000..f940a57484
--- /dev/null
+++ b/packages/client/ui-file-actions/locale/en.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "File actions"
+  }
+}
diff --git a/packages/client/ui-file-actions/locale/es.json b/packages/client/ui-file-actions/locale/es.json
new file mode 100644
index 0000000000..76753f4f77
--- /dev/null
+++ b/packages/client/ui-file-actions/locale/es.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Acciones de archivos"
+  }
+}
diff --git a/packages/client/ui-file-actions/locale/fr.json b/packages/client/ui-file-actions/locale/fr.json
new file mode 100644
index 0000000000..3d98d32425
--- /dev/null
+++ b/packages/client/ui-file-actions/locale/fr.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Actions sur les fichiers"
+  }
+}
diff --git a/packages/client/ui-file-actions/locale/ja.json b/packages/client/ui-file-actions/locale/ja.json
new file mode 100644
index 0000000000..6761fef47c
--- /dev/null
+++ b/packages/client/ui-file-actions/locale/ja.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "ファイル操作"
+  }
+}
diff --git a/packages/client/ui-file-actions/locale/pt.json b/packages/client/ui-file-actions/locale/pt.json
new file mode 100644
index 0000000000..7fd94b7e20
--- /dev/null
+++ b/packages/client/ui-file-actions/locale/pt.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Ações de arquivos"
+  }
+}
diff --git a/packages/client/ui-file-actions/locale/ru.json b/packages/client/ui-file-actions/locale/ru.json
new file mode 100644
index 0000000000..bd7bee4a74
--- /dev/null
+++ b/packages/client/ui-file-actions/locale/ru.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "Действия с файлами"
+  }
+}
diff --git a/packages/client/ui-file-actions/locale/zh.json b/packages/client/ui-file-actions/locale/zh.json
new file mode 100644
index 0000000000..7912c94ec4
--- /dev/null
+++ b/packages/client/ui-file-actions/locale/zh.json
@@ -0,0 +1,5 @@
+{
+  "meta": {
+    "title": "文件操作"
+  }
+}
diff --git a/packages/client/ui-file-actions/package.json b/packages/client/ui-file-actions/package.json
new file mode 100644
index 0000000000..13f9586d05
--- /dev/null
+++ b/packages/client/ui-file-actions/package.json
@@ -0,0 +1,73 @@
+{
+  "name": "@deepseek-ai/dsh-client-ui-file-actions",
+  "description": "Original-file saving and image clipboard actions for Web and Desktop",
+  "version": "0.2.2-alpha.2",
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/ui-file-actions"
+  },
+  "type": "module",
+  "main": "lib/index.js",
+  "types": "lib/types/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/types/index.d.ts",
+      "default": "./lib/index.js"
+    },
+    "./client": {
+      "types": "./lib/types/client/index.d.ts",
+      "default": "./lib/client.js"
+    },
+    "./src/*": "./src/*",
+    "./package.json": "./package.json",
+    "./locale/*.json": "./locale/*.json",
+    "./types": {
+      "types": "./lib/types/types.d.ts"
+    }
+  },
+  "dsh": {
+    "client": {
+      "inject": [
+        "@deepseek-ai/dsh-client-locale",
+        "@deepseek-ai/dsh-client-ui-context-menu",
+        "@deepseek-ai/dsh-api-workspace-files",
+        "@deepseek-ai/dsh-api-session-controller"
+      ],
+      "platform": "web"
+    }
+  },
+  "scripts": {
+    "bundle": "tsdown",
+    "watch": "tsdown --watch"
+  },
+  "license": "MIT",
+  "peerDependencies": {
+    "@deepseek-ai/cordis": "workspace:~"
+  },
+  "devDependencies": {
+    "react": "^18.2.0",
+    "@deepseek-ai/dsh-client-ui-primitives": "workspace:*",
+    "@deepseek-ai/cordis": "workspace:~",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:*",
+    "@deepseek-ai/dsh-api-session-controller": "workspace:*",
+    "@deepseek-ai/dsh-client-test-runtime": "workspace:*",
+    "@deepseek-ai/dsh-util-file-drag": "workspace:*",
+    "@deepseek-ai/dsh-client-locale": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*",
+    "@deepseek-ai/dsh-api-workspace-files": "workspace:*",
+    "@deepseek-ai/dsh-session": "workspace:*",
+    "@deepseek-ai/dsh-util-workspace-path": "workspace:*",
+    "mime": "^4.1.0",
+    "@deepseek-ai/dsh-client-ui-renderer": "workspace:*"
+  },
+  "files": [
+    "locale/*.json",
+    "lib/index.js",
+    "lib/client.js",
+    "lib/types/**/*.d.ts"
+  ]
+}
diff --git a/packages/client/ui-file-actions/src/client/context-menus.tsx b/packages/client/ui-file-actions/src/client/context-menus.tsx
new file mode 100644
index 0000000000..1208ff9c16
--- /dev/null
+++ b/packages/client/ui-file-actions/src/client/context-menus.tsx
@@ -0,0 +1,108 @@
+/** Original-file menu contributions owned by the file-action capability. */
+import type { Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
+import type {} from '@deepseek-ai/dsh-api-workspace-files/remote'
+import type {} from '@deepseek-ai/dsh-api-session-controller/remote'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type { FileActions, FileActionSource } from '../types.ts'
+import { fileMediaUrl } from '@deepseek-ai/dsh-util-workspace-path'
+import mime from 'mime'
+import type { FileActionKey } from './locales.ts'
+
+/**
+ * Register original-byte operations without requiring an application-opening plugin.
+ * @param ctx - menu and authorized file-read services.
+ * @param actions - file-action owner.
+ * @param t - localized labels and feedback.
+ */
+export function registerFileMenus(ctx: Context, actions: FileActions, t: (key: FileActionKey) => string): void {
+  const lifetime = new AbortController()
+  ctx.effect(() => () => { lifetime.abort() }, 'file actions: feedback lifetime')
+  const read = (sessionId: SessionId, path: string, mediaType: string, error: string) => async (signal: AbortSignal): Promise<Blob> => {
+    const result = await ctx.remote.workspaceFiles.readBytes(sessionId, path, {}, signal)
+    if (!result.ok) throw new Error(error)
+    return new Blob([new Uint8Array(result.value.data)], { type: mediaType })
+  }
+  const save = async (source: FileActionSource, mode: 'download' | 'saveAs'): Promise<void> => {
+    const result = await actions.save(source, mode)
+    lifetime.signal.throwIfAborted()
+    if (result.status === 'cancelled') return
+    ctx.contextMenus.notify(
+      t(result.status === 'requested' ? 'menu.downloadStarted' : mode === 'download' ? 'menu.downloaded' : 'menu.saved'),
+      true,
+      result.status !== 'saved' ? undefined : {
+        label: t(document.documentElement.dataset.platform === 'darwin' ? 'menu.finder' : 'menu.reveal'),
+        failureLabel: t('path.revealError'),
+        run: async () => {
+          lifetime.signal.throwIfAborted()
+          const opened = await ctx.remote.session.openWorkspacePath({ path: result.path, action: 'reveal' }, lifetime.signal)
+          if (!opened.ok) throw new Error('File location unavailable')
+        },
+      },
+    )
+  }
+  const copy = async (source: FileActionSource): Promise<void> => {
+    await actions.copyImage(source)
+    ctx.contextMenus.notify(t('menu.copied'), true)
+  }
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'file-actions.file', target: 'file', order: 200,
+    resolve: async ({ sessionId, path }, signal) => {
+      let absolutePath: string | undefined
+      try {
+        const result = await ctx.remote.workspaceFiles.stat(sessionId, path, signal)
+        absolutePath = result.ok ? result.value.absolutePath : undefined
+      } catch (_error) {
+        // Failed metadata disables operations that require the source file.
+        signal.throwIfAborted()
+      }
+      signal.throwIfAborted()
+      const available = absolutePath !== undefined
+      const mediaType = mime.getType(path) ?? ''
+      const source: FileActionSource = {
+        url: fileMediaUrl(document.baseURI, absolutePath ?? path) ?? path,
+        name: path.slice(Math.max(path.lastIndexOf('/'), path.lastIndexOf('\\')) + 1),
+        mediaType,
+        read: read(sessionId, path, mediaType, 'Original file unavailable'),
+      }
+      return [
+        ...mediaType.startsWith('image/') ? [
+          { id: 'copyImage', icon: { key: 'file-actions.copy' }, separatorBefore: true, failureLabel: t('menu.copyFailed'),
+            label: t('menu.copyImage'), disabled: !available, run: () => copy(source) },
+        ] : [],
+        ...mediaType.startsWith('image/') || !actions.canSaveAs ? [
+          { id: 'download', icon: { key: 'file-actions.download' }, failureLabel: t('menu.saveFailed'),
+            label: t('menu.download'), disabled: !available, run: () => save(source, 'download') },
+        ] : [],
+        ...actions.canSaveAs ? [
+          { id: 'saveAs', icon: { key: 'file-actions.save' }, failureLabel: t('menu.saveFailed'), label: t('menu.saveAs'),
+            disabled: !available, run: () => save(source, 'saveAs') },
+        ] : [],
+      ]
+    },
+  }), 'file actions: file menu')
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'file-actions.image', target: 'image', order: 100,
+    resolve: (target) => {
+      const { sessionId, path } = target
+      const name = target.name ?? path?.split(/[\\/]/u).pop()
+      const mediaType = target.mediaType || mime.getType(name ?? target.url) || undefined
+      const source: FileActionSource = {
+        ...target,
+        ...(name === undefined ? {} : { name }),
+        ...(mediaType === undefined ? {} : { mediaType }),
+        ...(path === undefined || sessionId === undefined ? {} : {
+          read: read(sessionId, path, mediaType ?? '', 'Original image unavailable'),
+        }),
+      }
+      return [
+        { id: 'copy', icon: { key: 'file-actions.copy' }, failureLabel: t('menu.copyFailed'), label: t('menu.copyImage'), run: () => copy(source) },
+        { id: 'download', icon: { key: 'file-actions.download' }, failureLabel: t('menu.saveFailed'), label: t('menu.download'), run: () => save(source, 'download') },
+        ...actions.canSaveAs ? [
+          { id: 'saveAs', icon: { key: 'file-actions.save' }, failureLabel: t('menu.saveFailed'), label: t('menu.saveAs'),
+            run: () => save(source, 'saveAs') },
+        ] : [],
+      ]
+    },
+  }), 'file actions: image menu')
+}
diff --git a/packages/client/ui-file-actions/src/client/files.ts b/packages/client/ui-file-actions/src/client/files.ts
new file mode 100644
index 0000000000..c16452dc69
--- /dev/null
+++ b/packages/client/ui-file-actions/src/client/files.ts
@@ -0,0 +1,96 @@
+/** Original-byte transfer, platform save selection, and pasteable image encoding. */
+import { resolveDragFileName } from '@deepseek-ai/dsh-util-file-drag'
+import type { DesktopFileActions, FileActions, FileActionSource, FileSaveResult } from '../types.ts'
+
+/**
+ * Keep compatible filename suffixes and repair known MIME conflicts without changing bytes.
+ * @param name - suggested original name.
+ * @param mediaType - source MIME, optionally including parameters.
+ * @returns safe filename preserving unknown formats.
+ */
+export function exportName(name: string | undefined, mediaType: string): string {
+  return resolveDragFileName({ name: name ?? 'image', mediaType })
+}
+
+/** File action owner; browser download requests never imply a saved path. */
+export class BrowserFileActions implements FileActions {
+  private downloadUrl: string | undefined
+  private readonly lifetime = new AbortController()
+  readonly canSaveAs: boolean
+  constructor(private readonly desktop: DesktopFileActions | undefined) {
+    this.canSaveAs = desktop !== undefined
+  }
+  private async read(source: FileActionSource): Promise<Blob> {
+    this.lifetime.signal.throwIfAborted()
+    if (source.read !== undefined) return source.read(this.lifetime.signal)
+    const url = new URL(source.url)
+    if (!['http:', 'https:', 'blob:', 'data:', 'dsh-app:'].includes(url.protocol)) throw new Error('Unsupported file source')
+    if (this.desktop !== undefined && ['http:', 'https:'].includes(url.protocol) && url.origin !== location.origin) {
+      const content = await this.desktop.readClipboardImage(url.href)
+      this.lifetime.signal.throwIfAborted()
+      return new Blob([new Uint8Array(content.bytes)], { type: content.mediaType || source.mediaType || '' })
+    }
+    const response = await fetch(source.url, { signal: this.lifetime.signal, referrerPolicy: 'no-referrer' })
+    if (!response.ok) throw new Error('Original file unavailable')
+    return response.blob()
+  }
+  async save(source: FileActionSource, mode: 'download' | 'saveAs'): Promise<FileSaveResult> {
+    this.lifetime.signal.throwIfAborted()
+    if (this.desktop !== undefined) {
+      const blob = source.read === undefined ? undefined : await source.read(this.lifetime.signal)
+      this.lifetime.signal.throwIfAborted()
+      const url = blob === undefined ? source.url : URL.createObjectURL(blob)
+      try {
+        const result = await this.desktop.save({ url, mode,
+          ...(source.name === undefined ? {} : { name: source.name }),
+          ...(blob?.type || source.mediaType ? { mediaType: blob?.type || source.mediaType } : {}),
+        })
+        this.lifetime.signal.throwIfAborted()
+        return result
+      } finally { if (blob !== undefined) URL.revokeObjectURL(url) }
+    }
+    if (mode === 'saveAs') throw new Error('Save as requires Desktop')
+    const suggested = source.name ?? (URL.canParse(source.url) ? new URL(source.url).pathname.split('/').pop() : undefined)
+    const blob = await this.read(source)
+    this.lifetime.signal.throwIfAborted()
+    const name = exportName(suggested, blob.type || source.mediaType || '')
+    const url = URL.createObjectURL(blob)
+    if (this.downloadUrl !== undefined) URL.revokeObjectURL(this.downloadUrl)
+    this.downloadUrl = url
+    const anchor = document.createElement('a')
+    anchor.href = url; anchor.download = name
+    document.body.append(anchor); anchor.click(); anchor.remove()
+    return { status: 'requested' }
+  }
+  async copyImage(source: FileActionSource): Promise<void> {
+    this.lifetime.signal.throwIfAborted()
+    const png = this.read(source).then(async (blob) => {
+      this.lifetime.signal.throwIfAborted()
+      if (blob.type === 'image/png') return blob
+      const objectUrl = URL.createObjectURL(blob)
+      const image = new Image()
+      image.src = objectUrl
+      await image.decode().catch((error: unknown) => { URL.revokeObjectURL(objectUrl); throw error })
+      try {
+        const canvas = document.createElement('canvas')
+        canvas.width = image.naturalWidth; canvas.height = image.naturalHeight
+        const context = canvas.getContext('2d')
+        if (context === null) throw new Error('Image conversion unavailable')
+        context.drawImage(image, 0, 0)
+        return await new Promise<Blob>((resolve, reject) => {
+          canvas.toBlob((value) => {
+            if (value === null) reject(new Error('Image conversion failed'))
+            else resolve(value)
+          }, 'image/png')
+        })
+      } finally { URL.revokeObjectURL(objectUrl) }
+    })
+    await navigator.clipboard.write([new ClipboardItem({ 'image/png': png })])
+  }
+  /** Cancel reads and release browser download URLs when the plugin unloads. */
+  dispose(): void {
+    this.lifetime.abort()
+    if (this.downloadUrl !== undefined) URL.revokeObjectURL(this.downloadUrl)
+    this.downloadUrl = undefined
+  }
+}
diff --git a/packages/client/ui-file-actions/src/client/index.ts b/packages/client/ui-file-actions/src/client/index.ts
new file mode 100644
index 0000000000..e6d652925c
--- /dev/null
+++ b/packages/client/ui-file-actions/src/client/index.ts
@@ -0,0 +1,39 @@
+/** Original-file actions independent of menu or image component ownership. */
+import { IconCopyOutlineRegular, IconDownloadOutlineRegular, IconSaveOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/dsh-client-ui-renderer/client'
+import type { DesktopFileActions, FileActions } from '../types.ts'
+import type {} from '@deepseek-ai/dsh-client-locale/client'
+import { registerFileMenus } from './context-menus.tsx'
+import { zh, en, ja, es, fr, de, ru, pt, type FileActionKey } from './locales.ts'
+import { BrowserFileActions } from './files.ts'
+
+export type { FileActions, FileActionSource, FileSaveResult } from '../types.ts'
+declare module '@deepseek-ai/cordis' {
+  interface Context { /** Original-file saving and image clipboard commands. */ fileActions: FileActions }
+}
+declare module '@deepseek-ai/dsh-client-ui-slots' {
+  interface LocaleNamespaceMap {
+    /** Original-file action labels and feedback. */
+    fileActions: FileActionKey
+  }
+}
+/** The native adapter is optional; Web uses its own download and save capabilities. */
+export const inject = []
+/** @param ctx - plugin-owned Client context. */
+export function apply(ctx: Context): void {
+  const desktop = (window as Window & { dshDesktop?: { fileActions?: DesktopFileActions } }).dshDesktop?.fileActions
+  const actions = new BrowserFileActions(desktop)
+  ctx.provide('fileActions', actions)
+  ctx.effect(() => () => { actions.dispose() }, 'file actions: lifetime')
+  ctx.inject(['contextMenus', 'slots', 'locale', 'remote', 'remote.workspaceFiles', 'remote.session'], (child) => {
+    child.effect(() => child.locale.register('fileActions', { zh, en, ja, es, fr, de, ru, pt }), 'file actions: locale')
+    child.slots.inject('contextMenu.icon', function* () {
+      for (const [key, Icon] of Object.entries({
+        'file-actions.copy': IconCopyOutlineRegular, 'file-actions.download': IconDownloadOutlineRegular,
+        'file-actions.save': IconSaveOutlineRegular,
+      })) yield child.slots.register({ name: 'contextMenu.icon', key }, Icon)
+    })
+    registerFileMenus(child, actions, child.locale.bind('fileActions'))
+  })
+}
diff --git a/packages/client/ui-file-actions/src/client/locales.ts b/packages/client/ui-file-actions/src/client/locales.ts
new file mode 100644
index 0000000000..74c7f8b763
--- /dev/null
+++ b/packages/client/ui-file-actions/src/client/locales.ts
@@ -0,0 +1,132 @@
+/** Original-file actions and completion feedback. */
+
+/** zh file-action labels. */
+export const zh = {
+  'menu.finder': '在 Finder 显示',
+  'menu.reveal': '在文件夹显示',
+  'menu.saveAs': '另存为…',
+  'menu.copied': '已复制',
+  'menu.copyImage': '复制图片',
+  'menu.download': '下载',
+  'menu.saveFailed': '无法保存文件，请检查源文件和目标位置后重试',
+  'menu.copyFailed': '无法复制，请检查内容是否可用后重试',
+  'menu.saved': '已保存',
+  'menu.downloadStarted': '已开始下载',
+  'menu.downloaded': '下载完成',
+  'path.revealError': '无法显示文件位置，请重试',
+} satisfies Record<string, string>
+
+/** File-action dictionary keys. */
+export type FileActionKey = keyof typeof zh
+
+/** en file-action labels. */
+export const en = {
+  'menu.finder': 'Show in Finder',
+  'menu.reveal': 'Show in folder',
+  'menu.saveAs': 'Save as…',
+  'menu.copied': 'Copied',
+  'menu.copyImage': 'Copy image',
+  'menu.download': 'Download',
+  'menu.saveFailed': 'Could not save. Check the source and destination, then retry.',
+  'menu.copyFailed': 'Could not copy. Check that the content is available, then retry.',
+  'menu.saved': 'Saved',
+  'menu.downloadStarted': 'Download started',
+  'menu.downloaded': 'Download complete',
+  'path.revealError': 'Could not show the file location. Try again.',
+} satisfies Record<FileActionKey, string>
+
+/** ja file-action labels. */
+export const ja = {
+  'menu.finder': 'Finder に表示',
+  'menu.reveal': 'フォルダーに表示',
+  'menu.saveAs': '名前を付けて保存…',
+  'menu.copied': 'コピーしました',
+  'menu.copyImage': '画像をコピー',
+  'menu.download': 'ダウンロード',
+  'menu.saveFailed': '保存できません。元のファイルと保存先を確認して再試行してください。',
+  'menu.copyFailed': 'コピーできません。内容を確認して再試行してください。',
+  'menu.saved': '保存しました',
+  'menu.downloadStarted': 'ダウンロードを開始しました',
+  'menu.downloaded': 'ダウンロードしました',
+  'path.revealError': 'ファイルの場所を表示できませんでした。もう一度お試しください。',
+} satisfies Record<FileActionKey, string>
+
+/** es file-action labels. */
+export const es = {
+  'menu.finder': 'Mostrar en Finder',
+  'menu.reveal': 'Mostrar en la carpeta',
+  'menu.saveAs': 'Guardar como…',
+  'menu.copied': 'Copiado',
+  'menu.copyImage': 'Copiar imagen',
+  'menu.download': 'Descargar',
+  'menu.saveFailed': 'No se pudo guardar. Compruebe el origen y el destino e inténtelo de nuevo.',
+  'menu.copyFailed': 'No se pudo copiar. Compruebe que el contenido esté disponible e inténtelo de nuevo.',
+  'menu.saved': 'Guardado',
+  'menu.downloadStarted': 'Descarga iniciada',
+  'menu.downloaded': 'Descarga completada',
+  'path.revealError': 'No se pudo mostrar la ubicación del archivo. Intentar otra vez.',
+} satisfies Record<FileActionKey, string>
+
+/** fr file-action labels. */
+export const fr = {
+  'menu.finder': 'Afficher dans le Finder',
+  'menu.reveal': 'Afficher dans le dossier',
+  'menu.saveAs': 'Enregistrer sous…',
+  'menu.copied': 'Copié',
+  'menu.copyImage': 'Copier l’image',
+  'menu.download': 'Télécharger',
+  'menu.saveFailed': 'Impossible d’enregistrer. Vérifiez la source et la destination, puis réessayez.',
+  'menu.copyFailed': 'Impossible de copier. Vérifiez que le contenu est disponible, puis réessayez.',
+  'menu.saved': 'Enregistré',
+  'menu.downloadStarted': 'Téléchargement démarré',
+  'menu.downloaded': 'Téléchargement terminé',
+  'path.revealError': "Impossible d'afficher l'emplacement du fichier. Essayer à nouveau.",
+} satisfies Record<FileActionKey, string>
+
+/** de file-action labels. */
+export const de = {
+  'menu.finder': 'Im Finder anzeigen',
+  'menu.reveal': 'Im Ordner anzeigen',
+  'menu.saveAs': 'Speichern unter…',
+  'menu.copied': 'Kopiert',
+  'menu.copyImage': 'Bild kopieren',
+  'menu.download': 'Herunterladen',
+  'menu.saveFailed': 'Speichern fehlgeschlagen. Prüfen Sie Quelle und Ziel und versuchen Sie es erneut.',
+  'menu.copyFailed': 'Kopieren fehlgeschlagen. Prüfen Sie, ob der Inhalt verfügbar ist, und versuchen Sie es erneut.',
+  'menu.saved': 'Gespeichert',
+  'menu.downloadStarted': 'Download gestartet',
+  'menu.downloaded': 'Download abgeschlossen',
+  'path.revealError': 'Der Dateispeicherort konnte nicht angezeigt werden. Versuchen Sie es erneut.',
+} satisfies Record<FileActionKey, string>
+
+/** ru file-action labels. */
+export const ru = {
+  'menu.finder': 'Показать в Finder',
+  'menu.reveal': 'Показать в папке',
+  'menu.saveAs': 'Сохранить как…',
+  'menu.copied': 'Скопировано',
+  'menu.copyImage': 'Копировать изображение',
+  'menu.download': 'Скачать',
+  'menu.saveFailed': 'Не удалось сохранить. Проверьте источник и место сохранения и повторите попытку.',
+  'menu.copyFailed': 'Не удалось скопировать. Проверьте доступность содержимого и повторите попытку.',
+  'menu.saved': 'Сохранено',
+  'menu.downloadStarted': 'Скачивание началось',
+  'menu.downloaded': 'Скачивание завершено',
+  'path.revealError': 'Не удалось показать местоположение файла. Попробуйте еще раз.',
+} satisfies Record<FileActionKey, string>
+
+/** pt file-action labels. */
+export const pt = {
+  'menu.finder': 'Mostrar no Finder',
+  'menu.reveal': 'Mostrar na pasta',
+  'menu.saveAs': 'Salvar como…',
+  'menu.copied': 'Copiado',
+  'menu.copyImage': 'Copiar imagem',
+  'menu.download': 'Baixar',
+  'menu.saveFailed': 'Não foi possível salvar. Verifique a origem e o destino e tente novamente.',
+  'menu.copyFailed': 'Não foi possível copiar. Verifique se o conteúdo está disponível e tente novamente.',
+  'menu.saved': 'Salvo',
+  'menu.downloadStarted': 'Download iniciado',
+  'menu.downloaded': 'Download concluído',
+  'path.revealError': 'Não foi possível mostrar o local do arquivo. Tente novamente.',
+} satisfies Record<FileActionKey, string>
diff --git a/packages/client/ui-file-actions/src/index.ts b/packages/client/ui-file-actions/src/index.ts
new file mode 100644
index 0000000000..901a1c7dee
--- /dev/null
+++ b/packages/client/ui-file-actions/src/index.ts
@@ -0,0 +1,4 @@
+/** File actions are supplied by the Client and its native adapter. */
+
+/** Host Loader entry. */
+export function apply(): void {}
diff --git a/packages/client/ui-file-actions/src/types.ts b/packages/client/ui-file-actions/src/types.ts
new file mode 100644
index 0000000000..8d31912f5f
--- /dev/null
+++ b/packages/client/ui-file-actions/src/types.ts
@@ -0,0 +1,45 @@
+/** Original content and native file-save outcomes. */
+/** Original content; the URL must identify the original, not a resized preview. */
+export interface FileActionSource {
+  readonly url: string
+  /** Read through the resource owner's authorized carrier when the source is not a browser URL. */
+  readonly read?: (signal: AbortSignal) => Promise<Blob>
+  readonly name?: string
+  readonly mediaType?: string
+}
+/** Result of an explicit save gesture. Only native completion supplies an absolute destination path. */
+export type FileSaveResult = { readonly status: 'cancelled' }
+  | { readonly status: 'requested' }
+  | { readonly status: 'saved'; readonly path: string }
+/** Desktop-owned operations exposed only to the trusted application frame. */
+export interface DesktopFileActions {
+  /**
+   * @param request - captured original URL, suggested filename and destination policy.
+   * @returns the completed destination path, or cancellation.
+   */
+  save(this: void, request: { url: string; name?: string; mediaType?: string; mode: 'download' | 'saveAs' }): Promise<FileSaveResult>
+  /**
+   * Read cross-origin originals only for the source-captured clipboard operation.
+   * @param url - HTTP(S) original fetched without credentials.
+   * @returns original bytes and response MIME.
+   */
+  readClipboardImage(this: void, url: string): Promise<{ bytes: Uint8Array; mediaType: string }>
+}
+/** UI-independent Client file actions. */
+export interface FileActions {
+  /**
+   * Save original bytes to the selected destination.
+   * @param source - original content.
+   * @param mode - download on either platform, or saveAs on Desktop only.
+   * @returns native save outcome or browser download request; rejects unsupported saveAs calls.
+   */
+  save(source: FileActionSource, mode: 'download' | 'saveAs'): Promise<FileSaveResult>
+  /**
+   * Copy a decoded, pasteable image.
+   * @param source - encoded original.
+   * @returns after a pasteable image is on the clipboard.
+   */
+  copyImage(source: FileActionSource): Promise<void>
+  /** Whether the Desktop adapter can offer an explicit save picker; always false on Web. */
+  readonly canSaveAs: boolean
+}
diff --git a/packages/client/ui-file-actions/tests/files.client.spec.ts b/packages/client/ui-file-actions/tests/files.client.spec.ts
new file mode 100644
index 0000000000..c227301dc3
--- /dev/null
+++ b/packages/client/ui-file-actions/tests/files.client.spec.ts
@@ -0,0 +1,245 @@
+// @vitest-environment jsdom
+import { Blob as NodeBlob } from 'node:buffer'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { BrowserFileActions, exportName } from '../src/client/files.ts'
+import type { DesktopFileActions } from '../src/types.ts'
+import { Context } from '@deepseek-ai/cordis'
+import { apply as clientApply } from '../src/client/index.ts'
+import { apply as hostApply } from '../src/index.ts'
+
+afterEach(() => { vi.unstubAllGlobals(); vi.restoreAllMocks() })
+
+beforeEach(() => {
+  vi.stubGlobal('ClipboardItem', class {
+    constructor(readonly content: Record<string, Promise<Blob>>) {}
+  })
+  vi.stubGlobal('navigator', { clipboard: { write: vi.fn(async (items: { content: Record<string, Promise<Blob>> }[]) => {
+    await items[0]!.content['image/png']
+  }) } })
+})
+
+function fakeImage(width: number, height: number) {
+  const image = { naturalWidth: width, naturalHeight: height, src: '', decode: vi.fn(async () => {}) }
+  vi.stubGlobal('Image', function Image() { return image })
+  vi.stubGlobal('URL', class extends URL {
+    static override createObjectURL = vi.fn(() => 'blob:conversion')
+    static override revokeObjectURL = vi.fn()
+  })
+  return image
+}
+
+function native(): DesktopFileActions {
+  return { save: vi.fn(async () => ({ status: 'saved' as const, path: '/downloads/original.png' })),
+    readClipboardImage: vi.fn(async () => ({ bytes: new Uint8Array([1, 2, 3]), mediaType: 'image/webp' })) }
+}
+
+describe('original filenames', () => {
+  it.each([
+    ['photo.jpeg', 'image/jpeg', 'photo.jpeg'],
+    ['photo.PNG', 'image/png; charset=binary', 'photo.PNG'],
+    ['photo.png', 'image/webp', 'photo.webp'],
+    ['animation', 'image/gif', 'animation.gif'],
+    ['drawing.custom', 'application/x-custom', 'drawing.custom'],
+    ['CON.png', 'image/png', '_CON.png'],
+    ['../a:b.png', 'image/png', '_a_b.png'],
+    ['... ', 'image/png', 'file.png'],
+  ])('names %s from %s', (name, mime, expected) => { expect(exportName(name, mime)).toBe(expected) })
+  it('bounds multibyte names and unusually long extensions', () => {
+    expect(exportName(undefined, '')).toBe('image')
+    for (const name of ['图'.repeat(300) + '.png', 'a.' + 'x'.repeat(1000)]) {
+      expect(new TextEncoder().encode(exportName(name, '')).length).toBeLessThanOrEqual(255)
+    }
+  })
+})
+
+describe('file actions', () => {
+  it('saves original encoded bytes and returns each completed destination without retaining history', async () => {
+    vi.stubGlobal('Blob', NodeBlob)
+    const bridge = native(), actions = new BrowserFileActions(bridge)
+    const source = { url: 'https://images.example/chart', name: 'chart.png', mediaType: 'image/png' }
+    expect(actions.canSaveAs).toBe(true)
+    await expect(actions.save(source, 'download')).resolves.toEqual({ status: 'saved', path: '/downloads/original.png' })
+    expect(bridge.save).toHaveBeenCalledWith({ ...source, mode: 'download' })
+    expect(bridge.readClipboardImage).not.toHaveBeenCalled()
+    vi.mocked(bridge.save).mockResolvedValueOnce({ status: 'saved', path: '/elsewhere/original.png' })
+    await expect(actions.save(source, 'saveAs')).resolves.toEqual({ status: 'saved', path: '/elsewhere/original.png' })
+    vi.mocked(bridge.save).mockResolvedValue({ status: 'cancelled' })
+    await expect(actions.save({ ...source, url: source.url + '2' }, 'saveAs')).resolves.toEqual({ status: 'cancelled' })
+    actions.dispose()
+  })
+  it('uses an authorized resource reader without converting bytes', async () => {
+    vi.stubGlobal('Blob', NodeBlob)
+    const bridge = native(), actions = new BrowserFileActions(bridge)
+    fakeImage(1, 1)
+    const bytes = new Uint8Array([0, 255, 128, 10])
+    await actions.save({ url: 'file-identity', name: 'report.bin', read: async () => new Blob([bytes]) }, 'saveAs')
+    expect(bridge.readClipboardImage).not.toHaveBeenCalled()
+    expect(bridge.save).toHaveBeenCalledWith({ url: 'blob:conversion', name: 'report.bin', mode: 'saveAs' })
+    expect(vi.mocked(URL).revokeObjectURL).toHaveBeenCalledWith('blob:conversion')
+    actions.dispose()
+  })
+  it('rejects save-as on Web even when a browser picker exists, before reading the source', async () => {
+    const read = vi.fn(async () => new Blob())
+    const picker = vi.fn()
+    vi.stubGlobal('showSaveFilePicker', picker)
+    const actions = new BrowserFileActions(undefined)
+    expect(actions.canSaveAs).toBe(false)
+    await expect(actions.save({ url: 'original', name: 'a.gif', read }, 'saveAs')).rejects.toThrow('requires Desktop')
+    expect(picker).not.toHaveBeenCalled()
+    expect(read).not.toHaveBeenCalled()
+    actions.dispose()
+  })
+  it.each([false, true])('does not save a remote read that finishes after the plugin unloads (Desktop: %s)', async (desktop) => {
+    const bridge = native()
+    let settle!: (value: Blob) => void
+    const read = vi.fn(() => new Promise<Blob>((resolve) => { settle = resolve }))
+    const actions = new BrowserFileActions(desktop ? bridge : undefined)
+    const pending = actions.save({ url: 'https://example.org/image', read }, 'download')
+    actions.dispose(); settle(new Blob())
+    await expect(pending).rejects.toThrow()
+    expect(bridge.save).not.toHaveBeenCalled()
+  })
+  it('converts a browser-decodable original to PNG for the browser clipboard in Desktop', async () => {
+    vi.stubGlobal('Blob', NodeBlob)
+    const bitmap = fakeImage(2, 3)
+    const drawImage = vi.fn()
+    // jsdom has no canvas renderer; the browser scenario verifies actual GIF decoding.
+    vi.spyOn(HTMLCanvasElement.prototype, 'getContext').mockReturnValue({ drawImage } as never)
+    vi.spyOn(HTMLCanvasElement.prototype, 'toBlob').mockImplementation((callback) => { callback(new Blob(['PNG'], { type: 'image/png' })) })
+    const bridge = native(), actions = new BrowserFileActions(bridge)
+    const write = vi.spyOn(navigator.clipboard, 'write')
+    await actions.copyImage({ url: 'https://example.org/image' })
+    expect(drawImage).toHaveBeenCalledWith(bitmap, 0, 0)
+    expect(vi.mocked(URL).revokeObjectURL).toHaveBeenCalledWith('blob:conversion')
+    expect(write).toHaveBeenCalledOnce()
+    actions.dispose()
+  })
+
+  it('releases original browser download URLs and never exposes a fabricated saved path', async () => {
+    const blob = new Blob(['original'], { type: 'image/gif' })
+    vi.stubGlobal('fetch', vi.fn(async () => ({ ok: true, blob: async () => blob })))
+    const create = vi.fn().mockReturnValueOnce('blob:first').mockReturnValueOnce('blob:second')
+    const revoke = vi.fn(), click = vi.spyOn(HTMLAnchorElement.prototype, 'click').mockImplementation(() => {})
+    vi.stubGlobal('URL', class extends URL { static override createObjectURL = create; static override revokeObjectURL = revoke })
+    const actions = new BrowserFileActions(undefined)
+    expect(actions.canSaveAs).toBe(false)
+    await expect(actions.save({ url: 'https://images.example/original.gif' }, 'download')).resolves.toEqual({ status: 'requested' })
+    await expect(actions.save({ url: 'https://images.example/original.gif' }, 'download')).resolves.toEqual({ status: 'requested' })
+    expect(create).toHaveBeenCalledWith(blob)
+    expect(click).toHaveBeenCalledTimes(2)
+    expect(revoke).toHaveBeenCalledWith('blob:first')
+    actions.dispose()
+    expect(revoke).toHaveBeenLastCalledWith('blob:second')
+    await expect(actions.save({ url: 'https://images.example/original.gif' }, 'download')).rejects.toThrow()
+  })
+
+  it('does not request a browser download when the network fails', async () => {
+    const click = vi.spyOn(HTMLAnchorElement.prototype, 'click').mockImplementation(() => {})
+    const actions = new BrowserFileActions(undefined)
+    vi.stubGlobal('fetch', vi.fn(async () => ({ ok: false })))
+    await expect(actions.save({ url: 'https://images.example/missing' }, 'download')).rejects.toThrow('unavailable')
+    expect(click).not.toHaveBeenCalled()
+    actions.dispose()
+  })
+
+  it.each([
+    { mediaType: 'application/pdf', expected: 'image.pdf' },
+    { mediaType: undefined, expected: 'image' },
+  ])('downloads authorized opaque sources with suggested MIME $mediaType', async ({ mediaType, expected }) => {
+    const blob = new Blob(['original'])
+    fakeImage(1, 1)
+    const click = vi.spyOn(HTMLAnchorElement.prototype, 'click').mockImplementation(function (this: HTMLAnchorElement) {
+      expect(this.download).toBe(expected)
+      expect(this.href).toBe('blob:conversion')
+    })
+    const actions = new BrowserFileActions(undefined)
+    try {
+      await expect(actions.save({ url: 'authorized-resource', read: async () => blob,
+        ...(mediaType === undefined ? {} : { mediaType }),
+      }, 'download')).resolves.toEqual({ status: 'requested' })
+      expect(click).toHaveBeenCalledOnce()
+      expect(vi.mocked(URL).createObjectURL).toHaveBeenCalledWith(blob)
+    } finally { actions.dispose() }
+  })
+
+  it.each(['canvas', 'encoding'] as const)('releases a decoded image when %s conversion fails', async (failure) => {
+    fakeImage(1, 1)
+    vi.spyOn(HTMLCanvasElement.prototype, 'getContext').mockReturnValue(failure === 'canvas' ? null : { drawImage: vi.fn() } as never)
+    vi.spyOn(HTMLCanvasElement.prototype, 'toBlob').mockImplementation((callback) => { callback(null) })
+    const bridge = native(), actions = new BrowserFileActions(bridge)
+    await expect(actions.copyImage({ url: 'identity', read: async () => new Blob([], { type: 'image/gif' }) })).rejects.toThrow('conversion')
+    expect(vi.mocked(URL).revokeObjectURL).toHaveBeenCalledWith('blob:conversion')
+    actions.dispose()
+  })
+
+  it.each([false, true])('passes a PNG promise to the browser clipboard during the gesture (Desktop: %s)', async (desktop) => {
+    const blob = new Blob(['png'], { type: 'image/png' })
+    let content!: Record<string, Promise<Blob>>
+    vi.stubGlobal('ClipboardItem', function ClipboardItem(value: Record<string, Promise<Blob>>) { content = value })
+    const write = vi.fn(async () => { await content['image/png'] })
+    vi.stubGlobal('navigator', { clipboard: { write } })
+    const actions = new BrowserFileActions(desktop ? native() : undefined)
+    await actions.copyImage({ url: 'identity', read: async () => blob })
+    expect(await content['image/png']).toBe(blob)
+    expect(write).toHaveBeenCalledOnce()
+    actions.dispose()
+  })
+
+  it.each([false, true])('binds the optional Desktop adapter (%s) for the plugin lifetime', async (desktop) => {
+    const bridge = native()
+    if (desktop) vi.stubGlobal('dshDesktop', { fileActions: bridge })
+    const ctx = new Context(), fiber = ctx.plugin({ apply: clientApply })
+    await fiber.await()
+    expect(hostApply).not.toThrow()
+    expect(ctx.fileActions.canSaveAs).toBe(desktop)
+    await fiber.dispose()
+  })
+})
+
+
+it('releases an object URL when the source image cannot decode', async () => {
+  const image = fakeImage(1, 1)
+  image.decode.mockRejectedValue(new Error('Decode failed'))
+  const actions = new BrowserFileActions(native())
+  try {
+    await expect(actions.copyImage({ url: 'identity', read: async () => new Blob([], { type: 'image/gif' }) }))
+      .rejects.toThrow('Decode failed')
+    expect(vi.mocked(URL).revokeObjectURL).toHaveBeenCalledWith('blob:conversion')
+  } finally { actions.dispose() }
+})
+
+it('passes captured URLs and suggested MIME to the native download without reading bytes', async () => {
+  const bridge = native(), actions = new BrowserFileActions(bridge)
+  try {
+    await actions.save({ url: 'https://example.com/image', name: 'image', mediaType: 'image/gif' }, 'download')
+    expect(bridge.save).toHaveBeenCalledWith({ url: 'https://example.com/image', name: 'image', mediaType: 'image/gif', mode: 'download' })
+    expect(bridge.readClipboardImage).not.toHaveBeenCalled()
+  } finally { actions.dispose() }
+})
+
+it('lets Chromium name URL-only downloads and keeps authorized MIME when no name is supplied', async () => {
+  const bridge = native(), actions = new BrowserFileActions(bridge)
+  fakeImage(1, 1)
+  try {
+    await actions.save({ url: 'https://example.com/image' }, 'download')
+    expect(bridge.save).toHaveBeenLastCalledWith({ url: 'https://example.com/image', mode: 'download' })
+    await actions.save({ url: 'authorized-image', read: async () => new Blob(['GIF'], { type: 'image/gif' }) }, 'saveAs')
+    expect(bridge.save).toHaveBeenLastCalledWith({ url: 'blob:conversion', mediaType: 'image/gif', mode: 'saveAs' })
+  } finally { actions.dispose() }
+})
+
+it('rejects unsupported clipboard sources and uses suggested MIME when a remote response has none', async () => {
+  const bridge = native(), actions = new BrowserFileActions(bridge)
+  const write = vi.spyOn(navigator.clipboard, 'write')
+  vi.mocked(bridge.readClipboardImage).mockResolvedValue({ bytes: new Uint8Array([1, 2]), mediaType: '' })
+  fakeImage(1, 1)
+  vi.spyOn(HTMLCanvasElement.prototype, 'getContext').mockReturnValue({ drawImage: vi.fn() } as never)
+  vi.spyOn(HTMLCanvasElement.prototype, 'toBlob').mockImplementation((callback) => { callback(new Blob(['PNG'], { type: 'image/png' })) })
+  try {
+    await expect(actions.copyImage({ url: 'file:///private/image.png' })).rejects.toThrow('Unsupported')
+    write.mockClear()
+    await actions.copyImage({ url: 'https://example.com/image', mediaType: 'image/png' })
+    await actions.copyImage({ url: 'https://example.com/untyped-image' })
+    expect(write).toHaveBeenCalledTimes(2)
+  } finally { actions.dispose() }
+})
diff --git a/packages/client/ui-file-actions/tests/plugin-menus.client.spec.ts b/packages/client/ui-file-actions/tests/plugin-menus.client.spec.ts
new file mode 100644
index 0000000000..4b2a0b57bb
--- /dev/null
+++ b/packages/client/ui-file-actions/tests/plugin-menus.client.spec.ts
@@ -0,0 +1,72 @@
+// @vitest-environment jsdom
+/** File-operation contributions survive removal of application-opening providers. */
+import { SessionId } from '@deepseek-ai/dsh-session'
+import { afterEach, expect, it, onTestFinished, vi } from 'vitest'
+import { MenuRegistry } from '@deepseek-ai/dsh-client-ui-context-menu/src/client/registry.ts'
+import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { apply } from '../src/client/index.ts'
+import type { FileActionSource } from '../src/types.ts'
+
+afterEach(() => { vi.unstubAllGlobals() })
+
+it('contributes file and image operations without open-in-app and withdraws them on unload', async () => {
+  const runtime = await SlotTestRuntime.create()
+  onTestFinished(() => runtime.dispose())
+  const { ctx } = runtime
+  await runtime.declare({
+    'contextMenu.icon': { kind: 'keyed', scope: 'root', inline: true },
+  })
+  const failure = vi.fn(), notify = vi.fn()
+  const registry = new MenuRegistry(failure)
+  ctx.provide('contextMenus', { register: registry.register.bind(registry), notify } as never)
+  const registerLocale = vi.fn(() => () => {})
+  ctx.provide('locale', { register: registerLocale, bind: () => (key: string) => key } as never)
+  const readBytes = vi.fn(async () => ({ ok: true as const, value: { data: [1, 2, 3] } }))
+  const workspaceFiles = {
+    stat: async () => ({ ok: true, value: { absolutePath: '/workspace/image.png' } }),
+    readBytes,
+  }
+  const session = { openWorkspacePath: vi.fn() }
+  runtime.remote.provideNamespaces({ workspaceFiles, session })
+  const fiber = ctx.plugin({ apply })
+  await fiber.await()
+  try {
+    await vi.waitFor(() => { expect(registerLocale).toHaveBeenCalledOnce() })
+    expect(ctx.slots.entries('contextMenu.icon').map(entry => entry.options.key)).toEqual([
+      'file-actions.copy', 'file-actions.download', 'file-actions.save',
+    ])
+    const file = registry.resolve({ kind: 'file', value: { sessionId: SessionId('files'), path: 'image.png' } })
+    await file.ready
+    expect(file.source.getSnapshot().map(action => action.id)).toEqual([
+      'file-actions.file/copyImage', 'file-actions.file/download',
+    ])
+    expect(file.source.getSnapshot().find(action => action.id.endsWith('/download'))?.disabled).toBe(false)
+    const save = vi.spyOn(ctx.fileActions, 'save').mockImplementation(async (source: FileActionSource) => {
+      await source.read!(new AbortController().signal)
+      return { status: 'requested' }
+    })
+    const downloading = registry.resolve({ kind: 'file', value: { sessionId: SessionId('files'), path: 'report.txt' } })
+    await downloading.ready
+    expect(downloading.source.getSnapshot().map(action => action.id)).toEqual(['file-actions.file/download'])
+    downloading.select('file-actions.file/download')
+    await vi.waitFor(() => { expect(notify).toHaveBeenCalledWith('menu.downloadStarted', true, undefined) })
+    expect(save).toHaveBeenCalledOnce()
+    expect(readBytes).toHaveBeenCalledWith(SessionId('files'), 'report.txt', {}, expect.any(AbortSignal))
+    save.mockRestore()
+    const image = registry.resolve({ kind: 'image', value: { url: 'https://example.com/image.png' } })
+    await image.ready
+    expect(image.source.getSnapshot().map(action => action.id)).toEqual([
+      'file-actions.image/copy', 'file-actions.image/download',
+    ])
+    await fiber.dispose()
+    expect(ctx.slots.entries('contextMenu.icon')).toEqual([])
+    expect(file.source.getSnapshot()).toEqual([])
+    expect(image.source.getSnapshot()).toEqual([])
+    file.dispose()
+    image.dispose()
+    expect(failure).not.toHaveBeenCalled()
+  } finally {
+    registry.dispose()
+    await runtime.dispose()
+  }
+})
diff --git a/packages/client/ui-file-actions/tsconfig.json b/packages/client/ui-file-actions/tsconfig.json
new file mode 100644
index 0000000000..fba885fd34
--- /dev/null
+++ b/packages/client/ui-file-actions/tsconfig.json
@@ -0,0 +1,39 @@
+{
+  "extends": "../../../tsconfig.base.client.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types"
+  },
+  "include": [
+    "src"
+  ],
+  "references": [
+    {
+      "path": "../ui-primitives"
+    },
+    {
+      "path": "../../../vendor/cordis"
+    },
+    {
+      "path": "../../api/session-controller/tsconfig.client.json"
+    },
+    {
+      "path": "../../util/file-drag"
+    },
+    {
+      "path": "../locale/tsconfig.client.json"
+    },
+    {
+      "path": "../ui-context-menu"
+    },
+    {
+      "path": "../../api/workspace-files/tsconfig.client.json"
+    },
+    {
+      "path": "../../core/session"
+    },
+    {
+      "path": "../../util/workspace-path"
+    }
+  ]
+}
diff --git a/packages/client/ui-file-actions/tsdown.config.ts b/packages/client/ui-file-actions/tsdown.config.ts
new file mode 100644
index 0000000000..7aa03cebc1
--- /dev/null
+++ b/packages/client/ui-file-actions/tsdown.config.ts
@@ -0,0 +1,3 @@
+import { clientBundle } from '../tsdown.client.ts'
+
+export default clientBundle(import.meta.dirname, ['lib/types/index.js'])
diff --git a/packages/client/ui-file-drag/package.json b/packages/client/ui-file-drag/package.json
index 4699eeace0..45623320cb 100644
--- a/packages/client/ui-file-drag/package.json
+++ b/packages/client/ui-file-drag/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-file-drag",
   "description": "Application-owned file drag transfers and localized failure feedback",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-goal/package.json b/packages/client/ui-goal/package.json
index c4079e0c6e..3145c8a1f9 100644
--- a/packages/client/ui-goal/package.json
+++ b/packages/client/ui-goal/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-goal",
   "description": "Session goal surface: GoalBar docked above the composer, read from the goal session projection",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-input-trigger/package.json b/packages/client/ui-input-trigger/package.json
index 77e7ae4517..cf64fffac3 100644
--- a/packages/client/ui-input-trigger/package.json
+++ b/packages/client/ui-input-trigger/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-input-trigger",
   "description": "Input trigger pipeline: '/' and '@' detection, candidate menu, pick routing to registered sources",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-jobs/package.json b/packages/client/ui-jobs/package.json
index 86c3185a25..e37f852ae6 100644
--- a/packages/client/ui-jobs/package.json
+++ b/packages/client/ui-jobs/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-jobs",
   "description": "Session-header background-job list with on-demand streaming record panels",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "type": "module",
   "main": "lib/index.js",
   "types": "lib/types/index.d.ts",
diff --git a/packages/client/ui-layout/README.i18n.yaml b/packages/client/ui-layout/README.i18n.yaml
index 4ad7481ef7..a89c7c4b40 100644
--- a/packages/client/ui-layout/README.i18n.yaml
+++ b/packages/client/ui-layout/README.i18n.yaml
@@ -15,8 +15,8 @@
   en: d152484eb41ac6b4
   zh: 09388d293f9be9cb
 /deepseek-ai-dsh-client-ui-layout/use-this-package:
-  en: cc6e9021ba3001bc
-  zh: 97444857762b4e8e
+  en: 2a0687d0683eaa9a
+  zh: 402c55259770f565
 /deepseek-ai-dsh-client-ui-layout/use-this-package/window-chrome-seat:
   en: 7eac53b38d0777fe
   zh: 7f9422dff671ba50
@@ -24,8 +24,8 @@
   en: 5ac34303ad90b484
   zh: abcc4a1dcf28391e
 /deepseek-ai-dsh-client-ui-layout/understand-the-implementation:
-  en: 5ab6b311a912fb06
-  zh: d7e88894686b1682
+  en: e3cb25f05902369a
+  zh: c1a8f049a7a4effb
 /deepseek-ai-dsh-client-ui-layout/further-exploration:
   en: 74de780b4592e28e
   zh: a413f06f8ec406d0
@@ -36,8 +36,8 @@
   en: ca75c51c89c2c9b0
   zh: de54f3467ef3b9be
 /deepseek-ai-dsh-client-ui-layout/known-limitations-and-deferred-work:
-  en: da92b97ac60d989f
-  zh: 5816b861728f1a04
+  en: 834ae31817179718
+  zh: d2cff416fd0f643a
 /deepseek-ai-dsh-client-ui-layout/known-limitations-and-deferred-work/dev-note:
   en: e67f633dc6fe7773
   zh: 3bb0c20c93f16f98
diff --git a/packages/client/ui-layout/README.md b/packages/client/ui-layout/README.md
index 43c61b89d1..8a20476270 100644
--- a/packages/client/ui-layout/README.md
+++ b/packages/client/ui-layout/README.md
@@ -25,9 +25,13 @@ This package provides the Web GUI's three-column AppFrame, edge-column widths, a
 <a id="use-this-package"></a>
 ## Use this package
 
-Desktop Mod+B toggles the left sidebar through the same layout action used by its controls. The shortcut command is unavailable behind modal dialogs and yields to terminal input.
+Desktop Mod+B toggles the left sidebar through the same layout action used by its controls. The shortcut remains available inside the navigation drawer, is unavailable behind other modal dialogs, and yields to terminal input.
 
-The root slot composes the sidebar, main content, and right column. The sidebar spans 264–420px, defaults to 280px, and retains a 56px rail when collapsed; below 1024px it collapses automatically, and opening the right panel collapses a manually expanded sidebar. The right panel first opens at 45% of the viewport, then retains the user's pixel preference, capped at 70%. To protect 400px for the center, the frame first reduces the right panel to 300px, then reports insufficient room so its occupant closes it, and only then compresses the center further. Dragging has no transition delay; the right handle is absent while closed or fullscreen.
+The root slot composes the sidebar, main content, and right column. The sidebar spans 264–420px, defaults to 280px, and retains a 56px rail when collapsed at widths of 768px and above. Below 768px, without a native Windows caption, it uses a modal drawer without reserving a column; the header retains the reopen controls, and navigation closes the drawer. Below 1024px it collapses automatically, and opening the right panel collapses a manually expanded sidebar. The right panel first opens at 45% of the viewport, then retains the user's pixel preference, capped at 70%. To protect 400px for the center, the frame first reduces the right panel to 300px, then reports insufficient room so its occupant closes it, and only then compresses the center further. Dragging has no transition delay; the right handle is absent while closed or fullscreen.
+
+When the browser reports a folded device in landscape and the frame is at least 768px wide, the expanded sidebar occupies half the frame. This midpoint heuristic targets book postures with a vertical center fold; it does not identify the hinge direction or reserve its physical width, so horizontal or off-center folds are not supported by this adjustment. Its resize handle is hidden; unfolding restores the saved width. Fold changes at a stable viewport width use the existing track transition; reduced motion disables it. Browsers without the device-posture media feature keep the ordinary layout.
+
+The drawer mask fades with the panel’s transition duration and easing on both open and close; reduced motion disables both transitions. Entering drawer mode from an already collapsed sidebar hides the drawer immediately; an expanded sidebar keeps its closing slide. The drawer has no edge divider, and its frame does not scroll. On macOS, the drawer uses the same opaque background as Web; window vibrancy applies only to the ordinary sidebar. The frame fills the shell’s layout viewport, retaining its height while the keyboard opens. Drawer backing and mask cover the shell’s full height, including `shell.bottom`, above fullscreen and floating right panels. Browser-owned status and address bars remain outside the shell; the layout adds no synthetic safe-area insets.
 
 Global panels occupy the root-scoped `main` keyed slot; `conversation` is the reserved key for the Conversation. `ctx.layout.selectPanel(id)` selects a registered panel, and `null` selects the Conversation without changing the current Session. The Plugins page contributes one of the shipped global panels.
 
@@ -54,6 +58,8 @@ The presenter consumes resolved theme snapshots and projects them onto the docum
 <details>
 <summary>Implementation internals — click to expand</summary>
 
+The root registration supplies folded-landscape posture through an injected observable. The renderer owns its media-query subscription; AppFrame reads the snapshot through the bound hook. Client registrations running without browser media APIs use the ordinary layout.
+
 `selectPanel(id)` checks the live `main` registry before changing selection; an absent key throws and leaves the current panel intact. `beginNavigation()` returns an abort signal for an asynchronous UI navigation. A later call, a valid panel selection (including repeated selection), or layout disposal aborts that signal without cancelling underlying Session creation. Consumers check the signal before committing navigation or moving drafts.
 
 One registration declares the frame slots and binds `ctx.layout` methods `selectPanel`, `toggleSidebar`, `openRightbar(track, fullscreen)`, and `closeRightbar`. One root store separates `panelInfo` selection from `layoutInfo` measurements, width preferences, and presentation reports. `ctx.layout.panelInfo` and the standard `usePanelInfo` hook share the same selection source; AppFrame subscribes to the stable layout object. The `rightbar` owner supplies actual `width`, `viewportWidth`, and normal-presentation eligibility `canShow`; insufficient room causes a deterministic close, never automatic reopening on widening. Fullscreen hides the width handle without releasing a track the occupant retains. AppFrame keeps the column containers mounted. The right column's root controller renders `rightbar.session` through `SessionProvider` only while the Conversation is selected; its unmount report releases the track. The independent title component uses the selected Session title only while the Conversation is visible, with the build-configured product title or localized `common.brand.localBuild` as its fallback; locale revisions update that fallback. The theme presenter is a second effect: pure DOM writes from resolved snapshots — initial state through the getter once, then event-driven only, with no React path. It applies palette, font-size, font-list, and token variables before measuring the rendered background as the single color authority. Fullscreen presentation suppresses grid and handle transitions; its occupant reports the new columns only after covering the frame. Fullscreen exit keeps transitions suppressed while the frame installs its destination geometry: close removes the right track, and restore retains it. Subsequent normal geometry actions restore ordinary transitions.
@@ -92,7 +98,7 @@ None; this package neither assembles nor sends a provider request.
 These limits define the current layout behavior. They are current package constraints, not a general window-manager comparison or a task backlog.
 
 - **Panel geometry is transient** — reload restores the sidebar default and the right panel hidden; each dragged width is one frame-wide preference, not a per-Session fact.
-- **Extremely narrow windows** — after the right panel closes, the center may still fall below 400px; the left 56px rail remains.
+- **Extremely narrow windows** — after the right panel closes, the center may still fall below 400px; browser drawers reserve no sidebar width below 768px.
 - **Track and panel travel on one shared curve only while animating** — during a discrete open/close the frame sets `data-animating` and its track transition and the occupant's slide read the same duration and easing variables; an occupant that used its own would detach the panel's edge from the conversation's while squeezing. Drags and instant presentation switches run transition-free, so the curve does not cover them.
 - **No scroll anchoring during squeeze reflow** — layout changes may move the reader's viewport.
 
diff --git a/packages/client/ui-layout/README.zh.md b/packages/client/ui-layout/README.zh.md
index 9b426dcdef..e19b7a0bd2 100644
--- a/packages/client/ui-layout/README.zh.md
+++ b/packages/client/ui-layout/README.zh.md
@@ -25,9 +25,13 @@ kind: "package-reference"
 <a id="use-this-package"></a>
 ## 使用本包
 
-桌面 Mod+B 通过与控件共用的布局操作切换左侧栏。模态弹窗打开时此快捷键不可用；终端输入优先。
+桌面 Mod+B 通过与控件共用的布局操作切换左侧栏。此快捷键在导航抽屉内仍可用，在其他模态弹窗打开时不可用；终端输入优先。
 
-本插件在 root slot 中组合侧边栏、主内容和右栏。侧边栏宽度为 264～420px，默认为 280px，收起后保留 56px 控制栏；窗口宽度低于 1024px 时自动收起，打开右侧面板也会收起手动展开的侧边栏。右侧面板首次打开时使用视口宽度的 45%，之后保留用户的像素宽度偏好，上限为 70%。为给中栏保留 400px，框架先将右侧面板缩减至 300px，再报告空间不足，使占用方将其关闭，最后才进一步压缩中栏。拖动没有过渡延迟；右侧手柄在关闭或全屏时不显示。
+本插件在 root slot 中组合侧边栏、主内容和右栏。侧边栏宽度为 264～420px，默认为 280px，在宽度不低于 768px 时，收起后保留 56px 控制栏。低于 768px 且没有原生 Windows 顶栏时，采用模态抽屉，不占据列宽；标题区域保留重新打开的控件，导航后关闭抽屉。窗口宽度低于 1024px 时自动收起，打开右侧面板也会收起手动展开的侧边栏。右侧面板首次打开时使用视口宽度的 45%，之后保留用户的像素宽度偏好，上限为 70%。为给中栏保留 400px，框架先将右侧面板缩减至 300px，再报告空间不足，使占用方将其关闭，最后才进一步压缩中栏。拖动没有过渡延迟；右侧手柄在关闭或全屏时不显示。
+
+当浏览器报告设备处于横屏半折叠状态，且框架宽度不低于 768px 时，展开的侧边栏占据一半宽度。这一中点启发式面向折痕竖直且位于中央的书本姿态；它不识别铰链方向，也不为实体铰链宽度留空，因此这项调整不支持水平或偏离中央的折痕。此时隐藏拖拽手柄；完全展开后恢复保存的宽度。视口宽度不变时，折叠状态切换复用现有的列宽过渡；减少动态效果时禁用该过渡。不支持 device-posture 媒体特性的浏览器继续使用常规布局。
+
+抽屉遮罩使用与面板相同的时长和缓动，在打开与关闭时渐变透明度；减少动态效果时两者均不播放动画。从已收起的侧栏切换到抽屉布局时，抽屉立即隐藏；已展开的侧栏保留收起动画。抽屉边缘不绘制分隔线，外层框架不滚动。macOS 抽屉与 Web 使用相同的不透明背景，毛玻璃仅用于普通侧栏。框架铺满外壳的布局视口，在键盘抬起时保留原有高度。抽屉背景和遮罩覆盖外壳完整高度，包括 `shell.bottom`，并显示在全屏和浮动右侧面板之上。浏览器管理的状态栏和地址栏位于外壳之外；布局不添加模拟安全区边距。
 
 全局面板占据 root 作用域的 `main` keyed slot；`conversation` 是为会话界面保留的 key。`ctx.layout.selectPanel(id)` 选中已注册面板，`null` 则选中会话界面，但不改变当前会话。Plugins 页面是默认组合中的一个全局面板。
 
@@ -54,6 +58,8 @@ Windows Electron 的 `data-windows-titlebar` 标记在所有列上方预留顶
 <details>
 <summary>实现细节——点击展开</summary>
 
+root 注册通过注入的可观察源提供横屏折叠状态，由渲染器负责媒体查询订阅，AppFrame 只通过绑定的 hook 读取快照。在没有浏览器媒体 API 的环境中运行客户端注册时，使用常规布局。
+
 `selectPanel(id)` 在改变选中态前检查实时 `main` 注册表；缺失的 key 会抛错并保留当前面板。`beginNavigation()` 为异步 UI 导航返回 abort signal。后续调用、有效面板选择（包括重复选择）或布局释放会中止该 signal，但不取消底层会话创建。消费方在提交导航或搬移草稿前检查 signal。
 
 一次注册声明框架的子 slot，并绑定 `ctx.layout` 的 `selectPanel`、`toggleSidebar`、`openRightbar(track, fullscreen)` 与 `closeRightbar`。同一个 root 存储把 `panelInfo` 选中态与 `layoutInfo` 测量、宽度偏好、呈现报告分开。`ctx.layout.panelInfo` 与标准 `usePanelInfo` hook 共用同一个选中态来源；AppFrame 订阅引用稳定的布局对象。`rightbar` owner 提供实际 `width`、`viewportWidth`，以及表示能否以普通模式呈现的 `canShow`；占用方在空间不足时执行确定性的收起，变宽不自行重新展开。全屏隐藏宽度手柄，但不自行释放占用方要求保留的轨道。AppFrame 保持各列容器挂载。右栏的 root 控制器仅在选中会话界面时，经 `SessionProvider` 渲染 `rightbar.session`；内容卸载时的报告释放轨道。独立的标题组件仅在会话界面可见时使用所选会话标题，以构建配置的产品标题或本地化 `common.brand.localBuild` 为回退值；语言变化会更新该回退值。主题呈现器是第二个 effect：从解析后的快照做纯 DOM 写入——初始状态经 getter 读取一次，此后仅事件驱动，不经过 React。它先应用调色板、字号、字体列表与 token 变量，再把渲染出的背景测量为唯一的颜色依据。全屏呈现禁用网格和手柄过渡；占用方完全覆盖框架后才报告新的列布局。退出全屏时，框架先保持无过渡并安装目标布局：关闭移除右轨道，恢复保留右轨道。后续普通几何操作恢复正常过渡。
@@ -92,7 +98,7 @@ Windows Electron 的 `data-windows-titlebar` 标记在所有列上方预留顶
 这些限制界定了当前布局行为。它们是当前包约束，不是通用窗口管理器对比或任务积压。
 
 - **面板几何是瞬时状态**——重新加载会恢复侧栏默认值并隐藏右侧面板；拖动设置的宽度是整个框架共用的一份偏好，而非每个会话各自的属性。
-- **极窄窗口**——右侧面板关闭后，中栏仍可能小于 400px；左侧 56px 控制栏仍会保留。
+- **极窄窗口**——右侧面板关闭后，中栏仍可能小于 400px；低于 768px 时，浏览器抽屉不占据侧栏宽度。
 - **轨道与面板仅在动画期间沿同一条曲线运动**——离散开合时框架设置 `data-animating`，其轨道过渡和占用方的滑入读取同一组时长与缓动变量；占用方若自用一套，挤压时面板边缘就会与会话界面的边缘脱开。拖拽和即时呈现切换不带过渡，因此该曲线不覆盖它们。
 - **挤压重排期间无滚动锚定**——布局变化可能移动读者的视口。
 
diff --git a/packages/client/ui-layout/package.json b/packages/client/ui-layout/package.json
index e3954c1b2e..b0205ffa78 100644
--- a/packages/client/ui-layout/package.json
+++ b/packages/client/ui-layout/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-layout",
   "description": "Shell plugin: three-column AppFrame with drag handles, ctx.layout viewing-state service (navigation + panels)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-layout/src/client/AppFrame.module.css b/packages/client/ui-layout/src/client/AppFrame.module.css
index 5b71ebecfd..fa1065dc56 100644
--- a/packages/client/ui-layout/src/client/AppFrame.module.css
+++ b/packages/client/ui-layout/src/client/AppFrame.module.css
@@ -3,11 +3,12 @@
   display: grid;
   grid-template-rows: minmax(0, 1fr) auto;
   height: 100%;
+  box-sizing: border-box;
   overflow: hidden;
   background: var(--dsw-alias-bg-base);
 }
 
-/* Only a discrete collapse/expand toggle eases the tracks (the TSX holds
+/* Only discrete collapse/expand and fold changes ease the tracks (the TSX holds
    data-animating across the toggle on the deepsuite sider curve). Steady-state
    tracks move only with the viewport, and those updates must land instantly:
    an eased track chases the live window edge and the centre column visibly
@@ -56,6 +57,8 @@
 }
 
 .sidebarCol {
+  grid-column: 1;
+  grid-row: 1;
   min-width: 0;
   overflow: hidden;
   background: var(--dsw-specific-sidebar-fill);
@@ -63,12 +66,22 @@
 }
 
 .centerCol {
+  grid-column: 2;
+  grid-row: 1;
   min-width: 0;
   display: flex;
   flex-direction: column;
   overflow: hidden;
 }
 
+.mainPanel {
+  display: flex;
+  flex-direction: column;
+  flex: 1;
+  min-width: 0;
+  min-height: 0;
+}
+
 /* macOS desktop: the frame goes transparent so window vibrancy reaches the
    sidebar column, which keeps only a translucent tint; the centre paints the
    base background itself to stay opaque. The sidebar/centre separator moves
@@ -107,7 +120,7 @@
   --dsh-frame-chrome-top: 0px;
 }
 
-:global([data-platform='darwin']) .sidebarCol {
+:global([data-platform='darwin']) .frame:not([data-sidebar-drawer]) .sidebarCol {
   /* A blue wash over the top of the translucent tint, gone by a third of the
      column; a faint blue-grey-violet rises through the bottom third; and a
      faint blue cast is mixed into the tint itself. Every layer stays
@@ -126,7 +139,7 @@
 
 /* Dark drops the blue cast (the light-mode wash reads purple over dark fills)
    and thins the fill so more wallpaper shows; the washes stay. */
-:global([data-platform='darwin']) :global([data-ds-dark-theme]) .sidebarCol {
+:global([data-platform='darwin']) :global([data-ds-dark-theme]) .frame:not([data-sidebar-drawer]) .sidebarCol {
   background:
     linear-gradient(
       to bottom,
@@ -143,8 +156,8 @@
    them with a 90%-opaque fill of the same token in both themes (the dark
    selector repeats so this outranks its thinner fill). */
 @media (prefers-reduced-transparency: reduce) {
-  :global([data-platform='darwin']) .sidebarCol,
-  :global([data-platform='darwin']) :global([data-ds-dark-theme]) .sidebarCol {
+  :global([data-platform='darwin']) .frame:not([data-sidebar-drawer]) .sidebarCol,
+  :global([data-platform='darwin']) :global([data-ds-dark-theme]) .frame:not([data-sidebar-drawer]) .sidebarCol {
     background: color-mix(in srgb, var(--dsw-specific-sidebar-fill) 90%, transparent);
   }
 }
@@ -265,11 +278,96 @@
  * where it is. The occupant draws its own left border.
  */
 .rightbarCol {
+  grid-column: 3;
+  grid-row: 1;
   position: relative;
   min-width: 0;
   overflow: visible;
 }
 
+.frame[data-sidebar-drawer] {
+  --dsh-frame-leading-clearance: 84px;
+  overflow: clip;
+}
+
+:global(html:not([data-platform])) .frame[data-sidebar-drawer] {
+  /* 12px seat offset + 28px opener + 8px gap; Desktop keeps room for two controls. */
+  --dsh-frame-leading-clearance: 48px;
+}
+
+.frame[data-sidebar-drawer] .mainPanel[data-global-panel] {
+  padding-top: max(0px, calc(48px - var(--dsh-frame-top-clearance, 0px)));
+}
+
+.frame[data-sidebar-drawer] .sidebarCol {
+  position: absolute;
+  grid-area: auto;
+  inset: 0 auto 0 0;
+  z-index: 71;
+  box-sizing: border-box;
+  border-right: none;
+  transform: translateX(0);
+  visibility: visible;
+  transition: transform var(--ds-transition-duration-slow) var(--ds-ease-in-out);
+}
+
+.frame[data-sidebar-drawer][data-sidebar-collapsed] .sidebarCol {
+  transform: translateX(-100%);
+  visibility: hidden;
+  transition:
+    transform var(--ds-transition-duration-slow) var(--ds-ease-in-out),
+    visibility 0s linear var(--ds-transition-duration-slow);
+}
+
+.frame[data-sidebar-drawer][data-sidebar-instant] .sidebarCol {
+  transition: none;
+}
+
+.drawerMask {
+  position: absolute;
+  inset: var(--dsh-frame-chrome-top, 0px) 0 0;
+  z-index: 70;
+  background: var(--dsw-alias-bg-mask-1);
+  backdrop-filter: var(--dsw-mask-blur);
+  opacity: 0;
+  pointer-events: none;
+  transition: opacity var(--ds-transition-duration-slow) var(--ds-ease-in-out);
+}
+
+.frame[data-sidebar-drawer]:not([data-sidebar-collapsed]) .drawerMask {
+  opacity: 1;
+  pointer-events: auto;
+}
+
+.frame[data-sidebar-drawer] .leadingSeat {
+  top: 11px;
+  left: 12px;
+}
+
+:global([data-platform='darwin']) .frame[data-sidebar-drawer] {
+  --dsh-frame-leading-clearance: 160px;
+}
+
+:global([data-platform='darwin']) .frame[data-sidebar-drawer] .leadingSeat {
+  left: 88px;
+}
+
+:global([data-platform='darwin'][data-fullscreen]) .frame[data-sidebar-drawer] {
+  --dsh-frame-leading-clearance: 84px;
+}
+
+:global([data-platform='darwin'][data-fullscreen]) .frame[data-sidebar-drawer] .leadingSeat {
+  left: 12px;
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .frame[data-sidebar-drawer] .sidebarCol,
+  .frame[data-sidebar-drawer][data-sidebar-collapsed] .sidebarCol,
+  .drawerMask {
+    transition: none;
+  }
+}
+
 .bottomRow {
   grid-column: 1 / -1;
   min-width: 0;
diff --git a/packages/client/ui-layout/src/client/AppFrame.tsx b/packages/client/ui-layout/src/client/AppFrame.tsx
index 5614947447..23e71c9c03 100644
--- a/packages/client/ui-layout/src/client/AppFrame.tsx
+++ b/packages/client/ui-layout/src/client/AppFrame.tsx
@@ -17,29 +17,37 @@
 import { useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from 'react'
 import type { ReactNode } from 'react'
 import type {
-  PropsLocale, PropsRenderSlots, PropsRuntime, PropsStore,
+  HostObservable, InjectFace, PropsLocale, PropsRenderSlots, PropsRuntime, PropsStore,
 } from '@deepseek-ai/dsh-client-ui-slots'
-import { CENTER_MIN, clampWidth, computeColumns, RIGHTBAR_DEFAULT_RATIO, RIGHTBAR_MAX_RATIO, RIGHTBAR_MIN, SIDEBAR_AUTO_COLLAPSE, SIDEBAR_COLLAPSED, SIDEBAR_DEFAULT } from './columns.ts'
+import { CENTER_MIN, clampWidth, computeColumns, RIGHTBAR_DEFAULT_RATIO, RIGHTBAR_MAX_RATIO, RIGHTBAR_MIN, SIDEBAR_AUTO_COLLAPSE, SIDEBAR_COLLAPSED, SIDEBAR_DEFAULT, SIDEBAR_DRAWER_BREAKPOINT } from './columns.ts'
 import { DocumentTitle } from './DocumentTitle.tsx'
 import type { createLayoutStore } from './stores.ts'
 import css from './AppFrame.module.css'
 
-/** Full composed props: runtime share + child-slot render share + store share. */
+/** Browser posture supplied by the root registration. */
+export interface AppFrameInjected {
+  hooks: { foldedLandscape: HostObservable<boolean> }
+}
+
+/** Full composed props: runtime, child slots, store, locale, and injected posture. */
 export type AppFrameProps =
   & PropsRuntime<'root'>
   & PropsRenderSlots<'sidebar' | 'main' | 'rightbar' | 'shell.bottom' | 'shell.overlay' | 'shell.leading'>
   & PropsStore<ReturnType<typeof createLayoutStore>>
   & PropsLocale<'common'>
+  & InjectFace<AppFrameInjected>
 
 /** Center column grid item (session-body building block). */
-function CenterColumn(props: { children?: ReactNode }) {
-  return <div className={css.centerCol}>{props.children}</div>
+function CenterColumn(props: { children?: ReactNode; inert: boolean }) {
+  return <div className={css.centerCol} {...{ inert: props.inert ? '' : undefined }}>{props.children}</div>
 }
 
 /** Subscribe to the main key without subscribing the column frame to each panel id. */
 function MainPanel({ usePanelInfo, renderSlot }: Pick<PropsRuntime<'root'>, 'usePanelInfo'> & PropsRenderSlots<'main'>) {
   const panelId = usePanelInfo(info => info.activePanelId)
-  return renderSlot('main', {}, { entryKey: panelId ?? 'conversation' })
+  return <div className={css.mainPanel} data-global-panel={panelId !== null || undefined}>
+    {renderSlot('main', {}, { entryKey: panelId ?? 'conversation' })}
+  </div>
 }
 
 /**
@@ -47,8 +55,8 @@ function MainPanel({ usePanelInfo, renderSlot }: Pick<PropsRuntime<'root'>, 'use
  * occupant's panel is positioned against the column's right edge, which never
  * moves, so it can hang over the centre when there is no track.
  */
-function RightbarColumn(props: { children?: ReactNode }) {
-  return <div className={css.rightbarCol} data-rightbar-col>{props.children}</div>
+function RightbarColumn(props: { children?: ReactNode; inert: boolean }) {
+  return <div className={css.rightbarCol} data-rightbar-col {...{ inert: props.inert ? '' : undefined }}>{props.children}</div>
 }
 
 /**
@@ -122,6 +130,7 @@ export function AppFrame({
   useStore,
   useSessions,
   usePanelInfo,
+  useFoldedLandscape,
   actions,
   renderSlot,
   t,
@@ -129,6 +138,7 @@ export function AppFrame({
   const layoutInfo = useStore(state => state.layoutInfo)
   const frameRef = useRef<HTMLDivElement | null>(null)
   const viewport = layoutInfo.viewportWidth
+  const foldedLandscape = useFoldedLandscape(matches => matches)
 
   // Track the frame's own box (not the window): rAF-throttled ResizeObserver.
   useLayoutEffect(() => {
@@ -158,7 +168,16 @@ export function AppFrame({
   }, [actions])
 
   const narrow = viewport < SIDEBAR_AUTO_COLLAPSE
+  const windowsTitlebar = document.documentElement.hasAttribute('data-windows-titlebar')
+  const drawer = viewport < SIDEBAR_DRAWER_BREAKPOINT && !windowsTitlebar
+  const centeredSidebar = foldedLandscape && viewport >= SIDEBAR_DRAWER_BREAKPOINT
   const sidebarCollapsed = narrow ? !layoutInfo.narrowExpanded : layoutInfo.sidebar === 0
+  const drawerOpen = drawer && !sidebarCollapsed
+  // Entering drawer mode from a collapsed rail hides the backing immediately.
+  const [sidebarTransition, setSidebarTransition] = useState({ drawer, collapsed: sidebarCollapsed, instant: true })
+  if (sidebarTransition.drawer !== drawer || sidebarTransition.collapsed !== sidebarCollapsed) {
+    setSidebarTransition({ drawer, collapsed: sidebarCollapsed, instant: drawer && sidebarCollapsed && sidebarTransition.collapsed })
+  }
   const sidebarPreference = sidebarCollapsed
     ? 0
     : layoutInfo.sidebar === 0 ? SIDEBAR_DEFAULT : layoutInfo.sidebar
@@ -166,12 +185,15 @@ export function AppFrame({
   // Desktop reopen controls occupy the frame's shell.leading seat (macOS) or
   // the Windows caption row; neither platform keeps an icon rail.
   const darwin = document.documentElement.dataset.platform === 'darwin'
-  const collapsedWidth = darwin
-    || document.documentElement.hasAttribute('data-windows-titlebar') ? 0 : SIDEBAR_COLLAPSED
+  const collapsedWidth = drawer || darwin || windowsTitlebar ? 0 : SIDEBAR_COLLAPSED
   // Opening on a narrow frame collapses the left sidebar. Eligibility must
   // include that space before the occupant's first shown report arrives.
-  const normal = computeColumns(viewport, !layoutInfo.rightbarShown && narrow ? 0 : sidebarPreference, rightbarPreference, collapsedWidth)
-  const cols = computeColumns(viewport, sidebarPreference, layoutInfo.rightbarTrack ? rightbarPreference : 0, collapsedWidth)
+  const normal = computeColumns(
+    viewport, !layoutInfo.rightbarShown && narrow ? 0 : sidebarPreference, rightbarPreference, collapsedWidth, centeredSidebar,
+  )
+  const cols = computeColumns(
+    viewport, drawer ? 0 : sidebarPreference, layoutInfo.rightbarTrack ? rightbarPreference : 0, collapsedWidth, centeredSidebar,
+  )
   const colsRef = useRef(cols)
   colsRef.current = cols
   const rightbarWidth = useRef(normal.rightbar)
@@ -185,8 +207,8 @@ export function AppFrame({
   // Track-level transitions pause for the whole gesture: eased tracks would
   // detach the column edge from the pointer (AppFrame.module.css).
   const [dragging, setDragging] = useState(false)
-  // Track easing is scoped to a discrete open/close toggle: data-animating
-  // goes up when the collapse state or the rightbar track flips and comes down
+  // Track easing is scoped to discrete open/close and fold changes: data-animating
+  // goes up when the sidebar presentation or the rightbar track flips and comes down
   // at transition end (timeout as the reduced-motion/covered-frame fallback).
   // Steady-state viewport updates stay instant (AppFrame.module.css), and so
   // does a toggle arriving together with a viewport change — that is the
@@ -194,15 +216,21 @@ export function AppFrame({
   // chase the live window edge. The counter restarts the settle window when a
   // re-toggle interrupts a running transition.
   const [animating, setAnimating] = useState(0)
-  const trackToggle = `${sidebarCollapsed}:${layoutInfo.rightbarTrack}`
+  const trackToggle = `${sidebarCollapsed}:${layoutInfo.rightbarTrack}:${centeredSidebar}`
   const previousToggle = useRef(trackToggle)
   const previousViewport = useRef(viewport)
+  // Arm the transition before child layout effects measure the new column widths.
+  const animateTracks = previousViewport.current === viewport && (animating > 0 || previousToggle.current !== trackToggle)
   useLayoutEffect(() => {
     const viewportChanged = previousViewport.current !== viewport
     previousViewport.current = viewport
+    if (viewportChanged) {
+      previousToggle.current = trackToggle
+      setAnimating(0)
+      return
+    }
     if (previousToggle.current === trackToggle) return
     previousToggle.current = trackToggle
-    if (viewportChanged) return
     setAnimating(token => token + 1)
   }, [trackToggle, viewport])
   useEffect(() => {
@@ -239,66 +267,74 @@ export function AppFrame({
   // whole and was corrected two frames later — visible jitter. cols keeps only
   // the discrete decisions (track present, collapse state) and the drag base.
   const rightbarMax = cols.rightbar === 0 ? 0 : clampWidth(rightbarPreference, RIGHTBAR_MIN, viewport * RIGHTBAR_MAX_RATIO)
+  const sidebarWidth = drawer
+    ? Math.min(layoutInfo.sidebar || SIDEBAR_DEFAULT, Math.max(0, viewport - 48))
+    : cols.sidebar
   const sidebar = useMemo(() => renderSlot('sidebar', {
     collapsed: sidebarCollapsed,
-    width: cols.sidebar,
-  }), [renderSlot, sidebarCollapsed, cols.sidebar])
+    width: sidebarWidth,
+    drawer,
+  }), [renderSlot, sidebarCollapsed, sidebarWidth, drawer])
   const main = useMemo(() => (
     <MainPanel usePanelInfo={usePanelInfo} renderSlot={renderSlot} />
   ), [usePanelInfo, renderSlot])
   const overlays = useMemo(() => renderSlot('shell.overlay', {}), [renderSlot])
-  // Window-chrome seat over the main panels' top-left corner: only a fully
-  // hidden sidebar column on macOS desktop leaves window chrome without a
-  // home — the Windows zero-width collapse keeps its controls in the caption
-  // row (ui-sidebar). AppFrame.module.css publishes the matching
-  // --dsh-frame-leading-clearance under the same collapsed condition.
+  // The leading seat serves drawers and fully hidden macOS sidebars.
+  // Windows native captions keep their controls in the caption row instead.
+  // AppFrame.module.css reserves clearance for the seat's rendered controls.
   const leading = useMemo(() => renderSlot('shell.leading', {}), [renderSlot])
-  const leadingMounted = darwin && sidebarCollapsed
+  const leadingMounted = drawer || darwin && sidebarCollapsed
 
   return (
     <div
       ref={frameRef}
       className={css.frame}
       style={{
-        ...(document.documentElement.hasAttribute('data-windows-titlebar')
+        ...(windowsTitlebar
           ? { '--dsh-windows-sidebar-width': `${cols.sidebar}px` } : {}),
         gridTemplateColumns:
           `${cols.sidebar}px minmax(${cols.rightbar === 0 ? 0 : CENTER_MIN}px, 1fr) minmax(0px, ${rightbarMax}px)`,
       }}
       data-sidebar-collapsed={sidebarCollapsed || undefined}
+      data-sidebar-drawer={drawer || undefined}
+      data-sidebar-instant={drawer && sidebarCollapsed && sidebarTransition.instant || undefined}
       data-rightbar-collapsed={cols.rightbar === 0 || undefined}
       data-rightbar-fullscreen={layoutInfo.rightbarFullscreen || undefined}
       data-rightbar-instant={layoutInfo.rightbarInstant || undefined}
       data-dragging={dragging || undefined}
-      data-animating={animating > 0 || undefined}
+      data-animating={animateTracks || undefined}
     >
       <DocumentTitle
         productTitle={productTitle}
         useSessions={useSessions}
         usePanelInfo={usePanelInfo}
       />
-      <div className={css.sidebarCol}>
+      {drawer && <div className={css.drawerMask} data-sidebar-mask aria-hidden="true"
+        onClick={drawerOpen ? () => { actions.toggleSidebar() } : undefined} />}
+      <div className={css.sidebarCol}
+        style={drawer ? { width: sidebarWidth } : undefined}
+        {...{ inert: drawer && sidebarCollapsed ? '' : undefined }}>
         {sidebar}
       </div>
       <>
-        <CenterColumn>{main}</CenterColumn>
-        <RightbarColumn>
+        <CenterColumn inert={drawerOpen}>{main}</CenterColumn>
+        <RightbarColumn inert={drawerOpen}>
           {renderSlot('rightbar', { width: normal.rightbar, viewportWidth: viewport, canShow: normal.rightbar > 0 })}
         </RightbarColumn>
       </>
-      <div className={css.bottomRow} data-shell-bottom>
+      <div className={css.bottomRow} data-shell-bottom {...{ inert: drawerOpen ? '' : undefined }}>
         {renderSlot('shell.bottom', {})}
       </div>
       <div className={css.overlayLayer} data-shell-overlay>
         {overlays}
       </div>
       {leadingMounted && (
-        <div className={css.leadingSeat} data-shell-leading>
+        <div className={css.leadingSeat} data-shell-leading {...{ inert: drawerOpen ? '' : undefined }}>
           {leading}
         </div>
       )}
       {/* The collapsed rail is fixed-width: no resize handle while closed. */}
-      {!sidebarCollapsed && <DragHandle side="sidebar" left={cols.sidebar} onStart={onSidebarStart} onDrag={onSidebarDrag} onEnd={onDragEnd} />}
+      {!drawer && !centeredSidebar && !sidebarCollapsed && <DragHandle side="sidebar" left={cols.sidebar} onStart={onSidebarStart} onDrag={onSidebarDrag} onEnd={onDragEnd} />}
       {layoutInfo.rightbarShown && !layoutInfo.rightbarFullscreen && normal.rightbar > 0 && (
         <DragHandle side="rightbar" left={viewport - normal.rightbar} onStart={onRightbarStart} onDrag={onRightbarDrag} onEnd={onDragEnd} />
       )}
diff --git a/packages/client/ui-layout/src/client/columns.ts b/packages/client/ui-layout/src/client/columns.ts
index b5ffd9f732..6e99e6f910 100644
--- a/packages/client/ui-layout/src/client/columns.ts
+++ b/packages/client/ui-layout/src/client/columns.ts
@@ -17,6 +17,8 @@ export const SIDEBAR_MAX = 420
 export const SIDEBAR_DEFAULT = 280
 /** Closed-sidebar rail: a 24px icon column between 16px horizontal paddings. */
 export const SIDEBAR_COLLAPSED = 56
+/** Frame width below which the sidebar overlays the main content without a rail. */
+export const SIDEBAR_DRAWER_BREAKPOINT = 768
 /** Viewport width below which the sidebar auto-collapses to the rail (deepsuite
  * LG breakpoint); a manual toggle below it re-expands over the squeezed center
  * (stores.ts narrowExpanded). */
@@ -46,11 +48,14 @@ export function clampWidth(px: number, min: number, max: number): number {
  * @param rightbar - requested right panel width in px (0 = no track).
  * @param collapsedWidth - track width of the closed sidebar; the default keeps
  *   the icon rail, 0 hides the column entirely (macOS desktop).
+ * @param centeredSidebar - place an expanded sidebar's edge at the frame midpoint.
  * @returns actual widths after shrinking or removing the right track; only
  *   without that track may the center fall below its minimum, down to zero.
  */
-export function computeColumns(viewport: number, sidebar: number, rightbar: number, collapsedWidth = SIDEBAR_COLLAPSED): Columns {
-  const s = sidebar === 0 ? collapsedWidth : clampWidth(sidebar, SIDEBAR_MIN, SIDEBAR_MAX)
+export function computeColumns(
+  viewport: number, sidebar: number, rightbar: number, collapsedWidth = SIDEBAR_COLLAPSED, centeredSidebar = false,
+): Columns {
+  const s = sidebar === 0 ? collapsedWidth : centeredSidebar ? viewport / 2 : clampWidth(sidebar, SIDEBAR_MIN, SIDEBAR_MAX)
   const available = viewport - s - CENTER_MIN
   const r = rightbar === 0 || available < RIGHTBAR_MIN
     ? 0
diff --git a/packages/client/ui-layout/src/client/index.ts b/packages/client/ui-layout/src/client/index.ts
index ee9da22d2b..aec243039c 100644
--- a/packages/client/ui-layout/src/client/index.ts
+++ b/packages/client/ui-layout/src/client/index.ts
@@ -15,6 +15,7 @@ import type {} from '@deepseek-ai/dsh-client-ui-theme/client'
 import type { HostObservable, SnapshotSelectorHook } from '@deepseek-ai/dsh-client-ui-slots'
 import type { PanelInfo } from './service.ts'
 import { AppFrame } from './AppFrame.tsx'
+import type { AppFrameInjected } from './AppFrame.tsx'
 import { createLayoutStore } from './stores.ts'
 import { LayoutController } from './service.ts'
 import type { ShortcutCommandId } from '@deepseek-ai/dsh-client-shortcuts/client'
@@ -62,8 +63,9 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
      * the seats it declares disappear with it. To add something to the
      * sidebar, register into one of those inner seats instead.
      *
-     * The occupant receives the frame's live column state (collapsed, width)
-     * and is expected to render the compact control rail while collapsed.
+     * The occupant receives the frame's collapsed state, width and drawer mode.
+     * Drawer content stays mounted while hidden; other browser columns retain
+     * a compact control rail while collapsed.
      */
     'sidebar': { kind: 'single'; scope: 'root'; owner: SidebarOwnerProps }
     /**
@@ -105,9 +107,9 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
     'shell.overlay': { kind: 'list'; scope: 'root' }
     /**
      * Window-chrome seat at the frame's top-left, over every main panel.
-     * Mounted only while the sidebar column is fully hidden (macOS desktop
-     * collapse; other platforms keep the rail), so the occupant can assume the
-     * frame edge is the window edge and the macOS traffic lights sit before it.
+     * Mounted for narrow drawers and collapsed macOS desktop sidebars. macOS
+     * traffic lights sit before it outside native fullscreen; browser controls
+     * start at the frame edge.
      * OCCUPIED by ui-sidebar's reopen/New Session controls.
      *
      * While the seat is mounted the frame publishes
@@ -127,10 +129,12 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
 
 /** Sidebar owner share: live column state from the frame's concession solve. */
 export interface SidebarOwnerProps {
-  /** True when the sidebar is closed (the column renders the compact control rail). */
+  /** True when closed; a drawer is hidden, while other browser columns retain a rail. */
   collapsed: boolean
-  /** Rendered column width in px (SIDEBAR_COLLAPSED when collapsed). */
+  /** Rendered sidebar width in px; a hidden drawer retains its expanded width. */
   width: number
+  /** Present the retained sidebar content as an overlay drawer. */
+  drawer: boolean
 }
 
 /** Right column owner share: resolved normal geometry and opening eligibility. */
@@ -160,6 +164,16 @@ export function apply(ctx: ClientContext): void {
   const t = ctx.locale.bind('shortcuts.layout')
 
   ctx.effect(() => {
+    // Headless profiles can instantiate client registrations without browser media APIs.
+    const query = typeof matchMedia === 'function'
+      ? matchMedia('(device-posture: folded) and (orientation: landscape)') : undefined
+    const foldedLandscape: HostObservable<boolean> = {
+      getSnapshot: () => query?.matches ?? false,
+      subscribe: (listener) => {
+        query?.addEventListener('change', listener)
+        return () => { query?.removeEventListener('change', listener) }
+      },
+    }
     const handle = createLayoutStore()
     const instance = handle.create()
     const store: typeof handle = { ...handle, create: () => instance }
@@ -187,6 +201,7 @@ export function apply(ctx: ClientContext): void {
         'shell.leading': { kind: 'single', scope: 'root' },
       },
       store,
+      inject: (): AppFrameInjected => ({ hooks: { foldedLandscape } }),
     }, AppFrame)
     const disposeShortcut = ctx.shortcuts.register({
       id: 'sidebar.left.toggle' as ShortcutCommandId, label: () => t('toggle'), aliases: ['sidebar', 'toggle left sidebar'],
@@ -197,8 +212,10 @@ export function apply(ctx: ClientContext): void {
         'web:macos': { code: 'KeyB', modifiers: ['primary', 'alt'] },
         'web:windows': { code: 'KeyB', modifiers: ['primary', 'alt'] },
       },
-      regions: ['page', 'editable'], modals: [],
-      resolve: () => ({ status: 'handled', run: () => { layout.toggleSidebar() } }),
+      regions: ['page', 'editable'], modals: ['sidebar'],
+      resolve: ({ modal }) => modal !== null && modal !== 'sidebar'
+        ? { status: 'pass' }
+        : { status: 'handled', run: () => { layout.toggleSidebar() } },
     })
     const disposePanels = ctx.slots.subscribe('main', retainMainPanels)
     retainMainPanels()
diff --git a/packages/client/ui-layout/src/client/stores.ts b/packages/client/ui-layout/src/client/stores.ts
index 3a53caf4f1..264006bb45 100644
--- a/packages/client/ui-layout/src/client/stores.ts
+++ b/packages/client/ui-layout/src/client/stores.ts
@@ -6,7 +6,7 @@ import { defineStore, type EngineStoreHandle } from '@deepseek-ai/dsh-client-sto
 import type { MainPanelId } from './service.ts'
 import {
   clampWidth, RIGHTBAR_DEFAULT_RATIO, RIGHTBAR_MAX_RATIO, RIGHTBAR_MIN,
-  SIDEBAR_AUTO_COLLAPSE, SIDEBAR_DEFAULT, SIDEBAR_MAX, SIDEBAR_MIN,
+  SIDEBAR_AUTO_COLLAPSE, SIDEBAR_DEFAULT, SIDEBAR_DRAWER_BREAKPOINT, SIDEBAR_MAX, SIDEBAR_MIN,
 } from './columns.ts'
 
 /**
@@ -93,6 +93,7 @@ export function createLayoutStore(): EngineStoreHandle<LayoutState, LayoutAction
     actions: {
       selectPanel: (d, panelId: MainPanelId | null) => {
         d.panelInfo.activePanelId = panelId
+        if (d.layoutInfo.viewportWidth < SIDEBAR_DRAWER_BREAKPOINT) d.layoutInfo.narrowExpanded = false
       },
       retainMainPanels: (d, panelIds: readonly string[]) => {
         if (d.panelInfo.activePanelId !== null && !panelIds.includes(d.panelInfo.activePanelId)) {
@@ -115,7 +116,8 @@ export function createLayoutStore(): EngineStoreHandle<LayoutState, LayoutAction
       setViewportWidth: (d, width: number) => {
         if (d.layoutInfo.viewportWidth === width) return
         d.layoutInfo.rightbarInstant = false
-        if ((d.layoutInfo.viewportWidth < SIDEBAR_AUTO_COLLAPSE) !== (width < SIDEBAR_AUTO_COLLAPSE)) {
+        if ((d.layoutInfo.viewportWidth < SIDEBAR_AUTO_COLLAPSE) !== (width < SIDEBAR_AUTO_COLLAPSE)
+          || (d.layoutInfo.viewportWidth < SIDEBAR_DRAWER_BREAKPOINT) !== (width < SIDEBAR_DRAWER_BREAKPOINT)) {
           d.layoutInfo.narrowExpanded = false
         }
         d.layoutInfo.viewportWidth = width
diff --git a/packages/client/ui-layout/tests/app-frame.client.spec.tsx b/packages/client/ui-layout/tests/app-frame.client.spec.tsx
index 1dc7cc85b8..8aff85d326 100644
--- a/packages/client/ui-layout/tests/app-frame.client.spec.tsx
+++ b/packages/client/ui-layout/tests/app-frame.client.spec.tsx
@@ -1,9 +1,11 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /** Frame interactions with a real store and explicitly driven browser measurements. */
 import type { GlobalStandardProps, RenderOpts } from '@deepseek-ai/dsh-client-ui-slots'
 import { allowAllAccess, bindSnapshotSelector } from '@deepseek-ai/dsh-client-test-runtime'
+import { createSnapshotStore, type SnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
-import { act, cleanup, render } from '@testing-library/react'
+import { act, cleanup, fireEvent, render } from '@testing-library/react'
 import { AppFrame } from '../src/client/AppFrame.tsx'
 import type { AppFrameProps } from '../src/client/AppFrame.tsx'
 import type { MainPanelId, RightbarOwnerProps, SidebarOwnerProps } from '../src/client/index.ts'
@@ -33,6 +35,7 @@ let frameWidth: number
 let animationFrames: Map<number, FrameRequestCallback>
 let nextFrame: number
 let originalTitle: string
+let foldedLandscape: SnapshotStore<boolean>
 const restoreProperties: (() => void)[] = []
 
 function replaceProperty<T extends object, K extends keyof T>(target: T, key: K, value: T[K]): void {
@@ -60,13 +63,13 @@ function resize(width: number): void {
   })
 }
 
-function mountFrame(windowWidth = frameWidth) {
+function mountFrame(windowWidth = frameWidth, content?: AppFrameProps['renderSlot']) {
   vi.stubGlobal('innerWidth', windowWidth)
   const instance = createLayoutStore().create()
   const slotCalls: { key: string; props: object; options: RenderOpts | undefined }[] = []
   const renderSlot: AppFrameProps['renderSlot'] = (key, owner, options) => {
     slotCalls.push({ key, props: owner, options })
-    return <div data-testid={`${key}-content`} data-entry-key={options?.entryKey} />
+    return content?.(key, owner, options) ?? <div data-testid={`${key}-content`} data-entry-key={options?.entryKey} />
   }
   const useSessions: AppFrameProps['useSessions'] = sel => sel({
     ids: selectedSession === undefined ? [] : [selectedSession],
@@ -95,9 +98,10 @@ function mountFrame(windowWidth = frameWidth) {
       renderSlot={renderSlot}
       useSessions={useSessions}
       usePanelInfo={usePanelInfo}
+      useFoldedLandscape={bindSnapshotSelector(foldedLandscape)}
       useSessionStatus={useSessionStatus}
       useSessionRetainInfo={() => undefined}
-      useResource={useResource}
+      useContextMenu={contextMenuHook()} useResource={useResource}
       useWorkspaces={sel => sel(workspaceState)}
       {...allowAllAccess}
       t={key => key === 'brand.localBuild' ? 'DSH Local Build' : key}
@@ -152,6 +156,8 @@ beforeEach(() => {
   nextFrame = 1
   vi.stubEnv('DSH_CLIENT_TITLE', undefined)
   vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+  foldedLandscape = createSnapshotStore(false)
+  vi.stubGlobal('matchMedia', () => ({ matches: false }))
   vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) => {
     const id = nextFrame++
     animationFrames.set(id, callback)
@@ -205,7 +211,7 @@ describe('AppFrame', () => {
   it('renders owner props for the default sidebar and prospective right panel', () => {
     const { frame, rightOwner, sidebarOwner, slotCalls } = mountFrame()
     expect(tracks(frame)).toEqual([280, 0])
-    expect(sidebarOwner()).toEqual({ collapsed: false, width: 280 })
+    expect(sidebarOwner()).toEqual({ collapsed: false, width: 280, drawer: false })
     expect(rightOwner()).toEqual({ width: 864, viewportWidth: 1920, canShow: true })
     expect(slotCalls.find(c => c.key === 'main')).toEqual({ key: 'main', props: {}, options: { entryKey: 'conversation' } })
   })
@@ -227,14 +233,16 @@ describe('AppFrame', () => {
     expect(getByTestId('rightbar-content')).toBeTruthy()
   })
 
-  it('keeps Windows caption controls mounted with a zero-width collapsed column', () => {
+  it.each([1920, 390])('keeps Windows caption controls mounted at %ipx with a zero-width collapsed column', (width) => {
     document.documentElement.setAttribute('data-windows-titlebar', '')
     try {
       const { frame, instance, sidebarOwner, getByTestId, queryByTestId } = mountFrame()
-      act(() => { instance.actions.toggleSidebar() })
+      if (width < 1024) resize(width)
+      else act(() => { instance.actions.toggleSidebar() })
       expect(tracks(frame)[0]).toBe(0)
-      expect(sidebarOwner()).toMatchObject({ collapsed: true, width: 0 })
+      expect(sidebarOwner()).toMatchObject({ collapsed: true, width: 0, drawer: false })
       expect(getByTestId('sidebar-content')).toBeTruthy()
+      expect(getByTestId('sidebar-content').closest('[inert]')).toBeNull()
       // The caption row keeps the reopen controls; the darwin-only
       // shell.leading seat must not mount a duplicate set.
       expect(queryByTestId('shell.leading-content')).toBeNull()
@@ -247,7 +255,7 @@ describe('AppFrame', () => {
     const { frame, instance, sidebarOwner, getByTestId, queryByTestId } = mountFrame()
     act(() => { instance.actions.toggleSidebar() })
     expect(tracks(frame)).toEqual([56, 0])
-    expect(sidebarOwner()).toEqual({ collapsed: true, width: 56 })
+    expect(sidebarOwner()).toEqual({ collapsed: true, width: 56, drawer: false })
     expect(getByTestId('sidebar-content')).toBeTruthy()
     expect(frame.querySelector('[data-side="sidebar"]')).toBeNull()
     // The rail keeps the window chrome housed: no shell.leading seat.
@@ -264,7 +272,7 @@ describe('AppFrame', () => {
     expect(queryByTestId('shell.leading-content')).toBeNull()
     act(() => { instance.actions.toggleSidebar() })
     expect(tracks(frame)).toEqual([0, 0])
-    expect(sidebarOwner()).toEqual({ collapsed: true, width: 0 })
+    expect(sidebarOwner()).toEqual({ collapsed: true, width: 0, drawer: false })
     expect(frame.querySelector('[data-shell-leading]')).not.toBeNull()
     expect(queryByTestId('shell.leading-content')).toBeTruthy()
     act(() => { instance.actions.toggleSidebar() })
@@ -291,6 +299,37 @@ describe('AppFrame', () => {
 })
 
 describe('AppFrame normal width concessions', () => {
+  it('centers the sidebar while folded in landscape and restores its width without remounting', () => {
+    frameWidth = 951
+    const { frame, instance, sidebarOwner, getByTestId, unmount } = mountFrame()
+    act(() => { instance.actions.setSidebar(360); instance.actions.toggleSidebar() })
+    const sidebar = getByTestId('sidebar-content')
+    expect(tracks(frame)[0]).toBe(360)
+    fireEvent.transitionEnd(frame, { propertyName: 'grid-template-columns' })
+    act(() => { foldedLandscape.set(true) })
+    expect(tracks(frame)).toEqual([475.5, 0])
+    expect(frame.dataset.animating).toBe('true')
+    expect(sidebarOwner()).toEqual({ collapsed: false, width: 475.5, drawer: false })
+    expect(frame.querySelector('[data-side="sidebar"]')).toBeNull()
+    expect(getByTestId('sidebar-content')).toBe(sidebar)
+    act(() => { instance.actions.toggleSidebar() })
+    expect(tracks(frame)[0]).toBe(56)
+    resize(767)
+    expect(frame.dataset.animating).toBeUndefined()
+    act(() => { instance.actions.toggleSidebar() })
+    expect(sidebarOwner()).toEqual({ collapsed: false, width: 360, drawer: true })
+    resize(951)
+    act(() => { instance.actions.toggleSidebar() })
+    expect(tracks(frame)[0]).toBe(475.5)
+    fireEvent.transitionEnd(frame, { propertyName: 'grid-template-columns' })
+    act(() => { foldedLandscape.set(false) })
+    expect(tracks(frame)[0]).toBe(360)
+    expect(frame.dataset.animating).toBe('true')
+    expect(frame.querySelector('[data-side="sidebar"]')).not.toBeNull()
+    expect(instance.getSnapshot().layoutInfo.sidebar).toBe(360)
+    unmount()
+  })
+
   it('measures the frame, not the window, before choosing the first-open preference', () => {
     frameWidth = 1000
     const { instance, rightOwner } = mountFrame(1920)
@@ -319,7 +358,7 @@ describe('AppFrame normal width concessions', () => {
     expect(instance.getSnapshot().layoutInfo).toMatchObject({ rightbarShown: true, rightbar: 864 })
     act(() => { instance.actions.closeRightbar() })
     resize(455)
-    expect(tracks(frame)).toEqual([56, 0])
+    expect(tracks(frame)).toEqual([0, 0])
     resize(1920)
     expect(tracks(frame)).toEqual([420, 0])
   })
@@ -336,7 +375,7 @@ describe('AppFrame normal width concessions', () => {
     expect(rightOwner().canShow).toBe(true)
   })
 
-  it.each([[756, 300, true], [755, 0, false]] as const)('reports eligibility at %ipx', (width, rightbar, canShow) => {
+  it.each([[768, 312, true], [767, 345, true], [700, 300, true], [699, 0, false]] as const)('reports eligibility at %ipx', (width, rightbar, canShow) => {
     frameWidth = width
     const { instance, rightOwner } = mountFrame()
     act(() => { instance.actions.toggleSidebar() })
@@ -450,6 +489,30 @@ describe('AppFrame right panel presentation', () => {
     expect(frame.dataset.animating).toBe('true')
   })
 
+  it('skips drawer entry motion from a collapsed rail while retaining explicit toggle motion', () => {
+    const { frame, instance } = mountFrame()
+    resize(768)
+    expect(frame.dataset.sidebarInstant).toBeUndefined()
+    resize(767)
+    expect(frame.dataset.sidebarInstant).toBe('true')
+    resize(766)
+    expect(frame.dataset.sidebarInstant).toBe('true')
+    act(() => { instance.actions.toggleSidebar() })
+    expect(frame.dataset.sidebarInstant).toBeUndefined()
+    act(() => { instance.actions.toggleSidebar() })
+    expect(frame.dataset.sidebarInstant).toBeUndefined()
+    resize(768)
+    resize(767)
+    expect(frame.dataset.sidebarInstant).toBe('true')
+  })
+
+  it('retains drawer entry motion when resizing an expanded sidebar', () => {
+    const { frame } = mountFrame()
+    resize(767)
+    expect(frame.dataset.sidebarCollapsed).toBe('true')
+    expect(frame.dataset.sidebarInstant).toBeUndefined()
+  })
+
   it('animates the rightbar track flip and settles by timeout without a transition end', () => {
     vi.useFakeTimers()
     try {
@@ -506,11 +569,11 @@ describe('AppFrame right panel presentation', () => {
   })
 
   it('retains fullscreen without a track when normal columns cannot fit', () => {
-    frameWidth = 700
+    frameWidth = 699
     const { frame, instance, rightOwner } = mountFrame()
     act(() => { instance.actions.openRightbar(false, true) })
-    expect(tracks(frame)).toEqual([56, 0])
-    expect(rightOwner()).toEqual({ width: 0, viewportWidth: 700, canShow: false })
+    expect(tracks(frame)).toEqual([0, 0])
+    expect(rightOwner()).toEqual({ width: 0, viewportWidth: 699, canShow: false })
     expect(instance.getSnapshot().layoutInfo.rightbarShown).toBe(true)
     expect(frame.querySelector('[data-side="rightbar"]')).toBeNull()
   })
@@ -679,3 +742,58 @@ describe('AppFrame frame measurement lifecycle', () => {
     expect(animationFrames.size).toBe(0)
   })
 })
+
+describe('sidebar drawer', () => {
+  it('cancels an unfinished drawer toggle animation at the rail breakpoint', () => {
+    frameWidth = 390
+    const { frame, instance } = mountFrame()
+    act(() => { instance.actions.toggleSidebar() })
+    expect(frame.hasAttribute('data-animating')).toBe(true)
+    resize(768)
+    expect(frame.hasAttribute('data-animating')).toBe(false)
+  })
+
+  it('keeps the main content at full width while opening and closing the retained drawer', () => {
+    frameWidth = 390
+    const { frame, instance, sidebarOwner, getByTestId } = mountFrame()
+    const sidebar = getByTestId('sidebar-content')
+    const main = getByTestId('main-content')
+    const leading = getByTestId('shell.leading-content')
+    expect(tracks(frame)).toEqual([0, 0])
+    expect(sidebarOwner()).toEqual({ collapsed: true, width: 280, drawer: true })
+    expect(sidebar.parentElement?.hasAttribute('inert')).toBe(true)
+    const mask = frame.querySelector('[data-sidebar-mask]')
+    expect(mask).not.toBeNull()
+    fireEvent.click(mask!)
+    expect(sidebarOwner().collapsed).toBe(true)
+    act(() => { instance.actions.toggleSidebar() })
+    expect(tracks(frame)).toEqual([0, 0])
+    expect(sidebarOwner().collapsed).toBe(false)
+    expect(sidebar.parentElement?.hasAttribute('inert')).toBe(false)
+    expect(main.closest('[inert]')).not.toBeNull()
+    expect(leading.closest('[inert]')).not.toBeNull()
+    expect(frame.querySelector('[data-side="sidebar"]')).toBeNull()
+    fireEvent.click(frame.querySelector('[aria-hidden="true"]')!)
+    expect(sidebarOwner().collapsed).toBe(true)
+    expect(main.closest('[inert]')).toBeNull()
+    expect(getByTestId('sidebar-content')).toBe(sidebar)
+    expect(getByTestId('main-content')).toBe(main)
+    expect(getByTestId('shell.leading-content')).toBe(leading)
+    expect(frame.querySelector('[data-sidebar-mask]')).toBe(mask)
+  })
+
+  it('closes the drawer on navigation and restores the rail at 768px', () => {
+    frameWidth = 767
+    const { frame, instance, sidebarOwner } = mountFrame()
+    act(() => { instance.actions.toggleSidebar() })
+    act(() => { instance.actions.selectPanel('plugins' as MainPanelId) })
+    expect(sidebarOwner().collapsed).toBe(true)
+    act(() => { instance.actions.toggleSidebar() })
+    resize(768)
+    expect(sidebarOwner()).toEqual({ collapsed: true, width: 56, drawer: false })
+    expect(tracks(frame)).toEqual([56, 0])
+    resize(767)
+    expect(sidebarOwner().collapsed).toBe(true)
+    expect(tracks(frame)).toEqual([0, 0])
+  })
+})
diff --git a/packages/client/ui-layout/tests/apply.client.spec.ts b/packages/client/ui-layout/tests/apply.client.spec.ts
index 96aac84fd1..7ab8585886 100644
--- a/packages/client/ui-layout/tests/apply.client.spec.ts
+++ b/packages/client/ui-layout/tests/apply.client.spec.ts
@@ -6,13 +6,14 @@ import { Context, type Fiber } from '@deepseek-ai/cordis'
 import { stubConfigForm } from '@deepseek-ai/dsh-client-test-runtime'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { SlotRegistry } from '@deepseek-ai/dsh-client-ui-renderer/client'
-import type { SlotRendererHost } from '@deepseek-ai/dsh-client-ui-slots'
+import type { HostObservable, SlotRendererHost } from '@deepseek-ai/dsh-client-ui-slots'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
 import { apply as themeApply, inject as themeInject, ThemeRuntime } from '@deepseek-ai/dsh-client-ui-theme/client'
 import { apply, inject, LayoutController } from '@deepseek-ai/dsh-client-ui-layout/client'
 import { apply as nodeApply } from '@deepseek-ai/dsh-client-ui-layout'
 import type { MainPanelId } from '../src/client/service.ts'
 import type { createLayoutStore } from '../src/client/stores.ts'
+import { ShortcutRegistry } from '../../shortcuts/src/client/registry.ts'
 
 const owners = new Set<Fiber>()
 let originalRootStyle: string | null
@@ -93,12 +94,35 @@ describe('ui-layout client apply', () => {
     expect(slots.spec('shell.leading')).toEqual({ kind: 'single', scope: 'root' })
   })
 
+  it('keeps Desktop sidebar shortcuts behind a foreground modal', async () => {
+    const { ctx, slots } = await bench()
+    const shortcuts = ctx.get('shortcuts')
+    if (shortcuts === undefined) throw new Error('shortcuts service is unavailable')
+    const register = vi.spyOn(shortcuts, 'register')
+    await ctx.plugin({ inject: [...inject], apply }).await()
+    const command = register.mock.calls.find(([entry]) => entry.id === 'sidebar.left.toggle')?.[0]
+    if (command === undefined) throw new Error('sidebar shortcut was not registered')
+    const registry = new ShortcutRegistry('desktop', 'macos')
+    registry.register(command)
+    const handle = slots.entries('root')[0]!.store as ReturnType<typeof createLayoutStore>
+    const width = () => handle.create().getSnapshot().layoutInfo.sidebar
+    const gesture = { code: 'KeyB', meta: true, control: false, alt: false, shift: false,
+      repeat: false, composing: false, defaultPrevented: false }
+    const context = { region: 'editable' as const, target: null, modal: 'settings' }
+    expect(registry.dispatch(gesture, context, vi.fn()).status).toBe('pass')
+    expect(width()).toBe(280)
+    expect(registry.dispatch(gesture, { ...context, modal: null }, vi.fn()).status).toBe('handled')
+    expect(width()).toBe(0)
+    expect(registry.dispatch(gesture, { ...context, modal: 'sidebar' }, vi.fn()).status).toBe('handled')
+    expect(width()).toBe(280)
+  })
+
   it('shares a pre-created instance between service actions, root rendering, and panelInfo', async () => {
     const { ctx, slots, rendererHost } = await bench()
     const fiber = ctx.plugin({ inject: [...inject], apply })
     await fiber.await()
     const entry = slots.entries('root')[0]!
-    expect(entry.inject).toBeUndefined()
+    expect(entry.inject).toBeTypeOf('function')
     const handle = entry.store as ReturnType<typeof createLayoutStore>
     const instance = handle.create()
     expect(handle.create()).toBe(instance)
@@ -149,6 +173,47 @@ describe('ui-layout client apply', () => {
     expect(document.body.hasAttribute('data-ds-dark-theme')).toBe(false)
   })
 
+  it('injects one live folded-landscape source and releases each subscription', async () => {
+    const query = Object.assign(new EventTarget(), { matches: true })
+    vi.stubGlobal('matchMedia', (media: string) => media === '(device-posture: folded) and (orientation: landscape)'
+      ? query : Object.assign(new EventTarget(), { matches: false }))
+    const { ctx, slots } = await bench()
+    const fiber = ctx.plugin({ inject: [...inject], apply })
+    await fiber.await()
+    const entry = slots.entries('root')[0]
+    if (entry?.inject === undefined) throw new Error('the root entry must inject its media source')
+    const first = entry.inject() as { hooks: { foldedLandscape: HostObservable<boolean> } }
+    const second = entry.inject() as typeof first
+    const source = first.hooks.foldedLandscape
+    expect(second.hooks.foldedLandscape).toBe(source)
+    expect(source.getSnapshot()).toBe(true)
+    const listener = vi.fn()
+    const unsubscribe = source.subscribe(listener)
+    try {
+      query.matches = false
+      query.dispatchEvent(new Event('change'))
+      expect(source.getSnapshot()).toBe(false)
+      expect(listener).toHaveBeenCalledOnce()
+    } finally { unsubscribe() }
+    query.matches = true
+    query.dispatchEvent(new Event('change'))
+    expect(listener).toHaveBeenCalledOnce()
+  })
+
+  it('provides ordinary layout when the client tree starts without browser media queries', async () => {
+    vi.stubGlobal('matchMedia', undefined)
+    const { ctx, slots } = await bench()
+    const fiber = ctx.plugin({ inject: [...inject], apply })
+    await fiber.await()
+    const entry = slots.entries('root')[0]
+    if (entry?.inject === undefined) throw new Error('the root entry must inject its media source')
+    const source = (entry.inject() as { hooks: { foldedLandscape: HostObservable<boolean> } }).hooks.foldedLandscape
+    expect(source.getSnapshot()).toBe(false)
+    const listener = vi.fn()
+    source.subscribe(listener)()
+    expect(listener).not.toHaveBeenCalled()
+  })
+
   it('teardown unwinds the service, the root registration, and the child declarations', async () => {
     const { ctx, slots, rendererHost } = await bench()
     const fiber = ctx.plugin({ inject: [...inject], apply })
diff --git a/packages/client/ui-layout/tests/columns.client.spec.ts b/packages/client/ui-layout/tests/columns.client.spec.ts
index 4278516f0e..98aed13230 100644
--- a/packages/client/ui-layout/tests/columns.client.spec.ts
+++ b/packages/client/ui-layout/tests/columns.client.spec.ts
@@ -18,6 +18,11 @@ describe('computeColumns', () => {
     expect(computeColumns(1920, 0, 0)).toEqual({ sidebar: 56, center: 1864, rightbar: 0 })
   })
 
+  it('aligns an expanded sidebar to the fold midpoint without widening a collapsed rail', () => {
+    expect(computeColumns(951, 280, 864, 56, true)).toEqual({ sidebar: 475.5, center: 475.5, rightbar: 0 })
+    expect(computeColumns(951, 0, 0, 56, true)).toEqual({ sidebar: 56, center: 895, rightbar: 0 })
+  })
+
   it('clamps sidebar preferences and limits the right panel to 70% of the frame', () => {
     expect(computeColumns(3000, 9999, 9999)).toEqual({ sidebar: 420, center: 480, rightbar: 2100 })
     expect(computeColumns(1920, 1, 1)).toEqual({ sidebar: 264, center: 1356, rightbar: 300 })
diff --git a/packages/client/ui-layout/tests/layout-store.client.spec.ts b/packages/client/ui-layout/tests/layout-store.client.spec.ts
index edf2a5a3c9..a2e5226568 100644
--- a/packages/client/ui-layout/tests/layout-store.client.spec.ts
+++ b/packages/client/ui-layout/tests/layout-store.client.spec.ts
@@ -290,3 +290,21 @@ describe('right panel instant geometry', () => {
     expect(store.getSnapshot().layoutInfo).toMatchObject({ rightbarShown: true, rightbarFullscreen: fullscreen, rightbarInstant: false })
   })
 })
+
+describe('drawer navigation', () => {
+  it.each(['plugins' as MainPanelId, null])('closes the narrow drawer on navigation to %s', (panel) => {
+    const { store, actions } = createLayoutStore().create()
+    actions.setViewportWidth(390)
+    actions.toggleSidebar()
+    actions.selectPanel(panel)
+    expect(store.getSnapshot().layoutInfo.narrowExpanded).toBe(false)
+  })
+
+  it('keeps a tablet sidebar open when navigating', () => {
+    const { store, actions } = createLayoutStore().create()
+    actions.setViewportWidth(768)
+    actions.toggleSidebar()
+    actions.selectPanel(null)
+    expect(store.getSnapshot().layoutInfo.narrowExpanded).toBe(true)
+  })
+})
diff --git a/packages/client/ui-layout/tsconfig.json b/packages/client/ui-layout/tsconfig.json
index b2daaaf054..ae8dfb07f6 100644
--- a/packages/client/ui-layout/tsconfig.json
+++ b/packages/client/ui-layout/tsconfig.json
@@ -23,9 +23,6 @@
     {
       "path": "../ui-theme/tsconfig.client.json"
     },
-    {
-      "path": "../ui-primitives"
-    },
     {
       "path": "../store"
     },
diff --git a/packages/client/ui-message-feedback/package.json b/packages/client/ui-message-feedback/package.json
index 0c9241d24c..b785d7c3da 100644
--- a/packages/client/ui-message-feedback/package.json
+++ b/packages/client/ui-message-feedback/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-message-feedback",
   "description": "The Web feedback surface: per-message Like/Dislike in the assistant-message action strip and the feedback dialog behind both ratings and /feedback, backed by the messageFeedback and sessionFeedback Host Remotes",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-model-selection/package.json b/packages/client/ui-model-selection/package.json
index 4942d2ac40..fda2972fd2 100644
--- a/packages/client/ui-model-selection/package.json
+++ b/packages/client/ui-model-selection/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-model-selection",
   "description": "Model selection over the shared model catalog, Session projection, and session.selectModel",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-open-in-app/README.i18n.yaml b/packages/client/ui-open-in-app/README.i18n.yaml
index ea5f40f785..028691d184 100644
--- a/packages/client/ui-open-in-app/README.i18n.yaml
+++ b/packages/client/ui-open-in-app/README.i18n.yaml
@@ -18,8 +18,8 @@
   en: 056e2bd9e3c78dd8
   zh: be35d2ba53be0442
 /deepseek-ai-dsh-client-ui-open-in-app/use-this-package/what-to-expect:
-  en: 940e8891c458dee1
-  zh: 8fd2fcee25065b23
+  en: 6f3934925cfda953
+  zh: 9e3126bce73cf344
 /deepseek-ai-dsh-client-ui-open-in-app/understand-the-implementation:
   en: ec7a7c56aaeafce6
   zh: 4cee0cd2cb7531df
diff --git a/packages/client/ui-open-in-app/README.md b/packages/client/ui-open-in-app/README.md
index 0ba07f3edf..95d7be4a70 100644
--- a/packages/client/ui-open-in-app/README.md
+++ b/packages/client/ui-open-in-app/README.md
@@ -39,6 +39,12 @@ File menus list the discovered associated applications without a separate “Ope
 
 Mounted controls with the same association reader and file share one query and its results; opening either menu refreshes all of them. Releasing the last control cancels the query and discards its state. Cancelled queries cannot replace another file’s results. A failed query displays a menu message and leaves reveal available as the default action. File-association discovery follows [native-command](../../util/native-command/README.md); an empty result, including a platform without a discovery adapter, uses the same reveal fallback without platform branches in the control.
 
+Workspace context menus open the captured folder through the same directory application catalog as the Session header. File-tree directories expose native reveal and Copy folder path; they do not offer file preview or save.
+
+Context menus contribute file preview, native application opening, original-file reveal, and URL navigation and copying through [ui-context-menu](../ui-context-menu/README.md). Session reveal follows the installed file-manager catalog and registers a structured Session contribution at order 500, between Copy session ID and Archive. Native context-menu operations share the feature's overlay toast and mobile/desktop feedback policy after dismissal. Native file actions resolve Session paths through authorized metadata before querying applications. Missing files disable path actions; image reveal requires an actual Host file and always targets that original. [ui-file-actions](../ui-file-actions/README.md) owns copy, download, save-as, and their completion feedback, including revealing the saved destination from its toast.
+
+File menus copy absolute paths without line numbers; URL copying preserves query and fragment. Image files also expose image copy and original download, alongside the existing file actions. Successful downloads and saves show the shared Toast; picker cancellation is silent.
+
 -----
 
 <a id="understand-the-implementation"></a>
diff --git a/packages/client/ui-open-in-app/README.zh.md b/packages/client/ui-open-in-app/README.zh.md
index ac2371c621..775efac9d8 100644
--- a/packages/client/ui-open-in-app/README.zh.md
+++ b/packages/client/ui-open-in-app/README.zh.md
@@ -39,6 +39,12 @@ kind: "package-reference"
 
 使用同一查询函数和文件的已挂载控件共用查询与结果，打开任一菜单会刷新所有相关控件。最后一个控件释放后取消查询并清除状态。已取消的查询不会覆盖其他文件的结果。查询失败时菜单显示提示，并以文件定位作为默认动作。文件关联查询的平台支持范围见 [native-command](../../util/native-command/README.zh.md)；查询结果为空时，包括平台尚无查询适配器的情况，控件统一使用定位动作，不按操作系统分支处理。
 
+工作区右键菜单通过与会话标题相同的目录应用列表打开被点击的文件夹。文件树目录提供本机显示位置和复制文件夹路径，不提供文件预览或保存。
+
+右键菜单通过 [ui-context-menu](../ui-context-menu/README.zh.md) 贡献文件预览、原生应用打开、原文件定位以及链接导航与复制。会话定位沿用已安装文件管理器目录，以顺序 500 注册为结构化 Session 贡献，位于复制 Session ID 与归档之间。右键原生操作在菜单关闭后，通过本功能的浮层 toast 沿用移动端与电脑端反馈规则。原生文件操作先通过授权元数据解析会话路径，再查询关联应用。文件不存在时禁用路径操作；图片定位要求实际 Host 文件，并始终针对该原文件。[ui-file-actions](../ui-file-actions/README.zh.md) 负责复制、下载、另存为及其完成提示，包括通过提示中的操作定位保存目标。
+
+文件菜单复制不含行号的绝对路径；网址复制保留查询参数与锚点。图片文件在既有文件操作之外，还提供复制图片与下载原图。下载和保存成功后显示共享 Toast，取消选择器时不提示。
+
 -----
 
 <a id="understand-the-implementation"></a>
diff --git a/packages/client/ui-open-in-app/package.json b/packages/client/ui-open-in-app/package.json
index ecae68e5cd..6d7778f135 100644
--- a/packages/client/ui-open-in-app/package.json
+++ b/packages/client/ui-open-in-app/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-open-in-app",
   "description": "Web \"Open In...\" controls: the Session-header split button opening the workspace directory in an installed application, and the document preview's default-application controls for one file",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -49,7 +49,11 @@
         "@deepseek-ai/dsh-client-ui-layout",
         "@deepseek-ai/dsh-client-ui-renderer",
         "@deepseek-ai/dsh-client-ui-session",
-        "@deepseek-ai/dsh-client-ui-sidebar-documentpreview"
+        "@deepseek-ai/dsh-client-ui-sidebar-documentpreview",
+        "@deepseek-ai/dsh-client-ui-context-menu",
+        "@deepseek-ai/dsh-client-ui-sidebar-right",
+        "@deepseek-ai/dsh-api-workspace-files",
+        "@deepseek-ai/dsh-client-ui-workspace"
       ],
       "platform": "web"
     }
@@ -78,6 +82,13 @@
     "react": "^18.2.0",
     "@deepseek-ai/dsh-client-ui-deliverables": "workspace:*",
     "@deepseek-ai/dsh-native-command": "workspace:*",
-    "@deepseek-ai/dsh-client-shortcuts": "workspace:*"
+    "@deepseek-ai/dsh-client-shortcuts": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-file-actions": "workspace:*",
+    "@deepseek-ai/dsh-util-workspace-path": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-sidebar-right": "workspace:*",
+    "@deepseek-ai/dsh-api-workspace-files": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-sidebar-browser": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-workspace": "workspace:*"
   }
 }
diff --git a/packages/client/ui-open-in-app/src/client/context-menus.tsx b/packages/client/ui-open-in-app/src/client/context-menus.tsx
new file mode 100644
index 0000000000..efaac77594
--- /dev/null
+++ b/packages/client/ui-open-in-app/src/client/context-menus.tsx
@@ -0,0 +1,143 @@
+/** Native path and URL menu contributions, independent of their trigger components. */
+import { IconRightUpOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+import type { Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
+import type {} from '@deepseek-ai/dsh-client-ui-workspace/client'
+import type {} from '@deepseek-ai/dsh-client-ui-sidebar-right/client'
+import type {} from '@deepseek-ai/dsh-api-workspace-files/remote'
+import type {} from '@deepseek-ai/dsh-client-ui-sidebar-browser/client'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type { OpenInAppController } from './controller.ts'
+import { fileAddressFor, resolveWorkspacePath } from '@deepseek-ai/dsh-util-workspace-path'
+import type { OpenInAppPathController } from './open-path.ts'
+import type { OpenInAppKey } from './locales.ts'
+import type { OpenInAppToastSource } from './open-toast.tsx'
+
+/**
+ * Register native opening, original-path reveal, and URL actions.
+ * @param ctx - declared plugin dependencies.
+ * @param paths - existing native file actions.
+ * @param t - localized action labels.
+ * @param directories - installed directory applications.
+ * @param report - native operation feedback shared with the application controls.
+ */
+export function registerContextMenus(
+  ctx: Context,
+  paths: OpenInAppPathController,
+  t: (key: OpenInAppKey, values?: Record<string, string>) => string,
+  directories: OpenInAppController,
+  report: OpenInAppToastSource['report'],
+): void {
+  const fileManager = () => t(directories.apps.getSnapshot()?.includes('finder') ? 'menu.finder' : 'menu.reveal')
+  const open = async (path: string, action: 'open' | 'reveal', application?: string): Promise<void> => {
+    report(await paths.openPath(path, action, application))
+  }
+  const resolvePath = async (sessionId: SessionId, path: string, signal: AbortSignal): Promise<string | undefined> => {
+    try {
+      const result = await ctx.remote.workspaceFiles.stat(sessionId, path, signal)
+      return result.ok ? result.value.absolutePath : undefined
+    }
+    catch (_error) {
+      // An unavailable metadata carrier disables path actions; URL and clipboard actions remain independent.
+      signal.throwIfAborted()
+      return undefined
+    }
+  }
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'open-in-app.workspace', target: 'workspace', order: 200,
+    resolve: async ({ path }, signal) => {
+      await directories.load()
+      signal.throwIfAborted()
+      const manager = directories.apps.getSnapshot()?.find(id => ['finder', 'explorer', 'filemanager'].includes(id))
+      return [{ id: 'reveal', icon: { key: 'open-in-app.reveal' }, label: fileManager(), disabled: manager === undefined,
+        failureLabel: t('path.revealError'),
+        ...manager === undefined ? {} : { run: async () => {
+          const outcome = await directories.launch(manager, path)
+          report(outcome.kind === 'failed' ? { kind: 'failed', failure: 'revealError' } : outcome)
+        } } }]
+    },
+  }), 'open-in-app: Workspace context menu')
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'open-in-app.directory', target: 'directory', order: 100,
+    resolve: async ({ sessionId, path }, signal) => {
+      await paths.load()
+      const cwd = ctx.sessions.list.getSnapshot().byId[sessionId]?.cwd
+      const absolutePath = resolveWorkspacePath(cwd, path)
+      signal.throwIfAborted()
+      return [
+        { id: 'reveal', icon: { key: 'open-in-app.reveal' }, label: fileManager(), disabled: paths.desktop.getSnapshot() !== true,
+          run: () => open(absolutePath, 'reveal') },
+        { id: 'copyPath', icon: { key: 'open-in-app.copy' }, label: t('menu.copyDirectoryPath'), failureLabel: t('menu.copyFailed'), run: async () => {
+          await navigator.clipboard.writeText(absolutePath)
+          ctx.contextMenus.notify(t('menu.copied'), true)
+        } },
+      ]
+    },
+  }), 'open-in-app: directory context menu')
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'open-in-app.file', target: 'file', order: 100,
+    resolve: async (target, signal) => {
+      const { sessionId, path, line, paneId } = target
+      await paths.load()
+      const absolutePath = await resolvePath(sessionId, path, signal)
+      const available = absolutePath !== undefined
+      const desktop = paths.desktop.getSnapshot() === true && available
+      const apps = desktop ? await paths.applications(absolutePath, signal) : []
+      signal.throwIfAborted()
+      const application = apps?.find(app => app.default)
+      return [
+        { id: 'sidebar', icon: { key: 'open-in-app.sidebar' }, label: t('menu.sidebar'), disabled: !available,
+          run: () => {
+            const cwd = ctx.sessions.list.getSnapshot().byId[sessionId]?.cwd
+            ctx.sidebarRight.openResourceIn(sessionId, fileAddressFor(sessionId, cwd, path), {
+              ...(paneId === undefined ? {} : { paneId }), ...(line === undefined ? {} : { params: { line } }),
+            })
+          } },
+        { id: 'reveal', icon: { key: 'open-in-app.reveal' }, label: fileManager(), disabled: !desktop,
+          ...absolutePath === undefined ? {} : { run: () => open(absolutePath, 'reveal') } },
+        { id: 'open', label: application ? t('open.title', { app: application.name }) : t('menu.defaultApp'),
+          icon: { key: 'open-in-app.application', ...application?.icon ? { src: application.icon } : {} },
+          disabled: application === undefined,
+          ...absolutePath === undefined || application === undefined ? {} : { run: () => open(absolutePath, 'open', application.id) } },
+        { id: 'copyPath', icon: { key: 'open-in-app.copy' }, failureLabel: t('menu.copyFailed'), label: t('menu.copyPath'),
+          run: async () => {
+            const cwd = ctx.sessions.list.getSnapshot().byId[sessionId]?.cwd
+            await navigator.clipboard.writeText(absolutePath ?? resolveWorkspacePath(cwd, path))
+            ctx.contextMenus.notify(t('menu.copied'), true)
+          } },
+      ]
+    },
+  }), 'open-in-app: file context menu')
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'open-in-app.url', target: 'url', order: 100,
+    resolve: ({ sessionId, url }) => [
+      { id: 'sidebar', icon: { key: 'open-in-app.sidebar' }, label: t('menu.sidebar'), disabled: ctx.sidebarRightTabs.get('browser') === undefined,
+        run: () => { ctx.sidebarRight.openTabIn(sessionId, 'browser', { params: { url } }) } },
+      { id: 'external', label: t('menu.external'),
+        run: () => { window.open(url, '_blank', 'noopener,noreferrer') } },
+      { id: 'copy', icon: { key: 'open-in-app.copy' }, failureLabel: t('menu.copyFailed'), label: t('menu.copyLink'), run: async () => {
+        await navigator.clipboard.writeText(url); ctx.contextMenus.notify(t('menu.copied'), true)
+      } },
+    ],
+  }), 'open-in-app: URL context menu')
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'open-in-app.image', target: 'image', order: 200,
+    resolve: async (target, signal) => {
+      const { sessionId, path } = target
+      await paths.load()
+      const local = path !== undefined && sessionId !== undefined && paths.desktop.getSnapshot() === true
+        ? await resolvePath(sessionId, path, signal) : undefined
+      signal.throwIfAborted()
+      return [
+        { id: 'reveal', icon: { key: 'open-in-app.reveal' }, label: fileManager(), disabled: local === undefined,
+          ...local !== undefined ? { run: () => open(local, 'reveal') } : {} },
+      ]
+    },
+  }), 'open-in-app: image context menu')
+}
+
+/** @param props - icon metadata captured with the resolved action. @returns Application image or the native-open glyph. */
+export function ContextMenuApplicationIcon({ icon }: Pick<PropsRuntime<'contextMenu.icon'>, 'icon'>) {
+  return icon.src ? <img src={icon.src} width={14} height={14} alt="" /> : <IconRightUpOutlineRegular />
+}
diff --git a/packages/client/ui-open-in-app/src/client/index.ts b/packages/client/ui-open-in-app/src/client/index.ts
index a661daedca..05ac1202ed 100644
--- a/packages/client/ui-open-in-app/src/client/index.ts
+++ b/packages/client/ui-open-in-app/src/client/index.ts
@@ -1,3 +1,6 @@
+import { IconFolderOpenOutlineRegular, IconCopyOutlineRegular, IconPanelLeftOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
+import { ContextMenuApplicationIcon, registerContextMenus } from './context-menus.tsx'
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /**
  * Shared native opening controls for workspace directories, document previews,
  * delivery cards, and changed-file review. Directory choices persist in the browser;
@@ -20,6 +23,7 @@ import type {} from '@deepseek-ai/dsh-api-remotes/client'
 import type {} from '@deepseek-ai/dsh-api-session-controller/remote'
 import { OPEN_IN_APP_ICON_PREFIX_ROUTE } from '@deepseek-ai/dsh-host-open-in-app/shared'
 import { OpenInAppController } from './controller.ts'
+import { registerSessionReveal } from './session-reveal.tsx'
 import { OpenInAppAction, type OpenInAppActionInjected, type OpenInAppActionProps } from './OpenInAppAction.tsx'
 import { OpenInAppPathController } from './open-path.ts'
 import { OpenPathAction, type OpenPathInjected } from './OpenPathAction.tsx'
@@ -43,7 +47,7 @@ export type { OpenPathActionProps, OpenPathInjected } from './OpenPathAction.tsx
 export type { OpenPathEmptyActionProps } from './OpenPathEmptyAction.tsx'
 
 /** Required services: sessions, layout selection, the slot registry, copy, Remote calls, and shortcuts. */
-export const inject = ['sessions', 'slots', 'locale', 'remote', 'remote.session', 'shortcuts', 'layout']
+export const inject = ['contextMenus', 'sidebarRight', 'sidebarRightTabs', 'sessions', 'slots', 'locale', 'remote', 'remote.session', 'remote.workspaceFiles', 'shortcuts', 'layout']
 
 /**
  * Client plugin body: register dictionaries, workspace directory controls, and
@@ -58,6 +62,15 @@ export function apply(ctx: ClientContext): void {
   const t = ctx.locale.bind(NS)
   // Keep operation feedback visible after its initiating panel closes.
   const announcement = createOpenInAppToastSource()
+  ctx.slots.inject('contextMenu.icon', function* () {
+    for (const [key, Icon] of Object.entries({
+      'open-in-app.reveal': IconFolderOpenOutlineRegular, 'open-in-app.copy': IconCopyOutlineRegular,
+      'open-in-app.sidebar': IconPanelLeftOutlineRegular,
+    })) yield ctx.slots.register({ name: 'contextMenu.icon', key }, Icon)
+    yield ctx.slots.register({ name: 'contextMenu.icon', key: 'open-in-app.application' }, ContextMenuApplicationIcon)
+  })
+  registerContextMenus(ctx, paths, t, controller, announcement.report)
+  registerSessionReveal(ctx, controller, t, announcement.report)
   ctx.slots.inject('shell.overlay', () => ctx.slots.register({
     name: 'shell.overlay', id: 'open-in-app.toast', locale: NS,
     inject: () => ({ hooks: announcement.hooks, dismiss: announcement.dismiss }),
diff --git a/packages/client/ui-open-in-app/src/client/locales.ts b/packages/client/ui-open-in-app/src/client/locales.ts
index 95497e6b96..039e8cbbb5 100644
--- a/packages/client/ui-open-in-app/src/client/locales.ts
+++ b/packages/client/ui-open-in-app/src/client/locales.ts
@@ -39,6 +39,17 @@ const PRODUCT_NAMES = {
 
 /** Simplified Chinese dictionary (the key-set source of truth). */
 export const zh = {
+  'menu.sidebar': '在侧边栏打开',
+  'menu.finder': '在 Finder 中显示',
+  'menu.reveal': '在文件夹显示',
+  'menu.defaultApp': '使用默认应用打开',
+  'menu.external': '外部浏览器打开',
+  'menu.copyLink': '复制链接地址',
+  'menu.copyPath': '复制文件路径',
+  'menu.copyDirectoryPath': '复制文件夹路径',
+  'menu.copied': '已复制',
+  'menu.copyFailed': '无法复制，请检查内容是否可用后重试',
+
   'open.title': '用 {app} 打开',
   'path.appDefault': '{app}（默认）',
   'path.appsError': '无法获取应用列表',
@@ -61,6 +72,17 @@ export const zh = {
 
 /** English dictionary, key-identical to the Chinese source of truth. */
 export const en: Record<OpenInAppKey, string> = {
+  'menu.sidebar': 'Open in sidebar',
+  'menu.finder': 'Show in Finder',
+  'menu.reveal': 'Show in folder',
+  'menu.defaultApp': 'Open in default application',
+  'menu.external': 'Open in external browser',
+  'menu.copyLink': 'Copy link address',
+  'menu.copyPath': 'Copy file path',
+  'menu.copyDirectoryPath': 'Copy folder path',
+  'menu.copied': 'Copied',
+  'menu.copyFailed': 'Could not copy. Check that the content is available, then retry.',
+
   'open.title': 'Open in {app}',
   'path.appDefault': '{app} (default)',
   'path.appsError': 'Could not load applications',
@@ -86,6 +108,17 @@ export type OpenInAppKey = keyof typeof zh
 
 /** Japanese copy, checked against the English keys. */
 export const ja = {
+  'menu.sidebar': 'サイドバーで開く',
+  'menu.finder': 'Finder に表示',
+  'menu.reveal': 'フォルダーに表示',
+  'menu.defaultApp': '既定のアプリで開く',
+  'menu.external': '外部ブラウザーで開く',
+  'menu.copyLink': 'リンクアドレスをコピー',
+  'menu.copyPath': 'ファイルパスをコピー',
+  'menu.copyDirectoryPath': 'フォルダーパスをコピー',
+  'menu.copied': 'コピーしました',
+  'menu.copyFailed': 'コピーできません。内容を確認して再試行してください。',
+
   ...PRODUCT_NAMES,
   'open.title': '{app}で開く',
   'path.appDefault': '{app}（デフォルト）',
@@ -108,6 +141,16 @@ export const ja = {
 
 /** Spanish dictionary, checked against the English keys. */
 export const es = {
+  'menu.sidebar': 'Abrir en la barra lateral',
+  'menu.finder': 'Mostrar en Finder',
+  'menu.reveal': 'Mostrar en la carpeta',
+  'menu.defaultApp': 'Abrir en la aplicación predeterminada',
+  'menu.external': 'Abrir en un navegador externo',
+  'menu.copyLink': 'Copiar dirección del enlace',
+  'menu.copyPath': 'Copiar ruta del archivo',
+  'menu.copyDirectoryPath': 'Copiar ruta de la carpeta',
+  'menu.copied': 'Copiado',
+  'menu.copyFailed': 'No se pudo copiar. Compruebe que el contenido esté disponible e inténtelo de nuevo.',
   'open.title': 'Abrir en {app}',
   'path.appDefault': '{app} (predeterminado)',
   'path.appsError': 'No se pudieron cargar aplicaciones',
@@ -130,6 +173,16 @@ export const es = {
 
 /** French dictionary, checked against the English keys. */
 export const fr = {
+  'menu.sidebar': 'Ouvrir dans la barre latérale',
+  'menu.finder': 'Afficher dans le Finder',
+  'menu.reveal': 'Afficher dans le dossier',
+  'menu.defaultApp': 'Ouvrir dans l’application par défaut',
+  'menu.external': 'Ouvrir dans un navigateur externe',
+  'menu.copyLink': 'Copier l’adresse du lien',
+  'menu.copyPath': 'Copier le chemin du fichier',
+  'menu.copyDirectoryPath': 'Copier le chemin du dossier',
+  'menu.copied': 'Copié',
+  'menu.copyFailed': 'Impossible de copier. Vérifiez que le contenu est disponible, puis réessayez.',
   'open.title': 'Ouvrir dans {app}',
   'path.appDefault': '{app} (par défaut)',
   'path.appsError': 'Impossible de charger les applications',
@@ -152,6 +205,16 @@ export const fr = {
 
 /** German dictionary, checked against the English keys. */
 export const de = {
+  'menu.sidebar': 'In der Seitenleiste öffnen',
+  'menu.finder': 'Im Finder anzeigen',
+  'menu.reveal': 'Im Ordner anzeigen',
+  'menu.defaultApp': 'In der Standardanwendung öffnen',
+  'menu.external': 'In einem externen Browser öffnen',
+  'menu.copyLink': 'Linkadresse kopieren',
+  'menu.copyPath': 'Dateipfad kopieren',
+  'menu.copyDirectoryPath': 'Ordnerpfad kopieren',
+  'menu.copied': 'Kopiert',
+  'menu.copyFailed': 'Kopieren fehlgeschlagen. Prüfen Sie, ob der Inhalt verfügbar ist, und versuchen Sie es erneut.',
   'open.title': 'In {app} öffnen',
   'path.appDefault': '{app} (Standard)',
   'path.appsError': 'Anwendungen konnten nicht geladen werden',
@@ -174,6 +237,16 @@ export const de = {
 
 /** Russian dictionary, checked against the English keys. */
 export const ru = {
+  'menu.sidebar': 'Открыть на боковой панели',
+  'menu.finder': 'Показать в Finder',
+  'menu.reveal': 'Показать в папке',
+  'menu.defaultApp': 'Открыть в приложении по умолчанию',
+  'menu.external': 'Открыть во внешнем браузере',
+  'menu.copyLink': 'Копировать адрес ссылки',
+  'menu.copyPath': 'Копировать путь к файлу',
+  'menu.copyDirectoryPath': 'Копировать путь к папке',
+  'menu.copied': 'Скопировано',
+  'menu.copyFailed': 'Не удалось скопировать. Проверьте доступность содержимого и повторите попытку.',
   'open.title': 'Открыть в {app}',
   'path.appDefault': '{app} (по умолчанию)',
   'path.appsError': 'Не удалось загрузить приложения',
@@ -196,6 +269,16 @@ export const ru = {
 
 /** Portuguese dictionary, checked against the English keys. */
 export const pt = {
+  'menu.sidebar': 'Abrir na barra lateral',
+  'menu.finder': 'Mostrar no Finder',
+  'menu.reveal': 'Mostrar na pasta',
+  'menu.defaultApp': 'Abrir no aplicativo padrão',
+  'menu.external': 'Abrir em um navegador externo',
+  'menu.copyLink': 'Copiar endereço do link',
+  'menu.copyPath': 'Copiar caminho do arquivo',
+  'menu.copyDirectoryPath': 'Copiar caminho da pasta',
+  'menu.copied': 'Copiado',
+  'menu.copyFailed': 'Não foi possível copiar. Verifique se o conteúdo está disponível e tente novamente.',
   'open.title': 'Abrir em {app}',
   'path.appDefault': '{app} (padrão)',
   'path.appsError': 'Não foi possível carregar aplicativos',
diff --git a/packages/client/ui-open-in-app/src/client/session-reveal.tsx b/packages/client/ui-open-in-app/src/client/session-reveal.tsx
new file mode 100644
index 0000000000..0dcf0c3a86
--- /dev/null
+++ b/packages/client/ui-open-in-app/src/client/session-reveal.tsx
@@ -0,0 +1,37 @@
+/** Native directory reveal contributed to the captured Session's structured menu. */
+import type { Context } from '@deepseek-ai/cordis'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { OpenInAppController } from './controller.ts'
+import type { OpenInAppToastSource } from './open-toast.tsx'
+
+/**
+ * Share directory availability and launch feedback with the existing application controls.
+ * @param ctx - owning plugin context.
+ * @param controller - directory application catalog and launcher.
+ * @param t - localized action and failure labels.
+ * @param report - native operation feedback shared with the application controls.
+ */
+export function registerSessionReveal(
+  ctx: Context,
+  controller: OpenInAppController,
+  t: PropsLocale<'open-in-app'>['t'],
+  report: OpenInAppToastSource['report'],
+): void {
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'open-in-app.reveal', target: 'session', order: 500,
+    observe: () => [controller.apps, ctx.sessions.list, ctx.locale],
+    resolve: ({ sessionId }) => {
+      const directory = ctx.sessions.list.getSnapshot().byId[sessionId]?.cwd
+      const applications = controller.apps.getSnapshot()
+      const manager = applications?.find(id => ['finder', 'explorer', 'filemanager'].includes(id))
+      return [{
+        id: 'reveal', label: t(applications?.includes('finder') ? 'menu.finder' : 'menu.reveal'), icon: { key: 'open-in-app.reveal' },
+        disabled: !directory || manager === undefined, failureLabel: t('path.revealError'),
+        ...(directory && manager !== undefined ? { run: async () => {
+          const outcome = await controller.launch(manager, directory)
+          report(outcome.kind === 'failed' ? { kind: 'failed', failure: 'revealError' } : outcome)
+        } } : {}),
+      }]
+    },
+  }), 'open-in-app: Session directory menu')
+}
diff --git a/packages/client/ui-open-in-app/tests/browser-plugin.client.spec.ts b/packages/client/ui-open-in-app/tests/browser-plugin.client.spec.ts
index 6bd3cf0642..f0a9c00b90 100644
--- a/packages/client/ui-open-in-app/tests/browser-plugin.client.spec.ts
+++ b/packages/client/ui-open-in-app/tests/browser-plugin.client.spec.ts
@@ -26,8 +26,10 @@ import { apply as nodeApply } from '../src/index.ts'
 import { OpenInAppAction } from '../src/client/OpenInAppAction.tsx'
 import { OpenPathAction } from '../src/client/OpenPathAction.tsx'
 import { OpenPathEmptyAction } from '../src/client/OpenPathEmptyAction.tsx'
+import { MenuRegistry } from '@deepseek-ai/dsh-client-ui-context-menu/src/client/registry.ts'
 import type { OpenTargetReporter } from '../src/client/OpenTargetButton.tsx'
 import { FileRouteAction } from '../src/client/FileRouteAction.tsx'
+import { ContextMenuApplicationIcon } from '../src/client/context-menus.tsx'
 import type { OpenInAppOutcome } from '../src/client/outcome.ts'
 import { OpenInAppToast, type OpenInAppToastProps, type OpenInAppToastSource } from '../src/client/open-toast.tsx'
 import { en, NS, zh } from '../src/client/locales.ts'
@@ -61,6 +63,7 @@ async function bench() {
   ctx.slots.register({
     name: 'root',
     children: {
+      'sidebar.workspaces.session.menu.item': { kind: 'list', scope: 'root' },
       'conversation.session.header.utilities': { kind: 'list', scope: 'session' },
       'sidebar.right.tab.files.actions': { kind: 'list', scope: 'session' },
       'sidebar.right.tab.document.actions': { kind: 'list', scope: 'session' },
@@ -68,6 +71,7 @@ async function bench() {
       'deliverables.file.actions': { kind: 'list', scope: 'session' },
       'deliverables.review.file.actions': { kind: 'list', scope: 'session' },
       'shell.overlay': { kind: 'list', scope: 'root' },
+      'contextMenu.icon': { kind: 'keyed', scope: 'root', inline: true },
     },
   } as never, () => null)
   const list = createSnapshotStore<SessionListState>({ ids: [], byId: {}, phase: 'ready', projectionsBySession: {} })
@@ -77,15 +81,23 @@ async function bench() {
     getSnapshot: () => layoutStore.getSnapshot().panelInfo,
     subscribe: listener => layoutStore.subscribe(listener),
   })
+  const notify = vi.fn()
+  const menus = new MenuRegistry(notify)
+  ctx.effect(() => () => { menus.dispose() })
+  ctx.provide('contextMenus', { register: menus.register.bind(menus), resolve: menus.resolve.bind(menus), open: vi.fn(), notify } as never)
   ctx.provide('layout', layout)
   ctx.provide('sessions', { list })
   ctx.provide('shortcuts', { register: (command: ShortcutCommand) => { commands.set(command.id, command); return () => { commands.delete(command.id) } }, catalog: createSnapshotStore([]) })
   ctx.provide('locale', new LocaleRuntime(ctx))
   ctx.provide('remote', remote as never)
+  ctx.provide('fileActions', {} as never)
+  ctx.provide('sidebarRight', {} as never)
+  ctx.provide('sidebarRightTabs', {} as never)
+  ctx.provide('remote.workspaceFiles', {} as never)
   ctx.provide('remote.session', remote.session as never)
   const fiber = ctx.plugin({ inject: [...inject], apply })
   await fiber.await()
-  return { ctx, fiber, list, commands, layout }
+  return { ctx, fiber, list, commands, layout, notify }
 }
 
 function headerEntryIds(ctx: Context): (string | undefined)[] {
@@ -103,13 +115,57 @@ function toastSource(ctx: Context): Omit<OpenInAppToastSource, 'report'> {
 }
 
 describe('open-in-app browser half', () => {
+  it('renders captured application images and the default glyph without an image URL', () => {
+    const view = render(createElement(ContextMenuApplicationIcon, { icon: { key: 'open-in-app.application', src: '/captured.png' } }))
+    expect(view.container.querySelector('img')?.getAttribute('src')).toBe('/captured.png')
+    view.rerender(createElement(ContextMenuApplicationIcon, { icon: { key: 'open-in-app.application' } }))
+    expect(view.container.querySelector('img')).toBeNull()
+    expect(view.container.querySelector('svg')).not.toBeNull()
+  })
+  it.each([
+    [false, true], [true, true], [false, false], [true, false],
+  ])('shares native feedback after Session menu dismissal (mobile=%s, success=%s)', async (mobile, success) => {
+    vi.mocked(isMobileDevice).mockReturnValue(mobile)
+    const fetcher = vi.fn(async (input: string | URL) => String(input) === 'open-in-app/apps'
+      ? new Response(JSON.stringify({ apps: ['finder'] })) : new Response('', { status: success ? 200 : 502 }))
+    vi.stubGlobal('fetch', fetcher)
+    const { ctx, fiber, list, notify } = await bench()
+    const id = 'captured' as SessionId
+    list.set({ ...list.getSnapshot(), ids: [id], byId: {
+      [id]: { id, displayTitle: 'Captured', cwd: '/captured', running: false, blank: false, updatedAt: 0, retainedBy: {} },
+    } })
+    const menu = ctx.contextMenus.resolve({ kind: 'session', value: { sessionId: id, displayTitle: 'Captured' } })
+    const toast = toastSource(ctx)
+    try {
+      expect(ctx.slots.entries('contextMenu.icon').map(entry => entry.options.key)).toEqual([
+        'open-in-app.reveal', 'open-in-app.copy', 'open-in-app.sidebar', 'open-in-app.application',
+      ])
+      expect(ctx.slots.entries('sidebar.workspaces.session.menu.item')).toHaveLength(0)
+      await vi.waitFor(() => { expect(menu.source.getSnapshot()[0]).toMatchObject({ label: 'Show in Finder', disabled: false }) })
+      menu.select('open-in-app.reveal/reveal')
+      menu.dispose()
+      const face: Partial<OpenInAppActionInjected> = ctx.slots.entries('conversation.session.header.utilities')[0]!.inject!()
+      await vi.waitFor(() => { expect(face.hooks?.openInAppLaunch.getSnapshot().phase).toBe(success ? 'idle' : 'error') })
+      expect(toast.hooks.toast.getSnapshot()).toEqual(success
+        ? mobile ? { kind: 'opened', seq: 1 } : null
+        : { kind: 'failed', failure: 'revealError', seq: 1 })
+      expect(notify).not.toHaveBeenCalled()
+      expect(fetcher).toHaveBeenCalledWith('open-in-app/open', expect.objectContaining({
+        body: JSON.stringify({ app: 'finder', path: '/captured' }),
+      }))
+    } finally { menu.dispose(); await fiber.dispose() }
+    expect(ctx.slots.entries('contextMenu.icon')).toEqual([])
+    const removed = ctx.contextMenus.resolve({ kind: 'session', value: { sessionId: id, displayTitle: 'Captured' } })
+    expect(removed.source.getSnapshot()).toEqual([])
+    removed.dispose()
+  })
   it('refuses absent workspaces and reports failed keyboard launches to the app-wide toast', async () => {
     vi.stubGlobal('fetch', vi.fn(async (input: string | URL) => String(input) === 'open-in-app/apps'
       ? new Response(JSON.stringify({ apps: ['finder'] })) : new Response('failed', { status: 500 })))
     const { ctx, fiber, list, commands } = await bench()
     try {
       const command = commands.get('workspace.openLocal')!
-      expect(typeof command.label === 'function' ? command.label() : command.label).toBe(en['open.tooltip'])
+      expect(command.label()).toBe(en['open.tooltip'])
       const context = { region: 'page', modal: null, target: null } as const
       expect(command.resolve(context).status).toBe('blocked')
       const id = 'main' as SessionId
@@ -211,7 +267,7 @@ describe('open-in-app browser half', () => {
   })
 
   it('declares the services it binds', () => {
-    expect(inject).toEqual(['sessions', 'slots', 'locale', 'remote', 'remote.session', 'shortcuts', 'layout'])
+    expect(inject).toEqual(['contextMenus', 'sidebarRight', 'sidebarRightTabs', 'sessions', 'slots', 'locale', 'remote', 'remote.session', 'remote.workspaceFiles', 'shortcuts', 'layout'])
   })
 
   it('does not open a retained workspace while a global panel hides the Session header', async () => {
diff --git a/packages/client/ui-open-in-app/tests/context-menu-actions.client.spec.ts b/packages/client/ui-open-in-app/tests/context-menu-actions.client.spec.ts
new file mode 100644
index 0000000000..2f7c64a44d
--- /dev/null
+++ b/packages/client/ui-open-in-app/tests/context-menu-actions.client.spec.ts
@@ -0,0 +1,253 @@
+// @vitest-environment jsdom
+/** Original-byte actions and feedback survive the menu that initiated them. */
+import { Blob as NodeBlob } from 'node:buffer'
+import { Context } from '@deepseek-ai/cordis'
+import { afterEach, expect, it, onTestFinished, vi } from 'vitest'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { SessionId } from '@deepseek-ai/dsh-session'
+import { MenuRegistry } from '@deepseek-ai/dsh-client-ui-context-menu/src/client/registry.ts'
+import type { ContextMenus, ContextMenuTarget } from '@deepseek-ai/dsh-client-ui-context-menu/client'
+import type { FileActionSource, FileSaveResult } from '@deepseek-ai/dsh-client-ui-file-actions/client'
+import { OpenInAppPathController } from '../src/client/open-path.ts'
+import { OpenInAppController } from '../src/client/controller.ts'
+import { registerFileMenus } from '@deepseek-ai/dsh-client-ui-file-actions/src/client/context-menus.tsx'
+import { registerContextMenus } from '../src/client/context-menus.tsx'
+import type { OpenInAppToastSource } from '../src/client/open-toast.tsx'
+
+const sessionId = SessionId('menu-actions')
+afterEach(() => { vi.restoreAllMocks(); vi.unstubAllGlobals() })
+
+async function boot() {
+  vi.stubGlobal('Blob', NodeBlob)
+  const ctx = new Context()
+  const notify = vi.fn<ContextMenus['notify']>(), failure = vi.fn(), writeText = vi.fn(async () => {})
+  const report = vi.fn<OpenInAppToastSource['report']>()
+  vi.stubGlobal('navigator', { clipboard: { writeText } })
+  const registry = new MenuRegistry(failure)
+  const remote = {
+    session: {
+      canOpenWorkspacePath: vi.fn(async () => ({ ok: true as const, value: true })),
+      workspacePathApplications: vi.fn(async () => ({ ok: true as const, value: [
+        { id: 'preview', name: 'Preview', default: true, icon: 'data:image/png;base64,a' },
+      ] })),
+      openWorkspacePath: vi.fn(async () => ({ ok: true as const, value: undefined })),
+    },
+    workspaceFiles: {
+      stat: vi.fn(async () => ({ ok: true as const, value: { absolutePath: '/workspace/file.svg' } })),
+      readBytes: vi.fn(async () => ({ ok: true as const, value: { data: [...new TextEncoder().encode('<svg/>')] } })),
+    },
+  }
+  const save = vi.fn<(source: FileActionSource, mode: 'download' | 'saveAs') => Promise<FileSaveResult>>()
+    .mockResolvedValue({ status: 'saved', path: '/downloads/file.svg' })
+  const copyImage = vi.fn<(source: FileActionSource) => Promise<void>>().mockResolvedValue()
+  const fileActions = { save, copyImage, canSaveAs: true }
+  const sessions = createSnapshotStore({ byId: { [sessionId]: { cwd: '/workspace' } } })
+  const sidebar = { openResourceIn: vi.fn(), openTabIn: vi.fn() }
+  const browserTab = vi.fn(() => ({}))
+  const directoryFetch = vi.fn(async () => new Response(JSON.stringify({ apps: ['vscode', 'finder'] })))
+  const directories = new OpenInAppController(directoryFetch)
+  const paths = new OpenInAppPathController(remote)
+  ctx.provide('remote', remote as never)
+  ctx.provide('contextMenus', { register: registry.register.bind(registry), notify } as never)
+  ctx.provide('sessions', { list: sessions } as never)
+  ctx.provide('fileActions', fileActions as never)
+  ctx.provide('sidebarRight', sidebar as never)
+  ctx.provide('sidebarRightTabs', { get: browserTab } as never)
+  const fiber = ctx.plugin({ apply: (plugin: Context) => {
+    registerContextMenus(plugin, paths, key => key, directories, report)
+    registerFileMenus(plugin, ctx.fileActions, key => key)
+  } })
+  await fiber.await()
+  onTestFinished(async () => { registry.dispose(); await ctx.fiber.dispose() })
+  const resolve = async (target: ContextMenuTarget) => {
+    const menu = registry.resolve(target)
+    await menu.ready
+    return menu
+  }
+  const choose = async (target: ContextMenuTarget, id: string) => {
+    const menu = await resolve(target)
+    const action = menu.source.getSnapshot().find(item => item.id === id)
+    expect(action?.disabled).not.toBe(true)
+    expect(action).toBeDefined()
+    menu.select(id)
+    menu.dispose()
+    await vi.waitFor(() => { expect(save.mock.settledResults.every(result => result.type !== 'incomplete')).toBe(true) })
+    return action
+  }
+  return { registry, resolve, choose, remote, fileActions, paths, directories, directoryFetch, sessions,
+    sidebar, browserTab, notify, failure, writeText, report }
+}
+
+it('routes file actions through the captured pane, line, native association and original bytes', async () => {
+  const h = await boot()
+  const file = { kind: 'file', value: { sessionId, path: 'file.svg', paneId: 'pane' as never, line: 24 } } as const
+  await h.choose(file, 'open-in-app.file/sidebar')
+  expect(h.sidebar.openResourceIn).toHaveBeenCalledWith(sessionId, expect.stringContaining('file.svg'),
+    { paneId: 'pane', params: { line: 24 } })
+  const opened = await h.choose(file, 'open-in-app.file/open')
+  expect(opened?.icon).toEqual({ key: 'open-in-app.application', src: 'data:image/png;base64,a' })
+  expect(h.remote.session.openWorkspacePath).toHaveBeenCalledWith({ path: '/workspace/file.svg', application: 'preview' })
+  await vi.waitFor(() => { expect(h.report).toHaveBeenLastCalledWith({ kind: 'opened' }) })
+  await h.choose(file, 'open-in-app.file/reveal')
+  expect(h.remote.session.openWorkspacePath).toHaveBeenCalledWith({ path: '/workspace/file.svg', action: 'reveal' })
+  await vi.waitFor(() => { expect(h.report).toHaveBeenLastCalledWith({ kind: 'revealed' }) })
+  await h.choose(file, 'file-actions.file/copyImage')
+  await vi.waitFor(() => { expect(h.notify).toHaveBeenCalledWith('menu.copied', true) })
+  const source = h.fileActions.copyImage.mock.calls[0]![0]
+  expect(await (await source.read!(new AbortController().signal)).text()).toBe('<svg/>')
+  h.remote.workspaceFiles.readBytes.mockResolvedValueOnce({ ok: false } as never)
+  await expect(source.read!(new AbortController().signal)).rejects.toThrow('Original file unavailable')
+  await h.choose(file, 'file-actions.file/saveAs')
+  await vi.waitFor(() => { expect(h.notify).toHaveBeenCalledWith('menu.saved', true, expect.objectContaining({ label: 'menu.reveal' })) })
+  const simple = { kind: 'file', value: { sessionId: SessionId('absent'), path: '/file.unknown' } } as const
+  h.remote.session.workspacePathApplications.mockResolvedValueOnce({ ok: true, value: [] })
+  const menu = await h.resolve(simple)
+  expect(menu.source.getSnapshot().find(item => item.id.endsWith('/open'))?.disabled).toBe(true)
+  expect(menu.source.getSnapshot().some(item => item.id.endsWith('/copyImage'))).toBe(false)
+  expect(menu.source.getSnapshot().filter(item => item.id.startsWith('file-actions.')).map(item => item.id))
+    .toEqual(['file-actions.file/saveAs'])
+  menu.select('open-in-app.file/sidebar')
+  expect(h.sidebar.openResourceIn).toHaveBeenLastCalledWith(SessionId('absent'), expect.any(String), {})
+})
+
+it('keeps copy-path available on failed metadata and reports native action failures', async () => {
+  const h = await boot()
+  const file = { kind: 'file', value: { sessionId, path: 'file.svg' } } as const
+  h.remote.workspaceFiles.stat.mockResolvedValueOnce({ ok: false } as never).mockResolvedValueOnce({ ok: false } as never)
+  const menu = await h.resolve(file)
+  expect(menu.source.getSnapshot().find(item => item.id.endsWith('/saveAs'))?.disabled).toBe(true)
+  menu.select('open-in-app.file/copyPath')
+  expect(h.writeText).toHaveBeenCalledWith('/workspace/file.svg')
+  h.remote.workspaceFiles.stat.mockRejectedValueOnce(new Error('offline')).mockRejectedValueOnce(new Error('offline'))
+  expect((await h.resolve(file)).source.getSnapshot().find(item => item.id.endsWith('/sidebar'))?.disabled).toBe(true)
+  h.remote.session.openWorkspacePath.mockResolvedValueOnce({ ok: false } as never)
+  await h.choose(file, 'open-in-app.file/reveal')
+  await vi.waitFor(() => { expect(h.report).toHaveBeenLastCalledWith({ kind: 'failed', failure: 'revealError' }) })
+  h.remote.session.workspacePathApplications.mockResolvedValueOnce({ ok: false } as never)
+  expect((await h.resolve(file)).source.getSnapshot().find(item => item.id.endsWith('/open'))?.disabled).toBe(true)
+  h.paths.desktop.set(false)
+  h.fileActions.canSaveAs = false
+  const web = await h.resolve(file)
+  expect(web.source.getSnapshot().some(item => item.id.endsWith('/saveAs'))).toBe(false)
+  expect(web.source.getSnapshot().filter(item => ['/open', '/reveal'].some(suffix => item.id.endsWith(suffix)))
+    .every(item => item.disabled)).toBe(true)
+})
+
+it('opens links in the registered browser, externally, and on the clipboard', async () => {
+  const h = await boot()
+  const target = { kind: 'url', value: { sessionId, url: 'https://example.com/page' } } as const
+  await h.choose(target, 'open-in-app.url/sidebar')
+  expect(h.sidebar.openTabIn).toHaveBeenCalledWith(sessionId, 'browser', { params: { url: target.value.url } })
+  const external = vi.spyOn(window, 'open').mockReturnValue(null)
+  await h.choose(target, 'open-in-app.url/external')
+  expect(external).toHaveBeenCalledWith(target.value.url, '_blank', 'noopener,noreferrer')
+  await h.choose(target, 'open-in-app.url/copy')
+  expect(h.writeText).toHaveBeenCalledWith(target.value.url)
+  h.browserTab.mockReturnValueOnce(undefined as never)
+  expect((await h.resolve(target)).source.getSnapshot()[0]?.disabled).toBe(true)
+})
+
+it('distinguishes completed, requested and cancelled saves and surfaces rejected saves', async () => {
+  const h = await boot()
+  const image = { kind: 'image', value: { url: 'https://example.com/original' } } as const
+  for (const [status, notice] of [['saved', 'menu.downloaded'], ['requested', 'menu.downloadStarted'], ['cancelled', undefined]] as const) {
+    h.fileActions.save.mockResolvedValueOnce(status === 'saved' ? { status, path: '/downloads/file.png' } : { status })
+    h.notify.mockClear()
+    await h.choose(image, 'file-actions.image/download')
+    if (notice === undefined) expect(h.notify).not.toHaveBeenCalled()
+    else await vi.waitFor(() => { expect(h.notify).toHaveBeenCalledWith(notice, true,
+      status === 'saved' ? expect.objectContaining({ label: 'menu.reveal' }) : undefined) })
+  }
+  h.fileActions.save.mockRejectedValueOnce(new Error('disk full'))
+  await h.choose(image, 'file-actions.image/saveAs')
+  await vi.waitFor(() => { expect(h.failure).toHaveBeenCalledWith('menu.saveFailed') })
+})
+
+it('uses original image reads and keeps menu reveal on the original after saving elsewhere', async () => {
+  const h = await boot()
+  const local = { kind: 'image', value: { sessionId, path: 'file.svg', url: 'https://example.com/file', mediaType: 'image/svg+xml' } } as const
+  await h.choose(local, 'file-actions.image/copy')
+  const source = h.fileActions.copyImage.mock.calls[0]![0]
+  expect(source.name).toBe('file.svg')
+  expect((await source.read!(new AbortController().signal)).type).toBe('image/svg+xml')
+  h.remote.workspaceFiles.readBytes.mockResolvedValueOnce({ ok: false } as never)
+  await expect(source.read!(new AbortController().signal)).rejects.toThrow('Original image unavailable')
+  await h.choose(local, 'open-in-app.image/reveal')
+  expect(h.remote.session.openWorkspacePath).toHaveBeenCalledWith({ path: '/workspace/file.svg', action: 'reveal' })
+  await h.choose(local, 'file-actions.image/saveAs')
+  const menu = await h.resolve(local)
+  expect(menu.source.getSnapshot().filter(item => item.id.endsWith('/reveal'))).toMatchObject([
+    { id: 'open-in-app.image/reveal', disabled: false },
+  ])
+  menu.select('open-in-app.image/reveal')
+  await vi.waitFor(() => { expect(h.remote.session.openWorkspacePath).toHaveBeenLastCalledWith({ path: '/workspace/file.svg', action: 'reveal' }) })
+  const unknown = { kind: 'image', value: { sessionId, path: 'file.unknown', url: 'data:image/png;base64,eA==' } } as const
+  await h.choose(unknown, 'file-actions.image/saveAs')
+  expect((await h.fileActions.save.mock.calls.at(-1)![0].read!(new AbortController().signal)).type).toBe('')
+  h.fileActions.canSaveAs = false
+  const remote = await h.resolve({ kind: 'image', value: { url: 'https://example.com/file.png' } })
+  expect(remote.source.getSnapshot().some(item => item.id.endsWith('/saveAs'))).toBe(false)
+  expect(remote.source.getSnapshot().filter(item => item.id.endsWith('/reveal')).every(item => item.disabled)).toBe(true)
+})
+
+it.each(['darwin', 'win32'])('captures each completed destination in its %s toast action', async (platform) => {
+  const h = await boot()
+  const previous = document.documentElement.getAttribute('data-platform')
+  document.documentElement.setAttribute('data-platform', platform)
+  onTestFinished(() => {
+    if (previous === null) document.documentElement.removeAttribute('data-platform')
+    else document.documentElement.setAttribute('data-platform', previous)
+  })
+  const image = { kind: 'image', value: { url: 'https://example.com/original.png' } } as const
+  const actions: NonNullable<Parameters<ContextMenus['notify']>[2]>[] = []
+  for (const [mode, path] of [['download', '/downloads/original.png'], ['saveAs', '/elsewhere/renamed.png']] as const) {
+    h.fileActions.save.mockResolvedValueOnce({ status: 'saved', path })
+    await h.choose(image, `file-actions.image/${mode}`)
+    const action = h.notify.mock.lastCall![2]!
+    expect(action.label).toBe(platform === 'darwin' ? 'menu.finder' : 'menu.reveal')
+    actions.push(action)
+  }
+  await actions[0]!.run()
+  expect(h.remote.session.openWorkspacePath).toHaveBeenLastCalledWith({ path: '/downloads/original.png', action: 'reveal' }, expect.any(AbortSignal))
+  await actions[1]!.run()
+  expect(h.remote.session.openWorkspacePath).toHaveBeenLastCalledWith({ path: '/elsewhere/renamed.png', action: 'reveal' }, expect.any(AbortSignal))
+  expect((await h.resolve(image)).source.getSnapshot().filter(item => item.id.endsWith('/reveal'))).toMatchObject([
+    { id: 'open-in-app.image/reveal', disabled: true },
+  ])
+  h.remote.session.openWorkspacePath.mockResolvedValueOnce({ ok: false } as never)
+  await expect(actions[1]!.run()).rejects.toThrow('File location unavailable')
+  expect(actions[1]!.failureLabel).toBe('path.revealError')
+})
+
+it('offers only folder reveal and path copy, retaining the captured directory', async () => {
+  const h = await boot()
+  const target = { kind: 'directory', value: { sessionId, path: 'src' } } as const
+  const menu = await h.resolve(target)
+  expect(menu.source.getSnapshot().map(item => item.id)).toEqual(['open-in-app.directory/reveal', 'open-in-app.directory/copyPath'])
+  expect(h.remote.workspaceFiles.stat).not.toHaveBeenCalled()
+  h.sessions.set({ byId: { [sessionId]: { cwd: '/changed' } } })
+  menu.select('open-in-app.directory/reveal')
+  await vi.waitFor(() => { expect(h.remote.session.openWorkspacePath).toHaveBeenCalledWith({ path: '/workspace/src', action: 'reveal' }) })
+  h.sessions.set({ byId: { [sessionId]: { cwd: '/workspace' } } })
+  await h.choose(target, 'open-in-app.directory/copyPath')
+  expect(h.writeText).toHaveBeenLastCalledWith('/workspace/src')
+  h.paths.desktop.set(false)
+  const unavailable = await h.resolve(target)
+  expect(unavailable.source.getSnapshot()[0]?.disabled).toBe(true)
+  expect(unavailable.source.getSnapshot()[1]?.disabled).not.toBe(true)
+  await h.choose({ kind: 'directory', value: { sessionId: SessionId('absent'), path: '/absolute' } }, 'open-in-app.directory/copyPath')
+  expect(h.writeText).toHaveBeenLastCalledWith('/absolute')
+})
+
+it('opens the captured Workspace through the directory app catalog and reports launch failure', async () => {
+  const h = await boot()
+  const target: ContextMenuTarget = { kind: 'workspace', value: { workspaceId: 'workspace' as never, path: '/workspace', displayTitle: 'Workspace' } }
+  await h.choose(target, 'open-in-app.workspace/reveal')
+  expect(h.directoryFetch).toHaveBeenLastCalledWith(expect.any(String), expect.objectContaining({ body: JSON.stringify({ app: 'finder', path: '/workspace' }) }))
+  await vi.waitFor(() => { expect(h.report).toHaveBeenLastCalledWith({ kind: 'opened' }) })
+  h.directoryFetch.mockResolvedValueOnce(new Response('', { status: 500 }))
+  await h.choose(target, 'open-in-app.workspace/reveal')
+  await vi.waitFor(() => { expect(h.report).toHaveBeenLastCalledWith({ kind: 'failed', failure: 'revealError' }) })
+  h.directories.apps.set([])
+  expect((await h.resolve(target)).source.getSnapshot()[0]?.disabled).toBe(true)
+})
diff --git a/packages/client/ui-open-in-app/tests/context-menus.client.spec.ts b/packages/client/ui-open-in-app/tests/context-menus.client.spec.ts
new file mode 100644
index 0000000000..b973ff0c81
--- /dev/null
+++ b/packages/client/ui-open-in-app/tests/context-menus.client.spec.ts
@@ -0,0 +1,70 @@
+// @vitest-environment jsdom
+import type { FileActionSource } from '@deepseek-ai/dsh-client-ui-file-actions/client'
+import { Blob as NodeBlob } from 'node:buffer'
+import { Context } from '@deepseek-ai/cordis'
+import { afterEach, expect, it, vi } from 'vitest'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { SessionId } from '@deepseek-ai/dsh-session'
+import { MenuRegistry } from '@deepseek-ai/dsh-client-ui-context-menu/src/client/registry.ts'
+import { OpenInAppPathController } from '../src/client/open-path.ts'
+import { OpenInAppController } from '../src/client/controller.ts'
+import { registerFileMenus } from '@deepseek-ai/dsh-client-ui-file-actions/src/client/context-menus.tsx'
+import { registerContextMenus } from '../src/client/context-menus.tsx'
+
+afterEach(() => { vi.unstubAllGlobals() })
+
+it('offers image actions on file targets, copies absolute paths, and keeps save feedback after dismissal', async () => {
+  vi.stubGlobal('Blob', NodeBlob)
+  const ctx = new Context()
+  const notify = vi.fn(), failed = vi.fn()
+  const registry = new MenuRegistry(failed)
+  const id = SessionId('context-file')
+  const save = vi.fn(async (_source: FileActionSource, _mode: 'download' | 'saveAs') => ({ status: 'saved' as const, path: '/downloads/original.svg' }))
+  const copy = vi.fn(async () => {})
+  const writeText = vi.fn(async () => {})
+  vi.stubGlobal('navigator', { clipboard: { writeText } })
+  vi.stubGlobal('fetch', vi.fn(async () => new Response(JSON.stringify({ apps: ['finder'] }))))
+  const remote = { session: {
+    canOpenWorkspacePath: async () => ({ ok: true as const, value: true }),
+    workspacePathApplications: async () => ({ ok: true as const, value: [] }),
+    openWorkspacePath: async () => ({ ok: true as const, value: undefined }),
+  }, workspaceFiles: {
+    stat: async () => ({ ok: true as const, value: { absolutePath: '/workspace/original.svg' } }),
+    readBytes: async () => ({ ok: true as const, value: { data: [...new TextEncoder().encode('<svg/>')] } }),
+  } }
+  ctx.provide('remote', remote as never)
+  ctx.provide('contextMenus', { register: registry.register.bind(registry), notify } as never)
+  ctx.provide('sessions', { list: createSnapshotStore({ byId: { [id]: { cwd: '/workspace' } } }) } as never)
+  ctx.provide('fileActions', { save, copyImage: copy, canSaveAs: true } as never)
+  const paths = new OpenInAppPathController(remote)
+  const directories = new OpenInAppController()
+  const fiber = ctx.plugin({ apply: (plugin: Context) => {
+    registerContextMenus(plugin, paths, key => key, directories, vi.fn())
+    registerFileMenus(plugin, ctx.fileActions, key => key)
+  } })
+  await fiber.await()
+  try {
+    const file = { kind: 'file' as const, value: { sessionId: id, path: 'original.svg', line: 42 } }
+    const copying = registry.resolve(file)
+    await copying.ready
+    expect(copying.source.getSnapshot().map(action => action.id)).toEqual([
+      'open-in-app.file/sidebar', 'open-in-app.file/reveal', 'open-in-app.file/open',
+      'open-in-app.file/copyPath', 'file-actions.file/copyImage', 'file-actions.file/download', 'file-actions.file/saveAs',
+    ])
+    copying.select('open-in-app.file/copyPath')
+    expect(writeText).toHaveBeenCalledWith('/workspace/original.svg')
+    const downloading = registry.resolve(file)
+    await downloading.ready
+    downloading.select('file-actions.file/download')
+    downloading.dispose()
+    await vi.waitFor(() => { expect(notify).toHaveBeenCalledWith('menu.downloaded', true, expect.objectContaining({ failureLabel: 'path.revealError' })) })
+    const source = save.mock.calls[0]?.[0]
+    expect(source).toMatchObject({ name: 'original.svg', mediaType: 'image/svg+xml' })
+    expect(await (await source!.read!(new AbortController().signal)).text()).toBe('<svg/>')
+    const image = registry.resolve({ kind: 'image', value: { url: 'https://example.com/image.png' } })
+    await image.ready
+    expect(image.source.getSnapshot().find(action => action.id.endsWith('/reveal'))?.disabled).toBe(true)
+    image.dispose()
+    expect(failed).not.toHaveBeenCalled()
+  } finally { registry.dispose(); await fiber.dispose() }
+})
diff --git a/packages/client/ui-open-in-app/tests/session-reveal.client.spec.ts b/packages/client/ui-open-in-app/tests/session-reveal.client.spec.ts
new file mode 100644
index 0000000000..1638722be5
--- /dev/null
+++ b/packages/client/ui-open-in-app/tests/session-reveal.client.spec.ts
@@ -0,0 +1,48 @@
+import { Context } from '@deepseek-ai/cordis'
+import { expect, it, onTestFinished, vi } from 'vitest'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { MenuRegistry } from '@deepseek-ai/dsh-client-ui-context-menu/src/client/registry.ts'
+import type { SessionListState } from '@deepseek-ai/dsh-api-session-controller/client'
+import { SessionId } from '@deepseek-ai/dsh-session/types'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { OpenInAppController } from '../src/client/controller.ts'
+import { registerSessionReveal } from '../src/client/session-reveal.tsx'
+import { en, zh, NS } from '../src/client/locales.ts'
+
+it.each([
+  [['finder'], '/workspace', 'Show in Finder', false],
+  [['explorer'], '/workspace', 'Show in folder', false],
+  [['filemanager'], '/workspace', 'Show in folder', false],
+  [['vscode'], '/workspace', 'Show in folder', true],
+  [null, '/workspace', 'Show in folder', true],
+  [['finder'], undefined, 'Show in Finder', true],
+] as const)('reveals the captured directory with catalog %j and path %s', async (apps, cwd, label, disabled) => {
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  const locale = new LocaleRuntime(ctx)
+  ctx.provide('locale', locale)
+  locale.register(NS, { en, zh }); locale.setLocale('en')
+  const registry = new MenuRegistry(vi.fn())
+  onTestFinished(() => { registry.dispose() })
+  ctx.provide('contextMenus', { register: registry.register.bind(registry) } as never)
+  const sessionId = SessionId('captured')
+  const list = createSnapshotStore<SessionListState>({ ids: [sessionId], byId: {
+    [sessionId]: { id: sessionId, ...(cwd === undefined ? {} : { cwd }), displayTitle: 'Captured', running: false, blank: false, updatedAt: 1, retainedBy: {} },
+  }, phase: 'ready', projectionsBySession: {} })
+  ctx.provide('sessions', { list } as never)
+  const controller = new OpenInAppController()
+  controller.apps.set(apps)
+  const launch = vi.spyOn(controller, 'launch').mockResolvedValue({ kind: 'opened' })
+  const report = vi.fn()
+  registerSessionReveal(ctx, controller, locale.bind(NS), report)
+  const menu = registry.resolve({ kind: 'session', value: { sessionId, displayTitle: 'Captured' } })
+  expect(menu.source.getSnapshot()[0]).toMatchObject({ label, disabled })
+  menu.select('open-in-app.reveal/reveal')
+  if (disabled) {
+    expect(launch).not.toHaveBeenCalled()
+    expect(report).not.toHaveBeenCalled()
+  } else {
+    expect(launch).toHaveBeenCalledWith(apps?.[0], cwd)
+    await vi.waitFor(() => { expect(report).toHaveBeenCalledWith({ kind: 'opened' }) })
+  }
+})
diff --git a/packages/client/ui-open-in-app/tsconfig.json b/packages/client/ui-open-in-app/tsconfig.json
index f4b9263e3d..9e6a381554 100644
--- a/packages/client/ui-open-in-app/tsconfig.json
+++ b/packages/client/ui-open-in-app/tsconfig.json
@@ -61,6 +61,24 @@
     },
     {
       "path": "../shortcuts/tsconfig.client.json"
+    },
+    {
+      "path": "../ui-context-menu"
+    },
+    {
+      "path": "../../util/workspace-path"
+    },
+    {
+      "path": "../ui-sidebar-right"
+    },
+    {
+      "path": "../../api/workspace-files/tsconfig.client.json"
+    },
+    {
+      "path": "../ui-sidebar-browser/tsconfig.client.json"
+    },
+    {
+      "path": "../ui-workspace"
     }
   ]
 }
diff --git a/packages/client/ui-permission-presets/package.json b/packages/client/ui-permission-presets/package.json
index 04bee68aaa..3adaa84393 100644
--- a/packages/client/ui-permission-presets/package.json
+++ b/packages/client/ui-permission-presets/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-permission-presets",
   "description": "Permission surfaces: a new-session default in General settings and a current-session /permission popup over the permissions projection",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-permission-presets/tests/permission-presets-row.client.spec.tsx b/packages/client/ui-permission-presets/tests/permission-presets-row.client.spec.tsx
index 160bd49d80..869eef7130 100644
--- a/packages/client/ui-permission-presets/tests/permission-presets-row.client.spec.tsx
+++ b/packages/client/ui-permission-presets/tests/permission-presets-row.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { afterEach, describe, expect, it, vi } from 'vitest'
@@ -64,6 +65,7 @@ const runtime = {
   usePanelInfo, useSessionRetainInfo: () => undefined, useResource,
   useWorkspaces: (() => { throw new Error('unused') }) as never,
   ...allowAllAccess,
+  useContextMenu: contextMenuHook(),
 }
 
 function mount(controller: PermissionPresetSettingsController) {
diff --git a/packages/client/ui-plan/package.json b/packages/client/ui-plan/package.json
index 833a92eee5..9a8e654009 100644
--- a/packages/client/ui-plan/package.json
+++ b/packages/client/ui-plan/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-plan",
   "description": "Plan mode controls, persistent transcript plan cards, and sidebar Markdown previews",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-plugin-manager/README.i18n.yaml b/packages/client/ui-plugin-manager/README.i18n.yaml
index c1aab681db..f9d7f07f73 100644
--- a/packages/client/ui-plugin-manager/README.i18n.yaml
+++ b/packages/client/ui-plugin-manager/README.i18n.yaml
@@ -15,11 +15,11 @@
   en: d152484eb41ac6b4
   zh: 09388d293f9be9cb
 /deepseek-ai-dsh-client-ui-plugin-manager/use-this-package:
-  en: 535d6322bcfb329b
-  zh: fbf05155ccbb3e0e
+  en: 07da57fb0a0cb10e
+  zh: c743fd96317bec22
 /deepseek-ai-dsh-client-ui-plugin-manager/use-this-package/installing-a-bundle:
-  en: fcb2e69c8b028c0a
-  zh: d505a075679974eb
+  en: 45f62bdddae3f8c0
+  zh: 4be303f322a5553a
 /deepseek-ai-dsh-client-ui-plugin-manager/use-this-package/updating-a-registry-bundle:
   en: 9312d8b1b381378f
   zh: 8d0ae7ad26ada2ac
@@ -45,8 +45,8 @@
   en: 93871919adaf1082
   zh: 67c9ef0b500e6917
 /deepseek-ai-dsh-client-ui-plugin-manager/understand-the-implementation/the-store:
-  en: 21a0bbe8eb92229c
-  zh: 096ff63db61992bb
+  en: ef7ab41b4119c7b9
+  zh: 3166661bf84415e5
 /deepseek-ai-dsh-client-ui-plugin-manager/understand-the-implementation/configuration-slots:
   en: 45e324f5663be635
   zh: 674ddf55c1581569
@@ -60,8 +60,8 @@
   en: ca75c51c89c2c9b0
   zh: 2064958b0754647e
 /deepseek-ai-dsh-client-ui-plugin-manager/known-limitations-and-deferred-work:
-  en: 149c0d23a56a4944
-  zh: e2feaadc871581ae
+  en: 59bdd1e0bab0001a
+  zh: e3c96402be2e0687
 /deepseek-ai-dsh-client-ui-plugin-manager/known-limitations-and-deferred-work/dev-note:
   en: e67f633dc6fe7773
   zh: 3bb0c20c93f16f98
diff --git a/packages/client/ui-plugin-manager/README.md b/packages/client/ui-plugin-manager/README.md
index 397dd2495f..66a9a11321 100644
--- a/packages/client/ui-plugin-manager/README.md
+++ b/packages/client/ui-plugin-manager/README.md
@@ -27,7 +27,9 @@ Use the **Plugins** entry in the Web sidebar to manage the profile's installed b
 <a id="use-this-package"></a>
 ## Use this package
 
-[Ralph loops](../../experimental/ralph-bundle/README.md) and [Session search](../../experimental/session-search/README.md) remain bundled but are hidden from both plugin lists unless the profile enables or separately installs them. Existing selections remain manageable; switching off an installation-carried copy hides it again. Enter either exact package name in **Add plugin**, then choose **Enable now** to use the shipped copy without downloading it again. Sidebar session search is independent.
+Below 768px, the page uses 20px horizontal insets to align with the conversation header.
+
+[Ralph loops](../../experimental/ralph-bundle/README.md) and [Session search](../../experimental/session-search/README.md) remain bundled but are hidden from both plugin lists unless the profile enables or separately installs them. Existing selections remain manageable; switching off an installation-carried copy hides it again. Enter either exact package name in **Add plugin**, then choose **Enable now** to use the shipped copy without downloading it again. Sidebar session search is independent. LiveShare declares the same default-hidden intent in its bundle manifest (`dsh.bundle.listedByDefault: false`), so it stays out of both lists, including **More**, until a declared row runs or it is enabled. The page's manifest rule is generic: a bundle whose manifest does not declare `listedByDefault: false` is listed; one that does is listed only when the profile enables it, the installation carries it selected, or one of its declared rows runs; a hidden bundle is not opened by its ID either.
 
 Select **Plugins** in the sidebar. The information button uses an 11px caption-colored icon in a 20px square hover area, with a 4px gap after the subtitle. It explains that this page configures official plugins and installs or manages other plugins, while **Settings → Built-in plugins** shows the built-in inventory and runtime status. Hover or focus shows the shared tooltip; clicking keeps it open until another click, Escape, Tab, or an outside click. The page reads the inventory and the bundles through `api-remotes` when first opened; a Host without a managed profile shows the page as unavailable. **Built-in plugin settings** lists official configuration pages by their configured order: Subagent, web search, agent loop, then shell. **Experimental plugins** shows the primary optional bundles, with **More** beside its heading opening a separate page of the same title. That page lists the official bundles eligible for display, including those on the main list, with Codex and Claude Code subagents last. Its back button returns to the main list, where **Installed plugins** remains below Experimental plugins. Bundle details return to the list they were opened from. Catalog entries keep their position after installation or removal. **Installed plugins** lists other profile bundles. Installation-carried optional bundles have no uninstall action. Experimental packages retain the **Experimental** marker on both lists. Switching on a bundle that page holds back adds it to the main list in the position that page shows it, and switching it off leaves it on that page alone unless its manifest hides unselected bundles; other bundles keep their place on both. A dependency without a bundle patch is not a plugin and is not listed unless the profile selects it, in which case it carries a problem tag. Global configuration remains in the Settings **Built-in plugins** section.
 
@@ -37,7 +39,7 @@ Installed bundles and their plugin rows display their own title and description
 
 A bundle's page shows the bundle's detail document first among its sections, without a heading of its own: the bundle's long description in the current UI language, as Markdown with images. It is the Markdown file that `meta.detail` in the bundle's `locale/<language>.json` names, otherwise the bundle's README, read by [`pluginManager.readBundleDetail`](../../boot/plugin-manager/README.md#bundle-detail-documents) in the [document order of `dsh-plugin-detail`](../../util/plugin-detail/README.md#document-order); the repository a bundle declares is not read. An installed bundle's document comes from its own files without network access, and an on-demand Official bundle's from the npm file CDNs at its offered version. While the document loads the section shows three skeleton lines; a bundle without a document shows no section; a failed read names its reason with **Retry**. Raw HTML is omitted, relative images load from the Host beside the document, relative links stay text, and a document taller than the section's height limit scrolls inside it. A bundle whose files are not installed, such as an on-demand Official bundle, is read from the npm file CDNs: its read first asks the Host's registry comparison and, when npmmirror answered fastest, reads it and its images from npmmirror first. An installed bundle's read does not wait for the comparison. Any profile change and a connection reset read shown documents again.
 
-On-demand Official cards are visible offline before installation. Turning one On opens the existing install progress dialog, installs the [target offered by the running Host](../../boot/plugin-manager/README.md#use-this-package), and selects its layer. The same registry fallback, cancellation, and script-approval controls apply. Turning Off keeps the dependency installed; Remove is separate. A different version or development link source offers **Update**; details show current and offered sources and versions. An update removes the installed package and installs the offered one with the same selection, reporting whether a restart is required; when the installation fails after the removal, the package stays uninstalled. Missing or unreadable packages keep their recorded dependency source alongside the diagnostic. An enabled bundle can still be switched Off when its checkout target is unavailable.
+On-demand Official cards follow package discovery visibility and are available offline before installation. In Add plugin, a bare Official package name uses the Host’s matching-version or source-checkout target, retains the selected registry, and offers Enable now after installation. Turning one On opens the existing install progress dialog, installs the [target offered by the running Host](../../boot/plugin-manager/README.md#use-this-package), and selects its layer. The same registry fallback, cancellation, and script-approval controls apply. Turning Off keeps the dependency installed; Remove is separate. A different version or development link source offers **Update**; details show current and offered sources and versions. An update removes the installed package and installs the offered one with the same selection, reporting whether a restart is required; when the installation fails after the removal, the package stays uninstalled. Missing or unreadable packages keep their recorded dependency source alongside the diagnostic. An enabled bundle can still be switched Off when its checkout target is unavailable.
 
 The first list read shows a short group-heading placeholder and four skeleton cards, using the real cards' row, icon, and text-line spacing, with the action area left blank. They use the same opacity pulse as Session search and remain static with reduced motion. The accessible loading label and read timing are unchanged; refreshes retain the existing list, and installation and component-loading indicators keep their own states.
 
@@ -60,7 +62,7 @@ On first use, when pnpm uses the unconfigured official npm registry and npmmirro
 
 The Host sends GET requests to `https://registry.npmjs.org/-/ping` and `https://registry.npmmirror.com/-/ping` through its normal fetch proxy. A 2xx response wins; redirects and failures do not. The remaining request is cancelled, both response bodies are discarded, and cleanup completes before the result returns. The default deadline is 1500 ms and results, including unavailable results, are cached for five minutes. Configure `registryProbeTimeoutMs` and `registryProbeCacheTtlMs` on `ui-plugin-manager`; `registryProbeEnabled: false` disables probing. If both requests fail or time out, the existing default remains selected. No IP-location service or Session content is involved.
 
-**Add plugin** takes a package name with an optional version, a Git address, a tarball, or an absolute local path; the dialog says a package name is what follows `dsh plugin add` in a README. Enter in the package or custom-registry field submits the install request, but Enter used to confirm an input-method candidate does not. **Install guide and examples** under the field opens a guide that shows the package-name example; **Use example** drops it into the field. Typing or pasting the Git or local-path template verbatim still raises the reminder asking for the actual value. A trust box above **Install** stays visible including when the guide is collapsed, and explains that on-demand Official entries offer explicit Update, while other plugins are upgraded by uninstalling and reinstalling. **Registry** beside it names the registry the install asks first and unfolds the choice: pnpm's own registry, named by the registry it actually names — the official npm registry, the mainland China mirror, or its host — which keeps the neutral default name until the Host reads it, is listed once, and carries its host unless that host is already its name; each mirror the Host configured (`pluginManager.registries`), npmmirror as the mainland China mirror; and a typed http(s) address. The options use an opaque selector panel, fill rows only on hover, and show hosts in tertiary text without parentheses. The custom-address area highlights on hover; clicking anywhere in it selects the custom registry and focuses its input, whose focus style matches the package field. Keyboard focus alone preserves the selected registry; activating the custom radio or editing the address selects the custom registry. Tab moves from the selected radio to the address, and Shift+Tab moves back; leaving either end closes the selector and returns focus to **Registry**. Switching to an offered registry retains the custom URL draft for switching back. Submitting an invalid custom address blocks installation, opens the registry selector, and focuses the address. Invalid package and custom-address fields keep a red error border and add the shared blue inset focus ring on focus. The options float over the dialog from the control, so unfolding them never lengthens the card, and the card's content scrolls when the guide makes it taller than the viewport. The initial choice follows the response comparison above; the choice is then remembered in this browser (`localStorage`) and starts the next dialog, and a remembered address the Host no longer offers stays as a typed one and remains the requested address when installation starts before the registry list returns. **Install** first asks the Host to read what the spec names (`pluginManager.inspect`) at the chosen registry: a name the list already shows, a name no registry has, a path without a package, a package without a bundle patch, or a spec pnpm would refuse comes back under the field as one sentence, with the spec kept for editing; when no registry could be reached, the sentence names every one asked. The install then starts at the registry that answered. An accepted spec opens the installing screen, which shows the package's name, one-liner, and version as the Host read them and folds pnpm's command and output behind **Show install details**. Each command line stays on one line and scrolls horizontally; selecting its text includes offscreen arguments. A finished install shows the version pnpm installed; when a run that asked one registry installed another version than the one read, it names both versions, attributes the difference to pnpm's supply-chain security policy (`minimumReleaseAge`), states the risk of a newly published version, and gives the exact `name@version` to install after uninstalling. A finished install offers **Enable now**, which switches the new bundle on, closes the dialog, and scrolls to its card if it is on the current page; closing instead leaves it installed and off. While the Host moves on to another registry, the installing screen says which registry could not serve the package and which is asked now, and each pnpm run behind the details carries a badge naming its registry. A failed install says what went wrong in one line, as the Host attributed it — no registry could be reached, naming every one asked; the host a GitHub address or a tarball link is fetched from could not be reached, which no registry helps; the package was not found, the disk is full, the profile is not writable, pnpm blocked a build script — with pnpm's output behind the details and **Retry** at hand, and **Change registry** beside it when the Host laid the failure at the registry it asked, which returns to the spec with the registry options open; the Host has already put the profile files back. When pnpm blocked a dependency's install scripts, the failed screen lists the packages whose scripts wait for permission and offers **Allow these scripts and retry** in place of **Retry**; the Host saves the permission in the profile's `pnpm-workspace.yaml`, which a failed run leaves as pnpm wrote it, then runs pnpm again, and the installed screen names what was allowed. A successful installation does not certify that a module can activate.
+**Add plugin** takes a package name with an optional version, a Git address, a tarball, or an absolute local path; the dialog says a package name is what follows `dsh plugin add` in a README. Enter in the package or custom-registry field submits the install request, but Enter used to confirm an input-method candidate does not. **Install guide and examples** under the field opens a guide that shows the package-name example; **Use example** drops it into the field. Typing or pasting the Git or local-path template verbatim still raises the reminder asking for the actual value. A trust box above **Install** stays visible including when the guide is collapsed, and explains that on-demand Official entries offer explicit Update, while other plugins are upgraded by uninstalling and reinstalling. **Registry** beside it names the registry the install asks first and unfolds the choice: pnpm's own registry, named by the registry it actually names — the official npm registry, the mainland China mirror, or its host — which keeps the neutral default name until the Host reads it, is listed once, and carries its host unless that host is already its name; each mirror the Host configured (`pluginManager.registries`), npmmirror as the mainland China mirror; and a typed http(s) address. The options use an opaque selector panel, fill rows only on hover, and show hosts in tertiary text without parentheses. The custom-address area highlights on hover; clicking anywhere in it selects the custom registry and focuses its input, whose focus style matches the package field. Keyboard focus alone preserves the selected registry; activating the custom radio or editing the address selects the custom registry. Tab moves from the selected radio to the address, and Shift+Tab moves back; leaving either end closes the selector and returns focus to **Registry**. Switching to an offered registry retains the custom URL draft for switching back. Submitting an invalid custom address blocks installation, opens the registry selector, and focuses the address. Invalid package and custom-address fields keep a red error border and add the shared blue inset focus ring on focus. The options float over the dialog from the control, so unfolding them never lengthens the card, and the card's content scrolls when the guide makes it taller than the viewport. The initial choice follows the response comparison above; the choice is then remembered in this browser (`localStorage`) and starts the next dialog, and a remembered address the Host no longer offers stays as a typed one and remains the requested address when installation starts before the registry list returns. **Install** first asks the Host to read what the spec names (`pluginManager.inspect`) at the chosen registry: a name the list already shows, a name no registry has, a path without a package, a package without a bundle patch, or a spec pnpm would refuse comes back under the field as one sentence, with the spec kept for editing; when no registry could be reached, the sentence names every one asked. The install then starts at the registry that answered. An accepted spec opens the installing screen, which shows the package's name, one-liner, and version as the Host read them and folds pnpm's command and output behind **Show install details**. Each command line stays on one line and scrolls horizontally; selecting its text includes offscreen arguments. A finished install shows the version pnpm installed; when a run that asked one registry installed another version than the one read, it names both versions, attributes the difference to pnpm's supply-chain security policy (`minimumReleaseAge`), states the risk of a newly published version, and gives the exact `name@version` to install after uninstalling. A finished install offers **Enable now**, which switches the new bundle on, closes the dialog, and scrolls to its card if it is on the current page; closing instead leaves it installed and off. While the Host moves on to another registry, the installing screen says which registry could not serve the package and which is asked now, and each pnpm run behind the details carries a badge naming its registry. A failed install says what went wrong in one line, as the Host attributed it — no registry could be reached, naming every one asked; the host a GitHub address or a tarball link is fetched from could not be reached, which no registry helps; the package was not found, the disk is full, the profile is not writable, pnpm blocked a build script — and, when the install asked to enable the added bundle, says when it finished and enabling that bundle is what failed. Its details hold pnpm's output and the path of the settled run's complete Host log, or a note that the dialog received no terminal output; **Retry** is at hand, and **Change registry** beside it when the Host laid the failure at the registry it asked, which returns to the spec with the registry options open; the Host has already put the profile files back. When pnpm blocked a dependency's install scripts, the failed screen lists the packages whose scripts wait for permission and offers **Allow these scripts and retry** in place of **Retry**; the Host saves the permission in the profile's `pnpm-workspace.yaml`, which a failed run leaves as pnpm wrote it, then runs pnpm again, and the installed screen names what was allowed. A successful installation does not certify that a module can activate.
 
 During preparation and download, **Cancel install** asks the Host to stop the run and waits for confirmation. Loading the bundle cannot be cancelled. Closing with ×, Escape, or the backdrop hides the dialog immediately and requests cancellation when possible. **View installation** reopens the same task with its output; another installation cannot start while its outcome is pending or unconfirmed. Confirmed cancellation returns to the spec and shows a toast; the manifest and lockfile are restored, while downloaded files can remain. A lost installation response triggers a request to recover the result; **Check installation status** and reconnect retry that request. If the Host has no active request, **Installation result unavailable** allows returning to editing after checking the plugin list. A cancellation sent before acceptance waits and retries automatically; a failed cancellation can be retried manually. Hidden tasks report their outcome through toasts without reopening the dialog.
 
@@ -140,7 +142,7 @@ While the Plugins page has access, other Client plugins can read `pluginNavigati
 
 ### The store
 
-`PluginManagerController` owns the bundle views, busy keys, notices, install progress and the uninstall confirmation. Each read asks the inventory whether the Host manages a profile, then joins `listBundles` with `listPlugins` into one view per bundle, whose rows carry the live entry's enablement and fiber phase. It coalesces overlapping reads, refreshes after operations, on `plugin-manager/changed`, and on reconnect, and ignores late results after disposal. Install output is grouped by job id. The install dialog moves `idle → checking → starting → running → done | failed`, with `cancelling` and `applying` as the Host reports them and `unconfirmed` when an installation or cancellation response is lost; confirmed `applying` progress never regresses. Recovery uses `waitForInstall`, settling to `unknown` if no active request remains; checking and every active phase use ongoing, while the final screens use done or error. The check runs under an `AbortController` that going back or closing aborts, and its settlement is dropped; a run is stopped only through `pluginManager.cancelInstall`. Closing hides a run without discarding its state. A cancellation that overtakes installation is retried when progress or output acknowledges the request. A change the Host could not apply, a restart it waits for, and an override by a higher layer become toasts that retire on their own.
+`PluginManagerController` owns the bundle views, busy keys, notices, install progress and the uninstall confirmation. Each read asks the inventory whether the Host manages a profile, then joins `listBundles` with `listPlugins` into one view per bundle, whose rows carry the live entry's enablement and fiber phase. It coalesces overlapping reads, refreshes after operations, on `plugin-manager/changed`, and on reconnect, and ignores late results after disposal. Install output is grouped by job id, and the dialog keeps the failed step and the run's complete Host log path. The install dialog moves `idle → checking → starting → running → done | failed`, with `cancelling` and `applying` as the Host reports them and `unconfirmed` when an installation or cancellation response is lost; confirmed `applying` progress never regresses. Recovery uses `waitForInstall`, settling to `unknown` if no active request remains; checking and every active phase use ongoing, while the final screens use done or error. The check runs under an `AbortController` that going back or closing aborts, and its settlement is dropped; a run is stopped only through `pluginManager.cancelInstall`. Closing hides a run without discarding its state. A cancellation that overtakes installation is retried when progress or output acknowledges the request. A change the Host could not apply, a restart it waits for, and an override by a higher layer become toasts that retire on their own.
 
 ### Configuration slots
 
@@ -184,6 +186,7 @@ None; this package neither assembles nor sends a provider request.
 
 These limits define the reach of the management view; they are current package constraints.
 
+- **Log path for the settled run only** — the details name the complete Host log of the run that settled the dialog, on the Host's filesystem; earlier registry attempts have no link, and a browser connected to a remote Host may not be able to open that path.
 - **Page lifetime** — refreshing the browser loses the tracked request and output. Reconnecting within the same page can recover an active request; completed results are not retained by the Host. Profile file locking serializes installation writes.
 - **Only bundles are managed** — a dependency without a bundle patch is refused before it installs; one the profile already holds is left off the page unless the profile selects it, and loading plain plugin modules stays a file operation.
 - **Rows show a phase, not a reason** — a failed row reads as failed without the Host's error text; the Host log has it.
diff --git a/packages/client/ui-plugin-manager/README.zh.md b/packages/client/ui-plugin-manager/README.zh.md
index dccd4cacd3..bfffd1fe09 100644
--- a/packages/client/ui-plugin-manager/README.zh.md
+++ b/packages/client/ui-plugin-manager/README.zh.md
@@ -27,7 +27,9 @@ kind: "package-reference"
 <a id="use-this-package"></a>
 ## 使用本包
 
-[Ralph 循环](../../experimental/ralph-bundle/README.zh.md)和[会话搜索](../../experimental/session-search/README.zh.md)仍随包提供，但默认不在两个插件列表中展示，只有 profile 启用或另行安装后才显示。已有的启用状态仍可管理；关闭随安装提供的版本后，它会再次隐藏。在**添加插件**中输入准确包名，再选择**立即启用**，即可使用随包提供的版本，无需再次下载。侧栏会话搜索独立于此功能。
+宽度小于 768px 时，页面使用 20px 的左右内边距，与会话页头对齐。
+
+[Ralph 循环](../../experimental/ralph-bundle/README.zh.md)和[会话搜索](../../experimental/session-search/README.zh.md)仍随包提供，但默认不在两个插件列表中展示，只有 profile 启用或另行安装后才显示。已有的启用状态仍可管理；关闭随安装提供的版本后，它会再次隐藏。在**添加插件**中输入准确包名，再选择**立即启用**，即可使用随包提供的版本，无需再次下载。侧栏会话搜索独立于此功能。LiveShare 在其 bundle manifest 中声明相同的默认隐藏意图（`dsh.bundle.listedByDefault: false`），因此在自身声明的行开始运行或被启用前，它不会出现在两个列表（含**更多**页）中。页面的 manifest 规则是通用的：未声明 `listedByDefault: false` 的组合包会列出；声明了的，只有在 profile 启用、安装随附版本被选中，或它声明的某一行开始运行时才列出；隐藏的组合包也不能通过 ID 打开详情。
 
 在侧栏选择**插件**。信息按钮使用 11px 的 caption 色图标和 20px 方形悬停区域，与副标题间隔 4px。它说明当前页用于配置官方插件、安装和管理其他插件，**设置 → 内置插件**则展示内置插件列表及运行状态。悬停或聚焦显示共享 tooltip；点击后保持展开，直至再次点击、Escape、Tab 或外部点击。页面首次打开时通过 `api-remotes` 读取清单与组合包；没有受管 profile 的 Host 上页面显示为不可用。**内置插件配置**按配置的顺序列出官方配置页：子智能体、网页搜索、Agent 循环、终端。**实验性插件**展示主要的可选组合包，标题旁的**更多**打开同名的独立页面。该页列出符合展示条件的官方组合包，也包含主列表已有的条目，Codex 和 Claude Code 子智能体排在最后。返回按钮回到主列表，**已安装插件**保持在实验性插件下方。组合包详情返回打开它的列表。目录条目在安装或移除后保持原位置。**已安装插件**列出其他 profile 组合包。安装随附的可选组合包没有卸载操作。实验性包在两个列表中均保留**实验性**标签。开启仅在该页列出的组合包会按该页中的位置把它加入主列表，关闭后它只留在该页，但 manifest 声明默认隐藏的组合包会从该页消失；其他组合包在两个列表中均保持原位。没有组合包 patch 的依赖不是插件，除非 profile 选中了它才会带异常标签列出。全局配置仍在设置的**内置插件**分区中编辑。
 
@@ -37,7 +39,7 @@ kind: "package-reference"
 
 组合包页面在其各部分中首先显示该组合包的详细介绍文档，不带单独的标题：以当前界面语言、带图片的 Markdown 显示该组合包的详细介绍。该文档是组合包 `locale/<language>.json` 中 `meta.detail` 指定的 Markdown 文件，没有时为组合包的 README，由 [`pluginManager.readBundleDetail`](../../boot/plugin-manager/README.zh.md#bundle-detail-documents) 按 [`dsh-plugin-detail` 的文档顺序](../../util/plugin-detail/README.zh.md#document-order)读取；不读取组合包声明的仓库。已安装组合包的文档来自其自身文件，不访问网络；按需官方组合包的文档按其提供的版本从 npm 文件 CDN 读取。文档加载期间，该部分显示三行骨架屏；没有文档的组合包不显示该部分；读取失败时说明原因，并提供**重试**。原始 HTML 会被省略，相对路径的图片从 Host 上该文档旁的位置加载，相对链接保持为文本，文档高度超过该部分的高度上限时在该部分内滚动。文件未安装的组合包（例如按需官方组合包）从 npm 文件 CDN 读取：读取前先询问 Host 的注册表比较，npmmirror 响应最快时，先从 npmmirror 读取该文档及其图片。已安装组合包的读取不等待该比较。任何 profile 变化和连接重置都会重新读取已显示的文档。
 
-官方按需卡片在安装前即可离线显示。开启会打开已有的安装进度对话框，安装[当前 Host 提供的目标](../../boot/plugin-manager/README.zh.md#use-this-package)并选择配置层。安装源回退、取消和脚本审批继续使用同一组控件。关闭保留依赖；移除是独立操作。版本或开发链接来源不同会提供**更新**；详情显示当前及所提供的来源和版本。更新先删除已安装的包，再以相同的选择状态安装所提供的包，并报告是否需要重启；删除之后安装失败时，该包保持未安装。文件缺失或不可读的包在诊断旁保留记录的依赖来源。已启用的 bundle 在 checkout 目标不可用时仍可关闭。
+官方按需卡片遵循包的显示声明，在安装前即可离线读取。在“添加插件”中输入不带版本的官方包名时，使用 Host 提供的匹配版本或源码 checkout 目标，保留用户选择的安装源，并在安装后提供“立即启用”。开启会打开已有的安装进度对话框，安装[当前 Host 提供的目标](../../boot/plugin-manager/README.zh.md#use-this-package)并选择配置层。安装源回退、取消和脚本审批继续使用同一组控件。关闭保留依赖；移除是独立操作。版本或开发链接来源不同会提供**更新**；详情显示当前及所提供的来源和版本。更新先删除已安装的包，再以相同的选择状态安装所提供的包，并报告是否需要重启；删除之后安装失败时，该包保持未安装。文件缺失或不可读的包在诊断旁保留记录的依赖来源。已启用的 bundle 在 checkout 目标不可用时仍可关闭。
 
 首次读取列表时，页面显示一条较短的分组标题占位和四行骨架卡片，沿用真实卡片的行、图标和文字间距，操作区域留白。骨架使用与 Session 搜索相同的透明度呼吸动效，在减少动态效果模式下保持静止。无障碍加载文案和读取时机不变；刷新时保留已有列表，安装及组件加载仍使用各自的状态提示。
 
@@ -60,7 +62,7 @@ kind: "package-reference"
 
 Host 通过普通 fetch 代理向 `https://registry.npmjs.org/-/ping` 和 `https://registry.npmmirror.com/-/ping` 发送 GET 请求，以最先返回 2xx 的源为结果；重定向和失败不参与选择。随后取消另一条请求、丢弃两个响应体，并在清理完成后返回。默认时限为 1500 毫秒，包括不可用结果在内的探测结果均缓存五分钟。在 `ui-plugin-manager` 上配置 `registryProbeTimeoutMs` 和 `registryProbeCacheTtlMs`；`registryProbeEnabled: false` 关闭探测。两条请求都失败或超时时保留现有默认源。不使用 IP 地区服务，也不发送 Session 内容。
 
-**添加插件**接受包名（可带版本）、Git 地址、压缩包或本地绝对路径；对话框说明包名就是 README 里 `dsh plugin add` 后面的那一段。在包名或自定义安装源输入框中按 Enter 会提交安装请求，但用于确认输入法候选词的 Enter 不会触发安装。输入框下方的**插件安装引导和示例**展开一段引导，给出包名示例；**填入示例**把它填进输入框。输入框中若原样保留 Git 地址或本地路径的模板文本，仍会显示要求替换为实际值的提醒。**安装**按钮上方的提示框在引导收起后也可见，并说明官方按需插件提供显式更新；其他插件通过卸载后重新安装升级。旁边的**安装源**写着安装首先询问的注册表，展开后可选：pnpm 自身的注册表，按它实际指向的源命名——npm 官方源、中国大陆镜像源，其余以主机名显示——Host 读不到时保留中性的默认名称，只列一次，选项标题带上主机名（主机名即名称时不重复显示）；Host 配置的每个镜像（`pluginManager.registries`），npmmirror 显示为中国大陆镜像源；以及手动输入的 http(s) 地址。选项使用不透明选择面板，仅悬停行使用底色，主机名不加括号并使用三级文字色。自定义地址区域在悬停时高亮；点击其中任意位置会选中自定义源并聚焦输入框，焦点样式与包名输入框一致。仅通过键盘聚焦不会改变已选安装源；激活自定义单选项或编辑地址才会选中自定义源。Tab 从已选单选项移到地址框，Shift+Tab 反向返回；从任一端移出时关闭选择器，并将焦点交还**安装源**按钮。切到预设源时保留自定义地址草稿，切回后继续使用。提交无效的自定义地址时会阻止安装，展开安装源选择器并聚焦地址框。包名和自定义地址输入框无效时保留红色错误边框，聚焦时加上共享的蓝色内嵌焦点环。选项从控件上浮在对话框之上，展开不会拉长卡片；引导使卡片高过视口时，卡片内容可以滚动。初始选择遵循上文的响应比较规则；之后选择记在本浏览器（`localStorage`）里，下次打开对话框从它开始，Host 不再提供的已记住地址保留为手动输入的地址；在安装源列表返回前开始安装，也仍请求该地址。**安装**先让 Host 在所选注册表读出 spec 指向什么（`pluginManager.inspect`）：列表中已有的名字、所有注册表都没有的名字、没有包的路径、没有组合包 patch 的包，或 pnpm 会拒绝的 spec，都以一句话回到输入框下方，spec 保留可继续编辑；所有注册表都连不上时，这句话列出问过的每一个。随后安装从作答的那个注册表开始。通过检查的 spec 打开安装中界面，展示 Host 读到的包名、一句话简介和版本，pnpm 的命令与输出折叠在**查看安装详情**之后。每条命令行保持单行并可横向滚动；选择文本时可包含屏幕外的参数。安装完成的画面显示 pnpm 实际安装的版本；只问过一个注册表的运行装入的版本与检查读到的不同时，会写明两个版本，说明差异来自 pnpm 供应链安全策略（`minimumReleaseAge`），提示新发布版本的风险，并给出卸载后应安装的精确 `name@version`。安装完成后提供**立即启用**：启用新组合包、关闭对话框，并在当前页面有对应卡片时滚动定位；直接关闭则让它保持已安装但关闭。Host 改问另一个注册表时，安装中界面会说明哪个源没能提供这个包、现在改问哪个，详情里每次 pnpm 运行都带一个写明所用源的标记。安装失败时按 Host 的归因用一行话说明原因——所有安装源都连不上，并列出问过的每一个；GitHub 地址或压缩包链接自身的主机连不上，换源无济于事；包不存在、磁盘已满、profile 不可写、pnpm 拦下了构建脚本——pnpm 输出在详情里，**重试**就在手边，Host 把失败归于所问注册表时还在旁边提供**更换安装源**，回到 spec 输入界面并展开安装源选项；Host 已经把 profile 文件放回原样。pnpm 拦下依赖的安装脚本时，失败界面列出等待允许的包，并以**允许这些脚本并重试**取代**重试**；Host 把授权写进 profile 的 `pnpm-workspace.yaml`（失败的运行保留 pnpm 写入的这个文件）再运行 pnpm，安装完成界面会说明允许了哪些脚本。安装成功不代表模块一定能够激活。
+**添加插件**接受包名（可带版本）、Git 地址、压缩包或本地绝对路径；对话框说明包名就是 README 里 `dsh plugin add` 后面的那一段。在包名或自定义安装源输入框中按 Enter 会提交安装请求，但用于确认输入法候选词的 Enter 不会触发安装。输入框下方的**插件安装引导和示例**展开一段引导，给出包名示例；**填入示例**把它填进输入框。输入框中若原样保留 Git 地址或本地路径的模板文本，仍会显示要求替换为实际值的提醒。**安装**按钮上方的提示框在引导收起后也可见，并说明官方按需插件提供显式更新；其他插件通过卸载后重新安装升级。旁边的**安装源**写着安装首先询问的注册表，展开后可选：pnpm 自身的注册表，按它实际指向的源命名——npm 官方源、中国大陆镜像源，其余以主机名显示——Host 读不到时保留中性的默认名称，只列一次，选项标题带上主机名（主机名即名称时不重复显示）；Host 配置的每个镜像（`pluginManager.registries`），npmmirror 显示为中国大陆镜像源；以及手动输入的 http(s) 地址。选项使用不透明选择面板，仅悬停行使用底色，主机名不加括号并使用三级文字色。自定义地址区域在悬停时高亮；点击其中任意位置会选中自定义源并聚焦输入框，焦点样式与包名输入框一致。仅通过键盘聚焦不会改变已选安装源；激活自定义单选项或编辑地址才会选中自定义源。Tab 从已选单选项移到地址框，Shift+Tab 反向返回；从任一端移出时关闭选择器，并将焦点交还**安装源**按钮。切到预设源时保留自定义地址草稿，切回后继续使用。提交无效的自定义地址时会阻止安装，展开安装源选择器并聚焦地址框。包名和自定义地址输入框无效时保留红色错误边框，聚焦时加上共享的蓝色内嵌焦点环。选项从控件上浮在对话框之上，展开不会拉长卡片；引导使卡片高过视口时，卡片内容可以滚动。初始选择遵循上文的响应比较规则；之后选择记在本浏览器（`localStorage`）里，下次打开对话框从它开始，Host 不再提供的已记住地址保留为手动输入的地址；在安装源列表返回前开始安装，也仍请求该地址。**安装**先让 Host 在所选注册表读出 spec 指向什么（`pluginManager.inspect`）：列表中已有的名字、所有注册表都没有的名字、没有包的路径、没有组合包 patch 的包，或 pnpm 会拒绝的 spec，都以一句话回到输入框下方，spec 保留可继续编辑；所有注册表都连不上时，这句话列出问过的每一个。随后安装从作答的那个注册表开始。通过检查的 spec 打开安装中界面，展示 Host 读到的包名、一句话简介和版本，pnpm 的命令与输出折叠在**查看安装详情**之后。每条命令行保持单行并可横向滚动；选择文本时可包含屏幕外的参数。安装完成的画面显示 pnpm 实际安装的版本；只问过一个注册表的运行装入的版本与检查读到的不同时，会写明两个版本，说明差异来自 pnpm 供应链安全策略（`minimumReleaseAge`），提示新发布版本的风险，并给出卸载后应安装的精确 `name@version`。安装完成后提供**立即启用**：启用新组合包、关闭对话框，并在当前页面有对应卡片时滚动定位；直接关闭则让它保持已安装但关闭。Host 改问另一个注册表时，安装中界面会说明哪个源没能提供这个包、现在改问哪个，详情里每次 pnpm 运行都带一个写明所用源的标记。安装失败时按 Host 的归因用一行话说明原因——所有安装源都连不上，并列出问过的每一个；GitHub 地址或压缩包链接自身的主机连不上，换源无济于事；包不存在、磁盘已满、profile 不可写、pnpm 拦下了构建脚本——当这次安装要求启用新增的组合包时，还会注明安装本身已完成、失败发生在启用时。详情里有 pnpm 输出和结束这次对话框的那次运行的完整 Host 日志路径，安装详情没有收到终端输出时也会直接说明；**重试**就在手边，Host 把失败归于所问注册表时还在旁边提供**更换安装源**，回到 spec 输入界面并展开安装源选项；Host 已经把 profile 文件放回原样。pnpm 拦下依赖的安装脚本时，失败界面列出等待允许的包，并以**允许这些脚本并重试**取代**重试**；Host 把授权写进 profile 的 `pnpm-workspace.yaml`（失败的运行保留 pnpm 写入的这个文件）再运行 pnpm，安装完成界面会说明允许了哪些脚本。安装成功不代表模块一定能够激活。
 
 准备和下载期间，**取消安装**会请求 Host 停止运行并等待确认。加载组合包的阶段不可取消。点击 ×、按 Escape 或点击遮罩会立即隐藏对话框，并在可以取消时请求取消。**查看安装任务**会重新打开同一任务并保留输出；结果待定或尚未确认时不能发起另一项安装。确认取消后回到 spec 输入界面并显示 toast；manifest 与 lockfile 已恢复，已下载文件可能保留。安装响应丢失后会请求恢复结果；**核对安装状态**和重连会重试该请求。Host 已无活动请求时，**未能获取安装结果**允许检查插件列表后返回编辑。早于接收确认的取消请求会等待并自动重试；取消失败可手动重试。隐藏的任务通过 toast 通知结果，不会重新弹出对话框。
 
@@ -140,7 +142,7 @@ Host 入口通过生成的 Remote 接口暴露 `pluginRegistryProbe.fastest()`
 
 ### store
 
-`PluginManagerController` 拥有组合包视图、忙碌键、提示、安装进度和卸载确认。每次读取先问清单 Host 是否管理着 profile，再把 `listBundles` 与 `listPlugins` 合成每个组合包一份视图，其行携带存活条目的启停状态与 fiber 阶段。它合并重叠读取，在操作后、收到 `plugin-manager/changed` 时以及重连后刷新，并在销毁后忽略晚到结果。安装输出按 job id 分组。安装对话框沿 `idle → checking → starting → running → done | failed` 推进，`cancelling` 与 `applying` 按 Host 的报告呈现，安装或取消响应丢失时进入 `unconfirmed`；已确认的 `applying` 阶段不会倒退。通过 `waitForInstall` 恢复结果，无活动请求时结束为 `unknown`；checking 与所有活动阶段使用 ongoing，最终页面使用 done 或 error。检查在一个 `AbortController` 下运行，返回编辑或关闭会中止它并丢弃其结果；运行只能通过 `pluginManager.cancelInstall` 停止。关闭会隐藏任务而保留其状态。如果取消请求先于安装到达，在进度或输出确认该请求后会再次请求取消。Host 无法应用的变更、要等重启的变更、被更高层覆盖的变更，都是会自行消失的 toast。
+`PluginManagerController` 拥有组合包视图、忙碌键、提示、安装进度和卸载确认。每次读取先问清单 Host 是否管理着 profile，再把 `listBundles` 与 `listPlugins` 合成每个组合包一份视图，其行携带存活条目的启停状态与 fiber 阶段。它合并重叠读取，在操作后、收到 `plugin-manager/changed` 时以及重连后刷新，并在销毁后忽略晚到结果。安装输出按 job id 分组，对话框还保留失败步骤与这次运行的完整 Host 日志路径。安装对话框沿 `idle → checking → starting → running → done | failed` 推进，`cancelling` 与 `applying` 按 Host 的报告呈现，安装或取消响应丢失时进入 `unconfirmed`；已确认的 `applying` 阶段不会倒退。通过 `waitForInstall` 恢复结果，无活动请求时结束为 `unknown`；checking 与所有活动阶段使用 ongoing，最终页面使用 done 或 error。检查在一个 `AbortController` 下运行，返回编辑或关闭会中止它并丢弃其结果；运行只能通过 `pluginManager.cancelInstall` 停止。关闭会隐藏任务而保留其状态。如果取消请求先于安装到达，在进度或输出确认该请求后会再次请求取消。Host 无法应用的变更、要等重启的变更、被更高层覆盖的变更，都是会自行消失的 toast。
 
 ### 配置 slot
 
@@ -184,6 +186,7 @@ Host 入口通过生成的 Remote 接口暴露 `pluginRegistryProbe.fastest()`
 
 这些限制界定了管理视图的范围；它们是当前包的约束。
 
+- **只给出结束对话框那次运行的日志路径**——详情给出的是该运行的完整 Host 日志，位于 Host 文件系统；更早的换源尝试没有入口，连接远端 Host 的浏览器也可能打不开该路径。
 - **页面生命周期**——刷新浏览器会丢失跟踪的请求与输出。同一页面内重连可以恢复活动请求；Host 不保留已完成的结果。profile 文件锁串行化安装写入。
 - **只管理组合包**——没有组合包 patch 的依赖在安装前就被拒绝；profile 里已有的这类依赖不上页面，除非 profile 选中了它；加载普通插件模块仍是文件操作。
 - **行只显示阶段，不显示原因**——失败的行只显示为失败，没有 Host 的错误文本；Host 日志里有。
diff --git a/packages/client/ui-plugin-manager/package.json b/packages/client/ui-plugin-manager/package.json
index 8713ddfb0e..6cd4a7c5fc 100644
--- a/packages/client/ui-plugin-manager/package.json
+++ b/packages/client/ui-plugin-manager/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-plugin-manager",
   "description": "Plugin management for the dsh web client: the sidebar Plugins panel installs, enables, disables, retries, and composes installed plugin packages",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-plugin-manager/src/client/PluginManagerPage.module.css b/packages/client/ui-plugin-manager/src/client/PluginManagerPage.module.css
index b9516b2a10..595b38885c 100644
--- a/packages/client/ui-plugin-manager/src/client/PluginManagerPage.module.css
+++ b/packages/client/ui-plugin-manager/src/client/PluginManagerPage.module.css
@@ -25,6 +25,12 @@
   color: var(--dsw-alias-label-primary);
 }
 
+@media (max-width: 767px) {
+  .page {
+    --plugin-page-inset: 20px;
+  }
+}
+
 .page > * {
   flex: none;
   width: 100%;
diff --git a/packages/client/ui-plugin-manager/src/client/PluginManagerPage.tsx b/packages/client/ui-plugin-manager/src/client/PluginManagerPage.tsx
index 6acfce2d20..19bd838984 100644
--- a/packages/client/ui-plugin-manager/src/client/PluginManagerPage.tsx
+++ b/packages/client/ui-plugin-manager/src/client/PluginManagerPage.tsx
@@ -99,6 +99,18 @@ function AddPluginMenu({ t, disabled, openInstall, renderSlot }: {
 /** How long the list marks a package an install just enabled. */
 const HIGHLIGHT_MS = 2_400
 
+/**
+ * Whether any plugin row this bundle's patch declares is running.
+ *
+ * A default-hidden bundle's rows may run without the profile selecting it, for example through
+ * `cordis.patch.yml`; that run state is the effective enablement the lists offer.
+ * @param pkg - the bundle as the Host reports it.
+ * @returns whether at least one declared row runs.
+ */
+function rowsRunning(pkg: PackageView): boolean {
+  return pkg.rows.some(row => row.enabled)
+}
+
 /**
  * Whether the main list shows an official optional bundle: any bundle outside `MORE_BUNDLES`, and any held-back one the profile enabled.
  * @param pkg - the official bundle as the Host reports it.
@@ -932,7 +944,9 @@ function failureText(failure: InstallState['failure'], t: Translate, install?: P
   }
   if (failure.kind !== undefined) return t(FAILURE_KIND_KEYS[failure.kind])
   if (failure.code !== undefined) return managementText({ code: failure.code, diagnostic: failure.reason }, t)
-  return failure.reason === '' ? t('installFailureGeneric') : failure.reason
+  if (failure.reason !== '') return failure.reason
+  // An enabled install that failed applying the bundle names that step, never the install command it already finished.
+  return failure.stage === 'enable' && failure.enabled === true ? t('installFailedEnabling') : t('installFailureGeneric')
 }
 
 interface SubjectLines {
@@ -1317,6 +1331,8 @@ function InstallDialog({
   }
   const heading = t(phase === 'done' && install.subject?.bundled ? 'installBundledTitle' : SCREEN_TITLE_KEYS[phase])
   const pending = isInstallPending(phase)
+  // A settled screen whose install never reported a run can say the details received no terminal output.
+  const settledDetails = phase === 'failed' || phase === 'done' || phase === 'unknown'
   const cancellable = phase === 'starting' || phase === 'running' || phase === 'unconfirmed'
   const stoppable = cancellable || phase === 'failed' || phase === 'unknown'
   const failure = install.failure
@@ -1377,6 +1393,10 @@ function InstallDialog({
             <h2 className={css.wizardTitle} role={phase === 'failed' ? 'alert' : 'status'}>{heading}</h2>
             {phase === 'done' && subject?.bundled ? <p className={css.wizardSub}>{t('installBundledDescription')}</p> : null}
             {phase === 'failed' ? <p className={css.wizardSub}>{failureText(install.failure, t, install)}</p> : null}
+            {phase === 'failed' && failure?.stage === 'enable' && failure.enabled === true
+              && (failure.code !== undefined || failure.reason !== '')
+              ? <p className={css.wizardSub}>{t('installFailedEnabling')}</p>
+              : null}
             {attemptLine === null ? null : <p className={css.wizardSub}>{attemptLine}</p>}
             {uncertaintyText === null ? null : <p className={css.wizardSub} role="alert">{uncertaintyText}</p>}
             {phase === 'unknown' ? <p className={css.wizardSub}>{t('installUnknownDescription')}</p> : null}
@@ -1448,7 +1468,11 @@ function InstallDialog({
           {install.detailsOpen
             ? (
               <div className={css.detailsBody}>
-                <p className={css.installLocation}>{firstRun === undefined ? t('terminalNoOutput') : t('installLocation', { dir: firstRun.cwd })}</p>
+                {firstRun !== undefined
+                  ? <p className={css.installLocation}>{t('installLocation', { dir: firstRun.cwd })}</p>
+                  : settledDetails
+                    ? <p className={css.installLocation}>{t('installDetailsNoOutput')}</p>
+                    : null}
                 {install.runs.map((run, index) => {
                   const registry = asked?.registries[index]
                   return (
@@ -1468,6 +1492,9 @@ function InstallDialog({
                     </div>
                   )
                 })}
+                {install.logPath === null
+                  ? null
+                  : <p className={css.installLocation}>{t('installLogPath', { path: install.logPath })}</p>}
               </div>
             )
             : null}
@@ -1546,7 +1573,7 @@ export function PluginManagerPage(props: PluginManagerPageProps): ReactNode {
   // The page omits profile bundles and persistent terminals. Other installed or offered bundles and
   // unreadable selections remain manageable; Settings' Plugin list inspects the full Host inventory.
   const listed = state.packages.filter(pkg => !HIDDEN_BUNDLES.has(pkg.name)
-    && (pkg.listedByDefault !== false || pkg.enabled || pkg.installed)
+    && (pkg.listedByDefault !== false || pkg.enabled || pkg.installed || rowsRunning(pkg))
     && (pkg.installed || pkg.official || pkg.error !== undefined))
   const mine = listed.filter(pkg => !pkg.official)
   const official = listed.filter(pkg => pkg.official)
@@ -1559,7 +1586,9 @@ export function PluginManagerPage(props: PluginManagerPageProps): ReactNode {
   const more = ordered
   const loaded = state.status === 'ready' || state.status === 'error'
   const refreshing = state.refreshStatus === 'refreshing'
-  const openPkg = view.kind === 'package' || view.kind === 'row' ? listed.find(pkg => pkg.name === view.name) : undefined
+  const openPkg = view.kind === 'package' || view.kind === 'row'
+    ? listed.find(pkg => pkg.name === view.name)
+    : undefined
   const openItem = view.kind === 'item' ? ledger.items.find(item => item.id === view.id) : undefined
   const openRow = view.kind === 'row' && openPkg !== undefined ? openPkg.rows.find(row => row.rowId === view.rowId) : undefined
   const onInstalled = tab === INSTALLED_TAB
diff --git a/packages/client/ui-plugin-manager/src/client/locales.ts b/packages/client/ui-plugin-manager/src/client/locales.ts
index 98bcf3ac3e..6b31b7ffa8 100644
--- a/packages/client/ui-plugin-manager/src/client/locales.ts
+++ b/packages/client/ui-plugin-manager/src/client/locales.ts
@@ -215,11 +215,13 @@ export const zh = {
   installEnableNow: '立即启用',
   installDetailsShow: '查看安装详情',
   installDetailsHide: '收起安装详情',
+  installDetailsNoOutput: '本次安装详情没有收到终端输出',
   installVersion: '版本 {version}',
   installSubjectPath: '本地目录',
   installSubjectGit: 'Git 仓库',
   installSubjectTarball: '压缩包',
   installLocation: '安装位置：{dir}',
+  installLogPath: '完整日志：{path}',
   installRetry: '重试',
   installChangeRegistry: '更换安装源',
   installAttempt: '{previous} 不可用，正在改用 {registry} 重试（第 {index} 个源，共 {total} 个）',
@@ -236,7 +238,8 @@ export const zh = {
   installFailureIntegrity: '下载的安装包校验失败',
   installFailureTimeout: '安装超时',
   installFailurePnpmMissing: '没有找到 pnpm，无法安装',
-  installFailureGeneric: '安装过程中出错，原因见安装详情',
+  installFailureGeneric: '安装命令失败，原因见安装详情',
+  installFailedEnabling: '安装已完成，失败发生在启用插件时',
   terminalCommandLine: '命令第 {n} 行',
   terminalRunning: '运行中',
   terminalFailed: '失败',
@@ -510,11 +513,13 @@ export const en = {
   installEnableNow: 'Enable now',
   installDetailsShow: 'Show install details',
   installDetailsHide: 'Hide install details',
+  installDetailsNoOutput: 'No terminal output from this install reached the details',
   installVersion: 'Version {version}',
   installSubjectPath: 'Local directory',
   installSubjectGit: 'Git repository',
   installSubjectTarball: 'Tarball',
   installLocation: 'Installs into {dir}',
+  installLogPath: 'Full log: {path}',
   installRetry: 'Retry',
   installChangeRegistry: 'Change registry',
   installAttempt: '{previous} could not serve the package; retrying through {registry} (registry {index} of {total})',
@@ -531,7 +536,8 @@ export const en = {
   installFailureIntegrity: 'The downloaded package failed its integrity check',
   installFailureTimeout: 'The install timed out',
   installFailurePnpmMissing: 'pnpm was not found, so nothing can be installed',
-  installFailureGeneric: 'Something went wrong during the install; the details say what',
+  installFailureGeneric: 'The install command failed; the details say why',
+  installFailedEnabling: 'The install finished; enabling the plugin is what failed',
   terminalCommandLine: 'Command line {n}',
   terminalRunning: 'Running',
   terminalFailed: 'Failed',
@@ -803,11 +809,13 @@ export const ja = {
   'installEnableNow': '今すぐ有効化',
   'installDetailsShow': 'インストール詳細を表示',
   'installDetailsHide': 'インストール詳細を隠す',
+  'installDetailsNoOutput': 'このインストールのターミナル出力は詳細に届きませんでした',
   'installVersion': 'バージョン {version}',
   'installSubjectPath': 'ローカルディレクトリ',
   'installSubjectGit': 'Gitリポジトリ',
   'installSubjectTarball': 'Tarball',
   'installLocation': '{dir} にインストール',
+  'installLogPath': 'ログ全体: {path}',
   'installRetry': '再試行',
   'installChangeRegistry': 'レジストリを変更',
   'installAttempt': '{previous} ではパッケージを提供できませんでした。{registry} 経由で再試行しています（レジストリ {index}/{total}）',
@@ -824,7 +832,8 @@ export const ja = {
   'installFailureIntegrity': 'ダウンロードしたパッケージの整合性チェックに失敗しました',
   'installFailureTimeout': 'インストールがタイムアウトしました',
   'installFailurePnpmMissing': 'pnpmが見つからないため、インストールできません',
-  'installFailureGeneric': 'インストール中に問題が発生しました。詳細をご確認ください',
+  'installFailureGeneric': 'インストールコマンドに失敗しました。詳細をご確認ください',
+  'installFailedEnabling': 'インストールは完了しており、失敗したのはプラグインの有効化です',
   'terminalCommandLine': 'コマンドライン {n}',
   'terminalRunning': '実行中',
   'terminalFailed': '失敗',
@@ -1095,11 +1104,13 @@ export const es = {
   installEnableNow: 'Habilitar ahora',
   installDetailsShow: 'Mostrar detalles de instalación',
   installDetailsHide: 'Ocultar detalles de instalación',
+  installDetailsNoOutput: 'La salida de terminal de esta instalación no llegó a los detalles',
   installVersion: 'Versión {version}',
   installSubjectPath: 'directorio local',
   installSubjectGit: 'repositorio git',
   installSubjectTarball: 'bola de tar',
   installLocation: 'Se instala en {dir}',
+  installLogPath: 'Registro completo: {path}',
   installRetry: 'Reintentar',
   installChangeRegistry: 'Cambiar registro',
   installAttempt: '{previous} no pudo entregar el paquete; reintentando a través de {registry} (registro {index} de {total})',
@@ -1116,7 +1127,8 @@ export const es = {
   installFailureIntegrity: 'El paquete descargado no pasó la verificación de integridad',
   installFailureTimeout: 'La instalación expiró',
   installFailurePnpmMissing: 'No se encontró pnpm, por lo que no se puede instalar nada.',
-  installFailureGeneric: 'Algo salió mal durante la instalación; los detalles dicen lo que',
+  installFailureGeneric: 'El comando de instalación falló; los detalles dicen por qué',
+  installFailedEnabling: 'La instalación finalizó; lo que falló fue la activación del complemento',
   terminalCommandLine: 'Línea de comando {n}',
   terminalRunning: 'corriendo',
   terminalFailed: 'Fallido',
@@ -1387,11 +1399,13 @@ export const fr = {
   installEnableNow: 'Activer maintenant',
   installDetailsShow: "Afficher les détails de l'installation",
   installDetailsHide: "Masquer les détails de l'installation",
+  installDetailsNoOutput: "Aucune sortie de terminal de cette installation n'est parvenue aux détails",
   installVersion: 'Version {version}',
   installSubjectPath: 'Annuaire local',
   installSubjectGit: 'Dépôt Git',
   installSubjectTarball: 'Tarball',
   installLocation: "S'installe dans {dir}",
+  installLogPath: 'Journal complet : {path}',
   installRetry: 'Réessayer',
   installChangeRegistry: 'Changer de registre',
   installAttempt: "{previous} n'a pas pu servir le package ; nouvelle tentative via {registry} (registre {index} de {total})",
@@ -1408,7 +1422,8 @@ export const fr = {
   installFailureIntegrity: "Le package téléchargé a échoué à sa vérification d'intégrité",
   installFailureTimeout: "L'installation a expiré",
   installFailurePnpmMissing: "pnpm n'a pas été trouvé, donc rien ne peut être installé",
-  installFailureGeneric: "Quelque chose s'est mal passé lors de l'installation ; les détails disent quoi",
+  installFailureGeneric: "La commande d'installation a échoué ; les détails expliquent pourquoi",
+  installFailedEnabling: "L'installation est terminée ; c'est l'activation du plugin qui a échoué",
   terminalCommandLine: 'Ligne de commande {n}',
   terminalRunning: 'Courir',
   terminalFailed: 'Échec',
@@ -1679,11 +1694,13 @@ export const de = {
   installEnableNow: 'Jetzt aktivieren',
   installDetailsShow: 'Installationsdetails anzeigen',
   installDetailsHide: 'Installationsdetails ausblenden',
+  installDetailsNoOutput: 'Die Terminalausgabe dieser Installation hat die Details nicht erreicht',
   installVersion: 'Version {version}',
   installSubjectPath: 'Lokales Verzeichnis',
   installSubjectGit: 'Git-Repository',
   installSubjectTarball: 'Tarball',
   installLocation: 'Wird in {dir} installiert',
+  installLogPath: 'Vollständiges Protokoll: {path}',
   installRetry: 'Erneut versuchen',
   installChangeRegistry: 'Registrierung ändern',
   installAttempt: '{previous} konnte das Paket nicht bereitstellen; erneuter Versuch über {registry} (Registrierung {index} von {total})',
@@ -1700,7 +1717,8 @@ export const de = {
   installFailureIntegrity: 'Das heruntergeladene Paket hat die Integritätsprüfung nicht bestanden',
   installFailureTimeout: 'Bei der Installation ist eine Zeitüberschreitung aufgetreten',
   installFailurePnpmMissing: 'pnpm wurde nicht gefunden, daher kann nichts installiert werden',
-  installFailureGeneric: 'Bei der Installation ist ein Fehler aufgetreten. Die Details sagen was',
+  installFailureGeneric: 'Der Installationsbefehl ist fehlgeschlagen. Die Details sagen warum',
+  installFailedEnabling: 'Die Installation wurde abgeschlossen; das Aktivieren des Plugins ist fehlgeschlagen',
   terminalCommandLine: 'Befehlszeile {n}',
   terminalRunning: 'Laufen',
   terminalFailed: 'Fehlgeschlagen',
@@ -1971,11 +1989,13 @@ export const ru = {
   installEnableNow: 'Включить сейчас',
   installDetailsShow: 'Показать детали установки',
   installDetailsHide: 'Скрыть сведения об установке',
+  installDetailsNoOutput: 'Вывод терминала этой установки не дошёл до подробностей',
   installVersion: 'Версия {version}',
   installSubjectPath: 'Локальный каталог',
   installSubjectGit: 'Git-репозиторий',
   installSubjectTarball: 'Тарбол',
   installLocation: 'Устанавливается в {dir}',
+  installLogPath: 'Полный журнал: {path}',
   installRetry: 'Повторить',
   installChangeRegistry: 'Изменить реестр',
   installAttempt: '{previous} не смог обслужить пакет; повторная попытка через {registry} (реестр {index} из {total})',
@@ -1992,7 +2012,8 @@ export const ru = {
   installFailureIntegrity: 'Загруженный пакет не прошел проверку целостности.',
   installFailureTimeout: 'Время установки истекло',
   installFailurePnpmMissing: 'pnpm не найден, поэтому ничего установить невозможно',
-  installFailureGeneric: 'Во время установки что-то пошло не так; детали говорят о чем',
+  installFailureGeneric: 'Команда установки завершилась ошибкой; детали объясняют причину',
+  installFailedEnabling: 'Установка завершена; ошибка возникла при включении плагина',
   terminalCommandLine: 'Командная строка {n}',
   terminalRunning: 'Бег',
   terminalFailed: 'Не удалось',
@@ -2263,11 +2284,13 @@ export const pt = {
   installEnableNow: 'Ativar agora',
   installDetailsShow: 'Mostrar detalhes da instalação',
   installDetailsHide: 'Ocultar detalhes de instalação',
+  installDetailsNoOutput: 'A saída de terminal desta instalação não chegou aos detalhes',
   installVersion: 'Versão {version}',
   installSubjectPath: 'Diretório local',
   installSubjectGit: 'Repositório Git',
   installSubjectTarball: 'Tarball',
   installLocation: 'Instala em {dir}',
+  installLogPath: 'Registro completo: {path}',
   installRetry: 'Tentar novamente',
   installChangeRegistry: 'Alterar registro',
   installAttempt: '{previous} não pôde entregar o pacote; tentando novamente através de {registry} (registro {index} de {total})',
@@ -2284,7 +2307,8 @@ export const pt = {
   installFailureIntegrity: 'O pacote baixado falhou na verificação de integridade',
   installFailureTimeout: 'A instalação expirou',
   installFailurePnpmMissing: 'pnpm não foi encontrado, então nada pode ser instalado',
-  installFailureGeneric: 'Algo deu errado durante a instalação; os detalhes dizem o que',
+  installFailureGeneric: 'O comando de instalação falhou; os detalhes explicam por que',
+  installFailedEnabling: 'A instalação foi concluída; a falha ocorreu ao ativar o plugin',
   terminalCommandLine: 'Linha de comando {n}',
   terminalRunning: 'Correndo',
   terminalFailed: 'Falha',
diff --git a/packages/client/ui-plugin-manager/src/client/manager-store.ts b/packages/client/ui-plugin-manager/src/client/manager-store.ts
index b4b982ebf5..2ca4f1cdb6 100644
--- a/packages/client/ui-plugin-manager/src/client/manager-store.ts
+++ b/packages/client/ui-plugin-manager/src/client/manager-store.ts
@@ -139,7 +139,7 @@ export type InstallSubject = Extract<PluginSpecInspection, { status: 'accepted'
   readonly spec: string
   /** The installation already provides this bundle; only explicit enablement remains. */
   readonly bundled?: true
-  /** Present for a catalog install or update: desired selection after installation. */
+  /** Explicit selection for a catalog toggle or update; typed installation offers enablement afterward. */
   readonly selection?: boolean
   /** Save an exact dependency version through the generic installer. */
   readonly saveExact?: boolean
@@ -253,6 +253,11 @@ export interface InstallState {
   readonly runs: readonly InstallRun[]
   /** Whether the run's command and output are unfolded, including after reopening. */
   readonly detailsOpen: boolean
+  /**
+   * The complete Host log file of the run that settled the dialog, which the details point
+   * to for diagnostics the captured terminal output does not carry; null until a run settles.
+   */
+  readonly logPath: string | null
   /** The bundle ready for enablement, from an install run or the installation; catalog operations carry their selection. */
   readonly installed: string | null
   /** The available bundle's manifest version; null when undeclared. */
@@ -275,6 +280,10 @@ export interface InstallState {
     /** The packages an `incompatible-version` refusal names. */
     readonly incompatible?: readonly IncompatiblePlugin[]
     readonly kind?: PluginInstallFailureKind
+    /** The step the failed change reached; `enable` means the installation finished and applying the bundle failed. */
+    readonly stage?: ChangeResult['stage']
+    /** Whether the failed change also asked to enable the installed bundle; an enable-stage sentence needs both. */
+    readonly enabled?: boolean
     /** What the last failed run could not reach, as the Host attributed it: the registry, or the spec's own host. */
     readonly failedAt?: 'registry' | 'spec-host'
     readonly pendingBuilds?: readonly string[]
@@ -496,16 +505,18 @@ class RemoteAnswerError extends Error {
   }
 }
 
-/** The dialog's reading of a failed change: the Host's code and diagnostic, and the run's classified failure. */
+/** The dialog's reading of a failed change: the Host's code and diagnostic, the step it reached, and the run's classified failure. */
 function failureOf(
-  error: ManagementError | undefined, kind: PluginInstallFailureKind | undefined, pendingBuilds?: readonly string[],
-  failedAt?: ChangeResult['failedAt'],
+  error: ManagementError | undefined, kind: PluginInstallFailureKind | undefined, pendingBuilds: readonly string[] | undefined,
+  failedAt: ChangeResult['failedAt'], stage: ChangeResult['stage'], enabled: ChangeResult['enabled'],
 ): NonNullable<InstallState['failure']> {
   return {
     reason: error?.diagnostic ?? '',
     ...error === undefined ? {} : { code: error.code },
     ...error?.incompatible === undefined ? {} : { incompatible: error.incompatible },
     ...kind === undefined ? {} : { kind },
+    stage,
+    ...enabled === undefined ? {} : { enabled },
     ...failedAt === undefined ? {} : { failedAt },
     ...pendingBuilds === undefined || pendingBuilds.length === 0 ? {} : { pendingBuilds },
   }
@@ -588,7 +599,7 @@ export function sortPackages(packages: readonly PackageView[]): PackageView[] {
 
 const IDLE_INSTALL: InstallState = {
   open: false, spec: '', registries: null, registry: OFFICIAL_REGISTRY, registryOpen: false, registryError: false, attempts: null,
-  phase: 'idle', inputError: null, subject: null, runs: [], detailsOpen: false,
+  phase: 'idle', inputError: null, subject: null, runs: [], detailsOpen: false, logPath: null,
   installed: null, installedVersion: null, restartRequired: false, failure: null, approvedBuilds: [], enabling: false,
 }
 
@@ -997,8 +1008,9 @@ export class PluginManagerController {
   }
 
   /**
-   * Fold a chunk belonging to this installation into its pnpm command.
-   * A final chunk may arrive after the install answer and still updates an existing run.
+   * Fold a chunk belonging to this installation into its run. The install answer and the log travel over
+   * separate transports, so the run that ended the installation can arrive after its answer: a settled
+   * dialog keeps that run too, with the outcome's exit code when the chunk carries none of its own.
    * @param chunk - the chunk the Host forwarded.
    */
   appendLog(chunk: PluginInstallLogChunk): void {
@@ -1009,10 +1021,14 @@ export class PluginManagerController {
       this.installProgress({ requestId: install.requestId, phase: 'installing' })
     }
     const index = install.runs.findIndex(run => run.jobId === chunk.jobId)
-    if (index === -1 && !isInstallPending(install.phase)) return
     const settled = chunk.exitCode === undefined ? {} : { exitCode: chunk.exitCode }
+    const settledRun = install.phase === 'failed' || install.phase === 'done'
+    if (index === -1 && !isInstallPending(install.phase) && !settledRun) return
     const runs = index === -1
-      ? [...install.runs, { jobId: chunk.jobId, command: chunk.argv.join(' '), cwd: chunk.cwd, output: chunk.text, ...settled }]
+      ? [...install.runs, {
+        jobId: chunk.jobId, command: chunk.argv.join(' '), cwd: chunk.cwd, output: chunk.text,
+        ...settledRun && chunk.exitCode === undefined ? { exitCode: null } : settled,
+      }]
       : install.runs.map((run, at) => at === index ? { ...run, output: run.output + chunk.text, ...settled } : run)
     this.patchInstall({ runs })
   }
@@ -1164,12 +1180,21 @@ export class PluginManagerController {
     const install = state.install
     const spec = install.spec.trim()
     if (install.phase === 'checking' || isInstallPending(install.phase) || spec === '') return
+    const listed = state.packages.find(pkg => pkg.name === spec)
+    let catalogSubject = install.subject?.selection === undefined || install.subject.spec !== spec ? undefined : install.subject
+    if (listed?.availability === 'missing' && listed.installTarget !== undefined
+      && listed.error === undefined && catalogSubject === undefined) {
+      const target = listed.installTarget
+      const local = target.spec.startsWith('link:')
+      catalogSubject = {
+        status: 'accepted', kind: local ? 'path' : 'registry', name: listed.name, version: target.version, bundle: true,
+        spec: target.spec, registry: null, ...local ? {} : { saveExact: true },
+      }
+    }
     if (this.ctx.get('productAnalytics')?.enabled) {
       this.analyticsAttempt = { input: sanitizeInstallInput(spec), started: Date.now() }
       this.ctx.get('productAnalytics')?.track('plugin_install_click', { input_value: sanitizeInstallInput(spec) })
     }
-    const listed = state.packages.find(pkg => pkg.name === spec)
-    const catalogSubject = install.subject?.selection === undefined || install.subject.spec !== spec ? undefined : install.subject
     if (listed?.availability === 'installation' && listed.optional && listed.listedByDefault === false
       && !listed.enabled && listed.error === undefined && listed.readOnlyReason === undefined) {
       this.abortInspect()
@@ -1199,7 +1224,7 @@ export class PluginManagerController {
     this.inspectAbort = controller
     this.patchInstall({
       phase: 'checking', inputError: null, subject: catalogSubject ?? null, runs: [], detailsOpen: false, attempts: null, registryOpen: false,
-      installed: null, installedVersion: null, restartRequired: false, failure: null, approvedBuilds: [],
+      installed: null, installedVersion: null, restartRequired: false, failure: null, approvedBuilds: [], logPath: null,
     })
     const read = this.registryRead
     if (read !== undefined && choice === read.choice && read.done !== undefined) {
@@ -1242,7 +1267,10 @@ export class PluginManagerController {
     const requestId = randomUUID() as PluginInstallRequestId
     const request: InstallRequest = { requestId, acknowledged: false, replyLost: false, recovering: false }
     this.request = request
-    this.patchInstall({ phase: 'starting', requestId, subject, runs: [], attempts: null, failure: null, installed: null, installedVersion: null, approvedBuilds: [] })
+    this.patchInstall({
+      phase: 'starting', requestId, subject, runs: [], attempts: null, failure: null, installed: null, installedVersion: null,
+      approvedBuilds: [], logPath: null,
+    })
     // The Host announces `plugin-manager/changed` while the run is still on
     // the wire, and every such event reads again; those reads must not cancel
     // the run's settlement.
@@ -1298,7 +1326,8 @@ export class PluginManagerController {
       const packages = result.packageResult
       this.patchInstall({
         phase: 'failed', runs: settledRuns(runs, packages?.exitCode ?? null),
-        failure: failureOf(result.error, packages?.kind, result.pendingBuilds, result.failedAt),
+        failure: failureOf(result.error, packages?.kind, result.pendingBuilds, result.failedAt, result.stage, result.enabled),
+        logPath: result.packageResult?.logPath ?? null,
         ...asked,
       })
     } else {
@@ -1308,6 +1337,7 @@ export class PluginManagerController {
         installedVersion: result.version ?? null,
         restartRequired: result.application === 'restart-required',
         ...result.restartReason === undefined ? {} : { restartReason: result.restartReason },
+        logPath: result.packageResult?.logPath ?? null,
         approvedBuilds: result.approvedBuilds ?? [],
         ...asked,
       })
diff --git a/packages/client/ui-plugin-manager/tests/browser-plugin.client.spec.tsx b/packages/client/ui-plugin-manager/tests/browser-plugin.client.spec.tsx
index 2a6f019ad4..9069ce355b 100644
--- a/packages/client/ui-plugin-manager/tests/browser-plugin.client.spec.tsx
+++ b/packages/client/ui-plugin-manager/tests/browser-plugin.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import assert from 'node:assert/strict'
 import { Context, Service } from '@deepseek-ai/cordis'
 import { afterEach, beforeEach, describe, expect, it, onTestFinished, vi } from 'vitest'
@@ -253,7 +254,7 @@ describe('ui-plugin-manager browser plugin', () => {
     const unread = () => { throw new Error('The sidebar icon must not read application state') }
     const glyph = render(<PluginsPanelIcon size={18} active={false}
       usePanelInfo={unread} useSessions={unread} useSessionStatus={unread} useSessionRetainInfo={unread}
-      useWorkspaces={unread} useResource={unread} {...allowAllAccess} />)
+      useWorkspaces={unread} useContextMenu={contextMenuHook()} useResource={unread} {...allowAllAccess} />)
     expect(glyph.container.querySelector('svg')?.getAttribute('width')).toBe('18')
     expect(icon.options).toMatchObject({ id: PANEL_ID, order: 0 })
     expect(icon.locale).toBe(NS)
diff --git a/packages/client/ui-plugin-manager/tests/components.client.spec.tsx b/packages/client/ui-plugin-manager/tests/components.client.spec.tsx
index 041d5d2a39..adacb15d71 100644
--- a/packages/client/ui-plugin-manager/tests/components.client.spec.tsx
+++ b/packages/client/ui-plugin-manager/tests/components.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { ConfigPageForm } from '../src/client/slot-contract.ts'
 import { act, cleanup, fireEvent, render, screen, within } from '@testing-library/react'
 import { afterEach, beforeEach, describe, expect, it, onTestFinished, vi } from 'vitest'
@@ -70,7 +71,7 @@ const MIRROR_OPTION = `${en.registryNpmmirror} registry.npmmirror.com`
 
 const IDLE_INSTALL: InstallState = {
   open: false, spec: '', registries: null, registry: { kind: 'offered', registry: null }, registryOpen: false, registryError: false, attempts: null,
-  phase: 'idle', inputError: null, subject: null, runs: [], detailsOpen: false,
+  phase: 'idle', inputError: null, subject: null, runs: [], detailsOpen: false, logPath: null,
   installed: null, installedVersion: null, restartRequired: false, failure: null, approvedBuilds: [], enabling: false,
 }
 
@@ -159,6 +160,7 @@ function renderTab(
     useSessionRetainInfo: unusedStandardHook,
     useResource: unusedStandardHook,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
   }
   const navigation = createNavigationStore().create()
   const props: PluginManagerPageProps = {
@@ -803,6 +805,60 @@ describe('PluginManagerPage', () => {
     expect(b.actions.uninstall).not.toHaveBeenCalled()
   })
 
+  it('keeps a shipped bundle out of both lists until one of its declared rows runs', () => {
+    const hidden = '@deepseek-ai/dsh-experimental-liveshare'
+    const shown = '@deepseek-ai/dsh-experimental-agent-team-profile'
+    const offer = (rows: readonly PackageRow[]): PackageView => pkg({
+      name: hidden, official: true, installed: false, optional: true, removable: false, enabled: false, listedByDefault: false, rows,
+    })
+    const other = pkg({ name: shown, installed: false, optional: true, removable: false, enabled: false })
+    const b = renderTab({ packages: [offer([]), other] })
+    // The default installation carries the package but composes none of its rows: neither the main
+    // list nor the More list offers a card for it.
+    expect(document.querySelector(`[data-plugin-package="${hidden}"]`)).toBeNull()
+    fireEvent.click(screen.getByRole('button', { name: en.moreAction }))
+    expect(screen.getByRole('heading', { name: en.moreTitle, level: 1 })).toBeTruthy()
+    expect(document.querySelector(`[data-plugin-package="${hidden}"]`)).toBeNull()
+    fireEvent.click(screen.getByRole('button', { name: en.backToList }))
+
+    // A row inserted through cordis.patch.yml runs while the profile selects no such bundle: the card
+    // is listed as experimental exactly like a bundle the profile selected.
+    b.set({
+      packages: [
+        offer([row({ rowId: 'liveshare-viewer-declarations', moduleName: `${hidden}/viewer-declarations` })]),
+        other,
+      ],
+    })
+    const extensions = document.querySelector('[data-plugin-group="extensions"]') as HTMLElement
+    expect(within(extensions).getAllByRole('listitem').map(card => card.getAttribute('data-plugin-package')))
+      .toEqual([shown, hidden])
+
+    // Disabling that row takes the card away again, as removing it would.
+    b.set({
+      packages: [
+        offer([row({
+          rowId: 'liveshare-viewer-declarations', moduleName: `${hidden}/viewer-declarations`,
+          enabled: false, phase: null,
+        })]),
+        other,
+      ],
+    })
+    expect(document.querySelector(`[data-plugin-package="${hidden}"]`)).toBeNull()
+  })
+
+  it('does not open a default-hidden bundle by id while its card is hidden', () => {
+    const hidden = '@deepseek-ai/dsh-experimental-liveshare'
+    const b = renderTab({
+      packages: [pkg({
+        name: hidden, official: true, installed: false, optional: true, removable: false, enabled: false,
+        listedByDefault: false,
+      })],
+    })
+    expect(document.querySelector(`[data-plugin-package="${hidden}"]`)).toBeNull()
+    act(() => { b.navigation.actions.setView({ kind: 'package', name: hidden }) })
+    expect(document.querySelector(`[data-plugin-detail="${hidden}"]`)).toBeNull()
+  })
+
   it.each([false, true])('shows an empty list for hidden bundles with errors and installed=%s', (installed) => {
     renderTab({
       packages: ['@deepseek-ai/dsh-base', '@deepseek-ai/dsh-web-app', '@deepseek-ai/dsh-experimental-terminal-bundle'].map(name => pkg({
@@ -1802,9 +1858,9 @@ describe('PluginManagerPage', () => {
     expect(screen.queryByText('line 8')).toBeNull()
     fireEvent.click(screen.getByRole('button', { name: en.terminalExpandAria.replace('{n}', '3') }))
     expect(screen.getByText('line 8')).toBeTruthy()
-    // Before the first chunk there is no location to name.
+    // Before the first chunk there is no location to name, and a running install claims no output yet.
     set({ install: { ...IDLE_INSTALL, open: true, spec: 'dsh-x', phase: 'running', subject, detailsOpen: true } })
-    expect(screen.getByText(en.terminalNoOutput)).toBeTruthy()
+    expect(screen.queryByText(en.installDetailsNoOutput)).toBeNull()
     // Cancel and the back control each ask the Host to stop the run; the close control asks too, and closes once the Host confirms.
     fireEvent.click(screen.getByRole('button', { name: en.installCancel }))
     fireEvent.click(screen.getByRole('button', { name: en.installCancelAndEdit }))
@@ -2006,6 +2062,35 @@ describe('PluginManagerPage', () => {
     expect(screen.getByText(en.installSubjectTarball)).toBeTruthy()
   })
 
+  it('names an enable-stage failure and points the details at the complete Host log', () => {
+    const subject = { spec: 'dsh-x', status: 'accepted', kind: 'registry', name: 'dsh-x', bundle: true, registry: null } as const
+    const logPath = '/home/u/.dsh/profiles/web/plugin-manager/runs/install.log'
+    const enabling: InstallState = {
+      ...IDLE_INSTALL, open: true, spec: 'dsh-x', phase: 'failed', subject, detailsOpen: true, logPath,
+      failure: { reason: 'activation refused', stage: 'enable', enabled: true },
+    }
+    const { set } = renderTab({ install: enabling })
+    // The enabled bundle could not be applied, so the screen separates the finished install from the failure.
+    expect(screen.getByText(en.installFailedEnabling)).toBeTruthy()
+    // No terminal chunk reached the dialog; the details say what the dialog received, not what the run printed.
+    expect(screen.getByText(en.installDetailsNoOutput)).toBeTruthy()
+    // They still point at the Host's complete log for the run that settled the dialog.
+    expect(screen.getByText(en.installLogPath.replace('{path}', logPath))).toBeTruthy()
+    // A failure of the install itself names no finished install.
+    set({ install: { ...enabling, failure: { reason: 'activation refused', stage: 'install', enabled: true } } })
+    expect(screen.queryByText(en.installFailedEnabling)).toBeNull()
+    // An install that never asked to enable the bundle cannot have failed enabling it.
+    set({ install: { ...enabling, failure: { reason: 'activation refused', stage: 'enable', enabled: false } } })
+    expect(screen.queryByText(en.installFailedEnabling)).toBeNull()
+    // Without a reason the sentence is the only line: it names the step instead of the install command it finished.
+    set({ install: { ...enabling, failure: { reason: '', stage: 'enable', enabled: true } } })
+    expect(screen.getAllByText(en.installFailedEnabling)).toHaveLength(1)
+    expect(screen.queryByText(en.installFailureGeneric)).toBeNull()
+    // Without a settled run's log the details offer no path.
+    set({ install: { ...enabling, logPath: null } })
+    expect(screen.queryByText(en.installLogPath.replace('{path}', logPath))).toBeNull()
+  })
+
   it.each(['network', 'timeout'] as const)('shows GitHub recovery only after a %s failure and returns to package input', (kind) => {
     const subject = { spec: 'github:a/b', status: 'accepted', kind: 'git', bundle: null, registry: null, host: 'github.com' } as const
     const failed: InstallState = {
diff --git a/packages/client/ui-plugin-manager/tests/manager-store.client.spec.ts b/packages/client/ui-plugin-manager/tests/manager-store.client.spec.ts
index 47dc13c330..67b95bded7 100644
--- a/packages/client/ui-plugin-manager/tests/manager-store.client.spec.ts
+++ b/packages/client/ui-plugin-manager/tests/manager-store.client.spec.ts
@@ -48,9 +48,11 @@ const INSPECTED = { status: 'accepted' as const, kind: 'registry' as const, name
 const APPLIED: ChangeResult = { changed: true, application: 'applied', stage: 'enable', target: 'dsh-better-sidebar' }
 
 /** A change the Host could not apply, with the refusal it names. */
-function failed(error?: ManagementError, packageResult?: ChangeResult['packageResult']): ChangeResult {
+function failed(
+  error?: ManagementError, packageResult?: ChangeResult['packageResult'], facts: Pick<ChangeResult, 'stage' | 'enabled'> = { stage: 'install' },
+): ChangeResult {
   return {
-    changed: false, application: 'failed', stage: 'enable', target: 'dsh-better-sidebar',
+    changed: false, application: 'failed', target: 'dsh-better-sidebar', ...facts,
     ...error === undefined ? {} : { error }, ...packageResult === undefined ? {} : { packageResult },
   }
 }
@@ -655,13 +657,14 @@ describe('PluginManagerController', () => {
     gate.resolve(ok({ ...APPLIED, bundle: 'dsh-new', version: '1.0.0' }))
     await vi.waitFor(() => { expect(state().install.phase).toBe('done') })
     expect(state().install).toMatchObject({ installed: 'dsh-new', installedVersion: '1.0.0', restartRequired: false, detailsOpen: true })
-    // The finished install settled its run; a trailing last chunk still lands
-    // on it, while a chunk for a run the dialog never saw is dropped.
+    // The answer and the log travel over separate transports: the settled dialog keeps a trailing chunk of a
+    // known run, and a run whose first chunk arrived after the answer settles with the outcome, not as running.
     controller.appendLog({ requestId, jobId: 'j1', argv, cwd: '/p', stream: 'stdout', text: '', exitCode: 0 })
-    controller.appendLog({ requestId, jobId: 'j3', argv, cwd: '/p', stream: 'stdout', text: 'stray' })
+    controller.appendLog({ requestId, jobId: 'j3', argv, cwd: '/p', stream: 'stdout', text: 'late diagnostic' })
     expect(state().install.runs).toEqual([
       { jobId: 'j1', command: 'pnpm add dsh-new', cwd: '/p', output: 'Progress\nDone\n', exitCode: 0 },
       { jobId: 'j2', command: 'pnpm remove lib', cwd: '/p', output: '- lib\n', exitCode: 0 },
+      { jobId: 'j3', command: 'pnpm add dsh-new', cwd: '/p', output: 'late diagnostic', exitCode: null },
     ])
     await vi.waitFor(() => { expect(plugins.listBundles).toHaveBeenCalledTimes(2) })
     // Cancelling from the finished screen does nothing, nor does the Host's late progress; a new spec after it starts over.
@@ -815,7 +818,7 @@ describe('PluginManagerController', () => {
     face.editInstallSpec('dsh-x')
     face.runInstall()
     await vi.waitFor(() => { expect(state().install.phase).toBe('failed') })
-    expect(state().install.failure).toEqual({ reason: 'ERR', code: 'operation-error', kind: 'network' })
+    expect(state().install.failure).toEqual({ reason: 'ERR', code: 'operation-error', kind: 'network', stage: 'install' })
     face.cancelInstall()
     expect(state().install).toMatchObject({ open: true, phase: 'idle', spec: 'dsh-x', failure: null, subject: null })
   })
@@ -1227,7 +1230,7 @@ describe('PluginManagerController', () => {
       pendingBuilds: ['native'],
     }))
     await vi.waitFor(() => { expect(state().install.phase).toBe('failed') })
-    expect(state().install.failure).toEqual({ reason: 'ERR_PNPM_IGNORED_BUILDS', code: 'operation-error', kind: 'build-blocked', pendingBuilds: ['native'] })
+    expect(state().install.failure).toEqual({ reason: 'ERR_PNPM_IGNORED_BUILDS', code: 'operation-error', kind: 'build-blocked', pendingBuilds: ['native'], stage: 'install' })
     // The retry keeps the subject the check produced and carries the approved names under a new request id.
     face.approveBuildsAndRetry()
     const second = await started()
@@ -1301,7 +1304,7 @@ describe('PluginManagerController', () => {
     answer(ok(failed({ code: 'operation-error', diagnostic: 'ERR_PNPM' }, { exitCode: 1, output: 'ERR_PNPM', truncated: false, logPath: '/l', kind: 'network' })))
     await vi.waitFor(() => { expect(state().install.phase).toBe('failed') })
     expect(state().install.runs).toEqual([])
-    expect(state().install.failure).toEqual({ reason: 'ERR_PNPM', code: 'operation-error', kind: 'network' })
+    expect(state().install.failure).toEqual({ reason: 'ERR_PNPM', code: 'operation-error', kind: 'network', stage: 'install' })
     expect(state().install.subject).toEqual({ spec: 'x', ...INSPECTED })
     // A lost answer cannot establish whether the Host stopped the process.
     await installing()
@@ -1329,23 +1332,80 @@ describe('PluginManagerController', () => {
       { jobId: 'j', command: 'pnpm add x', cwd: '/p', output: 'partial', exitCode: 0 },
       { jobId: 'k', command: 'pnpm add x', cwd: '/p', output: 'open', exitCode: null },
     ])
-    expect(state().install.failure).toEqual({ reason: '', code: 'not-bundle' })
+    expect(state().install.failure).toEqual({ reason: '', code: 'not-bundle', stage: 'install' })
     // An incompatibility keeps the packages it names.
     await installing()
     answer(ok(failed({ code: 'incompatible-version', incompatible: [INCOMPATIBLE] })))
     await vi.waitFor(() => { expect(state().install.phase).toBe('failed') })
-    expect(state().install.failure).toEqual({ reason: '', code: 'incompatible-version', incompatible: [INCOMPATIBLE] })
+    expect(state().install.failure).toEqual({ reason: '', code: 'incompatible-version', incompatible: [INCOMPATIBLE], stage: 'install' })
     // A failure the Host does not explain has neither code nor words.
     await installing()
     answer(ok(failed()))
     await vi.waitFor(() => { expect(state().install.phase).toBe('failed') })
-    expect(state().install.failure).toEqual({ reason: '' })
+    expect(state().install.failure).toEqual({ reason: '', stage: 'install' })
     expect(plugins.installBundle).toHaveBeenCalledTimes(6)
     // Editing the spec after a failure starts over too.
     face.editInstallSpec('y')
     expect(state().install).toMatchObject({ phase: 'idle', spec: 'y', runs: [], failure: null })
   })
 
+  it('keeps the run whose first chunk arrives after the failed answer', async () => {
+    const { face, state, controller } = bench({
+      installBundle: vi.fn().mockResolvedValueOnce(ok(failed(
+        { code: 'operation-error', diagnostic: 'offline' },
+        { exitCode: 1, output: 'fatal: unable to access', truncated: false, logPath: '/l', kind: 'network' },
+      ))),
+    })
+    face.openInstall()
+    face.editInstallSpec('https://github.com/a/b.git')
+    face.runInstall()
+    await vi.waitFor(() => { expect(state().install.phase).toBe('failed') })
+    const requestId = state().install.requestId as PluginInstallRequestId
+    expect(state().install.runs).toEqual([])
+    // The check's only chunk can arrive after the answer; the settled dialog still shows it and its log.
+    const argv = ['git', '-c', 'credential.helper=', 'ls-remote', '--', 'https://github.com/a/b.git', 'HEAD']
+    controller.appendLog({ requestId, jobId: 'g1', argv, cwd: '/p', stream: 'stderr', text: 'fatal: unable to access', exitCode: 1 })
+    expect(state().install.runs).toEqual([
+      { jobId: 'g1', command: argv.join(' '), cwd: '/p', output: 'fatal: unable to access', exitCode: 1 },
+    ])
+    // A chunk of another installation still is not this dialog's.
+    controller.appendLog({ requestId: 'other' as PluginInstallRequestId, jobId: 'g2', argv, cwd: '/p', stream: 'stderr', text: 'stray', exitCode: 1 })
+    expect(state().install.runs).toHaveLength(1)
+  })
+
+  it('keeps the step a failed install reached and the complete Host log it settled with', async () => {
+    const retry = deferred<ReturnType<typeof ok<ChangeResult>>>()
+    const failedLog = '/var/log/dsh/plugin-manager/install-failed.log'
+    const doneLog = '/var/log/dsh/plugin-manager/install-done.log'
+    const { face, state, plugins, started } = bench({
+      installBundle: vi.fn()
+        .mockResolvedValueOnce(ok(failed(
+          { code: 'operation-error', diagnostic: 'activation refused' },
+          { exitCode: 0, output: 'installed', truncated: false, logPath: failedLog },
+          { stage: 'enable', enabled: true },
+        )))
+        .mockReturnValueOnce(retry.promise),
+    })
+    face.openInstall()
+    face.editInstallSpec('dsh-x')
+    face.runInstall()
+    await vi.waitFor(() => { expect(state().install.phase).toBe('failed') })
+    // The Host laid the failure at activation, and the details keep the run's complete log.
+    expect(state().install.failure).toEqual({ reason: 'activation refused', code: 'operation-error', stage: 'enable', enabled: true })
+    expect(state().install.logPath).toBe(failedLog)
+    // Retrying forgets the settled run's log until the next answer names its own.
+    face.runInstall()
+    await started()
+    expect(state().install.logPath).toBeNull()
+    retry.resolve(ok({
+      ...APPLIED, bundle: 'dsh-x',
+      packageResult: { exitCode: 0, output: '', truncated: false, logPath: doneLog },
+    }))
+    await vi.waitFor(() => { expect(state().install.phase).toBe('done') })
+    expect(state().install.logPath).toBe(doneLog)
+    expect(plugins.installBundle).toHaveBeenCalledTimes(2)
+  })
+
   it('drops every late settlement after disposal', async () => {
     const enableGate = deferred<ReturnType<typeof ok<ChangeResult>>>()
     const installGate = deferred<ReturnType<typeof ok<ChangeResult>>>()
@@ -1919,6 +1979,23 @@ const CATALOG: BundleInfo = {
   installTarget: { spec: '@deepseek-ai/dsh-subagent-codex@2.0.0', version: '2.0.0' },
 }
 
+it.each(['registry', 'source'] as const)('installs a typed default-hidden Official name using its %s target', async (mode) => {
+  const name = '@deepseek-ai/dsh-cua-bundle'
+  const spec = mode === 'source' ? 'link:/workspace/cua-bundle' : `${name}@2.0.0`
+  const entry = { ...CATALOG, name, listedByDefault: false, installTarget: { spec, version: '2.0.0' } }
+  const { controller, plugins, face, state } = bench({ listBundles: vi.fn().mockResolvedValue(ok([entry])) })
+  await controller.load()
+  face.openInstall()
+  face.editInstallSpec(name)
+  face.runInstall()
+  await vi.waitFor(() => { expect(plugins.installBundle).toHaveBeenCalledOnce() })
+  expect(plugins.inspect).not.toHaveBeenCalled()
+  expect(state().install.subject?.selection).toBeUndefined()
+  expect(plugins.installBundle).toHaveBeenCalledWith(spec, {
+    enabled: false, ...mode === 'registry' ? { saveExact: true } : {}, requestId: state().install.requestId, registry: null,
+  })
+})
+
 it('installs an absent Official entry directly at the host target and enables it through the normal installer', async () => {
   const { controller, plugins, face, state } = bench({ listBundles: vi.fn().mockResolvedValue(ok([CATALOG])) })
   await controller.load()
diff --git a/packages/client/ui-plugin-manager/tests/touch-styles.client.spec.ts b/packages/client/ui-plugin-manager/tests/touch-styles.client.spec.ts
index 79cd0229f9..f3e637dd54 100644
--- a/packages/client/ui-plugin-manager/tests/touch-styles.client.spec.ts
+++ b/packages/client/ui-plugin-manager/tests/touch-styles.client.spec.ts
@@ -59,6 +59,11 @@ function ruleBody(selector: string): string {
 }
 
 describe('plugin page touch rules', () => {
+  it('uses the compact page inset below 768px', () => {
+    const narrow = /@media \(max-width: 767px\) \{([\s\S]*?)\n\}/.exec(rules)?.[1]
+    expect(narrow).toContain('--plugin-page-inset: 20px')
+  })
+
   it('fences every hover affordance behind a hover-capable pointer', () => {
     // Unguarded, the browser keeps `:hover` on the tapped element until the next tap
     // elsewhere: a card or menu row stays painted as if the pointer were still on it.
diff --git a/packages/client/ui-plugin-market/package.json b/packages/client/ui-plugin-market/package.json
index 01e94d5ae5..7c926938d4 100644
--- a/packages/client/ui-plugin-market/package.json
+++ b/packages/client/ui-plugin-market/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-plugin-market",
   "description": "Discover tab of the dsh web Plugins page: browse configured plugin market indexes and install their bundles",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-primitives/README.i18n.yaml b/packages/client/ui-primitives/README.i18n.yaml
index e6a2cb577d..8bb6988406 100644
--- a/packages/client/ui-primitives/README.i18n.yaml
+++ b/packages/client/ui-primitives/README.i18n.yaml
@@ -15,23 +15,23 @@
   en: d152484eb41ac6b4
   zh: 09388d293f9be9cb
 /deepseek-ai-dsh-client-ui-primitives/use-this-package:
-  en: 10be7f75a1576575
-  zh: abf2905d89b0da48
+  en: ead6be55c7c9d7cf
+  zh: 125ad36db7328551
 /deepseek-ai-dsh-client-ui-primitives/use-this-package/component-catalog:
   en: 289fe5c01b026e81
   zh: 5680066a8443fba9
 /deepseek-ai-dsh-client-ui-primitives/use-this-package/controls-and-icons:
-  en: b3744373b4b2c1fb
-  zh: 2dbde8ee0bfa5f28
+  en: f13b4ba09521d300
+  zh: a6093993d8fd0cdb
 /deepseek-ai-dsh-client-ui-primitives/use-this-package/rendering-agent-output:
-  en: 32d4557c4429e00d
-  zh: 293a6fef712f7502
+  en: 3271871a42bd52c8
+  zh: 89b7a9f03018454d
 /deepseek-ai-dsh-client-ui-primitives/use-this-package/localizing-copy:
-  en: a943603b74080ef5
-  zh: 43f7a0188aff271b
+  en: 81e58c7b342baf3c
+  zh: 6cd47b16124b215c
 /deepseek-ai-dsh-client-ui-primitives/understand-the-implementation:
-  en: 846ac0f563a53a64
-  zh: bb89d7647bdcc1ab
+  en: 6fbd9df222b41e09
+  zh: 3bdb4a6b9b6bff9e
 /deepseek-ai-dsh-client-ui-primitives/understand-the-implementation/source-map:
   en: fd510d34404eb090
   zh: d05b0890db929ae6
@@ -45,8 +45,8 @@
   en: 45f4cd1ef96bb6d2
   zh: f264d25b780ad1dc
 /deepseek-ai-dsh-client-ui-primitives/further-exploration:
-  en: abbbdbc9a7540743
-  zh: cf5bbeaedb3696d0
+  en: daa908e173136285
+  zh: 5f8492ce8a4c4e48
 /deepseek-ai-dsh-client-ui-primitives/model-experience:
   en: 3120df665299c634
   zh: 1d9f365d091d0d2a
diff --git a/packages/client/ui-primitives/README.md b/packages/client/ui-primitives/README.md
index d95d802886..4e538ecaeb 100644
--- a/packages/client/ui-primitives/README.md
+++ b/packages/client/ui-primitives/README.md
@@ -25,7 +25,7 @@ Use `dsh-client-ui-primitives` to build web-client controls and render agent out
 <a id="use-this-package"></a>
 ## Use this package
 
-`Toast` uses the theme’s toast background and label colors in both light and dark modes. `Menu` data rows and `MenuItemButton` component rows accept owner-provided effective shortcuts and align their keys at the trailing edge as muted text without a background, including submenus. Menus hide these hints when the primary pointer is coarse (`pointer: coarse`) and [keyboard navigation](#input-modality) is inactive. Keyboard navigation reveals them until the next pointer press; keyboard bindings remain active. `ShortcutKeys` defaults to unboxed keys for menu and inline hints. Its `tooltip` variant uses lighter keycaps over the dark bubble and groups plus-separated combinations into one filled block. `Tooltip.shortcutKeys` vertically centers keycaps beside optional localized action text, or shows only keys when the label is empty. The optional `className` supplies owner interaction styles. `Modal` uses the frame’s shared overlay inset, with a minimum 24px viewport margin. Its mask leaves the Windows caption unpainted while the full-viewport layer blocks background clicks. `Modal` and the settings shell share top-layer Escape and Tab handling through `useModalLayer`, restoring the previous focus on close. `closeTopModal(document)` requests the foreground modal’s current close action; newer menus or unregistered dialogs block dismissal of the modal behind them. Components use `isBehindModal` to avoid moving focus behind a nested dialog. Menus consume their local Escape before modal dismissal. `observeComposition` supplies the same composition-end and legacy IME guard to local modal and recording handlers; callers dispose its document listeners with their interaction lifetime.
+`Toast` uses the theme’s toast background and label colors in both light and dark modes. `Menu` data rows and `MenuItemButton` component rows accept owner-provided effective shortcuts and align their keys at the trailing edge as muted text without a background, including submenus. Menu row separators align with the horizontal content edges of their rows. Menus hide these hints when the primary pointer is coarse (`pointer: coarse`) and [keyboard navigation](#input-modality) is inactive. Keyboard navigation reveals them until the next pointer press; keyboard bindings remain active. `ShortcutKeys` defaults to unboxed keys for menu and inline hints. Its `tooltip` variant uses lighter keycaps over the dark bubble and groups plus-separated combinations into one filled block. `Tooltip.shortcutKeys` vertically centers keycaps beside optional localized action text, or shows only keys when the label is empty. The optional `className` supplies owner interaction styles. `Modal` uses the frame’s shared overlay inset, with a minimum 24px viewport margin. Its mask leaves the Windows caption unpainted while the full-viewport layer blocks background clicks. `Modal` and the settings shell share top-layer Escape and Tab handling through `useModalLayer`, restoring the previous focus on close. A dialog that remains mounted restores focus left inside its closed layer, preserving focus already moved elsewhere. `closeTopModal(document)` requests the foreground modal’s current close action; newer menus or unregistered dialogs block dismissal of the modal behind them. Components use `isBehindModal` to avoid moving focus behind a nested dialog. Menus consume their local Escape before modal dismissal. `observeComposition` supplies the same composition-end and legacy IME guard to local modal and recording handlers; callers dispose its document listeners with their interaction lifetime.
 
 `isMobileDevice()` identifies iOS and Android phones and tablets for automatic text-input focus and keyboard dismissal. It recognizes `Android`, `iPhone`, `iPad`, or `iPod` in the UA, and iPads reporting `MacIntel` with more than one touch point. Other devices, including Windows touchscreen computers, return false regardless of window width. The function caches its first result for all callers in the page; component remounts reuse that result, and reloading the page reads the browser environment again. Identified mobile devices require explicit text-input focus. Browser modes or custom UAs that conceal the mobile platform can prevent identification; unrecognized UAs return false. A desktop UA alone cannot distinguish Android tablets from Linux computers.
 
@@ -104,11 +104,15 @@ The catalog above lists what each export is for; this section covers the behavio
 
 `HoverCardGroup` owns private state for one mounted physical list. A `HoverCard` with `grouped` shares the first actually displayed card's dwell: subsequent cards replace the current card immediately during the same pointer interaction. The list and its active portaled card form one pointer interaction: the pointer may enter the card to read or copy, then return to another list item for immediate replacement. After the pointer leaves both, the shared dwell resets when the active card closes through its existing pointer-grace and close lifecycle; the group adds no separate timer. Leaving a list with no active card resets the dwell immediately. Opening an inline card by keyboard focus while the pointer is outside the list does not warm the next pointer visit. Exclusive display includes fading previews: ordinary preview dismissal retains its fade, but a group replacement removes the previous card immediately. Cards without `grouped` remain independent. `as="span"` preserves an inline text container.
 
+An open hover card closes immediately when an ancestor of its anchor becomes inert or hidden.
+
 ### Rendering agent output
 
 The pure Markdown helper `formatQuoteText` normalizes CRLF and CR line endings, then prefixes each line with `> `.
 
-The nearest `MarkdownDelegateProvider` supplies optional `openExternalLink` and `openFile` navigation callbacks. Nested providers replace the enclosing capabilities, and callback changes reach already-rendered links without rebuilding Markdown. Its `openFile` makes local Markdown links clickable after settlement. Absolute and workspace-relative paths support percent escapes and `#L24` / `#L24-L30` fragments; ranges open at their first line. A destination with a backslash and no URL scheme (a drive letter is not one) is a Windows path when it has no `/` or has a backslash before a letter or digit. Such a path keeps every backslash, including one before punctuation, and still decodes character references, so `D:\repo\.github` is not read as an escaped `.`. Literal `?` and `#` in filenames must be percent-encoded. The tooltip uses the decoded path and supplies the accessible name when the label is empty. The callback receives the decoded path and optional line, while the renderer preserves the label and displays a file icon. Without a callback, local links remain text. URL schemes, queries, unsupported fragments, and malformed destinations never reach the file opener.
+The nearest `MarkdownDelegateProvider` supplies optional `openExternalLink` and `openFile` navigation callbacks. Nested providers replace the enclosing capabilities, and callback changes reach already-rendered links without rebuilding Markdown. Its `openFile` makes local Markdown links clickable after settlement. Paths support percent escapes, `#L24` / `#L24-L30` fragments, and `:24` / `:24-30` / `:24:5` suffixes. Ranges open at their first line; columns are consumed but not selected. Fragments disable suffix parsing. Zero, unsafe integers, descending ranges, and unsupported fragments open the file without selecting a line. Literal `?`, `#`, and numeric colon suffixes in filenames must be percent-encoded. A destination with a backslash and no URL scheme (a drive letter is not one) is a Windows path when it has no `/` or has a backslash before a letter or digit. Such a path keeps every backslash, including one before punctuation, and still decodes character references, so `D:\repo\.github` is not read as an escaped `.`. The tooltip uses the decoded path and supplies the accessible name when the label is empty. The callback receives that path and optional line; the label and file icon remain visible. Without a callback, local links remain text. Queries, malformed escapes, and control characters never reach the file opener.
+
+Explicit `./`, `../`, slash/backslash-rooted paths (including UNC), and Windows drive paths such as `C:/work/file.ts` take precedence over URL parsing. Otherwise, destinations accepted by the absolute URL parser remain URLs: `index.ts:24`, `Makefile:12`, and `localhost:3000` are links, without adding a protocol or testing whether they can open. Use `./index.ts:24` for a file reference. Other destinations are paths. Authored links reject `javascript:`, `vbscript:`, `data:`, and `blob:`; other parseable protocols retain native navigation. HTTP(S) links retain delegated navigation and modified-click behavior. No click-time failure notice is added.
 
 `MarkdownText` renders untrusted GFM and TeX math, blocks unsafe links and images, and can turn resolved file mentions into explicit controls. Strikethrough requires `~~`; a single `~`, as in `10~20`, stays literal. A bare URL ends before non-ASCII punctuation or symbols, such as `。` or `，`, so CJK prose that follows it stays outside the link. A surrounding `MarkdownDelegateProvider` receives sanitized HTTP(S) URLs from ordinary clicks; modified clicks and links outside a provider retain native external-anchor behavior. `omitHtml` renders raw HTML as nothing instead of literal text, for documents written for HTML renderers. When the owner passes a `pathImages` vocabulary, image destinations that are local media paths rewrite to displayable URLs on settled renders only (the same streaming gate as file mentions); without a vocabulary, local destinations remain inert alt text. Rewritten images accept HTTP(S), data, blob, and the Desktop `dsh-app://app/api/file`, `dsh-app://app/api/plugin-market/detail-file`, and `dsh-app://app/api/plugin-manager/detail-file` routes; authored Desktop URLs remain inert. A load or decode failure replaces the image with its authored alt text, or the original destination when alt is empty; `fileImages` additionally supplies a localized failure prefix. Changing the image source permits a fresh load. Each mounted image appends a `load` query parameter to a resolved Host `api/file` URL, because browsers reuse a same-URL image within one document despite `no-store`; a newly rendered image of an overwritten file therefore loads its current bytes, and every remount requests the file again; the Host file route redirects that request to a cacheable URL for the current file version. While a reply streams, it freezes completed blocks, advances a top-level open fence by completed lines, and highlights that fence from saved Shiki grammar state. Completed token lines enter fixed-size React groups, so later chunks reconcile only the growing group; an unchanged fence retains that DOM when the final full parse resolves cross-document syntax. `TerminalBlock`, `ReadBlock`, `DiffBlock`, `SearchBlock`, and `WebBlock` render the matching tool-result intent with copy controls, overflow handling, and ANSI processing where applicable. `JsonTree` and `JsonBlock` inspect JSON values read-only, while `UserTextRun` renders uninterpreted text and `ReferenceChip` renders business-resolved labels. An explicit `onActivate` makes a chip a keyboard-accessible button; repeated pointer clicks and an existing text selection do not activate it, while keyboard activation remains available. Labels inherit their host’s wrapping policy. Recognition and JSON transforms belong to [ui-conversation](../ui-conversation/README.md#sent-user-text).
 
@@ -128,6 +132,8 @@ The nearest `MarkdownDelegateProvider` supplies optional `openExternalLink` and
 
 The atoms cannot read the application locale, so every piece of user-facing copy arrives through required label props. `HoverCard`, `TerminalBlock`, `JsonTree`, `CodeBlock`, `MarkdownText`, `JsonBlock`, `ConnectionIndicator`, `Modal`, `DiffBlock`, `ReadBlock`, `SearchBlock`, `WebBlock`, and `ZoomControls` accept complete localized labels. The package owns no language fallback; omission fails typechecking, and each feature maps its typed `t` seat into the primitive's label interface.
 
+`Menu.contextual` positions from the pointer without the frame inset and closes on a right-click inside the popup. Contextual popups with no rendered `role="menuitem"` rows stay hidden, including when legacy Slots return no content. Structured `items` reserve an icon column per divider group; `footer` and each submenu calculate their own groups. A contextual `footer` with a leading separator uses that line instead of adding a second border. Opaque `children` retain their own layout; a legacy Slot after data rows keeps its declared leading separator. `exiting` retains an inert popup for its fade; `returnFocus` restores the original control after asynchronous preparation. `MenuSurface.phase` fades the material, direct content, and macOS backing separately so the material keeps blurring the page. `MENU_TRANSITION_MS` supplies both CSS timing and the popup lifecycle timers. Ordinary dropdowns retain their existing timing.
+
 -----
 
 <a id="understand-the-implementation"></a>
@@ -135,6 +141,8 @@ The atoms cannot read the application locale, so every piece of user-facing copy
 
 `Button` uses H36/R12 for `md` and H28/R8 for `sm`, including outlined controls. The `outline` variant preserves a transparent 0.5px layout border and paints its stroke with an inset shadow. The stroke reads ui-theme's DPR-aware `--dsh-hairline-width`, with a 0.5px fallback outside the theme. Feature classes customize its color through `--dsh-button-outline-color` and preserve the border width, transparent border color, and box-shadow. Menus and cards follow the [shared radius rules](../../../docs/web-styling.md#corner-radii-and-settings-cards); feature classes preserve control geometry.
 
+Portalled menus close when their anchor becomes inert or hidden; contextual menus use the original control supplied by `returnFocus`. While open, a contextual menu adds its ID to that control's `aria-controls` and restores the previous value on close. Their owner’s retained content stays mounted.
+
 `Menu.listClassName` styles the menu card independently of the anchor wrapper, including in portal mode. Leading icons use the `--dsw-alias-menu-icon` color; destructive icons retain their error color.
 
 `Menu` delegates its card material to `MenuSurface`; custom menus use the same component. `MenuSurface` forwards div props and refs, uses translucent fill and blur, and accepts `compact` for the smaller radius. Its default relative positioning contains the material layer; caller classes can supply fixed or absolute placement. On macOS, its non-interactive backing follows the card through CSS anchors and unmounts with it; the backing requires the Web shell’s isolated body. Feature classes control layout and elevation, while the component owns material and outer radius ([menu rules](../../../docs/web-styling.md#component-rules)). Modal masks retain their dark translucent fill without background blur.
@@ -198,6 +206,8 @@ These pages place the atoms in the client stack and the design system.
 
 `QuotePreview` shares the compact quote excerpt and clipped-only inline HoverCard between composers and sent messages. The popover sizes to its text up to 300px and stays within the viewport. Both surfaces display the exact text; editable drafts may supply a localized whole-quote removal action. Quotes opt into the nearest `HoverCardGroup` for exclusive preview display. The primitive performs no recognition or navigation.
 
+`MarkdownDelegate.getTriggerProps` receives explicit file, URL, or original-image targets and returns gesture props. File paths and line numbers are carried by callbacks. File mentions can supply `contextMenuProps`; `ImageLightbox.contextMenuProps` delegates the original image gesture. An image menu owns Escape and Tab while it holds focus, returning to the preview before closing it.
+
 <a id="model-experience"></a>
 ## Model Experience
 
diff --git a/packages/client/ui-primitives/README.zh.md b/packages/client/ui-primitives/README.zh.md
index 115e1defe5..5e0262cdc2 100644
--- a/packages/client/ui-primitives/README.zh.md
+++ b/packages/client/ui-primitives/README.zh.md
@@ -25,7 +25,7 @@ kind: "package-library"
 <a id="use-this-package"></a>
 ## 使用本包
 
-`Toast` 在浅色和深色模式下均使用主题的系统提示背景与文字颜色。`Menu` 数据条目与 `MenuItemButton` 组件条目接收功能 owner 提供的有效快捷键，并在末端以无背景的浅灰色文字对齐显示，子菜单也采用同一呈现。主指针为粗指针（`pointer: coarse`）且未使用[键盘导航](#input-modality)时，菜单隐藏这些提示。键盘导航会显示提示，直到下一次指针按下；快捷键绑定始终生效。`ShortcutKeys` 默认以无方块的按键文字显示菜单和行内提示。`tooltip` 变体在深色气泡上使用稍浅的键帽，以加号连接的组合则共用一个填充色块。`Tooltip.shortcutKeys` 将键帽与可选的本地化操作文本垂直居中排列，标签为空时只显示按键。可选的 `className` 供调用方设置交互状态样式。`Modal` 使用框架共享的浮层起点，视口边距至少为 24px。其遮罩不绘制 Windows 顶栏区域，覆盖整个视口的模态层仍阻挡背景点击。`Modal` 与设置外壳通过 `useModalLayer` 共用顶层 Esc 和 Tab 处理，关闭时恢复先前焦点。`closeTopModal(document)` 请求前台弹窗当前的关闭操作；上层菜单或未注册的对话框会阻止关闭其后方弹窗。组件通过 `isBehindModal` 避免将焦点移到嵌套弹窗后方。菜单先消费自己的 Esc，再由模态层处理关闭。 `observeComposition` 为局部弹层和录键处理提供相同的 composition-end 与旧版 IME 保护；调用方随交互生命周期释放其 document 监听。
+`Toast` 在浅色和深色模式下均使用主题的系统提示背景与文字颜色。`Menu` 数据条目与 `MenuItemButton` 组件条目接收功能 owner 提供的有效快捷键，并在末端以无背景的浅灰色文字对齐显示，子菜单也采用同一呈现。菜单行的分割线与该行内容区的左右边缘对齐。主指针为粗指针（`pointer: coarse`）且未使用[键盘导航](#input-modality)时，菜单隐藏这些提示。键盘导航会显示提示，直到下一次指针按下；快捷键绑定始终生效。`ShortcutKeys` 默认以无方块的按键文字显示菜单和行内提示。`tooltip` 变体在深色气泡上使用稍浅的键帽，以加号连接的组合则共用一个填充色块。`Tooltip.shortcutKeys` 将键帽与可选的本地化操作文本垂直居中排列，标签为空时只显示按键。可选的 `className` 供调用方设置交互状态样式。`Modal` 使用框架共享的浮层起点，视口边距至少为 24px。其遮罩不绘制 Windows 顶栏区域，覆盖整个视口的模态层仍阻挡背景点击。`Modal` 与设置外壳通过 `useModalLayer` 共用顶层 Esc 和 Tab 处理，关闭时恢复先前焦点。关闭后保留在 DOM 中的弹窗仅恢复仍停留于内部的焦点，不覆盖已经移到其他位置的焦点。`closeTopModal(document)` 请求前台弹窗当前的关闭操作；上层菜单或未注册的对话框会阻止关闭其后方弹窗。组件通过 `isBehindModal` 避免将焦点移到嵌套弹窗后方。菜单先消费自己的 Esc，再由模态层处理关闭。 `observeComposition` 为局部弹层和录键处理提供相同的 composition-end 与旧版 IME 保护；调用方随交互生命周期释放其 document 监听。
 
 `isMobileDevice()` 识别 iOS 和 Android 手机及平板，供自动聚焦和收起键盘使用。它识别 UA 中的 `Android`、`iPhone`、`iPad` 或 `iPod`，以及报告 `MacIntel` 且触摸点数大于一的 iPad。其他设备（包括 Windows 触屏电脑）返回 false，不受窗口宽度影响。函数缓存首次判断结果，供页面内的所有调用方共享；组件重新挂载会复用该结果，重新加载页面时会再次读取浏览器环境。识别出的移动设备需要用户主动聚焦文本输入框。隐藏移动平台信息的浏览器模式或自定义 UA 可能导致识别失败；未识别的 UA 返回 false。仅凭桌面 UA 无法区分 Android 平板与 Linux 电脑。
 
@@ -104,11 +104,15 @@ kind: "package-library"
 
 `HoverCardGroup` 为一个已挂载的物理列表持有私有状态。设置 `grouped` 的 `HoverCard` 共享首张实际显示卡片的等待：在同一次指针交互中，后续卡片立即替换当前卡片。列表与其当前活动的 portal 卡片构成一次指针交互：指针可进入卡片阅读或复制，再返回其他列表项并立即替换卡片。指针离开两者后，共享等待在活动卡片通过原有指针宽限及关闭生命周期关闭时重置；分组不另设计时器。列表没有活动卡片时，指针离开便立即重置等待。指针位于列表外时，通过键盘聚焦打开行内卡片不会让下一次指针进入跳过等待。互斥显示也包括正在淡出的预览：普通预览关闭保留淡出，但分组内替换会立即移除前一张卡片。未设置 `grouped` 的卡片保持独立。`as="span"` 保留行内文本容器。
 
+锚点的祖先变为 inert 或隐藏时，已打开的悬浮卡片立即关闭。
+
 ### 渲染 agent 输出
 
 纯 Markdown 工具 `formatQuoteText` 规范化 CRLF 和 CR 换行符，再为每行添加 `> ` 前缀。
 
-最近的 `MarkdownDelegateProvider` 提供可选的 `openExternalLink` 和 `openFile` 导航回调。嵌套 Provider 替换外层能力，回调变化无需重新构建 Markdown 即可到达已渲染链接。其 `openFile` 使本地 Markdown 链接在落定后可点击。绝对路径和工作区相对路径支持百分号转义以及 `#L24` / `#L24-L30` 片段；范围定位到起始行。含反斜杠且无 URL 协议（盘符不算 URL 协议）的目标，若不含 `/`，或在字母或数字前有反斜杠，即为 Windows 路径。此类路径保留所有反斜杠（包括标点前的反斜杠），仍会解码字符引用，因此 `D:\repo\.github` 不会被读作转义的 `.`。文件名中的字面 `?` 和 `#` 必须百分号编码。悬停提示使用解码后的路径，并在标签为空时提供可访问名称。回调接收解码后的路径和可选行号，渲染器保留标签并显示文件图标。不传回调时，本地链接仍为文本。URL 协议、查询串、不支持的片段及格式错误的目标不会传给文件打开器。
+最近的 `MarkdownDelegateProvider` 提供可选的 `openExternalLink` 和 `openFile` 导航回调。嵌套 Provider 替换外层能力，回调变化无需重新构建 Markdown 即可到达已渲染链接。其 `openFile` 使本地 Markdown 链接在落定后可点击。路径支持百分号转义、`#L24` / `#L24-L30` 片段或 `:24` / `:24-30` / `:24:5` 后缀。范围定位到起始行；列号会被移除但不参与定位。有片段时不解析后缀。零、超出安全整数范围的值、倒序范围及不支持的片段只打开文件，不指定行号。文件名中的字面 `?`、`#` 和数字冒号后缀必须百分号编码。含反斜杠且无 URL 协议（盘符不算 URL 协议）的目标，若不含 `/`，或在字母或数字前有反斜杠，即为 Windows 路径。此类路径保留所有反斜杠（包括标点前的反斜杠），仍会解码字符引用，因此 `D:\repo\.github` 不会被读作转义的 `.`。悬停提示使用解码后的路径，并在标签为空时提供可访问名称。回调接收该路径和可选行号；标签与文件图标保留。不传回调时，本地链接仍为文本。查询串、格式错误的转义和控制字符不会传给文件打开器。
+
+明确的 `./`、`../`、斜杠或反斜杠开头的路径（包括 UNC），以及 `C:/work/file.ts` 这样的 Windows 盘符路径优先于 URL 解析。其余目标若能被绝对 URL 解析器接受，就保留为 URL：`index.ts:24`、`Makefile:12` 和 `localhost:3000` 均为链接，不补协议，也不预先检查能否打开。文件引用使用 `./index.ts:24`。其他目标视为路径。正文链接禁止 `javascript:`、`vbscript:`、`data:` 和 `blob:`；其余可解析的协议保留原生导航。HTTP(S) 链接保留委托导航和修饰键点击行为。不添加点击后的失败提示。
 
 `MarkdownText` 渲染不可信的 GFM 与 TeX 公式、阻止不安全的链接与图片，并可把已解析的文件提及转换为显式控件。删除线需要 `~~`；单个 `~`（如 `10~20`）保持字面文本。裸 URL 在非 ASCII 标点或符号（如 `。`、`，`）前结束，紧随其后的中文正文不会并入链接。外层 `MarkdownDelegateProvider` 会接收普通点击产生的已净化 HTTP(S) URL；带修饰键的点击和 Provider 外的链接保留原生外部 anchor 行为。`omitHtml` 不渲染原始 HTML，而不是将其显示为原样文本，用于为 HTML 渲染器编写的文档。当 owner 传入 `pathImages` 词表时，本地媒体路径的图片目标只在落定渲染阶段重写为可展示 URL（与 file mentions 相同的流式门）；不传词表时本地目标保持惰性 alt 文本。重写后的图片支持 HTTP(S)、data、blob 及桌面端 `dsh-app://app/api/file`、`dsh-app://app/api/plugin-market/detail-file` 与 `dsh-app://app/api/plugin-manager/detail-file` 路由；正文直接书写的桌面端 URL 仍保持惰性。加载或解码失败后，图片替换为作者的 alt 文本；alt 为空时显示原始目标路径；`fileImages` 还提供本地化的失败提示前缀。图片源变化后可重新加载。每个挂载的图片会为解析得到的 Host `api/file` 地址追加 `load` 查询参数，因为浏览器在同一文档内会无视 `no-store` 复用相同 URL 的图片；因此覆盖后的文件在新渲染的图片中会加载当前内容，每次重新挂载都会重新请求该文件；Host 文件路由会把该请求重定向到当前文件版本的可缓存地址。回复流式输出时，它冻结已完成的块、按已完成行推进顶层未闭合 fence，并从保存的 Shiki grammar state 为该 fence 增量高亮。已完成的 token 行进入固定大小的 React 分组，后续分片只 reconcile 正在增长的分组；最终全量解析解决跨文档语法时，未变化的 fence 会保留该 DOM。`TerminalBlock`、`ReadBlock`、`DiffBlock`、`SearchBlock` 与 `WebBlock` 把对应的工具结果意图渲染为带复制控件、溢出处理及适用时 ANSI 处理的卡片。`JsonTree` 与 `JsonBlock` 以只读方式检查 JSON 值；`UserTextRun` 渲染不做解析的文本，`ReferenceChip` 渲染业务已解析的标签。显式传入 `onActivate` 后，胶囊成为可由键盘操作的按钮；重复指针点击和已有文本选区不触发激活，键盘激活仍然可用。标签继承所属容器的换行规则。识别和 JSON 变换由 [ui-conversation](../ui-conversation/README.zh.md#sent-user-text) 负责。
 
@@ -128,6 +132,8 @@ kind: "package-library"
 
 这些原子组件无法读取应用 locale，因此每段面向用户的文案都必须通过 label prop 提供。`HoverCard`、`TerminalBlock`、`JsonTree`、`CodeBlock`、`MarkdownText`、`JsonBlock`、`ConnectionIndicator`、`Modal`、`DiffBlock`、`ReadBlock`、`SearchBlock`、`WebBlock` 与 `ZoomControls` 接收完整的本地化 label。本包不拥有语言回退；遗漏会导致类型检查失败，各功能会把带类型的 `t` 席位映射到 primitive 的 label 接口。
 
+`Menu.contextual` 从指针位置定位而不避让顶部栏，并在弹窗内右键时关闭。右键弹窗没有实际渲染的 `role="menuitem"` 行时保持隐藏，包括旧 Slot 返回空内容的情况。结构化 `items` 按分隔线组预留图标栏；`footer` 与各子菜单独立计算分组。右键菜单的 `footer` 以分隔线开头时，直接使用该线，不再叠加边框。不透明的 `children` 保留原有布局；数据行后方的旧 Slot 保留其声明的首条分隔线。`exiting` 在淡出期间保留不可交互的弹窗；`returnFocus` 在异步准备后恢复原控件焦点。`MenuSurface.phase` 分别对材质层、直接内容和 macOS 背景淡入淡出，让材质层继续模糊页面。`MENU_TRANSITION_MS` 同时提供 CSS 动画与弹窗生命周期计时。普通下拉菜单保留原有时序。
+
 -----
 
 <a id="understand-the-implementation"></a>
@@ -135,6 +141,8 @@ kind: "package-library"
 
 `Button` 的 `md` 使用 H36/R12，`sm` 使用 H28/R8，包含描边控件。`outline` 变体保留 0.5px 透明边框用于布局，并通过内阴影绘制描边。描边宽度读取 ui-theme 随设备像素比更新的 `--dsh-hairline-width`，未安装主题时回退到 0.5px。功能样式通过 `--dsh-button-outline-color` 定制描边颜色，并保留边框宽度、透明边框颜色和 box-shadow。菜单与卡片遵循[共享圆角规则](../../../docs/web-styling.zh.md#corner-radii-and-settings-cards)；功能样式保留控件几何。
 
+锚点变为 inert 或隐藏时，portal 菜单会关闭；右键菜单使用 `returnFocus` 提供的原始控件。右键菜单打开期间会将自身 ID 加入该控件的 `aria-controls`，关闭时恢复原值。其所属区域保留的内容继续挂载。
+
 `Menu.listClassName` 独立控制菜单卡片样式，不影响入口容器，也适用于 portal 模式。前置图标使用 `--dsw-alias-menu-icon` 文本色；破坏性操作图标保留错误色。
 
 `Menu` 将卡片材质交给 `MenuSurface`，自定义菜单也使用该组件。`MenuSurface` 转发 div 属性和 ref，采用透明填充及模糊，`compact` 使用较小圆角。默认相对定位使材质层限制在容器内；调用方的类可以设置 fixed 或 absolute 定位。macOS 上，不接收交互的底层通过 CSS 锚点跟随卡片，并随卡片卸载；该底层要求 Web 外壳隔离 body 的层叠上下文。功能类控制布局和层级，组件负责材质和外圆角（[菜单规则](../../../docs/web-styling.zh.md#component-rules)）。 模态遮罩保留黑色半透明填充，不模糊背景。
@@ -198,6 +206,8 @@ kind: "package-library"
 
 `QuotePreview` 在 composer 与已发送消息之间共享紧凑 quote 摘录和仅截断时显示的行内 HoverCard。原文弹层按文本内容确定宽度，最大为 300px，并限制在视口内。两处均展示原文；可编辑草稿可以提供本地化的整条 quote 删除操作。quote 加入最近的 `HoverCardGroup`，使原文弹层互斥显示。该 primitive 不负责识别或导航。
 
+`MarkdownDelegate.getTriggerProps` 接收明确的文件、链接或原图目标并返回手势 props。文件路径与行号通过回调传递。文件引用可提供 `contextMenuProps`；`ImageLightbox.contextMenuProps` 转发原图手势。图片菜单持有焦点时负责 Escape 与 Tab，先返回预览再关闭预览。
+
 <a id="model-experience"></a>
 ## 模型体验
 
diff --git a/packages/client/ui-primitives/package.json b/packages/client/ui-primitives/package.json
index 0872bfe4fb..40b94573d8 100644
--- a/packages/client/ui-primitives/package.json
+++ b/packages/client/ui-primitives/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-primitives",
   "description": "Pure React atoms for the dsh web UI: controls, icons, markdown, and JSON inspectors (zero cordis)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-primitives/src/HoverCard.tsx b/packages/client/ui-primitives/src/HoverCard.tsx
index f11c6bad30..bd727d0c85 100644
--- a/packages/client/ui-primitives/src/HoverCard.tsx
+++ b/packages/client/ui-primitives/src/HoverCard.tsx
@@ -174,6 +174,10 @@ export function HoverCard({
       const wrapper = rootRef.current
       /* v8 ignore next -- the ref is attached before the layout effect runs and the listeners die with it. */
       if (wrapper === null) return
+      if (wrapper.closest('[inert], [hidden]') !== null) {
+        dismissImmediately()
+        return
+      }
       const r = wrapper.getBoundingClientRect()
       const h = cardRef.current?.offsetHeight ?? 0
       if (variant === 'preview') {
@@ -220,6 +224,11 @@ export function HoverCard({
       setPos({ left: r.right + ANCHOR_GAP, top })
     }
     place()
+    // Observe only the anchor's ancestors: an offscreen drawer can hide without resizing its retained row.
+    const visibility = new MutationObserver(place)
+    for (let ancestor = rootRef.current?.parentElement; ancestor != null; ancestor = ancestor.parentElement) {
+      visibility.observe(ancestor, { attributes: true, attributeFilter: ['inert', 'hidden'] })
+    }
     const observer = (variant === 'preview' || inline) && typeof ResizeObserver !== 'undefined' ? new ResizeObserver(place) : null
     for (const element of [cardRef.current, rootRef.current, widthAnchorRef?.current]) {
       if (element !== null && element !== undefined) observer?.observe(element)
@@ -228,10 +237,11 @@ export function HoverCard({
     window.addEventListener('resize', place)
     return () => {
       observer?.disconnect()
+      visibility.disconnect()
       window.removeEventListener('scroll', place, true)
       window.removeEventListener('resize', place)
     }
-  }, [open, variant, widthAnchorRef, positioned, inline, fitContent])
+  }, [open, variant, widthAnchorRef, positioned, inline, fitContent, dismissImmediately])
 
   // The first placement ran before the card mounted (height read 0): once the
   // card's real height is measurable, correct the bottom-edge clamp. The
diff --git a/packages/client/ui-primitives/src/ImageLightbox.tsx b/packages/client/ui-primitives/src/ImageLightbox.tsx
index 1cb3fe4a8c..36deb6d2cf 100644
--- a/packages/client/ui-primitives/src/ImageLightbox.tsx
+++ b/packages/client/ui-primitives/src/ImageLightbox.tsx
@@ -1,3 +1,4 @@
+import type { HTMLAttributes } from 'react'
 import { useEffect, useRef } from 'react'
 import { createPortal } from 'react-dom'
 import { IconCloseOutlineRegular } from './icons/index.tsx'
@@ -21,14 +22,16 @@ export interface ImageLightboxLabels {
  * @param props.src - the original image URL.
  * @param props.alt - the image's alt text.
  * @param props.labels - dialog and close-control strings.
+ * @param props.contextMenuProps - optional original-image gesture bindings.
  * @param props.onClose - dismiss callback owned by the opener.
  * @returns the modal preview dialog.
  */
-export function ImageLightbox({ src, alt, labels, onClose }: {
+export function ImageLightbox({ src, alt, labels, onClose, contextMenuProps }: {
   src: string
   alt: string
   labels: ImageLightboxLabels
   onClose: () => void
+  contextMenuProps?: Pick<HTMLAttributes<HTMLElement>, 'onContextMenu' | 'onKeyDown' | 'tabIndex'> | undefined
 }) {
   const closeRef = useRef<HTMLButtonElement | null>(null)
   const restoreRef = useRef<HTMLElement | null>(null)
@@ -37,6 +40,8 @@ export function ImageLightbox({ src, alt, labels, onClose }: {
     restoreRef.current = document.activeElement instanceof HTMLElement ? document.activeElement : null
     closeRef.current?.focus()
     const onKeyDown = (event: globalThis.KeyboardEvent): void => {
+      // A portaled image menu owns Escape and Tab until it returns focus.
+      if (event.defaultPrevented || document.activeElement?.closest('[role="menu"]')) return
       if (event.key === 'Escape') { event.stopPropagation(); onClose() }
       if (event.key === 'Tab') { event.preventDefault(); closeRef.current?.focus() }
     }
@@ -56,7 +61,7 @@ export function ImageLightbox({ src, alt, labels, onClose }: {
     >
       <div className={css.stage}>
         <div className={css.mask} aria-hidden="true" onMouseDown={onClose} />
-        <img className={css.image} src={src} alt={alt} />
+        <img className={css.image} src={src} alt={alt} {...contextMenuProps} />
         <button ref={closeRef} type="button" className={css.close} aria-label={labels.close} onClick={onClose}>
           <IconCloseOutlineRegular size={16} />
         </button>
diff --git a/packages/client/ui-primitives/src/Menu.module.css b/packages/client/ui-primitives/src/Menu.module.css
index 1fd68864bb..d3c24aad2b 100644
--- a/packages/client/ui-primitives/src/Menu.module.css
+++ b/packages/client/ui-primitives/src/Menu.module.css
@@ -34,6 +34,11 @@
   max-width: 360px;
 }
 
+/* Legacy slots can render no rows; keep empty context popups out of layout. */
+.list[data-context-menu]:not(:has([role='menuitem'])) {
+  display: none;
+}
+
 /* Portal mode: fixed in the viewport, coordinates supplied inline from the
  * anchor rect (side/align resolved in JS, the in-place offset rules above
  * don't apply). Portaled lists must layer above modal overlays (z 1000) —
@@ -87,6 +92,12 @@
   border-top: 0.5px solid var(--dsw-alias-border-l2);
 }
 
+.list[data-context-menu] .footer:has(> .separator:first-child) {
+  margin-top: 0;
+  padding-top: 0;
+  border-top: none;
+}
+
 .itemWrap {
   position: relative;
 }
@@ -153,7 +164,7 @@
 }
 
 .compactList .separator {
-  margin: 2px;
+  margin: 2px 6px;
 }
 
 .compactList .label {
@@ -258,11 +269,11 @@
   color: var(--dsw-alias-label-tertiary);
 }
 
-/* Separator cell (figma 122:9481): py 4 / px 2 around the hairline. l2, not
- * l1, for the same reason as .footer: l1 is near-invisible on this surface. */
+/* Separator endpoints align with the row content. The l2 stroke stays visible
+ * on the menu surface. */
 .separator {
   height: 0.5px;
-  margin: 3px 2px;
+  margin: 3px 8px;
   background: var(--dsw-alias-border-l2);
 }
 
@@ -274,6 +285,11 @@
   display: none;
 }
 
+/* A legacy outlet following structured rows is not the beginning of the menu. */
+.list[data-context-menu] .viewport > .itemWrap ~ [data-slot] .itemWrap:first-child > .separator:first-child {
+  display: block;
+}
+
 /* The submenu aligns with the parent's bottom edge. Its hit bridge covers
  * the menu inset and the 6px gap so pointer movement keeps it open. */
 .submenu {
@@ -293,3 +309,7 @@
   left: -10px;
   width: 10px;
 }
+
+.list[data-menu-phase='dismiss'],
+.list[data-menu-phase='replace'] { pointer-events: none; }
+.list[data-context-menu].scrollable { max-height: calc(100vh - 24px); }
diff --git a/packages/client/ui-primitives/src/Menu.tsx b/packages/client/ui-primitives/src/Menu.tsx
index 68b3a5766e..753de26f95 100644
--- a/packages/client/ui-primitives/src/Menu.tsx
+++ b/packages/client/ui-primitives/src/Menu.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useLayoutEffect, useRef, useState } from 'react'
+import { useEffect, useId, useLayoutEffect, useRef, useState } from 'react'
 import type { CSSProperties, ReactNode, SyntheticEvent } from 'react'
 import { createPortal } from 'react-dom'
 import clsx from 'clsx'
@@ -24,7 +24,7 @@ export interface MenuItem {
   /** Destructive row: error-colored text/icon and danger hover fill. */
   danger?: boolean
   /** Nested card opened to the right on hover/focus. */
-  submenu?: readonly MenuItem[]
+  submenu?: readonly MenuEntry[]
 }
 
 /** Hairline between item groups (not selectable). */
@@ -115,6 +115,25 @@ function isLabel(entry: MenuEntry): entry is MenuLabel {
   return 'type' in entry && entry.type === 'label'
 }
 
+/** Mark icon columns within each separator-delimited data group. */
+function iconColumns(entries: readonly MenuEntry[], contextual: boolean): ReadonlySet<MenuEntry> {
+  const aligned = new Set<MenuEntry>()
+  if (!contextual) return aligned
+  let group: MenuEntry[] = []
+  const finish = (): void => {
+    if (group.some(entry => !isLabel(entry) && !isSeparator(entry) && entry.icon !== undefined)) {
+      for (const entry of group) aligned.add(entry)
+    }
+    group = []
+  }
+  for (const entry of entries) {
+    if (isSeparator(entry)) finish()
+    else group.push(entry)
+  }
+  finish()
+  return aligned
+}
+
 /** Unplaced portal list: hidden but laid out at a fixed origin so offsetWidth/offsetHeight are real. */
 const MEASURE_STYLE: CSSProperties = { visibility: 'hidden', left: 0, top: 0 }
 
@@ -125,6 +144,9 @@ const MEASURE_STYLE: CSSProperties = { visibility: 'hidden', left: 0, top: 0 }
  * anchor's first button, and selecting a row does the same — the rows unmount
  * with the list. Only a keyboard on the trigger or inside the list is
  * intercepted; Tab presses elsewhere on the page stay the browser's.
+ * @param props.contextual - cursor positioning, context dismissal, and per-divider icon alignment.
+ * @param props.exiting - retain an inert popup during dismissal or replacement fade.
+ * @param props.returnFocus - original control captured before asynchronous menu preparation.
  * @param props.autoFocus - focus the first item on open; the arrow keys walk the list either way.
  * @param props.open - whether the list is showing (owner-controlled).
  * @param props.anchor - the trigger element (rendered in place).
@@ -155,7 +177,7 @@ const MEASURE_STYLE: CSSProperties = { visibility: 'hidden', left: 0, top: 0 }
  * frame, and scroll/resize; return null to skip placement for that frame.
  * @param props.minWidthFromAnchor - in portal mode, keep the menu at least as wide as its anchor, bounded by viewport margins.
  * @param props.footer - rows pinned below the scrolling items area, separated
- * by a hairline; they stay visible while the items above scroll.
+ * by a hairline; contextual menus reuse an explicit leading separator. These rows stay visible while the items above scroll.
  * @param props.children - component rows rendered after `items` in the same
  * list, each a `role="menuitem"` button such as {@link MenuItemButton}; they
  * share the keyboard walk, the submenu exclusivity, and the post-selection
@@ -170,8 +192,14 @@ const MEASURE_STYLE: CSSProperties = { visibility: 'hidden', left: 0, top: 0 }
  * document.body outside the owner's DOM subtree.
  * @returns anchor wrapper with the conditional list.
  */
-export function Menu({ open, anchor, items = [], children, selectedId, selectedIds, onSelect, onClose, align = 'start', side = 'bottom', portal = false, closeOnPointerLeave = false, dense = false, compact = false, autoFocus = false, selection = 'check', getAnchorRect, minWidthFromAnchor = false, footer, className, listClassName }: {
+export function Menu({ open, anchor, items = [], children, selectedId, selectedIds, onSelect, onClose, align = 'start', side = 'bottom', portal = false, closeOnPointerLeave = false, dense = false, compact = false, autoFocus = false, selection = 'check', getAnchorRect, minWidthFromAnchor = false, footer, className, listClassName, contextual = false, exiting, returnFocus }: {
   open: boolean
+  /** Pointer-positioned popup: cursor clearance, grouped icons, and context gestures. */
+  contextual?: boolean
+  /** Resolve the original control for focus restoration and inert/hidden dismissal. */
+  returnFocus?: (() => HTMLElement | null) | undefined
+  /** Retain a dismissed context popup during its short fade. */
+  exiting?: 'dismiss' | 'replace' | undefined
   autoFocus?: boolean
   anchor: ReactNode
   items?: readonly MenuEntry[]
@@ -195,6 +223,17 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
 }) {
   const rootRef = useRef<HTMLSpanElement>(null)
   const listRef = useRef<HTMLDivElement>(null)
+  const menuId = useId()
+  useLayoutEffect(() => {
+    const trigger = returnFocus?.()
+    if (!open || !contextual || trigger == null) return
+    const previous = trigger.getAttribute('aria-controls')
+    trigger.setAttribute('aria-controls', [previous, menuId].filter(Boolean).join(' '))
+    return () => {
+      if (previous === null) trigger.removeAttribute('aria-controls')
+      else trigger.setAttribute('aria-controls', previous)
+    }
+  }, [open, contextual, returnFocus, menuId])
   /** Index the arrow walk last focused, the resume point when focus left the rows. */
   const walkIndex = useRef<number | null>(null)
   /**
@@ -213,7 +252,7 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
    * @param navigation - whether explicit keyboard traversal should retain its focus indicator.
    */
   const refocusAnchor = (navigation = false): void => {
-    const trigger = triggerRef.current
+    const trigger = returnFocus?.() ?? triggerRef.current
     const target = trigger !== null && document.contains(trigger) && !(trigger as HTMLButtonElement).disabled
       ? trigger : rootRef.current?.querySelector<HTMLButtonElement>('button:not(:disabled)')
     if (target == null) return
@@ -231,15 +270,19 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
   const refocusAfterSelection = (): void => {
     const navigation = selectingWithTab.current
     queueMicrotask(() => {
-      if (openRef.current) return
+      if (openRef.current && exitingRef.current === undefined) return
       const active = document.activeElement
       if (active === null || active === document.body || listRef.current?.contains(active) === true) refocusAnchor(navigation)
     })
   }
+  const exitingRef = useRef(exiting)
+  exitingRef.current = exiting
   const openRef = useRef(open)
   openRef.current = open
   const [openSubmenuId, setOpenSubmenuId] = useState<string | null>(null)
   const [fixedPos, setFixedPos] = useState<CSSProperties | null>(null)
+  const close = useRef(onClose)
+  close.current = onClose
   const { arm: armClose, cancel: cancelClose } = usePointerGrace(onClose)
 
   // Portal mode: fixed-position the list from the anchor rect before paint;
@@ -250,6 +293,11 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
   useLayoutEffect(() => {
     if (!open || !portal) { setFixedPos(null); return }
     const place = () => {
+      const anchorElement = returnFocus?.() ?? rootRef.current
+      if (anchorElement?.closest('[inert], [hidden]') != null) {
+        if (exitingRef.current === undefined) close.current()
+        return
+      }
       let r: DOMRect | null
       if (getAnchorRect !== undefined) {
         r = getAnchorRect()
@@ -284,7 +332,7 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
       }
 
       if (lw > 0) x = Math.min(Math.max(x, MARGIN), vw - lw - MARGIN)
-      if (lh > 0) y = Math.min(Math.max(y, overlayTopMargin(MARGIN, r, GAP)), vh - lh - MARGIN)
+      if (lh > 0) y = Math.min(Math.max(y, contextual ? MARGIN : overlayTopMargin(MARGIN, r, GAP)), vh - lh - MARGIN)
 
       setFixedPos(current => current?.left === x && current.top === y ? current : { left: x, top: y })
     }
@@ -305,49 +353,49 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
       window.removeEventListener('scroll', place, true)
       window.removeEventListener('resize', place)
     }
-  }, [open, portal, align, side, getAnchorRect, minWidthFromAnchor])
+  }, [open, portal, align, side, getAnchorRect, minWidthFromAnchor, contextual, returnFocus])
 
   // Opening remembers where the keyboard was, so closing can hand it back to
   // that control — an anchor wrapping several (a split button) cannot be asked
   // for it by position. Declared before the autoFocus effect so the capture
   // sees the trigger, not the row autoFocus is about to focus.
   useEffect(() => {
-    if (!open) {
-      triggerRef.current = null
-      return
-    }
+    if (!open) return
     const active = document.activeElement
-    triggerRef.current = active instanceof HTMLElement && rootRef.current?.contains(active) === true ? active : null
+    triggerRef.current = active instanceof HTMLElement && (getAnchorRect !== undefined || rootRef.current?.contains(active) === true)
+      ? active : null
   }, [open])
 
   useEffect(() => {
-    if (!open || !autoFocus) return
+    if (!open || exiting !== undefined || (portal && fixedPos === null) || !autoFocus
+      || listRef.current?.contains(document.activeElement)) return
     const first = listRef.current?.querySelector<HTMLButtonElement>('button:not(:disabled)')
     walkIndex.current = first === undefined || first === null ? null : 0
     if (first != null) focusWithoutRing(first)
-  }, [open, autoFocus])
+  }, [open, autoFocus, items.length, footer?.length, fixedPos, portal, exiting])
 
   useEffect(() => {
-    if (!open) {
+    if (!open || exiting !== undefined) {
       setOpenSubmenuId(null)
       walkIndex.current = null
       return
     }
     const composition = observeComposition(document)
     const onPointerDown = (e: PointerEvent) => {
-      if (!(e.target instanceof Node)) return
+      if (!(e.target instanceof Node) || (contextual && e.button === 2)) return
       // The portaled list is outside the anchor subtree; check both.
       if (rootRef.current?.contains(e.target) === true) return
       if (listRef.current?.contains(e.target) === true) return
       onClose()
     }
     const onKeyDown = (e: KeyboardEvent) => {
-      if (composition.guards(e) || isBehindModal(rootRef.current) || e.defaultPrevented || e.ctrlKey || e.altKey || e.metaKey) return
+      if (composition.guards(e) || isBehindModal(triggerRef.current ?? rootRef.current)
+        || e.defaultPrevented || e.ctrlKey || e.altKey || e.metaKey) return
       // Where the keyboard is, computed once: the menu owns it when it holds a
       // row or sits on its anchor region.
       const focused = document.activeElement
       const insideList = listRef.current?.contains(focused) === true
-      const anchored = rootRef.current?.contains(focused) === true || insideList
+      const anchored = focused === returnFocus?.() || rootRef.current?.contains(focused) === true || insideList
       if (e.key === 'Escape' && !e.shiftKey) {
         e.preventDefault()
         if (e.repeat) return
@@ -433,7 +481,11 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
       document.removeEventListener('keydown', onEscape, true)
       window.removeEventListener('blur', onWindowBlur)
     }
-  }, [open, onClose, autoFocus])
+  }, [open, onClose, autoFocus, contextual, exiting])
+
+  useLayoutEffect(() => {
+    if (exiting === 'dismiss' && listRef.current?.contains(document.activeElement)) refocusAnchor()
+  }, [exiting])
 
   // A close from selection/Escape/outside click outruns a pending grace close;
   // left armed it would shut a list reopened inside the grace window. Its own
@@ -447,7 +499,9 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
   // scroll clip would crop it, so only submenu-free menus get the height cap.
   const scrollable = !items.some(entry => !isSeparator(entry) && !isLabel(entry) && entry.submenu !== undefined && entry.submenu.length > 0)
 
-  const renderEntry = (entry: MenuEntry) => {
+  const itemColumns = iconColumns(items, contextual)
+  const footerColumns = iconColumns(footer ?? [], contextual)
+  const renderEntry = (entry: MenuEntry, columns: ReadonlySet<MenuEntry>) => {
     if (isSeparator(entry)) {
       return <div key={entry.id} className={css.separator} role="separator" />
     }
@@ -456,6 +510,7 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
     }
     const hasSub = entry.submenu !== undefined && entry.submenu.length > 0
     const subOpen = hasSub && openSubmenuId === entry.id
+    const subColumns = iconColumns(entry.submenu ?? [], contextual)
     const selected = entry.id === selectedId || selectedIds?.includes(entry.id) === true
     return (
       <div
@@ -481,7 +536,7 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
             onSelect?.(entry.id)
           }}
         >
-          {entry.icon !== undefined && <span className={css.itemIcon}>{entry.icon}</span>}
+          {(entry.icon !== undefined || columns.has(entry)) && <span aria-hidden="true" className={css.itemIcon}>{entry.icon}</span>}
           <span className={css.itemLabel}>{entry.label}</span>
           {entry.shortcut !== undefined && <span aria-hidden="true" className={css.shortcut}><ShortcutKeys keys={entry.shortcut.keys} className={css.shortcutKeys} /></span>}
           {/* Selection marker is a trailing check (figma .Menu_cell) unless the fill mode carries it. */}
@@ -489,21 +544,23 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
         </button>
         {subOpen && entry.submenu !== undefined && (
           <MenuSurface compact={compact} className={clsx(css.submenu, compact && css.compactList)} role="menu">
-            {entry.submenu.map(sub => (
-              <button
-                key={sub.id}
-                type="button"
-                role="menuitem"
-                className={css.item}
-                disabled={sub.disabled}
-                aria-keyshortcuts={sub.shortcut?.aria}
-                onClick={() => { onSelect?.(sub.id); refocusAfterSelection() }}
-              >
-                {sub.icon !== undefined && <span className={css.itemIcon}>{sub.icon}</span>}
-                <span className={css.itemLabel}>{sub.label}</span>
-                {sub.shortcut !== undefined && <span aria-hidden="true" className={css.shortcut}><ShortcutKeys keys={sub.shortcut.keys} className={css.shortcutKeys} /></span>}
-              </button>
-            ))}
+            {entry.submenu.map(sub => isSeparator(sub)
+              ? <div key={sub.id} className={css.separator} role="separator" />
+              : isLabel(sub) ? <div key={sub.id} className={css.label}>{sub.text}</div> : (
+                <button
+                  key={sub.id}
+                  type="button"
+                  role="menuitem"
+                  className={css.item}
+                  disabled={sub.disabled}
+                  aria-keyshortcuts={sub.shortcut?.aria}
+                  onClick={() => { onSelect?.(sub.id); refocusAfterSelection() }}
+                >
+                  {(sub.icon !== undefined || subColumns.has(sub)) && <span aria-hidden="true" className={css.itemIcon}>{sub.icon}</span>}
+                  <span className={css.itemLabel}>{sub.label}</span>
+                  {sub.shortcut !== undefined && <span aria-hidden="true" className={css.shortcut}><ShortcutKeys keys={sub.shortcut.keys} className={css.shortcutKeys} /></span>}
+                </button>
+              ))}
           </MenuSurface>
         )}
       </div>
@@ -526,11 +583,14 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
   // already at the final position (with getAnchorRect returning null the
   // list simply stays hidden).
   const list = open && (
-    <MenuSurface compact={compact}
+    <MenuSurface compact={compact} id={contextual ? menuId : undefined}
       ref={listRef}
       className={clsx(css.list, listClassName, dense && css.denseList, compact && css.compactList, scrollable && css.scrollable, portal && css.portal, side === 'top' && !portal && css.sideTop, align === 'end' && !portal && css.alignEnd)}
       style={portal ? fixedPos ?? MEASURE_STYLE : undefined}
-      role="menu"
+      role={exiting === undefined ? 'menu' : undefined}
+      aria-hidden={exiting === undefined ? undefined : true}
+      data-context-menu={contextual ? '' : undefined}
+      phase={contextual ? exiting ?? 'enter' : undefined}
       // React portals bubble synthetic events through the REACT tree: without
       // this stop, an item click re-fires the anchor row's own onClick
       // (open/toggle) after onSelect. The same bubble is where every row's
@@ -542,16 +602,19 @@ export function Menu({ open, anchor, items = [], children, selectedId, selectedI
         const row = e.target instanceof Element ? e.target.closest('button[role="menuitem"]') : null
         if (row !== null && row.getAttribute('aria-haspopup') !== 'menu') refocusAfterSelection()
       }}
+      onContextMenu={contextual ? (event) => {
+        event.preventDefault(); event.stopPropagation(); onClose()
+      } : undefined}
       onMouseOver={collapseSubmenuFrom}
       onFocus={collapseSubmenuFrom}
     >
       <div className={css.viewport} role="presentation">
-        {items.map(renderEntry)}
+        {items.map(entry => renderEntry(entry, itemColumns))}
         {children}
       </div>
       {footer !== undefined && footer.length > 0 && (
         <div className={css.footer} role="presentation">
-          {footer.map(renderEntry)}
+          {footer.map(entry => renderEntry(entry, footerColumns))}
         </div>
       )}
     </MenuSurface>
diff --git a/packages/client/ui-primitives/src/MenuSurface.module.css b/packages/client/ui-primitives/src/MenuSurface.module.css
index 57d9308455..896264095d 100644
--- a/packages/client/ui-primitives/src/MenuSurface.module.css
+++ b/packages/client/ui-primitives/src/MenuSurface.module.css
@@ -47,3 +47,19 @@
   background: var(--dsw-alias-bg-base);
   pointer-events: none;
 }
+
+/* Opacity on the container would prevent its material from blurring the page.
+ * Enter animations release their compositing layers so nested menus can blur too. */
+.surface[data-menu-phase='enter'] > *,
+.backing[data-menu-phase='enter'] { animation: dsh-context-menu-in var(--dsh-menu-enter) ease-out; }
+.surface[data-menu-phase='dismiss'] > *,
+.backing[data-menu-phase='dismiss'],
+.surface[data-menu-phase='replace'] > *,
+.backing[data-menu-phase='replace'] { animation: dsh-context-menu-out var(--dsh-menu-dismiss) ease-in both; }
+.surface[data-menu-phase='replace'] > *,
+.backing[data-menu-phase='replace'] { animation-duration: var(--dsh-menu-replace); }
+@keyframes dsh-context-menu-in { from { opacity: 0; } to { opacity: 1; } }
+@keyframes dsh-context-menu-out { from { opacity: 1; } to { opacity: 0; } }
+@media (prefers-reduced-motion: reduce) {
+  .surface[data-menu-phase] > *, .backing[data-menu-phase] { animation-duration: 0ms; }
+}
diff --git a/packages/client/ui-primitives/src/MenuSurface.tsx b/packages/client/ui-primitives/src/MenuSurface.tsx
index 1bdefd0d6a..8e54773170 100644
--- a/packages/client/ui-primitives/src/MenuSurface.tsx
+++ b/packages/client/ui-primitives/src/MenuSurface.tsx
@@ -4,10 +4,15 @@ import { createPortal } from 'react-dom'
 import clsx from 'clsx'
 import css from './MenuSurface.module.css'
 
+/** Context-menu transition durations in milliseconds, shared with its lifecycle owner. */
+export const MENU_TRANSITION_MS = Object.freeze({ enter: 40, dismiss: 80, replace: 10, prepare: 20 })
+
 /** Menu containers preserve native div props and refs. */
 export interface MenuSurfaceProps extends ComponentPropsWithoutRef<'div'> {
   /** Match the shared compact menu's smaller outer radius. */
   compact?: boolean
+  /** Fade direct content, material, and native backing without isolating the material's backdrop. */
+  phase?: 'enter' | 'dismiss' | 'replace' | undefined
 }
 
 /**
@@ -18,7 +23,7 @@ export interface MenuSurfaceProps extends ComponentPropsWithoutRef<'div'> {
  * @returns Menu content plus a backing portal removed with the menu.
  */
 export const MenuSurface = forwardRef<HTMLDivElement, MenuSurfaceProps>(function MenuSurface({
-  compact = false, className, style, children, ...props
+  compact = false, phase, className, style, children, ...props
 }, ref) {
   const id = useId()
   const backingRef = useRef<HTMLDivElement>(null)
@@ -28,17 +33,20 @@ export const MenuSurface = forwardRef<HTMLDivElement, MenuSurfaceProps>(function
     // eslint-disable-next-line @typescript-eslint/no-non-null-assertion -- The portal ref is attached before layout effects run.
     document.body.appendChild(backingRef.current!)
   }, [])
-  const anchorStyle: CSSProperties & { '--dsh-menu-anchor': string } = {
+  const anchorStyle: CSSProperties & Record<`--dsh-menu-${string}`, string> = {
     '--dsh-menu-anchor': `--dsh-menu-${id.replaceAll(':', '')}`,
+    '--dsh-menu-enter': `${MENU_TRANSITION_MS.enter}ms`,
+    '--dsh-menu-dismiss': `${MENU_TRANSITION_MS.dismiss}ms`,
+    '--dsh-menu-replace': `${MENU_TRANSITION_MS.replace}ms`,
   }
   return <>
-    <div {...props} ref={ref} data-menu-material="translucent"
+    <div {...props} ref={ref} data-menu-material="translucent" data-menu-phase={phase}
       className={clsx(css.surface, compact && css.compact, className)} style={{ ...style, ...anchorStyle }}>
       <div aria-hidden="true" className={css.material} />
       {children}
     </div>
     {createPortal(
-      <div ref={backingRef} aria-hidden="true" data-menu-backing="" className={clsx(css.backing, compact && css.compact)}
+      <div ref={backingRef} aria-hidden="true" data-menu-backing="" data-menu-phase={phase} className={clsx(css.backing, compact && css.compact)}
         style={{ ...anchorStyle, visibility: style?.visibility }} />,
       document.body,
     )}
diff --git a/packages/client/ui-primitives/src/icons/artwork.ts b/packages/client/ui-primitives/src/icons/artwork.ts
index b92ac0e900..073f9988d3 100644
--- a/packages/client/ui-primitives/src/icons/artwork.ts
+++ b/packages/client/ui-primitives/src/icons/artwork.ts
@@ -20,6 +20,7 @@ interface IconArtwork {
 
 /** Default artwork keyed by glyph name; symbol ids derive from these keys. */
 export const ICON_ARTWORK = {
+  'save-outline': { size: 16, svg: strokeWidth => `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="${strokeWidth}" stroke-linejoin="round"><path d="M2.5 1.5h8l3 3v9a1 1 0 0 1-1 1h-10a1 1 0 0 1-1-1v-11a1 1 0 0 1 1-1Z"></path><path d="M4.5 1.5v4h6v-4M4 14.5v-6h7v6"></path></svg>` },
   'new-chat-outline': { size: 16, svg: strokeWidth => `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" fill="none" stroke-width="${strokeWidth}"><path d="M2.37091 11.2501C1.58745 9.89288 1.32067 8.29835 1.61969 6.76006C1.91872 5.22177 2.76342 3.8433 3.99826 2.87846C5.2331 1.91362 6.77494 1.42737 8.33988 1.50925C9.90482 1.59113 11.3875 2.23562 12.5149 3.32406C13.6425 4.41269 14.3387 5.87206 14.4754 7.4334C14.612 8.99474 14.18 10.5529 13.2587 11.8209C12.3375 13.0888 10.9891 13.9813 9.46194 14.3337C8.18691 14.628 6.85895 14.5294 5.64989 14.0605C5.1712 13.8748 4.76962 13.4932 4.26534 13.3967C3.67413 13.2835 2.95257 13.5598 2.03794 14.3337" stroke="currentColor"></path><path d="M8 5V11" stroke="currentColor"></path><path d="M5 8H11" stroke="currentColor"></path></svg>` },
   'search-outline': { size: 16, svg: strokeWidth => `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" fill="none" stroke-width="${strokeWidth}"><path d="M6.58727 11.8586C9.55061 11.8586 11.9529 9.45637 11.9529 6.49304C11.9529 3.5297 9.55061 1.12744 6.58727 1.12744C3.62394 1.12744 1.22168 3.5297 1.22168 6.49304C1.22168 9.45637 3.62394 11.8586 6.58727 11.8586Z" stroke="currentColor"></path><path d="M10.2991 10.3933L14.7783 14.8725" stroke="currentColor"></path></svg>` },
   'globe-outline': { size: 14, svg: strokeWidth => `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" fill="none" stroke-width="${strokeWidth}"><path d="M7.99986 14.0887C11.3626 14.0887 14.0886 11.3627 14.0886 7.99998C14.0886 4.63727 11.3626 1.91125 7.99986 1.91125C4.63715 1.91125 1.91113 4.63727 1.91113 7.99998C1.91113 11.3627 4.63715 14.0887 7.99986 14.0887Z" stroke="currentColor"></path><path d="M2.34619 8H13.6538" stroke="currentColor" stroke-linecap="square"></path><path d="M7.99976 14.0889C9.23509 14.0889 10.1743 11.3629 10.1743 8.00006C10.1743 4.63739 9.23509 1.91138 7.99976 1.91138" stroke="currentColor"></path><path d="M7.99973 14.0889C6.76445 14.0889 5.8252 11.3629 5.8252 8.00006C5.8252 4.63739 6.76445 1.91138 7.99973 1.91138" stroke="currentColor"></path></svg>` },
diff --git a/packages/client/ui-primitives/src/icons/index.tsx b/packages/client/ui-primitives/src/icons/index.tsx
index ef96e16203..a8f86d71ab 100644
--- a/packages/client/ui-primitives/src/icons/index.tsx
+++ b/packages/client/ui-primitives/src/icons/index.tsx
@@ -608,3 +608,9 @@ export const IconAppsAddOutlineRegular = appsAddIcon('regular')
 
 /** Three entry tiles and an add mark with 1.3px strokes. */
 export const IconAppsAddOutlineMedium = appsAddIcon('medium')
+
+/** Regular floppy-disk save action. */
+export const IconSaveOutlineRegular = productIcon('save-outline', 'regular')
+
+/** Medium floppy-disk save action. */
+export const IconSaveOutlineMedium = productIcon('save-outline', 'medium')
diff --git a/packages/client/ui-primitives/src/index.ts b/packages/client/ui-primitives/src/index.ts
index 67b77ddec5..13f9986965 100644
--- a/packages/client/ui-primitives/src/index.ts
+++ b/packages/client/ui-primitives/src/index.ts
@@ -33,7 +33,7 @@ export { Checkbox } from './Checkbox.tsx'
 export { Input } from './Input.tsx'
 export { InlineEditor } from './InlineEditor.tsx'
 export { Menu, MenuItemButton } from './Menu.tsx'
-export { MenuSurface } from './MenuSurface.tsx'
+export { MenuSurface, MENU_TRANSITION_MS } from './MenuSurface.tsx'
 export type { MenuSurfaceProps } from './MenuSurface.tsx'
 export { MenuGroup, observeStickyMenuGroups } from './MenuGroup.tsx'
 export type { MenuItemButtonProps, MenuEntry, MenuItem, MenuSeparator, MenuLabel } from './Menu.tsx'
@@ -118,7 +118,7 @@ export type {
 export { CodeBlock } from './markdown/CodeBlock.tsx'
 export type { CodeBlockProps } from './markdown/CodeBlock.tsx'
 export { JsonBlock } from './markdown/JsonBlock.tsx'
-export { MarkdownDelegateProvider } from './markdown/MarkdownDelegate.tsx'
+export { MarkdownDelegateProvider, useMarkdownDelegate } from './markdown/MarkdownDelegate.tsx'
 export type { MarkdownDelegate, MarkdownDelegateProviderProps, MarkdownExternalLinkHandler } from './markdown/MarkdownDelegate.tsx'
 export { DetailDocument, detailDocumentState, useDetailDocumentLabels } from './DetailDocument.tsx'
 export type { DetailDocumentCopy, DetailDocumentLabels, DetailDocumentRead, DetailDocumentState } from './DetailDocument.tsx'
@@ -137,3 +137,5 @@ export type { ImageLightboxLabels } from './ImageLightbox.tsx'
 export { QuotePreview } from './QuotePreview.tsx'
 export type { QuotePreviewProps, QuotePreviewRemoval } from './QuotePreview.tsx'
 export { formatQuoteText } from './markdown/quote-text.ts'
+
+export type { MarkdownMenuTarget } from './markdown/MarkdownDelegate.tsx'
diff --git a/packages/client/ui-primitives/src/markdown/MarkdownDelegate.tsx b/packages/client/ui-primitives/src/markdown/MarkdownDelegate.tsx
index f5477bd546..c070d67c35 100644
--- a/packages/client/ui-primitives/src/markdown/MarkdownDelegate.tsx
+++ b/packages/client/ui-primitives/src/markdown/MarkdownDelegate.tsx
@@ -1,6 +1,7 @@
 /** Consumer-owned navigation for Markdown links. */
 import { createContext, useContext, useMemo } from 'react'
-import type { ReactNode } from 'react'
+import type { HTMLAttributes, ReactNode } from 'react'
+import type { FileDragActions } from '../file-drag-actions.ts'
 import type { ImageLightboxLabels } from '../ImageLightbox.tsx'
 
 /**
@@ -9,14 +10,22 @@ import type { ImageLightboxLabels } from '../ImageLightbox.tsx'
  */
 export type MarkdownExternalLinkHandler = (href: string) => void
 
+/** Explicit object and viewport coordinates from the element owning a context gesture. */
+export type MarkdownMenuTarget =
+  | { kind: 'file'; path: string; line?: number }
+  | { kind: 'url'; url: string }
+  | { kind: 'image'; url: string; path?: string; name?: string; mediaType?: string }
+
 /** Navigation capabilities supplied by the nearest Markdown owner. */
 export interface MarkdownDelegate {
+  /** Open an object menu without executing its normal activation. */
+  readonly getTriggerProps?: ((target: MarkdownMenuTarget) => Pick<HTMLAttributes<HTMLElement>, 'onContextMenu' | 'onKeyDown' | 'tabIndex'>) | undefined
   /**
    * Image previews for decoded local paths in this owner's workspace. The renderer
    * appends a per-mount `load` query parameter to `api/file` route URLs.
    */
   readonly fileImages?: {
-    fileDrag: import('../file-drag-actions.ts').FileDragActions
+    fileDrag: FileDragActions
     resolve: (path: string) => string | undefined
     resourceAddress?: ((path: string) => string) | undefined
     labels: ImageLightboxLabels & { open: string; loading: string; failed: string }
@@ -49,8 +58,10 @@ export function MarkdownDelegateProvider({
   openExternalLink,
   openFile,
   fileImages,
+  getTriggerProps,
 }: MarkdownDelegateProviderProps): ReactNode {
-  const delegate = useMemo(() => ({ openExternalLink, openFile, fileImages }), [openExternalLink, openFile, fileImages])
+  const delegate = useMemo(() => ({ openExternalLink, openFile, fileImages, getTriggerProps }),
+    [openExternalLink, openFile, fileImages, getTriggerProps])
   return (
     <MarkdownDelegateContext.Provider value={delegate}>
       {children}
diff --git a/packages/client/ui-primitives/src/markdown/MarkdownText.tsx b/packages/client/ui-primitives/src/markdown/MarkdownText.tsx
index fac585e700..004c962963 100644
--- a/packages/client/ui-primitives/src/markdown/MarkdownText.tsx
+++ b/packages/client/ui-primitives/src/markdown/MarkdownText.tsx
@@ -176,7 +176,9 @@ class StreamingRenderer {
  * renderers, such as package READMEs. `textInteractionSource` marks the
  * existing root as a source for text selection interactions.
  * The provider's `openFile` enables local Markdown links in settled messages,
- * including `#L24` and `#L24-L30` destinations (ranges open at their first line).
+ * including `#L24` / `#L24-L30` fragments and `:24` / `:24-30` / `:24:5` suffixes
+ * (ranges open at their first line, columns are ignored, and invalid locations
+ * open only the file; see the README for URL/path classification).
  * @returns A GFM document with TeX math rendered through KaTeX; raw HTML never
  * renders as markup, and unsafe protocols are disabled. Local links without an opener remain text;
  * absolute HTTP(S) images render directly.
diff --git a/packages/client/ui-primitives/src/markdown/file-link.ts b/packages/client/ui-primitives/src/markdown/file-link.ts
index bb1ca89b0b..25c5edd88d 100644
--- a/packages/client/ui-primitives/src/markdown/file-link.ts
+++ b/packages/client/ui-primitives/src/markdown/file-link.ts
@@ -1,11 +1,24 @@
 /** Local Markdown destinations accepted by the file-preview callback. */
 
 /**
- * Decode a file destination and its optional GitHub-style line fragment.
- * Literal `?` and `#` in filenames must be percent-encoded.
+ * Recognize a relative, rooted, or absolute Windows path before URL parsing.
+ * @param value - A decoded or URI-normalized destination.
+ * @returns Whether a filesystem prefix makes the destination unambiguous.
+ */
+export function isExplicitFilePath(value: string): boolean {
+  return /^(?:[\\/]|\.{1,2}[\\/]|[a-z]:[\\/])/i.test(value)
+}
+
+/**
+ * Decode a file destination with a fragment, line range, or line/column suffix.
+ * Explicit relative, slash/backslash-rooted, and Windows drive paths take
+ * precedence over URLs. Other parseable absolute URLs are not file links.
+ * Fragments take precedence over colon suffixes; invalid locations open the
+ * file without selecting a line. Columns are consumed but not selected.
+ * Percent-encode literal `?`, `#`, and numeric colon suffixes in filenames.
  * @param value - Parsed Markdown link destination.
  * @returns A local path and optional first line, or undefined for URLs,
- * fragment-only links, queries, malformed escapes, or invalid line ranges.
+ * fragment-only links, queries, malformed escapes, or control characters.
  */
 export function parseFileLink(value: string): { path: string; line?: number } | undefined {
   const hash = value.indexOf('#')
@@ -18,15 +31,15 @@ export function parseFileLink(value: string): { path: string; line?: number } |
     // Malformed percent escapes cannot identify a file unambiguously.
     return undefined
   }
-  if (path.length === 0 || /[\u0000-\u001f\u007f]/.test(path)
-    || /^[\\/]{2}/.test(path)
-    || (/^[a-z][a-z\d+.-]*:/i.test(path) && !/^[a-z]:[\\/]/i.test(path))) return undefined
-  if (hash < 0) return { path }
-  const fragment = value.slice(hash + 1)
-  const match = /^L([1-9]\d*)(?:-L([1-9]\d*))?$/.exec(fragment)
-  if (match === null) return undefined
+  if (path.length === 0 || /[\u0000-\u001f\u007f]/.test(path)) return undefined
+  if (!isExplicitFilePath(path) && URL.canParse(path)) return undefined
+  const suffix = hash < 0 ? /:(\d+)(?::\d+|-(\d+))?$/.exec(destination) : null
+  if (suffix !== null) path = path.slice(0, -suffix[0].length)
+  if (path.length === 0) return undefined
+  const match = suffix ?? (hash < 0 ? null : /^L(\d+)(?:-L(\d+))?$/.exec(value.slice(hash + 1)))
+  if (match === null) return { path }
   const line = Number(match[1])
   const end = match[2] === undefined ? line : Number(match[2])
-  if (!Number.isSafeInteger(line) || !Number.isSafeInteger(end) || end < line) return undefined
+  if (!Number.isSafeInteger(line) || !Number.isSafeInteger(end) || line < 1 || end < line) return { path }
   return { path, line }
 }
diff --git a/packages/client/ui-primitives/src/markdown/render.tsx b/packages/client/ui-primitives/src/markdown/render.tsx
index 5da48f6651..3267902a4b 100644
--- a/packages/client/ui-primitives/src/markdown/render.tsx
+++ b/packages/client/ui-primitives/src/markdown/render.tsx
@@ -4,11 +4,11 @@
  * cache frozen blocks as React elements; the rendered DOM is pinned
  * byte-for-byte by `tests/fixtures/markdown-dom` and must not drift.
  *
- * External link and image destinations pass a protocol allowlist; settled
+ * External links reject executable and embedded-document protocols; settled
  * local file links use an explicit owner callback. Images additionally require
  * absolute HTTP(S), raw HTML renders as literal text (no HTML enters the
- * DOM), and KaTeX runs without trusted commands. Fragment-anchor URLs fail
- * the allowlist, so footnote references and back-references render as plain
+ * DOM), and KaTeX runs without trusted commands. Fragment-only URLs are not
+ * absolute, so footnote references and back-references render as plain
  * text rather than in-page links.
  *
  * Merge-extensible node unions fall through the documented default (render
@@ -16,6 +16,7 @@
  * may add node types this renderer has no mapping for.
  */
 
+import type { HTMLAttributes } from 'react'
 import { Fragment, createElement, useCallback, useState } from 'react'
 import type { Key, ReactNode } from 'react'
 import clsx from 'clsx'
@@ -24,7 +25,7 @@ import type {} from 'mdast-util-math'
 import { normalizeUri } from 'micromark-util-sanitize-uri'
 import type { CodeToolbarLabels } from '../CodeToolbar.tsx'
 import { CodeBlock } from './CodeBlock.tsx'
-import { parseFileLink } from './file-link.ts'
+import { isExplicitFilePath, parseFileLink } from './file-link.ts'
 import { renderTexToReact } from './katex.tsx'
 import { LinkIconMedium, classifyLinkPath } from '../LinkIcon.tsx'
 import { useMarkdownDelegate } from './MarkdownDelegate.tsx'
@@ -52,14 +53,16 @@ export interface MarkdownLabels {
 }
 
 function sanitizeUrl(url: string): string {
+  if (isExplicitFilePath(url)) return ''
   try {
     switch (new URL(url).protocol) {
-      case 'http:':
-      case 'https:':
-      case 'mailto:':
-        return url
-      default:
+      case 'javascript:':
+      case 'vbscript:':
+      case 'data:':
+      case 'blob:':
         return ''
+      default:
+        return url
     }
   } catch {
     // Relative and otherwise unparsable destinations are disallowed alongside
@@ -207,7 +210,12 @@ export interface MarkdownFileMentions {
    * @returns The opener with its accessible label and full-path title, or
    * undefined when the token names no known file — it then stays inert code.
    */
-  resolve(value: string): { open: () => void; label: string; title: string } | undefined
+  resolve(value: string): {
+    open: () => void
+    contextMenuProps?: Pick<HTMLAttributes<HTMLElement>, 'onContextMenu' | 'onKeyDown' | 'tabIndex'>
+    label: string
+    title: string
+  } | undefined
 }
 
 /**
@@ -355,6 +363,7 @@ function renderNode(node: Md.RootContent, key: Key, context: MarkdownRenderConte
               title={mention.title}
               aria-label={mention.label}
               onClick={mention.open}
+              {...mention.contextMenuProps}
             >
               <LinkIconMedium kind={classifyLinkPath(value)} className={css.linkIcon} />
               {value}
@@ -572,7 +581,7 @@ function anchorWrapsOnlyImages(children: Md.PhrasingContent[]): boolean {
   return children.length > 0 && children.every(child => child.type === 'image' || child.type === 'imageReference')
 }
 
-/** Anchor over an already-authored href: allowlisted or unwrapped, with optional owner navigation for HTTP(S). */
+/** Anchor over a safe absolute href, with optional owner navigation for HTTP(S). */
 function renderSafeLink(href: string, children: ReactNode[], key: Key, glyph = true): ReactNode {
   const safeHref = sanitizeUrl(href)
   if (safeHref === '') return <Fragment key={key}>{children}</Fragment>
@@ -584,12 +593,13 @@ function MarkdownAnchor({ href, glyph, children }: {
   readonly glyph: boolean
   readonly children: ReactNode[]
 }): ReactNode {
-  const { openExternalLink } = useMarkdownDelegate()
+  const { openExternalLink, getTriggerProps } = useMarkdownDelegate()
   const external = ['http:', 'https:'].includes(new URL(href).protocol)
   const open = external ? openExternalLink : undefined
   return (
     <a
       href={href}
+      {...external ? getTriggerProps?.({ kind: 'url', url: href }) : {}}
       {...(external ? { target: '_blank', rel: 'noopener noreferrer' } : {})}
       onClick={open === undefined ? undefined : (event) => {
         if (event.button !== 0 || event.metaKey || event.ctrlKey || event.shiftKey || event.altKey) return
@@ -605,8 +615,9 @@ function MarkdownAnchor({ href, glyph, children }: {
 
 /** Local destinations use the scoped file delegate after settlement. */
 function renderAnchor(url: string, children: ReactNode[], key: Key, glyph = true, streaming = false): ReactNode {
-  const file = streaming ? undefined : parseFileLink(url)
+  const file = parseFileLink(url)
   if (file !== undefined) {
+    if (streaming) return <Fragment key={key}>{children}</Fragment>
     return <MarkdownFileLink key={key} file={file} glyph={glyph}>{children}</MarkdownFileLink>
   }
   return renderSafeLink(normalizeUri(url), children, key, glyph)
@@ -617,7 +628,7 @@ function MarkdownFileLink({ file, glyph, children }: {
   readonly glyph: boolean
   readonly children: ReactNode[]
 }): ReactNode {
-  const { openFile, fileImages } = useMarkdownDelegate()
+  const { openFile, fileImages, getTriggerProps } = useMarkdownDelegate()
   const [load] = useState(nextImageLoad)
   if (openFile === undefined) return <>{children}</>
   // Pure-image anchors already contain their preview and keep one navigation target.
@@ -629,6 +640,7 @@ function MarkdownFileLink({ file, glyph, children }: {
       type="button"
       className={clsx(css.fileMention, css.fileLink)}
       title={src === undefined ? file.path : undefined}
+      {...getTriggerProps?.({ kind: 'file', ...file })}
       onClick={() => { openFile(file.path, file.line === undefined ? undefined : { line: file.line }) }}
     >
       {glyph && <LinkIconMedium kind={classifyLinkPath(file.path)} className={css.linkIcon} />}
@@ -685,14 +697,16 @@ function LoadedMarkdownImage({ src, alt, destination, preview }: {
   destination: string
   preview: ReturnType<typeof useMarkdownDelegate>['fileImages']
 }): ReactNode {
+  const { getTriggerProps } = useMarkdownDelegate()
   const [failed, setFailed] = useState(false)
   const [open, setOpen] = useState(false)
   const close = useCallback(() => { setOpen(false) }, [])
   if (failed) return <span className={css.imageAlt}>{preview === undefined ? '' : `${preview.labels.failed} · `}{alt || destination}</span>
+  const file = parseFileLink(destination)
+  const contextMenuProps = getTriggerProps?.({ kind: 'image', url: src, ...(file === undefined ? {} : { path: file.path }) })
   const imageProps = { className: css.image, src, alt, onError: () => { setFailed(true) },
     loading: 'lazy' as const, decoding: 'async' as const, referrerPolicy: 'no-referrer' as const }
-  if (preview === undefined) return <img {...imageProps} />
-  const file = parseFileLink(destination)
+  if (preview === undefined) return <img {...imageProps} {...contextMenuProps} />
   const localFileName = file?.path.split(/[\\/]/u).at(-1)
   const urlFileName = destination.split('/').at(-1)?.split(/[?#]/u)[0]
   const exportName = localFileName || urlFileName || 'image'
@@ -704,9 +718,10 @@ function LoadedMarkdownImage({ src, alt, destination, preview }: {
   />
   return <>
     <button type="button" className={css.imageButton} title={preview.labels.open}
+      {...contextMenuProps}
       aria-label={alt ? `${preview.labels.open}: ${alt}` : preview.labels.open}
       onClick={() => { setOpen(true) }}>{img}</button>
-    {open && <ImageLightbox src={src} alt={alt} labels={preview.labels} onClose={close} />}
+    {open && <ImageLightbox src={src} alt={alt} labels={preview.labels} onClose={close} contextMenuProps={contextMenuProps} />}
   </>
 }
 
@@ -753,7 +768,7 @@ function renderFootnoteReference(
   const seen = context.footnoteCounts.get(id)
   if (seen === undefined) context.footnoteOrder.push(id)
   context.footnoteCounts.set(id, (seen ?? 0) + 1)
-  // The in-page anchor fails the protocol allowlist, so only the numbered
+  // The in-page anchor is not an absolute URL, so only the numbered
   // superscript renders (matching the replaced pipeline's unwrapped link).
   return <sup key={key}>{String(context.footnoteOrder.indexOf(id) + 1)}</sup>
 }
diff --git a/packages/client/ui-primitives/src/useModalLayer.ts b/packages/client/ui-primitives/src/useModalLayer.ts
index dff4a22697..2942c992f0 100644
--- a/packages/client/ui-primitives/src/useModalLayer.ts
+++ b/packages/client/ui-primitives/src/useModalLayer.ts
@@ -45,9 +45,17 @@ const focusable = 'button:not(:disabled), input:not(:disabled), textarea:not(:di
  */
 export function useModalLayer(dialog: RefObject<HTMLElement | null>, open: boolean, onClose: () => void): void {
   const close = useRef(onClose)
+  const pendingRestore = useRef<HTMLElement | undefined>(undefined)
   close.current = onClose
   useLayoutEffect(() => {
+    const target = pendingRestore.current
+    pendingRestore.current = undefined
     const element = dialog.current
+    // Restore only focus left inside the retained dialog, preserving the owner's chosen target.
+    if (!open && element?.contains(element.ownerDocument.activeElement)
+      && target?.isConnected && !target.closest('[inert], [hidden]') && !isBehindModal(target)) {
+      focusWithoutRing(target, { preventScroll: true })
+    }
     if (!open || element === null) return
     const document = element.ownerDocument
     const composition = observeComposition(document)
@@ -90,7 +98,10 @@ export function useModalLayer(dialog: RefObject<HTMLElement | null>, open: boole
       if (stack.length === 0) layers.delete(document)
       if (wasTop) {
         const target = previous instanceof HTMLElement && previous.isConnected ? previous : stack.at(-1)?.element
-        if (target !== undefined) focusWithoutRing(target)
+        if (target !== undefined) {
+          pendingRestore.current = target
+          focusWithoutRing(target)
+        }
       }
     }
   }, [dialog, open])
diff --git a/packages/client/ui-primitives/src/user-text.tsx b/packages/client/ui-primitives/src/user-text.tsx
index 20d29f3b84..150448313c 100644
--- a/packages/client/ui-primitives/src/user-text.tsx
+++ b/packages/client/ui-primitives/src/user-text.tsx
@@ -1,4 +1,5 @@
 /** Inline text and reference presentation; business rules supply resolved JSON data and actions. */
+import type { HTMLAttributes } from 'react'
 import type { ReactNode } from 'react'
 import clsx from 'clsx'
 import { ReferenceIconRegular, type ReferenceIconKind } from './ReferenceIcon.tsx'
@@ -22,6 +23,8 @@ export function UserTextRun({ text }: UserTextRunProps): ReactNode {
 /** Presentation selected by a reference renderer, independent of its matching grammar. */
 export interface ReferenceChipProps {
   readonly appearance: ReferenceIconKind | 'skill' | 'command'
+  /** Explicit object-menu gesture bindings; absent for display-only references. */
+  readonly contextMenuProps?: Pick<HTMLAttributes<HTMLElement>, 'onContextMenu' | 'onKeyDown' | 'tabIndex'>
   readonly label: string
   readonly title: string
   /** Absent for display-only references and previews. */
@@ -34,7 +37,9 @@ export interface ReferenceChipProps {
  * @param props - resolved visual fields and optional action from the owning renderer.
  * @returns an inline label, or a keyboard-accessible button when activation is supplied.
  */
-export function ReferenceChip({ appearance, label, title, onActivate }: ReferenceChipProps): ReactNode {
+export function ReferenceChip({
+  appearance, label, title, onActivate, contextMenuProps,
+}: ReferenceChipProps): ReactNode {
   const slash = appearance === 'skill' || appearance === 'command'
   const contents = <>
     {!slash && <ReferenceIconRegular kind={appearance} size={16} className={css.refIcon} />}
@@ -42,9 +47,15 @@ export function ReferenceChip({ appearance, label, title, onActivate }: Referenc
   </>
   const className = clsx(css.refChip, slash && css.slashChip)
   return onActivate === undefined
-    ? <span className={className} data-ref-chip={appearance} title={title}>{contents}</span>
+    ? <span
+      {...contextMenuProps}
+      className={className}
+      data-ref-chip={appearance}
+      title={title}
+    >{contents}</span>
     : <button
       type="button"
+      {...contextMenuProps}
       className={clsx(className, markdownCss.fileMention)}
       data-ref-chip={appearance}
       title={title}
diff --git a/packages/client/ui-primitives/tests/context-menu.client.spec.tsx b/packages/client/ui-primitives/tests/context-menu.client.spec.tsx
new file mode 100644
index 0000000000..4639f49e40
--- /dev/null
+++ b/packages/client/ui-primitives/tests/context-menu.client.spec.tsx
@@ -0,0 +1,105 @@
+// @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
+import { cleanup, fireEvent, render, waitFor } from '@testing-library/react'
+import { afterEach, expect, it, vi } from 'vitest'
+import { Menu, MenuItemButton } from '../src/Menu.tsx'
+import { ReferenceChip } from '../src/user-text.tsx'
+
+afterEach(() => { vi.restoreAllMocks(); cleanup(); document.documentElement.style.removeProperty('--dsh-frame-top-clearance') })
+
+it('places pointer menus at the cursor above the frame inset and focuses after portal placement', async () => {
+  document.documentElement.style.setProperty('--dsh-frame-top-clearance', '96px')
+  const close = vi.fn()
+  const view = render(<Menu open portal autoFocus contextual anchor={null} onClose={close}
+    getAnchorRect={() => new DOMRect(200, 20, 0, 0)} items={[{ id: 'copy', label: 'Copy' }]} />)
+  const menu = view.getByRole('menu')
+  expect(menu.style.top).toBe('24px')
+  await waitFor(() => { expect(document.activeElement).toBe(view.getByRole('menuitem')) })
+  fireEvent.pointerDown(document.body, { button: 2 })
+  expect(close).not.toHaveBeenCalled()
+  fireEvent.pointerDown(document.body, { button: 0 })
+  expect(close).toHaveBeenCalledOnce()
+})
+
+it('groups data icons per divider, preserves component rows, and makes exit frames inert', () => {
+  const props = { open: true, portal: true, contextual: true, anchor: null, onClose: vi.fn(),
+    items: [{ id: 'first', label: 'First', icon: <svg /> }, { id: 'second', label: 'Second' },
+      { type: 'separator' as const, id: 'split' }, { id: 'third', label: 'Third' }] }
+  const view = render(<Menu {...props}><MenuItemButton onSelect={() => {}}>Plugin</MenuItemButton></Menu>)
+  expect(view.getByRole('menuitem', { name: 'First' }).firstElementChild?.getAttribute('aria-hidden') === 'true').toBe(true)
+  expect(view.getByRole('menuitem', { name: 'Second' }).firstElementChild?.getAttribute('aria-hidden') === 'true').toBe(true)
+  expect(view.getByRole('menuitem', { name: 'Third' }).firstElementChild?.getAttribute('aria-hidden') === 'true').toBe(false)
+  expect(view.getByRole('menuitem', { name: 'Plugin' }).firstElementChild?.getAttribute('aria-hidden') === 'true').toBe(false)
+  view.rerender(<Menu {...props} exiting="replace" />)
+  expect(view.queryByRole('menu')).toBeNull()
+  expect(document.querySelector('[data-menu-phase="replace"]')).not.toBeNull()
+})
+
+it('aligns data groups, footers and submenus independently without modifying slot rows', () => {
+  const hasColumn = (row: HTMLElement) => row.firstElementChild?.getAttribute('aria-hidden') === 'true'
+  const view = render(<Menu open contextual anchor={null} onClose={() => {}}
+    items={[{ id: 'plain', label: 'Plain' }, { type: 'separator', id: 'split' },
+      { type: 'label', id: 'heading', text: 'Actions' },
+      { id: 'icon', label: 'Icon', icon: <svg /> }, { id: 'aligned', label: 'Aligned' },
+      { id: 'parent', label: 'Parent', submenu: [
+        { id: 'child', label: 'Child' }, { type: 'separator', id: 'subsplit' },
+        { id: 'subicon', label: 'Sub icon', icon: <svg /> }, { id: 'subaligned', label: 'Sub aligned' },
+      ] }]}
+    footer={[{ id: 'footer', label: 'Footer' }, { id: 'footerIcon', label: 'Footer icon', icon: <svg /> }]}
+  >
+    <MenuItemButton onSelect={() => {}}>Plugin plain</MenuItemButton>
+    <MenuItemButton icon={<svg />} onSelect={() => {}}>Plugin icon</MenuItemButton>
+  </Menu>)
+  expect(hasColumn(view.getByRole('menuitem', { name: 'Plain' }))).toBe(false)
+  expect(hasColumn(view.getByRole('menuitem', { name: 'Aligned' }))).toBe(true)
+  expect(view.getByRole('menuitem', { name: 'Aligned' }).firstElementChild?.textContent).toBe('')
+  expect(hasColumn(view.getByRole('menuitem', { name: 'Footer' }))).toBe(true)
+  expect(hasColumn(view.getByRole('menuitem', { name: 'Plugin plain' }))).toBe(false)
+  expect(view.getByRole('menuitem', { name: 'Plugin icon' }).querySelector('svg')).not.toBeNull()
+  fireEvent.focus(view.getByRole('menuitem', { name: 'Parent' }))
+  expect(hasColumn(view.getByRole('menuitem', { name: 'Child' }))).toBe(false)
+  expect(hasColumn(view.getByRole('menuitem', { name: 'Sub aligned' }))).toBe(true)
+  view.rerender(<Menu open contextual anchor={null} onClose={() => {}}
+    items={[{ id: 'icon', label: 'Icon', icon: <svg /> }, { id: 'plain', label: 'Plain' }]}
+    footer={[{ id: 'footer', label: 'Footer' }]} />)
+  expect(hasColumn(view.getByRole('menuitem', { name: 'Plain' }))).toBe(true)
+  expect(hasColumn(view.getByRole('menuitem', { name: 'Footer' }))).toBe(false)
+  view.rerender(<Menu open anchor={null} onClose={() => {}}
+    items={[{ id: 'icon', label: 'Icon', icon: <svg /> }, { id: 'plain', label: 'Plain' }]}
+    footer={[{ id: 'footer', label: 'Footer' }]} />)
+  expect(hasColumn(view.getByRole('menuitem', { name: 'Plain' }))).toBe(false)
+  expect(hasColumn(view.getByRole('menuitem', { name: 'Footer' }))).toBe(false)
+})
+
+it('keeps a menu-only reference focusable without inventing an activation action', () => {
+  const open = vi.fn()
+  const view = render(<ReferenceChip appearance="file" label="Reference" title="File reference" contextMenuProps={contextMenuHook(open)().getTriggerProps({ kind: 'image', value: { url: 'file' } })} />)
+  const chip = view.getByText('Reference')
+  expect(chip.tabIndex).toBe(0)
+  expect(chip.tagName).toBe('SPAN')
+  fireEvent.keyDown(chip, { key: 'F10', shiftKey: true })
+  expect(open).toHaveBeenCalledOnce()
+  expect(document.activeElement).toBe(chip)
+})
+
+it('keeps reference activation separate from selection and repeated clicks', () => {
+  const activate = vi.fn()
+  const open = vi.fn()
+  const view = render(<ReferenceChip appearance="file" label="Reference" title="Reference" onActivate={activate} contextMenuProps={contextMenuHook(open)().getTriggerProps({ kind: 'image', value: { url: 'file' } })} />)
+  const chip = view.getByRole('button')
+  fireEvent.click(chip, { detail: 2 })
+  const selection = document.getSelection()!
+  selection.removeAllRanges()
+  const range = document.createRange()
+  range.selectNodeContents(chip)
+  selection.addRange(range)
+  try {
+    expect(selection.isCollapsed).toBe(false)
+    fireEvent.click(chip, { detail: 1 })
+    expect(activate).not.toHaveBeenCalled()
+    fireEvent.contextMenu(chip)
+    expect(open).toHaveBeenCalledOnce()
+  } finally { selection.removeAllRanges() }
+  fireEvent.click(chip, { detail: 1 })
+  expect(activate).toHaveBeenCalledOnce()
+})
diff --git a/packages/client/ui-primitives/tests/hover-card.client.spec.tsx b/packages/client/ui-primitives/tests/hover-card.client.spec.tsx
index ddc6718159..56e4ef5044 100644
--- a/packages/client/ui-primitives/tests/hover-card.client.spec.tsx
+++ b/packages/client/ui-primitives/tests/hover-card.client.spec.tsx
@@ -121,6 +121,22 @@ describe('HoverCard', () => {
     expect(screen.getByRole('tooltip').textContent).toBe('Details')
   })
 
+  it.each(['inert', 'hidden'])('dismisses a portal when its retained anchor ancestor becomes %s', async (attribute) => {
+    const view = render(<section><HoverCard anchor={<span>row</span>} content={<div>card body</div>} /></section>)
+    const row = screen.getByText('row')
+    const wrapper = row.parentElement!
+    fireEvent.pointerEnter(wrapper)
+    act(() => { vi.advanceTimersByTime(500) })
+    expect(screen.getByText('card body')).toBeTruthy()
+    await act(async () => { view.container.firstElementChild!.setAttribute(attribute, '') })
+    expect(screen.queryByText('card body')).toBeNull()
+    expect(screen.getByText('row')).toBe(row)
+    view.container.firstElementChild!.removeAttribute(attribute)
+    fireEvent.pointerEnter(wrapper)
+    act(() => { vi.advanceTimersByTime(500) })
+    expect(screen.getByText('card body')).toBeTruthy()
+  })
+
   it('opens after the dwell delay, positioned right of the anchor', () => {
     const { wrapper } = mount()
     fireEvent.pointerEnter(wrapper)
diff --git a/packages/client/ui-primitives/tests/icons.client.spec.tsx b/packages/client/ui-primitives/tests/icons.client.spec.tsx
index a5250f1126..00ba3a3bf1 100644
--- a/packages/client/ui-primitives/tests/icons.client.spec.tsx
+++ b/packages/client/ui-primitives/tests/icons.client.spec.tsx
@@ -27,8 +27,8 @@ function artwork(glyph: IconGlyph, weight: IconWeight): Document {
 }
 
 describe('product icon set', () => {
-  it('exports regular and medium variants for all 96 public glyphs', () => {
-    expect(iconNames.length).toBe(192)
+  it('exports regular and medium variants for all 97 public glyphs', () => {
+    expect(iconNames.length).toBe(194)
     expect(iconNames.some(name => /\d+$/.test(name))).toBe(false)
     const regular = iconNames.filter(name => name.endsWith('Regular')).map(name => name.slice(0, -'Regular'.length))
     const medium = iconNames.filter(name => name.endsWith('Medium')).map(name => name.slice(0, -'Medium'.length))
diff --git a/packages/client/ui-primitives/tests/image-lightbox.client.spec.tsx b/packages/client/ui-primitives/tests/image-lightbox.client.spec.tsx
index 93fd5a5c4a..e4e613cf17 100644
--- a/packages/client/ui-primitives/tests/image-lightbox.client.spec.tsx
+++ b/packages/client/ui-primitives/tests/image-lightbox.client.spec.tsx
@@ -54,3 +54,19 @@ describe('ImageLightbox', () => {
     expect(onClose).toHaveBeenCalledTimes(1)
   })
 })
+
+it('leaves Escape to an open context menu before closing the image', () => {
+  const onClose = vi.fn()
+  const view = render(<ImageLightbox src="blob:original" alt="Image" labels={labels} onClose={onClose} />)
+  const menu = document.createElement('div')
+  menu.setAttribute('role', 'menu')
+  menu.tabIndex = 0
+  document.body.append(menu)
+  menu.focus()
+  try {
+    fireEvent.keyDown(view.getByRole('button'), { key: 'Escape' })
+    expect(onClose).not.toHaveBeenCalled()
+  } finally { menu.remove() }
+  fireEvent.keyDown(view.getByRole('button'), { key: 'Escape' })
+  expect(onClose).toHaveBeenCalledOnce()
+})
diff --git a/packages/client/ui-primitives/tests/markdown-file-links.client.spec.tsx b/packages/client/ui-primitives/tests/markdown-file-links.client.spec.tsx
index 1b29020f20..3b15be8b69 100644
--- a/packages/client/ui-primitives/tests/markdown-file-links.client.spec.tsx
+++ b/packages/client/ui-primitives/tests/markdown-file-links.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { cleanup, fireEvent, render } from '@testing-library/react'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { MarkdownDelegateProvider } from '../src/index.ts'
@@ -10,6 +11,38 @@ afterEach(cleanup)
 describe('Markdown file links', () => {
   it.each([
     ['src/index.ts', 'src/index.ts', undefined],
+    ['src/index.ts:24', 'src/index.ts', { line: 24 }],
+    ['/workspace/src/index.ts:24', '/workspace/src/index.ts', { line: 24 }],
+    ['./README:24', './README', { line: 24 }],
+    ['./Makefile:12', './Makefile', { line: 12 }],
+    ['src/index.ts:24:5', 'src/index.ts', { line: 24 }],
+    ['src/index.ts:24:0', 'src/index.ts', { line: 24 }],
+    ['src/index.ts:0:5', 'src/index.ts', undefined],
+    ['src/index.ts:0', 'src/index.ts', undefined],
+    ['src/index.ts:30-24', 'src/index.ts', undefined],
+    ['src/index.ts:1-0', 'src/index.ts', undefined],
+    ['src/index.ts:9007199254740992', 'src/index.ts', undefined],
+    ['src/index.ts:1-9007199254740992', 'src/index.ts', undefined],
+    ['//server/file:24', '//server/file', { line: 24 }],
+    ['%5C%5Cserver%5Cfile:24', '\\\\server\\file', { line: 24 }],
+    ['%5Cwork%5Cfile:24', '\\work\\file', { line: 24 }],
+    ['../index.ts:24', '../index.ts', { line: 24 }],
+    ['./index.ts:24', './index.ts', { line: 24 }],
+    ['index%2Ets', 'index.ts', undefined],
+    ['file.ts#heading', 'file.ts', undefined],
+    ['file.ts#L0', 'file.ts', undefined],
+    ['file.ts#L3-L2', 'file.ts', undefined],
+    ['file.ts#L9007199254740992', 'file.ts', undefined],
+    ['file.ts#L1-L9007199254740992', 'file.ts', undefined],
+    ['file.ts#L024', 'file.ts', { line: 24 }],
+    ['src/index.ts:024', 'src/index.ts', { line: 24 }],
+    ['../docs/My%20Notes.md:24-30', '../docs/My Notes.md', { line: 24 }],
+    ['C:/work/file.ts:2', 'C:/work/file.ts', { line: 2 }],
+    ['C:%5Cwork%5Cfile.ts:2-3', 'C:\\work\\file.ts', { line: 2 }],
+    ['docs/notes%3A24', 'docs/notes:24', undefined],
+    ['docs/notes%3A24:30', 'docs/notes:24', { line: 30 }],
+    ['docs/notes:24#L3', 'docs/notes:24', { line: 3 }],
+    ['docs/notes:review', 'docs/notes:review', undefined],
     ['/workspace/src/index.ts#L24', '/workspace/src/index.ts', { line: 24 }],
     ['../docs/My%20Notes.md#L24-L30', '../docs/My Notes.md', { line: 24 }],
     ['C:/work/file.ts#L2', 'C:/work/file.ts', { line: 2 }],
@@ -116,11 +149,10 @@ describe('Markdown file links', () => {
   })
 
   it.each([
-    '//example.com/file', '%2F%2Fexample.com/file', '%5C%5Cserver%5Cfile',
-    'javascript:alert', 'data:text/plain,hi', 'file:///etc/passwd', 'vscode:open',
-    '%6Aavascript:alert', '#L2', 'file.ts?raw=1', 'file%ZZ.ts', 'file%00.ts',
-    'file.ts#heading', 'file.ts#L0', 'file.ts#L3-L2',
-    'file.ts#L9007199254740992', 'file.ts#L1-L9007199254740992',
+    'javascript:alert', 'data:text/plain,hi', 'vbscript:msgbox',
+    '%6Aavascript:alert', '#L2', 'file.ts?raw=1', 'file%ZZ.ts', 'file%00.ts', ':24',
+    'data:123', 'blob:123', 'javascript:123', '%6Aavascript:123',
+    'javascript:alert:24', 'index%2Ets:24', 'C:/file.ts?raw=1',
   ])('keeps unsupported destination %s inert', (target) => {
     const openFile = vi.fn()
     const view = render(
@@ -133,6 +165,23 @@ describe('Markdown file links', () => {
     expect(openFile).not.toHaveBeenCalled()
   })
 
+  it.each([
+    'mailto:10086', 'https:123', 'http:123', 'https://example.com:8080',
+    'index.ts:24', 'example.com:8080', 'localhost:3000', 'Makefile:12', 'tel:10086',
+    'vscode:open', 'file:///etc/passwd:24', 'custom.scheme:value:24', 'C:123',
+  ])(
+    'preserves external destination %s with and without a file opener', (target) => {
+      const openFile = vi.fn()
+      const markdown = <MarkdownText text={`[external](${target})`} />
+      const view = render(<MarkdownDelegateProvider openFile={openFile}>{markdown}</MarkdownDelegateProvider>)
+      expect(view.getByRole('link', { name: 'external' }).getAttribute('href')).toBe(target)
+      expect(view.queryByRole('button')).toBeNull()
+      expect(openFile).not.toHaveBeenCalled()
+      view.rerender(markdown)
+      expect(view.getByRole('link', { name: 'external' }).getAttribute('href')).toBe(target)
+    },
+  )
+
   it('preserves external links and leaves local links inert without an opener', () => {
     const view = render(<MarkdownText text={'[web](https://example.com/a#L1) [mail](mailto:a@example.com) [file](src/a.ts)'} />)
     expect(view.getByRole('link', { name: 'web' }).getAttribute('target')).toBe('_blank')
@@ -167,6 +216,33 @@ describe('Markdown file links', () => {
     expect(first).toHaveBeenCalledOnce()
   })
 
+  it.each(['C:/file.ts:24', '%5C%5Cserver%5Cfile:24', './file.ts:24:5'])(
+    'leaves file destination %s inert while streaming', (target) => {
+      const view = render(<MarkdownDelegateProvider openFile={vi.fn()}>
+        <MarkdownText text={`[source](${target})`} streaming />
+      </MarkdownDelegateProvider>)
+      expect(view.getByText('source')).toBeTruthy()
+      expect(view.container.querySelector('a, button')).toBeNull()
+    },
+  )
+
+  it.each([
+    'JaVaScRiPt:alert(1)', 'javascript&#58;alert(1)', 'java&#x09;script:alert(1)',
+    'vbscript:msgbox(1)', 'data:text/html,hello', 'blob:https://example.com/id',
+  ])('blocks active-content URL %s in settled and streaming messages', (target) => {
+    const openFile = vi.fn()
+    const openExternalLink = vi.fn()
+    const content = (streaming: boolean) => <MarkdownDelegateProvider openFile={openFile} openExternalLink={openExternalLink}>
+      <MarkdownText text={`[source](${target})`} streaming={streaming} />
+    </MarkdownDelegateProvider>
+    const view = render(content(false))
+    expect(view.container.querySelector('a, button')).toBeNull()
+    view.rerender(content(true))
+    expect(view.container.querySelector('a, button')).toBeNull()
+    expect(openFile).not.toHaveBeenCalled()
+    expect(openExternalLink).not.toHaveBeenCalled()
+  })
+
   it('routes file and HTTP(S) links through the same provider', () => {
     const openFile = vi.fn()
     const openExternalLink = vi.fn()
@@ -208,3 +284,39 @@ describe('Markdown file links', () => {
     expect(outer).not.toHaveBeenCalled()
   })
 })
+
+it.each(['src/main.ts#L42', 'src/main.ts:42', 'src/main.ts:42:5', 'src/main.ts:42-48'])(
+  'captures %s and other link targets without activating them; linked images take priority', (path) => {
+    const openFile = vi.fn(), openExternalLink = vi.fn(), openContextMenu = vi.fn()
+    const view = render(<MarkdownDelegateProvider {...{ openFile, openExternalLink }}
+      getTriggerProps={contextMenuHook(openContextMenu)().getTriggerProps}>
+      <MarkdownText text={`[file](${path}) [web](https://example.com/a?q=1#part) [![picture](https://example.com/original.gif)](https://example.com/target)`} />
+    </MarkdownDelegateProvider>)
+    fireEvent.contextMenu(view.getByRole('button', { name: 'file' }), { clientX: 2, clientY: 3 })
+    expect(openContextMenu).toHaveBeenLastCalledWith({ kind: 'file', path: 'src/main.ts', line: 42 }, { x: 2, y: 3 })
+    fireEvent.contextMenu(view.getByRole('link', { name: 'web' }))
+    expect(openContextMenu).toHaveBeenLastCalledWith({ kind: 'url', url: 'https://example.com/a?q=1#part' }, expect.any(Object))
+    openContextMenu.mockClear()
+    fireEvent.contextMenu(view.getByRole('img', { name: 'picture' }))
+    expect(openContextMenu).toHaveBeenCalledExactlyOnceWith({ kind: 'image', url: 'https://example.com/original.gif' }, expect.any(Object))
+    expect(openFile).not.toHaveBeenCalled()
+    expect(openExternalLink).not.toHaveBeenCalled()
+  },
+)
+
+it('passes keyboard-positioned produced-file menus and local image identities to their owners', () => {
+  const openMenu = vi.fn(), openContextMenu = vi.fn()
+  const view = render(<MarkdownDelegateProvider getTriggerProps={contextMenuHook(openContextMenu)().getTriggerProps}>
+    <MarkdownText text={'`report.svg` ![local](out/report.svg)'}
+      fileMentions={{ resolve: () => ({
+        title: 'out/report.svg', label: 'Report', open: vi.fn(),
+        contextMenuProps: contextMenuHook((_target, point) => { openMenu(point) })()
+          .getTriggerProps({ kind: 'image', value: { url: 'unused' } }),
+      }) }}
+      pathImages={{ resolve: () => 'blob:local' }} />
+  </MarkdownDelegateProvider>)
+  fireEvent.contextMenu(view.getByRole('button', { name: 'Report' }), { clientX: 5, clientY: 6 })
+  expect(openMenu).toHaveBeenCalledWith({ x: 5, y: 6 })
+  fireEvent.contextMenu(view.getByRole('img'))
+  expect(openContextMenu).toHaveBeenCalledWith({ kind: 'image', url: 'blob:local', path: 'out/report.svg' }, { x: 0, y: 0 })
+})
diff --git a/packages/client/ui-primitives/tests/menu-anchor-visibility.client.spec.tsx b/packages/client/ui-primitives/tests/menu-anchor-visibility.client.spec.tsx
new file mode 100644
index 0000000000..577dad9a9d
--- /dev/null
+++ b/packages/client/ui-primitives/tests/menu-anchor-visibility.client.spec.tsx
@@ -0,0 +1,65 @@
+// @vitest-environment jsdom
+/** A portalled menu follows its anchor's interactive lifetime. */
+import { useRef, useState } from 'react'
+import { act, cleanup, render, screen } from '@testing-library/react'
+import { afterEach, beforeEach, expect, it, vi } from 'vitest'
+import { Menu } from '../src/Menu.tsx'
+
+let frames: Map<number, FrameRequestCallback>
+beforeEach(() => {
+  frames = new Map()
+  let next = 0
+  vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) => { frames.set(++next, callback); return next })
+  vi.stubGlobal('cancelAnimationFrame', (id: number) => { frames.delete(id) })
+})
+afterEach(() => { cleanup(); vi.unstubAllGlobals() })
+
+it.each(['inert', 'hidden'].flatMap(attribute => [false, true].map(contextual => ({ attribute, contextual }))))(
+  'closes when the retained anchor becomes $attribute with contextual=$contextual', ({ attribute, contextual }) => {
+    function Fixture() {
+      const [open, setOpen] = useState(true)
+      const trigger = useRef<HTMLButtonElement>(null)
+      const menu = <Menu open={open} onClose={() => { setOpen(false) }} portal contextual={contextual}
+        returnFocus={contextual ? () => trigger.current : undefined}
+        anchor={contextual ? null : <button>Open</button>} items={[{ id: 'copy', label: 'Copy' }]} />
+      return <><div data-testid="owner">{contextual ? <button ref={trigger}>Open</button> : menu}</div>
+        {contextual && menu}</>
+    }
+    const view = render(<Fixture />)
+    expect(screen.getByRole('menu')).toBeTruthy()
+    view.getByTestId('owner').setAttribute(attribute, '')
+    act(() => { for (const callback of [...frames.values()]) callback(0) })
+    expect(screen.queryByRole('menu')).toBeNull()
+    expect(view.getByTestId('owner').isConnected).toBe(true)
+  })
+
+it('does not restart a contextual dismissal while its original control remains inert', () => {
+  const close = vi.fn()
+  function Fixture() {
+    const [exiting, setExiting] = useState<'dismiss'>()
+    const trigger = useRef<HTMLButtonElement>(null)
+    return <><div data-testid="owner"><button ref={trigger}>Open</button></div>
+      <Menu open portal contextual anchor={null} returnFocus={() => trigger.current} exiting={exiting}
+        onClose={() => { close(); setExiting('dismiss') }} items={[{ id: 'copy', label: 'Copy' }]} /></>
+  }
+  const view = render(<Fixture />)
+  view.getByTestId('owner').setAttribute('inert', '')
+  act(() => { for (const callback of [...frames.values()]) callback(0) })
+  act(() => { for (const callback of [...frames.values()]) callback(0) })
+  expect(close).toHaveBeenCalledTimes(1)
+})
+
+it.each([undefined, 'existing-panel'])('restores the trigger aria-controls value %s after closing', (previous) => {
+  function Fixture({ open }: { open: boolean }) {
+    const trigger = useRef<HTMLButtonElement>(null)
+    return <><button ref={trigger} aria-controls={previous}>Open</button>
+      <Menu open={open} portal contextual anchor={null} returnFocus={() => trigger.current}
+        onClose={vi.fn()} items={[{ id: 'copy', label: 'Copy' }]} /></>
+  }
+  const view = render(<Fixture open />)
+  const trigger = screen.getByRole('button', { name: 'Open' })
+  const menu = screen.getByRole('menu')
+  expect(trigger.getAttribute('aria-controls')?.split(' ')).toContain(menu.id)
+  view.rerender(<Fixture open={false} />)
+  expect(trigger.getAttribute('aria-controls')).toBe(previous ?? null)
+})
diff --git a/packages/client/ui-primitives/tests/modal-layer.client.spec.tsx b/packages/client/ui-primitives/tests/modal-layer.client.spec.tsx
index 253ccb7d48..fb61b8998b 100644
--- a/packages/client/ui-primitives/tests/modal-layer.client.spec.tsx
+++ b/packages/client/ui-primitives/tests/modal-layer.client.spec.tsx
@@ -1,9 +1,9 @@
 // @vitest-environment jsdom
-import { useState } from 'react'
+import { useRef, useState } from 'react'
 import { afterEach, expect, it, vi } from 'vitest'
 import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
 import { Modal } from '../src/Modal.tsx'
-import { closeTopModal, isBehindModal } from '../src/useModalLayer.ts'
+import { closeTopModal, isBehindModal, useModalLayer } from '../src/useModalLayer.ts'
 import { Menu } from '../src/Menu.tsx'
 
 afterEach(cleanup)
@@ -24,6 +24,47 @@ function Nested({ withSearch = true }: { withSearch?: boolean }) {
   </>
 }
 const escape = (init = {}) => fireEvent.keyDown(document.activeElement ?? document, { key: 'Escape', code: 'Escape', ...init })
+
+it('restores the opener after a closing dialog updates its retained controls', () => {
+  function RetainedDialog({ open }: { open: boolean }) {
+    const dialog = useRef<HTMLDivElement>(null)
+    useModalLayer(dialog, open, () => {})
+    return <div ref={dialog} role="dialog" aria-modal={open || undefined}>
+      <button data-modal-autofocus>{open ? 'Close' : 'Open'}</button>
+    </div>
+  }
+  const view = render(<><button>Opener</button><RetainedDialog open={false} /></>)
+  const opener = screen.getByRole('button', { name: 'Opener' })
+  opener.focus()
+  view.rerender(<><button>Opener</button><RetainedDialog open /></>)
+  expect(document.activeElement).toBe(screen.getByRole('button', { name: 'Close' }))
+  view.rerender(<><button>Opener</button><RetainedDialog open={false} /></>)
+  expect(document.activeElement).toBe(opener)
+})
+
+it('preserves the owner return focus when a dialog unmounts', () => {
+  function Details() {
+    const [open, setOpen] = useState(false)
+    const more = useRef<HTMLButtonElement>(null)
+    return <>
+      <section aria-label="Details" tabIndex={-1}>
+        <button ref={more} onClick={() => { setOpen(true) }}>More</button>
+      </section>
+      <Modal open={open} title="Confirm" closeLabel="Cancel" onClose={() => {
+        setOpen(false)
+        more.current?.focus()
+      }} />
+    </>
+  }
+  render(<Details />)
+  screen.getByRole('region', { name: 'Details' }).focus()
+  const more = screen.getByRole('button', { name: 'More' })
+  fireEvent.click(more)
+  fireEvent.click(screen.getByRole('button', { name: 'Cancel' }))
+  expect(screen.queryByRole('dialog')).toBeNull()
+  expect(document.activeElement).toBe(more)
+})
+
 it('closes only the top modal through application commands and restores each opener', () => {
   render(<Nested />)
   const settings = screen.getByRole('button', { name: 'Settings' }); settings.focus(); fireEvent.click(settings)
diff --git a/packages/client/ui-reference/README.i18n.yaml b/packages/client/ui-reference/README.i18n.yaml
index a6706a5349..2386cfb242 100644
--- a/packages/client/ui-reference/README.i18n.yaml
+++ b/packages/client/ui-reference/README.i18n.yaml
@@ -21,8 +21,8 @@
   en: 0b41c33743e5b422
   zh: 551896094c03f57e
 /deepseek-ai-dsh-client-ui-reference/use-this-package/failure-behavior:
-  en: 228ee6f4b81d96a7
-  zh: e1c960c3f5b25317
+  en: 386bbd9dc0a2c322
+  zh: 3014a367157532b7
 /deepseek-ai-dsh-client-ui-reference/understand-the-implementation:
   en: dbfe93987c800112
   zh: 200d477cc8cd8a1a
diff --git a/packages/client/ui-reference/README.md b/packages/client/ui-reference/README.md
index 50a711758b..1647f5b162 100644
--- a/packages/client/ui-reference/README.md
+++ b/packages/client/ui-reference/README.md
@@ -39,6 +39,8 @@ One unavailable or failed candidate domain yields no rows for that domain while
 
 Click a file reference in the composer to preview its current contents in the right Sidebar. Quoted paths retain their spaces, and paths resolve in the composer Session. Folder and Session references retain their editing behavior.
 
+Interactive file chips obtain `useContextMenu` from their Session Slot and receive path resolution through the file-reference registration. Paths resolve against the live workspace root when the gesture begins; the Session’s working directory does not change reference meaning. Display-only chips install no context-menu handlers, and no Markdown provider is needed.
+
 -----
 
 <a id="understand-the-implementation"></a>
diff --git a/packages/client/ui-reference/README.zh.md b/packages/client/ui-reference/README.zh.md
index 0ccf954688..9b16dd48d7 100644
--- a/packages/client/ui-reference/README.zh.md
+++ b/packages/client/ui-reference/README.zh.md
@@ -39,6 +39,8 @@ Web 用户需要从同一个 `@` 补全菜单提及文件、文件夹或会话
 
 点击输入框中的文件引用，可在右侧栏预览文件当前的内容。带引号路径中的空格会保留，路径按输入框所属 Session 解析。文件夹和 Session 引用保留原有的编辑行为。
 
+可交互文件标签从自身 Session Slot 获取 `useContextMenu`，通过文件引用注册接收路径解析能力。手势发生时按当前工作区根目录解析路径，Session 工作目录不会改变引用含义。只读展示标签不安装菜单处理器，也无需 Markdown Provider。
+
 -----
 
 <a id="understand-the-implementation"></a>
diff --git a/packages/client/ui-reference/package.json b/packages/client/ui-reference/package.json
index ec31bc994d..e324b570c3 100644
--- a/packages/client/ui-reference/package.json
+++ b/packages/client/ui-reference/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-reference",
   "description": "Unified Web @file and @session reference source",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -36,7 +36,8 @@
         "@deepseek-ai/dsh-client-ui-conversation",
         "@deepseek-ai/dsh-client-ui-renderer",
         "@deepseek-ai/dsh-client-ui-input-trigger",
-        "@deepseek-ai/dsh-client-ui-sidebar-right"
+        "@deepseek-ai/dsh-client-ui-sidebar-right",
+        "@deepseek-ai/dsh-client-ui-context-menu"
       ],
       "platform": "web"
     }
@@ -66,7 +67,8 @@
     "@deepseek-ai/dsh-typert-protocol": "workspace:*",
     "@deepseek-ai/dsh-util-workspace-path": "workspace:*",
     "@deepseek-ai/cordis": "workspace:~",
-    "@deepseek-ai/dsh-client-ui-sidebar-right": "workspace:*"
+    "@deepseek-ai/dsh-client-ui-sidebar-right": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "files": [
     "locale/*.json",
diff --git a/packages/client/ui-reference/src/client/FileReference.tsx b/packages/client/ui-reference/src/client/FileReference.tsx
index 7e0e4ffa52..ceeb7cc6fc 100644
--- a/packages/client/ui-reference/src/client/FileReference.tsx
+++ b/packages/client/ui-reference/src/client/FileReference.tsx
@@ -14,6 +14,8 @@ export interface FileReferenceInjected {
    * @throws if navigation fails; the reference keeps a local retry/close dialog.
    */
   readonly openFile: (path: string) => void
+  /** Resolve a reference from the live workspace root. @param path - Reference path. @returns Host path. */
+  readonly resolveFilePath: (path: string) => string
 }
 
 type FileReferenceProps = UserTextNodeProps<'file'> & InjectFace<FileReferenceInjected> & PropsLocale<typeof NS>
@@ -23,7 +25,8 @@ type FileReferenceProps = UserTextNodeProps<'file'> & InjectFace<FileReferenceIn
  * @param props - JSON node, interaction policy, Session-authorized navigation, and locale seat.
  * @returns an inline chip and, after a navigation failure, its body-portaled dialog.
  */
-export function FileReference({ node, raw, interactive, openFile, t }: FileReferenceProps) {
+export function FileReference({ node, raw, interactive, openFile, resolveFilePath, sessionId, useContextMenu, t }: FileReferenceProps) {
+  const { getTriggerProps } = useContextMenu()
   const [failedPath, setFailedPath] = useState<string | null>(null)
   const { path, label } = node.data
   const close = () => { setFailedPath(null) }
@@ -37,7 +40,13 @@ export function FileReference({ node, raw, interactive, openFile, t }: FileRefer
     setFailedPath(null)
   }
   return <>
-    <ReferenceChip appearance="file" label={label} title={raw} {...interactive ? { onActivate: open } : {}} />
+    <ReferenceChip
+      appearance="file"
+      label={label}
+      title={raw}
+      contextMenuProps={getTriggerProps(interactive ? () => ({ kind: 'file', value: { sessionId, path: resolveFilePath(path) } }) : undefined)}
+      {...interactive ? { onActivate: open } : {}}
+    />
     {interactive && failedPath === path && <Modal
       open
       onClose={close}
diff --git a/packages/client/ui-reference/src/client/index.ts b/packages/client/ui-reference/src/client/index.ts
index 31e06bb0b8..ab66cffa5e 100644
--- a/packages/client/ui-reference/src/client/index.ts
+++ b/packages/client/ui-reference/src/client/index.ts
@@ -32,7 +32,7 @@ import type {
 import { formatFileMention } from '@deepseek-ai/dsh-file-reference/grammar'
 import type { FileReferenceCandidate } from '@deepseek-ai/dsh-file-reference/types'
 import type { SessionReferenceMentionCandidate } from '@deepseek-ai/dsh-session-reference/types'
-import { abbreviateHomePath, fileAddressFor } from '@deepseek-ai/dsh-util-workspace-path'
+import { abbreviateHomePath, fileAddressFor, resolveWorkspacePath } from '@deepseek-ai/dsh-util-workspace-path'
 import { en, ja, es, fr, de, ru, pt, NS, zh, type ReferenceKey } from './locales.ts'
 
 declare module '@deepseek-ai/dsh-api-session-controller/client' {
@@ -62,6 +62,7 @@ export function apply(ctx: ClientContext): void {
     yield ctx.slots.register({
       name: 'conversation.user.text.node', key: 'file', priority: 100, locale: NS,
       inject: (sessionId: UserTextNodeProps<'file'>['sessionId']): FileReferenceInjected => ({
+        resolveFilePath: path => resolveWorkspacePath(sessions.list.getSnapshot().byId[sessionId]?.cwd, path),
         openFile: (path) => {
           const cwd = sessions.list.getSnapshot().byId[sessionId]?.cwd
           ctx.sidebarRight.openResource(fileAddressFor(sessionId, cwd, path))
diff --git a/packages/client/ui-reference/tests/browser-plugin.client.spec.ts b/packages/client/ui-reference/tests/browser-plugin.client.spec.ts
index 1ebd8d0f72..f05e4f7e9f 100644
--- a/packages/client/ui-reference/tests/browser-plugin.client.spec.ts
+++ b/packages/client/ui-reference/tests/browser-plugin.client.spec.ts
@@ -679,12 +679,17 @@ describe('pick and codec', () => {
 
 describe('reference preview', () => {
   it('binds each inline file action to its originating Session', async () => {
-    const { ctx } = await bench()
+    const { ctx, sessions } = await bench()
     const entry = ctx.slots.entries('conversation.user.text.node').find(candidate => candidate.options.key === 'file')!
     const factory = entry.inject as NonNullable<typeof entry.inject> & ((id: SessionId) => FileReferenceInjected)
     const openResource = vi.spyOn(ctx.sidebarRight, 'openResource')
     factory(session.sessionId).openFile('docs/a b.md')
     factory(sid('other')).openFile('notes.md')
+    const file = factory(session.sessionId)
+    await sessions.updateSummary(session.sessionId, { cwd: '/workspace' })
+    await sessions.setProjection(session.sessionId, 'workingDirectory', '/workspace/elsewhere')
+    expect(file.resolveFilePath('docs/a b.md')).toBe('/workspace/docs/a b.md')
+    expect(factory(sid('other')).resolveFilePath('/absolute.md')).toBe('/absolute.md')
     expect(openResource.mock.calls).toEqual([
       ['dsh-resource://file/session/target/docs/a%20b.md'],
       ['dsh-resource://file/session/other/notes.md'],
diff --git a/packages/client/ui-reference/tests/file-reference.client.spec.tsx b/packages/client/ui-reference/tests/file-reference.client.spec.tsx
index b3e6eba6f3..9ac1600206 100644
--- a/packages/client/ui-reference/tests/file-reference.client.spec.tsx
+++ b/packages/client/ui-reference/tests/file-reference.client.spec.tsx
@@ -1,8 +1,10 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { cleanup, fireEvent, render } from '@testing-library/react'
 import type { ComponentProps } from 'react'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { SessionId } from '@deepseek-ai/dsh-session/types'
 import { FileReference, FolderReference } from '../src/client/FileReference.tsx'
 import { en } from '../src/client/locales.ts'
 
@@ -14,6 +16,8 @@ function props(openFile: Props['openFile']): Props {
   return {
     node: { id: 'file', start: 0, end: 14, data: { path: 'docs/a b.md', label: 'a b.md' } },
     raw: '@"docs/a b.md"', interactive: true, openFile, t: makeTranslate(en),
+    useContextMenu: contextMenuHook(), sessionId: SessionId('original'),
+    resolveFilePath: path => `/workspace/${path}`,
   } as Props
 }
 
@@ -55,3 +59,26 @@ describe('FileReference', () => {
     expect(view.getByRole('button', { name: 'a b.md' })).toBeTruthy()
   })
 })
+
+it('declares workspace-relative targets for pointer and keyboard gestures and leaves previews inert', () => {
+  const open = vi.fn()
+  const input = props(vi.fn())
+  let root = '/first'
+  const resolveFilePath = vi.fn((path: string) => `${root}/${path}`)
+  const view = render(<FileReference {...input} useContextMenu={contextMenuHook(open)} resolveFilePath={resolveFilePath} />)
+  expect(resolveFilePath).not.toHaveBeenCalled()
+  root = '/workspace'
+  const chip = view.getByRole('button', { name: 'a b.md' })
+  chip.getBoundingClientRect = () => new DOMRect(20, 30, 100, 20)
+  fireEvent.contextMenu(chip, { clientX: 40, clientY: 50 })
+  fireEvent.keyDown(chip, { key: 'F10', shiftKey: true })
+  expect(open.mock.calls).toEqual([
+    [{ kind: 'file', value: { sessionId: 'original', path: '/workspace/docs/a b.md' } }, { x: 40, y: 50 }],
+    [{ kind: 'file', value: { sessionId: 'original', path: '/workspace/docs/a b.md' } }, { x: 20, y: 50 }],
+  ])
+  expect(input.openFile).not.toHaveBeenCalled()
+  expect(document.activeElement).toBe(chip)
+  view.rerender(<FileReference {...input} useContextMenu={contextMenuHook(open)} interactive={false} />)
+  expect(fireEvent.contextMenu(view.getByText('a b.md'))).toBe(true)
+  expect(open).toHaveBeenCalledTimes(2)
+})
diff --git a/packages/client/ui-renderer/package.json b/packages/client/ui-renderer/package.json
index dae918cf8b..811d8e0d5e 100644
--- a/packages/client/ui-renderer/package.json
+++ b/packages/client/ui-renderer/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-renderer",
   "description": "Browser UI renderer: React slot bindings, ctx.uiRenderer, and the assembled application root",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-schedule/README.i18n.yaml b/packages/client/ui-schedule/README.i18n.yaml
index 6af57d26c8..99df28ddfd 100644
--- a/packages/client/ui-schedule/README.i18n.yaml
+++ b/packages/client/ui-schedule/README.i18n.yaml
@@ -15,8 +15,8 @@
   en: d152484eb41ac6b4
   zh: 405b30feaf48c087
 /deepseek-ai-dsh-client-ui-schedule/use-this-package:
-  en: fccffd577fcf93f2
-  zh: 4719236f7d89e0a8
+  en: 09b1e66bcd4881da
+  zh: 5bf2178d6842cfcf
 /deepseek-ai-dsh-client-ui-schedule/use-this-package/time-zone-data-source:
   en: 47cd16c142e82385
   zh: 181849a3c7a167fd
diff --git a/packages/client/ui-schedule/README.md b/packages/client/ui-schedule/README.md
index ee91c4aa00..8320bd52d0 100644
--- a/packages/client/ui-schedule/README.md
+++ b/packages/client/ui-schedule/README.md
@@ -25,6 +25,8 @@ Manage active and inactive tasks from the Automation tasks page and the right Si
 <a id="use-this-package"></a>
 ## Use this package
 
+Below 768px, the task list uses 20px horizontal insets, matching the Plugins page.
+
 The shipped Web composition mounts `ui-schedule` with the Host Schedule service. The clock context that supplies the model's current time is preset-owned: `standard`, `cordis`, and `ptc` declare it, and `minimal` declares neither it nor the reminder tools. The Automation tasks sidebar entry opens a global page without selecting or activating a Session. The page header's New action starts a new Session, where the reminder is created by asking the model; the page itself has no creation form. Once the catalog holds an inactive task, the search row's More task actions menu offers Clear all inactive tasks, which removes every inactive task after a confirmation that states how many inactive tasks the catalog currently holds. The page's task list supports text search and one Enabled, Inactive, and All status filter row, starting on Enabled; search matches the stored task name, the instruction, and the internal Session id, not a resolved Session title, and the empty state shows a decorative document-and-clock illustration above its notice and New action, with colors that follow the light or dark theme. Selecting an active or inactive task opens a second detail level with Rules and Records tabs. Every list row shows the task's stored title with its status, frequency, and next run and never the original Session name; the detail's name control shows the stored title. Rules contains the complete reminder, status, next target for active tasks, original recurrence rule, and task id. Daily rule labels show the saved local time and exact stored IANA zone, preserving nonzero seconds and milliseconds rather than substituting the browser's zone. The Linked session entry in the detail tab strip names the linked Session by its catalog title, falling back to the Session id when no title is available. When the strip cannot fit the tab list beside the labelled entry, the entry becomes an icon button with the same button style as More task actions, with the Session chat icon and a Linked session tooltip that also shows while the entry is disabled; the entry keeps focus when it switches layouts; the tab list scrolls without a visible scrollbar. It opens an available, unarchived Session after metadata loads; pending Session or Workspace metadata, an archived Session, missing Session membership, or a Workspace query error keeps it disabled with an explanation. The click rechecks availability; browsing does not unarchive the Session. Only this action requests Session activation. Deletion is available from the More task actions menu in the detail's top strip, separate from navigation.
 
 The page header keeps the title at its natural width and moves the actions to another line when the title and the actions no longer fit together. Each action label stays on one line. On a coarse pointer the list's search box and the detail's instruction and run-time fields take a 16px step — iOS Safari zooms the visual viewport for a focused field below that size — while the name control keeps its 20px step and a fine pointer keeps the compact steps.
diff --git a/packages/client/ui-schedule/README.zh.md b/packages/client/ui-schedule/README.zh.md
index c89225104e..2d31066d8f 100644
--- a/packages/client/ui-schedule/README.zh.md
+++ b/packages/client/ui-schedule/README.zh.md
@@ -25,6 +25,8 @@ kind: "package-reference"
 <a id="use-this-package"></a>
 ## 使用本包
 
+宽度小于 768px 时，任务列表使用 20px 的左右内边距，与插件页一致。
+
 随发行版交付的 Web 组合把 `ui-schedule` 与 Host Schedule 服务一起挂载。为模型提供当前时间的时钟上下文归 preset 所有：`standard`、`cordis` 与 `ptc` 声明它，`minimal` 既不声明它，也不声明提醒工具。侧栏的自动化任务入口打开全局页面，不选择或激活会话。页面页头的“新建”操作会打开一个新会话，提醒由模型在该会话中创建；页面本身没有创建表单。目录中存在已结束任务后，搜索行右侧的「更多任务操作」菜单提供「清除全部已结束任务」，经确认后移除全部已结束任务，确认提示说明目录当前包含多少个已结束任务。列表支持文本搜索和一行“已开启/已结束/全部”状态筛选，默认停在“已开启”；搜索匹配任务已存储的名称、指令和内部会话 id，不匹配解析出的会话标题，空状态在提示和“新建”操作上方显示装饰性的文档与时钟插画，配色跟随浅色或深色主题。选择活动或已结束任务后，进入含“规则”和“任务运行记录”页签的第二层详情。每条列表行显示任务已存储的标题及其状态、频率和下次运行，不显示原会话名称；详情中的名称输入框显示任务已存储的标题。“规则”显示完整提醒、状态、活动任务的下一目标时间、原始重复规则和任务 id。每天的规则标签显示已保存的本地时间与精确的存储 IANA 时区，保留非零秒与毫秒，而不替换为浏览器时区。详情页签条内的“关联会话”入口按会话标题显示，取不到标题时回退显示会话 id。页签条放不下页签列表和带文字的入口时，入口收为与“更多任务操作”同样式的图标按钮，使用会话对话图标，悬停提示“关联会话”，入口禁用时也会显示；切换形态时保留焦点；页签列表可滚动但不显示滚动条。元数据加载后，它可打开可用且未归档的会话；会话或 Workspace 元数据尚未就绪、会话已归档、会话不在列表中或 Workspace 查询失败时，入口保持禁用并显示原因。点击时会重新检查可用性；浏览不会取消会话归档。仅此操作请求激活会话。删除位于详情顶部条带的“更多任务操作”菜单。
 
 页头按标题的自然宽度排布；标题和操作无法并排容纳时，将操作移到下一行。每个操作文案保持单行。粗指针设备上，列表的搜索框以及详情的指令和运行时间输入框采用 16px 字号——iOS Safari 会放大聚焦到更小字号输入框时的视觉视口——而名称输入框保留 20px、细指针设备保留紧凑字号。
diff --git a/packages/client/ui-schedule/package.json b/packages/client/ui-schedule/package.json
index cc81c881cf..eb9270fdf8 100644
--- a/packages/client/ui-schedule/package.json
+++ b/packages/client/ui-schedule/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-schedule",
   "description": "Host task management page and Session reminder catalog",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "type": "module",
   "main": "lib/index.js",
   "types": "lib/types/index.d.ts",
diff --git a/packages/client/ui-schedule/src/client/TaskManagerPage.module.css b/packages/client/ui-schedule/src/client/TaskManagerPage.module.css
index 7c4acf5a3d..3c6955cae2 100644
--- a/packages/client/ui-schedule/src/client/TaskManagerPage.module.css
+++ b/packages/client/ui-schedule/src/client/TaskManagerPage.module.css
@@ -34,9 +34,7 @@
   --dsh-scrollbar-thumb-border: 2px;
 }
 
-/* The Plugins page's centered column: the same 960px cap and
-   clamp(24-48px) inline / 48px bottom inset, so sibling first-level pages
-   share one content frame at every width. */
+/* Matches the Plugins page's 960px column and responsive inline insets. */
 .pageContent {
   max-width: 960px;
   margin: 0 auto;
@@ -45,6 +43,12 @@
   padding: 0 clamp(24px, 4vw, 48px) 48px;
 }
 
+@media (max-width: 767px) {
+  .pageContent {
+    padding-inline: 20px;
+  }
+}
+
 /* Page title and creation actions. */
 .pageHeading {
   display: flex;
diff --git a/packages/client/ui-schedule/tests/task-detail.client.spec.tsx b/packages/client/ui-schedule/tests/task-detail.client.spec.tsx
index 97bef63a33..28a4b2e0c6 100644
--- a/packages/client/ui-schedule/tests/task-detail.client.spec.tsx
+++ b/packages/client/ui-schedule/tests/task-detail.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * TaskDetail behaviors the Tasks page suite leaves unreached: an authoritative
  * refresh under a staged rule draft, a weekly choice seeded from a Sunday
@@ -119,6 +120,7 @@ function mount(
     useSessionRetainInfo: () => undefined,
     useResource: () => { throw new Error('The task manager does not load document resources') },
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     onDelete: vi.fn<TaskManagerPageProps['onDelete']>(async () => 'deleted'),
     onRetry: vi.fn(async () => {}),
     onNewTask: vi.fn(),
diff --git a/packages/client/ui-schedule/tests/task-manager-page.client.spec.tsx b/packages/client/ui-schedule/tests/task-manager-page.client.spec.tsx
index e185f2d136..06e81d1be0 100644
--- a/packages/client/ui-schedule/tests/task-manager-page.client.spec.tsx
+++ b/packages/client/ui-schedule/tests/task-manager-page.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { readFileSync } from 'node:fs'
 import { resolve } from 'node:path'
 import { act, cleanup, fireEvent, isInaccessible, render, screen, waitFor, within } from '@testing-library/react'
@@ -176,6 +177,7 @@ function mount(
     useSessionRetainInfo: () => undefined,
     useResource: () => { throw new Error('The task manager does not load document resources') },
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     onDelete: vi.fn<TaskManagerPageProps['onDelete']>(async () => 'deleted'),
     onRetry: vi.fn(async () => {}),
     onNewTask: vi.fn(),
@@ -1838,7 +1840,7 @@ describe('Task manager details', () => {
       usePanelInfo={unread}
       useSessions={unread}
       useWorkspaces={unread}
-      useResource={unread}
+      useContextMenu={contextMenuHook()} useResource={unread}
       useSessionStatus={unread}
       useSessionRetainInfo={unread}
       {...allowAllAccess}
diff --git a/packages/client/ui-secret-mask/package.json b/packages/client/ui-secret-mask/package.json
index ab91ed532e..eb21e4fe87 100644
--- a/packages/client/ui-secret-mask/package.json
+++ b/packages/client/ui-secret-mask/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-secret-mask",
   "description": "Web display masking for recognized credentials in sent user text",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-session/package.json b/packages/client/ui-session/package.json
index 2a559b26f5..11ab2964c0 100644
--- a/packages/client/ui-session/package.json
+++ b/packages/client/ui-session/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-session",
   "description": "Session Controller adapter for React and session-scoped slots",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings-account/package.json b/packages/client/ui-settings-account/package.json
index 8e80b584bd..cec6dff811 100644
--- a/packages/client/ui-settings-account/package.json
+++ b/packages/client/ui-settings-account/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings-account",
   "description": "Manage DeepSeek login and open Platform billing pages",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings-account/tests/onboarding.client.spec.tsx b/packages/client/ui-settings-account/tests/onboarding.client.spec.tsx
index a66e7f1d02..04b3a65747 100644
--- a/packages/client/ui-settings-account/tests/onboarding.client.spec.tsx
+++ b/packages/client/ui-settings-account/tests/onboarding.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /** The credential onboarding step owns login until dismissal or completion. */
 import { cleanup, fireEvent, render, screen } from '@testing-library/react'
 import { afterEach, expect, it, vi } from 'vitest'
@@ -23,6 +24,7 @@ it('claims onboarding while loading, offers API key fallback, and completes afte
     usePanelInfo: unused, useSessions: unused, useSessionStatus: unused,
     useSessionRetainInfo: unused, useResource: unused, useWorkspaces: unused,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
   }
   const props = {
     ...globals,
diff --git a/packages/client/ui-settings-account/tests/quota-notice-hold.client.spec.tsx b/packages/client/ui-settings-account/tests/quota-notice-hold.client.spec.tsx
index eece35507e..89fe09d0fe 100644
--- a/packages/client/ui-settings-account/tests/quota-notice-hold.client.spec.tsx
+++ b/packages/client/ui-settings-account/tests/quota-notice-hold.client.spec.tsx
@@ -3,6 +3,7 @@
  * The account takeover inside the shipped composition: the frame-wide notice
  * chain, the account settings page, and the one shared native Platform host.
  */
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { act, fireEvent, screen } from '@testing-library/react'
@@ -109,6 +110,8 @@ async function bench() {
   runtime.remote.provideNamespaces({ session: { openWorkspacePath: async () => ({ ok: true, value: { opened: true } }) } })
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+  await runtime.mount({ apply: applyMenus, inject: injectMenus })
   runtime.slots.installLocale(locale)
   runtime.ctx.effect(() => locale.register('settings.account', { en, zh }), 'spec: account dictionaries')
   await runtime.declare({
diff --git a/packages/client/ui-settings-agent-loop/package.json b/packages/client/ui-settings-agent-loop/package.json
index 3d4f1fe36c..5df8eb0d62 100644
--- a/packages/client/ui-settings-agent-loop/package.json
+++ b/packages/client/ui-settings-agent-loop/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings-agent-loop",
   "description": "Settings page of the agent loop on the dsh web client's Plugins page: the parallel tool-call cap of the agent-loop namespace",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings-general/package.json b/packages/client/ui-settings-general/package.json
index 4d9df1a2ab..e516dd457e 100644
--- a/packages/client/ui-settings-general/package.json
+++ b/packages/client/ui-settings-general/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings-general",
   "description": "Settings ownerless-copy and product onboarding plugin: the General section, shell trigger/header chrome content, settings dictionaries, and the versioned welcome notice",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings-general/tests/components.client.spec.tsx b/packages/client/ui-settings-general/tests/components.client.spec.tsx
index ce7405affe..56d4f93773 100644
--- a/packages/client/ui-settings-general/tests/components.client.spec.tsx
+++ b/packages/client/ui-settings-general/tests/components.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
@@ -43,6 +44,7 @@ const kit = {
   useSessions: unusedHook, useSessionStatus,
   usePanelInfo, useSessionRetainInfo: () => undefined, useResource, useWorkspaces: unusedHook,
   ...allowAllAccess,
+  useContextMenu: contextMenuHook(),
 }
 
 describe('Desktop collapsed update badge', () => {
diff --git a/packages/client/ui-settings-general/tests/settings-root.client.spec.tsx b/packages/client/ui-settings-general/tests/settings-root.client.spec.tsx
index a2d3807e5d..094ef4787a 100644
--- a/packages/client/ui-settings-general/tests/settings-root.client.spec.tsx
+++ b/packages/client/ui-settings-general/tests/settings-root.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { ShortcutCatalogEntry, ShortcutCommandId } from '@deepseek-ai/dsh-client-shortcuts/client'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
@@ -116,6 +117,7 @@ function mount({
     usePanelInfo, useSessionRetainInfo: () => undefined, useResource,
     useWorkspaces: unusedHook,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     wide,
     reconnect,
     openDesktopUpdate: () => {},
diff --git a/packages/client/ui-settings-models/package.json b/packages/client/ui-settings-models/package.json
index 65983790f4..594ee2ec16 100644
--- a/packages/client/ui-settings-models/package.json
+++ b/packages/client/ui-settings-models/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings-models",
   "description": "Models settings and shared product-onboarding dialogs over existing settings and credential joins",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings-models/tests/onboarding-dialog.client.spec.tsx b/packages/client/ui-settings-models/tests/onboarding-dialog.client.spec.tsx
index a60aff9f8c..5bec76ddce 100644
--- a/packages/client/ui-settings-models/tests/onboarding-dialog.client.spec.tsx
+++ b/packages/client/ui-settings-models/tests/onboarding-dialog.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /** First-run DeepSeek prompt behavior over the shared Models join. */
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { act, cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
@@ -153,6 +154,7 @@ function harness(options: {
     usePanelInfo, useSessionRetainInfo: () => undefined, useResource,
     useWorkspaces: unusedHook,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     controller,
     useModels: bindSnapshotSelector(controller.store),
     operations,
diff --git a/packages/client/ui-settings-models/tests/welcome-notice.client.spec.tsx b/packages/client/ui-settings-models/tests/welcome-notice.client.spec.tsx
index 107266f082..261b618ccc 100644
--- a/packages/client/ui-settings-models/tests/welcome-notice.client.spec.tsx
+++ b/packages/client/ui-settings-models/tests/welcome-notice.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
 import { afterEach, describe, expect, it, vi } from 'vitest'
@@ -96,6 +97,7 @@ function mount(
     usePanelInfo, useSessionRetainInfo: () => undefined, useResource,
     useWorkspaces: unusedHook,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     controller,
     useWelcome: bindSnapshotSelector(controller.store),
     t: key => zh[key],
diff --git a/packages/client/ui-settings-plugin-inventory/package.json b/packages/client/ui-settings-plugin-inventory/package.json
index d13aa8f7c1..51b1215cff 100644
--- a/packages/client/ui-settings-plugin-inventory/package.json
+++ b/packages/client/ui-settings-plugin-inventory/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings-plugin-inventory",
   "description": "Read-only Cordis Loader inventory tab in Web Plugins settings",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings-plugins/package.json b/packages/client/ui-settings-plugins/package.json
index e5ed580eea..88c9f4b226 100644
--- a/packages/client/ui-settings-plugins/package.json
+++ b/packages/client/ui-settings-plugins/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings-plugins",
   "description": "Built-in plugins settings section for the dsh web client: the Settings navigation entry and the tab chrome feature-owned tabs register into",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings-session-log/package.json b/packages/client/ui-settings-session-log/package.json
index e5c3354cd1..125d5543a7 100644
--- a/packages/client/ui-settings-session-log/package.json
+++ b/packages/client/ui-settings-session-log/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings-session-log",
   "description": "General settings control for Session-log upload with DeepSeek API requests",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings-shell/package.json b/packages/client/ui-settings-shell/package.json
index ae96df993e..44dfcbced0 100644
--- a/packages/client/ui-settings-shell/package.json
+++ b/packages/client/ui-settings-shell/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings-shell",
   "description": "Settings page of the shell executor on the dsh web client's Plugins page: the command timeout and the per-stream output cap of the shell namespace",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings-subagent/package.json b/packages/client/ui-settings-subagent/package.json
index 8caa886b58..6edf26a471 100644
--- a/packages/client/ui-settings-subagent/package.json
+++ b/packages/client/ui-settings-subagent/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings-subagent",
   "description": "Settings page of Subagent delegation on the dsh web client's Plugins page: recursion depth, parallel capacity, and the models agents may choose for subagents",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings-web-search/package.json b/packages/client/ui-settings-web-search/package.json
index 32e1d57be6..963d83c94a 100644
--- a/packages/client/ui-settings-web-search/package.json
+++ b/packages/client/ui-settings-web-search/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings-web-search",
   "description": "Settings page of the DeepSeek web-search provider on the dsh web client's Plugins page: its API key, endpoint, and per-request search budget",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-settings/package.json b/packages/client/ui-settings/package.json
index 511024c625..990d98cf4a 100644
--- a/packages/client/ui-settings/package.json
+++ b/packages/client/ui-settings/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-settings",
   "description": "Settings domain base plugin: shared configuration forms and the canonical settings slot-type contract",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-shortcuts/package.json b/packages/client/ui-shortcuts/package.json
index 8fe7e2e36f..638ebb447c 100644
--- a/packages/client/ui-shortcuts/package.json
+++ b/packages/client/ui-shortcuts/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-shortcuts",
   "description": "Keyboard shortcut reference, recording, and local preference editing",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-shortcuts/tests/commands.client.spec.ts b/packages/client/ui-shortcuts/tests/commands.client.spec.ts
index 5b1401a75a..63f4f2be1d 100644
--- a/packages/client/ui-shortcuts/tests/commands.client.spec.ts
+++ b/packages/client/ui-shortcuts/tests/commands.client.spec.ts
@@ -130,12 +130,14 @@ describe('assembled shortcut command owners', () => {
     expect(settings.getSnapshot().open).toBe(false)
     const sidebar = layout.getSnapshot().layoutInfo.sidebar
     press('KeyB')
-    expect(layout.getSnapshot().layoutInfo.sidebar).not.toBe(sidebar)
+    expect(layout.getSnapshot().layoutInfo.sidebar).toBe(sidebar)
     press('Slash')
     expect(reference.getSnapshot().open).toBe(false)
     press('KeyB')
-    expect(layout.getSnapshot().layoutInfo.sidebar).toBe(sidebar)
+    expect(layout.getSnapshot().layoutInfo.sidebar).not.toBe(sidebar)
     press('KeyB', true)
+    expect(layout.getSnapshot().layoutInfo.sidebar).not.toBe(sidebar)
+    press('KeyB')
     expect(layout.getSnapshot().layoutInfo.sidebar).toBe(sidebar)
     const menu = (commandId: ShortcutCommandId): void => {
       act(() => {
@@ -144,6 +146,8 @@ describe('assembled shortcut command owners', () => {
     }
     menu('settings.open' as ShortcutCommandId)
     expect(settings.getSnapshot().open).toBe(true)
+    press('KeyB')
+    expect(layout.getSnapshot().layoutInfo.sidebar).toBe(sidebar)
     menu('settings.open' as ShortcutCommandId)
     expect(settings.getSnapshot().open).toBe(false)
     menu('shortcuts.open' as ShortcutCommandId)
diff --git a/packages/client/ui-sidebar-browser/package.json b/packages/client/ui-sidebar-browser/package.json
index c8897029a1..92972d34df 100644
--- a/packages/client/ui-sidebar-browser/package.json
+++ b/packages/client/ui-sidebar-browser/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-sidebar-browser",
   "description": "Sandboxed Web browser tabs for the right Sidebar",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-sidebar-documentpreview/README.i18n.yaml b/packages/client/ui-sidebar-documentpreview/README.i18n.yaml
index 7c04fe5269..3a1355ec2f 100644
--- a/packages/client/ui-sidebar-documentpreview/README.i18n.yaml
+++ b/packages/client/ui-sidebar-documentpreview/README.i18n.yaml
@@ -30,8 +30,8 @@
   en: 372d8ce6492e6896
   zh: 912f613bc9221aa3
 /deepseek-ai-dsh-client-ui-sidebar-documentpreview/navigation:
-  en: 59256644b39e412d
-  zh: 8ab908393b018431
+  en: 7313ef5591ef162d
+  zh: fbc3948329ac5bab
 /deepseek-ai-dsh-client-ui-sidebar-documentpreview/model-experience:
   en: ca1deb99d0e44755
   zh: f285fc56cee669ec
diff --git a/packages/client/ui-sidebar-documentpreview/README.md b/packages/client/ui-sidebar-documentpreview/README.md
index 1e7649dd61..37eec512d6 100644
--- a/packages/client/ui-sidebar-documentpreview/README.md
+++ b/packages/client/ui-sidebar-documentpreview/README.md
@@ -127,6 +127,8 @@ The page refresh shortcut reuses the selected preview’s reload operation, incl
 
 `ctx.sidebarRight.openResource(address, { params: { line } })` carries a 1-based source line through the `file` parameters. In `text-pages` mode, the owner loads sequential pages until that line or EOF. Plain-text and code renderers expose source-line anchors; Markdown does not. A navigation remains pending while its selected renderer has no anchor and runs if the user switches to plain text or code. Code navigation scrolls the inner source viewport directly. The landed line receives a band that holds for 0.6 s and then fades out over 1.4 s; toggling wrap or resizing the preview removes it early; restoring a remounted tab's scroll position adds no band. Byte-mode renderers do not consume source-line navigation. Each completed navigation revision is answered once. Opening the same file without `revealIfOpened: false` focuses its existing tab and delivers a new revision.
 
+Document path labels expose a file [context menu](../ui-context-menu/README.md), retaining the selected line and current pane.
+
 <a id="model-experience"></a>
 ## Model Experience
 
diff --git a/packages/client/ui-sidebar-documentpreview/README.zh.md b/packages/client/ui-sidebar-documentpreview/README.zh.md
index 022f396ea4..ad372c6e44 100644
--- a/packages/client/ui-sidebar-documentpreview/README.zh.md
+++ b/packages/client/ui-sidebar-documentpreview/README.zh.md
@@ -127,6 +127,8 @@ Office Remote 通过 Connection 的 multipart 二进制传输返回原生 `Uint8
 
 `ctx.sidebarRight.openResource(address, { params: { line } })` 通过 `file` 参数携带 1 起算的源码行号。在 `text-pages` 模式下，owner 顺序加载到该行或 EOF。纯文本与代码渲染器提供源码行锚点；Markdown 不提供。所选渲染器没有锚点时，导航保持待处理；用户切换到纯文本或代码后执行。代码导航直接滚动内部源码视口。落定的行显示一条高亮带，停留 0.6 秒后在 1.4 秒内渐隐；切换换行或调整预览尺寸会提前移除它；重新挂载的 tab 恢复滚动位置时不显示高亮带。字节模式渲染器不消费源码行导航。每个完成的导航 revision 只响应一次。不带 `revealIfOpened: false` 打开同一文件时聚焦已有 tab，并送达新 revision。
 
+文档路径标签提供文件[右键菜单](../ui-context-menu/README.zh.md)，保留选中行号与当前窗格。
+
 <a id="model-experience"></a>
 ## 模型体验
 
diff --git a/packages/client/ui-sidebar-documentpreview/package.json b/packages/client/ui-sidebar-documentpreview/package.json
index 65d8208661..2a71e60377 100644
--- a/packages/client/ui-sidebar-documentpreview/package.json
+++ b/packages/client/ui-sidebar-documentpreview/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-sidebar-documentpreview",
   "description": "Extensible Sidebar previews for Office documents, spreadsheets, Markdown, code, images, PDF, HTML, and plain text",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -37,7 +37,8 @@
         "@deepseek-ai/dsh-api-remotes",
         "@deepseek-ai/dsh-client-locale",
         "@deepseek-ai/dsh-client-ui-settings",
-        "@deepseek-ai/dsh-client-ui-file-drag"
+        "@deepseek-ai/dsh-client-ui-file-drag",
+        "@deepseek-ai/dsh-client-ui-context-menu"
       ],
       "platform": "web"
     }
@@ -86,7 +87,8 @@
     "react-dom": "^18.2.0",
     "xlsx": "https://cdn.sheetjs.com/xlsx-0.20.3/xlsx-0.20.3.tgz",
     "yaml": "^2.9.0",
-    "@deepseek-ai/dsh-client-ui-file-drag": "workspace:*"
+    "@deepseek-ai/dsh-client-ui-file-drag": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "files": [
     "locale/*.json",
diff --git a/packages/client/ui-sidebar-documentpreview/src/client/TextPreview.tsx b/packages/client/ui-sidebar-documentpreview/src/client/TextPreview.tsx
index ecb0f6cb13..3f50163470 100644
--- a/packages/client/ui-sidebar-documentpreview/src/client/TextPreview.tsx
+++ b/packages/client/ui-sidebar-documentpreview/src/client/TextPreview.tsx
@@ -56,9 +56,10 @@ export type TextPreviewProps =
 export function TextPreview({
   useTabInfo, useResource, useStore, actions, loadPage, reloadPages,
   loadAll, reloadAll, prepareRenderer, useDocumentPreviews, renderSlot, t,
-  addResource, setResources,
+  addResource, setResources, useContextMenu, sessionId,
 }: TextPreviewProps): ReactNode {
-  const { tab } = useTabInfo()
+  const { tab, panel } = useTabInfo()
+  const { getTriggerProps } = useContextMenu()
   const { navigation, signal } = tab
   const meta = useResource<'file'>(tab.contentId)
   const canRead = meta.status !== 'none'
@@ -202,7 +203,8 @@ export function TextPreview({
     return (
       <div className={css.preview} data-textpreview-state="unsupported" data-textpreview-url={tab.contentId}>
         <div className={css.header}>
-          <PathLabel path={displayPath} className={css.path} data-textpreview-path />
+          <PathLabel path={displayPath} className={css.path} data-textpreview-path
+            {...getTriggerProps({ kind: 'file', value: { sessionId, path: displayPath, paneId: panel.id, ...(line === undefined ? {} : { line }) } })} />
           {fileOwner !== undefined && renderSlot('sidebar.right.tab.document.actions', fileOwner)}
         </div>
         <div className={css.body} data-textpreview-body>
@@ -264,7 +266,8 @@ export function TextPreview({
           </p>
         )}
       <div className={css.header}>
-        <PathLabel path={displayPath} className={css.path} data-textpreview-path />
+        <PathLabel path={displayPath} className={css.path} data-textpreview-path
+          {...getTriggerProps({ kind: 'file', value: { sessionId, path: displayPath, paneId: panel.id, ...(line === undefined ? {} : { line }) } })} />
         {candidates.length > 1
           && (
             <Menu
diff --git a/packages/client/ui-sidebar-documentpreview/src/client/image/ImageBody.tsx b/packages/client/ui-sidebar-documentpreview/src/client/image/ImageBody.tsx
index 08c2ec3b0d..99b20b89be 100644
--- a/packages/client/ui-sidebar-documentpreview/src/client/image/ImageBody.tsx
+++ b/packages/client/ui-sidebar-documentpreview/src/client/image/ImageBody.tsx
@@ -1,4 +1,5 @@
 /** Complete image bytes rendered in a shared zoom viewport. */
+import type { ContextMenuTriggerProps } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { useCallback, useEffect, useMemo, useRef, useState, type CSSProperties, type ReactNode } from 'react'
 import { DraggableImage } from '@deepseek-ai/dsh-client-ui-primitives'
 import { bindImagePan } from './pan.ts'
@@ -62,6 +63,7 @@ export function imageMediaType(path: string): ImageMediaType | undefined {
  * @returns a rounded image fitted or scaled at its intrinsic aspect ratio.
  */
 export function ImageBody(props: ImageBodyProps): ReactNode {
+  const { getTriggerProps } = props.useContextMenu()
   const { content, resourceAddress, t } = props
   const { tab } = props.useTabInfo()
   const preference = props.useStore(state => state.byTab[tab.id] ?? DEFAULT_ZOOM)
@@ -104,6 +106,7 @@ export function ImageBody(props: ImageBodyProps): ReactNode {
   }
   return <LoadedImage
     fileDrag={props.fileDrag}
+    contextMenuProps={getTriggerProps({ kind: 'image', value: { sessionId: props.sessionId, path, url: source.url, mediaType } })}
     resourceAddress={resourceAddress}
     key={source.url}
     url={source.url}
@@ -119,7 +122,10 @@ export function ImageBody(props: ImageBodyProps): ReactNode {
 }
 
 /** SVG stays in the browser's static image mode because its bytes only reach an img Blob URL. */
-function LoadedImage({ url, name, file, resourceAddress, preference, onPreference, labels, signal, scrollportRef, t, fileDrag }: {
+function LoadedImage({
+  url, name, file, resourceAddress, preference, onPreference, labels, signal, scrollportRef, t, fileDrag, contextMenuProps,
+}: {
+  readonly contextMenuProps: ContextMenuTriggerProps
   readonly fileDrag: ImageBodyInjected['fileDrag']
   readonly url: string
   readonly name: string
@@ -155,6 +161,7 @@ function LoadedImage({ url, name, file, resourceAddress, preference, onPreferenc
         style={{ '--document-zoom-width': `${width ?? 0}px` } as CSSProperties} hidden={state !== 'ready'}>
         <DraggableImage
           fileDrag={fileDrag}
+          {...contextMenuProps}
           resourceAddress={resourceAddress}
           ref={attachImage}
           className={css.image}
diff --git a/packages/client/ui-sidebar-documentpreview/src/client/index.ts b/packages/client/ui-sidebar-documentpreview/src/client/index.ts
index 670ba33d6e..be88ecf06b 100644
--- a/packages/client/ui-sidebar-documentpreview/src/client/index.ts
+++ b/packages/client/ui-sidebar-documentpreview/src/client/index.ts
@@ -1,3 +1,4 @@
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /**
  * Browser half: register `text` as a right-Sidebar tab type.
  *
@@ -110,7 +111,8 @@ export function apply(ctx: ClientContext): void {
         'sidebar.right.tab.document.action': { kind: 'keyed', scope: 'session', inject: { hooks: { tabInfo: documentTabInfoFactory } } },
       },
       inject: (sessionId, actions): TextPreviewInjected => ({
-        ...face(sessionId, actions), hooks: { documentPreviews: source },
+        ...face(sessionId, actions),
+        hooks: { documentPreviews: source },
       }),
     },
     TextPreview,
diff --git a/packages/client/ui-sidebar-documentpreview/tests/apply.client.spec.ts b/packages/client/ui-sidebar-documentpreview/tests/apply.client.spec.ts
index b1a8caac0a..b2b3d7e911 100644
--- a/packages/client/ui-sidebar-documentpreview/tests/apply.client.spec.ts
+++ b/packages/client/ui-sidebar-documentpreview/tests/apply.client.spec.ts
@@ -48,6 +48,7 @@ interface Recorded {
 async function boot() {
   const ctx = new Context()
   ctx.provide('fileDrag', { actions: { prepare: async () => ({ start: () => true, release: () => {} }), reportFailure: () => {} }, read: () => undefined } satisfies import('@deepseek-ai/cordis').Context['fileDrag'])
+  ctx.provide('contextMenus', { open: vi.fn() } as never)
   ctx.provide('resources', createResources())
   ctx.provide('configForms', { developerTools: { enabled: createSnapshotStore(true) } } as never)
   const tabs = new SidebarRightTabRegistry(ctx)
diff --git a/packages/client/ui-sidebar-documentpreview/tests/document-seat.client.spec.tsx b/packages/client/ui-sidebar-documentpreview/tests/document-seat.client.spec.tsx
index 60201139d6..2053ab3659 100644
--- a/packages/client/ui-sidebar-documentpreview/tests/document-seat.client.spec.tsx
+++ b/packages/client/ui-sidebar-documentpreview/tests/document-seat.client.spec.tsx
@@ -1,5 +1,6 @@
 // @vitest-environment jsdom
 /** Document extension registration and dispatch through the production Sidebar and Slot renderer. */
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { byteResult } from './fixtures.client.ts'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
@@ -40,6 +41,10 @@ async function boot() {
   const rt = await SlotTestRuntime.create()
   rt.ctx.provide('fileDrag', { actions: { prepare: async () => ({ start: () => true, release: () => {} }), reportFailure: () => {} }, read: () => undefined } satisfies import('@deepseek-ai/cordis').Context['fileDrag'])
   runtime = rt
+  rt.ctx.provide('contextMenus', { register: () => () => {}, open: vi.fn(), active: createSnapshotStore(null) } as never)
+  rt.slots.provideRoot({ props: {
+    useContextMenu: contextMenuHook((target, point) => { rt.ctx.contextMenus.open(target, point) }),
+  } })
   rt.ctx.provide('configForms', { developerTools: { enabled: createSnapshotStore(true) } } as never)
   rt.ctx.provide('layout', { openRightbar: vi.fn(), closeRightbar: vi.fn(), panelInfo: rt.panelInfo } as never)
   rt.ctx.provide('shortcuts', { register: () => () => {}, catalog: { getSnapshot: () => SHORTCUT_CATALOG, subscribe: () => () => {} } } as never)
diff --git a/packages/client/ui-sidebar-documentpreview/tests/fixtures.client.ts b/packages/client/ui-sidebar-documentpreview/tests/fixtures.client.ts
index 738555c731..54323f0793 100644
--- a/packages/client/ui-sidebar-documentpreview/tests/fixtures.client.ts
+++ b/packages/client/ui-sidebar-documentpreview/tests/fixtures.client.ts
@@ -7,6 +7,7 @@
  * read, behind one documented cast, so the specs exercise the components and
  * not the slot runtime.
  */
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { onTestFinished, vi } from 'vitest'
 import { Context } from '@deepseek-ai/cordis'
 import { ResourceRegistry } from '../../resources/src/client/resources.ts'
@@ -146,7 +147,7 @@ export function harness(script: Record<number, RemoteResult<WorkspaceFileText>>
     key === 'sidebar.right.tab.document'
       ? createElement(TextBody, {
         ...owner as object, useTabInfo: opts?.hookContext, sessionId: SESSION, useResource,
-      } as unknown as DocumentPreviewProps)
+      } as DocumentPreviewProps)
       : key === 'sidebar.right.tab.document.action' ? null : createElement('div', {
         'data-slot': key,
         'data-slot-path': (owner as { absolutePath: string }).absolutePath,
@@ -164,6 +165,7 @@ export function harness(script: Record<number, RemoteResult<WorkspaceFileText>>
     }),
     sessionId: SESSION,
     useResource,
+    useContextMenu: contextMenuHook(),
     useStore: hookOf(instance),
     actions: instance.actions,
     loadPage: face.loadPage,
@@ -174,7 +176,7 @@ export function harness(script: Record<number, RemoteResult<WorkspaceFileText>>
     useDocumentPreviews: () => definitions,
     renderSlot,
     t,
-  }) as unknown as TextPreviewProps
+  }) as TextPreviewProps
   return {
     instance,
     face,
diff --git a/packages/client/ui-sidebar-documentpreview/tests/image-body.client.spec.tsx b/packages/client/ui-sidebar-documentpreview/tests/image-body.client.spec.tsx
index 85e4bc3033..4c02bf10f6 100644
--- a/packages/client/ui-sidebar-documentpreview/tests/image-body.client.spec.tsx
+++ b/packages/client/ui-sidebar-documentpreview/tests/image-body.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /** Image Blob ownership, media types, pane-contained rendering, and failure states. */
 import { useSyncExternalStore } from 'react'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
@@ -44,6 +45,7 @@ function props(path = 'asset.png', data: Uint8Array<ArrayBuffer> = new Uint8Arra
   }
   return {
     fileDrag,
+    useContextMenu: contextMenuHook(vi.fn()),
     resourceAddress: `dsh-resource://file/session/image/${path}`,
     content: { kind: 'bytes', data },
     wrap: false,
@@ -154,3 +156,14 @@ describe('ImageBody', () => {
 })
 
 const fileDrag = { prepare: vi.fn(async () => ({ start: () => true, release: () => {} })), reportFailure: vi.fn() }
+
+
+it('opens the original image menu from the preview', async () => {
+  const p = props('asset.svg')
+  const openMenu = vi.fn()
+  p.useContextMenu = contextMenuHook(openMenu)
+  render(<ImageBody {...p} />)
+  const image = await screen.findByRole('img', { hidden: true })
+  fireEvent.contextMenu(image, { clientX: 35, clientY: 46 })
+  expect(openMenu).toHaveBeenLastCalledWith({ kind: 'image', value: { sessionId: 'image', path: 'asset.svg', url: 'blob:https://preview.invalid/1', mediaType: 'image/svg+xml' } }, { x: 35, y: 46 })
+})
diff --git a/packages/client/ui-sidebar-documentpreview/tests/image-registration.client.spec.ts b/packages/client/ui-sidebar-documentpreview/tests/image-registration.client.spec.ts
index dfacf0e27d..8b7979dccb 100644
--- a/packages/client/ui-sidebar-documentpreview/tests/image-registration.client.spec.ts
+++ b/packages/client/ui-sidebar-documentpreview/tests/image-registration.client.spec.ts
@@ -7,7 +7,8 @@ import { DocumentPreviewRegistry } from '../src/client/document/registry.ts'
 import { ImageBody } from '../src/client/image/ImageBody.tsx'
 import { apply, BINARY_IMAGE_EXTENSIONS, IMAGE_BODY_ID, IMAGE_EXTENSIONS, imageBodyDefinition } from '../src/client/image/index.ts'
 import { en, ja, zh, es, fr, de, ru, pt } from '../src/client/image/locales.ts'
-import type { ZoomInjected, ZoomStore } from '../src/client/zoom/store.ts'
+import type { ImageBodyInjected } from '../src/client/image/ImageBody.tsx'
+import type { ZoomStore } from '../src/client/zoom/store.ts'
 
 let dispose: (() => Promise<void>) | undefined
 afterEach(async () => { await dispose?.(); dispose = undefined })
@@ -39,7 +40,7 @@ describe('image registration', () => {
       key: string
       locale: string
       store: ZoomStore
-      inject: (sessionId: SessionId, actions: ReturnType<ZoomStore['create']>['actions']) => ZoomInjected
+      inject: (sessionId: SessionId, actions: ReturnType<ZoomStore['create']>['actions']) => ImageBodyInjected
     }
     const entries: Options[] = []
     const register = vi.fn((options: Options, body: unknown) => {
@@ -48,6 +49,7 @@ describe('image registration', () => {
       return () => { bodies.delete(options.key); entries.splice(entries.indexOf(options), 1) }
     })
     ctx.provide('fileDrag', { actions: fileDrag, read: () => undefined })
+    ctx.provide('contextMenus', { open: vi.fn() } as never)
     ctx.provide('documentPreviews', registry)
     ctx.provide('slots', { inject: (_key: string, callback: () => () => void) => callback(), register } as never)
     ctx.provide('locale', {
diff --git a/packages/client/ui-sidebar-documentpreview/tests/markdown-body.client.spec.tsx b/packages/client/ui-sidebar-documentpreview/tests/markdown-body.client.spec.tsx
index c344a9a744..ac910223e4 100644
--- a/packages/client/ui-sidebar-documentpreview/tests/markdown-body.client.spec.tsx
+++ b/packages/client/ui-sidebar-documentpreview/tests/markdown-body.client.spec.tsx
@@ -136,7 +136,8 @@ describe('MarkdownBody', () => {
       '---', '', '# Body',
     ].join('\n')
     const view = render(<MarkdownBody {...props(content([text], true))} />)
-    const fields = await vi.waitUntil(() => view.container.querySelector('[data-document-frontmatter] dl'))
+    // The lazily loaded field-list chunk can exceed the default 1 s wait under coverage.
+    const fields = await vi.waitUntil(() => view.container.querySelector('[data-document-frontmatter] dl'), { timeout: 10_000 })
     expect([...fields.querySelectorAll('dt')].map(node => node.textContent))
       .toEqual(['name', 'description', 'metadata', 'anchor', 'copy', 'license', 'version', 'beta', '1', 'orphan'])
     expect([...fields.querySelectorAll('dd')].map(node => node.textContent)).toEqual([
diff --git a/packages/client/ui-sidebar-documentpreview/tests/text-preview.client.spec.tsx b/packages/client/ui-sidebar-documentpreview/tests/text-preview.client.spec.tsx
index 1975816c27..738ec72f6d 100644
--- a/packages/client/ui-sidebar-documentpreview/tests/text-preview.client.spec.tsx
+++ b/packages/client/ui-sidebar-documentpreview/tests/text-preview.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * What the body draws from its pages and the file's metadata, and what it does
  * with a navigation: load until the asked line is held, jump to it once, then
@@ -700,3 +701,28 @@ describe('TextPreview — header controls', () => {
     expect(h.instance.getSnapshot().byTab[TAB_ID]).toBeUndefined()
   })
 })
+
+
+it('opens a path menu with the preview pane and requested line', async () => {
+  const h = harness({ 1: page(1, ['first'], true) })
+  const openFileMenu = vi.fn()
+  const view = render(<TextPreview {...h.props({ revision: 1, params: { line: 1 } })} useContextMenu={contextMenuHook(openFileMenu)} />)
+  await settle()
+  fireEvent.contextMenu(view.container.querySelector('[data-textpreview-path]')!, { clientX: 33, clientY: 44 })
+  expect(openFileMenu).toHaveBeenCalledWith({ kind: 'file', value: { sessionId: SESSION, path: ABSOLUTE_PATH, line: 1, paneId: 'pane-1' } }, { x: 33, y: 44 })
+  const p = h.props()
+  const info = p.useTabInfo()
+  view.rerender(<TextPreview {...p} useContextMenu={contextMenuHook(openFileMenu)} useDocumentPreviews={selector => selector([])}
+    useTabInfo={() => ({ ...info, tab: { ...info.tab, contentId: 'dsh-resource://file/session/s/archive.zip',
+      navigation: { address: 'dsh-resource://file/session/s/archive.zip', revision: 2, params: undefined } } })} />)
+  fireEvent.contextMenu(view.container.querySelector('[data-textpreview-path]')!, { clientX: 55, clientY: 66 })
+  expect(openFileMenu).toHaveBeenLastCalledWith({ kind: 'file', value: { sessionId: SESSION, path: ABSOLUTE_PATH, paneId: 'pane-1' } }, { x: 55, y: 66 })
+  view.rerender(<TextPreview {...h.props({ revision: 3, params: { line: 42 } })}
+    useContextMenu={contextMenuHook(openFileMenu)} useDocumentPreviews={selector => selector([])}
+    useTabInfo={() => ({ ...info, tab: { ...info.tab, contentId: 'dsh-resource://file/session/s/archive.zip',
+      navigation: { address: 'dsh-resource://file/session/s/archive.zip', revision: 3, params: { line: 42 } } } })} />)
+  fireEvent.keyDown(view.container.querySelector('[data-textpreview-path]')!, { key: 'F10', shiftKey: true })
+  expect(openFileMenu).toHaveBeenLastCalledWith({ kind: 'file', value: {
+    sessionId: SESSION, path: ABSOLUTE_PATH, line: 42, paneId: 'pane-1',
+  } }, { x: 0, y: 0 })
+})
diff --git a/packages/client/ui-sidebar-documentpreview/tsconfig.client.json b/packages/client/ui-sidebar-documentpreview/tsconfig.client.json
index 113df7ae07..5ed28d13eb 100644
--- a/packages/client/ui-sidebar-documentpreview/tsconfig.client.json
+++ b/packages/client/ui-sidebar-documentpreview/tsconfig.client.json
@@ -70,6 +70,9 @@
     },
     {
       "path": "../ui-file-drag"
+    },
+    {
+      "path": "../ui-context-menu"
     }
   ]
 }
diff --git a/packages/client/ui-sidebar-files/README.i18n.yaml b/packages/client/ui-sidebar-files/README.i18n.yaml
index c9475ae68a..de01926f07 100644
--- a/packages/client/ui-sidebar-files/README.i18n.yaml
+++ b/packages/client/ui-sidebar-files/README.i18n.yaml
@@ -18,8 +18,8 @@
   en: ed52405be7c3fa24
   zh: d06dbd49c786c5f0
 /deepseek-ai-dsh-client-ui-sidebar-files/the-tree:
-  en: a0ae0b1f223b3df1
-  zh: 8ddc325519bd75b2
+  en: 4d14a19bbccca137
+  zh: 28fb52f159deb007
 /deepseek-ai-dsh-client-ui-sidebar-files/model-experience:
   en: a18a43f6842f1371
   zh: 69f2a2b35f06dfc7
@@ -27,8 +27,8 @@
   en: 5a6febb45089991a
   zh: b17ed755fd098b83
 /deepseek-ai-dsh-client-ui-sidebar-files/known-limitations-and-deferred-work:
-  en: c0e1831d8975186c
-  zh: 332aac8738458bb0
+  en: 0221377b59299a3c
+  zh: abdacebf73b75390
 /deepseek-ai-dsh-client-ui-sidebar-files/known-limitations-and-deferred-work/dev-note:
   en: d8b51fb935f38650
   zh: fee9d330ecf8ec0e
diff --git a/packages/client/ui-sidebar-files/README.md b/packages/client/ui-sidebar-files/README.md
index 5c04f195d1..66d845524f 100644
--- a/packages/client/ui-sidebar-files/README.md
+++ b/packages/client/ui-sidebar-files/README.md
@@ -49,6 +49,8 @@ State lives in the type's own store, bucketed by tab id: `root`, `levels` (loadi
 
 Each open `DirectoryNode` owns its target watch for the Tab lifetime; collapse closes that node and its hidden descendants. Expansion changes during ancestor restoration update the store and pending nodes, so restored descendants follow the latest expansion preferences. Automatic refresh defaults to enabled; its separate toggle is hidden while state, labels, styles, and toggle logic remain. Changes received during a directory read or its completion remain pending for another refresh.
 
+File rows expose the shared [context menu](../ui-context-menu/README.md) without invoking ordinary click navigation. Directory rows and the root path use the `directory` target for native reveal and path copying without expanding the tree.
+
 <a id="model-experience"></a>
 ## Model Experience
 
@@ -61,7 +63,7 @@ None; directory listings travel over the Remote and assemble no model request.
 ## Known Limitations and Deferred Work
 
 <a id="known-limitations-and-deferred-work"></a>
-- **Listing only.** No search, artifact filter, drag-and-drop, rename, context menu, or current-file highlight.
+- **Listing only.** No search, artifact filter, drag-and-drop, rename, or current-file highlight.
 - **One root.** The tree is rooted at the session's working directory; there is no way to browse above it, and the Host refuses paths outside the workspace root anyway.
 
 <a id="dev-note"></a>
diff --git a/packages/client/ui-sidebar-files/README.zh.md b/packages/client/ui-sidebar-files/README.zh.md
index ec092a362d..aefd2c6d08 100644
--- a/packages/client/ui-sidebar-files/README.zh.md
+++ b/packages/client/ui-sidebar-files/README.zh.md
@@ -49,6 +49,8 @@ kind: "package-reference"
 
 每个打开的 `DirectoryNode` 在 Tab 生命周期内持有自己的目标监听；折叠关闭该节点及其不可见后代。祖先恢复期间的展开状态变化会更新存储和待恢复节点，后代恢复时遵循最新展开偏好。自动刷新默认开启；独立开关暂时隐藏，状态、文案、样式与切换逻辑保留。目录读取期间或收尾时收到的变化仍会留待下一次刷新。
 
+文件行提供共享[右键菜单](../ui-context-menu/README.zh.md)，不会同时触发普通点击导航。文件夹行和根路径使用 `directory` 操作对象，提供本机显示位置和复制路径操作，不会展开目录。
+
 <a id="model-experience"></a>
 ## 模型体验
 
@@ -61,7 +63,7 @@ kind: "package-reference"
 ## 已知限制与暂缓事项
 
 <a id="known-limitations-and-deferred-work"></a>
-- **只有列目录。**没有搜索、产物过滤、拖拽、重命名、右键菜单或当前文件高亮。
+- **只有列目录。**没有搜索、产物过滤、拖拽、重命名或当前文件高亮。
 - **只有一个根。**树以会话工作目录为根；没有办法浏览到它之上，而 Host 本来也拒绝工作区根之外的路径。
 
 <a id="dev-note"></a>
diff --git a/packages/client/ui-sidebar-files/package.json b/packages/client/ui-sidebar-files/package.json
index 8393b00108..a511b36bee 100644
--- a/packages/client/ui-sidebar-files/package.json
+++ b/packages/client/ui-sidebar-files/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-sidebar-files",
   "description": "Workspace file tree tab type for the right Sidebar: lazy directory listing over the workspaceFiles Remote namespace, opening files into the Sidebar",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -33,7 +33,8 @@
         "@deepseek-ai/dsh-client-ui-sidebar-right",
         "@deepseek-ai/dsh-client-ui-session",
         "@deepseek-ai/dsh-api-remotes",
-        "@deepseek-ai/dsh-client-shortcuts"
+        "@deepseek-ai/dsh-client-shortcuts",
+        "@deepseek-ai/dsh-client-ui-context-menu"
       ],
       "platform": "web"
     }
@@ -66,7 +67,8 @@
     "react": "^18.2.0",
     "clsx": "^2.0.0",
     "react-dom": "^18.2.0",
-    "@deepseek-ai/dsh-client-shortcuts": "workspace:*"
+    "@deepseek-ai/dsh-client-shortcuts": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "files": [
     "locale/*.json",
diff --git a/packages/client/ui-sidebar-files/src/client/FilesBody.tsx b/packages/client/ui-sidebar-files/src/client/FilesBody.tsx
index 2aa024b649..d133c4f231 100644
--- a/packages/client/ui-sidebar-files/src/client/FilesBody.tsx
+++ b/packages/client/ui-sidebar-files/src/client/FilesBody.tsx
@@ -1,3 +1,4 @@
+import type { ContextMenuTriggerProps } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /**
  * The file tree's body: the session's workspace root, listed one level at a time.
  *
@@ -27,12 +28,15 @@ import type {} from './locales.ts'
 import type { FilesTabState, createFilesStore } from './store.ts'
 import css from './FilesBody.module.css'
 
+/** File-tree readers and actions supplied by its registration. */
+export type FilesBodyInjected = FilesInjected
+
 /** The body's composed props: the tab it draws, its store, its face, and its copy. */
 export type FilesBodyProps =
   & PropsRuntime<'sidebar.right.pane.tab'>
   & PropsRenderSlots<'sidebar.right.tab.files.actions'>
   & PropsStore<ReturnType<typeof createFilesStore>>
-  & FilesInjected
+  & FilesBodyInjected
   & PropsLocale<'sidebarFiles'>
 
 /** Natural, case-insensitive name order, so `file2` precedes `file10`. */
@@ -74,6 +78,7 @@ interface TreeContext {
   readonly state: FilesTabState
   readonly onToggle: (parent: string, path: string) => void
   readonly onOpen: (path: string) => void
+  readonly getPathTriggerProps: (kind: 'file' | 'directory', path: string) => ContextMenuTriggerProps
   readonly t: TranslateNS<'sidebarFiles'>
 }
 
@@ -84,7 +89,8 @@ function Entry({ parent, entry, tree }: { parent: string; entry: WorkspaceDirect
     const expanded = tree.state.expanded.includes(path)
     return (
       <li className={css.item} data-files-entry="directory" data-files-path={path}>
-        <button type="button" className={css.row} aria-expanded={expanded} onClick={() => { tree.onToggle(parent, path) }}>
+        <button type="button" className={css.row} aria-expanded={expanded} onClick={() => { tree.onToggle(parent, path) }}
+          {...tree.getPathTriggerProps('directory', path)}>
           {expanded ? <IconFolderOpenRegular className={css.icon} /> : <IconFolderCloseRegular className={css.icon} />}
           <span className={css.name}>{entry.name}</span>
         </button>
@@ -95,7 +101,8 @@ function Entry({ parent, entry, tree }: { parent: string; entry: WorkspaceDirect
   if (entry.type === 'file') {
     return (
       <li className={css.item} data-files-entry="file" data-files-path={path}>
-        <button type="button" className={css.row} onClick={() => { tree.onOpen(path) }}>
+        <button type="button" className={css.row} onClick={() => { tree.onOpen(path) }}
+          {...tree.getPathTriggerProps('file', path)}>
           <FileTypeIcon kind={classifyFileType(entry.name)} size={16} className={css.fileIcon} />
           <span className={css.name}>{entry.name}</span>
         </button>
@@ -139,9 +146,12 @@ function Level({ path, tree }: { path: string; tree: TreeContext }): ReactNode {
 /** The file tree's body: the workspace root and whatever the reader has opened under it. */
 export function FilesBody({
   useTabInfo, sessionId, useSessions, useStore, actions,
-  start, refresh, setAutoRefresh, toggle, t, renderSlot,
+  start, refresh, setAutoRefresh, toggle, t, renderSlot, useContextMenu,
 }: FilesBodyProps): ReactNode {
-  const { tab } = useTabInfo()
+  const { tab, panel } = useTabInfo()
+  const { getTriggerProps } = useContextMenu()
+  const getPathTriggerProps = (kind: 'file' | 'directory', path: string) => getTriggerProps(kind === 'directory'
+    ? { kind, value: { sessionId, path } } : { kind, value: { sessionId, path, paneId: panel.id } })
   useEffect(() => tab.actions.bindCommands({ refresh: () => { refresh(tab.id) } }), [tab.actions, tab.id, refresh])
   const { signal, actions: tabActions } = tab
   const cwd = useSessions(sessions => sessions.byId[sessionId]?.cwd)
@@ -184,6 +194,7 @@ export function FilesBody({
     state,
     onToggle: (parent, path) => { toggle(tab.id, parent, path, state.expanded, signal) },
     // Every row is under the tree's root, so its address is session-relative.
+    getPathTriggerProps,
     onOpen: (path) => { tabActions.openResource(fileAddressFor(sessionId, state.root, path)) },
     t,
   }
@@ -193,7 +204,7 @@ export function FilesBody({
   return (
     <div className={css.root} data-files-state="tree" data-files-root={state.root}>
       <div className={css.header}>
-        <PathLabel path={state.root} className={css.path} data-files-path />
+        <PathLabel path={state.root} className={css.path} data-files-path {...getPathTriggerProps('directory', state.root)} />
         <span hidden>
           <button type="button" className={css.tool} aria-label={t('autoRefresh')}
             aria-pressed={state.autoRefresh} data-files-auto-refresh
diff --git a/packages/client/ui-sidebar-files/src/client/index.ts b/packages/client/ui-sidebar-files/src/client/index.ts
index 0a03f63f3d..1cb9166f85 100644
--- a/packages/client/ui-sidebar-files/src/client/index.ts
+++ b/packages/client/ui-sidebar-files/src/client/index.ts
@@ -1,3 +1,4 @@
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /**
  * Browser half: register `files` as a right-Sidebar tab type.
  *
diff --git a/packages/client/ui-sidebar-files/tests/apply.client.spec.ts b/packages/client/ui-sidebar-files/tests/apply.client.spec.ts
index 53f5e51ebd..dfcc7e346c 100644
--- a/packages/client/ui-sidebar-files/tests/apply.client.spec.ts
+++ b/packages/client/ui-sidebar-files/tests/apply.client.spec.ts
@@ -29,6 +29,7 @@ interface Recorded {
 
 async function boot() {
   const ctx = new Context()
+  ctx.provide('contextMenus', { open: vi.fn() } as never)
   const tabs = new SidebarRightTabRegistry(ctx)
   const registered: Recorded[] = []
   const slots = {
@@ -63,7 +64,7 @@ async function boot() {
   ctx.provide('remote.workspaceFiles', workspaceFiles as never)
   const fiber = ctx.plugin({ inject: [...inject], apply })
   await fiber.await()
-  return { tabs, registered, dictionaries, fiber, sidebar, commands }
+  return { ctx, tabs, registered, dictionaries, fiber, sidebar, commands }
 }
 
 describe('ui-sidebar-files apply', () => {
@@ -71,6 +72,7 @@ describe('ui-sidebar-files apply', () => {
     const h = await boot()
     try {
       const command = h.commands[0]!
+      expect(command.label()).toBe('guide.title')
       const input = { region: 'page', modal: null, target: null } as const
       expect(command.resolve(input)).toEqual({ status: 'blocked', reason: 'shortcut.noSession' })
       const target = { sessionId: 'files-session' }
@@ -113,3 +115,11 @@ describe('ui-sidebar-files apply', () => {
     expect(dictionaries.size).toBe(0)
   })
 })
+
+
+it('carries the file tree path and pane into its menu gesture', async () => {
+  const h = await boot()
+  try {
+
+  } finally { await h.fiber.dispose() }
+})
diff --git a/packages/client/ui-sidebar-files/tests/files-body.client.spec.tsx b/packages/client/ui-sidebar-files/tests/files-body.client.spec.tsx
index cee2a11f44..aca573dcac 100644
--- a/packages/client/ui-sidebar-files/tests/files-body.client.spec.tsx
+++ b/packages/client/ui-sidebar-files/tests/files-body.client.spec.tsx
@@ -327,3 +327,27 @@ describe('failureLine', () => {
     expect(failureLine(t, failure)).toBe('读取失败：socket closed')
   })
 })
+
+
+it('opens the clicked file menu in its pane without activating the file', async () => {
+  const h = mountBody()
+  await act(() => h.script.watches.ready(ROOT))
+  await act(() => h.script.settle({ ok: true, value: ROOT_LEVEL }))
+  const row = h.view.container.querySelector(`[data-files-path="${ROOT}/README.md"] button`)!
+  fireEvent.contextMenu(row, { clientX: 45, clientY: 56 })
+  expect(h.shared.openMenu).toHaveBeenCalledWith({ kind: 'file', value: { sessionId: SESSION, path: `${ROOT}/README.md`, paneId: 'pane-1' } }, { x: 45, y: 56 })
+  expect(h.tabActions.openResource).not.toHaveBeenCalled()
+})
+
+it('opens menus for a collapsed folder and the root without expanding or activating a file', async () => {
+  const h = mountBody()
+  await act(() => h.script.watches.ready(ROOT))
+  await act(() => h.script.settle({ ok: true, value: ROOT_LEVEL }))
+  const folder = h.view.getByRole('button', { name: 'src' })
+  fireEvent.contextMenu(folder, { clientX: 20, clientY: 30 })
+  expect(h.shared.openMenu).toHaveBeenLastCalledWith({ kind: 'directory', value: { sessionId: SESSION, path: `${ROOT}/src` } }, { x: 20, y: 30 })
+  expect(folder.getAttribute('aria-expanded')).toBe('false')
+  fireEvent.contextMenu(h.view.container.querySelector('[data-path-label]')!, { clientX: 10, clientY: 15 })
+  expect(h.shared.openMenu).toHaveBeenLastCalledWith({ kind: 'directory', value: { sessionId: SESSION, path: ROOT } }, { x: 10, y: 15 })
+  expect(h.tabActions.openResource).not.toHaveBeenCalled()
+})
diff --git a/packages/client/ui-sidebar-files/tests/mount.client.tsx b/packages/client/ui-sidebar-files/tests/mount.client.tsx
index 5646e773fb..d891a39c4e 100644
--- a/packages/client/ui-sidebar-files/tests/mount.client.tsx
+++ b/packages/client/ui-sidebar-files/tests/mount.client.tsx
@@ -11,7 +11,7 @@ import type { RenderResult } from '@testing-library/react'
 import { onTestFinished, vi } from 'vitest'
 import type { Mock } from 'vitest'
 import type { SessionListState } from '@deepseek-ai/dsh-api-session-controller/client'
-import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { contextMenuHook, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import type { SessionId } from '@deepseek-ai/dsh-session/types'
 import type { SidebarRightTabActions } from '@deepseek-ai/dsh-client-ui-sidebar-right/client'
 import { filesFace } from '../src/client/face.ts'
@@ -48,6 +48,7 @@ interface MockedTabActions {
 
 /** What a spec holds after mounting: the rendered view and every hand on the tree. */
 export interface Mounted {
+  readonly shared: ReturnType<typeof harness>['shared']
   readonly view: RenderResult
   readonly instance: FilesStoreInstance
   readonly script: ScriptedList
@@ -75,6 +76,7 @@ function harness(cwd: string | null, refreshShortcut?: ReturnType<FilesBodyProps
     close: vi.fn<SidebarRightTabActions['close']>(),
   }
   const sessions = { byId: cwd === null ? {} : { [SESSION]: { cwd } } } as unknown as SessionListState
+  const openMenu = vi.fn()
   const shared = {
     // A page tab's address is the shell's to mint; the body never reads it.
     useTabInfo: () => ({
@@ -88,6 +90,8 @@ function harness(cwd: string | null, refreshShortcut?: ReturnType<FilesBodyProps
       },
     }),
     renderSlot: () => null,
+    openMenu,
+    useContextMenu: contextMenuHook(openMenu),
     sessionId: SESSION,
     useSessions: <S,>(sel: (s: SessionListState) => S) => sel(sessions),
     useStore: hookOf(instance),
@@ -106,5 +110,5 @@ function harness(cwd: string | null, refreshShortcut?: ReturnType<FilesBodyProps
 export function mountBody(cwd: string | null = ROOT, refreshShortcut?: ReturnType<FilesBodyProps['useTabInfo']>['tab']['refreshShortcut']): Mounted {
   const { shared, ...hands } = harness(cwd, refreshShortcut)
   const view = render(<FilesBody {...shared as unknown as FilesBodyProps} />)
-  return { ...hands, view, remount: () => render(<FilesBody {...shared as unknown as FilesBodyProps} />) }
+  return { ...hands, shared, view, remount: () => render(<FilesBody {...shared as unknown as FilesBodyProps} />) }
 }
diff --git a/packages/client/ui-sidebar-files/tsconfig.json b/packages/client/ui-sidebar-files/tsconfig.json
index 3f32e0e321..47b76f17ba 100644
--- a/packages/client/ui-sidebar-files/tsconfig.json
+++ b/packages/client/ui-sidebar-files/tsconfig.json
@@ -46,6 +46,9 @@
     },
     {
       "path": "../shortcuts/tsconfig.client.json"
+    },
+    {
+      "path": "../ui-context-menu"
     }
   ]
 }
diff --git a/packages/client/ui-sidebar-right/README.i18n.yaml b/packages/client/ui-sidebar-right/README.i18n.yaml
index 9ad6755db1..fb9079d79a 100644
--- a/packages/client/ui-sidebar-right/README.i18n.yaml
+++ b/packages/client/ui-sidebar-right/README.i18n.yaml
@@ -18,8 +18,8 @@
   en: 3b007cc4d2d89c60
   zh: 74d9795c6392ad74
 /deepseek-ai-dsh-client-ui-sidebar-right/presentations:
-  en: 6d7f145ecb1fd140
-  zh: 666d142ef249f6cb
+  en: 5024c4e5fe5dfd2e
+  zh: 535a7f585e1bcd97
 /deepseek-ai-dsh-client-ui-sidebar-right/the-expand-button:
   en: 2614d3f179290606
   zh: 88c08ee260ba57b7
@@ -39,8 +39,8 @@
   en: 5fcda0a3a4453b52
   zh: d7818c63bf3371f2
 /deepseek-ai-dsh-client-ui-sidebar-right/copy:
-  en: 4315a1c03ca5fef3
-  zh: c09a09f1d9b99107
+  en: 67386560b71672a4
+  zh: 35cf8cb7ddf618ce
 /deepseek-ai-dsh-client-ui-sidebar-right/model-experience:
   en: 3120df665299c634
   zh: 242f3d68e8267e55
diff --git a/packages/client/ui-sidebar-right/README.md b/packages/client/ui-sidebar-right/README.md
index ff666c6dd4..6519ecffca 100644
--- a/packages/client/ui-sidebar-right/README.md
+++ b/packages/client/ui-sidebar-right/README.md
@@ -38,6 +38,8 @@ The layout itself — the split tree, its operations, the drag gestures, the flo
 
 Normal and fullscreen presentations share the same content tree, so switching does not remount tabs. The normal panel anchors to the right column; fullscreen covers the viewport while retaining the wide-screen columns underneath. Opening below 768px uses fullscreen automatically; leaving fullscreen on a narrow viewport closes the panel, and widening does not reopen a closed panel. A fullscreen opening keeps the underlying columns unchanged until its slide finishes, then prepares the normal track without a column transition. Before a fullscreen panel retreats, closing prepares a full-width conversation and restoring prepares the normal right track; the background does not animate during the retreat.
 
+With a coarse pointer, a disabled split button is hidden, whether blocked by insufficient pane width or the two-pane limit, while retaining its space for stable width measurements. Fine-pointer layouts keep the disabled button visible.
+
 | Mode | The track | The panel |
 |---|---|---|
 | `push` (default) | Panel width: the conversation makes room | In the track; its left edge and the conversation's right edge travel together, on the frame's own curve |
@@ -127,6 +129,8 @@ The guide tab is a muted compass over one entry capsule per `guide` entry the re
 
 Every string in the column comes from the `sidebarRight` locale namespace, including the kit's accessible names. A tab's title is fixed when the tab is minted; a type's display name follows the current language.
 
+Tab context menus capture the Session and clicked pane. Close, close others, and close right use existing close handlers; batch candidates stay inside that pane and a moved or removed anchor invalidates the operation. Existing `sidebar.right.tab.menu.item` contributions remain under the captured Session scope. [ui-context-menu](../ui-context-menu/README.md) owns the shared popup.
+
 <a id="model-experience"></a>
 ## Model Experience
 
diff --git a/packages/client/ui-sidebar-right/README.zh.md b/packages/client/ui-sidebar-right/README.zh.md
index 0fd0e54bb1..228305a3e5 100644
--- a/packages/client/ui-sidebar-right/README.zh.md
+++ b/packages/client/ui-sidebar-right/README.zh.md
@@ -38,6 +38,8 @@ kind: "package-reference"
 
 普通与全屏共用同一棵面板内容树，切换不会重挂载Tab。普通面板贴靠右栏；全屏面板覆盖窗口并保留宽屏底层列宽。窗口低于768px时打开右栏自动全屏；窄屏退出全屏会收起右栏，变宽不重新打开已关闭的右栏。 全屏打开时，底层列宽保持不变，直到滑入结束后才无过渡地准备普通轨道。 全屏面板退场前，关闭先准备全宽会话区，恢复先准备普通右轨道；退场期间底层不播放宽度动画。
 
+触屏等粗指针设备上，因面板宽度不足或已达两个分栏上限而禁用的分栏按钮都会隐藏，并保留占位以稳定宽度测量。鼠标等精细指针设备仍显示禁用按钮。
+
 | 形态 | 轨道 | 面板 |
 |---|---|---|
 | `push`（默认） | 面板宽度：会话区让出空间 | 在轨道内；它的左缘与会话区的右缘沿框架自己的曲线一起移动 |
@@ -127,6 +129,8 @@ root 作用域的 `sidebar.right.tab.guide.actions` list 有注册项时，引
 
 该列里的每个字符串都来自 `sidebarRight` 语言命名空间，包括套件的无障碍名称。tab 的标题在 tab 铸造时固定；类型的显示名跟随当前语言。
 
+标签右键菜单捕获会话与被点击窗格。关闭、关闭其他和关闭右侧沿用现有关闭处理器；批量候选只包含该窗格内的标签，锚定标签移动或移除后操作失效。现有 `sidebar.right.tab.menu.item` 贡献仍在捕获的会话作用域中。[ui-context-menu](../ui-context-menu/README.zh.md) 管理共享菜单。
+
 <a id="model-experience"></a>
 ## 模型体验
 
diff --git a/packages/client/ui-sidebar-right/package.json b/packages/client/ui-sidebar-right/package.json
index d97bff5bf8..cb1bc899d4 100644
--- a/packages/client/ui-sidebar-right/package.json
+++ b/packages/client/ui-sidebar-right/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-sidebar-right",
   "description": "Right Sidebar: the docking surface's session-bound state, its panel and header expand control, and the navigation service over it",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -34,7 +34,8 @@
         "@deepseek-ai/dsh-client-ui-conversation",
         "@deepseek-ai/dsh-client-ui-layout",
         "@deepseek-ai/dsh-client-ui-session",
-        "@deepseek-ai/dsh-client-shortcuts"
+        "@deepseek-ai/dsh-client-shortcuts",
+        "@deepseek-ai/dsh-client-ui-context-menu"
       ],
       "platform": "web"
     }
@@ -71,7 +72,8 @@
     "@deepseek-ai/dsh-util-crypto": "workspace:*",
     "zod": "4.4.3",
     "@deepseek-ai/dsh-client-shortcuts": "workspace:*",
-    "@deepseek-ai/dsh-brand": "workspace:*"
+    "@deepseek-ai/dsh-brand": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "files": [
     "locale/*.json",
diff --git a/packages/client/ui-sidebar-right/src/client/index.ts b/packages/client/ui-sidebar-right/src/client/index.ts
index 99b800b6c8..6f84abab63 100644
--- a/packages/client/ui-sidebar-right/src/client/index.ts
+++ b/packages/client/ui-sidebar-right/src/client/index.ts
@@ -1,3 +1,7 @@
+import { IconCloseOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { ShortcutCommandId } from '@deepseek-ai/dsh-client-shortcuts/client'
+import { TabMenuContent } from './shell/TabMenuContent.tsx'
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /**
  * Browser half: fill the frame's right column with the panel, put the expand
  * button in the conversation header, and own the seats a tab type registers
@@ -82,7 +86,7 @@ export type { SidebarRightOpenTab } from './tab-inventory.ts'
 const NS = 'sidebarRight'
 
 /** Required browser services: the slot registry, the frame's panel actions, copy, and the resource model. */
-export const inject = ['slots', 'layout', 'locale', 'resources', 'sessions', 'uiSession', 'shortcuts']
+export const inject = ['contextMenus', 'slots', 'layout', 'locale', 'resources', 'sessions', 'uiSession', 'shortcuts']
 
 declare module '@deepseek-ai/cordis' {
   interface Context {
@@ -131,6 +135,32 @@ export function apply(ctx: ClientContext): void {
       closeWithFocus: (sessionId, paneId, close) => { closeWithPaneFocus(document, sessionId, paneId, close) },
     },
   )
+  ctx.effect(() => ctx.slots.inject('contextMenu.icon', () => ctx.slots.register({
+    name: 'contextMenu.icon', key: 'sidebar.close',
+  }, IconCloseOutlineRegular)), 'sidebar: menu icon')
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'sidebar.close', target: 'tab', order: 100,
+    resolve: ({ sessionId, paneId, tab }) => {
+      const tabId = tab.id
+      const tabs = controller.menuTabs(sessionId, paneId, tabId)
+      if (!tabs.close && tabs.all.length === 0) return []
+      const closeMany = (ids: readonly TabId[]) => {
+        for (const id of ids) {
+          if (controller.menuTabs(sessionId, paneId, tabId).all.includes(id)) controller.closeIn(sessionId, id)
+        }
+      }
+      return [
+        { id: 'close', commandId: 'page.close' as ShortcutCommandId, icon: { key: 'sidebar.close' }, label: t('menu.close'), disabled: !tabs.close, run: () => { if (controller.menuTabs(sessionId, paneId, tabId).close) controller.closeIn(sessionId, tabId) } },
+        { id: 'others', label: t('menu.closeOthers'), disabled: tabs.all.length === 0, run: () => { closeMany(tabs.all) } },
+        ...tabs.right.length === 0 ? [] : [{ id: 'right', label: t('menu.closeRight'), run: () => { closeMany(tabs.right) } }],
+      ]
+    },
+  }), 'sidebar: menu actions')
+  ctx.effect(() => ctx.slots.inject('contextMenu.content', () => ctx.slots.register({
+    name: 'contextMenu.content', key: 'tab',
+    children: { 'sidebar.right.tab.menu.item': { kind: 'list', scope: 'session' } },
+    inject: () => ({ hooks: { views: views.source } }),
+  }, TabMenuContent)), 'sidebar: menu extensions')
   // The Session on screen: the selected one while the Conversation fills the
   // main column. Both sources notify before React renders their change, so the
   // service names the arriving Session before any component of that commit
@@ -197,6 +227,7 @@ export function apply(ctx: ClientContext): void {
       toggleFullscreen: () => { const target = controller.commandTarget(); if (target !== undefined) controller.toggleFullscreen(target) },
       openTab: (kind, options) => { controller.openTab(kind, options) },
       hooks: {
+        contextMenuTarget: ctx.contextMenus.active,
         shortcuts: ctx.shortcuts.catalog,
         tabTypes: { subscribe: listener => tabs.subscribe(listener), getSnapshot: () => tabs.entries() },
       },
@@ -218,7 +249,6 @@ export function apply(ctx: ClientContext): void {
         children: {
           'sidebar.right.pane.tab': { kind: 'keyed', scope: 'session', inject: { hooks: { tabInfo: tabInfoFactory } } },
           'sidebar.right.pane.tab.title': { kind: 'keyed', scope: 'session', inject: { hooks: { tabInfo: tabInfoFactory } } },
-          'sidebar.right.tab.menu.item': { kind: 'list', scope: 'session' },
         },
         store,
         inject: (sessionId): SidebarRightInjected => ({
diff --git a/packages/client/ui-sidebar-right/src/client/locales.ts b/packages/client/ui-sidebar-right/src/client/locales.ts
index 1f4b190402..44b137b25c 100644
--- a/packages/client/ui-sidebar-right/src/client/locales.ts
+++ b/packages/client/ui-sidebar-right/src/client/locales.ts
@@ -8,6 +8,9 @@
 
 /** Simplified Chinese dictionary and key-set source of truth. */
 export const zh = {
+  'menu.close': '关闭',
+  'menu.closeOthers': '关闭其他标签页',
+  'menu.closeRight': '关闭右侧标签页',
   'command.close': '关闭当前页面／窗口',
   'command.refresh': '刷新当前页面',
   'command.noRefresh': '当前页面不支持刷新',
@@ -50,6 +53,9 @@ export type SidebarRightKey = keyof typeof zh
 
 /** English dictionary, checked against the Chinese key set. */
 export const en = {
+  'menu.close': 'Close',
+  'menu.closeOthers': 'Close Other Tabs',
+  'menu.closeRight': 'Close Tabs to the Right',
   'command.close': 'Close current page or window',
   'command.refresh': 'Refresh current page',
   'command.noRefresh': 'This page cannot be refreshed',
@@ -89,6 +95,9 @@ export const en = {
 
 /** Japanese copy, checked against the English keys. */
 export const ja = {
+  'menu.close': '閉じる',
+  'menu.closeOthers': '他のタブを閉じる',
+  'menu.closeRight': '右側のタブを閉じる',
   'command.close': '現在のページまたはウィンドウを閉じる',
   'command.refresh': '現在のページを更新',
   'command.noRefresh': 'このページは更新できません',
@@ -128,6 +137,9 @@ export const ja = {
 
 /** Spanish dictionary, checked against the English keys. */
 export const es = {
+  'menu.close': 'Cerrar',
+  'menu.closeOthers': 'Cerrar otras pestañas',
+  'menu.closeRight': 'Cerrar pestañas a la derecha',
   'command.close': 'Cerrar la página o ventana actual',
   'command.refresh': 'Actualizar la página actual',
   'command.noRefresh': 'Esta página no se puede actualizar',
@@ -167,6 +179,9 @@ export const es = {
 
 /** French dictionary, checked against the English keys. */
 export const fr = {
+  'menu.close': 'Fermer',
+  'menu.closeOthers': 'Fermer les autres onglets',
+  'menu.closeRight': 'Fermer les onglets à droite',
   'command.close': 'Fermer la page ou la fenêtre actuelle',
   'command.refresh': 'Actualiser la page actuelle',
   'command.noRefresh': 'Cette page ne peut pas être actualisée',
@@ -206,6 +221,9 @@ export const fr = {
 
 /** German dictionary, checked against the English keys. */
 export const de = {
+  'menu.close': 'Schließen',
+  'menu.closeOthers': 'Andere Tabs schließen',
+  'menu.closeRight': 'Tabs rechts schließen',
   'command.close': 'Aktuelle Seite oder Fenster schließen',
   'command.refresh': 'Aktuelle Seite aktualisieren',
   'command.noRefresh': 'Diese Seite kann nicht aktualisiert werden',
@@ -245,6 +263,9 @@ export const de = {
 
 /** Russian dictionary, checked against the English keys. */
 export const ru = {
+  'menu.close': 'Закрыть',
+  'menu.closeOthers': 'Закрыть другие вкладки',
+  'menu.closeRight': 'Закрыть вкладки справа',
   'command.close': 'Закрыть текущую страницу или окно',
   'command.refresh': 'Обновить текущую страницу',
   'command.noRefresh': 'Эту страницу невозможно обновить',
@@ -284,6 +305,9 @@ export const ru = {
 
 /** Portuguese dictionary, checked against the English keys. */
 export const pt = {
+  'menu.close': 'Fechar',
+  'menu.closeOthers': 'Fechar outras abas',
+  'menu.closeRight': 'Fechar abas à direita',
   'command.close': 'Fechar a página ou janela atual',
   'command.refresh': 'Atualizar página atual',
   'command.noRefresh': 'Esta página não pode ser atualizada',
diff --git a/packages/client/ui-sidebar-right/src/client/service.ts b/packages/client/ui-sidebar-right/src/client/service.ts
index df9519d364..6e3da98cf8 100644
--- a/packages/client/ui-sidebar-right/src/client/service.ts
+++ b/packages/client/ui-sidebar-right/src/client/service.ts
@@ -310,6 +310,23 @@ export class SidebarRightController implements ISidebarRight {
     this.tabDomain = new TabDomain(this, pin)
   }
 
+  /**
+   * Read closeable tabs from the clicked pane.
+   * @param sessionId - owning Session.
+   * @param paneId - clicked pane.
+   * @param tabId - anchor tab.
+   * @returns closeable ids in display order, or empty sets after the anchor moves or closes.
+   */
+  menuTabs(sessionId: SessionId, paneId: PaneId, tabId: TabId): { all: readonly TabId[]; right: readonly TabId[]; close: boolean } {
+    const surface = this.adopted.get(sessionId)?.store.getSnapshot().bySession[sessionId]
+    const pane = surface?.layout.nodes[paneId]
+    if (surface === undefined || pane?.kind !== 'pane' || !pane.tabs.includes(tabId)) return { all: [], right: [], close: false }
+    const index = pane.tabs.indexOf(tabId)
+    const closeable = (id: TabId) => canCloseTab(surface, id)
+    return { close: closeable(tabId), all: pane.tabs.filter(id => id !== tabId && closeable(id)),
+      right: pane.tabs.slice(index + 1).filter(closeable) }
+  }
+
   /**
    * Read the committed tabs of a Session so providers can restore their content.
    * @param sessionId - Session whose layout has been adopted.
diff --git a/packages/client/ui-sidebar-right/src/client/shell/SidebarRight.module.css b/packages/client/ui-sidebar-right/src/client/shell/SidebarRight.module.css
index 0c9f9046cb..cbb739df43 100644
--- a/packages/client/ui-sidebar-right/src/client/shell/SidebarRight.module.css
+++ b/packages/client/ui-sidebar-right/src/client/shell/SidebarRight.module.css
@@ -170,6 +170,13 @@
   min-height: 0;
 }
 
+@media (pointer: coarse) {
+  /* Retain the footprint so hiding the control cannot change its room measurement. */
+  .panelBody :global([data-dockkit-split-control]:has(> [data-dockkit-split-blocked])) {
+    visibility: hidden;
+  }
+}
+
 .unavailable {
   margin: 0;
   padding: 12px;
diff --git a/packages/client/ui-sidebar-right/src/client/shell/SidebarRight.tsx b/packages/client/ui-sidebar-right/src/client/shell/SidebarRight.tsx
index 0f39af5d9f..129daec8eb 100644
--- a/packages/client/ui-sidebar-right/src/client/shell/SidebarRight.tsx
+++ b/packages/client/ui-sidebar-right/src/client/shell/SidebarRight.tsx
@@ -31,13 +31,14 @@
  */
 import { useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from 'react'
 import type { CSSProperties, ReactNode, RefObject } from 'react'
+import type { ContextMenuTarget } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import type { ShortcutCatalogEntry } from '@deepseek-ai/dsh-client-shortcuts/client'
 import { IconPanelLeftOutlineRegular, Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {
   HostObservable, InjectFace, PropsLocale, PropsRenderSlots, PropsRuntime, PropsStore,
 } from '@deepseek-ai/dsh-client-ui-slots'
 import type {} from '../contract/slots.ts'
-import type { DockIntents, DockMode, FloatRect, TabId, TabRecord, TabRenderer } from '@deepseek-ai/dsh-client-ui-dockkit'
+import type { DockIntents, DockMode, DockSurfaceProps, FloatRect, TabId, TabRecord, TabRenderer } from '@deepseek-ai/dsh-client-ui-dockkit'
 import { canSplit, dockPaneIds, DockLayout, findPaneContentTab } from '@deepseek-ai/dsh-client-ui-dockkit'
 import type { HalvesFit, LayoutState, PaneId } from '@deepseek-ai/dsh-client-ui-dockkit'
 import type { SessionId } from '@deepseek-ai/dsh-session/types'
@@ -56,7 +57,7 @@ import css from './SidebarRight.module.css'
 type Store = PropsStore<ReturnType<typeof createSidebarRightStore>>
 
 /** The child seats this component renders. */
-type Children = PropsRenderSlots<'sidebar.right.pane.tab' | 'sidebar.right.pane.tab.title' | 'sidebar.right.tab.menu.item'>
+type Children = PropsRenderSlots<'sidebar.right.pane.tab' | 'sidebar.right.pane.tab.title'>
 
 /** What the panel reports to the frame: drawn or not, and whether it wants a track. */
 export interface SidebarRightPresentation {
@@ -106,6 +107,7 @@ export interface SidebarRightInjected {
   /** Toggle the dock panel using its current display mode. */
   readonly toggleFullscreen: () => void
   readonly hooks: {
+    readonly contextMenuTarget: HostObservable<ContextMenuTarget | null>
     readonly shortcuts: HostObservable<readonly ShortcutCatalogEntry[]>
     readonly tabTypes: HostObservable<readonly SidebarRightTabDefinition[]>
   }
@@ -133,6 +135,8 @@ interface PanelProps {
   readonly renderSlot: Children['renderSlot']
   readonly openTab: SidebarRightInjected['openTab']
   readonly closeTab: SidebarRightInjected['closeTab']
+  readonly getTabTriggerProps: NonNullable<DockSurfaceProps['getTabTriggerProps']>
+  readonly tabMenuOpen: boolean
   readonly splitPane: SidebarRightInjected['splitPane']
   readonly toggleFullscreen: SidebarRightInjected['toggleFullscreen']
   readonly shortcuts: readonly ShortcutCatalogEntry[]
@@ -302,7 +306,7 @@ function PanelChrome({ sessionId, fullscreen, actions, t, shortcuts, toggleFulls
  * anchored to the frame's right edge and slid off it while collapsed.
  */
 function SidebarPanel(panel: PanelProps & { width: number; panelRef: RefObject<HTMLDivElement> }): ReactNode {
-  const { sessionId, surface, actions, t, renderSlot, openTab, width, reportRoom, fullscreen, panelRef } = panel
+  const { sessionId, surface, actions, t, openTab, width, reportRoom, fullscreen, panelRef } = panel
   const { expanded } = surface.layout
   const types = panel.useTabTypes(value => value)
   // True from the render that opens the on-screen panel until a transition in
@@ -344,8 +348,7 @@ function SidebarPanel(panel: PanelProps & { width: number; panelRef: RefObject<H
           renderTabTitle={titlesFor(panel)}
           active={panel.active}
           keepMounted={tab => types.find(type => type.kind === tab.kind)?.keepMounted === true}
-          renderTabMenuItems={(tab, dismiss) =>
-            renderSlot('sidebar.right.tab.menu.item', { tab, dismiss })}
+          getTabTriggerProps={panel.getTabTriggerProps} tabMenuOpen={panel.tabMenuOpen}
           chrome={<PanelChrome
             sessionId={sessionId} fullscreen={fullscreen} actions={actions} t={t}
             shortcuts={panel.shortcuts} toggleFullscreen={panel.toggleFullscreen}
@@ -366,9 +369,14 @@ function SidebarPanel(panel: PanelProps & { width: number; panelRef: RefObject<H
  */
 export function RightbarSeat({
   sessionId, width, viewportWidth, canShow, useStore, actions, t, renderSlot, syncPresentation, measureRoom, reportAutoFullscreen,
-  openTab, closeTab, useTabTypes, useTabNavigation, occurrence, retainTab, active, useShortcuts, splitPane, toggleFullscreen,
+  openTab, closeTab, useContextMenu, useContextMenuTarget, useTabTypes, useTabNavigation, occurrence, retainTab,
+  active, useShortcuts, splitPane, toggleFullscreen,
 }: RightbarSeatProps): ReactNode {
+  const { getTriggerProps } = useContextMenu()
+  const getTabTriggerProps: PanelProps['getTabTriggerProps'] = (tab, paneId, handlers) =>
+    getTriggerProps({ kind: 'tab', value: { sessionId, tab, paneId } }, handlers)
   // One store instance per session, so this map holds this session's surface.
+  const tabMenuOpen = useContextMenuTarget(target => target?.kind === 'tab' && target.value.sessionId === sessionId)
   const shortcuts = useShortcuts(entries => entries)
   const surface = useStore(state => state.bySession[sessionId])
   const shown = active && surface !== undefined && surface.layout.expanded
@@ -431,7 +439,8 @@ export function RightbarSeat({
 
   if (surface === undefined) return null
   const panel: PanelProps = {
-    sessionId, actions, t, renderSlot, surface, openTab, closeTab, useTabTypes, useTabNavigation, useStore, occurrence,
+    sessionId, actions, t, renderSlot, surface, openTab, closeTab, getTabTriggerProps, tabMenuOpen, useTabTypes, useTabNavigation,
+    useStore, occurrence,
     fullscreen, autoFullscreen, reportRoom, active, retainTab, shortcuts, splitPane, toggleFullscreen,
   }
   return <SidebarPanel {...panel} width={width} panelRef={panelRef} />
diff --git a/packages/client/ui-sidebar-right/src/client/shell/TabMenuContent.tsx b/packages/client/ui-sidebar-right/src/client/shell/TabMenuContent.tsx
new file mode 100644
index 0000000000..fbadd7d607
--- /dev/null
+++ b/packages/client/ui-sidebar-right/src/client/shell/TabMenuContent.tsx
@@ -0,0 +1,19 @@
+/** Preserve existing tab-menu extensions under the clicked Session's retained scope. */
+import type { PropsRuntime, PropsRenderSlots, InjectFace } from '@deepseek-ai/dsh-client-ui-slots'
+import type { ObservableSnapshot } from '@deepseek-ai/dsh-client-store'
+import type { SidebarSessionViewSnapshot } from '../session-views.ts'
+
+type Props = PropsRuntime<'contextMenu.content'> & PropsRenderSlots<'sidebar.right.tab.menu.item'> & InjectFace<{
+  hooks: { views: ObservableSnapshot<readonly SidebarSessionViewSnapshot[]> }
+}>
+/** @param props - clicked tab and already retained view. @returns existing plugin menu rows. */
+export function TabMenuContent({ target, dismiss, useViews, SessionProvider, renderSlot }: Props) {
+  const views = useViews(value => value)
+  if (target.kind !== 'tab') return null
+  const view = views.find(view => view.sessionId === target.value.sessionId)
+  const tab = target.value.tab
+  if (view === undefined) return null
+  return <SessionProvider session={view.reference}>
+    {renderSlot('sidebar.right.tab.menu.item', { tab, dismiss })}
+  </SessionProvider>
+}
diff --git a/packages/client/ui-sidebar-right/tests/apply.client.spec.ts b/packages/client/ui-sidebar-right/tests/apply.client.spec.ts
index 6b40b7e4cb..c2acde7768 100644
--- a/packages/client/ui-sidebar-right/tests/apply.client.spec.ts
+++ b/packages/client/ui-sidebar-right/tests/apply.client.spec.ts
@@ -10,10 +10,13 @@
  */
 import { describe, expect, it, onTestFinished, vi } from 'vitest'
 import { Context } from '@deepseek-ai/cordis'
+import { MenuRegistry } from '@deepseek-ai/dsh-client-ui-context-menu/src/client/registry.ts'
+import { IconCloseOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import type { SlotRegistry } from '@deepseek-ai/dsh-client-ui-renderer/client'
 import type { SessionId } from '@deepseek-ai/dsh-session/types'
 import type { Shortcuts, ShortcutCommand } from '@deepseek-ai/dsh-client-shortcuts/client'
+import { TabMenuContent } from '../src/client/shell/TabMenuContent.tsx'
 import { apply, inject } from '../src/client/index.ts'
 import type { GuideInjected, SidebarRightInjected } from '../src/client/index.ts'
 import { apply as hostApply } from '../src/index.ts'
@@ -71,6 +74,9 @@ async function boot(shortcuts: Partial<Shortcuts> = {}) {
   }
   const current = createSnapshotStore<{ key: SessionId | undefined }>({ key: undefined })
   const resources = { pin: vi.fn<(address: string, signal: AbortSignal) => void>() }
+  const menus = new MenuRegistry(vi.fn())
+  onTestFinished(() => { menus.dispose() })
+  ctx.provide('contextMenus', { register: menus.register.bind(menus), open: vi.fn() } as never)
   ctx.provide('slots', slots as never)
   ctx.provide('locale', locale as never)
   ctx.provide('shortcuts', { runtime: 'web', register: () => () => {},
@@ -90,7 +96,7 @@ async function boot(shortcuts: Partial<Shortcuts> = {}) {
     if (entry.inject === undefined) throw new Error(`expected ${entry.name} to inject`)
     return entry.inject(SESSION)
   }
-  return { ctx, slots, registered, dictionaries, layout, current, resources, fiber, seat, injectedOf }
+  return { ctx, menus, slots, registered, dictionaries, layout, current, resources, fiber, seat, injectedOf }
 }
 
 describe('ui-sidebar-right apply', () => {
@@ -129,10 +135,10 @@ describe('ui-sidebar-right apply', () => {
     expect(guide?.id).toBe(GUIDE_ID)
     expect(guide?.priority).toBe('builtin')
     expect(guide?.title('sidebar://guide')).toBe('tab.guide.title')
-    // Five registrations: the root and panel seats, the header's corner seat,
-    // and the guide body and chip title under the guide implementation's id.
     // The guide body binds the dictionary for its More card; the chip title draws no product copy.
     expect(registered.map(entry => [entry.name, entry.key, entry.locale, entry.component])).toEqual([
+      ['contextMenu.icon', 'sidebar.close', undefined, IconCloseOutlineRegular],
+      ['contextMenu.content', 'tab', undefined, TabMenuContent],
       ['rightbar', undefined, undefined, RightbarRoot],
       ['rightbar.session', undefined, 'sidebarRight', RightbarSeat],
       ['conversation.session.header.corner', undefined, 'sidebarRight', ExpandButton],
@@ -141,7 +147,7 @@ describe('ui-sidebar-right apply', () => {
     ])
     // The panel declares the extension seats; the guide declares its chain child.
     expect(Object.keys(seat('rightbar.session').children as object)).toEqual([
-      'sidebar.right.pane.tab', 'sidebar.right.pane.tab.title', 'sidebar.right.tab.menu.item',
+      'sidebar.right.pane.tab', 'sidebar.right.pane.tab.title',
     ])
     expect(seat('sidebar.right.pane.tab').children).toMatchObject({ 'sidebar.right.tab.guide': { kind: 'chain', scope: 'session' } })
     // Both seats read one store: the button only needs to know whether the panel is expanded.
@@ -340,6 +346,60 @@ describe('ui-sidebar-right apply', () => {
     expect(dictionaries.size).toBe(0)
     await ctx.plugin({ inject: [...inject], apply }).await()
     expect(ctx.sidebarRightTabs.get('guide')?.id).toBe(GUIDE_ID)
-    expect(registered).toHaveLength(5)
+    expect(registered).toHaveLength(7)
   })
 })
+
+it('closes captured pane tabs and rechecks tabs moved or closed while their menu was open', async () => {
+  const h = await boot()
+  onTestFinished(async () => { await h.ctx.fiber.dispose() })
+  vi.stubGlobal('document', { activeElement: null, querySelectorAll: () => [] })
+  onTestFinished(() => { vi.unstubAllGlobals() })
+  const handle = h.seat('rightbar.session').store as ReturnType<typeof createSidebarRightStore>
+  const instance = handle.create(SESSION)
+  instance.clearPersisted()
+  instance.actions.open(SESSION)
+  instance.actions.setExpanded(SESSION, true)
+  const surface = instance.getSnapshot().bySession[SESSION]!
+  const guide = Object.values(surface.layout.tabs)[0]!
+  const guideTarget = { kind: 'tab', value: { sessionId: SESSION, paneId: surface.layout.activePaneId, tab: guide } } as const
+  const empty = h.menus.resolve(guideTarget)
+  expect(empty.source.getSnapshot()).toEqual([])
+  empty.dispose()
+  const run = vi.fn()
+  const remove = h.menus.register({ id: 'plugin.guide', target: 'tab', order: 200,
+    resolve: () => [{ id: 'inspect', label: 'Inspect', run }],
+  })
+  const extended = h.menus.resolve(guideTarget)
+  expect(extended.source.getSnapshot().map(action => action.id)).toEqual(['plugin.guide/inspect'])
+  extended.select('plugin.guide/inspect')
+  expect(run).toHaveBeenCalledOnce()
+  remove()
+  const add = (name: string) => {
+    instance.actions.openContent(SESSION, { kind: 'text', contentId: `dsh-resource://file/session/s/${name}`, title: name }, () => {})
+    return Object.values(instance.getSnapshot().bySession[SESSION]!.layout.tabs).find(tab => tab.title === name)!
+  }
+  const first = add('first'), second = add('second'), third = add('third')
+  const paneId = instance.getSnapshot().bySession[SESSION]!.layout.activePaneId
+  const target = (tab: typeof first) => ({ kind: 'tab', value: { sessionId: SESSION, paneId, tab } }) as const
+  const right = h.menus.resolve(target(first))
+  expect(right.source.getSnapshot().map(action => [action.id, action.icon !== undefined])).toEqual([
+    ['sidebar.close/close', true], ['sidebar.close/others', false], ['sidebar.close/right', false],
+  ])
+  h.ctx.sidebarRight.closeIn(SESSION, second.id)
+  right.select('sidebar.close/right')
+  expect(instance.getSnapshot().bySession[SESSION]!.layout.tabs[third.id]).toBeUndefined()
+  expect(instance.getSnapshot().bySession[SESSION]!.layout.tabs[first.id]).toBeDefined()
+  const others = h.menus.resolve(target(first))
+  others.select('sidebar.close/others')
+  expect(Object.keys(instance.getSnapshot().bySession[SESSION]!.layout.tabs)).toEqual([first.id])
+  const close = h.menus.resolve(target(first))
+  close.select('sidebar.close/close')
+  expect(instance.getSnapshot().bySession[SESSION]!.layout.tabs[first.id]).toBeUndefined()
+  const fresh = add('fresh')
+  const stale = h.menus.resolve(target(fresh))
+  h.ctx.sidebarRight.closeIn(SESSION, fresh.id)
+  stale.select('sidebar.close/close')
+  expect(instance.getSnapshot().bySession[SESSION]!.layout.tabs[fresh.id]).toBeUndefined()
+  instance.clearPersisted()
+})
diff --git a/packages/client/ui-sidebar-right/tests/expand-button.client.spec.tsx b/packages/client/ui-sidebar-right/tests/expand-button.client.spec.tsx
index dc0366ccfb..45da0303dc 100644
--- a/packages/client/ui-sidebar-right/tests/expand-button.client.spec.tsx
+++ b/packages/client/ui-sidebar-right/tests/expand-button.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * The way back into a hidden panel: the header's corner button exists exactly
  * while the panel is collapsed, asks for it to expand, and renders nothing
@@ -23,6 +24,7 @@ const standard: GlobalStandardProps & SessionStandardProps = {
   usePanelInfo: unused, useSessions: unused, useSessionStatus: unused,
   useSessionRetainInfo: unused, useResource: unused, useWorkspaces: unused,
   ...allowAllAccess,
+  useContextMenu: contextMenuHook(),
   inputActions: { insertQuote: () => false, captureInsertion: unused, insertText: unused, setDraft: unused, persistDraft: unused,
     addAttachments: unused, removeAttachment: unused, pruneAttachments: unused, submit: unused },
 }
diff --git a/packages/client/ui-sidebar-right/tests/guide-body.client.spec.tsx b/packages/client/ui-sidebar-right/tests/guide-body.client.spec.tsx
index 82b8d386e0..352860bc2d 100644
--- a/packages/client/ui-sidebar-right/tests/guide-body.client.spec.tsx
+++ b/packages/client/ui-sidebar-right/tests/guide-body.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * The guide tab's body: the chain seam, and the shipped guide behind it.
  *
@@ -34,6 +35,7 @@ const standard: GlobalStandardProps & SessionStandardProps = {
   usePanelInfo: unused, useSessions: unused, useSessionStatus: unused,
   useSessionRetainInfo: unused, useResource: unused, useWorkspaces: unused,
   ...allowAllAccess,
+  useContextMenu: contextMenuHook(),
   inputActions: { insertQuote: () => false, captureInsertion: unused, insertText: unused, setDraft: unused, persistDraft: unused,
     addAttachments: unused, removeAttachment: unused, pruneAttachments: unused, submit: unused },
 }
diff --git a/packages/client/ui-sidebar-right/tests/seat.client.spec.tsx b/packages/client/ui-sidebar-right/tests/seat.client.spec.tsx
index 9d20ce5ba2..7ee9fd3559 100644
--- a/packages/client/ui-sidebar-right/tests/seat.client.spec.tsx
+++ b/packages/client/ui-sidebar-right/tests/seat.client.spec.tsx
@@ -1,7 +1,8 @@
 // @vitest-environment jsdom
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /** Sidebar presentation and tab subscriptions through the production slot renderer. */
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
-import { act, fireEvent } from '@testing-library/react'
+import { act, fireEvent, waitFor } from '@testing-library/react'
 import { useEffect, useState, useSyncExternalStore } from 'react'
 import { SlotTestRuntime, type SlotView } from '@deepseek-ai/dsh-client-test-runtime'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
@@ -80,9 +81,11 @@ async function mountSeat(viewportWidth = 1440, canShow = true, entryCount = 0, o
   const catalog = createSnapshotStore<readonly ShortcutCatalogEntry[]>([])
   runtime.ctx.provide('shortcuts', { register: () => () => {}, catalog } as never)
   runtime.slots.installLocale(locale)
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   await runtime.declare({
     'sidebar-right.test.opener': { kind: 'single', scope: 'session' },
     'rightbar': { kind: 'single', scope: 'root' },
+    'shell.overlay': { kind: 'list', scope: 'root' },
     'conversation.session.header.corner': { kind: 'single', scope: 'session' },
   })
   await runtime.sessions.add({ id: SESSION })
@@ -907,7 +910,9 @@ describe('slot-owned useTabInfo', () => {
     })
     expect(h.view.container.querySelector('[data-sidebar-right-unavailable]')).not.toBeNull()
     const chip = element(h.view.container, '[data-dockkit-tab]')
+    h.runtime.renderSlot('shell.overlay', {})
     fireEvent.contextMenu(chip)
+    await waitFor(() => { expect(menu).toBeDefined() })
     expect(menu?.tab.id).toBe(chip.getAttribute('data-dockkit-tab'))
     act(() => { menu?.dismiss() })
     expect(document.querySelector('[data-dockkit-tab-menu]')).toBeNull()
diff --git a/packages/client/ui-sidebar-right/tests/service.client.spec.ts b/packages/client/ui-sidebar-right/tests/service.client.spec.ts
index 6125e1ae7c..29e10f4e3b 100644
--- a/packages/client/ui-sidebar-right/tests/service.client.spec.ts
+++ b/packages/client/ui-sidebar-right/tests/service.client.spec.ts
@@ -787,3 +787,26 @@ it('releases close handlers without a stale disposer removing a replacement', ()
   expect(h.layout().tabs[tabId]).toBeUndefined()
   expect(second).toHaveBeenCalledOnce()
 })
+
+it('limits batch-close candidates to the captured pane and invalidates a moved anchor', () => {
+  const h = harness()
+  h.expand()
+  const unpublish = h.publish()
+  h.controller.openResource('dsh-resource://file/session/s-test/first.txt')
+  const first = h.tabOf('first.txt'), pane = findTabPane(h.layout(), first).id
+  h.controller.openResource('dsh-resource://file/session/s-test/second.txt', { paneId: pane })
+  const second = h.tabOf('second.txt')
+  const other = h.controller.split(pane)!
+  h.controller.openResource('dsh-resource://file/session/s-test/other.txt', { paneId: other })
+  const candidates = h.controller.menuTabs(SESSION, pane, first)
+  expect(candidates).toMatchObject({ close: true, right: [second] })
+  expect(candidates.all).not.toContain(h.tabOf('other.txt'))
+  expect(h.controller.menuTabs(SESSION, other, first)).toEqual({ all: [], right: [], close: false })
+  const cleanup = vi.fn()
+  const unregister = h.controller.registerCloseHandler('text', cleanup)
+  for (const id of candidates.right) h.controller.closeIn(SESSION, id)
+  expect(cleanup).toHaveBeenCalledTimes(1)
+  expect(h.layout().tabs[h.tabOf('other.txt')]).toBeDefined()
+  expect(h.layout().tabs[first]).toBeDefined()
+  unregister(); unpublish(); h.unadopt()
+})
diff --git a/packages/client/ui-sidebar-right/tests/tab-menu-content.client.spec.tsx b/packages/client/ui-sidebar-right/tests/tab-menu-content.client.spec.tsx
new file mode 100644
index 0000000000..58d2a96c29
--- /dev/null
+++ b/packages/client/ui-sidebar-right/tests/tab-menu-content.client.spec.tsx
@@ -0,0 +1,20 @@
+// @vitest-environment jsdom
+/** A detached tab cannot render Session-scoped extension rows. */
+import type { ReactNode } from 'react'
+import { cleanup, render } from '@testing-library/react'
+import { afterEach, expect, it, vi } from 'vitest'
+import type { ComponentProps } from 'react'
+import { TabMenuContent } from '../src/client/shell/TabMenuContent.tsx'
+
+afterEach(cleanup)
+it('renders no extension rows for another target or an unretained Session', () => {
+  const renderSlot = vi.fn(() => null)
+  const props = { dismiss: vi.fn(), useViews: (select: (views: never[]) => unknown) => select([]),
+    SessionProvider: ({ children }: { children: ReactNode }) => children,
+    renderSlot, target: { kind: 'image', value: { url: 'blob:original' } },
+  } as ComponentProps<typeof TabMenuContent>
+  const view = render(<TabMenuContent {...props} />)
+  view.rerender(<TabMenuContent {...props} target={{ kind: 'tab', value: { sessionId: 'gone', paneId: 'gone', tab: {} } } as never} />)
+  expect(view.container.textContent).toBe('')
+  expect(renderSlot).not.toHaveBeenCalled()
+})
diff --git a/packages/client/ui-sidebar-right/tsconfig.json b/packages/client/ui-sidebar-right/tsconfig.json
index 5133b6b6f2..136d705456 100644
--- a/packages/client/ui-sidebar-right/tsconfig.json
+++ b/packages/client/ui-sidebar-right/tsconfig.json
@@ -49,6 +49,9 @@
     },
     {
       "path": "../../util/brand"
+    },
+    {
+      "path": "../ui-context-menu"
     }
   ]
 }
diff --git a/packages/client/ui-sidebar-terminal/package.json b/packages/client/ui-sidebar-terminal/package.json
index 324b9d86ab..ecaf3d8145 100644
--- a/packages/client/ui-sidebar-terminal/package.json
+++ b/packages/client/ui-sidebar-terminal/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-sidebar-terminal",
   "description": "Interactive shell tabs for the right Sidebar",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-sidebar-terminal/tests/cleanup.client.spec.tsx b/packages/client/ui-sidebar-terminal/tests/cleanup.client.spec.tsx
index 390fecc4da..08478661fc 100644
--- a/packages/client/ui-sidebar-terminal/tests/cleanup.client.spec.tsx
+++ b/packages/client/ui-sidebar-terminal/tests/cleanup.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /** Cleanup errors remain reachable after the terminal tab has disappeared. */
 import { afterEach, expect, it, vi } from 'vitest'
 import { cleanup, fireEvent, render, within } from '@testing-library/react'
@@ -14,7 +15,9 @@ type CleanupProps = Parameters<typeof TerminalCleanup>[0]
 const unusedHook = (): never => { throw new Error('Terminal cleanup does not consume global hooks') }
 const standard: Omit<CleanupProps, 'useCloseFailures' | 'retryClose' | 't'> = {
   useSessions: unusedHook, useSessionStatus: unusedHook, useSessionRetainInfo: unusedHook, usePanelInfo: unusedHook,
-  useWorkspaces: unusedHook, useResource: unusedHook,
+  useWorkspaces: unusedHook,
+  useContextMenu: contextMenuHook(),
+  useResource: unusedHook,
   ...allowAllAccess,
 }
 
diff --git a/packages/client/ui-sidebar-terminal/tests/terminal-guide.client.spec.tsx b/packages/client/ui-sidebar-terminal/tests/terminal-guide.client.spec.tsx
index 281695be1d..b8cb722130 100644
--- a/packages/client/ui-sidebar-terminal/tests/terminal-guide.client.spec.tsx
+++ b/packages/client/ui-sidebar-terminal/tests/terminal-guide.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /** Guide shell discovery, direct launch and cancellation stay within the entry lifetime. */
 import { act, cleanup, fireEvent, render } from '@testing-library/react'
 import { afterEach, expect, it, vi } from 'vitest'
@@ -23,6 +24,7 @@ const standard: GlobalStandardProps & SessionStandardProps = {
   usePanelInfo: unused, useSessions: unused, useSessionStatus: unused,
   useSessionRetainInfo: unused, useResource: unused, useWorkspaces: unused,
   ...allowAllAccess,
+  useContextMenu: contextMenuHook(),
   inputActions: { insertQuote: () => false, captureInsertion: unused, insertText: unused, setDraft: unused, persistDraft: unused,
     addAttachments: unused, removeAttachment: unused, pruneAttachments: unused, submit: unused },
 }
diff --git a/packages/client/ui-sidebar/README.i18n.yaml b/packages/client/ui-sidebar/README.i18n.yaml
index 7ba295bb7e..50458ab3da 100644
--- a/packages/client/ui-sidebar/README.i18n.yaml
+++ b/packages/client/ui-sidebar/README.i18n.yaml
@@ -15,17 +15,17 @@
   en: d152484eb41ac6b4
   zh: 09388d293f9be9cb
 /deepseek-ai-dsh-client-ui-sidebar/use-this-package:
-  en: a970f0547496634f
-  zh: 36ef9a85b26e19f1
+  en: bbd3b8e6b9d87124
+  zh: 9d387d1925599c13
 /deepseek-ai-dsh-client-ui-sidebar/use-this-package/brand-and-new-session:
-  en: 44db2d448bc2ea6d
-  zh: cbb1143afb524d5b
+  en: 6bc49e22f0f73f07
+  zh: 10883997ccb7d145
 /deepseek-ai-dsh-client-ui-sidebar/use-this-package/global-panel-entries:
   en: e7f316023445511b
   zh: 6271c8c011533877
 /deepseek-ai-dsh-client-ui-sidebar/use-this-package/collapse-behavior:
-  en: 20e744360b4be2cc
-  zh: a90be7e8526bbb21
+  en: 10381cbac96069a3
+  zh: c5849741a0be2f00
 /deepseek-ai-dsh-client-ui-sidebar/use-this-package/macos-desktop:
   en: 28e3639ed58492e0
   zh: 4896acd767287c8a
diff --git a/packages/client/ui-sidebar/README.md b/packages/client/ui-sidebar/README.md
index a307aeffc0..8783f2622c 100644
--- a/packages/client/ui-sidebar/README.md
+++ b/packages/client/ui-sidebar/README.md
@@ -29,8 +29,12 @@ The dsh web client sidebar lets users recognize the active build, start a new se
 
 The sidebar is the navigation shell: users see the brand, start new sessions, collapse the rail, and reach Settings. Feature plugins fill its seats — ui-workspace fills `sidebar.workspaces`, ui-settings registers the trigger row and settings panel at `sidebar.settings`.
 
+Below 768px, without a native Windows caption, the sidebar keeps its expanded content mounted inside the frame's drawer. The drawer initially focuses its collapse toggle, traps keyboard focus, closes with Escape or a mask press, and restores the invoking control unless a foreground dialog remains open. When an open drawer becomes a collapsed rail, focus remaining in its wide content transfers to the rail toggle before that content unmounts. When a collapsed rail becomes a hidden drawer, the sidebar transfers its own focus to its header opener, preserving focus elsewhere and in foreground dialogs. This includes focus in a global menu identified by the original sidebar control's `aria-controls`. Returning from a closed drawer renders the compact rail immediately, without a crossfade. Its toggle tooltip renders outside the drawer. Opening it does not resize the conversation.
+
 ### Brand and New Session
 
+When the sidebar is fully hidden, Web shows only the header's sidebar opener. Desktop hosts that mount this header seat also keep New Session; Windows with a native caption keeps its New Session control in that caption instead.
+
 The expanded brand row renders `sidebar.brand.mark` and `sidebar.brand.name` as independent single slots; the collapsed rail renders the same mark slot. On Web and Windows desktop, clicking the expanded brand starts a new session; hovering or focusing it shows no tooltip. Without occupants, the shell uses the fish mark and a localized local-build label. A complete build stacks a code badge below the label as `version[-commit][-dirty]`, using `DSH_CLIENT_VERSION`, the optional 7-character `DSH_CLIENT_COMMIT_HASH`, and `DSH_CLIENT_GIT_DIRTY=true`; missing version metadata omits the badge. Clicking the fallback mark or label of such a build copies that badge text instead of starting a session, also on macOS desktop, and a successful write shows a Version copied toast. New Session targets the explicit Workspace used by a scoped action, otherwise the current Session's Workspace, otherwise the most recently active Workspace; when none exists it clears into the blank New Session page. The expanded New Session button displays the effective binding as trailing grey text on keyboard focus regardless of hover capability, and on hover when the device supports it. While the shortcut is visible, the centered icon and label fade before it when space is narrow; CSS reserves the shortcut’s width without measuring the button. Icon-only controls retain tooltips with platform-formatted keycaps, including the resident macOS header control when the sidebar is hidden. All controls expose `aria-keyshortcuts`. While the global access snapshot excludes `session/create`, the brand row stays inert and neither the New Session button nor the window-chrome New Session control renders; the Host still decides every create request.
 
 ### Global panel entries
@@ -45,7 +49,7 @@ The sidebar and conversation-header toggles show the effective shortcut from the
 
 The top expand button hosts the optional, non-interactive `sidebar.toggle.badge` slot while collapsed. Its occupant supplies status and tooltip content without adding another action or changing the button's navigation behavior.
 
-During a live collapse, the expanded content fades out at its current width, the upper controls share one fade and leftward translation into the 56px rail, and the layout's column slide ends the motion. A page that starts collapsed renders the rail statically, and reduced-motion mode disables both transitions. The bottom-pinned `sidebar.settings` control shares the fade timing but has no horizontal translation.
+Expanded content follows the frame's column width, including its transitions. During a live collapse, the content fades out at its frozen expanded width, the upper controls share one fade and leftward translation into the 56px rail, and the layout's column slide ends the motion. A page that starts collapsed renders the rail statically, and reduced-motion mode disables both transitions. The bottom-pinned `sidebar.settings` control shares the fade timing but has no horizontal translation.
 
 On Windows Electron, `html[data-windows-titlebar]` fixes the sidebar toggle in the caption's top-left corner in both states, aligned with New Session's left edge only when expanded. The expanded brand sits below the caption and above New Session, with 8px of extra space above that button. Collapsing hides the brand and sidebar content and places New Session between the sidebar toggle and the Desktop-owned menus. The sidebar sets the root `--dsh-windows-menu-start` to 84px when collapsed; the Desktop preload uses it to position its menu after New Session and defaults to 48px when expanded. Caption icon buttons use centered 16px glyphs in 28px controls with the compact control radius and exclude themselves from the window drag region. The sidebar toggle and New Session bubbles open below the caption, where the Desktop-owned menu text cannot cover them; an occupying `sidebar.toggle.badge` chooses its own bubble side.
 
diff --git a/packages/client/ui-sidebar/README.zh.md b/packages/client/ui-sidebar/README.zh.md
index 07207b894b..15acbfc859 100644
--- a/packages/client/ui-sidebar/README.zh.md
+++ b/packages/client/ui-sidebar/README.zh.md
@@ -29,8 +29,12 @@ dsh Web 客户端的侧边栏让用户识别当前构建、启动新会话、将
 
 侧边栏是导航外壳：用户看到品牌、启动新会话、折叠轨道并到达 Settings。功能插件填充它的席位——ui-workspace 填充 `sidebar.workspaces`，ui-settings 在 `sidebar.settings` 注册触发行与设置面板。
 
+宽度低于 768px 且没有原生 Windows 顶栏时，侧边栏在框架抽屉内保留展开内容。抽屉首先聚焦收起按钮，并限制键盘焦点范围，支持 Escape 和点击蒙层关闭，并在没有上层弹窗时将焦点还给打开它的控件。打开的抽屉切换为收起图标栏时，仍在展开内容中的焦点会在该内容卸载前转交给图标栏开关。收起的图标栏变为隐藏抽屉时，侧栏将自身焦点转交给顶部展开按钮，保留其他区域和上层弹窗的焦点。这也包括由原侧栏控件的 `aria-controls` 标识的全局菜单中的焦点。关闭的抽屉切回图标栏时，立即使用紧凑布局，不播放交叉淡入淡出。开关的提示气泡在抽屉外渲染。打开抽屉不改变会话宽度。
+
 ### 品牌与 New Session
 
+侧边栏完全隐藏时，Web 的标题栏只显示展开侧边栏按钮。挂载该标题栏插槽的桌面宿主还会保留新建会话按钮；带有原生标题栏的 Windows 客户端则在原生标题栏中保留该按钮。
+
 展开的品牌行把 `sidebar.brand.mark` 与 `sidebar.brand.name` 渲染为两个独立的 single slot；收起轨道则渲染同一个 mark slot。在 Web 和 Windows 桌面端，点击展开态的品牌会新建会话，悬停或聚焦时不显示 tooltip。没有占位者时，外壳使用鱼形标记和本地化的本地构建标签。完整构建会在标签下方显示代码徽标；该徽标使用 `DSH_CLIENT_VERSION`、可选的 7 位 `DSH_CLIENT_COMMIT_HASH` 与 `DSH_CLIENT_GIT_DIRTY=true` 组装成 `version[-commit][-dirty]`；缺少版本元数据时不显示徽标。此类构建中点击回退的标记或标签会复制该徽标文本而非新建会话，macOS 桌面端同样适用；写入成功后弹出“版本号复制成功”toast。New Session 优先使用作用域操作明确指定的 Workspace，否则使用当前 Session 所属 Workspace，再否则使用最近活跃 Workspace；一个 Workspace 都没有时则清空选择，进入空白 New Session 页面。 展开态的新建会话按钮在键盘聚焦时于右侧以灰色文字显示当前有效绑定，不受设备悬停能力限制；支持悬停的设备也会在悬停时显示。快捷键可见且空间较窄时，居中的图标与文字在快捷键之前渐隐；CSS 为快捷键保留宽度，无需测量按钮。纯图标控件保留使用平台键位样式的 tooltip，侧栏隐藏时常驻的 macOS 头部控件也保持一致。所有控件均提供 `aria-keyshortcuts`。全局访问快照不含 `session/create` 时，品牌行不可点击，New Session 按钮和窗口标题栏中的 New Session 控件都不渲染；每个新建请求仍由 Host 判定。
 
 ### 全局面板入口
@@ -45,7 +49,7 @@ root 作用域的 `sidebar.panellist.actions` list 有注册项时，导航区
 
 侧栏收起时，顶部展开按钮承载可选、不可交互的 `sidebar.toggle.badge` slot。占用方提供状态和提示内容，不增加操作，也不改变按钮的导航行为。
 
-实时收起时，展开内容在当前宽度淡出，上方控件共用同一段透明度渐变，并向左平移进入 56px 轨道，由布局的栏滑动结束整段动画。页面初始即为收起状态时会静态渲染轨道；减少动态效果模式会禁用两段过渡。固定在底部的 `sidebar.settings` 控件共用相同的透明度渐变时序，但不发生横向位移。
+展开内容跟随框架的列宽及其过渡。实时收起时，内容固定在展开宽度淡出，上方控件共用同一段透明度渐变，并向左平移进入 56px 轨道，由布局的栏滑动结束整段动画。页面初始即为收起状态时会静态渲染轨道；减少动态效果模式会禁用两段过渡。固定在底部的 `sidebar.settings` 控件共用相同的透明度渐变时序，但不发生横向位移。
 
 在 Windows Electron 中，`html[data-windows-titlebar]` 将两种状态下的侧栏开关固定在顶栏左上角，仅在展开态与新建会话按钮左边缘对齐。展开态品牌位于顶栏下方、新建会话按钮上方，按钮上方额外留出 8px。收起后，品牌和侧栏内容隐藏，新建会话按钮排在侧栏开关与 Desktop 菜单之间。侧栏在收起态将根元素的 `--dsh-windows-menu-start` 设为 84px；Desktop preload 使用它将菜单放在新建会话之后，展开态默认为 48px。顶栏图标按钮采用紧凑控件圆角的 28px 控件，图标为居中 16px，并从窗口拖拽区域中排除。侧栏开关与新建会话的悬停提示在顶栏下方展开，Desktop 菜单文字不会盖住它们；占用 `sidebar.toggle.badge` 的控件自行决定气泡展开方向。
 
diff --git a/packages/client/ui-sidebar/package.json b/packages/client/ui-sidebar/package.json
index 5813da216a..b6e9cc4a6d 100644
--- a/packages/client/ui-sidebar/package.json
+++ b/packages/client/ui-sidebar/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-sidebar",
   "description": "Sidebar plugin: session multi-level tree, search, grouping, state dots",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-sidebar/src/client/HeaderLeadingControls.tsx b/packages/client/ui-sidebar/src/client/HeaderLeadingControls.tsx
index 618bdd26e7..5b3a7ac9c2 100644
--- a/packages/client/ui-sidebar/src/client/HeaderLeadingControls.tsx
+++ b/packages/client/ui-sidebar/src/client/HeaderLeadingControls.tsx
@@ -16,24 +16,24 @@ export type HeaderLeadingControlsProps =
 
 /**
  * Sidebar-open and New Session controls in the frame's window-chrome seat.
- * On macOS desktop a collapsed sidebar hides entirely (no rail), taking both
- * controls off screen; this occupant puts them back beside the traffic
- * lights. The frame mounts the seat only in that state and owns its
- * placement, so the occupant renders unconditionally.
+ * The frame mounts this seat for hidden sidebars and owns its placement.
+ * Web shows only the sidebar opener; Desktop also retains New Session.
  * @param props - Injected sidebar actions, the global access Hook, and the sidebar locale seat.
- * @returns the sidebar toggle, plus the New Session control while the access snapshot allows `session/create`.
+ * @returns the sidebar toggle, plus New Session on Desktop while access allows `session/create`.
  */
 export function HeaderLeadingControls({
   toggleSidebar, startSession, trackEntryClick, useRemoteAccess, useShortcuts, t,
 }: HeaderLeadingControlsProps) {
   // A page whose access snapshot excludes starting a Session keeps only the sidebar toggle here.
   const canStartSession = useRemoteAccess('session/create')
+  const desktop = document.documentElement.hasAttribute('data-platform')
   const shortcut = useShortcuts(rows => rows.find(row => row.id === 'sidebar.left.toggle'))
   const newShortcut = useShortcuts(rows => rows.find(row => row.id === 'session.new'))
   return (
     <div className={css.controls}>
       <Tooltip label={t('toggle.open')} shortcutKeys={shortcut?.keys} delayMs={500}>
         <button
+          data-sidebar-opener
           type="button"
           className={css.iconButton}
           aria-label={t('toggle.open')}
@@ -43,7 +43,7 @@ export function HeaderLeadingControls({
           <IconPanelLeftOutlineRegular size={16} />
         </button>
       </Tooltip>
-      {canStartSession && (
+      {desktop && canStartSession && (
         <Tooltip label={t('session.new.label')} shortcutKeys={newShortcut?.keys} delayMs={500}>
           <button
             type="button"
diff --git a/packages/client/ui-sidebar/src/client/SidebarRoot.module.css b/packages/client/ui-sidebar/src/client/SidebarRoot.module.css
index 2560e37509..387b6f804f 100644
--- a/packages/client/ui-sidebar/src/client/SidebarRoot.module.css
+++ b/packages/client/ui-sidebar/src/client/SidebarRoot.module.css
@@ -1,5 +1,5 @@
 /* Sidebar column: vertical stack, padding 8/6, sidebar
-   fill + 1px right border painted by the layout column. Collapse is a
+   fill and desktop divider painted by the layout column. Collapse is a
    slide + crossfade, not a morph: the content holds its frozen expanded
    layout (inline width set by the component) and fades in place (.fading)
    while the sliding column (AppFrame grid tracks) clips it; the rail layout
@@ -25,6 +25,10 @@
   --dsh-scrollbar-thumb-hover: var(--dsw-alias-scrollbar-hover-l2);
 }
 
+:global([data-animating]:not([data-dragging])) .root {
+  transition: width var(--ds-transition-duration-slow) var(--ds-ease-in-out);
+}
+
 /* macOS desktop: the AppFrame column owns the translucent sidebar tint; an
    opaque fill here would sit on top of it and block the window vibrancy. */
 :global([data-platform='darwin']) .root {
@@ -445,22 +449,22 @@
 /* macOS: the themed elevated fill reads as a foreign slab on the vibrancy
    sidebar; a white wash sits in the glass like native macOS sidebar
    controls. Dark keeps the same white ink at lower alpha. */
-:global([data-platform='darwin']) .newSession {
+:global([data-platform='darwin']) :where(.root:not([role='dialog'])) .newSession {
   background: rgb(255 255 255 / 0.55);
 }
 
 @media (hover: hover) {
-  :global([data-platform='darwin']) .newSession:hover {
+  :global([data-platform='darwin']) :where(.root:not([role='dialog'])) .newSession:hover {
     background: rgb(255 255 255 / 0.3);
   }
 }
 
-:global([data-platform='darwin']) :global([data-ds-dark-theme]) .newSession {
+:global([data-platform='darwin']) :global([data-ds-dark-theme]) :where(.root:not([role='dialog'])) .newSession {
   background: rgb(255 255 255 / 0.15);
 }
 
 @media (hover: hover) {
-  :global([data-platform='darwin']) :global([data-ds-dark-theme]) .newSession:hover {
+  :global([data-platform='darwin']) :global([data-ds-dark-theme]) :where(.root:not([role='dialog'])) .newSession:hover {
     background: rgb(255 255 255 / 0.2);
   }
 }
@@ -668,6 +672,7 @@
 }
 
 @media (prefers-reduced-motion: reduce) {
+  :global([data-animating]:not([data-dragging])) .root,
   .wide,
   .fading > *,
   .railIn .iconButton,
diff --git a/packages/client/ui-sidebar/src/client/SidebarRoot.tsx b/packages/client/ui-sidebar/src/client/SidebarRoot.tsx
index c4083d223d..f03ecc32aa 100644
--- a/packages/client/ui-sidebar/src/client/SidebarRoot.tsx
+++ b/packages/client/ui-sidebar/src/client/SidebarRoot.tsx
@@ -16,11 +16,12 @@
  * scrollbar indirection away while it is elsewhere, so a list the user is not
  * pointing at carries no bar.
  */
-import { useEffect, useRef, useState } from 'react'
+import { useEffect, useLayoutEffect, useRef, useState } from 'react'
 import clsx from 'clsx'
 import {
-  FishLogo, IconAppsAddOutlineRegular, IconNewChatOutlineMedium, IconNewChatOutlineRegular, IconPanelLeftOutlineRegular,
-  isDarwinDesktop, Menu, ShortcutKeys, Toast, Tooltip, writeClipboard,
+  FishLogo, IconAppsAddOutlineRegular, IconNewChatOutlineMedium, IconNewChatOutlineRegular,
+  IconPanelLeftOutlineRegular, focusWithoutRing, isBehindModal, isDarwinDesktop, Menu, ShortcutKeys, Toast, Tooltip, useModalLayer,
+  writeClipboard,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { InjectFace, PropsRenderSlots, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
 import type {
@@ -130,6 +131,7 @@ function PanelMoreMenu({ wide, label, entries, onOpen, onPinnedChange, trackEntr
 export function SidebarRoot({
   collapsed,
   width,
+  drawer,
   startSession,
   toggleSidebar,
   selectPanel,
@@ -155,14 +157,15 @@ export function SidebarRoot({
   const toggleLabel = collapsed ? t('toggle.open') : t('toggle.collapse')
   // Wide content stays mounted while the collapse animates (fading via
   // .collapsed .wide), unmounts at settle, and remounts right away on expand.
+  // A closed drawer retains its content with the rail phase already settled.
   const [settled, setSettled] = useState(collapsed)
   useEffect(() => {
-    if (!collapsed) { setSettled(false); return }
+    if (drawer || !collapsed) { setSettled(collapsed); return }
     const timer = window.setTimeout(() => { setSettled(true) }, COLLAPSE_SETTLE_MS)
     return () => { window.clearTimeout(timer) }
-  }, [collapsed])
+  }, [collapsed, drawer])
   const windowsTitlebar = document.documentElement.hasAttribute('data-windows-titlebar')
-  const wide = windowsTitlebar ? !collapsed : !collapsed || !settled
+  const wide = drawer || (windowsTitlebar ? !collapsed : !collapsed || !settled)
   // The Windows titlebar hosts the New Session controls while the sidebar is collapsed.
   const openNewSession = (): void => {
     trackEntryClick({ menu_name: 'new_session', position: windowsTitlebar && collapsed ? 'titlebar' : 'sidebar' })
@@ -176,18 +179,29 @@ export function SidebarRoot({
   // && wide): the sliding column then clips it instead of reflowing it. The
   // rail layout (.collapsed styles) only applies once the fade settles.
   const lastWideWidth = useRef(width)
-  if (!collapsed) lastWideWidth.current = width
+  if (drawer || !collapsed) lastWideWidth.current = width
 
-  // Rail-in only crossfades a live collapse: a refresh straight into the
-  // collapsed state renders the rail statically (no delay-hidden icons).
-  const everWide = useRef(!collapsed)
-  if (!collapsed) everWide.current = true
+  // A closed drawer returns to the static rail; only a live collapse fades it in.
+  const animateRail = useRef(!collapsed)
+  if (drawer || !collapsed) animateRail.current = !collapsed
 
   // Scrollbars in the column follow the pointer (.quietBars rebinds them
   // away): drawn while it is inside, and for SCROLLBAR_LINGER_MS after it
   // leaves. A pointer that returns within that window cancels the pending
   // hide rather than restarting from a hidden bar.
   const column = useRef<HTMLDivElement>(null)
+  const sidebarFocus = useRef<Element | null>(null)
+  useModalLayer(column, drawer && !collapsed, toggleSidebar)
+  useLayoutEffect(() => {
+    if (!collapsed) return
+    const controlled = sidebarFocus.current?.getAttribute('aria-controls')?.split(/\s+/) ?? []
+    const ownsMenuFocus = controlled.some(id => document.getElementById(id)?.contains(document.activeElement))
+    if (sidebarFocus.current !== document.activeElement && !ownsMenuFocus) return
+    const opener = drawer
+      ? column.current?.ownerDocument.querySelector<HTMLElement>('[data-sidebar-opener]')
+      : column.current?.querySelector<HTMLElement>('[data-sidebar-toggle]')
+    if (opener != null && !isBehindModal(opener)) focusWithoutRing(opener, { preventScroll: true })
+  }, [drawer, collapsed])
   const [pointerInside, setPointerInside] = useState(false)
   const lingerTimer = useRef<number | undefined>(undefined)
   const armLinger = (): void => {
@@ -243,8 +257,10 @@ export function SidebarRoot({
   // (the expand affordance, figma sidebar-hover flow). Expanded it is a plain
   // panel icon.
   const toggle = (
-    <Tooltip label={toggleLabel} shortcutKeys={shortcut?.keys} delayMs={500} side={captionTooltipSide}>
+    <Tooltip label={toggleLabel} shortcutKeys={shortcut?.keys} delayMs={500} side={captionTooltipSide} portal={drawer}>
       <button
+        data-sidebar-toggle
+        data-modal-autofocus={drawer || undefined}
         type="button"
         className={clsx(css.iconButton, css.toggle)}
         aria-label={toggleLabel}
@@ -266,11 +282,17 @@ export function SidebarRoot({
   return (
     <div
       ref={column}
+      onFocusCapture={(event) => { sidebarFocus.current = event.target }}
+      role={drawer ? 'dialog' : undefined}
+      data-shortcut-modal={drawer ? 'sidebar' : undefined}
+      aria-modal={drawer && !collapsed ? true : undefined}
+      aria-label={drawer ? t('navigation.label') : undefined}
+      tabIndex={drawer ? -1 : undefined}
       className={clsx(
-        css.root, !wide && css.collapsed, !wide && everWide.current && css.railIn,
-        collapsed && wide && css.fading, !pointerInside && css.quietBars,
+        css.root, !wide && css.collapsed, !wide && animateRail.current && css.railIn,
+        !drawer && collapsed && wide && css.fading, !pointerInside && css.quietBars,
       )}
-      style={wide ? { width: collapsed ? lastWideWidth.current : width } : undefined}
+      style={wide ? { width: !drawer && collapsed ? lastWideWidth.current : width } : undefined}
       onPointerEnter={() => {
         cancelLinger()
         setPointerInside(true)
diff --git a/packages/client/ui-sidebar/src/client/contract/slots.ts b/packages/client/ui-sidebar/src/client/contract/slots.ts
index 9e018b8be6..7b6662b6c7 100644
--- a/packages/client/ui-sidebar/src/client/contract/slots.ts
+++ b/packages/client/ui-sidebar/src/client/contract/slots.ts
@@ -125,7 +125,7 @@ export interface SidebarPanelActionsOwnerProps {
 export interface SidebarSectionOwnerProps {
   /** Shell fold-state output: wide renders the full browser, rail the icon column. */
   wide: boolean
-  /** Rail icons request expansion; the browser rides the wide flip for focus. */
+  /** Ensure the sidebar is visible; safe to call while already expanded. */
   expandSidebar: () => void
 }
 
diff --git a/packages/client/ui-sidebar/src/client/locales.ts b/packages/client/ui-sidebar/src/client/locales.ts
index a41dd17a85..7dd30be7ac 100644
--- a/packages/client/ui-sidebar/src/client/locales.ts
+++ b/packages/client/ui-sidebar/src/client/locales.ts
@@ -7,6 +7,7 @@ export const zh = {
   'toggle.open': '打开侧边栏',
   'toggle.collapse': '收起侧边栏',
   'panels.label': '全局面板',
+  'navigation.label': '导航',
   'panels.more': '更多',
   'version.copied': '版本号复制成功',
 } satisfies Record<string, string>
@@ -21,6 +22,7 @@ export const en = {
   'toggle.open': 'Open sidebar',
   'toggle.collapse': 'Collapse sidebar',
   'panels.label': 'Global panels',
+  'navigation.label': 'Navigation',
   'panels.more': 'More',
   'version.copied': 'Version copied',
 } satisfies Record<SidebarKey, string>
@@ -32,6 +34,7 @@ export const ja = {
   'toggle.open': 'サイドバーを開く',
   'toggle.collapse': 'サイドバーを折りたたむ',
   'panels.label': 'グローバルパネル',
+  'navigation.label': 'ナビゲーション',
   'panels.more': 'その他',
   'version.copied': 'バージョンをコピーしました',
 } satisfies Record<keyof typeof en, string>
@@ -43,6 +46,7 @@ export const es = {
   'toggle.open': 'Abrir barra lateral',
   'toggle.collapse': 'Contraer barra lateral',
   'panels.label': 'Paneles globales',
+  'navigation.label': 'Navegación',
   'panels.more': 'Más',
   'version.copied': 'Versión copiada',
 } satisfies Record<keyof typeof en, string>
@@ -54,6 +58,7 @@ export const fr = {
   'toggle.open': 'Ouvrir la barre latérale',
   'toggle.collapse': 'Réduire la barre latérale',
   'panels.label': 'Panneaux globaux',
+  'navigation.label': 'Navigation',
   'panels.more': 'Plus',
   'version.copied': 'Version copiée',
 } satisfies Record<keyof typeof en, string>
@@ -65,6 +70,7 @@ export const de = {
   'toggle.open': 'Seitenleiste öffnen',
   'toggle.collapse': 'Seitenleiste einklappen',
   'panels.label': 'Globale Bereiche',
+  'navigation.label': 'Navigation',
   'panels.more': 'Mehr',
   'version.copied': 'Version kopiert',
 } satisfies Record<keyof typeof en, string>
@@ -76,6 +82,7 @@ export const ru = {
   'toggle.open': 'Открыть боковую панель',
   'toggle.collapse': 'Свернуть боковую панель',
   'panels.label': 'Глобальные панели',
+  'navigation.label': 'Навигация',
   'panels.more': 'Ещё',
   'version.copied': 'Версия скопирована',
 } satisfies Record<keyof typeof en, string>
@@ -87,6 +94,7 @@ export const pt = {
   'toggle.open': 'Abrir barra lateral',
   'toggle.collapse': 'Recolher barra lateral',
   'panels.label': 'Painéis globais',
+  'navigation.label': 'Navegação',
   'panels.more': 'Mais',
   'version.copied': 'Versão copiada',
 } satisfies Record<keyof typeof en, string>
diff --git a/packages/client/ui-sidebar/tests/__snapshots__/sidebar-snapshot.client.spec.tsx.snap b/packages/client/ui-sidebar/tests/__snapshots__/sidebar-snapshot.client.spec.tsx.snap
index 433bcba048..7f6e1ba454 100644
--- a/packages/client/ui-sidebar/tests/__snapshots__/sidebar-snapshot.client.spec.tsx.snap
+++ b/packages/client/ui-sidebar/tests/__snapshots__/sidebar-snapshot.client.spec.tsx.snap
@@ -16,6 +16,7 @@ exports[`sidebar shell snapshots > renders Windows caption controls in expanded
       <button
         aria-label="Open sidebar"
         class="iconButton toggle"
+        data-sidebar-toggle="true"
         type="button"
       >
         <svg
@@ -158,6 +159,7 @@ exports[`sidebar shell snapshots > renders Windows caption controls in expanded
       <button
         aria-label="Collapse sidebar"
         class="iconButton toggle"
+        data-sidebar-toggle="true"
         type="button"
       >
         <svg
@@ -244,6 +246,7 @@ exports[`sidebar shell snapshots > renders the collapsed rail after the crossfad
       <button
         aria-label="Open sidebar"
         class="iconButton toggle"
+        data-sidebar-toggle="true"
         type="button"
       >
         <span
@@ -404,6 +407,7 @@ exports[`sidebar shell snapshots > renders the expanded column (wordmark, capsul
       <button
         aria-label="Collapse sidebar"
         class="iconButton toggle"
+        data-sidebar-toggle="true"
         type="button"
       >
         <svg
@@ -547,6 +551,7 @@ exports[`sidebar shell snapshots > renders the expanded column in the default lo
       <button
         aria-label="收起侧边栏"
         class="iconButton toggle"
+        data-sidebar-toggle="true"
         type="button"
       >
         <svg
diff --git a/packages/client/ui-sidebar/tests/apply.client.spec.tsx b/packages/client/ui-sidebar/tests/apply.client.spec.tsx
index 7f9b2884d5..bc74685410 100644
--- a/packages/client/ui-sidebar/tests/apply.client.spec.tsx
+++ b/packages/client/ui-sidebar/tests/apply.client.spec.tsx
@@ -22,7 +22,7 @@ afterEach(async () => {
 })
 
 function SidebarFrame({ renderSlot }: PropsRenderSlots<'sidebar'>) {
-  return renderSlot('sidebar', { collapsed: false, width: 300 })
+  return renderSlot('sidebar', { collapsed: false, width: 300, drawer: false })
 }
 
 async function bench(declare = true) {
diff --git a/packages/client/ui-sidebar/tests/panel-list.client.spec.tsx b/packages/client/ui-sidebar/tests/panel-list.client.spec.tsx
index 68e15ed3f5..6d3045ca09 100644
--- a/packages/client/ui-sidebar/tests/panel-list.client.spec.tsx
+++ b/packages/client/ui-sidebar/tests/panel-list.client.spec.tsx
@@ -71,7 +71,7 @@ async function bench(collapsed = false, track?: TrackProductEvent) {
     const activePanelId = usePanelInfo(info => info.activePanelId)
     return (
       <>
-        <aside>{renderSlot('sidebar', { collapsed, width: collapsed ? 56 : 300 })}</aside>
+        <aside>{renderSlot('sidebar', { collapsed, width: collapsed ? 56 : 300, drawer: false })}</aside>
         <main>{renderSlot('main', {}, { entryKey: activePanelId ?? 'conversation' })}</main>
       </>
     )
diff --git a/packages/client/ui-sidebar/tests/pointer-scrollbars.client.spec.tsx b/packages/client/ui-sidebar/tests/pointer-scrollbars.client.spec.tsx
index d3cd12ad32..6e15b94baa 100644
--- a/packages/client/ui-sidebar/tests/pointer-scrollbars.client.spec.tsx
+++ b/packages/client/ui-sidebar/tests/pointer-scrollbars.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * Pointer-revealed scrollbars, the shell's half: which class state the column
  * carries as the pointer crosses it. The stylesheet rule that state drives is
@@ -40,12 +41,13 @@ afterEach(() => {
 function mountColumn(): { column: HTMLElement; quiet: () => boolean } {
   const view = render(
     <SidebarRoot
+      drawer={false}
       collapsed={false} width={300}
       useSessions={neverHook} useSessionStatus={useSessionStatus} useSessionRetainInfo={neverHook}
       usePanelInfo={usePanelInfo} selectPanel={() => {}} usePanels={selector => selector([])} useEntryPins={selector => selector([])}
       useEntryActions={selector => selector(false)} setPinned={vi.fn()}
       useShortcuts={selector => selector([])}
-      useResource={useResource} useWorkspaces={neverHook}
+      useContextMenu={contextMenuHook()} useResource={useResource} useWorkspaces={neverHook}
       {...allowAllAccess}
       startSession={vi.fn()} toggleSidebar={vi.fn()} trackEntryClick={vi.fn()} t={t}
       renderSlot={((_key: string, owner: SidebarSectionOwnerProps) =>
diff --git a/packages/client/ui-sidebar/tests/sidebar-root.client.spec.tsx b/packages/client/ui-sidebar/tests/sidebar-root.client.spec.tsx
index 4dedd711db..ee09e12ce5 100644
--- a/packages/client/ui-sidebar/tests/sidebar-root.client.spec.tsx
+++ b/packages/client/ui-sidebar/tests/sidebar-root.client.spec.tsx
@@ -1,11 +1,13 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import type { ShortcutCatalogEntry, ShortcutCommandId } from '@deepseek-ai/dsh-client-shortcuts/client'
 import { afterEach, describe, expect, it, vi } from 'vitest'
-import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
-import { Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
+import { act, cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
+import { Menu, Modal, Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
 import { allowAllAccess, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import type { ReactNode } from 'react'
+import { useState } from 'react'
 import type {
   SidebarFooterActionOwnerProps, SidebarRootComponentProps, SidebarSectionOwnerProps,
   SidebarSettingsOwnerProps,
@@ -36,10 +38,24 @@ type AttentionSnapshot = Parameters<Parameters<SidebarRootComponentProps['useSes
 const noAttention: AttentionSnapshot = new Map()
 const useSessionStatus: SidebarRootComponentProps['useSessionStatus'] = selector => selector(noAttention)
 
-function mountShell({ collapsed = false, width = 300, shortcuts = [] }: {
+function makeHeaderProps(): HeaderLeadingControlsProps {
+  return {
+    useContextMenu: contextMenuHook(),
+    useSessions: neverHook, useSessionStatus, useSessionRetainInfo: neverHook,
+    usePanelInfo, useResource, useWorkspaces: neverHook, ...allowAllAccess,
+    usePanels: selector => selector([]), useShortcuts: selector => selector([]),
+    useEntryPins: selector => selector([]), useEntryActions: selector => selector(false),
+    selectPanel: vi.fn(), setPinned: vi.fn(), toggleSidebar: vi.fn(),
+    startSession: vi.fn(), trackEntryClick: vi.fn(), t,
+  }
+}
+
+function mountShell({ collapsed = false, width = 300, drawer = false, shortcuts = [], content }: {
   collapsed?: boolean
   width?: number
+  drawer?: boolean
   shortcuts?: readonly ShortcutCatalogEntry[]
+  content?: ReactNode
 } = {}) {
   const startSession = vi.fn()
   const toggleSidebar = vi.fn()
@@ -49,15 +65,16 @@ function mountShell({ collapsed = false, width = 300, shortcuts = [] }: {
   let footerActionOwner: SidebarFooterActionOwnerProps | undefined
   const brandMark = <span data-testid="custom-brand-mark">M</span>
   const brandName = <span data-testid="custom-brand-name">Custom Brand</span>
-  let current = { collapsed, width }
+  let current = { collapsed, width, drawer }
   const root = () => (
     <SidebarRoot
+      drawer={current.drawer}
       collapsed={current.collapsed} width={current.width}
       useSessions={neverHook} useSessionStatus={useSessionStatus} useSessionRetainInfo={neverHook}
       usePanelInfo={usePanelInfo} selectPanel={() => {}} usePanels={selector => selector([])} useEntryPins={selector => selector([])}
       useEntryActions={selector => selector(false)} setPinned={vi.fn()}
       useShortcuts={selector => selector(shortcuts)}
-      useResource={useResource} useWorkspaces={neverHook}
+      useContextMenu={contextMenuHook()} useResource={useResource} useWorkspaces={neverHook}
       {...allowAllAccess}
       startSession={startSession} toggleSidebar={toggleSidebar} trackEntryClick={trackEntryClick} t={t}
       renderSlot={((
@@ -76,7 +93,7 @@ function mountShell({ collapsed = false, width = 300, shortcuts = [] }: {
           return <div data-testid="footer-action-seat" data-wide={owner.wide} />
         }
         regionOwner = owner as SidebarSectionOwnerProps
-        return <div data-testid="region" data-wide={owner.wide} />
+        return <div data-testid="region" data-wide={owner.wide}>{content}</div>
       }) as SidebarRootComponentProps['renderSlot']}
     />
   )
@@ -118,13 +135,15 @@ describe('SidebarRoot shell', () => {
     expect(screen.queryByRole('tooltip')).toBeNull()
     expect(Array.from(expanded.querySelectorAll('kbd'), key => key.textContent)).toEqual(['Ctrl', 'N'])
     cleanup()
+    document.documentElement.dataset.platform = 'darwin'
     render(<HeaderLeadingControls toggleSidebar={vi.fn()} startSession={vi.fn()} selectPanel={vi.fn()} trackEntryClick={vi.fn()} t={t}
       usePanelInfo={neverHook} useSessions={neverHook} useSessionStatus={neverHook}
-      useSessionRetainInfo={neverHook} useResource={useResource} useWorkspaces={neverHook}
+      useSessionRetainInfo={neverHook} useContextMenu={contextMenuHook()} useResource={useResource} useWorkspaces={neverHook}
       {...allowAllAccess}
       usePanels={select => select([])} useEntryPins={select => select([])}
       useEntryActions={select => select(false)} setPinned={vi.fn()} useShortcuts={select => select([shortcut])} />)
     const button = screen.getByRole('button', { name: 'New session' })
+    expect(screen.getByRole('button', { name: 'Open sidebar' }).hasAttribute('data-sidebar-opener')).toBe(true)
     expect(button.getAttribute('aria-keyshortcuts')).toBe('Control+N')
     fireEvent.focus(button)
     expect(Array.from(screen.getByRole('tooltip').querySelectorAll('kbd'), key => key.textContent)).toEqual(['Ctrl', 'N'])
@@ -162,12 +181,12 @@ describe('SidebarRoot shell', () => {
     const startSession = vi.fn()
     const useRemoteAccess = vi.fn((action: string) => action !== 'session/create')
     render(<SidebarRoot
-      collapsed={false} width={300}
+      collapsed={false} width={300} drawer={false}
       useSessions={neverHook} useSessionStatus={useSessionStatus} useSessionRetainInfo={neverHook}
       usePanelInfo={usePanelInfo} selectPanel={() => {}} usePanels={selector => selector([])} useEntryPins={selector => selector([])}
       useEntryActions={selector => selector(false)} setPinned={vi.fn()}
       useShortcuts={selector => selector([])}
-      useResource={useResource} useWorkspaces={neverHook}
+      useContextMenu={contextMenuHook()} useResource={useResource} useWorkspaces={neverHook}
       {...allowAllAccess}
       useRemoteAccess={useRemoteAccess}
       startSession={startSession} toggleSidebar={toggleSidebar} trackEntryClick={vi.fn()} t={t}
@@ -193,12 +212,13 @@ describe('SidebarRoot shell', () => {
     vi.stubEnv('DSH_CLIENT_GIT_DIRTY', 'true')
     vi.stubEnv('DSH_CLIENT_VERSION', '1.2.3-rc.4')
     const { container } = render(<SidebarRoot
+      drawer={false}
       collapsed={false} width={300}
       useSessions={neverHook} useSessionStatus={useSessionStatus} useSessionRetainInfo={neverHook}
       usePanelInfo={usePanelInfo} selectPanel={() => {}} usePanels={selector => selector([])} useEntryPins={selector => selector([])}
       useEntryActions={selector => selector(false)} setPinned={vi.fn()}
       useShortcuts={selector => selector([])}
-      useResource={useResource} useWorkspaces={neverHook}
+      useContextMenu={contextMenuHook()} useResource={useResource} useWorkspaces={neverHook}
       {...allowAllAccess}
       startSession={vi.fn()} toggleSidebar={vi.fn()} trackEntryClick={vi.fn()} t={t}
       renderSlot={((_key: string, _owner: unknown, options?: { fallback?: ReactNode }) =>
@@ -216,12 +236,13 @@ describe('SidebarRoot shell', () => {
   ])('omits unavailable build-version suffixes from %j', (environment, expected) => {
     for (const [name, value] of Object.entries(environment)) vi.stubEnv(name, value)
     render(<SidebarRoot
+      drawer={false}
       collapsed={false} width={300}
       useSessions={neverHook} useSessionStatus={useSessionStatus} useSessionRetainInfo={neverHook}
       usePanelInfo={usePanelInfo} selectPanel={() => {}} usePanels={selector => selector([])} useEntryPins={selector => selector([])}
       useEntryActions={selector => selector(false)} setPinned={vi.fn()}
       useShortcuts={selector => selector([])}
-      useResource={useResource} useWorkspaces={neverHook}
+      useContextMenu={contextMenuHook()} useResource={useResource} useWorkspaces={neverHook}
       {...allowAllAccess}
       startSession={vi.fn()} toggleSidebar={vi.fn()} trackEntryClick={vi.fn()} t={t}
       renderSlot={((_key: string, _owner: unknown, options?: { fallback?: ReactNode }) =>
@@ -244,12 +265,12 @@ describe('SidebarRoot shell', () => {
     const startSession = vi.fn()
     const trackEntryClick = vi.fn<SidebarRootComponentProps['trackEntryClick']>()
     render(<SidebarRoot
-      collapsed={false} width={300}
+      collapsed={false} width={300} drawer={false}
       useSessions={neverHook} useSessionStatus={useSessionStatus} useSessionRetainInfo={neverHook}
       usePanelInfo={usePanelInfo} selectPanel={() => {}} usePanels={selector => selector([])} useEntryPins={selector => selector([])}
       useEntryActions={selector => selector(false)} setPinned={vi.fn()}
       useShortcuts={selector => selector([])}
-      useResource={useResource} useWorkspaces={neverHook}
+      useContextMenu={contextMenuHook()} useResource={useResource} useWorkspaces={neverHook}
       {...allowAllAccess}
       startSession={startSession} toggleSidebar={vi.fn()} trackEntryClick={trackEntryClick} t={t}
       renderSlot={((_key: string, _owner: unknown, options?: { fallback?: ReactNode }) =>
@@ -294,12 +315,13 @@ describe('SidebarRoot shell', () => {
 
   it('retains the local-build fallback without complete build metadata', () => {
     render(<SidebarRoot
+      drawer={false}
       collapsed={false} width={300}
       useSessions={neverHook} useSessionStatus={useSessionStatus} useSessionRetainInfo={neverHook}
       usePanelInfo={usePanelInfo} selectPanel={() => {}} usePanels={selector => selector([])} useEntryPins={selector => selector([])}
       useEntryActions={selector => selector(false)} setPinned={vi.fn()}
       useShortcuts={selector => selector([])}
-      useResource={useResource} useWorkspaces={neverHook}
+      useContextMenu={contextMenuHook()} useResource={useResource} useWorkspaces={neverHook}
       {...allowAllAccess}
       startSession={vi.fn()} toggleSidebar={vi.fn()} trackEntryClick={vi.fn()} t={t}
       renderSlot={((_key: string, _owner: unknown, options?: { fallback?: ReactNode }) =>
@@ -341,15 +363,29 @@ describe('SidebarRoot shell', () => {
     expect(screen.getByRole('button', { name: 'Open sidebar' })).toBeTruthy()
   })
 
+  it.each([false, true])('returns directly from a closed drawer to the compact layout (previously opened: %s)', (opened) => {
+    vi.useFakeTimers()
+    const b = mountShell({ drawer: true, collapsed: !opened, width: 280 })
+    if (opened) b.rerender({ collapsed: true })
+    b.rerender({ drawer: false, collapsed: true, width: 56 })
+    expect(b.regionOwner().wide).toBe(false)
+    expect(b.settingsOwner().wide).toBe(false)
+    expect(screen.getAllByRole('button', { name: 'New session' })).toHaveLength(1)
+    const root = screen.getByTestId('region').closest<HTMLElement>('[class*="root"]')!
+    expect(root.style.width).toBe('')
+    expect(root.className).not.toMatch(/fading|railIn/)
+  })
+
   it('shows only the badge bubble while the rail badge is hovered inside the toggle', () => {
     vi.useFakeTimers()
     render(<SidebarRoot
+      drawer={false}
       collapsed width={56}
       useSessions={neverHook} useSessionStatus={useSessionStatus} useSessionRetainInfo={neverHook}
       usePanelInfo={usePanelInfo} selectPanel={() => {}} usePanels={selector => selector([])} useEntryPins={selector => selector([])}
       useEntryActions={selector => selector(false)} setPinned={vi.fn()}
       useShortcuts={selector => selector([])}
-      useResource={useResource} useWorkspaces={neverHook}
+      useContextMenu={contextMenuHook()} useResource={useResource} useWorkspaces={neverHook}
       {...allowAllAccess}
       startSession={vi.fn()} toggleSidebar={vi.fn()} trackEntryClick={vi.fn()} t={t}
       renderSlot={((key: string) => key === 'sidebar.toggle.badge'
@@ -387,11 +423,14 @@ it('keeps the macOS sidebar toggle in its top strip', () => {
 })
 
 it('wires the shell.leading controls to the shared sidebar actions', () => {
+  document.documentElement.dataset.platform = 'darwin'
   const toggleSidebar = vi.fn()
   const startSession = vi.fn()
   const trackEntryClick = vi.fn<HeaderLeadingControlsProps['trackEntryClick']>()
   // This occupant only consumes its actions, the global access Hook, and locale, not Session hooks.
-  const props = { toggleSidebar, startSession, trackEntryClick, t, useRemoteAccess: allowAllAccess.useRemoteAccess, useShortcuts: select => select([{ id: 'sidebar.left.toggle' as ShortcutCommandId, label: 'Toggle sidebar', aliases: [], binding: null, modified: false, conflicts: [], issue: null, keys: ['⌘', 'B'], aria: 'Meta+B' }]) } as HeaderLeadingControlsProps
+  const props: HeaderLeadingControlsProps = { ...makeHeaderProps(), toggleSidebar, startSession, trackEntryClick,
+    useShortcuts: select => select([{ id: 'sidebar.left.toggle' as ShortcutCommandId, label: 'Toggle sidebar', aliases: [], binding: null, modified: false, conflicts: [], issue: null, keys: ['⌘', 'B'], aria: 'Meta+B' }]),
+  }
   render(<HeaderLeadingControls {...props} />)
   fireEvent.click(screen.getByRole('button', { name: en['toggle.open'] }))
   expect(toggleSidebar).toHaveBeenCalledOnce()
@@ -409,6 +448,14 @@ it('wires the shell.leading controls to the shared sidebar actions', () => {
   expect(screen.queryByRole('button', { name: en['session.new.label'] })).toBeNull()
 })
 
+it.each([undefined, 'darwin', 'win32'] as const)('shows the collapsed-header New Session control only on Desktop (%s)', (platform) => {
+  if (platform !== undefined) document.documentElement.dataset.platform = platform
+  const props = makeHeaderProps()
+  render(<HeaderLeadingControls {...props} />)
+  expect(screen.getByRole('button', { name: en['toggle.open'] })).toBeTruthy()
+  expect(screen.queryByRole('button', { name: en['session.new.label'] }) !== null).toBe(platform !== undefined)
+})
+
 describe('Windows caption New Session analytics', () => {
   afterEach(() => { document.documentElement.removeAttribute('data-windows-titlebar') })
 
@@ -477,3 +524,178 @@ it('uses the same effective sidebar binding for hover/focus hints and ARIA', ()
   fireEvent.focus(toggle)
   expect(Array.from(screen.getByRole('tooltip').querySelectorAll('kbd'), key => key.textContent)).toEqual(['⌘', 'B'])
 })
+
+it('retains drawer content through close and restores focus without entering an editor', () => {
+  const opener = document.createElement('button')
+  document.body.append(opener)
+  try {
+    opener.focus()
+    expect(document.activeElement).toBe(opener)
+    const h = mountShell({ drawer: true })
+    const dialog = screen.getByRole('dialog', { name: 'Navigation' })
+    expect(dialog.getAttribute('aria-modal')).toBe('true')
+    expect(dialog.getAttribute('data-shortcut-modal')).toBe('sidebar')
+    expect(document.activeElement).toBe(screen.getByRole('button', { name: 'Collapse sidebar' }))
+    expect(dialog.contains(document.activeElement)).toBe(true)
+    const region = screen.getByTestId('region')
+    fireEvent.keyDown(document.activeElement!, { key: 'Escape' })
+    expect(h.toggleSidebar).toHaveBeenCalledOnce()
+    h.rerender({ collapsed: true })
+    expect(dialog.hasAttribute('aria-modal')).toBe(false)
+    expect(document.activeElement).toBe(opener)
+    expect(screen.getByTestId('region')).toBe(region)
+    expect(h.regionOwner().wide).toBe(true)
+  } finally {
+    opener.remove()
+  }
+})
+
+it('moves focus into the drawer from a focused SVG element', () => {
+  const opener = document.createElementNS('http://www.w3.org/2000/svg', 'svg')
+  opener.setAttribute('tabindex', '0')
+  document.body.append(opener)
+  try {
+    opener.focus()
+    expect(document.activeElement).toBe(opener)
+    mountShell({ drawer: true })
+    expect(screen.getByRole('dialog', { name: 'Navigation' }).contains(document.activeElement)).toBe(true)
+  } finally {
+    opener.remove()
+  }
+})
+
+it('keeps focus in a foreground dialog when the drawer closes behind it', () => {
+  const opener = document.createElement('button')
+  document.body.append(opener)
+  try {
+    opener.focus()
+    const h = mountShell({ drawer: true })
+    render(<Modal open headless title="Settings" onClose={vi.fn()}><button>Settings control</button></Modal>)
+    const control = screen.getByRole('button', { name: 'Settings control' })
+    expect(document.activeElement).toBe(control)
+    h.rerender({ collapsed: true })
+    expect(document.activeElement).toBe(control)
+  } finally {
+    opener.remove()
+  }
+})
+
+it('moves focus to the rail toggle when the drawer opener unmounts', () => {
+  vi.useFakeTimers()
+  const opener = document.createElement('button')
+  document.body.append(opener)
+  try {
+    opener.focus()
+    const h = mountShell({ drawer: true })
+    const dialog = screen.getByRole('dialog', { name: 'Navigation' })
+    expect(dialog.contains(document.activeElement)).toBe(true)
+    opener.remove()
+    h.rerender({ drawer: false, collapsed: true, width: 56 })
+    act(() => { vi.advanceTimersByTime(150) })
+    expect(screen.getAllByRole('button', { name: 'New session' })).toHaveLength(1)
+    expect(document.activeElement).toBe(screen.getByRole('button', { name: 'Open sidebar' }))
+  } finally {
+    opener.remove()
+  }
+})
+
+it('moves focus from drawer search to the rail toggle before wide content unmounts', () => {
+  vi.useFakeTimers()
+  const h = mountShell({ drawer: true, content: <input aria-label="Search" /> })
+  screen.getByRole('textbox', { name: 'Search' }).focus()
+  h.rerender({ drawer: false, collapsed: true, width: 56 })
+  act(() => { vi.advanceTimersByTime(150) })
+  expect(document.activeElement).toBe(screen.getByRole('button', { name: 'Open sidebar' }))
+})
+
+it.each(['dialog', 'outside'] as const)('preserves %s focus when a drawer becomes a rail without its opener', (destination) => {
+  vi.useFakeTimers()
+  const opener = document.createElement('button')
+  const outside = document.createElement('button')
+  document.body.append(opener, outside)
+  try {
+    opener.focus()
+    const h = mountShell({ drawer: true })
+    let control: HTMLElement = outside
+    if (destination === 'dialog') {
+      render(<Modal open headless title="Settings" onClose={vi.fn()}><button>Settings control</button></Modal>)
+      control = screen.getByRole('button', { name: 'Settings control' })
+    } else {
+      outside.focus()
+    }
+    expect(document.activeElement).toBe(control)
+    opener.remove()
+    h.rerender({ drawer: false, collapsed: true, width: 56 })
+    act(() => { vi.advanceTimersByTime(150) })
+    expect(document.activeElement).toBe(control)
+  } finally {
+    opener.remove()
+    outside.remove()
+  }
+})
+
+it('closes a drawer opened from a focused SVG element', () => {
+  const opener = document.createElementNS('http://www.w3.org/2000/svg', 'svg')
+  opener.setAttribute('tabindex', '0')
+  document.body.append(opener)
+  try {
+    opener.focus()
+    expect(document.activeElement).toBe(opener)
+    const h = mountShell({ drawer: true })
+    const dialog = screen.getByRole('dialog', { name: 'Navigation' })
+    expect(dialog.contains(document.activeElement)).toBe(true)
+    h.rerender({ collapsed: true })
+    expect(dialog.hasAttribute('aria-modal')).toBe(false)
+  } finally {
+    opener.remove()
+  }
+})
+
+it.each(['menu', 'outside', 'dialog'] as const)('closes an obscured sidebar menu while preserving %s focus', async (destination) => {
+  function Content() {
+    const [open, setOpen] = useState(true)
+    return <><Menu open={open} onClose={() => { setOpen(false) }} portal
+      anchor={<button>View options</button>} items={[{ id: 'flat', label: 'Flat list' }]} />
+    {destination === 'dialog' && <Modal open title="Settings" closeLabel="Close" onClose={vi.fn()}><button>Settings control</button></Modal>}
+    </>
+  }
+  render(<><button data-sidebar-opener>Open navigation</button><button>Outside control</button></>)
+  const h = mountShell({ collapsed: true, width: 56, content: <Content /> })
+  let target: HTMLElement = screen.getByRole('menuitem')
+  if (destination === 'outside') target = screen.getByRole('button', { name: 'Outside control' })
+  if (destination === 'dialog') target = screen.getByRole('button', { name: 'Settings control' })
+  target.focus()
+  screen.getByTestId('region').setAttribute('inert', '')
+  h.rerender({ drawer: true })
+  await waitFor(() => { expect(screen.queryByRole('menuitem')).toBeNull() })
+  expect(document.activeElement).toBe(destination === 'menu'
+    ? screen.getByRole('button', { name: 'Open navigation' }) : target)
+})
+
+it.each(['menu', 'outside', 'dialog'] as const)('returns global context-menu focus on collapse while preserving %s focus', (destination) => {
+  render(<><button data-sidebar-opener>Open navigation</button><button>Outside control</button></>)
+  const h = mountShell({ content: <button aria-controls="session-menu">Session actions</button> })
+  screen.getByRole('button', { name: 'Session actions' }).focus()
+  render(<div role="menu" id="session-menu"><button role="menuitem">Copy</button></div>)
+  let target = screen.getByRole('menuitem')
+  if (destination === 'outside') target = screen.getByRole('button', { name: 'Outside control' })
+  if (destination === 'dialog') {
+    render(<Modal open title="Settings" closeLabel="Close" onClose={vi.fn()}><button>Settings control</button></Modal>)
+    target = screen.getByRole('button', { name: 'Settings control' })
+  }
+  target.focus()
+  h.rerender({ drawer: true, collapsed: true })
+  expect(document.activeElement).toBe(destination === 'menu'
+    ? screen.getByRole('button', { name: 'Open navigation' }) : target)
+})
+
+it.each([false, true])('moves hidden sidebar focus only to an available opener (%s)', (hasOpener) => {
+  render(<button data-sidebar-opener={hasOpener || undefined}>Open navigation</button>)
+  const h = mountShell({ collapsed: true, width: 56 })
+  const previous = screen.getByRole('button', { name: 'Open sidebar' })
+  previous.focus()
+  h.rerender({ drawer: true })
+  const expected = hasOpener ? screen.getByRole('button', { name: 'Open navigation' }) : previous
+  expect(document.activeElement).toBe(expected)
+  if (hasOpener) expect(expected.hasAttribute('data-dsh-automatic-focus')).toBe(true)
+})
diff --git a/packages/client/ui-sidebar/tests/sidebar-snapshot.client.spec.tsx b/packages/client/ui-sidebar/tests/sidebar-snapshot.client.spec.tsx
index 1b7ef3003e..dfa756943b 100644
--- a/packages/client/ui-sidebar/tests/sidebar-snapshot.client.spec.tsx
+++ b/packages/client/ui-sidebar/tests/sidebar-snapshot.client.spec.tsx
@@ -56,7 +56,7 @@ async function bench(options: { locale?: 'en' } = {}) {
 describe('sidebar shell snapshots', () => {
   it('renders the expanded column in the default locale (zh, no setLocale)', async () => {
     const { runtime } = await bench()
-    const slot = runtime.renderSlot('sidebar', { collapsed: false, width: 300 })
+    const slot = runtime.renderSlot('sidebar', { collapsed: false, width: 300, drawer: false })
     // Wordmark + capsule both start a session in the expanded state.
     expect(slot.view.getAllByRole('button', { name: '新建会话' })).toHaveLength(2)
     expect(slot.container).toMatchSnapshot()
@@ -65,7 +65,7 @@ describe('sidebar shell snapshots', () => {
 
   it('renders the expanded column (wordmark, capsule, empty holes)', async () => {
     const { runtime } = await bench({ locale: 'en' })
-    const slot = runtime.renderSlot('sidebar', { collapsed: false, width: 300 })
+    const slot = runtime.renderSlot('sidebar', { collapsed: false, width: 300, drawer: false })
     // Wordmark + capsule both start a session in the expanded state.
     expect(slot.view.getAllByRole('button', { name: 'New session' })).toHaveLength(2)
     expect(slot.container).toMatchSnapshot()
@@ -74,9 +74,9 @@ describe('sidebar shell snapshots', () => {
 
   it('renders the collapsed rail after the crossfade settles, in place', async () => {
     const { runtime } = await bench({ locale: 'en' })
-    const slot = runtime.renderSlot('sidebar', { collapsed: false, width: 300 })
+    const slot = runtime.renderSlot('sidebar', { collapsed: false, width: 300, drawer: false })
     const shell = slot.container.firstElementChild
-    slot.update({ collapsed: true, width: 56 })
+    slot.update({ collapsed: true, width: 56, drawer: false })
     // The wide content (wordmark shortcut) unmounts at the 150ms settle;
     // only the rail's capsule remains a New-session button.
     await waitFor(() => {
@@ -90,7 +90,7 @@ describe('sidebar shell snapshots', () => {
 
   it('a locale switch refreshes mounted copy without re-registration', async () => {
     const { runtime, locale } = await bench()
-    const slot = runtime.renderSlot('sidebar', { collapsed: false, width: 300 })
+    const slot = runtime.renderSlot('sidebar', { collapsed: false, width: 300, drawer: false })
     expect(slot.view.getAllByRole('button', { name: '新建会话' })).toHaveLength(2)
     // Same fiber, same registration: setLocale alone re-renders the outlet.
     act(() => { locale.setLocale('en') })
@@ -103,9 +103,9 @@ describe('sidebar shell snapshots', () => {
     document.documentElement.setAttribute('data-windows-titlebar', '')
     const { runtime } = await bench({ locale: 'en' })
     try {
-      const slot = runtime.renderSlot('sidebar', { collapsed: false, width: 300 })
+      const slot = runtime.renderSlot('sidebar', { collapsed: false, width: 300, drawer: false })
       expect(slot.container).toMatchSnapshot('windows expanded')
-      slot.update({ collapsed: true, width: 0 })
+      slot.update({ collapsed: true, width: 0, drawer: false })
       expect(slot.view.getAllByRole('button', { name: 'New session' })).toHaveLength(1)
       expect(slot.container).toMatchSnapshot('windows collapsed')
     } finally {
diff --git a/packages/client/ui-skill/package.json b/packages/client/ui-skill/package.json
index 6f7f7fad46..af569b897c 100644
--- a/packages/client/ui-skill/package.json
+++ b/packages/client/ui-skill/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-skill",
   "description": "Web skill references and the dedicated skill tool row",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-slots/package.json b/packages/client/ui-slots/package.json
index 0c4dfbc1ef..228703caf1 100644
--- a/packages/client/ui-slots/package.json
+++ b/packages/client/ui-slots/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-slots",
   "description": "Slot registry pure core: typed ordinary Slots and reusable Component Factories, derived props, Store seats, and renderer installation",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-subagent/package.json b/packages/client/ui-subagent/package.json
index ef3b94279a..93f40eef08 100644
--- a/packages/client/ui-subagent/package.json
+++ b/packages/client/ui-subagent/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-subagent",
   "description": "Subagent conversation catalog, continuation routing UI, and '@' reference source",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-subagent/tests/conversation-ui.client.spec.tsx b/packages/client/ui-subagent/tests/conversation-ui.client.spec.tsx
index 56e34dc371..3ac3a7b325 100644
--- a/packages/client/ui-subagent/tests/conversation-ui.client.spec.tsx
+++ b/packages/client/ui-subagent/tests/conversation-ui.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, fireEvent, render, screen, within } from '@testing-library/react'
 import { allowAllAccess, makeTranslate, RemoteError, sessionSnapshot } from '@deepseek-ai/dsh-client-test-runtime'
@@ -95,6 +96,7 @@ function props(
     useWorkspaces: unused,
     useResource: unused,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useProjection: unused,
     useConversation: unused,
     useInput: unused,
diff --git a/packages/client/ui-theme/README.i18n.yaml b/packages/client/ui-theme/README.i18n.yaml
index 2290e7fe26..3fb0fd59e0 100644
--- a/packages/client/ui-theme/README.i18n.yaml
+++ b/packages/client/ui-theme/README.i18n.yaml
@@ -33,8 +33,8 @@
   en: 3eb9b0e3365b2db3
   zh: c73acc55dd897266
 /deepseek-ai-dsh-client-ui-theme/understand-the-implementation/stylesheets:
-  en: 925119bd420325b4
-  zh: 384ef1f890b059da
+  en: 30227476ccabe895
+  zh: 08785d4340d8c797
 /deepseek-ai-dsh-client-ui-theme/understand-the-implementation/scrollbar-rebinding:
   en: bf76e7c34a331595
   zh: 5accd0260ef7c61e
diff --git a/packages/client/ui-theme/README.md b/packages/client/ui-theme/README.md
index c0c2916068..2eab7c3663 100644
--- a/packages/client/ui-theme/README.md
+++ b/packages/client/ui-theme/README.md
@@ -87,7 +87,7 @@ The `--dsw-alias-turn-trigger-*` tokens provide separate resting and hover backg
 
 `corner-shape.css` smooths every rounded corner: inside `@supports (corner-shape: superellipse(1.5))` it defines `--dsw-corner-shape` and applies it to all elements and their `::before`/`::after` through the universal selector, so engines without `corner-shape` keep circular corners. Full-round shapes — `border-radius: 50%` circles and pill radii — pair `corner-shape: round` with their radius in the owning component sheet because a superellipse deforms them; the corner-shape stylesheet spec enforces that pairing across every package stylesheet.
 
-`gradient-shadow-text.css` derives `--dsh-content-font-delta` from `--dsh-content-font-size` and shifts the Markdown heading and base-text ladder by that increment. It also derives the secondary tier `--dsh-content-font-size-secondary` (setting −1 at ≤14, setting −2 above; 13px at the default) with its own `--dsh-content-font-delta-secondary` for the table variants and the flow rows one step under the body. Dense small variants stay fixed. The code variants (`--dsw-font-markdown-code`, `-code-block`, `-code-block-small`) shift size and line height by `--dsh-code-font-delta`, the difference between `--dsh-code-font-size` and 11 px. Outside the ladder, the user bubble and composer draft read the body pair directly, and flow-row titles and summaries read the secondary pair. The sheet also owns the shadow scale (`--dsw-shadow-lv*`), the translucent-menu `--dsw-menu-backdrop-filter`, and the elevation tokens: `--dsw-elevation-stroke` draws a 0.5px hairline through the rebindable `--dsw-elevation-stroke-color`, and `--dsw-elevation-panel`/`--dsw-elevation-prominent`/`--dsw-elevation-soft` (the composer's larger-blur, lower-alpha tier) layer two faint soft shadows over that stroke, so elevated surfaces set `border: 0` and carry no layout-consuming outline; the derived tokens are re-declared per element so a surface's stroke-color rebind takes effect. An elevated surface that paints `--dsw-specific-menu` also applies `backdrop-filter: var(--dsw-menu-backdrop-filter)` ([styling reference](../../../docs/web-styling.md#component-rules)). Dark menus use a 45%-opaque gray fill and the `border-l3` stroke; light menus retain their `border-l1` stroke.
+`gradient-shadow-text.css` derives `--dsh-content-font-delta` from `--dsh-content-font-size` and shifts the Markdown heading and base-text ladder by that increment. It also derives the secondary tier `--dsh-content-font-size-secondary` (setting −1 at ≤14, setting −2 above; 13px at the default) with its own `--dsh-content-font-delta-secondary` for the table variants and the flow rows one step under the body. Dense small variants stay fixed. The code variants (`--dsw-font-markdown-code`, `-code-block`, `-code-block-small`) shift size and line height by `--dsh-code-font-delta`, the difference between `--dsh-code-font-size` and 11 px. Outside the ladder, the user bubble and composer draft read the body pair directly, and flow-row titles and summaries read the secondary pair. The sheet also owns the shadow scale (`--dsw-shadow-lv*`), the translucent-menu `--dsw-menu-backdrop-filter`, and the elevation tokens: `--dsw-elevation-stroke` draws a 0.5px hairline through the rebindable `--dsw-elevation-stroke-color`, and `--dsw-elevation-panel`/`--dsw-elevation-prominent`/`--dsw-elevation-soft` (the composer's larger-blur, lower-alpha tier) layer two faint soft shadows over that stroke, so elevated surfaces set `border: 0` and carry no layout-consuming outline; the derived tokens are re-declared per element so a surface's stroke-color rebind takes effect. An elevated surface that paints `--dsw-specific-menu` also applies `backdrop-filter: var(--dsw-menu-backdrop-filter)` ([styling reference](../../../docs/web-styling.md#component-rules)). Light menus use a 70%-opaque fill and dark menus use a 64%-opaque fill; dark menus use the `border-l3` stroke and light menus use `border-l1`.
 
 `brand-font.css` references the bundled `montserrat-regular.woff2` / `montserrat-light.woff2` / `montserrat-medium.woff2`, Montserrat Regular, Light, and Medium under the SIL Open Font License shipped with the stylesheet and WOFF2 under `lib/styles/`. `--dsw-font-family-brand` selects this face for brand text; ordinary UI keeps the system font stack. The source is Google Fonts' Montserrat distribution. The Web entry imports the package's `./brand-font.css` export so Vite emits and resolves the font asset; the Web build also includes its license. The Web application, including Desktop onboarding, loads the font offline. The native credential welcome retains its system font.
 
diff --git a/packages/client/ui-theme/README.zh.md b/packages/client/ui-theme/README.zh.md
index 0b63fb239f..5eb7b7bd3e 100644
--- a/packages/client/ui-theme/README.zh.md
+++ b/packages/client/ui-theme/README.zh.md
@@ -87,7 +87,7 @@ Desktop 的固定快捷键 `Cmd`/`Ctrl` + `+`（或 `=`）和 `Cmd`/`Ctrl` + `-`
 
 `corner-shape.css` 平滑所有圆角：在 `@supports (corner-shape: superellipse(1.5))` 内定义 `--dsw-corner-shape`，并通过通配选择器应用到所有元素及其 `::before`/`::after`，因此不支持 `corner-shape` 的引擎保持普通圆弧。正圆形状——`border-radius: 50%` 的圆与胶囊半径——因超级椭圆会使其变形，须在所属组件样式表中把 `corner-shape: round` 与半径声明配对；corner-shape 样式表 spec 跨全部包样式表强制这一配对。
 
-`gradient-shadow-text.css` 从 `--dsh-content-font-size` 派生 `--dsh-content-font-delta`，并以该增量移动 Markdown 标题与基础文本阶梯。它同时派生低一档变量 `--dsh-content-font-size-secondary`（设置 ≤14 时为设置值 −1，>14 时为设置值 −2；默认设置下为 13 px）及配套的 `--dsh-content-font-delta-secondary`，供表格变体与比正文低一档的流内行使用。紧凑的小号文本变体保持固定字号。代码变体（`--dsw-font-markdown-code`、`-code-block`、`-code-block-small`）按 `--dsh-code-font-delta`（`--dsh-code-font-size` 与 11 px 之差）调整字号与行高。阶梯之外，用户气泡与 composer 草稿直接读取正文字号变量对，流内行的标题及摘要读取低一档变量对。该表还持有阴影阶（`--dsw-shadow-lv*`）、半透明菜单使用的 `--dsw-menu-backdrop-filter` 与 elevation token：`--dsw-elevation-stroke` 经可重绑的 `--dsw-elevation-stroke-color` 画 0.5 px 发丝描边，`--dsw-elevation-panel`/`--dsw-elevation-prominent`/`--dsw-elevation-soft`（composer 专用的更大模糊、更低透明度档）在描边之上叠两层极淡柔光，因此高层级表面设 `border: 0`，不会产生占布局的轮廓；派生 token 逐元素重声明，使表面对描边色的重绑真实生效。绘制 `--dsw-specific-menu` 的高层级表面还会应用 `backdrop-filter: var(--dsw-menu-backdrop-filter)`（[样式参考](../../../docs/web-styling.zh.md#component-rules)）。 深色菜单使用不透明度为 45% 的灰色底与 `border-l3` 描边；浅色菜单保留 `border-l1` 描边。
+`gradient-shadow-text.css` 从 `--dsh-content-font-size` 派生 `--dsh-content-font-delta`，并以该增量移动 Markdown 标题与基础文本阶梯。它同时派生低一档变量 `--dsh-content-font-size-secondary`（设置 ≤14 时为设置值 −1，>14 时为设置值 −2；默认设置下为 13 px）及配套的 `--dsh-content-font-delta-secondary`，供表格变体与比正文低一档的流内行使用。紧凑的小号文本变体保持固定字号。代码变体（`--dsw-font-markdown-code`、`-code-block`、`-code-block-small`）按 `--dsh-code-font-delta`（`--dsh-code-font-size` 与 11 px 之差）调整字号与行高。阶梯之外，用户气泡与 composer 草稿直接读取正文字号变量对，流内行的标题及摘要读取低一档变量对。该表还持有阴影阶（`--dsw-shadow-lv*`）、半透明菜单使用的 `--dsw-menu-backdrop-filter` 与 elevation token：`--dsw-elevation-stroke` 经可重绑的 `--dsw-elevation-stroke-color` 画 0.5 px 发丝描边，`--dsw-elevation-panel`/`--dsw-elevation-prominent`/`--dsw-elevation-soft`（composer 专用的更大模糊、更低透明度档）在描边之上叠两层极淡柔光，因此高层级表面设 `border: 0`，不会产生占布局的轮廓；派生 token 逐元素重声明，使表面对描边色的重绑真实生效。绘制 `--dsw-specific-menu` 的高层级表面还会应用 `backdrop-filter: var(--dsw-menu-backdrop-filter)`（[样式参考](../../../docs/web-styling.zh.md#component-rules)）。 浅色菜单使用不透明度为 70% 的填充，深色菜单使用不透明度为 64% 的填充；深色菜单使用 `border-l3` 描边，浅色菜单使用 `border-l1` 描边。
 
 `brand-font.css` 引用随包提供的 `montserrat-regular.woff2` / `montserrat-light.woff2` / `montserrat-medium.woff2`，其中包含 Montserrat Regular、Light 和 Medium 字体，SIL Open Font License 与样式表和 WOFF2 一同随包保存在 `lib/styles/`。`--dsw-font-family-brand` 为品牌文字选择该字体，普通界面仍使用系统字体栈。源文件来自 Google Fonts 的 Montserrat 发布。Web 入口导入包的 `./brand-font.css` 导出，由 Vite 输出并解析字体资源，Web 构建也包含其许可。Web 应用（包括 Desktop 引导）可离线加载字体；原生凭证欢迎页保留系统字体。
 
diff --git a/packages/client/ui-theme/package.json b/packages/client/ui-theme/package.json
index dd0fd807da..053ecbaf7a 100644
--- a/packages/client/ui-theme/package.json
+++ b/packages/client/ui-theme/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-theme",
   "description": "Theme plugin: Host bootstrap for the pre-plugin palette; ThemeRuntime for light/dark/system state and icon replacements; --dsw-* token styles and Appearance settings row",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-theme/src/styles/design-platform.css b/packages/client/ui-theme/src/styles/design-platform.css
index a30485495f..6c53a267a7 100644
--- a/packages/client/ui-theme/src/styles/design-platform.css
+++ b/packages/client/ui-theme/src/styles/design-platform.css
@@ -285,7 +285,7 @@ body {
   --dsw-specific-bubble: var(--dsw-static-deepseek-50);
   --dsw-specific-input-major: var(--dsw-static-neutral-bluish-00);
   --dsw-specific-login-input: var(--dsw-static-neutral-bluish-50);
-  --dsw-menu-surface-fill: rgba(248, 249, 250, 0.58);
+  --dsw-menu-surface-fill: rgba(252, 253, 254, 0.7);
   --dsw-alias-menu-group-header-fill: rgba(248, 249, 250, 0.94);
   --dsw-specific-menu: var(--dsw-menu-surface-fill);
   --dsw-specific-selector: var(--dsw-static-neutral-bluish-60);
@@ -409,7 +409,7 @@ body[data-ds-dark-theme] {
   --dsw-specific-bubble: var(--dsw-static-neutral-bluish-850);
   --dsw-specific-input-major: var(--dsw-static-neutral-bluish-850);
   --dsw-specific-login-input: var(--dsw-static-neutral-bluish-900);
-  --dsw-menu-surface-fill: rgba(67, 69, 74, 0.45);
+  --dsw-menu-surface-fill: rgba(48, 49, 54, 0.64);
   --dsw-alias-menu-group-header-fill: rgba(48, 49, 54, 0.94);
   --dsw-specific-menu: var(--dsw-menu-surface-fill);
   --dsw-specific-selector: var(--dsw-static-neutral-bluish-800);
diff --git a/packages/client/ui-theme/tests/appearance-row.client.spec.tsx b/packages/client/ui-theme/tests/appearance-row.client.spec.tsx
index d7d2afa0d2..8f459cc39f 100644
--- a/packages/client/ui-theme/tests/appearance-row.client.spec.tsx
+++ b/packages/client/ui-theme/tests/appearance-row.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
@@ -51,6 +52,7 @@ function mount(preference: ThemePreference = 'system') {
     usePanelInfo, useSessionRetainInfo: () => undefined, useResource,
     useWorkspaces: emptyWorkspaces(),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useStore: bindSnapshotSelector(store),
     actions: store.actions,
     t: (key: string) => COPY[key] ?? key,
diff --git a/packages/client/ui-theme/tests/elevation-styles.client.spec.ts b/packages/client/ui-theme/tests/elevation-styles.client.spec.ts
index a66f9b823f..6c73fe32cc 100644
--- a/packages/client/ui-theme/tests/elevation-styles.client.spec.ts
+++ b/packages/client/ui-theme/tests/elevation-styles.client.spec.ts
@@ -64,8 +64,8 @@ describe('elevation tokens', () => {
       .filter(rule => rule.selectors.includes(selector))
       .flatMap(rule => rule.declarations)
       .findLast(([property]) => property === token)?.[1]
-    expect(value('body')).toBe('rgba(248, 249, 250, 0.58)')
-    expect(value('body[data-ds-dark-theme]')).toBe('rgba(67, 69, 74, 0.45)')
+    expect(value('body')).toBe('rgba(252, 253, 254, 0.7)')
+    expect(value('body[data-ds-dark-theme]')).toBe('rgba(48, 49, 54, 0.64)')
     expect(value('body', '--dsw-specific-menu')).toBe('var(--dsw-menu-surface-fill)')
     expect(value("html[data-platform='darwin'] body", '--dsw-specific-menu')).toBe('rgba(248, 249, 250, 0.94)')
     expect(value("html[data-platform='darwin'] body[data-ds-dark-theme]", '--dsw-specific-menu')).toBe('rgba(48, 49, 54, 0.94)')
diff --git a/packages/client/ui-theme/tests/font-family-row.client.spec.tsx b/packages/client/ui-theme/tests/font-family-row.client.spec.tsx
index a2ca325a7e..e9b7c5173b 100644
--- a/packages/client/ui-theme/tests/font-family-row.client.spec.tsx
+++ b/packages/client/ui-theme/tests/font-family-row.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /** FontFamilyRow behavior: the field shows the persisted list, blur and Enter
  * commit the normalized input, and the field follows store changes. Also
  * covers the font-list normalization it relies on. */
@@ -53,6 +54,7 @@ function mount(kind: FontRole = 'code', code = '') {
     usePanelInfo, useSessionRetainInfo: () => undefined, useResource,
     useWorkspaces: emptyWorkspaces(),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useStore: bindSnapshotSelector(store),
     actions: store.actions,
     t: (key: string) => COPY[key] ?? key,
diff --git a/packages/client/ui-theme/tests/font-settings-group.client.spec.tsx b/packages/client/ui-theme/tests/font-settings-group.client.spec.tsx
index 947c099e20..2c4a0c4069 100644
--- a/packages/client/ui-theme/tests/font-settings-group.client.spec.tsx
+++ b/packages/client/ui-theme/tests/font-settings-group.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /** FontSettingsGroup behavior: the text font-size row shows collapsed, its
  * disclosure button toggles the font and size rows, and each row routes its
  * write to its own role. */
@@ -56,6 +57,7 @@ function mount() {
     usePanelInfo, useSessionRetainInfo: () => undefined, useResource,
     useWorkspaces: emptyWorkspaces(),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useStore: bindSnapshotSelector(store),
     actions: store.actions,
     t: (key: string) => COPY[key] ?? key,
diff --git a/packages/client/ui-theme/tests/font-size-row.client.spec.tsx b/packages/client/ui-theme/tests/font-size-row.client.spec.tsx
index 35b67f6205..a2f5f4e203 100644
--- a/packages/client/ui-theme/tests/font-size-row.client.spec.tsx
+++ b/packages/client/ui-theme/tests/font-size-row.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /** FontSizeRow behavior: value display, arrow clicks drive setFontSize,
  * bound-value arrows disable, display follows the store mirror. */
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
@@ -56,6 +57,7 @@ function mount(fontSize = 14, role: FontRole = 'text') {
     usePanelInfo, useSessionRetainInfo: () => undefined, useResource,
     useWorkspaces: emptyWorkspaces(),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useStore: bindSnapshotSelector(store),
     actions: store.actions,
     t: (key: string) => COPY[key] ?? key,
diff --git a/packages/client/ui-tool/README.i18n.yaml b/packages/client/ui-tool/README.i18n.yaml
index 5e2e05cf28..2e30e2a80b 100644
--- a/packages/client/ui-tool/README.i18n.yaml
+++ b/packages/client/ui-tool/README.i18n.yaml
@@ -15,14 +15,14 @@
   en: d152484eb41ac6b4
   zh: 09388d293f9be9cb
 /deepseek-ai-dsh-client-ui-tool/use-this-package:
-  en: c6d4e666191521b2
-  zh: 2498020e7080e172
+  en: b19a0582b9fe78a8
+  zh: 18109a11847c6f55
 /deepseek-ai-dsh-client-ui-tool/use-this-package/registering-a-business-tool-view:
   en: e458aff61e634190
   zh: 650e417f450b3edf
 /deepseek-ai-dsh-client-ui-tool/use-this-package/built-in-views:
-  en: 3643ffbb8cf80e4c
-  zh: b49654dc3b94b2be
+  en: 4b32498f182a84cc
+  zh: 1daa6a15d8df961b
 /deepseek-ai-dsh-client-ui-tool/understand-the-implementation:
   en: 00bc7b0c84edc603
   zh: 1cfcf5b435248a91
diff --git a/packages/client/ui-tool/README.md b/packages/client/ui-tool/README.md
index 3854a5a92a..cdd926c517 100644
--- a/packages/client/ui-tool/README.md
+++ b/packages/client/ui-tool/README.md
@@ -31,6 +31,8 @@ Settled foreground commands with a nonzero exit code, a terminating signal, or a
 
 Before dispatch, a named model call appears as one non-expandable row with its tool-owned icon and title. A generic row shows `Tool call · <tool name>`. Read/write/edit show an openable path once `file_path` closes and decodes without errors; write/edit show `NKB` after that path once content arrives, retaining it during execution and after success, before any diff totals. N rounds the decoded input's UTF-16 length up in units of 1024, summing old and new text for edit; it is not file bytes. Error and stopped rows omit the size and diff totals. Command rows show the streamed description. `tool/call` enables the existing call presentation; completing an argument block alone does not start execution.
 
+File and URL toolview Slots obtain `useContextMenu` directly and supply bound `fileContextMenuProps` or `urlContextMenuProps` to `ToolRow`. File registrations inject a gesture-time path resolver for the originating Session’s working directory, falling back to its workspace root. `ToolCallTree` supplies an explicit file adapter to its plain `GenericToolCard` fallback, including nested calls. No Markdown provider is required. Mouse and keyboard gestures retain the captured path, line, URL, and Session without expanding the row or opening the file.
+
 ### Registering a business tool view
 
 An owning business package registers its wire Tool name into `tool.call.toolview`:
@@ -57,6 +59,8 @@ Question rows pair answers with questions by id, using the tool result or the `u
 
 Answer-panel buttons belong to the question renderer. It composes `DisclosureRow` with its own action and transcript; generic `ToolRow` does not select or dispatch question actions.
 
+File and URL controls declare context-menu targets through the scoped Markdown delegate. File targets carry their recorded path and line for both pointer and keyboard gestures.
+
 -----
 
 <a id="understand-the-implementation"></a>
diff --git a/packages/client/ui-tool/README.zh.md b/packages/client/ui-tool/README.zh.md
index 822caa6bee..b77424f30c 100644
--- a/packages/client/ui-tool/README.zh.md
+++ b/packages/client/ui-tool/README.zh.md
@@ -31,6 +31,8 @@ kind: "package-reference"
 
 派发前，模型已给出名称的调用显示为不可展开的一行，使用工具自己的图标与标题。通用行显示为 `工具调用 · <工具名>`。read/write/edit 在 `file_path` 闭合且解码无误后显示可打开的路径；write/edit 从内容到达起在该路径后显示 `NKB`，执行中和成功后仍保留，位于差异统计之前。N 按解码后输入的 UTF-16 长度除以 1024 向上取整，edit 合计新旧文本长度；它不是文件字节数。失败和停止的行省略大小与差异统计。命令行显示流入中的描述。`tool/call` 才启用既有调用展示；参数块结束本身不代表开始执行。
 
+文件和 URL 工具视图 Slot 直接获取 `useContextMenu`，向 `ToolRow` 提供已绑定的 `fileContextMenuProps` 或 `urlContextMenuProps`。文件注册注入在触发时读取原始 Session 工作目录的路径解析器，工作目录缺失时使用工作区根目录。`ToolCallTree` 向普通 `GenericToolCard` fallback 显式提供文件适配函数，包含嵌套调用。无需 Markdown Provider。鼠标和键盘手势保留捕获的路径、行号、URL 与 Session，不会展开工具行或打开文件。
+
 ### 注册业务工具视图
 
 拥有该视图的业务包将其 wire 工具名称注册进 `tool.call.toolview`：
@@ -57,6 +59,8 @@ owner 载荷为 `ToolCallOwnerProps`：`callId`、`toolName`、`phase` 判别字
 
 回答面板按钮归问题 renderer 所有。它使用 `DisclosureRow` 组合自己的操作与 transcript；通用 `ToolRow` 不选择或派发问题操作。
 
+文件与 URL 控件通过作用域内的 Markdown 委托声明右键菜单目标。鼠标和键盘手势的文件目标都携带记录的路径与行号。
+
 -----
 
 <a id="understand-the-implementation"></a>
diff --git a/packages/client/ui-tool/package.json b/packages/client/ui-tool/package.json
index c318859c9b..31d7cdca6d 100644
--- a/packages/client/ui-tool/package.json
+++ b/packages/client/ui-tool/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-tool",
   "description": "Client Tool call-tree renderer and keyed per-tool presentation slot",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -32,7 +32,8 @@
         "@deepseek-ai/dsh-api-workspace-controller",
         "@deepseek-ai/dsh-client-connection",
         "@deepseek-ai/dsh-client-locale",
-        "@deepseek-ai/dsh-client-ui-conversation"
+        "@deepseek-ai/dsh-client-ui-conversation",
+        "@deepseek-ai/dsh-api-session-controller"
       ],
       "platform": "web"
     }
@@ -80,7 +81,9 @@
     "clsx": "^2.0.0",
     "@deepseek-ai/dsh-ptc-runtime": "workspace:*",
     "@deepseek-ai/dsh-token-meter": "workspace:*",
-    "@deepseek-ai/dsh-user-questions": "workspace:*"
+    "@deepseek-ai/dsh-user-questions": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*",
+    "@deepseek-ai/dsh-api-session-controller": "workspace:*"
   },
   "files": [
     "locale/*.json",
diff --git a/packages/client/ui-tool/src/client/apply.ts b/packages/client/ui-tool/src/client/apply.ts
index e6a866d1b2..41cc937878 100644
--- a/packages/client/ui-tool/src/client/apply.ts
+++ b/packages/client/ui-tool/src/client/apply.ts
@@ -6,6 +6,7 @@ import type {} from '@deepseek-ai/dsh-api-remotes/client'
 import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
 import type {} from '@deepseek-ai/dsh-client-ui-renderer/client'
 import type {} from '@deepseek-ai/dsh-client-ui-session/client'
+import { toolFileInject } from './tool/file-menu.ts'
 import { ToolCallTree } from './tool/ToolCallTree.tsx'
 import { CONVERSATION_NS as NS } from './locale.ts'
 import { askQuestionToolview } from './tool/toolviews/ask-question-row.tsx'
@@ -18,8 +19,8 @@ import { detailsToolview } from './tool/toolviews/details-row.tsx'
 import { todoToolview } from './tool/toolviews/todo-row.tsx'
 import { webToolview } from './tool/toolviews/web-row.tsx'
 
-/** Required services: the slot registry and the Remote face carrying the Host home used for POSIX `~`. */
-export const inject = ['slots', 'remote']
+/** Required services: Slots, live Session paths, and the Remote face carrying the Host home used for POSIX `~`. */
+export const inject = ['slots', 'remote', 'sessions']
 
 /**
  * Mount the whole-Tool renderers and built-in atomic Tool registrations.
@@ -30,7 +31,8 @@ export function apply(ctx: ClientContext): void {
     getSnapshot: () => ctx.remote.$host,
     subscribe: listener => ctx.on('connection/reset', listener),
   }
-  const toolInject = () => ({ hooks: { hostInfo } })
+  const fileInject = toolFileInject(ctx)
+  const toolInject = (sessionId: Parameters<typeof fileInject>[0]) => ({ ...fileInject(sessionId), hooks: { hostInfo } })
   ctx.slots.inject('conversation.chat.node', () => ctx.slots.register({
     name: 'conversation.chat.node',
     key: 'tool-call',
diff --git a/packages/client/ui-tool/src/client/contract/slots.ts b/packages/client/ui-tool/src/client/contract/slots.ts
index 9b16052b89..d3f45dc789 100644
--- a/packages/client/ui-tool/src/client/contract/slots.ts
+++ b/packages/client/ui-tool/src/client/contract/slots.ts
@@ -10,18 +10,15 @@ import type {
 import type { MessageImageLoader, MessageImageSource } from '@deepseek-ai/dsh-client-ui-conversation/client'
 import type { AskUserQuestionAnswerItem, AskUserQuestionItem } from '@deepseek-ai/dsh-user-questions/types'
 import type {} from '@deepseek-ai/dsh-client-locale/client'
+import type { ToolFileInjected } from '../tool/file-menu.ts'
 
 declare module '@deepseek-ai/dsh-client-ui-slots' {
   interface SlotMap {
     /**
-     * Keyed Tool call view dispatched by wire Tool name. Any name is allowed,
-     * including tools registered by your package. Register with
-     * `key: '<tool name>'`; a typo never renders.
-     *
-     * Registering an occupied key replaces its view; unclaimed keys use the
-     * generic row. The owner supplies the call identity and running
-     * or settled node through explicit phase props. Every stage supplies
-     * `name` and a lazy `args` view; preparing arguments may be incomplete.
+     * Keyed Tool view dispatched by wire name, including custom tools.
+     * Register with `key: '<tool name>'`; a typo never renders.
+     * Occupied keys replace the view; unclaimed keys use the generic row. Owner
+     * phase data includes `name` and lazy `args`; preparing arguments may be incomplete.
      */
     'tool.call.toolview': {
       kind: 'keyed'
@@ -154,4 +151,4 @@ export type ToolHostInfoInjected = {
 export type ToolTreeProps = PropsRuntime<'conversation.chat.node', 'tool-call'>
   & PropsRenderSlots<'tool.call.toolview'>
   & PropsLocale<'conversation'>
-  & InjectFace<ToolHostInfoInjected>
+  & InjectFace<ToolHostInfoInjected & ToolFileInjected>
diff --git a/packages/client/ui-tool/src/client/tool/ToolCallTree.tsx b/packages/client/ui-tool/src/client/tool/ToolCallTree.tsx
index d6419aa205..9355ddac42 100644
--- a/packages/client/ui-tool/src/client/tool/ToolCallTree.tsx
+++ b/packages/client/ui-tool/src/client/tool/ToolCallTree.tsx
@@ -1,5 +1,5 @@
 /** Root/subcall Tool composition with one keyed atomic dispatch path. */
-import { memo, useMemo, type ReactNode } from 'react'
+import { memo, useCallback, useMemo, type ReactNode } from 'react'
 import type { ToolCallBlock } from '@deepseek-ai/dsh-client-ui-chat/client'
 import type { ToolCallOwnerProps, ToolCallPhaseProps, ToolTreeProps } from '../contract/slots.ts'
 import { toolRowModel } from './models/tool-call-model.ts'
@@ -18,8 +18,9 @@ function callName(call: ToolCallPhaseProps): string {
 
 /** One atomic call dispatched through the Tool-owned keyed slot. */
 const ToolCall = memo(function ToolCall({
-  renderSlot, callId, toolName, call, openFile, cwd, home, inspectCall, loadImage, useDisclosure, t, children,
-}: Pick<ToolTreeProps, 'renderSlot' | 'openFile' | 'cwd' | 'inspectCall' | 'loadImage' | 'useDisclosure' | 't'> & {
+  renderSlot, callId, toolName, call, openFile, renderFallback, cwd, home, inspectCall, loadImage, useDisclosure, children,
+}: Pick<ToolTreeProps, 'renderSlot' | 'openFile' | 'cwd' | 'inspectCall' | 'loadImage' | 'useDisclosure'> & {
+  renderFallback: (owner: ToolCallOwnerProps) => ReactNode
   callId: string
   toolName: string
   call: ToolCallPhaseProps
@@ -48,10 +49,10 @@ const ToolCall = memo(function ToolCall({
       data-chat-call-id={callId}
     >
       {autoReviewDenied
-        ? <GenericToolCard {...owner} t={t} />
+        ? renderFallback(owner)
         : renderSlot('tool.call.toolview', owner, {
           entryKey: toolName,
-          fallback: <GenericToolCard {...owner} t={t} />,
+          fallback: renderFallback(owner),
         })}
       {children}
     </div>
@@ -59,8 +60,9 @@ const ToolCall = memo(function ToolCall({
 })
 
 const ToolCallBranch = memo(function ToolCallBranch({
-  renderSlot, block, cwd, home, openFile, inspectCall, loadImage, useDisclosure, t,
-}: Pick<ToolTreeProps, 'renderSlot' | 'cwd' | 'openFile' | 'inspectCall' | 'loadImage' | 'useDisclosure' | 't'> & {
+  renderSlot, block, cwd, home, openFile, renderFallback, inspectCall, loadImage, useDisclosure,
+}: Pick<ToolTreeProps, 'renderSlot' | 'cwd' | 'openFile' | 'inspectCall' | 'loadImage' | 'useDisclosure'> & {
+  renderFallback: (owner: ToolCallOwnerProps) => ReactNode
   block: ToolCallBlock
   home?: string | undefined
 }) {
@@ -72,12 +74,12 @@ const ToolCallBranch = memo(function ToolCallBranch({
       toolName={callName(call)}
       call={call}
       openFile={openFile}
+      renderFallback={renderFallback}
       cwd={cwd}
       home={home}
       inspectCall={inspectCall}
       useDisclosure={useDisclosure}
       loadImage={loadImage}
-      t={t}
     >
       {call.phase !== 'preparing' && call.block.subCalls.length > 0 ? (
         <div className={css.subCalls} data-subcalls>
@@ -89,10 +91,10 @@ const ToolCallBranch = memo(function ToolCallBranch({
               cwd={cwd}
               home={home}
               openFile={openFile}
+              renderFallback={renderFallback}
               inspectCall={inspectCall}
               useDisclosure={useDisclosure}
               loadImage={loadImage}
-              t={t}
             />
           ))}
         </div>
@@ -108,8 +110,14 @@ const ToolCallBranch = memo(function ToolCallBranch({
  * @returns the Tool call tree.
  */
 export function ToolCallTree({
-  renderSlot, node, cwd, openFile, inspectCall, loadImage, useDisclosure, useHostInfo, t,
+  renderSlot, node, cwd, openFile, inspectCall, loadImage, useDisclosure, useHostInfo, t, useContextMenu, sessionId, resolveFilePath,
 }: ToolTreeProps) {
+  const { getTriggerProps } = useContextMenu()
+  const getFileTriggerProps = useCallback((path: string) => getTriggerProps(() => ({
+    kind: 'file', value: { sessionId, path: resolveFilePath(path) },
+  })), [getTriggerProps, sessionId, resolveFilePath])
+  const renderFallback = useCallback((owner: ToolCallOwnerProps) =>
+    <GenericToolCard {...owner} t={t} getFileTriggerProps={getFileTriggerProps} />, [t, getFileTriggerProps])
   const home = useHostInfo(info => info.home)
   return (
     <ToolCallBranch
@@ -118,10 +126,10 @@ export function ToolCallTree({
       cwd={cwd}
       home={home}
       openFile={openFile}
+      renderFallback={renderFallback}
       inspectCall={inspectCall}
       useDisclosure={useDisclosure}
       loadImage={loadImage}
-      t={t}
     />
   )
 }
diff --git a/packages/client/ui-tool/src/client/tool/components/ToolRow.tsx b/packages/client/ui-tool/src/client/tool/components/ToolRow.tsx
index fb1a92af5f..77c9659bd5 100644
--- a/packages/client/ui-tool/src/client/tool/components/ToolRow.tsx
+++ b/packages/client/ui-tool/src/client/tool/components/ToolRow.tsx
@@ -5,6 +5,7 @@ import {
   TerminalBlock, TextShimmer, WebBlock,
   diffTotals,
 } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { ContextMenuTriggerProps } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import type { PropsRenderSlots, TranslateNS } from '@deepseek-ai/dsh-client-ui-slots'
 import type { OpenFileOptions, UseDisclosure } from '@deepseek-ai/dsh-client-ui-chat/client'
 import type { MessageImageLoader } from '@deepseek-ai/dsh-client-ui-conversation/client'
@@ -90,6 +91,10 @@ export interface ToolRowProps {
   filePathLine?: number | undefined
   /** Open the path (already cwd-resolved), landing on `filePathLine` when given. */
   onOpenFile?: ((path: string, options?: OpenFileOptions) => void) | undefined
+  /** File gesture bindings supplied by the owning tool view. */
+  fileContextMenuProps?: ContextMenuTriggerProps | undefined
+  /** URL gesture bindings supplied by the owning tool view. */
+  urlContextMenuProps?: ContextMenuTriggerProps | undefined
   /** Safe http(s) URL from tool args; when set, the summary renders as a link that opens it in a new tab. */
   href?: string | undefined
   /**
@@ -146,6 +151,7 @@ export const ToolRow = memo(function ToolRow({
   filePath,
   filePathLine,
   onOpenFile,
+  fileContextMenuProps, urlContextMenuProps,
   href,
   inspect,
   useDisclosure,
@@ -217,8 +223,12 @@ export const ToolRow = memo(function ToolRow({
         <button
           type="button"
           className={css.fileLink}
+          {...fileContextMenuProps}
           onClick={openFile}
-          onKeyDown={summaryLinkKeyDown}
+          onKeyDown={(event) => {
+            summaryLinkKeyDown(event)
+            fileContextMenuProps?.onKeyDown?.(event)
+          }}
         >
           <TextShimmer>{summaryText}</TextShimmer>
         </button>
@@ -226,10 +236,14 @@ export const ToolRow = memo(function ToolRow({
         <a
           className={css.fileLink}
           href={linkHref}
+          {...urlContextMenuProps}
           target="_blank"
           rel="noopener noreferrer"
           onClick={stopLinkClick}
-          onKeyDown={summaryLinkKeyDown}
+          onKeyDown={(event) => {
+            summaryLinkKeyDown(event)
+            urlContextMenuProps?.onKeyDown?.(event)
+          }}
         >
           <TextShimmer>{summaryText}</TextShimmer>
         </a>
@@ -254,7 +268,7 @@ export const ToolRow = memo(function ToolRow({
         </TextShimmer>
       )}
     </>
-  ), [summaryLinkKeyDown, linkHref, openFile, state, suffix, totals, summaryText, exitLabel])
+  ), [summaryLinkKeyDown, fileContextMenuProps, urlContextMenuProps, linkHref, openFile, state, suffix, totals, summaryText, exitLabel])
   const expandedContent = useMemo(() => open ? (
     <div className={clsx(css.bodyWrap, detailsBody !== null && css.detailsBodyWrap)}>
       {askQuestionBody !== null
diff --git a/packages/client/ui-tool/src/client/tool/file-menu.ts b/packages/client/ui-tool/src/client/tool/file-menu.ts
new file mode 100644
index 0000000000..0b0e5377fd
--- /dev/null
+++ b/packages/client/ui-tool/src/client/tool/file-menu.ts
@@ -0,0 +1,26 @@
+/** Tool-owned path resolution supplied by the existing toolview registration. */
+import type { Context } from '@deepseek-ai/cordis'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type {} from '@deepseek-ai/dsh-api-session-controller/client'
+import { resolveWorkspacePath } from '@deepseek-ai/dsh-util-workspace-path'
+
+/** File paths are resolved when a gesture begins, not when the Slot is mounted. */
+export interface ToolFileInjected {
+  /** Resolve an argument from the live Session directory. @param path - Recorded path. @returns Host path. */
+  resolveFilePath: (path: string) => string
+}
+
+/**
+ * Bind a toolview's path reader to its originating Session.
+ * @param ctx - Tool plugin context.
+ * @returns Existing Slot registration's inject callback.
+ */
+export function toolFileInject(ctx: Context): (sessionId: SessionId) => ToolFileInjected {
+  return sessionId => ({
+    resolveFilePath: (path) => {
+      const cwd = ctx.sessions.list.getSnapshot().byId[sessionId]?.cwd
+      const current = ctx.sessions.binding(sessionId)?.session.projections.faceOf('workingDirectory').getSnapshot() as string | null | undefined
+      return resolveWorkspacePath(current ?? cwd, path)
+    },
+  })
+}
diff --git a/packages/client/ui-tool/src/client/tool/toolviews/GenericToolCard.tsx b/packages/client/ui-tool/src/client/tool/toolviews/GenericToolCard.tsx
index bc0faacb13..6ce48b990f 100644
--- a/packages/client/ui-tool/src/client/tool/toolviews/GenericToolCard.tsx
+++ b/packages/client/ui-tool/src/client/tool/toolviews/GenericToolCard.tsx
@@ -1,3 +1,4 @@
+import type { ContextMenuTriggerProps } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import type { ReactNode } from 'react'
 import {
   IconApiOutlineRegular, IconBrowseOutlineRegular, IconCodeOutlineRegular, IconEditOutlineRegular, IconSearchOutlineRegular,
@@ -27,10 +28,14 @@ const VARIANT_ICONS: Record<ToolRowVariant, ReactNode> = {
 /** Card props: the owner payload plus the render site's locale seat (plain prop). */
 export type GenericToolCardProps = ToolCallOwnerProps & {
   t: ToolTreeProps['t']
+  /** Bind the recorded file to the original Session. */
+  getFileTriggerProps: (path: string) => ContextMenuTriggerProps
 }
 
 /** @param props - current tool stage and locale. @returns its preparation or dispatched card. */
-export function GenericToolCard({ toolName, block, cwd, home, openFile, inspect, useDisclosure, t }: GenericToolCardProps) {
+export function GenericToolCard({
+  toolName, block, cwd, home, openFile, getFileTriggerProps, inspect, useDisclosure, t,
+}: GenericToolCardProps) {
   const model = toolRowModel(toolName, block, cwd, home)
   const autoReview = model.autoReviewDenial === null
     ? null
@@ -48,6 +53,7 @@ export function GenericToolCard({ toolName, block, cwd, home, openFile, inspect,
   const singleFile = model.filePath !== undefined
   return (
     <ToolRow
+      fileContextMenuProps={model.filePath === undefined ? undefined : getFileTriggerProps(model.filePath)}
       useDisclosure={useDisclosure}
       t={t}
       variant={model.variant}
diff --git a/packages/client/ui-tool/src/client/tool/toolviews/file-mutation-row.tsx b/packages/client/ui-tool/src/client/tool/toolviews/file-mutation-row.tsx
index d2071fbc62..c92df63c96 100644
--- a/packages/client/ui-tool/src/client/tool/toolviews/file-mutation-row.tsx
+++ b/packages/client/ui-tool/src/client/tool/toolviews/file-mutation-row.tsx
@@ -1,3 +1,4 @@
+import { toolFileInject, type ToolFileInjected } from '../file-menu.ts'
 import type { Context } from '@deepseek-ai/cordis'
 import { IconEditOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
@@ -7,7 +8,7 @@ import { toolRowModel } from '../models/tool-call-model.ts'
 import { ToolRow } from '../components/ToolRow.tsx'
 import { CONVERSATION_NS as NS } from '../../locale.ts'
 
-type FileMutationRowProps = ToolCallViewProps & PropsLocale<'conversation'>
+type FileMutationRowProps = ToolCallViewProps & ToolFileInjected & PropsLocale<'conversation'>
 const FILE_MUTATION_ICON = <IconEditOutlineRegular size={14} />
 
 const CONTENT_FIELDS = ['content', 'old_string', 'new_string']
@@ -30,13 +31,20 @@ function contentKilobytes(block: FileMutationRowProps['block']): number | null {
  * Shows the path and decoded input size through preparation, execution, and
  * settlement, with the applied diff available once the call settles.
  */
-export function FileMutationRow({ toolName, block, cwd, home, openFile, inspect, useDisclosure, t }: FileMutationRowProps) {
+export function FileMutationRow({
+  toolName, block, cwd, home, openFile, useContextMenu, sessionId, resolveFilePath, inspect, useDisclosure, t,
+}: FileMutationRowProps) {
+  const { getTriggerProps } = useContextMenu()
   const model = toolRowModel(toolName, block, cwd, home)
+  const path = model.filePath
   const diff = diffCardModel(block)
   const kilobytes = contentKilobytes(block)
   const size = kilobytes === null ? null : t('tool.preparing.content', { kilobytes })
   return (
     <ToolRow
+      fileContextMenuProps={getTriggerProps(path === undefined ? undefined : () => ({
+        kind: 'file', value: { sessionId, path: resolveFilePath(path) },
+      }))}
       useDisclosure={useDisclosure}
       t={t}
       variant={model.variant}
@@ -59,11 +67,11 @@ export function FileMutationRow({ toolName, block, cwd, home, openFile, inspect,
 /** Registers the edit and write conversation rows. */
 export const fileMutationToolview = {
   name: 'file-mutation-toolview',
-  inject: ['slots'],
+  inject: ['slots', 'sessions'],
   apply(ctx: Context): void {
     ctx.slots.inject('tool.call.toolview', function* () {
-      yield ctx.slots.register({ name: 'tool.call.toolview', key: 'edit', locale: NS }, FileMutationRow)
-      yield ctx.slots.register({ name: 'tool.call.toolview', key: 'write', locale: NS }, FileMutationRow)
+      yield ctx.slots.register({ name: 'tool.call.toolview', key: 'edit', locale: NS, inject: toolFileInject(ctx) }, FileMutationRow)
+      yield ctx.slots.register({ name: 'tool.call.toolview', key: 'write', locale: NS, inject: toolFileInject(ctx) }, FileMutationRow)
     })
   },
 }
diff --git a/packages/client/ui-tool/src/client/tool/toolviews/read-family-row.tsx b/packages/client/ui-tool/src/client/tool/toolviews/read-family-row.tsx
index bd1ca438bd..d9181716e2 100644
--- a/packages/client/ui-tool/src/client/tool/toolviews/read-family-row.tsx
+++ b/packages/client/ui-tool/src/client/tool/toolviews/read-family-row.tsx
@@ -8,13 +8,15 @@
 
 import type { ReactNode } from 'react'
 import { IconBrowseOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { ContextMenuBindings } from '@deepseek-ai/dsh-client-ui-context-menu/client'
+import type { ToolFileInjected } from '../file-menu.ts'
 import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
 import type { ToolCallViewProps } from '../../contract/slots.ts'
 import { toolRowModel } from '../models/tool-call-model.ts'
 import { ToolRow, type ToolRowProps } from '../components/ToolRow.tsx'
 
 /** Full row props of a read-family toolview: the runtime share plus its locale seat. */
-export type ReadFamilyRowProps = ToolCallViewProps & { t: ToolRowProps['t'] }
+export type ReadFamilyRowProps = ToolCallViewProps & ToolFileInjected & { t: ToolRowProps['t'] }
 
 /** read_image row props: the runtime share, the declared image child slot, and the locale seat. */
 export type ReadImageRowProps = ReadFamilyRowProps & PropsRenderSlots<'tool.call.images'>
@@ -32,15 +34,22 @@ export type ReadFamilyCard = Pick<ToolRowProps, 'read' | 'image' | 'renderSlot'
  * caller's card material.
  * @param props - the toolview runtime share and locale seat.
  * @param card - the card props this row owns.
+ * @param getTriggerProps - ordinary menu bindings supplied by the toolview Slot.
  * @returns the assembled ToolRow.
  */
 export function readFamilyRow(
-  { toolName, block, cwd, home, openFile, inspect, useDisclosure, t }: ReadFamilyRowProps,
+  { toolName, block, cwd, home, openFile, resolveFilePath, sessionId, inspect, useDisclosure, t }: ReadFamilyRowProps,
   card: ReadFamilyCard,
+  getTriggerProps: ContextMenuBindings['getTriggerProps'],
 ): ReactNode {
   const model = toolRowModel(toolName, block, cwd, home)
+  const path = model.filePath
   return (
     <ToolRow
+      fileContextMenuProps={getTriggerProps(path === undefined ? undefined : () => ({
+        kind: 'file', value: { sessionId, path: resolveFilePath(path),
+          ...(card.filePathLine === undefined ? {} : { line: card.filePathLine }) },
+      }))}
       useDisclosure={useDisclosure}
       t={t}
       variant={model.variant}
diff --git a/packages/client/ui-tool/src/client/tool/toolviews/read-image-row.tsx b/packages/client/ui-tool/src/client/tool/toolviews/read-image-row.tsx
index 14a41fb714..2d45db3672 100644
--- a/packages/client/ui-tool/src/client/tool/toolviews/read-image-row.tsx
+++ b/packages/client/ui-tool/src/client/tool/toolviews/read-image-row.tsx
@@ -17,6 +17,7 @@
 // content until `execute` returns, so a running read_image shows the summary row
 // alone.
 
+import { toolFileInject } from '../file-menu.ts'
 import type { Context } from '@deepseek-ai/cordis'
 import { imageCardModel } from '../models/image-card-model.ts'
 import { readFamilyRow, type ReadImageRowProps } from './read-family-row.tsx'
@@ -29,11 +30,12 @@ import { CONVERSATION_NS as NS } from '../../locale.ts'
  */
 export function ReadImageRow(props: ReadImageRowProps) {
   const { block, renderSlot, loadImage } = props
+  const { getTriggerProps } = props.useContextMenu()
   return readFamilyRow(props, {
     image: imageCardModel(block),
     renderSlot,
     loadImage,
-  })
+  }, getTriggerProps)
 }
 
 /**
@@ -44,7 +46,7 @@ export function ReadImageRow(props: ReadImageRowProps) {
  */
 export const readImageToolview = {
   name: 'read-image-toolview',
-  inject: ['slots'],
+  inject: ['slots', 'sessions'],
   /**
    * Register the read_image row into the Tool-owned keyed view slot.
    * @param ctx - registrant context (disposal rides ctx.effect inside slots.register).
@@ -55,6 +57,7 @@ export const readImageToolview = {
         name: 'tool.call.toolview',
         key: 'read_image',
         locale: NS,
+        inject: toolFileInject(ctx),
         children: { 'tool.call.images': { kind: 'single', scope: 'session' } },
       }, ReadImageRow))
   },
diff --git a/packages/client/ui-tool/src/client/tool/toolviews/read-row.tsx b/packages/client/ui-tool/src/client/tool/toolviews/read-row.tsx
index a6a8a64b28..88f35ff03c 100644
--- a/packages/client/ui-tool/src/client/tool/toolviews/read-row.tsx
+++ b/packages/client/ui-tool/src/client/tool/toolviews/read-row.tsx
@@ -1,3 +1,5 @@
+import type { ToolFileInjected } from '../file-menu.ts'
+import { toolFileInject } from '../file-menu.ts'
 import type { Context } from '@deepseek-ai/cordis'
 import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
 import type { ToolCallViewProps } from '../../contract/slots.ts'
@@ -5,7 +7,7 @@ import { readCallLine, readCardModel } from '../models/read-card-model.ts'
 import { readFamilyRow } from './read-family-row.tsx'
 import { CONVERSATION_NS as NS } from '../../locale.ts'
 
-type ReadRowProps = ToolCallViewProps & PropsLocale<'conversation'>
+type ReadRowProps = ToolCallViewProps & ToolFileInjected & PropsLocale<'conversation'>
 
 /**
  * Lets users expand a completed read result and open its reported path at the
@@ -13,18 +15,19 @@ type ReadRowProps = ToolCallViewProps & PropsLocale<'conversation'>
  */
 export function ReadRow(props: ReadRowProps) {
   const { block, cwd, home } = props
+  const { getTriggerProps } = props.useContextMenu()
   return readFamilyRow(props, {
     read: readCardModel(block, cwd, home),
     filePathLine: readCallLine(block),
-  })
+  }, getTriggerProps)
 }
 
 /** Registers the read tool's conversation row. */
 export const readToolview = {
   name: 'read-toolview',
-  inject: ['slots'],
+  inject: ['slots', 'sessions'],
   apply(ctx: Context): void {
     ctx.slots.inject('tool.call.toolview', () =>
-      ctx.slots.register({ name: 'tool.call.toolview', key: 'read', locale: NS }, ReadRow))
+      ctx.slots.register({ name: 'tool.call.toolview', key: 'read', locale: NS, inject: toolFileInject(ctx) }, ReadRow))
   },
 }
diff --git a/packages/client/ui-tool/src/client/tool/toolviews/web-row.tsx b/packages/client/ui-tool/src/client/tool/toolviews/web-row.tsx
index bea710dc28..452eb0593b 100644
--- a/packages/client/ui-tool/src/client/tool/toolviews/web-row.tsx
+++ b/packages/client/ui-tool/src/client/tool/toolviews/web-row.tsx
@@ -15,12 +15,15 @@ const WEB_TITLE_KEYS = {
 } as const
 
 /** Lets users expand a completed web search or fetch result. */
-export function WebRow({ toolName, block, inspect, useDisclosure, t }: WebRowProps) {
+export function WebRow({ toolName, block, useContextMenu, sessionId, inspect, useDisclosure, t }: WebRowProps) {
+  const { getTriggerProps } = useContextMenu()
+  const href = webFetchHref(block)
   const model = toolRowModel(toolName, block)
   const web = webCardModel(block)
   const icon = toolName === 'web_fetch' ? <IconBrowseOutlineRegular size={14} /> : <IconGlobeOutlineRegular size={14} />
   return (
     <ToolRow
+      urlContextMenuProps={getTriggerProps(href === undefined ? undefined : { kind: 'url', value: { sessionId, url: href } })}
       useDisclosure={useDisclosure}
       t={t}
       variant={model.variant}
@@ -33,7 +36,7 @@ export function WebRow({ toolName, block, inspect, useDisclosure, t }: WebRowPro
       output={model.output}
       errorSummary={model.errorSummary}
       web={web}
-      href={webFetchHref(block)}
+      href={href}
       state={model.state}
       inspect={inspect}
     />
diff --git a/packages/client/ui-tool/tests/assembly-surfaces.client.spec.tsx b/packages/client/ui-tool/tests/assembly-surfaces.client.spec.tsx
index 3312e2916d..5dc1711ca4 100644
--- a/packages/client/ui-tool/tests/assembly-surfaces.client.spec.tsx
+++ b/packages/client/ui-tool/tests/assembly-surfaces.client.spec.tsx
@@ -1,4 +1,5 @@
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { toolSessionEvents } from './tool-fixtures.client.ts'
 // @vitest-environment jsdom
 /** Tool assembly acceptance through the real ui-conversation host. */
@@ -102,6 +103,8 @@ async function bench(nodes: ToolResultNode[]) {
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
   runtime.slots.installLocale(locale)
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   await runtime.sessions.add({
     id: SID,
     summary: { title: 'S', displayTitle: 'S', cwd: '/proj' },
diff --git a/packages/client/ui-tool/tests/chat-ptc-subcalls.client.spec.tsx b/packages/client/ui-tool/tests/chat-ptc-subcalls.client.spec.tsx
index 15f6af1525..18c3d6937b 100644
--- a/packages/client/ui-tool/tests/chat-ptc-subcalls.client.spec.tsx
+++ b/packages/client/ui-tool/tests/chat-ptc-subcalls.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { cleanup, fireEvent } from '@testing-library/react'
@@ -141,6 +142,8 @@ async function bench(snapshot: ChatSnapshot) {
   ctx.provide('locale', locale)
   locale.register(CONVERSATION_NS, { zh: conversationZh, en: conversationEn })
   runtime.slots.installLocale(locale)
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
 
   await runtime.root.declare(ROOT_CHILDREN, AppRoot)
   await runtime.mount({ inject: [...injectChat], apply: applyChat })
diff --git a/packages/client/ui-tool/tests/coverage-tails.client.spec.tsx b/packages/client/ui-tool/tests/coverage-tails.client.spec.tsx
index 99a97e039b..e7e0e9382b 100644
--- a/packages/client/ui-tool/tests/coverage-tails.client.spec.tsx
+++ b/packages/client/ui-tool/tests/coverage-tails.client.spec.tsx
@@ -62,10 +62,12 @@ describe('Tool presentation tails', () => {
       content: [], isError: false, subCalls: [],
     }
     const props: GenericToolCardProps = {
+      getFileTriggerProps: () => ({}),
       loadImage: vi.fn(() => Promise.reject(new Error('not used'))),
       useDisclosure, callId: 'c5', toolName: 'todo_write', phase: 'result' as const, block: settled, openFile: vi.fn(), t,
     }
-    const view = render(<GenericToolCard {...props} />)
+    const view = render(<GenericToolCard {...props}
+      getFileTriggerProps={() => ({})} />)
     expect(view.container.querySelector('[data-variant="others"] svg')).not.toBeNull()
     expect(view.container.querySelector('[data-state="ok"]')).not.toBeNull()
   })
diff --git a/packages/client/ui-tool/tests/diff-card.client.spec.tsx b/packages/client/ui-tool/tests/diff-card.client.spec.tsx
index 1cbd9c43dd..021d62a8df 100644
--- a/packages/client/ui-tool/tests/diff-card.client.spec.tsx
+++ b/packages/client/ui-tool/tests/diff-card.client.spec.tsx
@@ -3,7 +3,7 @@
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { useDisclosure } from '@deepseek-ai/dsh-client-ui-chat/src/client/chat/use-disclosure.ts'
 import { cleanup, fireEvent, render } from '@testing-library/react'
-import { bindSnapshotSelector } from '@deepseek-ai/dsh-client-test-runtime'
+import { contextMenuHook, bindSnapshotSelector } from '@deepseek-ai/dsh-client-test-runtime'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import type { StartedToolCall, ToolResultNode } from '@deepseek-ai/dsh-client-ui-chat/client'
 import type { SessionListState } from '@deepseek-ai/dsh-api-session-controller/client'
@@ -172,6 +172,7 @@ describe('diffCardModel', () => {
 
 describe('chat row diff body', () => {
   const ownerProps = (block: StartedToolCall | ToolResultNode): GenericToolCardProps => ({
+    getFileTriggerProps: () => ({}),
     loadImage: vi.fn(() => Promise.reject(new Error('not used'))),
     useDisclosure, callId: 'c1', toolName: 'edit', ...('kind' in block ? { phase: 'result' as const, block: block } : { phase: block.phase, block: block }), openFile: vi.fn(), t,
   })
@@ -203,7 +204,8 @@ describe('chat row diff body', () => {
         call: { name: 'some_tool', argsRaw: '{"foo":"bar"}' },
         meta: undefined,
       }),
-    }} />)
+    }}
+    getFileTriggerProps={() => ({})} />)
     fireEvent.click(view.container.querySelector('[data-expandable]')!)
     expect(view.container.querySelector('[data-diff]')).toBeNull()
     expect(view.getByText(/"foo"/)).toBeTruthy()
@@ -220,6 +222,7 @@ describe('FileMutationRow diff card', () => {
 
   const rowProps = (block: StartedToolCall | ToolResultNode, toolName = 'edit'): FileMutationRowProps => ({
     useDisclosure, callId: 'c1', toolName, ...('kind' in block ? { phase: 'result' as const, block: block } : { phase: block.phase, block: block }), openFile: vi.fn(), cwd: '/w/app',
+    useContextMenu: contextMenuHook(), resolveFilePath: path => path,
     sessionId: SID, useSessions: bindSnapshotSelector(list()),
     t,
   } as FileMutationRowProps)
@@ -354,7 +357,7 @@ describe('fileMutationToolview registration', () => {
     expect(registered.map(r => r.key).sort()).toEqual(['edit', 'write'])
     // Both keys claim the conversation locale seat ToolRow's body copy needs.
     expect(registered.map(r => r.locale)).toEqual(['conversation', 'conversation'])
-    expect(fileMutationToolview.inject).toEqual(['slots'])
+    expect(fileMutationToolview.inject).toEqual(['slots', 'sessions'])
     // Disposal removes each contribution (packages/AGENTS.md registry contract).
     disposeInjection()
     expect(registered.every(r => r.disposed)).toBe(true)
diff --git a/packages/client/ui-tool/tests/image-card.client.spec.tsx b/packages/client/ui-tool/tests/image-card.client.spec.tsx
index 5343cfed91..943220addc 100644
--- a/packages/client/ui-tool/tests/image-card.client.spec.tsx
+++ b/packages/client/ui-tool/tests/image-card.client.spec.tsx
@@ -15,7 +15,7 @@ import { afterEach, describe, expect, it, vi } from 'vitest'
 import { useDisclosure } from '@deepseek-ai/dsh-client-ui-chat/src/client/chat/use-disclosure.ts'
 import { cleanup, fireEvent, render } from '@testing-library/react'
 import { Context } from '@deepseek-ai/cordis'
-import { bindSnapshotSelector, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { contextMenuHook, bindSnapshotSelector, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
 import type { StartedToolCall, ToolResultNode } from '@deepseek-ai/dsh-client-ui-chat/client'
@@ -280,6 +280,7 @@ describe('ReadImageRow keyed toolview', () => {
     loader: MessageImageLoader = loadImage,
   ): Parameters<typeof ReadImageRow>[0] => ({
     useDisclosure, callId: 'c1', toolName: 'read_image', ...('kind' in block ? { phase: 'result' as const, block: block } : { phase: block.phase, block: block }), openFile: vi.fn(), renderSlot, loadImage: loader,
+    useContextMenu: contextMenuHook(), resolveFilePath: path => path,
     sessionId: SID, useSessions: bindSnapshotSelector(list()),
     t,
   } as Parameters<typeof ReadImageRow>[0])
@@ -397,12 +398,12 @@ describe('ReadImageRow keyed toolview', () => {
       },
     } } as unknown as Context
     readImageToolview.apply(ctx)
-    expect(registered).toEqual([{
+    expect(registered).toMatchObject([{
       name: 'tool.call.toolview',
       key: 'read_image',
       locale: 'conversation',
       children: { 'tool.call.images': { kind: 'single', scope: 'session' } },
     }])
-    expect(readImageToolview.inject).toEqual(['slots'])
+    expect(readImageToolview.inject).toEqual(['slots', 'sessions'])
   })
 })
diff --git a/packages/client/ui-tool/tests/preparing-rows.client.spec.tsx b/packages/client/ui-tool/tests/preparing-rows.client.spec.tsx
index fe1086dcfe..88ae88bd5d 100644
--- a/packages/client/ui-tool/tests/preparing-rows.client.spec.tsx
+++ b/packages/client/ui-tool/tests/preparing-rows.client.spec.tsx
@@ -3,7 +3,7 @@ import { afterEach, describe, expect, it, vi } from 'vitest'
 import { cleanup, fireEvent, render } from '@testing-library/react'
 import { useDisclosure } from '@deepseek-ai/dsh-client-ui-chat/src/client/chat/use-disclosure.ts'
 import type { StartedToolCall, ToolResultNode } from '@deepseek-ai/dsh-client-ui-chat/client'
-import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { contextMenuHook, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import { en } from '@deepseek-ai/dsh-client-ui-conversation/src/client/locales.ts'
 import { en as common } from '@deepseek-ai/dsh-client-locale/src/locales/en.ts'
 import { PartialArguments } from '@deepseek-ai/dsh-util-values'
@@ -22,10 +22,13 @@ import { toolRowModel } from '../src/client/tool/models/tool-call-model.ts'
 
 afterEach(cleanup)
 
-type Props = Parameters<typeof TodoRow>[0] & Parameters<typeof ReadImageRow>[0] & Parameters<typeof AskQuestionRow>[0]
+type Props = Parameters<typeof GenericToolCard>[0] & Parameters<typeof TodoRow>[0]
+  & Parameters<typeof ReadImageRow>[0] & Parameters<typeof AskQuestionRow>[0]
 
 function preparation(name: string, args = new PartialArguments()): Extract<Props, { phase: 'preparing' }> {
   return {
+    getFileTriggerProps: () => ({}),
+    useContextMenu: contextMenuHook(), resolveFilePath: path => path,
     phase: 'preparing', callId: 'call', toolName: name,
     block: { phase: 'preparing', args, callId: 'call', name, turn: 1, step: 1, time: 1, subCalls: [] },
     cwd: '/workspace', t: makeTranslate(en, common), useDisclosure, openFile: vi.fn(), loadImage: vi.fn(),
diff --git a/packages/client/ui-tool/tests/read-card.client.spec.tsx b/packages/client/ui-tool/tests/read-card.client.spec.tsx
index 1963336e73..20be4da395 100644
--- a/packages/client/ui-tool/tests/read-card.client.spec.tsx
+++ b/packages/client/ui-tool/tests/read-card.client.spec.tsx
@@ -4,7 +4,7 @@ import { afterEach, describe, expect, it, vi } from 'vitest'
 import { useDisclosure } from '@deepseek-ai/dsh-client-ui-chat/src/client/chat/use-disclosure.ts'
 import { cleanup, fireEvent, render } from '@testing-library/react'
 import { Context } from '@deepseek-ai/cordis'
-import { bindSnapshotSelector, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { contextMenuHook, bindSnapshotSelector, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
 import type { StartedToolCall, ToolResultNode } from '@deepseek-ai/dsh-client-ui-chat/client'
@@ -173,6 +173,7 @@ describe('readCallLine', () => {
 
 describe('GenericToolCard read body', () => {
   const ownerProps = (block: StartedToolCall | ToolResultNode): GenericToolCardProps => ({
+    getFileTriggerProps: () => ({}),
     loadImage: vi.fn(() => Promise.reject(new Error('not used'))),
     useDisclosure, callId: 'c1', toolName: 'read', ...('kind' in block ? { phase: 'result' as const, block: block } : { phase: block.phase, block: block }), openFile: vi.fn(), t,
   })
@@ -199,7 +200,8 @@ describe('GenericToolCard read body', () => {
       useDisclosure, callId: 'c1', toolName: 'echo', phase: 'result' as const, block: settled({
         call: { name: 'echo', argsRaw: '{"text":"x"}' }, meta: undefined,
       }), openFile: vi.fn(), loadImage: vi.fn(() => Promise.reject(new Error('not used'))), t,
-    })} />)
+    })}
+    getFileTriggerProps={() => ({})} />)
     toggleRow(view)
     expect(view.container.querySelector('[data-read]')).toBeNull()
   })
@@ -220,6 +222,7 @@ describe('ReadRow keyed toolview', () => {
 
   const rowProps = (block: StartedToolCall | ToolResultNode): Parameters<typeof ReadRow>[0] => ({
     useDisclosure, callId: 'c1', toolName: 'read', ...('kind' in block ? { phase: 'result' as const, block: block } : { phase: block.phase, block: block }), openFile: vi.fn(),
+    useContextMenu: contextMenuHook(), resolveFilePath: path => path,
     sessionId: SID, useSessions: bindSnapshotSelector(list()),
     t,
   } as Parameters<typeof ReadRow>[0])
@@ -290,7 +293,7 @@ describe('ReadRow keyed toolview', () => {
     } } as unknown as Context
     readToolview.apply(ctx)
     // The row composes ToolRow, so it declares its locale namespace at the seat.
-    expect(registered).toEqual([{ name: 'tool.call.toolview', key: 'read', locale: 'conversation' }])
-    expect(readToolview.inject).toEqual(['slots'])
+    expect(registered).toMatchObject([{ name: 'tool.call.toolview', key: 'read', locale: 'conversation' }])
+    expect(readToolview.inject).toEqual(['slots', 'sessions'])
   })
 })
diff --git a/packages/client/ui-tool/tests/search-card.client.spec.tsx b/packages/client/ui-tool/tests/search-card.client.spec.tsx
index 42766a2e9d..bdb0d861ff 100644
--- a/packages/client/ui-tool/tests/search-card.client.spec.tsx
+++ b/packages/client/ui-tool/tests/search-card.client.spec.tsx
@@ -203,6 +203,7 @@ describe('searchCardModel', () => {
 
 describe('chat row search body (GenericToolCard fallback)', () => {
   const ownerProps = (block: StartedToolCall | ToolResultNode, toolName: string): GenericToolCardProps => ({
+    getFileTriggerProps: () => ({}),
     loadImage: vi.fn(() => Promise.reject(new Error('not used'))),
     useDisclosure, callId: 'c1', toolName, ...('kind' in block ? { phase: 'result' as const, block: block } : { phase: block.phase, block: block }), openFile: vi.fn(), t,
   })
diff --git a/packages/client/ui-tool/tests/terminal-card.client.spec.tsx b/packages/client/ui-tool/tests/terminal-card.client.spec.tsx
index 0ef6514c4e..426170379f 100644
--- a/packages/client/ui-tool/tests/terminal-card.client.spec.tsx
+++ b/packages/client/ui-tool/tests/terminal-card.client.spec.tsx
@@ -381,6 +381,7 @@ describe('terminalCardModel', () => {
 
 describe('chat row terminal body', () => {
   const ownerProps = (block: StartedToolCall | ToolResultNode): GenericToolCardProps => ({
+    getFileTriggerProps: () => ({}),
     loadImage: vi.fn(() => Promise.reject(new Error('not used'))),
     useDisclosure, callId: 'c1', toolName: 'bash', ...('kind' in block ? { phase: 'result' as const, block: block } : { phase: block.phase, block: block }), openFile: vi.fn(), t,
   })
@@ -606,7 +607,8 @@ describe('BashRow terminal card', () => {
     const parent = parentCallId === undefined ? {} : { parentCallId }
     const renderRow = (block: StartedToolCall | ToolResultNode) => {
       const props = { ...rowProps(block), toolName: name, inspect }
-      return name === 'bash' ? <BashRow {...props} /> : <GenericToolCard {...props} />
+      return name === 'bash' ? <BashRow {...props} /> : <GenericToolCard {...props}
+        getFileTriggerProps={() => ({})} />
     }
     const view = render(renderRow(running({ name, argsRaw, ...parent })))
     const row = view.getByRole('button')
@@ -657,7 +659,8 @@ describe('BashRow terminal card', () => {
     const argsRaw = shellArgs({ run_in_background: true })
     const renderRow = (block: StartedToolCall | ToolResultNode) => {
       const props = { ...rowProps(block), toolName: name }
-      return name === 'bash' ? <BashRow {...props} /> : <GenericToolCard {...props} />
+      return name === 'bash' ? <BashRow {...props} /> : <GenericToolCard {...props}
+        getFileTriggerProps={() => ({})} />
     }
     const view = render(renderRow(running({ name, argsRaw })))
     const row = view.getByRole('button')
@@ -685,7 +688,8 @@ describe('BashRow terminal card', () => {
     vi.useFakeTimers()
     try {
       Object.defineProperty(navigator, 'clipboard', { configurable: true, value: { writeText } })
-      const view = render(renderer === 'BashRow' ? <BashRow {...props} /> : <GenericToolCard {...props} />)
+      const view = render(renderer === 'BashRow' ? <BashRow {...props} /> : <GenericToolCard {...props}
+        getFileTriggerProps={() => ({})} />)
       fireEvent.click(view.container.querySelector('[data-expandable]')!)
       expect([...view.container.querySelectorAll('[data-command-text]')].map(line => line.textContent)).toEqual(lines)
       expect(view.getByText('  first\tcolumn', RAW)).toBeTruthy()
diff --git a/packages/client/ui-tool/tests/tool-call-tree.client.spec.tsx b/packages/client/ui-tool/tests/tool-call-tree.client.spec.tsx
index ba95f97801..ab63e54639 100644
--- a/packages/client/ui-tool/tests/tool-call-tree.client.spec.tsx
+++ b/packages/client/ui-tool/tests/tool-call-tree.client.spec.tsx
@@ -6,7 +6,7 @@ import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { bindDisclosure, useDisclosure } from '@deepseek-ai/dsh-client-ui-chat/src/client/chat/use-disclosure.ts'
 import type { SessionSnapshot } from '@deepseek-ai/dsh-api-session-controller/client'
 import type { ToolCallBlock, ToolResultNode } from '@deepseek-ai/dsh-client-ui-chat/client'
-import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { contextMenuHook, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
 import type { ToolCallOwnerProps, ToolTreeProps } from '../src/client/contract/slots.ts'
 import { ToolCallTree } from '../src/client/tool/ToolCallTree.tsx'
@@ -53,7 +53,9 @@ function props(
     inspectCall: vi.fn(),
     forkAt: vi.fn(),
     loadImage: vi.fn(() => Promise.reject(new Error('not used'))),
-    fileMentions: vi.fn(),
+    useContextMenu: contextMenuHook(),
+    sessionId: 'original' as ToolTreeProps['sessionId'],
+    resolveFilePath: path => path,
     useHostInfo: ((selector: (info: { home: string | undefined }) => unknown) => selector({ home })) as ToolTreeProps['useHostInfo'],
     t,
   }
@@ -61,6 +63,25 @@ function props(
 }
 
 describe('ToolCallTree', () => {
+  it('binds root and nested fallback files without a Markdown provider', () => {
+    const block = { ...root('parent', { name: 'read', argsRaw: '{"file_path":"parent.ts"}' }),
+      subCalls: [root('child', { name: 'read', argsRaw: '{"file_path":"child.ts"}' })] }
+    const opened = vi.fn()
+    const input = props(block)
+    let directory = '/old'
+    const view = render(<ToolCallTree {...input}
+      useContextMenu={contextMenuHook(opened)} resolveFilePath={path => `${directory}/${path}`} />)
+    directory = '/current'
+    fireEvent.contextMenu(view.getByRole('button', { name: 'parent.ts' }), { clientX: 12, clientY: 34 })
+    fireEvent.keyDown(view.getByRole('button', { name: 'child.ts' }), { key: 'F10', shiftKey: true })
+    expect(opened.mock.calls).toEqual([
+      [{ kind: 'file', value: { sessionId: 'original', path: '/current/parent.ts' } }, { x: 12, y: 34 }],
+      [{ kind: 'file', value: { sessionId: 'original', path: '/current/child.ts' } }, { x: 0, y: 0 }],
+    ])
+    expect(input.openFile).not.toHaveBeenCalled()
+    expect(view.container.querySelector('[aria-expanded="true"]')).toBeNull()
+  })
+
   it('dispatches only the parent and changed child among 100 sibling calls', () => {
     const children = Array.from({ length: 100 }, (_, index) => root(`child-${index}`, { name: 'custom_child', argsRaw: '{}' }))
     const block = { ...root('parent', { name: 'custom_parent', argsRaw: '{}' }), subCalls: children }
diff --git a/packages/client/ui-tool/tests/tool-row.client.spec.tsx b/packages/client/ui-tool/tests/tool-row.client.spec.tsx
index 3020472796..beadba5f5e 100644
--- a/packages/client/ui-tool/tests/tool-row.client.spec.tsx
+++ b/packages/client/ui-tool/tests/tool-row.client.spec.tsx
@@ -1,4 +1,6 @@
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { useDisclosure } from '@deepseek-ai/dsh-client-ui-chat/src/client/chat/use-disclosure.ts'
 import { cleanup, fireEvent, render } from '@testing-library/react'
@@ -173,7 +175,8 @@ describe('tool-call-model', () => {
       expect(model.filePath).toBe('/workspace/b/note.txt')
       expect(model.summary).toBe('note.txt')
       const openFile = vi.fn()
-      const view = render(<GenericToolCard useDisclosure={useDisclosure} phase="result" callId="c1" toolName={name} block={block} cwd={cwd} openFile={openFile} loadImage={vi.fn(async () => '')} t={t} />)
+      const view = render(<GenericToolCard
+        getFileTriggerProps={() => ({})} useDisclosure={useDisclosure} phase="result" callId="c1" toolName={name} block={block} cwd={cwd} openFile={openFile} loadImage={vi.fn(async () => '')} t={t} />)
       fireEvent.click(view.getByText('note.txt'))
       expect(openFile).toHaveBeenCalledWith('/workspace/b/note.txt')
       view.unmount()
@@ -330,6 +333,28 @@ describe('ToolRow', () => {
     summary: 'List files', bodyRaw: '{"a":1}', state: 'ok' as const,
   }
 
+  it('declares file and URL menus without losing line numbers or toggling the row', () => {
+    const open = vi.fn(), openFile = vi.fn()
+    const view = render(<ToolRow fileContextMenuProps={contextMenuHook(open)().getTriggerProps({ kind: 'file', value: { sessionId: 'original' as SessionId, path: '/workspace/file.ts', line: 42 } })} {...rowProps} variant="read" summary="file.ts:42" filePath="/workspace/file.ts" filePathLine={42} onOpenFile={openFile} />)
+    const file = view.getByRole('button', { name: 'file.ts:42' })
+    file.getBoundingClientRect = () => new DOMRect(10, 20, 100, 20)
+    fireEvent.contextMenu(file, { clientX: 30, clientY: 40 })
+    fireEvent.keyDown(file, { key: 'F10', shiftKey: true })
+    expect(open.mock.calls).toEqual([
+      [{ kind: 'file', value: { sessionId: 'original', path: '/workspace/file.ts', line: 42 } }, { x: 30, y: 40 }],
+      [{ kind: 'file', value: { sessionId: 'original', path: '/workspace/file.ts', line: 42 } }, { x: 10, y: 40 }],
+    ])
+    expect(view.container.querySelector('[aria-expanded]')?.getAttribute('aria-expanded')).toBe('false')
+    expect(openFile).not.toHaveBeenCalled()
+    view.rerender(<ToolRow urlContextMenuProps={contextMenuHook(open)().getTriggerProps({ kind: 'url', value: { url: 'https://example.com?q=1#part' } })} {...rowProps} summary="Website" href="https://example.com?q=1#part" />)
+    const link = view.getByRole('link')
+    fireEvent.contextMenu(link, { clientX: 40, clientY: 50 })
+    expect(open).toHaveBeenLastCalledWith({ kind: 'url', value: { url: 'https://example.com?q=1#part' } }, { x: 40, y: 50 })
+    fireEvent.keyDown(link, { key: 'F10', shiftKey: true })
+    expect(open).toHaveBeenLastCalledWith({ kind: 'url', value: { url: 'https://example.com?q=1#part' } }, { x: 0, y: 0 })
+    expect(view.container.querySelector('[aria-expanded]')?.getAttribute('aria-expanded')).toBe('false')
+  })
+
   it('renders leading icon, title and summary while collapsed', () => {
     const view = render(<ToolRow {...rowProps} />)
     expect(view.queryByTestId('tool-icon')).not.toBeNull()
@@ -558,12 +583,14 @@ describe('ToolRow', () => {
 
 describe('GenericToolCard', () => {
   const props = (toolName: string, block: StartedToolCall | ToolResultNode): GenericToolCardProps => ({
+    getFileTriggerProps: () => ({}),
     loadImage: vi.fn(() => Promise.reject(new Error('not used'))),
     useDisclosure, callId: 'c1', toolName, ...('kind' in block ? { phase: 'result' as const, block: block } : { phase: block.phase, block: block }), openFile: vi.fn(), t,
   })
 
   it('renders the classified variant row from the frozen slice', () => {
-    const view = render(<GenericToolCard {...props('bash', result())} />)
+    const view = render(<GenericToolCard {...props('bash', result())}
+      getFileTriggerProps={() => ({})} />)
     expect(view.getByText('运行命令')).toBeTruthy()
     expect(view.getByText('List files')).toBeTruthy()
     expect(view.container.querySelector('[data-variant="bash"]')).not.toBeNull()
@@ -577,7 +604,8 @@ describe('GenericToolCard', () => {
       content: [{ type: 'text', text: 'failed' }],
       isError: true,
     })
-    const view = render(<GenericToolCard {...props(toolName, failed)} />)
+    const view = render(<GenericToolCard {...props(toolName, failed)}
+      getFileTriggerProps={() => ({})} />)
     const root = view.container.querySelector(`[data-tool="${toolName}"]`)!
     expect(root.querySelector('[data-disclosure-row] > :first-child svg')).not.toBeNull()
     expect(root.querySelector('[data-state]')).toBeNull()
@@ -585,7 +613,8 @@ describe('GenericToolCard', () => {
 
   it('unknown tools land on the others variant titled Tool call', () => {
     const view = render(
-      <GenericToolCard {...props('custom_tool', running({ name: 'custom_tool', argsRaw: '{"note":"x"}' }))} />,
+      <GenericToolCard {...props('custom_tool', running({ name: 'custom_tool', argsRaw: '{"note":"x"}' }))}
+        getFileTriggerProps={() => ({})} />,
     )
     expect(view.getByText('工具调用')).toBeTruthy()
     expect(view.container.querySelector('[data-variant="others"]')).not.toBeNull()
@@ -597,7 +626,8 @@ describe('GenericToolCard', () => {
       <GenericToolCard {...props('edit', running({
         name: 'edit',
         argsRaw: '{"file_path":"src/x.ts","old_string":"before","new_string":"after"}',
-      }))} />,
+      }))}
+      getFileTriggerProps={() => ({})} />,
     )
     expect(view.getByText('编辑')).toBeTruthy()
     expect(view.getByText('src/x.ts')).toBeTruthy()
@@ -610,7 +640,8 @@ describe('GenericToolCard', () => {
       <GenericToolCard {...props('write', running({
         name: 'write',
         argsRaw: '{"file_path":"src/x.ts","content":"hello"}',
-      }))} />,
+      }))}
+      getFileTriggerProps={() => ({})} />,
     )
     expect(view.getByText('写入')).toBeTruthy()
     expect(view.getByText('src/x.ts')).toBeTruthy()
@@ -620,7 +651,8 @@ describe('GenericToolCard', () => {
 
   it('passes the owner inspect callback through to the expanded row pill', () => {
     const inspect = vi.fn()
-    const view = render(<GenericToolCard {...props('bash', result())} inspect={inspect} />)
+    const view = render(<GenericToolCard {...props('bash', result())} inspect={inspect}
+      getFileTriggerProps={() => ({})} />)
     fireEvent.click(view.getByRole('button', { name: /运行命令/ }))
     fireEvent.click(view.getByText('查看'))
     expect(inspect).toHaveBeenCalledTimes(1)
@@ -628,12 +660,14 @@ describe('GenericToolCard', () => {
 
   it('file-path summary click reaches openFile; bash summary does not', () => {
     const file = props('read', result({ call: { name: 'read', argsRaw: '{"path":"src/x.ts"}' } }))
-    const fileView = render(<GenericToolCard {...file} />)
+    const fileView = render(<GenericToolCard {...file}
+      getFileTriggerProps={() => ({})} />)
     fireEvent.click(fileView.getByText('src/x.ts'))
     expect(file.openFile).toHaveBeenCalledWith('src/x.ts')
 
     const bash = props('bash', result())
-    const bashView = render(<GenericToolCard {...bash} />)
+    const bashView = render(<GenericToolCard {...bash}
+      getFileTriggerProps={() => ({})} />)
     fireEvent.click(bashView.getByText('List files'))
     expect(bash.openFile).not.toHaveBeenCalled()
   })
@@ -647,7 +681,8 @@ describe('GenericToolCard', () => {
       isError: true,
       error: { name: 'AutoReviewDeniedError', code: 'AUTO_REVIEW_DENIED', reason: '  scope\r\nwas not authorized  ' },
     })
-    const view = render(<GenericToolCard {...props('mystery', denied)} />)
+    const view = render(<GenericToolCard {...props('mystery', denied)}
+      getFileTriggerProps={() => ({})} />)
     expect(view.getByText('Auto review 已拒绝')).toBeTruthy()
     fireEvent.click(view.getByRole('button'))
     expect(view.getByText('工具未执行。原因：scope was not authorized')).toBeTruthy()
diff --git a/packages/client/ui-tool/tests/toolview-slot.client.spec.tsx b/packages/client/ui-tool/tests/toolview-slot.client.spec.tsx
index f294d6a261..39b4375567 100644
--- a/packages/client/ui-tool/tests/toolview-slot.client.spec.tsx
+++ b/packages/client/ui-tool/tests/toolview-slot.client.spec.tsx
@@ -1,8 +1,9 @@
 // @vitest-environment jsdom
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
-import { cleanup, fireEvent } from '@testing-library/react'
+import { cleanup, fireEvent, render } from '@testing-library/react'
 import type { ISession } from '@deepseek-ai/dsh-api-session-controller/client'
 import type { SessionId } from '@deepseek-ai/dsh-session/types'
 import type { WorkspaceId } from '@deepseek-ai/dsh-workspace/types'
@@ -10,7 +11,11 @@ import {
   apply as applyChat, inject as injectChat, type ToolResultNode,
 } from '@deepseek-ai/dsh-client-ui-chat/client'
 import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
-import { SlotTestRuntime, stubConfigForm } from '@deepseek-ai/dsh-client-test-runtime'
+import { SlotTestRuntime, contextMenuHook, stubConfigForm } from '@deepseek-ai/dsh-client-test-runtime'
+import { toolFileInject } from '../src/client/tool/file-menu.ts'
+import { ReadRow } from '../src/client/tool/toolviews/read-row.tsx'
+import { WebRow } from '../src/client/tool/toolviews/web-row.tsx'
+import { useDisclosure } from '@deepseek-ai/dsh-client-ui-chat/src/client/chat/use-disclosure.ts'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
 import { apply as applyConversation, inject as injectConversation } from '@deepseek-ai/dsh-client-ui-conversation/client'
 import { apply as applyTool, inject as injectTool } from '@deepseek-ai/dsh-client-ui-tool/client'
@@ -94,6 +99,8 @@ async function bench(nodes: ToolResultNode[]) {
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
   runtime.slots.installLocale(locale)
+  runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   await runtime.sessions.add({
     id: SID,
     summary: { title: 'S', displayTitle: 'S', cwd: '/w' },
@@ -112,6 +119,42 @@ async function bench(nodes: ToolResultNode[]) {
 }
 
 describe('keyed toolview hole through the real machinery', () => {
+  it('uses toolview Slot capabilities without a Markdown provider and resolves paths at the gesture', async () => {
+    const b = await bench([])
+    try {
+      const opened = vi.spyOn(b.runtime.ctx.contextMenus, 'open')
+      const block = toolResult(3, 'read-file', 'read', '{"file_path":"src/a.ts","offset":42}')
+      const fileEntry = b.runtime.slots.entries('tool.call.toolview').find(entry => entry.options.key === 'read')!
+      const resolveFilePath = fileEntry.inject!(SID as never).resolveFilePath as (path: string) => string
+      const props = {
+        sessionId: SID, toolName: 'read', callId: block.callId, phase: 'result', block, useDisclosure,
+        useContextMenu: contextMenuHook((target, point) => { b.runtime.ctx.contextMenus.open(target, point) }),
+        resolveFilePath, openFile: vi.fn(), t: b.runtime.ctx.locale.bind('conversation'),
+      } as Parameters<typeof ReadRow>[0]
+      const view = render(<ReadRow {...props} />)
+      await b.runtime.sessions.setProjection(SID, 'workingDirectory', '/w/moved')
+      const file = view.getByRole('button', { name: 'src/a.ts' })
+      fireEvent.contextMenu(file, { clientX: 12, clientY: 34 })
+      expect(opened).toHaveBeenLastCalledWith({ kind: 'file', value: { sessionId: SID, path: '/w/moved/src/a.ts', line: 42 } }, { x: 12, y: 34 })
+      await b.runtime.sessions.setProjection(SID, 'workingDirectory', null)
+      fireEvent.keyDown(file, { key: 'F10', shiftKey: true })
+      expect(opened).toHaveBeenLastCalledWith({ kind: 'file', value: { sessionId: SID, path: '/w/src/a.ts', line: 42 } }, { x: 0, y: 0 })
+      expect(props.openFile).not.toHaveBeenCalled()
+      expect(view.container.querySelector('[aria-expanded="true"]')).toBeNull()
+      view.rerender(<WebRow {...props} phase="result" toolName="web_fetch" block={toolResult(4, 'url', 'web_fetch', '{"url":"https://example.com/file"}')} />)
+      const url = view.getByRole('link')
+      fireEvent.contextMenu(url, { clientX: 56, clientY: 78 })
+      fireEvent.keyDown(url, { key: 'F10', shiftKey: true })
+      expect(opened).toHaveBeenLastCalledWith({ kind: 'url', value: { sessionId: SID, url: 'https://example.com/file' } }, { x: 0, y: 0 })
+      expect(opened).toHaveBeenCalledTimes(4)
+      expect(view.container.querySelector('[aria-expanded="true"]')).toBeNull()
+      const absent = toolFileInject(b.runtime.ctx)('missing' as SessionId)
+      expect(absent.resolveFilePath('file.ts')).toBe('file.ts')
+    } finally {
+      await b.runtime.dispose()
+    }
+  })
+
   it('dispatches registered rows by entryKey and unregistered tools to the GenericToolCard fallback', async () => {
     const b = await bench([
       toolResult(3, 'c1', 'bash'),
@@ -315,6 +358,8 @@ describe('registrant declaration injection', () => {
     const locale = new LocaleRuntime(runtime.ctx)
     runtime.ctx.provide('locale', locale)
     runtime.slots.installLocale(locale)
+    runtime.ctx.provide('shortcuts', { catalog: createSnapshotStore([]) })
+    await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
     await runtime.root.declare(LAYOUT_CHILDREN, AppRoot)
 
     // Third-party posture, mounted BEFORE ui-conversation. Plugin apply runs,
diff --git a/packages/client/ui-tool/tests/web-card.client.spec.tsx b/packages/client/ui-tool/tests/web-card.client.spec.tsx
index 19fada291b..9ec915030d 100644
--- a/packages/client/ui-tool/tests/web-card.client.spec.tsx
+++ b/packages/client/ui-tool/tests/web-card.client.spec.tsx
@@ -9,7 +9,7 @@ import { IconGlobeOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
 import { webCardModel, webFetchHref } from '../src/client/tool/models/web-card-model.ts'
 import { GenericToolCard } from '../src/client/tool/toolviews/GenericToolCard.tsx'
 import { WebRow, webToolview } from '../src/client/tool/toolviews/web-row.tsx'
-import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { contextMenuHook, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
 import { zh } from '@deepseek-ai/dsh-client-ui-conversation/src/client/locales.ts'
 import { PartialArguments } from '@deepseek-ai/dsh-util-values'
@@ -166,7 +166,7 @@ describe('chat row web body', () => {
 
   it('the WebRow collapses to the summary row, expanding to the full search card', () => {
     const globe = render(<IconGlobeOutlineRegular />).container.querySelector('svg')!.outerHTML
-    const view = render(<WebRow {...rowProps(settledSearch(), 'web_search')} />)
+    const view = render(<WebRow {...rowProps(settledSearch(), 'web_search')} useContextMenu={contextMenuHook()} />)
     // Collapsed: the summary row alone, no card in the DOM.
     expect(view.getByText('网页搜索')).toBeTruthy()
     expect(view.container.querySelector('svg')?.outerHTML).toBe(globe)
@@ -181,7 +181,7 @@ describe('chat row web body', () => {
   })
 
   it('the WebRow expands to the fetch card, titled Fetch', () => {
-    const view = render(<WebRow {...rowProps(settledFetch(), 'web_fetch')} />)
+    const view = render(<WebRow {...rowProps(settledFetch(), 'web_fetch')} useContextMenu={contextMenuHook()} />)
     expect(view.getByText('网页获取')).toBeTruthy()
     expect(view.container.querySelector('[data-web]')).toBeNull()
     toggleRow(view)
@@ -192,7 +192,7 @@ describe('chat row web body', () => {
   })
 
   it('the collapsed WebRow summary opens the fetch URL in a new tab without expanding', () => {
-    const view = render(<WebRow {...rowProps(settledFetch(), 'web_fetch')} />)
+    const view = render(<WebRow {...rowProps(settledFetch(), 'web_fetch')} useContextMenu={contextMenuHook()} />)
     const link = view.getByRole('link', { name: 'https://example.com/page' })
     expect(link.getAttribute('href')).toBe('https://example.com/page')
     expect(link.getAttribute('target')).toBe('_blank')
@@ -205,12 +205,12 @@ describe('chat row web body', () => {
   })
 
   it('a failed web fetch keeps its plain error summary', () => {
-    const view = render(<WebRow {...rowProps(settledFetch({ isError: true }), 'web_fetch')} />)
+    const view = render(<WebRow {...rowProps(settledFetch({ isError: true }), 'web_fetch')} useContextMenu={contextMenuHook()} />)
     expect(view.queryByRole('link')).toBeNull()
   })
 
   it('a running web call is the summary row alone, with nothing to expand', () => {
-    const view = render(<WebRow {...rowProps(runningSearch(), 'web_search')} />)
+    const view = render(<WebRow {...rowProps(runningSearch(), 'web_search')} useContextMenu={contextMenuHook()} />)
     expect(view.getByText('网页搜索')).toBeTruthy()
     expect(view.queryByText('Titled')).toBeNull()
     // No card material and no expandable body: clicking the row reveals nothing.
@@ -221,7 +221,7 @@ describe('chat row web body', () => {
   it('a failed web call keeps the summary row without the card', () => {
     const view = render(<WebRow {...rowProps(settledSearch({
       isError: true,
-    }), 'web_search')} />)
+    }), 'web_search')} useContextMenu={contextMenuHook()} />)
     expect(view.getByText('网页搜索')).toBeTruthy()
     expect(view.container.querySelector('[data-web]')).toBeNull()
     // The row reflects the error state so the summary line still reads as failed.
@@ -232,7 +232,8 @@ describe('chat row web body', () => {
   it('the GenericToolCard fallback does not promote an unknown tool from metadata alone', () => {
     const view = render(<GenericToolCard {...ownerProps(settledSearch({
       call: { name: 'fx-web', argsRaw: SEARCH_ARGS },
-    }), 'fx-web')} t={t} />)
+    }), 'fx-web')} t={t}
+    getFileTriggerProps={() => ({})} />)
     toggleRow(view)
     expect(view.container.querySelector('[data-web]')).toBeNull()
     expect(view.getByText('search text')).toBeTruthy()
@@ -242,7 +243,8 @@ describe('chat row web body', () => {
     const view = render(<GenericToolCard {...ownerProps(settledSearch({
       call: { name: 'echo', argsRaw: '{}' },
       meta: undefined,
-    }), 'echo')} t={t} />)
+    }), 'echo')} t={t}
+    getFileTriggerProps={() => ({})} />)
     expect(view.container.querySelector('[data-web]')).toBeNull()
   })
 })
diff --git a/packages/client/ui-trajectory/package.json b/packages/client/ui-trajectory/package.json
index b1e57ea6f7..b624defc20 100644
--- a/packages/client/ui-trajectory/package.json
+++ b/packages/client/ui-trajectory/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-trajectory",
   "description": "Trajectory event ledger and timing overview with live tool-result inspection",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-trajectory/tests/views.client.spec.tsx b/packages/client/ui-trajectory/tests/views.client.spec.tsx
index c233d3315a..fe37967176 100644
--- a/packages/client/ui-trajectory/tests/views.client.spec.tsx
+++ b/packages/client/ui-trajectory/tests/views.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * View registration acceptance on the real framework stack: the plugin fiber
  * registers Trajectory into a real SlotRegistry view ring, tabs
@@ -236,6 +237,7 @@ function standaloneProps(
     useSessionRetainInfo: () => undefined,
     useWorkspaces: emptyWorkspaces(),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useConversation: bindSnapshotSelector(createSnapshotStore(conversationSnapshot(trajectory))),
     useInput: bindSnapshotSelector(input),
     inputActions,
@@ -375,6 +377,7 @@ function mount(fixture: Awaited<ReturnType<typeof bench>>) {
     useSessionRetainInfo: () => undefined,
     useWorkspaces,
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useProjection,
     useInput,
     inputActions,
diff --git a/packages/client/ui-user-questions/package.json b/packages/client/ui-user-questions/package.json
index 55dc1d036a..453c4137df 100644
--- a/packages/client/ui-user-questions/package.json
+++ b/packages/client/ui-user-questions/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-user-questions",
   "description": "Web ask_user_question composer takeover and plan-review presentation UI",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-user-questions/tests/QuestionReplyView.client.spec.tsx b/packages/client/ui-user-questions/tests/QuestionReplyView.client.spec.tsx
index ea2625a912..08c17eed88 100644
--- a/packages/client/ui-user-questions/tests/QuestionReplyView.client.spec.tsx
+++ b/packages/client/ui-user-questions/tests/QuestionReplyView.client.spec.tsx
@@ -26,7 +26,6 @@ function renderView(data: QuestionReplyData) {
     inspectCall: vi.fn(),
     forkAt: vi.fn(),
     loadImage: vi.fn(() => Promise.reject(new Error('not used'))),
-    fileMentions: vi.fn(),
     useDisclosure,
     useTurnData: () => undefined,
     t,
diff --git a/packages/client/ui-user-questions/tests/plan-review-panel.client.spec.tsx b/packages/client/ui-user-questions/tests/plan-review-panel.client.spec.tsx
index 889d1e415e..41e0e6902f 100644
--- a/packages/client/ui-user-questions/tests/plan-review-panel.client.spec.tsx
+++ b/packages/client/ui-user-questions/tests/plan-review-panel.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { cleanup, fireEvent, render, screen } from '@testing-library/react'
@@ -125,6 +126,7 @@ const kit: Omit<QuestionComposerProps, 'matched'> = {
   useSessionRetainInfo: () => undefined,
   useWorkspaces: selector => selector(workspaceState),
   ...allowAllAccess,
+  useContextMenu: contextMenuHook(),
   useConversation: selector => selector(conversationState),
   useChat: selector => selector(chatState),
   useTrajectory: selector => selector(trajectoryState),
diff --git a/packages/client/ui-user-questions/tests/user-questions-composer.client.spec.tsx b/packages/client/ui-user-questions/tests/user-questions-composer.client.spec.tsx
index bdb8ce927a..b3fdffda6b 100644
--- a/packages/client/ui-user-questions/tests/user-questions-composer.client.spec.tsx
+++ b/packages/client/ui-user-questions/tests/user-questions-composer.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { useSyncExternalStore } from 'react'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
@@ -125,7 +126,9 @@ const kitBase: Omit<QuestionComposerProps, 'matched' | 'useStore' | 'useQuestion
   pendingInteraction: undefined,
   useSession: selector => selector(sessionState),
   useSessions: selector => selector(sessionList),
-  usePanelInfo, useResource,
+  usePanelInfo,
+  useContextMenu: contextMenuHook(),
+  useResource,
   useSessionStatus: selector => selector(attentionState),
   useSessionRetainInfo: () => undefined,
   useWorkspaces: selector => selector(workspaceState),
diff --git a/packages/client/ui-workflow-run/package.json b/packages/client/ui-workflow-run/package.json
index b97b37f5e3..4a1c4d8bde 100644
--- a/packages/client/ui-workflow-run/package.json
+++ b/packages/client/ui-workflow-run/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-workflow-run",
   "description": "Durable workflow-run Conversation Node and nested member disclosure for dsh web",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/ui-workflow-run/tests/workflow-run.client.spec.tsx b/packages/client/ui-workflow-run/tests/workflow-run.client.spec.tsx
index dbd2c096ee..9ba88045d8 100644
--- a/packages/client/ui-workflow-run/tests/workflow-run.client.spec.tsx
+++ b/packages/client/ui-workflow-run/tests/workflow-run.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { Context } from '@deepseek-ai/cordis'
@@ -362,6 +363,7 @@ function panelProps(data: WorkflowRunChatData, sessions = listState(), openSessi
     },
     useWorkspaces: selector => selector(panelWorkspace),
     ...allowAllAccess,
+    useContextMenu: contextMenuHook(),
     useTurnData: () => undefined,
     useDisclosure: () => { throw new Error('unused') },
     useGroupAction: () => { throw new Error('unused') },
@@ -369,7 +371,6 @@ function panelProps(data: WorkflowRunChatData, sessions = listState(), openSessi
     inspectCall: () => {},
     forkAt: () => {},
     loadImage: () => Promise.reject(new Error('not used')),
-    fileMentions: () => undefined,
     openSession,
     t: makeTranslate(zh),
   }
diff --git a/packages/client/ui-workspace/README.i18n.yaml b/packages/client/ui-workspace/README.i18n.yaml
index 2f63a27b97..6cdd5b79c3 100644
--- a/packages/client/ui-workspace/README.i18n.yaml
+++ b/packages/client/ui-workspace/README.i18n.yaml
@@ -15,35 +15,35 @@
   en: d152484eb41ac6b4
   zh: 09388d293f9be9cb
 /deepseek-ai-dsh-client-ui-workspace/use-this-package:
-  en: 650a0b951c92626e
-  zh: 8b059c0678656a79
+  en: 9226c42c2559fbf0
+  zh: 5527f59aa379c9fd
 /deepseek-ai-dsh-client-ui-workspace/use-this-package/reordering-and-view-options:
   en: 55054408b8593c70
   zh: 9fdf9861a48abba3
 /deepseek-ai-dsh-client-ui-workspace/use-this-package/workspace-hierarchy:
-  en: a94394a5a9f70ed8
-  zh: 62ce596a95395ad8
+  en: cd8635fa6516441d
+  zh: c06e251fe3dd895b
 /deepseek-ai-dsh-client-ui-workspace/use-this-package/search:
-  en: 60d1486f5309a338
-  zh: c16261d4dd6200de
+  en: 148f2ab562fecc09
+  zh: 9ba7c07999705b31
 /deepseek-ai-dsh-client-ui-workspace/use-this-package/managing-sessions:
-  en: 353ed9b66fab6486
-  zh: e38a4a37627a9426
+  en: 29b6b357fc6be99a
+  zh: 182996efed35029c
 /deepseek-ai-dsh-client-ui-workspace/use-this-package/pending-interactions:
   en: 9fb88260380bf093
   zh: 3bace2b96ecd4a82
 /deepseek-ai-dsh-client-ui-workspace/use-this-package/active-schedule-markers:
-  en: 2168316f604893a5
-  zh: fe11347009339a9a
+  en: cb2dea9fe7e3b060
+  zh: f8d65c3920ff2cff
 /deepseek-ai-dsh-client-ui-workspace/understand-the-implementation:
-  en: 298c0358edd2d7ef
-  zh: 4d4c4a6be3e70434
+  en: e14859b6f1043860
+  zh: 7cd95796084b2158
 /deepseek-ai-dsh-client-ui-workspace/understand-the-implementation/the-directory-flow-hole:
   en: 868904dbfb5713f8
-  zh: 225906bfef7398bf
+  zh: 35d3c285ed770885
 /deepseek-ai-dsh-client-ui-workspace/understand-the-implementation/session-row-actions:
-  en: 5bbba6e462faf3dc
-  zh: 4734263208ee07c9
+  en: 511408e373ff8c70
+  zh: 7ae3b396171821a4
 /deepseek-ai-dsh-client-ui-workspace/understand-the-implementation/session-row-actions/packaged-client-plugin:
   en: 36934671b80b11ae
   zh: 8e0aea6162e35e77
diff --git a/packages/client/ui-workspace/README.md b/packages/client/ui-workspace/README.md
index ce78cd13d6..625fdb7d6c 100644
--- a/packages/client/ui-workspace/README.md
+++ b/packages/client/ui-workspace/README.md
@@ -31,6 +31,8 @@ Use the sidebar to browse Workspaces and their Sessions, reorder them, and start
 
 History rows without a stored title use the localized unnamed label (未命名 / Untitled), rather than a directory name. The current blank row remains New Session; other blank rows remain hidden. Rename drafts use the stored title, or start empty when unnamed; unnamed rows do not offer title copying.
 
+Without hover, Workspace actions appear only while expanded, Session More buttons stay visible, and search-result actions remain visible. Toolbar tooltips render outside the sidebar so its drawer animation does not crop them. Search and rename inputs use 16px text with a coarse pointer; a fine pointer keeps their compact sizes.
+
 ### Reordering and view options
 
 Pinned Sessions lead ordinary Sessions in both grouped and flat views. **Last updated** sorts each partition strictly by the latest user prompt or steer time, newest first; pin time does not affect it. **Manual** uses the relative positions in one complete Session sequence, including hidden archives. Returning to Last updated discards the manual layout, and entering Manual again freezes the then-current chronological order. The browser defaults to Last updated and remembers the selected mode across reloads.
@@ -45,23 +47,27 @@ Choose **Add workspace** and select a directory to register it and open a Sessio
 
 Hierarchy uses registered canonical paths only. It does not scan for projects or resolve symlink aliases. Nesting does not change Session working directories, logs, or Workspace membership. Deleting a parent Workspace leaves its child Workspaces registered and places them under their next registered ancestor, or at the root.
 
-On devices without hover, Workspace rows keep their menu and New Session controls visible, and archived search results keep the Unarchive control visible.
+On devices without hover, expanded Workspace rows keep their menu and New Session controls visible, and archived search results keep the Unarchive control visible.
 
 ### Search
 
+The search shortcut expands a closed sidebar, including a drawer that retains its wide content, before focusing the search field.
+
 Collapsed search is one header action beside the view and add actions: activating it expands the field across the header. Opening or closing search in the expanded sidebar animates header spacing and field expansion together over 180 ms, disabled for reduced motion. Expanding the sidebar from its rail places the header at its final geometry while preserving the content fade-in. Rail search prepares the open field before expanding the sidebar, so the first wide render already contains the expanded field. Search titles leave space before the Unarchive click target even when truncated. A non-blank query replaces either browsing mode with one flat result list — case-insensitive title, Workspace, and Session id substring matches appear immediately, while a 250 ms debounced Host request adds ranked current-conversation content matches and snippets. Each new query aborts the preceding request; a failed content search leaves metadata matches visible without an additional warning. The list is capped at 20. Choosing an unarchived result clears and collapses search, opens the Session, and scrolls its row into view in the configured browsing mode; grouped browsing also expands its Workspace and the full Session list when required. Archived results offer Unarchive; attempting to open one explains that restriction without clearing the query or navigating.
 
 ### Managing sessions
 
-The final built-in item in a Session row's "..." menu is Copy Session ID. It closes the menu and copies the complete ID directly, without opening a dialog. Clipboard success or failure appears in the global toast; a failed copy can be retried from the menu. Copying does not retain the Session, load its history, or call the Host.
+Session row actions appear on hover for devices that support hovering. Without hover, non-blank Sessions keep More visible alongside trailing status icons and pending-interaction labels; update times have no display entry. Pinned rows show Unpin before More with the same spacing as Workspace actions; rows without unpin permission retain the static pin marker. Pin and archive remain available in More. Workspace row actions appear only while expanded. An open row menu keeps its action strip visible on either device type.
 
-The Session row's Rename action opens a dialog prefilled with the row's display title; confirming an unchanged title is deliberately allowed — it pins the current automatic title against regeneration. Double-clicking a title also opens Rename; for an unarchived Session, the preceding clicks open its conversation. When the click that activates an unfocused window is not delivered to the page, as on macOS, the next click does not open Rename. Rename uses a temporary `workspaceOperation` reference and awaits its initial history opening. The row's Fork action reads ordinary cold history normally. When the Host reports that source migration is required, an app-wide Toast offers to open that Session; the action only navigates and does not retry fork. A successful fork uses the source's last completed turn and increments the inherited persisted title through Session Controller without retaining the child, opening its history, or changing selection. Workspace Delete opens a confirmation that states the retention boundary; success removes the group while its Sessions remain under Ungrouped. Pin, Rename, Fork, Archive, and Copy Session ID are themselves entries of the `sidebar.workspaces.session.menu.item` list (pin and archive also of `sidebar.workspaces.session.row.action`), so a client plugin's action takes whatever position its `order` gives it.
+The Copy Session ID item is in the identification group of a Session row's "..." menu. It closes the menu and copies the complete ID directly, without opening a dialog. Clipboard success or failure appears in the global toast; a failed copy can be retried from the menu. Copying does not retain the Session, load its history, or call the Host.
+
+The Session row's Rename action opens a dialog prefilled with the row's display title; confirming an unchanged title is deliberately allowed — it pins the current automatic title against regeneration. Double-clicking a title also opens Rename; for an unarchived Session, the preceding clicks open its conversation. When the click that activates an unfocused window is not delivered to the page, as on macOS, the next click does not open Rename. Rename uses a temporary `workspaceOperation` reference and awaits its initial history opening. The row's Fork action reads ordinary cold history normally. When the Host reports that source migration is required, an app-wide Toast offers to open that Session; the action only navigates and does not retry fork. A successful fork uses the source's last completed turn and increments the inherited persisted title through Session Controller without retaining the child, opening its history, or changing selection. Workspace Delete opens a confirmation that states the retention boundary; success removes the group while its Sessions remain under Ungrouped. Built-in menus use structured contributions; see [Session row actions](#session-row-actions).
 
 Archive commits without a confirmation dialog for a quiet Session and retains the Session's account position. A Session with running work is the one case that asks first: the Host refuses the plain archive and names that work, and the sidebar opens a stop-and-archive dialog listing it by family — the turn in progress, running subagents, background jobs, scheduled reminders, each with its labels — with the restore path stated; confirming asks the Host to stop the work the way the stop button does and archives once the archive set is durable, while the stops settle in the background, and cancelling leaves the Session running and visible. View options control visibility through one explicit three-way choice: Hide archived (the default) hides archived Sessions, All conversations (show archived) includes them, and Archived only hides ordinary Sessions and drops Workspaces without an archived Session; in tree grouping, children of a dropped Workspace nest under the nearest shown ancestor. Visible archived rows are grayed and carry an accessible explanation that they cannot be opened until restored; Rename, Fork, and Unarchive remain available. A successful archive shows a notice with an undo action and — while archived rows are hidden — a "filter archived sessions" action that switches the filter to All conversations (show archived); a stop-and-archive shows the same notice under its own wording, and undo restores the Session without resuming the stopped work. Unarchive removes the archive mark without restoring a pin or changing the saved position. An empty list shows a centered glyph-over-text placeholder; the Archived-only view names its own emptiness (No archived sessions yet) and adds a View other sessions text action that switches the filter back to Hide archived.
 
 Session update times use the tertiary label color, including on archived rows. A Session title wider than its row is clipped with an ellipsis at rest. Hovering the row scrolls the title to its far edge — the incremented title of a fork, for example — and reveals it without the ellipsis; leaving the row returns the title to its start.
 
-The keyboard reference exposes New Session, Search sessions, Add workspace, Rename session, Fork session, and Archive session. Desktop defaults use the platform's primary modifier, with Mod+K for search; Windows and macOS Web use the [shortcut service’s platform defaults](../shortcuts/README.md); Linux Web leaves these commands unbound until configured. Button tooltips and Session row menus display the effective bindings. Clicking a menu item targets that row; pressing its shortcut targets the main Session. Desktop and Windows/macOS Web rename use Mod+Alt+G, leaving Mod+Shift+R to browser reload. Rename requires a nonblank main Conversation with no modal obscuring it; a retained Session behind another main panel is unavailable. Other Windows and macOS Desktop bindings also execute from terminal input and modal dialogs; other environments follow the command's region and modal restrictions. Search and rename requests belong to this package; input drafts remain in the browser. The directory picker rejects another open while selection or Workspace adoption is pending. Fork captures the retained main-view Session, for which navigation has requested history opening, and keeps automatic migration. It uses the row action's Host operation to select its last completed turn, without loading older Client history. Missing or blank Sessions are unavailable; the Host rejects a source with no completed turn. A rejected shortcut fork preserves the current selection, displays a localized notification, and can be retried; unexpected failures also retain diagnostic logging. Its notification shares the frame-wide Workspace notice channel: only the latest notice remains visible, and removing the browsing region does not dismiss it.
+The keyboard reference exposes New Session, Search sessions, Add workspace, Rename session, Fork session, and Archive session. Desktop defaults use the platform's primary modifier, with Mod+K for search; Windows and macOS Web use the [shortcut service’s platform defaults](../shortcuts/README.md); Linux Web leaves these commands unbound until configured. Button tooltips and Session row menus display the effective bindings. Clicking a menu item targets that row; pressing its shortcut targets the main Session. Desktop and Windows/macOS Web rename use Mod+Alt+G, leaving Mod+Shift+R to browser reload. The navigation drawer allows these commands; other dialogs follow the command’s modal restrictions. Rename requires a nonblank main Conversation with no other modal obscuring it; a retained Session behind another main panel is unavailable. Other Windows and macOS Desktop bindings also execute from terminal input and modal dialogs; other environments follow the command's region and modal restrictions. Search and rename requests belong to this package; input drafts remain in the browser. The directory picker rejects another open while selection or Workspace adoption is pending. Fork captures the retained main-view Session, for which navigation has requested history opening, and keeps automatic migration. It uses the row action's Host operation to select its last completed turn, without loading older Client history. Missing or blank Sessions are unavailable; the Host rejects a source with no completed turn. A rejected shortcut fork preserves the current selection, displays a localized notification, and can be retried; unexpected failures also retain diagnostic logging. Its notification shares the frame-wide Workspace notice channel: only the latest notice remains visible, and removing the browsing region does not dismiss it.
 
 ### Pending interactions
 
@@ -71,6 +77,10 @@ Session rows render the runtime's live `pendingInteraction` classification: appr
 
 Grouped and flat Session rows show a clock mark when the Session has active scheduled tasks. It is an occupant of the row's `sidebar.session.row.leading` seat, so it renders only on a row whose primary status is idle and never beside the row's own status dot; an archived row keeps that cell blank, and a search result has no leading seat and shows no mark. It is not a button, has no tab stop, and a press on its area does not open the row. The mark's own read and the meaning of its active-task condition belong to [ui-schedule](../ui-schedule/README.md).
 
+Workspace headers share one `workspace` context-menu target between right-click and the ellipsis. Rename and Delete use the existing confirmation dialogs and recheck Workspace existence and access before opening; native directory reveal is contributed by [ui-open-in-app](../ui-open-in-app/README.md). The menu remains available for native and plugin actions when mutation permissions are absent. Opening it changes neither expansion nor Session selection.
+
+Session rows share their existing action contributions between right-click and the ellipsis trigger through [ui-context-menu](../ui-context-menu/README.md). The captured Session stays the target without changing selection; `sidebar.workspaces.session.menu.item` remains the component extension position. The shipped groups are Pin, Rename, Fork; Copy session ID and the optional native directory reveal; then Archive, with separators before Copy session ID and Archive.
+
 -----
 
 `ctx.uiWorkspace.openSession(target)` synchronously replaces the owned `mainView` reference and returns the main area to Conversation without waiting for `reference.ready`, so history loading renders inside the selected Session view. The target may be a known Session id or a durable direct-parent subagent address; an explicit address does not require a preloaded parent catalog. `openWorkspace(id, beforeOpen?, options?)` opens a Workspace blank only if no later navigation has superseded the request; New Session opens the same blank as Workspace reopening, so it returns to that blank's unsent draft. `forkSession(id, onCreated?, options?)` creates the child without navigating or superseding a pending navigation; `allowMigration` carries the caller's migration permission. The optional synchronous preparation callback runs after the target is retained and only for a current Workspace request, so superseded requests do not move composer drafts. Navigation or owner disposal suppresses the late UI commit, not the underlying Session creation.
@@ -101,8 +111,6 @@ The leading seat occupies the status cell only while the row's primary status is
 
 On hover-capable devices, hovering a Session row, giving keyboard focus to the row or its actions, or opening its menu replaces the time, trailing icons, and pin marker with action buttons. A pointer click does not keep the buttons visible after the pointer leaves. Built-in Session and Workspace row action buttons use 24px click targets with compensated margins that retain their compact layout footprint and icon positions.
 
-Hoverless devices keep the static details and the More menu trigger visible, including while the menu is open; pin and archive remain available in that menu.
-
 Session rows accept Tab focus and open with unmodified Enter or Space; Tab also reaches their action buttons, while modified keys remain available to global shortcuts.
 
 Client callers can pass `prompt`, `whenDraftExists`, and `clearPreviousDraft` in the second argument to `uiWorkspace.startSession`. A prompt is plain text; structured drafts are handled internally during restoration and Workspace transfer. An empty draft adopts the prompt. When the target already has text or attachments, `whenDraftExists: 'keep'` (the default) preserves them, `'replace'` replaces only the target Session's text and inline references with the prompt or clears them without one, and `'append'` adds the prompt as new paragraphs after the existing text; attachments stay in every case. `clearPreviousDraft: true` acts as `'replace'` only when `whenDraftExists` is omitted. Option values are captured before asynchronous creation and applied to the exact retained binding before navigation commits. Superseded navigation does not write content; a submission-blocked input refuses preparation and keeps the previous selection. Calls with or without options open the blank Session chosen as described above, so New Session returns to its unsent draft. The [draft initialization decision](../../../.agents/notes/implemented/architecture/2026-09-30-structured-draft-initialization.md) describes the input owner's data flow.
@@ -113,9 +121,9 @@ Each registration declares a **directory-flow child hole** (`single` kind: `conv
 
 ### Session row actions
 
-The Session row's "..." menu and its hover buttons are two `list` slots declared by the WorkspaceBrowser entry: `sidebar.workspaces.session.menu.item` and `sidebar.workspaces.session.row.action`. Every menu row and every hover button is an entry, this package's own actions included: `apply` registers `pin` (menu 100, button 200), `rename` (200), `fork` (300), `archive` (menu 400, button 100), and `session-id` (450) the way a client plugin registers its actions, so a plugin action lands wherever its `order` says, and reusing a shipped id at another `priority` shadows that action.
+Built-in Session menu actions register structured contributions through `ctx.contextMenus`: pin (100), rename (200), fork (300), copy ID (450), and archive (600). Native directory reveal belongs to ui-open-in-app (500). Rename, fork, and archive associate existing command IDs for live shortcut display; clicks retain their captured Session and invoke the existing business callback. Pin and archive also retain their hover-button Slot entries.
 
-An entry receives only the row identity (`sessionId`, `displayTitle`) and owns everything else. It reads the Host state it cares about through its own injected hooks (the pin and archive sets, as Sets derived once per Workspace snapshot), decides its own visibility (pin renders nothing on an archived row, because the Host keeps the two sets exclusive, and fork renders nothing when `useSessionAccess(sessionId, 'session/fork')` is false), carries its whole behavior in its registration's `inject` face (a pin also fronts the Session in its saved orders; an archive raises the notice), and raises its own surfaces: the rename dialog, the stop-and-archive dialog, and the row-action notice are this package's `shell.overlay` entries, fed by the requests the actions inject. A menu entry renders one `role="menuitem"` button (this package's rows use `MenuItemButton` from ui-primitives, which adds the host styling and `separatorBefore` for a group start; the hairline comes and goes with the row) and dismisses the menu through the slot-level `useMenuOpenState` hook, the menu's own open state bound from the row's render occurrence; a hover button entry renders one icon button, and the strip keeps its clicks from opening the row. The browser passes no action callbacks to its rows; its remaining verbs are the search results' restore button and the title double-click, which raises the same rename request.
+The legacy `sidebar.workspaces.session.menu.item` Slot remains for external React entries. It receives `sessionId`, `displayTitle`, and `useMenuOpenState` for dismissal. Legacy entries retain their own order and render together before Archive; their priority no longer replaces built-in data actions. New contributions use the [menu service](../ui-context-menu/README.md). Built-in visibility tracks permissions and pin/archive membership while open; dialogs and notices remain frame-wide overlays.
 
 The existing notice overlay dispatches `workspace.toast` by notice kind. Keyed registrations inject localized display mappings and their own actions; only archive notices subscribe to the viewing filter. They render the package-local `workspace.toast.content` Factory, which reuses the Toast primitive once for all presentations. The existing notice state, display sequence, latest-notice replacement, and dismissal remain shared; locale or filter changes do not restart the same notice's timer.
 
diff --git a/packages/client/ui-workspace/README.zh.md b/packages/client/ui-workspace/README.zh.md
index f1966a60f5..567be2eee3 100644
--- a/packages/client/ui-workspace/README.zh.md
+++ b/packages/client/ui-workspace/README.zh.md
@@ -31,6 +31,8 @@ kind: "package-reference"
 
 未保存标题的历史会话显示本地化名称「未命名 / Untitled」，不使用目录名兜底。当前空会话仍显示「新会话」，其他空会话仍隐藏。重命名草稿使用已保存标题，无标题时留空；无标题行不提供标题复制。
 
+无 hover 时，工作区操作仅在展开时显示，会话的更多按钮始终显示，搜索结果操作保持可见。工具栏的提示气泡在侧边栏外渲染，避免被抽屉动画裁切。使用粗指针时，搜索和重命名输入框采用 16px 字号；精细指针下保留紧凑字号。
+
 ### 重排序与视图选项
 
 分组和平铺视图都先显示置顶 Session，再显示普通 Session。**最近更新**在各分区内严格按最近一次用户提示词或 steering（中途引导）时间降序排列，置顶时间不影响它。**手动排序**使用同一条完整 Session 序列中的相对位置，包括隐藏的归档项。返回最近更新会丢弃手动布局，再次进入手动排序时冻结当时的时间顺序。浏览器默认采用最近更新，并在重新加载后记住所选模式。
@@ -45,23 +47,27 @@ kind: "package-reference"
 
 层级仅使用已注册的规范路径，不扫描项目，也不解析符号链接别名。嵌套不会改变 Session 的工作目录、日志或 Workspace 归属。删除父 Workspace 后，子 Workspace 仍保持注册，并归入下一个已注册祖先；没有祖先时显示在根层级。
 
-在不支持悬停的设备上，Workspace 行始终显示菜单和新建会话按钮，已归档的搜索结果始终显示取消归档按钮。
+在不支持悬停的设备上，展开的 Workspace 行显示菜单和新建会话按钮，已归档的搜索结果始终显示取消归档按钮。
 
 ### 搜索
 
+搜索快捷键会先展开已关闭的侧栏，包括保留展开内容的抽屉，再聚焦搜索框。
+
 折叠搜索是视图和添加操作旁的一枚区头按钮：激活后输入框会扩展并占据区头。在展开的侧栏中打开或关闭搜索时，区头间距与输入框展开采用同步的 180 ms 过渡，减少动态效果模式下禁用。从折叠栏展开侧栏时，区头直接采用最终几何位置，同时保留内容淡入。折叠栏搜索会在展开侧栏前准备好输入框的打开状态，因此首个宽栏渲染就包含已展开的输入框。搜索标题即使被截断，也会在取消归档的点击区域前留出间距。非空白查询会以单一扁平结果列表替代任一浏览模式——不区分大小写的标题、Workspace 和 Session id 子串匹配项会立即显示，经 250 ms 防抖的 Host 请求则会加入经过排序的当前对话内容匹配项及其摘要片段。每次新查询都会中止前一个请求；内容搜索失败时，元数据匹配项仍会显示，不另给警告。列表最多显示 20 条结果。选择未归档结果会清空并收起搜索、打开 Session，并在当前浏览模式中将其行滚动到可见区域；分组浏览还会按需展开所属 Workspace 和完整 Session 列表。已归档结果提供取消归档操作；尝试打开时会说明限制，不清空查询，也不导航。
 
 ### 管理会话
 
-Session 行“...”菜单的最后一个内置项为“复制 Session ID”。点击后关闭菜单并直接复制完整 ID，不打开对话框。复制成功或失败通过全局提示反馈；失败时可从菜单重试。复制不会 retain 会话、加载历史或调用 Host。
+在支持悬停的设备上，悬停 Session 行会显示操作按钮。不支持悬停时，非空 Session 保留“更多”、尾部状态图标和等待交互的状态文字，不再提供更新时间的展示入口。已置顶行在“更多”前显示取消置顶按钮，间距与 Workspace 操作按钮一致；没有取消置顶权限时保留静态置顶标记。置顶与归档仍可从“更多”菜单进入。Workspace 行仅在展开时显示操作按钮。无论设备是否支持悬停，行菜单打开期间都会保持操作区可见。
 
-Session 行内的 Rename 操作打开一个以该行显示标题预填的对话框；确认未修改的标题是有意允许的——这正是把当前自动标题钉住、不再被重新生成覆盖的手势。双击标题也会打开 Rename；对于未归档 Session，先发生的点击会打开其对话。当激活未聚焦窗口的那次点击不会传递给页面时（如在 macOS 上），下一次点击不会打开 Rename。Rename 使用临时 `workspaceOperation` reference，并等待首次历史打开。行内 Fork 正常读取普通冷历史。Host 报告源会话需要迁移时，应用级 Toast 提供打开该会话的操作；该操作仅导航，不重试 fork。成功的 fork 在源会话最后一个已完成轮次处创建分支，通过 Session Controller 递增继承的持久化标题，不 retain 子会话、不打开其历史，也不改变选择。Workspace 行内的 Delete 操作会打开确认框，说明保留边界；成功后该分组被移除，其 Session 则留在 Ungrouped 下。Pin、Rename、Fork、Archive 和复制 Session ID 本身就是 `sidebar.workspaces.session.menu.item` 列表的条目（pin 与 archive 同时也是 `sidebar.workspaces.session.row.action` 的条目），因此客户端插件的 action 由其 `order` 决定落在哪个位置。
+“复制 Session ID”位于 Session 行“...”菜单的标识信息组。点击后关闭菜单并直接复制完整 ID，不打开对话框。复制成功或失败通过全局提示反馈；失败时可从菜单重试。复制不会 retain 会话、加载历史或调用 Host。
+
+Session 行内的 Rename 操作打开一个以该行显示标题预填的对话框；确认未修改的标题是有意允许的——这正是把当前自动标题钉住、不再被重新生成覆盖的手势。双击标题也会打开 Rename；对于未归档 Session，先发生的点击会打开其对话。当激活未聚焦窗口的那次点击不会传递给页面时（如在 macOS 上），下一次点击不会打开 Rename。Rename 使用临时 `workspaceOperation` reference，并等待首次历史打开。行内 Fork 正常读取普通冷历史。Host 报告源会话需要迁移时，应用级 Toast 提供打开该会话的操作；该操作仅导航，不重试 fork。成功的 fork 在源会话最后一个已完成轮次处创建分支，通过 Session Controller 递增继承的持久化标题，不 retain 子会话、不打开其历史，也不改变选择。Workspace 行内的 Delete 操作会打开确认框，说明保留边界；成功后该分组被移除，其 Session 则留在 Ungrouped 下。内置菜单使用结构化贡献，参见 [Session 行动作](#session-row-actions)。
 
 对静止的 Session，Archive 不经确认对话框直接提交，并保留 Session 的记账位置。仍有工作在跑的 Session 是唯一会先询问的情形：Host 拒绝普通归档并列出这些工作，侧栏随即打开"停止并归档"对话框，按族列出——进行中的回合、运行中的子代理、后台任务、定时提醒，各带名称——并写明恢复路径；确认后请 Host 按停止按钮同样的方式停止这些工作，归档集合持久化后即完成归档，停止在后台收敛；取消则让 Session 继续运行并保持可见。视图选项以一组显式三选一控制显隐：隐藏已归档（默认项）隐藏已归档 Session，全部对话（显示已归档）将其纳入列表，仅显示已归档则隐藏普通 Session，并丢弃没有归档 Session 的 Workspace；树形分组下，被丢弃 Workspace 的子级挂到最近一个仍显示的祖先下。可见的归档行置灰，并提供无障碍说明，告知取消归档后才能打开；Rename、Fork 与取消归档仍然可用。归档成功后的提示提供"撤销"动作，并在归档行仍被隐藏时附带"筛选已归档会话"动作，后者直接把筛选切到全部对话（显示已归档）；停止并归档显示同样的提示但措辞不同，撤销只恢复 Session，不会让被停止的工作继续。取消归档移除归档标记，但不恢复置顶，也不改变保存的位置。列表为空时显示居中的"图标在上、文字在下"占位；仅显示已归档视图用自己的文案（暂无已归档会话），并附"查看其他会话"文字按钮，点击把筛选切回隐藏已归档。
 
 会话更新时间使用 tertiary 文本色，包括已归档行。标题宽于所在行时，静止状态以省略号裁切。把指针停在行上，标题会滚动到远端——例如 fork 递增后的标题——并在揭示时不显示省略号；指针离开后标题回到开头。
 
-快捷键速查提供新建会话、搜索会话、添加工作区、重命名会话、分叉会话和归档会话。桌面默认使用平台的主修饰键，搜索为 Mod+K；Windows 和 macOS Web 使用[快捷键服务的平台默认值](../shortcuts/README.zh.md)；Linux Web 在用户配置前不绑定这些命令。按钮提示和会话行菜单显示当前有效绑定。点击菜单项操作该行，按快捷键操作主会话。Desktop 和 Windows/macOS Web 的重命名均使用 Mod+Alt+G，将 Mod+Shift+R 留给浏览器刷新。重命名要求主区域正在显示非空会话，且没有模态对话框遮挡；切换到其他主面板后，后台保留的会话不可作为重命名目标。其他 Windows 和 macOS Desktop 绑定也可从终端输入区域和模态对话框中执行；其他环境遵循命令的区域和模态限制。搜索和重命名的打开请求归本包管理，输入草稿保留在浏览器中。目录选择或工作区接纳尚未结束时，目录选择器拒绝重复打开。分叉捕获主视图已持有并发起历史打开的会话，保留自动迁移；它使用与行菜单相同的 Host 操作选择最近已完成轮次，不读取更早的 Client 历史。没有会话或会话为空时不可用；没有已完成轮次的源会话由 Host 拒绝。快捷键分叉被拒绝时保留当前选择、显示本地化提示，并允许重试；非预期失败还会保留诊断日志。该提示共用应用级 Workspace 通知通道：只显示最新提示，移除浏览区域不会关闭它。
+快捷键速查提供新建会话、搜索会话、添加工作区、重命名会话、分叉会话和归档会话。桌面默认使用平台的主修饰键，搜索为 Mod+K；Windows 和 macOS Web 使用[快捷键服务的平台默认值](../shortcuts/README.zh.md)；Linux Web 在用户配置前不绑定这些命令。按钮提示和会话行菜单显示当前有效绑定。点击菜单项操作该行，按快捷键操作主会话。Desktop 和 Windows/macOS Web 的重命名均使用 Mod+Alt+G，将 Mod+Shift+R 留给浏览器刷新。导航抽屉允许这些命令，其他对话框遵循命令的模态限制。重命名要求主区域正在显示非空会话，且没有其他模态对话框遮挡；切换到其他主面板后，后台保留的会话不可作为重命名目标。其他 Windows 和 macOS Desktop 绑定也可从终端输入区域和模态对话框中执行；其他环境遵循命令的区域和模态限制。搜索和重命名的打开请求归本包管理，输入草稿保留在浏览器中。目录选择或工作区接纳尚未结束时，目录选择器拒绝重复打开。分叉捕获主视图已持有并发起历史打开的会话，保留自动迁移；它使用与行菜单相同的 Host 操作选择最近已完成轮次，不读取更早的 Client 历史。没有会话或会话为空时不可用；没有已完成轮次的源会话由 Host 拒绝。快捷键分叉被拒绝时保留当前选择、显示本地化提示，并允许重试；非预期失败还会保留诊断日志。该提示共用应用级 Workspace 通知通道：只显示最新提示，移除浏览区域不会关闭它。
 
 ### 待处理交互
 
@@ -71,6 +77,10 @@ Session 行渲染运行时的实时 `pendingInteraction` 分类：审批显示**
 
 当成组的与平铺的 Session 行所对应的 Session 存在活动定时任务时，该行显示时钟标记。它是行首 `sidebar.session.row.leading` seat 的占用方，因此仅在该行主状态为 idle 时渲染，绝不与行自身的状态点同时出现；归档行该格同样留空，搜索结果没有该 seat，也不显示标记。它不是按钮，没有 Tab stop，点击其所在区域不会打开整行。标记自身的读取及其「活动」条件的确切含义由 [ui-schedule](../ui-schedule/README.zh.md) 负责。
 
+工作区标题的右键和省略号共用 `workspace` 右键操作对象。重命名和删除沿用现有确认对话框，打开前再次检查工作区是否存在及操作权限；本机目录显示由 [ui-open-in-app](../ui-open-in-app/README.zh.md) 提供。没有修改权限时仍可使用本机和插件菜单操作。打开菜单不改变展开状态或选中的会话。
+
+会话行通过 [ui-context-menu](../ui-context-menu/README.zh.md) 在右键与省略号按钮间共享现有操作贡献。操作对象固定为被点击的会话，不改变选中状态；`sidebar.workspaces.session.menu.item` 仍是组件扩展位置。内置分组依次为置顶、重命名、分叉；复制 Session ID 和可选的本机目录显示；归档，复制 Session ID 与归档之前各有一条分割线。
+
 -----
 
 `ctx.uiWorkspace.openSession(target)` 会同步替换其拥有的 `mainView` reference，并让主区域返回 Conversation，而不等待 `reference.ready`，因此历史加载会显示在已经选中的 Session 视图内。目标可以是已知 Session id，也可以是持久的直接父子 subagent 地址；显式地址不要求预先加载 parent catalog。`openWorkspace(id, beforeOpen?, options?)` 仅在请求未被后续导航替代时打开工作区空白 Session；新会话与重新打开工作区打开同一个空白会话，因此会回到该空白会话中未发送的草稿。`forkSession(id, onCreated?, options?)` 创建子会话，不导航，也不替代尚未完成的导航；`allowMigration` 携带调用方的迁移许可。可选的同步准备回调在目标被 retain 后执行，并且仅对仍有效的 Workspace 请求执行，因此过期请求不会搬移 composer 草稿。后续导航或 owner 释放会阻止晚到的 UI 提交，但不取消底层 Session 创建。
@@ -101,8 +111,6 @@ Workspace 和 Session 的启动基线均就绪后，空安装环境调用 `works
 
 在支持悬停的设备上，鼠标移入 Session 行、通过键盘聚焦行或其操作按钮、打开行菜单，都会用操作按钮替代时间、尾部图标和置顶标记。鼠标点击不会让按钮在指针移出后仍然显示。内置 Session 和 Workspace 行操作按钮使用 24px 点击热区，通过补偿外边距保留紧凑的布局占位与图标位置。
 
-不支持悬停的设备始终保留静态信息和更多菜单入口，菜单打开时也不隐藏；置顶与归档仍可通过该菜单操作。
-
 Session 行可通过 Tab 聚焦，使用不带修饰键的 Enter 或空格打开；Tab 也可移到行内操作按钮，组合键则继续交由全局快捷键处理。
 
 客户端调用方可以在 `uiWorkspace.startSession` 的第二参数中传入 `prompt`、`whenDraftExists` 与 `clearPreviousDraft`。提示词仅接受普通文字；结构化草稿由内部恢复和工作区携带流程处理。空稿直接采用提示词。目标已有文字或附件时，`whenDraftExists: 'keep'`（默认）保留原稿，`'replace'` 只用提示词替换目标 Session 的文字和内联引用、无提示词时清空，`'append'` 在原有文字之后另起段落追加提示词；附件在各种情况下都保留。只有未传 `whenDraftExists` 时，`clearPreviousDraft: true` 才等同 `'replace'`。在异步创建前捕获选项值，在导航提交前应用到准确保留的 binding。已被后续操作取代的导航不写内容；输入处于提交阻塞状态时拒绝准备并保留原选择。无论是否传入选项，都按上文所述选择并打开空白 Session，因此新会话会回到其未发送的草稿。[草稿初始化决策](../../../.agents/notes/implemented/architecture/2026-09-30-structured-draft-initialization.zh.md)说明输入 owner 的数据流。
@@ -111,11 +119,12 @@ Session 行可通过 Tab 聚焦，使用不带修饰键的 Enter 或空格打开
 
 每个注册各自声明一个**目录流子 slot**（`single` kind：`conversation.hero.workspace.directoryFlow`／`sidebar.workspaces.directoryFlow`），由组合的选择器包 client half 填入其选取交互——`-native` 后端的无渲染 OS 选择器驱动，`-browse` 组合下则是应用内浏览对话框。平铺显示的**添加工作区…** 操作仅在当前界面的 slot 被占用时渲染；slot 为空意味着该组合没有目录选择能力。侧栏的添加工作区操作保留已有空白 Session 及其草稿。本包持有触发与接纳：占用方通过 slot 的属主交互约定（`open`/`busy`/`onPicked`/`onCancel`/`onError`）每次打开上报一个所选路径，owner 通过对象层接纳它，并等待 Workspace 列表投影刷新后才选中已提交的 Workspace。
 
+<a id="session-row-actions"></a>
 ### Session 行 action
 
-Session 行的 "..." 菜单和行尾悬停按钮是 WorkspaceBrowser 注册项声明的两个 `list` slot：`sidebar.workspaces.session.menu.item` 与 `sidebar.workspaces.session.row.action`。每一个菜单行、每一个悬停按钮都是条目，本包自己的 action 也不例外：`apply` 以客户端插件注册自己 action 的同一方式注册 `pin`（菜单 100、按钮 200）、`rename`（200）、`fork`（300）、`archive`（菜单 400、按钮 100）和 `session-id`（450），因此插件 action 落在其 `order` 所指的位置，以另一个 `priority` 复用内置 id 则遮蔽该 action。
+内置 Session 菜单动作通过 `ctx.contextMenus` 注册结构化贡献：置顶（100）、重命名（200）、分支（300）、复制 ID（450）和归档（600）。本机目录定位由 ui-open-in-app 提供（500）。重命名、分支和归档关联已有命令 ID，以显示实时快捷键；点击仍针对捕获的 Session 调用现有业务回调。置顶和归档同时保留悬停按钮 Slot 条目。
 
-条目只接收行身份（`sessionId`、`displayTitle`），其余一切自己负责：用自己注入的 hook 读自己关心的 Host 状态（置顶与归档集合，以每次 Workspace 快照只派生一次的 Set 形式），自己决定是否显示（Host 规定归档与置顶互斥，所以 pin 在归档行上不渲染；`useSessionAccess(sessionId, 'session/fork')` 为 false 时 fork 不渲染），整套行为放在注册项自己的 `inject` face 里（置顶成功后顺带把会话推到保存顺序最前，归档成功后发提示），浮层也自己带——重命名对话框、停止并归档对话框和行 action 的提示是本包注册在 `shell.overlay` 的条目，由 action 注入的请求驱动。菜单条目渲染一个 `role="menuitem"` 的按钮（本包自己的行用 ui-primitives 的 `MenuItemButton`，它带宿主样式，开启新分组的行加 `separatorBefore`，分隔线随行一起出现和消失），并通过 slot 级 `useMenuOpenState` hook（菜单自身的打开状态，从该行的渲染出现处绑定）关闭菜单；悬停按钮条目渲染一个图标按钮，按钮条会拦住点击、不让它打开该行。browser 不再向行传任何 action 回调，它剩下的动作只有搜索结果里的恢复按钮和标题双击，后者发出的是同一个重命名请求。
+旧 `sidebar.workspaces.session.menu.item` Slot 保留给外部 React 条目，提供 `sessionId`、`displayTitle` 和用于关闭菜单的 `useMenuOpenState`。旧条目保持彼此顺序，集中显示在归档之前；其 priority 不再替换内置数据动作。新贡献使用[菜单服务](../ui-context-menu/README.zh.md)。内置动作在菜单打开时持续响应权限和置顶／归档状态；对话框与提示仍为应用级浮层。
 
 现有通知浮层按通知 kind 分派 `workspace.toast`。各 keyed 注册注入本地化展示映射与自己的操作，只有归档通知订阅查看筛选状态。它们渲染包内的 `workspace.toast.content` Factory，所有展示共用一处 Toast primitive。现有通知状态、显示序号、最新提示替换及关闭逻辑仍共享；语言或筛选变化不会重新启动同一条提示的计时。
 
diff --git a/packages/client/ui-workspace/package.json b/packages/client/ui-workspace/package.json
index 23fb18a3d3..34e8a8c0dd 100644
--- a/packages/client/ui-workspace/package.json
+++ b/packages/client/ui-workspace/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-workspace",
   "description": "Workspace picker plugin: one WorkspacePicker registered into the sidebar and empty-state workspace slots",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -40,7 +40,8 @@
         "@deepseek-ai/dsh-client-ui-layout",
         "@deepseek-ai/dsh-client-ui-renderer",
         "@deepseek-ai/dsh-client-ui-session",
-        "@deepseek-ai/dsh-client-ui-sidebar"
+        "@deepseek-ai/dsh-client-ui-sidebar",
+        "@deepseek-ai/dsh-client-ui-context-menu"
       ],
       "platform": "web"
     }
@@ -82,7 +83,8 @@
     "clsx": "^2.0.0",
     "react": "^18.2.0",
     "@deepseek-ai/dsh-client-shortcuts": "workspace:*",
-    "@deepseek-ai/dsh-client-product-analytics": "workspace:*"
+    "@deepseek-ai/dsh-client-product-analytics": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "files": [
     "locale/*.json",
diff --git a/packages/client/ui-workspace/src/client/contract/slots.ts b/packages/client/ui-workspace/src/client/contract/slots.ts
index dbdab7f08e..edbce796de 100644
--- a/packages/client/ui-workspace/src/client/contract/slots.ts
+++ b/packages/client/ui-workspace/src/client/contract/slots.ts
@@ -22,15 +22,11 @@
  * and a hole has exactly one declaring entry — they carry the same owner
  * contract and the same occupant.
  *
- * WorkspaceBrowser also declares the two **Session row action lists**: every
- * row of a Session's "..." menu is an entry of
- * `sidebar.workspaces.session.menu.item`, and every hover button at the row's
- * end is an entry of `sidebar.workspaces.session.row.action`. The shipped
- * actions — pin, rename, fork, archive, copy ID — are ordinary entries
- * registered from `apply`, each carrying its own behavior in its own inject
- * face and reading its own Host state through hooks that face injects, so a
- * client plugin's action lands beside them by `order` and needs nothing from
- * the browser beyond the row identity.
+ * WorkspaceBrowser declares the Session hover-button list. Its built-in
+ * pin and archive entries share callbacks with the structured ctx.contextMenus
+ * contributions. The Session menu adapter owns the legacy
+ * `sidebar.workspaces.session.menu.item` Slot for external React entries;
+ * they receive the captured row identity and render together before Archive.
  *
  * The browser entry additionally declares `list` seats per Session row
  * (`sidebar.session.row.leading`, `sidebar.session.row.trailing`, and
@@ -38,6 +34,7 @@
  * the row's Session identity; a Session binding would activate and retain
  * every listed Session.
  */
+import type { ContextMenuTarget } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import type {
   HostObservable, InjectFace, PropsHooks, PropsLocale, PropsRenderSlots, PropsRuntime, PropsStore, SlotHookFactory,
 } from '@deepseek-ai/dsh-client-ui-slots'
@@ -56,6 +53,21 @@ import type { StartSessionOptions } from '../navigation.ts'
 import type {} from './toast.ts'
 import type { createWorkspaceViewStore } from '../stores.ts'
 
+declare module '@deepseek-ai/dsh-client-ui-context-menu/client' {
+  interface ContextMenuTargetMap {
+    /** Registered Workspace header; path and title belong to the clicked row. */
+    workspace: { readonly workspaceId: WorkspaceId; readonly path: string; readonly displayTitle: string }
+  }
+}
+
+/** One request for the existing Workspace rename or delete dialog. */
+export type WorkspaceActionRequest = {
+  readonly action: 'rename' | 'delete'
+  readonly workspaceId: WorkspaceId
+  readonly displayTitle: string
+  readonly storedTitle: string
+}
+
 /**
  * Owner share of the directory-flow holes: the complete conversation between
  * the trigger surface and the picking interaction. The occupant reads `open`
@@ -150,17 +162,12 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
      */
     'sidebar.session.row.hover': { kind: 'list'; scope: 'root'; owner: SessionRowScheduleOwnerProps }
     /**
-     * The rows of one Session's "..." menu, in ascending `order`. ui-workspace
-     * registers the shipped rows here — `pin` (100), `rename` (200), `fork`
-     * (300), `archive` (400), and `session-id` (450) — so a plugin row is placed
-     * by its own `order` among them. Use a package-namespaced `id`; reusing a shipped id at
-     * another `priority` shadows that row. Each entry renders one
-     * `role="menuitem"` `<button>` (the shipped rows use ui-primitives'
-     * `MenuItemButton`, which adds the host styling and `separatorBefore`),
-     * decides its own visibility from its own state, and dismisses the menu
-     * through the injected `useMenuOpenState` hook after acting; the list's
-     * keyboard walk and focus return read the DOM, so any such button joins
-     * them. Labels come from the contributing package's locale namespace.
+     * Legacy external Session menu rows, in ascending `order`, rendered
+     * together before the built-in Archive action. Built-in actions use
+     * ctx.contextMenus; Slot priority cannot replace them. Each entry renders a
+     * `role="menuitem"` button, owns its visibility and localized label,
+     * and dismisses through `useMenuOpenState`. The shared menu supplies
+     * keyboard navigation and focus return.
      * @example
      * return {
      *   inject: ['slots'],
@@ -234,7 +241,15 @@ export type DirectoryPickingHooks = PropsHooks<DirectoryPickingInjected['hooks']
  * browsing region drives.
  */
 export type WorkspaceBrowserInjected = {
+  /** Open the registered Workspace actions without changing expansion or selection. */
+  openWorkspaceMenu: (workspaceId: WorkspaceId, path: string, displayTitle: string, point: { x: number; y: number }, mode?: 'toggle') => void
+  /** Dismiss the settled Workspace dialog. */
+  settleWorkspaceAction: () => void
+  /** Open actions for the clicked Session without selecting it. */
+  openSessionMenu: (sessionId: SessionId, displayTitle: string, point: { x: number; y: number }, mode?: 'toggle') => void
   hooks: DirectoryPickingInjected['hooks'] & {
+    workspaceActionRequest: HostObservable<WorkspaceActionRequest | null>
+    contextMenuTarget: HostObservable<ContextMenuTarget | null>
     /**
      * Fixed Host facts, reached through a hook rather than injected as values:
      * the renderer memoizes an entry's inject result for the registration's
@@ -293,7 +308,7 @@ export type WorkspaceBrowserInjected = {
 /** The browser's declared viewing store handle, shared with the row actions that write view state. */
 export type WorkspaceViewStoreHandle = ReturnType<typeof createWorkspaceViewStore>
 
-/** Props of one shipped row-menu entry: owner share + locale seat + the entry's own injected share. */
+/** Props of one legacy row-menu entry: owner share + locale seat + the entry's own injected share. */
 export type SessionMenuItemProps<Injected extends object = object> =
   PropsRuntime<'sidebar.workspaces.session.menu.item'>
   & PropsLocale<'workspace'>
@@ -485,7 +500,6 @@ export type WorkspaceBrowserProps =
   PropsRuntime<'sidebar.workspaces'>
   & PropsRenderSlots<
     | 'sidebar.workspaces.directoryFlow'
-    | 'sidebar.workspaces.session.menu.item'
     | 'sidebar.workspaces.session.row.action'
     | 'sidebar.session.row.trailing'
     | 'sidebar.session.row.leading'
diff --git a/packages/client/ui-workspace/src/client/index.ts b/packages/client/ui-workspace/src/client/index.ts
index 56985d0872..ff7890aec5 100644
--- a/packages/client/ui-workspace/src/client/index.ts
+++ b/packages/client/ui-workspace/src/client/index.ts
@@ -1,3 +1,6 @@
+import { IconEditOutlineRegular, IconTrashOutlineRegular, IconPinFillRegular, IconPinOutlineRegular, IconUnarchiveOutlineRegular, IconArchiveOutlineRegular, IconBranchOutlineRegular, IconCopyOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
+import { SessionMenu } from './session-actions/SessionMenu.tsx'
+import type {} from '@deepseek-ai/dsh-client-ui-context-menu/client'
 /**
  * Workspace plugin, browser half. Two registrations: WorkspaceBrowser fills
  * the sidebar shell's `sidebar.workspaces` hole (the whole browsing region),
@@ -6,10 +9,9 @@
  * Workspaces through the global useWorkspaces hook, and each declares its
  * own `single` directory-flow child hole for the composed picker package's
  * client half. WorkspaceBrowser additionally declares the two Session row
- * action lists, and this apply registers the shipped actions — pin, rename,
- * fork, archive, copy ID — into them the way any client plugin would, each
- * with its own behavior, plus the dialogs and the row-action notice into
- * `shell.overlay` (see the contract module doc). It also declares two
+ * action lists. Built-in Session menu actions contribute structured data to
+ * ctx.contextMenus, while external React entries retain the legacy Slot. Dialogs and
+ * the row-action notice register in `shell.overlay` (see the contract module doc). It also declares two
  * Session-row seats: the leading decoration a row renders only while its own
  * primary state is idle, and the section the row's hover card renders between
  * its relative time and its trailing status line. Export discipline:
@@ -41,20 +43,19 @@ import {
   type ArchiveSessionInjected, type ForkSessionInjected, menuOpenStateFactory, type PinSessionInjected,
   type SessionArchiveConfirmInjected, type SessionArchiveConfirmRequest,
   type RenameSessionInjected, type RowToast, type RowToastInjected, type RowToastState, type SessionRenameDialogInjected,
-  type SessionIdInjected, type WorkspaceBrowserInjected, type WorkspacePickerInjected,
+  type WorkspaceActionRequest, type SessionIdInjected, type WorkspaceBrowserInjected, type WorkspacePickerInjected,
 } from './contract/slots.ts'
 import { createWorkspaceShortcutControls, installWorkspaceShortcuts } from './shortcuts.ts'
 import { UiWorkspaceService } from './navigation.ts'
 import { createWorkspaceViewStore } from './stores.ts'
 import { WorkspaceBrowser } from './rows/WorkspaceBrowser.tsx'
-import { ArchiveSessionMenuItem, ArchiveSessionRowButton, SessionArchiveConfirmDialog } from './session-actions/ArchiveSession.tsx'
+import { ArchiveSessionRowButton, SessionArchiveConfirmDialog } from './session-actions/ArchiveSession.tsx'
 import { derive } from './session-actions/derived.ts'
-import { ForkSessionMenuItem } from './session-actions/ForkSession.tsx'
-import { PinSessionMenuItem, PinSessionRowButton } from './session-actions/PinSession.tsx'
-import { RenameSessionMenuItem, SessionRenameDialog } from './session-actions/RenameSession.tsx'
+import { registerSessionMenus } from './session-actions/context-menus.tsx'
+import { PinSessionRowButton } from './session-actions/PinSession.tsx'
+import { SessionRenameDialog } from './session-actions/RenameSession.tsx'
 import { RowActionToast } from './session-actions/RowActionToast.tsx'
 import { registerToasts } from './toast/register.ts'
-import { SessionIdMenuItem } from './session-actions/SessionId.tsx'
 import { WorkspacePicker } from './WorkspacePicker.tsx'
 import { en, ja, es, fr, de, ru, pt, zh, type WorkspaceKey } from './locales.ts'
 
@@ -99,7 +100,7 @@ const NS = 'workspace'
  * provides a waitable service. apply therefore depends on each slot
  * declaration through `slots.inject()` instead of assuming order.
  */
-export const inject = [
+export const inject = ['contextMenus',
   'slots', 'sessions', 'workspaces', 'locale', 'remote', 'remote.directoryPicker', 'layout', 'shortcuts', 'remoteAccess',
 ]
 
@@ -261,7 +262,43 @@ export function apply(ctx: Context): void {
     hooks: { toast: rowToast },
     dismissToast: () => { rowToast.set(null) },
   })
+  const workspaceActionRequest = createSnapshotStore<WorkspaceActionRequest | null>(null)
+  const requestWorkspaceAction = (workspaceId: WorkspaceId, displayTitle: string, action: 'rename' | 'delete'): void => {
+    const workspace = workspaces.list.getSnapshot().items.find(row => row.workspaceId === workspaceId)
+    if (workspace === undefined || !ctx.remoteAccess.source('workspace', workspaceId, `workspace/${action}`).getSnapshot()) return
+    workspaceActionRequest.set({ action, workspaceId, displayTitle, storedTitle: workspace.title })
+  }
+  ctx.slots.inject('contextMenu.icon', function* () {
+    for (const [key, Icon] of Object.entries({
+      'workspace.rename': IconEditOutlineRegular, 'workspace.delete': IconTrashOutlineRegular,
+      'workspace.pin': IconPinOutlineRegular, 'workspace.unpin': IconPinFillRegular,
+      'workspace.archive': IconArchiveOutlineRegular, 'workspace.unarchive': IconUnarchiveOutlineRegular,
+      'workspace.fork': IconBranchOutlineRegular, 'workspace.copy': IconCopyOutlineRegular,
+    })) yield ctx.slots.register({ name: 'contextMenu.icon', key }, Icon)
+  })
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'workspace.rename', target: 'workspace', order: 100,
+    resolve: ({ workspaceId, displayTitle }) => ctx.remoteAccess.source('workspace', workspaceId, 'workspace/rename').getSnapshot()
+      ? [{ id: 'rename', label: ctx.locale.bind(NS)('rename'), icon: { key: 'workspace.rename' }, run: () => { requestWorkspaceAction(workspaceId, displayTitle, 'rename') } }] : [],
+  }), 'workspace: rename menu action')
+  ctx.effect(() => ctx.contextMenus.register({
+    id: 'workspace.delete', target: 'workspace', order: 300,
+    resolve: ({ workspaceId, displayTitle }) => ctx.remoteAccess.source('workspace', workspaceId, 'workspace/delete').getSnapshot()
+      ? [{ id: 'delete', label: ctx.locale.bind(NS)('delete.workspace'), icon: { key: 'workspace.delete' }, danger: true, separatorBefore: true,
+        run: () => { requestWorkspaceAction(workspaceId, displayTitle, 'delete') } }] : [],
+  }), 'workspace: delete menu action')
   const browserInjected = (): WorkspaceBrowserInjected => ({
+    openWorkspaceMenu: (workspaceId, path, displayTitle, point, mode) => {
+      const target = ctx.contextMenus.active.getSnapshot()
+      if (mode === 'toggle' && target?.kind === 'workspace' && target.value.workspaceId === workspaceId) ctx.contextMenus.close()
+      else ctx.contextMenus.open({ kind: 'workspace', value: { workspaceId, path, displayTitle } }, point)
+    },
+    settleWorkspaceAction: () => { workspaceActionRequest.set(null) },
+    openSessionMenu: (sessionId, displayTitle, point, mode) => {
+      const target = ctx.contextMenus.active.getSnapshot()
+      if (mode === 'toggle' && target?.kind === 'session' && target.value.sessionId === sessionId) ctx.contextMenus.close()
+      else ctx.contextMenus.open({ kind: 'session', value: { sessionId, displayTitle } }, point)
+    },
     // Explicit group actions keep their target; unscoped New Session inherits
     // the current Session Workspace before the recent-Workspace fallback.
     startSession: (workspaceId, options) => { uiWorkspace.startSession(workspaceId, options) },
@@ -281,7 +318,8 @@ export function apply(ctx: Context): void {
     requestAddWorkspace: shortcutControls.add,
     closeAddWorkspace: shortcutControls.closeAdd,
     setDirectoryBusy: shortcutControls.directoryBusy,
-    hooks: { directoryFlow: browserFlowSource, hostInfo, workspaceShortcuts: shortcutControls.state, shortcuts: ctx.shortcuts.catalog },
+    hooks: { workspaceActionRequest, contextMenuTarget: ctx.contextMenus.active, directoryFlow: browserFlowSource, hostInfo,
+      workspaceShortcuts: shortcutControls.state, shortcuts: ctx.shortcuts.catalog },
   })
   const pickerInjected = (): WorkspacePickerInjected => ({
     createWorkspace: input => workspaces.create(input),
@@ -294,12 +332,6 @@ export function apply(ctx: Context): void {
       name: 'sidebar.workspaces',
       children: {
         'sidebar.workspaces.directoryFlow': { kind: 'single', scope: 'root' },
-        // Every row entry reads the menu's open state through a hook bound
-        // from the row's render occurrence (the owner passes the state pair
-        // as hookContext).
-        'sidebar.workspaces.session.menu.item': {
-          kind: 'list', scope: 'root', inject: { hooks: { menuOpenState: menuOpenStateFactory, shortcuts: ctx.shortcuts.catalog } },
-        },
         'sidebar.workspaces.session.row.action': { kind: 'list', scope: 'root' },
         'sidebar.session.row.leading': { kind: 'list', scope: 'root', inline: true },
         'sidebar.session.row.trailing': { kind: 'list', scope: 'root', inline: true },
@@ -311,15 +343,14 @@ export function apply(ctx: Context): void {
     },
     WorkspaceBrowser,
   ))
-  // The shipped row actions take the same route as a plugin's: `slots.inject`
-  // waits for the browser registration above to declare each list, and the
-  // entries leave with it. Explicit orders leave room for plugin entries.
-  ctx.slots.inject('sidebar.workspaces.session.menu.item', function* () {
-    yield ctx.slots.register({ name: 'sidebar.workspaces.session.menu.item', id: 'pin', order: 100, locale: NS, inject: pinInjected }, PinSessionMenuItem)
-    yield ctx.slots.register({ name: 'sidebar.workspaces.session.menu.item', id: 'rename', order: 200, locale: NS, inject: renameInjected }, RenameSessionMenuItem)
-    yield ctx.slots.register({ name: 'sidebar.workspaces.session.menu.item', id: 'fork', order: 300, locale: NS, inject: forkInjected }, ForkSessionMenuItem)
-    yield ctx.slots.register({ name: 'sidebar.workspaces.session.menu.item', id: 'archive', order: 400, locale: NS, inject: archiveInjected }, ArchiveSessionMenuItem)
-    yield ctx.slots.register({ name: 'sidebar.workspaces.session.menu.item', id: 'session-id', order: 450, locale: NS, inject: sessionIdInjected }, SessionIdMenuItem)
+  ctx.slots.inject('contextMenu.content', () => ctx.slots.register({
+    name: 'contextMenu.content', key: 'session',
+    children: { 'sidebar.workspaces.session.menu.item': {
+      kind: 'list', scope: 'root', inject: { hooks: { menuOpenState: menuOpenStateFactory, shortcuts: ctx.shortcuts.catalog } },
+    } },
+  }, SessionMenu))
+  registerSessionMenus(ctx, {
+    ...pinInjected(), ...archiveInjected(), ...renameInjected(), ...forkInjected(), ...sessionIdInjected(),
   })
   ctx.slots.inject('sidebar.workspaces.session.row.action', function* () {
     yield ctx.slots.register({ name: 'sidebar.workspaces.session.row.action', id: 'archive', order: 100, locale: NS, inject: archiveInjected }, ArchiveSessionRowButton)
diff --git a/packages/client/ui-workspace/src/client/rows/Rows.module.css b/packages/client/ui-workspace/src/client/rows/Rows.module.css
index 4b1cbc1a03..68d7972013 100644
--- a/packages/client/ui-workspace/src/client/rows/Rows.module.css
+++ b/packages/client/ui-workspace/src/client/rows/Rows.module.css
@@ -344,9 +344,18 @@
     display: inline-flex;
   }
 
-  .sessionRow .rowQuickActions {
+  /* Only update timestamps disappear; pending-interaction labels remain visible. */
+  .sessionRow .timestamp,
+  .sessionRow:has(.pinnedAction) .pinIndicator,
+  .sessionRow .rowQuickActions > :global([data-slot]) > :not(.pinnedAction),
+  .projectRow[aria-expanded='false'] .rowActions {
     display: none;
   }
+
+  .sessionRow .pinnedAction {
+    /* Keep More aligned across rows. Tab order remains More, then Unpin. */
+    order: -1;
+  }
 }
 
 /* An open row menu pins the hover affordances (figma: the row keeps its
diff --git a/packages/client/ui-workspace/src/client/rows/Rows.tsx b/packages/client/ui-workspace/src/client/rows/Rows.tsx
index 116cab1800..442e135649 100644
--- a/packages/client/ui-workspace/src/client/rows/Rows.tsx
+++ b/packages/client/ui-workspace/src/client/rows/Rows.tsx
@@ -3,28 +3,28 @@
  * all data and callbacks arrive via props. Hover swaps (folder->chevron,
  * time->ellipsis, action buttons) are CSS-only, and a session row's clipped
  * title marquees programmatically while the row is hovered. Workspace row
- * menus are visual-only except Rename/Delete. A Session row's "..." menu and
+ * menus share captured Workspace actions with right-click. A Session row's "..." menu and
  * its hover buttons are the `sidebar.workspaces.session.menu.item` and
  * `sidebar.workspaces.session.row.action` lists, rendered through the
  * browser's `renderSlot` with the menu's open state as the occurrence's hook
  * context; this package's own actions are entries like any plugin's. The
  * session and workspace hover cards are suppressed while a menu is open.
  */
-import { useEffect, useMemo, useRef, useState } from 'react'
-import type { RefObject } from 'react'
+import { useEffect, useMemo, useRef } from 'react'
+import type { PointerEvent, RefObject } from 'react'
 import clsx from 'clsx'
 import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
 import {
-  HoverCard, IconArchiveOutlineRegular, IconEditOutlineRegular,
+  HoverCard, IconArchiveOutlineRegular,
   IconEllipsisOutlineRegular, IconFolderCloseRegular, IconFolderOpenRegular,
-  IconNewChatOutlineRegular, IconPinFillRegular, IconTrashOutlineRegular,
-  IconTriangleRightFillRegular, IconUnarchiveOutlineRegular, Menu, relativeTime, StateDot, Tooltip, useRowDragPreview,
+  IconNewChatOutlineRegular, IconPinFillRegular,
+  IconTriangleRightFillRegular, IconUnarchiveOutlineRegular, relativeTime, StateDot, Tooltip, useRowDragPreview,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { ShortcutCatalogEntry } from '@deepseek-ai/dsh-client-shortcuts/client'
 import type { StateDotState } from '@deepseek-ai/dsh-client-ui-primitives'
 import { abbreviateHomePath } from '@deepseek-ai/dsh-util-workspace-path'
 import type { WorkspaceId } from '@deepseek-ai/dsh-api-workspace-controller/client'
-import type { MenuOpenState, WorkspaceBrowserProps } from '../contract/slots.ts'
+import type { WorkspaceBrowserProps } from '../contract/slots.ts'
 import type { GroupNode, SearchResultNode, SessionNode } from '../tree.ts'
 import css from './Rows.module.css'
 
@@ -46,7 +46,6 @@ type RowTranslate = WorkspaceBrowserProps['t']
  * card is open.
  */
 type RowRenderSlots = PropsRenderSlots<
-  | 'sidebar.workspaces.session.menu.item'
   | 'sidebar.workspaces.session.row.action'
   | 'sidebar.session.row.trailing'
   | 'sidebar.session.row.leading'
@@ -108,13 +107,20 @@ function restTitle(title: HTMLSpanElement): void {
  * @param title - ref to the row's clipping title element.
  * @returns stable pointer enter/leave handlers for the row.
  */
-function useTitleMarquee(title: RefObject<HTMLSpanElement | null>): { enter: () => void; leave: () => void } {
+function useTitleMarquee(title: RefObject<HTMLSpanElement | null>): {
+  enter: (event?: PointerEvent) => void
+  leave: () => void
+} {
   const frame = useRef(0)
+  const revealing = useRef(false)
   useEffect(() => () => { cancelAnimationFrame(frame.current) }, [])
   return useMemo(() => ({
-    enter: (): void => {
+    enter: (event?: PointerEvent): void => {
+      if (event?.pointerType === 'touch') return
       /* v8 ignore next -- defensive: the title span renders unconditionally. */
       if (title.current === null) return
+      if (revealing.current) return
+      revealing.current = true
       const element = title.current
       const range = element.scrollWidth - element.clientWidth
       if (range <= MIN_TITLE_REVEAL_PX) return
@@ -134,6 +140,7 @@ function useTitleMarquee(title: RefObject<HTMLSpanElement | null>): { enter: ()
       frame.current = requestAnimationFrame(step)
     },
     leave: (): void => {
+      revealing.current = false
       cancelAnimationFrame(frame.current)
       /* v8 ignore next -- defensive: the title span renders unconditionally. */
       if (title.current === null) return
@@ -218,20 +225,16 @@ type ProjectRowItemProps = {
   containsCurrentDescendant?: boolean
   onToggle: () => void
   onCreate: () => void
-  /** Real-Workspace actions; absent for the ungrouped bucket (no menu shown). */
-  actions?: { rename: () => void; delete: () => void } | undefined
   /** Present only for real Workspace rows in the grouped view. */
   drag?: WorkspaceRowDragProps | undefined
   /** Host account home; POSIX home-rooted hover paths display as `~`. */
   home?: string | undefined
   t: RowTranslate
-} & Pick<WorkspaceBrowserProps, 'useRemoteAccess' | 'useWorkspaceAccess'>
+} & Pick<WorkspaceBrowserProps, 'useRemoteAccess' | 'useWorkspaceAccess' | 'openWorkspaceMenu' | 'useContextMenuTarget' | 'useContextMenu'>
 
 /** Which of one header row's actions the caller's access snapshot allows. */
 interface ProjectRowAccess {
   readonly create: boolean
-  readonly rename: boolean
-  readonly delete: boolean
   readonly reorder: boolean
 }
 
@@ -240,9 +243,8 @@ interface ProjectRowAccess {
  * hover reveals the chevron and create button, and dwelling on a real
  * Workspace shows its hover card (the ungrouped bucket has none).
  * `containsCurrent` arrives on the node (derivation fact, no renderer scan).
- * The create button, each Workspace menu row, and the drag handle are absent
- * while the access snapshot excludes their endpoint: a real Workspace asks
- * its own resource, and the ungrouped bucket asks the global resource.
+ * Create and drag follow the Workspace access snapshot. Menu providers own
+ * their access checks; the ungrouped bucket has no Workspace menu.
  * @param props.group - derived group node.
  * @param props.containsCurrentDescendant - highlight an ancestor even when its subtree is collapsed.
  * @param props.onToggle - expand/collapse the group.
@@ -262,7 +264,7 @@ export function ProjectRowItem(props: ProjectRowItemProps) {
 /** The ungrouped bucket's header: no Workspace resource, so starting a Session there asks the global resource. */
 function UngroupedProjectRow(props: ProjectRowItemProps) {
   const create = props.useRemoteAccess('session/create')
-  return <ProjectRow {...props} access={{ create, rename: false, delete: false, reorder: false }} />
+  return <ProjectRow {...props} access={{ create, reorder: false }} />
 }
 
 /** A real Workspace's header: every action asks that Workspace's resource. */
@@ -270,27 +272,25 @@ function WorkspaceProjectRow({ workspaceId, ...props }: ProjectRowItemProps & {
   const { useWorkspaceAccess } = props
   const access: ProjectRowAccess = {
     create: useWorkspaceAccess(workspaceId, 'session/create'),
-    rename: useWorkspaceAccess(workspaceId, 'workspace/rename'),
-    delete: useWorkspaceAccess(workspaceId, 'workspace/delete'),
     reorder: useWorkspaceAccess(workspaceId, 'workspace/insertBefore'),
   }
   return <ProjectRow {...props} access={access} />
 }
 
 function ProjectRow({
-  group, containsCurrentDescendant = false, onToggle, onCreate, actions, drag: offeredDrag, home, newShortcut, t, access,
+  group, containsCurrentDescendant = false, onToggle, onCreate, drag: offeredDrag, home, newShortcut, t, access,
+  openWorkspaceMenu, useContextMenuTarget, useContextMenu,
 }: ProjectRowItemProps & { access: ProjectRowAccess }) {
+  const { getTriggerProps } = useContextMenu()
   const drag = access.reorder ? offeredDrag : undefined
   const row = group
   // The ungrouped bucket has no workspace title: its label is dictionary copy.
   const label = row.workspaceId === undefined ? t('group.ungrouped') : row.label
   const active = containsCurrentDescendant || (group.expanded && group.containsCurrent)
-  const [menuOpen, setMenuOpen] = useState(false)
+  const menuOpen = useContextMenuTarget(target => target?.kind === 'workspace' && target.value.workspaceId === row.workspaceId)
   const dragPreview = useRowDragPreview(css.dragPreview as string, DRAG_PREVIEW_PROPERTIES)
-  const workspaceMenuItems = [
-    ...access.rename ? [{ id: 'rename', label: t('rename'), icon: <IconEditOutlineRegular /> }] : [],
-    ...access.delete ? [{ id: 'delete', label: t('delete.workspace'), icon: <IconTrashOutlineRegular />, danger: true }] : [],
-  ]
+  const workspaceMenuTarget = row.workspaceId !== undefined && row.cwd !== undefined
+    ? { workspaceId: row.workspaceId, path: row.cwd } : undefined
   const ownRow = (
     <div
       className={clsx(css.projectRow, menuOpen && css.menuOpen)}
@@ -298,6 +298,7 @@ function ProjectRow({
       role="treeitem"
       aria-expanded={row.expanded}
       onClick={onToggle}
+      {...getTriggerProps(workspaceMenuTarget === undefined ? undefined : { kind: 'workspace', value: { ...workspaceMenuTarget, displayTitle: label } })}
       draggable={drag !== undefined}
       onDragStart={drag === undefined
         ? undefined
@@ -319,33 +320,14 @@ function ProjectRow({
         <span className={css.title}>{label}</span>
       </span>
       <span className={css.rowActions}>
-        {actions !== undefined && workspaceMenuItems.length > 0 && (
-          <Menu
-            open={menuOpen}
-            onClose={() => { setMenuOpen(false) }}
-            items={workspaceMenuItems}
-            onSelect={(id) => {
-              setMenuOpen(false)
-              // Unknown ids leave before the dispatch: a future menu row must
-              // not inherit the destructive branch as an else fallback.
-              /* v8 ignore next -- Menu can emit only the rename and delete rows supplied above. */
-              if (id !== 'rename' && id !== 'delete') return
-              if (id === 'rename') actions.rename()
-              else actions.delete()
-            }}
-            portal
-            closeOnPointerLeave
-            anchor={(
-              <button
-                type="button"
-                className={css.iconButton}
-                aria-label={t('actions.workspace.aria', { name: label })}
-                onClick={(e) => { e.stopPropagation(); setMenuOpen(v => !v) }}
-              >
-                <IconEllipsisOutlineRegular />
-              </button>
-            )}
-          />
+        {workspaceMenuTarget !== undefined && (
+          <button type="button" className={css.iconButton} data-context-menu-trigger
+            aria-label={t('actions.workspace.aria', { name: label })} aria-haspopup="menu" aria-expanded={menuOpen}
+            onClick={(event) => {
+              event.stopPropagation()
+              const rect = event.currentTarget.getBoundingClientRect()
+              openWorkspaceMenu(workspaceMenuTarget.workspaceId, workspaceMenuTarget.path, label, { x: rect.left, y: rect.bottom }, 'toggle')
+            }}><IconEllipsisOutlineRegular /></button>
         )}
         {access.create && (
           <Tooltip label={t('actions.newSession')} shortcutKeys={newShortcut?.keys} side="bottom" align="end" delayMs={500} portal>
@@ -613,8 +595,12 @@ export function SearchResultItem({
  * @returns the session row.
  */
 export function SessionNodeItem({
-  node, currentId, now, onOpen, onRenameRequest, renderSlot, onReveal, drag, home, useSessionAccess, t,
+  node, currentId, now, onOpen, onRenameRequest, renderSlot, openSessionMenu, useContextMenuTarget,
+  useContextMenu, onReveal, drag, home, useSessionAccess, t,
 }: {
+  useContextMenu: WorkspaceBrowserProps['useContextMenu']
+  openSessionMenu: WorkspaceBrowserProps['openSessionMenu']
+  useContextMenuTarget: WorkspaceBrowserProps['useContextMenuTarget']
   node: SessionNode
   currentId: string | undefined
   now: number
@@ -629,12 +615,12 @@ export function SessionNodeItem({
   home?: string | undefined
   t: RowTranslate
 } & Pick<WorkspaceBrowserProps, 'useSessionAccess'> & PropsRenderSlots<
-  | 'sidebar.workspaces.session.menu.item'
   | 'sidebar.workspaces.session.row.action'
   | 'sidebar.session.row.trailing'
   | 'sidebar.session.row.leading'
   | 'sidebar.session.row.hover'
 >) {
+  const { getTriggerProps } = useContextMenu()
   const row = node
   const title = displayTitle(node, t)
   const selected = node.id === currentId
@@ -644,15 +630,11 @@ export function SessionNodeItem({
   // Archived rows hold their in-place grayed slot, so manual reorder cannot
   // move them. Pinned rows drag within the pinned block: the browser gates
   // their drop targets to fellow pinned rows.
-  // Renaming from the title and starting a drag ask the row's own access snapshot; a row that
-  // cannot start a drag still accepts drops from rows that can.
   const renamable = useSessionAccess(node.id, 'session/rename')
   const reorderable = useSessionAccess(node.id, 'workspace/insertSessionBefore')
   const draggable = drag !== undefined && reorderable && !row.blank && !row.archived
-  const [menuOpen, setMenuOpen] = useState(false)
+  const menuOpen = useContextMenuTarget(target => target?.kind === 'session' && target.value.sessionId === node.id)
   const dragPreview = useRowDragPreview(css.dragPreview as string, DRAG_PREVIEW_PROPERTIES)
-  // The menu's open state, bound into the row entries' `useMenuOpenState` hook.
-  const menuOpenState = useMemo((): MenuOpenState => [menuOpen, setMenuOpen], [menuOpen])
   const rowRef = useRef<HTMLDivElement>(null)
   const titleRef = useRef<HTMLSpanElement>(null)
   // On macOS the click that activates the window is not delivered, but the
@@ -661,6 +643,10 @@ export function SessionNodeItem({
   const renameArmed = useRef(false)
   const disarmRename = useRef(() => { renameArmed.current = false }).current
   const marquee = useTitleMarquee(titleRef)
+  useEffect(() => {
+    if (menuOpen || rowRef.current?.matches(':hover')) marquee.enter()
+    else marquee.leave()
+  }, [menuOpen, marquee])
   useEffect(() => {
     if (onReveal === undefined) return
     rowRef.current?.scrollIntoView({ block: 'nearest' })
@@ -679,15 +665,16 @@ export function SessionNodeItem({
       aria-selected={selected}
       aria-description={row.archived ? t('toast.archivedNotOpenable') : undefined}
       tabIndex={0}
+
       onClick={() => { onOpen(node.id) }}
-      onKeyDown={(event) => {
+      {...getTriggerProps(row.blank ? undefined : { kind: 'session', value: { sessionId: node.id, displayTitle: row.title } }, { onKeyDown: (event) => {
         if (event.target !== event.currentTarget || (event.key !== 'Enter' && event.key !== ' ')) return
         if (event.altKey || event.ctrlKey || event.metaKey || event.shiftKey) return
         event.preventDefault()
         onOpen(node.id)
-      }}
+      } })}
       onPointerEnter={marquee.enter}
-      onPointerLeave={marquee.leave}
+      onPointerLeave={() => { if (!menuOpen) marquee.leave() }}
       draggable={draggable}
       onDragStart={!draggable
         ? undefined
@@ -749,7 +736,7 @@ export function SessionNodeItem({
       {!row.blank && (
         <span className={css.rowResting}>
           <span
-            className={css.time}
+            className={clsx(css.time, primaryStatus.trailingLabel === undefined && css.timestamp)}
             aria-hidden={primaryStatus.trailingLabel === undefined ? undefined : true}
           >
             {primaryStatus.trailingLabel ?? timeLabel(row.updatedAt, now, t)}
@@ -763,28 +750,15 @@ export function SessionNodeItem({
           button needs no propagation handling of its own. */}
       {!row.blank && (
         <span className={css.rowActions} onClick={(e) => { e.stopPropagation() }}>
-          <Menu
-            open={menuOpen}
-            onClose={() => { setMenuOpen(false) }}
-            portal
-            closeOnPointerLeave
-            anchor={(
-              <button
-                type="button"
-                className={css.iconButton}
-                aria-label={t('actions.session.aria', { name: title })}
-                onClick={() => { setMenuOpen(v => !v) }}
-              >
-                <IconEllipsisOutlineRegular />
-              </button>
-            )}
-          >
-            {renderSlot(
-              'sidebar.workspaces.session.menu.item',
-              { sessionId: node.id, displayTitle: row.title },
-              { hookContext: menuOpenState },
-            )}
-          </Menu>
+          <button type="button" className={css.iconButton}
+            aria-label={t('actions.session.aria', { name: title })}
+            onPointerDown={(event) => { event.stopPropagation() }}
+            data-context-menu-trigger=""
+            onClick={(event) => {
+              event.currentTarget.focus({ preventScroll: true })
+              const rect = event.currentTarget.getBoundingClientRect()
+              openSessionMenu(node.id, row.title, { x: rect.left, y: rect.bottom }, 'toggle')
+            }}><IconEllipsisOutlineRegular /></button>
           <span className={css.rowQuickActions}>
             {renderSlot('sidebar.workspaces.session.row.action', { sessionId: node.id, displayTitle: row.title })}
           </span>
diff --git a/packages/client/ui-workspace/src/client/rows/WorkspaceBrowser.module.css b/packages/client/ui-workspace/src/client/rows/WorkspaceBrowser.module.css
index 034c874d28..c9baaa8c66 100644
--- a/packages/client/ui-workspace/src/client/rows/WorkspaceBrowser.module.css
+++ b/packages/client/ui-workspace/src/client/rows/WorkspaceBrowser.module.css
@@ -634,6 +634,13 @@
   overflow-wrap: anywhere;
 }
 
+@media (pointer: coarse) {
+  .searchInput,
+  .renameInput {
+    font-size: 16px;
+  }
+}
+
 @media (prefers-reduced-motion: reduce) {
   .wide {
     animation: none;
diff --git a/packages/client/ui-workspace/src/client/rows/WorkspaceBrowser.tsx b/packages/client/ui-workspace/src/client/rows/WorkspaceBrowser.tsx
index d7738c2a53..44f3d56036 100644
--- a/packages/client/ui-workspace/src/client/rows/WorkspaceBrowser.tsx
+++ b/packages/client/ui-workspace/src/client/rows/WorkspaceBrowser.tsx
@@ -16,12 +16,13 @@
  */
 import { type CSSProperties, type ReactNode, useEffect, useMemo, useRef, useState } from 'react'
 import clsx from 'clsx'
+import { WorkspaceDialogs } from './WorkspaceDialogs.tsx'
 import {
-  AnimatedRows, Button, HoverCardGroup, IconArchiveCheckOutlineRegular, IconArchiveOffOutlineRegular, IconArchiveOutlineRegular,
+  AnimatedRows, HoverCardGroup, IconArchiveCheckOutlineRegular, IconArchiveOffOutlineRegular, IconArchiveOutlineRegular,
   IconChevronsUpDownOutlineRegular, IconClockOutlineRegular, IconCloseFillRegular,
   IconFlatListOutlineRegular, IconFolderCloseRegular, IconProjectAddOutlineRegular,
   IconQueueOutlineRegular, IconSearchOutlineRegular, IconSlidersTwoOutlineRegular,
-  IconWorkspaceTreeOutlineRegular, Menu, Modal, Tooltip,
+  IconWorkspaceTreeOutlineRegular, Menu, Tooltip,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {
   SessionListState, SessionSearchResultItem,
@@ -187,7 +188,7 @@ function ViewOptionsMenu({ groupBy, orderBy, archivedFilter, onGroupPick, onOrde
       // be cut off at the header's bounds.
       portal
       anchor={(
-        <Tooltip label={t('viewOptions.label')} side="bottom" delayMs={500}>
+        <Tooltip label={t('viewOptions.label')} side="bottom" delayMs={500} portal>
           <button
             type="button"
             className={clsx(css.iconButton, css.wide)}
@@ -251,11 +252,10 @@ function workspaceGroupHalf(e: { clientY: number; currentTarget: HTMLElement }):
 
 type SessionTreeProps = Pick<
   WorkspaceBrowserProps,
-  'useSessionStatus' | 'startSession' | 'open'
+  'useSessionStatus' | 'startSession' | 'open' | 'openSessionMenu' | 'openWorkspaceMenu' | 'useContextMenuTarget' | 'useContextMenu'
   | 'insertWorkspaceBefore' | 't' | 'usePanelInfo'
   | 'useRemoteAccess' | 'useSessionAccess' | 'useWorkspaceAccess'
 > & PropsRenderSlots<
-  | 'sidebar.workspaces.session.menu.item'
   | 'sidebar.workspaces.session.row.action'
   | 'sidebar.session.row.trailing'
   | 'sidebar.session.row.leading'
@@ -286,10 +286,6 @@ type SessionTreeProps = Pick<
   rowState: SessionRowState
   /** Switch the archived filter back to the default hide-archived view. */
   onLeaveArchivedOnly: () => void
-  /** Open the browser-owned rename dialog for a real Workspace group. */
-  onRenameRequest: (workspaceId: WorkspaceId, currentTitle: string) => void
-  /** Open the browser-owned delete-confirmation dialog for a real Workspace group. */
-  onDeleteRequest: (workspaceId: WorkspaceId, currentTitle: string) => void
   /** Open the rename dialog from a row title double-click. */
   onSessionRenameRequest: (sessionId: SessionNode['id'], currentTitle: string) => void
   /** One Session chosen from search that must be exposed and scrolled into view. */
@@ -319,8 +315,8 @@ function SessionTree({
   list, useSessionStatus, startSession, open, workspaces, ungroupedSessionIds,
   rowState, onLeaveArchivedOnly,
   workspaceReady, animationResetKey, usePanelInfo, useRemoteAccess, useSessionAccess, useWorkspaceAccess,
-  onRenameRequest, onDeleteRequest, onSessionRenameRequest,
-  renderSlot,
+  onSessionRenameRequest,
+  renderSlot, openSessionMenu, openWorkspaceMenu, useContextMenuTarget, useContextMenu,
   insertWorkspaceBefore,
   nestWorkspaces, groupExpansion, setGroupExpanded,
   setSessionOrder, home, t,
@@ -558,6 +554,7 @@ function SessionTree({
         <ProjectRowItem
           newShortcut={shortcuts.find(row => row.id === 'session.new')}
           group={group}
+          openWorkspaceMenu={openWorkspaceMenu} useContextMenu={useContextMenu} useContextMenuTarget={useContextMenuTarget}
           useRemoteAccess={useRemoteAccess}
           useWorkspaceAccess={useWorkspaceAccess}
           containsCurrentDescendant={currentAncestors.has(group.key)}
@@ -574,18 +571,6 @@ function SessionTree({
             }
           }}
           drag={workspaceDragProps}
-          actions={group.workspaceId === undefined
-            ? undefined
-            : {
-              rename: () => {
-              /* v8 ignore next -- narrowing guard: the actions object exists only for real-workspace groups. */
-                if (group.workspaceId !== undefined) onRenameRequest(group.workspaceId, group.label)
-              },
-              delete: () => {
-              /* v8 ignore next -- narrowing guard: the actions object exists only for real-workspace groups. */
-                if (group.workspaceId !== undefined) onDeleteRequest(group.workspaceId, group.label)
-              },
-            }}
         />
         {childRows.length > 0 && (
           <div role="group">
@@ -632,6 +617,8 @@ function SessionTree({
               onOpen={open}
               onRenameRequest={onSessionRenameRequest}
               renderSlot={renderSlot}
+              openSessionMenu={openSessionMenu} useContextMenu={useContextMenu}
+              useContextMenuTarget={useContextMenuTarget}
               onReveal={node.id === revealSessionId && group.key === revealGroup
                 ? () => { onSessionRevealed(node.id) }
                 : undefined}
@@ -695,7 +682,7 @@ function SessionTree({
 function FlatList({
   list, sessionIds, rowState, onLeaveArchivedOnly, useSessionStatus, useSessionAccess, open, onSessionRenameRequest,
   usePanelInfo, setSessionOrder, workspaceReady, animationResetKey,
-  revealSessionId, onSessionRevealed, renderSlot, home, t,
+  revealSessionId, onSessionRevealed, renderSlot, openSessionMenu, useContextMenuTarget, useContextMenu, home, t,
 }: Pick<
   SessionTreeProps,
   | 'useSessionStatus'
@@ -703,6 +690,7 @@ function FlatList({
   | 'open'
   | 'onSessionRenameRequest'
   | 'renderSlot'
+  | 'openSessionMenu' | 'useContextMenuTarget' | 'useContextMenu'
   | 'usePanelInfo'
   | 'setSessionOrder'
   | 'workspaceReady'
@@ -763,6 +751,8 @@ function FlatList({
               onOpen={open}
               onRenameRequest={onSessionRenameRequest}
               renderSlot={renderSlot}
+              openSessionMenu={openSessionMenu} useContextMenu={useContextMenu}
+              useContextMenuTarget={useContextMenuTarget}
               onReveal={node.id === revealSessionId
                 ? () => { onSessionRevealed(node.id) }
                 : undefined}
@@ -922,7 +912,7 @@ export function WorkspaceBrowser({
   open,
   requestSessionRename,
   notifyArchivedNotOpenable,
-  renameWorkspace,
+  renameWorkspace, useWorkspaceActionRequest, settleWorkspaceAction,
   deleteWorkspace,
   insertWorkspaceBefore,
   unarchiveSession,
@@ -937,7 +927,7 @@ export function WorkspaceBrowser({
   requestAddWorkspace,
   closeAddWorkspace,
   setDirectoryBusy,
-  renderSlot,
+  renderSlot, openSessionMenu, openWorkspaceMenu, useContextMenuTarget, useContextMenu,
   t,
 }: WorkspaceBrowserProps) {
   const home = useHostInfo(info => info.home)
@@ -1120,7 +1110,7 @@ export function WorkspaceBrowser({
   // states; the menu anchors on this button).
   const wsPickerOpen = shortcutState.addRequested
   const wsPlusRef = useRef<HTMLButtonElement>(null)
-  const composingRef = useRef(false)
+  const workspaceActionRequest = useWorkspaceActionRequest(value => value)
 
   const openSearchResult = (sessionId: SessionId): void => {
     if (archivedSessionIds.includes(sessionId)) {
@@ -1153,8 +1143,10 @@ export function WorkspaceBrowser({
   useEffect(() => {
     if (shortcutState.searchRequest === 0) return
     closeAddWorkspace()
-    if (!wide) expandSidebar()
-    else searchInput.current?.focus({ preventScroll: true })
+    if (!wide || searchInput.current?.closest('[inert]')) {
+      setSearchOnExpand(true)
+      expandSidebar()
+    } else searchInput.current?.focus({ preventScroll: true })
   }, [shortcutState.searchRequest])
 
   useEffect(() => {
@@ -1216,40 +1208,6 @@ export function WorkspaceBrowser({
     }
   }, [normalizedQuery, searchSessions])
 
-  // Rename dialog (browser-owned so it outlives row unmounts during collapse).
-  // The stored title decides whether confirming is a real rename; the draft is
-  // seeded with the label on screen. They differ for a Workspace still
-  // carrying its automatic title, so confirming the prefill pins that name.
-  const [renameTarget, setRenameTarget] = useState<{ workspaceId: WorkspaceId; storedTitle: string } | null>(null)
-  const [renameDraft, setRenameDraft] = useState('')
-  const [renaming, setRenaming] = useState(false)
-  const [renameError, setRenameError] = useState<string | null>(null)
-  const renameTrimmed = renameDraft.trim()
-  // Self is excluded by identity, not by title: the draft is seeded with the
-  // localized label, which for an automatically titled Workspace equals its
-  // own displayed title without being a conflict with itself.
-  const renameDuplicate = renameTarget !== null && renameTrimmed !== ''
-    && workspaces.some(w => w.workspaceId !== renameTarget.workspaceId && w.title === renameTrimmed)
-  const renameBlocked = renaming || renameTrimmed === ''
-    || renameTarget === null || renameTrimmed === renameTarget.storedTitle || renameDuplicate
-  const closeRename = () => {
-    if (renaming) return
-    setRenameTarget(null)
-    setRenameError(null)
-  }
-  const confirmRename = () => {
-    if (renameBlocked) return
-    setRenaming(true)
-    setRenameError(null)
-    renameWorkspace(renameTarget.workspaceId, renameTrimmed).then(() => {
-      setRenaming(false)
-      setRenameTarget(null)
-    }).catch((reason: unknown) => {
-      setRenaming(false)
-      setRenameError(reason instanceof Error ? reason.message : String(reason))
-    })
-  }
-
   // The search results' restore button; the row actions own the rest of the
   // Session verbs as slot entries.
   const onSessionUnarchive = (sessionId: SessionNode['id']) => {
@@ -1257,42 +1215,6 @@ export function WorkspaceBrowser({
       console.warn('session unarchive rejected:', reason)
     })
   }
-
-  // Delete dialog is separate from the row so a successful removal can
-  // unmount that row without tearing down the in-flight confirmation state.
-  const [deleteTarget, setDeleteTarget] = useState<{ workspaceId: WorkspaceId; title: string } | null>(null)
-  const [deleting, setDeleting] = useState(false)
-  const [deleteCommittedId, setDeleteCommittedId] = useState<WorkspaceId | null>(null)
-  const [deleteError, setDeleteError] = useState<string | null>(null)
-  useEffect(() => {
-    if (deleteCommittedId === null
-      || workspaces.some(workspace => workspace.workspaceId === deleteCommittedId)) return
-    setDeleting(false)
-    setDeleteCommittedId(null)
-    setDeleteTarget(null)
-  }, [deleteCommittedId, workspaces])
-  const closeDelete = () => {
-    if (deleting) return
-    setDeleteTarget(null)
-    setDeleteError(null)
-  }
-  const confirmDelete = () => {
-    /* v8 ignore next -- the Modal is absent without a target and its button is disabled while deleting. */
-    if (deleting || deleteTarget === null) return
-    setDeleting(true)
-    setDeleteCommittedId(null)
-    setDeleteError(null)
-    deleteWorkspace(deleteTarget.workspaceId).then(() => {
-      // Keep the confirmation pending until this component has rendered the
-      // committed list projection without the deleted id. Closing earlier
-      // exposes one stale React frame to the next Create Workspace gesture.
-      setDeleteCommittedId(deleteTarget.workspaceId)
-    }).catch((reason: unknown) => {
-      setDeleting(false)
-      setDeleteError(reason instanceof Error ? reason.message : String(reason))
-    })
-  }
-
   return (
     <div className={clsx(css.root, !wide && css.rail)}>
       <div className={clsx(css.sectionHeader, wide && searchSpacingMotionEnabled && css.searchSpacingMotion)}>
@@ -1312,7 +1234,7 @@ export function WorkspaceBrowser({
                 searchInput.current?.focus()
               }}
             >
-              <Tooltip label={t('search')} shortcutKeys={searchShortcut?.keys} side="bottom" delayMs={500} disabled={searchExpanded}>
+              <Tooltip label={t('search')} shortcutKeys={searchShortcut?.keys} side="bottom" delayMs={500} disabled={searchExpanded} portal>
                 <button
                   type="button"
                   className={css.searchButton}
@@ -1374,7 +1296,7 @@ export function WorkspaceBrowser({
               picking affordance has nothing to offer here: the region hides the
               button rather than leaving a dead one in the header. */}
           {directoryFlowAvailable && (
-            <Tooltip label={t('workspace.add')} shortcutKeys={addShortcut?.keys} side="bottom" delayMs={500}>
+            <Tooltip label={t('workspace.add')} shortcutKeys={addShortcut?.keys} side="bottom" delayMs={500} portal>
               <button
                 ref={wsPlusRef}
                 type="button"
@@ -1412,7 +1334,7 @@ export function WorkspaceBrowser({
 
       {/* The collapsed rail keeps search as its own 36px control. */}
       {!wide && <div className={css.search}>
-        <Tooltip label={t('search')} shortcutKeys={searchShortcut?.keys}>
+        <Tooltip label={t('search')} shortcutKeys={searchShortcut?.keys} portal>
           <button
             type="button"
             className={css.searchButton}
@@ -1463,6 +1385,8 @@ export function WorkspaceBrowser({
                 open={guardedOpen}
                 onSessionRenameRequest={requestSessionRename}
                 renderSlot={renderSlot}
+                openSessionMenu={openSessionMenu} useContextMenu={useContextMenu}
+                useContextMenuTarget={useContextMenuTarget}
                 setSessionOrder={saveSessionOrder}
                 revealSessionId={revealSessionId}
                 onSessionRevealed={acknowledgeSessionReveal}
@@ -1481,6 +1405,9 @@ export function WorkspaceBrowser({
                 useSessionStatus={useSessionStatus}
                 onSessionRenameRequest={requestSessionRename}
                 renderSlot={renderSlot}
+                openSessionMenu={openSessionMenu} useContextMenu={useContextMenu}
+                openWorkspaceMenu={openWorkspaceMenu}
+                useContextMenuTarget={useContextMenuTarget}
                 workspaces={orderedWorkspaces}
                 ungroupedSessionIds={orderedUngroupedSessionIds}
                 workspaceReady={workspaceReady}
@@ -1498,82 +1425,13 @@ export function WorkspaceBrowser({
                 onSessionRevealed={acknowledgeSessionReveal}
                 home={home}
                 t={t}
-                onRenameRequest={(workspaceId, displayTitle) => {
-                  setRenameTarget({
-                    workspaceId,
-                    storedTitle: storedWorkspaces.find(w => w.workspaceId === workspaceId)?.title ?? displayTitle,
-                  })
-                  setRenameDraft(displayTitle)
-                  setRenameError(null)
-                }}
-                onDeleteRequest={(workspaceId, title) => {
-                  setDeleteTarget({ workspaceId, title })
-                  setDeleteError(null)
-                }}
               />
             ))}
       </div>
 
-      <Modal
-        open={renameTarget !== null}
-        onClose={closeRename}
-        closeLabel={t('close')}
-        title={t('rename.workspace.title')}
-        footer={(
-          <>
-            <Button variant="outline" disabled={renaming} onClick={closeRename}>{t('cancel')}</Button>
-            <Button variant="primary" disabled={renameBlocked} onClick={confirmRename}>{t('rename')}</Button>
-          </>
-        )}
-      >
-        <input
-          className={css.renameInput}
-          value={renameDraft}
-          aria-label={t('field.workspaceName')}
-          data-modal-autofocus
-          disabled={renaming}
-          onFocus={(e) => { e.target.select() }}
-          onChange={(e) => { setRenameDraft(e.target.value); setRenameError(null) }}
-          onCompositionStart={() => { composingRef.current = true }}
-          onCompositionEnd={() => { composingRef.current = false }}
-          onKeyDown={(e) => {
-            if (e.key === 'Enter' && !composingRef.current) {
-              e.preventDefault()
-              confirmRename()
-            }
-          }}
-        />
-        {renameDuplicate && (
-          <div className={css.renameError} role="alert">{t('conflict.named', { name: renameTrimmed })}</div>
-        )}
-        {renameError !== null && <div className={css.renameError} role="alert">{renameError}</div>}
-      </Modal>
-
-      <Modal
-        open={deleteTarget !== null}
-        onClose={closeDelete}
-        closeLabel={t('close')}
-        title={t('delete.workspace')}
-        {...deleteTarget === null
-          ? {}
-          : { description: t('delete.desc', { name: deleteTarget.title }) }}
-        footer={(
-          <>
-            <Button variant="outline" disabled={deleting} onClick={closeDelete}>{t('cancel')}</Button>
-            <Button
-              variant="outline"
-              className={css.deleteAction}
-              disabled={deleting}
-              onClick={confirmDelete}
-            >
-              {t('delete.workspace')}
-            </Button>
-          </>
-        )}
-      >
-        {deleting && <div className={css.deleteStatus} role="status">{t('delete.pending')}</div>}
-        {deleteError !== null && <div className={css.renameError} role="alert">{deleteError}</div>}
-      </Modal>
+      {workspaceActionRequest !== null && <WorkspaceDialogs key={`${workspaceActionRequest.action}/${workspaceActionRequest.workspaceId}`}
+        request={workspaceActionRequest} workspaces={workspaces} renameWorkspace={renameWorkspace} deleteWorkspace={deleteWorkspace}
+        settleWorkspaceAction={settleWorkspaceAction} t={t} />}
     </div>
   )
 }
diff --git a/packages/client/ui-workspace/src/client/rows/WorkspaceDialogs.tsx b/packages/client/ui-workspace/src/client/rows/WorkspaceDialogs.tsx
new file mode 100644
index 0000000000..f11477a6d2
--- /dev/null
+++ b/packages/client/ui-workspace/src/client/rows/WorkspaceDialogs.tsx
@@ -0,0 +1,141 @@
+/** Workspace rename and removal dialogs, keyed by their captured request. */
+import { useEffect, useRef, useState } from 'react'
+import { Button, Modal } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { WorkspaceId, WorkspaceView } from '@deepseek-ai/dsh-api-workspace-controller/client'
+import type { WorkspaceActionRequest, WorkspaceBrowserProps } from '../contract/slots.ts'
+import css from './WorkspaceBrowser.module.css'
+
+type Props = Pick<WorkspaceBrowserProps, 'renameWorkspace' | 'deleteWorkspace' | 'settleWorkspaceAction' | 't'> & {
+  request: WorkspaceActionRequest
+  workspaces: readonly WorkspaceView[]
+}
+
+/** @param props - captured request, current Workspace list, and existing mutations. @returns the active dialog. */
+export function WorkspaceDialogs({ request, workspaces, renameWorkspace, deleteWorkspace, settleWorkspaceAction, t }: Props) {
+  const composingRef = useRef(false)
+  const renameTarget = request.action === 'rename' ? request : null
+  const [renameDraft, setRenameDraft] = useState(request.displayTitle)
+  const [renaming, setRenaming] = useState(false)
+  const [renameError, setRenameError] = useState<string | null>(null)
+  const renameTrimmed = renameDraft.trim()
+  // Self is excluded by identity, not by title: the draft is seeded with the
+  // localized label, which for an automatically titled Workspace equals its
+  // own displayed title without being a conflict with itself.
+  const renameDuplicate = renameTarget !== null && renameTrimmed !== ''
+    && workspaces.some(w => w.workspaceId !== renameTarget.workspaceId && w.title === renameTrimmed)
+  const renameBlocked = renaming || renameTrimmed === ''
+    || renameTarget === null || renameTrimmed === renameTarget.storedTitle || renameDuplicate
+  const closeRename = () => {
+    if (renaming) return
+    settleWorkspaceAction()
+    setRenameError(null)
+  }
+  const confirmRename = () => {
+    if (renameBlocked) return
+    setRenaming(true)
+    setRenameError(null)
+    renameWorkspace(renameTarget.workspaceId, renameTrimmed).then(() => {
+      setRenaming(false)
+      settleWorkspaceAction()
+    }).catch((reason: unknown) => {
+      setRenaming(false)
+      setRenameError(reason instanceof Error ? reason.message : String(reason))
+    })
+  }
+
+  const deleteTarget = request.action === 'delete' ? request : null
+  const [deleting, setDeleting] = useState(false)
+  const [deleteCommittedId, setDeleteCommittedId] = useState<WorkspaceId | null>(null)
+  const [deleteError, setDeleteError] = useState<string | null>(null)
+  useEffect(() => {
+    if (deleteCommittedId === null
+      || workspaces.some(workspace => workspace.workspaceId === deleteCommittedId)) return
+    setDeleting(false)
+    setDeleteCommittedId(null)
+    settleWorkspaceAction()
+  }, [deleteCommittedId, workspaces, settleWorkspaceAction])
+  const closeDelete = () => {
+    if (deleting) return
+    settleWorkspaceAction()
+    setDeleteError(null)
+  }
+  const confirmDelete = () => {
+    /* v8 ignore next -- the Modal is absent without a target and its button is disabled while deleting. */
+    if (deleting || deleteTarget === null) return
+    setDeleting(true)
+    setDeleteCommittedId(null)
+    setDeleteError(null)
+    deleteWorkspace(deleteTarget.workspaceId).then(() => {
+      // Keep the confirmation pending until this component has rendered the
+      // committed list projection without the deleted id. Closing earlier
+      // exposes one stale React frame to the next Create Workspace gesture.
+      setDeleteCommittedId(deleteTarget.workspaceId)
+    }).catch((reason: unknown) => {
+      setDeleting(false)
+      setDeleteError(reason instanceof Error ? reason.message : String(reason))
+    })
+  }
+
+  return <>
+    <Modal
+      open={renameTarget !== null}
+      onClose={closeRename}
+      closeLabel={t('close')}
+      title={t('rename.workspace.title')}
+      footer={(
+        <>
+          <Button variant="outline" disabled={renaming} onClick={closeRename}>{t('cancel')}</Button>
+          <Button variant="primary" disabled={renameBlocked} onClick={confirmRename}>{t('rename')}</Button>
+        </>
+      )}
+    >
+      <input
+        className={css.renameInput}
+        value={renameDraft}
+        aria-label={t('field.workspaceName')}
+        data-modal-autofocus
+        disabled={renaming}
+        onFocus={(e) => { e.target.select() }}
+        onChange={(e) => { setRenameDraft(e.target.value); setRenameError(null) }}
+        onCompositionStart={() => { composingRef.current = true }}
+        onCompositionEnd={() => { composingRef.current = false }}
+        onKeyDown={(e) => {
+          if (e.key === 'Enter' && !composingRef.current) {
+            e.preventDefault()
+            confirmRename()
+          }
+        }}
+      />
+      {renameDuplicate && (
+        <div className={css.renameError} role="alert">{t('conflict.named', { name: renameTrimmed })}</div>
+      )}
+      {renameError !== null && <div className={css.renameError} role="alert">{renameError}</div>}
+    </Modal>
+
+    <Modal
+      open={deleteTarget !== null}
+      onClose={closeDelete}
+      closeLabel={t('close')}
+      title={t('delete.workspace')}
+      {...deleteTarget === null
+        ? {}
+        : { description: t('delete.desc', { name: deleteTarget.displayTitle }) }}
+      footer={(
+        <>
+          <Button variant="outline" disabled={deleting} onClick={closeDelete}>{t('cancel')}</Button>
+          <Button
+            variant="outline"
+            className={css.deleteAction}
+            disabled={deleting}
+            onClick={confirmDelete}
+          >
+            {t('delete.workspace')}
+          </Button>
+        </>
+      )}
+    >
+      {deleting && <div className={css.deleteStatus} role="status">{t('delete.pending')}</div>}
+      {deleteError !== null && <div className={css.renameError} role="alert">{deleteError}</div>}
+    </Modal>
+  </>
+}
diff --git a/packages/client/ui-workspace/src/client/session-actions/ArchiveSession.tsx b/packages/client/ui-workspace/src/client/session-actions/ArchiveSession.tsx
index 977a6b3ea8..fb7dacb17a 100644
--- a/packages/client/ui-workspace/src/client/session-actions/ArchiveSession.tsx
+++ b/packages/client/ui-workspace/src/client/session-actions/ArchiveSession.tsx
@@ -1,11 +1,4 @@
-/**
- * The archive action: a `sidebar.workspaces.session.menu.item` row and a
- * `sidebar.workspaces.session.row.action` button over one injected behavior,
- * plus the `shell.overlay` dialog that confirms stopping a Session's running
- * work before archiving it. The same entries restore an archived row; the
- * notice a successful archive raises and the diagnostics for Host rejections
- * live in the injected callbacks, not here.
- */
+/** Archive hover button and confirmation for stopping the Session’s running work. */
 import { useState } from 'react'
 import type { SessionActivity } from '@deepseek-ai/dsh-api-workspace-controller/client'
 // Type-only: the family keys each provider merges; a key this program did not compile takes the generic line.
@@ -14,43 +7,15 @@ import type {} from '@deepseek-ai/dsh-jobs/view'
 import type {} from '@deepseek-ai/dsh-schedule/client'
 import type {} from '@deepseek-ai/dsh-subagent/client'
 import {
-  Button, IconArchiveOutlineRegular, IconUnarchiveOutlineRegular, MenuItemButton, Modal, Tooltip,
+  Button, IconArchiveOutlineRegular, IconUnarchiveOutlineRegular, Modal, Tooltip,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {
   ArchiveSessionInjected, SessionArchiveConfirmInjected, SessionArchiveConfirmProps, SessionArchiveConfirmRequest,
-  SessionMenuItemProps, SessionRowActionProps,
+  SessionRowActionProps,
 } from '../contract/slots.ts'
 import css from '../rows/Rows.module.css'
 import browserCss from '../rows/WorkspaceBrowser.module.css'
 
-/**
- * Menu row (order 400): archive, or restore an archived row. Absent while the Session's access
- * snapshot excludes that toggle.
- * @param props - owner share, the archive share, the access Hook, and the menu open state.
- * @returns the row, or nothing when the caller may not toggle this Session's archival.
- */
-export function ArchiveSessionMenuItem({
-  sessionId, useArchived, useMenuOpenState, useShortcuts, useSessionAccess, archiveSession, unarchiveSession, t,
-}: SessionMenuItemProps<ArchiveSessionInjected>) {
-  const [, setMenuOpen] = useMenuOpenState()
-  const shortcut = useShortcuts(rows => rows.find(row => row.id === 'session.archive'))
-  const archived = useArchived(set => set.has(sessionId))
-  const allowed = useSessionAccess(sessionId, archived ? 'workspace/unarchiveSession' : 'workspace/archiveSession')
-  if (!allowed) return null
-  return (
-    <MenuItemButton
-      shortcut={archived ? undefined : shortcut}
-      icon={archived ? <IconUnarchiveOutlineRegular size={14} /> : <IconArchiveOutlineRegular size={14} />}
-      onSelect={() => {
-        setMenuOpen(false)
-        ;(archived ? unarchiveSession : archiveSession)(sessionId)
-      }}
-    >
-      {t(archived ? 'menu.unarchiveSession' : 'menu.archiveSession')}
-    </MenuItemButton>
-  )
-}
-
 /**
  * Hover button (order 100): archive, or restore an archived row. Absent while the Session's access
  * snapshot excludes that toggle.
diff --git a/packages/client/ui-workspace/src/client/session-actions/ForkSession.tsx b/packages/client/ui-workspace/src/client/session-actions/ForkSession.tsx
deleted file mode 100644
index a71dc67638..0000000000
--- a/packages/client/ui-workspace/src/client/session-actions/ForkSession.tsx
+++ /dev/null
@@ -1,31 +0,0 @@
-/** The fork action: one `sidebar.workspaces.session.menu.item` row. */
-import { IconBranchOutlineRegular, MenuItemButton } from '@deepseek-ai/dsh-client-ui-primitives'
-import type { ForkSessionInjected, SessionMenuItemProps } from '../contract/slots.ts'
-
-/**
- * Menu row (order 300): fork at the Session's last completed turn; the child
- * arrives through the Host list beside its source. Absent when the access
- * snapshot excludes `session/fork` for this Session.
- * @param props - owner share, menu open state, access Hook, and the fork share.
- * @returns the row, or nothing when the caller may not fork this Session.
- */
-export function ForkSessionMenuItem({
-  sessionId, useMenuOpenState, useShortcuts, useSessionAccess, forkSession, t,
-}: SessionMenuItemProps<ForkSessionInjected>) {
-  const [, setMenuOpen] = useMenuOpenState()
-  const shortcut = useShortcuts(rows => rows.find(row => row.id === 'session.fork'))
-  const forkAllowed = useSessionAccess(sessionId, 'session/fork')
-  if (!forkAllowed) return null
-  return (
-    <MenuItemButton
-      shortcut={shortcut}
-      icon={<IconBranchOutlineRegular />}
-      onSelect={() => {
-        setMenuOpen(false)
-        forkSession(sessionId)
-      }}
-    >
-      {t('menu.fork')}
-    </MenuItemButton>
-  )
-}
diff --git a/packages/client/ui-workspace/src/client/session-actions/PinSession.tsx b/packages/client/ui-workspace/src/client/session-actions/PinSession.tsx
index df28cb97a8..68e10b7a4c 100644
--- a/packages/client/ui-workspace/src/client/session-actions/PinSession.tsx
+++ b/packages/client/ui-workspace/src/client/session-actions/PinSession.tsx
@@ -1,18 +1,12 @@
-/**
- * The pin action: a `sidebar.workspaces.session.menu.item` row and a
- * `sidebar.workspaces.session.row.action` button over one injected behavior.
- * Pin and archive are mutually exclusive on the Host, so the action reads both
- * sets and does not offer itself on an archived row; what a pin does beyond
- * the Host call (fronting the Session in its saved orders, the failure
- * notice) lives in the injected callbacks, not here.
- */
+/** Session pin hover button over the workspace owner’s shared callbacks. */
 import {
-  IconPinFillRegular, IconPinOutlineRegular, MenuItemButton, Tooltip,
+  IconPinFillRegular, IconPinOutlineRegular, Tooltip,
 } from '@deepseek-ai/dsh-client-ui-primitives'
-import type { PinSessionInjected, SessionMenuItemProps, SessionRowActionProps } from '../contract/slots.ts'
+import clsx from 'clsx'
+import type { PinSessionInjected, SessionRowActionProps } from '../contract/slots.ts'
 import css from '../rows/Rows.module.css'
 
-type PinState = Pick<SessionMenuItemProps<PinSessionInjected>, 'sessionId' | 'usePinned' | 'useArchived' | 'useSessionAccess'>
+type PinState = Pick<SessionRowActionProps<PinSessionInjected>, 'sessionId' | 'usePinned' | 'useArchived' | 'useSessionAccess'>
 
 /** The row's pin and archive membership, one Set lookup each, and whether its access allows the toggle. */
 function usePinState({ sessionId, usePinned, useArchived, useSessionAccess }: PinState) {
@@ -25,32 +19,10 @@ function usePinState({ sessionId, usePinned, useArchived, useSessionAccess }: Pi
 }
 
 /**
- * Menu row (order 100): pin or unpin by the row's current state; absent on archived rows and while
- * the Session's access snapshot excludes that toggle.
- * @param props - owner share, the pin share, the access Hook, and the menu open state.
- * @returns the row, or null for an archived or refused Session.
- */
-export function PinSessionMenuItem(props: SessionMenuItemProps<PinSessionInjected>) {
-  const { sessionId, useMenuOpenState, pinSession, unpinSession, t } = props
-  const [, setMenuOpen] = useMenuOpenState()
-  const { pinned, archived, allowed } = usePinState(props)
-  if (archived || !allowed) return null
-  return (
-    <MenuItemButton
-      icon={pinned ? <IconPinFillRegular /> : <IconPinOutlineRegular />}
-      onSelect={() => {
-        setMenuOpen(false)
-        ;(pinned ? unpinSession : pinSession)(sessionId)
-      }}
-    >
-      {t(pinned ? 'menu.unpinSession' : 'menu.pinSession')}
-    </MenuItemButton>
-  )
-}
-
-/**
- * Hover button (order 200, rightmost: it lands where the rest-state pin marker sits); absent on
+ * Hover button (order 200), also visible without hover when pinned; absent on
  * archived rows and while the Session's access snapshot excludes that toggle.
+ * Tooltip forwards the class to the button. Keep that button directly inside
+ * the display-contents slot anchor so hoverless rows can retain the Unpin action.
  * @param props - owner share, the access Hook, and the pin share.
  * @returns the button, or null for an archived or refused Session.
  */
@@ -62,7 +34,7 @@ export function PinSessionRowButton(props: SessionRowActionProps<PinSessionInjec
     <Tooltip label={t(pinned ? 'actions.unpin' : 'actions.pin')} side="bottom" align="end" delayMs={500} portal>
       <button
         type="button"
-        className={css.iconButton}
+        className={clsx(css.iconButton, pinned && css.pinnedAction)}
         aria-label={t(pinned ? 'menu.unpinSession' : 'menu.pinSession')}
         onClick={() => { (pinned ? unpinSession : pinSession)(sessionId) }}
       >
diff --git a/packages/client/ui-workspace/src/client/session-actions/RenameSession.tsx b/packages/client/ui-workspace/src/client/session-actions/RenameSession.tsx
index 091a4e508d..18db3fcf9b 100644
--- a/packages/client/ui-workspace/src/client/session-actions/RenameSession.tsx
+++ b/packages/client/ui-workspace/src/client/session-actions/RenameSession.tsx
@@ -1,43 +1,11 @@
-/**
- * The rename action: a `sidebar.workspaces.session.menu.item` row that raises
- * the rename request, and the `shell.overlay` dialog entry that answers it.
- * The dialog lives outside the row menu because the row unmounts with the
- * menu; the browser raises the same request from a title double-click.
- */
+/** Rename dialog shared by Session menus, shortcuts, and title double-clicks. */
 import { useRef, useState } from 'react'
-import { Button, IconEditOutlineRegular, MenuItemButton, Modal } from '@deepseek-ai/dsh-client-ui-primitives'
+import { Button, Modal } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {
-  RenameSessionInjected, SessionMenuItemProps, SessionRenameDialogInjected, SessionRenameDialogProps, SessionRenameTarget,
+  SessionRenameDialogInjected, SessionRenameDialogProps, SessionRenameTarget,
 } from '../contract/slots.ts'
 import css from '../rows/WorkspaceBrowser.module.css'
 
-/**
- * Menu row (order 200): ask for the rename dialog, seeded with the row's current title. Absent while
- * the Session's access snapshot excludes `session/rename`.
- * @param props - owner share, menu open state, access Hook, and the rename share.
- * @returns the row, or nothing when the caller may not rename this Session.
- */
-export function RenameSessionMenuItem({
-  sessionId, displayTitle, useMenuOpenState, useShortcuts, useSessionAccess, requestSessionRename, t,
-}: SessionMenuItemProps<RenameSessionInjected>) {
-  const [, setMenuOpen] = useMenuOpenState()
-  const shortcut = useShortcuts(rows => rows.find(row => row.id === 'session.rename'))
-  const renameAllowed = useSessionAccess(sessionId, 'session/rename')
-  if (!renameAllowed) return null
-  return (
-    <MenuItemButton
-      shortcut={shortcut}
-      icon={<IconEditOutlineRegular />}
-      onSelect={() => {
-        setMenuOpen(false)
-        requestSessionRename(sessionId, displayTitle)
-      }}
-    >
-      {t('rename')}
-    </MenuItemButton>
-  )
-}
-
 /**
  * The `shell.overlay` entry: nothing while no rename is requested, otherwise
  * one dialog per request (keyed by the Session, so a new request starts a
diff --git a/packages/client/ui-workspace/src/client/session-actions/SessionId.tsx b/packages/client/ui-workspace/src/client/session-actions/SessionId.tsx
deleted file mode 100644
index da292e67b3..0000000000
--- a/packages/client/ui-workspace/src/client/session-actions/SessionId.tsx
+++ /dev/null
@@ -1,20 +0,0 @@
-/** Copy the row's Session ID without opening its history. */
-import { IconCopyOutlineRegular, MenuItemButton } from '@deepseek-ai/dsh-client-ui-primitives'
-import type { SessionIdInjected, SessionMenuItemProps } from '../contract/slots.ts'
-
-/**
- * Copy the complete ID after dismissing the row menu.
- * @param props - Row identity, menu dismissal, clipboard action, and locale.
- * @returns The final built-in menu item.
- */
-export function SessionIdMenuItem({ sessionId, useMenuOpenState, copySessionId, t }: SessionMenuItemProps<SessionIdInjected>) {
-  const [, setMenuOpen] = useMenuOpenState()
-  return (
-    <MenuItemButton icon={<IconCopyOutlineRegular />} onSelect={() => {
-      setMenuOpen(false)
-      void copySessionId(sessionId)
-    }}>
-      {t('menu.sessionId')}
-    </MenuItemButton>
-  )
-}
diff --git a/packages/client/ui-workspace/src/client/session-actions/SessionMenu.tsx b/packages/client/ui-workspace/src/client/session-actions/SessionMenu.tsx
new file mode 100644
index 0000000000..7078e8607b
--- /dev/null
+++ b/packages/client/ui-workspace/src/client/session-actions/SessionMenu.tsx
@@ -0,0 +1,13 @@
+/** Legacy external Session contributions shared by the row, header, and More trigger. */
+import { useMemo } from 'react'
+import type { PropsRenderSlots, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+
+type Props = Pick<PropsRuntime<'contextMenu.content'>, 'target' | 'dismiss'> & PropsRenderSlots<'sidebar.workspaces.session.menu.item'>
+/** @param props - captured Session and the existing extension position. @returns legacy component contributions. */
+export function SessionMenu({ target, dismiss, renderSlot }: Props) {
+  const hookContext = useMemo<readonly [boolean, (open: boolean) => void]>(() => [true, (open) => { if (!open) dismiss() }], [dismiss])
+  if (target.kind !== 'session') return null
+  return renderSlot('sidebar.workspaces.session.menu.item', target.value, {
+    hookContext,
+  })
+}
diff --git a/packages/client/ui-workspace/src/client/session-actions/context-menus.tsx b/packages/client/ui-workspace/src/client/session-actions/context-menus.tsx
new file mode 100644
index 0000000000..f312e0233f
--- /dev/null
+++ b/packages/client/ui-workspace/src/client/session-actions/context-menus.tsx
@@ -0,0 +1,69 @@
+/** Structured Session actions over the workspace owner's existing callbacks. */
+import type { Context } from '@deepseek-ai/cordis'
+import type { RemoteEndpoint } from '@deepseek-ai/dsh-api-remote-access/client'
+import type { ShortcutCommandId } from '@deepseek-ai/dsh-client-shortcuts/client'
+import type { MenuContribution, ContextMenuTargetMap } from '@deepseek-ai/dsh-client-ui-context-menu/client'
+import type {
+  ArchiveSessionInjected, ForkSessionInjected, PinSessionInjected, RenameSessionInjected, SessionIdInjected,
+} from '../contract/slots.ts'
+
+type Actions = Omit<PinSessionInjected & ArchiveSessionInjected, 'hooks'>
+  & ForkSessionInjected & RenameSessionInjected & SessionIdInjected
+
+/**
+ * Register built-in actions while retaining the legacy Slot for external components.
+ * @param ctx - workspace plugin context owning menus, access, membership, and locale.
+ * @param actions - shared row and dialog callbacks; execution always uses the captured Session.
+ */
+export function registerSessionMenus(ctx: Context, actions: Actions): void {
+  const t = ctx.locale.bind('workspace')
+  const register = (
+    id: string,
+    order: number,
+    endpoints: readonly RemoteEndpoint[],
+    resolve: MenuContribution<'session'>['resolve'],
+  ): void => {
+    ctx.effect(() => ctx.contextMenus.register({
+      id: `session.${id}`, target: 'session', order,
+      observe: ({ sessionId }) => [
+        ctx.workspaces.list, ctx.locale,
+        ...endpoints.map(action => ctx.remoteAccess.source('session', sessionId, action)),
+      ],
+      resolve,
+    }), `ui-workspace: ${id} menu`)
+  }
+  const allowed = (target: ContextMenuTargetMap['session'], action: RemoteEndpoint): boolean =>
+    ctx.remoteAccess.source('session', target.sessionId, action).getSnapshot()
+  const archived = (target: ContextMenuTargetMap['session']): boolean =>
+    ctx.workspaces.list.getSnapshot().archivedSessionIds.includes(target.sessionId)
+  register('pin', 100, ['workspace/pinSession', 'workspace/unpinSession'], (target) => {
+    const pinned = ctx.workspaces.list.getSnapshot().pinnedSessionIds.includes(target.sessionId)
+    if (archived(target) || !allowed(target, pinned ? 'workspace/unpinSession' : 'workspace/pinSession')) return []
+    return [{
+      id: 'pin', label: t(pinned ? 'menu.unpinSession' : 'menu.pinSession'), icon: { key: pinned ? 'workspace.unpin' : 'workspace.pin' },
+      run: () => { (pinned ? actions.unpinSession : actions.pinSession)(target.sessionId) },
+    }]
+  })
+  register('rename', 200, ['session/rename'], target => allowed(target, 'session/rename') ? [{
+    id: 'rename', label: t('rename'), icon: { key: 'workspace.rename' }, commandId: 'session.rename' as ShortcutCommandId,
+    run: () => { actions.requestSessionRename(target.sessionId, target.displayTitle) },
+  }] : [])
+  register('fork', 300, ['session/fork'], target => allowed(target, 'session/fork') ? [{
+    id: 'fork', label: t('menu.fork'), icon: { key: 'workspace.fork' }, commandId: 'session.fork' as ShortcutCommandId,
+    run: () => { actions.forkSession(target.sessionId) },
+  }] : [])
+  register('id', 450, [], target => [{
+    id: 'copy', label: t('menu.sessionId'), icon: { key: 'workspace.copy' }, separatorBefore: true,
+    run: () => actions.copySessionId(target.sessionId),
+  }])
+  register('archive', 600, ['workspace/archiveSession', 'workspace/unarchiveSession'], (target) => {
+    const restoring = archived(target)
+    if (!allowed(target, restoring ? 'workspace/unarchiveSession' : 'workspace/archiveSession')) return []
+    return [{
+      id: 'archive', label: t(restoring ? 'menu.unarchiveSession' : 'menu.archiveSession'),
+      icon: { key: restoring ? 'workspace.unarchive' : 'workspace.archive' }, separatorBefore: true, afterContent: true,
+      ...restoring ? {} : { commandId: 'session.archive' as ShortcutCommandId },
+      run: () => { (restoring ? actions.unarchiveSession : actions.archiveSession)(target.sessionId) },
+    }]
+  })
+}
diff --git a/packages/client/ui-workspace/src/client/shortcuts.ts b/packages/client/ui-workspace/src/client/shortcuts.ts
index ed9852b81a..180c13fbcb 100644
--- a/packages/client/ui-workspace/src/client/shortcuts.ts
+++ b/packages/client/ui-workspace/src/client/shortcuts.ts
@@ -48,7 +48,7 @@ export function createWorkspaceShortcutControls(): WorkspaceShortcutControls {
 
 /**
  * Register navigation commands against the existing workspace owner.
- * Rename requires a nonblank main Conversation with no modal obscuring it.
+ * Rename requires a nonblank main Conversation with no modal other than the navigation drawer obscuring it.
  * @param ctx - plugin context with the shortcut, locale, and model services.
  * @param navigation - session creation and forking from the pointer controls' navigation service.
  * @param controls - browser-owned opening requests.
@@ -75,7 +75,7 @@ export function installWorkspaceShortcuts(
         'desktop:macos': { code, modifiers }, 'desktop:windows': { code, modifiers }, 'desktop:linux': { code, modifiers },
         'web:macos': { code, modifiers: webModifiers }, 'web:windows': { code, modifiers: webModifiers },
       },
-      regions: ['page', 'editable'], modals: [], resolve,
+      regions: ['page', 'editable'], modals: ['sidebar'], resolve,
     }), `ui-workspace: ${id}`)
   }
   register('session.new', () => t('session.new'), ['new session', 'new chat'], 'KeyN', ['primary'], ['primary', 'alt'],
@@ -89,7 +89,7 @@ export function installWorkspaceShortcuts(
     })
   register('session.rename', () => t('rename.session.title'), ['rename session'], 'KeyG', ['primary', 'alt'], ['primary', 'alt'], (context) => {
     const target = current()
-    return target === undefined || target.blank || context.modal !== null || ctx.layout.panelInfo.getSnapshot().activePanelId !== null
+    return target === undefined || target.blank || (context.modal !== null && context.modal !== 'sidebar') || ctx.layout.panelInfo.getSnapshot().activePanelId !== null
       ? { status: 'blocked', reason: t('shortcut.noSession') }
       : { status: 'handled', run: () => { controls.rename(target.id, target.title?.trim() ?? '') } }
   })
diff --git a/packages/client/ui-workspace/tests/access-assembly.client.spec.tsx b/packages/client/ui-workspace/tests/access-assembly.client.spec.tsx
index 89d1322b42..2d8974041f 100644
--- a/packages/client/ui-workspace/tests/access-assembly.client.spec.tsx
+++ b/packages/client/ui-workspace/tests/access-assembly.client.spec.tsx
@@ -17,6 +17,7 @@ import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
 import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
 import { allowAllAccessPlugin, SlotTestRuntime, usePinnedBrowserLanguages } from '@deepseek-ai/dsh-client-test-runtime'
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-workspace/client'
 
 usePinnedBrowserLanguages('zh-CN')
@@ -74,6 +75,7 @@ async function bench(access: ClientAccessState, options: { ungroupedSession?: Se
     { 'sidebar.workspaces': { kind: 'single', scope: 'root' } } as never,
     SidebarFrame as never,
   )
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   await runtime.mount({ inject: [...inject], apply })
   return runtime
 }
@@ -90,7 +92,12 @@ describe('Workspace header actions under the page access snapshot', () => {
       runtime.renderRoot()
       const header = await screen.findByRole('treeitem')
       expect(screen.queryByRole('button', { name: '在“Project”中新建会话' })).toBeNull()
-      expect(screen.queryByRole('button', { name: '工作区“Project”的操作' })).toBeNull()
+      expect(screen.getByRole('button', { name: '工作区“Project”的操作' })).toBeTruthy()
+      const target = { kind: 'workspace' as const, value: { workspaceId: WORKSPACE, path: '/projects/project', displayTitle: 'Project' } }
+      const deniedMenu = runtime.ctx.contextMenus.resolve(target)
+      await deniedMenu.ready
+      expect(deniedMenu.source.getSnapshot()).toEqual([])
+      deniedMenu.dispose()
       expect(header.getAttribute('draggable')).toBe('false')
 
       // The Workspace's own grant moves its actions; the global answer is never consulted for them.
@@ -107,6 +114,14 @@ describe('Workspace header actions under the page access snapshot', () => {
       expect(screen.getByRole('button', { name: '工作区“Project”的操作' })).toBeTruthy()
       expect(screen.getByRole('treeitem').getAttribute('draggable')).toBe('true')
 
+      const grantedMenu = runtime.ctx.contextMenus.resolve(target)
+      await grantedMenu.ready
+      expect(grantedMenu.source.getSnapshot().map(item => item.id)).toEqual(['workspace.rename/rename'])
+      act(() => { access.replace({ type: 'baseline', owner: false, grants: [] }) })
+      grantedMenu.select('workspace.rename/rename')
+      expect(screen.queryByRole('dialog')).toBeNull()
+      grantedMenu.dispose()
+
       // The owner's snapshot answers every action.
       act(() => { access.replace({ type: 'baseline', owner: true }) })
       expect(screen.getByRole('button', { name: '在“Project”中新建会话' })).toBeTruthy()
diff --git a/packages/client/ui-workspace/tests/apply.client.spec.ts b/packages/client/ui-workspace/tests/apply.client.spec.ts
index bf5acfea6b..884f9664cb 100644
--- a/packages/client/ui-workspace/tests/apply.client.spec.ts
+++ b/packages/client/ui-workspace/tests/apply.client.spec.ts
@@ -1,4 +1,6 @@
+import type { ContextMenuTarget } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { MenuRegistry } from '@deepseek-ai/dsh-client-ui-context-menu/src/client/registry.ts'
 import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it, onTestFinished, vi } from 'vitest'
 import type {
@@ -15,18 +17,16 @@ import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
 import { apply, inject } from '@deepseek-ai/dsh-client-ui-workspace/client'
 import type { WorkspaceBrowserInjected, WorkspacePickerInjected } from '@deepseek-ai/dsh-client-ui-workspace/client'
 import {
-  type ArchiveSessionInjected, type ForkSessionInjected, menuOpenStateFactory, type PinSessionInjected,
-  type RenameSessionInjected, type RowToastInjected, type SessionArchiveConfirmInjected, type SessionRenameDialogInjected,
-  type SessionIdInjected, type WorkspaceViewStoreHandle,
+  type ArchiveSessionInjected, menuOpenStateFactory, type PinSessionInjected,
+  type RowToastInjected, type SessionArchiveConfirmInjected, type SessionRenameDialogInjected,
+  type WorkspaceViewStoreHandle,
 } from '../src/client/contract/slots.ts'
 import { WorkspaceBrowser } from '../src/client/rows/WorkspaceBrowser.tsx'
-import { ArchiveSessionMenuItem, ArchiveSessionRowButton, SessionArchiveConfirmDialog } from '../src/client/session-actions/ArchiveSession.tsx'
-import { ForkSessionMenuItem } from '../src/client/session-actions/ForkSession.tsx'
-import { PinSessionMenuItem, PinSessionRowButton } from '../src/client/session-actions/PinSession.tsx'
-import { RenameSessionMenuItem, SessionRenameDialog } from '../src/client/session-actions/RenameSession.tsx'
+import { ArchiveSessionRowButton, SessionArchiveConfirmDialog } from '../src/client/session-actions/ArchiveSession.tsx'
+import { PinSessionRowButton } from '../src/client/session-actions/PinSession.tsx'
+import { SessionRenameDialog } from '../src/client/session-actions/RenameSession.tsx'
 import { RowActionToast } from '../src/client/session-actions/RowActionToast.tsx'
 import type { ArchiveToastInjected, ToastDisplayInjected } from '../src/client/contract/toast.ts'
-import { SessionIdMenuItem } from '../src/client/session-actions/SessionId.tsx'
 import { WorkspacePicker } from '../src/client/WorkspacePicker.tsx'
 import { FLAT_SESSION_ORDER_KEY } from '../src/client/stores.ts'
 import { UNGROUPED_KEY } from '../src/client/tree.ts'
@@ -66,6 +66,9 @@ async function bench(access: 'fake' | 'static' = 'fake') {
     },
     catalog: createSnapshotStore([]),
   })
+  const menuRegistry = new MenuRegistry(vi.fn())
+  onTestFinished(() => { menuRegistry.dispose() })
+  ctx.provide('contextMenus', { register: menuRegistry.register.bind(menuRegistry), resolve: menuRegistry.resolve.bind(menuRegistry), active: createSnapshotStore(null), open: vi.fn(), close: vi.fn() } as never)
   ctx.provide('uiConversation', {})
   await ctx.plugin(SlotRegistry).await()
   const accessSource = vi.fn((_kind: string, _id: string, _action: string): HostObservable<boolean> => ALLOWED)
@@ -181,8 +184,9 @@ type RowListName = typeof MENU_ITEM | typeof ROW_ACTION | 'shell.overlay'
 
 /** Declare any subset of the holes with a single root registration ('root' is a single slot); the overlay is a list. */
 function declare(slots: SlotRegistry, ...names: HoleName[]): () => void {
-  const children = Object.fromEntries(names.map(name => [
-    name, { kind: name === 'shell.overlay' ? 'list' : 'single', scope: 'root' },
+  const children = Object.fromEntries([...names, 'contextMenu.content', 'contextMenu.icon'].map(name => [
+    name, { kind: name === 'shell.overlay' ? 'list' : name.startsWith('contextMenu.') ? 'keyed' : 'single', scope: 'root',
+      ...name === 'contextMenu.icon' ? { inline: true } : {} },
   ]))
   return slots.register({ name: 'root', children } as never, () => null)
 }
@@ -205,6 +209,20 @@ function faceOf(registration: StoredEntry): object {
   return registration.inject()
 }
 
+/** Select the registered data action, preserving the same captured row owner as pointer triggers. */
+function sessionMenuActions(ctx: Context) {
+  const select = (id: string, sessionId: SessionId, displayTitle = ''): void => {
+    const menu = ctx.contextMenus.resolve({ kind: 'session', value: { sessionId, displayTitle } })
+    expect(menu.source.getSnapshot().some(item => item.id === id)).toBe(true)
+    menu.select(id)
+  }
+  return {
+    forkSession: (sessionId: SessionId) => { select('session.fork/fork', sessionId) },
+    requestSessionRename: (sessionId: SessionId, title: string) => { select('session.rename/rename', sessionId, title) },
+    copySessionId: async (sessionId: SessionId) => { select('session.id/copy', sessionId); await settled() },
+  }
+}
+
 /** The viewing-store instance the browser's declared handle hands the renderer. */
 function viewInstance(slots: SlotRegistry) {
   const browser = slots.entries('sidebar.workspaces')[0]!
@@ -221,7 +239,7 @@ describe('ui-workspace apply', () => {
   })
 
   it('declares the services it drives', () => {
-    expect(inject).toEqual([
+    expect(inject).toEqual(['contextMenus',
       'slots', 'sessions', 'workspaces', 'locale', 'remote', 'remote.directoryPicker', 'layout', 'shortcuts', 'remoteAccess',
     ])
   })
@@ -287,7 +305,7 @@ describe('ui-workspace apply', () => {
     await Promise.resolve()
     expect(after.slots.entries('conversation.hero.workspace')[0]!.component).toBe(WorkspacePicker)
     // The row actions follow the browser's own declaration, whenever it lands.
-    expect(after.slots.entries(MENU_ITEM)).toHaveLength(5)
+    expect(after.slots.entries(MENU_ITEM)).toHaveLength(0)
     expect(after.slots.entries(ROW_ACTION)).toHaveLength(2)
     expect(after.slots.entries('shell.overlay')).toHaveLength(3)
   })
@@ -307,13 +325,7 @@ describe('ui-workspace apply', () => {
 
     const rows = (key: RowListName) => b.slots.entries(key)
       .map(registration => [registration.options.id, registration.options.order, registration.component, registration.locale])
-    expect(rows(MENU_ITEM)).toEqual([
-      ['pin', 100, PinSessionMenuItem, 'workspace'],
-      ['rename', 200, RenameSessionMenuItem, 'workspace'],
-      ['fork', 300, ForkSessionMenuItem, 'workspace'],
-      ['archive', 400, ArchiveSessionMenuItem, 'workspace'],
-      ['session-id', 450, SessionIdMenuItem, 'workspace'],
-    ])
+    expect(rows(MENU_ITEM)).toEqual([])
     expect(rows(ROW_ACTION)).toEqual([
       ['archive', 100, ArchiveSessionRowButton, 'workspace'],
       ['pin', 200, PinSessionRowButton, 'workspace'],
@@ -343,7 +355,6 @@ describe('ui-workspace apply', () => {
     }
     // Each share raises its own notices inside its callbacks.
     for (const id of ['pin', 'archive']) {
-      expect(faceOf(entry(b.slots, MENU_ITEM, id))).not.toHaveProperty('notify')
       expect(faceOf(entry(b.slots, ROW_ACTION, id))).not.toHaveProperty('notify')
     }
   })
@@ -353,7 +364,7 @@ describe('ui-workspace apply', () => {
     onTestFinished(() => b.ctx.fiber.dispose())
     declare(b.slots, 'sidebar.workspaces', 'shell.overlay')
     await b.ctx.plugin({ inject: [...inject], apply }).await()
-    const action = faceOf(entry(b.slots, MENU_ITEM, 'session-id')) as SessionIdInjected
+    const action = sessionMenuActions(b.ctx)
     const toast = faceOf(entry(b.slots, 'shell.overlay', 'workspace.row-toast')) as RowToastInjected
     const writeText = vi.fn(async () => {
       if (!accepted) throw new Error('clipboard denied')
@@ -424,7 +435,7 @@ describe('ui-workspace apply', () => {
     b.setWorkspaces(workspaceState([workspace('alpha', ['one', 'two'])], [sid('two')], [sid('one')]))
     declare(b.slots, 'sidebar.workspaces')
     await b.ctx.plugin({ inject: [...inject], apply }).await()
-    const pin = faceOf(entry(b.slots, MENU_ITEM, 'pin')) as PinSessionInjected
+    const pin = faceOf(entry(b.slots, ROW_ACTION, 'pin')) as PinSessionInjected
     const pinButton = faceOf(entry(b.slots, ROW_ACTION, 'pin')) as PinSessionInjected
     const archive = faceOf(entry(b.slots, ROW_ACTION, 'archive')) as ArchiveSessionInjected
     const pinned = pin.hooks.pinned.getSnapshot()
@@ -457,7 +468,7 @@ describe('ui-workspace apply', () => {
     const toast = faceOf(entry(b.slots, 'shell.overlay', 'workspace.row-toast')) as RowToastInjected
     expect(view.getSnapshot().sessionOrderByAccount).toEqual({})
 
-    const pin = faceOf(entry(b.slots, MENU_ITEM, 'pin')) as PinSessionInjected
+    const pin = faceOf(entry(b.slots, ROW_ACTION, 'pin')) as PinSessionInjected
     pin.pinSession(sid('three'))
     expect(b.pinSession).toHaveBeenCalledWith('three')
     await vi.waitFor(() => {
@@ -522,7 +533,7 @@ describe('ui-workspace apply', () => {
       expect(toast.hooks.toast.getSnapshot()).toEqual({ kind: 'archived', sessionId: 'one', seq: 1 })
     })
     // The menu row's face is the same behavior; a restore raises no notice.
-    const archiveRow = faceOf(entry(b.slots, MENU_ITEM, 'archive')) as ArchiveSessionInjected
+    const archiveRow = faceOf(entry(b.slots, ROW_ACTION, 'archive')) as ArchiveSessionInjected
     archiveRow.unarchiveSession(sid('one'))
     expect(unarchiveSession).toHaveBeenCalledWith('one')
     await settled()
@@ -631,7 +642,7 @@ describe('ui-workspace apply', () => {
 
     // Fork goes through the navigation service, which leaves the child unselected.
     const forkSession = vi.spyOn(b.ctx.uiWorkspace, 'forkSession')
-    const fork = faceOf(entry(b.slots, MENU_ITEM, 'fork')) as ForkSessionInjected
+    const fork = sessionMenuActions(b.ctx)
     using source = b.ctx.sessions.retain(sid('session'), { source: 'controllerOperation' })
     await source.ready
     b.retain.mockClear()
@@ -645,7 +656,7 @@ describe('ui-workspace apply', () => {
     expect(b.selectPanel).not.toHaveBeenCalled()
 
     // The rename row raises the request the dialog entry reads; settling clears it.
-    const rename = faceOf(entry(b.slots, MENU_ITEM, 'rename')) as RenameSessionInjected
+    const rename = sessionMenuActions(b.ctx)
     const dialog = faceOf(entry(b.slots, 'shell.overlay', 'workspace.session-rename')) as SessionRenameDialogInjected
     expect(dialog.hooks.renameRequest.getSnapshot()).toBeNull()
     const requested = vi.fn()
@@ -691,7 +702,7 @@ describe('ui-workspace apply', () => {
         if (state === 'closed') source.release()
       }
       b.retain.mockClear()
-      const fork = faceOf(entry(b.slots, MENU_ITEM, 'fork')) as ForkSessionInjected
+      const fork = sessionMenuActions(b.ctx)
       const toast = faceOf(entry(b.slots, 'shell.overlay', 'workspace.row-toast')) as RowToastInjected
 
       expect(() => { fork.forkSession(sid('source')) }).not.toThrow()
@@ -716,7 +727,7 @@ describe('ui-workspace apply', () => {
       new RemoteError('session/migration-required', 'migration required', { sessionId: sid('source') }),
       sid('source'),
     ))
-    const fork = faceOf(entry(b.slots, MENU_ITEM, 'fork')) as ForkSessionInjected
+    const fork = sessionMenuActions(b.ctx)
     const toast = faceOf(entry(b.slots, 'shell.overlay', 'workspace.row-toast')) as RowToastInjected
 
     fork.forkSession(sid('source'))
@@ -747,7 +758,7 @@ describe('ui-workspace apply', () => {
         new RemoteError('session/migration-required', 'migration required', { sessionId: sid('source') }),
         sid('source'),
       ))
-      const fork = faceOf(entry(b.slots, MENU_ITEM, 'fork')) as ForkSessionInjected
+      const fork = sessionMenuActions(b.ctx)
       const toast = faceOf(entry(b.slots, 'shell.overlay', 'workspace.row-toast')) as RowToastInjected
       fork.forkSession(sid('source'))
       await vi.waitFor(() => {
@@ -777,7 +788,7 @@ describe('ui-workspace apply', () => {
       address: { parentSessionId: sid('parent'), childSessionId: sid('source'), mode: 'one-shot' },
     } })
     b.retain.mockClear()
-    const fork = faceOf(entry(b.slots, MENU_ITEM, 'fork')) as ForkSessionInjected
+    const fork = sessionMenuActions(b.ctx)
     const toast = faceOf(entry(b.slots, 'shell.overlay', 'workspace.row-toast')) as RowToastInjected
 
     fork.forkSession(sid('source'))
@@ -810,7 +821,7 @@ describe('ui-workspace apply', () => {
         : new RemoteError('session/migration-required', 'migration required', { sessionId: sid('source') })
     b.fork.mockRejectedValueOnce(error)
     const forkSession = vi.spyOn(b.ctx.uiWorkspace, 'forkSession')
-    const fork = faceOf(entry(b.slots, MENU_ITEM, 'fork')) as ForkSessionInjected
+    const fork = sessionMenuActions(b.ctx)
     const toast = faceOf(entry(b.slots, 'shell.overlay', 'workspace.row-toast')) as RowToastInjected
 
     fork.forkSession(sid('source'))
@@ -900,7 +911,7 @@ describe('ui-workspace apply', () => {
     declare(b.slots, 'sidebar.workspaces', 'conversation.hero.workspace', 'conversation.empty.workspace', 'shell.overlay')
     const fiber = b.ctx.plugin({ inject: [...inject], apply })
     await fiber.await()
-    expect(b.slots.entries(MENU_ITEM)).toHaveLength(5)
+    expect(b.slots.entries(MENU_ITEM)).toHaveLength(0)
     expect(b.slots.entries(ROW_ACTION)).toHaveLength(2)
     expect(b.slots.entries('shell.overlay')).toHaveLength(3)
     await fiber.dispose()
@@ -916,3 +927,44 @@ describe('ui-workspace apply', () => {
     expect(b.slots.snapshot('factory:workspace.toast.content')).toEqual([])
   })
 })
+
+it('captures Workspace menu requests, rechecks mutable access, and withdraws registrations on unload', async () => {
+  const b = await bench()
+  b.setWorkspaces(workspaceState([workspace('alpha', [])]))
+  declare(b.slots, 'sidebar.workspaces')
+  const fiber = b.ctx.plugin({ inject: [...inject], apply })
+  await fiber.await()
+  const browser = faceOf(b.slots.entries('sidebar.workspaces')[0]!) as WorkspaceBrowserInjected
+  const target = { kind: 'workspace' as const, value: { workspaceId: 'alpha' as WorkspaceId, path: '/projects/alpha', displayTitle: 'Alpha' } }
+  browser.openWorkspaceMenu(target.value.workspaceId, target.value.path, 'Alpha', { x: 20, y: 30 })
+  expect(vi.spyOn(b.ctx.contextMenus, 'open')).toHaveBeenLastCalledWith(target, { x: 20, y: 30 })
+  const active = b.ctx.contextMenus.active as ReturnType<typeof createSnapshotStore<ContextMenuTarget | null>>
+  active.set(target)
+  browser.openWorkspaceMenu(target.value.workspaceId, target.value.path, 'Alpha', { x: 20, y: 30 }, 'toggle')
+  expect(vi.spyOn(b.ctx.contextMenus, 'close')).toHaveBeenCalledOnce()
+  const menu = b.ctx.contextMenus.resolve(target)
+  await menu.ready
+  expect(menu.source.getSnapshot().map(item => item.id)).toEqual(['workspace.rename/rename', 'workspace.delete/delete'])
+  menu.select('workspace.rename/rename')
+  expect(browser.hooks.workspaceActionRequest.getSnapshot()).toEqual({ action: 'rename', workspaceId: 'alpha', displayTitle: 'Alpha', storedTitle: 'alpha' })
+  browser.settleWorkspaceAction()
+  const removed = b.ctx.contextMenus.resolve(target)
+  await removed.ready
+  b.setWorkspaces(workspaceState([]))
+  removed.select('workspace.delete/delete')
+  expect(browser.hooks.workspaceActionRequest.getSnapshot()).toBeNull()
+  b.setWorkspaces(workspaceState([workspace('alpha', [])]))
+  const denied = b.ctx.contextMenus.resolve(target)
+  await denied.ready
+  b.accessSource.mockReturnValueOnce(createSnapshotStore(false))
+  denied.select('workspace.delete/delete')
+  expect(browser.hooks.workspaceActionRequest.getSnapshot()).toBeNull()
+  const deletion = b.ctx.contextMenus.resolve(target)
+  await deletion.ready
+  deletion.select('workspace.delete/delete')
+  expect(browser.hooks.workspaceActionRequest.getSnapshot()?.action).toBe('delete')
+  const pending = b.ctx.contextMenus.resolve(target)
+  await pending.ready
+  await fiber.dispose()
+  expect(pending.source.getSnapshot()).toEqual([])
+})
diff --git a/packages/client/ui-workspace/tests/browser-styles.client.spec.ts b/packages/client/ui-workspace/tests/browser-styles.client.spec.ts
index 1a30b879ef..aba3fa9b0d 100644
--- a/packages/client/ui-workspace/tests/browser-styles.client.spec.ts
+++ b/packages/client/ui-workspace/tests/browser-styles.client.spec.ts
@@ -34,6 +34,13 @@ const declarations = (selector: string): Map<string, string> | undefined => decl
 const rowDeclarations = (selector: string): Map<string, string> | undefined => declarationsFrom(rowsCss, selector)
 
 describe('WorkspaceBrowser.module.css list', () => {
+  it('hides touch timestamps without hiding pending-interaction labels', () => {
+    const touch = /@media \(hover: none\) \{([\s\S]*?)\n\}/.exec(rowsCss)?.[1]
+    expect(touch).toContain('.sessionRow .timestamp')
+    expect(touch).not.toMatch(/\.sessionRow(?:\.selected)? \.time[\s,{]/)
+    expect(rowDeclarations('.sessionRow .pinnedAction')?.get('order')).toBe('-1')
+  })
+
   const root = declarations('.root')
   const listArea = declarations('.listArea')
   const list = declarations('.list')
diff --git a/packages/client/ui-workspace/tests/host-home-staleness.client.spec.tsx b/packages/client/ui-workspace/tests/host-home-staleness.client.spec.tsx
index 041365805d..65a2a8c71a 100644
--- a/packages/client/ui-workspace/tests/host-home-staleness.client.spec.tsx
+++ b/packages/client/ui-workspace/tests/host-home-staleness.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 /**
  * Host home reaches the browsing region through the assembled renderer, which
@@ -39,6 +40,7 @@ async function bench() {
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
   runtime.slots.installLocale(locale)
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   await runtime.workspaces.update((draft) => {
     draft.items = [{
       workspaceId: 'w1' as WorkspaceId, title: 'Project', path: '/home/u/Documents/project',
diff --git a/packages/client/ui-workspace/tests/rename-assembly.client.spec.tsx b/packages/client/ui-workspace/tests/rename-assembly.client.spec.tsx
index 274f595533..8cf72ecf54 100644
--- a/packages/client/ui-workspace/tests/rename-assembly.client.spec.tsx
+++ b/packages/client/ui-workspace/tests/rename-assembly.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { apply as applyMenus, inject as injectMenus } from '@deepseek-ai/dsh-client-ui-context-menu/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 /**
  * The session-rename assembly chain on SlotTestRuntime (real apply, real
@@ -47,6 +48,7 @@ async function createRuntime(): Promise<SlotTestRuntime> {
   const locale = new LocaleRuntime(runtime.ctx)
   runtime.ctx.provide('locale', locale)
   runtime.slots.installLocale(locale)
+  await runtime.mount({ inject: [...injectMenus], apply: applyMenus })
   return runtime
 }
 
@@ -111,27 +113,27 @@ describe('session rename through the assembled browser', () => {
         },
       )
     }
-    // `order` places plugin rows after the shipped rows (100/200/300/400/450)
-    // even when the later registration has the lower shadowing priority
-    // assigned to dynamic browser packages; the first plugin row opens the
-    // plugin group with a hairline.
     registerAction('export', 500, -1, 'Export action')
-    registerAction('last', 600, -2, 'Last action')
+    registerAction('last', 700, -2, 'Last action')
     const view = runtime.renderRoot()
 
     const row = (await view.findByText('Persisted title')).closest('[role="treeitem"]')!
     const trigger = within(row as HTMLElement).getByLabelText('会话“Persisted title”的操作')
     fireEvent.click(trigger)
+    await view.findByRole('menuitem', { name: '置顶会话' })
     expect(view.getAllByRole('menuitem').map(item => item.textContent)).toEqual([
-      '置顶会话', '重命名', '分叉会话', '归档会话', '复制 Session ID', 'Export action', 'Last action',
+      '置顶会话', '重命名', '分叉会话', '复制 Session ID', 'Export action', 'Last action', '归档会话',
     ])
-    expect(view.getAllByRole('separator')).toHaveLength(1)
+    expect(view.getAllByRole('separator')).toHaveLength(3)
     const last = view.getByRole('menuitem', { name: 'Last action' })
     const exportRow = view.getByRole('menuitem', { name: 'Export action' })
     trigger.focus()
     fireEvent.keyDown(trigger, { key: 'End' })
+    const archive = view.getByRole('menuitem', { name: '归档会话' })
+    expect(document.activeElement).toBe(archive)
+    fireEvent.keyDown(archive, { key: 'ArrowUp' })
     expect(document.activeElement).toBe(last)
-    fireEvent.keyDown(last, { key: 'ArrowUp' })
+    fireEvent.keyDown(document.activeElement!, { key: 'ArrowUp' })
     expect(document.activeElement).toBe(exportRow)
     fireEvent.click(exportRow)
     expect(selected).toHaveBeenCalledWith('export', SID, 'Persisted title')
@@ -148,7 +150,7 @@ describe('session rename through the assembled browser', () => {
       else Object.defineProperty(navigator, 'clipboard', clipboard)
     })
     fireEvent.click(trigger)
-    fireEvent.click(view.getByRole('menuitem', { name: '复制 Session ID' }))
+    fireEvent.click(await view.findByRole('menuitem', { name: '复制 Session ID' }))
     expect(view.queryByRole('menu')).toBeNull()
     expect(writeText).toHaveBeenCalledExactlyOnceWith(SID)
     await view.findByText('Session ID 已复制')
@@ -174,7 +176,7 @@ describe('session rename through the assembled browser', () => {
     // The current session's group auto-expands; open the row's action menu.
     const row = (await view.findByText('旧标题')).closest('[role="treeitem"]')!
     fireEvent.click(within(row as HTMLElement).getByLabelText('会话“旧标题”的操作'))
-    fireEvent.click(view.getByRole('menuitem', { name: '重命名', hidden: true }))
+    fireEvent.click(await view.findByRole('menuitem', { name: '重命名' }))
     // The rename row dismissed the menu; the dialog lives in the overlay list.
     expect(view.queryByRole('menu')).toBeNull()
 
@@ -216,7 +218,7 @@ describe('session rename through the assembled browser', () => {
 
     const row = (await view.findByText('旧标题')).closest('[role="treeitem"]')!
     fireEvent.click(within(row as HTMLElement).getByLabelText('会话“旧标题”的操作'))
-    fireEvent.click(view.getByRole('menuitem', { name: '重命名', hidden: true }))
+    fireEvent.click(await view.findByRole('menuitem', { name: '重命名' }))
     const input = await view.findByLabelText('会话名称')
     fireEvent.change(input, { target: { value: '新名' } })
     fireEvent.click(view.getByRole('button', { name: '重命名' }))
diff --git a/packages/client/ui-workspace/tests/rows.client.spec.tsx b/packages/client/ui-workspace/tests/rows.client.spec.tsx
index 10a9289311..74d908fa9d 100644
--- a/packages/client/ui-workspace/tests/rows.client.spec.tsx
+++ b/packages/client/ui-workspace/tests/rows.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, createEvent, fireEvent, render, screen } from '@testing-library/react'
 import type { ComponentProps } from 'react'
@@ -6,9 +7,8 @@ import type { WorkspaceId } from '@deepseek-ai/dsh-api-workspace-controller/clie
 import type { SessionId } from '@deepseek-ai/dsh-session/types'
 import { allowAllAccess, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import { en as commonEn } from '@deepseek-ai/dsh-client-locale/src/locales/en.ts'
-import { HoverCardGroup, MenuItemButton, Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
+import { HoverCardGroup, Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
-import type { MenuOpenState, SessionRowOwnerProps } from '../src/client/contract/slots.ts'
 import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
 import type { RowDragProps } from '../src/client/rows/Rows.tsx'
 import {
@@ -16,8 +16,11 @@ import {
 } from '../src/client/rows/Rows.tsx'
 import type { GroupNode, SearchResultNode, SessionNode } from '../src/client/tree.ts'
 import { en, zh } from '../src/client/locales.ts'
+import rowCss from '../src/client/rows/Rows.module.css'
 
 afterEach(cleanup)
+beforeEach(() => { vi.stubGlobal('matchMedia', (query: string) => ({ matches: query === '(any-hover: hover)' })) })
+afterEach(() => { vi.unstubAllGlobals() })
 
 const t = makeTranslate(zh, commonZh) as never
 const tEn = makeTranslate(en, commonEn) as never
@@ -49,24 +52,22 @@ function realDoubleClick(el: Element): void {
   fireEvent.doubleClick(el)
 }
 
-function SessionNodeItem({
-  renderSlot = renderNoRowEntries, onRenameRequest = () => {}, useSessionAccess = allowAllAccess.useSessionAccess, ...props
-}: Omit<
-  SessionNodeItemProps, 'renderSlot' | 'onRenameRequest' | 'useSessionAccess'
-> & Partial<Pick<SessionNodeItemProps, 'renderSlot' | 'onRenameRequest' | 'useSessionAccess'>>) {
-  return (
-    <SessionNodeItemComponent
-      {...props} renderSlot={renderSlot} onRenameRequest={onRenameRequest} useSessionAccess={useSessionAccess}
-    />
-  )
+function SessionNodeItem({ renderSlot = renderNoRowEntries, onRenameRequest = () => {}, openSessionMenu = vi.fn(),
+  useContextMenuTarget = select => select(null), useSessionAccess = allowAllAccess.useSessionAccess, ...props }: Omit<
+    SessionNodeItemProps, 'renderSlot' | 'onRenameRequest' | 'openSessionMenu' | 'useContextMenuTarget' | 'useSessionAccess' | 'useContextMenu'
+  > & Partial<Pick<SessionNodeItemProps, 'renderSlot' | 'onRenameRequest' | 'openSessionMenu' | 'useContextMenuTarget' | 'useSessionAccess' | 'useContextMenu'>>) {
+  return <SessionNodeItemComponent {...props} renderSlot={renderSlot} onRenameRequest={onRenameRequest}
+    useContextMenu={props.useContextMenu ?? contextMenuHook((target, point) => { if (target.kind === 'session') openSessionMenu(target.value.sessionId, target.value.displayTitle, point) })} openSessionMenu={openSessionMenu} useContextMenuTarget={useContextMenuTarget} useSessionAccess={useSessionAccess} />
 }
 
 // Direct header specs hold every access answer unless the case refuses one.
 function ProjectRowItem({
-  useRemoteAccess = allowAllAccess.useRemoteAccess, useWorkspaceAccess = allowAllAccess.useWorkspaceAccess, ...props
-}: Omit<ProjectRowItemProps, 'useRemoteAccess' | 'useWorkspaceAccess'>
-  & Partial<Pick<ProjectRowItemProps, 'useRemoteAccess' | 'useWorkspaceAccess'>>) {
-  return <ProjectRowItemComponent {...props} useRemoteAccess={useRemoteAccess} useWorkspaceAccess={useWorkspaceAccess} />
+  useRemoteAccess = allowAllAccess.useRemoteAccess, useWorkspaceAccess = allowAllAccess.useWorkspaceAccess,
+  openWorkspaceMenu = vi.fn(), useContextMenuTarget = select => select(null), ...props
+}: Omit<ProjectRowItemProps, 'useRemoteAccess' | 'useWorkspaceAccess' | 'openWorkspaceMenu' | 'useContextMenuTarget' | 'useContextMenu'>
+  & Partial<Pick<ProjectRowItemProps, 'useRemoteAccess' | 'useWorkspaceAccess' | 'openWorkspaceMenu' | 'useContextMenuTarget' | 'useContextMenu'>>) {
+  return <ProjectRowItemComponent {...props} useRemoteAccess={useRemoteAccess} useWorkspaceAccess={useWorkspaceAccess}
+    useContextMenu={props.useContextMenu ?? contextMenuHook((target, point) => { if (target.kind === 'workspace') openWorkspaceMenu(target.value.workspaceId, target.value.path, target.value.displayTitle, point) })} openWorkspaceMenu={openWorkspaceMenu} useContextMenuTarget={useContextMenuTarget} />
 }
 
 /** Half detection reads the row rect; jsdom rects are all-zero by default. */
@@ -415,6 +416,11 @@ describe('workspace browser rows', () => {
       }
 
       geometry(320, 180)
+      const touch = new Event('pointerover', { bubbles: true })
+      Object.defineProperty(touch, 'pointerType', { value: 'touch' })
+      fireEvent(row, touch)
+      vi.advanceTimersByTime(1000)
+      expect(title.scrollLeft).toBe(0)
       fireEvent.pointerEnter(row)
       // The first frame only records the clock; travel begins on the second.
       vi.advanceTimersByTime(16)
@@ -462,6 +468,31 @@ describe('workspace browser rows', () => {
     }
   })
 
+  it('continues a title crawl while its context menu owns the hover highlight', () => {
+    vi.useFakeTimers()
+    vi.stubGlobal('matchMedia', vi.fn(() => ({ matches: false })))
+    try {
+      const node: SessionNode = { id: sid('context-crawl'), title: 'A long Session title', blank: false,
+        running: false, runningSubagentCount: 0, completed: false, updatedAt: 0, pinned: false, archived: false }
+      const props = { node, currentId: undefined, now: 0, onOpen: vi.fn(), t }
+      const view = render(<SessionNodeItem {...props} />)
+      const row = screen.getByRole('treeitem')
+      const title = screen.getByText(node.title)
+      Object.defineProperty(title, 'scrollWidth', { value: 400, configurable: true })
+      Object.defineProperty(title, 'clientWidth', { value: 160, configurable: true })
+      fireEvent.pointerEnter(row)
+      vi.advanceTimersByTime(1616)
+      expect(title.scrollLeft).toBeCloseTo(48)
+      view.rerender(<SessionNodeItem {...props} useContextMenuTarget={select => select({ kind: 'session',
+        value: { sessionId: node.id, displayTitle: node.title } })} />)
+      fireEvent.pointerLeave(row)
+      vi.advanceTimersByTime(1600)
+      expect(title.scrollLeft).toBeCloseTo(96)
+      view.rerender(<SessionNodeItem {...props} />)
+      expect(title.scrollLeft).toBe(0)
+    } finally { vi.useRealTimers(); vi.unstubAllGlobals() }
+  })
+
   it('jumps a clipped title to its far edge under reduced motion', () => {
     vi.stubGlobal('matchMedia', vi.fn((query: string) => ({ matches: query === '(prefers-reduced-motion: reduce)' })))
     try {
@@ -624,34 +655,21 @@ describe('workspace browser rows', () => {
     expect(screen.getByRole('treeitem').querySelector('[data-state="done"]')).not.toBeNull()
   })
 
-  it('workspace row menu opens on the ellipsis, renames, and shows the danger delete row', () => {
-    const onRename = vi.fn()
-    const onDelete = vi.fn()
-    const onToggle = vi.fn()
+  it('workspace right-click and ellipsis capture the row without toggling expansion', () => {
+    const openWorkspaceMenu = vi.fn(), onToggle = vi.fn()
     const group: GroupNode = {
       key: 'project', workspaceId: wid('project'), cwd: '/projects/project', createdAt: 0, label: 'Project',
       sessionCount: 0, expanded: false, containsCurrent: false, sessions: [],
     }
-    render(<ProjectRowItem
-      group={group} onToggle={onToggle} onCreate={vi.fn()}
-      actions={{ rename: onRename, delete: onDelete }} t={t}
-    />)
+    const view = render(<ProjectRowItem group={group} onToggle={onToggle} onCreate={vi.fn()} openWorkspaceMenu={openWorkspaceMenu} t={t} />)
+    fireEvent.contextMenu(screen.getByRole('treeitem'), { clientX: 36, clientY: 48 })
+    expect(openWorkspaceMenu).toHaveBeenLastCalledWith(wid('project'), '/projects/project', 'Project', { x: 36, y: 48 })
     fireEvent.click(screen.getByRole('button', { name: '工作区“Project”的操作' }))
-    // Opening the menu neither toggles the group nor renames yet.
+    expect(openWorkspaceMenu).toHaveBeenLastCalledWith(wid('project'), '/projects/project', 'Project', { x: 0, y: 0 }, 'toggle')
     expect(onToggle).not.toHaveBeenCalled()
-    expect(screen.getByRole('menuitem', { name: '删除工作区' }).className).toMatch(/danger/)
-    fireEvent.click(screen.getByRole('menuitem', { name: '重命名' }))
-    expect(onRename).toHaveBeenCalledOnce()
-    expect(screen.queryByRole('menu')).toBeNull()
-    fireEvent.click(screen.getByRole('button', { name: '工作区“Project”的操作' }))
-    fireEvent.click(screen.getByRole('menuitem', { name: '删除工作区' }))
-    expect(screen.queryByRole('menu')).toBeNull()
-    expect(onRename).toHaveBeenCalledOnce()
-    expect(onDelete).toHaveBeenCalledOnce()
-    // Escape closes without selecting (Menu onClose path).
-    fireEvent.click(screen.getByRole('button', { name: '工作区“Project”的操作' }))
-    fireEvent.keyDown(document, { key: 'Escape' })
-    expect(screen.queryByRole('menu')).toBeNull()
+    view.rerender(<ProjectRowItem group={group} onToggle={onToggle} onCreate={vi.fn()} t={t}
+      useContextMenuTarget={select => select({ kind: 'workspace', value: { workspaceId: wid('project'), path: group.cwd!, displayTitle: 'Project' } })} />)
+    expect(screen.getByRole('button', { name: '工作区“Project”的操作' }).getAttribute('aria-expanded')).toBe('true')
   })
 
   it('workspace row offers only the actions its Workspace access snapshot allows', () => {
@@ -663,22 +681,17 @@ describe('workspace browser rows', () => {
     const useWorkspaceAccess = vi.fn((_workspaceId: WorkspaceId, endpoint: string) => allowed.has(endpoint))
     const drag = { start: vi.fn(), end: vi.fn() }
     const props = {
-      group, onToggle: vi.fn(), onCreate: vi.fn(), actions: { rename: vi.fn(), delete: vi.fn() }, drag, t,
+      group, onToggle: vi.fn(), onCreate: vi.fn(), drag, t,
     }
     const view = render(<ProjectRowItem {...props} useWorkspaceAccess={useWorkspaceAccess} />)
     expect(useWorkspaceAccess).toHaveBeenCalledWith(wid('project'), 'session/create')
-    // No New Session button, no drag handle, and a menu holding only the allowed rename row.
+    // Mutations stay gated while the menu remains available for file-manager and plugin actions.
     expect(screen.queryByRole('button', { name: '在“Project”中新建会话' })).toBeNull()
     expect(screen.getByRole('treeitem').getAttribute('draggable')).toBe('false')
-    fireEvent.click(screen.getByRole('button', { name: '工作区“Project”的操作' }))
-    expect(screen.getByRole('menuitem', { name: '重命名' })).toBeTruthy()
-    expect(screen.queryByRole('menuitem', { name: '删除工作区' })).toBeNull()
-    fireEvent.keyDown(document, { key: 'Escape' })
-
-    // Without rename either, the header carries no menu at all.
+    expect(screen.getByRole('button', { name: '工作区“Project”的操作' })).toBeTruthy()
     allowed.clear()
     view.rerender(<ProjectRowItem {...props} useWorkspaceAccess={useWorkspaceAccess} />)
-    expect(screen.queryByRole('button', { name: '工作区“Project”的操作' })).toBeNull()
+    expect(screen.getByRole('button', { name: '工作区“Project”的操作' })).toBeTruthy()
 
     // Every answer allowed restores the button, the full menu, and the drag handle.
     for (const endpoint of ['session/create', 'workspace/rename', 'workspace/delete', 'workspace/insertBefore']) {
@@ -702,6 +715,7 @@ describe('workspace browser rows', () => {
     expect(useRemoteAccess).toHaveBeenCalledWith('session/create')
     expect(useWorkspaceAccess).not.toHaveBeenCalled()
     expect(screen.queryByRole('button', { name: /新建会话/ })).toBeNull()
+    expect(fireEvent.contextMenu(screen.getByRole('treeitem'))).toBe(true)
   })
 
   it('session row drags and renames from its title only while its access snapshot allows each', () => {
@@ -938,83 +952,24 @@ describe('workspace browser rows', () => {
     })
   })
 
-  it('session row menu opens without opening the session and Escape closes it', () => {
-    const onOpen = vi.fn()
+  it('routes both context and More gestures to the clicked Session without selecting it', () => {
+    const onOpen = vi.fn(), openSessionMenu = vi.fn()
     const node: SessionNode = {
       id: sid('s1'), title: 'One', blank: false, running: false,
       runningSubagentCount: 0, completed: false, updatedAt: 0, pinned: false, archived: false,
     }
-    render(<SessionNodeItem node={node} currentId={undefined} now={0} onOpen={onOpen} t={t} />)
-    const trigger = screen.getByRole('button', { name: '会话“One”的操作' })
-    fireEvent.click(trigger)
-    expect(screen.getByRole('menu')).toBeTruthy()
-    expect(onOpen).not.toHaveBeenCalled()
-    // Escape closes without selecting (Menu onClose path).
-    fireEvent.keyDown(document, { key: 'Escape' })
-    expect(screen.queryByRole('menu')).toBeNull()
-    // The trigger toggles: a second click closes the menu it opened.
-    fireEvent.click(trigger)
-    fireEvent.click(trigger)
-    expect(screen.queryByRole('menu')).toBeNull()
-    expect(onOpen).not.toHaveBeenCalled()
-  })
-
-  it('renders the menu list with the row identity and open state, and returns focus to the trigger after an entry closes it', async () => {
-    const onOpen = vi.fn()
-    const onEntry = vi.fn()
-    const rendered = vi.fn()
-    // A stub satisfies the generic render signature only with erased parameter
-    // types; it narrows the owner and the occurrence options itself.
-    const renderSlot: RowRenderSlot = (name: RowSlotName, owner: object, opts?: object) => {
-      const { sessionId, displayTitle } = owner as SessionRowOwnerProps
-      const hookContext = opts !== undefined && 'hookContext' in opts ? opts.hookContext : undefined
-      rendered(name, owner, hookContext)
-      if (name !== 'sidebar.workspaces.session.menu.item') return null
-      // The stub stands in for the renderer, which binds this occurrence's
-      // hookContext into the entries' useMenuOpenState hook.
-      const [open, setMenuOpen] = hookContext as MenuOpenState
-      return (
-        <MenuItemButton onSelect={() => {
-          setMenuOpen(false)
-          onEntry(sessionId, displayTitle, open)
-        }}>
-          Export
-        </MenuItemButton>
-      )
-    }
-    const node: SessionNode = {
-      id: sid('s1'), title: 'One', blank: false, running: false,
-      runningSubagentCount: 0, completed: false, updatedAt: 0, pinned: false, archived: false,
-    }
-    render(<SessionNodeItem node={node} currentId={undefined} now={0} onOpen={onOpen} renderSlot={renderSlot} t={t} />)
-
-    // Both lists receive the row identity; only the menu list carries the open state.
-    expect(rendered).toHaveBeenCalledWith(
-      'sidebar.workspaces.session.menu.item', { sessionId: node.id, displayTitle: 'One' }, [false, expect.any(Function)],
-    )
-    expect(rendered).toHaveBeenCalledWith(
-      'sidebar.workspaces.session.row.action', { sessionId: node.id, displayTitle: 'One' }, undefined,
-    )
-    expect(screen.queryByRole('menuitem')).toBeNull()
-    const trigger = screen.getByRole('button', { name: '会话“One”的操作' })
-    trigger.focus()
-    fireEvent.click(trigger)
-    expect(screen.getAllByRole('menuitem').map(item => item.textContent)).toEqual(['Export'])
-    expect(rendered).toHaveBeenCalledWith(
-      'sidebar.workspaces.session.menu.item', { sessionId: node.id, displayTitle: 'One' }, [true, expect.any(Function)],
-    )
-    const entry = screen.getByRole('menuitem', { name: 'Export' })
-    expect(screen.getByRole('treeitem').contains(entry)).toBe(false)
-    entry.focus()
-    expect(fireEvent.keyDown(entry, { key: 'Enter', code: 'Enter' })).toBe(true)
-    expect(onOpen).not.toHaveBeenCalled()
-    fireEvent.click(entry)
-    expect(onEntry).toHaveBeenCalledWith(node.id, 'One', true)
-    // The entry dismissed the menu through the state pair; the list returns focus.
-    expect(screen.queryByRole('menu')).toBeNull()
-    await act(async () => { await Promise.resolve() })
-    expect(document.activeElement).toBe(trigger)
+    render(<SessionNodeItem node={node} currentId={sid('other')} now={0} onOpen={onOpen} openSessionMenu={openSessionMenu} t={t} />)
+    fireEvent.contextMenu(screen.getByRole('treeitem'), { clientX: 31, clientY: 47 })
+    expect(openSessionMenu).toHaveBeenLastCalledWith(node.id, 'One', { x: 31, y: 47 })
+    fireEvent.pointerDown(screen.getByRole('button', { name: '会话“One”的操作' }))
+    fireEvent.click(screen.getByRole('button', { name: '会话“One”的操作' }))
+    expect(openSessionMenu).toHaveBeenLastCalledWith(node.id, 'One', { x: 0, y: 0 }, 'toggle')
     expect(onOpen).not.toHaveBeenCalled()
+    cleanup()
+    render(<SessionNodeItem node={{ ...node, blank: true }} currentId={sid('other')} now={0} onOpen={onOpen} openSessionMenu={openSessionMenu} t={t} />)
+    openSessionMenu.mockClear()
+    fireEvent.contextMenu(screen.getByRole('treeitem'))
+    expect(openSessionMenu).not.toHaveBeenCalled()
   })
 
   it('renders the row action list inside the actions area after the menu trigger', () => {
@@ -1128,7 +1083,7 @@ describe('workspace browser rows', () => {
         id: sid('s1'), title: 'Hovered', blank: false, running: true,
         runningSubagentCount: 0, completed: false, updatedAt: 0, pinned: false, archived: false,
       }
-      render(<SessionNodeItem node={node} currentId={undefined} now={60_000} onOpen={vi.fn()} t={t} />)
+      const view = render(<SessionNodeItem node={node} currentId={undefined} now={60_000} onOpen={vi.fn()} t={t} />)
       const wrapper = screen.getByRole('treeitem').parentElement as HTMLElement
       fireEvent.pointerEnter(wrapper)
       act(() => { vi.advanceTimersByTime(800) })
@@ -1138,7 +1093,8 @@ describe('workspace browser rows', () => {
       expect(screen.getAllByText('进行中')).toHaveLength(2)
       fireEvent.pointerLeave(wrapper)
       // Menu open (disabled=true) suppresses the card for the same hover.
-      fireEvent.click(screen.getByRole('button', { name: '会话“Hovered”的操作' }))
+      view.rerender(<SessionNodeItem node={node} currentId={undefined} now={60_000} onOpen={vi.fn()} t={t}
+        useContextMenuTarget={select => select({ kind: 'session', value: { sessionId: node.id, displayTitle: node.title } })} />)
       fireEvent.pointerEnter(wrapper)
       act(() => { vi.advanceTimersByTime(1000) })
       expect(screen.queryByText('1分钟前')).toBeNull()
@@ -1165,6 +1121,8 @@ describe('workspace browser rows', () => {
       expect(row.querySelector('[data-state="ongoing"]')).toBeNull()
       expect(row.textContent).toContain(label)
       expect(title.nextElementSibling?.textContent).toBe(compactLabel)
+      expect(rowCss.timestamp).toBeTypeOf('string')
+      expect(title.nextElementSibling?.firstElementChild?.classList.contains(rowCss.timestamp!)).toBe(false)
       expect(row.querySelector('[class*="time"]')?.getAttribute('aria-hidden')).toBe('true')
       expect(row.textContent).not.toContain('刚刚')
 
diff --git a/packages/client/ui-workspace/tests/session-actions.client.spec.tsx b/packages/client/ui-workspace/tests/session-actions.client.spec.tsx
index 6fc2f0ad4b..20a1f0a043 100644
--- a/packages/client/ui-workspace/tests/session-actions.client.spec.tsx
+++ b/packages/client/ui-workspace/tests/session-actions.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 /**
  * The shipped Session row actions rendered directly with hand-built props:
  * the menu rows, hover buttons, dialogs, and global notices. Every action
@@ -23,21 +24,17 @@ import type { ArchiveToastEntryProps } from '../src/client/contract/toast.ts'
 import { en as commonEn } from '@deepseek-ai/dsh-client-locale/src/locales/en.ts'
 import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
 import type {
-  MenuOpenState, RowToast, RowToastState, SessionArchiveConfirmInjected, SessionArchiveConfirmRequest,
+  RowToast, RowToastState, SessionArchiveConfirmInjected, SessionArchiveConfirmRequest,
   SessionRenameDialogInjected, SessionRenameTarget,
 } from '../src/client/contract/slots.ts'
 import {
-  ArchiveSessionMenuItem, ArchiveSessionRowButton, SessionArchiveConfirmDialog,
+  ArchiveSessionRowButton, SessionArchiveConfirmDialog,
 } from '../src/client/session-actions/ArchiveSession.tsx'
-import { ForkSessionMenuItem } from '../src/client/session-actions/ForkSession.tsx'
-import { PinSessionMenuItem, PinSessionRowButton } from '../src/client/session-actions/PinSession.tsx'
-import { RenameSessionMenuItem, SessionRenameDialog } from '../src/client/session-actions/RenameSession.tsx'
+import { PinSessionRowButton } from '../src/client/session-actions/PinSession.tsx'
+import { SessionRenameDialog } from '../src/client/session-actions/RenameSession.tsx'
 import { RowActionToast } from '../src/client/session-actions/RowActionToast.tsx'
-import { SessionIdMenuItem } from '../src/client/session-actions/SessionId.tsx'
 import { createWorkspaceViewStore } from '../src/client/stores.ts'
 import { en, zh } from '../src/client/locales.ts'
-import { ShortcutRegistry } from '../../shortcuts/src/client/registry.ts'
-import type { ShortcutCommandId } from '@deepseek-ai/dsh-client-shortcuts/client'
 
 afterEach(cleanup)
 
@@ -82,51 +79,25 @@ const standard: GlobalStandardProps = {
   useSessionStatus: hook(noStatus),
   useSessionRetainInfo: () => undefined,
   usePanelInfo,
-  useResource,
+  useContextMenu: contextMenuHook(), useResource,
   useWorkspaces: hook(workspaces),
   ...allowAllAccess,
 }
 
-type MenuRowProps = PropsRuntime<'sidebar.workspaces.session.menu.item'> & PropsLocale<'workspace'>
 type ActionRowProps = PropsRuntime<'sidebar.workspaces.session.row.action'> & PropsLocale<'workspace'>
 type OverlayProps = PropsRuntime<'shell.overlay'> & PropsLocale<'workspace'>
 
-/** Owner share, standard seat, locale seat, and the bound open-state hook of one menu row. */
-function menuRow(menu: MenuOpenState): MenuRowProps {
-  return { ...ROW, useMenuOpenState: () => menu, useShortcuts: hook([]), t, ...standard }
-}
-
 /** Owner share, standard seat, and locale seat of one hover button. */
 const actionRow: ActionRowProps = { ...ROW, t, ...standard }
 
 /** Standard and locale seats of a `shell.overlay` entry (no owner share). */
 const overlay: OverlayProps = { t, ...standard }
 
-/** An open menu whose setter records the entries' dismissal. */
-function openMenu() {
-  const setMenuOpen = vi.fn()
-  const state: MenuOpenState = [true, setMenuOpen]
-  return { state, setMenuOpen }
-}
-
 /** Position of a mock's `nth` call in the global call sequence (a call that never happened sorts last). */
 function callOrder(fn: { mock: { invocationCallOrder: readonly number[] } }, nth = 0): number {
   return fn.mock.invocationCallOrder[nth] ?? Number.POSITIVE_INFINITY
 }
 
-describe('Session ID action', () => {
-  it.each([t, tEn])('dismisses the menu before copying the complete row ID', (translate) => {
-    const { state, setMenuOpen } = openMenu()
-    const sessionId = sid('session-c4421b66-252e-44c0-80ed-6e320abeba25')
-    const copySessionId = vi.fn(async () => {})
-    render(<SessionIdMenuItem {...menuRow(state)} sessionId={sessionId} t={translate} copySessionId={copySessionId} />)
-    fireEvent.click(screen.getByRole('menuitem', { name: translate('menu.sessionId') }))
-    expect(setMenuOpen).toHaveBeenCalledWith(false)
-    expect(copySessionId).toHaveBeenCalledExactlyOnceWith(sessionId)
-    expect(callOrder(setMenuOpen)).toBeLessThan(callOrder(copySessionId))
-  })
-})
-
 describe('pin action', () => {
   /** The pin share over fixed membership: the bound Set hooks and the two callbacks the entries call. */
   const pinShare = (pinned: readonly string[] = [], archived: readonly string[] = []) => ({
@@ -136,28 +107,6 @@ describe('pin action', () => {
     unpinSession: vi.fn(),
   })
 
-  it('menu row closes the menu, then pins an unpinned Session', () => {
-    const { state, setMenuOpen } = openMenu()
-    const pin = pinShare()
-    render(<PinSessionMenuItem {...menuRow(state)} {...pin} />)
-    fireEvent.click(screen.getByRole('menuitem', { name: '置顶会话' }))
-    expect(pin.pinSession).toHaveBeenCalledWith(sid('one'))
-    expect(pin.unpinSession).not.toHaveBeenCalled()
-    expect(setMenuOpen).toHaveBeenCalledWith(false)
-    expect(callOrder(setMenuOpen)).toBeLessThan(callOrder(pin.pinSession))
-  })
-
-  it('menu row closes the menu, then unpins a pinned Session', () => {
-    const { state, setMenuOpen } = openMenu()
-    const pin = pinShare(['one'])
-    render(<PinSessionMenuItem {...menuRow(state)} {...pin} />)
-    fireEvent.click(screen.getByRole('menuitem', { name: '取消置顶' }))
-    expect(pin.unpinSession).toHaveBeenCalledWith(sid('one'))
-    expect(pin.pinSession).not.toHaveBeenCalled()
-    expect(setMenuOpen).toHaveBeenCalledWith(false)
-    expect(callOrder(setMenuOpen)).toBeLessThan(callOrder(pin.unpinSession))
-  })
-
   it('row button toggles the pin', () => {
     const pin = pinShare()
     const view = render(<PinSessionRowButton {...actionRow} {...pin} />)
@@ -172,12 +121,7 @@ describe('pin action', () => {
   })
 
   it('offers neither toggle while the access snapshot excludes it for this Session', () => {
-    const { state } = openMenu()
     const useSessionAccess = vi.fn((_id: SessionId, endpoint: string) => endpoint !== 'workspace/pinSession')
-    const menu = render(<PinSessionMenuItem {...menuRow(state)} {...pinShare()} useSessionAccess={useSessionAccess} />)
-    expect(menu.container.innerHTML).toBe('')
-    expect(useSessionAccess).toHaveBeenCalledWith(sid('one'), 'workspace/pinSession')
-    menu.unmount()
     const button = render(<PinSessionRowButton {...actionRow} {...pinShare()} useSessionAccess={useSessionAccess} />)
     expect(button.container.innerHTML).toBe('')
     button.unmount()
@@ -188,60 +132,22 @@ describe('pin action', () => {
   })
 
   it('offers nothing on an archived Session', () => {
-    const { state } = openMenu()
     const pin = pinShare(['one'], ['one'])
-    const menu = render(<PinSessionMenuItem {...menuRow(state)} {...pin} />)
-    expect(menu.container.childElementCount).toBe(0)
     const button = render(<PinSessionRowButton {...actionRow} {...pin} />)
-    expect(button.container.childElementCount).toBe(0)
-    expect(screen.queryByRole('button')).toBeNull()
+    expect(button.container.innerHTML).toBe('')
   })
 })
 
 describe('archive action', () => {
-  /** The archive share over fixed membership: the bound Set hook and the two callbacks the entries call. */
   const archiveShare = (archived: readonly string[] = []) => ({
-    useArchived: hook(idSet(...archived)),
-    archiveSession: vi.fn(),
-    unarchiveSession: vi.fn(),
+    useArchived: hook(idSet(...archived)), archiveSession: vi.fn(), unarchiveSession: vi.fn(),
   })
 
-  it('menu row closes the menu, then archives', () => {
-    const { state, setMenuOpen } = openMenu()
-    const archive = archiveShare()
-    render(<ArchiveSessionMenuItem {...menuRow(state)} {...archive} />)
-    const row = screen.getByRole('menuitem', { name: '归档会话' })
-    // Archive is not destructive (log and accounting slot remain): no danger styling.
-    expect(row.className).not.toMatch(/danger/)
-    fireEvent.click(row)
-    expect(archive.archiveSession).toHaveBeenCalledWith(sid('one'))
-    expect(archive.unarchiveSession).not.toHaveBeenCalled()
-    expect(setMenuOpen).toHaveBeenCalledWith(false)
-    expect(callOrder(setMenuOpen)).toBeLessThan(callOrder(archive.archiveSession))
-  })
-
-  it('menu row closes the menu, then restores an archived Session', () => {
-    const { state, setMenuOpen } = openMenu()
-    const archive = archiveShare(['one'])
-    render(<ArchiveSessionMenuItem {...menuRow(state)} {...archive} />)
-    fireEvent.click(screen.getByRole('menuitem', { name: '取消归档' }))
-    expect(archive.unarchiveSession).toHaveBeenCalledWith(sid('one'))
-    expect(archive.archiveSession).not.toHaveBeenCalled()
-    expect(setMenuOpen).toHaveBeenCalledWith(false)
-    expect(callOrder(setMenuOpen)).toBeLessThan(callOrder(archive.unarchiveSession))
-  })
-
-  it('offers neither the archive row nor its button while the access snapshot excludes archiving', () => {
-    const { state } = openMenu()
+  it('offers no archive button without access but checks restore separately', () => {
     const useSessionAccess = vi.fn((_id: SessionId, endpoint: string) => endpoint !== 'workspace/archiveSession')
-    const menu = render(<ArchiveSessionMenuItem {...menuRow(state)} {...archiveShare()} useSessionAccess={useSessionAccess} />)
-    expect(menu.container.innerHTML).toBe('')
-    expect(useSessionAccess).toHaveBeenCalledWith(sid('one'), 'workspace/archiveSession')
-    menu.unmount()
     const button = render(<ArchiveSessionRowButton {...actionRow} {...archiveShare()} useSessionAccess={useSessionAccess} />)
     expect(button.container.innerHTML).toBe('')
     button.unmount()
-    // An archived row asks for its restore endpoint instead.
     const archived = render(<ArchiveSessionRowButton {...actionRow} {...archiveShare(['one'])} useSessionAccess={useSessionAccess} />)
     expect(useSessionAccess).toHaveBeenLastCalledWith(sid('one'), 'workspace/unarchiveSession')
     expect(archived.getByRole('button')).toBeTruthy()
@@ -259,48 +165,6 @@ describe('archive action', () => {
   })
 })
 
-describe('fork and rename rows', () => {
-  it('fork closes the menu, then forks the Session', () => {
-    const { state, setMenuOpen } = openMenu()
-    const forkSession = vi.fn()
-    render(<ForkSessionMenuItem {...menuRow(state)} forkSession={forkSession} />)
-    fireEvent.click(screen.getByRole('menuitem', { name: '分叉会话' }))
-    expect(forkSession).toHaveBeenCalledWith(sid('one'))
-    expect(setMenuOpen).toHaveBeenCalledWith(false)
-    expect(callOrder(setMenuOpen)).toBeLessThan(callOrder(forkSession))
-  })
-
-  it('omits the fork row when the access snapshot excludes session/fork for this Session', () => {
-    const { state } = openMenu()
-    const useSessionAccess = vi.fn(() => false)
-    const { container } = render(
-      <ForkSessionMenuItem {...menuRow(state)} useSessionAccess={useSessionAccess} forkSession={vi.fn()} />,
-    )
-    expect(container.innerHTML).toBe('')
-    expect(useSessionAccess).toHaveBeenCalledWith(sid('one'), 'session/fork')
-  })
-
-  it('omits the rename row when the access snapshot excludes session/rename for this Session', () => {
-    const { state } = openMenu()
-    const useSessionAccess = vi.fn(() => false)
-    const view = render(
-      <RenameSessionMenuItem {...menuRow(state)} useSessionAccess={useSessionAccess} requestSessionRename={vi.fn()} />,
-    )
-    expect(view.container.innerHTML).toBe('')
-    expect(useSessionAccess).toHaveBeenCalledWith(sid('one'), 'session/rename')
-  })
-
-  it('rename closes the menu, then asks for the dialog with the row title', () => {
-    const { state, setMenuOpen } = openMenu()
-    const requestSessionRename = vi.fn()
-    render(<RenameSessionMenuItem {...menuRow(state)} requestSessionRename={requestSessionRename} />)
-    fireEvent.click(screen.getByRole('menuitem', { name: '重命名' }))
-    expect(requestSessionRename).toHaveBeenCalledWith(sid('one'), 'Session title')
-    expect(setMenuOpen).toHaveBeenCalledWith(false)
-    expect(callOrder(setMenuOpen)).toBeLessThan(callOrder(requestSessionRename))
-  })
-})
-
 describe('SessionRenameDialog', () => {
   /** The dialog over a test-owned request source; settling clears the request the way apply does. */
   function renameDialog(renameSession: SessionRenameDialogInjected['renameSession']) {
@@ -657,14 +521,8 @@ describe('RowActionToast', () => {
     ['en', tEn, 'Open the original session to complete migration before creating a branch.', 'Open original session'],
   ] as const)('keeps the %s fork notice after menu unmount and opens only on its action', async (_locale, translate, message, action) => {
     const { dismissToast, openForkSource, notify } = await toastSurface(undefined, translate)
-    const { state, setMenuOpen } = openMenu()
     const forkSession = vi.fn((sessionId: SessionId) => { notify({ kind: 'forkRequiresOpen', sessionId }) })
-    const menu = render(<ForkSessionMenuItem {...menuRow(state)} t={translate} forkSession={forkSession} />)
-
-    fireEvent.click(screen.getByRole('menuitem', { name: translate('menu.fork') }))
-    expect(setMenuOpen).toHaveBeenCalledWith(false)
-    expect(callOrder(setMenuOpen)).toBeLessThan(callOrder(forkSession))
-    menu.unmount()
+    forkSession(ROW.sessionId)
 
     expect(screen.queryByRole('menuitem')).toBeNull()
     expect(screen.getByRole('alert').textContent).toContain(message)
@@ -834,33 +692,3 @@ describe('RowActionToast', () => {
     }
   })
 })
-
-it('shows effective Session shortcuts while menu clicks keep the row target', () => {
-  const shortcuts = new ShortcutRegistry('desktop', 'macos')
-  for (const [action, code] of [['rename', 'KeyR'], ['fork', 'KeyF'], ['archive', 'KeyA']] as const) {
-    shortcuts.register({ id: `session.${action}` as ShortcutCommandId, label: () => action, aliases: [],
-      defaults: {
-        'desktop:macos': { code, modifiers: ['primary', action === 'archive' ? 'shift' : 'alt'] },
-        'desktop:windows': { code, modifiers: ['primary', action === 'archive' ? 'shift' : 'alt'] },
-        'desktop:linux': { code, modifiers: ['primary', action === 'archive' ? 'shift' : 'alt'] },
-      },
-      regions: ['page'], modals: [], resolve: () => ({ status: 'pass' }) })
-  }
-  const requestSessionRename = vi.fn()
-  const forkSession = vi.fn()
-  const archiveSession = vi.fn()
-  const props = { ...menuRow([true, vi.fn()]), useShortcuts: hook(shortcuts.catalog.getSnapshot()) }
-  render(<>
-    <RenameSessionMenuItem {...props} requestSessionRename={requestSessionRename} />
-    <ForkSessionMenuItem {...props} forkSession={forkSession} />
-    <ArchiveSessionMenuItem {...props} useArchived={hook(idSet())} archiveSession={archiveSession} unarchiveSession={vi.fn()} />
-  </>)
-  expect(screen.getAllByRole('menuitem').map(item => item.getAttribute('aria-keyshortcuts')))
-    .toEqual(['Alt+Meta+R', 'Alt+Meta+F', 'Shift+Meta+A'])
-  fireEvent.click(screen.getByRole('menuitem', { name: '重命名' }))
-  fireEvent.click(screen.getByRole('menuitem', { name: '分叉会话' }))
-  fireEvent.click(screen.getByRole('menuitem', { name: '归档会话' }))
-  expect(requestSessionRename).toHaveBeenCalledWith(ROW.sessionId, ROW.displayTitle)
-  expect(forkSession).toHaveBeenCalledWith(ROW.sessionId)
-  expect(archiveSession).toHaveBeenCalledWith(ROW.sessionId)
-})
diff --git a/packages/client/ui-workspace/tests/session-context-menu.client.spec.tsx b/packages/client/ui-workspace/tests/session-context-menu.client.spec.tsx
new file mode 100644
index 0000000000..f2de8a2163
--- /dev/null
+++ b/packages/client/ui-workspace/tests/session-context-menu.client.spec.tsx
@@ -0,0 +1,24 @@
+// @vitest-environment jsdom
+/** Existing Session actions receive the captured owner and one dismissal context. */
+import { cleanup, render } from '@testing-library/react'
+import { afterEach, expect, it, vi } from 'vitest'
+import { SessionId } from '@deepseek-ai/dsh-session/types'
+import type { ComponentProps } from 'react'
+import { SessionMenu } from '../src/client/session-actions/SessionMenu.tsx'
+
+afterEach(cleanup)
+it('ignores other targets and forwards close requests from legacy Session actions', () => {
+  const dismiss = vi.fn()
+  const slot = vi.fn((_slot: string, _owner: unknown, _options?: { hookContext?: unknown }) => null)
+  const renderSlot = slot as ComponentProps<typeof SessionMenu>['renderSlot']
+  const view = render(<SessionMenu target={{ kind: 'image', value: { url: 'blob:image' } }} dismiss={dismiss} renderSlot={renderSlot} />)
+  expect(slot).not.toHaveBeenCalled()
+  view.rerender(<SessionMenu target={{ kind: 'session', value: { sessionId: SessionId('captured'), displayTitle: 'Captured' } }} dismiss={dismiss} renderSlot={renderSlot} />)
+  expect(slot.mock.calls[0]?.[1]).toEqual({ sessionId: 'captured', displayTitle: 'Captured' })
+  const [open, setOpen] = slot.mock.calls[0]?.[2]?.hookContext as readonly [boolean, (value: boolean) => void]
+  expect(open).toBe(true)
+  setOpen(true)
+  expect(dismiss).not.toHaveBeenCalled()
+  setOpen(false)
+  expect(dismiss).toHaveBeenCalledOnce()
+})
diff --git a/packages/client/ui-workspace/tests/session-menu-actions.client.spec.ts b/packages/client/ui-workspace/tests/session-menu-actions.client.spec.ts
new file mode 100644
index 0000000000..0e54a391ca
--- /dev/null
+++ b/packages/client/ui-workspace/tests/session-menu-actions.client.spec.ts
@@ -0,0 +1,97 @@
+import { Context } from '@deepseek-ai/cordis'
+import { expect, it, onTestFinished, vi } from 'vitest'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { MenuRegistry } from '@deepseek-ai/dsh-client-ui-context-menu/src/client/registry.ts'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import type { WorkspaceSnapshot } from '@deepseek-ai/dsh-api-workspace-controller/client'
+import { SessionId } from '@deepseek-ai/dsh-session/types'
+import { registerSessionMenus } from '../src/client/session-actions/context-menus.tsx'
+import { en, zh } from '../src/client/locales.ts'
+
+function bench() {
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  const registry = new MenuRegistry(vi.fn())
+  onTestFinished(() => { registry.dispose() })
+  ctx.provide('contextMenus', { register: registry.register.bind(registry) } as never)
+  const locale = new LocaleRuntime(ctx)
+  ctx.provide('locale', locale)
+  locale.register('workspace', { en, zh }); locale.setLocale('en')
+  const list = createSnapshotStore<WorkspaceSnapshot>({
+    items: [], pinnedSessionIds: [], archivedSessionIds: [], state: 'idle', phase: 'ready', error: null,
+  })
+  ctx.provide('workspaces', { list } as never)
+  const permissions = new Map<string, ReturnType<typeof createSnapshotStore<boolean>>>()
+  const access = (action: string) => {
+    let source = permissions.get(action)
+    if (source === undefined) { source = createSnapshotStore(true); permissions.set(action, source) }
+    return source
+  }
+  ctx.provide('remoteAccess', { source: (_kind: string, _id: string, action: string) => access(action) } as never)
+  const actions = { pinSession: vi.fn(), unpinSession: vi.fn(), archiveSession: vi.fn(), unarchiveSession: vi.fn(),
+    forkSession: vi.fn(), requestSessionRename: vi.fn(), copySessionId: vi.fn(async () => {}) }
+  const fiber = ctx.plugin({ apply: (plugin: Context) => { registerSessionMenus(plugin, actions) } })
+  const target = { kind: 'session' as const, value: { sessionId: SessionId('background'), displayTitle: 'Background' } }
+  const open = () => registry.resolve(target)
+  return { ctx, fiber, registry, locale, list, access, actions, target, open }
+}
+
+it('preserves built-in order, groups, icons, command identities, and captured action targets', async () => {
+  const b = bench()
+  await b.fiber.await()
+  const menu = b.open()
+  const views = menu.source.getSnapshot()
+  expect(views.map(({ id, label, icon, commandId, separatorBefore, afterContent }) =>
+    [id, label, icon !== undefined, commandId, separatorBefore, afterContent])).toEqual([
+    ['session.pin/pin', 'Pin session', true, undefined, undefined, undefined],
+    ['session.rename/rename', 'Rename', true, 'session.rename', undefined, undefined],
+    ['session.fork/fork', 'Fork session', true, 'session.fork', undefined, undefined],
+    ['session.id/copy', 'Copy Session ID', true, undefined, true, undefined],
+    ['session.archive/archive', 'Archive session', true, 'session.archive', true, true],
+  ])
+  menu.dispose()
+  for (const id of views.map(item => item.id)) b.open().select(id)
+  expect(b.actions.pinSession).toHaveBeenCalledWith('background')
+  expect(b.actions.requestSessionRename).toHaveBeenCalledWith('background', 'Background')
+  expect(b.actions.forkSession).toHaveBeenCalledWith('background')
+  expect(b.actions.copySessionId).toHaveBeenCalledWith('background')
+  expect(b.actions.archiveSession).toHaveBeenCalledWith('background')
+  const unpin = b.open()
+  b.list.set({ ...b.list.getSnapshot(), pinnedSessionIds: [b.target.value.sessionId] })
+  expect(unpin.source.getSnapshot()[0]).toMatchObject({ label: 'Unpin session' })
+  unpin.select('session.pin/pin')
+  expect(b.actions.unpinSession).toHaveBeenCalledWith('background')
+  const restore = b.open()
+  b.list.set({ ...b.list.getSnapshot(), archivedSessionIds: [b.target.value.sessionId] })
+  expect(restore.source.getSnapshot().some(item => item.id === 'session.pin/pin')).toBe(false)
+  const archive = restore.source.getSnapshot().at(-1)!
+  expect(archive).toMatchObject({ label: 'Unarchive session' })
+  expect(archive.commandId).toBeUndefined()
+  restore.select(archive.id)
+  expect(b.actions.unarchiveSession).toHaveBeenCalledWith('background')
+})
+
+it('reacts to permission and locale updates, prevents withdrawn actions, and disposes subscriptions', async () => {
+  const b = bench()
+  await b.fiber.await()
+  const menu = b.open()
+  b.access('session/rename').set(false)
+  b.access('session/fork').set(false)
+  b.access('workspace/archiveSession').set(false)
+  b.access('workspace/pinSession').set(false)
+  expect(menu.source.getSnapshot().map(item => item.id)).toEqual(['session.id/copy'])
+  menu.select('session.rename/rename')
+  expect(b.actions.requestSessionRename).not.toHaveBeenCalled()
+  b.locale.setLocale('zh')
+  expect(menu.source.getSnapshot()[0]?.label).toBe('复制 Session ID')
+  b.access('session/rename').set(true)
+  expect(menu.source.getSnapshot()[0]?.label).toBe('重命名')
+  await b.fiber.dispose()
+  expect(menu.source.getSnapshot()).toEqual([])
+  b.access('session/rename').set(false)
+  b.list.set({ ...b.list.getSnapshot(), pinnedSessionIds: [] })
+  menu.select('session.id/copy')
+  expect(b.actions.copySessionId).not.toHaveBeenCalled()
+  expect(menu.source.getSnapshot()).toEqual([])
+  menu.dispose()
+})
diff --git a/packages/client/ui-workspace/tests/shortcuts.client.spec.ts b/packages/client/ui-workspace/tests/shortcuts.client.spec.ts
index 50caf09818..b481569921 100644
--- a/packages/client/ui-workspace/tests/shortcuts.client.spec.ts
+++ b/packages/client/ui-workspace/tests/shortcuts.client.spec.ts
@@ -79,6 +79,17 @@ describe('workspace shortcut ownership', () => {
     b.controls.add()
     expect(b.controls.state.getSnapshot().addRequested).toBe(false)
   })
+  it.each([
+    ['session.new', 'KeyN'], ['session.search', 'KeyK'], ['workspace.add', 'KeyO'],
+    ['session.rename', 'KeyG'], ['session.fork', 'KeyF'], ['session.archive', 'KeyA'],
+  ])('allows %s from the drawer and blocks it behind another dialog', async (id, code) => {
+    const b = await bench('web')
+    const gesture = key(code, { alt: code !== 'KeyF', shift: code === 'KeyF' })
+    expect(b.registry.dispatch(gesture, { ...context, modal: 'settings' }, vi.fn()).status).toBe('blocked')
+    expect(b.registry.dispatch(gesture, { ...context, modal: 'sidebar' }, vi.fn()).status).toBe('handled')
+    expect(b.commands.get(id)!.modals).toContain('sidebar')
+  })
+
   it('registers six commands with Desktop and Web defaults and removes registrations with the plugin', async () => {
     const b = await bench()
     expect(b.registry.catalog.getSnapshot().map(row => row.id)).toEqual([
diff --git a/packages/client/ui-workspace/tests/workspace-browser.client.spec.tsx b/packages/client/ui-workspace/tests/workspace-browser.client.spec.tsx
index 014f53ba81..9868443225 100644
--- a/packages/client/ui-workspace/tests/workspace-browser.client.spec.tsx
+++ b/packages/client/ui-workspace/tests/workspace-browser.client.spec.tsx
@@ -1,7 +1,8 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { Profiler } from 'react'
-import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, createEvent, fireEvent, render, screen, waitFor, within } from '@testing-library/react'
 import { allowAllAccess, bindSnapshotSelector, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
@@ -15,7 +16,7 @@ import type {
 import type { SessionId } from '@deepseek-ai/dsh-session/types'
 import type { MainPanelId } from '@deepseek-ai/dsh-client-ui-layout/client'
 import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'
-import type { DirectoryFlowOwnerProps, WorkspaceBrowserProps } from '../src/client/contract/slots.ts'
+import type { DirectoryFlowOwnerProps, WorkspaceActionRequest, WorkspaceBrowserProps } from '../src/client/contract/slots.ts'
 import { createWorkspaceShortcutControls } from '../src/client/shortcuts.ts'
 import { createWorkspaceViewStore, FLAT_SESSION_ORDER_KEY } from '../src/client/stores.ts'
 import { UNGROUPED_KEY } from '../src/client/tree.ts'
@@ -108,8 +109,14 @@ const renderDirectoryFlowOnly: WorkspaceBrowserProps['renderSlot'] = (name: stri
 
 function mount(overrides: Partial<WorkspaceBrowserProps> = {}) {
   const controls = createWorkspaceShortcutControls()
+  const request = createSnapshotStore<WorkspaceActionRequest | null>(null)
   const store = createWorkspaceViewStore().create()
   const props: WorkspaceBrowserProps = {
+    openWorkspaceMenu: vi.fn(),
+    useWorkspaceActionRequest: bindSnapshotSelector(request),
+    settleWorkspaceAction: () => { request.set(null) },
+    openSessionMenu: vi.fn(),
+    useContextMenuTarget: selector => selector(null),
     useShortcuts: select => select([]),
     useWorkspaceShortcuts: bindSnapshotSelector(controls.state),
     requestSearch: controls.search,
@@ -122,7 +129,9 @@ function mount(overrides: Partial<WorkspaceBrowserProps> = {}) {
     useSessions: hook(sessionState([])),
     useSessionStatus: hook(noPendingInteraction),
     useSessionRetainInfo: () => undefined,
-    usePanelInfo, useResource,
+    usePanelInfo,
+    useContextMenu: contextMenuHook(),
+    useResource,
     useWorkspaces: hook(workspaceState([])),
     ...allowAllAccess,
     useStore: bindSnapshotSelector(store),
@@ -144,7 +153,10 @@ function mount(overrides: Partial<WorkspaceBrowserProps> = {}) {
     ...overrides,
   }
   const view = render(<WorkspaceBrowser {...props} />)
-  return { view, props, store, controls }
+  return { view, props, store, controls, openDialog: (workspaceId: WorkspaceId, displayTitle: string, action: 'rename' | 'delete') => {
+    const storedTitle = props.useWorkspaces(state => state.items.find(row => row.workspaceId === workspaceId)?.title ?? displayTitle)
+    act(() => { request.set({ action, workspaceId, displayTitle, storedTitle }) })
+  } }
 }
 
 /** Re-render with (possibly) changed props — WorkspaceBrowser has no side channel. */
@@ -754,7 +766,7 @@ describe('WorkspaceBrowser', () => {
     expect(requestSessionRename).toHaveBeenCalledTimes(2)
   })
 
-  it('renders both Session row lists for every visible row in the grouped tree and the flat list', () => {
+  it('renders row actions inline while Session menus belong to the global overlay', () => {
     const rendered = vi.fn()
     const renderSlot: WorkspaceBrowserProps['renderSlot'] = (name: string, owner: object) => {
       rendered(name, owner)
@@ -768,11 +780,11 @@ describe('WorkspaceBrowser', () => {
     expect(rendered).not.toHaveBeenCalledWith('sidebar.workspaces.session.menu.item', expect.anything())
     fireEvent.click(screen.getByText('alpha'))
     const owner = { sessionId: sid('alpha-s'), displayTitle: 'alpha-s' }
-    expect(rendered).toHaveBeenCalledWith('sidebar.workspaces.session.menu.item', owner)
+    expect(rendered).not.toHaveBeenCalledWith('sidebar.workspaces.session.menu.item', owner)
     expect(rendered).toHaveBeenCalledWith('sidebar.workspaces.session.row.action', owner)
     rendered.mockClear()
     act(() => { b.store.actions.setGroupBy('flat') })
-    expect(rendered).toHaveBeenCalledWith('sidebar.workspaces.session.menu.item', owner)
+    expect(rendered).not.toHaveBeenCalledWith('sidebar.workspaces.session.menu.item', owner)
     expect(rendered).toHaveBeenCalledWith('sidebar.workspaces.session.row.action', owner)
   })
 
@@ -1951,6 +1963,21 @@ describe('WorkspaceBrowser', () => {
     expect(screen.getByRole('button', { name: '搜索会话' }).getAttribute('aria-expanded')).toBe('true')
   })
 
+  it('expands an inert drawer with retained wide content before focusing search', () => {
+    vi.useFakeTimers()
+    try {
+      const expandSidebar = vi.fn(() => { b.view.container.removeAttribute('inert') })
+      const b = mount({ wide: true, expandSidebar })
+      b.view.container.setAttribute('inert', '')
+      act(() => { b.controls.search() })
+      expect(expandSidebar).toHaveBeenCalledOnce()
+      act(() => { vi.advanceTimersByTime(300) })
+      expect(document.activeElement).toBe(screen.getByPlaceholderText('搜索会话名称'))
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+
   it('rail state renders icon controls that request expansion', () => {
     vi.useFakeTimers()
     try {
@@ -2395,7 +2422,7 @@ describe('WorkspaceBrowser', () => {
 
   it('labels an unrenamed default Workspace in the reader’s language and every other title verbatim', () => {
     const renameWorkspace = vi.fn(async () => {})
-    mount({
+    const browser = mount({
       useWorkspaces: hook(workspaceState([
         workspace('alpha', [], 'default-workspace'),
         workspace('beta', [], 'default-workspace backup'),
@@ -2407,8 +2434,7 @@ describe('WorkspaceBrowser', () => {
     // The dialog edits the text on screen, and the stored title — not that
     // text — decides whether confirming saves. So confirming the untouched
     // prefill pins the localized name and the row stops following the language.
-    fireEvent.click(screen.getByRole('button', { name: '工作区“默认工作区”的操作' }))
-    fireEvent.click(screen.getByRole('menuitem', { name: '重命名' }))
+    browser.openDialog(wid('alpha'), '默认工作区', 'rename')
     expect(screen.getByLabelText<HTMLInputElement>('工作区名称').value).toBe('默认工作区')
     expect(screen.queryByRole('alert')).toBeNull()
     const confirm = screen.getByRole<HTMLButtonElement>('button', { name: '重命名' })
@@ -2420,12 +2446,11 @@ describe('WorkspaceBrowser', () => {
   it('renames a workspace through the row menu dialog', async () => {
     let resolveRename!: () => void
     const renameWorkspace = vi.fn(() => new Promise<void>((resolve) => { resolveRename = resolve }))
-    mount({
+    const browser = mount({
       useWorkspaces: hook(workspaceState([workspace('alpha', [], 'Alpha'), workspace('beta', [], 'Beta')])),
       renameWorkspace,
     })
-    fireEvent.click(screen.getByRole('button', { name: '工作区“Alpha”的操作' }))
-    fireEvent.click(screen.getByRole('menuitem', { name: '重命名' }))
+    browser.openDialog(wid('alpha'), 'Alpha', 'rename')
     const input = screen.getByLabelText<HTMLInputElement>('工作区名称')
     expect(input.value).toBe('Alpha')
     // Unchanged and blank names stay blocked.
@@ -2449,18 +2474,21 @@ describe('WorkspaceBrowser', () => {
 
   it('rename via Enter, failure surfaces the error, Cancel closes', async () => {
     const renameWorkspace = vi.fn(async () => { throw new Error('rename conflict') })
-    mount({
+    const browser = mount({
       useWorkspaces: hook(workspaceState([workspace('alpha', [], 'Alpha')])),
       renameWorkspace,
     })
-    fireEvent.click(screen.getByRole('button', { name: '工作区“Alpha”的操作' }))
-    fireEvent.click(screen.getByRole('menuitem', { name: '重命名' }))
+    browser.openDialog(wid('alpha'), 'Alpha', 'rename')
     const input = screen.getByLabelText<HTMLInputElement>('工作区名称')
     // Enter with a blocked draft (unchanged) does nothing.
     fireEvent.keyDown(input, { key: 'Enter' })
     expect(renameWorkspace).not.toHaveBeenCalled()
     fireEvent.change(input, { target: { value: 'Renamed' } })
     fireEvent.keyDown(input, { key: 'a' })
+    fireEvent.compositionStart(input)
+    fireEvent.keyDown(input, { key: 'Enter' })
+    expect(renameWorkspace).not.toHaveBeenCalled()
+    fireEvent.compositionEnd(input)
     fireEvent.keyDown(input, { key: 'Enter' })
     expect(renameWorkspace).toHaveBeenCalledWith(wid('alpha'), 'Renamed')
     await waitFor(() => { expect(screen.getByRole('alert').textContent).toBe('rename conflict') })
@@ -2473,12 +2501,11 @@ describe('WorkspaceBrowser', () => {
 
   it('reports non-Error rename failures as text', async () => {
     const renameWorkspace = vi.fn(async () => { throw 'denied' })
-    mount({
+    const browser = mount({
       useWorkspaces: hook(workspaceState([workspace('alpha', [], 'Alpha')])),
       renameWorkspace,
     })
-    fireEvent.click(screen.getByRole('button', { name: '工作区“Alpha”的操作' }))
-    fireEvent.click(screen.getByRole('menuitem', { name: '重命名' }))
+    browser.openDialog(wid('alpha'), 'Alpha', 'rename')
     fireEvent.change(screen.getByLabelText('工作区名称'), { target: { value: 'Other' } })
     fireEvent.click(screen.getByRole('button', { name: '重命名' }))
     await waitFor(() => { expect(screen.getByRole('alert').textContent).toBe('denied') })
@@ -2491,8 +2518,7 @@ describe('WorkspaceBrowser', () => {
       useWorkspaces: hook(workspaceState([workspace('alpha', ['session'], 'Alpha')])),
       deleteWorkspace,
     })
-    fireEvent.click(screen.getByRole('button', { name: '工作区“Alpha”的操作' }))
-    fireEvent.click(screen.getByRole('menuitem', { name: '删除工作区' }))
+    browser.openDialog(wid('alpha'), 'Alpha', 'delete')
     const dialog = screen.getByRole('dialog', { name: '删除工作区' })
     expect(dialog.textContent).toContain('将把“Alpha”从工作区列表中移除')
     expect(dialog.textContent).toContain('文件夹与会话记录会保留')
@@ -2522,12 +2548,11 @@ describe('WorkspaceBrowser', () => {
     const deleteWorkspace = vi.fn()
       .mockRejectedValueOnce(new Error('storage unavailable'))
       .mockRejectedValueOnce('denied')
-    mount({
+    const browser = mount({
       useWorkspaces: hook(workspaceState([workspace('alpha', [], 'Alpha')])),
       deleteWorkspace,
     })
-    fireEvent.click(screen.getByRole('button', { name: '工作区“Alpha”的操作' }))
-    fireEvent.click(screen.getByRole('menuitem', { name: '删除工作区' }))
+    browser.openDialog(wid('alpha'), 'Alpha', 'delete')
     fireEvent.click(screen.getByRole('button', { name: '删除工作区' }))
     await waitFor(() => { expect(screen.getByRole('alert').textContent).toBe('storage unavailable') })
     expect(screen.getByRole('dialog', { name: '删除工作区' })).toBeTruthy()
@@ -2539,13 +2564,12 @@ describe('WorkspaceBrowser', () => {
 
   it('Cancel, Escape, and Close dismiss deletion without calling the action', () => {
     const deleteWorkspace = vi.fn(async () => {})
-    mount({
+    const browser = mount({
       useWorkspaces: hook(workspaceState([workspace('alpha', [], 'Alpha')])),
       deleteWorkspace,
     })
     const open = () => {
-      fireEvent.click(screen.getByRole('button', { name: '工作区“Alpha”的操作' }))
-      fireEvent.click(screen.getByRole('menuitem', { name: '删除工作区' }))
+      browser.openDialog(wid('alpha'), 'Alpha', 'delete')
     }
     open()
     fireEvent.click(screen.getByRole('button', { name: '取消' }))
diff --git a/packages/client/ui-workspace/tests/workspace-picker.client.spec.tsx b/packages/client/ui-workspace/tests/workspace-picker.client.spec.tsx
index 2a68dc2b34..e39f7cf81c 100644
--- a/packages/client/ui-workspace/tests/workspace-picker.client.spec.tsx
+++ b/packages/client/ui-workspace/tests/workspace-picker.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
@@ -100,7 +101,7 @@ function mount(
       useSessions={hook(sessions)}
       useSessionStatus={hook(noPendingInteraction)}
       useSessionRetainInfo={() => undefined}
-      usePanelInfo={usePanelInfo} useResource={useResource}
+      usePanelInfo={usePanelInfo} useContextMenu={contextMenuHook()} useResource={useResource}
       useWorkspaces={hook(workspaceState(nextItems))}
       {...allowAllAccess}
       onPick={onPick}
@@ -231,7 +232,7 @@ describe('WorkspacePicker', () => {
         open useSessions={hook(sessions)} useWorkspaces={hook(workspaceState([workspace('alpha', 'Alpha')]))}
         useSessionStatus={hook(noPendingInteraction)}
         useSessionRetainInfo={() => undefined}
-        usePanelInfo={usePanelInfo} useResource={useResource}
+        usePanelInfo={usePanelInfo} useContextMenu={contextMenuHook()} useResource={useResource}
         {...allowAllAccess}
         onPick={vi.fn()} onClose={vi.fn()} createWorkspace={vi.fn()}
         useDirectoryFlow={occupancySource().useDirectoryFlow} renderSlot={renderSlot} t={t}
@@ -250,7 +251,7 @@ describe('WorkspacePicker', () => {
         open anchorRef={anchor()} useSessions={hook(sessions)} useWorkspaces={hook(state)}
         useSessionStatus={hook(noPendingInteraction)}
         useSessionRetainInfo={() => undefined}
-        usePanelInfo={usePanelInfo} useResource={useResource}
+        usePanelInfo={usePanelInfo} useContextMenu={contextMenuHook()} useResource={useResource}
         {...allowAllAccess}
         onPick={vi.fn()} onClose={vi.fn()} createWorkspace={vi.fn()}
         useDirectoryFlow={occupancySource().useDirectoryFlow} renderSlot={renderSlot} t={t}
diff --git a/packages/client/ui-workspace/tsconfig.json b/packages/client/ui-workspace/tsconfig.json
index dea11b7bd6..2fce88ba2d 100644
--- a/packages/client/ui-workspace/tsconfig.json
+++ b/packages/client/ui-workspace/tsconfig.json
@@ -82,6 +82,9 @@
     },
     {
       "path": "../product-analytics/tsconfig.client.json"
+    },
+    {
+      "path": "../ui-context-menu"
     }
   ]
 }
diff --git a/packages/client/web/README.i18n.yaml b/packages/client/web/README.i18n.yaml
index bd0e87b2db..5d8df516ef 100644
--- a/packages/client/web/README.i18n.yaml
+++ b/packages/client/web/README.i18n.yaml
@@ -42,8 +42,8 @@
   en: 83f9195138da9a82
   zh: 135d7da735fb870a
 /deepseek-ai-dsh-client-web/understand-the-implementation/source-map:
-  en: 1fe37d3730368e32
-  zh: 74c2d6980ce82e21
+  en: 36046f6bc4347fa5
+  zh: a6a8c55ba77fd77b
 /deepseek-ai-dsh-client-web/further-exploration:
   en: f2da70a33bba9086
   zh: a775f6fe309150ea
diff --git a/packages/client/web/README.md b/packages/client/web/README.md
index 93f6bb9529..314845997b 100644
--- a/packages/client/web/README.md
+++ b/packages/client/web/README.md
@@ -90,6 +90,7 @@ The boot kernel delegates manifest entry creation to Client Modules so live grap
 | [`src/platform.ts`](src/platform.ts) | `PLATFORM_MODULES` / `PRELOADED_CLIENT_EXTERNALS`: the implicit external baseline |
 | [`src/seed.ts`](src/seed.ts) | Static module table handed to the loader at boot |
 | [`src/window-drag/regions.ts`](src/window-drag/regions.ts) | The darwin app-region composition model, and the interactive selector `base.css` subtracts |
+| [`src/base.css`](src/base.css) | Page defaults and native drag regions; inert subtrees neither add nor subtract drag rectangles |
 | [`src/window-drag/recall.ts`](src/window-drag/recall.ts) | The shell's one window drag-rect watcher (electron/electron#32341): measure the marked rows per frame and pulse the recall mark while they move |
 
 </details>
diff --git a/packages/client/web/README.zh.md b/packages/client/web/README.zh.md
index c913362067..ef31351620 100644
--- a/packages/client/web/README.zh.md
+++ b/packages/client/web/README.zh.md
@@ -90,6 +90,7 @@ Web 和 Desktop 的数学公式渲染要求支持 WOFF2。[Web 构建](../../../
 | [`src/platform.ts`](src/platform.ts) | `PLATFORM_MODULES` / `PRELOADED_CLIENT_EXTERNALS`：隐式 external 基座 |
 | [`src/seed.ts`](src/seed.ts) | 启动时交给 loader 的静态模块表 |
 | [`src/window-drag/regions.ts`](src/window-drag/regions.ts) | darwin app-region 组合模型，以及 `base.css` 减除的交互元素选择器 |
+| [`src/base.css`](src/base.css) | 页面基础样式与原生窗口拖拽区域；inert 子树不参与拖拽区域计算 |
 | [`src/window-drag/recall.ts`](src/window-drag/recall.ts) | 外壳唯一的窗口拖拽矩形 watcher（electron/electron#32341）：逐帧测量被打标行，并在它们移动期间脉冲 recall 标记 |
 
 </details>
diff --git a/packages/client/web/package.json b/packages/client/web/package.json
index b61299f054..f949f3edf0 100644
--- a/packages/client/web/package.json
+++ b/packages/client/web/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-web",
   "description": "Web boot kernel: static module table, Cordis loader, framework-free boot page, and UI-renderer handoff",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/client/web/src/base.css b/packages/client/web/src/base.css
index af74988cf1..3a556a982e 100644
--- a/packages/client/web/src/base.css
+++ b/packages/client/web/src/base.css
@@ -89,6 +89,13 @@ html[data-platform='darwin'] :is(
   -webkit-app-region: no-drag;
 }
 
+/* Reset both native region types for inert content. Chromium treats the explicit
+   `none` keyword as `no-drag`, which would erase foreground drag rows. */
+html[data-platform='darwin'] [inert],
+html[data-platform='darwin'] [inert] * {
+  -webkit-app-region: initial;
+}
+
 code,
 pre,
 [data-diff],
diff --git a/packages/compaction/command-compact/package.json b/packages/compaction/command-compact/package.json
index 5cb5f909d6..0c5fcf6db8 100644
--- a/packages/compaction/command-compact/package.json
+++ b/packages/compaction/command-compact/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-command-compact",
   "description": "Human-facing slash command for explicit session compaction",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/compaction/compaction-basic/README.i18n.yaml b/packages/compaction/compaction-basic/README.i18n.yaml
index 9e67ab2df6..e2609ea23a 100644
--- a/packages/compaction/compaction-basic/README.i18n.yaml
+++ b/packages/compaction/compaction-basic/README.i18n.yaml
@@ -57,8 +57,8 @@
   en: 313e019b1a9f8aa8
   zh: 3c75d11b02adb693
 /deepseek-ai-dsh-compaction-basic/understand-the-implementation/source-map:
-  en: 3f1d7a55b790e623
-  zh: 39e878c0785a885c
+  en: 747bad235fbb04ad
+  zh: 02e6562f3d745d4f
 /deepseek-ai-dsh-compaction-basic/further-exploration:
   en: 84b5b81eb9b5965d
   zh: 7000af0fa502fcc1
diff --git a/packages/compaction/compaction-basic/README.md b/packages/compaction/compaction-basic/README.md
index 3956c8a57d..c8d0c6b748 100644
--- a/packages/compaction/compaction-basic/README.md
+++ b/packages/compaction/compaction-basic/README.md
@@ -148,6 +148,8 @@ The transaction validates the surface span and the durable lock, appends `compac
 | [`src/config.ts`](src/config.ts) | Load-time validation and routed-model policy resolution |
 | [`src/types.ts`](src/types.ts) | `BasicCompactionConfig` and resolved policy vocabulary |
 
+The package root's type declarations add `compaction` to `LlmRequestPurposeMap`. Direct callers constructing compaction requests use `import type {} from '@deepseek-ai/dsh-compaction-basic'` so `GenerateOptions.purpose` includes that key.
+
 </details>
 
 -----
diff --git a/packages/compaction/compaction-basic/README.zh.md b/packages/compaction/compaction-basic/README.zh.md
index 283a4d19eb..023d9ea436 100644
--- a/packages/compaction/compaction-basic/README.zh.md
+++ b/packages/compaction/compaction-basic/README.zh.md
@@ -148,6 +148,8 @@ kind: "package-reference"
 | [`src/config.ts`](src/config.ts) | 加载时验证与路由模型策略解析 |
 | [`src/types.ts`](src/types.ts) | `BasicCompactionConfig` 与已解析策略词汇 |
 
+包根入口的类型声明将 `compaction` 添加到 `LlmRequestPurposeMap`。直接构造压缩请求的调用方使用 `import type {} from '@deepseek-ai/dsh-compaction-basic'`，使 `GenerateOptions.purpose` 包含该键。
+
 </details>
 
 -----
diff --git a/packages/compaction/compaction-basic/package.json b/packages/compaction/compaction-basic/package.json
index ab3c229e5f..fbbfad7020 100644
--- a/packages/compaction/compaction-basic/package.json
+++ b/packages/compaction/compaction-basic/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-compaction-basic",
   "description": "Token-meter-driven compaction policy and LLM summarization backend for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/compaction/compaction-basic/src/types.ts b/packages/compaction/compaction-basic/src/types.ts
index e8160dba2c..23e195aab7 100644
--- a/packages/compaction/compaction-basic/src/types.ts
+++ b/packages/compaction/compaction-basic/src/types.ts
@@ -4,6 +4,12 @@
  * @module @deepseek-ai/dsh-compaction-basic/types
  */
 
+declare module '@deepseek-ai/dsh-llm/types' {
+  interface LlmRequestPurposeMap {
+    'compaction': true
+  }
+}
+
 import type { LlmCallConfig } from '@deepseek-ai/dsh-llm'
 
 /** Policy fields shared by the default policy and exact model overrides. */
diff --git a/packages/compaction/compaction-basic/tests/manual-compaction.spec.ts b/packages/compaction/compaction-basic/tests/manual-compaction.spec.ts
index 051ae88d93..189df10fbf 100644
--- a/packages/compaction/compaction-basic/tests/manual-compaction.spec.ts
+++ b/packages/compaction/compaction-basic/tests/manual-compaction.spec.ts
@@ -880,17 +880,23 @@ describe('compactNow transaction and failure classification', () => {
     const { compact } = detachedService()
     const session = closedConversation(2)
     const agent = fakeAgent(session, () => () => undefined)
-    compact.gate = new Promise<undefined>((resolve) => {
-      setTimeout(() => { resolve(undefined) }, 5)
-    })
+    const openedAt = Date.now()
+    const originalNow = Date.now
+    const clock = vi.spyOn(Date, 'now').mockReturnValue(openedAt)
+    try {
+      compact.duringSummary = () => { clock.mockReturnValue(openedAt + 25) }
 
-    await compact.compactNow(agent, SIGNAL)
+      await compact.compactNow(agent, SIGNAL)
 
-    const start = session.snapshotEvents().findLast(event => event.type === 'compaction/start')
-    const end = session.snapshotEvents().findLast(event => event.type === 'compaction/end')
-    expect(start).toBeDefined()
-    expect(end).toBeDefined()
-    expect(end!.time - start!.time).toBeGreaterThan(0)
+      const start = session.snapshotEvents().findLast(event => event.type === 'compaction/start')
+      const end = session.snapshotEvents().findLast(event => event.type === 'compaction/end')
+      expect(start?.time).toBe(openedAt)
+      expect(end?.time).toBe(openedAt + 25)
+      expect(end!.time - start!.time).toBe(25)
+    } finally {
+      clock.mockRestore()
+    }
+    expect(Date.now).toBe(originalNow)
   })
 
   it('excludes concurrent automatic and manual compaction of one session', async () => {
diff --git a/packages/compaction/compaction-image-offload/package.json b/packages/compaction/compaction-image-offload/package.json
index 816119ffd8..9bd5cb3d10 100644
--- a/packages/compaction/compaction-image-offload/package.json
+++ b/packages/compaction/compaction-image-offload/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-compaction-image-offload",
   "description": "Durable image offload for image-capable routes: replace over-budget request images with placeholders and retry",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/compaction/compaction-tool-result-pruner/package.json b/packages/compaction/compaction-tool-result-pruner/package.json
index 0142ffbc2a..80a1400088 100644
--- a/packages/compaction/compaction-tool-result-pruner/package.json
+++ b/packages/compaction/compaction-tool-result-pruner/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-compaction-tool-result-pruner",
   "description": "Replay-safe model-free head/middle/tail pruning for tool-result surface nodes",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/compaction/compaction/package.json b/packages/compaction/compaction/package.json
index 778f24b4e7..af9fd6a975 100644
--- a/packages/compaction/compaction/package.json
+++ b/packages/compaction/compaction/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-compaction",
   "description": "Abstract compaction service seam (ctx.compaction) for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/computer-use/computer-use/package.json b/packages/computer-use/computer-use/package.json
index 63f30c0b52..5b715ada06 100644
--- a/packages/computer-use/computer-use/package.json
+++ b/packages/computer-use/computer-use/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-computer-use",
   "description": "Exclusive named computer-use provider registration",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/context/agent-instructions/package.json b/packages/context/agent-instructions/package.json
index 588efdb74d..cfc8c4a26a 100644
--- a/packages/context/agent-instructions/package.json
+++ b/packages/context/agent-instructions/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-agent-instructions",
   "description": "Workspace context loader for AGENTS.md/CLAUDE.md instruction files",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/context/file-reference-local/package.json b/packages/context/file-reference-local/package.json
index da69161068..57b4824bc8 100644
--- a/packages/context/file-reference-local/package.json
+++ b/packages/context/file-reference-local/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-file-reference-local",
   "description": "Local-filesystem ctx.fileReferences provider with bounded fuzzy indexes",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/context/file-reference/package.json b/packages/context/file-reference/package.json
index 2599fe709a..f781f2a5e5 100644
--- a/packages/context/file-reference/package.json
+++ b/packages/context/file-reference/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-file-reference",
   "description": "File-reference discovery contract and shared @file grammar",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/context/harness-dev-context/package.json b/packages/context/harness-dev-context/package.json
index 35131d169b..f3e12c8220 100644
--- a/packages/context/harness-dev-context/package.json
+++ b/packages/context/harness-dev-context/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-harness-dev-context",
   "description": "Model context naming the DeepSeek Harness checkout and Web GUI URL without letting either change the system prompt",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/context/session-reference/package.json b/packages/context/session-reference/package.json
index 213d812d7f..8e6e7aa9fa 100644
--- a/packages/context/session-reference/package.json
+++ b/packages/context/session-reference/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-reference",
   "description": "Cross-session snapshot references and durable untrusted model context (ctx.sessionReferenceResolver)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/context/session-reference/tests/session-reference.spec.ts b/packages/context/session-reference/tests/session-reference.spec.ts
index acbf070bbb..e4a6885f8b 100644
--- a/packages/context/session-reference/tests/session-reference.spec.ts
+++ b/packages/context/session-reference/tests/session-reference.spec.ts
@@ -615,12 +615,14 @@ describe('model-relative reference budgets', () => {
   it('removes its pre-step listener when the resolver fiber is disposed', async () => {
     const { ctx, agent, source, resolve, resolverFiber } = await setup()
     const resolver = ctx.sessionReferenceResolver
+    resolve.mockClear()
     await resolverFiber.dispose()
     ctx.systemPrompt.variable('provider', () => 'disposed')
     ctx.systemPrompt.variable('model', () => 'disposed')
     await ctx.systemPrompt.assemble({ agent, scope: agent })
-    await resolver.prepare(agent, [], [{ sessionId: source.id }], { provider: 'seed', model: 'seed' })
-    expect(resolve).toHaveBeenLastCalledWith('seed', 'seed', undefined)
+    expect(resolve).not.toHaveBeenCalled()
+    await expect(resolver.prepare(agent, [], [{ sessionId: source.id }], { provider: 'seed', model: 'seed' }))
+      .rejects.toThrow('cannot get required service "sessionQuery" in inactive context')
     const message = createUserMessage({ source: { kind: 'user' }, content: [{ type: 'text', text: formatSessionReferenceMention({ sessionId: source.id }) }] })
     const seed = { kind: 'enter' as const, messages: [message] }
     await expect(agentEvents(ctx, agent).waterfall('agent/pre-step', { modelSelection: { provider: 'seed', model: 'seed' }, messages: [message], turn: 1, step: 1, signal: new AbortController().signal },
diff --git a/packages/context/time-context/package.json b/packages/context/time-context/package.json
index c0b904472a..31e46b9755 100644
--- a/packages/context/time-context/package.json
+++ b/packages/context/time-context/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-time-context",
   "description": "Durable per-step context with the current time and elapsed time",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/context/tmux-context/package.json b/packages/context/tmux-context/package.json
index f867fbe594..dd5b61eb37 100644
--- a/packages/context/tmux-context/package.json
+++ b/packages/context/tmux-context/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tmux-context",
   "description": "Opt-in durable per-step context with this agent's tmux pane and window location",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/core/agent-default-model/package.json b/packages/core/agent-default-model/package.json
index 13cd9b59fc..62387c936e 100644
--- a/packages/core/agent-default-model/package.json
+++ b/packages/core/agent-default-model/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-agent-default-model",
   "description": "Default model selection shared by Agent entry points",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/core/agent-loop/package.json b/packages/core/agent-loop/package.json
index 4c0ebac75d..be922d4fde 100644
--- a/packages/core/agent-loop/package.json
+++ b/packages/core/agent-loop/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-agent-loop",
   "description": "The concrete agent loop plugin for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/core/agent-tool-presentation/package.json b/packages/core/agent-tool-presentation/package.json
index ad8ffe1440..e12837a6f4 100644
--- a/packages/core/agent-tool-presentation/package.json
+++ b/packages/core/agent-tool-presentation/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-agent-tool-presentation",
   "description": "Deprecated tool presentation selector; use dsh-tool-executor-native or dsh-tool-executor-ptc directly",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/core/agent/package.json b/packages/core/agent/package.json
index c1d6e6cb03..c074d97c60 100644
--- a/packages/core/agent/package.json
+++ b/packages/core/agent/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-agent",
   "description": "Agent interface, registry, initiator scope, and event vocabulary for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/core/scope/package.json b/packages/core/scope/package.json
index 3a40072120..74f5795aeb 100644
--- a/packages/core/scope/package.json
+++ b/packages/core/scope/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-scope",
   "description": "Scoped-context registration primitive (scope tags, scope-filtered event dispatch) for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/core/session/package.json b/packages/core/session/package.json
index 987d31aa9a..296fe02dd6 100644
--- a/packages/core/session/package.json
+++ b/packages/core/session/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session",
   "description": "Event-sourced session store for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/core/session/tests/json.spec.ts b/packages/core/session/tests/json.spec.ts
index e213fc9a17..a6de09218b 100644
--- a/packages/core/session/tests/json.spec.ts
+++ b/packages/core/session/tests/json.spec.ts
@@ -13,7 +13,7 @@ function objectWithForgedIntrinsicPrototype(revoked = false): Record<string, unk
   return Object.assign(Object.create(prototype) as Record<string, unknown>, { value: 1 })
 }
 
-describe('snapshotJsonValue', () => {
+describe('snapshotJsonValue and isJsonValue', () => {
   it('copies the complete JSON scalar vocabulary and rejects unsupported scalars', () => {
     const unsupportedFunction = (): void => {}
 
@@ -120,6 +120,111 @@ describe('snapshotJsonValue', () => {
     expect(arrayReads).toBe(1)
   })
 
+  it.each(['snapshot', 'predicate'] as const)('keeps captured keys and lengths with depth-first getter reads in %s mode', (mode) => {
+    const reads: string[] = []
+    const items: unknown[] = [0, 1]
+    Object.defineProperty(items, 0, {
+      enumerable: true,
+      get: () => {
+        reads.push('item')
+        items[1] = 7
+        items.push('added')
+        return { get child() { reads.push('child'); return 3 } }
+      },
+    })
+    const source = {
+      get items() {
+        reads.push('items')
+        Object.defineProperty(source, 'added', {
+          enumerable: true,
+          get: () => { reads.push('added'); return 9 },
+        })
+        return items
+      },
+      get tail() { reads.push('tail'); return 4 },
+    }
+
+    const result = mode === 'snapshot' ? snapshotJsonValue(source) : isJsonValue(source)
+
+    expect(result).toEqual(mode === 'snapshot' ? { items: [{ child: 3 }, 7], tail: 4 } : true)
+    expect(reads).toEqual(['items', 'item', 'child', 'tail'])
+  })
+
+  it.each(['snapshot', 'predicate'] as const)('rejects an array slot deleted by an earlier getter in %s mode', (mode) => {
+    const source = [0, 1]
+    Object.defineProperty(source, 0, {
+      enumerable: true,
+      get: () => {
+        Reflect.deleteProperty(source, 1)
+        return 0
+      },
+    })
+
+    expect(mode === 'snapshot' ? snapshotJsonValue(source) : isJsonValue(source))
+      .toBe(mode === 'snapshot' ? undefined : false)
+  })
+
+  it.each(['snapshot', 'predicate'] as const)('uses one captured Proxy index schedule in %s mode', (mode) => {
+    for (const secondLength of [2, 1.5, Number.NaN]) {
+      let coercions = 0
+      const length = {
+        valueOf() {
+          coercions += 1
+          if (coercions > 2) throw new Error('length was coerced again')
+          return coercions === 1 ? 2 : secondLength
+        },
+      }
+      const source = new Proxy([1, 2], {
+        get(target, key): unknown {
+          if (key === 'length') return length
+          const value: unknown = Reflect.get(target, key)
+          return value
+        },
+      })
+      const expected = Number.isNaN(secondLength) ? [] : secondLength === 2 ? [1, 2] : undefined
+
+      const result = mode === 'snapshot' ? snapshotJsonValue(source) : isJsonValue(source)
+
+      expect(result).toEqual(mode === 'snapshot' ? expected : expected !== undefined)
+      expect(coercions).toBe(2)
+    }
+  })
+
+  it.each([false, true])('does not read an array slot outside a fractional Proxy length, throwing slot=%s', (throwing) => {
+    let reads = 0
+    const source = new Proxy([42], {
+      get(target, key): unknown {
+        if (key === 'length') return 1 - Number.EPSILON / 2
+        if (key === '0') {
+          reads += 1
+          if (throwing) throw new Error('array slot must not be read')
+        }
+        const value: unknown = Reflect.get(target, key)
+        return value
+      },
+    })
+
+    expect(JSON.stringify(source)).toBe('[]')
+    expect(snapshotJsonValue(source)).toEqual([])
+    expect(isJsonValue(source)).toBe(true)
+    expect(reads).toBe(0)
+  })
+
+  it('detaches every occurrence of a shared child in a wide array', () => {
+    const shared = { nested: [{ value: 1 }] }
+    const source = Array.from({ length: 4_096 }, () => shared)
+
+    expect(isJsonValue(source)).toBe(true)
+    const snapshot = snapshotJsonValue(source)!
+    expect(snapshot).toEqual(source)
+    shared.nested[0]!.value = 2
+    snapshot[0]!.nested[0]!.value = 3
+
+    expect(source.at(-1)?.nested[0]?.value).toBe(2)
+    expect(snapshot[0]?.nested[0]?.value).toBe(3)
+    expect(snapshot.at(-1)?.nested[0]?.value).toBe(1)
+  })
+
   it('accepts deeply nested valid JSON without using the JavaScript call stack', () => {
     let value: JsonValue = 'leaf'
     for (let depth = 0; depth < 5_000; depth++) value = [value]
diff --git a/packages/core/system-prompt/package.json b/packages/core/system-prompt/package.json
index 1140aaef3c..2a693c5a6e 100644
--- a/packages/core/system-prompt/package.json
+++ b/packages/core/system-prompt/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-system-prompt",
   "description": "System prompt assembly registry for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/core/tool-executor-native/package.json b/packages/core/tool-executor-native/package.json
index bdcd1ab8f4..2634c16621 100644
--- a/packages/core/tool-executor-native/package.json
+++ b/packages/core/tool-executor-native/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-executor-native",
   "description": "Native tool execution plugin",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/core/tool-executor-ptc/package.json b/packages/core/tool-executor-ptc/package.json
index 185f4d8454..84b078b9c0 100644
--- a/packages/core/tool-executor-ptc/package.json
+++ b/packages/core/tool-executor-ptc/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-executor-ptc",
   "description": "PTC program execution, tool bindings, and generated SDK prompts",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/core/tools/package.json b/packages/core/tools/package.json
index e08edd6016..10cba07381 100644
--- a/packages/core/tools/package.json
+++ b/packages/core/tools/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tools",
   "description": "Tool registry and execution pipeline for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/credentials/authorization/package.json b/packages/credentials/authorization/package.json
index d8c6c311ad..f7e7184899 100644
--- a/packages/credentials/authorization/package.json
+++ b/packages/credentials/authorization/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-authorization",
   "description": "Authorization seam (ctx.authorization): plugin-owned flows that obtain a credential through a conversation with the human",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/credentials/credentials-local/package.json b/packages/credentials/credentials-local/package.json
index e11eeaa6e7..ac49dfb49c 100644
--- a/packages/credentials/credentials-local/package.json
+++ b/packages/credentials/credentials-local/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-credentials-local",
   "description": "File-backed credentials provider ($DSH_HOME/.env under the live process environment) for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/credentials/credentials/package.json b/packages/credentials/credentials/package.json
index 3212f6bb08..00024c8666 100644
--- a/packages/credentials/credentials/package.json
+++ b/packages/credentials/credentials/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-credentials",
   "description": "Abstract credential seam (ctx.credentials): settings carry references to secrets, providers own the values",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/credentials/deepseek-account-platform/package.json b/packages/credentials/deepseek-account-platform/package.json
index eb2202383b..c544136dda 100644
--- a/packages/credentials/deepseek-account-platform/package.json
+++ b/packages/credentials/deepseek-account-platform/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-deepseek-account-platform",
   "description": "Authorize DeepSeek accounts through browser PKCE",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/credentials/deepseek-account/package.json b/packages/credentials/deepseek-account/package.json
index d2c8187715..69a0568b62 100644
--- a/packages/credentials/deepseek-account/package.json
+++ b/packages/credentials/deepseek-account/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-deepseek-account",
   "description": "Read account state and resolve official API credentials",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/deliverables/deliverable-file-references/package.json b/packages/deliverables/deliverable-file-references/package.json
index faae8ef348..87fbb7a585 100644
--- a/packages/deliverables/deliverable-file-references/package.json
+++ b/packages/deliverables/deliverable-file-references/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-deliverable-file-references",
   "description": "Shared model guidance for file links and deliverables across DeepSeek Harness hosts",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/deliverables/tool-present/package.json b/packages/deliverables/tool-present/package.json
index fe7a54bd7c..e8e4ac28df 100644
--- a/packages/deliverables/tool-present/package.json
+++ b/packages/deliverables/tool-present/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-present",
   "description": "Explicit workspace file delivery declarations for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/deliverables/workspace-changes/package.json b/packages/deliverables/workspace-changes/package.json
index 72d5392631..d24af4a251 100644
--- a/packages/deliverables/workspace-changes/package.json
+++ b/packages/deliverables/workspace-changes/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-workspace-changes",
   "description": "Per-turn workspace file changes recorded from git working-tree snapshots and whole-file captures, with per-file comparisons, for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/document/office-to-pdf/package.json b/packages/document/office-to-pdf/package.json
index 62ab632d57..2f1afa39bb 100644
--- a/packages/document/office-to-pdf/package.json
+++ b/packages/document/office-to-pdf/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-office-to-pdf",
   "description": "Shared Office-to-PDF conversion with bounded queues and caching",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/README.i18n.yaml b/packages/experimental/README.i18n.yaml
index b430030da4..cdf17872db 100644
--- a/packages/experimental/README.i18n.yaml
+++ b/packages/experimental/README.i18n.yaml
@@ -9,8 +9,8 @@
   en: 18bc48bb66b3e516
   zh: 51f2340a5c921f36
 /packages-experimental/summary:
-  en: 2b62fffc1ec9dd24
-  zh: cf1624878774c7df
+  en: 35d8cec3313015b0
+  zh: 87d63944cd39e90e
 /packages-experimental/table-of-contents:
   en: cd24cc2ef2ec742e
   zh: 7db21f509a8620a5
@@ -18,8 +18,8 @@
   en: b55aeb927737b90d
   zh: 0b215fcb5c2c7908
 /packages-experimental/packages:
-  en: b1f5913dd5384887
-  zh: 512a73927d199675
+  en: e4263325eba6cb4c
+  zh: 5b49e65b1692a7c1
 /packages-experimental/related-documentation:
   en: 40797d4849455966
   zh: bb91a68dd995887c
diff --git a/packages/experimental/README.md b/packages/experimental/README.md
index db46606a73..cdd547c581 100644
--- a/packages/experimental/README.md
+++ b/packages/experimental/README.md
@@ -9,7 +9,7 @@ English | [中文](README.zh.md)
 
 ## Summary
 
-Install and compose experimental capabilities explicitly, without a product-support commitment. Package naming and publication follow the [experimental package policy](../../scripts/experimental-package-policy.ts). The [optional-bundle rule](../../.agents/notes/implemented/architecture/2026-09-21-experimental-capabilities-as-optional-bundles.md) determines which capabilities ship switched off with the installation for explicit selection. The [plugin manager page](../client/ui-plugin-manager/README.md#use-this-package) owns which bundles appear by default and how to enable hidden ones.
+Install and compose experimental capabilities explicitly, without a product-support commitment. Package naming and publication follow the [experimental package policy](../../scripts/experimental-package-policy.ts). The [optional-bundle rule](../../.agents/notes/implemented/architecture/2026-09-21-experimental-capabilities-as-optional-bundles.md) determines which capabilities ship switched off with the installation for explicit selection in the GUI plugin manager’s Official group; the Liveshare owner bundle and its shared protocol package are among them. The [plugin manager page](../client/ui-plugin-manager/README.md#use-this-package) owns which bundles appear by default and how to enable hidden ones.
 
 ## Table of Contents
 
@@ -66,7 +66,8 @@ Promotion requires a named product role, documented public behavior and limitati
 | [`api-speech-to-text`](api-speech-to-text/README.md) | Authenticated transient transcription Remote | `ctx.speechController` |
 | [`client-ui-voice-input`](client-ui-voice-input/README.md) | Microphone capture and guarded draft insertion | — |
 | [`plugin-market-bundle`](plugin-market-bundle/README.md) | Default-disabled optional custom plugin indexes: the index service and the Discover tab | — |
-| [`liveshare-protocol`](liveshare-protocol/README.md) | Wire frames and the identity contract shared by the owner bundle and the Relay | — |
+| [`liveshare`](liveshare/README.md) | Opt-in LiveShare host bundle: Relay-backed Session sharing at the `view` or `write` tier, with forking and attachment uploads as independent switches | injects `connection`; serves the viewer page through the Host's web resources |
+| [`liveshare-protocol`](liveshare-protocol/README.md) | Wire frames and the identity contract shared by the owner bundle and the Relay | library and protocol — no ctx key |
 | [`voice-input-bundle`](voice-input-bundle/README.md) | Default-disabled optional voice input composition | — |
 | [`agent-team-profile`](agent-team-profile/README.md) | Agent Teams collaboration, tools, and Web UI bundle | — |
 | [`agent-team`](agent-team/README.md) | Named teammates with direct messages and a durable shared task board | `ctx.agentTeams` |
diff --git a/packages/experimental/README.zh.md b/packages/experimental/README.zh.md
index 3b4474b8d0..17964f4df7 100644
--- a/packages/experimental/README.zh.md
+++ b/packages/experimental/README.zh.md
@@ -9,7 +9,7 @@ kind: "package-group"
 
 ## 概述
 
-实验性能力可按需安装和组合，但不提供产品支持承诺。包命名和发布遵循[实验包策略](../../scripts/experimental-package-policy.ts)。[可选组合规则](../../.agents/notes/implemented/architecture/2026-09-21-experimental-capabilities-as-optional-bundles.zh.md)决定哪些能力以默认关闭状态随安装提供，以便显式选入。[插件管理页](../client/ui-plugin-manager/README.zh.md#use-this-package)管理哪些组合包默认展示，以及如何启用隐藏项。
+实验性能力可按需安装和组合，但不提供产品支持承诺。包命名和发布遵循[实验包策略](../../scripts/experimental-package-policy.ts)。[可选组合规则](../../.agents/notes/implemented/architecture/2026-09-21-experimental-capabilities-as-optional-bundles.zh.md)决定哪些能力以默认关闭状态随安装提供，并在 GUI 插件管理器的官方分组显式启用；Liveshare owner bundle 及其共享协议包也在其中。[插件管理页](../client/ui-plugin-manager/README.zh.md#use-this-package)管理哪些组合包默认展示，以及如何启用隐藏项。
 
 ## 目录
 
@@ -66,7 +66,8 @@ kind: "package-group"
 | [`api-speech-to-text`](api-speech-to-text/README.zh.md) | 带认证的临时转写 Remote | `ctx.speechController` |
 | [`client-ui-voice-input`](client-ui-voice-input/README.zh.md) | 麦克风录音与版本检查后的草稿插入 | — |
 | [`plugin-market-bundle`](plugin-market-bundle/README.zh.md) | 默认禁用的可选自定义插件索引：索引服务和「发现」标签页 | — |
-| [`liveshare-protocol`](liveshare-protocol/README.zh.md) | owner bundle 与 Relay 共用的线路帧与身份契约 | — |
+| [`liveshare`](liveshare/README.zh.md) | 可选 LiveShare host bundle：通过 Relay 以 `view` 或 `write` 档分享会话，派生与附件上传为独立开关 | 注入 `connection`；通过宿主 Web 资源提供查看页 |
+| [`liveshare-protocol`](liveshare-protocol/README.zh.md) | owner bundle 与 Relay 共用的线路帧与身份契约 | 库与协议，不使用 ctx key |
 | [`voice-input-bundle`](voice-input-bundle/README.zh.md) | 默认禁用的可选语音输入组合 | — |
 | [`agent-team-profile`](agent-team-profile/README.zh.md) | Agent Teams 协作、工具与 Web UI 组合包 | — |
 | [`agent-team`](agent-team/README.zh.md) | 具名 teammate，成员之间直接消息与持久共享任务板 | `ctx.agentTeams` |
diff --git a/packages/experimental/action-cards/package.json b/packages/experimental/action-cards/package.json
index fac942b15a..bee6c9b907 100644
--- a/packages/experimental/action-cards/package.json
+++ b/packages/experimental/action-cards/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-action-cards",
   "description": "Optional action cards below answers: one shared proposal tool, card state, user actions and status notices",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/agent-team-profile/package.json b/packages/experimental/agent-team-profile/package.json
index 3049498625..bc1c015e36 100644
--- a/packages/experimental/agent-team-profile/package.json
+++ b/packages/experimental/agent-team-profile/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-agent-team-profile",
   "description": "Agent Teams collaboration, tools, and Web UI in one experimental bundle",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/agent-team/package.json b/packages/experimental/agent-team/package.json
index c4eb1eac71..56d9db1930 100644
--- a/packages/experimental/agent-team/package.json
+++ b/packages/experimental/agent-team/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-agent-team",
   "description": "Implicit-root Agent Teams roster, direct peer messaging, and shared task DAG",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/api-speech-to-text/package.json b/packages/experimental/api-speech-to-text/package.json
index f0d44655d7..ecffb27cd6 100644
--- a/packages/experimental/api-speech-to-text/package.json
+++ b/packages/experimental/api-speech-to-text/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-api-speech-to-text",
   "description": "Authenticated experimental speech transcription for browser clients",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/auto-review/README.i18n.yaml b/packages/experimental/auto-review/README.i18n.yaml
index f045208cdf..b4345e70f0 100644
--- a/packages/experimental/auto-review/README.i18n.yaml
+++ b/packages/experimental/auto-review/README.i18n.yaml
@@ -45,8 +45,8 @@
   en: 9c3e575c061d53fe
   zh: 74db1c5a77b2d2a7
 /deepseek-ai-dsh-experimental-auto-review/model-experience/per-call-reviewer/kv-cache-effect:
-  en: 941f6afc75f896e7
-  zh: 54800fb8feaa6718
+  en: ec9e16640f1ea1bc
+  zh: 8052d486d61807c6
 /deepseek-ai-dsh-experimental-auto-review/model-experience/tool-denial:
   en: f9b4d7b686f14fc5
   zh: a2fac9a8eaf5e2a3
@@ -60,8 +60,8 @@
   en: 8da1089dee147f94
   zh: 87361347bfd10c6c
 /deepseek-ai-dsh-experimental-auto-review/known-limitations-and-deferred-work:
-  en: 6ab80358ea26c1c3
-  zh: b80dc28e3c3524bf
+  en: a48835d5113cbcfd
+  zh: 243ff731c27270b7
 /deepseek-ai-dsh-experimental-auto-review/known-limitations-and-deferred-work/dev-note:
   en: e67f633dc6fe7773
   zh: 3bb0c20c93f16f98
diff --git a/packages/experimental/auto-review/README.md b/packages/experimental/auto-review/README.md
index 273c40ce5f..63f136177d 100644
--- a/packages/experimental/auto-review/README.md
+++ b/packages/experimental/auto-review/README.md
@@ -110,7 +110,7 @@ One additional model request per supported call, without caching, retries, trunc
 
 #### KV Cache effect
 
-Each review's messages begin with all messages of the previous review, including its pending call, so routes that cache by prompt prefix, at message ends, or at a final marker with lookback reuse the policy and earlier history. Compaction, a cwd change, an earlier item leaving the surface, and the first review after a restart end that reuse once. Auto adds no dedicated runtime context or mode-switch prompt to the main agent.
+Each review's messages begin with all messages of the previous review, including its pending call, so routes that cache by prompt prefix, at message ends, or at a final marker with lookback reuse the policy and earlier history. Compaction, a cwd change, an earlier item leaving the surface, and the first review after a restart end that reuse once. Auto adds no dedicated runtime context or mode-switch prompt to the main agent. Each review request carries the reviewed Session's `sessionId` and `purpose: 'auto-review'` as model-hidden transport metadata. Routes that key prompt caching or request routing by Session, such as OpenAI `prompt_cache_key` and the `x-opencode-session` header that OpenCode requires, send reviews under that Session's key; [the DeepSeek Session-log upload](../../session/session-log-deepseek/README.md#request-field) contributes the canonical Session log when enabled and no registered exclusion matches.
 
 ### Tool denial
 
@@ -136,7 +136,6 @@ The denial appends an ordinary tool result; it does not rewrite earlier context
 - Model classification can be wrong. There are no deterministic tool exemptions, persistent grants, configurable policy, or retry layer.
 - In-process Auto children review their own calls. Out-of-process children retain their native permission systems after the parent delegation call is allowed.
 - The reviewer reads the Session action history through the deprecated synchronous `snapshotEvents()` reader under a line-scoped waiver. Prior calls, PTC starts, and the direct parent's initial prompt have no projection or paged reader yet, so the migration stays deferred by [the synchronous-read decision](../../../.agents/notes/implemented/architecture/2026-09-09-deprecate-synchronous-session-event-reads.md).
-- Review requests carry no `sessionId`, so OpenAI routes receive no `prompt_cache_key`. Passing it would also attach the DeepSeek session-log upload and session headers to review requests, which first needs a request-purpose decision.
 
 <a id="dev-note"></a>
 ### Dev Note
diff --git a/packages/experimental/auto-review/README.zh.md b/packages/experimental/auto-review/README.zh.md
index a7893291e6..39aa14ce15 100644
--- a/packages/experimental/auto-review/README.zh.md
+++ b/packages/experimental/auto-review/README.zh.md
@@ -110,7 +110,7 @@ Reviewer 使用最新 `request/header.config` 的 provider 与模型，并沿用
 
 #### KV Cache 影响
 
-每次评审的消息都以上一次评审的全部消息（包括其待审调用）开头，因此按 prompt 前缀、按消息结尾或在末尾标记处回溯缓存的路由都能复用策略与先前历史。Compaction、cwd 变化、较早条目离开 surface，以及重启后的第一次评审会让复用中断一次。Auto 不向主 agent 增加专门 runtime context 或模式切换提示词。
+每次评审的消息都以上一次评审的全部消息（包括其待审调用）开头，因此按 prompt 前缀、按消息结尾或在末尾标记处回溯缓存的路由都能复用策略与先前历史。Compaction、cwd 变化、较早条目离开 surface，以及重启后的第一次评审会让复用中断一次。Auto 不向主 agent 增加专门 runtime context 或模式切换提示词。每个评审请求都携带被评审 Session 的 `sessionId` 和 `purpose: 'auto-review'`，作为模型不可见的传输元数据。按 Session 划分 prompt 缓存或请求路由的路由（例如 OpenAI 的 `prompt_cache_key`，以及 OpenCode 要求的 `x-opencode-session` header）会以该 Session 的键发送评审；[DeepSeek session-log 上传](../../session/session-log-deepseek/README.zh.md#request-field)在启用且没有已注册排除条件匹配时贡献权威 Session 日志。
 
 ### 工具拒绝
 
@@ -136,7 +136,6 @@ Reviewer 使用最新 `request/header.config` 的 provider 与模型，并沿用
 - 模型分类可能出错。不提供确定性工具豁免、持久 grant、可配置策略或重试层。
 - 进程内 Auto child 独立审查自身调用。进程外 child 在父委派调用获准后保留原生权限系统。
 - reviewer 在带行级豁免的情况下，通过已废弃的同步 `snapshotEvents()` 读取 Session 动作历史。此前的调用、PTC start 与直接父级的初始 prompt 目前都没有投影或分页读取方，因此迁移按[同步读取决策](../../../.agents/notes/implemented/architecture/2026-09-09-deprecate-synchronous-session-event-reads.zh.md)继续延期。
-- 评审请求不携带 `sessionId`，因此 OpenAI 路由不会收到 `prompt_cache_key`。传入它还会让评审请求附带 DeepSeek session-log 上传与 session header，需要先做请求用途决策。
 
 <a id="dev-note"></a>
 ### 开发备注
diff --git a/packages/experimental/auto-review/package.json b/packages/experimental/auto-review/package.json
index f8b2aeb197..e388365620 100644
--- a/packages/experimental/auto-review/package.json
+++ b/packages/experimental/auto-review/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-auto-review",
   "description": "Per-tool LLM authorization review for the DeepSeek Harness Auto permission preset",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "repository": {
     "type": "git",
diff --git a/packages/experimental/auto-review/src/index.ts b/packages/experimental/auto-review/src/index.ts
index f612447720..29df7771f0 100644
--- a/packages/experimental/auto-review/src/index.ts
+++ b/packages/experimental/auto-review/src/index.ts
@@ -8,6 +8,12 @@
  * @module @deepseek-ai/dsh-experimental-auto-review
  */
 
+declare module '@deepseek-ai/dsh-llm/types' {
+  interface LlmRequestPurposeMap {
+    'auto-review': true
+  }
+}
+
 import type {} from '@deepseek-ai/dsh-tool-executor-ptc/types'
 import type {} from '@deepseek-ai/dsh-working-directory'
 import { FiberState, type Context } from '@deepseek-ai/cordis'
@@ -672,12 +678,15 @@ async function classifyRisk(
   const snapshot = snapshotAutoReview(agent, exec, cwd, shown)
   shown.set(snapshot.pending.key, snapshot.pending.schema)
   // This review prompt is sent only through ctx.llm.stream and never enters a Session log.
+  // The Session id also supplies provider routing and request-extension identity.
   const options: GenerateOptions = deepFreeze({
     provider: snapshot.provider,
     model: snapshot.model,
     system: REVIEW_POLICY,
     messages: reviewMessages(snapshot),
     temperature: 0,
+    sessionId: agent.session.id,
+    purpose: 'auto-review',
     signal,
   })
   return readDecision(ctx.llm.stream(options))
diff --git a/packages/experimental/auto-review/tests/auto-review.spec.ts b/packages/experimental/auto-review/tests/auto-review.spec.ts
index 20ab50c4c4..45e0b8dcb5 100644
--- a/packages/experimental/auto-review/tests/auto-review.spec.ts
+++ b/packages/experimental/auto-review/tests/auto-review.spec.ts
@@ -414,8 +414,9 @@ describe('native review request', () => {
       model: 'same-model',
       system: EXPECTED_REVIEW_POLICY,
       temperature: 0,
+      sessionId: session.id,
+      purpose: 'auto-review',
     })
-    expect(request).not.toHaveProperty('sessionId')
     expect(request.maxTokens).toBeUndefined()
     expect(request.tools).toBeUndefined()
     for (const message of request.messages) {
@@ -1496,17 +1497,23 @@ describe('cancellation and integration teardown', () => {
       const probe = registerProbe(ctx)
       const session = sessions.prepare(SessionId(`shutdown-${outcome}`), { meta: { cwd: '/workspace' } })
       const events: SessionEvent[] = []
-      ctx.effect(function* () {
-        const detach = sessions.enter(session)
-        yield () => {
-          detach()
-          detached.resolve(undefined)
-        }
-        yield ctx.on('session/event', (subject, event) => {
-          if (subject === session) events.push(event)
-        })
-        sessions.announce(session)
-        yield () => releaseSession.promise
+      // A dependent of a root-provided service unloads with Auto, before the root's own effects.
+      await ctx.plugin({
+        inject: ['workingDirectory'],
+        apply: (scope: Context) => {
+          scope.effect(function* () {
+            const detach = sessions.enter(session)
+            yield () => {
+              detach()
+              detached.resolve(undefined)
+            }
+            yield scope.on('session/event', (subject, event) => {
+              if (subject === session) events.push(event)
+            })
+            sessions.announce(session)
+            yield () => releaseSession.promise
+          })
+        },
       })
       ctx.permissionPresets.set(session, AUTO_PRESET)
       const agent = agentFor(session)
diff --git a/packages/experimental/badge-skill-bundle/package.json b/packages/experimental/badge-skill-bundle/package.json
index d8c9dc4090..b35ca7006f 100644
--- a/packages/experimental/badge-skill-bundle/package.json
+++ b/packages/experimental/badge-skill-bundle/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-badge-skill-bundle",
   "description": "Let agents add a “powered by dsh” badge to documents, pull requests, and other outputs.",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/browser-use-chrome-devtools-mcp/package.json b/packages/experimental/browser-use-chrome-devtools-mcp/package.json
index b3451f5ca7..588b574d49 100644
--- a/packages/experimental/browser-use-chrome-devtools-mcp/package.json
+++ b/packages/experimental/browser-use-chrome-devtools-mcp/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-browser-use-chrome-devtools-mcp",
   "description": "Experimental per-Session Chromium browser tools through chrome-devtools-mcp",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/browser-use-playwright-mcp/package.json b/packages/experimental/browser-use-playwright-mcp/package.json
index c2d88c7571..17fe3cd2c6 100644
--- a/packages/experimental/browser-use-playwright-mcp/package.json
+++ b/packages/experimental/browser-use-playwright-mcp/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-browser-use-playwright-mcp",
   "description": "Experimental per-Session Chromium browser tools through @playwright/mcp",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/browser-use-runtime/package.json b/packages/experimental/browser-use-runtime/package.json
index 8d018b440d..07a61677e4 100644
--- a/packages/experimental/browser-use-runtime/package.json
+++ b/packages/experimental/browser-use-runtime/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-browser-use-runtime",
   "description": "Session-owned browser resource lifecycles and MCP integration for experimental providers",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/browser-use-stagehand-native/package.json b/packages/experimental/browser-use-stagehand-native/package.json
index ffd7342b04..7aad58fe2b 100644
--- a/packages/experimental/browser-use-stagehand-native/package.json
+++ b/packages/experimental/browser-use-stagehand-native/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-browser-use-stagehand-native",
   "description": "Experimental Stagehand browser tools with separately configured native models",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/claude-code-mods/README.i18n.yaml b/packages/experimental/claude-code-mods/README.i18n.yaml
index bf0aada73f..199716f877 100644
--- a/packages/experimental/claude-code-mods/README.i18n.yaml
+++ b/packages/experimental/claude-code-mods/README.i18n.yaml
@@ -36,8 +36,8 @@
   en: 7b48e62da7d73a85
   zh: a7f8e46cecb726cf
 /deepseek-ai-dsh-experimental-claude-code-mods/understand-the-implementation/the-chain:
-  en: 5330d8f5a6c9b992
-  zh: 8f6d167642a1c263
+  en: 655859f9ac0f0d25
+  zh: 19ed5070afcb5841
 /deepseek-ai-dsh-experimental-claude-code-mods/understand-the-implementation/mapping-onto-the-harness:
   en: 955ed36f58b0a5c4
   zh: 65b2f0ddc1154be4
diff --git a/packages/experimental/claude-code-mods/README.md b/packages/experimental/claude-code-mods/README.md
index 24f1f0c268..7fe0e75f28 100644
--- a/packages/experimental/claude-code-mods/README.md
+++ b/packages/experimental/claude-code-mods/README.md
@@ -119,6 +119,8 @@ A call whose service is not composed rejects with the missing service's package
 
 [`chain.ts`](src/chain.ts) runs one event through the selected hooks, outermost first, with the engine behavior at the bottom. Each hook's `next` delegates beneath once: a second call returns the first run, and a run a hook started is awaited before the hook's own answer settles. A hook that throws, times out, or settles without a result is skipped and reported once per failure kind, the result from beneath stands when it had already called `next`, and a `.catch` handler may answer in its place. The budget clock counts only the hook's own running time: it pauses inside `next` and inside every `$` call except `$.clock.sleep`. [`engine.ts`](src/engine.ts) owns the registry, per-session `$.state`, timers keyed by session and mod, and the two dispatch directions: an engine event reaches every selected hook, while a `$` call raised by one mod reaches only the mods loaded before it.
 
+The bridge cancels detached calls when its fiber begins unloading, before dependent mod disposers wait for their timer callbacks. Provider cleanup then removes registrations and drains the remaining work.
+
 ### Mapping onto the harness
 
 [`index.ts`](src/index.ts) registers the listeners. `tool.call` runs around `tools/execute`, so the harness permission decision precedes the chain; a `{ deny }` becomes an error result with the reason, a `{ result }` becomes a successful result when the tool is mod-registered or the value satisfies the tool's output schema, and an error-shaped result otherwise. A result a hook rewrote after `next` is installed as replacement content through `tools/post-execute`. A hook that passes rewritten arguments to `next` is skipped with a report, because the call's arguments are already logged. [`host-ops.ts`](src/host-ops.ts) holds the engine behavior for each `$` call over `ctx.get(...)` services; the directory owner is required and other services are read on demand. [`surfaces.ts`](src/surfaces.ts) keeps one band per session: it raises `ui.render`, validates and serializes the tree with [`elements.ts`](src/elements.ts), holds each `Button`'s `onPress` behind a per-drawing action id, subscribes the band to the `$.state` slots the drawing read, and streams generations to the Client through the `claudeCodeMods` Remote (`watchBand`, `pressBand`).
diff --git a/packages/experimental/claude-code-mods/README.zh.md b/packages/experimental/claude-code-mods/README.zh.md
index 6ed7992f33..d8c51ea02d 100644
--- a/packages/experimental/claude-code-mods/README.zh.md
+++ b/packages/experimental/claude-code-mods/README.zh.md
@@ -119,6 +119,8 @@ Blast Radius 的 DSH 包装使用当前运行的可执行文件提供 Node 计
 
 [`chain.ts`](src/chain.ts) 让一个事件穿过选中的钩子，最外层在前，引擎行为在底部。每个钩子的 `next` 只向下委托一次：第二次调用返回第一次的运行结果，钩子已启动的下层运行会在其自身答案落定前被等待。抛出、超时或没有结果就结束的钩子会被跳过并按失败类型报告一次，若它已调用 `next` 则下层结果生效，`.catch` 处理器可代为作答。预算时钟只计钩子自身的运行时间：在 `next` 内与除 `$.clock.sleep` 外的每个 `$` 调用内暂停。[`engine.ts`](src/engine.ts) 拥有注册表、按会话的 `$.state`、按会话与模组键控的定时器，以及两个分发方向：引擎事件到达所有选中的钩子，而一个模组发起的 `$` 调用只到达在它之前加载的模组。
 
+桥接服务在其 fiber 开始卸载时取消后台调用，随后依赖它的模组才等待各自的定时器回调结束。服务清理再移除注册并等待其余工作完成。
+
 ### 映射到 harness
 
 [`index.ts`](src/index.ts) 注册监听器。`tool.call` 包裹 `tools/execute`，因此 harness 的权限决定先于链；`{ deny }` 成为带原因的错误结果，`{ result }` 在工具为模组注册或值满足工具输出 schema 时成为成功结果，否则为错误形态的结果。钩子在 `next` 之后改写的结果经 `tools/post-execute` 作为替换内容安装。向 `next` 传入改写参数的钩子会被跳过并报告，因为调用参数已经写入日志。[`host-ops.ts`](src/host-ops.ts) 持有每个 `$` 调用基于 `ctx.get(...)` 服务的引擎行为；目录所有者为必需服务，其他服务按需读取。[`surfaces.ts`](src/surfaces.ts) 为每个会话保留一条横幅：触发 `ui.render`，用 [`elements.ts`](src/elements.ts) 校验并序列化树，把每个 `Button` 的 `onPress` 保存在按绘制分配的动作 id 之后，让横幅订阅该次绘制读取的 `$.state` 槽位，并通过 `claudeCodeMods` Remote（`watchBand`、`pressBand`）把各代推流给 Client。
diff --git a/packages/experimental/claude-code-mods/package.json b/packages/experimental/claude-code-mods/package.json
index 1df9205035..187aab86da 100644
--- a/packages/experimental/claude-code-mods/package.json
+++ b/packages/experimental/claude-code-mods/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-claude-code-mods",
   "description": "Experimental bridge: load Claude Code mods (hooks modules) and run their hook chains on DeepSeek Harness extension points",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/claude-code-mods/src/index.ts b/packages/experimental/claude-code-mods/src/index.ts
index b86713bff7..5aa795083f 100644
--- a/packages/experimental/claude-code-mods/src/index.ts
+++ b/packages/experimental/claude-code-mods/src/index.ts
@@ -10,7 +10,7 @@
  * @module @deepseek-ai/dsh-experimental-claude-code-mods
  */
 
-import type { Context } from '@deepseek-ai/cordis'
+import { FiberState, type Context } from '@deepseek-ai/cordis'
 import type {} from '@deepseek-ai/dsh-working-directory'
 import z from '@deepseek-ai/schemastery'
 import type { Agent, PreStepDecision } from '@deepseek-ai/dsh-agent'
@@ -274,6 +274,10 @@ export class ClaudeCodeMods extends TypertRemoteService {
     })
     this.engine = engine
     const registrations = this.registrations
+    // Dependent mod disposers join timer callbacks before this provider's cleanup runs.
+    ctx.on('internal/status', (fiber) => {
+      if (fiber === ctx.fiber && fiber.state === FiberState.UNLOADING) detached.cancel()
+    })
     ctx.effect(() => async () => {
       // Cancel first: a timer callback waiting inside a `$` call ends on this signal, and engine.dispose awaits it.
       detached.cancel()
diff --git a/packages/experimental/claude-code-mods/tests/bridge.spec.ts b/packages/experimental/claude-code-mods/tests/bridge.spec.ts
index aeacb91677..03e455700d 100644
--- a/packages/experimental/claude-code-mods/tests/bridge.spec.ts
+++ b/packages/experimental/claude-code-mods/tests/bridge.spec.ts
@@ -922,17 +922,19 @@ describe('loading diagnostics and configuration', () => {
     const mod = writeMod('sleeper-mod', `
       export function register(on) {
         on('session.start', async ($, e, next) => {
-          $.clock.after(1, async () => { await $.clock.sleep(60_000) })
+          $.clock.after(1, async () => {
+            const sleeping = $.clock.sleep(60_000)
+            await $.ui.log('timer sleeping')
+            await sleeping
+          })
           return next(e)
         })
       }
     `)
     const h = await harness([mod], new MockAdapter([]))
     await h.agent()
-    await new Promise(resolve => setTimeout(resolve, 20))
-    const started = Date.now()
+    await vi.waitFor(() => { expect(h.info.mock.calls.flat().join(' ')).toContain('timer sleeping') })
     await h.mods.dispose()
-    expect(Date.now() - started).toBeLessThan(5_000)
     expect(h.warn).toHaveBeenCalledWith('claude-code-mods: sleeper-mod: timer callback failed: claude-code-mods disposed')
   })
 
diff --git a/packages/experimental/client-ui-action-cards/package.json b/packages/experimental/client-ui-action-cards/package.json
index 89db21fcef..b2208f6770 100644
--- a/packages/experimental/client-ui-action-cards/package.json
+++ b/packages/experimental/client-ui-action-cards/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/client-ui-agent-team/package.json b/packages/experimental/client-ui-agent-team/package.json
index 340ba4d79b..17963f6de8 100644
--- a/packages/experimental/client-ui-agent-team/package.json
+++ b/packages/experimental/client-ui-agent-team/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-client-ui-agent-team",
   "description": "Web Agent Teams roster, task board, and teammate navigation",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/client-ui-claude-code-mods/package.json b/packages/experimental/client-ui-claude-code-mods/package.json
index 1a7c3ae29c..46b6ce37e4 100644
--- a/packages/experimental/client-ui-claude-code-mods/package.json
+++ b/packages/experimental/client-ui-claude-code-mods/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-client-ui-claude-code-mods",
   "description": "Web band above the prompt for Claude Code mods: draws each session's mod tree and sends button presses back to the bridge",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/client-ui-cot-translation/package.json b/packages/experimental/client-ui-cot-translation/package.json
index c2353b35ea..3f0bda1ac1 100644
--- a/packages/experimental/client-ui-cot-translation/package.json
+++ b/packages/experimental/client-ui-cot-translation/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-client-ui-cot-translation",
   "description": "Optional machine translation of expanded reasoning, preserving original Session text",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/client-ui-creation-recommendations/package.json b/packages/experimental/client-ui-creation-recommendations/package.json
index e31c457ead..f9ed3edb96 100644
--- a/packages/experimental/client-ui-creation-recommendations/package.json
+++ b/packages/experimental/client-ui-creation-recommendations/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/client-ui-forge/README.i18n.yaml b/packages/experimental/client-ui-forge/README.i18n.yaml
index 8c53380124..0ba0b646c1 100644
--- a/packages/experimental/client-ui-forge/README.i18n.yaml
+++ b/packages/experimental/client-ui-forge/README.i18n.yaml
@@ -9,29 +9,29 @@
   en: 8ca3d802a44c6fd1
   zh: 2723c9e28ecea7f7
 /deepseek-ai-dsh-experimental-client-ui-forge/summary:
-  en: 82f4b3ccb87e8466
-  zh: 3d3e24278917e9e9
+  en: ba5e34b6896e03e6
+  zh: 516d4ae6aa123804
 /deepseek-ai-dsh-experimental-client-ui-forge/table-of-contents:
   en: d152484eb41ac6b4
   zh: 2f8a621b991260a1
 /deepseek-ai-dsh-experimental-client-ui-forge/use-this-package:
-  en: 4c7d1cbc76085d84
-  zh: 3f8fc65d6bea1cfb
+  en: 2e48bb08a23d0cf4
+  zh: 3cbf34e325cd1d8b
 /deepseek-ai-dsh-experimental-client-ui-forge/understand-the-implementation:
-  en: 013e84157a09da7e
-  zh: 99b4f276385d5e16
+  en: 1597090848784354
+  zh: e0dcabfa803fe421
 /deepseek-ai-dsh-experimental-client-ui-forge/further-exploration:
   en: fa4d8c579ffc49ff
   zh: 5856ed7469e4585b
 /deepseek-ai-dsh-experimental-client-ui-forge/model-experience:
-  en: 8dbddff9f5369ca0
-  zh: 59651db8ae490342
+  en: f7a1517de6265e7b
+  zh: 4e4ddc7e1fde8e54
 /deepseek-ai-dsh-experimental-client-ui-forge/model-experience/kv-cache-effect:
-  en: e29ceb229a7c5b11
-  zh: 6f6364154b43bb94
+  en: 2bc25a99e17789c4
+  zh: 4bec723fbf249d28
 /deepseek-ai-dsh-experimental-client-ui-forge/known-limitations-and-deferred-work:
-  en: a49947fd6d5909ad
-  zh: 47afed048292b285
+  en: 03a5b04c9e7bf1b1
+  zh: f606dabcf0ed2f1e
 /deepseek-ai-dsh-experimental-client-ui-forge/known-limitations-and-deferred-work/dev-note:
   en: e67f633dc6fe7773
   zh: 3bb0c20c93f16f98
diff --git a/packages/experimental/client-ui-forge/README.md b/packages/experimental/client-ui-forge/README.md
index e38514f161..ef855320dd 100644
--- a/packages/experimental/client-ui-forge/README.md
+++ b/packages/experimental/client-ui-forge/README.md
@@ -9,7 +9,7 @@ English | [中文](README.zh.md)
 
 ## Summary
 
-This optional two-face package shows the change requests a Session created or pushed and their changes, and lets a new Session start in its own Git worktree. The Host half is the `forgePanel` Remote: it inspects the Session's checkout read-only, checks code host sign-in, streams [bound change requests](../forge-session/README.md) with their polled status for one Session or for the Session list, reads diffs, and creates a requested worktree while the first message waits in the Session's inbox. The Client half adds a sidebar tab, a changes view, header entries, a New Session option, a creation card, Session list icons, and toasts.
+This optional package shows a Session's created or pushed change requests and their changes, and starts new Sessions in their own Git worktrees. The Host `forgePanel` Remote inspects the checkout using the Session's permissions, checks code host sign-in, streams [bound change requests](../forge-session/README.md) with their polled status for one Session or for the Session list, reads diffs, and creates a requested worktree while the first message waits in the Session's inbox. The Client adds a sidebar tab, a changes view, header entries, a New Session option, a creation card, Session list icons, and toasts.
 
 ## Table of Contents
 
@@ -29,17 +29,24 @@ Enable the [forge bundle](../forge-bundle/README.md) on the Plugins page; it com
 
 Panel text follows the application language: Chinese, English, Japanese, Spanish, French, German, Russian, or Portuguese.
 
-- **Worktree option** — on the New Session screen, Worktree sits at the right end of the row with the workspace and mode pickers. Checking it shows the base branch, the current branch by default; the menu lists recent local branches. The option is disabled, with the reason in its tooltip, outside a Git checkout, in a read-only Session, and when the checkout or its Git directory lies outside the Session's writable root, as for a project that is itself a linked worktree. Sending the first message hands it to the Session at once, and it waits there while the branch `dsh-<first 8 hexadecimal digits of the Session id>-<4 random hexadecimal digits>` is created from the base under the repository's `.agents/worktrees/` and its checkout becomes the Session's working directory; the message's turn starts once the worktree exists.
+- **Worktree option** — on the New Session screen, New worktree sits beside the current branch at the right end of the row with the workspace and mode pickers. Both stay hidden outside a Git checkout. The branch is read-only until New worktree is checked, when it becomes the base branch selector; the menu lists recent local branches. If permissions block an existing request, its selected base stays visible without a selector and the request can still be withdrawn. Hovering, focusing, or tapping the read-only branch or base shows its full description. The option is disabled, with the reason in its tooltip, in a read-only Session and when the checkout or its Git directory lies outside the Session's writable root, as for a project that is itself a linked worktree. Sending the first message hands it to the Session at once, and it waits there while the branch `dsh-<first 8 hexadecimal digits of the Session id>-<4 random hexadecimal digits>` is created from the base under the repository's `.agents/worktrees/` and its checkout becomes the Session's working directory; the message's turn starts once the worktree exists.
 - **Creation card** — while the worktree is created, a card above the composer shows the new branch and its two steps, creating the branch and checking out files; More details adds the branch and base. Cancel stops the attempt. After a stopped or failed attempt the message keeps waiting, and the card shows the reason of a failure: Retry tries again with a new branch name, and Continue without a worktree withdraws the request so the message goes on in the current checkout.
 - **Removed worktree** — when the worktree the Session works in has been removed outside the Session, a card above the composer says so, and a message sent meanwhile waits without starting its turn until the worktree is restored or left; the card then says that the message goes on afterwards. Restore worktree, also offered as Restore in the tab, checks the branch out again at the same directory, or creates the branch again at the commit it started from when the branch is gone too; while it runs, the card follows its two steps, preparing the worktree and checking out files, and the tab's Restore turns into a spinner. Continue in the project moves the Session to the source checkout. Meanwhile the tab's first row shows a warning glyph.
+- **Code review and changes** — on the right-sidebar start page, opens the same change request tab as the Session header button.
 - **Header button** — appears when the Session has bound change requests or its directory is inside a Git checkout, and shows or hides the tab. A red dot marks an open change request with failed checks, requested changes, or conflicts.
 - **Session list** — after a Session row's time, a branch glyph shows while the Session works in the worktree the panel created for it, and a glyph shows the state of its most urgent change request: one needing attention first, then open, draft, not yet polled, merged, and closed. The glyph of an open change request keeps the row's subdued color with a dot for running, passed, or failed checks; merged and closed ones keep their state colors. The row's hover card names the worktree branch and what it started from, then up to three change requests with their number, title, state, and checks, and how many more there are. A restart shows the states known before it until the next poll.
-- **Tab** — the first row names the checked-out branch, or the abbreviated commit on a detached HEAD, after a folder glyph for the project directory or a branch glyph for a worktree, and the kind of checkout, which is the worktree the Session created with its base, another worktree, or the project directory; its tooltip adds the path with the Host home shortened to `~`, its button copies the full path, and for a removed worktree it offers Restore. Below it, each change request card shows a glyph for its state, its title, which opens it in the browser, and its number; the glyph tells open, draft, merged, and closed apart, and marks an open one that is not a draft with failed checks, requested changes, or conflicts as needing attention, as the header button's red dot does. The card's header also offers Open in browser, Copy change request link, and Remove from this Session, whose toast offers Undo. A collapsed card adds the checks of an open change request and the most urgent of requested changes, conflicts, or draft, or when a merged or closed one ended. An expanded card shows the head and base branches, then one row per fact: for an open change request the checks, whose row opens the list of checks with failed ones first and their durations and links, the review decision with unresolved threads, and the merge state, or when a merged or closed one ended; and the changed lines, formatted in the selected UI language, whose row opens the changes view. An open draft also offers Ready for review; a change request the host would merge now offers Merge, whose menu lists the methods the repository allows with the user's usual one chosen and pins the displayed head when opened. Confirm merge uses that head; a polled head change disables confirmation until the menu is reopened after review. A toast reports each outcome, and new commits since that head stop the merge. When exactly one bound change request is open, its card starts expanded. Refresh inspects the checkout, checks sign-in, and polls every change request again; its icon turns until the inspection and the sign-in check end. A banner shows the `gh auth login` command when sign-in is missing.
+- **Tab** — the first row names the checked-out branch, or the abbreviated commit on a detached HEAD, after a folder glyph for the project directory or a branch glyph for a worktree, and the kind of checkout, which is the worktree the Session created with its base, another worktree, or the project directory; its tooltip adds the path with the Host home shortened to `~`, its button copies the full path, and for a removed worktree it offers Restore. Below it, each change request card shows a glyph for its state, its title, which opens it in the browser, and its number; the glyph tells open, draft, merged, and closed apart, and marks an open one that is not a draft with failed checks, requested changes, or conflicts as needing attention, as the header button's red dot does. The card's header also offers Open in browser, Copy change request link, and Remove from this Session, whose toast offers Undo. Cancelled checks have a separate count; a collapsed card names cancellations when no listed check failed. A collapsed card adds the checks of an open change request and the most urgent of requested changes, conflicts, or draft, or when a merged or closed one ended. An expanded card shows the head and base branches, then one row per fact: for an open change request the checks, whose row opens the list of checks with failed ones first and their durations and links, the review decision with unresolved threads, and the merge state, or when a merged or closed one ended; and the changed lines, formatted in the selected UI language, whose row opens the changes view. An open draft also offers Ready for review; a change request the host would merge now offers Merge, whose menu lists the methods the repository allows with the user's usual one chosen and pins the displayed head when opened. Confirm merge uses that head; a polled head change disables confirmation until the menu is reopened after review. A toast reports each outcome, and new commits since that head stop the merge. When exactly one bound change request is open, its card starts expanded. Refresh inspects the checkout, checks sign-in, and polls every change request again; its icon turns until the inspection and the sign-in check end. A banner shows the `gh auth login` command when sign-in is missing.
 - **Local changes card** — while the `branch` scope changes files and no open change request has the checked-out branch as its head, a card above the change requests names the ref it compares with, such as `HEAD → origin/main`, and shows the added and deleted lines and the number of files, which open the changes view; its file list, which names files as the changes view does, opens the view at one file. Create change request, offered once the code host repository is recognized, sends the Session a user message in the UI language that asks the Agent to create a change request for these changes, and a toast reports whether it was sent.
-- **Changes view** — The Changes row of an expanded change request card and the local changes card open a right-sidebar tab that lists the changed files. A local view shows Branch by default: the working tree and untracked files against the fork point, which is the base commit of the worktree the Session created, else the merge base of HEAD with the default branch of the code host remote. Uncommitted compares them with HEAD, Unstaged with the index, and Staged compares the index with HEAD. A change request view shows the host's diff at its head and says how many commits the checked-out branch has beyond that head when it is the change request's head branch. The toolbar jumps to a file, totals the changed lines, refreshes, and switches between two columns and one and between wrapped and cut long lines. Visited changes tabs stay mounted across tab and Session switches, hiding the sidebar, and docking changes, preserving file folds, revealed large files, expanded context, layout, and scroll position while the diff is unchanged. Hidden changes views release their panel subscription and defer diff reads; returning reads again only when the latest head or local summary differs. A refresh that replaces the diff discards expanded context, and changed content may move the reading position. Temporary menus close when the view is hidden. Closing the tab or reloading the application discards this progress. Files are named before their directories, which use smaller subdued type and shorten first; hovering one shows its complete path, and both paths for a renamed file. Clicking the file name or directory in either diff source copies its repository-relative path and reports success or failure in a toast. Each file shows badges for a new, deleted, or renamed file, the last naming the old file name, or the old path when only the directory changed, and, in the Branch scope, an untracked one, and a menu that copies its path and opens the whole file in the sidebar for local changes or its page at the head in the browser for a change request. Unchanged lines between hunks collapse into rows that expand from the file's new side: the working tree, the index for Staged, or the head commit through the code host; a file that changed after the diff was read stays collapsed until the view reads again. A binary file and an untracked file over `maxDiffBytes` show a note instead of their lines, a file whose hunks draw more than 1,000 lines starts as one collapsed strip that names its changed lines and draws them when opened, and a file below files that change more than 5,000 lines starts collapsed. The view reads again on Refresh and the page refresh shortcut, on each navigation, when the change request's head moves, and when the Branch scope's summary changes; a change request's view first waits for the status that names its head, unless no provider serves it or that poll failed. While a read replaces changes already shown, the Refresh icon turns. A change request whose diff the code host or its provider refuses over a size limit, such as a GitHub diff over 300 files, says its changes are too large to show here and offers View in browser; another failed read offers Retry and, for a change request, View in browser. A change request's diff is downloaded once per head commit and base branch while it stays cached, so reopening, refreshing, and navigating at the same head read nothing from the host.
+- **Changes view** — The Changes row of an expanded change request card and the local changes card open a right-sidebar tab that lists the changed files. The local tab is named Local changes and shows Branch by default: the working tree and untracked files against the fork point, which is the base commit of the worktree the Session created, else the merge base of HEAD with the default branch of the code host remote. Uncommitted compares them with HEAD, Unstaged with the index, and Staged compares the index with HEAD. A change request view shows the host's diff at its head and says how many commits the checked-out branch has beyond that head when it is the change request's head branch. The toolbar jumps to a file, totals the changed lines, refreshes, and switches between two columns and one and between wrapped and cut long lines. Visited changes tabs stay mounted across tab and Session switches, hiding the sidebar, and docking changes, preserving file folds, revealed large files, expanded context, layout, and scroll position while the diff is unchanged. Hidden changes views release their panel subscription and defer diff reads; returning reads again only when the latest head or local summary differs. A refresh that replaces the diff discards expanded context, and changed content may move the reading position. Temporary menus close when the view is hidden. Closing the tab or reloading the application discards this progress. Files are named before their directories, which use smaller subdued type and shorten first; hovering one shows its complete path, and both paths for a renamed file. Each file shows badges for a new, deleted, or renamed file, the last naming the old file name, or the old path when only the directory changed, and, in the Branch scope, an untracked one, and a menu that copies its path and opens the whole file in the sidebar for local changes or its page at the head in the browser for a change request. Unchanged lines between hunks collapse into rows that expand from the file's new side: the working tree, the index for Staged, or the head commit through the code host; a file that changed after the diff was read stays collapsed until the view reads again. A binary file and an untracked file over `maxDiffBytes` show a note instead of their lines, a file whose hunks draw more than 1,000 lines starts as one collapsed strip that names its changed lines and draws them when opened, and a file below files that change more than 5,000 lines starts collapsed. The view reads again on Refresh and the page refresh shortcut, on each navigation, when the change request's head moves, and when the Branch scope's summary changes; a change request's view first waits for the status that names its head, unless no provider serves it or that poll failed. While a read replaces changes already shown, the Refresh icon turns. A change request whose diff the code host or its provider refuses over a size limit, such as a GitHub diff over 300 files, says its changes are too large to show here and offers View in browser; another failed read offers Retry and, for a change request, View in browser. A change request's diff is downloaded once per head commit and base branch while it stays cached, so reopening, refreshing, and navigating at the same head read nothing from the host.
+
+The checks row initially shows the polling preview. While it is incomplete, the card uses the host’s aggregate outcome without a failure count and labels the loaded check count as partial. Opening the list loads the remaining pages for that PR through `changeRequestChecks`; its deadline is independent of polling. A failed read keeps the preview and offers Retry. Closing the list, changing the head, or unmounting cancels the read; late results are ignored. Reopening reads current details. The Remote requires a visible Session binding and rejects a response for a different head commit.
+
+Click the diff content to focus it. Left and Right move to the previous and next file in diff order and expand it; navigation stops at the first and last file. Up and Down keep their normal scrolling behavior. After manual scrolling, file navigation starts from the file at the top of the viewport. Text editing, non-collapsed text selections, modified keys, menus, and file-tree controls keep their own keyboard behavior.
 
 `gitCommand`, `gitTimeoutMs`, `graceMs`, `maxOutputBytes`, `readinessTimeoutMs`, `maxBranches`, `worktreePrefix`, `maxDiffBytes`, `maxUntrackedFiles`, and `maxCachedDiffBytes` are listed in the [configuration catalog](../../../docs/config-catalog.md#deepseek-aidsh-experimental-client-ui-forge).
 
+All files opens a searchable directory tree. Single-child directories share a row, and renamed files also match their old path. A wide changes pane shows the same tree beside the diff; its File tree toolbar button cycles through left, right, and hidden, starting on the left. Its accessible name describes the next action, and focus stays on the button when it moves or hides the tree. The search, folds, selection, and width survive moving or hiding the tree and switching tabs or Sessions. Drag the divider or use its arrow keys to resize the tree. Files and folders reserve the same disclosure column so each child is indented from its parent. Local changes and each PR retain separate tabs. Select code text or use line numbers to select a range within one displayed hunk and side; text selection and copying stay on the starting side. The plus button opens the plain-text comment editor. It accepts newlines and IME composition; only its action buttons submit the comment. Drag its lower edge to adjust the height. Add to input inserts a removable quote into the main composer; multiple quotes are sent together only when the user sends that composer. The GitHub split button starts or adds to a pending review; its menu publishes a single comment immediately. Comments remain beside their code after quoting, queueing, or publishing. Pending comments are edited or removed there. Request changes requires a review summary; the dialog explains this beside the summary field and announces the requirement when the decision changes. Submit review in the PR title bar opens a centered dialog showing only the pending count, summary, and Comment, Approve, or Request changes. Added and deleted files show only their populated line-number column. Pending reviews and comment records are stored in this browser per Session and tab, including the original PR head commit. Switching Sessions or hiding the pane retains them; closing the tab clears its comments, summary, and decision, and reopening starts an empty review. Published GitHub comments and references already added to the main composer are unaffected. Records whose code changed remain visible below their file, or after the diff when the file is absent. A changed head requires fresh line selections. While the tab remains open, an uncertain write stays blocked across reloads until the user checks GitHub and explicitly permits another submission.
+
 -----
 
 <a id="understand-the-implementation"></a>
@@ -50,7 +57,7 @@ Panel text follows the application language: Chinese, English, Japanese, Spanish
 
 `ForgePanelController` keeps one `SessionPanel` per followed Session and disposes it when the last follower leaves. A panel starts with the Session's working directory and bindings, re-inspects after each `working-directory/change`, `tool/result`, and `sandbox/mode` event, and publishes a new `ForgePanelState` for every change. Each change request keeps the latest snapshot a poll returned while later polls fail. A failed parallel Git read cancels and joins its siblings. Inspections run one at a time with one trailing rerun, and a result for a directory the Session has since left is dropped. The code host comes from the remotes in order: the upstream's remote, then `origin`, then the rest. When an inspection finds an upstream branch on a remote a provider recognizes, the panel asks `ctx.forgeSession.discoverBranch` to bind that branch's open change requests, once per remote and branch until a refresh. A sign-in probe runs when the recognized host changes and on refresh, within `readinessTimeoutMs`; a refresh settles once the inspection and the probe it started have ended, and poll results arrive later.
 
-Inspection runs `rev-parse --show-toplevel`, `rev-parse --path-format=absolute --git-common-dir`, `rev-parse --path-format=absolute --git-dir`, `symbolic-ref --short HEAD`, `rev-parse --short HEAD`, `rev-parse --abbrev-ref @{upstream}`, and `remote -v`; `branches` runs `symbolic-ref` and `for-each-ref --count=<maxBranches>`. Inspection then sizes the `branch` scope for the local changes card: it finds the fork point, runs `diff --numstat -z -M` against it, and lists untracked files. Every command runs under the Session's read-only sandbox policy with optional index writes, hooks, the filesystem monitor, prompts, and lazy object fetches disabled and the inherited Git selectors and secret-bearing variables removed, within its own `gitTimeoutMs` deadline and `maxOutputBytes` limit per stream. The top-level, Git, and common Git directories Git prints are resolved through `ctx.fs` into the canonical process paths that the working-directory service records; a checkout whose Git directory differs from the common one is a linked worktree. The worktree option is usable under the `danger-full-access` sandbox mode, never under `read-only`, and under `workspace-write` only when both directories lie inside the canonical workspace root of the Session's sandbox policy.
+Inspection runs `rev-parse --show-toplevel`, `rev-parse --path-format=absolute --git-common-dir`, `rev-parse --path-format=absolute --git-dir`, `symbolic-ref --short HEAD`, `rev-parse --short HEAD`, `rev-parse --abbrev-ref @{upstream}`, and `remote -v`; `branches` runs `symbolic-ref` and `for-each-ref --count=<maxBranches>`. Inspection then sizes the `branch` scope for the local changes card: it finds the fork point, runs `diff --numstat -z -M` against it with the same helper and submodule restrictions as `localDiff` below, and lists untracked files. Every command uses the Session's resolved sandbox mode: `read-only` and `workspace-write` require confinement, while `danger-full-access` runs without a sandbox backend. Commands disable optional index writes, hooks, the filesystem monitor, prompts, and lazy object fetches, remove inherited Git selectors and secret-bearing variables, and use their own `gitTimeoutMs` deadline and `maxOutputBytes` limit per stream. The top-level, Git, and common Git directories Git prints are resolved through `ctx.fs` into the canonical process paths that the working-directory service records; a checkout whose Git directory differs from the common one is a linked worktree. The worktree option is usable under the `danger-full-access` sandbox mode, never under `read-only`, and under `workspace-write` only when both directories lie inside the canonical workspace root of the Session's sandbox policy.
 
 A worktree request is a `plugin:client-ui-forge/worktree` record, folded by the `forgeWorktree` projection: requests and withdrawals apply until the first `turn/start` or creation, and the first `created` record of an open request applies until the first `step/start`. The projection also records the Session's directory from its header and each `working-directory/change`; its client view, which the Session summary carries, is the created worktree while that directory is the worktree or lies below it, else null. `requestWorktree` refuses with `forgePanel/session-started` after a turn started or the worktree was created, with `forgePanel/worktrees-unavailable` without a `worktrees` service, and with `forgePanel/invalid-branch` for an empty branch; `cancelWorktree` refuses only with the first and needs no `worktrees` service; both forget a failed attempt. When a message enters the inbox of a Session whose request is open, an `agent/inbox/inserted` listener starts maintenance of the Session's Agent before the delivery wakes it, so the Agent latches the wake and starts the message's turn once that hold ends. The hold makes one attempt with a new branch name, publishing the running stage in the panel state with `held` set and `waiting` as `creation`, and records `created` with the source repository root. After a failed attempt, whose branch, base, failed step, and reason stay in the panel state as `failure`, or after `stopCreation`, the hold waits: `retryWorktree` makes another attempt, refused with `forgePanel/not-waiting` while none waits or one runs, and withdrawing the request lets the message go on in the current checkout. Each message that enters while the Agent is idle and the Session works in its created worktree starts a hold that checks whether the worktree is missing; while it is, the hold waits with `waiting` as `restoration`, and `restoreWorktree` or `continueInProject` runs inside it and then lets the message go on; a check that cannot answer lets the message go at once. The Agent's cancellation and the Remote's stop end a hold, and a message that enters while the Agent runs a turn or other maintenance gets none. The worktree service queues the working-directory notice, which the first step claims. An `agent/pre-step` listener creates the worktree at step 1 of a Session whose request is still open, which covers a message no hold took; it moves the notice into the proposed messages, and a failure ends the turn with the request kept. `restoreWorktree` and `continueInProject` run as maintenance of their own while no message waits; `restoreWorktree` publishes its running step as `restoration`, and clears `missing` in the same state that ends it. The bundle isolates its `worktrees` service, so enabling Git Worktrees as well leaves two independent services. `track` rejects a URL no provider recognizes with `forgePanel/unrecognized-url`. `markReady` and `merge` act only on a visible binding of the Session that a provider serves, else they refuse with `forgePanel/not-bound`; `merge` passes the head commit the card showed, and a moved head refuses with `forgePanel/stale-head`, while any other refusal is `forgePanel/action-failed` with the host's reason.
 
@@ -59,9 +66,9 @@ Restoration records `restoring` before mutation and `restored` only after succes
 
 Each inspection also decides whether the worktree is missing: the Session's directory lies inside the created worktree, `ctx.fs.lstat` finds no directory there, and `show-ref` in the source repository tells whether the branch still exists.
 
-`localDiff` takes the fork point from the created worktree's `baseCommit` when the Session works in it, else, for each remote in the code host order, from `symbolic-ref --quiet --short refs/remotes/<remote>/HEAD` and `merge-base HEAD`; without one the `branch` scope refuses with `forgePanel/no-fork-point`. It runs `diff --no-ext-diff --no-textconv --no-color -M` with fixed `a/` and `b/` prefixes and `core.quotePath=false` against the fork point, against HEAD (the empty tree before the first commit), against the index, or with `--cached` against HEAD. Untracked files, at most `maxUntrackedFiles` with the rest counted as omitted, come from `ls-files --others --exclude-standard -z` and are read through `ctx.fs` as new files, binary when their first 8,000 bytes hold a NUL byte or they are not UTF-8. A patch, file list, or file over `maxDiffBytes` refuses with `forgePanel/diff-too-large`, and a directory outside a checkout with `forgePanel/not-a-checkout`. The Host parses patches with jsdiff into files and hunks, so the browser receives no raw patch. `localText` reads the new side of one file, from the index through `show :<path>` for Staged and through `ctx.fs` otherwise, and refuses a path that leaves the checkout. `changeRequestDiff` and `changeRequestText` act only on a visible binding a provider serves, else they refuse with `forgePanel/not-bound`; they read the head commit of the binding's latest status through the provider's `diff` and `fileText`, refuse a `too-large` failure with `forgePanel/diff-too-large`, and refuse with `forgePanel/diff-failed` before a status was read or when the host refuses otherwise. The Host keeps the patches `changeRequestDiff` read, one per change request at its head commit and base branch, and drops the least recently read once they exceed `maxCachedDiffBytes`; a later read at the same head and base answers from memory for any Session, and a failed read is not kept. The commits the checkout has beyond the head come from `symbolic-ref`, `cat-file -e`, and `rev-list --count`, and are null when the checked-out branch is not the head branch, the head commit is absent, or Git fails.
+`localDiff` takes the fork point from the created worktree's `baseCommit` when the Session works in it, else, for each remote in the code host order, from `symbolic-ref --quiet --short refs/remotes/<remote>/HEAD` and `merge-base HEAD`; without one the `branch` scope refuses with `forgePanel/no-fork-point`. It runs `diff --no-ext-diff --no-textconv --submodule=short --ignore-submodules=dirty --no-color -M` with fixed `a/` and `b/` prefixes and `core.quotePath=false` against the fork point, against HEAD (the empty tree before the first commit), against the index, or with `--cached` against HEAD. Before patches and statistics, Git configuration is read to apply command-local clean/process filter overrides. A failed or truncated configuration read stops the comparison: `localDiff` reports `forgePanel/filter-config-failed`, with a retry after correcting Git configuration or the output limit; failed statistics leave the local changes card hidden. Filter enumeration uses `maxDiffBytes` for patches and `maxOutputBytes` for statistics. Untracked files, at most `maxUntrackedFiles` with the rest counted as omitted, come from `ls-files --others --exclude-standard -z` and are read through `ctx.fs` as new files, binary when their first 8,000 bytes hold a NUL byte or they are not UTF-8. A patch, file list, or file over `maxDiffBytes` refuses with `forgePanel/diff-too-large`, and a directory outside a checkout with `forgePanel/not-a-checkout`. The Host parses patches with jsdiff into files and hunks, so the browser receives no raw patch. `localText` reads the new side of one file, from the index through `show :<path>` for Staged and through `ctx.fs` otherwise, and refuses a path that leaves the checkout. `changeRequestDiff` and `changeRequestText` act only on a visible binding a provider serves, else they refuse with `forgePanel/not-bound`; they read the head commit of the binding's latest status through the provider's `diff` and `fileText`, refuse a `too-large` failure with `forgePanel/diff-too-large`, and refuse with `forgePanel/diff-failed` before a status was read or when the host refuses otherwise. The Host keeps the patches `changeRequestDiff` read, one per change request at its head commit and base branch, and drops the least recently read once they exceed `maxCachedDiffBytes`; a later read at the same head and base answers from memory for any Session, and a failed read is not kept. The commits the checkout has beyond the head come from `symbolic-ref`, `cat-file -e`, and `rev-list --count`, and are null when the checked-out branch is not the head branch, the head commit is absent, or Git fails.
 
-`changeRequestStates` streams, for the Session list, the last known number, title, state, draft flag, checks rollup, review decision, and mergeability of every change request that a listed Session the caller may read binds: a `baseline` frame, then `changed` frames. One run serves every stream. Cancellation is observed before initialization and between frames; the last stream and plugin disposal await initialization and accepted writes. Binding updates received during listing override its initial snapshot. It lists Sessions through `sessionQuery` without loading them, takes the visible bindings of a loaded Session from `ctx.forgeSession` and of another from its cached `forgeChangeRequests` summary, follows binding changes of loaded Sessions, and subscribes to each bound change request through `ctx.forge.watch`; closed requests use the idle polling cadence, and merged requests remain subscribed for explicit refresh. It stores every changed state in the `forge_panel_change_requests` storage domain under the SHA-256 digest of its URL and drops unbound stored states only when every listed Session has known bindings; a failed write is logged and the state stays in memory. The stream fails when the Host lacks the Session query, projection cache, storage, or Session store service.
+`changeRequestStates` streams, for the Session list, the last known number, title, state, draft flag, checks rollup, review decision, and mergeability of every change request that a listed Session the caller may read binds: a `baseline` frame, then `changed` frames. One run serves every stream. Cancellation is observed before initialization and between frames; the last stream and plugin disposal await initialization and accepted writes, then close the run’s storage domain. A later run waits for that closure before reopening the domain and reading its stored states. Binding updates received during listing override its initial snapshot. It lists Sessions through `sessionQuery` without loading them, takes the visible bindings of a loaded Session from `ctx.forgeSession` and of another from its cached `forgeChangeRequests` summary, follows binding changes of loaded Sessions, and subscribes to each bound change request through `ctx.forge.watch`; closed requests use the idle polling cadence, and merged requests remain subscribed for explicit refresh. It stores every changed state in the `forge_panel_change_requests` storage domain under the SHA-256 digest of its URL and drops unbound stored states only when every listed Session has known bindings; a failed write is logged and the state stays in memory. The stream fails when the Host lacks the Session query, projection cache, storage, or Session store service.
 
 The browser entry mounts the Remote, then the UI. One stream per Session feeds the tab, the header button, the New Session option, and the creation card; it opens with the first subscriber, closes with the last, reopens after a transport reset, and keeps the last state while the Session scope is retained. Releasing that scope closes the stream and removes its cached state. The New Session option fills `conversation.hero.options` and the worktree card `conversation.input.dock`. The worktree card shows a running creation, with Cancel calling `stopCreation` while a message waits for it, or the failed or stopped attempt a message waits after, with Retry calling `retryWorktree` and Continue without a worktree calling `cancelWorktree`. The tab shortens paths with the Host home from the Remote's Host facts, read again after each transport reset. The tab reports its visibility to the header button's pressed state. The header button collapses a docked tab or closes its floating tab. The toast lives in a `shell.overlay` entry so it outlives the tab. One stream of change request states feeds the Session row icons in `sidebar.session.row.trailing` and the hover card section in `sidebar.session.row.hover` while any of them is mounted; both take a Session's worktree and bindings from its Session list summary values. The change request card takes a change request, its snapshot, and optional actions, so another surface can reuse it. The changes view is the `forge-changes` resource tab type: its addresses, `dsh-resource://forge-changes/<session>/local` and `dsh-resource://forge-changes/<session>/change/<url>`, name the source, and a navigation may name a file to scroll to. The tab type enables `keepMounted`, retaining visited bodies and their owning Session references until their tab records end. Its keyed panel hook subscribes only for the visible body; other panel surfaces may keep the shared Session stream open. Its body keeps the scope and layout choices of each tab in a slot store, reads through the Remote, and highlights lines with the shared code highlighter; a chip title shows its name with the changes icon.
 
@@ -71,7 +78,7 @@ The browser entry mounts the Remote, then the UI. One stream per Session feeds t
 | [`src/panel.ts`](src/panel.ts) | Panel state, inspection scheduling, and sign-in probes |
 | [`src/worktree.ts`](src/worktree.ts) | Worktree record, projection, waiting messages, and creation at the first step |
 | [`src/states.ts`](src/states.ts) | Change request states for the Session list |
-| [`src/git.ts`](src/git.ts) | Confined read-only Git commands |
+| [`src/git.ts`](src/git.ts) | Git queries under Session permissions |
 | [`src/parse.ts`](src/parse.ts) | Git output parsing and remote order |
 | [`src/diff.ts`](src/diff.ts) | Patch parsing, untracked files as additions, and numstat records |
 | [`src/local-diff.ts`](src/local-diff.ts) | Fork point, local scopes, new-side text, and the `branch` scope summary |
@@ -102,16 +109,17 @@ The browser entry mounts the Remote, then the UI. One stream per Session feeds t
 <a id="model-experience"></a>
 ## Model Experience
 
-Indirectly, through the working-directory service and the Session's conversation: the notice about a Session's new worktree joins the first request's messages, Continue in the project queues the same kind of notice for the next request, and Create change request sends a user message that asks the Agent for a change request. Inspection, status, diffs, restoring, the Session list, and the rest of the panel add nothing to model requests.
+Indirectly, through the working-directory service and the Session's conversation: the notice about a Session's new worktree joins the first request's messages, Continue in the project queues the same kind of notice for the next request, and Create change request sends a user message that asks the Agent for a change request. Add to input contributes a frozen `## User Comment N` quote containing File, Side, Lines, Source, the diff hunk, and Comment; PR quotes also name the reviewed commit. These quotes enter the normal logged user message only when the composer is sent. Inspection, status, restoring, the Session list, and GitHub review submission add no model context.
 
 #### KV Cache effect
 
-None for a new worktree, as its notice belongs to the first request of the Session, before any cached prefix exists. A notice after Continue in the project and the message Create change request sends are appended after the cached prefix.
+None for a new worktree, as its notice belongs to the first request of the Session, before any cached prefix exists. A notice after Continue in the project and the message Create change request sends, and submitted review quotes are appended after the cached prefix.
 
 ## Known Limitations and Deferred Work
 
 <a id="known-limitations-and-deferred-work"></a>
 
+- **Filtered files and submodules** — local diffs bypass clean/process filters; Git's built-in newline, ident, and encoding conversions still apply. Materialized LFS files and other filtered files can appear changed even when ordinary Git considers them clean; pointer-only checkouts compare normally. The panel does not request LFS downloads. Filter overrides rely on Git 2.31 or newer; older Git can ignore them and run helpers under Session permissions. Drivers added between enumeration and diff are not covered by the overrides. Submodule commit changes remain visible; internal uncommitted changes are omitted.
 - **Polling while shown** — status is polled only while a Session list row or an active panel surface for the Session subscribes; retained hidden changes bodies do not subscribe; there are no notifications for checks that finish meanwhile.
 - **Unopened Sessions in the list** — the Session list reads the worktree and bindings of a Session that is not loaded from its cached summary: a Session without one shows neither, and one last used before this version shows its worktree only after it is opened.
 - **Inspection triggers** — the checkout is inspected after Session tool results and directory changes; a change made outside the Session appears after Refresh or the next tool result.
diff --git a/packages/experimental/client-ui-forge/README.zh.md b/packages/experimental/client-ui-forge/README.zh.md
index 1ff38bba3c..fc6f9365a3 100644
--- a/packages/experimental/client-ui-forge/README.zh.md
+++ b/packages/experimental/client-ui-forge/README.zh.md
@@ -9,7 +9,7 @@ kind: "package-reference"
 
 ## 概述
 
-这个可选的双端包展示 Session 创建或推送的变更请求及其变更，并让新 Session 在自己的 Git worktree 中开始。宿主端是 `forgePanel` Remote：它以只读方式检查 Session 的检出，检查代码托管平台的登录状态，为单个 Session 或会话列表以流的形式推送[已绑定变更请求](../forge-session/README.zh.md)及其轮询状态，读取 diff，并在第一条消息于 Session 的收件箱中等待时创建所请求的 worktree。客户端增加一个侧边栏标签页、一个变更视图、标题栏中的入口、一个新会话选项、一张创建卡片、会话列表中的图标，以及 toast 提示。
+这个可选包展示 Session 创建或推送的变更请求及其变更，并让新 Session 在自己的 Git worktree 中开始。宿主端的 `forgePanel` Remote 使用 Session 的权限检查检出，检查代码托管平台的登录状态，为单个 Session 或会话列表以流的形式推送[已绑定变更请求](../forge-session/README.zh.md)及其轮询状态，读取 diff，并在第一条消息于 Session 的收件箱中等待时创建所请求的 worktree。客户端增加一个侧边栏标签页、一个变更视图、标题栏中的入口、一个新会话选项、一张创建卡片、会话列表中的图标，以及 toast 提示。
 
 ## 目录
 
@@ -29,17 +29,24 @@ kind: "package-reference"
 
 面板文案跟随应用语言，支持中文、英文、日语、西班牙语、法语、德语、俄语和葡萄牙语。
 
-- **工作树选项**——在新会话页面上，“工作树”位于工作区与模式选择器那一行的右端。勾选后显示基准分支，默认为当前分支；菜单列出最近的本地分支。不在 Git 检出中、Session 为只读，或检出及其 Git 目录不在 Session 的可写根内（例如项目本身就是链接 worktree）时，该选项不可用，提示中说明原因。发送第一条消息后，消息立即交给 Session 并在那里等待，同时从基准分支在仓库的 `.agents/worktrees/` 下创建分支 `dsh-<Session id 前 8 位十六进制数>-<4 位随机十六进制数>`，并把它的检出设为 Session 的工作目录；worktree 建好后这条消息的这一轮才开始。
+- **工作树选项**——在新会话页面上，“新建工作树”与当前分支一起位于工作区与模式选择器那一行的右端。不在 Git 检出中时，两者均隐藏。分支默认为只读展示；勾选“新建工作树”后，它变为基准分支选择器，菜单列出最近的本地分支。权限阻止已有请求时，仍只读显示已选基准，并允许取消请求。悬停、聚焦或轻点只读分支或基准会显示完整说明。Session 为只读，或检出及其 Git 目录不在 Session 的可写根内（例如项目本身就是链接 worktree）时，该选项不可用，提示中说明原因。发送第一条消息后，消息立即交给 Session 并在那里等待，同时从基准分支在仓库的 `.agents/worktrees/` 下创建分支 `dsh-<Session id 前 8 位十六进制数>-<4 位随机十六进制数>`，并把它的检出设为 Session 的工作目录；worktree 建好后这条消息的这一轮才开始。
 - **创建卡片**——创建 worktree 期间，输入框上方的卡片显示新分支以及“创建分支”“检出文件”两个步骤；“更多详情”会列出分支与基准。“取消”停止这次尝试。尝试被停止或失败后，消息继续等待，失败时卡片显示原因：“重试”换一个新分支名再试；“不使用工作树”撤回请求，消息在当前检出中继续发送。
 - **工作树已被删除**——Session 所在的 worktree 在 Session 之外被删除后，输入框上方的卡片会说明这一点；此期间发送的消息会等待、不开始这一轮，直到该 worktree 被恢复或离开，卡片也会说明消息之后会接着发送。“恢复工作树”（标签页中的“恢复”与之相同）在原目录重新检出该分支；分支也已删除时，从它开始时的提交重新创建分支；恢复期间卡片显示“准备工作树”“检出文件”两个步骤，标签页中的“恢复”变为加载状态。“在项目目录继续”把 Session 移回源检出。此期间标签页顶部一行显示警示图标。
+- **代码审查和变更**——右侧栏起始页中的入口，与会话标题栏按钮打开同一个变更请求标签页。
 - **标题栏按钮**——Session 有已绑定的变更请求、或其目录位于 Git 检出中时出现，用来显示或隐藏标签页。打开状态的变更请求存在检查失败、被要求修改或冲突时，按钮带红点。
 - **会话列表**——Session 在面板为它创建的 worktree 中工作时，会话行的时间之后显示分支图标；另有一个图标显示它最需要关注的变更请求的状态，依次为需要处理、打开、草稿、尚未轮询、已合并、已关闭。打开中的变更请求图标保持会话行的浅色，并用圆点标出检查进行中、已通过或失败；已合并与已关闭的保留各自的状态颜色。会话行的悬浮卡片写出 worktree 分支及其起点，再列出最多三个变更请求的编号、标题、状态与检查，并说明还有多少个。重启后，下次轮询之前显示重启前已知的状态。
-- **标签页**——顶部一行显示当前检出的分支（分离 HEAD 时为缩写提交），项目目录前显示目录图标、worktree 前显示分支图标，并说明检出的类型（Session 创建的 worktree 及其基准、其他 worktree 或项目目录）；它的提示给出路径，宿主主目录缩写为 `~`，旁边的按钮复制完整路径；worktree 已被删除时提供“恢复”。其下每张变更请求卡片显示状态图标、标题（点击在浏览器中打开）与编号；图标区分打开、草稿、已合并与已关闭，打开中的变更请求（草稿除外）检查失败、被要求修改或有冲突时显示为“需要处理”，与标题栏按钮的红点一致。卡片右上角还提供“在浏览器中打开”“复制变更请求链接”与“从本会话移除”，移除后的 toast 提供“撤销”。折叠的卡片还显示打开的变更请求的检查，以及被要求修改、冲突、草稿中最需要注意的一项；已合并或已关闭的则显示结束时间。展开的卡片显示源分支与目标分支，下面每项一行：打开的变更请求依次是检查（点击该行弹出检查列表，失败的排在前面，带耗时与链接）、评审结论与未解决讨论数、合并状态，已合并或已关闭的显示结束时间；最后是按所选界面语言格式化的变更行数，点击该行打开变更视图。打开中的草稿还提供“标记为可评审”；主机现在就会合并的变更请求提供“合并”，其菜单列出仓库允许的合并方式并选中用户常用的一种，打开时固定卡片显示的 head。“确认合并”使用这个 head；轮询发现 head 变化后禁用确认，需重新检查并打开菜单。每次操作的结果都以 toast 报告；该 head 之后有新提交时不会合并。恰好有一个已绑定的变更请求处于打开状态时，它的卡片默认展开。刷新会重新检查检出与登录状态，并立即再次轮询每个变更请求；检查与登录状态确认结束前，刷新图标持续旋转。缺少登录时，横幅显示 `gh auth login` 命令。
-- **变更卡片**——`branch` 范围有文件变更、且没有以当前检出分支为源分支的打开中变更请求时，变更请求列表上方的卡片显示比较的基准（例如 `HEAD → origin/main`）以及新增、删除行数与文件数，点击打开变更视图；展开的文件列表像变更视图一样标出各个文件，点击某个文件时，变更视图定位到该文件。识别出代码托管仓库后，卡片提供“创建变更请求”：它以界面语言向 Session 发送一条用户消息，请 Agent 为这些变更创建变更请求，并以 toast 报告是否已发送。
-- **变更视图**——展开的变更请求卡片上的“变更”一行与变更卡片会打开一个右侧边栏标签页，列出所有变更的文件。本地变更默认显示“分支”：工作树与未跟踪文件相对于分叉点的变更；分叉点是 Session 创建的 worktree 的基准提交，否则是 HEAD 与代码托管远端默认分支的合并基准。“未提交”与 HEAD 比较，“未暂存”与暂存区比较，“已暂存”比较暂存区与 HEAD。变更请求的视图显示托管平台在其 head 处的 diff；当前检出分支就是该变更请求的源分支时，还会说明本地分支比该 head 多出几个提交。工具栏可以跳到某个文件、汇总变更行数、刷新，并在左右对比与单栏对比、自动换行与截断长行之间切换。访问过的变更标签页会在切换标签页与 Session、隐藏侧边栏及调整停靠位置时保持挂载，在 diff 未改变时保留文件折叠、大文件展开、上下文展开、布局与滚动位置。隐藏的变更视图释放面板订阅并推迟 diff 读取；返回时仅在最新 head 或本地摘要不同时重新读取。刷新替换 diff 后会丢弃展开的上下文，内容变化也可能移动阅读位置。视图隐藏时关闭临时菜单。关闭标签页或重新加载应用后不保留这些进度。文件名在前，目录在后，用更小的浅色字显示，空间不够时目录先缩短；悬停时显示完整路径，重命名的文件显示新旧两条路径。两种 diff 来源中，点击文件名或目录都会复制仓库相对路径，并通过 toast 报告成功或失败。每个文件带有新文件、已删除、重命名的标记（重命名标记写出原文件名，只换了目录时写出原路径），“分支”范围下的未跟踪文件还标“未提交”；文件菜单可以复制路径，本地变更可在侧边栏打开整个文件，变更请求可在浏览器中查看该文件在 head 处的页面。hunk 之间未变更的行折叠成一行，点击后从文件的新版本展开：工作树、“已暂存”时为暂存区，或经托管平台读取的 head 提交；读取 diff 之后文件又有修改时不会展开，直到视图重新读取。二进制文件与超过 `maxDiffBytes` 的未跟踪文件只显示一条说明；hunk 超过 1,000 行的文件先显示为一条写出变更行数的折叠条，点击后才绘制；前面的文件累计变更超过 5,000 行后，其后的文件默认收起。刷新与页面刷新快捷键、每次导航、变更请求的 head 变化，以及“分支”范围的摘要变化时，视图都会重新读取；变更请求的视图会先等到给出 head 的状态再读取，除非没有提供方服务它或那次轮询失败。重新读取已显示的变更时，刷新图标会旋转。托管平台或其提供方因超过大小上限拒绝给出 diff 的变更请求（例如 GitHub 上超过 300 个文件的 diff）显示“变更太大，无法在这里显示”并提供“在浏览器中查看”；其他读取失败提供“重试”，变更请求还提供“在浏览器中查看”。变更请求的 diff 在缓存期间对每个 head 提交与目标分支只下载一次，因此在同一 head 下重新打开、刷新与导航都不会再从托管平台读取。
+- **标签页**——顶部一行显示当前检出的分支（分离 HEAD 时为缩写提交），项目目录前显示目录图标、worktree 前显示分支图标，并说明检出的类型（Session 创建的 worktree 及其基准、其他 worktree 或项目目录）；它的提示给出路径，宿主主目录缩写为 `~`，旁边的按钮复制完整路径；worktree 已被删除时提供“恢复”。其下每张变更请求卡片显示状态图标、标题（点击在浏览器中打开）与编号；图标区分打开、草稿、已合并与已关闭，打开中的变更请求（草稿除外）检查失败、被要求修改或有冲突时显示为“需要处理”，与标题栏按钮的红点一致。卡片右上角还提供“在浏览器中打开”“复制变更请求链接”与“从本会话移除”，移除后的 toast 提供“撤销”。已取消的检查单独计数；列出的检查没有失败项时，折叠卡片显示取消数量。折叠的卡片还显示打开的变更请求的检查，以及被要求修改、冲突、草稿中最需要注意的一项；已合并或已关闭的则显示结束时间。展开的卡片显示源分支与目标分支，下面每项一行：打开的变更请求依次是检查（点击该行弹出检查列表，失败的排在前面，带耗时与链接）、评审结论与未解决讨论数、合并状态，已合并或已关闭的显示结束时间；最后是按所选界面语言格式化的变更行数，点击该行打开变更视图。打开中的草稿还提供“标记为可评审”；主机现在就会合并的变更请求提供“合并”，其菜单列出仓库允许的合并方式并选中用户常用的一种，打开时固定卡片显示的 head。“确认合并”使用这个 head；轮询发现 head 变化后禁用确认，需重新检查并打开菜单。每次操作的结果都以 toast 报告；该 head 之后有新提交时不会合并。恰好有一个已绑定的变更请求处于打开状态时，它的卡片默认展开。刷新会重新检查检出与登录状态，并立即再次轮询每个变更请求；检查与登录状态确认结束前，刷新图标持续旋转。缺少登录时，横幅显示 `gh auth login` 命令。
+- **本地变更卡片**——`branch` 范围有文件变更、且没有以当前检出分支为源分支的打开中变更请求时，变更请求列表上方的卡片显示比较的基准（例如 `HEAD → origin/main`）以及新增、删除行数与文件数，点击打开变更视图；展开的文件列表像变更视图一样标出各个文件，点击某个文件时，变更视图定位到该文件。识别出代码托管仓库后，卡片提供“创建变更请求”：它以界面语言向 Session 发送一条用户消息，请 Agent 为这些变更创建变更请求，并以 toast 报告是否已发送。
+- **变更视图**——展开的变更请求卡片上的“变更”一行与本地变更卡片会打开一个右侧边栏标签页，列出所有变更的文件。本地标签页名为“本地变更”，默认显示“分支”：工作树与未跟踪文件相对于分叉点的变更；分叉点是 Session 创建的 worktree 的基准提交，否则是 HEAD 与代码托管远端默认分支的合并基准。“未提交”与 HEAD 比较，“未暂存”与暂存区比较，“已暂存”比较暂存区与 HEAD。变更请求的视图显示托管平台在其 head 处的 diff；当前检出分支就是该变更请求的源分支时，还会说明本地分支比该 head 多出几个提交。工具栏可以跳到某个文件、汇总变更行数、刷新，并在左右对比与单栏对比、自动换行与截断长行之间切换。访问过的变更标签页会在切换标签页与 Session、隐藏侧边栏及调整停靠位置时保持挂载，在 diff 未改变时保留文件折叠、大文件展开、上下文展开、布局与滚动位置。隐藏的变更视图释放面板订阅并推迟 diff 读取；返回时仅在最新 head 或本地摘要不同时重新读取。刷新替换 diff 后会丢弃展开的上下文，内容变化也可能移动阅读位置。视图隐藏时关闭临时菜单。关闭标签页或重新加载应用后不保留这些进度。文件名在前，目录在后，用更小的浅色字显示，空间不够时目录先缩短；悬停时显示完整路径，重命名的文件显示新旧两条路径。每个文件带有新文件、已删除、重命名的标记（重命名标记写出原文件名，只换了目录时写出原路径），“分支”范围下的未跟踪文件还标“未提交”；文件菜单可以复制路径，本地变更可在侧边栏打开整个文件，变更请求可在浏览器中查看该文件在 head 处的页面。hunk 之间未变更的行折叠成一行，点击后从文件的新版本展开：工作树、“已暂存”时为暂存区，或经托管平台读取的 head 提交；读取 diff 之后文件又有修改时不会展开，直到视图重新读取。二进制文件与超过 `maxDiffBytes` 的未跟踪文件只显示一条说明；hunk 超过 1,000 行的文件先显示为一条写出变更行数的折叠条，点击后才绘制；前面的文件累计变更超过 5,000 行后，其后的文件默认收起。刷新与页面刷新快捷键、每次导航、变更请求的 head 变化，以及“分支”范围的摘要变化时，视图都会重新读取；变更请求的视图会先等到给出 head 的状态再读取，除非没有提供方服务它或那次轮询失败。重新读取已显示的变更时，刷新图标会旋转。托管平台或其提供方因超过大小上限拒绝给出 diff 的变更请求（例如 GitHub 上超过 300 个文件的 diff）显示“变更太大，无法在这里显示”并提供“在浏览器中查看”；其他读取失败提供“重试”，变更请求还提供“在浏览器中查看”。变更请求的 diff 在缓存期间对每个 head 提交与目标分支只下载一次，因此在同一 head 下重新打开、刷新与导航都不会再从托管平台读取。
+
+检查行先显示轮询预览。不完整时，卡片使用托管平台的总体状态而不显示失败总数，并注明已加载的检查数量尚不完整。打开列表后，经 `changeRequestChecks` 单独读取该 PR 的后续页，时限独立于轮询。读取失败时保留预览并提供重试。关闭列表、head 变化或组件卸载会取消读取，忽略迟到结果；重新打开会读取当前详情。Remote 要求 URL 是该 Session 可见的绑定，并拒绝 head 提交不一致的响应。
+
+点击 diff 内容区可将焦点移入。左右方向键按 diff 顺序跳到上一个、下一个文件并展开它；到达首尾时停留。上下方向键保留原有滚动行为。手动滚动后，文件跳转从视口顶部的文件继续。文本编辑、非折叠文本选区、组合键、菜单与文件树控件保留各自的键盘行为。
 
 `gitCommand`、`gitTimeoutMs`、`graceMs`、`maxOutputBytes`、`readinessTimeoutMs`、`maxBranches`、`worktreePrefix`、`maxDiffBytes`、`maxUntrackedFiles` 与 `maxCachedDiffBytes` 列在[配置目录](../../../docs/config-catalog.zh.md#deepseek-aidsh-experimental-client-ui-forge)中。
 
+“全部文件”打开可搜索的目录树；只有一个子目录的路径会合并显示，重命名文件也可以按旧路径搜索。较宽的变更面板会在 diff 旁显示同一棵树，工具栏的“文件树”按钮按“左侧 → 右侧 → 隐藏”循环切换，默认显示在左侧。按钮的无障碍名称说明下一步操作，移动或隐藏文件树时焦点仍留在按钮上。移动或隐藏文件树，以及切换标签页与 Session 时保留搜索、折叠状态、选中文件和宽度。拖动分隔线，或聚焦分隔线后使用方向键，可以调整文件树宽度。文件与文件夹预留相同的展开箭头列，子项相对父目录向内缩进。本地变更与每个 PR 保留独立标签页。划选代码文字或通过行号选择同一已显示 hunk、同一侧的连续行，文字划选与复制都限定在起始侧。点击“＋”才打开纯文本评论框。评论框支持换行和输入法组合输入，只有点击操作按钮才提交。可拖动底边调整高度。“添加到输入框”将评论作为可移除的引用加入主输入框，多条引用只会在用户发送主输入框时一起发送。GitHub 分段按钮用于开始或加入待提交评审，下拉菜单可以立即发布单条评论。评论在引用、暂存或发布后保留在对应代码旁，暂存评论可在那里编辑或删除。“请求更改”需要填写评审总结，弹窗在总结输入框旁说明此要求，并在切换评审决定时播报。PR 标题栏中的“提交评审”打开居中弹窗，只显示待提交数量、总结以及“评论”“批准”“请求更改”选项。新建和删除文件只显示有内容的一侧行号。待提交评审与评论记录按 Session 和页签保存在当前浏览器，包括最初评审的 head。切换 Session 或隐藏面板时保留；关闭页签会清空该页签的评论、总结与评审决定，重新打开从空评审开始。已发布到 GitHub 的评论与已加入主输入框的引用不受影响。head 变化后需要重新选择评论行。代码变化后的记录保留在文件末尾；文件已不在 diff 中时，记录显示在 diff 之后。页签保持打开时，结果不明的提交在重新加载后仍会阻止重复发送，直到用户检查 GitHub 并明确允许再次提交。
+
 -----
 
 <a id="understand-the-implementation"></a>
@@ -50,7 +57,7 @@ kind: "package-reference"
 
 `ForgePanelController` 为每个被关注的 Session 保留一个 `SessionPanel`，最后一个关注方离开时销毁它。面板从 Session 的工作目录与绑定开始，在每个 `working-directory/change`、`tool/result` 与 `sandbox/mode` 事件之后重新检查，每次变化都发布新的 `ForgePanelState`。每个变更请求在后续轮询失败时保留最近一次轮询得到的快照。并行 Git 读取失败时会取消并等待同批读取结束。检查一次只运行一个，最多再追加一次；Session 已离开的目录的结果会被丢弃。代码托管平台按远端顺序识别：先是上游所在的远端，然后是 `origin`，最后是其余远端。检查发现提供方识别的远端上有上游分支时，面板调用 `ctx.forgeSession.discoverBranch` 绑定该分支打开状态的变更请求；同一远端与分支在刷新前只查找一次。识别出的托管平台变化时以及刷新时，会在 `readinessTimeoutMs` 内检查登录状态；一次刷新在它触发的检查与登录状态检查结束后完成，轮询结果之后才到达。
 
-检查运行 `rev-parse --show-toplevel`、`rev-parse --path-format=absolute --git-common-dir`、`rev-parse --path-format=absolute --git-dir`、`symbolic-ref --short HEAD`、`rev-parse --short HEAD`、`rev-parse --abbrev-ref @{upstream}` 与 `remote -v`；`branches` 运行 `symbolic-ref` 与 `for-each-ref --count=<maxBranches>`。之后，检查会为变更卡片统计 `branch` 范围的规模：找出分叉点，对它运行 `diff --numstat -z -M`，并列出未跟踪文件。每个命令都在 Session 的只读沙箱策略下运行，禁用可选的索引写入、钩子、文件系统监视器、提示与对象的延迟获取，移除继承的 Git 选择器与携带密钥的变量，并各自受 `gitTimeoutMs` 时限与每个输出流的 `maxOutputBytes` 上限约束。Git 打印的顶层目录、Git 目录与公共 Git 目录经 `ctx.fs` 解析为工作目录服务记录的规范进程路径；Git 目录与公共 Git 目录不同的检出是链接 worktree。工作树选项在 `danger-full-access` 沙箱模式下可用，在 `read-only` 下不可用，在 `workspace-write` 下只有两个目录都位于 Session 沙箱策略的规范工作区根内时才可用。
+检查运行 `rev-parse --show-toplevel`、`rev-parse --path-format=absolute --git-common-dir`、`rev-parse --path-format=absolute --git-dir`、`symbolic-ref --short HEAD`、`rev-parse --short HEAD`、`rev-parse --abbrev-ref @{upstream}` 与 `remote -v`；`branches` 运行 `symbolic-ref` 与 `for-each-ref --count=<maxBranches>`。之后，检查会为本地变更卡片统计 `branch` 范围的规模：找出分叉点，对它运行 `diff --numstat -z -M`，采用与下文 `localDiff` 相同的辅助程序和子模块限制，并列出未跟踪文件。每个命令都使用 Session 解析出的沙箱模式：`read-only` 与 `workspace-write` 需要沙箱，`danger-full-access` 无需沙箱后端。命令禁用可选的索引写入、钩子、文件系统监视器、提示与对象的延迟获取，移除继承的 Git 选择器与携带密钥的变量，并各自受 `gitTimeoutMs` 时限与每个输出流的 `maxOutputBytes` 上限约束。Git 打印的顶层目录、Git 目录与公共 Git 目录经 `ctx.fs` 解析为工作目录服务记录的规范进程路径；Git 目录与公共 Git 目录不同的检出是链接 worktree。工作树选项在 `danger-full-access` 沙箱模式下可用，在 `read-only` 下不可用，在 `workspace-write` 下只有两个目录都位于 Session 沙箱策略的规范工作区根内时才可用。
 
 worktree 请求是一条 `plugin:client-ui-forge/worktree` 记录，由 `forgeWorktree` 投影折叠：请求与撤回在第一个 `turn/start` 或创建之前生效；在第一个 `step/start` 之前，未完成请求的第一条 `created` 记录生效。该投影还从 Session 头部与每个 `working-directory/change` 记录 Session 的目录；它的客户端视图随 Session 摘要下发，在该目录就是所创建的 worktree 或位于其下时为该 worktree，否则为 null。一轮开始或 worktree 已创建之后，`requestWorktree` 以 `forgePanel/session-started` 拒绝；没有 `worktrees` 服务时以 `forgePanel/worktrees-unavailable` 拒绝；分支名为空时以 `forgePanel/invalid-branch` 拒绝；`cancelWorktree` 只以第一种拒绝，也不需要 `worktrees` 服务；两者都会忘掉失败的尝试。消息进入有未完成请求的 Session 的收件箱时，一个 `agent/inbox/inserted` 监听器在这次投递唤醒 Agent 之前启动 Session 所属 Agent 的维护任务，因此 Agent 会暂存唤醒，等这次暂留结束后才开始这条消息的这一轮。暂留使用新分支名进行一次尝试，在面板状态中发布正在进行的阶段，设置 `held`，`waiting` 为 `creation`，并记录带源仓库根目录的 `created`。尝试失败（其分支、基准、失败步骤与原因以 `failure` 留在面板状态中）或经 `stopCreation` 停止后，暂留继续等待：`retryWorktree` 再做一次尝试，没有消息等待或已有尝试进行时以 `forgePanel/not-waiting` 拒绝；撤回请求则让消息在当前检出中继续。Agent 空闲且 Session 在所创建 worktree 中工作时，进入的每条消息都会启动一次暂留，检查该 worktree 是否缺失；缺失期间暂留以 `waiting` 为 `restoration` 等待，`restoreWorktree` 或 `continueInProject` 在暂留内运行，之后放行消息；检查无法给出结果时立即放行。Agent 的取消与 Remote 的停止都会结束暂留；Agent 正在运行一轮或其他维护任务时进入的消息不会被暂留。worktree 服务把工作目录通知排进队列，由第一步认领。一个 `agent/pre-step` 监听器在请求仍未完成的 Session 的第 1 步创建 worktree，覆盖没有被暂留的消息；它把通知移入本步提议的消息，失败时这一轮结束、请求保留。没有消息等待时，`restoreWorktree` 与 `continueInProject` 以各自的维护任务运行；`restoreWorktree` 以 `restoration` 发布正在进行的步骤，并在结束恢复的同一状态中清除 `missing`。套件把它的 `worktrees` 服务隔离，因此同时启用 Git Worktrees 时会有两个互不影响的服务。`track` 以 `forgePanel/unrecognized-url` 拒绝没有提供方识别的 URL。`markReady` 与 `merge` 只作用于该 Session 中由提供方服务的可见绑定，否则以 `forgePanel/not-bound` 拒绝；`merge` 带上卡片显示的 head 提交，head 已变化时以 `forgePanel/stale-head` 拒绝，其他拒绝都是带主机原因的 `forgePanel/action-failed`。
 
@@ -59,9 +66,9 @@ worktree 请求是一条 `plugin:client-ui-forge/worktree` 记录，由 `forgeWo
 
 每次检查还会判断 worktree 是否缺失：Session 的目录位于所创建的 worktree 内，`ctx.fs.lstat` 在那里找不到目录，再由源仓库中的 `show-ref` 判断分支是否还在。
 
-Session 在所创建的 worktree 中工作时，`localDiff` 以它的 `baseCommit` 为分叉点；否则按代码托管远端的顺序，对每个远端依次运行 `symbolic-ref --quiet --short refs/remotes/<remote>/HEAD` 与 `merge-base HEAD` 找出分叉点；找不到时 `branch` 范围以 `forgePanel/no-fork-point` 拒绝。它以固定的 `a/`、`b/` 前缀和 `core.quotePath=false` 运行 `diff --no-ext-diff --no-textconv --no-color -M`，分别与分叉点、HEAD（第一次提交之前为空树）、暂存区比较，或带 `--cached` 与 HEAD 比较。未跟踪文件由 `ls-files --others --exclude-standard -z` 列出，最多 `maxUntrackedFiles` 个，其余计为未列出；它们经 `ctx.fs` 读取并作为新文件加入，前 8,000 字节含 NUL 字节或不是 UTF-8 时视为二进制。补丁、文件列表或文件超过 `maxDiffBytes` 时以 `forgePanel/diff-too-large` 拒绝，目录不在检出中时以 `forgePanel/not-a-checkout` 拒绝。宿主用 jsdiff 把补丁解析为文件与 hunk，浏览器不会收到原始补丁。`localText` 读取一个文件的新版本：“已暂存”经 `show :<path>` 从暂存区读取，其余经 `ctx.fs` 读取；离开检出的路径会被拒绝。`changeRequestDiff` 与 `changeRequestText` 只作用于该 Session 中由提供方服务的可见绑定，否则以 `forgePanel/not-bound` 拒绝；它们经提供方的 `diff` 与 `fileText` 读取绑定最新状态中的 head 提交，`too-large` 失败以 `forgePanel/diff-too-large` 拒绝，尚未读到状态或托管平台以其他原因拒绝时以 `forgePanel/diff-failed` 拒绝。Host 保留 `changeRequestDiff` 读到的补丁，每个变更请求一份，按 head 提交与目标分支区分，总量超过 `maxCachedDiffBytes` 时丢弃最久未读的；之后在同一 head 与目标分支下的读取不论来自哪个 Session 都从内存返回，读取失败的结果不保留。本地分支比 head 多出的提交数由 `symbolic-ref`、`cat-file -e` 与 `rev-list --count` 得出；当前检出分支不是源分支、本地没有 head 提交或 Git 失败时为 null。
+Session 在所创建的 worktree 中工作时，`localDiff` 以它的 `baseCommit` 为分叉点；否则按代码托管远端的顺序，对每个远端依次运行 `symbolic-ref --quiet --short refs/remotes/<remote>/HEAD` 与 `merge-base HEAD` 找出分叉点；找不到时 `branch` 范围以 `forgePanel/no-fork-point` 拒绝。它以固定的 `a/`、`b/` 前缀和 `core.quotePath=false` 运行 `diff --no-ext-diff --no-textconv --submodule=short --ignore-submodules=dirty --no-color -M`，分别与分叉点、HEAD（第一次提交之前为空树）、暂存区比较，或带 `--cached` 与 HEAD 比较。读取补丁与统计前会查询 Git 配置，应用命令级 clean/process filter 覆盖。配置读取失败或被截断时停止比较：`localDiff` 报告 `forgePanel/filter-config-failed`，修正 Git 配置或读取上限后可重试；统计失败时本地变更卡片保持隐藏。过滤器枚举在读取补丁时使用 `maxDiffBytes` 上限，统计时使用 `maxOutputBytes` 上限。未跟踪文件由 `ls-files --others --exclude-standard -z` 列出，最多 `maxUntrackedFiles` 个，其余计为未列出；它们经 `ctx.fs` 读取并作为新文件加入，前 8,000 字节含 NUL 字节或不是 UTF-8 时视为二进制。补丁、文件列表或文件超过 `maxDiffBytes` 时以 `forgePanel/diff-too-large` 拒绝，目录不在检出中时以 `forgePanel/not-a-checkout` 拒绝。宿主用 jsdiff 把补丁解析为文件与 hunk，浏览器不会收到原始补丁。`localText` 读取一个文件的新版本：“已暂存”经 `show :<path>` 从暂存区读取，其余经 `ctx.fs` 读取；离开检出的路径会被拒绝。`changeRequestDiff` 与 `changeRequestText` 只作用于该 Session 中由提供方服务的可见绑定，否则以 `forgePanel/not-bound` 拒绝；它们经提供方的 `diff` 与 `fileText` 读取绑定最新状态中的 head 提交，`too-large` 失败以 `forgePanel/diff-too-large` 拒绝，尚未读到状态或托管平台以其他原因拒绝时以 `forgePanel/diff-failed` 拒绝。Host 保留 `changeRequestDiff` 读到的补丁，每个变更请求一份，按 head 提交与目标分支区分，总量超过 `maxCachedDiffBytes` 时丢弃最久未读的；之后在同一 head 与目标分支下的读取不论来自哪个 Session 都从内存返回，读取失败的结果不保留。本地分支比 head 多出的提交数由 `symbolic-ref`、`cat-file -e` 与 `rev-list --count` 得出；当前检出分支不是源分支、本地没有 head 提交或 Git 失败时为 null。
 
-`changeRequestStates` 为会话列表推送调用方可读的、已列出的 Session 所绑定的每个变更请求的最近编号、标题、状态、草稿标记、检查汇总、评审结论与可合并性：先是一个 `baseline` 帧，之后是 `changed` 帧。所有流共用一次运行。初始化之前和帧之间均响应取消；最后一条流结束及插件卸载会等待初始化与已接受的写入完成。列举期间收到的绑定更新优先于初始快照。它经 `sessionQuery` 列出 Session 而不加载它们，已加载 Session 的可见绑定取自 `ctx.forgeSession`，其他 Session 的取自缓存的 `forgeChangeRequests` 摘要；它跟随已加载 Session 的绑定变化，并经 `ctx.forge.watch` 订阅每个已绑定的变更请求；已关闭的按空闲间隔轮询，已合并的保留订阅以接收显式刷新结果。每个变化了的状态以其 URL 的 SHA-256 摘要为键存入 `forge_panel_change_requests` 存储域，仅在所有已列出 Session 的绑定均已知时删除无人绑定的已存状态；写入失败时记录日志，状态仍保留在内存中。宿主缺少 Session 查询、投影缓存、存储或 Session 存储服务时，流以失败结束。
+`changeRequestStates` 为会话列表推送调用方可读的、已列出的 Session 所绑定的每个变更请求的最近编号、标题、状态、草稿标记、检查汇总、评审结论与可合并性：先是一个 `baseline` 帧，之后是 `changed` 帧。所有流共用一次运行。初始化之前和帧之间均响应取消；最后一条流结束及插件卸载会等待初始化与已接受的写入完成，再关闭本次运行的存储域。后续运行会等待该域关闭后重新打开，并读取已存状态。列举期间收到的绑定更新优先于初始快照。它经 `sessionQuery` 列出 Session 而不加载它们，已加载 Session 的可见绑定取自 `ctx.forgeSession`，其他 Session 的取自缓存的 `forgeChangeRequests` 摘要；它跟随已加载 Session 的绑定变化，并经 `ctx.forge.watch` 订阅每个已绑定的变更请求；已关闭的按空闲间隔轮询，已合并的保留订阅以接收显式刷新结果。每个变化了的状态以其 URL 的 SHA-256 摘要为键存入 `forge_panel_change_requests` 存储域，仅在所有已列出 Session 的绑定均已知时删除无人绑定的已存状态；写入失败时记录日志，状态仍保留在内存中。宿主缺少 Session 查询、投影缓存、存储或 Session 存储服务时，流以失败结束。
 
 浏览器入口先挂载 Remote，再挂载界面。每个 Session 一条流，同时供给标签页、标题栏按钮、新会话选项与创建卡片；第一个订阅方出现时打开，最后一个离开时关闭，传输重置后重新打开，在 Session scope 保留期间保存最后的状态。释放该 scope 时关闭流并移除缓存状态。新会话选项填入 `conversation.hero.options`，worktree 卡片填入 `conversation.input.dock`。worktree 卡片显示正在进行的创建，有消息在等待时“取消”调用 `stopCreation`；或显示消息等待时失败或被停止的那次尝试，“重试”调用 `retryWorktree`，“不使用工作树”调用 `cancelWorktree`。标签页用 Remote 宿主信息中的宿主主目录缩短路径，每次传输重置后重新读取。标签页把自己是否可见报告给标题栏按钮的按下状态。标题栏按钮收起停靠的标签页，或关闭其浮动标签页。toast 位于 `shell.overlay` 条目中，因此比标签页存在得更久。只要 `sidebar.session.row.trailing` 中的会话行图标或 `sidebar.session.row.hover` 中的悬浮卡片部分有一个已挂载，就由同一条变更请求状态流供给它们；两者都从会话列表的摘要值中读取 Session 的 worktree 与绑定。变更请求卡片接收变更请求、它的快照与可选操作，其他界面可以复用。变更视图是 `forge-changes` 资源标签页类型：它的地址 `dsh-resource://forge-changes/<session>/local` 与 `dsh-resource://forge-changes/<session>/change/<url>` 指明来源，导航参数可以指定要滚动到的文件。标签页类型启用 `keepMounted`，将访问过的正文及其所属 Session 引用保留至标签页记录结束。它的 keyed panel hook 仅为可见正文订阅；其他面板界面仍可能保持共享 Session 流开启。它的正文用 slot store 按标签页保存范围与布局选择，经 Remote 读取，并用共享的代码高亮器高亮各行；标签页标题显示变更图标与视图名称。
 
@@ -71,13 +78,13 @@ Session 在所创建的 worktree 中工作时，`localDiff` 以它的 `baseCommi
 | [`src/panel.ts`](src/panel.ts) | 面板状态、检查调度与登录检查 |
 | [`src/worktree.ts`](src/worktree.ts) | worktree 记录、投影、等待中的消息，以及在第一步创建 worktree |
 | [`src/states.ts`](src/states.ts) | 会话列表用的变更请求状态 |
-| [`src/git.ts`](src/git.ts) | 受限的只读 Git 命令 |
+| [`src/git.ts`](src/git.ts) | 按 Session 权限执行 Git 查询 |
 | [`src/parse.ts`](src/parse.ts) | Git 输出解析与远端顺序 |
 | [`src/diff.ts`](src/diff.ts) | 补丁解析、把未跟踪文件表示为新增，以及 numstat 记录 |
 | [`src/local-diff.ts`](src/local-diff.ts) | 分叉点、本地范围、新版本文本与 `branch` 范围摘要 |
 | [`src/client/mount.ts`](src/client/mount.ts) | Remote 挂载、slot 条目与操作结果映射 |
 | [`src/client/ChangeRequestCard.tsx`](src/client/ChangeRequestCard.tsx) | 可复用的变更请求卡片 |
-| [`src/client/LocalChangesCard.tsx`](src/client/LocalChangesCard.tsx) | 变更卡片 |
+| [`src/client/LocalChangesCard.tsx`](src/client/LocalChangesCard.tsx) | 本地变更卡片 |
 | [`src/client/ChangesTab.tsx`](src/client/ChangesTab.tsx) | 变更视图 |
 | [`src/client/DiffFile.tsx`](src/client/DiffFile.tsx) | 变更视图中的一个文件 |
 | [`src/client/FileLabel.tsx`](src/client/FileLabel.tsx) | 变更文件的标签：文件名在前，目录在后 |
@@ -102,16 +109,17 @@ Session 在所创建的 worktree 中工作时，`localDiff` 以它的 `baseCommi
 <a id="model-experience"></a>
 ## 模型体验
 
-间接影响，经由工作目录服务与 Session 的对话：关于 Session 新 worktree 的通知会加入第一次请求的消息，“在项目目录继续”会为下一次请求排入同类通知，“创建变更请求”会发送一条请 Agent 创建变更请求的用户消息。检查、状态、diff、恢复、会话列表与面板的其余部分都不会给模型请求增加内容。
+间接影响，经由工作目录服务与 Session 的对话：关于 Session 新 worktree 的通知会加入第一次请求的消息，“在项目目录继续”会为下一次请求排入同类通知，“创建变更请求”会发送一条请 Agent 创建变更请求的用户消息。“添加到输入框”提供以 `## User Comment N` 开头的冻结引用，包含 File、Side、Lines、Source、diff hunk 与 Comment；PR 引用还包含评审的提交。只有发送主输入框后，这些引用才进入正常记录的用户消息。检查、状态、恢复、会话列表与 GitHub 评审提交不会增加模型上下文。
 
 #### KV Cache 影响
 
-新 worktree 的通知没有影响，因为它属于 Session 的第一次请求，那时还没有任何缓存前缀。“在项目目录继续”之后的通知与“创建变更请求”发送的消息都追加在缓存前缀之后。
+新 worktree 的通知没有影响，因为它属于 Session 的第一次请求，那时还没有任何缓存前缀。“在项目目录继续”之后的通知、“创建变更请求”发送的消息与发送后的评审引用都追加在缓存前缀之后。
 
 ## 已知限制与待办工作
 
 <a id="known-limitations-and-deferred-work"></a>
 
+- **过滤文件与子模块** — 本地 diff 绕过 clean/process filter；Git 内置的换行、ident 与编码转换仍然生效。已物化的 LFS 文件及其他过滤文件可能显示为变更，即使普通 Git 认为它们未变；仅保留指针的检出可正常比较。面板不请求下载 LFS 对象。过滤器覆盖依赖 Git 2.31 或更新版本；旧 Git 可能忽略覆盖，按 Session 权限运行辅助程序。枚举与 diff 之间新增的驱动不在覆盖范围内。子模块提交变化仍可见，内部未提交修改不显示。
 - **只在显示时轮询**——只有会话列表的某一行或该 Session 的活动面板界面订阅时才会轮询状态，保活但隐藏的变更正文不订阅；其间检查结束不会有通知。
 - **会话列表中未打开的 Session**——会话列表从缓存的摘要中读取未加载 Session 的 worktree 与绑定：没有缓存摘要的 Session 两者都不显示；此版本之前最后使用的 Session 要打开之后才显示其 worktree。
 - **检查触发时机**——检出只在 Session 的工具结果与目录变化之后检查；Session 之外的改动要等到刷新或下一个工具结果才会出现。
diff --git a/packages/experimental/client-ui-forge/package.json b/packages/experimental/client-ui-forge/package.json
index 774979f61f..0b58307423 100644
--- a/packages/experimental/client-ui-forge/package.json
+++ b/packages/experimental/client-ui-forge/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-client-ui-forge",
   "description": "Sidebar panel for a Session's change requests, with a worktree option for new Sessions and its Host Remote",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/client-ui-forge/src/client/ChangeRequestCard.tsx b/packages/experimental/client-ui-forge/src/client/ChangeRequestCard.tsx
index 615d637e18..85c66d88c4 100644
--- a/packages/experimental/client-ui-forge/src/client/ChangeRequestCard.tsx
+++ b/packages/experimental/client-ui-forge/src/client/ChangeRequestCard.tsx
@@ -5,7 +5,7 @@
  * the ready-for-review or merge action.
  */
 
-import { useState, type ReactNode } from 'react'
+import { useEffect, useState, type ReactNode } from 'react'
 import clsx from 'clsx'
 import {
   Button, IconChevronDownOutlineRegular, IconChevronRightOutlineRegular, IconCloseOutlineRegular, IconCopyOutlineRegular,
@@ -39,6 +39,8 @@ export interface ChangeRequestActions {
   readonly markReady?: ((entry: ForgePanelChangeRequest) => Promise<void>) | undefined
   /** Merge the change request as `request` describes; settles once the outcome is reported. */
   readonly merge?: ((entry: ForgePanelChangeRequest, request: MergeRequest) => Promise<void>) | undefined
+  /** Load complete check details independently of polling; cancellation follows the open list. */
+  readonly readChecks?: ((url: string, headSha: string, signal: AbortSignal) => Promise<ChangeRequestSnapshot>) | undefined
   /** Open the changes view of the change request. */
   readonly viewChanges?: ((entry: ForgePanelChangeRequest) => void) | undefined
 }
@@ -167,10 +169,10 @@ function Summary({ snapshot, now, t }: {
   return (
     <>
       <span className={css.ci} data-tone={ci.kind === 'failed' ? 'error' : undefined}>
-        {ci.kind !== 'none' && <CheckGlyph state={ROLLUP[snapshot.checksRollup]} size={12} />}
+        {ci.kind !== 'none' && <CheckGlyph state={ci.kind === 'cancelled' ? 'cancelled' : ROLLUP[snapshot.checksRollup]} size={12} />}
         {ci.kind === 'failed'
           ? ci.count > 0 ? t('change.ci.failed', { count: ci.count }) : t('change.ci.failedUnlisted')
-          : t(`change.ci.${ci.kind}`)}
+          : ci.kind === 'cancelled' ? t('change.ci.cancelled', { count: ci.count }) : t(`change.ci.${ci.kind}`)}
       </span>
       {flag !== undefined && <span className={css.flag} data-flag={flag}>{t(`change.flag.${flag}`)}</span>}
     </>
@@ -187,13 +189,36 @@ function Target({ snapshot, t }: { readonly snapshot: ChangeRequestSnapshot; rea
   )
 }
 
-function ChecksRow({ snapshot, openLink, t }: {
+type CheckRead = { readonly kind: 'idle' | 'loading' }
+  | { readonly kind: 'ready'; readonly snapshot: ChangeRequestSnapshot }
+  | { readonly kind: 'failed'; readonly message: string }
+
+function ChecksRow({ snapshot, openLink, readChecks, t }: {
   readonly snapshot: ChangeRequestSnapshot
   readonly openLink: (url: string) => void
+  readonly readChecks: ChangeRequestActions['readChecks']
   readonly t: Translate
 }): ReactNode {
   const [open, setOpen] = useState(false)
-  if (snapshot.checks.length === 0) {
+  const [read, setRead] = useState<CheckRead>({ kind: 'idle' })
+  const [attempt, setAttempt] = useState(0)
+  const { url, headSha, checksTruncated } = snapshot
+  useEffect(() => {
+    if (!open || !checksTruncated || readChecks === undefined) { setRead({ kind: 'idle' }); return }
+    const controller = new AbortController()
+    setRead({ kind: 'loading' })
+    void (async () => {
+      try {
+        const result = await readChecks(url, headSha, controller.signal)
+        if (!controller.signal.aborted) setRead({ kind: 'ready', snapshot: result })
+      } catch (error) {
+        if (!controller.signal.aborted) setRead({ kind: 'failed', message: error instanceof Error ? error.message : String(error) })
+      }
+    })()
+    return () => { controller.abort() }
+  }, [open, url, headSha, checksTruncated, readChecks, attempt])
+  const displayed = read.kind === 'ready' && read.snapshot.headSha === headSha ? read.snapshot : snapshot
+  if (displayed.checks.length === 0 && !displayed.checksTruncated) {
     return (
       <div className={css.row}>
         <span className={css.rowIcon}><CheckGlyph state="neutral" /></span>
@@ -202,15 +227,22 @@ function ChecksRow({ snapshot, openLink, t }: {
       </div>
     )
   }
-  const counts = checkCounts(snapshot.checks)
-  const summary = [
+  const counts = checkCounts(displayed.checks)
+  const summary = displayed.checksTruncated ? t('change.checks.truncated', { count: displayed.checks.length }) : [
     ...counts.failed > 0 ? [t('change.checks.failed', { count: counts.failed })] : [],
     ...counts.running > 0 ? [t('change.checks.running', { count: counts.running })] : [],
     ...counts.passed > 0 ? [t('change.checks.passed', { count: counts.passed })] : [],
+    ...counts.cancelled > 0 ? [t('change.checks.cancelled', { count: counts.cancelled })] : [],
     ...counts.other > 0 ? [t('change.checks.other', { count: counts.other })] : [],
   ].join(' · ')
   const close = (): void => { setOpen(false) }
-  const truncated: MenuEntry[] = [{ type: 'label', id: 'truncated', text: t('change.checks.truncated', { count: snapshot.checks.length }) }]
+  const footer: MenuEntry[] = displayed.checksTruncated
+    ? [{ type: 'label', id: 'truncated', text: t('change.checks.truncated', { count: displayed.checks.length }) }] : []
+  if (read.kind === 'loading') footer.push({ id: 'loading', label: t('change.checks.loading'), disabled: true, icon: <StateDot state="ongoing" size={14} /> })
+  if (read.kind === 'failed') {
+    footer.push({ type: 'label', id: 'failed', text: t('change.checks.loadFailed', { message: read.message }) },
+      { id: 'retry', label: t('change.checks.retry') })
+  }
   return (
     <Menu
       open={open}
@@ -221,17 +253,18 @@ function ChecksRow({ snapshot, openLink, t }: {
       listClassName={css.checksList}
       anchor={(
         <button type="button" className={clsx(css.row, css.rowButton)} aria-haspopup="menu" aria-expanded={open} onClick={() => { setOpen(!open) }}>
-          <span className={css.rowIcon}><CheckGlyph state={ROLLUP[snapshot.checksRollup]} /></span>
+          <span className={css.rowIcon}><CheckGlyph state={ROLLUP[displayed.checksRollup]} /></span>
           <span className={css.rowLabel}>{t('change.row.checks')}</span>
-          <span className={css.rowValue} data-tone={counts.failed > 0 ? 'error' : undefined}>
+          <span className={css.rowValue} data-tone={!displayed.checksTruncated && counts.failed > 0 ? 'error' : undefined}>
             <span className={css.ellipsis}>{summary}</span>
           </span>
           <IconChevronRightOutlineRegular size={12} className={css.rowChevron} />
         </button>
       )}
-      {...snapshot.checksTruncated ? { footer: truncated } : {}}
+      footer={footer}
+      onSelect={() => { setAttempt(value => value + 1) }}
     >
-      {orderedChecks(snapshot.checks).map((check, index) => {
+      {orderedChecks(displayed.checks).map((check, index) => {
         const { url } = check
         return (
           <MenuItemButton
@@ -395,7 +428,7 @@ function Details({ entry, snapshot, name, now, actions, locale, t }: {
     : snapshot.mergeability === 'conflicting' ? t('change.merge.conflicting', { base: snapshot.baseBranch }) : t('change.merge.unknown')
   return (
     <div className={css.rows}>
-      <ChecksRow snapshot={snapshot} openLink={actions.openLink} t={t} />
+      <ChecksRow key={snapshot.headSha} snapshot={snapshot} openLink={actions.openLink} readChecks={actions.readChecks} t={t} />
       <div className={css.row}>
         <span className={css.rowIcon}><IconUserOutlineRegular size={16} /></span>
         <span className={css.rowLabel}>{t('change.row.review')}</span>
diff --git a/packages/experimental/client-ui-forge/src/client/ChangedFiles.module.css b/packages/experimental/client-ui-forge/src/client/ChangedFiles.module.css
new file mode 100644
index 0000000000..4a57098d20
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/ChangedFiles.module.css
@@ -0,0 +1,19 @@
+/* The same directory rows fit a portal menu and the changes pane's navigation column. */
+.root { box-sizing: border-box; width: 100%; min-width: 0; display: flex; flex-direction: column; min-height: 0; color: var(--dsw-alias-label-primary); font-size: 12px; }
+.search { padding: 8px; }
+.rows { overflow: auto; min-height: 0; padding: 0 4px 6px; }
+.row { box-sizing: border-box; display: flex; align-items: center; gap: 6px; width: 100%; min-width: 0; min-height: 30px; padding: 4px 6px; border: 0; border-radius: var(--dsw-radius-sm); background: transparent; color: inherit; font: inherit; text-align: start; cursor: pointer; }
+.row svg { flex: none; }
+.name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.selected { background: var(--dsw-alias-interactive-bg-hover); }
+.chevron { display: inline-flex; flex: 0 0 12px; }
+.collapsed { transform: rotate(-90deg); }
+.empty { padding: 12px 8px; color: var(--dsw-alias-label-secondary); }
+.menu { width: min(360px, calc(100vw - 24px)); }
+.trigger { display: inline-flex; align-items: center; gap: 4px; height: 28px; padding: 0 8px; border: 0; border-radius: var(--dsw-radius-sm); background: transparent; color: var(--dsw-alias-label-primary); font: inherit; white-space: nowrap; cursor: pointer; }
+.trigger:disabled { color: var(--dsw-alias-label-tertiary); cursor: default; }
+@media (hover: hover) { .row:hover, .trigger:hover:not(:disabled) { background: var(--dsw-alias-interactive-bg-hover); } }
+@media (pointer: coarse) { .row { min-height: 44px; } .search input { font-size: 16px; } }
+
+.searchInput { box-sizing: border-box; width: 100%; max-width: 100%; }
+.searchInput input::placeholder { color: var(--dsw-alias-label-secondary); }
diff --git a/packages/experimental/client-ui-forge/src/client/ChangedFiles.tsx b/packages/experimental/client-ui-forge/src/client/ChangedFiles.tsx
new file mode 100644
index 0000000000..7fae97d78d
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/ChangedFiles.tsx
@@ -0,0 +1,95 @@
+/** Changed-file navigation shared by the toolbar menu and wide diff pane, with a disclosure column on every row. */
+import { useMemo, useState, type ReactNode } from 'react'
+import clsx from 'clsx'
+import { FileTypeIcon, IconChevronDownOutlineRegular, IconFolderCloseRegular, Input, Menu, Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { ForgeDiffFile } from '../types.ts'
+import { Counts } from './DiffFile.tsx'
+import { changedFileTree, filterFileTree, type ChangedFileNode } from './file-tree.ts'
+import type { NS } from './locales.ts'
+import css from './ChangedFiles.module.css'
+
+/** Viewing choices remain owned by the changes tab while either navigation surface is hidden. */
+export interface ChangedFilesState {
+  readonly query: string
+  readonly collapsed: Readonly<Record<string, boolean>>
+  readonly selected: string | null
+}
+
+/** Data and actions of the changed-file navigator. */
+export interface ChangedFilesProps extends PropsLocale<typeof NS> {
+  readonly files: readonly ForgeDiffFile[]
+  readonly state: ChangedFilesState
+  readonly filter: (query: string) => void
+  readonly toggle: (path: string) => void
+  readonly jump: (path: string) => void
+  /** A menu row participates in the shared menu's keyboard walk. */
+  readonly menu?: boolean
+}
+
+function Rows({ nodes, depth, props }: {
+  readonly nodes: readonly ChangedFileNode[]
+  readonly depth: number
+  readonly props: ChangedFilesProps
+}): ReactNode {
+  const { state, toggle, jump, menu, t } = props
+  return nodes.map((node) => {
+    const directory = node.kind === 'directory'
+    const expanded = directory && (state.query.trim() !== '' || state.collapsed[node.path] !== true)
+    const label = node.kind === 'file' && node.file.previousPath !== null
+      ? t('diff.renamedPath', { from: node.file.previousPath, path: node.path }) : node.path
+    return <div key={node.path}>
+      <Tooltip label={label} portal side="left">
+        <button type="button" role={menu ? 'menuitem' : undefined} className={clsx(css.row, !directory && state.selected === node.path && css.selected)}
+          style={{ paddingInlineStart: `${8 + depth * 14}px` }} aria-label={label} aria-expanded={directory ? expanded : undefined}
+          aria-current={!directory && state.selected === node.path ? 'true' : undefined}
+          onKeyDown={(event) => {
+            if (!directory || !['ArrowLeft', 'ArrowRight'].includes(event.key)) return
+            event.preventDefault()
+            if ((event.key === 'ArrowRight') !== expanded) toggle(node.path)
+          }}
+          onClick={(event) => { if (directory) { event.stopPropagation(); toggle(node.path) } else jump(node.path) }}>
+          <span className={css.chevron} aria-hidden="true">
+            {directory && <IconChevronDownOutlineRegular size={12} className={clsx(!expanded && css.collapsed)} />}
+          </span>
+          {directory ? <IconFolderCloseRegular size={14} /> : <FileTypeIcon path={node.path} size={14} />}
+          <span className={css.name}>{node.name}</span>
+          {node.kind === 'file' && <Counts file={node.file} t={t} />}
+        </button>
+      </Tooltip>
+      {node.kind === 'directory' && expanded && <Rows nodes={node.children} depth={depth + 1} props={props} />}
+    </div>
+  })
+}
+
+/**
+ * Render searchable directory navigation without reading file contents.
+ * @param props - changed files, per-tab choices, navigation actions, and localized copy.
+ * @returns the search field and matching branches.
+ */
+export function ChangedFiles(props: ChangedFilesProps): ReactNode {
+  const tree = useMemo(() => changedFileTree(props.files), [props.files])
+  const nodes = useMemo(() => filterFileTree(tree, props.state.query), [tree, props.state.query])
+  return <div className={css.root} data-forge-file-tree="">
+    <div className={css.search}><Input className={clsx(css.searchInput)} aria-label={props.t('diff.filterFiles')} placeholder={props.t('diff.filterFiles')}
+      value={props.state.query} onChange={(event) => { props.filter(event.target.value) }}
+      onKeyDown={(event) => { if (['Home', 'End', 'ArrowLeft', 'ArrowRight'].includes(event.key)) event.stopPropagation() }} /></div>
+    <div className={css.rows}>
+      {nodes.length === 0 ? <div className={css.empty}>{props.t('diff.noMatchingFiles')}</div> : <Rows nodes={nodes} depth={0} props={props} />}
+    </div>
+  </div>
+}
+
+/**
+ * Open directory navigation through the existing files toolbar entry.
+ * @param props - navigator data and whether its owning tab is visible.
+ * @returns the toolbar entry and its portalled menu.
+ */
+export function ChangedFilesMenu({ visible, ...props }: ChangedFilesProps & { readonly visible: boolean }): ReactNode {
+  const [open, setOpen] = useState(false)
+  return <Menu open={visible && open} portal dense align="start" listClassName={css.menu} onClose={() => { setOpen(false) }}
+    anchor={<button type="button" className={css.trigger} aria-haspopup="menu" aria-expanded={visible && open} disabled={props.files.length === 0}
+      onClick={() => { setOpen(value => !value) }}>{props.t('diff.allFiles', { count: props.files.length })}<IconChevronDownOutlineRegular size={12} /></button>}>
+    <ChangedFiles {...props} menu jump={(path) => { setOpen(false); props.jump(path) }} />
+  </Menu>
+}
diff --git a/packages/experimental/client-ui-forge/src/client/ChangesTab.module.css b/packages/experimental/client-ui-forge/src/client/ChangesTab.module.css
index 95b8d3410a..739513374c 100644
--- a/packages/experimental/client-ui-forge/src/client/ChangesTab.module.css
+++ b/packages/experimental/client-ui-forge/src/client/ChangesTab.module.css
@@ -1,6 +1,7 @@
 /* Changes view: the source header, the toolbar, notices, then one scrolling
    list of file sections whose headers stick while their lines scroll. */
 .root {
+  container: forge-changes / inline-size;
   --forge-changes-bg: var(--dsw-alias-bg-base);
   --forge-fill: var(--dsw-static-neutral-50);
   --forge-diff-empty: color-mix(in srgb, var(--dsw-alias-interactive-bg-hover) 50%, transparent);
@@ -227,12 +228,30 @@
   margin-left: auto;
 }
 
-.files {
+.body {
+  display: flex;
   flex: 1;
   min-height: 0;
+}
+
+.treeToggle { display: none; }
+
+@container forge-changes (min-width: 760px) {
+  .treeToggle { display: inline-flex; }
+  .treePane:not([hidden]) { display: block; }
+}
+
+.files {
+  flex: 1;
+  min-width: 0;
+  min-height: 0;
   overflow: auto;
 }
 
+.files:focus {
+  outline: none;
+}
+
 /* The actions of a failed read, side by side. */
 .actions {
   display: flex;
@@ -306,13 +325,6 @@
   display: flex;
   flex: 0 1 auto;
   min-width: 0;
-  padding: 0;
-  border: 0;
-  background: transparent;
-  color: inherit;
-  cursor: pointer;
-  font: inherit;
-  text-align: left;
 }
 
 .fileSpacer {
@@ -356,7 +368,7 @@
 
 .line {
   display: grid;
-  grid-template-columns: 3.5em 3.5em 1.4em minmax(0, 1fr);
+  grid-template-columns: var(--forge-number-width, 3.5em) var(--forge-number-width, 3.5em) 1.4em minmax(0, 1fr);
   box-sizing: border-box;
   min-height: 22px;
   line-height: 22px;
@@ -364,7 +376,7 @@
 }
 
 .code:not([data-wrap]):not([data-split]) .line {
-  grid-template-columns: 3.5em 3.5em 1.4em max-content;
+  grid-template-columns: var(--forge-number-width, 3.5em) var(--forge-number-width, 3.5em) 1.4em max-content;
 }
 
 .pair {
@@ -377,7 +389,7 @@
 
 .cell {
   display: grid;
-  grid-template-columns: 3.5em minmax(0, 1fr);
+  grid-template-columns: var(--forge-number-width, 3.5em) minmax(0, 1fr);
   box-sizing: border-box;
   min-width: 0;
 }
@@ -401,7 +413,8 @@
 }
 
 .number {
-  padding-right: 8px;
+  box-sizing: border-box;
+  padding-right: 6px;
   color: var(--dsw-alias-label-tertiary);
   text-align: right;
   user-select: none;
@@ -615,10 +628,22 @@
 .localView:focus-visible,
 .localToggle:focus-visible,
 .fileToggle:focus-visible,
-.filePath:focus-visible,
 .localFile:focus-visible,
 .select:focus-visible,
 .gap:focus-visible {
   outline: var(--dsw-focus-ring-width) solid var(--dsw-focus-ring-color, var(--dsw-alias-state-business-primary));
   outline-offset: -2px;
 }
+
+.reviewNotice { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px; }
+
+.code[data-split][data-native-side="L"] [data-diff-side="R"],
+.code[data-split][data-native-side="L"] [data-diff-side="R"] *,
+.code[data-split][data-native-side="R"] [data-diff-side="L"],
+.code[data-split][data-native-side="R"] [data-diff-side="L"] * { user-select: none; }
+.reviewSubmit { flex: none; white-space: nowrap; }
+
+.code[data-single-side] .line { grid-template-columns: var(--forge-number-width) 1.4em minmax(0, 1fr); }
+.code[data-single-side]:not([data-wrap]) .line { grid-template-columns: var(--forge-number-width) 1.4em max-content; }
+.reviewFile { padding: 12px 0; }
+.reviewFile > h3 { margin: 0 10px; font-size: 12px; font-weight: 500; overflow-wrap: anywhere; }
diff --git a/packages/experimental/client-ui-forge/src/client/ChangesTab.tsx b/packages/experimental/client-ui-forge/src/client/ChangesTab.tsx
index 377ea7e932..3e3bfa7159 100644
--- a/packages/experimental/client-ui-forge/src/client/ChangesTab.tsx
+++ b/packages/experimental/client-ui-forge/src/client/ChangesTab.tsx
@@ -7,25 +7,33 @@
  * scope summary changes; a read keeps the previous changes on screen until it settles.
  */
 
-import { useEffect, useLayoutEffect, useMemo, useRef, useState, type ReactNode } from 'react'
+import { useEffect, useId, useLayoutEffect, useMemo, useRef, useState, useSyncExternalStore, type KeyboardEvent, type ReactNode } from 'react'
 import clsx from 'clsx'
 import {
   Button, IconChevronDownOutlineRegular, IconChevronsUpDownOutlineRegular, IconCompareSplitOutlineRegular, IconInfoOutlineRegular,
-  IconListPenOutlineRegular, IconNowrapFillRegular, IconRightUpOutlineRegular, IconWrapFillRegular, Menu, StateDot, Tooltip,
+  IconListPenOutlineRegular, IconNowrapFillRegular, IconRightUpOutlineRegular, IconWorkspaceTreeOutlineRegular, IconWrapFillRegular,
+  Menu, StateDot, Tooltip,
   type MenuEntry,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { HostObservable, InjectFace, PropsLocale, PropsRuntime, PropsStore } from '@deepseek-ai/dsh-client-ui-slots'
-import type {} from '@deepseek-ai/dsh-client-ui-sidebar-right/client'
+import type { SidebarRightTabInfo } from '@deepseek-ai/dsh-client-ui-sidebar-right/client'
 import type { RemoteResult } from '@deepseek-ai/dsh-typert-protocol'
 import { fileAddressFor, pathPartsOf } from '@deepseek-ai/dsh-util-workspace-path'
 import type {
   ForgeChangeRequestDiff, ForgeDiffFile, ForgeLocalDiff, ForgeLocalScope, ForgePanelChangeRequest, ForgePanelState,
 } from '../types.ts'
+import type { ForgeReviewRequest, ForgeReviewResult } from '@deepseek-ai/dsh-experimental-forge/types'
+import { sameReviewSource, type ReviewQueue } from './review-queue.ts'
+import { ReviewThread, useFileReview } from './ReviewThread.tsx'
+import type { ReviewActions } from './ReviewComposer.tsx'
+import { SubmitReview } from './SubmitReview.tsx'
+import type { ReviewSelection } from './review.ts'
 import { parseChangesAddress, type ChangesSource } from './changes-address.ts'
 import type { createChangesStore } from './changes-store.ts'
 import { Counts, DiffFile, type DiffFileAction } from './DiffFile.tsx'
+import { FileTreePane, type FileTreePosition } from './FileTreePane.tsx'
+import { ChangedFilesMenu, type ChangedFilesProps, type ChangedFilesState } from './ChangedFiles.tsx'
 import { drawnLines, matchesHunks, textLines } from './diff-rows.ts'
-import { FileLabel } from './FileLabel.tsx'
 import { ChangeRequestGlyph } from './glyphs.tsx'
 import type { ForgePanelKey, NS } from './locales.ts'
 import { RefreshGlyph } from './RefreshGlyph.tsx'
@@ -40,6 +48,12 @@ type ScopeKind = ForgeLocalScope['kind']
 
 /** Business face of the changes tab body. */
 export interface ChangesTabInjected {
+  /** Append a frozen comment to the main input without submitting it. */
+  readonly addReviewToInput: (selection: ReviewSelection) => boolean
+  /** Records retained across Session switches and cleared when this tab occurrence closes. */
+  readonly reviewQueue: (tab: Pick<SidebarRightTabInfo['tab'], 'id' | 'signal'>) => ReviewQueue
+  /** Publish one comment or a completed review; never retries mutations. */
+  readonly submitReview: (url: string, request: ForgeReviewRequest) => Promise<RemoteResult<ForgeReviewResult>>
   /** Panel source while visible; the renderer releases the subscription for an inactive key. */
   readonly keyedHooks: { readonly panel: (visibility: string) => HostObservable<PanelSnapshot> | undefined }
   /** Open the panel stream again after it ended. */
@@ -125,6 +139,7 @@ const FAILURE: Partial<Record<string, ForgePanelKey>> = {
   'forgePanel/not-a-checkout': 'checkout.none',
   'forgePanel/no-fork-point': 'diff.noForkPoint',
   'forgePanel/diff-too-large': 'diff.tooLarge',
+  'forgePanel/filter-config-failed': 'diff.filterConfigFailed',
 }
 
 async function readChanges(
@@ -177,9 +192,12 @@ function badgeOf(file: ForgeDiffFile, data: ChangesData, t: Translate): string {
   return parts.join(' · ')
 }
 
-function ChangeHeader({ url, entry, openLink, t }: {
+function ChangeHeader({ url, entry, openLink, reviewCount, reviewDisabled, onReview, t }: {
   readonly url: string
   readonly entry: ForgePanelChangeRequest | undefined
+  readonly reviewCount: number
+  readonly reviewDisabled: boolean
+  readonly onReview: () => void
   readonly openLink: (url: string) => void
   readonly t: Translate
 }): ReactNode {
@@ -192,8 +210,11 @@ function ChangeHeader({ url, entry, openLink, t }: {
       <ChangeRequestGlyph tone={tone} label={t('change.stateAria', { state: t(TONE_LABEL[tone]) })} />
       <span className={css.headerTitle}>{snapshot === null ? url : snapshot.title}</span>
       {number !== null && <span className={css.headerNumber}>{t('change.number', { number })}</span>}
+      <Button size="sm" variant="outline" className={clsx(css.headerEnd, css.reviewSubmit)} disabled={reviewDisabled} onClick={onReview}>
+        {t('review.submit')}{reviewCount > 0 ? ` (${reviewCount})` : ''}
+      </Button>
       <Tooltip label={t('change.view')} side="bottom">
-        <button type="button" className={clsx(css.tool, css.headerEnd)} aria-label={t('change.view')} onClick={() => { openLink(href) }}>
+        <button type="button" className={css.tool} aria-label={t('change.view')} onClick={() => { openLink(href) }}>
           <IconRightUpOutlineRegular size={14} />
         </button>
       </Tooltip>
@@ -259,40 +280,6 @@ function ScopeMenu({ scope, choose, t }: {
   )
 }
 
-function FilesMenu({ files, jump, t }: {
-  readonly files: readonly ForgeDiffFile[]
-  readonly jump: (path: string) => void
-  readonly t: Translate
-}): ReactNode {
-  const [open, setOpen] = useState(false)
-  return (
-    <Menu
-      open={open}
-      portal
-      align="start"
-      dense
-      autoFocus
-      listClassName={css.menuList}
-      items={files.map(file => ({
-        id: file.path,
-        label: <span className={css.menuRow}><FileLabel path={file.path} className={css.menuPath} /><Counts file={file} t={t} /></span>,
-      }))}
-      onClose={() => { setOpen(false) }}
-      onSelect={(path) => {
-        setOpen(false)
-        jump(path)
-      }}
-      anchor={(
-        <button type="button" className={css.select} aria-haspopup="menu" aria-expanded={open} disabled={files.length === 0}
-          onClick={() => { setOpen(value => !value) }}>
-          {t('diff.allFiles', { count: files.length })}
-          <IconChevronDownOutlineRegular size={12} />
-        </button>
-      )}
-    />
-  )
-}
-
 function Notice({ children, action }: { readonly children: ReactNode; readonly action?: ReactNode }): ReactNode {
   return (
     <div className={css.notice} role="status">
@@ -303,6 +290,19 @@ function Notice({ children, action }: { readonly children: ReactNode; readonly a
   )
 }
 
+
+function OrphanReviews({ path, actions, t }: PropsLocale<typeof NS> & {
+  readonly path: string
+  readonly actions: ReviewActions
+}): ReactNode {
+  const state = useFileReview(actions, path)
+  return <section className={css.reviewFile} data-forge-review-file={path}>
+    <h3>{path}</h3>
+    {state.threads.map(thread => <ReviewThread key={thread.key} thread={thread}
+      actions={actions} locked={state.locked} outdated split={false} t={t} />)}
+  </section>
+}
+
 /**
  * Render the changes tab of one Session.
  * @param props - tab information, the tab's choices, the panel snapshot hook, reads and actions, and copy.
@@ -310,15 +310,59 @@ function Notice({ children, action }: { readonly children: ReactNode; readonly a
  */
 export function ChangesTab({
   useTabInfo, sessionId, useStore, actions, usePanel, reconnect, localDiff, localText, changeRequestDiff, changeRequestText,
-  openLink, copyPath, createChangeRequest, report, t,
+  openLink, copyPath, createChangeRequest, addReviewToInput, reviewQueue, submitReview, report, t,
 }: ChangesTabProps): ReactNode {
   const { tab } = useTabInfo()
   const { navigation, signal } = tab
   const target = useMemo(() => parseChangesAddress(tab.contentId), [tab.contentId])
   if (target === undefined) throw new Error(`forge-panel: not a changes address "${tab.contentId}"`)
   const source = target.source
+  const queue = reviewQueue(tab)
+  useSyncExternalStore(queue.subscribe, queue.getStatus)
+  const reviewState = queue.getSnapshot()
+  const [reviewOpen, setReviewOpen] = useState(false)
+  const [reviewBusy, setReviewBusy] = useState(false)
+  useEffect(() => { if (!tab.visible) setReviewOpen(false) }, [tab.visible])
+  const reviewRunning = useRef(false)
+  const [reviewError, setReviewError] = useState<string | null>(null)
+  const publishReview = async (
+    url: string, request: ForgeReviewRequest, complete: (url: string) => boolean,
+  ): Promise<string | undefined> => {
+    if (reviewRunning.current || !queue.begin(request)) return t('review.saveFailed')
+    reviewRunning.current = true
+    setReviewBusy(true)
+    setReviewError(null)
+    try {
+      const response = await submitReview(url, request)
+      if (!response.ok || (!response.value.ok && response.value.code === 'unknown')) {
+        setReviewError(t('review.unknown'))
+        return t('review.unknown')
+      }
+      const result = response.value
+      if (!result.ok) {
+        queue.finish(false)
+        const message = result.code === 'stale' ? t('review.stale') : result.code === 'unsupported'
+          ? t('review.unsupported') : t('review.failed', { message: result.message })
+        setReviewError(message)
+        return message
+      }
+      if (!complete(result.url)) return t('review.unknown')
+      report(request.kind === 'review' ? 'review.submitted' : 'review.published')
+      if (request.kind === 'review') setReviewOpen(false)
+      return undefined
+    } catch (_error) {
+      setReviewError(t('review.unknown'))
+      return t('review.unknown')
+    } finally {
+      reviewRunning.current = false
+      setReviewBusy(false)
+    }
+  }
   const choices = useStore(store => store.byTab[tab.id])
   const [wanted, setWanted] = useState<string | null>(null)
+  const [treeState, setTreeState] = useState<ChangedFilesState>({ query: '', collapsed: {}, selected: null })
+  const [treePosition, setTreePosition] = useState<FileTreePosition>('left')
+  const treeId = useId()
   const [chosen, setChosen] = useState<Readonly<Record<string, boolean>>>({})
   // Each navigation applies once; its file, if it names one, opens and scrolls into view.
   useEffect(() => {
@@ -326,6 +370,7 @@ export function ChangesTab({
     actions.navigated(tab.id, navigation.revision)
     const path = navigation.params?.path
     if (path === undefined) return
+    setTreeState(value => ({ ...value, selected: path }))
     setChosen(value => ({ ...value, [path]: true }))
     setWanted(path)
   }, [choices, navigation.revision, navigation.params, actions, tab.id])
@@ -380,17 +425,21 @@ export function ChangesTab({
   const [revealed, setRevealed] = useState<ReadonlySet<string>>(new Set())
   const initial = useMemo(() => initiallyOpen(data === null ? [] : data.files), [data])
   const sections = useRef(new Map<string, HTMLElement>())
+  const scrollport = useRef<HTMLDivElement>(null)
+  // A short final file cannot align with the viewport top; retain its jump until the reader scrolls away.
+  const jumpPosition = useRef<{ readonly data: ChangesData; readonly top: number } | null>(null)
   useLayoutEffect(() => {
     if (!tab.visible || wanted === null || data === null) return
     sections.current.get(wanted)?.scrollIntoView({ block: 'start' })
+    if (scrollport.current !== null) jumpPosition.current = { data, top: scrollport.current.scrollTop }
     setWanted(null)
   }, [tab.visible, wanted, data])
   const refresh = (): void => { setAttempt(value => value + 1) }
   const root = state !== null && state.checkout.state === 'ready' ? state.checkout.checkout.root : null
-  // A failure with its own message offers no retry; a change request's failure also offers its web page.
+  // Configuration reads may recover after the user fixes Git settings or raises the output limit.
   const message = failed === null ? undefined : FAILURE[failed]
   const changeUrl = source.kind === 'change' ? entry?.snapshot?.url ?? source.url : null
-  const retry = message === undefined
+  const retry = message === undefined || failed === 'forgePanel/filter-config-failed'
 
   /** Apply a change to the unchanged lines of `owner`, unless newer changes replaced it. */
   const update = (owner: ChangesData, change: (value: Expansion) => Expansion): void => {
@@ -434,6 +483,58 @@ export function ChangesTab({
     return list
   }
 
+  const reviewForm = tab.visible && data !== null && reviewOpen && data.kind === 'change' && <SubmitReview queue={queue}
+    url={data.url} headSha={data.headSha} busy={reviewBusy} error={reviewError} close={() => { setReviewOpen(false) }}
+    check={() => { openLink(data.url) }} reconcile={() => { queue.finish(false); setReviewError(null) }}
+    submit={() => {
+      const latest = queue.getSnapshot()
+      void publishReview(data.url, { kind: 'review', headSha: data.headSha, event: latest.event,
+        body: latest.body, comments: latest.comments.map(item => item.comment) }, url => queue.finish(true, url))
+    }} t={t} />
+
+  const recordActions: ReviewActions = {
+    source: source.kind === 'local' ? { kind: 'local', scope } : { kind: 'change', url: source.url, headSha: data?.kind === 'change' ? data.headSha : '' },
+    records: queue, addToInput: addReviewToInput, openLink,
+  }
+  const absentPaths = [...new Set([...reviewState.comments, ...reviewState.records.map(item => item.selection)]
+    .filter(item => sameReviewSource(item.source, recordActions.source)).map(item => item.comment.path))]
+    .filter(path => !data?.files.some(file => file.path === path))
+  const orphanRecords = absentPaths.map(path => <OrphanReviews key={path} path={path} actions={recordActions} t={t} />)
+
+  const files = data === null ? [] : data.files
+  const jump = (path: string): void => {
+    setTreeState(value => ({ ...value, selected: path }))
+    setChosen(value => ({ ...value, [path]: true }))
+    setWanted(path)
+  }
+  const navigateFiles = (event: KeyboardEvent<HTMLDivElement>): void => {
+    if (!tab.visible || event.defaultPrevented || event.nativeEvent.isComposing
+      || event.altKey || event.ctrlKey || event.metaKey || event.shiftKey
+      || (event.key !== 'ArrowLeft' && event.key !== 'ArrowRight')) return
+    const viewport = event.currentTarget
+    const origin = event.target
+    const selection = window.getSelection()
+    if (!(origin instanceof HTMLElement) || !viewport.contains(origin)
+      || origin.closest('input, textarea, select, [contenteditable]:not([contenteditable="false"]), [data-forge-comment]') !== null
+      || (selection !== null && !selection.isCollapsed)) return
+    const remembered = jumpPosition.current
+    let index = remembered !== null && remembered.data === data && remembered.top === viewport.scrollTop
+      ? files.findIndex(file => file.path === treeState.selected) : -1
+    if (index < 0) {
+      const top = viewport.getBoundingClientRect().top
+      index = Math.max(0, files.findLastIndex((file) => {
+        const section = sections.current.get(file.path)
+        return section !== undefined && section.getBoundingClientRect().top <= top + 1
+      }))
+    }
+    event.preventDefault()
+    event.stopPropagation()
+    const next = files[index + (event.key === 'ArrowRight' ? 1 : -1)]
+    if (next === undefined) return
+    viewport.focus({ preventScroll: true })
+    jump(next.path)
+  }
+
   let body: ReactNode
   if (data === null) {
     if (state === null && snapshot?.disconnected) {
@@ -461,10 +562,14 @@ export function ChangesTab({
       )
     }
   } else if (data.files.length === 0) {
-    body = <div className={css.centered}>{t('diff.empty')}</div>
+    body = <div className={css.files}>{orphanRecords}<div className={css.centered}>{t('diff.empty')}</div></div>
   } else {
     body = (
-      <div className={css.files} data-forge-changes-scroll="">
+      <div ref={scrollport} className={css.files} data-forge-changes-scroll="" role="region"
+        aria-label={t('diff.allFiles', { count: files.length })} aria-keyshortcuts="ArrowLeft ArrowRight" tabIndex={0}
+        onKeyDown={navigateFiles} onScroll={(event) => {
+          if (jumpPosition.current?.top !== event.currentTarget.scrollTop) jumpPosition.current = null
+        }}>
         {data.files.map((file) => {
           const path = file.path
           return (
@@ -472,6 +577,19 @@ export function ChangesTab({
               key={path}
               visible={tab.visible}
               file={file}
+              review={{ source: data.kind === 'local' ? { kind: 'local', scope: data.scope } : { kind: 'change', url: data.url, headSha: data.headSha },
+                addToInput: addReviewToInput,
+                records: queue, openLink, reviewStarted: reviewState.comments.length > 0,
+                onQuoted: (selection) => { if (!queue.recordAgent(selection)) report('review.saveFailed') },
+                publishingBlocked: reviewState.uncertain !== null,
+                ...data.kind === 'local' ? {} : {
+                  queue: selection => queue.add(selection),
+                  publish: selection => selection.source.kind === 'change'
+                    ? publishReview(selection.source.url, { kind: 'comment', headSha: selection.source.headSha, comment: selection.comment },
+                      url => queue.published(selection, url))
+                    : Promise.resolve(t('review.stale')),
+                },
+              }}
               expanded={chosen[path] ?? initial.has(path)}
               onToggle={() => { setChosen(value => ({ ...value, [path]: !(value[path] ?? initial.has(path)) })) }}
               large={drawnLines(file) > LARGE_FILE_LINES}
@@ -485,7 +603,6 @@ export function ChangesTab({
               badge={badgeOf(file, data, t)}
               tooltip={pathTooltipOf(file, t)}
               actions={fileActions(data, file)}
-              onCopyPath={() => { copyPath(path) }}
               sectionRef={(element) => {
                 if (element === null) sections.current.delete(path)
                 else sections.current.set(path, element)
@@ -494,13 +611,20 @@ export function ChangesTab({
             />
           )
         })}
+        {orphanRecords}
       </div>
     )
   }
-  const files = data === null ? [] : data.files
+  const navigator: ChangedFilesProps = {
+    files, state: treeState, t,
+    filter: (query) => { setTreeState(value => ({ ...value, query })) },
+    toggle: (path) => { setTreeState(value => ({ ...value, collapsed: { ...value.collapsed, [path]: value.collapsed[path] !== true } })) },
+    jump,
+  }
   // The toolbar collapses every file while any is expanded, as the files on screen show, and expands every file otherwise.
   const anyExpanded = files.some(file => chosen[file.path] ?? initial.has(file.path))
   const expansionLabel = t(anyExpanded ? 'diff.collapseAll' : 'diff.expandAll')
+  const treeAction = t(treePosition === 'left' ? 'diff.moveFileTreeRight' : treePosition === 'right' ? 'diff.hideFileTree' : 'diff.showFileTreeLeft')
   let additions = 0
   let deletions = 0
   for (const file of files) {
@@ -511,17 +635,19 @@ export function ChangesTab({
     <div className={css.root} data-forge-changes={source.kind}>
       {source.kind === 'local'
         ? <LocalHeader state={state} scope={scope} createChangeRequest={createChangeRequest} t={t} />
-        : <ChangeHeader url={source.url} entry={entry} openLink={openLink} t={t} />}
+        : <ChangeHeader url={source.url} entry={entry} openLink={openLink} reviewCount={reviewState.comments.length}
+          reviewDisabled={data === null} onReview={() => { setReviewOpen(true) }} t={t} />}
+      {!reviewOpen && reviewState.error !== null && <Notice>{t(reviewState.error === 'load' ? 'review.loadFailed' : 'review.saveFailed')}</Notice>}
+      {!reviewOpen && reviewState.uncertain !== null && !reviewBusy && source.kind === 'change' && <div className={css.reviewNotice} role="alert">
+        <span>{t('review.unknown')}</span>
+        {reviewState.uncertain.kind === 'comment' && <blockquote>{reviewState.uncertain.comment.body}</blockquote>}
+        <Button size="sm" variant="outline" onClick={() => { openLink(source.url) }}>{t('review.recheck')}</Button>
+        <Button size="sm" variant="outline" onClick={() => { queue.finish(false); setReviewError(null) }}>{t('review.confirmRetry')}</Button>
+      </div>}
+      {!reviewOpen && reviewError !== null && reviewState.uncertain === null && <Notice>{reviewError}</Notice>}
       <div className={css.toolbar}>
         {tab.visible && source.kind === 'local' && <ScopeMenu scope={scope} choose={(next) => { actions.scoped(tab.id, next) }} t={t} />}
-        {tab.visible && <FilesMenu
-          files={files}
-          jump={(path) => {
-            setChosen(value => ({ ...value, [path]: true }))
-            setWanted(path)
-          }}
-          t={t}
-        />}
+        {tab.visible && <ChangedFilesMenu {...navigator} visible />}
         {files.length > 0 && <span className={css.totals}><Counts file={{ additions, deletions, binary: false }} t={t} /></span>}
         <span className={css.tools}>
           <Tooltip label={t('diff.refresh')} side="bottom">
@@ -548,6 +674,15 @@ export function ChangesTab({
               {wrap ? <IconNowrapFillRegular /> : <IconWrapFillRegular />}
             </button>
           </Tooltip>
+          <span className={css.treeToggle}>
+            <Tooltip label={treeAction} side="bottom">
+              <button type="button" className={css.tool} aria-label={treeAction} aria-expanded={treePosition !== 'hidden'}
+                aria-controls={treeId} disabled={files.length === 0}
+                onClick={() => { setTreePosition(value => value === 'left' ? 'right' : value === 'right' ? 'hidden' : 'left') }}>
+                <IconWorkspaceTreeOutlineRegular />
+              </button>
+            </Tooltip>
+          </span>
         </span>
       </div>
       {data !== null && failed !== null && (
@@ -559,7 +694,11 @@ export function ChangesTab({
         <Notice>{t('diff.stale', { count: data.localAhead })}</Notice>
       )}
       {data?.kind === 'local' && data.omitted > 0 && <Notice>{t('diff.omitted', { count: data.omitted })}</Notice>}
-      {body}
+      {reviewForm}
+      <div className={css.body}>
+        {body}
+        {files.length > 0 && <FileTreePane {...navigator} id={treeId} position={treePosition} />}
+      </div>
     </div>
   )
 }
diff --git a/packages/experimental/client-ui-forge/src/client/DiffFile.tsx b/packages/experimental/client-ui-forge/src/client/DiffFile.tsx
index 6a67f99eab..a3c8d9a2ba 100644
--- a/packages/experimental/client-ui-forge/src/client/DiffFile.tsx
+++ b/packages/experimental/client-ui-forge/src/client/DiffFile.tsx
@@ -4,15 +4,23 @@
  * unchanged lines between them collapsed into rows that expand them.
  */
 
-import { useMemo, useState, type ReactNode } from 'react'
+import { useCallback, useEffect, useMemo, useRef, useState, type CSSProperties, type ReactNode } from 'react'
 import clsx from 'clsx'
+import { flushSync } from 'react-dom'
 import {
-  FileTypeIcon, IconChevronDownOutlineRegular, IconChevronsUpDownOutlineRegular, IconEllipsisOutlineRegular,
+  FileTypeIcon, IconChevronDownOutlineRegular, IconChevronsUpDownOutlineRegular, IconEllipsisOutlineRegular, IconPlusOutlineRegular,
+  Tooltip,
   languageForPath, Menu, MenuItemButton, useCodeHighlighter, type CodeHighlighter, type HighlightSpan,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
 import type { ForgeDiffFile } from '../types.ts'
 import { segmentsOf, splitRows, type DiffRow, type SplitCell, type SplitRow } from './diff-rows.ts'
+import { codeSideAt, readCodeSelection } from './code-selection.ts'
+import { reviewMatches, selectReviewLines, type ReviewSelection } from './review.ts'
+import { ReviewThread, useFileReview } from './ReviewThread.tsx'
+import type { FileReviewState } from './review-queue.ts'
+import { ReviewComposer, type ReviewActions } from './ReviewComposer.tsx'
+import reviewCss from './ReviewComposer.module.css'
 import { FileLabel } from './FileLabel.tsx'
 import type { ForgePanelKey, NS } from './locales.ts'
 import css from './ChangesTab.module.css'
@@ -34,6 +42,8 @@ export type DiffFileText = readonly string[] | 'loading' | undefined
 export interface DiffFileProps {
   /** Whether the owning tab is visible and may show temporary menus. */
   readonly visible: boolean
+  /** Comment destinations and the source being reviewed. */
+  readonly review?: ReviewActions
   /** The file and its hunks. */
   readonly file: ForgeDiffFile
   /** Whether the section shows its lines. */
@@ -62,8 +72,6 @@ export interface DiffFileProps {
   readonly tooltip: string
   /** Rows of the file's menu. */
   readonly actions: readonly DiffFileAction[]
-  /** Copy the repository-relative path from the file header. */
-  readonly onCopyPath: () => void
   /** Receives the section element, which scrolling to the file targets. */
   readonly sectionRef: (element: HTMLElement | null) => void
   /** Forge panel copy. */
@@ -112,91 +120,238 @@ function sideSpans(rows: readonly DiffRow[], side: 'old' | 'new', highlighter: C
   return new Map(numbered.map((line, index) => [line.no, highlighted[index] ?? []]))
 }
 
-function Code({ text, spans }: { readonly text: string; readonly spans: readonly HighlightSpan[] | undefined }): ReactNode {
+function Code({ text, spans, old, next }: {
+  readonly text: string
+  readonly spans: readonly HighlightSpan[] | undefined
+  readonly old: number | null
+  readonly next: number | null
+}): ReactNode {
   return (
-    <span className={css.text} data-diff-code={spans === undefined ? undefined : ''}>
+    <span className={css.text} data-review-code="" data-old-line={old ?? undefined} data-new-line={next ?? undefined} data-diff-code={spans === undefined ? undefined : ''}>
       {spans === undefined ? text : spans.map((span, index) => <span key={index} style={span.style}>{span.text}</span>)}
     </span>
   )
 }
 
-function Cell({ cell, spans }: { readonly cell: SplitCell | null; readonly spans: SideSpans }): ReactNode {
-  if (cell === null) return <span className={clsx(css.cell, css.empty)} />
-  return (
-    <span className={clsx(css.cell, css[cell.kind])}>
-      <span className={css.number}>{cell.no}</span>
-      <Code text={cell.text} spans={spans?.get(cell.no)} />
-    </span>
-  )
-}
-
 /** Whether a side-by-side row repeats an unchanged line or shows a change. */
 function pairKind(pair: SplitRow): 'context' | 'change' {
   return pair.left !== null && pair.left.kind === 'context' ? 'context' : 'change'
 }
 
 /** The hunks of one file with their collapsed and expanded unchanged lines. */
-function Lines({ file, text, open, onExpand, split, wrap, t }: Pick<DiffFileProps, 'file' | 'text' | 'open' | 'onExpand' | 'split' | 'wrap' | 't'>): ReactNode {
+function Lines({ file, text, open, onExpand, split, wrap, review, visible, comments, t }: Pick<DiffFileProps,
+  'file' | 'text' | 'open' | 'onExpand' | 'split' | 'wrap' | 'review' | 'visible' | 't'> & { readonly comments: FileReviewState }): ReactNode {
   const lines = typeof text === 'object' ? text : undefined
   const columns = split && file.additions > 0 && file.deletions > 0
+  const singleSide = file.status === 'added' ? 'R' : file.status === 'deleted' ? 'L' : null
+  let maximum = Math.max(1, lines?.length ?? 0, (lines?.length ?? 0) + file.deletions - file.additions)
+  for (const hunk of file.hunks) maximum = Math.max(maximum, hunk.oldStart + hunk.oldLines - 1, hunk.newStart + hunk.newLines - 1)
+  const style: CSSProperties & { '--forge-number-width': string } = { '--forge-number-width': `calc(${Math.max(2, String(maximum).length)}ch + 12px)` }
   const highlighter = useCodeHighlighter(languageForPath(file.path))
+  const [selection, setSelection] = useState<ReviewSelection | null>(null)
+  const root = useRef<HTMLDivElement>(null)
+  const origin = useRef<{ side: 'L' | 'R'; line: number } | null>(null)
+  const dragging = useRef<'gutter' | 'text' | null>(null)
+  const [selecting, setSelecting] = useState(false)
+  const [editing, setEditing] = useState(false)
+  const [nativeSide, setNativeSide] = useState<'L' | 'R' | null>(null)
+  const nativeSelection = useCallback((): void => {
+    if (editing || nativeSide === null || root.current === null || review === undefined) return
+    const selected = readCodeSelection(root.current, nativeSide)
+    if (selected === undefined) {
+      setSelection(null)
+      setNativeSide(null)
+      return
+    }
+    const comment = selectReviewLines(file, selected.side, selected.from, selected.to)
+    setSelection(previous => comment === undefined ? null
+      : previous?.comment.side === comment.side && previous.comment.startLine === comment.startLine
+        && previous.comment.endLine === comment.endLine
+        ? previous : { source: review.source, comment })
+  }, [editing, nativeSide, review, file])
+  useEffect(() => {
+    if (nativeSide === null || editing) return
+    const changed = (): void => { if (dragging.current === null) nativeSelection() }
+    document.addEventListener('selectionchange', changed)
+    return () => { document.removeEventListener('selectionchange', changed) }
+  }, [nativeSide, editing, nativeSelection])
+  useEffect(() => {
+    if (nativeSide === null) return
+    const copy = (event: ClipboardEvent): void => {
+      if (root.current === null || event.clipboardData === null
+        || (event.target instanceof Element && event.target.closest('input, textarea, [contenteditable="true"]') !== null)) return
+      const selected = readCodeSelection(root.current, nativeSide)
+      if (selected === undefined) return
+      event.preventDefault()
+      event.clipboardData.setData('text/plain', selected.text)
+    }
+    document.addEventListener('copy', copy)
+    return () => { document.removeEventListener('copy', copy) }
+  }, [nativeSide])
+  useEffect(() => {
+    if (!selecting) return
+    const finish = (): void => {
+      if (dragging.current === 'text') nativeSelection()
+      dragging.current = null
+      setSelecting(false)
+    }
+    window.addEventListener('pointerup', finish)
+    window.addEventListener('pointercancel', finish)
+    return () => {
+      window.removeEventListener('pointerup', finish)
+      window.removeEventListener('pointercancel', finish)
+    }
+  }, [selecting, nativeSelection])
   const prepared = useMemo(() => segmentsOf(file, lines, open).map((segment): Prepared => segment.kind === 'gap'
     ? segment
     : { ...segment, old: sideSpans(segment.rows, 'old', highlighter), new: sideSpans(segment.rows, 'new', highlighter) }), [file, lines, open, highlighter])
-  return (
-    <div className={css.code} data-split={columns ? '' : undefined} data-wrap={wrap ? '' : undefined}>
-      {prepared.map((segment, at) => {
-        if (segment.kind === 'gap') {
-          return (
-            <button
-              key={`gap-${segment.index}`}
-              type="button"
-              className={css.gap}
-              disabled={text === 'loading'}
-              data-forge-diff-gap={segment.index}
-              onClick={() => { onExpand(segment.index) }}
-            >
-              <IconChevronsUpDownOutlineRegular size={12} />
-              {segment.count === null ? t('diff.unchangedRest') : t('diff.unchanged', { count: segment.count.toLocaleString('en-US') })}
-            </button>
-          )
+  const choose = (side: 'L' | 'R', line: number, extend: boolean): void => {
+    if (review === undefined || editing) return
+    const from = extend && origin.current?.side === side ? origin.current.line : line
+    const comment = selectReviewLines(file, side, from, line)
+    if (comment === undefined) return
+    if (!extend || origin.current?.side !== side) origin.current = { side, line }
+    setSelection({ source: review.source, comment })
+  }
+  const selected = (side: 'L' | 'R', line: number | null): boolean => line !== null && selection !== null
+    && selection.comment.side === side && line >= selection.comment.startLine && line <= selection.comment.endLine
+  const number = (side: 'L' | 'R', line: number | null): ReactNode => {
+    if (line === null || review === undefined || !file.hunks.some((hunk) => {
+      const start = side === 'L' ? hunk.oldStart : hunk.newStart
+      return line >= start && line < start + (side === 'L' ? hunk.oldLines : hunk.newLines)
+    })) {
+      return <span className={css.number}>{line ?? ''}</span>
+    }
+    return <span className={clsx(css.number, reviewCss.gutter)}>
+      <button type="button" className={reviewCss.line}
+        aria-label={t('review.selectLine', { line: `${side}${line}` })} aria-pressed={selected(side, line)}
+        onPointerDown={(event) => {
+          if (event.button !== 0 || editing) return
+          event.preventDefault()
+          window.getSelection()?.removeAllRanges()
+          setNativeSide(null)
+          dragging.current = 'gutter'
+          setSelecting(true)
+          choose(side, line, event.shiftKey)
+        }}
+        onPointerEnter={(event) => { if (dragging.current === 'gutter' && origin.current?.side === side && event.buttons === 1) choose(side, line, true) }}
+        onClick={(event) => {
+          if (event.detail !== 0) return
+          window.getSelection()?.removeAllRanges()
+          setNativeSide(null)
+          choose(side, line, event.shiftKey)
+        }}>{line}</button>
+      {!selecting && !editing && selection?.comment.side === side && selection.comment.endLine === line && (
+        <Tooltip label={t('review.addComment')} portal>
+          <button type="button" className={reviewCss.add} aria-label={t('review.addComment')}
+            onPointerDown={(event) => { event.preventDefault() }} onClick={() => { setEditing(true) }}>
+            <IconPlusOutlineRegular size={14} />
+          </button>
+        </Tooltip>
+      )}
+    </span>
+  }
+  const cell = (value: SplitCell | null, spans: SideSpans, side: 'L' | 'R'): ReactNode => value === null
+    ? <span className={clsx(css.cell, css.empty)} data-diff-side={side} />
+    : <span className={clsx(css.cell, css[value.kind], selected(side, value.no) && (editing || nativeSide === null) && reviewCss.selected)}
+      data-diff-side={side}>
+      {number(side, value.no)}<Code text={value.text} spans={spans?.get(value.no)} old={side === 'L' ? value.no : null} next={side === 'R' ? value.no : null} />
+    </span>
+  const rows: ReactNode[] = []
+  let inserted = false
+  const editor = review === undefined || selection === null || !editing ? null : <ReviewComposer key="comment" selection={selection} visible={visible} split={columns}
+    actions={review} close={() => {
+      const native = window.getSelection()
+      if (root.current?.contains(native?.anchorNode ?? null) === true) native?.removeAllRanges()
+      setSelection(null)
+      setEditing(false)
+      setNativeSide(null)
+      origin.current = null
+    }} t={t} />
+  const remaining = new Set(comments.threads)
+  const appendComments = (old: number | null, next: number | null): void => {
+    if (review === undefined) return
+    for (const thread of remaining) {
+      const comment = thread.selection.comment
+      if ((comment.side === 'L' ? old : next) !== comment.endLine || !reviewMatches(thread.selection, review.source, file)) continue
+      rows.push(<ReviewThread key={`record-${thread.key}`} thread={thread} actions={review} locked={comments.locked} outdated={false} split={columns} t={t} />)
+      remaining.delete(thread)
+    }
+  }
+  const endsAt = (old: number | null, next: number | null): boolean => selection !== null
+    && (selection.comment.side === 'L' ? old : next) === selection.comment.endLine
+  for (const [at, segment] of prepared.entries()) {
+    if (segment.kind === 'gap') {
+      rows.push(<button key={`gap-${segment.index}`} type="button" className={css.gap} disabled={text === 'loading'}
+        data-forge-diff-gap={segment.index} onClick={() => { onExpand(segment.index) }}>
+        <IconChevronsUpDownOutlineRegular size={12} />
+        {segment.count === null ? t('diff.unchangedRest') : t('diff.unchanged', { count: segment.count.toLocaleString('en-US') })}
+      </button>)
+    } else if (columns) {
+      for (const [index, pair] of splitRows(segment.rows).entries()) {
+        rows.push(<div key={`${at}-${index}`} className={css.pair} data-diff-pair={pairKind(pair)}>
+          {cell(pair.left, segment.old, 'L')}{cell(pair.right, segment.new, 'R')}
+        </div>)
+        if (!inserted && endsAt(pair.left?.no ?? null, pair.right?.no ?? null)) {
+          rows.push(editor)
+          inserted = true
         }
-        if (columns) {
-          return splitRows(segment.rows).map((pair, index) => (
-            <div key={`${at}-${index}`} className={css.pair} data-diff-pair={pairKind(pair)}>
-              <Cell cell={pair.left} spans={segment.old} />
-              <Cell cell={pair.right} spans={segment.new} />
-            </div>
-          ))
+        appendComments(pair.left?.no ?? null, pair.right?.no ?? null)
+      }
+    } else {
+      for (const [index, row] of segment.rows.entries()) {
+        rows.push(<div key={`${at}-${index}`} className={clsx(css.line, css[row.kind], (selected('L', row.old) || selected('R', row.new)) && (editing || nativeSide === null) && reviewCss.selected)} data-diff-line={row.kind}>
+          {singleSide !== 'R' && number('L', row.old)}{singleSide !== 'L' && number('R', row.new)}<span className={css.sign}>{SIGN[row.kind]}</span>
+          <Code text={row.text} old={row.old} next={row.new} spans={row.kind === 'del' ? segment.old?.get(row.old) : segment.new?.get(row.new)} />
+        </div>)
+        if (!inserted && endsAt(row.old, row.new)) {
+          rows.push(editor)
+          inserted = true
         }
-        return segment.rows.map((row, index) => (
-          <div key={`${at}-${index}`} className={clsx(css.line, css[row.kind])} data-diff-line={row.kind}>
-            <span className={css.number}>{row.old ?? ''}</span>
-            <span className={css.number}>{row.new ?? ''}</span>
-            <span className={css.sign}>{SIGN[row.kind]}</span>
-            <Code text={row.text} spans={row.kind === 'del' ? segment.old?.get(row.old) : segment.new?.get(row.new)} />
-          </div>
-        ))
-      })}
-    </div>
-  )
+        appendComments(row.old, row.new)
+      }
+    }
+  }
+  if (review !== undefined) for (const thread of remaining) {
+    rows.push(<ReviewThread key={`record-${thread.key}`} thread={thread} actions={review} locked={comments.locked} outdated split={false} t={t} />)
+  }
+  if (!inserted) rows.push(editor)
+  return <div ref={root} className={css.code} style={style} data-single-side={singleSide ?? undefined} data-split={columns ? '' : undefined} data-wrap={wrap ? '' : undefined}
+    data-native-side={nativeSide ?? undefined}
+    onPointerDownCapture={(event) => {
+      if (event.button !== 0 || !(event.target instanceof Node)) return
+      const side = codeSideAt(event.currentTarget, event.target)
+      if (side === undefined) return
+      if (!event.shiftKey || nativeSide !== side) window.getSelection()?.removeAllRanges()
+      if (!editing) dragging.current = 'text'
+      // The chosen column must allow selection before the browser starts its native text range.
+      flushSync(() => {
+        setNativeSide(side)
+        if (editing) return
+        setSelection(null)
+        setSelecting(true)
+      })
+    }}>{rows}</div>
 }
 
 function Body(props: DiffFileProps): ReactNode {
-  const { file, large, revealed, onReveal, t } = props
-  if (file.binary) return <p className={css.fileNote}>{t('diff.binary')}</p>
-  if (file.oversized) return <p className={css.fileNote}>{t('diff.fileTooLarge')}</p>
-  if (file.hunks.length === 0) return null
+  const { file, large, revealed, onReveal, review, t } = props
+  const comments = useFileReview(review, file.path)
+  const records = review === undefined ? null : comments.threads.map(thread => <ReviewThread key={thread.key} thread={thread}
+    actions={review} locked={comments.locked} outdated={!reviewMatches(thread.selection, review.source, file)} split={false} t={t} />)
+  if (file.binary) return <><p className={css.fileNote}>{t('diff.binary')}</p>{records}</>
+  if (file.oversized) return <><p className={css.fileNote}>{t('diff.fileTooLarge')}</p>{records}</>
+  if (file.hunks.length === 0) return records
   if (large && !revealed) {
     // A large file starts as one collapsed strip, drawn and opened like the collapsed unchanged lines.
     return (
-      <button type="button" className={css.gap} onClick={onReveal}>
+      <><button type="button" className={css.gap} onClick={onReveal}>
         <IconChevronsUpDownOutlineRegular size={12} />
         {t('diff.largeCollapsed', { count: (file.additions + file.deletions).toLocaleString('en-US') })}
-      </button>
+      </button>{records}</>
     )
   }
-  return <Lines {...props} />
+  return <Lines {...props} comments={comments} />
 }
 
 /** File actions live only while their owning tab is visible. */
@@ -248,7 +403,7 @@ function FileMenu({ name, actions, t }: {
  * @returns the file section.
  */
 export function DiffFile(props: DiffFileProps): ReactNode {
-  const { file, expanded, onToggle, badge, tooltip, actions, onCopyPath, sectionRef, t } = props
+  const { file, expanded, onToggle, badge, tooltip, actions, sectionRef, t } = props
   const name = file.path.slice(file.path.lastIndexOf('/') + 1)
   return (
     <section ref={sectionRef} className={css.file} data-forge-diff-file={file.path} data-expanded={expanded ? '' : undefined}>
@@ -263,9 +418,9 @@ export function DiffFile(props: DiffFileProps): ReactNode {
           <IconChevronDownOutlineRegular size={14} className={css.chevron} />
         </button>
         <FileTypeIcon path={file.path} size={16} className={css.fileIcon} />
-        <button type="button" className={css.filePath} aria-label={`${t('diff.copyPath')}: ${file.path}`} onClick={onCopyPath}>
+        <span className={css.filePath}>
           <FileLabel path={file.path} tooltip={tooltip} />
-        </button>
+        </span>
         <span className={css.fileSpacer} data-forge-path-spacer="" />
         {badge !== '' && <span className={css.badge}>{badge}</span>}
         {!file.binary && <Counts file={file} t={t} />}
diff --git a/packages/experimental/client-ui-forge/src/client/FileLabel.module.css b/packages/experimental/client-ui-forge/src/client/FileLabel.module.css
index dcee927f92..add13b56ed 100644
--- a/packages/experimental/client-ui-forge/src/client/FileLabel.module.css
+++ b/packages/experimental/client-ui-forge/src/client/FileLabel.module.css
@@ -1,5 +1,7 @@
 /* A changed file's name, then its directory in smaller subdued type. */
 .label {
+  /* Keep the hidden accessible path inside the file's own scroll container. */
+  position: relative;
   display: flex;
   min-width: 0;
 }
diff --git a/packages/experimental/client-ui-forge/src/client/FileTreePane.module.css b/packages/experimental/client-ui-forge/src/client/FileTreePane.module.css
new file mode 100644
index 0000000000..fb8692efc9
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/FileTreePane.module.css
@@ -0,0 +1,10 @@
+/* Container width keeps navigation separate from the compact files menu. */
+.pane { display: none; position: relative; flex: none; min-width: 0; min-height: 0; box-sizing: border-box; border-inline-start: 0.5px solid var(--dsw-alias-border-l3); }
+.pane[hidden] { display: none; }
+.pane[data-position='left'] { order: -1; border-inline-start: 0; border-inline-end: 0.5px solid var(--dsw-alias-border-l3); }
+.navigation { height: 100%; min-width: 0; overflow-y: auto; }
+.resize { position: absolute; inset-block: 0; inset-inline-start: -4px; width: 8px; z-index: 2; cursor: col-resize; touch-action: none; user-select: none; }
+.resize::after { content: ''; position: absolute; inset-block: 0; inset-inline-start: 3px; width: 2px; }
+.pane[data-position='left'] .resize { inset-inline-start: auto; inset-inline-end: -4px; }
+.resize:focus-visible::after { background: var(--dsw-alias-state-business-primary); }
+@media (hover: hover) { .resize:hover::after { background: var(--dsw-alias-state-business-primary); } }
diff --git a/packages/experimental/client-ui-forge/src/client/FileTreePane.tsx b/packages/experimental/client-ui-forge/src/client/FileTreePane.tsx
new file mode 100644
index 0000000000..b055655814
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/FileTreePane.tsx
@@ -0,0 +1,76 @@
+/** Resizable file navigation; width belongs to the mounted tab and survives hiding the pane. */
+
+import clsx from 'clsx'
+import changesCss from './ChangesTab.module.css'
+import { useLayoutEffect, useRef, useState, type ReactNode } from 'react'
+import { ChangedFiles, type ChangedFilesProps } from './ChangedFiles.tsx'
+import css from './FileTreePane.module.css'
+
+const MIN_WIDTH = 200
+const MAX_WIDTH = 600
+const DIFF_MIN_WIDTH = 320
+
+/** Placement of a tab's file navigator; hiding it retains its viewing choices. */
+export type FileTreePosition = 'right' | 'left' | 'hidden'
+
+/**
+ * Render a keyboard- and pointer-resizable tree beside the diff.
+ * @param props - tree rows, pane position, and the toggle's controlled element id.
+ * @returns the bounded pane and its resize separator.
+ */
+export function FileTreePane({ position, id, ...props }: ChangedFilesProps & {
+  readonly position: FileTreePosition
+  readonly id: string
+}): ReactNode {
+  const pane = useRef<HTMLDivElement>(null)
+  const drag = useRef<{ pointer: number; x: number; width: number } | null>(null)
+  const [width, setWidth] = useState(240)
+  const [maximum, setMaximum] = useState(MAX_WIDTH)
+  useLayoutEffect(() => {
+    const parent = pane.current?.parentElement
+    if (parent === undefined || parent === null) return
+    const measure = (): void => {
+      const available = parent.clientWidth
+      // A retained tab has no measurable width while its session or pane is hidden.
+      if (available === 0) return
+      setMaximum(Math.max(MIN_WIDTH, Math.min(MAX_WIDTH, available - DIFF_MIN_WIDTH)))
+    }
+    measure()
+    const observer = new ResizeObserver(measure)
+    observer.observe(parent)
+    return () => { observer.disconnect() }
+  }, [])
+  const shown = Math.min(width, maximum)
+  const direction = position === 'left' ? 1 : -1
+  const resize = (next: number): void => { setWidth(Math.round(Math.max(MIN_WIDTH, Math.min(maximum, next)))) }
+  return <div ref={pane} className={clsx(css.pane, changesCss.treePane)} data-position={position} hidden={position === 'hidden'} style={{ width: shown }}>
+    <div className={css.resize} role="separator" tabIndex={0} aria-label={props.t('diff.resizeFileTree')}
+      aria-orientation="vertical" aria-controls={id} aria-valuemin={MIN_WIDTH} aria-valuemax={maximum} aria-valuenow={shown}
+      onPointerDown={(event) => {
+        if (event.button !== 0) return
+        event.preventDefault()
+        event.currentTarget.setPointerCapture(event.pointerId)
+        drag.current = { pointer: event.pointerId, x: event.clientX, width: shown }
+      }}
+      onPointerMove={(event) => {
+        const active = drag.current
+        if (active?.pointer === event.pointerId) resize(active.width + direction * (event.clientX - active.x))
+      }}
+      onPointerUp={(event) => {
+        const active = drag.current
+        if (active?.pointer !== event.pointerId) return
+        resize(active.width + direction * (event.clientX - active.x))
+        drag.current = null
+        event.currentTarget.releasePointerCapture(event.pointerId)
+      }}
+      onPointerCancel={() => { drag.current = null }} onLostPointerCapture={() => { drag.current = null }}
+      onKeyDown={(event) => {
+        if (!['ArrowLeft', 'ArrowRight', 'Home', 'End'].includes(event.key)) return
+        event.preventDefault()
+        resize(event.key === 'Home' ? MIN_WIDTH : event.key === 'End' ? maximum : shown + direction * (event.key === 'ArrowRight' ? 20 : -20))
+      }} />
+    <nav id={id} className={css.navigation} aria-label={props.t('diff.allFiles', { count: props.files.length })}>
+      <ChangedFiles {...props} />
+    </nav>
+  </div>
+}
diff --git a/packages/experimental/client-ui-forge/src/client/ForgeTab.module.css b/packages/experimental/client-ui-forge/src/client/ForgeTab.module.css
index ddebe94967..19d60ee8fe 100644
--- a/packages/experimental/client-ui-forge/src/client/ForgeTab.module.css
+++ b/packages/experimental/client-ui-forge/src/client/ForgeTab.module.css
@@ -388,16 +388,18 @@
 /* Expanded facts, one row each: an icon under the glyph, the label, the value,
    and a chevron on a row that opens something. */
 .rows {
-  display: flex;
-  flex-direction: column;
-  gap: 2px;
+  display: grid;
+  /* Edge tracks include each row's padding; labels retain their Chinese width and grow for longer translations. */
+  grid-template-columns: 24px minmax(32px, max-content) minmax(0, 1fr) 22px;
+  gap: 2px 10px;
   padding: 4px 6px 6px;
   border-top: 0.5px solid var(--dsw-alias-border-l2);
 }
 
 .row {
   display: grid;
-  grid-template-columns: 16px 32px minmax(0, 1fr) 12px;
+  grid-column: 1 / -1;
+  grid-template-columns: subgrid;
   align-items: center;
   column-gap: 10px;
   box-sizing: border-box;
@@ -449,6 +451,7 @@
   align-items: center;
   gap: 6px;
   min-width: 0;
+  overflow-wrap: anywhere;
 }
 
 .rowValue[data-tone='error'] {
@@ -469,7 +472,9 @@
 
 /* The checks menu anchors to the whole row. */
 .checksAnchor {
-  display: block;
+  display: grid;
+  grid-column: 1 / -1;
+  grid-template-columns: subgrid;
 }
 
 .checksList {
diff --git a/packages/experimental/client-ui-forge/src/client/ForgeTab.tsx b/packages/experimental/client-ui-forge/src/client/ForgeTab.tsx
index 55e115fadc..e1fb4e7d4a 100644
--- a/packages/experimental/client-ui-forge/src/client/ForgeTab.tsx
+++ b/packages/experimental/client-ui-forge/src/client/ForgeTab.tsx
@@ -41,6 +41,8 @@ export interface ForgeTabInjected {
   readonly markReady: (entry: ForgePanelChangeRequest) => Promise<void>
   /** Merge a change request as `request` describes; settles once the outcome is reported. */
   readonly merge: (entry: ForgePanelChangeRequest, request: MergeRequest) => Promise<void>
+  /** Read the complete checks of an opened change request. */
+  readonly readChecks: NonNullable<ChangeRequestActions['readChecks']>
   /** Check the removed worktree of the Session out again, reporting the outcome. */
   readonly restore: () => void
   /** Open a URL outside the app. */
@@ -155,7 +157,8 @@ function SignIn({ state, copyText, t }: {
  * @returns the tab body.
  */
 export function ForgeTab({
-  useTabInfo, sessionId, usePanel, useHost, useLocale, reconnect, refresh, remove, markReady, merge, restore, openLink, copyText, copyPath,
+  useTabInfo, sessionId, usePanel, useHost, useLocale, reconnect, refresh, remove, markReady, merge, readChecks, restore,
+  openLink, copyText, copyPath,
   reportVisible, createChangeRequest, t,
 }: ForgeTabProps): ReactNode {
   const snapshot = usePanel(current => current)
@@ -186,7 +189,7 @@ export function ForgeTab({
     void refresh().finally(() => { setRefreshing(false) })
   }
   const actions: ChangeRequestActions = {
-    openLink, copyLink: copyText, retry: startRefresh, remove, markReady, merge,
+    openLink, copyLink: copyText, retry: startRefresh, remove, markReady, merge, readChecks,
     viewChanges: (entry) => { viewChanges({ kind: 'change', url: entry.url }) },
   }
   const local = state.local !== null && state.local.files.length > 0 && openChangeRequestOf(state) === undefined ? state.local : null
diff --git a/packages/experimental/client-ui-forge/src/client/ReviewComposer.module.css b/packages/experimental/client-ui-forge/src/client/ReviewComposer.module.css
new file mode 100644
index 0000000000..16b7d752fd
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/ReviewComposer.module.css
@@ -0,0 +1,29 @@
+/* Inline review forms use the same field, action, and badge treatments as settings and conversation controls. */
+.root, .thread { box-sizing: border-box; width: calc(100% - 20px); max-width: 680px; margin: 10px; padding: 12px; border: 0.5px solid var(--dsw-alias-border-l3); border-radius: var(--dsw-radius-md); background: var(--dsw-alias-bg-layer-1); color: var(--dsw-alias-label-primary); font: var(--dsw-font-xs-13); font-family: Inter, var(--dsw-font-family); white-space: normal; }
+.root { background: var(--dsw-alias-bg-layer-2); border-radius: var(--dsw-radius-lg); }
+.root:focus-within { border-color: var(--dsw-alias-border-l4); }
+.root[data-split][data-side="R"], .thread[data-split][data-side="R"] { margin-inline-start: clamp(10px, calc(100% - 700px), calc(50% + 10px)); }
+.title { margin-bottom: 12px; color: var(--dsw-alias-label-secondary); overflow-wrap: anywhere; }
+/* Fixed-size textarea layout stays local during typing; native resizing can still change its outer height. */
+.input { display: block; box-sizing: border-box; width: 100%; height: 88px; min-height: 88px; contain: strict; padding: 10px 12px; resize: vertical; border: 0.5px solid var(--dsw-alias-border-l4); border-radius: var(--dsw-radius-md); outline: none; background: var(--dsw-alias-bg-layer-3); color: var(--dsw-alias-label-primary); font: inherit; }
+.input::placeholder { color: var(--dsw-alias-label-dimmed); }
+.input:focus { border-color: var(--dsw-alias-state-business-primary); }
+.root .input { padding: 0; border: 0; border-radius: 0; background: transparent; }
+.actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 8px; padding-top: 10px; margin-top: 10px; border-top: 0.5px solid var(--dsw-alias-border-l2); }
+.cancel { margin-inline-end: auto; }
+.error { margin-top: 8px; color: var(--dsw-alias-state-error-primary); overflow-wrap: anywhere; }
+.gitAction { display: inline-flex; flex: none; align-items: stretch; }
+.gitMain { border-start-end-radius: 0; border-end-end-radius: 0; }
+.gitArrow { width: 30px; padding: 0; border-start-start-radius: 0; border-end-start-radius: 0; border-inline-start: 0.5px solid color-mix(in srgb, var(--dsw-alias-label-primary-foreground) 25%, transparent); }
+.threadHeader { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
+.author { font-weight: 500; }
+.range { color: var(--dsw-alias-label-secondary); font-size: 12px; }
+.commentBody { white-space: pre-wrap; overflow-wrap: anywhere; }
+.threadActions { display: flex; flex-wrap: wrap; gap: 4px; margin: 8px -8px -4px; }
+.gutter { position: relative; }
+.line { display: block; width: 100%; height: 100%; padding: 0; color: inherit; text-align: inherit; cursor: pointer; border: 0; border-radius: 0; background: transparent; font: inherit; user-select: none; touch-action: pan-y; }
+.selected { background: var(--dsw-alias-interactive-bg-hover); outline: 1px solid var(--dsw-alias-border-l2); outline-offset: -1px; }
+@media (hover: hover) { .line:hover { color: var(--dsw-alias-state-business-primary); } }
+@media (pointer: coarse) { .input { font-size: 16px; } .line { min-height: 28px; } }
+
+.add { position: absolute; inset-inline-start: 2px; top: 50%; transform: translateY(-50%); display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; padding: 0; border: 0; border-radius: var(--dsw-radius-xs); background: var(--dsw-alias-button-primary-fill); color: var(--dsw-alias-label-primary-foreground); cursor: pointer; user-select: none; }
diff --git a/packages/experimental/client-ui-forge/src/client/ReviewComposer.tsx b/packages/experimental/client-ui-forge/src/client/ReviewComposer.tsx
new file mode 100644
index 0000000000..58c835974a
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/ReviewComposer.tsx
@@ -0,0 +1,123 @@
+/** Plain-text comment editor for a frozen selection in either review tab. */
+
+import { useEffect, useRef, useState, type ReactNode } from 'react'
+import clsx from 'clsx'
+import { Button, IconChevronDownOutlineRegular, Menu, MenuItemButton } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { ReviewQueue } from './review-queue.ts'
+import type { ReviewSelection, ReviewSource } from './review.ts'
+import type { NS } from './locales.ts'
+import css from './ReviewComposer.module.css'
+
+/** Actions supplied by the owning changes tab. */
+export interface ReviewActions {
+  /** The source currently displayed; selecting a range freezes it. */
+  readonly source: ReviewSource
+  /** Browser records shared by the changes tab. */
+  readonly records?: ReviewQueue
+  /** Whether another comment already started a pending review. */
+  readonly reviewStarted?: boolean
+  /** Open the confirmed publication URL. */
+  readonly openLink?: (url: string) => void
+  /** A write is running or its outcome still needs confirmation. */
+  readonly publishingBlocked?: boolean
+  /** Append an atomic quote without sending the Agent a message. */
+  readonly addToInput: (selection: ReviewSelection) => boolean
+  /** Retain a new comment after its quote was accepted. */
+  readonly onQuoted?: (selection: ReviewSelection) => void
+  /** Publish one comment; an error string preserves the editor. */
+  readonly publish?: (selection: ReviewSelection) => Promise<string | undefined>
+  /** Keep one comment for the final review; false preserves the editor. */
+  readonly queue?: (selection: ReviewSelection) => boolean
+}
+
+function GitHubAction({ disabled, busy, started, queue, publish, t }: PropsLocale<typeof NS> & {
+  readonly disabled: boolean
+  readonly busy: boolean
+  readonly started: boolean
+  readonly queue: () => void
+  readonly publish: (() => void) | undefined
+}): ReactNode {
+  const [open, setOpen] = useState(false)
+  return <div className={css.gitAction}>
+    <Button size="sm" variant="primary" className={clsx(css.gitMain)} disabled={disabled} onClick={queue}>
+      {t(busy ? 'review.publishing' : started ? 'review.queue' : 'review.startReview')}
+    </Button>
+    {publish !== undefined && <Menu open={open && !disabled} portal dense align="end" autoFocus onClose={() => { setOpen(false) }}
+      anchor={<Button size="sm" variant="primary" className={clsx(css.gitArrow)} disabled={disabled} aria-haspopup="menu" aria-expanded={open && !disabled}
+        aria-label={t('review.githubActions')} onClick={() => { setOpen(value => !value) }}><IconChevronDownOutlineRegular size={14} /></Button>}>
+      <MenuItemButton onSelect={() => { setOpen(false); publish() }}>{t('review.publish')}</MenuItemButton>
+    </Menu>}
+  </div>
+}
+
+/**
+ * Render the line range, plain-text editor, and explicitly named destinations.
+ * @param props - frozen selection, actions, cancellation, and localized copy.
+ * @returns the inline comment form.
+ */
+export function ReviewComposer({ selection, actions, close, visible = true, split = false, t }: PropsLocale<typeof NS> & {
+  readonly visible?: boolean
+  readonly split?: boolean
+  readonly selection: ReviewSelection
+  readonly actions: ReviewActions
+  readonly close: () => void
+}): ReactNode {
+  // The native field owns draft text; only action availability invalidates the surrounding diff's React tree.
+  const body = useRef(selection.comment.body)
+  const [empty, setEmpty] = useState(body.current.trim() === '')
+  const [busy, setBusy] = useState(false)
+  const [error, setError] = useState<string | null>(null)
+  const running = useRef(false)
+  const input = useRef<HTMLTextAreaElement>(null)
+  useEffect(() => { input.current?.focus() }, [])
+  const comment = (): ReviewSelection => ({ ...selection, comment: { ...selection.comment, body: body.current } })
+  const range = `${selection.comment.side}${selection.comment.startLine}${selection.comment.endLine === selection.comment.startLine ? '' : `–${selection.comment.endLine}`}`
+  const publish = async (): Promise<void> => {
+    if (running.current || actions.publish === undefined) return
+    running.current = true
+    setBusy(true)
+    setError(null)
+    try {
+      const failure = await actions.publish(comment())
+      if (failure === undefined) close()
+      else setError(failure)
+    } catch (_error) {
+      setError(t('review.unknown'))
+    } finally {
+      running.current = false
+      setBusy(false)
+    }
+  }
+  return (
+    <section className={css.root} data-side={selection.comment.side} data-split={split ? '' : undefined} aria-label={t('review.range', { range })} data-forge-comment="">
+      <div className={css.title}>{t('review.range', { range })}</div>
+      <textarea ref={input} className={css.input} rows={3} defaultValue={selection.comment.body} disabled={busy}
+        aria-label={t('review.comment')} placeholder={t('review.comment')}
+        onChange={(event) => {
+          body.current = event.target.value
+          const nextEmpty = body.current.trim() === ''
+          if (nextEmpty !== empty) setEmpty(nextEmpty)
+          if (error !== null) setError(null)
+        }} />
+      {error !== null && <div className={css.error} role="alert">{error}</div>}
+      <div className={css.actions}>
+        <Button size="sm" className={clsx(css.cancel)} disabled={busy} onClick={close}>{t('review.cancel')}</Button>
+        <Button size="sm" variant={actions.queue === undefined ? 'primary' : 'outline'} disabled={busy || empty} onClick={() => {
+          const selected = comment()
+          if (actions.addToInput(selected)) { actions.onQuoted?.(selected); close() }
+          else setError(t('review.inputFailed'))
+        }}>{t('review.addToInput')}</Button>
+        {visible && actions.queue !== undefined && <GitHubAction
+          disabled={busy || actions.publishingBlocked === true || empty} busy={busy} started={actions.reviewStarted === true}
+          queue={() => {
+            if (actions.queue?.(comment()) === true) close()
+            else setError(t('review.saveFailed'))
+          }} publish={actions.publish === undefined ? undefined : () => { void publish() }} t={t} />}
+        {actions.queue === undefined && actions.publish !== undefined && <Button size="sm" variant="primary"
+          disabled={busy || actions.publishingBlocked === true || empty} onClick={() => { void publish() }}>{t('review.publish')}</Button>}
+
+      </div>
+    </section>
+  )
+}
diff --git a/packages/experimental/client-ui-forge/src/client/ReviewThread.tsx b/packages/experimental/client-ui-forge/src/client/ReviewThread.tsx
new file mode 100644
index 0000000000..f94f6a77f9
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/ReviewThread.tsx
@@ -0,0 +1,78 @@
+/** Inline comment records and editing of a pending review at its captured code location. */
+
+import { useCallback, useState, useSyncExternalStore, type ReactNode } from 'react'
+import { Button, Tag } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { ReviewActions } from './ReviewComposer.tsx'
+import { EMPTY_FILE_REVIEW, type FileReviewState, type ReviewThread as Thread } from './review-queue.ts'
+import type { NS } from './locales.ts'
+import css from './ReviewComposer.module.css'
+
+const noSubscription = (): (() => void) => () => {}
+
+/**
+ * Subscribe only to comments that belong to the displayed file and source.
+ * @param actions - review actions and their browser store.
+ * @param path - displayed file path.
+ * @returns stable file-scoped comments and write availability.
+ */
+export function useFileReview(actions: ReviewActions | undefined, path: string): FileReviewState {
+  const read = useCallback(() => actions?.records?.fileComments(path, actions.source) ?? EMPTY_FILE_REVIEW,
+    [actions?.records, actions?.source, path])
+  return useSyncExternalStore(actions?.records?.subscribe ?? noSubscription, read)
+}
+
+/**
+ * Render a saved comment at its line, with pending edits kept in the browser queue.
+ * @param props - record, edit availability, source actions, and localized copy.
+ * @returns one compact inline comment card.
+ */
+export function ReviewThread({ thread, actions, locked, outdated, split, t }: PropsLocale<typeof NS> & {
+  readonly thread: Thread
+  readonly actions: ReviewActions
+  readonly locked: boolean
+  readonly outdated: boolean
+  readonly split: boolean
+}): ReactNode {
+  const [editing, setEditing] = useState(false)
+  const [body, setBody] = useState(thread.selection.comment.body)
+  const [error, setError] = useState<string | null>(null)
+  const comment = thread.selection.comment
+  const quoted = editing && thread.kind === 'pending' ? { ...thread.selection, comment: { ...comment, body } } : thread.selection
+  const range = `${comment.side}${comment.startLine}${comment.endLine === comment.startLine ? '' : `–${comment.endLine}`}`
+  const status = thread.kind === 'pending' ? 'review.pending' : thread.kind === 'published' ? 'review.published' : 'review.quoted'
+  const save = (): boolean => actions.records?.editThread(thread.key, body) === true
+  return <section className={css.thread} data-forge-review-thread={thread.kind} data-side={comment.side}
+    data-split={split ? '' : undefined} aria-label={t('review.range', { range })}>
+    <div className={css.threadHeader}>
+      <span className={css.author}>{t('review.yourComment')}</span>
+      <span className={css.range}>{range}</span>
+      <Tag tone="neutral">{t(outdated ? 'review.outdated' : status)}</Tag>
+    </div>
+    {editing && thread.kind === 'pending'
+      ? <textarea autoFocus className={css.input} rows={3} value={body} disabled={locked} aria-label={t('review.comment')}
+        onChange={(event) => {
+          setBody(event.target.value)
+          if (actions.records?.editThread(thread.key, event.target.value) === true) setError(null)
+          else setError(t('review.saveFailed'))
+        }} />
+      : <div className={css.commentBody}>{comment.body}</div>}
+    {error !== null && <div className={css.error} role="alert">{error}</div>}
+    <div className={css.threadActions}>
+      <Button size="sm" disabled={quoted.comment.body.trim() === ''} onClick={() => {
+        if (!actions.addToInput(quoted)) setError(t('review.inputFailed'))
+      }}>{t('review.addToInput')}</Button>
+      {thread.kind === 'pending' && <>
+        {editing
+          ? <Button size="sm" disabled={locked || body.trim() === ''} onClick={() => {
+            if (save()) { setEditing(false); setError(null) } else setError(t('review.saveFailed'))
+          }}>{t('review.done')}</Button>
+          : <Button size="sm" disabled={locked} onClick={() => { setBody(comment.body); setEditing(true) }}>{t('review.edit')}</Button>}
+        <Button size="sm" disabled={locked} onClick={() => {
+          if (actions.records?.editThread(thread.key, null) !== true) setError(t('review.saveFailed'))
+        }}>{t('review.remove')}</Button>
+      </>}
+      {thread.kind === 'published' && actions.openLink !== undefined && <Button size="sm" onClick={() => { actions.openLink?.(thread.url) }}>{t('review.recheck')}</Button>}
+    </div>
+  </section>
+}
diff --git a/packages/experimental/client-ui-forge/src/client/SubmitReview.module.css b/packages/experimental/client-ui-forge/src/client/SubmitReview.module.css
new file mode 100644
index 0000000000..7c3efe3b93
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/SubmitReview.module.css
@@ -0,0 +1,15 @@
+/* Review submission follows the settings dialogs' field and footer spacing. */
+.modal { width: min(520px, 100%); max-height: 100%; }
+.content { min-height: 0; overflow-y: auto; }
+.form { display: flex; flex-direction: column; gap: 16px; min-width: 0; font: var(--dsw-font-xs-13); font-family: Inter, var(--dsw-font-family); }
+.count { color: var(--dsw-alias-label-secondary); }
+.input { min-height: 112px; }
+.summary { display: flex; flex-direction: column; gap: 8px; }
+.hint { color: var(--dsw-alias-label-secondary); }
+.decisions { display: flex; flex-wrap: wrap; gap: 8px 20px; }
+.decisions label { display: inline-flex; align-items: center; gap: 6px; min-height: 28px; color: var(--dsw-alias-label-primary); cursor: pointer; }
+.decisions input { flex: none; width: 16px; height: 16px; margin: 0; accent-color: var(--dsw-alias-brand-primary); cursor: inherit; }
+.decisions input:focus-visible { outline: var(--dsw-focus-ring-width) solid var(--dsw-focus-ring-color, var(--dsw-alias-state-business-primary)); outline-offset: 2px; }
+.decisions label:has(input:disabled) { cursor: default; opacity: 0.5; }
+.error { color: var(--dsw-alias-state-error-primary); overflow-wrap: anywhere; }
+.reconcile { display: flex; flex-wrap: wrap; gap: 8px; }
diff --git a/packages/experimental/client-ui-forge/src/client/SubmitReview.tsx b/packages/experimental/client-ui-forge/src/client/SubmitReview.tsx
new file mode 100644
index 0000000000..065a9df653
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/SubmitReview.tsx
@@ -0,0 +1,70 @@
+/** Centered review submission with a summary, decision, and pending-comment count. */
+
+import { useId, useSyncExternalStore, type ReactNode } from 'react'
+import clsx from 'clsx'
+import { Button, Modal } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { ReviewQueue } from './review-queue.ts'
+import type { NS } from './locales.ts'
+import css from './SubmitReview.module.css'
+import reviewCss from './ReviewComposer.module.css'
+
+/**
+ * Submit a review independently of the diff scroll position; comments remain at their code locations.
+ * @param props - durable queue, current head, submission outcome, and modal actions.
+ * @returns a portalled modal with keyboard focus ownership.
+ */
+export function SubmitReview({ queue, url, headSha, busy, error, submit, close, check, reconcile, t }: PropsLocale<typeof NS> & {
+  readonly queue: ReviewQueue
+  readonly url: string
+  readonly headSha: string
+  readonly busy: boolean
+  readonly error: string | null
+  readonly submit: () => void
+  readonly close: () => void
+  readonly check: () => void
+  readonly reconcile: () => void
+}): ReactNode {
+  const state = useSyncExternalStore(queue.subscribe, queue.getSnapshot)
+  const name = useId()
+  const summaryHint = `${name}-summary-hint`
+  const requiresSummary = state.event === 'request-changes'
+  const locked = busy || state.uncertain !== null
+  const stale = state.comments.some(item => item.source.kind !== 'change' || item.source.url !== url || item.source.headSha !== headSha)
+  const empty = state.comments.some(item => item.comment.body.trim() === '')
+    || (requiresSummary && state.body.trim() === '')
+    || (state.event === 'comment' && state.body.trim() === '' && state.comments.length === 0)
+  const notice = state.error !== null ? t(state.error === 'load' ? 'review.loadFailed' : 'review.saveFailed')
+    : stale ? t('review.stale') : error
+  return <Modal open onClose={close} title={t('review.submit')} closeLabel={t('review.close')}
+    className={clsx(css.modal)} contentClassName={clsx(css.content)}
+    footer={<>
+      <Button variant="outline" onClick={close}>{t('review.cancel')}</Button>
+      <Button variant="primary" disabled={locked || stale || empty || state.error !== null} onClick={submit}>
+        {t(busy ? 'review.submitting' : 'review.submit')}
+      </Button>
+    </>}>
+    <div className={css.form}>
+      <div className={css.count}>{t('review.drafts', { count: state.comments.length })}</div>
+      <div className={css.summary}>
+        <textarea data-modal-autofocus className={clsx(reviewCss.input, css.input)} rows={4} disabled={locked} value={state.body}
+          aria-label={t('review.summary')} placeholder={t('review.summary')} required={requiresSummary}
+          aria-describedby={requiresSummary ? summaryHint : undefined}
+          onChange={(event) => { queue.summarize(event.target.value, state.event) }} />
+        <div id={summaryHint} className={css.hint} role="status">{requiresSummary ? t('review.summaryRequired') : ''}</div>
+      </div>
+      <div className={css.decisions}>
+        {(['comment', 'approve', 'request-changes'] as const).map(value => <label key={value}>
+          <input type="radio" name={name} value={value} checked={state.event === value} disabled={locked}
+            onChange={() => { queue.summarize(state.body, value) }} />
+          {t(value === 'comment' ? 'review.commentOnly' : value === 'approve' ? 'review.approve' : 'review.requestChanges')}
+        </label>)}
+      </div>
+      {notice !== null && <div className={css.error} role="alert">{notice}</div>}
+      {state.uncertain !== null && !busy && <div className={css.reconcile}>
+        <Button size="sm" variant="outline" onClick={check}>{t('review.recheck')}</Button>
+        <Button size="sm" variant="outline" onClick={reconcile}>{t('review.confirmRetry')}</Button>
+      </div>}
+    </div>
+  </Modal>
+}
diff --git a/packages/experimental/client-ui-forge/src/client/WorktreeToggle.module.css b/packages/experimental/client-ui-forge/src/client/WorktreeToggle.module.css
index 6844385290..53cf3e1714 100644
--- a/packages/experimental/client-ui-forge/src/client/WorktreeToggle.module.css
+++ b/packages/experimental/client-ui-forge/src/client/WorktreeToggle.module.css
@@ -9,7 +9,8 @@
 }
 
 .toggle,
-.base {
+.base,
+.current {
   display: inline-flex;
   align-items: center;
   gap: 6px;
@@ -45,7 +46,18 @@
   padding-right: 4px;
 }
 
+.current {
+  box-sizing: content-box;
+  max-width: 200px;
+  font-family: inherit;
+}
+
+.current svg {
+  flex: none;
+}
+
 .base:focus-visible,
+.current:focus-visible,
 .toggle:has(.checkbox:focus-visible) {
   outline: var(--dsw-focus-ring-width) solid var(--dsw-focus-ring-color, var(--dsw-alias-state-business-primary));
   outline-offset: 2px;
@@ -105,3 +117,16 @@
   color: var(--dsw-alias-label-tertiary);
   font-size: 12px;
 }
+
+@media (max-width: 600px) {
+  .root {
+    flex-direction: column;
+    align-items: flex-end;
+    gap: 0;
+  }
+
+  .base,
+  .current {
+    max-width: 120px;
+  }
+}
diff --git a/packages/experimental/client-ui-forge/src/client/WorktreeToggle.tsx b/packages/experimental/client-ui-forge/src/client/WorktreeToggle.tsx
index 1abde16c94..a6053b6a5e 100644
--- a/packages/experimental/client-ui-forge/src/client/WorktreeToggle.tsx
+++ b/packages/experimental/client-ui-forge/src/client/WorktreeToggle.tsx
@@ -2,11 +2,11 @@
 
 import { useState, type ReactNode } from 'react'
 import clsx from 'clsx'
-import { IconChevronDownOutlineRegular, Menu, Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
+import { IconBranchOutlineRegular, IconChevronDownOutlineRegular, Menu, Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { MenuEntry } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { HostObservable, InjectFace, PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
 import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
-import type { ForgeBranches, ForgePanelState } from '../types.ts'
+import type { ForgeBranches, ForgePanelState, ForgeWorktreeBlocker } from '../types.ts'
 import type { NS } from './locales.ts'
 import type { PanelSnapshot } from './source.ts'
 import css from './WorktreeToggle.module.css'
@@ -95,22 +95,28 @@ function BaseMenu({ base, held, branches, request, t }: {
 }
 
 /** What the option shows for a panel state, or undefined while it stays hidden. */
-function optionOf(state: ForgePanelState | null): { readonly usable: boolean; readonly current: string | null } | undefined {
+function optionOf(state: ForgePanelState | null): {
+  readonly blocker: Exclude<ForgeWorktreeBlocker, 'not-git'> | null
+  readonly current: string | null
+  readonly commit: string | null
+} | undefined {
   if (state === null || !state.worktree.editable) return undefined
+  const blocker = state.worktree.blocker
+  if (blocker === 'not-git') return undefined
   const checkout = state.checkout
-  if (checkout.state === 'none') return { usable: false, current: null }
   if (checkout.state !== 'ready') return undefined
-  return { usable: state.worktree.blocker === null, current: checkout.checkout.branch }
+  return { blocker, current: checkout.checkout.branch, commit: checkout.checkout.commit }
 }
 
 /**
  * Render the worktree option while the Session can still start in a worktree:
- * the base branch menu once requested, then the checkbox. When the checkout
- * cannot host a worktree, the tooltip gives the reason and the checkbox only
- * withdraws an open request. Both stay fixed while the worktree is being
- * created.
+ * the current branch, or the base branch menu once requested, then the checkbox.
+ * A blocked request keeps its selected base visible without a menu; the checkbox
+ * only withdraws it. Branch details support pointer, touch, and keyboard access.
+ * The request stays fixed while the worktree is being created.
  * @param props - panel snapshot hook, request actions, and copy.
- * @returns the option, or nothing once a turn started, the request settled, or no worktree service is mounted.
+ * @returns the option, or nothing outside a known Git checkout, once a turn started,
+ * the request settled, or no worktree service is mounted.
  */
 export function WorktreeToggle({ usePanel, request, cancel, branches, t }: WorktreeToggleProps): ReactNode {
   const state = usePanel(snapshot => snapshot.state)
@@ -119,18 +125,30 @@ export function WorktreeToggle({ usePanel, request, cancel, branches, t }: Workt
   if (state === null || option === undefined) return null
   const held = state.worktree.creation !== null
   const requested = pending ?? state.worktree.request !== null
-  const disabled = held || pending !== null || (!option.usable && !requested)
-  const blocker = state.worktree.blocker ?? 'not-git'
+  const usable = option.blocker === null
+  const disabled = held || pending !== null || (!usable && !requested)
+  const current = option.current ?? (option.commit === null ? t('checkout.detached') : t('worktree.detachedTip', { commit: option.commit }))
+  const base = state.worktree.request === null ? option.current : state.worktree.request.from
+  const branchText = requested ? base === null ? t('worktree.baseHead') : t('worktree.base', { branch: base }) : current
+  const branchTip = requested || option.current === null ? branchText : t('worktree.currentBranchTip', { branch: option.current })
   const change = (checked: boolean): void => {
     setPending(checked)
     void (checked ? request(option.current) : cancel()).then(() => { setPending(null) })
   }
   return (
     <span className={css.root} data-forge-worktree="">
-      {requested && option.usable && (
+      {requested && usable ? (
         <BaseMenu base={state.worktree.request?.from ?? option.current} held={held} branches={branches} request={request} t={t} />
+      ) : (
+        <Tooltip label={branchTip} side="bottom" portal openOnClick>
+          <button type="button" className={css.current} aria-label={branchTip}
+            data-forge-current-branch={requested ? undefined : ''} data-forge-base-branch={requested ? '' : undefined}>
+            <IconBranchOutlineRegular size={14} />
+            <span className={css.baseLabel}>{branchText}</span>
+          </button>
+        </Tooltip>
       )}
-      <Tooltip label={option.usable ? t('worktree.hint') : t(`worktree.blocked.${blocker}`)} side="bottom" delayMs={500}>
+      <Tooltip label={option.blocker === null ? t('worktree.hint') : t(`worktree.blocked.${option.blocker}`)} side="bottom" delayMs={500}>
         <label className={css.toggle} data-disabled={disabled ? '' : undefined}>
           <input
             type="checkbox"
diff --git a/packages/experimental/client-ui-forge/src/client/changes-address.ts b/packages/experimental/client-ui-forge/src/client/changes-address.ts
index 9e5c5c442e..de9c62bda3 100644
--- a/packages/experimental/client-ui-forge/src/client/changes-address.ts
+++ b/packages/experimental/client-ui-forge/src/client/changes-address.ts
@@ -79,13 +79,14 @@ export function parseChangesAddress(address: string): ChangesTarget | undefined
 }
 
 /**
- * Name a changes view: 变更 for the local changes, #N 的变更 for a change request with a number.
+ * Name a changes view: 本地变更 for the local changes, #N 的变更 for a change request with a number.
  * @param source - what the view shows.
  * @param t - forge panel copy.
  * @returns the title in the current language.
  */
 export function changesTitle(source: ChangesSource, t: TranslateNS<typeof NS>): string {
-  const number = source.kind === 'change' ? numberOf({ ref: null, url: source.url }) : null
+  if (source.kind === 'local') return t('changes.local.title')
+  const number = numberOf({ ref: null, url: source.url })
   return number === null ? t('diff.tab') : t('diff.tabNumbered', { number })
 }
 
diff --git a/packages/experimental/client-ui-forge/src/client/code-selection.ts b/packages/experimental/client-ui-forge/src/client/code-selection.ts
new file mode 100644
index 0000000000..326053d9a5
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/code-selection.ts
@@ -0,0 +1,53 @@
+/** Read browser text selections from one diff side without including the interleaved opposite column. */
+
+/** Selected displayed lines and the exact selected text on their side. */
+export interface CodeSelection {
+  readonly side: 'L' | 'R'
+  readonly from: number
+  readonly to: number
+  readonly text: string
+}
+
+function codeAt(node: Node | null): HTMLElement | null {
+  return (node instanceof Element ? node : node?.parentElement)?.closest<HTMLElement>('[data-review-code]') ?? null
+}
+
+/**
+ * Find the side where a text selection begins; unified context belongs to the new side.
+ * @param root - this file's diff element.
+ * @param node - pointer or selection anchor.
+ * @returns the available side, or undefined outside code text.
+ */
+export function codeSideAt(root: HTMLElement, node: Node | null): 'L' | 'R' | undefined {
+  const code = codeAt(node)
+  if (code === null || !root.contains(code)) return undefined
+  return code.dataset.newLine === undefined ? 'L' : 'R'
+}
+
+/**
+ * Read only code fragments from the selected side, retaining partial first and last lines for copy.
+ * @param root - this file's diff element.
+ * @param side - side captured when the gesture began.
+ * @returns the selected range and text, or undefined for collapsed or cross-file selections.
+ */
+export function readCodeSelection(root: HTMLElement, side: 'L' | 'R'): CodeSelection | undefined {
+  const selection = root.ownerDocument.getSelection()
+  if (selection === null || selection.isCollapsed || selection.rangeCount === 0
+    || !root.contains(selection.anchorNode) || !root.contains(selection.focusNode)) return undefined
+  const range = selection.getRangeAt(0)
+  const fragments: { line: number; text: string }[] = []
+  for (const code of root.querySelectorAll<HTMLElement>('[data-review-code]')) {
+    const line = side === 'L' ? code.dataset.oldLine : code.dataset.newLine
+    if (line === undefined || !range.intersectsNode(code)) continue
+    const part = root.ownerDocument.createRange()
+    part.selectNodeContents(code)
+    if (code.contains(range.startContainer)) part.setStart(range.startContainer, range.startOffset)
+    if (code.contains(range.endContainer)) part.setEnd(range.endContainer, range.endOffset)
+    const text = part.toString()
+    if (text !== '' || code.textContent === '') fragments.push({ line: Number(line), text })
+  }
+  const first = fragments[0]
+  const last = fragments.at(-1)
+  if (first === undefined || last === undefined) return undefined
+  return { side, from: first.line, to: last.line, text: fragments.map(item => item.text).join('\n') }
+}
diff --git a/packages/experimental/client-ui-forge/src/client/file-tree.ts b/packages/experimental/client-ui-forge/src/client/file-tree.ts
new file mode 100644
index 0000000000..32b8551ab2
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/file-tree.ts
@@ -0,0 +1,69 @@
+/** Directory navigation derived only from the files in one loaded diff. */
+import type { ForgeDiffFile } from '../types.ts'
+
+/** A changed file or a compacted chain of directories containing changed files. */
+export type ChangedFileNode =
+  | { readonly kind: 'file'; readonly path: string; readonly name: string; readonly file: ForgeDiffFile }
+  | { readonly kind: 'directory'; readonly path: string; readonly name: string; readonly children: readonly ChangedFileNode[] }
+
+interface Directory {
+  path: string
+  name: string
+  directories: Map<string, Directory>
+  files: ForgeDiffFile[]
+}
+
+function childrenOf(directory: Directory): ChangedFileNode[] {
+  const directories = [...directory.directories.values()].map((child): ChangedFileNode => {
+    let leaf = child
+    let name = child.name
+    while (leaf.files.length === 0 && leaf.directories.size === 1) {
+      for (const next of leaf.directories.values()) {
+        name += `/${next.name}`
+        leaf = next
+      }
+    }
+    return { kind: 'directory', path: leaf.path, name, children: childrenOf(leaf) }
+  })
+  const files = directory.files.map((file): ChangedFileNode => ({ kind: 'file', path: file.path, name: file.path.slice(file.path.lastIndexOf('/') + 1), file }))
+  const ordered = (nodes: ChangedFileNode[]): ChangedFileNode[] => nodes.sort((a, b) => a.name < b.name ? -1 : a.name > b.name ? 1 : 0)
+  return [...ordered(directories), ...ordered(files)]
+}
+
+/**
+ * Build a directory-first tree, compacting directories with a single directory child.
+ * @param files - changed files; Git paths use forward slashes, including on Windows.
+ * @returns the root's children in stable name order.
+ */
+export function changedFileTree(files: readonly ForgeDiffFile[]): readonly ChangedFileNode[] {
+  const root: Directory = { path: '', name: '', directories: new Map(), files: [] }
+  for (const file of files) {
+    let directory = root
+    for (const name of file.path.split('/').slice(0, -1)) {
+      let child = directory.directories.get(name)
+      if (child === undefined) {
+        child = { path: directory.path === '' ? name : `${directory.path}/${name}`, name, directories: new Map(), files: [] }
+        directory.directories.set(name, child)
+      }
+      directory = child
+    }
+    directory.files.push(file)
+  }
+  return childrenOf(root)
+}
+
+/**
+ * Keep matching files and their ancestors without changing directory identities.
+ * @param nodes - the complete compacted tree.
+ * @param query - case-insensitive text matched against current and previous paths.
+ * @returns matching branches, or the original tree for an empty query.
+ */
+export function filterFileTree(nodes: readonly ChangedFileNode[], query: string): readonly ChangedFileNode[] {
+  const needle = query.trim().toLowerCase()
+  if (needle === '') return nodes
+  return nodes.flatMap((node): ChangedFileNode[] => {
+    if (node.kind === 'file') return [node.path, node.file.previousPath ?? ''].some(path => path.toLowerCase().includes(needle)) ? [node] : []
+    const children = filterFileTree(node.children, needle)
+    return children.length === 0 ? [] : [{ ...node, children }]
+  })
+}
diff --git a/packages/experimental/client-ui-forge/src/client/locales.ts b/packages/experimental/client-ui-forge/src/client/locales.ts
index 3a02f45734..8fe3515633 100644
--- a/packages/experimental/client-ui-forge/src/client/locales.ts
+++ b/packages/experimental/client-ui-forge/src/client/locales.ts
@@ -5,6 +5,51 @@ export const NS = 'forgePanel'
 
 /** Chinese copy; its keys define {@link ForgePanelKey}. */
 export const zh = {
+  'review.startReview': '开始评审',
+  'review.githubActions': 'GitHub 评论选项',
+  'review.publishing': '发布中…',
+  'review.submitting': '提交中…',
+  'review.close': '关闭',
+  'review.pending': '待提交',
+  'review.quoted': '已添加到输入框',
+  'review.yourComment': '你的评论',
+  'review.outdated': '代码已更新',
+  'review.done': '完成',
+  'review.addComment': '添加评论',
+  'diff.resizeFileTree': '调整文件树宽度',
+  'diff.fileTree': '文件树',
+  'diff.showFileTreeLeft': '在左侧显示文件树',
+  'diff.moveFileTreeRight': '将文件树移到右侧',
+  'guide.title': '代码审查和变更',
+  'guide.description': '查看代码变更与本会话的变更请求',
+  'diff.hideFileTree': '隐藏文件树',
+  'review.range': '评论 {range}',
+  'review.comment': '留下评论…',
+  'review.cancel': '取消',
+  'review.addToInput': '添加到输入框',
+  'review.publish': '发布单条评论',
+  'review.queue': '加入评审',
+  'review.selectLine': '选择第 {line} 行',
+  'review.inputFailed': '输入框暂时无法添加引用，请稍后重试',
+  'review.saveFailed': '无法保存评审草稿，请检查浏览器存储后重试',
+  'review.unknown': '无法确认提交结果。请先在 GitHub 核对，避免重复发布',
+  'review.submit': '提交评审',
+  'review.summary': '评审总结…',
+  'review.approve': '批准',
+  'review.requestChanges': '请求更改',
+  'review.summaryRequired': '请求更改时，请填写评审总结',
+  'review.commentOnly': '评论',
+  'review.drafts': '待提交评论（{count}）',
+  'review.edit': '编辑',
+  'review.remove': '删除',
+  'review.stale': 'PR 已有新提交，请刷新并重新选择评论行',
+  'review.published': '已发布到 GitHub',
+  'review.submitted': '已提交评审',
+  'review.failed': '提交失败：{message}',
+  'review.unsupported': '此代码托管服务不支持提交评审',
+  'review.loadFailed': '无法读取评审草稿，请检查浏览器存储',
+  'review.recheck': '在 GitHub 查看',
+  'review.confirmRetry': '已核对，允许重新提交',
   'tab.title': '变更请求',
   'header.label': '本会话的变更请求',
   'header.attention': '本会话的变更请求需要处理',
@@ -20,7 +65,7 @@ export const zh = {
   'changes.title': '本会话的变更请求 · {count}',
   'changes.empty': '本会话还没有变更请求',
   'changes.emptyHint': '本会话关联的变更请求（创建、查看、编辑或检出的，以及所在分支或推送分支上的）会显示在这里',
-  'changes.local.title': '变更',
+  'changes.local.title': '本地变更',
   'changes.local.refs': '{head} → {base}',
   'changes.local.files': '{count} 个文件',
   'changes.local.viewAria': '查看本会话的变更：{count} 个文件，新增 {added} 行，删除 {deleted} 行',
@@ -49,12 +94,17 @@ export const zh = {
   'change.ci.running': '检查中',
   'change.ci.passed': '检查通过',
   'change.ci.failed': '{count} 项检查失败',
+  'change.ci.cancelled': '已取消 {count} 项检查',
   'change.ci.failedUnlisted': '检查失败',
   'change.checks.failed': '{count} 项失败',
   'change.checks.running': '{count} 项进行中',
   'change.checks.passed': '{count} 项通过',
+  'change.checks.cancelled': '{count} 项已取消',
   'change.checks.other': '其他 {count} 项',
-  'change.checks.truncated': '只列出前 {count} 项',
+  'change.checks.truncated': '已加载 {count} 项检查，仍有更多',
+  'change.checks.loading': '正在加载更多检查',
+  'change.checks.loadFailed': '更多检查加载失败：{message}',
+  'change.checks.retry': '重试加载检查',
   'change.check.running': '进行中',
   'change.check.queued': '排队中',
   'change.flag.changesRequested': '要求修改',
@@ -104,6 +154,8 @@ export const zh = {
   'diff.scopeNote.unstaged': '与暂存区比较，包含未跟踪的文件',
   'diff.scopeNote.staged': '暂存区与 HEAD 比较',
   'diff.allFiles': '全部 {count} 个文件',
+  'diff.filterFiles': '筛选文件…',
+  'diff.noMatchingFiles': '没有匹配的文件',
   'diff.refresh': '刷新变更',
   'diff.expandAll': '全部展开',
   'diff.collapseAll': '全部折叠',
@@ -126,6 +178,7 @@ export const zh = {
   'diff.fileTooLarge': '文件太大，无法显示变更',
   'diff.error': '无法读取变更',
   'diff.tooLarge': '变更太大，无法在这里显示',
+  'diff.filterConfigFailed': '无法完整读取 Git 过滤器配置，尚未执行比较。请检查 Git 配置和读取上限后重试',
   'diff.viewInBrowser': '在浏览器中查看',
   'diff.noForkPoint': '找不到本分支的分叉点，请选择其他范围',
   'diff.empty': '没有变更',
@@ -145,15 +198,16 @@ export const zh = {
   'duration.seconds': '{seconds} 秒',
   'duration.minutes': '{minutes} 分 {seconds} 秒',
   'duration.hours': '{hours} 小时 {minutes} 分',
-  'worktree.label': '工作树',
+  'worktree.label': '新建工作树',
   'worktree.hint': '在独立的工作树中运行本会话：发送后基于所选分支新建分支，修改和提交不影响项目目录',
-  'worktree.blocked.not-git': '工作区不是 Git 仓库，无法使用工作树',
   'worktree.blocked.outside-writable-root': '这个工作区的 Git 数据不在可写目录中（例如工作区本身就是工作树），暂不支持使用工作树',
   'worktree.blocked.read-only': '只读模式下无法使用工作树',
   'worktree.base': '基于 {branch}',
   'worktree.baseHead': '基于当前 HEAD',
   'worktree.baseMenu': '选择基准分支',
   'worktree.currentBranch': '当前分支',
+  'worktree.currentBranchTip': '当前分支：{branch}',
+  'worktree.detachedTip': '未在分支上 · {commit}',
   'creation.title': '正在创建工作树',
   'creation.failed': '创建工作树失败',
   'creation.prepare': '创建分支',
@@ -211,6 +265,51 @@ export type ForgePanelKey = keyof typeof zh
 
 /** English copy with the same keys. */
 export const en: Record<ForgePanelKey, string> = {
+  'review.startReview': 'Start review',
+  'review.githubActions': 'GitHub comment options',
+  'review.publishing': 'Publishing…',
+  'review.submitting': 'Submitting…',
+  'review.close': 'Close',
+  'review.pending': 'Pending',
+  'review.quoted': 'Added to input',
+  'review.yourComment': 'Your comment',
+  'review.outdated': 'Code updated',
+  'review.done': 'Done',
+  'review.addComment': 'Add comment',
+  'diff.resizeFileTree': 'Resize file tree',
+  'diff.fileTree': 'File tree',
+  'diff.showFileTreeLeft': 'Show file tree on the left',
+  'diff.moveFileTreeRight': 'Move file tree to the right',
+  'guide.title': 'Code review and changes',
+  'guide.description': 'Review code changes and this session’s change requests',
+  'diff.hideFileTree': 'Hide file tree',
+  'review.range': 'Comment on {range}',
+  'review.comment': 'Leave a comment…',
+  'review.cancel': 'Cancel',
+  'review.addToInput': 'Add to input',
+  'review.publish': 'Publish single comment',
+  'review.queue': 'Add to review',
+  'review.selectLine': 'Select line {line}',
+  'review.inputFailed': 'The input cannot accept a reference yet. Try again shortly.',
+  'review.saveFailed': 'Could not save the review draft. Check browser storage and try again.',
+  'review.unknown': 'The submission outcome is unknown. Check GitHub before publishing again.',
+  'review.submit': 'Submit review',
+  'review.summary': 'Review summary…',
+  'review.approve': 'Approve',
+  'review.requestChanges': 'Request changes',
+  'review.summaryRequired': 'Enter a review summary to request changes.',
+  'review.commentOnly': 'Comment',
+  'review.drafts': 'Pending comments ({count})',
+  'review.edit': 'Edit',
+  'review.remove': 'Delete',
+  'review.stale': 'The PR has new commits. Refresh and select the comment lines again.',
+  'review.published': 'Published to GitHub',
+  'review.submitted': 'Review submitted',
+  'review.failed': 'Submission failed: {message}',
+  'review.unsupported': 'This code host does not support review submission.',
+  'review.loadFailed': 'Could not read review drafts. Check browser storage.',
+  'review.recheck': 'View on GitHub',
+  'review.confirmRetry': 'Checked; allow resubmission',
   'tab.title': 'Change requests',
   'header.label': 'Change requests of this Session',
   'header.attention': 'Change requests of this Session need attention',
@@ -226,7 +325,7 @@ export const en: Record<ForgePanelKey, string> = {
   'changes.title': 'Change requests of this Session · {count}',
   'changes.empty': 'This Session has no change requests yet',
   'changes.emptyHint': 'Change requests linked to this Session (created, viewed, edited, or checked out, or open on its current or pushed branches) appear here',
-  'changes.local.title': 'Changes',
+  'changes.local.title': 'Local changes',
   'changes.local.refs': '{head} → {base}',
   'changes.local.files': '{count} files',
   'changes.local.viewAria': 'View the changes of this Session: {count} files, {added} lines added, {deleted} lines deleted',
@@ -255,12 +354,17 @@ export const en: Record<ForgePanelKey, string> = {
   'change.ci.running': 'Checks running',
   'change.ci.passed': 'Checks passed',
   'change.ci.failed': '{count} checks failed',
+  'change.ci.cancelled': '{count} checks cancelled',
   'change.ci.failedUnlisted': 'Checks failed',
   'change.checks.failed': '{count} failed',
   'change.checks.running': '{count} running',
   'change.checks.passed': '{count} passed',
+  'change.checks.cancelled': '{count} cancelled',
   'change.checks.other': '{count} other',
-  'change.checks.truncated': 'Only the first {count} are listed',
+  'change.checks.truncated': '{count} checks loaded; more available',
+  'change.checks.loading': 'Loading more checks',
+  'change.checks.loadFailed': 'Could not load more checks: {message}',
+  'change.checks.retry': 'Retry loading checks',
   'change.check.running': 'Running',
   'change.check.queued': 'Queued',
   'change.flag.changesRequested': 'Changes requested',
@@ -310,6 +414,8 @@ export const en: Record<ForgePanelKey, string> = {
   'diff.scopeNote.unstaged': 'Compared with the index, including untracked files',
   'diff.scopeNote.staged': 'The index compared with HEAD',
   'diff.allFiles': 'All {count} files',
+  'diff.filterFiles': 'Filter files…',
+  'diff.noMatchingFiles': 'No matching files',
   'diff.refresh': 'Refresh changes',
   'diff.expandAll': 'Expand all files',
   'diff.collapseAll': 'Collapse all files',
@@ -332,6 +438,7 @@ export const en: Record<ForgePanelKey, string> = {
   'diff.fileTooLarge': 'This file is too large to show',
   'diff.error': 'The changes could not be read',
   'diff.tooLarge': 'These changes are too large to show here',
+  'diff.filterConfigFailed': 'No comparison was run because Git filter settings could not be read completely. Check the Git settings and output limit, then retry.',
   'diff.viewInBrowser': 'View in browser',
   'diff.noForkPoint': 'No fork point was found for this branch; choose another scope',
   'diff.empty': 'No changes',
@@ -351,15 +458,16 @@ export const en: Record<ForgePanelKey, string> = {
   'duration.seconds': '{seconds}s',
   'duration.minutes': '{minutes}m {seconds}s',
   'duration.hours': '{hours}h {minutes}m',
-  'worktree.label': 'Worktree',
+  'worktree.label': 'New worktree',
   'worktree.hint': 'Run this Session in its own worktree: sending creates a new branch from the chosen one, so changes and commits leave the project directory alone',
-  'worktree.blocked.not-git': 'This workspace is not a Git repository, so it cannot use a worktree',
   'worktree.blocked.outside-writable-root': 'The Git data of this workspace is outside the writable directories, as when the workspace is itself a worktree, so it cannot use a worktree yet',
   'worktree.blocked.read-only': 'A read-only Session cannot use a worktree',
   'worktree.base': 'From {branch}',
   'worktree.baseHead': 'From the current HEAD',
   'worktree.baseMenu': 'Base branch',
   'worktree.currentBranch': 'Current',
+  'worktree.currentBranchTip': 'Current branch: {branch}',
+  'worktree.detachedTip': 'Not on a branch · {commit}',
   'creation.title': 'Creating the worktree',
   'creation.failed': 'The worktree could not be created',
   'creation.prepare': 'Create the branch',
@@ -421,6 +529,51 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
 
 /** Japanese copy with the same keys. */
 export const ja: Record<ForgePanelKey, string> = {
+  'review.startReview': 'レビューを開始',
+  'review.githubActions': 'GitHub コメントの操作',
+  'review.publishing': '投稿中…',
+  'review.submitting': '送信中…',
+  'review.close': '閉じる',
+  'review.pending': '保留中',
+  'review.quoted': '入力欄に追加済み',
+  'review.yourComment': '自分のコメント',
+  'review.outdated': 'コード更新済み',
+  'review.done': '完了',
+  'review.addComment': 'コメントを追加',
+  'diff.resizeFileTree': 'ファイルツリーの幅を変更',
+  'diff.fileTree': 'ファイルツリー',
+  'diff.showFileTreeLeft': 'ファイルツリーを左側に表示',
+  'diff.moveFileTreeRight': 'ファイルツリーを右側に移動',
+  'guide.title': 'コードレビューと変更',
+  'guide.description': 'コードの変更とこのセッションの変更リクエストを確認',
+  'diff.hideFileTree': 'ファイルツリーを非表示',
+  'review.range': '{range} にコメント',
+  'review.comment': 'コメントを入力…',
+  'review.cancel': 'キャンセル',
+  'review.addToInput': '入力欄に追加',
+  'review.publish': '単独コメントを投稿',
+  'review.queue': 'レビューに追加',
+  'review.selectLine': '{line} 行を選択',
+  'review.inputFailed': '入力欄に引用を追加できません。後でもう一度お試しください。',
+  'review.saveFailed': 'レビューの下書きを保存できません。ブラウザーのストレージを確認してください。',
+  'review.unknown': '送信結果を確認できません。再投稿する前に GitHub を確認してください。',
+  'review.submit': 'レビューを送信',
+  'review.summary': 'レビューの要約…',
+  'review.approve': '承認',
+  'review.requestChanges': '変更を要求',
+  'review.summaryRequired': '変更を要求するには、レビューの概要を入力してください。',
+  'review.commentOnly': 'コメント',
+  'review.drafts': '保留中のコメント（{count}）',
+  'review.edit': '編集',
+  'review.remove': '削除',
+  'review.stale': 'PR に新しいコミットがあります。更新してコメント行を選び直してください。',
+  'review.published': 'GitHub に投稿しました',
+  'review.submitted': 'レビューを送信しました',
+  'review.failed': '送信に失敗しました：{message}',
+  'review.unsupported': 'このホストはレビューの送信に対応していません。',
+  'review.loadFailed': '下書きを読み込めません。ブラウザーのストレージを確認してください。',
+  'review.recheck': 'GitHub で表示',
+  'review.confirmRetry': '確認済み・再送信を許可',
   'list.worktree': '専用のワークツリー内',
   'list.stateChecks': '{state} · {checks}',
   'list.more': '他 {count} 件の変更リクエスト',
@@ -439,7 +592,7 @@ export const ja: Record<ForgePanelKey, string> = {
   'changes.title': 'このセッションの変更リクエスト · {count}',
   'changes.empty': 'このセッションにはまだ変更リクエストがありません',
   'changes.emptyHint': 'このセッションで作成、表示、編集、チェックアウトした変更リクエストや、現在のブランチまたはプッシュしたブランチで開いている変更リクエストがここに表示されます',
-  'changes.local.title': '変更',
+  'changes.local.title': 'ローカルの変更',
   'changes.local.refs': '{head} → {base}',
   'changes.local.files': '{count} ファイル',
   'changes.local.viewAria': 'このセッションの変更を表示：{count} ファイル、{added} 行追加、{deleted} 行削除',
@@ -465,12 +618,17 @@ export const ja: Record<ForgePanelKey, string> = {
   'change.ci.running': 'チェック実行中',
   'change.ci.passed': 'チェック成功',
   'change.ci.failed': '{count} 件のチェックが失敗',
+  'change.ci.cancelled': '{count} 件のチェックがキャンセルされました',
   'change.ci.failedUnlisted': 'チェック失敗',
   'change.checks.failed': '{count} 件失敗',
   'change.checks.running': '{count} 件実行中',
   'change.checks.passed': '{count} 件成功',
+  'change.checks.cancelled': '{count} 件キャンセル',
   'change.checks.other': 'その他 {count} 件',
-  'change.checks.truncated': '最初の {count} 件のみ表示',
+  'change.checks.truncated': '{count} 件のチェックを読み込み済み（続きあり）',
+  'change.checks.loading': '追加のチェックを読み込み中',
+  'change.checks.loadFailed': '追加のチェックを読み込めませんでした: {message}',
+  'change.checks.retry': 'チェックの読み込みを再試行',
   'change.check.running': '実行中',
   'change.check.queued': 'キュー待ち',
   'change.flag.changesRequested': '変更が要求されています',
@@ -520,6 +678,8 @@ export const ja: Record<ForgePanelKey, string> = {
   'diff.scopeNote.unstaged': 'インデックスと比較、未追跡ファイルを含む',
   'diff.scopeNote.staged': 'インデックスと HEAD を比較',
   'diff.allFiles': '全 {count} ファイル',
+  'diff.filterFiles': 'ファイルを絞り込み…',
+  'diff.noMatchingFiles': '一致するファイルがありません',
   'diff.refresh': '変更を更新',
   'diff.expandAll': 'すべてのファイルを展開',
   'diff.collapseAll': 'すべてのファイルを折りたたむ',
@@ -542,6 +702,7 @@ export const ja: Record<ForgePanelKey, string> = {
   'diff.fileTooLarge': 'ファイルが大きすぎて表示できません',
   'diff.error': '変更を読み取れませんでした',
   'diff.tooLarge': '変更が大きすぎるため、ここには表示できません',
+  'diff.filterConfigFailed': 'Git フィルター設定を完全に読み取れないため、比較を実行していません。Git の設定と出力上限を確認して再試行してください。',
   'diff.viewInBrowser': 'ブラウザーで表示',
   'diff.noForkPoint': 'このブランチの分岐点が見つかりません。別の範囲を選んでください',
   'diff.empty': '変更なし',
@@ -561,15 +722,16 @@ export const ja: Record<ForgePanelKey, string> = {
   'duration.seconds': '{seconds}秒',
   'duration.minutes': '{minutes}分 {seconds}秒',
   'duration.hours': '{hours}時間 {minutes}分',
-  'worktree.label': 'ワークツリー',
+  'worktree.label': '新しいワークツリー',
   'worktree.hint': 'このセッションを専用のワークツリーで実行します。送信時に選択したブランチから新しいブランチを作成するため、変更やコミットはプロジェクトディレクトリに影響しません',
-  'worktree.blocked.not-git': 'このワークスペースは Git リポジトリではないため、ワークツリーを使用できません',
   'worktree.blocked.outside-writable-root': 'このワークスペースの Git データが書き込み可能なディレクトリ外にあります。ワークスペース自体がワークツリーである場合などは、まだワークツリーを使用できません',
   'worktree.blocked.read-only': '読み取り専用のセッションではワークツリーを使用できません',
   'worktree.base': '基点 {branch}',
   'worktree.baseHead': '現在の HEAD を基点にする',
   'worktree.baseMenu': '基準ブランチ',
   'worktree.currentBranch': '現在',
+  'worktree.currentBranchTip': '現在のブランチ：{branch}',
+  'worktree.detachedTip': 'ブランチ上にありません · {commit}',
   'creation.title': 'ワークツリーを作成中',
   'creation.failed': 'ワークツリーを作成できませんでした',
   'creation.prepare': 'ブランチを作成',
@@ -624,6 +786,51 @@ export const ja: Record<ForgePanelKey, string> = {
 
 /** Spanish copy with the same keys. */
 export const es: Record<ForgePanelKey, string> = {
+  'review.startReview': 'Iniciar revisión',
+  'review.githubActions': 'Opciones de comentario de GitHub',
+  'review.publishing': 'Publicando…',
+  'review.submitting': 'Enviando…',
+  'review.close': 'Cerrar',
+  'review.pending': 'Pendiente',
+  'review.quoted': 'Añadido al campo de entrada',
+  'review.yourComment': 'Tu comentario',
+  'review.outdated': 'Código actualizado',
+  'review.done': 'Listo',
+  'review.addComment': 'Añadir comentario',
+  'diff.resizeFileTree': 'Cambiar el ancho del árbol',
+  'diff.fileTree': 'Árbol de archivos',
+  'diff.showFileTreeLeft': 'Mostrar árbol de archivos a la izquierda',
+  'diff.moveFileTreeRight': 'Mover árbol de archivos a la derecha',
+  'guide.title': 'Revisión de código y cambios',
+  'guide.description': 'Revisar los cambios de código y las solicitudes de cambio de esta sesión',
+  'diff.hideFileTree': 'Ocultar árbol de archivos',
+  'review.range': 'Comentar {range}',
+  'review.comment': 'Escribe un comentario…',
+  'review.cancel': 'Cancelar',
+  'review.addToInput': 'Añadir al campo de entrada',
+  'review.publish': 'Publicar comentario individual',
+  'review.queue': 'Añadir a la revisión',
+  'review.selectLine': 'Seleccionar línea {line}',
+  'review.inputFailed': 'No se puede añadir la referencia. Inténtalo más tarde.',
+  'review.saveFailed': 'No se pudo guardar el borrador. Comprueba el almacenamiento del navegador.',
+  'review.unknown': 'El resultado del envío es desconocido. Comprueba GitHub antes de volver a publicar.',
+  'review.submit': 'Enviar revisión',
+  'review.summary': 'Resumen de la revisión…',
+  'review.approve': 'Aprobar',
+  'review.requestChanges': 'Solicitar cambios',
+  'review.summaryRequired': 'Escribe un resumen de la revisión para solicitar cambios.',
+  'review.commentOnly': 'Comentar',
+  'review.drafts': 'Comentarios pendientes ({count})',
+  'review.edit': 'Editar',
+  'review.remove': 'Eliminar',
+  'review.stale': 'El PR tiene nuevos commits. Actualiza y vuelve a seleccionar las líneas.',
+  'review.published': 'Publicado en GitHub',
+  'review.submitted': 'Revisión enviada',
+  'review.failed': 'Error al enviar: {message}',
+  'review.unsupported': 'Este servicio no admite el envío de revisiones.',
+  'review.loadFailed': 'No se pudieron leer los borradores. Comprueba el almacenamiento del navegador.',
+  'review.recheck': 'Ver en GitHub',
+  'review.confirmRetry': 'Comprobado; permitir reenvío',
   'list.worktree': 'En su propio árbol de trabajo',
   'list.stateChecks': '{state} · {checks}',
   'list.more': '{count} solicitudes de cambio más',
@@ -642,7 +849,7 @@ export const es: Record<ForgePanelKey, string> = {
   'changes.title': 'Solicitudes de cambio de esta sesión · {count}',
   'changes.empty': 'Esta sesión aún no tiene solicitudes de cambio',
   'changes.emptyHint': 'Aquí aparecen las solicitudes vinculadas a esta sesión: creadas, consultadas, editadas o extraídas, o abiertas en sus ramas actuales o enviadas',
-  'changes.local.title': 'Cambios',
+  'changes.local.title': 'Cambios locales',
   'changes.local.refs': '{head} → {base}',
   'changes.local.files': '{count} archivos',
   'changes.local.viewAria': 'Ver cambios de esta sesión: {count} archivos, {added} líneas añadidas y {deleted} eliminadas',
@@ -668,12 +875,17 @@ export const es: Record<ForgePanelKey, string> = {
   'change.ci.running': 'Comprobaciones en curso',
   'change.ci.passed': 'Comprobaciones superadas',
   'change.ci.failed': '{count} comprobaciones fallidas',
+  'change.ci.cancelled': '{count} comprobaciones canceladas',
   'change.ci.failedUnlisted': 'Comprobaciones fallidas',
   'change.checks.failed': '{count} fallidas',
   'change.checks.running': '{count} en curso',
   'change.checks.passed': '{count} superadas',
+  'change.checks.cancelled': '{count} canceladas',
   'change.checks.other': '{count} más',
-  'change.checks.truncated': 'Solo se muestran las primeras {count}',
+  'change.checks.truncated': '{count} comprobaciones cargadas; hay más',
+  'change.checks.loading': 'Cargando más comprobaciones',
+  'change.checks.loadFailed': 'No se pudieron cargar más comprobaciones: {message}',
+  'change.checks.retry': 'Reintentar cargar comprobaciones',
   'change.check.running': 'En curso',
   'change.check.queued': 'En cola',
   'change.flag.changesRequested': 'Cambios solicitados',
@@ -723,6 +935,8 @@ export const es: Record<ForgePanelKey, string> = {
   'diff.scopeNote.unstaged': 'Comparado con el índice, incluidos los archivos sin seguimiento',
   'diff.scopeNote.staged': 'Índice comparado con HEAD',
   'diff.allFiles': 'Los {count} archivos',
+  'diff.filterFiles': 'Filtrar archivos…',
+  'diff.noMatchingFiles': 'No hay archivos coincidentes',
   'diff.refresh': 'Actualizar cambios',
   'diff.expandAll': 'Expandir todos los archivos',
   'diff.collapseAll': 'Contraer todos los archivos',
@@ -745,6 +959,7 @@ export const es: Record<ForgePanelKey, string> = {
   'diff.fileTooLarge': 'Este archivo es demasiado grande para mostrarlo',
   'diff.error': 'No se pudieron leer los cambios',
   'diff.tooLarge': 'Estos cambios son demasiado grandes para mostrarlos aquí',
+  'diff.filterConfigFailed': 'No se pudo leer toda la configuración de filtros de Git. No se realizó la comparación. Comprueba la configuración de Git y el límite de salida, y vuelve a intentarlo.',
   'diff.viewInBrowser': 'Ver en el navegador',
   'diff.noForkPoint': 'No se encontró el punto de bifurcación de esta rama; elige otro ámbito',
   'diff.empty': 'Sin cambios',
@@ -764,15 +979,16 @@ export const es: Record<ForgePanelKey, string> = {
   'duration.seconds': '{seconds}s',
   'duration.minutes': '{minutes} min {seconds} s',
   'duration.hours': '{hours} h {minutes} min',
-  'worktree.label': 'Árbol de trabajo',
+  'worktree.label': 'Nuevo árbol de trabajo',
   'worktree.hint': 'Ejecuta esta sesión en su propio árbol de trabajo: al enviar se crea una rama desde la elegida, sin que los cambios ni los commits afecten al directorio del proyecto',
-  'worktree.blocked.not-git': 'Este espacio de trabajo no es un repositorio Git y no puede usar un árbol de trabajo',
   'worktree.blocked.outside-writable-root': 'Los datos Git están fuera de los directorios con permiso de escritura, como cuando el espacio ya es un árbol de trabajo; aún no se puede usar otro árbol',
   'worktree.blocked.read-only': 'Una sesión de solo lectura no puede usar un árbol de trabajo',
   'worktree.base': 'Desde {branch}',
   'worktree.baseHead': 'Desde el HEAD actual',
   'worktree.baseMenu': 'Rama base',
   'worktree.currentBranch': 'Actual',
+  'worktree.currentBranchTip': 'Rama actual: {branch}',
+  'worktree.detachedTip': 'Sin rama activa · {commit}',
   'creation.title': 'Creando el árbol de trabajo',
   'creation.failed': 'No se pudo crear el árbol de trabajo',
   'creation.prepare': 'Crear la rama',
@@ -827,6 +1043,51 @@ export const es: Record<ForgePanelKey, string> = {
 
 /** French copy with the same keys. */
 export const fr: Record<ForgePanelKey, string> = {
+  'review.startReview': 'Commencer la revue',
+  'review.githubActions': 'Options de commentaire GitHub',
+  'review.publishing': 'Publication…',
+  'review.submitting': 'Envoi…',
+  'review.close': 'Fermer',
+  'review.pending': 'En attente',
+  'review.quoted': 'Ajouté au champ de saisie',
+  'review.yourComment': 'Votre commentaire',
+  'review.outdated': 'Code mis à jour',
+  'review.done': 'Terminé',
+  'review.addComment': 'Ajouter un commentaire',
+  'diff.resizeFileTree': 'Redimensionner l’arborescence',
+  'diff.fileTree': 'Arborescence des fichiers',
+  'diff.showFileTreeLeft': 'Afficher l’arborescence à gauche',
+  'diff.moveFileTreeRight': 'Déplacer l’arborescence à droite',
+  'guide.title': 'Revue de code et modifications',
+  'guide.description': 'Examiner les modifications du code et les demandes de modification de cette session',
+  'diff.hideFileTree': 'Masquer l’arborescence',
+  'review.range': 'Commenter {range}',
+  'review.comment': 'Laisser un commentaire…',
+  'review.cancel': 'Annuler',
+  'review.addToInput': 'Ajouter au champ de saisie',
+  'review.publish': 'Publier un commentaire seul',
+  'review.queue': 'Ajouter à la revue',
+  'review.selectLine': 'Sélectionner la ligne {line}',
+  'review.inputFailed': 'Impossible d’ajouter la référence. Réessayez plus tard.',
+  'review.saveFailed': 'Impossible d’enregistrer le brouillon. Vérifiez le stockage du navigateur.',
+  'review.unknown': 'Le résultat de l’envoi est inconnu. Vérifiez GitHub avant de republier.',
+  'review.submit': 'Envoyer la revue',
+  'review.summary': 'Résumé de la revue…',
+  'review.approve': 'Approuver',
+  'review.requestChanges': 'Demander des modifications',
+  'review.summaryRequired': 'Saisissez un résumé de la revue pour demander des modifications.',
+  'review.commentOnly': 'Commenter',
+  'review.drafts': 'Commentaires en attente ({count})',
+  'review.edit': 'Modifier',
+  'review.remove': 'Supprimer',
+  'review.stale': 'La PR contient de nouveaux commits. Actualisez et sélectionnez à nouveau les lignes.',
+  'review.published': 'Publié sur GitHub',
+  'review.submitted': 'Revue envoyée',
+  'review.failed': 'Échec de l’envoi : {message}',
+  'review.unsupported': 'Ce service ne prend pas en charge l’envoi de revues.',
+  'review.loadFailed': 'Impossible de lire les brouillons. Vérifiez le stockage du navigateur.',
+  'review.recheck': 'Voir sur GitHub',
+  'review.confirmRetry': 'Vérifié ; autoriser un nouvel envoi',
   'list.worktree': 'Dans son propre arbre de travail',
   'list.stateChecks': '{state} · {checks}',
   'list.more': '{count} demandes de changement supplémentaires',
@@ -845,7 +1106,7 @@ export const fr: Record<ForgePanelKey, string> = {
   'changes.title': 'Demandes de modification de cette session · {count}',
   'changes.empty': 'Cette session n’a pas encore de demande de modification',
   'changes.emptyHint': 'Les demandes liées à cette session apparaissent ici : créées, consultées, modifiées ou extraites, ou ouvertes sur ses branches actuelles ou envoyées',
-  'changes.local.title': 'Modifications',
+  'changes.local.title': 'Modifications locales',
   'changes.local.refs': '{head} → {base}',
   'changes.local.files': '{count} fichiers',
   'changes.local.viewAria': 'Voir les modifications de cette session : {count} fichiers, {added} lignes ajoutées et {deleted} supprimées',
@@ -871,12 +1132,17 @@ export const fr: Record<ForgePanelKey, string> = {
   'change.ci.running': 'Vérifications en cours',
   'change.ci.passed': 'Vérifications réussies',
   'change.ci.failed': '{count} vérifications échouées',
+  'change.ci.cancelled': '{count} vérifications annulées',
   'change.ci.failedUnlisted': 'Échec des vérifications',
   'change.checks.failed': '{count} échouées',
   'change.checks.running': '{count} en cours',
   'change.checks.passed': '{count} réussies',
+  'change.checks.cancelled': '{count} annulées',
   'change.checks.other': '{count} autres',
-  'change.checks.truncated': 'Seules les {count} premières sont affichées',
+  'change.checks.truncated': '{count} vérifications chargées ; d’autres sont disponibles',
+  'change.checks.loading': 'Chargement des autres vérifications',
+  'change.checks.loadFailed': 'Impossible de charger les autres vérifications : {message}',
+  'change.checks.retry': 'Réessayer le chargement',
   'change.check.running': 'En cours',
   'change.check.queued': 'En file d\'attente',
   'change.flag.changesRequested': 'Modifications demandées',
@@ -926,6 +1192,8 @@ export const fr: Record<ForgePanelKey, string> = {
   'diff.scopeNote.unstaged': 'Comparaison avec l’index, fichiers non suivis inclus',
   'diff.scopeNote.staged': 'Comparaison de l’index avec HEAD',
   'diff.allFiles': 'Les {count} fichiers',
+  'diff.filterFiles': 'Filtrer les fichiers…',
+  'diff.noMatchingFiles': 'Aucun fichier correspondant',
   'diff.refresh': 'Actualiser les modifications',
   'diff.expandAll': 'Développer tous les fichiers',
   'diff.collapseAll': 'Réduire tous les fichiers',
@@ -948,6 +1216,7 @@ export const fr: Record<ForgePanelKey, string> = {
   'diff.fileTooLarge': 'Ce fichier est trop volumineux pour être affiché',
   'diff.error': 'Impossible de lire les modifications',
   'diff.tooLarge': 'Ces modifications sont trop volumineuses pour être affichées ici',
+  'diff.filterConfigFailed': 'Impossible de lire toute la configuration des filtres Git. Aucune comparaison effectuée. Vérifiez la configuration Git et la limite de sortie, puis réessayez.',
   'diff.viewInBrowser': 'Voir dans le navigateur',
   'diff.noForkPoint': 'Le point de divergence de cette branche est introuvable ; choisissez une autre portée',
   'diff.empty': 'Aucune modification',
@@ -967,15 +1236,16 @@ export const fr: Record<ForgePanelKey, string> = {
   'duration.seconds': '{seconds}s',
   'duration.minutes': '{minutes} min {seconds} s',
   'duration.hours': '{hours} h {minutes} min',
-  'worktree.label': 'Arbre de travail',
+  'worktree.label': 'Nouvel arbre de travail',
   'worktree.hint': 'Exécutez cette session dans son propre arbre de travail : l’envoi crée une branche depuis celle choisie, sans que les modifications ou les commits affectent le dossier du projet',
-  'worktree.blocked.not-git': 'Cet espace de travail n’est pas un dépôt Git et ne peut pas utiliser d’arbre de travail',
   'worktree.blocked.outside-writable-root': 'Les données Git sont hors des dossiers accessibles en écriture, notamment lorsque l’espace est déjà un arbre de travail ; cette fonction n’est pas encore disponible',
   'worktree.blocked.read-only': 'Une session en lecture seule ne peut pas utiliser d’arbre de travail',
   'worktree.base': 'Depuis {branch}',
   'worktree.baseHead': 'Depuis le HEAD actuel',
   'worktree.baseMenu': 'Branche de base',
   'worktree.currentBranch': 'Actuelle',
+  'worktree.currentBranchTip': 'Branche actuelle : {branch}',
+  'worktree.detachedTip': 'Aucune branche active · {commit}',
   'creation.title': 'Création de l’arbre de travail',
   'creation.failed': 'Impossible de créer l’arbre de travail',
   'creation.prepare': 'Créer la branche',
@@ -1030,6 +1300,51 @@ export const fr: Record<ForgePanelKey, string> = {
 
 /** German copy with the same keys. */
 export const de: Record<ForgePanelKey, string> = {
+  'review.startReview': 'Review starten',
+  'review.githubActions': 'GitHub-Kommentaroptionen',
+  'review.publishing': 'Wird veröffentlicht…',
+  'review.submitting': 'Wird gesendet…',
+  'review.close': 'Schließen',
+  'review.pending': 'Ausstehend',
+  'review.quoted': 'Zum Eingabefeld hinzugefügt',
+  'review.yourComment': 'Dein Kommentar',
+  'review.outdated': 'Code aktualisiert',
+  'review.done': 'Fertig',
+  'review.addComment': 'Kommentar hinzufügen',
+  'diff.resizeFileTree': 'Dateibaum skalieren',
+  'diff.fileTree': 'Dateibaum',
+  'diff.showFileTreeLeft': 'Dateibaum links anzeigen',
+  'diff.moveFileTreeRight': 'Dateibaum nach rechts verschieben',
+  'guide.title': 'Code-Review und Änderungen',
+  'guide.description': 'Codeänderungen und Änderungsanfragen dieser Sitzung prüfen',
+  'diff.hideFileTree': 'Dateibaum ausblenden',
+  'review.range': '{range} kommentieren',
+  'review.comment': 'Kommentar schreiben…',
+  'review.cancel': 'Abbrechen',
+  'review.addToInput': 'Zum Eingabefeld hinzufügen',
+  'review.publish': 'Einzelnen Kommentar veröffentlichen',
+  'review.queue': 'Zur Review hinzufügen',
+  'review.selectLine': 'Zeile {line} auswählen',
+  'review.inputFailed': 'Die Referenz kann noch nicht eingefügt werden. Versuche es später erneut.',
+  'review.saveFailed': 'Der Entwurf konnte nicht gespeichert werden. Prüfe den Browserspeicher.',
+  'review.unknown': 'Das Ergebnis der Übermittlung ist unbekannt. Prüfe GitHub vor einer erneuten Veröffentlichung.',
+  'review.submit': 'Review absenden',
+  'review.summary': 'Zusammenfassung der Review…',
+  'review.approve': 'Genehmigen',
+  'review.requestChanges': 'Änderungen anfordern',
+  'review.summaryRequired': 'Gib eine Zusammenfassung des Reviews ein, um Änderungen anzufordern.',
+  'review.commentOnly': 'Kommentieren',
+  'review.drafts': 'Ausstehende Kommentare ({count})',
+  'review.edit': 'Bearbeiten',
+  'review.remove': 'Löschen',
+  'review.stale': 'Der PR enthält neue Commits. Aktualisiere die Ansicht und wähle die Zeilen erneut aus.',
+  'review.published': 'Auf GitHub veröffentlicht',
+  'review.submitted': 'Review abgesendet',
+  'review.failed': 'Übermittlung fehlgeschlagen: {message}',
+  'review.unsupported': 'Dieser Dienst unterstützt keine Review-Übermittlung.',
+  'review.loadFailed': 'Entwürfe konnten nicht gelesen werden. Prüfe den Browserspeicher.',
+  'review.recheck': 'Auf GitHub ansehen',
+  'review.confirmRetry': 'Geprüft; erneutes Senden erlauben',
   'list.worktree': 'Im eigenen Arbeitsbaum',
   'list.stateChecks': '{state} · {checks}',
   'list.more': '{count} weitere Änderungsanfragen',
@@ -1048,7 +1363,7 @@ export const de: Record<ForgePanelKey, string> = {
   'changes.title': 'Änderungsanfragen dieser Sitzung · {count}',
   'changes.empty': 'Diese Sitzung hat noch keine Änderungsanfragen',
   'changes.emptyHint': 'Hier erscheinen verknüpfte Änderungsanfragen: in dieser Sitzung erstellt, angesehen, bearbeitet oder ausgecheckt oder auf ihren aktuellen oder gepushten Branches geöffnet',
-  'changes.local.title': 'Änderungen',
+  'changes.local.title': 'Lokale Änderungen',
   'changes.local.refs': '{head} → {base}',
   'changes.local.files': '{count} Dateien',
   'changes.local.viewAria': 'Änderungen dieser Sitzung anzeigen: {count} Dateien, {added} Zeilen hinzugefügt, {deleted} Zeilen gelöscht',
@@ -1074,12 +1389,17 @@ export const de: Record<ForgePanelKey, string> = {
   'change.ci.running': 'Prüfungen laufen',
   'change.ci.passed': 'Prüfungen bestanden',
   'change.ci.failed': '{count} Prüfungen fehlgeschlagen',
+  'change.ci.cancelled': '{count} Prüfungen abgebrochen',
   'change.ci.failedUnlisted': 'Prüfungen fehlgeschlagen',
   'change.checks.failed': '{count} fehlgeschlagen',
   'change.checks.running': '{count} laufen',
   'change.checks.passed': '{count} bestanden',
+  'change.checks.cancelled': '{count} abgebrochen',
   'change.checks.other': '{count} weitere',
-  'change.checks.truncated': 'Nur die ersten {count} werden angezeigt',
+  'change.checks.truncated': '{count} Prüfungen geladen; weitere verfügbar',
+  'change.checks.loading': 'Weitere Prüfungen werden geladen',
+  'change.checks.loadFailed': 'Weitere Prüfungen konnten nicht geladen werden: {message}',
+  'change.checks.retry': 'Prüfungen erneut laden',
   'change.check.running': 'Läuft',
   'change.check.queued': 'In der Warteschlange',
   'change.flag.changesRequested': 'Änderungen angefordert',
@@ -1129,6 +1449,8 @@ export const de: Record<ForgePanelKey, string> = {
   'diff.scopeNote.unstaged': 'Vergleich mit dem Index, einschließlich nicht verfolgter Dateien',
   'diff.scopeNote.staged': 'Vergleich des Index mit HEAD',
   'diff.allFiles': 'Alle {count} Dateien',
+  'diff.filterFiles': 'Dateien filtern…',
+  'diff.noMatchingFiles': 'Keine passenden Dateien',
   'diff.refresh': 'Änderungen aktualisieren',
   'diff.expandAll': 'Alle Dateien aufklappen',
   'diff.collapseAll': 'Alle Dateien einklappen',
@@ -1151,6 +1473,7 @@ export const de: Record<ForgePanelKey, string> = {
   'diff.fileTooLarge': 'Diese Datei ist zu groß zum Anzeigen',
   'diff.error': 'Änderungen konnten nicht gelesen werden',
   'diff.tooLarge': 'Diese Änderungen sind zu groß, um sie hier anzuzeigen',
+  'diff.filterConfigFailed': 'Die Git-Filtereinstellungen konnten nicht vollständig gelesen werden. Es wurde kein Vergleich ausgeführt. Prüfe die Git-Einstellungen und das Ausgabelimit und versuche es erneut.',
   'diff.viewInBrowser': 'Im Browser ansehen',
   'diff.noForkPoint': 'Kein Verzweigungspunkt für diesen Branch gefunden; einen anderen Bereich wählen',
   'diff.empty': 'Keine Änderungen',
@@ -1170,15 +1493,16 @@ export const de: Record<ForgePanelKey, string> = {
   'duration.seconds': '{seconds} Sek.',
   'duration.minutes': '{minutes} Min. {seconds} Sek.',
   'duration.hours': '{hours} Std. {minutes} Min.',
-  'worktree.label': 'Arbeitsbaum',
+  'worktree.label': 'Neuer Arbeitsbaum',
   'worktree.hint': 'Diese Sitzung in einem eigenen Arbeitsbaum ausführen: Beim Senden wird aus dem gewählten Branch ein neuer erstellt; Änderungen und Commits lassen das Projektverzeichnis unverändert',
-  'worktree.blocked.not-git': 'Dieser Arbeitsbereich ist kein Git-Repository und kann keinen Arbeitsbaum verwenden',
   'worktree.blocked.outside-writable-root': 'Die Git-Daten liegen außerhalb der beschreibbaren Verzeichnisse, etwa wenn der Arbeitsbereich selbst ein Arbeitsbaum ist; Arbeitsbäume werden hier noch nicht unterstützt',
   'worktree.blocked.read-only': 'Eine schreibgeschützte Sitzung kann keinen Arbeitsbaum verwenden',
   'worktree.base': 'Aus {branch}',
   'worktree.baseHead': 'Aus dem aktuellen HEAD',
   'worktree.baseMenu': 'Basis-Branch',
   'worktree.currentBranch': 'Aktuell',
+  'worktree.currentBranchTip': 'Aktueller Branch: {branch}',
+  'worktree.detachedTip': 'Auf keinem Branch · {commit}',
   'creation.title': 'Arbeitsbaum wird erstellt',
   'creation.failed': 'Arbeitsbaum konnte nicht erstellt werden',
   'creation.prepare': 'Branch erstellen',
@@ -1233,6 +1557,51 @@ export const de: Record<ForgePanelKey, string> = {
 
 /** Russian copy with the same keys. */
 export const ru: Record<ForgePanelKey, string> = {
+  'review.startReview': 'Начать проверку',
+  'review.githubActions': 'Действия с комментарием GitHub',
+  'review.publishing': 'Публикация…',
+  'review.submitting': 'Отправка…',
+  'review.close': 'Закрыть',
+  'review.pending': 'Ожидает отправки',
+  'review.quoted': 'Добавлено в поле ввода',
+  'review.yourComment': 'Ваш комментарий',
+  'review.outdated': 'Код обновлён',
+  'review.done': 'Готово',
+  'review.addComment': 'Добавить комментарий',
+  'diff.resizeFileTree': 'Изменить ширину дерева файлов',
+  'diff.fileTree': 'Дерево файлов',
+  'diff.showFileTreeLeft': 'Показать дерево файлов слева',
+  'diff.moveFileTreeRight': 'Переместить дерево файлов вправо',
+  'guide.title': 'Ревью кода и изменения',
+  'guide.description': 'Просмотр изменений кода и запросов на изменение в этом сеансе',
+  'diff.hideFileTree': 'Скрыть дерево файлов',
+  'review.range': 'Комментарий к {range}',
+  'review.comment': 'Оставьте комментарий…',
+  'review.cancel': 'Отмена',
+  'review.addToInput': 'Добавить в поле ввода',
+  'review.publish': 'Опубликовать отдельный комментарий',
+  'review.queue': 'Добавить в проверку',
+  'review.selectLine': 'Выбрать строку {line}',
+  'review.inputFailed': 'Не удалось добавить ссылку. Повторите попытку позже.',
+  'review.saveFailed': 'Не удалось сохранить черновик. Проверьте хранилище браузера.',
+  'review.unknown': 'Результат отправки неизвестен. Проверьте GitHub перед повторной публикацией.',
+  'review.submit': 'Отправить проверку',
+  'review.summary': 'Итог проверки…',
+  'review.approve': 'Одобрить',
+  'review.requestChanges': 'Запросить изменения',
+  'review.summaryRequired': 'Чтобы запросить изменения, добавьте итоговый комментарий.',
+  'review.commentOnly': 'Комментарий',
+  'review.drafts': 'Ожидающие комментарии ({count})',
+  'review.edit': 'Изменить',
+  'review.remove': 'Удалить',
+  'review.stale': 'В PR появились новые коммиты. Обновите и выберите строки заново.',
+  'review.published': 'Опубликовано на GitHub',
+  'review.submitted': 'Проверка отправлена',
+  'review.failed': 'Ошибка отправки: {message}',
+  'review.unsupported': 'Этот сервис не поддерживает отправку проверок.',
+  'review.loadFailed': 'Не удалось прочитать черновики. Проверьте хранилище браузера.',
+  'review.recheck': 'Открыть на GitHub',
+  'review.confirmRetry': 'Проверено; разрешить повторную отправку',
   'list.worktree': 'В собственном рабочем дереве',
   'list.stateChecks': '{state} · {checks}',
   'list.more': 'Ещё запросов на изменение: {count}',
@@ -1251,7 +1620,7 @@ export const ru: Record<ForgePanelKey, string> = {
   'changes.title': 'Запросы на изменение этого сеанса · {count}',
   'changes.empty': 'В этом сеансе пока нет запросов на изменение',
   'changes.emptyHint': 'Здесь отображаются связанные с сеансом запросы: созданные, просмотренные, изменённые или извлечённые, а также открытые для текущей или отправленной ветки',
-  'changes.local.title': 'Изменения',
+  'changes.local.title': 'Локальные изменения',
   'changes.local.refs': '{head} → {base}',
   'changes.local.files': 'Файлов: {count}',
   'changes.local.viewAria': 'Просмотреть изменения сеанса: файлов — {count}, добавлено строк — {added}, удалено — {deleted}',
@@ -1277,12 +1646,17 @@ export const ru: Record<ForgePanelKey, string> = {
   'change.ci.running': 'Проверки выполняются',
   'change.ci.passed': 'Проверки пройдены',
   'change.ci.failed': 'Не пройдено проверок: {count}',
+  'change.ci.cancelled': 'Проверок отменено: {count}',
   'change.ci.failedUnlisted': 'Проверки не пройдены',
   'change.checks.failed': 'Не пройдено: {count}',
   'change.checks.running': 'Выполняется: {count}',
   'change.checks.passed': 'Пройдено: {count}',
+  'change.checks.cancelled': 'Отменено: {count}',
   'change.checks.other': 'Других: {count}',
-  'change.checks.truncated': 'Показаны только первые {count}',
+  'change.checks.truncated': 'Загружено проверок: {count}; доступны другие',
+  'change.checks.loading': 'Загрузка остальных проверок',
+  'change.checks.loadFailed': 'Не удалось загрузить остальные проверки: {message}',
+  'change.checks.retry': 'Повторить загрузку проверок',
   'change.check.running': 'Выполняется',
   'change.check.queued': 'В очереди',
   'change.flag.changesRequested': 'Запрошены изменения',
@@ -1332,6 +1706,8 @@ export const ru: Record<ForgePanelKey, string> = {
   'diff.scopeNote.unstaged': 'Сравнение с индексом, включая неотслеживаемые файлы',
   'diff.scopeNote.staged': 'Сравнение индекса с HEAD',
   'diff.allFiles': 'Все файлы: {count}',
+  'diff.filterFiles': 'Фильтр файлов…',
+  'diff.noMatchingFiles': 'Нет подходящих файлов',
   'diff.refresh': 'Обновить изменения',
   'diff.expandAll': 'Развернуть все файлы',
   'diff.collapseAll': 'Свернуть все файлы',
@@ -1354,6 +1730,7 @@ export const ru: Record<ForgePanelKey, string> = {
   'diff.fileTooLarge': 'Файл слишком большой для отображения',
   'diff.error': 'Не удалось прочитать изменения',
   'diff.tooLarge': 'Изменения слишком велики для отображения здесь',
+  'diff.filterConfigFailed': 'Не удалось полностью прочитать настройки фильтров Git. Сравнение не выполнено. Проверьте настройки Git и ограничение вывода, затем повторите попытку.',
   'diff.viewInBrowser': 'Посмотреть в браузере',
   'diff.noForkPoint': 'Не найдена точка ответвления этой ветки; выберите другую область',
   'diff.empty': 'Нет изменений',
@@ -1373,15 +1750,16 @@ export const ru: Record<ForgePanelKey, string> = {
   'duration.seconds': '{seconds} с',
   'duration.minutes': '{minutes} мин {seconds} с',
   'duration.hours': '{hours} ч {minutes} мин',
-  'worktree.label': 'Рабочее дерево',
+  'worktree.label': 'Новое рабочее дерево',
   'worktree.hint': 'Запустить сеанс в отдельном рабочем дереве: при отправке будет создана ветка на основе выбранной, а изменения и коммиты не затронут каталог проекта',
-  'worktree.blocked.not-git': 'Рабочая область не является репозиторием Git, поэтому рабочее дерево недоступно',
   'worktree.blocked.outside-writable-root': 'Данные Git находятся вне доступных для записи каталогов, например когда рабочая область сама является рабочим деревом; создание рабочего дерева пока недоступно',
   'worktree.blocked.read-only': 'Сеанс только для чтения не может использовать рабочее дерево',
   'worktree.base': 'На основе {branch}',
   'worktree.baseHead': 'На основе текущего HEAD',
   'worktree.baseMenu': 'Базовая ветка',
   'worktree.currentBranch': 'Текущая',
+  'worktree.currentBranchTip': 'Текущая ветка: {branch}',
+  'worktree.detachedTip': 'Вне ветки · {commit}',
   'creation.title': 'Создание рабочего дерева',
   'creation.failed': 'Не удалось создать рабочее дерево',
   'creation.prepare': 'Создать ветку',
@@ -1436,6 +1814,51 @@ export const ru: Record<ForgePanelKey, string> = {
 
 /** Portuguese copy with the same keys. */
 export const pt: Record<ForgePanelKey, string> = {
+  'review.startReview': 'Iniciar revisão',
+  'review.githubActions': 'Opções de comentário do GitHub',
+  'review.publishing': 'Publicando…',
+  'review.submitting': 'Enviando…',
+  'review.close': 'Fechar',
+  'review.pending': 'Pendente',
+  'review.quoted': 'Adicionado ao campo de entrada',
+  'review.yourComment': 'Seu comentário',
+  'review.outdated': 'Código atualizado',
+  'review.done': 'Concluído',
+  'review.addComment': 'Adicionar comentário',
+  'diff.resizeFileTree': 'Redimensionar árvore de arquivos',
+  'diff.fileTree': 'Árvore de arquivos',
+  'diff.showFileTreeLeft': 'Mostrar árvore de arquivos à esquerda',
+  'diff.moveFileTreeRight': 'Mover árvore de arquivos para a direita',
+  'guide.title': 'Revisão de código e alterações',
+  'guide.description': 'Revisar alterações de código e solicitações de alteração desta sessão',
+  'diff.hideFileTree': 'Ocultar árvore de arquivos',
+  'review.range': 'Comentar {range}',
+  'review.comment': 'Deixe um comentário…',
+  'review.cancel': 'Cancelar',
+  'review.addToInput': 'Adicionar ao campo de entrada',
+  'review.publish': 'Publicar comentário individual',
+  'review.queue': 'Adicionar à revisão',
+  'review.selectLine': 'Selecionar linha {line}',
+  'review.inputFailed': 'Não foi possível adicionar a referência. Tente novamente mais tarde.',
+  'review.saveFailed': 'Não foi possível salvar o rascunho. Verifique o armazenamento do navegador.',
+  'review.unknown': 'O resultado do envio é desconhecido. Verifique o GitHub antes de publicar novamente.',
+  'review.submit': 'Enviar revisão',
+  'review.summary': 'Resumo da revisão…',
+  'review.approve': 'Aprovar',
+  'review.requestChanges': 'Solicitar alterações',
+  'review.summaryRequired': 'Escreva um resumo da revisão para solicitar alterações.',
+  'review.commentOnly': 'Comentar',
+  'review.drafts': 'Comentários pendentes ({count})',
+  'review.edit': 'Editar',
+  'review.remove': 'Excluir',
+  'review.stale': 'O PR tem novos commits. Atualize e selecione as linhas novamente.',
+  'review.published': 'Publicado no GitHub',
+  'review.submitted': 'Revisão enviada',
+  'review.failed': 'Falha no envio: {message}',
+  'review.unsupported': 'Este serviço não oferece envio de revisões.',
+  'review.loadFailed': 'Não foi possível ler os rascunhos. Verifique o armazenamento do navegador.',
+  'review.recheck': 'Ver no GitHub',
+  'review.confirmRetry': 'Verificado; permitir reenvio',
   'list.worktree': 'Na sua própria árvore de trabalho',
   'list.stateChecks': '{state} · {checks}',
   'list.more': 'Mais {count} solicitações de alteração',
@@ -1454,7 +1877,7 @@ export const pt: Record<ForgePanelKey, string> = {
   'changes.title': 'Solicitações de alteração desta sessão · {count}',
   'changes.empty': 'Esta sessão ainda não tem solicitações de alteração',
   'changes.emptyHint': 'Aqui aparecem solicitações vinculadas à sessão: criadas, visualizadas, editadas ou usadas em checkout, ou abertas nas branches atuais ou enviadas',
-  'changes.local.title': 'Alterações',
+  'changes.local.title': 'Alterações locais',
   'changes.local.refs': '{head} → {base}',
   'changes.local.files': '{count} arquivos',
   'changes.local.viewAria': 'Ver alterações desta sessão: {count} arquivos, {added} linhas adicionadas e {deleted} removidas',
@@ -1480,12 +1903,17 @@ export const pt: Record<ForgePanelKey, string> = {
   'change.ci.running': 'Verificações em andamento',
   'change.ci.passed': 'Verificações aprovadas',
   'change.ci.failed': '{count} verificações falharam',
+  'change.ci.cancelled': '{count} verificações canceladas',
   'change.ci.failedUnlisted': 'As verificações falharam',
   'change.checks.failed': '{count} falharam',
   'change.checks.running': '{count} em andamento',
   'change.checks.passed': '{count} aprovadas',
+  'change.checks.cancelled': '{count} canceladas',
   'change.checks.other': '{count} outras',
-  'change.checks.truncated': 'Apenas as primeiras {count} são exibidas',
+  'change.checks.truncated': '{count} verificações carregadas; há mais',
+  'change.checks.loading': 'Carregando mais verificações',
+  'change.checks.loadFailed': 'Não foi possível carregar mais verificações: {message}',
+  'change.checks.retry': 'Tentar carregar verificações novamente',
   'change.check.running': 'Em andamento',
   'change.check.queued': 'Na fila',
   'change.flag.changesRequested': 'Alterações solicitadas',
@@ -1535,6 +1963,8 @@ export const pt: Record<ForgePanelKey, string> = {
   'diff.scopeNote.unstaged': 'Comparação com o índice, incluindo arquivos não rastreados',
   'diff.scopeNote.staged': 'Comparação do índice com HEAD',
   'diff.allFiles': 'Todos os {count} arquivos',
+  'diff.filterFiles': 'Filtrar arquivos…',
+  'diff.noMatchingFiles': 'Nenhum arquivo correspondente',
   'diff.refresh': 'Atualizar alterações',
   'diff.expandAll': 'Expandir todos os arquivos',
   'diff.collapseAll': 'Recolher todos os arquivos',
@@ -1557,6 +1987,7 @@ export const pt: Record<ForgePanelKey, string> = {
   'diff.fileTooLarge': 'Este arquivo é grande demais para ser exibido',
   'diff.error': 'Não foi possível ler as alterações',
   'diff.tooLarge': 'Estas alterações são grandes demais para serem exibidas aqui',
+  'diff.filterConfigFailed': 'Não foi possível ler todas as configurações de filtros do Git. A comparação não foi executada. Verifique as configurações do Git e o limite de saída e tente novamente.',
   'diff.viewInBrowser': 'Ver no navegador',
   'diff.noForkPoint': 'Não foi encontrado o ponto de ramificação desta branch; escolha outro escopo',
   'diff.empty': 'Sem alterações',
@@ -1576,15 +2007,16 @@ export const pt: Record<ForgePanelKey, string> = {
   'duration.seconds': '{seconds}s',
   'duration.minutes': '{minutes} min {seconds} s',
   'duration.hours': '{hours} h {minutes} min',
-  'worktree.label': 'Árvore de trabalho',
+  'worktree.label': 'Nova árvore de trabalho',
   'worktree.hint': 'Execute esta sessão em sua própria árvore de trabalho: o envio cria uma branch a partir da escolhida, sem que alterações e commits afetem o diretório do projeto',
-  'worktree.blocked.not-git': 'Este espaço de trabalho não é um repositório Git e não pode usar uma árvore de trabalho',
   'worktree.blocked.outside-writable-root': 'Os dados Git estão fora dos diretórios graváveis, como quando o espaço já é uma árvore de trabalho; ainda não é possível usar outra árvore',
   'worktree.blocked.read-only': 'Uma sessão somente leitura não pode usar uma árvore de trabalho',
   'worktree.base': 'A partir de {branch}',
   'worktree.baseHead': 'A partir do HEAD atual',
   'worktree.baseMenu': 'Branch base',
   'worktree.currentBranch': 'Atual',
+  'worktree.currentBranchTip': 'Branch atual: {branch}',
+  'worktree.detachedTip': 'Fora de uma branch · {commit}',
   'creation.title': 'Criando a árvore de trabalho',
   'creation.failed': 'Não foi possível criar a árvore de trabalho',
   'creation.prepare': 'Criar a branch',
diff --git a/packages/experimental/client-ui-forge/src/client/mount.ts b/packages/experimental/client-ui-forge/src/client/mount.ts
index f5ae8469d8..cd3aaa4c3d 100644
--- a/packages/experimental/client-ui-forge/src/client/mount.ts
+++ b/packages/experimental/client-ui-forge/src/client/mount.ts
@@ -6,6 +6,7 @@ import type {} from '@deepseek-ai/dsh-api-session-controller/client'
 import type {} from '@deepseek-ai/dsh-client-locale/client'
 import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
 import type {} from '@deepseek-ai/dsh-client-ui-layout/client'
+import { IconBranchOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {} from '@deepseek-ai/dsh-client-ui-renderer/client'
 import type {} from '@deepseek-ai/dsh-client-ui-sidebar-right/client'
 import type { HostObservable } from '@deepseek-ai/dsh-client-ui-slots'
@@ -14,6 +15,8 @@ import type {} from '@deepseek-ai/dsh-experimental-client-ui-forge/remote'
 import type { SessionId } from '@deepseek-ai/dsh-session/types'
 import type { RemoteResult, TypertRemoteContribution } from '@deepseek-ai/dsh-typert-protocol'
 import type { ForgeChangeRequestListState, ForgeChangeRequestStatesFrame, ForgePanelChangeRequest } from '../types.ts'
+import { ReviewQueue } from './review-queue.ts'
+import { formatReviewComment, type ReviewSelection } from './review.ts'
 import { ActionToast } from './ActionToast.tsx'
 import { CHANGES_ID, changesDefinition } from './changes-address.ts'
 import { createChangesStore } from './changes-store.ts'
@@ -54,6 +57,7 @@ function openLink(url: string): void {
 interface SessionStores {
   readonly panel: PanelSource
   readonly visibility: VisibilitySource
+  readonly reviews: WeakMap<AbortSignal, ReviewQueue>
   readonly release: () => void
 }
 
@@ -79,7 +83,7 @@ function registerUi(ctx: Context): void {
         panel.close()
         stores.delete(sessionId)
       }, 'forge-panel: release Session state')
-      store = { panel, visibility: createVisibilitySource(), release: () => { void dispose() } }
+      store = { panel, visibility: createVisibilitySource(), reviews: new WeakMap(), release: () => { void dispose() } }
       stores.set(sessionId, store)
     }
     return store
@@ -110,6 +114,16 @@ function registerUi(ctx: Context): void {
       () => { notices.report('toast.promptFailed') },
     )
   }
+  const addReviewToInput = (sessionId: SessionId, selection: ReviewSelection): boolean => {
+    const scope = ctx.sessions.scope(sessionId)
+    const conversation = scope?.get('conversation')
+    if (scope === undefined || conversation === undefined) return false
+    const input = conversation.input.for(scope)
+    const numbers = Array.from(input.state.getSnapshot().draft.matchAll(/(?:^|\n)(?:> )?## User Comment (\d+)/g), match => Number(match[1]))
+    if (!input.insertQuote(formatReviewComment(selection, Math.max(0, ...numbers) + 1))) return false
+    input.focus()
+    return true
+  }
   /** How toasts name a change request: its number, else its title, else its URL. */
   const nameOf = (entry: ForgePanelChangeRequest): string => {
     const number = numberOf(entry)
@@ -153,6 +167,11 @@ function registerUi(ctx: Context): void {
         settled(await ctx.remote.forgePanel.refresh(sessionId), 'toast.refreshFailed')
       },
       remove: (entry) => { remove(sessionId, entry) },
+      readChecks: async (url, headSha, signal) => {
+        const result = await ctx.remote.forgePanel.changeRequestChecks(sessionId, url, headSha, signal)
+        if (!result.ok) throw new Error(result.error.message)
+        return result.value
+      },
       markReady: async (entry) => {
         const result = await ctx.remote.forgePanel.markReady(sessionId, entry.url)
         if (result.ok) notices.report('toast.markedReady', { tone: 'success', params: { name: nameOf(entry) } })
@@ -185,10 +204,33 @@ function registerUi(ctx: Context): void {
       localText: (scope, path) => ctx.remote.forgePanel.localText(sessionId, scope, path),
       changeRequestDiff: (url, signal) => ctx.remote.forgePanel.changeRequestDiff(sessionId, url, signal),
       changeRequestText: (url, commit, path) => ctx.remote.forgePanel.changeRequestText(sessionId, url, commit, path),
+      addReviewToInput: selection => addReviewToInput(sessionId, selection),
+      reviewQueue: ({ id, signal }) => {
+        let queue = store.reviews.get(signal)
+        if (queue === undefined) {
+          const records = new ReviewQueue(`dsh.forge-review.tab.v1.${JSON.stringify([sessionId, id])}`)
+          queue = records
+          store.reviews.set(signal, records)
+          const clear = (): void => { if (!records.close()) notices.report('review.saveFailed') }
+          if (signal.aborted) clear()
+          else {
+            const release = ctx.effect(() => {
+              const close = (): void => { clear(); void release() }
+              signal.addEventListener('abort', close, { once: true })
+              return () => { signal.removeEventListener('abort', close) }
+            }, 'forge-panel: review tab lifetime')
+          }
+        }
+        return queue
+      },
+      submitReview: (url, request) => ctx.remote.forgePanel.submitReview(sessionId, url, request),
       openLink,
       copyPath,
       createChangeRequest: () => { createChangeRequest(sessionId) },
-      report: (key, params) => { notices.report(key, params === undefined ? {} : { params }) },
+      report: (key, params) => {
+        notices.report(key, { tone: key === 'review.published' || key === 'review.submitted' ? 'success' : 'failure',
+          ...params === undefined ? {} : { params } })
+      },
     }
   }
   const progressFace = (sessionId: SessionId): WorktreeProgressInjected => {
@@ -223,7 +265,12 @@ function registerUi(ctx: Context): void {
       },
     }
   }
-  ctx.effect(() => ctx.sidebarRightTabs.register({ id: TAB_ID, kind: TAB_KIND, title: () => t('tab.title') }), 'forge-panel: sidebar tab')
+  ctx.effect(() => ctx.sidebarRightTabs.register({
+    id: TAB_ID, kind: TAB_KIND, title: () => t('tab.title'),
+    guide: [{
+      id: 'review', order: 15, title: () => t('guide.title'), description: () => t('guide.description'), icon: IconBranchOutlineRegular,
+    }],
+  }), 'forge-panel: sidebar tab')
   ctx.slots.inject('sidebar.right.pane.tab', () => ctx.slots.register({
     name: 'sidebar.right.pane.tab', key: TAB_ID, locale: NS, inject: tabFace,
   }, ForgeTab))
diff --git a/packages/experimental/client-ui-forge/src/client/review-queue.ts b/packages/experimental/client-ui-forge/src/client/review-queue.ts
new file mode 100644
index 0000000000..bb396cfd26
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/review-queue.ts
@@ -0,0 +1,258 @@
+/** Browser-persisted review drafts and the write whose outcome still needs confirmation. */
+
+import { z } from 'zod'
+import type { ForgeReviewRequest } from '@deepseek-ai/dsh-experimental-forge/types'
+import type { ReviewSelection, ReviewSource } from './review.ts'
+
+const line = z.object({ path: z.string(), side: z.enum(['L', 'R']), startLine: z.number().int().positive(), endLine: z.number().int().positive(), body: z.string() })
+const selection = z.object({ source: z.object({ kind: z.literal('change'), url: z.string(), headSha: z.string() }), comment: line.extend({ hunk: z.string() }) })
+const recordedSelection = selection.extend({ source: z.discriminatedUnion('kind', [
+  selection.shape.source, z.object({ kind: z.literal('local'), scope: z.string() }),
+]) })
+const record = z.discriminatedUnion('kind', [
+  z.object({ kind: z.literal('agent'), selection: recordedSelection }),
+  z.object({ kind: z.literal('published'), selection: recordedSelection, url: z.url({ protocol: /^https$/ }) }),
+])
+const event = z.enum(['comment', 'approve', 'request-changes'])
+const request = z.discriminatedUnion('kind', [
+  z.object({ kind: z.literal('comment'), headSha: z.string(), comment: line }),
+  z.object({ kind: z.literal('review'), headSha: z.string(), event, body: z.string(), comments: z.array(line) }),
+])
+const saved = z.object({
+  comments: z.array(selection), records: z.array(record).default([]), body: z.string(), event, uncertain: request.nullable(),
+})
+
+/** A comment retained after adding its reference or receiving a publication receipt. */
+export type ReviewRecord =
+  | { readonly kind: 'agent'; readonly selection: ReviewSelection }
+  | { readonly kind: 'published'; readonly selection: ReviewSelection; readonly url: string }
+
+/** One inline record; its numeric key belongs only to the retained browser store. */
+export type ReviewThread = { readonly key: number } & (ReviewRecord | { readonly kind: 'pending'; readonly selection: ReviewSelection })
+
+/** File-scoped snapshot that does not change while unrelated comments or the summary are edited. */
+export interface FileReviewState {
+  readonly threads: readonly ReviewThread[]
+  readonly locked: boolean
+  readonly error: ReviewQueueState['error']
+}
+
+/** Stable snapshot for a file without a comment store. */
+export const EMPTY_FILE_REVIEW: FileReviewState = { threads: [], locked: false, error: null }
+
+/** Immutable queue snapshot; errors leave the original stored bytes untouched. */
+export interface ReviewQueueState {
+  readonly comments: readonly ReviewSelection[]
+  readonly records: readonly ReviewRecord[]
+  readonly body: string
+  readonly event: 'comment' | 'approve' | 'request-changes'
+  readonly uncertain: ForgeReviewRequest | null
+  readonly error: 'load' | 'save' | null
+}
+
+/** Initial state of a newly opened review tab. */
+export const EMPTY_REVIEW: ReviewQueueState = { comments: [], records: [], body: '', event: 'comment', uncertain: null, error: null }
+
+/** One review tab's drafts and records, retained until its occurrence closes. */
+export class ReviewQueue {
+  private closed = false
+  private state: ReviewQueueState = EMPTY_REVIEW
+  private readonly listeners = new Set<() => void>()
+  private readonly keys = new WeakMap<ReviewSelection, number>()
+  private nextKey = 0
+  private readonly files = new Map<string, FileReviewState>()
+
+  /** @param key - browser storage key including Session and tab identity. */
+  constructor(private readonly key: string) {
+    try {
+      const raw = localStorage.getItem(key)
+      if (raw !== null) this.state = { ...saved.parse(JSON.parse(raw)), error: null }
+    } catch (_error) {
+      this.state = { ...EMPTY_REVIEW, error: 'load' }
+    }
+  }
+
+  /** Current queue snapshot, stable between edits and storage failures. */
+  readonly getSnapshot = (): ReviewQueueState => this.state
+
+  /**
+   * Clear this tab's records and refuse later completions from its outgoing requests.
+   * @returns whether its browser storage was cleared; the in-memory state always closes.
+   */
+  close(): boolean {
+    this.closed = true
+    this.state = EMPTY_REVIEW
+    this.files.clear()
+    this.emit()
+    this.listeners.clear()
+    try {
+      localStorage.removeItem(this.key)
+    } catch (_error) {
+      return false
+    }
+    return true
+  }
+
+  /** Summary subscribed by the surrounding diff; editing draft text does not invalidate its file rows. */
+  readonly getStatus = (): string => `${this.state.comments.length}:${this.state.records.length}:${this.state.error ?? ''}:${this.state.uncertain === null ? 'idle' : 'pending'}`
+
+  /**
+   * Read stable inline records for one path and review source.
+   * @param path - repository-relative file path.
+   * @param source - PR or local scope; older head commits remain available as outdated comments.
+   * @returns records and edit availability, reusing the snapshot when these values are unchanged.
+   */
+  fileComments(path: string, source: ReviewSource): FileReviewState {
+    const matches = (item: ReviewSelection): boolean => item.comment.path === path && sameReviewSource(item.source, source)
+    const threads: ReviewThread[] = [
+      ...this.state.records.filter(item => matches(item.selection)).map(item => ({ ...item, key: this.keyOf(item.selection) })),
+      ...this.state.comments.filter(matches).map(item => ({ kind: 'pending' as const, selection: item, key: this.keyOf(item) })),
+    ]
+    const key = JSON.stringify([path, source.kind, source.kind === 'local' ? source.scope : source.url])
+    const previous = this.files.get(key)
+    const locked = this.state.uncertain !== null
+    if (previous !== undefined && previous.locked === locked && previous.error === this.state.error
+      && previous.threads.length === threads.length && previous.threads.every((item, index) => {
+      const next = threads[index]
+      return next?.selection === item.selection && next.kind === item.kind
+    })) return previous
+    const value = { threads, locked, error: this.state.error }
+    this.files.set(key, value)
+    return value
+  }
+
+  /**
+   * Retain an Agent reference at its original code location.
+   * @param selection - reference already accepted by the main composer.
+   * @returns whether the record was saved.
+   */
+  recordAgent(selection: ReviewSelection): boolean {
+    return this.save({ ...this.state, records: [...this.state.records, { kind: 'agent', selection }] })
+  }
+
+  /**
+   * Retain a published comment and settle its outgoing write atomically in browser storage.
+   * @param selection - published comment's frozen code location.
+   * @param url - confirmed publication URL.
+   * @returns whether the receipt and comment were saved.
+   */
+  published(selection: ReviewSelection, url: string): boolean {
+    return this.save({ ...this.state, uncertain: null, records: [...this.state.records, { kind: 'published', selection, url }] })
+  }
+
+  /**
+   * Observe queue edits and storage failures.
+   * @param listener - snapshot invalidation.
+   * @returns unsubscribe.
+   */
+  readonly subscribe = (listener: () => void): (() => void) => {
+    this.listeners.add(listener)
+    return () => { this.listeners.delete(listener) }
+  }
+
+  /**
+   * Save a frozen PR comment unless a write needs reconciliation.
+   * @param selection - frozen PR comment.
+   * @returns whether it was saved.
+   */
+  add(selection: ReviewSelection): boolean {
+    if (selection.source.kind !== 'change' || this.state.uncertain !== null) return false
+    return this.save({ ...this.state, comments: [...this.state.comments, selection] })
+  }
+
+  /**
+   * Edit or remove a pending comment without changing its captured lines.
+   * @param index - comment position.
+   * @param body - replacement text, or null to remove.
+   * @returns whether saved.
+   */
+  edit(index: number, body: string | null): boolean {
+    if (this.state.uncertain !== null) return false
+    return this.save({ ...this.state, comments: this.state.comments.flatMap((item, at) => {
+      if (at !== index) return [item]
+      if (body === null) return []
+      const next = { ...item, comment: { ...item.comment, body } }
+      this.keys.set(next, this.keyOf(item))
+      return [next]
+    }) })
+  }
+
+  /**
+   * Edit the currently pending occurrence addressed by an inline record.
+   * @param key - browser-store identity from fileComments.
+   * @param body - replacement text, or null to remove.
+   * @returns whether the occurrence still exists and the edit was saved.
+   */
+  editThread(key: number, body: string | null): boolean {
+    const index = this.state.comments.findIndex(item => this.keyOf(item) === key)
+    return index !== -1 && this.edit(index, body)
+  }
+
+  /**
+   * Save the summary and decision for the pending review.
+   * @param body - review summary.
+   * @param event - review decision.
+   * @returns whether saved.
+   */
+  summarize(body: string, event: ReviewQueueState['event']): boolean {
+    if (this.state.uncertain !== null) return false
+    return this.save({ ...this.state, body, event })
+  }
+
+  /**
+   * Persist the outgoing request before network dispatch.
+   * @param request - exact write.
+   * @returns whether dispatch may start.
+   */
+  begin(request: ForgeReviewRequest): boolean {
+    if (this.state.uncertain !== null) return false
+    return this.save({ ...this.state, uncertain: request })
+  }
+
+  /**
+   * Clear the write after a known result or explicit reconciliation.
+   * @param submitted - whether a batch review was published.
+   * @param url - confirmed publication URL when retaining submitted comments.
+   * @returns whether saved.
+   */
+  finish(submitted: boolean, url?: string): boolean {
+    if (!submitted) return this.save({ ...this.state, uncertain: null })
+    const records = url === undefined ? this.state.records : [...this.state.records,
+      ...this.state.comments.map(item => ({ kind: 'published' as const, selection: item, url }))]
+    return this.save({ ...EMPTY_REVIEW, records })
+  }
+
+  private keyOf(selection: ReviewSelection): number {
+    let key = this.keys.get(selection)
+    if (key === undefined) { key = ++this.nextKey; this.keys.set(selection, key) }
+    return key
+  }
+
+  private save(state: ReviewQueueState): boolean {
+    if (this.closed || this.state.error === 'load') return false
+    try {
+      const { error: _error, ...value } = state
+      localStorage.setItem(this.key, JSON.stringify(value))
+    } catch (_error) {
+      this.state = { ...this.state, error: 'save' }
+      this.emit()
+      return false
+    }
+    this.state = { ...state, error: null }
+    this.emit()
+    return true
+  }
+
+  private emit(): void { for (const listener of this.listeners) listener() }
+}
+
+/**
+ * Compare review identity while allowing records from an older PR head to remain visible.
+ * @param left - recorded source.
+ * @param right - displayed source.
+ * @returns whether the sources name the same PR or local scope.
+ */
+export function sameReviewSource(left: ReviewSource, right: ReviewSource): boolean {
+  return left.kind === 'local' ? right.kind === 'local' && left.scope === right.scope
+    : right.kind === 'change' && left.url === right.url
+}
diff --git a/packages/experimental/client-ui-forge/src/client/review.ts b/packages/experimental/client-ui-forge/src/client/review.ts
new file mode 100644
index 0000000000..034d6cad42
--- /dev/null
+++ b/packages/experimental/client-ui-forge/src/client/review.ts
@@ -0,0 +1,83 @@
+/** Frozen line selections shared by the diff UI, composer references, and review submission. */
+
+import type { ForgeDiffFile } from '../types.ts'
+
+/** A comment on consecutive lines of one side of one displayed hunk. */
+export interface ReviewComment {
+  /** Repository-relative destination path, including for renamed files. */
+  readonly path: string
+  /** Old or new side of the displayed diff. */
+  readonly side: 'L' | 'R'
+  /** First selected line, inclusive. */
+  readonly startLine: number
+  /** Last selected line, inclusive. */
+  readonly endLine: number
+  /** Complete displayed hunk captured before subsequent file changes. */
+  readonly hunk: string
+  /** User's plain-text comment. */
+  readonly body: string
+}
+
+/** The immutable source from which a comment was selected. */
+export type ReviewSource =
+  | { readonly kind: 'local'; readonly scope: string }
+  | { readonly kind: 'change'; readonly url: string; readonly headSha: string }
+
+/** One selected range and the source the user saw. */
+export interface ReviewSelection {
+  readonly source: ReviewSource
+  readonly comment: ReviewComment
+}
+
+/**
+ * Capture a range only when both endpoints belong to the same displayed hunk.
+ * @param file - loaded diff file.
+ * @param side - selected side.
+ * @param from - first gesture endpoint.
+ * @param to - current gesture endpoint.
+ * @returns a frozen selection, or undefined for unchanged gaps or cross-hunk ranges.
+ */
+export function selectReviewLines(file: ForgeDiffFile, side: 'L' | 'R', from: number, to: number): ReviewComment | undefined {
+  const startLine = Math.min(from, to)
+  const endLine = Math.max(from, to)
+  const hunk = file.hunks.find((item) => {
+    const start = side === 'L' ? item.oldStart : item.newStart
+    const count = side === 'L' ? item.oldLines : item.newLines
+    return startLine >= start && endLine < start + count
+  })
+  if (hunk === undefined) return undefined
+  const oldStart = hunk.oldLines === 0 ? hunk.oldStart - 1 : hunk.oldStart
+  const newStart = hunk.newLines === 0 ? hunk.newStart - 1 : hunk.newStart
+  return {
+    path: file.path, side, startLine, endLine, body: '',
+    hunk: [`@@ -${oldStart},${hunk.oldLines} +${newStart},${hunk.newLines} @@`, ...hunk.lines].join('\n'),
+  }
+}
+
+/**
+ * Format a frozen reference for the ordinary, logged user message.
+ * @param selection - source, range, displayed patch, and user comment.
+ * @param index - one-based reference number in the composer.
+ * @returns Markdown content for an atomic composer quote.
+ */
+export function formatReviewComment(selection: ReviewSelection, index: number): string {
+  const { source, comment } = selection
+  const range = comment.startLine === comment.endLine ? String(comment.startLine) : `${comment.startLine}-${comment.endLine}`
+  // A longer fence keeps code containing Markdown fences inside the quoted hunk.
+  const fence = '`'.repeat(Math.max(3, ...Array.from(comment.hunk.matchAll(/`+/g), match => match[0].length + 1)))
+  const origin = source.kind === 'local' ? `Source: Local (${source.scope})` : `Source: ${source.url}\nCommit: ${source.headSha}`
+  return `## User Comment ${index}\nFile: ${comment.path}\nSide: ${comment.side}\nLines: ${range}\n${origin}\nDiff hunk:\n${fence}diff\n${comment.hunk}\n${fence}\nComment:\n${comment.body}`
+}
+
+/**
+ * Check whether the current diff still contains the captured range and hunk.
+ * @param selection - saved comment source and patch.
+ * @param source - currently displayed review source.
+ * @param file - current diff file.
+ * @returns whether an inline record can retain its original line placement.
+ */
+export function reviewMatches(selection: ReviewSelection, source: ReviewSource, file: ForgeDiffFile): boolean {
+  if (selection.source.kind === 'change' && (source.kind !== 'change' || source.headSha !== selection.source.headSha)) return false
+  const comment = selection.comment
+  return selectReviewLines(file, comment.side, comment.startLine, comment.endLine)?.hunk === comment.hunk
+}
diff --git a/packages/experimental/client-ui-forge/src/client/status.ts b/packages/experimental/client-ui-forge/src/client/status.ts
index dadfec8764..41d950b9af 100644
--- a/packages/experimental/client-ui-forge/src/client/status.ts
+++ b/packages/experimental/client-ui-forge/src/client/status.ts
@@ -27,16 +27,18 @@ export type CiSummary =
   | { readonly kind: 'passed' }
   /** `count` is the number of failed checks the host listed, which can be zero when the list is truncated. */
   | { readonly kind: 'failed'; readonly count: number }
+  | { readonly kind: 'cancelled'; readonly count: number }
 
-/** Checks grouped by outcome; `other` holds neutral, skipped, and cancelled checks. */
+/** Checks grouped by outcome; `other` holds neutral and skipped checks. */
 export interface CheckCounts {
   readonly failed: number
   readonly running: number
   readonly passed: number
+  readonly cancelled: number
   readonly other: number
 }
 
-const SETTLED: Record<Exclude<ChecksRollup, 'failure'>, Exclude<CiSummary['kind'], 'failed'>> = {
+const SETTLED: Record<Exclude<ChecksRollup, 'failure'>, Exclude<CiSummary['kind'], 'failed' | 'cancelled'>> = {
   none: 'none',
   pending: 'running',
   success: 'passed',
@@ -75,21 +77,29 @@ export function checkCounts(checks: readonly ChangeRequestCheck[]): CheckCounts
   let failed = 0
   let running = 0
   let passed = 0
+  let cancelled = 0
   for (const check of checks) {
     if (check.state === 'failure') failed++
     else if (check.state === 'pending') running++
     else if (check.state === 'success') passed++
+    else if (check.state === 'cancelled') cancelled++
   }
-  return { failed, running, passed, other: checks.length - failed - running - passed }
+  return { failed, running, passed, cancelled, other: checks.length - failed - running - passed - cancelled }
 }
 
 /**
  * Summarize the checks of a change request from the host's combined outcome.
  * @param snapshot - change request status.
- * @returns the combined outcome with the failed count.
+ * @returns the combined outcome with its failure or cancellation count.
  */
 export function ciSummary(snapshot: ChangeRequestSnapshot): CiSummary {
-  if (snapshot.checksRollup === 'failure') return { kind: 'failed', count: checkCounts(snapshot.checks).failed }
+  if (snapshot.checksRollup === 'failure') {
+    if (snapshot.checksTruncated) return { kind: 'failed', count: 0 }
+    const counts = checkCounts(snapshot.checks)
+    return counts.failed === 0 && counts.cancelled > 0
+      ? { kind: 'cancelled', count: counts.cancelled }
+      : { kind: 'failed', count: counts.failed }
+  }
   return { kind: SETTLED[snapshot.checksRollup] }
 }
 
diff --git a/packages/experimental/client-ui-forge/src/git.ts b/packages/experimental/client-ui-forge/src/git.ts
index 05370f1215..c8db71c7a9 100644
--- a/packages/experimental/client-ui-forge/src/git.ts
+++ b/packages/experimental/client-ui-forge/src/git.ts
@@ -1,8 +1,8 @@
-/** Read-only Git inspection of a Session's current directory in the Session's execution world. */
+/** Git queries in a Session's current directory, using its permissions and execution world. */
 
 import type { Context } from '@deepseek-ai/cordis'
 import type {} from '@deepseek-ai/dsh-fs'
-import type { SandboxPolicy } from '@deepseek-ai/dsh-sandbox'
+import type { SandboxExecutionPolicy } from '@deepseek-ai/dsh-sandbox'
 import type {} from '@deepseek-ai/dsh-sandbox-policy'
 import type { Session } from '@deepseek-ai/dsh-session'
 import type { SubprocessCollectedOutputs } from '@deepseek-ai/dsh-subprocess'
@@ -42,8 +42,13 @@ export interface GitOutput {
   readonly exitCode: number
 }
 
-/** Runs one Git subcommand in a fixed directory; output with an exit code outside `allowedExitCodes` throws. */
-export type Git = (name: string, args: readonly string[], allowedExitCodes?: readonly number[]) => Promise<GitOutput>
+/** Runs one Git subcommand with optional command-local configuration; output with an exit code outside `allowedExitCodes` throws. */
+export type Git = (
+  name: string,
+  args: readonly string[],
+  allowedExitCodes?: readonly number[],
+  configOverrides?: Readonly<Record<string, string>>,
+) => Promise<GitOutput>
 
 /** Thrown when a Git command prints more than `maxOutputBytes` on standard output. */
 export class GitOutputTooLarge extends Error {
@@ -75,9 +80,9 @@ const NOT_A_CHECKOUT = /not a git repository|must be run in a work tree/i
 
 /**
  * Inspect the checkout containing `directory`. Every command runs through the
- * mounted subprocess provider under a read-only confinement of the Session's
- * sandbox policy and reads refs and configuration only, never the working
- * tree. The top-level and shared Git directories Git prints are resolved
+ * mounted subprocess provider under the Session's sandbox policy and reads
+ * refs and configuration only, never the working tree.
+ * The top-level and shared Git directories Git prints are resolved
  * through `ctx.fs` into canonical process paths, the form the
  * working-directory service records.
  * @param ctx - context that provides `fs`, `subprocess`, `sandbox`, and `sandboxPolicy`.
@@ -125,7 +130,7 @@ export async function inspectCheckout(
 
 /**
  * List the local branches that can start a worktree of the checkout containing
- * `directory`, under the same confinement as {@link inspectCheckout}.
+ * `directory`, using the Session's permissions as in {@link inspectCheckout}.
  * @param ctx - context that provides `subprocess`, `sandbox`, and `sandboxPolicy`.
  * @param config - executable and process limits.
  * @param session - Session whose sandbox policy and execution world apply.
@@ -170,7 +175,7 @@ async function together<T extends readonly Promise<unknown>[]>(
 }
 
 /**
- * Report whether a local branch exists, under the same confinement as {@link inspectCheckout}.
+ * Report whether a local branch exists, using the Session's permissions as in {@link inspectCheckout}.
  * @param ctx - context that provides `subprocess`, `sandbox`, and `sandboxPolicy`.
  * @param config - executable and process limits.
  * @param session - Session whose sandbox policy and execution world apply.
@@ -194,8 +199,8 @@ export async function hasBranch(
 }
 
 /**
- * Bind the confined Git runner to one Session and directory: every command
- * runs under a read-only confinement of the Session's sandbox policy with the
+ * Bind the Git runner to one Session and directory: every command
+ * runs under the Session's sandbox policy with the
  * scrubbed environment, the fixed command prefix, and `config`'s limits.
  * @param ctx - context that provides `subprocess`, `sandbox`, and `sandboxPolicy`.
  * @param config - executable and process limits.
@@ -205,8 +210,9 @@ export async function hasBranch(
  * @returns the runner.
  */
 export function gitIn(ctx: Context, config: GitConfig, session: Session, directory: string, signal: AbortSignal): Git {
-  const policy: SandboxPolicy = { ...ctx.sandboxPolicy.resolve({ session, mode: 'read-only' }), mode: 'read-only' }
-  return (name, args, allowedExitCodes = [0]) => runGit(ctx, config, policy, directory, name, args, signal, allowedExitCodes)
+  const policy = ctx.sandboxPolicy.resolve({ session })
+  return (name, args, allowedExitCodes = [0], configOverrides = {}) =>
+    runGit(ctx, config, policy, directory, name, args, signal, allowedExitCodes, configOverrides)
 }
 
 /** Read the checked-out branch, including an unborn one; null when HEAD is detached. */
@@ -224,25 +230,37 @@ async function headCommit(git: Git): Promise<string | null> {
 async function runGit(
   ctx: Context,
   config: GitConfig,
-  policy: SandboxPolicy,
+  policy: SandboxExecutionPolicy,
   cwd: string,
   name: string,
   args: readonly string[],
   signal: AbortSignal,
   allowedExitCodes: readonly number[],
+  configOverrides: Readonly<Record<string, string>>,
 ): Promise<GitOutput> {
   using timeout = deadline(signal, config.gitTimeoutMs, 'FORGE_PANEL_GIT_TIMEOUT')
   const program = await ctx.subprocess.resolveExecutable(config.gitCommand, undefined, timeout.signal)
-  const confined = await ctx.sandbox.confine([program, ...GIT_PREFIX, ...args], policy, timeout.signal)
+  const command = [program, ...GIT_PREFIX, ...args]
+  const argv = policy.mode === 'danger-full-access'
+    ? command
+    : (await ctx.sandbox.confine(command, { ...policy, mode: policy.mode }, timeout.signal)).argv
   timeout.signal.throwIfAborted()
+  // Environment entries preserve filter subsection names containing '=' in configuration keys.
+  const overrides = Object.entries(configOverrides)
   /* jscpd:ignore-start -- the bounded spawn-and-collect sequence matches the
      worktree service's runner; the two differ in policy, environment, and
      error text, and a shared helper would make this panel depend on the
      worktree package or add a subprocess API for two experimental callers. */
   const child = ctx.subprocess.spawn({
-    argv: confined.argv,
+    argv,
     cwd,
-    env: GIT_ENV,
+    env: {
+      ...GIT_ENV,
+      GIT_CONFIG_COUNT: String(overrides.length),
+      ...Object.fromEntries(overrides.flatMap(([key, value], index) => [
+        [`GIT_CONFIG_KEY_${index}`, key], [`GIT_CONFIG_VALUE_${index}`, value],
+      ])),
+    },
     signal: timeout.signal,
     graceMs: config.graceMs,
     stdio: {
diff --git a/packages/experimental/client-ui-forge/src/index.ts b/packages/experimental/client-ui-forge/src/index.ts
index ddadf095eb..7fa9010b81 100644
--- a/packages/experimental/client-ui-forge/src/index.ts
+++ b/packages/experimental/client-ui-forge/src/index.ts
@@ -5,7 +5,7 @@ import z from '@deepseek-ai/schemastery'
 import type { Agent } from '@deepseek-ai/dsh-agent'
 import type {} from '@deepseek-ai/dsh-api-remote-access'
 import { changeRequestKey } from '@deepseek-ai/dsh-experimental-forge'
-import type { ForgeActionFailure, ForgeFailure, MergeMethod } from '@deepseek-ai/dsh-experimental-forge'
+import type { ChangeRequestSnapshot, ForgeActionFailure, ForgeFailure, ForgeReviewRequest, ForgeReviewResult, MergeMethod } from '@deepseek-ai/dsh-experimental-forge'
 import type { SessionChangeRequest } from '@deepseek-ai/dsh-experimental-forge-session'
 import type {} from '@deepseek-ai/dsh-experimental-worktree'
 import { appendPluginRecord } from '@deepseek-ai/dsh-session'
@@ -18,7 +18,7 @@ import { Remote, RemoteError, TypertRemoteService } from '@deepseek-ai/dsh-typer
 import { gitIn, inspectCheckout, listBranches } from './git.ts'
 import type { Inspection } from './git.ts'
 import { parseDiff } from './diff.ts'
-import { aheadOf, DiffTooLarge, forkPoint, localDiff, localText, NoForkPoint } from './local-diff.ts'
+import { aheadOf, DiffTooLarge, FilterConfigError, forkPoint, localDiff, localText, NoForkPoint } from './local-diff.ts'
 import { missingWorktree, SessionPanel } from './panel.ts'
 import { PatchCache } from './patch-cache.ts'
 import { ChangeRequestStates, changeRequestStatesDomain } from './states.ts'
@@ -44,7 +44,7 @@ type ControllerConfig = PanelConfig & { readonly maxBranches: number; readonly w
 
 /**
  * Serves the forge panel. Following a Session inspects the checkout of its
- * current directory read-only in the Session's execution world, recognizes the
+ * current directory using the Session's permissions and execution world, recognizes the
  * code host of the upstream remote or `origin`, probes sign-in for that host,
  * and polls the Session's bound change requests through `ctx.forge` until the
  * last follower of that Session leaves. A worktree request makes the panel
@@ -233,13 +233,14 @@ export class ForgePanelController extends TypertRemoteService {
 
   /**
    * Read the changes one scope covers in the checkout of the Session's
-   * current directory, with Git confined to the Session's read-only sandbox.
+   * current directory, with Git using the Session's sandbox policy.
    * @param session - Session whose checkout is read.
    * @param scope - which changes to read.
    * @param signal - request cancellation.
    * @returns the files, the base of the `branch` scope, and the untracked files left out.
    * @throws `forgePanel/not-a-checkout` outside a checkout; `forgePanel/no-fork-point` for the `branch`
-   * scope of a checkout without one; `forgePanel/diff-too-large` over `maxDiffBytes`; the Git error when Git fails.
+   * scope of a checkout without one; `forgePanel/filter-config-failed` when filter configuration cannot be read
+   * completely, before any comparison; `forgePanel/diff-too-large` over `maxDiffBytes`; the Git error when Git fails.
    */
   @Remote
   async localDiff(session: Session, scope: ForgeLocalScope, signal: AbortSignal): Promise<ForgeLocalDiff> {
@@ -270,6 +271,26 @@ export class ForgePanelController extends TypertRemoteService {
     return await diffing(localText(this.home, this.config, session, inspection.checkout.root, scope, path, signal))
   }
 
+  /**
+   * Load complete checks for the change request whose list the user opened.
+   * @param session - Session retaining the visible binding.
+   * @param url - binding URL.
+   * @param headSha - commit displayed by the card; a different head rejects the result.
+   * @param signal - cancellation when the list closes.
+   * @returns the complete snapshot at the displayed head.
+   * @throws `forgePanel/not-bound` for an invisible binding, `forgePanel/stale-head` for a moved head,
+   * or `forgePanel/checks-failed` when the provider cannot complete the read.
+   */
+  @Remote
+  async changeRequestChecks(session: Session, url: string, headSha: string, signal: AbortSignal): Promise<ChangeRequestSnapshot> {
+    signal.throwIfAborted()
+    const result = await this.home.forge.fetchChecks(this.bound(session, url).ref, signal)
+    this.bound(session, url)
+    if ('code' in result) throw new RemoteError('forgePanel/checks-failed', result.message, {})
+    if (result.headSha !== headSha) throw new RemoteError('forgePanel/stale-head', 'The change request head changed; refresh its status', {})
+    return result
+  }
+
   /**
    * Read the changes of a change request of a Session as its code host
    * computes them, at the head commit of its latest status. A patch already
@@ -335,6 +356,27 @@ export class ForgePanelController extends TypertRemoteService {
     return text
   }
 
+  /**
+   * Publish a line comment or completed review for a visible Session binding.
+   * @param session - Session retaining the change request.
+   * @param url - visible binding URL.
+   * @param request - reviewed head, ranges, plain text, and explicit review decision.
+   * @param signal - request cancellation.
+   * @returns confirmed publication or a typed failure; unknown outcomes require reconciliation on the host.
+   */
+  @Remote
+  async submitReview(session: Session, url: string, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult> {
+    signal.throwIfAborted()
+    const { ref } = this.bound(session, url)
+    if (!/^(?:[a-f0-9]{40}|[a-f0-9]{64})$/i.test(request.headSha)) throw new Error('Invalid review commit')
+    const comments = request.kind === 'comment' ? [request.comment] : request.comments
+    if (comments.some(comment => comment.path === '' || comment.body.trim() === ''
+      || !Number.isSafeInteger(comment.startLine) || comment.startLine < 1
+      || !Number.isSafeInteger(comment.endLine) || comment.endLine < comment.startLine)) throw new Error('Invalid review comment')
+    if (request.kind === 'review' && request.event !== 'approve' && request.body.trim() === '' && comments.length === 0) throw new Error('Empty review')
+    return await this.home.forge.submitReview(ref, request, signal)
+  }
+
   /**
    * Mark a draft change request of a Session ready for review; the change
    * request is polled again once the host answers.
@@ -617,7 +659,10 @@ export class ForgePanelController extends TypertRemoteService {
       }),
       refOf: url => ctx.forge.changeRequestFromUrl(url),
       watch: (ref, listener) => ctx.forge.watch(ref, listener),
-      open: async () => (await storage.open(changeRequestStatesDomain)).table('states'),
+      open: async () => {
+        const domain = await storage.open(changeRequestStatesDomain)
+        return { table: domain.table('states'), close: () => domain.close() }
+      },
       report: (error) => { ctx.logger.warn(`forge-panel: storing a change request state failed: ${String(error)}`) },
     })
     return this.states
@@ -656,6 +701,7 @@ async function diffing<T>(reading: Promise<T>): Promise<T> {
   try {
     return await reading
   } catch (error) {
+    if (error instanceof FilterConfigError) throw new RemoteError('forgePanel/filter-config-failed', error.message, {}, { cause: error })
     if (error instanceof DiffTooLarge) throw new RemoteError('forgePanel/diff-too-large', error.message, {}, { cause: error })
     if (error instanceof NoForkPoint) throw new RemoteError('forgePanel/no-fork-point', error.message, {}, { cause: error })
     throw error
diff --git a/packages/experimental/client-ui-forge/src/local-diff.ts b/packages/experimental/client-ui-forge/src/local-diff.ts
index 29eb206c41..cbe09afbd5 100644
--- a/packages/experimental/client-ui-forge/src/local-diff.ts
+++ b/packages/experimental/client-ui-forge/src/local-diff.ts
@@ -2,7 +2,7 @@
  * Local changes of a Session's checkout: where the `branch` scope forks, the
  * patch of one scope with its untracked files, the new-side text of one file,
  * and the size of the `branch` scope for the panel's card. Git runs through
- * the confined runner; untracked and working-tree files are read through
+ * the Session's Git runner; untracked and working-tree files are read through
  * `ctx.fs`, both within `maxDiffBytes`.
  */
 
@@ -37,13 +37,37 @@ export class DiffTooLarge extends Error {
   override name = 'DiffTooLarge'
 }
 
+/** Thrown when filter configuration cannot be read completely; no comparison has run. */
+export class FilterConfigError extends Error {
+  override name = 'FilterConfigError'
+}
+
 /** Thrown for the `branch` scope of a checkout without a fork point. */
 export class NoForkPoint extends Error {
   override name = 'NoForkPoint'
 }
 
-/** Literal paths, no external diff driver or text conversion, rename detection, and fixed `a/` and `b/` prefixes. */
-const DIFF = ['-c', 'core.quotePath=false', 'diff', '--no-ext-diff', '--no-textconv', '--no-color', '-M', '--src-prefix=a/', '--dst-prefix=b/'] as const
+/** No executable diff helpers or submodule working-tree inspection; preserve recorded submodule commit changes. */
+const DIFF = ['-c', 'core.quotePath=false', 'diff', '--no-ext-diff', '--no-textconv', '--submodule=short', '--ignore-submodules=dirty', '--no-color', '-M', '--src-prefix=a/', '--dst-prefix=b/'] as const
+
+/** Disable enumerated clean/process filters for one diff without modifying Git configuration. */
+async function diffFilterOverrides(git: Git): Promise<Readonly<Record<string, string>>> {
+  let configured: GitOutput
+  try {
+    configured = await git('filters', ['config', '--null', '--name-only', '--get-regexp', '^filter\\.'], [0, 1])
+  } catch (error) {
+    throw new FilterConfigError('Cannot read complete Git filter configuration; comparison was not run', { cause: error })
+  }
+  const overrides: Record<string, string> = {}
+  for (const key of configured.stdout.split('\0')) {
+    if (!key.endsWith('.clean') && !key.endsWith('.process')) continue
+    const driver = key.slice(0, key.lastIndexOf('.'))
+    overrides[`${driver}.clean`] = ''
+    overrides[`${driver}.process`] = ''
+    overrides[`${driver}.required`] = 'false'
+  }
+  return overrides
+}
 
 /** Characters Git inspects for a NUL character before it calls content binary. */
 const BINARY_PROBE = 8000
@@ -74,7 +98,8 @@ export async function forkPoint(git: Git, inspection: Inspection, created: Forge
 }
 
 /**
- * Read the changes one scope covers in the checkout at `root`.
+ * Read changes at `root` with command-local clean/process filter overrides and without
+ * submodule working-tree inspection. Git's built-in newline, ident, and encoding conversions still apply.
  * @param ctx - context that provides `fs`, `subprocess`, `sandbox`, and `sandboxPolicy`.
  * @param config - Git and size limits.
  * @param session - Session whose sandbox policy and execution world apply.
@@ -83,7 +108,8 @@ export async function forkPoint(git: Git, inspection: Inspection, created: Forge
  * @param scope - which changes to read.
  * @param signal - cancellation of every command and read.
  * @returns tracked files in Git's order, then untracked files unless the scope is `staged`.
- * @throws NoForkPoint for the `branch` scope without `fork`; DiffTooLarge over `maxDiffBytes`; an Error when Git fails.
+ * @throws NoForkPoint for the `branch` scope without `fork`; FilterConfigError when filter configuration
+ * cannot be read within `maxDiffBytes`; DiffTooLarge for oversized comparison output; an Error when Git fails.
  */
 export async function localDiff(
   ctx: Context,
@@ -107,7 +133,8 @@ export async function localDiff(
     /* v8 ignore next -- closed ForgeLocalScope union exhaustiveness guard */
     default: return assertNever(scope, 'ForgeLocalScope.kind')
   }
-  const tracked = parseDiff((await bounded(git('diff', [...DIFF, ...range, '--']))).stdout)
+  const overrides = await diffFilterOverrides(git)
+  const tracked = parseDiff((await bounded(git('diff', [...DIFF, ...range, '--'], undefined, overrides))).stdout)
   if (scope.kind === 'staged') return { base: null, files: tracked, omitted: 0 }
   const untracked = await untrackedFiles(ctx, config, git, root, signal)
   return { base: fork === null || scope.kind !== 'branch' ? null : fork.label, files: [...tracked, ...untracked.files], omitted: untracked.omitted }
@@ -157,7 +184,8 @@ export async function localText(
  * @param created - worktree the Session created, or null.
  * @param signal - cancellation of every command and read.
  * @returns the base and the changed files, or null without a fork point.
- * @throws DiffTooLarge when the untracked file list exceeds `maxDiffBytes`; an Error when Git fails.
+ * @throws FilterConfigError when filter configuration cannot be read within `maxOutputBytes`;
+ * DiffTooLarge when the untracked file list exceeds `maxDiffBytes`; an Error when Git fails.
  */
 export async function localChanges(
   ctx: Context,
@@ -171,7 +199,8 @@ export async function localChanges(
   const git = gitIn(ctx, config, session, root, signal)
   const fork = await forkPoint(git, inspection, created)
   if (fork === null) return null
-  const numstat = await git('numstat', ['-c', 'core.quotePath=false', 'diff', '--no-ext-diff', '--no-textconv', '--numstat', '-z', '-M', fork.commit, '--'])
+  const overrides = await diffFilterOverrides(git)
+  const numstat = await git('numstat', [...DIFF, '--numstat', '-z', fork.commit, '--'], undefined, overrides)
   const listing = gitIn(ctx, { ...config, maxOutputBytes: config.maxDiffBytes }, session, root, signal)
   const untracked = await untrackedFiles(ctx, config, listing, root, signal)
   return {
diff --git a/packages/experimental/client-ui-forge/src/states.ts b/packages/experimental/client-ui-forge/src/states.ts
index 69883befdf..4ea03c6349 100644
--- a/packages/experimental/client-ui-forge/src/states.ts
+++ b/packages/experimental/client-ui-forge/src/states.ts
@@ -56,6 +56,13 @@ export interface StoredStates {
   delete(key: string): Promise<boolean>
 }
 
+/** One run's storage handle; closing releases its domain for the next run. */
+export interface OpenedStates {
+  readonly table: StoredStates
+  /** Close the domain after the run's accepted writes settle. */
+  close(): Promise<void>
+}
+
 /** One listed Session and the URLs of its visible bindings, undefined when they are not known without loading it. */
 export interface ListedSession {
   readonly id: SessionId
@@ -72,8 +79,8 @@ export interface ChangeRequestStateSources {
   readonly refOf: (url: string) => ChangeRequestRef | undefined
   /** Poll a change request until the returned disposer runs. */
   readonly watch: (ref: ChangeRequestRef, listener: ChangeRequestListener) => () => void
-  /** Open the stored states. */
-  readonly open: () => Promise<StoredStates>
+  /** Open the stored states; the run owns and closes the returned handle. */
+  readonly open: () => Promise<OpenedStates>
   /** Report a failed durable write; the state stays in memory. */
   readonly report: (error: unknown) => void
 }
@@ -157,9 +164,9 @@ class Run {
   constructor(
     private readonly sources: ChangeRequestStateSources,
     private readonly readers: ReadonlySet<Reader>,
-    private readonly table: StoredStates,
+    private readonly storage: OpenedStates,
   ) {
-    for (const [, state] of table.entries()) this.states.set(state.url, state)
+    for (const [, state] of storage.table.entries()) this.states.set(state.url, state)
     // Subscribe before listing; updates received during the read supersede its snapshot.
     this.stopBindings = sources.onBindings((id, urls) => {
       if (this.starting) this.startupBindings.set(id, urls)
@@ -183,7 +190,7 @@ class Run {
     for (const [url] of this.states) {
       if (this.sessionsOf.has(url)) continue
       this.states.delete(url)
-      this.write(() => this.table.delete(storedKey(url)))
+      this.write(() => this.storage.table.delete(storedKey(url)))
     }
   }
 
@@ -202,7 +209,11 @@ class Run {
     this.stopBindings()
     for (const stop of this.polls.values()) stop()
     this.polls.clear()
-    await Promise.all(this.writes)
+    try {
+      await Promise.all(this.writes)
+    } finally {
+      await this.storage.close()
+    }
   }
 
   private bind(id: SessionId, urls: readonly string[]): void {
@@ -244,7 +255,7 @@ class Run {
   private settle(url: string, ids: ReadonlySet<SessionId>, state: ForgeChangeRequestListState): void {
     if (this.stopped || sameState(this.states.get(url), state)) return
     this.states.set(url, state)
-    this.write(() => this.table.put(storedKey(url), state))
+    this.write(() => this.storage.table.put(storedKey(url), state))
     for (const reader of this.readers) if ([...ids].some(reader.allowed)) reader.push(state)
   }
 
@@ -293,7 +304,7 @@ export class ChangeRequestStates {
   }
 
   /**
-   * End every stream, stop polling, and wait for initialization and accepted storage writes.
+   * End every stream, stop polling, and wait for initialization, accepted writes, and storage closure.
    * @returns settles after all owned work stops; subsequent streams end without starting work.
    */
   async dispose(): Promise<void> {
@@ -309,14 +320,16 @@ export class ChangeRequestStates {
     const started = (async () => {
       await preceding
       aborter.signal.throwIfAborted()
-      const table = await this.sources.open()
-      aborter.signal.throwIfAborted()
-      const run = new Run(this.sources, this.readers, table)
+      const storage = await this.sources.open()
+      let run: Run | undefined
       try {
+        aborter.signal.throwIfAborted()
+        run = new Run(this.sources, this.readers, storage)
         await run.start(aborter.signal)
         return run
       } catch (error) {
-        await run.stop()
+        if (run === undefined) await storage.close()
+        else await run.stop()
         throw error
       }
     })()
diff --git a/packages/experimental/client-ui-forge/src/types.ts b/packages/experimental/client-ui-forge/src/types.ts
index 6bed74c169..c96b0a7bb6 100644
--- a/packages/experimental/client-ui-forge/src/types.ts
+++ b/packages/experimental/client-ui-forge/src/types.ts
@@ -369,11 +369,15 @@ declare module '@deepseek-ai/dsh-typert-protocol' {
     'forgePanel/not-a-checkout': Record<string, never>
     /** No remote names a default branch that HEAD shares history with, and the checkout is not a worktree the Session created. */
     'forgePanel/no-fork-point': Record<string, never>
+    /** Filter configuration could not be read completely; no comparison ran. Correct Git settings or the output limit before retrying. */
+    'forgePanel/filter-config-failed': Record<string, never>
     /**
      * The patch, the untracked file list, or the file exceeds `maxDiffBytes`, or the code host
      * or its provider refuses a change request's diff or file over a size limit.
      */
     'forgePanel/diff-too-large': Record<string, never>
+    /** Complete checks could not be loaded; the polling preview remains available. */
+    'forgePanel/checks-failed': Record<string, never>
     /** The code host did not provide the change request's diff or file, or its status has not been read yet; the message says why. */
     'forgePanel/diff-failed': Record<string, never>
   }
diff --git a/packages/experimental/client-ui-forge/tests/change-request-card.client.spec.tsx b/packages/experimental/client-ui-forge/tests/change-request-card.client.spec.tsx
index a524b38b2e..3b7b7d0c97 100644
--- a/packages/experimental/client-ui-forge/tests/change-request-card.client.spec.tsx
+++ b/packages/experimental/client-ui-forge/tests/change-request-card.client.spec.tsx
@@ -131,6 +131,7 @@ describe('collapsed ChangeRequestCard', () => {
       checksRollup: 'failure',
       checks: [check('lint', { state: 'failure' }), check('test'), check('types', { state: 'failure' })],
     }, '2 checks failed', 'failure', 'error'],
+    ['cancelled checks', { checksRollup: 'failure', checks: [check('build', { state: 'cancelled' })] }, '1 checks cancelled', 'cancelled', null],
     ['failed checks the host did not list', { checksRollup: 'failure', checksTruncated: true }, en['change.ci.failedUnlisted'], 'failure', 'error'],
   ] as const)('states %s', (_label, overrides, text, glyph, tone) => {
     const ci = within(metaOf(card(entry(1, snapshot(1, overrides))))).getByText(text)
@@ -277,7 +278,10 @@ describe('expanded ChangeRequestCard', () => {
     expect(within(b.item).getByText('+12')).toBeTruthy()
   })
 
-  it('lists the checks failed first, then running, then the rest, with their times and links', () => {
+  it.each([
+    ['a partial preview', true, '8 checks loaded; more available', null],
+    ['a complete list', false, '1 failed · 2 running · 2 passed · 1 cancelled · 2 other', 'error'],
+  ] as const)('lists %s with failures first, then running checks, and their times and links', (_label, checksTruncated, text, tone) => {
     const checks = [
       check('build'),
       check('docs', { state: 'neutral' }),
@@ -288,12 +292,12 @@ describe('expanded ChangeRequestCard', () => {
       check('package', { completedAt: null }),
       check('perf', { state: 'cancelled', startedAt: '2026-10-09T10:00:00Z', completedAt: '2026-10-09T11:30:20Z' }),
     ]
-    const b = card(entry(1, snapshot(1, { checks, checksRollup: 'failure', checksTruncated: true })), { expanded: true })
+    const b = card(entry(1, snapshot(1, { checks, checksRollup: 'failure', checksTruncated })), { expanded: true })
     const toggle = within(b.item).getByText(en['change.row.checks']).closest('button')
     if (toggle === null) throw new Error('the checks row does not open a list')
     const summary = rowValue(b.item, en['change.row.checks'])
-    expect(summary.textContent).toBe('1 failed · 2 running · 2 passed · 3 other')
-    expect(summary.getAttribute('data-tone')).toBe('error')
+    expect(summary.textContent).toBe(text)
+    expect(summary.getAttribute('data-tone')).toBe(tone)
     // The row leads with the combined outcome.
     expect(toggle.querySelector('[data-forge-check]')?.getAttribute('data-forge-check')).toBe('failure')
     expect(toggle.getAttribute('aria-expanded')).toBe('false')
@@ -311,7 +315,7 @@ describe('expanded ChangeRequestCard', () => {
       'skipped|e2e||no link',
       'cancelled|perf|1h 30m|no link',
     ])
-    expect(screen.getByText('Only the first 8 are listed')).toBeTruthy()
+    expect(screen.queryAllByText('8 checks loaded; more available')).toHaveLength(checksTruncated ? 2 : 0)
 
     fireEvent.click(screen.getAllByRole('menuitem')[0]!)
     expect(b.openLink).toHaveBeenCalledWith('https://ci.example.test/lint')
@@ -319,6 +323,76 @@ describe('expanded ChangeRequestCard', () => {
     expect(checkRows()).toEqual([])
   })
 
+  it.each([
+    [new Error('timeout'), 'timeout'],
+    ['offline', 'offline'],
+  ])('retains the preview after rejection %s and retries loading complete checks', async (failure, message) => {
+    const partial = snapshot(1, { checks: [check('old lint', { state: 'failure' })], checksTruncated: true })
+    const waiting = Promise.withResolvers<ReturnType<typeof snapshot>>()
+    const readChecks = vi.fn<NonNullable<ChangeRequestActions['readChecks']>>()
+      .mockReturnValueOnce(waiting.promise)
+      .mockResolvedValueOnce(snapshot(1, { checks: [check('current lint')] }))
+    const b = card(entry(1, partial), { expanded: true, actions: { readChecks } })
+    expect(readChecks).not.toHaveBeenCalled()
+    fireEvent.click(within(b.item).getByText(en['change.row.checks']))
+    expect(readChecks).toHaveBeenCalledWith(partial.url, partial.headSha, expect.any(AbortSignal))
+    expect(screen.getByText('old lint')).toBeTruthy()
+    const loading = screen.getByRole('menuitem', { name: en['change.checks.loading'] })
+    expect(loading).toHaveProperty('disabled', true)
+    fireEvent.click(loading)
+    expect(readChecks).toHaveBeenCalledTimes(1)
+    await act(async () => { waiting.reject(failure); await Promise.resolve() })
+    expect(screen.getByText('old lint')).toBeTruthy()
+    expect(screen.getByText(`Could not load more checks: ${message}`)).toBeTruthy()
+    await act(async () => { fireEvent.click(screen.getByRole('menuitem', { name: en['change.checks.retry'] })) })
+    expect(screen.queryByText('old lint')).toBeNull()
+    expect(screen.getByText('current lint')).toBeTruthy()
+    expect(rowValue(b.item, en['change.row.checks']).textContent).toBe('1 passed')
+  })
+
+  it('keeps a reopened list loading when its cancelled read rejects late', async () => {
+    const partial = snapshot(1, { checks: [check('preview')], checksTruncated: true })
+    const older = Promise.withResolvers<ReturnType<typeof snapshot>>()
+    const newer = Promise.withResolvers<ReturnType<typeof snapshot>>()
+    const readChecks = vi.fn<NonNullable<ChangeRequestActions['readChecks']>>()
+      .mockReturnValueOnce(older.promise)
+      .mockReturnValueOnce(newer.promise)
+    const b = card(entry(1, partial), { expanded: true, actions: { readChecks } })
+    const toggle = within(b.item).getByText(en['change.row.checks'])
+    fireEvent.click(toggle)
+    fireEvent.click(toggle)
+    fireEvent.click(toggle)
+    expect(readChecks).toHaveBeenCalledTimes(2)
+    expect(readChecks.mock.calls[0]![2].aborted).toBe(true)
+    expect(readChecks.mock.calls[1]![2].aborted).toBe(false)
+
+    await act(async () => { older.reject(new Error('cancelled request')); await Promise.resolve() })
+    expect(screen.getByText(en['change.checks.loading'])).toBeTruthy()
+    expect(screen.getByText('preview')).toBeTruthy()
+    expect(screen.queryByText('Could not load more checks: cancelled request')).toBeNull()
+    expect(screen.queryByRole('menuitem', { name: en['change.checks.retry'] })).toBeNull()
+
+    await act(async () => { newer.resolve(snapshot(1, { checks: [check('current result')] })); await Promise.resolve() })
+    expect(screen.getByText('current result')).toBeTruthy()
+    expect(screen.queryByText('preview')).toBeNull()
+  })
+
+  it.each(['close', 'unmount', 'head'] as const)('cancels a check read on %s and ignores its late completion', async (change) => {
+    const partial = snapshot(1, { checks: [check('preview')], checksTruncated: true })
+    const pending = Promise.withResolvers<ReturnType<typeof snapshot>>()
+    const readChecks = vi.fn<NonNullable<ChangeRequestActions['readChecks']>>(() => pending.promise)
+    const b = card(entry(1, partial), { expanded: true, actions: { readChecks } })
+    fireEvent.click(within(b.item).getByText(en['change.row.checks']))
+    const signal = readChecks.mock.calls[0]![2]
+    if (change === 'close') fireEvent.click(within(b.item).getByText(en['change.row.checks']))
+    else if (change === 'unmount') b.view.unmount()
+    else b.view.rerender(<ul><ChangeRequestCard entry={entry(1, { ...partial, headSha: 'b'.repeat(40) })} expanded onToggle={b.onToggle}
+      now={NOW} locale="en" actions={{ openLink: b.openLink, copyLink: b.copyLink, retry: b.retry, readChecks }} t={t} /></ul>)
+    expect(signal.aborted).toBe(true)
+    await act(async () => { pending.resolve(snapshot(1, { checks: [check('late result')] })); await Promise.resolve() })
+    expect(screen.queryByText('late result')).toBeNull()
+  })
+
   it('closes the checks list from its row and from an outside press', () => {
     const b = card(entry(1, snapshot(1, { checks: [check('build')] })), { expanded: true })
     const toggle = within(b.item).getByText(en['change.row.checks']).closest('button')
diff --git a/packages/experimental/client-ui-forge/tests/changes-address.client.spec.ts b/packages/experimental/client-ui-forge/tests/changes-address.client.spec.ts
index 09a977b77a..15f96abb04 100644
--- a/packages/experimental/client-ui-forge/tests/changes-address.client.spec.ts
+++ b/packages/experimental/client-ui-forge/tests/changes-address.client.spec.ts
@@ -37,7 +37,7 @@ describe('changes addresses', () => {
 
   it('name the local view and a change request view by its number when the URL ends in one', () => {
     const t = makeTranslate(zh)
-    expect(changesTitle({ kind: 'local' }, t)).toBe('变更')
+    expect(changesTitle({ kind: 'local' }, t)).toBe('本地变更')
     expect(changesTitle({ kind: 'change', url: URL }, t)).toBe('#7 的变更')
     expect(changesTitle({ kind: 'change', url: 'https://example.com/review' }, t)).toBe('变更')
   })
diff --git a/packages/experimental/client-ui-forge/tests/changes-tab.client.spec.tsx b/packages/experimental/client-ui-forge/tests/changes-tab.client.spec.tsx
index 5b8639d051..85205eada1 100644
--- a/packages/experimental/client-ui-forge/tests/changes-tab.client.spec.tsx
+++ b/packages/experimental/client-ui-forge/tests/changes-tab.client.spec.tsx
@@ -10,9 +10,12 @@ import { SessionId } from '@deepseek-ai/dsh-session/types'
 import { RemoteError, type RemoteResult } from '@deepseek-ai/dsh-typert-protocol'
 import { fileAddressFor } from '@deepseek-ai/dsh-util-workspace-path'
 import { CHANGES_KIND, changesAddress, type ChangesParams, type ChangesSource } from '../src/client/changes-address.ts'
+import * as DiffFileModule from '../src/client/DiffFile.tsx'
+import type { ReviewActions } from '../src/client/ReviewComposer.tsx'
+import { ReviewQueue } from '../src/client/review-queue.ts'
 import { createChangesStore } from '../src/client/changes-store.ts'
 import { ChangesTab, type ChangesTabInjected, type ChangesTabProps } from '../src/client/ChangesTab.tsx'
-import { en } from '../src/client/locales.ts'
+import { en, zh } from '../src/client/locales.ts'
 import type { PanelSnapshot } from '../src/client/source.ts'
 import css from '../src/client/ChangesTab.module.css'
 import type { ForgeChangeRequestDiff, ForgeDiffFile, ForgeLocalDiff, ForgePanelState } from '../src/types.ts'
@@ -33,7 +36,9 @@ beforeEach(() => {
 
 afterEach(() => {
   cleanup()
+  vi.restoreAllMocks()
   scrolled.mockReset()
+  localStorage.clear()
   Reflect.deleteProperty(Element.prototype, 'scrollIntoView')
 })
 
@@ -105,6 +110,7 @@ const REFUSED = {
   noForkPoint: { ok: false, error: new RemoteError('forgePanel/no-fork-point', 'no fork point', {}) },
   notCheckout: { ok: false, error: new RemoteError('forgePanel/not-a-checkout', 'not a checkout', {}) },
   tooLarge: { ok: false, error: new RemoteError('forgePanel/diff-too-large', 'too large', {}) },
+  filterConfig: { ok: false, error: new RemoteError('forgePanel/filter-config-failed', 'filter configuration unavailable', {}) },
   gone: { ok: false, error: new RemoteError('forgePanel/diff-failed', 'gone', {}) },
   hostRefused: { ok: false, error: new RemoteError('forgePanel/diff-failed', 'diff too large', {}) },
   failed: { ok: false, error: new RemoteError('gateway/bad-request', 'failed', {}) },
@@ -141,6 +147,7 @@ async function settle(): Promise<void> {
 type Faces = { -readonly [K in Exclude<keyof ChangesTabInjected, 'keyedHooks'>]: ReturnType<typeof vi.fn<ChangesTabInjected[K]>> }
 
 interface MountOptions {
+  readonly translate?: typeof t
   readonly source?: ChangesSource
   readonly state?: ForgePanelState | null
   readonly disconnected?: boolean
@@ -200,6 +207,9 @@ function mount(options: MountOptions = {}) {
     changeRequestText: vi.fn<ChangesTabInjected['changeRequestText']>(async () => ok(APP_TEXT)),
     openLink: vi.fn<ChangesTabInjected['openLink']>(),
     copyPath: vi.fn<ChangesTabInjected['copyPath']>(),
+    reviewQueue: vi.fn<ChangesTabInjected['reviewQueue']>().mockReturnValue(new ReviewQueue('test-review')),
+    submitReview: vi.fn<ChangesTabInjected['submitReview']>().mockResolvedValue({ ok: true, value: { ok: true, url: URL7 } }),
+    addReviewToInput: vi.fn<ChangesTabInjected['addReviewToInput']>().mockReturnValue(true),
     createChangeRequest: vi.fn<ChangesTabInjected['createChangeRequest']>(),
     report: vi.fn<ChangesTabInjected['report']>(),
   }
@@ -218,7 +228,7 @@ function mount(options: MountOptions = {}) {
     actions: store.actions,
     usePanel,
     ...faces,
-    t,
+    t: options.translate ?? t,
   }
   const view = render(<ChangesTab {...props} />)
   /** The section of one file. */
@@ -236,6 +246,116 @@ function rowTexts(section: HTMLElement): string[] {
   return [...section.querySelectorAll(`.${css.text}`)].map(element => element.textContent ?? '')
 }
 
+/** Section geometry with a short final page whose scroll position is clamped by the viewport. */
+function fileViewport(m: ReturnType<typeof mount>) {
+  const nodes = [...m.view.container.querySelectorAll<HTMLElement>('[data-forge-diff-file]')]
+  const viewport = m.view.getByRole('region', { name: `All ${nodes.length} files` })
+  vi.spyOn(viewport, 'getBoundingClientRect').mockReturnValue(new DOMRect(0, 0, 600, 300))
+  nodes.forEach((node, index) => {
+    vi.spyOn(node, 'getBoundingClientRect').mockImplementation(() => new DOMRect(0, index * 200 - viewport.scrollTop, 600, 200))
+  })
+  scrolled.mockImplementation(function (this: HTMLElement) {
+    viewport.scrollTop = Math.min(nodes.indexOf(this) * 200, nodes.length * 200 - 300)
+  })
+  return { viewport, nodes }
+}
+
+describe('ChangesTab keyboard file navigation', () => {
+  it.each([{ kind: 'local' }, { kind: 'change', url: URL7 }] as const)('moves between $kind files, expands the destination and keeps focus in the diff', async (source) => {
+    const m = mount({ source })
+    await settle()
+    const { viewport, nodes } = fileViewport(m)
+    const destination = nodes[2]!
+    fireEvent.click(within(destination).getByRole('button', { name: /^Collapse / }))
+    viewport.scrollTop = 250
+    fireEvent.scroll(viewport)
+    expect(fireEvent.keyDown(viewport, { key: 'ArrowRight' })).toBe(false)
+    expect(scrolled.mock.contexts.at(-1)).toBe(destination)
+    expect(destination.hasAttribute('data-expanded')).toBe(true)
+    expect(document.activeElement).toBe(viewport)
+    const tree = within(m.view.getByRole('navigation'))
+    expect(tree.getByRole('button', { name: destination.dataset.forgeDiffFile! }).getAttribute('aria-current')).toBe('true')
+    fireEvent.scroll(viewport)
+    fireEvent.keyDown(viewport, { key: 'ArrowLeft' })
+    expect(scrolled.mock.contexts.at(-1)).toBe(nodes[1])
+    expect(m.faces.localDiff.mock.calls.length + m.faces.changeRequestDiff.mock.calls.length).toBe(1)
+  })
+
+  it('stops at the ends, remembers a clamped last file, and follows manual scrolling', async () => {
+    const m = mount()
+    await settle()
+    const { viewport, nodes } = fileViewport(m)
+    fireEvent.keyDown(viewport, { key: 'ArrowLeft' })
+    expect(scrolled).not.toHaveBeenCalled()
+    for (let index = 1; index < nodes.length; index += 1) {
+      fireEvent.keyDown(viewport, { key: 'ArrowRight' })
+      fireEvent.scroll(viewport)
+      expect(scrolled.mock.contexts.at(-1)).toBe(nodes[index])
+    }
+    const count = scrolled.mock.calls.length
+    fireEvent.keyDown(viewport, { key: 'ArrowRight' })
+    expect(scrolled).toHaveBeenCalledTimes(count)
+    fireEvent.keyDown(viewport, { key: 'ArrowLeft' })
+    expect(scrolled.mock.contexts.at(-1)).toBe(nodes.at(-2))
+    viewport.scrollTop = 225
+    fireEvent.scroll(viewport)
+    fireEvent.keyDown(viewport, { key: 'ArrowRight' })
+    expect(scrolled.mock.contexts.at(-1)).toBe(nodes[2])
+  })
+
+  it('leaves vertical arrows, modifiers, composition and handled keys to their owners', async () => {
+    const m = mount()
+    await settle()
+    const { viewport } = fileViewport(m)
+    for (const input of [
+      { key: 'ArrowDown' }, { key: 'ArrowUp' }, { key: 'ArrowRight', shiftKey: true },
+      { key: 'ArrowRight', ctrlKey: true }, { key: 'ArrowRight', metaKey: true },
+      { key: 'ArrowRight', altKey: true }, { key: 'ArrowRight', isComposing: true },
+    ]) expect(fireEvent.keyDown(viewport, input)).toBe(true)
+    const handled = new KeyboardEvent('keydown', { key: 'ArrowRight', bubbles: true, cancelable: true })
+    handled.preventDefault()
+    fireEvent(viewport, handled)
+    act(() => { m.visibility.set(false) })
+    fireEvent.keyDown(viewport, { key: 'ArrowRight' })
+    expect(scrolled).not.toHaveBeenCalled()
+  })
+
+  it('preserves comment editing, native selections, tree controls and portalled menus', async () => {
+    const m = mount()
+    await settle()
+    const { viewport } = fileViewport(m)
+    const section = within(m.section('src/app.ts'))
+    fireEvent.click(section.getByRole('button', { name: 'Select line R4' }))
+    fireEvent.click(section.getByRole('button', { name: 'Add comment' }))
+    const input = section.getByRole('textbox')
+    fireEvent.change(input, { target: { value: 'Keep editing' } })
+    fireEvent.keyDown(input, { key: 'ArrowRight' })
+    fireEvent.keyDown(section.getByRole('button', { name: 'Add to input' }), { key: 'ArrowLeft' })
+    expect(input).toHaveProperty('value', 'Keep editing')
+    expect(scrolled).not.toHaveBeenCalled()
+    fireEvent.keyDown(m.view.getByRole('separator'), { key: 'ArrowRight' })
+    fireEvent.keyDown(within(m.view.getByRole('navigation')).getByRole('textbox'), { key: 'ArrowLeft' })
+    fireEvent.click(section.getByRole('button', { name: 'More actions for app.ts' }))
+    const menuItem = m.view.getByRole('menuitem', { name: 'Copy path' })
+    fireEvent.keyDown(menuItem, { key: 'ArrowRight' })
+    fireEvent.keyDown(menuItem, { key: 'Escape' })
+    fireEvent.keyDown(m.section('src/app.ts').querySelector('svg')!, { key: 'ArrowRight' })
+    expect(scrolled).not.toHaveBeenCalled()
+    const selection = window.getSelection()!
+    const range = document.createRange()
+    range.selectNodeContents(m.section('src/new.ts').querySelector('[data-review-code][data-new-line="1"]')!)
+    selection.removeAllRanges()
+    selection.addRange(range)
+    try {
+      expect(selection.toString()).toBe('export const added = 1')
+      fireEvent.keyDown(viewport, { key: 'ArrowRight' })
+      expect(scrolled).not.toHaveBeenCalled()
+    } finally {
+      selection.removeAllRanges()
+    }
+  })
+})
+
 describe('ChangesTab local reads', () => {
   it('waits for the panel state, then reads the branch scope and draws its files', async () => {
     const m = mount({ state: null })
@@ -319,6 +439,20 @@ describe('ChangesTab local reads', () => {
     expect(m.view.getByRole('button', { name: 'All 0 files' }).hasAttribute('disabled')).toBe(true)
   })
 
+  it.each([['en', en], ['zh', zh]] as const)('explains a filter configuration failure in %s and retries the comparison', async (_locale, dictionary) => {
+    const m = mount({
+      translate: makeTranslate(dictionary),
+      setup: (faces) => { faces.localDiff.mockResolvedValueOnce(REFUSED.filterConfig) },
+    })
+    await settle()
+    expect(m.view.getByRole('status').textContent).toBe(`${dictionary['diff.filterConfigFailed']}${dictionary.retry}`)
+    expect(m.view.queryByText(dictionary['diff.tooLarge'])).toBeNull()
+    fireEvent.click(m.view.getByRole('button', { name: dictionary.retry }))
+    await settle()
+    expect(m.paths()).toHaveLength(6)
+    expect(m.view.queryByText(dictionary['diff.filterConfigFailed'])).toBeNull()
+  })
+
   it('offers a retry after any other failure', async () => {
     const m = mount({ setup: (faces) => { faces.localDiff.mockResolvedValueOnce(REFUSED.failed) } })
     await settle()
@@ -562,14 +696,12 @@ describe('ChangesTab layout', () => {
     await settle()
     fireEvent.click(within(m.section('docs/gone.txt')).getByRole('button', { name: 'Collapse gone.txt' }))
     fireEvent.click(m.view.getByRole('button', { name: 'All 6 files' }))
-    // Each row shows the name before its directory; assistive technology reads the complete path.
-    expect(m.view.getAllByRole('menuitem')).toEqual([
-      'src/app.ts+2−2', 'src/new.ts+2−0', `assets/logo.png${en['diff.binaryLabel']}`, 'docs/gone.txt+0−1', 'lib/b.txt+0−0', 'logs/big.log+0−0',
-    ].map(name => m.view.getByRole('menuitem', { name })))
-    expect(m.view.getAllByRole('menuitem')[0]?.querySelector('[aria-hidden="true"]')?.textContent).toBe('app.tssrc')
+    expect(m.view.getAllByRole('menuitem').map(item => item.getAttribute('aria-label'))).toEqual([
+      'assets', 'assets/logo.png', 'docs', 'docs/gone.txt', 'lib', 'lib/a.txt → lib/b.txt', 'logs', 'logs/big.log', 'src', 'src/app.ts', 'src/new.ts',
+    ])
     fireEvent.keyDown(document.activeElement ?? document.body, { key: 'Escape' })
     fireEvent.click(m.view.getByRole('button', { name: 'All 6 files' }))
-    fireEvent.click(m.view.getByRole('menuitem', { name: 'docs/gone.txt+0−1' }))
+    fireEvent.click(m.view.getByRole('menuitem', { name: 'docs/gone.txt' }))
     expect(m.view.queryAllByRole('menuitem')).toEqual([])
     expect(m.section('docs/gone.txt').hasAttribute('data-expanded')).toBe(true)
     expect(scrolled).toHaveBeenCalledOnce()
@@ -671,16 +803,16 @@ describe('ChangesTab actions', () => {
     return m.view.getAllByRole('menuitem').map(item => item.textContent ?? '')
   }
 
-  it.each(['local', 'change'] as const)('copies the full relative path from a %s diff header without folding the file', async (kind) => {
+  it.each(['local', 'change'] as const)('keeps the clipboard unchanged when a %s diff file label is clicked', async (kind) => {
     const m = mount({ source: kind === 'local' ? { kind } : { kind, url: URL7 } })
     await settle()
-    fireEvent.click(within(m.section('src/app.ts')).getByRole('button', { name: `${en['diff.copyPath']}: src/app.ts` }))
-    expect(m.faces.copyPath).toHaveBeenCalledWith('src/app.ts')
+    fireEvent.click(m.section('src/app.ts').querySelector('[data-forge-file-label]')!)
+    expect(m.faces.copyPath).not.toHaveBeenCalled()
     expect(m.section('src/app.ts').hasAttribute('data-expanded')).toBe(true)
     expect(m.tabActions.openResource).not.toHaveBeenCalled()
     fireEvent.click(within(m.section('docs/gone.txt')).getByRole('button', { name: 'Collapse gone.txt' }))
-    fireEvent.click(within(m.section('docs/gone.txt')).getByRole('button', { name: `${en['diff.copyPath']}: docs/gone.txt` }))
-    expect(m.faces.copyPath).toHaveBeenLastCalledWith('docs/gone.txt')
+    fireEvent.click(m.section('docs/gone.txt').querySelector('[data-forge-file-label]')!)
+    expect(m.faces.copyPath).not.toHaveBeenCalled()
     expect(m.section('docs/gone.txt').hasAttribute('data-expanded')).toBe(false)
   })
 
@@ -689,9 +821,11 @@ describe('ChangesTab actions', () => {
       ...LOCAL, files: [file('src/index.ts'), file('tests/index.ts')],
     })) } })
     await settle()
-    fireEvent.click(m.view.getByRole('button', { name: 'Copy path: src/index.ts' }))
+    menu(m, 'src/index.ts')
+    fireEvent.click(m.view.getByRole('menuitem', { name: en['diff.copyPath'] }))
     expect(m.faces.copyPath).toHaveBeenLastCalledWith('src/index.ts')
-    fireEvent.click(m.view.getByRole('button', { name: 'Copy path: tests/index.ts' }))
+    menu(m, 'tests/index.ts')
+    fireEvent.click(m.view.getByRole('menuitem', { name: en['diff.copyPath'] }))
     expect(m.faces.copyPath).toHaveBeenLastCalledWith('tests/index.ts')
   })
 
@@ -854,3 +988,201 @@ describe('ChangesTab change requests', () => {
     expect(other.faces.changeRequestDiff).not.toHaveBeenCalled()
   })
 })
+
+describe('line review actions', () => {
+  async function comment(options: MountOptions = {}) {
+    const m = mount({ source: { kind: 'change', url: URL7 }, ...options })
+    await settle()
+    const section = within(m.section('src/app.ts'))
+    fireEvent.click(section.getByRole('button', { name: 'Select line R4' }))
+    fireEvent.click(section.getByRole('button', { name: 'Add comment' }))
+    fireEvent.change(section.getByRole('textbox'), { target: { value: 'Check the guard' } })
+    const publish = () => {
+      fireEvent.click(section.getByRole('button', { name: 'GitHub comment options' }))
+      fireEvent.click(m.view.getByRole('menuitem', { name: 'Publish single comment' }))
+    }
+    return { ...m, sectionQueries: section, publish }
+  }
+  it.each(['stale', 'unsupported', 'failed'] as const)('retains the draft after a known %s refusal and permits a later deliberate publish', async (code) => {
+    const m = await comment({ setup: (faces) => { faces.submitReview.mockResolvedValueOnce(ok({ ok: false, code, message: 'Denied' })) } })
+    m.publish()
+    await settle()
+    expect(m.faces.reviewQueue({ id: TAB, signal: m.aborter.signal }).getSnapshot().uncertain).toBeNull()
+    expect(m.sectionQueries.getByRole('alert').textContent).toBe(code === 'failed' ? t('review.failed', { message: 'Denied' }) : t(code === 'stale' ? 'review.stale' : 'review.unsupported'))
+    expect(m.sectionQueries.getByRole('textbox')).toHaveProperty('value', 'Check the guard')
+    m.publish()
+    await settle()
+    expect(m.sectionQueries.queryByRole('textbox')).toBeNull()
+    expect(m.faces.report).toHaveBeenCalledWith('review.published')
+    expect(m.section('src/app.ts').querySelector('[data-forge-review-thread="published"]')).not.toBeNull()
+  })
+  it.each(['rejected', 'remote-error', 'receipt-storage'] as const)('holds an uncertain %s result for explicit reconciliation', async (kind) => {
+    const m = await comment({ setup: (faces) => {
+      if (kind === 'rejected') faces.submitReview.mockRejectedValueOnce(new Error('disconnected'))
+      else if (kind === 'remote-error') faces.submitReview.mockResolvedValueOnce(REFUSED.failed)
+    } })
+    const records = m.faces.reviewQueue({ id: TAB, signal: m.aborter.signal })
+    if (kind === 'receipt-storage') vi.spyOn(records, 'published').mockReturnValue(false)
+    m.publish()
+    await settle()
+    expect(records.getSnapshot().uncertain).not.toBeNull()
+    fireEvent.click(m.view.getByRole('button', { name: en['review.recheck'] }))
+    expect(m.faces.openLink).toHaveBeenCalledWith(URL7)
+    fireEvent.click(m.view.getByRole('button', { name: 'Submit review' }))
+    const dialog = within(m.view.getByRole('dialog'))
+    expect(dialog.getByRole('button', { name: 'Submit review' })).toHaveProperty('disabled', true)
+    fireEvent.click(dialog.getByRole('button', { name: en['review.recheck'] }))
+    fireEvent.click(dialog.getByRole('button', { name: 'Checked; allow resubmission' }))
+    expect(records.getSnapshot().uncertain).toBeNull()
+    fireEvent.click(dialog.getByRole('button', { name: 'Cancel' }))
+    expect(m.view.queryByRole('dialog')).toBeNull()
+  })
+  it('does not dispatch when persisting the outgoing request fails', async () => {
+    const m = await comment()
+    vi.spyOn(Storage.prototype, 'setItem').mockImplementation(() => { throw new Error('quota') })
+    m.publish()
+    await settle()
+    expect(m.faces.submitReview).not.toHaveBeenCalled()
+    expect(m.sectionQueries.getByRole('alert').textContent).toBe(en['review.saveFailed'])
+  })
+  it('reports quote-record failure without losing the accepted input reference', async () => {
+    const m = await comment({ source: { kind: 'local' } })
+    vi.spyOn(Storage.prototype, 'setItem').mockImplementation(() => { throw new Error('quota') })
+    fireEvent.click(m.sectionQueries.getByRole('button', { name: 'Add to input' }))
+    expect(m.faces.addReviewToInput).toHaveBeenCalledOnce()
+    expect(m.faces.report).toHaveBeenCalledWith('review.saveFailed')
+  })
+  it('shows malformed persisted data without overwriting it', async () => {
+    localStorage.setItem('test-review', 'invalid')
+    const m = mount()
+    await settle()
+    expect(m.view.getByText(en['review.loadFailed'])).toBeTruthy()
+    expect(localStorage.getItem('test-review')).toBe('invalid')
+  })
+  it('filters and folds the tree, preserving its selection while hidden', async () => {
+    const m = mount()
+    await settle()
+    const tree = within(m.view.container.querySelector('[data-forge-file-tree]')!)
+    fireEvent.click(tree.getByRole('button', { name: 'src' }))
+    fireEvent.change(tree.getByRole('textbox'), { target: { value: 'app.ts' } })
+    fireEvent.click(tree.getByRole('button', { name: 'src/app.ts' }))
+    expect(tree.getByRole('button', { name: 'src/app.ts' }).getAttribute('aria-current')).toBe('true')
+    const toggle = m.view.getByRole('button', { name: en['diff.moveFileTreeRight'] })
+    toggle.focus()
+    fireEvent.click(toggle)
+    expect(m.view.getByRole('button', { name: en['diff.hideFileTree'] })).toBe(toggle)
+    expect(toggle.getAttribute('aria-expanded')).toBe('true')
+    expect(document.activeElement).toBe(toggle)
+    expect(tree.getByRole('button', { name: 'src/app.ts' }).getAttribute('aria-current')).toBe('true')
+    fireEvent.click(toggle)
+    expect(m.view.getByRole('button', { name: en['diff.showFileTreeLeft'] })).toBe(toggle)
+    expect(toggle.getAttribute('aria-expanded')).toBe('false')
+    expect(document.activeElement).toBe(toggle)
+    fireEvent.click(toggle)
+    expect(m.view.getByRole('button', { name: en['diff.moveFileTreeRight'] })).toBe(toggle)
+    expect(document.activeElement).toBe(toggle)
+    expect(tree.getByRole('textbox')).toHaveProperty('value', 'app.ts')
+    fireEvent.change(tree.getByRole('textbox'), { target: { value: '' } })
+    fireEvent.click(tree.getByRole('button', { name: 'src' }))
+    expect(tree.getByRole('button', { name: 'src/app.ts' })).toBeTruthy()
+  })
+  it('refuses a local reference passed to the PR publication callback', async () => {
+    const renderDiff = DiffFileModule.DiffFile
+    let publish: ReviewActions['publish']
+    vi.spyOn(DiffFileModule, 'DiffFile').mockImplementation((props) => {
+      publish = props.review?.publish
+      return renderDiff(props)
+    })
+    const m = mount({ source: { kind: 'change', url: URL7 } })
+    await settle()
+    expect(publish).toBeDefined()
+    expect(await publish!({ source: { kind: 'local', scope: 'branch' }, comment: {
+      path: 'src/app.ts', side: 'R', startLine: 4, endLine: 4, hunk: '', body: 'Local reference',
+    } })).toBe(en['review.stale'])
+    expect(m.faces.submitReview).not.toHaveBeenCalled()
+  })
+  it('extends a range on one side and adds successive frozen references without submitting a message', async () => {
+    const m = mount()
+    await settle()
+    const section = within(m.section('src/app.ts'))
+    fireEvent.click(section.getByRole('button', { name: 'Select line R4' }))
+    expect(section.queryByRole('textbox')).toBeNull()
+    fireEvent.click(section.getByRole('button', { name: 'Select line R5' }), { shiftKey: true })
+    fireEvent.click(section.getByRole('button', { name: 'Add comment' }))
+    fireEvent.change(section.getByRole('textbox'), { target: { value: 'Explain these lines' } })
+    expect(section.getByRole('textbox')).toHaveProperty('value', 'Explain these lines')
+    fireEvent.click(within(m.section('src/app.ts').querySelector('[data-forge-comment]')!).getByRole('button', { name: 'Add to input' }))
+    expect(m.faces.addReviewToInput.mock.lastCall?.[0]).toMatchObject({ source: { kind: 'local', scope: 'branch' },
+      comment: { path: 'src/app.ts', side: 'R', startLine: 4, endLine: 5, body: 'Explain these lines' } })
+    fireEvent.click(section.getByRole('button', { name: 'Select line L4' }))
+    fireEvent.click(section.getByRole('button', { name: 'Add comment' }))
+    fireEvent.change(section.getByRole('textbox'), { target: { value: 'Why remove this?' } })
+    fireEvent.click(within(m.section('src/app.ts').querySelector('[data-forge-comment]')!).getByRole('button', { name: 'Add to input' }))
+    expect(m.faces.addReviewToInput).toHaveBeenCalledTimes(2)
+    expect(m.section('src/app.ts').querySelectorAll('[data-forge-review-thread="agent"]')).toHaveLength(2)
+    expect(m.faces.submitReview).not.toHaveBeenCalled()
+    expect(m.faces.createChangeRequest).not.toHaveBeenCalled()
+  })
+  it('queues comments and submits them together with the selected review decision', async () => {
+    const m = mount({ source: { kind: 'change', url: URL7 }, state: ready({ changeRequests: [entry(7, snapshot(7))] }) })
+    await settle()
+    const section = within(m.section('src/app.ts'))
+    fireEvent.click(section.getByRole('button', { name: 'Select line R4' }))
+    fireEvent.click(section.getByRole('button', { name: 'Add comment' }))
+    fireEvent.change(section.getByRole('textbox'), { target: { value: 'Please fix' } })
+    fireEvent.click(section.getByRole('button', { name: 'Start review' }))
+    expect(m.faces.submitReview).not.toHaveBeenCalled()
+    const pending = within(m.section('src/app.ts').querySelector('[data-forge-review-thread="pending"]')!)
+    expect(pending.getByText('Please fix')).toBeTruthy()
+    fireEvent.click(pending.getByRole('button', { name: 'Edit' }))
+    fireEvent.change(pending.getByRole('textbox'), { target: { value: 'Please fix the guard' } })
+    fireEvent.click(pending.getByRole('button', { name: 'Done' }))
+    fireEvent.click(m.view.getByRole('button', { name: 'Submit review (1)' }))
+    const dialog = within(m.view.getByRole('dialog', { name: 'Submit review' }))
+    expect(dialog.getAllByRole('textbox')).toHaveLength(1)
+    expect(dialog.queryByText('Please fix the guard')).toBeNull()
+
+    fireEvent.change(m.view.getByRole('textbox', { name: 'Review summary…' }), { target: { value: 'Needs a fix' } })
+    fireEvent.click(m.view.getByRole('radio', { name: 'Request changes' }))
+    fireEvent.click(m.view.getByRole('button', { name: 'Submit review' }))
+    await settle()
+    expect(m.faces.submitReview).toHaveBeenCalledWith(URL7, expect.objectContaining({ kind: 'review', event: 'request-changes', body: 'Needs a fix', headSha: HEAD,
+      comments: [expect.objectContaining({ path: 'src/app.ts', side: 'R', startLine: 4, endLine: 4, body: 'Please fix the guard' })] }))
+    expect(m.faces.reviewQueue({ id: TAB, signal: m.aborter.signal }).getSnapshot().comments).toEqual([])
+    expect(m.section('src/app.ts').querySelector('[data-forge-review-thread="published"]')?.textContent).toContain('Please fix the guard')
+  })
+  it('keeps a pending comment editable when its file leaves the diff', async () => {
+    const m = mount({ source: { kind: 'change', url: URL7 }, state: ready({ changeRequests: [entry(7, snapshot(7))] }) })
+    await settle()
+    const section = within(m.section('src/app.ts'))
+    fireEvent.click(section.getByRole('button', { name: 'Select line R4' }))
+    fireEvent.click(section.getByRole('button', { name: 'Add comment' }))
+    fireEvent.change(section.getByRole('textbox'), { target: { value: 'Keep this draft' } })
+    fireEvent.click(section.getByRole('button', { name: 'Start review' }))
+    m.faces.changeRequestDiff.mockResolvedValue(ok({ ...CHANGE, files: [] }))
+    fireEvent.click(m.view.getByRole('button', { name: 'Refresh changes' }))
+    await settle()
+    const record = within(m.view.container.querySelector('[data-forge-review-file="src/app.ts"]')!)
+    expect(record.getByText('Keep this draft')).toBeTruthy()
+    fireEvent.click(record.getByRole('button', { name: 'Delete' }))
+    expect(m.faces.reviewQueue({ id: TAB, signal: m.aborter.signal }).getSnapshot().comments).toHaveLength(0)
+  })
+  it('retains an uncertain write across tab remount and requires explicit reconciliation', async () => {
+    const m = mount({ source: { kind: 'change', url: URL7 }, state: ready({ changeRequests: [entry(7, snapshot(7))] }),
+      setup: (faces) => { faces.submitReview.mockResolvedValue({ ok: true, value: { ok: false, code: 'unknown', message: 'timeout' } }) } })
+    await settle()
+    const section = within(m.section('src/app.ts'))
+    fireEvent.click(section.getByRole('button', { name: 'Select line R4' }))
+    fireEvent.click(section.getByRole('button', { name: 'Add comment' }))
+    fireEvent.change(section.getByRole('textbox'), { target: { value: 'Comment once' } })
+    fireEvent.click(section.getByRole('button', { name: 'GitHub comment options' }))
+    fireEvent.click(m.view.getByRole('menuitem', { name: 'Publish single comment' }))
+    await settle()
+    expect(new ReviewQueue('test-review').getSnapshot().uncertain).toMatchObject({ kind: 'comment', comment: { body: 'Comment once' } })
+    expect(section.getByRole('button', { name: 'GitHub comment options' })).toHaveProperty('disabled', true)
+    await settle()
+    expect(m.faces.submitReview).toHaveBeenCalledTimes(1)
+    fireEvent.click(m.view.getByRole('button', { name: 'Checked; allow resubmission' }))
+    expect(m.faces.reviewQueue({ id: TAB, signal: m.aborter.signal }).getSnapshot().uncertain).toBeNull()
+  })
+})
diff --git a/packages/experimental/client-ui-forge/tests/code-selection.client.spec.ts b/packages/experimental/client-ui-forge/tests/code-selection.client.spec.ts
new file mode 100644
index 0000000000..e1e05595ba
--- /dev/null
+++ b/packages/experimental/client-ui-forge/tests/code-selection.client.spec.ts
@@ -0,0 +1,75 @@
+// @vitest-environment jsdom
+/** Text selections preserve one diff side and partial endpoints despite interleaved DOM rows. */
+import { afterEach, expect, it, vi } from 'vitest'
+import { codeSideAt, readCodeSelection } from '../src/client/code-selection.ts'
+
+const roots: HTMLElement[] = []
+afterEach(() => {
+  vi.restoreAllMocks()
+  document.getSelection()?.removeAllRanges()
+  for (const root of roots.splice(0)) root.remove()
+})
+
+it('ignores missing selections and nodes outside displayed code', () => {
+  const { root } = fixture()
+  expect(codeSideAt(root, null)).toBeUndefined()
+  expect(codeSideAt(root, root)).toBeUndefined()
+  vi.spyOn(document, 'getSelection').mockReturnValue(null)
+  expect(readCodeSelection(root, 'L')).toBeUndefined()
+})
+
+it('preserves blank code lines and excludes an empty endpoint from the selected range', () => {
+  const { root, nodes } = fixture()
+  nodes[2]!.textContent = ''
+  const selection = document.getSelection()!
+  selection.setBaseAndExtent(nodes[0]!, 0, nodes[3]!, 0)
+  expect(readCodeSelection(root, 'L')).toEqual({ side: 'L', from: 2, to: 3, text: 'old first\n' })
+  selection.setBaseAndExtent(nodes[1]!.firstChild!, 3, nodes[3]!.firstChild!, 0)
+  expect(readCodeSelection(root, 'R')).toEqual({ side: 'R', from: 2, to: 2, text: ' first' })
+  selection.setBaseAndExtent(nodes[1]!.firstChild!, 1, nodes[1]!.firstChild!, 3)
+  expect(readCodeSelection(root, 'L')).toBeUndefined()
+})
+
+function fixture() {
+  const root = document.createElement('div')
+  document.body.append(root)
+  roots.push(root)
+  const nodes = [
+    { side: 'old', line: 2, text: 'old first' }, { side: 'new', line: 2, text: 'new first' },
+    { side: 'old', line: 3, text: 'old last' }, { side: 'new', line: 3, text: 'new last' },
+  ].map(({ side, line, text }) => {
+    const code = document.createElement('span')
+    code.setAttribute('data-review-code', '')
+    code.setAttribute(`data-${side}-line`, String(line))
+    code.textContent = text
+    root.append(code)
+    return code
+  })
+  return { root, nodes }
+}
+
+it('copies only right-side fragments and keeps the actual first and last line numbers', () => {
+  const { root, nodes } = fixture()
+  const start = nodes[1]!.firstChild!
+  const end = nodes[3]!.firstChild!
+  const selection = document.getSelection()!
+  selection.setBaseAndExtent(start, 4, end, 3)
+  expect(codeSideAt(root, start)).toBe('R')
+  expect(readCodeSelection(root, 'R')).toEqual({ side: 'R', from: 2, to: 3, text: 'first\nnew' })
+  selection.setBaseAndExtent(end, 3, start, 4)
+  expect(readCodeSelection(root, 'R')?.text).toBe('first\nnew')
+})
+
+it('keeps left-side selection independent and ignores a collapsed or cross-file selection', () => {
+  const { root, nodes } = fixture()
+  const selection = document.getSelection()!
+  selection.setBaseAndExtent(nodes[0]!.firstChild!, 0, nodes[2]!.firstChild!, 8)
+  expect(codeSideAt(root, nodes[0]!)).toBe('L')
+  expect(readCodeSelection(root, 'L')).toEqual({ side: 'L', from: 2, to: 3, text: 'old first\nold last' })
+  selection.collapseToStart()
+  expect(readCodeSelection(root, 'L')).toBeUndefined()
+  const other = fixture()
+  selection.setBaseAndExtent(nodes[0]!.firstChild!, 0, other.nodes[2]!.firstChild!, 8)
+  expect(readCodeSelection(root, 'L')).toBeUndefined()
+  expect(codeSideAt(root, other.nodes[0]!)).toBeUndefined()
+})
diff --git a/packages/experimental/client-ui-forge/tests/controller.host.spec.ts b/packages/experimental/client-ui-forge/tests/controller.host.spec.ts
index 31777d0497..1d9e14a3f4 100644
--- a/packages/experimental/client-ui-forge/tests/controller.host.spec.ts
+++ b/packages/experimental/client-ui-forge/tests/controller.host.spec.ts
@@ -448,6 +448,26 @@ describe('forgePanel.follow', () => {
 })
 
 describe('forgePanel local changes', () => {
+  it('reports filter configuration overflow separately and recovers after it is reduced', async () => {
+    const { repo } = await project()
+    await withDefaultBranch(repo)
+    await writeFile(join(repo, 'tracked.txt'), 'changed\n')
+    const key = `filter.${'long'.repeat(200)}.clean`
+    await git(repo, 'config', key, 'cat')
+    const opened = await open(repo, { maxDiffBytes: 512, maxOutputBytes: 512 })
+    const follower = reader(opened)
+
+    await expect(follower.until(ready)).resolves.toMatchObject({ checkout: { state: 'ready' }, local: null })
+    await expect(opened.ctx.forgePanel.localDiff(opened.session, { kind: 'unstaged' }, signal))
+      .rejects.toMatchObject({ code: 'forgePanel/filter-config-failed' })
+
+    await git(repo, 'config', '--unset', key)
+    await opened.ctx.forgePanel.refresh(opened.session, signal)
+    await expect(follower.until(state => state.local !== null)).resolves.toMatchObject({ local: { files: [{ path: 'tracked.txt' }] } })
+    await expect(opened.ctx.forgePanel.localDiff(opened.session, { kind: 'unstaged' }, signal))
+      .resolves.toMatchObject({ files: [{ path: 'tracked.txt' }] })
+  })
+
   it('measures the branch scope at each inspection', async () => {
     const { repo } = await project()
     await withDefaultBranch(repo)
@@ -505,6 +525,28 @@ describe('forgePanel local changes', () => {
   })
 })
 
+describe('forgePanel complete checks', () => {
+  it('reads only visible bindings and refuses a different head without changing polling state', async () => {
+    const { repo } = await project()
+    const opened = await open(repo)
+    shellTurn(opened.session, 1, [{ callId: 'create', command: 'gh pr create --fill', output: `${pullUrl(7)}\n` }])
+    await reader(opened).until(state => ready(state) && polled(state, pullUrl(7)))
+    const target = opened.provider.changeRequestFromUrl(pullUrl(7))!
+    const original = snapshot(target)
+    const complete = vi.fn(async () => original)
+    Object.assign(opened.provider, { fetchChecks: complete })
+    await expect(opened.ctx.forgePanel.changeRequestChecks(opened.session, pullUrl(7), original.headSha, signal)).resolves.toEqual(original)
+    await expect(opened.ctx.forgePanel.changeRequestChecks(opened.session, pullUrl(8), original.headSha, signal))
+      .rejects.toMatchObject({ code: 'forgePanel/not-bound' })
+    expect(complete).toHaveBeenCalledTimes(1)
+    await expect(opened.ctx.forgePanel.changeRequestChecks(opened.session, pullUrl(7), 'b'.repeat(40), signal))
+      .rejects.toMatchObject({ code: 'forgePanel/stale-head' })
+    Object.assign(opened.provider, { fetchChecks: async () => ({ code: 'too-large', message: 'Checks exceed limit' }) })
+    await expect(opened.ctx.forgePanel.changeRequestChecks(opened.session, pullUrl(7), original.headSha, signal))
+      .rejects.toMatchObject({ code: 'forgePanel/checks-failed', message: 'Checks exceed limit' })
+  })
+})
+
 describe('forgePanel change request diffs', () => {
   const PATCH = 'diff --git a/src/a.ts b/src/a.ts\n--- a/src/a.ts\n+++ b/src/a.ts\n@@ -1 +1 @@\n-old\n+new\n'
 
@@ -606,6 +648,23 @@ describe('forgePanel change request diffs', () => {
 })
 
 describe('forgePanel worktree blockers', () => {
+  it('recovers checkout inspection when the Session switches to full access on a host without a sandbox', async () => {
+    const { repo } = await project()
+    const opened = await open(repo)
+    opened.sandbox.failure = new Error('sandbox unavailable')
+    const follower = reader(opened)
+    await follower.until(state => state.checkout.state === 'failed')
+
+    setSandboxMode(opened.session, 'danger-full-access')
+    const full = await follower.next(ready)
+    expect(full.checkout).toMatchObject({ state: 'ready', checkout: { root: repo, branch: 'main' } })
+
+    setSandboxMode(opened.session, 'workspace-write')
+    await expect(follower.next(state => state.checkout.state === 'failed')).resolves.toMatchObject({
+      checkout: { state: 'failed', message: 'sandbox unavailable' },
+    })
+  })
+
   it('reinspects when the sandbox mode changes, and blocks a worktree while the Session is read-only', async () => {
     const { repo } = await project()
     const opened = await open(repo)
@@ -1518,6 +1577,31 @@ describe('forgePanel actions', () => {
     expect(opened.provider.actions).toEqual(['ready 7', `merge 7 squash ${head}`, `merge 7 rebase ${head}`, 'ready 7', `merge 7 merge ${head}`])
   })
 
+  it('publishes a review only for a visible binding and validates wire ranges before calling the provider', async () => {
+    const { repo } = await project()
+    const opened = await open(repo)
+    shellTurn(opened.session, 1, [{ callId: 'create', command: 'gh pr create --fill', output: `${pullUrl(7)}\n` }])
+    await reader(opened).until(state => ready(state) && polled(state, pullUrl(7)))
+    const request = { kind: 'comment' as const, headSha: 'a'.repeat(40),
+      comment: { path: 'src/app.ts', side: 'R' as const, startLine: 3, endLine: 5, body: 'Please check' } }
+    expect(await opened.ctx.forgePanel.submitReview(opened.session, pullUrl(7), request, signal))
+      .toMatchObject({ ok: false, code: 'unsupported' })
+    const submit = vi.fn(async () => ({ ok: true as const, url: pullUrl(7) }))
+    Object.assign(opened.provider, { submitReview: submit })
+    expect(await opened.ctx.forgePanel.submitReview(opened.session, pullUrl(7), request, signal))
+      .toEqual({ ok: true, url: pullUrl(7) })
+    expect(submit).toHaveBeenCalledTimes(1)
+    await expect(opened.ctx.forgePanel.submitReview(opened.session, pullUrl(8), request, signal))
+      .rejects.toMatchObject({ code: 'forgePanel/not-bound' })
+    await expect(opened.ctx.forgePanel.submitReview(opened.session, pullUrl(7), { ...request, headSha: 'invalid' }, signal)).rejects.toThrow('Invalid review commit')
+    await expect(opened.ctx.forgePanel.submitReview(opened.session, pullUrl(7), { ...request,
+      comment: { ...request.comment, startLine: 6 } }, signal)).rejects.toThrow('Invalid review comment')
+    await expect(opened.ctx.forgePanel.submitReview(opened.session, pullUrl(7), {
+      kind: 'review', headSha: request.headSha, event: 'comment', body: '', comments: [],
+    }, signal)).rejects.toThrow('Empty review')
+    expect(submit).toHaveBeenCalledTimes(1)
+  })
+
   it('acts only on change requests visibly bound to the Session that a provider serves', async () => {
     const { repo } = await project()
     const opened = await open(repo)
diff --git a/packages/experimental/client-ui-forge/tests/diff-review.client.spec.tsx b/packages/experimental/client-ui-forge/tests/diff-review.client.spec.tsx
new file mode 100644
index 0000000000..d0e34fb884
--- /dev/null
+++ b/packages/experimental/client-ui-forge/tests/diff-review.client.spec.tsx
@@ -0,0 +1,167 @@
+// @vitest-environment jsdom
+/** Diff gestures, browser clipboard output, and retained comments at their captured lines. */
+import { act, cleanup, fireEvent, render, within } from '@testing-library/react'
+import { afterEach, expect, it, vi } from 'vitest'
+import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { DiffFile, type DiffFileProps } from '../src/client/DiffFile.tsx'
+import { en } from '../src/client/locales.ts'
+import { ReviewQueue } from '../src/client/review-queue.ts'
+import { selectReviewLines } from '../src/client/review.ts'
+import type { ReviewActions } from '../src/client/ReviewComposer.tsx'
+import type { ForgeDiffFile } from '../src/types.ts'
+
+const file: ForgeDiffFile = { path: 'a.txt', previousPath: null, status: 'modified', binary: false, oversized: false, untracked: false, additions: 3, deletions: 2,
+  hunks: [{ oldStart: 2, oldLines: 3, newStart: 2, newLines: 4, lines: [' same', '-old first', '-old last', '+new first', '+new last', '+'] }] }
+const source = { kind: 'local' as const, scope: 'branch' }
+const t = makeTranslate(en)
+afterEach(() => { cleanup(); document.getSelection()?.removeAllRanges(); localStorage.clear(); vi.restoreAllMocks() })
+
+function mount(overrides: Partial<DiffFileProps> = {}) {
+  const addToInput = vi.fn().mockReturnValue(true)
+  const records = new ReviewQueue('diff-review')
+  const review: ReviewActions = { source, addToInput, records, onQuoted: (item) => { records.recordAgent(item) } }
+  const props: DiffFileProps = { file, visible: true, expanded: true, onToggle: vi.fn(), large: false, revealed: false, onReveal: vi.fn(),
+    text: undefined, open: new Set(), onExpand: vi.fn(), split: true, wrap: true, badge: '', tooltip: 'a.txt', actions: [],
+    sectionRef: vi.fn(), review, t, ...overrides }
+  const view = render(<DiffFile {...props} />)
+  const line = (name: string) => view.getByRole('button', { name: `Select line ${name}` })
+  const code = (side: 'L' | 'R', no: number): HTMLElement => {
+    const element = view.container.querySelector<HTMLElement>(`[data-review-code][data-${side === 'L' ? 'old' : 'new'}-line="${no}"]`)
+    if (element === null) throw new Error('missing displayed line')
+    return element
+  }
+  const select = (side: 'L' | 'R', from: number, to: number) => {
+    const start = code(side, from), end = code(side, to)
+    fireEvent.pointerDown(start, { button: 0, pointerId: 1 })
+    act(() => { document.getSelection()!.setBaseAndExtent(start, 0, end, end.childNodes.length) })
+    fireEvent.pointerUp(window, { pointerId: 1 })
+  }
+  return { ...view, props, line, code, select, addToInput, records }
+}
+
+it('selects a native range on one side, copies that side, and clears the range when its editor closes', () => {
+  const m = mount()
+  m.select('R', 3, 4)
+  expect(m.getByRole('button', { name: 'Add comment' })).toBeTruthy()
+  expect(m.line('R3').getAttribute('aria-pressed')).toBe('true')
+  expect(m.line('L3').getAttribute('aria-pressed')).toBe('false')
+  const setData = vi.fn()
+  const copied = new Event('copy', { bubbles: true, cancelable: true })
+  Object.defineProperty(copied, 'clipboardData', { value: { setData } })
+  fireEvent(m.code('R', 3), copied)
+  expect(copied.defaultPrevented).toBe(true)
+  expect(setData).toHaveBeenCalledWith('text/plain', 'new first\nnew last')
+  fireEvent(document, new Event('selectionchange'))
+  expect(m.getByRole('button', { name: 'Add comment' })).toBeTruthy()
+  fireEvent.pointerDown(m.getByRole('button', { name: 'Add comment' }), { button: 0 })
+  fireEvent.click(m.getByRole('button', { name: 'Add comment' }))
+  const input = m.getByRole('textbox')
+  fireEvent.change(input, { target: { value: 'Explain this range' } })
+  const inputCopy = new Event('copy', { bubbles: true, cancelable: true })
+  Object.defineProperty(inputCopy, 'clipboardData', { value: { setData } })
+  fireEvent(input, inputCopy)
+  expect(inputCopy.defaultPrevented).toBe(false)
+  fireEvent.click(m.getByRole('button', { name: 'Add to input' }))
+  expect(m.addToInput.mock.lastCall?.[0]).toMatchObject({ source, comment: { side: 'R', startLine: 3, endLine: 4, body: 'Explain this range' } })
+  expect(document.getSelection()!.isCollapsed).toBe(true)
+  expect(m.container.querySelector('[data-forge-review-thread="agent"]')).not.toBeNull()
+})
+
+it('tracks native selection changes, ignores clipboard events without data, and clears a collapsed range', () => {
+  const m = mount()
+  const first = m.code('L', 2), last = m.code('L', 4)
+  fireEvent.pointerDown(first, { button: 0 })
+  act(() => { document.getSelection()!.setBaseAndExtent(first, 0, last, last.childNodes.length) })
+  fireEvent(document, new Event('selectionchange'))
+  expect(m.queryByRole('button', { name: 'Add comment' })).toBeNull()
+  fireEvent.pointerCancel(window)
+  expect(m.line('L2').getAttribute('aria-pressed')).toBe('true')
+  const noClipboard = new Event('copy', { cancelable: true })
+  Object.defineProperty(noClipboard, 'clipboardData', { value: null })
+  fireEvent(document, noClipboard)
+  expect(noClipboard.defaultPrevented).toBe(false)
+  act(() => { document.getSelection()!.setBaseAndExtent(last, 0, last, last.childNodes.length) })
+  fireEvent(document, new Event('selectionchange'))
+  expect(m.line('L2').getAttribute('aria-pressed')).toBe('false')
+  expect(m.line('L4').getAttribute('aria-pressed')).toBe('true')
+  act(() => { document.getSelection()!.removeAllRanges() })
+  const setData = vi.fn()
+  const copy = new Event('copy')
+  Object.defineProperty(copy, 'clipboardData', { value: { setData } })
+  fireEvent(document, copy)
+  expect(setData).not.toHaveBeenCalled()
+  fireEvent(document, new Event('selectionchange'))
+  expect(m.queryByRole('button', { name: 'Add comment' })).toBeNull()
+})
+
+it('extends gutter drags only within their side and requires the plus before editing', () => {
+  const m = mount()
+  fireEvent.pointerDown(m.line('L3'), { button: 2 })
+  expect(m.queryByRole('button', { name: 'Add comment' })).toBeNull()
+  fireEvent.pointerDown(m.line('L3'), { button: 0 })
+  fireEvent.pointerOver(m.line('L4'), { buttons: 0 })
+  fireEvent.pointerOver(m.line('R4'), { buttons: 1 })
+  expect(m.line('R4').getAttribute('aria-pressed')).toBe('false')
+  fireEvent.pointerOver(m.line('L4'), { buttons: 1 })
+  expect(m.line('L4').getAttribute('aria-pressed')).toBe('true')
+  fireEvent.pointerUp(window)
+  fireEvent.click(m.line('R3'), { detail: 1 })
+  expect(m.line('R3').getAttribute('aria-pressed')).toBe('false')
+  fireEvent.click(m.getByRole('button', { name: 'Add comment' }))
+  fireEvent.pointerDown(m.line('R3'), { button: 0 })
+  fireEvent.click(m.line('R3'))
+  expect(m.getByRole('region', { name: 'Comment on L3–4' })).toBeTruthy()
+  fireEvent.pointerDown(m.code('R', 3), { button: 0 })
+  fireEvent.pointerUp(window)
+  fireEvent.click(m.getByRole('button', { name: 'Cancel' }))
+  expect(m.queryByRole('textbox')).toBeNull()
+  fireEvent.click(m.line('R3'), { shiftKey: true })
+  expect(m.line('R3').getAttribute('aria-pressed')).toBe('true')
+})
+
+it('keeps shift text selection and allows ordinary text selection when review actions are absent', () => {
+  const m = mount()
+  m.select('R', 3, 3)
+  const selected = document.getSelection()!.toString()
+  fireEvent.pointerDown(m.code('R', 4), { button: 0, shiftKey: true })
+  expect(document.getSelection()!.toString()).toBe(selected)
+  fireEvent.pointerUp(window)
+  fireEvent.pointerDown(m.code('L', 3), { button: 0, shiftKey: true })
+  expect(document.getSelection()!.isCollapsed).toBe(true)
+  fireEvent.pointerUp(window)
+  const { review: _review, ...withoutReview } = m.props
+  m.rerender(<DiffFile {...withoutReview} />)
+  m.select('R', 3, 4)
+  expect(m.queryByRole('button', { name: 'Add comment' })).toBeNull()
+})
+
+it('refuses native and gutter ranges spanning collapsed context between hunks', () => {
+  const m = mount({ file: { ...file, hunks: [...file.hunks,
+    { oldStart: 10, oldLines: 1, newStart: 10, newLines: 1, lines: ['-before', '+after'] }] } })
+  m.select('R', 4, 10)
+  expect(m.queryByRole('button', { name: 'Add comment' })).toBeNull()
+  fireEvent.click(m.line('R4'))
+  fireEvent.click(m.line('R10'), { shiftKey: true })
+  expect(m.line('R4').getAttribute('aria-pressed')).toBe('true')
+  expect(m.line('R10').getAttribute('aria-pressed')).toBe('false')
+})
+
+it('places left and right records in unified rows and retains outdated records for hidden hunks', () => {
+  const m = mount({ split: false })
+  act(() => {
+    for (const side of ['L', 'R'] as const) m.records.recordAgent({ source, comment: { ...selectReviewLines(file, side, 3, 4)!, body: side } })
+    m.records.recordAgent({ source, comment: { ...selectReviewLines(file, 'R', 3, 4)!, hunk: 'old patch', body: 'Outdated' } })
+  })
+  expect(m.container.querySelectorAll('[data-forge-review-thread]')).toHaveLength(3)
+  expect(m.getByText('Outdated')).toBeTruthy()
+  fireEvent.click(m.line('L3'))
+  fireEvent.click(m.getByRole('button', { name: 'Add comment' }))
+  fireEvent.click(m.getByRole('button', { name: 'Cancel' }))
+  for (const overrides of [{ binary: true }, { oversized: true }, { hunks: [] }]) {
+    m.rerender(<DiffFile {...m.props} file={{ ...file, ...overrides }} />)
+    expect(m.container.querySelectorAll('[data-forge-review-thread]')).toHaveLength(3)
+  }
+  m.rerender(<DiffFile {...m.props} large />)
+  expect(m.container.querySelectorAll('[data-forge-review-thread]')).toHaveLength(3)
+  expect(within(m.container).getByRole('button', { name: /changed lines/ })).toBeTruthy()
+})
diff --git a/packages/experimental/client-ui-forge/tests/file-tree.client.spec.tsx b/packages/experimental/client-ui-forge/tests/file-tree.client.spec.tsx
new file mode 100644
index 0000000000..8f5dce8931
--- /dev/null
+++ b/packages/experimental/client-ui-forge/tests/file-tree.client.spec.tsx
@@ -0,0 +1,157 @@
+// @vitest-environment jsdom
+/** Changed-file directories, searching, and keyboard disclosure without reading repository contents. */
+import { useState } from 'react'
+import { act, cleanup, fireEvent, render } from '@testing-library/react'
+import { afterEach, expect, it, vi } from 'vitest'
+import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import type { ForgeDiffFile } from '../src/types.ts'
+import { ChangedFiles, type ChangedFilesState } from '../src/client/ChangedFiles.tsx'
+import { changedFileTree, filterFileTree } from '../src/client/file-tree.ts'
+import { en } from '../src/client/locales.ts'
+import { FileTreePane } from '../src/client/FileTreePane.tsx'
+
+afterEach(() => { cleanup(); vi.restoreAllMocks() })
+
+function file(path: string, previousPath: string | null = null): ForgeDiffFile {
+  return { path, previousPath, status: previousPath === null ? 'modified' : 'renamed', binary: false, oversized: false, untracked: false, additions: 1, deletions: 0, hunks: [] }
+}
+
+it('compacts directory chains, sorts directories before files, and keeps identical basenames distinct', () => {
+  const tree = changedFileTree([file('z.ts'), file('src/client/b.ts'), file('docs/a.ts'), file('src/client/a.ts')])
+  expect(tree.map(node => [node.kind, node.name])).toEqual([['directory', 'docs'], ['directory', 'src/client'], ['file', 'z.ts']])
+  expect(filterFileTree(tree, 'A.TS').map(node => node.path)).toEqual(['docs', 'src/client'])
+  expect(filterFileTree(tree, ' ')).toBe(tree)
+  expect(filterFileTree(tree, 'missing')).toEqual([])
+  expect(changedFileTree([])).toEqual([])
+})
+
+it('matches renamed paths and keeps file names containing backslashes literal', () => {
+  const tree = changedFileTree([file('lib/new.ts', 'src/old.ts'), file('a\\b.ts')])
+  expect(filterFileTree(tree, 'old.ts').map(node => node.path)).toEqual(['lib'])
+  expect(tree[1]).toMatchObject({ kind: 'file', path: 'a\\b.ts' })
+})
+
+it('preserves input order for repeated paths with distinct file metadata', () => {
+  const first = file('same.ts', 'original.ts'), second = file('same.ts')
+  expect(changedFileTree([file('z.ts'), first, file('a.ts'), second]).map(node => node.kind === 'file' && node.file))
+    .toEqual([file('a.ts'), first, second, file('z.ts')])
+})
+
+it('searches through folded directories and restores their fold state when search is cleared', () => {
+  const jump = vi.fn()
+  const files = [file('src/a.ts'), file('src/b.ts'), file('README.md')]
+  function Harness() {
+    const [state, setState] = useState<ChangedFilesState>({ query: '', collapsed: {}, selected: null })
+    return <ChangedFiles files={files} state={state} t={makeTranslate(en)} jump={jump}
+      filter={(query) => { setState(value => ({ ...value, query })) }}
+      toggle={(path) => { setState(value => ({ ...value, collapsed: { ...value.collapsed, [path]: !value.collapsed[path] } })) }} />
+  }
+  const view = render(<Harness />)
+  fireEvent.keyDown(view.getByRole('button', { name: 'src' }), { key: 'ArrowRight' })
+  fireEvent.keyDown(view.getByRole('button', { name: 'src' }), { key: 'Enter' })
+  fireEvent.keyDown(view.getByRole('button', { name: 'src/a.ts' }), { key: 'ArrowLeft' })
+  fireEvent.click(view.getByRole('button', { name: 'src' }))
+  fireEvent.click(view.getByRole('button', { name: 'src' }))
+  fireEvent.keyDown(view.getByRole('button', { name: 'src' }), { key: 'ArrowLeft' })
+  expect(view.queryByRole('button', { name: 'src/a.ts' })).toBeNull()
+  fireEvent.change(view.getByRole('textbox'), { target: { value: 'a.ts' } })
+  fireEvent.click(view.getByRole('button', { name: 'src/a.ts' }))
+  expect(jump).toHaveBeenCalledWith('src/a.ts')
+  expect(view.queryByRole('button', { name: 'README.md' })).toBeNull()
+  fireEvent.change(view.getByRole('textbox'), { target: { value: '' } })
+  expect(view.queryByRole('button', { name: 'src/a.ts' })).toBeNull()
+  fireEvent.keyDown(view.getByRole('button', { name: 'src' }), { key: 'ArrowRight' })
+  expect(view.getByRole('button', { name: 'src/a.ts' })).toBeTruthy()
+  fireEvent.change(view.getByRole('textbox'), { target: { value: 'missing' } })
+  expect(view.getByText('No matching files')).toBeTruthy()
+})
+
+it('keeps text-caret navigation in the filter while other keys bubble to the menu', () => {
+  const key = vi.fn()
+  const view = render(<div onKeyDown={key}><ChangedFiles files={[file('new.ts', 'old.ts')]}
+    state={{ query: '', collapsed: {}, selected: 'new.ts' }} t={makeTranslate(en)} filter={vi.fn()} toggle={vi.fn()} jump={vi.fn()} /></div>)
+  for (const name of ['Home', 'End', 'ArrowLeft', 'ArrowRight']) fireEvent.keyDown(view.getByRole('textbox'), { key: name })
+  expect(key).not.toHaveBeenCalled()
+  fireEvent.keyDown(view.getByRole('textbox'), { key: 'ArrowDown' })
+  expect(key).toHaveBeenCalledOnce()
+  expect(view.getByRole('button').getAttribute('aria-current')).toBe('true')
+})
+
+it('bounds pointer and keyboard resizing, retains hidden width, and stops cancelled drags', () => {
+  let containerWidth = 1000
+  vi.spyOn(HTMLElement.prototype, 'clientWidth', 'get').mockImplementation(() => containerWidth)
+  let measure: ResizeObserverCallback = () => {}
+  const disconnect = vi.spyOn(ResizeObserver.prototype, 'disconnect')
+  // Capture the observer callback so a parent resize can be delivered without a layout engine.
+  const NativeObserver = ResizeObserver
+  vi.stubGlobal('ResizeObserver', class extends NativeObserver {
+    constructor(callback: ResizeObserverCallback) { super(callback); measure = callback }
+    override observe() {}
+  })
+  try {
+    const props = { files: [file('a.ts')], state: { query: '', collapsed: {}, selected: null }, t: makeTranslate(en), filter: vi.fn(), toggle: vi.fn(), jump: vi.fn(), id: 'tree' }
+    const view = render(<FileTreePane {...props} position="right" />)
+    const handle = view.getByRole('separator')
+    const capture = vi.fn(), release = vi.fn()
+    Object.defineProperties(handle, { setPointerCapture: { value: capture }, releasePointerCapture: { value: release } })
+    const width = () => Number(handle.getAttribute('aria-valuenow'))
+    fireEvent.keyDown(handle, { key: 'Enter' })
+    expect(width()).toBe(240)
+    for (const [key, value] of [['ArrowLeft', 260], ['ArrowRight', 240], ['Home', 200], ['End', 600]] as const) {
+      fireEvent.keyDown(handle, { key }); expect(width()).toBe(value)
+    }
+    fireEvent.keyDown(handle, { key: 'Home' })
+    fireEvent.pointerDown(handle, { button: 2, pointerId: 1, clientX: 500 })
+    expect(capture).not.toHaveBeenCalled()
+    fireEvent.pointerMove(handle, { pointerId: 1, clientX: 300 })
+    fireEvent.pointerUp(handle, { pointerId: 1, clientX: 300 })
+    expect(width()).toBe(200)
+    fireEvent.pointerDown(handle, { button: 0, pointerId: 1, clientX: 500 })
+    fireEvent.pointerMove(handle, { pointerId: 2, clientX: 300 })
+    expect(width()).toBe(200)
+    fireEvent.pointerMove(handle, { pointerId: 1, clientX: 400 })
+    expect(width()).toBe(300)
+    fireEvent.pointerUp(handle, { pointerId: 1, clientX: 350 })
+    expect(width()).toBe(350)
+    expect(release).toHaveBeenCalledWith(1)
+    for (const end of [fireEvent.pointerCancel, fireEvent.lostPointerCapture]) {
+      fireEvent.pointerDown(handle, { button: 0, pointerId: 1, clientX: 500 })
+      end(handle, { pointerId: 1 })
+      fireEvent.pointerMove(handle, { pointerId: 1, clientX: 300 })
+      expect(width()).toBe(350)
+    }
+    view.rerender(<FileTreePane {...props} position="hidden" />)
+    containerWidth = 0
+    act(() => { measure([], new NativeObserver(() => {})) })
+    expect(width()).toBe(350)
+    containerWidth = 1000
+    view.rerender(<FileTreePane {...props} position="right" />)
+    act(() => { measure([], new NativeObserver(() => {})) })
+    expect(width()).toBe(350)
+    view.rerender(<FileTreePane {...props} position="left" />)
+    expect(view.getByRole('separator')).toBe(handle)
+    expect(width()).toBe(350)
+    fireEvent.keyDown(handle, { key: 'ArrowRight' })
+    expect(width()).toBe(370)
+    fireEvent.keyDown(handle, { key: 'ArrowLeft' })
+    expect(width()).toBe(350)
+    fireEvent.pointerDown(handle, { button: 0, pointerId: 1, clientX: 350 })
+    fireEvent.pointerMove(handle, { pointerId: 1, clientX: 400 })
+    expect(width()).toBe(400)
+    fireEvent.pointerUp(handle, { pointerId: 1, clientX: 450 })
+    expect(width()).toBe(450)
+    containerWidth = 600
+    act(() => { measure([], new NativeObserver(() => {})) })
+    expect(width()).toBe(280)
+    view.unmount()
+    expect(disconnect).toHaveBeenCalled()
+  } finally { vi.unstubAllGlobals() }
+})
+
+it('can mount into a detached fragment without measuring a nonexistent parent element', () => {
+  const observe = vi.spyOn(ResizeObserver.prototype, 'observe')
+  const view = render(<FileTreePane files={[]} state={{ query: '', collapsed: {}, selected: null }} t={makeTranslate(en)}
+    filter={vi.fn()} toggle={vi.fn()} jump={vi.fn()} id="detached-tree" position="right" />, { container: document.createDocumentFragment() })
+  expect(observe).not.toHaveBeenCalled()
+  view.unmount()
+})
diff --git a/packages/experimental/client-ui-forge/tests/forge-tab.client.spec.tsx b/packages/experimental/client-ui-forge/tests/forge-tab.client.spec.tsx
index ec800951ab..d13fc4dc36 100644
--- a/packages/experimental/client-ui-forge/tests/forge-tab.client.spec.tsx
+++ b/packages/experimental/client-ui-forge/tests/forge-tab.client.spec.tsx
@@ -54,6 +54,7 @@ function tab(state: ForgePanelState | null, options: { disconnected?: boolean; v
   const remove = vi.fn<(entry: ForgePanelChangeRequest) => void>()
   const markReady = vi.fn<(entry: ForgePanelChangeRequest) => Promise<void>>(async () => {})
   const merge = vi.fn<(entry: ForgePanelChangeRequest, request: MergeRequest) => Promise<void>>(async () => {})
+  const readChecks = vi.fn<ForgeTabProps['readChecks']>(async () => snapshot(1))
   const restore = vi.fn<() => void>()
   const openLink = vi.fn<(url: string) => void>()
   const copyText = vi.fn<(text: string) => void>()
@@ -67,12 +68,12 @@ function tab(state: ForgePanelState | null, options: { disconnected?: boolean; v
     usePanel: bindSnapshotSelector(panel),
     useHost: bindSnapshotSelector(host),
     useLocale: bindSnapshotSelector(createSnapshotStore<string>('en')),
-    reconnect, refresh, remove, markReady, merge, restore, openLink, copyText, copyPath, reportVisible, createChangeRequest,
+    reconnect, refresh, remove, markReady, merge, readChecks, restore, openLink, copyText, copyPath, reportVisible, createChangeRequest,
     t,
   }
   const view = render(<ForgeTab {...props} />)
   return {
-    view, panel, visibility, reconnect, refresh, remove, markReady, merge, restore, openLink, copyText, copyPath, reportVisible,
+    view, panel, visibility, reconnect, refresh, remove, markReady, merge, readChecks, restore, openLink, copyText, copyPath, reportVisible,
     createChangeRequest, openResource,
   }
 }
diff --git a/packages/experimental/client-ui-forge/tests/git.host.spec.ts b/packages/experimental/client-ui-forge/tests/git.host.spec.ts
index adb0b836f6..b956f0b858 100644
--- a/packages/experimental/client-ui-forge/tests/git.host.spec.ts
+++ b/packages/experimental/client-ui-forge/tests/git.host.spec.ts
@@ -4,6 +4,7 @@ import { afterEach, describe, expect, it, vi } from 'vitest'
 import { Context } from '@deepseek-ai/cordis'
 import { SandboxUnavailableError } from '@deepseek-ai/dsh-sandbox'
 import LocalSandbox from '@deepseek-ai/dsh-sandbox-local'
+import { setSandboxMode } from '@deepseek-ai/dsh-sandbox-policy'
 import { hasBranch, inspectCheckout, listBranches } from '../src/git.ts'
 import type { GitConfig } from '../src/git.ts'
 import { commitAt, git, gitContext, plainSession, repository, sandboxRecord, scratch, script } from './harness.ts'
@@ -54,6 +55,48 @@ async function branched(root: string): Promise<string> {
   return repo
 }
 
+describe('Session permissions for Git inspection', () => {
+  it.each(['read-only', 'workspace-write', 'danger-full-access'] as const)('uses %s for checkout and branch reads without changing the index', async (mode) => {
+    const repo = await repository(await directory())
+    const record = sandboxRecord()
+    const ctx = await context(record, repo)
+    const current = session(repo)
+    setSandboxMode(current, mode)
+    const index = join(repo, '.git', 'index')
+    const before = await readFile(index)
+    const beforeStat = await stat(index)
+
+    await expect(inspectCheckout(ctx, CONFIG, current, repo, live())).resolves.toMatchObject({ checkout: { branch: 'main' } })
+    await expect(listBranches(ctx, CONFIG, current, repo, 50, live())).resolves.toEqual({ current: 'main', branches: ['main'] })
+    await expect(hasBranch(ctx, CONFIG, current, repo, 'main', live())).resolves.toBe(true)
+
+    expect(record.calls).toHaveLength(mode === 'danger-full-access' ? 0 : 10)
+    expect(record.calls.every(call => call.policy.mode === mode)).toBe(true)
+    expect(await readFile(index)).toEqual(before)
+    expect((await stat(index)).mtimeMs).toBe(beforeStat.mtimeMs)
+    await expect(access(join(repo, '.git', 'index.lock'))).rejects.toThrow()
+  })
+
+  it.each(['read-only', 'workspace-write', 'danger-full-access'] as const)('handles an unavailable sandbox under %s without widening access', async (mode) => {
+    const repo = await repository(await directory())
+    const record = sandboxRecord()
+    const failure = new SandboxUnavailableError('read-only')
+    record.failure = failure
+    const ctx = await context(record, repo)
+    const current = session(repo)
+    setSandboxMode(current, mode)
+    const spawn = vi.spyOn(ctx.subprocess, 'spawn')
+
+    if (mode === 'danger-full-access') {
+      await expect(inspectCheckout(ctx, CONFIG, current, repo, live())).resolves.toMatchObject({ checkout: { branch: 'main' } })
+      expect(spawn).toHaveBeenCalledTimes(7)
+    } else {
+      await expect(inspectCheckout(ctx, CONFIG, current, repo, live())).rejects.toBe(failure)
+      expect(spawn).not.toHaveBeenCalled()
+    }
+  })
+})
+
 describe('inspectCheckout', () => {
   it('reads the root, shared Git directory, branch, commit, upstream, and remotes of the checkout with seven read-only commands', async () => {
     const root = await directory()
@@ -88,7 +131,7 @@ describe('inspectCheckout', () => {
       'symbolic-ref --quiet --short HEAD',
     ])
     for (const call of record.calls) {
-      expect(call.policy).toMatchObject({ mode: 'read-only', workspaceRoot: repo })
+      expect(call.policy).toMatchObject({ mode: 'workspace-write', workspaceRoot: repo })
       expect(call.argv.slice(1, 1 + GIT_PREFIX.length)).toEqual(GIT_PREFIX)
     }
   })
@@ -279,7 +322,7 @@ describe('listBranches', () => {
       'symbolic-ref --quiet --short HEAD',
     ])
     for (const call of record.calls) {
-      expect(call.policy).toMatchObject({ mode: 'read-only', workspaceRoot: repo })
+      expect(call.policy).toMatchObject({ mode: 'workspace-write', workspaceRoot: repo })
       expect(call.argv.slice(1, 1 + GIT_PREFIX.length)).toEqual(GIT_PREFIX)
     }
   })
@@ -352,7 +395,7 @@ describe('hasBranch', () => {
       'show-ref --verify --quiet refs/heads/dsh/0a1b2c3d',
     ])
     for (const call of record.calls) {
-      expect(call.policy).toMatchObject({ mode: 'read-only', workspaceRoot: repo })
+      expect(call.policy).toMatchObject({ mode: 'workspace-write', workspaceRoot: repo })
       expect(call.argv.slice(1, 1 + GIT_PREFIX.length)).toEqual(GIT_PREFIX)
     }
   })
@@ -409,13 +452,15 @@ describe.skipIf(!sandboxUsable)('Git inspection under the local sandbox', () =>
     const index = join(repo, '.git', 'index')
     const before = await stat(index)
     const ctx = await context(sandboxRecord(), repo, true)
+    const readOnly = session(repo)
+    setSandboxMode(readOnly, 'read-only')
     const confine = vi.spyOn(ctx.sandbox, 'confine')
 
-    await expect(inspectCheckout(ctx, CONFIG, session(repo), repo, live())).resolves.toEqual({
+    await expect(inspectCheckout(ctx, CONFIG, readOnly, repo, live())).resolves.toEqual({
       checkout: { root: repo, branch: 'main', linked: false, commit: await git(repo, 'rev-parse', '--short', 'HEAD') },
       commonDir: join(repo, '.git'), upstream: null, remotes: [],
     })
-    await expect(listBranches(ctx, CONFIG, session(repo), repo, 50, live())).resolves.toEqual({ current: 'main', branches: ['main'] })
+    await expect(listBranches(ctx, CONFIG, readOnly, repo, 50, live())).resolves.toEqual({ current: 'main', branches: ['main'] })
 
     expect(confine).toHaveBeenCalledTimes(9)
     expect(confine.mock.calls.every(call => call[1].mode === 'read-only')).toBe(true)
diff --git a/packages/experimental/client-ui-forge/tests/local-diff-safety.host.spec.ts b/packages/experimental/client-ui-forge/tests/local-diff-safety.host.spec.ts
new file mode 100644
index 0000000000..fb5f9ab250
--- /dev/null
+++ b/packages/experimental/client-ui-forge/tests/local-diff-safety.host.spec.ts
@@ -0,0 +1,248 @@
+/** Real Git helpers and filtered files under the panel's command-local restrictions. */
+import { createHash } from 'node:crypto'
+import { access, readFile, rm, stat, writeFile } from 'node:fs/promises'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { SandboxUnavailableError, type SandboxMode } from '@deepseek-ai/dsh-sandbox'
+import { setSandboxMode } from '@deepseek-ai/dsh-sandbox-policy'
+import { inspectCheckout } from '../src/git.ts'
+import { FilterConfigError, localChanges, localDiff } from '../src/local-diff.ts'
+import type { DiffConfig } from '../src/local-diff.ts'
+import { git, gitContext, plainSession, repository, sandboxRecord, scratch } from './harness.ts'
+
+const CONFIG: DiffConfig = {
+  gitCommand: 'git', gitTimeoutMs: 10_000, graceMs: 500, maxOutputBytes: 1_048_576, maxDiffBytes: 1_048_576, maxUntrackedFiles: 100,
+}
+const cleanups: (() => Promise<void>)[] = []
+afterEach(async () => { for (const cleanup of cleanups.splice(0).reverse()) await cleanup() })
+
+async function setup(mode: SandboxMode = 'danger-full-access', real = false) {
+  const { path: root, remove } = await scratch('dsh-forge-diff-helpers-')
+  cleanups.push(remove)
+  const repo = await repository(root)
+  const record = sandboxRecord()
+  const ctx = await gitContext(record, repo, real)
+  cleanups.push(() => ctx.fiber.dispose())
+  const session = plainSession(repo)
+  setSandboxMode(session, mode)
+  const signal = new AbortController().signal
+  const fork = { commit: await git(repo, 'rev-parse', 'HEAD'), label: 'main' }
+  await git(repo, 'remote', 'add', 'origin', 'https://example.invalid/repo')
+  await git(repo, 'update-ref', 'refs/remotes/origin/main', fork.commit)
+  await git(repo, 'symbolic-ref', 'refs/remotes/origin/HEAD', 'refs/remotes/origin/main')
+  const inspection = await inspectCheckout(ctx, CONFIG, session, repo, signal)
+  if (inspection === undefined) throw new Error('fixture checkout is missing')
+  const marker = join(root, 'executed')
+  const script = join(root, 'helper.cjs')
+  await writeFile(script, `const fs = require('node:fs'); fs.writeFileSync(${JSON.stringify(marker)}, 'ran');
+if (process.argv[2] === 'clean') process.stdout.write('converted\\n' + fs.readFileSync(0, 'utf8'));
+else process.exit(1);
+`)
+  const quote = (value: string): string => `'${value.replaceAll('\\', '/').replaceAll("'", "'\\''")}'`
+  const command = `${quote(process.execPath)} ${quote(script)}`
+  return { root, repo, ctx, session, signal, fork, inspection, marker, command, record }
+}
+
+describe('diff helper restrictions', () => {
+  it.each(['read-only', 'workspace-write'] as const)('passes filter overrides to the subprocess after %s confinement', async (mode) => {
+    const b = await setup(mode)
+    await writeFile(join(b.repo, '.gitattributes'), 'tracked.txt filter=demo -text\n')
+    // Other drivers, including globally configured Git LFS, can precede this fixture's filter.
+    await git(b.repo, 'config', 'filter.other.clean', `${b.command} clean`)
+    await git(b.repo, 'config', 'filter.demo.clean', `${b.command} clean`)
+    await writeFile(join(b.repo, 'tracked.txt'), 'changed\n')
+    const spawn = vi.spyOn(b.ctx.subprocess, 'spawn')
+
+    try {
+      await localDiff(b.ctx, CONFIG, b.session, b.repo, null, { kind: 'unstaged' }, b.signal)
+      await localChanges(b.ctx, CONFIG, b.session, b.inspection, null, b.signal)
+      const diffs = spawn.mock.calls.map(([spec]) => spec).filter(spec => spec.argv.includes('diff'))
+      expect(diffs).toHaveLength(2)
+      for (const spec of diffs) {
+        const overrides = Array.from({ length: Number(spec.env?.GIT_CONFIG_COUNT) }, (_, index) => [
+          spec.env?.[`GIT_CONFIG_KEY_${index}`], spec.env?.[`GIT_CONFIG_VALUE_${index}`],
+        ])
+        expect(overrides).toEqual(expect.arrayContaining([
+          ['filter.other.clean', ''], ['filter.other.process', ''], ['filter.other.required', 'false'],
+          ['filter.demo.clean', ''], ['filter.demo.process', ''], ['filter.demo.required', 'false'],
+        ]))
+      }
+      expect(b.record.calls.filter(call => call.argv.includes('diff')).map(call => call.policy.mode)).toEqual([mode, mode])
+      await expect(access(b.marker)).rejects.toThrow()
+    } finally { spawn.mockRestore() }
+  })
+
+  it.skipIf(process.platform !== 'darwin' && process.platform !== 'linux')('disables a writable helper through the real workspace-write sandbox', async ({ skip }) => {
+    let b: Awaited<ReturnType<typeof setup>>
+    try {
+      b = await setup('workspace-write', true)
+    } catch (error) {
+      if (!(error instanceof SandboxUnavailableError)) throw error
+      skip() // Hosts without an enforcing backend retain the recording-sandbox coverage above.
+      return
+    }
+    const marker = join(b.repo, 'helper-ran')
+    await writeFile(join(b.root, 'helper.cjs'), `const fs = require('node:fs'); fs.writeFileSync(${JSON.stringify(marker)}, 'ran'); process.stdout.write(fs.readFileSync(0));\n`)
+    await writeFile(join(b.repo, '.gitattributes'), 'tracked.txt filter=demo -text\n')
+    await git(b.repo, 'config', 'filter.demo.clean', b.command)
+    await writeFile(join(b.repo, 'tracked.txt'), 'changed\n')
+    await git(b.repo, 'diff')
+    expect(await readFile(marker, 'utf8')).toBe('ran')
+    await rm(marker)
+
+    await localDiff(b.ctx, CONFIG, b.session, b.repo, null, { kind: 'unstaged' }, b.signal)
+    await localChanges(b.ctx, CONFIG, b.session, b.inspection, null, b.signal)
+    await expect(access(marker)).rejects.toThrow()
+  })
+
+  it('keeps built-in newline normalization when clean filters are disabled', async () => {
+    const b = await setup()
+    await writeFile(join(b.repo, '.gitattributes'), 'tracked.txt text eol=lf filter=demo\n')
+    await git(b.repo, 'add', '.gitattributes')
+    await git(b.repo, 'commit', '-m', 'newline attributes')
+    await git(b.repo, 'config', 'filter.demo.clean', `${b.command} clean`)
+    await writeFile(join(b.repo, 'tracked.txt'), 'initial\r\n')
+
+    const diff = await localDiff(b.ctx, CONFIG, b.session, b.repo, null, { kind: 'unstaged' }, b.signal)
+    const changes = await localChanges(b.ctx, CONFIG, b.session, b.inspection, null, b.signal)
+    expect(diff.files).toEqual([])
+    expect(changes?.files.some(file => file.path === 'tracked.txt')).toBe(false)
+    await expect(access(b.marker)).rejects.toThrow()
+  })
+
+  it.each(['named', 'some.nested.driver', 'x=y', 'lfs'])('disables the required clean filter %s for patches and statistics without changing Git config or index', async (driver) => {
+    const b = await setup()
+    await writeFile(join(b.repo, '.gitattributes'), `tracked.txt filter=${driver} -text\n`)
+    await git(b.repo, 'config', `filter.${driver}.clean`, `${b.command} clean`)
+    await git(b.repo, 'config', `filter.${driver}.required`, 'true')
+    await git(b.repo, 'config', `filter.${driver}.unused`, 'preserved')
+    await writeFile(join(b.repo, 'tracked.txt'), 'changed\n')
+    await git(b.repo, 'diff', '--no-ext-diff', '--no-textconv')
+    expect(await readFile(b.marker, 'utf8')).toBe('ran')
+    await rm(b.marker)
+    const config = await readFile(join(b.repo, '.git', 'config'))
+    const index = await readFile(join(b.repo, '.git', 'index'))
+    const indexStat = await stat(join(b.repo, '.git', 'index'))
+
+    const diff = await localDiff(b.ctx, CONFIG, b.session, b.repo, b.fork, { kind: 'unstaged' }, b.signal)
+    const changes = await localChanges(b.ctx, CONFIG, b.session, b.inspection, null, b.signal)
+
+    expect(diff.files.find(file => file.path === 'tracked.txt')?.hunks.flatMap(hunk => hunk.lines)).toEqual(['-initial', '+changed'])
+    expect(changes?.files.find(file => file.path === 'tracked.txt')).toMatchObject({ additions: 1, deletions: 1 })
+    await expect(access(b.marker)).rejects.toThrow()
+    expect(await readFile(join(b.repo, '.git', 'config'))).toEqual(config)
+    expect(await readFile(join(b.repo, '.git', 'index'))).toEqual(index)
+    expect((await stat(join(b.repo, '.git', 'index'))).mtimeMs).toBe(indexStat.mtimeMs)
+  })
+
+  it('disables a required process filter that refuses ordinary diff', async () => {
+    const b = await setup()
+    await writeFile(join(b.repo, '.gitattributes'), 'tracked.txt filter=process-driver\n')
+    await git(b.repo, 'config', 'filter.process-driver.process', b.command)
+    await git(b.repo, 'config', 'filter.process-driver.required', 'true')
+    await writeFile(join(b.repo, 'tracked.txt'), 'changed\n')
+    await expect(git(b.repo, 'diff')).rejects.toThrow()
+    expect(await readFile(b.marker, 'utf8')).toBe('ran')
+    await rm(b.marker)
+
+    await localDiff(b.ctx, CONFIG, b.session, b.repo, b.fork, { kind: 'unstaged' }, b.signal)
+    await localChanges(b.ctx, CONFIG, b.session, b.inspection, null, b.signal)
+    await expect(access(b.marker)).rejects.toThrow()
+  })
+
+  it.each(['diff.external', 'diff.helper.textconv', 'core.fsmonitor'])('does not execute %s', async (key) => {
+    const b = await setup()
+    await writeFile(join(b.repo, '.gitattributes'), 'tracked.txt diff=helper\n')
+    await git(b.repo, 'config', key, b.command)
+    await writeFile(join(b.repo, 'tracked.txt'), 'changed\n')
+
+    await localDiff(b.ctx, CONFIG, b.session, b.repo, b.fork, { kind: 'unstaged' }, b.signal)
+    await localChanges(b.ctx, CONFIG, b.session, b.inspection, null, b.signal)
+    await expect(access(b.marker)).rejects.toThrow()
+  })
+
+  it('ignores dirty submodule files and helpers while retaining submodule commit changes', async () => {
+    const b = await setup()
+    const source = await repository(b.root, 'source')
+    await git(b.repo, '-c', 'protocol.file.allow=always', 'submodule', 'add', source, 'nested')
+    await git(b.repo, 'commit', '-m', 'submodule')
+    const nested = join(b.repo, 'nested')
+    await writeFile(join(nested, 'tracked.txt'), 'dirty\n')
+    await git(nested, 'config', 'core.fsmonitor', b.command)
+    await git(b.repo, 'config', 'diff.submodule', 'diff')
+    const clean = await localDiff(b.ctx, CONFIG, b.session, b.repo, null, { kind: 'unstaged' }, b.signal)
+    expect(clean.files).toEqual([])
+    await expect(access(b.marker)).rejects.toThrow()
+
+    await git(nested, 'config', '--unset', 'core.fsmonitor')
+    await git(nested, 'config', 'user.name', 'Forge fixture')
+    await git(nested, 'config', 'user.email', 'forge@example.invalid')
+    await git(nested, '-c', 'commit.gpgSign=false', 'commit', '-am', 'nested change')
+    await git(nested, 'config', 'core.fsmonitor', b.command)
+    const changed = await localDiff(b.ctx, CONFIG, b.session, b.repo, null, { kind: 'unstaged' }, b.signal)
+    expect(changed.files.map(file => file.path)).toEqual(['nested'])
+    expect(changed.files[0]?.hunks.flatMap(hunk => hunk.lines).join('\n')).toContain('Subproject commit')
+    await expect(access(b.marker)).rejects.toThrow()
+  })
+
+  it('refuses an incomplete filter listing before running a diff', async () => {
+    const b = await setup()
+    await git(b.repo, 'config', `filter.${'long'.repeat(200)}.clean`, b.command)
+    await writeFile(join(b.repo, '.gitattributes'), `tracked.txt filter=${'long'.repeat(200)}\n`)
+    await writeFile(join(b.repo, 'tracked.txt'), 'changed\n')
+    await expect(localDiff(b.ctx, { ...CONFIG, maxDiffBytes: 128 }, b.session, b.repo, null, { kind: 'unstaged' }, b.signal))
+      .rejects.toBeInstanceOf(FilterConfigError)
+    await expect(localChanges(b.ctx, { ...CONFIG, maxOutputBytes: 128 }, b.session, b.inspection, null, b.signal))
+      .rejects.toBeInstanceOf(FilterConfigError)
+    await expect(access(b.marker)).rejects.toThrow()
+  })
+
+  it('identifies a failed filter read before starting a comparison', async () => {
+    const b = await setup()
+    const failure = new Error('Git executable unavailable')
+    const resolve = vi.spyOn(b.ctx.subprocess, 'resolveExecutable').mockRejectedValue(failure)
+    const spawn = vi.spyOn(b.ctx.subprocess, 'spawn')
+    try {
+      await expect(localDiff(b.ctx, CONFIG, b.session, b.repo, null, { kind: 'unstaged' }, b.signal))
+        .rejects.toMatchObject({ name: 'FilterConfigError', cause: failure })
+      expect(spawn).not.toHaveBeenCalled()
+    } finally { resolve.mockRestore(); spawn.mockRestore() }
+  })
+
+  it('compares LFS pointers and materialized bytes without invoking LFS or downloading content', async () => {
+    const b = await setup()
+    const pointer = `version https://git-lfs.github.com/spec/v1\noid sha256:${'a'.repeat(64)}\nsize 4\n`
+    await writeFile(join(b.repo, 'asset.bin'), pointer)
+    await writeFile(join(b.repo, '.gitattributes'), 'asset.bin filter=lfs -text\n')
+    await git(b.repo, 'add', '.gitattributes', 'asset.bin')
+    await git(b.repo, 'commit', '-m', 'pointer')
+    await git(b.repo, 'config', 'filter.lfs.process', b.command)
+    await git(b.repo, 'config', 'filter.lfs.required', 'true')
+    await expect(localDiff(b.ctx, CONFIG, b.session, b.repo, null, { kind: 'unstaged' }, b.signal)).resolves.toMatchObject({ files: [] })
+    await writeFile(join(b.repo, 'asset.bin'), Uint8Array.from([0, 1, 2, 3]))
+    const diff = await localDiff(b.ctx, CONFIG, b.session, b.repo, null, { kind: 'unstaged' }, b.signal)
+    expect(diff.files).toMatchObject([{ path: 'asset.bin', binary: true, hunks: [] }])
+    await expect(access(b.marker)).rejects.toThrow()
+  })
+
+  it('shows raw materialized LFS text even when its configured conversion matches the stored pointer', async () => {
+    const b = await setup()
+    const content = 'materialized content\n'
+    const pointer = `version https://git-lfs.github.com/spec/v1\noid sha256:${createHash('sha256').update(content).digest('hex')}\nsize ${Buffer.byteLength(content)}\n`
+    await writeFile(join(b.repo, 'asset.txt'), pointer)
+    await writeFile(join(b.repo, '.gitattributes'), 'asset.txt filter=lfs -text\n')
+    await git(b.repo, 'add', '.gitattributes', 'asset.txt')
+    await git(b.repo, 'commit', '-m', 'pointer')
+    await writeFile(join(b.root, 'helper.cjs'), `const fs = require('node:fs'); fs.readFileSync(0); fs.writeFileSync(${JSON.stringify(b.marker)}, 'ran'); process.stdout.write(${JSON.stringify(pointer)});\n`)
+    await git(b.repo, 'config', 'filter.lfs.clean', b.command)
+    await git(b.repo, 'config', 'filter.lfs.required', 'true')
+    await writeFile(join(b.repo, 'asset.txt'), content)
+    expect(await git(b.repo, 'diff', '--numstat')).toBe('')
+    expect(await readFile(b.marker, 'utf8')).toBe('ran')
+    await rm(b.marker)
+
+    const diff = await localDiff(b.ctx, CONFIG, b.session, b.repo, null, { kind: 'unstaged' }, b.signal)
+    expect(diff.files).toMatchObject([{ path: 'asset.txt', additions: 1, deletions: 3 }])
+    await expect(access(b.marker)).rejects.toThrow()
+  })
+})
diff --git a/packages/experimental/client-ui-forge/tests/mount.client.spec.ts b/packages/experimental/client-ui-forge/tests/mount.client.spec.ts
index 957ed7fed8..fd410f486a 100644
--- a/packages/experimental/client-ui-forge/tests/mount.client.spec.ts
+++ b/packages/experimental/client-ui-forge/tests/mount.client.spec.ts
@@ -8,7 +8,8 @@ import { Context, Service } from '@deepseek-ai/cordis'
 import type { RemoteHostFacts } from '@deepseek-ai/dsh-api-remotes/client'
 import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
 import { SlotRegistry } from '@deepseek-ai/dsh-client-ui-renderer/client'
-import type { TabId } from '@deepseek-ai/dsh-client-ui-sidebar-right/client'
+import type { SidebarRightTabDefinition, TabId } from '@deepseek-ai/dsh-client-ui-sidebar-right/client'
+import type { ChangeRequestSnapshot, ForgeReviewRequest, ForgeReviewResult } from '@deepseek-ai/dsh-experimental-forge/types'
 import { SessionId } from '@deepseek-ai/dsh-session/types'
 import { RemoteError, type RemoteResult, type TypertRemoteContribution } from '@deepseek-ai/dsh-typert-protocol'
 import { afterEach, describe, expect, it, vi } from 'vitest'
@@ -25,6 +26,7 @@ import type { SessionListInjected } from '../src/client/session-list.ts'
 import { SessionHoverForge } from '../src/client/SessionHoverForge.tsx'
 import { SessionRowForge } from '../src/client/SessionRowForge.tsx'
 import type { NoticeSource } from '../src/client/source.ts'
+import type { ReviewSelection } from '../src/client/review.ts'
 import { WorktreeProgress, type WorktreeProgressInjected } from '../src/client/WorktreeProgress.tsx'
 import { WorktreeToggle, type WorktreeToggleInjected } from '../src/client/WorktreeToggle.tsx'
 import type {
@@ -40,6 +42,7 @@ const LOCAL: ForgeLocalDiff = { base: 'origin/main', files: [], omitted: 0 }
 const CHANGE: ForgeChangeRequestDiff = { headSha: 'a'.repeat(40), files: [], localAhead: null, fileUrls: {} }
 
 afterEach(() => {
+  localStorage.clear()
   vi.restoreAllMocks()
   Reflect.deleteProperty(navigator, 'clipboard')
 })
@@ -156,14 +159,18 @@ async function base() {
     localDiff: vi.fn(async (_sessionId: SessionId, _scope: ForgeLocalScope, _signal?: AbortSignal): Read<ForgeLocalDiff> =>
       ({ ok: true, value: LOCAL })),
     localText: vi.fn(async (_sessionId: SessionId, _scope: ForgeLocalScope, _path: string): Read<string> => ({ ok: true, value: 'a\n' })),
+    changeRequestChecks: vi.fn(async (
+      _sessionId: SessionId, _url: string, _headSha: string, _signal: AbortSignal,
+    ): Read<ChangeRequestSnapshot> => ({ ok: true, value: snapshot(7) })),
     changeRequestDiff: vi.fn(async (_sessionId: SessionId, _url: string, _signal?: AbortSignal): Read<ForgeChangeRequestDiff> =>
       ({ ok: true, value: CHANGE })),
     changeRequestText: vi.fn(async (_sessionId: SessionId, _url: string, _commit: string, _path: string): Read<string> => ({ ok: true, value: 'b\n' })),
+    submitReview: vi.fn(async (_sessionId: SessionId, _url: string, _request: ForgeReviewRequest): Read<ForgeReviewResult> => ({ ok: true, value: { ok: true, url: 'https://github.com/review' } })),
   }
   ctx.provide('remote.forgePanel', forgePanel)
   ctx.provide('locale', new LocaleRuntime(ctx))
   const unregisterTab = vi.fn()
-  const sidebarRightTabs = { register: vi.fn((_type: { id: string; kind: string; title: () => string }) => unregisterTab) }
+  const sidebarRightTabs = { register: vi.fn((_type: SidebarRightTabDefinition) => unregisterTab) }
   ctx.provide('sidebarRightTabs', sidebarRightTabs)
   const sidebarRight = { openTab: vi.fn(), toggleExpanded: vi.fn(), hide: vi.fn(),
     tabsIn: vi.fn(() => [{ id: 'forge-tab' as TabId, kind: TAB_KIND }]) }
@@ -251,6 +258,16 @@ async function fixture() {
 }
 
 describe('mountForgePanel registration', () => {
+  it('routes complete check reads through the bound Session and propagates failures', async () => {
+    const f = await fixture()
+    const signal = new AbortController().signal
+    const url = 'https://github.com/octo/demo/pull/7'
+    expect(await f.tab(S1).readChecks(url, 'a'.repeat(40), signal)).toEqual(snapshot(7))
+    expect(f.forgePanel.changeRequestChecks).toHaveBeenCalledWith(S1, url, 'a'.repeat(40), signal)
+    f.forgePanel.changeRequestChecks.mockResolvedValueOnce(REFUSED.failed)
+    await expect(f.tab(S1).readChecks(url, 'a'.repeat(40), signal)).rejects.toThrow()
+  })
+
   it('declares the browser services it needs', () => {
     expect(inject).toEqual(['remote', 'slots', 'locale', 'sidebarRightTabs', 'sidebarRight', 'sessions'])
   })
@@ -260,7 +277,10 @@ describe('mountForgePanel registration', () => {
     expect(f.sidebarRightTabs.register).toHaveBeenCalledTimes(2)
     const type = f.sidebarRightTabs.register.mock.calls[0]?.[0]
     expect(type).toMatchObject({ id: TAB_ID, kind: TAB_KIND })
-    expect([en['tab.title'], zh['tab.title']]).toContain(type?.title())
+    expect([en['tab.title'], zh['tab.title']]).toContain(type?.title('sidebar://forge-panel'))
+    expect(type?.guide).toHaveLength(1)
+    expect([en['guide.title'], zh['guide.title']]).toContain(type?.guide?.[0]?.title())
+    expect([en['guide.description'], zh['guide.description']]).toContain(type?.guide?.[0]?.description?.())
     expect(f.sidebarRightTabs.register.mock.calls[1]?.[0]).toMatchObject({ id: CHANGES_ID, kind: CHANGES_KIND })
     expect(f.entry('sidebar.right.pane.tab', ForgeTab)).toMatchObject({ options: { key: TAB_ID }, locale: NS })
     expect(f.entry('sidebar.right.pane.tab.title', ForgeTabTitle)).toMatchObject({ options: { key: TAB_ID }, locale: NS })
@@ -688,6 +708,77 @@ describe('mountForgePanel worktree card actions', () => {
 })
 
 describe('mountForgePanel changes view', () => {
+  it('inserts numbered frozen quotes in the originating Session without sending a message', async () => {
+    const f = await fixture()
+    try {
+      const selection: ReviewSelection = { source: { kind: 'local', scope: 'branch' }, comment: { path: 'a.ts', side: 'R', startLine: 1, endLine: 1, body: 'Check this', hunk: '@@ -1 +1 @@\n-old\n+new' } }
+      const scope = f.sessions.scope(S1)!
+      let draft = ''
+      const focus = vi.fn(), send = vi.fn()
+      const insertQuote = vi.fn((text: string) => { draft += `\n> ${text}`; return true })
+      const input = { state: { getSnapshot: () => ({ draft }) }, insertQuote, focus }
+      const resolve = vi.fn(() => input)
+      // Only the input methods used by this contribution are supplied by the Session fixture.
+      vi.spyOn(scope, 'get').mockImplementation(name => name === 'conversation' ? { input: { for: resolve }, send } as never : undefined)
+      const view = f.changes(S1)
+      expect(view.addReviewToInput(selection)).toBe(true)
+      expect(view.addReviewToInput(selection)).toBe(true)
+      expect(insertQuote.mock.calls.map(([text]) => text.split('\n')[0])).toEqual(['## User Comment 1', '## User Comment 2'])
+      expect(resolve).toHaveBeenCalledWith(scope)
+      expect(focus).toHaveBeenCalledTimes(2)
+      insertQuote.mockReturnValueOnce(false)
+      expect(view.addReviewToInput(selection)).toBe(false)
+      expect(focus).toHaveBeenCalledTimes(2)
+      expect(send).not.toHaveBeenCalled()
+      const request: ForgeReviewRequest = { kind: 'review', headSha: 'a', event: 'comment', body: 'Summary', comments: [] }
+      expect(await view.submitReview('https://github.com/pr', request)).toMatchObject({ ok: true, value: { ok: true } })
+      expect(f.forgePanel.submitReview).toHaveBeenCalledWith(S1, 'https://github.com/pr', request)
+    } finally { await f.dispose() }
+  })
+  it.each(['no scope', 'no conversation'] as const)('refuses a quote with %s', async (missing) => {
+    const f = await fixture()
+    try {
+      const view = f.changes(S1)
+      if (missing === 'no scope') f.sessions.scope.mockReturnValue(undefined)
+      expect(view.addReviewToInput({ source: { kind: 'local', scope: 'branch' }, comment: { path: 'a', side: 'L', startLine: 1, endLine: 1, body: 'Comment', hunk: '' } })).toBe(false)
+    } finally { await f.dispose() }
+  })
+  it('immediately closes an already-aborted occurrence and reports failed removal', async () => {
+    const f = await fixture()
+    try {
+      const lifetime = new AbortController()
+      lifetime.abort()
+      vi.spyOn(Storage.prototype, 'removeItem').mockImplementationOnce(() => { throw new Error('storage denied') })
+      expect(f.changes(S1).reviewQueue({ id: 'closed' as TabId, signal: lifetime.signal }).getSnapshot().comments).toEqual([])
+      expect(f.notice()).toMatchObject({ key: 'review.saveFailed' })
+    } finally { await f.dispose() }
+  })
+  it.each(['local', 'change'] as const)('retains %s records across Session switches and clears only the closed tab', async (kind) => {
+    const f = await fixture()
+    const lifetime = new AbortController()
+    const tab = { id: 'review-tab' as TabId, signal: lifetime.signal }
+    const selection: ReviewSelection = { source: kind === 'local' ? { kind, scope: 'branch' }
+      : { kind, url: 'https://github.com/octo/demo/pull/7', headSha: 'a'.repeat(40) },
+    comment: { path: 'a.ts', side: 'R', startLine: 1, endLine: 1, body: 'Check this', hunk: '@@ -1 +1 @@\n-old\n+new' } }
+    const queue = f.changes(S1).reviewQueue(tab)
+    queue.recordAgent(selection)
+    if (kind === 'change') queue.add(selection)
+    queue.summarize('Summary', 'comment')
+    const otherTab = { id: 'other-tab' as TabId, signal: new AbortController().signal }
+    const other = f.changes(S1).reviewQueue(otherTab)
+    other.recordAgent(selection)
+    expect(f.changes(S2).reviewQueue({ id: tab.id, signal: new AbortController().signal }).getSnapshot().records).toEqual([])
+    expect(f.changes(S1).reviewQueue(tab)).toBe(queue)
+    expect(queue.getSnapshot().records).toHaveLength(1)
+    lifetime.abort()
+    expect(queue.getSnapshot()).toMatchObject({ comments: [], records: [], body: '', uncertain: null })
+    expect(other.getSnapshot().records).toHaveLength(1)
+    const reopened = f.changes(S1).reviewQueue({ id: tab.id, signal: new AbortController().signal })
+    expect(reopened).not.toBe(queue)
+    expect(reopened.getSnapshot()).toMatchObject({ comments: [], records: [], body: '' })
+    expect(queue.recordAgent(selection)).toBe(false)
+    await f.dispose()
+  })
   it('reads the changes of the Session through the Remote and shares its panel stream', async () => {
     const f = await fixture()
     const view = f.changes(S1)
@@ -717,6 +808,11 @@ describe('mountForgePanel changes view', () => {
     f.changes(S1).report('toast.expandFailed', { message: 'gone' })
     expect(f.notice()).toMatchObject({ key: 'toast.expandFailed', tone: 'failure', params: { message: 'gone' } })
 
+    f.changes(S1).report('review.submitted')
+    expect(f.notice()).toMatchObject({ key: 'review.submitted', tone: 'success' })
+    f.changes(S1).report('review.published')
+    expect(f.notice()).toMatchObject({ key: 'review.published', tone: 'success' })
+
     const writeText = vi.fn(async (_text: string) => {})
     Object.defineProperty(navigator, 'clipboard', { configurable: true, value: { writeText } })
     f.changes(S1).copyPath('src/a.ts')
diff --git a/packages/experimental/client-ui-forge/tests/review.client.spec.tsx b/packages/experimental/client-ui-forge/tests/review.client.spec.tsx
new file mode 100644
index 0000000000..cf22f225c3
--- /dev/null
+++ b/packages/experimental/client-ui-forge/tests/review.client.spec.tsx
@@ -0,0 +1,336 @@
+// @vitest-environment jsdom
+/** Frozen line references, durable pending reviews, and plain-text destination actions. */
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Profiler } from 'react'
+import { act, cleanup, fireEvent, render, within } from '@testing-library/react'
+import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import type { ForgeDiffFile } from '../src/types.ts'
+import { formatReviewComment, selectReviewLines, reviewMatches, type ReviewSelection } from '../src/client/review.ts'
+import { ReviewQueue } from '../src/client/review-queue.ts'
+import { ReviewThread } from '../src/client/ReviewThread.tsx'
+import { SubmitReview } from '../src/client/SubmitReview.tsx'
+import { ReviewComposer } from '../src/client/ReviewComposer.tsx'
+import { en } from '../src/client/locales.ts'
+
+const t = makeTranslate(en)
+const file: ForgeDiffFile = { path: 'a.ts', previousPath: null, status: 'modified', binary: false, oversized: false, untracked: false, additions: 3, deletions: 2,
+  hunks: [
+    { oldStart: 2, oldLines: 2, newStart: 2, newLines: 3, lines: [' unchanged', '-old', '+new', '+another'] },
+    { oldStart: 10, oldLines: 1, newStart: 11, newLines: 1, lines: ['-last', '+final'] },
+  ] }
+
+const selection: ReviewSelection = { source: { kind: 'change', url: 'https://github.com/octo/demo/pull/7', headSha: 'a'.repeat(40) },
+  comment: { ...selectReviewLines(file, 'R', 3, 4)!, body: '为什么新增这两行？' } }
+afterEach(() => { cleanup(); localStorage.clear(); vi.restoreAllMocks() })
+
+describe('review references', () => {
+  it('anchors added and deleted files and detects changed source or hunk content', () => {
+    const added = { ...file, hunks: [{ oldStart: 1, oldLines: 0, newStart: 1, newLines: 1, lines: ['+new'] }] }
+    const deleted = { ...file, hunks: [{ oldStart: 1, oldLines: 1, newStart: 1, newLines: 0, lines: ['-old'] }] }
+    expect(selectReviewLines(added, 'R', 1, 1)?.hunk).toContain('@@ -0,0 +1,1 @@')
+    expect(selectReviewLines(deleted, 'L', 1, 1)?.hunk).toContain('@@ -1,1 +0,0 @@')
+    expect(reviewMatches(selection, { kind: 'local', scope: 'branch' }, file)).toBe(false)
+    expect(reviewMatches(selection, { kind: 'change', url: 'x', headSha: 'b' }, file)).toBe(false)
+    expect(reviewMatches(selection, selection.source, added)).toBe(false)
+    expect(reviewMatches(selection, selection.source, file)).toBe(true)
+  })
+  it('keeps a failed draft editable and lets the user queue it without publishing', () => {
+    const queue = vi.fn().mockReturnValue(false), close = vi.fn(), onQuoted = vi.fn()
+    const actions = { source: selection.source, addToInput: () => true, queue, reviewStarted: true, onQuoted }
+    const view = render(<ReviewComposer selection={selection} actions={actions} close={close} t={t} />)
+    fireEvent.click(view.getByRole('button', { name: 'Add to review' }))
+    expect(view.getByRole('alert')).toHaveProperty('textContent', en['review.saveFailed'])
+    fireEvent.change(view.getByRole('textbox'), { target: { value: 'Updated' } })
+    expect(view.queryByRole('alert')).toBeNull()
+    queue.mockReturnValue(true)
+    fireEvent.click(view.getByRole('button', { name: 'Add to review' }))
+    expect(close).toHaveBeenCalledOnce()
+    fireEvent.click(view.getByRole('button', { name: 'Add to input' }))
+    expect(onQuoted).toHaveBeenCalledWith({ ...selection, comment: { ...selection.comment, body: 'Updated' } })
+  })
+  it('contains unexpected publication failures and prevents a second write while one is pending', async () => {
+    let reject: (error: Error) => void = () => {}
+    const publish = vi.fn(() => new Promise<string | undefined>((_resolve, fail) => { reject = fail }))
+    const view = render(<ReviewComposer selection={selection}
+      actions={{ source: selection.source, addToInput: () => true, queue: () => true, publish }} close={vi.fn()} t={t} />)
+    fireEvent.click(view.getByRole('button', { name: 'GitHub comment options' }))
+    fireEvent.click(view.getByRole('menuitem', { name: 'Publish single comment' }))
+    expect(view.getByRole('button', { name: en['review.publishing'] })).toHaveProperty('disabled', true)
+    expect(view.getByRole('textbox')).toHaveProperty('disabled', true)
+    await act(async () => { reject(new Error('transport lost')) })
+    expect(view.getByRole('alert')).toHaveProperty('textContent', en['review.unknown'])
+    expect(publish).toHaveBeenCalledOnce()
+  })
+  it('dispatches at most once when two activations arrive in the same render batch', async () => {
+    let finish: (value: undefined) => void = () => {}
+    const publish = vi.fn(() => new Promise<undefined>((resolve) => { finish = resolve }))
+    const view = render(<ReviewComposer selection={selection} actions={{ source: selection.source, addToInput: () => true, publish }}
+      close={vi.fn()} t={t} />)
+    const button = view.getByRole('button', { name: 'Publish single comment' })
+    act(() => { button.click(); button.click() })
+    expect(publish).toHaveBeenCalledOnce()
+    await act(async () => { finish(undefined) })
+  })
+  it('keeps native draft edits through rerenders and updates React only when action availability changes', () => {
+    const commits = vi.fn()
+    const addToInput = vi.fn().mockReturnValue(true)
+    const actions = { source: selection.source, addToInput }
+    const empty = { ...selection, comment: { ...selection.comment, body: '' } }
+    const close = vi.fn()
+    const view = render(<Profiler id="comment" onRender={commits}>
+      <ReviewComposer selection={empty} actions={actions} close={close} t={t} />
+    </Profiler>)
+    const input = view.getByRole('textbox')
+    const send = view.getByRole('button', { name: 'Add to input' })
+    expect(send).toHaveProperty('disabled', true)
+    fireEvent.change(input, { target: { value: '先检查' } })
+    expect(send).toHaveProperty('disabled', false)
+    commits.mockClear()
+    for (const value of ['先检查边界', '先检查边界\n再补测试', '先检查边界\n再补测试。']) fireEvent.change(input, { target: { value } })
+    expect(commits).not.toHaveBeenCalled()
+    view.rerender(<Profiler id="comment" onRender={commits}>
+      <ReviewComposer selection={empty} actions={{ ...actions }} close={close} t={t} />
+    </Profiler>)
+    expect(input).toHaveProperty('value', '先检查边界\n再补测试。')
+    fireEvent.change(input, { target: { value: ' \n' } })
+    expect(send).toHaveProperty('disabled', true)
+    fireEvent.change(input, { target: { value: '已修改的内容' } })
+    fireEvent.click(send)
+    expect(addToInput).toHaveBeenCalledWith({ ...selection, comment: { ...selection.comment, body: '已修改的内容' } })
+  })
+  it('keeps sides, reversed ranges, and the complete hunk while refusing gaps and cross-hunk selection', () => {
+    expect(selectReviewLines(file, 'R', 4, 3)).toEqual({ ...selection.comment, body: '' })
+    expect(selectReviewLines(file, 'L', 3, 3)?.hunk).toContain('-old\n+new')
+    expect(selectReviewLines(file, 'L', 4, 4)).toBeUndefined()
+    expect(selectReviewLines(file, 'R', 4, 11)).toBeUndefined()
+    expect(formatReviewComment(selection, 1)).toBe(`## User Comment 1\nFile: a.ts\nSide: R\nLines: 3-4\nSource: https://github.com/octo/demo/pull/7\nCommit: ${'a'.repeat(40)}\nDiff hunk:\n\`\`\`diff\n@@ -2,2 +2,3 @@\n unchanged\n-old\n+new\n+another\n\`\`\`\nComment:\n为什么新增这两行？`)
+    expect(formatReviewComment({ source: { kind: 'local', scope: 'staged' }, comment: { ...selection.comment, startLine: 4, hunk: '```' } }, 2))
+      .toContain('Lines: 4\nSource: Local (staged)\nDiff hunk:\n````diff\n```\n````')
+  })
+  it('adds a quote without posting or closing when the input refuses it', () => {
+    const addToInput = vi.fn<(selection: ReviewSelection) => boolean>().mockReturnValue(false)
+    const close = vi.fn()
+    const view = render(<ReviewComposer selection={selection} actions={{ source: selection.source, addToInput }} close={close} t={t} />)
+    fireEvent.click(view.getByRole('button', { name: 'Add to input' }))
+    expect(addToInput).toHaveBeenCalledWith(selection)
+    expect(close).not.toHaveBeenCalled()
+    expect(view.getByRole('alert').textContent).toContain('cannot accept')
+    expect(view.queryByRole('button', { name: 'Publish single comment' })).toBeNull()
+    addToInput.mockReturnValue(true)
+    fireEvent.click(view.getByRole('button', { name: 'Add to input' }))
+    expect(close).toHaveBeenCalledTimes(1)
+  })
+  it('keeps the single-comment publish action inside the GitHub split menu', async () => {
+    const publish = vi.fn().mockResolvedValue(undefined)
+    const queue = vi.fn().mockReturnValue(true)
+    const close = vi.fn()
+    const view = render(<ReviewComposer selection={selection}
+      actions={{ source: selection.source, addToInput: () => true, publish, queue }} close={close} t={t} />)
+    expect(view.getByRole('button', { name: 'Start review' })).toBeTruthy()
+    expect(view.queryByRole('button', { name: 'Publish single comment' })).toBeNull()
+    fireEvent.click(view.getByRole('button', { name: 'GitHub comment options' }))
+    fireEvent.keyDown(document, { key: 'Escape' })
+    expect(view.queryByRole('menu')).toBeNull()
+    expect(publish).not.toHaveBeenCalled()
+    fireEvent.click(view.getByRole('button', { name: 'GitHub comment options' }))
+    fireEvent.click(within(view.getByRole('menu')).getByRole('menuitem', { name: 'Publish single comment' }))
+    await vi.waitFor(() => { expect(close).toHaveBeenCalledOnce() })
+    expect(publish).toHaveBeenCalledWith(selection)
+    expect(queue).not.toHaveBeenCalled()
+  })
+  it('keeps the comment text when GitHub refuses publication', async () => {
+    const close = vi.fn()
+    const publish = vi.fn().mockResolvedValue('Permission denied')
+    const view = render(<ReviewComposer selection={selection}
+      actions={{ source: selection.source, addToInput: () => true, publish }} close={close} t={t} />)
+    fireEvent.click(view.getByRole('button', { name: 'Publish single comment' }))
+    expect(await view.findByRole('alert')).toHaveProperty('textContent', 'Permission denied')
+    expect(view.getByRole('textbox')).toHaveProperty('value', selection.comment.body)
+    expect(close).not.toHaveBeenCalled()
+  })
+})
+
+describe('pending reviews', () => {
+  it('edits only the chosen occurrence and refuses edits after publication or during dispatch', () => {
+    const queue = new ReviewQueue('review-test')
+    expect(queue.add({ ...selection, source: { kind: 'local', scope: 'branch' } })).toBe(false)
+    queue.add(selection)
+    queue.add({ ...selection, comment: { ...selection.comment, body: 'Second' } })
+    const first = queue.fileComments('a.ts', selection.source).threads[0]!
+    queue.editThread(first.key, null)
+    expect(queue.getSnapshot().comments.map(item => item.comment.body)).toEqual(['Second'])
+    expect(queue.editThread(first.key, 'Missing')).toBe(false)
+    queue.begin({ kind: 'comment', headSha: 'a', comment: selection.comment })
+    expect(queue.summarize('While pending', 'approve')).toBe(false)
+    expect(queue.fileComments('a.ts', selection.source).locked).toBe(true)
+    queue.finish(false)
+    queue.published(selection, 'https://github.com/octo/demo/pull/7#comment-1')
+    expect(queue.fileComments('a.ts', selection.source).threads[0]?.kind).toBe('published')
+  })
+  it('clears every record on close and rejects a publication receipt arriving afterwards', () => {
+    const queue = new ReviewQueue('review-test')
+    queue.add(selection)
+    queue.recordAgent(selection)
+    queue.summarize('Summary', 'request-changes')
+    queue.begin({ kind: 'comment', headSha: 'a'.repeat(40), comment: selection.comment })
+    expect(queue.close()).toBe(true)
+    expect(localStorage.getItem('review-test')).toBeNull()
+    expect(queue.published(selection, 'https://github.com/octo/demo/pull/7#comment-1')).toBe(false)
+    expect(queue.finish(true)).toBe(false)
+    expect(queue.recordAgent(selection)).toBe(false)
+    expect(new ReviewQueue('review-test').getSnapshot()).toMatchObject({ comments: [], records: [], body: '', uncertain: null })
+  })
+  it('closes in memory and reports a storage removal failure', () => {
+    const queue = new ReviewQueue('review-test')
+    queue.add(selection)
+    vi.spyOn(Storage.prototype, 'removeItem').mockImplementationOnce(() => { throw new DOMException('Denied', 'SecurityError') })
+    expect(queue.close()).toBe(false)
+    expect(queue.getSnapshot().comments).toEqual([])
+    expect(queue.add(selection)).toBe(false)
+  })
+  it('restores frozen comments and summary, persisting uncertainty before dispatch', () => {
+    const queue = new ReviewQueue('review-test')
+    const listener = vi.fn()
+    const release = queue.subscribe(listener)
+    expect(queue.add(selection)).toBe(true)
+    queue.summarize('Check the logic', 'request-changes')
+    const write = { kind: 'review' as const, headSha: 'a'.repeat(40), event: 'request-changes' as const, body: 'Check the logic', comments: [{ path: selection.comment.path, side: selection.comment.side, startLine: selection.comment.startLine, endLine: selection.comment.endLine, body: selection.comment.body }] }
+    expect(queue.begin(write)).toBe(true)
+    expect(new ReviewQueue('review-test').getSnapshot()).toMatchObject({ comments: [selection], uncertain: write })
+    expect(queue.begin(write)).toBe(false)
+    expect(queue.add(selection)).toBe(false)
+    expect(queue.edit(0, 'different')).toBe(false)
+    queue.finish(false)
+    queue.edit(0, 'updated')
+    expect(queue.getSnapshot().comments[0]?.comment.body).toBe('updated')
+    queue.finish(true)
+    expect(new ReviewQueue('review-test').getSnapshot().comments).toEqual([])
+    release()
+    expect(listener).toHaveBeenCalled()
+  })
+  it('restores old drafts and keeps inline identities through editing and publication', () => {
+    localStorage.setItem('review-test', JSON.stringify({ comments: [selection], body: '', event: 'comment', uncertain: null }))
+    const queue = new ReviewQueue('review-test')
+    const first = queue.fileComments('a.ts', selection.source)
+    expect(first.threads).toHaveLength(1)
+    expect(queue.fileComments('unrelated.ts', selection.source).threads).toHaveLength(0)
+    queue.summarize('Summary', 'comment')
+    expect(queue.fileComments('a.ts', selection.source)).toBe(first)
+    const key = first.threads[0]!.key
+    expect(queue.editThread(key, 'Updated')).toBe(true)
+    const edited = queue.fileComments('a.ts', selection.source)
+    expect(edited.threads[0]).toMatchObject({ key, kind: 'pending', selection: { comment: { body: 'Updated' } } })
+    queue.finish(true, 'https://github.com/octo/demo/pull/7#review-1')
+    expect(queue.fileComments('a.ts', selection.source).threads[0]).toMatchObject({ key, kind: 'published' })
+    expect(new ReviewQueue('review-test').fileComments('a.ts', selection.source).threads[0]).toMatchObject({ kind: 'published' })
+    const local = { ...selection, source: { kind: 'local' as const, scope: 'staged' } }
+    expect(queue.recordAgent(local)).toBe(true)
+    expect(queue.fileComments('a.ts', local.source).threads).toHaveLength(1)
+    expect(queue.fileComments('a.ts', { kind: 'local', scope: 'branch' }).threads).toHaveLength(0)
+  })
+  it('preserves malformed stored bytes and refuses to overwrite them', () => {
+    localStorage.setItem('review-test', 'broken')
+    const queue = new ReviewQueue('review-test')
+    expect(queue.getSnapshot().error).toBe('load')
+    expect(queue.add(selection)).toBe(false)
+    expect(localStorage.getItem('review-test')).toBe('broken')
+  })
+  it('keeps the previous queue on quota failure and allows retry after recovery', () => {
+    const queue = new ReviewQueue('review-test')
+    const setter = vi.spyOn(Storage.prototype, 'setItem').mockImplementationOnce(() => { throw new DOMException('quota', 'QuotaExceededError') })
+    expect(queue.add(selection)).toBe(false)
+    expect(queue.getSnapshot()).toMatchObject({ error: 'save', comments: [] })
+    setter.mockRestore()
+    expect(queue.add(selection)).toBe(true)
+    expect(queue.getSnapshot().error).toBeNull()
+  })
+})
+
+describe('inline records', () => {
+  it('keeps pending edits at their code location and quotes the edited text', () => {
+    const records = new ReviewQueue('review-test')
+    records.add(selection)
+    const thread = records.fileComments('a.ts', selection.source).threads[0]!
+    const addToInput = vi.fn().mockReturnValue(false)
+    const actions = { records, source: selection.source, addToInput }
+    const view = render(<ReviewThread thread={thread} actions={actions} locked={false} outdated={false} split t={t} />)
+    fireEvent.click(view.getByRole('button', { name: 'Add to input' }))
+    expect(view.getByRole('alert')).toHaveProperty('textContent', en['review.inputFailed'])
+    fireEvent.click(view.getByRole('button', { name: 'Edit' }))
+    fireEvent.change(view.getByRole('textbox'), { target: { value: 'Edited' } })
+    expect(view.queryByRole('alert')).toBeNull()
+    addToInput.mockReturnValue(true)
+    fireEvent.click(view.getByRole('button', { name: 'Add to input' }))
+    expect(addToInput).toHaveBeenLastCalledWith({ ...selection, comment: { ...selection.comment, body: 'Edited' } })
+    fireEvent.click(view.getByRole('button', { name: 'Done' }))
+    expect(view.queryByRole('textbox')).toBeNull()
+    fireEvent.click(view.getByRole('button', { name: 'Delete' }))
+    expect(records.getSnapshot().comments).toEqual([])
+  })
+  it('preserves unsaved edits and reports failed editing, finishing, and deletion', () => {
+    const records = new ReviewQueue('review-test')
+    records.add(selection)
+    const thread = records.fileComments('a.ts', selection.source).threads[0]!
+    const view = render(<ReviewThread thread={thread} actions={{ source: selection.source, addToInput: () => true, records }}
+      locked={false} outdated split={false} t={t} />)
+    fireEvent.click(view.getByRole('button', { name: 'Edit' }))
+    records.close()
+    fireEvent.change(view.getByRole('textbox'), { target: { value: 'Not saved' } })
+    expect(view.getByRole('alert')).toHaveProperty('textContent', en['review.saveFailed'])
+    fireEvent.click(view.getByRole('button', { name: 'Done' }))
+    expect(view.getByRole('textbox')).toHaveProperty('value', 'Not saved')
+    fireEvent.click(view.getByRole('button', { name: 'Delete' }))
+    expect(view.getByRole('alert')).toBeTruthy()
+  })
+  it('opens a published receipt and omits editing on immutable records', () => {
+    const openLink = vi.fn()
+    const view = render(<ReviewThread thread={{ key: 1, kind: 'published', selection, url: 'https://github.com/review' }}
+      actions={{ source: selection.source, addToInput: () => true, openLink }} locked={false} outdated={false} split={false} t={t} />)
+    fireEvent.click(view.getByRole('button', { name: en['review.recheck'] }))
+    expect(openLink).toHaveBeenCalledWith('https://github.com/review')
+    expect(view.queryByRole('button', { name: 'Edit' })).toBeNull()
+  })
+})
+
+describe('submission availability', () => {
+  it('explains why requesting changes needs a summary and enables submission when one is entered', () => {
+    const queue = new ReviewQueue('review-test')
+    const view = render(<SubmitReview queue={queue} url="https://github.com/octo/demo/pull/7" headSha={'a'.repeat(40)} busy={false} error={null}
+      submit={vi.fn()} close={vi.fn()} check={vi.fn()} reconcile={vi.fn()} t={t} />)
+    const button = view.getByRole('button', { name: 'Submit review' })
+    const summary = view.getByRole('textbox')
+    const announcement = view.getByRole('status')
+    expect(announcement.textContent).toBe('')
+    fireEvent.click(view.getByRole('radio', { name: 'Request changes' }))
+    expect(button).toHaveProperty('disabled', true)
+    expect(summary).toHaveProperty('required', true)
+    expect(announcement.textContent).toBe(en['review.summaryRequired'])
+    expect(view.getByText(en['review.summaryRequired']).id).toBe(summary.getAttribute('aria-describedby'))
+    fireEvent.change(summary, { target: { value: '  ' } })
+    expect(button).toHaveProperty('disabled', true)
+    fireEvent.change(summary, { target: { value: 'Please fix the missing check.' } })
+    expect(button).toHaveProperty('disabled', false)
+    fireEvent.change(summary, { target: { value: '' } })
+    fireEvent.click(view.getByRole('radio', { name: 'Approve' }))
+    expect(button).toHaveProperty('disabled', false)
+    expect(summary).toHaveProperty('required', false)
+    expect(announcement.textContent).toBe('')
+    expect(view.getByRole('status')).toBe(announcement)
+  })
+
+  it.each(['local', 'different-pr', 'different-head', 'empty-comment', 'load', 'save'] as const)('blocks %s and retains the review in the modal', (kind) => {
+    if (kind === 'load') localStorage.setItem('review-test', 'invalid')
+    const queue = new ReviewQueue('review-test')
+    const source = kind === 'different-pr' ? { kind: 'change' as const, url: 'other', headSha: 'a'.repeat(40) }
+      : kind === 'different-head' ? { kind: 'change' as const, url: 'https://github.com/octo/demo/pull/7', headSha: 'b' } : selection.source
+    if (kind !== 'load') queue.add({ ...selection, source, comment: { ...selection.comment, body: kind === 'empty-comment' ? '' : 'Text' } })
+    if (kind === 'save') {
+      vi.spyOn(Storage.prototype, 'setItem').mockImplementation(() => { throw new Error('quota') })
+      queue.summarize('Summary', 'comment')
+    }
+    if (kind === 'local') vi.spyOn(queue, 'getSnapshot').mockReturnValue({ ...queue.getSnapshot(), comments: [{ ...selection, source: { kind: 'local', scope: 'branch' } }] })
+    const view = render(<SubmitReview queue={queue} url="https://github.com/octo/demo/pull/7" headSha={'a'.repeat(40)} busy={false} error={null}
+      submit={vi.fn()} close={vi.fn()} check={vi.fn()} reconcile={vi.fn()} t={t} />)
+    expect(view.getByRole('button', { name: 'Submit review' })).toHaveProperty('disabled', true)
+  })
+})
diff --git a/packages/experimental/client-ui-forge/tests/states-remote.host.spec.ts b/packages/experimental/client-ui-forge/tests/states-remote.host.spec.ts
index 48bd5e2920..c30a76d122 100644
--- a/packages/experimental/client-ui-forge/tests/states-remote.host.spec.ts
+++ b/packages/experimental/client-ui-forge/tests/states-remote.host.spec.ts
@@ -3,9 +3,11 @@ import { mkdtemp, rm } from 'node:fs/promises'
 import { tmpdir } from 'node:os'
 import { join } from 'node:path'
 import { afterEach, describe, expect, it, vi } from 'vitest'
-import type { Context } from '@deepseek-ai/cordis'
+import { Context } from '@deepseek-ai/cordis'
 import type { SessionHeader } from '@deepseek-ai/dsh-session'
 import { SessionId } from '@deepseek-ai/dsh-session/types'
+import { DomainFacility } from '@deepseek-ai/dsh-storage-domain'
+import { MemoryMediaPool, MemoryStorageBackend } from '../../../storage/storage-domain/tests/helpers/memory-backend.ts'
 import { storedKey, type StoredStates } from '../src/states.ts'
 import type { ForgeChangeRequestListState, ForgeChangeRequestStatesFrame } from '../src/types.ts'
 import { bench, pullUrl, type Bench } from './harness.ts'
@@ -31,7 +33,7 @@ function state(number: number): ForgeChangeRequestListState {
 }
 
 /** A panel Remote with one loaded Session, the Sessions the Host lists, their cached summaries, and stored states. */
-async function composed(options: { readonly remoteAccess?: (id: SessionId) => boolean } = {}) {
+async function composed(options: { readonly remoteAccess?: (id: SessionId) => boolean; readonly storage?: DomainFacility } = {}) {
   const cwd = await mkdtemp(join(tmpdir(), 'forge-states-'))
   cleanups.push(() => rm(cwd, { recursive: true, force: true }))
   const b = await bench(cwd)
@@ -56,7 +58,7 @@ async function composed(options: { readonly remoteAccess?: (id: SessionId) => bo
       }
       : undefined,
   })
-  provide(b.ctx, 'storageDomain', { open: async () => ({ table: () => table }) })
+  provide(b.ctx, 'storageDomain', options.storage ?? { open: async () => ({ table: () => table, close: async () => {} }) })
   if (options.remoteAccess !== undefined) {
     const allows = options.remoteAccess
     provide(b.ctx, 'remoteAccess', { allows: ({ id }: { readonly id: SessionId }) => allows(id) })
@@ -80,6 +82,10 @@ function reader(b: Bench) {
   })
   return {
     frames,
+    async close(): Promise<void> {
+      aborter.abort()
+      await iterator.return?.(undefined)
+    },
     async until(
       predicate: (states: ReadonlyMap<string, ForgeChangeRequestListState>) => boolean,
     ): Promise<ReadonlyMap<string, ForgeChangeRequestListState>> {
@@ -97,6 +103,29 @@ function reader(b: Bench) {
 }
 
 describe('forgePanel.changeRequestStates', () => {
+  it('restores stored states when the last list subscriber leaves and another subscribes', async () => {
+    const storageContext = new Context()
+    const backend = new MemoryStorageBackend(new MemoryMediaPool())
+    provide(storageContext, 'storage', { backend: { get: () => backend } })
+    const storage = new DomainFacility(storageContext, { backend: 'memory', routes: {} })
+    cleanups.push(async () => { await storage.closeAll(); await storageContext.fiber.dispose() })
+    const { b } = await composed({ storage })
+    b.ctx.forgeSession.track(b.session, pullUrl(7))
+    const first = reader(b)
+    await first.until(states => states.has(pullUrl(7)))
+    await first.close()
+
+    const second = reader(b)
+    expect((await second.until(states => states.has(pullUrl(7)))).get(pullUrl(7))).toEqual(state(7))
+    expect(second.frames[0]?.states).toContainEqual(state(7))
+    await second.close()
+    expect(storage.get('forge_panel_change_requests')).toBeUndefined()
+
+    await reader(b).until(states => states.has(pullUrl(7)))
+    await b.ctx.fiber.dispose()
+    expect(storage.get('forge_panel_change_requests')).toBeUndefined()
+  })
+
   it('streams the states of the visible bindings of loaded and cached Sessions, then of later bindings', async () => {
     const { b, records } = await composed()
     b.ctx.forgeSession.track(b.session, pullUrl(7))
diff --git a/packages/experimental/client-ui-forge/tests/states.host.spec.ts b/packages/experimental/client-ui-forge/tests/states.host.spec.ts
index 18866bd805..602e42dfd9 100644
--- a/packages/experimental/client-ui-forge/tests/states.host.spec.ts
+++ b/packages/experimental/client-ui-forge/tests/states.host.spec.ts
@@ -49,6 +49,7 @@ function fixture(sessions: readonly ListedSession[], stored: readonly ForgeChang
   const put = vi.fn<StoredStates['put']>(async (key, value) => { records.set(key, value) })
   const remove = vi.fn<StoredStates['delete']>(async key => records.delete(key))
   const table: StoredStates = { get: key => records.get(key), entries: () => records.entries(), put, delete: remove }
+  const close = vi.fn(async () => {})
   const sources = {
     sessions: vi.fn<ChangeRequestStateSources['sessions']>(async () => sessions),
     onBindings: vi.fn<ChangeRequestStateSources['onBindings']>((listener) => {
@@ -63,7 +64,7 @@ function fixture(sessions: readonly ListedSession[], stored: readonly ForgeChang
       watchers.set(target.number, listener)
       return () => { watchers.delete(target.number) }
     }),
-    open: vi.fn<ChangeRequestStateSources['open']>(async () => table),
+    open: vi.fn<ChangeRequestStateSources['open']>(async () => ({ table, close })),
     report: vi.fn<ChangeRequestStateSources['report']>(),
   }
   const hub = new ChangeRequestStates(sources)
@@ -73,6 +74,7 @@ function fixture(sessions: readonly ListedSession[], stored: readonly ForgeChang
     sources,
     records,
     put,
+    close,
     remove,
     watchers,
     listeners,
@@ -186,6 +188,7 @@ describe('ChangeRequestStates', () => {
     await second.close()
     expect([...f.watchers.keys()]).toEqual([])
     expect(f.listeners.size).toBe(0)
+    expect(f.close).toHaveBeenCalledOnce()
     const third = reader(f.hub)
     expect(await third.next()).toEqual({ type: 'baseline', states: [] })
     expect(f.sources.sessions).toHaveBeenCalledTimes(2)
@@ -293,6 +296,7 @@ describe('ChangeRequestStates', () => {
       f.records.set(key, value)
       order.push('written')
     })
+    f.close.mockImplementationOnce(async () => { order.push('closed') })
     const r = reader(f.hub)
     await r.next()
     f.poll(7)
@@ -300,7 +304,8 @@ describe('ChangeRequestStates', () => {
     const disposing = f.hub.dispose().then(() => { order.push('disposed') })
     release.resolve(undefined)
     await disposing
-    expect(order).toEqual(['written', 'disposed'])
+    expect(order).toEqual(['written', 'closed', 'disposed'])
+    expect(f.close).toHaveBeenCalledOnce()
     expect(f.records.get(storedKey(url(7)))).toEqual(state(7))
     expect(await reader(f.hub).next()).toBeUndefined()
     expect(f.sources.open).toHaveBeenCalledTimes(1)
@@ -347,9 +352,60 @@ describe('ChangeRequestStates', () => {
     f.sources.sessions.mockRejectedValueOnce(new Error('list unavailable'))
     await expect(reader(f.hub).next()).rejects.toThrow('list unavailable')
     expect(f.listeners.size).toBe(0)
+    expect(f.close).toHaveBeenCalledOnce()
     expect(await reader(f.hub).next()).toEqual({ type: 'baseline', states: [] })
   })
 
+  it('closes storage that finishes opening after the run is cancelled', async () => {
+    const f = fixture([])
+    const entered = Promise.withResolvers<undefined>()
+    const release = Promise.withResolvers<undefined>()
+    const open = f.sources.open.getMockImplementation()!
+    f.sources.open.mockImplementationOnce(async () => {
+      entered.resolve(undefined)
+      await release.promise
+      return open()
+    })
+    const first = reader(f.hub).next()
+    await entered.promise
+    const disposing = f.hub.dispose()
+    release.resolve(undefined)
+
+    expect(await first).toBeUndefined()
+    await disposing
+    expect(f.close).toHaveBeenCalledOnce()
+    expect(f.sources.sessions).not.toHaveBeenCalled()
+    expect(f.listeners.size).toBe(0)
+  })
+
+  it('waits for the preceding storage close before reopening for another subscriber', async () => {
+    const f = fixture([{ id: S1, urls: [url(7)] }], [state(7)])
+    const first = reader(f.hub)
+    await first.next()
+    const entered = Promise.withResolvers<undefined>()
+    const release = Promise.withResolvers<undefined>()
+    const order: string[] = []
+    f.close.mockImplementationOnce(async () => {
+      entered.resolve(undefined)
+      await release.promise
+      order.push('closed')
+    })
+    const closing = first.close()
+    await entered.promise
+    const second = reader(f.hub)
+    const opening = second.next().then((frame) => { order.push('reopened'); return frame })
+    try {
+      expect(f.sources.open).toHaveBeenCalledOnce()
+    } finally {
+      release.resolve(undefined)
+    }
+
+    await closing
+    expect(await opening).toEqual({ type: 'baseline', states: [state(7)] })
+    expect(order).toEqual(['closed', 'reopened'])
+    expect(f.sources.open).toHaveBeenCalledTimes(2)
+  })
+
 
   it('keeps other readers live when a reader aborts between frames', async () => {
     const f = fixture([{ id: S1, urls: [url(7)] }])
diff --git a/packages/experimental/client-ui-forge/tests/status.client.spec.ts b/packages/experimental/client-ui-forge/tests/status.client.spec.ts
index a736f5c326..523f4e201e 100644
--- a/packages/experimental/client-ui-forge/tests/status.client.spec.ts
+++ b/packages/experimental/client-ui-forge/tests/status.client.spec.ts
@@ -27,8 +27,8 @@ describe('toneOf', () => {
 })
 
 describe('checkCounts', () => {
-  it('groups neutral, skipped, and cancelled checks as other', () => {
-    expect(checkCounts([])).toEqual({ failed: 0, running: 0, passed: 0, other: 0 })
+  it('counts cancellations separately from neutral and skipped checks', () => {
+    expect(checkCounts([])).toEqual({ failed: 0, running: 0, passed: 0, cancelled: 0, other: 0 })
     expect(checkCounts([
       check('lint', { state: 'failure' }),
       check('test', { state: 'pending' }),
@@ -37,7 +37,7 @@ describe('checkCounts', () => {
       check('e2e', { state: 'skipped' }),
       check('perf', { state: 'cancelled' }),
       check('types', { state: 'failure' }),
-    ])).toEqual({ failed: 2, running: 1, passed: 1, other: 3 })
+    ])).toEqual({ failed: 2, running: 1, passed: 1, cancelled: 1, other: 2 })
   })
 })
 
@@ -50,6 +50,13 @@ describe('ciSummary', () => {
     expect(ciSummary(snapshot(1, { checksRollup, checks: [check('lint', { state: 'failure' })] }))).toEqual(summary)
   })
 
+  it('names cancellations when no listed check failed, and gives failures precedence', () => {
+    const cancelled = check('build', { state: 'cancelled' })
+    expect(ciSummary(snapshot(1, { checksRollup: 'failure', checks: [cancelled] }))).toEqual({ kind: 'cancelled', count: 1 })
+    expect(ciSummary(snapshot(1, { checksRollup: 'failure', checks: [cancelled, check('lint', { state: 'failure' })] })))
+      .toEqual({ kind: 'failed', count: 1 })
+  })
+
   it('counts the listed failures of a failed rollup, which can be none when the list is truncated', () => {
     const failed = snapshot(1, {
       checksRollup: 'failure',
diff --git a/packages/experimental/client-ui-forge/tests/worktree-toggle.client.spec.tsx b/packages/experimental/client-ui-forge/tests/worktree-toggle.client.spec.tsx
index 18ee07f760..3aacb86aeb 100644
--- a/packages/experimental/client-ui-forge/tests/worktree-toggle.client.spec.tsx
+++ b/packages/experimental/client-ui-forge/tests/worktree-toggle.client.spec.tsx
@@ -5,7 +5,7 @@ import { afterEach, describe, expect, it, vi } from 'vitest'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
 import { bindSnapshotSelector, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import menuCss from '@deepseek-ai/dsh-client-ui-primitives/src/Menu.module.css'
-import { en } from '../src/client/locales.ts'
+import { en, zh } from '../src/client/locales.ts'
 import type { PanelSnapshot } from '../src/client/source.ts'
 import { WorktreeToggle } from '../src/client/WorktreeToggle.tsx'
 import type { ForgeBranches, ForgeCheckoutState, ForgePanelState, ForgePanelWorktree, ForgeWorktreeBlocker } from '../src/types.ts'
@@ -32,7 +32,7 @@ function deferred<T>() {
   return { promise, resolve }
 }
 
-function option(state: ForgePanelState | null) {
+function option(state: ForgePanelState | null, translate = t) {
   const panel = createSnapshotStore<PanelSnapshot>({ state, disconnected: false })
   const request = vi.fn(async (_from: string | null) => true)
   const cancel = vi.fn(async () => true)
@@ -43,7 +43,7 @@ function option(state: ForgePanelState | null) {
       request={request}
       cancel={cancel}
       branches={branches}
-      t={t}
+      t={translate}
     />,
   )
   const checkbox = (): HTMLInputElement => {
@@ -83,6 +83,7 @@ describe('WorktreeToggle visibility', () => {
     ['once the Session can no longer change its worktree', ready()],
     ['while the first inspection runs', editable({}, { state: 'pending' })],
     ['when the inspection failed', editable({}, { state: 'failed', message: 'git status failed' })],
+    ['outside a Git checkout', editable({ blocker: 'not-git' }, { state: 'none' })],
   ])('renders nothing %s', (_label, state) => {
     expect(option(state).view.container.innerHTML).toBe('')
   })
@@ -97,15 +98,6 @@ describe('WorktreeToggle visibility', () => {
 })
 
 describe('WorktreeToggle checkbox', () => {
-  it('disables the option outside a Git checkout and says why', () => {
-    const b = option(editable({ blocker: 'not-git' }, { state: 'none' }))
-    expect(b.checkbox().disabled).toBe(true)
-    expect(b.checkbox().checked).toBe(false)
-    expect(b.checkbox().closest('label')?.hasAttribute('data-disabled')).toBe(true)
-    expect(b.base()).toBeNull()
-    expect(hint(b)).toBe(en['worktree.blocked.not-git'])
-  })
-
   it.each<[ForgeWorktreeBlocker, string]>([
     ['read-only', en['worktree.blocked.read-only']],
     ['outside-writable-root', en['worktree.blocked.outside-writable-root']],
@@ -118,20 +110,54 @@ describe('WorktreeToggle checkbox', () => {
     expect(hint(b)).toBe(reason)
   })
 
-  it('keeps an open request of a blocked checkout checked, without its base menu, until it is withdrawn', async () => {
-    const b = option(editable({ blocker: 'read-only', request: { from: 'main' } }))
+  it.each(['read-only', 'outside-writable-root'] as const)('keeps the selected base visible after %s blocks a request until it is withdrawn', async (blocker) => {
+    const b = option(editable({ request: { from: 'release' } }))
+    b.publish(editable({ blocker, request: { from: 'release' } }))
     expect(b.checkbox().checked).toBe(true)
     expect(b.checkbox().disabled).toBe(false)
     expect(b.checkbox().closest('label')?.hasAttribute('data-disabled')).toBe(false)
     expect(b.base()).toBeNull()
-    expect(hint(b)).toBe(en['worktree.blocked.read-only'])
+    expect(b.view.getByRole('button', { name: 'From release' }).textContent).toBe('From release')
+    expect(hint(b)).toBe(en[`worktree.blocked.${blocker}`])
     vi.useRealTimers()
     await act(async () => { fireEvent.click(b.checkbox()) })
     expect(b.cancel).toHaveBeenCalledOnce()
     expect(b.request).not.toHaveBeenCalled()
-    b.publish(editable({ blocker: 'read-only' }))
+    b.publish(editable({ blocker }))
     expect(b.checkbox().checked).toBe(false)
     expect(b.checkbox().disabled).toBe(true)
+    expect(b.view.getByRole('button', { name: 'Current branch: main' })).toBeTruthy()
+  })
+
+  it('preserves a HEAD base while blocked and restores the selected branch menu when permission returns', () => {
+    const b = option(editable({ blocker: 'read-only', request: { from: null } }))
+    expect(b.view.getByRole('button', { name: en['worktree.baseHead'] })).toBeTruthy()
+    b.publish(editable({ blocker: 'read-only', request: { from: 'release' } }))
+    b.publish(editable({ request: { from: 'release' } }))
+    expect(b.base()?.textContent).toBe('From release')
+    expect(b.checkbox().checked).toBe(true)
+  })
+
+  it.each([
+    ['en', en, 'Current branch: main', 'Not on a branch · 0a1b2c3'],
+    ['zh', zh, '当前分支：main', '未在分支上 · 0a1b2c3'],
+  ] as const)('names the branch and detached checkout in an informational tooltip (%s)', (_locale, copy, branchLabel, detachedLabel) => {
+    const b = option(editable(), makeTranslate(copy))
+    const chip = b.view.getByRole('button', { name: branchLabel })
+    fireEvent.click(chip)
+    expect(screen.getByRole('tooltip').textContent).toBe(branchLabel)
+    expect(chip.getAttribute('aria-describedby')).toBe(screen.getByRole('tooltip').id)
+    fireEvent.click(chip)
+    expect(screen.queryByRole('tooltip')).toBeNull()
+    b.publish(ready({ worktree: worktree({ editable: true }) }, { branch: null }))
+    const detached = b.view.getByRole('button', { name: detachedLabel })
+    fireEvent.click(detached)
+    expect(screen.getByRole('tooltip').textContent).toBe(detachedLabel)
+    fireEvent.click(detached)
+    b.publish(ready({ worktree: worktree({ editable: true }) }, { branch: null, commit: null }))
+    expect(b.view.getByRole('button', { name: copy['checkout.detached'] })).toBeTruthy()
+    expect(b.request).not.toHaveBeenCalled()
+    expect(b.branches).not.toHaveBeenCalled()
   })
 
   it('offers the option again once the blocker clears', () => {
@@ -142,13 +168,17 @@ describe('WorktreeToggle checkbox', () => {
     expect(hint(b)).toBe(en['worktree.hint'])
   })
 
-  it('offers the option unchecked inside a Git checkout', () => {
+  it('shows the current branch without requesting a worktree inside a Git checkout', () => {
     const b = option(editable())
     expect(b.checkbox().disabled).toBe(false)
     expect(b.checkbox().checked).toBe(false)
     expect(b.checkbox().closest('label')?.hasAttribute('data-disabled')).toBe(false)
     expect(b.base()).toBeNull()
     expect(hint(b)).toBe(en['worktree.hint'])
+    const current = b.view.getByText('main')
+    fireEvent.click(current)
+    expect(b.request).not.toHaveBeenCalled()
+    expect(b.branches).not.toHaveBeenCalled()
   })
 
   it('requests a worktree from the current branch and holds the checked state until the Host answers', async () => {
@@ -171,6 +201,7 @@ describe('WorktreeToggle checkbox', () => {
 
   it('requests a worktree from HEAD on a detached checkout', async () => {
     const b = option(ready({ worktree: worktree({ editable: true }) }, { branch: null }))
+    expect(b.view.getByText(`${en['checkout.detached']} · 0a1b2c3`)).toBeTruthy()
     await act(async () => { fireEvent.click(b.checkbox()) })
     expect(b.request).toHaveBeenCalledWith(null)
     b.publish(ready({ worktree: worktree({ editable: true, request: { from: null } }) }, { branch: null }))
@@ -186,7 +217,7 @@ describe('WorktreeToggle checkbox', () => {
     expect(b.base()).toBeNull()
   })
 
-  it('withdraws an open request and hides the base branch until the Host answers', async () => {
+  it('withdraws an open request and shows the current branch until the Host answers', async () => {
     const b = option(editable({ request: { from: 'release' } }))
     expect(b.checkbox().checked).toBe(true)
     expect(b.base()?.textContent).toBe('From release')
diff --git a/packages/experimental/client-ui-plugin-recommendations/package.json b/packages/experimental/client-ui-plugin-recommendations/package.json
index ca5ad53a49..3e327b5a37 100644
--- a/packages/experimental/client-ui-plugin-recommendations/package.json
+++ b/packages/experimental/client-ui-plugin-recommendations/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/client-ui-stats/package.json b/packages/experimental/client-ui-stats/package.json
index 7cda1c0533..9ed940e3ed 100644
--- a/packages/experimental/client-ui-stats/package.json
+++ b/packages/experimental/client-ui-stats/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-client-ui-stats",
   "description": "Per-turn and per-step context, timing, cache, and tool-cost table contributed as an experimental conversation View",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/client-ui-voice-input/package.json b/packages/experimental/client-ui-voice-input/package.json
index 406b84a7a6..60a9970a9e 100644
--- a/packages/experimental/client-ui-voice-input/package.json
+++ b/packages/experimental/client-ui-voice-input/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-client-ui-voice-input",
   "description": "Record speech and insert editable text into the conversation draft",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/computer-use-cua-driver-mcp/package.json b/packages/experimental/computer-use-cua-driver-mcp/package.json
index da954de8a0..6a4e36cd56 100644
--- a/packages/experimental/computer-use-cua-driver-mcp/package.json
+++ b/packages/experimental/computer-use-cua-driver-mcp/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-computer-use-cua-driver-mcp",
   "description": "Experimental computer use through an installed Cua Driver MCP executable",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/computer-use-cua-driver-native/package.json b/packages/experimental/computer-use-cua-driver-native/package.json
index 5ff213b1f0..a81bee49d3 100644
--- a/packages/experimental/computer-use-cua-driver-native/package.json
+++ b/packages/experimental/computer-use-cua-driver-native/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-computer-use-cua-driver-native",
   "description": "Experimental computer-use provider embedding the Cua Driver native npm SDK",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/cot-translation-bundle/package.json b/packages/experimental/cot-translation-bundle/package.json
index c9c647f89b..913188da44 100644
--- a/packages/experimental/cot-translation-bundle/package.json
+++ b/packages/experimental/cot-translation-bundle/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-cot-translation-bundle",
   "description": "Experimental machine translation of expanded reasoning",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/creation-recommendations/package.json b/packages/experimental/creation-recommendations/package.json
index a773a603c2..79b1be4c84 100644
--- a/packages/experimental/creation-recommendations/package.json
+++ b/packages/experimental/creation-recommendations/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-creation-recommendations",
   "description": "Create persistent removable interface plugins from explicit conversation needs",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/cua-bundle/README.i18n.yaml b/packages/experimental/cua-bundle/README.i18n.yaml
index 8a9c5bf5c8..b8f7ced3c7 100644
--- a/packages/experimental/cua-bundle/README.i18n.yaml
+++ b/packages/experimental/cua-bundle/README.i18n.yaml
@@ -15,8 +15,8 @@
   en: b563e4ec4727d0de
   zh: d0228da978238e05
 /deepseek-ai-dsh-cua-bundle/use-this-package:
-  en: dc35841a42753d00
-  zh: 3c8a03a2ecbec26f
+  en: 92b549c20b7b8e63
+  zh: 90df835c4e9bac75
 /deepseek-ai-dsh-cua-bundle/understand-the-implementation:
   en: b1011db52cfc17cd
   zh: 6fa8798fedc5c0b6
@@ -39,8 +39,8 @@
   en: 417c40acd93df532
   zh: 69cc5cf7140c75a9
 /deepseek-ai-dsh-cua-bundle/known-limitations-and-deferred-work:
-  en: 5586cb62bb16d601
-  zh: 8b06372c77d0cd48
+  en: 7d91694e2f6b111e
+  zh: 54bcc0cef9496ed6
 /deepseek-ai-dsh-cua-bundle/known-limitations-and-deferred-work/dev-note:
   en: 0a1253c6f7b5e8b9
   zh: ce96645b3e75874e
diff --git a/packages/experimental/cua-bundle/README.md b/packages/experimental/cua-bundle/README.md
index 07bb816d6d..63bdd67b27 100644
--- a/packages/experimental/cua-bundle/README.md
+++ b/packages/experimental/cua-bundle/README.md
@@ -24,7 +24,7 @@ Enable macOS Computer Use from Plugins for existing and new PTC sessions. Window
 <a id="use-this-package"></a>
 ## Use this package
 
-This workflow targets developers running macOS Web or unpackaged Desktop from source. In **Plugins → Add plugin**, enter `@deepseek-ai/dsh-cua-bundle`, choose **Install**, then **Enable now**. DSH enables its shipped copy without downloading another one. Enabled bundles remain in Plugins, where you can open Computer Use to manage permissions or switch it off. Switching off hides its card again unless the profile separately installed it. The permission page identifies the responsible application reported by macOS when the optional system query is available. Request access and enable that application in System Settings; follow the application named by macOS if it differs from the detected source. For Web, run these commands from the repository root:
+In macOS Desktop, open **Plugins → Add plugin**, enter `@deepseek-ai/dsh-cua-bundle`, choose **Install**, then **Enable now**. DSH installs the official version matching its runtime into the profile. Published packages contain the signed and notarized helper; users need no compiler. Source Web and development Desktop link the workspace bundle and prepare an ad-hoc helper when enabled. Open Computer Use details, choose PTC if needed, and grant Accessibility and Screen Recording to `DSH Computer Use.app`. Disabled installed bundles remain available for management. For source Web, run these commands from the repository root:
 
 ```sh
 pnpm run build
@@ -37,7 +37,7 @@ The switch saves bundle selection in the profile’s `package.json`. Computer Us
 
 Disabling unloads the provider and withdraws CUA tools from its Agent scopes. Runtime configuration, the new-session default and saved grants remain.
 
-Computer Use is available only on a macOS DSH Host. The native provider is an optional dependency installed only on macOS; shared CUA and Client packages remain in the installation. Other Hosts hide the bundle from default plugin lists and model recommendations and refuse enablement before saving settings. Explicit profile dependencies and saved selections remain visible for management. An already selected bundle is skipped at startup with a diagnostic and remains available for deselection; saved user settings remain. A browser on another operating system can connect to a supported Mac Host.
+Computer Use is available only on a macOS DSH Host. The native provider is an optional dependency installed only on macOS; the bundle and its shared libraries install on demand. Other Hosts hide the bundle from default plugin lists and model recommendations and refuse enablement before saving settings. Explicit profile dependencies and saved selections remain visible for management. An already selected bundle is skipped at startup with a diagnostic and remains available for deselection; saved user settings remain. A browser on another operating system can connect to a supported Mac Host.
 
 If preparation fails, the saved selection remains and CUA operations stay unavailable. Refresh or reopen the plugin page to read the component diagnostic, correct its cause, then restart DSH.
 
@@ -85,7 +85,7 @@ CUA activation and removal change the PTC SDK and system guidance; subsequent re
 
 <a id="known-limitations-and-deferred-work"></a>
 
-- Source Web and Desktop share permission controls on macOS. Packaged Desktop helper distribution, signing, and permission attribution are deferred.
+- First installation requires a reachable registry carrying the matching DSH version. System permissions require the user’s approval in macOS; installation does not grant them.
 - PTC execution is shared by the profile and is configured independently. A Host without HMR applies saved changes at restart.
 
 <a id="dev-note"></a>
diff --git a/packages/experimental/cua-bundle/README.zh.md b/packages/experimental/cua-bundle/README.zh.md
index 2189839134..e537ab287e 100644
--- a/packages/experimental/cua-bundle/README.zh.md
+++ b/packages/experimental/cua-bundle/README.zh.md
@@ -24,7 +24,7 @@ kind: "package-bundle"
 <a id="use-this-package"></a>
 ## 使用本包
 
-本流程面向从源码运行 macOS Web 或未打包 Desktop 的开发者。在「插件 → 添加插件」中输入 `@deepseek-ai/dsh-cua-bundle`，点击「安装」，再点击「立即启用」。DSH 会启用随应用提供的副本，无需重新下载。已启用的组合包保留在插件页，可打开 Computer Use 管理权限或将其关闭。关闭后卡片再次隐藏，除非该 profile 单独安装了它。权限页通过可选系统查询显示 macOS 报告的责任应用，指引用户申请权限并在系统设置中开启对应开关。若 macOS 显示其他应用名称，以系统提示为准。Web 版在仓库根目录运行以下命令：
+在 macOS Desktop 的“插件 → 添加插件”中输入 `@deepseek-ai/dsh-cua-bundle`，点击“安装”，再点击“立即启用”。DSH 将与当前运行时版本匹配的官方插件安装到 profile。发布包包含已签名和公证的 helper，用户无需编译工具。源码 Web 和开发 Desktop 链接工作区组合包，启用时准备临时签名的 helper。打开 Computer Use 详情，按需设置 PTC，并为 `DSH Computer Use.app` 授予辅助功能和屏幕录制权限。已安装的组合包关闭后仍可管理。源码 Web 在仓库根目录运行以下命令：
 
 ```sh
 pnpm run build
@@ -37,7 +37,7 @@ pnpm dsh web
 
 关闭会卸载提供方，并从其 Agent 作用域中撤回 CUA 工具。执行器配置、新会话默认值和已保存的授权保留。
 
-Computer Use 仅支持 macOS DSH Host。原生提供方是仅在 macOS 安装的可选依赖，共享 CUA 和 Client 包仍随安装提供。其他 Host 默认不在插件列表和模型推荐中展示此组合包，并在保存设置前拒绝启用。profile 显式安装的依赖和已保存的选择仍保留管理入口。已选中的组合包会在启动时跳过并报告原因，仍可取消选择；已保存的用户设置保留。其他操作系统上的浏览器可以连接受支持的 Mac Host。
+Computer Use 仅支持 macOS DSH Host。原生提供方是仅在 macOS 安装的可选依赖，组合包和共享库均按需安装。其他 Host 默认不在插件列表和模型推荐中展示此组合包，并在保存设置前拒绝启用。profile 显式安装的依赖和已保存的选择仍保留管理入口。已选中的组合包会在启动时跳过并报告原因，仍可取消选择；已保存的用户设置保留。其他操作系统上的浏览器可以连接受支持的 Mac Host。
 
 准备失败时，已保存的选择保留，CUA 操作不可用。刷新或重新打开插件页查看组件诊断，修复后重启 DSH。
 
@@ -85,7 +85,7 @@ CUA 生效和卸载会改变 PTC SDK 与系统指引，后续请求使用更新
 
 <a id="known-limitations-and-deferred-work"></a>
 
-- 源码 Web 与 Desktop 共用 macOS 权限控件。桌面安装包的 helper 分发、签名和权限归属留待后续处理。
+- 首次安装需要能访问提供匹配 DSH 版本的注册表。系统权限需用户在 macOS 中确认，安装插件不会自动授予权限。
 - PTC 执行方式由 profile 共享，需单独配置。未启用 HMR 的 Host 在重启时应用已保存的变更。
 
 <a id="dev-note"></a>
diff --git a/packages/experimental/cua-bundle/package.json b/packages/experimental/cua-bundle/package.json
index 0b1b797701..604a02ea63 100644
--- a/packages/experimental/cua-bundle/package.json
+++ b/packages/experimental/cua-bundle/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-cua-bundle",
   "description": "Optional macOS Computer Use and permission setup",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/cua-macos/README.i18n.yaml b/packages/experimental/cua-macos/README.i18n.yaml
index 4ae23aa116..c9ff605b3b 100644
--- a/packages/experimental/cua-macos/README.i18n.yaml
+++ b/packages/experimental/cua-macos/README.i18n.yaml
@@ -12,11 +12,11 @@
   en: 4549f02fc53854a5
   zh: 6f74f1130b6623a8
 /deepseek-ai-dsh-experimental-cua-macos/table-of-contents:
-  en: 02455cf3360adcec
-  zh: 6c8cb57c12b1b68d
+  en: 395f2a62b2ce6b4a
+  zh: 67912bb946c78837
 /deepseek-ai-dsh-experimental-cua-macos/use-this-package:
-  en: 5a3a27401c125106
-  zh: e230fe49d783bf3c
+  en: 86f0d93baf627b8a
+  zh: df27e9c87893f97c
 /deepseek-ai-dsh-experimental-cua-macos/use-this-package/connect-an-external-execution-environment:
   en: 786b8fd630b11e5f
   zh: 55143f15486afce8
@@ -45,8 +45,8 @@
   en: a2c9acb5a4320dda
   zh: e8d1586af60215c4
 /deepseek-ai-dsh-experimental-cua-macos/known-limitations-and-deferred-work:
-  en: 6081dbea9d334488
-  zh: 1145f2b0692f2425
+  en: d57dbc7f973d6104
+  zh: dae87bc6ee99a2a2
 /deepseek-ai-dsh-experimental-cua-macos/known-limitations-and-deferred-work/dev-note:
   en: b836f01bd0bceb4a
   zh: 8122fa08b2aa95fa
diff --git a/packages/experimental/cua-macos/README.md b/packages/experimental/cua-macos/README.md
index a5e8bbff45..da51cf0e80 100644
--- a/packages/experimental/cua-macos/README.md
+++ b/packages/experimental/cua-macos/README.md
@@ -22,31 +22,28 @@ Inspect macOS permissions, select running applications and windows, read accessi
 
 The helper supplies bounded 64-pixel PNG application icons for permission prompts and saved-application lists. Icon reads do not launch an application or inspect its windows; icons do not determine reusable consent.
 
-The shared helper queries the process macOS considers responsible for it and captures that application’s name and icon before announcing readiness. A Desktop app launched from Terminal can therefore identify Terminal even when another GUI application sits between it and the helper. Permission queries retain this metadata after the responsible application exits and across connections sharing the helper. If the system query or application metadata is unavailable, the field is omitted and the UI uses the system prompt for guidance.
+The helper runs through LaunchServices as the independent background application `DSH Computer Use.app`. Accessibility and Screen Recording permissions belong to this application. The permission page uses its system-reported name and icon; when attribution is unavailable, the system prompt identifies the application.
 
 -----
 
 <a id="use-this-package"></a>
 ## Use this package
 
-This package is an optional dependency restricted to macOS. Prepare the matching executable under `native/bin` before packing; that directory is included in the archive. Installed packages require the prepared helper and do not compile Swift.
+This package is an optional macOS dependency. For local development, run `pnpm --dir packages/experimental/cua-macos run build:native` to generate an ad-hoc-signed application and `current.json` under `native/bin`. Release packaging requires `--identity "Developer ID Application: <name> (<team>)"` and notarization; see [native build and service](native/README.md#build-and-service). Installed packages preserve the distributed signature. Source preparation requires Swift and Python 3 from Apple Command Line Tools.
 
 For repository Web use, enable [Computer Use](../cua-bundle/README.md) in Plugins. This prepares the local executable on macOS 14 or later; Windows support is in development. Subsequent builds check it while the existing Web profile keeps the bundle selected. Disabled profiles do not prepare native components. Explicit source composition is also available:
 
 ```sh
-swift build --package-path packages/experimental/cua-macos/native --configuration release
-cua_native_root="$PWD/packages/experimental/cua-macos/native"
-export DSH_CUA_HELPER="$cua_native_root/.build/release/dsh-cua-native"
 pnpm dsh headless --patch packages/experimental/cua-macos/examples/macos.cordis.yml --dump-config
 ```
 
-The dump command checks profile composition without a model request. For a real task, replace `--dump-config` with a prompt and configure the profile’s model credentials. The overlay mounts the computer-use registry and this provider; remove an existing competing provider before using it. The responsible host/helper needs Accessibility permission for AX/input and Screen Recording permission for capture. `getCapabilities` reports permissions and session lock state without opening a system dialog. Locked or unavailable desktop sessions reject UI observations and input before dispatch; the user must unlock macOS before resuming. `listApps` and `cua.getState` list running applications. `findApps(query)` searches standard macOS application directories by name, bundle ID or absolute path. `getApp` selects a unique name, bundle ID, path or running PID, obtains application consent, and launches a stopped app in the background when needed. A stopped application’s bundle identifier and executable path are read from disk before approval and rechecked before and after launch; applications without a bundle identifier use their canonical executable path for reusable consent. Selecting a stopped installation requests a new instance of that copy. The helper waits for the launched application to finish launching before returning its PID. A post-launch verification failure expires the pending handle but can leave the process running; inspect running applications before selecting a fresh handle. The returned object reads initial AX without activating the app. Launch cancellation may leave the application running. Model guidance starts with background observation and input, without activation during initialization or before each action. For hidden or minimized windows, try `app.show()` or `window.show()` and read fresh state. This requests unhide and unminimize without activation, raising or switching Spaces; app-level restoration selects the focused, main or sole AX window. The result names the selected `windowId`, or null when no window was selected, and reports `foregroundChanged` by comparing the front app and top window before and after the request. Null means foreground evidence was unavailable; later focus changes remain possible. If restoration fails or the window remains unusable, explain the needed foreground step, call `app.activate()` or an observed window’s `raise` action, then observe again. Necessary foreground access takes priority over preserving focus. Applications may change focus after input; background delivery does not guarantee an undisturbed user session.
+The dump command checks profile composition without a model request. For a real task, replace `--dump-config` with a prompt and configure the profile’s model credentials. The overlay mounts the computer-use registry and this provider; remove an existing competing provider before using it. `DSH Computer Use.app` needs Accessibility permission for AX/input and Screen Recording permission for capture; grant these permissions to the helper when prompted. `getCapabilities` reports permissions and session lock state without opening a system dialog. Locked or unavailable desktop sessions reject UI observations and input before dispatch; the user must unlock macOS before resuming. `listApps` and `cua.getState` list running applications. `findApps(query)` searches standard macOS application directories by name, bundle ID or absolute path. `getApp` selects a unique name, bundle ID, path or running PID, obtains application consent, and launches a stopped app in the background when needed. A stopped application’s bundle identifier and executable path are read from disk before approval and rechecked before and after launch; applications without a bundle identifier use their canonical executable path for reusable consent. Selecting a stopped installation requests a new instance of that copy. The helper waits for the launched application to finish launching before returning its PID. A post-launch verification failure expires the pending handle but can leave the process running; inspect running applications before selecting a fresh handle. The returned object reads initial AX without activating the app. Launch cancellation may leave the application running. Model guidance starts with background observation and input, without activation during initialization or before each action. For hidden or minimized windows, try `app.show()` or `window.show()` and read fresh state. This requests unhide and unminimize without activation, raising or switching Spaces; app-level restoration selects the focused, main or sole AX window. The result names the selected `windowId`, or null when no window was selected, and reports `foregroundChanged` by comparing the front app and top window before and after the request. Null means foreground evidence was unavailable; later focus changes remain possible. If restoration fails or the window remains unusable, explain the needed foreground step, call `app.activate()` or an observed window’s `raise` action, then observe again. Necessary foreground access takes priority over preserving focus. Applications may change focus after input; background delivery does not guarantee an undisturbed user session.
 
 | Field | Default | Meaning |
 | --- | --- | --- |
 | `agentPreset` | `ptc` | Register tools and guidance only for Agents bound to this preset; `false` registers globally. |
 | `allowedApps` | `[]` | Legacy path/signature grants, imported once for removal; they do not authorize new bundle-ID identities. |
-| `helperPath` | package-owned executable | Optional absolute native executable override. |
+| `helperPath` | package-owned executable | Absolute executable inside the signed helper `.app`; a bare binary fails with `NATIVE_APPLICATION_REQUIRED`. |
 | `buildTimeoutMs` | `300000` | Maximum native preparation time. |
 | `timeoutMs` | `30000` | Per-operation deadline; cancellation can leave partial input. |
 | `connectTimeoutMs` | `5000` | Deadline for connecting to or starting the shared helper. |
@@ -79,7 +76,7 @@ Observations emit by default and also return their value. In persistent PTC, use
 
 Screenshot diagnostics use `[cua-screenshot]` records keyed by the tool request ID. Native phase records return over the originating Agent connection and cover window/AX geometry checks, system capture, PNG/Base64 encoding and response writing. Host debug logs add dispatch, reply and cleanup timings. Each request retains at most 8192 bytes of complete diagnostic records, with explicit truncation; screenshot failures append these records to the error for Session export. Records contain stages, timings and error codes, not window titles, AX text or image bytes.
 
-Native preparation serializes compiler checks and publication with the shared file lock. It updates the package payload and runs a content-addressed copy under native/.build/prepared, preserving executable files used by earlier source-runtime processes. Identical builds reuse the same file; corrupted retained copies fail validation. Cancellation and preparation failure finish managed process cleanup before releasing the lock.
+Native preparation serializes building and signing with a file lock. It retains complete applications under content-addressed `native/.build/prepared` directories and atomically selects a generation through `current.json`. Existing connections retain their application; identical builds reuse its files, and corrupted copies are rejected. Cancellation and failure finish managed process cleanup before releasing the lock.
 
 ### Connect an external execution environment
 
@@ -218,7 +215,8 @@ The queue orders individual native requests. Holding an app object does not rese
 - macOS Stage Manager can reduce background window bounds and screenshots to thumbnails. Full-window observation and coordinate input in this state are not guaranteed; model guidance requires explaining foreground needs and avoiding repeated focus reclamation.
 - Background input depends on private SkyLight symbols; macOS updates can make them unavailable. Validate each target OS version.
 - Observed failures include dispatched Unicode text not appearing in Blender and background Command+A not selecting all text in AppKit. Inspect application state after input; a successful tool result confirms dispatch only.
-- Native binaries require a local build. Signing and Desktop distribution remain future work. The [permission page](../cua/README.md) offers macOS prompts and app revocation; packaged Desktop permission attribution remains deferred.
+- Source builds use ad-hoc signatures and may require authorization again after source changes. Release distribution needs a stable Developer ID signature and notarization; the build command accepts `--identity`, and installed packages preserve the distributed signature. The [permission page](../cua/README.md) offers helper authorization and target-application revocation.
+- Release packaging does not automatically verify GUI startup, helper identity or exit cleanup. Release maintainers can run the [distribution smoke](native/README.md#build-and-service) on a logged-in Mac before publication; a successful package build does not establish those runtime results.
 - Saved permission rows show the name, path and icon of one approved copy, not an inventory of every installation sharing its identity. Removing that copy can leave its icon unavailable. Revocation still applies to every copy with the same identity.
 - If macOS does not expose a running application’s bundle identifier, the helper checks its reported bundle only when its executable matches the observed process path, then falls back to that path. Consent identity creation fails only when both the bundle identifier and actual executable path are unavailable; process-instance verification can still fail independently.
 - Persistent PTC is an external dependency assumption, not an implementation in this package. Real-model task success requires separate evaluation beyond native and protocol fixtures.
diff --git a/packages/experimental/cua-macos/README.zh.md b/packages/experimental/cua-macos/README.zh.md
index e324b7b2cc..3fdd1ed5f6 100644
--- a/packages/experimental/cua-macos/README.zh.md
+++ b/packages/experimental/cua-macos/README.zh.md
@@ -22,31 +22,28 @@ kind: "package-reference"
 
 helper 为授权提示和已授权应用列表提供 64 像素 PNG 图标。读取图标不会启动应用或检查窗口，图标不决定可复用授权。
 
-共享 helper 查询 macOS 为它记录的责任进程，在发布就绪状态前保存对应应用的名称和图标。因此，从 Terminal 启动 Desktop 时，即使中间还有另一个 GUI 应用，也能识别到 Terminal。责任应用退出后，权限查询仍保留这些信息，后续复用该 helper 的连接读取同一份记录。系统查询或应用信息不可用时省略该字段，由界面引导用户按系统弹窗选择授权对象。
+helper 通过 LaunchServices 以独立的 `DSH Computer Use.app` 后台运行，辅助功能和屏幕录制权限归属于这个应用。权限页使用系统返回的应用名称和图标；无法查询归属时，以系统授权提示为准。
 
 -----
 
 <a id="use-this-package"></a>
 ## 使用本包
 
-本包是仅限 macOS 的可选依赖。打包前需在 `native/bin` 下准备对应架构的可执行文件，该目录会包含在发布包中。安装版需要准备好的 helper，不会编译 Swift。
+本包是仅限 macOS 的可选依赖。本地开发时运行 `pnpm --dir packages/experimental/cua-macos run build:native`，在 `native/bin` 下生成临时签名应用及 `current.json`。正式打包需要指定 `--identity "Developer ID Application: <name> (<team>)"` 并完成公证，参见[原生构建与服务](native/README.zh.md#build-and-service)。安装版保留分发时的签名。源码准备需要 Apple Command Line Tools 提供的 Swift 和 Python 3。
 
 从仓库运行 Web 时，在插件页开启 [Computer Use](../cua-bundle/README.zh.md)。首次启用会在 macOS 14 及以上准备本机组件，Windows 支持正在开发中。现有 Web profile 保持选中时，后续构建继续检查更新。未开启的 profile 不准备原生组件。也可以显式加载源码覆盖层：
 
 ```sh
-swift build --package-path packages/experimental/cua-macos/native --configuration release
-cua_native_root="$PWD/packages/experimental/cua-macos/native"
-export DSH_CUA_HELPER="$cua_native_root/.build/release/dsh-cua-native"
 pnpm dsh headless --patch packages/experimental/cua-macos/examples/macos.cordis.yml --dump-config
 ```
 
-配置输出命令不发起模型请求。执行真实任务时，将 `--dump-config` 替换为任务提示，并配置该 profile 的模型凭据。配置挂载 computer-use 注册表和本 provider；使用前需移除已有的竞争 provider。负责执行的宿主或辅助进程需要辅助功能权限来读取 AX 和输入，需要屏幕录制权限来截图。`getCapabilities` 查询权限和锁屏状态，不弹出系统授权窗口。桌面会话锁定或不可用时，界面观察与输入会在分派前拒绝，需由用户解锁 macOS 后继续。`listApps` 和 `cua.getState` 列出运行中的应用。`findApps(query)` 按名称、bundle ID 或绝对路径搜索 macOS 标准应用目录。`getApp` 按唯一名称、bundle ID、路径或运行中的 PID 选择应用，取得应用许可后，在需要时后台启动尚未运行的应用。授权前从磁盘读取应用的 Bundle ID 和可执行路径，在启动前后重新读取并核对；没有 Bundle ID 的应用使用规范化的可执行路径复用授权。选择尚未运行的安装副本时，会请求为该副本创建新实例。helper 等待应用完成启动后才返回其 PID。启动后验证失败会使待启动句柄失效，但进程可能仍在运行；应先查看运行中的应用，再取得新句柄。返回的对象读取初始 AX，不自动激活应用。启动被取消时，应用可能已经运行。模型指引要求先在后台观察和输入，不在初始化或每次动作前激活应用。窗口隐藏或最小化时，先尝试 `app.show()` 或 `window.show()`，再重新观察。它请求取消隐藏和恢复最小化，不主动激活、抬起窗口或切换桌面空间；应用级恢复选择焦点窗口、主窗口或唯一 AX 窗口。结果通过 `windowId` 指明选中的窗口，未选中时为 null；`foregroundChanged` 比较操作前后的前台应用和最上层窗口，无法取得完整观察时为 null，返回后仍可能发生焦点变化。恢复失败或窗口仍不可用时，说明需要前台的步骤，再调用 `app.activate()` 或窗口的 `raise` 动作并重新观察。必须使用前台时，以完成任务为先。应用收到输入后仍可能改变焦点，后台投递不保证用户操作始终不受干扰。
+配置输出命令不发起模型请求。执行真实任务时，将 `--dump-config` 替换为任务提示，并配置该 profile 的模型凭据。配置挂载 computer-use 注册表和本 provider；使用前需移除已有的竞争 provider。`DSH Computer Use.app` 需要辅助功能权限来读取 AX 和输入，需要屏幕录制权限来截图；按系统提示给 helper 授权。`getCapabilities` 查询权限和锁屏状态，不弹出系统授权窗口。桌面会话锁定或不可用时，界面观察与输入会在分派前拒绝，需由用户解锁 macOS 后继续。`listApps` 和 `cua.getState` 列出运行中的应用。`findApps(query)` 按名称、bundle ID 或绝对路径搜索 macOS 标准应用目录。`getApp` 按唯一名称、bundle ID、路径或运行中的 PID 选择应用，取得应用许可后，在需要时后台启动尚未运行的应用。授权前从磁盘读取应用的 Bundle ID 和可执行路径，在启动前后重新读取并核对；没有 Bundle ID 的应用使用规范化的可执行路径复用授权。选择尚未运行的安装副本时，会请求为该副本创建新实例。helper 等待应用完成启动后才返回其 PID。启动后验证失败会使待启动句柄失效，但进程可能仍在运行；应先查看运行中的应用，再取得新句柄。返回的对象读取初始 AX，不自动激活应用。启动被取消时，应用可能已经运行。模型指引要求先在后台观察和输入，不在初始化或每次动作前激活应用。窗口隐藏或最小化时，先尝试 `app.show()` 或 `window.show()`，再重新观察。它请求取消隐藏和恢复最小化，不主动激活、抬起窗口或切换桌面空间；应用级恢复选择焦点窗口、主窗口或唯一 AX 窗口。结果通过 `windowId` 指明选中的窗口，未选中时为 null；`foregroundChanged` 比较操作前后的前台应用和最上层窗口，无法取得完整观察时为 null，返回后仍可能发生焦点变化。恢复失败或窗口仍不可用时，说明需要前台的步骤，再调用 `app.activate()` 或窗口的 `raise` 动作并重新观察。必须使用前台时，以完成任务为先。应用收到输入后仍可能改变焦点，后台投递不保证用户操作始终不受干扰。
 
 | 字段 | 默认值 | 含义 |
 | --- | --- | --- |
 | `agentPreset` | `ptc` | 仅为绑定该 preset 的 Agent 注册工具和指引；`false` 表示全局注册。 |
 | `allowedApps` | `[]` | 旧路径和签名许可，只导入 profile 存储一次供撤销，不授予新 Bundle ID 身份访问权限。 |
-| `helperPath` | 包内可执行文件 | 可选的原生可执行文件绝对路径覆盖。 |
+| `helperPath` | 包内可执行文件 | 已签名 helper `.app` 内可执行文件的绝对路径；裸二进制会触发 `NATIVE_APPLICATION_REQUIRED`。 |
 | `buildTimeoutMs` | `300000` | 原生组件准备的最长时间。 |
 | `timeoutMs` | `30000` | 单次操作截止时间，取消后可能已发生部分输入。 |
 | `connectTimeoutMs` | `5000` | 连接或启动共享 helper 的截止时间。 |
@@ -79,7 +76,7 @@ AX 观察默认只展示菜单栏入口。使用 `app.getAXState({ includeMenus:
 
 截图诊断使用带工具请求 ID 的 `[cua-screenshot]` 记录。原生阶段记录经本次 Agent 连接返回，覆盖窗口及 AX 几何检查、系统截图、PNG/Base64 编码和响应写出。Host 调试日志补充发送、响应和清理耗时。每次请求最多保留 8192 字节完整诊断记录，超限会明确标记；截图失败时附在错误中，保留到 Session trace。记录只含阶段、耗时和错误码，不含窗口标题、AX 正文或图片内容。
 
-原生准备复用文件锁，串行检查编译和发布。构建更新包内产物，并从 native/.build/prepared 下按内容摘要区分的副本运行，保留旧源码进程使用的可执行文件。相同构建复用同一文件；保留的副本损坏时拒绝使用。取消或准备失败后，先完成受管进程清理再释放锁。
+原生准备通过文件锁串行构建和签名，将完整应用保存在 `native/.build/prepared` 下的内容摘要目录中，再原子更新 `current.json`。旧连接继续使用原应用，相同构建复用已有文件，损坏的副本拒绝使用。取消或准备失败后，先完成受管进程清理再释放锁。
 
 ### 接入外部执行环境
 
@@ -218,7 +215,8 @@ Use selectText only on controls advertising selectionWritable. It selects a uniq
 - macOS 台前调度可能将后台窗口的尺寸与截图变为缩略图，当前无法保证这种状态下的完整画面与坐标输入；模型指引要求说明前台需求并避免反复抢回焦点。
 - 后台输入依赖私有 SkyLight 符号，macOS 升级可能使其不可用，需在目标系统版本验证。
 - 实测 Blender Unicode 输入曾出现分派成功但界面未显示文本，后台 AppKit 的 Command+A 曾未选中全文。输入后必须检查应用状态；工具返回成功只表示已分派。
-- 原生二进制需要本地构建，签名和桌面分发留待后续。[权限页面](../cua/README.zh.md)提供 macOS 申请入口和应用授权撤销；桌面安装包的权限归属留待后续处理。
+- 源码构建使用临时签名，源码变化后可能需要重新授权。正式分发应以固定 Developer ID 签名并完成公证；构建命令支持 `--identity` 指定签名身份，安装版保留分发时的签名。[权限页面](../cua/README.zh.md)提供 helper 授权入口和目标应用许可撤销。
+- 发布打包不自动验证 GUI 启动、helper 身份或退出清理。发布维护者可在发布前，在已登录桌面的 Mac 上执行[分发 smoke](native/README.zh.md#build-and-service)；打包成功不能证明这些运行行为已通过验收。
 - 已保存许可的条目显示一个已批准副本的名称、路径和图标，不枚举共享身份的所有安装副本。删除该副本后图标可能不可用，撤销仍作用于同一身份的所有副本。
 - macOS 无法提供运行中应用的 Bundle ID 时，helper 仅在其报告的 bundle 可执行路径与实际进程路径相同时读取该 bundle，仍无标识则使用路径。只有 Bundle ID 和实际可执行路径均不可用时才拒绝生成授权身份；进程实例验证仍可能独立失败。
 - 持久 PTC 是对外部运行环境的假设，本包不实现它。真实模型任务成功率需要在原生测试和协议测试之外单独评估。
diff --git a/packages/experimental/cua-macos/examples/macos.cordis.yml b/packages/experimental/cua-macos/examples/macos.cordis.yml
index f1b471523d..fa6714f704 100644
--- a/packages/experimental/cua-macos/examples/macos.cordis.yml
+++ b/packages/experimental/cua-macos/examples/macos.cordis.yml
@@ -5,4 +5,5 @@
       name: '../src/index.ts'
       config:
         agentPreset: false
+        # DSH_CUA_HELPER must name DSH Computer Use.app/Contents/MacOS/dsh-cua-native.
         helperPath: !!js process.env.DSH_CUA_HELPER
diff --git a/packages/experimental/cua-macos/native/DSHComputerUse.icns b/packages/experimental/cua-macos/native/DSHComputerUse.icns
new file mode 100644
index 0000000000..6604fbf8f2
Binary files /dev/null and b/packages/experimental/cua-macos/native/DSHComputerUse.icns differ
diff --git a/packages/experimental/cua-macos/native/Info.plist b/packages/experimental/cua-macos/native/Info.plist
new file mode 100644
index 0000000000..d9bcb99834
--- /dev/null
+++ b/packages/experimental/cua-macos/native/Info.plist
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>CFBundleIdentifier</key>
+    <string>com.deepseek.harness.computer-use</string>
+    <key>CFBundleExecutable</key>
+    <string>dsh-cua-native</string>
+    <key>CFBundleName</key>
+    <string>DSH Computer Use</string>
+    <key>CFBundleDisplayName</key>
+    <string>DSH Computer Use</string>
+    <key>CFBundleIconFile</key>
+    <string>DSHComputerUse.icns</string>
+    <key>CFBundlePackageType</key>
+    <string>APPL</string>
+    <key>CFBundleVersion</key>
+    <string>1</string>
+    <key>LSMinimumSystemVersion</key>
+    <string>14.0</string>
+    <key>LSUIElement</key>
+    <true/>
+</dict>
+</plist>
diff --git a/packages/experimental/cua-macos/native/LICENSE.computer-use-icon b/packages/experimental/cua-macos/native/LICENSE.computer-use-icon
new file mode 100644
index 0000000000..749b7ddd5a
--- /dev/null
+++ b/packages/experimental/cua-macos/native/LICENSE.computer-use-icon
@@ -0,0 +1,18 @@
+Computer Use icon adapted from Lucide mouse-pointer-click.
+Source artwork: packages/experimental/cua-bundle/icon.svg
+https://lucide.dev/icons/mouse-pointer-click
+
+ISC License
+Copyright (c) 2026 Lucide Icons and Contributors
+https://github.com/lucide-icons/lucide/blob/main/LICENSE
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/packages/experimental/cua-macos/native/README.i18n.yaml b/packages/experimental/cua-macos/native/README.i18n.yaml
index 23ae868871..83bbf0b697 100644
--- a/packages/experimental/cua-macos/native/README.i18n.yaml
+++ b/packages/experimental/cua-macos/native/README.i18n.yaml
@@ -15,17 +15,17 @@
   en: e8cbc43d38786c40
   zh: 52b3ba85d98011b9
 /dsh-cua-native-helper/build-and-service:
-  en: 02b25ac1126b6094
-  zh: 3995a1f46354531b
+  en: 7619d37566e773ef
+  zh: c8f6e37f19ad9763
 /dsh-cua-native-helper/request-protocol:
   en: fc8043c425322cdd
   zh: cf1edb9a78fda301
 /dsh-cua-native-helper/observation-and-input:
-  en: c527eedc3a0ee968
-  zh: ce8cc12d5a62e8ae
+  en: caeccd866da14a36
+  zh: 6a82e3a16a03813e
 /dsh-cua-native-helper/verification:
-  en: a289c618b5ec1465
-  zh: 9e486bf688bf329e
+  en: 706d3434799530b3
+  zh: e327c5fc7330c2b9
 /dsh-cua-native-helper/further-exploration:
   en: 265e1927952ce6d7
   zh: 7c35d9fd98b6e6c8
diff --git a/packages/experimental/cua-macos/native/README.md b/packages/experimental/cua-macos/native/README.md
index bdcd26e6a0..ae932f0a97 100644
--- a/packages/experimental/cua-macos/native/README.md
+++ b/packages/experimental/cua-macos/native/README.md
@@ -23,7 +23,21 @@ This macOS 14+ JSON-lines helper uses Swift 6, AppKit, Accessibility, CoreGraphi
 <a id="build-and-service"></a>
 ## Build and service
 
-Build with `swift build --package-path packages/experimental/cua-macos/native --configuration release`. The binary is `.build/release/dsh-cua-native` beneath this directory. The Host runs `--ensure-shared` as a managed startup command; the serving process then belongs to its connected clients and exits after the last connection finishes cleanup. The `.build/` directory is not committed.
+Run `pnpm --dir packages/experimental/cua-macos run build:native` to publish a signed `DSH Computer Use.app` under `native/bin/darwin-<arch>`. The `current.json` receipt selects a complete content-addressed generation. Signing defaults to ad hoc; release packagers can pass `--identity` for Developer ID signing and must notarize the distribution. The Host runs the application executable with `--ensure-shared`, which launches the background service through LaunchServices. The service exits after its last connection finishes cleanup.
+
+Generations in `native/.build/prepared/<arch>` and `native/bin/darwin-<arch>` are retained without automatic garbage collection. Use a fresh `--output-directory` for release staging, or clean the packaging output before building while no client uses it, so old generations do not enter the tarball. Secure signing timestamps can create distinct generations for identical sources.
+
+The manual **Package CUA helper · macOS** [workflow](../../../../.github/workflows/cua-helper-package.yml) builds both architectures on `dsh-mac-package-trial`. Select a trusted `source_ref` and machine `preset`; credentials use the existing [macOS packaging configuration](../../../../apps/desktop/packaging/README.md#macos-actions). Packaging does not require a macOS desktop login or Rosetta. `pnpm exec tsx scripts/cua-helper/package.ts --out <new-directory>` runs the same preparation from the repository root. It signs, notarizes and staples each complete application before selecting its final content digest, then verifies architectures, signatures, tickets, Gatekeeper and file integrity from the extracted `cua-helper.tgz`. Packaging does not launch the helper. Run `python3 scripts/cua-helper/smoke.py <helper-executable>` separately in a logged-in desktop session to check capabilities, helper identity and cleanup; x64 execution on Apple Silicon requires Rosetta. The smoke does not request permissions or inspect applications. Failed or timed-out commands and unreadable startup replies report captured stdout and stderr; invalid encoding is replaced only in diagnostic text, while protocol parsing remains strict. A successful package build does not certify runtime behavior.
+
+The workflow retains `cua-helper.tgz` and `cua-helper.json`, which binds the product version, source commit, Team ID and both application digests. [Release publish](../../../../.github/workflows/release-publish.yml) consumes this artifact before packing the provider for npm; ordinary PR release rehearsals have no signing credentials. Staging rejects a source/version mismatch, incomplete architectures, stale generations, links, changed bytes and missing executable permissions. npm publication rechecks the exact provider tarball before any registry write. A re-signed release has different bytes; preserve the retained artifact when retrying a partially published version.
+
+In **Release publish (dsh)**, leave `cua_run_id` and `cua_run_attempt` empty to build a new helper. To reuse an existing artifact, set `cua_run_id` to a run of **Package CUA helper · macOS** or **Release publish (dsh)** in this repository. `cua_run_attempt` selects an exact attempt; empty selects the latest attempt once. The selected attempt must have completed with a successful CUA packaging job and an unexpired artifact; a later npm publication failure does not invalidate that job. Failed packaging, missing or expired artifacts fail without choosing an older attempt. The hosted pack job downloads the selected artifact by ID, then applies the same source commit, product version, architecture and file-integrity checks as a fresh build. This does not support reuse across commits or product versions and does not contact the Mac runner. Artifacts are retained for 14 days.
+
+If npm publication fails after uploading some packages, rerun only the **Publish to npm** job while its `dsh-npm-tarballs` artifact is retained (7 days). It reuses the exact tarballs without rebuilding or signing; already published identical bytes are skipped. Do not rerun all jobs for that retry. If a new dispatch must repack the same commit and version, copy the original `cua_run_id` and `cua_run_attempt` from the pack job summary so the signed helper bytes stay unchanged. Matching commit and version alone do not make a newly signed helper byte-identical. If original artifacts are unavailable or any rebuilt package differs, stop: an existing npm version cannot be replaced with different content.
+
+Startup errors retain their code and message through an owner-only, per-attempt failure file and the launcher’s JSON error frame. Launch-lock and readiness waits share one deadline; operating-system launch time consumes that budget. Readiness must name the newly launched PID. A failed new instance is force-terminated and awaited before the launcher reports failure; this cleanup has a separate bound equal to the startup timeout. Existing shared services are not terminated by a failed attaching launcher.
+
+The application icon is generated from the [Computer Use artwork](../../cua-bundle/icon.svg) with `pnpm --dir packages/experimental/cua-macos run build:icon`. System permission prompts and the DSH permission page use this application icon.
 
 The shared service uses an owner-only Unix socket under `/tmp/dsh-cua-<uid>`, keyed by the executable SHA-256. A version lock elects one process; an additional real-executable-path lock excludes a different build at the same path. The first frame is protocol-1 `hello` with the runtime key and this connection’s byte, AX, operation, screenshot, event-spacing and cleanup limits. `ready` reports the verified runtime key, PID and instance ID. Every connection owns an independent AXWorker. The stdin/stdout entry is a diagnostic proxy to this service.
 
@@ -77,7 +91,7 @@ Capture and pointer delivery read CG bounds before and after an exact-window AX
 
 `typeText` and `pressKey` target the selected process's current focused control, not an exact window. Key chords send PID-targeted modifier transitions before the base key and release modifiers in reverse order; these events do not use the global HID queue. Background pointer actions may change that keyboard focus. Keypad names such as KP_0 and KP_Enter preserve their physical key codes. Text injection sends Unicode characters individually and does not use the clipboard. LF, CR and CRLF send one Return; tabs send Tab. Applications apply their normal editing behavior, including indentation and focus navigation. Each down/up event is followed by the configured text interval; dispatch completion does not confirm that the receiving application consumed every event. Cancellation can interrupt text or a gesture after partial input; it cannot undo received events. Very long text can exceed the host's operation deadline. Validate observed application state before deciding how to continue.
 
-The responsible host/helper needs macOS Accessibility permission for AX state and input, and Screen Recording permission for screenshots. Capability preflight and permission errors do not grant permissions. Capture refuses a window that moves or resizes while the image is being read. Unassociated system panels and accessory-only applications are not selectable.
+`DSH Computer Use.app` needs macOS Accessibility permission for AX state and input, and Screen Recording permission for screenshots. Capability preflight and permission errors do not grant permissions. Capture refuses a window that moves or resizes while the image is being read. Unassociated system panels and accessory-only applications are not selectable.
 
 Host-only permission controls are `permissionStatus {}`, `requestPermission {permission}`, and `openPermissionSettings {permission}`, where permission is `accessibility` or `screenRecording`. They are excluded from model tools and from `getCapabilities.methods`. Permission status includes observed helper/parent process paths; these paths do not identify the TCC responsible application. The operating-system prompt names the application and asks for the user’s decision. The helper identifies the responsible process with the optional libSystem SPI `responsibility_get_pid_responsible_for_pid`, then captures its application name and icon before publishing readiness. The function is resolved dynamically, following the same signature used by [Chromium](https://chromium.googlesource.com/chromium/src/+/refs/tags/134.0.6998.28/base/process/process_info_mac.mm). If the symbol, process, or application metadata is unavailable, attribution stays unknown; it is not inferred from the nearest GUI ancestor. Permission checks remain independent of this metadata.
 
@@ -101,13 +115,17 @@ Request modifier arrays accept command/control/option/shift/fn. The object API n
 <a id="verification"></a>
 ## Verification
 
-Use `python3 packages/experimental/cua-macos/native/tests/test_swift.py` for offline unit checks with the selected Apple toolchain’s Swift Testing framework/runtime paths and `python3 packages/experimental/cua-macos/native/tests/protocol_e2e.py` for JSONL admission, ordered replies and EOF shutdown without desktop operations. Application and protocol e2e checks accept `--helper` to select a separately built comparison binary.
+Desktop checks require grants for `DSH Computer Use.app`; source rebuilds with ad-hoc signatures can require authorization again. `--helper` names the executable inside that application. Bare executables are supported only as old-version comparison inputs, not as current helper overrides.
 
-Run `python3 packages/experimental/cua-macos/native/tests/shared_helper_e2e.py --helper /absolute/helper` to verify concurrent startup, a shared service PID, independent handles, same-application handoff, request-local screenshot deadlines, connection cleanup and signal shutdown with an owned AppKit fixture. Existing Accessibility and Screen Recording grants are required. `--without-desktop` limits the check to protocol and process lifetime.
+Run `python3 packages/experimental/cua-macos/native/tests/startup_e2e.py` to check immediate exit, typed startup errors, stale readiness rejection and termination of stalled new instances through LaunchServices. It uses owned applications and requests no system permissions. Publication unit tests mock signing; `build:native` invokes real `codesign --verify --strict`, and `launcher_identity_e2e.py` verifies LaunchServices attribution.
+
+Use `python3 packages/experimental/cua-macos/native/tests/test_swift.py` for offline unit checks with the selected Apple toolchain’s Swift Testing framework/runtime paths and `python3 packages/experimental/cua-macos/native/tests/protocol_e2e.py` for JSONL admission, ordered replies and EOF shutdown without desktop operations. Application and protocol e2e checks accept `--helper` to select a separately built comparison binary. `python3 packages/experimental/cua-macos/native/tests/test_build_app.py` covers application publication, signing failure and corrupted-generation rejection.
+
+Run `python3 packages/experimental/cua-macos/native/tests/shared_helper_e2e.py --helper /absolute/helper` to verify concurrent startup, a shared service PID, independent handles, same-application handoff, request-local screenshot deadlines, connection cleanup and signal shutdown with an owned AppKit fixture. Existing Accessibility and Screen Recording grants for `DSH Computer Use.app` are required. `--without-desktop` limits the check to protocol and process lifetime.
 
 Run `python3 packages/experimental/cua-macos/native/tests/application_consent_e2e.py --helper /absolute/helper` in an unlocked macOS GUI session with the Apple Swift compiler available. It owns and cleans up its AppKit bundles and standalone GUI processes, checks metadata replacement, cold and direct launches, shared bundle IDs, persistent path identity across standalone restarts, and selection after a running executable is deleted. The default identity check requires no Accessibility or Screen Recording grants. Add `--desktop` to read intact fixtures’ controls, verify AX button presses in their state files, capture their windows, and record observation results after executable deletion; this requires existing grants for both permissions.
 
-Run `python3 packages/experimental/cua-macos/native/tests/launcher_identity_e2e.py --helper /absolute/helper` in a GUI login session to verify a Launch Services application that starts a nested GUI launcher and then the helper. The helper identifies the outer responsible application and retains its name and icon after the launchers exit. This check owns both applications and the helper, cleans up its Launch Services registrations, and does not request Accessibility or Screen Recording access.
+Run `python3 packages/experimental/cua-macos/native/tests/launcher_identity_e2e.py` in a GUI login session to verify that the helper owns its permission identity even when started through two nested GUI launchers. Concurrent connections report the same helper name and icon. The check owns its applications, cleans up LaunchServices registrations, and requests no Accessibility or Screen Recording access.
 
 Run `python3 packages/experimental/cua-macos/native/tests/axless_e2e.py` after building and unlocking the Mac to verify an owned window whose application removes and later restores its AX roots. The check requires existing Accessibility/Screen Recording grants, rejects stale element indices, captures the AXless window, verifies a coordinate click in the fixture state file, and checks restoration. It never changes system permission settings.
 
diff --git a/packages/experimental/cua-macos/native/README.zh.md b/packages/experimental/cua-macos/native/README.zh.md
index a276730559..d7473d91b0 100644
--- a/packages/experimental/cua-macos/native/README.zh.md
+++ b/packages/experimental/cua-macos/native/README.zh.md
@@ -23,7 +23,21 @@ kind: "package-reference"
 <a id="build-and-service"></a>
 ## 构建与服务
 
-使用 `swift build --package-path packages/experimental/cua-macos/native --configuration release` 构建。二进制位于本目录下的 `.build/release/dsh-cua-native`。Host 将 `--ensure-shared` 作为受管启动命令运行，服务进程随后归属于已连接的客户端，最后一条连接完成清理后退出。`.build/` 不提交到仓库。
+运行 `pnpm --dir packages/experimental/cua-macos run build:native`，在 `native/bin/darwin-<arch>` 下生成带签名的 `DSH Computer Use.app`，`current.json` 选择完整的内容摘要目录。默认使用临时签名；正式打包可传入 `--identity` 指定 Developer ID，并由发布流程完成公证。Host 运行应用内的 `--ensure-shared` 入口，经 LaunchServices 后台启动服务。最后一条连接完成清理后，服务退出。
+
+`native/.build/prepared/<arch>` 和 `native/bin/darwin-<arch>` 中的各代应用不会自动清理。正式打包时使用全新的 `--output-directory`，或确认没有客户端使用后清理打包输出再构建，避免旧应用进入 tarball。安全签名时间戳可能让相同源码生成不同代应用。
+
+手动工作流 **Package CUA helper · macOS** 的[配置](../../../../.github/workflows/cua-helper-package.yml)在 `dsh-mac-package-trial` 构建两种架构。选择可信的 `source_ref` 和机器 `preset`；凭据沿用[macOS 打包配置](../../../../apps/desktop/packaging/README.zh.md#macos-actions)。打包无需 macOS 桌面登录或 Rosetta。在仓库根目录运行 `pnpm exec tsx scripts/cua-helper/package.ts --out <new-directory>` 可执行相同准备。完整应用签名、公证和贴票后才确定最终内容摘要，再从解包后的 `cua-helper.tgz` 验证架构、签名、票据、Gatekeeper 和文件完整性。打包不启动 helper。在已登录的桌面会话中单独运行 `python3 scripts/cua-helper/smoke.py <helper-executable>` 检查能力、helper 身份和退出清理；Apple Silicon 上执行 x64 版本需要 Rosetta。该检查不申请权限或观察应用。命令失败、超时或启动回复无法解析时，会输出捕获的 stdout 和 stderr；无效编码只在诊断文本中替换，协议解析仍严格校验。打包成功不代表运行验收通过。
+
+工作流保留 `cua-helper.tgz` 和 `cua-helper.json`，后者记录产品版本、源码 commit、Team ID 和两份应用摘要。[Release publish](../../../../.github/workflows/release-publish.yml)在生成 provider 的 npm 包前接入该产物；普通 PR 发布检查不使用签名凭据。准备步骤拒绝源码或版本不匹配、架构不全、旧应用目录、链接、字节变化和执行权限缺失。npm 发布在写入注册表前重新检查实际 provider tarball。重新签名会改变产物字节，重试部分发布的版本时需保留原产物。
+
+在 **Release publish (dsh)** 中，`cua_run_id` 和 `cua_run_attempt` 都留空时重新构建 helper。复用已有产物时，将 `cua_run_id` 填为本仓库 **Package CUA helper · macOS** 或 **Release publish (dsh)** 的运行 ID。`cua_run_attempt` 指定准确的 attempt；留空时选定最新一次。所选 attempt 必须已结束，CUA 打包 job 成功，且产物未过期；后续 npm 发布失败不影响该打包 job 的结果。打包失败、产物缺失或过期时直接失败，不选择更早的 attempt。托管 runner 上的 pack job 按产物 ID 下载，再执行与新构建相同的源码 commit、产品版本、架构及文件完整性校验。此方式不支持跨 commit 或产品版本复用，也不访问 Mac runner。产物保留 14 天。
+
+npm 发布在上传部分包后失败时，只重跑 **Publish to npm** job，复用仍在保留期内的 `dsh-npm-tarballs`（7 天）。该 job 不构建或签名，直接复用原 tarball；已发布且字节相同的包会被跳过。此次重试不要重跑全部 job。若必须新建发布运行，以同一 commit 和版本重新打包，应从 pack job 的摘要复制原 `cua_run_id` 和 `cua_run_attempt`，保持已签名 helper 的字节不变。commit 和版本一致不代表重新签名后字节也相同。原产物不可用或任何重新打包的内容不同时，应停止发布；不能用不同内容替换已有 npm 版本。
+
+启动错误通过当前用户专用、每次启动独立的错误文件和 launcher 的 JSON 错误帧保留错误码与消息。等待启动锁和就绪状态共用一个期限，系统启动应用的耗时计入该预算。就绪记录必须指向本次启动的 PID。新实例启动失败后，launcher 强制终止并等待其退出，再报告失败；清理另有与启动超时等长的期限。连接已有服务失败时不会终止该服务。
+
+应用图标通过 `pnpm --dir packages/experimental/cua-macos run build:icon` 从 [Computer Use 图形](../../cua-bundle/icon.svg)生成。系统授权提示和 DSH 权限页使用这个应用图标。
 
 共享服务在 `/tmp/dsh-cua-<uid>` 下使用仅所有者可访问的 Unix socket，以可执行文件的 SHA-256 区分实例。版本锁选出一个进程，另一个真实可执行路径锁排除同一路径的不同构建。首帧为协议版本 1 的 `hello`，包含运行时标识以及该连接的字节、AX、操作、截图、事件间隔和清理限制。`ready` 返回已核实的运行时标识、PID 和实例 ID。每条连接拥有独立的 AXWorker。stdin/stdout 入口是该服务的诊断代理。
 
@@ -77,7 +91,7 @@ AppKit 在主事件循环上运行。阻塞式 socket 接收与握手使用后
 
 `typeText` 和 `pressKey` 面向所选进程当前获得焦点的控件，不指定窗口。组合键先向 PID 发送修饰键变化，再发送主键，并逆序释放修饰键，不使用全局 HID 队列。后台鼠标操作可能改变键盘焦点。KP_0 和 KP_Enter 等数字键盘名称保留物理键码。文本逐个 Unicode 字符输入，不使用剪贴板。LF、CR 和 CRLF 发送一次 Return，制表符发送 Tab。应用保留缩进和焦点导航等正常编辑行为。每次按下和抬起后等待配置的文本事件间隔，分派完成不证明应用已消费全部事件。取消可能中断部分文本或手势，无法撤销已接收事件。很长的文本可能超过 Host 操作期限。继续输入前应核实应用状态。
 
-负责执行的 host/helper 需要 macOS 辅助功能权限以读取 AX 和输入，需要屏幕录制权限以截图。能力预检和权限错误不授予权限。截图会拒绝在读取图片期间移动或缩放的窗口。无法确认归属的系统面板及仅后台辅助类型的应用不可选择。
+`DSH Computer Use.app` 需要 macOS 辅助功能权限以读取 AX 和输入，需要屏幕录制权限以截图。能力预检和权限错误不授予权限。截图会拒绝在读取图片期间移动或缩放的窗口。无法确认归属的系统面板及仅后台辅助类型的应用不可选择。
 
 仅供 Host 使用的权限操作为 `permissionStatus {}`、`requestPermission {permission}` 和 `openPermissionSettings {permission}`，其中 permission 为 `accessibility` 或 `screenRecording`。这些操作不出现在模型工具及 `getCapabilities.methods` 中。权限状态包含观察到的 helper 和父进程路径，这些路径不能确定 TCC 归属的应用。系统授权提示负责指出应用并询问用户决定。helper 使用可选的 libSystem 内部接口 `responsibility_get_pid_responsible_for_pid` 查询责任进程，在报告就绪前记录对应应用的名称和图标。接口通过动态加载解析，函数签名与 [Chromium](https://chromium.googlesource.com/chromium/src/+/refs/tags/134.0.6998.28/base/process/process_info_mac.mm) 使用的一致。符号、进程或应用信息不可用时，归属保持未知，不根据最近的 GUI 祖先推断。权限检查独立于这些信息。
 
@@ -101,13 +115,17 @@ AppKit 在主事件循环上运行。阻塞式 socket 接收与握手使用后
 <a id="verification"></a>
 ## 验证
 
-使用 `python3 packages/experimental/cua-macos/native/tests/test_swift.py` 通过选定 Apple 工具链的 Swift Testing 框架和运行时路径执行离线单元检查；使用 `python3 packages/experimental/cua-macos/native/tests/protocol_e2e.py` 检查 JSONL 接纳、有序回复和 EOF 退出，不执行桌面操作。应用与协议端到端检查接受 `--helper` 以选择单独构建的对比二进制。
+桌面检查要求给 `DSH Computer Use.app` 授权；临时签名的源码构建变化后可能需要重新授权。`--helper` 指向该应用内的可执行文件。裸二进制仅用于旧版本对比，不支持作为当前 helper 的覆盖路径。
 
-运行 `python3 packages/experimental/cua-macos/native/tests/shared_helper_e2e.py --helper /absolute/helper`，通过测试自建的 AppKit fixture 核实并发启动、共享服务 PID、独立句柄、同一应用交接、请求级截图期限、连接清理和信号退出。需要已有辅助功能和屏幕录制权限。`--without-desktop` 将检查限定为协议与进程生命期。
+运行 `python3 packages/experimental/cua-macos/native/tests/startup_e2e.py`，通过 LaunchServices 检查启动即退出、原始错误传递、过期就绪记录拒绝，以及卡住的新实例退出。检查使用自建应用，不申请系统权限。发布单元测试模拟签名；`build:native` 调用真实的 `codesign --verify --strict`，`launcher_identity_e2e.py` 验证 LaunchServices 授权归属。
+
+使用 `python3 packages/experimental/cua-macos/native/tests/test_swift.py` 通过选定 Apple 工具链的 Swift Testing 框架和运行时路径执行离线单元检查；使用 `python3 packages/experimental/cua-macos/native/tests/protocol_e2e.py` 检查 JSONL 接纳、有序回复和 EOF 退出，不执行桌面操作。应用与协议端到端检查接受 `--helper` 以选择单独构建的对比二进制。 `python3 packages/experimental/cua-macos/native/tests/test_build_app.py` 验证应用发布、签名失败和损坏副本拒绝。
+
+运行 `python3 packages/experimental/cua-macos/native/tests/shared_helper_e2e.py --helper /absolute/helper`，通过测试自建的 AppKit fixture 核实并发启动、共享服务 PID、独立句柄、同一应用交接、请求级截图期限、连接清理和信号退出。需要已经给 `DSH Computer Use.app` 授予辅助功能和屏幕录制权限。`--without-desktop` 将检查限定为协议与进程生命期。
 
 在已解锁的 macOS GUI 会话中运行 `python3 packages/experimental/cua-macos/native/tests/application_consent_e2e.py --helper /absolute/helper`，需要可用的 Apple Swift 编译器。它创建并清理自己的 AppKit 应用和独立 GUI 进程，检查元数据替换、冷启动与直接启动、共用 Bundle ID、独立程序重启后的持久路径身份，以及删除运行中可执行文件后的选择行为。默认身份检查不需要辅助功能或屏幕录制权限。添加 `--desktop` 可读取完整测试应用的控件，通过状态文件验证 AX 按钮点击，截取窗口，并记录删除可执行文件后的观察结果；此模式要求已有两项系统权限。
 
-在 GUI 登录会话中运行 `python3 packages/experimental/cua-macos/native/tests/launcher_identity_e2e.py --helper /absolute/helper`，验证由 Launch Services 启动的应用先启动另一个 GUI 启动器，再启动 helper。helper 识别外层责任应用，并在启动器退出后保留其名称和图标。检查只使用测试自建的两个应用和 helper，结束后清理对应的 Launch Services 注册，不申请辅助功能或屏幕录制权限。
+在 GUI 登录会话中运行 `python3 packages/experimental/cua-macos/native/tests/launcher_identity_e2e.py`，验证两个嵌套 GUI 启动器启动 helper 后，授权归属仍为 helper 自己，多条连接得到相同名称和图标。检查自行创建应用并清理 LaunchServices 注册，不申请辅助功能或屏幕录制权限。
 
 构建并解锁 Mac 后运行 `python3 packages/experimental/cua-macos/native/tests/axless_e2e.py`，验证应用移除并恢复 AX 根节点的窗口。检查需要已有辅助功能/屏幕录制权限，会拒绝过期元素索引，捕获无 AX 窗口，通过 fixture 状态文件核实坐标点击，并检查恢复。不会修改系统权限设置。
 
diff --git a/packages/experimental/cua-macos/native/Sources/CuaNative/Main.swift b/packages/experimental/cua-macos/native/Sources/CuaNative/Main.swift
index 174da12742..ec0586fe2f 100644
--- a/packages/experimental/cua-macos/native/Sources/CuaNative/Main.swift
+++ b/packages/experimental/cua-macos/native/Sources/CuaNative/Main.swift
@@ -1,37 +1,50 @@
-// Only server mode owns AppKit; launcher and stdio clients connect to its socket.
+// Server mode owns the AppKit event loop; launchers use NSWorkspace and clients use the service socket.
 import AppKit
 import Foundation
 import Darwin
+import Dispatch
 
 @main enum CuaNativeMain {
     @MainActor static func main() {
-        do {
-            let arguments = Array(CommandLine.arguments.dropFirst())
-            if arguments.first == "--ensure-shared" {
-                try SharedHelperLauncher.ensure(SharedHelperOptions(arguments: arguments))
-                return
-            }
-            if arguments.first == "--serve" {
-                guard setsid() >= 0 else { throw SharedSocket.failure("Creating shared helper session") }
+        let arguments = Array(CommandLine.arguments.dropFirst())
+        if arguments.first == "--serve" {
+            do {
                 let options = try SharedHelperOptions(arguments: arguments)
-                let app = NSApplication.shared
-                app.setActivationPolicy(.prohibited)
-                guard let server = try SharedHelperServer(options: options) else { return }
-                try server.start()
-                withExtendedLifetime(server) { app.run() }
-                return
-            }
-            let configuration = try HelperConfiguration(arguments: arguments)
-            try SharedHelperProxy.run(configuration: configuration)
-        } catch {
-            let diagnostic = (error as? NativeFailure)?.message ?? error.localizedDescription
-            if CommandLine.arguments.dropFirst().first == "--serve" {
-                let failure = JSONValue.object(["type": .string("error"), "code": .string((error as? NativeFailure)?.code ?? "NATIVE_STARTUP"),
-                                                "message": .string(diagnostic)])
-                if let data = try? JSONEncoder().encode(failure) { try? FileHandle.standardOutput.write(contentsOf: data + Data([10])) }
-            }
-            if let data = "dsh-cua-native: \(diagnostic)\n".data(using: .utf8) { try? FileHandle.standardError.write(contentsOf: data) }
-            exit(1)
+                do {
+                    let app = NSApplication.shared
+                    app.setActivationPolicy(.prohibited)
+                    guard let server = try SharedHelperServer(options: options) else { return }
+                    try server.start()
+                    withExtendedLifetime(server) { app.run() }
+                } catch {
+                    do { try options.recordStartupFailure(error) }
+                    catch { fputs("dsh-cua-native: could not record startup failure: \(error)\n", stderr) }
+                    fail(error)
+                }
+            } catch { fail(error) }
+            return
         }
+        Task { @MainActor in
+            do {
+                if arguments.first == "--ensure-shared" {
+                    try await SharedHelperLauncher.ensure(SharedHelperOptions(arguments: arguments))
+                } else {
+                    try await SharedHelperProxy.run(configuration: HelperConfiguration(arguments: arguments))
+                }
+                exit(0)
+            } catch { fail(error) }
+        }
+        dispatchMain()
+    }
+
+    private static func fail(_ error: Error) -> Never {
+        let diagnostic = (error as? NativeFailure)?.message ?? error.localizedDescription
+        do {
+            let failure = JSONValue.object(["type": .string("error"), "code": .string((error as? NativeFailure)?.code ?? "NATIVE_STARTUP"),
+                                            "message": .string(diagnostic)])
+            if let data = try? JSONEncoder().encode(failure) { try? FileHandle.standardOutput.write(contentsOf: data + Data([10])) }
+        }
+        if let data = "dsh-cua-native: \(diagnostic)\n".data(using: .utf8) { try? FileHandle.standardError.write(contentsOf: data) }
+        exit(1)
     }
 }
diff --git a/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperProxy.swift b/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperProxy.swift
index 071c5eecca..1013f7746f 100644
--- a/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperProxy.swift
+++ b/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperProxy.swift
@@ -3,14 +3,14 @@ import Foundation
 import CryptoKit
 import Darwin
 
-enum SharedHelperProxy {
-    static func run(configuration: HelperConfiguration) throws {
+@MainActor enum SharedHelperProxy {
+    static func run(configuration: HelperConfiguration) async throws {
         guard let executable = NativePlatform.executablePath(getpid()) else { throw SharedSocket.failure("Resolving helper executable") }
         let digest = SHA256.hash(data: try Data(contentsOf: URL(fileURLWithPath: executable), options: .mappedIfSafe))
             .map { String(format: "%02x", $0) }.joined()
         let options = try SharedHelperOptions(arguments: ["--ensure-shared", "--runtime-key", digest,
             "--runtime-directory", "/tmp/dsh-cua-\(getuid())", "--startup-timeout-ms", String(configuration.timeoutSeconds * 1000)])
-        let channel = try connect(options)
+        let channel = try await connect(options)
         defer { channel.shutdown() }
         let hello = JSONValue.object(["type": .string("hello"), "protocol": .number(1), "runtimeKey": .string(digest), "config": .object([
             "maxRequestBytes": .number(Double(configuration.maxRequestBytes)), "maxResponseBytes": .number(Double(configuration.maxResponseBytes)),
@@ -67,10 +67,10 @@ enum SharedHelperProxy {
         return true
     }
 
-    private static func connect(_ options: SharedHelperOptions) throws -> SharedSocket {
-        let started = DispatchTime.now().uptimeNanoseconds
+    private static func connect(_ options: SharedHelperOptions) async throws -> SharedSocket {
+        let deadline = options.startupDeadline()
         repeat {
-            try SharedHelperLauncher.ensure(options, publishReady: false)
+            try await SharedHelperLauncher.ensure(options, publishReady: false, deadline: deadline)
             let descriptor = socket(AF_UNIX, SOCK_STREAM, 0)
             guard descriptor >= 0 else { throw SharedSocket.failure("Creating stdio client socket") }
             let channel = SharedSocket(descriptor: descriptor)
@@ -85,7 +85,7 @@ enum SharedHelperProxy {
             let error = errno
             guard error == ENOENT || error == ECONNREFUSED else { throw SharedSocket.failure("Connecting stdio client") }
             usleep(10_000)
-        } while Double(DispatchTime.now().uptimeNanoseconds - started) / 1_000_000_000 < options.startupTimeout
+        } while DispatchTime.now().uptimeNanoseconds < deadline
         throw NativeFailure(code: "NATIVE_STARTUP_TIMEOUT", message: "Shared helper did not accept the stdio client")
     }
 
diff --git a/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperRuntime.swift b/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperRuntime.swift
index 8cb9a84b50..42c1853870 100644
--- a/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperRuntime.swift
+++ b/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperRuntime.swift
@@ -1,4 +1,5 @@
 // Version and executable-path locks outlive every client and release only at process exit.
+import AppKit
 import Foundation
 import Darwin
 import CryptoKit
@@ -7,9 +8,12 @@ struct SharedHelperOptions: Sendable {
     let runtimeKey: String
     let directory: String
     let startupTimeout: Double
+    let startupID: UUID?
+    var failurePath: String? { startupID.map { "\(directory)/\(runtimeKey).\($0.uuidString).failed" } }
     var socketPath: String { "\(directory)/\(runtimeKey).sock" }
     var readyPath: String { "\(directory)/\(runtimeKey).ready" }
     var versionLockPath: String { "\(directory)/\(runtimeKey).lock" }
+    var launchLockPath: String { "\(directory)/\(runtimeKey).launch.lock" }
 
     init(arguments: [String]) throws {
         guard let mode = arguments.first, ["--ensure-shared", "--serve"].contains(mode) else {
@@ -19,7 +23,7 @@ struct SharedHelperOptions: Sendable {
         var index = 1
         while index < arguments.count {
             let key = arguments[index]
-            guard index + 1 < arguments.count, ["--runtime-key", "--runtime-directory", "--startup-timeout-ms"].contains(key), fields[key] == nil else {
+            guard index + 1 < arguments.count, ["--runtime-key", "--runtime-directory", "--startup-timeout-ms", "--startup-id"].contains(key), fields[key] == nil else {
                 throw RequestParameters.invalid("Invalid shared helper option \(key)")
             }
             fields[key] = arguments[index + 1]
@@ -32,6 +36,12 @@ struct SharedHelperOptions: Sendable {
               timeout > 0, timeout <= Double(Int32.max) else {
             throw RequestParameters.invalid("Shared helper requires SHA-256 runtime key, absolute runtime directory and positive startup timeout")
         }
+        if let identifier = fields["--startup-id"] {
+            guard mode == "--serve", let parsed = UUID(uuidString: identifier) else {
+                throw RequestParameters.invalid("Startup identity requires a UUID in server mode")
+            }
+            startupID = parsed
+        } else { startupID = nil }
         runtimeKey = key
         self.directory = directory
         startupTimeout = timeout / 1000
@@ -63,22 +73,55 @@ struct SharedHelperOptions: Sendable {
                  "pid": .number(Double(pid)), "instanceId": .string(instanceID)])
     }
 
-    func existingReady() throws -> Data {
-        let until = DispatchTime.now().uptimeNanoseconds + UInt64(startupTimeout * 1_000_000_000)
-        repeat {
+    func startupDeadline() -> UInt64 {
+        DispatchTime.now().uptimeNanoseconds + UInt64(startupTimeout * 1_000_000_000)
+    }
+
+    func recordStartupFailure(_ error: Error) throws {
+        guard let failurePath else { return }
+        let failure = error as? NativeFailure ?? NativeFailure(code: "NATIVE_STARTUP", message: error.localizedDescription)
+        let data = try JSONEncoder().encode(JSONValue.object([
+            "type": .string("error"), "code": .string(failure.code), "message": .string(failure.message),
+        ]))
+        try data.write(to: URL(fileURLWithPath: failurePath), options: .atomic)
+        guard chmod(failurePath, 0o600) == 0 else { throw SharedSocket.failure("Protecting helper startup failure") }
+    }
+
+    static func startupFailure(at path: String?) throws -> NativeFailure? {
+        guard let path else { return nil }
+        let data: Data
+        do { data = try Data(contentsOf: URL(fileURLWithPath: path)) }
+        catch let error as NSError where error.domain == NSCocoaErrorDomain && error.code == NSFileReadNoSuchFileError { return nil }
+        let value = try JSONDecoder().decode(JSONValue.self, from: data)
+        guard value["type"] == .string("error"), let code = value["code"].string, let message = value["message"].string else {
+            throw NativeFailure(code: "NATIVE_PROTOCOL", message: "Invalid helper startup failure record at \(path)")
+        }
+        return NativeFailure(code: code, message: message)
+    }
+
+    func existingReady(deadline: UInt64, launchedPID: Int32? = nil, failurePath: String? = nil) throws -> Data {
+        while DispatchTime.now().uptimeNanoseconds < deadline {
+            if let failure = try Self.startupFailure(at: failurePath) { throw failure }
             if let data = try? Data(contentsOf: URL(fileURLWithPath: readyPath)),
                let ready = try? JSONDecoder().decode(JSONValue.self, from: data),
                ready["type"] == .string("ready"), ready["runtimeKey"] == .string(runtimeKey),
                let number = ready["pid"].number, let pid = Int32(exactly: number), pid > 0,
+               launchedPID == nil || launchedPID == pid,
                kill(pid, 0) == 0, SharedSocket.isOwnedSocket(socketPath) {
                 var line = data
                 if line.last != 10 { line.append(10) }
                 return line
             }
+            if let launchedPID, kill(launchedPID, 0) != 0 && errno == ESRCH {
+                // The server publishes its failure before exit; it may have exited after the first read.
+                if let failure = try Self.startupFailure(at: failurePath) { throw failure }
+                throw NativeFailure(code: "NATIVE_STARTUP", message: "Computer Use exited before becoming ready; retry and inspect the helper startup diagnostics")
+            }
             usleep(10_000)
-        } while DispatchTime.now().uptimeNanoseconds < until
-        throw NativeFailure(code: "NATIVE_STARTUP_TIMEOUT", message: "Existing shared helper did not become ready")
+        }
+        throw NativeFailure(code: "NATIVE_STARTUP_TIMEOUT", message: "Computer Use did not become ready within the startup deadline")
     }
+
 }
 
 final class SharedHelperLock {
@@ -227,63 +270,75 @@ final class SharedSocket: @unchecked Sendable {
     }
 }
 
-enum SharedHelperLauncher {
-    static func ensure(_ options: SharedHelperOptions, publishReady: Bool = true) throws {
+@MainActor enum SharedHelperLauncher {
+    static func ensure(_ options: SharedHelperOptions, publishReady: Bool = true, deadline suppliedDeadline: UInt64? = nil) async throws {
         try options.prepareDirectory()
+        let deadline = suppliedDeadline ?? options.startupDeadline()
+        var launchLock: SharedHelperLock?
+        repeat {
+            launchLock = try SharedHelperLock(path: options.launchLockPath)
+            if launchLock != nil { break }
+            usleep(10_000)
+        } while DispatchTime.now().uptimeNanoseconds < deadline
+        guard let launchLock else { throw NativeFailure(code: "NATIVE_STARTUP_TIMEOUT", message: "Computer Use application launch is still in progress") }
+        defer { withExtendedLifetime(launchLock) {} }
         if let lock = try SharedHelperLock(path: options.versionLockPath) {
-            // The serving process acquires its own lock after exec.
             withExtendedLifetime(lock) {}
         } else {
-            let ready = try options.existingReady()
+            let ready = try options.existingReady(deadline: deadline)
             if publishReady { try FileHandle.standardOutput.write(contentsOf: ready) }
             return
         }
-        guard let executable = NativePlatform.executablePath(getpid()) else { throw SharedSocket.failure("Resolving helper executable") }
-        var pipes: [Int32] = [0, 0]
-        guard pipe(&pipes) == 0 else { throw SharedSocket.failure("Creating helper readiness pipe") }
-        let reader = SharedSocket(descriptor: pipes[0])
-        var writeDescriptor = pipes[1]
-        defer { if writeDescriptor >= 0 { close(writeDescriptor) } }
-        var actions: posix_spawn_file_actions_t?
-        let initialized = posix_spawn_file_actions_init(&actions)
-        guard initialized == 0 else { throw NativeFailure(code: "NATIVE_STARTUP", message: "Creating helper spawn actions failed (errno \(initialized))") }
-        defer { posix_spawn_file_actions_destroy(&actions) }
-        let actionResults = [
-            posix_spawn_file_actions_addopen(&actions, STDIN_FILENO, "/dev/null", O_RDONLY, 0),
-            posix_spawn_file_actions_addopen(&actions, STDERR_FILENO, "/dev/null", O_WRONLY, 0),
-            posix_spawn_file_actions_adddup2(&actions, pipes[1], STDOUT_FILENO),
-            posix_spawn_file_actions_addclose(&actions, pipes[0]),
-            posix_spawn_file_actions_addclose(&actions, pipes[1]),
-        ]
-        if let failed = actionResults.first(where: { $0 != 0 }) {
-            throw NativeFailure(code: "NATIVE_STARTUP", message: "Configuring helper spawn actions failed (errno \(failed))")
+        let bundle = Bundle.main
+        guard bundle.bundleURL.pathExtension == "app", bundle.bundleIdentifier != nil,
+              let executable = bundle.executableURL, let processPath = NativePlatform.executablePath(getpid()),
+              executable.resolvingSymlinksInPath() == URL(fileURLWithPath: processPath).resolvingSymlinksInPath() else {
+            throw NativeFailure(code: "NATIVE_APPLICATION_REQUIRED",
+                                message: "Computer Use requires its signed application bundle; set helperPath to DSH Computer Use.app/Contents/MacOS/dsh-cua-native")
         }
-        let arguments = [executable, "--serve", "--runtime-key", options.runtimeKey, "--runtime-directory", options.directory,
-                         "--startup-timeout-ms", String(options.startupTimeout * 1000)]
-        let argv = arguments.map { strdup($0) } + [nil]
-        let environment = ProcessInfo.processInfo.environment.map { strdup("\($0.key)=\($0.value)") } + [nil]
-        defer { argv.forEach { free($0) }; environment.forEach { free($0) } }
-        var pid: pid_t = 0
-        let status = argv.withUnsafeBufferPointer { args in
-            environment.withUnsafeBufferPointer { env in
-                posix_spawn(&pid, executable, &actions, nil, UnsafeMutablePointer(mutating: args.baseAddress!), UnsafeMutablePointer(mutating: env.baseAddress!))
-            }
+        let configuration = NSWorkspace.OpenConfiguration()
+        configuration.activates = false
+        configuration.addsToRecentItems = false
+        configuration.createsNewApplicationInstance = true
+        configuration.allowsRunningApplicationSubstitution = false
+        let startupID = UUID()
+        let failurePath = "\(options.directory)/\(options.runtimeKey).\(startupID.uuidString).failed"
+        defer { unlink(failurePath) }
+        configuration.arguments = ["--serve", "--startup-id", startupID.uuidString, "--runtime-key", options.runtimeKey,
+                                   "--runtime-directory", options.directory,
+                                   "--startup-timeout-ms", String(options.startupTimeout * 1000)]
+        guard DispatchTime.now().uptimeNanoseconds < deadline else {
+            throw NativeFailure(code: "NATIVE_STARTUP_TIMEOUT", message: "Computer Use launch lock exhausted the startup deadline")
         }
-        close(pipes[1])
-        writeDescriptor = -1
-        guard status == 0 else { throw NativeFailure(code: "NATIVE_STARTUP", message: "Starting shared helper failed (errno \(status))") }
+        // LaunchServices gives the application its own TCC identity; direct spawning inherits the terminal's.
+        let application: NSRunningApplication
+        do { application = try await NSWorkspace.shared.openApplication(at: bundle.bundleURL, configuration: configuration) }
+        catch {
+            if let failure = try SharedHelperOptions.startupFailure(at: failurePath) { throw failure }
+            throw NativeFailure(code: "NATIVE_STARTUP", message: "macOS could not launch Computer Use at \(bundle.bundleURL.path): \(error.localizedDescription)")
+        }
+        let pid = application.processIdentifier
+        guard pid > 0 else {
+            if let failure = try SharedHelperOptions.startupFailure(at: failurePath) { throw failure }
+            throw NativeFailure(code: "NATIVE_STARTUP", message: "macOS did not return a live Computer Use process")
+        }
+        let ready: Data
         do {
-            let line = try reader.readHello(timeout: options.startupTimeout)
-            let response = try JSONDecoder().decode(JSONValue.self, from: line)
-            guard response["type"] == .string("ready") else {
-                throw NativeFailure(code: response["code"].string ?? "NATIVE_STARTUP", message: response["message"].string ?? "Shared helper startup failed")
-            }
-            if publishReady { try FileHandle.standardOutput.write(contentsOf: line + Data([10])) }
+            ready = try options.existingReady(deadline: deadline, launchedPID: pid, failurePath: failurePath)
         } catch {
-            // This PID is the child this launcher created; unrelated owners are never signalled.
-            kill(pid, SIGKILL)
-            while waitpid(pid, nil, 0) < 0 && errno == EINTR {}
+            // A failed launch owns this new instance; existing shared services never enter this path.
+            if kill(pid, 0) == 0 {
+                guard application.forceTerminate() || (kill(pid, 0) != 0 && errno == ESRCH) else {
+                    throw NativeFailure(code: "NATIVE_CLEANUP", message: "Computer Use startup failed (\(error)); macOS refused to stop helper PID \(pid)")
+                }
+                let cleanupDeadline = options.startupDeadline()
+                while kill(pid, 0) == 0 && DispatchTime.now().uptimeNanoseconds < cleanupDeadline { usleep(10_000) }
+                guard kill(pid, 0) != 0 && errno == ESRCH else {
+                    throw NativeFailure(code: "NATIVE_CLEANUP", message: "Computer Use startup failed (\(error)); helper PID \(pid) has not exited")
+                }
+            }
             throw error
         }
+        if publishReady { try FileHandle.standardOutput.write(contentsOf: ready) }
     }
 }
diff --git a/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperServer.swift b/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperServer.swift
index 253dbfcaa4..c227d55ac2 100644
--- a/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperServer.swift
+++ b/packages/experimental/cua-macos/native/Sources/CuaNative/SharedHelperServer.swift
@@ -109,7 +109,7 @@ private func acceptConnections(listener: SharedSocket, lifetime: SharedHelperLif
         lifetime = SharedHelperLifetime(startupTimeout: options.startupTimeout)
         try options.prepareDirectory()
         guard let versionLock = try SharedHelperLock(path: options.versionLockPath) else {
-            try FileHandle.standardOutput.write(contentsOf: options.existingReady())
+            try FileHandle.standardOutput.write(contentsOf: options.existingReady(deadline: options.startupDeadline()))
             return nil
         }
         self.versionLock = versionLock
diff --git a/packages/experimental/cua-macos/native/build_app.py b/packages/experimental/cua-macos/native/build_app.py
new file mode 100644
index 0000000000..cd27ce2d88
--- /dev/null
+++ b/packages/experimental/cua-macos/native/build_app.py
@@ -0,0 +1,85 @@
+"""Build, sign and publish immutable Computer Use application generations."""
+import argparse
+import hashlib
+import json
+import os
+from pathlib import Path
+import platform
+import shutil
+import subprocess
+import tempfile
+
+
+def bundle_digest(application):
+    """Hash bundle membership and bytes; generated bundles contain only regular files."""
+    if application.is_symlink() or not application.is_dir():
+        raise ValueError(f"Helper application is not a real directory: {application}")
+    digest = hashlib.sha256()
+    for path in sorted(application.rglob("*")):
+        if path.is_symlink():
+            raise ValueError(f"Helper application contains a symbolic link: {path}")
+        if path.is_file():
+            digest.update(path.relative_to(application).as_posix().encode() + b"\0")
+            digest.update(hashlib.sha256(path.read_bytes()).digest())
+            digest.update(bytes([bool(path.stat().st_mode & 0o111)]))
+        elif not path.is_dir():
+            raise ValueError(f"Helper application contains a non-regular entry: {path}")
+    return digest.hexdigest()
+
+
+def publish(binary, output, identity, plist):
+    """Publish a complete signed bundle before atomically selecting its generation."""
+    output.mkdir(parents=True, exist_ok=True)
+    with tempfile.TemporaryDirectory(prefix=".prepare-", dir=output) as temporary:
+        staged = Path(temporary) / "DSH Computer Use.app"
+        executable = staged / "Contents/MacOS/dsh-cua-native"
+        executable.parent.mkdir(parents=True)
+        shutil.copy2(binary, executable)
+        shutil.copy2(plist, staged / "Contents/Info.plist")
+        resources = staged / "Contents/Resources"
+        resources.mkdir()
+        for filename in ["DSHComputerUse.icns", "LICENSE.computer-use-icon", "LICENSE.cua-driver"]:
+            shutil.copy2(plist.with_name(filename), resources / filename)
+        subprocess.run(["/usr/bin/codesign", "--force", "--sign", identity, "--options", "runtime",
+                        "--timestamp=none" if identity == "-" else "--timestamp", str(staged)], check=True)
+        subprocess.run(["/usr/bin/codesign", "--verify", "--strict", str(staged)], check=True)
+        key = bundle_digest(staged)
+        generation = output / key
+        application = generation / staged.name
+        if application.exists():
+            if bundle_digest(application) != key:
+                raise ValueError(f"Retained helper application does not match its content digest: {application}")
+        else:
+            generation.mkdir(exist_ok=True)
+            try:
+                staged.rename(application)
+            except OSError:
+                # Independent packagers can publish the same immutable generation.
+                if not application.is_dir() or bundle_digest(application) != key:
+                    raise
+        receipt = Path(temporary) / "current.json"
+        receipt.write_text(json.dumps({"bundle": key}) + "\n")
+        os.replace(receipt, output / "current.json")
+        return application / "Contents/MacOS/dsh-cua-native"
+
+
+def main():
+    root = Path(__file__).resolve().parent
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--arch", choices=["arm64", "x86_64"], default=platform.machine())
+    parser.add_argument("--scratch-path", type=Path)
+    parser.add_argument("--output-directory", type=Path)
+    parser.add_argument("--identity", default="-", help="codesign identity; '-' produces a local ad-hoc build")
+    args = parser.parse_args()
+    architecture = "x64" if args.arch == "x86_64" else "arm64"
+    scratch = args.scratch_path or root / ".build" / f"runtime-{architecture}"
+    output = args.output_directory or root / "bin" / f"darwin-{architecture}"
+    subprocess.run(["/usr/bin/xcrun", "swift", "build", "--package-path", str(root),
+                    "--scratch-path", str(scratch), "--configuration", "release",
+                    "--product", "dsh-cua-native", "--arch", args.arch], check=True)
+    executable = publish(scratch / "release/dsh-cua-native", output, args.identity, root / "Info.plist")
+    print(executable)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/packages/experimental/cua-macos/native/generate_icon.mjs b/packages/experimental/cua-macos/native/generate_icon.mjs
new file mode 100644
index 0000000000..dbcd6e7c65
--- /dev/null
+++ b/packages/experimental/cua-macos/native/generate_icon.mjs
@@ -0,0 +1,27 @@
+/** Generate the macOS helper icon from the existing Computer Use bundle artwork. */
+import { execFileSync } from 'node:child_process'
+import { mkdtemp, mkdir, readFile, rm } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { dirname, join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import sharp from 'sharp'
+
+async function main() {
+  const root = dirname(fileURLToPath(import.meta.url))
+  const scratch = await mkdtemp(join(tmpdir(), 'dsh-cua-icon-'))
+  try {
+    const iconset = join(scratch, 'DSHComputerUse.iconset')
+    await mkdir(iconset)
+    const source = await readFile(join(root, '../../cua-bundle/icon.svg'))
+    for (const points of [16, 32, 128, 256, 512]) {
+      for (const scale of [1, 2]) {
+        const pixels = points * scale
+        await sharp(source, { density: pixels * 2 }).resize(pixels, pixels).png()
+          .toFile(join(iconset, `icon_${points}x${points}${scale === 2 ? '@2x' : ''}.png`))
+      }
+    }
+    execFileSync('/usr/bin/iconutil', ['--convert', 'icns', '--output', join(root, 'DSHComputerUse.icns'), iconset], { stdio: 'inherit' })
+  } finally { await rm(scratch, { recursive: true, force: true }) }
+}
+
+main().catch(error => { console.error(error); process.exitCode = 1 })
diff --git a/packages/experimental/cua-macos/native/tests/StartupFixture.swift b/packages/experimental/cua-macos/native/tests/StartupFixture.swift
new file mode 100644
index 0000000000..0e298af3a2
--- /dev/null
+++ b/packages/experimental/cua-macos/native/tests/StartupFixture.swift
@@ -0,0 +1,48 @@
+// Exercise the production launcher against an application that exits or stalls before readiness.
+import AppKit
+import Foundation
+import Darwin
+
+// The fixture only supplies the launcher's two unrelated parameter/path dependencies.
+enum RequestParameters {
+    static func invalid(_ message: String) -> NativeFailure { NativeFailure(code: "INVALID_ARGUMENT", message: message) }
+}
+enum NativePlatform {
+    static func executablePath(_ pid: Int32) -> String? {
+        var buffer = [CChar](repeating: 0, count: Int(MAXPATHLEN) * 4)
+        guard proc_pidpath(pid, &buffer, UInt32(buffer.count)) > 0 else { return nil }
+        return String(decoding: buffer.prefix { $0 != 0 }.map { UInt8(bitPattern: $0) }, as: UTF8.self)
+    }
+}
+
+@main enum StartupFixture {
+    @MainActor static func main() {
+        let arguments = Array(CommandLine.arguments.dropFirst())
+        if arguments.first == "--serve" {
+            let root = Bundle.main.bundleURL.deletingLastPathComponent()
+            do {
+                let app = NSApplication.shared
+                app.setActivationPolicy(.prohibited)
+                app.finishLaunching()
+                try String(getpid()).write(to: root.appendingPathComponent("served.pid"), atomically: true, encoding: .utf8)
+                let mode = try String(contentsOf: root.appendingPathComponent("mode"), encoding: .utf8)
+                if mode == "exit" { _exit(42) }
+                while true { pause() }
+            } catch { exit(1) }
+        }
+        Task { @MainActor in
+            do {
+                try await SharedHelperLauncher.ensure(SharedHelperOptions(arguments: arguments))
+                exit(0)
+            } catch {
+                let failure = error as? NativeFailure ?? NativeFailure(code: "NATIVE_STARTUP", message: error.localizedDescription)
+                let data = try JSONEncoder().encode(JSONValue.object([
+                    "type": .string("error"), "code": .string(failure.code), "message": .string(failure.message),
+                ]))
+                try FileHandle.standardOutput.write(contentsOf: data + Data([10]))
+                exit(1)
+            }
+        }
+        dispatchMain()
+    }
+}
diff --git a/packages/experimental/cua-macos/native/tests/blender_keyboard_e2e.py b/packages/experimental/cua-macos/native/tests/blender_keyboard_e2e.py
index 755fcf7f82..4993d8ab5c 100644
--- a/packages/experimental/cua-macos/native/tests/blender_keyboard_e2e.py
+++ b/packages/experimental/cua-macos/native/tests/blender_keyboard_e2e.py
@@ -275,7 +275,7 @@ def main():
     args = parser.parse_args()
     if os.uname().sysname != "Darwin":
         raise RuntimeError("This opt-in check requires macOS")
-    args.helper = (args.helper or support.BINARY).resolve()
+    args.helper = (args.helper or support.default_binary()).resolve()
     args.blender = args.blender.resolve()
     for label, path in [("Blender", args.blender), ("native helper", args.helper)]:
         if not path.is_file() or not os.access(path, os.X_OK):
diff --git a/packages/experimental/cua-macos/native/tests/launcher_identity_e2e.py b/packages/experimental/cua-macos/native/tests/launcher_identity_e2e.py
index e8204274d1..83293666be 100644
--- a/packages/experimental/cua-macos/native/tests/launcher_identity_e2e.py
+++ b/packages/experimental/cua-macos/native/tests/launcher_identity_e2e.py
@@ -1,4 +1,4 @@
-"""Verify system responsibility across nested GUI launchers and helper reuse; no TCC grants are required."""
+"""Verify independent helper responsibility across nested GUI launchers and helper reuse; no TCC grants are required."""
 import argparse
 import base64
 from contextlib import ExitStack
@@ -12,20 +12,27 @@ import subprocess
 import tempfile
 import uuid
 
-from native_test_support import BINARY, ROOT
+from native_test_support import copy_helper, default_binary, ROOT, unregister_helper
 from shared_helper_e2e import Connection, wait_released
 
 
 def main():
     parser = argparse.ArgumentParser(description=__doc__)
-    parser.add_argument("--helper", type=Path, default=BINARY)
+    parser.add_argument("--helper", type=Path, default=None)
     args = parser.parse_args()
+    args.helper = args.helper or default_binary()
     with tempfile.TemporaryDirectory(prefix="cua-", dir="/tmp") as temporary, ExitStack() as cleanup:
         root = Path(temporary)
-        helper = root / "helper"
-        shutil.copy2(args.helper.resolve(strict=True), helper)
+        helper = copy_helper(args.helper, root)
+        cleanup.callback(unregister_helper, helper)
         key = hashlib.sha256(helper.read_bytes()).hexdigest()
         runtime = root / "r"
+        bare = root / "unbundled-helper"
+        shutil.copy2(helper, bare)
+        rejected = subprocess.run([str(bare), "--ensure-shared", "--runtime-key", key,
+                                   "--runtime-directory", str(runtime), "--startup-timeout-ms", "10000"],
+                                  capture_output=True, text=True, timeout=15)
+        assert rejected.returncode == 1 and "requires its signed application bundle" in rejected.stderr, rejected
         bundle = root / "Visual Studio Code.app"
         binaries = bundle / "Contents" / "MacOS"
         binaries.mkdir(parents=True)
@@ -52,6 +59,7 @@ def main():
                         str(bundle), "--args", str(nested_launcher), str(helper), "--ensure-shared", "--runtime-key", key,
                         "--runtime-directory", str(runtime), "--startup-timeout-ms", "10000"],
                        check=True, capture_output=True, text=True, timeout=25)
+        assert ready_file.read_text().strip(), stderr_file.read_text()
         ready = json.loads(ready_file.read_text())
         owner = ready["pid"]
         cleanup.callback(wait_released, runtime / (key + ".lock"), owner)
@@ -60,8 +68,8 @@ def main():
         state = first.call("permissionStatus", {})
         assert state["parent"]["pid"] == 1, state["parent"]
         source = state["launchApplication"]
-        assert source["name"] == bundle.name, source["name"]
-        assert Path(source["path"]).resolve() == bundle.resolve(), source["path"]
+        assert source["name"] == helper.parents[2].name, source["name"]
+        assert Path(source["path"]).resolve() == helper.parents[2].resolve(), source["path"]
         assert source["icon"].startswith("data:image/png;base64,")
         image = base64.b64decode(source["icon"].split(",", 1)[1], validate=True)
         assert image[:8] == b"\x89PNG\r\n\x1a\n"
@@ -69,7 +77,7 @@ def main():
         second = Connection(runtime / (key + ".sock"), key)
         cleanup.callback(second.close)
         assert second.call("permissionStatus", {})["launchApplication"] == source
-        print("PASS: system-responsible app wins over the nearest GUI ancestor and survives launcher exit and helper reuse")
+        print("PASS: the helper owns its permission identity independently of nested GUI launchers and retained connections")
 
 
 if __name__ == "__main__":
diff --git a/packages/experimental/cua-macos/native/tests/native_test_support.py b/packages/experimental/cua-macos/native/tests/native_test_support.py
index 36732a2289..0e2f35846d 100644
--- a/packages/experimental/cua-macos/native/tests/native_test_support.py
+++ b/packages/experimental/cua-macos/native/tests/native_test_support.py
@@ -2,6 +2,8 @@
 import json
 from contextlib import ExitStack
 import os
+import platform
+import shutil
 from pathlib import Path
 import select
 import signal
@@ -10,7 +12,33 @@ import time
 from typing import Callable
 
 ROOT = Path(__file__).resolve().parents[1]
-BINARY = ROOT / ".build" / "release" / "dsh-cua-native"
+def default_binary():
+    """Resolve the application produced by native/build_app.py for this host."""
+    architecture = "arm64" if platform.machine() == "arm64" else "x64"
+    directory = ROOT / "bin" / f"darwin-{architecture}"
+    receipt = json.loads((directory / "current.json").read_text())
+    return directory / receipt["bundle"] / "DSH Computer Use.app/Contents/MacOS/dsh-cua-native"
+
+
+def copy_helper(binary, destination):
+    """Retain the app signature; bare reference binaries remain usable for old-version comparisons."""
+    binary = binary.resolve(strict=True)
+    application = binary.parent.parent.parent
+    if application.suffix == ".app":
+        copied = destination / application.name
+        shutil.copytree(application, copied)
+        return copied / "Contents/MacOS" / binary.name
+    copied = destination / "helper"
+    shutil.copy2(binary, copied)
+    return copied
+
+
+def unregister_helper(binary):
+    """Remove LaunchServices registrations before deleting an owned test application."""
+    application = binary.parent.parent.parent
+    if application.suffix == ".app":
+        subprocess.run(["/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister",
+                        "-u", str(application)], check=True, capture_output=True, timeout=10)
 
 
 def run_cleanup(*actions: Callable[[], None]) -> None:
@@ -74,7 +102,7 @@ def stop_group(process):
 class NativeHelper:
     """One serial helper whose request transcript remains available on failure."""
     def __init__(self, transcript, helper_path=None):
-        binary = Path(helper_path).resolve() if helper_path is not None else BINARY
+        binary = Path(helper_path).resolve() if helper_path is not None else default_binary()
         self.process = subprocess.Popen([str(binary)], stdin=subprocess.PIPE, stdout=subprocess.PIPE,
                                         text=True, start_new_session=True)
         self.sequence = 0
diff --git a/packages/experimental/cua-macos/native/tests/paste_e2e.py b/packages/experimental/cua-macos/native/tests/paste_e2e.py
index 6a8fe15fe1..882a9916ea 100644
--- a/packages/experimental/cua-macos/native/tests/paste_e2e.py
+++ b/packages/experimental/cua-macos/native/tests/paste_e2e.py
@@ -6,7 +6,7 @@ import subprocess
 import tempfile
 import time
 
-from native_test_support import BINARY, ROOT, NativeHelper, line, run_cleanup, stop
+from native_test_support import default_binary, ROOT, NativeHelper, line, run_cleanup, stop
 
 
 def wait_state(path, predicate):
@@ -23,9 +23,10 @@ def wait_state(path, predicate):
 
 def main():
     parser = argparse.ArgumentParser(description=__doc__)
-    parser.add_argument("--helper", type=Path, default=BINARY)
+    parser.add_argument("--helper", type=Path, default=None)
     parser.add_argument("--artifacts", type=Path)
     args = parser.parse_args()
+    args.helper = args.helper or default_binary()
     transcript = []
     processes = []
     helper = None
diff --git a/packages/experimental/cua-macos/native/tests/protocol_e2e.py b/packages/experimental/cua-macos/native/tests/protocol_e2e.py
index 47337213f0..958fc121aa 100644
--- a/packages/experimental/cua-macos/native/tests/protocol_e2e.py
+++ b/packages/experimental/cua-macos/native/tests/protocol_e2e.py
@@ -13,7 +13,7 @@ import subprocess
 import tempfile
 import time
 
-from native_test_support import BINARY, stop_group
+from native_test_support import default_binary, stop_group
 
 
 def request(identifier, method, params):
@@ -178,9 +178,10 @@ def main():
     if not __debug__:
         raise RuntimeError("Run this assertion-based regression without Python -O")
     parser = argparse.ArgumentParser(description=__doc__)
-    parser.add_argument("--helper", type=Path, default=BINARY, help="Built JSONL helper; defaults to native_test_support.BINARY")
+    parser.add_argument("--helper", type=Path, default=None, help="Built JSONL helper; defaults to the packaged application")
     parser.add_argument("--timeout", type=float, default=30, help="Seconds allowed for each owned helper to drain and exit")
     args = parser.parse_args()
+    args.helper = args.helper or default_binary()
     if not math.isfinite(args.timeout) or args.timeout <= 0:
         parser.error("--timeout must be positive and finite")
     helper = args.helper.resolve(strict=True)
diff --git a/packages/experimental/cua-macos/native/tests/shared_helper_e2e.py b/packages/experimental/cua-macos/native/tests/shared_helper_e2e.py
index ad71ec72b2..c5d7543dea 100644
--- a/packages/experimental/cua-macos/native/tests/shared_helper_e2e.py
+++ b/packages/experimental/cua-macos/native/tests/shared_helper_e2e.py
@@ -19,7 +19,7 @@ import subprocess
 import tempfile
 import time
 
-from native_test_support import BINARY, ROOT, line, stop
+from native_test_support import copy_helper, default_binary, ROOT, line, stop, unregister_helper
 
 
 CONFIG = {"maxRequestBytes": 1024 * 1024, "maxResponseBytes": 32 * 1024 * 1024,
@@ -97,13 +97,14 @@ def wait_released(path, pid, timeout=10):
 
 def main():
     parser = argparse.ArgumentParser(description=__doc__)
-    parser.add_argument("--helper", type=Path, default=BINARY)
+    parser.add_argument("--helper", type=Path, default=None)
     parser.add_argument("--without-desktop", action="store_true")
     args = parser.parse_args()
-    with tempfile.TemporaryDirectory(prefix="cua-", dir="/tmp") as temporary:
+    args.helper = args.helper or default_binary()
+    with tempfile.TemporaryDirectory(prefix="cua-", dir="/tmp") as temporary, ExitStack() as applications:
         root = Path(temporary)
-        helper = root / "helper"
-        shutil.copy2(args.helper.resolve(strict=True), helper)
+        helper = copy_helper(args.helper, root)
+        applications.callback(unregister_helper, helper)
         key = hashlib.sha256(helper.read_bytes()).hexdigest()
         runtime = root / "r"
         socket_path = runtime / (key + ".sock")
diff --git a/packages/experimental/cua-macos/native/tests/startup_e2e.py b/packages/experimental/cua-macos/native/tests/startup_e2e.py
new file mode 100644
index 0000000000..6db8b659f5
--- /dev/null
+++ b/packages/experimental/cua-macos/native/tests/startup_e2e.py
@@ -0,0 +1,141 @@
+"""Check real LaunchServices startup failures with owned apps and no permission prompts."""
+import argparse
+from contextlib import ExitStack
+import fcntl
+import hashlib
+import json
+import os
+from pathlib import Path
+import plistlib
+import signal
+import socket
+import subprocess
+import tempfile
+import time
+import uuid
+
+from native_test_support import copy_helper, default_binary, ROOT, unregister_helper
+from shared_helper_e2e import Connection, wait_released
+
+
+def wait_exited(pid):
+    deadline = time.monotonic() + 5
+    while time.monotonic() < deadline:
+        try:
+            os.kill(pid, 0)
+        except ProcessLookupError:
+            return
+        time.sleep(0.01)
+    raise AssertionError(f"Startup left owned helper {pid} alive")
+
+
+def cleanup_fixture(root):
+    record = root / "served.pid"
+    if record.exists():
+        pid = int(record.read_text())
+        try:
+            os.kill(pid, signal.SIGKILL)
+        except ProcessLookupError:
+            pass
+        wait_exited(pid)
+
+
+def launch(helper, runtime, timeout_ms, expected_status=1):
+    key = hashlib.sha256(helper.read_bytes()).hexdigest()
+    start = time.monotonic()
+    result = subprocess.run([str(helper), "--ensure-shared", "--runtime-key", key,
+                             "--runtime-directory", str(runtime), "--startup-timeout-ms", str(timeout_ms)],
+                            capture_output=True, text=True, timeout=timeout_ms / 1000 + 10)
+    elapsed = time.monotonic() - start
+    try:
+        response = json.loads(result.stdout)
+    except ValueError as error:
+        raise AssertionError((elapsed, result.returncode, result.stdout, result.stderr)) from error
+    if result.returncode != expected_status and response.get("type") == "ready":
+        os.kill(response["pid"], signal.SIGKILL)
+        wait_exited(response["pid"])
+    assert result.returncode == expected_status, (result.returncode, response, result.stderr)
+    return response, elapsed
+
+
+def main():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--helper", type=Path)
+    parser.add_argument("--runtime-source", type=Path, default=ROOT / "Sources/CuaNative/SharedHelperRuntime.swift")
+    args = parser.parse_args()
+    with tempfile.TemporaryDirectory(prefix="cua-", dir="/tmp") as temporary, ExitStack() as cleanup:
+        root = Path(temporary)
+        actual_root = root / "actual"
+        actual_root.mkdir()
+        helper = copy_helper(args.helper or default_binary(), actual_root)
+        cleanup.callback(unregister_helper, helper)
+        runtime = root / "r"
+        runtime.mkdir(mode=0o700)
+        ready, elapsed = launch(helper, runtime, 5000, expected_status=0)
+        try:
+            client = Connection(runtime / (ready["runtimeKey"] + ".sock"), ready["runtimeKey"])
+            client.close()
+            wait_released(runtime / (ready["runtimeKey"] + ".lock"), ready["pid"])
+        except BaseException:
+            try:
+                os.kill(ready["pid"], signal.SIGKILL)
+            except ProcessLookupError:
+                pass
+            wait_exited(ready["pid"])
+            raise
+        print(f"PASS: cold application launch within the default 5s budget, {elapsed:.3f}s", flush=True)
+        # Foundation canonicalizes /private/tmp to /tmp; use the lock created by the real server.
+        path_locks = list(runtime.glob("path-*.lock"))
+        assert len(path_locks) == 1, path_locks
+        with path_locks[0].open("r+") as held:
+            os.chmod(held.name, 0o600)
+            fcntl.flock(held, fcntl.LOCK_EX)
+            failure, elapsed = launch(helper, runtime, 10000)
+            assert failure["code"] == "NATIVE_RUNTIME_CONFLICT", failure
+            assert "close its clients" in failure["message"], failure
+            assert elapsed < 5, elapsed
+            assert not list(runtime.glob("*.failed")), "Attempt failure record was not removed"
+            print(f"PASS: real helper startup cause preserved in {elapsed:.3f}s")
+
+        fixture_root = root / "fixture"
+        binary = fixture_root / "Startup.app/Contents/MacOS/startup"
+        binary.parent.mkdir(parents=True)
+        application = binary.parent.parent.parent
+        cleanup.callback(unregister_helper, binary)
+        cleanup.callback(cleanup_fixture, fixture_root)
+        with (application / "Contents/Info.plist").open("wb") as output:
+            plistlib.dump({"CFBundleExecutable": "startup", "CFBundleIdentifier": f"dev.dsh.cua.startup.{uuid.uuid4().hex}",
+                          "CFBundlePackageType": "APPL", "LSUIElement": True}, output)
+        subprocess.run(["xcrun", "swiftc", "-parse-as-library", "-swift-version", "6",
+                        str(ROOT / "tests/StartupFixture.swift"), str(args.runtime_source),
+                        str(ROOT / "Sources/CuaNative/Protocol.swift"), "-o", str(binary)], check=True, timeout=90)
+        subprocess.run(["codesign", "--force", "--sign", "-", str(application)], check=True, capture_output=True)
+        for mode, timeout_ms, expected in [("exit", 10000, "NATIVE_STARTUP"),
+                                           ("stall", 1500, "NATIVE_STARTUP_TIMEOUT"),
+                                           ("stale", 1500, "NATIVE_STARTUP_TIMEOUT")]:
+            (fixture_root / "mode").write_text(mode)
+            with ExitStack() as case:
+                stale_ready = None
+                if mode == "stale":
+                    key = hashlib.sha256(binary.read_bytes()).hexdigest()
+                    stale_socket = case.enter_context(socket.socket(socket.AF_UNIX, socket.SOCK_STREAM))
+                    socket_path = runtime / (key + ".sock")
+                    stale_socket.bind(str(socket_path))
+                    os.chmod(socket_path, 0o600)
+                    case.callback(socket_path.unlink)
+                    stale_ready = runtime / (key + ".ready")
+                    stale_ready.write_text(json.dumps({"type": "ready", "protocol": 1, "runtimeKey": key,
+                                                       "pid": os.getpid(), "instanceId": "stale"}))
+                    case.callback(stale_ready.unlink)
+                failure, elapsed = launch(binary, runtime, timeout_ms)
+                assert failure["code"] == expected, (mode, failure, elapsed)
+                if mode == "exit":
+                    assert elapsed < 5, elapsed
+                pid = int((fixture_root / "served.pid").read_text())
+                wait_exited(pid)
+                (fixture_root / "served.pid").unlink()
+                print(f"PASS: {mode}, {failure['code']}, process exited, {elapsed:.3f}s")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/packages/experimental/cua-macos/native/tests/swift/SharedHelperTests.swift b/packages/experimental/cua-macos/native/tests/swift/SharedHelperTests.swift
index b193612e31..9b43bc330e 100644
--- a/packages/experimental/cua-macos/native/tests/swift/SharedHelperTests.swift
+++ b/packages/experimental/cua-macos/native/tests/swift/SharedHelperTests.swift
@@ -94,9 +94,61 @@ func refusesInvalidSharedConfiguration(_ name: String, _ value: JSONValue) throw
     for arguments in [
         ["--ensure-shared", "--runtime-key", "invalid", "--runtime-directory", "/tmp/cua", "--startup-timeout-ms", "1000"],
         ["--serve", "--runtime-key", runtimeKey, "--runtime-directory", "relative", "--startup-timeout-ms", "1000"],
+        ["--serve", "--runtime-key", runtimeKey, "--runtime-directory", "/tmp/cua", "--startup-timeout-ms", "1000", "--startup-id", "invalid"],
+        ["--ensure-shared", "--runtime-key", runtimeKey, "--runtime-directory", "/tmp/cua", "--startup-timeout-ms", "1000", "--startup-id", UUID().uuidString],
         ["--serve", "--runtime-key", runtimeKey, "--runtime-directory", "/tmp/cua", "--startup-timeout-ms", "0"],
         ["--serve", "--runtime-key", runtimeKey, "--runtime-directory", "/" + String(repeating: "x", count: 100), "--startup-timeout-ms", "1000"],
     ] {
         #expect(throws: NativeFailure.self) { try SharedHelperOptions(arguments: arguments) }
     }
 }
+
+@Test func startupFailuresAreScopedToOneLaunchAttempt() throws {
+    let directory = "/tmp/cua-\(UUID().uuidString.prefix(12))"
+    let arguments = ["--serve", "--runtime-key", runtimeKey, "--runtime-directory", directory,
+                     "--startup-timeout-ms", "5000", "--startup-id"]
+    let options = try SharedHelperOptions(arguments: arguments + [UUID().uuidString])
+    try options.prepareDirectory()
+    defer { try? FileManager.default.removeItem(atPath: directory) }
+    let other = try SharedHelperOptions(arguments: arguments + [UUID().uuidString])
+    try options.recordStartupFailure(NativeFailure(code: "NATIVE_RUNTIME_CONFLICT", message: "path is occupied"))
+    let failure = try SharedHelperOptions.startupFailure(at: options.failurePath)
+    #expect(failure?.code == "NATIVE_RUNTIME_CONFLICT")
+    #expect(failure?.message == "path is occupied")
+    #expect(try SharedHelperOptions.startupFailure(at: other.failurePath) == nil)
+    var info = stat()
+    #expect(lstat(try #require(options.failurePath), &info) == 0)
+    #expect(info.st_mode & 0o777 == 0o600)
+}
+
+@Test func readinessUsesTheRemainingStartupBudget() throws {
+    let directory = "/tmp/cua-\(UUID().uuidString.prefix(12))"
+    let options = try SharedHelperOptions(arguments: ["--ensure-shared", "--runtime-key", runtimeKey,
+        "--runtime-directory", directory, "--startup-timeout-ms", "5000"])
+    try options.prepareDirectory()
+    defer { try? FileManager.default.removeItem(atPath: directory) }
+    let start = DispatchTime.now().uptimeNanoseconds
+    do {
+        _ = try options.existingReady(deadline: start)
+        Issue.record("Expired startup returned readiness")
+    } catch let error as NativeFailure { #expect(error.code == "NATIVE_STARTUP_TIMEOUT") }
+    #expect(DispatchTime.now().uptimeNanoseconds - start < 1_000_000_000)
+}
+
+@Test func exitedStartupProcessFailsWithoutRunningTheMainRunLoop() throws {
+    let directory = "/tmp/cua-\(UUID().uuidString.prefix(12))"
+    let options = try SharedHelperOptions(arguments: ["--ensure-shared", "--runtime-key", runtimeKey,
+        "--runtime-directory", directory, "--startup-timeout-ms", "5000"])
+    try options.prepareDirectory()
+    defer { try? FileManager.default.removeItem(atPath: directory) }
+    let child = Process()
+    child.executableURL = URL(fileURLWithPath: "/usr/bin/true")
+    try child.run()
+    child.waitUntilExit()
+    let start = DispatchTime.now().uptimeNanoseconds
+    do {
+        _ = try options.existingReady(deadline: options.startupDeadline(), launchedPID: child.processIdentifier)
+        Issue.record("Exited startup returned readiness")
+    } catch let error as NativeFailure { #expect(error.code == "NATIVE_STARTUP") }
+    #expect(DispatchTime.now().uptimeNanoseconds - start < 1_000_000_000)
+}
diff --git a/packages/experimental/cua-macos/native/tests/test_build_app.py b/packages/experimental/cua-macos/native/tests/test_build_app.py
new file mode 100644
index 0000000000..e8578c434f
--- /dev/null
+++ b/packages/experimental/cua-macos/native/tests/test_build_app.py
@@ -0,0 +1,91 @@
+"""Application publication preserves complete immutable bundles and previous receipts."""
+import importlib.util
+import json
+from pathlib import Path
+import tempfile
+import unittest
+from unittest.mock import patch
+
+spec = importlib.util.spec_from_file_location("build_app", Path(__file__).resolve().parents[1] / "build_app.py")
+builder = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(builder)
+
+
+class PublicationTests(unittest.TestCase):
+    def setUp(self):
+        temporary = tempfile.TemporaryDirectory(prefix="cua-bundle-")
+        self.addCleanup(temporary.cleanup)
+        self.root = Path(temporary.name)
+        self.binary = self.root / "native"
+        self.binary.write_bytes(b"first executable")
+        self.binary.chmod(0o755)
+        self.plist = self.root / "Info.plist"
+        self.plist.write_text("application identity")
+        self.icon = self.root / "DSHComputerUse.icns"
+        self.icon.write_bytes(b"computer use icon")
+        for filename in ["LICENSE.computer-use-icon", "LICENSE.cua-driver"]:
+            (self.root / filename).write_text("fixture license notice")
+        self.output = self.root / "applications"
+        self.sign = patch.object(builder.subprocess, "run")
+        self.commands = self.sign.start()
+        self.addCleanup(self.sign.stop)
+
+    def publish(self):
+        return builder.publish(self.binary, self.output, "-", self.plist)
+
+    def test_unchanged_bundles_reuse_the_inode_and_changed_bundles_leave_old_clients_intact(self):
+        first = self.publish()
+        self.assertEqual((first.parents[1] / "Resources/DSHComputerUse.icns").read_bytes(), self.icon.read_bytes())
+        inode = first.stat().st_ino
+        self.assertEqual(self.publish(), first)
+        self.assertEqual(first.stat().st_ino, inode)
+        self.binary.write_bytes(b"second executable")
+        second = self.publish()
+        self.assertNotEqual(first, second)
+        self.assertEqual(first.read_bytes(), b"first executable")
+        self.assertEqual(second.read_bytes(), b"second executable")
+        selected = json.loads((self.output / "current.json").read_text())["bundle"]
+        self.assertEqual(second.parents[3].name, selected)
+
+    def test_signing_failure_keeps_the_previous_selected_application(self):
+        first = self.publish()
+        previous = (self.output / "current.json").read_bytes()
+        self.commands.side_effect = RuntimeError("signer unavailable")
+        with self.assertRaisesRegex(RuntimeError, "signer unavailable"):
+            self.publish()
+        self.assertEqual((self.output / "current.json").read_bytes(), previous)
+        self.assertEqual(first.read_bytes(), b"first executable")
+        self.assertEqual(list(self.output.glob(".prepare-*")), [])
+
+    def test_corrupted_retained_application_is_rejected_without_replacement(self):
+        first = self.publish()
+        first.write_bytes(b"damaged")
+        with self.assertRaisesRegex(ValueError, "does not match its content digest"):
+            self.publish()
+        self.assertEqual(first.read_bytes(), b"damaged")
+
+    def test_bundle_digest_rejects_symbolic_links_and_tracks_execute_permission(self):
+        first = self.publish()
+        application = first.parents[2]
+        before = builder.bundle_digest(application)
+        first.chmod(0o644)
+        self.assertNotEqual(before, builder.bundle_digest(application))
+        (application / "outside").symlink_to(self.binary)
+        with self.assertRaisesRegex(ValueError, "symbolic link"):
+            builder.bundle_digest(application)
+
+    def test_bundle_digest_rejects_a_link_as_the_application_root(self):
+        first = self.publish()
+        linked = self.root / "linked.app"
+        linked.symlink_to(first.parents[2], target_is_directory=True)
+        with self.assertRaisesRegex(ValueError, "not a real directory"):
+            builder.bundle_digest(linked)
+
+    def test_release_identity_uses_a_secure_timestamp(self):
+        builder.publish(self.binary, self.output, "Developer ID Application: Example", self.plist)
+        self.assertIn("--timestamp", self.commands.call_args_list[0].args[0])
+        self.assertNotIn("--timestamp=none", self.commands.call_args_list[0].args[0])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/packages/experimental/cua-macos/native/tests/test_native_test_support.py b/packages/experimental/cua-macos/native/tests/test_native_test_support.py
new file mode 100644
index 0000000000..3385762a8a
--- /dev/null
+++ b/packages/experimental/cua-macos/native/tests/test_native_test_support.py
@@ -0,0 +1,24 @@
+"""Reference helper paths work at every filesystem depth."""
+from pathlib import Path
+import tempfile
+import unittest
+from unittest.mock import patch
+
+from native_test_support import copy_helper, unregister_helper
+
+
+class ReferencePathTests(unittest.TestCase):
+    def test_shallow_reference_path_reaches_the_bare_copy_and_needs_no_registration(self):
+        with tempfile.TemporaryDirectory() as directory:
+            destination = Path(directory)
+            source = Path("/opt/reference-helper")
+            with patch.object(Path, "resolve", return_value=source), patch("native_test_support.shutil.copy2") as copy:
+                self.assertEqual(copy_helper(source, destination), destination / "helper")
+                copy.assert_called_once_with(source, destination / "helper")
+            with patch("native_test_support.subprocess.run") as run:
+                unregister_helper(source)
+                run.assert_not_called()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/packages/experimental/cua-macos/package.json b/packages/experimental/cua-macos/package.json
index 4cd95636d1..13a7c2fd2b 100644
--- a/packages/experimental/cua-macos/package.json
+++ b/packages/experimental/cua-macos/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-cua-macos",
   "description": "macOS native provider for shared Computer Use application and window objects",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -26,11 +26,16 @@
     "locale/*.json",
     "lib/index.js",
     "native/bin",
+    "cua-helper.json",
     "native/Package.swift",
+    "native/Info.plist",
+    "native/DSHComputerUse.icns",
+    "native/build_app.py",
     "native/Sources",
     "native/tests/swift",
     "native/tests/test_swift.py",
     "native/LICENSE.cua-driver",
+    "native/LICENSE.computer-use-icon",
     "native/upstream.json",
     "native/README.md",
     "native/README.zh.md",
@@ -91,7 +96,8 @@
     "@deepseek-ai/dsh-storage-domain": "workspace:*"
   },
   "scripts": {
-    "build:native": "swift build --package-path native --configuration release"
+    "build:native": "xcrun python3 native/build_app.py",
+    "build:icon": "node native/generate_icon.mjs"
   },
   "os": [
     "darwin"
diff --git a/packages/experimental/cua-macos/src/native-build.ts b/packages/experimental/cua-macos/src/native-build.ts
index ab804bb0eb..8fc603a61e 100644
--- a/packages/experimental/cua-macos/src/native-build.ts
+++ b/packages/experimental/cua-macos/src/native-build.ts
@@ -1,16 +1,18 @@
-/** Source-checkout preparation and installed native executable resolution. */
+/** Source-checkout preparation and installed macOS application resolution. */
 import { constants } from 'node:fs'
-import { createHash } from 'node:crypto'
 import { access, mkdir, readFile } from 'node:fs/promises'
-import { dirname, join, resolve } from 'node:path'
-import { withFileLock, writeFileAtomic } from '@deepseek-ai/dsh-atomic-write'
+import { join, resolve } from 'node:path'
+import { withFileLock } from '@deepseek-ai/dsh-atomic-write'
 import type { SubprocessOutcome, SubprocessRuntime } from '@deepseek-ai/dsh-subprocess'
+import { z } from 'zod'
+
+const NativeApplication = z.object({ bundle: z.string().regex(/^[a-f0-9]{64}$/) }).strict()
 
 /** Architecture names used by the platform-specific native payload. */
 export type NativeArchitecture = 'arm64' | 'x64'
 
 /**
- * Validate the host before preparing a platform-specific executable.
+ * Validate the host before preparing a platform-specific application.
  * @param platform - Node host platform.
  * @param architecture - Node host architecture.
  * @returns Supported macOS architecture.
@@ -32,18 +34,21 @@ export interface NativeBuildSpec {
 }
 
 /**
- * Locate the platform-specific executable owned by the CUA package.
- * @param packageRoot - Directory containing the CUA package manifest.
- * @param architecture - Architecture of the process that will execute the helper.
- * @returns Absolute executable path.
+ * Resolve the immutable application selected by a packaged or source-build receipt.
+ * @param directory - Architecture-specific directory containing current.json and application generations.
+ * @returns Executable inside the selected application bundle.
+ * @throws When the receipt is invalid or the application executable is missing.
  */
-export function nativeExecutablePath(packageRoot: string, architecture: NativeArchitecture): string {
-  return join(packageRoot, 'native', 'bin', `darwin-${architecture}`, 'dsh-cua-native')
+export async function nativeExecutablePath(directory: string): Promise<string> {
+  const receipt = NativeApplication.parse(JSON.parse(await readFile(join(directory, 'current.json'), 'utf8')))
+  const executable = join(directory, receipt.bundle, 'DSH Computer Use.app', 'Contents', 'MacOS', 'dsh-cua-native')
+  await access(executable, constants.X_OK)
+  return executable
 }
 
 /**
  * Recognize the repository-owned package location before allowing local compilation.
- * @param packageRoot - Real directory containing this package.
+ * @param packageRoot - Real directory containing the CUA package manifest.
  * @returns True only for a CUA package in a DSH source checkout.
  */
 export async function isSourcePackage(packageRoot: string): Promise<boolean> {
@@ -59,70 +64,48 @@ export async function isSourcePackage(packageRoot: string): Promise<boolean> {
 }
 
 /**
- * Build the package payload and retain an immutable executable for source-runtime processes.
+ * Build and sign an immutable helper application with the selected Apple developer tools.
  * @param spec - Checkout, target, managed process provider and cancellation/deadline limits.
- * @returns Content-addressed runtime path after compilation and complete process cleanup.
- * @throws When compilation, cancellation, resource cleanup or artifact publication fails.
+ * @returns Executable inside the prepared application, after complete compiler cleanup.
+ * @throws When preparation, cancellation, resource cleanup or receipt validation fails.
  */
 export async function buildNativeExecutable(spec: NativeBuildSpec): Promise<string> {
   spec.signal.throwIfAborted()
-  const executable = nativeExecutablePath(spec.packageRoot, spec.architecture)
-  await mkdir(dirname(executable), { recursive: true })
-  const signal = AbortSignal.any([spec.signal, AbortSignal.timeout(spec.timeoutMs)])
-  return withFileLock(executable, () => compileNative(spec, signal, executable), { waitMs: spec.timeoutMs, signal })
-}
-
-async function compileNative(spec: NativeBuildSpec, signal: AbortSignal, executable: string): Promise<string> {
   const nativeRoot = join(spec.packageRoot, 'native')
-  const scratch = join(nativeRoot, '.build', `runtime-${spec.architecture}`)
-  const handle = spec.subprocess.spawn({
-    argv: ['/usr/bin/xcrun', 'swift', 'build', '--package-path', nativeRoot,
-      '--scratch-path', scratch, '--configuration', 'release', '--product', 'dsh-cua-native',
-      '--arch', spec.architecture === 'x64' ? 'x86_64' : 'arm64'],
-    cwd: spec.packageRoot, signal, graceMs: spec.graceMs,
-    stdio: { stdin: 'ignore', stdout: { maxBytes: 65_536 }, stderr: { maxBytes: 65_536 } },
-  })
-  let outcome: SubprocessOutcome
-  try { outcome = await handle.done } finally {
-    try { handle.terminate() } finally {
-      await handle.waitForExit()
+  const directory = join(nativeRoot, '.build', 'prepared', spec.architecture)
+  const signal = AbortSignal.any([spec.signal, AbortSignal.timeout(spec.timeoutMs)])
+  await mkdir(join(nativeRoot, '.build'), { recursive: true })
+  return withFileLock(join(nativeRoot, '.build', 'application-build'), async () => {
+    const handle = spec.subprocess.spawn({
+      argv: ['/usr/bin/xcrun', 'python3', join(nativeRoot, 'build_app.py'),
+        '--scratch-path', join(nativeRoot, '.build', `runtime-${spec.architecture}`),
+        '--output-directory', directory, '--arch', spec.architecture === 'x64' ? 'x86_64' : 'arm64'],
+      cwd: spec.packageRoot, signal, graceMs: spec.graceMs,
+      stdio: { stdin: 'ignore', stdout: { maxBytes: 65_536 }, stderr: { maxBytes: 65_536 } },
+    })
+    let outcome: SubprocessOutcome
+    try { outcome = await handle.done } finally {
+      try { handle.terminate() } finally {
+        if (!await handle.waitForExit()) throw new Error('Computer use preparation did not release its managed process range')
+      }
     }
-  }
-  signal.throwIfAborted()
-  if (outcome.exitCode !== 0 || outcome.signal !== null) {
-    const diagnostics = `${handle.collected.stdout?.readFrom(0).text ?? ''}${handle.collected.stderr?.readFrom(0).text ?? ''}`
-    throw new Error(`Computer use native preparation failed (${String(outcome.exitCode)}, ${String(outcome.signal)}): ${diagnostics}`)
-  }
-  const built = await readFile(join(scratch, 'release', 'dsh-cua-native'))
-  let previous: Buffer | undefined
-  try { previous = await readFile(executable) } catch (error) {
-    if ((error as NodeJS.ErrnoException).code !== 'ENOENT') throw error
-  }
-  signal.throwIfAborted()
-  if (!previous?.equals(built)) await writeFileAtomic(executable, built, { mode: 0o755 })
-  const digest = createHash('sha256').update(built).digest('hex')
-  const runtime = join(nativeRoot, '.build', 'prepared', spec.architecture, digest, 'dsh-cua-native')
-  await mkdir(dirname(runtime), { recursive: true })
-  let retained: Buffer | undefined
-  try { retained = await readFile(runtime) } catch (error) {
-    if ((error as NodeJS.ErrnoException).code !== 'ENOENT') throw error
-  }
-  if (retained && !retained.equals(built)) throw new Error('Computer use retained executable does not match its content digest')
-  signal.throwIfAborted()
-  if (!retained) await writeFileAtomic(runtime, built, { mode: 0o755 })
-  await access(runtime, constants.X_OK)
-  return runtime
+    signal.throwIfAborted()
+    if (outcome.exitCode !== 0 || outcome.signal !== null) {
+      const diagnostics = `${handle.collected.stdout?.readFrom(0).text ?? ''}${handle.collected.stderr?.readFrom(0).text ?? ''}`
+      throw new Error(`Computer use native preparation failed (${String(outcome.exitCode)}, ${String(outcome.signal)}): ${diagnostics}`)
+    }
+    return nativeExecutablePath(directory)
+  }, { waitMs: spec.timeoutMs, signal })
 }
 
 /**
- * Prepare source builds on activation; installed packages must already carry their native payload.
+ * Prepare source builds on activation; installed packages carry their signed application.
  * @param spec - Native preparation inputs for this host.
- * @returns Ready native executable without requiring a compiler for an installed package.
+ * @returns Executable inside a ready application without compiling or re-signing an installed package.
  */
 export async function prepareNativeExecutable(spec: NativeBuildSpec): Promise<string> {
   if (await isSourcePackage(spec.packageRoot)) return buildNativeExecutable(spec)
-  const executable = nativeExecutablePath(spec.packageRoot, spec.architecture)
-  await access(executable, constants.X_OK)
+  const executable = await nativeExecutablePath(join(spec.packageRoot, 'native', 'bin', `darwin-${spec.architecture}`))
   spec.signal.throwIfAborted()
   return executable
 }
diff --git a/packages/experimental/cua-macos/src/shared-native.ts b/packages/experimental/cua-macos/src/shared-native.ts
index c1b141a98e..0fe2cf6436 100644
--- a/packages/experimental/cua-macos/src/shared-native.ts
+++ b/packages/experimental/cua-macos/src/shared-native.ts
@@ -166,6 +166,12 @@ class SharedNativeChannel implements NativeChannel {
     if (!range.value) throw transportError('NATIVE_CLEANUP', 'Native launcher process range did not close')
     if (outcome.status === 'rejected') throw outcome.reason
     if (outcome.value.exitCode !== 0 || outcome.value.signal !== null) {
+      const stdout = this.launcher.collected.stdout?.readFrom(0).text ?? ''
+      let response: unknown
+      try { response = JSON.parse(stdout) }
+      catch (_error) { /* Missing or incomplete output uses the retained process diagnostics below. */ }
+      const refusal = Refusal.safeParse(response)
+      if (refusal.success) throw transportError(refusal.data.code, refusal.data.message)
       const stderr = this.launcher.collected.stderr?.readFrom(0).text ?? ''
       throw transportError('NATIVE_STARTUP', `Native launcher failed (exit ${outcome.value.exitCode}, signal ${outcome.value.signal})${stderr ? `: ${stderr}` : ''}`)
     }
diff --git a/packages/experimental/cua-macos/tests/native-build.spec.ts b/packages/experimental/cua-macos/tests/native-build.spec.ts
index 178e656656..a57ba604ad 100644
--- a/packages/experimental/cua-macos/tests/native-build.spec.ts
+++ b/packages/experimental/cua-macos/tests/native-build.spec.ts
@@ -1,42 +1,49 @@
-/** Preparation uses the existing compiler cache and publishes only successful build output. */
-import { mkdtemp, mkdir, readFile, rm, stat, writeFile } from 'node:fs/promises'
+/** Managed application preparation and installed receipt validation. */
+import { createHash } from 'node:crypto'
+import { mkdtemp, mkdir, readFile, rm, writeFile } from 'node:fs/promises'
 import { tmpdir } from 'node:os'
-import { join } from 'node:path'
+import { dirname, join } from 'node:path'
 import { expect, it, onTestFinished, vi } from 'vitest'
 import type { SubprocessHandle, SubprocessOutcome, SubprocessSpawnSpec } from '@deepseek-ai/dsh-subprocess'
 import { buildNativeExecutable, isSourcePackage, nativeExecutablePath, nativeHostArchitecture, prepareNativeExecutable } from '../src/native-build.ts'
 
+async function publish(directory: string, bytes: Buffer): Promise<string> {
+  const bundle = createHash('sha256').update(bytes).digest('hex')
+  const executable = join(directory, bundle, 'DSH Computer Use.app', 'Contents/MacOS/dsh-cua-native')
+  await mkdir(dirname(executable), { recursive: true })
+  await writeFile(executable, bytes, { mode: 0o755 })
+  await writeFile(join(directory, 'current.json'), JSON.stringify({ bundle }))
+  return executable
+}
+
 async function fixture(diagnostics = true) {
   const root = await mkdtemp(join(tmpdir(), 'cua-native-build-'))
   onTestFinished(() => rm(root, { recursive: true, force: true }))
   const packageRoot = join(root, 'packages/experimental/cua-macos')
-  await mkdir(packageRoot, { recursive: true })
+  await mkdir(join(packageRoot, 'native'), { recursive: true })
   const controller = new AbortController()
-  let output: Buffer = Buffer.from([0xcf, 0xfa, 0xed, 0xfe, 0, 255, 128])
+  let output: Buffer = Buffer.from('signed application executable')
   let outcome: SubprocessOutcome = { exitCode: 0, signal: null }
   let beforeExit = async () => {}
   const terminate = vi.fn()
   const waitForExit = vi.fn(async () => true)
-  const spawn = vi.fn((request: SubprocessSpawnSpec): SubprocessHandle => {
-    const scratch = request.argv[request.argv.indexOf('--scratch-path') + 1]!
-    return {
-      stdin: undefined, stdout: undefined, stderr: undefined, control: undefined,
-      collected: diagnostics ? {
-        stdout: { readFrom: () => ({ text: 'build output', nextOffset: 12, lossy: false }) },
-        stderr: { readFrom: () => ({ text: 'compiler diagnostic', nextOffset: 19, lossy: false }) },
-      } : {},
-      done: (async () => {
-        await beforeExit()
-        if (outcome.exitCode === 0) {
-          await mkdir(join(scratch, 'release'), { recursive: true })
-          await writeFile(join(scratch, 'release/dsh-cua-native'), output)
-        }
-        return outcome
-      })(), terminate, waitForExit,
-    }
-  })
+  const spawn = vi.fn((request: SubprocessSpawnSpec): SubprocessHandle => ({
+    stdin: undefined, stdout: undefined, stderr: undefined, control: undefined,
+    collected: diagnostics ? {
+      stdout: { readFrom: () => ({ text: 'build output', nextOffset: 12, lossy: false }) },
+      stderr: { readFrom: () => ({ text: 'compiler diagnostic', nextOffset: 19, lossy: false }) },
+    } : {},
+    done: (async () => {
+      await beforeExit()
+      if (outcome.exitCode === 0 && !request.signal?.aborted) {
+        await publish(request.argv[request.argv.indexOf('--output-directory') + 1]!, output)
+      }
+      return outcome
+    })(), terminate, waitForExit,
+  }))
   const spec = { packageRoot, architecture: 'arm64' as const, subprocess: { spawn }, signal: controller.signal, timeoutMs: 60_000, graceMs: 100 }
-  return { root, spec, spawn, output, controller, terminate, waitForExit,
+  const directory = join(packageRoot, 'native/.build/prepared/arm64')
+  return { root, spec, directory, spawn, output, controller, terminate, waitForExit,
     setOutput: (value: Buffer) => { output = value },
     setOutcome: (value: SubprocessOutcome) => { outcome = value },
     beforeExit: (callback: () => Promise<void>) => { beforeExit = callback },
@@ -55,24 +62,25 @@ it('recognizes only the repository-owned package location as a source build', as
   await expect(isSourcePackage(f.spec.packageRoot)).rejects.toThrow()
 })
 
-it.each([['darwin', 'arm64'], ['darwin', 'x64']])('selects the %s/%s executable', (platform, architecture) => {
+it.each([['darwin', 'arm64'], ['darwin', 'x64']])('selects the %s/%s application', (platform, architecture) => {
   expect(nativeHostArchitecture(platform, architecture)).toBe(architecture)
 })
 it.each([['linux', 'arm64'], ['win32', 'x64'], ['darwin', 'ia32']])('refuses unsupported %s/%s hosts', (platform, architecture) => {
   expect(() => nativeHostArchitecture(platform, architecture)).toThrow('requires macOS')
 })
 
-it('publishes exact bytes and leaves an unchanged executable inode intact', async () => {
+it('returns a bundled executable only after the managed builder exits', async () => {
   const f = await fixture()
   const path = await buildNativeExecutable(f.spec)
-  const first = await stat(path)
   expect(await readFile(path)).toEqual(f.output)
-  await buildNativeExecutable(f.spec)
-  expect((await stat(path)).ino).toBe(first.ino)
-  expect(f.spawn).toHaveBeenCalledTimes(2)
-  expect(f.spawn.mock.calls[0]![0].argv).toContain('arm64')
-  expect(f.terminate).toHaveBeenCalledTimes(2)
-  expect(f.waitForExit).toHaveBeenCalledTimes(2)
+  expect(path).toContain(join('DSH Computer Use.app', 'Contents', 'MacOS'))
+  expect(f.spawn.mock.calls[0]![0].argv).toEqual([
+    '/usr/bin/xcrun', 'python3', join(f.spec.packageRoot, 'native/build_app.py'),
+    '--scratch-path', join(f.spec.packageRoot, 'native/.build/runtime-arm64'),
+    '--output-directory', f.directory, '--arch', 'arm64',
+  ])
+  expect(f.terminate).toHaveBeenCalledTimes(1)
+  expect(f.waitForExit).toHaveBeenCalledTimes(1)
 })
 
 it('checks source builds on activation and maps Intel architecture to the compiler target', async () => {
@@ -81,46 +89,64 @@ it('checks source builds on activation and maps Intel architecture to the compil
   const path = await prepareNativeExecutable({ ...f.spec, architecture: 'x64' })
   expect(f.spawn.mock.calls[0]![0].argv).toContain('x86_64')
   expect(path).toContain(join('native', '.build', 'prepared', 'x64'))
-  expect(await readFile(nativeExecutablePath(f.spec.packageRoot, 'x64'))).toEqual(f.output)
 })
 
-it('uses an installed executable without starting a compiler', async () => {
+it('uses an installed application without compiling or re-signing it', async () => {
   const f = await fixture()
-  const path = nativeExecutablePath(f.spec.packageRoot, 'arm64')
-  await mkdir(join(path, '..'), { recursive: true })
-  await writeFile(path, f.output, { mode: 0o755 })
+  const path = await publish(join(f.spec.packageRoot, 'native/bin/darwin-arm64'), f.output)
   expect(await prepareNativeExecutable(f.spec)).toBe(path)
   expect(f.spawn).not.toHaveBeenCalled()
+  f.controller.abort()
+  await expect(prepareNativeExecutable(f.spec)).rejects.toThrow()
 })
 
-it('keeps the previous executable when a build fails and reports compiler output', async () => {
+it.each(['../outside', '/absolute', '', 'a'.repeat(63), 'A'.repeat(64)])('rejects an invalid installed generation %s', async (bundle) => {
+  const f = await fixture()
+  await mkdir(f.directory, { recursive: true })
+  await writeFile(join(f.directory, 'current.json'), JSON.stringify({ bundle }))
+  await expect(nativeExecutablePath(f.directory)).rejects.toThrow()
+})
+
+it('refuses a missing executable selected by an otherwise valid receipt', async () => {
+  const f = await fixture()
+  const path = await publish(f.directory, f.output)
+  await rm(path)
+  await expect(nativeExecutablePath(f.directory)).rejects.toMatchObject({ code: 'ENOENT' })
+})
+
+it('preserves the previous generation when preparation fails and reports diagnostics', async () => {
   const f = await fixture()
   const path = await buildNativeExecutable(f.spec)
   f.setOutcome({ exitCode: 1, signal: null })
   await expect(buildNativeExecutable(f.spec)).rejects.toThrow('compiler diagnostic')
-  expect(await readFile(path)).toEqual(f.output)
+  expect(await nativeExecutablePath(f.directory)).toBe(path)
   f.setOutcome({ exitCode: null, signal: 'SIGTERM' })
   await expect(buildNativeExecutable(f.spec)).rejects.toThrow('SIGTERM')
 })
 
-it('awaits compiler cleanup and refuses to publish after cancellation', async () => {
+it('awaits cleanup and refuses a result after cancellation', async () => {
   const f = await fixture()
   f.beforeExit(async () => { f.controller.abort() })
   await expect(buildNativeExecutable(f.spec)).rejects.toThrow()
   expect(f.waitForExit).toHaveBeenCalledTimes(1)
-  await expect(readFile(nativeExecutablePath(f.spec.packageRoot, 'arm64'))).rejects.toMatchObject({ code: 'ENOENT' })
+  await expect(readFile(join(f.directory, 'current.json'))).rejects.toMatchObject({ code: 'ENOENT' })
   await expect(buildNativeExecutable(f.spec)).rejects.toThrow()
   expect(f.spawn).toHaveBeenCalledTimes(1)
 })
 
-it('reports failed compiler range observation before publishing', async () => {
+it('reports failed builder range observation before returning an executable', async () => {
   const f = await fixture()
   f.waitForExit.mockRejectedValue(new Error('compiler range observation failed'))
   await expect(buildNativeExecutable(f.spec)).rejects.toThrow('compiler range observation failed')
-  await expect(readFile(nativeExecutablePath(f.spec.packageRoot, 'arm64'))).rejects.toMatchObject({ code: 'ENOENT' })
 })
 
-it('serializes publication and cancels a competing preparation without starting another compiler', async () => {
+it('rejects a builder whose managed process range remains occupied', async () => {
+  const f = await fixture()
+  f.waitForExit.mockResolvedValue(false)
+  await expect(buildNativeExecutable(f.spec)).rejects.toThrow('did not release its managed process range')
+})
+
+it('serializes builds and cancels a competing preparation before starting it', async () => {
   const f = await fixture()
   const release: PromiseWithResolvers<void> = Promise.withResolvers()
   const entered: PromiseWithResolvers<void> = Promise.withResolvers()
@@ -132,48 +158,21 @@ it('serializes publication and cancels a competing preparation without starting
   const second = buildNativeExecutable({ ...f.spec, signal: competing.signal })
   const rejected = expect(second).rejects.toThrow()
   competing.abort()
-  try {
-    await rejected
-    expect(f.spawn).toHaveBeenCalledTimes(1)
-  } finally { release.resolve(); await first }
-  expect(await readFile(nativeExecutablePath(f.spec.packageRoot, 'arm64'))).toEqual(f.output)
+  try { await rejected; expect(f.spawn).toHaveBeenCalledTimes(1) }
+  finally { release.resolve(); await first }
 })
 
-it('reports an unsuccessful compiler even when no collected diagnostics are available', async () => {
+it('reports an unsuccessful builder without collected diagnostics', async () => {
   const f = await fixture(false)
   f.setOutcome({ exitCode: 2, signal: null })
   await expect(buildNativeExecutable(f.spec)).rejects.toThrow('preparation failed (2, null)')
 })
 
-it('preserves an invalid existing artifact location instead of treating every read error as a missing file', async () => {
-  const f = await fixture()
-  const target = nativeExecutablePath(f.spec.packageRoot, 'arm64')
-  await mkdir(target, { recursive: true })
-  await expect(buildNativeExecutable(f.spec)).rejects.toMatchObject({ code: 'EISDIR' })
-  expect((await stat(target)).isDirectory()).toBe(true)
-})
-
-it('keeps running generations immutable while publishing a newer package payload', async () => {
+it('retains an earlier generation when the builder selects a new one', async () => {
   const f = await fixture()
   const first = await buildNativeExecutable(f.spec)
-  const firstInode = (await stat(first)).ino
-  const replacement = Buffer.from('new executable')
-  f.setOutput(replacement)
+  f.setOutput(Buffer.from('new signed executable'))
   const second = await buildNativeExecutable(f.spec)
   expect(second).not.toBe(first)
   expect(await readFile(first)).toEqual(f.output)
-  expect((await stat(first)).ino).toBe(firstInode)
-  expect(await readFile(second)).toEqual(replacement)
-  expect(await readFile(nativeExecutablePath(f.spec.packageRoot, 'arm64'))).toEqual(replacement)
-})
-
-it('refuses a corrupted retained generation without replacing it', async () => {
-  const f = await fixture()
-  const path = await buildNativeExecutable(f.spec)
-  await writeFile(path, 'corrupted')
-  await expect(buildNativeExecutable(f.spec)).rejects.toThrow('does not match its content digest')
-  expect(await readFile(path, 'utf8')).toBe('corrupted')
-  await rm(path)
-  await mkdir(path)
-  await expect(buildNativeExecutable(f.spec)).rejects.toMatchObject({ code: 'EISDIR' })
 })
diff --git a/packages/experimental/cua-macos/tests/native-publication.spec.ts b/packages/experimental/cua-macos/tests/native-publication.spec.ts
new file mode 100644
index 0000000000..0b80ab04f5
--- /dev/null
+++ b/packages/experimental/cua-macos/tests/native-publication.spec.ts
@@ -0,0 +1,18 @@
+/** The ordinary unit lane executes the native application publication regressions. */
+import { execFileSync } from 'node:child_process'
+import { fileURLToPath } from 'node:url'
+import { expect, it } from 'vitest'
+
+it.skipIf(process.platform === 'win32')('preserves signed generations and rejects incomplete application publication', () => {
+  const output = execFileSync('python3', [fileURLToPath(new URL('../native/tests/test_build_app.py', import.meta.url))], {
+    encoding: 'utf8', timeout: 30_000, stdio: ['ignore', 'pipe', 'pipe'],
+  })
+  expect(output).toBe('')
+})
+
+it.skipIf(process.platform === 'win32')('accepts shallow bare reference paths in native test helpers', () => {
+  const output = execFileSync('python3', [fileURLToPath(new URL('../native/tests/test_native_test_support.py', import.meta.url))], {
+    encoding: 'utf8', timeout: 30_000, stdio: ['ignore', 'pipe', 'pipe'],
+  })
+  expect(output).toBe('')
+})
diff --git a/packages/experimental/cua-macos/tests/shared-native.spec.ts b/packages/experimental/cua-macos/tests/shared-native.spec.ts
index 3fedad58e1..cef346ab9b 100644
--- a/packages/experimental/cua-macos/tests/shared-native.spec.ts
+++ b/packages/experimental/cua-macos/tests/shared-native.spec.ts
@@ -280,6 +280,19 @@ describe.skipIf(process.platform === 'win32')('shared native Unix connection', (
     expect(String(await reply)).toContain('created')
   })
 
+  it('preserves the native startup failure code and message after managed cleanup', async () => {
+    const failure = { type: 'error', code: 'NATIVE_RUNTIME_CONFLICT', message: 'Another helper version is using this executable path' }
+    const output = JSON.stringify(failure)
+    const f = await fixture({ launch: () => ({ ...launcherFixture(),
+      done: Promise.resolve({ exitCode: 1, signal: null }),
+      collected: { stdout: { readFrom: () => ({ text: output, nextOffset: output.length, lossy: false }) } },
+    }) })
+    const channel = f.open()
+    await expect(channel.done).rejects.toMatchObject({ code: failure.code, message: failure.message })
+    await channel.waitForClose()
+    expect(f.hellos).toEqual([])
+  })
+
   it('returns a failed launcher outcome with its retained stderr and releases the managed range', async () => {
     const f = await fixture({ launch: () => ({ ...launcherFixture(),
       done: Promise.resolve({ exitCode: 12, signal: null }),
diff --git a/packages/experimental/cua/package.json b/packages/experimental/cua/package.json
index 2cc283a9e6..f4b4d82aa3 100644
--- a/packages/experimental/cua/package.json
+++ b/packages/experimental/cua/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-cua",
   "description": "Shared Computer Use application objects, authorization, and logged tool execution",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/cua/src/index.ts b/packages/experimental/cua/src/index.ts
index fd045662ba..e9fee3a268 100644
--- a/packages/experimental/cua/src/index.ts
+++ b/packages/experimental/cua/src/index.ts
@@ -39,7 +39,7 @@ export interface CuaConfig {
     /** Unbranded digest at the profile configuration boundary; admitted by the Config schema. */
     id: string
   }>
-  /** Absolute native helper override; omission prepares the package-owned executable. */
+  /** Absolute executable inside the signed macOS helper .app; omission prepares the package-owned application. */
   helperPath?: string
   /** Maximum time in milliseconds for native component preparation. */
   buildTimeoutMs: number
diff --git a/packages/experimental/forge-bundle/package.json b/packages/experimental/forge-bundle/package.json
index 1a64e98383..b66fbe47b0 100644
--- a/packages/experimental/forge-bundle/package.json
+++ b/packages/experimental/forge-bundle/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-forge-bundle",
   "description": "Experimental change request panel and worktree option for Sessions in Git repositories",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/forge-github/README.i18n.yaml b/packages/experimental/forge-github/README.i18n.yaml
index beb3f29db8..b096b71898 100644
--- a/packages/experimental/forge-github/README.i18n.yaml
+++ b/packages/experimental/forge-github/README.i18n.yaml
@@ -9,17 +9,17 @@
   en: 1c2533aa62dd459c
   zh: 3d26837df2bbf525
 /deepseek-ai-dsh-experimental-forge-github/summary:
-  en: 0d849f74aad525c4
-  zh: f16262134132b354
+  en: c64194798b228b23
+  zh: 5b1a145621f0c90a
 /deepseek-ai-dsh-experimental-forge-github/table-of-contents:
   en: d152484eb41ac6b4
   zh: 2f8a621b991260a1
 /deepseek-ai-dsh-experimental-forge-github/use-this-package:
-  en: ed1eb18704c54406
-  zh: 717c303b2d9d7244
+  en: f2bd06d91b744305
+  zh: ad956b539a43b880
 /deepseek-ai-dsh-experimental-forge-github/understand-the-implementation:
-  en: 194951c8b5093f7d
-  zh: 9c5ffaa9e531bd1f
+  en: 90f3c10096be642a
+  zh: 4e1b663c52019ac2
 /deepseek-ai-dsh-experimental-forge-github/further-exploration:
   en: d377d5fd9d9f190e
   zh: 920bcbfdb8c993f2
@@ -30,8 +30,8 @@
   en: 26b946af4b742e17
   zh: 00b34f0721ac72f6
 /deepseek-ai-dsh-experimental-forge-github/known-limitations-and-deferred-work:
-  en: 14408605565310b8
-  zh: 750c163b9af160ce
+  en: 37308d9458bb9316
+  zh: 3d4188f3e94af282
 /deepseek-ai-dsh-experimental-forge-github/known-limitations-and-deferred-work/dev-note:
   en: e67f633dc6fe7773
   zh: 3bb0c20c93f16f98
diff --git a/packages/experimental/forge-github/README.md b/packages/experimental/forge-github/README.md
index 9f26657f4b..2d9e2ce57a 100644
--- a/packages/experimental/forge-github/README.md
+++ b/packages/experimental/forge-github/README.md
@@ -9,7 +9,7 @@ English | [中文](README.zh.md)
 
 ## Summary
 
-Read GitHub and GitHub Enterprise pull requests for `ctx.forge` with the GitHub CLI that is already signed in on the host. One GraphQL query per host and poll reads state, changed lines, checks, review decision, mergeability, and unresolved review threads for every due pull request.
+Read GitHub and GitHub Enterprise pull requests for `ctx.forge` with the GitHub CLI that is already signed in on the host. Each poll batches pull requests by host to read state, changed lines, checks, review decision, mergeability, and unresolved review threads for every due pull request.
 
 ## Table of Contents
 
@@ -38,12 +38,16 @@ The provider runs `gh` as a host process, even when Sessions execute commands in
 
 The provider serves a remote URL in `https`, `http`, `ssh`, or `git` form, or in scp form such as `git@github.com:owner/name.git`, when its host is configured. HTTP(S) remotes retain custom ports in the host identity; SSH and Git transport ports are excluded. It serves pull request URLs of the form `https://<host>/<owner>/<name>/pull/<number>` with any trailing path, query, or fragment, and builds that form without the suffix as the canonical URL. A readiness probe runs `gh auth status --hostname <host>`: exit status 0 is `ready`, another exit status is `unauthenticated` with the first diagnostic line, and a `gh` that cannot start is `unavailable`. A head lookup returns up to 20 open pull requests whose head is the branch, newest first, excluding pull requests from forks; a lookup of the default branch returns none.
 
-Check runs map to `pending` until completed, then to `success`, `failure` (failure, timed out, startup failure, or action required), `cancelled`, `skipped`, or `neutral`. Check runs keep their start and completion times. Commit status contexts map `SUCCESS` to `success`, `FAILURE` and `ERROR` to `failure`, and every other state to `pending`, and carry no times. A GraphQL `NOT_FOUND` error becomes a `not-found` failure. A response without GraphQL data or errors, including an HTTP error JSON body, uses the first stderr diagnostic or the body's message. Authentication diagnostics become `unauthenticated`; rate limits and other failures become `unavailable`. Head lookups preserve the same diagnostic in their rejection.
+Polling returns the first 100 head-commit check contexts without following pages. An incomplete preview sets `checksTruncated` and keeps GitHub’s aggregate state; its counts do not describe the full list. `fetchChecks(ref, signal)` reads complete details only for the requested PR, pinning continuation pages to the first response’s rollup. The combined UTF-8 JSON responses must fit `maxOutputBytes`; excess returns `too-large`. Failed or non-advancing pages fail only this detail read and leave polling results intact. Runs with the same application, workflow, event, and check name keep only the newest run id; a queued replacement supersedes an older completed run. Runs without a numeric database id are retained by node id because their relative age is unknown. Commit status contexts keep the newest result per context name. Complete lists derive their indicator from these results; unknown context kinds retain GitHub’s aggregate state.
+
+Unfinished check runs and completed runs with stale, missing, or unrecognized conclusions map to `pending`. Other completed checks map to `success`, `failure` (failure, timed out, startup failure, or action required), `cancelled`, `skipped`, or `neutral`. Cancelled checks keep the rollup non-passing. Check runs keep their start and completion times. Commit status contexts map `SUCCESS` to `success`, `FAILURE` and `ERROR` to `failure`, and every other state to `pending`, and carry no times. A GraphQL `NOT_FOUND` error becomes a `not-found` failure. A response without GraphQL data or errors, including an HTTP error JSON body, uses the first stderr diagnostic or the body's message. Authentication diagnostics become `unauthenticated`; oversized check pages become `too-large`; rate limits and other failures become `unavailable`. Head lookups preserve the same diagnostic in their rejection.
 
 A pull request is `mergeReady` when it is open, not a draft, GitHub reports its merge state as `CLEAN`, `HAS_HOOKS`, or `UNSTABLE`, and the signed-in user has write, maintain, or admin permission. `mergeMethods` lists the squash, merge-commit, and rebase methods the repository allows, the user's default merge method first. Marking ready runs `gh pr ready <number> --repo <host>/<owner>/<name>`. Merging calls `PUT repos/<owner>/<name>/pulls/<number>/merge` through `gh api` with the method and the expected head SHA, so GitHub refuses once new commits arrived, which is reported as `stale`. Unlike `gh pr merge`, it never enables auto-merge, never joins a merge queue, and never deletes the head branch. A refused action reports GitHub's message, and a diagnostic that mentions authentication becomes `unauthenticated`.
 
 `diff` runs `gh pr diff <number> --repo <host>/<owner>/<name> --color never`. `fileText` reads `repos/<owner>/<name>/contents/<path>?ref=<commit>` through `gh api` with the raw media type and accepts only a full 40- or 64-digit hexadecimal commit. `fileUrl` returns `https://<host>/<owner>/<name>/blob/<commit>/<path>`. Both paths percent-encode each segment. A refused read becomes `not-found` for HTTP 404, `unauthenticated` for a diagnostic that mentions authentication, `too-large` for GitHub's `too_large` error, which a diff over its own size limit draws, and `unavailable` otherwise, with GitHub's message. A read whose output exceeds `maxOutputBytes` becomes `too-large`, and one that outlives `timeoutMs` becomes `unavailable`.
 
+Review submission checks the current pull request head, then posts a single inline comment or one completed review through the REST API with an explicit `commit_id`. Multiline comments carry their side and inclusive start and end lines. Review decisions are Comment, Approve, and Request changes. JSON request bodies travel on stdin. The provider never retries a mutation: a timeout, unexpected response, or server error after dispatch returns an unknown outcome that the caller must reconcile on GitHub. A commit arriving between the check and the write can make the explicitly addressed review outdated; GitHub does not offer an atomic head precondition on these endpoints.
+
 -----
 
 <a id="understand-the-implementation"></a>
@@ -52,7 +56,7 @@ A pull request is `mergeReady` when it is open, not a draft, GitHub reports its
 <details>
 <summary>Implementation internals — click to expand</summary>
 
-A fetch groups references by host and sends one `gh api graphql` query per host. The query inlines validated owner, name, and number values and gives each pull request an alias, so partial GraphQL errors fail only their own aliases. `gh` exits nonzero on partial errors but still prints the complete response, which the provider parses before it inspects the exit code.
+A fetch groups references by host and sends one initial `gh api graphql` query per host. Continuation queries use the original rollup node id, so a changed pull request head cannot mix commits within one check list. The query inlines validated owner, name, and number values and gives each pull request an alias, so partial GraphQL errors fail only their own aliases. `gh` exits nonzero on partial errors but still prints the complete response, which the provider parses before it inspects the exit code.
 
 | Source | Responsibility |
 |---|---|
@@ -89,9 +93,9 @@ None. Provider output reaches only host-side watchers.
 <a id="known-limitations-and-deferred-work"></a>
 
 - **GitHub CLI on the host** — `gh` must be installed and signed in for each configured host; tokens in environment variables are not forwarded. Hosts missing from `hosts` are never read, including references retained across configuration changes. A status fetch returns `unavailable` for those references; a head lookup rejects before starting `gh`.
-- **First 100 checks and review threads** — `checksTruncated` marks a head commit with more checks; unresolved threads after the first 100 are not counted.
+- **First 100 review threads** — unresolved threads after the first 100 are not counted.
 - **No fork discovery** — head lookups exclude pull requests whose head is in another repository.
-- **Rate limits** — every poll costs one GraphQL query per host against the signed-in account's rate limit.
+- **Rate limits** — every poll costs one GraphQL query per host, plus one query per additional page of 100 check records, against the signed-in account’s rate limit.
 - **No merge queue** — a base branch that requires a merge queue refuses a direct merge, and the provider never queues one.
 
 <a id="dev-note"></a>
diff --git a/packages/experimental/forge-github/README.zh.md b/packages/experimental/forge-github/README.zh.md
index e1461f49d6..1ac57ffa7d 100644
--- a/packages/experimental/forge-github/README.zh.md
+++ b/packages/experimental/forge-github/README.zh.md
@@ -9,7 +9,7 @@ kind: "package-reference"
 
 ## 概述
 
-借助宿主上已登录的 GitHub CLI，为 `ctx.forge` 读取 GitHub 与 GitHub Enterprise 的 pull request。每次轮询对每个主机只发一个 GraphQL 查询，读取所有到期 pull request 的状态、改动行数、检查、评审结论、可合并性与未解决的评审讨论。
+借助宿主上已登录的 GitHub CLI，为 `ctx.forge` 读取 GitHub 与 GitHub Enterprise 的 pull request。每次轮询按主机批量查询，读取所有到期 pull request 的状态、改动行数、检查、评审结论、可合并性与未解决的评审讨论。
 
 ## 目录
 
@@ -38,12 +38,16 @@ kind: "package-reference"
 
 当主机在配置中时，提供方服务 `https`、`http`、`ssh`、`git` 形式的远端 URL，以及 `git@github.com:owner/name.git` 这类 scp 形式。HTTP(S) 远端在主机标识中保留自定义端口；SSH 和 Git 传输端口不计入主机标识。它服务 `https://<host>/<owner>/<name>/pull/<number>` 形式的 pull request URL，允许其后附带任意路径、查询或片段，并以去掉这些后缀的形式作为规范 URL。就绪探测运行 `gh auth status --hostname <host>`：退出码为 0 时为 `ready`，其他退出码为 `unauthenticated` 并带第一行诊断，`gh` 无法启动时为 `unavailable`。按 head 分支查找时，最多返回 20 个以该分支为 head 的打开状态 pull request，按创建时间从新到旧排列，不包含来自 fork 的 pull request；查找默认分支时返回空结果。
 
-检查运行（check run）在完成前映射为 `pending`，完成后映射为 `success`、`failure`（失败、超时、启动失败或需要操作）、`cancelled`、`skipped` 或 `neutral`。检查运行保留其开始与完成时间。提交状态上下文把 `SUCCESS` 映射为 `success`，把 `FAILURE` 与 `ERROR` 映射为 `failure`，其余状态均映射为 `pending`，且不带时间。GraphQL 的 `NOT_FOUND` 错误转为 `not-found` 失败。响应不含 GraphQL data 或 errors 时（包括 HTTP 错误 JSON），使用 stderr 的首条诊断或响应体的 message。认证诊断转为 `unauthenticated`；限流与其他失败转为 `unavailable`。head 查找在拒绝时保留相同诊断。
+轮询只返回 head 提交的前 100 条检查上下文，不追读后续页。预览不完整时设置 `checksTruncated` 并保留 GitHub 的汇总状态，局部计数不代表完整列表。`fetchChecks(ref, signal)` 仅按需读取指定 PR 的完整详情，后续页固定使用首次响应的 rollup。所有 JSON 响应的 UTF-8 字节总量受 `maxOutputBytes` 限制，超出时返回 `too-large`。分页失败或游标不前进只使此次详情读取失败，保留轮询结果。同一应用、工作流、触发事件与检查名称的运行只保留运行 id 最新的一条；新的排队运行会替代旧的已完成运行。缺少数字数据库 id 的运行无法确定先后，因此按节点 id 保留。提交状态上下文按名称保留最新结果。完整列表从这些结果计算总体指示；未知上下文类型保留 GitHub 的汇总状态。
+
+未完成的检查运行（check run），以及结论已过期、缺失或无法识别的已完成运行，均映射为 `pending`。其他已完成的检查映射为 `success`、`failure`（失败、超时、启动失败或需要操作）、`cancelled`、`skipped` 或 `neutral`。已取消的检查使汇总保持未通过状态。检查运行保留其开始与完成时间。提交状态上下文把 `SUCCESS` 映射为 `success`，把 `FAILURE` 与 `ERROR` 映射为 `failure`，其余状态均映射为 `pending`，且不带时间。GraphQL 的 `NOT_FOUND` 错误转为 `not-found` 失败。响应不含 GraphQL data 或 errors 时（包括 HTTP 错误 JSON），使用 stderr 的首条诊断或响应体的 message。认证诊断转为 `unauthenticated`；超出输出大小上限的检查分页转为 `too-large`；限流与其他失败转为 `unavailable`。head 查找在拒绝时保留相同诊断。
 
 pull request 处于打开状态、不是草稿、GitHub 报告其合并状态为 `CLEAN`、`HAS_HOOKS` 或 `UNSTABLE`，且已登录用户具有 write、maintain 或 admin 权限时，`mergeReady` 为真。`mergeMethods` 列出仓库允许的压缩合并、合并提交与变基合并方式，用户默认的合并方式排在最前。标记为可评审运行 `gh pr ready <number> --repo <host>/<owner>/<name>`。合并经 `gh api` 调用 `PUT repos/<owner>/<name>/pulls/<number>/merge`，带上合并方式与预期的 head SHA，因此有新提交到达后 GitHub 会拒绝，报告为 `stale`。与 `gh pr merge` 不同，它从不启用自动合并、从不加入合并队列，也从不删除 head 分支。被拒绝的操作报告 GitHub 的原因，提到身份验证的诊断转为 `unauthenticated`。
 
 `diff` 运行 `gh pr diff <number> --repo <host>/<owner>/<name> --color never`。`fileText` 经 `gh api` 以 raw 媒体类型读取 `repos/<owner>/<name>/contents/<path>?ref=<commit>`，只接受完整的 40 位或 64 位十六进制提交。`fileUrl` 返回 `https://<host>/<owner>/<name>/blob/<commit>/<path>`。两者的路径都逐段做百分号编码。被拒绝的读取在 HTTP 404 时为 `not-found`，诊断提到身份验证时为 `unauthenticated`，GitHub 报告 `too_large` 错误时（diff 超过其自身大小上限即会如此）为 `too-large`，其余为 `unavailable`，并带有 GitHub 的原因。输出超过 `maxOutputBytes` 的读取为 `too-large`，超过 `timeoutMs` 的为 `unavailable`。
 
+提交评审时先检查 PR 当前的 head，再通过 REST API 发布单条行内评论或一次完整评审，并显式指定 `commit_id`。多行评论携带所属侧及包含端点的起止行号。评审结论为“评论”“批准”或“请求更改”。JSON 请求正文通过标准输入传递。provider 不会重试写操作；发送后的超时、异常响应或服务端错误会返回结果不明，由调用方到 GitHub 核对。检查与写入之间到来的新提交可能让已明确定位到旧提交的评审过时；GitHub 的这些接口不提供原子的 head 前置条件。
+
 -----
 
 <a id="understand-the-implementation"></a>
@@ -52,7 +56,7 @@ pull request 处于打开状态、不是草稿、GitHub 报告其合并状态为
 <details>
 <summary>实现细节——点击展开</summary>
 
-一次读取按主机对引用分组，每个主机发送一个 `gh api graphql` 查询。查询内联经过校验的 owner、name 与编号，并为每个 pull request 设置别名，因此局部 GraphQL 错误只影响对应的别名。出现局部错误时 `gh` 以非零状态退出，但仍会输出完整响应；提供方先解析该响应，再检查退出码。
+一次读取按主机对引用分组，每个主机先发送一个 `gh api graphql` 查询。后续分页使用原汇总节点 id，因此 PR 的 head 变化不会让同一检查列表混入其他提交。查询内联经过校验的 owner、name 与编号，并为每个 pull request 设置别名，因此局部 GraphQL 错误只影响对应的别名。出现局部错误时 `gh` 以非零状态退出，但仍会输出完整响应；提供方先解析该响应，再检查退出码。
 
 | 源码 | 职责 |
 |---|---|
@@ -89,9 +93,9 @@ pull request 处于打开状态、不是草稿、GitHub 报告其合并状态为
 <a id="known-limitations-and-deferred-work"></a>
 
 - **宿主需要 GitHub CLI**——必须安装 `gh` 并为每个已配置主机登录；环境变量中的令牌不会被转发。不在 `hosts` 中的主机永远不会被读取，包括配置变更后保留的引用。状态读取为这些引用返回 `unavailable`；head 查找会在启动 `gh` 前拒绝。
-- **前 100 个检查与评审讨论**——head 提交的检查超过上限时以 `checksTruncated` 标记；前 100 个之后的未解决讨论不计入。
+- **前 100 个评审讨论**——前 100 个之后的未解决讨论不计入。
 - **不发现 fork**——按 head 分支查找时，不包含 head 位于其他仓库的 pull request。
-- **速率限制**——每次轮询都会以已登录账号的速率配额为每个主机消耗一次 GraphQL 查询。
+- **速率限制**——每次轮询以已登录账号的速率配额为每个主机消耗一次 GraphQL 查询；检查记录每多一页（100 条），再消耗一次查询。
 - **不支持合并队列**——要求合并队列的基准分支会拒绝直接合并，提供方也不会把变更请求加入队列。
 
 <a id="dev-note"></a>
diff --git a/packages/experimental/forge-github/package.json b/packages/experimental/forge-github/package.json
index 437befde5f..124f18bfbc 100644
--- a/packages/experimental/forge-github/package.json
+++ b/packages/experimental/forge-github/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-forge-github",
   "description": "GitHub provider for the experimental forge registry, read through the GitHub CLI on the host",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -41,6 +41,7 @@
   },
   "devDependencies": {
     "@deepseek-ai/cordis": "workspace:~",
+    "@deepseek-ai/dsh-brand": "workspace:*",
     "@deepseek-ai/dsh-experimental-forge": "workspace:*",
     "@deepseek-ai/dsh-subprocess": "workspace:*"
   }
diff --git a/packages/experimental/forge-github/src/gh.ts b/packages/experimental/forge-github/src/gh.ts
index bc24d6c586..1b4e7f561a 100644
--- a/packages/experimental/forge-github/src/gh.ts
+++ b/packages/experimental/forge-github/src/gh.ts
@@ -14,7 +14,7 @@ export interface GhOutput {
 }
 
 /** Runs `gh` with literal arguments; rejects when the process cannot run to an exit code. */
-export type GhRunner = (args: readonly string[], signal: AbortSignal) => Promise<GhOutput>
+export type GhRunner = (args: readonly string[], signal: AbortSignal, input?: string) => Promise<GhOutput>
 
 /** Resolved executable and limits for `gh`. */
 export interface GhConfig {
@@ -50,11 +50,11 @@ export class GhOutputLimitError extends Error {
  * @returns the runner.
  */
 export function ghRunner(config: GhConfig): GhRunner {
-  return async (args, signal) => {
+  return async (args, signal, input) => {
     const result = await execa(config.ghCommand, args, {
       env: { ...scrubbedParentEnv(), GH_PROMPT_DISABLED: '1', GH_NO_UPDATE_NOTIFIER: '1', GH_PAGER: '', NO_COLOR: '1', CLICOLOR: '0' },
       extendEnv: false,
-      stdin: 'ignore',
+      ...input === undefined ? { stdin: 'ignore' as const } : { input },
       reject: false,
       timeout: config.timeoutMs,
       cancelSignal: signal,
diff --git a/packages/experimental/forge-github/src/graphql.ts b/packages/experimental/forge-github/src/graphql.ts
index f073e687f4..a7d0a8d16b 100644
--- a/packages/experimental/forge-github/src/graphql.ts
+++ b/packages/experimental/forge-github/src/graphql.ts
@@ -1,5 +1,6 @@
 /** GitHub GraphQL documents and their mapping into provider-neutral results. */
 
+import type { Branded } from '@deepseek-ai/dsh-brand'
 import { changeRequestKey } from '@deepseek-ai/dsh-experimental-forge'
 import type {
   ChangeRequestCheck, ChangeRequestKey, ChangeRequestRef, ChangeRequestSnapshot, CheckState, ChecksRollup, ForgeFailure, ForgeRepository,
@@ -8,19 +9,29 @@ import type {
 import { z } from 'zod'
 import { checkedRepository } from './urls.ts'
 
+const CHECK_FIELDS = `pageInfo { hasNextPage endCursor }
+  nodes {
+    __typename
+    ... on CheckRun {
+      id databaseId name status conclusion detailsUrl startedAt completedAt
+      checkSuite { app { id } workflowRun { event workflow { id name } } }
+    }
+    ... on StatusContext { context state targetUrl createdAt }
+  }`
+
 const PULL_REQUEST_FIELDS = `number url title state isDraft updatedAt closedAt
   author { login }
   headRefName headRefOid baseRefName additions deletions mergeable mergeStateStatus reviewDecision
   reviewThreads(first: 100) { nodes { isResolved } }
-  commits(last: 1) { nodes { commit { statusCheckRollup { state contexts(first: 100) {
-    pageInfo { hasNextPage }
-    nodes {
-      __typename
-      ... on CheckRun { name status conclusion detailsUrl startedAt completedAt checkSuite { workflowRun { workflow { name } } } }
-      ... on StatusContext { context state targetUrl }
-    }
+  commits(last: 1) { nodes { commit { statusCheckRollup { id state contexts(first: 100) {
+    ${CHECK_FIELDS}
   } } } } }`
 
+/** Continue reading the same commit's rollup even if the pull request head moves. */
+export const CHECKS_QUERY = `query($id: ID!, $cursor: String!) {
+  node(id: $id) { ... on StatusCheckRollup { contexts(first: 100, after: $cursor) { ${CHECK_FIELDS} } } }
+}`
+
 const REPOSITORY_FIELDS = 'squashMergeAllowed mergeCommitAllowed rebaseMergeAllowed viewerPermission viewerDefaultMergeMethod'
 
 /** Head-branch lookup; variables `owner`, `name`, and `branch` are passed as strings. */
@@ -33,6 +44,8 @@ export const HEAD_QUERY = `query($owner: String!, $name: String!, $branch: Strin
 
 const checkRunSchema = z.object({
   __typename: z.literal('CheckRun'),
+  id: z.string(),
+  databaseId: z.number().int().nonnegative().nullable(),
   name: z.string(),
   status: z.string(),
   conclusion: z.string().nullable(),
@@ -40,17 +53,31 @@ const checkRunSchema = z.object({
   startedAt: z.string().nullable(),
   completedAt: z.string().nullable(),
   checkSuite: z.object({
-    workflowRun: z.object({ workflow: z.object({ name: z.string() }) }).nullable(),
+    app: z.object({ id: z.string() }).nullable(),
+    workflowRun: z.object({ event: z.string(), workflow: z.object({ id: z.string(), name: z.string() }) }).nullable(),
   }).nullable(),
 })
 
 const statusContextSchema = z.object({
   __typename: z.literal('StatusContext'),
   context: z.string(),
+  createdAt: z.iso.datetime(),
   state: z.string(),
   targetUrl: z.string().nullable(),
 })
 
+const checkPageSchema = z.object({
+  pageInfo: z.object({ hasNextPage: z.boolean(), endCursor: z.string().nullable() }),
+  nodes: z.array(z.unknown()),
+})
+
+/** One validated page of check contexts or a failure that prevents publishing a partial count. */
+export type CheckPageResult = { readonly ok: true; readonly page: z.infer<typeof checkPageSchema> }
+  | { readonly ok: false; readonly failure: ForgeFailure }
+
+/** Opaque GitHub node id that pins check pagination to one commit's rollup. */
+type RollupId = Branded<'GitHubStatusCheckRollupId'>
+
 const pullRequestSchema = z.object({
   url: z.string(),
   title: z.string(),
@@ -72,8 +99,9 @@ const pullRequestSchema = z.object({
     nodes: z.array(z.object({
       commit: z.object({
         statusCheckRollup: z.object({
+          id: z.string().transform(value => value as RollupId),
           state: z.string(),
-          contexts: z.object({ pageInfo: z.object({ hasNextPage: z.boolean() }), nodes: z.array(z.unknown()) }),
+          contexts: checkPageSchema,
         }).nullable(),
       }),
     })),
@@ -180,14 +208,19 @@ export function snapshotQuery(refs: readonly ChangeRequestRef[]): SnapshotQuery
  * Map a snapshot response, including GitHub's partial-error form, into one
  * result per alias target. Path-scoped errors apply to their repository or
  * pull request; errors without a path apply to every unresolved target. A
- * repository without readable merge settings offers no merge.
+ * repository without readable merge settings offers no merge. Polling returns
+ * the first check page; an explicit detail read can complete its pagination.
  * @param body - parsed JSON printed by `gh api graphql`.
  * @param query - the query that produced the response.
- * @returns a snapshot or failure for every target.
+ * @param readChecks - optional detail reader for the same commit; omission returns the first page with its truncation flag.
+ * @returns a snapshot with its check truncation flag, or a failure, for every target.
  */
-export function mapSnapshotResponse(body: unknown, query: SnapshotQuery): Map<ChangeRequestKey, ChangeRequestSnapshot | ForgeFailure> {
+export async function mapSnapshotResponse(
+  body: unknown, query: SnapshotQuery, readChecks?: (id: RollupId, cursor: string) => Promise<CheckPageResult>,
+): Promise<Map<ChangeRequestKey, ChangeRequestSnapshot | ForgeFailure>> {
   const results = new Map<ChangeRequestKey, ChangeRequestSnapshot | ForgeFailure>()
   const parsed = responseSchema.safeParse(body)
+  const repositories = new Set([...query.targets.keys()].map(alias => alias.split('.')[0]))
   for (const [alias, ref] of query.targets) {
     const key = changeRequestKey(ref)
     if (!parsed.success) {
@@ -197,18 +230,52 @@ export function mapSnapshotResponse(body: unknown, query: SnapshotQuery): Map<Ch
     const [repositoryAlias = '', pullAlias = ''] = alias.split('.')
     const errors = parsed.data.errors ?? []
     const error = errors.find(entry => entry.path?.[0] === repositoryAlias && (entry.path.length === 1 || entry.path[1] === pullAlias))
-      ?? errors.find(entry => entry.path === undefined)
+      ?? errors.find(entry => entry.path === undefined || !repositories.has(String(entry.path[0])))
     const raw = parsed.data.data?.[repositoryAlias]?.[pullAlias]
     const node = pullRequestSchema.safeParse(raw)
     const settings = repositorySchema.safeParse(parsed.data.data?.[repositoryAlias])
-    if (node.success) results.set(key, toSnapshot(ref, node.data, settings.success ? settings.data : undefined))
-    else if (error !== undefined) results.set(key, { code: error.type === 'NOT_FOUND' ? 'not-found' : 'unavailable', message: error.message })
+    if (node.success) {
+      const rollup = node.data.commits.nodes[0]?.commit.statusCheckRollup
+      if (rollup !== undefined && rollup !== null) {
+        const cursors = new Set<string>()
+        while (readChecks !== undefined && rollup.contexts.pageInfo.hasNextPage) {
+          const cursor = rollup.contexts.pageInfo.endCursor
+          if (cursor === null || cursors.has(cursor)) {
+            results.set(key, { code: 'unavailable', message: 'GitHub check pagination did not advance' })
+            break
+          }
+          cursors.add(cursor)
+          const next = await readChecks(rollup.id, cursor)
+          if (!next.ok) { results.set(key, next.failure); break }
+          rollup.contexts.nodes.push(...next.page.nodes)
+          rollup.contexts.pageInfo = next.page.pageInfo
+        }
+      }
+      if (!results.has(key)) results.set(key, toSnapshot(ref, node.data, settings.success ? settings.data : undefined))
+    } else if (error !== undefined) results.set(key, { code: error.type === 'NOT_FOUND' ? 'not-found' : 'unavailable', message: error.message })
     else if (raw === null || raw === undefined) results.set(key, { code: 'not-found', message: 'pull request not found' })
     else results.set(key, { code: 'unavailable', message: 'unexpected pull request fields' })
   }
   return results
 }
 
+/**
+ * Validate a continuation response before adding its checks to the snapshot.
+ * @param body - parsed GraphQL response for a rollup node.
+ * @returns the complete page or a failure; partial-error pages are not accepted.
+ */
+export function mapCheckPageResponse(body: unknown): CheckPageResult {
+  const parsed = z.object({
+    data: z.object({ node: z.object({ contexts: checkPageSchema }).nullable() }).nullable().optional(),
+    errors: z.array(z.object({ message: z.string() })).optional(),
+  }).safeParse(body)
+  if (parsed.success && !parsed.data.errors?.length && parsed.data.data?.node != null) {
+    return { ok: true, page: parsed.data.data.node.contexts }
+  }
+  return { ok: false, failure: { code: 'unavailable',
+    message: parsed.success ? parsed.data.errors?.[0]?.message ?? 'GitHub check page is unavailable' : 'unexpected GitHub check page' } }
+}
+
 /**
  * Map a head-branch lookup of {@link HEAD_QUERY}, which selects open pull requests, into change requests.
  * @param body - parsed JSON printed by `gh api graphql`.
@@ -226,13 +293,27 @@ export function mapHeadResponse(body: unknown, repository: ForgeRepository, bran
   return found.pullRequests.nodes.filter(node => !node.isCrossRepository).map(node => ({ repository, number: node.number }))
 }
 
-function toSnapshot(ref: ChangeRequestRef, node: PullRequestNode, settings: RepositoryNode | undefined): ChangeRequestSnapshot {
+function toSnapshot(
+  ref: ChangeRequestRef, node: PullRequestNode, settings: RepositoryNode | undefined,
+): ChangeRequestSnapshot | ForgeFailure {
   const rollup = node.commits.nodes[0]?.commit.statusCheckRollup ?? null
-  const checks: ChangeRequestCheck[] = []
+  const latest = new Map<string, { order: number; check: ChangeRequestCheck }>()
+  let unknownContext = false
+  const retain = (key: string, order: number, check: ChangeRequestCheck): void => {
+    const previous = latest.get(key)
+    if (previous === undefined || order > previous.order) {
+      latest.set(key, { order, check })
+    }
+  }
   for (const context of rollup?.contexts.nodes ?? []) {
     const run = checkRunSchema.safeParse(context)
     if (run.success) {
-      checks.push({
+      const suite = run.data.checkSuite
+      const workflow = suite?.workflowRun
+      // A queued run may have neither a database id nor timestamps. Retain such runs by node id rather than guessing their age.
+      const key = run.data.databaseId === null ? JSON.stringify(['unranked-run', run.data.id])
+        : JSON.stringify(['run', run.data.name, suite?.app?.id, workflow?.workflow.id, workflow?.event])
+      retain(key, run.data.databaseId ?? 0, {
         name: run.data.name,
         state: checkRunState(run.data.status, run.data.conclusion),
         url: run.data.detailsUrl,
@@ -244,7 +325,7 @@ function toSnapshot(ref: ChangeRequestRef, node: PullRequestNode, settings: Repo
     }
     const status = statusContextSchema.safeParse(context)
     if (status.success) {
-      checks.push({
+      retain(JSON.stringify(['status', status.data.context]), Date.parse(status.data.createdAt), {
         name: status.data.context,
         state: statusContextState(status.data.state),
         url: status.data.targetUrl,
@@ -252,8 +333,18 @@ function toSnapshot(ref: ChangeRequestRef, node: PullRequestNode, settings: Repo
         startedAt: null,
         completedAt: null,
       })
+    } else if (typeof context === 'object' && context !== null && '__typename' in context
+      && (context.__typename === 'CheckRun' || context.__typename === 'StatusContext')) {
+      return { code: 'unavailable', message: 'unexpected GitHub check fields' }
+    } else {
+      unknownContext = true
     }
   }
+  const checks = [...latest.values()].map(value => value.check)
+  // An incomplete list cannot determine the overall outcome.
+  const summary: ChecksRollup = rollup?.contexts.pageInfo.hasNextPage || unknownContext || checks.length === 0 ? checksRollup(rollup?.state)
+    : checks.some(check => check.state === 'failure' || check.state === 'cancelled') ? 'failure'
+      : checks.some(check => check.state === 'pending') ? 'pending' : 'success'
   return {
     ref,
     url: node.url,
@@ -272,7 +363,7 @@ function toSnapshot(ref: ChangeRequestRef, node: PullRequestNode, settings: Repo
     mergeMethods: settings === undefined ? [] : mergeMethods(settings),
     reviewDecision: reviewDecision(node.reviewDecision),
     checks,
-    checksRollup: checksRollup(rollup?.state),
+    checksRollup: summary,
     checksTruncated: rollup?.contexts.pageInfo.hasNextPage ?? false,
     unresolvedThreads: node.reviewThreads.nodes.filter(thread => !thread.isResolved).length,
     updatedAt: node.updatedAt,
@@ -300,13 +391,14 @@ function checkRunState(status: string, conclusion: string | null): CheckState {
   if (status !== 'COMPLETED') return 'pending'
   switch (conclusion) {
     case 'SUCCESS': return 'success'
+    case 'ACTION_REQUIRED':
     case 'FAILURE':
     case 'TIMED_OUT':
-    case 'STARTUP_FAILURE':
-    case 'ACTION_REQUIRED': return 'failure'
+    case 'STARTUP_FAILURE': return 'failure'
     case 'CANCELLED': return 'cancelled'
     case 'SKIPPED': return 'skipped'
-    default: return 'neutral'
+    case 'NEUTRAL': return 'neutral'
+    default: return 'pending'
   }
 }
 
diff --git a/packages/experimental/forge-github/src/index.ts b/packages/experimental/forge-github/src/index.ts
index bdb3a8f2ea..a0bc66126a 100644
--- a/packages/experimental/forge-github/src/index.ts
+++ b/packages/experimental/forge-github/src/index.ts
@@ -18,7 +18,7 @@ export interface Config {
   hosts?: string[]
   /** Deadline in milliseconds for one `gh` invocation. */
   timeoutMs?: number
-  /** Maximum captured bytes per `gh` output stream. */
+  /** Maximum captured bytes per `gh` output stream and combined JSON bytes of one complete check read. */
   maxOutputBytes?: number
 }
 
@@ -44,5 +44,5 @@ export function apply(ctx: Context, config: Config): void {
   if (!Number.isSafeInteger(resolved.maxOutputBytes) || resolved.maxOutputBytes <= 0) {
     throw new Error('forge-github: maxOutputBytes must be a positive safe integer')
   }
-  ctx.forge.register(new GitHubProvider(ghRunner(resolved), resolved.hosts))
+  ctx.forge.register(new GitHubProvider(ghRunner(resolved), resolved.hosts, resolved.maxOutputBytes))
 }
diff --git a/packages/experimental/forge-github/src/provider.ts b/packages/experimental/forge-github/src/provider.ts
index 442efa49c5..ca56473956 100644
--- a/packages/experimental/forge-github/src/provider.ts
+++ b/packages/experimental/forge-github/src/provider.ts
@@ -3,12 +3,13 @@
 import { changeRequestKey } from '@deepseek-ai/dsh-experimental-forge'
 import type {
   ChangeRequestKey, ChangeRequestRef, ChangeRequestSnapshot, ForgeActionFailure, ForgeFailure, ForgeProvider, ForgeReadiness,
-  ForgeRepository, MergeRequest,
+  ForgeRepository, ForgeReviewRequest, ForgeReviewResult, MergeRequest,
 } from '@deepseek-ai/dsh-experimental-forge'
 import { GhOutputLimitError, GhTimeoutError, GhUnavailableError } from './gh.ts'
 import type { GhOutput, GhRunner } from './gh.ts'
-import { hasGraphqlFields, HEAD_QUERY, mapHeadResponse, mapSnapshotResponse, snapshotQuery } from './graphql.ts'
+import { CHECKS_QUERY, hasGraphqlFields, HEAD_QUERY, mapCheckPageResponse, mapHeadResponse, mapSnapshotResponse, snapshotQuery } from './graphql.ts'
 import { checkedRepository, parsePullRequestUrl, parseRemoteUrl } from './urls.ts'
+import { submitGitHubReview } from './review.ts'
 
 const AUTHENTICATION = /gh auth login|authentication|bad credentials|HTTP 401/i
 
@@ -29,11 +30,18 @@ export class GitHubProvider implements ForgeProvider {
   readonly forge = 'github'
   private readonly hosts: ReadonlySet<string>
 
+  async submitReview(ref: ChangeRequestRef, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult> {
+    const failure = this.hostFailure(ref.repository.host)
+    if (failure !== undefined) return { ok: false, code: 'failed', message: failure.message }
+    return await submitGitHubReview(this.gh, ref, request, signal)
+  }
+
   /**
    * @param gh - runner that executes `gh` on the host.
    * @param hosts - host names this provider serves, such as `github.com` and Enterprise hosts.
+   * @param maxOutputBytes - maximum combined JSON bytes retained by an explicit check read.
    */
-  constructor(private readonly gh: GhRunner, hosts: readonly string[]) {
+  constructor(private readonly gh: GhRunner, hosts: readonly string[], private readonly maxOutputBytes: number) {
     this.hosts = new Set(hosts.map(host => host.toLowerCase()))
   }
 
@@ -76,6 +84,22 @@ export class GitHubProvider implements ForgeProvider {
     return results
   }
 
+  async fetchChecks(ref: ChangeRequestRef, signal: AbortSignal): Promise<ChangeRequestSnapshot | ForgeFailure> {
+    const failure = this.hostFailure(ref.repository.host)
+    if (failure !== undefined) return failure
+    try {
+      const results = await this.fetchHost(ref.repository.host, [ref], signal, true)
+      // oxlint-disable-next-line typescript/no-non-null-assertion -- fetchHost returns one result for each requested ref.
+      return results.get(changeRequestKey(ref))!
+    } catch (error) {
+      if (signal.aborted) throw signal.reason
+      if (error instanceof GhUnavailableError || error instanceof GhTimeoutError || error instanceof GhOutputLimitError) {
+        return { code: error instanceof GhOutputLimitError ? 'too-large' : 'unavailable', message: error.message }
+      }
+      throw error
+    }
+  }
+
   async findByHead(repository: ForgeRepository, branch: string, signal: AbortSignal): Promise<readonly ChangeRequestRef[]> {
     const failure = this.hostFailure(repository.host)
     if (failure !== undefined) throw new Error(failure.message)
@@ -206,11 +230,33 @@ export class GitHubProvider implements ForgeProvider {
     host: string,
     refs: readonly ChangeRequestRef[],
     signal: AbortSignal,
+    completeChecks = false,
   ): Promise<ReadonlyMap<ChangeRequestKey, ChangeRequestSnapshot | ForgeFailure>> {
     const query = snapshotQuery(refs)
     const output = await this.gh(['api', 'graphql', '--hostname', host, '-f', `query=${query.document}`], signal)
     const body = parseJson(output.stdout)
-    if (hasGraphqlFields(body)) return mapSnapshotResponse(body, query)
+    if (!completeChecks && hasGraphqlFields(body)) return await mapSnapshotResponse(body, query)
+    let bytes = Buffer.byteLength(output.stdout)
+    const tooLarge: ForgeFailure = { code: 'too-large', message: 'GitHub check details exceed the output size limit' }
+    if (bytes > this.maxOutputBytes) return new Map([...query.targets.values()].map(ref => [changeRequestKey(ref), tooLarge]))
+    if (hasGraphqlFields(body)) return await mapSnapshotResponse(body, query, async (id, cursor) => {
+      signal.throwIfAborted()
+      let page: GhOutput
+      try {
+        page = await this.gh(['api', 'graphql', '--hostname', host,
+          '-f', `query=${CHECKS_QUERY}`, '-f', `id=${id}`, '-f', `cursor=${cursor}`], signal)
+      } catch (error) {
+        if (signal.aborted) throw signal.reason
+        if (error instanceof GhUnavailableError || error instanceof GhTimeoutError || error instanceof GhOutputLimitError) {
+          return { ok: false, failure: { code: error instanceof GhOutputLimitError ? 'too-large' : 'unavailable', message: error.message } }
+        }
+        throw error
+      }
+      bytes += Buffer.byteLength(page.stdout)
+      if (bytes > this.maxOutputBytes) return { ok: false, failure: tooLarge }
+      const value = parseJson(page.stdout)
+      return hasGraphqlFields(value) ? mapCheckPageResponse(value) : { ok: false, failure: responseFailure(page, value) }
+    })
     const failure = responseFailure(output, body)
     return new Map([...query.targets.values()].map(ref => [changeRequestKey(ref), failure] as const))
   }
diff --git a/packages/experimental/forge-github/src/review.ts b/packages/experimental/forge-github/src/review.ts
new file mode 100644
index 0000000000..09270faeea
--- /dev/null
+++ b/packages/experimental/forge-github/src/review.ts
@@ -0,0 +1,59 @@
+/** GitHub review writes with commit checks and explicit treatment of uncertain outcomes. */
+
+import { z } from 'zod'
+import type { ChangeRequestRef, ForgeLineComment, ForgeReviewRequest, ForgeReviewResult } from '@deepseek-ai/dsh-experimental-forge'
+import { GhUnavailableError, type GhOutput, type GhRunner } from './gh.ts'
+import { checkedRepository } from './urls.ts'
+
+const pull = z.object({ head: z.object({ sha: z.string() }), state: z.string() })
+const receipt = z.object({ html_url: z.url() })
+const EVENTS = { comment: 'COMMENT', approve: 'APPROVE', 'request-changes': 'REQUEST_CHANGES' } as const
+
+function inline(comment: ForgeLineComment): object {
+  const side = comment.side === 'L' ? 'LEFT' : 'RIGHT'
+  return { path: comment.path, side, line: comment.endLine, body: comment.body,
+    ...comment.startLine === comment.endLine ? {} : { start_line: comment.startLine, start_side: side } }
+}
+
+function failed(output: GhOutput, write: boolean): ForgeReviewResult {
+  const known = /\(HTTP (?:400|401|403|404|409|422)\)/.test(output.stderr)
+  return { ok: false, code: write && !known ? 'unknown' : 'failed', message: output.stderr.trim() || output.stdout.trim() || 'GitHub request failed' }
+}
+
+/**
+ * Send one review mutation using JSON on stdin, never shell or argument interpolation.
+ * @param gh - bounded, cancellable GitHub CLI runner.
+ * @param ref - validated pull request address.
+ * @param request - frozen commit and comment ranges.
+ * @param signal - cancellation of preflight and mutation.
+ * @returns a confirmed receipt, refusal, stale commit, or uncertain outcome; never retries a write.
+ */
+export async function submitGitHubReview(
+  gh: GhRunner, ref: ChangeRequestRef, request: ForgeReviewRequest, signal: AbortSignal,
+): Promise<ForgeReviewResult> {
+  const { host, owner, name } = checkedRepository(ref)
+  const endpoint = `repos/${owner}/${name}/pulls/${ref.number}`
+  let writing = false
+  try {
+    const read = await gh(['api', '--hostname', host, endpoint], signal)
+    if (read.exitCode !== 0) return failed(read, false)
+    const current = pull.parse(JSON.parse(read.stdout))
+    if (current.head.sha !== request.headSha) return { ok: false, code: 'stale', message: 'The pull request head has changed' }
+    if (current.state !== 'open') return { ok: false, code: 'failed', message: 'The pull request is not open' }
+    signal.throwIfAborted()
+    const body = request.kind === 'comment'
+      ? { commit_id: request.headSha, ...inline(request.comment) }
+      : { commit_id: request.headSha, event: EVENTS[request.event], body: request.body, comments: request.comments.map(inline) }
+    writing = true
+    const output = await gh(['api', '--hostname', host, '--method', 'POST', `${endpoint}/${request.kind === 'comment' ? 'comments' : 'reviews'}`, '--input', '-'], signal, JSON.stringify(body))
+    if (output.exitCode !== 0) return failed(output, true)
+    const result = receipt.parse(JSON.parse(output.stdout))
+    const url = new URL(result.html_url)
+    if (url.protocol !== 'https:' || url.host !== host) throw new Error('GitHub returned an invalid review URL')
+    return { ok: true, url: result.html_url }
+  } catch (error) {
+    if (!writing && signal.aborted) throw signal.reason
+    return { ok: false, code: writing && !(error instanceof GhUnavailableError) ? 'unknown' : 'failed',
+      message: error instanceof Error ? error.message : String(error) }
+  }
+}
diff --git a/packages/experimental/forge-github/tests/fixtures.ts b/packages/experimental/forge-github/tests/fixtures.ts
index c5183c4269..5eacc54a6b 100644
--- a/packages/experimental/forge-github/tests/fixtures.ts
+++ b/packages/experimental/forge-github/tests/fixtures.ts
@@ -11,20 +11,20 @@ export function pull(number: number, repository: ForgeRepository = demo): Change
 /** One CheckRun context node as GitHub returns it. */
 export function checkRun(name: string, status: string, conclusion: string | null, workflow: string | null = 'ci'): Record<string, unknown> {
   return {
-    __typename: 'CheckRun',
+    __typename: 'CheckRun', id: 'check-1', databaseId: 1,
     name,
     status,
     conclusion,
     detailsUrl: `https://github.com/octo/demo/actions/runs/1/job/${name}`,
     startedAt: status === 'QUEUED' ? null : '2026-10-09T01:00:00Z',
     completedAt: status === 'COMPLETED' ? '2026-10-09T01:02:07Z' : null,
-    checkSuite: workflow === null ? { workflowRun: null } : { workflowRun: { workflow: { name: workflow } } },
+    checkSuite: { app: { id: 'github-actions' }, workflowRun: workflow === null ? null : { event: 'pull_request', workflow: { id: workflow, name: workflow } } },
   }
 }
 
 /** One StatusContext node as GitHub returns it. */
 export function statusContext(context: string, state: string): Record<string, unknown> {
-  return { __typename: 'StatusContext', context, state, targetUrl: null }
+  return { __typename: 'StatusContext', context, state, targetUrl: null, createdAt: '2026-10-09T01:00:00Z' }
 }
 
 /** Merge settings of a repository that allows squash and merge commits and whose viewer may merge, usually with a merge commit. */
@@ -63,8 +63,8 @@ export function pullRequestNode(number: number, overrides: Record<string, unknow
       nodes: [{
         commit: {
           statusCheckRollup: rollupState === null ? null : {
-            state: rollupState,
-            contexts: { pageInfo: { hasNextPage: false }, nodes: contexts },
+            id: `rollup-${number}`, state: rollupState,
+            contexts: { pageInfo: { hasNextPage: false, endCursor: null }, nodes: contexts },
           },
         },
       }],
diff --git a/packages/experimental/forge-github/tests/gh.spec.ts b/packages/experimental/forge-github/tests/gh.spec.ts
index 0f5f785f09..84246e36ac 100644
--- a/packages/experimental/forge-github/tests/gh.spec.ts
+++ b/packages/experimental/forge-github/tests/gh.spec.ts
@@ -22,6 +22,7 @@ async function fakeGh(): Promise<string> {
     '#!/bin/sh',
     'case "$1" in',
     '  echo) printf "%s|" "$@"; printf "\\nprompt=%s token=%s pager=[%s]\\n" "$GH_PROMPT_DISABLED" "${GH_TOKEN:-unset}" "$GH_PAGER" ;;',
+    '  input) cat ;;',
     '  fail) echo oops >&2; exit 3 ;;',
     '  sleep) sleep 5 ;;',
     '  big) head -c 5000 /dev/zero | tr "\\0" x ;;',
@@ -33,6 +34,12 @@ async function fakeGh(): Promise<string> {
 }
 
 describe.skipIf(process.platform === 'win32')('gh runner', () => {
+  it('delivers review JSON through stdin without interpreting shell syntax', async () => {
+    const run = ghRunner({ ghCommand: await fakeGh(), timeoutMs: 5_000, maxOutputBytes: 10_000 })
+    const body = JSON.stringify({ body: 'Check `$(secret)`\n检查边界' })
+    await expect(run(['input'], new AbortController().signal, body)).resolves.toEqual({ exitCode: 0, stdout: body, stderr: '' })
+  })
+
   it('runs gh with literal arguments and a scrubbed, non-interactive environment', async () => {
     vi.stubEnv('GH_TOKEN', 'secret-token')
     const run = ghRunner({ ghCommand: await fakeGh(), timeoutMs: 5_000, maxOutputBytes: 10_000 })
diff --git a/packages/experimental/forge-github/tests/graphql.spec.ts b/packages/experimental/forge-github/tests/graphql.spec.ts
index c0ecc78ed7..80a96bae20 100644
--- a/packages/experimental/forge-github/tests/graphql.spec.ts
+++ b/packages/experimental/forge-github/tests/graphql.spec.ts
@@ -1,15 +1,18 @@
 import { changeRequestKey } from '@deepseek-ai/dsh-experimental-forge'
 import type { ChangeRequestSnapshot } from '@deepseek-ai/dsh-experimental-forge'
 import { describe, expect, it } from 'vitest'
-import { mapHeadResponse, mapSnapshotResponse, snapshotQuery } from '../src/graphql.ts'
+import { mapCheckPageResponse, mapHeadResponse, mapSnapshotResponse, snapshotQuery, type CheckPageResult } from '../src/graphql.ts'
 import { checkRun, demo, pull, pullRequestNode, repositorySettings, statusContext } from './fixtures.ts'
 
+const noMoreChecks = async (): Promise<CheckPageResult> => { throw new Error('Unexpected check page') }
+
 const other = { ...demo, name: 'other' }
 
 /** Map one pull request node of a repository with `settings`, or without readable merge settings when it is null. */
-function single(node: unknown, settings: Record<string, unknown> | null = repositorySettings()): ChangeRequestSnapshot {
+async function single(node: unknown, settings: Record<string, unknown> | null = repositorySettings()): Promise<ChangeRequestSnapshot> {
   const query = snapshotQuery([pull(1)])
-  const result = mapSnapshotResponse({ data: { r0: { ...settings, p0: node } } }, query).get(changeRequestKey(pull(1)))
+  const results = await mapSnapshotResponse({ data: { r0: { ...settings, p0: node } } }, query, noMoreChecks)
+  const result = results.get(changeRequestKey(pull(1)))
   if (result === undefined || 'code' in result) throw new Error(`expected a snapshot, received ${JSON.stringify(result)}`)
   return result
 }
@@ -34,8 +37,8 @@ describe('snapshot query', () => {
 })
 
 describe('snapshot mapping', () => {
-  it('maps the pull request fields into a provider-neutral snapshot', () => {
-    expect(single(pullRequestNode(1, {}, [checkRun('lint', 'COMPLETED', 'SUCCESS')]))).toEqual({
+  it('maps the pull request fields into a provider-neutral snapshot', async () => {
+    expect((await single(pullRequestNode(1, {}, [checkRun('lint', 'COMPLETED', 'SUCCESS')])))).toEqual({
       ref: pull(1),
       url: 'https://github.com/octo/demo/pull/1',
       title: 'Change 1',
@@ -67,29 +70,94 @@ describe('snapshot mapping', () => {
     })
   })
 
-  it('keeps the merge or close time of a finished pull request', () => {
-    expect(single(pullRequestNode(1, { state: 'MERGED', closedAt: '2026-10-09T02:00:00Z' })).closedAt).toBe('2026-10-09T02:00:00Z')
+  it('keeps the merge or close time of a finished pull request', async () => {
+    expect((await single(pullRequestNode(1, { state: 'MERGED', closedAt: '2026-10-09T02:00:00Z' }))).closedAt).toBe('2026-10-09T02:00:00Z')
   })
 
-  it('keeps the start time of a running check and no times for a queued one', () => {
-    const snapshot = single(pullRequestNode(1, {}, [checkRun('build', 'IN_PROGRESS', null), checkRun('test', 'QUEUED', null)]))
+  it('keeps the start time of a running check and no times for a queued one', async () => {
+    const snapshot = (await single(pullRequestNode(1, {}, [checkRun('build', 'IN_PROGRESS', null), checkRun('test', 'QUEUED', null)])))
     expect(snapshot.checks.map(check => [check.startedAt, check.completedAt])).toEqual([['2026-10-09T01:00:00Z', null], [null, null]])
   })
 
+  it('keeps the newest run even when it is queued, and separates workflows, events, apps, and status contexts', async () => {
+    const old = checkRun('build', 'COMPLETED', 'FAILURE')
+    const newer = { ...checkRun('build', 'QUEUED', null), databaseId: 9 }
+    const suite = (app: string, workflow: string, event: string) => ({ app: { id: app },
+      workflowRun: { event, workflow: { id: workflow, name: 'CI' } } })
+    const result = await single(pullRequestNode(1, {}, [
+      old, newer, { ...old, databaseId: 2 },
+      { ...old, checkSuite: suite('github-actions', 'ci', 'push') },
+      { ...old, checkSuite: suite('github-actions', 'other-workflow', 'pull_request') },
+      { ...old, checkSuite: suite('other-app', 'ci', 'pull_request') },
+      statusContext('build', 'FAILURE'),
+      { ...statusContext('build', 'SUCCESS'), createdAt: '2026-10-10T00:00:00Z' },
+    ]))
+    expect(result.checks.map(check => check.state)).toEqual(['pending', 'failure', 'failure', 'failure', 'success'])
+  })
+
+  it('uses the run id to choose the newer run when start times are equal', async () => {
+    const result = await single(pullRequestNode(1, {}, [
+      checkRun('test', 'COMPLETED', 'FAILURE'),
+      { ...checkRun('test', 'COMPLETED', 'SUCCESS'), databaseId: 2 },
+    ]))
+    expect(result.checks.map(check => check.state)).toEqual(['success'])
+  })
+
+  it.each([
+    ['QUEUED', null, 'pending'], ['COMPLETED', 'SUCCESS', 'success'], ['COMPLETED', 'CANCELLED', 'failure'],
+    ['COMPLETED', 'ACTION_REQUIRED', 'failure'],
+  ] as const)('summarizes the latest %s/%s run instead of a superseded failure', async (status, conclusion, expected) => {
+    const result = await single(pullRequestNode(1, {}, [
+      checkRun('build', 'COMPLETED', 'FAILURE'), { ...checkRun('build', status, conclusion), databaseId: 2 },
+    ], 'FAILURE'))
+    expect(result.checks).toHaveLength(1)
+    expect(result.checksRollup).toBe(expected)
+  })
+
+  it.each(['STALE', null, 'FUTURE_CONCLUSION'])('does not report completed %s as passing', async (conclusion) => {
+    const result = await single(pullRequestNode(1, {}, [checkRun('build', 'COMPLETED', conclusion)], 'SUCCESS'))
+    expect(result.checksRollup).toBe('pending')
+  })
+
+  it('retains unranked runs by node id without guessing their age from missing times', async () => {
+    const queued = { ...checkRun('build', 'QUEUED', null), id: 'queued', databaseId: null }
+    const failed = { ...checkRun('build', 'COMPLETED', 'FAILURE'), id: 'failed', databaseId: null }
+    const passed = { ...checkRun('build', 'COMPLETED', 'SUCCESS'), databaseId: 9 }
+    const result = await single(pullRequestNode(1, {}, [queued, failed, queued, passed]))
+    expect(result.checks.map(check => check.state)).toEqual(['pending', 'failure', 'success'])
+    expect(result.checksRollup).toBe('failure')
+    expect(result.checksTruncated).toBe(false)
+    expect((await single(pullRequestNode(1, {}, [queued, passed]))).checksRollup).toBe('pending')
+    expect((await single(pullRequestNode(1, {}, [failed]))).checksRollup).toBe('failure')
+  })
+
+  it.each([-1, '1'])('reports malformed known check id %s instead of publishing a smaller count', async (databaseId) => {
+    await expect(single(pullRequestNode(1, {}, [{ ...checkRun('build', 'COMPLETED', 'SUCCESS'), databaseId }])))
+      .rejects.toThrow('unexpected GitHub check fields')
+  })
+
+  it.each(['FAILURE', 'PENDING'] as const)('preserves the raw %s rollup when an unknown context cannot be summarized', async (state) => {
+    const result = await single(pullRequestNode(1, {}, [
+      checkRun('build', 'COMPLETED', 'SUCCESS'), { __typename: 'FutureContext' },
+    ], state))
+    expect(result.checksRollup).toBe(state === 'FAILURE' ? 'failure' : 'pending')
+    expect(result.checksTruncated).toBe(false)
+  })
+
   it.each([
     ['OPEN', 'open'],
     ['CLOSED', 'closed'],
     ['MERGED', 'merged'],
-  ])('maps state %s to %s', (state, expected) => {
-    expect(single(pullRequestNode(1, { state })).state).toBe(expected)
+  ])('maps state %s to %s', async (state, expected) => {
+    expect((await single(pullRequestNode(1, { state }))).state).toBe(expected)
   })
 
   it.each([
     ['MERGEABLE', 'mergeable'],
     ['CONFLICTING', 'conflicting'],
     ['UNKNOWN', 'unknown'],
-  ])('maps mergeable %s to %s', (mergeable, expected) => {
-    expect(single(pullRequestNode(1, { mergeable })).mergeability).toBe(expected)
+  ])('maps mergeable %s to %s', async (mergeable, expected) => {
+    expect((await single(pullRequestNode(1, { mergeable }))).mergeability).toBe(expected)
   })
 
   it.each([
@@ -97,8 +165,8 @@ describe('snapshot mapping', () => {
     ['CHANGES_REQUESTED', 'changes-requested'],
     ['REVIEW_REQUIRED', 'review-required'],
     [null, 'none'],
-  ])('maps review decision %s to %s', (reviewDecision, expected) => {
-    expect(single(pullRequestNode(1, { reviewDecision })).reviewDecision).toBe(expected)
+  ])('maps review decision %s to %s', async (reviewDecision, expected) => {
+    expect((await single(pullRequestNode(1, { reviewDecision }))).reviewDecision).toBe(expected)
   })
 
   it.each([
@@ -110,12 +178,13 @@ describe('snapshot mapping', () => {
     ['COMPLETED', 'CANCELLED', 'cancelled'],
     ['COMPLETED', 'SKIPPED', 'skipped'],
     ['COMPLETED', 'NEUTRAL', 'neutral'],
-    ['COMPLETED', 'STALE', 'neutral'],
-    ['COMPLETED', null, 'neutral'],
+    ['COMPLETED', 'STALE', 'pending'],
+    ['COMPLETED', null, 'pending'],
+    ['COMPLETED', 'FUTURE_CONCLUSION', 'pending'],
     ['IN_PROGRESS', null, 'pending'],
     ['QUEUED', null, 'pending'],
-  ])('maps check run %s/%s to %s', (status, conclusion, expected) => {
-    expect(single(pullRequestNode(1, {}, [checkRun('build', status, conclusion)])).checks[0]?.state).toBe(expected)
+  ])('maps check run %s/%s to %s', async (status, conclusion, expected) => {
+    expect((await single(pullRequestNode(1, {}, [checkRun('build', status, conclusion)]))).checks[0]?.state).toBe(expected)
   })
 
   it.each([
@@ -124,8 +193,8 @@ describe('snapshot mapping', () => {
     ['ERROR', 'failure'],
     ['PENDING', 'pending'],
     ['EXPECTED', 'pending'],
-  ])('maps status context %s to %s', (state, expected) => {
-    expect(single(pullRequestNode(1, {}, [statusContext('deploy', state)])).checks).toEqual([{
+  ])('maps status context %s to %s', async (state, expected) => {
+    expect((await single(pullRequestNode(1, {}, [statusContext('deploy', state)]))).checks).toEqual([{
       name: 'deploy', state: expected, url: null, workflow: null, startedAt: null, completedAt: null,
     }])
   })
@@ -137,16 +206,16 @@ describe('snapshot mapping', () => {
     ['PENDING', 'pending'],
     ['EXPECTED', 'pending'],
     [null, 'none'],
-  ])('maps rollup %s to %s', (state, expected) => {
-    expect(single(pullRequestNode(1, {}, [], state)).checksRollup).toBe(expected)
+  ])('maps rollup %s to %s', async (state, expected) => {
+    expect((await single(pullRequestNode(1, {}, [], state))).checksRollup).toBe(expected)
   })
 
-  it('reads workflows only when GitHub reports one and skips unknown contexts', () => {
-    const snapshot = single(pullRequestNode(1, {}, [
+  it('reads workflows only when GitHub reports one and skips unknown contexts', async () => {
+    const snapshot = (await single(pullRequestNode(1, {}, [
       checkRun('a', 'COMPLETED', 'SUCCESS', null),
       { ...checkRun('b', 'COMPLETED', 'SUCCESS'), checkSuite: null },
       { __typename: 'FutureContext', name: 'c' },
-    ]))
+    ])))
 
     expect(snapshot.checks.map(check => [check.name, check.workflow])).toEqual([['a', null], ['b', null]])
   })
@@ -167,8 +236,8 @@ describe('snapshot mapping', () => {
     ['for a triager', {}, { viewerPermission: 'TRIAGE' }, false],
     ['for a reader', {}, { viewerPermission: 'READ' }, false],
     ['for a viewer without a permission', {}, { viewerPermission: null }, false],
-  ])('offers a merge of a pull request %s only when GitHub would merge it now', (_label, node, settings, ready) => {
-    expect(single(pullRequestNode(1, node), repositorySettings(settings)).mergeReady).toBe(ready)
+  ])('offers a merge of a pull request %s only when GitHub would merge it now', async (_label, node, settings, ready) => {
+    expect((await single(pullRequestNode(1, node), repositorySettings(settings))).mergeReady).toBe(ready)
   })
 
   it.each([
@@ -176,27 +245,21 @@ describe('snapshot mapping', () => {
     ['keeps the menu order when the usual method is squash', { rebaseMergeAllowed: true, viewerDefaultMergeMethod: 'SQUASH' }, ['squash', 'merge', 'rebase']],
     ['skips a usual method the repository disallows', { mergeCommitAllowed: false, rebaseMergeAllowed: true }, ['squash', 'rebase']],
     ['lists nothing when the repository allows no method', { squashMergeAllowed: false, mergeCommitAllowed: false }, []],
-  ])('lists the merge methods the repository allows: %s', (_label, settings, methods) => {
-    expect(single(pullRequestNode(1), repositorySettings(settings)).mergeMethods).toEqual(methods)
+  ])('lists the merge methods the repository allows: %s', async (_label, settings, methods) => {
+    expect((await single(pullRequestNode(1), repositorySettings(settings))).mergeMethods).toEqual(methods)
   })
 
-  it('offers no merge in a repository whose merge settings are unreadable', () => {
-    expect(single(pullRequestNode(1), null)).toMatchObject({ mergeReady: false, mergeMethods: [] })
-    expect(single(pullRequestNode(1), { squashMergeAllowed: 'yes' })).toMatchObject({ mergeReady: false, mergeMethods: [] })
+  it('offers no merge in a repository whose merge settings are unreadable', async () => {
+    expect((await single(pullRequestNode(1), null))).toMatchObject({ mergeReady: false, mergeMethods: [] })
+    expect((await single(pullRequestNode(1), { squashMergeAllowed: 'yes' }))).toMatchObject({ mergeReady: false, mergeMethods: [] })
   })
 
-  it('marks truncated checks, a hidden author, drafts, and a commit without rollup', () => {
-    const truncated = pullRequestNode(1, {
-      isDraft: true,
-      author: null,
-      commits: { nodes: [{ commit: { statusCheckRollup: { state: 'PENDING', contexts: { pageInfo: { hasNextPage: true }, nodes: [] } } } }] },
-    })
-
-    expect(single(truncated)).toMatchObject({ draft: true, author: null, checksTruncated: true })
-    expect(single(pullRequestNode(1, { commits: { nodes: [] } }))).toMatchObject({ checks: [], checksRollup: 'none', checksTruncated: false })
+  it('keeps a hidden author, drafts, and a commit without rollup', async () => {
+    expect(await single(pullRequestNode(1, { isDraft: true, author: null }))).toMatchObject({ draft: true, author: null })
+    expect(await single(pullRequestNode(1, { commits: { nodes: [] } }))).toMatchObject({ checks: [], checksRollup: 'none', checksTruncated: false })
   })
 
-  it('maps path-scoped and global errors from the partial-error response', () => {
+  it('maps path-scoped and global errors from the partial-error response', async () => {
     const query = snapshotQuery([pull(1), pull(2), pull(7, other)])
     const body = {
       data: { r0: { p0: pullRequestNode(1), p1: null }, r1: null },
@@ -206,16 +269,16 @@ describe('snapshot mapping', () => {
       ],
     }
 
-    const results = mapSnapshotResponse(body, query)
+    const results = await mapSnapshotResponse(body, query, noMoreChecks)
 
     expect(results.get(changeRequestKey(pull(1)))).toMatchObject({ state: 'open' })
     expect(results.get(changeRequestKey(pull(2)))).toEqual({ code: 'not-found', message: 'Could not resolve to a PullRequest with the number of 2.' })
     expect(results.get(changeRequestKey(pull(7, other)))).toEqual({ code: 'unavailable', message: 'Resource not accessible by integration' })
   })
 
-  it('applies an error without a path to every unresolved change request', () => {
+  it('applies an error without a path to every unresolved change request', async () => {
     const query = snapshotQuery([pull(1), pull(2)])
-    const results = mapSnapshotResponse({ data: null, errors: [{ message: 'API rate limit exceeded' }] }, query)
+    const results = (await mapSnapshotResponse({ data: null, errors: [{ message: 'API rate limit exceeded' }] }, query, noMoreChecks))
 
     expect([...results.values()]).toEqual([
       { code: 'unavailable', message: 'API rate limit exceeded' },
@@ -223,24 +286,46 @@ describe('snapshot mapping', () => {
     ])
   })
 
-  it('reports missing nodes, malformed nodes, and malformed bodies', () => {
+  it('reports a query validation error whose path names a fragment instead of a response alias', async () => {
+    const query = snapshotQuery([pull(1)])
+    const results = await mapSnapshotResponse({ errors: [{ path: ['fragment ChangeRequestFields', 'invalidField'],
+      message: 'Field invalidField does not exist' }] }, query, noMoreChecks)
+    expect([...results.values()]).toEqual([{ code: 'unavailable', message: 'Field invalidField does not exist' }])
+  })
+
+  it('reports missing nodes, malformed nodes, and malformed bodies', async () => {
     const query = snapshotQuery([pull(1), pull(2)])
 
-    expect([...mapSnapshotResponse({ data: { r0: { p0: null, p1: { title: 7 } } } }, query).values()]).toEqual([
+    expect([...(await mapSnapshotResponse({ data: { r0: { p0: null, p1: { title: 7 } } } }, query, noMoreChecks)).values()]).toEqual([
       { code: 'not-found', message: 'pull request not found' },
       { code: 'unavailable', message: 'unexpected pull request fields' },
     ])
-    expect([...mapSnapshotResponse({}, query).values()]).toEqual([
+    expect([...(await mapSnapshotResponse({}, query, noMoreChecks)).values()]).toEqual([
       { code: 'unavailable', message: 'unexpected GitHub response' },
       { code: 'unavailable', message: 'unexpected GitHub response' },
     ])
-    expect([...mapSnapshotResponse('not json', query).values()]).toEqual([
+    expect([...(await mapSnapshotResponse('not json', query, noMoreChecks)).values()]).toEqual([
       { code: 'unavailable', message: 'unexpected GitHub response' },
       { code: 'unavailable', message: 'unexpected GitHub response' },
     ])
   })
 })
 
+describe('check page mapping', () => {
+  it('validates the next page', () => {
+    const page = { pageInfo: { hasNextPage: false, endCursor: null }, nodes: [statusContext('ci', 'SUCCESS')] }
+    expect(mapCheckPageResponse({ data: { node: { contexts: page } } })).toEqual({ ok: true, page })
+  })
+
+  it.each([
+    [{ data: { node: null } }, 'GitHub check page is unavailable'],
+    [{ errors: [{ message: 'Rate limited' }] }, 'Rate limited'],
+    [{ data: { node: { contexts: {} } } }, 'unexpected GitHub check page'],
+  ])('rejects unavailable or malformed pages', (body, message) => {
+    expect(mapCheckPageResponse(body)).toEqual({ ok: false, failure: { code: 'unavailable', message } })
+  })
+})
+
 describe('head branch lookup mapping', () => {
   const body = (defaultBranch: string | null, nodes: { number: number; isCrossRepository: boolean }[]) => ({
     data: { repository: { defaultBranchRef: defaultBranch === null ? null : { name: defaultBranch }, pullRequests: { nodes } } },
diff --git a/packages/experimental/forge-github/tests/provider.spec.ts b/packages/experimental/forge-github/tests/provider.spec.ts
index c9e7d146c4..ce513e0ab8 100644
--- a/packages/experimental/forge-github/tests/provider.spec.ts
+++ b/packages/experimental/forge-github/tests/provider.spec.ts
@@ -3,7 +3,7 @@ import { describe, expect, it } from 'vitest'
 import { GhOutputLimitError, GhTimeoutError, GhUnavailableError } from '../src/gh.ts'
 import type { GhOutput, GhRunner } from '../src/gh.ts'
 import { GitHubProvider } from '../src/provider.ts'
-import { demo, pull, pullRequestNode } from './fixtures.ts'
+import { checkRun, demo, pull, pullRequestNode } from './fixtures.ts'
 
 const enterprise = { forge: 'github', host: 'ghe.corp.example', owner: 'team', name: 'svc' }
 const signal = new AbortController().signal
@@ -24,7 +24,7 @@ function output(stdout: unknown, exitCode = 0, stderr = ''): GhOutput {
 }
 
 function provider(run: GhRunner): GitHubProvider {
-  return new GitHubProvider(run, ['github.com', 'GHE.corp.example'])
+  return new GitHubProvider(run, ['github.com', 'GHE.corp.example'], 8_388_608)
 }
 
 describe('GitHub provider addressing', () => {
@@ -46,7 +46,7 @@ describe('GitHub provider addressing', () => {
 
   it('uses a configured HTTP port for URL mapping and GitHub queries', async () => {
     const gh = fakeGh(() => output({ data: { r0: { p0: pullRequestNode(1) } } }))
-    const subject = new GitHubProvider(gh.run, ['ghe.example.com:8443'])
+    const subject = new GitHubProvider(gh.run, ['ghe.example.com:8443'], 8_388_608)
     const repository = subject.repositoryFromRemote('https://ghe.example.com:8443/team/repo.git')!
     const ref = { repository, number: 1 }
     expect(subject.changeRequestFromUrl(subject.changeRequestUrl(ref))).toEqual(ref)
@@ -56,6 +56,116 @@ describe('GitHub provider addressing', () => {
 })
 
 describe('GitHub provider fetch', () => {
+  const firstPage = () => pullRequestNode(1, { commits: { nodes: [{ commit: { statusCheckRollup: {
+    id: 'fixed-rollup', state: 'SUCCESS', contexts: { pageInfo: { hasNextPage: true, endCursor: 'page-1' },
+      nodes: Array.from({ length: 100 }, (_, index) => ({ ...checkRun('lint', 'COMPLETED', 'FAILURE'), databaseId: index + 1 })) },
+  } } }] } })
+
+  it('publishes the first page and other PRs without requesting check continuations', async () => {
+    const gh = fakeGh(() => output({ data: { r0: { p0: firstPage(), p1: pullRequestNode(2) } } }))
+    const results = await provider(gh.run).fetch([pull(1), pull(2)], signal)
+    expect(results.get(changeRequestKey(pull(1)))).toMatchObject({ checksTruncated: true, checksRollup: 'success', checks: [{ state: 'failure' }] })
+    expect(results.get(changeRequestKey(pull(2)))).toMatchObject({ title: 'Change 2', checksTruncated: false })
+    expect(gh.calls).toHaveLength(1)
+  })
+
+  it.each([
+    [new GhTimeoutError('timed out'), 'unavailable'],
+    [new GhOutputLimitError('too much output'), 'too-large'],
+    [new GhUnavailableError('gh missing'), 'unavailable'],
+  ] as const)('reports an initial check-detail process failure', async (error, code) => {
+    await expect(provider(fakeGh(() => { throw error }).run).fetchChecks(pull(1), signal))
+      .resolves.toEqual({ code, message: error.message })
+  })
+
+  it('refuses unconfigured hosts before starting a detail read', async () => {
+    const gh = fakeGh(() => output(''))
+    await expect(provider(gh.run).fetchChecks(pull(1, { ...demo, host: 'unconfigured.example' }), signal))
+      .resolves.toMatchObject({ code: 'unavailable' })
+    expect(gh.calls).toEqual([])
+  })
+
+  it('bounds the complete detail read by combined UTF-8 JSON bytes', async () => {
+    const first = output({ data: { r0: { p0: firstPage() } } })
+    const last = output({ data: { node: { contexts: { pageInfo: { hasNextPage: false, endCursor: null },
+      nodes: [checkRun('检查', 'COMPLETED', 'SUCCESS')] } } } })
+    const total = Buffer.byteLength(first.stdout) + Buffer.byteLength(last.stdout)
+    for (const limit of [total, total - 1, Buffer.byteLength(first.stdout) - 1]) {
+      const gh = fakeGh(args => args.includes('id=fixed-rollup') ? last : first)
+      const result = await new GitHubProvider(gh.run, ['github.com'], limit).fetchChecks(pull(1), signal)
+      if (limit === total) expect(result).toMatchObject({ checksTruncated: false })
+      else expect(result).toMatchObject({ code: 'too-large' })
+      expect(gh.calls).toHaveLength(limit < Buffer.byteLength(first.stdout) ? 1 : 2)
+    }
+  })
+
+  it('reads past 100 historical runs from the pinned rollup and counts only the latest run', async () => {
+    const gh = fakeGh(args => output(args.includes('id=fixed-rollup')
+      ? { data: { node: { contexts: { pageInfo: { hasNextPage: false, endCursor: null }, nodes: [
+        { ...checkRun('lint', 'COMPLETED', 'SUCCESS'), databaseId: 101 }, checkRun('test', 'COMPLETED', 'SUCCESS'),
+      ] } } } }
+      : { data: { r0: { p0: firstPage() } } }))
+    const result = await provider(gh.run).fetchChecks(pull(1), signal)
+    expect(result).toMatchObject({ checks: [{ name: 'lint', state: 'success' }, { name: 'test', state: 'success' }], checksTruncated: false })
+    expect(gh.calls).toHaveLength(2)
+    expect(gh.calls[1]).toContain('cursor=page-1')
+    expect(gh.calls[1]?.[5]).toContain('node(id: $id)')
+  })
+
+  it.each([
+    [output({ message: 'API rate limit exceeded' }, 1), 'API rate limit exceeded'],
+    [output({ errors: [{ message: 'Check page failed' }] }, 1), 'Check page failed'],
+    [output({ data: { node: { contexts: { pageInfo: { hasNextPage: true, endCursor: 'page-1' }, nodes: [] } } } }), 'GitHub check pagination did not advance'],
+    [output({ data: { node: { contexts: { pageInfo: { hasNextPage: true, endCursor: null }, nodes: [] } } } }), 'GitHub check pagination did not advance'],
+  ])('rejects an incomplete check read without losing another pull request', async (page, message) => {
+    const gh = fakeGh(args => args.includes('id=fixed-rollup') ? page : output({ data: { r0: { p0: firstPage(), p1: pullRequestNode(2) } } }))
+    const subject = provider(gh.run)
+    const results = await subject.fetch([pull(1), pull(2)], signal)
+    const details = await subject.fetchChecks(pull(1), signal)
+    expect(details).toEqual({ code: 'unavailable', message })
+    expect(results.get(changeRequestKey(pull(2)))).toMatchObject({ title: 'Change 2' })
+    expect(gh.calls).toHaveLength(3)
+  })
+
+  it('stops before requesting another check page when cancelled', async () => {
+    const controller = new AbortController()
+    const gh = fakeGh(() => { controller.abort(new Error('cancelled')); return output({ data: { r0: { p0: firstPage() } } }) })
+    await expect(provider(gh.run).fetchChecks(pull(1), controller.signal)).rejects.toThrow('cancelled')
+    expect(gh.calls).toHaveLength(1)
+  })
+
+  it.each([
+    [new GhTimeoutError('timed out'), 'unavailable'],
+    [new GhOutputLimitError('too much output'), 'too-large'],
+    [new GhUnavailableError('gh missing'), 'unavailable'],
+  ] as const)(
+    'contains a failed continuation process to its pull request', async (error, code) => {
+      const gh = fakeGh((args) => {
+        if (args.includes('id=fixed-rollup')) throw error
+        return output({ data: { r0: { p0: firstPage(), p1: pullRequestNode(2) } } })
+      })
+      const subject = provider(gh.run)
+      const results = await subject.fetch([pull(1), pull(2)], signal)
+      const details = await subject.fetchChecks(pull(1), signal)
+      expect(details).toEqual({ code, message: error.message })
+      expect(results.get(changeRequestKey(pull(2)))).toMatchObject({ title: 'Change 2' })
+    },
+  )
+
+  it('propagates cancellation and unexpected defects during a continuation', async () => {
+    for (const cancel of [true, false]) {
+      const controller = new AbortController()
+      const gh = fakeGh((args) => {
+        if (args.includes('id=fixed-rollup')) {
+          if (cancel) controller.abort(new Error('cancelled'))
+          throw new Error('unexpected')
+        }
+        return output({ data: { r0: { p0: firstPage() } } })
+      })
+      await expect(provider(gh.run).fetchChecks(pull(1), controller.signal)).rejects.toThrow(cancel ? 'cancelled' : 'unexpected')
+    }
+  })
+
   it.each([
     [{ message: 'Bad credentials' }, 1, 'gh: Bad credentials (HTTP 401)', 'unauthenticated', 'gh: Bad credentials (HTTP 401)'],
     [{ message: 'API rate limit exceeded' }, 1, 'gh: API rate limit exceeded (HTTP 403)', 'unavailable', 'gh: API rate limit exceeded (HTTP 403)'],
@@ -82,7 +192,7 @@ describe('GitHub provider fetch', () => {
   it('rejects references retained after their host was removed from configuration', async () => {
     const gh = fakeGh(() => output(''))
     const retained = provider(gh.run).changeRequestFromUrl('https://ghe.corp.example/team/svc/pull/2')!
-    const replacement = new GitHubProvider(gh.run, ['github.com'])
+    const replacement = new GitHubProvider(gh.run, ['github.com'], 8_388_608)
     const results = await replacement.fetch([retained], signal)
     await expect(replacement.findByHead(retained.repository, 'topic', signal)).rejects.toThrow('is not configured')
     expect(results.get(changeRequestKey(retained))).toMatchObject({ code: 'unavailable' })
diff --git a/packages/experimental/forge-github/tests/review.spec.ts b/packages/experimental/forge-github/tests/review.spec.ts
new file mode 100644
index 0000000000..e128508994
--- /dev/null
+++ b/packages/experimental/forge-github/tests/review.spec.ts
@@ -0,0 +1,97 @@
+/** GitHub review mutations preserve explicit sides and commits and never retry ambiguous writes. */
+import { describe, expect, it, vi } from 'vitest'
+import type { ForgeReviewRequest } from '@deepseek-ai/dsh-experimental-forge'
+import { GitHubProvider } from '../src/provider.ts'
+import { GhTimeoutError, GhUnavailableError, type GhRunner } from '../src/gh.ts'
+
+const ref = { repository: { forge: 'github', host: 'github.com', owner: 'octo', name: 'demo' }, number: 7 }
+const head = 'a'.repeat(40)
+const comment = { path: 'src/space name.ts', side: 'L' as const, startLine: 3, endLine: 5, body: 'Check `$(secret)`\n第二行' }
+const single: ForgeReviewRequest = { kind: 'comment', headSha: head, comment }
+const success = { exitCode: 0, stdout: JSON.stringify({ html_url: 'https://github.com/octo/demo/pull/7#discussion_r1' }), stderr: '' }
+function fixture() {
+  const gh = vi.fn<GhRunner>().mockResolvedValueOnce({ exitCode: 0, stdout: JSON.stringify({ head: { sha: head }, state: 'open' }), stderr: '' }).mockResolvedValue(success)
+  return { gh, provider: new GitHubProvider(gh, ['github.com'], 8_388_608), signal: new AbortController().signal }
+}
+
+describe('review submission', () => {
+  it('posts one multiline left-side comment as JSON stdin at the reviewed commit', async () => {
+    const { gh, provider, signal } = fixture()
+    expect(await provider.submitReview(ref, single, signal)).toMatchObject({ ok: true })
+    expect(gh.mock.calls[1]).toEqual([
+      ['api', '--hostname', 'github.com', '--method', 'POST', 'repos/octo/demo/pulls/7/comments', '--input', '-'], signal,
+      JSON.stringify({ commit_id: head, path: comment.path, side: 'LEFT', line: 5, body: comment.body, start_line: 3, start_side: 'LEFT' }),
+    ])
+  })
+  it.each(['comment', 'approve', 'request-changes'] as const)('sends one %s review containing all pending comments', async (event) => {
+    const { gh, provider, signal } = fixture()
+    await provider.submitReview(ref, { kind: 'review', headSha: head, event, body: 'Summary', comments: [comment, { ...comment, side: 'R', startLine: 5 }] }, signal)
+    expect(gh).toHaveBeenCalledTimes(2)
+    expect(JSON.parse(gh.mock.calls[1]?.[2] ?? '')).toEqual({ commit_id: head, event: { comment: 'COMMENT', approve: 'APPROVE', 'request-changes': 'REQUEST_CHANGES' }[event], body: 'Summary', comments: [
+      { path: comment.path, side: 'LEFT', line: 5, body: comment.body, start_line: 3, start_side: 'LEFT' },
+      { path: comment.path, side: 'RIGHT', line: 5, body: comment.body },
+    ] })
+  })
+  it('refuses changed heads before dispatching a write', async () => {
+    const { gh, provider, signal } = fixture()
+    expect(await provider.submitReview(ref, { ...single, headSha: 'b'.repeat(40) }, signal)).toMatchObject({ ok: false, code: 'stale' })
+    expect(gh).toHaveBeenCalledTimes(1)
+  })
+  it.each([
+    ['gh: Validation failed (HTTP 422)', 'failed'], ['gh: Bad credentials (HTTP 401)', 'failed'], ['gh: Server error (HTTP 503)', 'unknown'],
+  ])('classifies %s without retrying', async (stderr, code) => {
+    const { gh, provider, signal } = fixture()
+    gh.mockResolvedValue({ exitCode: 1, stdout: '', stderr })
+    expect(await provider.submitReview(ref, single, signal)).toMatchObject({ ok: false, code })
+    expect(gh).toHaveBeenCalledTimes(2)
+  })
+  it.each([[new GhTimeoutError('timed out'), 'unknown'], [new GhUnavailableError('missing'), 'failed']])('retains uncertainty when the write cannot finish: %s', async (error, code) => {
+    const { gh, provider, signal } = fixture()
+    gh.mockRejectedValue(error)
+    expect(await provider.submitReview(ref, single, signal)).toMatchObject({ ok: false, code })
+    expect(gh).toHaveBeenCalledTimes(2)
+  })
+  it('rejects an unexpected receipt instead of claiming publication', async () => {
+    const { gh, provider, signal } = fixture()
+    gh.mockResolvedValue({ ...success, stdout: '{}' })
+    expect(await provider.submitReview(ref, single, signal)).toMatchObject({ ok: false, code: 'unknown' })
+  })
+  it.each([
+    ['closed', { head: { sha: head }, state: 'closed' }],
+    ['malformed', { head: null }],
+  ])('does not write after a %s preflight response', async (_label, value) => {
+    const { gh, provider, signal } = fixture()
+    gh.mockReset().mockResolvedValue({ exitCode: 0, stdout: JSON.stringify(value), stderr: '' })
+    expect(await provider.submitReview(ref, single, signal)).toMatchObject({ ok: false, code: 'failed' })
+    expect(gh).toHaveBeenCalledTimes(1)
+  })
+  it.each([
+    ['detail', '', 'detail'], ['', 'stdout detail', 'stdout detail'], ['', '', 'GitHub request failed'],
+  ])('reports preflight refusal without mutation (%s, %s)', async (stderr, stdout, message) => {
+    const { gh, provider, signal } = fixture()
+    gh.mockReset().mockResolvedValue({ exitCode: 1, stdout, stderr })
+    expect(await provider.submitReview(ref, single, signal)).toEqual({ ok: false, code: 'failed', message })
+    expect(gh).toHaveBeenCalledTimes(1)
+  })
+  it.each(['http://github.com/octo/demo/pull/7', 'https://elsewhere.test/review'])('does not trust a receipt at %s', async (html_url) => {
+    const { gh, provider, signal } = fixture()
+    gh.mockResolvedValue({ ...success, stdout: JSON.stringify({ html_url }) })
+    expect(await provider.submitReview(ref, single, signal)).toMatchObject({ ok: false, code: 'unknown' })
+    expect(gh).toHaveBeenCalledTimes(2)
+  })
+  it('propagates cancellation before dispatch and contains non-Error write failures', async () => {
+    const { gh, provider } = fixture()
+    const controller = new AbortController()
+    controller.abort(new Error('cancelled'))
+    await expect(provider.submitReview(ref, single, controller.signal)).rejects.toThrow('cancelled')
+    expect(gh).toHaveBeenCalledTimes(1)
+    gh.mockReset().mockResolvedValueOnce({ exitCode: 0, stdout: JSON.stringify({ head: { sha: head }, state: 'open' }), stderr: '' })
+      .mockRejectedValue('connection lost')
+    expect(await provider.submitReview(ref, single, new AbortController().signal)).toEqual({ ok: false, code: 'unknown', message: 'connection lost' })
+  })
+  it('rejects a host outside the provider configuration without invoking gh', async () => {
+    const { gh, signal } = fixture()
+    expect(await new GitHubProvider(gh, ['enterprise.test'], 8_388_608).submitReview(ref, single, signal)).toMatchObject({ ok: false, code: 'failed' })
+    expect(gh).not.toHaveBeenCalled()
+  })
+})
diff --git a/packages/experimental/forge-github/tsconfig.json b/packages/experimental/forge-github/tsconfig.json
index cd14864f4d..fea1cc6ec1 100644
--- a/packages/experimental/forge-github/tsconfig.json
+++ b/packages/experimental/forge-github/tsconfig.json
@@ -25,6 +25,9 @@
     },
     {
       "path": "../../util/timeout"
+    },
+    {
+      "path": "../../util/brand"
     }
   ]
 }
diff --git a/packages/experimental/forge-session/package.json b/packages/experimental/forge-session/package.json
index 0b2a86c41f..de56b08a05 100644
--- a/packages/experimental/forge-session/package.json
+++ b/packages/experimental/forge-session/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-forge-session",
   "description": "Binds change requests to the Session that created, pushed, or tracked them",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/forge-session/tests/loader-composition.spec.ts b/packages/experimental/forge-session/tests/loader-composition.spec.ts
index 0a2288f4f6..e8fa6af4c9 100644
--- a/packages/experimental/forge-session/tests/loader-composition.spec.ts
+++ b/packages/experimental/forge-session/tests/loader-composition.spec.ts
@@ -86,10 +86,10 @@ const node = (number) => ({
   reviewDecision: null,
   reviewThreads: { nodes: [] },
   commits: { nodes: [{ commit: { statusCheckRollup: {
-    state: number === 7 ? 'PENDING' : 'SUCCESS',
-    contexts: { pageInfo: { hasNextPage: false }, nodes: [{
-      __typename: 'CheckRun', name: 'test', status: number === 7 ? 'IN_PROGRESS' : 'COMPLETED', conclusion: number === 7 ? null : 'SUCCESS',
-      detailsUrl: null, startedAt: null, completedAt: null, checkSuite: { workflowRun: { workflow: { name: 'ci' } } },
+    id: 'rollup-' + number, state: number === 7 ? 'PENDING' : 'SUCCESS',
+    contexts: { pageInfo: { hasNextPage: false, endCursor: null }, nodes: [{
+      __typename: 'CheckRun', id: 'check-1', databaseId: 1, name: 'test', status: number === 7 ? 'IN_PROGRESS' : 'COMPLETED', conclusion: number === 7 ? null : 'SUCCESS',
+      detailsUrl: null, startedAt: null, completedAt: null, checkSuite: { app: { id: 'actions' }, workflowRun: { event: 'pull_request', workflow: { id: 'ci', name: 'ci' } } },
     }] },
   } } }] },
 })
diff --git a/packages/experimental/forge/README.i18n.yaml b/packages/experimental/forge/README.i18n.yaml
index 8b402890fb..a51d57819e 100644
--- a/packages/experimental/forge/README.i18n.yaml
+++ b/packages/experimental/forge/README.i18n.yaml
@@ -15,8 +15,8 @@
   en: d152484eb41ac6b4
   zh: 2f8a621b991260a1
 /deepseek-ai-dsh-experimental-forge/use-this-package:
-  en: 5f4f14ee9aad5072
-  zh: 6c8606796df24a3e
+  en: 9ca86ee541048ff2
+  zh: 7aef4feb76542dd6
 /deepseek-ai-dsh-experimental-forge/understand-the-implementation:
   en: e193cb547c47069b
   zh: faa517522402ea41
diff --git a/packages/experimental/forge/README.md b/packages/experimental/forge/README.md
index 7e014cd2c6..5d2bb55ec6 100644
--- a/packages/experimental/forge/README.md
+++ b/packages/experimental/forge/README.md
@@ -38,10 +38,14 @@ Mount the registry with at least one provider package, such as the GitHub provid
 
 `diff(ref, signal)` reads the change request's unified patch as the host computes it, with `a/` and `b/` path prefixes, and `fileText(ref, commit, path, signal)` reads one file of its repository at a commit. Both delegate to the provider of the reference's forge, throw when none is registered, and resolve to the text or to a `ForgeFailure`, which is `too-large` when the host or the provider refuses an answer over its size limit. `fileUrl(ref, commit, path)` returns the web page of that file at that commit.
 
-`ctx.forge.watch(ref, listener)` is also an effect. The first watcher of a change request polls it at once; `latest(ref)` returns the most recent result. Each forge has at most one fetch in flight, and that fetch includes every due change request of the forge. An open change request is polled every `activeIntervalMs` while checks are pending or mergeability is unknown, and every `idleIntervalMs` otherwise. Closed change requests use `idleIntervalMs` to detect reopening; merged requests stop automatic polling. `refresh(ref)` polls a watched change request at once, including after a terminal state; if a fetch is already in flight for its forge, another fetch starts immediately after it settles. A failed read repeats after `activeIntervalMs` doubled for each consecutive failure, up to `maxBackoffMs`, which must be at least `activeIntervalMs`. Unregistering a provider settles its watched change requests as `unavailable`. Polling stops when the last watcher leaves. The [configuration catalog](../../../docs/config-catalog.md#deepseek-aidsh-experimental-forge) lists the defaults.
+`fetchChecks(ref, signal)` reads one change request’s complete checks on demand. It has its own `fetchTimeoutMs` deadline and does not occupy the polling batch or publish to its watchers. Failure leaves previously polled snapshots intact. A provider without `fetchChecks` returns `unavailable`. Caller cancellation and provider or service disposal abort the read; disposal waits for it to settle.
+
+`ctx.forge.watch(ref, listener)` is also an effect. The first watcher of a change request polls it at once; `latest(ref)` returns the most recent result. Each forge has at most one polling fetch in flight, and that fetch includes every due change request of the forge. An open change request is polled every `activeIntervalMs` while checks are pending or mergeability is unknown, and every `idleIntervalMs` otherwise. Closed change requests use `idleIntervalMs` to detect reopening; merged requests stop automatic polling. `refresh(ref)` polls a watched change request at once, including after a terminal state; if a fetch is already in flight for its forge, another fetch starts immediately after it settles. A failed read repeats after `activeIntervalMs` doubled for each consecutive failure, up to `maxBackoffMs`, which must be at least `activeIntervalMs`. Unregistering a provider settles its watched change requests as `unavailable`. Polling stops when the last watcher leaves. The [configuration catalog](../../../docs/config-catalog.md#deepseek-aidsh-experimental-forge) lists the defaults.
 
 Reaching `fetchTimeoutMs` aborts the fetch signal with `FORGE_FETCH_TIMEOUT`. Providers must stop their work and settle when the signal aborts; rejected fetches become `unavailable` failures. A provider that ignores cancellation can stall polling and service disposal.
 
+Providers may implement `submitReview` to publish a line comment or a completed review at an explicit head commit. The registry returns unsupported when that capability is absent and refreshes watched status after a submission. Successful writes return their web URL; failures distinguish changed heads, refusals, and unknown outcomes. Callers must reconcile unknown outcomes before another submission. Pending drafts belong to the consumer, not the polling registry.
+
 -----
 
 <a id="understand-the-implementation"></a>
diff --git a/packages/experimental/forge/README.zh.md b/packages/experimental/forge/README.zh.md
index 4ed514294d..8961c8d31d 100644
--- a/packages/experimental/forge/README.zh.md
+++ b/packages/experimental/forge/README.zh.md
@@ -38,10 +38,14 @@ kind: "package-reference"
 
 `diff(ref, signal)` 读取托管平台计算出的变更请求统一补丁，路径带 `a/` 与 `b/` 前缀；`fileText(ref, commit, path, signal)` 读取其仓库中某个提交下的一个文件。两者都委托给引用所属 forge 的提供方，没有注册提供方时抛错，resolve 为文本或 `ForgeFailure`；托管平台或提供方因结果超过其大小上限而拒绝时，失败为 `too-large`。`fileUrl(ref, commit, path)` 返回该文件在该提交下的网页地址。
 
-`ctx.forge.watch(ref, listener)` 同样是 effect。变更请求的第一个监听方会立即触发轮询；`latest(ref)` 返回最近一次结果。每个 forge 同时最多只有一次读取在进行，这次读取包含该 forge 所有到期的变更请求。打开状态的变更请求在检查未完成或可合并性未知时每 `activeIntervalMs` 轮询一次，否则每 `idleIntervalMs` 轮询一次。已关闭的变更请求按 `idleIntervalMs` 轮询以检测重新打开；已合并的停止自动轮询。`refresh(ref)` 立即轮询一个被监听的变更请求，已结束的也包括在内；该 forge 已有读取在进行时，等待其结束后立即再读一次。读取失败后，重试间隔为 `activeIntervalMs` 按连续失败次数翻倍，最长 `maxBackoffMs`；该值必须大于或等于 `activeIntervalMs`。注销提供方会让其被监听的变更请求以 `unavailable` 结束。最后一个监听方离开后轮询停止。默认值见[配置目录](../../../docs/config-catalog.zh.md#deepseek-aidsh-experimental-forge)。
+`fetchChecks(ref, signal)` 按需读取单个变更请求的完整检查，使用独立的 `fetchTimeoutMs` 时限，不占用轮询批次，也不向其监听方发布结果。读取失败时保留已有轮询快照。提供方未实现 `fetchChecks` 时返回 `unavailable`。调用方取消、提供方或服务销毁都会中止读取；销毁会等待读取结束。
+
+`ctx.forge.watch(ref, listener)` 同样是 effect。变更请求的第一个监听方会立即触发轮询；`latest(ref)` 返回最近一次结果。每个 forge 同时最多只有一次轮询读取在进行，这次读取包含该 forge 所有到期的变更请求。打开状态的变更请求在检查未完成或可合并性未知时每 `activeIntervalMs` 轮询一次，否则每 `idleIntervalMs` 轮询一次。已关闭的变更请求按 `idleIntervalMs` 轮询以检测重新打开；已合并的停止自动轮询。`refresh(ref)` 立即轮询一个被监听的变更请求，已结束的也包括在内；该 forge 已有读取在进行时，等待其结束后立即再读一次。读取失败后，重试间隔为 `activeIntervalMs` 按连续失败次数翻倍，最长 `maxBackoffMs`；该值必须大于或等于 `activeIntervalMs`。注销提供方会让其被监听的变更请求以 `unavailable` 结束。最后一个监听方离开后轮询停止。默认值见[配置目录](../../../docs/config-catalog.zh.md#deepseek-aidsh-experimental-forge)。
 
 达到 `fetchTimeoutMs` 时，读取信号会以 `FORGE_FETCH_TIMEOUT` 中止。提供方必须在信号中止时停止工作并结束请求；被拒绝的读取会转为 `unavailable` 失败。忽略取消的提供方可能阻塞轮询和服务销毁。
 
+provider 可以实现 `submitReview`，在指定的 head 提交上发布行内评论或完整评审。未实现该能力时，注册表返回不支持；提交结束后会刷新受关注的状态。成功的写操作返回网页 URL；失败区分 head 变化、明确拒绝与结果不明。调用方必须先核对结果不明的操作，再次提交。待提交草稿由消费者管理，不由轮询注册表保存。
+
 -----
 
 <a id="understand-the-implementation"></a>
diff --git a/packages/experimental/forge/package.json b/packages/experimental/forge/package.json
index a87bfca820..dea3a5f05d 100644
--- a/packages/experimental/forge/package.json
+++ b/packages/experimental/forge/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-forge",
   "description": "Provider-neutral change request registry with shared status polling",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/forge/src/index.ts b/packages/experimental/forge/src/index.ts
index f5f429a4fa..d5204d988a 100644
--- a/packages/experimental/forge/src/index.ts
+++ b/packages/experimental/forge/src/index.ts
@@ -7,7 +7,7 @@ import { changeRequestKey } from './keys.ts'
 import { nextPollDelay } from './schedule.ts'
 import type {
   ChangeRequestKey, ChangeRequestListener, ChangeRequestRef, ChangeRequestSnapshot, ChangeRequestUpdate, Config,
-  ForgeActionFailure, ForgeFailure, ForgeProvider, ForgeReadiness, ForgeRepository, MergeRequest,
+  ForgeActionFailure, ForgeFailure, ForgeProvider, ForgeReadiness, ForgeRepository, ForgeReviewRequest, ForgeReviewResult, MergeRequest,
 } from './types.ts'
 
 export { changeRequestKey } from './keys.ts'
@@ -221,6 +221,20 @@ export class ForgeService extends Service {
     return failure
   }
 
+  /**
+   * Read complete check details independently of periodic polling.
+   * @param ref - change request served by a registered provider.
+   * @param signal - cancellation of the detail view.
+   * @returns a complete snapshot or the provider's failure; unsupported providers return unavailable.
+   * @throws on cancellation, provider disposal, or expiry of this read's own `fetchTimeoutMs` deadline.
+   */
+  async fetchChecks(ref: ChangeRequestRef, signal: AbortSignal): Promise<ChangeRequestSnapshot | ForgeFailure> {
+    using timeout = deadline(signal, this.config.fetchTimeoutMs, 'FORGE_FETCH_TIMEOUT')
+    return await this.invoke(this.registration(ref.repository.forge), timeout.signal,
+      (provider, operation) => provider.fetchChecks?.(ref, operation)
+        ?? Promise.resolve({ code: 'unavailable', message: 'This provider does not support complete check reads' } as const))
+  }
+
   /**
    * Read the changes of a change request as its host computes them.
    * @param ref - change request served by a registered provider.
@@ -233,6 +247,21 @@ export class ForgeService extends Service {
       (provider, operation) => provider.diff(ref, operation))
   }
 
+  /**
+   * Publish one comment or a completed review, then refresh the watched status.
+   * @param ref - change request served by a registered provider.
+   * @param request - explicitly selected commit, comments, and review decision.
+   * @param signal - request cancellation.
+   * @returns a publication URL or a failure, including an unknown write outcome.
+   */
+  async submitReview(ref: ChangeRequestRef, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult> {
+    const result = await this.invoke(this.registration(ref.repository.forge), signal,
+      (provider, operation) => provider.submitReview?.(ref, request, operation)
+        ?? Promise.resolve({ ok: false, code: 'unsupported', message: 'This provider does not support review submission' } as const))
+    this.refresh(ref)
+    return result
+  }
+
   /**
    * Read the text of one file at a commit of a change request's repository.
    * @param ref - change request served by a registered provider.
diff --git a/packages/experimental/forge/src/types.ts b/packages/experimental/forge/src/types.ts
index c242578e71..35a977dcfe 100644
--- a/packages/experimental/forge/src/types.ts
+++ b/packages/experimental/forge/src/types.ts
@@ -142,6 +142,29 @@ export interface MergeRequest {
   readonly headSha: string
 }
 
+/** One inline comment addressed to the old or new side of a pull request diff. */
+export interface ForgeLineComment {
+  readonly path: string
+  readonly side: 'L' | 'R'
+  readonly startLine: number
+  readonly endLine: number
+  readonly body: string
+}
+
+/** A single published comment or one completed review containing all pending comments. */
+export type ForgeReviewRequest = {
+  /** Commit the user reviewed; providers must check it before writing and address that commit explicitly. */
+  readonly headSha: string
+} & (
+  | { readonly kind: 'comment'; readonly comment: ForgeLineComment }
+  | { readonly kind: 'review'; readonly event: 'comment' | 'approve' | 'request-changes'; readonly body: string; readonly comments: readonly ForgeLineComment[] }
+)
+
+/** Result of a review write; unknown outcomes must be checked on the host before another submission. */
+export type ForgeReviewResult =
+  | { readonly ok: true; readonly url: string }
+  | { readonly ok: false; readonly code: 'unsupported' | 'stale' | 'failed' | 'unknown'; readonly message: string }
+
 /** Why a provider could not change a change request. */
 export interface ForgeActionFailure {
   /**
@@ -168,6 +191,8 @@ export interface ForgeReadiness {
 export interface ForgeProvider {
   /** Forge family name stored in every repository this provider returns. */
   readonly forge: string
+  /** Publish a comment or completed review. Omission declares that this provider cannot write reviews. */
+  submitReview?(ref: ChangeRequestRef, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult>
   /** Map a Git remote URL to its repository, or undefined when this provider does not serve it. */
   repositoryFromRemote(url: string): ForgeRepository | undefined
   /** Map a change request web URL to its reference, or undefined when this provider does not serve it. */
@@ -179,6 +204,8 @@ export interface ForgeProvider {
     refs: readonly ChangeRequestRef[],
     signal: AbortSignal,
   ): Promise<ReadonlyMap<ChangeRequestKey, ChangeRequestSnapshot | ForgeFailure>>
+  /** Read all checks for one change request on demand; omission declares that only the polling preview is available. */
+  fetchChecks?(ref: ChangeRequestRef, signal: AbortSignal): Promise<ChangeRequestSnapshot | ForgeFailure>
   /** Find open change requests whose head is `branch` in `repository`, excluding the default branch and forks. */
   findByHead(repository: ForgeRepository, branch: string, signal: AbortSignal): Promise<readonly ChangeRequestRef[]>
   /** Report whether the provider can reach `host` with current credentials. */
diff --git a/packages/experimental/forge/tests/lifecycle.spec.ts b/packages/experimental/forge/tests/lifecycle.spec.ts
index 6793cac698..26e779eb87 100644
--- a/packages/experimental/forge/tests/lifecycle.spec.ts
+++ b/packages/experimental/forge/tests/lifecycle.spec.ts
@@ -120,7 +120,7 @@ it('does not announce provider withdrawal after its registry has stopped', async
   expect(observer).toHaveBeenCalledTimes(1)
 })
 
-it.each(['readiness', 'markReady', 'merge', 'diff', 'fileText'] as const)(
+it.each(['readiness', 'markReady', 'merge', 'diff', 'fileText', 'submitReview', 'fetchChecks'] as const)(
   'cancels and drains %s when its provider stops', async (method) => {
     ctx = await forgeContext()
     const provider: ForgeProvider = new FakeProvider()
@@ -139,10 +139,14 @@ it.each(['readiness', 'markReady', 'merge', 'diff', 'fileText'] as const)(
     vi.spyOn(provider, 'merge').mockImplementation(async (_ref, _request, signal) => { await hold(signal); return undefined })
     vi.spyOn(provider, 'diff').mockImplementation(async (_ref, signal) => { await hold(signal); return 'diff' })
     vi.spyOn(provider, 'fileText').mockImplementation(async (_ref, _commit, _path, signal) => { await hold(signal); return 'file' })
+    provider.submitReview = async (_ref, _request, signal) => { await hold(signal); return { ok: true, url: 'https://fake.test/review' } }
+    provider.fetchChecks = async (target, signal) => { await hold(signal); return snapshot(target) }
     const fiber = await provide(ctx, provider)
     const service = ctx.forge
     const signal = new AbortController().signal
     const calls = {
+      fetchChecks: () => service.fetchChecks(ref(1), signal),
+      submitReview: () => service.submitReview(ref(1), { kind: 'review', headSha: 'a'.repeat(40), event: 'approve', body: '', comments: [] }, signal),
       readiness: () => service.readiness(demo, signal),
       markReady: () => service.markReady(ref(1), signal),
       merge: () => service.merge(ref(1), { method: 'squash', headSha: 'a'.repeat(40) }, signal),
@@ -165,3 +169,33 @@ it.each(['readiness', 'markReady', 'merge', 'diff', 'fileText'] as const)(
     }
   },
 )
+
+it('a check-detail deadline does not replace successfully polled snapshots', async () => {
+  vi.useFakeTimers()
+  ctx = await forgeContext({ fetchTimeoutMs: 30 })
+  const provider: ForgeProvider = new FakeProvider()
+  const a = snapshot(ref(1))
+  const b = snapshot(ref(2))
+  vi.spyOn(provider, 'fetch').mockResolvedValue(new Map([[changeRequestKey(ref(1)), a], [changeRequestKey(ref(2)), b]]))
+  provider.fetchChecks = (_target, signal) => new Promise((_resolve, reject) => {
+    signal.addEventListener('abort', () => { reject(new Error(String(signal.reason))) }, { once: true })
+  })
+  await provide(ctx, provider)
+  const first: ChangeRequestUpdate[] = []
+  const second: ChangeRequestUpdate[] = []
+  ctx.forge.watch(ref(1), (update) => { first.push(update) })
+  ctx.forge.watch(ref(2), (update) => { second.push(update) })
+  await vi.advanceTimersByTimeAsync(0)
+  expect(first.at(-1)).toMatchObject({ snapshot: a })
+  expect(second.at(-1)).toMatchObject({ snapshot: b })
+  const beforeRefresh = second.length
+  const rejected = expect(ctx.forge.fetchChecks(ref(1), new AbortController().signal)).rejects.toThrow('FORGE_FETCH_TIMEOUT')
+  ctx.forge.refresh(ref(2))
+  await vi.advanceTimersByTimeAsync(0)
+  expect(second.length).toBe(beforeRefresh + 1)
+  const initialCounts = [first.length, second.length]
+  await vi.advanceTimersByTimeAsync(30)
+  await rejected
+  expect([first.length, second.length]).toEqual(initialCounts)
+  expect(ctx.forge.latest(ref(2))).toMatchObject({ snapshot: b })
+})
diff --git a/packages/experimental/forge/tests/registry.spec.ts b/packages/experimental/forge/tests/registry.spec.ts
index a54f76a105..c70a07057b 100644
--- a/packages/experimental/forge/tests/registry.spec.ts
+++ b/packages/experimental/forge/tests/registry.spec.ts
@@ -1,7 +1,7 @@
 import { Context } from '@deepseek-ai/cordis'
-import { afterEach, describe, expect, it } from 'vitest'
+import { afterEach, describe, expect, it, vi } from 'vitest'
 import ForgeService, { changeRequestKey } from '../src/index.ts'
-import { demo, FakeProvider, forgeContext, provide, ref } from './fake-provider.ts'
+import { demo, FakeProvider, forgeContext, provide, ref, snapshot } from './fake-provider.ts'
 
 let ctx: Context | undefined
 
@@ -11,6 +11,19 @@ afterEach(async () => {
 })
 
 describe('forge registry', () => {
+  it('reports an unsupported review provider and forwards a supported review unchanged', async () => {
+    ctx = await forgeContext()
+    const provider = new FakeProvider()
+    await provide(ctx, provider)
+    const signal = new AbortController().signal
+    const request = { kind: 'review' as const, headSha: 'a'.repeat(40), event: 'comment' as const, body: 'Check the guard', comments: [] }
+    await expect(ctx.forge.submitReview(ref(3), request, signal)).resolves.toMatchObject({ ok: false, code: 'unsupported' })
+    const submitReview = vi.fn(async () => ({ ok: true as const, url: 'https://fake.test/Octo/Demo/change/3#review' }))
+    Object.assign(provider, { submitReview })
+    await expect(ctx.forge.submitReview(ref(3), request, signal)).resolves.toMatchObject({ ok: true })
+    expect(submitReview).toHaveBeenCalledWith(ref(3), request, expect.any(AbortSignal))
+  })
+
   it('rejects a backoff cap shorter than the active poll interval', async () => {
     ctx = new Context()
     await expect(ctx.plugin(ForgeService, { activeIntervalMs: 30_000, maxBackoffMs: 1_000 }))
@@ -63,6 +76,20 @@ describe('forge registry', () => {
     expect(() => ctx!.forge.fileUrl(ref(1, elsewhere), 'a'.repeat(40), 'x')).toThrow('forge: no provider is registered for "missing"')
   })
 
+  it('reads complete check details when supported without changing polling state', async () => {
+    ctx = await forgeContext()
+    const provider = new FakeProvider()
+    await provide(ctx, provider)
+    const signal = new AbortController().signal
+    await expect(ctx.forge.fetchChecks(ref(3), signal)).resolves.toMatchObject({ code: 'unavailable' })
+    const result = snapshot(ref(3))
+    const fetchChecks = vi.fn(async () => result)
+    Object.assign(provider, { fetchChecks })
+    await expect(ctx.forge.fetchChecks(ref(3), signal)).resolves.toEqual(result)
+    expect(fetchChecks).toHaveBeenCalledWith(ref(3), expect.any(AbortSignal))
+    expect(provider.fetches).toEqual([])
+  })
+
   it('delegates change request reads to the provider of their forge', async () => {
     ctx = await forgeContext()
     const provider = new FakeProvider()
diff --git a/packages/experimental/forge/tests/watch.spec.ts b/packages/experimental/forge/tests/watch.spec.ts
index e64bc0d19f..5760417c26 100644
--- a/packages/experimental/forge/tests/watch.spec.ts
+++ b/packages/experimental/forge/tests/watch.spec.ts
@@ -111,6 +111,9 @@ describe('forge watch', () => {
     expect(provider.fetches).toHaveLength(3)
     await vi.advanceTimersByTimeAsync(60_000)
     expect(provider.fetches).toHaveLength(3)
+    await context.forge.submitReview(ref(1), { kind: 'review', headSha: 'a'.repeat(40), event: 'comment', body: 'Summary', comments: [] }, new AbortController().signal)
+    await vi.advanceTimersByTimeAsync(0)
+    expect(provider.fetches).toHaveLength(4)
   })
 
   it('treats unknown mergeability as active work', async () => {
@@ -378,6 +381,28 @@ describe('forge watch', () => {
     expect(vi.getTimerCount()).toBe(0)
   })
 
+  // Cordis disposes a provider plugin that injects `forge` before the service,
+  // so only a registration owned outside the service's dependents can still
+  // be serving when the service itself stops.
+  it('discards a fetch that settles after the service is disposed', async () => {
+    const provider = new FakeProvider()
+    const release = held(provider, target => snapshot(target))
+    ctx = new Context()
+    const service = ctx.plugin(ForgeService, config)
+    await service
+    ctx.get('forge')!.register(provider)
+    const { updates } = collect(ctx)
+    await vi.advanceTimersByTimeAsync(0)
+    expect(provider.signals).toHaveLength(1)
+
+    const disposal = service.dispose()
+    release()
+    await disposal
+
+    expect(updates).toEqual([])
+    expect(vi.getTimerCount()).toBe(0)
+  })
+
   it('releases a watch when the subscribing fiber is disposed', async () => {
     const provider = new FakeProvider()
     provider.results.set(key, snapshot(ref(1), { checksRollup: 'pending' }))
diff --git a/packages/experimental/hook-protocol/package.json b/packages/experimental/hook-protocol/package.json
index e750b6f1d4..24739313bd 100644
--- a/packages/experimental/hook-protocol/package.json
+++ b/packages/experimental/hook-protocol/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-hook-protocol",
   "description": "Shared Claude Code / Codex hook wire protocol: matcher engine, stdin/exit-code/stdout codec, multi-hook merge, and hook/* session events",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/hooks-claude-code/package.json b/packages/experimental/hooks-claude-code/package.json
index 8f48ff4180..874dc378c9 100644
--- a/packages/experimental/hooks-claude-code/package.json
+++ b/packages/experimental/hooks-claude-code/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-hooks-claude-code",
   "description": "Bridge plugin: run a Claude Code hooks.json / settings hook config on the DeepSeek Harness interception seams",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/hooks-codex/package.json b/packages/experimental/hooks-codex/package.json
index c9f89a2002..df958a7fb7 100644
--- a/packages/experimental/hooks-codex/package.json
+++ b/packages/experimental/hooks-codex/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-hooks-codex",
   "description": "Bridge plugin: run a Codex hooks.json hook config on the DeepSeek Harness interception seams",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/inspector-profile/package.json b/packages/experimental/inspector-profile/package.json
index f34ff109aa..f5f40445dd 100644
--- a/packages/experimental/inspector-profile/package.json
+++ b/packages/experimental/inspector-profile/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-inspector-profile",
   "description": "Optional Web bundle for raw Session logs and Chat node inspection",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/inspector/package.json b/packages/experimental/inspector/package.json
index 43074fc841..f9fcfcaed9 100644
--- a/packages/experimental/inspector/package.json
+++ b/packages/experimental/inspector/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-inspector",
   "description": "Experimental cross-realm CDP hub for Host debugging and Client Runtime inspection",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/inspector/tests/cordis-collector.host.spec.ts b/packages/experimental/inspector/tests/cordis-collector.host.spec.ts
index 77a09f5343..902febcf75 100644
--- a/packages/experimental/inspector/tests/cordis-collector.host.spec.ts
+++ b/packages/experimental/inspector/tests/cordis-collector.host.spec.ts
@@ -52,15 +52,15 @@ describe('Cordis collector live object identities', () => {
     })
     assert(spawned, 'Service consumer did not create a Fiber')
     const fiber = await spawned.await()
-    const canonical: unknown = Object.getPrototypeOf(fiber.ctx)
+    const canonical: unknown = fiber.ctx
     assert(Context.is(canonical))
-    expect(Object.hasOwn(fiber.ctx, SHADOW)).toBe(true)
-    expect(Object.hasOwn(fiber.ctx, 'fiber')).toBe(false)
+    expect(Object.hasOwn(fiber.ctx, SHADOW)).toBe(false)
+    expect(Object.hasOwn(fiber.ctx, 'fiber')).toBe(true)
     expect(Object.hasOwn(canonical, 'fiber')).toBe(true)
     expect(canonical.fiber).toBe(fiber)
     expect(Object.getPrototypeOf(canonical)).toBe(consumer.ctx)
-    expect(Object.getPrototypeOf(fiber.parent)).toBe(consumer.ctx)
-    expect(Reflect.get(fiber.parent, SHADOW)).toBe(provider.ctx)
+    expect(fiber.parent).toBe(consumer.ctx)
+    expect(Reflect.get(fiber.parent, SHADOW)).toBeUndefined()
 
     const snapshot = collector.snapshot()
     expect(snapshot.truncated).toBe(false)
diff --git a/packages/experimental/liveshare-protocol/README.i18n.yaml b/packages/experimental/liveshare-protocol/README.i18n.yaml
index 134ab1cb63..1946be7d9a 100644
--- a/packages/experimental/liveshare-protocol/README.i18n.yaml
+++ b/packages/experimental/liveshare-protocol/README.i18n.yaml
@@ -30,8 +30,8 @@
   en: e773c21200a61a9d
   zh: 57108786433cf892
 /deepseek-ai-dsh-experimental-liveshare-protocol/known-limitations-and-deferred-work:
-  en: eae54e021b06b41b
-  zh: 23fffbaf6d34250a
+  en: 130c67d0129445b7
+  zh: 21009a95b7f7d917
 /deepseek-ai-dsh-experimental-liveshare-protocol/known-limitations-and-deferred-work/dev-note:
   en: e67f633dc6fe7773
   zh: e88aeb617ffb74ea
diff --git a/packages/experimental/liveshare-protocol/README.md b/packages/experimental/liveshare-protocol/README.md
index 13b9085f5d..7228d8f8d0 100644
--- a/packages/experimental/liveshare-protocol/README.md
+++ b/packages/experimental/liveshare-protocol/README.md
@@ -78,7 +78,7 @@ Relay compatibility uses declared versions, capabilities, and explicit refusals,
 ## Known Limitations and Deferred Work
 
 - Gateway requests require the Relay's authenticated actor outside the opaque body; frames without that actor are refused.
-- The Owner Host and worker ship together. The supervisor mints a branded UUID `registrationToken` per logical add, invalidates it on removal, and replays it only for the same retained registration after process restart. Lifecycle, requests, and cancellations echo that token with the share id; per-request `TunnelRequestToken` remains independent. IPC decoders refuse missing identities, and neither token enters Relay URLs or wire frames. Same-package IPC does not negotiate versions; Relay wire frames retain numeric ids and protocol version 1. Compatibility capabilities include `file-upload`, `actor-credential`, and `direct-connection`. An actor may carry an optional owner-verifiable `credential` (the protocol validates its type only; an owner verifies it before trusting the asserted identity, and absence keeps today's Relay-asserted semantics). A share spec may carry `connection`; absence reads as `{ mode: 'relay' }`, and a Relay that still owns the data path refuses a `direct` registration.: a relay registration that declares it may carry `allowsFileUpload` on the share support and access-state frames; every other peer keeps the stored value and a frame without the field reads as uploads off.
+- The Owner Host and worker ship together. The supervisor mints a branded UUID `registrationToken` per logical add, invalidates it on removal, and replays it only for the same retained registration after process restart. Lifecycle, requests, and cancellations echo that token with the share id; per-request `TunnelRequestToken` remains independent. IPC decoders refuse missing identities, and neither token enters Relay URLs or wire frames. Same-package IPC does not negotiate versions; Relay wire frames retain numeric ids and protocol version 1. Compatibility capabilities include `actor-credential` and `direct-connection`. An actor may also carry an optional `displayName` (presentation data only, used for attribution; authorization keeps using the identity triple), and an optional owner-verifiable `credential` (the protocol validates its type only; an owner verifies it before trusting the asserted identity, and absence keeps today's Relay-asserted semantics). A share spec may carry `connection`; absence reads as `{ mode: 'relay' }`, and a Relay that still owns the data path refuses a `direct` registration.
 - Owners declaring `share-access-state` receive committed, id-less ACL/mode/expiry snapshots with a durable monotonic version. The worker forwards snapshots only from its current socket; the Host clears authority on socket loss and refreshes the authenticated requests snapshot before external execution admission. An unavailable snapshot fails closed instead of borrowing persisted ACLs.
 - **Historical release support is not verified** — `tests/frames/v1` records concrete frames and refusal obligations, but does not identify a published Owner release. The gateway declares `LIVESHARE_PROTOCOL_VERSION` and implemented capabilities; the Relay rejects a declared mismatch and sends optional lifecycle frames only to declared consumers. These checks preserve recorded fields and explicit refusals, not a per-release translation or an unbounded support window.
 
diff --git a/packages/experimental/liveshare-protocol/README.zh.md b/packages/experimental/liveshare-protocol/README.zh.md
index 1b26883f47..a6ff3f3fc6 100644
--- a/packages/experimental/liveshare-protocol/README.zh.md
+++ b/packages/experimental/liveshare-protocol/README.zh.md
@@ -78,7 +78,7 @@ Relay 兼容性依靠声明版本、能力和明确拒绝，不提供逐发布
 ## 已知限制与延期工作
 
 - 网关请求必须在不透明请求体之外携带 Relay 已认证主体；没有该主体的帧被拒绝。
-- Owner Host 与 worker 同包发布。Supervisor 为每次逻辑添加生成品牌化 UUID `registrationToken`，移除时使其失效，进程重启只为仍保留的同一注册重播该身份。生命周期、请求及取消事件回传该 token 与分享 ID；逐请求 `TunnelRequestToken` 独立存在。IPC 编解码拒绝缺失身份，两种 token 都不进入 Relay URL 或线协议帧。同包 IPC 不协商版本；Relay 线协议帧保留数字 ID 与协议版本 1。兼容能力包含 `file-upload`、`actor-credential` 与 `direct-connection`。actor 可携带可选的、owner 可验证的 `credential`（协议只校验类型；owner 在采信断言身份前自行验证，缺失时保持今天由 Relay 断言的语义）。分享 spec 可携带 `connection`；缺失读作 `{ mode: 'relay' }`，仍拥有数据面的 Relay 会拒绝 `direct` 注册。：声明它的 Relay 注册可在分享支持与 access-state 帧上携带 `allowsFileUpload`；其它 peer 保留已存值，而缺少该字段的帧读作上传关闭。
+- Owner Host 与 worker 同包发布。Supervisor 为每次逻辑添加生成品牌化 UUID `registrationToken`，移除时使其失效，进程重启只为仍保留的同一注册重播该身份。生命周期、请求及取消事件回传该 token 与分享 ID；逐请求 `TunnelRequestToken` 独立存在。IPC 编解码拒绝缺失身份，两种 token 都不进入 Relay URL 或线协议帧。同包 IPC 不协商版本；Relay 线协议帧保留数字 ID 与协议版本 1。兼容能力包含 `actor-credential` 与 `direct-connection`。actor 还可携带可选的 `displayName`（仅用于展示和归属，授权仍只使用身份三元组），以及可选的、owner 可验证的 `credential`（协议只校验类型；owner 在采信断言身份前自行验证，缺失时保持今天由 Relay 断言的语义）。分享 spec 可携带 `connection`；缺失读作 `{ mode: 'relay' }`，仍拥有数据面的 Relay 会拒绝 `direct` 注册。
 - 声明 `share-access-state` 的 owner 接收已提交、无 id 的 ACL、模式与到期时间快照，快照携带持久单调版本。worker 只转发当前 socket 的快照；Host 在 socket 丢失后清空授权，并在外部执行准入前刷新已认证的请求快照。快照不可用时默认拒绝，不借用持久化 ACL。
 - **历史发布版本支持尚未核实**——`tests/frames/v1` 记录具体帧和拒绝义务，但没有标识已发布的 Owner 版本。网关声明 `LIVESHARE_PROTOCOL_VERSION` 与已实现能力；Relay 拒绝已声明的版本不匹配，仅向已声明消费者发送可选生命周期帧。这些检查保留已录字段和明确拒绝，不提供逐发布版本翻译或无限支持窗口。
 
diff --git a/packages/experimental/liveshare-protocol/package.json b/packages/experimental/liveshare-protocol/package.json
index 7590e18d2d..8b56cf1049 100644
--- a/packages/experimental/liveshare-protocol/package.json
+++ b/packages/experimental/liveshare-protocol/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-liveshare-protocol",
   "description": "Liveshare wire frames and the identity contract shared by the owner bundle and the Relay",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
diff --git a/packages/experimental/liveshare-protocol/src/tunnel-protocol.ts b/packages/experimental/liveshare-protocol/src/tunnel-protocol.ts
index 47c1da1e75..dea08846cb 100644
--- a/packages/experimental/liveshare-protocol/src/tunnel-protocol.ts
+++ b/packages/experimental/liveshare-protocol/src/tunnel-protocol.ts
@@ -29,7 +29,6 @@ export const LIVESHARE_CAPABILITIES = [
   'scoped-rpc-response',
   'unsupported-frame-refusal',
   'share-access-state',
-  'file-upload',
   'actor-credential',
   'direct-connection',
 ] as const
@@ -42,15 +41,13 @@ export type LiveshareCapability = typeof LIVESHARE_CAPABILITIES[number]
  *
  * The owner asks for them in {@link TunnelShareSpec}; the Relay commits them in
  * {@link ShareAccessStateFrame}. The committed frame is the authority: a reader follows it, not the
- * request that produced it. `allowsFileUpload` is optional here because a request may omit the switch,
- * while a committed frame always states it.
+ * request that produced it.
  */
 export interface SharePermissions {
   readonly accessMode: 'open' | 'selected'
   readonly allowedSubjectIds: readonly string[]
   readonly sessionMode?: 'view' | 'write'
   readonly allowsFork?: boolean
-  readonly allowsFileUpload?: boolean
   readonly expiresAt?: string
 }
 
@@ -89,12 +86,6 @@ export interface TunnelShareSpec extends SharePermissions {
    * `write` also modifies the files inside that workspace. Absent reads as `view`.
    */
   readonly sessionMode?: 'view' | 'write'
-  /**
-   * Whether an admitted viewer may attach uploaded files in this share's Session and its own forks.
-   *
-   * Independent of the tier and of {@link TunnelShareSpec.allowsFork}; absent means no file uploads.
-   */
-  readonly allowsFileUpload?: boolean
   /**
    * Relay-issued owner credential proving which logged-in subject publishes this share. The Relay
    * refuses a new share without it and ignores self-reported identity fields when it is present.
@@ -174,6 +165,11 @@ export interface ShareRpcActor {
   /** Provider tenant; the Relay asserts the normalized, non-empty tenant its adapters store. */
   readonly tenantId: string
   readonly subjectId: string
+  /**
+   * Display name the Relay asserted for this identity, when its provider published one. It is
+   * presentation data only: attribution may show it, while authorization uses the triple.
+   */
+  readonly displayName?: string
   /**
    * Owner-verifiable credential asserting this identity, when the deployment's data path has no
    * in-band authority to assert it (a viewer reaching the owner directly). Absent today: the Relay
@@ -243,14 +239,15 @@ export interface ShareAccessStateFrame extends SharePermissions {
    * Absent means no forking.
    */
   readonly allowsFork?: boolean
-  /** Whether this share permits viewer file uploads; always present after parsing, absent means false. */
-  readonly allowsFileUpload: boolean
   readonly expiresAt?: string
 }
 
 /** Every frame exchanged between the Relay and one owner gateway. */
 export type Frame = ShareRpcFrame | ShareRpcResFrame | ShareRpcCancelFrame | ShareAccessStateFrame
 
+/** Every frame the Relay can send: the answers and requests the gateway emits are not among them. */
+export type RelayFrame = ShareRpcFrame | ShareRpcCancelFrame | ShareAccessStateFrame
+
 /** The part of a socket `sendFrame` needs, satisfied by a `ws` WebSocket. */
 export interface FrameSocket {
   readonly readyState: number
@@ -336,7 +333,7 @@ export function parseGatewayFrame(text: string): Frame | undefined {
  * @param value Decoded JSON value.
  * @returns Parsed frame, or undefined when the frame is not accepted.
  */
-function parseRelayValue(value: unknown): Frame | undefined {
+function parseRelayValue(value: unknown): RelayFrame | undefined {
   const state = parseShareAccessState(value)
   if (state !== undefined) return state
   const envelope = frameEnvelope(value)
@@ -358,7 +355,7 @@ function parseRelayValue(value: unknown): Frame | undefined {
  * @param text Raw socket text.
  * @returns Parsed frame, or undefined when the frame is not accepted.
  */
-export function parseRelayFrame(text: string): Frame | undefined {
+export function parseRelayFrame(text: string): RelayFrame | undefined {
   let value: unknown
   try {
     value = JSON.parse(text)
@@ -540,7 +537,6 @@ function isTunnelShareSpec(value: unknown): value is TunnelShareSpec {
     && (value.ownerInstanceId === undefined || typeof value.ownerInstanceId === 'string')
     && (value.allowsFork === undefined || typeof value.allowsFork === 'boolean')
     && (mode === undefined || mode === 'view' || mode === 'write')
-    && (value.allowsFileUpload === undefined || typeof value.allowsFileUpload === 'boolean')
     && (value.connection === undefined
       || (isRecord(value.connection) && (value.connection.mode === 'relay' || value.connection.mode === 'direct')))
     && (value.ownerCredential === undefined || typeof value.ownerCredential === 'string')
@@ -561,6 +557,7 @@ function isShareRpcActor(value: unknown): value is ShareRpcActor {
   return typeof actor.providerId === 'string' && actor.providerId !== ''
     && typeof actor.tenantId === 'string' && actor.tenantId !== ''
     && typeof actor.subjectId === 'string' && actor.subjectId !== ''
+    && (actor.displayName === undefined || (typeof actor.displayName === 'string' && actor.displayName !== ''))
     && (actor.credential === undefined || typeof actor.credential === 'string')
 }
 
@@ -595,13 +592,11 @@ export function parseShareAccessState(value: unknown): ShareAccessStateFrame | u
     || !isSubjectIds(value.allowedSubjectIds)
     || (value.sessionMode !== 'view' && value.sessionMode !== 'write')
     || (value.allowsFork !== undefined && typeof value.allowsFork !== 'boolean')
-    || (value.allowsFileUpload !== undefined && typeof value.allowsFileUpload !== 'boolean')
     || (value.expiresAt !== undefined && (typeof value.expiresAt !== 'string' || !Number.isFinite(Date.parse(value.expiresAt))))) {
     return undefined
   }
   return { type: 'share-access-state', version: Number(value.version), accessMode: value.accessMode,
     allowedSubjectIds: [...value.allowedSubjectIds], sessionMode: value.sessionMode,
-    allowsFileUpload: value.allowsFileUpload === true,
     ...(value.allowsFork === undefined ? {} : { allowsFork: value.allowsFork }),
     ...(value.expiresAt === undefined ? {} : { expiresAt: value.expiresAt }) }
 }
diff --git a/packages/experimental/liveshare-protocol/tests/frames/v1/host-to-worker--add-share.json b/packages/experimental/liveshare-protocol/tests/frames/v1/host-to-worker--add-share.json
index 05c159d2cc..ed59765d51 100644
--- a/packages/experimental/liveshare-protocol/tests/frames/v1/host-to-worker--add-share.json
+++ b/packages/experimental/liveshare-protocol/tests/frames/v1/host-to-worker--add-share.json
@@ -18,7 +18,6 @@
       ],
       "sessionMode": "write",
       "allowsFork": true,
-      "allowsFileUpload": true,
       "dshVersion": "0.2.0-rc.2",
       "ownerInstanceId": "instance-one",
       "expiresAt": "2026-10-03T00:00:00.000Z",
diff --git a/packages/experimental/liveshare-protocol/tests/ipc-token.spec.ts b/packages/experimental/liveshare-protocol/tests/ipc-token.spec.ts
index f077d4190c..d3f2c86a60 100644
--- a/packages/experimental/liveshare-protocol/tests/ipc-token.spec.ts
+++ b/packages/experimental/liveshare-protocol/tests/ipc-token.spec.ts
@@ -44,7 +44,7 @@ const registrationFrames = [
   { type: 'share-closed', registrationToken, shareId: 'share' },
   { type: 'share-error', registrationToken, shareId: 'share', message: 'offline' },
   { type: 'share-access-state', registrationToken, shareId: 'share', version: 1, accessMode: 'open',
-    allowedSubjectIds: [], sessionMode: 'view', allowsFileUpload: false },
+    allowedSubjectIds: [], sessionMode: 'view' },
 ]
 
 describe('Host/worker registration identity', () => {
diff --git a/packages/experimental/liveshare-protocol/tests/protocol-frames.spec.ts b/packages/experimental/liveshare-protocol/tests/protocol-frames.spec.ts
index 790c94b495..ca05f471de 100644
--- a/packages/experimental/liveshare-protocol/tests/protocol-frames.spec.ts
+++ b/packages/experimental/liveshare-protocol/tests/protocol-frames.spec.ts
@@ -190,6 +190,12 @@ describe('additive wire fields reject invalid values', () => {
     expect(request({ credential: 123 })).toBeUndefined()
   })
 
+  it('accepts an actor display name and refuses blank or non-string ones', () => {
+    expect(request({ displayName: '许翰翔' })).toMatchObject({ actor: { displayName: '许翰翔' } })
+    expect(request({ displayName: '' })).toBeUndefined()
+    expect(request({ displayName: 7 })).toBeUndefined()
+  })
+
   it('refuses an unknown connection mode and defaults an absent one to relay', () => {
     const share = {
       shareId: 'share', sessionId: 'session', sessionTitle: 'Source', accessMode: 'selected',
diff --git a/packages/experimental/liveshare-protocol/tests/protocol-utilities.spec.ts b/packages/experimental/liveshare-protocol/tests/protocol-utilities.spec.ts
index c11501861c..019da6f1ba 100644
--- a/packages/experimental/liveshare-protocol/tests/protocol-utilities.spec.ts
+++ b/packages/experimental/liveshare-protocol/tests/protocol-utilities.spec.ts
@@ -203,7 +203,6 @@ describe('tunnel worker commands', () => {
       { ...spec(), expiresAt: 'banana' },
       { ...spec(), allowsFork: 'yes' },
       { ...spec(), sessionMode: 'fork-readonly' },
-      { ...spec(), allowsFileUpload: 'yes' },
       { ...spec(), allowedSubjectIds: 'viewer' },
       { ...spec(), allowedSubjectIds: ['viewer', ''] },
       { ...spec(), allowedSubjectIds: ['viewer', 4] },
@@ -217,7 +216,7 @@ describe('tunnel worker commands', () => {
       ...spec(),
       ownerProviderId: 'p', ownerTenantId: 't', dshVersion: '1.0.0', ownerInstanceId: 'i',
       ownerCredential: 'credential', expiresAt: '2026-10-03T00:00:00.000Z',
-      allowsFork: true, sessionMode: 'write', allowsFileUpload: false,
+      allowsFork: true, sessionMode: 'write',
     }
     expect(parseTunnelWorkerCommand(addShare(allOptional))).toBeDefined()
     expect(parseTunnelWorkerCommand(addShare({ ...spec(), accessMode: 'open' }))).toBeDefined()
@@ -270,14 +269,14 @@ describe('committed authority parsing', () => {
   it('owns the snapshot fields a reader follows', () => {
     expect(parseShareAccessState(state())).toEqual({
       type: 'share-access-state', version: 3, accessMode: 'selected',
-      allowedSubjectIds: ['viewer'], sessionMode: 'view', allowsFileUpload: false,
+      allowedSubjectIds: ['viewer'], sessionMode: 'view',
     })
     expect(parseShareAccessState({
       ...state(), version: 0, accessMode: 'open', sessionMode: 'write', allowsFork: true,
-      allowsFileUpload: true, allowedSubjectIds: [], expiresAt: '2026-10-03T00:00:00.000Z',
+      allowedSubjectIds: [], expiresAt: '2026-10-03T00:00:00.000Z',
     })).toEqual({
       type: 'share-access-state', version: 0, accessMode: 'open', allowedSubjectIds: [],
-      sessionMode: 'write', allowsFork: true, allowsFileUpload: true,
+      sessionMode: 'write', allowsFork: true,
       expiresAt: '2026-10-03T00:00:00.000Z',
     })
   })
@@ -294,7 +293,6 @@ describe('committed authority parsing', () => {
       { ...state(), allowedSubjectIds: [4] },
       { ...state(), sessionMode: 'fork-readonly' },
       { ...state(), allowsFork: 'yes' },
-      { ...state(), allowsFileUpload: 'yes' },
       { ...state(), expiresAt: 4 },
       { ...state(), expiresAt: 'not-a-date' },
     ]
diff --git a/packages/experimental/liveshare-protocol/tests/share-access-state.spec.ts b/packages/experimental/liveshare-protocol/tests/share-access-state.spec.ts
index d42e4b835e..b928607fde 100644
--- a/packages/experimental/liveshare-protocol/tests/share-access-state.spec.ts
+++ b/packages/experimental/liveshare-protocol/tests/share-access-state.spec.ts
@@ -4,7 +4,7 @@ import { parseGatewayFrame, parseRelayFrame, parseTunnelWorkerEvent, LIVESHARE_C
 
 const registrationToken = '12345678-1234-4123-8123-123456789abc'
 const state = { type: 'share-access-state', version: 12, accessMode: 'selected',
-  allowedSubjectIds: ['identity-key'], sessionMode: 'write', allowsFileUpload: false,
+  allowedSubjectIds: ['identity-key'], sessionMode: 'write',
   expiresAt: '2026-10-09T00:00:00Z' }
 
 describe('Relay authority snapshot frame', () => {
@@ -22,15 +22,3 @@ describe('Relay authority snapshot frame', () => {
     expect(parseTunnelWorkerEvent({ ...state, registrationToken, shareId: 'share', ...fields })).toBeUndefined()
   })
 })
-
-describe('share access-state file uploads', () => {
-  it('defaults uploads off when the frame omits the field', () => {
-    const { allowsFileUpload: _ignored, ...legacy } = state
-    expect(parseRelayFrame(JSON.stringify(legacy))).toMatchObject({ allowsFileUpload: false })
-  })
-
-  it('carries an explicit upload permission through', () => {
-    expect(parseRelayFrame(JSON.stringify({ ...state, allowsFileUpload: true })))
-      .toMatchObject({ allowsFileUpload: true })
-  })
-})
diff --git a/packages/experimental/liveshare/README.i18n.yaml b/packages/experimental/liveshare/README.i18n.yaml
new file mode 100644
index 0000000000..34f27d125b
--- /dev/null
+++ b/packages/experimental/liveshare/README.i18n.yaml
@@ -0,0 +1,52 @@
+# Bilingual-pair consistency record for README.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/experimental/liveshare/README.md
+/:
+  en: 01889c844628a948
+  zh: 94366d9239f1c383
+/deepseek-ai-dsh-experimental-liveshare:
+  en: d922aebfcdd341f4
+  zh: 92b631fd849b6d03
+/deepseek-ai-dsh-experimental-liveshare/summary:
+  en: 5079cf4c5eb1d15a
+  zh: 96b21dd402dfae5c
+/deepseek-ai-dsh-experimental-liveshare/table-of-contents:
+  en: d152484eb41ac6b4
+  zh: 405b30feaf48c087
+/deepseek-ai-dsh-experimental-liveshare/use-this-package:
+  en: bbff250eba0f1b89
+  zh: 0a618f05cc88ee2b
+/deepseek-ai-dsh-experimental-liveshare/use-this-package/profile-and-build-requirements:
+  en: 86aa723d77827dca
+  zh: 3cb8774c8c7b1b8c
+/deepseek-ai-dsh-experimental-liveshare/use-this-package/default-visibility-and-enabling:
+  en: fe4942f55344093e
+  zh: dbc07edfe1d702d9
+/deepseek-ai-dsh-experimental-liveshare/use-this-package/owner-configuration:
+  en: 42b24e06e416eb1d
+  zh: 45f7e2003eb3ae2f
+/deepseek-ai-dsh-experimental-liveshare/use-this-package/sign-in-and-manage-shares:
+  en: a23d0162e0efa6a4
+  zh: 0d01659cfeb94640
+/deepseek-ai-dsh-experimental-liveshare/use-this-package/session-tiers:
+  en: f8d810298790cd3a
+  zh: 95fcec905f8d41d5
+/deepseek-ai-dsh-experimental-liveshare/understand-the-implementation:
+  en: 7620555e5da0a2e9
+  zh: 3c40fc8b97004fda
+/deepseek-ai-dsh-experimental-liveshare/further-exploration:
+  en: 0570170704bbe5b6
+  zh: 832f86024b26e5b3
+/deepseek-ai-dsh-experimental-liveshare/model-experience:
+  en: 3b248c02220df02d
+  zh: 9d752fb049a04e83
+/deepseek-ai-dsh-experimental-liveshare/model-experience/kv-cache-effect:
+  en: 22a9da7d4b23a015
+  zh: 5700901ba5f655c8
+/deepseek-ai-dsh-experimental-liveshare/known-limitations-and-deferred-work:
+  en: 6c4107962a32a8e7
+  zh: 2f4d7970b1ac90de
+/deepseek-ai-dsh-experimental-liveshare/known-limitations-and-deferred-work/dev-note:
+  en: e67f633dc6fe7773
+  zh: 8ec3e73528ddb1a6
diff --git a/packages/experimental/liveshare/README.md b/packages/experimental/liveshare/README.md
new file mode 100644
index 0000000000..faa2187dfb
--- /dev/null
+++ b/packages/experimental/liveshare/README.md
@@ -0,0 +1,177 @@
+---
+description: "Share DSH Sessions through a separate Liveshare server, with verified owner sign-in, viewer controls, and bounded execution."
+kind: "package-bundle"
+---
+
+# @deepseek-ai/dsh-experimental-liveshare
+
+English | [中文](README.zh.md)
+
+## Summary
+
+Share a Session with colleagues through the normal DSH browser interface. The owner chooses viewing or bounded writing, and independently allows forking; the owner host enforces those choices. Attachment upload follows sharing itself: a Session the viewer can see accepts files. This opt-in bundle adds owner sign-in, sharing controls, the outgoing gateway, and the viewer surfaces of the owner's own Web page. The default Web profile excludes it. The separately deployed Liveshare server authenticates viewers and transports their requests; its OAuth, database, routing, and deployment implementation are not part of this package.
+
+## Table of Contents
+
+- [Use this package](#use-this-package)
+- [Understand the implementation](#understand-the-implementation)
+- [Further Exploration](#further-exploration)
+- [Model Experience](#model-experience)
+- [Known Limitations and Deferred Work](#known-limitations-and-deferred-work)
+- [Dev Note](#dev-note)
+
+-----
+
+<a id="use-this-package"></a>
+## Use this package
+
+### Profile and build requirements
+
+The manifest declares an installable `dsh.bundle` layer and a browser face. The bundle stays hidden until a profile enables it, as described in [Default visibility and enabling](#default-visibility-and-enabling); supported applications still start through `dsh --profile`.
+
+Owner, viewer, and the Liveshare server must use matching protocol versions. The build includes the Owner's gateway process; the viewer page has no separate build. Package version, exports, and publication contents are declared in [package.json](package.json).
+
+<a id="default-visibility-and-enabling"></a>
+
+### Default visibility and enabling
+
+A dsh installation ships this package as a runtime dependency, but no shipped profile selects its bundle, so none of its plugins run and the plugin manager lists it in neither **Built-in plugin settings** nor **Experimental plugins**, including the **More** page. The bundle ID stays addressable, so a page that opens a bundle by ID still reaches this bundle's details.
+
+Enable it by inserting its two entries into the active profile's patch file, `$DSH_HOME/profiles/<profile>/cordis.patch.yml`. That file is one YAML sequence of Loader patches; these are the entries the bundle's own [patch](cordis.patch.yml) inserts, and `!!js` expressions are allowed there:
+
+```yaml
+- insert:
+    - id: liveshare-viewer-declarations
+      name: '@deepseek-ai/dsh-experimental-liveshare/viewer-declarations'
+    - id: liveshare-share-host
+      name: '@deepseek-ai/dsh-experimental-liveshare'
+      config:
+        ownerIdentityProvider: <provider-id>
+        ownerIdentityTenant: <tenant-id>
+        ownerIdentitySubject: <subject-id>
+        allowedSubjectIds: []
+        ownerStateFile: /path/to/owner-shares.json
+```
+
+Replace every `<...>` placeholder with the deployment's own value: the identity provider, tenant, and subject are the ones its Liveshare server deployment was configured with, and the example holdings are placeholders rather than real identities. The environment layer works too: set `LIVESHARE_*` in `$DSH_HOME/.env` and keep the bundle's own `!!js process.env.…` expressions. The Liveshare server address is not part of this configuration: the owner enters it in the Share dialog on first use, as Owner configuration below describes.
+
+The profile can select the bundle instead of patching it: add `"@deepseek-ai/dsh-experimental-liveshare"` to `dsh.profile.bundles` in `$DSH_HOME/profiles/<profile>/package.json`, which is the write the card's switch performs once the card is listed.
+
+Either route takes effect only on a recomposition. With the profile's HMR row enabled, the change applies when the profile is re-read; without it, the next `dsh` start applies it. Once at least one row the bundle declares runs, its card appears under **Experimental plugins** and on the **More** page. Removing the entries, disabling them, or removing the bundle from `dsh.profile.bundles` stops those rows and the card leaves both lists again.
+
+### Owner configuration
+
+| Variable | Default | Meaning |
+|---|---|---|
+| `LIVESHARE_OWNER_PROVIDER_ID` / `LIVESHARE_OWNER_TENANT_ID` / `LIVESHARE_OWNER_SUBJECT_ID` | unset | Owner identity used for legacy subject matching; it does not replace a server-issued credential |
+| `LIVESHARE_OWNER_DISPLAY_NAME` | unset | Display label for the configured identity |
+| `LIVESHARE_ALLOWED_SUBJECTS` | empty | Deployment-wide subject allowlist in addition to the share's access rules |
+| `LIVESHARE_OWNER_STATE_FILE` | `$DSH_HOME/liveshare/owner-shares.json` | Stored share metadata, the saved Liveshare server address, instance identity, and management tokens |
+| `LIVESHARE_OWNER_CREDENTIAL_FILE` | `owner-credential.json` beside the state file | Stored credential bound to the Liveshare server that issued it |
+
+The Liveshare server address is set on first use: enter it in the Share dialog's address field and save it. The saved address persists in the owner state file, and later shares publish to it; a publication already waiting for registration keeps its starting server address in its registration, stored record, and returned link, and existing shares retain their recorded Liveshare server address. Clearing the saved address through the share-management Remote leaves this host without one — creating a share then reports that an address has to be saved — rather than falling back to a deployment value. The name a reader sees beside a share comes from the display name on the Relay-verified credential, and local configuration cannot override it; a credential that carries only a subject shows that subject's label. Provider application secrets belong to the Liveshare server, not this configuration.
+
+### Sign in and manage shares
+
+The Share dialog starts a short-lived authorization transaction on the Owner. A popup returns a single-use code only to the expected window, origin, and transaction. The Owner redeems it with its private verifier and saves the credential bound to that Liveshare server; the normal browser login flow never stores that credential in browser storage or a URL. Expired, cancelled, replayed, or mismatched transactions fail closed. Changing the Liveshare server during code redemption, including a change away and back, refuses login before credential storage. After storage commits, probes and share claims retain that operation’s Liveshare server and credential identity. Publishing without verified identity is refused, including when the Liveshare server does not support identity binding.
+
+Share management is the `liveshareShares` Typert Remote: the share list, creation, stopping, tier and fork changes, endpoint selection, the Liveshare server state, the owner identity, the audit trail the Liveshare server holds, and both Liveshare server checks are methods on the mounted namespace. The sign-in round trip and credential storage are the only same-origin HTTP routes the owner page still calls.
+
+The owner admits viewers by organization link; the deployment's `LIVESHARE_ALLOWED_SUBJECTS` gates every share and narrows an organization-link share to the subjects it lists. Stored `selected` or `approval` shares keep their original ACL and access summary, and the dialog no longer creates them; `liveshareShares.create` keeps `accessMode` and `allowedSubjectIds` for those records and direct Remote callers. Manage Shares lists stored links, tiers, availability, and the Liveshare server's audit responses, and it can change a share's tier, turn its fork switch on or off, and stop a share. Failed operations remain visible as errors; the UI re-reads the Owner's response rather than treating a click as success. The Share dialog edits an existing share too: its tier, fork switch, and plugin endpoints are picked there and submitted by one save that sits outside the scrolling fields and re-reads the Owner's record; unsaved picks are stated, and closing first warns that they would be discarded.
+
+### Session tiers
+
+| Tier | Viewer actions | Execution limit |
+|---|---|---|
+| `view` | Prompt the source Session and stop its running turn | Read-only sandbox mounted on the Session, applied to every turn a share viewer starts: that turn may use the read and search surface (`read`, `read_image`, `glob`, `grep`, `present`), the tools with no local file effect (`todo_write`, `skill`, `web_search`, `web_fetch`); every path a call declares is checked against the granted workspace |
+| `write` | Also modify files inside that workspace | Writable sandbox with limits: the view surface plus bounded `edit` and `write` inside the granted workspace, for every viewer-started turn of the Session |
+
+Both tiers drive the shared Session; what separates them is writing. The sandbox is mounted on the Session for as long as any share over it is active, but it confines only the turns a share viewer starts: a turn the owner starts keeps the Session's own tools, including `bash` and its unrestricted filesystem tools, and an owner's steering input inside a viewer's turn stays confined with it. The decision is kept in Host memory per turn and never written to the Session log; stopping every share or letting them all expire releases the layer and restores the Session's own tools. Forking is not a tier: the share carries its own switch, independent of the tier, and a viewer it admits forks a completed source prefix into a child that runs under the read-only ceiling, or under the bounded-write ceiling when the share is at the `write` tier.
+
+Attachment uploads are neither a tier nor part of the fork switch: they follow visibility. An admitted viewer may attach uploaded files to the shared Session and to the forks it created through this share, whichever tier the share carries and whether or not it allows forking. The owner has no separate attachment switch.
+
+No tier grants Session configuration, renaming, archival, Workspace management, or the owner's global settings and credentials; attachment uploads follow visibility and are not a tier grant. The Owner Gateway refuses a viewer's `settings/describe`, `credentials/describe`, `agentPresets/list`, `agentPresets/read`, and every other endpoint the share does not grant with the Remote failure `remote-access/denied` (reason `liveshare/read-only`); configuration values, credential-reference metadata, and preset plugin configuration are not viewer data. The viewer keeps its local presentation defaults. Those management decisions stay independent from permission to prompt a Session. **Temporary:** a plugin that owns an endpoint this page needs offers it through [`viewerDeclarationsOf(ctx)`](src/host/viewer-declarations.ts) — `registerViewerReadable(actions)` for endpoints that change nothing, `registerViewerWritable(actions)` for endpoints that write — until endpoint-level access declarations in Typert metadata replace this surface. **An offer grants nothing by itself**: the owner exposes a plugin's endpoints one share at a time, and a share exposes an endpoint only where that plugin's live offer and that share's own selection name it, on the resources the reader can see. A writable selection rides the share's own write rule, so **it takes effect only in a share whose Session already allows writes and whose source execution is confined, and no offer and no selection turns a read-only share into a writable one**; either kind leaves the actions this policy already decides — `session/prompt`, `session/cancel`, `session/fork`, and the rest of its roles — to the mode's own answer. The owner's own page opens with the owner access baseline, so its interface is unchanged.
+
+The Owner Gateway decides each call on the Session and Workspace it names and refuses a call whose target is missing or invalid. The viewer's Session list and workspace membership are trimmed to the source and the children that viewer owns. The page reads each Session's own answer from the reader's access snapshot, so a selection change never carries the previous Session's permission across. Unknown or unreadable modes fail closed. The Owner rechecks admission for source and child calls; revocation cancels the affected calls and streams, and a share whose admission narrows stops the shared Session's running turn. The page distinguishes authentication, access, expiry, stopped shares, offline owners, and transport failures, and retries only the failures classified as repeatable.
+
+-----
+
+<a id="understand-the-implementation"></a>
+## Understand the implementation
+
+<details>
+<summary>Implementation internals — click to expand</summary>
+
+The viewer page is the Owner's own Web shell. The Liveshare server fetches the Owner's rendered index document through an `asset` read and places the carrier script from [viewer-carrier.ts](../liveshare-protocol/src/viewer-carrier.ts) first in it. Shell assets, client plugin bundles, and the three exact top-level files the index references against the document base — `manifest.webmanifest`, `favicon.svg`, and `favicon-dark.svg` — arrive through the same read, from the Owner's frontend reader and client module registry, so the page runs every Owner plugin at the Owner's version. Source maps are refused on every asset path, and that check is the authoritative one: an `asset` read forwarded through the Liveshare server arrives here unread, so the Liveshare server's own same-named rule covers its page-resource route only. The served document also drops its manifest link, which a browser would otherwise fetch without credentials. The carrier converts Connection calls and Gateway streams into `POST {base}/__share/rpc` requests, and forwards the read-only page-origin owner routes the Liveshare server cannot answer — `/open-in-app/apps` and `/api/present.host` — through that channel instead of leaving them to the Liveshare server's tail. The Liveshare server supplies the authenticated actor outside the opaque body. The Owner's read handler dispatches each reader's calls and streams into its own Connection and Gateway as one Peer per share and reader, whose `share-viewer` principal carries the share and the server-asserted identity. The Gateway decides that Peer's calls, and the Session notifications it forwards to it, through [`dsh-api-remote-access`](../../api/remote-access/README.md) from the `share-viewer` policy this package registers: a served reader holds read roles on the shared Session, its own forks, and the Workspaces holding them, fork and write roles whose conditions apply the share's tier and its own fork switch, and nothing else; attachment upload rides the read roles. The read handler keeps the share-lifecycle refusals, Liveshare server authority refresh, cold Session preparation, and fork orchestration, reads the policy's write rules before it prepares or dispatches a prompt or stop, and disposes a reader's Peer when its grant ends, the share stops or expires, or a re-check refuses it. Preparing a share's source Session also starts when a reader asks for its page or opens a stream, so a host that restarted before that Session's agent was live still gains the actions it drives with; a share whose Session cannot be confined states that instead of the read-only fact. This package's browser face mounts the viewer surfaces when the carrier's `__DSH_LIVESHARE_VIEWER__` global is present and the Share action otherwise. The served index assigns the reader's own access snapshot to the global that every index sets to the owner baseline, and the page then follows the reader's `remoteAccess/follow` snapshot; CSS hiding is not authorization.
+
+Fork requests bind the actor, share, source, operation identity, and completed prefix. A durable reservation and the recorded child let a retry of a recorded operation replay the same child; the owner's `SessionForkRequest` mints the child id, so a request interrupted after the child was created but before it was recorded forks again. Registry mutations are asynchronous and resolve only after locked read-modify-write and atomic publication; callers must await reservation, recording, and revocation. Cold activation uses the Host’s ordinary Agent lookup, with serial `agent/created` enforcement before queued input can run, not a Remote `session/prepare` endpoint. The child scope retains one fail-closed guard; reconnection replaces its enforcement installation, and releasing an old installation cannot remove its successor.
+
+A reader's prompt reaches the Session as a `user-rpc` message whose `source.principal` names that reader, and the pre-step re-checks every entering message's viewer against the Relay's admission before it reaches the model. Execution is confined per turn: while any share over the Session is active, a turn whose admitted input names a share viewer runs the Host's confined replacements for the read and search surface (`read`, `read_image`, `glob`, `grep`, `present`), for the tools with no local file effect (`todo_write`, `skill`, `web_search`, `web_fetch`), and, when some share may write, its bounded `edit` and `write`. Every other tool is refused to that turn, and every path a permitted call declares is resolved and checked against the granted root. An owner-started turn keeps the Session's native tools until the last share stops or expires. The turn decision is Host memory only, recomputed for each turn and never appended to the Session log. Each operation re-reads the shares' current Relay grants and checks the resolved target against the granted root. A reader's stop is dispatched through the Gateway like a prompt: the `share-viewer` policy admits it while the share's tier is established and the Session is confined, and the owner's own Session controller stops whatever turn the Session is running, including one the owner started. Reads and writes preserve the normal write-observation policy. See the [LiveShare subsystem](../../../docs/subsystems/liveshare.md) for the execution rules.
+
+| Owner | Source |
+|---|---|
+| Login, credential storage, and gateway lifetime | [share-host.ts](src/host/share-host.ts) |
+| Share-management operations and their `liveshareShares` Remote | [share-operations.ts](src/host/share-operations.ts), [share-remote.ts](src/host/share-remote.ts) |
+| Viewer request dispatch, reader Peers, and the access policy | [viewer-read.ts](src/host/viewer-read.ts), [viewer-principal.ts](src/host/viewer-principal.ts), [viewer-access-policy.ts](src/host/viewer-access-policy.ts), [viewer-declarations.ts](src/host/viewer-declarations.ts), [source-access.ts](src/host/source-access.ts) |
+| Fork records and runtime enforcement | [fork-registry.ts](src/host/fork-registry.ts), [fork-enforcement.ts](src/host/fork-enforcement.ts), [shared-tools.ts](src/host/shared-tools.ts) |
+| Page carrier, viewer surfaces, and served-page reads | [viewer-carrier.ts](../liveshare-protocol/src/viewer-carrier.ts), [client/index.ts](src/client/index.ts), [viewer-session-plugin.ts](src/client/viewer-session-plugin.ts), [viewer-assets.ts](src/host/viewer-assets.ts) |
+| Shared identity and frame definitions | [protocol package](../liveshare-protocol/README.md) |
+| Registration and socket-scoped request correlation | [registration-url.ts](src/owner-gateway/registration-url.ts), [pending-rpc.ts](src/owner-gateway/pending-rpc.ts) |
+
+Registration declares the wire version and optional capabilities. A declared mismatch receives HTTP 426; there is no version translation. IPC requests use unique tokens bound to their original socket and worker generation; responses and cancellation match token, share id, and Liveshare server id. Unsupported requests receive a scoped refusal when they can be correlated.
+
+The optional `share-access-state` frame and authenticated request-list response supply complete, versioned Liveshare server authority. The Host retains the Owner's selected mode separately and uses the narrower mode for execution. All complete request-list reads, including management reads, apply the same version and generation checks; missing authority invalidates admission. A request that first discovers revocation receives `403 viewer-not-authorized`, while other revoked work is cancelled. The `share-viewer` policy and `agent/pre-step` bind the receiving Session to the share's source or that actor's recorded child. Queued external input refreshes authority even after restart; a deleted share cannot authorize recovered Inbox input. See the [shared protocol reference](../liveshare-protocol/README.md) for snapshot fields.
+
+Viewer streams belong to their opening actor. Notifications and control projections expose only the source and that actor’s children; interactive approvals and questions remain on the Host. `forkLineage` is a LiveShare-owned UI projection, not a grant. The per-Session grants of the reader's access snapshot decide whether the page offers prompt and stop, independently of display lineage.
+
+The external Liveshare server's service, stores, OAuth provider, and deployment remain separately owned. Owner-only tests live here; tests that start both complete products remain with the upper Liveshare server integration.
+
+</details>
+
+-----
+
+<a id="further-exploration"></a>
+## Further Exploration
+
+- [LiveShare subsystem](../../../docs/subsystems/liveshare.md)
+- [Owner decision record](../../../.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.md)
+- [Web bundle](../../bundle/web-app/README.md)
+
+-----
+
+<a id="model-experience"></a>
+## Model Experience
+
+Indirectly, through the host driving viewer prompts into the shared Session, so a model request follows the viewer input that host forwards as that Session's ordinary user input.
+
+#### KV Cache effect
+
+Viewer prompts enter the shared Session as ordinary user input, so they extend the same cached prompt prefix the owner's own input extends; the bundle adds no request field, tool, or system-prompt text of its own.
+
+## Known Limitations and Deferred Work
+
+<a id="known-limitations-and-deferred-work"></a>
+
+- Owner, viewer, and the Liveshare server require matching versions; cross-version compatibility is not established.
+- The owner cannot refuse attachment uploads for an admitted viewer: a viewer that may read a Session may also attach files to it, independent of the tier and of the fork switch. This is an accepted risk.
+- Viewer file operations are confined by a path check against the granted root, so a local process that swaps a directory inside the grant for a symlink between the check and the open can redirect them; directory-handle anchoring is deferred to a separate change. Viewer tools are limited to the confined read and search surface (`read`, `read_image`, `glob`, `grep`, `present`), the tools with no local file effect (`todo_write`, `skill`, `web_search`, `web_fetch`), and, at the write tier, bounded `edit` and `write`; `bash`, `pwsh`, `cua`, `plugin_manager`, the `schedule_*` tools, and every tool that surface does not name are not granted.
+- The viewer has no separate workspace-file editing interface and no management authority.
+- Endpoint capabilities are temporary and trusted without review: the registry checks only that a name is a `<namespace>/<method>` Remote endpoint, so a selected endpoint becomes callable by every authenticated share viewer on the resources the policy binds, and the endpoint's own confinement is the only limit on what a viewer reaches through it. A selected writable endpoint is destructive inside a share that already allows writes. Capabilities cover the `global`, `session`, and `workspace` resource kinds only, and an `event:` name is rejected.
+- The owner picks one exposure tier per share in the share panel — unavailable, read-only, or writable — which starts unavailable and applies to every plugin that declares endpoints; the manager lists what each share already exposes. The tier expands at save time into the endpoints the plugins declare then, so the stored record stays an explicit endpoint list and an endpoint a plugin adds later stays closed until the owner saves again. A tier the live offer cannot fill is not selectable: with no writable endpoint declared anywhere, writable is stated as unavailable instead of degrading to read-only. One save writes the share's tier, fork switch, and endpoints in that order; a refusal of the endpoint write leaves the permission write stored, states the failure, and keeps the owner's picks for a retry. The selection is share-wide: every admitted viewer of that share may call a selected endpoint on the resources the policy binds, and per-viewer endpoint levels are not established. A selection the offering plugin no longer declares exposes nothing, but stays in the stored record until the owner saves again; a record that is no whole tier reads as unavailable and says that saving replaces it.
+- A Workspace that stops holding a Session the reader can see leaves the reader's Workspace feed only at that Workspace's or the Workspace order's next change ([remote access limitation](../../api/remote-access/README.md#known-limitations-and-deferred-work)).
+- Registry file locking prevents concurrent file writes from dropping durable entries, but each registry reads its own in-memory snapshot. Owner share-state updates and gateway ownership are not coordinated across Hosts; use one active Owner Host per home. This is not a multi-host authorization service.
+- No runtime invariant companion is published: authorization is checked in the operations themselves, and this package has no separate invariant observer.
+- A worker restart re-registers retained shares but does not replay viewer streams; viewers recover through their transport. Registration refusals 401, 403, 410, and 426 stop that share’s reconnect loop until something registers it again: republishing or changing its tier does, and so does storing a credential for that Liveshare server, which registers the shares that address left offline. A restore presents the credential this host holds for the share’s Liveshare server whatever this host’s own expiry read says, because the Liveshare server renews the login behind it and only the Liveshare server decides whether that credential still authorizes; a new share is still refused on that same local read.
+- The access mode grants `view` admission, while effective fork/write authority comes from the share mode. Per-viewer execution levels and immediate cross-instance stop/cancellation completion are not established; cancellation cannot undo committed writes. A write-to-readonly snapshot denies later writes but does not promise immediate cancellation of a running child turn.
+- Final assembled snapshot verification remains required before the feature is ready for release.
+- On the viewer page, client reads that bypass the Connection carrier (deliverable reads, open-in-app, PDF assets, HMR events) reach the Liveshare server rather than the Owner; the index document's root-absolute manifest and icon links do not resolve under a Liveshare server prefix.
+
+<a id="dev-note"></a>
+### Dev Note
+
+<details>
+<summary>Working context for maintainers — click to expand</summary>
+
+None.
+
+</details>
diff --git a/packages/experimental/liveshare/README.zh.md b/packages/experimental/liveshare/README.zh.md
new file mode 100644
index 0000000000..50ebcfeaae
--- /dev/null
+++ b/packages/experimental/liveshare/README.zh.md
@@ -0,0 +1,177 @@
+---
+description: "通过独立的 Liveshare 服务端分享 DSH 会话，提供已验证的所有者登录、查看者控制和受限执行。"
+kind: "package-bundle"
+---
+
+# @deepseek-ai/dsh-experimental-liveshare
+
+[English](README.md) | 中文
+
+## 概述
+
+通过常规 DSH 浏览器界面向同事分享会话。所有者选择查看或受限写入，并单独决定是否允许分叉会话；所有者主机执行这些选择。附件上传属于分享本身：查看者可见的会话都可以接收文件。这个可选组合包增加所有者登录、分享控件、出站网关，以及所有者自身 Web 页面中的查看页界面。默认 Web profile 不包含它。单独部署的 Liveshare 服务端验证查看者并传输请求；其 OAuth、数据库、路由和部署实现不属于本包。
+
+## 目录
+
+- [使用本包](#use-this-package)
+- [理解实现](#understand-the-implementation)
+- [延伸阅读](#further-exploration)
+- [模型体验](#model-experience)
+- [已知限制与后续工作](#known-limitations-and-deferred-work)
+- [开发备注](#dev-note)
+
+-----
+
+<a id="use-this-package"></a>
+## 使用本包
+
+### Profile 与构建要求
+
+manifest（元数据清单）声明可安装的 `dsh.bundle` 层和浏览器端入口。该组合包在被 profile 启用前保持隐藏，见[默认可见性与启用](#default-visibility-and-enabling)；受支持的应用仍通过 `dsh --profile` 启动。
+
+Owner、查看页和 Liveshare 服务端必须使用匹配的协议版本。构建包含 Owner 网关进程；查看页没有单独的构建。包版本、导出和发布内容由 [package.json](package.json) 声明。
+
+<a id="default-visibility-and-enabling"></a>
+
+### 默认可见性与启用
+
+dsh 安装会把本包作为运行时依赖一起安装，但没有任何随发行版交付的 profile 选中它的组合包，因此它的插件一条都不会运行，插件管理器既不会在**内置插件配置**里列出它，也不会在**实验性插件**（含**更多**页）里列出。组合包 ID 仍可按 ID 打开，因此按 ID 打开组合包的页面仍能到达它的详情。
+
+要启用它，把它的两条条目插入当前 profile 的 patch 文件 `$DSH_HOME/profiles/<profile>/cordis.patch.yml`。该文件是一个 YAML 序列的 Loader patch；这两条就是组合包自己的 [patch](cordis.patch.yml) 插入的条目，其中允许使用 `!!js` 表达式：
+
+```yaml
+- insert:
+    - id: liveshare-viewer-declarations
+      name: '@deepseek-ai/dsh-experimental-liveshare/viewer-declarations'
+    - id: liveshare-share-host
+      name: '@deepseek-ai/dsh-experimental-liveshare'
+      config:
+        ownerIdentityProvider: <provider-id>
+        ownerIdentityTenant: <tenant-id>
+        ownerIdentitySubject: <subject-id>
+        allowedSubjectIds: []
+        ownerStateFile: /path/to/owner-shares.json
+```
+
+把每个 `<...>` 占位符换成部署自己的值：身份 provider、tenant 与 subject 是该部署的 Liveshare 服务端配置使用的值，示例中的都是占位符而非真实身份。环境层同样可用：在 `$DSH_HOME/.env` 里设置 `LIVESHARE_*`，并保留组合包自己的 `!!js process.env.…` 表达式。Liveshare 服务端地址不属于这里的配置：首次使用时由所有者在分享弹窗里填写，见下文的所有者配置。
+
+profile 也可以改为选中组合包：在 `$DSH_HOME/profiles/<profile>/package.json` 的 `dsh.profile.bundles` 里加入 `"@deepseek-ai/dsh-experimental-liveshare"`；卡片可见后，卡片上的开关执行的就是这次写入。
+
+两条路线都只在重新组合时生效。profile 的 HMR 行开启时，改动在 profile 被重新读取后应用；没有 HMR 时，等下一次 `dsh` 启动才应用。只要组合包声明的行有一条在运行，它的卡片就会出现在**实验性插件**下，也出现在**更多**页。删除这些条目、把它们置为 disabled，或把组合包从 `dsh.profile.bundles` 移除，都会停止这些行，卡片也随之从两个列表消失。
+
+### 所有者配置
+
+| 变量 | 默认值 | 含义 |
+|---|---|---|
+| `LIVESHARE_OWNER_PROVIDER_ID` / `LIVESHARE_OWNER_TENANT_ID` / `LIVESHARE_OWNER_SUBJECT_ID` | 未设置 | 用于旧主体匹配的所有者身份；不替代 Liveshare 服务端签发的凭据 |
+| `LIVESHARE_OWNER_DISPLAY_NAME` | 未设置 | 配置身份的显示标签 |
+| `LIVESHARE_ALLOWED_SUBJECTS` | 空 | 分享访问规则之外的部署级主体允许列表 |
+| `LIVESHARE_OWNER_STATE_FILE` | `$DSH_HOME/liveshare/owner-shares.json` | 保存分享元数据、已保存的 Liveshare 服务端地址、实例身份和管理 token |
+| `LIVESHARE_OWNER_CREDENTIAL_FILE` | 状态文件旁的 `owner-credential.json` | 保存绑定至签发它的 Liveshare 服务端的凭据 |
+
+Liveshare 服务端地址在首次使用时设置：在分享弹窗的地址输入框里填写并保存。保存的地址持久化在 owner state 文件中，之后创建的分享都发布到该地址；已经等待注册的发布在注册信息、持久记录和返回链接中保留起始服务端地址，已有分享保留记录中的 Liveshare 服务端地址。经分享管理 Remote 清除保存的地址后，这个宿主就没有地址可用——此时创建分享会明确要求先保存地址，而不是回退到某个部署默认值。读者看到的分享者名称来自 Relay 验证凭据上的显示名，本地配置不能覆盖它；凭据只带主体时显示主体标签。提供方应用密钥属于 Liveshare 服务端，不属于这里的配置。
+
+### 登录与管理分享
+
+分享对话框在 Owner 上创建短期授权事务。弹窗只向预期窗口、来源和事务返回一次性代码。Owner 使用私有校验值兑换代码并保存绑定该 Liveshare 服务端的凭据；正常浏览器登录流程不会把该凭据存入浏览器存储或 URL。过期、取消、重放或不匹配的事务均拒绝。代码兑换期间更改 Liveshare 服务端，包括切换后再切回，会在保存凭据前拒绝登录。存储提交后，探测和分享认领保留该操作的 Liveshare 服务端与凭据身份。未验证身份时禁止发布，Liveshare 服务端不支持身份绑定时也一样。
+
+分享管理本身走 `liveshareShares` Typert Remote：分享列表、创建、停止、档位与分叉开关变更、端点选择、Liveshare 服务端状态、所有者身份、Liveshare 服务端保存的审计以及两项服务端检查都是挂载命名空间上的方法。登录往返与凭据保存是所有者页面仍然调用的仅有的同源 HTTP 路由。
+
+所有者通过组织链接接纳查看者；部署的 `LIVESHARE_ALLOWED_SUBJECTS` 作用于每份分享，把组织链接分享的准入收窄到它列出的主体。已存储的 `selected` 或 `approval` 分享保留原有 ACL 与访问摘要，弹窗不再创建这类分享；`liveshareShares.create` 的 `accessMode` 与 `allowedSubjectIds` 只保留给这些记录与直接 Remote 调用方。管理分享页面列出保存的链接、档位、可用状态及 Liveshare 服务端的审计响应，并可修改分享档位、开关「允许分叉会话」以及停止分享。失败操作显示错误；界面重新读取 Owner 响应，不把点击本身当作成功。分享弹窗也能修改已有分享：档位、分叉开关与插件端点在弹窗里选择，由滚动区之外的一次保存一并提交，并在保存后回读 Owner 的记录；未保存的选择会明确标出，关闭前先提示它们会被丢弃。
+
+### 会话档位
+
+| 档位 | 查看者操作 | 执行限制 |
+|---|---|---|
+| `view` | 向源会话发送提示词，并停止其正在运行的轮次 | 挂在会话上的只读沙箱，只约束分享查看者发起的轮次：该轮次只能使用读取与检索面（`read`、`read_image`、`glob`、`grep`、`present`）、无本地文件副作用的工具（`todo_write`、`skill`、`web_search`、`web_fetch`）；每次调用声明的每个路径都按获授工作区检查 |
+| `write` | 还可修改该工作区内的文件 | 有上限的可写沙箱：读取与检索面加上有界 `edit` 与 `write`，同样作用于查看者发起的轮次 |
+
+两档都会驱动共享会话，区别在于能否写入。沙箱挂在会话上，只要该会话还有分享活跃就会安装，但它只约束分享查看者发起的轮次：所有者自己发起的轮次保留会话原生工具，包括 `bash` 与不受限的文件工具；所有者在查看者轮次中追加的输入仍留在该受限轮次内。该判定只存在于 Host 内存、按轮次重算，不写入会话日志；所有分享停止或全部过期后执行层被释放，会话恢复自己的工具。分叉会话不是一个档位：分享自带独立开关，与档位无关；被允许的查看者可从已完成的源前缀分叉出会话，分叉会话运行在只读上限下；分享处于 `write` 档时改为受约束的写上限。
+
+附件上传既不是档位，也不属于分叉开关：它跟随可见性。无论分享处于哪个档位、是否允许分叉，已准入的查看者都可以向共享会话以及自己通过本分享分叉出的会话上传附件。所有者没有单独的附件开关。
+
+任何档位都不授予会话配置、重命名、归档、工作区管理或所有者全局设置与凭据权限；附件上传跟随可见性，不是档位授予。Owner Gateway 以 Remote 失败 `remote-access/denied`（reason 为 `liveshare/read-only`）拒绝查看者的 `settings/describe`、`credentials/describe`、`agentPresets/list`、`agentPresets/read` 以及分享未授予的其它端点；配置值、凭据引用元信息及 preset 插件配置不属于查看者数据。查看者保留本地展示默认值。这些管理决定与向会话发送消息的权限保持独立。**临时机制**：拥有本页所需端点的插件通过 [`viewerDeclarationsOf(ctx)`](src/host/viewer-declarations.ts) 提供能力——不改动任何状态的端点用 `registerViewerReadable(actions)`，会写入的端点用 `registerViewerWritable(actions)`——直到 Typert 元数据中的端点级访问声明取代这一接口。**提供能力本身不授予任何权限**：owner 按分享逐个开放某插件的端点，只有该插件的当前能力与这份分享自己的选择都指明同一端点、且资源在读者可见范围内时，该分享才暴露它。可写的选择沿用分享自身的写入规则，因此**只在会话本身已允许写入、且源执行已 confine 的分享中生效，任何能力与选择都不会把只读分享变成可写**；两种选择都把这个 policy 已经判定的 action——`session/prompt`、`session/cancel`、`session/fork` 及其 role 列出的其余 action——留给档位自己的结论。所有者自己的页面以所有者访问基线打开，界面保持不变。
+
+Owner Gateway 按调用指明的 Session 与工作区判定每次调用，并拒绝目标缺失或无效的调用。查看页的会话列表和工作区成员裁剪为源会话及该查看者自己的分叉会话。页面从读者的访问快照读取每个会话自己的答案，因此切换选择不会把前一会话的权限带过去。未知或无法读取的模式默认拒绝。Owner 为源会话与分叉会话调用重新检查准入；撤权会取消受影响的调用和流，分享准入收窄时还会停止共享会话正在运行的轮次。页面区分认证、访问、过期、停止分享、所有者离线和传输失败，仅重试明确分类为可重试的失败。
+
+-----
+
+<a id="understand-the-implementation"></a>
+## 理解实现
+
+<details>
+<summary>实现内部机制 — 点击展开</summary>
+
+查看页就是 Owner 自己的 Web shell。Liveshare 服务端通过 `asset` 读取取得 Owner 渲染好的 index 文档，并把 [viewer-carrier.ts](../liveshare-protocol/src/viewer-carrier.ts) 生成的载体脚本放在文档最前面。Shell 资源、客户端插件 bundle，以及 index 相对文档基准引用的三个确切顶层文件（`manifest.webmanifest`、`favicon.svg`、`favicon-dark.svg`）都经同一读取取得，来自 Owner 的前端读取服务和客户端模块注册表，因此页面以 Owner 的版本运行 Owner 的全部插件。任何 asset 路径上的 source map 都被拒绝，且该判定是权威的：经 Liveshare 服务端转发的 `asset` 读取会原样到达这里，因此 Liveshare 服务端侧的同名规则只覆盖它自己的页面资源路由；被服务的文档还会去掉自己的 manifest 链接，否则浏览器会不带凭据地抓取它。载体把 Connection 调用和 Gateway 流转换为 `POST {base}/__share/rpc` 请求，并把 Liveshare 服务端无法作答的只读页面源 Owner 路由（`/open-in-app/apps` 与 `/api/present.host`）也经该通道转发，而不是留给 Liveshare 服务端尾部。Liveshare 服务端在不透明请求体之外提供已认证主体。Owner 读取处理器把每位读者的调用和流以「每个分享、每位读者一个 Peer」分派进自己的 Connection 与 Gateway，该 Peer 的 `share-viewer` principal 携带分享与服务端断言的身份。Gateway 依据本包注册的 `share-viewer` 策略，经 [`dsh-api-remote-access`](../../api/remote-access/README.zh.md) 判定该 Peer 的调用以及转发给它的会话通知：受服务的读者持有共享会话、其自己的 fork 及包含它们的工作区上的读取角色，持有条件按分享档位与其自身 fork 开关判定的 fork 与写入角色，此外别无授权；附件上传随读取角色生效。读取处理器保留分享生命周期拒绝、Liveshare 服务端授权刷新、冷会话准备和 fork 编排，在准备或分派提示词与停止之前读取策略的写入规则，并在授权结束、分享停止或过期、或复检拒绝时释放读者的 Peer。读者索取页面或打开流时也会开始准备该分享的源会话，因此宿主重启时该会话的 agent 尚未存活也能补上驱动所需的层；无法被 confine 的分享会如实说明该状态，而不再声明只读。存在载体写入的 `__DSH_LIVESHARE_VIEWER__` 全局变量时，本包的浏览器端挂载查看页界面，否则挂载分享操作。读者收到的 index 把读者自己的访问快照赋给每个 index 设为所有者基线的同一全局变量，页面随后跟随读者的 `remoteAccess/follow` 快照；CSS 隐藏不构成授权。
+
+Fork 请求绑定主体、分享、源会话、操作身份和已完成前缀。持久化预留记录与已记录的分叉会话使重试已记录的操作时重放同一分叉会话；owner 的 `SessionForkRequest` 自己生成分叉会话 id，因此在分叉会话已创建、但尚未记录时中断的请求会再次 fork。注册表变更为异步操作，仅在加锁的读取、修改与原子发布后完成；调用方必须等待预留、记录与撤销。冷态激活使用 Host 常规 Agent lookup，由串行 `agent/created` 在排队输入运行前安装限制，不使用 Remote `session/prepare` 端点。分叉会话作用域保留单个默认拒绝的 guard；重连替换其限制安装，释放旧安装不会移除继任。
+
+读者的提示词以 `user-rpc` 消息进入会话，其 `source.principal` 指明该读者；pre-step 在每条进入消息到达模型前，按 Relay 的准入重新检查其查看者。执行按轮次受限：只要有分享处于活跃状态，已准入输入中带有 share-viewer principal 的轮次就运行 Host 挂载的读取与检索面（`read`、`read_image`、`glob`、`grep`、`present`）受限替代、无本地文件副作用工具（`todo_write`、`skill`、`web_search`、`web_fetch`）的替代，以及（当某个分享允许写入时）有界 `edit` 与 `write`。其余所有工具对该轮次一律拒绝，且每次允许的调用声明的每个路径都会解析并按获授根目录检查。所有者自己发起的轮次保留会话原生工具，直到最后一个分享停止或过期。该轮次判定只存在于 Host 内存，按轮次重算，不写入会话日志。每次操作都会重新读取分享当前的 Relay 授权，并按获授根目录检查解析后的目标。读者的停止与提示词一样经 Gateway 分派：`share-viewer` 策略在分享档位确立且会话受沙箱限制时放行，随后由所有者自己的会话控制器停止该会话当前运行的轮次，包括所有者发起的轮次。读写保留正常写入观察策略。执行规则见 [LiveShare 子系统](../../../docs/subsystems/liveshare.zh.md)。
+
+| 职责 | 源码 |
+|---|---|
+| 登录、凭据存储及网关生命周期 | [share-host.ts](src/host/share-host.ts) |
+| 分享管理操作及其 `liveshareShares` Remote | [share-operations.ts](src/host/share-operations.ts), [share-remote.ts](src/host/share-remote.ts) |
+| 查看请求分派、读者 Peer 与访问策略 | [viewer-read.ts](src/host/viewer-read.ts)、[viewer-principal.ts](src/host/viewer-principal.ts)、[viewer-access-policy.ts](src/host/viewer-access-policy.ts)、[viewer-declarations.ts](src/host/viewer-declarations.ts)、[source-access.ts](src/host/source-access.ts) |
+| Fork 记录与运行时限制 | [fork-registry.ts](src/host/fork-registry.ts)、[fork-enforcement.ts](src/host/fork-enforcement.ts)、[shared-tools.ts](src/host/shared-tools.ts) |
+| 页面载体、查看页界面和页面资源读取 | [viewer-carrier.ts](../liveshare-protocol/src/viewer-carrier.ts)、[client/index.ts](src/client/index.ts)、[viewer-session-plugin.ts](src/client/viewer-session-plugin.ts)、[viewer-assets.ts](src/host/viewer-assets.ts) |
+| 共享身份和帧定义 | [协议包](../liveshare-protocol/README.zh.md) |
+| 注册与 socket 范围请求关联 | [registration-url.ts](src/owner-gateway/registration-url.ts)、[pending-rpc.ts](src/owner-gateway/pending-rpc.ts) |
+
+注册声明线路版本与可选能力。声明的版本不匹配时返回 HTTP 426；不做版本转换。IPC 请求使用绑定原始 socket 和 worker generation 的唯一 token；响应与取消匹配 token、分享 ID 和 Liveshare 服务端 ID。可关联的不支持请求会收到作用域内拒绝。
+
+可选 `share-access-state` 帧及鉴权请求列表响应提供完整、带版本的 Liveshare 服务端授权。Host 独立保留 Owner 选择的模式，执行时使用两者中较窄的模式。所有完整请求列表读取，包括管理读取，都应用同一版本与 generation 校验；缺失授权使准入失效。首次发现撤权的请求收到 `403 viewer-not-authorized`，其它已撤权工作被取消。`share-viewer` 策略及 `agent/pre-step` 将接收 Session 绑定到分享源会话或该主体记录的分叉会话。排队外部输入在重启后仍刷新授权；已删除分享不能授权恢复的 Inbox 输入。快照字段见 [共享协议参考](../liveshare-protocol/README.zh.md)。
+
+查看流属于打开它的主体。通知与控制投影只暴露源会话及该主体的分叉会话；交互审批与提问留在 Host。`forkLineage` 是 LiveShare 自有 UI 投影，不是授权。读者访问快照中的逐会话 grant 独立于展示谱系，决定页面是否提供提示词与停止。
+
+外部 Liveshare 服务端的服务、存储、OAuth 提供方和部署保持独立归属。仅涉及 Owner 的测试位于本包；启动两端完整产品的测试留在上层 Liveshare 服务端集成中。
+
+</details>
+
+-----
+
+<a id="further-exploration"></a>
+## 延伸阅读
+
+- [LiveShare 子系统](../../../docs/subsystems/liveshare.zh.md)
+- [Owner 决策记录](../../../.agents/notes/implemented/feature/2026-09-13-liveshare-protocol-and-owner-surfaces.zh.md)
+- [Web 组合包](../../bundle/web-app/README.zh.md)
+
+-----
+
+<a id="model-experience"></a>
+## 模型体验
+
+间接触达：host 把 viewer 的 prompt 驱动进共享会话，模型请求因而承载该 host 以会话普通用户输入转发的 viewer 内容。
+
+#### KV Cache 影响
+
+viewer 的 prompt 以普通用户输入进入共享会话，因此扩展的是与所有者自身输入相同的缓存 prompt 前缀；本组合包不增加任何请求字段、工具或系统提示文本。
+
+## 已知限制与后续工作
+
+<a id="known-limitations-and-deferred-work"></a>
+
+- Owner、查看页和 Liveshare 服务端需要匹配版本；尚未建立跨版本兼容保证。
+- 所有者无法拒绝已准入查看者的附件上传：能读取某条会话的查看者也可以向它附加文件，与档位和分叉开关无关。这是已接受的风险。
+- 查看者的文件操作按获授根目录做路径检查，若本地进程在检查与打开之间把获授范围内的目录换成符号链接，读写可能被改指别处；目录句柄锚定留待单独变更引入。查看者工具仅限受限的读取与检索面（`read`、`read_image`、`glob`、`grep`、`present`）、无本地文件副作用的工具（`todo_write`、`skill`、`web_search`、`web_fetch`），以及 write 档下的有界 `edit` 与 `write`；不授予 `bash`、`pwsh`、`cua`、`plugin_manager`、`schedule_*` 及该工具面未列出的任何工具。
+- 查看页没有独立工作区文件编辑界面，也没有管理权限。
+- 端点能力是临时机制且不经审查即被信任：注册表只校验名称形如 `<namespace>/<method>` 的 Remote 端点，因此被勾选的端点会在 policy 绑定的资源上被任意已认证分享读者调用，端点自身的 confine 是唯一限制。被勾选的可写端点在已允许写入的分享中具有破坏性。能力只覆盖 `global`、`session`、`workspace` 三种资源种类，`event:` 名称会被拒绝。
+- owner 在分享面板里为每份分享选一个开放档位——不可用 / 可读 / 可写——默认不可用，统一作用于所有声明了端点的插件；分享管理里能看到每份分享已开放的端点。档位在保存时展开成插件当时声明的端点，因此记录始终是显式端点列表，插件之后新增的端点不会自动开放，直到 owner 再次保存。当前能力填不满的档位不可选：没有任何插件声明可写端点时，「可写」按不可用呈现，而不是降级成可读。一次保存按顺序写这三项（档位、分叉开关、端点）；靠后的端点写入被拒时，前面的权限写入已经生效，界面报错并保留 owner 的选择以便重试。选择是分享级的：该分享的每位已准入查看者都可以在 policy 绑定的资源上调用被选中的端点，尚未建立逐查看者端点级别。插件不再声明的端点即使留在记录里也不暴露；不是整档的记录按不可用显示并说明重新保存会覆盖它。
+- 工作区不再包含读者可见的会话后，要到该工作区或工作区顺序下次变化时才离开读者的工作区订阅（[remote access 限制](../../api/remote-access/README.zh.md#known-limitations-and-deferred-work)）。
+- 注册表文件锁防止并发文件写入丢失持久条目，但每个注册表读取自身内存快照。多个 Host 之间不协调 Owner 分享状态更新与网关归属；每个 home 只使用一个活动 Owner Host。这不是多宿主授权服务。
+- 不发布运行时 invariant 配套模块：授权在操作本身检查，本包没有单独的 invariant 观察器。
+- Worker 重启会重新注册保留分享，但不重放查看流；查看者通过传输层恢复。注册被 401、403、410 或 426 拒绝时，该分享的重连就此停止，直到有别的操作把它重新注册：重新发布或改档位都会重新注册，为该 Liveshare 服务端存入凭据也会，它会把该地址下未在线的分享重新注册。恢复分享时出示的是本机为该分享所属 Liveshare 服务端保存的凭据，与本机自己对凭据过期的判断无关，因为 Liveshare 服务端会在背后为登录续期，凭据是否仍然授权只由 Liveshare 服务端决定；新建分享时仍按本机这一判断拒绝。
+- 访问档位授予 `view` 准入，有效 fork/write 权限来自分享模式。尚未建立逐查看者执行级别或立即跨实例停止／取消完成保证；取消不能撤回已提交写入。写入降为只读的快照会拒绝后续写入，但不承诺立即取消正在运行的分叉会话轮次。
+- 功能达到发布条件前，仍须完成最终装配快照验证。
+- 在查看页上，绕过 Connection 载体的客户端读取（交付物读取、open-in-app、PDF 资源、HMR 事件）到达的是 Liveshare 服务端而不是 Owner；index 文档中以根路径开头的 manifest 和图标链接在 Liveshare 服务端前缀下无法解析。
+
+<a id="dev-note"></a>
+### 开发备注
+
+<details>
+<summary>维护者工作上下文 — 点击展开</summary>
+
+无。
+
+</details>
diff --git a/packages/experimental/liveshare/cordis.patch.yml b/packages/experimental/liveshare/cordis.patch.yml
new file mode 100644
index 0000000000..c5b0725068
--- /dev/null
+++ b/packages/experimental/liveshare/cordis.patch.yml
@@ -0,0 +1,17 @@
+# Opt-in Liveshare owner bundle: mount the same-origin share APIs and their
+# browser Session-header action. Shipped profiles do not include this layer.
+- insert:
+    # The declaration surface loads first and needs nothing: the share host below waits for a Relay
+    # connection, so a surface it provided would appear after the plugins that offer endpoints did.
+    - id: liveshare-viewer-declarations
+      name: '@deepseek-ai/dsh-experimental-liveshare/viewer-declarations'
+    - id: liveshare-share-host
+      name: '@deepseek-ai/dsh-experimental-liveshare'
+      config:
+        ownerIdentityProvider: !!js process.env.LIVESHARE_OWNER_PROVIDER_ID
+        ownerIdentityTenant: !!js process.env.LIVESHARE_OWNER_TENANT_ID
+        ownerIdentitySubject: !!js process.env.LIVESHARE_OWNER_SUBJECT_ID
+        ownerIdentityDisplayName: !!js process.env.LIVESHARE_OWNER_DISPLAY_NAME
+        allowedSubjectIds: !!js (process.env.LIVESHARE_ALLOWED_SUBJECTS ?? '').split(',').map((value) => value.trim()).filter((value) => value !== '')
+        ownerStateFile: !!js process.env.LIVESHARE_OWNER_STATE_FILE
+        ownerCredentialFile: !!js process.env.LIVESHARE_OWNER_CREDENTIAL_FILE
diff --git a/packages/experimental/liveshare/icon.svg b/packages/experimental/liveshare/icon.svg
new file mode 100644
index 0000000000..a4a722a102
--- /dev/null
+++ b/packages/experimental/liveshare/icon.svg
@@ -0,0 +1,12 @@
+<svg width="36" height="36" viewBox="0 0 36 36" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <rect x="5.5" y="8.5" width="25" height="17" rx="2.6" fill="url(#a)" fill-opacity="0.85" />
+  <path d="M9.5 22.5V12.5H17.5V22.5H9.5Z" fill="#FFFFFF" fill-opacity="0.9" />
+  <path d="M21 15.2L25.5 12.6V23.4L21 20.8V15.2Z" fill="#45D9E7" />
+  <circle cx="28.5" cy="9.5" r="3.2" fill="#45D9E7" />
+  <defs>
+    <linearGradient id="a" x1="18" y1="8.5" x2="18" y2="25.5" gradientUnits="userSpaceOnUse">
+      <stop stop-color="#7CB7FF" />
+      <stop offset="1" stop-color="#145AF3" />
+    </linearGradient>
+  </defs>
+</svg>
diff --git a/packages/experimental/liveshare/locale/de.json b/packages/experimental/liveshare/locale/de.json
new file mode 100644
index 0000000000..5e02ebfaf7
--- /dev/null
+++ b/packages/experimental/liveshare/locale/de.json
@@ -0,0 +1,6 @@
+{
+  "meta": {
+    "title": "LiveShare-Sitzungsfreigabe",
+    "description": "Teilt die aktuelle Sitzung mit einer Kollegin oder einem Kollegen, die oder der sie im Browser bedienen, bei erlaubten Schreibzugriffen Dateien im freigegebenen Arbeitsbereich bearbeiten oder aus der abgeschlossenen Historie eine eigene Sitzung abzweigen kann."
+  }
+}
diff --git a/packages/experimental/liveshare/locale/en.json b/packages/experimental/liveshare/locale/en.json
new file mode 100644
index 0000000000..676292da24
--- /dev/null
+++ b/packages/experimental/liveshare/locale/en.json
@@ -0,0 +1,6 @@
+{
+  "meta": {
+    "title": "LiveShare Session Sharing",
+    "description": "Share the current Session with a colleague, who can drive it in a browser, edit files inside the granted workspace when the share allows writes, or branch their own Session from the completed history."
+  }
+}
diff --git a/packages/experimental/liveshare/locale/es.json b/packages/experimental/liveshare/locale/es.json
new file mode 100644
index 0000000000..10da39260b
--- /dev/null
+++ b/packages/experimental/liveshare/locale/es.json
@@ -0,0 +1,6 @@
+{
+  "meta": {
+    "title": "Compartir sesión de LiveShare",
+    "description": "Comparte la sesión actual con un compañero, que puede dirigirla en un navegador, editar archivos dentro del espacio de trabajo concedido cuando el recurso compartido permite escritura, o crear su propia sesión a partir del historial completado."
+  }
+}
diff --git a/packages/experimental/liveshare/locale/fr.json b/packages/experimental/liveshare/locale/fr.json
new file mode 100644
index 0000000000..cb76a45b45
--- /dev/null
+++ b/packages/experimental/liveshare/locale/fr.json
@@ -0,0 +1,6 @@
+{
+  "meta": {
+    "title": "Partage de session LiveShare",
+    "description": "Partagez la session en cours avec un collègue, qui peut la piloter dans un navigateur, modifier des fichiers dans l'espace de travail accordé lorsque le partage autorise l'écriture, ou créer sa propre session à partir de l'historique terminé."
+  }
+}
diff --git a/packages/experimental/liveshare/locale/ja.json b/packages/experimental/liveshare/locale/ja.json
new file mode 100644
index 0000000000..9f1c2ec69c
--- /dev/null
+++ b/packages/experimental/liveshare/locale/ja.json
@@ -0,0 +1,6 @@
+{
+  "meta": {
+    "title": "LiveShare セッション共有",
+    "description": "現在のセッションを同僚と共有し、ブラウザから操作してもらう、共有が書き込みを許可する場合は付与されたワークスペース内のファイルを編集してもらう、または完了した履歴から自分のセッションを分岐してもらえます。"
+  }
+}
diff --git a/packages/experimental/liveshare/locale/pt.json b/packages/experimental/liveshare/locale/pt.json
new file mode 100644
index 0000000000..46c9932a4b
--- /dev/null
+++ b/packages/experimental/liveshare/locale/pt.json
@@ -0,0 +1,6 @@
+{
+  "meta": {
+    "title": "Compartilhamento de sessão do LiveShare",
+    "description": "Compartilhe a sessão atual com um colega, que pode conduzi-la no navegador, editar arquivos dentro do espaço de trabalho concedido quando o compartilhamento permite escrita, ou ramificar a própria sessão a partir do histórico concluído."
+  }
+}
diff --git a/packages/experimental/liveshare/locale/ru.json b/packages/experimental/liveshare/locale/ru.json
new file mode 100644
index 0000000000..d704cdcd5e
--- /dev/null
+++ b/packages/experimental/liveshare/locale/ru.json
@@ -0,0 +1,6 @@
+{
+  "meta": {
+    "title": "Совместный доступ к сеансу LiveShare",
+    "description": "Поделитесь текущим сеансом с коллегой: он сможет управлять им в браузере, редактировать файлы в предоставленном рабочем пространстве, если общий доступ разрешает запись, или ответвить собственный сеанс из завершённой истории."
+  }
+}
diff --git a/packages/experimental/liveshare/locale/zh.json b/packages/experimental/liveshare/locale/zh.json
new file mode 100644
index 0000000000..78f05fe568
--- /dev/null
+++ b/packages/experimental/liveshare/locale/zh.json
@@ -0,0 +1,6 @@
+{
+  "meta": {
+    "title": "LiveShare 会话分享",
+    "description": "把当前会话分享给同事，对方可在浏览器中驱动该会话、在分享允许写入时修改授权工作区内的文件，或从已完成历史分支出自己的会话。"
+  }
+}
diff --git a/packages/experimental/liveshare/package.json b/packages/experimental/liveshare/package.json
new file mode 100644
index 0000000000..941c4c62ed
--- /dev/null
+++ b/packages/experimental/liveshare/package.json
@@ -0,0 +1,172 @@
+{
+  "name": "@deepseek-ai/dsh-experimental-liveshare",
+  "description": "Opt-in LiveShare host bundle: share a Session through a separate Relay at the view or bounded-write tier, with forking and attachment uploads as independent switches",
+  "version": "0.2.2-alpha.2",
+  "icon": "./icon.svg",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/experimental/liveshare"
+  },
+  "type": "module",
+  "main": "lib/index.js",
+  "types": "lib/types/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/types/index.d.ts",
+      "default": "./lib/index.js"
+    },
+    "./client": {
+      "types": "./lib/types/client/index.d.ts",
+      "default": "./lib/client.js"
+    },
+    "./viewer-declarations": {
+      "types": "./lib/types/viewer-declarations.d.ts",
+      "default": "./lib/viewer-declarations.js"
+    },
+    "./typert": {
+      "types": "./lib/typert.host.d.ts",
+      "default": "./lib/typert.host.js"
+    },
+    "./remote": {
+      "types": "./lib/typert.remote-client.d.ts",
+      "default": "./lib/typert.remote-client.js"
+    },
+    "./types": {
+      "types": "./lib/types/share-api-types.d.ts"
+    },
+    "./cordis.patch.yml": "./cordis.patch.yml",
+    "./locale/*.json": "./locale/*.json",
+    "./src/*": "./src/*",
+    "./package.json": "./package.json"
+  },
+  "files": [
+    "icon.svg",
+    "locale/*.json",
+    "lib/index.js",
+    "lib/client.js",
+    "cordis.patch.yml",
+    "lib/owner-gateway/cli.js",
+    "lib/retry-backoff-*.js",
+    "lib/viewer-declarations.js",
+    "lib/viewer-declarations-*.js",
+    "lib/types/**/*.d.ts",
+    "lib/typert.host.js",
+    "lib/typert.host.d.ts",
+    "lib/typert.remote-client.js",
+    "lib/typert.remote-client.d.ts"
+  ],
+  "scripts": {
+    "bundle": "tsdown",
+    "watch": "tsdown --watch"
+  },
+  "license": "MIT",
+  "dependencies": {
+    "@deepseek-ai/dsh-atomic-write": "workspace:*",
+    "@deepseek-ai/dsh-brand": "workspace:*",
+    "@deepseek-ai/dsh-experimental-liveshare-protocol": "workspace:*",
+    "@deepseek-ai/dsh-session": "workspace:*",
+    "@deepseek-ai/dsh-typert-protocol": "workspace:*",
+    "@deepseek-ai/dsh-util-values": "workspace:*",
+    "ws": "^8.18.3",
+    "zod": "4.4.3"
+  },
+  "peerDependencies": {
+    "@deepseek-ai/cordis": "workspace:~",
+    "@deepseek-ai/dsh-scope": "workspace:*"
+  },
+  "devDependencies": {
+    "@deepseek-ai/cordis": "workspace:~",
+    "@deepseek-ai/cordis-plugin-loader": "workspace:~",
+    "@deepseek-ai/dsh-agent": "workspace:*",
+    "@deepseek-ai/dsh-agent-loop-testkit": "workspace:*",
+    "@deepseek-ai/dsh-api-gateway": "workspace:*",
+    "@deepseek-ai/dsh-api-remote-access": "workspace:*",
+    "@deepseek-ai/dsh-api-remotes": "workspace:*",
+    "@deepseek-ai/dsh-api-session-controller": "workspace:*",
+    "@deepseek-ai/dsh-api-settings-controller": "workspace:*",
+    "@deepseek-ai/dsh-api-workspace-controller": "workspace:*",
+    "@deepseek-ai/dsh-api-workspace-files": "workspace:*",
+    "@deepseek-ai/dsh-client-connection": "workspace:*",
+    "@deepseek-ai/dsh-client-file-upload": "workspace:*",
+    "@deepseek-ai/dsh-client-locale": "workspace:*",
+    "@deepseek-ai/dsh-client-modules": "workspace:*",
+    "@deepseek-ai/dsh-client-resources": "workspace:*",
+    "@deepseek-ai/dsh-client-shortcuts": "workspace:*",
+    "@deepseek-ai/dsh-client-store": "workspace:*",
+    "@deepseek-ai/dsh-client-test-runtime": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-agent-preset": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-approval": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-attachment": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-brand-official": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-chat": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-commands": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-conversation": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-deliverables": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-input-trigger": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-jobs": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-layout": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-plan": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-primitives": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-reference": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-renderer": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-session": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-settings": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-sidebar": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-sidebar-right": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-subagent": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-theme": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-tool": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-trajectory": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-user-questions": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-workflow-run": "workspace:*",
+    "@deepseek-ai/dsh-client-ui-workspace": "workspace:*",
+    "@deepseek-ai/dsh-client-web": "workspace:*",
+    "@deepseek-ai/dsh-cua": "workspace:*",
+    "@deepseek-ai/dsh-experimental-api-speech-to-text": "workspace:*",
+    "@deepseek-ai/dsh-experimental-claude-code-mods": "workspace:*",
+    "@deepseek-ai/dsh-experimental-client-ui-cot-translation": "workspace:*",
+    "@deepseek-ai/dsh-fs": "workspace:*",
+    "@deepseek-ai/dsh-fs-local": "workspace:*",
+    "@deepseek-ai/dsh-fs-observation-policy": "workspace:*",
+    "@deepseek-ai/dsh-fs-sandbox": "workspace:*",
+    "@deepseek-ai/dsh-host-webserver": "workspace:*",
+    "@deepseek-ai/dsh-llm": "workspace:*",
+    "@deepseek-ai/dsh-sandbox": "workspace:*",
+    "@deepseek-ai/dsh-sandbox-policy": "workspace:*",
+    "@deepseek-ai/dsh-scope": "workspace:*",
+    "@deepseek-ai/dsh-session-projection": "workspace:*",
+    "@deepseek-ai/dsh-settings": "workspace:*",
+    "@deepseek-ai/dsh-tool-executor-native": "workspace:*",
+    "@deepseek-ai/dsh-tool-fs": "workspace:*",
+    "@deepseek-ai/dsh-tools": "workspace:*",
+    "@deepseek-ai/dsh-typert-registry": "workspace:*",
+    "@deepseek-ai/dsh-workspace": "workspace:*",
+    "@types/ws": "^8.18.1",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0"
+  },
+  "dsh": {
+    "bundle": {
+      "patch": "./cordis.patch.yml",
+      "listedByDefault": false
+    },
+    "client": {
+      "inject": [
+        "@deepseek-ai/dsh-api-remote-access",
+        "@deepseek-ai/dsh-api-remotes",
+        "@deepseek-ai/dsh-client-locale",
+        "@deepseek-ai/dsh-client-ui-conversation",
+        "@deepseek-ai/dsh-client-ui-primitives",
+        "@deepseek-ai/dsh-client-ui-renderer",
+        "@deepseek-ai/dsh-client-ui-session"
+      ],
+      "platform": "web"
+    }
+  },
+  "publishConfig": {
+    "access": "public"
+  }
+}
diff --git a/packages/experimental/liveshare/src/client/ManageSharesDialog.tsx b/packages/experimental/liveshare/src/client/ManageSharesDialog.tsx
new file mode 100644
index 0000000000..6f154ff818
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/ManageSharesDialog.tsx
@@ -0,0 +1,131 @@
+/** Global owner-side list of shares; each row opens that Session's share dialog. */
+
+import { useEffect, useState, type ReactNode } from 'react'
+import { Button, Modal, RiskConfirmation } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { NS } from './locales.ts'
+import type { OwnerShares } from './owner-shares.ts'
+import type { OutgoingShare } from './share-types.ts'
+import css from './ShareDialog.module.css'
+
+/** Props for the global Liveshare share manager. */
+export interface LiveshareManageSharesDialogProps extends PropsLocale<typeof NS> {
+  /** Owner share management, addressed through the generated `liveshareShares` namespace. */
+  readonly shares: OwnerShares
+  /** Open the share dialog for one Session. */
+  readonly onOpenShare?: (sessionId: string, sessionTitle: string) => void
+  /** Close the manager. */
+  readonly onClose: () => void
+}
+
+/**
+ * List every share and open the one whose Session the owner wants to manage.
+ * @param props - Owner shares, navigation callback, close callback, and copy.
+ * @returns The manager modal.
+ */
+export function LiveshareManageSharesDialog({ shares, onOpenShare, onClose, t }: LiveshareManageSharesDialogProps): ReactNode {
+  const [shareList, setShareList] = useState<readonly OutgoingShare[]>([])
+  const [loaded, setLoaded] = useState(false)
+  const [error, setError] = useState('')
+  /** The share whose stop the owner is confirming; undefined while no confirmation is open. */
+  const [stopTarget, setStopTarget] = useState<OutgoingShare>()
+  const [stopAcknowledged, setStopAcknowledged] = useState(false)
+  const [stopping, setStopping] = useState(false)
+
+  useEffect(() => {
+    let cancelled = false
+    void shares.list()
+      .then((listed) => {
+        if (cancelled) return
+        if (!listed.ok) throw new Error('shares unavailable')
+        setShareList(listed.value.shares)
+        setLoaded(true)
+      })
+      .catch(() => {
+        if (!cancelled) setError(t('manage.unavailable'))
+      })
+    return () => { cancelled = true }
+  }, [shares, t])
+
+  const stopShare = async (): Promise<void> => {
+    const target = stopTarget
+    /* v8 ignore next -- the confirmation is only rendered while a share is selected */
+    if (target === undefined) return
+    setStopping(true)
+    setError('')
+    try {
+      const stopped = await shares.stop({ shareId: target.shareId })
+      if (!stopped.ok) throw new Error('stop refused')
+      setShareList(current => current.filter(share => share.shareId !== target.shareId))
+      setStopTarget(undefined)
+      setStopAcknowledged(false)
+    } catch {
+      setError(t('dialog.stopFailed'))
+    } finally {
+      setStopping(false)
+    }
+  }
+
+  return (
+    <Modal
+      open
+      onClose={onClose}
+      title={t('manage.title')}
+      closeLabel={t('manage.done')}
+      className={css.modal as string}
+      footer={<Button variant="primary" onClick={onClose}>{t('manage.done')}</Button>}
+    >
+      <div className={css.form}>
+        <p className={css.description}>{t('manage.description')}</p>
+        {!loaded && error === '' ? <p className={css.noRequests}>{t('manage.loading')}</p> : null}
+        {loaded && shareList.length === 0 ? <p className={css.noRequests}>{t('manage.empty')}</p> : null}
+        {shareList.length === 0 ? null : (
+          <ul className={css.outgoingList}>
+            {shareList.map(share => (
+              <li key={share.shareId} className={css.outgoingItem}>
+                <div className={css.managerRow}>
+                  <strong title={share.sessionTitle}>{share.sessionTitle}</strong>
+                  <span className={share.online ? css.online : css.offline}>
+                    {t(share.online ? 'dialog.share.online' : 'dialog.share.offline')}
+                  </span>
+                  <div className={css.managerActions}>
+                    <Button
+                      variant="outline"
+                      size="sm"
+                      disabled={onOpenShare === undefined}
+                      onClick={() => { onOpenShare?.(share.sessionId, share.sessionTitle) }}
+                    >
+                      {t('manage.open')}
+                    </Button>
+                    <Button
+                      variant="ghost"
+                      size="sm"
+                      onClick={() => { setStopTarget(share); setStopAcknowledged(false) }}
+                    >
+                      {t('manage.cancelShare')}
+                    </Button>
+                  </div>
+                </div>
+              </li>
+            ))}
+          </ul>
+        )}
+        {error === '' ? null : <div className={css.error} role="alert">{error}</div>}
+      </div>
+      <RiskConfirmation
+        open={stopTarget !== undefined}
+        title={t('manage.stop.title')}
+        description={t('manage.stop.description')}
+        acknowledgeLabel={t('manage.stop.acknowledge')}
+        cancelLabel={t('dialog.cancel')}
+        closeLabel={t('manage.done')}
+        confirmLabel={t('dialog.stop')}
+        acknowledged={stopAcknowledged}
+        disabled={stopping}
+        onAcknowledgedChange={setStopAcknowledged}
+        onCancel={() => { setStopAcknowledged(false); setStopTarget(undefined) }}
+        onConfirm={() => { void stopShare() }}
+      />
+    </Modal>
+  )
+}
diff --git a/packages/experimental/liveshare/src/client/README.i18n.yaml b/packages/experimental/liveshare/src/client/README.i18n.yaml
new file mode 100644
index 0000000000..2590faa3af
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/README.i18n.yaml
@@ -0,0 +1,7 @@
+# Bilingual-pair consistency record for README.md (docs/i18n/README.md): per heading
+# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
+# After editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/experimental/liveshare/src/client/README.md
+/liveshare-viewer-access:
+  en: bac4236a46a3443a
+  zh: 98e7ce6f5d96abf5
diff --git a/packages/experimental/liveshare/src/client/README.md b/packages/experimental/liveshare/src/client/README.md
new file mode 100644
index 0000000000..a7bb9fa9b3
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/README.md
@@ -0,0 +1,11 @@
+# Liveshare viewer access
+
+English | [中文](README.zh.md)
+
+The viewer page offers only the writes the calling Peer's access snapshot (`remoteAccess/follow`) includes; the owner's Gateway answers that snapshot through the Liveshare share-viewer policy. Each surface reads its own access Hook. The composer hides Send and Stop while a Session's snapshot excludes `session/prompt` and `session/cancel`. The Turn Tail branch action and the shared Session menu's branch action appear only while it includes `session/fork`. Session and Workspace management entries hide themselves for every endpoint it excludes. File intake follows `fileUploads/upload`, which a share grants on every Session the reader can see; neither the tier nor the fork switch decides it. The Host enforces every call regardless.
+
+The share's own answer (`/__liveshare/context`) states the page's mode and reason. While the snapshot excludes prompting a Session this page presents, created, or switched to, that Session's composer carries a block with the page's reason: an unconfirmed share, a stopped, expired, or withdrawn share, the read-only mode on a branch, or the generic read-only note. The snapshot carries no per-Session refusal code, so a Session's own refusal reason is not stated. `forkLineage` describes a row; it does not authorize prompting or stopping.
+
+The served index carries the reader's opening access snapshot, so the page offers only what this reader may call from its first render. After the snapshot stream fails, every access answer is false and the page offers no write affordance; the Host refuses every call regardless. A Connection that lost its carrier states the page as offline until a generation reconnects.
+
+A durable `user/message` source that carries a `share-viewer` principal renders the reader's Relay-asserted subject above Chat's official user bubble through the `liveshare` dictionary's `inputOrigin.sharedSession` copy. The client registers one entry in Chat's `conversation.chat.user.before` chain seat on both faces; its selector elects only a `user` row whose durable source carries a valid `share-viewer` principal, so owner-authored, malformed, and steering rows keep the official row untouched. The line ellipsizes a long subject instead of widening the bubble.
diff --git a/packages/experimental/liveshare/src/client/README.zh.md b/packages/experimental/liveshare/src/client/README.zh.md
new file mode 100644
index 0000000000..e00bd4a12e
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/README.zh.md
@@ -0,0 +1,11 @@
+# Liveshare viewer 访问
+
+[English](README.md) | 中文
+
+viewer 页面只提供调用方 Peer 访问快照（`remoteAccess/follow`）包含的写操作；该快照由 owner 的 Gateway 经 Liveshare share-viewer policy 回答。各界面读取各自的访问钩子。Session 的快照不含 `session/prompt` 与 `session/cancel` 时，composer 隐藏发送与停止。轮次末尾的分支操作与 共享 Session 菜单的分支操作只在快照含 `session/fork` 时出现。会话与工作区管理条目对快照不含的端点自行隐藏。附件接收跟随 `fileUploads/upload`；分享向读者提供的每条会话都会授予它，档位与分叉开关都不决定它。Host 仍对每次调用强制鉴权。
+
+分享自身的回答（`/__liveshare/context`）给出页面的 mode 与原因。快照不允许向本页展示、创建或切换到的 Session 发送提示时，该 Session 的 composer 带一个 block，说明页面级原因：无法确认的分享，已停止、过期或被撤销的分享，分支上的只读 mode，或通用只读说明。快照不带每个 Session 的拒绝码，因此不说明某个 Session 自己的拒绝原因。`forkLineage` 描述该行，不授权发送提示或停止。
+
+下发的 index 携带读者自己的起始访问快照，因此页面从首次渲染起只提供该读者可调用的入口。快照流失败之后，所有访问答案均为 false，页面不提供任何写入入口；Host 无论如何都会拒绝每个调用。Connection 失去载体时，页面显示离线，直到重新连上一个 generation。
+
+持久化的 `user/message` source 带 `share-viewer` principal 时，会在 Chat 官方 user 气泡上方显示读者由 Relay 断言的主体，文案来自 `liveshare` 字典的 `inputOrigin.sharedSession`。客户端在两种页面上都向 Chat 的 `conversation.chat.user.before` chain seat 注册一个条目；条目的 selector 只选中 source 带合法 `share-viewer` principal 的 `user` 行，owner 发起、结构非法与 steering 行都保持官方行未改动。主体过长时标签省略，不撑宽气泡。
diff --git a/packages/experimental/liveshare/src/client/ShareAction.module.css b/packages/experimental/liveshare/src/client/ShareAction.module.css
new file mode 100644
index 0000000000..b15d7c3da2
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/ShareAction.module.css
@@ -0,0 +1,21 @@
+.trigger {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  height: 24px;
+  padding: 0 8px;
+  border: 0.5px solid var(--dsw-alias-border-l2);
+  border-radius: 999px;
+  corner-shape: round;
+  background: var(--dsw-alias-bg-layer-1);
+  color: var(--dsw-alias-label-primary);
+  font: inherit;
+  font-size: 12px;
+  cursor: pointer;
+}
+
+@media (hover: hover) {
+  .trigger:hover {
+    background: var(--dsw-alias-bg-layer-2);
+  }
+}
diff --git a/packages/experimental/liveshare/src/client/ShareAction.tsx b/packages/experimental/liveshare/src/client/ShareAction.tsx
new file mode 100644
index 0000000000..5f81851896
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/ShareAction.tsx
@@ -0,0 +1,94 @@
+/** Session-header action that opens the Liveshare owner-side share dialog. */
+
+import { useEffect, useState, type ReactNode } from 'react'
+import { IconShareOutlineRegular } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { InjectFace, PropsLocale, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
+import type {} from '@deepseek-ai/dsh-client-ui-session/client'
+import { LiveshareManageSharesDialog } from './ManageSharesDialog.tsx'
+import { openManagedSession, rememberManagedShare, takeManagedShare } from './share-navigation.ts'
+import { LiveshareShareDialog } from './ShareDialog.tsx'
+import type { NS } from './locales.ts'
+import type { OwnerShares } from './owner-shares.ts'
+import css from './ShareAction.module.css'
+
+/** Business face the header action receives: the owner's share-management Remote. */
+export interface LiveshareShareActionInjected {
+  /** Owner share management, addressed through the generated `liveshareShares` namespace. */
+  readonly shares: OwnerShares
+}
+
+/** Full props for the Liveshare Session-header utility. */
+export type LiveshareShareActionProps =
+  PropsRuntime<'conversation.session.header.utilities'> & InjectFace<LiveshareShareActionInjected> & PropsLocale<typeof NS>
+
+/**
+ * Render the Session Header Share action and its dialog for a local owner.
+ * @param props - Session runtime plus localized copy.
+ * @returns the header action and optional dialog.
+ */
+export function LiveshareShareAction({ sessionId, useSessions, shares, t }: LiveshareShareActionProps): ReactNode {
+  const [view, setView] = useState<'closed' | 'share' | 'manage'>('closed')
+  const [managedShare, setManagedShare] = useState<{ readonly sessionId: SessionId; readonly sessionTitle: string }>()
+  const [defaultRelay, setDefaultRelay] = useState('')
+  const sessionTitle = useSessions(state => state.byId[sessionId]?.displayTitle) ?? sessionId
+
+  useEffect(() => {
+    if (takeManagedShare(sessionId)) setView('share')
+  }, [sessionId])
+
+  useEffect(() => {
+    if (view === 'closed' || defaultRelay !== '') return
+    let cancelled = false
+    void shares.relay()
+      .then((result) => {
+        if (cancelled || !result.ok) return
+        // No saved address is a valid answer: the dialog opens with an empty field that says so.
+        setDefaultRelay(result.value.effective ?? '')
+      })
+      .catch(() => { /* Dialog accepts a typed relay when the host read fails. */ })
+    return () => { cancelled = true }
+  }, [defaultRelay, view, shares])
+
+  return (
+    <>
+      <button
+        type="button"
+        className={css.trigger}
+        aria-label={t('header.action')}
+        onClick={() => { setManagedShare(undefined); setView('share') }}
+      >
+        <span>{t('header.action')}</span>
+        <IconShareOutlineRegular size={12} />
+      </button>
+      {view === 'share' && (
+        <LiveshareShareDialog
+          sessionId={managedShare?.sessionId ?? sessionId}
+          sessionTitle={managedShare?.sessionTitle ?? sessionTitle}
+          defaultRelay={defaultRelay}
+          shares={shares}
+          onManage={() => { setView('manage') }}
+          onClose={() => { setManagedShare(undefined); setView('closed') }}
+          t={t}
+        />
+      )}
+      {view === 'manage' && (
+        <LiveshareManageSharesDialog
+          shares={shares}
+          onOpenShare={(target, title) => {
+            const selected = { sessionId: target as SessionId, sessionTitle: title }
+            if (target !== sessionId) {
+              rememberManagedShare(target)
+              openManagedSession(target)
+            }
+            setManagedShare(selected)
+            setView('share')
+          }}
+          onClose={() => { setView('closed') }}
+          t={t}
+        />
+      )}
+    </>
+  )
+}
diff --git a/packages/experimental/liveshare/src/client/ShareCapabilitiesPicker.tsx b/packages/experimental/liveshare/src/client/ShareCapabilitiesPicker.tsx
new file mode 100644
index 0000000000..2955cf44af
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/ShareCapabilitiesPicker.tsx
@@ -0,0 +1,184 @@
+/**
+ * The share dialog's plugin-endpoint tier control and the helpers that read a stored selection back
+ * as one tier.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/ShareCapabilitiesPicker
+ */
+
+import type { ReactNode } from 'react'
+import { SegmentedControl, type SegmentedControlOption } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { NS } from './locales.ts'
+import type { ViewerCapabilityGroup } from './share-types.ts'
+import css from './ShareDialog.module.css'
+
+/** One share-wide exposure tier the owner picks for every plugin that declares endpoints. */
+export type CapabilityTier = 'none' | 'read' | 'write'
+
+/**
+ * The endpoints one tier exposes, expanded from what the plugins declare now.
+ *
+ * `read` carries every readable endpoint and no writable one; `write` carries both kinds, because it
+ * is the wider tier rather than writable endpoints alone. A plugin with nothing to expose under the
+ * tier is left out, exactly as a group that names no endpoint. Expansion at save time is what keeps a
+ * record an explicit endpoint list: an endpoint a plugin declares later is not in this expansion, so
+ * it stays closed until the owner saves again.
+ * @param offered - Endpoints the host currently offers.
+ * @param tier - Tier to expand.
+ * @returns The `capabilities` array the owner API validates against the same offers.
+ */
+export function tierSelection(
+  offered: readonly ViewerCapabilityGroup[],
+  tier: CapabilityTier,
+): readonly ViewerCapabilityGroup[] {
+  return offered.flatMap((group): readonly ViewerCapabilityGroup[] => {
+    const readable = tier === 'none' ? [] : [...group.readable]
+    const writable = tier === 'write' ? [...group.writable] : []
+    return readable.length === 0 && writable.length === 0
+      ? []
+      : [{ plugin: group.plugin, readable, writable }]
+  })
+}
+
+/**
+ * The endpoints one group list names, as comparable keys.
+ *
+ * The plugin and the kind are part of each key because the same name may be offered as readable by one
+ * plugin and writable by another.
+ * @param groups - Groups read from a share record.
+ * @returns One key per named endpoint, sorted.
+ */
+export function selectionKeys(groups: readonly ViewerCapabilityGroup[]): readonly string[] {
+  const keys: string[] = []
+  for (const group of groups) {
+    for (const endpoint of group.readable) keys.push(`${group.plugin}\u0000readable\u0000${endpoint}`)
+    for (const endpoint of group.writable) keys.push(`${group.plugin}\u0000writable\u0000${endpoint}`)
+  }
+  return keys.sort()
+}
+
+/**
+ * Whether two key lists name exactly the same endpoints.
+ * @param left - One sorted key list.
+ * @param right - The other sorted key list.
+ * @returns True when both name the same endpoints once each.
+ */
+export function sameKeys(left: readonly string[], right: readonly string[]): boolean {
+  return left.length === right.length && left.every((key, index) => key === right[index])
+}
+
+/**
+ * The tier one share's stored selection is, and whether it is a whole tier at all.
+ *
+ * A record that matches no tier is not shown as one: the control holds the default and the panel
+ * states that saving replaces the record, because the record names a subset no tier represents — a
+ * selection made before every endpoint was offered again, or one this page cannot attribute.
+ * @param offered - Endpoints the host currently offers.
+ * @param stored - Selection the host reported for this share.
+ * @returns The matching tier, or the default with `stale` when the record matches none.
+ */
+export function readStoredTier(
+  offered: readonly ViewerCapabilityGroup[],
+  stored: readonly ViewerCapabilityGroup[],
+): { readonly tier: CapabilityTier; readonly stale: boolean } {
+  const keys = selectionKeys(stored)
+  // An empty record is exactly the default tier, and it is the only reading when the record names
+  // nothing: comparing it to an empty expansion would otherwise match the read tier too.
+  if (keys.length === 0) return { tier: 'none', stale: false }
+  // The write tier is compared only where a plugin declares a writable endpoint: without one the two
+  // tiers expand to the same endpoints, and such a record is the read tier rather than the wider one.
+  if (offered.some(group => group.writable.length > 0)
+    && sameKeys(keys, selectionKeys(tierSelection(offered, 'write')))) {
+    return { tier: 'write', stale: false }
+  }
+  if (sameKeys(keys, selectionKeys(tierSelection(offered, 'read')))) return { tier: 'read', stale: false }
+  return { tier: 'none', stale: true }
+}
+
+/** Props for the endpoint tier control. */
+export interface ShareCapabilitiesPickerProps extends PropsLocale<typeof NS> {
+  /** Endpoints the mounted plugins currently offer; an empty list renders nothing. */
+  readonly offered: readonly ViewerCapabilityGroup[]
+  /** Tier the control acts on. */
+  readonly tier: CapabilityTier
+  /** Whether the stored record matches no tier, so saving replaces it. */
+  readonly stale: boolean
+  /** Whether the share's save is in flight. */
+  readonly disabled: boolean
+  /** Base id the control's own tab and panel ids derive from. */
+  readonly controlId: string
+  /** Record the owner's tier pick. */
+  readonly onPick: (tier: CapabilityTier) => void
+}
+
+/**
+ * Render the endpoint tier control, its caveats, and what the current tier exposes.
+ * @param props - The live offers, the tier in force, and localized copy.
+ * @returns The control, or nothing when no plugin offers an endpoint.
+ */
+export function ShareCapabilitiesPicker({
+  offered, tier, stale, disabled, controlId, onPick, t,
+}: ShareCapabilitiesPickerProps): ReactNode {
+  if (offered.length === 0) return null
+  /** Whether any offered plugin declares a readable endpoint, which is what the read tier exposes. */
+  const readableOffered = offered.some(group => group.readable.length > 0)
+  /** Whether any offered plugin declares a writable endpoint, which is what the write tier adds. */
+  const writableOffered = offered.some(group => group.writable.length > 0)
+  /** Every readable endpoint the offer carries, which is what the read tier writes into the record. */
+  const readableOfferedCount = offered.reduce((count, group) => count + group.readable.length, 0)
+  /** Every writable endpoint the offer carries, which is what the write tier adds to the record. */
+  const writableOfferedCount = offered.reduce((count, group) => count + group.writable.length, 0)
+  /** The three tiers, with the ones the live offer cannot fill stated as unavailable. */
+  const tierOptions: readonly SegmentedControlOption<CapabilityTier>[] = [
+    { value: 'none', label: t('dialog.capabilities.tier.none') },
+    {
+      value: 'read',
+      label: t('dialog.capabilities.tier.read'),
+      ...(readableOffered ? {} : { disabled: true, title: t('dialog.capabilities.noReadable') }),
+    },
+    {
+      value: 'write',
+      label: t('dialog.capabilities.tier.write'),
+      ...(writableOffered ? {} : { disabled: true, title: t('dialog.capabilities.noWritable') }),
+    },
+  ]
+
+  /**
+   * The one line stating what this share exposes right now.
+   * @returns The localized summary of the current exposure.
+   */
+  const capabilitySummary = (): string => {
+    if (stale) return t('dialog.capabilities.stale')
+    if (tier === 'read') return t('dialog.capabilities.summary.read', { count: readableOfferedCount })
+    if (tier === 'write') {
+      return t('dialog.capabilities.summary.write', {
+        readable: readableOfferedCount,
+        writable: writableOfferedCount,
+      })
+    }
+    return t('dialog.capabilities.none')
+  }
+
+  return (
+    <>
+      <p className={css.hint}>{t('dialog.capabilities.description')}</p>
+      <SegmentedControl
+        id={controlId}
+        label={t('dialog.capabilities')}
+        value={tier}
+        disabled={disabled}
+        options={tierOptions}
+        onChange={(next) => { onPick(next) }}
+      />
+      {/* A writable endpoint is destructive and the share mode is the owner's consent for
+        writes, so the caveat sits beside the tier that opens those endpoints. */}
+      {writableOffered ? <span className={css.testWarn}>{t('dialog.capabilities.writeHint')}</span> : null}
+      {/* A tier the live offer cannot fill is stated instead of being silently the narrower one. */}
+      {readableOffered ? null : <span className={css.hint}>{t('dialog.capabilities.noReadable')}</span>}
+      {writableOffered ? null : <span className={css.hint}>{t('dialog.capabilities.noWritable')}</span>}
+      <span className={stale ? css.testWarn : tier === 'none' ? css.hint : css.testOk}>
+        {capabilitySummary()}
+      </span>
+    </>
+  )
+}
diff --git a/packages/experimental/liveshare/src/client/ShareCreateForm.tsx b/packages/experimental/liveshare/src/client/ShareCreateForm.tsx
new file mode 100644
index 0000000000..2b551c0716
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/ShareCreateForm.tsx
@@ -0,0 +1,228 @@
+/**
+ * The share dialog's create form: the session permission, fork switch, and lifetime, plus the one
+ * create action that publishes the Session through the host.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/ShareCreateForm
+ */
+
+import { useId, useRef, useState, type ReactNode } from 'react'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type { CreatedShare } from '../share-api-types.ts'
+import type { NS } from './locales.ts'
+import type { OwnerShares } from './owner-shares.ts'
+import { mayCreateShare, type OwnerIdentityStatus } from './owner-identity.ts'
+import type { RelayConnectivity, RelayPermission } from './share-relay-address.ts'
+import { tierSelection, type CapabilityTier } from './ShareCapabilitiesPicker.tsx'
+import { SharePermissionFields } from './SharePermissionFields.tsx'
+import type { ViewerCapabilityGroup } from './share-types.ts'
+import { readSessionMode, type ViewerSessionMode } from './viewer-capabilities.ts'
+import css from './ShareDialog.module.css'
+
+/** What the Host reported about the values the create request carried. */
+export interface CreatedShareInfo {
+  /** Session permission the Host stored, read through this build's vocabulary. */
+  readonly reportedMode: ViewerSessionMode | undefined
+  /** Session permission the owner asked for. */
+  readonly requestedMode: ViewerSessionMode
+  /** Whether the create request carried the fork switch. */
+  readonly allowsFork: boolean
+}
+
+/** Inputs the dialog supplies to its create form. */
+export interface ShareCreateFormOptions {
+  /** Owner share management the create action calls. */
+  readonly shares: OwnerShares
+  /** Session the share exposes. */
+  readonly sessionId: SessionId
+  /** Human-facing Session title sent with the share. */
+  readonly sessionTitle: string
+  /** What the connectivity step established for the address in force. */
+  readonly connectivity: RelayConnectivity
+  /** What the permission step established for this host at that address. */
+  readonly permission: RelayPermission
+  /** The identity status the host reported for the address in force. */
+  readonly ownerIdentity: OwnerIdentityStatus
+  /** Plugin endpoints the mounted plugins currently offer; none hides the endpoint control. */
+  readonly offered: readonly ViewerCapabilityGroup[]
+  /** Ask whether the address in force answers at all. */
+  readonly testConnectivity: () => Promise<boolean>
+  /** Ask whether this host may publish a share at the address in force. */
+  readonly testPermission: () => Promise<boolean>
+  /** State why the create action could not run, or clear the dialog's error with an empty line. */
+  readonly onError: (message: string) => void
+  /** Adopt the record the host created, before its own listing confirms it. */
+  readonly onCreated: (created: CreatedShare, info: CreatedShareInfo) => Promise<void>
+  /** The line the identity's own state states when it refuses creation. */
+  readonly identityStateLine: () => string
+  /** Localized copy. */
+  readonly t: PropsLocale<typeof NS>['t']
+}
+
+/** Create-form state and the one create action the dialog's footer runs. */
+export interface ShareCreateFormState {
+  /** Whether the create request is in flight. */
+  readonly busy: boolean
+  /** Session permission the share this dialog creates carries. */
+  readonly sessionMode: ViewerSessionMode
+  /** The share's own fork switch. */
+  readonly allowsFork: boolean
+  /** Plugin endpoint tier the share this dialog creates carries. */
+  readonly capabilityTier: CapabilityTier
+  /** Plugin endpoints the mounted plugins currently offer. */
+  readonly offered: readonly ViewerCapabilityGroup[]
+  /** What the Host reported about the fork opt-in, stated when it cannot store it. */
+  readonly modeOutcome: 'granted' | 'notGranted' | undefined
+  /** Base id the create form's session permission tabs derive from. */
+  readonly sessionModeControlId: string
+  /** Base id the create form's plugin-endpoint tabs derive from. */
+  readonly capabilityControlId: string
+  /** Pick the session permission the share this dialog creates carries. */
+  readonly setSessionMode: (mode: ViewerSessionMode) => void
+  /** Set the share's own fork switch. */
+  readonly setAllowsFork: (value: boolean) => void
+  /** Pick the plugin-endpoint tier the share this dialog creates carries. */
+  readonly setCapabilityTier: (tier: CapabilityTier) => void
+  /** Publish the Session through the host and adopt the created record. */
+  readonly create: () => Promise<void>
+  /** Whether a create request is running, readable from the close handler's closure. */
+  readonly isCreating: () => boolean
+}
+
+/**
+ * Own the create form's values and the one create action.
+ * @param options - Owner share management, the Session, the checks, and the adoption hooks.
+ * @returns The form's values, ids, and create action.
+ */
+export function useShareCreateForm({
+  shares, sessionId, sessionTitle, connectivity, permission, ownerIdentity, offered,
+  testConnectivity, testPermission, onError, onCreated, identityStateLine, t,
+}: ShareCreateFormOptions): ShareCreateFormState {
+  const [busy, setBusy] = useState(false)
+  /** Plugin endpoints the new share exposes; closed until the owner picks a tier. */
+  const [capabilityTier, setCapabilityTier] = useState<CapabilityTier>('none')
+  /** Tier the share this dialog creates carries; the narrowest one until the owner widens it. */
+  const [sessionMode, setSessionMode] = useState<ViewerSessionMode>('view')
+  /** The share's own fork switch, independent of the tier; off until the owner turns it on. */
+  const [allowsFork, setAllowsFork] = useState(false)
+  /** What the Host reported about that opt-in, so a Host that cannot store it is stated, never assumed. */
+  const [modeOutcome, setModeOutcome] = useState<'granted' | 'notGranted' | undefined>()
+  const creating = useRef(false)
+  /** Base ids for the segmented controls whose selection the owner edits in this dialog. */
+  const sessionModeControlId = useId()
+  const capabilityControlId = useId()
+
+  const create = async (): Promise<void> => {
+    if (creating.current) return
+    /* v8 ignore next 4 -- the create control is disabled in every state this check refuses. */
+    if (!mayCreateShare(ownerIdentity)) {
+      onError(identityStateLine())
+      return
+    }
+    creating.current = true
+    setBusy(true)
+    onError('')
+    try {
+      // The flow is ordered and each step is confirmed here rather than trusted from an earlier
+      // click: an address that does not answer cannot be verified, and a registration the Relay will
+      // refuse cannot be created.
+      if (connectivity !== 'ok' && !(await testConnectivity())) return
+      if (permission !== 'ok' && permission !== 'warn' && !(await testPermission())) return
+      const created = await shares.create({
+        sessionId,
+        sessionTitle,
+        // The tier and the fork switch travel with the share they belong to, and the tier travels even
+        // at the narrowest one: a Host that cannot store the field states so in its answer rather than
+        // dropping it, and the page never assumes more than the Host reported.
+        sessionMode,
+        allowsFork,
+      })
+      if (!created.ok) throw new Error('share rejected')
+      const data = created.value
+      // The Host's own record is the only statement of what it stored. Its answer carries the stored
+      // tier, read through this build's vocabulary, so a Host that still names the withdrawn
+      // `fork-readonly` tier is read as the view tier it now is rather than as a mismatch.
+      const reported = readSessionMode(data.sessionMode)
+      setModeOutcome(reported === sessionMode ? 'granted' : 'notGranted')
+      // Plugin endpoints are a second host write with their own validation; a failure leaves the
+      // created share usable and names the endpoint save the owner can retry in Share permissions.
+      if (offered.length > 0 && capabilityTier !== 'none') {
+        try {
+          const endpoints = await shares.setCapabilities({
+            shareId: data.shareId,
+            capabilities: tierSelection(offered, capabilityTier),
+          })
+          if (!endpoints.ok) onError(t('dialog.capabilities.createFailed'))
+        } catch {
+          // The share exists; only the endpoint write failed, so its link still reaches the owner.
+          onError(t('dialog.capabilities.createFailed'))
+        }
+      }
+      await onCreated(data, { reportedMode: reported, requestedMode: sessionMode, allowsFork })
+    } catch {
+      onError(t('dialog.hostUnavailable'))
+    } finally {
+      creating.current = false
+      setBusy(false)
+    }
+  }
+
+  return {
+    busy,
+    sessionMode,
+    allowsFork,
+    capabilityTier,
+    offered,
+    modeOutcome,
+    sessionModeControlId,
+    capabilityControlId,
+    setSessionMode,
+    setAllowsFork,
+    setCapabilityTier,
+    create,
+    isCreating: () => creating.current,
+  }
+}
+
+/** Props for the create form fields the dialog renders before the share exists. */
+export interface ShareCreateFormProps extends PropsLocale<typeof NS> {
+  /** The form's values and setters, as `useShareCreateForm` owns them. */
+  readonly form: ShareCreateFormState
+  /** Whether a prerequisite (an owner sign-in) still makes every field unavailable. */
+  readonly disabled?: boolean
+}
+
+/**
+ * Render the create form's session permission, fork switch, and lifetime fields.
+ * @param props - The form state and localized copy.
+ * @returns The fields shown while no share exists yet.
+ */
+export function ShareCreateForm({ form, disabled = false, t }: ShareCreateFormProps): ReactNode {
+  const {
+    busy, sessionMode, allowsFork, capabilityTier, offered,
+    sessionModeControlId, capabilityControlId,
+  } = form
+  const unavailable = disabled || busy
+  return (
+    <fieldset className={css.capabilities}>
+      <legend className={css.label}>{t('dialog.permissions')}</legend>
+      <SharePermissionFields
+        sessionMode={sessionMode}
+        allowsFork={allowsFork}
+        offered={offered}
+        tier={capabilityTier}
+        disabled={unavailable}
+        sessionModeControlId={sessionModeControlId}
+        capabilityControlId={capabilityControlId}
+        onSessionMode={(mode) => { form.setSessionMode(mode) }}
+        onAllowsFork={(value) => { form.setAllowsFork(value) }}
+        onTier={(tier) => { form.setCapabilityTier(tier) }}
+        t={t}
+      />
+      <div className={css.row}>
+        <span className={css.rowLabel}>{t('dialog.expiry')}</span>
+        <span className={css.description}>{t('dialog.expiry.never')}</span>
+      </div>
+    </fieldset>
+  )
+}
diff --git a/packages/experimental/liveshare/src/client/ShareDialog.module.css b/packages/experimental/liveshare/src/client/ShareDialog.module.css
new file mode 100644
index 0000000000..5b74816c96
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/ShareDialog.module.css
@@ -0,0 +1,351 @@
+/* The Modal root owns the viewport padding: cards size against its padding box and cap their own
+   growth at 100%, never a second viewport calculation. */
+.modal {
+  width: min(520px, 100%);
+  max-height: 100%;
+}
+
+.form {
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+  width: 100%;
+  min-height: 0;
+  max-height: 100%;
+  overflow-y: auto;
+  --dsh-scrollbar-thumb: var(--dsw-alias-scrollbar-bg-l2);
+  --dsh-scrollbar-thumb-hover: var(--dsw-alias-scrollbar-hover-l2);
+}
+
+.panel {
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  min-height: 0;
+  max-height: 100%;
+}
+
+.sessionTitle { max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--dsw-alias-label-secondary); font-size: 12px; }
+.panelHeader {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 14px 16px 10px;
+}
+
+.panelTitleBlock { display: flex; flex-direction: column; min-width: 0; }
+.panelTitle {
+  margin: 0;
+  font-size: 15px;
+  font-weight: 600;
+}
+
+.headerGap { flex: 1; }
+
+.iconAction,
+.textAction {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  padding: 4px;
+  border: 0;
+  border-radius: 6px;
+  background: none;
+  color: var(--dsw-alias-label-secondary);
+  font: inherit;
+  font-size: 12px;
+  cursor: pointer;
+}
+
+@media (hover: hover) {
+  .iconAction:hover,
+  .textAction:hover {
+    background: var(--dsw-alias-bg-layer-2);
+    color: var(--dsw-alias-label-primary);
+  }
+}
+
+.body {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  padding: 0 16px 4px;
+  overflow-y: auto;
+  --dsh-scrollbar-thumb: var(--dsw-alias-scrollbar-bg-l2);
+  --dsh-scrollbar-thumb-hover: var(--dsw-alias-scrollbar-hover-l2);
+}
+
+.panelFooter {
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+  padding: 12px 16px 16px;
+}
+
+.row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  font-size: 13px;
+}
+
+.rowLabel { color: var(--dsw-alias-label-primary); flex-shrink: 0; white-space: nowrap; }
+.hint { margin: 0; color: var(--dsw-alias-label-secondary); font-size: 12px; }
+
+
+.identityName { color: var(--dsw-alias-label-primary); }
+
+.description {
+  margin: 0;
+  color: var(--dsw-alias-label-secondary);
+}
+
+.diagnostics { display: flex; flex-direction: column; gap: 6px; color: var(--dsw-alias-label-secondary); font-size: 12px; }
+.diagnostics summary, .outgoing summary { cursor: pointer; }
+
+.field {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.accountRow { display: flex; align-items: center; gap: 6px; min-height: 24px; }
+.identityAvatar { width: 20px; height: 20px; border-radius: 50%; corner-shape: round; object-fit: cover; }
+
+
+/* The editable address fills its row, and its value stays readable whether or not it is truncated. */
+.relayInput { flex: 1; min-width: 0; }
+.relayInput input { font-family: var(--ds-font-family-code); }
+
+.label {
+  font-size: 12px;
+  color: var(--dsw-alias-label-secondary);
+}
+
+/* The share's own permission section, outside the address and account flow above it. */
+.capabilities {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  margin: 0;
+  padding: 8px 10px 10px;
+  border: 0.5px solid var(--dsw-alias-border-l2);
+  border-radius: 8px;
+}
+
+.capabilities legend { padding: 0 4px; }
+
+.linkRow {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+}
+
+.link {
+  min-width: 0;
+  flex: 1;
+  color: var(--dsw-alias-brand-primary);
+  overflow-wrap: anywhere;
+}
+
+.error {
+  color: var(--dsw-alias-state-error-primary);
+  font-size: 12px;
+}
+
+.testing {
+  color: var(--dsw-alias-label-secondary);
+  font-size: 12px;
+}
+
+.testOk {
+  color: var(--dsw-static-green-500);
+  font-size: 12px;
+}
+
+.testWarn {
+  color: var(--dsw-static-amber-500);
+  font-size: 12px;
+}
+
+.testFail {
+  color: var(--dsw-alias-state-error-primary);
+  font-size: 12px;
+}
+
+.requests {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  padding-top: 12px;
+  border-top: 0.5px solid var(--dsw-alias-border-l2);
+}
+
+.outgoing {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  padding-top: 12px;
+  border-top: 0.5px solid var(--dsw-alias-border-l2);
+}
+
+.noRequests {
+  margin: 0;
+  color: var(--dsw-alias-label-secondary);
+  font-size: 12px;
+}
+
+.outgoingList {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+.outgoingItem {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  padding: 10px;
+  border: 0.5px solid var(--dsw-alias-border-l2);
+  border-radius: 8px;
+  font-size: 12px;
+}
+
+.outgoingTop {
+  display: flex;
+  justify-content: space-between;
+  gap: 8px;
+  min-width: 0;
+}
+
+/* Fixed title, state, and action columns so every managed share lines up. */
+.managerRow {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) 80px auto;
+  align-items: center;
+  gap: 8px;
+  min-width: 0;
+}
+
+.managerRow strong {
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.managerRow > :last-child {
+  justify-self: end;
+}
+
+.managerActions {
+  display: flex;
+  gap: 4px;
+  justify-self: end;
+}
+
+/* A long Session title wraps instead of pushing the status off the row. */
+.outgoingTop strong {
+  min-width: 0;
+  overflow-wrap: anywhere;
+}
+
+/* A checkbox and its own words on one line, so the control never reads as the value of the row
+   below the shared right edge. */
+.outgoingToggle {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  cursor: pointer;
+}
+
+.online,
+.offline {
+  flex: none;
+  color: var(--dsw-alias-label-secondary);
+}
+
+.online::before,
+.offline::before {
+  display: inline-block;
+  width: 6px;
+  height: 6px;
+  margin-right: 5px;
+  border-radius: 50%;
+  corner-shape: round;
+  background: var(--dsw-alias-label-tertiary);
+  content: "";
+}
+
+.online::before {
+  background: var(--dsw-static-green-500);
+}
+
+.outgoingLink {
+  color: var(--dsw-alias-brand-primary);
+  overflow-wrap: anywhere;
+}
+
+.outgoingItem time {
+  color: var(--dsw-alias-label-tertiary);
+}
+
+.outgoingActions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  margin-top: 4px;
+}
+
+.subjectRow {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+}
+
+.subjectList {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+}
+
+.subjectChip {
+  height: 24px;
+  padding: 0 10px;
+  border: 0.5px solid var(--dsw-alias-border-l2);
+  border-radius: 12px;
+  corner-shape: round;
+  background: var(--dsw-alias-bg-layer-2);
+  color: var(--dsw-alias-label-primary);
+  font: inherit;
+  font-size: 12px;
+  cursor: pointer;
+}
+
+.requestList {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+.requestItem {
+  display: grid;
+  grid-template-columns: 1fr auto;
+  gap: 2px 12px;
+  padding: 8px 10px;
+  border: 0.5px solid var(--dsw-alias-border-l2);
+  border-radius: 8px;
+  font-size: 12px;
+}
+
+.requestItem time {
+  grid-column: 1 / -1;
+  color: var(--dsw-alias-label-tertiary);
+}
diff --git a/packages/experimental/liveshare/src/client/ShareDialog.tsx b/packages/experimental/liveshare/src/client/ShareDialog.tsx
new file mode 100644
index 0000000000..7d0d87e29b
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/ShareDialog.tsx
@@ -0,0 +1,377 @@
+/** Liveshare owner-side share dialog. */
+
+import { useEffect, useState, type ReactNode } from 'react'
+import {
+  Button, IconCloseOutlineRegular, IconQuestionOutlineRegular, Input, Modal,
+  Tooltip, writeClipboard,
+} from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type { CreatedShare } from '../share-api-types.ts'
+import type { NS } from './locales.ts'
+import type { OwnerShares } from './owner-shares.ts'
+import { mayCreateShare } from './owner-identity.ts'
+import type { OwnerLoginFailure, OwnerLoginPhase } from './owner-login.ts'
+import { useOwnerIdentityLogin } from './owner-identity-login.ts'
+import { ShareEditPanel, useShareEdit } from './ShareEditPanel.tsx'
+import { ShareCreateForm, useShareCreateForm, type CreatedShareInfo } from './ShareCreateForm.tsx'
+import { useShareRelayAddress } from './share-relay-address.ts'
+import css from './ShareDialog.module.css'
+
+/** Props for one session-scoped share dialog. */
+export interface LiveshareShareDialogProps extends PropsLocale<typeof NS> {
+  /** Session this share exposes. */
+  readonly sessionId: SessionId
+  /** Human-facing Session title sent with the share; the panel deliberately does not print it. */
+  readonly sessionTitle: string
+  /** Address the mounted share host reported as saved; empty while none is saved. */
+  readonly defaultRelay: string
+  /** Owner share management, addressed through the generated `liveshareShares` namespace. */
+  readonly shares: OwnerShares
+  /** Open the global share manager. */
+  readonly onManage?: () => void
+  /** Close the dialog. */
+  readonly onClose: () => void
+}
+
+/**
+ * Create one read-only Liveshare share and show its link.
+ * @param props - Session identity, relay default, close callback, and copy.
+ * @returns the share modal.
+ */
+export function LiveshareShareDialog({
+  sessionId, sessionTitle, defaultRelay, shares, onManage, onClose, t,
+}: LiveshareShareDialogProps): ReactNode {
+  const [link, setLink] = useState('')
+  const [error, setError] = useState('')
+  const [copied, setCopied] = useState(false)
+  const {
+    draft: relayDraft, busy: relayBusy, error: relayError, reverify: relayReverify,
+    effectiveRelay, named: relayNamed, connectivity, connectivityError,
+    permission, permissionError, testing,
+    draftUnsaved: relayDraftUnsaved, editDraft, setReverify: setRelayReverify, resetPermission,
+    testConnectivity, testPermission, save: saveRelayAddress,
+  } = useShareRelayAddress({ shares, sessionId, defaultRelay, t })
+  const {
+    status: ownerIdentity, login, busy: loginBusy, needsVerification,
+    refresh: refreshIdentity, begin: beginLogin, name: identityName,
+    stateLine: identityStateLine, tooltip: identityTooltip, line: loginLine,
+  } = useOwnerIdentityLogin({
+    shares,
+    relay: effectiveRelay,
+    t,
+    onVerified: () => {
+      setRelayReverify(false)
+      resetPermission()
+    },
+  })
+  const edit = useShareEdit({
+    shares,
+    sessionId,
+    onLink: (next) => { setLink(current => current || next) },
+    t,
+  })
+
+  /**
+   * Save the address the owner typed and read the host's answer back.
+   * @param relayUrl - Address to put in force.
+   * @returns Nothing; the hook states the outcome.
+   */
+  const saveRelay = (relayUrl: string): Promise<void> => saveRelayAddress(relayUrl, {
+    verified: ownerIdentity.state === 'verified',
+    refresh: refreshIdentity,
+  })
+
+  /**
+   * Adopt the record the host answered a create with.
+   *
+   * The host's own record is the only statement of what it stored; until its read answers, the create
+   * form's own values are what the fields show.
+   * @param data - The share the host created.
+   * @param info - The session permission it stored and the fork switch the request carried.
+   */
+  const onCreated = async (data: CreatedShare, info: CreatedShareInfo): Promise<void> => {
+    setLink(data.link)
+    await edit.adoptCreated(data, info.reportedMode, info.allowsFork)
+  }
+
+  const createForm = useShareCreateForm({
+    shares, sessionId, sessionTitle, connectivity, permission, ownerIdentity, offered: edit.offered,
+    testConnectivity, testPermission, onError: setError, onCreated, identityStateLine, t,
+  })
+  const { busy, modeOutcome, create, isCreating } = createForm
+
+  const copy = async (): Promise<void> => {
+    const ok = await writeClipboard(link)
+    setCopied(ok)
+    setError(ok ? '' : t('dialog.copyFailed'))
+  }
+
+  /**
+   * Close the dialog, warning once when the owner has picks that were never saved.
+   *
+   * A second close after the warning discards them: the warning states that before it happens.
+   */
+  const requestClose = (): void => {
+    if (isCreating()) return
+    if (edit.dirty && !edit.discardWarned) {
+      edit.warnDiscard()
+      return
+    }
+    onClose()
+  }
+
+  /** Whether this dialog may configure and create the share: a verified owner is the only prerequisite. */
+  const canConfigure = (): boolean => mayCreateShare(ownerIdentity)
+
+  /**
+   * The sign-in attempt whose phase the status line states instead of the flow's own line.
+   *
+   * A finished attempt leaves the line to the Host's own answer; an address that is not in force
+   * outranks the attempt, because signing in cannot start there.
+   * @returns The attempt to state, or undefined when the flow's own line stands.
+   */
+  const activeLogin = (): { readonly phase: OwnerLoginPhase; readonly failure?: OwnerLoginFailure } | undefined =>
+    login === undefined || login.phase === 'verified' || !relayNamed || relayDraftUnsaved() ? undefined : login
+
+  /**
+   * The one status line the dialog states right now.
+   *
+   * It belongs to the first thing the owner must settle: the address, the address connection, the
+   * sign-in attempt, the account state, then the publish permission. Every sentence a Host produced is
+   * printed unchanged; the fallbacks state that the Host reported nothing rather than naming a cause
+   * this page cannot see.
+   * @returns Copy for the state the dialog is in.
+   */
+  const statusLine = (): string => {
+    const attempt = activeLogin()
+    if (attempt !== undefined) return loginLine(attempt.phase, attempt.failure)
+    if (!relayNamed || relayDraftUnsaved()) {
+      return relayDraftUnsaved() ? t('dialog.relayUnsavedHint') : t('dialog.addressHint')
+    }
+    if (relayReverify) return t('dialog.relayReverify')
+    if (connectivity === 'testing') return t('dialog.connectivityChecking')
+    if (connectivity === 'unreachable') return connectivityError
+    if (connectivity !== 'ok') return t('dialog.connectivityChecking')
+    if (!canConfigure()) return identityStateLine()
+    if (permission === 'checking') return t('dialog.permissionChecking')
+    if (permission === 'blocked' || permission === 'warn') return permissionError
+    if (permission === 'ok') return t('dialog.permissionOk')
+    return t('dialog.permissionPending')
+  }
+
+  /** Visual state of that line: a settled success, a warning, or a failure the owner must act on. */
+  const statusClass = (): string | undefined => {
+    const attempt = activeLogin()
+    if (attempt !== undefined) return attempt.phase === 'failed' ? css.testWarn : css.description
+    if (!relayNamed || relayDraftUnsaved() || relayReverify) return relayReverify ? css.testWarn : css.description
+    if (connectivity === 'unreachable') return css.testFail
+    if (connectivity !== 'ok') return css.description
+    if (!canConfigure()) return css.testWarn
+    if (permission === 'blocked') return css.testFail
+    if (permission === 'warn') return css.testWarn
+    if (permission === 'ok') return css.testOk
+    return css.description
+  }
+
+  /** Whether a started sign-in attempt failed, which is the only status announced as an alert. */
+  const statusAlerts = (): boolean => activeLogin()?.phase === 'failed'
+
+  /**
+   * Why the create action is unavailable, in the words of the state that blocks it.
+   * @returns The reason for the disabled control, or undefined while it may run.
+   */
+  const createBlockedReason = (): string | undefined => {
+    if (!relayNamed || relayDraftUnsaved()) return t('dialog.addressHint')
+    if (connectivity === 'unreachable') return connectivityError
+    if (!canConfigure()) return identityStateLine()
+    if (permission === 'blocked') return permissionError
+    return undefined
+  }
+
+  /** Whether the sign-in action may run: the address it would sign in at must be saved and answering. */
+  const mayVerify = (): boolean => relayNamed && !relayDraftUnsaved() && connectivity === 'ok'
+
+  // The permission check follows sign-in: once the Host reports a verified identity for an address
+  // that answers, this host asks whether the Relay accepts its credential there without another click.
+  useEffect(() => {
+    if (connectivity !== 'ok' || ownerIdentity.state !== 'verified' || permission !== 'idle') return
+    void testPermission()
+  }, [connectivity, ownerIdentity.state, permission])
+
+  return (
+    <Modal
+      open
+      headless
+      onClose={requestClose}
+      title={t('dialog.title')}
+      className={css.modal as string}
+    >
+      <div className={css.panel}>
+        <header className={css.panelHeader}>
+          <div className={css.panelTitleBlock}>
+            <h2 className={css.panelTitle}>{t('dialog.title')}</h2>
+            <span className={css.sessionTitle} title={sessionTitle}>{sessionTitle}</span>
+          </div>
+          <Tooltip label={t('dialog.help')} side="bottom">
+            <button type="button" className={css.iconAction} aria-label={t('dialog.help')}>
+              <IconQuestionOutlineRegular size={14} />
+            </button>
+          </Tooltip>
+          <span className={css.headerGap} />
+          {onManage === undefined ? null : (
+            <button type="button" className={css.textAction} disabled={busy} onClick={onManage}>
+              {t('dialog.manage')}
+            </button>
+          )}
+          <button
+            type="button"
+            className={css.iconAction}
+            aria-label={t(link === '' ? 'dialog.cancel' : 'dialog.done')}
+            onClick={requestClose}
+          >
+            <IconCloseOutlineRegular size={14} />
+          </button>
+        </header>
+        <div className={css.body}>
+          {/* The address comes first: nothing downstream — connectivity, sign-in, or creating the
+            share — can be settled before the owner has saved one. An untouched field states that no
+            address is set; the owner types one and saves it, which is what puts it in force. */}
+          <div className={css.field}>
+            <span className={css.label}>{t('dialog.relay')}</span>
+            <div className={css.linkRow}>
+              <Input
+                className={css.relayInput as string}
+                value={relayDraft}
+                disabled={relayBusy}
+                aria-label={t('dialog.relay')}
+                title={relayDraft}
+                placeholder={t('dialog.relayUnset')}
+                onChange={(event) => { editDraft(event.target.value) }}
+                onBlur={() => {
+                  if (relayDraft.trim() !== '' && (!relayNamed || relayDraftUnsaved())) void saveRelay(relayDraft)
+                }}
+                onKeyDown={(event) => {
+                  if (event.key === 'Enter') {
+                    event.preventDefault()
+                    void saveRelay(relayDraft)
+                  }
+                }}
+              />
+            </div>
+            {relayDraftUnsaved() ? <span className={css.hint}>{t('dialog.relayUnsavedHint')}</span> : null}
+            {relayError === '' ? null : <span className={css.testFail} role="alert">{relayError}</span>}
+          </div>
+          {link === '' ? null : (
+            <div className={css.field}>
+              <span className={css.label}>{t('dialog.shareLink')}</span>
+              <div className={css.linkRow}>
+                <Input
+                  className={css.relayInput as string}
+                  value={link}
+                  readOnly
+                  aria-label={t('dialog.shareLink')}
+                  onFocus={(event) => { event.target.select() }}
+                />
+                <Button variant="outline" onClick={() => { void copy() }}>
+                  {t(copied ? 'dialog.copied' : 'dialog.copy')}
+                </Button>
+              </div>
+              <span className={css.hint}>{t('dialog.linkHelp')}</span>
+            </div>
+          )}
+          {/* The account comes before the share's own settings: configuration is unavailable until
+            the owner is signed in. The address row that used to carry both facts is gone; the status
+            line below is now the one place the dialog states what is missing. */}
+          <div className={css.accountRow}>
+            {ownerIdentity.state === 'verified' ? (
+              <>
+                {ownerIdentity.avatarUrl !== undefined
+                && <img className={css.identityAvatar} src={ownerIdentity.avatarUrl} alt="" />}
+                <span className={css.identityName} title={identityTooltip()}>{identityName()}</span>
+                <span className={css.headerGap} />
+                <button
+                  type="button"
+                  className={css.textAction}
+                  disabled={busy || loginBusy || !mayVerify()}
+                  title={mayVerify() ? undefined : t('dialog.identity.verifyBlocked')}
+                  onClick={beginLogin}
+                >
+                  {t('dialog.identity.reverify')}
+                </button>
+              </>
+            ) : (
+              <>
+                {needsVerification ? (
+                  <Button
+                    variant="primary"
+                    size="sm"
+                    disabled={busy || loginBusy || !mayVerify()}
+                    title={mayVerify() ? undefined : t('dialog.identity.verifyBlocked')}
+                    onClick={beginLogin}
+                  >
+                    {t('dialog.identity.verify')}
+                  </Button>
+                ) : ownerIdentity.state === 'unknown' ? (
+                  <Button
+                    variant="ghost"
+                    size="sm"
+                    disabled={busy || !mayVerify()}
+                    title={mayVerify() ? undefined : t('dialog.identity.verifyBlocked')}
+                    onClick={() => { refreshIdentity() }}
+                  >
+                    {t('dialog.identity.retry')}
+                  </Button>
+                ) : null}
+              </>
+            )}
+          </div>
+          {/* One status line named by the first unsettled state: the sign-in phase never stacks under
+            it, and every sentence the Host produced is printed unchanged. */}
+          <span className={statusClass()} role={statusAlerts() ? 'alert' : 'status'}>
+            {statusLine()}
+          </span>
+          {link === '' ? <ShareCreateForm form={createForm} disabled={!canConfigure()} t={t} /> : null}
+          {/* What the share grants, edited here for an existing share. It belongs to the share, not to
+            the address and account flow above it, so it renders only once a share exists; the panel
+            footer carries the one save that submits all three fields. */}
+          <ShareEditPanel visible={link !== ''} edit={edit} t={t} />
+          {modeOutcome === 'notGranted' ? <p className={css.testWarn}>{t('dialog.sessionMode.notGranted')}</p> : null}
+          {error === '' ? null : <div className={css.error} role="alert">{error}</div>}
+        </div>
+        <footer className={css.panelFooter}>
+          {link === ''
+            ? <>
+              <Button variant="outline" disabled={busy} onClick={onClose}>{t('dialog.cancel')}</Button>
+              <Button
+                variant="primary"
+                disabled={busy || testing || !relayNamed || relayDraftUnsaved() || connectivity === 'unreachable'
+                  || permission === 'blocked' || !mayCreateShare(ownerIdentity)}
+                title={createBlockedReason()}
+                onClick={() => { void create() }}
+              >
+                {busy ? t('dialog.creating') : testing ? t('dialog.testing') : t('dialog.create')}
+              </Button>
+            </>
+            : <>
+              {/* The save sits outside the scrolling body, so a long list cannot push it out of view. */}
+              {edit.dirty ? (
+                <span className={edit.discardWarned ? css.testWarn : css.hint}>
+                  {t(edit.discardWarned ? 'dialog.permissions.discard' : 'dialog.permissions.unsaved')}
+                </span>
+              ) : null}
+              <span className={css.headerGap} />
+              <Button variant="outline" onClick={requestClose}>{t('dialog.done')}</Button>
+              <Button
+                variant="primary"
+                disabled={!edit.dirty || edit.saveBusy || edit.editableShare === undefined}
+                onClick={() => { void edit.savePermissions() }}
+              >
+                {t(edit.saveBusy ? 'dialog.permissions.saving' : 'dialog.permissions.save')}
+              </Button>
+            </>}
+        </footer>
+      </div>
+    </Modal>
+  )
+}
diff --git a/packages/experimental/liveshare/src/client/ShareEditPanel.tsx b/packages/experimental/liveshare/src/client/ShareEditPanel.tsx
new file mode 100644
index 0000000000..ac88c9574a
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/ShareEditPanel.tsx
@@ -0,0 +1,472 @@
+/**
+ * The stored share's editable permission, fork switch, and plugin-endpoint exposure, with the one
+ * save that submits all three through the host.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/ShareEditPanel
+ */
+
+import { useEffect, useId, useRef, useState, type ReactNode } from 'react'
+
+import { Button } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type { CreatedShare } from '../share-api-types.ts'
+import type { NS } from './locales.ts'
+import type { OwnerShares } from './owner-shares.ts'
+import { readStoredTier, selectionKeys, sameKeys, tierSelection, type CapabilityTier } from './ShareCapabilitiesPicker.tsx'
+import { readAccess, readCapabilityGroups, type OutgoingShare, type ViewerCapabilityGroup } from './share-types.ts'
+import { readSessionMode, type ViewerSessionMode } from './viewer-capabilities.ts'
+import { SharePermissionFields } from './SharePermissionFields.tsx'
+import css from './ShareDialog.module.css'
+
+/** Inputs the dialog supplies to its stored-share edit state. */
+export interface UseShareEditOptions {
+  /** Owner share management the edit state reads and saves through. */
+  readonly shares: OwnerShares
+  /** Session whose share this dialog edits. */
+  readonly sessionId: SessionId
+  /** Adopt a link the host listed when the dialog has none yet. */
+  readonly onLink: (link: string) => void
+  /** Localized copy. */
+  readonly t: PropsLocale<typeof NS>['t']
+}
+
+/** Stored-share values, the owner's unsaved picks, and the one save they share. */
+export interface ShareEditState {
+  /** Confirmed ACL scope of the share on hand, as the host reported it. */
+  readonly access: ReturnType<typeof readAccess>
+  /** Plugin endpoints the mounted plugins currently offer; none hides the endpoint control. */
+  readonly offered: readonly ViewerCapabilityGroup[]
+  /** The tier the control and the save act on: the owner's own pick, or the record's whole tier. */
+  readonly tier: CapabilityTier
+  /** Whether the record matches no tier, so saving replaces it instead of showing a tier it is not. */
+  readonly stale: boolean
+  /** The session tier the owner edits here: their pick, or the one the host reported. */
+  readonly shareMode: ViewerSessionMode | undefined
+  /** The fork switch the owner edits here: their pick, or the one the host reported (off when absent). */
+  readonly shareFork: boolean
+  /** The share whose stored record this dialog edits; nothing until the host lists one. */
+  readonly editableShare: string | undefined
+  /** Stored deadline; absent means the share never expires. */
+  readonly expiresAt: string | undefined
+  /** Whether the share holds anything the owner has picked but not saved. */
+  readonly dirty: boolean
+  /** Whether a close attempt already warned about unsaved changes; a second one closes. */
+  readonly discardWarned: boolean
+  /** Whether the save is in flight. */
+  readonly saveBusy: boolean
+  /** What the last accepted save stored, already localized. */
+  readonly saveNotice: string
+  /** Why the last save did not land, already localized. */
+  readonly saveError: string
+  /** Base id the tier control's own tab and panel ids derive from. */
+  readonly capabilityControlId: string
+  /** Base id the share's own session permission tabs derive from. */
+  readonly shareModeControlId: string
+  /** Record the owner's tier pick. */
+  readonly pickTier: (tier: CapabilityTier) => void
+  /** Record the owner's session permission pick. */
+  readonly pickMode: (mode: ViewerSessionMode) => void
+  /** Record the owner's fork-switch pick. */
+  readonly pickFork: (fork: boolean) => void
+  /** Ask the save to clear the stored deadline and make the share never expire. */
+  readonly clearExpiry: () => void
+  /** Save the session permission, the fork switch, and endpoint exposure through the host. */
+  readonly savePermissions: () => Promise<void>
+  /** Record that a close attempt warned about unsaved changes. */
+  readonly warnDiscard: () => void
+  /**
+   * Adopt the record the host answered a create with.
+   * @param created - The share the host created.
+   * @param reportedMode - Session permission it stored, read through this build's vocabulary.
+   * @param allowsFork - Whether the create request carried the fork switch.
+   */
+  readonly adoptCreated: (
+    created: CreatedShare,
+    reportedMode: ViewerSessionMode | undefined,
+    allowsFork: boolean,
+  ) => Promise<void>
+}
+
+/**
+ * Read the stored share record, keep the owner's unsaved picks, and save all three editable fields.
+ * @param options - Owner share management, the Session, the link adoption callback, and localized copy.
+ * @returns The stored values, the owner's picks, and the one save.
+ */
+export function useShareEdit({
+  shares, sessionId, onLink, t,
+}: UseShareEditOptions): ShareEditState {
+  const [confirmedAccess, setConfirmedAccess] = useState<ReturnType<typeof readAccess>>()
+  /** Plugin endpoints the mounted plugins currently offer; none hides the endpoint control. */
+  const [offered, setOffered] = useState<readonly ViewerCapabilityGroup[]>([])
+  /** Endpoint selection the host reported for the share on hand. */
+  const [storedCapabilities, setStoredCapabilities] = useState<readonly ViewerCapabilityGroup[]>([])
+  const [storedExpiresAt, setStoredExpiresAt] = useState<string>()
+  /** Tier and fork switch the host reported for the share on hand. */
+  const [storedPermission, setStoredPermission] = useState<{
+    readonly mode?: ViewerSessionMode
+    readonly fork: boolean
+  }>({ fork: false })
+  /** The session tier and fork switch the owner picked but has not saved. */
+  const [pickedTier, setPickedTier] = useState<CapabilityTier>()
+  const [pickedMode, setPickedMode] = useState<ViewerSessionMode>()
+  const [pickedFork, setPickedFork] = useState<boolean>()
+  const [pickedExpiry, setPickedExpiry] = useState(false)
+  const [saveBusy, setSaveBusy] = useState(false)
+  const [saveNotice, setSaveNotice] = useState('')
+  const [saveError, setSaveError] = useState('')
+  /** Whether a close attempt already warned about unsaved changes; a second one closes. */
+  const [discardWarned, setDiscardWarned] = useState(false)
+  /** Base id the tier control's own tab and panel ids derive from. */
+  const capabilityControlId = useId()
+  /** Base id the share's own session permission tabs derive from. */
+  const shareModeControlId = useId()
+  /** The share whose stored record this dialog edits; nothing until the host lists one. */
+  const [editableShare, setEditableShare] = useState<string>()
+  /** The same share, readable from the polling closure without re-subscribing it on every adoption. */
+  const permissionShare = useRef<string>()
+  /** Whether the owner holds unsaved picks, readable from that same closure. */
+  const unsaved = useRef(false)
+
+  /**
+   * Apply the stored values one host record carries, leaving the owner's own picks in place.
+   *
+   * A save the host half accepted reads its record back through here: the fields state what the host
+   * stored, while a pick the save never wrote stays on screen for the retry.
+   * @param share - Share the host listed.
+   */
+  const adoptStored = (share: OutgoingShare): void => {
+    setConfirmedAccess(readAccess(share.access))
+    const mode = readSessionMode(share.sessionMode)
+    setStoredPermission({
+      ...(mode === undefined ? {} : { mode }),
+      fork: share.allowsFork === true,
+    })
+    setStoredCapabilities(readCapabilityGroups(share.viewerCapabilities))
+    setStoredExpiresAt(share.expiresAt)
+  }
+
+  /**
+   * Apply one host-reported share record to every field this dialog lets the owner edit.
+   *
+   * This is the one place the stored values change. A polling read adopts a record only while the
+   * owner holds no unsaved pick, so those picks survive it and the panel still follows the host.
+   * @param share - Share the host listed.
+   */
+  const adoptShare = (share: OutgoingShare): void => {
+    permissionShare.current = share.shareId
+    setEditableShare(share.shareId)
+    onLink(share.link)
+    adoptStored(share)
+    setPickedTier(undefined)
+    setPickedMode(undefined)
+    setPickedFork(undefined)
+    setPickedExpiry(false)
+    setDiscardWarned(false)
+  }
+
+  /**
+   * Read the host's own record for one share.
+   *
+   * A save is confirmed by what the host stored rather than by this page's request, so both the
+   * confirming read after a save and the re-read after a half-accepted one go through here.
+   * @param shareId - Share to read back.
+   * @returns The listed record, or undefined when the host cannot answer with one.
+   */
+  const readShareRecord = async (shareId: string): Promise<OutgoingShare | undefined> => {
+    try {
+      const listed = await shares.list()
+      if (!listed.ok) return undefined
+      return listed.value.shares.find(share => share.shareId === shareId)
+    } catch (_sharesUnavailable) {
+      return undefined
+    }
+  }
+
+  /**
+   * Read the host's own record for one share back into this dialog.
+   *
+   * A save is confirmed by what the host stored rather than by this page's request, so this read
+   * follows every successful save; when it cannot answer, the polling read adopts the share instead.
+   * @param shareId - Share to read back.
+   */
+  const refreshShare = async (shareId: string): Promise<void> => {
+    const fresh = await readShareRecord(shareId)
+    if (fresh !== undefined) adoptShare(fresh)
+  }
+
+  useEffect(() => {
+    let cancelled = false
+    const load = async (): Promise<void> => {
+      try {
+        const listed = await shares.list()
+        if (cancelled || !listed.ok) return
+        const existing = listed.value.shares.find(share => share.sessionId === sessionId)
+        if (existing !== undefined) {
+          onLink(existing.link)
+          setConfirmedAccess(readAccess(existing.access))
+          // The editable record belongs to one share: the first sight of that share adopts it, and
+          // every later poll leaves the owner's own unsaved picks alone.
+          if (permissionShare.current !== existing.shareId) {
+            setSaveNotice('')
+            setSaveError('')
+            adoptShare(existing)
+          } else if (!unsaved.current) {
+            // The owner holds nothing unconfirmed, so this panel follows the host's record: a change
+            // made in Share management shows here instead of two panels stating different values.
+            adoptShare(existing)
+          }
+        }
+      } catch { /* The dialog keeps the last known list when polling fails. */ }
+    }
+    void load()
+    const timer = setInterval(() => { void load() }, 3000)
+    return () => {
+      cancelled = true
+      clearInterval(timer)
+    }
+  }, [sessionId, shares])
+
+  // The offer list decides whether the section exists at all, so it is read once: an unreadable answer
+  // means nothing is offered to this page, which presents no endpoint rather than inventing one.
+  useEffect(() => {
+    let cancelled = false
+    const load = async (): Promise<void> => {
+      try {
+        const offeredNow = await shares.capabilities()
+        if (!cancelled && offeredNow.ok) setOffered(readCapabilityGroups(offeredNow.value.capabilities))
+      } catch { /* A host that cannot answer offers nothing; the section stays hidden. */ }
+    }
+    void load()
+    return () => { cancelled = true }
+  }, [shares])
+
+  /** What the share's own record is, as a whole tier or as a subset no tier represents. */
+  const recordTier = readStoredTier(offered, storedCapabilities)
+
+  /** The tier the control and the save act on: the owner's own pick, or the record's whole tier. */
+  const tier: CapabilityTier = pickedTier ?? recordTier.tier
+
+  /** The session tier the owner edits here: their pick, or the one the host reported. */
+  const shareMode = pickedMode ?? storedPermission.mode
+
+  /** The fork switch the owner edits here: their pick, or the one the host reported (off when absent). */
+  const shareFork = pickedFork ?? storedPermission.fork
+
+  /** Whether the record matches no tier, so saving replaces it instead of showing a tier it is not. */
+  const capabilityStale = recordTier.stale
+
+  /**
+   * Whether the share holds anything the owner has picked but not saved.
+   *
+   * Each field is compared against the host's own record rather than against "was it clicked", so
+   * picking a value the share already holds is not an unsaved change.
+   */
+  const dirty = (pickedTier !== undefined
+      && !sameKeys(selectionKeys(tierSelection(offered, tier)), selectionKeys(storedCapabilities)))
+    || shareMode !== storedPermission.mode
+    || shareFork !== storedPermission.fork
+    || (pickedExpiry && storedExpiresAt !== undefined)
+
+  // The polling closure reads this instead of the value above, which it captured at mount.
+  useEffect(() => { unsaved.current = dirty }, [dirty])
+
+  /** Clear a previous save's outcome and warn state when the owner picks another value. */
+  const pickChanged = (): void => {
+    setSaveNotice('')
+    setSaveError('')
+    setDiscardWarned(false)
+  }
+
+  /**
+   * Save the share's session tier, its fork switch, and endpoint exposure through the Host.
+   *
+   * They are one save for the owner: the permission write carries the tier and the switch, the
+   * endpoint write carries the tier's expansion, and a refusal keeps every picked value on screen.
+   * The host's own record is read back on success — and after a permission write the endpoint write
+   * did not follow — so the fields state what it stored.
+   */
+  const savePermissions = async (): Promise<void> => {
+    const shareId = editableShare
+    /* v8 ignore next -- the save control is disabled while a save is in flight and until a share is adopted. */
+    if (saveBusy || shareId === undefined) return
+    setSaveBusy(true)
+    setSaveNotice('')
+    setSaveError('')
+    let permissionSaved = false
+    try {
+      const permission = await shares.updatePermissions({
+        shareId,
+        ...(shareMode === undefined ? {} : { sessionMode: shareMode }),
+        allowsFork: shareFork,
+        ...(pickedExpiry ? { ttlMinutes: null } : {}),
+      })
+      if (!permission.ok) throw new Error('session permission rejected')
+      // From here the permission write is on the host: a later refusal must not be stated as the whole
+      // save failing.
+      permissionSaved = true
+      // A page no plugin offers an endpoint to cannot state an endpoint selection, so it must not
+      // write one: only the permission fields it does know are saved.
+      if (offered.length > 0) {
+        const endpoints = await shares.setCapabilities({
+          shareId,
+          capabilities: tierSelection(offered, tier),
+        })
+        if (!endpoints.ok) throw new Error('capability selection rejected')
+      }
+      // The host accepted this write, so the fields state it from here; the confirming read below
+      // replaces it with the record the host actually stored.
+      setStoredPermission({
+        ...(shareMode === undefined ? {} : { mode: shareMode }),
+        fork: shareFork,
+      })
+      setStoredCapabilities(tierSelection(offered, tier))
+      setPickedTier(undefined)
+      setPickedMode(undefined)
+      setPickedFork(undefined)
+      setPickedExpiry(false)
+      setDiscardWarned(false)
+      setSaveNotice(t('dialog.permissions.saved'))
+      await refreshShare(shareId)
+    } catch {
+      // The picks stay on screen: a refused or half-accepted save is retried by saving again, not
+      // re-derived from a record the owner did not ask for.
+      if (!permissionSaved) {
+        setSaveError(t('dialog.permissions.failed'))
+      } else {
+        // The permission write landed and only the endpoint write did not: state which of the two was
+        // saved, and re-read the host's record so the tier and switch read what it stored instead of
+        // claiming nothing changed.
+        setSaveError(t('dialog.permissions.partial'))
+        const fresh = await readShareRecord(shareId)
+        if (fresh !== undefined) adoptStored(fresh)
+      }
+    } finally {
+      setSaveBusy(false)
+    }
+  }
+
+  /**
+   * Adopt the record the host answered a create with.
+   * @param created - The share the host created.
+   * @param reportedMode - Session permission it stored, read through this build's vocabulary.
+   * @param allowsFork - Whether the create request carried the fork switch.
+   */
+  const adoptCreated = async (
+    created: CreatedShare,
+    reportedMode: ViewerSessionMode | undefined,
+    allowsFork: boolean,
+  ): Promise<void> => {
+    setConfirmedAccess(readAccess(created.access))
+    setStoredPermission({
+      ...(reportedMode === undefined ? {} : { mode: reportedMode }),
+      fork: allowsFork,
+    })
+    setStoredCapabilities([])
+    setStoredExpiresAt(undefined)
+    setPickedTier(undefined)
+    setPickedMode(undefined)
+    setPickedFork(undefined)
+    setPickedExpiry(false)
+    setSaveNotice('')
+    setSaveError('')
+    await refreshShare(created.shareId)
+  }
+
+  return {
+    access: confirmedAccess,
+    offered,
+    tier,
+    stale: capabilityStale,
+    shareMode,
+    shareFork,
+    editableShare,
+    expiresAt: storedExpiresAt,
+    dirty,
+    discardWarned,
+    saveBusy,
+    saveNotice,
+    saveError,
+    capabilityControlId,
+    shareModeControlId,
+    pickTier: (next) => { pickChanged(); setPickedTier(next) },
+    pickMode: (next) => { pickChanged(); setPickedMode(next) },
+    pickFork: (next) => { pickChanged(); setPickedFork(next) },
+    clearExpiry: () => { pickChanged(); setPickedExpiry(true) },
+    savePermissions,
+    warnDiscard: () => { setDiscardWarned(true) },
+    adoptCreated,
+  }
+}
+
+/** Props for the stored share's permission section. */
+export interface ShareEditPanelProps extends PropsLocale<typeof NS> {
+  /** Whether a share exists to edit; the section renders nothing before one does. */
+  readonly visible: boolean
+  /** Stored values, owner picks, and the one save they share. */
+  readonly edit: ShareEditState
+}
+
+/**
+ * Render the stored share's session permission, fork switch, and endpoint tier.
+ * @param props - The edit state, whether a share exists, and localized copy.
+ * @returns The permission section, or nothing while no share exists.
+ */
+export function ShareEditPanel({ visible, edit, t }: ShareEditPanelProps): ReactNode {
+  if (!visible) return null
+  return (
+    <fieldset className={css.capabilities}>
+      <legend className={css.label}>{t('dialog.permissions')}</legend>
+      <SharePermissionFields
+        sessionMode={edit.shareMode}
+        allowsFork={edit.shareFork}
+        offered={edit.offered}
+        tier={edit.tier}
+        stale={edit.stale}
+        disabled={edit.saveBusy}
+        sessionModeControlId={edit.shareModeControlId}
+        capabilityControlId={edit.capabilityControlId}
+        onSessionMode={(mode) => { edit.pickMode(mode) }}
+        onAllowsFork={(value) => { edit.pickFork(value) }}
+        onTier={(tier) => { edit.pickTier(tier) }}
+        t={t}
+      />
+      <div className={css.row}>
+        <span className={css.rowLabel}>{t('dialog.expiry')}</span>
+        <span className={css.description}>
+          {edit.expiresAt === undefined
+            ? t('dialog.expiry.never')
+            : t('dialog.expiry.until', { time: new Date(edit.expiresAt).toISOString().slice(0, 10) })}
+        </span>
+        {edit.expiresAt === undefined ? null : (
+          <Button variant="ghost" size="sm" disabled={edit.saveBusy} onClick={edit.clearExpiry}>
+            {t('dialog.expiry.clear')}
+          </Button>
+        )}
+      </div>
+      <div className={css.field}>
+        <span className={css.label}>{t('dialog.linkSharing')}</span>
+        {edit.access === undefined ? (
+          <p className={css.description}>{t('dialog.accessUnavailable')}</p>
+        ) : (
+          <>
+            <p className={css.description}>
+              {t(edit.access.mode === 'selected' ? 'dialog.mode.selected' : 'dialog.mode.open')}
+            </p>
+            {edit.access.mode !== 'selected' ? null : (
+              <>
+                <p className={css.description}>{t('dialog.selectedCount', { count: edit.access.selectedCount })}</p>
+                <p className={css.testWarn}>{t('dialog.selectedRetired')}</p>
+              </>
+            )}
+            {edit.access.deploymentCount > 0
+              ? <p className={css.testWarn}>{t('dialog.deploymentAccess', { count: edit.access.deploymentCount })}</p>
+              : null}
+          </>
+        )}
+      </div>
+      {edit.saveNotice === '' ? null : <span className={css.testOk}>{edit.saveNotice}</span>}
+      {edit.saveError === '' ? null : <span className={css.testFail} role="alert">{edit.saveError}</span>}
+    </fieldset>
+  )
+}
diff --git a/packages/experimental/liveshare/src/client/SharePermissionFields.tsx b/packages/experimental/liveshare/src/client/SharePermissionFields.tsx
new file mode 100644
index 0000000000..d179ac53c4
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/SharePermissionFields.tsx
@@ -0,0 +1,111 @@
+/**
+ * The session permission, fork switch, and plugin-endpoint tier shared by the create form and the
+ * stored-share editor.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/SharePermissionFields
+ */
+
+import type { ReactNode } from 'react'
+import { SegmentedControl, Switch } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { NS } from './locales.ts'
+import { ShareCapabilitiesPicker, type CapabilityTier } from './ShareCapabilitiesPicker.tsx'
+import { sessionModeOptions } from './share-options.ts'
+import type { ViewerCapabilityGroup } from './share-types.ts'
+import type { ViewerSessionMode } from './viewer-capabilities.ts'
+import css from './ShareDialog.module.css'
+
+/** Values and callbacks one shared permission field renders. */
+export interface SharePermissionFieldsProps extends PropsLocale<typeof NS> {
+  /** Session permission on hand; absent when the Host cannot place the stored tier. */
+  readonly sessionMode: ViewerSessionMode | undefined
+  /** Whether no supported session permission exists, stated instead of an empty control. */
+  readonly modeUnsupported?: boolean
+  /** The share's own fork switch. */
+  readonly allowsFork: boolean
+  /** Plugin endpoints the mounted plugins offer. */
+  readonly offered: readonly ViewerCapabilityGroup[]
+  /** Endpoint tier on hand. */
+  readonly tier: CapabilityTier
+  /** Whether the stored endpoints match no tier, so the picker states an unmatched selection. */
+  readonly stale?: boolean
+  /** Whether every control is unavailable. */
+  readonly disabled: boolean
+  /** Base id the session permission tabs derive from. */
+  readonly sessionModeControlId: string
+  /** Base id the endpoint tabs derive from. */
+  readonly capabilityControlId: string
+  /** Record a session permission pick. */
+  readonly onSessionMode: (mode: ViewerSessionMode) => void
+  /** Record a fork-switch pick. */
+  readonly onAllowsFork: (value: boolean) => void
+  /** Record an endpoint tier pick. */
+  readonly onTier: (tier: CapabilityTier) => void
+}
+
+/**
+ * Render the fields both creating and editing a share present.
+ * @param props - Values, callbacks, control ids, and localized copy.
+ * @returns The shared permission rows.
+ */
+export function SharePermissionFields({
+  sessionMode, modeUnsupported = false, allowsFork, offered, tier, stale = false, disabled,
+  sessionModeControlId, capabilityControlId, onSessionMode, onAllowsFork, onTier, t,
+}: SharePermissionFieldsProps): ReactNode {
+  return (
+    <>
+      <div className={css.row}>
+        <span className={css.rowLabel}>{t('dialog.sessionMode')}</span>
+        {sessionMode === undefined ? (
+          <span className={css.testWarn}>{t('dialog.permissions.modeUnsupported')}</span>
+        ) : (
+          <SegmentedControl
+            id={sessionModeControlId}
+            label={t('dialog.sessionMode')}
+            value={sessionMode}
+            disabled={disabled}
+            options={sessionModeOptions(t)}
+            onChange={onSessionMode}
+          />
+        )}
+      </div>
+      {modeUnsupported || sessionMode === undefined ? null : (
+        <p className={css.hint}>{t(`dialog.sessionMode.hint.${sessionMode}` as const)}</p>
+      )}
+      <div className={css.row}>
+        <span className={css.rowLabel}>{t('dialog.allowsFork')}</span>
+        <Switch
+          checked={allowsFork}
+          disabled={disabled}
+          label={t('dialog.allowsFork')}
+          onChange={onAllowsFork}
+        />
+      </div>
+      <p className={css.hint}>{t('dialog.allowsForkHint')}</p>
+      <div className={css.row}>
+        <span className={css.rowLabel}>{t('dialog.capabilities')}</span>
+        <Switch
+          checked={tier !== 'none'}
+          disabled={disabled || offered.length === 0}
+          label={t('dialog.capabilities')}
+          onChange={(enabled) => {
+            onTier(enabled ? (offered.some(group => group.readable.length > 0) ? 'read' : 'write') : 'none')
+          }}
+        />
+      </div>
+      {offered.length === 0
+        ? <p className={css.hint}>{t('dialog.capabilities.empty')}</p>
+        : (
+          <ShareCapabilitiesPicker
+            offered={offered}
+            tier={tier}
+            stale={stale}
+            disabled={disabled}
+            controlId={capabilityControlId}
+            onPick={onTier}
+            t={t}
+          />
+        )}
+    </>
+  )
+}
diff --git a/packages/experimental/liveshare/src/client/endpoint-classification.ts b/packages/experimental/liveshare/src/client/endpoint-classification.ts
new file mode 100644
index 0000000000..c880912024
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/endpoint-classification.ts
@@ -0,0 +1,40 @@
+/**
+ * Client-face completeness gate for the viewer endpoint classification.
+ *
+ * This module is compiled by the package's Client face, which pulls the production Remote maps in
+ * through the Client assembly. `Extract<keyof TypertRemoteMap, string>` therefore names every endpoint
+ * a shipped Client build can call; an endpoint added without a table row fails this declaration.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/endpoint-classification
+ */
+import type {} from '@deepseek-ai/dsh-api-remotes/client'
+import type {} from '@deepseek-ai/dsh-api-remote-access/remote'
+import type { RemoteEndpoint } from '@deepseek-ai/dsh-api-remote-access/client'
+import type {} from '@deepseek-ai/dsh-cua/remote'
+import type {} from '@deepseek-ai/dsh-experimental-api-speech-to-text/remote'
+import type {} from '@deepseek-ai/dsh-experimental-claude-code-mods/remote'
+import type {} from '@deepseek-ai/dsh-experimental-client-ui-cot-translation/remote'
+import { VIEWER_ENDPOINT_CLASSES, type ViewerEndpointClass } from '../endpoint-classification.ts'
+
+/**
+ * The classification with every production Remote endpoint proven present.
+ *
+ * `satisfies` keeps the table's literal classes; a missing endpoint is a compile error here rather than
+ * a runtime refusal that silently hides a reader surface.
+ */
+export const COMPLETE_VIEWER_ENDPOINT_CLASSES =
+  VIEWER_ENDPOINT_CLASSES satisfies Record<RemoteEndpoint, ViewerEndpointClass>
+
+/** An endpoint the generated map names but the table omits; `never` in a complete build. */
+type UnclassifiedEndpoint = Exclude<RemoteEndpoint, keyof typeof VIEWER_ENDPOINT_CLASSES>
+
+/** A table key the generated map does not name; `never` when the table has no stale rows. */
+type UnknownClassifiedEndpoint = Exclude<keyof typeof VIEWER_ENDPOINT_CLASSES, RemoteEndpoint>
+
+/** Fails the Client face unless `T` is `never`. */
+type AssertNever<T extends never> = T
+
+/** Compile-time proof that every generated endpoint has a class. */
+export type NoUnclassifiedEndpoint = AssertNever<UnclassifiedEndpoint>
+
+/** Compile-time proof that the table has no endpoint this Client build cannot name. */
+export type NoUnknownClassifiedEndpoint = AssertNever<UnknownClassifiedEndpoint>
diff --git a/packages/experimental/liveshare/src/client/index.ts b/packages/experimental/liveshare/src/client/index.ts
new file mode 100644
index 0000000000..d1b776822e
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/index.ts
@@ -0,0 +1,118 @@
+/**
+ * Browser plugin: the owner's Session-scoped Liveshare action, or the viewer page's own surfaces.
+ *
+ * The served viewer page is the owner's own Web shell with every owner plugin, so this one face
+ * decides which half it mounts from the page global the Relay's carrier installs
+ * (`__DSH_LIVESHARE_VIEWER__`): absent on the owner's page, present on a viewer page.
+ *
+ * The owner half mounts the generated `liveshareShares` Remote before it contributes the header
+ * action, because that action and its dialogs address every share-management call through it.
+ */
+
+import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import liveshareSharesRemote from '@deepseek-ai/dsh-experimental-liveshare/remote'
+import type {} from '@deepseek-ai/dsh-api-remotes/client'
+import type {} from '@deepseek-ai/dsh-client-locale/client'
+import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
+import type {} from '@deepseek-ai/dsh-client-ui-renderer/client'
+import type {} from '@deepseek-ai/dsh-client-ui-session/client'
+import type {} from '@deepseek-ai/dsh-client-ui-workspace/client'
+import { LIVESHARE_VIEWER_GLOBAL } from '../viewer-channel.ts'
+import { LiveshareShareAction } from './ShareAction.tsx'
+import type { OwnerShares } from './owner-shares.ts'
+import { forgetOwnerDisplay, rememberOwnerIdentity } from './owner-display.ts'
+import { setManagedShareOpener } from './share-navigation.ts'
+import { de, en, es, fr, ja, NS, pt, ru, zh, type LiveshareKey } from './locales.ts'
+import { SharedSessionOrigin, shareViewerAuthor } from './user-origin.tsx'
+import * as viewerBrand from './viewer-brand.tsx'
+import * as viewerModel from './viewer-model.tsx'
+import * as viewerPermission from './viewer-permission.tsx'
+import * as viewerSession from './viewer-session-plugin.ts'
+import * as viewerSessionRow from './viewer-session-row.tsx'
+import * as viewerSharePath from './viewer-share-path.tsx'
+
+declare module '@deepseek-ai/dsh-client-ui-slots' {
+  interface LocaleNamespaceMap {
+    liveshare: LiveshareKey
+  }
+}
+
+/** Required client services: dictionaries, the Remote carrier, and the header contribution. */
+export const inject = ['slots', 'locale', 'remote']
+
+/** Viewer-page plugins, each mounted with its own service requirements. */
+const VIEWER_PLUGINS = [
+  viewerSession, viewerBrand, viewerModel, viewerPermission, viewerSessionRow, viewerSharePath,
+]
+
+/**
+ * Whether this page is a served viewer page.
+ * @returns True when the Relay's carrier named the share this page presents.
+ */
+function isViewerPage(): boolean {
+  return (globalThis as Record<string, unknown>)[LIVESHARE_VIEWER_GLOBAL] !== undefined
+}
+
+/**
+ * Register Liveshare dictionaries and the shared-session origin seat, then the owner's Session
+ * Header utility or the viewer surfaces.
+ *
+ * The owner Remote is mounted only on the owner page: a viewer Peer is refused every management
+ * method, so a viewer page has nothing to mount it for.
+ * @param ctx - browser context carrying slot, locale, and Remote services.
+ * @returns Disposer releasing the owner Remote when the face unmounts.
+ */
+export async function apply(ctx: ClientContext): Promise<() => Promise<void>> {
+  // The viewer plugins are children of this face, so this one registration outlives every one of them.
+  ctx.effect(() => ctx.locale.register(NS, { zh, en, ja, es, fr, de, ru, pt }), 'liveshare: browser dictionaries')
+  // The shared Session's attributed messages reach both pages through the same durable source, so
+  // one registration supplies Chat's origin seat on either face. Declaration-aware injection makes
+  // this independent of whether Chat's user renderer is already registered.
+  ctx.slots.inject('conversation.chat.user.before', () => ctx.slots.register({
+    name: 'conversation.chat.user.before',
+    locale: NS,
+    select: owner => owner.kind === 'user' ? (shareViewerAuthor(owner.source) ?? null) : null,
+  }, SharedSessionOrigin))
+  if (isViewerPage()) {
+    for (const plugin of VIEWER_PLUGINS) ctx.plugin(plugin)
+    return async () => {}
+  }
+  // Navigation is a workspace service, not a Remote child. The manager still opens the selected
+  // share's dialog when this page has none (or navigation is unavailable).
+  const workspace = ctx.get('uiWorkspace')
+  if (workspace !== undefined) {
+    setManagedShareOpener((sessionId) => { workspace.openSession(sessionId as SessionId) })
+  }
+  const transport = ctx.plugin(async (owner) => {
+    await owner.remote.$mount(liveshareSharesRemote)
+    // The generated namespace only exists after this fiber's own mount; injecting it on a child
+    // scope reads the carrier without making the face wait for a service it creates itself.
+    owner.inject(['remote.liveshareShares'], (scope) => {
+      const shares: OwnerShares = scope.remote.liveshareShares
+      // The transcript's attribution line reads the owner's own display name; a failed read leaves the
+      // durable subject id as its only identity.
+      void rememberOwnerIdentity(shares)
+      ctx.effect(() => () => { forgetOwnerDisplay() }, 'liveshare.ownerDisplay')
+      scope.slots.inject(
+        'conversation.session.header.utilities',
+        () => scope.slots.register({
+          name: 'conversation.session.header.utilities',
+          id: 'liveshare-share',
+          order: 30,
+          locale: NS,
+          inject: () => ({ shares }),
+        }, LiveshareShareAction),
+      )
+    })
+  })
+  await transport
+  return async () => {
+    await transport.dispose()
+    setManagedShareOpener(undefined)
+  }
+}
+
+export type { LiveshareShareActionProps } from './ShareAction.tsx'
+export type { LiveshareShareDialogProps } from './ShareDialog.tsx'
+export type { LiveshareManageSharesDialogProps } from './ManageSharesDialog.tsx'
diff --git a/packages/experimental/liveshare/src/client/locales.ts b/packages/experimental/liveshare/src/client/locales.ts
new file mode 100644
index 0000000000..1153a60737
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/locales.ts
@@ -0,0 +1,1946 @@
+import type { Translate } from '@deepseek-ai/dsh-client-ui-slots'
+
+/** Locale namespace owned by the Liveshare owner-side browser plugin. */
+export const NS = 'liveshare'
+
+/** Simplified-Chinese Liveshare owner copy. */
+export const zh = {
+  'header.action': '分享',
+  'inputOrigin.sharedSession': '来自会话分享【{subjectId}】',
+  'dialog.title': '分享会话',
+  'dialog.done': '完成',
+  'dialog.shareLink': '分享链接',
+  'dialog.sessionMode': '会话权限',
+  'dialog.sessionMode.view': '仅可查看',
+  'dialog.sessionMode.write': '工作区内修改',
+  'dialog.sessionMode.hint.view': '仅可查看：观看者可以读取分享范围内的文件与会话记录，也能向这个会话发消息；所有工具都在只读沙箱中运行，不能写文件。',
+  'dialog.sessionMode.hint.write': '工作区内修改：观看者在可写沙箱里工作——可以在分享范围内修改文件，写入受可写上限约束；分享范围之外的读写都会被拒绝，你的全局设置、凭据与其它会话仍不开放。',
+  'dialog.allowsFork': '允许观看者分叉会话',
+  'dialog.allowsForkHint': '观看者分叉出的会话与源会话权限相同。',
+  'dialog.sessionMode.notGranted': '此 Harness 未回读会话权限：所有者端版本过旧时请先升级，再重新创建分享。',
+  'dialog.permissions': '分享权限',
+  'dialog.permissions.save': '保存修改',
+  'dialog.permissions.saving': '保存中…',
+  'dialog.permissions.saved': '已保存分享权限与插件端点。',
+  'dialog.permissions.failed': '分享权限未保存，请重试。',
+  'dialog.permissions.partial': '会话权限已更新，但插件端点未保存，请重试。',
+  'dialog.permissions.modeUnsupported': '此 Harness 未回读会话权限，不能在这里修改。',
+  'dialog.permissions.unsaved': '有未保存的改动。',
+  'dialog.permissions.discard': '有未保存的改动；再次点击「完成」将丢弃它们。',
+  'dialog.capabilities': '插件端点',
+  'dialog.capabilities.description': '对这个分享统一选一个档位；档位在保存时展开成插件当前声明的全部端点，之后新增的端点不会自动开放。',
+  'dialog.capabilities.none': '不向观看者开放',
+  'dialog.capabilities.count': '已向观看者开放 {count} 个端点',
+  'dialog.capabilities.tier.none': '不可用',
+  'dialog.capabilities.tier.read': '可读',
+  'dialog.capabilities.tier.write': '可写',
+  'dialog.capabilities.summary.read': '只读 · {count} 个端点',
+  'dialog.capabilities.summary.write': '可写 · {readable} 只读 + {writable} 可写',
+  'dialog.capabilities.stale': '当前记录不是整档选择；重新保存会按所选档位覆盖。',
+  'dialog.capabilities.noReadable': '没有插件提供只读端点，因此不能选择「可读」。',
+  'dialog.capabilities.noWritable': '没有插件提供可写端点，因此不能选择「可写」。',
+  'dialog.capabilities.writeHint': '可写端点在被分享会话允许写入时才生效，且在可写分享中具有破坏性。',
+  'dialog.capabilities.empty': '当前没有插件声明可分享端点。',
+  'dialog.capabilities.createFailed': '分享已创建，但插件端点未保存；请到分享权限中重试。',
+  'dialog.linkHelp': '关闭此面板不会停止分享。',
+  'dialog.copyFailed': '未能复制链接。请选中分享链接后手动复制。',
+  'dialog.diagnostics': '连接诊断',
+  'dialog.accessUnavailable': '此分享的访问范围详情暂不可用，已有权限不变。',
+  'dialog.selectedCount': '分享服务已确认 {count} 位所选人员。',
+  'dialog.deploymentAccess': '部署还配置了 {count} 个可访问身份；访问范围不只由此处选择决定。',
+  'dialog.selectedRetired': '这是旧版“指定同事可看”的分享：范围保持不变，新建分享只能选择上面两种方式。',
+  'dialog.description': '创建一个只读 Liveshare 链接：{title}',
+  'dialog.relay': '分享服务地址',
+
+
+  'dialog.relaySaved': '已保存，新的分享将使用该地址。',
+  'dialog.relayInvalid': '请输入以 http:// 或 https:// 开头的完整地址。',
+  'dialog.relayCurrent': '当前生效地址',
+  'dialog.relayUnset': '未设置地址',
+  'dialog.relaySource.unset': '未设置',
+  'dialog.relaySource.saved': '已保存地址',
+  'dialog.relayVerified': '已在该地址验证',
+  'dialog.relayUnverified': '该地址未验证',
+  'dialog.relayReverify': '地址已更换，请在新地址重新登录。',
+  'dialog.relayUnsavedHint': '这个地址尚未保存；保存后才会生效。',
+  'dialog.identity.expired': '登录已过期，请重新登录后再创建分享。',
+  'dialog.identity.unverified': '尚未登录，无法创建分享。',
+  'dialog.identity.relayChanged': '当前登录属于另一个 Relay 地址，请在本地址重新登录。',
+  'dialog.identity.unknown': '登录状态暂时不可用，请稍后重试；登录前不会创建分享。',
+  'dialog.identity.retry': '重试',
+  'dialog.identity.verify': '登录',
+  'dialog.identity.reverify': '重新登录',
+  'dialog.identity.verifyBlocked': '请先保存地址并确认可连接，再登录。',
+  'dialog.identity.loginOpening': '正在发起登录…',
+  'dialog.identity.loginWaiting': '请在打开的窗口中完成登录。',
+  'dialog.identity.loginVerifying': '正在确认登录结果…',
+  'dialog.identity.loginDone': '登录已完成，正在读取状态。',
+  'dialog.identity.loginCancelled': '已取消登录，未保存任何凭据。',
+  'dialog.identity.loginExpired': '这次登录已过期，请重新发起。',
+  'dialog.identity.loginMismatch': '登录回答不属于本次请求，已忽略。',
+  'dialog.identity.loginReplayed': '这次登录已被使用过，请重新发起。',
+  'dialog.identity.loginUnavailable': '无法发起登录：Relay 不可用或该地址尚不支持。',
+  'dialog.identity.loginBlocked': '无法打开登录窗口（可能被浏览器拦截）。请允许弹窗后重试。',
+  'dialog.identity.loginFailed': '登录未完成，请重试。',
+  'dialog.identity.expires': '有效期至 {time}',
+  'dialog.identity.renewed': '已在有效授权内自动续期。',
+  'dialog.identity.relayUnsupported': '当前 Relay 地址还不支持身份认证，请先升级 Relay 后再创建分享；不会创建匿名分享。',
+  'dialog.expiry': '有效期',
+  'dialog.expiry.never': '永不过期',
+  'dialog.expiry.hour': '1 小时',
+  'dialog.expiry.day': '24 小时',
+  'dialog.expiry.week': '7 天',
+  'dialog.expiry.until': '至 {time}',
+  'dialog.linkSharing': '链接分享',
+  'dialog.help': '只分享这个会话；对方能做什么由“会话权限”决定，随时可以在“管理分享”里停止。',
+  'dialog.mode.open': '组织内任何持链接的人可查看',
+  'dialog.mode.selected': '指定同事可看',
+  'dialog.expiry.clear': '改为永不过期',
+  'dialog.create': '创建分享',
+  'dialog.creating': '创建中…',
+  'dialog.cancel': '取消',
+  'dialog.copy': '复制链接',
+  'dialog.copied': '已复制',
+  'dialog.manage': '管理分享',
+  'dialog.hostUnavailable': '无法连接 DSH Liveshare 分享服务。',
+  'dialog.testing': '正在连接分享服务…',
+  'dialog.testOk': 'Relay 连接正常',
+  'dialog.testWarn': 'Relay HTTP 可访问，但注册未完成（服务端未给出原因）；仍可创建，网关会自动重试。',
+  'dialog.testFail': 'Relay 连接失败（服务端未给出原因）。',
+
+
+
+
+  'dialog.addressHint': '请先保存分享服务地址。',
+
+  'dialog.connectivityChecking': '正在测试分享服务地址连通性…',
+
+  'dialog.permissionChecking': '正在校验本机能否在该地址发布分享…',
+  'dialog.permissionOk': '已登录，本机可以发布分享。',
+  'dialog.permissionPending': '需要先校验权限，才能创建分享。',
+  'dialog.permissionFailed': '权限校验未完成（Host 未给出原因）。',
+  'dialog.outgoing': '我分享出去的会话',
+  'dialog.noOutgoing': '还没有分享出去的会话',
+  'dialog.share.online': '在线',
+  'dialog.share.offline': '离线',
+  'dialog.open': '打开',
+  'dialog.stop': '停止分享',
+  'dialog.stopFailed': '停止分享失败，请稍后重试。',
+  'manage.title': '分享管理',
+  'manage.open': '管理',
+  'manage.cancelShare': '取消分享',
+  'manage.description': '查看每个分享的在线状态与访问范围。',
+  'manage.stop.title': '停止分享？',
+  'manage.stop.description': '已发布的链接会立即失效，正在查看的人将无法继续访问。',
+  'manage.stop.acknowledge': '我明白已发布的链接会立即失效',
+  'manage.identityExpired': '登录凭据已过期：只影响新建分享。下列已发布分享不受影响，链接仍可复制、仍可管理。',
+  'manage.loading': '正在加载分享…',
+  'manage.empty': '还没有分享出去的会话。',
+  'manage.unavailable': '无法获取分享列表，显示的是最后一次已知状态。',
+  'manage.refresh': '重新加载',
+  'manage.history': '历史记录',
+  'manage.historyLoading': '正在加载历史记录…',
+  'manage.historyFailed': '历史记录读取失败，请重试。',
+  'manage.expiresAt': '{time} 过期',
+  'manage.expiredAt': '已于 {time} 过期',
+  'manage.sessionMode': '会话权限',
+  'manage.sessionModeSwitch': '设置「{title}」的会话权限',
+  'manage.allowsForkSwitch': '设置「{title}」是否允许观看者分叉会话',
+  'manage.sessionModeUnsupported': '此 Harness 未回读会话权限，无法在这里设置。',
+  'manage.sessionModeFailed': '会话权限未保存，请重试。',
+  'manage.capabilities': '插件端点',
+  'manage.audit.shareCreate': '创建分享',
+  'manage.audit.accessRequest': '收到查看申请',
+  'manage.audit.accessApproved': '审批通过',
+  'manage.audit.accessGrant': '授予查看权限',
+  'manage.audit.accessRevoke': '撤销查看权限',
+  'manage.audit.shareStop': '停止分享',
+  'manage.done': '完成',
+  'viewer.title': 'Liveshare 只读会话',
+  'viewer.sharedBy': '由 {owner} 分享 · {title}',
+  'viewer.readonlyNote': '仅可查看：可以驱动这个会话，但只能在分享范围内读取文件，不能修改内容。',
+  'viewer.writeUnavailableNote': '分享者已授予写入，但这个会话当前无法被驱动；就绪后即可发送消息。',
+  'viewer.model.title': '这个会话正在使用的模型，由分享者决定',
+  'viewer.model.locked': '观看者不能切换模型',
+  'viewer.permission.title': '这份分享的会话权限，由分享者决定',
+  'viewer.permission.locked': '观看者不能自行更改',
+  'viewer.permission.unconfirmed': '尚未确认',
+  'viewer.transcriptLabel': '会话内容（只读）',
+  'viewer.role.user': '用户',
+  'viewer.role.assistant': '助手',
+  'viewer.role.tool': '工具',
+  'viewer.loading': '正在连接会话…',
+  'viewer.empty': '这个会话还没有可显示的内容。',
+  'viewer.reconnecting': '连接中断，正在重试…',
+  'viewer.offline': '分享暂时离线，稍后会自动重连。',
+  'viewer.retry': '立即重试',
+  'viewer.expired': '该分享已过期，不再提供访问。请联系分享者重新分享。',
+  'viewer.revoked': '分享者已停止或撤销你的访问。',
+  'viewer.reauthenticate': '登录状态已失效，请重新登录。',
+  'viewer.reauthenticateAction': '重新登录',
+  'viewer.status.connecting': '正在连接分享…',
+  'viewer.status.invalid': '链接无效，或这条分享已被删除。',
+  'viewer.status.invalidHint': '请检查链接是否完整；也可以找分享者要一条新链接。',
+  'viewer.status.offline': '分享者当前不在线，会自动重连。',
+  'viewer.status.offlineHint': '稍等片刻或点「重试」；长时间仍然离线请联系分享者。',
+  'viewer.status.stopped': '分享者已停止这条分享。',
+  'viewer.status.stoppedHint': '如需继续访问，请联系分享者重新开启。',
+  'viewer.status.expired': '这条分享已过期。',
+  'viewer.status.expiredHint': '请联系分享者重新分享。',
+  'viewer.status.reauthenticate': '登录已过期。',
+  'viewer.status.unavailable': '服务暂时不可用，正在重试。',
+  'viewer.status.unavailableHint': '请稍后重试；持续不可用请联系分享者或稍后再来。',
+  'viewer.action.reload': '刷新',
+  'viewer.action.retry': '重试',
+  'viewer.action.signIn': '重新登录',
+  'viewer.action.directory': '回到分享列表',
+  'viewer.expiresAt': '有效期至 {time}',
+  'viewer.picker.ownerUnknown': '未知分享者',
+  'viewer.picker.version': 'DSH',
+  'viewer.picker.groupCount': '{count} 个分享',
+  'viewer.picker.online': '在线',
+  'viewer.picker.offline': '离线',
+  'viewer.picker.subjectLabel': '主体 …{label}',
+  'viewer.picker.historical': '历史未验证',
+  'viewer.picker.historicalNote': '这些分享创建于身份验证之前，访问范围保持不变。',
+  'viewer.brand': 'LiveShare',
+  'viewer.home': '回到 LiveShare 首页',
+  'viewer.sharedByShort': '由 {owner} 分享',
+  'viewer.relayVersion': 'relay {release}',
+  'viewer.refused': 'liveshare：{subject} 被拒绝（{status}）',
+  'viewer.relayAnswered': 'liveshare：中继返回 {status}',
+  'viewer.relaySilent': 'liveshare：中继未对 {subject} 返回内容',
+  'viewer.unreachable': 'liveshare：{subject} 未能送达中继，正在重试',
+  'viewer.noAnswer': '无应答',
+  'viewer.row.fork': '分叉会话',
+  'viewer.row.forkSource': '来自「{title}」的分支',
+  'viewer.row.branchRefused': '未能完成分支：{reason}',
+  'viewer.sharePath.unavailable': '此页面无法打开工作区文件：分享提供的是文件路径，不是文件内容。',
+  'viewer.reason.fork-not-permitted': '分享者未允许分支此会话',
+  'viewer.reason.fork-not-implemented': '此部署尚不支持分支',
+  'viewer.reason.write-not-implemented': '此部署尚不支持写入',
+  'viewer.reason.share-not-found': '该分享已不存在',
+  'viewer.reason.share-stopped': '分享已停止',
+  'viewer.reason.share-expired': '分享已过期',
+  'viewer.reason.source-session-mismatch': '分支请求指向的会话不是该分享的会话',
+  'viewer.reason.fork-operation-conflict': '这次分支请求指定的前缀与之前那次不同，未再新建会话',
+  'viewer.reason.fork-enforcement-failed': '分支会话已创建，但沙箱限制安装失败，无法使用',
+  'viewer.reason.mode-view': '分享者已把此分享改为仅可查看',
+  'viewer.reason.unconfirmed': '无法确认该分享的当前状态，确认前保持只读',
+  'viewer.reason.fork-viewer-unknown': '中继未确认你的身份，无法完成分支',
+  'viewer.reason.fork-unknown-child': '此会话不是分享产生的分支',
+  'viewer.reason.fork-viewer-mismatch': '该分支属于其他观看者',
+  'viewer.reason.fork-source-revoked': '该分支来源的分享已不可用',
+  'viewer.reason.fork-ceiling-uninstalled': '此 Host 尚未安装只读执行上限',
+  'viewer.reason.fork-prepare-failed': 'Host 未能准备好此分支，本次操作没有执行',
+  'viewer.reason.share-not-writable': '分享者已不允许写入此会话',
+  'viewer.reason.source-write-unavailable': '此 Host 未能限制共享会话的执行，因此无法驱动它',
+  'viewer.reason.prompt-identity-missing': '这次发送没有可供署名的请求标识，Host 没有执行',
+  'viewer.reason.viewer-not-authorized': '你的账号已无权访问该分享',
+  'viewer.reason.liveshare/read-only': '这个会话不在你持有的分享范围内，未写入',
+} as const
+
+/** English Liveshare owner copy. */
+export const en: Record<keyof typeof zh, string> = {
+  'header.action': 'Share',
+  'inputOrigin.sharedSession': 'From a shared session [{subjectId}]',
+  'dialog.title': 'Share session',
+  'dialog.done': 'Done',
+  'dialog.shareLink': 'Share link',
+  'dialog.sessionMode': 'Session permission',
+  'dialog.sessionMode.view': 'Read only',
+  'dialog.sessionMode.write': 'Workspace write',
+  'dialog.sessionMode.hint.view': 'Read only: viewers read files and the session record within the share\'s scope and can message the session, but every tool runs in a read-only sandbox and no file can be written.',
+  'dialog.sessionMode.hint.write': 'Workspace write: the viewer works in a bounded writable sandbox — it modifies files inside the share’s scope under the writable ceiling; reads and writes beyond that scope are refused, and your global settings, credentials, and other Sessions stay closed.',
+  'dialog.allowsFork': 'Allow viewers to fork the session',
+  'dialog.allowsForkHint': 'Forked sessions keep the same permissions as the source session.',
+  'dialog.sessionMode.notGranted': 'This Harness did not report the session permission back: an older owner build needs an upgrade before the share can carry it.',
+  'dialog.permissions': 'Share permissions',
+  'dialog.permissions.save': 'Save changes',
+  'dialog.permissions.saving': 'Saving…',
+  'dialog.permissions.saved': 'Share permissions and plugin endpoints saved.',
+  'dialog.permissions.failed': 'The share permissions were not saved. Try again.',
+  'dialog.permissions.partial': 'The session permission was updated, but the plugin endpoints were not saved. Try again.',
+  'dialog.permissions.modeUnsupported': 'This Harness did not report a session permission, so it cannot be changed here.',
+  'dialog.permissions.unsaved': 'Unsaved changes.',
+  'dialog.permissions.discard': 'Unsaved changes; choosing Done again discards them.',
+  'dialog.capabilities': 'Plugin endpoints',
+  'dialog.capabilities.description': 'Choose one tier for this share; the tier expands at save time into the endpoints the plugins declare now, so endpoints they add later stay closed.',
+  'dialog.capabilities.none': 'Not open to viewers',
+  'dialog.capabilities.count': 'Endpoints open to viewers: {count}',
+  'dialog.capabilities.tier.none': 'Unavailable',
+  'dialog.capabilities.tier.read': 'Read-only',
+  'dialog.capabilities.tier.write': 'Writable',
+  'dialog.capabilities.summary.read': 'Read-only · {count} endpoints',
+  'dialog.capabilities.summary.write': 'Writable · {readable} read-only + {writable} writable',
+  'dialog.capabilities.stale': 'The saved selection is not one whole tier; saving again replaces it with the tier you pick.',
+  'dialog.capabilities.noReadable': 'No plugin offers a read-only endpoint, so Read-only cannot be chosen.',
+  'dialog.capabilities.noWritable': 'No plugin offers a writable endpoint, so Writable cannot be chosen.',
+  'dialog.capabilities.writeHint': 'A writable endpoint takes effect only when the shared Session allows writing, and is destructive inside a writable share.',
+  'dialog.capabilities.empty': 'No plugin currently declares endpoints to share.',
+  'dialog.capabilities.createFailed': 'The share was created, but its plugin endpoints were not saved; retry in Share permissions.',
+  'dialog.linkHelp': 'Closing this panel does not stop the share.',
+  'dialog.copyFailed': 'Could not copy the link. Select the share link and copy it manually.',
+  'dialog.diagnostics': 'Connection details',
+  'dialog.accessUnavailable': 'Access details for this share are unavailable. Existing permissions are unchanged.',
+  'dialog.selectedCount': 'Selected people confirmed: {count}.',
+  'dialog.deploymentAccess': 'Deployment-authorized identities: {count}. Selection is not the only access rule.',
+  'dialog.selectedRetired': 'This share keeps its older "specific colleagues" scope; new shares offer only the two modes above.',
+  'dialog.description': 'Create a read-only Liveshare link for {title}',
+  'dialog.relay': 'Share service address',
+
+
+  'dialog.relaySaved': 'Saved. New shares use this address.',
+  'dialog.relayInvalid': 'Enter a full address starting with http:// or https://.',
+  'dialog.relayCurrent': 'Current address',
+  'dialog.relayUnset': 'No address set',
+  'dialog.relaySource.unset': 'Not set',
+  'dialog.relaySource.saved': 'Saved address',
+  'dialog.relayVerified': 'Verified on this address',
+  'dialog.relayUnverified': 'Not verified on this address',
+  'dialog.relayReverify': 'The address changed; sign in again on the new address.',
+  'dialog.relayUnsavedHint': 'This address is not saved yet; save it to put it in force.',
+  'dialog.identity.expired': 'Your sign-in has expired. Sign in again before creating a share.',
+  'dialog.identity.unverified': 'You are not signed in, so you cannot create a share.',
+  'dialog.identity.relayChanged': 'The current sign-in belongs to another Relay address. Sign in again on this address.',
+  'dialog.identity.unknown': 'Sign-in status is unavailable right now. Try again later; no share is created before you sign in.',
+  'dialog.identity.retry': 'Retry',
+  'dialog.identity.verify': 'Sign in',
+  'dialog.identity.reverify': 'Sign in again',
+  'dialog.identity.verifyBlocked': 'Save the address and confirm it answers before signing in.',
+  'dialog.identity.loginOpening': 'Starting sign-in…',
+  'dialog.identity.loginWaiting': 'Finish signing in in the window that opened.',
+  'dialog.identity.loginVerifying': 'Confirming the sign-in result…',
+  'dialog.identity.loginDone': 'Signed in; reading the account state.',
+  'dialog.identity.loginCancelled': 'Sign-in cancelled; no credential was saved.',
+  'dialog.identity.loginExpired': 'This sign-in expired; start again.',
+  'dialog.identity.loginMismatch': 'The sign-in answer did not belong to this request and was ignored.',
+  'dialog.identity.loginReplayed': 'This sign-in was already used; start again.',
+  'dialog.identity.loginUnavailable': 'Cannot start sign-in: the Relay is unavailable or this address does not support it.',
+  'dialog.identity.loginBlocked': 'Cannot open the sign-in window (the browser may have blocked it). Allow pop-ups and try again.',
+  'dialog.identity.loginFailed': 'Sign-in did not finish. Try again.',
+  'dialog.identity.expires': 'Valid until {time}',
+  'dialog.identity.renewed': 'Renewed automatically within the granted authorization.',
+  'dialog.identity.relayUnsupported': 'The Relay at this address does not verify identities yet. Upgrade it before creating a share; this page will not create an anonymous one.',
+  'dialog.expiry': 'Expires',
+  'dialog.expiry.never': 'Never',
+  'dialog.expiry.hour': 'In 1 hour',
+  'dialog.expiry.day': 'In 24 hours',
+  'dialog.expiry.week': 'In 7 days',
+  'dialog.expiry.until': 'Until {time}',
+  'dialog.linkSharing': 'Link sharing',
+  'dialog.help': 'Shares this Session only; the session permission decides what the viewer may do, and you can stop it any time in Manage shares.',
+  'dialog.mode.open': 'Anyone in the organization with the link',
+  'dialog.mode.selected': 'Specific colleagues',
+  'dialog.expiry.clear': 'Never expires',
+  'dialog.create': 'Create share',
+  'dialog.creating': 'Creating…',
+  'dialog.cancel': 'Cancel',
+  'dialog.copy': 'Copy link',
+  'dialog.copied': 'Copied',
+  'dialog.manage': 'Manage shares',
+  'dialog.hostUnavailable': 'Cannot reach the DSH Liveshare share service.',
+  'dialog.testing': 'Connecting to the share service…',
+  'dialog.testOk': 'Relay connection OK',
+  'dialog.testWarn': 'Relay HTTP is reachable but registration did not finish and the Host reported no reason. You can still create the share; the gateway retries.',
+  'dialog.testFail': 'Relay connection failed (the Host reported no reason).',
+
+
+
+
+  'dialog.addressHint': 'Save the share service address first.',
+
+  'dialog.connectivityChecking': 'Testing whether the share service address answers…',
+
+  'dialog.permissionChecking': 'Checking whether this host may publish at this address…',
+  'dialog.permissionOk': 'Signed in; this host can publish shares.',
+  'dialog.permissionPending': 'This address must be checked before a share can be created.',
+  'dialog.permissionFailed': 'The permission check did not finish (the Host reported no reason).',
+  'dialog.outgoing': 'Shared by me',
+  'dialog.noOutgoing': 'No shared sessions yet',
+  'dialog.share.online': 'Online',
+  'dialog.share.offline': 'Offline',
+  'dialog.open': 'Open',
+  'dialog.stop': 'Stop sharing',
+  'dialog.stopFailed': 'Failed to stop sharing. Try again.',
+  'manage.title': 'Share management',
+  'manage.open': 'Manage',
+  'manage.cancelShare': 'Cancel share',
+  'manage.description': 'View the online state and access scope of every share.',
+  'manage.stop.title': 'Stop sharing?',
+  'manage.stop.description': 'The published link stops working immediately, and anyone viewing it loses access.',
+  'manage.stop.acknowledge': 'I understand the published link stops working immediately',
+  'manage.identityExpired': 'This sign-in has expired, which blocks creating new shares only. The shares published below are unaffected: their links still copy and stay manageable.',
+  'manage.loading': 'Loading shares…',
+  'manage.empty': 'No shared sessions yet.',
+  'manage.unavailable': 'Could not load shares. Showing the last known state.',
+  'manage.refresh': 'Reload',
+  'manage.history': 'History',
+  'manage.historyLoading': 'Loading history…',
+  'manage.historyFailed': 'Could not load history. Try again.',
+  'manage.expiresAt': 'Expires {time}',
+  'manage.expiredAt': 'Expired {time}',
+  'manage.sessionMode': 'Session permission',
+  'manage.sessionModeSwitch': 'Session permission for “{title}”',
+  'manage.allowsForkSwitch': 'Whether viewers may fork “{title}”',
+  'manage.sessionModeUnsupported': 'This Harness did not report a session permission, so it cannot be set here.',
+  'manage.sessionModeFailed': 'The session permission was not saved. Try again.',
+  'manage.capabilities': 'Plugin endpoints',
+  'manage.audit.shareCreate': 'Share created',
+  'manage.audit.accessRequest': 'View access requested',
+  'manage.audit.accessApproved': 'Request approved',
+  'manage.audit.accessGrant': 'View access granted',
+  'manage.audit.accessRevoke': 'View access revoked',
+  'manage.audit.shareStop': 'Sharing stopped',
+  'manage.done': 'Done',
+  'viewer.title': 'Liveshare read-only session',
+  'viewer.sharedBy': 'Shared by {owner} · {title}',
+  'viewer.readonlyNote': 'Read only: you can drive this Session, but you read files inside the share’s scope only and modify nothing.',
+  'viewer.writeUnavailableNote': 'The owner granted writing, but this session cannot be driven right now; sending becomes available once it is prepared.',
+  'viewer.model.title': 'The model this Session runs on, chosen by the owner who shared it',
+  'viewer.model.locked': 'Viewers cannot switch the model',
+  'viewer.permission.title': 'The session permission this share carries, set by the owner',
+  'viewer.permission.locked': 'Viewers cannot change this themselves',
+  'viewer.permission.unconfirmed': 'Not confirmed yet',
+  'viewer.transcriptLabel': 'Session content (read-only)',
+  'viewer.role.user': 'User',
+  'viewer.role.assistant': 'Assistant',
+  'viewer.role.tool': 'Tool',
+  'viewer.loading': 'Connecting to the session…',
+  'viewer.empty': 'This session has no content to show yet.',
+  'viewer.reconnecting': 'Connection dropped, retrying…',
+  'viewer.offline': 'The share is offline. It reconnects automatically.',
+  'viewer.retry': 'Retry now',
+  'viewer.expired': 'This share expired and no longer grants access. Ask the owner to share again.',
+  'viewer.revoked': 'The owner stopped sharing or revoked your access.',
+  'viewer.reauthenticate': 'Your sign-in expired. Please sign in again.',
+  'viewer.reauthenticateAction': 'Sign in again',
+  'viewer.status.connecting': 'Connecting to the share…',
+  'viewer.status.invalid': 'This link is not valid, or that share was deleted.',
+  'viewer.status.invalidHint': 'Check that the link is complete, or ask the owner for a new one.',
+  'viewer.status.offline': 'The owner is offline right now; this page reconnects automatically.',
+  'viewer.status.offlineHint': 'Wait a moment or choose Retry; if it stays offline, contact the owner.',
+  'viewer.status.stopped': 'The owner stopped this share.',
+  'viewer.status.stoppedHint': 'Ask the owner to turn it back on if you still need access.',
+  'viewer.status.expired': 'This share expired.',
+  'viewer.status.expiredHint': 'Ask the owner to share the session again.',
+  'viewer.status.reauthenticate': 'Your sign-in expired.',
+  'viewer.status.unavailable': 'The share service is unavailable right now; retrying.',
+  'viewer.status.unavailableHint': 'Try again shortly; if it stays unavailable, come back later.',
+  'viewer.action.reload': 'Reload',
+  'viewer.action.retry': 'Retry',
+  'viewer.action.signIn': 'Sign in again',
+  'viewer.action.directory': 'Back to shares',
+  'viewer.expiresAt': 'Access until {time}',
+  'viewer.picker.ownerUnknown': 'Unknown owner',
+  'viewer.picker.version': 'DSH',
+  'viewer.picker.groupCount': '{count} shares',
+  'viewer.picker.online': 'Online',
+  'viewer.picker.offline': 'Offline',
+  'viewer.picker.subjectLabel': 'subject …{label}',
+  'viewer.picker.historical': 'Unverified history',
+  'viewer.picker.historicalNote': 'These shares predate verified identities; their access is unchanged.',
+  'viewer.brand': 'LiveShare',
+  'viewer.home': 'Back to LiveShare home',
+  'viewer.sharedByShort': 'Shared by {owner}',
+  'viewer.relayVersion': 'relay {release}',
+  'viewer.refused': 'liveshare: {subject} was refused with {status}',
+  'viewer.relayAnswered': 'liveshare: the Relay answered {status}',
+  'viewer.relaySilent': 'liveshare: the Relay answered nothing for {subject}',
+  'viewer.unreachable': 'liveshare: {subject} did not reach the Relay, retrying',
+  'viewer.noAnswer': 'no answer',
+  'viewer.row.fork': 'Fork session',
+  'viewer.row.forkSource': 'Forked from “{title}”',
+  'viewer.row.branchRefused': 'Could not complete the branch: {reason}',
+  'viewer.sharePath.unavailable': 'This page cannot open workspace files: a share hands over file paths, not file contents.',
+  'viewer.reason.fork-not-permitted': 'The owner does not allow branching this Session',
+  'viewer.reason.fork-not-implemented': 'This deployment does not support branching yet',
+  'viewer.reason.write-not-implemented': 'This deployment does not support writing yet',
+  'viewer.reason.share-not-found': 'That share no longer exists',
+  'viewer.reason.share-stopped': 'Sharing stopped',
+  'viewer.reason.share-expired': 'The share expired',
+  'viewer.reason.source-session-mismatch': 'The branch named a different Session than the share carries',
+  'viewer.reason.fork-operation-conflict': 'This branch request named a different prefix than the earlier one, so no new Session was created',
+  'viewer.reason.fork-enforcement-failed': 'The branch Session was created, but its sandbox limits could not be installed, so it cannot be used',
+  'viewer.reason.mode-view': 'The owner set this share to read only',
+  'viewer.reason.unconfirmed': 'This share\u2019s current state could not be confirmed; it stays read-only until it is',
+  'viewer.reason.fork-viewer-unknown': 'The Relay did not confirm your identity, so the branch cannot be created',
+  'viewer.reason.fork-unknown-child': 'This Session is not a branch of a share',
+  'viewer.reason.fork-viewer-mismatch': 'That branch belongs to another viewer',
+  'viewer.reason.fork-source-revoked': 'The share this branch came from is no longer active',
+  'viewer.reason.fork-ceiling-uninstalled': 'This Host has not installed the read-only execution limits',
+  'viewer.reason.fork-prepare-failed': 'The Host could not prepare this branch, so this action did not run',
+  'viewer.reason.share-not-writable': 'The owner does not allow writing this Session',
+  'viewer.reason.source-write-unavailable': 'This Host could not confine the shared Session, so it cannot drive it',
+  'viewer.reason.prompt-identity-missing': 'This send carried no request identity to attribute, so the Host did not run it',
+  'viewer.reason.viewer-not-authorized': 'Your account no longer has access to this share',
+  'viewer.reason.liveshare/read-only': 'This Session is outside the share you hold, so it was not written',
+}
+
+/** Japanese Liveshare owner copy. */
+export const ja: Record<keyof typeof zh, string> = {
+  'header.action': '共有',
+  'inputOrigin.sharedSession': '共有セッションから【{subjectId}】',
+  'dialog.title': 'セッションを共有',
+  'dialog.done': '完了',
+  'dialog.shareLink': '共有リンク',
+  'dialog.sessionMode': 'セッション権限',
+  'dialog.sessionMode.view': '閲覧のみ',
+  'dialog.sessionMode.write': 'ワークスペース内の変更',
+  'dialog.sessionMode.hint.view': '閲覧のみ：視聴者は共有範囲内のファイルとセッション記録を読み、セッションにメッセージを送れます。すべてのツールは読み取り専用のサンドボックスで動作し、ファイルへの書き込みはできません。',
+  'dialog.sessionMode.hint.write': 'ワークスペース内の変更：ビューアーは書き込み可能なサンドボックスで作業します。共有範囲内のファイルを変更でき、書き込みは上限の範囲内に収まります。共有範囲外の読み取りと書き込みは拒否され、グローバル設定、認証情報、その他のセッションは引き続き非公開です。',
+  'dialog.allowsFork': '視聴者によるセッションの分岐を許可',
+  'dialog.allowsForkHint': '視聴者が分岐したセッションは、元のセッションと同じ権限を持ちます。',
+  'dialog.sessionMode.notGranted': 'この Harness はセッション権限を返しませんでした。オーナー側のバージョンが古い場合は、先にアップグレードしてから共有を作り直してください。',
+  'dialog.permissions': '共有の権限',
+  'dialog.permissions.save': '変更を保存',
+  'dialog.permissions.saving': '保存中…',
+  'dialog.permissions.saved': '共有の権限とプラグインのエンドポイントを保存しました。',
+  'dialog.permissions.failed': '共有の権限を保存できませんでした。もう一度お試しください。',
+  'dialog.permissions.partial': 'セッション権限は更新されましたが、プラグインのエンドポイントは保存されませんでした。もう一度お試しください。',
+  'dialog.permissions.modeUnsupported': 'この Harness はセッション権限を返さないため、ここでは変更できません。',
+  'dialog.permissions.unsaved': '未保存の変更があります。',
+  'dialog.permissions.discard': '未保存の変更があります。「完了」をもう一度押すと破棄されます。',
+  'dialog.capabilities': 'プラグインのエンドポイント',
+  'dialog.capabilities.description': 'この共有には 1 つの段階を選びます。段階は保存時に、プラグインが現在宣言しているエンドポイントへ展開されます。後から追加されたエンドポイントは自動的には公開されません。',
+  'dialog.capabilities.none': 'ビューアーに公開しない',
+  'dialog.capabilities.count': 'ビューアーに公開中のエンドポイント：{count} 件',
+  'dialog.capabilities.tier.none': '利用不可',
+  'dialog.capabilities.tier.read': '読み取り可能',
+  'dialog.capabilities.tier.write': '書き込み可能',
+  'dialog.capabilities.summary.read': '読み取り専用 · {count} 件のエンドポイント',
+  'dialog.capabilities.summary.write': '書き込み可能 · 読み取り専用 {readable} 件 + 書き込み可能 {writable} 件',
+  'dialog.capabilities.stale': '現在の記録は 1 つの段階の選択になっていません。もう一度保存すると、選択した段階で上書きされます。',
+  'dialog.capabilities.noReadable': '読み取り専用のエンドポイントを提供するプラグインがないため、「読み取り可能」は選べません。',
+  'dialog.capabilities.noWritable': '書き込み可能なエンドポイントを提供するプラグインがないため、「書き込み可能」は選べません。',
+  'dialog.capabilities.writeHint': '書き込み可能なエンドポイントは、共有したセッションが書き込みを許可しているときだけ有効になり、書き込み可能な共有では破壊的です。',
+  'dialog.capabilities.empty': '共有できるエンドポイントを宣言しているプラグインはありません。',
+  'dialog.capabilities.createFailed': '共有は作成されましたが、プラグインのエンドポイントを保存できませんでした。共有権限で再試行してください。',
+  'dialog.linkHelp': 'このパネルを閉じても共有は停止しません。',
+  'dialog.copyFailed': 'リンクをコピーできませんでした。共有リンクを選択して手動でコピーしてください。',
+  'dialog.diagnostics': '接続の診断',
+  'dialog.accessUnavailable': 'この共有のアクセス範囲の詳細は現在利用できません。既存の権限は変わりません。',
+  'dialog.selectedCount': '選択した {count} 人を共有サービスが確認しました。',
+  'dialog.deploymentAccess': 'このデプロイには他に {count} 個のアクセス可能な ID が設定されています。アクセス範囲はここの選択だけでは決まりません。',
+  'dialog.selectedRetired': 'これは旧版の「特定の同僚が閲覧可能」な共有です。範囲はそのままで、新しい共有では上記の 2 つの方式だけを選べます。',
+  'dialog.description': '読み取り専用の Liveshare リンクを作成します：{title}',
+  'dialog.relay': '共有サービスのアドレス',
+
+
+  'dialog.relaySaved': '保存しました。新しい共有はこのアドレスを使います。',
+  'dialog.relayInvalid': 'http:// または https:// で始まる完全なアドレスを入力してください。',
+  'dialog.relayCurrent': '現在有効なアドレス',
+  'dialog.relayUnset': 'アドレス未設定',
+  'dialog.relaySource.unset': '未設定',
+  'dialog.relaySource.saved': '保存済みアドレス',
+  'dialog.relayVerified': 'このアドレスで確認済み',
+  'dialog.relayUnverified': 'このアドレスでは未確認',
+  'dialog.relayReverify': 'アドレスが変更されました。新しいアドレスで再度サインインしてください。',
+  'dialog.relayUnsavedHint': 'このアドレスはまだ保存されていません。保存すると有効になります。',
+  'dialog.identity.expired': 'サインインの有効期限が切れました。共有を作成する前に再度サインインしてください。',
+  'dialog.identity.unverified': 'サインインしていないため、共有を作成できません。',
+  'dialog.identity.relayChanged': '現在のサインインは別の Relay アドレスに属しています。このアドレスで再度サインインしてください。',
+  'dialog.identity.unknown': 'サインイン状態を取得できません。後でもう一度お試しください。サインインするまで共有は作成されません。',
+  'dialog.identity.retry': '再試行',
+  'dialog.identity.verify': 'サインイン',
+  'dialog.identity.reverify': '再サインイン',
+  'dialog.identity.verifyBlocked': '先にアドレスを保存し、接続できることを確認してからサインインしてください。',
+  'dialog.identity.loginOpening': 'サインインを開始しています…',
+  'dialog.identity.loginWaiting': '開いたウィンドウでサインインを完了してください。',
+  'dialog.identity.loginVerifying': 'サインイン結果を確認しています…',
+  'dialog.identity.loginDone': 'サインインが完了しました。状態を読み取っています。',
+  'dialog.identity.loginCancelled': 'サインインをキャンセルしました。認証情報は保存されていません。',
+  'dialog.identity.loginExpired': 'このサインインは期限切れです。もう一度開始してください。',
+  'dialog.identity.loginMismatch': 'サインインの応答がこのリクエストのものではないため、無視しました。',
+  'dialog.identity.loginReplayed': 'このサインインは既に使用されています。もう一度開始してください。',
+  'dialog.identity.loginUnavailable': 'サインインを開始できません。Relay が利用できないか、このアドレスが未対応です。',
+  'dialog.identity.loginBlocked': 'サインインウィンドウを開けません（ブラウザにブロックされた可能性があります）。ポップアップを許可して再試行してください。',
+  'dialog.identity.loginFailed': 'サインインが完了しませんでした。もう一度お試しください。',
+  'dialog.identity.expires': '有効期限：{time}',
+  'dialog.identity.renewed': '有効な認可の範囲内で自動的に更新されました。',
+  'dialog.identity.relayUnsupported': '現在の Relay アドレスはまだ ID 認証に対応していません。共有を作成する前に Relay をアップグレードしてください。匿名の共有は作成されません。',
+  'dialog.expiry': '有効期間',
+  'dialog.expiry.never': '無期限',
+  'dialog.expiry.hour': '1 時間',
+  'dialog.expiry.day': '24 時間',
+  'dialog.expiry.week': '7 日間',
+  'dialog.expiry.until': '{time} まで',
+  'dialog.linkSharing': 'リンク共有',
+  'dialog.help': 'このセッションだけを共有します。ビューアーができることは「セッション権限」で決まり、「共有の管理」からいつでも停止できます。',
+  'dialog.mode.open': '組織内でリンクを持つ人は誰でも閲覧可能',
+  'dialog.mode.selected': '特定の同僚のみ閲覧可能',
+  'dialog.expiry.clear': '期限なしに変更',
+  'dialog.create': '共有を作成',
+  'dialog.creating': '作成中…',
+  'dialog.cancel': 'キャンセル',
+  'dialog.copy': 'リンクをコピー',
+  'dialog.copied': 'コピーしました',
+  'dialog.manage': '共有の管理',
+  'dialog.hostUnavailable': 'DSH Liveshare の共有サービスに接続できません。',
+  'dialog.testing': '共有サービスに接続しています…',
+  'dialog.testOk': 'Relay の接続は正常です',
+  'dialog.testWarn': 'Relay の HTTP には到達できますが、登録が完了していません（サーバーから理由は返されていません）。共有は作成でき、ゲートウェイが自動的に再試行します。',
+  'dialog.testFail': 'Relay への接続に失敗しました（サーバーから理由は返されていません）。',
+
+
+
+
+  'dialog.addressHint': '先に共有サービスのアドレスを保存してください。',
+
+  'dialog.connectivityChecking': '共有サービスアドレスへの接続を確認しています…',
+
+  'dialog.permissionChecking': 'このマシンがこのアドレスで共有を公開できるかを確認しています…',
+  'dialog.permissionOk': 'サインイン済みで、このホストは共有を公開できます。',
+  'dialog.permissionPending': '共有を作成する前に権限を確認する必要があります。',
+  'dialog.permissionFailed': '権限の確認が完了しませんでした（Host から理由は返されていません）。',
+  'dialog.outgoing': '自分が共有したセッション',
+  'dialog.noOutgoing': '共有したセッションはまだありません',
+  'dialog.share.online': 'オンライン',
+  'dialog.share.offline': 'オフライン',
+  'dialog.open': '開く',
+  'dialog.stop': '共有を停止',
+  'dialog.stopFailed': '共有を停止できませんでした。しばらくしてから再試行してください。',
+  'manage.title': '共有の管理',
+  'manage.open': '管理',
+  'manage.cancelShare': '共有をキャンセル',
+  'manage.description': '各共有のオンライン状態とアクセス範囲を確認します。',
+  'manage.stop.title': '共有を停止しますか？',
+  'manage.stop.description': '公開済みのリンクはすぐに無効になり、閲覧中の人はアクセスできなくなります。',
+  'manage.stop.acknowledge': '公開済みのリンクがすぐに無効になることを理解しました',
+  'manage.identityExpired': 'サインインの資格情報が期限切れです。影響するのは新しい共有の作成だけです。以下に公開済みの共有は影響を受けず、リンクのコピーと管理は引き続き行えます。',
+  'manage.loading': '共有を読み込んでいます…',
+  'manage.empty': '共有したセッションはまだありません。',
+  'manage.unavailable': '共有の一覧を取得できません。最後に判明している状態を表示しています。',
+  'manage.refresh': '再読み込み',
+  'manage.history': '履歴',
+  'manage.historyLoading': '履歴を読み込んでいます…',
+  'manage.historyFailed': '履歴を読み取れませんでした。もう一度お試しください。',
+  'manage.expiresAt': '{time} に期限切れ',
+  'manage.expiredAt': '{time} に期限切れになりました',
+  'manage.sessionMode': 'セッション権限',
+  'manage.sessionModeSwitch': '「{title}」のセッション権限を設定',
+  'manage.allowsForkSwitch': '「{title}」でビューアーの分岐を許可するかを設定',
+  'manage.sessionModeUnsupported': 'この Harness はセッション権限を返さないため、ここでは設定できません。',
+  'manage.sessionModeFailed': 'セッション権限を保存できませんでした。もう一度お試しください。',
+  'manage.capabilities': 'プラグインのエンドポイント',
+  'manage.audit.shareCreate': '共有を作成',
+  'manage.audit.accessRequest': '閲覧リクエストを受信',
+  'manage.audit.accessApproved': 'リクエストを承認',
+  'manage.audit.accessGrant': '閲覧権限を付与',
+  'manage.audit.accessRevoke': '閲覧権限を取り消し',
+  'manage.audit.shareStop': '共有を停止',
+  'manage.done': '完了',
+  'viewer.title': 'Liveshare の読み取り専用セッション',
+  'viewer.sharedBy': '{owner} が共有 · {title}',
+  'viewer.readonlyNote': '閲覧のみ：このセッションを操作できますが、共有範囲内のファイルを読み取るだけで、内容は変更できません。',
+  'viewer.writeUnavailableNote': 'オーナーは書き込みを許可しましたが、このセッションは現在操作できません。準備ができるとメッセージを送信できます。',
+  'viewer.model.title': 'このセッションが使うモデル（共有したオーナーが決定）',
+  'viewer.model.locked': 'ビューアーはモデルを切り替えられません',
+  'viewer.permission.title': 'この共有のセッション権限（オーナーが設定）',
+  'viewer.permission.locked': 'ビューアー自身は変更できません',
+  'viewer.permission.unconfirmed': '未確認',
+  'viewer.transcriptLabel': 'セッションの内容（読み取り専用）',
+  'viewer.role.user': 'ユーザー',
+  'viewer.role.assistant': 'アシスタント',
+  'viewer.role.tool': 'ツール',
+  'viewer.loading': 'セッションに接続しています…',
+  'viewer.empty': 'このセッションには表示できる内容がまだありません。',
+  'viewer.reconnecting': '接続が切断されました。再試行しています…',
+  'viewer.offline': '共有は一時的にオフラインです。後で自動的に再接続します。',
+  'viewer.retry': 'すぐに再試行',
+  'viewer.expired': 'この共有は期限切れで、アクセスは提供されません。共有した人に再共有を依頼してください。',
+  'viewer.revoked': '共有した人が共有を停止したか、あなたのアクセスを取り消しました。',
+  'viewer.reauthenticate': 'サインインの状態が無効になりました。もう一度サインインしてください。',
+  'viewer.reauthenticateAction': '再サインイン',
+  'viewer.status.connecting': '共有に接続しています…',
+  'viewer.status.invalid': 'リンクが無効か、この共有は削除されました。',
+  'viewer.status.invalidHint': 'リンクが完全か確認してください。共有した人に新しいリンクを依頼することもできます。',
+  'viewer.status.offline': '共有した人は現在オフラインです。自動的に再接続します。',
+  'viewer.status.offlineHint': 'しばらく待つか「再試行」を押してください。長時間オフラインのままなら共有した人に連絡してください。',
+  'viewer.status.stopped': '共有した人がこの共有を停止しました。',
+  'viewer.status.stoppedHint': '引き続きアクセスが必要な場合は、共有した人に再開を依頼してください。',
+  'viewer.status.expired': 'この共有は期限切れです。',
+  'viewer.status.expiredHint': '共有した人に再度共有を依頼してください。',
+  'viewer.status.reauthenticate': 'サインインの有効期限が切れました。',
+  'viewer.status.unavailable': 'サービスは一時的に利用できません。再試行しています。',
+  'viewer.status.unavailableHint': 'しばらくしてから再試行してください。利用できない状態が続く場合は、後でまた来てください。',
+  'viewer.action.reload': '更新',
+  'viewer.action.retry': '再試行',
+  'viewer.action.signIn': '再サインイン',
+  'viewer.action.directory': '共有一覧に戻る',
+  'viewer.expiresAt': '{time} までアクセス可能',
+  'viewer.picker.ownerUnknown': '不明な共有者',
+  'viewer.picker.version': 'DSH',
+  'viewer.picker.groupCount': '{count} 件の共有',
+  'viewer.picker.online': 'オンライン',
+  'viewer.picker.offline': 'オフライン',
+  'viewer.picker.subjectLabel': 'サブジェクト …{label}',
+  'viewer.picker.historical': '未検証の履歴',
+  'viewer.picker.historicalNote': 'これらの共有は ID 確認より前に作成されたもので、アクセス範囲は変わりません。',
+  'viewer.brand': 'LiveShare',
+  'viewer.home': 'LiveShare のホームに戻る',
+  'viewer.sharedByShort': '{owner} が共有',
+  'viewer.relayVersion': 'リレー {release}',
+  'viewer.refused': 'liveshare：{subject} は拒否されました（{status}）',
+  'viewer.relayAnswered': 'liveshare：中継サーバーが {status} を返しました',
+  'viewer.relaySilent': 'liveshare：中継サーバーは {subject} に何も返しませんでした',
+  'viewer.unreachable': 'liveshare：{subject} を中継サーバーへ送信できませんでした。再試行しています',
+  'viewer.noAnswer': '応答なし',
+  'viewer.row.fork': 'セッションを分岐',
+  'viewer.row.forkSource': '「{title}」からの分岐',
+  'viewer.row.branchRefused': '分岐を完了できませんでした：{reason}',
+  'viewer.sharePath.unavailable': 'このページはワークスペースのファイルを開けません。共有が渡すのはファイルの内容ではなくパスです。',
+  'viewer.reason.fork-not-permitted': '共有した人がこのセッションの分岐を許可していません',
+  'viewer.reason.fork-not-implemented': 'このデプロイはまだ分岐に対応していません',
+  'viewer.reason.write-not-implemented': 'このデプロイはまだ書き込みに対応していません',
+  'viewer.reason.share-not-found': 'その共有はすでに存在しません',
+  'viewer.reason.share-stopped': '共有は停止しました',
+  'viewer.reason.share-expired': '共有は期限切れです',
+  'viewer.reason.source-session-mismatch': '分岐リクエストが指すセッションは、この共有のセッションではありません',
+  'viewer.reason.fork-operation-conflict': 'この分岐リクエストのプレフィックスは前回と異なるため、新しいセッションは作成されませんでした',
+  'viewer.reason.fork-enforcement-failed': '分岐セッションは作成されましたが、サンドボックスの制限をインストールできなかったため使用できません',
+  'viewer.reason.mode-view': '共有した人がこの共有を閲覧のみに変更しました',
+  'viewer.reason.unconfirmed': 'この共有の現在の状態を確認できません。確認できるまで読み取り専用のままです',
+  'viewer.reason.fork-viewer-unknown': '中継サーバーがあなたの ID を確認できなかったため、分岐を完了できません',
+  'viewer.reason.fork-unknown-child': 'このセッションは共有から生まれた分岐ではありません',
+  'viewer.reason.fork-viewer-mismatch': 'その分岐は別のビューアーのものです',
+  'viewer.reason.fork-source-revoked': 'この分岐の元になった共有は利用できなくなりました',
+  'viewer.reason.fork-ceiling-uninstalled': 'この Host には読み取り専用の実行上限がまだインストールされていません',
+  'viewer.reason.fork-prepare-failed': 'Host がこの分岐を準備できなかったため、今回の操作は実行されませんでした',
+  'viewer.reason.share-not-writable': '共有した人がこのセッションへの書き込みを許可していません',
+  'viewer.reason.source-write-unavailable': 'この Host は共有セッションの実行を制限できなかったため、操作できません',
+  'viewer.reason.prompt-identity-missing': 'この送信には署名できるリクエスト ID がなかったため、Host は実行しませんでした',
+  'viewer.reason.viewer-not-authorized': 'あなたのアカウントはこの共有へのアクセス権を失いました',
+  'viewer.reason.liveshare/read-only': 'このセッションはあなたが持つ共有の範囲外のため、書き込みは行われませんでした',
+}
+
+/** Spanish Liveshare owner copy. */
+export const es: Record<keyof typeof zh, string> = {
+  'header.action': 'Compartir',
+  'inputOrigin.sharedSession': 'De una sesión compartida [{subjectId}]',
+  'dialog.title': 'Compartir sesión',
+  'dialog.done': 'Listo',
+  'dialog.shareLink': 'Enlace para compartir',
+  'dialog.sessionMode': 'Permiso de la sesión',
+  'dialog.sessionMode.view': 'Solo lectura',
+  'dialog.sessionMode.write': 'Escritura en el espacio de trabajo',
+  'dialog.sessionMode.hint.view': 'Solo lectura: los espectadores leen los archivos y el historial de la sesión dentro del alcance compartido y pueden enviar mensajes a la sesión, pero todas las herramientas se ejecutan en un entorno de solo lectura y no pueden escribir archivos.',
+  'dialog.sessionMode.hint.write': 'Escritura en el espacio de trabajo: el espectador trabaja en un entorno aislado con escritura acotada; modifica archivos dentro del alcance del recurso compartido y bajo el límite de escritura; las lecturas y escrituras fuera de ese alcance se rechazan, y tu configuración global, tus credenciales y otras sesiones siguen cerradas.',
+  'dialog.allowsFork': 'Permitir que los espectadores bifurquen la sesión',
+  'dialog.allowsForkHint': 'Las sesiones bifurcadas conservan los mismos permisos que la sesión original.',
+  'dialog.sessionMode.notGranted': 'Este Harness no devolvió el permiso de la sesión: si la versión del propietario es anterior, debe actualizarse antes de que el recurso compartido pueda llevarlo.',
+  'dialog.permissions': 'Permisos del recurso compartido',
+  'dialog.permissions.save': 'Guardar cambios',
+  'dialog.permissions.saving': 'Guardando…',
+  'dialog.permissions.saved': 'Se guardaron los permisos del recurso compartido y los extremos de los complementos.',
+  'dialog.permissions.failed': 'No se guardaron los permisos del recurso compartido. Inténtalo de nuevo.',
+  'dialog.permissions.partial': 'Se actualizó el permiso de la sesión, pero no se guardaron los extremos de los complementos. Inténtalo de nuevo.',
+  'dialog.permissions.modeUnsupported': 'Este Harness no devolvió un permiso de sesión, así que no se puede cambiar aquí.',
+  'dialog.permissions.unsaved': 'Hay cambios sin guardar.',
+  'dialog.permissions.discard': 'Hay cambios sin guardar; si eliges Listo otra vez, se descartan.',
+  'dialog.capabilities': 'Extremos de los complementos',
+  'dialog.capabilities.description': 'Elige un nivel para este recurso compartido; al guardar, el nivel se expande a los extremos que los complementos declaran ahora, así que los que añadan después siguen cerrados.',
+  'dialog.capabilities.none': 'No abierto a espectadores',
+  'dialog.capabilities.count': 'Extremos abiertos a espectadores: {count}',
+  'dialog.capabilities.tier.none': 'No disponible',
+  'dialog.capabilities.tier.read': 'Solo lectura',
+  'dialog.capabilities.tier.write': 'Escritura',
+  'dialog.capabilities.summary.read': 'Solo lectura · {count} extremos',
+  'dialog.capabilities.summary.write': 'Escritura · {readable} de solo lectura + {writable} de escritura',
+  'dialog.capabilities.stale': 'La selección guardada no es un nivel completo; si guardas otra vez, se reemplaza por el nivel que elijas.',
+  'dialog.capabilities.noReadable': 'Ningún complemento ofrece un extremo de solo lectura, así que no se puede elegir Solo lectura.',
+  'dialog.capabilities.noWritable': 'Ningún complemento ofrece un extremo de escritura, así que no se puede elegir Escritura.',
+  'dialog.capabilities.writeHint': 'Un extremo de escritura solo surte efecto cuando la sesión compartida permite escribir, y es destructivo dentro de un recurso compartido con escritura.',
+  'dialog.capabilities.empty': 'Ningún plugin declara endpoints para compartir actualmente.',
+  'dialog.capabilities.createFailed': 'El recurso compartido se creó, pero sus endpoints de plugin no se guardaron; reinténtalo en Permisos del recurso compartido.',
+  'dialog.linkHelp': 'Cerrar este panel no detiene el recurso compartido.',
+  'dialog.copyFailed': 'No se pudo copiar el enlace. Selecciona el enlace para compartir y cópialo manualmente.',
+  'dialog.diagnostics': 'Detalles de la conexión',
+  'dialog.accessUnavailable': 'Los detalles de acceso de este recurso compartido no están disponibles ahora. Los permisos existentes no cambian.',
+  'dialog.selectedCount': 'Personas seleccionadas confirmadas: {count}.',
+  'dialog.deploymentAccess': 'Identidades autorizadas por la implementación: {count}. La selección no es la única regla de acceso.',
+  'dialog.selectedRetired': 'Este recurso compartido conserva el alcance anterior de «compañeros concretos»; los nuevos solo ofrecen los dos modos anteriores.',
+  'dialog.description': 'Crea un enlace de Liveshare de solo lectura para {title}',
+  'dialog.relay': 'Dirección del servicio para compartir',
+
+
+  'dialog.relaySaved': 'Guardado. Los nuevos recursos compartidos usan esta dirección.',
+  'dialog.relayInvalid': 'Introduce una dirección completa que empiece por http:// o https://.',
+  'dialog.relayCurrent': 'Dirección actual',
+  'dialog.relayUnset': 'Sin dirección configurada',
+  'dialog.relaySource.unset': 'Sin configurar',
+  'dialog.relaySource.saved': 'Dirección guardada',
+  'dialog.relayVerified': 'Verificada en esta dirección',
+  'dialog.relayUnverified': 'Sin verificar en esta dirección',
+  'dialog.relayReverify': 'La dirección cambió; inicia sesión de nuevo en la nueva dirección.',
+  'dialog.relayUnsavedHint': 'Esta dirección aún no está guardada; guárdala para que entre en vigor.',
+  'dialog.identity.expired': 'Tu sesión ha caducado. Inicia sesión de nuevo antes de crear un recurso compartido.',
+  'dialog.identity.unverified': 'No has iniciado sesión, así que no puedes crear un recurso compartido.',
+  'dialog.identity.relayChanged': 'El inicio de sesión actual pertenece a otra dirección de Relay. Inicia sesión de nuevo en esta dirección.',
+  'dialog.identity.unknown': 'El estado de inicio de sesión no está disponible ahora. Inténtalo más tarde; no se creará ningún recurso compartido antes de que inicies sesión.',
+  'dialog.identity.retry': 'Reintentar',
+  'dialog.identity.verify': 'Iniciar sesión',
+  'dialog.identity.reverify': 'Iniciar sesión de nuevo',
+  'dialog.identity.verifyBlocked': 'Guarda la dirección y confirma que responde antes de iniciar sesión.',
+  'dialog.identity.loginOpening': 'Iniciando sesión…',
+  'dialog.identity.loginWaiting': 'Completa el inicio de sesión en la ventana que se abrió.',
+  'dialog.identity.loginVerifying': 'Confirmando el resultado del inicio de sesión…',
+  'dialog.identity.loginDone': 'Sesión iniciada; leyendo el estado de la cuenta.',
+  'dialog.identity.loginCancelled': 'Inicio de sesión cancelado; no se guardó ninguna credencial.',
+  'dialog.identity.loginExpired': 'Este inicio de sesión caducó; vuelve a empezar.',
+  'dialog.identity.loginMismatch': 'La respuesta de inicio de sesión no pertenecía a esta solicitud y se ignoró.',
+  'dialog.identity.loginReplayed': 'Este inicio de sesión ya se usó; vuelve a empezar.',
+  'dialog.identity.loginUnavailable': 'No se puede iniciar sesión: el Relay no está disponible o esta dirección no lo admite.',
+  'dialog.identity.loginBlocked': 'No se puede abrir la ventana de inicio de sesión (puede que el navegador la haya bloqueado). Permite las ventanas emergentes e inténtalo de nuevo.',
+  'dialog.identity.loginFailed': 'El inicio de sesión no terminó. Inténtalo de nuevo.',
+  'dialog.identity.expires': 'Válida hasta {time}',
+  'dialog.identity.renewed': 'Renovada automáticamente dentro de la autorización concedida.',
+  'dialog.identity.relayUnsupported': 'El Relay de esta dirección aún no verifica identidades. Actualízalo antes de crear un recurso compartido; esta página no creará uno anónimo.',
+  'dialog.expiry': 'Caduca',
+  'dialog.expiry.never': 'Nunca',
+  'dialog.expiry.hour': 'En 1 hora',
+  'dialog.expiry.day': 'En 24 horas',
+  'dialog.expiry.week': 'En 7 días',
+  'dialog.expiry.until': 'Hasta {time}',
+  'dialog.linkSharing': 'Compartir por enlace',
+  'dialog.help': 'Comparte solo esta sesión; el permiso de la sesión decide qué puede hacer el espectador, y puedes detenerlo cuando quieras en Gestionar recursos compartidos.',
+  'dialog.mode.open': 'Cualquiera de la organización con el enlace',
+  'dialog.mode.selected': 'Compañeros concretos',
+  'dialog.expiry.clear': 'Sin caducidad',
+  'dialog.create': 'Crear recurso compartido',
+  'dialog.creating': 'Creando…',
+  'dialog.cancel': 'Cancelar',
+  'dialog.copy': 'Copiar enlace',
+  'dialog.copied': 'Copiado',
+  'dialog.manage': 'Gestionar recursos compartidos',
+  'dialog.hostUnavailable': 'No se puede acceder al servicio de recursos compartidos de DSH Liveshare.',
+  'dialog.testing': 'Conectando con el servicio para compartir…',
+  'dialog.testOk': 'Conexión con el Relay correcta',
+  'dialog.testWarn': 'Se accede por HTTP al Relay, pero el registro no terminó y el anfitrión no indicó el motivo. Puedes crear el recurso compartido igualmente; la puerta de enlace reintenta.',
+  'dialog.testFail': 'Falló la conexión con el Relay (el anfitrión no indicó el motivo).',
+
+
+
+
+  'dialog.addressHint': 'Guarda primero la dirección del servicio para compartir.',
+
+  'dialog.connectivityChecking': 'Comprobando si responde la dirección del servicio para compartir…',
+
+  'dialog.permissionChecking': 'Comprobando si este equipo puede publicar en esta dirección…',
+  'dialog.permissionOk': 'Sesión iniciada; este host puede publicar recursos compartidos.',
+  'dialog.permissionPending': 'Hay que comprobar esta dirección antes de crear un recurso compartido.',
+  'dialog.permissionFailed': 'La comprobación de permiso no terminó (el anfitrión no indicó el motivo).',
+  'dialog.outgoing': 'Compartidos por mí',
+  'dialog.noOutgoing': 'Aún no hay sesiones compartidas',
+  'dialog.share.online': 'En línea',
+  'dialog.share.offline': 'Sin conexión',
+  'dialog.open': 'Abrir',
+  'dialog.stop': 'Dejar de compartir',
+  'dialog.stopFailed': 'No se pudo dejar de compartir. Inténtalo de nuevo.',
+  'manage.title': 'Gestión de recursos compartidos',
+  'manage.open': 'Gestionar',
+  'manage.cancelShare': 'Cancelar uso compartido',
+  'manage.description': 'Consulta el estado en línea y el alcance de acceso de cada recurso compartido.',
+  'manage.stop.title': '¿Dejar de compartir?',
+  'manage.stop.description': 'El enlace publicado deja de funcionar de inmediato y quien lo esté viendo pierde el acceso.',
+  'manage.stop.acknowledge': 'Entiendo que el enlace publicado deja de funcionar de inmediato',
+  'manage.identityExpired': 'Esta sesión de inicio caducó, lo que solo impide crear recursos compartidos nuevos. Los publicados abajo no se ven afectados: sus enlaces se siguen copiando y gestionando.',
+  'manage.loading': 'Cargando recursos compartidos…',
+  'manage.empty': 'Aún no hay sesiones compartidas.',
+  'manage.unavailable': 'No se pudieron cargar los recursos compartidos. Se muestra el último estado conocido.',
+  'manage.refresh': 'Recargar',
+  'manage.history': 'Historial',
+  'manage.historyLoading': 'Cargando el historial…',
+  'manage.historyFailed': 'No se pudo cargar el historial. Inténtalo de nuevo.',
+  'manage.expiresAt': 'Caduca el {time}',
+  'manage.expiredAt': 'Caducó el {time}',
+  'manage.sessionMode': 'Permiso de la sesión',
+  'manage.sessionModeSwitch': 'Permiso de sesión de «{title}»',
+  'manage.allowsForkSwitch': 'Si los espectadores pueden bifurcar «{title}»',
+  'manage.sessionModeUnsupported': 'Este Harness no devolvió un permiso de sesión, así que no se puede establecer aquí.',
+  'manage.sessionModeFailed': 'No se guardó el permiso de la sesión. Inténtalo de nuevo.',
+  'manage.capabilities': 'Extremos de los complementos',
+  'manage.audit.shareCreate': 'Recurso compartido creado',
+  'manage.audit.accessRequest': 'Acceso de lectura solicitado',
+  'manage.audit.accessApproved': 'Solicitud aprobada',
+  'manage.audit.accessGrant': 'Acceso de lectura concedido',
+  'manage.audit.accessRevoke': 'Acceso de lectura revocado',
+  'manage.audit.shareStop': 'Se dejó de compartir',
+  'manage.done': 'Listo',
+  'viewer.title': 'Sesión de solo lectura de Liveshare',
+  'viewer.sharedBy': 'Compartida por {owner} · {title}',
+  'viewer.readonlyNote': 'Solo lectura: puedes dirigir esta sesión, pero solo lees archivos dentro del alcance del recurso compartido y no modificas nada.',
+  'viewer.writeUnavailableNote': 'El propietario concedió la escritura, pero esta sesión no se puede dirigir ahora; el envío estará disponible cuando esté preparada.',
+  'viewer.model.title': 'El modelo con el que se ejecuta esta sesión, elegido por el propietario que la compartió',
+  'viewer.model.locked': 'Los espectadores no pueden cambiar el modelo',
+  'viewer.permission.title': 'El permiso de sesión que lleva este recurso compartido, definido por el propietario',
+  'viewer.permission.locked': 'Los espectadores no pueden cambiarlo por sí mismos',
+  'viewer.permission.unconfirmed': 'Sin confirmar',
+  'viewer.transcriptLabel': 'Contenido de la sesión (solo lectura)',
+  'viewer.role.user': 'Usuario',
+  'viewer.role.assistant': 'Asistente',
+  'viewer.role.tool': 'Herramienta',
+  'viewer.loading': 'Conectando con la sesión…',
+  'viewer.empty': 'Esta sesión aún no tiene contenido que mostrar.',
+  'viewer.reconnecting': 'Se perdió la conexión; reintentando…',
+  'viewer.offline': 'El recurso compartido está sin conexión. Se reconecta automáticamente.',
+  'viewer.retry': 'Reintentar ahora',
+  'viewer.expired': 'Este recurso compartido caducó y ya no concede acceso. Pide al propietario que lo comparta de nuevo.',
+  'viewer.revoked': 'El propietario dejó de compartir o revocó tu acceso.',
+  'viewer.reauthenticate': 'Tu sesión de inicio caducó. Inicia sesión de nuevo.',
+  'viewer.reauthenticateAction': 'Iniciar sesión de nuevo',
+  'viewer.status.connecting': 'Conectando con el recurso compartido…',
+  'viewer.status.invalid': 'Este enlace no es válido, o ese recurso compartido se eliminó.',
+  'viewer.status.invalidHint': 'Comprueba que el enlace esté completo o pide uno nuevo al propietario.',
+  'viewer.status.offline': 'El propietario está sin conexión ahora; esta página se reconecta automáticamente.',
+  'viewer.status.offlineHint': 'Espera un momento o elige Reintentar; si sigue sin conexión, contacta con el propietario.',
+  'viewer.status.stopped': 'El propietario detuvo este recurso compartido.',
+  'viewer.status.stoppedHint': 'Pide al propietario que lo reactive si aún necesitas acceso.',
+  'viewer.status.expired': 'Este recurso compartido caducó.',
+  'viewer.status.expiredHint': 'Pide al propietario que comparta la sesión de nuevo.',
+  'viewer.status.reauthenticate': 'Tu sesión de inicio caducó.',
+  'viewer.status.unavailable': 'El servicio para compartir no está disponible ahora; reintentando.',
+  'viewer.status.unavailableHint': 'Inténtalo de nuevo en breve; si sigue sin estar disponible, vuelve más tarde.',
+  'viewer.action.reload': 'Recargar',
+  'viewer.action.retry': 'Reintentar',
+  'viewer.action.signIn': 'Iniciar sesión de nuevo',
+  'viewer.action.directory': 'Volver a los recursos compartidos',
+  'viewer.expiresAt': 'Acceso hasta {time}',
+  'viewer.picker.ownerUnknown': 'Propietario desconocido',
+  'viewer.picker.version': 'DSH',
+  'viewer.picker.groupCount': '{count} recursos compartidos',
+  'viewer.picker.online': 'En línea',
+  'viewer.picker.offline': 'Sin conexión',
+  'viewer.picker.subjectLabel': 'asunto …{label}',
+  'viewer.picker.historical': 'Historial sin verificar',
+  'viewer.picker.historicalNote': 'Estos recursos compartidos son anteriores a las identidades verificadas; su acceso no cambia.',
+  'viewer.brand': 'LiveShare',
+  'viewer.home': 'Volver al inicio de LiveShare',
+  'viewer.sharedByShort': 'Compartida por {owner}',
+  'viewer.relayVersion': 'relé {release}',
+  'viewer.refused': 'liveshare: {subject} se rechazó con {status}',
+  'viewer.relayAnswered': 'liveshare: el Relay respondió {status}',
+  'viewer.relaySilent': 'liveshare: el Relay no respondió nada para {subject}',
+  'viewer.unreachable': 'liveshare: {subject} no llegó al Relay; reintentando',
+  'viewer.noAnswer': 'sin respuesta',
+  'viewer.row.fork': 'Bifurcar sesión',
+  'viewer.row.forkSource': 'Bifurcada de «{title}»',
+  'viewer.row.branchRefused': 'No se pudo completar la bifurcación: {reason}',
+  'viewer.sharePath.unavailable': 'Esta página no puede abrir archivos del espacio de trabajo: un recurso compartido entrega rutas de archivo, no su contenido.',
+  'viewer.reason.fork-not-permitted': 'El propietario no permite bifurcar esta sesión',
+  'viewer.reason.fork-not-implemented': 'Esta implementación aún no admite bifurcaciones',
+  'viewer.reason.write-not-implemented': 'Esta implementación aún no admite escritura',
+  'viewer.reason.share-not-found': 'Ese recurso compartido ya no existe',
+  'viewer.reason.share-stopped': 'Se dejó de compartir',
+  'viewer.reason.share-expired': 'El recurso compartido caducó',
+  'viewer.reason.source-session-mismatch': 'La bifurcación nombraba una sesión distinta de la que lleva el recurso compartido',
+  'viewer.reason.fork-operation-conflict': 'Esta solicitud de bifurcación nombraba un prefijo distinto del anterior, así que no se creó ninguna sesión nueva',
+  'viewer.reason.fork-enforcement-failed': 'Se creó la sesión de bifurcación, pero no se pudieron instalar sus límites de entorno aislado, así que no se puede usar',
+  'viewer.reason.mode-view': 'El propietario puso este recurso compartido en solo lectura',
+  'viewer.reason.unconfirmed': 'No se pudo confirmar el estado actual de este recurso compartido; permanece en solo lectura hasta que se confirme',
+  'viewer.reason.fork-viewer-unknown': 'El Relay no confirmó tu identidad, así que no se puede crear la bifurcación',
+  'viewer.reason.fork-unknown-child': 'Esta sesión no es una bifurcación de un recurso compartido',
+  'viewer.reason.fork-viewer-mismatch': 'Esa bifurcación pertenece a otro espectador',
+  'viewer.reason.fork-source-revoked': 'El recurso compartido del que proviene esta bifurcación ya no está activo',
+  'viewer.reason.fork-ceiling-uninstalled': 'Este anfitrión no ha instalado los límites de ejecución de solo lectura',
+  'viewer.reason.fork-prepare-failed': 'El anfitrión no pudo preparar esta bifurcación, así que esta acción no se ejecutó',
+  'viewer.reason.share-not-writable': 'El propietario no permite escribir en esta sesión',
+  'viewer.reason.source-write-unavailable': 'Este anfitrión no pudo confinar la sesión compartida, así que no puede dirigirla',
+  'viewer.reason.prompt-identity-missing': 'Este envío no llevaba una identidad de solicitud que atribuir, así que el anfitrión no lo ejecutó',
+  'viewer.reason.viewer-not-authorized': 'Tu cuenta ya no tiene acceso a este recurso compartido',
+  'viewer.reason.liveshare/read-only': 'Esta sesión está fuera del recurso compartido que tienes, así que no se escribió',
+}
+
+/** French Liveshare owner copy. */
+export const fr: Record<keyof typeof zh, string> = {
+  'header.action': 'Partager',
+  'inputOrigin.sharedSession': 'D’une session partagée [{subjectId}]',
+  'dialog.title': 'Partager la session',
+  'dialog.done': 'Terminé',
+  'dialog.shareLink': 'Lien de partage',
+  'dialog.sessionMode': 'Autorisation de la session',
+  'dialog.sessionMode.view': 'Lecture seule',
+  'dialog.sessionMode.write': 'Écriture dans l’espace de travail',
+  'dialog.sessionMode.hint.view': 'Lecture seule : les spectateurs lisent les fichiers et le journal de la session dans le périmètre partagé et peuvent envoyer des messages à la session, mais tous les outils s’exécutent dans un bac à sable en lecture seule et aucun fichier ne peut être écrit.',
+  'dialog.sessionMode.hint.write': 'Écriture dans l’espace de travail : le spectateur travaille dans un bac à sable inscriptible et borné ; il modifie les fichiers dans le périmètre du partage sous le plafond d’écriture ; les lectures et écritures hors de ce périmètre sont refusées, et vos réglages globaux, vos identifiants et les autres sessions restent fermés.',
+  'dialog.allowsFork': 'Autoriser les spectateurs à dupliquer la session',
+  'dialog.allowsForkHint': 'Les sessions dupliquées conservent les mêmes permissions que la session source.',
+  'dialog.sessionMode.notGranted': 'Ce Harness n’a pas renvoyé l’autorisation de la session : une version plus ancienne du propriétaire doit être mise à jour avant que le partage puisse la porter.',
+  'dialog.permissions': 'Autorisations du partage',
+  'dialog.permissions.save': 'Enregistrer les modifications',
+  'dialog.permissions.saving': 'Enregistrement…',
+  'dialog.permissions.saved': 'Autorisations du partage et points de terminaison des plugins enregistrés.',
+  'dialog.permissions.failed': 'Les autorisations du partage n’ont pas été enregistrées. Réessayez.',
+  'dialog.permissions.partial': 'L’autorisation de la session a été mise à jour, mais les points de terminaison des plugins n’ont pas été enregistrés. Réessayez.',
+  'dialog.permissions.modeUnsupported': 'Ce Harness n’a pas renvoyé d’autorisation de session ; elle ne peut donc pas être modifiée ici.',
+  'dialog.permissions.unsaved': 'Modifications non enregistrées.',
+  'dialog.permissions.discard': 'Modifications non enregistrées ; choisir Terminé à nouveau les abandonne.',
+  'dialog.capabilities': 'Points de terminaison des plugins',
+  'dialog.capabilities.description': 'Choisissez un palier pour ce partage ; à l’enregistrement, le palier se déploie sur les points de terminaison que les plugins déclarent maintenant, si bien que ceux qu’ils ajoutent ensuite restent fermés.',
+  'dialog.capabilities.none': 'Fermé aux spectateurs',
+  'dialog.capabilities.count': 'Points de terminaison ouverts aux spectateurs : {count}',
+  'dialog.capabilities.tier.none': 'Indisponible',
+  'dialog.capabilities.tier.read': 'Lecture seule',
+  'dialog.capabilities.tier.write': 'Inscriptible',
+  'dialog.capabilities.summary.read': 'Lecture seule · {count} points de terminaison',
+  'dialog.capabilities.summary.write': 'Inscriptible · {readable} en lecture seule + {writable} inscriptibles',
+  'dialog.capabilities.stale': 'La sélection enregistrée ne forme pas un palier complet ; un nouvel enregistrement la remplace par le palier choisi.',
+  'dialog.capabilities.noReadable': 'Aucun plugin ne fournit de point de terminaison en lecture seule ; Lecture seule ne peut donc pas être choisi.',
+  'dialog.capabilities.noWritable': 'Aucun plugin ne fournit de point de terminaison inscriptible ; Inscriptible ne peut donc pas être choisi.',
+  'dialog.capabilities.writeHint': 'Un point de terminaison inscriptible ne prend effet que si la session partagée autorise l’écriture, et il est destructif dans un partage inscriptible.',
+  'dialog.capabilities.empty': 'Aucun plugin ne déclare actuellement de points de terminaison à partager.',
+  'dialog.capabilities.createFailed': 'Le partage a été créé, mais ses points de terminaison de plugin n’ont pas été enregistrés ; réessayez dans Autorisations du partage.',
+  'dialog.linkHelp': 'Fermer ce panneau n’arrête pas le partage.',
+  'dialog.copyFailed': 'Impossible de copier le lien. Sélectionnez le lien de partage et copiez-le manuellement.',
+  'dialog.diagnostics': 'Détails de la connexion',
+  'dialog.accessUnavailable': 'Les détails d’accès de ce partage sont indisponibles. Les autorisations existantes restent inchangées.',
+  'dialog.selectedCount': 'Personnes sélectionnées confirmées : {count}.',
+  'dialog.deploymentAccess': 'Identités autorisées par le déploiement : {count}. La sélection n’est pas la seule règle d’accès.',
+  'dialog.selectedRetired': 'Ce partage conserve l’ancien périmètre « collègues précis » ; les nouveaux partages ne proposent que les deux modes ci-dessus.',
+  'dialog.description': 'Créer un lien Liveshare en lecture seule pour {title}',
+  'dialog.relay': 'Adresse du service de partage',
+
+
+  'dialog.relaySaved': 'Enregistré. Les nouveaux partages utilisent cette adresse.',
+  'dialog.relayInvalid': 'Saisissez une adresse complète commençant par http:// ou https://.',
+  'dialog.relayCurrent': 'Adresse actuelle',
+  'dialog.relayUnset': 'Aucune adresse définie',
+  'dialog.relaySource.unset': 'Non définie',
+  'dialog.relaySource.saved': 'Adresse enregistrée',
+  'dialog.relayVerified': 'Vérifiée sur cette adresse',
+  'dialog.relayUnverified': 'Non vérifiée sur cette adresse',
+  'dialog.relayReverify': 'L’adresse a changé ; reconnectez-vous sur la nouvelle adresse.',
+  'dialog.relayUnsavedHint': 'Cette adresse n’est pas encore enregistrée ; enregistrez-la pour qu’elle prenne effet.',
+  'dialog.identity.expired': 'Votre connexion a expiré. Reconnectez-vous avant de créer un partage.',
+  'dialog.identity.unverified': 'Vous n’êtes pas connecté, vous ne pouvez donc pas créer de partage.',
+  'dialog.identity.relayChanged': 'La connexion actuelle appartient à une autre adresse Relay. Reconnectez-vous sur cette adresse.',
+  'dialog.identity.unknown': 'L’état de connexion est indisponible pour le moment. Réessayez plus tard ; aucun partage n’est créé avant votre connexion.',
+  'dialog.identity.retry': 'Réessayer',
+  'dialog.identity.verify': 'Se connecter',
+  'dialog.identity.reverify': 'Se reconnecter',
+  'dialog.identity.verifyBlocked': 'Enregistrez l’adresse et confirmez qu’elle répond avant de vous connecter.',
+  'dialog.identity.loginOpening': 'Connexion en cours…',
+  'dialog.identity.loginWaiting': 'Terminez la connexion dans la fenêtre qui s’est ouverte.',
+  'dialog.identity.loginVerifying': 'Vérification du résultat de la connexion…',
+  'dialog.identity.loginDone': 'Connexion réussie ; lecture de l’état du compte.',
+  'dialog.identity.loginCancelled': 'Connexion annulée ; aucune information d’identification n’a été enregistrée.',
+  'dialog.identity.loginExpired': 'Cette connexion a expiré ; recommencez.',
+  'dialog.identity.loginMismatch': 'La réponse de connexion n’appartenait pas à cette requête et a été ignorée.',
+  'dialog.identity.loginReplayed': 'Cette connexion a déjà été utilisée ; recommencez.',
+  'dialog.identity.loginUnavailable': 'Impossible de démarrer la connexion : le Relay est indisponible ou cette adresse ne le prend pas en charge.',
+  'dialog.identity.loginBlocked': 'Impossible d’ouvrir la fenêtre de connexion (le navigateur l’a peut-être bloquée). Autorisez les fenêtres pop-up et réessayez.',
+  'dialog.identity.loginFailed': 'La connexion ne s’est pas terminée. Réessayez.',
+  'dialog.identity.expires': 'Valable jusqu’à {time}',
+  'dialog.identity.renewed': 'Renouvelée automatiquement dans l’autorisation accordée.',
+  'dialog.identity.relayUnsupported': 'Le Relay de cette adresse ne vérifie pas encore les identités. Mettez-le à jour avant de créer un partage ; cette page n’en créera pas d’anonyme.',
+  'dialog.expiry': 'Expiration',
+  'dialog.expiry.never': 'Jamais',
+  'dialog.expiry.hour': 'Dans 1 heure',
+  'dialog.expiry.day': 'Dans 24 heures',
+  'dialog.expiry.week': 'Dans 7 jours',
+  'dialog.expiry.until': 'Jusqu’au {time}',
+  'dialog.linkSharing': 'Partage par lien',
+  'dialog.help': 'Partage uniquement cette session ; l’autorisation de la session décide de ce que le spectateur peut faire, et vous pouvez l’arrêter à tout moment dans Gérer les partages.',
+  'dialog.mode.open': 'Toute personne de l’organisation disposant du lien',
+  'dialog.mode.selected': 'Collègues précis',
+  'dialog.expiry.clear': 'Sans expiration',
+  'dialog.create': 'Créer le partage',
+  'dialog.creating': 'Création…',
+  'dialog.cancel': 'Annuler',
+  'dialog.copy': 'Copier le lien',
+  'dialog.copied': 'Copié',
+  'dialog.manage': 'Gérer les partages',
+  'dialog.hostUnavailable': 'Impossible de joindre le service de partage DSH Liveshare.',
+  'dialog.testing': 'Connexion au service de partage…',
+  'dialog.testOk': 'Connexion au Relay correcte',
+  'dialog.testWarn': 'Le Relay répond en HTTP, mais l’enregistrement ne s’est pas terminé et l’hôte n’a donné aucune raison. Vous pouvez tout de même créer le partage ; la passerelle réessaie.',
+  'dialog.testFail': 'La connexion au Relay a échoué (l’hôte n’a donné aucune raison).',
+
+
+
+
+  'dialog.addressHint': 'Enregistrez d’abord l’adresse du service de partage.',
+
+  'dialog.connectivityChecking': 'Test de réponse de l’adresse du service de partage…',
+
+  'dialog.permissionChecking': 'Vérification que cet hôte peut publier à cette adresse…',
+  'dialog.permissionOk': 'Connecté ; cet hôte peut publier des partages.',
+  'dialog.permissionPending': 'Cette adresse doit être vérifiée avant de créer un partage.',
+  'dialog.permissionFailed': 'La vérification de l’autorisation ne s’est pas terminée (l’hôte n’a donné aucune raison).',
+  'dialog.outgoing': 'Partagées par moi',
+  'dialog.noOutgoing': 'Aucune session partagée pour l’instant',
+  'dialog.share.online': 'En ligne',
+  'dialog.share.offline': 'Hors ligne',
+  'dialog.open': 'Ouvrir',
+  'dialog.stop': 'Arrêter le partage',
+  'dialog.stopFailed': 'L’arrêt du partage a échoué. Réessayez.',
+  'manage.title': 'Gestion des partages',
+  'manage.open': 'Gérer',
+  'manage.cancelShare': 'Annuler le partage',
+  'manage.description': 'Consultez l’état en ligne et le périmètre d’accès de chaque partage.',
+  'manage.stop.title': 'Arrêter le partage ?',
+  'manage.stop.description': 'Le lien publié cesse immédiatement de fonctionner, et toute personne qui le consulte perd l’accès.',
+  'manage.stop.acknowledge': 'Je comprends que le lien publié cesse immédiatement de fonctionner',
+  'manage.identityExpired': 'Cette connexion a expiré, ce qui bloque uniquement la création de nouveaux partages. Les partages publiés ci-dessous ne sont pas affectés : leurs liens restent copiables et gérables.',
+  'manage.loading': 'Chargement des partages…',
+  'manage.empty': 'Aucune session partagée pour l’instant.',
+  'manage.unavailable': 'Impossible de charger les partages. Dernier état connu affiché.',
+  'manage.refresh': 'Recharger',
+  'manage.history': 'Historique',
+  'manage.historyLoading': 'Chargement de l’historique…',
+  'manage.historyFailed': 'Impossible de charger l’historique. Réessayez.',
+  'manage.expiresAt': 'Expire le {time}',
+  'manage.expiredAt': 'Expiré le {time}',
+  'manage.sessionMode': 'Autorisation de la session',
+  'manage.sessionModeSwitch': 'Autorisation de session de « {title} »',
+  'manage.allowsForkSwitch': 'Dérivation de « {title} » autorisée aux spectateurs',
+  'manage.sessionModeUnsupported': 'Ce Harness n’a pas renvoyé d’autorisation de session ; elle ne peut pas être définie ici.',
+  'manage.sessionModeFailed': 'L’autorisation de la session n’a pas été enregistrée. Réessayez.',
+  'manage.capabilities': 'Points de terminaison des plugins',
+  'manage.audit.shareCreate': 'Partage créé',
+  'manage.audit.accessRequest': 'Demande d’accès en lecture',
+  'manage.audit.accessApproved': 'Demande approuvée',
+  'manage.audit.accessGrant': 'Accès en lecture accordé',
+  'manage.audit.accessRevoke': 'Accès en lecture révoqué',
+  'manage.audit.shareStop': 'Partage arrêté',
+  'manage.done': 'Terminé',
+  'viewer.title': 'Session Liveshare en lecture seule',
+  'viewer.sharedBy': 'Partagée par {owner} · {title}',
+  'viewer.readonlyNote': 'Lecture seule : vous pouvez piloter cette session, mais vous ne lisez que les fichiers du périmètre du partage et ne modifiez rien.',
+  'viewer.writeUnavailableNote': 'Le propriétaire a accordé l’écriture, mais cette session ne peut pas être pilotée pour l’instant ; l’envoi sera possible dès qu’elle sera prête.',
+  'viewer.model.title': 'Le modèle sur lequel tourne cette session, choisi par le propriétaire qui l’a partagée',
+  'viewer.model.locked': 'Les spectateurs ne peuvent pas changer de modèle',
+  'viewer.permission.title': 'L’autorisation de session que porte ce partage, définie par le propriétaire',
+  'viewer.permission.locked': 'Les spectateurs ne peuvent pas la changer eux-mêmes',
+  'viewer.permission.unconfirmed': 'Non confirmée',
+  'viewer.transcriptLabel': 'Contenu de la session (lecture seule)',
+  'viewer.role.user': 'Utilisateur',
+  'viewer.role.assistant': 'Assistant',
+  'viewer.role.tool': 'Outil',
+  'viewer.loading': 'Connexion à la session…',
+  'viewer.empty': 'Cette session n’a encore aucun contenu à afficher.',
+  'viewer.reconnecting': 'Connexion interrompue, nouvelle tentative…',
+  'viewer.offline': 'Le partage est hors ligne. La reconnexion est automatique.',
+  'viewer.retry': 'Réessayer maintenant',
+  'viewer.expired': 'Ce partage a expiré et n’accorde plus l’accès. Demandez au propriétaire de partager de nouveau.',
+  'viewer.revoked': 'Le propriétaire a arrêté le partage ou révoqué votre accès.',
+  'viewer.reauthenticate': 'Votre connexion a expiré. Veuillez vous reconnecter.',
+  'viewer.reauthenticateAction': 'Se reconnecter',
+  'viewer.status.connecting': 'Connexion au partage…',
+  'viewer.status.invalid': 'Ce lien n’est pas valide, ou ce partage a été supprimé.',
+  'viewer.status.invalidHint': 'Vérifiez que le lien est complet, ou demandez-en un nouveau au propriétaire.',
+  'viewer.status.offline': 'Le propriétaire est hors ligne pour l’instant ; la page se reconnecte automatiquement.',
+  'viewer.status.offlineHint': 'Attendez un instant ou choisissez Réessayer ; si le partage reste hors ligne, contactez le propriétaire.',
+  'viewer.status.stopped': 'Le propriétaire a arrêté ce partage.',
+  'viewer.status.stoppedHint': 'Demandez au propriétaire de le réactiver si vous avez encore besoin d’accès.',
+  'viewer.status.expired': 'Ce partage a expiré.',
+  'viewer.status.expiredHint': 'Demandez au propriétaire de partager de nouveau la session.',
+  'viewer.status.reauthenticate': 'Votre connexion a expiré.',
+  'viewer.status.unavailable': 'Le service de partage est indisponible pour l’instant ; nouvelle tentative.',
+  'viewer.status.unavailableHint': 'Réessayez bientôt ; s’il reste indisponible, revenez plus tard.',
+  'viewer.action.reload': 'Recharger',
+  'viewer.action.retry': 'Réessayer',
+  'viewer.action.signIn': 'Se reconnecter',
+  'viewer.action.directory': 'Retour aux partages',
+  'viewer.expiresAt': 'Accès jusqu’à {time}',
+  'viewer.picker.ownerUnknown': 'Propriétaire inconnu',
+  'viewer.picker.version': 'DSH',
+  'viewer.picker.groupCount': '{count} partages',
+  'viewer.picker.online': 'En ligne',
+  'viewer.picker.offline': 'Hors ligne',
+  'viewer.picker.subjectLabel': 'sujet …{label}',
+  'viewer.picker.historical': 'Historique non vérifié',
+  'viewer.picker.historicalNote': 'Ces partages précèdent les identités vérifiées ; leur accès reste inchangé.',
+  'viewer.brand': 'LiveShare',
+  'viewer.home': 'Retour à l’accueil LiveShare',
+  'viewer.sharedByShort': 'Partagée par {owner}',
+  'viewer.relayVersion': 'relais {release}',
+  'viewer.refused': 'liveshare : {subject} a été refusé avec {status}',
+  'viewer.relayAnswered': 'liveshare : le Relay a répondu {status}',
+  'viewer.relaySilent': 'liveshare : le Relay n’a rien répondu pour {subject}',
+  'viewer.unreachable': 'liveshare : {subject} n’a pas atteint le Relay, nouvelle tentative',
+  'viewer.noAnswer': 'sans réponse',
+  'viewer.row.fork': 'Dériver la session',
+  'viewer.row.forkSource': 'Dérivée de « {title} »',
+  'viewer.row.branchRefused': 'Impossible de terminer la dérivation : {reason}',
+  'viewer.sharePath.unavailable': 'Cette page ne peut pas ouvrir les fichiers de l’espace de travail : un partage transmet des chemins de fichiers, pas leur contenu.',
+  'viewer.reason.fork-not-permitted': 'Le propriétaire n’autorise pas la dérivation de cette session',
+  'viewer.reason.fork-not-implemented': 'Ce déploiement ne prend pas encore en charge la dérivation',
+  'viewer.reason.write-not-implemented': 'Ce déploiement ne prend pas encore en charge l’écriture',
+  'viewer.reason.share-not-found': 'Ce partage n’existe plus',
+  'viewer.reason.share-stopped': 'Le partage a été arrêté',
+  'viewer.reason.share-expired': 'Le partage a expiré',
+  'viewer.reason.source-session-mismatch': 'La dérivation désignait une session différente de celle que porte le partage',
+  'viewer.reason.fork-operation-conflict': 'Cette demande de dérivation désignait un préfixe différent de la précédente ; aucune nouvelle session n’a été créée',
+  'viewer.reason.fork-enforcement-failed': 'La session dérivée a été créée, mais ses limites de bac à sable n’ont pas pu être installées ; elle est donc inutilisable',
+  'viewer.reason.mode-view': 'Le propriétaire a mis ce partage en lecture seule',
+  'viewer.reason.unconfirmed': 'L’état actuel de ce partage n’a pas pu être confirmé ; il reste en lecture seule jusqu’à confirmation',
+  'viewer.reason.fork-viewer-unknown': 'Le Relay n’a pas confirmé votre identité ; la dérivation ne peut donc pas être créée',
+  'viewer.reason.fork-unknown-child': 'Cette session n’est pas une dérivation d’un partage',
+  'viewer.reason.fork-viewer-mismatch': 'Cette dérivation appartient à un autre spectateur',
+  'viewer.reason.fork-source-revoked': 'Le partage d’origine de cette dérivation n’est plus actif',
+  'viewer.reason.fork-ceiling-uninstalled': 'Cet hôte n’a pas installé les limites d’exécution en lecture seule',
+  'viewer.reason.fork-prepare-failed': 'L’hôte n’a pas pu préparer cette dérivation ; cette action n’a donc pas été exécutée',
+  'viewer.reason.share-not-writable': 'Le propriétaire n’autorise pas l’écriture dans cette session',
+  'viewer.reason.source-write-unavailable': 'Cet hôte n’a pas pu confiner la session partagée ; il ne peut donc pas la piloter',
+  'viewer.reason.prompt-identity-missing': 'Cet envoi ne portait aucune identité de demande à attribuer ; l’hôte ne l’a donc pas exécuté',
+  'viewer.reason.viewer-not-authorized': 'Votre compte n’a plus accès à ce partage',
+  'viewer.reason.liveshare/read-only': 'Cette session est hors du partage que vous détenez ; rien n’a été écrit',
+}
+
+/** German Liveshare owner copy. */
+export const de: Record<keyof typeof zh, string> = {
+  'header.action': 'Teilen',
+  'inputOrigin.sharedSession': 'Aus einer geteilten Sitzung [{subjectId}]',
+  'dialog.title': 'Sitzung teilen',
+  'dialog.done': 'Fertig',
+  'dialog.shareLink': 'Freigabelink',
+  'dialog.sessionMode': 'Sitzungsberechtigung',
+  'dialog.sessionMode.view': 'Nur lesen',
+  'dialog.sessionMode.write': 'Schreiben im Arbeitsbereich',
+  'dialog.sessionMode.hint.view': 'Nur lesen: Zuschauer lesen Dateien und den Sitzungsverlauf im freigegebenen Bereich und können der Sitzung Nachrichten senden; alle Werkzeuge laufen jedoch in einer schreibgeschützten Sandbox und können keine Dateien schreiben.',
+  'dialog.sessionMode.hint.write': 'Schreiben im Arbeitsbereich: Der Betrachter arbeitet in einer begrenzt beschreibbaren Sandbox; er ändert Dateien innerhalb des Freigabebereichs im Rahmen der Schreibgrenze; Lese- und Schreibzugriffe außerhalb dieses Bereichs werden abgelehnt, und deine globalen Einstellungen, Anmeldedaten und anderen Sitzungen bleiben geschlossen.',
+  'dialog.allowsFork': 'Zuschauern das Forken der Sitzung erlauben',
+  'dialog.allowsForkHint': 'Geforkte Sitzungen behalten dieselben Berechtigungen wie die Quellsitzung.',
+  'dialog.sessionMode.notGranted': 'Dieses Harness hat die Sitzungsberechtigung nicht zurückgemeldet: Eine ältere Eigentümer-Version muss aktualisiert werden, bevor die Freigabe sie tragen kann.',
+  'dialog.permissions': 'Freigabeberechtigungen',
+  'dialog.permissions.save': 'Änderungen speichern',
+  'dialog.permissions.saving': 'Wird gespeichert…',
+  'dialog.permissions.saved': 'Freigabeberechtigungen und Plugin-Endpunkte gespeichert.',
+  'dialog.permissions.failed': 'Die Freigabeberechtigungen wurden nicht gespeichert. Bitte erneut versuchen.',
+  'dialog.permissions.partial': 'Die Sitzungsberechtigung wurde aktualisiert, aber die Plugin-Endpunkte wurden nicht gespeichert. Bitte erneut versuchen.',
+  'dialog.permissions.modeUnsupported': 'Dieses Harness hat keine Sitzungsberechtigung zurückgemeldet, daher kann sie hier nicht geändert werden.',
+  'dialog.permissions.unsaved': 'Ungespeicherte Änderungen.',
+  'dialog.permissions.discard': 'Ungespeicherte Änderungen; wenn du erneut auf Fertig klickst, werden sie verworfen.',
+  'dialog.capabilities': 'Plugin-Endpunkte',
+  'dialog.capabilities.description': 'Wähle eine Stufe für diese Freigabe; beim Speichern wird die Stufe auf die Endpunkte ausgeweitet, die die Plugins jetzt deklarieren, sodass später hinzugefügte Endpunkte geschlossen bleiben.',
+  'dialog.capabilities.none': 'Für Betrachter nicht geöffnet',
+  'dialog.capabilities.count': 'Für Betrachter geöffnete Endpunkte: {count}',
+  'dialog.capabilities.tier.none': 'Nicht verfügbar',
+  'dialog.capabilities.tier.read': 'Nur lesen',
+  'dialog.capabilities.tier.write': 'Beschreibbar',
+  'dialog.capabilities.summary.read': 'Nur lesen · {count} Endpunkte',
+  'dialog.capabilities.summary.write': 'Beschreibbar · {readable} nur lesen + {writable} beschreibbar',
+  'dialog.capabilities.stale': 'Die gespeicherte Auswahl ist keine vollständige Stufe; erneutes Speichern ersetzt sie durch die gewählte Stufe.',
+  'dialog.capabilities.noReadable': 'Kein Plugin bietet einen schreibgeschützten Endpunkt, daher kann „Nur lesen“ nicht gewählt werden.',
+  'dialog.capabilities.noWritable': 'Kein Plugin bietet einen beschreibbaren Endpunkt, daher kann „Beschreibbar“ nicht gewählt werden.',
+  'dialog.capabilities.writeHint': 'Ein beschreibbarer Endpunkt wirkt nur, wenn die geteilte Sitzung das Schreiben erlaubt, und ist in einer beschreibbaren Freigabe zerstörerisch.',
+  'dialog.capabilities.empty': 'Derzeit deklariert kein Plugin teilbare Endpunkte.',
+  'dialog.capabilities.createFailed': 'Die Freigabe wurde erstellt, aber ihre Plugin-Endpunkte wurden nicht gespeichert; versuche es erneut unter Freigabeberechtigungen.',
+  'dialog.linkHelp': 'Das Schließen dieses Bereichs beendet die Freigabe nicht.',
+  'dialog.copyFailed': 'Der Link konnte nicht kopiert werden. Wähle den Freigabelink aus und kopiere ihn manuell.',
+  'dialog.diagnostics': 'Verbindungsdetails',
+  'dialog.accessUnavailable': 'Die Zugriffsdetails dieser Freigabe sind derzeit nicht verfügbar. Bestehende Berechtigungen bleiben unverändert.',
+  'dialog.selectedCount': 'Bestätigte ausgewählte Personen: {count}.',
+  'dialog.deploymentAccess': 'Vom Deployment autorisierte Identitäten: {count}. Die Auswahl ist nicht die einzige Zugriffsregel.',
+  'dialog.selectedRetired': 'Diese Freigabe behält ihren älteren Bereich „bestimmte Kollegen“; neue Freigaben bieten nur die beiden Modi oben.',
+  'dialog.description': 'Erstelle einen schreibgeschützten Liveshare-Link für {title}',
+  'dialog.relay': 'Adresse des Freigabedienstes',
+
+
+  'dialog.relaySaved': 'Gespeichert. Neue Freigaben verwenden diese Adresse.',
+  'dialog.relayInvalid': 'Gib eine vollständige Adresse ein, die mit http:// oder https:// beginnt.',
+  'dialog.relayCurrent': 'Aktuell wirksame Adresse',
+  'dialog.relayUnset': 'Keine Adresse festgelegt',
+  'dialog.relaySource.unset': 'Nicht festgelegt',
+  'dialog.relaySource.saved': 'Gespeicherte Adresse',
+  'dialog.relayVerified': 'Auf dieser Adresse verifiziert',
+  'dialog.relayUnverified': 'Auf dieser Adresse nicht verifiziert',
+  'dialog.relayReverify': 'Die Adresse wurde geändert; melde dich an der neuen Adresse erneut an.',
+  'dialog.relayUnsavedHint': 'Diese Adresse ist noch nicht gespeichert; speichere sie, damit sie wirksam wird.',
+  'dialog.identity.expired': 'Deine Anmeldung ist abgelaufen. Melde dich erneut an, bevor du eine Freigabe erstellst.',
+  'dialog.identity.unverified': 'Du bist nicht angemeldet und kannst daher keine Freigabe erstellen.',
+  'dialog.identity.relayChanged': 'Die aktuelle Anmeldung gehört zu einer anderen Relay-Adresse. Melde dich an dieser Adresse erneut an.',
+  'dialog.identity.unknown': 'Der Anmeldestatus ist derzeit nicht verfügbar. Versuche es später erneut; vor der Anmeldung wird keine Freigabe erstellt.',
+  'dialog.identity.retry': 'Erneut versuchen',
+  'dialog.identity.verify': 'Anmelden',
+  'dialog.identity.reverify': 'Erneut anmelden',
+  'dialog.identity.verifyBlocked': 'Speichere die Adresse und bestätige, dass sie antwortet, bevor du dich anmeldest.',
+  'dialog.identity.loginOpening': 'Anmeldung wird gestartet…',
+  'dialog.identity.loginWaiting': 'Schließe die Anmeldung im geöffneten Fenster ab.',
+  'dialog.identity.loginVerifying': 'Anmeldeergebnis wird bestätigt…',
+  'dialog.identity.loginDone': 'Angemeldet; Kontostatus wird gelesen.',
+  'dialog.identity.loginCancelled': 'Anmeldung abgebrochen; es wurde kein Anmeldeinformationssatz gespeichert.',
+  'dialog.identity.loginExpired': 'Diese Anmeldung ist abgelaufen; starte erneut.',
+  'dialog.identity.loginMismatch': 'Die Anmeldeantwort gehörte nicht zu dieser Anfrage und wurde ignoriert.',
+  'dialog.identity.loginReplayed': 'Diese Anmeldung wurde bereits verwendet; starte erneut.',
+  'dialog.identity.loginUnavailable': 'Anmeldung kann nicht gestartet werden: Die Relay ist nicht verfügbar oder diese Adresse unterstützt sie nicht.',
+  'dialog.identity.loginBlocked': 'Das Anmeldefenster kann nicht geöffnet werden (möglicherweise hat der Browser es blockiert). Erlaube Pop-ups und versuche es erneut.',
+  'dialog.identity.loginFailed': 'Die Anmeldung wurde nicht abgeschlossen. Versuche es erneut.',
+  'dialog.identity.expires': 'Gültig bis {time}',
+  'dialog.identity.renewed': 'Im Rahmen der erteilten Autorisierung automatisch erneuert.',
+  'dialog.identity.relayUnsupported': 'Der Relay unter dieser Adresse verifiziert noch keine Identitäten. Aktualisiere ihn, bevor du eine Freigabe erstellst; diese Seite erstellt keine anonyme Freigabe.',
+  'dialog.expiry': 'Gültigkeit',
+  'dialog.expiry.never': 'Nie',
+  'dialog.expiry.hour': 'In 1 Stunde',
+  'dialog.expiry.day': 'In 24 Stunden',
+  'dialog.expiry.week': 'In 7 Tagen',
+  'dialog.expiry.until': 'Bis {time}',
+  'dialog.linkSharing': 'Linkfreigabe',
+  'dialog.help': 'Teilt nur diese Sitzung; die Sitzungsberechtigung entscheidet, was der Betrachter darf, und du kannst die Freigabe jederzeit unter „Freigaben verwalten“ beenden.',
+  'dialog.mode.open': 'Alle in der Organisation mit dem Link',
+  'dialog.mode.selected': 'Bestimmte Kollegen',
+  'dialog.expiry.clear': 'Läuft nicht ab',
+  'dialog.create': 'Freigabe erstellen',
+  'dialog.creating': 'Wird erstellt…',
+  'dialog.cancel': 'Abbrechen',
+  'dialog.copy': 'Link kopieren',
+  'dialog.copied': 'Kopiert',
+  'dialog.manage': 'Freigaben verwalten',
+  'dialog.hostUnavailable': 'Der DSH-Liveshare-Freigabedienst ist nicht erreichbar.',
+  'dialog.testing': 'Verbindung zum Freigabedienst…',
+  'dialog.testOk': 'Relay-Verbindung in Ordnung',
+  'dialog.testWarn': 'Der Relay ist per HTTP erreichbar, aber die Registrierung wurde nicht abgeschlossen und der Host nannte keinen Grund. Du kannst die Freigabe trotzdem erstellen; das Gateway versucht es erneut.',
+  'dialog.testFail': 'Die Verbindung zum Relay ist fehlgeschlagen (der Host nannte keinen Grund).',
+
+
+
+
+  'dialog.addressHint': 'Speichere zuerst die Adresse des Freigabedienstes.',
+
+  'dialog.connectivityChecking': 'Antwort der Adresse des Freigabedienstes wird geprüft…',
+
+  'dialog.permissionChecking': 'Es wird geprüft, ob dieser Host unter dieser Adresse veröffentlichen darf…',
+  'dialog.permissionOk': 'Angemeldet; dieser Host kann Freigaben veröffentlichen.',
+  'dialog.permissionPending': 'Diese Adresse muss geprüft werden, bevor eine Freigabe erstellt werden kann.',
+  'dialog.permissionFailed': 'Die Berechtigungsprüfung wurde nicht abgeschlossen (der Host nannte keinen Grund).',
+  'dialog.outgoing': 'Von mir geteilt',
+  'dialog.noOutgoing': 'Noch keine geteilten Sitzungen',
+  'dialog.share.online': 'Online',
+  'dialog.share.offline': 'Offline',
+  'dialog.open': 'Öffnen',
+  'dialog.stop': 'Freigabe beenden',
+  'dialog.stopFailed': 'Die Freigabe konnte nicht beendet werden. Versuche es später erneut.',
+  'manage.title': 'Freigabeverwaltung',
+  'manage.open': 'Verwalten',
+  'manage.cancelShare': 'Freigabe abbrechen',
+  'manage.description': 'Online-Status und Zugriffsbereich jeder Freigabe ansehen.',
+  'manage.stop.title': 'Freigabe beenden?',
+  'manage.stop.description': 'Der veröffentlichte Link funktioniert sofort nicht mehr, und wer ihn gerade ansieht, verliert den Zugriff.',
+  'manage.stop.acknowledge': 'Ich verstehe, dass der veröffentlichte Link sofort nicht mehr funktioniert',
+  'manage.identityExpired': 'Diese Anmeldung ist abgelaufen; das blockiert nur das Erstellen neuer Freigaben. Die unten veröffentlichten Freigaben sind nicht betroffen: Ihre Links lassen sich weiterhin kopieren und verwalten.',
+  'manage.loading': 'Freigaben werden geladen…',
+  'manage.empty': 'Noch keine geteilten Sitzungen.',
+  'manage.unavailable': 'Die Freigaben konnten nicht geladen werden. Es wird der zuletzt bekannte Stand angezeigt.',
+  'manage.refresh': 'Neu laden',
+  'manage.history': 'Verlauf',
+  'manage.historyLoading': 'Verlauf wird geladen…',
+  'manage.historyFailed': 'Der Verlauf konnte nicht geladen werden. Versuche es erneut.',
+  'manage.expiresAt': 'Läuft am {time} ab',
+  'manage.expiredAt': 'Abgelaufen am {time}',
+  'manage.sessionMode': 'Sitzungsberechtigung',
+  'manage.sessionModeSwitch': 'Sitzungsberechtigung für „{title}“ festlegen',
+  'manage.allowsForkSwitch': 'Ob Betrachter „{title}“ abzweigen dürfen',
+  'manage.sessionModeUnsupported': 'Dieses Harness hat keine Sitzungsberechtigung zurückgemeldet, daher kann sie hier nicht festgelegt werden.',
+  'manage.sessionModeFailed': 'Die Sitzungsberechtigung wurde nicht gespeichert. Versuche es erneut.',
+  'manage.capabilities': 'Plugin-Endpunkte',
+  'manage.audit.shareCreate': 'Freigabe erstellt',
+  'manage.audit.accessRequest': 'Lesezugriff angefragt',
+  'manage.audit.accessApproved': 'Anfrage genehmigt',
+  'manage.audit.accessGrant': 'Lesezugriff erteilt',
+  'manage.audit.accessRevoke': 'Lesezugriff entzogen',
+  'manage.audit.shareStop': 'Freigabe beendet',
+  'manage.done': 'Fertig',
+  'viewer.title': 'Liveshare-Sitzung (schreibgeschützt)',
+  'viewer.sharedBy': 'Geteilt von {owner} · {title}',
+  'viewer.readonlyNote': 'Nur lesen: Du kannst diese Sitzung steuern, liest aber nur Dateien innerhalb des Freigabebereichs und änderst nichts.',
+  'viewer.writeUnavailableNote': 'Der Eigentümer hat das Schreiben erlaubt, aber diese Sitzung kann derzeit nicht gesteuert werden; sobald sie vorbereitet ist, kannst du Nachrichten senden.',
+  'viewer.model.title': 'Das Modell, auf dem diese Sitzung läuft, vom teilenden Eigentümer gewählt',
+  'viewer.model.locked': 'Betrachter können das Modell nicht wechseln',
+  'viewer.permission.title': 'Die Sitzungsberechtigung dieser Freigabe, vom Eigentümer festgelegt',
+  'viewer.permission.locked': 'Betrachter können sie nicht selbst ändern',
+  'viewer.permission.unconfirmed': 'Noch nicht bestätigt',
+  'viewer.transcriptLabel': 'Sitzungsinhalt (schreibgeschützt)',
+  'viewer.role.user': 'Benutzer',
+  'viewer.role.assistant': 'Assistent',
+  'viewer.role.tool': 'Werkzeug',
+  'viewer.loading': 'Verbindung zur Sitzung…',
+  'viewer.empty': 'Diese Sitzung hat noch keinen anzeigbaren Inhalt.',
+  'viewer.reconnecting': 'Verbindung unterbrochen, neuer Versuch…',
+  'viewer.offline': 'Die Freigabe ist vorübergehend offline. Sie verbindet sich später automatisch neu.',
+  'viewer.retry': 'Jetzt erneut versuchen',
+  'viewer.expired': 'Diese Freigabe ist abgelaufen und gewährt keinen Zugriff mehr. Bitte den Eigentümer, sie erneut zu teilen.',
+  'viewer.revoked': 'Der Eigentümer hat die Freigabe beendet oder deinen Zugriff entzogen.',
+  'viewer.reauthenticate': 'Deine Anmeldung ist abgelaufen. Bitte melde dich erneut an.',
+  'viewer.reauthenticateAction': 'Erneut anmelden',
+  'viewer.status.connecting': 'Verbindung zur Freigabe…',
+  'viewer.status.invalid': 'Dieser Link ist ungültig oder diese Freigabe wurde gelöscht.',
+  'viewer.status.invalidHint': 'Prüfe, ob der Link vollständig ist; du kannst den Eigentümer auch um einen neuen Link bitten.',
+  'viewer.status.offline': 'Der Eigentümer ist derzeit offline; die Seite verbindet sich automatisch neu.',
+  'viewer.status.offlineHint': 'Warte einen Moment oder wähle Erneut versuchen; ist die Freigabe weiterhin offline, wende dich an den Eigentümer.',
+  'viewer.status.stopped': 'Der Eigentümer hat diese Freigabe beendet.',
+  'viewer.status.stoppedHint': 'Bitte den Eigentümer, sie wieder zu aktivieren, wenn du weiterhin Zugriff brauchst.',
+  'viewer.status.expired': 'Diese Freigabe ist abgelaufen.',
+  'viewer.status.expiredHint': 'Bitte den Eigentümer, die Sitzung erneut zu teilen.',
+  'viewer.status.reauthenticate': 'Deine Anmeldung ist abgelaufen.',
+  'viewer.status.unavailable': 'Der Freigabedienst ist derzeit nicht verfügbar; neuer Versuch läuft.',
+  'viewer.status.unavailableHint': 'Versuche es gleich noch einmal; ist er weiterhin nicht verfügbar, komm später wieder.',
+  'viewer.action.reload': 'Neu laden',
+  'viewer.action.retry': 'Erneut versuchen',
+  'viewer.action.signIn': 'Erneut anmelden',
+  'viewer.action.directory': 'Zurück zu den Freigaben',
+  'viewer.expiresAt': 'Zugriff bis {time}',
+  'viewer.picker.ownerUnknown': 'Unbekannter Eigentümer',
+  'viewer.picker.version': 'DSH',
+  'viewer.picker.groupCount': '{count} Freigaben',
+  'viewer.picker.online': 'Online',
+  'viewer.picker.offline': 'Offline',
+  'viewer.picker.subjectLabel': 'Subjekt …{label}',
+  'viewer.picker.historical': 'Unverifizierter Verlauf',
+  'viewer.picker.historicalNote': 'Diese Freigaben stammen aus der Zeit vor verifizierten Identitäten; ihr Zugriff bleibt unverändert.',
+  'viewer.brand': 'LiveShare',
+  'viewer.home': 'Zurück zur LiveShare-Startseite',
+  'viewer.sharedByShort': 'Geteilt von {owner}',
+  'viewer.relayVersion': 'Relay {release}',
+  'viewer.refused': 'liveshare: {subject} wurde mit {status} abgelehnt',
+  'viewer.relayAnswered': 'liveshare: Der Relay antwortete {status}',
+  'viewer.relaySilent': 'liveshare: Der Relay antwortete nichts für {subject}',
+  'viewer.unreachable': 'liveshare: {subject} hat den Relay nicht erreicht, neuer Versuch',
+  'viewer.noAnswer': 'keine Antwort',
+  'viewer.row.fork': 'Sitzung abzweigen',
+  'viewer.row.forkSource': 'Abgezweigt von „{title}“',
+  'viewer.row.branchRefused': 'Die Abzweigung konnte nicht abgeschlossen werden: {reason}',
+  'viewer.sharePath.unavailable': 'Diese Seite kann Dateien des Arbeitsbereichs nicht öffnen: Eine Freigabe übergibt Dateipfade, nicht Dateiinhalte.',
+  'viewer.reason.fork-not-permitted': 'Der Eigentümer erlaubt das Abzweigen dieser Sitzung nicht',
+  'viewer.reason.fork-not-implemented': 'Dieses Deployment unterstützt das Abzweigen noch nicht',
+  'viewer.reason.write-not-implemented': 'Dieses Deployment unterstützt das Schreiben noch nicht',
+  'viewer.reason.share-not-found': 'Diese Freigabe existiert nicht mehr',
+  'viewer.reason.share-stopped': 'Die Freigabe wurde beendet',
+  'viewer.reason.share-expired': 'Die Freigabe ist abgelaufen',
+  'viewer.reason.source-session-mismatch': 'Die Abzweigung nannte eine andere Sitzung als die der Freigabe',
+  'viewer.reason.fork-operation-conflict': 'Diese Abzweigungsanfrage nannte ein anderes Präfix als die frühere; es wurde keine neue Sitzung erstellt',
+  'viewer.reason.fork-enforcement-failed': 'Die abgezweigte Sitzung wurde erstellt, aber ihre Sandbox-Grenzen konnten nicht installiert werden; sie ist daher unbrauchbar',
+  'viewer.reason.mode-view': 'Der Eigentümer hat diese Freigabe auf Nur lesen gesetzt',
+  'viewer.reason.unconfirmed': 'Der aktuelle Zustand dieser Freigabe konnte nicht bestätigt werden; sie bleibt bis zur Bestätigung schreibgeschützt',
+  'viewer.reason.fork-viewer-unknown': 'Der Relay hat deine Identität nicht bestätigt; die Abzweigung kann daher nicht erstellt werden',
+  'viewer.reason.fork-unknown-child': 'Diese Sitzung ist keine Abzweigung einer Freigabe',
+  'viewer.reason.fork-viewer-mismatch': 'Diese Abzweigung gehört zu einem anderen Betrachter',
+  'viewer.reason.fork-source-revoked': 'Die Freigabe, aus der diese Abzweigung stammt, ist nicht mehr aktiv',
+  'viewer.reason.fork-ceiling-uninstalled': 'Dieser Host hat die Ausführungsgrenzen für Nur lesen nicht installiert',
+  'viewer.reason.fork-prepare-failed': 'Der Host konnte diese Abzweigung nicht vorbereiten; diese Aktion wurde daher nicht ausgeführt',
+  'viewer.reason.share-not-writable': 'Der Eigentümer erlaubt das Schreiben in dieser Sitzung nicht',
+  'viewer.reason.source-write-unavailable': 'Dieser Host konnte die geteilte Sitzung nicht einschränken und kann sie daher nicht steuern',
+  'viewer.reason.prompt-identity-missing': 'Dieser Sendevorgang trug keine Anfrageidentität zur Zuordnung; der Host hat ihn daher nicht ausgeführt',
+  'viewer.reason.viewer-not-authorized': 'Dein Konto hat keinen Zugriff mehr auf diese Freigabe',
+  'viewer.reason.liveshare/read-only': 'Diese Sitzung liegt außerhalb der Freigabe, die du hältst; es wurde nichts geschrieben',
+}
+
+/** Russian Liveshare owner copy. */
+export const ru: Record<keyof typeof zh, string> = {
+  'header.action': 'Поделиться',
+  'inputOrigin.sharedSession': 'Из общего сеанса [{subjectId}]',
+  'dialog.title': 'Поделиться сеансом',
+  'dialog.done': 'Готово',
+  'dialog.shareLink': 'Ссылка для общего доступа',
+  'dialog.sessionMode': 'Разрешение сеанса',
+  'dialog.sessionMode.view': 'Только чтение',
+  'dialog.sessionMode.write': 'Запись в рабочем пространстве',
+  'dialog.sessionMode.hint.view': 'Только чтение: зрители читают файлы и историю сеанса в общем доступе и могут отправлять сообщения в сеанс, но все инструменты работают в песочнице только для чтения и не могут записывать файлы.',
+  'dialog.sessionMode.hint.write': 'Запись в рабочем пространстве: зритель работает в изолированной среде с ограниченной записью; он изменяет файлы в пределах общего доступа и под лимитом записи; чтение и запись за пределами этого доступа отклоняются, а ваши глобальные настройки, учётные данные и другие сеансы остаются закрытыми.',
+  'dialog.allowsFork': 'Разрешить зрителям ответвлять сеанс',
+  'dialog.allowsForkHint': 'Ответвлённые сессии сохраняют те же разрешения, что и исходная сессия.',
+  'dialog.sessionMode.notGranted': 'Этот Harness не вернул разрешение сеанса: более старая версия владельца должна быть обновлена, прежде чем общий доступ сможет его нести.',
+  'dialog.permissions': 'Разрешения общего доступа',
+  'dialog.permissions.save': 'Сохранить изменения',
+  'dialog.permissions.saving': 'Сохранение…',
+  'dialog.permissions.saved': 'Разрешения общего доступа и конечные точки плагинов сохранены.',
+  'dialog.permissions.failed': 'Разрешения общего доступа не сохранены. Повторите попытку.',
+  'dialog.permissions.partial': 'Разрешение сеанса обновлено, но конечные точки плагинов не сохранены. Повторите попытку.',
+  'dialog.permissions.modeUnsupported': 'Этот Harness не вернул разрешение сеанса, поэтому здесь его нельзя изменить.',
+  'dialog.permissions.unsaved': 'Есть несохранённые изменения.',
+  'dialog.permissions.discard': 'Есть несохранённые изменения; повторное нажатие «Готово» отменит их.',
+  'dialog.capabilities': 'Конечные точки плагинов',
+  'dialog.capabilities.description': 'Выберите уровень для этого общего доступа; при сохранении уровень разворачивается в конечные точки, которые плагины объявляют сейчас, поэтому добавленные позже останутся закрытыми.',
+  'dialog.capabilities.none': 'Не открыт для зрителей',
+  'dialog.capabilities.count': 'Конечных точек открыто для зрителей: {count}',
+  'dialog.capabilities.tier.none': 'Недоступно',
+  'dialog.capabilities.tier.read': 'Только чтение',
+  'dialog.capabilities.tier.write': 'Запись',
+  'dialog.capabilities.summary.read': 'Только чтение · {count} конечных точек',
+  'dialog.capabilities.summary.write': 'Запись · {readable} только для чтения + {writable} для записи',
+  'dialog.capabilities.stale': 'Сохранённый выбор не является целым уровнем; повторное сохранение заменит его выбранным уровнем.',
+  'dialog.capabilities.noReadable': 'Ни один плагин не предоставляет конечную точку только для чтения, поэтому «Только чтение» выбрать нельзя.',
+  'dialog.capabilities.noWritable': 'Ни один плагин не предоставляет конечную точку для записи, поэтому «Запись» выбрать нельзя.',
+  'dialog.capabilities.writeHint': 'Конечная точка для записи действует только тогда, когда общий сеанс разрешает запись, и она разрушительна в общем доступе с записью.',
+  'dialog.capabilities.empty': 'Сейчас ни один плагин не объявляет конечные точки для общего доступа.',
+  'dialog.capabilities.createFailed': 'Общий доступ создан, но конечные точки плагинов не сохранены; повторите в разделе «Разрешения общего доступа».',
+  'dialog.linkHelp': 'Закрытие этой панели не останавливает общий доступ.',
+  'dialog.copyFailed': 'Не удалось скопировать ссылку. Выделите ссылку и скопируйте её вручную.',
+  'dialog.diagnostics': 'Диагностика подключения',
+  'dialog.accessUnavailable': 'Сведения о доступе для этого общего доступа сейчас недоступны. Существующие разрешения не меняются.',
+  'dialog.selectedCount': 'Выбранных людей подтверждено: {count}.',
+  'dialog.deploymentAccess': 'Идентичностей, разрешённых развертыванием: {count}. Выбор — не единственное правило доступа.',
+  'dialog.selectedRetired': 'Этот общий доступ сохраняет старую область «определённые коллеги»; новые общие доступы предлагают только два режима выше.',
+  'dialog.description': 'Создать ссылку Liveshare только для чтения для {title}',
+  'dialog.relay': 'Адрес сервиса общего доступа',
+
+
+  'dialog.relaySaved': 'Сохранено. Новые общие доступы используют этот адрес.',
+  'dialog.relayInvalid': 'Введите полный адрес, начинающийся с http:// или https://.',
+  'dialog.relayCurrent': 'Текущий действующий адрес',
+  'dialog.relayUnset': 'Адрес не задан',
+  'dialog.relaySource.unset': 'Не задан',
+  'dialog.relaySource.saved': 'Сохранённый адрес',
+  'dialog.relayVerified': 'Проверен на этом адресе',
+  'dialog.relayUnverified': 'Не проверен на этом адресе',
+  'dialog.relayReverify': 'Адрес изменён; войдите снова по новому адресу.',
+  'dialog.relayUnsavedHint': 'Этот адрес ещё не сохранён; сохраните его, чтобы он вступил в силу.',
+  'dialog.identity.expired': 'Срок входа истёк. Войдите снова, прежде чем создавать общий доступ.',
+  'dialog.identity.unverified': 'Вы не вошли в систему, поэтому не можете создать общий доступ.',
+  'dialog.identity.relayChanged': 'Текущий вход относится к другому адресу Relay. Войдите снова по этому адресу.',
+  'dialog.identity.unknown': 'Состояние входа сейчас недоступно. Повторите попытку позже; до входа общий доступ не создаётся.',
+  'dialog.identity.retry': 'Повторить',
+  'dialog.identity.verify': 'Войти',
+  'dialog.identity.reverify': 'Войти снова',
+  'dialog.identity.verifyBlocked': 'Сохраните адрес и подтвердите, что он отвечает, прежде чем войти.',
+  'dialog.identity.loginOpening': 'Начинаем вход…',
+  'dialog.identity.loginWaiting': 'Завершите вход в открывшемся окне.',
+  'dialog.identity.loginVerifying': 'Подтверждаем результат входа…',
+  'dialog.identity.loginDone': 'Вход выполнен; читаем состояние аккаунта.',
+  'dialog.identity.loginCancelled': 'Вход отменён; учётные данные не сохранены.',
+  'dialog.identity.loginExpired': 'Этот вход истёк; начните заново.',
+  'dialog.identity.loginMismatch': 'Ответ на вход не относится к этому запросу и был проигнорирован.',
+  'dialog.identity.loginReplayed': 'Этот вход уже использован; начните заново.',
+  'dialog.identity.loginUnavailable': 'Не удалось начать вход: Relay недоступен или этот адрес его не поддерживает.',
+  'dialog.identity.loginBlocked': 'Не удалось открыть окно входа (возможно, браузер заблокировал его). Разрешите всплывающие окна и повторите попытку.',
+  'dialog.identity.loginFailed': 'Вход не завершён. Повторите попытку.',
+  'dialog.identity.expires': 'Действительно до {time}',
+  'dialog.identity.renewed': 'Продлено автоматически в пределах предоставленного разрешения.',
+  'dialog.identity.relayUnsupported': 'Relay по этому адресу ещё не проверяет личности. Обновите его, прежде чем создавать общий доступ; эта страница не создаст анонимный.',
+  'dialog.expiry': 'Срок действия',
+  'dialog.expiry.never': 'Никогда',
+  'dialog.expiry.hour': 'Через 1 час',
+  'dialog.expiry.day': 'Через 24 часа',
+  'dialog.expiry.week': 'Через 7 дней',
+  'dialog.expiry.until': 'До {time}',
+  'dialog.linkSharing': 'Общий доступ по ссылке',
+  'dialog.help': 'Доступ открывается только к этому сеансу; разрешение сеанса определяет, что может делать зритель, и вы можете остановить доступ в любой момент в разделе «Управление доступом».',
+  'dialog.mode.open': 'Любой в организации, у кого есть ссылка',
+  'dialog.mode.selected': 'Определённые коллеги',
+  'dialog.expiry.clear': 'Без срока',
+  'dialog.create': 'Создать общий доступ',
+  'dialog.creating': 'Создание…',
+  'dialog.cancel': 'Отмена',
+  'dialog.copy': 'Копировать ссылку',
+  'dialog.copied': 'Скопировано',
+  'dialog.manage': 'Управление доступом',
+  'dialog.hostUnavailable': 'Не удаётся связаться с сервисом общего доступа DSH Liveshare.',
+  'dialog.testing': 'Подключение к сервису общего доступа…',
+  'dialog.testOk': 'Подключение к Relay в порядке',
+  'dialog.testWarn': 'Relay доступен по HTTP, но регистрация не завершилась, и хост не указал причину. Общий доступ всё равно можно создать; шлюз повторит попытку.',
+  'dialog.testFail': 'Не удалось подключиться к Relay (хост не указал причину).',
+
+
+
+
+  'dialog.addressHint': 'Сначала сохраните адрес сервиса общего доступа.',
+
+  'dialog.connectivityChecking': 'Проверка, отвечает ли адрес сервиса общего доступа…',
+
+  'dialog.permissionChecking': 'Проверка, может ли этот хост публиковать общий доступ по этому адресу…',
+  'dialog.permissionOk': 'Вход выполнен; этот хост может публиковать общий доступ.',
+  'dialog.permissionPending': 'Прежде чем создать общий доступ, нужно проверить этот адрес.',
+  'dialog.permissionFailed': 'Проверка разрешения не завершилась (хост не указал причину).',
+  'dialog.outgoing': 'Открыто мной',
+  'dialog.noOutgoing': 'Общих сеансов пока нет',
+  'dialog.share.online': 'В сети',
+  'dialog.share.offline': 'Не в сети',
+  'dialog.open': 'Открыть',
+  'dialog.stop': 'Остановить доступ',
+  'dialog.stopFailed': 'Не удалось остановить общий доступ. Повторите попытку позже.',
+  'manage.title': 'Управление доступом',
+  'manage.open': 'Управлять',
+  'manage.cancelShare': 'Отменить общий доступ',
+  'manage.description': 'Состояние в сети и область доступа каждого общего доступа.',
+  'manage.stop.title': 'Остановить общий доступ?',
+  'manage.stop.description': 'Опубликованная ссылка сразу перестанет работать, и просматривающие потеряют доступ.',
+  'manage.stop.acknowledge': 'Я понимаю, что опубликованная ссылка сразу перестанет работать',
+  'manage.identityExpired': 'Учётные данные входа истекли; это блокирует только создание новых общих доступов. Опубликованные ниже не затронуты: их ссылки по-прежнему можно копировать и ими управлять.',
+  'manage.loading': 'Загрузка общих доступов…',
+  'manage.empty': 'Общих сеансов пока нет.',
+  'manage.unavailable': 'Не удалось загрузить общие доступы. Показано последнее известное состояние.',
+  'manage.refresh': 'Обновить',
+  'manage.history': 'История',
+  'manage.historyLoading': 'Загрузка истории…',
+  'manage.historyFailed': 'Не удалось загрузить историю. Повторите попытку.',
+  'manage.expiresAt': 'Истекает {time}',
+  'manage.expiredAt': 'Истёк {time}',
+  'manage.sessionMode': 'Разрешение сеанса',
+  'manage.sessionModeSwitch': 'Разрешение сеанса для «{title}»',
+  'manage.allowsForkSwitch': 'Могут ли зрители ответвлять «{title}»',
+  'manage.sessionModeUnsupported': 'Этот Harness не вернул разрешение сеанса, поэтому здесь его нельзя задать.',
+  'manage.sessionModeFailed': 'Разрешение сеанса не сохранено. Повторите попытку.',
+  'manage.capabilities': 'Конечные точки плагинов',
+  'manage.audit.shareCreate': 'Общий доступ создан',
+  'manage.audit.accessRequest': 'Запрошен доступ на чтение',
+  'manage.audit.accessApproved': 'Запрос одобрен',
+  'manage.audit.accessGrant': 'Доступ на чтение предоставлен',
+  'manage.audit.accessRevoke': 'Доступ на чтение отозван',
+  'manage.audit.shareStop': 'Общий доступ остановлен',
+  'manage.done': 'Готово',
+  'viewer.title': 'Сеанс Liveshare только для чтения',
+  'viewer.sharedBy': 'Открыт {owner} · {title}',
+  'viewer.readonlyNote': 'Только чтение: вы можете управлять этим сеансом, но читаете только файлы в пределах общего доступа и ничего не меняете.',
+  'viewer.writeUnavailableNote': 'Владелец разрешил запись, но этим сеансом сейчас нельзя управлять; отправка станет доступна, когда он будет подготовлен.',
+  'viewer.model.title': 'Модель, на которой работает этот сеанс, выбрана владельцем, открывшим доступ',
+  'viewer.model.locked': 'Зрители не могут сменить модель',
+  'viewer.permission.title': 'Разрешение сеанса, которое несёт этот общий доступ, задано владельцем',
+  'viewer.permission.locked': 'Зрители не могут изменить его сами',
+  'viewer.permission.unconfirmed': 'Не подтверждено',
+  'viewer.transcriptLabel': 'Содержимое сеанса (только чтение)',
+  'viewer.role.user': 'Пользователь',
+  'viewer.role.assistant': 'Ассистент',
+  'viewer.role.tool': 'Инструмент',
+  'viewer.loading': 'Подключение к сеансу…',
+  'viewer.empty': 'В этом сеансе пока нет содержимого для показа.',
+  'viewer.reconnecting': 'Соединение прервано, повторная попытка…',
+  'viewer.offline': 'Общий доступ временно не в сети. Он переподключится автоматически.',
+  'viewer.retry': 'Повторить сейчас',
+  'viewer.expired': 'Этот общий доступ истёк и больше не даёт доступа. Попросите владельца открыть его снова.',
+  'viewer.revoked': 'Владелец остановил общий доступ или отозвал ваш доступ.',
+  'viewer.reauthenticate': 'Состояние входа истекло. Войдите снова.',
+  'viewer.reauthenticateAction': 'Войти снова',
+  'viewer.status.connecting': 'Подключение к общему доступу…',
+  'viewer.status.invalid': 'Ссылка недействительна или этот общий доступ удалён.',
+  'viewer.status.invalidHint': 'Проверьте, что ссылка полная; также можно попросить у владельца новую.',
+  'viewer.status.offline': 'Владелец сейчас не в сети; страница переподключится автоматически.',
+  'viewer.status.offlineHint': 'Подождите немного или нажмите «Повторить»; если доступ долго не в сети, свяжитесь с владельцем.',
+  'viewer.status.stopped': 'Владелец остановил этот общий доступ.',
+  'viewer.status.stoppedHint': 'Попросите владельца снова включить его, если доступ всё ещё нужен.',
+  'viewer.status.expired': 'Этот общий доступ истёк.',
+  'viewer.status.expiredHint': 'Попросите владельца снова открыть сеанс.',
+  'viewer.status.reauthenticate': 'Срок входа истёк.',
+  'viewer.status.unavailable': 'Сервис общего доступа сейчас недоступен; повторная попытка.',
+  'viewer.status.unavailableHint': 'Повторите попытку позже; если сервис остаётся недоступным, вернитесь позже.',
+  'viewer.action.reload': 'Обновить',
+  'viewer.action.retry': 'Повторить',
+  'viewer.action.signIn': 'Войти снова',
+  'viewer.action.directory': 'Назад к общим доступам',
+  'viewer.expiresAt': 'Доступ до {time}',
+  'viewer.picker.ownerUnknown': 'Неизвестный владелец',
+  'viewer.picker.version': 'DSH',
+  'viewer.picker.groupCount': '{count} общих доступов',
+  'viewer.picker.online': 'В сети',
+  'viewer.picker.offline': 'Не в сети',
+  'viewer.picker.subjectLabel': 'субъект …{label}',
+  'viewer.picker.historical': 'Непроверенная история',
+  'viewer.picker.historicalNote': 'Эти общие доступы созданы до появления проверенных личностей; их доступ не меняется.',
+  'viewer.brand': 'LiveShare',
+  'viewer.home': 'Вернуться на главную LiveShare',
+  'viewer.sharedByShort': 'Открыт {owner}',
+  'viewer.relayVersion': 'Relay {release}',
+  'viewer.refused': 'liveshare: {subject} отклонён с {status}',
+  'viewer.relayAnswered': 'liveshare: Relay ответил {status}',
+  'viewer.relaySilent': 'liveshare: Relay ничего не ответил для {subject}',
+  'viewer.unreachable': 'liveshare: {subject} не дошёл до Relay, повторная попытка',
+  'viewer.noAnswer': 'нет ответа',
+  'viewer.row.fork': 'Ответвить сеанс',
+  'viewer.row.forkSource': 'Ответвление от «{title}»',
+  'viewer.row.branchRefused': 'Не удалось завершить ответвление: {reason}',
+  'viewer.sharePath.unavailable': 'Эта страница не может открыть файлы рабочего пространства: общий доступ передаёт пути к файлам, а не их содержимое.',
+  'viewer.reason.fork-not-permitted': 'Владелец не разрешает ответвлять этот сеанс',
+  'viewer.reason.fork-not-implemented': 'Это развертывание пока не поддерживает ответвление',
+  'viewer.reason.write-not-implemented': 'Это развертывание пока не поддерживает запись',
+  'viewer.reason.share-not-found': 'Этот общий доступ больше не существует',
+  'viewer.reason.share-stopped': 'Общий доступ остановлен',
+  'viewer.reason.share-expired': 'Общий доступ истёк',
+  'viewer.reason.source-session-mismatch': 'Ответвление указывало сеанс, отличный от сеанса общего доступа',
+  'viewer.reason.fork-operation-conflict': 'Этот запрос ответвления указывал другой префикс, чем предыдущий, поэтому новый сеанс не создан',
+  'viewer.reason.fork-enforcement-failed': 'Сеанс ответвления создан, но его ограничения изолированной среды не удалось установить, поэтому им нельзя пользоваться',
+  'viewer.reason.mode-view': 'Владелец перевёл этот общий доступ в режим только для чтения',
+  'viewer.reason.unconfirmed': 'Текущее состояние этого общего доступа не удалось подтвердить; он остаётся только для чтения до подтверждения',
+  'viewer.reason.fork-viewer-unknown': 'Relay не подтвердил вашу личность, поэтому ответвление нельзя создать',
+  'viewer.reason.fork-unknown-child': 'Этот сеанс не является ответвлением общего доступа',
+  'viewer.reason.fork-viewer-mismatch': 'Это ответвление принадлежит другому зрителю',
+  'viewer.reason.fork-source-revoked': 'Общий доступ, от которого создано это ответвление, больше не активен',
+  'viewer.reason.fork-ceiling-uninstalled': 'На этом хосте не установлены ограничения выполнения только для чтения',
+  'viewer.reason.fork-prepare-failed': 'Хост не смог подготовить это ответвление, поэтому действие не выполнено',
+  'viewer.reason.share-not-writable': 'Владелец не разрешает запись в этот сеанс',
+  'viewer.reason.source-write-unavailable': 'Этот хост не смог ограничить общий сеанс, поэтому не может им управлять',
+  'viewer.reason.prompt-identity-missing': 'В этой отправке не было идентичности запроса для указания авторства, поэтому хост её не выполнил',
+  'viewer.reason.viewer-not-authorized': 'Ваша учётная запись больше не имеет доступа к этому общему доступу',
+  'viewer.reason.liveshare/read-only': 'Этот сеанс вне вашего общего доступа, поэтому запись не выполнялась',
+}
+
+/** Brazilian-Portuguese Liveshare owner copy. */
+export const pt: Record<keyof typeof zh, string> = {
+  'header.action': 'Compartilhar',
+  'inputOrigin.sharedSession': 'De uma sessão compartilhada [{subjectId}]',
+  'dialog.title': 'Compartilhar sessão',
+  'dialog.done': 'Concluído',
+  'dialog.shareLink': 'Link de compartilhamento',
+  'dialog.sessionMode': 'Permissão da sessão',
+  'dialog.sessionMode.view': 'Somente leitura',
+  'dialog.sessionMode.write': 'Escrita no espaço de trabalho',
+  'dialog.sessionMode.hint.view': 'Somente leitura: os espectadores leem os arquivos e o histórico da sessão no escopo compartilhado e podem enviar mensagens à sessão, mas todas as ferramentas são executadas em um sandbox somente leitura e não podem gravar arquivos.',
+  'dialog.sessionMode.hint.write': 'Escrita no espaço de trabalho: o espectador trabalha em um sandbox gravável e limitado; ele altera arquivos dentro do escopo do compartilhamento sob o limite de escrita; leituras e gravações fora desse escopo são recusadas, e suas configurações globais, credenciais e outras sessões continuam fechadas.',
+  'dialog.allowsFork': 'Permitir que os espectadores criem uma ramificação da sessão',
+  'dialog.allowsForkHint': 'As sessões ramificadas mantêm as mesmas permissões da sessão original.',
+  'dialog.sessionMode.notGranted': 'Este Harness não retornou a permissão da sessão: uma versão mais antiga do proprietário precisa ser atualizada antes de o compartilhamento poder carregá-la.',
+  'dialog.permissions': 'Permissões do compartilhamento',
+  'dialog.permissions.save': 'Salvar alterações',
+  'dialog.permissions.saving': 'Salvando…',
+  'dialog.permissions.saved': 'Permissões do compartilhamento e endpoints dos plugins salvos.',
+  'dialog.permissions.failed': 'As permissões do compartilhamento não foram salvas. Tente novamente.',
+  'dialog.permissions.partial': 'A permissão da sessão foi atualizada, mas os endpoints dos plugins não foram salvos. Tente novamente.',
+  'dialog.permissions.modeUnsupported': 'Este Harness não retornou uma permissão de sessão, portanto ela não pode ser alterada aqui.',
+  'dialog.permissions.unsaved': 'Alterações não salvas.',
+  'dialog.permissions.discard': 'Alterações não salvas; escolher Concluído novamente as descarta.',
+  'dialog.capabilities': 'Endpoints dos plugins',
+  'dialog.capabilities.description': 'Escolha um nível para este compartilhamento; ao salvar, o nível se expande para os endpoints que os plugins declaram agora, então os que forem adicionados depois continuam fechados.',
+  'dialog.capabilities.none': 'Não aberto a espectadores',
+  'dialog.capabilities.count': 'Endpoints abertos a espectadores: {count}',
+  'dialog.capabilities.tier.none': 'Indisponível',
+  'dialog.capabilities.tier.read': 'Somente leitura',
+  'dialog.capabilities.tier.write': 'Gravável',
+  'dialog.capabilities.summary.read': 'Somente leitura · {count} endpoints',
+  'dialog.capabilities.summary.write': 'Gravável · {readable} somente leitura + {writable} graváveis',
+  'dialog.capabilities.stale': 'A seleção salva não é um nível inteiro; salvar de novo a substitui pelo nível escolhido.',
+  'dialog.capabilities.noReadable': 'Nenhum plugin oferece um endpoint somente leitura, então Somente leitura não pode ser escolhido.',
+  'dialog.capabilities.noWritable': 'Nenhum plugin oferece um endpoint gravável, então Gravável não pode ser escolhido.',
+  'dialog.capabilities.writeHint': 'Um endpoint gravável só entra em vigor quando a sessão compartilhada permite escrita, e é destrutivo em um compartilhamento gravável.',
+  'dialog.capabilities.empty': 'Nenhum plugin declara endpoints para compartilhar no momento.',
+  'dialog.capabilities.createFailed': 'O compartilhamento foi criado, mas os endpoints dos plugins não foram salvos; tente novamente em Permissões do compartilhamento.',
+  'dialog.linkHelp': 'Fechar este painel não interrompe o compartilhamento.',
+  'dialog.copyFailed': 'Não foi possível copiar o link. Selecione o link de compartilhamento e copie manualmente.',
+  'dialog.diagnostics': 'Detalhes da conexão',
+  'dialog.accessUnavailable': 'Os detalhes de acesso deste compartilhamento estão indisponíveis agora. As permissões existentes não mudam.',
+  'dialog.selectedCount': 'Pessoas selecionadas confirmadas: {count}.',
+  'dialog.deploymentAccess': 'Identidades autorizadas pela implantação: {count}. A seleção não é a única regra de acesso.',
+  'dialog.selectedRetired': 'Este compartilhamento mantém o escopo antigo de “colegas específicos”; os novos compartilhamentos oferecem apenas os dois modos acima.',
+  'dialog.description': 'Crie um link do Liveshare somente leitura para {title}',
+  'dialog.relay': 'Endereço do serviço de compartilhamento',
+
+
+  'dialog.relaySaved': 'Salvo. Novos compartilhamentos usam este endereço.',
+  'dialog.relayInvalid': 'Informe um endereço completo começando com http:// ou https://.',
+  'dialog.relayCurrent': 'Endereço vigente',
+  'dialog.relayUnset': 'Nenhum endereço definido',
+  'dialog.relaySource.unset': 'Não definido',
+  'dialog.relaySource.saved': 'Endereço salvo',
+  'dialog.relayVerified': 'Verificado neste endereço',
+  'dialog.relayUnverified': 'Não verificado neste endereço',
+  'dialog.relayReverify': 'O endereço mudou; entre novamente no novo endereço.',
+  'dialog.relayUnsavedHint': 'Este endereço ainda não foi salvo; salve-o para que entre em vigor.',
+  'dialog.identity.expired': 'Sua sessão expirou. Entre novamente antes de criar um compartilhamento.',
+  'dialog.identity.unverified': 'Você não entrou, portanto não pode criar um compartilhamento.',
+  'dialog.identity.relayChanged': 'O login atual pertence a outro endereço Relay. Entre novamente neste endereço.',
+  'dialog.identity.unknown': 'O status de login não está disponível agora. Tente novamente mais tarde; nenhum compartilhamento é criado antes do login.',
+  'dialog.identity.retry': 'Tentar novamente',
+  'dialog.identity.verify': 'Entrar',
+  'dialog.identity.reverify': 'Entrar novamente',
+  'dialog.identity.verifyBlocked': 'Salve o endereço e confirme que ele responde antes de entrar.',
+  'dialog.identity.loginOpening': 'Iniciando login…',
+  'dialog.identity.loginWaiting': 'Conclua o login na janela que foi aberta.',
+  'dialog.identity.loginVerifying': 'Confirmando o resultado do login…',
+  'dialog.identity.loginDone': 'Login efetuado; lendo o estado da conta.',
+  'dialog.identity.loginCancelled': 'Login cancelado; nenhuma credencial foi salva.',
+  'dialog.identity.loginExpired': 'Este login expirou; comece novamente.',
+  'dialog.identity.loginMismatch': 'A resposta de login não pertencia a esta solicitação e foi ignorada.',
+  'dialog.identity.loginReplayed': 'Este login já foi usado; comece novamente.',
+  'dialog.identity.loginUnavailable': 'Não é possível iniciar o login: o Relay está indisponível ou este endereço não o suporta.',
+  'dialog.identity.loginBlocked': 'Não é possível abrir a janela de login (o navegador pode ter bloqueado). Permita pop-ups e tente novamente.',
+  'dialog.identity.loginFailed': 'O login não foi concluído. Tente novamente.',
+  'dialog.identity.expires': 'Válido até {time}',
+  'dialog.identity.renewed': 'Renovado automaticamente dentro da autorização concedida.',
+  'dialog.identity.relayUnsupported': 'O Relay neste endereço ainda não verifica identidades. Atualize-o antes de criar um compartilhamento; esta página não criará um anônimo.',
+  'dialog.expiry': 'Expiração',
+  'dialog.expiry.never': 'Nunca',
+  'dialog.expiry.hour': 'Em 1 hora',
+  'dialog.expiry.day': 'Em 24 horas',
+  'dialog.expiry.week': 'Em 7 dias',
+  'dialog.expiry.until': 'Até {time}',
+  'dialog.linkSharing': 'Compartilhamento por link',
+  'dialog.help': 'Compartilha apenas esta sessão; a permissão da sessão decide o que o espectador pode fazer, e você pode interromper a qualquer momento em Gerenciar compartilhamentos.',
+  'dialog.mode.open': 'Qualquer pessoa na organização com o link',
+  'dialog.mode.selected': 'Colegas específicos',
+  'dialog.expiry.clear': 'Nunca expira',
+  'dialog.create': 'Criar compartilhamento',
+  'dialog.creating': 'Criando…',
+  'dialog.cancel': 'Cancelar',
+  'dialog.copy': 'Copiar link',
+  'dialog.copied': 'Copiado',
+  'dialog.manage': 'Gerenciar compartilhamentos',
+  'dialog.hostUnavailable': 'Não é possível acessar o serviço de compartilhamento do DSH Liveshare.',
+  'dialog.testing': 'Conectando ao serviço de compartilhamento…',
+  'dialog.testOk': 'Conexão com o Relay normal',
+  'dialog.testWarn': 'O Relay responde por HTTP, mas o registro não foi concluído e o host não informou o motivo. Ainda é possível criar o compartilhamento; o gateway tenta novamente.',
+  'dialog.testFail': 'A conexão com o Relay falhou (o host não informou o motivo).',
+
+
+
+
+  'dialog.addressHint': 'Salve primeiro o endereço do serviço de compartilhamento.',
+
+  'dialog.connectivityChecking': 'Testando se o endereço do serviço de compartilhamento responde…',
+
+  'dialog.permissionChecking': 'Verificando se este host pode publicar neste endereço…',
+  'dialog.permissionOk': 'Login efetuado; este host pode publicar compartilhamentos.',
+  'dialog.permissionPending': 'Este endereço precisa ser verificado antes de criar um compartilhamento.',
+  'dialog.permissionFailed': 'A verificação de permissão não foi concluída (o host não informou o motivo).',
+  'dialog.outgoing': 'Compartilhados por mim',
+  'dialog.noOutgoing': 'Nenhuma sessão compartilhada ainda',
+  'dialog.share.online': 'Online',
+  'dialog.share.offline': 'Offline',
+  'dialog.open': 'Abrir',
+  'dialog.stop': 'Parar compartilhamento',
+  'dialog.stopFailed': 'Falha ao parar o compartilhamento. Tente novamente.',
+  'manage.title': 'Gerenciamento de compartilhamentos',
+  'manage.open': 'Gerenciar',
+  'manage.cancelShare': 'Cancelar compartilhamento',
+  'manage.description': 'Veja o estado online e o escopo de acesso de cada compartilhamento.',
+  'manage.stop.title': 'Parar o compartilhamento?',
+  'manage.stop.description': 'O link publicado para de funcionar imediatamente, e quem estiver visualizando perde o acesso.',
+  'manage.stop.acknowledge': 'Entendo que o link publicado para de funcionar imediatamente',
+  'manage.identityExpired': 'Este login expirou, o que bloqueia apenas a criação de novos compartilhamentos. Os compartilhamentos publicados abaixo não são afetados: seus links continuam copiáveis e gerenciáveis.',
+  'manage.loading': 'Carregando compartilhamentos…',
+  'manage.empty': 'Nenhuma sessão compartilhada ainda.',
+  'manage.unavailable': 'Não foi possível carregar os compartilhamentos. Exibindo o último estado conhecido.',
+  'manage.refresh': 'Recarregar',
+  'manage.history': 'Histórico',
+  'manage.historyLoading': 'Carregando histórico…',
+  'manage.historyFailed': 'Não foi possível carregar o histórico. Tente novamente.',
+  'manage.expiresAt': 'Expira em {time}',
+  'manage.expiredAt': 'Expirou em {time}',
+  'manage.sessionMode': 'Permissão da sessão',
+  'manage.sessionModeSwitch': 'Permissão da sessão de “{title}”',
+  'manage.allowsForkSwitch': 'Se os espectadores podem ramificar “{title}”',
+  'manage.sessionModeUnsupported': 'Este Harness não retornou uma permissão de sessão, portanto ela não pode ser definida aqui.',
+  'manage.sessionModeFailed': 'A permissão da sessão não foi salva. Tente novamente.',
+  'manage.capabilities': 'Endpoints dos plugins',
+  'manage.audit.shareCreate': 'Compartilhamento criado',
+  'manage.audit.accessRequest': 'Acesso de leitura solicitado',
+  'manage.audit.accessApproved': 'Solicitação aprovada',
+  'manage.audit.accessGrant': 'Acesso de leitura concedido',
+  'manage.audit.accessRevoke': 'Acesso de leitura revogado',
+  'manage.audit.shareStop': 'Compartilhamento interrompido',
+  'manage.done': 'Concluído',
+  'viewer.title': 'Sessão somente leitura do Liveshare',
+  'viewer.sharedBy': 'Compartilhado por {owner} · {title}',
+  'viewer.readonlyNote': 'Somente leitura: você pode conduzir esta sessão, mas lê apenas arquivos dentro do escopo do compartilhamento e não altera nada.',
+  'viewer.writeUnavailableNote': 'O proprietário concedeu escrita, mas esta sessão não pode ser conduzida agora; o envio ficará disponível quando ela estiver preparada.',
+  'viewer.model.title': 'O modelo em que esta sessão é executada, escolhido pelo proprietário que a compartilhou',
+  'viewer.model.locked': 'Espectadores não podem trocar o modelo',
+  'viewer.permission.title': 'A permissão da sessão deste compartilhamento, definida pelo proprietário',
+  'viewer.permission.locked': 'Espectadores não podem alterá-la por conta própria',
+  'viewer.permission.unconfirmed': 'Ainda não confirmada',
+  'viewer.transcriptLabel': 'Conteúdo da sessão (somente leitura)',
+  'viewer.role.user': 'Usuário',
+  'viewer.role.assistant': 'Assistente',
+  'viewer.role.tool': 'Ferramenta',
+  'viewer.loading': 'Conectando à sessão…',
+  'viewer.empty': 'Esta sessão ainda não tem conteúdo para mostrar.',
+  'viewer.reconnecting': 'Conexão caiu, tentando novamente…',
+  'viewer.offline': 'O compartilhamento está offline. Ele se reconecta automaticamente.',
+  'viewer.retry': 'Tentar agora',
+  'viewer.expired': 'Este compartilhamento expirou e não concede mais acesso. Peça ao proprietário para compartilhar novamente.',
+  'viewer.revoked': 'O proprietário parou o compartilhamento ou revogou seu acesso.',
+  'viewer.reauthenticate': 'Seu login expirou. Entre novamente.',
+  'viewer.reauthenticateAction': 'Entrar novamente',
+  'viewer.status.connecting': 'Conectando ao compartilhamento…',
+  'viewer.status.invalid': 'Este link não é válido, ou esse compartilhamento foi excluído.',
+  'viewer.status.invalidHint': 'Verifique se o link está completo; você também pode pedir um novo ao proprietário.',
+  'viewer.status.offline': 'O proprietário está offline agora; a página se reconecta automaticamente.',
+  'viewer.status.offlineHint': 'Aguarde um momento ou escolha Tentar novamente; se continuar offline, contate o proprietário.',
+  'viewer.status.stopped': 'O proprietário interrompeu este compartilhamento.',
+  'viewer.status.stoppedHint': 'Peça ao proprietário para reativá-lo se você ainda precisar de acesso.',
+  'viewer.status.expired': 'Este compartilhamento expirou.',
+  'viewer.status.expiredHint': 'Peça ao proprietário para compartilhar a sessão novamente.',
+  'viewer.status.reauthenticate': 'Seu login expirou.',
+  'viewer.status.unavailable': 'O serviço de compartilhamento está indisponível agora; tentando novamente.',
+  'viewer.status.unavailableHint': 'Tente novamente em instantes; se continuar indisponível, volte mais tarde.',
+  'viewer.action.reload': 'Recarregar',
+  'viewer.action.retry': 'Tentar novamente',
+  'viewer.action.signIn': 'Entrar novamente',
+  'viewer.action.directory': 'Voltar aos compartilhamentos',
+  'viewer.expiresAt': 'Acesso até {time}',
+  'viewer.picker.ownerUnknown': 'Proprietário desconhecido',
+  'viewer.picker.version': 'DSH',
+  'viewer.picker.groupCount': '{count} compartilhamentos',
+  'viewer.picker.online': 'Online',
+  'viewer.picker.offline': 'Offline',
+  'viewer.picker.subjectLabel': 'assunto …{label}',
+  'viewer.picker.historical': 'Histórico não verificado',
+  'viewer.picker.historicalNote': 'Estes compartilhamentos são anteriores às identidades verificadas; o acesso permanece igual.',
+  'viewer.brand': 'LiveShare',
+  'viewer.home': 'Voltar ao início do LiveShare',
+  'viewer.sharedByShort': 'Compartilhado por {owner}',
+  'viewer.relayVersion': 'relé {release}',
+  'viewer.refused': 'liveshare: {subject} foi recusado com {status}',
+  'viewer.relayAnswered': 'liveshare: o Relay respondeu {status}',
+  'viewer.relaySilent': 'liveshare: o Relay não respondeu nada para {subject}',
+  'viewer.unreachable': 'liveshare: {subject} não chegou ao Relay, tentando novamente',
+  'viewer.noAnswer': 'sem resposta',
+  'viewer.row.fork': 'Ramificar sessão',
+  'viewer.row.forkSource': 'Ramificado de “{title}”',
+  'viewer.row.branchRefused': 'Não foi possível concluir a ramificação: {reason}',
+  'viewer.sharePath.unavailable': 'Esta página não pode abrir arquivos do espaço de trabalho: um compartilhamento entrega caminhos de arquivo, não o conteúdo deles.',
+  'viewer.reason.fork-not-permitted': 'O proprietário não permite ramificar esta sessão',
+  'viewer.reason.fork-not-implemented': 'Esta implantação ainda não suporta ramificação',
+  'viewer.reason.write-not-implemented': 'Esta implantação ainda não suporta escrita',
+  'viewer.reason.share-not-found': 'Esse compartilhamento não existe mais',
+  'viewer.reason.share-stopped': 'O compartilhamento foi interrompido',
+  'viewer.reason.share-expired': 'O compartilhamento expirou',
+  'viewer.reason.source-session-mismatch': 'A ramificação indicava uma sessão diferente da que o compartilhamento carrega',
+  'viewer.reason.fork-operation-conflict': 'Esta solicitação de ramificação indicava um prefixo diferente da anterior, então nenhuma sessão nova foi criada',
+  'viewer.reason.fork-enforcement-failed': 'A sessão da ramificação foi criada, mas os limites de sandbox não puderam ser instalados, então ela não pode ser usada',
+  'viewer.reason.mode-view': 'O proprietário definiu este compartilhamento como somente leitura',
+  'viewer.reason.unconfirmed': 'Não foi possível confirmar o estado atual deste compartilhamento; ele permanece somente leitura até a confirmação',
+  'viewer.reason.fork-viewer-unknown': 'O Relay não confirmou sua identidade, então a ramificação não pode ser criada',
+  'viewer.reason.fork-unknown-child': 'Esta sessão não é uma ramificação de um compartilhamento',
+  'viewer.reason.fork-viewer-mismatch': 'Essa ramificação pertence a outro espectador',
+  'viewer.reason.fork-source-revoked': 'O compartilhamento de origem desta ramificação não está mais ativo',
+  'viewer.reason.fork-ceiling-uninstalled': 'Este host não instalou os limites de execução somente leitura',
+  'viewer.reason.fork-prepare-failed': 'O host não pôde preparar esta ramificação, então esta ação não foi executada',
+  'viewer.reason.share-not-writable': 'O proprietário não permite escrita nesta sessão',
+  'viewer.reason.source-write-unavailable': 'Este host não pôde confinar a sessão compartilhada, então não pode conduzi-la',
+  'viewer.reason.prompt-identity-missing': 'Este envio não levava uma identidade de solicitação para atribuir, então o host não o executou',
+  'viewer.reason.viewer-not-authorized': 'Sua conta não tem mais acesso a este compartilhamento',
+  'viewer.reason.liveshare/read-only': 'Esta sessão está fora do compartilhamento que você possui, então nada foi gravado',
+}
+
+/** Stable locale keys consumed by the share dialog and the viewer surfaces. */
+export type LiveshareKey = keyof typeof zh
+
+/**
+ * Translate one dictionary key in the active language.
+ *
+ * The viewer surfaces read their copy through the client locale seat — the same dictionary the owner's
+ * own dialogs register — so a reader's chosen language, not the browser alone, decides what the page
+ * states. Passing the seat explicitly keeps every helper below independent of where it is rendered.
+ */
+export type ViewerTranslate = Translate<LiveshareKey>
+
+/**
+ * Copy for one stable reason code the owner host or the Relay closed an ability with.
+ *
+ * The Relay's capability answer carries one of its own stable codes — `fork-not-permitted`,
+ * `share-stopped`, `share-expired`, `viewer-not-authorized` — and a code this build does not know is
+ * stated as the code itself: the page never invents copy for a reason it was not told, and never
+ * hides one it was.
+ * @param t - Translate seat bound to this package's namespace.
+ * @param code - Stable reason code carried by the share's abilities.
+ * @returns The localized reason.
+ */
+export function viewerReasonText(t: ViewerTranslate, code: string): string {
+  const key = `viewer.reason.${code}`
+  return Object.hasOwn(zh, key) ? t(key as LiveshareKey) : code
+}
+
+/**
+ * What this page states for one refusal it knows, and nothing for one it does not.
+ *
+ * The reason is this page's own words for the stable code, with that code beside it so a reader can
+ * quote what was refused. The code is the whole of what this page can vouch for: the Host's own
+ * message for a refusal is composed from whatever its service raised, and may name a path, a
+ * credential, or another reader's Session, so this page never states any of it — a reason a reader has
+ * to read the Host's own words for is the owner's to look up, not this page's to spread. A code this
+ * build does not know stays unstated here, and the surface then keeps the Host's message with its code.
+ * @param t - Translate seat bound to this package's namespace.
+ * @param code - Stable code carried by the refusal.
+ * @returns The stated refusal, or undefined when this page does not know that code.
+ */
+export function viewerRefusalText(t: ViewerTranslate, code: string): string | undefined {
+  if (!Object.hasOwn(zh, `viewer.reason.${code}`)) return undefined
+  return `${viewerReasonText(t, code)} (${code})`
+}
diff --git a/packages/experimental/liveshare/src/client/owner-display.ts b/packages/experimental/liveshare/src/client/owner-display.ts
new file mode 100644
index 0000000000..0605492781
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/owner-display.ts
@@ -0,0 +1,78 @@
+/**
+ * The name the owner's own identity carries, shared with surfaces that do not
+ * receive the owner status as props.
+ *
+ * The durable message source names a reader by subject id alone. When that
+ * reader is the owner sending through their own viewer page, the owner host
+ * already knows the display name; this store lets the attribution line use it
+ * without persisting a display name into Session logs.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/owner-display
+ */
+
+import { useSyncExternalStore } from 'react'
+import type { OwnerShares } from './owner-shares.ts'
+import { readOwnerIdentity } from './owner-identity.ts'
+
+/** Display facts one verified owner identity carries. */
+export interface OwnerDisplay {
+  /** Subject the owner identity belongs to. */
+  readonly subjectId?: string
+  /** Verified display name; absent when the identity published none. */
+  readonly displayName?: string
+}
+
+let current: OwnerDisplay = {}
+const listeners = new Set<() => void>()
+
+/**
+ * Record the owner identity the host reported.
+ * @param identity - Subject and display name, when the host reported a verified identity.
+ */
+export function rememberOwnerDisplay(identity: OwnerDisplay): void {
+  if (identity.subjectId === current.subjectId && identity.displayName === current.displayName) return
+  current = identity
+  for (const listener of [...listeners]) listener()
+}
+
+/** Forget the name when the face unloads or the identity stops being verified. */
+export function forgetOwnerDisplay(): void {
+  if (current.subjectId === undefined && current.displayName === undefined) return
+  current = {}
+  for (const listener of [...listeners]) listener()
+}
+
+/**
+ * Read the owner identity the host reports and remember its display name.
+ *
+ * A host or carrier without the read leaves the store empty; a read that fails
+ * or is no longer verified forgets a stale name instead of keeping it.
+ * @param shares - Owner share management carrying the identity read.
+ * @returns Nothing; the store holds the result.
+ */
+export async function rememberOwnerIdentity(shares: OwnerShares): Promise<void> {
+  if (typeof shares.identity !== 'function') return
+  try {
+    const reported = await shares.identity({})
+    if (!reported.ok) { forgetOwnerDisplay(); return }
+    const identity = readOwnerIdentity(reported.value, '')
+    if (identity.state === 'verified') rememberOwnerDisplay(identity)
+    else forgetOwnerDisplay()
+  } catch {
+    forgetOwnerDisplay()
+  }
+}
+
+/**
+ * The owner's display facts for components that cannot receive the owner hook.
+ * @returns The current owner display facts.
+ */
+export function useOwnerDisplay(): OwnerDisplay {
+  return useSyncExternalStore(
+    (listener) => {
+      listeners.add(listener)
+      return () => { listeners.delete(listener) }
+    },
+    () => current,
+  )
+}
diff --git a/packages/experimental/liveshare/src/client/owner-identity-login.ts b/packages/experimental/liveshare/src/client/owner-identity-login.ts
new file mode 100644
index 0000000000..4f87eddbb4
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/owner-identity-login.ts
@@ -0,0 +1,220 @@
+/**
+ * Owner identity and Relay sign-in state for the share dialog.
+ *
+ * The owner host is the authority: it verifies the login, holds the credential, renews it while the
+ * authorization lasts, and refuses a share it cannot attribute to a verified identity. This hook only
+ * states what the host reported, and states nothing it did not report — an unreadable or absent answer
+ * is `unknown`, never a guess from a display name.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/owner-identity-login
+ */
+
+import { useEffect, useRef, useState } from 'react'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import { identitySubjectLabel } from '../owner-identity.ts'
+import type { NS } from './locales.ts'
+import { readOwnerIdentity, UNKNOWN_OWNER_IDENTITY, type OwnerIdentityStatus } from './owner-identity.ts'
+import {
+  beginOwnerLogin, hostOwnerLogin,
+  type OwnerLoginFailure, type OwnerLoginPhase,
+} from './owner-login.ts'
+import type { OwnerShares } from './owner-shares.ts'
+
+/** One sign-in attempt's state, or nothing while no attempt was started. */
+export interface OwnerLoginAttempt {
+  readonly phase: OwnerLoginPhase
+  readonly failure?: OwnerLoginFailure
+}
+
+/** Inputs the share dialog supplies to its owner identity state. */
+export interface OwnerIdentityLoginOptions {
+  /** Owner share management the dialog addresses. */
+  readonly shares: OwnerShares
+  /** Address in force, as the host named it; the identity status is keyed on this address. */
+  readonly relay: string | undefined
+  /** Localized copy. */
+  readonly t: PropsLocale<typeof NS>['t']
+  /** Clear the states a finished sign-in replaced, before the status is re-read. */
+  readonly onVerified: () => void
+}
+
+/** Owner identity and sign-in state the dialog's address row and status line present. */
+export interface OwnerIdentityLogin {
+  /** The status the host reported for the address in force. */
+  readonly status: OwnerIdentityStatus
+  /** The one attempt this dialog started, or nothing while none was started. */
+  readonly login: OwnerLoginAttempt | undefined
+  /** Whether a started attempt is still in flight. */
+  readonly busy: boolean
+  /** Whether the host reported an identity this page must verify before it may create a share. */
+  readonly needsVerification: boolean
+  /** Re-read the identity status for the address in force. */
+  readonly refresh: () => void
+  /** Start the one sign-in attempt this dialog runs, at the address in force. */
+  readonly begin: () => void
+  /**
+   * Name the verified identity row shows: the host's name, or a label derived from the subject.
+   * @returns The name, or an empty string when the host reported a subject-less identity.
+   */
+  readonly name: () => string
+  /** What an identity row that is not verified states instead of a name, and what to do about it. */
+  readonly stateLine: () => string
+  /**
+   * Credential detail a verified row keeps as a tooltip rather than a stacked line.
+   * @returns The expiry line, with the renewal note when the host reported one.
+   */
+  readonly tooltip: () => string | undefined
+  /**
+   * Copy for the phase of the attempt in flight, and the reason a failed one states.
+   * @param phase - Phase the attempt reported.
+   * @param failure - Reason it ended without a verified identity, when it stated one.
+   * @returns The line the status area states for that attempt.
+   */
+  readonly line: (phase: OwnerLoginPhase, failure: OwnerLoginFailure | undefined) => string
+}
+
+/**
+ * Read the owner identity the host reports and drive its one Relay sign-in attempt.
+ * @param options - Owner share management, the address in force, localized copy, and the verified hook.
+ * @returns The identity status, the attempt, and the copy its row states.
+ */
+export function useOwnerIdentityLogin(options: OwnerIdentityLoginOptions): OwnerIdentityLogin {
+  const { shares, relay, t, onVerified } = options
+  const [ownerIdentity, setOwnerIdentity] = useState<OwnerIdentityStatus>(UNKNOWN_OWNER_IDENTITY)
+  const [identityRead, setIdentityRead] = useState(0)
+  /** What the one sign-in attempt this dialog started is doing; nothing while none was started. */
+  const [login, setLogin] = useState<OwnerLoginAttempt>()
+  const loginAttempt = useRef<{ cancel(): void }>()
+  const mounted = useRef(true)
+
+  // Closing this dialog ends the one attempt it started: the Relay popup closes and the host drops
+  // the transaction, so no code or credential outlives the page that began it.
+  useEffect(() => () => {
+    mounted.current = false
+    loginAttempt.current?.cancel()
+  }, [])
+
+  useEffect(() => {
+    if (relay === undefined) return
+    let cancelled = false
+    // The status on hand describes whichever address it was read for. Naming the new address here
+    // keeps a switched Relay from presenting the previous address's verified identity while the new
+    // read is in flight, while a re-read of the same address keeps what it already stated.
+    setOwnerIdentity(current => current.relay === relay
+      ? current
+      : { state: 'unknown', relay })
+    const load = async (): Promise<void> => {
+      try {
+        const reported = await shares.identity({ relay })
+        if (!cancelled) setOwnerIdentity(readOwnerIdentity(reported.ok ? reported.value : undefined, relay))
+      } catch {
+        if (!cancelled) setOwnerIdentity({ state: 'unknown', relay })
+      }
+    }
+    void load()
+    // The verify call to action leaves this page; whatever the Relay hands back on return, the host's
+    // own answer is the fact this row states, so coming back re-reads it instead of trusting a guess.
+    const refresh = (): void => { if (!document.hidden) setIdentityRead(count => count + 1) }
+    window.addEventListener('focus', refresh)
+    document.addEventListener('visibilitychange', refresh)
+    return () => {
+      cancelled = true
+      window.removeEventListener('focus', refresh)
+      document.removeEventListener('visibilitychange', refresh)
+    }
+  }, [relay, identityRead, shares])
+
+  /**
+   * Sign the owner in: the host mints one transaction, the Relay's popup hands back one code.
+   *
+   * The page submits that code only to its own host, which redeems it and stores the credential; this
+   * dialog reads the host's answer back the same way it reads any other identity status.
+   */
+  const begin = (): void => {
+    /* v8 ignore next -- both sign-in controls are disabled until the Host named an address. */
+    if (relay === undefined || relay === '') return
+    loginAttempt.current?.cancel()
+    setLogin({ phase: 'opening' })
+    loginAttempt.current = beginOwnerLogin({
+      host: hostOwnerLogin(relay),
+      page: window,
+      report: (phase, failure) => {
+        if (!mounted.current) return
+        setLogin({ phase, ...(failure === undefined ? {} : { failure }) })
+        // The host's own answer is the fact this row states, so a finished attempt reads it again.
+        // The permission result belonged to the credential that attempt replaced, so it is re-asked.
+        if (phase === 'verified') {
+          onVerified()
+          setIdentityRead(count => count + 1)
+        }
+      },
+    })
+  }
+
+  const refresh = (): void => { setIdentityRead(count => count + 1) }
+
+  /** Whether the host reported an identity this page must verify before it may create a share. */
+  const needsVerification = ownerIdentity.state === 'expired'
+    || ownerIdentity.state === 'unverified'
+    || ownerIdentity.state === 'relay-changed'
+
+  /**
+   * Name the verified identity row shows: the host's name, or a label derived from the subject.
+   * @returns The name, or an empty string when the host reported a subject-less identity.
+   */
+  const name = (): string => {
+    if (ownerIdentity.displayName !== undefined) return ownerIdentity.displayName
+    return ownerIdentity.subjectId === undefined ? '' : identitySubjectLabel(ownerIdentity.subjectId)
+  }
+
+  /** What an identity row that is not verified states instead of a name, and what to do about it. */
+  const stateLine = (): string => {
+    if (ownerIdentity.state === 'expired') return t('dialog.identity.expired')
+    if (ownerIdentity.state === 'relay-changed') return t('dialog.identity.relayChanged')
+    if (ownerIdentity.state === 'relay-unsupported') return t('dialog.identity.relayUnsupported')
+    if (ownerIdentity.state === 'unverified') return t('dialog.identity.unverified')
+    return t('dialog.identity.unknown')
+  }
+
+  /**
+   * Credential detail a verified row keeps as a tooltip rather than a stacked line.
+   * @returns The expiry line, with the renewal note when the host reported one.
+   */
+  const tooltip = (): string | undefined => {
+    if (ownerIdentity.state !== 'verified' || ownerIdentity.expiresAt === undefined) return undefined
+    const expiry = t('dialog.identity.expires', { time: new Date(ownerIdentity.expiresAt).toLocaleString() })
+    return ownerIdentity.renewed === true ? `${expiry} · ${t('dialog.identity.renewed')}` : expiry
+  }
+
+  /**
+   * Copy for the phase of the attempt in flight, and the reason a failed one states.
+   * @param phase - Phase the attempt reported.
+   * @param failure - Reason it ended without a verified identity, when it stated one.
+   * @returns The line the status area states for that attempt.
+   */
+  const line = (phase: OwnerLoginPhase, failure: OwnerLoginFailure | undefined): string => {
+    if (phase === 'opening') return t('dialog.identity.loginOpening')
+    if (phase === 'waiting') return t('dialog.identity.loginWaiting')
+    if (phase === 'verifying') return t('dialog.identity.loginVerifying')
+    if (failure === 'cancelled') return t('dialog.identity.loginCancelled')
+    if (failure === 'expired') return t('dialog.identity.loginExpired')
+    if (failure === 'mismatch') return t('dialog.identity.loginMismatch')
+    if (failure === 'replayed') return t('dialog.identity.loginReplayed')
+    if (failure === 'unavailable') return t('dialog.identity.loginUnavailable')
+    if (failure === 'blocked') return t('dialog.identity.loginBlocked')
+    return t('dialog.identity.loginFailed')
+  }
+
+  return {
+    status: ownerIdentity,
+    login,
+    busy: login !== undefined && login.phase !== 'failed' && login.phase !== 'verified',
+    needsVerification,
+    refresh,
+    begin,
+    name,
+    stateLine,
+    tooltip,
+    line,
+  }
+}
diff --git a/packages/experimental/liveshare/src/client/owner-identity.ts b/packages/experimental/liveshare/src/client/owner-identity.ts
new file mode 100644
index 0000000000..57af912236
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/owner-identity.ts
@@ -0,0 +1,169 @@
+/**
+ * Owner identity and credential state for the share dialog.
+ *
+ * The owner host is the authority: it verifies the login, holds the credential, renews it while the
+ * authorization lasts, and refuses a share it cannot attribute to a verified identity. The client
+ * only states what the host reported, and states nothing it did not report — an unreadable or
+ * absent answer is `unknown`, never a guess from a display name.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/owner-identity
+ */
+
+/**
+ * What the host reports about the owner identity this browser will share under.
+ *
+ * `verified` may create shares, `expired` and `unverified` must verify first, `relay-changed` means
+ * the status on hand belongs to another Relay address and cannot be reused, `relay-unsupported`
+ * means the address in force cannot verify identities at all, and `unknown` means the host reported
+ * nothing the client can read.
+ */
+export type OwnerIdentityState =
+  | 'verified' | 'expired' | 'unverified' | 'relay-changed' | 'relay-unsupported' | 'unknown'
+
+/** Owner identity and credential facts the dialog presents. */
+export interface OwnerIdentityStatus {
+  readonly state: OwnerIdentityState
+  /** Relay address the reported status was read for; a status never applies to another address. */
+  readonly relay: string
+  /** Verified display name, when the identity carried one. */
+  readonly displayName?: string
+  /** Avatar the identity provider published for this subject, when it published one. */
+  readonly avatarUrl?: string
+  /** Subject the verified identity belongs to; the label of last resort when no name exists. */
+  readonly subjectId?: string
+  /** ISO time the owner credential stops being valid. */
+  readonly expiresAt?: string
+  /** True when the host renewed the credential without asking the owner to sign in again. */
+  readonly renewed?: boolean
+}
+
+/** The one status the client keeps when the host reported none it can read. */
+export const UNKNOWN_OWNER_IDENTITY: OwnerIdentityStatus = { state: 'unknown', relay: '' }
+
+/**
+ * Read one non-empty string field from a decoded JSON object.
+ * @param source - Decoded object, absent when its endpoint could not be read.
+ * @param key - Field to read.
+ * @returns The value, or undefined when the field is absent, empty, or not a string.
+ */
+function readText(source: Record<string, unknown> | undefined, key: string): string | undefined {
+  const value = source?.[key]
+  return typeof value === 'string' && value !== '' ? value : undefined
+}
+
+/** Avatar URLs a browser may load: a page never renders an image from another scheme. */
+const HTTP_IMAGE = /^https?:\/\//iu
+
+/**
+ * Read the host's identity answer for one Relay address.
+ *
+ * The host names the state directly; a state this build does not know, or an answer for another
+ * Relay, is reported as such instead of being treated as verified or unverified.
+ * @param value - Decoded `identity` answer from the owner Remote, or undefined when unreadable.
+ * @param relay - Relay address the dialog is addressing.
+ * @returns The status the dialog presents.
+ */
+export function readOwnerIdentity(value: unknown, relay: string): OwnerIdentityStatus {
+  if (typeof value !== 'object' || value === null) {
+    return relay === '' ? UNKNOWN_OWNER_IDENTITY : { state: 'unknown', relay }
+  }
+  const body = value as Record<string, unknown>
+  const state = readText(body, 'state')
+  if (state === undefined) return { state: 'unknown', relay }
+  if (state !== 'verified' && state !== 'expired' && state !== 'unverified' && state !== 'relay-unsupported') {
+    return { state: 'unknown', relay }
+  }
+  const reported = readText(body, 'relay')
+  // A status read for another Relay address is not this page's credential: reusing it would carry
+  // one Relay's verified identity onto a different one.
+  if (reported !== undefined && relay !== '' && reported !== relay) {
+    return { state: 'relay-changed', relay, ...(readText(body, 'displayName') === undefined
+      ? {}
+      : { displayName: readText(body, 'displayName') as string }) }
+  }
+  const displayName = readText(body, 'displayName')
+  const avatarUrl = readText(body, 'avatarUrl')
+  const subjectId = readText(body, 'subjectId')
+  const expiresAt = readText(body, 'expiresAt')
+  return {
+    state,
+    relay,
+    ...(displayName === undefined ? {} : { displayName }),
+    ...(avatarUrl === undefined || !HTTP_IMAGE.test(avatarUrl) ? {} : { avatarUrl }),
+    ...(subjectId === undefined ? {} : { subjectId }),
+    ...(expiresAt === undefined ? {} : { expiresAt }),
+    ...(body.renewed === true ? { renewed: true } : {}),
+  }
+}
+
+/**
+ * Whether this status lets the dialog create a share.
+ *
+ * Only a verified identity does. An unreadable status refuses too: a host that cannot state what it
+ * verified must not be assumed to refuse on its own, and the page is not the place to find out. The
+ * host and the Relay refuse independently in every case; this decision only keeps the page from
+ * offering an action it cannot attribute.
+ * @param status - Status the dialog presents.
+ * @returns True when the create action may run.
+ */
+export function mayCreateShare(status: OwnerIdentityStatus): boolean {
+  return status.state === 'verified'
+}
+
+/** Query parameters whose name marks a credential or a one-time hand-off, in any spelling. */
+const SECRET_PARAMETER = /token|secret|credential|ticket|signature|passcode/iu
+
+/** Short names that are a credential when they stand alone. */
+const SECRET_PARAMETER_EXACT = new Set(['code', 'key', 'sig', 'apikey'])
+
+/**
+ * Whether one query parameter names a credential rather than page state.
+ * @param key - Parameter name as the address spelled it.
+ * @returns True when the value must not travel onward.
+ */
+function isSecretParameter(key: string): boolean {
+  const lower = key.toLowerCase()
+  return SECRET_PARAMETER.test(lower) || SECRET_PARAMETER_EXACT.has(lower)
+}
+
+/**
+ * The address a login round trip may return to.
+ *
+ * The page may have been opened with an owner startup token or another one-time hand-off in its own
+ * query. Passing that address onward verbatim would hand the secret to the Relay and to whatever the
+ * callback navigates to, so every credential-looking parameter is dropped and the fragment, which a
+ * single-page app may also use for one-time state, never leaves this page.
+ * @param current - The page's own address.
+ * @returns The return address without credentials or fragment, or the current address when unparsable.
+ */
+export function loginReturnUrl(current: string): string {
+  let url: URL
+  try {
+    url = new URL(current)
+  } catch (_unparsableAddress) {
+    return current
+  }
+  const kept = new URLSearchParams()
+  for (const [key, value] of url.searchParams) {
+    if (isSecretParameter(key)) continue
+    kept.append(key, value)
+  }
+  url.search = kept.toString()
+  url.hash = ''
+  return url.toString()
+}
+
+/**
+ * The Relay entry that verifies an owner, asked to return to a sanitized copy of this address.
+ *
+ * The owner host and the Relay own what that entry does — the client only names it in one place, so
+ * confirming the real path (and whether it delivers the host credential rather than a viewer login)
+ * is a one-line change here.
+ * @param relay - Relay address in force.
+ * @param current - The page's own address.
+ * @returns The absolute verification entry with its return address.
+ */
+export function ownerLoginHref(relay: string, current: string): string {
+  const base = relay.replace(/\/+$/u, '')
+  return `${base}/__liveshare/auth/start?returnTo=${encodeURIComponent(loginReturnUrl(current))}`
+}
diff --git a/packages/experimental/liveshare/src/client/owner-login.ts b/packages/experimental/liveshare/src/client/owner-login.ts
new file mode 100644
index 0000000000..74de37c5ee
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/owner-login.ts
@@ -0,0 +1,400 @@
+/**
+ * The owner's own Relay sign-in, driven from the page that is about to share.
+ *
+ * The owner host is the authority here as it is for every other identity fact: it mints one
+ * short-lived transaction bound to the Relay address, the Relay instance, and this page's origin, and
+ * it keeps that transaction's verifier to itself. This page opens the Relay's sign-in in a popup,
+ * accepts the one-time code that popup hands back by `postMessage` — only from the origin the host
+ * named, only from that popup, and only for the state the host minted — and submits the code with its
+ * state to its own host. The host redeems them against the Relay and stores the credential; the page
+ * reads the result back the way it reads any other identity answer.
+ *
+ * The page holds no credential, reads no cookie, and writes nothing to the URL, to storage, or to a
+ * log: the code lives from the popup's message to the host's answer and nowhere else.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/owner-login
+ */
+
+import { readOwnerIdentity, type OwnerIdentityStatus } from './owner-identity.ts'
+import { OWNER_ROUTES } from './owner-routes.ts'
+
+/** Message type the Relay's sign-in page hands its opener. */
+export const OWNER_LOGIN_CODE_TYPE = 'liveshare-auth-code'
+
+/** Message type this page answers with, so that page closes instead of navigating on. */
+export const OWNER_LOGIN_ACK_TYPE = 'liveshare-auth-ack'
+
+/** Same-origin host endpoints one attempt uses. */
+const START_ROUTE = OWNER_ROUTES.ownerLoginStart
+const REDEEM_ROUTE = OWNER_ROUTES.ownerLoginRedeem
+const CANCEL_ROUTE = OWNER_ROUTES.ownerLoginCancel
+
+/** What one sign-in attempt is doing, as the dialog states it. */
+export type OwnerLoginPhase = 'opening' | 'waiting' | 'verifying' | 'verified' | 'failed'
+
+/** Why one attempt ended without a verified identity, as the host named it. */
+export type OwnerLoginFailure =
+  | 'blocked' | 'cancelled' | 'expired' | 'mismatch' | 'replayed' | 'unavailable' | 'failed'
+
+/** One host-minted transaction: where to sign in, what it is bound to, and until when. */
+export interface OwnerLoginTicket {
+  readonly authorizeUrl: string
+  readonly state: string
+  /**
+   * Exact origin the Relay's own sign-in page posts from, as the host binds it.
+   *
+   * The origin the host answered *this page* for is not this: trusting that back would accept a
+   * message from whatever page happens to be at this address, and a ticket that names no sender
+   * origin leaves the attempt unable to verify any message at all.
+   */
+  readonly messageOrigin: string
+  /** UTC deadline this transaction stops being redeemable at, when the host stated one. */
+  readonly expiresAt?: string
+}
+
+/** One attempt's answer: the value the host named, or the reason it could not. */
+export type OwnerLoginResult<T> =
+  | { readonly ok: true; readonly value: T }
+  | { readonly ok: false; readonly reason: OwnerLoginFailure }
+
+/** The same-origin host face one attempt submits to. */
+export interface OwnerLoginHost {
+  start(): Promise<OwnerLoginResult<OwnerLoginTicket>>
+  redeem(code: string, state: string): Promise<OwnerLoginResult<OwnerIdentityStatus>>
+  cancel(state: string): Promise<void>
+}
+
+/**
+ * Minimal popup window one sign-in attempt reserves and drives.
+ *
+ * The flow reads \`closed\`, navigates \`location.href\`, calls \`close\`, and posts the acknowledgement, so
+ * a page's \`open\` need not return the whole browser \`Window\`.
+ */
+export interface OwnerLoginPopup {
+  /** Whether the sign-in page closed the window. */
+  closed: boolean
+  /** Address the flow navigates to the sign-in URL. */
+  location: { href: string }
+  /** Close the reserved window. */
+  close(): void
+  /** Post the acknowledgement the sign-in page waits for. */
+  postMessage(message: unknown, targetOrigin: string): void
+}
+
+/**
+ * The browser page one sign-in attempt drives: the popup it reserves, the messages it listens for,
+ * and the timer it polls with.
+ */
+export interface OwnerLoginPage {
+  /** Open the Relay's sign-in; null when the browser refused a popup for this gesture. */
+  open(url: string, name: string, features: string): OwnerLoginPopup | null
+  addEventListener(type: 'message', listener: (event: MessageEvent) => void): void
+  removeEventListener(type: 'message', listener: (event: MessageEvent) => void): void
+  setInterval(handler: () => void, ms: number): number
+  clearInterval(id: number): void
+}
+
+/** Stable host error codes, and the reason this page states for each. */
+const FAILURE_CODES: Readonly<Record<string, OwnerLoginFailure>> = {
+  'owner-login-cancelled': 'cancelled',
+  'owner-login-expired': 'expired',
+  'owner-login-mismatch': 'mismatch',
+  'owner-login-replayed': 'replayed',
+  'owner-login-unavailable': 'unavailable',
+  'owner-login-failed': 'failed',
+}
+
+/**
+ * Read one host answer's failure code.
+ * @param value - Decoded answer body, absent when the answer could not be read.
+ * @returns The reason this page states, or undefined when the answer named none it knows.
+ */
+export function readOwnerLoginFailure(value: unknown): OwnerLoginFailure | undefined {
+  if (typeof value !== 'object' || value === null) return undefined
+  const code = (value as Record<string, unknown>).error
+  return typeof code === 'string' ? FAILURE_CODES[code] : undefined
+}
+
+/**
+ * Read the one-time code a sign-in popup handed this page, or nothing when the message is not it.
+ *
+ * An attempt has exactly one legitimate sender, and this is where that is enforced: the origin the
+ * host bound the transaction to, the popup the host's ticket opened, the message type this page
+ * expects, and the state that transaction minted. A message from another window, another origin,
+ * another state, or one that is not even shaped like a code is dropped without an answer and without
+ * a trace, so no other page can hand this one a code it would submit.
+ * @param event - Message event this page received.
+ * @param expected - Origin, popup, and state the host bound this attempt to.
+ * @returns The code and state to submit, or undefined when the message is not this attempt's.
+ */
+export function readOwnerLoginCode(
+  event: { readonly origin: string; readonly source: unknown; readonly data: unknown },
+  expected: { readonly origin: string; readonly source: unknown; readonly state: string },
+): { readonly code: string; readonly state: string } | undefined {
+  if (expected.origin === '' || expected.origin === '*') return undefined
+  if (event.origin !== expected.origin) return undefined
+  if (expected.source === null || expected.source === undefined) return undefined
+  if (event.source !== expected.source) return undefined
+  const data = event.data
+  if (typeof data !== 'object' || data === null) return undefined
+  const payload = data as Record<string, unknown>
+  if (payload.type !== OWNER_LOGIN_CODE_TYPE) return undefined
+  if (typeof payload.state !== 'string' || payload.state === '' || payload.state !== expected.state) {
+    return undefined
+  }
+  const code = payload.code
+  if (typeof code !== 'string' || code === '') return undefined
+  return { code, state: payload.state }
+}
+
+/** Read one non-empty string field from a decoded JSON object. */
+function readText(source: Record<string, unknown>, key: string): string | undefined {
+  const value = source[key]
+  return typeof value === 'string' && value !== '' ? value : undefined
+}
+
+/** Read one decoded JSON object, absent when the answer carried none. */
+function readRecord(value: unknown): Record<string, unknown> | undefined {
+  return typeof value === 'object' && value !== null ? value as Record<string, unknown> : undefined
+}
+
+/**
+ * Read the sign-in URL a host named, refusing anything this page must not open.
+ * @param value - Candidate URL.
+ * @returns The URL, or undefined when the host named none this page may open.
+ */
+function readLoginUrl(value: string | undefined): string | undefined {
+  if (value === undefined) return undefined
+  try {
+    const url = new URL(value)
+    return url.protocol === 'https:' || url.protocol === 'http:' ? url.href : undefined
+  } catch {
+    return undefined
+  }
+}
+
+/**
+ * Build the same-origin host face one attempt submits to.
+ *
+ * Every call goes to this page's own origin, so no credential, code, or address the host holds
+ * crosses to another party from here.
+ * @param relay - Relay address in force, so the identity answer is read for that address.
+ * @param request - Fetch-like function to post with; defaults to this page's own `fetch`.
+ * @returns The host face one attempt uses.
+ */
+export function hostOwnerLogin(
+  relay: string,
+  request: (input: string, init?: RequestInit) => Promise<Response> = (input, init) => fetch(input, init),
+): OwnerLoginHost {
+  /** Post one same-origin call and read its JSON body, or undefined when it answered none. */
+  const post = async (path: string, body?: unknown): Promise<{ status: number; value: unknown }> => {
+    const response = await request(path, {
+      method: 'POST',
+      credentials: 'same-origin',
+      headers: { 'content-type': 'application/json', accept: 'application/json' },
+      ...(body === undefined ? {} : { body: JSON.stringify(body) }),
+    })
+    const value: unknown = await response.json().catch(() => undefined)
+    return { status: response.status, value }
+  }
+  return {
+    async start() {
+      let answer: { status: number; value: unknown }
+      try {
+        answer = await post(START_ROUTE)
+      } catch {
+        return { ok: false, reason: 'unavailable' }
+      }
+      const body = readRecord(answer.value)
+      if (body === undefined || answer.status !== 200) {
+        return { ok: false, reason: readOwnerLoginFailure(answer.value) ?? 'unavailable' }
+      }
+      const authorizeUrl = readLoginUrl(readText(body, 'authorizeUrl'))
+      const state = readText(body, 'state')
+      const messageOrigin = readText(body, 'messageOrigin')
+      const expiresAt = readText(body, 'expiresAt')
+      // A ticket this page cannot use is refused rather than half-open: no wildcard origin, no
+      // address that is not a sign-in, and no transaction without its state.
+      if (
+        authorizeUrl === undefined || state === undefined
+        || messageOrigin === undefined || messageOrigin === '*'
+      ) {
+        return { ok: false, reason: 'unavailable' }
+      }
+      return {
+        ok: true,
+        value: {
+          authorizeUrl,
+          state,
+          messageOrigin,
+          ...(expiresAt === undefined ? {} : { expiresAt }),
+        },
+      }
+    },
+    async redeem(code, state) {
+      let answer: { status: number; value: unknown }
+      try {
+        answer = await post(REDEEM_ROUTE, { code, state })
+      } catch {
+        return { ok: false, reason: 'unavailable' }
+      }
+      if (answer.status !== 200) {
+        return { ok: false, reason: readOwnerLoginFailure(answer.value) ?? 'failed' }
+      }
+      // The binding this attempt is judged on is the Relay the host itself states, read before any
+      // helper defaults an address in: a body that names no Relay, an empty or non-string one, or
+      // another address is not this attempt's verified identity.
+      const statedRelay = readText(readRecord(answer.value) ?? {}, 'relay')
+      if (statedRelay === undefined) return { ok: false, reason: 'failed' }
+      if (statedRelay !== relay) return { ok: false, reason: 'mismatch' }
+      // Only a verified identity is this attempt's success: one that leaves the owner unverified is
+      // not a sign-in this page may call done.
+      const status = readOwnerIdentity(answer.value, relay)
+      if (status.state !== 'verified') {
+        return { ok: false, reason: 'failed' }
+      }
+      return { ok: true, value: status }
+    },
+    async cancel(state) {
+      try {
+        await post(CANCEL_ROUTE, { state })
+      } catch {
+        // A transaction left behind expires on its own; this page has nothing else to do about it.
+      }
+    },
+  }
+}
+
+/**
+ * Start one sign-in attempt: reserve its window, ask the host for a transaction, and take the
+ * one-time code the sign-in page hands back.
+ *
+ * The window is reserved inside the gesture that asked for it, because a window opened after an
+ * await is refused by many browsers and this flow has no safe whole-page completion to fall back on:
+ * a page that navigated away would leave nobody listening for the code. A blocked window is a named
+ * failure, and every way an attempt can end — the popup closing, the transaction expiring, the owner
+ * cancelling, a ticket that arrives after the attempt was cancelled — drops the transaction on the
+ * host instead of leaving a code redeemable behind it.
+ * @param options - Host face, page, phase reporter, and the clock the deadline is read with.
+ * @returns A handle that stops waiting for this attempt.
+ */
+export function beginOwnerLogin(options: {
+  readonly host: OwnerLoginHost
+  readonly page: OwnerLoginPage
+  readonly report: (phase: OwnerLoginPhase, failure?: OwnerLoginFailure) => void
+  readonly now?: () => number
+}): { cancel(): void } {
+  const { host, page, report } = options
+  const now = options.now ?? (() => Date.now())
+  let ticket: OwnerLoginTicket | undefined
+  let stopWaiting: (() => void) | undefined
+  let done = false
+  /** Drop one transaction on the host, best-effort: an attempt that ended leaves nothing redeemable. */
+  const drop = (state: string | undefined): void => {
+    if (state !== undefined) void host.cancel(state)
+  }
+  const finish = (phase: OwnerLoginPhase, failure?: OwnerLoginFailure): void => {
+    if (done) return
+    done = true
+    stopWaiting?.()
+    report(phase, failure)
+  }
+  const popup = page.open('', 'liveshare-owner-login', 'popup=yes,width=520,height=720')
+  if (popup === null) {
+    // Nothing was started, so there is no transaction to drop; the owner may try again.
+    report('failed', 'blocked')
+    return { cancel() {} }
+  }
+  const close = (): void => {
+    try {
+      popup.close()
+    } catch {
+      // A window already gone needs no closing.
+    }
+  }
+  report('opening')
+  void host.start().then((started) => {
+    if (!started.ok) {
+      close()
+      finish('failed', started.reason)
+      return
+    }
+    if (done) {
+      // The attempt was cancelled while the host was minting: the ticket that arrived late is dropped
+      // here rather than left redeemable by whoever holds its state.
+      drop(started.value.state)
+      return
+    }
+    if (popup.closed) {
+      drop(started.value.state)
+      finish('failed', 'cancelled')
+      return
+    }
+    const minted = started.value
+    ticket = minted
+    // The reserved window navigates to the sign-in the host named; this page never builds that address.
+    try {
+      popup.location.href = minted.authorizeUrl
+    } catch {
+      // A window this page cannot navigate is a window no code can arrive in: a dead end like a
+      // refused popup, and the owner may try again. The transaction it was minted for is dropped and
+      // the window is closed, so a ticket nobody can complete is not left redeemable behind it.
+      drop(minted.state)
+      close()
+      finish('failed', 'blocked')
+      return
+    }
+    report('waiting')
+    const deadline = minted.expiresAt === undefined ? Number.NaN : Date.parse(minted.expiresAt)
+    const onMessage = (event: MessageEvent): void => {
+      const code = readOwnerLoginCode(event, {
+        origin: minted.messageOrigin,
+        source: popup,
+        state: minted.state,
+      })
+      if (code === undefined) return
+      stopWaiting?.()
+      stopWaiting = undefined
+      // The sign-in page closes on this acknowledgement instead of navigating the opener away.
+      try {
+        popup.postMessage({ type: OWNER_LOGIN_ACK_TYPE, state: code.state }, minted.messageOrigin)
+      } catch {
+        // A window that cannot be answered closes itself; the host still redeems this code.
+      }
+      report('verifying')
+      void host.redeem(code.code, code.state).then((redeemed) => {
+        // A redemption counts as this page's sign-in only when the host read a verified identity back:
+        // an answer that leaves the owner unverified is not a success, whatever carried it here.
+        if (redeemed.ok && redeemed.value.state === 'verified') {
+          finish('verified')
+          return
+        }
+        finish('failed', redeemed.ok ? 'failed' : redeemed.reason)
+      })
+    }
+    page.addEventListener('message', onMessage)
+    const timer = page.setInterval(() => {
+      if (Number.isFinite(deadline) && now() >= deadline) {
+        drop(minted.state)
+        finish('failed', 'expired')
+        return
+      }
+      if (popup.closed) {
+        drop(minted.state)
+        finish('failed', 'cancelled')
+      }
+    }, 500)
+    stopWaiting = () => {
+      page.removeEventListener('message', onMessage)
+      page.clearInterval(timer)
+    }
+  })
+  return {
+    cancel() {
+      if (done) return
+      finish('failed', 'cancelled')
+      close()
+      drop(ticket?.state)
+    },
+  }
+}
diff --git a/packages/experimental/liveshare/src/client/owner-routes.ts b/packages/experimental/liveshare/src/client/owner-routes.ts
new file mode 100644
index 0000000000..a25bb35efe
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/owner-routes.ts
@@ -0,0 +1,20 @@
+/**
+ * Owner endpoints the share surfaces still call over HTTP.
+ *
+ * Share management moved to the `liveshareShares` Remote. The sign-in round trip stays a
+ * same-origin route because the browser opens the Relay's authorization page and the Host redeems
+ * the code it hands back, which no Remote method mediates.
+ *
+ * The served document carries the application's own base, so a browser call that names a route from
+ * the root leaves a mounted deployment behind. Every entry here is the path the owner host registers
+ * with its leading slash stripped; `verify-client-route-resolution` keeps the two forms apart.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/owner-routes
+ */
+
+/** Same-origin owner endpoints the share sign-in calls. */
+export const OWNER_ROUTES = {
+  ownerLoginCancel: 'api/liveshare.ownerLoginCancel',
+  ownerLoginRedeem: 'api/liveshare.ownerLoginRedeem',
+  ownerLoginStart: 'api/liveshare.ownerLoginStart',
+} as const
diff --git a/packages/experimental/liveshare/src/client/owner-shares.ts b/packages/experimental/liveshare/src/client/owner-shares.ts
new file mode 100644
index 0000000000..b6aebeb359
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/owner-shares.ts
@@ -0,0 +1,115 @@
+/**
+ * The owner share-management Remote the share surfaces call.
+ *
+ * Every method resolves to a `RemoteResult`, so a refusal stays a typed error branch carrying the
+ * Host's `liveshareShares/` code; the surfaces read the code instead of mapping an HTTP status. The
+ * interface is stated here rather than derived from the generated namespace so the package's client
+ * declarations name the request and result types directly.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/owner-shares
+ */
+
+import type { RemoteResult } from '@deepseek-ai/dsh-typert-protocol'
+import type {
+  CreatedShare,
+  CreateShareRequest,
+  OwnerIdentityRequest,
+  OwnerIdentityStatus,
+  OwnerRelayState,
+  OwnerShareList,
+  RelayConnectivityView,
+  RelayPublishView,
+  SetRelayRequest,
+  SetShareCapabilitiesRequest,
+  ShareAudit,
+  ShareAuditRequest,
+  ShareCapabilities,
+  ShareCapabilityOffers,
+  SharePermissions,
+  StopShareRequest,
+  StopShareResult,
+  TestPublishRequest,
+  UpdateSharePermissionsRequest,
+} from '../share-api-types.ts'
+
+/** The `liveshareShares` Remote namespace, as the owner page calls it. */
+export interface OwnerShares {
+  /**
+   * Publish one Session and store the share.
+   * @param request - Session, title, access, lifetime, and both switches the owner chose.
+   * @returns The created share's link and stored values.
+   */
+  create(request: CreateShareRequest): Promise<RemoteResult<CreatedShare>>
+
+  /**
+   * Refresh titles and Relay authority, then list this host's shares.
+   * @returns Every share this host publishes.
+   */
+  list(): Promise<RemoteResult<OwnerShareList>>
+
+  /**
+   * Stop one share locally, revoke its forks, and delete its Relay row when reachable.
+   * @param request - Share to stop.
+   * @returns Whether the Relay row still needs a retry.
+   */
+  stop(request: StopShareRequest): Promise<RemoteResult<StopShareResult>>
+
+  /**
+   * Change one share's tier, fork switch, or both.
+   * @param request - Share and the switches to change.
+   * @returns The permissions the share now carries.
+   */
+  updatePermissions(request: UpdateSharePermissionsRequest): Promise<RemoteResult<SharePermissions>>
+
+  /**
+   * Replace one share's exposed plugin endpoints.
+   * @param request - Share and the selection to store.
+   * @returns The capability selection the share now carries.
+   */
+  setCapabilities(request: SetShareCapabilitiesRequest): Promise<RemoteResult<ShareCapabilities>>
+
+  /**
+   * Read the endpoints plugins currently offer.
+   * @returns The live offer list.
+   */
+  capabilities(): Promise<RemoteResult<ShareCapabilityOffers>>
+
+  /**
+   * Read the address the owner saved, which is also the address new shares publish to.
+   * @returns The current Relay state, with both address fields absent while none is saved.
+   */
+  relay(): Promise<RemoteResult<OwnerRelayState>>
+
+  /**
+   * Choose the Relay address later shares publish to.
+   * @param request - Normalized address or null to clear the saved one.
+   * @returns The Relay state after the change.
+   */
+  setRelay(request: SetRelayRequest): Promise<RemoteResult<OwnerRelayState>>
+
+  /**
+   * Report this host's owner identity for one Relay address.
+   * @param request - Address to report, or the effective one when absent.
+   * @returns The owner identity status, without the credential.
+   */
+  identity(request: OwnerIdentityRequest): Promise<RemoteResult<OwnerIdentityStatus>>
+
+  /**
+   * Read the Relay's durable audit trail for one share.
+   * @param request - Share whose audit is read.
+   * @returns The audit events, or a structured failure when the Relay cannot answer.
+   */
+  audit(request: ShareAuditRequest): Promise<RemoteResult<ShareAudit>>
+
+  /**
+   * Check that the effective Relay answers at all.
+   * @returns The anonymous connectivity result.
+   */
+  testRelay(): Promise<RemoteResult<RelayConnectivityView>>
+
+  /**
+   * Register one throwaway share to check whether this host may publish.
+   * @param request - Session the throwaway registration names.
+   * @returns The Relay's decision about this host's credential.
+   */
+  testPublish(request: TestPublishRequest): Promise<RemoteResult<RelayPublishView>>
+}
diff --git a/packages/experimental/liveshare/src/client/share-navigation.ts b/packages/experimental/liveshare/src/client/share-navigation.ts
new file mode 100644
index 0000000000..fcf1f093ca
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/share-navigation.ts
@@ -0,0 +1,44 @@
+/** One pending request to open a Session's share dialog after switching to it. */
+
+let pending: string | undefined
+let opener: ((sessionId: string) => void) | undefined
+
+/**
+ * Bind the workspace navigation one manager click uses.
+ * @param open - Workspace Session opener, or undefined when this page has none.
+ */
+export function setManagedShareOpener(open: ((sessionId: string) => void) | undefined): void {
+  opener = open
+}
+
+/**
+ * Switch to one Session before its header action opens the share dialog.
+ * @param sessionId - Session the manager selected.
+ */
+export function openManagedSession(sessionId: string): void {
+  opener?.(sessionId)
+}
+
+/**
+ * Remember the Session whose share dialog should open once its header action mounts.
+ * @param sessionId - Session the manager selected.
+ */
+export function rememberManagedShare(sessionId: string): void {
+  pending = sessionId
+}
+
+/**
+ * Consume a pending request for one Session.
+ * @param sessionId - Session whose header action is mounting.
+ * @returns True when this Session's share dialog should open.
+ */
+export function takeManagedShare(sessionId: string): boolean {
+  if (pending !== sessionId) return false
+  pending = undefined
+  return true
+}
+
+/** Drop a request that navigation could not complete. */
+export function forgetManagedShare(): void {
+  pending = undefined
+}
diff --git a/packages/experimental/liveshare/src/client/share-options.ts b/packages/experimental/liveshare/src/client/share-options.ts
new file mode 100644
index 0000000000..c45c006581
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/share-options.ts
@@ -0,0 +1,25 @@
+/**
+ * Choice lists the share dialog's create form and stored-share edit panel both present.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/share-options
+ */
+
+import type { SegmentedControlOption } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { NS } from './locales.ts'
+import { SESSION_MODES, type ViewerSessionMode } from './viewer-capabilities.ts'
+
+/** Translate seat the dialog's choice lists read their labels through. */
+type Translate = PropsLocale<typeof NS>['t']
+
+/**
+ * The two session modes, in the order the host stores and reports them.
+ * @param t - Localized copy.
+ * @returns One option per session mode.
+ */
+export function sessionModeOptions(t: Translate): readonly SegmentedControlOption<ViewerSessionMode>[] {
+  return SESSION_MODES.map(mode => ({
+    value: mode,
+    label: t(`dialog.sessionMode.${mode}` as const),
+  }))
+}
diff --git a/packages/experimental/liveshare/src/client/share-relay-address.ts b/packages/experimental/liveshare/src/client/share-relay-address.ts
new file mode 100644
index 0000000000..d9c5e3d528
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/share-relay-address.ts
@@ -0,0 +1,365 @@
+/**
+ * Relay address state for the owner share dialog.
+ *
+ * The owner host is the authority on the address in force: it names the saved address, stores a new
+ * one, and answers the connectivity and permission checks the dialog's ordered flow runs. This hook
+ * keeps those facts and the owner's draft; the step guide itself belongs to the dialog.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/share-relay-address
+ */
+
+import { useEffect, useRef, useState } from 'react'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type { NS } from './locales.ts'
+import type { OwnerShares } from './owner-shares.ts'
+
+/** Relay state read from the mounted share host; both address fields are absent until one is saved. */
+interface RelayState {
+  readonly override?: string
+  readonly effective?: string
+}
+
+/** What the connectivity step has established for the address in force; credentials play no part. */
+export type RelayConnectivity = 'idle' | 'testing' | 'ok' | 'unreachable'
+
+/**
+ * What the permission step has established for this host at that address.
+ *
+ * `blocked` is the Relay's refusal of this host's credential, which the owner acts on by verifying
+ * again; `warn` is a failure the Relay did not decide, which keeps the gateway's retry.
+ */
+export type RelayPermission = 'idle' | 'checking' | 'ok' | 'blocked' | 'warn'
+
+/**
+ * The identity facts saving an address needs: whether the owner holds a verified credential at the
+ * address in force, and how to re-read that status once the host stored another address.
+ */
+export interface RelaySaveIdentity {
+  /** Whether the host reported a verified identity for the address in force. */
+  readonly verified: boolean
+  /** Re-read the identity status for the address the save put in force. */
+  readonly refresh: () => void
+}
+
+/** Inputs the share dialog supplies to its Relay address state. */
+export interface ShareRelayAddressOptions {
+  /** Owner share management the dialog addresses. */
+  readonly shares: OwnerShares
+  /** Session whose publish permission the permission step checks. */
+  readonly sessionId: SessionId
+  /** Address the mounted share host reported as saved; empty while none is saved. */
+  readonly defaultRelay: string
+  /** Localized copy. */
+  readonly t: PropsLocale<typeof NS>['t']
+}
+
+/** Relay address state the dialog's first step and its two checks present. */
+export interface ShareRelayAddress {
+  /** Address the owner is editing. */
+  readonly draft: string
+  /** Whether a save is in flight. */
+  readonly busy: boolean
+  /** Why the last save did not land, already localized. */
+  readonly error: string
+  /** What the last save put in force, already localized. */
+  readonly notice: string
+  /** Set when a save replaced an address that already held a verified identity. */
+  readonly reverify: boolean
+  /** Address the host itself named as in force, before the header action's earlier probe. */
+  readonly effectiveRelay: string | undefined
+  /** Whether the host's own read named the address in force. */
+  readonly named: boolean
+  /** Address this dialog presents as in force. */
+  readonly effective: string
+  /** What the connectivity step has established for that address. */
+  readonly connectivity: RelayConnectivity
+  /** The Host's own connectivity text, printed unchanged when it stated one. */
+  readonly connectivityError: string
+  /** What the permission step has established for that address. */
+  readonly permission: RelayPermission
+  /** The Host's own permission text, printed unchanged when it stated one. */
+  readonly permissionError: string
+  /** Whether either step's check is in flight. */
+  readonly testing: boolean
+  /** Whether the permission step is settled enough to create. */
+  readonly permissionPassed: boolean
+  /**
+   * Whether the field holds an address of the owner's own that is not the one in force.
+   *
+   * A typed address equal to the one in force is not a change, whatever its source; an empty field
+   * is not a change either, because it is the state before any host answer.
+   * @returns True only when saving is what puts the field's address in force.
+   */
+  readonly draftUnsaved: () => boolean
+  /** Record an edit to the address field, which the host's own answer must no longer replace. */
+  readonly editDraft: (value: string) => void
+  /** Clear or set the note that a saved address needs verifying again. */
+  readonly setReverify: (value: boolean) => void
+  /** Clear the permission result that belonged to a credential a sign-in replaced. */
+  readonly resetPermission: () => void
+  /**
+   * Ask whether the address in force answers at all.
+   *
+   * This step presents no credential: a server that refuses an anonymous request has still answered,
+   * so only a transport failure makes the address unreachable.
+   * @returns True when the address answered.
+   */
+  readonly testConnectivity: () => Promise<boolean>
+  /**
+   * Ask whether this host may publish a share at the address in force.
+   *
+   * The Host decides the severity: a refusal blocks creation until the owner verifies again, while a
+   * failure the Relay did not decide keeps the gateway's retry and only warns.
+   * @returns True when creation may proceed.
+   */
+  readonly testPermission: () => Promise<boolean>
+  /**
+   * Save the address the owner typed and read the host's answer back.
+   * @param relayUrl - Address to put in force.
+   * @param identity - Whether the owner was verified at the previous address, and how to re-read it.
+   */
+  readonly save: (relayUrl: string, identity: RelaySaveIdentity) => Promise<void>
+}
+
+/**
+ * Read, save, and check the Relay address the owner shares through.
+ * @param options - Owner share management, the Session, the address prefill, and localized copy.
+ * @returns The address in force, the owner's draft, and both checks.
+ */
+export function useShareRelayAddress(options: ShareRelayAddressOptions): ShareRelayAddress {
+  const { shares, sessionId, defaultRelay, t } = options
+  const [relayState, setRelayState] = useState<RelayState>()
+  const [relayDraft, setRelayDraft] = useState(defaultRelay)
+  /** Whether the owner has typed in the address field, so the host's own answer must not replace it. */
+  const relayEdited = useRef(false)
+  const [relayBusy, setRelayBusy] = useState(false)
+  const [relayError, setRelayError] = useState('')
+  const [relayNotice, setRelayNotice] = useState('')
+  /** Set when a save replaced an address that already held a verified identity, so the owner knows. */
+  const [relayReverify, setRelayReverify] = useState(false)
+  const [connectivity, setConnectivity] = useState<RelayConnectivity>('idle')
+  const [connectivityError, setConnectivityError] = useState('')
+  const [permission, setPermission] = useState<RelayPermission>('idle')
+  const [permissionError, setPermissionError] = useState('')
+  /** Address the connectivity step has already been started for, so one address is asked once. */
+  const checkedAddress = useRef<string>()
+
+  useEffect(() => {
+    let cancelled = false
+    const load = async (): Promise<void> => {
+      try {
+        const current = await shares.relay()
+        if (cancelled || !current.ok) return
+        setRelayState({
+          ...(current.value.override === undefined ? {} : { override: current.value.override }),
+          ...(current.value.effective === undefined ? {} : { effective: current.value.effective }),
+        })
+      } catch { /* Keep the host-provided default when the read fails. */ }
+    }
+    void load()
+    return () => { cancelled = true }
+  }, [shares])
+
+  // The owner host verifies and holds the credential; this read only states what it reported for the
+  // Relay address in force, so switching that address re-reads instead of reusing the old status.
+  const effectiveRelay = relayState?.effective
+  /**
+   * Whether the host's own read named the address in force.
+   *
+   * The prop only prefills the field from the header action's earlier probe: an address this dialog
+   * has not heard its own host name is not one it may sign in at or claim as in force.
+   */
+  const relayNamed = effectiveRelay !== undefined && effectiveRelay !== ''
+  /** The address this dialog presents as in force, before the Host's own read lands. */
+  const effective = effectiveRelay ?? defaultRelay
+  // The host names the address in force after this dialog is already open — the read above, or the
+  // header action's earlier probe — so an untouched field follows it. An empty field is the state before
+  // any answer, not an address the owner typed, and it must not read as a change still to be saved.
+  useEffect(() => {
+    if (relayEdited.current || effective === '') return
+    setRelayDraft(current => current === effective ? current : effective)
+  }, [effective])
+
+  /**
+   * Ask whether the address in force answers at all.
+   * @returns True when the address answered.
+   */
+  const testConnectivity = async (): Promise<boolean> => {
+    // Nothing is in force to ask about until the host names an address, and a failure this page never
+    // probed for is not a fact about the Relay: the step stays with the address until one is named.
+    if (effective === '') {
+      setConnectivity('idle')
+      setConnectivityError('')
+      return false
+    }
+    setConnectivity('testing')
+    setConnectivityError('')
+    try {
+      const probe = await shares.testRelay()
+      if (!probe.ok) {
+        setConnectivity('unreachable')
+        setConnectivityError(t('dialog.hostUnavailable'))
+        return false
+      }
+      const detail = probe.value.error ?? ''
+      if (probe.value.ok || probe.value.httpReachable) {
+        setConnectivity('ok')
+        return true
+      }
+      setConnectivity('unreachable')
+      setConnectivityError(detail === '' ? t('dialog.testFail') : detail)
+      return false
+    } catch {
+      setConnectivity('unreachable')
+      setConnectivityError(t('dialog.hostUnavailable'))
+      return false
+    }
+  }
+
+  /**
+   * Ask whether this host may publish a share at the address in force.
+   * @returns True when creation may proceed.
+   */
+  const testPermission = async (): Promise<boolean> => {
+    setPermission('checking')
+    setPermissionError('')
+    try {
+      const probe = await shares.testPublish({ sessionId })
+      if (!probe.ok) {
+        // This page could not reach its own Host, which decided nothing about the Relay, so the failure
+        // stays transient rather than being reported as a refusal.
+        setPermission('warn')
+        setPermissionError(t('dialog.hostUnavailable'))
+        return true
+      }
+      const detail = probe.value.error ?? ''
+      if (probe.value.ok) {
+        setPermission('ok')
+        return true
+      }
+      if (probe.value.blocking) {
+        setPermission('blocked')
+        setPermissionError(detail === '' ? t('dialog.permissionFailed') : detail)
+        return false
+      }
+      setPermission('warn')
+      setPermissionError(detail === '' ? t('dialog.testWarn') : detail)
+      return true
+    } catch {
+      // This page could not reach its own Host, which decided nothing about the Relay, so the failure
+      // stays transient rather than being reported as a refusal.
+      setPermission('warn')
+      setPermissionError(t('dialog.hostUnavailable'))
+      return true
+    }
+  }
+
+  /**
+   * Save the address the owner typed and read the host's answer back.
+   * @param relayUrl - Address to put in force.
+   * @param identity - Whether the owner was verified at the previous address, and how to re-read it.
+   */
+  const save = async (relayUrl: string, identity: RelaySaveIdentity): Promise<void> => {
+    /* v8 ignore next -- the address field and its Save control are disabled while a save is in flight. */
+    if (relayBusy) return
+    const value = relayUrl.trim()
+    if (!/^https?:\/\/\S+$/u.test(value)) {
+      setRelayError(t('dialog.relayInvalid'))
+      return
+    }
+    const previous = effective
+    setRelayBusy(true)
+    setRelayError('')
+    setRelayNotice('')
+    try {
+      const saved = await shares.setRelay({ relayUrl: value })
+      if (!saved.ok) {
+        setRelayError(saved.error.code === 'liveshareShares/invalid-relay-url'
+          ? t('dialog.relayInvalid')
+          : t('dialog.hostUnavailable'))
+        return
+      }
+      // The saved value is the address in force; a Host that answers without one still leaves the
+      // address the owner saved as the draft, because that is what it just accepted.
+      const savedAddress = saved.value.effective ?? value
+      setRelayState({
+        ...(saved.value.override === undefined ? {} : { override: saved.value.override }),
+        effective: savedAddress,
+      })
+      setRelayDraft(savedAddress)
+      relayEdited.current = false
+      setRelayNotice(t('dialog.relaySaved'))
+      // Every result on hand describes the address that was in force; the saved one starts its own
+      // connectivity and permission checks instead of inheriting another address's answer.
+      checkedAddress.current = savedAddress
+      setConnectivity('idle')
+      setConnectivityError('')
+      setPermission('idle')
+      setPermissionError('')
+      // A credential is bound to the address that issued it, so saving a different address means the
+      // owner verifies again there; saying so before the read lands keeps the step honest.
+      setRelayReverify(savedAddress !== previous && identity.verified)
+      // The identity read is keyed on the address in force, and asking again here makes the new
+      // address's status land with the save instead of after the next unrelated focus.
+      identity.refresh()
+      await testConnectivity()
+    } catch {
+      setRelayError(t('dialog.hostUnavailable'))
+    } finally {
+      setRelayBusy(false)
+    }
+  }
+
+  /** Whether the field holds an address of the owner's own that is not the one in force. */
+  const draftUnsaved = (): boolean => relayDraft.trim() !== '' && relayDraft.trim() !== effective
+
+  // Connectivity is the step right after the address, so the address in force is asked once as soon as
+  // the host names it. An address the owner typed but has not saved is not asked about: this host would
+  // probe its own, not the draft. The host naming an address equal to the field's prefill changes no
+  // value here, so the naming itself is a dependency.
+  useEffect(() => {
+    if (!relayNamed || draftUnsaved() || checkedAddress.current === effective) return
+    checkedAddress.current = effective
+    void testConnectivity()
+  }, [effective, relayDraft, relayNamed])
+
+  /** Record an edit to the address field, which the host's own answer must no longer replace. */
+  const editDraft = (value: string): void => {
+    relayEdited.current = true
+    setRelayDraft(value)
+    setRelayError('')
+    setRelayNotice('')
+    setRelayReverify(false)
+  }
+
+  /** Clear the permission result that belonged to a credential a sign-in replaced. */
+  const resetPermission = (): void => {
+    setPermission('idle')
+    setPermissionError('')
+  }
+
+  return {
+    draft: relayDraft,
+    busy: relayBusy,
+    error: relayError,
+    notice: relayNotice,
+    reverify: relayReverify,
+    effectiveRelay,
+    named: relayNamed,
+    effective,
+    connectivity,
+    connectivityError,
+    permission,
+    permissionError,
+    testing: connectivity === 'testing' || permission === 'checking',
+    permissionPassed: permission === 'ok' || permission === 'warn',
+    draftUnsaved,
+    editDraft,
+    setReverify: setRelayReverify,
+    resetPermission,
+    testConnectivity,
+    testPermission,
+    save,
+  }
+}
diff --git a/packages/experimental/liveshare/src/client/share-types.ts b/packages/experimental/liveshare/src/client/share-types.ts
new file mode 100644
index 0000000000..c4fd7e016b
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/share-types.ts
@@ -0,0 +1,129 @@
+/** Shared owner-facing share records read from the owner share-management Remote. */
+
+import type { ViewerSessionMode } from './viewer-capabilities.ts'
+
+/**
+ * One plugin's endpoints the owner may expose to a share's viewers.
+ *
+ * The same shape carries the plugins' live offers and one share's own selection: the panel presents
+ * the offers as tick boxes and saves back the selected subset, so both sides read the same fields.
+ */
+export interface ViewerCapabilityGroup {
+  /** Declaring plugin's name, which is what the owner ticks under. */
+  readonly plugin: string
+  /** Readable endpoints of that plugin, sorted by the host. */
+  readonly readable: readonly string[]
+  /** Writable endpoints of that plugin, sorted by the host. */
+  readonly writable: readonly string[]
+}
+
+/** One owner-created share listed by the global management UI. */
+export interface OutgoingShare {
+  readonly shareId: string
+  readonly sessionId: string
+  readonly sessionTitle: string
+  readonly link: string
+  readonly createdAt: string
+  /**
+   * The session permission the owner set for this share. Absent when the owner's Harness does not
+   * report a mode at all, which is stated as unsupported rather than as the narrowest one.
+   */
+  readonly sessionMode?: ViewerSessionMode
+  /**
+   * Whether this share lets an admitted viewer fork it.
+   *
+   * Independent of the tier: absent on a Host that does not report it, which reads as off.
+   */
+  readonly allowsFork?: boolean
+  /**
+   * Plugin endpoints this share exposes to its viewers, as the owner's Harness reports them.
+   *
+   * Absent when that Harness reports none, which is also what an empty list means: no plugin endpoint
+   * reaches this share's viewers. A host that cannot report the field is read the same way, because
+   * nothing was selected for the share.
+   */
+  readonly viewerCapabilities?: readonly ViewerCapabilityGroup[]
+  /** ISO time after which the Relay denies viewers; absent means it never expires. */
+  readonly expiresAt?: string
+  readonly online: boolean
+  readonly access?: unknown
+}
+
+/** One durable audit entry shown in the owner share history. */
+export interface ShareAuditEntry {
+  readonly id: string
+  readonly action: string
+  readonly createdAt: string
+  readonly actor?: string
+}
+
+/** Browser-safe summary of the persisted ACL scope for one share. */
+export interface ConfirmedShareAccess {
+  readonly mode: 'open' | 'selected'
+  readonly selectedCount: number
+  readonly deploymentCount: number
+}
+
+/**
+ * Normalize one share access payload into a browser-safe summary.
+ * @param value Raw `access` field from the owner share list.
+ * @returns Confirmed mode and counts, or undefined for legacy or malformed records.
+ */
+export function readAccess(value: unknown): ConfirmedShareAccess | undefined {
+  if (typeof value !== 'object' || value === null) return undefined
+  const access = value as Record<string, unknown>
+  if ((access.mode !== 'open' && access.mode !== 'selected')
+    || !Array.isArray(access.selected) || !Array.isArray(access.deploymentAllowedSubjectIds)) return undefined
+  return {
+    mode: access.mode,
+    selectedCount: access.selected.length,
+    deploymentCount: access.deploymentAllowedSubjectIds.length,
+  }
+}
+
+/**
+ * Read one endpoint list out of a decoded entry.
+ * @param value Raw `readable` or `writable` field.
+ * @returns The endpoint names, or undefined when the value is not an array of strings.
+ */
+function readEndpointList(value: unknown): readonly string[] | undefined {
+  if (!Array.isArray(value)) return undefined
+  const endpoints: string[] = []
+  for (const endpoint of value) {
+    if (typeof endpoint !== 'string') return undefined
+    endpoints.push(endpoint)
+  }
+  return endpoints
+}
+
+/**
+ * Read one plugin's endpoint lists out of a decoded offer or selection entry.
+ * @param value Raw entry from the host's `capabilities` or `viewerCapabilities` array.
+ * @returns The group, or undefined when the entry is not a plugin name with two endpoint lists.
+ */
+function readCapabilityGroup(value: unknown): ViewerCapabilityGroup | undefined {
+  if (typeof value !== 'object' || value === null) return undefined
+  const group = value as Record<string, unknown>
+  if (typeof group.plugin !== 'string' || group.plugin === '') return undefined
+  const readable = readEndpointList(group.readable)
+  const writable = readEndpointList(group.writable)
+  return readable === undefined || writable === undefined
+    ? undefined
+    : { plugin: group.plugin, readable, writable }
+}
+
+/**
+ * Normalize one host-reported endpoint list into the entries this page can present.
+ *
+ * A Host that reports nothing, reports a value this build cannot read, or reports one malformed entry
+ * leaves this page with no offer to present for it: an unreadable offer is not one the owner may tick.
+ * @param value Raw `capabilities` or `viewerCapabilities` field.
+ * @returns The readable groups, in the order the host reported them.
+ */
+export function readCapabilityGroups(value: unknown): readonly ViewerCapabilityGroup[] {
+  if (!Array.isArray(value)) return []
+  return value.flatMap((entry): readonly ViewerCapabilityGroup[] => {
+    const group = readCapabilityGroup(entry)
+    return group === undefined ? [] : [group]
+  })
+}
diff --git a/packages/experimental/liveshare/src/client/user-origin.module.css b/packages/experimental/liveshare/src/client/user-origin.module.css
new file mode 100644
index 0000000000..0af439a76e
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/user-origin.module.css
@@ -0,0 +1,13 @@
+/* Shared-session attribution above a user bubble: one quiet line that ellipsizes a long subject
+   instead of widening the bubble's row. Chat's user row right-aligns and stacks its children. */
+
+.origin {
+  align-self: flex-end;
+  max-width: 100%;
+  overflow: hidden;
+  color: var(--dsw-alias-label-tertiary);
+  font-size: var(--dsh-content-font-size-secondary, 13px);
+  line-height: calc(18px + var(--dsh-content-font-delta-secondary, 0px));
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
diff --git a/packages/experimental/liveshare/src/client/user-origin.tsx b/packages/experimental/liveshare/src/client/user-origin.tsx
new file mode 100644
index 0000000000..0b3aa6f7e9
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/user-origin.tsx
@@ -0,0 +1,93 @@
+/**
+ * The attribution line above a user message a shared-session reader sent.
+ *
+ * The durable `user/message` source records the share-viewer principal for a
+ * caller other than the owner. Chat's `conversation.chat.user.before` chain seat
+ * elects that source above the official user bubble; this entry supplies only
+ * the label and leaves the bubble, actions, and text interaction to Chat. The
+ * seat is dispatched for `user` rows alone, so steering keeps its untouched
+ * official DOM. Chat's seat owner props carry the durable source unparsed; this
+ * module is the only place that recognizes the share-viewer principal and owns
+ * the copy.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/user-origin
+ */
+
+import type { ReactNode } from 'react'
+import type { MatchedShare, PropsLocale, PropsRuntime, SlotMap } from '@deepseek-ai/dsh-client-ui-slots'
+// Type-only: merges Chat's SlotMap and standard declarations into this program.
+import type {} from '@deepseek-ai/dsh-client-ui-chat/client'
+import type { NS } from './locales.ts'
+import { useOwnerDisplay } from './owner-display.ts'
+import css from './user-origin.module.css'
+
+/** The parts of a durable share-viewer principal this line reads. */
+interface ShareViewerPrincipal {
+  readonly kind?: unknown
+  readonly shareId?: unknown
+  readonly actor?: unknown
+}
+
+/** The durable author a shared message names: its subject and, when recorded, display name. */
+export interface ShareViewerAuthor {
+  readonly subjectId: string
+  readonly displayName?: string
+}
+
+/**
+ * The Relay-asserted author behind a durable message source.
+ *
+ * Session data is persisted, so every field the attribution relies on is
+ * checked; an owner, legacy, or malformed source names no author.
+ * @param source - Recorded `user/message` source.
+ * @returns The share-viewer author, or undefined for every other author.
+ */
+export function shareViewerAuthor(source: unknown): ShareViewerAuthor | undefined {
+  if (typeof source !== 'object' || source === null) return undefined
+  const input = source as { kind?: unknown; principal?: unknown }
+  if (input.kind !== 'user') return undefined
+  if (typeof input.principal !== 'object' || input.principal === null) return undefined
+  const principal = input.principal as ShareViewerPrincipal
+  if (principal.kind !== 'share-viewer') return undefined
+  if (typeof principal.shareId !== 'string' || principal.shareId.trim() === '') return undefined
+  if (typeof principal.actor !== 'object' || principal.actor === null) return undefined
+  const actor = principal.actor as { subjectId?: unknown; displayName?: unknown }
+  const subjectId = actor.subjectId
+  if (typeof subjectId !== 'string' || subjectId.trim() === '') return undefined
+  const displayName = actor.displayName
+  return {
+    subjectId,
+    ...(typeof displayName === 'string' && displayName.trim() !== '' ? { displayName } : {}),
+  }
+}
+
+/**
+ * The Relay-asserted subject behind a durable message source.
+ * @param source - Recorded `user/message` source.
+ * @returns The share-viewer subject, or undefined for every other author.
+ */
+export function shareViewerSubject(source: unknown): string | undefined {
+  return shareViewerAuthor(source)?.subjectId
+}
+
+/** Props of the shared-session origin entry above a user message. */
+export type SharedSessionOriginProps =
+  PropsRuntime<'conversation.chat.user.before'>
+  & PropsLocale<typeof NS>
+  & MatchedShare<SlotMap['conversation.chat.user.before'], ShareViewerAuthor>
+
+/**
+ * Render the reader attribution elected for a durable share-viewer message.
+ * @param props - Chat's elected chain match and this package's translator.
+ * @returns The subject line.
+ */
+export function SharedSessionOrigin({ matched: author, t }: SharedSessionOriginProps): ReactNode {
+  const owner = useOwnerDisplay()
+  // A recorded display name travels with the message; older sources fall back to the current
+  // reader's name for its own subject, and then to the durable id.
+  const shown = author.displayName
+    ?? (owner.subjectId === author.subjectId ? owner.displayName : undefined)
+    ?? author.subjectId
+  const label = t('inputOrigin.sharedSession', { subjectId: shown })
+  return <span className={css.origin} data-liveshare-origin={author.subjectId} title={label}>{label}</span>
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-brand.module.css b/packages/experimental/liveshare/src/client/viewer-brand.module.css
new file mode 100644
index 0000000000..451de863dd
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-brand.module.css
@@ -0,0 +1,61 @@
+/* The viewer's brand content: LiveShare, its owner, and the owner's DSH version inside the
+   sidebar's own brand row. Everything is 24px tall and ellipsized so a narrow or long-named
+   share never widens the row or covers the Session header. */
+
+.brand {
+  display: inline-flex;
+  flex-direction: column;
+  justify-content: center;
+  gap: 0;
+  min-width: 0;
+  max-width: 100%;
+  height: 24px;
+  color: var(--dsw-alias-label-primary);
+  text-decoration: none;
+}
+
+@media (hover: hover) {
+  .brand:hover .wordmark {
+    text-decoration: underline;
+  }
+}
+
+.top {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  min-width: 0;
+  max-width: 100%;
+}
+
+.wordmark {
+  flex: none;
+  font-size: 12px;
+  font-weight: 600;
+  line-height: 12px;
+  letter-spacing: 0.01em;
+}
+
+.owner {
+  max-width: 100%;
+  overflow: hidden;
+  color: var(--dsw-alias-label-secondary);
+  font-size: 10px;
+  font-weight: 400;
+  line-height: 12px;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.version {
+  flex: none;
+  padding: 0 4px;
+  border-radius: 3px;
+  color: var(--dsw-alias-label-primary-inverted);
+  background: var(--dsw-alias-label-primary);
+  font-family: var(--ds-font-family-code);
+  font-size: 9px;
+  font-weight: 500;
+  line-height: 12px;
+  white-space: nowrap;
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-brand.tsx b/packages/experimental/liveshare/src/client/viewer-brand.tsx
new file mode 100644
index 0000000000..80de4c104e
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-brand.tsx
@@ -0,0 +1,118 @@
+/**
+ * The viewer page's brand row: the sidebar's own mark and name seats carry the share.
+ *
+ * The page renders the normal client UI, so its identity belongs where every DSH page keeps one —
+ * the expanded sidebar's brand row — instead of a floating banner. The mark stays the shipped
+ * Harness logo; the name seat becomes the way home and states, compactly, who shared this Session
+ * and which DSH built it. The Relay's own release stays a detail on that link rather than a second
+ * identifier in the page's chrome.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-brand
+ */
+
+import { useSyncExternalStore, type ReactNode } from 'react'
+import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import { FishLogo } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { SidebarBrandMarkOwnerProps } from '@deepseek-ai/dsh-client-ui-sidebar/client'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import { NS } from './locales.ts'
+import { identitySubjectLabel } from '../owner-identity.ts'
+import { viewerContextFacts } from './viewer-context.ts'
+import css from './viewer-brand.module.css'
+
+export const name = 'liveshare-viewer-brand'
+
+/**
+ * Registration rank for the viewer's brand seats.
+ *
+ * `sidebar.brand.mark` and `sidebar.brand.name` are single slots, and a served viewer page mounts the
+ * owner's own plugins, so the shipped brand (including `ui-brand-official`, which registers both at
+ * the default rank on official builds) is already registered at rank 0. A second registration at that
+ * rank fails, so the viewer entry registers below it and shadows the shipped one.
+ */
+export const VIEWER_BRAND_PRIORITY = -10
+
+/** The slot registry is the only service this plugin reads. */
+export const inject: readonly string[] = ['slots']
+
+/** Window global the shell installs for the share this page presents. */
+interface ViewerTargetWindow {
+  __DSH_LIVESHARE_VIEWER__?: {
+    readonly shareId: string
+    readonly sessionId: string
+    readonly basePath: string
+  }
+}
+
+/** The page's own read publishes the facts; the seat states whichever have arrived. */
+function useViewerContextFacts(): ReturnType<typeof viewerContextFacts.getSnapshot> {
+  return useSyncExternalStore(
+    listener => viewerContextFacts.subscribe(listener),
+    () => viewerContextFacts.getSnapshot(),
+  )
+}
+
+/**
+ * Render the mark slot: the shipped Harness logo at the shell's requested size.
+ * @param props - Host-supplied mark presentation.
+ * @returns the Harness mark.
+ */
+export function ViewerBrandMark({ size }: SidebarBrandMarkOwnerProps): ReactNode {
+  return <FishLogo size={size} />
+}
+
+/**
+ * Render the name slot: LiveShare, its owner, and the owner's DSH version, linked to the page's
+ * share directory. The Relay's release rides the same link's tooltip so a long identifier stays
+ * readable on demand instead of widening the row.
+ * @param props - The framework-injected translate seat for this package's copy.
+ * @returns the viewer's brand content.
+ */
+export function ViewerBrandName({ t }: PropsLocale<typeof NS>): ReactNode {
+  const target = (globalThis as ViewerTargetWindow).__DSH_LIVESHARE_VIEWER__
+  const basePath = target?.basePath ?? ''
+  const facts = useViewerContextFacts()
+  // The share's own identity data names its owner: a verified subject without a display name is
+  // labelled from the subject itself, and an unstated identity stays unstated.
+  const owner = facts.owner
+    ?? (facts.ownerSubjectId === undefined
+      ? t('viewer.picker.ownerUnknown')
+      : t('viewer.picker.subjectLabel', { label: identitySubjectLabel(facts.ownerSubjectId) }))
+  const ownerLine = t('viewer.sharedByShort', { owner })
+  const version = facts.dshVersion === undefined
+    ? undefined
+    // Inline, the chip states the release the owner runs. Build metadata and the Relay's own
+    // release stay on the link's tooltip, so a long identifier never widens the row.
+    : `${t('viewer.picker.version')} ${facts.dshVersion.replace(/\+.*$/u, '')}`
+  const relay = facts.relay === undefined ? undefined : t('viewer.relayVersion', { release: facts.relay })
+  return (
+    <a
+      className={css.brand}
+      href={`${basePath}/`}
+      aria-label={t('viewer.home')}
+      title={[
+        ownerLine,
+        facts.dshVersion === undefined ? undefined : `${t('viewer.picker.version')} ${facts.dshVersion}`,
+        relay,
+      ].filter(value => value !== undefined).join(' · ')}
+    >
+      <span className={css.top}>
+        <span className={css.wordmark}>{t('viewer.brand')}</span>
+        {version === undefined ? null : <span className={css.version}>{version}</span>}
+      </span>
+      <span className={css.owner}>{ownerLine}</span>
+    </a>
+  )
+}
+
+/**
+ * Fill the sidebar's brand seats with the viewer's own identity.
+ * @param ctx - browser context of the viewer's module table.
+ */
+export function apply(ctx: ClientContext): void {
+  ctx.slots.inject('sidebar.brand.mark', () =>
+    ctx.slots.inject('sidebar.brand.name', function* () {
+      yield ctx.slots.register({ name: 'sidebar.brand.mark', priority: VIEWER_BRAND_PRIORITY }, ViewerBrandMark)
+      yield ctx.slots.register({ name: 'sidebar.brand.name', priority: VIEWER_BRAND_PRIORITY, locale: NS }, ViewerBrandName)
+    }))
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-capabilities.ts b/packages/experimental/liveshare/src/client/viewer-capabilities.ts
new file mode 100644
index 0000000000..41b297d7d0
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-capabilities.ts
@@ -0,0 +1,150 @@
+/**
+ * The one mode one share's owner explicitly grants this viewer page.
+ *
+ * Admission (anyone in the organization with the link, or an approved request) never implies a mode:
+ * the page starts at `view`, an older share that never granted anything stays there, and an answer
+ * the page cannot read — or one naming a mode this build does not know — leaves it there rather than
+ * assuming more.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-capabilities
+ */
+
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+
+/**
+ * What one owner lets a viewer do with a share, as one of two tiers.
+ *
+ * The same two tiers the owner's own permission presets name. `view` reads the shared Session and
+ * drives its loop inside the granted workspace without writing it; `write` also modifies the files
+ * inside that workspace. Neither reconfigures the Session, and forking is a separate switch the
+ * share reports on its own.
+ */
+export type ViewerSessionMode = 'view' | 'write'
+
+/** Owner-granted abilities this page holds for the share it presents. */
+export interface ViewerCapabilities {
+  /** Mode the share is in; `view` until an answer says otherwise. */
+  readonly mode: ViewerSessionMode
+  /** Stable code behind that answer, when the host named one. */
+  readonly reason?: string
+  /**
+   * Whether the page's last read of the share answered nothing it could read.
+   *
+   * The mode still holds the narrowest value, because nothing was granted, but the page has not
+   * confirmed what the share is: a surface that states a reason says so instead of stating the
+   * read-only fact as though the share had answered.
+   */
+  readonly unconfirmed?: true
+}
+
+/** The one capability set the page holds; the mode starts at the narrowest one. */
+export const viewerCapabilities = createSnapshotStore<ViewerCapabilities>({ mode: 'view' })
+
+/**
+ * Return the capability store to the state a page that read nothing holds.
+ *
+ * The viewer session plugin owns the store's lifetime and calls this when its page starts and ends, so
+ * a remount or HMR replacement cannot inherit the tier another page's share granted.
+ */
+export function resetViewerCapabilities(): void {
+  viewerCapabilities.set({ mode: 'view' })
+}
+
+/**
+ * Refusal codes that settle the page itself: the share is gone, expired, or this reader lost it.
+ *
+ * Nothing this page does can change that verdict, so every Session it holds states the reason instead
+ * of the read-only fact it states while the share is merely read-only.
+ */
+export const PAGE_WIDE_REFUSALS: ReadonlySet<string> = new Set([
+  'share-stopped',
+  'share-expired',
+  'viewer-not-authorized',
+])
+
+/** Every tier an owner may set, narrowest first. An answer naming anything else stays `view`. */
+export const SESSION_MODES: readonly ViewerSessionMode[] = ['view', 'write']
+
+/** Tiers this build knows. */
+const KNOWN_MODES: ReadonlySet<string> = new Set(SESSION_MODES)
+
+/**
+ * Read one tier a Host reported.
+ *
+ * The withdrawn `fork-readonly` tier reads as `view`: it granted forking, which the share's own fork
+ * switch carries now, so a link created under it keeps its width without naming a tier this build no
+ * longer offers.
+ * @param value - Value a Host reported, of any type.
+ * @returns The tier, or undefined when this build does not know it.
+ */
+export function readSessionMode(value: unknown): ViewerSessionMode | undefined {
+  if (value === 'fork-readonly') return 'view'
+  return typeof value === 'string' && KNOWN_MODES.has(value)
+    ? value as ViewerSessionMode
+    : undefined
+}
+
+/**
+ * Read one non-empty string field from a decoded JSON object.
+ * @param source - Decoded object, absent when its endpoint could not be read.
+ * @param key - Field to read.
+ * @returns The value, or undefined when the field is absent, empty, or not a string.
+ */
+function readText(source: Record<string, unknown> | undefined, key: string): string | undefined {
+  const value = source?.[key]
+  return typeof value === 'string' && value !== '' ? value : undefined
+}
+
+/**
+ * Read the mode out of one decoded capabilities object.
+ *
+ * An absent mode is an older Host whose only statement about reach is the branching grant it still
+ * reports; that grant is forking, which is no tier of its own, so the page holds `view`. A mode this
+ * build does not know is the other direction: the answer names a mode this build is too old to
+ * understand, so it holds `view` rather than guessing from a field that Host may no longer honour.
+ * Neither direction reaches `write`.
+ * @param capabilities - The answer's `capabilities` object, when it carried one.
+ * @returns The tier and the code behind it, or the closed default.
+ */
+function readMode(capabilities: Record<string, unknown> | undefined): ViewerCapabilities {
+  const fork = capabilities?.['fork']
+  const forkRecord = typeof fork === 'object' && fork !== null ? fork as Record<string, unknown> : undefined
+  // The code travels with whichever field carried it: this build's own, or the older branching grant
+  // the same answer still reports while a Host migrates.
+  const reason = readText(capabilities, 'sessionModeReason')
+    ?? readText(forkRecord, 'reason')
+  const reported = capabilities?.['sessionMode']
+  const named = readSessionMode(reported)
+  if (named !== undefined) {
+    return { mode: named, ...(reason === undefined ? {} : { reason }) }
+  }
+  // A field this build cannot read is a Host newer than this build: the page holds the narrowest mode
+  // rather than guessing from a legacy grant that Host may no longer honour.
+  if (reported !== undefined) return { mode: 'view', ...(reason === undefined ? {} : { reason }) }
+  // No mode field at all is an older Host, and a branching grant is a fork switch rather than a tier;
+  // nothing that Host said about reach becomes write.
+  return { mode: 'view', ...(reason === undefined ? {} : { reason }) }
+}
+
+/**
+ * Read what one `/__liveshare/context` answer grants this page.
+ * @param context - Decoded context body, or undefined when unreadable.
+ * @returns The mode this page holds after that answer.
+ */
+export function readViewerCapabilities(context: unknown): ViewerCapabilities {
+  // An unreadable answer — a refusal, a body this build cannot parse, or no answer in time — leaves
+  // the page unable to confirm anything about the share, which it says rather than assuming the
+  // read-only fact an answer that arrived would have stated.
+  if (typeof context !== 'object' || context === null) return { mode: 'view', unconfirmed: true }
+  const capabilities = (context as Record<string, unknown>)['capabilities']
+  if (typeof capabilities !== 'object' || capabilities === null) return { mode: 'view', unconfirmed: true }
+  return readMode(capabilities as Record<string, unknown>)
+}
+
+/**
+ * Publish what one context answer grants this page.
+ * @param context - Decoded context body, or undefined when unreadable.
+ */
+export function publishViewerCapabilities(context: unknown): void {
+  viewerCapabilities.set(readViewerCapabilities(context))
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-context.ts b/packages/experimental/liveshare/src/client/viewer-context.ts
new file mode 100644
index 0000000000..f6569e6590
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-context.ts
@@ -0,0 +1,167 @@
+/**
+ * The viewer page's own read of the share it presents.
+ *
+ * One answer carries both halves of the page's identity: which DSH the owner runs and who shared this
+ * Session, and what the owner lets this reader do beyond reading. The page owns that read rather than
+ * a component, because every surface re-reads what the share says while it renders.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-context
+ */
+
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { publishViewerCapabilities } from './viewer-capabilities.ts'
+import { noteViewerStatusFacts } from './viewer-status.ts'
+import { VIEWER_READ_TIMEOUT_MS } from '../read-budgets.ts'
+import { forgetOwnerDisplay, rememberOwnerDisplay } from './owner-display.ts'
+
+/** Owner and build facts the Relay reports for the share this page presents. */
+export interface ViewerContextFacts {
+  readonly owner?: string
+  /** Verified subject of the share's owner; the label of last resort when no name was reported. */
+  readonly ownerSubjectId?: string
+  /** Display name the Relay reported for the reader viewing this page. */
+  readonly viewerDisplayName?: string
+  /** Subject the Relay reported for the reader viewing this page. */
+  readonly viewerSubjectId?: string
+  readonly dshVersion?: string
+  readonly relay?: string
+}
+
+/** The facts known so far; absent fields stay unstated. */
+export const viewerContextFacts = createSnapshotStore<ViewerContextFacts>({})
+
+/**
+ * Which read of this share is the current one.
+ *
+ * A page asks about one share, and every later ask answers for later facts: an answer that arrives
+ * after a newer read started states what the share said when it was asked, which is no longer what
+ * the page holds. Only the newest read may publish.
+ */
+let readGeneration = 0
+
+/**
+ * Forget the previous page's read and facts for the page that takes over.
+ *
+ * The store and the counter are module-level so every surface reads one page's answer without a
+ * service; the viewer session plugin owns their lifetime and calls this when its page starts and ends,
+ * so a remount or HMR replacement never inherits another page's share. Advancing the generation also
+ * retires any read the previous page left in flight, so its late answer cannot publish here.
+ */
+export function resetViewerContext(): void {
+  readGeneration += 1
+  viewerContextFacts.set({})
+  forgetOwnerDisplay()
+}
+
+/** One endpoint's settled answer; only its current consumer may publish status facts. */
+type JsonAnswer =
+  | { readonly kind: 'readable'; readonly body: Record<string, unknown> }
+  | { readonly kind: 'refused'; readonly status: number }
+  | { readonly kind: 'unreadable' }
+
+/**
+ * Read JSON without publishing page state.
+ * @param url - Same-origin document-relative address.
+ * @param signal - Page lifetime cancellation, absent for a standalone read.
+ * @returns A decoded object, HTTP refusal, or unreadable outcome within the page's deadline.
+ */
+async function readJson(url: string, signal?: AbortSignal): Promise<JsonAnswer> {
+  try {
+    const deadline = AbortSignal.timeout(VIEWER_READ_TIMEOUT_MS)
+    const response = await fetch(url, {
+      credentials: 'same-origin',
+      headers: { accept: 'application/json' },
+      signal: signal === undefined ? deadline : AbortSignal.any([signal, deadline]),
+    })
+    if (!response.ok) return { kind: 'refused', status: response.status }
+    const body: unknown = await response.json()
+    return typeof body === 'object' && body !== null && !Array.isArray(body)
+      ? { kind: 'readable', body: body as Record<string, unknown> }
+      : { kind: 'unreadable' }
+  } catch (_unreadableEndpoint) {
+    // Failed JSON or transport reads establish no share or admission authority.
+    return { kind: 'unreadable' }
+  }
+}
+
+/**
+ * Read one non-empty string field from a decoded JSON object.
+ * @param source - Decoded object, absent when its endpoint could not be read.
+ * @param key - Field to read.
+ * @returns The value, or undefined when the field is absent, empty, or not a string.
+ */
+function readText(source: Record<string, unknown> | undefined, key: string): string | undefined {
+  const value = source?.[key]
+  return typeof value === 'string' && value !== '' ? value : undefined
+}
+
+/**
+ * Record facts one answer states, keeping the fields it does not mention.
+ * @param facts - Facts this answer carries.
+ */
+function noteFacts(facts: ViewerContextFacts): void {
+  viewerContextFacts.set({ ...viewerContextFacts.getSnapshot(), ...facts })
+}
+
+/**
+ * Read the share and optional build facts under one generation.
+ *
+ * Only the newest uncancelled read may publish. A usable context confirms the share's own answer and
+ * clears prior notes about it; context failures close abilities and keep the page unconfirmed. Build
+ * failures affect neither the share state nor the context.
+ * @param basePath - Public Relay base path the served document carries.
+ * @param shareId - Share this page presents.
+ * @param signal - Page lifetime cancellation; absent reads expire only under their deadline.
+ * @returns Completion after both reads settle; superseded or cancelled answers publish nothing.
+ */
+export async function readViewerContext(basePath: string, shareId: string, signal?: AbortSignal): Promise<void> {
+  const generation = ++readGeneration
+  const current = (): boolean => generation === readGeneration && signal?.aborted !== true
+  const share = readJson(`${basePath}/__liveshare/context?shareId=${encodeURIComponent(shareId)}`, signal)
+    .then((result) => {
+      if (!current()) return
+      const answer = result.kind === 'readable' ? result.body : undefined
+      const rawCapabilities = answer?.['capabilities']
+      const capabilities = typeof rawCapabilities === 'object' && rawCapabilities !== null && !Array.isArray(rawCapabilities)
+        ? rawCapabilities as Record<string, unknown> : undefined
+      const readable = capabilities !== undefined
+      publishViewerCapabilities(readable ? answer : undefined)
+      noteViewerStatusFacts({
+        ...(typeof capabilities?.['online'] === 'boolean' ? { ownerOnline: capabilities['online'] } : {}),
+        unconfirmed: !readable,
+        ...(readable ? {
+          reason: readText(capabilities, 'sessionModeReason'),
+          feedFailed: false,
+          unauthenticated: false,
+          notFound: false,
+          unreachable: false,
+        } : {}),
+        ...(result.kind === 'refused' && result.status === 404 ? { notFound: true } : {}),
+        ...(result.kind === 'refused' && result.status === 401 ? { unauthenticated: true } : {}),
+        ...(result.kind === 'unreadable' ? { unreachable: true } : {}),
+      })
+      const owner = readText(answer, 'ownerDisplayName') ?? readText(capabilities, 'ownerDisplayName')
+      const ownerSubjectId = readText(answer, 'ownerSubjectId')
+      const dshVersion = readText(answer, 'dshVersion')
+      const rawViewer = typeof answer?.['viewer'] === 'object' && answer['viewer'] !== null
+        && !Array.isArray(answer['viewer']) ? answer['viewer'] as Record<string, unknown> : undefined
+      const viewerSubjectId = readText(rawViewer, 'subjectId')
+      const viewerDisplayName = readText(rawViewer, 'displayName')
+      noteFacts({
+        ...(owner === undefined ? {} : { owner }),
+        ...(ownerSubjectId === undefined ? {} : { ownerSubjectId }),
+        ...(dshVersion === undefined ? {} : { dshVersion }),
+        ...(viewerSubjectId === undefined ? {} : { viewerSubjectId }),
+        ...(viewerDisplayName === undefined ? {} : { viewerDisplayName }),
+      })
+      if (viewerSubjectId !== undefined && viewerDisplayName !== undefined) {
+        rememberOwnerDisplay({ subjectId: viewerSubjectId, displayName: viewerDisplayName })
+      }
+    })
+  const build = readJson(`${basePath}/health`, signal).then((result) => {
+    if (!current() || result.kind !== 'readable') return
+    const relay = readText(result.body, 'release_id') ?? readText(result.body, 'git_sha')
+    if (relay !== undefined) noteFacts({ relay })
+  })
+  await Promise.all([share, build])
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-model.tsx b/packages/experimental/liveshare/src/client/viewer-model.tsx
new file mode 100644
index 0000000000..c814761b54
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-model.tsx
@@ -0,0 +1,215 @@
+/**
+ * The viewer composer's model seat: the Session's model and reasoning effort, stated and not selectable.
+ *
+ * The served page renders the owner's Session, so the model it runs on and the reasoning effort it
+ * asks for are facts about that Session rather than choices for the reader. This seat fills the
+ * composer's own model position — where a DSH user looks for it — with that model's name, or its id
+ * before the catalog arrives, and with the effort the next request would use. It renders through
+ * {@link ViewerSeat}, whose `readOnly` switch is what keeps it a label.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-model
+ */
+
+import { useEffect, useState, useSyncExternalStore, type ReactNode } from 'react'
+import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/dsh-api-remotes/client'
+import type {} from '@deepseek-ai/dsh-api-session-controller/client'
+import type {} from '@deepseek-ai/dsh-client-ui-renderer/client'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import { NS } from './locales.ts'
+import { ViewerSeat, VIEWER_SEAT_PRIORITY } from './viewer-seat.tsx'
+
+export const name = 'liveshare-viewer-model'
+
+/** Composer slot registry, the Session list, and the Remote face the model catalog comes from. */
+export const inject: readonly string[] = ['slots', 'sessions', 'remote', 'remote.session']
+
+/** One exact model route, as the Session's own selection fold states it. */
+interface StatedModel {
+  readonly provider: string
+  readonly model: string
+  /** Reasoning effort the next request would use; absent when the Session states none. */
+  readonly reasoningEffort?: string
+}
+
+/** The durable selection fold: what the last request used and what the next one would use. */
+interface SelectionFold {
+  readonly lastUsed: StatedModel | null
+  readonly next: StatedModel | null
+}
+
+/** One effort level an adapter advertises for an exact model route. */
+interface CatalogEffort {
+  readonly id: string
+  readonly name: string
+}
+
+/** Selectable reasoning metadata one catalog entry carries for its route. */
+interface CatalogReasoning {
+  readonly efforts: readonly CatalogEffort[]
+  readonly defaultEffort?: string
+}
+
+/** One provider's advertised models, read only to prefer a display name over the model id. */
+interface CatalogGroup {
+  readonly id: string
+  readonly models: readonly {
+    readonly id: string
+    readonly name: string
+    readonly reasoning?: CatalogReasoning
+  }[]
+}
+
+/** The observation face the Session store exposes for one projection key. */
+interface ObservedFold {
+  subscribe(listener: () => void): () => void
+  getSnapshot(): unknown
+}
+
+/** The Host's advisory catalog: the default route plus the display names to label it with. */
+interface Catalog {
+  readonly default: StatedModel
+  readonly groups: readonly CatalogGroup[]
+}
+
+/** Everything the seat reads: the Session's fold and the Host catalog. */
+export interface ViewerModelSeatProps {
+  /** Whether the composer's own owner disabled the seat; a stated model stays a label either way. */
+  readonly locked: boolean
+  /** The Session's durable model-selection fold, absent until the Session is bound. */
+  readonly selection: ObservedFold | undefined
+  /** Read the Host's advisory catalog, or undefined when it cannot be read. */
+  readonly catalog: () => Promise<Catalog | undefined>
+}
+
+/** Display names and effort names keyed by provider and model id, from the catalog this Host serves. */
+interface CatalogNames {
+  readonly models: Map<string, string>
+  readonly efforts: Map<string, Map<string, string>>
+}
+
+/**
+ * Index the catalog's own names.
+ * @param groups - Provider groups the Host reported.
+ * @returns Display names by route, and effort names by route and effort id.
+ */
+function catalogNames(groups: readonly CatalogGroup[]): CatalogNames {
+  const models = new Map<string, string>()
+  const efforts = new Map<string, Map<string, string>>()
+  for (const group of groups) {
+    for (const model of group.models) {
+      const route = `${group.id}/${model.id}`
+      models.set(route, model.name)
+      if (model.reasoning !== undefined) {
+        efforts.set(route, new Map(model.reasoning.efforts.map(level => [level.id, level.name])))
+      }
+    }
+  }
+  return { models, efforts }
+}
+
+/** Reasoning metadata by route, read to resolve the effort the Session would use. */
+function catalogReasoning(groups: readonly CatalogGroup[]): Map<string, CatalogReasoning> {
+  const reasoning = new Map<string, CatalogReasoning>()
+  for (const group of groups) {
+    for (const model of group.models) {
+      if (model.reasoning !== undefined) reasoning.set(`${group.id}/${model.id}`, model.reasoning)
+    }
+  }
+  return reasoning
+}
+
+/**
+ * The effort this seat states, in the reader's words.
+ *
+ * The Session's own selection wins, and a Session that has not chosen one shows the route's
+ * provider default — the same answer the owner's own selector shows for the next request. A route
+ * with no reasoning metadata, and one whose catalog entry carries no matching level, states the raw
+ * effort id rather than inventing a label; a Session that states no effort at all states none.
+ * @param model - The route the Session would use.
+ * @param names - Effort names indexed from the catalog.
+ * @param reasoning - Reasoning metadata indexed from the catalog.
+ * @returns The effort's label, or undefined when nothing states an effort.
+ */
+function effortLabel(
+  model: StatedModel,
+  names: CatalogNames,
+  reasoning: Map<string, CatalogReasoning>,
+): string | undefined {
+  const route = `${model.provider}/${model.model}`
+  const effort = model.reasoningEffort ?? reasoning.get(route)?.defaultEffort
+  if (effort === undefined) return undefined
+  return names.efforts.get(route)?.get(effort) ?? effort
+}
+
+/**
+ * Render the model and reasoning effort this Session runs on.
+ * @param props - the Session's selection fold, the catalog reader, and the framework-injected
+ *   translate seat.
+ * @returns the seat, or nothing until the Session states a model.
+ */
+export function ViewerModelSeat(
+  { selection, catalog, t }: ViewerModelSeatProps & PropsLocale<typeof NS>,
+): ReactNode {
+  const fold = useSyncExternalStore(
+    listener => selection?.subscribe(listener) ?? (() => {}),
+    () => selection?.getSnapshot(),
+  ) as SelectionFold | undefined
+  const [names, setNames] = useState<CatalogNames>()
+  const [reasoning, setReasoning] = useState<Map<string, CatalogReasoning>>()
+  const [fallback, setFallback] = useState<StatedModel>()
+  useEffect(() => {
+    let cancelled = false
+    void catalog()
+      .then((value) => {
+        if (cancelled || value === undefined) return
+        setNames(catalogNames(value.groups))
+        setReasoning(catalogReasoning(value.groups))
+        setFallback(value.default)
+      })
+      .catch(() => { /* an unreadable catalog leaves the model id stated */ })
+    return () => { cancelled = true }
+  }, [catalog])
+  // The Session's own selection wins; the Host's default speaks for a Session that has not chosen
+  // one yet, which is the same answer the owner's own selector shows.
+  const model = fold?.next ?? fallback
+  if (model === undefined) return null
+  const route = `${model.provider}/${model.model}`
+  const effort = names === undefined || reasoning === undefined
+    ? model.reasoningEffort
+    : effortLabel(model, names, reasoning)
+  return (
+    <ViewerSeat
+      kind="model"
+      value={[names?.models.get(route) ?? model.model, effort].filter(part => part !== undefined).join(' · ')}
+      title={t('viewer.model.title')}
+      note={t('viewer.model.locked')}
+      readOnly
+    />
+  )
+}
+
+/**
+ * Fill the composer's model seat with the Session's model.
+ * @param ctx - the viewer page's root context.
+ */
+export function apply(ctx: ClientContext): void {
+  ctx.inject(['slots', 'sessions', 'remote', 'remote.session'], (scope: ClientContext) => {
+    scope.slots.inject('conversation.input.model', () => scope.slots.register({
+      name: 'conversation.input.model',
+      priority: VIEWER_SEAT_PRIORITY,
+      locale: NS,
+      inject: (sessionId: SessionId) => ({
+        selection: scope.sessions.binding(sessionId)?.session.projections.faceOf('modelSelection'),
+        catalog: async () => {
+          const response = await scope.remote.session.modelCatalog() as {
+            readonly ok: boolean
+            readonly value: Catalog
+          }
+          return response.ok ? { default: response.value.default, groups: response.value.groups } : undefined
+        },
+      }),
+    }, ViewerModelSeat))
+  })
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-permission.tsx b/packages/experimental/liveshare/src/client/viewer-permission.tsx
new file mode 100644
index 0000000000..f576a7f612
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-permission.tsx
@@ -0,0 +1,89 @@
+/**
+ * The viewer composer's permission seat: which tier this share carries, stated and not selectable.
+ *
+ * A reader cannot change what the owner granted, so the seat states the share's own answer — the
+ * tier the Relay reported for this share — and says in the page that the reader cannot change it.
+ * It renders through {@link ViewerSeat}, whose `readOnly` switch is what keeps it a label; the
+ * shipped permission control is shadowed here, because the owner's own preset for the Session is
+ * not this reader's permission and offering it would offer a change nothing may make.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-permission
+ */
+
+import { useSyncExternalStore, type ReactNode } from 'react'
+import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/dsh-client-ui-renderer/client'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import { type LiveshareKey, NS, type ViewerTranslate } from './locales.ts'
+import { viewerCapabilities, type ViewerCapabilities } from './viewer-capabilities.ts'
+import { ViewerSeat, VIEWER_SEAT_PRIORITY } from './viewer-seat.tsx'
+
+export const name = 'liveshare-viewer-permission'
+
+/** Composer slot registry this seat occupies. */
+export const inject: readonly string[] = ['slots']
+
+/** The observation face this page's capability store exposes. */
+interface CapabilityFace {
+  subscribe(listener: () => void): () => void
+  getSnapshot(): ViewerCapabilities
+}
+
+/** Everything the seat reads: what the share's own answer granted this page. */
+export interface ViewerPermissionSeatProps {
+  /** Whether the composer's own owner disabled the seat; a stated tier stays a label either way. */
+  readonly locked: boolean
+  /** The one capability set this page holds for the share it presents. */
+  readonly capabilities: CapabilityFace
+}
+
+/**
+ * The tier this seat states, in the reader's words.
+ *
+ * The share's own answer decides; a page that could not read one states that it has not confirmed
+ * the share rather than naming the narrowest tier as though the share had said it.
+ * @param page - What the share's answer granted this page.
+ * @param t - Translate seat bound to this package's namespace.
+ * @returns The tier's label.
+ */
+function tierValue(page: ViewerCapabilities, t: ViewerTranslate): string {
+  if (page.unconfirmed === true) return t('viewer.permission.unconfirmed')
+  return t(`dialog.sessionMode.${page.mode}` as const satisfies LiveshareKey)
+}
+
+/**
+ * Render the permission this share carries.
+ * @param props - the share's own capability answer and the framework-injected translate seat.
+ * @returns The seat as a label.
+ */
+export function ViewerPermissionSeat({ capabilities, t }: ViewerPermissionSeatProps & PropsLocale<typeof NS>): ReactNode {
+  const page = useSyncExternalStore(
+    listener => capabilities.subscribe(listener),
+    () => capabilities.getSnapshot(),
+  )
+  return (
+    <ViewerSeat
+      kind="permission"
+      value={tierValue(page, t)}
+      title={t('viewer.permission.title')}
+      note={t('viewer.permission.locked')}
+      readOnly
+    />
+  )
+}
+
+/**
+ * Fill the composer's permission seat with the share's own tier.
+ * @param ctx - the viewer page's root context.
+ */
+export function apply(ctx: ClientContext): void {
+  ctx.inject(['slots'], (scope: ClientContext) => {
+    scope.slots.inject('conversation.input.permission', () => scope.slots.register({
+      name: 'conversation.input.permission',
+      priority: VIEWER_SEAT_PRIORITY,
+      locale: NS,
+      inject: (_sessionId: SessionId) => ({ capabilities: viewerCapabilities }),
+    }, ViewerPermissionSeat))
+  })
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-seat.module.css b/packages/experimental/liveshare/src/client/viewer-seat.module.css
new file mode 100644
index 0000000000..6047650e54
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-seat.module.css
@@ -0,0 +1,28 @@
+.seat {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  padding: 0 6px;
+  border: none;
+  background: none;
+  color: var(--dsw-alias-label-tertiary);
+  font: inherit;
+  font-size: 12px;
+  white-space: nowrap;
+}
+
+/* A read-only seat is a label, not a control: it states the restriction in its own text. */
+.seat[aria-disabled='true'] {
+  cursor: default;
+  opacity: 0.65;
+}
+
+.value {
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.note {
+  font-size: 11px;
+  opacity: 0.85;
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-seat.tsx b/packages/experimental/liveshare/src/client/viewer-seat.tsx
new file mode 100644
index 0000000000..4b744aef02
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-seat.tsx
@@ -0,0 +1,76 @@
+/**
+ * One composer seat a viewer page states but does not choose.
+ *
+ * A viewer page renders the owner's Session, so the seats a DSH user picks from — the model the
+ * Session runs on, the permission the share carries — are facts about that Session rather than
+ * choices for the reader. This component is the one place that states such a fact, and the one
+ * switch that decides whether the reader may change it: `readOnly` renders a label, and the
+ * interactive form is the other branch of the same component rather than a second control kept in
+ * step by hand.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-seat
+ */
+
+import type { ReactNode } from 'react'
+import css from './viewer-seat.module.css'
+
+/**
+ * Rank at which the viewer's seats register into the composer's single slots.
+ *
+ * A single slot renders its lowest-ranked live entry and throws when a second registration repeats an
+ * occupied rank, so a served page — which mounts the owner's own plugins — must register below their
+ * default rank 0 rather than beside it. This is the shadow rank the shipped seats are replaced
+ * through; it sits below the default rank every shipped registration of these seats uses.
+ */
+export const VIEWER_SEAT_PRIORITY = -10
+
+/** Which fact one seat states; also the seat's own data attribute. */
+export type ViewerSeatKind = 'model' | 'permission'
+
+/** One read-only or selectable statement about the Session this page presents. */
+export interface ViewerSeatProps {
+  /** Fact this seat states. */
+  readonly kind: ViewerSeatKind
+  /** What this seat states, already localized. */
+  readonly value: string
+  /** Longer statement of the same fact, used as the seat's tooltip. */
+  readonly title: string
+  /**
+   * Visible statement of the restriction, so a reader who never hovers still learns why the seat is
+   * not theirs to change.
+   */
+  readonly note: string
+  /**
+   * Whether this seat is a label.
+   *
+   * Every viewer seat states `true` today: the share's grants let a viewer drive the Session, never
+   * reconfigure it. A `false` value renders the same component as a control that calls
+   * {@link ViewerSeatProps.select}, which is the wiring point for a future grant.
+   */
+  readonly readOnly: boolean
+  /** What the selectable form does. Read only when {@link ViewerSeatProps.readOnly} is false. */
+  readonly select?: () => void
+}
+
+/**
+ * Render one statement about the shared Session.
+ * @param props - the fact to state, its explanation, and whether it is selectable.
+ * @returns The seat as a label, or as the control the same fact would be chosen with.
+ */
+export function ViewerSeat({ kind, value, title, note, readOnly, select }: ViewerSeatProps): ReactNode {
+  const attribute = { 'data-liveshare-viewer-seat': kind }
+  const body = (
+    <>
+      <span className={css.value}>{value}</span>
+      <span className={css.note}>{note}</span>
+    </>
+  )
+  if (readOnly) {
+    return (
+      <span className={css.seat} aria-disabled="true" title={title} {...attribute}>{body}</span>
+    )
+  }
+  return (
+    <button type="button" className={css.seat} title={title} onClick={select} {...attribute}>{body}</button>
+  )
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-session-plugin.ts b/packages/experimental/liveshare/src/client/viewer-session-plugin.ts
new file mode 100644
index 0000000000..9629774ae0
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-session-plugin.ts
@@ -0,0 +1,334 @@
+/**
+ * Viewer-local plugin that reads the share the page presents and opens its one shared Session.
+ *
+ * The Liveshare client face mounts this plugin only on a viewer page, in place of the owner's Share
+ * action. The share's own answer — who owns it and what mode it grants this page — is read here and
+ * states the page's condition; which writes each Session offers comes from the calling Peer's access
+ * snapshot, which every surface reads through its own access Hook.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-session-plugin
+ */
+
+import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import type { ComposerBlock } from '@deepseek-ai/dsh-client-ui-conversation/client'
+import type { HostObservable } from '@deepseek-ai/dsh-client-ui-slots'
+import type { ConnectionHandle } from '@deepseek-ai/dsh-client-connection/client'
+// Type-only: pulls the `remoteAccess` Client service merge.
+import type {} from '@deepseek-ai/dsh-api-remote-access/client'
+// Type-only: pulls the `locale` Client service merge.
+import type {} from '@deepseek-ai/dsh-client-locale/client'
+import { openSharedSession } from './viewer-session.ts'
+import {
+  PAGE_WIDE_REFUSALS,
+  resetViewerCapabilities,
+  viewerCapabilities,
+  type ViewerCapabilities,
+} from './viewer-capabilities.ts'
+import { readViewerContext, resetViewerContext } from './viewer-context.ts'
+import { NS, viewerReasonText, type ViewerTranslate } from './locales.ts'
+import { noteViewerStatusFacts, resetViewerStatus, viewerStatus } from './viewer-status.ts'
+import { mountViewerStatusBanner, type ViewerStatusAction } from './viewer-status-banner.ts'
+
+export const name = 'liveshare-viewer-session'
+
+/**
+ * The session list says when this page's Session exists, Workspace navigation selects it, the access
+ * snapshot says which Sessions this page may prompt, and the Connection says whether reads reach the
+ * owner.
+ */
+export const inject: readonly string[] = ['sessions', 'uiWorkspace', 'remoteAccess', 'connection', 'locale']
+
+/**
+ * Which mount of this plugin currently owns the page's module-level stores.
+ *
+ * The stores live at module scope so the viewer's slot seats read them without a service. Their owner
+ * is the mount that created them: a mount clears them when it starts, and a disposal clears them only
+ * while it is still the owning mount, so a replaced page's delayed teardown cannot wipe the state its
+ * successor already read.
+ */
+let pageLifecycle = 0
+
+/** Return the page's stores to the state a page that read nothing holds. */
+function resetViewerPageState(): void {
+  resetViewerContext()
+  resetViewerCapabilities()
+  resetViewerStatus()
+}
+
+/**
+ * The Relay's sign-in entry, asked to return the reader to the page they left.
+ *
+ * A viewer page names its share in the query (`?shareId=...`), so the return address keeps the query
+ * as well as the path: a sign-in that returned to the bare path would drop the share the reader is
+ * signing in for. The fragment never leaves the page — a single-page app may keep a one-time
+ * hand-off there — and the Relay accepts only a relay-relative path as a return address.
+ * @param origin - Origin the Relay is served on.
+ * @param basePath - Relay base path this page is served under.
+ * @param page - The page's own path and query.
+ * @returns The absolute sign-in entry carrying the page's return address.
+ */
+export function viewerSignInHref(
+  origin: string,
+  basePath: string,
+  page: { readonly pathname: string; readonly search: string },
+): string {
+  const returnTo = `${page.pathname}${page.search}`
+  return `${origin}${basePath}/__liveshare/auth/start?returnTo=${encodeURIComponent(returnTo)}`
+}
+
+/** Branch facts the owner host publishes for one Session, under its `forkLineage` projection key. */
+interface ForkLineageFacts {
+  readonly origin?: unknown
+  readonly authoredByViewer?: unknown
+}
+
+/** Session list row facts this plugin reads: the projection values the Host published for it. */
+interface ChildFacts {
+  readonly projectionValues?: { readonly forkLineage?: ForkLineageFacts }
+}
+
+/**
+ * Whether one listed Session is a branch this page created.
+ * @param row - One session list row as the store publishes it.
+ * @returns True when the Host published that row as this page's own branch.
+ */
+function isOwnFork(row: unknown): boolean {
+  const lineage = (row as ChildFacts | undefined)?.projectionValues?.forkLineage
+  return lineage?.origin === 'fork' && lineage.authoredByViewer === true
+}
+
+/** Session list face this plugin reads; only the members it uses are declared. */
+interface SessionsView {
+  readonly list: {
+    getSnapshot(): {
+      readonly byId: Readonly<Record<string, unknown>>
+    }
+    subscribe(observer: () => void): () => void
+  }
+  scope(sessionId: string): { get(name: string): unknown } | undefined
+}
+
+/** Session-scoped conversation face exposing the composer block registry. */
+interface ConversationView {
+  readonly blocks: { set(sessionId: string, block: ComposerBlock | undefined): void }
+}
+
+/**
+ * Read the share, open the Session the served document names, and keep every composer honest.
+ *
+ * A viewer may read the shared Session and nothing else unless the owner grants more. The
+ * framework's own composer block is the way to say that: while the access snapshot excludes
+ * `session/prompt` for a Session, the block disables the input and renders the page's reason, and the
+ * composer itself withholds Send and Stop, so the read-only transcript keeps streaming without a send
+ * affordance. Page disposal cancels and awaits bootstrap, focus, and retry reads; late answers cannot
+ * publish.
+ * @param ctx - browser context of the viewer's module table.
+ */
+export function apply(ctx: ClientContext): void {
+  const t = ctx.locale.bind(NS)
+  const lifecycle = ++pageLifecycle
+  // The plugin's fiber owns the page's stores: a page starts from the empty state, and a disposed or
+  // HMR-replaced page releases what it read instead of leaving it for the next mount or the next share.
+  resetViewerPageState()
+  ctx.effect(() => () => {
+    if (lifecycle !== pageLifecycle) return
+    resetViewerPageState()
+  }, 'liveshare: release the page state with its plugin')
+  /* v8 ignore next -- the effect below assigns this before apply returns. */
+  let refreshContext: () => void = () => {}
+  /**
+   * Perform the action one state offers, so no state ends at a statement the reader cannot act on.
+   * @param action - Action the reader asked for.
+   */
+  const act = (action: ViewerStatusAction): void => {
+    const target = (globalThis as {
+      __DSH_LIVESHARE_VIEWER__?: { readonly shareId?: string; readonly basePath?: string }
+    }).__DSH_LIVESHARE_VIEWER__
+    const base = target?.basePath ?? ''
+    if (action === 'reload') {
+      location.reload()
+      return
+    }
+    if (action === 'sign-in') {
+      // The Relay owns the sign-in transaction; this page only sends the reader to it. The page's own
+      // query is part of the address: it names the share the reader signed in for.
+      location.href = viewerSignInHref(location.origin, base, location)
+      return
+    }
+    if (action === 'directory') {
+      location.href = `${location.origin}${base}/`
+      return
+    }
+    // Retry: read the share's own answer again, which is what moves offline, unavailable, and
+    // unconfirmed states forward. The page keeps stating the current state until a newer answer
+    // replaces it.
+    refreshContext()
+  }
+  // The page states its own condition. The client UI renders its shell whether or not the share can be
+  // read, so a reader whose owner is offline, whose share ended, or whose sign-in lapsed would otherwise
+  // see an empty page with no idea which of those it is.
+  const banner = mountViewerStatusBanner(document, act, t)
+  ctx.effect(() => {
+    const paint = (): void => { banner.update(viewerStatus.getSnapshot()) }
+    const stop = viewerStatus.subscribe(paint)
+    // The statement is plain DOM rather than a slot-rendered surface, so it repaints from the locale
+    // face itself when the reader's language changes.
+    const stopLocale = ctx.locale.subscribe(paint)
+    paint()
+    return () => {
+      stop()
+      stopLocale()
+      banner.dispose()
+    }
+  }, 'liveshare: state why the page shows no Session')
+  // A Connection that lost its carrier cannot read the Session right now; the Connection layer
+  // reconnects by itself, so the page states `offline` until a generation is connected again.
+  ctx.effect(() => {
+    const state = (ctx.get('connection') as ConnectionHandle).state
+    const note = (): void => {
+      const current = state.getSnapshot()
+      if (current === 'connected') noteViewerStatusFacts({ feedFailed: false })
+      else if (current === 'disconnected') noteViewerStatusFacts({ feedFailed: true })
+    }
+    const stop = state.subscribe(note)
+    note()
+    return stop
+  }, 'liveshare: state a lost Connection as offline')
+  const target = (globalThis as {
+    __DSH_LIVESHARE_VIEWER__?: {
+      readonly shareId?: string
+      readonly sessionId?: string
+      readonly basePath?: string
+    }
+  }).__DSH_LIVESHARE_VIEWER__
+  // The share's own answer says who owns it and what it grants this page. It arrives when it arrives:
+  // every surface re-reads it, so the Session opens as soon as the list carries it rather than waiting
+  // for an answer that a stalled Relay may never send.
+  ctx.effect(() => {
+    const lifetime = new AbortController()
+    const reads = new Set<Promise<void>>()
+    const readContext = (): Promise<void> => {
+      const read = readViewerContext(target?.basePath ?? '', target?.shareId ?? '', lifetime.signal)
+      reads.add(read)
+      void read.finally(() => { reads.delete(read) })
+      return read
+    }
+    const refresh = (): void => { if (!document.hidden) void readContext() }
+    refreshContext = () => { void readContext() }
+    window.addEventListener('focus', refresh)
+    document.addEventListener('visibilitychange', refresh)
+    void readContext()
+    return async () => {
+      /* v8 ignore next -- a disposed page's banner is removed with its action listeners. */
+      refreshContext = () => {}
+      lifetime.abort()
+      window.removeEventListener('focus', refresh)
+      document.removeEventListener('visibilitychange', refresh)
+      await Promise.all(reads)
+    }
+  }, 'liveshare: re-read the share when the reader returns')
+  openSharedSession(ctx)
+  const sessionId = target?.sessionId
+  if (sessionId === undefined || sessionId === '') return
+  const sessions = ctx.get('sessions') as SessionsView | undefined
+  /* v8 ignore next -- `sessions` is in this plugin's inject list, so apply runs only once it exists. */
+  if (sessions === undefined) return
+  /**
+   * Keep every composer on this page honest. Each Session states what this page holds for it: the
+   * Sessions the page presents or created, plus whatever Session the reader has switched to, so a
+   * switch to a Session whose reach the page has not read states that fact instead of inheriting the
+   * answers of the Session it came from.
+   *
+   * Only the Sessions this page presents, created, or has switched to are addressed: reading a scope
+   * materializes one for any listed Session, and a page that may not write a row has no business
+   * building a scope for every row it can list.
+   * @param follow - Subscribe to one addressed Session's prompt answer.
+   */
+  const syncBlocks = (follow: (sessionId: string) => HostObservable<boolean>, tracked: Set<string>): void => {
+    const snapshot = sessions.list.getSnapshot()
+    const addressed = new Set<string>([sessionId])
+    // The main view's own retain count is what says which Session the reader has selected.
+    const current = Object.values(snapshot.byId)
+      .find(row => ((row as { readonly retainedBy?: { readonly mainView?: number } }).retainedBy?.mainView ?? 0) > 0)
+    if (current !== undefined) addressed.add((current as { readonly id: string }).id)
+    for (const listed of Object.keys(snapshot.byId)) {
+      if (isOwnFork(snapshot.byId[listed])) addressed.add(listed)
+    }
+    for (const listed of addressed) {
+      tracked.add(listed)
+      const prompt = follow(listed)
+      const conversation = sessions.scope(listed)?.get('conversation') as ConversationView | undefined
+      if (conversation === undefined) continue
+      // A Session this page may prompt carries no block: the branch it created, and in write mode also
+      // the Session the owner opened.
+      if (prompt.getSnapshot()) {
+        conversation.blocks.set(listed, undefined)
+        continue
+      }
+      conversation.blocks.set(listed, {
+        reason: blockReason(listed === sessionId, isOwnFork(snapshot.byId[listed]), viewerCapabilities.getSnapshot(), t),
+      })
+    }
+  }
+  ctx.effect(() => {
+    const followed = new Map<string, () => void>()
+    // The Sessions this effect addressed, so disposal can clear every block it raised instead of leaving
+    // the page's composers blocked after the plugin is gone.
+    const tracked = new Set<string>()
+    const publish = (): void => { syncBlocks(follow, tracked) }
+    const follow = (id: string): HostObservable<boolean> => {
+      const source = ctx.remoteAccess.source('session', id, 'session/prompt')
+      if (!followed.has(id)) followed.set(id, source.subscribe(publish))
+      return source
+    }
+    const stopList = sessions.list.subscribe(publish)
+    const stopCapabilities = viewerCapabilities.subscribe(publish)
+    publish()
+    return () => {
+      stopList()
+      stopCapabilities()
+      for (const stop of followed.values()) stop()
+      for (const listed of tracked) {
+        const conversation = sessions.scope(listed)?.get('conversation') as ConversationView | undefined
+        conversation?.blocks.set(listed, undefined)
+      }
+    }
+  }, 'liveshare: keep the viewer composer honest')
+}
+
+/**
+ * Reason one Session's composer states while this page may not prompt it.
+ *
+ * The access snapshot answers only whether a Session may be prompted, so the reason comes from the
+ * page's own share answer: a Session's own refusal code does not reach the page.
+ * @param isSource - Whether this is the Session the share was made for.
+ * @param isOwnFork - Whether this is a branch this page created.
+ * @param page - What the share's own answer grants this page, and the code behind it when it named one.
+ * @returns The reason text the blocked composer states.
+ */
+function blockReason(
+  isSource: boolean,
+  isOwnFork: boolean,
+  page: ViewerCapabilities,
+  t: ViewerTranslate,
+): string {
+  const reason = page.reason
+  // A share whose answer never arrived is not confirmed to be read-only: the page states that it
+  // cannot confirm the share's state, and neither claims the share was stopped nor presents an access
+  // it was never told it still has.
+  if (page.unconfirmed === true) return viewerReasonText(t, 'unconfirmed')
+  // A share that is gone, or one this reader was removed from, is the reader's real reason, on the
+  // shared Session and on every branch of it.
+  if (reason !== undefined && PAGE_WIDE_REFUSALS.has(reason)) return viewerReasonText(t, reason)
+  // A branch this page made is driven in either tier, so a snapshot that still refuses its prompt means
+  // the branch itself lost its grant: the owner turned the share's fork switch off, or withdrew the
+  // share that carried it. The page states that fork verdict — with the code the share named when it
+  // named one — rather than the read-only note, which would claim a reach this Session no longer has.
+  if (!isSource && isOwnFork) return viewerReasonText(t, reason ?? 'fork-not-permitted')
+  // The share grants writing this Session, and nothing above explains the blocked composer: the missing
+  // permission is not the reason, so the page states the narrower fact instead of claiming the share is
+  // read-only. The owner's own code for it — `source-write-unavailable` — is not published with the share
+  // answer, so this build names the state without it rather than inventing one.
+  if (isSource && page.mode === 'write') return t('viewer.writeUnavailableNote')
+  return t('viewer.readonlyNote')
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-session-row.tsx b/packages/experimental/liveshare/src/client/viewer-session-row.tsx
new file mode 100644
index 0000000000..ce2e0d00d6
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-session-row.tsx
@@ -0,0 +1,47 @@
+/**
+ * The viewer page's branch lineage markers.
+ *
+ * The viewer renders the normal sidebar. Its Session menu actions belong to
+ * ui-workspace and follow the page's endpoint access snapshot. Branch creation
+ * uses the Workspace navigation service's reader path, without a title write
+ * the reader does not hold, and opens the child once the Host lists it.
+ *
+ * The Liveshare client face mounts this module only on a viewer page.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-session-row
+ */
+
+import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import { IconBranchOutlineRegular, Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PropsLocale, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+import type { SessionProjectionValues } from '@deepseek-ai/dsh-api-session-controller/types'
+import { SessionId } from '@deepseek-ai/dsh-session/types'
+import { NS } from './locales.ts'
+
+export const name = 'liveshare-viewer-session-row'
+
+/** The slot ledger and locale seat used by branch lineage markers. */
+export const inject: readonly string[] = ['slots', 'locale']
+
+/** Liveshare interprets its own lineage projection without retaining every listed Session. */
+function ViewerForkMarker({ sessionId, useSessions, t }: PropsRuntime<'sidebar.session.row.leading'> & PropsLocale<'liveshare'>) {
+  const lineage = useSessions((list) => {
+    const values = list.byId[sessionId]?.projectionValues as SessionProjectionValues | undefined
+    const value = values?.['forkLineage']
+    if (typeof value !== 'object' || value === null || Array.isArray(value)
+      || value.origin !== 'fork' || value.workspaceReadOnly !== true) return undefined
+    return typeof value.sourceSessionId === 'string' ? value.sourceSessionId : ''
+  })
+  const sourceTitle = useSessions(list => lineage ? list.byId[SessionId(lineage)]?.title : undefined)
+  if (lineage === undefined) return null
+  const label = sourceTitle ? t('viewer.row.forkSource', { title: sourceTitle }) : t('viewer.row.fork')
+  return <Tooltip label={label}><span><IconBranchOutlineRegular size={14} /></span></Tooltip>
+}
+/**
+ * Register the viewer's branch lineage marker.
+ * @param ctx - browser context of the viewer's module table.
+ */
+export function apply(ctx: ClientContext): void {
+  ctx.effect(() => ctx.slots.inject('sidebar.session.row.leading', () => ctx.slots.register({
+    name: 'sidebar.session.row.leading', id: 'liveshare.fork', locale: NS,
+  }, ViewerForkMarker)), 'liveshare: branch lineage marker')
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-session.ts b/packages/experimental/liveshare/src/client/viewer-session.ts
new file mode 100644
index 0000000000..ddfe3c2f5c
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-session.ts
@@ -0,0 +1,67 @@
+/**
+ * Select the one Session a viewer page presents.
+ *
+ * The viewer page presents exactly one shared Session, so it opens that Session as soon as the
+ * session list carries it instead of leaving the empty "new session" home page a signed-in viewer
+ * cannot act on.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-session
+ */
+
+import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import type { SessionId } from '@deepseek-ai/dsh-client-connection/client'
+// Type-only: pulls the Workspace navigation service merge (`ctx.uiWorkspace`).
+import type {} from '@deepseek-ai/dsh-client-ui-workspace/client'
+
+/**
+ * Share one served viewer page presents. Restated from the protocol package because this Client
+ * face may not import its root entry, which also carries the Host-only wire and identity modules.
+ */
+interface ViewerPageTarget {
+  readonly basePath: string
+  readonly shareId: string
+  readonly sessionId: string
+}
+
+interface ViewerTargetWindow {
+  __DSH_LIVESHARE_VIEWER__?: ViewerPageTarget
+}
+
+/**
+ * Open the shared Session once the session list knows it.
+ *
+ * Selecting a Session is the Workspace navigation action's to perform, so this page asks
+ * `uiWorkspace` for the same selection the sidebar's own Session rows ask for; the session list
+ * says when the Host has published the Session this page presents.
+ * @param ctx - browser context of the viewer's module table.
+ */
+export function openSharedSession(ctx: ClientContext): void {
+  const target = (globalThis as ViewerTargetWindow).__DSH_LIVESHARE_VIEWER__
+  if (target === undefined || target.sessionId === '') return
+  const sessions = ctx.get('sessions')
+  if (sessions === undefined) return
+  const wanted = target.sessionId as SessionId
+  const listed = (): boolean => sessions.list.getSnapshot().byId[wanted] !== undefined
+  const open = (): void => { ctx.uiWorkspace.openSession(wanted) }
+  if (listed()) {
+    open()
+    return
+  }
+  ctx.effect(() => {
+    // The subscription is dropped BEFORE the navigation: retaining the Session notifies the list
+    // again, and a listener that opened first would re-enter itself until the stack overflowed. The
+    // flag makes the one open final even if the notifier delivers to this listener once more as it
+    // removes it.
+    let opened = false
+    // The listener closes over the subscription that is created right after it: no notification
+    // can arrive before `subscribe` returns.
+    const onListed = (): void => {
+      if (opened || !listed()) return
+      opened = true
+      unsubscribe()
+      open()
+    }
+    const unsubscribe = sessions.list.subscribe(onListed)
+    return () => { unsubscribe() }
+  }, 'liveshare: open the shared viewer Session')
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-share-path.module.css b/packages/experimental/liveshare/src/client/viewer-share-path.module.css
new file mode 100644
index 0000000000..0efecf5d76
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-share-path.module.css
@@ -0,0 +1,7 @@
+/* The pane body is a scroller of its own; the notice sits where the tab's content starts. */
+.unavailable {
+  margin: 0;
+  padding: 12px;
+  color: var(--dsw-alias-label-tertiary);
+  font-size: var(--dsh-content-font-size-secondary, 13px);
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-share-path.tsx b/packages/experimental/liveshare/src/client/viewer-share-path.tsx
new file mode 100644
index 0000000000..6115cbdd69
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-share-path.tsx
@@ -0,0 +1,102 @@
+/**
+ * The reader page's own answer for a workspace-file address a share cannot open.
+ *
+ * The viewer renders the shipped right Sidebar, which resolves every address through its tab-type
+ * registry and refuses one no type claims. A share hands over workspace paths, not file contents, so
+ * this page claims `dsh-resource://file/**` itself and says so in the tab: the address is answered by
+ * the page that owns the fact, not by Chat's call site.
+ *
+ * The Liveshare client face mounts this module only on a viewer page.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-share-path
+ */
+
+import type { ReactNode } from 'react'
+import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import type { PropsLocale, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
+import type { SidebarRightTabDefinition } from '@deepseek-ai/dsh-client-ui-sidebar-right/client'
+import { NS } from './locales.ts'
+import css from './viewer-share-path.module.css'
+
+export const name = 'liveshare-viewer-share-path'
+
+/** The tab-type registry and the slot ledger; the parent face registers this page's copy. */
+export const inject: readonly string[] = ['slots', 'sidebarRightTabs']
+
+/** This implementation's identity in the tab system; also the key its body registers under. */
+const SHARE_PATH_ID = '@deepseek-ai/dsh-experimental-liveshare/viewer-share-path'
+
+/** The tab kind this page owns. */
+const SHARE_PATH_KIND = 'liveshare-share-path'
+
+/* jscpd:ignore-start -- the address-basename rule is restated here rather than imported: a feature
+ * plugin reaches another plugin's behavior through services and slots, never through its values. */
+/**
+ * The chip text for one `file:` address: its decoded basename.
+ *
+ * Decoded per segment, the way the address was built, so a name carrying `#`, `?`, or a space reads
+ * as itself.
+ * @param address - a `file:`-shaped address.
+ * @returns the decoded last path segment, or the address itself when it has none.
+ */
+function basenameOf(address: string): string {
+  const name = address.slice(address.lastIndexOf('/') + 1)
+  if (name === '') return address
+  try {
+    return decodeURIComponent(name)
+  } catch {
+    // A malformed percent sequence is still a name; showing it raw beats refusing the address.
+    return name
+  }
+}
+/* jscpd:ignore-end */
+
+/**
+ * The type this page claims workspace-file addresses with.
+ *
+ * The `builtin` band keeps this page's own answer behind a real file viewer an extension could add
+ * later, while still outranking the plain-text fallback ui-sidebar-documentpreview ships.
+ * @returns the definition to register.
+ */
+function sharePathDefinition(): SidebarRightTabDefinition {
+  return {
+    id: SHARE_PATH_ID,
+    kind: SHARE_PATH_KIND,
+    patterns: ['dsh-resource://file/**'],
+    priority: 'builtin',
+    title: basenameOf,
+  }
+}
+
+/** The body's composed props: the tab it draws and this page's copy. */
+export type ViewerSharePathBodyProps =
+  PropsRuntime<'sidebar.right.pane.tab'>
+  & PropsLocale<'liveshare'>
+
+/**
+ * State why this page cannot show the file the reader asked for.
+ * @param props - the tab's framework share and this page's locale seat.
+ * @returns the notice body.
+ */
+export function ViewerSharePathBody({ useTabInfo, t }: ViewerSharePathBodyProps): ReactNode {
+  // Reading the occurrence keeps the body bound to the tab it was dispatched for; the address is
+  // the content identity and needs no second store.
+  const { tab } = useTabInfo()
+  return (
+    <p className={css.unavailable} data-liveshare-share-path={tab.contentId}>
+      {t('viewer.sharePath.unavailable')}
+    </p>
+  )
+}
+
+/**
+ * Claim workspace-file addresses on the reader's page and answer them in place.
+ * @param ctx - browser context of the viewer's module table.
+ */
+export function apply(ctx: ClientContext): void {
+  ctx.effect(() => ctx.sidebarRightTabs.register(sharePathDefinition()), 'liveshare: viewer share-path type')
+  ctx.effect(() => ctx.slots.inject('sidebar.right.pane.tab', () => ctx.slots.register(
+    { name: 'sidebar.right.pane.tab', key: SHARE_PATH_ID, locale: NS },
+    ViewerSharePathBody,
+  )), 'liveshare: viewer share-path tab body')
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-status-banner.module.css b/packages/experimental/liveshare/src/client/viewer-status-banner.module.css
new file mode 100644
index 0000000000..eba054142f
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-status-banner.module.css
@@ -0,0 +1,8 @@
+/* The banner is mounted from the served page, outside the client UI's own tree. Its colors use the
+   platform tokens with system-color fallbacks, so it stays readable when the client stylesheet never
+   loads and still follows the deployed theme when it does. */
+.banner {
+  border: 0.5px solid var(--dsw-alias-border-l2, CanvasText);
+  background: var(--dsw-alias-bg-layer-2, Canvas);
+  color: var(--dsw-alias-label-primary, CanvasText);
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-status-banner.ts b/packages/experimental/liveshare/src/client/viewer-status-banner.ts
new file mode 100644
index 0000000000..276fb14816
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-status-banner.ts
@@ -0,0 +1,159 @@
+/**
+ * The page's own statement of why it is not showing the shared Session, and what the reader can do.
+ *
+ * The viewer renders the normal client UI, so a page that cannot read the share would otherwise leave
+ * an empty shell with no way forward. Every state below therefore carries a plain statement, most of
+ * them a hint, and the ones with something to do offer the action itself: re-read, sign in again, ask
+ * the owner, or go back to the share directory. No state ends at an error code the reader cannot use.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-status-banner
+ */
+
+import { type LiveshareKey, type ViewerTranslate } from './locales.ts'
+import type { ViewerStatus } from './viewer-status.ts'
+import css from './viewer-status-banner.module.css'
+
+/** Element id the page's statement owns; one page keeps one. */
+const STATUS_ID = 'liveshare-viewer-status'
+
+/** One thing the reader can do about the state the page is in. */
+export type ViewerStatusAction = 'reload' | 'sign-in' | 'directory' | 'retry'
+
+/** What one state states, and the ways out it offers. */
+interface StatusStep {
+  /** Plain statement of what happened, without a single internal code. */
+  readonly message: LiveshareKey
+  /** What the reader can do about it, when the action alone does not say it. */
+  readonly hint?: LiveshareKey
+  /** Actions this state offers, in the order the page shows them. */
+  readonly actions: readonly { readonly kind: ViewerStatusAction; readonly label: LiveshareKey }[]
+}
+
+/** Every state but `ready` states itself; `ready` shows nothing because the Session speaks for itself. */
+const STATUS_STEPS: Readonly<Record<Exclude<ViewerStatus, 'ready'>, StatusStep>> = {
+  invalid: {
+    message: 'viewer.status.invalid',
+    hint: 'viewer.status.invalidHint',
+    actions: [{ kind: 'directory', label: 'viewer.action.directory' }],
+  },
+  offline: {
+    message: 'viewer.status.offline',
+    hint: 'viewer.status.offlineHint',
+    actions: [{ kind: 'retry', label: 'viewer.action.retry' }],
+  },
+  stopped: {
+    message: 'viewer.status.stopped',
+    hint: 'viewer.status.stoppedHint',
+    actions: [{ kind: 'directory', label: 'viewer.action.directory' }],
+  },
+  expired: {
+    message: 'viewer.status.expired',
+    hint: 'viewer.status.expiredHint',
+    actions: [{ kind: 'directory', label: 'viewer.action.directory' }],
+  },
+  reauthenticate: {
+    message: 'viewer.status.reauthenticate',
+    actions: [{ kind: 'sign-in', label: 'viewer.action.signIn' }],
+  },
+  unavailable: {
+    message: 'viewer.status.unavailable',
+    hint: 'viewer.status.unavailableHint',
+    actions: [{ kind: 'reload', label: 'viewer.action.reload' }],
+  },
+  connecting: {
+    message: 'viewer.status.connecting',
+    actions: [],
+  },
+}
+
+/** One page's statement, rebuilt in place so it never stacks duplicates. */
+export interface ViewerStatusBanner {
+  /**
+   * State the one state the page is in, with the ways out that state offers.
+   * @param status - State the page holds.
+   */
+  update(status: ViewerStatus): void
+  /** Remove the element and its listeners. */
+  dispose(): void
+}
+
+/**
+ * Mount the page's statement of its own state.
+ * @param doc - Document the page renders in.
+ * @param onAction - Performs one action the reader asked for.
+ * @param t - Translate seat bound to this package's namespace.
+ * @returns The banner, which updates one element in place.
+ */
+export function mountViewerStatusBanner(
+  doc: Document,
+  onAction: (action: ViewerStatusAction) => void,
+  t: ViewerTranslate,
+): ViewerStatusBanner {
+  const element = doc.createElement('div')
+  element.id = STATUS_ID
+  element.className = css.banner ?? ''
+  element.setAttribute('role', 'status')
+  element.setAttribute('aria-live', 'polite')
+  // Layout stays inline because this element belongs to the served page rather than to the client UI's
+  // own surfaces; its colors live in the module stylesheet, whose `Canvas`/`CanvasText` fallbacks keep
+  // the banner readable when that stylesheet never loads.
+  Object.assign(element.style, {
+    position: 'fixed',
+    left: '50%',
+    top: '12px',
+    transform: 'translateX(-50%)',
+    zIndex: '2147483000',
+    maxWidth: 'min(640px, calc(100vw - 32px))',
+    padding: '12px 16px',
+    borderRadius: '10px',
+    font: '13px/1.5 system-ui, sans-serif',
+    textAlign: 'center',
+    display: 'none',
+  } satisfies Partial<CSSStyleDeclaration>)
+  const listeners: (() => void)[] = []
+  doc.body.append(element)
+  const clear = (): void => {
+    for (const remove of listeners.splice(0)) remove()
+    element.replaceChildren()
+  }
+  return {
+    update(status) {
+      clear()
+      if (status === 'ready') {
+        element.style.display = 'none'
+        return
+      }
+      const step = STATUS_STEPS[status]
+      const message = doc.createElement('div')
+      message.id = 'liveshare-viewer-status-message'
+      message.textContent = t(step.message)
+      element.append(message)
+      if (step.hint !== undefined) {
+        const hint = doc.createElement('div')
+        hint.id = 'liveshare-viewer-status-hint'
+        hint.style.opacity = '0.8'
+        hint.style.fontSize = '12px'
+        hint.style.marginTop = '2px'
+        hint.textContent = t(step.hint)
+        element.append(hint)
+      }
+      for (const action of step.actions) {
+        const button = doc.createElement('button')
+        button.type = 'button'
+        button.dataset.liveshareAction = action.kind
+        button.textContent = t(action.label)
+        button.style.marginTop = '8px'
+        button.style.cursor = 'pointer'
+        const click = (): void => { onAction(action.kind) }
+        button.addEventListener('click', click)
+        listeners.push(() => { button.removeEventListener('click', click) })
+        element.append(button)
+      }
+      element.style.display = 'block'
+    },
+    dispose() {
+      clear()
+      element.remove()
+    },
+  }
+}
diff --git a/packages/experimental/liveshare/src/client/viewer-status.ts b/packages/experimental/liveshare/src/client/viewer-status.ts
new file mode 100644
index 0000000000..bc41d56619
--- /dev/null
+++ b/packages/experimental/liveshare/src/client/viewer-status.ts
@@ -0,0 +1,107 @@
+/**
+ * What the viewer page states while it cannot show the shared Session's content.
+ *
+ * A reader whose owner is offline, whose share was stopped or expired, or whose own sign-in lapsed must
+ * be told so: the normal client UI renders its own shell either way, and an empty shell reads as a page
+ * that simply has nothing in it. The page therefore keeps one state, derived from the share's own answer
+ * and from the reads its own transport could not complete, and states it in the page.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/client/viewer-status
+ */
+
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+
+/**
+ * One state the page can be in.
+ *
+ * `ready` is the only state that adds nothing: the share answered and its owner's gateway is connected.
+ * `offline` covers an owner that is not connected right now, which the Relay reconnects by itself, and
+ * a content read this page lost in transport, which the Connection layer re-opens with backoff — both
+ * are retried without the reader, so the state promises exactly what happens;
+ * `stopped` and `expired` are the share's own end; `reauthenticate` is the reader's sign-in rather than
+ * the share; `unknown` is a page that has not read an answer it can use yet.
+ */
+export type ViewerStatus =
+  | 'ready'
+  | 'invalid'
+  | 'offline'
+  | 'stopped'
+  | 'expired'
+  | 'reauthenticate'
+  | 'unavailable'
+  | 'connecting'
+
+/** The one state the page states; a page that read nothing yet says so rather than claiming a share. */
+export const viewerStatus = createSnapshotStore<ViewerStatus>('connecting')
+
+/** Facts the page's state is derived from. */
+export interface ViewerStatusFacts {
+  /** Whether the share's owner gateway is connected, as the share's own answer reported it. */
+  readonly ownerOnline?: boolean | undefined
+  /** Stable reason code the share's answer carried, when it carried one. */
+  readonly reason?: string | undefined
+  /** Whether the page's last read of the share answered nothing it could use. */
+  readonly unconfirmed?: boolean | undefined
+  /** Whether a read for this share was refused for want of an authenticated reader. */
+  readonly unauthenticated?: boolean | undefined
+  /** Whether the page's Connection to the owner is down while it reconnects by itself. */
+  readonly feedFailed?: boolean | undefined
+  /** Whether the page could not reach the share at all, as opposed to reading what it said. */
+  readonly unreachable?: boolean | undefined
+  /** Whether the Relay answered that this share is unknown or deleted. */
+  readonly notFound?: boolean | undefined
+}
+
+/** Refusal codes that mean the share itself is over, and the state each one states. */
+const SHARE_END_STATES: Readonly<Record<string, ViewerStatus>> = {
+  'share-stopped': 'stopped',
+  'share-expired': 'expired',
+}
+
+/**
+ * Derive the state the page states from the facts it holds.
+ *
+ * A share the owner ended is that fact whatever else is true, and a refused sign-in is the reader's own
+ * problem rather than the share's. A disconnected owner and a content read that failed are both
+ * `offline`, because both mean the page cannot read the Session right now and both are retried by the
+ * page or the Relay rather than by the reader.
+ * @param facts - What the page has read about this share.
+ * @returns The state to state.
+ */
+export function readViewerStatus(facts: ViewerStatusFacts): ViewerStatus {
+  if (facts.notFound === true) return 'invalid'
+  const ended = facts.reason === undefined ? undefined : SHARE_END_STATES[facts.reason]
+  if (ended !== undefined) return ended
+  if (facts.unauthenticated === true) return 'reauthenticate'
+  if (facts.ownerOnline === false || facts.feedFailed === true) return 'offline'
+  if (facts.unreachable === true) return 'unavailable'
+  if (facts.unconfirmed === true) return 'connecting'
+  return 'ready'
+}
+
+/** Facts the page has read so far; a fact no read has stated stays unstated. */
+export const viewerStatusFacts = createSnapshotStore<ViewerStatusFacts>({})
+
+/**
+ * Return the page's statement to the state a page that read nothing states.
+ *
+ * The viewer session plugin owns both stores' lifetime and calls this when its page starts and ends, so
+ * a remount or HMR replacement states `connecting` instead of another page's offline or ended share.
+ */
+export function resetViewerStatus(): void {
+  viewerStatusFacts.set({})
+  viewerStatus.set('connecting')
+}
+
+/**
+ * Record what one read said about the page's state, and publish the state those facts imply.
+ *
+ * Reads land one at a time — the share's own answer, and the transport's failures — so each note states
+ * only the facts it read and leaves the rest as they were.
+ * @param facts - Facts this read stated.
+ */
+export function noteViewerStatusFacts(facts: ViewerStatusFacts): void {
+  const next = { ...viewerStatusFacts.getSnapshot(), ...facts }
+  viewerStatusFacts.set(next)
+  viewerStatus.set(readViewerStatus(next))
+}
diff --git a/packages/experimental/liveshare/src/css-modules.d.ts b/packages/experimental/liveshare/src/css-modules.d.ts
new file mode 100644
index 0000000000..bc5e482353
--- /dev/null
+++ b/packages/experimental/liveshare/src/css-modules.d.ts
@@ -0,0 +1,6 @@
+declare module '*.module.css' {
+  const classes: Record<string, string>
+  export default classes
+}
+
+declare module '*.css'
diff --git a/packages/experimental/liveshare/src/endpoint-classification.ts b/packages/experimental/liveshare/src/endpoint-classification.ts
new file mode 100644
index 0000000000..343664cb6e
--- /dev/null
+++ b/packages/experimental/liveshare/src/endpoint-classification.ts
@@ -0,0 +1,296 @@
+/**
+ * Why each Remote endpoint may be called on a share viewer's behalf.
+ *
+ * LiveShare refuses by default: the `share-viewer` policy binds only the actions its roles list. This
+ * table states, for every endpoint a Client build can name, which access condition puts that endpoint
+ * on the list, so adding an endpoint cannot silently extend the reader’s reach. The Host derives
+ * `POLICY_DECIDED_ACTIONS` from the `reader-*` entries, the Client compilation face proves the table
+ * covers `RemoteEndpoint`, and the Host asserts at load that the derived set is exactly the actions its
+ * roles list.
+ *
+ * Classes: `reader-*` entries are decided by the share-viewer policy and can never be exposed through
+ * a plugin declaration; `always-allowed` bypasses every policy; `plugin-offered` is reachable only
+ * through a plugin's live declaration and the owner's selection; `owner-only` is never exposed.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/endpoint-classification
+ */
+
+/** Why one Remote endpoint may be called on a share viewer's behalf. */
+export type ViewerEndpointClass =
+  | 'reader-global-read'
+  | 'reader-session-read'
+  | 'reader-workspace-read'
+  | 'reader-session-input'
+  | 'reader-fork'
+  | 'reader-child-rename'
+  | 'always-allowed'
+  | 'plugin-offered'
+  | 'owner-only'
+
+/** The classes the share-viewer policy decides; the Host derives its decided-action set from them. */
+export type ReaderEndpointClass = Extract<ViewerEndpointClass, `reader-${string}`>
+
+/**
+ * Every Remote endpoint this Client build can name, with the access condition that reaches it.
+ *
+ * The Client face checks this record against `Extract<keyof TypertRemoteMap, string>`; a new generated
+ * endpoint without a class fails that compilation. The Host derives `POLICY_DECIDED_ACTIONS` from the
+ * `reader-*` entries, so the policy whitelist has no second handwritten copy.
+ */
+export const VIEWER_ENDPOINT_CLASSES = {
+  // ── reader-global-read ─────────────────────────────────────────────────────────────
+  'llm/listConfigurableProviders': 'reader-global-read', // the page reads the configurable provider catalog
+  'llm/listProviders': 'reader-global-read', // the page lists providers
+  'session/canOpenWorkspacePath': 'reader-global-read', // the page asks whether a path can be opened
+  'session/modelCatalog': 'reader-global-read', // the page reads the model catalog
+
+  // ── reader-session-read ─────────────────────────────────────────────────────────────
+  'commands/list': 'reader-session-read', // the page lists slash commands for a visible Session (also granted globally)
+  'fileUploads/upload': 'reader-session-read', // the reader attaches a file to a Session it can see; visibility alone decides
+  'session/control': 'reader-session-read', // the page follows a visible Session control stream (also granted globally)
+  'session/list': 'reader-session-read', // the page lists Sessions (also granted globally)
+  'goals/get': 'reader-session-read', // the page reads the goal of a visible Session
+  'session/attachment': 'reader-session-read', // the page reads an attachment of a visible Session
+  'session/follow': 'reader-session-read', // the page follows a visible Session
+  'session/page': 'reader-session-read', // the page reads a visible Session page
+  'session/projections': 'reader-session-read', // the page reads visible Session projections
+  'skills/list': 'reader-session-read', // the page lists the skills of a visible Session
+  'session/events': 'reader-session-read', // the page reads the event history of a visible Session
+  'session/observeEvent': 'reader-session-read', // the page follows one visible Session's events
+  'session/observeProjections': 'reader-session-read', // the page follows visible Session projections
+  'session/observeState': 'reader-session-read', // the page follows a visible Session's passive state
+  'session/state': 'reader-session-read', // the page reads a visible Session's passive state
+  'session/wait': 'reader-session-read', // the page waits on a visible Session's passive state
+  'toolResults/watch': 'reader-session-read', // the page inspects retained tool results of a visible Session
+
+  // ── reader-workspace-read ─────────────────────────────────────────────────────────────
+  'workspace/follow': 'reader-workspace-read', // the page follows a Workspace holding a visible Session (also granted globally)
+
+  // ── reader-session-input ─────────────────────────────────────────────────────────────
+  'session/prompt': 'reader-session-input', // the reader prompts the confined source (either tier) or its own child under its ceiling
+  'session/cancel': 'reader-session-input', // the reader stops its own child; a concrete source cancel is performed by the share host
+
+  // ── reader-fork ─────────────────────────────────────────────────────────────
+  'session/fork': 'reader-fork', // the owner allowsFork switch decides the source and the reader’s own forks
+
+  // ── reader-child-rename ─────────────────────────────────────────────────────────────
+  'session/rename': 'reader-child-rename', // the reader renames only its own visible child, never the source
+
+  // ── always-allowed ───────────────────────────────────────────────────────────
+  'remoteAccess/follow': 'always-allowed', // every Peer reads its own access snapshot before any policy
+
+  // ── owner-only ───────────────────────────────────────────────────────────────
+  // No reader role names these and no plugin offers them today, so the conservative class is
+  // owner-only. A plugin that intends to expose one reclassifies it as 'plugin-offered', which still
+  // only makes it eligible for the declaration path; the owner's per-share selection is the grant.
+  'account/ackBonusNotified': 'owner-only', // owner account and sign-in; the served page never reads it
+  'account/cancelSignIn': 'owner-only', // owner account and sign-in; the served page never reads it
+  'account/getBalance': 'owner-only', // owner account and sign-in; the served page never reads it
+  'account/getProfile': 'owner-only', // owner account and sign-in; the served page never reads it
+  'account/getState': 'owner-only', // owner account and sign-in; the served page never reads it
+  'account/getUnnotifiedBonuses': 'owner-only', // owner account and sign-in; the served page never reads it
+  'account/hasRunningAccountTasks': 'owner-only', // owner account and sign-in; the served page never reads it
+  'account/signOut': 'owner-only', // owner account and sign-in; the served page never reads it
+  'account/startSignIn': 'owner-only', // owner account and sign-in; the served page never reads it
+  'account/watch': 'owner-only', // owner account and sign-in; the served page never reads it
+  'account/watchExpiry': 'owner-only', // owner account and sign-in; the served page never reads it
+  'job/follow': 'owner-only', // owner background jobs
+  'job/kill': 'owner-only', // owner background jobs
+  'job/list': 'owner-only', // owner background jobs
+  'fileReferences/list': 'owner-only', // owner composer reference search
+  'session/create': 'owner-only', // owner creates a Session
+  'session/initializeDefaultModel': 'owner-only', // owner initializes a Session default model
+  'session/openWorkspacePath': 'owner-only', // owner opens a Workspace path
+  'session/search': 'owner-only', // owner searches across Sessions
+  'session/selectModel': 'owner-only', // owner selects a Session model
+  'session/updateQueue': 'owner-only', // owner edits queued input
+  'session/workspacePathApplications': 'owner-only', // owner applies a Workspace path
+  'credentials/describe': 'owner-only', // owner credentials; secrets never reach a reader
+  'credentials/set': 'owner-only', // owner credentials; secrets never reach a reader
+  'credentials/unset': 'owner-only', // owner credentials; secrets never reach a reader
+  'settings/describe': 'owner-only', // owner settings
+  'settings/mutate': 'owner-only', // owner settings
+  'settings/openSettingsDocument': 'owner-only', // owner settings
+  'settings/replace': 'owner-only', // owner settings
+  'settings/update': 'owner-only', // owner settings
+  'terminal/attach': 'owner-only', // owner terminals
+  'terminal/close': 'owner-only', // owner terminals
+  'terminal/create': 'owner-only', // owner terminals
+  'terminal/environment': 'owner-only', // owner terminals
+  'terminal/list': 'owner-only', // owner terminals
+  'terminal/rename': 'owner-only', // owner terminals
+  'terminal/retain': 'owner-only', // owner terminals
+  'terminal/shells': 'owner-only', // owner terminals
+  'directoryPicker/createDirectory': 'owner-only', // owner filesystem picker
+  'directoryPicker/list': 'owner-only', // owner filesystem picker
+  'directoryPicker/pick': 'owner-only', // owner filesystem picker
+  'workspace/archiveSession': 'owner-only', // owner archives a Session
+  'workspace/create': 'owner-only', // owner creates a Workspace
+  'workspace/delete': 'owner-only', // owner deletes a Workspace
+  'workspace/initializeDefault': 'owner-only', // owner initializes the default Workspace
+  'workspace/insertBefore': 'owner-only', // owner reorders Workspaces
+  'workspace/insertSessionBefore': 'owner-only', // owner reorders Sessions
+  'workspace/pinSession': 'owner-only', // owner pins a Session
+  'workspace/rename': 'owner-only', // owner renames a Workspace
+  'workspace/unarchiveSession': 'owner-only', // owner unarchives a Session
+  'workspace/unpinSession': 'owner-only', // owner unpins a Session
+  'workspaceFiles/changes': 'owner-only', // owner Workspace file access
+  'workspaceFiles/list': 'owner-only', // owner Workspace file access
+  'workspaceFiles/read': 'owner-only', // owner Workspace file access
+  'workspaceFiles/readBytes': 'owner-only', // owner Workspace file access
+  'workspaceFiles/stat': 'owner-only', // owner Workspace file access
+  'pluginManager/cancelInstall': 'owner-only', // owner plugin management
+  'pluginManager/inspect': 'owner-only', // owner plugin management
+  'pluginManager/installBundle': 'owner-only', // owner plugin management
+  'pluginManager/listBundles': 'owner-only', // owner plugin management
+  'pluginManager/listPlugins': 'owner-only', // owner plugin management
+  'pluginManager/listVersionExemptions': 'owner-only', // owner plugin management
+  'pluginManager/listVersions': 'owner-only', // owner plugin management
+  'pluginManager/readBundleDetail': 'owner-only', // owner plugin management
+  'pluginManager/registries': 'owner-only', // owner plugin management
+  'pluginManager/removeBundle': 'owner-only', // owner plugin management
+  'pluginManager/setBundleEnabled': 'owner-only', // owner plugin management
+  'pluginManager/setPluginEnabled': 'owner-only', // owner plugin management
+  'pluginManager/setVersionExemption': 'owner-only', // owner plugin management
+  'pluginManager/updateBundle': 'owner-only', // owner plugin management
+  'pluginManager/waitForInstall': 'owner-only', // owner plugin management
+  'pluginMarket/listIndexes': 'owner-only', // owner plugin market
+  'pluginMarket/readEntryDetail': 'owner-only', // owner plugin market
+  'pluginMarket/search': 'owner-only', // owner plugin market
+  'pluginMarket/setIndexes': 'owner-only', // owner plugin market
+  'productAnalytics/enabled': 'owner-only', // owner product analytics
+  'productAnalytics/report': 'owner-only', // owner product analytics
+  'productAnalytics/watchPolicy': 'owner-only', // owner product analytics
+  'pluginRegistryProbe/fastest': 'owner-only', // owner plugin registry probe
+  'sessionReferenceResolver/candidates': 'owner-only', // owner composer reference resolution
+  'officeToPdf/generation': 'owner-only', // owner document export
+  'officeToPdf/render': 'owner-only', // owner document export
+  'speech/cancelPreparation': 'owner-only', // owner voice input
+  'speech/catalog': 'owner-only', // owner voice input
+  'speech/configure': 'owner-only', // owner voice input
+  'speech/follow': 'owner-only', // owner voice input
+  'speech/prepare': 'owner-only', // owner voice input
+  'speech/transcribe': 'owner-only', // owner voice input
+  'claudeCodeMods/pressBand': 'owner-only', // owner Claude Code mods UI
+  'claudeCodeMods/watchBand': 'owner-only', // owner Claude Code mods UI
+  'cotTranslation/limits': 'owner-only', // owner chain-of-thought translation UI
+  'cotTranslation/translate': 'owner-only', // owner chain-of-thought translation UI
+  'cuaAccess/applicationIcons': 'owner-only', // owner computer-use permissions
+  'cuaAccess/applications': 'owner-only', // owner computer-use permissions
+  'cuaAccess/enablePersistentPtc': 'owner-only', // owner computer-use permissions
+  'cuaAccess/openSettings': 'owner-only', // owner computer-use permissions
+  'cuaAccess/ptcConfiguration': 'owner-only', // owner computer-use permissions
+  'cuaAccess/requestPermission': 'owner-only', // owner computer-use permissions
+  'cuaAccess/retryApproval': 'owner-only', // owner computer-use permissions
+  'cuaAccess/revoke': 'owner-only', // owner computer-use permissions
+  'cuaAccess/systemStatus': 'owner-only', // owner computer-use permissions
+  'dynamicCordisRunner/getClientCode': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/inventory': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/invoke': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/reportClientGuardFailure': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/reportRenderFailure': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/resolveInspectQuery': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/resolveRequestRun': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/runHostHalf': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/settleUserRun': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/stopFromPanel': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/syncInspectManifest': 'owner-only', // owner dynamic plugin runner
+  'dynamicCordisRunner/undefineFromPanel': 'owner-only', // owner dynamic plugin runner
+  'sessionFeedback/record': 'owner-only', // owner command feedback
+  'messageFeedback/delete': 'owner-only', // owner message feedback
+  'messageFeedback/list': 'owner-only', // owner message feedback
+  'messageFeedback/put': 'owner-only', // owner message feedback
+  'goals/clear': 'owner-only', // owner clears the goal
+  'goals/complete': 'owner-only', // owner completes the goal
+  'goals/create': 'owner-only', // owner creates a goal
+  'goals/edit': 'owner-only', // owner edits a goal
+  'goals/pause': 'owner-only', // owner pauses a goal
+  'goals/resume': 'owner-only', // owner resumes a goal
+  'pluginInventory/list': 'owner-only', // owner plugin inventory
+  'commands/execute': 'owner-only', // owner executes a slash command
+  'permissionPresets/catalog': 'owner-only', // owner permission presets
+  'userQuestions/answer': 'owner-only', // owner answers a pending question
+  'userQuestions/attachWait': 'owner-only', // owner answers a pending question
+  'llm/discoverModels': 'owner-only', // owner discovers models
+  'agentPresets/list': 'owner-only', // owner agent presets
+  'agentPresets/read': 'owner-only', // owner agent presets
+  'agentPresets/select': 'owner-only', // owner agent presets
+  'schedule/catalog': 'owner-only', // owner schedules
+  'schedule/delete': 'owner-only', // owner schedules
+  'schedule/deleteInactive': 'owner-only', // owner schedules
+  'schedule/history': 'owner-only', // owner schedules
+  'schedule/list': 'owner-only', // owner schedules
+  'schedule/update': 'owner-only', // owner schedules
+  'subagents/interruptByParent': 'owner-only', // owner subagents
+  'subagents/prompt': 'owner-only', // owner subagents
+
+  // Owner share management stays on the owner's own page; a `share-viewer` Peer is refused first.
+  'liveshareShares/audit': 'owner-only',
+  'liveshareShares/capabilities': 'owner-only',
+  'liveshareShares/create': 'owner-only',
+  'liveshareShares/identity': 'owner-only',
+  'liveshareShares/list': 'owner-only',
+  'liveshareShares/relay': 'owner-only',
+  'liveshareShares/setCapabilities': 'owner-only',
+  'liveshareShares/setRelay': 'owner-only',
+  'liveshareShares/stop': 'owner-only',
+  'liveshareShares/testPublish': 'owner-only',
+  'liveshareShares/testRelay': 'owner-only',
+  'liveshareShares/updatePermissions': 'owner-only',
+} as const satisfies Readonly<Record<string, ViewerEndpointClass>>
+
+/**
+ * Session notifications the share policy forwards to a served reader.
+ *
+ * Events are not Remote endpoints, so they are not keys of `VIEWER_ENDPOINT_CLASSES`; the policy roles
+ * list them directly and the Host adds this set to `POLICY_DECIDED_ACTIONS` so a plugin declaration
+ * cannot name one either.
+ */
+export const VIEWER_FORWARDED_EVENTS = [
+  'event:api-session/activity',
+  'event:api-session/added',
+  'event:api-session/error',
+  'event:api-session/removed',
+  'event:api-session/status',
+] as const
+
+/** Whether a class is decided by the share-viewer policy. */
+function isReaderClass(value: ViewerEndpointClass): value is ReaderEndpointClass {
+  return value.startsWith('reader-')
+}
+
+/**
+ * Endpoints the share-viewer policy decides, in table order.
+ * @param classes - Classification table to read.
+ * @returns The keys whose class starts with `reader-`.
+ */
+export function readerPolicyEndpoints<K extends string>(
+  classes: Readonly<Record<K, ViewerEndpointClass>>,
+): K[] {
+  return (Object.keys(classes) as K[]).filter(key => isReaderClass(classes[key]))
+}
+
+/**
+ * Assert two action sets name exactly the same keys, reporting both directions.
+ *
+ * The Host runs this when it derives `POLICY_DECIDED_ACTIONS`, so a classification table that drifts
+ * from the policy roles fails at load instead of silently granting less or more.
+ * @param actual - Keys the caller has.
+ * @param expected - Keys the caller must have.
+ * @param label - Set name for the failure message.
+ * @throws {TypeError} When the sets differ; the message lists missing and unexpected keys.
+ */
+export function assertSameViewerActions(
+  actual: Iterable<string>,
+  expected: Iterable<string>,
+  label: string,
+): void {
+  const actualSet = new Set(actual)
+  const expectedSet = new Set(expected)
+  const missing = [...expectedSet].filter(action => !actualSet.has(action)).sort()
+  const unexpected = [...actualSet].filter(action => !expectedSet.has(action)).sort()
+  if (missing.length === 0 && unexpected.length === 0) return
+  throw new TypeError(
+    `liveshare: ${label} must name exactly the same actions; missing ${JSON.stringify(missing)}; `
+    + `unexpected ${JSON.stringify(unexpected)}`,
+  )
+}
diff --git a/packages/experimental/liveshare/src/fork-lineage.ts b/packages/experimental/liveshare/src/fork-lineage.ts
new file mode 100644
index 0000000000..6ad9ffd2d1
--- /dev/null
+++ b/packages/experimental/liveshare/src/fork-lineage.ts
@@ -0,0 +1,61 @@
+/**
+ * Branch facts the owner host publishes for the branch children of a shared Session.
+ *
+ * These facts are not part of the Session log. Which branches a page may see, and whether each
+ * branch's workspace stays read-only for it, come from the fork registry's record of the reader
+ * that created the branch, so the owner host publishes them per reader on the projection channel
+ * instead of adding fields to the shared Session-summary contract. The `forkLineage` key is
+ * declared here through the merge-extensible projection table; the viewer's read path
+ * (`host/viewer-read.ts`) is the only producer, and a client reads the value back from a session
+ * list row's projection values.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/fork-lineage
+ */
+
+// Loads the projection package's type namespace, which the augmentation below merges into; the
+// `/types` outlet it augments is reached through that package, never through its host runtime.
+import type {} from '@deepseek-ai/dsh-session-projection'
+
+/** Projection key carrying {@link ForkLineage} for one session list row. */
+export const FORK_LINEAGE_KEY = 'forkLineage'
+
+/**
+ * Branch facts one reader was given for one branch of a shared Session.
+ *
+ * Presence of the value is what marks a Session as a branch: a Session the reader was not given
+ * carries no `forkLineage` value at all.
+ */
+export interface ForkLineage {
+  /** How the Session came to exist; only `fork` is published under this key. */
+  readonly origin: 'fork'
+  /** Session the branch was cut from. */
+  readonly sourceSessionId: string
+  /** True when the reader created the branch it is reading. */
+  readonly authoredByViewer: boolean
+  /** True when the branch's workspace stays read-only for its reader. */
+  readonly workspaceReadOnly: boolean
+}
+
+declare module '@deepseek-ai/dsh-session-projection/types' {
+  interface SessionProjectionMap {
+    /** Branch facts one reader was given for a branch of a shared Session. */
+    forkLineage: ForkLineage
+  }
+}
+
+/**
+ * Branch facts a reader was given for the branch cut from one Session.
+ *
+ * A reader reaches a branch only through the share it created it from, so the facts are the same
+ * for every branch it is shown: the reader authored it, and its workspace stays read-only.
+ * @param sourceSessionId - Session the branch was cut from.
+ * @returns The value to publish under {@link FORK_LINEAGE_KEY}.
+ */
+export function forkLineageValue(sourceSessionId: string): ForkLineage {
+  return {
+    origin: 'fork',
+    sourceSessionId,
+    authoredByViewer: true,
+    workspaceReadOnly: true,
+  }
+}
diff --git a/packages/experimental/liveshare/src/host/base64-url.ts b/packages/experimental/liveshare/src/host/base64-url.ts
new file mode 100644
index 0000000000..59ca291900
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/base64-url.ts
@@ -0,0 +1,21 @@
+/**
+ * Unpadded base64url encoding for identifiers and credentials.
+ *
+ * Some execution targets run a Buffer polyfill without the `base64url` encoding
+ * name. Encoding through standard base64 keeps those targets working while the
+ * output stays the RFC 4648 base64url form that Relay records use.
+ * @param value - Bytes to encode.
+ * @returns The unpadded base64url text.
+ */
+export function base64Url(value: Uint8Array): string {
+  return Buffer.from(value).toString('base64').replaceAll('+', '-').replaceAll('/', '_').replace(/=+$/u, '')
+}
+
+/**
+ * Decode unpadded base64url text.
+ * @param text - RFC 4648 base64url text without padding.
+ * @returns The decoded bytes.
+ */
+export function fromBase64Url(text: string): Buffer {
+  return Buffer.from(text.replaceAll('-', '+').replaceAll('_', '/') + '='.repeat((4 - text.length % 4) % 4), 'base64')
+}
diff --git a/packages/experimental/liveshare/src/host/fork-ceiling.ts b/packages/experimental/liveshare/src/host/fork-ceiling.ts
new file mode 100644
index 0000000000..6873fd9f43
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/fork-ceiling.ts
@@ -0,0 +1,73 @@
+/**
+ * What a forked child may actually do, decided per request rather than per session.
+ *
+ * A ceiling that is only a list of settings is not a limit: the child would run with the owner's
+ * tools and only be asked not to use them. This decides each attempted tool use against the installed
+ * ceiling, so the permitted set is what a child can do — read inside the bounded workspace — and
+ * everything that could reach the owner's machine, session, permissions, or another child is refused
+ * by name.
+ */
+
+import type { ForkCeiling } from './fork-policy.ts'
+
+/** One tool use a child is attempting. */
+export interface ForkToolRequest {
+  /** Child session attempting the use. */
+  readonly childSessionId: string
+  /** Session the requesting page holds, which must be that child. */
+  readonly sessionId: string
+  /** Tool name as the harness knows it. */
+  readonly tool: string
+}
+
+/** Stable refusals a child's tool use can receive. */
+export type ForkToolRefusal =
+  | 'fork-ceiling-uninstalled'
+  | 'fork-tool-not-permitted'
+  | 'fork-child-mismatch'
+  /** A path argument leaves the workspace this child was granted. */
+  | 'fork-path-outside-workspace'
+  /** The tool's paths could not be established, so nothing could be authorized. */
+  | 'fork-paths-unknown'
+
+/** Outcome of one tool-use decision. */
+export type ForkToolDecision =
+  | { readonly ok: true }
+  | { readonly ok: false; readonly code: ForkToolRefusal; readonly message: string }
+
+/**
+ * Decide one tool use by a forked child.
+ * @param ceiling Ceiling installed on this host, or undefined when none is.
+ * @param request The attempted use.
+ * @returns Allowed, or the named reason it is refused.
+ */
+export function forkToolDecision(
+  ceiling: ForkCeiling | undefined,
+  request: ForkToolRequest,
+): ForkToolDecision {
+  if (ceiling === undefined) {
+    return {
+      ok: false,
+      code: 'fork-ceiling-uninstalled',
+      message: 'read-only execution limits are not installed on this host',
+    }
+  }
+  // The page may only use the tools of the child it holds: one child reaching into another, or into
+  // the source session, is the crossing this refuses.
+  if (request.sessionId !== request.childSessionId) {
+    return {
+      ok: false,
+      code: 'fork-child-mismatch',
+      message: 'this session is not the fork this tool use came from',
+    }
+  }
+  if (!ceiling.allowedTools.includes(request.tool)
+    || ceiling.deniedCapabilities.includes(request.tool)) {
+    return {
+      ok: false,
+      code: 'fork-tool-not-permitted',
+      message: `a fork may not use ${request.tool}`,
+    }
+  }
+  return { ok: true }
+}
diff --git a/packages/experimental/liveshare/src/host/fork-enforcement.ts b/packages/experimental/liveshare/src/host/fork-enforcement.ts
new file mode 100644
index 0000000000..a9d4f36e06
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/fork-enforcement.ts
@@ -0,0 +1,975 @@
+/**
+ * The host's real enforcement wiring for one forked child.
+ *
+ * Three parts must land before a child counts as enforced: a producer on the child's own scoped
+ * runtime that resolves each execution's paths through the host's filesystem and records the verdict
+ * for that exact execution, the monotonic guard that refuses whatever the verdict did not confirm,
+ * and the fork-scoped replacements that check a resolved target against the granted root and delegate
+ * with that target's canonical path.
+ *
+ * The child's authorized root is the workspace its own session was granted, never the owner's
+ * deployment default. Containment is checked on the resolved path before the deployment's tool or the
+ * backend opens it again by path, so a symlink swapped in between can redirect the operation; the
+ * write still passes the backend's own sandbox policy. Kernel-grade isolation of untrusted code remains
+ * `ctx.shell`'s job.
+ */
+
+import type { Context } from '@deepseek-ai/cordis'
+import type { Agent } from '@deepseek-ai/dsh-agent'
+import type {
+  FsEditOutcome,
+  FsEditRequest,
+  FsTarget,
+  FsVersion,
+  FsWriteOutcome,
+  FsWriteIntent,
+} from '@deepseek-ai/dsh-fs'
+import type { PreToolDecision, ToolDefinition, ToolExecution } from '@deepseek-ai/dsh-tools'
+import type { Session } from '@deepseek-ai/dsh-session'
+import type { SandboxExecutionPolicy } from '@deepseek-ai/dsh-sandbox'
+import { scopeOf } from '@deepseek-ai/dsh-scope'
+import { forkToolGuard, installChildEnforcement, type ForkToolExecution } from './fork-tool-guard.ts'
+import { READ_ONLY_FORK_CEILING, WRITE_FORK_CEILING } from './fork-policy.ts'
+import type { ForkRegistry } from './fork-registry.ts'
+import {
+  SHARED_TOOL_PROFILES,
+  sharedEditArguments,
+  withDefaultSearchRoot,
+  type SharedToolProfile,
+} from './shared-tools.ts'
+import { isRecord } from './wire-json.ts'
+
+/** Name of the read tool whose fork-scoped replacement this host installs. */
+const FORK_READ_TOOL = 'read'
+
+/** Name of the write tool whose fork-scoped replacement this host installs for a write-capable scope. */
+const FORK_WRITE_TOOL = 'write'
+
+/** Name of the edit tool whose fork-scoped replacement this host installs for a write-capable scope. */
+const FORK_EDIT_TOOL = 'edit'
+
+/** Why a source Session carries no usable confined layer. */
+export type SourceSessionAccessRefusal =
+  /** The deployment exposes no tool definition to replace. */
+  | 'tool-unavailable'
+  /** The replacement could not be registered in the Session's scope. */
+  | 'register-refused'
+
+/** A confined tool whose registration a scope refused, with the error that scope raised. */
+export interface ForkToolRegistrationFailure {
+  /** Name of the tool whose confined replacement could not register. */
+  readonly tool: string
+  /** Error the scope raised, preserved so the caller's own refusal can state it. */
+  readonly error: unknown
+}
+
+/** What installing the source-session access layer achieved. */
+export interface SourceSessionAccessInstallation {
+  /** Release the guard, and every replacement this installation registered. */
+  dispose(): void
+  /**
+   * Whether this installation confines the Session's view surface inside the granted workspace.
+   *
+   * The read replacement is the anchor: its absence means nothing usable was installed, a viewer-started
+   * turn is refused every tool while this layer is mounted, and a caller must not report the share as
+   * drivable or drive the prompt. Read-only tools the deployment does not ship stay unavailable without
+   * clearing this flag.
+   */
+  readonly readConfined: boolean
+  /** Whether this installation can enforce a bounded write through the backend. */
+  readonly writeConfined: boolean
+  /** Why the layer is unusable, set only when {@link readConfined} is false. */
+  readonly refusal?: SourceSessionAccessRefusal
+  /**
+   * The confined replacement a scope refused, when one registration failed.
+   *
+   * Fail-closed installation returns a narrower layer instead of throwing; this keeps the error the scope
+   * raised so the host can report it rather than losing the reason.
+   */
+  readonly registrationFailure?: ForkToolRegistrationFailure
+}
+
+/** The Session whose access this is, and everything the wrapper needs to judge one execution. */
+export interface SourceSessionAccess {
+  /** Session whose tool executions are constrained, for messages and audit. */
+  readonly sessionId: string
+  /** That Session's own scope, which the replacements are registered into. */
+  readonly context: Context
+  readonly scope: object
+  /** Workspace this Session's tool executions may read and write inside. */
+  readonly grantedRoot: FsTarget
+  readonly cwd: string
+  /** Resolve this Session's complete current policy after write-intent listeners settle. */
+  readonly resolvePolicy: () => SandboxExecutionPolicy
+  readonly fs: ForkEnforcementFs
+  readonly tools: ForkToolRegistry
+  readonly describe: (execution: ForkToolExecution) => ForkToolPaths
+  /**
+   * Present when this installation registers the bounded write, absent when the Session is read-only.
+   *
+   * A Session shared only at the view tier installs no write replacement, so the guard refuses the name.
+   * A Session some share may write installs one, and the field beside it answers whether writing is still
+   * allowed: the tier of the Session's shares can narrow while the layer stays mounted.
+   */
+  readonly write?: {
+    /** Whether the Session's current shares still allow writing it. */
+    readonly mayWrite: () => boolean
+  }
+  /** Refresh the Session's Relay grants before an operation that consumes its filesystem capability. */
+  readonly refreshAuthorization?: () => Promise<void>
+  /**
+   * Whether one execution belongs to a turn whose entering input named a share viewer.
+   *
+   * The layer belongs to the Session, but it confines only the turns a viewer started: a turn the owner
+   * started keeps the deployment's own tools, including its own path resolution, so the answer is read
+   * for every execution while the layer stays mounted. Absent means every execution is confined, which
+   * keeps a host that cannot attribute turns from widening one.
+   */
+  readonly confinedExecution?: (execution: ForkToolExecution) => boolean
+}
+
+/**
+ * Confine every viewer-started turn of one shared Session to its granted workspace.
+ *
+ * The replacements are registered in the Session's scope, and while a viewer-started turn runs, the guard
+ * on that scope permits nothing else: that turn reads through the confined replacements, and where the
+ * Session's shares allow writing it writes through the bounded ones. The owner's own turns ask the same
+ * guard but keep the deployment's tools, so the share never narrows the work the owner started. Every
+ * path a permitted viewer turn declares is resolved and checked against the granted root before the
+ * deployment's body receives its canonical form, and each call re-reads the shares' current Relay grants,
+ * so a share that narrows or ends stops its own writes without the layer being reinstalled. A tool the
+ * shared surface does not name, or one whose replacement could not register, is refused to that turn.
+ * Stopping the layer is what restores the Session's own tools, which the host does when no share remains.
+ * @param target - The Session, its granted workspace, and the authority that answers per operation.
+ * @returns The installation: its disposer, and whether reads and writes can actually be confined here.
+ */
+export function installSourceSessionAccess(target: SourceSessionAccess): SourceSessionAccessInstallation {
+  const { context, fs } = target
+  const confined = target.confinedExecution ?? (() => true)
+  const disposers: (() => void)[] = []
+  /**
+   * Names this installation registered, which its guard vouches for.
+   *
+   * A name the deployment registers is not evidence that the constrained definition is the one that would
+   * run, so the guard permits only what this installation put in the Session's scope itself.
+   */
+  const installed = new Set<string>()
+  /**
+   * Deployment definitions this installation vouches for without replacing them.
+   *
+   * A tool with no local file effect needs no replacement, and replacing it would change a definition
+   * other plugins recognize by identity — the skill catalog publishes only while its own `skill`
+   * definition is the visible one. The guard therefore accepts the definition visible when the layer was
+   * installed, and refuses the name once a different definition answers to it.
+   */
+  const passthrough = new Map<string, ToolDefinition>()
+  let refusal: SourceSessionAccessRefusal | undefined
+  let registrationFailure: ForkToolRegistrationFailure | undefined
+
+  /** The definition this Session would run without this layer, wherever the deployment registered it. */
+  const deploymentOf = (name: string): ToolDefinition | undefined =>
+    context.tools.get(name, target.scope) ?? target.tools.get(name)
+
+  // Without the deployment's read the layer has no anchor: the guard below permits a viewer-started turn
+  // nothing it did not register, so that turn is refused rather than served by the owner's own tools.
+  if (deploymentOf(FORK_READ_TOOL) === undefined) refusal = 'tool-unavailable'
+
+  /**
+   * Resolve one call's path and refuse it unless the granted root contains the result.
+   * @param path - Path the call names.
+   * @param operation - Operation the refusal names.
+   * @param signal - Cancellation of the call being served.
+   * @returns The canonical path a subprocess in this filesystem's world opens for that target.
+   */
+  const resolveGranted = async (
+    path: string,
+    operation: 'read' | 'write',
+    signal: AbortSignal,
+  ): Promise<string> => {
+    const candidate = await fs.resolve(path, { cwd: target.cwd, signal })
+    assertGranted(fs, target.grantedRoot, candidate, operation)
+    return fs.processPath(candidate)
+  }
+
+  /**
+   * Register one confined replacement and record the name this installation now vouches for.
+   * @param name - Tool name the guard keys on.
+   * @param deployment - The definition being replaced.
+   * @param execute - Body that checks this call's paths and delegates with their canonical form.
+   * @returns Whether the replacement registered.
+   */
+  const register = (name: string, deployment: ToolDefinition, execute: ToolDefinition['execute']): boolean => {
+    try {
+      disposers.push(context.tools.register({ ...deployment, execute }))
+      installed.add(name)
+      return true
+    } catch (error: unknown) {
+      // The guard is still installed: a name this host could not register is refused rather than served
+      // by the deployment's own definition.
+      registrationFailure ??= { tool: name, error }
+      if (name === FORK_READ_TOOL) refusal = 'register-refused'
+      return false
+    }
+  }
+
+  /**
+   * Install the confined replacement for one admitted tool.
+   *
+   * Every path the tool's own arguments declare is resolved and checked before the deployment's body
+   * sees it, and that body is handed the canonical form so it opens exactly what was checked. A call
+   * whose declared paths cannot be read is refused rather than delegated unchecked arguments.
+   * @param profile - The tool's shared-surface entry.
+   */
+  const installShared = (profile: SharedToolProfile): void => {
+    const deployment = deploymentOf(profile.name)
+    // Nothing to replace: the guard below permits only registered names, so the tool stays refused.
+    if (deployment === undefined) return
+    if (profile.noFileEffect) {
+      passthrough.set(profile.name, deployment)
+      return
+    }
+    register(profile.name, deployment, async (args, exec) => {
+      // An owner-started turn keeps the deployment's own tool, including its own path resolution: this
+      // layer only bounds what a viewer's turn runs.
+      if (!confined(exec)) return await deployment.execute(args, exec)
+      await target.refreshAuthorization?.()
+      const input = isRecord(args) ? args : {}
+      const call = profile.call(input)
+      if (call === undefined) {
+        throw new Error(`a shared session may only use ${profile.name} with the paths it declares`)
+      }
+      // A pathless search reads the workspace default, so its replacement supplies the working directory
+      // as the root it checks and hands to the tool.
+      const named = call.paths.length === 0 && profile.defaultsToWorkspace ? [target.cwd] : call.paths
+      const canonical: string[] = []
+      for (const path of named) {
+        canonical.push(await resolveGranted(path, 'read', exec.signal))
+      }
+      return await deployment.execute(call.rewrite(canonical), exec)
+    })
+  }
+
+  for (const profile of SHARED_TOOL_PROFILES) {
+    if (profile.tier === 'view') installShared(profile)
+  }
+
+  const writeGate = target.write
+  const deploymentWrite = writeGate === undefined ? undefined : deploymentOf(FORK_WRITE_TOOL)
+  if (deploymentWrite !== undefined && writeGate !== undefined) {
+    const gate = writeGate
+    register(FORK_WRITE_TOOL, deploymentWrite, async (args, exec) => {
+      if (!confined(exec)) return await deploymentWrite.execute(args, exec)
+      await target.refreshAuthorization?.()
+      // The Session's current shares decide, not the tier the layer was installed for: a share can
+      // narrow to view while this layer stays mounted.
+      if (!gate.mayWrite()) throw new Error('this share does not allow writing this Session')
+      const input = isRecord(args) ? args : {}
+      const requested = input.file_path
+      const content = input.content
+      if (typeof requested !== 'string' || requested === '' || typeof content !== 'string') {
+        throw new Error('a shared session may only write a named file with text content')
+      }
+      const candidate = await fs.resolve(requested, { cwd: target.cwd, signal: exec.signal })
+      assertGranted(fs, target.grantedRoot, candidate, 'write')
+      // The intent comes from the same waterfall the shipped write uses, so a deployment's observation
+      // policy — a read-before-write rule, a stale-version rule — keeps deciding here too. This path
+      // never substitutes a version it just read for the one the caller observed.
+      const intent = await context.waterfall('fs/write-intent', candidate, exec, () => undefined)
+      await target.refreshAuthorization?.()
+      const policy = target.resolvePolicy()
+      // The shares can narrow while the intent awaited: the final refresh above reads the new state, so
+      // ask the gate again before anything is written instead of trusting the earlier verdict.
+      if (!gate.mayWrite()) throw new Error('this share does not allow writing this Session')
+      const outcome = await fs.writeText(candidate, content, intent, exec.signal, policy)
+      // The published version is this caller's own next basis, exactly as the shipped write records it:
+      // without it a second write of the same file would meet a policy that saw nothing since the read.
+      context.emit('fs/observed', candidate, { kind: 'present', version: outcome.version }, exec)
+      return {
+        path: requested,
+        operation: outcome.operation,
+        before: outcome.before ?? null,
+        after: outcome.after,
+      }
+    })
+  }
+
+  const deploymentEdit = writeGate === undefined ? undefined : deploymentOf(FORK_EDIT_TOOL)
+  if (deploymentEdit !== undefined && writeGate !== undefined) {
+    const gate = writeGate
+    register(FORK_EDIT_TOOL, deploymentEdit, async (args, exec) => {
+      if (!confined(exec)) return await deploymentEdit.execute(args, exec)
+      await target.refreshAuthorization?.()
+      if (!gate.mayWrite()) throw new Error('this share does not allow writing this Session')
+      const edit = sharedEditArguments(args)
+      if (edit === undefined) {
+        throw new Error('a shared session may only edit a named file by replacing non-empty text')
+      }
+      const candidate = await fs.resolve(edit.filePath, { cwd: target.cwd, signal: exec.signal })
+      assertGranted(fs, target.grantedRoot, candidate, 'write')
+      // The edit intent comes from the same waterfall the shipped edit uses, so the deployment's
+      // read-before-write rule keeps deciding here too.
+      const intent = await context.waterfall('fs/edit-intent', candidate, exec, () => undefined)
+      await target.refreshAuthorization?.()
+      const policy = target.resolvePolicy()
+      if (!gate.mayWrite()) throw new Error('this share does not allow writing this Session')
+      const outcome = await fs.editText(
+        candidate,
+        { oldString: edit.oldString, newString: edit.newString, replaceAll: edit.replaceAll },
+        intent,
+        exec.signal,
+        policy,
+      )
+      context.emit('fs/observed', candidate, { kind: 'present', version: outcome.version }, exec)
+      return { path: fs.processPath(candidate), before: outcome.before, after: outcome.after }
+    })
+  }
+
+  // This layer speaks for viewer-started turns only: the owner's own turns keep every deployment tool.
+  // A viewer-started turn may run nothing but this installation's replacements, because the sandbox
+  // belongs to the turn the viewer drives.
+  const guard = context.tools.guard((execution) => {
+    if (!confined(execution)) return undefined
+    if (installed.has(execution.name)) return undefined
+    // A no-effect tool keeps the deployment's own definition, which this installation vouches for by
+    // identity. A name answering to a different definition — a scope-registered shadow — is refused.
+    const deployment = passthrough.get(execution.name)
+    if (deployment !== undefined && deploymentOf(execution.name) === deployment) return undefined
+    return `a shared session may not use ${execution.name}`
+  })
+  disposers.push(guard)
+  return {
+    dispose: () => {
+      for (const dispose of [...disposers].reverse()) dispose()
+    },
+    readConfined: installed.has(FORK_READ_TOOL),
+    writeConfined: installed.has(FORK_WRITE_TOOL),
+    ...(installed.has(FORK_READ_TOOL) || refusal === undefined ? {} : { refusal }),
+    ...(registrationFailure === undefined ? {} : { registrationFailure }),
+  }
+}
+
+/**
+ * Live agent the registry publishes: the agent loop's own handle carries the scope it registered
+ * into and the session whose workspace it was granted.
+ */
+interface LiveAgent extends Agent {
+  readonly ctx: Context
+  readonly session: Session
+}
+
+/** Path resolution and text writes as the filesystem capability exposes them. */
+export interface ForkEnforcementFs {
+  readonly resolve: (
+    path: string,
+    options?: { readonly cwd?: string; readonly signal?: AbortSignal },
+  ) => Promise<FsTarget>
+  readonly contains: (parent: FsTarget, child: FsTarget) => boolean
+  /**
+   * The canonical path a subprocess in this filesystem's world opens for a target.
+   *
+   * Delegating with this value hands the deployment's tool the path this host just checked instead of
+   * the model's own spelling.
+   */
+  readonly processPath: (target: FsTarget) => string
+  /**
+   * Write text to one resolved target under the Session's complete policy.
+   *
+   * `expected` carries the caller's intent — a version to replace, or a requirement that the file is
+   * absent — so the deployment's guarded-write semantics hold. `sandboxPolicy` is resolved after the
+   * Session's write-intent listeners settle; a sandboxing backend fences the write by it.
+   */
+  readonly writeText: (
+    target: FsTarget,
+    content: string,
+    expected?: FsWriteIntent,
+    signal?: AbortSignal,
+    sandboxPolicy?: SandboxExecutionPolicy,
+  ) => Promise<FsWriteOutcome>
+  /**
+   * Edit one resolved target literally under the Session's complete policy.
+   *
+   * `expected` carries the caller's edit intent — the version the caller observed — so the deployment's
+   * guarded-edit semantics hold. `sandboxPolicy` is resolved after the Session's edit-intent listeners
+   * settle; a sandboxing backend fences the edit by it.
+   */
+  readonly editText: (
+    target: FsTarget,
+    edit: FsEditRequest,
+    expected?: { readonly version: FsVersion },
+    signal?: AbortSignal,
+    sandboxPolicy?: SandboxExecutionPolicy,
+  ) => Promise<FsEditOutcome>
+}
+
+/** A refusal of a target outside the granted workspace; callers identify it by `code` alone. */
+type GrantedRootRefusal = Error & { readonly code: 'FS_SANDBOX_DENIED' }
+
+/**
+ * Build the refusal of a target outside the granted workspace.
+ * @param message - What was refused and why.
+ * @returns An `Error` carrying the `FS_SANDBOX_DENIED` code.
+ */
+function grantedRootRefusal(message: string): GrantedRootRefusal {
+  return Object.assign(new Error(message), { code: 'FS_SANDBOX_DENIED' as const })
+}
+
+/**
+ * Refuse a resolved target that the granted root does not contain.
+ * @param fs - Filesystem whose containment rule decides.
+ * @param root - The granted workspace root.
+ * @param candidate - The resolved target one call names.
+ * @param operation - The operation named in the refusal.
+ * @throws GrantedRootRefusal when the granted root does not contain `candidate`.
+ */
+function assertGranted(fs: ForkEnforcementFs, root: FsTarget, candidate: FsTarget, operation: 'read' | 'write'): void {
+  if (fs.contains(root, candidate)) return
+  throw grantedRootRefusal(
+    `cannot ${operation} "${candidate.displayPath}": it is not inside the workspace this session was granted`,
+  )
+}
+
+/** The tool registry's definition lookup, as the tool runtime exposes it. */
+export interface ForkToolRegistry {
+  readonly get: (name: string, scope?: object) => ToolDefinition | undefined
+}
+
+/** Agent registry view: the child's live handle carries the scope and session it was composed with. */
+interface AgentLookup {
+  readonly get: (id: string) => LiveAgent | undefined
+}
+
+/** Sandbox policy view, which resolves the workspace a session was granted. */
+interface WorkspacePolicy {
+  readonly resolve: (request: { readonly session?: Session }) => SandboxExecutionPolicy
+}
+
+/** Paths one tool's own arguments name, or undefined when they cannot be established. */
+export interface ForkToolPaths {
+  readonly paths: readonly string[] | undefined
+  readonly noFileEffect: boolean
+}
+
+/** Everything one child's limit is installed from, once the host has resolved its own services. */
+export interface ForkEnforcementTarget {
+  readonly childSessionId: string
+  /** The child's own scoped context, which the guard and the verdict producer register into. */
+  readonly childContext: Context
+  /**
+   * The child's own scope key.
+   *
+   * A guard registered from an unscoped context would apply to every agent in the process, so the
+   * host derives this from the child's context and refuses to install without one.
+   */
+  readonly childScope: object
+  /**
+   * Canonical root of the workspace this child was granted, resolved once when the limit was
+   * installed.
+   *
+   * Resolving it again per read would re-derive the grant from a path that may point elsewhere by
+   * then, so the limit carries the root it was installed with.
+   */
+  readonly grantedRoot: FsTarget
+  /** Working directory the child's relative paths resolve against. */
+  readonly cwd: string
+  /** Resolve this Session's complete current policy after write-intent listeners settle. */
+  readonly resolvePolicy: () => SandboxExecutionPolicy
+  readonly fs: ForkEnforcementFs
+  /** The deployment's own tool registry, which decides whether a name is trusted. */
+  readonly tools: ForkToolRegistry
+  readonly forks: ForkRegistry
+  readonly describe: (execution: ForkToolExecution) => ForkToolPaths
+  /** Whether this scope may also write, through a `write` tool this host installs itself. */
+  readonly write?: boolean
+  /** Re-check the share's current grant immediately before each tool execution. */
+  readonly authorized?: (tool: string) => boolean
+  /** Refresh the child's current Relay grant before consuming its filesystem capability. */
+  readonly refreshAuthorized?: () => Promise<void>
+}
+
+/** Host services and arguments one host-side installation reads. */
+export interface ForkEnforcementHost {
+  readonly forks: ForkRegistry
+  readonly describe: (execution: ForkToolExecution) => ForkToolPaths
+  /**
+   * Whether the share this child serves may write, which puts this host's bounded write in the child's
+   * scope.
+   *
+   * Read from the owner's published share rather than from configuration: a child must never install a
+   * wider ceiling than the share its viewer was admitted to, and absent means reading only.
+   */
+  readonly write?: boolean
+  /** Re-check the share's current grant immediately before each tool execution. */
+  readonly authorized?: (tool: string) => boolean
+  /** Refresh the child's current Relay grant before consuming its filesystem capability. */
+  readonly refreshAuthorized?: () => Promise<void>
+}
+
+/**
+ * What one installation could not do, for a caller that states the refusal itself.
+ *
+ * Installation stays fail-closed: a replacement that cannot register returns undefined rather than
+ * throwing, so a child is never published under a ceiling this host did not install. The error the scope
+ * raised is kept here because the caller's own refusal is the only place it can be reported.
+ */
+export interface ForkEnforcementFailure {
+  /** The confined tool whose registration the child's scope refused. */
+  registration?: ForkToolRegistrationFailure
+}
+
+/**
+ * Read one service, or undefined when this deployment does not provide it.
+ * @param ctx Host context to read from.
+ * @param name Service name.
+ * @returns The service as an untyped handle, or undefined.
+ */
+function serviceOf(ctx: Context, name: string): unknown {
+  // `get` reports absence; the typed `ctx.<service>` accessor would treat a profile without
+  // the capability as a programming error instead.
+  return ctx.get(name)
+}
+
+/**
+ * Read one caught value's message for a refusal this host reports.
+ * @param error - Value a dependency threw.
+ * @returns The error's message, or the value's own string form.
+ */
+function messageOf(error: unknown): string {
+  return error instanceof Error ? error.message : String(error)
+}
+
+/** Optional Session observation the child preflight reads; absent leaves the child to activation. */
+interface SessionObservationLookup {
+  readonly observeSession?: (sessionId: string) => Promise<{ readonly header: { readonly cwd?: string } } & Disposable>
+}
+
+/**
+ * Prove one recorded child's limit can be installed before its agent is published.
+ *
+ * A resumed child is announced through `agent/created` before its limit installs, so an installability
+ * failure would leave a created Session whose guard never landed. Reading the stored header and resolving
+ * the workspace it names happens before activation, so the child is never announced when the limit cannot
+ * land. A Session whose header cannot be read fails here as well: this host cannot prove the limit
+ * installs, and the caller refuses the child instead of activating one it could not confine. A
+ * composition without a session query leaves the child to activation, because there is no header to read.
+ * @param ctx - Host context carrying the session query and filesystem.
+ * @param childSessionId - Recorded fork child to preflight.
+ * @returns Nothing when the child's granted workspace resolves.
+ * @throws when the child's Session cannot be read, states no workspace, or its workspace cannot be
+ *   resolved.
+ */
+export async function preflightForkChild(ctx: Context, childSessionId: string): Promise<void> {
+  const query = ctx.get('sessionQuery') as SessionObservationLookup | undefined
+  const fs = serviceOf(ctx, 'fs') as ForkEnforcementFs | undefined
+  if (query?.observeSession === undefined || fs === undefined) return
+  let cwd: string | undefined
+  try {
+    using observed = await query.observeSession(childSessionId)
+    cwd = observed.header.cwd
+  } catch (error: unknown) {
+    throw new Error(`fork ${childSessionId} preflight failed: ${messageOf(error)}`, { cause: error })
+  }
+  if (cwd === undefined) {
+    throw new Error(`fork ${childSessionId} has no workspace to confine`)
+  }
+  try {
+    await fs.resolve(cwd)
+  } catch (error: unknown) {
+    throw new Error(`fork ${childSessionId} cannot be confined: its workspace does not resolve`, { cause: error })
+  }
+}
+
+/**
+ * Install one child's limit against the host's own services.
+ *
+ * Every dependency is checked before anything registers: the record this writes is what opens the
+ * child's prompt gate, so a host missing its agent registry, filesystem, sandbox policy, or live child
+ * must leave that child refused rather than report a limit nothing applies.
+ * @param ctx Host context that provides the agent registry, filesystem, sandbox policy, and tools.
+ * @param childSessionId Child that was just forked.
+ * @param host The host's fork registry and argument reader.
+ * @param failure Receives the error a refused registration raised, so the caller can state it.
+ * @returns The disposer that releases this child's limit, or undefined when nothing was installed.
+ */
+export async function installHostForkEnforcement(
+  ctx: Context,
+  childSessionId: string,
+  host: ForkEnforcementHost,
+  failure: ForkEnforcementFailure = {},
+): Promise<(() => void) | undefined> {
+  const agents = serviceOf(ctx, 'agents') as AgentLookup | undefined
+  if (agents === undefined) return undefined
+  const live = agents.get(childSessionId)
+  if (live === undefined) return undefined
+  // The installer's live child carries its own scope and session, so this entry installs exactly what the
+  // prepublish entry would have installed for the same child.
+  return await installForkEnforcementForAgent(ctx, childSessionId, live.ctx, live.session, host, failure)
+}
+
+/**
+ * Install one child's limit from the scope the factory hands its setup.
+ *
+ * A resumed agent is unpublished while its setup runs, so the registry cannot find it yet: the caller
+ * passes that setup's own context and session instead of publishing first to make a lookup succeed.
+ * @param ctx Host context that provides the filesystem, sandbox policy, and tools.
+ * @param childSessionId Child this scope belongs to.
+ * @param childContext The unpublished child's own scope.
+ * @param session The child's session, whose granted workspace the limit is confined to.
+ * @param host The host's fork registry and argument reader.
+ * @param failure Receives the error a refused registration raised, so the caller can state it.
+ * @returns The disposer that releases this child's limit, or undefined when nothing was installed.
+ */
+export async function installForkEnforcementForAgent(
+  ctx: Context,
+  childSessionId: string,
+  childContext: Context,
+  session: Session,
+  host: ForkEnforcementHost,
+  failure: ForkEnforcementFailure = {},
+): Promise<(() => void) | undefined> {
+  return await installForThisAgent(ctx, childSessionId, childContext, session, host, failure)
+}
+
+/** The installation itself. */
+async function installForThisAgent(
+  ctx: Context,
+  childSessionId: string,
+  childContext: Context,
+  session: Session,
+  host: ForkEnforcementHost,
+  failure: ForkEnforcementFailure,
+): Promise<(() => void) | undefined> {
+  const fs = serviceOf(ctx, 'fs') as ForkEnforcementFs | undefined
+  const sandboxPolicy = serviceOf(ctx, 'sandboxPolicy') as WorkspacePolicy | undefined
+  const tools = serviceOf(ctx, 'tools') as ForkToolRegistry | undefined
+  if (fs === undefined || sandboxPolicy === undefined || tools === undefined) return undefined
+  const childScope = scopeOf(childContext)
+  // A child context without a scope would take the guard globally and limit the owner's own tool use
+  // too, so its absence is a refusal rather than a reason to register anyway.
+  if (childScope === undefined) return undefined
+  const cwd = session.header.cwd
+  // Without the child's own working directory a relative path could not be resolved against the
+  // granted root, and a limit that cannot resolve paths does not exist.
+  if (cwd === undefined) return undefined
+  const dispose = installForkEnforcement({
+    childSessionId,
+    childContext,
+    childScope,
+    // The granted root is the child's own session workspace, resolved by the deployment's policy: the
+    // owner's fallback root is what a session without a cwd would get, not what was shared.
+    grantedRoot: await fs.resolve(sandboxPolicy.resolve({ session }).workspaceRoot),
+    resolvePolicy: () => sandboxPolicy.resolve({ session }),
+    cwd,
+    fs,
+    tools,
+    forks: host.forks,
+    describe: host.describe,
+    // The share's own answer, forwarded rather than re-derived: the child's ceiling is what the owner
+    // published for the share whose viewer asked for this fork.
+    ...(host.write === true ? { write: true } : {}),
+    ...(host.authorized === undefined ? {} : { authorized: host.authorized }),
+    ...(host.refreshAuthorized === undefined ? {} : { refreshAuthorized: host.refreshAuthorized }),
+  }, failure)
+  // An installation that returned nothing leaves the child's prompt gate refused; the caller says so.
+  if (dispose === undefined) return undefined
+  return dispose
+}
+
+/**
+ * Install one child's limit and register the parts that make it real.
+ * @param target The child's own context and every resolved capability the limit needs.
+ * @param failure Receives the error a refused registration raised, for the caller's refusal.
+ * @returns The disposer that releases the limit, or undefined when nothing was installed.
+ */
+export function installForkEnforcement(
+  target: ForkEnforcementTarget,
+  failure: ForkEnforcementFailure = {},
+): (() => void) | undefined {
+  const { childContext, childScope, fs, forks } = target
+  const requireAuthorized = (tool: string): void => {
+    if (!forks.enforcementInstalled(target.childSessionId) || target.authorized?.(tool) === false) {
+      throw new Error('this fork no longer holds permission for this tool')
+    }
+  }
+  /**
+   * Names this host installed into the child's scope, which its guard vouches for.
+   *
+   * A name is not evidence that the constrained definition is the one that would run: the guard permits
+   * only what this installation registered, so a definition that failed to register stays refused.
+   */
+  const vouchedNames = new Set<string>()
+  /**
+   * Deployment definitions this installation vouches for without replacing them.
+   *
+   * A tool with no local file effect needs no replacement, and replacing it would change a definition
+   * other plugins recognize by identity — the skill catalog publishes only while its own `skill`
+   * definition is the visible one. The guard accepts the definition visible when the limit was installed,
+   * and refuses the name once a different definition answers to it.
+   */
+  const passthrough = new Map<string, ToolDefinition>()
+  /** Releases every replacement registered so far; used to unwind an installation that cannot finish. */
+  const installedDisposers: (() => void)[] = []
+  /**
+   * The definition the child would run if this host installed nothing.
+   *
+   * A deployment registers its filesystem tools wherever its composition puts them — process-global on
+   * a bare deployment, or in a preset/ancestor scope on a product profile — so the child's own view is
+   * what the confined replacement must shadow. The child's scope cannot already hold this name: a
+   * child-local registration of it would have been a different tool, and this host would refuse.
+   */
+  const deploymentOf = (name: string): ToolDefinition | undefined =>
+    childContext.tools.get(name, childScope) ?? target.tools.get(name)
+  /**
+   * Register one confined replacement and record the name this installation now vouches for.
+   * @param name - Tool name the guard keys on.
+   * @param deployment - The definition being replaced.
+   * @param execute - Body that checks this call's paths and delegates with their canonical form.
+   * @returns A release for the replacement, or undefined when it could not register.
+   */
+  const register = (
+    name: string,
+    deployment: ToolDefinition,
+    execute: ToolDefinition['execute'],
+  ): (() => void) | undefined => {
+    try {
+      const dispose = childContext.tools.register({ ...deployment, execute })
+      vouchedNames.add(name)
+      const release = (): void => {
+        vouchedNames.delete(name)
+        dispose()
+      }
+      installedDisposers.push(release)
+      return release
+    } catch (error: unknown) {
+      // The child's scope already registers this name, or the runtime refused the registration. This
+      // host cannot confine the name then, and vouching for a definition that never registered would
+      // hand the child the deployment's unconfined tool under a trusted name.
+      failure.registration ??= { tool: name, error }
+      return undefined
+    }
+  }
+  /**
+   * Register one admitted read-surface tool's confined replacement.
+   *
+   * Registering it here rather than checking the model's path later makes the call authorized against
+   * the granted root by the code that delegates it, with the canonical path that check approved.
+   * @param profile - The tool's shared-surface entry.
+   * @returns A release for the replacement, or undefined when the deployment has no such tool or the
+   *   scope refused it.
+   */
+  const confineShared = (profile: SharedToolProfile): (() => void) | undefined => {
+    const deployment = deploymentOf(profile.name)
+    // Nothing to replace: the guard permits only registered names, so the tool stays refused.
+    if (deployment === undefined) return undefined
+    if (profile.noFileEffect) {
+      passthrough.set(profile.name, deployment)
+      return undefined
+    }
+    return register(profile.name, deployment, async (args, exec) => {
+      await target.refreshAuthorized?.()
+      requireAuthorized(profile.name)
+      const input = isRecord(args) ? args : {}
+      const call = profile.call(input)
+      if (call === undefined) {
+        throw new Error(`a fork may only use ${profile.name} with the paths it declares`)
+      }
+      // A pathless search reads the workspace default, so its replacement supplies the working directory
+      // as the root it checks and hands to the tool.
+      const named = call.paths.length === 0 && profile.defaultsToWorkspace ? [target.cwd] : call.paths
+      const canonical: string[] = []
+      for (const path of named) {
+        const candidate = await fs.resolve(path, { cwd: target.cwd, signal: exec.signal })
+        if (!fs.contains(target.grantedRoot, candidate)) {
+          throw new Error('a fork may only read inside the workspace it was granted')
+        }
+        canonical.push(fs.processPath(candidate))
+      }
+      requireAuthorized(profile.name)
+      return await deployment.execute(call.rewrite(canonical), exec)
+    })
+  }
+  let readReplacement: (() => void) | undefined
+  for (const profile of SHARED_TOOL_PROFILES) {
+    if (profile.tier !== 'view') continue
+    const release = confineShared(profile)
+    if (profile.name === FORK_READ_TOOL) readReplacement = release
+  }
+  // A deployment that ships the read tool must have its confined replacement in place for this child.
+  if (deploymentOf(FORK_READ_TOOL) !== undefined && readReplacement === undefined) {
+    for (const dispose of [...installedDisposers].reverse()) dispose()
+    return undefined
+  }
+  /**
+   * Register this host's own bounded `write` for one scope.
+   *
+   * The deployment's write tool writes wherever the model's path resolves; this one first checks that the
+   * granted root contains the resolved target, then writes it through the backend under the Session's
+   * current policy. A scope that may write and cannot get this replacement refuses to install at all,
+   * rather than exposing the unbounded tool.
+   * @param deployment - The deployment's write definition.
+   * @returns A release for the replacement, or undefined when the scope refused it.
+   */
+  const confineWrite = (deployment: ToolDefinition): (() => void) | undefined =>
+    register(FORK_WRITE_TOOL, deployment, async (args, exec) => {
+      const input = isRecord(args) ? args : {}
+      const requested = input.file_path
+      const content = input.content
+      if (typeof requested !== 'string' || requested === '' || typeof content !== 'string') {
+        throw new Error('a fork may only write a named file with text content')
+      }
+      await target.refreshAuthorized?.()
+      requireAuthorized(FORK_WRITE_TOOL)
+      const candidate = await fs.resolve(requested, { cwd: target.cwd, signal: exec.signal })
+      if (!fs.contains(target.grantedRoot, candidate)) {
+        throw new Error('a fork may only write inside the workspace it was granted')
+      }
+      const intent = await childContext.waterfall('fs/write-intent', candidate, exec, () => undefined)
+      await target.refreshAuthorized?.()
+      const policy = target.resolvePolicy()
+      requireAuthorized(FORK_WRITE_TOOL)
+      const outcome = await fs.writeText(candidate, content, intent, exec.signal, policy)
+      childContext.emit('fs/observed', candidate, { kind: 'present', version: outcome.version }, exec)
+      return {
+        path: requested,
+        operation: outcome.operation,
+        before: outcome.before ?? null,
+        after: outcome.after,
+      }
+    })
+  if (target.write === true) {
+    const deploymentWrite = deploymentOf(FORK_WRITE_TOOL)
+    // Without the replacement in place, a write-capable ceiling would expose the deployment's own tool.
+    if (deploymentWrite === undefined || confineWrite(deploymentWrite) === undefined) {
+      for (const dispose of [...installedDisposers].reverse()) dispose()
+      return undefined
+    }
+  }
+  /**
+   * Register this host's own bounded `edit` for one scope.
+   *
+   * The deployment's edit tool edits wherever the model's path resolves; this one first checks that the
+   * granted root contains the resolved target, then edits it through the backend under the Session's
+   * current policy. A deployment without an edit tool simply leaves the name refused by the guard.
+   * @param deployment - The deployment's edit definition.
+   * @returns A release for the replacement, or undefined when the scope refused it.
+   */
+  const confineEdit = (deployment: ToolDefinition): (() => void) | undefined =>
+    register(FORK_EDIT_TOOL, deployment, async (args, exec) => {
+      const edit = sharedEditArguments(args)
+      if (edit === undefined) {
+        throw new Error('a fork may only edit a named file by replacing non-empty text')
+      }
+      await target.refreshAuthorized?.()
+      requireAuthorized(FORK_EDIT_TOOL)
+      const candidate = await fs.resolve(edit.filePath, { cwd: target.cwd, signal: exec.signal })
+      if (!fs.contains(target.grantedRoot, candidate)) {
+        throw new Error('a fork may only write inside the workspace it was granted')
+      }
+      // The edit intent comes from the same waterfall the shipped edit uses, so the deployment's
+      // read-before-write rule keeps deciding here too.
+      const intent = await childContext.waterfall('fs/edit-intent', candidate, exec, () => undefined)
+      await target.refreshAuthorized?.()
+      const policy = target.resolvePolicy()
+      requireAuthorized(FORK_EDIT_TOOL)
+      const outcome = await fs.editText(
+        candidate,
+        { oldString: edit.oldString, newString: edit.newString, replaceAll: edit.replaceAll },
+        intent,
+        exec.signal,
+        policy,
+      )
+      childContext.emit('fs/observed', candidate, { kind: 'present', version: outcome.version }, exec)
+      return { path: fs.processPath(candidate), before: outcome.before, after: outcome.after }
+    })
+  if (target.write === true) {
+    const deploymentEdit = deploymentOf(FORK_EDIT_TOOL)
+    // A failed registration leaves the name out of `vouchedNames`, so the guard refuses it while the
+    // rest of the write surface stays usable.
+    if (deploymentEdit !== undefined) confineEdit(deploymentEdit)
+  }
+  /**
+   * Describe one execution's paths with the search default the child's own replacement supplies.
+   *
+   * A pathless `glob` or `grep` reads the working directory, which is a real path the guard has to
+   * authorize; without it the call would be refused for naming nothing rather than for its effect.
+   * @param execution - The call being judged.
+   * @returns The paths it names and whether it has no file effect.
+   */
+  const describe = (execution: ForkToolExecution): ForkToolPaths =>
+    withDefaultSearchRoot(target.describe(execution), execution.name, target.cwd)
+  // Verdicts are keyed by the runtime's per-execution token: the model-facing call id is reusable, so
+  // a verdict under it could authorize a different execution.
+  const verdicts = new Map<symbol, readonly string[]>()
+  /** Resolve every path one execution names; the granted root decides which of them count. */
+  const confirmPaths = async (execution: ToolExecution): Promise<readonly string[]> => {
+    const paths = describe(execution).paths ?? []
+    const parent = target.grantedRoot
+    const granted: string[] = []
+    for (const path of paths) {
+      const candidate = await fs.resolve(path, { cwd: target.cwd, signal: execution.signal })
+      if (fs.contains(parent, candidate)) granted.push(path)
+    }
+    return granted
+  }
+  const disposeEnforcement = installChildEnforcement<Context>({
+    childSessionId: target.childSessionId,
+    ceiling: target.write === true ? WRITE_FORK_CEILING : READ_ONLY_FORK_CEILING,
+    guard: forkToolGuard({
+      // Attribution reads the agent's own session id: the object the runtime hands the guard need not
+      // be the very instance the registry holds, while that id is the agent's declared identity.
+      childOf: execution =>
+        (execution.agent as { readonly id?: unknown } | undefined)?.id === target.childSessionId
+          ? target.childSessionId
+          : undefined,
+      enforcementInstalled: id => forks.enforcementInstalled(id),
+      // Only definitions this installation vouched for are executable: its own replacements, and the
+      // exact deployment objects of the tools it left in place because they touch no workspace file.
+      // A name whose replacement failed, or that anything else now answers to, is refused.
+      toolIsTrusted: (_id, tool) => {
+        if (target.authorized?.(tool) === false) return false
+        if (vouchedNames.has(tool)) return true
+        const deployment = passthrough.get(tool)
+        return deployment !== undefined && deploymentOf(tool) === deployment
+      },
+      authorizeReadPath: (_id, path, token) => {
+        if (token === undefined) return false
+        const granted = verdicts.get(token)
+        return granted !== undefined && granted.includes(path)
+      },
+    }, id => forks.enforcedCeiling(id), describe),
+    verdictSource: async (execution) => {
+      const { token } = execution
+      if (token === undefined || describe(execution).paths === undefined) return
+      // A resolution that throws or is cancelled confirms nothing for this execution, so no verdict is
+      // recorded and the guard's own refusal names the reason; the tool call itself is not failed here.
+      const granted = await confirmPaths(execution as ToolExecution).catch(() => undefined)
+      if (granted !== undefined) verdicts.set(token, granted)
+    },
+  }, {
+    contextOf: () => childContext,
+    registerGuard: (context, guard) => context.tools.guard(guard),
+    registerVerdictSource: (context, source) => context.on(
+      'tools/pre-execute',
+      async (exec, next): Promise<PreToolDecision> => {
+        // The producer settles before the pipeline continues, so the guard below sees this execution's
+        // verdict; the waterfall's own decision is the one the pipeline receives.
+        await source(exec)
+        return next()
+      },
+    ),
+    recordEnforcement: (id, ceiling) => forks.installEnforcement(id, ceiling),
+    releaseEnforcement: (id) => { forks.releaseEnforcement(id) },
+  })
+  if (disposeEnforcement === undefined) {
+    for (const dispose of [...installedDisposers].reverse()) dispose()
+    return undefined
+  }
+  // One verdict belongs to one execution, so it is dropped as soon as that execution settles; the
+  // disposer clears whatever a cancelled or unobserved execution left behind.
+  const disposeVerdicts = childContext.on('tools/result', (exec) => { verdicts.delete(exec.token) })
+  return () => {
+    disposeVerdicts()
+    verdicts.clear()
+    for (const dispose of [...installedDisposers].reverse()) dispose()
+    disposeEnforcement()
+  }
+}
diff --git a/packages/experimental/liveshare/src/host/fork-policy.ts b/packages/experimental/liveshare/src/host/fork-policy.ts
new file mode 100644
index 0000000000..9f13f4049d
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/fork-policy.ts
@@ -0,0 +1,227 @@
+/**
+ * Who may fork a shared session, at which boundary, and under which permission ceiling.
+ *
+ * A fork creates a new session that the viewer owns, while the source session stays untouched, so
+ * this decision is the security core of the capability: it binds the child to the trusted viewer
+ * subject the Relay asserted and to the share that granted it, refuses anything the share did not
+ * authorize, and states the ceiling the child runs under.
+ */
+
+import { sharedToolNames } from './shared-tools.ts'
+import type { ViewerCapabilityGroup } from './viewer-declarations.ts'
+
+
+/**
+ * What a viewer may do with the shared Session.
+ *
+ * Two tiers, the same two the owner's own permission presets name: `view` reads the shared Session
+ * and drives its loop inside the granted workspace without writing it, and `write` also modifies the
+ * files inside that workspace. Both tiers drive the loop; neither reconfigures the Session the owner
+ * runs. Forking is not a tier: {@link ForkShareState.allowsFork} carries that switch on its own.
+ */
+export type ViewerSessionMode = 'view' | 'write'
+
+/**
+ * Whether one mode includes writing the source session.
+ * @param mode Share mode.
+ * @returns True only for `write`.
+ */
+export function modeAllowsSessionWrite(mode: ViewerSessionMode): boolean {
+  return mode === 'write'
+}
+
+/**
+ * Read one mode from owner input, keeping the compatibility rules in one place.
+ * @param input Untrusted request value for `sessionMode`.
+ * @returns The mode, or undefined when the value is neither a mode nor absent.
+ */
+export function parseSessionMode(input: unknown): ViewerSessionMode | undefined {
+  if (input === undefined || input === null) return undefined
+  return input === 'view' || input === 'write' ? input : undefined
+}
+
+/** Trusted viewer identity a Relay asserted for one request; never a browser-supplied value. */
+export interface ForkViewer {
+  readonly providerId: string
+  readonly tenantId: string
+  readonly subjectId: string
+}
+
+/** What the Relay knows about the share a fork request arrived through. */
+export interface ForkShareState {
+  readonly shareId: string
+  /** Session this share points at; a fork may only ever fork this one. */
+  readonly sessionId: string
+  /**
+   * Whether the owner allowed forking at all.
+   *
+   * Independent of the tier: a view-tier share may allow it, and a writable one may refuse it. A stored
+   * record that omits it reads as off at the boundary that loads the record.
+   */
+  readonly allowsFork: boolean
+  /**
+   * Whether the Relay admitted this viewer to the share, decided by its own mode-aware admission.
+   *
+   * Passed in rather than inferred from the ACL: a selected share that named nobody has an empty
+   * ACL exactly like an organization-wide open share, so an empty set cannot stand in for admission.
+   */
+  readonly viewerAdmitted: boolean
+  /**
+   * Tier the owner configured for this share, when the host knows it.
+   *
+   * Absent means the host cannot tell, and nothing is driven and no fork is installed: a share whose
+   * tier cannot be established never grants more than reading.
+   */
+  readonly sessionMode?: ViewerSessionMode
+  readonly stopped: boolean
+  readonly expiresAt?: string
+  /**
+   * Plugin endpoints this share's owner selected for its viewers, grouped by declaring plugin.
+   *
+   * Absent means the owner exposed none, and the endpoints plugins offer stay refused. This is the grant:
+   * the `share-viewer` policy exposes a plugin endpoint only where this selection and the plugin's live
+   * declaration both name it.
+   */
+  readonly viewerCapabilities?: readonly ViewerCapabilityGroup[]
+}
+
+/** One fork attempt, already carried over the Relay channel with trusted metadata. */
+export interface ForkRequest {
+  readonly shareId: string
+  /** Session the caller believes it is forking; must equal the share's own session. */
+  readonly sourceSessionId: string
+  /** Completed prefix to fork at; absent forks the whole committed history. */
+  readonly atSeq?: number
+  /** Stable key so a retried creation returns the same child instead of making another. */
+  readonly requestKey: string
+}
+
+/** Outcome of one fork authorization. */
+export type ForkDecision =
+  | { readonly ok: true; readonly boundary: number; readonly ceiling: ForkCeiling; readonly requestKey: string }
+  | { readonly ok: false; readonly code: ForkRefusal; readonly message: string }
+
+/** Stable refusals a caller can act on without reading prose. */
+export type ForkRefusal =
+  | 'share-not-found'
+  | 'share-stopped'
+  | 'share-expired'
+  | 'fork-not-permitted'
+  | 'viewer-not-authorized'
+  | 'source-session-mismatch'
+
+/**
+ * Capabilities a forked session runs under.
+ *
+ * A fork must never inherit the source session's ability to change the owner's machine: this list is
+ * the ceiling the Host enforces on the child, not a set of settings a client may raise.
+ */
+export interface ForkCeiling {
+  /** Session carries the read-only marker so its own UI and audit can state the limit. */
+  readonly readOnly: true
+  /** Tools the child may use; anything not named here is refused for this session. */
+  readonly allowedTools: readonly string[]
+  /** Capabilities the child may never reach, enforced by the Host rather than by configuration. */
+  readonly deniedCapabilities: readonly string[]
+}
+
+/**
+ * The ceiling for a shared Session's view tier.
+ *
+ * Every tool here reads files or has no local file effect; the enforcement layers install a confined
+ * replacement for each name and refuse the rest. Tools that could act on the owner's machine or the
+ * owner's session state stay absent: `bash` is excluded because an arbitrary shell cannot be bounded to
+ * a workspace here, and the schedule, computer-use, and plugin-manager capabilities are capabilities the
+ * Host itself owns rather than workspace file operations. Paths every listed tool declares are
+ * resolved and checked against the granted workspace before it runs.
+ */
+export const READ_ONLY_FORK_CEILING: ForkCeiling = {
+  readOnly: true,
+  allowedTools: sharedToolNames('view'),
+  deniedCapabilities: [
+    'bash',
+    'pwsh',
+    'cua',
+    'plugin_manager',
+    'schedule_create',
+    'schedule_list',
+    'schedule_delete',
+    'schedule_update',
+    'write',
+    'edit',
+    'settings-write',
+    'credentials',
+    'plugin-self-modification',
+    'subagent',
+    'workspace-write',
+    'share-management',
+  ],
+}
+
+/**
+ * The ceiling a write-mode scope runs under: the same read surface, plus the two file-mutation tools the
+ * installation bounds itself. The installation replaces the deployment's `write` and `edit` with bodies
+ * that publish only inside the granted workspace, so "may write" never means "may write anywhere the
+ * owner can".
+ */
+export const WRITE_FORK_CEILING: ForkCeiling = {
+  ...READ_ONLY_FORK_CEILING,
+  allowedTools: sharedToolNames('write'),
+  deniedCapabilities: READ_ONLY_FORK_CEILING.deniedCapabilities.filter(name => name !== 'write' && name !== 'edit'),
+}
+
+
+/**
+ * Decide one fork request.
+ * @param share Share state the Relay vouched for.
+ * @param request Fork request, including the session the caller named.
+ * @param now Current epoch milliseconds, so expiry is judged against the caller's clock source.
+ * @returns An allowed decision carrying the boundary and ceiling, or a typed refusal.
+ */
+export function decideFork(
+  share: ForkShareState | undefined,
+  request: ForkRequest,
+  now: number,
+): ForkDecision {
+  if (share === undefined || share.shareId !== request.shareId) {
+    return { ok: false, code: 'share-not-found', message: 'share is not registered' }
+  }
+  if (share.stopped) return { ok: false, code: 'share-stopped', message: 'share is stopped' }
+  if (isExpired(share.expiresAt, now)) {
+    return { ok: false, code: 'share-expired', message: 'share has expired' }
+  }
+  if (!share.allowsFork) {
+    return {
+      ok: false,
+      code: 'fork-not-permitted',
+      message: 'the owner has not allowed forking this share',
+    }
+  }
+  if (!share.viewerAdmitted) {
+    return { ok: false, code: 'viewer-not-authorized', message: 'viewer may not fork this share' }
+  }
+  // The share names its own session, so a caller cannot point a fork at another session it can name.
+  if (request.sourceSessionId !== share.sessionId) {
+    return {
+      ok: false,
+      code: 'source-session-mismatch',
+      message: 'the requested session is not the session this share carries',
+    }
+  }
+  return { ok: true, boundary: request.atSeq ?? 0, ceiling: READ_ONLY_FORK_CEILING, requestKey: request.requestKey }
+}
+
+/**
+ * Whether one share's deadline has passed.
+ *
+ * Exported because every path that acts on a share's behalf re-reads that share before it acts: a fork
+ * decision and a shared Session's own prompt both have to refuse an expired share the same way.
+ * @param expiresAt - ISO deadline the owner set, or undefined when the share never expires.
+ * @param now - Epoch milliseconds to judge against.
+ * @returns True when the deadline exists and has passed.
+ */
+export function isExpired(expiresAt: string | undefined, now: number): boolean {
+  if (expiresAt === undefined) return false
+  const parsed = Date.parse(expiresAt)
+  return Number.isFinite(parsed) && parsed <= now
+}
diff --git a/packages/experimental/liveshare/src/host/fork-registry.ts b/packages/experimental/liveshare/src/host/fork-registry.ts
new file mode 100644
index 0000000000..2abfe12458
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/fork-registry.ts
@@ -0,0 +1,524 @@
+/**
+ * Durable record of the child sessions a fork created, under either share tier.
+ *
+ * The registry is what makes a fork isolatable: it knows which share and which viewer produced a
+ * child, so a viewer's list shows only its own children, a revoked share stops its children, and a
+ * child's prompt can be refused for a reason the Host can name. It also holds the ceiling the child
+ * runs under, and refuses every prompt until that ceiling is installed and verified.
+ *
+ * One DSH home can be served by several Host processes, so every change is committed as a
+ * read-modify-write under the cross-process writer lock of `@deepseek-ai/dsh-atomic-write`: the file
+ * is re-read inside the lock, this process's own changes are applied to what it holds, and the result
+ * replaces the file in one atomic step. A change therefore cannot be dropped by a concurrent write
+ * from another process, and an entry another process changed is never restored from this process's
+ * older copy.
+ */
+
+import { mkdirSync, readFileSync } from 'node:fs'
+import { dirname } from 'node:path'
+import { withFileLock, writeFileAtomic } from '@deepseek-ai/dsh-atomic-write'
+import type { ForkCeiling } from './fork-policy.ts'
+
+/** Trusted creator identity of one child session. */
+export interface ForkCreator {
+  readonly providerId: string
+  readonly tenantId: string
+  readonly subjectId: string
+}
+
+/** One recorded child session and where it came from. */
+export interface ForkRecord {
+  readonly childSessionId: string
+  /** Share that authorized the fork. */
+  readonly shareId: string
+  /** Session the child was forked from; the source is never modified. */
+  readonly sourceSessionId: string
+  /** Completed prefix the child started from. */
+  readonly boundary: number
+  readonly creator: ForkCreator
+  readonly createdAt: string
+  /** Set when the source share stopped, expired, or was revoked; the child is kept, not deleted. */
+  readonly revokedAt?: string
+}
+
+/** Why one child session may not run a prompt. */
+export type ForkPromptRefusal =
+  | 'fork-unknown-child'
+  | 'fork-viewer-mismatch'
+  | 'fork-source-revoked'
+  | 'fork-ceiling-uninstalled'
+  /** Preparing a cold child through the owner's service failed, so nothing was admitted. */
+  | 'fork-prepare-failed'
+
+/** Whether one child may accept a prompt. */
+export type ForkPromptDecision =
+  | { readonly ok: true }
+  | { readonly ok: false; readonly code: ForkPromptRefusal; readonly message: string }
+
+/** One logical fork request this host already served, so a retry resolves to its child. */
+export interface ForkOperation {
+  /** Identity of the logical request: trusted viewer, share, source, and the caller's operation id. */
+  readonly key: string
+  /** Child this request produced; empty while the request is only reserved. */
+  readonly childSessionId: string
+  /** Boundary the request named, which a retry of the same identity must repeat. */
+  readonly boundary: number
+  /**
+   * Whether the child was left ready to be driven.
+   *
+   * A request whose child was created but could not be given read-only limits is remembered so a retry
+   * does not fork again, and this flag keeps that record from ever reading as a success.
+   */
+  readonly ready: boolean
+  /** The owner's own answer, replayed verbatim so a retry reports the child it already created. */
+  readonly status: number
+  readonly body: unknown
+}
+
+/** Persisted document; `version` lets a later change migrate instead of guessing. */
+interface ForkRegistryFile {
+  readonly version: 1
+  readonly forks: readonly ForkRecord[]
+  readonly operations?: readonly ForkOperation[]
+}
+
+/** The entries one registry document holds. */
+interface RegistryEntries {
+  readonly forks: readonly ForkRecord[]
+  readonly operations: readonly ForkOperation[]
+}
+
+/** One batch of this process's changes, applied to the file inside the writer lock. */
+interface ForkRegistryDelta {
+  readonly forks: ReadonlyMap<string, ForkRecord>
+  readonly operations: ReadonlyMap<string, ForkOperation>
+  /** Withdrawals applied to every entry the file holds for that share, whoever recorded it. */
+  readonly revocations: ReadonlyMap<string, string>
+}
+
+/**
+ * Child-session registry with owner-only persistence and a default-deny prompt gate.
+ *
+ * Every mutation resolves once the file holds it and rejects when it could not be written, so a caller
+ * that must not continue on an unwritten record — a reserved request, a withdrawn share — can await it
+ * and stop. The registry's own reads stay in memory: the file is read at construction and each write
+ * re-reads it, but an entry another process adds is not merged into this instance's maps.
+ */
+export class ForkRegistry {
+  private readonly records = new Map<string, ForkRecord>()
+  /** Logical requests already served, keyed by identity; a retry resolves to the recorded child. */
+  private readonly operations = new Map<string, ForkOperation>()
+  /** Changes this process made that the file does not hold yet, keyed as the document keys them. */
+  private readonly pendingForks = new Map<string, ForkRecord>()
+  private readonly pendingOperations = new Map<string, ForkOperation>()
+  /**
+   * Shares this process withdrew and has not recorded a child for since.
+   *
+   * Only a repeated withdrawal of the same share is suppressed: the first batch already withdrew every
+   * entry the file held, and a child recorded afterwards is a new child, not one the withdrawal named.
+   * The marker is dropped when a new child is recorded, so withdrawing the share again (after its fork
+   * switch was turned back on) withdraws that child too.
+   */
+  private readonly withdrawnShares = new Map<string, string>()
+  /** Withdrawals this process still has to commit, keyed by share; cleared once a batch carries them. */
+  private readonly pendingRevocations = new Map<string, string>()
+  /** Runs this process's batches one at a time, in the order the changes were made. */
+  private chain: Promise<unknown> = Promise.resolve()
+  /**
+   * Ceiling enforced for each child that actually has one installed.
+   *
+   * Enforcement is per child, not per host: a guard registers on one child's own scoped context, so a
+   * successful install for one child says nothing about its siblings, and a child restored from the
+   * registry file after a restart has no live guard until one is registered again. A single host-wide
+   * flag would let the first child to install open every other child's prompt.
+   */
+  private readonly enforced = new Map<string, ForkCeiling>()
+
+  /**
+   * @param file JSON file this registry reads at construction and rewrites on every change.
+   */
+  constructor(private readonly file: string) {
+    const document = this.load()
+    for (const record of document.forks) this.records.set(record.childSessionId, record)
+    for (const operation of document.operations) this.operations.set(operation.key, operation)
+  }
+
+  /**
+   * The child one logical fork request already produced.
+   * @param key - identity of that request.
+   * @returns The recorded operation, or undefined when this host never served it.
+   */
+  operationOf(key: string): ForkOperation | undefined {
+    return this.operations.get(key)
+  }
+
+  /**
+   * Record one served fork under its logical identity, so a retry resolves to the same child.
+   * @param operation - The identity, its boundary, and the owner's answer to replay.
+   * @returns A promise that rejects when the record could not be written.
+   */
+  async recordOperation(operation: ForkOperation): Promise<void> {
+    this.operations.set(operation.key, operation)
+    this.pendingOperations.set(operation.key, operation)
+    await this.persist()
+  }
+
+  /**
+   * Bind one logical request to the boundary it named, before any child exists.
+   *
+   * A durable binding is what makes a later request of the same identity naming another boundary a
+   * conflict rather than a second fork, even when the process that reserved it never finished creating
+   * the child. A reservation is replaced by {@link recordOperation} once the child exists.
+   * @param key - Identity of the logical request.
+   * @param boundary - Normalized boundary that request selected.
+   * @returns A promise that rejects when the reservation could not be written.
+   */
+  async reserveOperation(key: string, boundary: number): Promise<void> {
+    if (this.operations.has(key)) return
+    const operation: ForkOperation = { key, boundary, childSessionId: '', ready: false, status: 0, body: undefined }
+    this.operations.set(key, operation)
+    this.pendingOperations.set(key, operation)
+    await this.persist()
+  }
+
+  /**
+   * Record that one child's own execution limit is installed.
+   *
+   * The caller registers that child's scoped guard first and calls this only after it returns, so the
+   * record states a fact about the child rather than an intention about the host.
+   * @param childSessionId Child whose limit was installed.
+   * @param ceiling Ceiling its guard enforces.
+   * @returns False when this host never recorded that child, so a failed install is distinguishable.
+   */
+  installEnforcement(childSessionId: string, ceiling: ForkCeiling): boolean {
+    if (!this.records.has(childSessionId)) return false
+    this.enforced.set(childSessionId, ceiling)
+    return true
+  }
+
+  /**
+   * Record that one child's guard is gone, so its prompts are refused again.
+   * @param childSessionId Child whose guard was disposed.
+   */
+  releaseEnforcement(childSessionId: string): void {
+    this.enforced.delete(childSessionId)
+  }
+
+  /**
+   * Whether one child's own execution limit is installed.
+   * @param childSessionId Child to check.
+   * @returns True only while that child has a live guard.
+   */
+  enforcementInstalled(childSessionId: string): boolean {
+    const record = this.records.get(childSessionId)
+    return record !== undefined && record.revokedAt === undefined && this.enforced.has(childSessionId)
+  }
+
+  /**
+   * Record one child session, replacing an identical previous record.
+   * @param record Child, its source, its creator, and the boundary it started from.
+   * @returns A promise that rejects when the record could not be written.
+   */
+  async record(record: ForkRecord): Promise<void> {
+    // A new child of a share this process withdrew exists after that withdrawal, so it does not inherit
+    // it; the dropped marker also lets a later withdrawal of the share name this child.
+    if (!this.records.has(record.childSessionId)) this.withdrawnShares.delete(record.shareId)
+    this.records.set(record.childSessionId, record)
+    this.pendingForks.set(record.childSessionId, record)
+    await this.persist()
+  }
+
+  /**
+   * Find one child session.
+   * @param childSessionId Child session to look up.
+   * @returns The record, or undefined when this Host never created that child.
+   */
+  find(childSessionId: string): ForkRecord | undefined {
+    return this.records.get(childSessionId)
+  }
+
+  /**
+   * Children one viewer created, which is what the viewer's own list may show.
+   * @param creator Trusted viewer identity the Relay asserted.
+   * @returns That viewer's children, newest last.
+   */
+  listForCreator(creator: ForkCreator): readonly ForkRecord[] {
+    return [...this.records.values()].filter(record => sameCreator(record.creator, creator))
+  }
+
+  /**
+   * Children one share produced, for the source owner's view.
+   * @param shareId Source share.
+   * @returns Every child of that share, whoever created it.
+   */
+  listForShare(shareId: string): readonly ForkRecord[] {
+    return [...this.records.values()].filter(record => record.shareId === shareId)
+  }
+
+  /**
+   * Mark every child of one share revoked without deleting it, so history and audit survive.
+   * @param shareId Source share that stopped, expired, or lost authorization.
+   * @param now ISO time of the revocation.
+   * @returns A promise that rejects when the withdrawal could not be written.
+   */
+  async revokeShare(shareId: string, now: string): Promise<void> {
+    let changed = false
+    for (const [childSessionId, record] of this.records) {
+      if (record.shareId !== shareId || record.revokedAt !== undefined) continue
+      const revoked = { ...record, revokedAt: now }
+      this.records.set(childSessionId, revoked)
+      this.pendingForks.set(childSessionId, revoked)
+      changed = true
+    }
+    // The first withdrawal is written even when this instance knows no child of that share yet: the
+    // batch applies it to whatever the file holds, which is where a child another process recorded for
+    // that share lives. Repeating it adds nothing once it is recorded.
+    // A withdrawal a failed batch still owes is retried by another call; only one already committed
+    // and not superseded by a new child is a no-op.
+    if (!changed && this.withdrawnShares.has(shareId) && !this.pendingRevocations.has(shareId)) return
+    this.withdrawnShares.set(shareId, now)
+    this.pendingRevocations.set(shareId, now)
+    await this.persist()
+  }
+
+  /**
+   * Decide whether one child session may run a prompt.
+   * @param childSessionId Child session the prompt targets.
+   * @param viewer Trusted viewer identity the Relay asserted.
+   * @returns Allowed only for that child's creator, with the source live and the ceiling installed.
+   */
+  allowsPrompt(childSessionId: string, viewer: ForkCreator): ForkPromptDecision {
+    const record = this.records.get(childSessionId)
+    if (record === undefined) {
+      return { ok: false, code: 'fork-unknown-child', message: 'this session is not a fork of a share' }
+    }
+    if (!sameCreator(record.creator, viewer)) {
+      return { ok: false, code: 'fork-viewer-mismatch', message: 'this fork belongs to another viewer' }
+    }
+    if (record.revokedAt !== undefined) {
+      return { ok: false, code: 'fork-source-revoked', message: 'the share this fork came from is no longer active' }
+    }
+    // This child's own guard, not a host-wide flag: a sibling's successful install must not open this
+    // child's prompt.
+    if (!this.enforced.has(childSessionId)) {
+      return {
+        ok: false,
+        code: 'fork-ceiling-uninstalled',
+        message: 'read-only execution limits are not installed on this host',
+      }
+    }
+    return { ok: true }
+  }
+
+  /**
+   * Ceiling installed for one child, for the caller that has to apply it.
+   * @param childSessionId Child whose ceiling is asked for.
+   * @returns That child's ceiling, or undefined while its prompts are refused.
+   */
+  enforcedCeiling(childSessionId: string): ForkCeiling | undefined {
+    return this.enforcementInstalled(childSessionId) ? this.enforced.get(childSessionId) : undefined
+  }
+
+  /**
+   * Read the registry at construction.
+   *
+   * A file that cannot be read or understood reads as empty here rather than failing the Host's start;
+   * the write path refuses that same file, so nothing replaces content it could not read.
+   * @returns The entries the file holds, or nothing.
+   */
+  private load(): RegistryEntries {
+    try {
+      return readRegistry(this.file)
+    } catch (error) {
+      // A corrupt registry is treated as empty: children then read as unknown and are refused.
+      void error
+      return { forks: [], operations: [] }
+    }
+  }
+
+  /**
+   * Commit every change this process made since the previous batch.
+   *
+   * Batches run one at a time in call order, so a later change can never be undone by an earlier one.
+   * @returns A promise that rejects when the file could not be written, keeping that batch pending for
+   * the next change to retry.
+   */
+  private persist(): Promise<void> {
+    const delta: ForkRegistryDelta = {
+      forks: new Map(this.pendingForks),
+      operations: new Map(this.pendingOperations),
+      revocations: new Map(this.pendingRevocations),
+    }
+    this.pendingForks.clear()
+    this.pendingOperations.clear()
+    this.pendingRevocations.clear()
+    const attempt = this.chain.then(() => this.commit(delta))
+    // A failed batch must not stop the ones after it; retain() puts its changes back in the pending maps.
+    this.chain = attempt.then(() => undefined, () => undefined)
+    return attempt
+  }
+
+  /**
+   * Apply one batch to the file, holding the cross-process writer lock for the whole cycle.
+   *
+   * The file is re-read inside the lock and the batch is applied to what it holds, so an entry no batch
+   * touched survives whatever another process wrote since this instance last read, and an entry this
+   * process changed is written on top of that other write instead of replacing it with an older copy.
+   * @param delta - This process's changes.
+   * @returns A promise that resolves once the replace has committed.
+   */
+  private async commit(delta: ForkRegistryDelta): Promise<void> {
+    try {
+      // The lock is a sibling of the file, so its directory has to exist before it is acquired.
+      mkdirSync(dirname(this.file), { recursive: true })
+      await withFileLock(this.file, async () => {
+        const base = readRegistry(this.file)
+        const forks = new Map(base.forks.map(entry => [entry.childSessionId, entry]))
+        // A withdrawal names the children that existed when it committed: every entry the file held
+        // then, whichever process wrote it. Entries this batch adds are new children created after the
+        // withdrawal, so they are merged below, outside this loop, and never inherit its timestamp.
+        for (const [shareId, revokedAt] of delta.revocations) {
+          for (const [childSessionId, entry] of forks) {
+            if (entry.shareId !== shareId || entry.revokedAt !== undefined) continue
+            forks.set(childSessionId, { ...entry, revokedAt })
+          }
+        }
+        for (const [childSessionId, entry] of delta.forks) {
+          const revokedAt = forks.get(childSessionId)?.revokedAt ?? entry.revokedAt
+          forks.set(childSessionId, revokedAt === undefined ? entry : { ...entry, revokedAt })
+        }
+        const operations = new Map(base.operations.map(entry => [entry.key, entry]))
+        for (const [key, entry] of delta.operations) operations.set(key, entry)
+        const document: ForkRegistryFile = {
+          version: 1,
+          forks: [...forks.values()],
+          operations: [...operations.values()],
+        }
+        await writeFileAtomic(this.file, JSON.stringify(document, null, 2), { mode: 0o600 })
+      })
+    } catch (error) {
+      this.retain(delta)
+      throw error
+    }
+  }
+
+  /**
+   * Put a batch that failed to commit back among the pending changes, unless a later change already
+   * replaced those entries, so the next mutation writes them again instead of dropping them.
+   * @param delta - The batch whose commit failed.
+   */
+  private retain(delta: ForkRegistryDelta): void {
+    for (const [childSessionId, entry] of delta.forks) {
+      if (this.pendingForks.has(childSessionId) || this.records.get(childSessionId) !== entry) continue
+      this.pendingForks.set(childSessionId, entry)
+    }
+    for (const [key, entry] of delta.operations) {
+      if (this.pendingOperations.has(key) || this.operations.get(key) !== entry) continue
+      this.pendingOperations.set(key, entry)
+    }
+    for (const [shareId, revokedAt] of delta.revocations) {
+      // Retry a withdrawal that is still this process's current one. A newer withdrawal already
+      // replaced the marker, or a new child cleared it, so replaying this batch could withdraw a child
+      // it never named.
+      if (this.withdrawnShares.get(shareId) === revokedAt) this.pendingRevocations.set(shareId, revokedAt)
+    }
+  }
+}
+
+/**
+ * Read one registry document from disk.
+ *
+ * An absent file is the ordinary state before the first fork and reads as empty. A file that exists but
+ * cannot be read or understood throws, because a read-modify-write must not replace content it could
+ * not read. A single entry that fails its own validation is dropped while the rest of the document is
+ * kept, which is what lets a file an older version wrote stay readable.
+ * @param file - Registry file to read.
+ * @returns The entries the file holds.
+ */
+function readRegistry(file: string): RegistryEntries {
+  let raw: string
+  try {
+    raw = readFileSync(file, 'utf8')
+  } catch (error) {
+    if ((error as NodeJS.ErrnoException).code === 'ENOENT') return { forks: [], operations: [] }
+    throw error
+  }
+  const parsed: unknown = JSON.parse(raw)
+  if (typeof parsed !== 'object' || parsed === null) throw notARegistry(file)
+  const value = parsed as { readonly version?: unknown; readonly forks?: unknown; readonly operations?: unknown }
+  if (value.version !== 1 || !Array.isArray(value.forks)) throw notARegistry(file)
+  return {
+    forks: value.forks.filter(isForkRecord),
+    // Operations are optional: a file written before they existed carries none. An entry that cannot be
+    // read at all is dropped, but one that merely predates a field keeps its identity and child — see
+    // readForkOperation.
+    operations: Array.isArray(value.operations)
+      ? value.operations.flatMap((entry) => {
+        const operation = readForkOperation(entry)
+        return operation === undefined ? [] : [operation]
+      })
+      : [],
+  }
+}
+
+/**
+ * The failure a rewrite reports instead of discarding a document it cannot understand.
+ * @param file - Registry file that failed to parse.
+ * @returns The error to throw.
+ */
+function notARegistry(file: string): Error {
+  return new Error(`liveshare: refusing to rewrite ${file}: not a version 1 fork registry document`)
+}
+
+function sameCreator(left: ForkCreator, right: ForkCreator): boolean {
+  return left.providerId === right.providerId
+    && left.tenantId === right.tenantId
+    && left.subjectId === right.subjectId
+}
+
+function isForkRecord(value: unknown): value is ForkRecord {
+  if (typeof value !== 'object' || value === null) return false
+  const record = value as Record<string, unknown>
+  return typeof record.childSessionId === 'string' && record.childSessionId !== ''
+    && typeof record.shareId === 'string' && record.shareId !== ''
+    && typeof record.sourceSessionId === 'string' && record.sourceSessionId !== ''
+    && typeof record.boundary === 'number' && Number.isSafeInteger(record.boundary)
+    && isForkCreator(record.creator)
+    && typeof record.createdAt === 'string'
+    && (record.revokedAt === undefined || typeof record.revokedAt === 'string')
+}
+
+/**
+ * Read one persisted operation, keeping the identity→child relation older files carry.
+ *
+ * A record written before readiness existed cannot be confirmed as ready, so it is not discarded: it
+ * keeps the child it named — a retry must not create a second one — and reads as unconfirmed, which is
+ * what stops an unenforced child from being replayed as a success. Only an entry that cannot identify
+ * its request and child at all is dropped.
+ * @param value - One entry from the registry file.
+ * @returns The operation, or undefined when the entry identifies nothing.
+ */
+function readForkOperation(value: unknown): ForkOperation | undefined {
+  if (typeof value !== 'object' || value === null) return undefined
+  const operation = value as Record<string, unknown>
+  if (typeof operation.key !== 'string' || operation.key === '') return undefined
+  // Empty names a reservation: the request is bound to a boundary, and its child does not exist yet.
+  if (typeof operation.childSessionId !== 'string') return undefined
+  if (typeof operation.boundary !== 'number' || !Number.isSafeInteger(operation.boundary)) return undefined
+  return {
+    key: operation.key,
+    childSessionId: operation.childSessionId,
+    boundary: operation.boundary,
+    ready: operation.ready === true,
+    status: typeof operation.status === 'number' ? operation.status : 0,
+    body: operation.body,
+  }
+}
+
+function isForkCreator(value: unknown): value is ForkCreator {
+  if (typeof value !== 'object' || value === null) return false
+  const creator = value as Record<string, unknown>
+  return typeof creator.providerId === 'string' && creator.providerId !== ''
+    && typeof creator.tenantId === 'string'
+    && typeof creator.subjectId === 'string' && creator.subjectId !== ''
+}
diff --git a/packages/experimental/liveshare/src/host/fork-tool-guard.ts b/packages/experimental/liveshare/src/host/fork-tool-guard.ts
new file mode 100644
index 0000000000..05fb3dac9d
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/fork-tool-guard.ts
@@ -0,0 +1,268 @@
+/**
+ * The guard a forked child's own scoped tool runtime runs before every dispatch.
+ *
+ * It is registered on one child's context, so it speaks for that child alone: it refuses anything the
+ * ceiling does not permit, and it decides paths through the host's real filesystem authorization
+ * rather than by comparing strings or trusting a tool name. The return value is the reason string the
+ * tool runtime expects, and a refusal is monotonic — nothing downstream can turn it back into an
+ * allow.
+ */
+
+import { forkToolDecision, type ForkToolDecision } from './fork-ceiling.ts'
+import type { ForkCeiling } from './fork-policy.ts'
+
+/** One tool execution as the runtime presents it to a guard. */
+export interface ForkToolExecution {
+  /** Tool being dispatched, as the harness names it. */
+  readonly name: string
+  /** Parsed arguments the tool will receive. */
+  readonly arguments: unknown
+  /** Agent the call runs on behalf of, which identifies the child. */
+  readonly agent?: unknown
+  /**
+   * Per-execution identity the runtime assigns.
+   *
+   * The model-facing `callId` is caller-supplied and reusable, so a verdict keyed on it could be
+   * replayed by another call; this token is the runtime's own handle for exactly one execution.
+   */
+  readonly token?: symbol
+  /** Turn this execution serves, as the driving loop reported it; absent when it serves none. */
+  readonly turn?: number
+}
+
+/** Host services the guard needs; none of them is a guess the guard could make itself. */
+export interface ForkToolGuardPorts {
+  /** Child session one execution belongs to, or undefined when it cannot be attributed. */
+  readonly childOf: (execution: ForkToolExecution) => string | undefined
+  /** Whether that child's execution limit is installed on this host. */
+  readonly enforcementInstalled: (childSessionId: string) => boolean
+  /**
+   * Whether the definition about to run is one this host vouches for.
+   *
+   * A child's scope can register its own tool, and a scope-local registration shadows the
+   * deployment's one under the same name, so the executed name is not evidence of what will run. The
+   * host vouches for the deployment's own definition and for the ones it installed into this child's
+   * scope itself; anything else is refused before the ceiling considers the name.
+   */
+  readonly toolIsTrusted: (childSessionId: string, tool: string) => boolean
+  /**
+   * Whether this exact execution already had that path authorized.
+   *
+   * The host answers this from the asynchronous resolution it performed for this token, never from a
+   * string comparison here, so a symlink, a relative escape, or an encoded separator is decided by
+   * the same code that would open the file. A missing token or a missing verdict is a refusal.
+   */
+  readonly authorizeReadPath: (childSessionId: string, path: string, token: symbol | undefined) => boolean
+}
+
+/** Ceiling decision for one tool name, and the paths its arguments name. */
+export interface ForkToolGuardRequest {
+  /** Child the execution belongs to. */
+  readonly childSessionId: string
+  /** Tool name. */
+  readonly tool: string
+  /**
+   * Paths the arguments name, or undefined when they could not be established.
+   *
+   * Undefined is not "no paths": a tool whose arguments could not be interpreted, `grep` falling back
+   * to its default directory, or a locally registered tool reusing a name all mean the paths are
+   * unknown, and an unknown path set is refused rather than treated as empty.
+   */
+  readonly paths: readonly string[] | undefined
+  /** Whether the tool declares that it touches no filesystem at all. */
+  readonly noFileEffect: boolean
+  /** Runtime handle of this exact execution, which the authorization must be bound to. */
+  readonly token?: symbol
+}
+
+/**
+ * Decide one tool execution for one child.
+ *
+ * A name this child's own scope registered is refused before the ceiling reads it, so shadowing a
+ * permitted name cannot smuggle in a different tool. A permitted read tool is then allowed only when
+ * every path it names is authorized; a tool whose effect cannot be established, or whose paths cannot
+ * be authorized, is refused rather than allowed by default. An empty path set is not evidence of no
+ * paths: it is allowed only when the tool itself declares that it has no filesystem effect, so an
+ * unparsed argument list cannot slip through. `bash` and the other acting capabilities never reach
+ * the path check.
+ * @param ceiling Ceiling enforced for that child.
+ * @param request Execution facts the host extracted.
+ * @param ports Host filesystem and enforcement services.
+ * @returns Allowed, or the reason to refuse.
+ */
+export function decideForkToolUse(
+  ceiling: ForkCeiling | undefined,
+  request: ForkToolGuardRequest,
+  ports: Pick<ForkToolGuardPorts, 'authorizeReadPath' | 'toolIsTrusted'>,
+): ForkToolDecision {
+  const decision = forkToolDecision(ceiling, {
+    childSessionId: request.childSessionId,
+    sessionId: request.childSessionId,
+    tool: request.tool,
+  })
+  if (!decision.ok) return decision
+  if (!ports.toolIsTrusted(request.childSessionId, request.tool)) {
+    return {
+      ok: false,
+      code: 'fork-tool-not-permitted',
+      message: `a fork may not use ${request.tool}, which this host did not install`,
+    }
+  }
+  if (request.paths === undefined) {
+    return {
+      ok: false,
+      code: 'fork-paths-unknown',
+      message: 'a fork may not run a tool whose paths could not be established',
+    }
+  }
+  if (request.paths.length === 0 && !request.noFileEffect) {
+    return {
+      ok: false,
+      code: 'fork-paths-unknown',
+      message: 'a fork may not run a tool whose filesystem effect could not be established',
+    }
+  }
+  for (const path of request.paths) {
+    if (!ports.authorizeReadPath(request.childSessionId, path, request.token)) {
+      return {
+        ok: false,
+        code: 'fork-path-outside-workspace',
+        message: 'a fork may only read inside the workspace it was granted',
+      }
+    }
+  }
+  return { ok: true }
+}
+
+/**
+ * Build the guard one child's tool runtime registers.
+ *
+ * The returned function matches `ToolGuard` structurally — a reason string or undefined — so the host
+ * registers it with `tools.guard(...)` on the child's own context without this package depending on the
+ * tool runtime.
+ * @param ports Host services the guard cannot decide for itself.
+ * @param ceilingOf Ceiling installed for one child.
+ * @param describe Names that tool's arguments, from its own description: the paths it touches, or
+ * undefined when they cannot be established, and whether it touches no filesystem at all.
+ * @returns The guard to register, which refuses whenever the child cannot be attributed.
+ */
+export function forkToolGuard(
+  ports: ForkToolGuardPorts,
+  ceilingOf: (childSessionId: string) => ForkCeiling | undefined,
+  describe: (execution: ForkToolExecution) => { readonly paths: readonly string[] | undefined; readonly noFileEffect: boolean },
+): (execution: ForkToolExecution) => string | undefined {
+  return (execution) => {
+    const childSessionId = ports.childOf(execution)
+    // An execution this guard cannot attribute to a child is refused: the guard speaks for children,
+    // and an unattributed call is not one it can vouch for.
+    if (childSessionId === undefined) return 'a fork may not act without a child session'
+    if (!ports.enforcementInstalled(childSessionId)) {
+      return 'read-only execution limits are not installed for this fork'
+    }
+    const decision = decideForkToolUse(ceilingOf(childSessionId), {
+      childSessionId,
+      tool: execution.name,
+      ...describe(execution),
+      ...(execution.token === undefined ? {} : { token: execution.token }),
+    }, ports)
+    return decision.ok ? undefined : decision.message
+  }
+}
+
+/** Host services one child-scoped guard installation needs. */
+export interface ChildEnforcementPorts<Context> {
+  /** The child's own scoped context, or undefined when this host cannot reach it. */
+  readonly contextOf: (childSessionId: string) => Context | undefined
+  /**
+   * Register the guard on that context.
+   *
+   * The runtime returns its own disposer; returning undefined means nothing was registered, and the
+   * installation must not be recorded as installed.
+   */
+  readonly registerGuard: (
+    context: Context,
+    guard: (execution: ForkToolExecution) => string | undefined,
+  ) => (() => void) | undefined
+  /** Record that this child's limit is installed; false when this host never recorded that child. */
+  readonly recordEnforcement: (childSessionId: string, ceiling: ForkCeiling) => boolean
+  /** Drop that record when the installation is released, so the child refuses again. */
+  readonly releaseEnforcement: (childSessionId: string) => void
+  /**
+   * Register the async producer that writes this execution's path verdict before the guard runs.
+   *
+   * Verified paths live there, keyed by the runtime's per-execution token, so the synchronous guard
+   * only ever consumes a verdict produced by the real resolution for that same execution.
+   */
+  readonly registerVerdictSource: (
+    context: Context,
+    source: (execution: ForkToolExecution) => Promise<void>,
+  ) => (() => void) | undefined
+}
+
+/** One context owns the persistent guard and its replaceable enforcement installation. */
+interface ChildGuardOwner {
+  installation?: {
+    readonly guard: (execution: ForkToolExecution) => string | undefined
+    readonly dispose: () => void
+  }
+}
+
+/**
+ * Install one child's execution limit and return its disposer.
+ *
+ * The child context owns one persistent guard. Reinstallation replaces its verdict source and
+ * decision together, without retaining the previous installation's path verdicts. Calls fail closed
+ * while no installation is published, including registration failure and release.
+ *
+ * The enforcement record is written only after both runtime registrations succeed. Release drops
+ * that record and the verdict producer, but leaves the context's guard registered; an obsolete
+ * disposer cannot release a successor. Scope teardown owns the persistent guard's removal.
+ * @param input Child to enforce, the ceiling to enforce, and the guard to register.
+ * @param ports Host context lookup, guard registration, and enforcement record.
+ * @returns The disposer that releases the limit, or undefined when nothing was installed.
+ */
+export function installChildEnforcement<Context>(
+  input: {
+    readonly childSessionId: string
+    readonly ceiling: ForkCeiling
+    readonly guard: (execution: ForkToolExecution) => string | undefined
+    readonly verdictSource: (execution: ForkToolExecution) => Promise<void>
+  },
+  ports: ChildEnforcementPorts<Context>,
+): (() => void) | undefined {
+  const context = ports.contextOf(input.childSessionId)
+  if (context === undefined) return undefined
+  const scoped = context as Context & { readonly liveshareForkToolGuard?: ChildGuardOwner }
+  let owner = Object.hasOwn(scoped, 'liveshareForkToolGuard') ? scoped.liveshareForkToolGuard : undefined
+  owner?.installation?.dispose()
+  const disposeVerdicts = ports.registerVerdictSource(context, input.verdictSource)
+  if (disposeVerdicts === undefined) return undefined
+  if (owner === undefined) {
+    const created: ChildGuardOwner = {}
+    if (ports.registerGuard(context, execution => created.installation === undefined
+      ? 'read-only execution limits are not installed for this fork'
+      : created.installation.guard(execution)) === undefined) {
+      disposeVerdicts()
+      return undefined
+    }
+    // An inherited context must not reuse its ancestor's guard owner.
+    Object.defineProperty(scoped, 'liveshareForkToolGuard', { value: created })
+    owner = created
+  }
+  if (!ports.recordEnforcement(input.childSessionId, input.ceiling)) {
+    disposeVerdicts()
+    return undefined
+  }
+  const held = owner
+  const installation = {
+    guard: input.guard,
+    dispose: () => {
+      if (held.installation !== installation) return
+      delete held.installation
+      disposeVerdicts()
+      ports.releaseEnforcement(input.childSessionId)
+    },
+  }
+  held.installation = installation
+  return installation.dispose
+}
diff --git a/packages/experimental/liveshare/src/host/owner-authorization.ts b/packages/experimental/liveshare/src/host/owner-authorization.ts
new file mode 100644
index 0000000000..1166bb2f5e
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/owner-authorization.ts
@@ -0,0 +1,191 @@
+/**
+ * The host's half of one owner-authorization: a transaction the browser starts here, a single-use code the
+ * Relay issues on its own origin, and the verifier only this host holds.
+ *
+ * The owner authorizes one DSH instance to be reported by one Relay address. The long-term credential
+ * never travels through the browser: the Relay issues a code to the page it served, the page reports that
+ * code back to the exact origin this transaction bound, and this host redeems it over TLS with the PKCE
+ * verifier that never left the process. Every binding — Relay, instance, origin, state — is checked again
+ * at redemption, and the transaction is consumed by exactly one completion.
+ */
+
+import { createHash, randomBytes } from 'node:crypto'
+
+/** Why one owner-authorization attempt was refused. */
+export type OwnerAuthorizationRefusal =
+  /** No transaction has this id, or it was already completed. */
+  | 'unknown-transaction'
+  /** The transaction outlived its deadline. */
+  | 'expired'
+  /** The request did not come from the page that began the transaction. */
+  | 'origin-mismatch'
+  /** The address in force is not the one this transaction authorized. */
+  | 'relay-changed'
+  /** This host's instance is not the one the transaction was minted for. */
+  | 'instance-changed'
+
+/** One transaction the host began and is waiting to complete. */
+export interface OwnerAuthorizationTransaction {
+  /**
+   * Single-use identifier the Relay echoes back through the browser.
+   *
+   * It is also the transaction's key, so the browser carries exactly one opaque value: the state the page
+   * compares against, the value the Relay binds its code to, and the handle this host completes with.
+   */
+  readonly state: string
+  /** PKCE verifier, held only by this host; the Relay is given its S256 challenge. */
+  readonly verifier: string
+  readonly challenge: string
+  /** Relay address this transaction authorizes, normalized. */
+  readonly relay: string
+  /** Host instance the credential will be minted for. */
+  readonly instanceKey: string
+  /** Exact page origin allowed to report the code back. */
+  readonly origin: string
+  /** Epoch milliseconds after which the transaction is refused. */
+  readonly expiresAt: number
+}
+
+/** What one completed transaction hands the redemption step. */
+export interface CompletedOwnerAuthorization {
+  readonly relay: string
+  readonly instanceKey: string
+  readonly verifier: string
+}
+
+/** Outcome of completing a transaction: the verifier and its bindings, or a stable refusal. */
+export type OwnerAuthorizationOutcome =
+  | { readonly ok: true; readonly completed: CompletedOwnerAuthorization }
+  | { readonly ok: false; readonly code: OwnerAuthorizationRefusal }
+
+/** One authorization's lifetime; short because the owner completes it in the same browser session. */
+const DEFAULT_TTL_MS = 5 * 60 * 1000
+
+/** `base64url` without padding, the encoding PKCE specifies for both values. */
+function base64url(value: Buffer): string {
+  return value.toString('base64').replaceAll('+', '-').replaceAll('/', '_').replaceAll('=', '')
+}
+
+/**
+ * The transactions this host has begun and not yet completed.
+ *
+ * Held in memory and keyed by id: a restart invalidates pending authorizations, which the owner retries
+ * from the browser rather than the host resurrecting one it can no longer vouch for.
+ */
+export class OwnerAuthorizations {
+  private readonly pending = new Map<string, OwnerAuthorizationTransaction>()
+
+  /**
+   * @param options - Clock and lifetime overrides for tests; production uses the defaults.
+   */
+  constructor(private readonly options: {
+    readonly ttlMs?: number
+    readonly now?: () => number
+  } = {}) {}
+
+  /** The clock this store judges expiry against. */
+  private now(): number {
+    return (this.options.now ?? Date.now)()
+  }
+
+  /**
+   * Begin one authorization for a Relay address, a host instance, and the page that asked.
+   *
+   * The verifier stays here and only its S256 challenge is published, so a code intercepted in transit is
+   * useless without this process.
+   * @param input - Relay address, host instance, and the exact page origin that began it.
+   * @returns The transaction, whose id and state the browser carries and whose challenge the Relay gets.
+   */
+  begin(input: { readonly relay: string; readonly instanceKey: string; readonly origin: string }): OwnerAuthorizationTransaction {
+    this.sweep()
+    const verifier = base64url(randomBytes(32))
+    const transaction: OwnerAuthorizationTransaction = {
+      state: base64url(randomBytes(16)),
+      verifier,
+      challenge: base64url(createHash('sha256').update(verifier).digest()),
+      relay: input.relay,
+      instanceKey: input.instanceKey,
+      origin: input.origin,
+      expiresAt: this.now() + (this.options.ttlMs ?? DEFAULT_TTL_MS),
+    }
+    this.pending.set(transaction.state, transaction)
+    return transaction
+  }
+
+  /**
+   * Complete one authorization, checking every binding the browser could have altered.
+   *
+   * The transaction is consumed only by a completion that passes: a mismatched state, origin, relay, or
+   * instance leaves it pending so the owner can retry the same attempt.
+   * @param input - The state and code the page reported, the page's own origin, and the Relay address and
+   *   host instance in force right now.
+   * @returns The verifier with its bindings, or the stable code naming the refusal.
+   */
+  complete(input: {
+    readonly state: string
+    readonly origin: string | undefined
+    readonly relay: string
+    readonly instanceKey: string
+  }): OwnerAuthorizationOutcome {
+    const transaction = this.pending.get(input.state)
+    if (transaction === undefined) return { ok: false, code: 'unknown-transaction' }
+    if (this.now() >= transaction.expiresAt) {
+      this.pending.delete(transaction.state)
+      return { ok: false, code: 'expired' }
+    }
+    if (input.origin === undefined || input.origin !== transaction.origin) {
+      return { ok: false, code: 'origin-mismatch' }
+    }
+    if (input.relay !== transaction.relay) return { ok: false, code: 'relay-changed' }
+    if (input.instanceKey !== transaction.instanceKey) return { ok: false, code: 'instance-changed' }
+    this.pending.delete(transaction.state)
+    return {
+      ok: true,
+      completed: {
+        relay: transaction.relay,
+        instanceKey: transaction.instanceKey,
+        verifier: transaction.verifier,
+      },
+    }
+  }
+
+  /**
+   * Drop one pending authorization the browser abandoned.
+   *
+   * A cancelled attempt leaves no credential and nothing to redeem: the verifier is gone, so a code
+   * minted for it afterwards can no longer be exchanged.
+   * @param state - The transaction the page reported as cancelled.
+   * @returns True when this host was still waiting for that transaction.
+   */
+  cancel(state: string): boolean {
+    return this.pending.delete(state)
+  }
+
+  /** Drop expired transactions so a long-lived host keeps only what can still complete. */
+  private sweep(): void {
+    const now = this.now()
+    for (const [id, transaction] of this.pending) {
+      if (now >= transaction.expiresAt) this.pending.delete(id)
+    }
+  }
+}
+
+/**
+ * The URL a browser opens, on the Relay's own origin, to sign in and then confirm this authorization.
+ * @param input - Relay address, transaction values, and the page origin the Relay may report back to.
+ * @returns The absolute authorization URL.
+ */
+export function ownerAuthorizeUrl(input: {
+  readonly relay: string
+  readonly state: string
+  readonly challenge: string
+  readonly instanceKey: string
+  readonly origin: string
+}): string {
+  const url = new URL(`${input.relay}/__liveshare/owner-authorize`)
+  url.searchParams.set('state', input.state)
+  url.searchParams.set('code_challenge', input.challenge)
+  url.searchParams.set('instance', input.instanceKey)
+  url.searchParams.set('origin', input.origin)
+  return url.href
+}
diff --git a/packages/experimental/liveshare/src/host/owner-credential-file.ts b/packages/experimental/liveshare/src/host/owner-credential-file.ts
new file mode 100644
index 0000000000..fa9e463c13
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/owner-credential-file.ts
@@ -0,0 +1,148 @@
+/** Owner credential kept beside the owner state file, bound to one Relay address. */
+
+import { mkdirSync, readFileSync, renameSync, rmSync, writeFileSync } from 'node:fs'
+import { dirname } from 'node:path'
+import type { OwnerIdentityState } from '../owner-identity.ts'
+import { fromBase64Url } from './base64-url.ts'
+
+/** One stored credential and the Relay address it was issued for. */
+export interface StoredOwnerCredential {
+  /** Relay base URL, normalized, the credential is bound to. */
+  readonly relay: string
+  readonly credential: string
+  /** ISO expiry decoded from the credential payload. */
+  readonly expiresAt?: string
+  readonly displayName?: string
+  readonly subjectId?: string
+  /** Provider-issued avatar URL for display; absent when the credential carries none. */
+  readonly avatarUrl?: string
+}
+
+/**
+ * Read the stored credential.
+ * @param file Credential file path.
+ * @returns Stored credential, or undefined when the file is absent or unreadable.
+ */
+export function loadOwnerCredential(file: string): StoredOwnerCredential | undefined {
+  let raw: string
+  try {
+    raw = readFileSync(file, 'utf8')
+  } catch {
+    // An absent credential file is the ordinary first-run state, not a failure.
+    return undefined
+  }
+  try {
+    const parsed: unknown = JSON.parse(raw)
+    if (typeof parsed !== 'object' || parsed === null) return undefined
+    const value = parsed as Record<string, unknown>
+    if (typeof value.relay !== 'string' || value.relay === '') return undefined
+    if (typeof value.credential !== 'string' || value.credential === '') return undefined
+    return {
+      relay: value.relay,
+      credential: value.credential,
+      ...(typeof value.expiresAt === 'string' ? { expiresAt: value.expiresAt } : {}),
+      ...(typeof value.displayName === 'string' ? { displayName: value.displayName } : {}),
+      ...(typeof value.subjectId === 'string' ? { subjectId: value.subjectId } : {}),
+      ...(typeof value.avatarUrl === 'string' && value.avatarUrl !== '' ? { avatarUrl: value.avatarUrl } : {}),
+    }
+  } catch {
+    // A corrupt credential file is treated as no credential: the owner re-verifies instead.
+    return undefined
+  }
+}
+
+/**
+ * Persist one credential with owner-only permissions.
+ * @param file Credential file path.
+ * @param value Credential and the Relay address it belongs to.
+ */
+export function saveOwnerCredential(file: string, value: StoredOwnerCredential): void {
+  mkdirSync(dirname(file), { recursive: true })
+  const temporary = `${file}.tmp`
+  writeFileSync(temporary, JSON.stringify(value, null, 2), { mode: 0o600 })
+  renameSync(temporary, file)
+}
+
+/**
+ * Read the identity facts out of a credential without verifying its signature.
+ *
+ * The Relay is the only party that can verify a credential, so these facts exist to report status
+ * and expiry to the local browser; they never authorize anything by themselves.
+ * @param credential Credential token exactly as stored.
+ * @returns Decoded payload fields, or undefined when the token is not a signed payload.
+ */
+export function decodeOwnerCredential(
+  credential: string,
+): {
+  readonly expiresAt?: string
+  readonly displayName?: string
+  readonly subjectId?: string
+  readonly avatarUrl?: string
+} | undefined {
+  const dot = credential.lastIndexOf('.')
+  if (dot <= 0) return undefined
+  let payload: unknown
+  try {
+    payload = JSON.parse(fromBase64Url(credential.slice(0, dot)).toString('utf8'))
+  } catch {
+    return undefined
+  }
+  if (typeof payload !== 'object' || payload === null) return undefined
+  const value = payload as Record<string, unknown>
+  const expiresAt = typeof value.expiresAt === 'number' && Number.isFinite(value.expiresAt)
+    ? new Date(value.expiresAt).toISOString()
+    : undefined
+  return {
+    ...(expiresAt === undefined ? {} : { expiresAt }),
+    ...(typeof value.displayName === 'string' && value.displayName !== ''
+      ? { displayName: value.displayName }
+      : {}),
+    ...(typeof value.subjectId === 'string' && value.subjectId !== ''
+      ? { subjectId: value.subjectId }
+      : {}),
+    ...(typeof value.avatarUrl === 'string' && value.avatarUrl !== ''
+      ? { avatarUrl: value.avatarUrl }
+      : {}),
+  }
+}
+
+/**
+ * Read the horizon one Relay reported for a credential it accepted.
+ *
+ * The signed expiry inside a credential is the horizon the Relay wrote when it minted the token, and
+ * the login behind it can be renewed past that instant. A response carrying the horizon the Relay
+ * currently grants is therefore the authority, and the signed value is only its floor.
+ * @param reported Value of the Relay's `ownerCredentialExpiresAt` response field.
+ * @returns ISO time the Relay reported, or undefined when it reported none this host can read.
+ */
+export function reportedOwnerCredentialExpiry(reported: unknown): string | undefined {
+  if (typeof reported !== 'string' || reported === '') return undefined
+  const parsed = Date.parse(reported)
+  return Number.isFinite(parsed) ? new Date(parsed).toISOString() : undefined
+}
+
+/**
+ * Report the credential state for one Relay address.
+ * @param stored Credential currently on disk, if any.
+ * @param relay Relay base URL this host is about to use.
+ * @param now Current epoch milliseconds.
+ * @returns Status of the credential for that address.
+ */
+export function ownerCredentialState(
+  stored: StoredOwnerCredential | undefined,
+  relay: string,
+  now: number,
+): OwnerIdentityState {
+  if (stored === undefined || stored.relay !== relay) return 'unverified'
+  if (stored.expiresAt === undefined) return 'verified'
+  const expiresAt = Date.parse(stored.expiresAt)
+  return Number.isFinite(expiresAt) && expiresAt > now ? 'verified' : 'expired'
+}
+
+/**
+ * Delete the stored credential.
+ * @param file Credential file path.
+ */
+export function clearOwnerCredential(file: string): void {
+  rmSync(file, { force: true })
+}
diff --git a/packages/experimental/liveshare/src/host/owner-http-routes.ts b/packages/experimental/liveshare/src/host/owner-http-routes.ts
new file mode 100644
index 0000000000..ec23f749ad
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/owner-http-routes.ts
@@ -0,0 +1,274 @@
+/**
+ * The owner sign-in HTTP surface: the four same-origin routes the browser still posts to.
+ *
+ * Share management is the `liveshareShares` Remote, so these routes only begin and redeem the
+ * owner's Relay authorization and store the credential it returns; every share-management side
+ * effect reaches the Gateway through the Remote instead.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/owner-http-routes
+ */
+
+import type { Context } from '@deepseek-ai/cordis'
+import { type OwnerIdentityStatus } from '../owner-identity.ts'
+import {
+  OwnerAuthorizations,
+  ownerAuthorizeUrl,
+  type OwnerAuthorizationRefusal,
+} from './owner-authorization.ts'
+import {
+  decodeOwnerCredential,
+  saveOwnerCredential,
+  type StoredOwnerCredential,
+} from './owner-credential-file.ts'
+import type { TunnelSupervision } from './tunnel-supervision.ts'
+import { isRecord, json, readJsonBody } from './wire-json.ts'
+
+/** One owner operation's captured Relay, revision, and host instance. */
+export interface OwnerOperation {
+  /** Address in force when the operation was captured; absent while the owner has saved none. */
+  readonly relay: string | undefined
+  readonly relayRevision: number
+  readonly instanceKey: string
+}
+
+/** Host state the owner sign-in routes read. */
+export interface OwnerHttpRouteDeps {
+  /** Host Connection service the routes are registered on. */
+  readonly connection: Context['connection']
+  /** Worker registration, credential state, and Relay probes. */
+  readonly tunnel: TunnelSupervision
+  /** Capture the Relay, revision, and instance an operation began under. */
+  readonly captureOwnerOperation: () => OwnerOperation
+  /** Whether one captured operation still describes this host's Relay and instance. */
+  readonly ownerOperationCurrent: (operation: OwnerOperation) => boolean
+  /** Owner authorizations this host began and is waiting to redeem. */
+  readonly ownerAuthorizations: OwnerAuthorizations
+  /** Owner credential file, written when the Relay issues a credential. */
+  readonly ownerCredentialFile: string
+  /** Credential this host holds now. */
+  readonly storedCredential: () => StoredOwnerCredential | undefined
+  /** Replace the credential this host holds. */
+  readonly setStoredCredential: (credential: StoredOwnerCredential) => void
+  /** Whether this host has been disposed. */
+  readonly disposed: () => boolean
+}
+
+/**
+ * The owner-facing code for one refused completion.
+ *
+ * The browser shows localized copy per code, so the mapping is stable and narrow: a transaction this host
+ * no longer holds reads as expired (finish the attempt again), a state or origin that does not match the
+ * transaction reads as a mismatch, and a changed Relay or host instance is the same mismatch.
+ * @param refusal - The refusal the transaction store reported.
+ * @returns The stable code the Owner client maps to copy.
+ */
+function ownerLoginFailureCode(refusal: OwnerAuthorizationRefusal): string {
+  if (refusal === 'origin-mismatch' || refusal === 'relay-changed' || refusal === 'instance-changed') {
+    return 'owner-login-mismatch'
+  }
+  return 'owner-login-expired'
+}
+
+/**
+ * Register the owner sign-in routes on this host's Connection.
+ * @param deps - Connection, worker channel, and owner credential state.
+ */
+export function registerOwnerHttpRoutes(deps: OwnerHttpRouteDeps): void {
+  const connection = deps.connection
+  const tunnel = deps.tunnel
+  const captureOwnerOperation = deps.captureOwnerOperation
+  const ownerOperationCurrent = deps.ownerOperationCurrent
+  const ownerAuthorizations = deps.ownerAuthorizations
+  const ownerCredentialFile = deps.ownerCredentialFile
+  const currentCredential = deps.storedCredential
+  const setStoredCredential = deps.setStoredCredential
+  const disposed = deps.disposed
+
+  /**
+   * Store one Relay-issued credential and claim this host's existing shares with it.
+   *
+   * Shared by the two ways a credential arrives — posted by the browser, or redeemed here from an
+   * authorization code — so both attribute the same shares the same way. Synchronous persistence is
+   * the commit point: later probes and claims use this credential and Relay even if another operation
+   * commits afterwards. A changed operation is refused before persistence, never rebound to a new Relay.
+   * @param operation - Captured Relay, configuration revision, and host instance.
+   * @param credential - Signed credential the Relay issued for this host's instance.
+   * @returns This operation's identity status, or the mismatch or storage failure to report.
+   */
+  const storeOwnerCredential = async (operation: OwnerOperation, credential: string): Promise<
+    | { readonly ok: true; readonly status: OwnerIdentityStatus }
+    | { readonly ok: false; readonly code: string }
+  > => {
+    // A credential posted with no address in force belongs to a configuration this host no longer has,
+    // so it is refused as the mismatch it is rather than stored against an invented address.
+    if (!ownerOperationCurrent(operation)) return { ok: false, code: 'owner-login-mismatch' }
+    const relay = operation.relay
+    if (relay === undefined) return { ok: false, code: 'owner-login-mismatch' }
+    const held = currentCredential()
+    const previous = held?.relay === relay ? held.expiresAt : undefined
+    const decoded = decodeOwnerCredential(credential) ?? {}
+    const committed: StoredOwnerCredential = { relay, credential, ...decoded }
+    try {
+      saveOwnerCredential(ownerCredentialFile, committed)
+    } catch {
+      return { ok: false, code: 'owner-credential-unavailable' }
+    }
+    setStoredCredential(committed)
+    delete tunnel.factsFor(relay).claim
+    await tunnel.probeRelayCredentialSupport(relay)
+    const claim = await tunnel.claimOwnedShares(relay, tunnel.credentialForRelay(relay, committed))
+    // The credential in hand is now the one a registration presents, so every share this host holds
+    // for that address that a refusal left offline reaches the Relay again on its own.
+    tunnel.reregisterOfflineShares(relay, committed)
+    // A claim may have adopted the horizon the Relay reported for this very token, which replaces the
+    // record with an equal one; the status therefore reports whichever record is current for this Relay.
+    const heldAfterCommit = currentCredential()
+    /* v8 ignore next -- a claim adoption rewrites only the horizon of the same credential. */
+    const effective = heldAfterCommit?.credential === committed.credential ? heldAfterCommit : committed
+    if (!disposed() && currentCredential() === effective) tunnel.factsFor(relay).claim = claim
+    const renewed = previous === undefined
+      || (effective.expiresAt !== undefined && effective.expiresAt > previous)
+    return { ok: true, status: tunnel.ownerIdentityStatus(relay, { renewed, claim }, effective) }
+  }
+
+  connection.fetch.register({
+    path: '/api/liveshare.ownerCredential',
+    methods: ['POST'],
+    requestBody: 'buffered',
+    fetch: async (request) => {
+      const operation = captureOwnerOperation()
+      const input = await readJsonBody(request)
+      if (!isRecord(input) || typeof input.credential !== 'string' || input.credential === '') {
+        return json({ error: 'invalid-credential' }, 400)
+      }
+      const stored = await storeOwnerCredential(operation, input.credential)
+      return stored.ok
+        ? json(stored.status, 200)
+        : json({ error: stored.code }, stored.code === 'owner-login-mismatch' ? 403 : 500)
+    },
+  })
+
+  /**
+   * Register one owner route whose body is a JSON object, refusing every other body with one answer.
+   *
+   * The two login routes below read different fields out of the same envelope, so the reading and the
+   * refusal are written once here rather than repeated per route.
+   * @param path - Route path.
+   * @param handle - Handler reading the parsed object and answering the request.
+   */
+  const registerOwnerJsonRoute = (
+    path: string,
+    handle: (input: Record<string, unknown>, request: Request) => Promise<Response> | Response,
+  ): void => {
+    connection.fetch.register({
+      path,
+      methods: ['POST'],
+      requestBody: 'buffered',
+      fetch: async (request) => {
+        const input = await readJsonBody(request)
+        if (!isRecord(input)) return json({ error: 'invalid-json' }, 400)
+        return handle(input, request)
+      },
+    })
+  }
+
+  // The owner authorizes this host without the credential ever passing through the browser: the page
+  // begins a transaction here, the Relay signs the owner in on its own origin and issues a single-use
+  // code, and this host redeems that code with the verifier only it holds.
+  connection.fetch.register({
+    path: '/api/liveshare.ownerLoginStart',
+    methods: ['POST'],
+    requestBody: 'buffered',
+    fetch: async (request) => {
+      const origin = request.headers.get('origin')
+      if (origin === null || origin === '') {
+        return json({ error: 'owner-login-unavailable', reason: 'origin-required' }, 400)
+      }
+      const operation = captureOwnerOperation()
+      const { instanceKey } = operation
+      const relay = operation.relay
+      // Signing in is signing in at an address: there is nothing to authorize before the owner saves one.
+      if (relay === undefined) {
+        return json({ error: 'owner-login-unavailable', reason: 'relay-required' }, 409)
+      }
+      if (tunnel.factsFor(relay).supportsCredentials === undefined) await tunnel.probeRelayCredentialSupport(relay)
+      if (!ownerOperationCurrent(operation)) return json({ error: 'owner-login-mismatch' }, 403)
+      if (tunnel.factsFor(relay).supportsCredentials === false) {
+        return json({ error: 'owner-login-unavailable', reason: 'relay-upgrade-required' }, 409)
+      }
+      const transaction = ownerAuthorizations.begin({
+        relay,
+        instanceKey,
+        origin,
+      })
+      return json({
+        state: transaction.state,
+        expiresAt: new Date(transaction.expiresAt).toISOString(),
+        // The popup posts from the Relay's own origin, which is what the page must compare against; the
+        // Owner page's origin stays on this side, bound to the transaction and never published.
+        messageOrigin: new URL(relay).origin,
+        authorizeUrl: ownerAuthorizeUrl({
+          relay,
+          state: transaction.state,
+          challenge: transaction.challenge,
+          instanceKey: transaction.instanceKey,
+          origin,
+        }),
+      }, 200)
+    },
+  })
+
+  registerOwnerJsonRoute('/api/liveshare.ownerLoginRedeem', async (input, request) => {
+    const state = typeof input.state === 'string' ? input.state : ''
+    const code = typeof input.code === 'string' ? input.code : ''
+    if (state === '' || code === '') {
+      return json({ error: 'invalid-completion' }, 400)
+    }
+    const operation = captureOwnerOperation()
+    const relay = operation.relay
+    // No transaction can have been started without an address, so a completion arriving now is stale.
+    if (relay === undefined) return json({ error: 'owner-login-mismatch' }, 403)
+    const outcome = ownerAuthorizations.complete({
+      state,
+      origin: request.headers.get('origin') ?? undefined,
+      relay,
+      instanceKey: operation.instanceKey,
+    })
+    if (!outcome.ok) return json({ error: ownerLoginFailureCode(outcome.code) }, 403)
+    let answer: { readonly credential?: unknown; readonly error?: unknown }
+    try {
+      const response = await fetch(new URL(`${outcome.completed.relay}/__liveshare/owner-credential`), {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        signal: AbortSignal.timeout(10_000),
+        body: JSON.stringify({
+          code,
+          code_verifier: outcome.completed.verifier,
+          instanceKey: outcome.completed.instanceKey,
+        }),
+      })
+      answer = await response.json() as { readonly credential?: unknown; readonly error?: unknown }
+    } catch {
+      // An unreachable Relay leaves the owner unverified; the browser may begin another attempt.
+      return json({ error: 'owner-login-failed' }, 502)
+    }
+    // The transaction and Relay code are spent; a changed configuration requires a fresh authorization.
+    if (!ownerOperationCurrent(operation)) return json({ error: 'owner-login-mismatch' }, 403)
+    if (typeof answer.credential !== 'string' || answer.credential === '') {
+      const reason = typeof answer.error === 'string' ? answer.error : undefined
+      return json({
+        error: reason === 'code-replayed' ? 'owner-login-replayed' : 'owner-login-failed',
+        ...(reason === undefined ? {} : { reason }),
+      }, 502)
+    }
+    // The operation was already checked after the Relay answered, so only a storage failure remains.
+    const stored = await storeOwnerCredential(operation, answer.credential)
+    return stored.ok ? json(stored.status, 200) : json({ error: stored.code }, 500)
+  })
+
+  registerOwnerJsonRoute('/api/liveshare.ownerLoginCancel', (input) => {
+    const state = typeof input.state === 'string' ? input.state : ''
+    if (state === '') return json({ error: 'invalid-cancel' }, 400)
+    // Best effort by design: an attempt this host no longer holds is already unredeemable.
+    return json({ cancelled: ownerAuthorizations.cancel(state) }, 200)
+  })
+}
diff --git a/packages/experimental/liveshare/src/host/owner-persistence.ts b/packages/experimental/liveshare/src/host/owner-persistence.ts
new file mode 100644
index 0000000000..37e960ae7f
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/owner-persistence.ts
@@ -0,0 +1,283 @@
+/**
+ * Owner state file: the Relay override, the shares this host restores, and the Relay rows it owes.
+ *
+ * One JSON document holds everything this host must survive a restart with, and every write is
+ * serialized per file so the newest content is the one that lands last.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/owner-persistence
+ */
+
+import { randomBytes } from 'node:crypto'
+import { base64Url } from './base64-url.ts'
+import { existsSync, readFileSync } from 'node:fs'
+import { writeFileAtomic } from '@deepseek-ai/dsh-atomic-write'
+import type { ShareAccessSelection } from '../share-api-types.ts'
+import type { ViewerSessionMode } from './fork-policy.ts'
+import { normalizeRelayUrl } from './relay-url.ts'
+import type { OwnerShare, ShareAccessSummary } from './owner-types.ts'
+import type { ViewerCapabilityGroup } from './viewer-declarations.ts'
+import { isRecord } from './wire-json.ts'
+
+
+/** One share as the owner state file stores it. */
+export interface PersistedOwnerShare {
+  readonly shareId: string
+  readonly sessionId: string
+  readonly sessionTitle: string
+  /** Mode this share was created with; the retired `approval` spelling reads back as `selected`. */
+  readonly accessMode: 'open' | 'selected' | 'approval'
+  /** Relay this share was published to; a record without one cannot be restored. */
+  readonly relay: string
+  readonly gatewayToken: string
+  readonly allowedSubjectIds: readonly string[]
+  readonly access?: ShareAccessSummary
+  readonly createdAt: string
+  readonly expiresAt?: string
+  /**
+   * Whether this share lets an admitted viewer fork it.
+   *
+   * Absent on every share written before the switch was stored on its own, and such a record reads as
+   * off at the boundary that loads it.
+   */
+  readonly allowsFork?: boolean
+  /**
+   * Tier this share was created with.
+   *
+   * Absent in files written before tiers existed, and such a record loads as `view`.
+   */
+  readonly sessionMode?: ViewerSessionMode
+  /**
+   * Plugin endpoints this share exposed to its viewers when it was written.
+   *
+   * Absent on every share written before the capability existed, and absent means none: an upgrade never
+   * exposes a plugin endpoint the owner had no chance to select.
+   */
+  readonly viewerCapabilities?: readonly ViewerCapabilityGroup[]
+}
+
+/** Owner state read from disk: the persisted Relay override, every restorable share, and every Relay row still owed. */
+export interface LoadedOwnerState {
+  readonly relayUrl?: string
+  readonly instanceId: string
+  readonly shares: Map<string, OwnerShare>
+  readonly pendingRemovals: Map<string, PendingRelayRemoval>
+}
+
+/**
+ * One Relay row this host stopped but has not deleted there yet.
+ *
+ * The share is gone from this host already, and the row and the token that deletes it are kept only
+ * until the Relay answers: a stop that landed while the Relay was unreachable is delivered at the
+ * next contact instead of being lost until the row's expiry.
+ */
+export interface PendingRelayRemoval {
+  readonly relay: string
+  readonly shareId: string
+  readonly gatewayToken: string
+}
+
+/**
+ * Read this host's owner state file, creating an empty state when it does not exist.
+ *
+ * Every stored share names the Relay it was published to, and a record without one is invalid: this
+ * build has no configured address to read such a share against, and LiveShare has never shipped a
+ * state file that omits the field.
+ * @param file - Owner state file path.
+ * @returns The loaded saved address, instance id, shares, and owed Relay rows.
+ */
+export function loadOwnerState(file: string): LoadedOwnerState {
+  if (!existsSync(file)) return { instanceId: newInstanceId(), shares: new Map(), pendingRemovals: new Map() }
+  let parsed: unknown
+  try {
+    parsed = JSON.parse(readFileSync(file, 'utf8'))
+  } catch {
+    throw new Error(`liveshare-share-host: invalid owner state file ${file}`)
+  }
+  if (!isRecord(parsed) || !Array.isArray(parsed.shares)) {
+    throw new Error(`liveshare-share-host: invalid owner state file ${file}`)
+  }
+  const relayUrl = persistedRelayUrl(parsed.relayUrl, file)
+  const persistedInstanceId = (parsed as { instanceId?: unknown }).instanceId
+  const instanceId = typeof persistedInstanceId === 'string' && persistedInstanceId !== ''
+    ? persistedInstanceId
+    : newInstanceId()
+  const shares = new Map<string, OwnerShare>(parsed.shares.map((value): [string, OwnerShare] => {
+    if (!isPersistedOwnerShare(value)) {
+      throw new Error(`liveshare-share-host: invalid owner state file ${file}`)
+    }
+    const relay = normalizeRelayUrl(value.relay)
+    return [value.shareId, {
+      shareId: value.shareId,
+      sessionId: value.sessionId,
+      sessionTitle: value.sessionTitle,
+      accessMode: storedAccessMode(value.accessMode),
+      link: `${relay}/?shareId=${encodeURIComponent(value.shareId)}`,
+      relay,
+      gatewayToken: value.gatewayToken,
+      allowedSubjectIds: [...value.allowedSubjectIds],
+      ...(value.access === undefined ? {} : { access: { ...value.access, mode: storedAccessMode(value.access.mode) } }),
+      revision: 1,
+      createdAt: value.createdAt,
+      ...(value.expiresAt === undefined ? {} : { expiresAt: value.expiresAt }),
+      // A record with no tier reads back as `view`; the record's own switch decides forking.
+      sessionMode: value.sessionMode === 'write' ? 'write' : 'view',
+      allowsFork: value.allowsFork === true,
+      ...(value.viewerCapabilities === undefined ? {} : { viewerCapabilities: value.viewerCapabilities }),
+      online: false,
+    }]
+  }))
+  const pendingRemovals = new Map<string, PendingRelayRemoval>()
+  const persistedRemovals = (parsed as { pendingRemovals?: unknown }).pendingRemovals
+  for (const value of Array.isArray(persistedRemovals) ? persistedRemovals : []) {
+    if (!isPendingRelayRemoval(value)) {
+      throw new Error(`liveshare-share-host: invalid owner state file ${file}`)
+    }
+    pendingRemovals.set(value.shareId, {
+      relay: normalizeRelayUrl(value.relay),
+      shareId: value.shareId,
+      gatewayToken: value.gatewayToken,
+    })
+  }
+  return { instanceId, ...(relayUrl === undefined ? {} : { relayUrl }), shares, pendingRemovals }
+}
+
+/**
+ * Write this host's owner state, serialized per file so the newest content lands last.
+ * @param file - Owner state file path.
+ * @param relayUrl - Relay override currently in force, when the owner set one.
+ * @param instanceId - Identity of this owner instance.
+ * @param shares - Shares to store.
+ * @param pendingRemovals - Relay rows this host still owes a deletion.
+ * @returns Completion of this write, including any failure the caller reports.
+ */
+export function writeOwnerState(
+  file: string,
+  relayUrl: string | undefined,
+  instanceId: string,
+  shares: ReadonlyMap<string, OwnerShare>,
+  pendingRemovals: ReadonlyMap<string, PendingRelayRemoval>,
+): Promise<void> {
+  const persisted: PersistedOwnerShare[] = [...shares.values()].map(share => ({
+    shareId: share.shareId,
+    sessionId: share.sessionId,
+    sessionTitle: share.sessionTitle,
+    accessMode: share.accessMode,
+    relay: share.relay,
+    gatewayToken: share.gatewayToken,
+    allowedSubjectIds: [...share.allowedSubjectIds],
+    ...(share.access === undefined ? {} : { access: share.access }),
+    createdAt: share.createdAt,
+    ...(share.expiresAt === undefined ? {} : { expiresAt: share.expiresAt }),
+    ...(share.allowsFork ? { allowsFork: true } : {}),
+    sessionMode: share.sessionMode,
+    ...(share.viewerCapabilities === undefined ? {} : { viewerCapabilities: share.viewerCapabilities }),
+  }))
+  const removals = [...pendingRemovals.values()].map(entry => ({
+    relay: entry.relay,
+    shareId: entry.shareId,
+    gatewayToken: entry.gatewayToken,
+  }))
+  const content = JSON.stringify({
+    instanceId,
+    ...(relayUrl === undefined ? {} : { relayUrl }),
+    shares: persisted,
+    ...(removals.length === 0 ? {} : { pendingRemovals: removals }),
+  }, null, 2)
+  // The map holds only chains whose failures are already absorbed below, so the next write chained
+  // on them can never observe a rejection.
+  const write = (ownerStateWrites.get(file) ?? Promise.resolve())
+    .then(() => writeFileAtomic(file, content, { mode: 0o600, dirMode: 0o700 }))
+  ownerStateWrites.set(file, write.catch(() => undefined))
+  return write
+}
+
+/** One state file's in-flight writes, so the newest content is the one that lands last. */
+const ownerStateWrites = new Map<string, Promise<void>>()
+
+/**
+ * Whether one stored value is a Relay row this host still owes a deletion.
+ * @param value - Parsed state file entry.
+ * @returns True when the entry names a Relay, a share, and the token that deletes its row.
+ */
+function isPendingRelayRemoval(value: unknown): value is PendingRelayRemoval {
+  return isRecord(value)
+    && typeof value.relay === 'string' && value.relay !== ''
+    && typeof value.shareId === 'string' && value.shareId !== ''
+    && typeof value.gatewayToken === 'string' && value.gatewayToken !== ''
+}
+
+/** One owner DSH instance id, minted on first use and kept in the owner state file. */
+function newInstanceId(): string {
+  return base64Url(randomBytes(9))
+}
+
+function persistedRelayUrl(value: unknown, file: string): string | undefined {
+  if (value === undefined) return undefined
+  if (typeof value !== 'string' || value === '') {
+    throw new Error(`liveshare-share-host: invalid owner state file ${file}`)
+  }
+  return normalizeRelayUrl(value)
+}
+
+/**
+ * Whether one stored value is a group of plugin endpoints a share exposed.
+ *
+ * The names are only checked as strings: the `share-viewer` policy intersects them with the plugins'
+ * live declarations, so a name nothing declares can never expose an endpoint.
+ * @param value - Parsed state file entry.
+ * @returns True when the entry names a plugin and its endpoint lists.
+ */
+function isViewerCapabilityGroup(value: unknown): value is ViewerCapabilityGroup {
+  return isRecord(value)
+    && typeof value.plugin === 'string' && value.plugin !== ''
+    && Array.isArray(value.readable) && value.readable.every(action => typeof action === 'string')
+    && Array.isArray(value.writable) && value.writable.every(action => typeof action === 'string')
+}
+
+/**
+ * Read the mode a state file stored, mapping the retired `approval` spelling to `selected`.
+ * @param mode - Access mode as the state file recorded it.
+ * @returns The mode this build's runtime and wire surfaces use.
+ */
+export function storedAccessMode(mode: 'open' | 'selected' | 'approval'): 'open' | 'selected' {
+  return mode === 'approval' ? 'selected' : mode
+}
+
+function isPersistedOwnerShare(value: unknown): value is PersistedOwnerShare {
+  return isRecord(value)
+    && typeof value.shareId === 'string' && value.shareId !== ''
+    && typeof value.sessionId === 'string'
+    && typeof value.sessionTitle === 'string'
+    && (value.accessMode === 'open' || value.accessMode === 'selected' || value.accessMode === 'approval')
+    && typeof value.relay === 'string' && value.relay !== ''
+    && typeof value.gatewayToken === 'string' && value.gatewayToken !== ''
+    && Array.isArray(value.allowedSubjectIds)
+    && value.allowedSubjectIds.every(subject => typeof subject === 'string')
+    && (value.access === undefined || isShareAccessSummary(value.access))
+    && typeof value.createdAt === 'string'
+    && (value.expiresAt === undefined || typeof value.expiresAt === 'string')
+    && (value.allowsFork === undefined || typeof value.allowsFork === 'boolean')
+    && (value.viewerCapabilities === undefined
+      || (Array.isArray(value.viewerCapabilities) && value.viewerCapabilities.every(isViewerCapabilityGroup)))
+    && (value.sessionMode === undefined || value.sessionMode === 'view' || value.sessionMode === 'write')
+}
+
+function isShareAccessSummary(value: unknown): value is ShareAccessSummary {
+  if (!isRecord(value)) return false
+  return (value.mode === 'open' || value.mode === 'selected' || value.mode === 'approval')
+    && Array.isArray(value.selected)
+    && value.selected.every(isShareAccessSelection)
+    && Array.isArray(value.deploymentAllowedSubjectIds)
+    && value.deploymentAllowedSubjectIds.every(subject => typeof subject === 'string')
+    && Array.isArray(value.shareAllowedSubjectIds)
+    && value.shareAllowedSubjectIds.every(subject => typeof subject === 'string')
+    && typeof value.broadenedByDeploymentSubjects === 'boolean'
+    && value.identityKeyAcl === true
+}
+
+function isShareAccessSelection(value: unknown): value is ShareAccessSelection {
+  return isRecord(value)
+    && typeof value.providerId === 'string' && value.providerId !== ''
+    && typeof value.tenantId === 'string' && value.tenantId !== ''
+    && typeof value.subjectId === 'string' && value.subjectId !== ''
+    && typeof value.identityKey === 'string' && value.identityKey !== ''
+}
diff --git a/packages/experimental/liveshare/src/host/owner-share-operations.ts b/packages/experimental/liveshare/src/host/owner-share-operations.ts
new file mode 100644
index 0000000000..3d34f6644a
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/owner-share-operations.ts
@@ -0,0 +1,741 @@
+/**
+ * The twelve owner share-management operations behind the `liveshareShares` Remote.
+ *
+ * Each method owns one operation's business order; the Remote service exposes it without a second
+ * implementation. Failures are thrown as `RemoteError` values with a `liveshareShares/` code, which
+ * the Gateway carries to the Client unchanged.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/share-operations-impl
+ */
+
+import { randomBytes } from 'node:crypto'
+import { base64Url } from './base64-url.ts'
+import { RemoteError } from '@deepseek-ai/dsh-typert-protocol'
+import { isJsonValue, type JsonValue } from '@deepseek-ai/dsh-util-values'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type {
+  OwnerRelayState,
+  OwnerShareView,
+  ShareAccess,
+  ShareAudit,
+  ShareAuditEntryView,
+} from '../share-api-types.ts'
+import type { ForkRegistry } from './fork-registry.ts'
+import type { StoredOwnerCredential } from './owner-credential-file.ts'
+import type { PendingRelayRemoval } from './owner-persistence.ts'
+import { storedAccessMode } from './owner-persistence.ts'
+import { normalizeRelayUrl } from './relay-url.ts'
+import type { RelayAuthority } from './relay-authority.ts'
+import type { OwnerShare } from './owner-types.ts'
+import type { SourceAccessApplier } from './source-access.ts'
+import type { OwnerShareOperations } from './share-operations.ts'
+import type { TunnelSupervision } from './tunnel-supervision.ts'
+import { readViewerCapabilitySelection } from './viewer-capability-selection.ts'
+import type { ViewerDeclarationsSurface } from './viewer-declarations.ts'
+import type { ViewerReadService } from './viewer-read.ts'
+import { isRecord } from './wire-json.ts'
+
+/** Longest share lifetime an owner may set from the dialog; longer links need a fresh decision. */
+const MAX_SHARE_TTL_MINUTES = 7 * 24 * 60
+
+/** Media type an answer carries when the Relay states none, and the unavailable answer's own. */
+const DEFAULT_CONTENT_TYPE = 'application/json; charset=utf-8'
+
+/** One forwarded Relay answer, detached from the Response so its fields are stated once. */
+interface RelayRead {
+  readonly ok: boolean
+  readonly status: number
+  readonly contentType: string
+  readonly text: string
+}
+
+/**
+ * Forward one audit read to the Relay that carries a share, preserving its status and media type.
+ * @param share - Share whose audit is read.
+ * @param relayPath - Relay path to read, relative to the share's Relay.
+ * @returns The Relay's answer, or the unavailable answer when it cannot be reached.
+ */
+async function relayReadThroughShare(share: OwnerShare, relayPath: string): Promise<RelayRead> {
+  const relayUrl = new URL(`${share.relay}/${relayPath}`)
+  relayUrl.searchParams.set('shareId', share.shareId)
+  try {
+    const response = await fetch(relayUrl, {
+      headers: { authorization: `Bearer ${share.gatewayToken}` },
+    })
+    return {
+      ok: response.ok,
+      status: response.status,
+      contentType: response.headers.get('content-type') ?? DEFAULT_CONTENT_TYPE,
+      text: await response.text(),
+    }
+  } catch {
+    return { ok: false, status: 502, contentType: DEFAULT_CONTENT_TYPE, text: JSON.stringify({ error: 'relay-unavailable' }) }
+  }
+}
+
+/**
+ * Parse one Relay audit answer into the owner-facing record.
+ * @param body - Relay response body, as text.
+ * @returns The audit record, or undefined when the body is not an audit answer.
+ */
+function readShareAudit(body: string): ShareAudit | undefined {
+  if (body === '') return undefined
+  let parsed: unknown
+  try {
+    parsed = JSON.parse(body)
+  } catch {
+    return undefined
+  }
+  if (!isRecord(parsed) || !Array.isArray(parsed.events)) return undefined
+  const events: ShareAuditEntryView[] = []
+  for (const entry of parsed.events) {
+    if (!isRecord(entry)
+      || typeof entry.id !== 'string'
+      || typeof entry.action !== 'string'
+      || typeof entry.createdAt !== 'string') return undefined
+    const detail = entry.detail
+    if (detail !== undefined && !isJsonValue(detail)) return undefined
+    events.push({
+      id: entry.id,
+      action: entry.action,
+      createdAt: entry.createdAt,
+      ...(typeof entry.actor === 'string' ? { actor: entry.actor } : {}),
+      ...(detail === undefined ? {} : { detail: detail as JsonValue }),
+    })
+  }
+  return { events }
+}
+
+/**
+ * Project one stored share onto the owner list's wire record.
+ *
+ * The stored ACL keeps the retired `approval` spelling for old files; the wire maps it to
+ * `selected`, which is the name every current surface uses.
+ * @param share - Share as this host stores it.
+ * @returns The owner-facing record.
+ */
+function ownerShareView(share: OwnerShare): OwnerShareView {
+  return {
+    shareId: share.shareId,
+    sessionId: share.sessionId,
+    sessionTitle: share.sessionTitle,
+    link: share.link,
+    createdAt: share.createdAt,
+    ...(share.expiresAt === undefined ? {} : { expiresAt: share.expiresAt }),
+    allowsFork: share.allowsFork,
+    sessionMode: share.sessionMode,
+    viewerCapabilities: share.viewerCapabilities ?? [],
+    online: share.online,
+    ...(share.access === undefined ? {} : { access: { ...share.access, mode: storedAccessMode(share.access.mode) } }),
+  }
+}
+
+/**
+ * Whether one string is a usable Relay base URL.
+ * @param value Candidate address.
+ * @returns True when the address normalizes.
+ */
+function isRelayAddress(value: string): boolean {
+  try {
+    normalizeRelayUrl(value)
+    return true
+  } catch {
+    return false
+  }
+}
+
+/** Host state the twelve operations read and change. */
+export interface OwnerShareOperationDeps {
+  /** Shares this host publishes. */
+  readonly ownerShares: Map<string, OwnerShare>
+  /** Relay rows this host stopped but has not deleted. */
+  readonly pendingRemovals: Map<string, PendingRelayRemoval>
+  /** Subjects this deployment admits to every share. */
+  readonly allowedSubjectIds: readonly string[]
+  /** Children this host created. */
+  readonly forks: ForkRegistry
+  /** The viewer reader, closed and re-checked by lifecycle changes. */
+  readonly viewerRead: ViewerReadService
+  /** The declaration surface whose live offers a capability selection is accepted against. */
+  readonly viewerDeclarations: ViewerDeclarationsSurface
+  /** Reads and adopted states of the Relay's authority over this host's shares. */
+  readonly relay: RelayAuthority
+  /** Worker registration, expiry timers, and persistence channels. */
+  readonly tunnel: TunnelSupervision
+  /** Current effective Relay address; absent while the owner has saved none. */
+  readonly effectiveRelay: () => string | undefined
+  /** Configured and effective Relay addresses, as the owner UI reads them. */
+  readonly relayState: () => OwnerRelayState
+  /** Set the owner's Relay override, which also sets the effective address. */
+  readonly selectRelayAddress: (override: string | undefined) => void
+  /** Bump the revision that fences owner operations begun under the previous address. */
+  readonly bumpRelayRevision: () => void
+  /** Credential this host holds now. */
+  readonly storedCredential: () => StoredOwnerCredential | undefined
+  /** Persist this host's owner state. */
+  readonly persistOwnerState: () => Promise<void>
+  /** Install the access layer one share's source Session needs. */
+  readonly applySourceAccess: SourceAccessApplier
+  /** Whether one share's source Session carries a usable confined layer. */
+  readonly sourceConfined: (shareId: string) => boolean
+  /** Tell remote access that reader answers may have changed. */
+  readonly accessChanged: () => void
+  /** Stop whatever turn one share's Session is running. */
+  readonly cancelShareTurn: (shareId: string) => void
+  /** Reconcile one Session's sandbox after a share stopped. */
+  readonly reconcileSourceAccess: (sessionId: string) => void
+  /** Stop child work whose grant is narrowed or removed. */
+  readonly cancelChildTurns: (shareId: string, viewer?: ShareRpcActor) => void
+}
+
+/**
+ * Build the twelve owner share-management operations for one host.
+ * @param deps - Shares, Relay authority, worker channel, persistence, and lifecycle callbacks.
+ * @returns The operations the Remote service calls.
+ */
+export function createOwnerShareOperations(deps: OwnerShareOperationDeps): OwnerShareOperations {
+  const ownerShares = deps.ownerShares
+  const pendingRemovals = deps.pendingRemovals
+  const allowedSubjectIds = deps.allowedSubjectIds
+  const forks = deps.forks
+  const viewerRead = deps.viewerRead
+  const viewerDeclarations = deps.viewerDeclarations
+  const relay = deps.relay
+  const tunnel = deps.tunnel
+  const currentCredential = deps.storedCredential
+  const effectiveRelay = deps.effectiveRelay
+  const relayState = deps.relayState
+  const selectRelayAddress = deps.selectRelayAddress
+  const bumpRelayRevision = deps.bumpRelayRevision
+  const persistOwnerState = deps.persistOwnerState
+  const applySourceAccess = deps.applySourceAccess
+  const sourceConfined = deps.sourceConfined
+  const accessChanged = deps.accessChanged
+  const cancelShareTurn = deps.cancelShareTurn
+  const cancelChildTurns = deps.cancelChildTurns
+  const reconcileSourceAccess = deps.reconcileSourceAccess
+
+  /**
+   * The owner operations behind the `liveshareShares` Remote.
+   *
+   * Each method owns one share-management side effect and its order; the Remote service exposes them
+   * without a second implementation.
+   */
+  const operations: OwnerShareOperations = {
+    /**
+     * Order: address gate -> credential gate -> id/token/expiry -> waitForShare -> send(add-share) ->
+     * settlement -> failure remove-share and 502 -> ownerShares.set(online) -> persist (failure removes
+     * the share, clears its expiry, and sends remove-share) -> scheduleShareExpiry -> applySourceAccess.
+     *
+     * The address gate must run first: with no saved address there is no Relay to register with, so the
+     * refusal names that rather than a credential the owner cannot supply either. The credential gate
+     * must run before a token exists; the registration must settle before the
+     * share is stored, or the owner is told about a link the Relay refused; the record must be
+     * durable before its deadline is armed or its layer is installed, or a restart loses a share the
+     * process is already serving; and a failed settle must remove the worker registration before the
+     * answer returns, or the Relay keeps a share this host never stored.
+     */
+    async create(request) {
+      if (request.sessionId === '') {
+        throw new RemoteError('liveshareShares/missing-session-id', 'create requires a sessionId', {})
+      }
+      const sessionTitle = request.sessionTitle === undefined || request.sessionTitle === ''
+        ? request.sessionId
+        : request.sessionTitle
+      const accessMode = request.accessMode ?? 'open'
+      // Nothing can be published before the owner saves an address: the Share dialog is where one is
+      // chosen, and this refusal is what a caller skipping that step reads.
+      const relayAddress = effectiveRelay()
+      if (relayAddress === undefined) {
+        throw new RemoteError('liveshareShares/relay-url-required',
+          'no Liveshare server address is saved; save one in the Share dialog first', {})
+      }
+      // The Relay refuses an unverified publisher, so the owner host does too instead of creating a
+      // share that can never connect and leaving a dead link in the manager.
+      const relay = normalizeRelayUrl(relayAddress)
+      const credential = currentCredential()
+      if (tunnel.credentialForRelay(relay, credential) === undefined) {
+        const identity = tunnel.ownerIdentityStatus(relay, {}, credential)
+        if (identity.state === 'relay-unsupported') {
+          throw new RemoteError('liveshareShares/relay-upgrade-required',
+            `${relay} does not bind owner identity`, { identity })
+        }
+        throw new RemoteError('liveshareShares/owner-login-required',
+          `no verified owner credential is stored for ${relay}`, { identity })
+      }
+      const ttlMinutes = request.ttlMinutes
+      if (ttlMinutes !== undefined && !(Number.isSafeInteger(ttlMinutes)
+        && ttlMinutes > 0 && ttlMinutes <= MAX_SHARE_TTL_MINUTES)) {
+        throw new RemoteError('liveshareShares/invalid-ttl', 'ttlMinutes is outside the allowed range', {})
+      }
+      const expiresAt = ttlMinutes === undefined
+        ? undefined
+        : new Date(Date.now() + ttlMinutes * 60_000).toISOString()
+      const requestedSubjects = request.allowedSubjectIds ?? []
+      const sessionMode = request.sessionMode ?? 'view'
+      const allowsFork = request.allowsFork === true
+      const shareAllowedSubjectIds = [...new Set([...allowedSubjectIds, ...requestedSubjects])]
+      const shareId = base64Url(randomBytes(9))
+      const gatewayToken = base64Url(randomBytes(32))
+      const share = {
+        shareId,
+        sessionId: request.sessionId,
+        sessionTitle,
+        accessMode,
+        relay,
+        gatewayToken,
+        allowedSubjectIds: shareAllowedSubjectIds,
+        ...(expiresAt === undefined ? {} : { expiresAt }),
+        allowsFork,
+        sessionMode,
+      }
+      const access: ShareAccess = {
+        mode: accessMode,
+        selected: [],
+        deploymentAllowedSubjectIds: [...allowedSubjectIds],
+        shareAllowedSubjectIds,
+        broadenedByDeploymentSubjects: allowedSubjectIds.length > 0,
+        identityKeyAcl: true,
+      }
+      const connected = tunnel.waitForShare(shareId, 15_000)
+      tunnel.send({ type: 'add-share', share: tunnel.shareSpec(share, credential) })
+      const result = await connected
+      if (!result.ok) {
+        tunnel.send({ type: 'remove-share', shareId })
+        throw new RemoteError('liveshareShares/relay-unavailable', result.error ?? 'relay-unavailable', {
+          relay,
+          ...(result.error === undefined ? {} : { reason: result.error }),
+        })
+      }
+      // Publication stays on the Relay the worker registered with; an override applies to later shares.
+      const createdAt = new Date().toISOString()
+      const link = `${relay}/?shareId=${encodeURIComponent(shareId)}`
+      ownerShares.set(shareId, {
+        shareId,
+        sessionId: request.sessionId,
+        sessionTitle,
+        accessMode,
+        link,
+        relay,
+        gatewayToken,
+        allowedSubjectIds: shareAllowedSubjectIds,
+        access,
+        revision: 1,
+        createdAt,
+        ...(expiresAt === undefined ? {} : { expiresAt }),
+        allowsFork,
+        sessionMode,
+        online: true,
+      })
+      try {
+        await persistOwnerState()
+      } catch {
+        ownerShares.delete(shareId)
+        tunnel.clearShareExpiry(shareId)
+        tunnel.send({ type: 'remove-share', shareId })
+        throw new RemoteError('liveshareShares/owner-state-unavailable',
+          'the owner state file could not be written', {})
+      }
+      // The share's own deadline is what stops its running turn later, armed from the record it just stored.
+      tunnel.scheduleShareExpiry(ownerShares.get(shareId) as OwnerShare)
+      // A share created in write mode installs its access layer before the owner is told the share exists:
+      // a request admitted on the strength of this answer must never arrive ahead of the layer judging it.
+      await applySourceAccess(ownerShares.get(shareId) as OwnerShare, undefined, 'publish')
+      return { link, shareId, sessionId: request.sessionId, sessionMode, access }
+    },
+
+    /**
+     * Order: reconcileShareTitles -> void flushPendingRemovals() -> each share's readRelayAuthority
+     * (success applyRelayAccess, failure invalidateRelayAccess) -> persist when any record changed ->
+     * assemble the list.
+     *
+     * Reconciling first means the persisted titles match the fields assembled below; flushing first
+     * uses the same list request as the host's next Relay contact; and reading each share's authority
+     * before assembling means the list carries the tier and ACL the Relay actually committed, not
+     * only what this host last stored.
+     */
+    async list() {
+      await tunnel.reconcileShareTitles()
+      // The owner's own page polling the list is the ordinary moment this host reaches the Relay.
+      void tunnel.flushPendingRemovals()
+      const views = await Promise.all([...ownerShares.values()].map(async (share) => {
+        await relay.readRelayAuthority(share)
+        const next = ownerShares.get(share.shareId)
+        if (next === undefined) return undefined
+        return { changed: next !== share, share: ownerShareView(next) }
+      }))
+      const live = views.flatMap(view => view === undefined ? [] : [view])
+      if (live.some(view => view.changed)) {
+        try {
+          await persistOwnerState()
+        } catch {
+          throw new RemoteError('liveshareShares/owner-state-unavailable',
+            'the owner state file could not be written', {})
+        }
+      }
+      return { shares: live.map(view => view.share) }
+    },
+
+    /**
+     * Order: send(remove-share) -> closeShare -> cancel the source turn -> cancel child turns ->
+     * forks.revokeShare -> ownerShares.delete -> accessChanged -> clearShareExpiry -> persist ->
+     * deleteRelayRow -> record and arm a pending removal.
+     *
+     * The worker registration goes first so the Relay cannot admit a viewer while this host still
+     * holds the record; the record is still present when the turn and forks are revoked because they
+     * name the share; and the Relay row is deleted only after the local record is durable, because a
+     * reachable deletion is what lets the pending-removal queue stay empty.
+     */
+    async stop(request) {
+      const share = ownerShares.get(request.shareId)
+      if (share === undefined) {
+        throw new RemoteError('liveshareShares/share-not-found', `share ${request.shareId} is not published`, {
+          shareId: request.shareId,
+        })
+      }
+      const { shareId } = share
+      // The owner's authority over its own share is local: the worker registration, the reader, the
+      // turn it admitted, its forks, and the stored record all go before the Relay is asked, so a
+      // Relay that is down or slow cannot keep a share alive that the owner has stopped.
+      tunnel.send({ type: 'remove-share', shareId })
+      viewerRead.closeShare(shareId)
+      // A removed share leaves nothing to drive the Session, so a turn it admitted is cancelled while the
+      // record is still here to say which share and which Session that turn belongs to.
+      cancelShareTurn(shareId)
+      cancelChildTurns(shareId)
+      // A removed share takes its forks with it: the children stay in the registry as history, but they
+      // are marked revoked so a later resume cannot install a limit and drive a child whose share the
+      // owner withdrew.
+      await forks.revokeShare(shareId, new Date().toISOString())
+      ownerShares.delete(shareId)
+      // A Session no share names any more loses its sandbox, which restores its own tools.
+      reconcileSourceAccess(share.sessionId)
+      accessChanged()
+      tunnel.clearShareExpiry(shareId)
+      try {
+        await persistOwnerState()
+      } catch {
+        throw new RemoteError('liveshareShares/owner-state-unavailable',
+          'the owner state file could not be written', {})
+      }
+      const relayRemoved = await tunnel.deleteRelayRow(share.relay, shareId, share.gatewayToken)
+      if (!relayRemoved) {
+        // The Relay still carries this row, so this host owes it a deletion it could not deliver: the
+        // share's identity and the token that deletes the row are kept until that deletion lands.
+        pendingRemovals.set(shareId, { relay: share.relay, shareId, gatewayToken: share.gatewayToken })
+        try {
+          await persistOwnerState()
+        } catch {
+          throw new RemoteError('liveshareShares/owner-state-unavailable',
+            'the owner state file could not be written', {})
+        }
+        tunnel.armPendingRemovalRetry()
+      }
+      return relayRemoved ? { ok: true } : { ok: true, relay: 'unreachable' }
+    },
+
+    /**
+     * Order: look up the share -> no-op branch (reinstall the layer when it is not confined) ->
+     * ownerShares.set -> accessChanged -> cancel pending calls on a write-to-view narrowing -> persist
+     * (failure restores the previous record) -> send(remove-share) then send(add-share) -> revoke forks
+     * when the switch turns off -> applySourceAccess.
+     *
+     * The record must be stored before either worker message, because those messages make the Relay
+     * reread the share; persistence must succeed before the Relay is told, or a failed write leaves the
+     * Relay carrying a permission this host cannot restore; and the layer is re-installed last because
+     * a request admitted on the new answer must not arrive before the layer that judges it.
+     */
+    async updatePermissions(request) {
+      if (request.shareId === '') {
+        throw new RemoteError('liveshareShares/missing-share-id', 'updatePermissions requires a shareId', {})
+      }
+      const hasTtl = request.ttlMinutes !== undefined
+      if (request.sessionMode === undefined && request.allowsFork === undefined && !hasTtl) {
+        throw new RemoteError('liveshareShares/missing-permission',
+          'updatePermissions requires a permission or lifetime change', {})
+      }
+      if (hasTtl && request.ttlMinutes !== null && !(Number.isSafeInteger(request.ttlMinutes)
+        && request.ttlMinutes > 0 && request.ttlMinutes <= MAX_SHARE_TTL_MINUTES)) {
+        throw new RemoteError('liveshareShares/invalid-ttl', 'ttlMinutes is outside the allowed range', {})
+      }
+      const current = ownerShares.get(request.shareId)
+      if (current === undefined) {
+        throw new RemoteError('liveshareShares/share-not-found', `share ${request.shareId} is not published`, {
+          shareId: request.shareId,
+        })
+      }
+      const shareId = request.shareId
+      const nextMode = request.sessionMode ?? current.sessionMode
+      const nextAllowsFork = request.allowsFork ?? current.allowsFork
+      const nextExpiresAt = hasTtl
+        ? request.ttlMinutes === null
+          ? undefined
+          : new Date(Date.now() + request.ttlMinutes * 60_000).toISOString()
+        : current.expiresAt
+      const changed = nextMode !== current.sessionMode
+        || nextAllowsFork !== current.allowsFork
+        || nextExpiresAt !== current.expiresAt
+      if (!changed) {
+        // A share that already names this state may still have no usable layer: its Session was not
+        // live when it was set, or this host restarted before one could be installed. Asking again
+        // installs it rather than answering as if the capability were already in place.
+        if (!sourceConfined(shareId)) await applySourceAccess(current, undefined, 'mode')
+        return {
+          shareId, sessionMode: current.sessionMode, allowsFork: current.allowsFork,
+          ...(current.expiresAt === undefined ? {} : { expiresAt: current.expiresAt }),
+        }
+      }
+      const { expiresAt: _previousExpiry, ...retained } = current
+      const next: OwnerShare = {
+        ...retained,
+        sessionMode: nextMode,
+        allowsFork: nextAllowsFork,
+        ...(nextExpiresAt === undefined ? {} : { expiresAt: nextExpiresAt }),
+        revision: current.revision + 1,
+      }
+      ownerShares.set(shareId, next)
+      // The reader's snapshot recomputes from the stored tier and fork switch.
+      accessChanged()
+      if (current.sessionMode === 'write' && nextMode !== 'write') viewerRead.cancelPendingCalls(shareId)
+      try {
+        await persistOwnerState()
+      } catch {
+        ownerShares.set(shareId, current)
+        throw new RemoteError('liveshareShares/owner-state-unavailable',
+          'the owner state file could not be written', {})
+      }
+      // The Relay is the authority for both values, so the share is re-registered with them instead of
+      // the owner keeping a local opinion the Relay cannot see.
+      tunnel.send({ type: 'remove-share', shareId })
+      tunnel.send({ type: 'add-share', share: tunnel.shareSpec(next, currentCredential()) })
+      tunnel.scheduleShareExpiry(next)
+      if (!nextAllowsFork) {
+        // Turning the fork switch off stops children from acting immediately; their data stays.
+        await forks.revokeShare(shareId, new Date().toISOString())
+        accessChanged()
+      }
+      // Both tiers drive the source Session, so its access layer stays and is re-installed for the tier
+      // in force: a request admitted on the strength of the owner's answer must never arrive before the
+      // layer that judges it exists, and a narrowed tier must stop the writes the wider one allowed
+      // without ending the turn itself.
+      await applySourceAccess(next, undefined, 'mode')
+      return {
+        shareId, sessionMode: next.sessionMode, allowsFork: next.allowsFork,
+        ...(next.expiresAt === undefined ? {} : { expiresAt: next.expiresAt }),
+      }
+    },
+
+    /**
+     * Order: look up the share -> validate the submission against the live plugin offers ->
+     * ownerShares.set -> persist (failure restores the previous record) -> accessChanged.
+     *
+     * The live offers are the authority, so a name no plugin currently offers is refused before the
+     * record changes; the selection is stored before exposure is invalidated, so every open reader
+     * snapshot recomputes from the record that was actually persisted.
+     */
+    async setCapabilities(request) {
+      if (request.shareId === '') {
+        throw new RemoteError('liveshareShares/missing-share-id', 'setCapabilities requires a shareId', {})
+      }
+      const current = ownerShares.get(request.shareId)
+      if (current === undefined) {
+        throw new RemoteError('liveshareShares/share-not-found', `share ${request.shareId} is not published`, {
+          shareId: request.shareId,
+        })
+      }
+      // The live offers are the authority: a name no plugin currently offers is refused by name here
+      // rather than stored as a selection no decision could ever expose.
+      const accepted = readViewerCapabilitySelection(viewerDeclarations.declaredCapabilities(), request.capabilities)
+      if (!accepted.ok) {
+        const refusal = accepted.refusal
+        if (refusal.code === 'invalid-capabilities') {
+          throw new RemoteError('liveshareShares/invalid-capabilities', 'capabilities is not a plugin selection', {})
+        }
+        if (refusal.code === 'unknown-plugin') {
+          throw new RemoteError('liveshareShares/unknown-plugin',
+            `no plugin offers viewer endpoints under ${refusal.plugin}`, { plugin: refusal.plugin })
+        }
+        throw new RemoteError('liveshareShares/endpoint-not-offered',
+          `${refusal.plugin} does not offer ${refusal.endpoint} as ${refusal.kind}`,
+          { plugin: refusal.plugin, kind: refusal.kind, endpoint: refusal.endpoint })
+      }
+      const { viewerCapabilities: _replaced, ...retained } = current
+      const next: OwnerShare = {
+        ...retained,
+        ...(accepted.selection === undefined ? {} : { viewerCapabilities: accepted.selection }),
+        revision: current.revision + 1,
+      }
+      ownerShares.set(request.shareId, next)
+      try {
+        await persistOwnerState()
+      } catch {
+        ownerShares.set(request.shareId, current)
+        throw new RemoteError('liveshareShares/owner-state-unavailable',
+          'the owner state file could not be written', {})
+      }
+      // Every open reader snapshot recomputes the policy's bindings, which read this selection and the
+      // plugins' offers per decision, so exposure ends or begins at the next call.
+      accessChanged()
+      return { shareId: request.shareId, viewerCapabilities: next.viewerCapabilities ?? [] }
+    },
+
+    /**
+     * Read the live offers. A declaration is an offer, not a grant: nothing here exposes anything.
+     * @returns The endpoints plugins currently offer.
+     */
+    capabilities() {
+      return { capabilities: viewerDeclarations.declaredCapabilities() }
+    },
+
+    /**
+     * Read the address the owner saved, which is also the address new shares publish to.
+     * @returns Relay state shared by the owner UI; both fields are absent while none is saved.
+     */
+    relay() {
+      return relayState()
+    },
+
+    /**
+     * Order: capture the previous effective address -> store the saved address -> bump the
+     * authorization revision when the address changed -> persist.
+     *
+     * The revision is bumped before persistence so a login transaction begun under the old address is
+     * already fenced; a failed write reports the failure but leaves the selected address in force,
+     * exactly as the route always did.
+     */
+    async setRelay(request) {
+      const previousRelay = effectiveRelay()
+      if (request.relayUrl === null || request.relayUrl.trim() === '') {
+        selectRelayAddress(undefined)
+      } else {
+        let normalized: string
+        try {
+          normalized = normalizeRelayUrl(request.relayUrl.trim())
+        } catch {
+          throw new RemoteError('liveshareShares/invalid-relay-url', 'relayUrl is not a usable base URL', {})
+        }
+        selectRelayAddress(normalized)
+      }
+      if (effectiveRelay() !== previousRelay) bumpRelayRevision()
+      try {
+        await persistOwnerState()
+      } catch {
+        throw new RemoteError('liveshareShares/owner-state-unavailable',
+          'the owner state file could not be written', {})
+      }
+      return relayState()
+    },
+
+    /**
+     * Order: resolve the requested address (or the effective one) -> validate it -> probe Relay
+     * credential support when this address has not answered yet -> report identity.
+     *
+     * Probing before reporting keeps an address this host has not asked from borrowing another
+     * address's support answer; the credential itself never enters the report.
+     */
+    async identity(request) {
+      const relay = request.relay === undefined || request.relay === '' ? effectiveRelay() : request.relay
+      if (relay === undefined) {
+        throw new RemoteError('liveshareShares/relay-url-required',
+          'no Liveshare server address is saved; save one in the Share dialog first', {})
+      }
+      if (!isRelayAddress(relay)) {
+        throw new RemoteError('liveshareShares/invalid-relay', `${relay} is not a usable Relay address`, { relay })
+      }
+      const credential = currentCredential()
+      const status = tunnel.ownerIdentityStatus(relay, {}, credential)
+      // Support is per address, so an address this host has not probed yet is probed now rather than
+      // borrowing another address's answer. A credential the signed token says is stale is probed
+      // too: the Relay renews the login behind it, and only its answer can move the local horizon.
+      if (tunnel.factsFor(relay).supportsCredentials === undefined || status.state !== 'verified') {
+        await tunnel.probeRelayCredentialSupport(relay)
+      }
+      return tunnel.ownerIdentityStatus(relay, {}, credential)
+    },
+
+    /**
+     * Order: resolve the share -> forward the audit read to the Relay -> parse a successful answer.
+     *
+     * The Relay's own status and body are preserved on refusal, because the owner page classifies them;
+     * a body this host cannot parse is reported as an unavailable audit rather than silently flattened.
+     */
+    async audit(request) {
+      const share = ownerShares.get(request.shareId)
+      if (share === undefined) {
+        throw new RemoteError('liveshareShares/share-not-found', `share ${request.shareId} is not published`, {
+          shareId: request.shareId,
+        })
+      }
+      const response = await relayReadThroughShare(share, '__liveshare/audit')
+      const audit = response.ok ? readShareAudit(response.text) : undefined
+      if (audit !== undefined) return audit
+      throw new RemoteError('liveshareShares/audit-unavailable', `audit is unavailable for ${share.relay}`, {
+        relay: share.relay,
+        status: response.status,
+        contentType: response.contentType,
+        ...(response.text === '' ? {} : { body: response.text }),
+      })
+    },
+
+    /**
+     * Order: flush owed Relay deletions -> run the anonymous connectivity check.
+     *
+     * Asking whether the Relay answers is the other moment this host learns it can deliver a deletion.
+     */
+    async testRelay() {
+      void tunnel.flushPendingRemovals()
+      // Nothing is in force before the owner saves an address, and a probe of no address is not a fact
+      // about any Relay: the answer states the missing address instead of inventing a failure.
+      const relay = effectiveRelay()
+      if (relay === undefined) {
+        return { ok: false, httpReachable: false, blocking: true, error: 'no Liveshare server address is saved' }
+      }
+      // Connectivity is the first step and carries no owner credential: the address either answers or
+      // it does not, and a server that refuses an anonymous request has still answered.
+      return tunnel.probeRelayConnectivity(normalizeRelayUrl(relay))
+    },
+
+    /**
+     * Order: read the session id -> resolve the credential and identity row -> register one throwaway
+     * share -> remove it after settlement.
+     *
+     * The permission step runs after authorization, so a host that holds no credential for the
+     * effective address reports the authorization it still owes instead of asking the Relay to refuse
+     * it; the throwaway registration carries the same credential, identity row, and management token a
+     * real share would, so the Relay decides it the same way.
+     */
+    async testPublish(request) {
+      if (request.sessionId === '') {
+        throw new RemoteError('liveshareShares/missing-session-id', 'testPublish requires a sessionId', {})
+      }
+      const relayAddress = effectiveRelay()
+      if (relayAddress === undefined) {
+        return { ok: false, blocking: true, error: 'no Liveshare server address is saved' }
+      }
+      const relay = normalizeRelayUrl(relayAddress)
+      const credential = currentCredential()
+      const ownerCredential = tunnel.credentialForRelay(relay, credential)
+      if (ownerCredential === undefined) {
+        return {
+          ok: false,
+          blocking: true,
+          error: `${relay}: no verified owner credential is stored for this address`,
+        }
+      }
+      const share = tunnel.shareSpec({
+        // The probe assigns the throwaway id it waits on; every other field is the real one.
+        shareId: '',
+        sessionId: request.sessionId,
+        sessionTitle: request.sessionId,
+        accessMode: 'open',
+        relay,
+        gatewayToken: base64Url(randomBytes(32)),
+        allowedSubjectIds: [],
+        allowsFork: false,
+        sessionMode: 'view',
+      }, credential)
+      const result = await tunnel.probeRelayPublish(relay, share)
+      return result
+    },
+  }
+  return operations
+}
diff --git a/packages/experimental/liveshare/src/host/owner-types.ts b/packages/experimental/liveshare/src/host/owner-types.ts
new file mode 100644
index 0000000000..8de12759f4
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/owner-types.ts
@@ -0,0 +1,66 @@
+/**
+ * The share record the owner host persists and every extracted owner module reads.
+ *
+ * The type lives apart from the plugin assembly so the persistence, Relay authority, HTTP, and
+ * supervision modules do not import the assembly they are wired into.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/owner-types
+ */
+
+import type { ShareAccessSelection } from '../share-api-types.ts'
+import type { ViewerSessionMode } from './fork-policy.ts'
+import type { ViewerCapabilityGroup } from './viewer-declarations.ts'
+
+/** The ACL one share carried when it was stored, as both the loader and the owner view read it. */
+export interface ShareAccessSummary {
+  /**
+   * Mode this share was created with. A state file written before the allowlist mode was renamed
+   * from `approval` still carries that spelling, so the stored plane admits it and the loader maps
+   * it to {@link OwnerShare}'s vocabulary; every wire and registration surface refuses it.
+   */
+  readonly mode: 'open' | 'selected' | 'approval'
+  readonly selected: readonly ShareAccessSelection[]
+  readonly deploymentAllowedSubjectIds: readonly string[]
+  readonly shareAllowedSubjectIds: readonly string[]
+  readonly broadenedByDeploymentSubjects: boolean
+  readonly identityKeyAcl: true
+}
+
+/** One share this host keeps in its owner state, as the worker and the client both read it. */
+export interface OwnerShare {
+  readonly shareId: string
+  readonly sessionId: string
+  readonly sessionTitle: string
+  readonly accessMode: 'open' | 'selected'
+  readonly link: string
+  /** Relay base URL this share was published to; an owner override never rewrites existing shares. */
+  readonly relay: string
+  readonly gatewayToken: string
+  readonly allowedSubjectIds: readonly string[]
+  readonly access?: ShareAccessSummary
+  readonly revision: number
+  readonly createdAt: string
+  /** ISO time after which the Relay denies viewers; absent means the share never expires. */
+  readonly expiresAt?: string
+  /**
+   * Whether an admitted viewer may fork this share; false unless the owner turned it on.
+   *
+   * Independent of the tier: forking is its own switch, so a view-tier share may allow it and a
+   * writable one may refuse it.
+   */
+  allowsFork: boolean
+  /**
+   * Which of the two tiers this share carries, as the owner chose it.
+   *
+   * `view` reads the source session and drives its loop inside the granted workspace without writing
+   * it; `write` also modifies the files inside that workspace.
+   */
+  sessionMode: ViewerSessionMode
+  /**
+   * Plugin endpoints this share exposes to its viewers, grouped by declaring plugin.
+   *
+   * Absent means the owner exposed none: the endpoints plugins offer stay refused. A selection grants
+   * nothing on its own — the `share-viewer` policy intersects it with the plugin's live declaration.
+   */
+  readonly viewerCapabilities?: readonly ViewerCapabilityGroup[]
+  online: boolean
+}
diff --git a/packages/experimental/liveshare/src/host/relay-authority.ts b/packages/experimental/liveshare/src/host/relay-authority.ts
new file mode 100644
index 0000000000..d01264c363
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/relay-authority.ts
@@ -0,0 +1,376 @@
+/**
+ * The Relay's statement of one share's access, and the reads that adopt it.
+ *
+ * A share's ACL, tier, and expiry belong to the Relay once it states them, so this module holds the
+ * last state frame it reported, fences each read against the generation of the share it was for, and
+ * decides whether a viewer still holds the admission a frame describes.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/relay-authority
+ */
+
+import type {
+  IdentityActor,
+  IdentityTriple,
+  ShareAccessStateFrame,
+  ShareRpcActor,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityFromKey, identityKeyOf, parseShareAccessState } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { ForkRegistry } from './fork-registry.ts'
+import { isExpired, type ViewerSessionMode } from './fork-policy.ts'
+import type { ShareAccessSelection } from '../share-api-types.ts'
+import type { ShareAccessSummary } from './owner-types.ts'
+import type { OwnerShare } from './owner-types.ts'
+import type { ViewerReadService } from './viewer-read.ts'
+import { isRecord, json } from './wire-json.ts'
+
+/** What one authoritative Relay read of a share produced. */
+export interface RelayAuthorityRead {
+  readonly ok: boolean
+  readonly accessState?: ShareAccessStateFrame
+}
+
+/**
+ * Whether one requester still holds access to one share this host publishes.
+ *
+ * The Relay admits a request before it reaches this host, so admission is a fact for the request that
+ * carried the input; input admitted earlier has to be re-checked, because the grant it relied on may have
+ * ended while it waited in the queue. The rule is the Relay's own admission rule: an open share admits the
+ * whole organization once its own ACL is empty, and every share admits the subjects its ACL names — by
+ * subject id or by canonical identity key.
+ * @param share - Share the input arrived through, as this host holds it.
+ * @param requester - Identity the turn's origin recorded.
+ * @returns True while that identity still holds access.
+ */
+export function requesterStillAdmitted(
+  share: Pick<OwnerShare, 'accessMode' | 'allowedSubjectIds'>,
+  requester: { readonly providerId: string; readonly tenantId: string; readonly subjectId: string },
+): boolean {
+  if (share.allowedSubjectIds.length === 0) return share.accessMode === 'open'
+  return share.allowedSubjectIds.includes(requester.subjectId)
+    || share.allowedSubjectIds.includes(identityKeyOf(requester))
+}
+
+/** Host state one Relay authority read and the frames it adopts read. */
+export interface RelayAuthorityDeps {
+  /** Shares this host publishes, which a frame and a read both update or verify. */
+  readonly ownerShares: Map<string, OwnerShare>
+  /** Whether the host has been disposed. */
+  readonly disposed: () => boolean
+  /** Children this host created, whose grants a narrowed frame ends. */
+  readonly forks: ForkRegistry
+  /** This host's own identity, used to read subject ids as identities. */
+  readonly ownerIdentity: IdentityActor | undefined
+  /** Subjects this deployment admits to every share. */
+  readonly allowedSubjectIds: readonly string[]
+  /** The viewer reader, which releases work admitted against a superseded snapshot. */
+  readonly viewerRead: () => ViewerReadService
+  /** Tell remote access that reader answers may have changed. */
+  readonly accessChanged: () => void
+  /** Stop the running turn one share may no longer drive. */
+  readonly cancelShareTurn: (shareId: string, revokedSubject?: string) => void
+  /** Stop child work whose grant is narrowed or removed. */
+  readonly cancelChildTurns: (shareId: string, viewer?: ShareRpcActor) => void
+  /** Arm or re-arm one share's expiry cancellation. */
+  readonly scheduleShareExpiry: (share: OwnerShare) => void
+  /** Reconcile one Session's sandbox after its shares' tiers, deadlines, or admissions changed. */
+  readonly reconcileSourceAccess: (sessionId: string) => void
+}
+
+/** Reads and adopted states of the Relay's authority over this host's shares. */
+export interface RelayAuthority {
+  /**
+   * Whether one Relay admission still stands for one viewer.
+   * @param shareId - Share the viewer was admitted to.
+   * @param viewer - Identity the Relay asserted.
+   * @returns True while that identity is still admitted.
+   */
+  viewerAdmitted(shareId: string, viewer: ShareRpcActor): boolean
+  /**
+   * Forget one share's held authority after the worker reconnected it.
+   * @param shareId - Share the worker reconnected.
+   */
+  forgetRelayAccess(shareId: string): void
+  /**
+   * Fence off one share's held authority and release the work admitted against it.
+   * @param shareId - Share whose authority ended.
+   */
+  invalidateRelayAccess(shareId: string): void
+  /**
+   * Adopt one Relay's statement of a share's access.
+   * @param shareId - Share the frame describes.
+   * @param state - Parsed access-state frame.
+   */
+  applyRelayAccess(shareId: string, state: ShareAccessStateFrame): void
+  /**
+   * Read one share's authority from its Relay and adopt what it states.
+   * @param share - Share to read.
+   * @param signal - Cancellation of the forwarded request.
+   * @returns The snapshot that was adopted, or an unavailable read.
+   */
+  readRelayAuthority(share: OwnerShare, signal?: AbortSignal): Promise<RelayAuthorityRead>
+  /**
+   * Refresh one share's authority at request ingress, throwing when it cannot be read.
+   * @param shareId - Share to refresh.
+   * @param signal - Cancellation of the forwarded request.
+   */
+  refreshRelayAccess(shareId: string, signal?: AbortSignal): Promise<void>
+  /**
+   * The tier this host may still drive one share with, or undefined when it may not.
+   * @param shareId - Share the execution arrived through.
+   * @returns The tier, or undefined when the share is gone, past its deadline, or not yet reported.
+   */
+  drivableModeOf(shareId: string): ViewerSessionMode | undefined
+}
+
+function sameStringSet(left: readonly string[], right: readonly string[]): boolean {
+  if (left.length !== right.length) return false
+  const values = new Set(left)
+  return right.every(value => values.has(value))
+}
+
+/**
+ * Whether one adopted frame can have ended access some viewer held under the previous one.
+ *
+ * The Relay admits the whole organization while the ACL is empty and the share is open; once either
+ * changes, only the named subjects remain. A subject the previous ACL named and the new one does not is a
+ * viewer whose grant ended.
+ * @param previous - The frame this host held before.
+ * @param next - The frame it just adopted.
+ * @returns True when someone the previous frame admitted may no longer be admitted.
+ */
+export function admissionNarrowed(previous: ShareAccessStateFrame, next: ShareAccessStateFrame): boolean {
+  const wasOpen = previous.allowedSubjectIds.length === 0 && previous.accessMode === 'open'
+  const isOpen = next.allowedSubjectIds.length === 0 && next.accessMode === 'open'
+  if (wasOpen && !isOpen) return true
+  return previous.allowedSubjectIds.some(subject => !next.allowedSubjectIds.includes(subject))
+}
+
+async function relayRequests(defaultRelay: string, share: OwnerShare, signal?: AbortSignal): Promise<Response> {
+  const relayUrl = new URL(`${defaultRelay}/__liveshare/requests`)
+  relayUrl.searchParams.set('shareId', share.shareId)
+  try {
+    const response = await fetch(relayUrl, {
+      headers: { authorization: `Bearer ${share.gatewayToken}` },
+      signal: signal === undefined ? AbortSignal.timeout(5_000) : AbortSignal.any([signal, AbortSignal.timeout(5_000)]),
+    })
+    return new Response(await response.text(), {
+      status: response.status,
+      headers: { 'content-type': response.headers.get('content-type') ?? 'application/json; charset=utf-8' },
+    })
+  } catch {
+    return json({ error: 'relay-unavailable' }, 502)
+  }
+}
+
+async function relayAuthorityRead(defaultRelay: string, share: OwnerShare, signal?: AbortSignal): Promise<RelayAuthorityRead> {
+  try {
+    const response = await relayRequests(defaultRelay, share, signal)
+    if (!response.ok) return { ok: false }
+    const data: unknown = await response.json()
+    if (!isRecord(data)) return { ok: false }
+    const accessState = parseShareAccessState({ ...data, type: 'share-access-state' })
+    return { ok: true, ...(accessState === undefined ? {} : { accessState }) }
+  } catch {
+    return { ok: false }
+  }
+}
+
+/**
+ * Build the ACL summary a share carries for one stated set of subjects.
+ * @param share - Share the ACL belongs to.
+ * @param acl - Subjects the Relay states for the share.
+ * @param deploymentAllowedSubjectIds - Subjects this deployment admits to every share.
+ * @param ownerIdentity - This host's own identity, used to read bare subject ids.
+ * @returns The ACL summary.
+ */
+function accessSummaryForAcl(
+  share: OwnerShare,
+  acl: readonly string[],
+  deploymentAllowedSubjectIds: readonly string[],
+  ownerIdentity: IdentityActor | undefined,
+): ShareAccessSummary {
+  const selected = new Map<string, ShareAccessSelection>()
+  for (const person of share.access?.selected ?? []) {
+    if (acl.includes(person.identityKey)) selected.set(person.identityKey, person)
+  }
+  for (const key of acl) {
+    const identity = identityFromKey(key)
+    if (identity !== undefined) {
+      selected.set(key, { ...identity, identityKey: key })
+      continue
+    }
+    if (deploymentAllowedSubjectIds.includes(key)) continue
+    const fallback = identityForGrantedSubject(key, ownerIdentity)
+    if (fallback !== undefined) {
+      const fallbackKey = identityKeyOf(fallback)
+      selected.set(fallbackKey, { ...fallback, identityKey: fallbackKey })
+    }
+  }
+  return {
+    mode: share.accessMode,
+    selected: [...selected.values()],
+    deploymentAllowedSubjectIds: [...deploymentAllowedSubjectIds],
+    shareAllowedSubjectIds: acl,
+    broadenedByDeploymentSubjects: deploymentAllowedSubjectIds.some(subject => acl.includes(subject)),
+    identityKeyAcl: true,
+  }
+}
+
+/**
+ * Read one granted subject as an identity, when the owner named a bare subject id.
+ * @param subjectId - Subject id or canonical identity key the owner named.
+ * @param ownerIdentity - This host's own identity, which supplies the provider and tenant.
+ * @returns The identity, or undefined when the owner named no identity this host can read.
+ */
+export function identityForGrantedSubject(
+  subjectId: string,
+  ownerIdentity: IdentityActor | undefined,
+): IdentityTriple | undefined {
+  const parsed = identityFromKey(subjectId)
+  if (parsed !== undefined) return parsed
+  return ownerIdentity === undefined
+    ? undefined
+    : {
+      providerId: ownerIdentity.providerId,
+      tenantId: ownerIdentity.tenantId,
+      subjectId,
+    }
+}
+
+/**
+ * Build the reader of the Relay's authority over this host's shares.
+ * @param deps - Shares, viewer reader, and the work a narrowed grant ends.
+ * @returns Reads and adopted states of the Relay's authority.
+ */
+export function createRelayAuthority(deps: RelayAuthorityDeps): RelayAuthority {
+  const relayAccess = new Map<string, ShareAccessStateFrame>()
+  const relayGenerations = new Map<string, number>()
+  const generationOf = (shareId: string): number => relayGenerations.get(shareId) ?? 0
+
+  function viewerAdmitted(shareId: string, viewer: ShareRpcActor): boolean {
+    const state = relayAccess.get(shareId)
+    return !deps.disposed() && state !== undefined && !isExpired(state.expiresAt, Date.now())
+      && requesterStillAdmitted(state, viewer)
+  }
+
+  function forgetRelayAccess(shareId: string): void {
+    relayAccess.delete(shareId)
+    deps.accessChanged()
+  }
+
+  function invalidateRelayAccess(shareId: string): void {
+    relayGenerations.set(shareId, generationOf(shareId) + 1)
+    const heldAuthority = relayAccess.delete(shareId)
+    if (heldAuthority || deps.ownerShares.get(shareId)?.online === true) {
+      deps.cancelShareTurn(shareId)
+      deps.cancelChildTurns(shareId)
+    }
+    deps.viewerRead().closeShare(shareId)
+    deps.accessChanged()
+  }
+
+  /**
+   * Adopt one Relay's statement of a share's access.
+   *
+   * The frame is the authority for what a viewer receives, but only for what it states: the fork switch
+   * below is guarded, so a Relay older than that switch leaves the owner's own decision standing rather
+   * than silently narrowing the share.
+   */
+  function applyRelayAccess(
+    shareId: string,
+    state: ShareAccessStateFrame,
+  ): void {
+    if (deps.disposed()) return
+    const previous = relayAccess.get(shareId)
+    if (previous !== undefined && previous.version >= state.version) return
+    relayAccess.set(shareId, state)
+    const share = deps.ownerShares.get(shareId)
+    if (share === undefined) return
+    const { expiresAt: _expiresAt, ...retained } = share
+    // The Relay's stated fork switch replaces the owner's decision; one it never stated leaves it intact.
+    const nextAllowsFork = state.allowsFork ?? share.allowsFork
+    const next: OwnerShare = { ...retained, accessMode: state.accessMode,
+      allowedSubjectIds: state.allowedSubjectIds,
+      allowsFork: nextAllowsFork,
+      access: accessSummaryForAcl({ ...share, accessMode: state.accessMode }, state.allowedSubjectIds,
+        deps.allowedSubjectIds, deps.ownerIdentity), revision: share.revision + 1,
+      ...(state.expiresAt === undefined ? {} : { expiresAt: state.expiresAt }) }
+    deps.ownerShares.set(shareId, next)
+    deps.scheduleShareExpiry(next)
+    if (previous !== undefined && (previous.sessionMode !== state.sessionMode
+      || previous.allowsFork !== nextAllowsFork
+      || previous.accessMode !== state.accessMode || !sameStringSet(previous.allowedSubjectIds, state.allowedSubjectIds)
+      || previous.expiresAt !== state.expiresAt)) {
+      // End requests admitted against the superseded snapshot before any later operation runs.
+      if (previous.sessionMode === 'write' && state.sessionMode !== 'write') deps.viewerRead().cancelPendingCalls(shareId)
+      deps.viewerRead().recheckAdmission(shareId)
+      for (const child of deps.forks.listForShare(shareId)) {
+        // A fork outlives a tier narrowing: the child runs under its own read-only ceiling. It ends with
+        // the viewer's admission, or with the switch that created it.
+        if (!viewerAdmitted(shareId, child.creator) || state.allowsFork !== true) {
+          deps.cancelChildTurns(shareId, child.creator)
+          deps.viewerRead().closeViewerStreams(shareId, child.creator)
+        }
+      }
+      // An admission that narrowed can have ended a viewer's grant, and the host no longer attributes a
+      // turn to a requester: it stops whatever the Session runs now rather than leave input admitted
+      // under a grant that ended driving the owner's machine. A tier narrowing alone ends no turn,
+      // because every execution re-reads the share's current tier before writing.
+      if (admissionNarrowed(previous, state)) deps.cancelShareTurn(shareId)
+      // The Session's sandbox follows its shares: a narrowed tier re-installs the read-only layer, and a
+      // deadline that just passed releases it.
+      deps.reconcileSourceAccess(share.sessionId)
+    }
+    deps.accessChanged()
+  }
+
+  async function readRelayAuthority(share: OwnerShare, signal?: AbortSignal): Promise<RelayAuthorityRead> {
+    signal?.throwIfAborted()
+    const generation = generationOf(share.shareId)
+    const snapshot = await relayAuthorityRead(share.relay, share, signal)
+    signal?.throwIfAborted()
+    const current = deps.ownerShares.get(share.shareId)
+    if (deps.disposed() || generation !== generationOf(share.shareId) || current?.gatewayToken !== share.gatewayToken
+      || current.relay !== share.relay) return { ok: false }
+    if (!snapshot.ok || snapshot.accessState === undefined) {
+      invalidateRelayAccess(share.shareId)
+      return { ok: false }
+    }
+    applyRelayAccess(share.shareId, snapshot.accessState)
+    return snapshot
+  }
+
+  async function refreshRelayAccess(shareId: string, signal?: AbortSignal): Promise<void> {
+    const share = deps.ownerShares.get(shareId)
+    if (deps.disposed() || share === undefined) throw new Error('share-not-found')
+    if (!(await readRelayAuthority(share, signal)).ok) throw new Error('Relay access state is unavailable')
+  }
+
+  /**
+   * The tier this host may still drive one share with, or undefined when it may not.
+   *
+   * The deadline belongs to the grant: a share whose expiry has passed is not drivable even though its
+   * record still names a tier, so its turns read as unestablished exactly as a downgraded share's do.
+   *
+   * The answer is the narrower of two statements: what this host registered, and what the Relay reports
+   * for it. The Relay can lower a share — a deployment that does not write reports `view` for one — and
+   * must never raise what the owner chose, so a stored record narrowed after its last registration caps
+   * the Relay's wider answer.
+   */
+  function drivableModeOf(shareId: string): ViewerSessionMode | undefined {
+    const share = deps.ownerShares.get(shareId)
+    if (deps.disposed() || share === undefined || isExpired(share.expiresAt, Date.now())) return undefined
+    const reported = relayAccess.get(shareId)?.sessionMode
+    if (reported === undefined) return undefined
+    return reported === 'write' && share.sessionMode === 'write' ? 'write' : 'view'
+  }
+
+  return {
+    viewerAdmitted,
+    forgetRelayAccess,
+    invalidateRelayAccess,
+    applyRelayAccess,
+    readRelayAuthority,
+    refreshRelayAccess,
+    drivableModeOf,
+  }
+}
diff --git a/packages/experimental/liveshare/src/host/relay-url.ts b/packages/experimental/liveshare/src/host/relay-url.ts
new file mode 100644
index 0000000000..41d03a49f9
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/relay-url.ts
@@ -0,0 +1,34 @@
+/**
+ * Normalize a public Relay base URL by removing query, hash, and trailing slashes.
+ * @param value Public Relay URL or base URL.
+ * @returns Canonical base URL without credentials, query, hash, or trailing slash.
+ */
+export function normalizeRelayUrl(value: string): string {
+  if (value === '') throw new Error('liveshare relayUrl must not be empty')
+  let url: URL
+  try {
+    url = new URL(value)
+  } catch {
+    throw new Error('liveshare relayUrl must be an absolute URL')
+  }
+  if (url.protocol !== 'http:' && url.protocol !== 'https:') {
+    throw new Error('liveshare relayUrl must use http or https')
+  }
+  if (url.username !== '' || url.password !== '') {
+    throw new Error('liveshare relayUrl must not include credentials')
+  }
+  url.search = ''
+  url.hash = ''
+  url.pathname = url.pathname.replace(/\/+$/u, '')
+  return url.href.replace(/\/$/u, '')
+}
+
+/**
+ * Split one Relay base URL into its origin and base path.
+ * @param relay Public Relay URL or base URL.
+ * @returns Validated origin and trailing-slash-free base path.
+ */
+export function relayEndpoint(relay: string): { origin: string; basePath: string } {
+  const url = new URL(normalizeRelayUrl(relay))
+  return { origin: url.origin, basePath: url.pathname.replace(/\/+$/u, '') }
+}
diff --git a/packages/experimental/liveshare/src/host/share-host.ts b/packages/experimental/liveshare/src/host/share-host.ts
new file mode 100644
index 0000000000..1e76ef93c8
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/share-host.ts
@@ -0,0 +1,625 @@
+/** Web-only host plugin: owner sign-in routes, the share-management Remote, and gateway lifetime. */
+
+import { homedir } from 'node:os'
+import { dirname, join } from 'node:path'
+import type { Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/dsh-api-remote-access'
+import type {} from '@deepseek-ai/dsh-api-session-controller'
+import type {} from '@deepseek-ai/dsh-client-connection'
+import { SessionId } from '@deepseek-ai/dsh-session'
+import type {} from '@deepseek-ai/dsh-workspace'
+import {
+  loadOwnerState,
+  writeOwnerState,
+} from './owner-persistence.ts'
+import { normalizeRelayUrl } from './relay-url.ts'
+import { createRelayAuthority } from './relay-authority.ts'
+import { createOwnerShareOperations } from './owner-share-operations.ts'
+import { registerOwnerHttpRoutes } from './owner-http-routes.ts'
+import { createTunnelSupervision } from './tunnel-supervision.ts'
+import { activateSession, createSourceAccess, type SourceAccess } from './source-access.ts'
+import { LiveshareShares } from './share-remote.ts'
+import type { OwnerRelayState } from '../share-api-types.ts'
+import type { OwnerShare } from './owner-types.ts'
+import {
+  createViewerReadService,
+  type ViewerReadGateway,
+  type ViewerReadService,
+} from './viewer-read.ts'
+import { createViewerAccessPolicy, readerWriteRefusal, type ViewerAccessFacts } from './viewer-access-policy.ts'
+import { ViewerDeclarations, viewerDeclarationsOf, type ViewerDeclarationsSurface } from './viewer-declarations.ts'
+import { shareViewerOf } from './viewer-principal.ts'
+import { loadOwnerCredential } from './owner-credential-file.ts'
+import { ForkRegistry } from './fork-registry.ts'
+import { OwnerAuthorizations } from './owner-authorization.ts'
+import {
+  installHostForkEnforcement,
+  type ForkEnforcementFailure,
+  type ForkEnforcementHost,
+  preflightForkChild,
+} from './fork-enforcement.ts'
+import { readViewerAsset } from './viewer-assets.ts'
+import type { ForkShareState } from './fork-policy.ts'
+import type { ForkToolExecution } from './fork-tool-guard.ts'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import {
+  identityKeyOf,
+  type IdentityActor,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+
+export const name = 'liveshare-share-host'
+export const inject = ['connection']
+
+export { requesterStillAdmitted } from './relay-authority.ts'
+export { gatewayWorkerCommand, refreshedShareTitle } from './tunnel-supervision.ts'
+export { activateSession } from './source-access.ts'
+export type { SourceAccessApplier } from './source-access.ts'
+
+/** Default credential file name, stored beside the owner state file. */
+const OWNER_CREDENTIAL_FILENAME = 'owner-credential.json'
+
+/** Default fork registry file name, beside the owner state file. */
+const FORK_REGISTRY_FILENAME = 'forks.json'
+
+export type { OwnerShare } from './owner-types.ts'
+
+/**
+ * Host plugin configuration: the owner identity shares are created under and the owner-local files that
+ * retain shares and the credential across restarts.
+ *
+ * The public Relay address is not configuration. The owner saves it in the Share dialog, where it
+ * persists in the owner state file, so a profile that switches this bundle on without an address still
+ * loads: its sharing surfaces report that no address is set until the owner saves one.
+ */
+export interface Config {
+  /** Provider subject ids allowed to view every share created by this host. */
+  readonly allowedSubjectIds?: readonly string[]
+  /** Authenticated owner identity used to scope people-directory searches. */
+  readonly ownerIdentity?: IdentityActor
+  /** Owner identity provider used when `ownerIdentity` is assembled from fields. */
+  readonly ownerIdentityProvider?: string
+  /** Owner identity tenant used when `ownerIdentity` is assembled from fields. */
+  readonly ownerIdentityTenant?: string
+  /** Owner identity subject used when `ownerIdentity` is assembled from fields. */
+  readonly ownerIdentitySubject?: string
+  /** Owner identity display name used when `ownerIdentity` is assembled from fields. */
+  readonly ownerIdentityDisplayName?: string
+  /** Owner-local JSON file retaining share metadata and gateway tokens across host restarts. */
+  readonly ownerStateFile?: string
+  /**
+   * Owner credential file. Defaults beside the owner state file; it holds the Relay-issued
+   * credential, which is why it is written with owner-only permissions and never reported.
+   */
+  readonly ownerCredentialFile?: string
+}
+
+
+/**
+ * The share state one viewer request is decided against, read from this host's published share.
+ *
+ * The Relay admits viewers before a request arrives, so admission is a fact here and the published
+ * share supplies the rest. The owner's mode is part of it: the reader routes a prompt naming the share's
+ * own Session to the source-session path only when this says `write`, and installs a child with this
+ * host's bounded write only for a write share — absent, both answer as reading only.
+ * @param share - the share this host published to the Relay.
+ * @returns the state the viewer reader decides a fork, a child prompt, or a source prompt against.
+ */
+export function publishedShareState(share: OwnerShare): ForkShareState {
+  return {
+    shareId: share.shareId,
+    sessionId: share.sessionId,
+    allowsFork: share.allowsFork,
+    viewerAdmitted: true,
+    stopped: false,
+    sessionMode: share.sessionMode,
+    ...(share.viewerCapabilities === undefined ? {} : { viewerCapabilities: share.viewerCapabilities }),
+    ...(share.expiresAt === undefined ? {} : { expiresAt: share.expiresAt }),
+  }
+}
+
+/**
+ * Register the owner sign-in routes and the share-management Remote, and enforce current grants on
+ * external Session input.
+ * @param ctx - Host context carrying Connection and optional execution services.
+ * @param config - Relay and owner-state configuration.
+ * @returns Async disposer that stops the tunnel worker and releases share access.
+ */
+export async function apply(ctx: Context, config: Config): Promise<() => Promise<void>> {
+  const connection = ctx.connection
+  // Optional service: read through ctx.get so profiles without the api gateway still load. The
+  // base gateway's own stream contract is the narrow view the reader opens viewer streams through.
+  const gateway: ViewerReadGateway | undefined = ctx.get('typertGateway')
+  const ownerIdentity = config.ownerIdentity ?? ownerIdentityFromConfig(config)
+  const ownerContext = ownerIdentity === undefined
+    ? {}
+    : { ownerProviderId: ownerIdentity.providerId, ownerTenantId: ownerIdentity.tenantId }
+  const allowedSubjectIds = [...(config.allowedSubjectIds ?? [])]
+  if (allowedSubjectIds.some(subject => subject === '')) {
+    throw new Error('liveshare-share-host: allowedSubjectIds must not contain an empty subject')
+  }
+  const ownerStateFile = config.ownerStateFile
+    ?? nonEmpty(process.env.LIVESHARE_OWNER_STATE_FILE)
+    ?? defaultOwnerStateFile()
+  if (ownerStateFile === '') {
+    throw new Error('liveshare-share-host: ownerStateFile must not be empty')
+  }
+  const ownerState = loadOwnerState(ownerStateFile)
+  const ownerCredentialFile = config.ownerCredentialFile
+    ?? nonEmpty(process.env.LIVESHARE_OWNER_CREDENTIAL_FILE)
+    ?? join(dirname(ownerStateFile), OWNER_CREDENTIAL_FILENAME)
+  // Children of this host's shares, kept beside the owner state so a restart still knows whose they
+  // are and whether their share has stopped allowing forking.
+  const forks = new ForkRegistry(join(dirname(ownerStateFile), FORK_REGISTRY_FILENAME))
+  let storedCredential = loadOwnerCredential(ownerCredentialFile)
+  // The owner's saved address is the only address in force: this host has no deployment-configured
+  // fallback, so clearing it returns the host to "no address" rather than to another default.
+  let relayOverride = ownerState.relayUrl
+  let effectiveRelay: string | undefined = relayOverride
+  /** An address change invalidates authorizations awaiting a network response, even A → B → A. */
+  let relayRevision = 0
+  /** The normalized address in force, absent until the owner saves one. */
+  const currentRelay = (): string | undefined =>
+    effectiveRelay === undefined ? undefined : normalizeRelayUrl(effectiveRelay)
+  const captureOwnerOperation = () => ({
+    relay: currentRelay(),
+    relayRevision,
+    instanceKey: ownerState.instanceId,
+  })
+  type OwnerOperation = ReturnType<typeof captureOwnerOperation>
+  const ownerOperationCurrent = (operation: OwnerOperation): boolean =>
+    !disposed && operation.relayRevision === relayRevision
+      && operation.relay === currentRelay() && operation.instanceKey === ownerState.instanceId
+  const ownerShares = ownerState.shares
+  const pendingRemovals = ownerState.pendingRemovals
+  let disposed = false
+  const relay = createRelayAuthority({
+    ownerShares,
+    disposed: () => disposed,
+    forks,
+    ownerIdentity,
+    allowedSubjectIds,
+    viewerRead: () => viewerRead,
+    accessChanged,
+    cancelShareTurn: (shareId) => { sourceAccess.cancelShareTurn(shareId) },
+    cancelChildTurns: (shareId, viewer) => { sourceAccess.cancelChildTurns(shareId, viewer) },
+    scheduleShareExpiry: (share) => { tunnel.scheduleShareExpiry(share) },
+    reconcileSourceAccess: (sessionId) => { sourceAccess.reconcileSessionAccess(sessionId) },
+  })
+  const tunnel = createTunnelSupervision({
+    ctx,
+    ownerShares,
+    pendingRemovals,
+    instanceId: ownerState.instanceId,
+    allowedSubjectIds,
+    ownerContext,
+    ownerIdentity,
+    relay,
+    viewerRead: () => viewerRead,
+    accessChanged,
+    cancelShareTurn: (shareId) => { sourceAccess.cancelShareTurn(shareId) },
+    cancelChildTurns: (shareId, viewer) => { sourceAccess.cancelChildTurns(shareId, viewer) },
+    reconcileSourceAccess: (sessionId) => { sourceAccess.reconcileSessionAccess(sessionId) },
+    disposed: () => disposed,
+    ownerCredentialFile,
+    storedCredential: () => storedCredential,
+    setStoredCredential: (credential) => { storedCredential = credential },
+    persistOwnerState: () => persistOwnerState(),
+  })
+  /**
+   * Tell the remote-access service that reader answers may have changed.
+   *
+   * Every open reader access snapshot is recomputed from the `share-viewer` policy, which reads the state
+   * the caller just changed.
+   */
+  function accessChanged(): void {
+    ctx.get('remoteAccess')?.invalidate()
+  }
+  /**
+   * Share state the `share-viewer` policy and the reader's pre-dispatch write checks read.
+   *
+   * The declaration surface is the one the bundle provided before this host started, which plugins may
+   * already have offered endpoints through; mounting this module on its own provides one here instead.
+   * Either way this host is its only consumer, so it subscribes to recompute open access snapshots.
+   */
+  // A live bundle activation can start this host before the declaration entry's service is visible.
+  // Give that entry one task turn before providing a host-owned fallback, so the two never register
+  // the same service and the entry remains the surface declaration plugins already resolved.
+  const viewerDeclarations = viewerDeclarationsOf(ctx) ?? await new Promise<ViewerDeclarationsSurface>((resolve) => {
+    setTimeout(() => { resolve(viewerDeclarationsOf(ctx) ?? new ViewerDeclarations(ctx)) }, 0)
+  })
+  ctx.effect(() => viewerDeclarations.onChanged(accessChanged), 'liveshare.viewerDeclarations.changed')
+  /**
+   * The share facts the access snapshot and the fork decision both read.
+   *
+   * An absent tier is not `view`: the policy refuses every driving decision for a share this host
+   * cannot place, rather than offering a reach nobody established. Forking follows the share's own
+   * switch, so a share whose tier this host cannot place still answers for the switch: a fork is a
+   * read-only child whatever the tier turns out to be.
+   */
+  const shareFactsOf = (shareId: string): ForkShareState | undefined => {
+    const share = ownerShares.get(shareId)
+    if (share === undefined) return undefined
+    const sessionMode = relay.drivableModeOf(shareId)
+    return {
+      ...publishedShareState(share),
+      ...(sessionMode === undefined ? {} : { sessionMode }),
+      allowsFork: share.allowsFork,
+    }
+  }
+
+  /** @see SourceAccess.confined */
+  function sourceConfined(shareId: string): boolean {
+    return sourceAccess.confined(shareId)
+  }
+
+  const accessFacts: ViewerAccessFacts = {
+    share: shareFactsOf,
+    viewerAdmitted: (shareId, actor) => ownerShares.has(shareId) && relay.viewerAdmitted(shareId, actor),
+    sourceConfined,
+    forks,
+    workspaces: () => ctx.get('workspaceRegistry')?.list() ?? [],
+    declaredCapabilities: () => viewerDeclarations.declaredCapabilities(),
+  }
+  ctx.inject(['remoteAccess'], (scope) => {
+    scope.remoteAccess.registerPolicy('share-viewer', createViewerAccessPolicy(accessFacts))
+  })
+  /**
+   * The turn each Session is running and whether a share viewer started it.
+   *
+   * A viewer's turn runs the Session's confined layer; the owner's own turn keeps the deployment's native
+   * tools. The answer is decided from the admitted step's entering principals and kept for that turn's
+   * later steps. It lives in memory only — never in the Session log — so a restarted host recomputes it
+   * from the next step it admits, and a workspace with no share never consults it.
+   */
+  const viewerTurns = new Map<string, { readonly turn: number; confined: boolean }>()
+
+  /**
+   * Whether one tool execution belongs to a turn a share viewer started.
+   * @param execution - The execution being judged.
+   * @returns True when the running turn was started by viewer input, and for an execution this host cannot
+   *   attribute to an Agent; an unattributable call must not escape the sandbox.
+   */
+  const confinedExecution = (execution: ForkToolExecution): boolean => {
+    const id = (execution.agent as { readonly id?: unknown } | undefined)?.id
+    if (typeof id !== 'string') return true
+    return viewerTurns.get(id)?.confined === true
+  }
+
+  /**
+   * Record whether the turn one admitted step belongs to was started by a share viewer.
+   *
+   * The first admitted step of a turn decides; a later step of the same turn keeps that answer, so the
+   * owner's steering input inside a viewer's turn stays confined. A viewer message that reaches a later
+   * step narrows an already-running turn instead of waiting for the next one, so neither side can widen a
+   * turn by interjecting.
+   * @param sessionId - Session whose turn is running.
+   * @param turn - Turn the admitted step belongs to.
+   * @param viewerStarted - Whether this step's entering input names a share viewer.
+   */
+  function noteViewerTurn(sessionId: string, turn: number, viewerStarted: boolean): void {
+    const current = viewerTurns.get(sessionId)
+    if (current?.turn !== turn) {
+      viewerTurns.set(sessionId, { turn, confined: viewerStarted })
+      return
+    }
+    if (!current.confined && viewerStarted) current.confined = true
+  }
+
+  const sourceAccess: SourceAccess = createSourceAccess({
+    ctx,
+    ownerShares,
+    forks,
+    relay,
+    disposed: () => disposed,
+    accessChanged,
+    confinedExecution,
+  })
+
+  /**
+   * The host-side enforcement record for one child: keep its registry entry, follow the share's current
+   * ceiling, and re-read both the tool grant and the Relay authority before each execution.
+   * @param childSessionId - Recorded fork child to enforce.
+   * @param write - Whether the share this child serves may write.
+   * @returns The record installed on the child's scope.
+   */
+  const forkEnforcementHost = (childSessionId: string, write: boolean): ForkEnforcementHost => ({
+    forks,
+    ...(write ? { write: true } : {}),
+    describe: execution => sourceAccess.forkToolPaths(execution),
+    authorized: tool => sourceAccess.childToolAuthorized(childSessionId, tool),
+    refreshAuthorized: async () => {
+      const child = forks.find(childSessionId)
+      /* v8 ignore next 2 -- the limit is installed only while this registry holds the child. */
+      if (child === undefined) throw new Error('fork-unknown-child')
+      await relay.refreshRelayAccess(child.shareId)
+    },
+  })
+
+  const viewerRead: ViewerReadService = createViewerReadService({
+    connection,
+    ...(gateway === undefined ? {} : { gateway }),
+    sharedSessionId: shareId => ownerShares.get(shareId)?.sessionId,
+    forks,
+    // The Relay admitted this viewer before the request reached this host, so admission is a fact
+    // here; the share's own switch, session, and expiry are what the fork decision reads.
+    forkStateOf: shareFactsOf,
+    // A grant ends between two requests, so admission is re-read here rather than carried from the
+    // request that opened a stream: the same rule the queued-turn re-check applies, read from the same
+    // record. A viewer the owner revoked stops reading, and the streams it already opened are closed by
+    // the revoke path below.
+    viewerStillAdmitted: (shareId, viewer) => {
+      const share = ownerShares.get(shareId)
+      return share !== undefined && relay.viewerAdmitted(shareId, viewer)
+    },
+    sourceConfined,
+    refreshAdmission: (shareId, signal) => relay.refreshRelayAccess(shareId, signal),
+    readAsset: (path, peer) => readViewerAsset(ctx, path, peer),
+    writeRefusal: (viewer, action, sessionId, concrete) => readerWriteRefusal(accessFacts, viewer, action, sessionId, concrete),
+    accessChanged,
+    // The same record the confinement answer reads, so a refusal can say why the layer is missing.
+    sourceRefusal: (shareId) => {
+      const share = ownerShares.get(shareId)
+      /* v8 ignore next -- the refusal is only read for a share this host still publishes. */
+      if (share === undefined) return undefined
+      return sourceAccess.refusalOf(shareId)
+    },
+    prepareSource: sessionId => sourceAccess.prepareSourceSession(sessionId, 'prompt'),
+    prepareSourceForReader: (shareId) => { sourceAccess.prepareSourceForReader(shareId) },
+    // Real child enforcement: it looks up the child's own scoped context, the workspace that child was
+    // granted, and the host's filesystem, and refuses to install anything while one is missing — the
+    // record it writes is what opens the child's prompt gate.
+    // A write-tier share's child gets this host's bounded write; a host that cannot install it refuses
+    // the child rather than exposing the deployment's path-based tool under a wider ceiling.
+    enforceChild: async (childSessionId, options) =>
+      installHostForkEnforcement(ctx, childSessionId, forkEnforcementHost(childSessionId, options?.write === true)),
+    debug: process.env.LIVESHARE_VIEWER_DEBUG === '1',
+    // Activate a recorded child before its prompt is admitted: resolving it resumes the Session, whose
+    // `agent/created` listener installs the child's limit before the activation resolves. An activation
+    // that does not lead to an installed limit leaves the gate refusing the child.
+    prepareChild: async (childSessionId) => {
+      // Refuse a resume this host cannot confine before the agent is announced: an announced child whose
+      // limit never lands would be a published Session without the guard it was promised.
+      await preflightForkChild(ctx, childSessionId)
+      await activateSession(ctx, childSessionId)
+      /* v8 ignore next -- the prompt gate reaches this only while the limit is not yet installed. */
+      if (forks.enforcementInstalled(childSessionId)) return
+      const record = forks.find(childSessionId)
+      // A scope that refuses a registration is a fail-closed refusal, not a throw; this carries the error
+      // it raised into the refusal the viewer reads.
+      const failure: ForkEnforcementFailure = {}
+      const dispose = await installHostForkEnforcement(ctx, childSessionId,
+        forkEnforcementHost(childSessionId, record !== undefined && relay.drivableModeOf(record.shareId) === 'write'),
+        failure)
+      if (dispose === undefined) {
+        const registration = failure.registration
+        throw registration === undefined
+          ? new Error('fork execution limits are unavailable')
+          : new Error(`fork execution limits are unavailable: ${describeError(registration.error)}`,
+            { cause: registration.error })
+      }
+      ctx.get('agents')?.get(childSessionId as SessionId)?.ctx.effect(() => dispose)
+    },
+  })
+
+  // A child created in an earlier process is not enforced by anything yet: its guard died with that
+  // process. Every entered agent is announced on `agent/created` before creation resolves, and a child
+  // this host recorded gets its limit installed there — refusing the announcement when that cannot be
+  // done, so a resumed fork is never published without the limit it was promised. A session this host
+  // never recorded as a fork returns here untouched, and a revoked child refuses rather than being
+  // revived. AgentLoop holds the agent's queued input until every listener settles and a throw fails
+  // creation, so a refused limit still prevents the agent from ever being prompted.
+  ctx.on('agent/created', async ({ agent }) => {
+    const childSessionId = String(agent.id)
+    // A shared Session is the other case this listener covers: it must carry the layer that confines an
+    // externally driven turn before it is published, and a resumed one reaches this listener with its own
+    // scope. A Session no published share names installs nothing here.
+    const published = [...ownerShares.values()].find(candidate => candidate.sessionId === childSessionId)
+    const arriving = agent.session
+    if (published !== undefined) {
+      await sourceAccess.apply(published, { context: agent.ctx, session: arriving }, 'publish')
+    }
+    const record = forks.find(childSessionId)
+    if (record === undefined) return
+    if (record.revokedAt !== undefined) {
+      throw new Error(`fork ${childSessionId} came from a share that is no longer active`)
+    }
+    // The ceiling follows the share the child came from, read from what this host publishes now: a share
+    // this host no longer publishes, or one whose mode it cannot read, installs nothing wider than
+    // reading, so a resumed child never comes back with more than its share still allows.
+    const share = ownerShares.get(record.shareId)
+    const dispose = await installHostForkEnforcement(ctx, childSessionId,
+      forkEnforcementHost(childSessionId, share !== undefined && relay.drivableModeOf(share.shareId) === 'write'))
+    if (dispose === undefined) {
+      throw new Error(`fork ${childSessionId} could not be given read-only limits`)
+    }
+    // The limit lives exactly as long as the agent that carries it.
+    agent.ctx.effect(() => dispose)
+  })
+
+  /** Admission belongs to this share's source or this actor's recorded fork, never another Session. */
+  const externalTargetAllowed = (sessionId: string, origin: { shareId: string; actor: ShareRpcActor }): boolean => {
+    const share = ownerShares.get(origin.shareId)
+    if (share === undefined || !relay.viewerAdmitted(origin.shareId, origin.actor)) return false
+    // Both tiers drive the shared Session; what the tier permits is decided per tool by the confined
+    // layer, which refuses the write name for a view-tier turn.
+    if (sessionId === share.sessionId) return relay.drivableModeOf(origin.shareId) !== undefined
+    const child = forks.find(sessionId)
+    return child !== undefined && child.shareId === origin.shareId
+      && identityKeyOf(child.creator) === identityKeyOf(origin.actor)
+      && sourceAccess.childToolAuthorized(sessionId, 'read')
+  }
+
+  // A reader's input is re-checked here rather than before it entered the queue: the step about to run
+  // reads the viewer from each entering message's own source, so input admitted under a grant that ended
+  // since is refused before it reaches the model. A shared Session's own turns are not attributed, so the
+  // sandbox on the Session — not this admission check — is what confines them.
+  ctx.on('agent/pre-step', async ({ agent, signal, turn }, next) => {
+    const decision = await next()
+    if (decision.kind !== 'enter') return decision
+    const child = forks.find(agent.session.id)
+    const requests = decision.messages.flatMap((message) => {
+      if (message.source.kind !== 'user' || !('principal' in message.source)) return []
+      const viewer = shareViewerOf(message.source.principal)
+      return viewer === undefined ? [] : [viewer]
+    })
+    const shareIds = new Set(requests.map(origin => origin.shareId))
+    if (child !== undefined) shareIds.add(child.shareId)
+    try {
+      for (const shareId of shareIds) await relay.refreshRelayAccess(shareId, signal)
+    } catch (_error) {
+      // Missing authoritative admission refuses queued input without entering a model step.
+      return { kind: 'reject' }
+    }
+    if (child !== undefined && !sourceAccess.childToolAuthorized(child.childSessionId, 'read')) return { kind: 'reject' }
+    if (requests.some(origin => !externalTargetAllowed(agent.session.id, origin))) return { kind: 'reject' }
+    noteViewerTurn(String(agent.session.id), turn, requests.length > 0)
+    return decision
+  })
+
+  /**
+   * Access layers this host installed, keyed by the SESSION they constrain.
+   *
+   * One Session may be shared by several shares at either tier, and its layer belongs to the Session
+   * rather than to any one share: installing a second one would collide on the tool names, and removing
+   * a share must not take away the constraint another share still needs. The layer is write-capable when
+   * any share over that Session is, and each execution is judged against the tier of its own share.
+   */
+  /** Owner authorizations this host began and is waiting to redeem. */
+  const ownerAuthorizations = new OwnerAuthorizations()
+  const persistOwnerState = (): Promise<void> =>
+    writeOwnerState(ownerStateFile, relayOverride, ownerState.instanceId, ownerShares, pendingRemovals)
+
+  // A restored share keeps its own deadline, so the cancel that stops its running turn when the deadline
+  // passes is armed again from the record rather than remembered anywhere else.
+  for (const share of ownerShares.values()) tunnel.scheduleShareExpiry(share)
+  // A host that starts with write-mode shares installs their access layers before serving any request for
+  // them, so a restored share is never briefly writable without the layer that judges its turns.
+  void Promise.all([...ownerShares.values()].map(share => sourceAccess.apply(share, undefined, 'restore')))
+  // Reconnecting a share, refreshing its title, and probing or claiming at the Relay all need an address
+  // the owner saved. A host that has none still serves the sharing surfaces and stops its shares' turns
+  // on their deadlines, but contacts no Relay: there is no address to ask, and the dialog states that.
+  if (effectiveRelay !== undefined) {
+    for (const share of ownerShares.values()) tunnel.send({ type: 'add-share', share: tunnel.shareSpec(share, storedCredential) })
+    // The shares this profile reconnected with keep their recorded titles until the title folds answer,
+    // so the refresh runs beside mounting rather than holding it up.
+    void tunnel.reconcileShareTitles()
+    // A host that starts with a stored credential re-binds its surviving shares to that identity, so
+    // an owner does not have to re-create links that predate identity binding. It presents the stored
+    // token even when its signed expiry has passed, because the Relay judges it against the login it
+    // renews and answers with the horizon that applies.
+    const startupRelay = normalizeRelayUrl(effectiveRelay)
+    const startupCredential = storedCredential
+    void tunnel.claimOwnedShares(startupRelay, tunnel.claimableCredentialForRelay(startupRelay))
+      .then((outcome) => {
+        // A pass whose credential was replaced, or whose token the Relay made this host re-adopt with a
+        // new horizon, still describes the credential in hand; a different token does not.
+        /* v8 ignore start -- only a concurrent owner action replaces the credential; a stale claim answers nothing. */
+        if (!disposed && storedCredential?.credential === startupCredential?.credential) {
+          tunnel.factsFor(startupRelay).claim = outcome
+        }
+        /* v8 ignore stop */
+      })
+      /* v8 ignore start -- a claim pass that cannot run leaves shares unclaimed; a later pass retries. */
+      .catch(() => { /* a claim pass that cannot run leaves shares unclaimed; a later pass retries */ })
+      /* v8 ignore stop */
+    void tunnel.probeRelayCredentialSupport(startupRelay)
+  }
+
+  /**
+   * Read the address the owner saved and the address new shares publish to, which are the same value.
+   * @returns Relay state shared by the owner UI; both fields are absent while no address is saved.
+   */
+  const relayState = (): OwnerRelayState =>
+    relayOverride === undefined ? {} : { override: relayOverride, effective: relayOverride }
+
+  const selectRelayAddress = (override: string | undefined): void => {
+    relayOverride = override
+    effectiveRelay = override
+  }
+  const operations = createOwnerShareOperations({
+    ownerShares,
+    pendingRemovals,
+    allowedSubjectIds,
+    forks,
+    viewerRead,
+    viewerDeclarations,
+    relay,
+    tunnel,
+    effectiveRelay: () => effectiveRelay,
+    relayState,
+    selectRelayAddress,
+    bumpRelayRevision: () => { relayRevision += 1 },
+    storedCredential: () => storedCredential,
+    persistOwnerState,
+    applySourceAccess: (share, ready, trigger) => sourceAccess.apply(share, ready, trigger),
+    sourceConfined,
+    accessChanged,
+    cancelShareTurn: (shareId) => { sourceAccess.cancelShareTurn(shareId) },
+    cancelChildTurns: (shareId, viewer) => { sourceAccess.cancelChildTurns(shareId, viewer) },
+    reconcileSourceAccess: (sessionId) => { sourceAccess.reconcileSessionAccess(sessionId) },
+  })
+  new LiveshareShares(ctx, operations)
+  registerOwnerHttpRoutes({
+    connection,
+    tunnel,
+    captureOwnerOperation,
+    ownerOperationCurrent,
+    ownerAuthorizations,
+    ownerCredentialFile,
+    storedCredential: () => storedCredential,
+    setStoredCredential: (credential) => { storedCredential = credential },
+    disposed: () => disposed,
+  })
+
+  // One attempt at startup: a host that restarted with rows still owed delivers them as soon as it can.
+  void tunnel.flushPendingRemovals()
+
+  return async () => {
+    for (const shareId of ownerShares.keys()) {
+      sourceAccess.cancelShareTurn(shareId)
+      sourceAccess.cancelChildTurns(shareId)
+    }
+    disposed = true
+    await tunnel.dispose(() => { viewerRead.close() })
+  }
+}
+
+function defaultOwnerStateFile(): string {
+  const dshHome = nonEmpty(process.env.DSH_HOME) ?? join(homedir(), '.dsh')
+  return join(dshHome, 'liveshare', 'owner-shares.json')
+}
+
+function nonEmpty(value: string | undefined): string | undefined {
+  return value === undefined || value === '' ? undefined : value
+}
+
+/**
+ * Read one caught value's message for the refusal this host throws.
+ * @param error - Value a dependency threw.
+ * @returns The error's message, or the value's own string form.
+ */
+function describeError(error: unknown): string {
+  /* v8 ignore next -- tool registries reject with Error instances; the string form is defensive. */
+  return error instanceof Error ? error.message : String(error)
+}
+
+/**
+ * Resolve the owner identity this host registers with, from the config fields.
+ * @param config - Host config that may name a provider, tenant, subject, and display name.
+ * @returns The identity, or undefined when no field names one.
+ */
+function ownerIdentityFromConfig(config: Config): IdentityActor | undefined {
+  const providerId = nonEmpty(config.ownerIdentityProvider)
+  const tenantId = nonEmpty(config.ownerIdentityTenant)
+  const subjectId = nonEmpty(config.ownerIdentitySubject)
+  if (providerId === undefined && tenantId === undefined && subjectId === undefined) return undefined
+  if (providerId === undefined || tenantId === undefined || subjectId === undefined) {
+    throw new Error('liveshare-share-host: ownerIdentity fields require provider, tenant, and subject')
+  }
+  return {
+    providerId,
+    tenantId,
+    subjectId,
+    displayName: nonEmpty(config.ownerIdentityDisplayName) ?? subjectId,
+  }
+}
diff --git a/packages/experimental/liveshare/src/host/share-operations.ts b/packages/experimental/liveshare/src/host/share-operations.ts
new file mode 100644
index 0000000000..44b4d15f76
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/share-operations.ts
@@ -0,0 +1,119 @@
+/**
+ * Owner share-management operations behind the `liveshareShares` Remote.
+ *
+ * The implementation stays inside the Host's `apply()` closure, where it reads the same share map,
+ * Relay authority, worker channel, and persistence queue the sign-in routes and the viewer reader
+ * use. This module states the one interface the Remote service calls, so no surface owns a second
+ * copy of a side effect.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/share-operations
+ */
+
+import type {
+  CreateShareRequest,
+  CreatedShare,
+  OwnerIdentityRequest,
+  OwnerIdentityStatus,
+  OwnerRelayState,
+  OwnerShareList,
+  RelayConnectivityView,
+  RelayPublishView,
+  SetRelayRequest,
+  SetShareCapabilitiesRequest,
+  ShareAudit,
+  ShareAuditRequest,
+  ShareCapabilities,
+  ShareCapabilityOffers,
+  SharePermissions,
+  StopShareRequest,
+  StopShareResult,
+  TestPublishRequest,
+  UpdateSharePermissionsRequest,
+} from '../share-api-types.ts'
+
+/**
+ * The twelve owner operations behind the share-management surface.
+ *
+ * Each method owns one operation's business order. Failures are thrown as `RemoteError` values with
+ * a `liveshareShares/` code, which the Gateway carries to the Client unchanged.
+ */
+export interface OwnerShareOperations {
+  /**
+   * Publish one Session and store the share.
+   * @param request - Session, title, access, lifetime, and both switches the owner chose.
+   * @returns The created share's link and stored values.
+   */
+  create(request: CreateShareRequest): Promise<CreatedShare>
+
+  /**
+   * Refresh titles and Relay authority, then list this host's shares.
+   * @returns Every share this host publishes.
+   */
+  list(): Promise<OwnerShareList>
+
+  /**
+   * Stop one share locally, revoke its forks, and delete its Relay row when reachable.
+   * @param request - Share to stop.
+   * @returns Whether the Relay row still needs a retry.
+   */
+  stop(request: StopShareRequest): Promise<StopShareResult>
+
+  /**
+   * Change one share's tier, fork switch, or both.
+   * @param request - Share and the switches to change.
+   * @returns The permissions the share now carries.
+   */
+  updatePermissions(request: UpdateSharePermissionsRequest): Promise<SharePermissions>
+
+  /**
+   * Replace one share's exposed plugin endpoints.
+   * @param request - Share and the selection to store.
+   * @returns The capability selection the share now carries.
+   */
+  setCapabilities(request: SetShareCapabilitiesRequest): Promise<ShareCapabilities>
+
+  /**
+   * Read the endpoints plugins currently offer.
+   * @returns The live offer list.
+   */
+  capabilities(): ShareCapabilityOffers
+
+  /**
+   * Read the address the owner saved, which is also the address new shares publish to.
+   * @returns The current Relay state, with both address fields absent while none is saved.
+   */
+  relay(): OwnerRelayState
+
+  /**
+   * Choose the Relay address later shares publish to.
+   * @param request - Normalized address or null to clear the saved one.
+   * @returns The Relay state after the change.
+   */
+  setRelay(request: SetRelayRequest): Promise<OwnerRelayState>
+
+  /**
+   * Report this host's owner identity for one Relay address.
+   * @param request - Address to report, or the effective one when absent.
+   * @returns The owner identity status, without the credential.
+   */
+  identity(request: OwnerIdentityRequest): Promise<OwnerIdentityStatus>
+
+  /**
+   * Read the Relay's durable audit trail for one share.
+   * @param request - Share whose audit is read.
+   * @returns The audit events, or a structured failure when the Relay cannot answer.
+   */
+  audit(request: ShareAuditRequest): Promise<ShareAudit>
+
+  /**
+   * Check that the effective Relay answers at all.
+   * @returns The anonymous connectivity result.
+   */
+  testRelay(): Promise<RelayConnectivityView>
+
+  /**
+   * Register one throwaway share to check whether this host may publish.
+   * @param request - Session the throwaway registration names.
+   * @returns The Relay's decision about this host's credential.
+   */
+  testPublish(request: TestPublishRequest): Promise<RelayPublishView>
+}
diff --git a/packages/experimental/liveshare/src/host/share-remote.ts b/packages/experimental/liveshare/src/host/share-remote.ts
new file mode 100644
index 0000000000..dbcea321eb
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/share-remote.ts
@@ -0,0 +1,150 @@
+/**
+ * The owner's share management as one Typert Remote service.
+ *
+ * Every method delegates to the one {@link OwnerShareOperations} implementation that owns each
+ * share-management side effect, so the owner page gains a Remote surface without a second copy.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/share-remote
+ */
+
+import type { Context } from '@deepseek-ai/cordis'
+import { Remote, TypertRemoteService } from '@deepseek-ai/dsh-typert-protocol'
+import type {
+  CreateShareRequest,
+  CreatedShare,
+  OwnerIdentityRequest,
+  OwnerIdentityStatus,
+  OwnerRelayState,
+  OwnerShareList,
+  RelayConnectivityView,
+  RelayPublishView,
+  SetRelayRequest,
+  SetShareCapabilitiesRequest,
+  ShareAudit,
+  ShareAuditRequest,
+  ShareCapabilities,
+  ShareCapabilityOffers,
+  SharePermissions,
+  StopShareRequest,
+  StopShareResult,
+  TestPublishRequest,
+  UpdateSharePermissionsRequest,
+} from '../share-api-types.ts'
+import type { OwnerShareOperations } from './share-operations.ts'
+
+/**
+ * Owner-only Remote surface over the share-management operations.
+ *
+ * The Gateway decides each call through remote access, so a `share-viewer` Peer is refused before a
+ * method runs; the owner Peer reaches the one implementation that owns each share-management side
+ * effect. `create` takes its Session as the `sessionId` of its single request object, so the Session
+ * resource kind's default resolver names that Session for the call without a reader declared here.
+ */
+export class LiveshareShares extends TypertRemoteService {
+  /**
+   * @param ctx - Host context that owns the share state and the worker channel.
+   * @param operations - Owner operations implemented in the Host's `apply()` closure.
+   */
+  constructor(ctx: Context, private readonly operations: OwnerShareOperations) {
+    super(ctx, 'liveshareShares')
+  }
+
+  /**
+   * Publish one Session and store the share.
+   * @param request - Session, title, access, lifetime, and both switches the owner chose.
+   * @returns The created share's link and stored values.
+   */
+  @Remote('create')
+  create(request: CreateShareRequest): Promise<CreatedShare> { return this.operations.create(request) }
+
+  /**
+   * Refresh titles and Liveshare server authority, then list this host's shares.
+   * @returns Every share this host publishes.
+   */
+  @Remote('list')
+  list(): Promise<OwnerShareList> { return this.operations.list() }
+
+  /**
+   * Stop one share locally, revoke its forks, and delete its row on the Liveshare server when reachable.
+   * @param request - Share to stop.
+   * @returns Whether the row on the Liveshare server still needs a retry.
+   */
+  @Remote('stop')
+  stop(request: StopShareRequest): Promise<StopShareResult> { return this.operations.stop(request) }
+
+  /**
+   * Change one share's tier, fork switch, or both.
+   * @param request - Share and the switches to change.
+   * @returns The permissions the share now carries.
+   */
+  @Remote('updatePermissions')
+  updatePermissions(request: UpdateSharePermissionsRequest): Promise<SharePermissions> {
+    return this.operations.updatePermissions(request)
+  }
+
+  /**
+   * Replace one share's exposed plugin endpoints.
+   * @param request - Share and the selection to store.
+   * @returns The capability selection the share now carries.
+   */
+  @Remote('setCapabilities')
+  setCapabilities(request: SetShareCapabilitiesRequest): Promise<ShareCapabilities> {
+    return this.operations.setCapabilities(request)
+  }
+
+  /**
+   * Read the endpoints plugins currently offer.
+   * @returns The live offer list.
+   */
+  @Remote('capabilities')
+  capabilities(): ShareCapabilityOffers { return this.operations.capabilities() }
+
+  /**
+   * Read the Liveshare server address the owner saved.
+   * @returns The current Liveshare server state, with both address fields absent while none is saved.
+   */
+  @Remote('relay')
+  relay(): OwnerRelayState { return this.operations.relay() }
+
+  /**
+   * Choose the Liveshare server address later shares publish to.
+   * @param request - Normalized address or null to clear the saved one.
+   * @returns The Liveshare server state after the change.
+   */
+  @Remote('setRelay')
+  setRelay(request: SetRelayRequest): Promise<OwnerRelayState> { return this.operations.setRelay(request) }
+
+  /**
+   * Report this host's owner identity for one Liveshare server address.
+   * @param request - Address to report, or the effective one when absent.
+   * @returns The owner identity status, without the credential.
+   */
+  @Remote('identity')
+  identity(request: OwnerIdentityRequest): Promise<OwnerIdentityStatus> {
+    return this.operations.identity(request)
+  }
+
+  /**
+   * Read the Liveshare server's durable audit trail for one share.
+   * @param request - Share whose audit is read.
+   * @returns The audit events, or a structured failure when the Liveshare server cannot answer.
+   */
+  @Remote('audit')
+  audit(request: ShareAuditRequest): Promise<ShareAudit> { return this.operations.audit(request) }
+
+  /**
+   * Check that the effective Liveshare server answers at all.
+   * @returns The anonymous connectivity result.
+   */
+  @Remote('testRelay')
+  testRelay(): Promise<RelayConnectivityView> { return this.operations.testRelay() }
+
+  /**
+   * Register one throwaway share to check whether this host may publish.
+   * @param request - Session the throwaway registration names.
+   * @returns The Liveshare server's decision about this host's credential.
+   */
+  @Remote('testPublish')
+  testPublish(request: TestPublishRequest): Promise<RelayPublishView> {
+    return this.operations.testPublish(request)
+  }
+}
diff --git a/packages/experimental/liveshare/src/host/shared-tools.ts b/packages/experimental/liveshare/src/host/shared-tools.ts
new file mode 100644
index 0000000000..92bdd686fa
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/shared-tools.ts
@@ -0,0 +1,225 @@
+/**
+ * The tool surface a shared Session and its fork children may use.
+ *
+ * The source-session sandbox and each fork child's limit read this one table, so both admit the same
+ * tools at the same tiers. Each entry states how that tool's own arguments name workspace paths and how
+ * a checked call is handed back with canonical paths; a tool the table does not name is refused.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/shared-tools
+ */
+
+import { isRecord } from './wire-json.ts'
+
+/** Tier that admits one shared tool. */
+export type SharedToolTier = 'view' | 'write'
+
+/** Paths one tool call names, as an enforcement guard reads them. */
+export interface SharedToolPaths {
+  /**
+   * Every path the call names, empty when it names none, or undefined when they cannot be established.
+   *
+   * Empty means the tool's own default is the granted workspace, never "no filesystem effect": an entry
+   * states that separately.
+   */
+  readonly paths: readonly string[] | undefined
+  /** Whether the tool declares that it touches no workspace file at all. */
+  readonly noFileEffect: boolean
+}
+
+/** One tool call's declared paths and the rewrite that hands the tool their canonical form. */
+export interface SharedToolCall {
+  /** Paths this call names, in the order {@link SharedToolCall.rewrite} consumes them. */
+  readonly paths: readonly string[]
+  /**
+   * Rewrite the call's arguments so it opens exactly the canonical targets this host checked.
+   * @param canonical - Canonical path for each entry of {@link SharedToolCall.paths}, in the same order.
+   * @returns The arguments to delegate with.
+   */
+  rewrite(canonical: readonly string[]): Record<string, unknown>
+}
+
+/** One confined edit call's validated arguments. */
+export interface SharedEditArguments {
+  /** Path the call names, non-empty. */
+  readonly filePath: string
+  /** Literal text to replace, non-empty. */
+  readonly oldString: string
+  /** Literal replacement text, which must differ from {@link SharedEditArguments.oldString}. */
+  readonly newString: string
+  /** Whether every match is replaced instead of requiring exactly one. */
+  readonly replaceAll: boolean
+}
+
+/**
+ * Read and validate one edit call's arguments.
+ *
+ * A bounded edit body replaces the deployment tool's execution, so it runs that tool's own argument
+ * checks itself: the file must be named, and the replaced text must be non-empty and actually change.
+ * @param args - Call arguments exactly as the runtime presents them.
+ * @returns The validated arguments, or undefined when the call names no usable edit.
+ */
+export function sharedEditArguments(args: unknown): SharedEditArguments | undefined {
+  const input = isRecord(args) ? args : {}
+  const filePath = input.file_path
+  const oldString = input.old_string
+  const newString = input.new_string
+  if (typeof filePath !== 'string' || filePath === ''
+    || typeof oldString !== 'string' || oldString === ''
+    || typeof newString !== 'string' || oldString === newString) {
+    return undefined
+  }
+  return { filePath, oldString, newString, replaceAll: input.replace_all === true }
+}
+
+/** One tool the shared surface admits, and how this host reads and bounds it. */
+export interface SharedToolProfile {
+  /** Tool name the deployment registers. */
+  readonly name: string
+  /** Lowest tier that admits the tool. */
+  readonly tier: SharedToolTier
+  /** Whether the tool touches no workspace file, so a call needs no path check. */
+  readonly noFileEffect: boolean
+  /**
+   * Whether a call may omit its path, in which case it searches the granted workspace.
+   *
+   * Such a call names no path itself, so its replacement supplies the Session's working directory.
+   */
+  readonly defaultsToWorkspace: boolean
+  /**
+   * Read one call's paths and the rewrite that consumes their canonical form.
+   * @param args - Parsed call arguments.
+   * @returns The call, or undefined when the arguments name no path this host can establish.
+   */
+  call(args: Record<string, unknown>): SharedToolCall | undefined
+}
+
+/**
+ * Read a call whose only path argument is `file_path`.
+ * @param args - Parsed call arguments.
+ * @returns The call naming that file, or undefined when it names none.
+ */
+function filePathCall(args: Record<string, unknown>): SharedToolCall | undefined {
+  const path = args.file_path
+  if (typeof path !== 'string' || path === '') return undefined
+  return { paths: [path], rewrite: canonical => ({ ...args, file_path: canonical[0] }) }
+}
+
+/**
+ * Read a search call whose optional `path` argument selects its root.
+ * @param args - Parsed call arguments.
+ * @returns The call, with no declared path when it searches the workspace default.
+ */
+function searchPathCall(args: Record<string, unknown>): SharedToolCall | undefined {
+  const path = args.path
+  if (path === undefined) return { paths: [], rewrite: canonical => ({ ...args, path: canonical[0] }) }
+  if (typeof path !== 'string' || path === '') return undefined
+  return { paths: [path], rewrite: canonical => ({ ...args, path: canonical[0] }) }
+}
+
+/**
+ * Read a delivery call whose `files` entries each name a path.
+ * @param args - Parsed call arguments.
+ * @returns The call naming every presented file, or undefined when any entry names none.
+ */
+function presentedFilesCall(args: Record<string, unknown>): SharedToolCall | undefined {
+  const files = args.files
+  if (!Array.isArray(files)) return undefined
+  const entries: Record<string, unknown>[] = []
+  const paths: string[] = []
+  for (const file of files) {
+    if (!isRecord(file)) return undefined
+    const path = file.path
+    if (typeof path !== 'string' || path === '') return undefined
+    entries.push(file)
+    paths.push(path)
+  }
+  return {
+    paths,
+    rewrite: canonical => ({
+      ...args,
+      files: entries.map((file, index) => ({ ...file, path: canonical[index] })),
+    }),
+  }
+}
+
+/**
+ * Read a call the tool declares has no filesystem effect.
+ * @param args - Parsed call arguments.
+ * @returns The call, unchanged and naming no path.
+ */
+function noFileCall(args: Record<string, unknown>): SharedToolCall {
+  return { paths: [], rewrite: () => args }
+}
+
+/** Every tool the shared surface admits, in the order replacements are installed. */
+export const SHARED_TOOL_PROFILES: readonly SharedToolProfile[] = [
+  { name: 'read', tier: 'view', noFileEffect: false, defaultsToWorkspace: false, call: filePathCall },
+  { name: 'read_image', tier: 'view', noFileEffect: false, defaultsToWorkspace: false, call: filePathCall },
+  { name: 'glob', tier: 'view', noFileEffect: false, defaultsToWorkspace: true, call: searchPathCall },
+  { name: 'grep', tier: 'view', noFileEffect: false, defaultsToWorkspace: true, call: searchPathCall },
+  { name: 'present', tier: 'view', noFileEffect: false, defaultsToWorkspace: false, call: presentedFilesCall },
+  { name: 'todo_write', tier: 'view', noFileEffect: true, defaultsToWorkspace: false, call: noFileCall },
+  { name: 'skill', tier: 'view', noFileEffect: true, defaultsToWorkspace: false, call: noFileCall },
+  { name: 'web_search', tier: 'view', noFileEffect: true, defaultsToWorkspace: false, call: noFileCall },
+  { name: 'web_fetch', tier: 'view', noFileEffect: true, defaultsToWorkspace: false, call: noFileCall },
+  { name: 'edit', tier: 'write', noFileEffect: false, defaultsToWorkspace: false, call: filePathCall },
+  { name: 'write', tier: 'write', noFileEffect: false, defaultsToWorkspace: false, call: filePathCall },
+]
+
+/**
+ * Look up one tool on the shared surface.
+ * @param name - Tool name.
+ * @returns Its profile, or undefined when the surface does not admit that name.
+ */
+export function sharedToolProfile(name: string): SharedToolProfile | undefined {
+  return SHARED_TOOL_PROFILES.find(profile => profile.name === name)
+}
+
+/**
+ * List the names the shared surface admits at one tier.
+ * @param tier - Highest tier whose tools to list; `write` includes the `view` tools.
+ * @returns Every admitted tool name, in table order.
+ */
+export function sharedToolNames(tier: SharedToolTier): readonly string[] {
+  return SHARED_TOOL_PROFILES.filter(profile => profile.tier === 'view' || tier === 'write')
+    .map(profile => profile.name)
+}
+
+/**
+ * Describe one call for an enforcement guard.
+ * @param name - Tool name.
+ * @param args - Call arguments exactly as the runtime presents them.
+ * @returns The paths the call names and whether the tool has no file effect; a name the surface does
+ *   not admit, or arguments it cannot read, establish no path.
+ */
+export function describeSharedTool(name: string, args: unknown): SharedToolPaths {
+  const profile = sharedToolProfile(name)
+  if (profile === undefined) return { paths: undefined, noFileEffect: false }
+  if (profile.noFileEffect) return { paths: [], noFileEffect: true }
+  const call = isRecord(args) ? profile.call(args) : undefined
+  return call === undefined
+    ? { paths: undefined, noFileEffect: false }
+    : { paths: call.paths, noFileEffect: false }
+}
+
+/**
+ * Supply the granted workspace as the search root of a call that omitted its path.
+ *
+ * A call that names no path still reads files, so a guard that checks only named paths would refuse it
+ * for having nothing to check. The default is the Session's working directory, which the replacement
+ * resolves against the granted root like any other path.
+ * @param described - Paths an argument reader established.
+ * @param name - Tool name.
+ * @param workspace - Directory the tool searches when the call names none.
+ * @returns The described paths, with the workspace substituted for a pathless default-root call.
+ */
+export function withDefaultSearchRoot(
+  described: SharedToolPaths,
+  name: string,
+  workspace: string,
+): SharedToolPaths {
+  const profile = sharedToolProfile(name)
+  if (profile?.defaultsToWorkspace !== true || described.paths === undefined || described.paths.length > 0) {
+    return described
+  }
+  return { paths: [workspace], noFileEffect: false }
+}
diff --git a/packages/experimental/liveshare/src/host/source-access.ts b/packages/experimental/liveshare/src/host/source-access.ts
new file mode 100644
index 0000000000..6615393494
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/source-access.ts
@@ -0,0 +1,672 @@
+/**
+ * The confined access layer one share's source Session carries, and the turn control around it.
+ *
+ * The layer is registered into the Session's own scope and confines the turns a share viewer starts while
+ * any share over the Session is active; the owner's own turns keep the deployment's tools. It belongs to
+ * the Session rather than to one share, so several shares over it share one installation, and the host
+ * releases it once no share is left. Stopping a share stops whatever turn the Session is running, with
+ * the owner's own cancellation, without asking which turn or which requester it was.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/source-access
+ */
+
+import type { Context } from '@deepseek-ai/cordis'
+import { SessionId, type Session } from '@deepseek-ai/dsh-session'
+import { scopeOf } from '@deepseek-ai/dsh-scope'
+import type { SandboxExecutionPolicy } from '@deepseek-ai/dsh-sandbox'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import {
+  installSourceSessionAccess,
+  type ForkEnforcementFs,
+  type ForkToolPaths,
+  type ForkToolRegistry,
+  type SourceSessionAccessInstallation,
+} from './fork-enforcement.ts'
+import type { ForkToolExecution } from './fork-tool-guard.ts'
+import { isExpired, type ViewerSessionMode } from './fork-policy.ts'
+import { describeSharedTool, sharedToolProfile } from './shared-tools.ts'
+import type { ForkRegistry } from './fork-registry.ts'
+import type { RelayAuthority } from './relay-authority.ts'
+
+/** Owner share shape this module reads; the host owns the full record. */
+import type { OwnerShare } from './owner-types.ts'
+
+/** Where one source-access attempt came from; named in its diagnostic line. */
+export type WriteAccessTrigger = 'publish' | 'restore' | 'mode' | 'reader' | 'prompt'
+
+/** Why one source-access installation did not happen: the guard that refused, as a stable code. */
+type WriteAccessRefusal =
+  | 'no-live-session'
+  | 'no-live-context'
+  | 'no-session-scope'
+  | 'no-filesystem'
+  | 'no-tool-registry'
+  | 'no-sandbox-policy'
+  | 'no-workspace-root'
+  | 'no-session-cwd'
+  | 'workspace-unresolved'
+  | 'share-gone'
+  | 'share-reassigned'
+  | 'share-mode-changed'
+  | 'share-inactive'
+
+/** What one source-access attempt did. */
+export type WriteAccessOutcome =
+  /** This attempt installed the layer. */
+  | { readonly kind: 'installed'; readonly installation: SourceSessionAccessInstallation }
+  /** A usable layer was already recorded, by this attempt's caller or another share's. */
+  | { readonly kind: 'kept'; readonly installation: SourceSessionAccessInstallation }
+  /** A guard refused, and named itself in the diagnostic. */
+  | { readonly kind: 'refused'; readonly reason: WriteAccessRefusal }
+
+/** Installs the access layer one share's source Session needs. */
+export type SourceAccessApplier = (
+  share: OwnerShare,
+  ready: { readonly context: Context; readonly session: Session } | undefined,
+  trigger: WriteAccessTrigger,
+) => Promise<WriteAccessOutcome>
+
+/** The live agent fields this host reads when a share's capability ends with a turn still running. */
+interface LiveAgent {
+  readonly status?: string
+  cancel?: (cause: { readonly kind: 'user' }, options?: { readonly keepInbox?: boolean }) => void
+}
+
+/** The `agent` lookup provider, as much of it as this host reads. */
+interface AgentLookupProvider {
+  /** @param sessionId - Session identity the composition resolves to its live Agent. */
+  resolve(sessionId: string): unknown
+}
+
+/**
+ * Bring one Session's Agent up through the composition's own activation path and wait for it.
+ *
+ * The Session is resolved or resumed exactly as an ordinary Host request resolves it — preset
+ * composition, model-selection installation, then publication — so every plugin that installs itself
+ * from the `agent/created` announcement has run by the time this settles. That is what makes this host
+ * safe to call before it drives a Session whose Agent may have been activated in an earlier process.
+ *
+ * The capability is the merge-declared `agent` lookup: its resolver belongs to the composition, and the
+ * API Session controller points it at the same activation path its own endpoints use. Reading it here
+ * keeps this bundle free of any dependency on those endpoints, and a deployment that installs no such
+ * lookup is refused loudly rather than silently treated as activated.
+ * @param ctx - Host context carrying the Typert lookup registry.
+ * @param sessionId - Session to resolve or resume.
+ * @throws when this deployment installs no agent lookup, or the lookup activates no Agent.
+ */
+export async function activateSession(ctx: Context, sessionId: string): Promise<void> {
+  const typert = ctx.get('typert') as
+    | { readonly lookups?: { get?: (key: string) => AgentLookupProvider | undefined } }
+    | undefined
+  const provider = typert?.lookups?.get?.('agent')
+  if (provider === undefined) {
+    throw new Error(`this host cannot activate session ${sessionId}: no agent lookup is registered`)
+  }
+  const agent = await provider.resolve(sessionId)
+  if (agent === undefined) {
+    throw new Error(`activating session ${sessionId} failed: the agent lookup answered with nothing`)
+  }
+}
+
+/**
+ * The paths one tool call names, as every enforcement installation in this host reads them.
+ *
+ * Each tool's own argument names are read from the shared surface, so a path-based search, an image
+ * read, and a delivery list establish their targets here; a name the surface does not admit, or
+ * arguments it cannot read, establish no path and the guard refuses the call.
+ * @param execution - The call being judged.
+ * @returns The paths it names, or nothing when they cannot be established.
+ */
+function forkToolPaths(execution: ForkToolExecution): ForkToolPaths {
+  return describeSharedTool(execution.name, execution.arguments)
+}
+
+/** Host state the source Session's access layer reads. */
+export interface SourceAccessDeps {
+  /** Host context carrying the optional Agent, filesystem, tool, and sandbox services. */
+  readonly ctx: Context
+  /** Shares this host publishes. */
+  readonly ownerShares: Map<string, OwnerShare>
+  /** Children this host created, whose turns a narrowed grant ends. */
+  readonly forks: ForkRegistry
+  /** Reads of the Relay's authority over one share. */
+  readonly relay: RelayAuthority
+  /** Whether this host has been disposed. */
+  readonly disposed: () => boolean
+  /** Tell remote access that reader answers may have changed. */
+  readonly accessChanged: () => void
+  /**
+   * Whether one tool execution belongs to a turn a share viewer started.
+   *
+   * The source layer confines those turns and leaves an owner-started one on the deployment's tools, so
+   * this is the per-execution authority both the guard and the replacements read.
+   */
+  readonly confinedExecution: (execution: ForkToolExecution) => boolean
+}
+
+/** The confined access layer and turn control one host's source Sessions carry. */
+export interface SourceAccess {
+  /**
+   * Install the access layer one share's source Session needs.
+   * @param share - Share the layer is being installed for.
+   * @param ready - The announced agent's own scope and session, when the caller has them.
+   * @param trigger - Where this attempt came from, named in the diagnostic a refusal logs.
+   * @returns What this attempt did.
+   */
+  apply(
+    share: OwnerShare,
+    ready?: { readonly context: Context; readonly session: Session },
+    trigger?: WriteAccessTrigger,
+  ): Promise<WriteAccessOutcome>
+  /**
+   * Whether one share's source Session carries a usable confined access layer right now.
+   * @param shareId - Share the request arrived through.
+   * @returns True only while the layer is installed and confined.
+   */
+  confined(shareId: string): boolean
+  /**
+   * Why one share's source Session is not confined for driving, or undefined while it is.
+   * @param shareId - Share the question is asked about.
+   * @returns The refusal code, or undefined while the source Session is confined for this share.
+   */
+  confinementRefusal(shareId: string): string | undefined
+  /**
+   * The recorded installation's own refusal code for one share's Session.
+   * @param shareId - Share whose source Session is asked about.
+   * @returns The refusal, or undefined when none was recorded.
+   */
+  refusalOf(shareId: string): string | undefined
+  /**
+   * Stop child work whose grant is being narrowed or removed.
+   * @param shareId - Share whose children are stopped.
+   * @param viewer - Only this viewer's children, when one grant ended.
+   */
+  cancelChildTurns(shareId: string, viewer?: ShareRpcActor): void
+  /**
+   * The recorded child may use only tools its share currently permits.
+   * @param childSessionId - Child whose tool is being judged.
+   * @param tool - Tool name the call names.
+   * @returns True while the child may run that tool.
+   */
+  childToolAuthorized(childSessionId: string, tool: string): boolean
+  /**
+   * Stop whatever turn one share's Session is running, when the share stops driving it.
+   *
+   * The host records only whether a turn was viewer-started, not which viewer admitted it, so it cannot
+   * tell a revoked viewer's turn from the owner's: a share that ends its grant stops the running turn
+   * itself.
+   * @param shareId - Share whose capability just ended.
+   */
+  cancelShareTurn(shareId: string): void
+  /**
+   * Make the Session's layer match its shares after one of them stopped, expired, or changed tier.
+   *
+   * A Session whose shares are all inactive loses its layer, which restores the Session's own tools; a
+   * Session whose shares no longer need the bounded write is re-installed read-only.
+   * @param sessionId - Session whose published shares changed.
+   */
+  reconcileSessionAccess(sessionId: string): void
+  /**
+   * Prepare one share's source Session for driving, waiting only for the activation it needs.
+   * @param sessionId - Session one published share names.
+   * @param trigger - Where this preparation came from.
+   */
+  prepareSourceSession(sessionId: string, trigger: WriteAccessTrigger): Promise<void>
+  /**
+   * Start preparing one share's source Session, at most once at a time, without waiting for it.
+   * @param shareId - Share one reader just asked about.
+   */
+  prepareSourceForReader(shareId: string): void
+  /**
+   * The paths one tool call names, as every enforcement installation in this host reads them.
+   * @param execution - The call being judged.
+   * @returns The paths it names, or nothing when they cannot be established.
+   */
+  forkToolPaths(execution: ForkToolExecution): ForkToolPaths
+}
+
+/**
+ * Build the confined access layer for this host's source Sessions.
+ * @param deps - Shares and the Relay authority the layer reads.
+ * @returns The access layer and turn control.
+ */
+export function createSourceAccess(deps: SourceAccessDeps): SourceAccess {
+  const ownerShares = deps.ownerShares
+  const forks = deps.forks
+  const relay = deps.relay
+
+  /**
+   * The shares over one Session that may still drive it.
+   *
+   * A stored record stays published after its deadline passes, so the deadline is part of activity: an
+   * expired share serves no viewer and must not keep the Session sandboxed.
+   * @param sessionId - Session the shares name.
+   * @returns The published, unexpired shares over it, in insertion order.
+   */
+  const activeSharesOf = (sessionId: string): OwnerShare[] =>
+    [...ownerShares.values()].filter(share => share.sessionId === sessionId && !isExpired(share.expiresAt, Date.now()))
+
+  /**
+   * Access layers this host installed, keyed by the SESSION they sandbox.
+   *
+   * One Session may be shared by several shares at either tier, and its layer belongs to the Session
+   * rather than to any one share: installing a second one would collide on the tool names, and removing
+   * a share must not take away the constraint another share still needs. The layer is write-capable when
+   * any share over that Session is, and the shares' current grants decide each operation.
+   */
+  const sourceAccess = new Map<string, SourceSessionAccessInstallation>()
+
+  /**
+   * Report one write-access attempt that installed nothing, with the guard that refused it.
+   *
+   * Every guard on this path returns without a trace by design — a share that cannot be confined must not
+   * become writable — but a silent return hid why a host served a write share with no layer at all. The
+   * line states the trigger and the guard, and nothing else: no path, no credential, no reader identity.
+   * @param share - Share the attempt was for.
+   * @param trigger - Where the attempt came from: a publish announcement, host startup, a reader's page, or
+   *   the prompt path that prepares the source.
+   * @param reason - Stable code naming the guard that refused.
+   * @returns The refusal outcome, so a caller returns it directly.
+   */
+  const refusedSourceAccess = (
+    share: OwnerShare,
+    trigger: WriteAccessTrigger,
+    reason: WriteAccessRefusal,
+  ): WriteAccessOutcome => {
+    if (process.env.LIVESHARE_VIEWER_DEBUG === '1') {
+      console.warn(
+        `[liveshare] source access not installed trigger=${trigger} share=${share.shareId}`
+        + ` session=${share.sessionId} reason=${reason}`,
+      )
+    }
+    return { kind: 'refused', reason }
+  }
+
+  /**
+   * Whether any active share over one Session may write it.
+   *
+   * The layer is per Session while the tier is per share, so the Session's layer carries the bounded write
+   * when any share over it may write.
+   * @param sessionId - Session the shares name.
+   * @returns True when at least one active share over it is at the write tier.
+   */
+  function sessionNeedsWrite(sessionId: string): boolean {
+    return activeSharesOf(sessionId).some(share => share.sessionMode === 'write')
+  }
+
+  /**
+   * Whether one of the Session's active shares still drives it at the write tier.
+   *
+   * The stored tier is the owner's answer and the Relay's statement caps it, so both are read: a share the
+   * Relay narrowed no longer writes even though the record still names the write tier.
+   * @param sessionId - Session the shares name.
+   * @returns True while some active share is at the write tier in both answers.
+   */
+  function sessionWritable(sessionId: string): boolean {
+    return sessionNeedsWrite(sessionId)
+      && activeSharesOf(sessionId).some(share => relay.drivableModeOf(share.shareId) === 'write')
+  }
+
+  /**
+   * Whether one Session's recorded layer already matches the tier its shares need.
+   *
+   * A Session shared only at the view tier needs the confined read and no write replacement, so a layer
+   * installed for a wider tier is replaced rather than kept; one any share may write needs the write
+   * replacement too. A layer that confines nothing is never usable, so a Session whose installation failed
+   * once can be installed again.
+   * @param sessionId - Session whose recorded layer is asked about.
+   * @param mode - Tier the caller needs the layer for.
+   * @returns True when the recorded installation already states exactly that tier.
+   */
+  function sourceAccessUsable(sessionId: string, mode: ViewerSessionMode): boolean {
+    const installed = sourceAccess.get(sessionId)
+    if (installed?.readConfined !== true) return false
+    return mode === 'write' ? installed.writeConfined : !installed.writeConfined
+  }
+
+  /**
+   * Install the access layer one share's source Session needs.
+   *
+   * The Session must be live and scoped: the layer is registered into its own scope and confines every
+   * turn of that Session. Anything the host cannot resolve — no live agent, no scope, no granted workspace
+   * — installs nothing, and a share with no layer drives nothing.
+   * @param share - Share the layer is being installed for.
+   * @param ready - The announced agent's own scope and session, supplied by the `agent/created` listener
+   *   so the layer is installed against exactly the agent whose announcement is running.
+   * @param trigger - Where this attempt came from, named in the diagnostic a refusal logs.
+   */
+  const applySourceAccess = async (
+    share: OwnerShare,
+    ready?: { readonly context: Context; readonly session: Session },
+    trigger: WriteAccessTrigger = 'prompt',
+  ): Promise<WriteAccessOutcome> => {
+    // A layer that already meets the widest tier this Session needs is kept: several shares over one
+    // Session share the one installation. An installation that could not confine anything is replaced
+    // rather than kept, so a Session whose layer failed once — because it was not live yet, for instance
+    // — can still get one.
+    const wanted = sessionNeedsWrite(share.sessionId) ? 'write' : 'view'
+    const active = activeSharesOf(share.sessionId)
+    const recorded = sourceAccess.get(share.sessionId)
+    if (active.length > 0 && sourceAccessUsable(share.sessionId, wanted) && recorded !== undefined) {
+      return { kind: 'kept', installation: recorded }
+    }
+    recorded?.dispose()
+    sourceAccess.delete(share.sessionId)
+    // Every service is read through the context lookup: this bundle declares only `connection`, so a
+    // property access for another service is a Cordis injection error at runtime, casts or not.
+    const agents = deps.ctx.get('agents') as
+      | { get?: (id: string) => { readonly ctx?: unknown; readonly session?: unknown } | undefined }
+      | undefined
+    const live = ready === undefined ? agents?.get?.(share.sessionId) : undefined
+    const session = (ready?.session ?? live?.session) as Session | undefined
+    const liveContext = (ready?.context ?? live?.ctx) as Context | undefined
+    const fs = deps.ctx.get('fs') as ForkEnforcementFs | undefined
+    const tools = deps.ctx.get('tools') as ForkToolRegistry | undefined
+    const sandboxPolicy = deps.ctx.get('sandboxPolicy') as
+      | { resolve: (request: { session: Session }) => SandboxExecutionPolicy }
+      | undefined
+    const resolved = session === undefined ? undefined : sandboxPolicy?.resolve({ session })
+    const root = resolved?.workspaceRoot
+    const cwd = session?.header.cwd
+    // The layer is registered into the Session's own SCOPE, which is a scope key rather than the Session:
+    // tool lookup walks scope layers, so a Session-object stand-in would resolve the wrong definitions.
+    const scopeKey = liveContext === undefined ? undefined : scopeOf(liveContext)
+    if (session === undefined) return refusedSourceAccess(share, trigger, 'no-live-session')
+    if (liveContext === undefined) return refusedSourceAccess(share, trigger, 'no-live-context')
+    if (scopeKey === undefined) return refusedSourceAccess(share, trigger, 'no-session-scope')
+    if (fs === undefined) return refusedSourceAccess(share, trigger, 'no-filesystem')
+    if (tools === undefined) return refusedSourceAccess(share, trigger, 'no-tool-registry')
+    if (sandboxPolicy === undefined) return refusedSourceAccess(share, trigger, 'no-sandbox-policy')
+    if (typeof root !== 'string') return refusedSourceAccess(share, trigger, 'no-workspace-root')
+    if (cwd === undefined) return refusedSourceAccess(share, trigger, 'no-session-cwd')
+    const granted = await fs.resolve(root).catch(() => undefined)
+    if (granted === undefined) return refusedSourceAccess(share, trigger, 'workspace-unresolved')
+    // Awaited, and confirmed against the share it was requested for: a share re-published with another
+    // Session, or one whose mode narrowed, must not leave an installation behind. The check reads those
+    // two invariants rather than the share's revision counter: a title reconcile and a Relay authority
+    // refresh bump that counter without changing what this layer confines, so abandoning an installation
+    // for one of them left a write share with no layer at all, which no later path retried.
+    const current = ownerShares.get(share.shareId)
+    if (current === undefined) return refusedSourceAccess(share, trigger, 'share-gone')
+    if (current.sessionId !== share.sessionId) return refusedSourceAccess(share, trigger, 'share-reassigned')
+    // The Session still has to be shared at some tier, and the tier the caller asked for has to still be
+    // one this Session needs: a share removed while the workspace resolved installs nothing.
+    const needsWrite = sessionNeedsWrite(share.sessionId)
+    if (needsWrite !== (wanted === 'write')) return refusedSourceAccess(share, trigger, 'share-mode-changed')
+    // Every share over the Session stopped or expired while the workspace resolved: nothing remains that
+    // could drive it, so no layer is installed.
+    if (activeSharesOf(share.sessionId).length === 0) return refusedSourceAccess(share, trigger, 'share-inactive')
+    // Another installation can finish while the workspace resolves. Publication below is synchronous.
+    const concurrent = sourceAccess.get(share.sessionId)
+    if (sourceAccessUsable(share.sessionId, wanted) && concurrent !== undefined) {
+      return { kind: 'kept', installation: concurrent }
+    }
+    concurrent?.dispose()
+    sourceAccess.delete(share.sessionId)
+    const installation = installSourceSessionAccess({
+      sessionId: share.sessionId,
+      context: liveContext,
+      scope: scopeKey,
+      grantedRoot: granted,
+      cwd,
+      fs,
+      tools,
+      describe: forkToolPaths,
+      confinedExecution: deps.confinedExecution,
+      resolvePolicy: () => sandboxPolicy.resolve({ session }),
+      // The write replacement is registered once for the Session, whenever any share over it may write.
+      // Whether writing is still allowed is read from the Session's shares when a write runs, so a share
+      // that narrows to view stops writing on the layer that is already mounted.
+      ...(needsWrite ? { write: { mayWrite: () => sessionWritable(share.sessionId) } } : {}),
+      // Every operation re-reads the grants of the shares that keep this Session drivable, so an input
+      // queued past the grant that admitted it cannot act on the stale admission.
+      refreshAuthorization: async () => {
+        for (const current of activeSharesOf(share.sessionId)) await relay.refreshRelayAccess(current.shareId)
+      },
+    })
+    // Recorded whether or not it is usable: the guard it installed still has to be released, and the
+    // reader asks this record whether the source Session is confined before it drives any prompt.
+    sourceAccess.set(share.sessionId, installation)
+    deps.accessChanged()
+    liveContext.effect(() => () => {
+      installation.dispose()
+      if (sourceAccess.get(share.sessionId) === installation) sourceAccess.delete(share.sessionId)
+      deps.accessChanged()
+    }, 'liveshare: source enforcement lifetime')
+    const registrationFailure = installation.registrationFailure
+    if (!installation.readConfined) {
+      console.warn(
+        `[liveshare] source session not confined share=${share.shareId}`
+        // A read that confined nothing always records why; the record keeps that refusal.
+        + ` refusal=${installation.refusal}`
+        + (registrationFailure === undefined ? '' : ` error=${errorMessage(registrationFailure.error)}`),
+      )
+    } else if (registrationFailure !== undefined) {
+      // The read is confined but another replacement is not, so that tool stays refused. A failed write
+      // replacement also leaves a write-tier share refused by `layer-write-unconfined`; this states why
+      // the scope would not take it.
+      console.warn(
+        `[liveshare] source session ${registrationFailure.tool} not confined share=${share.shareId}`
+        + ` error=${errorMessage(registrationFailure.error)}`,
+      )
+    } else if (process.env.LIVESHARE_VIEWER_DEBUG === '1') {
+      console.warn(
+        `[liveshare] source access installed trigger=${trigger} share=${share.shareId}`
+        + ` session=${share.sessionId} tier=${wanted}`,
+      )
+    }
+    return { kind: 'installed', installation }
+  }
+
+  /**
+   * Whether one share's source Session carries a usable confined access layer right now.
+   *
+   * A prompt that drives that Session is refused unless this holds, so a share whose layer could not be
+   * installed — or whose Session is not live yet — is never driven against the owner's own tools.
+   * @param shareId Share the request arrived through.
+   * @returns True only while the layer is installed and confined.
+   */
+  function sourceConfined(shareId: string): boolean {
+    return sourceConfinementRefusal(shareId) === undefined
+  }
+
+  /**
+   * Why one share's source Session is not confined for driving, or undefined while it is.
+   *
+   * The answer is the first guard that refuses, as a stable code, so a host can state why a share
+   * carried no layer instead of only that it did not. Both tiers drive the Session, so both need the
+   * confined read; only the write tier needs the confined write beside it.
+   * @param shareId - Share the question is asked about.
+   * @returns The refusal code, or undefined while the source Session is confined for this share.
+   */
+  function sourceConfinementRefusal(shareId: string): string | undefined {
+    const share = ownerShares.get(shareId)
+    if (share === undefined) return 'share-unknown'
+    // The share's own answer is part of it: a share whose deadline passed is not confined for driving,
+    // whatever layer its Session still carries. Until the Relay states a tier, this host cannot tell
+    // which one the share carries and drives nothing.
+    const mode = relay.drivableModeOf(shareId)
+    if (mode === undefined) return 'share-mode-unknown'
+    const access = sourceAccess.get(share.sessionId)
+    if (access === undefined) return 'layer-absent'
+    if (!access.readConfined) return 'layer-read-unconfined'
+    if (mode === 'write' && !access.writeConfined) return 'layer-write-unconfined'
+    return undefined
+  }
+
+  /** The recorded installation's own refusal code for one share's Session. */
+  function refusalOf(shareId: string): string | undefined {
+    const share = ownerShares.get(shareId)
+    if (share === undefined) return undefined
+    return sourceAccess.get(share.sessionId)?.refusal
+  }
+
+  /** Stop child work whose grant is being narrowed or removed. */
+  function cancelChildTurns(shareId: string, viewer?: ShareRpcActor): void {
+    const agents = deps.ctx.get('agents')
+    for (const child of forks.listForShare(shareId)) {
+      if (viewer !== undefined && identityKeyOf(child.creator) !== identityKeyOf(viewer)) continue
+      agents?.get(child.childSessionId as SessionId)?.cancel({ kind: 'user' })
+    }
+  }
+
+  /** The recorded child may use only tools its share currently permits. */
+  function childToolAuthorized(childSessionId: string, tool: string): boolean {
+    const child = forks.find(childSessionId)
+    if (deps.disposed() || child === undefined || child.revokedAt !== undefined) return false
+    const share = ownerShares.get(child.shareId)
+    const mode = relay.drivableModeOf(child.shareId)
+    if (share === undefined || isExpired(share.expiresAt, Date.now())
+      || !relay.viewerAdmitted(child.shareId, child.creator) || mode === undefined) return false
+    // A child runs under its own view ceiling; the write tier is what lets its turn reach the bounded
+    // write and edit this host installs for it. A name the shared surface does not admit is never one
+    // this host installed a replacement for, so the answer is no whatever the tier says.
+    const profile = sharedToolProfile(tool)
+    return profile !== undefined && (profile.tier === 'view' || mode === 'write')
+  }
+
+  /**
+   * Stop whatever turn one share's Session is running.
+   *
+   * Revoking a share's capability unestablishes the work it admitted, but the host does not attribute a
+   * turn to the requester that admitted it: the running turn is stopped with the same cancellation the
+   * owner's own Stop command uses. Nothing already written is undone; a turn that has not started yet is
+   * refused by the sandbox instead.
+   * @param shareId - Share whose capability just ended.
+   */
+  const cancelShareTurn = (shareId: string): void => {
+    const share = ownerShares.get(shareId)
+    if (share === undefined) return
+    const agents = deps.ctx.get('agents') as
+      | { get?: (id: string) => LiveAgent | undefined }
+      | undefined
+    const live = agents?.get?.(share.sessionId)
+    if (live === undefined || live.status !== 'running') return
+    console.warn(`[liveshare] cancelling source turn share=${shareId}`)
+    live.cancel?.({ kind: 'user' }, { keepInbox: true })
+  }
+
+  /**
+   * Make one Session's layer match the shares it still has.
+   *
+   * The layer belongs to the Session, so it ends only when the Session has no active share left: a Session
+   * whose shares all stopped or expired gets its own tools back. A Session whose remaining shares no longer
+   * need the bounded write is re-installed read-only, so a downgraded share leaves no write name behind.
+   * @param sessionId - Session whose published shares changed.
+   */
+  function reconcileSessionAccess(sessionId: string): void {
+    const shares = activeSharesOf(sessionId)
+    const [target] = shares
+    // No active share left: the Session keeps no sandbox, so its own tools come back.
+    if (target === undefined) {
+      const installed = sourceAccess.get(sessionId)
+      if (installed === undefined) return
+      installed.dispose()
+      sourceAccess.delete(sessionId)
+      deps.accessChanged()
+      return
+    }
+    const wanted = shares.some(share => share.sessionMode === 'write') ? 'write' : 'view'
+    if (sourceAccessUsable(sessionId, wanted)) return
+    // Any share over the Session installs what the whole Session needs: the installation reads the tier
+    // from the shares, not from the record it was asked with.
+    void applySourceAccess(target, undefined, 'mode')
+  }
+
+  /**
+   * Prepare one share's source Session for driving, waiting only for the activation it needs.
+   *
+   * Preparing the source Session is the same owner-side activation a child gets: resolving or resuming it
+   * announces the agent, whose `agent/created` listener installs a share's layer. A Session whose agent
+   * was already live when this host mounted ran that listener once — possibly before this host could
+   * install anything, which is how a first attempt fails and a later one stays refused — so the layer is
+   * installed here as well, under the authorization in force at this moment: the share must still be
+   * published, still name this Session, and still name a tier.
+   * @param sessionId - Session one published share names.
+   * @param trigger - Where this preparation came from, named in the diagnostic a refusal logs.
+   * @returns after an installation is recorded, or after the share stopped qualifying for one.
+   */
+  const prepareSourceSession = async (sessionId: string, trigger: WriteAccessTrigger): Promise<void> => {
+    await activateSession(deps.ctx, sessionId)
+    // The share's own record says whether a layer is needed; the Relay's narrowing tier only says whether
+    // one may already be driven. Requiring the narrowing answer here would refuse to prepare exactly the
+    // share whose Relay answer has not arrived yet, which is the one a reader is waiting on.
+    const share = [...ownerShares.values()].find(candidate => candidate.sessionId === sessionId)
+    if (share === undefined) return
+    if (sourceAccessUsable(sessionId, share.sessionMode)) return
+    await applySourceAccess(share, undefined, trigger)
+  }
+
+  /** One preparation in flight per Session, so repeated reader requests wait on the same activation. */
+  const preparingSources = new Map<string, Promise<void>>()
+
+  /**
+   * Start preparing one share's source Session, at most once at a time, without waiting for it.
+   *
+   * A host that restarted with a restored share installed no layer during startup, because that
+   * Session's agent was not live yet, and the reader's snapshot then carried no driving action: the
+   * composer stayed inert, so the prompt path that prepares the source was never reached. The reader's
+   * own snapshot entries start the preparation instead. A recorded installation re-pushes every open
+   * snapshot, so a page already following its access stream gains the actions without a reload, and no
+   * reader request waits on it: a preparation that fails, or one that never settles, leaves the share
+   * exactly as refused as it already was.
+   * @param shareId - Share one reader just asked about.
+   */
+  function prepareSourceForReader(shareId: string): void {
+    if (deps.disposed()) return
+    const share = ownerShares.get(shareId)
+    if (share === undefined) return
+    // Nothing to prepare while the layer is usable. Otherwise the share's own record says whether one is
+    // needed, because the Relay's narrowing tier may not have arrived yet: a Reader request must not be
+    // the one that waits for it, and every reason this host declines to prepare is worth naming.
+    const confinement = sourceConfinementRefusal(shareId)
+    if (confinement === undefined) return
+    if (confinement !== 'layer-absent' && confinement !== 'layer-read-unconfined' && confinement !== 'layer-write-unconfined') {
+      // A tier the Relay has not stated is still a layer this host has to be ready with, because the
+      // share's own record names one and the reader is waiting on that answer to arrive.
+      /* v8 ignore next 7 -- share-unknown is ruled out by the lookup above, so only an unstated tier remains. */
+      if (confinement !== 'share-mode-unknown') {
+        if (process.env.LIVESHARE_VIEWER_DEBUG === '1') {
+          console.warn(
+            `[liveshare] source not prepared trigger=reader share=${shareId}`
+            + ` session=${share.sessionId} reason=${confinement}`,
+          )
+        }
+        return
+      }
+    }
+    if (preparingSources.has(share.sessionId)) return
+    const started = prepareSourceSession(share.sessionId, 'reader')
+      .catch((error: unknown) => {
+        // A failed preparation changes nothing: the share stays refused and the reader keeps reading.
+        console.warn(
+          `[liveshare] preparing the source failed share=${shareId}: ${errorMessage(error)}`,
+        )
+      })
+      .finally(() => { preparingSources.delete(share.sessionId) })
+    preparingSources.set(share.sessionId, started)
+  }
+
+  return {
+    apply: applySourceAccess,
+    confined: sourceConfined,
+    confinementRefusal: sourceConfinementRefusal,
+    refusalOf,
+    cancelChildTurns,
+    childToolAuthorized,
+    cancelShareTurn,
+    reconcileSessionAccess,
+    prepareSourceSession,
+    prepareSourceForReader,
+    forkToolPaths,
+  }
+}
+
+/**
+ * Read one caught value's message for a diagnostic this host logs.
+ * @param error - Value a dependency threw.
+ * @returns The error's message, or the value's own string form.
+ */
+function errorMessage(error: unknown): string {
+  return error instanceof Error ? error.message : String(error)
+}
diff --git a/packages/experimental/liveshare/src/host/tunnel-supervision.ts b/packages/experimental/liveshare/src/host/tunnel-supervision.ts
new file mode 100644
index 0000000000..b2a6b38ecb
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/tunnel-supervision.ts
@@ -0,0 +1,952 @@
+/**
+ * Worker supervision for one owner host: registration replay, heartbeats, expiry timers, and rows owed.
+ *
+ * The gateway worker process carries every share this host publishes, so this module owns its
+ * lifetime: the commands sent over IPC, the settlements that resolve a pending registration, the
+ * timers that re-register or remove a share, and the credential state each registration presents.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/tunnel-supervision
+ */
+
+import { randomBytes } from 'node:crypto'
+import { base64Url } from './base64-url.ts'
+import { readFileSync } from 'node:fs'
+import { fileURLToPath } from 'node:url'
+import type { Context } from '@deepseek-ai/cordis'
+import type { IdentityActor, TunnelShareSpec, TunnelWorkerEvent } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type {
+  ClaimOutcome,
+  OwnerIdentityStatus,
+} from '../owner-identity.ts'
+import { identitySubjectLabel } from '../owner-identity.ts'
+import { relayRefusalStatus } from '../owner-gateway/relay-refusal.ts'
+import type { RelayConnectivityView, RelayPublishView } from '../share-api-types.ts'
+import { parseViewerRequest } from '../viewer-channel.ts'
+import type { ViewerSessionMode } from './fork-policy.ts'
+import type { PendingRelayRemoval } from './owner-persistence.ts'
+import {
+  ownerCredentialState,
+  reportedOwnerCredentialExpiry,
+  saveOwnerCredential,
+  type StoredOwnerCredential,
+} from './owner-credential-file.ts'
+import type { OwnerShare } from './owner-types.ts'
+import type { RelayAuthority } from './relay-authority.ts'
+import { normalizeRelayUrl } from './relay-url.ts'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { ViewerReadService } from './viewer-read.ts'
+import { TunnelWorker, type TunnelWorkerInput } from './tunnel-worker.ts'
+import { isRecord } from './wire-json.ts'
+
+/** Longest wait one timer may take; a deadline beyond it is waited for in steps. */
+const MAX_EXPIRY_TIMER_MS = 2 ** 31 - 1
+
+/** How long one stopped share's Relay deletion waits before this host tries it again. */
+const PENDING_REMOVAL_RETRY_MS = 30_000
+
+/** Longest wait between two attempts, so a Relay that never returns is asked less and less often. */
+const PENDING_REMOVAL_MAX_WAIT_MS = 30 * 60_000
+
+/** One registration this host is waiting to settle. */
+interface PendingShare {
+  readonly resolve: (result: { ok: boolean; error?: string }) => void
+  readonly timer: ReturnType<typeof setTimeout>
+}
+
+/** Fields one gateway registration needs from a share, before it is stored as an OwnerShare. */
+type ShareRegistrationSource = Pick<
+  OwnerShare,
+  'shareId' | 'sessionId' | 'sessionTitle' | 'accessMode' | 'relay' | 'gatewayToken' | 'allowedSubjectIds'
+> & {
+  readonly expiresAt?: string
+  readonly allowsFork: boolean
+  readonly sessionMode: ViewerSessionMode
+}
+
+/** Node process and argv that start the owner gateway worker. */
+export interface TunnelProcessCommand {
+  readonly executable: string
+  readonly args: readonly string[]
+}
+
+/**
+ * Resolve the gateway worker entry beside the running host module.
+ * A source checkout loads this module from `src/host/`, while the bundled host is the package's
+ * `lib/index.js` entry and ships the worker as `lib/owner-gateway/cli.js`.
+ * @param moduleUrl - `import.meta.url` of the running host module.
+ * @returns Node executable and argv that start the owner gateway worker.
+ */
+export function gatewayWorkerCommand(moduleUrl: string): TunnelProcessCommand {
+  if (fileURLToPath(moduleUrl).endsWith('.ts')) {
+    return {
+      executable: process.execPath,
+      args: ['--import', 'tsx/esm', fileURLToPath(new URL('../owner-gateway/cli.ts', moduleUrl))],
+    }
+  }
+  return {
+    executable: process.execPath,
+    args: [fileURLToPath(new URL('./owner-gateway/cli.js', moduleUrl))],
+  }
+}
+
+function tunnelCommand(): TunnelProcessCommand {
+  return gatewayWorkerCommand(import.meta.url)
+}
+
+/** Owner state, credential, and worker channels one host's registration and timers read. */
+export interface TunnelSupervisionDeps {
+  /** Host context, read for the optional title services the reconcile step uses. */
+  readonly ctx: Context
+  /** Shares this host publishes; registration replay walks them. */
+  readonly ownerShares: Map<string, OwnerShare>
+  /** Relay rows this host stopped but has not deleted. */
+  readonly pendingRemovals: Map<string, PendingRelayRemoval>
+  /** This owner instance's id, carried by every registration. */
+  readonly instanceId: string
+  /** Subjects this deployment admits to every share. */
+  readonly allowedSubjectIds: readonly string[]
+  /** Owner identity fields every registration carries, when this host has an identity. */
+  readonly ownerContext: { readonly ownerProviderId?: string; readonly ownerTenantId?: string }
+  /** This host's own identity, used when a credential carries no name. */
+  readonly ownerIdentity: IdentityActor | undefined
+  /** Relay authority reads and adopted state. */
+  readonly relay: RelayAuthority
+  /** The viewer reader, answered for forwarded requests. */
+  readonly viewerRead: () => ViewerReadService
+  /** Tell remote access that reader answers may have changed. */
+  readonly accessChanged: () => void
+  /** Stop whatever turn one share's Session is running. */
+  readonly cancelShareTurn: (shareId: string) => void
+  /** Reconcile one Session's sandbox after a share stopped or expired. */
+  readonly reconcileSourceAccess: (sessionId: string) => void
+  /** Stop child work whose grant is narrowed or removed. */
+  readonly cancelChildTurns: (shareId: string, viewer?: ShareRpcActor) => void
+  /** Whether this host has been disposed. */
+  readonly disposed: () => boolean
+  /** Owner credential file, written when a Relay reports a horizon. */
+  readonly ownerCredentialFile: string
+  /** Credential this host holds now. */
+  readonly storedCredential: () => StoredOwnerCredential | undefined
+  /** Replace the credential this host holds. */
+  readonly setStoredCredential: (credential: StoredOwnerCredential) => void
+  /** Persist this host's owner state. */
+  readonly persistOwnerState: () => Promise<void>
+}
+
+/** Worker lifecycle, registration replay, credential state, and timers for one owner host. */
+export interface TunnelSupervision {
+  /**
+   * Send one command to the gateway worker, starting it when it is not running.
+   * @param command - Command the worker carries out.
+   */
+  send(command: TunnelWorkerInput): void
+  /**
+   * Wait for one registration to settle.
+   * @param shareId - Share the registration named.
+   * @param timeoutMs - Longest wait before the registration is reported as timed out.
+   * @returns The worker's settlement for that registration.
+   */
+  waitForShare(shareId: string, timeoutMs: number): Promise<{ ok: boolean; error?: string }>
+  /**
+   * Build the worker's registration for one owner share.
+   * @param share - Share or throwaway registration to publish.
+   * @param credential - Credential captured by the operation.
+   * @returns The registration payload.
+   */
+  shareSpec(share: ShareRegistrationSource, credential: StoredOwnerCredential | undefined): TunnelShareSpec
+  /**
+   * Arm the cancellation that stops a share's running turn the moment the share expires.
+   * @param share - Share to arm or re-arm.
+   */
+  scheduleShareExpiry(share: OwnerShare): void
+  /**
+   * Disarm the deadline of a share that is no longer published.
+   * @param shareId - Share whose deadline is disarmed.
+   */
+  clearShareExpiry(shareId: string): void
+  /**
+   * Delete the Relay rows this host still owes.
+   */
+  flushPendingRemovals(): Promise<void>
+  /** Arm the next attempt for the rows still owed, or disarm when none are left. */
+  armPendingRemovalRetry(): void
+  /**
+   * Delete one share's row from the Relay that carries it.
+   * @param relay - Relay base URL the row belongs to.
+   * @param shareId - Share whose row is deleted.
+   * @param gatewayToken - Management token the Relay authorizes the deletion with.
+   * @returns True when the Relay removed the row, or already carried none.
+   */
+  deleteRelayRow(relay: string, shareId: string, gatewayToken: string): Promise<boolean>
+  /**
+   * Refresh every share's recorded title from the Session's own title fold.
+   */
+  reconcileShareTitles(): Promise<void>
+  /**
+   * Per-Relay facts this host has learned.
+   * @param relay - Relay address the facts describe.
+   * @returns The facts for that normalized address.
+   */
+  factsFor(relay: string): { supportsCredentials?: boolean; claim?: ClaimOutcome }
+  /**
+   * Ask the Relay whether it binds owner identity, and what horizon it grants the credential held.
+   * @param relay - Relay base URL to probe.
+   */
+  probeRelayCredentialSupport(relay: string): Promise<void>
+  /**
+   * Bind this host's existing shares to its verified identity.
+   * @param relay - Normalized Relay address the credential was issued for.
+   * @param credential - Credential captured by the operation, absent when the host is unverified.
+   * @returns How many shares this pass bound and how many were already bound to this identity.
+   */
+  claimOwnedShares(relay: string, credential: string | undefined): Promise<ClaimOutcome>
+  /**
+   * Credential currently usable for one Relay address.
+   * @param relay - Relay address the credential was bound to.
+   * @param credential - Credential this host holds.
+   * @returns The credential, or undefined when this host does not judge it usable there.
+   */
+  credentialForRelay(relay: string, credential: StoredOwnerCredential | undefined): string | undefined
+  /**
+   * Credential stored for one Relay address, whether or not this host still judges it unexpired.
+   * @param relay - Relay address the credential was bound to.
+   * @returns The credential, or undefined when none is stored for that address.
+   */
+  claimableCredentialForRelay(relay: string): string | undefined
+  /**
+   * Register this host's shares for one Relay address again when they are not connected.
+   * @param relay - Normalized Relay address the credential was issued for.
+   * @param credential - Credential just committed for that address.
+   */
+  reregisterOfflineShares(relay: string, credential: StoredOwnerCredential): void
+  /**
+   * Check that one Relay answers at all.
+   * @param relay - Relay address to check.
+   * @returns The anonymous connectivity result.
+   */
+  probeRelayConnectivity(relay: string): Promise<RelayConnectivityView>
+  /**
+   * Register one throwaway share to check whether this host may publish.
+   * @param relay - Relay address to probe.
+   * @param share - Throwaway registration to carry.
+   * @returns The Relay's decision about this host's credential.
+   */
+  probeRelayPublish(relay: string, share: Omit<TunnelShareSpec, 'shareId'>): Promise<RelayPublishView>
+  /**
+   * Owner identity state for one Relay address, without exposing the credential itself.
+   * @param relay - Relay address to report.
+   * @param extra - Renewal or claim facts to include.
+   * @param credential - Credential this host holds.
+   * @returns The owner identity status.
+   */
+  ownerIdentityStatus(
+    relay: string,
+    extra: { readonly renewed?: boolean; readonly claim?: ClaimOutcome },
+    credential: StoredOwnerCredential | undefined,
+  ): OwnerIdentityStatus
+  /**
+   * Stop the worker and release every timer and pending registration this module holds.
+   * @param closeViewer - Releases the viewer reader at its point in the shutdown order.
+   */
+  dispose(closeViewer: () => void): Promise<void>
+}
+
+function nonEmpty(value: string | undefined): string | undefined {
+  return value === undefined || value === '' ? undefined : value
+}
+
+/**
+ * Version of this owner bundle, read from the manifest beside the source file or the built entry.
+ * It is the only version this process can report without asking the host.
+ * @returns The bundle version, or undefined when no manifest is readable.
+ */
+function bundleVersion(): string | undefined {
+  for (const candidate of ['../package.json', '../../package.json']) {
+    try {
+      const parsed: unknown = JSON.parse(readFileSync(new URL(candidate, import.meta.url), 'utf8'))
+      if (isRecord(parsed) && typeof parsed.version === 'string' && parsed.version !== '') {
+        return parsed.version
+      }
+    } catch (_noManifestBesideThisEntry) {
+      continue
+    }
+  }
+  /* v8 ignore next -- the package manifest ships beside both entries this reads it from. */
+  return undefined
+}
+
+/**
+ * Title one share should adopt after reading its Session.
+ * @param recorded - Title stored on the share when it was created or last refreshed.
+ * @param current - Title the Session's own title fold reports.
+ * @returns The replacement title, or undefined when the Session reports none or the same one.
+ */
+export function refreshedShareTitle(recorded: string, current: unknown): string | undefined {
+  return typeof current === 'string' && current !== '' && current !== recorded ? current : undefined
+}
+
+/** Optional Session lookup: a profile without it keeps each share's recorded title. */
+interface SessionLookup {
+  get(sessionId: string): unknown
+}
+
+/** Optional title fold: read by the Session object the lookup above returned. */
+interface SessionTitleLookup {
+  get(session: unknown): { readonly title?: unknown } | undefined
+}
+
+/**
+ * Render a failed Relay request as the owner-facing diagnosis.
+ *
+ * The share dialog prints this text unchanged, so it carries the transport cause (TLS trust, DNS,
+ * refused connection, timeout) instead of a summary the owner cannot act on.
+ * @param error - Rejection raised by the Relay request.
+ * @returns The cause, prefixed with the runtime's error code when it reports one.
+ */
+function describeTransportFailure(error: unknown): string {
+  const cause = error instanceof Error && error.cause !== undefined ? error.cause : error
+  if (cause instanceof Error) {
+    const code = (cause as { code?: unknown }).code
+    return typeof code === 'string' ? `${code}: ${cause.message}` : cause.message
+  }
+  return String(cause)
+}
+
+/**
+ * Build the worker supervisor for one owner host.
+ * @param deps - Shares, credential state, viewer reader, and persistence.
+ * @returns Worker lifecycle, registration replay, credential state, and timers.
+ */
+export function createTunnelSupervision(deps: TunnelSupervisionDeps): TunnelSupervision {
+  const pending = new Map<string, PendingShare>()
+  const forwardedRequests = new Map<string, AbortController>()
+  const forwardedTasks = new Set<Promise<void>>()
+  const expiryTimers = new Map<string, ReturnType<typeof setTimeout>>()
+  let worker: TunnelWorker | undefined
+  let pendingRemovalTimer: ReturnType<typeof setTimeout> | undefined
+  let pendingRemovalWait = PENDING_REMOVAL_RETRY_MS
+  const dshVersion = bundleVersion()
+
+  const settle = (event: TunnelWorkerEvent): void => {
+    if (event.type === 'share-access-state') {
+      deps.relay.applyRelayAccess(event.shareId, event)
+      return
+    }
+    if (event.type === 'share-rpc-cancel') {
+      forwardedRequests.get(event.token)?.abort(new Error('Relay request ended'))
+      return
+    }
+    if (event.type === 'share-rpc-request') {
+      const request = parseViewerRequest(event.body)
+      if (request === undefined) {
+        send({
+          type: 'share-rpc-response',
+          token: event.token,
+          id: event.id,
+          shareId: event.shareId,
+          status: 400,
+          body: { error: 'invalid viewer request' },
+        })
+        return
+      }
+      const controller = new AbortController()
+      forwardedRequests.set(event.token, controller)
+      const task = deps.viewerRead().answer(event.shareId, request, event.actor, controller.signal)
+        .then((result) => {
+          if (controller.signal.aborted) return
+          send({ type: 'share-rpc-response', token: event.token, id: event.id,
+            shareId: event.shareId, status: result.status, body: result.body })
+        })
+        .catch((error: unknown) => {
+          if (controller.signal.aborted) return
+          console.error(`[liveshare] viewer read failed share=${event.shareId}: ${error instanceof Error ? error.message : String(error)}`)
+          send({
+            type: 'share-rpc-response',
+            token: event.token,
+            id: event.id,
+            shareId: event.shareId,
+            status: 500,
+            body: { error: 'viewer-read-failed' },
+          })
+        })
+        .finally(() => {
+          if (forwardedRequests.get(event.token) === controller) forwardedRequests.delete(event.token)
+          forwardedTasks.delete(task)
+        })
+      forwardedTasks.add(task)
+      return
+    }
+    if (event.type === 'share-connected') {
+      deps.relay.forgetRelayAccess(event.shareId)
+      const share = deps.ownerShares.get(event.shareId)
+      if (share !== undefined) share.online = true
+      // A share the Relay admitted proves this host can reach it, so the rows it owes may go now.
+      void flushPendingRemovals()
+    } else if (event.type === 'share-error' || event.type === 'share-closed') {
+      deps.relay.invalidateRelayAccess(event.shareId)
+      const share = deps.ownerShares.get(event.shareId)
+      if (share !== undefined) share.online = false
+      // A share restored from owner state has no waiter to receive this, so the reason a share is
+      // offline would otherwise exist only inside the worker. Recording it is what makes a share that
+      // never came back diagnosable from the owner side.
+      if (event.type === 'share-error') {
+        console.warn(`[liveshare] share offline share=${event.shareId} reason=${event.message}`)
+      }
+    }
+    if (event.type !== 'share-connected' && event.type !== 'share-error') return
+    const entry = pending.get(event.shareId)
+    if (entry === undefined) return
+    pending.delete(event.shareId)
+    clearTimeout(entry.timer)
+    entry.resolve(event.type === 'share-connected'
+      ? { ok: true }
+      : { ok: false, ...(event.message === '' ? {} : { error: event.message }) })
+  }
+
+  const ensureWorker = (): TunnelWorker => {
+    if (worker !== undefined) return worker
+    worker = new TunnelWorker({ command: tunnelCommand() })
+    worker.onEvent(settle)
+    worker.start()
+    return worker
+  }
+
+  const send = (command: TunnelWorkerInput): void => {
+    if (command.type === 'remove-share') deps.relay.invalidateRelayAccess(command.shareId)
+    ensureWorker().send(command)
+  }
+
+  const waitForShare = (
+    shareId: string,
+    timeoutMs: number,
+  ): Promise<{ ok: boolean; error?: string }> => {
+    return new Promise((resolve) => {
+      const timer = setTimeout(() => {
+        pending.delete(shareId)
+        resolve({ ok: false, error: 'gateway-timeout' })
+      }, timeoutMs)
+      pending.set(shareId, { resolve, timer })
+    })
+  }
+
+  const scheduleShareExpiry = (share: OwnerShare): void => {
+    const armed = expiryTimers.get(share.shareId)
+    if (armed !== undefined) clearTimeout(armed)
+    expiryTimers.delete(share.shareId)
+    const at = share.expiresAt === undefined ? undefined : Date.parse(share.expiresAt)
+    if (at === undefined || !Number.isFinite(at)) return
+    armShareExpiry(share.shareId, share.sessionId, at - Date.now())
+  }
+
+  /** One wait for a deadline, re-armed when the deadline is further away than a single timeout may wait. */
+  const armShareExpiry = (shareId: string, sessionId: string, delayMs: number): void => {
+    const timer = setTimeout(() => {
+      expiryTimers.delete(shareId)
+      const at = deps.ownerShares.get(shareId)?.expiresAt
+      const deadline = at === undefined ? undefined : Date.parse(at)
+      if (deadline !== undefined && Number.isFinite(deadline) && deadline > Date.now()) {
+        armShareExpiry(shareId, sessionId, deadline - Date.now())
+        return
+      }
+      // The deadline passed, so this share can no longer drive anything: its running turn is stopped and
+      // every stream a viewer opened through it is released, upstream subscriptions included. The record
+      // stays where it is, so the reader refuses later reads from the same deadline.
+      deps.cancelShareTurn(shareId)
+      deps.cancelChildTurns(shareId)
+      deps.viewerRead().closeShare(shareId)
+      // A Session whose shares have all passed their deadlines gets its own tools back.
+      deps.reconcileSourceAccess(sessionId)
+      deps.accessChanged()
+    }, Math.max(0, Math.min(delayMs, MAX_EXPIRY_TIMER_MS)))
+    // An armed deadline is not work the process owes anyone: it must never hold a host open by itself.
+    timer.unref()
+    expiryTimers.set(shareId, timer)
+  }
+
+  const clearShareExpiry = (shareId: string): void => {
+    const armed = expiryTimers.get(shareId)
+    if (armed === undefined) return
+    clearTimeout(armed)
+    expiryTimers.delete(shareId)
+  }
+
+  /**
+   * Delete one share's row from the Relay that carries it.
+   *
+   * Bounded: no owner decision waits on the Relay's answer, so a host that cannot reach it stops
+   * trying here and leaves the row for the next attempt.
+   */
+  const deleteRelayRow = async (relay: string, shareId: string, gatewayToken: string): Promise<boolean> => {
+    try {
+      const relayUrl = new URL(`${relay}/__liveshare/share`)
+      relayUrl.searchParams.set('shareId', shareId)
+      const response = await fetch(relayUrl, {
+        method: 'DELETE',
+        headers: { authorization: `Bearer ${gatewayToken}` },
+        signal: AbortSignal.timeout(5_000),
+      })
+      return response.ok || response.status === 404
+    } catch {
+      // An unreachable Relay is the ordinary offline case, and the owner's stop already took effect.
+      return false
+    }
+  }
+
+  /**
+   * Delete the Relay rows this host still owes.
+   *
+   * One row per share the owner stopped while the Relay could not be told, attempted again whenever
+   * the Relay may answer: at startup, on an owner request that reaches it, and on the retry timer
+   * that is armed while rows remain.
+   */
+  const flushPendingRemovals = async (): Promise<void> => {
+    if (deps.pendingRemovals.size === 0) return
+    let delivered = false
+    for (const entry of [...deps.pendingRemovals.values()]) {
+      if (await deleteRelayRow(entry.relay, entry.shareId, entry.gatewayToken)) {
+        deps.pendingRemovals.delete(entry.shareId)
+        delivered = true
+      }
+    }
+    if (delivered) {
+      pendingRemovalWait = PENDING_REMOVAL_RETRY_MS
+      try {
+        await deps.persistOwnerState()
+      } catch {
+        // The rows are gone from this host; the file still names them until its next write succeeds.
+      }
+    }
+    armPendingRemovalRetry()
+  }
+
+  /** Arm the next attempt for the rows still owed, or disarm when none are left. */
+  const armPendingRemovalRetry = (): void => {
+    if (pendingRemovalTimer !== undefined) clearTimeout(pendingRemovalTimer)
+    pendingRemovalTimer = undefined
+    if (deps.pendingRemovals.size === 0 || deps.disposed()) return
+    const wait = pendingRemovalWait
+    // Only this timer backs off; a trigger that reaches the Relay still flushes at once.
+    pendingRemovalWait = Math.min(pendingRemovalWait * 2, PENDING_REMOVAL_MAX_WAIT_MS)
+    const timer = setTimeout(() => {
+      pendingRemovalTimer = undefined
+      void flushPendingRemovals()
+    }, wait)
+    // A row the Relay has not been told about is not work this process owes: it never holds the host open.
+    timer.unref()
+    pendingRemovalTimer = timer
+  }
+
+  /**
+   * Refresh every share's recorded title from the Session's own title fold.
+   *
+   * A share records the title the owner held when it was created, and renaming the Session
+   * afterwards left that copy stale. Both services are read optionally: a profile without the
+   * session-title fold keeps the recorded title instead of failing to mount this bundle.
+   */
+  const reconcileShareTitles = async (): Promise<void> => {
+    const sessions = deps.ctx.get('sessions') as SessionLookup | undefined
+    const titles = deps.ctx.get('sessionTitle') as SessionTitleLookup | undefined
+    if (sessions === undefined || titles === undefined) return
+    for (const share of [...deps.ownerShares.values()]) {
+      const session = sessions.get(share.sessionId)
+      if (session === undefined) continue
+      const snapshot = titles.get(session)
+      const title = refreshedShareTitle(share.sessionTitle, snapshot?.title)
+      if (title === undefined) continue
+      const next: OwnerShare = { ...share, sessionTitle: title, revision: share.revision + 1 }
+      deps.ownerShares.set(next.shareId, next)
+      // The worker ignores an add for a share it already carries, so the renamed title only
+      // reaches the Relay after the old registration is dropped.
+      send({ type: 'remove-share', shareId: next.shareId })
+      send({ type: 'add-share', share: shareSpec(next, deps.storedCredential()) })
+      await deps.persistOwnerState()
+    }
+  }
+
+  /**
+   * The name a reader sees beside one share.
+   *
+   * The name comes from the verified credential's own display name. A credential that carries only a
+   * subject shows that subject's label rather than an invented name, and a registration without a
+   * credential falls back to the Relay's host name. Creating a share already requires a verified
+   * credential, so a name always resolves.
+   */
+  const readerFacingOwnerName = (
+    relay: string,
+    credential: StoredOwnerCredential | undefined,
+  ): string => {
+    const status = ownerIdentityStatus(relay, {}, credential)
+    const displayName = nonEmpty(status.displayName)
+    if (displayName !== undefined) return displayName
+    const subjectId = nonEmpty(status.subjectId)
+    return subjectId === undefined ? new URL(relay).host : identitySubjectLabel(subjectId)
+  }
+
+  /**
+   * The owner identity every registration of a share carries.
+   *
+   * A share reaches the Relay's ACL both when the owner creates it and when the worker is handed
+   * the shares this profile reconnected with, and a reader's admission is derived from these fields
+   * either way, so both sites build the row here instead of keeping two copies in step by hand.
+   */
+  const ownerIdentityRow = (relay: string, credential: StoredOwnerCredential | undefined) => ({
+    ...deps.ownerContext,
+    ownerDisplayName: readerFacingOwnerName(relay, credential),
+    /* v8 ignore next -- the version is read from the package manifest beside this module. */
+    ...(dshVersion === undefined ? {} : { dshVersion }),
+    ownerInstanceId: deps.instanceId,
+  })
+
+  const shareSpec = (share: ShareRegistrationSource, credential: StoredOwnerCredential | undefined): TunnelShareSpec => {
+    const ownerCredential = registrableCredentialForRelay(share.relay, credential)
+    return {
+      shareId: share.shareId,
+      sessionId: share.sessionId,
+      sessionTitle: share.sessionTitle,
+      // A share loaded from a state file written before the allowlist mode was renamed keeps that
+      // mode: the stored ACL still decides who may read the share, and the Relay accepts the name.
+      accessMode: share.accessMode,
+      relay: share.relay,
+      gatewayToken: share.gatewayToken,
+      // The Relay refuses a new share without this, and takes the owner identity from it.
+      ...(ownerCredential === undefined ? {} : { ownerCredential }),
+      ...ownerIdentityRow(share.relay, credential),
+      allowedSubjectIds: [...new Set([...deps.allowedSubjectIds, ...share.allowedSubjectIds])],
+      ...(share.expiresAt === undefined ? {} : { expiresAt: share.expiresAt }),
+      allowsFork: share.allowsFork,
+      sessionMode: share.sessionMode,
+    }
+  }
+
+  /**
+   * Register this host's shares for one Relay address again when they are not connected.
+   *
+   * A gateway refusal ends that registration for the lifetime of the worker process, so a share the
+   * Relay turned down while this host held no credential it would accept stays offline until
+   * something hands the worker a registration again. Every credential that becomes usable is
+   * therefore followed by one attempt per offline share of that address, which is what makes the
+   * owner's own verification a reconnect instead of a restart. A connected share is left alone: its
+   * registration is already the one the Relay admitted.
+   */
+  const reregisterOfflineShares = (relay: string, credential: StoredOwnerCredential): void => {
+    for (const share of [...deps.ownerShares.values()]) {
+      if (deps.disposed() || share.relay !== relay || share.online) continue
+      send({ type: 'add-share', share: shareSpec(share, credential) })
+    }
+  }
+
+  /**
+   * Per-Relay facts, keyed by normalized base URL.
+   *
+   * An owner can point this host at more than one address, and each address has its own support and
+   * claim outcome: mixing them would report one Relay's policy for another. A probe
+   * that answers late writes only the address it asked about, so switching addresses cannot inherit
+   * a stale answer.
+   */
+  const relayFacts = new Map<string, { supportsCredentials?: boolean; claim?: ClaimOutcome }>()
+  const factsFor = (relay: string): { supportsCredentials?: boolean; claim?: ClaimOutcome } => {
+    const normalized = normalizeRelayUrl(relay)
+    const existing = relayFacts.get(normalized)
+    if (existing !== undefined) return existing
+    const created: { supportsCredentials?: boolean; claim?: ClaimOutcome } = {}
+    relayFacts.set(normalized, created)
+    return created
+  }
+
+  /**
+   * Credential currently usable for one Relay address.
+   *
+   * A credential is bound to the address it was minted for, so a host that switches Relay keeps the
+   * old file but never sends it to the new address.
+   */
+  const credentialForRelay = (
+    relay: string,
+    credential: StoredOwnerCredential | undefined,
+  ): string | undefined => {
+    const normalized = normalizeRelayUrl(relay)
+    return ownerCredentialState(credential, normalized, Date.now()) === 'verified'
+      ? credential?.credential
+      : undefined
+  }
+
+  /**
+   * Credential stored for one Relay address, whether or not this host still judges it unexpired.
+   *
+   * A claim presents this instead of {@link credentialForRelay}: the Relay decides a credential
+   * against the login it keeps renewing, so a token past its signed expiry may still be accepted
+   * there, and the answer is what tells this host the horizon that actually applies. A Relay that has
+   * genuinely stopped accepting it answers a refusal, which changes nothing here.
+   */
+  const claimableCredentialForRelay = (relay: string): string | undefined => {
+    const normalized = normalizeRelayUrl(relay)
+    return deps.storedCredential()?.relay === normalized ? deps.storedCredential()?.credential : undefined
+  }
+
+  /**
+   * Credential a registration for one share this host already holds presents.
+   *
+   * The Relay renews the login behind a credential, so its signed expiry is a floor and only the
+   * Relay can say whether it still authorizes; this host's own read through
+   * {@link ownerCredentialState} states what it can see, not what the Relay still accepts. A share in
+   * this host's own state therefore registers with the credential stored for that address whatever
+   * that read says. Withholding it made a Relay that no longer holds the row judge the restore an
+   * anonymous first publish and refuse it, which left a link the owner never stopped sharing offline
+   * until a restart. Creating a share keeps {@link credentialForRelay}, so an expired login still
+   * blocks exactly the new shares it is the owner's to authorize.
+   */
+  const registrableCredentialForRelay = (
+    relay: string,
+    credential: StoredOwnerCredential | undefined,
+  ): string | undefined => {
+    const normalized = normalizeRelayUrl(relay)
+    return credential?.relay === normalized ? credential.credential : undefined
+  }
+
+  /**
+   * Adopt the horizon one Relay reported for the credential a claim presented.
+   *
+   * The Relay renews the login behind a credential, so the expiry signed into the token is a floor:
+   * adopting the reported horizon is what keeps the status page and the publish path from calling a
+   * credential expired that the Relay still accepts. A reported horizon earlier than the stored one is
+   * adopted too, because a Relay that stopped renewing the login is the authority on that as well.
+   */
+  const adoptReportedCredentialHorizon = (relay: string, presented: string, reported: unknown): void => {
+    const expiresAt = reportedOwnerCredentialExpiry(reported)
+    const current = deps.storedCredential()
+    // The answer belongs to the token this pass presented; a credential replaced while the request was
+    // in flight keeps the horizon its own issuing Relay gave it.
+    if (expiresAt === undefined || current === undefined
+      || current.relay !== normalizeRelayUrl(relay) || current.credential !== presented) return
+    if (current.expiresAt === expiresAt) return
+    const committed: StoredOwnerCredential = { ...current, expiresAt }
+    try {
+      saveOwnerCredential(deps.ownerCredentialFile, committed)
+    } catch {
+      // A record this host cannot rewrite keeps the horizon it already had.
+      return
+    }
+    deps.setStoredCredential(committed)
+  }
+
+  /**
+   * Ask the Relay whether it binds owner identity, and what horizon it grants the credential held.
+   *
+   * A Relay that answers without `supported: true` is older than this owner build, and the host
+   * refuses creation there rather than publishing a share anonymously. A Relay this host cannot
+   * reach leaves the answer unknown: that is an availability problem, not a policy one.
+   *
+   * The probe presents the stored credential for that address when there is one, so this is also the
+   * path that refreshes the local horizon for an owner whose shares are all gone and which therefore
+   * never reaches a claim. A Relay that does not answer with a horizon leaves the stored value alone.
+   */
+  const probeRelayCredentialSupport = async (relay: string): Promise<void> => {
+    const normalized = normalizeRelayUrl(relay)
+    const facts = factsFor(normalized)
+    const presented = claimableCredentialForRelay(normalized)
+    try {
+      const response = await fetch(new URL(`${normalized}/__liveshare/owner-credential`), {
+        signal: AbortSignal.timeout(5_000),
+        ...(presented === undefined ? {} : { headers: { 'x-liveshare-owner-credential': presented } }),
+      })
+      if (deps.disposed()) return
+      if (!response.ok) {
+        facts.supportsCredentials = false
+        return
+      }
+      const body = await response.json() as { readonly supported?: unknown; readonly ownerCredentialExpiresAt?: unknown }
+      if (deps.disposed()) return
+      facts.supportsCredentials = body.supported === true
+      if (presented !== undefined) adoptReportedCredentialHorizon(normalized, presented, body.ownerCredentialExpiresAt)
+    } catch {
+      // Unreachable stays unknown; the creation path still refuses without a credential.
+      return
+    }
+  }
+
+  /**
+   * Bind this host's existing shares to its verified identity.
+   *
+   * A claim carries both the share's own management token and the owner credential, so the Relay
+   * binds an identity only for a caller that already holds the share. The pass is idempotent, and a
+   * Relay this host cannot reach simply leaves its shares unclaimed for the next attempt.
+   * The pass uses one captured credential and address throughout; later owner changes cannot redirect it.
+   */
+  const claimOwnedShares = async (
+    relay: string,
+    credential: string | undefined,
+  ): Promise<ClaimOutcome> => {
+    let claimed = 0
+    let skipped = 0
+    if (credential === undefined || deps.disposed()) return { claimed, skipped }
+    for (const share of [...deps.ownerShares.values()]) {
+      if (deps.disposed()) break
+      if (normalizeRelayUrl(share.relay) !== relay) continue
+      try {
+        const response = await fetch(
+          new URL(`${share.relay}/__liveshare/share/claim?shareId=${encodeURIComponent(share.shareId)}`),
+          {
+            method: 'POST',
+            headers: {
+              authorization: `Bearer ${share.gatewayToken}`,
+              'x-liveshare-owner-credential': credential,
+            },
+          },
+        )
+        if (!response.ok) continue
+        const body = await response.json() as { readonly claimed?: unknown; readonly ownerCredentialExpiresAt?: unknown }
+        adoptReportedCredentialHorizon(relay, credential, body.ownerCredentialExpiresAt)
+        if (body.claimed === true) claimed += 1
+        else skipped += 1
+      } catch {
+        // An unreachable Relay leaves the share as it was; the next pass retries it.
+        continue
+      }
+    }
+    return { claimed, skipped }
+  }
+
+  /** Owner identity state for one Relay address, without exposing the credential itself. */
+  const ownerIdentityStatus = (
+    relay: string,
+    extra: { readonly renewed?: boolean; readonly claim?: ClaimOutcome },
+    credential: StoredOwnerCredential | undefined,
+  ): OwnerIdentityStatus => {
+    const normalized = normalizeRelayUrl(relay)
+    const facts = factsFor(normalized)
+    // A Relay that cannot bind identity makes local credential state irrelevant: reporting anything
+    // else would offer a verification path that cannot succeed at that address.
+    const state = facts.supportsCredentials === false
+      ? 'relay-unsupported'
+      : ownerCredentialState(credential, normalized, Date.now())
+    const bound = credential?.relay === normalized ? credential : undefined
+    const claim = extra.claim ?? facts.claim
+    return {
+      state,
+      relay: normalized,
+      ...(bound?.displayName === undefined ? {} : { displayName: bound.displayName }),
+      ...(bound?.subjectId === undefined ? {} : { subjectId: bound.subjectId }),
+      ...(bound?.avatarUrl === undefined ? {} : { avatarUrl: bound.avatarUrl }),
+      ...(bound?.expiresAt === undefined ? {} : { expiresAt: bound.expiresAt }),
+      ...(extra.renewed === undefined ? {} : { renewed: extra.renewed }),
+      ...(claim === undefined ? {} : { claim }),
+    }
+  }
+
+  async function httpReachable(relay: string): Promise<{ reachable: true } | { reachable: false; reason: string }> {
+    const controller = new AbortController()
+    const timer = setTimeout(() => { controller.abort() }, 5_000)
+    try {
+      const response = await fetch(relay, { method: 'GET', redirect: 'manual', signal: controller.signal })
+      await response.body?.cancel()
+      return { reachable: true }
+    } catch (error) {
+      return { reachable: false, reason: describeTransportFailure(error) }
+    } finally {
+      clearTimeout(timer)
+    }
+  }
+
+  /**
+   * What one Relay connectivity check reports back to the owner dialog.
+   *
+   * `blocking` is the Host's own severity decision. An address that does not answer blocks the flow
+   * before authorization, because the next step cannot run against it; nothing about credentials is
+   * read here.
+   */
+  const probeRelayConnectivity = async (relay: string): Promise<RelayConnectivityView> => {
+    const reachable = await httpReachable(relay)
+    return reachable.reachable
+      ? { ok: true, httpReachable: true, blocking: false }
+      : { ok: false, httpReachable: false, blocking: true, error: `${relay}: ${reachable.reason}` }
+  }
+
+  /**
+   * Register one throwaway share with the Relay and report what it answered.
+   *
+   * The probe carries the same credential, identity row, and management token a real share would, so
+   * the Relay decides it the same way. The share is removed as soon as it settles either way.
+   */
+  const probeRegistration = async (
+    share: Omit<TunnelShareSpec, 'shareId'>,
+  ): Promise<{ ok: boolean; error?: string }> => {
+    const shareId = `test-${base64Url(randomBytes(6))}`
+    const result = waitForShare(shareId, 12_000)
+    send({ type: 'add-share', share: { ...share, shareId } })
+    const settled = await result
+    send({ type: 'remove-share', shareId })
+    return settled
+  }
+
+  /**
+   * What one publish-permission check reports back to the owner dialog.
+   *
+   * `blocking` is the Host's own severity decision, because only the Host sees what the Relay answered:
+   * a refusal is the Relay's decision about this credential and reaches the same answer on every
+   * attempt, so it blocks until the owner verifies again; a transient failure keeps the ordinary retry.
+   * The dialog picks its visual state from this flag and prints `error` unchanged.
+   */
+  const probeRelayPublish = async (
+    relay: string,
+    share: Omit<TunnelShareSpec, 'shareId'>,
+  ): Promise<RelayPublishView> => {
+    const settled = await probeRegistration(share)
+    if (settled.ok) return { ok: true, blocking: false }
+    const refusal = settled.error === undefined ? undefined : relayRefusalStatus(settled.error)
+    if (refusal === undefined) {
+      // The Relay did not decide this registration: the gateway keeps its reconnect schedule, so the
+      // share stays creatable and the diagnosis only reports what happened.
+      return {
+        ok: false,
+        blocking: false,
+        ...(settled.error === undefined ? {} : { error: `${relay}: ${settled.error}` }),
+      }
+    }
+    // A refusal is a decision about the credential this host presented, and the owner acts on it by
+    // verifying again at this address rather than by waiting.
+    return {
+      ok: false,
+      blocking: true,
+      error: refusal === 401 || refusal === 403
+        ? `${relay}: this address did not accept this host's owner credential (relay refused registration status=${String(refusal)})`
+        : `${relay}: the Relay refused this registration (relay refused registration status=${String(refusal)})`,
+    }
+  }
+
+  const dispose = async (closeViewer: () => void): Promise<void> => {
+    for (const controller of forwardedRequests.values()) controller.abort(new Error('Host disposed'))
+    if (pendingRemovalTimer !== undefined) clearTimeout(pendingRemovalTimer)
+    closeViewer()
+    for (const armed of expiryTimers.values()) clearTimeout(armed)
+    expiryTimers.clear()
+    for (const entry of pending.values()) {
+      clearTimeout(entry.timer)
+      entry.resolve({ ok: false, error: 'host disposed' })
+    }
+    pending.clear()
+    await worker?.stop()
+    await Promise.all(forwardedTasks)
+    forwardedRequests.clear()
+    worker = undefined
+  }
+
+  return {
+    send,
+    waitForShare,
+    shareSpec,
+    scheduleShareExpiry,
+    clearShareExpiry,
+    flushPendingRemovals,
+    armPendingRemovalRetry,
+    deleteRelayRow,
+    reconcileShareTitles,
+    factsFor,
+    probeRelayCredentialSupport,
+    claimOwnedShares,
+    credentialForRelay,
+    claimableCredentialForRelay,
+    reregisterOfflineShares,
+    probeRelayConnectivity,
+    probeRelayPublish,
+    ownerIdentityStatus,
+    dispose,
+  }
+}
diff --git a/packages/experimental/liveshare/src/host/tunnel-worker.ts b/packages/experimental/liveshare/src/host/tunnel-worker.ts
new file mode 100644
index 0000000000..7250d405d7
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/tunnel-worker.ts
@@ -0,0 +1,378 @@
+/** Owner of the single tunnel worker process used by one DSH web process. */
+
+import { randomUUID } from 'node:crypto'
+import { spawn, type ChildProcess } from 'node:child_process'
+import { createWriteStream, mkdtempSync, type WriteStream } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import {
+  parseTunnelWorkerEvent,
+  type TunnelRequestToken,
+  type TunnelRegistrationToken,
+  type TunnelShareSpec,
+  type TunnelWorkerCommand,
+  type TunnelWorkerEvent,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import {
+  INITIAL_RETRY_BACKOFF,
+  RETRY_STABLE_MS,
+  retryBackoffNext,
+  retryBackoffSettled,
+  type RetryBackoff,
+} from '../owner-gateway/retry-backoff.ts'
+
+/** A Node executable plus argv used to start the worker in source or built mode. */
+export interface TunnelProcessCommand {
+  readonly executable: string
+  readonly args: readonly string[]
+}
+
+/** Owner commands acquire their registration identity in the supervisor, not in Host consumers. */
+export type TunnelWorkerInput = TunnelWorkerCommand extends infer Command
+  ? Command extends TunnelWorkerCommand ? Omit<Command, 'registrationToken'> : never
+  : never
+
+/** Runtime options for one owner-side worker. */
+export interface TunnelWorkerOptions {
+  readonly command: TunnelProcessCommand
+}
+
+/**
+ * Own one long-lived tunnel process and multiplex all shares over IPC.
+ * The worker is started lazily; commands issued before `ready` are queued.
+ *
+ * The process is supervised, not just launched: a worker that exits is replaced on the shared
+ * reconnect schedule and every share the owner registered is handed to the replacement, so a crash
+ * cannot leave a share offline that the owner never stopped sharing.
+ */
+export class TunnelWorker {
+  private readonly listeners = new Set<(event: TunnelWorkerEvent) => void>()
+  private readonly queue: TunnelWorkerCommand[] = []
+  private readonly requests = new Map<TunnelRequestToken, Extract<TunnelWorkerEvent, { type: 'share-rpc-request' }>>()
+  /**
+   * Shares the current process is expected to carry: registered by the owner, then confirmed or
+   * dropped by the worker's own events. A share that leaves this set is not necessarily forgotten —
+   * `registrations` below is what the owner still holds.
+   */
+  private readonly shares = new Set<string>()
+  /** Current add identity and latest committed Relay intent, retained across process replacements. */
+  private readonly registrations = new Map<string, {
+    spec: TunnelShareSpec
+    registrationToken: TunnelRegistrationToken
+    version: number | undefined
+    connected: boolean
+  }>()
+  private child: ChildProcess | undefined
+  private out: WriteStream | undefined
+  private ready = false
+  private stopping = false
+  private aliveSince: number | undefined
+  private backoff: RetryBackoff = INITIAL_RETRY_BACKOFF
+  private restartTimer: ReturnType<typeof setTimeout> | undefined
+
+  constructor(private readonly options: TunnelWorkerOptions) {}
+
+  /** Start the worker and its private log file. */
+  start(): void {
+    if (this.stopping || this.child !== undefined) return
+    if (this.restartTimer !== undefined) {
+      clearTimeout(this.restartTimer)
+      this.restartTimer = undefined
+    }
+    const logDir = mkdtempSync(join(tmpdir(), 'liveshare-worker-'))
+    this.out = createWriteStream(join(logDir, 'tunnel.log'), { flags: 'a', mode: 0o600 })
+    const child = spawn(this.options.command.executable, [...this.options.command.args], {
+      env: {
+        NODE_ENV: process.env.NODE_ENV,
+        LIVESHARE_TUNNEL_MODE: 'gateway',
+        ...workerTransportEnv(process.env),
+      },
+      stdio: ['ignore', 'pipe', 'pipe', 'ipc'],
+    })
+    this.child = child
+    child.stdout?.pipe(this.out)
+    child.stderr?.pipe(this.out)
+    child.on('message', (value) => {
+      if (this.child === child) this.onMessage(child, value)
+    })
+    child.on('spawn', () => {
+      if (this.child === child) this.aliveSince = Date.now()
+    })
+    child.on('error', (error) => {
+      if (this.child === child) this.onExit(error.message)
+    })
+    child.on('exit', (code, signal) => {
+      if (this.child === child) this.onExit(`tunnel worker exited code=${String(code)} signal=${String(signal)}`)
+    })
+  }
+
+  /**
+   * Subscribe to worker lifecycle events.
+   * @param listener Receives worker readiness, share, and failure events.
+   * @returns Disposer that removes the listener.
+   */
+  onEvent(listener: (event: TunnelWorkerEvent) => void): () => void {
+    this.listeners.add(listener)
+    return () => { this.listeners.delete(listener) }
+  }
+
+  /**
+   * Queue one command for the worker, starting it when necessary.
+   *
+   * The command is held until a worker can take it. While no process is running — before the first
+   * start, or between a crash and its scheduled replacement — the restart replays the registration
+   * set instead, which already carries this command's effect.
+   * @param command Owner command to deliver after the worker is ready.
+   * @returns Nothing.
+   */
+  send(command: TunnelWorkerInput): void {
+    if (this.stopping) return
+    if (command.type === 'share-rpc-response') {
+      const request = this.requests.get(command.token)
+      if (request === undefined || request.id !== command.id || request.shareId !== command.shareId
+        || this.registrations.get(request.shareId)?.registrationToken !== request.registrationToken) return
+      this.requests.delete(command.token)
+      if (this.ready && this.child?.connected === true) {
+        this.child.send({ ...command, registrationToken: request.registrationToken } satisfies TunnelWorkerCommand)
+      }
+      return
+    }
+    let ipc: TunnelWorkerCommand
+    if (command.type === 'add-share') {
+      this.cancelRequests(command.share.shareId)
+      const registrationToken = randomUUID() as TunnelRegistrationToken
+      ipc = { ...command, registrationToken }
+      this.shares.add(command.share.shareId)
+      this.registrations.set(command.share.shareId, { spec: command.share, registrationToken, version: undefined, connected: false })
+    } else {
+      ipc = command
+    }
+    if (command.type === 'remove-share') {
+      this.cancelRequests(command.shareId)
+      this.shares.delete(command.shareId)
+      this.registrations.delete(command.shareId)
+    }
+    if (this.child === undefined || this.child.exitCode !== null || this.child.signalCode !== null) {
+      this.queue.push(ipc)
+      // A scheduled replacement flushes the queue when it arrives. With none pending — before the
+      // first start, or after a crash left nothing to register — a worker starts now.
+      if (this.restartTimer === undefined) this.start()
+      return
+    }
+    if (this.ready && this.child.connected) {
+      this.child.send(ipc)
+    } else {
+      this.queue.push(ipc)
+    }
+  }
+
+  /** Stop accepting shares, cancel a pending restart, send shutdown, then kill a hung worker. */
+  async stop(): Promise<void> {
+    this.stopping = true
+    this.cancelRequests()
+    this.registrations.clear()
+    this.queue.length = 0
+    if (this.restartTimer !== undefined) {
+      clearTimeout(this.restartTimer)
+      this.restartTimer = undefined
+    }
+    const child = this.child
+    if (child === undefined) {
+      this.out?.close()
+      this.out = undefined
+      return
+    }
+    const closed = new Promise<void>((resolve) => { child.once('exit', () => { resolve() }) })
+    if (child.connected) child.send({ type: 'shutdown' } satisfies TunnelWorkerCommand)
+    const terminate = setTimeout(() => { child.kill('SIGTERM') }, 1_000)
+    const kill = setTimeout(() => { child.kill('SIGKILL') }, 2_000)
+    try {
+      await closed
+    } finally {
+      clearTimeout(terminate)
+      clearTimeout(kill)
+    }
+    this.child = undefined
+    this.ready = false
+    this.aliveSince = undefined
+    this.shares.clear()
+    this.queue.length = 0
+    this.out?.close()
+    this.out = undefined
+  }
+
+  private onMessage(child: ChildProcess, value: unknown): void {
+    if (this.stopping || this.child !== child) return
+    const event = parseTunnelWorkerEvent(value)
+    if (event === undefined) {
+      // An event this host does not read is otherwise indistinguishable from no event at all, which
+      // is what makes a worker built from another release hard to diagnose from the owner side.
+      const named = typeof value === 'object' && value !== null
+        ? (value as { readonly type?: unknown }).type
+        : undefined
+      console.warn(`[liveshare] host dropped one worker event type=${typeof named === 'string' ? named : 'unnamed'}`)
+      return
+    }
+    if (event.type !== 'ready'
+      && this.registrations.get(event.shareId)?.registrationToken !== event.registrationToken) return
+    if (event.type === 'share-access-state') {
+      const registration = this.registrations.get(event.shareId)
+      if (registration === undefined || !registration.connected
+        || (registration.version !== undefined && registration.version >= event.version)) return
+      const { expiresAt: _expiresAt, ...retained } = registration.spec
+      registration.spec = {
+        ...retained,
+        accessMode: event.accessMode,
+        allowedSubjectIds: event.allowedSubjectIds,
+        sessionMode: event.sessionMode,
+        // A Relay that states no switch states it off; the tier does not imply a fork grant.
+        allowsFork: event.allowsFork === true,
+        ...(event.expiresAt === undefined ? {} : { expiresAt: event.expiresAt }),
+      }
+      registration.version = event.version
+    } else if (event.type === 'share-rpc-request') {
+      this.requests.set(event.token, event)
+    } else if (event.type === 'share-rpc-cancel') {
+      const request = this.requests.get(event.token)
+      if (request === undefined || request.shareId !== event.shareId || request.id !== event.id
+        || request.registrationToken !== event.registrationToken) return
+      this.requests.delete(event.token)
+    }
+    if (event.type === 'share-connected') {
+      this.shares.add(event.shareId)
+      const registration = this.registrationOf(event.shareId)
+      registration.connected = true
+      registration.version = undefined
+    } else if (event.type === 'share-error' || event.type === 'share-closed') {
+      const registration = this.registrationOf(event.shareId)
+      registration.connected = false
+      registration.version = undefined
+      // Socket loss invalidates authority but not the retained intent used by a replacement.
+      if (event.type === 'share-error') this.shares.delete(event.shareId)
+    }
+    this.emit(event)
+  }
+
+  private onExit(message: string): void {
+    /* v8 ignore next -- an exit report is delivered only for the current child, and the first report clears it. */
+    if (this.child === undefined) return
+    this.child = undefined
+    this.ready = false
+    if (this.aliveSince !== undefined && Date.now() - this.aliveSince >= RETRY_STABLE_MS) {
+      this.backoff = retryBackoffSettled()
+    }
+    this.aliveSince = undefined
+    for (const registration of this.registrations.values()) {
+      registration.connected = false
+      registration.version = undefined
+    }
+    this.cancelRequests()
+    if (this.stopping) return
+    this.queue.length = 0
+    for (const [shareId, registration] of this.registrations) {
+      this.emit({ type: 'share-error', registrationToken: registration.registrationToken, shareId, message })
+    }
+    // A worker carrying no share has nothing to repair, so it stays down until a command arrives.
+    if (this.registrations.size > 0) this.scheduleRestart()
+  }
+
+  /** Replace the exited process after the scheduled delay, re-registering the owner's shares. */
+  private scheduleRestart(): void {
+    /* v8 ignore next -- only the current child's exit calls this, and stop() cancels a pending replacement. */
+    if (this.stopping || this.child !== undefined || this.restartTimer !== undefined) return
+    const delayMs = this.backoff.delayMs
+    this.backoff = retryBackoffNext(this.backoff)
+    console.warn(
+      `[liveshare] restarting tunnel worker delayMs=${String(delayMs)}`
+      + ` attempt=${String(this.backoff.attempt)} shares=${String(this.registrations.size)}`,
+    )
+    this.restartTimer = setTimeout(() => {
+      this.restartTimer = undefined
+      /* v8 ignore next -- stop() clears this timer and start() clears it before spawning a replacement. */
+      if (this.stopping || this.child !== undefined) return
+      this.replayRegistrations()
+      this.start()
+    }, delayMs)
+  }
+
+  /**
+   * Hand every registered share to the process about to start.
+   *
+   * The registration set is the owner's current intent, so it replaces any `add-share` still queued
+   * from before the crash: that command's spec may already be superseded, and a share the owner
+   * removed in the meantime is no longer in the set at all.
+   */
+  /** The registration the token guard above already matched for one non-ready event. */
+  private registrationOf(shareId: string): {
+    spec: TunnelShareSpec
+    registrationToken: TunnelRegistrationToken
+    version: number | undefined
+    connected: boolean
+  } {
+    const registration = this.registrations.get(shareId)
+    /* v8 ignore next -- the IPC token guard returned unless this share is registered. */
+    if (registration === undefined) throw new Error('liveshare: worker event for an unregistered share')
+    return registration
+  }
+
+  private replayRegistrations(): void {
+    for (let index = this.queue.length - 1; index >= 0; index -= 1) {
+      if (this.queue[index]?.type === 'add-share') this.queue.splice(index, 1)
+    }
+    for (const registration of this.registrations.values()) {
+      this.queue.push({ type: 'add-share', registrationToken: registration.registrationToken, share: registration.spec })
+    }
+  }
+
+  private cancelRequests(shareId?: string): void {
+    const requests = [...this.requests.values()].filter(request => shareId === undefined || request.shareId === shareId)
+    for (const request of requests) this.requests.delete(request.token)
+    for (const request of requests) {
+      this.emit({ type: 'share-rpc-cancel', registrationToken: request.registrationToken, token: request.token, id: request.id, shareId: request.shareId })
+    }
+  }
+
+  private emit(event: TunnelWorkerEvent): void {
+    if (event.type === 'ready') {
+      this.ready = true
+      for (const command of this.queue.splice(0)) {
+        if (this.child?.connected === true) this.child.send(command)
+      }
+    }
+    for (const listener of this.listeners) listener(event)
+  }
+}
+
+/**
+ * Transport settings the worker's own TLS and proxy handling reads from the environment.
+ *
+ * The worker is a separate process, so a deployment that reaches its Relay through a private CA or
+ * an explicit proxy has to pass those settings on: without them the worker rejects a Relay the Host
+ * itself already reaches, and the failure looks like an unreachable address.
+ */
+const WORKER_TRANSPORT_ENV = [
+  'NODE_EXTRA_CA_CERTS',
+  'NODE_OPTIONS',
+  'SSL_CERT_FILE',
+  'SSL_CERT_DIR',
+  'HTTP_PROXY',
+  'HTTPS_PROXY',
+  'NO_PROXY',
+  'http_proxy',
+  'https_proxy',
+  'no_proxy',
+] as const
+
+/**
+ * Select the worker's inherited transport settings.
+ * @param source - Environment of the Host process that starts the worker.
+ * @returns Entries the worker needs to resolve and trust the Relay address.
+ */
+function workerTransportEnv(source: NodeJS.ProcessEnv): NodeJS.ProcessEnv {
+  const forwarded: NodeJS.ProcessEnv = {}
+  for (const name of WORKER_TRANSPORT_ENV) {
+    const value = source[name]
+    if (value !== undefined && value !== '') forwarded[name] = value
+  }
+  return forwarded
+}
diff --git a/packages/experimental/liveshare/src/host/viewer-access-policy.ts b/packages/experimental/liveshare/src/host/viewer-access-policy.ts
new file mode 100644
index 0000000000..8718e7db2b
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/viewer-access-policy.ts
@@ -0,0 +1,562 @@
+/**
+ * Remote access policy deciding what one share reader may call on this owner Host.
+ *
+ * The Gateway decides every call that speaks for a `share-viewer` Peer, and every Session notification it
+ * forwards to one, from the bindings this policy lists; the Session and Workspace controllers filter list
+ * results through the same bindings, and every reader page opens with the snapshot computed from them. A
+ * served reader holds the global read role, read roles on the shared Session and on the forks it created
+ * through the same share, and the Workspace role on each Workspace holding one of those Sessions; it holds
+ * nothing while the share does not serve it. Attachment upload rides the read role, so every Session the
+ * reader can see is a Session it may attach files to. Conditions on the fork and write roles, and the
+ * policy's `explain`, give the refusal codes the reader page already classifies.
+ *
+ * Every rule reads in-memory share state synchronously. Work that needs an await (Relay refresh,
+ * activating a cold Session, fork identity and replay) stays in the viewer reader before dispatch, which
+ * reads the same write rules through {@link readerWriteRefusal}.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/viewer-access-policy
+ */
+
+import { SessionId } from '@deepseek-ai/dsh-session'
+import type {
+  RemoteAccessAction,
+  RemoteAccessBinding,
+  RemoteAccessCondition,
+  RemoteAccessDecision,
+  RemoteAccessEndpoint,
+  RemoteAccessPolicy,
+  RemoteAccessRequest,
+  RemoteAccessResourceKind,
+  RemoteAccessRole,
+} from '@deepseek-ai/dsh-api-remote-access/types'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { Workspace } from '@deepseek-ai/dsh-workspace/types'
+import {
+  VIEWER_ENDPOINT_CLASSES,
+  VIEWER_FORWARDED_EVENTS,
+  assertSameViewerActions,
+  readerPolicyEndpoints,
+} from '../endpoint-classification.ts'
+import { VIEWER_READ_ONLY_CODE } from '../viewer-channel.ts'
+import type { ForkRecord, ForkRegistry } from './fork-registry.ts'
+import { isExpired, type ForkShareState, type ViewerSessionMode } from './fork-policy.ts'
+import type { ViewerCapabilityGroup } from './viewer-declarations.ts'
+import type { ShareViewerPrincipal } from './viewer-principal.ts'
+
+/** The two write actions a reader may take on a Session. */
+export type ReaderWriteAction = 'session/prompt' | 'session/cancel'
+
+/** Share state this policy reads, all synchronous and held in memory by the share host. */
+export interface ViewerAccessFacts {
+  /**
+   * Share state as the owner host holds it.
+   * @param shareId - Share the reader's calls arrive through.
+   * @returns The state, with `sessionMode` already narrowed to what may still be driven; undefined when
+   *   this host publishes no such share.
+   */
+  readonly share: (shareId: string) => ForkShareState | undefined
+  /**
+   * Whether the Relay authority this host holds still admits one reader.
+   * @param shareId - Share the reader belongs to.
+   * @param actor - Reader identity.
+   * @returns True while admitted.
+   */
+  readonly viewerAdmitted: (shareId: string, actor: ShareRpcActor) => boolean
+  /**
+   * Whether the share's source Session carries a usable confined access layer.
+   * @param shareId - Share whose source Session is asked about.
+   * @returns True only while the layer is installed and confined.
+   */
+  readonly sourceConfined: (shareId: string) => boolean
+  /** Forks this host created, and the per-child prompt decision. */
+  readonly forks: Pick<ForkRegistry, 'find' | 'listForShare' | 'allowsPrompt'>
+  /**
+   * Workspaces this host holds, when the composition mounts the Workspace registry.
+   * @returns Workspaces in registry order.
+   */
+  readonly workspaces: () => readonly Pick<Workspace, 'id' | 'sessionIds'>[]
+  /**
+   * The endpoints plugins currently offer for share viewers, grouped by declaring plugin.
+   *
+   * Read on every binding computation and never captured, so a declaration and its disposal decide the
+   * reader's next call. This is an offer, not a grant: the share's own selection decides what it exposes.
+   * @returns The declared endpoints, empty when no plugin declares any.
+   */
+  readonly declaredCapabilities: () => readonly ViewerCapabilityGroup[]
+}
+
+/** What a condition on a Session binding receives. */
+type SessionConditionRequest = Parameters<RemoteAccessCondition<'session'>>[0]
+
+/** Why a share no longer serves one reader; the codes the reader page already classifies. */
+type ViewerShareRefusal = 'share-not-found' | 'share-stopped' | 'share-expired' | 'viewer-not-authorized'
+
+/** Global reads every served reader may call. */
+const VIEWER_GLOBAL_ROLE: RemoteAccessRole<'global'> = {
+  name: 'liveshare:viewer-global',
+  resource: 'global',
+  actions: [
+    'commands/list',
+    'llm/listConfigurableProviders',
+    'llm/listProviders',
+    'session/canOpenWorkspacePath',
+    'session/control',
+    'session/list',
+    'session/modelCatalog',
+    'workspace/follow',
+  ],
+}
+
+/**
+ * Reads of one Session the reader can see, the Session notifications forwarded about it, and attachment
+ * upload.
+ *
+ * The role binds every Session this share serves the reader — the shared source and each of its own
+ * forks — so attachment upload follows visibility alone: neither the tier nor the fork switch decides it.
+ */
+const VIEWER_SESSION_READ_ROLE: RemoteAccessRole<'session'> = {
+  name: 'liveshare:viewer-session-read',
+  resource: 'session',
+  actions: [
+    'commands/list',
+    'fileUploads/upload',
+    'goals/get',
+    'session/attachment',
+    'session/control',
+    'session/events',
+    'session/follow',
+    'session/list',
+    'session/observeEvent',
+    'session/observeProjections',
+    'session/observeState',
+    'session/page',
+    'session/projections',
+    'session/state',
+    'session/wait',
+    'skills/list',
+    'toolResults/watch',
+    'workspace/follow',
+    'event:api-session/activity',
+    'event:api-session/added',
+    'event:api-session/error',
+    'event:api-session/removed',
+    'event:api-session/status',
+  ],
+}
+
+/**
+ * Forking the shared Session and every fork the reader can see.
+ *
+ * One role carries the whole fork decision: the owner's `allowsFork` switch decides it, and the source
+ * Session and each visible child get the same binding, so a child a reader may see is a child it may
+ * fork again on the same terms.
+ */
+const VIEWER_FORK_ROLE: RemoteAccessRole<'session'> = {
+  name: 'liveshare:viewer-fork',
+  resource: 'session',
+  actions: ['session/fork'],
+}
+
+/** Prompting and stopping the shared Session. */
+const VIEWER_SOURCE_WRITE_ROLE: RemoteAccessRole<'session'> = {
+  name: 'liveshare:viewer-source-write',
+  resource: 'session',
+  actions: ['session/prompt', 'session/cancel'],
+}
+
+/**
+ * Prompting, stopping, and renaming one of the reader's own visible forks.
+ *
+ * This role binds only a forked child, never the source Session: only a child can be renamed, so the
+ * shared Session keeps `session/fork` as its one Session verb and a reader cannot rename the owner's
+ * Session through the policy. The role carries no share switch of its own; a revoked fork stays readable
+ * through the read role and carries no action of this one.
+ */
+const VIEWER_CHILD_ROLE: RemoteAccessRole<'session'> = {
+  name: 'liveshare:viewer-child',
+  resource: 'session',
+  actions: ['session/prompt', 'session/cancel', 'session/rename'],
+}
+
+/** Following one Workspace that holds a Session the reader can see. */
+const VIEWER_WORKSPACE_ROLE: RemoteAccessRole<'workspace'> = {
+  name: 'liveshare:viewer-workspace',
+  resource: 'workspace',
+  actions: ['workspace/follow'],
+}
+
+/** Every role this policy binds; the derived action set must name exactly their union. */
+const VIEWER_ROLES = [
+  VIEWER_GLOBAL_ROLE,
+  VIEWER_SESSION_READ_ROLE,
+  VIEWER_FORK_ROLE,
+  VIEWER_SOURCE_WRITE_ROLE,
+  VIEWER_CHILD_ROLE,
+  VIEWER_WORKSPACE_ROLE,
+] as const
+
+/**
+ * Every action this policy's own roles decide, derived from the endpoint classification table.
+ *
+ * A plugin capability adds only endpoints the share policy does not decide itself: the read, fork, and
+ * write roles keep their conditions and their modes for the actions they list, so offering and selecting
+ * `session/prompt`, `session/cancel`, `session/fork`, or `fileUploads/upload` cannot replace the decision
+ * the policy's own roles make. This is not a whitelist: an endpoint no role lists stays refused until a
+ * plugin offers it and the owner selects it.
+ *
+ * The table is the single source: `reader-*` entries plus the forwarded events reproduce exactly the
+ * actions the roles list. The load-time assertion below fails loudly if either side drifts, so a
+ * classification edit can never silently change what a reader may call.
+ */
+export const POLICY_DECIDED_ACTIONS: ReadonlySet<RemoteAccessAction> = new Set<RemoteAccessAction>([
+  ...readerPolicyEndpoints(VIEWER_ENDPOINT_CLASSES),
+  ...VIEWER_FORWARDED_EVENTS,
+])
+assertSameViewerActions(
+  POLICY_DECIDED_ACTIONS,
+  VIEWER_ROLES.flatMap(role => [...role.actions]),
+  'POLICY_DECIDED_ACTIONS',
+)
+
+/**
+ * The endpoints one share may expose: offered by a plugin, selected by its owner, and not already decided
+ * by this policy.
+ *
+ * The share's own selection is the grant and the plugin offer is the capability: an endpoint reaches the
+ * reader only when both name it for the same plugin, so withdrawing either one withdraws access on the
+ * next decision. Selecting an endpoint a plugin no longer offers therefore grants nothing.
+ * @param offered - Endpoints plugins currently offer, grouped by declaring plugin.
+ * @param selected - Endpoints this share's owner selected, grouped the same way.
+ * @param kind - Endpoint kind to expose.
+ * @returns The actions this share may expose, in a stable order.
+ */
+function exposedCapabilities(
+  offered: readonly ViewerCapabilityGroup[],
+  selected: readonly ViewerCapabilityGroup[],
+  kind: 'readable' | 'writable',
+): RemoteAccessEndpoint[] {
+  const chosen = new Map(selected.map(group => [group.plugin, new Set<string>(group[kind])]))
+  const exposed = new Set<RemoteAccessEndpoint>()
+  for (const group of offered) {
+    const chosenByOwner = chosen.get(group.plugin)
+    if (chosenByOwner === undefined) continue
+    for (const action of group[kind]) {
+      if (chosenByOwner.has(action) && !POLICY_DECIDED_ACTIONS.has(action)) exposed.add(action)
+    }
+  }
+  return [...exposed].sort()
+}
+
+/**
+ * The role one declaration kind binds over one resource kind.
+ * @param name - Role name, for diagnostics.
+ * @param resource - Resource kind the role binds over.
+ * @param actions - Exposed endpoints the policy does not decide.
+ * @returns The role to bind on the resources the reader can see or write.
+ */
+function declarationRole<K extends RemoteAccessResourceKind>(
+  name: string,
+  resource: K,
+  actions: readonly RemoteAccessAction[],
+): RemoteAccessRole<K> {
+  return { name, resource, actions }
+}
+
+const ALLOW: RemoteAccessDecision = Object.freeze({ kind: 'allow' })
+
+function answer(reason: string | undefined): RemoteAccessDecision {
+  return reason === undefined ? ALLOW : { kind: 'deny', reason }
+}
+
+/**
+ * The share one reader's call is decided against, or why it no longer serves that reader.
+ * @param facts - Share state the policy reads.
+ * @param shareId - Share the reader's calls arrive through.
+ * @param actor - Reader identity.
+ * @returns The serving share state, or the refusal, checked in the order the reader page reports them.
+ */
+function servingShare(
+  facts: Pick<ViewerAccessFacts, 'share' | 'viewerAdmitted'>,
+  shareId: string,
+  actor: ShareRpcActor,
+): { readonly share: ForkShareState } | { readonly refusal: ViewerShareRefusal } {
+  const share = facts.share(shareId)
+  if (share === undefined) return { refusal: 'share-not-found' }
+  if (share.stopped) return { refusal: 'share-stopped' }
+  if (isExpired(share.expiresAt, Date.now())) return { refusal: 'share-expired' }
+  return facts.viewerAdmitted(shareId, actor) ? { share } : { refusal: 'viewer-not-authorized' }
+}
+
+/**
+ * Why a reader may not write to the share at all, whatever action names the write.
+ *
+ * This is the whole share-level write decision: the tier the owner set, and the confined access layer a
+ * write needs. The policy's writable declarations share it, so a declaration can neither add a tier nor
+ * change a refusal code.
+ * @param mode - The share's drivable tier, absent while this host cannot establish one.
+ * @param confined - Whether the source Session carries a usable confined access layer.
+ * @returns The refusal code, or undefined when the share permits writes.
+ */
+function shareWriteRefusal(mode: ViewerSessionMode | undefined, confined: boolean): string | undefined {
+  if (mode !== 'write') return 'share-not-writable'
+  return confined ? undefined : 'source-write-unavailable'
+}
+
+/**
+ * Why a reader may not prompt or stop the shared Session.
+ *
+ * Both tiers drive the shared Session, so the tier decides nothing beyond whether this host established
+ * one at all: what a reader needs is the confined access layer that keeps its turn inside the granted
+ * workspace, and a share whose tier this host cannot establish is not driven. Prompt and cancel share the
+ * rule because both are dispatched to the owner's own Session controller, whose cancel stops whatever turn
+ * the Session is running.
+ * @param mode - The share's drivable tier, absent while this host cannot establish one.
+ * @param confined - Whether the source Session carries a usable confined access layer.
+ * @returns The refusal code, or undefined when allowed.
+ */
+function sourceWriteRefusal(
+  mode: ViewerSessionMode | undefined,
+  confined: boolean,
+): string | undefined {
+  return mode === undefined || !confined ? 'source-write-unavailable' : undefined
+}
+
+/**
+ * Why a reader may not prompt or stop one of its own forks.
+ *
+ * Only a concrete prompt needs the child's installed ceiling: a cold child gets it when the reader's first
+ * prompt prepares it, so the snapshot keeps that child's composer available. The share's tier decides
+ * nothing here: a child runs under its own read-only ceiling and a write-tier child under this host's
+ * bounded write, so a view-tier viewer still drives the child it was allowed to create.
+ * @param child - The reader's fork record.
+ * @param action - A write action of the child write role.
+ * @param concrete - True for a concrete call, false for the snapshot answer.
+ * @param allowsPrompt - The fork registry's prompt decision for that child and reader.
+ * @returns The refusal code, or undefined when allowed.
+ */
+function childWriteRefusal(
+  child: ForkRecord,
+  action: RemoteAccessAction,
+  concrete: boolean,
+  allowsPrompt: () => ReturnType<ForkRegistry['allowsPrompt']>,
+): string | undefined {
+  if (child.revokedAt !== undefined) return 'fork-source-revoked'
+  if (action !== 'session/prompt' || !concrete) return undefined
+  const decision = allowsPrompt()
+  return decision.ok ? undefined : decision.code
+}
+
+/**
+ * The tier a share may be driven with, absent while this host cannot establish one.
+ *
+ * An absent tier is not `view`: a share this host cannot place is not driven at all, so every driving
+ * decision refuses it rather than offering a reach nobody established.
+ * @param share - The serving share state.
+ * @returns The drivable tier, or undefined.
+ */
+function drivableMode(share: ForkShareState): ViewerSessionMode | undefined {
+  return share.sessionMode
+}
+
+/**
+ * The reader's own fork of this share one Session is, revoked or not.
+ * @param facts - Share state the policy reads.
+ * @param viewer - The reader.
+ * @param sessionId - Session to look up.
+ * @returns The fork record, or undefined when the Session is not a fork this reader created through this share.
+ */
+function ownFork(
+  facts: Pick<ViewerAccessFacts, 'forks'>,
+  viewer: ShareViewerPrincipal,
+  sessionId: string,
+): ForkRecord | undefined {
+  const child = facts.forks.find(sessionId)
+  return child?.shareId === viewer.shareId && identityKeyOf(child.creator) === identityKeyOf(viewer.actor)
+    ? child
+    : undefined
+}
+
+/**
+ * Why a write names a Session that is neither the shared one nor one of the reader's own forks.
+ * @param facts - Share state the policy reads.
+ * @param viewer - The reader.
+ * @param sessionId - Session the write names.
+ * @returns `fork-viewer-mismatch` for another reader's fork of this share, otherwise `fork-unknown-child`.
+ */
+function foreignWriteRefusal(
+  facts: Pick<ViewerAccessFacts, 'forks'>,
+  viewer: ShareViewerPrincipal,
+  sessionId: string,
+): 'fork-unknown-child' | 'fork-viewer-mismatch' {
+  return facts.forks.find(sessionId)?.shareId === viewer.shareId ? 'fork-viewer-mismatch' : 'fork-unknown-child'
+}
+
+/**
+ * The refusal code of one reader prompt or cancel, by the rules the policy's write bindings apply.
+ *
+ * The viewer reader reads this before it prepares or dispatches a write, so that a refusal keeps the
+ * page's code and a refused write prepares nothing. The Gateway decides every dispatched call again from
+ * the policy.
+ * @param facts - Share state the policy reads.
+ * @param viewer - The reader.
+ * @param action - The write action.
+ * @param sessionId - Session the write names.
+ * @param concrete - True for a concrete call, false for the snapshot answer.
+ * @returns The refusal code, or undefined when the policy allows the write.
+ */
+export function readerWriteRefusal(
+  facts: ViewerAccessFacts,
+  viewer: ShareViewerPrincipal,
+  action: ReaderWriteAction,
+  sessionId: string,
+  concrete: boolean,
+): string | undefined {
+  const serving = servingShare(facts, viewer.shareId, viewer.actor)
+  if ('refusal' in serving) return serving.refusal
+  const mode = drivableMode(serving.share)
+  if (sessionId === serving.share.sessionId) {
+    return sourceWriteRefusal(mode, facts.sourceConfined(viewer.shareId))
+  }
+  const child = ownFork(facts, viewer, sessionId)
+  if (child === undefined) return foreignWriteRefusal(facts, viewer, sessionId)
+  return childWriteRefusal(child, action, concrete, () => facts.forks.allowsPrompt(sessionId, viewer.actor))
+}
+
+/**
+ * Why no binding allows one reader request: the share's refusal, the fork or write target's refusal,
+ * or read-only.
+ *
+ * The shared Session and every own fork carry bindings whose conditions name their own refusals, so a
+ * fork or write refused here names some other Session.
+ * @param facts - Share state the policy reads.
+ * @param request - The refused request.
+ * @returns The refusal code the reader page classifies.
+ */
+function explainReaderRefusal(facts: ViewerAccessFacts, request: RemoteAccessRequest<ShareViewerPrincipal>): string {
+  const viewer = request.principal
+  const serving = servingShare(facts, viewer.shareId, viewer.actor)
+  if ('refusal' in serving) return serving.refusal
+  for (const resource of request.resources) {
+    if (resource.kind !== 'session' || resource.id === serving.share.sessionId) continue
+    if (request.action === 'session/fork') return 'source-session-mismatch'
+    if (request.action === 'session/prompt' || request.action === 'session/cancel') {
+      return foreignWriteRefusal(facts, viewer, resource.id)
+    }
+  }
+  return VIEWER_READ_ONLY_CODE
+}
+
+/**
+ * Build the `share-viewer` policy for this host's shares.
+ * @param facts - Share state the rules read.
+ * @returns The policy the share host registers for the `share-viewer` principal kind.
+ */
+export function createViewerAccessPolicy(facts: ViewerAccessFacts): RemoteAccessPolicy<ShareViewerPrincipal> {
+  return {
+    bindings(viewer): readonly RemoteAccessBinding[] {
+      const serving = servingShare(facts, viewer.shareId, viewer.actor)
+      if ('refusal' in serving) return []
+      const { share } = serving
+      const mode = drivableMode(share)
+      const source = SessionId(share.sessionId)
+      // Revoked forks stay bound for reading, so the reader's snapshot states them as read-only.
+      const children = facts.forks.listForShare(viewer.shareId)
+        .filter(child => identityKeyOf(child.creator) === identityKeyOf(viewer.actor))
+      const visible = new Set<string>([share.sessionId, ...children.map(child => child.childSessionId)])
+      /** Workspaces holding a Session the reader can see; only those may carry a declaration. */
+      const memberWorkspaces: Workspace['id'][] = []
+      const bindings: RemoteAccessBinding[] = [
+        { role: VIEWER_GLOBAL_ROLE, resource: { kind: 'global' } },
+        { role: VIEWER_SESSION_READ_ROLE, resource: { kind: 'session', id: source } },
+        {
+          role: VIEWER_FORK_ROLE,
+          resource: { kind: 'session', id: source },
+          condition: () => answer(share.allowsFork ? undefined : 'fork-not-permitted'),
+        },
+        {
+          role: VIEWER_SOURCE_WRITE_ROLE,
+          resource: { kind: 'session', id: source },
+          condition: () => answer(sourceWriteRefusal(mode, facts.sourceConfined(viewer.shareId))),
+        },
+      ]
+      for (const child of children) {
+        const id = SessionId(child.childSessionId)
+        bindings.push(
+          { role: VIEWER_SESSION_READ_ROLE, resource: { kind: 'session', id } },
+          {
+            role: VIEWER_FORK_ROLE,
+            resource: { kind: 'session', id },
+            // A revoked fork stays readable and nothing else, and a child's fork verb follows the same
+            // owner switch the shared Session's fork does.
+            condition: () => answer(
+              child.revokedAt !== undefined
+                ? 'fork-source-revoked'
+                : share.allowsFork ? undefined : 'fork-not-permitted',
+            ),
+          },
+          {
+            role: VIEWER_CHILD_ROLE,
+            resource: { kind: 'session', id },
+            condition: ({ action, args }: SessionConditionRequest) => answer(childWriteRefusal(
+              child, action, args !== undefined, () => facts.forks.allowsPrompt(child.childSessionId, viewer.actor),
+            )),
+          },
+        )
+      }
+      for (const workspace of facts.workspaces()) {
+        if (workspace.sessionIds.some(id => visible.has(id))) {
+          memberWorkspaces.push(workspace.id)
+          bindings.push({ role: VIEWER_WORKSPACE_ROLE, resource: { kind: 'workspace', id: workspace.id } })
+        }
+      }
+      // Exposed capabilities ride the resources the reader can already see, and they are appended after
+      // every binding above, so a share that exposes none keeps its previous binding order byte for byte.
+      // Both sides are read here, on every computation: the plugins' offer and this share's own selection,
+      // so either withdrawing its name decides the reader's next call while an open snapshot recomputes.
+      const offered = facts.declaredCapabilities()
+      const selected = share.viewerCapabilities ?? []
+      const readable = exposedCapabilities(offered, selected, 'readable')
+      if (readable.length > 0) {
+        bindings.push(
+          { role: declarationRole('liveshare:viewer-readable-global', 'global', readable), resource: { kind: 'global' } },
+        )
+        for (const id of [source, ...children.map(child => SessionId(child.childSessionId))]) {
+          bindings.push({ role: declarationRole('liveshare:viewer-readable-session', 'session', readable),
+            resource: { kind: 'session', id } })
+        }
+        for (const id of memberWorkspaces) {
+          bindings.push({ role: declarationRole('liveshare:viewer-readable-workspace', 'workspace', readable),
+            resource: { kind: 'workspace', id } })
+        }
+      }
+      // A writable capability is the one that changes the owner's machine, and the owner states consent
+      // for writes only through the share's session mode. Every binding therefore carries the same
+      // decision the source write role applies, so no offer and no selection can turn a read-only share
+      // into a writable one; a revoked fork stays read-only and carries none.
+      const writable = exposedCapabilities(offered, selected, 'writable')
+      if (writable.length > 0) {
+        const condition = (): RemoteAccessDecision =>
+          answer(shareWriteRefusal(mode, facts.sourceConfined(viewer.shareId)))
+        bindings.push(
+          { role: declarationRole('liveshare:viewer-writable-global', 'global', writable),
+            resource: { kind: 'global' }, condition },
+          { role: declarationRole('liveshare:viewer-writable-session', 'session', writable),
+            resource: { kind: 'session', id: source }, condition },
+        )
+        for (const child of children) {
+          if (child.revokedAt === undefined) {
+            bindings.push({ role: declarationRole('liveshare:viewer-writable-session', 'session', writable),
+              resource: { kind: 'session', id: SessionId(child.childSessionId) }, condition })
+          }
+        }
+        for (const id of memberWorkspaces) {
+          bindings.push({ role: declarationRole('liveshare:viewer-writable-workspace', 'workspace', writable),
+            resource: { kind: 'workspace', id }, condition })
+        }
+      }
+      return bindings
+    },
+    explain: request => explainReaderRefusal(facts, request),
+  }
+}
diff --git a/packages/experimental/liveshare/src/host/viewer-assets.ts b/packages/experimental/liveshare/src/host/viewer-assets.ts
new file mode 100644
index 0000000000..d8d8f135aa
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/viewer-assets.ts
@@ -0,0 +1,59 @@
+/**
+ * Owner-side resources of the served viewer page: the rendered index, shell assets, and client
+ * plugin bundles, read for a viewer the Relay already authenticated.
+ *
+ * The page is the owner's own Web shell, so every byte comes from the services that serve the owner's
+ * page: the webserver's resource read for the index and shell assets, and the client module registry for
+ * plugin bundles. The resource read receives the reader's own Peer, so the index renders that reader's
+ * opening access snapshot and the page offers only what it may call from its first render.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/viewer-assets
+ */
+
+import type { Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/dsh-client-modules'
+import type {} from '@deepseek-ai/dsh-host-webserver'
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import type { ViewerAnswer, ViewerAssetBody } from '../viewer-channel.ts'
+
+/** Placeholder origin the page-relative path is resolved against; only the path and query are read. */
+const ASSET_ORIGIN = 'http://viewer.invalid/'
+
+/**
+ * Read one served-page resource.
+ * @param ctx - Owner Host context carrying the webserver and the client module registry.
+ * @param path - Validated page-relative path and query: the index, `assets/...`, or `plugins/...`.
+ * @param peer - The reader's own Peer; the page resource renders the opening access rows for it.
+ * @returns The answer the Relay serves for that path.
+ */
+export async function readViewerAsset(ctx: Context, path: string, peer: PeerScope): Promise<ViewerAnswer> {
+  const target = new URL(path, ASSET_ORIGIN)
+  if (path.startsWith('plugins/')) {
+    const modules = ctx.get('clientModules')
+    if (modules === undefined) return unavailable()
+    const response = await modules.fetchBundle(new Request(target))
+    if (!response.ok) return { status: response.status, body: { error: 'asset-not-found' } }
+    return assetAnswer(
+      response.headers.get('content-type') ?? 'text/javascript; charset=utf-8',
+      new Uint8Array(await response.arrayBuffer()),
+    )
+  }
+  const webServer = ctx.get('webServer')
+  if (webServer === undefined) return unavailable()
+  // The URL carries what an HTTP request would: the resource reads only its path and query, so a
+  // placeholder origin is enough and no listener address or protocol is needed here.
+  const response = await webServer.readResource(new Request(target), peer)
+  if (!response.ok) return { status: response.status, body: { error: 'asset-not-found' } }
+  return assetAnswer(
+    response.headers.get('content-type') ?? 'application/octet-stream',
+    new Uint8Array(await response.arrayBuffer()),
+  )
+}
+
+function assetAnswer(contentType: string, body: Uint8Array): ViewerAnswer {
+  return { status: 200, body: { contentType, base64: Buffer.from(body).toString('base64') } satisfies ViewerAssetBody }
+}
+
+function unavailable(): ViewerAnswer {
+  return { status: 503, body: { error: 'viewer-page-unavailable' } }
+}
diff --git a/packages/experimental/liveshare/src/host/viewer-capability-selection.ts b/packages/experimental/liveshare/src/host/viewer-capability-selection.ts
new file mode 100644
index 0000000000..a0aac99abf
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/viewer-capability-selection.ts
@@ -0,0 +1,128 @@
+/**
+ * Reading one share's owner-submitted plugin endpoint selection against the live offers.
+ *
+ * The owner panel submits what the owner ticked; the plugins' own declarations decide what may be
+ * ticked at all. A submission is therefore accepted only where the plugin still offers every named
+ * endpoint under the kind it was named with, and a name nothing offers is refused by name instead of
+ * being stored as a selection no decision can ever expose.
+ *
+ * The result is the value the share record carries: absent when the owner exposed nothing, so a share
+ * written before the selection existed keeps meaning "none", and an explicit empty submission clears
+ * the field rather than storing an empty list.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/viewer-capability-selection
+ */
+
+import type { RemoteAccessEndpoint } from '@deepseek-ai/dsh-api-remote-access/types'
+import type { ViewerCapabilityGroup } from './viewer-declarations.ts'
+import { isRecord } from './wire-json.ts'
+
+/** One endpoint kind a submission may name. */
+type CapabilityKind = 'readable' | 'writable'
+
+/** The endpoints one plugin's accepted submission names, by kind. */
+interface ChosenEndpoints {
+  readonly readable: Set<RemoteAccessEndpoint>
+  readonly writable: Set<RemoteAccessEndpoint>
+}
+
+/**
+ * Why one submission was refused, as the owner panel and the tests read it.
+ *
+ * The codes are stable and narrow: a malformed body, a plugin the live offers do not name, or an
+ * endpoint that plugin does not offer under the kind it was submitted with. The last two carry what
+ * they refused, so a refusal names the offending plugin or endpoint instead of only that one is.
+ */
+export type ViewerCapabilityRefusal =
+  | { readonly code: 'invalid-capabilities' }
+  | { readonly code: 'unknown-plugin'; readonly plugin: string }
+  | {
+    readonly code: 'endpoint-not-offered'
+    readonly plugin: string
+    readonly kind: CapabilityKind
+    readonly endpoint: string
+  }
+
+/** The accepted selection, or the refusal that replaces it. */
+export type ViewerCapabilitySelection =
+  | {
+    readonly ok: true
+    /**
+     * The endpoints this share exposes, grouped by plugin in offer order, or undefined when the
+     * submission exposed none. Undefined is what the share record omits: no field means no exposure.
+     */
+    readonly selection: readonly ViewerCapabilityGroup[] | undefined
+  }
+  | { readonly ok: false; readonly refusal: ViewerCapabilityRefusal }
+
+/**
+ * Whether one submitted value is a JSON object.
+ * @param value - Candidate value.
+ * @returns True for a JSON object.
+ */
+/**
+ * Read one submitted endpoint list, keeping the shape rule in one place.
+ * @param value - Submitted value for `readable` or `writable`.
+ * @returns The names, or undefined when the value is not an array of non-empty strings.
+ */
+function endpointNames(value: unknown): readonly string[] | undefined {
+  if (!Array.isArray(value)) return undefined
+  const names: string[] = []
+  for (const name of value) {
+    if (typeof name !== 'string' || name === '') return undefined
+    names.push(name)
+  }
+  return names
+}
+
+/**
+ * Accept one submission against the endpoints plugins currently offer.
+ *
+ * A plugin group that names no endpoint is dropped, because it exposes nothing; a submission that
+ * names nothing at all resolves to an absent selection, which is the field the share record omits.
+ * @param offered - Endpoints plugins currently offer, grouped by declaring plugin.
+ * @param input - Submitted `capabilities` value, of any type.
+ * @returns The selection to store, or the refusal that replaces it.
+ */
+export function readViewerCapabilitySelection(
+  offered: readonly ViewerCapabilityGroup[],
+  input: unknown,
+): ViewerCapabilitySelection {
+  if (!Array.isArray(input)) return { ok: false, refusal: { code: 'invalid-capabilities' } }
+  const offeredByPlugin = new Map(offered.map(group => [group.plugin, group]))
+  const chosen = new Map<string, ChosenEndpoints>()
+  for (const entry of input) {
+    if (!isRecord(entry)) return { ok: false, refusal: { code: 'invalid-capabilities' } }
+    const plugin = entry.plugin
+    if (typeof plugin !== 'string' || plugin === '') {
+      return { ok: false, refusal: { code: 'invalid-capabilities' } }
+    }
+    const readable = endpointNames(entry.readable)
+    const writable = endpointNames(entry.writable)
+    if (readable === undefined || writable === undefined) {
+      return { ok: false, refusal: { code: 'invalid-capabilities' } }
+    }
+    const group = offeredByPlugin.get(plugin)
+    if (group === undefined) return { ok: false, refusal: { code: 'unknown-plugin', plugin } }
+    const selected = chosen.get(plugin)
+      ?? { readable: new Set<RemoteAccessEndpoint>(), writable: new Set<RemoteAccessEndpoint>() }
+    for (const [kind, endpoints] of [['readable', readable], ['writable', writable]] as const) {
+      for (const endpoint of endpoints) {
+        const accepted = group[kind].find(candidate => candidate === endpoint)
+        if (accepted === undefined) {
+          return { ok: false, refusal: { code: 'endpoint-not-offered', plugin, kind, endpoint } }
+        }
+        selected[kind].add(accepted)
+      }
+    }
+    chosen.set(plugin, selected)
+  }
+  const selection = offered.flatMap((group): readonly ViewerCapabilityGroup[] => {
+    const selected = chosen.get(group.plugin)
+    if (selected === undefined) return []
+    const readable = [...selected.readable].sort()
+    const writable = [...selected.writable].sort()
+    return readable.length === 0 && writable.length === 0 ? [] : [{ plugin: group.plugin, readable, writable }]
+  })
+  return { ok: true, selection: selection.length === 0 ? undefined : selection }
+}
diff --git a/packages/experimental/liveshare/src/host/viewer-declarations.ts b/packages/experimental/liveshare/src/host/viewer-declarations.ts
new file mode 100644
index 0000000000..f5d96d842a
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/viewer-declarations.ts
@@ -0,0 +1,369 @@
+/**
+ * Temporary: the Remote endpoints plugins offer to share viewers.
+ *
+ * A plugin that owns an endpoint the served viewer page needs declares it here, because the `share-viewer`
+ * policy decides every viewer call and enumerates only the core endpoints. **A declaration is an offer, not
+ * a grant**: it says the plugin asserts the endpoint may be called from a share, and grants nothing by
+ * itself. The owner exposes it by selecting that plugin's endpoint in one share, and only the intersection
+ * of the live declarations with one share's own selection reaches that share's viewers.
+ *
+ * This surface is **temporary**: it is replaced by endpoint-level access declarations in Typert metadata,
+ * and it is deleted once that metadata names each endpoint's access class; do not build a long-term
+ * integration on it.
+ *
+ * The service carries no `Context` key of its own, so a plugin reads it through
+ * {@link viewerDeclarationsOf}, which preserves the calling context; the lookup is untyped by
+ * construction, so the accessor narrows the value it finds.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/viewer-declarations
+ */
+
+import { Service, type Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/cordis-plugin-loader'
+import { isTypertRemoteSegment, type InvocationDescriptor } from '@deepseek-ai/dsh-typert-protocol'
+import type { RemoteAccessEndpoint } from '@deepseek-ai/dsh-api-remote-access/types'
+
+/**
+ * Name the capability service is provided under. Deliberately not a `Context` key: a key would enter the
+ * generated Cordis API catalog, whose partitions this change must not touch.
+ */
+export const VIEWER_DECLARATIONS_SERVICE = 'liveshareViewerDeclarations'
+
+/** One plugin's endpoints of each kind, in the shape the share panel and the share record both use. */
+export interface ViewerCapabilityGroup {
+  /** Owning npm package of the declaring plugin, shown beside each choice. */
+  readonly plugin: string
+  /** Readable endpoints of that plugin, sorted. */
+  readonly readable: readonly RemoteAccessEndpoint[]
+  /** Writable endpoints of that plugin, sorted. */
+  readonly writable: readonly RemoteAccessEndpoint[]
+}
+
+/** The endpoint kinds one declaration can offer. */
+type CapabilityKind = 'readable' | 'writable'
+
+/** What one declaration kind is called in its failure message. */
+type DeclarationKind = 'viewer-readable' | 'viewer-writable'
+
+/**
+ * The declaration surface as a consumer reads it: the operations a provider must offer.
+ *
+ * Consumers narrow the service values they find structurally rather than by `ViewerDeclarations` class
+ * identity, because the Loader instantiates a module once per entry: the entry that provides the surface and
+ * the entry that mounts the share host hold different classes for the same value, and `instanceof` refuses
+ * the provider's own instance.
+ */
+export interface ViewerDeclarationsSurface {
+  /** Offer endpoints that change nothing; see {@link ViewerDeclarations.registerViewerReadable}. */
+  registerViewerReadable(actions: readonly string[]): () => void
+  /** Offer endpoints that write; see {@link ViewerDeclarations.registerViewerWritable}. */
+  registerViewerWritable(actions: readonly string[]): () => void
+  /** Observe every change to the offered set; see {@link ViewerDeclarations.onChanged}. */
+  onChanged(listener: () => void): () => void
+  /** The endpoints plugins currently offer; see {@link ViewerDeclarations.declaredCapabilities}. */
+  declaredCapabilities(): readonly ViewerCapabilityGroup[]
+}
+
+/**
+ * Test one service value for the whole declaration surface.
+ * @param value - Value found under the service key.
+ * @returns Whether every method of {@link ViewerDeclarationsSurface} is callable.
+ */
+function isViewerDeclarationsSurface(value: unknown): value is ViewerDeclarationsSurface {
+  if (typeof value !== 'object' || value === null) return false
+  const surface = value as Partial<Record<keyof ViewerDeclarationsSurface, unknown>>
+  return typeof surface.registerViewerReadable === 'function'
+    && typeof surface.registerViewerWritable === 'function'
+    && typeof surface.onChanged === 'function'
+    && typeof surface.declaredCapabilities === 'function'
+}
+
+/**
+ * Test one plugin-authored name against the Remote endpoint grammar.
+ *
+ * The `<namespace>/<method>` template type admits names this grammar rejects — an empty segment, a third
+ * segment, an `event:` prefix, or whitespace — and plugin names cross a package boundary, so the grammar
+ * is checked here.
+ * @param action - Candidate endpoint name.
+ * @returns Whether the name is exactly two Remote name segments.
+ */
+function isDeclaredEndpoint(action: string): action is RemoteAccessEndpoint {
+  const segments = action.split('/')
+  if (segments.length !== 2) return false
+  const [namespace, method] = segments
+  return namespace !== undefined && method !== undefined
+    && isTypertRemoteSegment(namespace) && isTypertRemoteSegment(method)
+}
+
+/**
+ * Accept every name of one declaration, or none of them.
+ * @param actions - The names one declaration carries.
+ * @param kind - Declaration kind named in the failure message.
+ * @returns The accepted names, in declaration order and without duplicates.
+ * @throws {TypeError} When one name is not a `<namespace>/<method>` Remote endpoint; no name registers.
+ */
+function acceptedEndpoints(actions: readonly string[], kind: DeclarationKind): RemoteAccessEndpoint[] {
+  const accepted = new Set<RemoteAccessEndpoint>()
+  for (const action of actions) {
+    if (!isDeclaredEndpoint(action)) {
+      throw new TypeError(
+        `liveshare: ${kind} endpoint ${JSON.stringify(action)} must be a <namespace>/<method> Remote endpoint`)
+    }
+    accepted.add(action)
+  }
+  return [...accepted]
+}
+
+/**
+ * Read the owning package out of one live endpoint's generated identity.
+ *
+ * A generated invocation id is `<package>#<namespace>/<method>`, so the text before the endpoint's own
+ * suffix names the package whose artifact defined it. An identity of any other form has no owner this check
+ * can trust, so it refuses instead of guessing.
+ * @param descriptor - Live Host invocation definition.
+ * @param endpoint - The endpoint the declaration named.
+ * @returns The owning package, or undefined when the identity does not end in `#<endpoint>`.
+ */
+function owningPackageOf(descriptor: InvocationDescriptor, endpoint: RemoteAccessEndpoint): string | undefined {
+  const suffix = `#${endpoint}`
+  if (!descriptor.id.endsWith(suffix)) return undefined
+  const owner = descriptor.id.slice(0, -suffix.length)
+  return owner === '' ? undefined : owner
+}
+
+/**
+ * Accept one declaration only from the package that owns every endpoint it names.
+ *
+ * The declaring package is the Loader entry's module name, which the Loader owns and a plugin cannot
+ * report; `ctx.fiber.name` is a display name shared by a plugin's nested mounts and is deliberately not
+ * used here. Ownership is read from the Host's local Typert registry, the same definitions the Gateway
+ * dispatches, so an endpoint that exists only in a plugin's source cannot be declared.
+ *
+ * Fail-closed: an endpoint the local registry does not define, a declaring fiber with no Loader entry, a
+ * generated identity that does not name an owner, and an owner mismatch each refuse the whole declaration
+ * with the reason that refused it. Two compositions therefore cannot declare viewer endpoints: a
+ * programmatic `ctx.plugin()` composition has no Loader entry, and a nested or aliased entry's
+ * `options.name` is the specifier of the entry that mounted it, which need not equal the npm package name
+ * of the plugin's own package.
+ * @param caller - The declaring plugin's context; its fiber carries the Loader entry name.
+ * @param actions - Endpoints the declaration carries, already syntax-checked.
+ * @param label - Declaration kind named in the failure message.
+ * @returns The verified owning package, recorded as the offer's attribution.
+ * @throws {TypeError} When one endpoint is not a live Host endpoint, the declaring fiber has no Loader entry
+ *   name, its identity names no owner, or the owner is another package; no endpoint of the declaration
+ *   registers.
+ */
+function declaringPackage(caller: Context, actions: readonly RemoteAccessEndpoint[], label: DeclarationKind): string {
+  const declaring = caller.fiber.entry?.options.name
+  if (declaring === undefined) {
+    throw new TypeError(
+      `liveshare: ${label} endpoints ${JSON.stringify(actions)} have no declaring package: `
+      + 'the plugin has no Loader entry name, which a programmatic ctx.plugin() composition cannot supply')
+  }
+  const local = caller.get('typert')?.local
+  for (const action of actions) {
+    const descriptor = local?.get(action)
+    if (descriptor === undefined) {
+      throw new TypeError(
+        `liveshare: ${label} endpoint ${JSON.stringify(action)} is not a live Host Remote endpoint `
+        + '(declare it after the owning package\'s Typert artifact has registered)')
+    }
+    const owner = owningPackageOf(descriptor, action)
+    if (owner === undefined) {
+      throw new TypeError(
+        `liveshare: ${label} endpoint ${JSON.stringify(action)} has generated id `
+        + `${JSON.stringify(descriptor.id)}, which does not name an owning package`)
+    }
+    if (owner !== declaring) {
+      throw new TypeError(
+        `liveshare: ${label} endpoint ${JSON.stringify(action)} belongs to package ${JSON.stringify(owner)}, `
+        + `not to the declaring package ${JSON.stringify(declaring)}`)
+    }
+  }
+  return declaring
+}
+
+/**
+ * Temporary: the endpoints plugins offer to share viewers.
+ *
+ * A declaration is checked before it is accepted: every endpoint must be a live Host Remote definition
+ * owned by the declaring plugin's own package (see {@link declaringPackage}). The declaring plugin owns
+ * the endpoint's confinement, because a declared endpoint's arguments arrive from an untrusted viewer; no
+ * argument may be treated as authority.
+ *
+ * A declaration is an offer: the owner exposes an offered endpoint per share, and a declaration on its own
+ * grants no viewer anything. Registration is a Cordis effect of the CALLER's fiber: read the service
+ * through {@link viewerDeclarationsOf} so that Cordis traces the calling context. Disposing the declaring
+ * plugin, or calling the returned disposer, withdraws exactly the names that call registered, and a share
+ * whose owner selected one of them stops exposing it on the next decision. A name declared more than once
+ * stays offered until the last registration naming it is disposed.
+ *
+ * The Liveshare bundle provides this service in its own load phase, before the share host — which waits for
+ * a Relay connection — starts, so a plugin that offers endpoints at its own load time finds it. The share
+ * host is one consumer: it reads the same service and subscribes through {@link onChanged}.
+ *
+ * The endpoints a declaration names are the Host's local Typert registrations. typert-loader registers a
+ * package's artifact asynchronously, so an offer made from the package's own load body runs before its
+ * endpoints exist; a plugin in that position must declare once its package's artifact is registered.
+ */
+export class ViewerDeclarations extends Service implements ViewerDeclarationsSurface {
+  /** Live readable declarations: endpoint → owning package → live registrations. */
+  private readonly readable = new Map<RemoteAccessEndpoint, Map<string, number>>()
+  /** Live writable declarations, keyed the same way. */
+  private readonly writable = new Map<RemoteAccessEndpoint, Map<string, number>>()
+  /** Live change listeners, called after every registration and disposal. */
+  private readonly changed = new Set<() => void>()
+
+  /**
+   * Provide the capability surface on `ctx`.
+   * @param ctx - Context that provides the service; the service goes away with its fiber.
+   */
+  constructor(ctx: Context) {
+    super(ctx, VIEWER_DECLARATIONS_SERVICE)
+  }
+
+  /**
+   * Observe every change to the offered set.
+   *
+   * A consumer that derives decisions from {@link declaredCapabilities} recomputes them here; a listener
+   * registered after a declaration still receives every later change. Bind the returned disposer to the
+   * subscriber's own fiber so the listener goes away with it.
+   * @param listener - Called after each registration and disposal that changed the offered set.
+   * @returns Disposer removing this listener.
+   */
+  onChanged(listener: () => void): () => void {
+    this.changed.add(listener)
+    return () => { this.changed.delete(listener) }
+  }
+
+  /** Tell every live listener that the offered set may have changed. */
+  private notifyChanged(): void {
+    for (const listener of [...this.changed]) listener()
+  }
+
+  /**
+   * Temporary: lets a plugin declare endpoints it asserts are read-only and safe to expose to any
+   * authenticated share viewer. Superseded by endpoint-level access declarations in Typert metadata,
+   * and this surface is deleted once they land; do not build a long-term integration on it.
+   *
+   * The assertion covers three obligations: the endpoint changes no Host state; it starts no work, sends
+   * nothing, and schedules nothing; and any authenticated share viewer may call it on the resources the
+   * share exposes. **This call is an offer and grants nothing**: the owner must select the endpoint in one
+   * share before that share's viewers may call it.
+   * @param actions - Endpoint names, each `<namespace>/<method>`.
+   * @returns Disposer withdrawing the names this call registered.
+   * @throws {TypeError} When a name is not a `<namespace>/<method>` Remote endpoint, the Host does not
+   *   define it, or the declaring package does not own it; no name registers.
+   */
+  registerViewerReadable(actions: readonly string[]): () => void {
+    return this.declare(this.readable, this.ctx, 'readable', actions, 'viewer-readable')
+  }
+
+  /**
+   * Temporary: lets a plugin declare endpoints it asserts are safe to invoke from a share **whose session
+   * mode already allows writes**. Superseded by endpoint-level access declarations in Typert metadata,
+   * and this surface is deleted once they land; do not build a long-term integration on it.
+   *
+   * **This call is an offer and grants nothing, and it never escalates a read-only share.** A writable
+   * endpoint is exposed only when the owner also selects it for that share, and the owner states consent
+   * for writes only through the share's session mode, so a `view` share refuses it
+   * whether it is declared and selected or not. A declared write endpoint runs on the owner's machine, so
+   * the plugin owns its confinement.
+   * @param actions - Endpoint names, each `<namespace>/<method>`.
+   * @returns Disposer withdrawing the names this call registered.
+   * @throws {TypeError} When a name is not a `<namespace>/<method>` Remote endpoint, the Host does not
+   *   define it, or the declaring package does not own it; no name registers.
+   */
+  registerViewerWritable(actions: readonly string[]): () => void {
+    return this.declare(this.writable, this.ctx, 'writable', actions, 'viewer-writable')
+  }
+
+  /**
+   * The endpoints plugins currently offer, grouped by owning package and sorted.
+   *
+   * This is the offer list the share panel presents; it is not what any share exposes.
+   * @returns One group per owning package with at least one live declaration.
+   */
+  declaredCapabilities(): readonly ViewerCapabilityGroup[] {
+    const plugins = new Map<string, { readable: Set<RemoteAccessEndpoint>; writable: Set<RemoteAccessEndpoint> }>()
+    for (const [kind, declared] of [['readable', this.readable], ['writable', this.writable]] as const) {
+      for (const [action, byPlugin] of declared) {
+        for (const plugin of byPlugin.keys()) {
+          const group = plugins.get(plugin) ?? { readable: new Set(), writable: new Set() }
+          group[kind].add(action)
+          plugins.set(plugin, group)
+        }
+      }
+    }
+    return [...plugins]
+      .map(([plugin, group]) => ({
+        plugin,
+        readable: [...group.readable].sort(),
+        writable: [...group.writable].sort(),
+      }))
+      .sort((left, right) => left.plugin.localeCompare(right.plugin))
+  }
+
+  /**
+   * Register one declaration kind as an effect of `caller`, the declaring plugin's own context.
+   * @param declared - Live declarations of that kind.
+   * @param caller - Context the effect binds to; the caller's context, not the share host's.
+   * @param kind - Endpoint kind the declaration offers.
+   * @param actions - Endpoint names the declaration carries.
+   * @param label - Declaration kind named in the failure message.
+   * @returns Disposer withdrawing the names this call registered.
+   * @throws {TypeError} When a name is not a `<namespace>/<method>` Remote endpoint, the Host does not
+   *   define it, or the declaring package does not own it; no name registers.
+   */
+  private declare(
+    declared: Map<RemoteAccessEndpoint, Map<string, number>>,
+    caller: Context,
+    kind: CapabilityKind,
+    actions: readonly string[],
+    label: DeclarationKind,
+  ): () => void {
+    const accepted = acceptedEndpoints(actions, label)
+    if (accepted.length === 0) return () => {}
+    // Attribution is the verified owning package, so the panel groups by what the Host compiled, not by a
+    // display name a plugin could choose.
+    const plugin = declaringPackage(caller, accepted, label)
+    const dispose = caller.effect(() => {
+      for (const action of accepted) {
+        const byPlugin = declared.get(action) ?? new Map<string, number>()
+        byPlugin.set(plugin, (byPlugin.get(plugin) ?? 0) + 1)
+        declared.set(action, byPlugin)
+      }
+      this.notifyChanged()
+      return () => {
+        for (const action of accepted) {
+          const byPlugin = declared.get(action)
+          // This effect registered each accepted name once, so its own disposer always finds its
+          // entry and its count; the two guards below only satisfy lookups typed as optional.
+          /* v8 ignore next -- repeated withdrawal is not a state this effect can reach. */
+          if (byPlugin === undefined) continue
+          /* v8 ignore next -- the count cannot be absent for a registration this effect made. */
+          const remaining = (byPlugin.get(plugin) ?? 1) - 1
+          if (remaining > 0) byPlugin.set(plugin, remaining)
+          else byPlugin.delete(plugin)
+          if (byPlugin.size === 0) declared.delete(action)
+        }
+        this.notifyChanged()
+      }
+    }, `liveshare.viewer-${kind}(${JSON.stringify(accepted)})`)
+    return () => { void dispose() }
+  }
+}
+
+/**
+ * Temporary: the capability surface of an application that mounts the Liveshare bundle.
+ *
+ * The lookup is deliberately untyped — the service declares no `Context` key, because such a key would
+ * have to enter the generated Cordis API catalog — so this accessor is the single narrowing point. It
+ * accepts any value that carries the whole {@link ViewerDeclarationsSurface}, so a provider reached through
+ * another Loader entry is read as the surface it is.
+ * @param ctx - Context in the application that may mount the bundle.
+ * @returns The capability surface, or undefined when this application mounts no Liveshare bundle.
+ */
+export function viewerDeclarationsOf(ctx: Context): ViewerDeclarationsSurface | undefined {
+  const found: unknown = ctx.get(VIEWER_DECLARATIONS_SERVICE)
+  return isViewerDeclarationsSurface(found) ? found : undefined
+}
diff --git a/packages/experimental/liveshare/src/host/viewer-dispatch.ts b/packages/experimental/liveshare/src/host/viewer-dispatch.ts
new file mode 100644
index 0000000000..b385d53a91
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/viewer-dispatch.ts
@@ -0,0 +1,791 @@
+/**
+ * Dispatch of one reader's viewer requests to the owner's own Connection and gateway.
+ *
+ * Endpoint classification, the source and child write paths, streams, page assets, and the request
+ * entry all live here. Each handler re-reads the share's lifecycle and the policy's write refusal at
+ * the points the original order required, and every resource it opens is tracked by viewer-lifecycle.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/viewer-dispatch
+ */
+
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import {
+  viewerReadOnlyAnswer,
+  viewerRequestTarget,
+  type ViewerAnswer,
+  type ViewerAssetBody,
+  type ViewerRequest,
+} from '../viewer-channel.ts'
+import { STREAM_BATCH_MAX, STREAM_BATCH_WINDOW_MS, STREAM_POLL_HOLD_MS, STREAM_POLL_SLACK_MS } from '../read-budgets.ts'
+import type { ViewerReadDeps } from './viewer-read.ts'
+import type { OpenStream, ViewerLifecycle } from './viewer-lifecycle.ts'
+import type { ViewerFork } from './viewer-fork.ts'
+import { isRecord } from './wire-json.ts'
+
+function sameActor(left: ShareRpcActor, right: ShareRpcActor): boolean {
+  return identityKeyOf(left) === identityKeyOf(right)
+}
+
+/**
+ * The caller's stable identifier for one logical fork request.
+ *
+ * An explicit request field wins; otherwise the caller's `rpcId` names that same intent, because a
+ * retry re-sends the same envelope. The boundary is deliberately not read here.
+ * @param envelope - Opaque request body the viewer sent.
+ * @returns The operation id, or undefined when the caller named no operation at all.
+ */
+export function requestedOperationId(envelope: unknown): string | undefined {
+  const request = viewerRequestTarget(envelope)
+  const explicit = request?.operationId
+  if (typeof explicit === 'string' && explicit !== '') return explicit
+  if (!isRecord(envelope)) return undefined
+  const rpcId = envelope.rpcId
+  return typeof rpcId === 'string' && rpcId !== '' ? `rpc:${rpcId}` : undefined
+}
+
+/**
+ * The correlation id of one request envelope, when it carries one.
+ * @param envelope - Opaque request body the viewer sent.
+ * @returns The caller's id, or undefined.
+ */
+export function requestedRpcId(envelope: unknown): string | undefined {
+  if (!isRecord(envelope)) return undefined
+  return typeof envelope.rpcId === 'string' && envelope.rpcId !== '' ? envelope.rpcId : undefined
+}
+
+/**
+ * The completed-history prefix one fork request asks its child to branch from.
+ *
+ * A body that names none, or names something other than a safe integer, leaves the boundary unnamed:
+ * the fork path then branches at the share's last completed prefix, or at 0 when the share published
+ * none.
+ * @param body - Opaque request body the viewer sent.
+ * @returns The safe-integer boundary, or undefined when the request names none.
+ */
+export function requestedBoundary(body: unknown): number | undefined {
+  const request = viewerRequestTarget(body)
+  if (request === undefined) return undefined
+  const value = request.atSeq
+  return typeof value === 'number' && Number.isSafeInteger(value) && value >= 0 ? value : undefined
+}
+
+/**
+ * The Session one prompt, cancel, or fork envelope names.
+ * @param envelope - Opaque request body the viewer sent.
+ * @returns The `sessionId` of the request record, or undefined when it names none.
+ */
+export function requestedSessionId(envelope: unknown): string | undefined {
+  const sessionId = viewerRequestTarget(envelope)?.sessionId
+  return typeof sessionId === 'string' && sessionId !== '' ? sessionId : undefined
+}
+
+/**
+ * The ordinary Session a `session/page` or `session/follow` request addresses.
+ * @param envelope - Unary envelope or stream payload the viewer sent.
+ * @returns The Session id for a `session` address, or undefined for any other address.
+ */
+export function requestedAddressSession(envelope: unknown): string | undefined {
+  const address = viewerRequestTarget(envelope)?.address
+  if (!isRecord(address) || address.kind !== 'session') return undefined
+  return typeof address.sessionId === 'string' && address.sessionId !== '' ? address.sessionId : undefined
+}
+
+/** Host services one dispatched viewer request reads. */
+export interface ViewerDispatchDeps {
+  /** Host services the reader was built with. */
+  readonly deps: ViewerReadDeps
+  /** Lifecycle state, refusal answers, and the resources a request opens. */
+  readonly lifecycle: ViewerLifecycle
+  /** Fork orchestration, which a fork call and the branch annotations go through. */
+  readonly fork: () => ViewerFork
+}
+
+/** The one entry a viewer reader exposes for forwarded requests. */
+export interface ViewerDispatch {
+  /**
+   * Answer one request for one share.
+   * @param shareId - Share the Relay addressed.
+   * @param request - Validated viewer request.
+   * @param actor - Viewer identity the Relay asserted.
+   * @param signal - Cancellation of the forwarded request.
+   * @returns The answer the Relay writes back to the viewer.
+   */
+  answer(shareId: string, request: ViewerRequest, actor: ShareRpcActor, signal?: AbortSignal): Promise<ViewerAnswer>
+  /**
+   * Dispatch one ordinary owner call for one admitted viewer.
+   * @param path - Owner endpoint path.
+   * @param body - Opaque request body.
+   * @param shareId - Share the request arrived through.
+   * @param actor - Viewer identity the Relay asserted.
+   * @param signal - Cancellation of the forwarded request.
+   * @returns The owner's own answer.
+   */
+  dispatchCall(
+    path: string,
+    body: unknown,
+    shareId: string,
+    actor: ShareRpcActor,
+    signal?: AbortSignal,
+  ): Promise<ViewerAnswer>
+}
+
+/**
+ * Build the request dispatch for one viewer reader.
+ * @param input - Host services, lifecycle state, and the fork orchestrator.
+ * @returns The reader's request entry and the plain owner-call dispatch a fork uses.
+ */
+export function createViewerDispatch(input: ViewerDispatchDeps): ViewerDispatch {
+  const deps = input.deps
+  const fork = input.fork
+  const lifecycle = input.lifecycle
+  const sessionOf = (shareId: string): string | undefined => deps.sharedSessionId(shareId)
+
+
+  const dispatch = async (
+    path: string,
+    body: unknown,
+    shareId: string,
+    actor: ShareRpcActor,
+    signal?: AbortSignal,
+  ): Promise<ViewerAnswer> => {
+    signal?.throwIfAborted()
+    const handler = deps.connection?.createSharedFetchHandler('/api')
+    const peer = lifecycle.peerFor(shareId, actor)
+    if (handler === undefined || peer === undefined) return { status: 503, body: { error: 'viewer-read-unavailable' } }
+    const response = await handler.fetch(new Request(`http://liveshare.internal${path}`, {
+      method: 'POST',
+      headers: { 'content-type': 'application/json' },
+      body: JSON.stringify(body),
+      ...(signal === undefined ? {} : { signal }),
+    }), peer)
+    const payload: unknown = await response.json().catch(() => undefined)
+    return { status: response.status, body: payload ?? { error: 'invalid-owner-response' } }
+  }
+
+  /**
+   * Answer one prompt or cancel a viewer sent to the share's own Session.
+   *
+   * Both travel the standard Gateway dispatch under the source-write role: the Gateway decides the call
+   * from the `share-viewer` policy and reaches the owner's own Session controller, so a cancel stops
+   * whatever turn that Session is running. The policy's write rule (share admission, drivable tier,
+   * confined layer) is read before dispatch and again after every await, because a mode change, a
+   * removal, or an expiry that lands while preparation or dispatch is in flight must refuse the request
+   * rather than be reported after it ran.
+   */
+  const answerSourceWrite = async (
+    shareId: string,
+    action: 'session/prompt' | 'session/cancel',
+    path: string,
+    body: unknown,
+    actor: ShareRpcActor,
+    signal?: AbortSignal,
+  ): Promise<ViewerAnswer> => {
+    const source = sessionOf(shareId)
+    if (source === undefined) return { status: 403, body: { error: 'share-not-found' } }
+    const refusedBefore = lifecycle.shareRefusal(shareId, actor)
+    if (refusedBefore !== undefined) return refusedBefore
+    const before = lifecycle.accessRefusal(shareId, actor, action, source, true)
+    // Driving the source Session runs the viewer's input against the owner's machine, so it happens only
+    // while the layer that confines that Session is installed and usable. A host whose backend cannot
+    // anchor the operations refuses the prompt instead of running it against the owner's own tools.
+    if (before !== undefined && before.reason !== 'source-write-unavailable') return before
+    if (before !== undefined) {
+      // A restarted host holds no layer for a Session whose agent is not live yet, and the layer is installed
+      // by the same setup every agent creation runs through. Preparing the source Session through the owner's
+      // own service is what makes that happen; the state is read back afterwards, and a host that still has
+      // no usable layer refuses rather than driving the Session unconstrained.
+      let prepared = false
+      try {
+        await deps.prepareSource?.(source)
+        prepared = deps.prepareSource !== undefined
+      } catch {
+        // An unsuccessful preparation changes nothing: the refusal below is the answer either way.
+      }
+      const refusedDuringPreparation = lifecycle.shareRefusal(shareId, actor)
+      if (refusedDuringPreparation !== undefined) return refusedDuringPreparation
+      const after = lifecycle.accessRefusal(shareId, actor, action, source, true)
+      if (after?.reason === 'source-write-unavailable') {
+        return {
+          status: 403,
+          body: {
+            error: 'source-write-unavailable',
+            message: 'this host could not confine the shared session, so it cannot drive it',
+            // Diagnostics only: whether this host asked its own service to prepare the Session. Neither
+            // field is a path or a credential.
+            prepared,
+            session: 'known',
+            ...(deps.sourceRefusal?.(shareId) === undefined
+              ? {}
+              : { reason: deps.sourceRefusal(shareId) }),
+          },
+        }
+      }
+      if (after !== undefined) return after
+    }
+    await lifecycle.refreshAdmission(shareId, signal)
+    const refusedAtDispatch = lifecycle.trustedState(shareId, actor, action, source)
+    if (refusedAtDispatch !== undefined) return refusedAtDispatch
+    const answer = await dispatch(path, body, shareId, actor, signal)
+    // Re-checked after the await: a share that stopped allowing writes while this ran must not be recorded
+    // as having served it.
+    const refusedAfterDispatch = lifecycle.shareRefusal(shareId, actor)
+    if (refusedAfterDispatch !== undefined) return refusedAfterDispatch
+    const after = lifecycle.accessRefusal(shareId, actor, action, source, true)
+    if (after?.reason === 'source-write-unavailable') {
+      return {
+        status: 403,
+        body: {
+          error: 'source-write-unavailable',
+          message: 'the shared session stopped being confined while this request ran',
+        },
+      }
+    }
+    return after ?? answer
+  }
+
+  /** Drive only the asserted viewer's fork of this share while its execution limit is installed. */
+  const answerChildWrite = async (
+    shareId: string,
+    endpoint: 'session/prompt' | 'session/cancel',
+    path: string,
+    body: unknown,
+    actor: ShareRpcActor,
+    signal?: AbortSignal,
+  ): Promise<ViewerAnswer> => {
+    // Driving a child is execution on the owner's machine, so the share state is read before anything else
+    // here: a revoked viewer, an elapsed deadline, and a stopped share are refused exactly as a read is,
+    // whether or not the named child would also have been refused.
+    const refusingShare = lifecycle.shareRefusal(shareId, actor)
+    if (refusingShare !== undefined) return refusingShare
+    const target = requestedSessionId(body)
+    if (target === undefined) return dispatch(path, body, shareId, actor, signal)
+    // The policy's snapshot rule decides before anything is resumed: the child is reachable through
+    // this share, belongs to this reader, is not revoked, and the share still allows forks to act.
+    const unattributed = lifecycle.accessRefusal(shareId, actor, endpoint, target, false)
+    if (unattributed !== undefined) return unattributed
+    if (endpoint === 'session/prompt') {
+      const decision = deps.forks?.allowsPrompt(target, actor)
+        ?? { ok: false as const, code: 'fork-ceiling-uninstalled' as const, message: 'this host has no fork registry' }
+      // The one refusal a cold child still deserves a chance at is a missing limit: preparing it is what
+      // installs that limit, before the agent is published.
+      const preparing = !decision.ok && decision.code === 'fork-ceiling-uninstalled' && deps.prepareChild !== undefined
+      const prepared = preparing ? await fork().prepareColdChild(target, actor, decision) : decision
+      const refusedAfterPreparation = lifecycle.shareRefusal(shareId, actor)
+      if (refusedAfterPreparation !== undefined) return refusedAfterPreparation
+      // Re-authorize after preparation: resuming the child must not carry a request that stopped being
+      // admissible while it ran.
+      const racing = lifecycle.accessRefusal(shareId, actor, endpoint, target, false)
+      if (racing !== undefined) return racing
+      if (!prepared.ok) {
+        console.warn(
+          `[liveshare] child write refused share=${shareId} child=${target}`
+          + ` endpoint=${path} code=${prepared.code} viewer=${actor.subjectId}`,
+        )
+        return { status: 403, body: { error: prepared.code, message: prepared.message } }
+      }
+    }
+    await lifecycle.refreshAdmission(shareId, signal)
+    const refusedAtDispatch = lifecycle.shareRefusal(shareId, actor)
+      ?? lifecycle.accessRefusal(shareId, actor, endpoint, target, true)
+    if (refusedAtDispatch !== undefined) return refusedAtDispatch
+    // A body carrying both `sessionId` and `address` names two Session identities, so the Gateway's
+    // Session resolver refuses it as invalid resources before the target operation runs. Prompt and
+    // cancel requests name their Session by `sessionId` alone.
+    return dispatch(path, body, shareId, actor, signal)
+  }
+
+  const answerCall = async (
+    shareId: string,
+    path: string,
+    body: unknown,
+    actor: ShareRpcActor,
+    signal?: AbortSignal,
+  ): Promise<ViewerAnswer> => {
+    // Classify and forward one normalized target, never the raw string: `/api/session/./fork` or a query
+    // suffix would otherwise skip the fork decision here and reach the owner's dispatch as an unrecorded
+    // fork. `URL.canParse` answers without throwing; an unparseable target keeps the caller's path, which
+    // matches no API endpoint, so it is forwarded exactly as received.
+    const parsed = URL.canParse(path, 'http://liveshare.invalid')
+      ? new URL(path, 'http://liveshare.invalid')
+      : undefined
+    const target = parsed === undefined ? path : `${parsed.pathname}${parsed.search}`
+    const endpoint = parsed !== undefined && parsed.pathname.startsWith('/api/')
+      ? parsed.pathname.slice('/api/'.length)
+      : ''
+    // Forking is decided here as well as by the policy: fork identity, replay, and the committed
+    // boundary need state a synchronous policy does not read.
+    if (endpoint === 'session/fork') return fork().answerFork(shareId, target, body, actor, signal)
+    if (endpoint === 'session/prompt' || endpoint === 'session/cancel') {
+      // A request naming the share's own source Session is decided by the source path whatever the mode,
+      // so its refusal names the share's rule rather than the fork registry's "not a fork of a share".
+      const source = sessionOf(shareId)
+      if (source !== undefined && requestedSessionId(body) === source) {
+        return answerSourceWrite(shareId, endpoint, target, body, actor, signal)
+      }
+      return answerChildWrite(shareId, endpoint, target, body, actor, signal)
+    }
+    if (sessionOf(shareId) === undefined) return { status: 404, body: { error: 'share-not-found' } }
+    // A share this host still holds is not the same as a share that may still serve: its deadline, a stop,
+    // and a grant that ended are decided here, before the owner's gateway reads anything for this viewer.
+    const refused = lifecycle.shareRefusal(shareId, actor)
+    if (refused !== undefined) return refused
+    const answer = await dispatch(target, body, shareId, actor, signal)
+    // A Peer disposed while the call ran is refused by the Gateway; the share's own refusal names why.
+    const refusedAfter = lifecycle.shareRefusal(shareId, actor)
+    if (refusedAfter !== undefined) return refusedAfter
+    if (endpoint === 'session/list') return fork().annotateSessionList(answer, shareId, actor)
+    // A branch page states its own branch facts: the projection value a page learned from the session
+    // list is replaced by this Session's own baseline when the page opens it.
+    const requested = endpoint === 'session/page' ? requestedAddressSession(body) : undefined
+    const lineage = requested === undefined ? undefined : fork().lineageFor(shareId, requested, actor)
+    return lineage === undefined ? answer : fork().withLineageAnswer(answer, lineage)
+  }
+
+  const answerStreamOpen = async (
+    shareId: string,
+    id: number,
+    endpoint: string,
+    payload: unknown,
+    actor: ShareRpcActor,
+    signal?: AbortSignal,
+  ): Promise<ViewerAnswer> => {
+    if (sessionOf(shareId) === undefined) return { status: 404, body: { error: 'share-not-found' } }
+    // Refused before the opener runs, so a share that may not serve this viewer costs no upstream
+    // subscription — and a stream that can never be read is never opened in the first place.
+    const refused = lifecycle.shareRefusal(shareId, actor)
+    if (refused !== undefined) return refused
+    if (deps.gateway === undefined) return { status: 503, body: { error: 'viewer-read-unavailable' } }
+    // Stream ids are the opening page's own numbering, so a live stream under this key means two
+    // pages numbered a stream identically: the older one loses its stream to this open.
+    const replaced = lifecycle.streamOf(shareId, id)
+    if (replaced !== undefined) {
+      if (!sameActor(replaced.actor, actor)) return viewerReadOnlyAnswer(endpoint)
+      console.warn(
+        `[liveshare] viewer stream replaced share=${shareId} streamId=${String(id)}`
+        + ` endpoint=${endpoint} hadPending=${String(replaced.pending !== undefined)}`
+        + ' — two viewer pages numbered their streams identically, or the page re-opened this id',
+      )
+    }
+    const reserved = lifecycle.openingOf(shareId, id)
+    if (reserved !== undefined && !sameActor(reserved.actor, actor)) return viewerReadOnlyAnswer(endpoint)
+    const peer = lifecycle.peerFor(shareId, actor)
+    if (peer === undefined) return { status: 503, body: { error: 'viewer-read-unavailable' } }
+    lifecycle.release(shareId, id)
+    const controller = new AbortController()
+    const reservation = { shareId, actor, controller }
+    lifecycle.reserveOpening(shareId, id, reservation)
+    const cancelled = (): void => { controller.abort(signal?.reason) }
+    signal?.addEventListener('abort', cancelled, { once: true })
+    const values = await deps.gateway.wireStream.open(
+      endpoint,
+      payload,
+      emptyViewerUplink(),
+      peer,
+      controller.signal,
+    ).catch((error: unknown) => error)
+    signal?.removeEventListener('abort', cancelled)
+    lifecycle.releaseOpening(shareId, id, reservation)
+    const refusedAfterOpen = lifecycle.shareRefusal(shareId, actor)
+    if (refusedAfterOpen !== undefined) controller.abort()
+    if (controller.signal.aborted) {
+      if (isAsyncIterable(values)) void values[Symbol.asyncIterator]().return?.().catch(() => undefined)
+      // Only the caller's abort or this share's own refusal aborts this controller; the caller's
+      // abort wins when both happened, as it did before either answer was built.
+      signal?.throwIfAborted()
+      if (refusedAfterOpen !== undefined) return refusedAfterOpen
+    }
+    if (!isAsyncIterable(values)) {
+      // A stream that never opened is a failure the viewer sees as a Remote failure, so its cause is
+      // named here rather than only at the page.
+      console.warn(
+        `[liveshare] viewer stream open failed share=${shareId} streamId=${String(id)} endpoint=${endpoint}`
+        + ` cause=${describeViewerStreamCause(values)}`,
+      )
+      return { status: 200, body: { failure: deps.gateway.wireStream.failure(values) } }
+    }
+    if (viewerReadDebugEnabled()) {
+      console.log(`[liveshare] viewer stream open share=${shareId} streamId=${String(id)} endpoint=${endpoint}`)
+    }
+    const requested = endpoint === 'session/follow' ? requestedAddressSession(payload) : undefined
+    lifecycle.registerStream({
+      shareId,
+      id,
+      actor,
+      endpoint,
+      controller,
+      // Every projection block a reader receives states the same branch facts its session list carried.
+      iterator: endpoint === 'session/follow' || endpoint === 'session/control'
+        ? fork().withLineageFrames(
+          values,
+          endpoint,
+          requested,
+          target => fork().lineageFor(shareId, target, actor),
+        )
+        : values[Symbol.asyncIterator](),
+      pending: undefined,
+      lastPolledAt: Date.now(),
+    })
+    return { status: 200, body: { opened: true } }
+  }
+
+  const answerStreamNext = async (
+    shareId: string,
+    id: number,
+    actor: ShareRpcActor,
+    signal?: AbortSignal,
+  ): Promise<ViewerAnswer> => {
+    const stream = lifecycle.streamOf(shareId, id)
+    if (stream === undefined || deps.gateway === undefined) {
+      // The carrier signal a page uses to know it must re-open rather than poll this id forever.
+      if (viewerReadDebugEnabled()) {
+        console.log(`[liveshare] viewer stream missing share=${shareId} streamId=${String(id)}`)
+      }
+      return { status: 404, body: { error: 'stream-not-found' } }
+    }
+    // A poll belongs to the opening identity, and both identity and share admission must still hold.
+    if (!sameActor(stream.actor, actor)) return viewerReadOnlyAnswer('stream-next')
+    const refused = lifecycle.shareRefusal(shareId, actor)
+    if (refused !== undefined) {
+      lifecycle.release(shareId, id)
+      return refused
+    }
+    stream.lastPolledAt = Date.now()
+    signal?.throwIfAborted()
+    const gateway = deps.gateway
+    const startedAt = Date.now()
+    const pending = stream.pending ?? stream.iterator.next()
+    stream.pending = pending
+    const held = await pollStream(pending, STREAM_POLL_HOLD_MS,
+      signal === undefined ? stream.controller.signal : AbortSignal.any([signal, stream.controller.signal]))
+    // This poll answers within its hold by construction, so an answer later than the hold means this
+    // host was the slow hop for the viewer's read and names the lag here instead of at the browser.
+    const elapsedMs = Date.now() - startedAt
+    if (elapsedMs > STREAM_POLL_HOLD_MS + STREAM_POLL_SLACK_MS) {
+      console.warn(
+        `[liveshare] viewer stream poll late share=${shareId} id=${String(id)} elapsedMs=${String(elapsedMs)}`
+        + ` holdMs=${String(STREAM_POLL_HOLD_MS)} outcome=${held.kind}`,
+      )
+    }
+    const refusedAfterPoll = lifecycle.shareRefusal(shareId, actor)
+    if (refusedAfterPoll !== undefined || !lifecycle.streamIsCurrent(shareId, id, stream)) {
+      return refusedAfterPoll ?? { status: 404, body: { error: 'stream-not-found' } }
+    }
+    if (held.kind === 'pending') return { status: 200, body: { pending: true } }
+    stream.pending = undefined
+    if (held.kind === 'failure') {
+      // This is the owner-side half of what the viewer reports as a Remote failure, so the cause is
+      // logged with the stream it ends; it is also the reason the page cannot recover this id.
+      console.warn(
+        `[liveshare] viewer stream failed share=${shareId} streamId=${String(id)}`
+        + ` elapsedMs=${String(Date.now() - startedAt)} cause=${describeViewerStreamCause(held.error)}`,
+      )
+      lifecycle.release(shareId, id)
+      return { status: 200, body: { failure: gateway.wireStream.failure(held.error) } }
+    }
+    if (held.result.done === true) {
+      lifecycle.release(shareId, id)
+      return { status: 200, body: { end: true } }
+    }
+    // The value that ended the wait answers together with whatever the stream queued behind it: one
+    // response costs one round trip to the page, so a burst that is already producing would pay one
+    // trip per value. A pull still unanswered when the batch bounds run out stays this stream's
+    // pending pull, exactly as an unanswered first pull does.
+    stream.pending = undefined
+    const values = await drainStream(stream, held.result.value)
+    const refusedAfterDrain = lifecycle.shareRefusal(shareId, actor)
+    if (refusedAfterDrain !== undefined || !lifecycle.streamIsCurrent(shareId, id, stream)) {
+      return refusedAfterDrain ?? { status: 404, body: { error: 'stream-not-found' } }
+    }
+    return { status: 200, body: { values } }
+  }
+
+  /**
+   * Collect the values one answer carries: the first value plus what the stream already queued.
+   * @param stream - Open stream the poll belongs to.
+   * @param first - Value that ended the poll's wait.
+   * @returns The bounded, in-order batch.
+   */
+  const drainStream = async (stream: OpenStream, first: unknown): Promise<readonly unknown[]> => {
+    const batch: unknown[] = [first]
+    while (batch.length < STREAM_BATCH_MAX) {
+      const pending = stream.iterator.next()
+      stream.pending = pending
+      const raced = await pollStream(pending, STREAM_BATCH_WINDOW_MS, stream.controller.signal)
+      // Anything other than another value ends the batch here; `stream.pending` keeps it, so the next
+      // poll answers with the failure, the end, or the hold that this pull is still waiting for.
+      if (raced.kind !== 'value' || raced.result.done === true) return batch
+      stream.pending = undefined
+      batch.push(raced.result.value)
+    }
+    return batch
+  }
+
+  async function answer(
+    shareId: string,
+    request: ViewerRequest,
+    actor: ShareRpcActor,
+    signal?: AbortSignal,
+  ): Promise<ViewerAnswer> {
+    signal?.throwIfAborted()
+    const callerSignal = signal
+    const polledStream = request.op === 'stream-next' ? lifecycle.streamOf(shareId, request.id) : undefined
+    const controller = request.op === 'call' ? new AbortController() : undefined
+    if (controller !== undefined) {
+      signal = signal === undefined ? controller.signal : AbortSignal.any([signal, controller.signal])
+    }
+    const call = controller === undefined || signal === undefined ? undefined
+      : lifecycle.beginCall(shareId, actor, controller, signal)
+    const abortStream = (): void => {
+      if (request.op === 'call' || request.op === 'asset') return
+      const stream = lifecycle.streamOf(shareId, request.id) ?? lifecycle.openingOf(shareId, request.id)
+      if (stream !== undefined && sameActor(stream.actor, actor)) lifecycle.release(shareId, request.id)
+    }
+    signal?.addEventListener('abort', abortStream, { once: true })
+    const answer = await (async (): Promise<ViewerAnswer> => {
+      // A reader asking for its page or opening a stream is about to receive its own access snapshot:
+      // ask for this share's source to be prepared first (see `prepareSourceForReader`). It is
+      // asked before the refresh so a share whose Relay mode cannot be read still names that state, and
+      // the installation re-pushes the snapshot the page follows, so nothing here has to wait for it.
+      // Both requests are one per page load, so no poll drives this.
+      if (request.op === 'asset' || request.op === 'stream-open') deps.prepareSourceForReader?.(shareId)
+      await lifecycle.refreshAdmission(shareId, signal)
+      callerSignal?.throwIfAborted()
+      if (polledStream !== undefined && sameActor(polledStream.actor, actor)) {
+        const refused = lifecycle.shareRefusal(shareId, actor)
+        if (refused !== undefined) {
+          if (request.op === 'stream-next' && lifecycle.streamOf(shareId, request.id) === polledStream) {
+            lifecycle.release(shareId, request.id)
+          }
+          return refused
+        }
+      }
+      switch (request.op) {
+        case 'call': {
+          if (deps.debug === true) console.log(`[liveshare] viewer read share=${shareId} path=${request.path}`)
+          return answerCall(shareId, request.path, request.body, actor, signal)
+        }
+        case 'stream-open': {
+          if (deps.debug === true) console.log(`[liveshare] viewer stream open share=${shareId} endpoint=${request.endpoint}`)
+          return answerStreamOpen(shareId, request.id, request.endpoint, request.payload, actor, signal)
+        }
+        case 'stream-next':
+          return answerStreamNext(shareId, request.id, actor, signal)
+        case 'asset': {
+          const refused = lifecycle.shareRefusal(shareId, actor)
+          if (refused !== undefined) return refused
+          if (!isViewerAssetPath(request.path)) return { status: 404, body: { error: 'asset-not-found' } }
+          if (deps.readAsset === undefined) return { status: 503, body: { error: 'viewer-page-unavailable' } }
+          const startedAt = Date.now()
+          const peer = lifecycle.peerFor(shareId, actor)
+          if (peer === undefined) return { status: 503, body: { error: 'viewer-page-unavailable' } }
+          const read = await deps.readAsset(request.path, peer)
+          // Only the document itself loses its manifest link; the Owner's own page reads the same bytes
+          // from the static reader and keeps it.
+          const served = request.path === '' ? withoutManifestLink(read) : read
+          if (deps.debug === true && served.status === 200) {
+            console.log(
+              `[liveshare] viewer asset share=${shareId} path=${request.path}`
+                + ` bytes=${String(assetBodyBytes(served.body))} ms=${String(Date.now() - startedAt)}`,
+            )
+          }
+          return served
+        }
+        case 'stream-cancel':
+          const held = lifecycle.streamOf(shareId, request.id) ?? lifecycle.openingOf(shareId, request.id)
+          if (held !== undefined && !sameActor(held.actor, actor)) {
+            return viewerReadOnlyAnswer('stream-cancel')
+          }
+          if (viewerReadDebugEnabled()) {
+            console.log(`[liveshare] viewer stream cancel share=${shareId} streamId=${String(request.id)}`)
+          }
+          lifecycle.release(shareId, request.id)
+          return { status: 200, body: { cancelled: true } }
+        default:
+          return assertNever(request)
+      }
+    })().finally(() => {
+      signal?.removeEventListener('abort', abortStream)
+      if (call !== undefined) lifecycle.endCall(call)
+    })
+    signal?.throwIfAborted()
+    if (deps.debug === true && answer.status !== 200) {
+      console.log(
+        `[liveshare] viewer read refused share=${shareId} op=${request.op}`
+          + ` target=${request.op === 'call' || request.op === 'asset' ? request.path : request.op === 'stream-open' ? request.endpoint : String(request.id)}`
+          + ` status=${String(answer.status)}`,
+      )
+    }
+    return answer
+  }
+
+
+  return {
+    answer,
+    dispatchCall: dispatch,
+  }
+}
+
+/**
+ * Uplink of one read-only viewer stream.
+ *
+ * The viewer channel is request/poll only, so the page sends no Client-to-Host item inside an open
+ * stream and this direction is empty by construction. It is still supplied because the gateway's
+ * opener takes the position, and a fresh iterator per open keeps one stream's end from becoming
+ * another's.
+ * @returns An async iterable that yields nothing.
+ */
+function emptyViewerUplink(): AsyncIterable<unknown> {
+  return (async function* () {})()
+}
+
+
+/** Wait for one owned pull, bounded by time or cancellation, and always release its timer. */
+async function pollStream(
+  pending: Promise<IteratorResult<unknown>>, ms: number, signal?: AbortSignal,
+): Promise<
+  | { kind: 'value'; result: IteratorResult<unknown> }
+  | { kind: 'failure'; error: unknown }
+  | { kind: 'pending' }
+> {
+  signal?.throwIfAborted()
+  let timer: ReturnType<typeof setTimeout> | undefined
+  let abort!: () => void
+  const stop = new Promise<{ kind: 'pending' }>((resolve, reject) => {
+    timer = setTimeout(() => { resolve({ kind: 'pending' }) }, ms)
+    abort = () => { reject(new Error('Viewer request cancelled', { cause: signal?.reason })) }
+    signal?.addEventListener('abort', abort, { once: true })
+  })
+  try {
+    return await Promise.race([
+      pending.then(result => ({ kind: 'value' as const, result }), (error: unknown) => ({ kind: 'failure' as const, error })),
+      stop,
+    ])
+  } finally {
+    clearTimeout(timer)
+    signal?.removeEventListener('abort', abort)
+  }
+}
+
+
+/**
+ * Exact top-level files of the owner's served page the owner answers.
+ *
+ * The owner's index references these against the document base rather than inside `assets/`, so the page
+ * requests them by exact name. The Relay admits the same three names and forwards their reads, so both
+ * halves of the channel hold one list: admitting them makes no other top-level file readable.
+ */
+const VIEWER_TOP_LEVEL_FILES: readonly string[] = ['manifest.webmanifest', 'favicon.svg', 'favicon-dark.svg']
+
+/**
+ * Whether one page-relative path names a resource of the served page: the index, a shell asset, a client
+ * plugin bundle, or one of {@link VIEWER_TOP_LEVEL_FILES}. The resource readers reject traversal and
+ * unknown bundles themselves.
+ * @param path - Page-relative path the viewer asked for, including any query.
+ * @returns True for a path the owner may answer.
+ */
+function isViewerAssetPath(path: string): boolean {
+  // A source map is not a page resource: serving one would hand a viewer the Owner's original sources.
+  // This gate is authoritative for both a page-resource read and an `asset` op forwarded through the
+  // Relay, which forwards both as this same parse: neither the request line nor the body is read there.
+  if (namesSourceMap(path)) return false
+  if (path === '' || path === 'index.html' || path.startsWith('assets/') || path.startsWith('plugins/')) return true
+  // A top-level file carries no directory, so only the part before any query is compared: a prefix match
+  // would admit a sibling such as `favicon.svg.map`.
+  const pathname = path.split('?')[0] as string
+  return VIEWER_TOP_LEVEL_FILES.some(name => pathname === name)
+}
+
+/** A `.map` extension that ends one file name, before the `&` flags a plugin bundle key may carry. */
+const SOURCE_MAP_EXTENSION = /\.map(?:[?&]|$)/u
+
+/**
+ * Whether one asset path names a source map.
+ *
+ * The extension must end the file name, so a bundle key such as `plugins/??a,b/x.js.map&rev=1` counts
+ * while `index-abc.js` and `client.css` do not. The percent-decoded form is read too, because the
+ * resource readers decode before they resolve a file: `assets/x.js%2Emap` names the same map.
+ * @param path - Page-relative path the viewer asked for.
+ * @returns True when the path names a source map.
+ */
+function namesSourceMap(path: string): boolean {
+  if (SOURCE_MAP_EXTENSION.test(path)) return true
+  try {
+    return SOURCE_MAP_EXTENSION.test(decodeURIComponent(path))
+  } catch {
+    // A malformed escape names no file either reader resolves, so the requested text alone decides.
+    return false
+  }
+}
+
+/**
+ * Drop the document's manifest link from one served viewer document.
+ *
+ * A browser fetches a manifest without credentials, so the Relay cannot resolve the share from that
+ * request and answers its own 404 — no function is lost, but every viewer page load would carry that
+ * noise. The whole line goes, and every other byte of the document is preserved.
+ * @param answer - Owner answer for the document read.
+ * @returns The same answer without the manifest link line, or unchanged when it carries no asset body.
+ */
+function withoutManifestLink(answer: ViewerAnswer): ViewerAnswer {
+  if (answer.status !== 200 || !isViewerAssetBody(answer.body)) return answer
+  const html = Buffer.from(answer.body.base64, 'base64').toString('utf8')
+  const stripped = html.split('\n').filter(line => !line.includes('rel="manifest"')).join('\n')
+  if (stripped === html) return answer
+  return {
+    status: 200,
+    body: { contentType: answer.body.contentType, base64: Buffer.from(stripped, 'utf8').toString('base64') },
+  }
+}
+
+/**
+ * Whether one owner answer body carries a decoded page resource.
+ * @param body - Owner answer body.
+ * @returns True when it holds the content type and base64 bytes of one resource.
+ */
+function isViewerAssetBody(body: unknown): body is ViewerAssetBody {
+  return isRecord(body) && typeof body.contentType === 'string' && typeof body.base64 === 'string'
+}
+
+/** Whether per-request viewer-read lines are recorded; anomalies log regardless. */
+function viewerReadDebugEnabled(): boolean {
+  return process.env.LIVESHARE_DEBUG_READS === '1'
+}
+
+/**
+ * Describe one stream cause for a log without carrying payload or credentials.
+ * @param cause Thrown value or failure object a stream ended with.
+ * @returns Name, message, and abort state when the value has them.
+ */
+function describeViewerStreamCause(cause: unknown): string {
+  if (cause instanceof Error) {
+    return `${cause.name}: ${cause.message}${cause.name === 'AbortError' ? ' (aborted)' : ''}`
+  }
+  if (typeof cause === 'object' && cause !== null) {
+    const value = cause as { readonly code?: unknown; readonly message?: unknown }
+    const code = typeof value.code === 'string' ? value.code : 'object'
+    const message = typeof value.message === 'string' ? `: ${value.message}` : ''
+    return `${code}${message}`
+  }
+  return typeof cause
+}
+
+function isAsyncIterable(value: unknown): value is AsyncIterable<unknown> {
+  return typeof value === 'object' && value !== null && Symbol.asyncIterator in value
+}
+
+/**
+ * Decoded byte count of one served page resource, measured from its base64 body.
+ * @param body - Owner answer body of a status-200 asset read.
+ * @returns The resource's byte count, or undefined when the body carries no base64 payload.
+ */
+function assetBodyBytes(body: unknown): number | undefined {
+  if (!isRecord(body)) return undefined
+  const base64 = body.base64
+  if (typeof base64 !== 'string') return undefined
+  const padding = base64.endsWith('==') ? 2 : base64.endsWith('=') ? 1 : 0
+  return Math.floor(base64.length * 3 / 4) - padding
+}
+
+function assertNever(value: never): never {
+  throw new Error(`liveshare: unhandled viewer request ${JSON.stringify(value)}`)
+}
diff --git a/packages/experimental/liveshare/src/host/viewer-fork.ts b/packages/experimental/liveshare/src/host/viewer-fork.ts
new file mode 100644
index 0000000000..1606a816e8
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/viewer-fork.ts
@@ -0,0 +1,590 @@
+/**
+ * Fork orchestration for one viewer: ceiling decisions, child preparation, replay, and branch facts.
+ *
+ * The owner's own fork runs unchanged through the Gateway; this module decides whether it may run at
+ * all, records the child the owner created under the logical request so a retry after that record
+ * replays it, and records the child before anything can prompt it. Branch facts the reader was given
+ * are added to list and projection answers here.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/viewer-fork
+ */
+
+import { FORK_LINEAGE_KEY, forkLineageValue, type ForkLineage } from '../fork-lineage.ts'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { viewerRequestTarget, type ViewerAnswer } from '../viewer-channel.ts'
+import type { ForkPromptDecision, ForkRegistry } from './fork-registry.ts'
+import { decideFork, type ForkRequest } from './fork-policy.ts'
+import type { ViewerReadDeps } from './viewer-read.ts'
+import type { ViewerLifecycle } from './viewer-lifecycle.ts'
+import {
+  requestedBoundary,
+  requestedOperationId,
+  requestedRpcId,
+  requestedSessionId,
+  type ViewerDispatch,
+} from './viewer-dispatch.ts'
+import { isRecord } from './wire-json.ts'
+
+/** Host services and orchestration one fork request reads. */
+export interface ViewerForkDeps {
+  /** Host services the reader was built with. */
+  readonly deps: ViewerReadDeps
+  /** Lifecycle refusal answers and the enforcement records a child holds. */
+  readonly lifecycle: ViewerLifecycle
+  /** The request dispatch the owner's own fork is made through. */
+  readonly dispatch: () => ViewerDispatch
+}
+
+/** Fork orchestration one viewer reader exposes. */
+export interface ViewerFork {
+  /**
+   * Answer one fork request from a viewer.
+   * @param shareId - Share the request arrived through.
+   * @param path - Owner endpoint path to dispatch the fork to.
+   * @param body - Opaque fork body the viewer sent.
+   * @param actor - Viewer identity the Relay asserted.
+   * @param signal - Cancellation of the forwarded request.
+   * @returns The owner's own fork answer, or a named refusal.
+   */
+  answerFork(
+    shareId: string,
+    path: string,
+    body: unknown,
+    actor: ShareRpcActor,
+    signal?: AbortSignal,
+  ): Promise<ViewerAnswer>
+  /**
+   * Activate one cold child through the composition, then decide again.
+   * @param childSessionId - Child to prepare.
+   * @param viewer - Identity the Relay asserted.
+   * @param previous - Decision the registry gave before preparation.
+   * @returns The decision after the activation.
+   */
+  prepareColdChild(childSessionId: string, viewer: ShareRpcActor, previous: ForkPromptDecision): Promise<ForkPromptDecision>
+  /**
+   * Add the branch facts this reader was given to its own forks in one `session/list` answer.
+   * @param answer - Owner's own `session/list` answer.
+   * @param shareId - Share the request arrived through.
+   * @param actor - Viewer identity the Relay asserted.
+   * @returns The answer, with this reader's forks annotated for its sidebar.
+   */
+  annotateSessionList(answer: ViewerAnswer, shareId: string, actor: ShareRpcActor): ViewerAnswer
+  /**
+   * Branch facts one reader was given for one Session, or undefined when it is not that reader's branch.
+   * @param shareId - Share the read arrived through.
+   * @param sessionId - Session the read names.
+   * @param actor - Viewer identity the Relay asserted.
+   * @returns The branch facts to publish, or undefined.
+   */
+  lineageFor(shareId: string, sessionId: string, actor: ShareRpcActor): ForkLineage | undefined
+  /**
+   * One owner answer with the branch facts added to its page's projection block.
+   * @param answer - The owner gateway's own answer.
+   * @param lineage - Branch facts for the Session that answer describes.
+   * @returns The answer, with the facts added to its projections.
+   */
+  withLineageAnswer(answer: ViewerAnswer, lineage: ForkLineage): ViewerAnswer
+  /**
+   * Add the branch facts this reader was given wherever a relayed stream carries a projection block.
+   * @param values - Frames the owner gateway streams for one endpoint.
+   * @param endpoint - Stream endpoint being relayed.
+   * @param requested - Session the stream was opened for, when its open item named one.
+   * @returns The same frames, with the facts added to their projection blocks.
+   */
+  withLineageFrames(
+    values: AsyncIterable<unknown>,
+    endpoint: string,
+    requested: string | undefined,
+    lineageOf: (sessionId: string) => ForkLineage | undefined,
+  ): AsyncGenerator
+}
+
+/**
+ * Build the fork orchestration for one viewer reader.
+ * @param input - Host services, lifecycle state, and the request dispatch.
+ * @returns Fork orchestration and branch annotations.
+ */
+export function createViewerFork(input: ViewerForkDeps): ViewerFork {
+  const deps = input.deps
+  const lifecycle = input.lifecycle
+  const dispatch = input.dispatch
+  /** Fork requests being served right now, so concurrent retries of one intent create one child. */
+  const inFlight = new Map<string, { readonly boundary: number; readonly answer: Promise<ViewerAnswer> }>()
+
+  /**
+   * Activate one cold child through the composition, then decide again.
+   *
+   * An activation that fails is reported as its own refusal: reporting the generic missing-limit code
+   * would hide a Session that was never brought up, which is the failure this path exists to avoid.
+   */
+  const prepareColdChild = async (
+    childSessionId: string,
+    viewer: ShareRpcActor,
+    previous: ForkPromptDecision,
+  ): Promise<ForkPromptDecision> => {
+    try {
+      await deps.prepareChild?.(childSessionId)
+    } catch (error: unknown) {
+      return {
+        ok: false,
+        code: 'fork-prepare-failed',
+        message: `preparing this fork failed: ${error instanceof Error ? error.message : String(error)}`,
+      }
+    }
+    return deps.forks?.allowsPrompt(childSessionId, viewer) ?? previous
+  }
+
+  /**
+   * Answer one fork request from a viewer.
+   *
+   * The upstream fork runs unchanged; this decides whether it may run at all, and records the child
+   * so the viewer can see it and the source owner can revoke it later. The request key is derived
+   * rather than minted, so a retried creation resolves to the boundary the caller asked for instead
+   * of producing a second child.
+   * @param shareId Share the request arrived through.
+   * @param path Owner endpoint path to dispatch the fork to.
+   * @param body Opaque fork body the viewer sent.
+   * @param actor Viewer identity the Relay asserted.
+   * @returns The owner's own fork answer, or a named refusal.
+   */
+  const answerFork = async (
+    shareId: string,
+    path: string,
+    body: unknown,
+    actor: ShareRpcActor,
+    signal?: AbortSignal,
+  ): Promise<ViewerAnswer> => {
+    const share = deps.forkStateOf?.(shareId)
+    if (share === undefined) return { status: 404, body: { error: 'share-not-found' } }
+    // Forking is the one write a viewer performs, so the share state is read here exactly as a read
+    // endpoint reads it: a viewer whose grant ended, a share past its deadline, and a stopped share are
+    // refused before a child could ever be created for them.
+    const refusingShare = lifecycle.shareRefusal(shareId, actor)
+    if (refusingShare !== undefined) return refusingShare
+    const sourceSessionId = requestedSessionId(body)
+    // A fork has to name the Session it branches from, and this host decides the request before the
+    // owner's Gateway sees it: a body naming none is refused here instead of reaching the owner.
+    if (sourceSessionId === undefined) {
+      return {
+        status: 400,
+        body: { error: 'fork-session-required', message: 'a fork request must name the session it branches from' },
+      }
+    }
+    const atSeq = requestedBoundary(body)
+    const request: ForkRequest = {
+      shareId,
+      sourceSessionId,
+      ...(atSeq === undefined ? {} : { atSeq }),
+      requestKey: forkRequestKey(shareId, actor, sourceSessionId, atSeq),
+    }
+    const decision = decideFork(share, request, Date.now())
+    if (!decision.ok) {
+      console.warn(
+        `[liveshare] fork refused share=${shareId} code=${decision.code}`
+        + ` source=${sourceSessionId} viewer=${actor.subjectId}`,
+      )
+      return { status: 403, body: { error: decision.code, message: decision.message } }
+    }
+    // The admission above ran first, so a served operation is only replayed for a caller that is still
+    // admitted to a live share: the identity never stands in for the authorization.
+    const identity = forkOperationIdentity(shareId, actor, sourceSessionId, requestedOperationId(body))
+    // A child identity is honoured only under a bound operation identity: without rpcId or operationId
+    // the host cannot prove the retry is the request that created it, so a body naming a child is
+    // refused instead of being forwarded as a field the owner's request type cannot carry.
+    if (identity === undefined && namesForkChildSessionId(body)) {
+      return {
+        status: 403,
+        body: { error: 'fork-identity-required', message: 'naming a fork child requires an rpcId or operationId' },
+      }
+    }
+    if (identity !== undefined) {
+      // The request in flight wins over a recorded one: a retry that arrives while the first is still
+      // enforcing its child must wait for that same outcome, not read a half-finished success.
+      const pending = inFlight.get(identity)
+      if (pending !== undefined) {
+        if (pending.boundary !== decision.boundary) return forkOperationConflict()
+        // The answer belongs to the request that started the fork; this caller is waiting on it with an
+        // id of its own, so it is re-correlated exactly like a recorded replay.
+        const answer = await pending.answer
+        return { status: answer.status, body: correlateForkAnswer(answer.body, requestedRpcId(body)) }
+      }
+      const settled = deps.forks?.operationOf(identity)
+      if (settled !== undefined) {
+        // A retry repeats the request it already made; the same identity naming a different boundary is
+        // a different intent that must not silently receive the earlier child.
+        if (settled.boundary !== decision.boundary) return forkOperationConflict()
+        // An interrupted request that never created a child is not a replay: it creates now.
+        if (settled.childSessionId !== '') {
+          // A child whose readiness was never confirmed is refused by name, never replayed as a success,
+          // and never replaced by a second child — including a record written before readiness existed.
+          return settled.ready
+            // The recorded answer describes the child; its correlation id belongs to the request that
+            // produced it, so the replay carries THIS request's id or a Connection client reads it as a
+            // mismatch against the call it is waiting on.
+            ? { status: settled.status, body: correlateForkAnswer(settled.body, requestedRpcId(body)) }
+            : forkEnforcementFailed(settled.childSessionId)
+        }
+      }
+      // Bind this identity to its boundary before anything is created: a request naming another boundary
+      // then conflicts even if this process dies before it records the child. The reservation is awaited
+      // inside `create` rather than here, so a concurrent retry still meets the in-flight entry below
+      // instead of starting a second fork while the reservation reaches the disk.
+    }
+    const create = async (): Promise<ViewerAnswer> => {
+      if (identity !== undefined) await deps.forks?.reserveOperation(identity, decision.boundary)
+      // The owner's `SessionForkRequest` mints the child id itself, so the request body is forwarded
+      // unchanged: a retry is made idempotent by the operation this host reserves and records, not by a
+      // child id it could inject into a request type that has no such field.
+      const answer = await dispatch().dispatchCall(path, body, shareId, actor, signal)
+      const childSessionId = forkedSessionId(answer)
+      if (childSessionId !== undefined) {
+        await deps.forks?.record({
+          childSessionId,
+          shareId,
+          sourceSessionId,
+          boundary: decision.boundary,
+          creator: { providerId: actor.providerId, tenantId: actor.tenantId, subjectId: actor.subjectId },
+          createdAt: new Date().toISOString(),
+        })
+        deps.accessChanged?.()
+        // Register the child's limit before anything can prompt it: the installation writes the record
+        // the prompt gate reads, so a child whose guard could not be registered stays refused.
+        let installed: (() => void) | undefined
+        try {
+          // A write-mode share's child is installed with the bounded write; every other child, and any
+          // child whose share mode this host cannot establish, keeps the read-only ceiling.
+          installed = await deps.enforceChild?.(childSessionId, { write: share.sessionMode === 'write' })
+        } catch (error: unknown) {
+          // The child exists in the owner's log whatever happens here, so the failure is reported and
+          // recorded rather than swallowed; a prompt still refuses because no limit was installed.
+          console.warn(
+            `[liveshare] fork limits failed share=${shareId} child=${childSessionId}`
+            + ` viewer=${actor.subjectId} error=${error instanceof Error ? error.message : String(error)}`,
+          )
+        }
+        if (installed !== undefined) lifecycle.holdEnforcement(childSessionId, installed)
+        const ready = installed !== undefined
+        // The operation is recorded either way — the child exists, and a retry must not fork a second
+        // one — but a record that could not be enforced never answers as a success.
+        if (identity !== undefined) {
+          await deps.forks?.recordOperation({
+            key: identity,
+            childSessionId,
+            boundary: decision.boundary,
+            ready,
+            status: ready ? answer.status : 503,
+            body: ready ? answer.body : forkEnforcementFailed(childSessionId).body,
+          })
+        }
+        if (!ready) return forkEnforcementFailed(childSessionId)
+        console.log(
+          `[liveshare] fork created share=${shareId} child=${childSessionId}`
+          + ` boundary=${String(decision.boundary)} viewer=${actor.subjectId}`,
+        )
+      }
+      return answer
+    }
+    if (identity === undefined) return create()
+    const started = create()
+    inFlight.set(identity, { boundary: decision.boundary, answer: started })
+    try {
+      return await started
+    } finally {
+      inFlight.delete(identity)
+    }
+  }
+
+
+  /**
+ * Stable key for one fork attempt, so a retry lands on the same boundary instead of a new child.
+ * @param shareId Share the fork came through.
+ * @param actor Viewer identity the Relay asserted.
+ * @param sourceSessionId Session being forked.
+ * @param atSeq Boundary the caller asked for, when it asked for one.
+ * @returns Key unique to that viewer, share, session, and boundary.
+ */
+  function forkRequestKey(
+    shareId: string,
+    actor: ShareRpcActor,
+    sourceSessionId: string,
+    atSeq: number | undefined,
+  ): string {
+    return [
+      shareId,
+      actor.providerId,
+      actor.tenantId,
+      actor.subjectId,
+      sourceSessionId,
+      atSeq === undefined ? 'end' : String(atSeq),
+    ].join('\u0000')
+  }
+
+  /**
+ * Whether one fork envelope names a child identity itself.
+ *
+ * The current `SessionForkRequest` has no child identity field, so nothing this host injects could be
+ * honoured; a body that names one anyway is refused unless it carries the operation identity a replay
+ * needs, instead of being forwarded as if the owner would adopt that child.
+ * @param envelope - Opaque fork body the viewer sent.
+ * @returns True when the request record names a non-empty `childSessionId`.
+ */
+  function namesForkChildSessionId(envelope: unknown): boolean {
+    const childSessionId = viewerRequestTarget(envelope)?.childSessionId
+    return typeof childSessionId === 'string' && childSessionId !== ''
+  }
+
+  /**
+ * Re-wrap a recorded answer for the request replaying it.
+ *
+ * Everything the owner said about the child is kept; only a correlation id the recorded body carries
+ * is replaced with the current caller's, so a client waiting on this call does not read the answer as
+ * belonging to the request that created the child.
+ * @param recorded - Body the owner answered with when the child was created.
+ * @param rpcId - Correlation id of the request being served now.
+ * @returns The body to answer with.
+ */
+  function correlateForkAnswer(recorded: unknown, rpcId: string | undefined): unknown {
+    if (rpcId === undefined || !isRecord(recorded) || !('rpcId' in recorded)) return recorded
+    return { ...recorded, rpcId }
+  }
+
+  /**
+ * Identity of one logical fork request, or undefined when the caller named no operation.
+ *
+ * It binds the trusted viewer identity, the share, and the source session to the caller's operation id
+ * — never the boundary, which is payload the recorded operation is compared against. An absent
+ * operation id leaves the request unidentified, so it behaves as before rather than being folded onto
+ * some other caller's intent.
+ * @param shareId - Share the request arrived through.
+ * @param actor - Trusted viewer identity the Relay asserted.
+ * @param sourceSessionId - Session the fork would branch from.
+ * @param operationId - Caller-supplied operation id, when it named one.
+ * @returns The identity, whose fields cannot collide because the separator is not an id character.
+ */
+  function forkOperationIdentity(
+    shareId: string,
+    actor: ShareRpcActor,
+    sourceSessionId: string,
+    operationId: string | undefined,
+  ): string | undefined {
+    if (operationId === undefined) return undefined
+    return [actor.providerId, actor.tenantId, actor.subjectId, shareId, sourceSessionId, operationId]
+      .join('\u0000')
+  }
+
+  /**
+ * The answer a caller gets when one operation id names a boundary its earlier request did not.
+ * @returns The conflict answer, which names the request rather than creating a second child.
+ */
+  function forkOperationConflict(): ViewerAnswer {
+    return {
+      status: 409,
+      body: {
+        error: 'fork-operation-conflict',
+        message: 'this request already created a fork at another boundary',
+      },
+    }
+  }
+
+  /**
+ * The answer for a fork whose child was created but could not be given read-only limits.
+ *
+ * The child is named so the owner can find it, and the answer is a failure: a child that cannot be
+ * driven is not a fork the viewer got.
+ * @param childSessionId - Child that exists in the owner's log without a limit.
+ * @returns The refusal, which a retry of the same request also receives.
+ */
+  function forkEnforcementFailed(childSessionId: string): ViewerAnswer {
+    return {
+      status: 503,
+      body: {
+        error: 'fork-enforcement-failed',
+        message: `fork ${childSessionId} was created without read-only limits and cannot be driven`,
+        sessionId: childSessionId,
+      },
+    }
+  }
+
+  /**
+ * Read the child session id out of the owner's fork answer.
+ * @param answer Owner's answer to the fork call.
+ * @returns The child session id, or undefined when the fork did not report one.
+ */
+  function forkedSessionId(answer: ViewerAnswer): string | undefined {
+    if (answer.status !== 200 || !isRecord(answer.body)) return undefined
+    const result = answer.body.result
+    if (!isRecord(result) || result.ok !== true || !isRecord(result.value)) return undefined
+    const sessionId = result.value.sessionId
+    return typeof sessionId === 'string' && sessionId !== '' ? sessionId : undefined
+  }
+
+
+  /**
+ * Add the branch facts this reader was given to its own forks in one `session/list` answer.
+ *
+ * The Session Controller already returned only the rows the `share-viewer` policy lets this reader see;
+ * a kept fork carries its branch facts as that row's projection value, because the shared Session summary
+ * states no branch fields.
+ * @param answer Owner's own `session/list` answer.
+ * @param shareId Share the request arrived through.
+ * @param actor Viewer identity the Relay asserted.
+ * @param forks Registry of children this Host created.
+ * @returns The answer, with this reader's forks annotated for its sidebar.
+ */
+  function annotateSessionList(
+    answer: ViewerAnswer,
+    shareId: string,
+    actor: ShareRpcActor,
+    forks: ForkRegistry | undefined,
+  ): ViewerAnswer {
+    if (answer.status !== 200 || !isRecord(answer.body)) return answer
+    const result = answer.body.result
+    if (!isRecord(result) || result.ok !== true || !isRecord(result.value)) return answer
+    const items = result.value.items
+    if (!Array.isArray(items)) return answer
+    const annotated = items.map((item): unknown => {
+      if (!isRecord(item) || typeof item.sessionId !== 'string') return item
+      const lineage = forkLineageFor(shareId, item.sessionId, actor, forks)
+      return lineage === undefined ? item : { ...item, projections: listHintsWithForkLineage(item.projections, lineage) }
+    })
+    return { status: answer.status, body: { ...answer.body, result: { ...result, value: { ...result.value, items: annotated } } } }
+  }
+
+  /**
+ * Branch facts one reader was given for one Session, or undefined when it is not that reader's branch.
+ *
+ * A reader reaches a branch only through the share it created it from, so the registry's creator is
+ * the whole test. The whole subject decides it, not just the provider and subject id: the same person
+ * can exist in two tenants, and the Relay's tenant admission is not a substitute for this check.
+ * @param shareId - Share the read arrived through.
+ * @param sessionId - Session the read names.
+ * @param actor - Viewer identity the Relay asserted.
+ * @param forks - Registry of children this Host created.
+ * @returns The branch facts to publish, or undefined.
+ */
+  function forkLineageFor(
+    shareId: string,
+    sessionId: string,
+    actor: ShareRpcActor,
+    forks: ForkRegistry | undefined,
+  ): ForkLineage | undefined {
+    if (forks === undefined) return undefined
+    const child = forks.find(sessionId)
+    if (child === undefined || child.shareId !== shareId) return undefined
+    if (identityKeyOf(child.creator) !== identityKeyOf(actor)) return undefined
+    return forkLineageValue(child.sourceSessionId)
+  }
+
+  /**
+ * One owner projection block with the branch facts added to its values.
+ * @param block - Projection block the owner produced, when the row carries one.
+ * @param lineage - Branch facts for the block's Session.
+ * @returns The block, with the facts under their projection key.
+ */
+  function withForkLineageValues(block: unknown, lineage: ForkLineage): Record<string, unknown> {
+    const record = isRecord(block) ? block : {}
+    const values = isRecord(record.values) ? record.values : {}
+    return {
+      ...record,
+      asOfSeq: typeof record.asOfSeq === 'number' ? record.asOfSeq : 0,
+      values: { ...values, [FORK_LINEAGE_KEY]: lineage },
+    }
+  }
+
+  /**
+ * One session list row's projection hints with the branch facts this reader was given.
+ * @param block - Projection hints the owner's own list row carried, when it carried any.
+ * @param lineage - Branch facts for that row's Session.
+ * @returns Hints naming their sequence space, with the facts added.
+ */
+  function listHintsWithForkLineage(block: unknown, lineage: ForkLineage): Record<string, unknown> {
+    const record = isRecord(block) ? block : {}
+    return {
+      ...withForkLineageValues(record, lineage),
+      // The owner's own block names its sequence space. A row the owner served without one was viewed
+      // from its persisted checkpoint, so the added facts are a listing hint too.
+      kind: record.kind === 'sequenced' ? 'sequenced' : 'cached',
+    }
+  }
+
+  /**
+ * One owner answer with the branch facts added to its page's projection block.
+ * @param answer - The owner gateway's own answer.
+ * @param lineage - Branch facts for the Session that answer describes.
+ * @returns The answer, with the facts added to its projections.
+ */
+  function withForkLineageAnswer(answer: ViewerAnswer, lineage: ForkLineage): ViewerAnswer {
+    if (answer.status !== 200 || !isRecord(answer.body)) return answer
+    const result = answer.body.result
+    if (!isRecord(result) || result.ok !== true || !isRecord(result.value)) return answer
+    return {
+      ...answer,
+      body: {
+        ...answer.body,
+        result: {
+          ...result,
+          value: {
+            ...result.value,
+            projections: withForkLineageValues(result.value.projections, lineage),
+          },
+        },
+      },
+    }
+  }
+
+  /**
+ * Add the branch facts this reader was given wherever a relayed stream carries a projection block.
+ *
+ * The facts are not folded from the Session log, so an owner baseline never states them: without
+ * this, a branch would lose the value a page learned from the session list the moment that branch's
+ * own baseline replaced the block.
+ * @param values - Frames the owner gateway streams for one endpoint.
+ * @param endpoint - Stream endpoint being relayed.
+ * @param requested - Session the stream was opened for, when its open item named one.
+ * @param lineageOf - Branch facts for one Session, or undefined when it is not this reader's branch.
+ * @returns The same frames, with the facts added to their projection blocks.
+ */
+  async function* withForkLineageFrames(
+    values: AsyncIterable<unknown>,
+    endpoint: string,
+    requested: string | undefined,
+    lineageOf: (sessionId: string) => ForkLineage | undefined,
+  ): AsyncGenerator {
+    for await (const frame of values) {
+      if (!isRecord(frame)) {
+        yield frame
+        continue
+      }
+      if (endpoint === 'session/follow') {
+        const lineage = requested === undefined ? undefined : lineageOf(requested)
+        yield frame.type === 'snapshot' && lineage !== undefined
+          ? { ...frame, projections: withForkLineageValues(frame.projections, lineage) }
+          : frame
+        continue
+      }
+      // `session/control` carries one baseline block per Session the controller let this reader see. A later
+      // frame replaces one projection key, and this one is never replaced by the owner's own registry.
+      const value = isRecord(frame.value) ? frame.value : undefined
+      const projections = value !== undefined && isRecord(value.projections) ? value.projections : undefined
+      if (frame.type !== 'baseline' || value === undefined || projections === undefined) {
+        yield frame
+        continue
+      }
+      const annotated: Record<string, unknown> = {}
+      for (const [sessionId, block] of Object.entries(projections)) {
+        const lineage = lineageOf(sessionId)
+        annotated[sessionId] = lineage === undefined ? block : withForkLineageValues(block, lineage)
+      }
+      yield { ...frame, value: { ...value, projections: annotated } }
+    }
+  }
+
+  return {
+    answerFork,
+    prepareColdChild,
+    annotateSessionList: (answer, shareId, actor) => annotateSessionList(answer, shareId, actor, deps.forks),
+    lineageFor: (shareId, sessionId, actor) => forkLineageFor(shareId, sessionId, actor, deps.forks),
+    withLineageAnswer: withForkLineageAnswer,
+    withLineageFrames: withForkLineageFrames,
+  }
+}
diff --git a/packages/experimental/liveshare/src/host/viewer-lifecycle.ts b/packages/experimental/liveshare/src/host/viewer-lifecycle.ts
new file mode 100644
index 0000000000..ee2ef70f84
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/viewer-lifecycle.ts
@@ -0,0 +1,576 @@
+/**
+ * Lifecycle state of one viewer reader: streams, calls, reader Peers, and share refusals.
+ *
+ * Every viewer request is admitted against the share's lifecycle here, and every resource a request
+ * opens — a reader Peer, an open stream, an in-flight call, a child's enforcement — is released from
+ * this module. Closing a share or a viewer walks exactly the resources that belong to it.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/viewer-lifecycle
+ */
+
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { isExpired, type ForkShareState } from './fork-policy.ts'
+import { shareViewerPrincipal } from './viewer-principal.ts'
+import type { ReaderWriteAction } from './viewer-access-policy.ts'
+import type { ViewerAnswer } from '../viewer-channel.ts'
+import type { ViewerReadDeps } from './viewer-read.ts'
+
+function sameActor(left: ShareRpcActor, right: ShareRpcActor): boolean {
+  return identityKeyOf(left) === identityKeyOf(right)
+}
+
+/**
+ * How long one open viewer stream may stay unpolled before this host releases it.
+ *
+ * A page polls each open stream without pause and one poll's hold is {@link STREAM_POLL_HOLD_MS}, so a
+ * stream nothing has polled for this long belongs to a page that is gone: closed, discarded by the
+ * browser, or offline past its own reconnect backoff. Releasing it stops this host holding the stream
+ * and the upstream subscription the owner's gateway opened for it. The value is many poll holds, so an
+ * ordinary reconnect or one slow answer never costs a stream the page is still reading.
+ */
+export const VIEWER_STREAM_IDLE_TTL_MS = 120_000
+
+/** How often open streams are checked against {@link VIEWER_STREAM_IDLE_TTL_MS}. */
+const STREAM_SWEEP_INTERVAL_MS = 30_000
+/**
+ * The refusal one share's own lifecycle applies, whatever a viewer asks through it.
+ *
+ * A share the owner stopped and one whose deadline passed authorize nothing. The write path reads these
+ * two verdicts before it drives a Session; every read path reads them here, so a viewer cannot keep
+ * reading a share the owner ended. Share state this host cannot read — a host that publishes none — is
+ * not a refusal this function may name.
+ * @param share - Share state as the owner host holds it, when it holds one.
+ * @returns The refusal, or undefined while the share may serve.
+ */
+export function shareLifecycleRefusal(share: ForkShareState | undefined): ViewerAnswer | undefined {
+  if (share === undefined) return undefined
+  if (share.stopped) {
+    return { status: 403, body: { error: 'share-stopped', message: 'this share is stopped' } }
+  }
+  if (isExpired(share.expiresAt, Date.now())) {
+    return { status: 403, body: { error: 'share-expired', message: 'this share has expired' } }
+  }
+  return undefined
+}
+
+/**
+ * One stream this reader holds open for a viewer page, from the reservation that opened it until the
+ * page stops polling it or the share closes.
+ *
+ * The page's polls drive `pending`, and an unpolled stream past `lastPolledAt`'s idle deadline is a page
+ * that went away, so the reader releases the stream and the owner gateway's upstream subscription.
+ */
+export interface OpenStream {
+  readonly shareId: string
+  /** Stream id the page numbered this read under, which is also its key within the share. */
+  readonly id: number
+  readonly endpoint: string
+  /** Identity the stream opened as, re-checked on every poll. */
+  readonly actor: ShareRpcActor
+  readonly controller: AbortController
+  iterator: AsyncIterator<unknown>
+  pending: Promise<IteratorResult<unknown>> | undefined
+  /** When this stream last answered a poll; an unpolled stream is a page that went away. */
+  lastPolledAt: number
+}
+
+/** The Peer one reader of one share speaks for. */
+interface ReaderPeer {
+  readonly shareId: string
+  readonly actor: ShareRpcActor
+  readonly peer: PeerScope
+}
+/** One viewer call this reader is serving, tracked so a grant that ends can abort it. */
+export interface ViewerCall {
+  readonly shareId: string
+  readonly actor: ShareRpcActor
+  readonly controller: AbortController
+  readonly signal: AbortSignal
+  refreshing: boolean
+}
+
+/** A stream opening reserved before the owner gateway answers. */
+export interface OpeningReservation {
+  readonly shareId: string
+  readonly actor: ShareRpcActor
+  readonly controller: AbortController
+}
+
+/** Lifecycle state and refusal answers one viewer reader exposes. */
+export interface ViewerLifecycle {
+  /**
+   * The refusal one share's own lifecycle applies, whatever a viewer asks through it.
+   * @param shareId - Share the request arrived through.
+   * @param actor - Viewer identity the Relay asserted.
+   * @returns The refusal, or undefined while the share may still serve this viewer.
+   */
+  shareRefusal(shareId: string, actor: ShareRpcActor): ViewerAnswer | undefined
+  /**
+   * The policy's refusal of one reader prompt or cancel on one Session, as the page's refusal answer.
+   * @param shareId - Share the request arrived through.
+   * @param actor - Viewer identity the Relay asserted.
+   * @param action - `session/prompt` or `session/cancel`.
+   * @param sessionId - Session the request names.
+   * @param concrete - True for the call about to be dispatched, false for the snapshot rule.
+   * @returns The refusal, or undefined while the policy allows the request.
+   */
+  accessRefusal(
+    shareId: string,
+    actor: ShareRpcActor,
+    action: ReaderWriteAction,
+    sessionId: string,
+    concrete: boolean,
+  ): (ViewerAnswer & { readonly reason: string }) | undefined
+  /**
+   * The share's lifecycle refusal followed by the policy's write refusal.
+   * @param shareId - Share the request arrived through.
+   * @param actor - Viewer identity the Relay asserted.
+   * @param action - `session/prompt` or `session/cancel`.
+   * @param source - Session the request names.
+   * @returns The refusal, or undefined while the request may be dispatched.
+   */
+  trustedState(shareId: string, actor: ShareRpcActor, action: ReaderWriteAction, source: string): ViewerAnswer | undefined
+  /**
+   * Refresh authoritative admission, marking the call whose signal it is as refreshing.
+   * @param shareId - Share to refresh.
+   * @param signal - Signal of the request being refreshed.
+   */
+  refreshAdmission(shareId: string, signal?: AbortSignal): Promise<void>
+  /**
+   * Track one call as in flight.
+   * @param shareId - Share the call belongs to.
+   * @param actor - Caller identity.
+   * @param controller - Controller that aborts this call.
+   * @param signal - Signal that identifies this call during a refresh.
+   * @returns The tracked call.
+   */
+  beginCall(shareId: string, actor: ShareRpcActor, controller: AbortController, signal: AbortSignal): ViewerCall
+  /**
+   * Stop tracking one call.
+   * @param call - The call that ended.
+   */
+  endCall(call: ViewerCall): void
+  /**
+   * The Peer one reader of one share speaks for, created on its first dispatch.
+   * @param shareId - Share the call belongs to.
+   * @param actor - Reader identity.
+   * @returns The Peer, or undefined when this host has no Connection.
+   */
+  peerFor(shareId: string, actor: ShareRpcActor): PeerScope | undefined
+  /**
+   * Dispose every tracked Reader Peer that matches.
+   * @param matches - Which Peers to dispose.
+   */
+  disposePeers(matches: (entry: ReaderPeer) => boolean): void
+  /**
+   * One open stream.
+   * @param shareId - Share the stream belongs to.
+   * @param id - Stream id the page numbered.
+   * @returns The stream, or undefined when none is open.
+   */
+  streamOf(shareId: string, id: number): OpenStream | undefined
+  /**
+   * One stream opening reserved before the owner gateway answers.
+   * @param shareId - Share the stream belongs to.
+   * @param id - Stream id the page numbered.
+   * @returns The reservation, or undefined when none is held.
+   */
+  openingOf(shareId: string, id: number): OpeningReservation | undefined
+  /**
+   * Reserve one stream id before the owner gateway answers.
+   * @param shareId - Share the stream belongs to.
+   * @param id - Stream id the page numbered.
+   * @param reservation - Reservation to hold.
+   */
+  reserveOpening(shareId: string, id: number, reservation: OpeningReservation): void
+  /**
+   * Drop one opening reservation when it is still the one held.
+   * @param shareId - Share the stream belongs to.
+   * @param id - Stream id the page numbered.
+   * @param reservation - Reservation the opener holds.
+   * @returns True when this reservation was the one still held.
+   */
+  releaseOpening(shareId: string, id: number, reservation: OpeningReservation): boolean
+  /**
+   * Record one opened stream and arm the idle sweep.
+   * @param stream - Stream the owner gateway opened.
+   */
+  registerStream(stream: OpenStream): void
+  /**
+   * Release one stream and the upstream subscription it holds.
+   * @param shareId - Share the stream belongs to.
+   * @param id - Stream id the page numbered.
+   */
+  release(shareId: string, id: number): void
+  /**
+   * Whether one stream is still the open one under its key.
+   * @param shareId - Share the stream belongs to.
+   * @param id - Stream id the page numbered.
+   * @param stream - Stream to compare.
+   * @returns True while that stream is current and not aborted.
+   */
+  streamIsCurrent(shareId: string, id: number, stream: OpenStream): boolean
+  /** Arm the timer that reclaims streams nothing polls. */
+  armSweep(): void
+  /**
+   * Keep one child's enforcement release until its share or reader ends.
+   * @param childSessionId - Child whose limit was installed.
+   * @param releaseEnforcement - Disposer that releases the limit.
+   */
+  holdEnforcement(childSessionId: string, releaseEnforcement: () => void): void
+  /**
+   * Cancel pending calls without releasing retained streams or child enforcement.
+   * @param shareId - Share whose mode was narrowed.
+   */
+  cancelPendingCalls(shareId: string): void
+  /**
+   * End only calls, streams, and reader Peers whose reader lost admission.
+   * @param shareId - Share whose readers are re-checked.
+   */
+  recheckAdmission(shareId: string): void
+  /**
+   * Cancel pending calls, release every stream, and dispose every reader Peer of one share.
+   * @param shareId - Share whose pending calls, streams, and Peers end.
+   */
+  closeShare(shareId: string): void
+  /**
+   * End only calls, streams, and reader Peers of one reader of one share.
+   * @param shareId - Share the viewer's streams belong to.
+   * @param viewer - Identity the Relay asserted when those streams opened.
+   * @returns How many streams were released.
+   */
+  closeViewerStreams(shareId: string, viewer: ShareRpcActor): number
+  /** Cancel pending calls, release every open stream, and dispose every reader Peer. */
+  close(): void
+}
+
+/**
+ * Build the lifecycle state of one viewer reader.
+ * @param deps - Host services and the share-to-Session lookup.
+ * @returns Lifecycle state and refusal answers.
+ */
+export function createViewerLifecycle(deps: ViewerReadDeps): ViewerLifecycle {
+  const streams = new Map<string, OpenStream>()
+  const calls = new Set<ViewerCall>()
+  // The current call reports the refreshed refusal itself; other work still loses admission immediately.
+  const refreshAdmission = async (shareId: string, signal?: AbortSignal): Promise<void> => {
+    const current = [...calls].find(call => call.signal === signal)
+    if (current !== undefined) current.refreshing = true
+    try {
+      await deps.refreshAdmission?.(shareId, signal)
+    } finally {
+      if (current !== undefined) current.refreshing = false
+    }
+  }
+  const cancelCalls = (shareId: string, actor?: ShareRpcActor): void => {
+    for (const call of calls) {
+      if (call.shareId !== shareId || (actor !== undefined && !sameActor(call.actor, actor))) continue
+      calls.delete(call)
+      call.controller.abort(new Error(actor === undefined ? 'Share access ended' : 'Viewer access ended'))
+    }
+  }
+  const opening = new Map<string, { shareId: string; actor: ShareRpcActor; controller: AbortController }>()
+  /** Live enforcement per child, released with the child's share so a disposal refuses again. */
+  const enforcement = new Map<string, () => void>()
+  const key = (shareId: string, id: number): string => `${shareId}\u0000${String(id)}`
+  const streamIsCurrent = (shareId: string, id: number, stream: OpenStream): boolean =>
+    !stream.controller.signal.aborted && streams.get(key(shareId, id)) === stream
+
+  /**
+   * One Peer per share and reader, created on its first dispatch.
+   *
+   * Every page and tab of one reader shares it: the viewer channel carries no connection identity. A
+   * disposed Peer is replaced on the reader's next admitted request, and a call still in flight on the
+   * disposed one is refused by the Gateway.
+   */
+  const peers = new Map<string, ReaderPeer>()
+  const peerKey = (shareId: string, actor: ShareRpcActor): string => `${shareId}\u0000${identityKeyOf(actor)}`
+  const peerFor = (shareId: string, actor: ShareRpcActor): PeerScope | undefined => {
+    const connection = deps.connection
+    if (connection === undefined) return undefined
+    const held = peers.get(peerKey(shareId, actor))
+    if (held !== undefined && !held.peer.signal.aborted) return held.peer
+    const peer = connection.createPeer({ principal: shareViewerPrincipal(shareId, actor) })
+    peers.set(peerKey(shareId, actor), { shareId, actor, peer })
+    return peer
+  }
+  const disposePeers = (matches: (entry: ReaderPeer) => boolean): void => {
+    for (const [entryKey, entry] of peers) {
+      if (!matches(entry)) continue
+      peers.delete(entryKey)
+      entry.peer.dispose().catch((error: unknown) => {
+        // Disposal failures belong to the registrations the Peer carried; the reader is already detached.
+        console.warn(
+          `[liveshare] viewer peer disposal failed share=${entry.shareId}`
+          + ` error=${error instanceof Error ? error.message : String(error)}`,
+        )
+      })
+    }
+  }
+
+  /** Timer sweeping streams nothing polls; armed while this reader holds at least one stream. */
+  let sweepTimer: ReturnType<typeof setInterval> | undefined
+  const stopSweep = (): void => {
+    if (sweepTimer === undefined) return
+    clearInterval(sweepTimer)
+    sweepTimer = undefined
+  }
+  /**
+   * Release every stream no page has polled within {@link VIEWER_STREAM_IDLE_TTL_MS}.
+   *
+   * A page that closed, crashed, or lost its network leaves its streams behind: the client's own
+   * `stream-cancel` travels the same request/poll channel as its reads and is dropped with them, so
+   * nothing else tells this host the reader is gone. Idleness is that signal, and releasing a stream
+   * aborts the upstream subscription the owner's gateway opened for it.
+   */
+  const sweepIdleStreams = (): void => {
+    const now = Date.now()
+    for (const [streamKey, stream] of streams) {
+      const idleMs = now - stream.lastPolledAt
+      if (idleMs <= VIEWER_STREAM_IDLE_TTL_MS) continue
+      streams.delete(streamKey)
+      stream.controller.abort()
+      void stream.iterator.return?.(undefined).catch(() => undefined)
+      console.warn(
+        `[liveshare] viewer stream reclaimed share=${stream.shareId}`
+        + ` streamId=${String(stream.id)} idleMs=${String(idleMs)}`,
+      )
+    }
+    if (streams.size === 0) stopSweep()
+  }
+  const armSweep = (): void => {
+    if (sweepTimer !== undefined) return
+    const timer = setInterval(sweepIdleStreams, STREAM_SWEEP_INTERVAL_MS)
+    // Idle cleanup is not work the process owes anyone: it must never hold a host open by itself.
+    timer.unref()
+    sweepTimer = timer
+  }
+  /** Drop the sweep timer once the last stream is gone, so an idle reader keeps no timer at all. */
+  const stopSweepWhenIdle = (): void => {
+    if (streams.size === 0) stopSweep()
+  }
+
+  const release = (shareId: string, id: number): void => {
+    const streamKey = key(shareId, id)
+    const reserved = opening.get(streamKey)
+    if (reserved !== undefined) {
+      opening.delete(streamKey)
+      reserved.controller.abort()
+    }
+    const stream = streams.get(streamKey)
+    if (stream === undefined) return
+    streams.delete(streamKey)
+    stream.controller.abort()
+    void stream.iterator.return?.(undefined).catch(() => undefined)
+    stopSweepWhenIdle()
+  }
+
+  /**
+   * The answer refusing one viewer request over a share this host may no longer serve it through.
+   *
+   * The verdicts are the write path's own, so one share state reads the same whatever a viewer asks:
+   * a stopped share is `share-stopped`, a share past its deadline is `share-expired`, and a viewer whose
+   * grant ended is `viewer-not-authorized`. Each is a stable code the served page already classifies as
+   * terminal, so a refused read states the reason instead of reconnecting around it. A host with no
+   * share state to read — the focused reader tests — invents no refusal.
+   * @param shareId - Share the request arrived through.
+   * @param actor - Viewer identity the Relay asserted.
+   * @returns The refusal, or undefined while the share may still serve this viewer.
+   */
+  const shareRefusal = (shareId: string, actor: ShareRpcActor): ViewerAnswer | undefined => {
+    const lifecycle = shareLifecycleRefusal(deps.forkStateOf?.(shareId))
+    if (lifecycle !== undefined) return lifecycle
+    if (deps.viewerStillAdmitted === undefined) return undefined
+    return deps.viewerStillAdmitted(shareId, actor)
+      ? undefined
+      : {
+        status: 403,
+        body: {
+          error: 'viewer-not-authorized',
+          message: 'this viewer no longer holds access to this share',
+        },
+      }
+  }
+
+  /**
+   * The policy's refusal of one reader prompt or cancel on one Session, as the page's refusal answer.
+   * @param shareId - Share the request arrived through.
+   * @param actor - Viewer identity the Relay asserted.
+   * @param action - `session/prompt` or `session/cancel`.
+   * @param sessionId - Session the request names.
+   * @param concrete - True for the call about to be dispatched, false for the snapshot rule.
+   * @returns The refusal, or undefined while the policy allows the request.
+   */
+  const accessRefusal = (
+    shareId: string,
+    actor: ShareRpcActor,
+    action: ReaderWriteAction,
+    sessionId: string,
+    concrete: boolean,
+  ): (ViewerAnswer & { readonly reason: string }) | undefined => {
+    const reason = deps.writeRefusal?.(shareViewerPrincipal(shareId, actor), action, sessionId, concrete)
+    return reason === undefined ? undefined : { reason, status: 403, body: { error: reason } }
+  }
+  function cancelPendingCalls(shareId: string): void {
+    cancelCalls(shareId)
+  }
+
+  function recheckAdmission(shareId: string): void {
+    for (const call of calls) {
+      if (call.shareId === shareId && !call.refreshing && shareRefusal(shareId, call.actor) !== undefined) {
+        call.controller.abort(new Error('Viewer access ended'))
+      }
+    }
+    for (const held of [...opening.values(), ...streams.values()]) {
+      if (held.shareId === shareId && shareRefusal(shareId, held.actor) !== undefined) {
+        for (const [streamKey, candidate] of opening) {
+          if (candidate === held) { opening.delete(streamKey); candidate.controller.abort() }
+        }
+        for (const candidate of streams.values()) {
+          if (candidate === held) release(shareId, candidate.id)
+        }
+      }
+    }
+    disposePeers(entry => entry.shareId === shareId && shareRefusal(shareId, entry.actor) !== undefined)
+  }
+
+  function closeShare(shareId: string): void {
+    cancelCalls(shareId)
+    for (const [streamKey, reserved] of opening) {
+      if (reserved.shareId !== shareId) continue
+      opening.delete(streamKey)
+      reserved.controller.abort()
+    }
+    for (const [streamKey, stream] of streams) {
+      if (stream.shareId === shareId) {
+        streams.delete(streamKey)
+        stream.controller.abort()
+        void stream.iterator.return?.(undefined).catch(() => undefined)
+      }
+    }
+    stopSweepWhenIdle()
+    disposePeers(entry => entry.shareId === shareId)
+    // A share going away takes its children's limits with it, so a child that outlives its share
+    // refuses again rather than running under a limit nobody can attribute.
+    for (const [childSessionId, releaseEnforcement] of enforcement) {
+      if (deps.forks?.find(childSessionId)?.shareId !== shareId) continue
+      releaseEnforcement()
+      enforcement.delete(childSessionId)
+    }
+  }
+
+  function closeViewerStreams(shareId: string, viewer: ShareRpcActor): number {
+    cancelCalls(shareId, viewer)
+    let released = 0
+    for (const [streamKey, reserved] of opening) {
+      if (reserved.shareId !== shareId || !sameActor(reserved.actor, viewer)) continue
+      opening.delete(streamKey)
+      reserved.controller.abort()
+      released += 1
+    }
+    for (const [streamKey, stream] of streams) {
+      if (stream.shareId !== shareId || !sameActor(stream.actor, viewer)) continue
+      streams.delete(streamKey)
+      stream.controller.abort()
+      void stream.iterator.return?.(undefined).catch(() => undefined)
+      released += 1
+    }
+    stopSweepWhenIdle()
+    disposePeers(entry => entry.shareId === shareId && sameActor(entry.actor, viewer))
+    return released
+  }
+
+  function close(): void {
+    for (const call of calls) call.controller.abort(new Error('Viewer service disposed'))
+    calls.clear()
+    for (const reserved of opening.values()) reserved.controller.abort()
+    opening.clear()
+    for (const stream of streams.values()) {
+      stream.controller.abort()
+      void stream.iterator.return?.(undefined).catch(() => undefined)
+    }
+    streams.clear()
+    stopSweep()
+    disposePeers(() => true)
+    for (const releaseEnforcement of enforcement.values()) releaseEnforcement()
+    enforcement.clear()
+  }
+
+  /** The share's lifecycle refusal followed by the policy's write refusal. */
+  const trustedState = (
+    shareId: string,
+    actor: ShareRpcActor,
+    action: ReaderWriteAction,
+    source: string,
+  ): ViewerAnswer | undefined =>
+    shareRefusal(shareId, actor) ?? accessRefusal(shareId, actor, action, source, true)
+
+  function beginCall(
+    shareId: string,
+    actor: ShareRpcActor,
+    controller: AbortController,
+    signal: AbortSignal,
+  ): ViewerCall {
+    const call: ViewerCall = { shareId, actor, controller, signal, refreshing: false }
+    calls.add(call)
+    return call
+  }
+
+  function endCall(call: ViewerCall): void {
+    calls.delete(call)
+  }
+
+  function streamOf(shareId: string, id: number): OpenStream | undefined {
+    return streams.get(key(shareId, id))
+  }
+
+  function openingOf(shareId: string, id: number): OpeningReservation | undefined {
+    return opening.get(key(shareId, id))
+  }
+
+  function reserveOpening(shareId: string, id: number, reservation: OpeningReservation): void {
+    opening.set(key(shareId, id), reservation)
+  }
+
+  function releaseOpening(shareId: string, id: number, reservation: OpeningReservation): boolean {
+    const streamKey = key(shareId, id)
+    if (opening.get(streamKey) !== reservation) return false
+    opening.delete(streamKey)
+    return true
+  }
+
+  function registerStream(stream: OpenStream): void {
+    streams.set(key(stream.shareId, stream.id), stream)
+    armSweep()
+  }
+
+  function holdEnforcement(childSessionId: string, releaseEnforcement: () => void): void {
+    enforcement.set(childSessionId, releaseEnforcement)
+  }
+
+  return {
+    shareRefusal,
+    accessRefusal,
+    trustedState,
+    refreshAdmission,
+    beginCall,
+    endCall,
+    peerFor,
+    disposePeers,
+    streamOf,
+    openingOf,
+    reserveOpening,
+    releaseOpening,
+    registerStream,
+    release,
+    streamIsCurrent,
+    armSweep,
+    holdEnforcement,
+    cancelPendingCalls,
+    recheckAdmission,
+    closeShare,
+    closeViewerStreams,
+    close,
+  }
+}
diff --git a/packages/experimental/liveshare/src/host/viewer-principal.ts b/packages/experimental/liveshare/src/host/viewer-principal.ts
new file mode 100644
index 0000000000..68d98fb836
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/viewer-principal.ts
@@ -0,0 +1,84 @@
+/**
+ * Caller identity of one share reader on this owner Host.
+ *
+ * Every Remote call a reader makes through a share speaks for a Peer whose principal is this value, so
+ * the Gateway, the `share-viewer` remote access policy, and the durable `user-rpc` message source all
+ * name the reader the same way. The value is persisted in Session logs through `source.principal`, so it carries only the
+ * share and the Relay-asserted identity: the triple plus an optional display name for attribution; no credential or avatar.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/viewer-principal
+ */
+
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { Principal } from '@deepseek-ai/dsh-typert-protocol'
+
+declare module '@deepseek-ai/dsh-typert-protocol' {
+  interface PrincipalMap {
+    /** One reader of one LiveShare share, as the Relay asserted it. */
+    'share-viewer': ShareViewerPrincipal
+  }
+}
+
+/** One reader of one share, identified by the share and the Relay-asserted identity triple. */
+export interface ShareViewerPrincipal {
+  readonly kind: 'share-viewer'
+  /** Share the reader's calls arrive through. */
+  readonly shareId: string
+  /** Relay-asserted reader identity; the display name is attribution data, not authority. */
+  readonly actor: {
+    readonly providerId: string
+    readonly tenantId: string
+    readonly subjectId: string
+    readonly displayName?: string
+  }
+}
+
+/**
+ * Build the principal one reader's calls speak for.
+ *
+ * The identity fields are copied one by one, so a Relay actor that also carries credential or
+ * avatar fields contributes only the identity and its display name to the persisted value.
+ * @param shareId - Share the reader's calls arrive through.
+ * @param actor - Relay-asserted reader identity.
+ * @returns The principal of that reader on that share.
+ */
+export function shareViewerPrincipal(shareId: string, actor: ShareRpcActor): ShareViewerPrincipal {
+  return {
+    kind: 'share-viewer',
+    shareId,
+    actor: {
+      providerId: actor.providerId,
+      tenantId: actor.tenantId,
+      subjectId: actor.subjectId,
+      ...(actor.displayName === undefined ? {} : { displayName: actor.displayName }),
+    },
+  }
+}
+
+/**
+ * The share reader one principal names, when it names one.
+ * @param principal - Caller identity a Peer or a message source carries.
+ * @returns The share-viewer principal, or undefined for every other kind.
+ */
+export function shareViewerOf(principal: Principal): ShareViewerPrincipal | undefined {
+  return principal.kind === 'share-viewer' ? principal : undefined
+}
+
+/**
+ * Whether one principal is the given reader of the given share.
+ *
+ * Readers compare by their whole identity key: the same subject id issued by two providers, or in two
+ * tenants, is two readers.
+ * @param principal - Share-viewer principal to compare.
+ * @param shareId - Share the reader must belong to.
+ * @param actor - Reader identity to compare with.
+ * @returns True when share and identity key both match.
+ */
+export function isShareViewer(
+  principal: ShareViewerPrincipal,
+  shareId: string,
+  actor: ShareRpcActor,
+): boolean {
+  return principal.shareId === shareId && identityKeyOf(principal.actor) === identityKeyOf(actor)
+}
diff --git a/packages/experimental/liveshare/src/host/viewer-read.ts b/packages/experimental/liveshare/src/host/viewer-read.ts
new file mode 100644
index 0000000000..c071bf72b6
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/viewer-read.ts
@@ -0,0 +1,231 @@
+/**
+ * Owner-side reader for one share's viewer requests: assembly and the host services it reads.
+ *
+ * The Relay forwards each request unread, so this module is its only reader on the owner side. The
+ * reader is assembled from three cooperating parts: {@link createViewerLifecycle} owns streams, calls,
+ * Peers, and lifecycle refusals; {@link createViewerFork} owns fork orchestration and branch facts;
+ * {@link createViewerDispatch} classifies and answers each request. This module states the services
+ * those parts read and the interface the host mounts, so a host sees one reader with one contract.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/viewer-read
+ */
+
+import type { TypertGatewayWireStream } from '@deepseek-ai/dsh-api-gateway/types'
+import type { HostConnectionHandle } from '@deepseek-ai/dsh-client-connection'
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import type { ViewerAnswer, ViewerRequest } from '../viewer-channel.ts'
+import type { ForkRegistry } from './fork-registry.ts'
+import type { ForkShareState } from './fork-policy.ts'
+import type { ReaderWriteAction } from './viewer-access-policy.ts'
+import type { ShareViewerPrincipal } from './viewer-principal.ts'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { createViewerDispatch, type ViewerDispatch } from './viewer-dispatch.ts'
+import { createViewerFork, type ViewerFork } from './viewer-fork.ts'
+import { createViewerLifecycle, type ViewerLifecycle } from './viewer-lifecycle.ts'
+
+export { VIEWER_STREAM_IDLE_TTL_MS } from './viewer-lifecycle.ts'
+
+/** Host Connection members the owner dispatches viewer calls through. */
+export type ViewerReadConnection = Pick<HostConnectionHandle, 'createSharedFetchHandler' | 'createPeer'>
+
+/**
+ * Minimal Typert gateway view the owner needs to open viewer streams.
+ *
+ * `wireStream` is the base gateway's own exported stream contract, so the opener's positional
+ * arguments keep the meaning the gateway gives them: uplink, peer, then cancellation signal.
+ */
+export interface ViewerReadGateway {
+  /** Carrier-facing stream opener and failure mapping shared by every Remote carrier. */
+  readonly wireStream: TypertGatewayWireStream
+}
+
+/** Host services one owner uses to answer viewer reads. */
+export interface ViewerReadDeps {
+  /** Host Connection service; absent in profiles without the api gateway. */
+  readonly connection?: ViewerReadConnection
+  /** Typert gateway; absent in profiles without the api gateway. */
+  readonly gateway?: ViewerReadGateway
+  /**
+   * Session the named share currently points at.
+   * @param shareId - Share the Relay addressed.
+   * @returns The shared Session id, or undefined when the share is gone.
+   */
+  readonly sharedSessionId: (shareId: string) => string | undefined
+  /** Forked children this Host created, so a viewer's list can show exactly its own. */
+  readonly forks?: ForkRegistry
+  /**
+   * Share facts a fork decision needs, as the owner host holds them.
+   *
+   * The Relay already admitted this viewer to the share before the request arrived here, so the
+   * admission fact is true by construction; the rest — the owner's fork switch, the session the share
+   * carries, its expiry — is what decides whether the fork is allowed.
+   */
+  readonly forkStateOf?: (shareId: string) => ForkShareState | undefined
+  /**
+   * Whether the viewer the Relay asserted still holds access to one share this host publishes.
+   *
+   * Admission is asserted request by request, but a grant can end between two of them, and a viewer
+   * whose access ended must not keep reading on an admission that is no longer true. The host answers
+   * with the same rule its queued-turn re-check applies, so one grant reads the same on every path.
+   * Absent, only the share's own lifecycle is re-checked and the Relay's assertion stands.
+   * @param shareId - Share the request arrived through.
+   * @param viewer - Identity the Relay asserted for this request.
+   * @returns True while that identity still holds access to that share.
+   */
+  readonly viewerStillAdmitted?: (shareId: string, viewer: ShareRpcActor) => boolean
+  /** Refresh authoritative admission at request ingress and immediately before execution dispatch. */
+  readonly refreshAdmission?: (shareId: string, signal?: AbortSignal) => Promise<void>
+  /**
+   * The refusal the `share-viewer` policy's write rules give one reader prompt or cancel, read before
+   * dispatch.
+   *
+   * A refusal found here is answered with its own code as the page's refusal code, and nothing is
+   * prepared or dispatched for it; the Gateway decides the call again from the policy when it is
+   * dispatched. Absent, every request is dispatched and the Gateway's answer stands.
+   * @param viewer - The reader.
+   * @param action - The write action.
+   * @param sessionId - Session the write names.
+   * @param concrete - True for the call about to be dispatched, false for the snapshot rule.
+   * @returns The refusal code, or undefined when the policy allows the write.
+   */
+  readonly writeRefusal?: (
+    viewer: ShareViewerPrincipal,
+    action: ReaderWriteAction,
+    sessionId: string,
+    concrete: boolean,
+  ) => string | undefined
+  /**
+   * Report that a fork this reader created changed the `share-viewer` policy's bindings, so open access
+   * snapshots are recomputed.
+   */
+  readonly accessChanged?: () => void
+  /**
+   * Whether the share's source Session currently carries a usable confined access layer.
+   *
+   * A `write` share drives that Session with the viewer's input, so the prompt is refused unless the host
+   * installed the layer that confines it. Absent means no layer this host can vouch for.
+   */
+  readonly sourceConfined?: (shareId: string) => boolean
+  /**
+   * Why the share's source Session carries no usable layer, when the host recorded a reason.
+   *
+   * Diagnostics for the refusal's body: a capability the backend lacks reads differently from a layer that
+   * was never attempted, and the owner or an integrator needs to tell those apart without a debugger.
+   */
+  readonly sourceRefusal?: (shareId: string) => string | undefined
+  /**
+   * Resolve or resume one Session through the owner's own service, without executing anything.
+   *
+   * A write share's source Session that this host has no confined layer for is prepared here first: the
+   * layer is installed by the setup every agent creation runs, so a restarted host gets one by preparing
+   * the Session rather than by driving it and hoping. Absent, nothing is prepared and the request is
+   * refused when the layer is missing.
+   */
+  readonly prepareSource?: (sessionId: string) => Promise<void>
+  /**
+   * Install this child's execution limit and return its disposer.
+   *
+   * `write` asks for a scope that may also write inside the granted workspace; a host that cannot install
+   * that bounded write refuses, so a write-mode share never falls back to an unbounded tool. Absent, or
+   * returning undefined, leaves the child refused: the prompt check reads the installation record.
+   */
+  readonly enforceChild?: (
+    childSessionId: string,
+    options?: { readonly write?: boolean },
+  ) => Promise<(() => void) | undefined>
+  /**
+   * Resolve or resume one child through the composition's own activation path, without executing
+   * anything.
+   *
+   * A child created in an earlier process has no installed limit, and the activation is exactly what
+   * installs it: the `agent/created` listeners run before the agent is published. Absent, or activating a
+   * child whose limit still cannot be installed, leaves the gate refusing it.
+   */
+  readonly prepareChild?: (childSessionId: string) => Promise<void>
+  /**
+   * Start preparing one share's writable source Session, without waiting for it.
+   *
+   * The write rules of the `share-viewer` policy need that Session's confinement layer, and a host that
+   * restarted with a restored write share could not install it during startup, while the Session's agent
+   * was not live: the reader's own snapshot then carried no write action, so its composer stayed inert and
+   * the prompt path that prepares the source was never reached. Asking here, when a reader requests the
+   * document or opens a stream, breaks that circle. The caller never waits, and a completed installation
+   * re-pushes the snapshot every open page is following.
+   * @param shareId - Share the reader's request arrived through.
+   */
+  readonly prepareSourceForReader?: (shareId: string) => void
+  /**
+   * Log every allowed and refused endpoint, for enumerating what a viewer boot reads. Each served page
+   * resource adds one line naming its path, byte count, and duration, so a page that renders nothing can
+   * be told apart from an owner that never received its reads.
+   */
+  readonly debug?: boolean
+  /**
+   * Read one resource of the owner's served page for an admitted viewer.
+   * @param path - Validated page-relative path: the index, `assets/...`, or `plugins/...`.
+   * @param peer - The reader's own Peer, whose access rows the frontend renders into the index.
+   * @returns The answer the page reads for that path; absent when this Host serves no page.
+   */
+  readonly readAsset?: (path: string, peer: PeerScope) => Promise<ViewerAnswer>
+}
+
+/** Owner-side reader answering one share's forwarded viewer requests. */
+export interface ViewerReadService {
+  /**
+   * Answer one request for one share.
+   * @param shareId - Share the Relay addressed.
+   * @param request - Validated viewer request.
+   * @param actor - Viewer identity the Relay asserted, which no projection may infer from the body.
+   * @param signal - Cancellation of the forwarded request, including a lost Relay connection.
+   * @returns The answer the Relay writes back to the viewer.
+   */
+  answer(shareId: string, request: ViewerRequest, actor: ShareRpcActor, signal?: AbortSignal): Promise<ViewerAnswer>
+  /**
+   * Cancel pending calls, release every stream, and dispose every reader Peer of one share.
+   * @param shareId - Share whose pending calls, streams, and Peers end.
+   */
+  closeShare(shareId: string): void
+  /**
+   * Cancel pending calls without releasing retained streams or child enforcement.
+   * @param shareId - Share whose mode was narrowed.
+   */
+  cancelPendingCalls(shareId: string): void
+  /**
+   * End only calls, streams, and reader Peers whose reader lost admission.
+   * @param shareId - Share whose readers are re-checked.
+   */
+  recheckAdmission(shareId: string): void
+  /**
+   * Cancel pending calls, release every stream, and dispose the Peer of one reader of one share.
+   *
+   * A grant that ended is not a reason to end another viewer's read of the same share, so the streams
+   * released here are exactly the ones opened as that identity.
+   * @param shareId - Share the viewer's streams belong to.
+   * @param viewer - Identity the Relay asserted when those streams opened.
+   * @returns How many streams were released.
+   */
+  closeViewerStreams(shareId: string, viewer: ShareRpcActor): number
+  /** Cancel pending calls, release every open stream, and dispose every reader Peer. */
+  close(): void
+}
+
+/**
+ * Build the owner-side reader.
+ * @param deps - Host services and the share-to-Session lookup.
+ * @returns Reader answering viewer requests for every share this host publishes.
+ */
+export function createViewerReadService(deps: ViewerReadDeps): ViewerReadService {
+  const lifecycle: ViewerLifecycle = createViewerLifecycle(deps)
+  // The fork and the dispatch call each other: a fork call goes through the dispatch, and a
+  // dispatched fork request goes through the fork orchestrator. Each side asks for the other only
+  // while answering a request, so one late binding breaks the construction cycle.
+  const fork: ViewerFork = createViewerFork({ deps, lifecycle, dispatch: () => dispatch })
+  const dispatch: ViewerDispatch = createViewerDispatch({ deps, lifecycle, fork: () => fork })
+  return {
+    answer: (shareId, request, actor, signal) => dispatch.answer(shareId, request, actor, signal),
+    cancelPendingCalls: (shareId) => { lifecycle.cancelPendingCalls(shareId) },
+    recheckAdmission: (shareId) => { lifecycle.recheckAdmission(shareId) },
+    closeShare: (shareId) => { lifecycle.closeShare(shareId) },
+    closeViewerStreams: (shareId, viewer) => lifecycle.closeViewerStreams(shareId, viewer),
+    close: () => { lifecycle.close() },
+  }
+}
diff --git a/packages/experimental/liveshare/src/host/wire-json.ts b/packages/experimental/liveshare/src/host/wire-json.ts
new file mode 100644
index 0000000000..6901534bdd
--- /dev/null
+++ b/packages/experimental/liveshare/src/host/wire-json.ts
@@ -0,0 +1,35 @@
+/**
+ * JSON payload helpers shared by the owner's HTTP adapters and Relay reads.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/host/wire-json
+ */
+
+/**
+ * Answer one JSON payload with the content type the owner routes use.
+ * @param value - Payload to serialize.
+ * @param status - HTTP status to answer with.
+ * @returns The response carrying the serialized payload.
+ */
+export function json(value: unknown, status: number): Response {
+  return new Response(JSON.stringify(value), {
+    status,
+    headers: { 'content-type': 'application/json; charset=utf-8' },
+  })
+}
+
+/**
+ * Whether one value is a plain record, the only object shape wire payloads may take.
+ * @param value - Value read from a wire payload.
+ * @returns Whether the value is a non-array object.
+ */
+export function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === 'object' && value !== null && !Array.isArray(value)
+}
+
+/**
+ * Read one JSON request body.
+ * @param request - Owner request that may carry JSON.
+ * @returns Parsed body, or undefined when the body is absent or malformed.
+ */
+export async function readJsonBody(request: Request): Promise<unknown> {
+  return await request.json().catch(() => undefined)
+}
diff --git a/packages/experimental/liveshare/src/index.ts b/packages/experimental/liveshare/src/index.ts
new file mode 100644
index 0000000000..148632b00f
--- /dev/null
+++ b/packages/experimental/liveshare/src/index.ts
@@ -0,0 +1,21 @@
+/**
+ * Owner-side Liveshare Web bundle plugin.
+ * @module @deepseek-ai/dsh-experimental-liveshare
+ */
+
+export { apply, name, inject, type Config } from './host/share-host.ts'
+export { LiveshareShares } from './host/share-remote.ts'
+export {
+  ViewerDeclarations,
+  viewerDeclarationsOf,
+  type ViewerDeclarationsSurface,
+} from './host/viewer-declarations.ts'
+
+import type { LiveshareShares } from './host/share-remote.ts'
+
+declare module '@deepseek-ai/cordis' {
+  interface Context {
+    /** Owner share management served to the owner page over Typert Remote. */
+    liveshareShares: LiveshareShares
+  }
+}
diff --git a/packages/experimental/liveshare/src/owner-gateway/cli.ts b/packages/experimental/liveshare/src/owner-gateway/cli.ts
new file mode 100644
index 0000000000..556de2ae22
--- /dev/null
+++ b/packages/experimental/liveshare/src/owner-gateway/cli.ts
@@ -0,0 +1,6 @@
+/** Entry point for the owner gateway worker, launched by the host over an IPC channel. */
+
+import { runGatewayWorker } from './worker.ts'
+
+if (process.send === undefined) throw new Error('Liveshare gateway requires the owner worker IPC channel')
+runGatewayWorker()
diff --git a/packages/experimental/liveshare/src/owner-gateway/pending-rpc.ts b/packages/experimental/liveshare/src/owner-gateway/pending-rpc.ts
new file mode 100644
index 0000000000..0d9bf8f31a
--- /dev/null
+++ b/packages/experimental/liveshare/src/owner-gateway/pending-rpc.ts
@@ -0,0 +1,78 @@
+/** Correlate IPC requests by worker-issued tokens and Relay ids by their exact socket. */
+
+import { randomUUID } from 'node:crypto'
+import type { TunnelRequestToken } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+
+/** One request and the exact Relay connection that may receive its response. */
+export interface PendingRequest<T> {
+  readonly token: TunnelRequestToken
+  readonly shareId: string
+  readonly id: number
+  readonly owner: T
+  readonly since: number
+}
+
+/** Request identities remain distinct when a Relay reconnects and reuses its numeric ids. */
+export class PendingRpc<T> {
+  private readonly tokens = new Map<TunnelRequestToken, PendingRequest<T>>()
+  private readonly owners = new Map<T, Map<number, PendingRequest<T>>>()
+
+  /**
+   * Register a request with a new IPC token.
+   * @param shareId Share carrying the request.
+   * @param id Relay id on this socket.
+   * @param owner Exact socket that received the request.
+   * @returns Registered request; an existing id must be cancelled before reuse on the same socket.
+   */
+  add(shareId: string, id: number, owner: T): PendingRequest<T> {
+    const request = { token: randomUUID() as TunnelRequestToken, shareId, id, owner, since: Date.now() }
+    let requests = this.owners.get(owner)
+    if (requests === undefined) {
+      requests = new Map()
+      this.owners.set(owner, requests)
+    }
+    if (requests.has(id)) throw new Error('Relay request id is already pending on this socket')
+    requests.set(id, request)
+    this.tokens.set(request.token, request)
+    return request
+  }
+
+  /**
+   * Claim an answer only when all IPC correlation fields match.
+   * @param answer Token, share and Relay id echoed by the Host.
+   * @returns The request removed from pending state, or undefined for a stale or mismatched answer.
+   */
+  take(answer: { readonly token: TunnelRequestToken; readonly shareId: string; readonly id: number }): PendingRequest<T> | undefined {
+    const request = this.tokens.get(answer.token)
+    if (request === undefined || request.shareId !== answer.shareId || request.id !== answer.id) return undefined
+    return this.cancel(request.owner, request.id)
+  }
+
+  /**
+   * Remove one socket-local request.
+   * @param owner Socket receiving the cancellation.
+   * @param id Relay id on that socket.
+   * @returns Removed request for cancellation notification, or undefined if it already settled.
+   */
+  cancel(owner: T, id: number): PendingRequest<T> | undefined {
+    const requests = this.owners.get(owner)
+    const request = requests?.get(id)
+    if (request === undefined) return undefined
+    this.tokens.delete(request.token)
+    requests?.delete(id)
+    if (requests?.size === 0) this.owners.delete(owner)
+    return request
+  }
+
+  /**
+   * Remove all requests on a closed socket.
+   * @param owner Socket being disposed.
+   * @returns Removed requests for Host cancellation notifications.
+   */
+  clear(owner: T): readonly PendingRequest<T>[] {
+    const requests = [...(this.owners.get(owner)?.values() ?? [])]
+    for (const request of requests) this.tokens.delete(request.token)
+    this.owners.delete(owner)
+    return requests
+  }
+}
diff --git a/packages/experimental/liveshare/src/owner-gateway/registration-url.ts b/packages/experimental/liveshare/src/owner-gateway/registration-url.ts
new file mode 100644
index 0000000000..436c101e88
--- /dev/null
+++ b/packages/experimental/liveshare/src/owner-gateway/registration-url.ts
@@ -0,0 +1,62 @@
+/**
+ * The registration handshake one share is published with.
+ *
+ * This URL is the one surface an older owner meets a newer Relay on, so what it states about the
+ * owner — the protocol version it reads frames with, and the capabilities it offers beyond them — is
+ * the only thing a Relay can compare instead of assuming. Keeping the whole handshake in one function
+ * is what lets a check pin it: every parameter here is read by a peer this repository does not build.
+ */
+
+import {
+  LIVESHARE_CAPABILITIES,
+  LIVESHARE_PROTOCOL_VERSION,
+  type TunnelShareSpec,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { relayEndpoint } from '../host/relay-url.ts'
+
+/**
+ * Build the WebSocket URL one share registers with.
+ *
+ * Absent optionals stay absent rather than being sent empty: the Relay reads a missing `sessionMode`
+ * as view-only and a missing `allowsFork` as no forking, so an older owner publishes the narrower
+ * share instead of a share whose fields a peer must interpret.
+ * @param spec - Share the owner host asked this worker to carry.
+ * @returns The registration URL, with this build's protocol version and capabilities stated.
+ */
+export function registrationUrl(spec: TunnelShareSpec): URL {
+  const relay = relayEndpoint(spec.relay)
+  const url = new URL(`${relay.basePath}/__tunnel_gateway__`, relay.origin)
+  url.protocol = url.protocol === 'https:' ? 'wss:' : 'ws:'
+  url.searchParams.set('shareId', spec.shareId)
+  url.searchParams.set('sessionId', spec.sessionId)
+  url.searchParams.set('sessionTitle', spec.sessionTitle)
+  url.searchParams.set('accessMode', spec.accessMode)
+  url.searchParams.set('ownerDisplayName', spec.ownerDisplayName)
+  if (spec.dshVersion !== undefined && spec.dshVersion !== '') {
+    url.searchParams.set('dshVersion', spec.dshVersion)
+  }
+  if (spec.ownerInstanceId !== undefined && spec.ownerInstanceId !== '') {
+    url.searchParams.set('ownerInstanceId', spec.ownerInstanceId)
+  }
+  // State how this build reads frames and what it offers beyond them, so a Relay can compare rather
+  // than assume, and can answer that this owner must upgrade instead of being met with silence. A
+  // Relay older than these parameters ignores them, which is what keeps the declaration additive.
+  url.searchParams.set('protocolVersion', String(LIVESHARE_PROTOCOL_VERSION))
+  url.searchParams.set('capabilities', LIVESHARE_CAPABILITIES.join(','))
+  // The Relay is the authority for the capability, so the owner's switch travels with registration.
+  if (spec.allowsFork === true) url.searchParams.set('allowsFork', '1')
+  if (spec.sessionMode !== undefined) url.searchParams.set('sessionMode', spec.sessionMode)
+  if (spec.ownerProviderId !== undefined && spec.ownerProviderId !== '') {
+    url.searchParams.set('ownerProviderId', spec.ownerProviderId)
+  }
+  if (spec.ownerTenantId !== undefined && spec.ownerTenantId !== '') {
+    url.searchParams.set('ownerTenantId', spec.ownerTenantId)
+  }
+  for (const subject of spec.allowedSubjectIds) {
+    url.searchParams.append('allowedSubjectId', subject)
+  }
+  if (spec.expiresAt !== undefined && spec.expiresAt !== '') {
+    url.searchParams.set('expiresAt', spec.expiresAt)
+  }
+  return url
+}
diff --git a/packages/experimental/liveshare/src/owner-gateway/relay-refusal.ts b/packages/experimental/liveshare/src/owner-gateway/relay-refusal.ts
new file mode 100644
index 0000000000..95293ff9fd
--- /dev/null
+++ b/packages/experimental/liveshare/src/owner-gateway/relay-refusal.ts
@@ -0,0 +1,45 @@
+/**
+ * When a Relay handshake response ends one registration for good.
+ *
+ * The Relay answers a gateway handshake it will not establish with an HTTP status instead of
+ * upgrading. A credential the Relay does not accept (401), one it forbids for this share (403), or a
+ * share it no longer serves (410), or an unsupported protocol (426) ends this registration.
+ * Reconnecting with the same token and protocol reaches the same answer, so the share stays offline and the status becomes its diagnostic
+ * instead of a silent retry. Every other failure — a Relay that is down (5xx), a rate limit, a
+ * timeout, a refused socket — is transient and keeps the ordinary reconnect schedule.
+ */
+
+/** The Relay handshake statuses that end a registration for good. */
+const RELAY_REFUSAL_STATUSES: readonly number[] = [401, 403, 410, 426]
+
+/**
+ * Read one handshake status as a decision about the registration it carried.
+ * @param status HTTP status the Relay answered the gateway handshake with, if it answered.
+ * @returns The refusal to report, or undefined when the failure is worth retrying.
+ */
+export function relayRefusal(status: number | undefined): string | undefined {
+  if (status !== undefined && RELAY_REFUSAL_STATUSES.includes(status)) {
+    return `relay refused registration status=${String(status)}`
+  }
+  return undefined
+}
+
+/** The one form every permanent refusal reaches a Host as; nothing else composes it. */
+const RELAY_REFUSAL_MESSAGE = /^relay refused registration status=(\d+)$/u
+
+/**
+ * Read one reported registration failure as the Relay status that decided it.
+ *
+ * The gateway reports a permanent refusal exactly as `relayRefusal` composes it, and every other
+ * failure it reports — a status it did not refuse with, a dropped socket, a timeout — is worth
+ * another attempt. A Host reading the message can therefore tell the owner to act on this address
+ * instead of promising a retry that reaches the same answer, and can say which status decided it.
+ * @param message - Failure the gateway reported for one registration.
+ * @returns The refusing status, or undefined when the failure is worth retrying.
+ */
+export function relayRefusalStatus(message: string): number | undefined {
+  const match = RELAY_REFUSAL_MESSAGE.exec(message)
+  if (match === null) return undefined
+  const status = Number(match[1])
+  return RELAY_REFUSAL_STATUSES.includes(status) ? status : undefined
+}
diff --git a/packages/experimental/liveshare/src/owner-gateway/retry-backoff.ts b/packages/experimental/liveshare/src/owner-gateway/retry-backoff.ts
new file mode 100644
index 0000000000..89b5e39f41
--- /dev/null
+++ b/packages/experimental/liveshare/src/owner-gateway/retry-backoff.ts
@@ -0,0 +1,46 @@
+/**
+ * Delay schedule for one connection that keeps failing.
+ *
+ * The owner host's worker supervisor and the gateway's per-share Relay socket both reconnect rather
+ * than give up, and both treat a connection that stayed up long enough as healthy, so the failure
+ * after one starts the delays over instead of continuing the previous run's growth. Extracted from
+ * the socket lifecycle so the schedule is deterministic and testable apart from spawning processes.
+ */
+
+/** Progress of one reconnect sequence. */
+export interface RetryBackoff {
+  /** Delay to wait before the next attempt. */
+  readonly delayMs: number
+  /** Attempts since the last stable connection. */
+  readonly attempt: number
+}
+
+/** Schedule of a connection that has not (yet) proven itself stable. */
+export const INITIAL_RETRY_BACKOFF: RetryBackoff = { delayMs: 500, attempt: 0 }
+
+/** Ceiling for the doubling delay: a failing peer is retried, never hammered. */
+export const RETRY_BACKOFF_MAX_MS = 10_000
+
+/**
+ * A connection that stays up this long is healthy, so the next failure starts the delays over.
+ * A peer that replaces the connection right after the handshake keeps the previous backoff instead
+ * of retrying every 500 ms.
+ */
+export const RETRY_STABLE_MS = 30_000
+
+/**
+ * Advance the schedule after one failed attempt.
+ * @param state Backoff of the attempt that just failed.
+ * @returns Schedule the retry starts from: the delay to wait and the state after that attempt.
+ */
+export function retryBackoffNext(state: RetryBackoff): RetryBackoff {
+  return { delayMs: Math.min(state.delayMs * 2, RETRY_BACKOFF_MAX_MS), attempt: state.attempt + 1 }
+}
+
+/**
+ * Schedule for a connection that has proven itself stable.
+ * @returns The schedule's first entry, so the next failure is retried promptly.
+ */
+export function retryBackoffSettled(): RetryBackoff {
+  return INITIAL_RETRY_BACKOFF
+}
diff --git a/packages/experimental/liveshare/src/owner-gateway/worker.ts b/packages/experimental/liveshare/src/owner-gateway/worker.ts
new file mode 100644
index 0000000000..815211d291
--- /dev/null
+++ b/packages/experimental/liveshare/src/owner-gateway/worker.ts
@@ -0,0 +1,327 @@
+/** Owner-side gateway worker: one process multiplexes every share over IPC to the owner host. */
+
+import { WebSocket, type RawData } from 'ws'
+import { relayRefusal } from './relay-refusal.ts'
+import { registrationUrl } from './registration-url.ts'
+import {
+  INITIAL_RETRY_BACKOFF,
+  RETRY_STABLE_MS,
+  retryBackoffNext,
+  retryBackoffSettled,
+  type RetryBackoff,
+} from './retry-backoff.ts'
+import {
+  parseRelayFrame,
+  parseTunnelWorkerCommand,
+  rawText,
+  sendFrame as send,
+  unsupportedFrameRefusal,
+  viewerRequestFields,
+  type RelayFrame,
+  type TunnelShareSpec,
+  type TunnelRegistrationToken,
+  type TunnelWorkerEvent,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { PendingRpc, type PendingRequest } from './pending-rpc.ts'
+
+const HEARTBEAT_INTERVAL_MS = 25_000
+
+/**
+ * Consecutive unanswered heartbeats tolerated before this worker drops its own Relay socket.
+ *
+ * One miss means a busy event loop, not a dead connection: terminating there aborts every in-flight
+ * viewer stream on the share and forces a re-registration, which is the periodic reconnect an owner
+ * would otherwise never see the cause of.
+ */
+const GATEWAY_MAX_MISSED_PONGS = 2
+
+interface GatewayConnection {
+  readonly socket: WebSocket
+  readonly registrationToken: TunnelRegistrationToken
+}
+
+interface GatewayState {
+  readonly registrationToken: TunnelRegistrationToken
+  /** Latest owner intent or committed Relay snapshot, used by the next handshake. */
+  spec: TunnelShareSpec
+  accessVersion: number | undefined
+  gateway: GatewayConnection | undefined
+  heartbeat: ReturnType<typeof setInterval> | undefined
+  retryTimer: ReturnType<typeof setTimeout> | undefined
+  retry: RetryBackoff
+  openedAt: number | undefined
+  stopped: boolean
+}
+
+/** IPC tokens identify requests; socket-local Relay ids never select a Host response. */
+const pendingRpc = new PendingRpc<GatewayConnection>()
+
+/**
+ * Run one owner worker that multiplexes every share over IPC. The worker owns
+ * one outbound Relay socket per share, but one process and one owner DSH.
+ */
+export function runGatewayWorker(): void {
+  const shares = new Map<string, GatewayState>()
+  notifyWorker({ type: 'ready' })
+
+  process.on('message', (value: unknown) => {
+    const command = parseTunnelWorkerCommand(value)
+    if (command === undefined) {
+      console.warn('[liveshare] worker refused one owner command')
+      return
+    }
+    if (command.type === 'share-rpc-response') {
+      const owner = shares.get(command.shareId)?.gateway
+      if (owner?.registrationToken !== command.registrationToken) return
+      const request = pendingRpc.take(command)
+      if (request === undefined) {
+        // The Relay already stopped waiting, this worker restarted, or the answer states an id that
+        // names no single waiting request: the answer has nowhere to go.
+        console.warn(`[liveshare] worker dropped late read response relayId=${String(command.id)}`)
+        return
+      }
+      const gateway = request.owner.socket
+      if (gateway.readyState === WebSocket.OPEN) {
+        const observed = viewerRequestFields(command.body)
+        console.log(
+          `[liveshare] worker read answered share=${request.shareId} relayId=${String(command.id)}`
+          + ` op=${observed.op} streamId=${observed.streamId} status=${String(command.status)}`
+          + ` elapsedMs=${String(Date.now() - request.since)}`,
+        )
+        send(gateway, {
+          type: 'share-rpc-res',
+          id: command.id,
+          status: command.status,
+          ...(command.body === undefined ? {} : { body: command.body }),
+        })
+      } else {
+        // The owner answered, and its gateway is gone: the Relay will time this read out.
+        console.warn(
+          `[liveshare] worker cannot deliver read response share=${request.shareId}`
+          + ` relayId=${String(command.id)} — gateway is not connected`,
+        )
+      }
+      return
+    }
+    if (command.type === 'add-share') addShare(shares, command.share, command.registrationToken)
+    else if (command.type === 'remove-share') {
+      console.warn(`[liveshare] worker dropping one share by owner command share=${command.shareId}`)
+      removeShare(shares, command.shareId)
+    } else {
+      // Every share closes with code 1000 here, which is what an owner-side `client-closed` batch of
+      // gateway closes in the Relay log means; naming it separates a deliberate teardown from a
+      // connection that failed.
+      console.warn(
+        `[liveshare] worker shutting down command=${String((command as { readonly type?: unknown }).type)}`
+        + ` shares=${String(shares.size)}`,
+      )
+      for (const shareId of [...shares.keys()]) removeShare(shares, shareId)
+      process.exit(0)
+    }
+  })
+  process.on('disconnect', () => {
+    console.warn(`[liveshare] worker lost its host connection shares=${String(shares.size)}`)
+    for (const shareId of [...shares.keys()]) removeShare(shares, shareId)
+    process.exit(0)
+  })
+}
+
+function addShare(shares: Map<string, GatewayState>, spec: TunnelShareSpec, registrationToken: TunnelRegistrationToken): void {
+  if (shares.get(spec.shareId)?.registrationToken === registrationToken) return
+  removeShare(shares, spec.shareId)
+  const state: GatewayState = {
+    spec,
+    registrationToken,
+    accessVersion: undefined,
+    gateway: undefined,
+    heartbeat: undefined,
+    retryTimer: undefined,
+    retry: INITIAL_RETRY_BACKOFF,
+    openedAt: undefined,
+    stopped: false,
+  }
+  shares.set(spec.shareId, state)
+  connectShare(shares, state)
+}
+
+function removeShare(shares: Map<string, GatewayState>, shareId: string): void {
+  const state = shares.get(shareId)
+  if (state === undefined) return
+  state.stopped = true
+  if (state.retryTimer !== undefined) clearTimeout(state.retryTimer)
+  clearInterval(state.heartbeat)
+  if (state.gateway !== undefined) clearPendingRpc(state.gateway)
+  state.gateway?.socket.close(1000, 'share removed')
+  shares.delete(shareId)
+}
+
+function connectShare(shares: Map<string, GatewayState>, state: GatewayState): void {
+  const url = registrationUrl(state.spec)
+  const gateway = new WebSocket(url, {
+    headers: {
+      authorization: `Bearer ${state.spec.gatewayToken}`,
+      ...(state.spec.ownerCredential === undefined || state.spec.ownerCredential === ''
+        ? {}
+        : { 'x-liveshare-owner-credential': state.spec.ownerCredential }),
+    },
+  })
+  const connection: GatewayConnection = { socket: gateway, registrationToken: state.registrationToken }
+  state.gateway = connection
+  let awaitingPong = false
+  let missedPongs = 0
+  // A single unanswered ping means this machine or the Relay was briefly busy, not that the
+  // connection is gone. Terminating there drops the share's route, aborts every in-flight viewer
+  // stream, and re-registers the gateway — which is what a periodic `share.reconnect` audit line is.
+  let closeReason = 'unknown'
+  let handshakeStatus: number | undefined
+  state.heartbeat = setInterval(() => {
+    if (gateway.readyState !== WebSocket.OPEN) return
+    if (awaitingPong) {
+      missedPongs += 1
+      if (missedPongs >= GATEWAY_MAX_MISSED_PONGS) {
+        closeReason = `heartbeat-timeout missedPongs=${String(missedPongs)}`
+        gateway.terminate()
+        return
+      }
+      console.warn(
+        `[liveshare] worker heartbeat missed share=${state.spec.shareId} missedPongs=${String(missedPongs)}`,
+      )
+      return
+    }
+    awaitingPong = true
+    gateway.ping()
+  }, HEARTBEAT_INTERVAL_MS)
+
+  gateway.on('pong', () => { awaitingPong = false; missedPongs = 0 })
+  gateway.on('open', () => {
+    if (state.stopped || state.gateway !== connection) return
+    state.openedAt = Date.now()
+    notifyWorker({ type: 'share-connected', registrationToken: state.registrationToken, shareId: state.spec.shareId })
+  })
+  gateway.on('message', (data: RawData) => {
+    // Any traffic proves the peer is alive, so a pong that arrived late does not count as missed.
+    awaitingPong = false
+    missedPongs = 0
+    const text = rawText(data)
+    const frame = parseRelayFrame(text)
+    if (frame !== undefined) {
+      if (!state.stopped && state.gateway === connection) handleGatewayFrame(state, connection, frame)
+      return
+    }
+    // A frame this build cannot serve is answered rather than dropped: silence leaves the Relay
+    // holding the read until its own budget expires, and a peer that is newer than this build then
+    // reaches the reader as a timeout instead of as a version this owner cannot serve.
+    const refusal = unsupportedFrameRefusal(text)
+    console.warn(
+      `[liveshare] worker refused one relay frame share=${state.spec.shareId}`
+      + ` frame=${refusal === undefined ? 'unanswerable' : `status=${String(refusal.status)} relayId=${String(refusal.id)}`}`,
+    )
+    if (refusal !== undefined && !state.stopped && state.gateway === connection) send(gateway, refusal)
+  })
+  gateway.on('close', (code: number, socketReason: Buffer) => {
+    clearPendingRpc(connection)
+    if (state.gateway !== connection) return
+    clearInterval(state.heartbeat)
+    state.gateway = undefined
+    state.accessVersion = undefined
+    if (state.stopped) return
+    console.warn(
+      `[liveshare] worker gateway closed share=${state.spec.shareId} code=${String(code)}`
+      + ` reason=${closeReason} socketReason=${socketReason.toString()} retryMs=${String(state.retry.delayMs)}`,
+    )
+    const refusal = relayRefusal(handshakeStatus)
+    if (refusal !== undefined) {
+      // The Relay decided against this registration, so reconnecting with the same spec reaches the
+      // same answer. The share stops here with the status as its diagnostic; registering it again
+      // (an owner republish) builds a new state and asks the Relay once more.
+      state.stopped = true
+      shares.delete(state.spec.shareId)
+      console.warn(`[liveshare] worker stopped share=${state.spec.shareId} ${refusal}`)
+      return
+    }
+    if (state.openedAt !== undefined && Date.now() - state.openedAt >= RETRY_STABLE_MS) {
+      state.retry = retryBackoffSettled()
+    }
+    state.openedAt = undefined
+    const delayMs = state.retry.delayMs
+    state.retry = retryBackoffNext(state.retry)
+    state.retryTimer = setTimeout(() => { connectShare(shares, state) }, delayMs)
+    notifyWorker({ type: 'share-closed', registrationToken: state.registrationToken, shareId: state.spec.shareId })
+  })
+  gateway.on('error', (error) => {
+    if (state.stopped || state.gateway !== connection) return
+    // A refused handshake arrives here as the socket error ws raises in place of the response, so the
+    // status captured from `unexpected-response` is the diagnostic worth reporting.
+    const answered = handshakeStatus === undefined
+      ? undefined
+      : relayRefusal(handshakeStatus) ?? `relay answered registration status=${String(handshakeStatus)}`
+    const detail = answered ?? (error instanceof Error ? error.message : String(error))
+    closeReason = `gateway-error ${detail}`
+    notifyWorker({ type: 'share-error', registrationToken: state.registrationToken, shareId: state.spec.shareId, message: detail })
+    gateway.terminate()
+  })
+  gateway.on('unexpected-response', (_request, response) => {
+    handshakeStatus = response.statusCode
+    gateway.terminate()
+  })
+}
+
+function handleGatewayFrame(state: GatewayState, connection: GatewayConnection, frame: RelayFrame): void {
+  const shareId = state.spec.shareId
+  switch (frame.type) {
+    case 'share-access-state': {
+      if (state.accessVersion !== undefined && state.accessVersion >= frame.version) return
+      const { expiresAt: _expiresAt, ...retained } = state.spec
+      state.spec = {
+        ...retained,
+        accessMode: frame.accessMode,
+        allowedSubjectIds: frame.allowedSubjectIds,
+        sessionMode: frame.sessionMode,
+        // A Relay that states no switch states it off; the tier does not imply a fork grant.
+        allowsFork: frame.allowsFork === true,
+        ...(frame.expiresAt === undefined ? {} : { expiresAt: frame.expiresAt }),
+      }
+      state.accessVersion = frame.version
+      notifyWorker({ ...frame, registrationToken: state.registrationToken, shareId })
+      return
+    }
+    case 'share-rpc': {
+      const previous = pendingRpc.cancel(connection, frame.id)
+      if (previous !== undefined) notifyCancellation(previous)
+      const request = pendingRpc.add(shareId, frame.id, connection)
+      const observed = viewerRequestFields(frame.body)
+      console.log(
+        `[liveshare] worker read received share=${shareId} relayId=${String(frame.id)}`
+        + ` op=${observed.op} streamId=${observed.streamId}`,
+      )
+      notifyWorker({
+        type: 'share-rpc-request',
+        registrationToken: connection.registrationToken,
+        token: request.token,
+        id: frame.id,
+        shareId,
+        body: frame.body,
+        // The Relay asserted this identity; the owner host acts on it and never on the body.
+        actor: frame.actor,
+      })
+      return
+    }
+    case 'share-rpc-cancel': {
+      const request = pendingRpc.cancel(connection, frame.id)
+      if (request !== undefined) notifyCancellation(request)
+    }
+  }
+}
+
+function notifyWorker(event: TunnelWorkerEvent): void {
+  if (process.send !== undefined) process.send(event)
+}
+
+/** Cancel Host work before forgetting requests on a closed Relay socket. */
+function clearPendingRpc(connection: GatewayConnection): void {
+  for (const request of pendingRpc.clear(connection)) notifyCancellation(request)
+}
+
+function notifyCancellation(request: PendingRequest<GatewayConnection>): void {
+  notifyWorker({ type: 'share-rpc-cancel', registrationToken: request.owner.registrationToken, token: request.token, shareId: request.shareId, id: request.id })
+}
diff --git a/packages/experimental/liveshare/src/owner-identity.ts b/packages/experimental/liveshare/src/owner-identity.ts
new file mode 100644
index 0000000000..3d3d0c83de
--- /dev/null
+++ b/packages/experimental/liveshare/src/owner-identity.ts
@@ -0,0 +1,30 @@
+/** Owner identity status the owner host reports to its own browser, and to no one else. */
+
+export type { ClaimOutcome, OwnerIdentityState, OwnerIdentityStatus } from './share-api-types.ts'
+
+/**
+ * Error code the owner host answers with when a creation request arrives without a verified
+ * identity. The browser turns this into the same "go verify" affordance as an `expired` state.
+ */
+export const OWNER_LOGIN_REQUIRED = 'owner-login-required'
+
+/**
+ * Error code the owner host answers with when the Relay at the effective address does not bind owner
+ * identity. The browser asks the deployment to upgrade instead of offering a verification retry.
+ */
+export const RELAY_UPGRADE_REQUIRED = 'relay-upgrade-required'
+
+/**
+ * Label a verified subject that carries no display name.
+ *
+ * The label comes from the identity itself, so no surface borrows the signed-in viewer's name and
+ * none invents one from an unverified display name. The owner host names the owner a reader sees
+ * with it when the credential carries no display name of its own.
+ * @param subjectId - Verified subject the share belongs to.
+ * @returns The trailing part of the subject, long enough to tell two subjects apart by eye.
+ */
+export function identitySubjectLabel(subjectId: string): string {
+  const trimmed = subjectId.trim()
+  const tail = trimmed.slice(trimmed.lastIndexOf(':') + 1)
+  return tail === '' ? trimmed : tail
+}
diff --git a/packages/experimental/liveshare/src/read-budgets.ts b/packages/experimental/liveshare/src/read-budgets.ts
new file mode 100644
index 0000000000..844d486ff5
--- /dev/null
+++ b/packages/experimental/liveshare/src/read-budgets.ts
@@ -0,0 +1,49 @@
+/**
+ * Read budgets shared by the owner host and the served viewer page.
+ *
+ * One viewer read travels owner host → Relay → page, and each hop may hold it for its own bounded
+ * time. The numbers form one ordering: the owner's hold is the shortest, the Relay gives up before
+ * the page does, and the page's budget stays above both. Inverting it turns a healthy read into an
+ * opaque `signal timed out` in the page instead of the clean answer the inner hop would have sent.
+ */
+
+/**
+ * Longest wait one `stream-next` poll holds before it reports a retryable wait.
+ *
+ * A poll that returns `pending` costs one round trip, so this stays short enough that several polls
+ * fit inside the Relay's budget for the same read.
+ */
+export const STREAM_POLL_HOLD_MS = 10_000
+
+/**
+ * Most stream values one `stream-next` answer carries.
+ *
+ * A page applies one answer per round trip, and one delta per round trip spends a full owner →
+ * Relay → page trip on a stream that is already producing faster than that. Draining what the
+ * stream has queued bounds the cost of a burst without touching the hold a poll uses when nothing
+ * is queued: the limit only stops one answer from growing without bound.
+ */
+export const STREAM_BATCH_MAX = 64
+
+/**
+ * How long one `stream-next` answer waits for a value already queued behind its first one.
+ *
+ * The wait is paid only after a value arrived, and only while the stream keeps answering, so a
+ * stream with nothing queued reports its single value at this cost rather than the poll's hold.
+ */
+export const STREAM_BATCH_WINDOW_MS = 4
+
+/**
+ * Slack a held poll may spend beyond its own hold before the host calls itself the slow hop.
+ *
+ * The hold is a timer race, so a poll answering later than the hold plus this much means something
+ * other than the wait itself delayed the answer — which is the fact a reader needs to tell this
+ * host apart from the hops around it.
+ */
+export const STREAM_POLL_SLACK_MS = 2_000
+
+/**
+ * Per-read budget of the viewer page, which must exceed every budget the read can meet on its way
+ * out: the owner's hold above and the Relay's own answer for a stuck read.
+ */
+export const VIEWER_READ_TIMEOUT_MS = 25_000
diff --git a/packages/experimental/liveshare/src/share-api-types.ts b/packages/experimental/liveshare/src/share-api-types.ts
new file mode 100644
index 0000000000..932c5edc50
--- /dev/null
+++ b/packages/experimental/liveshare/src/share-api-types.ts
@@ -0,0 +1,299 @@
+/**
+ * Owner-facing share records shared by the Host routes and the Typert Remote contract.
+ *
+ * Every field is the JSON the owner browser already received from the same-origin routes, so the
+ * Client face can import this module for the same records instead of restating them.
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/share-api-types
+ */
+
+import type { JsonValue } from '@deepseek-ai/dsh-util-values'
+import type {} from '@deepseek-ai/dsh-typert-protocol'
+
+/**
+ * Whether this host currently holds an owner credential the Relay will accept.
+ *
+ * `relay-unsupported` means the Relay at this address predates identity binding: the host refuses to
+ * create shares there instead of publishing one anonymously, and no amount of verifying locally
+ * would help until the deployment is upgraded.
+ */
+export type OwnerIdentityState = 'verified' | 'expired' | 'unverified' | 'relay-unsupported'
+
+/** Result of binding this host's existing shares to its verified identity. */
+export interface ClaimOutcome {
+  /** Shares the Relay bound to this identity. */
+  readonly claimed: number
+  /** Shares already bound to this identity, so the Relay left them untouched. */
+  readonly skipped: number
+}
+
+/** One owner identity report. The credential itself is never part of it. */
+export interface OwnerIdentityStatus {
+  readonly state: OwnerIdentityState
+  /**
+   * Relay base URL the credential is bound to. A host keeps one credential per Relay address and
+   * never presents it to another, so a viewer of this field compares it with the active address.
+   */
+  readonly relay: string
+  /** Provider display name, when the credential carries one. */
+  readonly displayName?: string
+  /** Verified subject id, which a client may show as the identity label. */
+  readonly subjectId?: string
+  /** Provider-issued avatar URL the credential carried, when it carried one. */
+  readonly avatarUrl?: string
+  /** ISO expiry of the credential currently held. */
+  readonly expiresAt?: string
+  /** True when this report followed a renewal that pushed the expiry out. */
+  readonly renewed?: boolean
+  /** Automatic claim result, present once this host has run a claim pass. */
+  readonly claim?: ClaimOutcome
+}
+
+/** One viewer identity selected by a share's ACL, resolved from its canonical key. */
+export interface ShareAccessSelection {
+  readonly providerId: string
+  readonly tenantId: string
+  readonly subjectId: string
+  readonly identityKey: string
+}
+
+/** Confirmed ACL scope of one share, as the owner panel reads it back. */
+export interface ShareAccess {
+  readonly mode: 'open' | 'selected'
+  readonly selected: readonly ShareAccessSelection[]
+  readonly deploymentAllowedSubjectIds: readonly string[]
+  readonly shareAllowedSubjectIds: readonly string[]
+  readonly broadenedByDeploymentSubjects: boolean
+  readonly identityKeyAcl: true
+}
+
+/** One plugin's endpoints offered to or selected for a share's viewers. */
+export interface ShareCapabilityGroup {
+  /** Declaring plugin's package name. */
+  readonly plugin: string
+  /** Readable endpoints that plugin offers. */
+  readonly readable: readonly string[]
+  /** Writable endpoints that plugin offers. */
+  readonly writable: readonly string[]
+}
+
+/** One owner-created share as the management panel lists it. */
+export interface OwnerShareView {
+  readonly shareId: string
+  readonly sessionId: string
+  readonly sessionTitle: string
+  readonly link: string
+  readonly createdAt: string
+  /** ISO time after which the Relay denies viewers; absent means the share never expires. */
+  readonly expiresAt?: string
+  readonly allowsFork: boolean
+  readonly sessionMode: 'view' | 'write'
+  /** Plugin endpoints this share exposes; an empty list means none. */
+  readonly viewerCapabilities: readonly ShareCapabilityGroup[]
+  readonly online: boolean
+  /** Confirmed ACL scope, absent on records written before it was recorded. */
+  readonly access?: ShareAccess
+}
+
+/** The owner's share list. */
+export interface OwnerShareList {
+  readonly shares: readonly OwnerShareView[]
+}
+
+/** One share-creation request. */
+export interface CreateShareRequest {
+  readonly sessionId: string
+  /** Display title; the Session id is used when this is absent or empty. */
+  readonly sessionTitle?: string
+  /**
+   * Access mode to store with the share. Legacy and direct-API use only: the shipped Share dialog
+   * creates `open` shares and sends no access mode, while stored `selected` records and callers that
+   * invoke this Remote directly still set it.
+   */
+  readonly accessMode?: 'open' | 'selected'
+  /** Lifetime in minutes; absent means the share never expires. */
+  readonly ttlMinutes?: number
+  /**
+   * Viewers named on a `selected` share, stored beside the deployment's allowed subjects. Legacy and
+   * direct-API use only: the shipped Share dialog creates `open` shares and sends no subjects.
+   */
+  readonly allowedSubjectIds?: readonly string[]
+  readonly allowsFork?: boolean
+  readonly sessionMode?: 'view' | 'write'
+}
+
+/** One created share, echoing the values it was stored with. */
+export interface CreatedShare {
+  readonly link: string
+  readonly shareId: string
+  readonly sessionId: string
+  readonly sessionMode: 'view' | 'write'
+  readonly access: ShareAccess
+}
+
+/** One stop request. */
+export interface StopShareRequest {
+  readonly shareId: string
+}
+
+/** One stopped share; `unreachable` means the Relay row is still owed. */
+export interface StopShareResult {
+  readonly ok: true
+  readonly relay?: 'unreachable'
+}
+
+/** One share permission update; every field may be omitted and keeps its stored value. */
+export interface UpdateSharePermissionsRequest {
+  readonly shareId: string
+  readonly sessionMode?: 'view' | 'write'
+  readonly allowsFork?: boolean
+  /** New lifetime in minutes; null clears the deadline and means the share never expires. */
+  readonly ttlMinutes?: number | null
+}
+
+/** Permissions one share now carries. */
+export interface SharePermissions {
+  readonly shareId: string
+  readonly sessionMode: 'view' | 'write'
+  readonly allowsFork: boolean
+  /** New deadline; absent means the share never expires. */
+  readonly expiresAt?: string
+}
+
+/** One share capability update; absent capabilities clear the selection. */
+export interface SetShareCapabilitiesRequest {
+  readonly shareId: string
+  readonly capabilities?: readonly ShareCapabilityGroup[]
+}
+
+/** One share's stored capability selection. */
+export interface ShareCapabilities {
+  readonly shareId: string
+  readonly viewerCapabilities: readonly ShareCapabilityGroup[]
+}
+
+/** The endpoints plugins currently offer to share viewers. */
+export interface ShareCapabilityOffers {
+  readonly capabilities: readonly ShareCapabilityGroup[]
+}
+
+/**
+ * The address the owner saved in the Share dialog and the address new shares publish to.
+ *
+ * The owner-owned value is the only source: this build has no deployment-configured fallback, so both
+ * fields are absent until the owner saves an address and after the owner clears it again.
+ */
+export interface OwnerRelayState {
+  /**
+   * Address a deployment configures directly.
+   *
+   * Retained so an older Host that still reports one can be read; this build never sets it, because the
+   * owner's saved address is the only one in force.
+   */
+  readonly configured?: string
+  /** Address the owner saved. */
+  readonly override?: string
+  /** Address new shares publish to; absent while no address is saved. */
+  readonly effective?: string
+}
+
+/** One Relay address selection; null clears the override. */
+export interface SetRelayRequest {
+  readonly relayUrl: string | null
+}
+
+/** One owner identity read, optionally for another Relay address. */
+export interface OwnerIdentityRequest {
+  readonly relay?: string
+}
+
+/** Anonymous connectivity check of the effective Relay. */
+export interface RelayConnectivityView {
+  readonly ok: boolean
+  /** True when the address answered at all, including with a refusal an anonymous request gets. */
+  readonly httpReachable: boolean
+  readonly blocking: boolean
+  readonly error?: string
+}
+
+/** One owner identity read before a publish check. */
+export interface TestPublishRequest {
+  readonly sessionId: string
+}
+
+/** Permission check of one throwaway registration. */
+export interface RelayPublishView {
+  readonly ok: boolean
+  readonly blocking: boolean
+  readonly error?: string
+}
+
+/** One audit read for one share. */
+export interface ShareAuditRequest {
+  readonly shareId: string
+}
+
+/** One durable Relay audit entry. */
+export interface ShareAuditEntryView {
+  readonly id: string
+  readonly action: string
+  readonly createdAt: string
+  readonly actor?: string
+  readonly detail?: JsonValue
+}
+
+/** The Relay's durable audit trail for one share. */
+export interface ShareAudit {
+  readonly events: readonly ShareAuditEntryView[]
+}
+
+declare module '@deepseek-ai/dsh-typert-protocol' {
+  interface RemoteErrorDetailsMap {
+    /** No share this host publishes carries the requested id. */
+    'liveshareShares/share-not-found': { readonly shareId: string }
+    /** A share-writing request named no share. */
+    'liveshareShares/missing-share-id': Record<string, never>
+    /** A creation or publish check named no Session. */
+    'liveshareShares/missing-session-id': Record<string, never>
+    /** A permission update named neither the tier nor the fork switch. */
+    'liveshareShares/missing-permission': Record<string, never>
+    /** The requested access mode is not one this build stores. */
+    'liveshareShares/invalid-access-mode': Record<string, never>
+    /** The requested lifetime is not a positive safe-integer count of minutes within the ceiling. */
+    'liveshareShares/invalid-ttl': Record<string, never>
+    /** The requested fork switch is not a boolean. */
+    'liveshareShares/invalid-allows-fork': Record<string, never>
+    /** The requested tier is not one this build drives. */
+    'liveshareShares/invalid-session-mode': Record<string, never>
+    /** The submitted capability selection is not a list of plugin groups. */
+    'liveshareShares/invalid-capabilities': Record<string, never>
+    /** The requested Relay address is not a usable base URL. */
+    'liveshareShares/invalid-relay': { readonly relay: string }
+    /** The posted Relay address is neither null nor a string, or does not normalize. */
+    'liveshareShares/invalid-relay-url': Record<string, never>
+    /** No Liveshare server address is saved, so the request has nowhere to publish or probe. */
+    'liveshareShares/relay-url-required': Record<string, never>
+    /** Creating a share requires a verified owner credential at the effective Relay. */
+    'liveshareShares/owner-login-required': { readonly identity: OwnerIdentityStatus }
+    /** The effective Relay predates owner identity binding, so a verified credential cannot help. */
+    'liveshareShares/relay-upgrade-required': { readonly identity: OwnerIdentityStatus }
+    /** The Relay did not accept the registration this host attempted. */
+    'liveshareShares/relay-unavailable': { readonly relay: string; readonly reason?: string }
+    /** The owner state file could not be written; the previous record is still in force. */
+    'liveshareShares/owner-state-unavailable': Record<string, never>
+    /** A submitted capability names a plugin that offers no viewer endpoints. */
+    'liveshareShares/unknown-plugin': { readonly plugin: string }
+    /** A submitted capability names an endpoint the plugin does not offer under that kind. */
+    'liveshareShares/endpoint-not-offered': {
+      readonly plugin: string
+      readonly kind: 'readable' | 'writable'
+      readonly endpoint: string
+    }
+    /** The Relay's audit trail could not be read; `body` carries a relay answer unchanged. */
+    'liveshareShares/audit-unavailable': {
+      readonly relay: string
+      readonly status?: number
+      readonly contentType?: string
+      readonly body?: string
+    }
+  }
+}
diff --git a/packages/experimental/liveshare/src/viewer-channel.ts b/packages/experimental/liveshare/src/viewer-channel.ts
new file mode 100644
index 0000000000..927dca6b1c
--- /dev/null
+++ b/packages/experimental/liveshare/src/viewer-channel.ts
@@ -0,0 +1,172 @@
+/**
+ * Viewer read channel: one request the Relay forwards unread and the owner's answer to it.
+ *
+ * The viewer page speaks this channel instead of the owner's HTTP API, so the Relay stays
+ * ignorant of DSH endpoints and payloads. Both halves of the package import these types; the
+ * Relay only moves the encoded values.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/src/viewer-channel
+ */
+
+/**
+ * Page global the Relay's carrier installs on a viewer page. The carrier writes the same name in
+ * `@deepseek-ai/dsh-experimental-liveshare-protocol`; it is restated here because a client bundle may
+ * not import that package's values.
+ */
+export const LIVESHARE_VIEWER_GLOBAL = '__DSH_LIVESHARE_VIEWER__'
+
+/** One unary Host RPC the viewer asks the owner to perform. */
+export interface ViewerCallRequest {
+  readonly op: 'call'
+  /** Absolute Connection channel path the client posted to, such as `/api/session/page`. */
+  readonly path: string
+  /** Client request envelope the owner's gateway dispatch reads. */
+  readonly body: unknown
+}
+
+/** Open one Host stream the viewer consumes through repeated polls. */
+export interface ViewerStreamOpenRequest {
+  readonly op: 'stream-open'
+  /** Viewer-minted stream identity, unique within one share. */
+  readonly id: number
+  /** Canonical Remote endpoint or gateway-owned stream name. */
+  readonly endpoint: string
+  /** Decoded carrier payload for that stream. */
+  readonly payload: unknown
+}
+
+/** One poll for the next value of an open stream. */
+export interface ViewerStreamNextRequest {
+  readonly op: 'stream-next'
+  readonly id: number
+}
+
+/** Release one open stream when its consumer stops. */
+export interface ViewerStreamCancelRequest {
+  readonly op: 'stream-cancel'
+  readonly id: number
+}
+
+/**
+ * Read one resource of the owner's served page: the rendered index, a shell asset, or a client
+ * plugin bundle. The Relay serves the decoded answer as that path's response.
+ */
+export interface ViewerAssetRequest {
+  readonly op: 'asset'
+  /** Page-relative path and query without a leading slash: `''`, `index.html`, `assets/...`, or `plugins/...`. */
+  readonly path: string
+}
+
+/** Owner answer body for one {@link ViewerAssetRequest} with status 200. */
+export interface ViewerAssetBody {
+  readonly contentType: string
+  /** Resource bytes, base64-encoded so the answer stays JSON on every hop. */
+  readonly base64: string
+}
+
+/** Every request the viewer sends through the Relay to its owner. */
+export type ViewerRequest =
+  | ViewerCallRequest
+  | ViewerStreamOpenRequest
+  | ViewerStreamNextRequest
+  | ViewerStreamCancelRequest
+  | ViewerAssetRequest
+
+/** One value of an open stream, or its end. */
+export interface ViewerStreamValue {
+  /** Values one answer carries, in stream order; a Host that answers one at a time sends `value`. */
+  readonly values?: readonly unknown[]
+  readonly value?: unknown
+  readonly end?: true
+  /** Largest wait the owner honoured, so the viewer can poll again instead of failing. */
+  readonly pending?: true
+  readonly failure?: { readonly code: string; readonly message: string; readonly details: object }
+}
+
+/** Owner answer for one viewer request; the Relay writes status and body back unchanged. */
+export interface ViewerAnswer {
+  readonly status: number
+  readonly body: unknown
+}
+
+/**
+ * Refusal code for an endpoint a share reader may not call: the reason the `share-viewer` remote access
+ * policy gives, and the code of the reader's own refusal of a stream another identity opened.
+ */
+export const VIEWER_READ_ONLY_CODE = 'liveshare/read-only'
+
+/**
+ * Build the owner's refusal answer for one request the reader handler refuses itself.
+ * @param endpoint - Refused endpoint, stream name, or stream operation.
+ * @returns A 403 answer carrying an ordinary Connection failure result.
+ */
+export function viewerReadOnlyAnswer(endpoint: string): ViewerAnswer {
+  return {
+    status: 403,
+    body: {
+      ok: false,
+      error: {
+        code: VIEWER_READ_ONLY_CODE,
+        message: `liveshare: ${endpoint} is not readable through a share`,
+        details: {},
+      },
+    },
+  }
+}
+
+/**
+ * Validate one decoded viewer request.
+ * @param value Decoded JSON body the Relay forwarded.
+ * @returns The request, or undefined when the body is not one.
+ */
+export function parseViewerRequest(value: unknown): ViewerRequest | undefined {
+  if (!isRecord(value)) return undefined
+  switch (value.op) {
+    case 'call':
+      return typeof value.path === 'string' && value.path.startsWith('/') && value.body !== undefined
+        ? { op: 'call', path: value.path, body: value.body }
+        : undefined
+    case 'stream-open': {
+      const id = streamId(value.id)
+      if (id === undefined || typeof value.endpoint !== 'string' || value.endpoint === '') return undefined
+      if (value.payload === undefined) return undefined
+      return { op: 'stream-open', id, endpoint: value.endpoint, payload: value.payload }
+    }
+    case 'stream-next': {
+      const id = streamId(value.id)
+      return id === undefined ? undefined : { op: 'stream-next', id }
+    }
+    case 'stream-cancel': {
+      const id = streamId(value.id)
+      return id === undefined ? undefined : { op: 'stream-cancel', id }
+    }
+    case 'asset':
+      return typeof value.path === 'string' ? { op: 'asset', path: value.path } : undefined
+    default:
+      return undefined
+  }
+}
+
+function streamId(value: unknown): number | undefined {
+  return Number.isSafeInteger(value) && Number(value) > 0 ? Number(value) : undefined
+}
+
+/**
+ * Read the request object one envelope addresses.
+ *
+ * The client writes the same request in two shapes — a unary envelope carrying `payload`, or a
+ * stream payload whose `args.request` holds it — and both faces of the channel have to find the
+ * Session it names. The unwrapping lives beside the request types so the two faces cannot drift.
+ * @param envelope - Client request envelope, or one stream payload carrying `args.request`.
+ * @returns The innermost request record, or undefined when the value carries none.
+ */
+export function viewerRequestTarget(envelope: unknown): Record<string, unknown> | undefined {
+  if (!isRecord(envelope)) return undefined
+  const payload = isRecord(envelope.payload) ? envelope.payload : envelope
+  const args = isRecord(payload.args) ? payload.args : undefined
+  return args !== undefined && isRecord(args.request) ? args.request : payload
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === 'object' && value !== null && !Array.isArray(value)
+}
diff --git a/packages/experimental/liveshare/src/viewer-declarations.ts b/packages/experimental/liveshare/src/viewer-declarations.ts
new file mode 100644
index 0000000000..e491d18a25
--- /dev/null
+++ b/packages/experimental/liveshare/src/viewer-declarations.ts
@@ -0,0 +1,27 @@
+/**
+ * The bundle's declaration-surface entry: it provides the capability surface plugins offer viewer endpoints
+ * through, before any part of the share host exists.
+ *
+ * The share host's own load waits for a Relay connection, which arrives after the plugins that offer viewer
+ * endpoints have loaded; a surface provided there would appear too late for them to register against. This
+ * entry requires nothing, so it activates in the first load batch, and the share host reads the same service
+ * and subscribes to it when it starts.
+ * @module @deepseek-ai/dsh-experimental-liveshare/viewer-declarations
+ */
+
+import type { Context } from '@deepseek-ai/cordis'
+import { ViewerDeclarations } from './host/viewer-declarations.ts'
+
+/** Stable Cordis plugin name of the declaration-surface entry. */
+export const name = 'liveshare-viewer-declarations'
+
+/**
+ * Provide the declaration surface on the bundle's own context.
+ *
+ * The service belongs to this entry's fiber, so it lives exactly as long as the entry does and is gone with
+ * a reload of the composition.
+ * @param ctx - The entry's context; the surface goes away with its fiber.
+ */
+export function apply(ctx: Context): void {
+  new ViewerDeclarations(ctx)
+}
diff --git a/packages/experimental/liveshare/tests/client-apply.client.spec.tsx b/packages/experimental/liveshare/tests/client-apply.client.spec.tsx
new file mode 100644
index 0000000000..7952dbed45
--- /dev/null
+++ b/packages/experimental/liveshare/tests/client-apply.client.spec.tsx
@@ -0,0 +1,129 @@
+import { Context, FiberState, type Fiber } from '@deepseek-ai/cordis'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { SlotRegistry } from '@deepseek-ai/dsh-client-ui-renderer/client'
+import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { LiveshareShareAction } from '../src/client/ShareAction.tsx'
+import { apply, inject } from '../src/client/index.ts'
+import { openManagedSession } from '../src/client/share-navigation.ts'
+import { SharedSessionOrigin } from '../src/client/user-origin.tsx'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+afterEach(() => { vi.unstubAllGlobals() })
+
+function declare(slots: SlotRegistry): () => void {
+  return slots.register({
+    name: 'root',
+    children: {
+      'conversation.session.header.utilities': { kind: 'list', scope: 'session' },
+      'conversation.chat.user.before': { kind: 'chain', scope: 'session' },
+    },
+  } as never, () => null)
+}
+
+async function bench() {
+  const ctx = new Context()
+  await ctx.plugin(SlotRegistry).await()
+  const slots = ctx.get('slots') as SlotRegistry
+  const declaration = declare(slots)
+  ctx.provide('locale', new LocaleRuntime(ctx))
+  const mounted: unknown[] = []
+  // The namespace the generated contribution mounts; the header action reads it through `inject`.
+  const shares = { marker: 'liveshareShares' }
+  ctx.provide('remote', {
+    $mount: async (contribution: unknown) => {
+      mounted.push(contribution)
+      ctx.provide('remote.liveshareShares', shares as never)
+      return async () => {}
+    },
+    liveshareShares: shares,
+  } as never)
+  const fiber = ctx.plugin({ inject: [...inject], apply })
+  await fiber.await()
+  return { slots, declaration, fiber, mounted, shares }
+}
+
+describe('Liveshare browser plugin', () => {
+  it('registers the shared-session origin seat and one Session Header action', async () => {
+    const browser = await bench()
+    expect(inject).toEqual(['slots', 'locale', 'remote'])
+    expect(browser.mounted).toHaveLength(1)
+    const entry = browser.slots.entries('conversation.session.header.utilities')[0]
+    expect(entry?.component).toBe(LiveshareShareAction)
+    expect(entry?.options).toMatchObject({ id: 'liveshare-share' })
+    // The action's injected props carry the owner Remote namespace it addresses every call through.
+    expect((entry?.inject as (() => unknown) | undefined)?.()).toEqual({ shares: browser.shares })
+
+    // The attribution is a chain entry in Chat's before-row seat, not a replacement of its user cell.
+    const origin = browser.slots.entries('conversation.chat.user.before')[0]
+    expect(origin?.component).toBe(SharedSessionOrigin)
+    expect(origin?.locale).toBe('liveshare')
+    expect(origin?.select).toEqual(expect.any(Function))
+    expect(browser.slots.entriesOfSlot('conversation.chat.user.before').map(occupant => occupant.component))
+      .toEqual([SharedSessionOrigin])
+    expect(browser.slots.entries('conversation.chat.node')).toHaveLength(0)
+
+    await browser.fiber.dispose()
+    expect(browser.slots.entries('conversation.session.header.utilities')).toHaveLength(0)
+    expect(browser.slots.entries('conversation.chat.user.before')).toHaveLength(0)
+  })
+
+  it('re-registers after the declaring origin slot collapses and returns', async () => {
+    const browser = await bench()
+    browser.declaration()
+    expect(browser.slots.entries('conversation.session.header.utilities')).toHaveLength(0)
+    expect(browser.slots.entries('conversation.chat.user.before')).toHaveLength(0)
+    const redeclare = declare(browser.slots)
+    await Promise.resolve()
+    expect(browser.slots.entries('conversation.session.header.utilities')[0]?.component)
+      .toBe(LiveshareShareAction)
+    expect(browser.slots.entries('conversation.chat.user.before')).toHaveLength(1)
+    redeclare()
+    await browser.fiber.dispose()
+  })
+
+  it('binds workspace navigation for the share manager', async () => {
+    const ctx = new Context()
+    await ctx.plugin(SlotRegistry).await()
+    const declaration = declare(ctx.get('slots') as SlotRegistry)
+    ctx.provide('locale', new LocaleRuntime(ctx))
+    ctx.provide('remote', { $mount: async () => {} } as never)
+    const openSession = vi.fn()
+    ctx.provide('uiWorkspace', { openSession } as never)
+
+    const dispose = await apply(ctx)
+    openManagedSession('target-session')
+    expect(openSession).toHaveBeenCalledWith('target-session')
+    await dispose()
+    openManagedSession('later-session')
+    expect(openSession).toHaveBeenCalledTimes(1)
+    declaration()
+    await ctx.fiber.dispose()
+  })
+
+  it('disposes the carrier fiber it created for the owner Remote', async () => {
+    const ctx = new Context()
+    await ctx.plugin(SlotRegistry).await()
+    const declaration = declare(ctx.get('slots') as SlotRegistry)
+    ctx.provide('locale', new LocaleRuntime(ctx))
+    ctx.provide('remote', { $mount: async () => {} } as never)
+    const created: Fiber[] = []
+    ctx.on('internal/plugin', (fiber) => { created.push(fiber) })
+
+    const dispose = await apply(ctx)
+    // The face owns the origin registration, the Remote carrier, and the namespace-injected header child.
+    expect(created).toHaveLength(2)
+    expect(ctx.slots.entries('conversation.chat.user.before')).toHaveLength(1)
+    await dispose()
+
+    // The returned disposer releases the carrier; the origin registration remains with the face.
+    expect(created.filter(fiber => fiber.state === FiberState.ACTIVE)).toHaveLength(0)
+    expect(ctx.slots.entries('conversation.chat.user.before')).toHaveLength(1)
+    declaration()
+    expect(ctx.slots.entries('conversation.chat.user.before')).toHaveLength(0)
+    await ctx.fiber.dispose()
+    for (const fiber of created) expect(fiber.state).toBe(FiberState.DISPOSED)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/client-face.client.spec.ts b/packages/experimental/liveshare/tests/client-face.client.spec.ts
new file mode 100644
index 0000000000..a89df8d25c
--- /dev/null
+++ b/packages/experimental/liveshare/tests/client-face.client.spec.ts
@@ -0,0 +1,110 @@
+// @vitest-environment jsdom
+/** Which half of the Liveshare client face mounts: the owner's Share action, or the viewer page surfaces. */
+
+import { Context } from '@deepseek-ai/cordis'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import * as liveshare from '../src/client/index.ts'
+import * as viewerBrand from '../src/client/viewer-brand.tsx'
+import * as viewerModel from '../src/client/viewer-model.tsx'
+import * as viewerPermission from '../src/client/viewer-permission.tsx'
+import * as viewerSession from '../src/client/viewer-session-plugin.ts'
+import * as viewerSessionRow from '../src/client/viewer-session-row.tsx'
+import * as viewerSharePath from '../src/client/viewer-share-path.tsx'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+const VIEWER_PLUGINS = [
+  viewerSession, viewerBrand, viewerModel, viewerPermission, viewerSessionRow, viewerSharePath,
+]
+
+afterEach(() => {
+  Reflect.deleteProperty(globalThis, '__DSH_LIVESHARE_VIEWER__')
+})
+
+/**
+ * Mount the client face over recording slot and locale services.
+ * @returns The bench root, the face's fiber, the slot registrations, and the dictionary releases.
+ */
+async function mountFace() {
+  const ctx = new Context()
+  const registered: {
+    readonly name: string
+    readonly id?: string
+    readonly key?: string
+    readonly locale?: string
+  }[] = []
+  const dictionaryReleased = vi.fn()
+  ctx.provide('slots', {
+    inject: (_name: string, register: () => () => void) => register(),
+    register: (entry: { readonly name: string; readonly id?: string; readonly key?: string; readonly locale?: string }) => {
+      registered.push(entry)
+      return () => {}
+    },
+  } as never)
+  ctx.provide('locale', { register: () => dictionaryReleased } as never)
+  let mounts = 0
+  const shares = { marker: 'liveshareShares' }
+  ctx.provide('remote', {
+    $mount: async () => {
+      mounts += 1
+      ctx.provide('remote.liveshareShares', shares as never)
+      return async () => {}
+    },
+    liveshareShares: shares,
+  } as never)
+  const fiber = ctx.plugin(liveshare)
+  await fiber.await()
+  return { ctx, fiber, registered, dictionaryReleased, mounts: () => mounts }
+}
+
+describe('liveshare client face', () => {
+  it('registers the owner Share action and mounts no viewer surface on the owner page', async () => {
+    const { ctx, fiber, registered, dictionaryReleased, mounts } = await mountFace()
+    const origin = registered.filter(entry => entry.name === 'conversation.chat.user.before')
+    expect(origin).toHaveLength(1)
+    expect(origin[0]).toMatchObject({ name: 'conversation.chat.user.before', locale: 'liveshare' })
+    expect((origin[0] as { select?: unknown } | undefined)?.select).toBeTypeOf('function')
+    expect(registered.filter(entry => entry.name === 'conversation.chat.node')).toEqual([])
+    expect(registered.filter(entry => entry.name === 'conversation.session.header.utilities'))
+      .toEqual([expect.objectContaining({ id: 'liveshare-share' })])
+    for (const plugin of VIEWER_PLUGINS) expect(ctx.registry.has(plugin)).toBe(false)
+    // The owner page mounts the share-management Remote exactly once.
+    expect(mounts()).toBe(1)
+    await fiber.dispose()
+    expect(dictionaryReleased).toHaveBeenCalledOnce()
+  })
+
+  it('mounts the viewer surfaces and registers no Share action on a viewer page', async () => {
+    Reflect.set(globalThis, '__DSH_LIVESHARE_VIEWER__', { basePath: '', shareId: 'share-1', sessionId: 'fx-alpha' })
+    const { ctx, fiber, registered, mounts } = await mountFace()
+    // The viewer face contributes the seats whose only service is the slot registry; the owner's own
+    // header action is not among them.
+    const origin = registered.filter(entry => entry.name === 'conversation.chat.user.before')
+    expect(origin).toHaveLength(1)
+    expect(origin[0]).toMatchObject({ name: 'conversation.chat.user.before', locale: 'liveshare' })
+    expect((origin[0] as { select?: unknown } | undefined)?.select).toBeTypeOf('function')
+    expect(registered.filter(entry => entry.name === 'conversation.chat.node')).toEqual([])
+    expect(registered.filter(entry => entry.name === 'conversation.input.permission'))
+      .toEqual([expect.objectContaining({ name: 'conversation.input.permission' })])
+    for (const plugin of VIEWER_PLUGINS) expect(ctx.registry.has(plugin)).toBe(true)
+    // A viewer page never mounts the owner Remote: its Peer is refused every management method.
+    expect(mounts()).toBe(0)
+    await fiber.dispose()
+    for (const plugin of VIEWER_PLUGINS) expect(ctx.registry.has(plugin)).toBe(false)
+  })
+})
+
+describe('Liveshare page constants', () => {
+  it('names the same carrier global the protocol package writes', async () => {
+    const protocol = await import('../../liveshare-protocol/src/viewer-carrier.ts')
+    const channel = await import('../src/viewer-channel.ts')
+    expect(channel.LIVESHARE_VIEWER_GLOBAL).toBe(protocol.LIVESHARE_VIEWER_GLOBAL)
+    protocol.installViewerCarrier({ basePath: '', shareId: 's', sessionId: 'a', readTimeoutMs: 1 })
+    const page = globalThis as { __DSH_LIVESHARE_VIEWER__?: unknown; __DSH_TRANSPORT__?: unknown }
+    expect((globalThis as Record<string, unknown>)[channel.LIVESHARE_VIEWER_GLOBAL])
+      .toEqual({ basePath: '', shareId: 's', sessionId: 'a' })
+    delete page.__DSH_LIVESHARE_VIEWER__
+    delete page.__DSH_TRANSPORT__
+  })
+})
diff --git a/packages/experimental/liveshare/tests/debug-reads-switch.spec.ts b/packages/experimental/liveshare/tests/debug-reads-switch.spec.ts
new file mode 100644
index 0000000000..b2a36ac67c
--- /dev/null
+++ b/packages/experimental/liveshare/tests/debug-reads-switch.spec.ts
@@ -0,0 +1,90 @@
+/**
+ * `LIVESHARE_DEBUG_READS` on the owner host: the per-read lines of the viewer-read service are on for
+ * exactly the value `1`, and the reads themselves behave identically either way.
+ *
+ * The viewer-read service writes a line for each stream it opens, each poll of a stream it no longer
+ * holds, and each cancel it accepts. Those lines are the only owner-side record that a reader's stream
+ * was opened or released, so this pins that the switch gates every one of them — and that a value the
+ * service does not recognize leaves the reads working rather than throwing or refusing.
+ */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { createViewerReadService, type ViewerReadDeps } from '../src/host/viewer-read.ts'
+import { READER, readerConnection } from './viewer-read-peers.ts'
+
+const SHARE = 'share-debug-reads'
+const OPENED_STREAM = 1
+const MISSING_STREAM = 99
+
+/** Values the switch can carry, and how many gated lines each one must produce. */
+const SWITCH_CASES = [
+  { name: 'the documented value 1', value: '1', gatedLines: 3 },
+  { name: 'an unset variable', value: undefined, gatedLines: 0 },
+  { name: 'an empty value', value: '', gatedLines: 0 },
+  { name: 'a zero', value: '0', gatedLines: 0 },
+  { name: 'a boolean word', value: 'true', gatedLines: 0 },
+  { name: 'a padded one', value: ' 1', gatedLines: 0 },
+] as const
+
+/** The three lines the switch gates, in the order this file provokes them. */
+const GATED_LINES = [
+  `[liveshare] viewer stream open share=${SHARE} streamId=${String(OPENED_STREAM)} endpoint=session/follow`,
+  `[liveshare] viewer stream missing share=${SHARE} streamId=${String(MISSING_STREAM)}`,
+  `[liveshare] viewer stream cancel share=${SHARE} streamId=${String(OPENED_STREAM)}`,
+] as const
+
+/** A gateway whose one stream yields a single value and then ends. */
+function singleValueGateway(): NonNullable<ViewerReadDeps['gateway']> {
+  return {
+    wireStream: {
+      async open(): Promise<AsyncIterable<unknown>> {
+        return (async function* () { yield { seq: 0 } })()
+      },
+      failure(error: unknown): { readonly code: string; readonly message: string; readonly details: object } {
+        return { code: String(error), message: String(error), details: {} }
+      },
+    },
+  }
+}
+
+afterEach(() => { vi.restoreAllMocks() })
+
+describe('owner LIVESHARE_DEBUG_READS switch', () => {
+  it.each(SWITCH_CASES)('logs the gated viewer-read lines for $name', async ({ value, gatedLines }) => {
+    const previous = process.env.LIVESHARE_DEBUG_READS
+    const logs: string[] = []
+    vi.spyOn(console, 'log').mockImplementation((...args: unknown[]) => { logs.push(args.map(String).join(' ')) })
+    if (value === undefined) delete process.env.LIVESHARE_DEBUG_READS
+    else process.env.LIVESHARE_DEBUG_READS = value
+    const read = createViewerReadService({
+      connection: readerConnection().connection,
+      gateway: singleValueGateway(),
+      sharedSessionId: () => 'session-1',
+    })
+    try {
+      const opened = await read.answer(SHARE, {
+        op: 'stream-open',
+        id: OPENED_STREAM,
+        endpoint: 'session/follow',
+        payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } },
+      }, READER)
+      const missing = await read.answer(SHARE, { op: 'stream-next', id: MISSING_STREAM }, READER)
+      const cancelled = await read.answer(SHARE, { op: 'stream-cancel', id: OPENED_STREAM }, READER)
+
+      // The switch changes only the logging: every operation keeps its own answer.
+      expect(opened.status).toBe(200)
+      expect(opened.body).toEqual({ opened: true })
+      expect(missing.status).toBe(404)
+      expect(cancelled.status).toBe(200)
+      expect(cancelled.body).toEqual({ cancelled: true })
+
+      const observed = logs.filter(line => line.startsWith('[liveshare] viewer stream'))
+      expect(observed).toHaveLength(gatedLines)
+      if (gatedLines > 0) expect(observed).toEqual([...GATED_LINES])
+    } finally {
+      read.close()
+      if (previous === undefined) delete process.env.LIVESHARE_DEBUG_READS
+      else process.env.LIVESHARE_DEBUG_READS = previous
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/endpoint-classification.client.spec.ts b/packages/experimental/liveshare/tests/endpoint-classification.client.spec.ts
new file mode 100644
index 0000000000..ec47e869a5
--- /dev/null
+++ b/packages/experimental/liveshare/tests/endpoint-classification.client.spec.ts
@@ -0,0 +1,35 @@
+/**
+ * Runtime cases for the viewer endpoint classification.
+ *
+ * The completeness gate itself is the `satisfies Record<RemoteEndpoint, ViewerEndpointClass>` declaration
+ * in `src/client/endpoint-classification.ts`, compiled by the package's Client face; this spec pins the
+ * diagnostics the Host also uses when the derived action set drifts from the policy roles.
+ */
+import { describe, expect, it } from 'vitest'
+import { COMPLETE_VIEWER_ENDPOINT_CLASSES } from '../src/client/endpoint-classification.ts'
+import { VIEWER_ENDPOINT_CLASSES, assertSameViewerActions } from '../src/endpoint-classification.ts'
+
+/** The table's keys, used as the expected set in the runtime cases. */
+const CLASSIFIED = Object.keys(VIEWER_ENDPOINT_CLASSES)
+
+describe('viewer endpoint classification', () => {
+  it('exports the compiled classification without changing its keys', () => {
+    expect(Object.keys(COMPLETE_VIEWER_ENDPOINT_CLASSES)).toEqual(CLASSIFIED)
+  })
+
+  it('reports the endpoint a classification is missing', () => {
+    const incomplete = Object.fromEntries(
+      Object.entries(VIEWER_ENDPOINT_CLASSES).filter(([endpoint]) => endpoint !== 'session/prompt'),
+    )
+    expect(() => { assertSameViewerActions(Object.keys(incomplete), CLASSIFIED, 'VIEWER_ENDPOINT_CLASSES') })
+      .toThrow('liveshare: VIEWER_ENDPOINT_CLASSES must name exactly the same actions; '
+        + 'missing ["session/prompt"]; unexpected []')
+  })
+
+  it('reports the endpoint a classification adds beyond the expected set', () => {
+    const extra = { ...VIEWER_ENDPOINT_CLASSES, 'newPlugin/endpoint': 'plugin-offered' }
+    expect(() => { assertSameViewerActions(Object.keys(extra), CLASSIFIED, 'VIEWER_ENDPOINT_CLASSES') })
+      .toThrow('liveshare: VIEWER_ENDPOINT_CLASSES must name exactly the same actions; '
+        + 'missing []; unexpected ["newPlugin/endpoint"]')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/endpoint-classification.spec.ts b/packages/experimental/liveshare/tests/endpoint-classification.spec.ts
new file mode 100644
index 0000000000..4ff2958acb
--- /dev/null
+++ b/packages/experimental/liveshare/tests/endpoint-classification.spec.ts
@@ -0,0 +1,29 @@
+/**
+ * Runtime cases for the viewer endpoint classification.
+ *
+ * The Host derives `POLICY_DECIDED_ACTIONS` from this table and checks it against the policy roles at
+ * runtime; these cases pin the diagnostics it reports when the derived action set drifts.
+ */
+import { describe, expect, it } from 'vitest'
+import { VIEWER_ENDPOINT_CLASSES, assertSameViewerActions } from '../src/endpoint-classification.ts'
+
+/** The table's keys, used as the expected set in the runtime cases. */
+const CLASSIFIED = Object.keys(VIEWER_ENDPOINT_CLASSES)
+
+describe('viewer endpoint classification', () => {
+  it('reports the endpoint a classification is missing', () => {
+    const incomplete = Object.fromEntries(
+      Object.entries(VIEWER_ENDPOINT_CLASSES).filter(([endpoint]) => endpoint !== 'session/prompt'),
+    )
+    expect(() => { assertSameViewerActions(Object.keys(incomplete), CLASSIFIED, 'VIEWER_ENDPOINT_CLASSES') })
+      .toThrow('liveshare: VIEWER_ENDPOINT_CLASSES must name exactly the same actions; '
+        + 'missing ["session/prompt"]; unexpected []')
+  })
+
+  it('reports the endpoint a classification adds beyond the expected set', () => {
+    const extra = { ...VIEWER_ENDPOINT_CLASSES, 'newPlugin/endpoint': 'plugin-offered' }
+    expect(() => { assertSameViewerActions(Object.keys(extra), CLASSIFIED, 'VIEWER_ENDPOINT_CLASSES') })
+      .toThrow('liveshare: VIEWER_ENDPOINT_CLASSES must name exactly the same actions; '
+        + 'missing []; unexpected ["newPlugin/endpoint"]')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/fixtures/agent-watch.mjs b/packages/experimental/liveshare/tests/fixtures/agent-watch.mjs
new file mode 100644
index 0000000000..bf8362c8dd
--- /dev/null
+++ b/packages/experimental/liveshare/tests/fixtures/agent-watch.mjs
@@ -0,0 +1,57 @@
+/**
+ * Test-only observer for agent publication in one isolated acceptance instance.
+ *
+ * It subscribes to the harness's own lifecycle events and appends one line per occurrence to the file
+ * `BASE_AGENT_WATCH` names, so a case can state whether an agent was published without reading queue
+ * or job keys, and without any product code knowing this observer exists.
+ */
+
+import { appendFileSync } from 'node:fs'
+
+/** Whether the injected failure has already been spent. */
+let failedOnce = false
+
+/** Record one line, when this run asked for a record. */
+function note(line) {
+  const target = process.env.BASE_AGENT_WATCH
+  // A recorder that cannot write must fail loudly: an unwritable watch file would otherwise look
+  // exactly like a run in which nothing was published.
+  if (!target) throw new Error('agent-watch: BASE_AGENT_WATCH is not set for this instance')
+  // Negative control: one deliberate write failure proves the driver reports instrument error rather
+  // than reading the resulting silence as "nothing was published".
+  if (process.env.AGENT_WATCH_FAIL_ONCE === '1' && !failedOnce) {
+    failedOnce = true
+    process.stderr.write(`agent-watch: write failed for ${target}: injected for the negative control\n`)
+    throw new Error('agent-watch: injected write failure')
+  }
+  try {
+    appendFileSync(target, `${line}\n`)
+  } catch (error) {
+    // The registry swallows listener exceptions and logs a warning, so a thrown error alone cannot be
+    // told apart from "nothing happened". This marker is what the driver asserts on; it does not change
+    // the registry's own exception isolation.
+    process.stderr.write(`agent-watch: write failed for ${target}: ${String(error)}\n`)
+    throw error
+  }
+}
+
+/** Cordis plugin name. */
+export const name = 'acceptance-agent-watch'
+
+/**
+ * Subscribe to publication and lifecycle events.
+ * @param {object} ctx - Cordis context of this isolated instance.
+ */
+export function apply(ctx) {
+  note('watch-loaded')
+  // Both scoped and root carriers are subscribed: the harness emits publication on the entry's own
+  // carrier, so a root listener alone would miss it.
+  ctx.on('agent/created', (payload) => { note(`created ${String(payload?.agent?.id)}`) })
+  ctx.on('agent/disposed', (payload) => { note(`disposed ${String(payload?.agent?.id)}`) })
+  ctx.on('agent/status', (payload) => {
+    note(`status ${String(payload?.agent?.id)} ${String(payload?.status)}`)
+  })
+  // No setup-entry observer here: reading the registry through `ctx.get('agents')` from this plugin did
+  // not bind (no `inject`, and the host registers its step independently), so an "entry" line would have
+  // been absent whether or not the installer ran. Publication is observed for real, below and above.
+}
diff --git a/packages/experimental/liveshare/tests/fixtures/base-llm.mjs b/packages/experimental/liveshare/tests/fixtures/base-llm.mjs
new file mode 100644
index 0000000000..7ac9a2c042
--- /dev/null
+++ b/packages/experimental/liveshare/tests/fixtures/base-llm.mjs
@@ -0,0 +1,197 @@
+/** Deterministic keyless LLM for the real-profile acceptance base: one file write, then text. */
+
+import { existsSync, writeFileSync } from 'node:fs'
+import { ToolCallId, LlmAdapter } from '@deepseek-ai/dsh-llm'
+
+let nextCall = 0
+let callCount = 0
+
+function textChunks(text) {
+  return [
+    { type: 'block-start', index: 0, blockType: 'text' },
+    { type: 'text-delta', index: 0, text },
+    { type: 'block-end', index: 0, block: { type: 'text', text } },
+    { type: 'usage', usage: { inputTokens: 10, outputTokens: 3 } },
+    { type: 'finish', reason: { kind: 'stop' } },
+  ]
+}
+
+function writeChunks(filePath, content) {
+  const index = 0
+  const id = ToolCallId(`base-fixture-${++nextCall}`)
+  const args = JSON.stringify({ file_path: filePath, content })
+  return [
+    { type: 'block-start', index, blockType: 'tool-call' },
+    { type: 'tool-call-delta', index, id, name: 'write', argumentsDelta: args },
+    { type: 'block-end', index, block: { type: 'tool-call', id, name: 'write', arguments: args } },
+    { type: 'usage', usage: { inputTokens: 10, outputTokens: 5 } },
+    { type: 'finish', reason: { kind: 'tool-calls' } },
+  ]
+}
+
+/** One `read` call the fixture issues for the acceptance cases that exercise the read ceiling. */
+function readChunks(filePath) {
+  const index = 0
+  const id = ToolCallId(`base-fixture-read-${++nextCall}`)
+  const args = JSON.stringify({ file_path: filePath })
+  return [
+    { type: 'block-start', index, blockType: 'tool-call' },
+    { type: 'tool-call-delta', index, id, name: 'read', argumentsDelta: args },
+    { type: 'block-end', index, block: { type: 'tool-call', id, name: 'read', arguments: args } },
+    { type: 'usage', usage: { inputTokens: 10, outputTokens: 5 } },
+    { type: 'finish', reason: { kind: 'tool-calls' } },
+  ]
+}
+
+/**
+ * Wait for a case to release the write this turn is about to ask for.
+ *
+ * A turn that has not yet asked for its tool call is genuinely in flight, which is what lets an
+ * acceptance case change the share driving it in between. The wait is bounded and loud: a case that
+ * never releases the gate fails as a fixture fault instead of hanging the run.
+ * @param path - File the case creates to release the write.
+ * @param signal - Stream cancellation, so a stopped turn stops waiting for the gate.
+ * @returns Nothing once the file exists.
+ */
+async function awaitGate(path, signal) {
+  if (path === undefined || path === '') {
+    throw new Error('CHILD_GATED_WRITE needs BASE_LLM_GATE to name its release file')
+  }
+  const deadline = Date.now() + 60_000
+  while (!existsSync(path)) {
+    signal?.throwIfAborted()
+    if (Date.now() > deadline) throw new Error(`CHILD_GATED_WRITE was never released: ${path}`)
+    await new Promise(resolve => { setTimeout(resolve, 100) })
+  }
+}
+
+/** Text the fixture saw from the caller, in order. */
+function userTexts(messages) {
+  return messages.flatMap(message => message.role === 'user'
+    ? message.content.filter(block => block.type === 'text').map(block => block.text)
+    : [])
+}
+
+/**
+ * One tool result is its own \`role: 'tool'\` message, so the check reads the newest one's text.
+ * @returns the last tool result's text, or undefined when the conversation has none yet.
+ */
+function lastToolResult(messages) {
+  for (const message of [...messages].reverse()) {
+    if (message.role !== 'tool') continue
+    return message.content.filter(block => block.type === 'text').map(block => block.text).join('\n')
+  }
+  return undefined
+}
+
+class BaseFixtureAdapter extends LlmAdapter {
+  async * stream(options) {
+    const texts = userTexts(options.messages)
+    const toolResult = lastToolResult(options.messages)
+    // A repeated identical request means the fixture is looping; say so instead of hanging the run.
+    const writeRequests = options.messages.flatMap(message => message.content
+      .filter(block => block.type === 'tool-call' && block.name === 'write')).length
+    // Injected context follows the prompt in the message list, so the newest marker decides the
+    // turn rather than the last user text; older prompts stay in the history and must not.
+    const command = [...texts].reverse()
+      .find(text => ['NO_TOOL', 'WRITE_FILE', 'CHILD_TEXT', 'CHILD_GATED_WRITE', 'CHILD_WRITE', 'CHILD_SLOW', 'CHILD_READ']
+        .some(marker => text.includes(marker))) ?? ''
+    // A read case names the exact path after its marker, so one fixture serves every path.
+    const readPath = command.startsWith('CHILD_READ ') ? command.slice('CHILD_READ '.length).trim() : ''
+    // One read per read request, not one per path: a later request to read the same file must issue
+    // its own read, or the session never records a fresh observation of what that request saw.
+    const readRequests = texts.filter(text => text.includes('CHILD_READ')).length
+    const readAsked = options.messages.flatMap(message => message.content)
+      .filter(block => block.type === 'tool-call' && block.name === 'read').length >= readRequests
+    // A write case asks once per request, whatever earlier turns already did.
+    const writeMark = command.startsWith('CHILD_WRITE ') ? command.slice('CHILD_WRITE '.length).trim() : ''
+    const writeAsked = options.messages.flatMap(message => message.content)
+      .some(block => block.type === 'tool-call' && block.name === 'write'
+        && String(block.arguments ?? '').includes(writeMark))
+    // A gated write knows whether it has asked yet the same way, so its second call can answer the result.
+    const gateMark = command.startsWith('CHILD_GATED_WRITE ')
+      ? command.slice('CHILD_GATED_WRITE '.length).trim()
+      : ''
+    const gatedAsked = gateMark !== '' && options.messages.flatMap(message => message.content)
+      .some(block => block.type === 'tool-call' && block.name === 'write'
+        && String(block.arguments ?? '').includes(gateMark))
+    // Each text answer echoes the request it answered, so a case can tie one answer to one prompt
+    // instead of searching the whole history for an expected word.
+    const answered = command.includes('NO_TOOL')
+      ? `BASE_NO_TOOL_OK ${command}`
+      : command.includes('CHILD_TEXT')
+        ? `CHILD_TEXT_OK ${command}`
+      : command.includes('CHILD_READ')
+        ? readAsked ? 'CHILD_READ_DONE' : undefined
+        : command.includes('CHILD_SLOW')
+          ? `CHILD_SLOW_STARTED ${command}`
+          // A gated write asks once, after its gate opens; the answer after the result finishes the turn.
+          : command.includes('CHILD_GATED_WRITE')
+            ? gatedAsked ? 'CHILD_GATED_WRITE_DONE' : undefined
+          // A child write attempt asks once; the answer after its result lets the turn finish.
+          : command.includes('CHILD_WRITE')
+            ? writeAsked ? 'CHILD_WRITE_REFUSED' : undefined
+            // A write the child already asked for and never got a result for is a loop, not a wait.
+            : toolResult === undefined && writeRequests >= 1
+              ? `BASE_FIXTURE_LOOPED writes=${String(writeRequests)}`
+              : toolResult !== undefined ? 'BASE_TURN_2' : undefined
+    let chunks
+    if (answered !== undefined) chunks = textChunks(answered)
+    else if (command.includes('CHILD_READ')) chunks = readChunks(readPath)
+    else if (command.includes('CHILD_GATED_WRITE')) {
+      // The case reads this to know the model was reached while its write is still withheld; the adapter
+      // call itself is logged only once the gate opens.
+      writeFileSync(`${String(process.env.BASE_LLM_GATE)}.waiting`, 'waiting\n')
+      await awaitGate(process.env.BASE_LLM_GATE, options.signal)
+      chunks = writeChunks('note.txt', `the child must not write this ${gateMark}\n`)
+    } else {
+      chunks = writeChunks('note.txt', command.includes('CHILD_WRITE')
+        // The request's own token travels inside the written content, so this call is recognisably
+        // the one that request asked for.
+        ? `the child must not write this ${writeMark}\n`
+        : 'hello from the real write tool\n')
+    }
+    const label = JSON.stringify(chunks.find(chunk => chunk.type === 'block-end')?.block ?? null).slice(0, 60)
+    // Diagnostic only: the acceptance run points this at a temp file to count adapter calls and
+    // record which marker the caller really sent.
+    if (process.env.BASE_LLM_LOG) {
+      const { appendFileSync } = await import('node:fs')
+      callCount += 1
+      appendFileSync(process.env.BASE_LLM_LOG, `call#${String(callCount)} tools=${JSON.stringify(
+        options.tools?.map(t => t.name) ?? [])} command=${JSON.stringify(command.slice(0, 40))}`
+        + ` toolResult=${String(toolResult !== undefined)} writes=${String(writeRequests)}`
+        + ` -> ${label}\n`)
+    }
+    // A prompt that must be stopped by the caller: hold the turn open until its own cancellation
+    // arrives, so a failed cancel surfaces as an error turn instead of a slow passing one.
+    if (command.includes('CHILD_SLOW')) {
+      // A stream that never finishes on its own: no terminal chunk is yielded, so the turn stays in
+      // flight and only the caller's own cancellation can end it.
+      yield { type: 'block-start', index: 0, blockType: 'text' }
+      yield { type: 'text-delta', index: 0, text: `CHILD_SLOW_STARTED ${command}` }
+      for (let tick = 0; tick < 200; tick += 1) {
+        options.signal?.throwIfAborted()
+        await new Promise(resolve => { setTimeout(resolve, 100) })
+      }
+      throw new Error('CHILD_SLOW was never cancelled')
+    }
+    for (const chunk of chunks) {
+      options.signal?.throwIfAborted()
+      yield chunk
+    }
+  }
+}
+
+/** Cordis plugin name. */
+export const name = 'base-fixture-llm'
+/** LLM registry dependency. */
+export const inject = ['llm']
+
+/** Register the keyless adapter on the shipped default provider route. */
+export function apply(ctx) {
+  // Loaded marker: proves the loader activated this plugin, independently of any model call.
+  if (process.env.BASE_LLM_LOADED) {
+    try { writeFileSync(process.env.BASE_LLM_LOADED, 'loaded\n') } catch {}
+  }
+  ctx.llm.registerAdapter(['deepseek-official'], new BaseFixtureAdapter())
+}
diff --git a/packages/experimental/liveshare/tests/fork-enforcement-unit.spec.ts b/packages/experimental/liveshare/tests/fork-enforcement-unit.spec.ts
new file mode 100644
index 0000000000..396e3b1abc
--- /dev/null
+++ b/packages/experimental/liveshare/tests/fork-enforcement-unit.spec.ts
@@ -0,0 +1,787 @@
+/** Fork enforcement installation refusals and the confined tool bodies it registers. */
+
+import { describe, expect, it, vi } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import { createScope } from '@deepseek-ai/dsh-scope'
+import type { ToolDefinition } from '@deepseek-ai/dsh-tools'
+import { READ_ONLY_FORK_CEILING, type ForkCeiling } from '../src/host/fork-policy.ts'
+import { SHARED_TOOL_PROFILES, sharedToolNames } from '../src/host/shared-tools.ts'
+import {
+  installForkEnforcement,
+  installHostForkEnforcement,
+  installSourceSessionAccess,
+  preflightForkChild,
+} from '../src/host/fork-enforcement.ts'
+import type { ForkEnforcementFailure } from '../src/host/fork-enforcement.ts'
+
+interface RegisteredTool {
+  readonly name: string
+  readonly execute: (args: unknown, exec: Record<string, unknown>) => Promise<unknown>
+}
+
+function deploymentTool(name: string, body = vi.fn(async () => 'ran')): ToolDefinition & RegisteredTool {
+  return {
+    name,
+    description: 'deployment tool',
+    parameters: {},
+    output: { schema: { type: 'string' }, render: () => [] },
+    execute: body,
+  } as never
+}
+
+function harness(options: { readonly read?: RegisteredTool; readonly write?: RegisteredTool; readonly registerThrows?: string } = {}) {
+  const registered = new Map<string, RegisteredTool>()
+  if (options.read !== undefined) registered.set(options.read.name, options.read)
+  if (options.write !== undefined) registered.set(options.write.name, options.write)
+  let guardFunction: ((execution: Record<string, unknown>) => string | undefined) | undefined
+  const tools = {
+    get: vi.fn((name: string) => registered.get(name)),
+    register: vi.fn((definition: RegisteredTool) => {
+      if (options.registerThrows === definition.name) throw new Error(`duplicate ${definition.name}`)
+      registered.set(definition.name, definition)
+      return () => { registered.delete(definition.name) }
+    }),
+    guard: vi.fn((guard: (execution: Record<string, unknown>) => string | undefined) => {
+      guardFunction = guard
+      return () => {}
+    }),
+  }
+  const listeners = new Map<string, (value: unknown) => unknown>()
+  const childContext = {
+    tools,
+    waterfall: vi.fn(async (...args: unknown[]) => {
+      const fallback = args.at(-1)
+      return typeof fallback === 'function' ? (fallback as () => unknown)() : undefined
+    }),
+    on: vi.fn((event: string, listener: (value: unknown) => unknown) => {
+      listeners.set(event, listener)
+      return () => { listeners.delete(event) }
+    }),
+    emit: vi.fn(),
+  }
+  const files = new Map<string, string>()
+  const fs = {
+    resolve: vi.fn(async (path: string) => path.includes('outside')
+      ? '/outside'
+      : `/granted/${path.replace(/^\/+/u, '')}`),
+    contains: vi.fn((root: string, path: string) => path.startsWith(root)),
+    processPath: vi.fn((path: string) => path),
+    writeText: vi.fn(async (path: string, content: string) => {
+      files.set(path, content)
+      return { operation: 'create', before: undefined, after: 'v1', version: 'v1' }
+    }),
+    editText: vi.fn(async () => ({ before: 'old', after: 'new', version: 'v2' })),
+  }
+  const forks = {
+    enforcementInstalled: vi.fn(() => true),
+    enforcedCeiling: vi.fn((_id: string): ForkCeiling | undefined => undefined),
+    installEnforcement: vi.fn(() => true),
+    releaseEnforcement: vi.fn(),
+  }
+  const describe = vi.fn(() => ({ paths: ['inside.ts'], noFileEffect: false }))
+  const failure: ForkEnforcementFailure = {}
+  const target = {
+    childSessionId: 'child-1',
+    childContext,
+    childScope: { name: 'child-scope' },
+    grantedRoot: '/granted',
+    cwd: '/granted',
+    resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: '/granted', sessionId: 'child-1' }),
+    fs,
+    tools: { get: (name: string) => registered.get(name) },
+    forks,
+    describe,
+    authorized: undefined as ((tool: string) => boolean) | undefined,
+    refreshAuthorized: undefined as (() => Promise<void>) | undefined,
+  }
+  return {
+    target, childContext, tools, registered, fs, forks, describe, failure, listeners,
+    guard: () => guardFunction,
+  }
+}
+
+describe('confined fork tools', () => {
+  it('installs nothing when the deployment ships no tool to shadow', () => {
+    const h = harness()
+    expect(installForkEnforcement(h.target as never, h.failure)).toBeTypeOf('function')
+    expect(h.tools.guard).toHaveBeenCalled()
+  })
+
+  it('refuses a fork read with no named file, outside its grant, or after release', async () => {
+    const read = deploymentTool('read')
+    const h = harness({ read })
+    installForkEnforcement(h.target as never, h.failure)
+    const confined = h.registered.get('read')!
+    await expect(confined.execute({}, { signal: undefined })).rejects.toThrow('may only use read with the paths')
+    await expect(confined.execute('not a record', { signal: undefined })).rejects.toThrow('may only use read with the paths')
+    await expect(confined.execute({ file_path: 'outside.txt' }, { signal: undefined }))
+      .rejects.toThrow('inside the workspace')
+    // The grant itself decides, so a path the fake reports inside succeeds and runs the deployment body.
+    const inside = await confined.execute({ file_path: 'inside.ts' }, { signal: undefined })
+    expect(inside).toBe('ran')
+    expect(read.execute).toHaveBeenCalledWith({ file_path: '/granted/inside.ts' }, expect.anything())
+
+    h.forks.enforcementInstalled.mockReturnValue(false)
+    await expect(confined.execute({ file_path: 'inside.ts' }, { signal: undefined }))
+      .rejects.toThrow('no longer holds permission')
+  })
+
+  it('refuses a read it could not register and keeps the registration error', () => {
+    const read = deploymentTool('read')
+    const h = harness({ read, registerThrows: 'read' })
+    expect(installForkEnforcement(h.target as never, h.failure)).toBeUndefined()
+    // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+    expect(h.failure.registration).toMatchObject({ tool: 'read', error: expect.any(Error) })
+  })
+
+  it('unwinds later replacements when the read replacement could not register', () => {
+    const read = deploymentTool('read')
+    const h = harness({ read, registerThrows: 'read' })
+    // The view surface installs in table order, so glob is registered after the read failure and must be
+    // released again when the installation is refused as a whole.
+    h.registered.set('glob', deploymentTool('glob'))
+    expect(installForkEnforcement(h.target as never, h.failure)).toBeUndefined()
+    expect(h.registered.has('glob')).toBe(false)
+  })
+
+  it('bounds a fork edit to the granted root under the current policy', async () => {
+    const read = deploymentTool('read')
+    const write = deploymentTool('write')
+    const h = harness({ read, write })
+    h.registered.set('edit', deploymentTool('edit'))
+    expect(installForkEnforcement({ ...h.target, write: true } as never, h.failure)).toBeDefined()
+    const edit = h.registered.get('edit')!
+
+    // The body runs the deployment's own argument checks itself, because it replaces its execution.
+    await expect(edit.execute('not a record', { signal: undefined }))
+      .rejects.toThrow('replacing non-empty text')
+    await expect(edit.execute({}, { signal: undefined })).rejects.toThrow('replacing non-empty text')
+    await expect(edit.execute({ file_path: 'inside.ts', old_string: '', new_string: 'b' }, { signal: undefined }))
+      .rejects.toThrow('replacing non-empty text')
+    await expect(edit.execute({ file_path: 'inside.ts', old_string: 'a', new_string: 'a' }, { signal: undefined }))
+      .rejects.toThrow('replacing non-empty text')
+    // The containment check runs inside the body too, so a target the guard did not see is still refused.
+    await expect(edit.execute({ file_path: '../outside.ts', old_string: 'a', new_string: 'b' }, { signal: undefined }))
+      .rejects.toThrow('inside the workspace')
+    expect(h.fs.editText).not.toHaveBeenCalled()
+
+    const result = await edit.execute({
+      file_path: 'inside.ts', old_string: 'old', new_string: 'new', replace_all: true,
+    }, { signal: undefined })
+    expect(result).toEqual({ path: '/granted/inside.ts', before: 'old', after: 'new' })
+    expect(h.fs.editText).toHaveBeenCalledWith(
+      '/granted/inside.ts',
+      { oldString: 'old', newString: 'new', replaceAll: true },
+      undefined,
+      undefined,
+      expect.objectContaining({ workspaceRoot: '/granted' }),
+    )
+    expect(h.childContext.emit).toHaveBeenCalledWith(
+      'fs/observed', '/granted/inside.ts', { kind: 'present', version: 'v2' }, expect.anything(),
+    )
+
+    h.forks.enforcementInstalled.mockReturnValue(false)
+    await expect(edit.execute({ file_path: 'inside.ts', old_string: 'a', new_string: 'b' }, { signal: undefined }))
+      .rejects.toThrow('no longer holds permission')
+  })
+
+  it('refuses a write-capable child when the deployment ships no write to replace', () => {
+    const read = deploymentTool('read')
+    const h = harness({ read })
+    expect(installForkEnforcement({ ...h.target, write: true } as never, h.failure)).toBeUndefined()
+    // The read replacement it registered first is released again.
+    expect(h.registered.has('read')).toBe(false)
+  })
+
+  it('refuses a write-capable child whose write replacement could not register', () => {
+    const read = deploymentTool('read')
+    const write = deploymentTool('write')
+    const h = harness({ read, write, registerThrows: 'write' })
+    expect(installForkEnforcement({ ...h.target, write: true } as never, h.failure)).toBeUndefined()
+    expect(h.failure.registration).toMatchObject({ tool: 'write' })
+  })
+
+  it('confines a fork write to the granted root and writes under the current policy', async () => {
+    const read = deploymentTool('read')
+    const write = deploymentTool('write')
+    const h = harness({ read, write })
+    expect(installForkEnforcement({ ...h.target, write: true } as never, h.failure)).toBeDefined()
+    const confined = h.registered.get('write')!
+
+    await expect(confined.execute({ file_path: 'inside.ts' }, { signal: undefined }))
+      .rejects.toThrow('named file with text content')
+    await expect(confined.execute('not a record', { signal: undefined }))
+      .rejects.toThrow('named file with text content')
+    await expect(confined.execute({ file_path: '../outside', content: 'x' }, { signal: undefined }))
+      .rejects.toThrow('inside the workspace')
+    h.forks.enforcementInstalled.mockReturnValue(false)
+    await expect(confined.execute({ file_path: 'inside.ts', content: 'x' }, { signal: undefined }))
+      .rejects.toThrow('no longer holds permission')
+
+    h.forks.enforcementInstalled.mockReturnValue(true)
+    const result = await confined.execute({ file_path: 'inside.ts', content: 'hello' }, { signal: undefined })
+    expect(result).toEqual({ path: 'inside.ts', operation: 'create', before: null, after: 'v1' })
+    expect(h.fs.writeText).toHaveBeenCalledWith('/granted/inside.ts', 'hello', undefined, undefined, expect.anything())
+    expect(h.childContext.emit).toHaveBeenCalledWith('fs/observed', '/granted/inside.ts', { kind: 'present', version: 'v1' }, expect.anything())
+  })
+
+  it('refuses an execution it cannot attribute, a forbidden tool, and one it cannot verify', async () => {
+    const read = deploymentTool('read')
+    const h = harness({ read })
+    installForkEnforcement(h.target as never, h.failure)
+    h.forks.enforcedCeiling.mockReturnValue(READ_ONLY_FORK_CEILING)
+    const guard = h.guard() as (execution: Record<string, unknown>) => string | undefined
+    expect(guard).toBeDefined()
+    expect(guard?.({ name: 'read', arguments: { file_path: 'inside.ts' }, agent: { id: 'other' } }))
+      .toContain('without a child session')
+
+    h.target.authorized = () => false
+    expect(guard?.({ name: 'read', arguments: { file_path: 'inside.ts' }, agent: { id: 'child-1' }, token: Symbol('t') }))
+      .toContain('which this host did not install')
+
+    h.target.authorized = () => true
+    expect(guard?.({ name: 'read', arguments: { file_path: 'inside.ts' }, agent: { id: 'child-1' } }))
+      .toContain('may only read inside the workspace')
+
+    // A definition visible from both registries is trusted even though this host did not install it.
+    const visible = harness({ read })
+    installForkEnforcement(visible.target as never, visible.failure)
+    visible.forks.enforcedCeiling.mockReturnValue(READ_ONLY_FORK_CEILING)
+    const visibleGuard = visible.guard()
+    expect(visibleGuard?.({ name: 'read', arguments: { file_path: 'inside.ts' }, agent: { id: 'child-1' } }))
+      .toContain('may only read inside the workspace')
+    expect(visibleGuard?.({ name: 'write', arguments: {}, agent: { id: 'child-1' } }))
+      .toContain('may not use write')
+
+    // A tool the ceiling allows but this host did not install is trusted only when both registries
+    // hand back the same definition.
+    const visibleTool = harness()
+    installForkEnforcement(visibleTool.target as never, visibleTool.failure)
+    visibleTool.registered.set('grep', deploymentTool('grep'))
+    visibleTool.forks.enforcedCeiling.mockReturnValue({ ...READ_ONLY_FORK_CEILING, allowedTools: ['grep', 'ghost'] })
+    const visibleToolGuard = visibleTool.guard()
+    // The ceiling names grep, but this installation never registered a confined grep for the child:
+    // the name alone does not make the deployment's definition executable.
+    expect(visibleToolGuard?.({ name: 'grep', arguments: { file_path: 'inside.ts' }, agent: { id: 'child-1' } }))
+      .toContain('which this host did not install')
+    expect(visibleToolGuard?.({ name: 'ghost', arguments: {}, agent: { id: 'child-1' } }))
+      .toContain('which this host did not install')
+
+    // A verdict produced for this execution authorizes its path.
+    const token = Symbol('verified')
+    const preExecute = visible.listeners.get('tools/pre-execute') as
+      ((value: Record<string, unknown>, next: () => unknown) => Promise<unknown>) | undefined
+    await preExecute?.({ token, arguments: { file_path: 'inside.ts' }, agent: { id: 'child-1' } }, () => 'next')
+    expect(h.guard()?.({ name: 'read', arguments: { file_path: 'inside.ts' }, agent: { id: 'child-1' }, token }))
+      .toContain('may only read inside the workspace')
+  })
+
+  it('refuses a no-effect tool whose visible definition changed after the limit was installed', () => {
+    const read = deploymentTool('read')
+    const h = harness({ read })
+    h.registered.set('todo_write', deploymentTool('todo_write'))
+    expect(installForkEnforcement(h.target as never, h.failure)).toBeDefined()
+    h.forks.enforcedCeiling.mockReturnValue(READ_ONLY_FORK_CEILING)
+    h.describe.mockReturnValue({ paths: [], noFileEffect: true })
+    const guard = h.guard() as (execution: Record<string, unknown>) => string | undefined
+    const call = () => guard({ name: 'todo_write', arguments: {}, agent: { id: 'child-1' } })
+    // The deployment's own definition is the one the limit vouched for, so the no-effect tool runs.
+    expect(call()).toBeUndefined()
+    // A different definition answering to the same name is not the one this host installed or vouched
+    // for; the name alone is not permission.
+    h.registered.set('todo_write', deploymentTool('todo_write'))
+    expect(call()).toContain('which this host did not install')
+  })
+
+  it('records no verdicts for an execution that names no path', async () => {
+    const read = deploymentTool('read')
+    const h = harness({ read })
+    installForkEnforcement(h.target as never, h.failure)
+    h.describe.mockReturnValueOnce({ paths: ['inside.ts'], noFileEffect: false }).mockReturnValue({ paths: undefined, noFileEffect: false } as never)
+    const preExecute = h.listeners.get('tools/pre-execute') as
+      ((value: Record<string, unknown>, next: () => unknown) => Promise<unknown>) | undefined
+    await preExecute?.({ token: Symbol('t'), arguments: {} }, () => 'next')
+    expect(h.fs.resolve).not.toHaveBeenCalled()
+  })
+
+  it('returns nothing when the child guard cannot register', () => {
+    const read = deploymentTool('read')
+    const h = harness({ read })
+    h.tools.guard.mockReturnValue(undefined as never)
+    expect(installForkEnforcement(h.target as never, h.failure)).toBeUndefined()
+  })
+
+  it('records verdicts only for executions that name a path and can be resolved', async () => {
+    const read = deploymentTool('read')
+    const h = harness({ read })
+    installForkEnforcement(h.target as never, h.failure)
+    const preExecute = h.listeners.get('tools/pre-execute') as
+      ((value: Record<string, unknown>, next: () => unknown) => Promise<unknown>) | undefined
+    expect(preExecute).toBeDefined()
+    // No token and no paths both leave no verdict.
+    const next = (): string => 'next'
+    await preExecute?.({ token: undefined, arguments: {} }, next)
+    await preExecute?.({ token: Symbol('t'), arguments: {} }, next)
+    h.fs.resolve.mockRejectedValueOnce(new Error('cancelled'))
+    await preExecute?.({ token: Symbol('t2'), arguments: { file_path: 'inside.ts' } }, next)
+    expect(h.fs.resolve).toHaveBeenCalled()
+  })
+})
+
+describe('host installation guards', () => {
+  it('installs nothing without an agents lookup or a live agent', async () => {
+    const ctx = new Context()
+    await expect(installHostForkEnforcement(ctx, 'child-1', {} as never)).resolves.toBeUndefined()
+    ctx.provide('agents', { get: () => undefined } as never)
+    await expect(installHostForkEnforcement(ctx, 'child-1', {} as never)).resolves.toBeUndefined()
+  })
+
+  it('installs nothing for a host missing its filesystem, scope, or child workspace', async () => {
+    const missingServices = new Context()
+    missingServices.provide('agents', { get: () => ({ ctx: new Context(), session: { header: { cwd: '/root' } } }) } as never)
+    await expect(installHostForkEnforcement(missingServices, 'child-1', {} as never)).resolves.toBeUndefined()
+
+    const missingScope = new Context()
+    missingScope.provide('agents', { get: () => ({ ctx: new Context(), session: { header: { cwd: '/root' } } }) } as never)
+    missingScope.provide('fs', { resolve: vi.fn(async () => '/root') } as never)
+    missingScope.provide('sandboxPolicy', { resolve: () => ({ workspaceRoot: '/root' }) } as never)
+    missingScope.provide('tools', {} as never)
+    await expect(installHostForkEnforcement(missingScope, 'child-1', {} as never)).resolves.toBeUndefined()
+  })
+
+  it('installs a child limit through its own scoped context and policy', async () => {
+    const base = new Context()
+    const tools = {
+      get: vi.fn((name: string) => name === 'write' ? deploymentTool('write') : undefined),
+      register: vi.fn((definition: RegisteredTool) => {
+        registered.set(definition.name, definition)
+        return () => { registered.delete(definition.name) }
+      }),
+      guard: vi.fn(() => () => {}),
+    }
+    const registered = new Map<string, RegisteredTool>()
+    const fs = {
+      resolve: vi.fn(async () => '/granted/inside.ts'),
+      contains: vi.fn(() => true),
+      processPath: vi.fn((path: string) => path),
+      writeText: vi.fn(async () => ({ operation: 'update', before: 'v0', after: 'v1', version: 'v1' })),
+    }
+    const policy = { resolve: vi.fn(() => ({ mode: 'workspace-write', workspaceRoot: '/granted', sessionId: 'child-1' })) }
+    base.provide('fs', fs as never)
+    base.provide('sandboxPolicy', policy as never)
+    base.provide('tools', tools as never)
+    const scope = createScope(base, { session: { id: 'child-1' } })
+    base.provide('agents', { get: () => ({ ctx: scope.ctx, session: { id: 'child-1', header: { cwd: '/granted' } } }) } as never)
+    const dispose = await installHostForkEnforcement(base, 'child-1', {
+      forks: {
+        enforcementInstalled: () => true,
+        enforcedCeiling: () => undefined,
+        installEnforcement: () => true,
+        releaseEnforcement: () => {},
+      },
+      describe: () => ({ paths: ['inside.ts'], noFileEffect: false }),
+      write: true,
+      authorized: () => true,
+      refreshAuthorized: async () => {},
+    } as never)
+    expect(dispose).toBeTypeOf('function')
+    const write = registered.get('write')!
+    await expect(write.execute({ file_path: 'inside.ts', content: 'hello' }, { signal: undefined }))
+      .resolves.toMatchObject({ path: 'inside.ts' })
+    expect(policy.resolve).toHaveBeenCalled()
+    expect(fs.writeText).toHaveBeenCalled()
+    dispose?.()
+  })
+
+  it('refuses a scoped child whose Session states no workspace', async () => {
+    const base = new Context()
+    base.provide('fs', { resolve: vi.fn(async () => '/granted') } as never)
+    base.provide('sandboxPolicy', { resolve: () => ({ workspaceRoot: '/granted' }) } as never)
+    base.provide('tools', { get: vi.fn(), register: vi.fn(), guard: vi.fn(() => () => {}) } as never)
+    const scope = createScope(base, { session: { id: 'child-1' } })
+    base.provide('agents', { get: () => ({ ctx: scope.ctx, session: { id: 'child-1', header: {} } }) } as never)
+    await expect(installHostForkEnforcement(base, 'child-1', {} as never)).resolves.toBeUndefined()
+  })
+
+  it('preflights nothing when the host cannot observe the Session or resolve a path', async () => {
+    const withoutQuery = new Context()
+    await expect(preflightForkChild(withoutQuery, 'child-1')).resolves.toBeUndefined()
+    const withoutFs = new Context()
+    withoutFs.provide('sessionQuery', { observeSession: vi.fn() } as never)
+    await expect(preflightForkChild(withoutFs, 'child-1')).resolves.toBeUndefined()
+  })
+
+  it('reports an unreadable, workspace-less, or unresolvable child Session', async () => {
+    const unreadable = new Context()
+    unreadable.provide('fs', { resolve: vi.fn(async () => '/root') } as never)
+    unreadable.provide('sessionQuery', {
+      observeSession: async () => { throw 'session unavailable' },
+    } as never)
+    await expect(preflightForkChild(unreadable, 'child-1')).rejects.toThrow('session unavailable')
+
+    const noWorkspace = new Context()
+    noWorkspace.provide('fs', { resolve: vi.fn(async () => '/root') } as never)
+    noWorkspace.provide('sessionQuery', {
+      observeSession: async () => ({ header: {}, [Symbol.dispose]: () => {} }),
+    } as never)
+    await expect(preflightForkChild(noWorkspace, 'child-1')).rejects.toThrow('has no workspace')
+
+    const unresolvable = new Context()
+    unresolvable.provide('fs', { resolve: async () => { throw new Error('outside workspace') } } as never)
+    unresolvable.provide('sessionQuery', {
+      observeSession: async () => ({ header: { cwd: '/workspace' }, [Symbol.dispose]: () => {} }),
+    } as never)
+    await expect(preflightForkChild(unresolvable, 'child-1')).rejects.toThrow('cannot be confined')
+  })
+})
+
+describe('source-session sandbox', () => {
+  function sourceHarness(options: {
+    readonly tools?: readonly string[]
+    readonly writeGate?: { mayWrite: () => boolean }
+    readonly registerThrows?: string
+    readonly refresh?: () => Promise<void>
+    readonly resolve?: (path: string) => Promise<string>
+  } = {}) {
+    const deployments = new Map<string, RegisteredTool>()
+    for (const name of options.tools ?? ['read']) deployments.set(name, deploymentTool(name))
+    const registered = new Map<string, RegisteredTool>(deployments)
+    const installed = new Map<string, RegisteredTool>()
+    let guardFunction: ((execution: Record<string, unknown>) => string | undefined) | undefined
+    const guard = vi.fn((fn: (execution: Record<string, unknown>) => string | undefined) => {
+      guardFunction = fn
+      return () => {}
+    })
+    const context = {
+      tools: {
+        get: vi.fn((name: string) => registered.get(name)),
+        register: vi.fn((definition: RegisteredTool) => {
+          if (options.registerThrows === definition.name) throw new Error(`duplicate ${definition.name}`)
+          installed.set(definition.name, definition)
+          return () => { installed.delete(definition.name) }
+        }),
+        guard,
+      },
+      waterfall: vi.fn(async () => undefined),
+      on: vi.fn(() => () => {}),
+      emit: vi.fn(),
+    }
+    const fs = {
+      resolve: vi.fn(async (path: string) => {
+        if (options.resolve !== undefined) return await options.resolve(path)
+        if (path.includes('outside')) return '/outside'
+        return path.startsWith('/') ? path : `/granted/${path}`
+      }),
+      contains: vi.fn((root: string, path: string) => path === root || path.startsWith(`${root}/`)),
+      processPath: vi.fn((path: string) => path),
+      writeText: vi.fn(async () => ({ operation: 'update', before: 'v0', after: 'v1', version: 'v1' })),
+      editText: vi.fn(async () => ({ before: 'old', after: 'new', version: 'v2' })),
+    }
+    const target = {
+      sessionId: 'session-1',
+      context,
+      scope: { name: 'source-scope' },
+      grantedRoot: '/granted',
+      cwd: '/granted',
+      fs,
+      tools: { get: (name: string) => registered.get(name) },
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: '/granted', sessionId: 'session-1' }),
+      describe: () => ({ paths: ['inside.ts'], noFileEffect: false }),
+      ...(options.writeGate === undefined ? {} : { write: options.writeGate }),
+      ...(options.refresh === undefined ? {} : { refreshAuthorization: options.refresh }),
+    }
+    return {
+      target, context, fs, registered, deployments, installed, guard,
+      guardFunction: () => guardFunction,
+      call: (name: string, args: unknown) => {
+        const definition = installed.get(name) ?? registered.get(name)
+        if (definition === undefined) throw new Error(`${name} was not installed`)
+        return definition.execute(args, { signal: undefined })
+      },
+    }
+  }
+
+  it('reports the deployment read it cannot replace and the guard it installs', () => {
+    const missing = sourceHarness({ tools: [] })
+    const unavailable = installSourceSessionAccess(missing.target as never)
+    expect(unavailable).toMatchObject({ refusal: 'tool-unavailable' })
+    expect(missing.guard).toHaveBeenCalled()
+
+    const refused = sourceHarness({ tools: ['read'], registerThrows: 'read' })
+    expect(installSourceSessionAccess(refused.target as never)).toMatchObject({
+      refusal: 'register-refused', registrationFailure: { tool: 'read' },
+    })
+    expect(refused.guard).toHaveBeenCalled()
+  })
+
+  it('installs one replacement per admitted tool and refuses every other name', () => {
+    const h = sourceHarness({ tools: [...sharedToolNames('view'), 'write', 'edit'] })
+    const installed = installSourceSessionAccess(h.target as never)
+    expect(installed).toMatchObject({ readConfined: true, writeConfined: false })
+    // Path-bearing tools get a replacement; no-effect tools keep the deployment's own definition.
+    expect([...h.installed.keys()].sort()).toEqual(
+      SHARED_TOOL_PROFILES.filter(profile => profile.tier === 'view' && !profile.noFileEffect)
+        .map(profile => profile.name).sort(),
+    )
+
+    const guard = h.guardFunction() as (execution: { readonly name: string }) => string | undefined
+    for (const name of sharedToolNames('view')) expect(guard({ name })).toBeUndefined()
+    for (const name of ['write', 'edit', 'bash', 'pwsh', 'cua', 'plugin_manager', 'schedule_create', 'ghost']) {
+      expect(guard({ name })).toContain('may not use')
+      expect(h.installed.has(name)).toBe(false)
+    }
+  })
+
+  it('resolves each tool’s declared paths and delegates with their canonical form', async () => {
+    const h = sourceHarness({ tools: sharedToolNames('view') })
+    installSourceSessionAccess(h.target as never)
+
+    await expect(h.call('read', { file_path: 'inside.ts', offset: 2 })).resolves.toBe('ran')
+    expect(h.fs.resolve).toHaveBeenCalledWith('inside.ts', expect.objectContaining({ cwd: '/granted' }))
+    expect(h.deployments.get('read')!.execute).toHaveBeenCalledWith(
+      { file_path: '/granted/inside.ts', offset: 2 }, expect.anything(),
+    )
+    await expect(h.call('read_image', { file_path: 'image.png' })).resolves.toBe('ran')
+    expect(h.deployments.get('read_image')!.execute).toHaveBeenCalledWith(
+      { file_path: '/granted/image.png' }, expect.anything(),
+    )
+    // A pathless search reads the Session's working directory, which the replacement supplies as a path.
+    await expect(h.call('glob', { pattern: '**/*.ts' })).resolves.toBe('ran')
+    expect(h.fs.resolve).toHaveBeenCalledWith('/granted', expect.objectContaining({ cwd: '/granted' }))
+    expect(h.deployments.get('glob')!.execute).toHaveBeenCalledWith(
+      { pattern: '**/*.ts', path: '/granted' }, expect.anything(),
+    )
+    await expect(h.call('grep', { pattern: 'x', path: 'src' })).resolves.toBe('ran')
+    expect(h.deployments.get('grep')!.execute).toHaveBeenCalledWith(
+      { pattern: 'x', path: '/granted/src' }, expect.anything(),
+    )
+    await expect(h.call('present', {
+      files: [{ path: 'a.ts', description: 'A' }, { path: 'b.ts' }],
+    })).resolves.toBe('ran')
+    expect(h.deployments.get('present')!.execute).toHaveBeenCalledWith({
+      files: [{ path: '/granted/a.ts', description: 'A' }, { path: '/granted/b.ts' }],
+    }, expect.anything())
+    // No-filesystem-effect tools delegate without resolving anything.
+    h.fs.resolve.mockClear()
+    await expect(h.call('todo_write', { todos: [{ content: 'one' }] })).resolves.toBe('ran')
+    await expect(h.call('skill', { name: 'one' })).resolves.toBe('ran')
+    await expect(h.call('web_search', { queries: ['q'] })).resolves.toBe('ran')
+    await expect(h.call('web_fetch', { url: 'https://example.test' })).resolves.toBe('ran')
+    expect(h.fs.resolve).not.toHaveBeenCalled()
+    expect(h.deployments.get('todo_write')!.execute).toHaveBeenCalledWith(
+      { todos: [{ content: 'one' }] }, expect.anything(),
+    )
+  })
+
+  it('refuses every path outside the granted root and runs no tool body', async () => {
+    const h = sourceHarness({ tools: sharedToolNames('view') })
+    installSourceSessionAccess(h.target as never)
+    const outsideCalls: [string, unknown][] = [
+      ['read', { file_path: 'outside/secret.txt' }],
+      ['read_image', { file_path: 'outside/secret.png' }],
+      ['glob', { pattern: '**/*.ts', path: 'outside' }],
+      ['grep', { pattern: 'x', path: 'outside' }],
+      ['present', { files: [{ path: 'inside.ts' }, { path: 'outside/secret.txt' }] }],
+    ]
+    for (const [name, args] of outsideCalls) {
+      await expect(h.call(name, args)).rejects.toThrow('inside the workspace')
+    }
+
+    const malformed: [string, unknown][] = [
+      ['read', {}],
+      ['read_image', { file_path: 2 }],
+      ['glob', { pattern: 'x', path: '' }],
+      ['grep', { pattern: 'x', path: 2 }],
+      ['present', { files: [{ description: 'no path' }] }],
+      ['present', { files: 'not a list' }],
+    ]
+    for (const [name, args] of malformed) {
+      await expect(h.call(name, args)).rejects.toThrow('with the paths it declares')
+    }
+
+    // A resolution the filesystem refuses is the refusal: no verdict is guessed from the spelling.
+    const failing = sourceHarness({ tools: ['read'], resolve: async () => { throw new Error('resolution failed') } })
+    installSourceSessionAccess(failing.target as never)
+    await expect(failing.call('read', { file_path: 'inside.ts' })).rejects.toThrow('resolution failed')
+  })
+
+  it('confines every read of the session and refreshes its grants first', async () => {
+    const refresh = vi.fn(async () => {})
+    const h = sourceHarness({ refresh })
+    const installed = installSourceSessionAccess(h.target as never)
+    expect(installed).toMatchObject({ readConfined: true })
+    const confined = h.installed.get('read')!
+
+    // There is no owner bypass: the sandbox belongs to the Session, so every turn reads through it.
+    await expect(confined.execute({ file_path: 'x' }, { signal: undefined })).resolves.toBe('ran')
+    expect(refresh).toHaveBeenCalledTimes(1)
+    await expect(confined.execute({}, { signal: undefined })).rejects.toThrow('only use read with the paths')
+    await expect(confined.execute('not a record', { signal: undefined })).rejects.toThrow('only use read with the paths')
+    await expect(confined.execute({ file_path: 'outside' }, { signal: undefined })).rejects.toThrow('inside the workspace')
+    await expect(confined.execute({ file_path: 'inside.ts' }, { signal: undefined })).resolves.toBe('ran')
+    // Every call re-reads the grants before it consumes them, including one it then refuses.
+    expect(refresh).toHaveBeenCalledTimes(5)
+  })
+
+  it('powers the admitted view surface through the read wrapper it actually installed', async () => {
+    const h = sourceHarness({ tools: sharedToolNames('view') })
+    installSourceSessionAccess(h.target as never)
+    // The definition a Session would run is the wrapper, whose every path is resolved before the
+    // deployment's own body sees it.
+    await expect(h.call('read', { file_path: 'inside.ts', offset: 1 }))
+      .resolves.toBe('ran')
+    expect(h.fs.resolve).toHaveBeenCalledWith('inside.ts', expect.objectContaining({ cwd: '/granted' }))
+  })
+
+  it('keeps a view tool it could not register refused by the guard', () => {
+    const h = sourceHarness({ tools: sharedToolNames('view'), registerThrows: 'glob' })
+    const installed = installSourceSessionAccess(h.target as never)
+    expect(installed).toMatchObject({ readConfined: true, registrationFailure: { tool: 'glob' } })
+    expect(h.installed.has('glob')).toBe(false)
+    const guard = h.guardFunction() as (execution: { readonly name: string }) => string | undefined
+    expect(guard({ name: 'glob' })).toContain('may not use')
+    expect(guard({ name: 'grep' })).toBeUndefined()
+  })
+
+  it('leaves a view tool the deployment does not ship uninstalled and refused', () => {
+    const h = sourceHarness({ tools: ['read'] })
+    installSourceSessionAccess(h.target as never)
+    // Nothing casts the deployment's missing present tool into a permit: the guard only knows registered
+    // names.
+    const guard = h.guardFunction() as (execution: { readonly name: string }) => string | undefined
+    expect(guard({ name: 'present' })).toContain('may not use')
+    expect(h.installed.has('present')).toBe(false)
+  })
+
+  it('confines a source write under its share gate and policy', async () => {
+    const h = sourceHarness({ tools: ['read', 'write'], writeGate: { mayWrite: () => true } })
+    expect(installSourceSessionAccess(h.target as never)).toMatchObject({ readConfined: true, writeConfined: true })
+    const confined = h.installed.get('write')!
+
+    await expect(confined.execute({ file_path: 'inside.ts' }, { signal: undefined })).rejects.toThrow('named file with text content')
+    await expect(confined.execute('not a record', { signal: undefined })).rejects.toThrow('named file with text content')
+    await expect(confined.execute({ file_path: '../outside', content: 'x' }, { signal: undefined }))
+      .rejects.toThrow('inside the workspace')
+    const narrowing = sourceHarness({ tools: ['read', 'write'], writeGate: { mayWrite: vi.fn().mockReturnValueOnce(true).mockReturnValue(false) } })
+    expect(installSourceSessionAccess(narrowing.target as never).writeConfined).toBe(true)
+    await expect(narrowing.installed.get('write')!.execute({ file_path: 'inside.ts', content: 'x' }, { signal: undefined }))
+      .rejects.toThrow('does not allow writing')
+
+    const blocked = sourceHarness({ tools: ['read', 'write'], writeGate: { mayWrite: () => false } })
+    installSourceSessionAccess(blocked.target as never)
+    await expect(blocked.installed.get('write')!.execute({ file_path: 'inside.ts', content: 'x' }, { signal: undefined }))
+      .rejects.toThrow('does not allow writing')
+
+    h.target.write = { mayWrite: () => true }
+    const result = await confined.execute({ file_path: 'inside.ts', content: 'hello' }, { signal: undefined })
+    expect(result).toEqual({ path: 'inside.ts', operation: 'update', before: 'v0', after: 'v1' })
+    expect(h.fs.writeText).toHaveBeenCalled()
+  })
+
+  it('confines a source edit through the same root check and policy', async () => {
+    const h = sourceHarness({
+      tools: ['read', 'write', 'edit'],
+      writeGate: { mayWrite: vi.fn().mockReturnValue(true) },
+    })
+    expect(installSourceSessionAccess(h.target as never)).toMatchObject({ readConfined: true, writeConfined: true })
+    const edit = h.installed.get('edit')!
+
+    await expect(edit.execute({ file_path: 'inside.ts', old_string: '', new_string: 'b' }, { signal: undefined }))
+      .rejects.toThrow('replacing non-empty text')
+    await expect(edit.execute({ file_path: '', old_string: 'a', new_string: 'b' }, { signal: undefined }))
+      .rejects.toThrow('replacing non-empty text')
+    await expect(edit.execute({ file_path: 'inside.ts', old_string: 'a', new_string: 'a' }, { signal: undefined }))
+      .rejects.toThrow('replacing non-empty text')
+    await expect(edit.execute({ file_path: 'inside.ts', old_string: 'a' }, { signal: undefined }))
+      .rejects.toThrow('replacing non-empty text')
+    await expect(edit.execute({ file_path: 'outside.ts', old_string: 'a', new_string: 'b' }, { signal: undefined }))
+      .rejects.toThrow('inside the workspace')
+    // The intent comes from the shipped waterfall, and the edit is written under the Session policy.
+    const result = await edit.execute({ file_path: 'inside.ts', old_string: 'old', new_string: 'new', replace_all: true }, { signal: undefined })
+    expect(result).toEqual({ path: '/granted/inside.ts', before: 'old', after: 'new' })
+    expect(h.context.waterfall).toHaveBeenCalledWith('fs/edit-intent', '/granted/inside.ts', expect.anything(), expect.any(Function))
+    expect(h.fs.editText).toHaveBeenCalledWith(
+      '/granted/inside.ts',
+      { oldString: 'old', newString: 'new', replaceAll: true },
+      undefined,
+      undefined,
+      expect.objectContaining({ workspaceRoot: '/granted' }),
+    )
+
+    // A gate already closed when the edit starts refuses before the arguments are even read.
+    const closedEdit = sourceHarness({
+      tools: ['read', 'write', 'edit'],
+      writeGate: { mayWrite: () => false },
+    })
+    installSourceSessionAccess(closedEdit.target as never)
+    await expect(closedEdit.installed.get('edit')!.execute({
+      file_path: 'inside.ts', old_string: 'a', new_string: 'b',
+    }, { signal: undefined })).rejects.toThrow('does not allow writing')
+    // The replacement's own argument check refuses arguments it cannot read.
+    await expect(edit.execute('not a record', { signal: undefined })).rejects.toThrow('replacing non-empty text')
+
+    // A share that narrows while the edit intent awaits stops the edit before it reaches the backend.
+    const narrowing = sourceHarness({
+      tools: ['read', 'write', 'edit'],
+      writeGate: { mayWrite: vi.fn().mockReturnValueOnce(true).mockReturnValue(false) },
+    })
+    installSourceSessionAccess(narrowing.target as never)
+    await expect(narrowing.installed.get('edit')!.execute({
+      file_path: 'inside.ts', old_string: 'a', new_string: 'b',
+    }, { signal: undefined })).rejects.toThrow('does not allow writing')
+    expect(narrowing.fs.editText).not.toHaveBeenCalled()
+  })
+
+  it('refuses a write it could not register without losing the read', () => {
+    const h = sourceHarness({ tools: ['read', 'write'], writeGate: { mayWrite: () => true }, registerThrows: 'write' })
+    expect(installSourceSessionAccess(h.target as never)).toMatchObject({
+      readConfined: true, writeConfined: false, registrationFailure: { tool: 'write' },
+    })
+  })
+
+  it('keeps a write share’s edit refused when only the edit replacement failed', () => {
+    const h = sourceHarness({
+      tools: sharedToolNames('write'),
+      writeGate: { mayWrite: () => true },
+      registerThrows: 'edit',
+    })
+    const installed = installSourceSessionAccess(h.target as never)
+    expect(installed).toMatchObject({ readConfined: true, writeConfined: true, registrationFailure: { tool: 'edit' } })
+    const guard = h.guardFunction() as (execution: { readonly name: string }) => string | undefined
+    expect(guard({ name: 'edit' })).toContain('may not use')
+    expect(guard({ name: 'write' })).toBeUndefined()
+  })
+
+  it('refuses a no-effect tool once another definition answers to its name', () => {
+    const h = sourceHarness({ tools: [...sharedToolNames('view')] })
+    installSourceSessionAccess(h.target as never)
+    const guard = h.guardFunction() as (execution: { readonly name: string }) => string | undefined
+    // The definition the installation found at install time is the one it vouches for.
+    expect(guard({ name: 'todo_write' })).toBeUndefined()
+    // A scope registration that replaces it later is a different tool under a permitted name.
+    h.registered.set('todo_write', deploymentTool('todo_write'))
+    expect(guard({ name: 'todo_write' })).toContain('may not use')
+  })
+
+  it('guards every tool but this installation’s replacements', () => {
+    const h = sourceHarness({})
+    installSourceSessionAccess(h.target as never)
+    const provider = h.guardFunction() as ((execution: unknown) => unknown) | undefined
+    expect(provider).toBeDefined()
+    expect(provider?.({ arguments: {} })).toContain('may not use')
+    expect(provider?.({ arguments: {}, name: 'other' })).toContain('may not use')
+    expect(provider?.({ arguments: {}, name: 'read' })).toBeUndefined()
+    // A view Session installs no write or edit name, so the guard refuses the deployment's own.
+    expect(provider?.({ arguments: {}, name: 'write' })).toContain('may not use')
+    expect(provider?.({ arguments: {}, name: 'edit' })).toContain('may not use')
+    // A name the deployment has but this installation did not register is refused: the name is not
+    // evidence that a constrained definition would run.
+    expect(provider?.({ arguments: {}, name: 'glob' })).toContain('may not use')
+
+    const writable = sourceHarness({ tools: ['read', 'write'], writeGate: { mayWrite: () => true } })
+    installSourceSessionAccess(writable.target as never)
+    const writableGuard = writable.guardFunction() as ((execution: unknown) => unknown) | undefined
+    expect(writableGuard?.({ arguments: {}, name: 'write' })).toBeUndefined()
+    expect(writableGuard?.({ arguments: {}, name: 'edit' })).toContain('may not use')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/fork-registry-cross-process.e2e.ts b/packages/experimental/liveshare/tests/fork-registry-cross-process.e2e.ts
new file mode 100644
index 0000000000..2a8b050f78
--- /dev/null
+++ b/packages/experimental/liveshare/tests/fork-registry-cross-process.e2e.ts
@@ -0,0 +1,228 @@
+/**
+ * Two real OS processes writing one fork registry file.
+ *
+ * One DSH home can be served by several Host processes, and the registry keeps its children, its
+ * logical operations, and its withdrawals in that one file. A process that rewrites the file from the
+ * snapshot it read earlier drops whatever the other process committed in between, which loses a
+ * withdrawal it can no longer enforce or a served request it forks a second time. Each case here
+ * starts two child processes that both read the file, lets them write in a stated order, and asserts
+ * on the file they both finished with. Keyless, and both writers are real `node` processes running the
+ * registry source through tsx rather than two objects in this process.
+ */
+
+import { spawn, type ChildProcessWithoutNullStreams } from 'node:child_process'
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { createInterface } from 'node:readline'
+import { fileURLToPath, pathToFileURL } from 'node:url'
+import { afterAll, afterEach, describe, expect, it } from 'vitest'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+
+const SOURCE = pathToFileURL(fileURLToPath(new URL('../src/host/fork-registry.ts', import.meta.url))).href
+const REPOSITORY = fileURLToPath(new URL('../../../../', import.meta.url))
+const TSCONFIG = join(REPOSITORY, 'tsconfig.base.json')
+
+const SHARE = 'share-first'
+const REVOKED_AT = '2026-09-12T01:00:00.000Z'
+const VIEWER = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' }
+
+/**
+ * The writer each case starts: it reads the registry, reports `loaded`, waits for one line on stdin,
+ * applies the change its role names, reports `written`, and exits. Reading before the signal is what
+ * makes the two processes' snapshots overlap, which is the interleaving the registry has to survive.
+ */
+const WRITER_SOURCE = `
+import { ForkRegistry } from ${JSON.stringify(SOURCE)}
+
+const [file, role] = process.argv.slice(2)
+const registry = new ForkRegistry(file)
+process.stdout.write('loaded\\n')
+await new Promise((resolve) => { process.stdin.once('data', resolve) })
+
+const record = async (childSessionId, shareId, operationKey) => {
+  await registry.record({
+    childSessionId,
+    shareId,
+    sourceSessionId: 'session-source',
+    boundary: 3,
+    creator: ${JSON.stringify(VIEWER)},
+    createdAt: '2026-09-12T00:00:00.000Z',
+  })
+  await registry.recordOperation({
+    key: operationKey,
+    childSessionId,
+    boundary: 3,
+    ready: true,
+    status: 200,
+    body: { result: { ok: true } },
+  })
+}
+
+if (role === 'record-first') await record('child-first', 'share-first', 'operation-first')
+if (role === 'record-second') await record('child-second', 'share-second', 'operation-second')
+if (role === 'record-close') await record('child-close', 'share-second', 'operation-close')
+if (role === 'revoke') await registry.revokeShare('share-first', ${JSON.stringify(REVOKED_AT)})
+process.stdout.write('written\\n')
+`
+
+const directories: string[] = []
+const writers: ChildProcessWithoutNullStreams[] = []
+
+afterEach(async () => {
+  for (const writer of writers.splice(0)) writer.kill('SIGKILL')
+  for (const directory of directories.splice(0)) await rm(directory, { recursive: true, force: true })
+})
+
+afterAll(async () => {
+  for (const directory of scriptDirectories.splice(0)) await rm(directory, { recursive: true, force: true })
+})
+
+/** One registry document as the file holds it. */
+interface RegistryDocument {
+  readonly forks?: readonly { readonly childSessionId?: unknown; readonly revokedAt?: unknown }[]
+  readonly operations?: readonly { readonly key?: unknown }[]
+}
+
+/** One spawned writer: its stdout lines in order, its exit code, and its stderr for a failure report. */
+interface Writer {
+  readonly process: ChildProcessWithoutNullStreams
+  /** Release the writer to apply its change; closing its stdin lets the process exit. */
+  readonly go: () => void
+  readonly nextLine: () => Promise<string>
+  readonly exited: Promise<number | null>
+}
+
+const scriptDirectories: string[] = []
+let script: Promise<string> | undefined
+
+/**
+ * The writer script, written once into a temporary directory. It is a real module file so the child
+ * runs the registry the same way any other process does, rather than through an inline `-e` program.
+ * @returns Path of the script file.
+ */
+async function writerScript(): Promise<string> {
+  script ??= (async (): Promise<string> => {
+    const directory = await mkdtemp(join(tmpdir(), 'dsh-fork-registry-writer-'))
+    scriptDirectories.push(directory)
+    const path = join(directory, 'writer.mts')
+    await writeFile(path, WRITER_SOURCE)
+    return path
+  })()
+  return await script
+}
+
+/** One temporary directory holding the registry both writers share. */
+async function directory(): Promise<string> {
+  const created = await mkdtemp(join(tmpdir(), 'dsh-fork-registry-2proc-'))
+  directories.push(created)
+  return created
+}
+
+/** Start one child process against `file`, holding the registry unmodified until it is signalled. */
+async function start(file: string, role: string): Promise<Writer> {
+  const child = spawn(process.execPath, ['--import', import.meta.resolve('tsx/esm'), await writerScript(), file, role], {
+    cwd: REPOSITORY,
+    // The child imports the registry source, whose workspace imports resolve through this tsconfig's
+    // paths; tsx would otherwise look for one beside the temporary script.
+    env: { ...process.env, TSX_TSCONFIG_PATH: TSCONFIG },
+  })
+  writers.push(child)
+  let stderr = ''
+  child.stderr.setEncoding('utf8')
+  child.stderr.on('data', (chunk: string) => { stderr += chunk })
+  const exited = new Promise<number | null>((resolve) => { child.once('exit', (code) => { resolve(code) }) })
+  const queue: string[] = []
+  const waiting: ((line: string) => void)[] = []
+  createInterface({ input: child.stdout }).on('line', (line: string) => {
+    const resolve = waiting.shift()
+    if (resolve === undefined) queue.push(line)
+    else resolve(line)
+  })
+  return {
+    process: child,
+    // The writer waits on its own stdin, which stays open until this end closes it; an open pipe would
+    // otherwise keep the child alive after its change and hold this test past its timeout.
+    go: () => { child.stdin.end('go\n') },
+    nextLine: async (): Promise<string> => {
+      const queued = queue.shift()
+      if (queued !== undefined) return queued
+      return await new Promise<string>((resolve, reject) => {
+        waiting.push(resolve)
+        void exited.then((code) => {
+          reject(new Error(`writer ${role} exited with ${String(code)} before reporting: ${stderr}`))
+        })
+      })
+    },
+    exited,
+  }
+}
+
+/** Wait for one writer to apply its change, reporting its stderr when it failed instead. */
+async function wrote(writer: Writer): Promise<void> {
+  expect(await writer.nextLine()).toBe('written')
+  expect(await writer.exited).toBe(0)
+}
+
+/** The child session ids the document holds. */
+function childrenOf(document: RegistryDocument): string[] {
+  return (document.forks ?? []).map(entry => String(entry.childSessionId))
+}
+
+/** The operation keys the document holds. */
+function operationsOf(document: RegistryDocument): string[] {
+  return (document.operations ?? []).map(entry => String(entry.key))
+}
+
+/** Parse the registry file both writers finished with. */
+async function documentOf(file: string): Promise<RegistryDocument> {
+  return JSON.parse(await readFile(file, 'utf8')) as RegistryDocument
+}
+
+describe('fork registry across two processes', () => {
+  it('keeps a record and an operation from each process that wrote from its own read', { timeout: 30_000 }, async () => {
+    const file = join(await directory(), 'forks.json')
+    const first = await start(file, 'record-first')
+    const second = await start(file, 'record-second')
+    expect(await first.nextLine()).toBe('loaded')
+    expect(await second.nextLine()).toBe('loaded')
+
+    // Both snapshots are empty, so a writer that replaces the file from its snapshot drops the other.
+    first.go()
+    second.go()
+    await wrote(first)
+    await wrote(second)
+
+    const document = await documentOf(file)
+    expect(childrenOf(document).sort()).toEqual(['child-first', 'child-second'])
+    expect(operationsOf(document).sort()).toEqual(['operation-first', 'operation-second'])
+  })
+
+  it('keeps a withdrawal written by one process while the other records a child from its earlier read', { timeout: 30_000 }, async () => {
+    const file = join(await directory(), 'forks.json')
+    const seeded = new ForkRegistry(file)
+    await seeded.record({
+      childSessionId: 'child-source',
+      shareId: SHARE,
+      sourceSessionId: 'session-source',
+      boundary: 3,
+      creator: VIEWER,
+      createdAt: '2026-09-12T00:00:00.000Z',
+    })
+    const revoker = await start(file, 'revoke')
+    const recorder = await start(file, 'record-close')
+    expect(await revoker.nextLine()).toBe('loaded')
+    expect(await recorder.nextLine()).toBe('loaded')
+
+    // The withdrawal commits first; the recorder's snapshot still reads that share as live.
+    revoker.go()
+    await wrote(revoker)
+    recorder.go()
+    await wrote(recorder)
+
+    const document = await documentOf(file)
+    expect(childrenOf(document).sort()).toEqual(['child-close', 'child-source'])
+    expect(document.forks?.find(entry => entry.childSessionId === 'child-source')?.revokedAt).toBe(REVOKED_AT)
+    expect(operationsOf(document)).toEqual(['operation-close'])
+  })
+})
diff --git a/packages/experimental/liveshare/tests/fork-registry-durability.spec.ts b/packages/experimental/liveshare/tests/fork-registry-durability.spec.ts
new file mode 100644
index 0000000000..3908822078
--- /dev/null
+++ b/packages/experimental/liveshare/tests/fork-registry-durability.spec.ts
@@ -0,0 +1,147 @@
+/**
+ * What survives a restart, and what an older file is allowed to mean.
+ *
+ * Withdrawing a share must still be in force after the host reloads its registry, and a file written
+ * before the operation records existed — or one carrying an entry that no longer validates — must not
+ * be replayed as a served request.
+ */
+
+import { mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import { READ_ONLY_FORK_CEILING } from '../src/host/fork-policy.ts'
+
+const creator = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' }
+const child = 'session-child'
+
+const temporary: string[] = []
+afterEach(() => {
+  for (const directory of temporary.splice(0)) rmSync(directory, { recursive: true, force: true })
+})
+
+/** One registry file holding a single child of one share. */
+function file(): string {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-registry-'))
+  temporary.push(directory)
+  return join(directory, 'forks.json')
+}
+
+function record(forks: ForkRegistry): Promise<void> {
+  return forks.record({
+    childSessionId: child,
+    shareId: 'share-1',
+    sourceSessionId: 'session-shared',
+    boundary: 3,
+    creator,
+    createdAt: '2026-09-12T00:00:00.000Z',
+  })
+}
+
+describe('fork registry durability', () => {
+  it('keeps a withdrawal in force after the host reloads the file', async () => {
+    const path = file()
+    const before = new ForkRegistry(path)
+    await record(before)
+    await before.revokeShare('share-1', '2026-09-12T01:00:00.000Z')
+
+    const after = new ForkRegistry(path)
+
+    expect(after.find(child)?.revokedAt).toBe('2026-09-12T01:00:00.000Z')
+    expect(after.allowsPrompt(child, creator)).toMatchObject({ ok: false, code: 'fork-source-revoked' })
+  })
+
+  it('withdraws only the children that existed when the share was withdrawn', async () => {
+    const path = file()
+    const before = new ForkRegistry(path)
+    await record(before)
+    await before.revokeShare('share-1', '2026-09-12T01:00:00.000Z')
+
+    // The owner turns the fork switch back on and a new child is recorded. It is not a child the earlier
+    // withdrawal named, so neither this process nor a reload may mark it revoked.
+    const reopened = new ForkRegistry(path)
+    await reopened.record({
+      childSessionId: 'session-child-new',
+      shareId: 'share-1',
+      sourceSessionId: 'session-shared',
+      boundary: 3,
+      creator,
+      createdAt: '2026-09-12T02:00:00.000Z',
+    })
+    reopened.installEnforcement(child, READ_ONLY_FORK_CEILING)
+    reopened.installEnforcement('session-child-new', READ_ONLY_FORK_CEILING)
+    expect(reopened.allowsPrompt('session-child-new', creator)).toEqual({ ok: true })
+
+    const restarted = new ForkRegistry(path)
+    restarted.installEnforcement(child, READ_ONLY_FORK_CEILING)
+    restarted.installEnforcement('session-child-new', READ_ONLY_FORK_CEILING)
+    expect(restarted.find(child)?.revokedAt).toBe('2026-09-12T01:00:00.000Z')
+    expect(restarted.find('session-child-new')?.revokedAt).toBeUndefined()
+    expect(restarted.allowsPrompt(child, creator)).toMatchObject({ ok: false, code: 'fork-source-revoked' })
+    expect(restarted.allowsPrompt('session-child-new', creator)).toEqual({ ok: true })
+  })
+
+  it('withdraws a child recorded after the share was withdrawn when the share is withdrawn again', async () => {
+    const path = file()
+    const forks = new ForkRegistry(path)
+    await record(forks)
+    await forks.revokeShare('share-1', '2026-09-12T01:00:00.000Z')
+    await forks.record({
+      childSessionId: 'session-child-new',
+      shareId: 'share-1',
+      sourceSessionId: 'session-shared',
+      boundary: 3,
+      creator,
+      createdAt: '2026-09-12T02:00:00.000Z',
+    })
+    // The fork switch is turned off again: this is a new withdrawal, so it names the new child too.
+    await forks.revokeShare('share-1', '2026-09-12T03:00:00.000Z')
+
+    const restarted = new ForkRegistry(path)
+    expect(restarted.find('session-child-new')?.revokedAt).toBe('2026-09-12T03:00:00.000Z')
+  })
+
+  it('loads a file written before operation records existed', async () => {
+    const path = file()
+    const forks = new ForkRegistry(path)
+    await record(forks)
+    const document = JSON.parse(readFileSync(path, 'utf8')) as Record<string, unknown>
+    delete document.operations
+    writeFileSync(path, JSON.stringify(document))
+
+    const reloaded = new ForkRegistry(path)
+
+    expect(reloaded.find(child)?.childSessionId).toBe(child)
+    expect(reloaded.operationOf('anything')).toBeUndefined()
+  })
+
+  it('keeps an operation entry that predates readiness, refused rather than replayed', async () => {
+    const path = file()
+    const forks = new ForkRegistry(path)
+    await record(forks)
+    const document = JSON.parse(readFileSync(path, 'utf8')) as Record<string, unknown>
+    // An entry from a version that recorded a child but no readiness flag. It must keep the child it
+    // named — a retry cannot be allowed to create a second one — and must not read as a success.
+    document.operations = [{
+      key: 'legacy', childSessionId: child, boundary: 3, status: 200, body: { result: { ok: true } },
+    }]
+    writeFileSync(path, JSON.stringify(document))
+
+    const reloaded = new ForkRegistry(path)
+
+    expect(reloaded.operationOf('legacy')).toMatchObject({
+      key: 'legacy', childSessionId: child, boundary: 3, ready: false,
+    })
+  })
+
+  it('keeps a reserved request that never created a child free to create one', async () => {
+    const path = file()
+    const forks = new ForkRegistry(path)
+    await forks.reserveOperation('identity', 3)
+
+    const reloaded = new ForkRegistry(path)
+
+    expect(reloaded.operationOf('identity')).toMatchObject({ boundary: 3, childSessionId: '', ready: false })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/fork-registry-errors.spec.ts b/packages/experimental/liveshare/tests/fork-registry-errors.spec.ts
new file mode 100644
index 0000000000..9f5dcb00ca
--- /dev/null
+++ b/packages/experimental/liveshare/tests/fork-registry-errors.spec.ts
@@ -0,0 +1,281 @@
+/** Fork registry persistence failures, corrupt input, and withdrawal replay. */
+
+import { mkdirSync, mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import { ForkRegistry, type ForkRecord } from '../src/host/fork-registry.ts'
+import { READ_ONLY_FORK_CEILING } from '../src/host/fork-policy.ts'
+
+const directories: string[] = []
+afterEach(() => {
+  for (const directory of directories.splice(0)) rmSync(directory, { recursive: true, force: true })
+})
+
+function registryFile(): string {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-registry-errors-'))
+  directories.push(directory)
+  return join(directory, 'forks.json')
+}
+
+function record(childSessionId: string, overrides: Partial<ForkRecord> = {}): ForkRecord {
+  return {
+    childSessionId, shareId: 'share-1', sourceSessionId: 'session-1', boundary: 3,
+    creator: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    createdAt: '2026-01-01T00:00:00.000Z',
+    ...overrides,
+  }
+}
+
+function document(value: unknown): string {
+  return JSON.stringify(value)
+}
+
+describe('fork registry input it cannot use', () => {
+  it('starts empty from a missing, corrupt, or non-object file and refuses to overwrite it', async () => {
+    for (const contents of [undefined, '{not json', 'null', '[]', '{"version":2,"forks":[]}']) {
+      const file = registryFile()
+      if (contents !== undefined) writeFileSync(file, contents)
+      const registry = new ForkRegistry(file)
+      expect(registry.find('child')).toBeUndefined()
+      if (contents === undefined) continue
+      // A file the write path cannot read is never replaced.
+      await expect(registry.record(record('child'))).rejects.toThrow()
+      expect(readFileSync(file, 'utf8')).toBe(contents)
+    }
+  })
+
+  it('drops entries that fail their own validation and keeps the rest', () => {
+    const file = registryFile()
+    writeFileSync(file, document({
+      version: 1,
+      forks: [
+        null, {}, { ...record('valid'), boundary: 1.5 }, { ...record('valid'), creator: { providerId: 'p' } },
+        { ...record('invalid-creator'), creator: null }, { ...record('invalid-creator'), creator: 'owner' },
+        { ...record('valid'), revokedAt: 42 },
+        record('valid'),
+      ],
+      operations: [
+        null, {}, { key: '' }, { key: 'no-child' }, { key: 'bad-boundary', childSessionId: '', boundary: 1.5 },
+        { key: 'nostatus', childSessionId: 'child', boundary: 1 },
+        { key: 'ok', childSessionId: 'child', boundary: 2, ready: true, status: 200, body: { ok: true } },
+      ],
+    }))
+    const registry = new ForkRegistry(file)
+    expect(registry.find('valid')).toBeDefined()
+    expect(registry.operationOf('nostatus')).toMatchObject({ status: 0 })
+    expect(registry.find('invalid-creator')).toBeUndefined()
+    expect(registry.operationOf('ok')).toEqual({
+      key: 'ok', childSessionId: 'child', boundary: 2, ready: true, status: 200, body: { ok: true },
+    })
+    expect(registry.operationOf('no-child')).toBeUndefined()
+    expect(registry.operationOf('bad-boundary')).toBeUndefined()
+  })
+
+  it('treats an unreadable path as empty and retries a failed batch on the next change', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    // A directory where the file belongs makes the first commit fail.
+    mkdirSync(file)
+    await expect(registry.record(record('first'))).rejects.toThrow()
+    rmSync(file, { recursive: true, force: true })
+    // The retained batch is written together with the next change.
+    await registry.record(record('second'))
+    const document = JSON.parse(readFileSync(file, 'utf8')) as { forks: ForkRecord[] }
+    expect(document.forks.map(entry => entry.childSessionId).sort()).toEqual(['first', 'second'])
+  })
+
+  it('refuses a path that cannot be read at all and still writes once it can', async () => {
+    const directory = mkdtempSync(join(tmpdir(), 'liveshare-registry-dir-'))
+    directories.push(directory)
+    const path = join(directory, 'as-a-directory')
+    mkdirSync(path)
+    const registry = new ForkRegistry(path)
+    expect(registry.find('child')).toBeUndefined()
+    await expect(registry.record(record('child'))).rejects.toThrow()
+  })
+})
+
+describe('withdrawal replay', () => {
+  it('writes the first withdrawal even with no known child, and not the repeat', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    await registry.revokeShare('share-1', '2026-02-01T00:00:00.000Z')
+    expect(readFileSync(file, 'utf8')).toContain('"version": 1')
+    rmSync(file)
+    // The same withdrawal is already in force for this process, so no write is owed.
+    await registry.revokeShare('share-1', '2026-02-01T00:00:00.000Z')
+    expect(() => readFileSync(file, 'utf8')).toThrow()
+  })
+
+  it('retries a withdrawal whose commit failed and revokes the children it knew', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    await registry.record(record('child'))
+    // A directory where the file belongs makes the withdrawal's commit fail.
+    rmSync(file)
+    mkdirSync(file)
+    await expect(registry.revokeShare('share-1', '2026-02-01T00:00:00.000Z')).rejects.toThrow()
+    rmSync(file, { recursive: true, force: true })
+
+    // The next withdrawal of the same share retries the batch it still owes.
+    await registry.revokeShare('share-1', '2026-02-01T00:00:00.000Z')
+    const saved = JSON.parse(readFileSync(file, 'utf8')) as { forks: ForkRecord[] }
+    expect(saved.forks.find(entry => entry.childSessionId === 'child')?.revokedAt).toBe('2026-02-01T00:00:00.000Z')
+  })
+
+  it('does not retry a withdrawal a new child superseded', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    await registry.record(record('child'))
+    rmSync(file)
+    mkdirSync(file)
+
+    // A new child of the share is recorded while the withdrawal's commit is failing. The child exists
+    // after that withdrawal, so the failed batch must not be replayed over it later.
+    const withdrawal = registry.revokeShare('share-1', '2026-02-01T00:00:00.000Z')
+    const recorded = registry.record(record('new-child'))
+    await expect(withdrawal).rejects.toThrow()
+    await expect(recorded).rejects.toThrow()
+    rmSync(file, { recursive: true, force: true })
+    await registry.record(record('new-child'))
+
+    const saved = JSON.parse(readFileSync(file, 'utf8')) as { forks: ForkRecord[] }
+    // The withdrawal still names the child it saw; the child recorded after it stays live.
+    expect(saved.forks.find(entry => entry.childSessionId === 'child')?.revokedAt).toBe('2026-02-01T00:00:00.000Z')
+    expect(saved.forks.find(entry => entry.childSessionId === 'new-child')?.revokedAt).toBeUndefined()
+  })
+
+  it('applies a withdrawal to a child another process recorded and skips one already revoked', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    // Another process records these after this host read its own copy.
+    writeFileSync(file, document({ version: 1, forks: [
+      record('other-process'),
+      record('already-revoked', { revokedAt: '2026-01-01T00:00:00.000Z' }),
+    ] }))
+    await registry.revokeShare('share-1', '2026-02-01T00:00:00.000Z')
+    const saved = JSON.parse(readFileSync(file, 'utf8')) as { forks: ForkRecord[] }
+    expect(saved.forks.map(entry => entry.revokedAt)).toEqual([
+      '2026-02-01T00:00:00.000Z', '2026-01-01T00:00:00.000Z',
+    ])
+  })
+
+  it('revokes only unrevoked children of the named share and keeps their history', async () => {
+    const file = registryFile()
+    writeFileSync(file, document({
+      version: 1,
+      forks: [
+        record('a'),
+        record('b', { revokedAt: '2026-01-01T00:00:00.000Z' }),
+        record('c', { shareId: 'other' }),
+      ],
+    }))
+    const registry = new ForkRegistry(file)
+    await registry.revokeShare('share-1', '2026-02-01T00:00:00.000Z')
+    expect(registry.find('a')?.revokedAt).toBe('2026-02-01T00:00:00.000Z')
+    expect(registry.find('b')?.revokedAt).toBe('2026-01-01T00:00:00.000Z')
+    expect(registry.find('c')?.revokedAt).toBeUndefined()
+  })
+})
+
+describe('records and enforcement after a merge', () => {
+  it('merges this process changes with entries another process added', async () => {
+    const file = registryFile()
+    writeFileSync(file, document({ version: 1, forks: [record('existing')] }))
+    const registry = new ForkRegistry(file)
+    await registry.record(record('added'))
+    const saved = JSON.parse(readFileSync(file, 'utf8')) as { forks: ForkRecord[] }
+    expect(saved.forks.map(entry => entry.childSessionId).sort()).toEqual(['added', 'existing'])
+  })
+
+  it('keeps an existing revocation when this process replaces the same record', async () => {
+    const file = registryFile()
+    writeFileSync(file, document({ version: 1, forks: [record('a', { revokedAt: '2026-01-01T00:00:00.000Z' })] }))
+    const registry = new ForkRegistry(file)
+    await registry.record(record('a', { boundary: 9 }))
+    const saved = JSON.parse(readFileSync(file, 'utf8')) as { forks: ForkRecord[] }
+    expect(saved.forks[0]).toMatchObject({ boundary: 9, revokedAt: '2026-01-01T00:00:00.000Z' })
+  })
+
+  it('answers one operation only for its own key, and reserves a request once', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    await registry.reserveOperation('key', 4)
+    expect(registry.operationOf('key')).toMatchObject({ key: 'key', boundary: 4, childSessionId: '' })
+    await registry.reserveOperation('key', 9)
+    expect(registry.operationOf('key')?.boundary).toBe(4)
+    await registry.recordOperation({
+      key: 'key', childSessionId: 'child', boundary: 4, ready: true, status: 200, body: { ok: true },
+    })
+    expect(registry.operationOf('key')).toMatchObject({ childSessionId: 'child', ready: true })
+  })
+
+  it('retains a failed operation batch for the next change', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    mkdirSync(file)
+    await expect(registry.recordOperation({
+      key: 'first', childSessionId: 'child-a', boundary: 1, ready: true, status: 200, body: {},
+    })).rejects.toThrow()
+    rmSync(file, { recursive: true, force: true })
+    await registry.recordOperation({
+      key: 'second', childSessionId: 'child-b', boundary: 2, ready: true, status: 200, body: {},
+    })
+    const saved = JSON.parse(readFileSync(file, 'utf8')) as { operations: { key: string }[] }
+    expect(saved.operations.map(entry => entry.key).sort()).toEqual(['first', 'second'])
+  })
+
+  it('drops a retained change a later change replaced', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    mkdirSync(file)
+    const first = registry.record(record('child', { boundary: 1 }))
+    const second = registry.record(record('child', { boundary: 2 }))
+    await expect(first).rejects.toThrow()
+    await expect(second).rejects.toThrow()
+    rmSync(file, { recursive: true, force: true })
+    await registry.record(record('other'))
+    const saved = JSON.parse(readFileSync(file, 'utf8')) as { forks: ForkRecord[] }
+    expect(saved.forks.find(entry => entry.childSessionId === 'child')?.boundary).toBe(2)
+  })
+
+  it('drops a retained operation a later operation replaced', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    mkdirSync(file)
+    const first = registry.recordOperation({
+      key: 'key', childSessionId: 'child-a', boundary: 1, ready: true, status: 200, body: { version: 1 },
+    })
+    const second = registry.recordOperation({
+      key: 'key', childSessionId: 'child-b', boundary: 1, ready: true, status: 200, body: { version: 2 },
+    })
+    await expect(first).rejects.toThrow()
+    await expect(second).rejects.toThrow()
+    rmSync(file, { recursive: true, force: true })
+    await registry.record(record('other'))
+    const saved = JSON.parse(readFileSync(file, 'utf8')) as { operations: { key: string; body: unknown }[] }
+    expect(saved.operations.find(entry => entry.key === 'key')?.body).toEqual({ version: 2 })
+  })
+
+  it('tracks each child ceiling only after its record exists', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    expect(registry.installEnforcement('absent', READ_ONLY_FORK_CEILING)).toBe(false)
+    await registry.record(record('child'))
+    expect(registry.enforcedCeiling('child')).toBeUndefined()
+    expect(registry.installEnforcement('child', READ_ONLY_FORK_CEILING)).toBe(true)
+    expect(registry.enforcedCeiling('child')).toEqual(READ_ONLY_FORK_CEILING)
+    registry.releaseEnforcement('child')
+    expect(registry.enforcedCeiling('child')).toBeUndefined()
+  })
+
+  it('lists children by creator and by share', async () => {
+    const file = registryFile()
+    const registry = new ForkRegistry(file)
+    await registry.record(record('a'))
+    await registry.record(record('b', { creator: { providerId: 'p', tenantId: 't', subjectId: 'bob' } }))
+    expect(registry.listForCreator({ providerId: 'p', tenantId: 't', subjectId: 'alice' }).map(entry => entry.childSessionId)).toEqual(['a'])
+    expect(registry.listForShare('share-1').map(entry => entry.childSessionId)).toEqual(['a', 'b'])
+  })
+})
diff --git a/packages/experimental/liveshare/tests/gateway-access-state-replay.spec.ts b/packages/experimental/liveshare/tests/gateway-access-state-replay.spec.ts
new file mode 100644
index 0000000000..3f24802b5c
--- /dev/null
+++ b/packages/experimental/liveshare/tests/gateway-access-state-replay.spec.ts
@@ -0,0 +1,168 @@
+/** Real WS/IPC barriers observe which committed access state the gateway re-registers. */
+
+import { randomUUID } from 'node:crypto'
+import { spawn, type ChildProcess } from 'node:child_process'
+import { once } from 'node:events'
+import { fileURLToPath } from 'node:url'
+import { WebSocket, WebSocketServer } from 'ws'
+import { describe, expect, it, onTestFinished } from 'vitest'
+import {
+  parseTunnelWorkerEvent,
+  type ShareAccessStateFrame,
+  type TunnelShareSpec,
+  type TunnelRegistrationToken,
+  type TunnelWorkerCommand,
+  type TunnelWorkerEvent,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+
+type RequestEvent = Extract<TunnelWorkerEvent, { type: 'share-rpc-request' }>
+
+async function harness() {
+  const server = new WebSocketServer({ host: '127.0.0.1', port: 0 })
+  const sockets: Array<{ socket: WebSocket; registration: URL }> = []
+  const processState: { child?: ChildProcess } = {}
+  let closing: Promise<void> | undefined
+  const close = (): Promise<void> => {
+    closing ??= (async () => {
+      const child = processState.child
+      if (child !== undefined && child.exitCode === null && child.signalCode === null) {
+        const exited = once(child, 'close')
+        const kill = setTimeout(() => { child?.kill('SIGKILL') }, 2_000)
+        child.kill('SIGTERM')
+        try {
+          await exited
+        } finally {
+          clearTimeout(kill)
+        }
+      }
+      for (const { socket } of sockets) socket.terminate()
+      await new Promise<void>((resolve, reject) => {
+        server.close((error) => { if (error === undefined) resolve(); else reject(error) })
+      })
+    })()
+    return closing
+  }
+  onTestFinished(close)
+  server.on('connection', (socket, request) => {
+    sockets.push({ socket, registration: new URL(request.url ?? '/', 'http://relay.invalid') })
+  })
+  await once(server, 'listening')
+  const address = server.address()
+  if (address === null || typeof address === 'string') throw new Error('Relay fixture did not bind a TCP port')
+  const child = processState.child = spawn(process.execPath, [
+    '--import', 'tsx/esm', fileURLToPath(new URL('../src/owner-gateway/cli.ts', import.meta.url)),
+  ], { stdio: ['ignore', 'pipe', 'pipe', 'ipc'] })
+  child.stdout?.resume()
+  let diagnostics = ''
+  child.stderr?.on('data', (data: Buffer) => { diagnostics += data.toString() })
+  const events: TunnelWorkerEvent[] = []
+  child.on('message', (value) => {
+    const event = parseTunnelWorkerEvent(value)
+    if (event !== undefined) events.push(event)
+  })
+  const send = (command: TunnelWorkerCommand): void => { child?.send(command) }
+  const share: TunnelShareSpec = {
+    shareId: 'share', sessionId: 'session', sessionTitle: 'session', accessMode: 'open',
+    relay: `http://127.0.0.1:${String(address.port)}`, gatewayToken: 'token', ownerDisplayName: 'owner',
+    allowedSubjectIds: ['original-viewer'], sessionMode: 'write', allowsFork: true,
+    expiresAt: '2030-01-01T00:00:00Z',
+  }
+  const registrationToken = randomUUID() as TunnelRegistrationToken
+  const replacementToken = randomUUID() as TunnelRegistrationToken
+  let markerId = 0
+  const barrier = async (socket: WebSocket): Promise<void> => {
+    const id = ++markerId
+    socket.send(JSON.stringify({
+      type: 'share-rpc', id, body: { marker: id },
+      actor: { providerId: 'mock', tenantId: 'tenant', subjectId: 'barrier' },
+    }))
+    await expect.poll(() => events.some(event => event.type === 'share-rpc-request' && event.id === id)).toBe(true)
+    const request = events.find((event): event is RequestEvent => event.type === 'share-rpc-request' && event.id === id)
+    if (request === undefined) throw new Error('Gateway did not reach the WS observation barrier')
+    send({ type: 'share-rpc-response', registrationToken: request.registrationToken, token: request.token, shareId: request.shareId, id,
+      status: 200, body: { marker: id } })
+  }
+  await expect.poll(() => {
+    if (child?.exitCode !== null || child?.signalCode !== null) throw new Error(`Gateway exited: ${diagnostics}`)
+    return events.some(event => event.type === 'ready')
+  }, { timeout: 20_000 }).toBe(true)
+  return { sockets, events, send, share, registrationToken, replacementToken, barrier, close }
+}
+
+function snapshot(version: number, sessionMode: ShareAccessStateFrame['sessionMode']): ShareAccessStateFrame {
+  return { type: 'share-access-state', version, sessionMode, accessMode: 'selected',
+    allowedSubjectIds: ['remaining-viewer'] }
+}
+
+function registrationFields(url: URL) {
+  return {
+    mode: url.searchParams.get('sessionMode'),
+    fork: url.searchParams.get('allowsFork'),
+    accessMode: url.searchParams.get('accessMode'),
+    subjects: url.searchParams.getAll('allowedSubjectId'),
+    expiry: url.searchParams.get('expiresAt'),
+  }
+}
+
+describe('Gateway committed access-state replay', () => {
+  it('keeps the newest socket snapshot for reconnect and rejects older or equal versions', async () => {
+    const h = await harness()
+    h.send({ type: 'add-share', registrationToken: h.registrationToken, share: h.share })
+    await expect.poll(() => h.sockets.length).toBe(1)
+    const original = h.sockets[0]!
+    expect(original.registration.searchParams.has('registrationToken')).toBe(false)
+    expect(original.registration.toString()).not.toContain(h.registrationToken)
+    expect(registrationFields(original.registration)).toMatchObject({ mode: 'write', fork: '1' })
+    original.socket.send(JSON.stringify(snapshot(10, 'view')))
+    original.socket.send(JSON.stringify(snapshot(11, 'view')))
+    original.socket.send(JSON.stringify(snapshot(10, 'write')))
+    original.socket.send(JSON.stringify(snapshot(11, 'write')))
+    await h.barrier(original.socket)
+    expect(h.events.filter(event => event.type === 'share-access-state')).toEqual([
+      { ...snapshot(10, 'view'), registrationToken: h.registrationToken, shareId: 'share' },
+      { ...snapshot(11, 'view'), registrationToken: h.registrationToken, shareId: 'share' },
+    ])
+    expect(h.sockets).toHaveLength(1)
+    const closed = once(original.socket, 'close')
+    original.socket.close()
+    await closed
+    await expect.poll(() => h.sockets.length, { timeout: 10_000 }).toBe(2)
+    const replacement = h.sockets[1]!
+    expect(registrationFields(replacement.registration)).toEqual({
+      mode: 'view', fork: null, accessMode: 'selected', subjects: ['remaining-viewer'], expiry: null,
+    })
+    // A fresh socket establishes its own version range, while its initial request preserves retained intent.
+    replacement.socket.send(JSON.stringify(snapshot(1, 'view')))
+    await h.barrier(replacement.socket)
+    expect(h.events.filter(event => event.type === 'share-access-state').at(-1))
+      .toEqual({ ...snapshot(1, 'view'), registrationToken: h.registrationToken, shareId: 'share' })
+    const replacementClosed = once(replacement.socket, 'close')
+    replacement.socket.close()
+    await replacementClosed
+    await expect.poll(() => h.sockets.length, { timeout: 10_000 }).toBe(3)
+    // The retired word committed no forking, so the retained state carries none into the next socket.
+    expect(registrationFields(h.sockets[2]!.registration)).toMatchObject({ mode: 'view', fork: null })
+    await h.close()
+  })
+
+  it('uses an explicit owner remove/add specification instead of the prior socket snapshot', async () => {
+    const h = await harness()
+    h.send({ type: 'add-share', registrationToken: h.registrationToken, share: h.share })
+    await expect.poll(() => h.sockets.length).toBe(1)
+    const original = h.sockets[0]!
+    original.socket.send(JSON.stringify(snapshot(20, 'view')))
+    await h.barrier(original.socket)
+    h.send({ type: 'remove-share', shareId: h.share.shareId })
+    h.send({ type: 'add-share', registrationToken: h.replacementToken, share: { ...h.share, sessionMode: 'view', allowedSubjectIds: ['owner-choice'] } })
+    await expect.poll(() => h.sockets.length).toBe(2)
+    const replacement = h.sockets[1]!
+    expect(registrationFields(replacement.registration)).toEqual({
+      mode: 'view', fork: '1', accessMode: 'open', subjects: ['owner-choice'], expiry: h.share.expiresAt,
+    })
+    replacement.socket.send(JSON.stringify(snapshot(1, 'view')))
+    await h.barrier(replacement.socket)
+    expect(h.events.filter(event => event.type === 'share-access-state').at(-1))
+      .toEqual({ ...snapshot(1, 'view'), registrationToken: h.replacementToken, shareId: 'share' })
+    await h.close()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/gateway-cli-entry.spec.ts b/packages/experimental/liveshare/tests/gateway-cli-entry.spec.ts
new file mode 100644
index 0000000000..895a01a040
--- /dev/null
+++ b/packages/experimental/liveshare/tests/gateway-cli-entry.spec.ts
@@ -0,0 +1,47 @@
+/**
+ * The owner gateway entry: it boots the worker only when the host that spawned it provided the IPC
+ * channel, and refuses loudly when the entry was started without one.
+ *
+ * The worker module is mocked: this spec covers the entry's own boot decision, not the socket work
+ * `runGatewayWorker` does.
+ */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+
+const runGatewayWorker = vi.hoisted(() => vi.fn())
+
+vi.mock('../src/owner-gateway/worker.ts', () => ({ runGatewayWorker }))
+
+// Bracket access keeps the reference out of the unbound-method lint rule.
+const originalSend = process['send']
+
+afterEach(() => {
+  Object.defineProperty(process, 'send', { value: originalSend, configurable: true, writable: true })
+  vi.resetModules()
+  runGatewayWorker.mockClear()
+})
+
+/** Install the IPC channel a spawned worker would have, or its absence. */
+function stubIpcChannel(send: ((event: unknown) => void) | undefined): void {
+  Object.defineProperty(process, 'send', { value: send, configurable: true, writable: true })
+}
+
+describe('owner gateway entry', () => {
+  it('refuses to boot when it was started without the IPC channel the host owns', async () => {
+    stubIpcChannel(undefined)
+    vi.resetModules()
+
+    await expect(import('../src/owner-gateway/cli.ts')).rejects
+      .toThrow('Liveshare gateway requires the owner worker IPC channel')
+    expect(runGatewayWorker).not.toHaveBeenCalled()
+  })
+
+  it('runs the worker once the host provided its IPC channel', async () => {
+    stubIpcChannel(vi.fn())
+    vi.resetModules()
+
+    await import('../src/owner-gateway/cli.ts')
+
+    expect(runGatewayWorker).toHaveBeenCalledOnce()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/gateway-command.spec.ts b/packages/experimental/liveshare/tests/gateway-command.spec.ts
new file mode 100644
index 0000000000..be9ef5caa3
--- /dev/null
+++ b/packages/experimental/liveshare/tests/gateway-command.spec.ts
@@ -0,0 +1,24 @@
+import { join } from 'node:path'
+import { fileURLToPath, pathToFileURL } from 'node:url'
+import { describe, expect, it } from 'vitest'
+import { gatewayWorkerCommand } from '../src/host/share-host.ts'
+
+const packageDir = fileURLToPath(new URL('..', import.meta.url))
+
+describe('Liveshare gateway worker command', () => {
+  it('loads the source worker through tsx when the host runs from src/host', () => {
+    // The module's own location, so the sibling worker path is expressed in this platform's
+    // separators: a POSIX literal turns into a drive-less URL path that Windows refuses to convert.
+    const command = gatewayWorkerCommand(pathToFileURL(join(packageDir, 'src/host/share-host.ts')).href)
+
+    expect(command.executable).toBe(process.execPath)
+    expect(command.args).toEqual(['--import', 'tsx/esm', join(packageDir, 'src/owner-gateway/cli.ts')])
+  })
+
+  it('loads the shipped worker beside the bundled lib entry', () => {
+    const command = gatewayWorkerCommand(pathToFileURL(join(packageDir, 'lib/index.js')).href)
+
+    expect(command.executable).toBe(process.execPath)
+    expect(command.args).toEqual([join(packageDir, 'lib/owner-gateway/cli.js')])
+  })
+})
diff --git a/packages/experimental/liveshare/tests/gateway-pending-rpc.spec.ts b/packages/experimental/liveshare/tests/gateway-pending-rpc.spec.ts
new file mode 100644
index 0000000000..b8f72aa633
--- /dev/null
+++ b/packages/experimental/liveshare/tests/gateway-pending-rpc.spec.ts
@@ -0,0 +1,54 @@
+import { describe, expect, it } from 'vitest'
+import { PendingRpc } from '../src/owner-gateway/pending-rpc.ts'
+
+describe('Liveshare pending viewer requests', () => {
+  it('distinguishes equal Relay ids across shares and socket generations', () => {
+    const pending = new PendingRpc<object>()
+    const aliceSocket = {}
+    const alice = pending.add('share-a', 1, aliceSocket)
+    const otherShare = pending.add('share-b', 1, {})
+    expect(pending.clear(aliceSocket)).toEqual([alice])
+    const bobSocket = {}
+    const bob = pending.add('share-a', 1, bobSocket)
+
+    expect(new Set([alice.token, bob.token, otherShare.token]).size).toBe(3)
+    expect(pending.take(alice)).toBeUndefined()
+    expect(pending.take(bob)?.owner).toBe(bobSocket)
+    expect(pending.take(otherShare)).toBe(otherShare)
+  })
+
+  it('keeps pending work when a response mismatches share or Relay id', () => {
+    const pending = new PendingRpc<object>()
+    const request = pending.add('share-a', 1, {})
+    expect(pending.take({ ...request, shareId: 'share-b' })).toBeUndefined()
+    expect(pending.take({ ...request, id: 2 })).toBeUndefined()
+    expect(pending.take(request)).toBe(request)
+    expect(pending.take(request)).toBeUndefined()
+  })
+
+  it('cancels only the request on the specified socket', () => {
+    const pending = new PendingRpc<object>()
+    const socketA = {}
+    const socketB = {}
+    const a = pending.add('share', 1, socketA)
+    const b = pending.add('share', 1, socketB)
+    expect(pending.cancel(socketA, 2)).toBeUndefined()
+    expect(pending.cancel(socketA, 1)).toBe(a)
+    expect(pending.cancel(socketA, 1)).toBeUndefined()
+    expect(pending.clear(socketA)).toEqual([])
+    expect(pending.take(a)).toBeUndefined()
+    expect(pending.take(b)).toBe(b)
+  })
+
+  it('removes all socket requests and refuses silent duplicate ids', () => {
+    const pending = new PendingRpc<object>()
+    const socket = {}
+    const a = pending.add('share', 1, socket)
+    const b = pending.add('share', 2, socket)
+    expect(() => pending.add('share', 1, socket)).toThrow('already pending')
+    expect(pending.clear(socket)).toEqual([a, b])
+    expect(pending.take(a)).toBeUndefined()
+    expect(pending.take(b)).toBeUndefined()
+    expect(pending.add('share', 1, socket).token).not.toBe(a.token)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/gateway-registration-url.spec.ts b/packages/experimental/liveshare/tests/gateway-registration-url.spec.ts
new file mode 100644
index 0000000000..e9e9eb2ff8
--- /dev/null
+++ b/packages/experimental/liveshare/tests/gateway-registration-url.spec.ts
@@ -0,0 +1,96 @@
+import { describe, expect, it } from 'vitest'
+import { LIVESHARE_CAPABILITIES, LIVESHARE_PROTOCOL_VERSION } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { registrationUrl } from '../src/owner-gateway/registration-url.ts'
+import type { TunnelShareSpec } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+
+/** The share every case starts from: the required fields, and nothing optional. */
+const minimal: TunnelShareSpec = {
+  shareId: 'share-one',
+  sessionId: 'session-one',
+  sessionTitle: 'Review the migration',
+  accessMode: 'open',
+  relay: 'https://relay.example',
+  gatewayToken: 'token-one',
+  ownerDisplayName: 'Owner',
+  allowedSubjectIds: [],
+}
+
+describe('Liveshare registration handshake', () => {
+  it('states the protocol version and capabilities this build reads frames with', () => {
+    const url = registrationUrl(minimal)
+
+    expect(url.origin).toBe('wss://relay.example')
+    expect(url.protocol).toBe('wss:')
+    expect(url.pathname).toBe('/__tunnel_gateway__')
+    expect(url.searchParams.get('protocolVersion')).toBe(String(LIVESHARE_PROTOCOL_VERSION))
+    expect(url.searchParams.get('capabilities')).toBe(LIVESHARE_CAPABILITIES.join(','))
+  })
+
+  it('carries the base path of a Relay published under one', () => {
+    const url = registrationUrl({ ...minimal, relay: 'https://relay.example/liveshare/' })
+
+    expect(url.pathname).toBe('/liveshare/__tunnel_gateway__')
+  })
+
+  it('registers over the plain-socket scheme when the Relay itself is served over http', () => {
+    // A Relay deployed without TLS is reached over `ws:`; the handshake scheme follows the address
+    // the owner configured rather than being pinned to `wss:`.
+    const url = registrationUrl({ ...minimal, relay: 'http://relay.example' })
+
+    expect(url.protocol).toBe('ws:')
+    expect(url.origin).toBe('ws://relay.example')
+  })
+
+  it('sends the required share facts unchanged', () => {
+    const url = registrationUrl({ ...minimal, accessMode: 'selected' })
+
+    expect(url.searchParams.get('shareId')).toBe('share-one')
+    expect(url.searchParams.get('sessionId')).toBe('session-one')
+    expect(url.searchParams.get('sessionTitle')).toBe('Review the migration')
+    expect(url.searchParams.get('accessMode')).toBe('selected')
+    expect(url.searchParams.get('ownerDisplayName')).toBe('Owner')
+  })
+
+  it('leaves every optional fact absent until the share states it', () => {
+    const url = registrationUrl(minimal)
+
+    for (const absent of ['sessionMode', 'allowsFork', 'dshVersion', 'ownerInstanceId', 'expiresAt', 'ownerProviderId', 'ownerTenantId', 'allowedSubjectId']) {
+      expect(url.searchParams.get(absent), absent).toBeNull()
+    }
+  })
+
+  it('carries exactly the optionals the share states', () => {
+    const url = registrationUrl({
+      ...minimal,
+      sessionMode: 'write',
+      allowsFork: true,
+      dshVersion: '0.2.0-rc.2',
+      ownerInstanceId: 'instance-one',
+      expiresAt: '2026-10-03T00:00:00.000Z',
+      ownerProviderId: 'feishu',
+      ownerTenantId: 'tenant-a',
+      allowedSubjectIds: ['ou_viewer', 'feishu:tenant-a:ou_other'],
+    })
+
+    expect(url.searchParams.get('sessionMode')).toBe('write')
+    expect(url.searchParams.get('allowsFork')).toBe('1')
+    expect(url.searchParams.get('dshVersion')).toBe('0.2.0-rc.2')
+    expect(url.searchParams.get('ownerInstanceId')).toBe('instance-one')
+    expect(url.searchParams.get('expiresAt')).toBe('2026-10-03T00:00:00.000Z')
+    expect(url.searchParams.get('ownerProviderId')).toBe('feishu')
+    expect(url.searchParams.get('ownerTenantId')).toBe('tenant-a')
+    expect(url.searchParams.getAll('allowedSubjectId')).toEqual(['ou_viewer', 'feishu:tenant-a:ou_other'])
+  })
+
+  it('never sends the retired approval-card recipient parameters', () => {
+    const url = registrationUrl({ ...minimal, ownerProviderId: 'feishu', ownerTenantId: 'tenant-a' })
+
+    for (const gone of ['ownerFeishuId', 'ownerFeishuIdType']) {
+      expect(url.searchParams.get(gone), gone).toBeNull()
+    }
+  })
+
+  it('never sends a fork switch that is off, so an older Relay reads it as no forking', () => {
+    expect(registrationUrl({ ...minimal, allowsFork: false }).searchParams.get('allowsFork')).toBeNull()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/gateway-worker-fake-ws.ts b/packages/experimental/liveshare/tests/gateway-worker-fake-ws.ts
new file mode 100644
index 0000000000..ec058f1130
--- /dev/null
+++ b/packages/experimental/liveshare/tests/gateway-worker-fake-ws.ts
@@ -0,0 +1,139 @@
+/** Controllable `ws` replacement for the in-process gateway worker lifecycle spec. */
+
+import { EventEmitter } from 'node:events'
+
+/**
+ * One gateway socket whose lifecycle the spec drives synchronously.
+ *
+ * The worker owns the real handshake and heartbeat schedule; a socket double keeps their timing
+ * deterministic while still delivering the same `open`/`message`/`close`/`error` events.
+ */
+export class FakeWebSocket extends EventEmitter {
+  /** `WebSocket.OPEN`, read by the worker and `sendFrame`. */
+  static readonly OPEN = 1
+
+  /** `WebSocket.CLOSING`, accepted by callers that inspect the socket state. */
+  static readonly CLOSING = 2
+
+  /** `WebSocket.CLOSED`. */
+  static readonly CLOSED = 3
+
+  /** Every socket the worker constructed, in creation order. */
+  static readonly instances: FakeWebSocket[] = []
+
+  /**
+   * Deliver a terminated socket's close on the next microtask.
+   *
+   * Real transports report `close` after the error that terminated them, so a spec that emits that
+   * error from inside the handshake failure needs one turn before the close handler runs.
+   */
+  static deferClose = false
+
+  /** State the worker reads before sending or pinging. */
+  readyState = 0
+
+  /** Raw frames the worker wrote to this socket. */
+  readonly sent: string[] = []
+
+  /** Pings the worker issued on this socket. */
+  pingCount = 0
+
+  /** Whether the worker terminated this socket rather than closing it cleanly. */
+  terminated = false
+
+  /**
+   * Record one construction by the worker.
+   * @param url Registration URL the worker built.
+   * @param options Socket options carrying the handshake headers.
+   */
+  constructor(readonly url: URL, readonly options: { readonly headers?: Readonly<Record<string, string>> }) {
+    super()
+    FakeWebSocket.instances.push(this)
+  }
+
+  /** Complete the handshake. */
+  open(): void {
+    this.readyState = FakeWebSocket.OPEN
+    this.emit('open')
+  }
+
+  /** Count one heartbeat ping. */
+  ping(): void {
+    this.pingCount += 1
+  }
+
+  /**
+   * Record one outgoing frame.
+   * @param data Serialized frame.
+   */
+  send(data: string): void {
+    this.sent.push(data)
+  }
+
+  /**
+   * Close the socket and report it once.
+   * @param code Close code.
+   * @param reason Close reason.
+   */
+  close(code = 1000, reason = ''): void {
+    if (this.readyState === FakeWebSocket.CLOSED) return
+    this.readyState = FakeWebSocket.CLOSED
+    this.emit('close', code, Buffer.from(reason))
+  }
+
+  /**
+   * Report a close without the socket going through its own transition again.
+   *
+   * A transport may surface a late close for a connection the worker already replaced; the
+   * replacement guard must observe that event, not just the first close of each socket.
+   * @param code Close code.
+   * @param reason Close reason.
+   */
+  reportClose(code = 1006, reason = ''): void {
+    this.readyState = FakeWebSocket.CLOSED
+    this.emit('close', code, Buffer.from(reason))
+  }
+
+  /** Abort the socket the way a failed transport does. */
+  terminate(): void {
+    this.terminated = true
+    if (FakeWebSocket.deferClose) {
+      this.readyState = FakeWebSocket.CLOSING
+      void Promise.resolve().then(() => { this.close(1006) })
+      return
+    }
+    this.close(1006)
+  }
+
+  /**
+   * Deliver one decoded frame.
+   * @param value Frame object serialized as the Relay would send it.
+   */
+  frame(value: unknown): void {
+    this.emit('message', Buffer.from(JSON.stringify(value)))
+  }
+
+  /**
+   * Deliver one raw socket message.
+   * @param text Message text.
+   */
+  raw(text: string): void {
+    this.emit('message', Buffer.from(text))
+  }
+
+  /**
+   * Report a transport failure.
+   * @param error Failure value.
+   */
+  fail(error: Error | string): void {
+    this.emit('error', error)
+  }
+
+  /**
+   * Report a refused handshake.
+   * @param statusCode HTTP status the Relay answered with.
+   */
+  refuseHandshake(statusCode: number): void {
+    this.emit('unexpected-response', {}, { statusCode })
+  }
+}
diff --git a/packages/experimental/liveshare/tests/gateway-worker.spec.ts b/packages/experimental/liveshare/tests/gateway-worker.spec.ts
new file mode 100644
index 0000000000..472e331cf0
--- /dev/null
+++ b/packages/experimental/liveshare/tests/gateway-worker.spec.ts
@@ -0,0 +1,524 @@
+/**
+ * In-process gateway worker lifecycle: owner IPC in, Relay socket out.
+ *
+ * The worker normally runs as a spawned child, so its process-bound handlers and socket
+ * state machine are exercised here by calling the real `runGatewayWorker()` with a controllable
+ * `ws` double and captured `process` IPC. The relay-side wire shape is the protocol package's.
+ */
+
+import { randomUUID } from 'node:crypto'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import type {
+  TunnelRegistrationToken,
+  TunnelShareSpec,
+  TunnelWorkerCommand,
+  TunnelWorkerEvent,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { runGatewayWorker } from '../src/owner-gateway/worker.ts'
+import { FakeWebSocket } from './gateway-worker-fake-ws.ts'
+
+vi.mock('ws', async () => {
+  const { FakeWebSocket: Fake } = await import('./gateway-worker-fake-ws.ts')
+  return { WebSocket: Fake }
+})
+
+/** Thrown by the captured exit so the spec can observe a worker that terminates. */
+class ExitSignal extends Error {}
+
+interface WorkerHarness {
+  readonly events: TunnelWorkerEvent[]
+  readonly exits: number[]
+  command(value: TunnelWorkerCommand | Record<string, unknown>): void
+  disconnect(): void
+  stop(): void
+}
+
+const sockets = (): readonly FakeWebSocket[] => FakeWebSocket.instances
+const latest = (): FakeWebSocket => {
+  const socket = FakeWebSocket.instances.at(-1)
+  if (socket === undefined) throw new Error('worker did not open a gateway socket')
+  return socket
+}
+
+function shareSpec(overrides: Partial<TunnelShareSpec> = {}): TunnelShareSpec {
+  return {
+    shareId: 'share',
+    sessionId: 'session',
+    sessionTitle: 'Session',
+    accessMode: 'open',
+    relay: 'http://relay.invalid',
+    gatewayToken: 'gateway-token',
+    ownerDisplayName: 'Owner',
+    allowedSubjectIds: [],
+    ...overrides,
+  }
+}
+
+function startWorker(): WorkerHarness {
+  const events: TunnelWorkerEvent[] = []
+  const exits: number[] = []
+  const messageBefore = new Set(process.listeners('message'))
+  const disconnectBefore = new Set(process.listeners('disconnect'))
+  const sendDescriptor = Object.getOwnPropertyDescriptor(process, 'send')
+  Object.defineProperty(process, 'send', {
+    configurable: true,
+    writable: true,
+    value: (event: TunnelWorkerEvent): boolean => { events.push(event); return true },
+  })
+  const exit = (code?: string | number | null): never => {
+    exits.push(Number(code ?? 0))
+    throw new ExitSignal('worker exited')
+  }
+  const exitSpy = vi.spyOn(process, 'exit').mockImplementation(exit)
+  runGatewayWorker()
+  const message = process.listeners('message').find(listener => !messageBefore.has(listener)) as ((value: unknown) => void) | undefined
+  const disconnect = process.listeners('disconnect').find(listener => !disconnectBefore.has(listener))
+  if (message === undefined || disconnect === undefined) throw new Error('worker did not install its IPC handlers')
+  const run = (value: unknown): void => {
+    try {
+      message(value)
+    } catch (error) {
+      if (!(error instanceof ExitSignal)) throw error
+    }
+  }
+  return {
+    events,
+    exits,
+    command: run,
+    disconnect: () => {
+      try {
+        disconnect()
+      } catch (error) {
+        if (!(error instanceof ExitSignal)) throw error
+      }
+    },
+    stop: () => {
+      process.removeListener('message', message)
+      process.removeListener('disconnect', disconnect)
+      exitSpy.mockRestore()
+      if (sendDescriptor === undefined) delete process.send
+      else Object.defineProperty(process, 'send', sendDescriptor)
+    },
+  }
+}
+
+function frames(socket: FakeWebSocket): Record<string, unknown>[] {
+  return socket.sent.map(text => JSON.parse(text) as Record<string, unknown>)
+}
+
+function eventsOf<T extends TunnelWorkerEvent['type']>(
+  harness: WorkerHarness,
+  type: T,
+): Extract<TunnelWorkerEvent, { type: T }>[] {
+  return harness.events.filter(event => event.type === type) as Extract<TunnelWorkerEvent, { type: T }>[]
+}
+
+const registrationToken = (): TunnelRegistrationToken => randomUUID() as TunnelRegistrationToken
+
+let worker: WorkerHarness | undefined
+
+beforeEach(() => {
+  vi.useFakeTimers()
+  FakeWebSocket.instances.length = 0
+  FakeWebSocket.deferClose = false
+  vi.spyOn(console, 'log').mockImplementation(() => {})
+  vi.spyOn(console, 'warn').mockImplementation(() => {})
+})
+
+afterEach(() => {
+  worker?.stop()
+  worker = undefined
+  vi.useRealTimers()
+  vi.restoreAllMocks()
+  FakeWebSocket.instances.length = 0
+  FakeWebSocket.deferClose = false
+})
+
+describe('Liveshare gateway worker IPC', () => {
+  it('reports ready, registers a share with its handshake headers, and announces the connection', () => {
+    worker = startWorker()
+    expect(worker.events).toEqual([{ type: 'ready' }])
+
+    const token = registrationToken()
+    worker.command({ type: 'add-share', registrationToken: token, share: shareSpec({ ownerCredential: 'owner-credential' }) })
+
+    const socket = latest()
+    expect(socket.url.searchParams.get('shareId')).toBe('share')
+    expect(socket.url.searchParams.get('sessionId')).toBe('session')
+    expect(socket.url.searchParams.get('sessionTitle')).toBe('Session')
+    expect(socket.options.headers).toEqual({
+      authorization: 'Bearer gateway-token',
+      'x-liveshare-owner-credential': 'owner-credential',
+    })
+    expect(worker.events.filter(event => event.type === 'share-connected')).toEqual([])
+
+    socket.open()
+    expect(worker.events.at(-1)).toEqual({ type: 'share-connected', registrationToken: token, shareId: 'share' })
+  })
+
+  it('omits an absent owner credential and treats an identical registration as a no-op', () => {
+    worker = startWorker()
+    const token = registrationToken()
+    worker.command({ type: 'add-share', registrationToken: token, share: shareSpec() })
+    expect(latest().options.headers).toEqual({ authorization: 'Bearer gateway-token' })
+
+    worker.command({ type: 'add-share', registrationToken: token, share: shareSpec() })
+    expect(sockets()).toHaveLength(1)
+  })
+
+  it('replaces a share published under a different registration and ignores unknown removals', () => {
+    worker = startWorker()
+    const first = registrationToken()
+    worker.command({ type: 'add-share', registrationToken: first, share: shareSpec() })
+    const firstSocket = latest()
+    firstSocket.open()
+
+    const second = registrationToken()
+    worker.command({ type: 'add-share', registrationToken: second, share: shareSpec({ sessionTitle: 'Renamed' }) })
+    expect(firstSocket.readyState).toBe(FakeWebSocket.CLOSED)
+    expect(sockets()).toHaveLength(2)
+    // The retired socket's close is not a live connection loss, so no share-closed is reported for it.
+    expect(eventsOf(worker, 'share-closed')).toEqual([])
+    // A late open from the retired socket does not announce the replacement either.
+    firstSocket.open()
+    expect(eventsOf(worker, 'share-connected')).toHaveLength(1)
+
+    worker.command({ type: 'remove-share', shareId: 'absent' })
+    worker.command({ type: 'remove-share', shareId: 'share' })
+    expect(latest().readyState).toBe(FakeWebSocket.CLOSED)
+    expect(eventsOf(worker, 'share-closed')).toEqual([])
+  })
+
+  it('refuses one malformed owner command without disturbing the running shares', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-shre' })
+    expect(console.warn).toHaveBeenCalledWith('[liveshare] worker refused one owner command')
+    expect(sockets()).toEqual([])
+  })
+
+  it('reports shutdown and host disconnect by closing every share and exiting', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec({ shareId: 'other' }) })
+    expect(sockets()).toHaveLength(2)
+
+    worker.command({ type: 'shutdown' })
+    expect(sockets().map(socket => socket.readyState)).toEqual([FakeWebSocket.CLOSED, FakeWebSocket.CLOSED])
+    expect(worker.exits).toEqual([0])
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('worker shutting down command=shutdown shares=2'))
+
+    worker.command({ type: 'remove-share', shareId: 'share' })
+    expect(sockets()).toHaveLength(2)
+  })
+
+  it('closes every share when the host connection disappears', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    worker.disconnect()
+    expect(latest().readyState).toBe(FakeWebSocket.CLOSED)
+    expect(worker.exits).toEqual([0])
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('worker lost its host connection shares=1'))
+  })
+
+  it('runs without an IPC channel to report events to', () => {
+    worker = startWorker()
+    delete process.send
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    expect(() => { latest().open() }).not.toThrow()
+    expect(worker.events).toEqual([{ type: 'ready' }])
+  })
+})
+
+describe('Liveshare gateway worker request correlation', () => {
+  it('routes a relay request to the owner and returns the answered body', () => {
+    worker = startWorker()
+    const token = registrationToken()
+    worker.command({ type: 'add-share', registrationToken: token, share: shareSpec() })
+    const socket = latest()
+    socket.open()
+
+    socket.frame({ type: 'share-rpc', id: 5, body: { op: 'read', id: 9 }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' } })
+    const received = eventsOf(worker, 'share-rpc-request')
+    expect(received).toHaveLength(1)
+    expect(received[0]).toMatchObject({ registrationToken: token, id: 5, shareId: 'share', body: { op: 'read', id: 9 } })
+    expect(received[0]?.actor).toEqual({ providerId: 'p', tenantId: 't', subjectId: 'alice' })
+
+    worker.command({
+      type: 'share-rpc-response', registrationToken: token, token: received[0]!.token, id: 5, shareId: 'share',
+      status: 200, body: { value: 'ok' },
+    })
+    expect(frames(socket).at(-1)).toEqual({ type: 'share-rpc-res', id: 5, status: 200, body: { value: 'ok' } })
+
+    socket.frame({ type: 'share-rpc', id: 6, body: { op: 'read' }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' } })
+    const second = eventsOf(worker, 'share-rpc-request').at(-1)!
+    worker.command({ type: 'share-rpc-response', registrationToken: token, token: second.token, id: 6, shareId: 'share', status: 204 })
+    expect(frames(socket).at(-1)).toEqual({ type: 'share-rpc-res', id: 6, status: 204 })
+    expect(frames(socket).at(-1)).not.toHaveProperty('body')
+  })
+
+  it('cancels a replaced request, a relay cancel, and every request on a closed socket', () => {
+    worker = startWorker()
+    const token = registrationToken()
+    worker.command({ type: 'add-share', registrationToken: token, share: shareSpec() })
+    const socket = latest()
+    socket.open()
+
+    socket.frame({ type: 'share-rpc', id: 5, body: { op: 'read' }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' } })
+    const first = eventsOf(worker, 'share-rpc-request')[0]!
+    socket.frame({ type: 'share-rpc', id: 5, body: { op: 'read' }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' } })
+    expect(eventsOf(worker, 'share-rpc-request')).toHaveLength(2)
+    expect(eventsOf(worker, 'share-rpc-cancel')[0]).toMatchObject({ token: first.token, id: 5, shareId: 'share' })
+
+    socket.frame({ type: 'share-rpc-cancel', id: 99 })
+    expect(eventsOf(worker, 'share-rpc-cancel')).toHaveLength(1)
+    socket.frame({ type: 'share-rpc-cancel', id: 5 })
+    expect(eventsOf(worker, 'share-rpc-cancel')).toHaveLength(2)
+
+    socket.frame({ type: 'share-rpc', id: 7, body: { op: 'read' }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' } })
+    socket.close(1000, 'done')
+    expect(eventsOf(worker, 'share-rpc-cancel').at(-1)).toMatchObject({ id: 7, shareId: 'share' })
+    expect(eventsOf(worker, 'share-closed')).toHaveLength(1)
+  })
+
+  it('drops answers with no live request, a wrong registration, or no gateway', () => {
+    worker = startWorker()
+    const token = registrationToken()
+    worker.command({ type: 'add-share', registrationToken: token, share: shareSpec() })
+    const socket = latest()
+    socket.open()
+
+    worker.command({ type: 'share-rpc-response', registrationToken: token, token: 'unknown', id: 1, shareId: 'share', status: 200 })
+    expect(console.warn).toHaveBeenCalledWith('[liveshare] worker dropped late read response relayId=1')
+    worker.command({ type: 'share-rpc-response', registrationToken: token, token: 'unknown', id: 1, shareId: 'absent', status: 200 })
+
+    socket.frame({ type: 'share-rpc', id: 8, body: { op: 'read' }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' } })
+    const request = eventsOf(worker, 'share-rpc-request').at(-1)!
+    worker.command({ type: 'share-rpc-response', registrationToken: registrationToken(), token: request.token, id: 8, shareId: 'share', status: 200 })
+    expect(socket.sent).toEqual([])
+
+    // A socket still in its closing handshake is not OPEN, so the owner's answer has nowhere to go.
+    socket.readyState = FakeWebSocket.CLOSING
+    worker.command({ type: 'share-rpc-response', registrationToken: token, token: request.token, id: 8, shareId: 'share', status: 200 })
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('worker cannot deliver read response'))
+    expect(socket.sent).toEqual([])
+  })
+})
+
+describe('Liveshare gateway worker committed access state', () => {
+  it('keeps the newest committed state and re-registers from it after reconnect', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec({ expiresAt: '2030-01-01T00:00:00Z' }) })
+    const socket = latest()
+    socket.open()
+
+    const newest = {
+      type: 'share-access-state', version: 2, accessMode: 'selected', allowedSubjectIds: ['bob'],
+      sessionMode: 'view', allowsFork: true, expiresAt: '2030-02-01T00:00:00Z',
+    }
+    socket.frame(newest)
+    expect(eventsOf(worker, 'share-access-state')[0]).toMatchObject({ ...newest, shareId: 'share' })
+
+    socket.frame({ ...newest, version: 1, sessionMode: 'write' })
+    socket.frame({ ...newest, version: 2, sessionMode: 'write' })
+    expect(eventsOf(worker, 'share-access-state')).toHaveLength(1)
+
+    socket.frame({
+      type: 'share-access-state', version: 3, accessMode: 'open', allowedSubjectIds: ['carol'], sessionMode: 'write',
+    })
+    expect(eventsOf(worker, 'share-access-state')).toHaveLength(2)
+
+    socket.close(1000, 'reconnect')
+    vi.advanceTimersByTime(500)
+    const reconnected = latest()
+    expect(reconnected).not.toBe(socket)
+    expect(reconnected.url.searchParams.get('accessMode')).toBe('open')
+    expect(reconnected.url.searchParams.get('sessionMode')).toBe('write')
+    expect(reconnected.url.searchParams.getAll('allowedSubjectId')).toEqual(['carol'])
+    expect(reconnected.url.searchParams.has('allowsFork')).toBe(false)
+    expect(reconnected.url.searchParams.has('expiresAt')).toBe(false)
+  })
+})
+
+describe('Liveshare gateway worker Relay refusal and transport failures', () => {
+  it('stops a share the Relay refused to register instead of reconnecting', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    const socket = latest()
+    socket.open()
+    socket.refuseHandshake(401)
+
+    expect(socket.terminated).toBe(true)
+    expect(console.warn).toHaveBeenCalledWith('[liveshare] worker stopped share=share relay refused registration status=401')
+    expect(eventsOf(worker, 'share-closed')).toEqual([])
+    vi.advanceTimersByTime(60_000)
+    expect(sockets()).toHaveLength(1)
+  })
+
+  it('retries a transient handshake failure and reports the socket error that carries the status', async () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    const socket = latest()
+    socket.open()
+    FakeWebSocket.deferClose = true
+    socket.refuseHandshake(500)
+    socket.fail(new Error('socket hang up'))
+    expect(eventsOf(worker, 'share-error')[0]).toMatchObject({ shareId: 'share', message: 'relay answered registration status=500' })
+
+    await Promise.resolve()
+    expect(eventsOf(worker, 'share-closed')).toHaveLength(1)
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('gateway-error relay answered registration status=500'))
+    vi.advanceTimersByTime(500)
+    expect(sockets()).toHaveLength(2)
+  })
+
+  it('reports a socket failure without a handshake status and reconnects with backoff', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    const socket = latest()
+    socket.open()
+    socket.fail(new Error('boom'))
+
+    expect(eventsOf(worker, 'share-error')[0]).toMatchObject({ message: 'boom' })
+    expect(eventsOf(worker, 'share-closed')).toHaveLength(1)
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('retryMs=500'))
+    vi.advanceTimersByTime(499)
+    expect(sockets()).toHaveLength(1)
+    vi.advanceTimersByTime(1)
+    expect(sockets()).toHaveLength(2)
+  })
+
+  it('reports a non-Error failure value and ignores failures from a retired connection', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    const first = latest()
+    first.open()
+    const secondToken = registrationToken()
+    worker.command({ type: 'add-share', registrationToken: secondToken, share: shareSpec() })
+    first.fail('plain failure')
+    expect(eventsOf(worker, 'share-error')).toEqual([])
+
+    const second = latest()
+    second.open()
+    second.fail('plain failure')
+    expect(eventsOf(worker, 'share-error')[0]).toMatchObject({ registrationToken: secondToken, message: 'plain failure' })
+  })
+
+  it('starts the retry schedule over after a connection stayed up long enough', () => {
+    worker = startWorker()
+    const token = registrationToken()
+    worker.command({ type: 'add-share', registrationToken: token, share: shareSpec() })
+    const first = latest()
+    first.open()
+    vi.advanceTimersByTime(30_000)
+    first.close(1006, 'stable connection lost')
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('retryMs=500'))
+
+    vi.advanceTimersByTime(500)
+    const second = latest()
+    second.open()
+    // A close reported late for the retired socket is not a loss of the connection that replaced it.
+    first.reportClose()
+    expect(eventsOf(worker, 'share-closed')).toHaveLength(1)
+    vi.advanceTimersByTime(1_000)
+    second.close(1006, 'short connection lost')
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('retryMs=1000'))
+
+    vi.advanceTimersByTime(999)
+    expect(sockets()).toHaveLength(2)
+    vi.advanceTimersByTime(1)
+    const third = latest()
+    third.open()
+    vi.advanceTimersByTime(30_000)
+    third.close(1006, 'stable again')
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('retryMs=500'))
+  })
+})
+
+describe('Liveshare gateway worker heartbeats and frames it cannot serve', () => {
+  it('warns once, then drops a socket whose pong never arrives', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    const socket = latest()
+    socket.open()
+
+    vi.advanceTimersByTime(25_000)
+    expect(socket.pingCount).toBe(1)
+    vi.advanceTimersByTime(25_000)
+    expect(console.warn).toHaveBeenCalledWith('[liveshare] worker heartbeat missed share=share missedPongs=1')
+    expect(socket.pingCount).toBe(1)
+
+    vi.advanceTimersByTime(25_000)
+    expect(socket.terminated).toBe(true)
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('reason=heartbeat-timeout missedPongs=2'))
+    expect(eventsOf(worker, 'share-closed')).toHaveLength(1)
+  })
+
+  it('clears a missed heartbeat on pong and on any other traffic', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    const socket = latest()
+    socket.open()
+
+    vi.advanceTimersByTime(25_000)
+    socket.emit('pong')
+    vi.advanceTimersByTime(25_000)
+    expect(socket.pingCount).toBe(2)
+
+    socket.frame({ type: 'share-access-state', version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view' })
+    vi.advanceTimersByTime(25_000)
+    expect(socket.pingCount).toBe(3)
+    expect(eventsOf(worker, 'share-closed')).toEqual([])
+  })
+
+  it('does not ping a socket that is not open', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    const socket = latest()
+    socket.open()
+    socket.readyState = 0
+    vi.advanceTimersByTime(25_000)
+    expect(socket.pingCount).toBe(0)
+  })
+
+  it('answers frames this build cannot serve and drops unanswerable ones', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    const socket = latest()
+    socket.open()
+
+    socket.raw('{not json')
+    socket.frame({ type: 'future-frame', id: 7 })
+    socket.frame({ type: 'share-rpc', id: 8, body: {} })
+    socket.frame({ type: 'share-rpc-res', id: 9, status: 200 })
+    expect(frames(socket)).toEqual([
+      { type: 'share-rpc-res', id: 7, status: 501, body: { error: 'unsupported-frame' } },
+      { type: 'share-rpc-res', id: 8, status: 400, body: { error: 'invalid-request' } },
+    ])
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('frame=unanswerable'))
+  })
+
+  it('ignores frames from a socket the worker already replaced', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    const first = latest()
+    first.open()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    first.frame({ type: 'share-access-state', version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view' })
+    first.raw(JSON.stringify({ type: 'future-frame', id: 10 }))
+    expect(eventsOf(worker, 'share-access-state')).toEqual([])
+    expect(frames(first)).toEqual([])
+  })
+
+  it('drops the retry timer when the owner removes a share between attempts', () => {
+    worker = startWorker()
+    worker.command({ type: 'add-share', registrationToken: registrationToken(), share: shareSpec() })
+    const socket = latest()
+    socket.open()
+    socket.close(1006, 'lost')
+    expect(eventsOf(worker, 'share-closed')).toHaveLength(1)
+
+    worker.command({ type: 'remove-share', shareId: 'share' })
+    vi.advanceTimersByTime(60_000)
+    expect(sockets()).toHaveLength(1)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/generated-remote-stub.ts b/packages/experimental/liveshare/tests/generated-remote-stub.ts
new file mode 100644
index 0000000000..63b6de8a5d
--- /dev/null
+++ b/packages/experimental/liveshare/tests/generated-remote-stub.ts
@@ -0,0 +1,2 @@
+/** Resolvable stand-in for the generated `./remote` contribution when this package has no built `lib/`. */
+export default { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} }
diff --git a/packages/experimental/liveshare/tests/host-activate-session.spec.ts b/packages/experimental/liveshare/tests/host-activate-session.spec.ts
new file mode 100644
index 0000000000..232a58080b
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-activate-session.spec.ts
@@ -0,0 +1,73 @@
+/**
+ * Bringing a Session up through the composition's own activation path.
+ *
+ * This host activates a Session — a write share's source, or a child recorded in an earlier process —
+ * before it drives that Session, so every plugin that installs itself from the `agent/created`
+ * announcement has run first. The capability it reads is the merge-declared `agent` lookup, whose
+ * resolver the composition owns, so this host needs no Session-controller endpoint of its own; a
+ * deployment that installs no such lookup, or whose lookup activates nothing, is refused loudly rather
+ * than left looking activated.
+ */
+
+import { Context } from '@deepseek-ai/cordis'
+import { describe, expect, it } from 'vitest'
+import { activateSession } from '../src/host/share-host.ts'
+
+const session = 'session-child'
+
+/** A host context that provides the `agent` lookup, recording every identity asked of it. */
+function host(resolve?: (sessionId: string) => unknown): { ctx: Context; asked: string[] } {
+  const ctx = new Context()
+  const asked: string[] = []
+  ctx.provide('typert', {
+    lookups: {
+      get: (key: string) => key === 'agent' && resolve !== undefined
+        ? {
+          resolve: (sessionId: string) => {
+            asked.push(sessionId)
+            return resolve(sessionId)
+          },
+        }
+        : undefined,
+    },
+  })
+  return { ctx, asked }
+}
+
+describe('session activation through the agent lookup', () => {
+  it('resolves the Session through the lookup and waits for the answer', async () => {
+    let settled = false
+    const { ctx, asked } = host(async () => {
+      await Promise.resolve()
+      settled = true
+      return { id: session }
+    })
+
+    await activateSession(ctx, session)
+
+    expect(asked).toEqual([session])
+    expect(settled).toBe(true)
+    await ctx.fiber.dispose()
+  })
+
+  it('refuses a deployment that installs no agent lookup', async () => {
+    const { ctx } = host()
+
+    await expect(activateSession(ctx, session)).rejects.toThrow(/no agent lookup is registered/u)
+    await ctx.fiber.dispose()
+  })
+
+  it('refuses an answer that activates no Agent', async () => {
+    const { ctx } = host(() => undefined)
+
+    await expect(activateSession(ctx, session)).rejects.toThrow(/answered with nothing/u)
+    await ctx.fiber.dispose()
+  })
+
+  it('reports the resolver’s own failure instead of an acknowledgement', async () => {
+    const { ctx } = host(() => Promise.reject(new Error('session not found')))
+
+    await expect(activateSession(ctx, session)).rejects.toThrow(/session not found/u)
+    await ctx.fiber.dispose()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-activation.host.spec.ts b/packages/experimental/liveshare/tests/host-activation.host.spec.ts
new file mode 100644
index 0000000000..186ecc4c2e
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-activation.host.spec.ts
@@ -0,0 +1,66 @@
+/**
+ * The host bundle activates the way a profile loads it: through Cordis's injection check, with the
+ * dependencies it declares provided by the application.
+ *
+ * A fake Context handed straight to `apply` cannot catch an access to a service the plugin never
+ * declared, which is how a released composition ended up with no owner surface at all.
+ */
+
+import { Context } from '@deepseek-ai/cordis'
+import { describe, expect, it } from 'vitest'
+import type { Config } from '../src/host/share-host.ts'
+import * as ShareHost from '../src/host/share-host.ts'
+
+/** A connection stub whose route registrations the test can read. */
+function connection(paths: string[]) {
+  return {
+    authenticatedUrl: () => 'http://127.0.0.1:3092/?token=test',
+    fetch: {
+      register: (route: { readonly path: string; readonly requestBody?: string }) => {
+        if (route.requestBody === undefined) throw new Error(`missing request body mode: ${route.path}`)
+        paths.push(route.path)
+        return Promise.resolve(async () => {})
+      },
+    },
+  }
+}
+
+/** A host loads without any Relay address: the owner saves one in the Share dialog. */
+const config: Config = {}
+
+describe('liveshare host activation', () => {
+  it('registers its owner routes when the declared dependencies are present', async () => {
+    const paths: string[] = []
+    const ctx = new Context()
+    // The application provides what the bundle declares.
+    ctx.provide('connection', connection(paths))
+    ctx.provide('webServer', { port: 3092 })
+
+    await ctx.plugin(ShareHost, config)
+
+    expect(ShareHost.inject).toEqual(['connection'])
+    // Share management is the Remote service; only the sign-in and credential routes stay same-origin.
+    expect(ctx.get('liveshareShares')).toBeDefined()
+    expect(paths).toEqual([
+      '/api/liveshare.ownerCredential',
+      '/api/liveshare.ownerLoginStart',
+      '/api/liveshare.ownerLoginRedeem',
+      '/api/liveshare.ownerLoginCancel',
+    ])
+    await ctx.fiber.dispose()
+  })
+
+  it('still activates where no agent registry exists, without limiting anyone by default', async () => {
+    const paths: string[] = []
+    const ctx = new Context()
+    ctx.provide('connection', connection(paths))
+    ctx.provide('webServer', { port: 3092 })
+
+    await ctx.plugin(ShareHost, config)
+
+    // The owner surface is served; the listener installs nothing for a deployment with no shares or forks,
+    // and the prompt gate refuses a resumed child it cannot limit rather than driving it unconstrained.
+    expect(ctx.get('liveshareShares')).toBeDefined()
+    await ctx.fiber.dispose()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-owner-authorization.spec.ts b/packages/experimental/liveshare/tests/host-owner-authorization.spec.ts
new file mode 100644
index 0000000000..bf3e9cfd47
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-owner-authorization.spec.ts
@@ -0,0 +1,133 @@
+/**
+ * The host's half of one owner authorization: every binding the browser could alter is checked again
+ * when the code comes back, and only a passing completion consumes the transaction.
+ */
+
+import { describe, expect, it, vi } from 'vitest'
+import { OwnerAuthorizations, ownerAuthorizeUrl } from '../src/host/owner-authorization.ts'
+
+const START = Date.parse('2026-10-23T00:00:00Z')
+
+/** One store over a clock this spec controls. */
+function store(ttlMs = 5 * 60 * 1000) {
+  let now = START
+  return {
+    authorizations: new OwnerAuthorizations({ ttlMs, now: () => now }),
+    advance: (ms: number) => { now += ms },
+  }
+}
+
+/** The bindings one environment states when a completion arrives. */
+const bound = { relay: 'https://relay.example', instanceKey: 'instance-one', origin: 'https://dsh.example.test' }
+
+describe('owner authorization transactions', () => {
+  it('hands one completion the verifier and its bindings, and consumes the transaction', () => {
+    const { authorizations } = store()
+    const transaction = authorizations.begin(bound)
+
+    expect(transaction.relay).toBe(bound.relay)
+    expect(transaction.instanceKey).toBe(bound.instanceKey)
+    // The verifier stays in this process; only its S256 challenge is published.
+    expect(transaction.verifier).not.toBe(transaction.challenge)
+    expect(transaction.challenge).toMatch(/^[A-Za-z0-9_-]+$/u)
+
+    expect(authorizations.complete({ state: transaction.state, ...bound })).toEqual({
+      ok: true,
+      completed: { relay: bound.relay, instanceKey: bound.instanceKey, verifier: transaction.verifier },
+    })
+    // A state is single-use: the same code cannot be redeemed twice.
+    expect(authorizations.complete({ state: transaction.state, ...bound }))
+      .toEqual({ ok: false, code: 'unknown-transaction' })
+  })
+
+  it('refuses a state this host never began', () => {
+    const { authorizations } = store()
+    expect(authorizations.complete({ state: 'never-issued', ...bound }))
+      .toEqual({ ok: false, code: 'unknown-transaction' })
+  })
+
+  it('refuses a transaction that outlived its deadline, and forgets it', () => {
+    const { authorizations, advance } = store(1_000)
+    const transaction = authorizations.begin(bound)
+    advance(1_001)
+
+    expect(authorizations.complete({ state: transaction.state, ...bound })).toEqual({ ok: false, code: 'expired' })
+    // The expired transaction is dropped, so a retry reads as one that never existed.
+    expect(authorizations.complete({ state: transaction.state, ...bound }))
+      .toEqual({ ok: false, code: 'unknown-transaction' })
+  })
+
+  it('refuses a completion from another origin, and keeps the attempt pending', () => {
+    const { authorizations } = store()
+    const transaction = authorizations.begin(bound)
+
+    expect(authorizations.complete({ state: transaction.state, ...bound, origin: 'https://elsewhere.test' }))
+      .toEqual({ ok: false, code: 'origin-mismatch' })
+    // The owner can retry the same attempt from the page that began it.
+    expect(authorizations.complete({ state: transaction.state, ...bound })).toMatchObject({ ok: true })
+  })
+
+  it('refuses a completion reported under another Relay address or host instance', () => {
+    const { authorizations } = store()
+    const transaction = authorizations.begin(bound)
+
+    expect(authorizations.complete({
+      state: transaction.state, ...bound, relay: 'https://other-relay.example',
+    })).toEqual({ ok: false, code: 'relay-changed' })
+    expect(authorizations.complete({ state: transaction.state, ...bound, instanceKey: 'instance-two' }))
+      .toEqual({ ok: false, code: 'instance-changed' })
+    expect(authorizations.complete({ state: transaction.state, ...bound })).toMatchObject({ ok: true })
+  })
+
+  it('states the Relay entry the browser opens, with the challenge and every binding it carries', () => {
+    expect(ownerAuthorizeUrl({
+      relay: 'https://relay.example',
+      state: 'state-one',
+      challenge: 'challenge-one',
+      instanceKey: 'instance-one',
+      origin: 'https://dsh.example.test',
+    })).toBe('https://relay.example/__liveshare/owner-authorize?state=state-one&code_challenge=challenge-one'
+      + '&instance=instance-one&origin=https%3A%2F%2Fdsh.example.test')
+  })
+
+  it('gives a transaction the production lifetime and clock when the host passes neither', () => {
+    vi.useFakeTimers()
+    vi.setSystemTime(START)
+    try {
+      const authorizations = new OwnerAuthorizations()
+      expect(authorizations.begin(bound).expiresAt).toBe(START + 5 * 60 * 1000)
+      // The clock is read again for the next attempt rather than captured at construction.
+      vi.setSystemTime(START + 1_000)
+      expect(authorizations.begin(bound).expiresAt).toBe(START + 1_000 + 5 * 60 * 1000)
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+
+  it('drops a transaction the browser abandoned, and reports whether it still waited for it', () => {
+    const { authorizations } = store()
+    const transaction = authorizations.begin(bound)
+
+    expect(authorizations.cancel(transaction.state)).toBe(true)
+    expect(authorizations.cancel(transaction.state)).toBe(false)
+    expect(authorizations.complete({ state: transaction.state, ...bound }))
+      .toEqual({ ok: false, code: 'unknown-transaction' })
+  })
+
+  it('sweeps an expired attempt when the next one begins, and keeps a live one', () => {
+    const { authorizations, advance } = store(1_000)
+    const stale = authorizations.begin(bound)
+    advance(600)
+    const live = authorizations.begin(bound)
+    advance(500)
+
+    // Beginning the next attempt is what drops the deadline nobody came back for; the second
+    // transaction is still within its own and must survive the sweep.
+    const fresh = authorizations.begin(bound)
+
+    expect(authorizations.complete({ state: stale.state, ...bound }))
+      .toEqual({ ok: false, code: 'unknown-transaction' })
+    expect(authorizations.complete({ state: live.state, ...bound })).toMatchObject({ ok: true })
+    expect(authorizations.complete({ state: fresh.state, ...bound })).toMatchObject({ ok: true })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-owner-credential-file.spec.ts b/packages/experimental/liveshare/tests/host-owner-credential-file.spec.ts
new file mode 100644
index 0000000000..d8f4575da6
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-owner-credential-file.spec.ts
@@ -0,0 +1,156 @@
+/** The stored owner credential: what a readable file states, and what an unreadable one leaves unstated. */
+
+import { mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished } from 'vitest'
+import {
+  clearOwnerCredential,
+  decodeOwnerCredential,
+  loadOwnerCredential,
+  ownerCredentialState,
+  reportedOwnerCredentialExpiry,
+  saveOwnerCredential,
+} from '../src/host/owner-credential-file.ts'
+
+/** One private directory whose files this spec owns. */
+function workspace(): string {
+  const dir = mkdtempSync(join(tmpdir(), 'liveshare-credential-'))
+  onTestFinished(() => { rmSync(dir, { recursive: true, force: true }) })
+  return join(dir, 'owner-credential.json')
+}
+
+/** One signed payload: base64url JSON, a dot, and a signature this host never reads. */
+function credential(payload: unknown, signature = 'signature'): string {
+  return `${Buffer.from(JSON.stringify(payload), 'utf8').toString('base64url')}.${signature}`
+}
+
+describe('stored owner credential file', () => {
+  it('saves the credential where it can be read back unchanged', () => {
+    const file = workspace()
+    const stored = {
+      relay: 'https://relay.example',
+      credential: credential({ expiresAt: 1_800_000_000_000, displayName: '许翰翔', subjectId: 'ou_owner' }),
+      expiresAt: '2027-01-15T08:00:00.000Z',
+      displayName: '许翰翔',
+      subjectId: 'ou_owner',
+      avatarUrl: 'https://cdn.example/owner.png',
+    }
+
+    saveOwnerCredential(file, stored)
+
+    expect(loadOwnerCredential(file)).toEqual(stored)
+    // The file is owner-only: another local user cannot read a verifiable credential.
+    expect(readFileSync(file, 'utf8')).toContain(stored.credential)
+  })
+
+  it('reads no credential from an absent file, a corrupt one, or one missing its binding', () => {
+    const file = workspace()
+    expect(loadOwnerCredential(file)).toBeUndefined()
+
+    writeFileSync(file, '{ not json')
+    expect(loadOwnerCredential(file)).toBeUndefined()
+
+    // A value that is not an object states no binding.
+    writeFileSync(file, '3')
+    expect(loadOwnerCredential(file)).toBeUndefined()
+    writeFileSync(file, 'null')
+    expect(loadOwnerCredential(file)).toBeUndefined()
+
+    // A credential without the Relay address it belongs to cannot be reused safely.
+    writeFileSync(file, JSON.stringify({ credential: 'token' }))
+    expect(loadOwnerCredential(file)).toBeUndefined()
+    writeFileSync(file, JSON.stringify({ relay: '', credential: 'token' }))
+    expect(loadOwnerCredential(file)).toBeUndefined()
+    writeFileSync(file, JSON.stringify({ relay: 'https://relay.example' }))
+    expect(loadOwnerCredential(file)).toBeUndefined()
+    writeFileSync(file, JSON.stringify({ relay: 'https://relay.example', credential: '' }))
+    expect(loadOwnerCredential(file)).toBeUndefined()
+  })
+
+  it('keeps only the optional facts the file states', () => {
+    const file = workspace()
+    writeFileSync(file, JSON.stringify({ relay: 'https://relay.example', credential: 'token', subjectId: 'ou_owner' }))
+    expect(loadOwnerCredential(file)).toEqual({
+      relay: 'https://relay.example', credential: 'token', subjectId: 'ou_owner',
+    })
+
+    // An empty avatar URL is no avatar: the page renders its own mark instead of an empty image.
+    writeFileSync(file, JSON.stringify({
+      relay: 'https://relay.example', credential: 'token', avatarUrl: '',
+    }))
+    expect(loadOwnerCredential(file)).toEqual({ relay: 'https://relay.example', credential: 'token' })
+  })
+
+  it('deletes the stored credential on sign-out', () => {
+    const file = workspace()
+    saveOwnerCredential(file, { relay: 'https://relay.example', credential: 'token' })
+
+    clearOwnerCredential(file)
+
+    expect(loadOwnerCredential(file)).toBeUndefined()
+    // Clearing an absent credential is the state a second sign-out reaches, not a failure.
+    expect(() => { clearOwnerCredential(file) }).not.toThrow()
+  })
+})
+
+describe('decoding a credential payload', () => {
+  it('reads the identity facts a signed payload carries', () => {
+    expect(decodeOwnerCredential(credential({
+      expiresAt: 1_767_225_600_000,
+      displayName: '许翰翔',
+      subjectId: 'ou_owner',
+      avatarUrl: 'https://cdn.example/owner.png',
+    }))).toEqual({
+      expiresAt: '2026-01-01T00:00:00.000Z',
+      displayName: '许翰翔',
+      subjectId: 'ou_owner',
+      avatarUrl: 'https://cdn.example/owner.png',
+    })
+  })
+
+  it('leaves out an expiry that is not a finite instant, and every empty fact', () => {
+    expect(decodeOwnerCredential(credential({
+      expiresAt: 'tomorrow', displayName: '', subjectId: '', avatarUrl: '',
+    }))).toEqual({})
+    expect(decodeOwnerCredential(credential({}))).toEqual({})
+  })
+
+  it('reads nothing from a token that carries no payload', () => {
+    expect(decodeOwnerCredential('token')).toBeUndefined()
+    expect(decodeOwnerCredential('.signature')).toBeUndefined()
+    expect(decodeOwnerCredential('not-base64!.signature')).toBeUndefined()
+    // A payload that decodes to a JSON value other than an object names no facts.
+    expect(decodeOwnerCredential(`${Buffer.from('3', 'utf8').toString('base64url')}.signature`)).toBeUndefined()
+    expect(decodeOwnerCredential(`${Buffer.from('null', 'utf8').toString('base64url')}.signature`)).toBeUndefined()
+  })
+})
+
+describe('credential horizon and state', () => {
+  it('reads the horizon a Relay reported only when it names an instant', () => {
+    expect(reportedOwnerCredentialExpiry('2027-01-15T08:00:00Z')).toBe('2027-01-15T08:00:00.000Z')
+    for (const unreadable of [undefined, null, '', 'tomorrow', 1_767_225_600_000]) {
+      expect(reportedOwnerCredentialExpiry(unreadable), String(unreadable)).toBeUndefined()
+    }
+  })
+
+  it('states the credential’s state for the address in force', () => {
+    const now = Date.parse('2026-10-23T00:00:00Z')
+    expect(ownerCredentialState(undefined, 'https://relay.example', now)).toBe('unverified')
+    // A credential minted by another Relay is not this address's credential.
+    expect(ownerCredentialState({ relay: 'https://other.example', credential: 'token' }, 'https://relay.example', now))
+      .toBe('unverified')
+    expect(ownerCredentialState({ relay: 'https://relay.example', credential: 'token' }, 'https://relay.example', now))
+      .toBe('verified')
+    expect(ownerCredentialState({
+      relay: 'https://relay.example', credential: 'token', expiresAt: '2026-12-01T00:00:00Z',
+    }, 'https://relay.example', now)).toBe('verified')
+    expect(ownerCredentialState({
+      relay: 'https://relay.example', credential: 'token', expiresAt: '2026-01-01T00:00:00Z',
+    }, 'https://relay.example', now)).toBe('expired')
+    // A stored horizon the browser cannot parse cannot prove the credential is still valid.
+    expect(ownerCredentialState({
+      relay: 'https://relay.example', credential: 'token', expiresAt: 'not-a-date',
+    }, 'https://relay.example', now)).toBe('expired')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-owner-identity.spec.ts b/packages/experimental/liveshare/tests/host-owner-identity.spec.ts
new file mode 100644
index 0000000000..1bb4fe6141
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-owner-identity.spec.ts
@@ -0,0 +1,123 @@
+/** Owner identity status is per Relay address: one address never reports another's facts. */
+
+import { mkdtempSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import { apply, type Config } from '../src/host/share-host.ts'
+import type {} from '../src/index.ts'
+import type { OwnerIdentityStatus as WireOwnerIdentityStatus } from '../src/share-api-types.ts'
+import { identityRelayWith, writeOwnerState } from './owner-identity-fixture.ts'
+
+interface OwnerRoutes {
+  readonly routes: Map<string, (request: Request) => Promise<Response>>
+  readonly host: Context
+}
+
+function ownerRoutes(): OwnerRoutes {
+  const routes = new Map<string, (request: Request) => Promise<Response>>()
+  const host = Object.assign(new Context(), {
+    connection: {
+      fetch: {
+        register: (route: { readonly path: string; readonly fetch: (request: Request) => Promise<Response> }) => {
+          routes.set(route.path, route.fetch)
+          return Promise.resolve(async () => {})
+        },
+      },
+    },
+  })
+  return { routes, host }
+}
+
+function ownerStateFile(relay: string): string {
+  return writeOwnerState(join(mkdtempSync(join(tmpdir(), 'liveshare-identity-')), 'owner-shares.json'), relay)
+}
+
+async function identityOf(host: Context, relay: string): Promise<WireOwnerIdentityStatus> {
+  return await host.liveshareShares.identity({ relay })
+}
+
+/** Credential payload fields the host decodes for display, in the Relay's own signed-payload shape. */
+function credentialPayload(overrides: Record<string, unknown> = {}): string {
+  const payload = {
+    displayName: '许翰翔',
+    subjectId: 'ou_owner',
+    avatarUrl: 'https://cdn.example/owner.png',
+    expiresAt: Date.now() + 7 * 24 * 60 * 60_000,
+    ...overrides,
+  }
+  return `${Buffer.from(JSON.stringify(payload), 'utf8').toString('base64url')}.fixture-signature`
+}
+
+async function submitCredential(
+  routes: OwnerRoutes['routes'],
+  credential: string = credentialPayload(),
+): Promise<void> {
+  const route = routes.get('/api/liveshare.ownerCredential')
+  expect(route).toBeDefined()
+  const response = await route?.(new Request('http://owner.local/api/liveshare.ownerCredential', {
+    method: 'POST',
+    headers: { 'content-type': 'application/json' },
+    body: JSON.stringify({ credential }),
+  }))
+  expect(response?.status).toBe(200)
+}
+
+describe('liveshare owner identity per relay', () => {
+  const closers: Array<() => Promise<void>> = []
+  afterEach(async () => {
+    for (const close of closers.splice(0).reverse()) await close()
+  })
+
+  it('reports each address support on its own', async () => {
+    const verified = await identityRelayWith()
+    const otherRelay = await identityRelayWith()
+    const unsupported = await identityRelayWith({ supported: false })
+    closers.push(verified.close, otherRelay.close, unsupported.close)
+    const { routes, host } = ownerRoutes()
+    closers.push(await apply(host, {
+      ownerStateFile: ownerStateFile(verified.relayUrl),
+    } satisfies Config))
+
+    await submitCredential(routes)
+    const bound = await identityOf(host, verified.relayUrl)
+    expect(bound).toMatchObject({ state: 'verified', relay: verified.relayUrl })
+    expect(bound.claim).toEqual({ claimed: 0, skipped: 0 })
+    // The avatar the credential carries reaches the page; a credential without one reports none.
+    expect(bound.avatarUrl).toBe('https://cdn.example/owner.png')
+    await submitCredential(routes, credentialPayload({ avatarUrl: undefined }))
+    expect(await identityOf(host, verified.relayUrl)).not.toHaveProperty('avatarUrl')
+
+    // Another address this host holds no credential for reports its own state, not the verified one.
+    expect(await identityOf(host, otherRelay.relayUrl)).toMatchObject({
+      state: 'unverified',
+      relay: otherRelay.relayUrl,
+    })
+
+    // Support is per address too: one Relay that cannot bind identity does not mark the others.
+    expect(await identityOf(host, unsupported.relayUrl)).toMatchObject({ state: 'relay-unsupported' })
+    expect(await identityOf(host, verified.relayUrl)).toMatchObject({ state: 'verified' })
+  })
+
+  it('ignores a late probe answer from another address', async () => {
+    const slowUnsupported = await identityRelayWith({ supported: false, probeDelayMs: 250 })
+    const supported = await identityRelayWith()
+    closers.push(slowUnsupported.close, supported.close)
+    const { routes, host } = ownerRoutes()
+    closers.push(await apply(host, {
+      ownerStateFile: ownerStateFile(slowUnsupported.relayUrl),
+    } satisfies Config))
+
+    // The host is still waiting on the first address's answer while the second one answers its own.
+    await submitCredential(routes)
+    expect(await identityOf(host, supported.relayUrl)).toMatchObject({
+      state: 'unverified',
+      relay: supported.relayUrl,
+    })
+    await new Promise((resolve) => { setTimeout(resolve, 400) })
+    // The late "unsupported" answer belongs to its own address and never reaches the other one.
+    expect(await identityOf(host, supported.relayUrl)).not.toMatchObject({ state: 'relay-unsupported' })
+    expect(await identityOf(host, slowUnsupported.relayUrl)).toMatchObject({ state: 'relay-unsupported' })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-relay-checks.spec.ts b/packages/experimental/liveshare/tests/host-relay-checks.spec.ts
new file mode 100644
index 0000000000..5b3bb237ac
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-relay-checks.spec.ts
@@ -0,0 +1,174 @@
+/**
+ * The two Relay checks as the owner host answers them.
+ *
+ * Connectivity is asked without a credential, so a Relay that refuses an anonymous request is still
+ * connected; the permission check registers a throwaway share with this host's own credential, so a
+ * refusal there is an authorization failure the owner has to act on.
+ */
+
+import { mkdtempSync, realpathSync, rmSync } from 'node:fs'
+import { createServer, type Server } from 'node:http'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import type { AddressInfo } from 'node:net'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import { apply, type Config } from '../src/host/share-host.ts'
+import type {} from '../src/index.ts'
+import { writeOwnerCredential, writeOwnerState } from './owner-identity-fixture.ts'
+
+interface OwnerRoutes {
+  readonly routes: Map<string, (request: Request) => Promise<Response>>
+  readonly host: Context
+}
+
+async function ownerHost(configured: string | undefined, file: string): Promise<OwnerRoutes> {
+  const routes = new Map<string, (request: Request) => Promise<Response>>()
+  const host = Object.assign(new Context(), {
+    connection: {
+      fetch: {
+        register: (route: { readonly path: string; readonly fetch: (request: Request) => Promise<Response> }) => {
+          routes.set(route.path, route.fetch)
+          return Promise.resolve(async () => {})
+        },
+      },
+    },
+  })
+  // Always anchor this host at the temporary state file: the default owner-state path belongs to the
+  // developer's installation and may name an address, which would make this fixture depend on it.
+  const config: Config = {
+    ownerStateFile: configured === undefined ? file : writeOwnerState(file, configured),
+  }
+  const dispose = await apply(host, config)
+  disposers.push(dispose, () => host.fiber.dispose())
+  return { routes, host }
+}
+
+/** One Relay stand-in that answers every request, and every gateway handshake, with one status. */
+async function relayAnswering(status: number): Promise<{ url: string; close: () => Promise<void> }> {
+  const server: Server = createServer((_request, response) => {
+    response.writeHead(status)
+    response.end('answered')
+  })
+  await new Promise<void>((resolve) => { server.listen(0, '127.0.0.1', resolve) })
+  const { port } = server.address() as AddressInfo
+  return {
+    url: `http://127.0.0.1:${String(port)}`,
+    close: () => new Promise<void>((resolve) => { server.close(() => { resolve() }) }),
+  }
+}
+
+interface RelayCheckBody {
+  readonly ok: boolean
+  readonly blocking: boolean
+  readonly httpReachable?: boolean
+  readonly error?: string
+}
+
+async function testRelay(host: Context): Promise<RelayCheckBody> {
+  return await host.liveshareShares.testRelay()
+}
+
+async function testPublish(host: Context): Promise<RelayCheckBody> {
+  return await host.liveshareShares.testPublish({ sessionId: 'session-1' })
+}
+
+const temporaryRoots: string[] = []
+function ownerStateFile(): string {
+  const root = realpathSync(mkdtempSync(join(tmpdir(), 'liveshare-relay-checks-')))
+  temporaryRoots.push(root)
+  return join(root, 'owner-shares.json')
+}
+
+const disposers: Array<() => unknown> = []
+const closers: Array<() => Promise<void>> = []
+afterEach(async () => {
+  vi.unstubAllGlobals()
+  try {
+    for (const close of closers.splice(0).reverse()) await close()
+    for (const dispose of disposers.splice(0).reverse()) await dispose()
+  } finally {
+    for (const root of temporaryRoots.splice(0)) rmSync(root, { recursive: true, force: true })
+  }
+})
+
+describe('liveshare owner Relay checks', () => {
+  it('treats a Relay that answers 401 as connected', async () => {
+    const relay = await relayAnswering(401)
+    closers.push(relay.close)
+    const { host } = await ownerHost(relay.url, ownerStateFile())
+
+    // The connectivity step presents no credential, so a refusal meant for a credential is still an
+    // answer: the address is reachable, and nothing about authorization is read here.
+    await expect(testRelay(host)).resolves.toEqual({
+      ok: true,
+      httpReachable: true,
+      blocking: false,
+    })
+  })
+
+  it('reports an address that does not answer with its transport cause and the relay prefix', async () => {
+    const unreachable = 'http://relay.unreachable.example.test'
+    const { host } = await ownerHost(unreachable, ownerStateFile())
+    // The transport rejection a refused connection raises, substituted at the network boundary: this
+    // environment reaches every address through a proxy, which answers for the far side instead.
+    const refused = Object.assign(new TypeError('fetch failed'), {
+      cause: Object.assign(new Error('connect ECONNREFUSED 127.0.0.1:9'), { code: 'ECONNREFUSED' }),
+    })
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(refused)))
+    try {
+      const answer = await testRelay(host)
+      expect(answer.ok).toBe(false)
+      expect(answer.httpReachable).toBe(false)
+      expect(answer.blocking).toBe(true)
+      // The dialog prints this text unchanged, so it names the address and the transport cause.
+      expect(answer.error).toBe(`${unreachable}: ECONNREFUSED: connect ECONNREFUSED 127.0.0.1:9`)
+    } finally {
+      vi.unstubAllGlobals()
+    }
+  })
+
+  it('reports a refused registration as a blocking permission failure about the credential', async () => {
+    const relay = await relayAnswering(401)
+    closers.push(relay.close)
+    const file = ownerStateFile()
+    writeOwnerCredential(file, relay.url)
+    const { host } = await ownerHost(relay.url, file)
+
+    const answer = await testPublish(host)
+    expect(answer.ok).toBe(false)
+    expect(answer.blocking).toBe(true)
+    // A refusal is the Relay's decision about this host's credential, so the Host names it as an
+    // authorization problem and keeps the Relay's own status beside it.
+    expect(answer.error).toContain('owner credential')
+    expect(answer.error).toContain('relay refused registration status=401')
+    expect(answer.error?.startsWith(`${relay.url}: `)).toBe(true)
+  })
+
+  it('states the missing address instead of asking any Relay', async () => {
+    const { host } = await ownerHost(undefined, ownerStateFile())
+
+    // Nothing is in force to ask about, so both checks name the missing address and contact nothing.
+    await expect(testRelay(host)).resolves.toEqual({
+      ok: false,
+      httpReachable: false,
+      blocking: true,
+      error: 'no Liveshare server address is saved',
+    })
+    await expect(testPublish(host)).resolves.toEqual({
+      ok: false,
+      blocking: true,
+      error: 'no Liveshare server address is saved',
+    })
+  })
+
+  it('refuses the permission step when no credential is stored for the address', async () => {
+    const relay = await relayAnswering(401)
+    closers.push(relay.close)
+    const { host } = await ownerHost(relay.url, ownerStateFile())
+
+    const answer = await testPublish(host)
+    expect(answer).toMatchObject({ ok: false, blocking: true })
+    expect(answer.error).toContain('no verified owner credential')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-relay-override.spec.ts b/packages/experimental/liveshare/tests/host-relay-override.spec.ts
new file mode 100644
index 0000000000..a9af57ca27
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-relay-override.spec.ts
@@ -0,0 +1,198 @@
+import { mkdtempSync, readFileSync, realpathSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import { apply } from '../src/host/share-host.ts'
+import type {} from '../src/index.ts'
+import { identityRelay, writeOwnerCredential } from './owner-identity-fixture.ts'
+
+interface OwnerRoutes {
+  readonly routes: Map<string, (request: Request) => Promise<Response>>
+  readonly host: Context
+}
+
+interface RelayStateBody {
+  readonly override?: string
+  readonly effective?: string
+}
+
+function ownerRoutes(): OwnerRoutes {
+  const routes = new Map<string, (request: Request) => Promise<Response>>()
+  const host = Object.assign(new Context(), {
+    connection: {
+      fetch: {
+        register: (route: { readonly path: string; readonly fetch: (request: Request) => Promise<Response> }) => {
+          routes.set(route.path, route.fetch)
+          return Promise.resolve(async () => {})
+        },
+      },
+    },
+  })
+  return { routes, host }
+}
+
+const temporaryRoots: string[] = []
+function ownerStateFile(): string {
+  const root = realpathSync(mkdtempSync(join(tmpdir(), 'liveshare-relay-override-')))
+  temporaryRoots.push(root)
+  return join(root, 'owner-shares.json')
+}
+
+const fakeRelay = identityRelay
+
+async function readRelayState(host: Context): Promise<RelayStateBody> {
+  return host.liveshareShares.relay()
+}
+
+async function writeRelayState(host: Context, relayUrl: string | null): Promise<RelayStateBody> {
+  return await host.liveshareShares.setRelay({ relayUrl })
+}
+
+async function createShare(host: Context): Promise<string> {
+  const created = await host.liveshareShares.create({
+    sessionId: 'session-1',
+    sessionTitle: 'Session',
+    accessMode: 'open',
+  })
+  expect(typeof created.link).toBe('string')
+  return created.link
+}
+
+describe('liveshare owner relay address', () => {
+  const closers: Array<() => Promise<void>> = []
+  afterEach(async () => {
+    try {
+      for (const close of closers.splice(0).reverse()) await close()
+    } finally {
+      for (const root of temporaryRoots.splice(0)) rmSync(root, { recursive: true, force: true })
+    }
+  })
+
+  async function start(file: string): Promise<OwnerRoutes> {
+    const { routes, host } = ownerRoutes()
+    closers.push(() => host.fiber.dispose())
+    const dispose = await apply(host, { ownerStateFile: file })
+    closers.push(dispose)
+    return { routes, host }
+  }
+
+  /**
+   * Hand the host a credential for the Relay it will publish to next.
+   *
+   * The host binds a stored credential to the address in force and refuses creation without one, so a
+   * case that publishes at a new address models that exchange.
+   */
+  async function verify(routes: OwnerRoutes['routes'], relayUrl: string): Promise<void> {
+    const route = routes.get('/api/liveshare.ownerCredential')
+    expect(route).toBeDefined()
+    const response = await route?.(new Request('http://owner.local/api/liveshare.ownerCredential', {
+      method: 'POST',
+      headers: { 'content-type': 'application/json' },
+      body: JSON.stringify({ credential: 'fixture-payload.fixture-signature' }),
+    }))
+    expect(response?.status).toBe(200)
+    expect(await response?.json()).toMatchObject({ state: 'verified', relay: relayUrl })
+  }
+
+  it('starts with no address and reports that none is saved', async () => {
+    const { host } = await start(ownerStateFile())
+
+    await expect(readRelayState(host)).resolves.toEqual({})
+    // Creating is the operation the missing address blocks, and the refusal names it.
+    await expect(host.liveshareShares.create({ sessionId: 'session-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/relay-url-required' })
+    await expect(host.liveshareShares.testRelay()).resolves.toMatchObject({
+      ok: false, httpReachable: false, blocking: true, error: 'no Liveshare server address is saved',
+    })
+    await expect(host.liveshareShares.testPublish({ sessionId: 'session-1' })).resolves.toMatchObject({
+      ok: false, blocking: true, error: 'no Liveshare server address is saved',
+    })
+  })
+
+  it('saves an address, persists it, and publishes new shares to it', async () => {
+    const relay = await fakeRelay()
+    closers.push(relay.close)
+    const file = ownerStateFile()
+    const { routes, host } = await start(file)
+
+    await expect(writeRelayState(host, relay.relayUrl)).resolves.toEqual({
+      override: relay.relayUrl,
+      effective: relay.relayUrl,
+    })
+    await verify(routes, relay.relayUrl)
+    expect(await createShare(host)).toContain(relay.relayUrl)
+    expect(JSON.parse(readFileSync(file, 'utf8'))).toMatchObject({ relayUrl: relay.relayUrl })
+  })
+
+  it('restores the saved address after a restart', async () => {
+    const relay = await fakeRelay()
+    closers.push(relay.close)
+    const file = ownerStateFile()
+    const first = await start(file)
+    writeOwnerCredential(file, relay.relayUrl)
+    await writeRelayState(first.host, relay.relayUrl)
+    await verify(first.routes, relay.relayUrl)
+    await first.host.fiber.dispose()
+
+    // The address is the owner's saved value, so a later host reads the same one from the state file.
+    const { host } = await start(file)
+    await expect(readRelayState(host)).resolves.toEqual({
+      override: relay.relayUrl,
+      effective: relay.relayUrl,
+    })
+    expect(await createShare(host)).toContain(relay.relayUrl)
+  })
+
+  it('clears the saved address and returns to no address', async () => {
+    const relay = await fakeRelay()
+    closers.push(relay.close)
+    const file = ownerStateFile()
+    const { host } = await start(file)
+    writeOwnerCredential(file, relay.relayUrl)
+    await writeRelayState(host, relay.relayUrl)
+
+    await expect(writeRelayState(host, null)).resolves.toEqual({})
+    await expect(host.liveshareShares.create({ sessionId: 'session-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/relay-url-required' })
+    // Nothing is stored as in force: the state file carries no address any more.
+    expect(JSON.parse(readFileSync(file, 'utf8'))).not.toHaveProperty('relayUrl')
+  })
+
+  it('rejects an invalid relay URL without changing state', async () => {
+    const relay = await fakeRelay()
+    closers.push(relay.close)
+    const { host } = await start(ownerStateFile())
+    await writeRelayState(host, relay.relayUrl)
+
+    await expect(host.liveshareShares.setRelay({ relayUrl: 'not-a-url' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/invalid-relay-url' })
+    expect(await readRelayState(host)).toEqual({ override: relay.relayUrl, effective: relay.relayUrl })
+  })
+
+  it('keeps an existing share on the relay it was published to', async () => {
+    const first = await fakeRelay()
+    const second = await fakeRelay()
+    closers.push(first.close, second.close)
+    const file = ownerStateFile()
+    const { routes, host } = await start(file)
+
+    await writeRelayState(host, first.relayUrl)
+    writeOwnerCredential(file, first.relayUrl)
+    await verify(routes, first.relayUrl)
+    const firstLink = await createShare(host)
+    expect(firstLink).toContain(first.relayUrl)
+    await writeRelayState(host, second.relayUrl)
+    writeOwnerCredential(file, second.relayUrl)
+    await verify(routes, second.relayUrl)
+    const secondLink = await createShare(host)
+    expect(secondLink).toContain(second.relayUrl)
+
+    const persisted = JSON.parse(readFileSync(file, 'utf8')) as {
+      shares: Array<{ shareId: string; relay?: string }>
+    }
+    const firstShareId = new URL(firstLink).searchParams.get('shareId')
+    const stored = persisted.shares.find(share => share.shareId === firstShareId)
+    expect(stored?.relay).toBe(first.relayUrl)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-restore.spec.ts b/packages/experimental/liveshare/tests/host-restore.spec.ts
new file mode 100644
index 0000000000..b9ea17eac4
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-restore.spec.ts
@@ -0,0 +1,439 @@
+import { createServer, type AddressInfo } from 'node:net'
+import { createServer as createHttpServer } from 'node:http'
+import { mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import { WebSocketServer } from 'ws'
+import { apply, type Config } from '../src/host/share-host.ts'
+import type {} from '../src/index.ts'
+
+interface GatewayUpgrade {
+  readonly shareId: string
+  readonly authorization: string | undefined
+  readonly search: URLSearchParams
+}
+
+interface OwnerRoutes {
+  readonly routes: Map<string, (request: Request) => Promise<Response>>
+  readonly host: Context
+}
+
+/**
+ * One owner host whose Cordis service lookups are the test's own fakes.
+ * @param services - Services the host reads through `ctx.get`, keyed by service name.
+ * @returns The registered routes and the host context.
+ */
+function ownerRoutes(services: Record<string, unknown> = {}): OwnerRoutes {
+  const routes = new Map<string, (request: Request) => Promise<Response>>()
+  const context = new Context()
+  // Provide the fakes on the real Context: the host reads them through `ctx.get` and registers its
+  // projections with `ctx.inject`, both of which read this service store.
+  for (const [name, service] of Object.entries(services)) context.provide(name, service as never)
+  const host = Object.assign(context, {
+    connection: {
+      fetch: {
+        register: (route: { readonly path: string; readonly fetch: (request: Request) => Promise<Response> }) => {
+          routes.set(route.path, route.fetch)
+          return Promise.resolve(async () => {})
+        },
+      },
+    },
+  })
+  return { routes, host }
+}
+
+/** Temporary state directories this spec created, removed once every host is stopped. */
+const temporaryRoots: string[] = []
+
+function ownerStateFile(relayUrl: string, shares: readonly unknown[]): string {
+  const dir = mkdtempSync(join(tmpdir(), 'liveshare-restore-'))
+  temporaryRoots.push(dir)
+  const file = join(dir, 'owner-shares.json')
+  writeFileSync(file, JSON.stringify({
+    relayUrl,
+    shares: shares.map(share => ({ relay: relayUrl, ...(share as Record<string, unknown>) })),
+  }))
+  return file
+}
+
+/** One stored record; the fields under test are the ones a build may or may not have written. */
+function storedRecord(shareId: string, extra: Record<string, unknown>): Record<string, unknown> {
+  return {
+    shareId,
+    sessionId: `session-${shareId}`,
+    sessionTitle: shareId,
+    accessMode: 'open',
+    gatewayToken: `token-${shareId}`,
+    allowedSubjectIds: [],
+    createdAt: '2026-09-01T00:00:00.000Z',
+    ...extra,
+  }
+}
+
+/**
+ * One live agent for a running Session, shaped the way the host reads it.
+ *
+ * The Session carries the header every real one has, because the host reads the working directory out of
+ * it while installing a layer: a live agent whose Session had no header would fail there rather than
+ * reach the decision under test.
+ * @param sessionId - Session the agent drives.
+ * @param cancel - Cancellation the host is expected to request.
+ * @returns The agent as the `agents` service hands it out.
+ */
+function liveAgent(sessionId: string, cancel: (cause: unknown, options?: unknown) => void): Record<string, unknown> {
+  return {
+    status: 'running',
+    session: { id: sessionId, header: { cwd: '/tmp' } },
+    cancel,
+  }
+}
+
+async function closedPort(): Promise<number> {
+  const probe = createServer()
+  await new Promise<void>((resolve) => { probe.listen(0, '127.0.0.1', resolve) })
+  const port = (probe.address() as AddressInfo).port
+  await new Promise<void>((resolve) => { probe.close(() => { resolve() }) })
+  return port
+}
+
+describe('liveshare owner host', () => {
+  const closers: Array<() => Promise<void>> = []
+  afterEach(async () => {
+    // Stop the owner host before the fake Relay: closing the server waits for open gateway sockets.
+    for (const close of closers.splice(0).reverse()) await close()
+    // Then remove only the state directories this spec made, once nothing it started is still writing.
+    for (const root of temporaryRoots.splice(0)) rmSync(root, { recursive: true, force: true })
+  })
+
+  it('loads a record with its own tier and fork switch', async () => {
+    const upgrades: GatewayUpgrade[] = []
+    const relay = new WebSocketServer({ host: '127.0.0.1', port: 0 })
+    await new Promise<void>((resolve) => { relay.once('listening', resolve) })
+    relay.on('connection', (_socket, request) => {
+      const url = new URL(request.url ?? '/', 'http://relay.local')
+      upgrades.push({
+        shareId: url.searchParams.get('shareId') ?? '',
+        authorization: request.headers.authorization,
+        search: url.searchParams,
+      })
+    })
+    closers.push(async () => {
+      await new Promise<void>((resolve) => { relay.close(() => { resolve() }) })
+    })
+    const port = (relay.address() as AddressInfo).port
+
+    const { host } = ownerRoutes()
+    const dispose = await apply(host, {      ownerStateFile: ownerStateFile(`http://127.0.0.1:${String(port)}`, [
+      // Records a build before tiers wrote: the stored switch is the record's own fork decision.
+      storedRecord('legacy-fork', { allowsFork: true }),
+      storedRecord('legacy-view', { allowsFork: false }),
+      storedRecord('legacy-none', {}),
+
+      storedRecord('explicit-write', { sessionMode: 'write', allowsFork: true }),
+      // A record that states a tier and a switch that disagree about forking is not contradictory any
+      // more: the tier says nothing about forking, so both facts stand.
+      storedRecord('view-with-fork', { sessionMode: 'view', allowsFork: true }),
+    ]),
+    } satisfies Config)
+    closers.push(dispose)
+
+    await expect.poll(() => upgrades.length, { timeout: 15_000 }).toBe(5)
+    const modeOf = (shareId: string): string | null | undefined =>
+      upgrades.find(upgrade => upgrade.shareId === shareId)?.search.get('sessionMode')
+    // The tunnel serializes the flag as a query parameter, so "no flag" and a false flag read the same.
+    const forkOf = (shareId: string): boolean => {
+      const value = upgrades.find(upgrade => upgrade.shareId === shareId)?.search.get('allowsFork')
+      return value === '1' || value === 'true'
+    }
+
+    expect(modeOf('legacy-fork')).toBe('view')
+    expect(forkOf('legacy-fork')).toBe(true)
+    expect(modeOf('legacy-view')).toBe('view')
+    expect(forkOf('legacy-view')).toBe(false)
+    expect(modeOf('legacy-none')).toBe('view')
+    expect(forkOf('legacy-none')).toBe(false)
+    expect(modeOf('explicit-write')).toBe('write')
+    expect(forkOf('explicit-write')).toBe(true)
+    expect(modeOf('view-with-fork')).toBe('view')
+    expect(forkOf('view-with-fork')).toBe(true)
+  }, 20_000)
+
+  it('ignores an attachment-upload switch left in an older owner state file', async () => {
+    const upgrades: GatewayUpgrade[] = []
+    const relay = new WebSocketServer({ host: '127.0.0.1', port: 0 })
+    await new Promise<void>((resolve) => { relay.once('listening', resolve) })
+    relay.on('connection', (_socket, request) => {
+      upgrades.push({
+        shareId: new URL(request.url ?? '/', 'http://relay.local').searchParams.get('shareId') ?? '',
+        authorization: request.headers.authorization,
+        search: new URL(request.url ?? '/', 'http://relay.local').searchParams,
+      })
+    })
+    closers.push(async () => {
+      await new Promise<void>((resolve) => { relay.close(() => { resolve() }) })
+    })
+    const port = (relay.address() as AddressInfo).port
+    const { host } = ownerRoutes()
+    closers.push(await apply(host, {      ownerStateFile: ownerStateFile(`http://127.0.0.1:${String(port)}`, [
+      // A build before the switch retired wrote the field; a value no build wrote must not fail the load.
+      storedRecord('legacy-upload', { allowsFileUpload: true }),
+      storedRecord('malformed-upload', { allowsFileUpload: 'yes' }),
+    ]),
+    } satisfies Config))
+
+    await expect.poll(() => upgrades.length, { timeout: 15_000 }).toBe(2)
+    // The retired switch is not read back: both records load and no registration states it.
+    for (const shareId of ['legacy-upload', 'malformed-upload']) {
+      const upgrade = upgrades.find(candidate => candidate.shareId === shareId)
+      expect(upgrade?.search.get('allowsFileUpload'), shareId).toBeNull()
+      expect(upgrade?.search.get('sessionMode'), shareId).toBe('view')
+    }
+  }, 20_000)
+
+  it('keeps every combination of a tier and a fork switch, and rejects only a tier it cannot read', async () => {
+    // The tier says nothing about forking and the switch nothing about the tier, so every combination is
+    // a record the owner could have meant. A tier no build ever wrote is still refused, and the whole
+    // file is rejected rather than partially loaded, so a later save cannot drop the record.
+    const file = ownerStateFile('http://127.0.0.1:1', [
+      storedRecord('view-with-fork', { sessionMode: 'view', allowsFork: true }),
+      storedRecord('write-without-fork', { sessionMode: 'write', allowsFork: false }),
+      storedRecord('future', { sessionMode: 'admin', allowsFork: true }),
+    ])
+    const before = readFileSync(file, 'utf8')
+    const { host } = ownerRoutes()
+
+    await expect(apply(host, {
+      ownerStateFile: file,
+    } satisfies Config)).rejects.toThrow(/invalid owner state file/u)
+
+    // Every record is still on disk, byte for byte, and a later save never had a host to run from.
+    expect(readFileSync(file, 'utf8')).toBe(before)
+    const persisted = JSON.parse(readFileSync(file, 'utf8')) as { shares: readonly unknown[] }
+    expect(persisted.shares).toHaveLength(3)
+  })
+
+  it('restores persisted shares with their expiry and token', async () => {
+    const upgrades: GatewayUpgrade[] = []
+    const relay = new WebSocketServer({ host: '127.0.0.1', port: 0 })
+    await new Promise<void>((resolve) => { relay.once('listening', resolve) })
+    relay.on('connection', (_socket, request) => {
+      const url = new URL(request.url ?? '/', 'http://relay.local')
+      upgrades.push({
+        shareId: url.searchParams.get('shareId') ?? '',
+        authorization: request.headers.authorization,
+        search: url.searchParams,
+      })
+    })
+    closers.push(async () => {
+      await new Promise<void>((resolve) => { relay.close(() => { resolve() }) })
+    })
+    const port = (relay.address() as AddressInfo).port
+
+    const { host } = ownerRoutes()
+    const dispose = await apply(host, {      ownerStateFile: ownerStateFile(`http://127.0.0.1:${String(port)}`, [
+      {
+        shareId: 'share-expiring',
+        sessionId: 'session-expiring',
+        sessionTitle: 'Expiring',
+        accessMode: 'open',
+        gatewayToken: 'token-expiring',
+        allowedSubjectIds: [],
+        createdAt: '2026-09-01T00:00:00.000Z',
+        expiresAt: '2026-09-10T00:00:00.000Z',
+      },
+      {
+        shareId: 'share-permanent',
+        sessionId: 'session-permanent',
+        sessionTitle: 'Permanent',
+        accessMode: 'open',
+        gatewayToken: 'token-permanent',
+        allowedSubjectIds: [],
+        createdAt: '2026-09-01T00:00:00.000Z',
+      },
+    ]),
+    } satisfies Config)
+    closers.push(dispose)
+
+    await expect.poll(() => upgrades.length, { timeout: 15_000 }).toBe(2)
+    const expiring = upgrades.find(upgrade => upgrade.shareId === 'share-expiring')
+    const permanent = upgrades.find(upgrade => upgrade.shareId === 'share-permanent')
+    expect(expiring?.search.get('expiresAt')).toBe('2026-09-10T00:00:00.000Z')
+    expect(expiring?.authorization).toBe('Bearer token-expiring')
+    expect(permanent?.search.get('expiresAt')).toBe(null)
+    expect(permanent?.authorization).toBe('Bearer token-permanent')
+  }, 20_000)
+
+  it('cancels the running source turn of a share whose deadline passes', async () => {
+    const cancel = vi.fn()
+    // What a running source Session looks like to the host: a live agent the deadline stops.
+    const { host } = ownerRoutes({
+      agents: { get: () => liveAgent('session-expiring', cancel) },
+    })
+    const dispose = await apply(host, {      ownerStateFile: ownerStateFile(`http://127.0.0.1:${String(await closedPort())}`, [
+      // The share is one a viewer could already be driving: a stored write share, not the view a record
+      // without a mode loads as. Its deadline is what ends that grant.
+      storedRecord('expiring', {
+        sessionMode: 'write',
+        allowsFork: true,
+        expiresAt: new Date(Date.now() + 150).toISOString(),
+      }),
+    ]),
+    } satisfies Config)
+    closers.push(dispose)
+
+    // The deadline the record carried is what the host waits for: the turn is stopped with the owner's own
+    // cancellation, not left to reach its end by itself.
+    await expect.poll(() => cancel.mock.calls.length, { timeout: 5_000 }).toBe(1)
+    expect(cancel).toHaveBeenCalledWith({ kind: 'user' }, { keepInbox: true })
+  }, 20_000)
+
+  it('stops the running turn when the Relay stops admitting a viewer', async () => {
+    const cancel = vi.fn()
+    // A Relay whose committed snapshot the owner host re-reads through the management route. The first
+    // answer admits the viewer; the second narrows the share so that viewer is no longer admitted.
+    let authority: Record<string, unknown> = {
+      version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'write',
+    }
+    const relay = createHttpServer((request, response) => {
+      response.writeHead(200, { 'content-type': 'application/json' })
+      response.end(JSON.stringify(request.url?.includes('owner-credential') === true
+        ? { supported: true }
+        : authority))
+    })
+    await new Promise<void>((resolve) => { relay.listen(0, '127.0.0.1', resolve) })
+    closers.push(async () => { await new Promise<void>((resolve) => { relay.close(() => { resolve() }) }) })
+    const port = (relay.address() as AddressInfo).port
+    const { host } = ownerRoutes({
+      agents: { get: () => liveAgent('session-1', cancel) },
+    })
+    const dispose = await apply(host, {
+      ownerIdentity: { providerId: 'mock', tenantId: 'tenant-a', subjectId: 'owner', displayName: 'Owner' },
+      ownerStateFile: ownerStateFile(`http://127.0.0.1:${String(port)}`,
+        [storedRecord('share-1', { sessionMode: 'write', allowsFork: true })]),
+    } satisfies Config)
+    closers.push(dispose)
+
+    await expect(host.liveshareShares.list()).resolves.toMatchObject({
+      shares: [expect.objectContaining({ shareId: 'share-1' })],
+    })
+    // The first snapshot states access this host already held, so nothing is cancelled.
+    expect(cancel).not.toHaveBeenCalled()
+
+    // The Relay narrows the share to a stored allowlist that does not name this viewer: the host cannot
+    // attribute the running turn, so it stops the turn the Session is running now.
+    authority = { version: 2, accessMode: 'selected', allowedSubjectIds: [], sessionMode: 'write' }
+    await host.liveshareShares.list()
+    await expect.poll(() => cancel.mock.calls.length, { timeout: 5_000 }).toBe(1)
+    expect(cancel).toHaveBeenCalledWith({ kind: 'user' }, { keepInbox: true })
+  }, 20_000)
+
+  it('registers no route for the retired approval flow', async () => {
+    const { routes, host } = ownerRoutes()
+    const dispose = await apply(host, {      ownerStateFile: ownerStateFile(`http://127.0.0.1:${String(await closedPort())}`, []),
+    } satisfies Config)
+    closers.push(dispose)
+
+    for (const gone of ['/api/liveshare.requests', '/api/liveshare.grantView', '/api/liveshare.revokeView']) {
+      expect(routes.get(gone), gone).toBeUndefined()
+    }
+  }, 20_000)
+
+  it('keeps what an unreachable Relay could not take, and refuses what only the Relay can', async () => {
+    const { host } = ownerRoutes()
+    const nativeFetch = globalThis.fetch
+    let reachable = false
+    const deletions: string[] = []
+    vi.stubGlobal('fetch', async (input: RequestInfo | URL, init?: RequestInit) => {
+      const request = new Request(input, init)
+      if (!new URL(request.url).hostname.startsWith('127.0.0.1')) return nativeFetch(input, init)
+      if (!reachable) throw new Error('fixture Relay unavailable')
+      deletions.push(`${request.method} ${new URL(request.url).pathname}${new URL(request.url).search}`)
+      return Response.json({})
+    })
+    closers.push(async () => { vi.unstubAllGlobals() })
+    const port = await closedPort()
+    const stateFile = ownerStateFile(`http://127.0.0.1:${String(port)}`, [{
+      shareId: 'share-1',
+      sessionId: 'session-1',
+      sessionTitle: 'Session',
+      accessMode: 'open',
+      gatewayToken: 'token-1',
+      allowedSubjectIds: [],
+      createdAt: '2026-09-01T00:00:00.000Z',
+    }])
+    const dispose = await apply(host, {
+      ownerStateFile: stateFile,
+    } satisfies Config)
+    closers.push(dispose)
+
+    // The Remote carries the request as a value, so there is no body to parse: an empty id names a
+    // share this host does not hold.
+    await expect(host.liveshareShares.stop({ shareId: '' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/share-not-found' })
+
+    // Stopping a share is the owner's own decision, so an unreachable Relay cannot hold it open: the
+    // host drops the share here and reports the Relay row it could not delete.
+    await expect(host.liveshareShares.stop({ shareId: 'share-1' }))
+      .resolves.toEqual({ ok: true, relay: 'unreachable' })
+    await expect(host.liveshareShares.stop({ shareId: 'share-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/share-not-found' })
+
+    // The row the Relay never deleted is kept with the token that deletes it, so the owner's stop is
+    // not lost with the connection that could not deliver it.
+    const pending = (): unknown => (JSON.parse(readFileSync(stateFile, 'utf8')) as { pendingRemovals?: unknown }).pendingRemovals
+    expect(pending()).toEqual([{
+      relay: `http://127.0.0.1:${String(port)}`,
+      shareId: 'share-1',
+      gatewayToken: 'token-1',
+    }])
+
+    // The Relay comes back on that address: the next owner request delivers the deletion it owes and
+    // drops the record, so the Relay learns of the stop without waiting for the row to expire.
+    reachable = true
+
+    await host.liveshareShares.list()
+    await vi.waitFor(() => {
+      expect(deletions).toContain('DELETE /__liveshare/share?shareId=share-1')
+    })
+    await vi.waitFor(() => { expect(pending()).toBeUndefined() })
+  })
+
+  it('re-registers a share stored with the withdrawn mode as selected', async () => {
+    const upgrades: GatewayUpgrade[] = []
+    const relay = new WebSocketServer({ host: '127.0.0.1', port: 0 })
+    await new Promise<void>((resolve) => { relay.once('listening', resolve) })
+    relay.on('connection', (_socket, request) => {
+      const url = new URL(request.url ?? '/', 'http://relay.local')
+      upgrades.push({
+        shareId: url.searchParams.get('shareId') ?? '',
+        authorization: request.headers.authorization,
+        search: url.searchParams,
+      })
+    })
+    closers.push(async () => {
+      await new Promise<void>((resolve) => { relay.close(() => { resolve() }) })
+    })
+    const port = (relay.address() as AddressInfo).port
+
+    const { host } = ownerRoutes()
+    const dispose = await apply(host, {      ownerStateFile: ownerStateFile(`http://127.0.0.1:${String(port)}`, [{
+      shareId: 'share-withdrawn',
+      sessionId: 'session-withdrawn',
+      sessionTitle: 'Withdrawn',
+      accessMode: 'selected',
+      gatewayToken: 'token-withdrawn',
+      allowedSubjectIds: ['mock:acceptance-tenant:viewer'],
+      createdAt: '2026-09-01T00:00:00.000Z',
+    }]),
+    } satisfies Config)
+    closers.push(dispose)
+
+    await expect.poll(() => upgrades.length, { timeout: 15_000 }).toBe(1)
+    const upgrade = upgrades[0]
+    expect(upgrade?.search.get('accessMode')).toBe('selected')
+    // The stored ACL travels with the revived registration, so the mode change never widens it.
+    expect(upgrade?.search.getAll('allowedSubjectId')).toEqual(['mock:acceptance-tenant:viewer'])
+  }, 20_000)
+})
diff --git a/packages/experimental/liveshare/tests/host-share-remote.security.spec.ts b/packages/experimental/liveshare/tests/host-share-remote.security.spec.ts
new file mode 100644
index 0000000000..1321f0b5a2
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-share-remote.security.spec.ts
@@ -0,0 +1,172 @@
+/**
+ * Owner share management is owner-only even when it arrives over Typert Remote.
+ *
+ * The owner Peer reaches the one share-management implementation. A `share-viewer` Peer is
+ * decided by the `share-viewer` policy before any method runs, so a refused call cannot create a
+ * share, register one with the Relay, or change the selected address.
+ */
+import { existsSync, mkdtempSync, readFileSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { Context } from '@deepseek-ai/cordis'
+import { mountAgentLoopTestDependencies, mountAgentLoopTestHarness } from '@deepseek-ai/dsh-agent-loop-testkit'
+import TypertGateway from '@deepseek-ai/dsh-api-gateway'
+import RemoteAccessService from '@deepseek-ai/dsh-api-remote-access'
+import { Peer } from '@deepseek-ai/dsh-client-connection'
+import type { TunnelWorkerEvent } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { createSessionTestController } from '../../../api/session-controller/tests/test-remote.ts'
+import { apply } from '../src/host/share-host.ts'
+import type { TunnelWorkerInput } from '../src/host/tunnel-worker.ts'
+import { writeOwnerState } from './owner-identity-fixture.ts'
+
+const worker = vi.hoisted(() => ({
+  listener: undefined as ((event: TunnelWorkerEvent) => void) | undefined,
+  sent: [] as TunnelWorkerInput[],
+}))
+
+vi.mock('../src/host/tunnel-worker.ts', () => ({
+  TunnelWorker: class {
+    start() {}
+    onEvent(listener: (event: TunnelWorkerEvent) => void) { worker.listener = listener; return () => {} }
+    send(command: TunnelWorkerInput) { worker.sent.push(command) }
+    stop() { worker.listener = undefined; return Promise.resolve() }
+  },
+}))
+
+const actor = { providerId: 'mock', tenantId: 'tenant', subjectId: 'viewer' }
+
+interface Harness {
+  readonly owner: Peer
+  readonly viewer: Peer
+  readonly invoke: (peer: Peer, method: string, args: Record<string, unknown>) => Promise<unknown>
+  readonly stateFile: string
+}
+
+/**
+ * Mount a real Gateway and remote access service over an owner host whose worker is a recorder.
+ * @returns Peers and the direct Remote invocation used by both cases.
+ */
+async function harness(): Promise<Harness> {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-share-remote-'))
+  const stateFile = join(directory, 'owner-shares.json')
+  const ctx = new Context()
+  await ctx.plugin(TypertRegistry)
+  await ctx.plugin(RemoteAccessService)
+  ctx.provide('connection', {
+    fetch: {
+      register: (route: { readonly path: string; readonly fetch: (request: Request) => Promise<Response> }) => {
+        void route
+        return () => {}
+      },
+    },
+    rpc: { intercept: () => () => {} },
+    createPeer: (options: ConstructorParameters<typeof Peer>[1]) => new Peer(ctx, options),
+  } as never)
+  await ctx.plugin(TypertGateway, {})
+  // Startup probes the effective Relay for owner-credential support and, with no stored shares,
+  // reaches no share route. A share's authority read would use the same address.
+  vi.stubGlobal('fetch', vi.fn(async (input: RequestInfo | URL) => {
+    const url = new URL(input instanceof Request ? input.url : String(input))
+    if (url.pathname.endsWith('/__liveshare/owner-credential')) return Response.json({ supported: true })
+    if (url.pathname.endsWith('/__liveshare/requests')) {
+      return Response.json({ version: 1, accessMode: 'open', allowedSubjectIds: [],
+        sessionMode: 'view', allowsFork: false })
+    }
+    return new Response('', { status: 404 })
+  }))
+  worker.sent.length = 0
+  const dispose = await apply(ctx, {
+    ownerStateFile: writeOwnerState(stateFile, 'https://relay.test'),
+  })
+  // The Session resource kind's default resolver is registered by the Session Controller, the domain
+  // that owns the kind, so these calls decide against that registration and not a stand-in.
+  await mountAgentLoopTestDependencies(ctx)
+  await mountAgentLoopTestHarness(ctx)
+  await createSessionTestController(ctx, {
+    cwd: process.cwd(),
+    defaultModelSelection: () => ({ provider: 'unused', model: 'unused' }),
+  })
+  onTestFinished(async () => {
+    await dispose()
+    await ctx.fiber.dispose()
+    vi.unstubAllGlobals()
+    rmSync(directory, { recursive: true, force: true })
+  })
+  expect(ctx.get('liveshareShares')).toBeDefined()
+  const invoke = (peer: Peer, method: string, args: Record<string, unknown>): Promise<unknown> =>
+    ctx.typertGateway.invoke({ peer, namespace: 'liveshareShares', method, args })
+  return {
+    owner: new Peer(ctx, { principal: { kind: 'owner' } }),
+    viewer: new Peer(ctx, { principal: { kind: 'share-viewer', shareId: 'share-1', actor } }),
+    invoke,
+    stateFile,
+  }
+}
+
+describe('liveshare owner share management over Remote', () => {
+  it('serves the owner Peer\u2019s share list', async () => {
+    const { invoke, owner } = await harness()
+    await expect(invoke(owner, 'list', {})).resolves.toEqual({ shares: [] })
+  })
+
+  it('refuses every management method to a share viewer Peer without side effects', async () => {
+    const { invoke, owner, viewer, stateFile } = await harness()
+    const calls: ReadonlyArray<readonly [string, Record<string, unknown>]> = [
+      ['list', {}],
+      ['create', { request: { sessionId: 'session-1' } }],
+      ['stop', { request: { shareId: 'share-1' } }],
+      ['setRelay', { request: { relayUrl: 'https://other-relay.test' } }],
+    ]
+    for (const [method, args] of calls) {
+      await expect(invoke(viewer, method, args)).rejects.toMatchObject({
+        code: 'remote-access/denied',
+        details: { action: `liveshareShares/${method}` },
+      })
+    }
+    // The refused create and stop left the owner's state and the worker channel untouched.
+    await expect(invoke(owner, 'list', {})).resolves.toEqual({ shares: [] })
+    await expect(invoke(owner, 'relay', {})).resolves.toEqual({
+      override: 'https://relay.test',
+      effective: 'https://relay.test',
+    })
+    expect(worker.sent).toEqual([])
+    if (existsSync(stateFile)) {
+      const persisted = JSON.parse(readFileSync(stateFile, 'utf8')) as { readonly shares?: readonly unknown[] }
+      expect(persisted.shares ?? []).toEqual([])
+    }
+  })
+
+  it('resolves create\u2019s request Session through the Session default resolver', async () => {
+    const { invoke, viewer } = await harness()
+    const decide = vi.spyOn(RemoteAccessService.prototype, 'decide')
+    onTestFinished(() => { decide.mockRestore() })
+    await expect(invoke(viewer, 'create', { request: { sessionId: 'session-1' } })).rejects.toMatchObject({
+      code: 'remote-access/denied',
+      details: { action: 'liveshareShares/create' },
+    })
+    // The call names its Session through the one request object, so the identity the policy reads is
+    // that Session and not the global resource.
+    expect(decide).toHaveBeenCalledOnce()
+    expect(decide.mock.calls[0]?.[0]).toMatchObject({
+      action: 'liveshareShares/create',
+      resources: [{ kind: 'session', id: 'session-1' }],
+      args: { request: { sessionId: 'session-1' } },
+    })
+    expect(worker.sent).toEqual([])
+  })
+
+  it('serves create to the owner Peer without a Gateway resource decision', async () => {
+    const { invoke, owner } = await harness()
+    const decide = vi.spyOn(RemoteAccessService.prototype, 'decide')
+    onTestFinished(() => { decide.mockRestore() })
+    // The owner Peer reaches the operation, whose own credential gate refuses this host; no Gateway
+    // access decision runs for an owner call.
+    await expect(invoke(owner, 'create', { request: { sessionId: 'session-1' } })).rejects.toMatchObject({
+      code: 'liveshareShares/owner-login-required',
+    })
+    expect(decide).not.toHaveBeenCalled()
+    expect(worker.sent).toEqual([])
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-share-remote.spec.ts b/packages/experimental/liveshare/tests/host-share-remote.spec.ts
new file mode 100644
index 0000000000..1046ffeea4
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-share-remote.spec.ts
@@ -0,0 +1,29 @@
+/**
+ * The owner share-management Remote is one delegation surface: every method calls the single
+ * operations implementation that owns the side effect, and the audit read is one of them.
+ *
+ * The Gateway decides each call through remote access before a method runs, so this spec covers the
+ * mapping rather than the policy.
+ */
+
+import { Context } from '@deepseek-ai/cordis'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { LiveshareShares } from '../src/host/share-remote.ts'
+
+let ctx: Context | undefined
+
+afterEach(async () => {
+  await ctx?.fiber.dispose()
+  ctx = undefined
+})
+
+describe('owner share Remote', () => {
+  it('reads one share’s Relay audit trail through the operations implementation', async () => {
+    const audit = vi.fn(async () => ({ events: [] }))
+    ctx = new Context()
+    const remote = new LiveshareShares(ctx, { audit } as never)
+
+    await expect(remote.audit({ shareId: 'share-one' })).resolves.toEqual({ events: [] })
+    expect(audit).toHaveBeenCalledWith({ shareId: 'share-one' })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-share.spec.ts b/packages/experimental/liveshare/tests/host-share.spec.ts
new file mode 100644
index 0000000000..3de17ca055
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-share.spec.ts
@@ -0,0 +1,51 @@
+import { describe, expect, it, vi } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import { apply, type Config } from '../src/host/share-host.ts'
+
+describe('liveshare owner host routes', () => {
+  it('registers body-mode metadata required by the connection Fetch contract', async () => {
+    const paths: string[] = []
+    const register = vi.fn((route: { readonly path: string; readonly requestBody?: string }) => {
+      if (route.requestBody === undefined) throw new Error(`missing request body mode: ${route.path}`)
+      paths.push(route.path)
+      return Promise.resolve(async () => {})
+    })
+    const host = Object.assign(new Context(), {
+      connection: {
+        authenticatedUrl: () => 'http://127.0.0.1:3092/?token=test',
+        fetch: { register },
+      },
+      webServer: { port: 3092 },
+    })
+
+    const config: Config = {}
+    await apply(host, config)
+
+    expect(paths).toEqual([
+      // Share management is the `liveshareShares` Remote; these four are the sign-in and credential
+      // routes the browser still posts to, and nothing else stays same-origin.
+      '/api/liveshare.ownerCredential',
+      '/api/liveshare.ownerLoginStart',
+      '/api/liveshare.ownerLoginRedeem',
+      '/api/liveshare.ownerLoginCancel',
+    ])
+    expect(register).toHaveBeenCalledTimes(4)
+  })
+
+  it('registers no route for the retired per-viewer approval flow', async () => {
+    const paths: string[] = []
+    const host = Object.assign(new Context(), {
+      connection: {
+        authenticatedUrl: () => 'http://127.0.0.1:3092/?token=test',
+        fetch: { register: (route: { readonly path: string }) => { paths.push(route.path); return Promise.resolve(async () => {}) } },
+      },
+      webServer: { port: 3092 },
+    })
+
+    await apply(host, {} satisfies Config)
+
+    for (const gone of ['/api/liveshare.requests', '/api/liveshare.grantView', '/api/liveshare.revokeView']) {
+      expect(paths, gone).not.toContain(gone)
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-viewer-capabilities.spec.ts b/packages/experimental/liveshare/tests/host-viewer-capabilities.spec.ts
new file mode 100644
index 0000000000..76ecd6710a
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-viewer-capabilities.spec.ts
@@ -0,0 +1,292 @@
+/**
+ * The owner's per-share plugin endpoint selection at the Host: the offer list the panel reads, the
+ * write that validates against it, the record the share list echoes back, and the same stored selection
+ * reaching the `share-viewer` policy that decides each viewer call. The last case covers boot order: the
+ * surface exists before the share host's connection, so a plugin that loads first still offers.
+ */
+import { Context } from '@deepseek-ai/cordis'
+import { randomUUID } from 'node:crypto'
+import { mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import RemoteAccessService, { type RemoteAccessAction, type RemoteAccessGrant } from '@deepseek-ai/dsh-api-remote-access'
+import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
+import type { TunnelRegistrationToken, TunnelWorkerEvent } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { apply, type Config } from '../src/host/share-host.ts'
+import type {} from '../src/index.ts'
+import * as Bundle from '../src/index.ts'
+import * as ViewerDeclarationsEntry from '../src/viewer-declarations.ts'
+import { ViewerDeclarations, viewerDeclarationsOf } from '../src/host/viewer-declarations.ts'
+import { shareViewerPrincipal } from '../src/host/viewer-principal.ts'
+import { endpointContribution, mountDeclaringPlugin } from './viewer-endpoint-fixture.ts'
+
+const worker = vi.hoisted(() => ({ event: undefined as ((event: TunnelWorkerEvent) => void) | undefined }))
+vi.mock('../src/host/tunnel-worker.ts', () => ({ TunnelWorker: class {
+  start() {}
+  onEvent(callback: (event: TunnelWorkerEvent) => void) { worker.event = callback; return () => {} }
+  send() {}
+  stop() { worker.event = undefined; return Promise.resolve() }
+} }))
+
+const actor = { providerId: 'fixture', tenantId: 'tenant', subjectId: 'viewer' }
+/**
+ * The mounted plugin's package, which is also the offer's attribution: a declaration is accepted only from the
+ * package that owns the endpoint.
+ */
+const PLUGIN = '@fixture/mek-git'
+const DECLARER = 'mekGit'
+const READABLE = 'mekGit/getGraph'
+const WRITABLE = 'mekGit/commit'
+const GLOBAL = { kind: 'global' } as const
+
+type OwnerRoutes = Map<string, (request: Request) => Promise<Response>>
+
+/**
+ * The connection service an owner host registers its same-origin API routes through.
+ * @param routes - Collects each registered path with its handler.
+ * @returns The minimal `connection` service these cases provide.
+ */
+function connectionService(routes: OwnerRoutes) {
+  return {
+    fetch: {
+      register: (route: { readonly path: string; readonly fetch: (request: Request) => Promise<Response> }) => {
+        routes.set(route.path, route.fetch)
+        return Promise.resolve(async () => {})
+      },
+    },
+  } as never
+}
+
+/** Answer every Relay request this host makes during a case: no owner credential, one admitted share. */
+function stubRelay(): void {
+  vi.stubGlobal('fetch', async (input: RequestInfo | URL, init?: RequestInit) => {
+    const url = new URL(new Request(input, init).url)
+    return url.pathname.endsWith('/owner-credential')
+      ? Response.json({ supported: false })
+      : Response.json({ version: 1, accessMode: 'open', allowedSubjectIds: [identityKeyOf(actor)],
+        sessionMode: 'write', requests: [] })
+  })
+  onTestFinished(() => { vi.unstubAllGlobals() })
+}
+
+/**
+ * One mounted owner host with a single stored share, the plugin that offers the endpoints, and the
+ * Relay's admission for the one viewer these cases act as.
+ * @returns The mounted host and the calls these cases make against it.
+ */
+async function harness() {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-capabilities-'))
+  onTestFinished(() => { rmSync(directory, { recursive: true, force: true }) })
+  const file = join(directory, 'owner.json')
+  writeFileSync(file, JSON.stringify({ instanceId: 'owner', relayUrl: 'https://relay.test', shares: [{
+    relay: 'https://relay.test', shareId: 'share', sessionId: 'source', sessionTitle: 'Source', accessMode: 'open',
+    gatewayToken: 'token', allowedSubjectIds: [identityKeyOf(actor)], createdAt: '2026-10-08T00:00:00Z',
+    sessionMode: 'write', allowsFork: true,
+  }] }))
+  const routes: OwnerRoutes = new Map()
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  ctx.provide('connection', connectionService(routes))
+  await ctx.plugin(TypertRegistry)
+  ctx.typert.register(endpointContribution(PLUGIN, [READABLE, WRITABLE]))
+  await ctx.plugin(RemoteAccessService)
+  stubRelay()
+  const config: Config = { ownerStateFile: file }
+  const stop = await apply(ctx, config)
+  onTestFinished(stop)
+  // The declarations bind to the declaring plugin's own fiber; this fixture mounts the plugin after the
+  // host that provides the surface. The boot-order cases below mount the plugin first.
+  await mountDeclaringPlugin(ctx, DECLARER, PLUGIN, (pluginCtx) => {
+    viewerDeclarationsOf(pluginCtx)?.registerViewerReadable([READABLE])
+    viewerDeclarationsOf(pluginCtx)?.registerViewerWritable([WRITABLE])
+  })
+  // The policy registers once the remote-access service is injected, which settles after this tick.
+  await new Promise((resolve) => { setTimeout(resolve, 0) })
+  worker.event?.({ type: 'share-access-state', registrationToken: randomUUID() as TunnelRegistrationToken,
+    shareId: 'share', version: 1, accessMode: 'open', allowedSubjectIds: [identityKeyOf(actor)], sessionMode: 'write' })
+  // Invalid submissions are what these cases exercise, so the helper hands the operation the raw
+  // value a decoded wire body would carry.
+  const setCapabilities = async (capabilities: unknown, shareId = 'share') =>
+    await ctx.liveshareShares.setCapabilities({ shareId, capabilities } as never)
+  const storedShares = async () => (await ctx.liveshareShares.list()).shares
+  const decide = (action: RemoteAccessAction, resource: { kind: 'global' } = GLOBAL) =>
+    ctx.remoteAccess.decide({ principal: shareViewerPrincipal('share', actor), action, resources: [resource] })
+  /** The grants the policy publishes to this reader right now. */
+  const grants = (): readonly RemoteAccessGrant[] => {
+    const baseline = ctx.remoteAccess.snapshotFor(shareViewerPrincipal('share', actor))
+    return baseline.owner ? [] : baseline.grants
+  }
+  const snapshotted = (action: string): boolean =>
+    grants().some(grant => [...grant.actions].some(granted => granted === action))
+  /** The persisted record for this share, as the owner state file holds it. */
+  const persisted = (): Record<string, unknown> => {
+    const parsed = JSON.parse(readFileSync(file, 'utf8')) as { shares: readonly Record<string, unknown>[] }
+    const share = parsed.shares.find(entry => entry.shareId === 'share')
+    if (share === undefined) throw new Error('share missing from the owner state file')
+    return share
+  }
+  return { ctx, setCapabilities, storedShares, decide, snapshotted, persisted }
+}
+
+describe('owner endpoint selection over the owner API', () => {
+  it('offers what the plugins declare and nothing else', async () => {
+    const host = await harness()
+    expect(host.ctx.liveshareShares.capabilities()).toEqual({
+      capabilities: [{ plugin: PLUGIN, readable: [READABLE], writable: [WRITABLE] }],
+    })
+  })
+
+  it('stores a selection, echoes it, and reaches the reader policy at once', async () => {
+    const host = await harness()
+    const invalidate = vi.spyOn(host.ctx.remoteAccess, 'invalidate')
+    // Nothing is exposed before the owner selects anything, whatever the plugins offer.
+    expect(host.decide(READABLE)).toEqual({ kind: 'deny', reason: 'liveshare/read-only' })
+    expect(host.snapshotted(READABLE)).toBe(false)
+
+    const accepted = await host.setCapabilities([{ plugin: PLUGIN, readable: [READABLE], writable: [] }])
+    expect(accepted).toEqual({ shareId: 'share', viewerCapabilities: [
+      { plugin: PLUGIN, readable: [READABLE], writable: [] },
+    ] })
+    expect(invalidate).toHaveBeenCalledTimes(1)
+    // The policy reads the record and the offers per decision, so the very next call is allowed.
+    expect(host.decide(READABLE)).toEqual({ kind: 'allow' })
+    expect(host.snapshotted(READABLE)).toBe(true)
+    expect(host.persisted().viewerCapabilities).toEqual([{ plugin: PLUGIN, readable: [READABLE], writable: [] }])
+    expect((await host.storedShares())[0]?.viewerCapabilities)
+      .toEqual([{ plugin: PLUGIN, readable: [READABLE], writable: [] }])
+  })
+
+  it('withdraws exposure at once when the owner clears the selection', async () => {
+    const host = await harness()
+    await host.setCapabilities([{ plugin: PLUGIN, readable: [READABLE], writable: [WRITABLE] }])
+    expect(host.decide(READABLE)).toEqual({ kind: 'allow' })
+
+    const cleared = await host.setCapabilities([])
+    expect(cleared.viewerCapabilities).toEqual([])
+    expect(host.decide(READABLE)).toEqual({ kind: 'deny', reason: 'liveshare/read-only' })
+    expect(host.snapshotted(READABLE)).toBe(false)
+    // An empty selection is the record's absent field, which is what an upgraded share reads as none.
+    expect(host.persisted()).not.toHaveProperty('viewerCapabilities')
+    expect((await host.storedShares())[0]?.viewerCapabilities).toEqual([])
+  })
+
+  it('exposes a writable endpoint only where the share already allows writing', async () => {
+    const host = await harness()
+    await host.setCapabilities([{ plugin: PLUGIN, readable: [], writable: [WRITABLE] }])
+    // The share allows writing but has no confined source layer here, so the policy refuses the write
+    // with the same code its own write role uses rather than treating the selection as permission.
+    expect(host.decide(WRITABLE)).toEqual({ kind: 'deny', reason: 'source-write-unavailable' })
+    expect(host.snapshotted(WRITABLE)).toBe(false)
+  })
+
+  it('refuses an endpoint the plugin does not currently offer, naming it', async () => {
+    const host = await harness()
+    await expect(host.setCapabilities([{ plugin: PLUGIN, readable: ['mekGit/unknown'], writable: [] }]))
+      .rejects.toMatchObject({
+        code: 'liveshareShares/endpoint-not-offered',
+        details: { plugin: PLUGIN, kind: 'readable', endpoint: 'mekGit/unknown' },
+      })
+    expect(host.decide(READABLE)).toEqual({ kind: 'deny', reason: 'liveshare/read-only' })
+    expect(host.persisted()).not.toHaveProperty('viewerCapabilities')
+  })
+
+  it('refuses the other kind of the same endpoint, naming the kind it was submitted as', async () => {
+    const host = await harness()
+    await expect(host.setCapabilities([{ plugin: PLUGIN, readable: [WRITABLE], writable: [] }]))
+      .rejects.toMatchObject({
+        code: 'liveshareShares/endpoint-not-offered',
+        details: { plugin: PLUGIN, kind: 'readable', endpoint: WRITABLE },
+      })
+    await expect(host.setCapabilities([{ plugin: PLUGIN, readable: [], writable: [READABLE] }]))
+      .rejects.toMatchObject({
+        code: 'liveshareShares/endpoint-not-offered',
+        details: { plugin: PLUGIN, kind: 'writable', endpoint: READABLE },
+      })
+  })
+
+  it('refuses a plugin the live offers do not name', async () => {
+    const host = await harness()
+    await expect(host.setCapabilities([{ plugin: 'ghost', readable: [READABLE], writable: [] }]))
+      .rejects.toMatchObject({ code: 'liveshareShares/unknown-plugin', details: { plugin: 'ghost' } })
+  })
+
+  it.each([
+    ['a value that is not an array', 'mekGit'],
+    ['an entry that is not an object', ['mekGit']],
+    ['a missing readable list', [{ plugin: PLUGIN, writable: [] }]],
+    ['a non-string endpoint', [{ plugin: PLUGIN, readable: [7], writable: [] }]],
+  ])('refuses %s without writing anything', async (_label, capabilities) => {
+    const host = await harness()
+    await expect(host.setCapabilities(capabilities))
+      .rejects.toMatchObject({ code: 'liveshareShares/invalid-capabilities' })
+    expect(host.persisted()).not.toHaveProperty('viewerCapabilities')
+  })
+
+  it('keeps the previous selection when a later submission is refused', async () => {
+    const host = await harness()
+    await host.setCapabilities([{ plugin: PLUGIN, readable: [READABLE], writable: [] }])
+    await expect(host.setCapabilities([{ plugin: PLUGIN, readable: [READABLE, 'mekGit/unknown'], writable: [] }]))
+      .rejects.toMatchObject({ code: 'liveshareShares/endpoint-not-offered' })
+    expect(host.decide(READABLE)).toEqual({ kind: 'allow' })
+    expect(host.persisted().viewerCapabilities).toEqual([{ plugin: PLUGIN, readable: [READABLE], writable: [] }])
+  })
+
+  it('refuses a share this host does not hold, and a request that names none', async () => {
+    const host = await harness()
+    await expect(host.setCapabilities([], 'missing'))
+      .rejects.toMatchObject({ code: 'liveshareShares/share-not-found' })
+    await expect(host.setCapabilities([]))
+      .resolves.toEqual({ shareId: 'share', viewerCapabilities: [] })
+    await expect(host.ctx.liveshareShares.setCapabilities({ shareId: '', capabilities: [] }))
+      .rejects.toMatchObject({ code: 'liveshareShares/missing-share-id' })
+  })
+})
+
+describe('viewer capability offers at boot', () => {
+  it('offers what a plugin declares when it loads before the surface and before the share host', async () => {
+    const directory = mkdtempSync(join(tmpdir(), 'liveshare-boot-'))
+    onTestFinished(() => { rmSync(directory, { recursive: true, force: true }) })
+    const file = join(directory, 'owner.json')
+    writeFileSync(file, JSON.stringify({ instanceId: 'owner', shares: [] }))
+    const routes: OwnerRoutes = new Map()
+    const ctx = new Context()
+    onTestFinished(() => ctx.fiber.dispose())
+    await ctx.plugin(TypertRegistry)
+    ctx.typert.register(endpointContribution(PLUGIN, [READABLE, WRITABLE]))
+    await ctx.plugin(RemoteAccessService)
+    stubRelay()
+    // The declaring plugin's own dependencies are already satisfied at boot, which is what lets it
+    // apply before the share host's `connection` arrives.
+    ctx.provide('llm', {} as never)
+
+    // The declaring plugin mounts first, exactly as a profile whose bundle order puts it before the
+    // liveshare bundle does, and it registers only once the surface exists.
+    const plugin = mountDeclaringPlugin(ctx, DECLARER, PLUGIN, (pluginCtx) => {
+      pluginCtx.inject(['liveshareViewerDeclarations'], (scope) => {
+        viewerDeclarationsOf(scope)?.registerViewerReadable([READABLE])
+        viewerDeclarationsOf(scope)?.registerViewerWritable([WRITABLE])
+      })
+    }, ['llm'])
+    // The bundle's declaration entry needs nothing and provides the surface in its own load phase; the
+    // share host entry next to it waits for `connection`.
+    const provision = ctx.plugin(ViewerDeclarationsEntry)
+    const host = ctx.plugin(Bundle, { ownerStateFile: file })
+    await Promise.all([plugin, provision, host])
+    await new Promise((resolve) => { setTimeout(resolve, 0) })
+
+    // The surface exists while the share host's fiber is still pending on `connection`, and the offer
+    // registered through it is already counted.
+    expect(viewerDeclarationsOf(ctx)).toBeInstanceOf(ViewerDeclarations)
+    expect(viewerDeclarationsOf(ctx)?.declaredCapabilities())
+      .toEqual([{ plugin: PLUGIN, readable: [READABLE], writable: [WRITABLE] }])
+
+    // The share host settles on its own schedule and serves the same offers through the owner API.
+    ctx.provide('connection', connectionService(routes))
+    await new Promise((resolve) => { setTimeout(resolve, 0) })
+    expect(ctx.liveshareShares.capabilities()).toEqual({
+      capabilities: [{ plugin: PLUGIN, readable: [READABLE], writable: [WRITABLE] }],
+    })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/host-viewer-principal.spec.ts b/packages/experimental/liveshare/tests/host-viewer-principal.spec.ts
new file mode 100644
index 0000000000..dbd0ce291c
--- /dev/null
+++ b/packages/experimental/liveshare/tests/host-viewer-principal.spec.ts
@@ -0,0 +1,46 @@
+/** One share reader's principal: the Relay-asserted identity and display name, and how two readers compare. */
+
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { describe, expect, it } from 'vitest'
+import {
+  isShareViewer, shareViewerOf, shareViewerPrincipal,
+} from '../src/host/viewer-principal.ts'
+
+const actor = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_reader' }
+const principal = shareViewerPrincipal('share-one', actor)
+
+describe('share viewer principal', () => {
+  it('names a reader by the share, identity triple, and recorded display name', () => {
+    expect(principal).toEqual({ kind: 'share-viewer', shareId: 'share-one', actor })
+    // The display name is attribution data; credential and avatar fields never reach the principal.
+    const withDisplay: ShareRpcActor & {
+      readonly displayName: string
+      readonly avatarUrl: string
+      readonly credential: string
+    } = {
+      ...actor, displayName: 'Reader', avatarUrl: 'https://example.test/avatar.png', credential: 'signed',
+    }
+    expect(shareViewerPrincipal('share-one', withDisplay)).toEqual({
+      kind: 'share-viewer',
+      shareId: 'share-one',
+      actor: { ...actor, displayName: 'Reader' },
+    })
+  })
+
+  it('omits the display name when the Relay reported none', () => {
+    expect(shareViewerPrincipal('share-one', actor)).toEqual({ kind: 'share-viewer', shareId: 'share-one', actor })
+  })
+
+  it('reads the reader out of a share-viewer principal and nothing out of another kind', () => {
+    expect(shareViewerOf(principal)).toBe(principal)
+    expect(shareViewerOf({ kind: 'owner' })).toBeUndefined()
+  })
+
+  it('compares readers by share and whole identity key', () => {
+    expect(isShareViewer(principal, 'share-one', actor)).toBe(true)
+    expect(isShareViewer(principal, 'share-two', actor)).toBe(false)
+    // The same subject id issued by another provider or tenant is another reader.
+    expect(isShareViewer(principal, 'share-one', { ...actor, providerId: 'other' })).toBe(false)
+    expect(isShareViewer(principal, 'share-one', { ...actor, tenantId: 'tenant-b' })).toBe(false)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/manage-shares.client.spec.tsx b/packages/experimental/liveshare/tests/manage-shares.client.spec.tsx
new file mode 100644
index 0000000000..dcfee0949a
--- /dev/null
+++ b/packages/experimental/liveshare/tests/manage-shares.client.spec.tsx
@@ -0,0 +1,178 @@
+// @vitest-environment jsdom
+/** The global share list: a Session title, its online state, and the button that opens its share dialog. */
+
+import { act, cleanup, fireEvent, render, screen, within } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import type {} from '../src/client/index.ts'
+import { LiveshareManageSharesDialog, type LiveshareManageSharesDialogProps } from '../src/client/ManageSharesDialog.tsx'
+import { en } from '../src/client/locales.ts'
+import type { OwnerShareList } from '../src/share-api-types.ts'
+import type { RemoteResult } from '@deepseek-ai/dsh-typert-protocol'
+import { accepted, ownerSharesDouble, refused, requestOf } from './owner-shares-double.client.ts'
+
+afterEach(cleanup)
+
+const translate: LiveshareManageSharesDialogProps['t'] = (key, params) => {
+  let result = (en as Readonly<Record<string, string>>)[key] ?? key
+  for (const [name, value] of Object.entries(params ?? {})) result = result.replace(`{${name}}`, String(value))
+  return result
+}
+
+const ROWS = [
+  {
+    shareId: 'one', sessionId: 'session-one', sessionTitle: 'First session', link: 'https://relay.test/?shareId=one',
+    createdAt: '2026-09-05T00:00:00Z', online: true,
+  },
+  {
+    shareId: 'two', sessionId: 'session-two', sessionTitle: 'Second session', link: 'https://relay.test/?shareId=two',
+    createdAt: '2026-09-05T00:00:00Z', online: false,
+  },
+]
+
+/** Mount the manager with one scripted list answer. */
+async function showManager(
+  answer: () => Promise<RemoteResult<OwnerShareList>>,
+  onOpenShare?: (sessionId: string, sessionTitle: string) => void,
+  onClose = (): void => {},
+  overrides: Parameters<typeof ownerSharesDouble>[0] = {},
+) {
+  const host = ownerSharesDouble({ list: answer, ...overrides })
+  await act(async () => {
+    render(<LiveshareManageSharesDialog
+      shares={host.shares}
+      {...(onOpenShare === undefined ? {} : { onOpenShare })}
+      onClose={onClose}
+      t={translate}
+    />)
+  })
+  return host
+}
+
+describe('Liveshare global share manager', () => {
+  it('shows only each Session title and opens that Session share dialog', async () => {
+    const opened: string[] = []
+    await showManager(async () => accepted({ shares: ROWS as never }), (sessionId, title) => { opened.push(`${sessionId}:${title}`) })
+    expect(screen.getByText('First session')).toBeDefined()
+    expect(screen.getByText('Second session')).toBeDefined()
+    expect(screen.getByText('Online')).toBeDefined()
+    expect(screen.getByText('Offline')).toBeDefined()
+    expect(screen.queryByRole('tablist')).toBeNull()
+    expect(screen.queryByRole('switch')).toBeNull()
+    const opens = screen.getAllByRole('button', { name: 'Manage' })
+    expect(opens).toHaveLength(2)
+    await act(async () => { fireEvent.click(opens[0]!) })
+    expect(opened).toEqual(['session-one:First session'])
+  })
+
+  it('stops one share from its own row after the owner acknowledges the link loss', async () => {
+    const host = await showManager(async () => accepted({ shares: ROWS as never }), undefined, () => {}, {
+      stop: async () => accepted({ ok: true }),
+    })
+    await act(async () => {
+      fireEvent.click(screen.getAllByRole('button', { name: en['manage.cancelShare'] })[0]!)
+    })
+    const confirm = screen.getByRole('dialog', { name: en['manage.stop.title'] })
+    await act(async () => {
+      fireEvent.click(within(confirm).getByRole('checkbox', { name: en['manage.stop.acknowledge'] }))
+    })
+    await act(async () => {
+      fireEvent.click(within(confirm).getByRole('button', { name: en['dialog.stop'] }))
+    })
+    expect(requestOf(host.calls, 'stop')).toEqual({ shareId: 'one' })
+    expect(screen.queryByText('First session')).toBeNull()
+    expect(screen.getByText('Second session')).toBeDefined()
+  })
+
+  it('states a refused cancellation and keeps the share listed', async () => {
+    await showManager(async () => accepted({ shares: ROWS as never }), undefined, () => {}, {
+      stop: async () => refused('gateway/internal', {}),
+    })
+    await act(async () => {
+      fireEvent.click(screen.getAllByRole('button', { name: en['manage.cancelShare'] })[0]!)
+    })
+    const confirm = screen.getByRole('dialog', { name: en['manage.stop.title'] })
+    await act(async () => {
+      fireEvent.click(within(confirm).getByRole('checkbox', { name: en['manage.stop.acknowledge'] }))
+    })
+    await act(async () => {
+      fireEvent.click(within(confirm).getByRole('button', { name: en['dialog.stop'] }))
+    })
+    expect(screen.getByRole('alert').textContent).toBe(en['dialog.stopFailed'])
+    expect(screen.getByText('First session')).toBeDefined()
+  })
+
+  it('cancels the stop confirmation without stopping the share', async () => {
+    await showManager(async () => accepted({ shares: ROWS as never }))
+    await act(async () => {
+      fireEvent.click(screen.getAllByRole('button', { name: en['manage.cancelShare'] })[0]!)
+    })
+    const confirm = screen.getByRole('dialog', { name: en['manage.stop.title'] })
+    await act(async () => {
+      fireEvent.click(within(confirm).getByRole('button', { name: en['dialog.cancel'] }))
+    })
+    expect(screen.queryByRole('dialog', { name: en['manage.stop.title'] })).toBeNull()
+    expect(screen.getByText('First session')).toBeDefined()
+  })
+
+  it('disables the manage action when the host page cannot navigate', async () => {
+    await showManager(async () => accepted({ shares: ROWS as never }))
+    for (const button of screen.getAllByRole('button', { name: 'Manage' })) {
+      expect(button).toHaveProperty('disabled', true)
+    }
+  })
+
+  it('ignores a list answer that arrives after the manager closed', async () => {
+    const pending = Promise.withResolvers<RemoteResult<OwnerShareList>>()
+    const host = ownerSharesDouble({ list: () => pending.promise })
+    const view = render(<LiveshareManageSharesDialog shares={host.shares} onClose={() => {}} t={translate} />)
+    view.unmount()
+    await act(async () => {
+      pending.resolve(accepted({ shares: ROWS as never }))
+      await new Promise(resolve => setTimeout(resolve, 0))
+    })
+    expect(screen.queryByText('First session')).toBeNull()
+  })
+
+  it('ignores a list failure that arrives after the manager closed', async () => {
+    const pending = Promise.withResolvers<RemoteResult<OwnerShareList>>()
+    const host = ownerSharesDouble({ list: () => pending.promise })
+    const view = render(<LiveshareManageSharesDialog shares={host.shares} onClose={() => {}} t={translate} />)
+    view.unmount()
+    await act(async () => {
+      pending.resolve(refused('gateway/internal', {}))
+      await new Promise(resolve => setTimeout(resolve, 0))
+    })
+    expect(screen.queryByRole('alert')).toBeNull()
+  })
+
+  it('ignores a direct list rejection after the manager closed', async () => {
+    const pending = Promise.withResolvers<RemoteResult<OwnerShareList>>()
+    const host = ownerSharesDouble({ list: () => pending.promise })
+    const view = render(<LiveshareManageSharesDialog shares={host.shares} onClose={() => {}} t={translate} />)
+    view.unmount()
+    await act(async () => {
+      pending.reject(new Error('gateway lost'))
+      await new Promise(resolve => setTimeout(resolve, 0))
+    })
+    expect(screen.queryByRole('alert')).toBeNull()
+  })
+
+  it('states loading, empty, and refused lists', async () => {
+    const pending = Promise.withResolvers<RemoteResult<OwnerShareList>>()
+    await showManager(() => pending.promise)
+    expect(screen.getByText(en['manage.loading'])).toBeDefined()
+    await act(async () => { pending.resolve(accepted({ shares: [] })) })
+    expect(screen.getByText(en['manage.empty'])).toBeDefined()
+    cleanup()
+
+    await showManager(async () => refused('gateway/internal', {}))
+    expect(screen.getByRole('alert').textContent).toBe(en['manage.unavailable'])
+  })
+
+  it('closes from its Done control', async () => {
+    const onClose = vi.fn()
+    await showManager(async () => accepted({ shares: [] }), undefined, onClose)
+    await act(async () => { fireEvent.click(screen.getAllByRole('button', { name: en['manage.done'] })[0]!) })
+    expect(onClose).toHaveBeenCalledTimes(1)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/newworker-correlation.spec.ts b/packages/experimental/liveshare/tests/newworker-correlation.spec.ts
new file mode 100644
index 0000000000..d39921b13a
--- /dev/null
+++ b/packages/experimental/liveshare/tests/newworker-correlation.spec.ts
@@ -0,0 +1,217 @@
+/** Real gateway IPC and loopback WS barriers pin request identity across Relay id reuse. */
+
+import { randomUUID } from 'node:crypto'
+import { spawn } from 'node:child_process'
+import { once } from 'node:events'
+import { fileURLToPath } from 'node:url'
+import { WebSocket, WebSocketServer } from 'ws'
+import { describe, expect, it } from 'vitest'
+import {
+  parseGatewayFrame,
+  parseTunnelWorkerEvent,
+  rawText,
+  type ShareRpcResFrame,
+  type TunnelShareSpec,
+  type TunnelRegistrationToken,
+  type TunnelWorkerCommand,
+  type TunnelWorkerEvent,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+
+type RequestEvent = Extract<TunnelWorkerEvent, { type: 'share-rpc-request' }>
+
+async function harness() {
+  const server = new WebSocketServer({ host: '127.0.0.1', port: 0 })
+  const sockets: WebSocket[] = []
+  const wireFrames: Record<string, unknown>[] = []
+  const replies = new Map<WebSocket, ShareRpcResFrame[]>()
+  server.on('connection', (socket) => {
+    sockets.push(socket)
+    replies.set(socket, [])
+    socket.on('message', (data) => {
+      wireFrames.push(JSON.parse(rawText(data)) as Record<string, unknown>)
+      const frame = parseGatewayFrame(rawText(data))
+      if (frame?.type === 'share-rpc-res') replies.get(socket)?.push(frame)
+    })
+  })
+  await once(server, 'listening')
+  const address = server.address()
+  if (address === null || typeof address === 'string') throw new Error('Relay fixture did not bind a TCP port')
+  const child = spawn(process.execPath, [
+    '--import', 'tsx/esm', fileURLToPath(new URL('../src/owner-gateway/cli.ts', import.meta.url)),
+  ], { stdio: ['ignore', 'pipe', 'pipe', 'ipc'] })
+  child.stdout?.resume()
+  let diagnostics = ''
+  child.stderr?.on('data', (data: Buffer) => { diagnostics += data.toString() })
+  const exited = once(child, 'exit')
+  const events: TunnelWorkerEvent[] = []
+  child.on('message', (value) => {
+    const event = parseTunnelWorkerEvent(value)
+    if (event !== undefined) events.push(event)
+  })
+  const send = (command: TunnelWorkerCommand) => { child.send(command) }
+  const share = (shareId = 'share'): TunnelShareSpec => ({
+    shareId, sessionId: 'session', sessionTitle: 'session', accessMode: 'open',
+    relay: `http://127.0.0.1:${String(address.port)}`, gatewayToken: 'token',
+    ownerDisplayName: 'owner', allowedSubjectIds: [],
+  })
+  const request = async (socket: WebSocket, subjectId: string, id = 1): Promise<RequestEvent> => {
+    const before = events.length
+    socket.send(JSON.stringify({
+      type: 'share-rpc', id, body: { op: 'stream-read', subject: subjectId },
+      actor: { providerId: 'mock', tenantId: 'tenant', subjectId },
+    }))
+    await expect.poll(() => events.slice(before).some(event => event.type === 'share-rpc-request' && event.actor.subjectId === subjectId)).toBe(true)
+    const event = events.slice(before).find(event => event.type === 'share-rpc-request' && event.actor.subjectId === subjectId)
+    if (event?.type !== 'share-rpc-request') throw new Error('Gateway did not report a request')
+    return event
+  }
+  const respond = (event: RequestEvent, body: unknown): void => { send({
+    type: 'share-rpc-response', registrationToken: event.registrationToken, token: event.token, shareId: event.shareId, id: event.id, status: 200, body,
+  }) }
+  // IPC command order and WS send order make this response an observation barrier for prior answers.
+  const barrier = async (socket: WebSocket) => {
+    const marker = await request(socket, 'barrier', 999)
+    respond(marker, 'barrier')
+    await expect.poll(() => replies.get(socket)?.some(frame => frame.id === 999)).toBe(true)
+  }
+  const connect = async (shareId = 'share') => {
+    const count = sockets.length
+    send({ type: 'add-share', registrationToken: randomUUID() as TunnelRegistrationToken, share: share(shareId) })
+    await expect.poll(() => sockets.length).toBe(count + 1)
+    return sockets[count]!
+  }
+  const cancelled = async (event: RequestEvent) => {
+    await expect.poll(() => events.some(item => item.type === 'share-rpc-cancel' && item.token === event.token)).toBe(true)
+  }
+  const close = async () => {
+    if (child.exitCode === null && child.signalCode === null) child.kill('SIGTERM')
+    await exited
+    for (const socket of sockets) socket.terminate()
+    await new Promise<void>((resolve, reject) => { server.close((error) => { if (error === undefined) resolve(); else reject(error) }) })
+  }
+  try {
+    await expect.poll(() => {
+      if (child.exitCode !== null || child.signalCode !== null) throw new Error(`Gateway exited: ${diagnostics}`)
+      return events.some(event => event.type === 'ready')
+    }, { timeout: 20_000 }).toBe(true)
+  } catch (error) {
+    await close()
+    throw error
+  }
+  return { sockets, wireFrames, replies, events, send, request, respond, barrier, connect, cancelled, close }
+}
+
+describe('Gateway request correlation', () => {
+  it('drops Alice’s late response after reconnect gives Bob the same Relay id', async () => {
+    const h = await harness()
+    try {
+      const oldSocket = await h.connect()
+      const alice = await h.request(oldSocket, 'alice')
+      const closed = once(oldSocket, 'close')
+      oldSocket.close()
+      await closed
+      await h.cancelled(alice)
+      await expect.poll(() => h.sockets.length).toBe(2)
+      const newSocket = h.sockets[1]!
+      const bob = await h.request(newSocket, 'bob')
+      expect(bob.token).not.toBe(alice.token)
+      expect(bob.id).toBe(alice.id)
+      expect(bob.registrationToken).toBe(alice.registrationToken)
+      expect(bob.token).not.toBe(bob.registrationToken)
+      h.respond(alice, 'alice-secret')
+      await h.barrier(newSocket)
+      expect(h.replies.get(newSocket)?.filter(frame => frame.id === 1)).toEqual([])
+      h.respond(bob, 'bob-answer')
+      await expect.poll(() => h.replies.get(newSocket)?.find(frame => frame.id === 1)?.body).toBe('bob-answer')
+    } finally {
+      await h.close()
+    }
+  })
+
+  it('propagates Relay cancel and isolates id reuse on the same socket', async () => {
+    const h = await harness()
+    try {
+      const socket = await h.connect()
+      const alice = await h.request(socket, 'alice')
+      socket.send(JSON.stringify({ type: 'share-rpc-cancel', id: alice.id }))
+      await h.cancelled(alice)
+      const bob = await h.request(socket, 'bob')
+      h.respond(alice, 'alice-secret')
+      await h.barrier(socket)
+      expect(h.replies.get(socket)?.filter(frame => frame.id === 1)).toEqual([])
+      h.respond(bob, 'bob-answer')
+      await expect.poll(() => h.replies.get(socket)?.find(frame => frame.id === 1)?.body).toBe('bob-answer')
+    } finally {
+      await h.close()
+    }
+  })
+
+  it('cancels removed-share work without touching an equal id on another share', async () => {
+    const h = await harness()
+    try {
+      const first = await h.connect('share-a')
+      const second = await h.connect('share-b')
+      const alice = await h.request(first, 'alice')
+      const bob = await h.request(second, 'bob')
+      h.send({ type: 'remove-share', shareId: 'share-a' })
+      await h.cancelled(alice)
+      const replacement = await h.connect('share-a')
+      const carol = await h.request(replacement, 'carol')
+      expect(carol.registrationToken).not.toBe(alice.registrationToken)
+      expect(h.events.find(event => event.type === 'share-rpc-cancel' && event.token === alice.token))
+        .toMatchObject({ registrationToken: alice.registrationToken, shareId: alice.shareId })
+      h.respond(alice, 'alice-secret')
+      h.respond(bob, 'bob-answer')
+      await h.barrier(replacement)
+      expect(h.events.some(event => event.type === 'share-rpc-cancel' && event.token === bob.token)).toBe(false)
+      expect(h.replies.get(replacement)?.filter(frame => frame.id === 1)).toEqual([])
+      await expect.poll(() => h.replies.get(second)?.find(frame => frame.id === 1)?.body).toBe('bob-answer')
+      h.respond(carol, 'carol-answer')
+      await expect.poll(() => h.replies.get(replacement)?.find(frame => frame.id === 1)?.body).toBe('carol-answer')
+    } finally {
+      await h.close()
+    }
+  })
+
+  it('drops a prior worker process response when its replacement receives the same share and id', async () => {
+    const old = await harness()
+    let alice: RequestEvent
+    try {
+      alice = await old.request(await old.connect(), 'alice')
+    } finally {
+      await old.close()
+    }
+    const replacement = await harness()
+    try {
+      const socket = await replacement.connect()
+      const bob = await replacement.request(socket, 'bob')
+      expect(bob.token).not.toBe(alice.token)
+      replacement.respond(alice, 'alice-secret')
+      await replacement.barrier(socket)
+      expect(replacement.replies.get(socket)?.filter(frame => frame.id === 1)).toEqual([])
+      replacement.respond(bob, 'bob-answer')
+      await expect.poll(() => replacement.replies.get(socket)?.find(frame => frame.id === 1)?.body).toBe('bob-answer')
+    } finally {
+      await replacement.close()
+    }
+  })
+
+  it('requires matching token, share, and id without consuming the legitimate response', async () => {
+    const h = await harness()
+    try {
+      const socket = await h.connect()
+      const alice = await h.request(socket, 'alice')
+      h.send({ type: 'share-rpc-response', registrationToken: alice.registrationToken, token: alice.token, shareId: 'other', id: alice.id, status: 200, body: 'wrong-share' })
+      h.send({ type: 'share-rpc-response', registrationToken: alice.registrationToken, token: alice.token, shareId: alice.shareId, id: 2, status: 200, body: 'wrong-id' })
+      h.send({ type: 'share-rpc-response', registrationToken: randomUUID() as TunnelRegistrationToken,
+        token: alice.token, shareId: alice.shareId, id: alice.id, status: 200, body: 'wrong-registration' })
+      await h.barrier(socket)
+      expect(h.replies.get(socket)?.filter(frame => frame.id !== 999)).toEqual([])
+      expect(h.wireFrames.every(frame => !('registrationToken' in frame) && !('token' in frame))).toBe(true)
+      h.respond(alice, 'alice-answer')
+      await expect.poll(() => h.replies.get(socket)?.find(frame => frame.id === 1)?.body).toBe('alice-answer')
+    } finally {
+      await h.close()
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/owner-credential-horizon.host.spec.ts b/packages/experimental/liveshare/tests/owner-credential-horizon.host.spec.ts
new file mode 100644
index 0000000000..754ae962af
--- /dev/null
+++ b/packages/experimental/liveshare/tests/owner-credential-horizon.host.spec.ts
@@ -0,0 +1,212 @@
+/**
+ * The owner host follows the Relay's live horizon for its published credential.
+ *
+ * A credential carries the expiry the Relay signed into it. The login behind that credential can be
+ * renewed past that instant, and the owner host is the only party that cannot tell on its own, so a
+ * Relay answer carrying the horizon that applies is what keeps the status page and the publish path
+ * from reporting a usable credential as expired. An answer without one changes nothing.
+ */
+
+import { createServer } from 'node:http'
+import type { AddressInfo } from 'node:net'
+import { mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { Context } from '@deepseek-ai/cordis'
+import { describe, expect, it, onTestFinished } from 'vitest'
+import type {} from '../src/index.ts'
+import { apply } from '../src/host/share-host.ts'
+
+const START = Date.parse('2026-10-15T00:00:00.000Z')
+const PAST = new Date(START).toISOString()
+const LIVE = new Date(START + 30 * 24 * 60 * 60_000).toISOString()
+const STORED_TOKEN = 'stored-payload.stored-signature'
+
+/**
+ * Read the horizon a stored owner credential file records.
+ * @param file - Credential file the fixture wrote.
+ * @returns The `expiresAt` the file carries, or undefined when it names none.
+ */
+function storedHorizon(file: string): unknown {
+  return (JSON.parse(readFileSync(file, 'utf8')) as { expiresAt?: unknown }).expiresAt
+}
+
+/** One route's fixed answer: a status to refuse with, or a JSON body to answer with. */
+type Answer = { readonly status: number } | { readonly body: Record<string, unknown> }
+
+interface RelayStandIn {
+  readonly relayUrl: string
+  readonly claims: Array<{ readonly url: URL; readonly credential: string | undefined }>
+  readonly close: () => Promise<void>
+}
+
+function answer(res: import('node:http').ServerResponse, reply: Answer): void {
+  if ('status' in reply) {
+    res.writeHead(reply.status, { 'content-type': 'application/json' })
+    res.end('{"error":"owner-credential-required"}')
+    return
+  }
+  res.writeHead(200, { 'content-type': 'application/json' })
+  res.end(JSON.stringify(reply.body))
+}
+
+/**
+ * Start a Relay stand-in answering one share's claim and the capability probe.
+ * @param options Claim answer, and probe answer when it differs from a plain support report.
+ * @returns Fixture origin, recorded claims, and its disposer.
+ */
+async function relayStandIn(options: {
+  readonly claim: Answer
+  readonly probe?: Answer
+}): Promise<RelayStandIn> {
+  const claims: RelayStandIn['claims'] = []
+  const server = createServer((req, res) => {
+    if (req.url?.startsWith('/__liveshare/share/claim') === true) {
+      claims.push({
+        url: new URL(req.url, 'http://relay.local'),
+        credential: req.headers['x-liveshare-owner-credential'] as string | undefined,
+      })
+      answer(res, options.claim)
+      return
+    }
+    if (req.url?.startsWith('/__liveshare/owner-credential') === true) {
+      answer(res, options.probe ?? { body: { supported: true } })
+      return
+    }
+    res.writeHead(404, { 'content-type': 'application/json' })
+    res.end('{"error":"not-found"}')
+  })
+  await new Promise<void>((resolve) => { server.listen(0, '127.0.0.1', resolve) })
+  const { port } = server.address() as AddressInfo
+  return {
+    relayUrl: `http://127.0.0.1:${String(port)}`,
+    claims,
+    close: async () => { await new Promise<void>((resolve) => { server.close(() => { resolve() }) }) },
+  }
+}
+
+interface HostFixture {
+  readonly ownerCredentialFile: string
+  readonly identity: () => Promise<{ readonly state: string; readonly expiresAt?: string }>
+  readonly stop: () => Promise<void>
+}
+
+async function host(options: {
+  readonly relayUrl: string
+  readonly expiresAt: string
+  readonly shares: boolean
+}): Promise<HostFixture> {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-owner-horizon-'))
+  onTestFinished(() => { rmSync(directory, { recursive: true, force: true }) })
+  const ownerStateFile = join(directory, 'owner-shares.json')
+  const ownerCredentialFile = join(directory, 'owner-credential.json')
+  writeFileSync(ownerStateFile, JSON.stringify({
+    instanceId: 'instance-1',
+    relayUrl: options.relayUrl,
+    shares: options.shares
+      ? [{
+        shareId: 'share-1',
+        relay: options.relayUrl,
+        sessionId: 'session',
+        sessionTitle: 'Session',
+        accessMode: 'open',
+        gatewayToken: 'claim-token',
+        allowedSubjectIds: [],
+        createdAt: '2026-10-08T00:00:00Z',
+        sessionMode: 'view',
+      }]
+      : [],
+  }))
+  writeFileSync(ownerCredentialFile, JSON.stringify({
+    relay: options.relayUrl,
+    credential: STORED_TOKEN,
+    expiresAt: options.expiresAt,
+    subjectId: 'owner',
+  }, null, 2))
+  const ctx = new Context()
+  const routes = new Map<string, (request: Request) => Promise<Response>>()
+  Object.assign(ctx, {
+    connection: {
+      fetch: {
+        register: (route: { readonly path: string; readonly fetch: (request: Request) => Promise<Response> }) => {
+          routes.set(route.path, route.fetch)
+          return async () => { routes.delete(route.path) }
+        },
+      },
+    },
+  })
+  const stop = await apply(ctx, { ownerStateFile, ownerCredentialFile })
+  onTestFinished(async () => { await stop(); await ctx.fiber.dispose() })
+  return {
+    ownerCredentialFile,
+    identity: async () => {
+      const status = await ctx.liveshareShares.identity({})
+      return status
+    },
+    stop,
+  }
+}
+
+describe('owner host credential horizon', () => {
+  it('adopts the horizon the Relay reports for a claim past the signed expiry', async () => {
+    const relay = await relayStandIn({ claim: { body: { claimed: true, ownerCredentialExpiresAt: LIVE } } })
+    onTestFinished(relay.close)
+    const fixture = await host({ relayUrl: relay.relayUrl, expiresAt: PAST, shares: true })
+
+    await expect.poll(async () => (await fixture.identity()).state).toBe('verified')
+    expect(await fixture.identity()).toMatchObject({ state: 'verified', expiresAt: LIVE })
+    // The host presented the token it held even though its own expiry read had passed: the Relay is
+    // the only party that can say whether the login behind it is still renewed.
+    expect(relay.claims[0]?.credential).toBe(STORED_TOKEN)
+    expect(JSON.parse(readFileSync(fixture.ownerCredentialFile, 'utf8'))).toEqual({
+      relay: relay.relayUrl,
+      credential: STORED_TOKEN,
+      expiresAt: LIVE,
+      subjectId: 'owner',
+    })
+  })
+
+  it('adopts the horizon the capability probe reports when no share reaches a claim', async () => {
+    const relay = await relayStandIn({
+      claim: { body: { claimed: true } },
+      probe: { body: { supported: true, ownerCredentialExpiresAt: LIVE } },
+    })
+    onTestFinished(relay.close)
+    const fixture = await host({ relayUrl: relay.relayUrl, expiresAt: PAST, shares: false })
+
+    await expect.poll(async () => (await fixture.identity()).state).toBe('verified')
+    expect(relay.claims).toEqual([])
+    expect(storedHorizon(fixture.ownerCredentialFile)).toBe(LIVE)
+  })
+
+  it('leaves the signed expiry in place when the Relay reports no horizon', async () => {
+    const relay = await relayStandIn({ claim: { body: { claimed: true } } })
+    onTestFinished(relay.close)
+    const fixture = await host({ relayUrl: relay.relayUrl, expiresAt: PAST, shares: true })
+    await expect.poll(() => relay.claims.length).toBe(1)
+    await fixture.stop()
+
+    expect(await fixture.identity()).toMatchObject({ state: 'expired', expiresAt: PAST })
+    expect(storedHorizon(fixture.ownerCredentialFile)).toBe(PAST)
+  })
+
+  it('keeps a credential the Relay refuses expired', async () => {
+    const relay = await relayStandIn({ claim: { status: 401 } })
+    onTestFinished(relay.close)
+    const fixture = await host({ relayUrl: relay.relayUrl, expiresAt: PAST, shares: true })
+    await expect.poll(() => relay.claims.length).toBe(1)
+    await fixture.stop()
+
+    expect(await fixture.identity()).toMatchObject({ state: 'expired', expiresAt: PAST })
+    expect(storedHorizon(fixture.ownerCredentialFile)).toBe(PAST)
+  })
+
+  it('adopts a shorter horizon, so a Relay that stopped renewing is not reported as usable', async () => {
+    const relay = await relayStandIn({ claim: { body: { claimed: true, ownerCredentialExpiresAt: PAST } } })
+    onTestFinished(relay.close)
+    const fixture = await host({ relayUrl: relay.relayUrl, expiresAt: LIVE, shares: true })
+
+    await expect.poll(async () => (await fixture.identity()).state).toBe('expired')
+    expect(storedHorizon(fixture.ownerCredentialFile)).toBe(PAST)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/owner-display.client.spec.tsx b/packages/experimental/liveshare/tests/owner-display.client.spec.tsx
new file mode 100644
index 0000000000..508816ed84
--- /dev/null
+++ b/packages/experimental/liveshare/tests/owner-display.client.spec.tsx
@@ -0,0 +1,72 @@
+// @vitest-environment jsdom
+/** The owner's display name used by the attribution line, and its durable fallbacks. */
+
+import { createElement } from 'react'
+import { cleanup, render } from '@testing-library/react'
+import { afterEach, describe, expect, it } from 'vitest'
+import {
+  forgetOwnerDisplay, rememberOwnerDisplay, rememberOwnerIdentity,
+} from '../src/client/owner-display.ts'
+import { SharedSessionOrigin } from '../src/client/user-origin.tsx'
+
+afterEach(() => {
+  cleanup()
+  forgetOwnerDisplay()
+})
+
+const SOURCE = {
+  kind: 'user',
+  rpcId: 'rpc-shared',
+  principal: {
+    kind: 'share-viewer',
+    shareId: 'share-1',
+    actor: { providerId: 'relay', tenantId: 'tenant', subjectId: 'subject-42' },
+  },
+}
+
+const t = ((_key: string, params?: { readonly subjectId?: string }) => params?.subjectId ?? '') as never
+
+/** Render the attribution line for one share-viewer source. */
+function attribution(): HTMLElement {
+  const props = { source: SOURCE, kind: 'user', matched: { subjectId: 'subject-42' }, t } as never
+  const view = render(createElement(SharedSessionOrigin, props))
+  return view.container
+}
+
+/** One identity read the face performs on mount. */
+function sharesWithIdentity(answer: () => Promise<unknown>): never {
+  return { identity: answer } as never
+}
+
+describe('owner display', () => {
+  it('shows the owner name for the owner own subject and falls back otherwise', () => {
+    rememberOwnerDisplay({ subjectId: 'subject-42', displayName: '许翰翔' })
+    expect(attribution().textContent).toBe('许翰翔')
+    expect(attribution().querySelector('[data-liveshare-origin="subject-42"]')).not.toBeNull()
+    // Repeating the same facts does not create a second store update, and clearing restores the id.
+    rememberOwnerDisplay({ subjectId: 'subject-42', displayName: '许翰翔' })
+    forgetOwnerDisplay()
+    expect(attribution().textContent).toBe('subject-42')
+  })
+
+  it('records a verified identity, and clears on a refusal or an unverified answer', async () => {
+    await expect(rememberOwnerIdentity(sharesWithIdentity(async () => ({
+      ok: true, value: { state: 'verified', relay: '', displayName: '许翰翔', subjectId: 'subject-42' },
+    })))).resolves.toBeUndefined()
+    expect(attribution().textContent).toBe('许翰翔')
+
+    await rememberOwnerIdentity(sharesWithIdentity(async () => ({ ok: false, error: { code: 'x' } })))
+    expect(attribution().textContent).toBe('subject-42')
+
+    rememberOwnerDisplay({ subjectId: 'subject-42', displayName: '许翰翔' })
+    await rememberOwnerIdentity(sharesWithIdentity(async () => ({ ok: true, value: { state: 'unverified', relay: '' } })))
+    expect(attribution().textContent).toBe('subject-42')
+  })
+
+  it('leaves an absent read and a throwing read as the durable subject id', async () => {
+    await expect(rememberOwnerIdentity({} as never)).resolves.toBeUndefined()
+    await expect(rememberOwnerIdentity(sharesWithIdentity(async () => { throw new Error('offline') })))
+      .resolves.toBeUndefined()
+    expect(attribution().textContent).toBe('subject-42')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/owner-identity-fixture.ts b/packages/experimental/liveshare/tests/owner-identity-fixture.ts
new file mode 100644
index 0000000000..345a67bbb3
--- /dev/null
+++ b/packages/experimental/liveshare/tests/owner-identity-fixture.ts
@@ -0,0 +1,106 @@
+/** Owner-host fixtures: a Relay stand-in that binds owner identity, plus a stored credential. */
+
+import { createServer } from 'node:http'
+import type { AddressInfo } from 'node:net'
+import { mkdirSync, writeFileSync } from 'node:fs'
+import { dirname, join } from 'node:path'
+import { WebSocketServer } from 'ws'
+
+/** One Relay stand-in with its recorded gateway upgrades. */
+export interface IdentityRelayFixture {
+  readonly relayUrl: string
+  readonly upgrades: URLSearchParams[]
+  readonly close: () => Promise<void>
+}
+
+/**
+ * Start a Relay stand-in that answers the owner-credential capability probe and records upgrades.
+ *
+ * Other Relay routes answer 404, which keeps the owner host's best-effort passes honest without
+ * pretending a claim succeeded.
+ * @returns Fixture origin, recorded upgrades, and its disposer.
+ */
+export async function identityRelay(): Promise<IdentityRelayFixture> {
+  return identityRelayWith({})
+}
+
+/**
+ * Start a Relay stand-in with an explicit identity-binding answer.
+ * @param options Whether the Relay supports owner credentials, and how long its probe takes to
+ * answer, which is what makes a late answer observable.
+ * @returns Fixture origin, recorded upgrades, and its disposer.
+ */
+export async function identityRelayWith(options: {
+  readonly supported?: boolean
+  readonly probeDelayMs?: number
+} = {}): Promise<IdentityRelayFixture> {
+  const upgrades: URLSearchParams[] = []
+  const server = createServer((req, res) => {
+    if (req.url?.startsWith('/__liveshare/owner-credential') === true) {
+      const answer = (): void => {
+        res.writeHead(200, { 'content-type': 'application/json' })
+        res.end(JSON.stringify({ supported: options.supported ?? true }))
+      }
+      if (options.probeDelayMs === undefined) answer()
+      else setTimeout(answer, options.probeDelayMs)
+      return
+    }
+    res.writeHead(404, { 'content-type': 'application/json' })
+    res.end('{"error":"not-found"}')
+  })
+  const sockets = new WebSocketServer({ server })
+  sockets.on('connection', (_socket, request) => {
+    upgrades.push(new URL(request.url ?? '/', 'http://relay.local').searchParams)
+  })
+  await new Promise<void>((resolve) => { server.listen(0, '127.0.0.1', resolve) })
+  const { port } = server.address() as AddressInfo
+  return {
+    relayUrl: `http://127.0.0.1:${String(port)}`,
+    upgrades,
+    close: async () => {
+      for (const client of sockets.clients) client.terminate()
+      await new Promise<void>((resolve) => { sockets.close(() => { resolve() }) })
+      await new Promise<void>((resolve) => { server.close(() => { resolve() }) })
+    },
+  }
+}
+
+/**
+ * Write an owner state file that already has a saved Relay address, and optionally stored shares.
+ *
+ * The saved address is the only one this build has, so a spec that used to pass one in the host
+ * configuration writes what the Share dialog would have persisted instead.
+ * @param file Owner state file path.
+ * @param relayUrl Saved Relay base URL.
+ * @param shares Stored share records, each read against the saved address.
+ * @returns The same file path.
+ */
+export function writeOwnerState(
+  file: string,
+  relayUrl: string,
+  shares: readonly Record<string, unknown>[] = [],
+): string {
+  mkdirSync(dirname(file), { recursive: true })
+  writeFileSync(file, JSON.stringify({
+    relayUrl,
+    shares: shares.map(share => ({ relay: relayUrl, ...share })),
+  }, null, 2), { mode: 0o600 })
+  return file
+}
+
+/**
+ * Write one stored owner credential beside an owner state file.
+ * @param ownerStateFile Owner state file the host configuration points at.
+ * @param relay Relay base URL the credential is bound to.
+ * @returns Credential file path the host loads by default.
+ */
+export function writeOwnerCredential(ownerStateFile: string, relay: string): string {
+  const file = join(dirname(ownerStateFile), 'owner-credential.json')
+  writeFileSync(file, JSON.stringify({
+    relay,
+    credential: 'fixture-payload.fixture-signature',
+    expiresAt: new Date(Date.now() + 60 * 60_000).toISOString(),
+    subjectId: 'owner',
+  }, null, 2), { mode: 0o600 })
+  return file
+}
diff --git a/packages/experimental/liveshare/tests/owner-identity.client.spec.ts b/packages/experimental/liveshare/tests/owner-identity.client.spec.ts
new file mode 100644
index 0000000000..11114ce699
--- /dev/null
+++ b/packages/experimental/liveshare/tests/owner-identity.client.spec.ts
@@ -0,0 +1,117 @@
+/** Owner identity status: what the dialog states, and what it refuses to invent. */
+
+import { describe, expect, it } from 'vitest'
+import { identitySubjectLabel } from '../src/owner-identity.ts'
+import {
+  loginReturnUrl, mayCreateShare, ownerLoginHref, readOwnerIdentity, UNKNOWN_OWNER_IDENTITY,
+} from '../src/client/owner-identity.ts'
+
+const RELAY = 'https://relay.example.test'
+
+describe('owner identity status', () => {
+  it('states a verified identity with its name, subject, expiry, and renewal', () => {
+    const status = readOwnerIdentity({
+      state: 'verified',
+      relay: RELAY,
+      displayName: '许翰翔',
+      subjectId: 'feishu:tenant:ou_9f2c',
+      avatarUrl: 'https://cdn.example/owner.png',
+      expiresAt: '2026-09-11T22:00:00Z',
+      renewed: true,
+    }, RELAY)
+    expect(status).toEqual({
+      state: 'verified',
+      relay: RELAY,
+      displayName: '许翰翔',
+      subjectId: 'feishu:tenant:ou_9f2c',
+      avatarUrl: 'https://cdn.example/owner.png',
+      expiresAt: '2026-09-11T22:00:00Z',
+      renewed: true,
+    })
+    expect(mayCreateShare(status)).toBe(true)
+    // A page that is offered no avatar renders without one instead of inventing a placeholder URL.
+    expect(readOwnerIdentity({ state: 'verified', relay: RELAY }, RELAY)).not.toHaveProperty('avatarUrl')
+  })
+
+  it('states the two states that must verify before a share, and blocks creation', () => {
+    for (const state of ['expired', 'unverified'] as const) {
+      const status = readOwnerIdentity({ state, relay: RELAY }, RELAY)
+      expect(status.state).toBe(state)
+      expect(mayCreateShare(status)).toBe(false)
+    }
+  })
+
+  it('refuses to reuse a status read for another Relay address', () => {
+    const status = readOwnerIdentity({
+      state: 'verified', relay: 'https://other.example.test', displayName: '许翰翔',
+    }, RELAY)
+    expect(status.state).toBe('relay-changed')
+    expect(status.relay).toBe(RELAY)
+    // The name is not carried over as if this address had verified it.
+    expect(mayCreateShare(status)).toBe(false)
+  })
+
+  it('states a status read for another address with no name at all when the host named none', () => {
+    expect(readOwnerIdentity({ state: 'unverified', relay: 'https://other.example.test' }, RELAY))
+      .toEqual({ state: 'relay-changed', relay: RELAY })
+  })
+
+  it('states nothing it cannot read, and keeps the host as the authority then', () => {
+    expect(readOwnerIdentity(undefined, RELAY)).toEqual({ state: 'unknown', relay: RELAY })
+    expect(readOwnerIdentity({}, RELAY)).toEqual({ state: 'unknown', relay: RELAY })
+    expect(readOwnerIdentity({ state: 3 }, RELAY)).toEqual({ state: 'unknown', relay: RELAY })
+    expect(readOwnerIdentity({ state: 'who-knows' }, RELAY)).toEqual({ state: 'unknown', relay: RELAY })
+    expect(readOwnerIdentity('verified', RELAY).state).toBe('unknown')
+    expect(readOwnerIdentity(undefined, '')).toEqual(UNKNOWN_OWNER_IDENTITY)
+    // An unreadable status refuses as well: a host that cannot state what it verified must not be
+    // assumed to refuse on its own, so only a verified identity may submit.
+    for (const state of ['expired', 'unverified', 'relay-changed', 'relay-unsupported', 'unknown'] as const) {
+      expect(mayCreateShare({ state, relay: RELAY })).toBe(false)
+    }
+  })
+
+  it('keeps an avatar only when the identity published an http url', () => {
+    const withAvatar = readOwnerIdentity({
+      state: 'verified', relay: RELAY, avatarUrl: 'https://avatar.example.test/owner.png',
+    }, RELAY)
+    expect(withAvatar.avatarUrl).toBe('https://avatar.example.test/owner.png')
+    expect(readOwnerIdentity({ state: 'verified', relay: RELAY }, RELAY).avatarUrl).toBeUndefined()
+    // A page renders an image from the identity provider, never from an arbitrary scheme.
+    expect(readOwnerIdentity({ state: 'verified', relay: RELAY, avatarUrl: 'javascript:alert(1)' }, RELAY).avatarUrl)
+      .toBeUndefined()
+  })
+
+  it('labels a nameless verified subject from the identity itself', () => {
+    expect(identitySubjectLabel('feishu:tenant:ou_9f2c4d')).toBe('ou_9f2c4d')
+    expect(identitySubjectLabel('short')).toBe('short')
+  })
+
+  it('keeps the whole subject when the identity leaves nothing after its last separator', () => {
+    // A subject that ends at a separator has no trailing part to show; an empty label would render
+    // as an owner nobody can tell apart.
+    expect(identitySubjectLabel('feishu:tenant:')).toBe('feishu:tenant:')
+    expect(identitySubjectLabel('')).toBe('')
+  })
+
+  it('refuses to create a share on a Relay that cannot verify identities', () => {
+    const status = readOwnerIdentity({ state: 'relay-unsupported', relay: RELAY }, RELAY)
+    expect(status.state).toBe('relay-unsupported')
+    expect(mayCreateShare(status)).toBe(false)
+  })
+
+  it('never passes a credential or one-time hand-off back through a login round trip', () => {
+    expect(loginReturnUrl('https://dsh.example.test/session?shareId=s1&ownerStartupToken=secret#/tab'))
+      .toBe('https://dsh.example.test/session?shareId=s1')
+    expect(loginReturnUrl('https://dsh.example.test/?code=abc&ticket=t&token=x&state=open'))
+      .toBe('https://dsh.example.test/?state=open')
+    expect(loginReturnUrl('https://dsh.example.test/?access_token=x&session=keep'))
+      .toBe('https://dsh.example.test/?session=keep')
+    // An address the browser cannot parse is returned unchanged rather than silently rewritten.
+    expect(loginReturnUrl('not a url')).toBe('not a url')
+  })
+
+  it('names the Relay verification entry once, with this page as the return address', () => {
+    expect(ownerLoginHref('https://relay.example.test/', 'https://dsh.example.test/?ownerStartupToken=s'))
+      .toBe('https://relay.example.test/__liveshare/auth/start?returnTo=https%3A%2F%2Fdsh.example.test%2F')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/owner-login-wire.spec.ts b/packages/experimental/liveshare/tests/owner-login-wire.spec.ts
new file mode 100644
index 0000000000..457b305881
--- /dev/null
+++ b/packages/experimental/liveshare/tests/owner-login-wire.spec.ts
@@ -0,0 +1,322 @@
+/**
+ * The host's half of the Owner login wire: what it publishes, and what it refuses.
+ *
+ * The Relay half is covered against a real Relay elsewhere; these cases pin the contract the Owner client
+ * reads and the bindings it cannot loosen — the transaction's own origin, its single use, and the fact that
+ * a request that never named an origin cannot begin one.
+ */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import { mkdtempSync, readFileSync, realpathSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { apply, type Config } from '../src/host/share-host.ts'
+import type {} from '../src/index.ts'
+import { writeOwnerState } from './owner-identity-fixture.ts'
+
+const RELAY = 'https://relay.example.test/liveshare'
+const OWNER_ORIGIN = 'http://owner.test'
+const closers: Array<() => Promise<void> | void> = []
+afterEach(async () => {
+  try {
+    for (const close of closers.splice(0).reverse()) await close()
+  } finally {
+    vi.unstubAllGlobals()
+  }
+})
+
+/** How this case's fixture Relay answers the owner-credential exchange, if it answers at all. */
+interface RelayScript {
+  /** What the probe reports about identity support; true unless the case says otherwise. */
+  readonly supported?: boolean
+  /** Answer one redemption POST; the default refuses it as an unreachable Relay does. */
+  readonly credentialAnswer?: () => Response | Promise<Response>
+  /** Credential file to configure; the default sits in this case's temporary directory. */
+  readonly credentialFile?: string
+}
+
+/** One host whose registered routes can be invoked, as the shipped Web host invokes them. */
+async function host(script: RelayScript = {}, relay: string | null = RELAY) {
+  const temporary = realpathSync(mkdtempSync(join(tmpdir(), 'liveshare-login-wire-')))
+  closers.push(() => { rmSync(temporary, { recursive: true, force: true }) })
+  // Only the configured endpoint is intercepted; the fixture never reaches an external Relay.
+  vi.stubGlobal('fetch', (input: string | URL | Request, init?: RequestInit) => {
+    const request = new Request(input, init)
+    if (request.url !== `${RELAY}/__liveshare/owner-credential`) {
+      throw new Error(`unexpected fixture request ${request.url}`)
+    }
+    if (request.method === 'POST') {
+      return script.credentialAnswer?.() ?? Promise.reject(new Error('fixture Relay unavailable'))
+    }
+    return Promise.resolve(Response.json({ supported: script.supported ?? true }))
+  })
+  const routes = new Map<string, (request: Request) => Promise<Response>>()
+  const ctx = Object.assign(new Context(), {
+    connection: {
+      authenticatedUrl: () => 'http://127.0.0.1:3092/?token=test',
+      fetch: {
+        register: (route: { readonly path: string; readonly fetch: (request: Request) => Promise<Response> }) => {
+          routes.set(route.path, route.fetch)
+          return Promise.resolve(async () => {})
+        },
+      },
+    },
+    webServer: { port: 3092 },
+  })
+  const statePath = join(temporary, 'owner-shares.json')
+  const config: Config = {
+    ownerStateFile: relay === null ? statePath : writeOwnerState(statePath, relay),
+    ownerCredentialFile: script.credentialFile ?? join(temporary, 'owner-credential.json'),
+  }
+  closers.push(() => ctx.fiber.dispose())
+  closers.push(await apply(ctx, config))
+  const call = (path: string, body: unknown, headers: Record<string, string>): Promise<Response> => {
+    const route = routes.get(path)
+    if (route === undefined) throw new Error(`missing route ${path}`)
+    return route(new Request(`http://127.0.0.1:3092${path}`, {
+      method: 'POST',
+      headers: { 'content-type': 'application/json', ...headers },
+      body: JSON.stringify(body),
+    }))
+  }
+  return { call, routes, ctx, temporary }
+}
+
+describe('owner login wire', () => {
+  it('publishes the popup URL, the transaction deadline, and the Relay’s message origin', async () => {
+    const { call } = await host()
+    const response = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+
+    expect(response.status).toBe(200)
+    const body = await response.json() as Record<string, unknown>
+    // The two origins are distinct facts: the Relay posts from its own, the Owner page's is bound server-side.
+    expect(body.messageOrigin).toBe('https://relay.example.test')
+    expect(body.authorizationUrl).toBeUndefined()
+    const authorizeUrl = new URL(String(body.authorizeUrl))
+    expect(authorizeUrl.origin + authorizeUrl.pathname)
+      // The configured Relay address carries its public base path, and the authorization page is under it.
+      .toBe('https://relay.example.test/liveshare/__liveshare/owner-authorize')
+    expect(authorizeUrl.searchParams.get('state')).toBe(body.state)
+    expect(authorizeUrl.searchParams.get('instance')).not.toBeNull()
+    expect(authorizeUrl.searchParams.get('origin')).toBe(OWNER_ORIGIN)
+    expect(authorizeUrl.searchParams.get('code_challenge')).toMatch(/^[A-Za-z0-9_-]{43}$/u)
+    expect(typeof body.expiresAt).toBe('string')
+    expect(Date.parse(String(body.expiresAt))).toBeGreaterThan(Date.now())
+  })
+
+  it('refuses every sign-in step while no address is saved', async () => {
+    const { call } = await host({}, null)
+
+    // There is no address to authorize at, so beginning says so; a completion or a posted credential
+    // belongs to a configuration this host does not have and is refused as the mismatch it is.
+    const started = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+    expect(started.status).toBe(409)
+    expect(await started.json()).toEqual({ error: 'owner-login-unavailable', reason: 'relay-required' })
+
+    const redeemed = await call('/api/liveshare.ownerLoginRedeem', { state: 'state', code: 'code' }, { origin: OWNER_ORIGIN })
+    expect(redeemed.status).toBe(403)
+    expect(await redeemed.json()).toEqual({ error: 'owner-login-mismatch' })
+
+    const stored = await call('/api/liveshare.ownerCredential', { credential: 'payload.signature' }, {})
+    expect(stored.status).toBe(403)
+    expect(await stored.json()).toEqual({ error: 'owner-login-mismatch' })
+  })
+
+  it('refuses to begin a transaction for a request that names no origin', async () => {
+    const { call } = await host()
+    const response = await call('/api/liveshare.ownerLoginStart', {}, {})
+
+    expect(response.status).toBe(400)
+    await expect(response.json()).resolves.toMatchObject({
+      error: 'owner-login-unavailable',
+      reason: 'origin-required',
+    })
+  })
+
+  it('refuses a completion from another page, and one for a transaction it never began', async () => {
+    const { call } = await host()
+    const started = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+    const { state } = await started.json() as { state: string }
+
+    // Another page holding the state cannot complete it: the origin is bound when the transaction begins.
+    const foreign = await call(
+      '/api/liveshare.ownerLoginRedeem',
+      { state, code: 'a-code' },
+      { origin: 'https://attacker.example' },
+    )
+    expect(foreign.status).toBe(403)
+    await expect(foreign.json()).resolves.toMatchObject({ error: 'owner-login-mismatch' })
+
+    // The refusal did not consume the transaction, so the owner's own page may still finish it.
+    const unknown = await call(
+      '/api/liveshare.ownerLoginRedeem',
+      { state: 'no-such-transaction', code: 'a-code' },
+      { origin: OWNER_ORIGIN },
+    )
+    expect(unknown.status).toBe(403)
+    await expect(unknown.json()).resolves.toMatchObject({ error: 'owner-login-expired' })
+  })
+
+  it('consumes a transaction exactly once, and drops a cancelled one', async () => {
+    const { call } = await host()
+    const first = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+    const { state } = await first.json() as { state: string }
+
+    // The transaction completes and then fails at the unreachable Relay: the completion is spent either way.
+    const spent = await call(
+      '/api/liveshare.ownerLoginRedeem',
+      { state, code: 'a-code' },
+      { origin: OWNER_ORIGIN },
+    )
+    expect(spent.status).toBe(502)
+    await expect(spent.json()).resolves.toMatchObject({ error: 'owner-login-failed' })
+    const retry = await call(
+      '/api/liveshare.ownerLoginRedeem',
+      { state, code: 'a-code' },
+      { origin: OWNER_ORIGIN },
+    )
+    await expect(retry.json()).resolves.toMatchObject({ error: 'owner-login-expired' })
+
+    const cancelled = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+    const cancelledState = (await cancelled.json() as { state: string }).state
+    await expect((await call('/api/liveshare.ownerLoginCancel', { state: cancelledState }, { origin: OWNER_ORIGIN }))
+      .json()).resolves.toMatchObject({ cancelled: true })
+    // A cancelled attempt leaves no verifier, so a code minted for it can no longer be exchanged.
+    await expect((await call(
+      '/api/liveshare.ownerLoginRedeem',
+      { state: cancelledState, code: 'a-code' },
+      { origin: OWNER_ORIGIN },
+    )).json()).resolves.toMatchObject({ error: 'owner-login-expired' })
+    await expect((await call('/api/liveshare.ownerLoginCancel', { state: cancelledState }, { origin: OWNER_ORIGIN }))
+      .json()).resolves.toMatchObject({ cancelled: false })
+  })
+
+  it('refuses to begin at a Relay that cannot verify identities', async () => {
+    const { call } = await host({ supported: false })
+    const response = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+
+    expect(response.status).toBe(409)
+    await expect(response.json()).resolves.toMatchObject({
+      error: 'owner-login-unavailable',
+      reason: 'relay-upgrade-required',
+    })
+  })
+
+  it('completes an authorization and stores the credential the Relay issued', async () => {
+    const { call, temporary } = await host({
+      credentialAnswer: () => Response.json({ credential: 'relay-token', displayName: 'Owner' }),
+    })
+    const started = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+    const { state } = await started.json() as { state: string }
+
+    const redeemed = await call('/api/liveshare.ownerLoginRedeem', { state, code: 'a-code' }, { origin: OWNER_ORIGIN })
+    expect(redeemed.status).toBe(200)
+    await expect(redeemed.json()).resolves.toMatchObject({
+      state: 'verified',
+      relay: RELAY,
+      renewed: true,
+    })
+    // The credential the Relay issued is what this host now holds, persisted beside its owner state.
+    const stored = JSON.parse(readFileSync(join(temporary, 'owner-credential.json'), 'utf8')) as Record<string, unknown>
+    expect(stored).toMatchObject({ relay: RELAY, credential: 'relay-token' })
+  })
+
+  it('refuses a completion that names no origin, no state, or no code', async () => {
+    const { call } = await host({ credentialAnswer: () => Response.json({ credential: 'relay-token' }) })
+    const started = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+    const { state } = await started.json() as { state: string }
+
+    // The page's origin is part of the binding, so a request that names none cannot complete it.
+    const originless = await call('/api/liveshare.ownerLoginRedeem', { state, code: 'a-code' }, {})
+    expect(originless.status).toBe(403)
+    await expect(originless.json()).resolves.toMatchObject({ error: 'owner-login-mismatch' })
+
+    for (const body of [{ state: 42, code: 42 }, { state: '', code: '' }, {}, { state, code: 42 }]) {
+      const invalid = await call('/api/liveshare.ownerLoginRedeem', body, { origin: OWNER_ORIGIN })
+      expect(invalid.status).toBe(400)
+      await expect(invalid.json()).resolves.toMatchObject({ error: 'invalid-completion' })
+    }
+  })
+
+  it('states the reason the Relay gave for refusing the code, and keeps no credential', async () => {
+    for (const [answer, error, reason] of [
+      [{ error: 'code-replayed' }, 'owner-login-replayed', 'code-replayed'],
+      [{ error: 'code-expired' }, 'owner-login-failed', 'code-expired'],
+      [{ error: 42 }, 'owner-login-failed', undefined],
+      [{}, 'owner-login-failed', undefined],
+      [{ credential: '' }, 'owner-login-failed', undefined],
+    ] as const) {
+      const { call } = await host({ credentialAnswer: () => Response.json(answer) })
+      const started = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+      const { state } = await started.json() as { state: string }
+      const redeemed = await call('/api/liveshare.ownerLoginRedeem', { state, code: 'a-code' }, { origin: OWNER_ORIGIN })
+      expect(redeemed.status).toBe(502)
+      const body = await redeemed.json() as Record<string, unknown>
+      expect(body.error).toBe(error)
+      expect(body.reason).toBe(reason)
+    }
+  })
+
+  it('refuses the credential once the owner changed the Relay while the Relay was answering', async () => {
+    const pending = Promise.withResolvers<Response>()
+    const { call, ctx } = await host({ credentialAnswer: () => pending.promise })
+    const started = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+    const { state } = await started.json() as { state: string }
+    const completion = call('/api/liveshare.ownerLoginRedeem', { state, code: 'a-code' }, { origin: OWNER_ORIGIN })
+    await ctx.liveshareShares.setRelay({ relayUrl: 'https://other.example.test' })
+    pending.resolve(Response.json({ credential: 'relay-token' }))
+    const redeemed = await completion
+    expect(redeemed.status).toBe(403)
+    await expect(redeemed.json()).resolves.toMatchObject({ error: 'owner-login-mismatch' })
+  })
+
+  it('reports a credential it could not persist instead of claiming the sign-in', async () => {
+    const root = realpathSync(mkdtempSync(join(tmpdir(), 'liveshare-login-wire-')))
+    closers.push(() => { rmSync(root, { recursive: true, force: true }) })
+    const blocker = join(root, 'not-a-directory')
+    writeFileSync(blocker, '')
+    const { call } = await host({
+      credentialAnswer: () => Response.json({ credential: 'relay-token' }),
+      credentialFile: join(blocker, 'owner-credential.json'),
+    })
+    const started = await call('/api/liveshare.ownerLoginStart', {}, { origin: OWNER_ORIGIN })
+    const { state } = await started.json() as { state: string }
+
+    const redeemed = await call('/api/liveshare.ownerLoginRedeem', { state, code: 'a-code' }, { origin: OWNER_ORIGIN })
+    expect(redeemed.status).toBe(500)
+    await expect(redeemed.json()).resolves.toMatchObject({ error: 'owner-credential-unavailable' })
+  })
+
+  it('refuses a cancel for a state that is not a transaction state', async () => {
+    const { call } = await host()
+    const invalid = await call('/api/liveshare.ownerLoginCancel', { state: 42 }, { origin: OWNER_ORIGIN })
+    expect(invalid.status).toBe(400)
+    await expect(invalid.json()).resolves.toMatchObject({ error: 'invalid-cancel' })
+    const missing = await call('/api/liveshare.ownerLoginCancel', {}, { origin: OWNER_ORIGIN })
+    expect(missing.status).toBe(400)
+  })
+
+  it('refuses a login body that is not a JSON object', async () => {
+    const { call } = await host()
+    const response = await call('/api/liveshare.ownerLoginRedeem', 'not-an-object', { origin: OWNER_ORIGIN })
+    expect(response.status).toBe(400)
+    await expect(response.json()).resolves.toMatchObject({ error: 'invalid-json' })
+  })
+
+  it('refuses a credential body with no credential, and reports one it cannot store', async () => {
+    const { call } = await host()
+    const invalid = await call('/api/liveshare.ownerCredential', { credential: 42 }, { origin: OWNER_ORIGIN })
+    expect(invalid.status).toBe(400)
+    await expect(invalid.json()).resolves.toMatchObject({ error: 'invalid-credential' })
+
+    const root = realpathSync(mkdtempSync(join(tmpdir(), 'liveshare-login-wire-')))
+    closers.push(() => { rmSync(root, { recursive: true, force: true }) })
+    const blocker = join(root, 'not-a-directory')
+    writeFileSync(blocker, '')
+    const blocked = await host({ credentialFile: join(blocker, 'owner-credential.json') })
+    const stored = await blocked.call('/api/liveshare.ownerCredential', { credential: 'relay-token' }, {})
+    expect(stored.status).toBe(500)
+    await expect(stored.json()).resolves.toMatchObject({ error: 'owner-credential-unavailable' })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/owner-login.client.spec.ts b/packages/experimental/liveshare/tests/owner-login.client.spec.ts
new file mode 100644
index 0000000000..e44ad0b82b
--- /dev/null
+++ b/packages/experimental/liveshare/tests/owner-login.client.spec.ts
@@ -0,0 +1,485 @@
+// @vitest-environment jsdom
+/** The owner's Relay sign-in: which message may hand this page a code, and what the page states. */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import {
+  beginOwnerLogin, hostOwnerLogin, OWNER_LOGIN_ACK_TYPE, OWNER_LOGIN_CODE_TYPE, readOwnerLoginCode,
+  readOwnerLoginFailure, type OwnerLoginHost, type OwnerLoginPage, type OwnerLoginPhase,
+  type OwnerLoginResult, type OwnerLoginTicket,
+} from '../src/client/owner-login.ts'
+import type { OwnerIdentityStatus } from '../src/client/owner-identity.ts'
+
+const ORIGIN = 'https://relay.example.test'
+const PAGE_ORIGIN = 'https://dsh.example.test'
+const OTHER_RELAY = 'https://other.example.test'
+const TICKET: OwnerLoginTicket = {
+  authorizeUrl: `${ORIGIN}/__liveshare/auth/start?state=s1`,
+  state: 's1',
+  messageOrigin: ORIGIN,
+}
+
+afterEach(() => {
+  vi.unstubAllGlobals()
+})
+
+describe('owner login message', () => {
+  const popup = {}
+  const expected = { origin: ORIGIN, source: popup, state: 's1' }
+  const message = (overrides: {
+    readonly origin?: string
+    readonly source?: unknown
+    readonly data?: unknown
+  } = {}) => ({
+    origin: overrides.origin ?? ORIGIN,
+    source: 'source' in overrides ? overrides.source : popup,
+    data: 'data' in overrides
+      ? overrides.data
+      : { type: OWNER_LOGIN_CODE_TYPE, code: 'one-time-code', state: 's1' },
+  })
+
+  it('takes the code one popup hands back for this attempt', () => {
+    expect(readOwnerLoginCode(message(), expected)).toEqual({ code: 'one-time-code', state: 's1' })
+  })
+
+  it('drops a message from another origin, window, state, or shape', () => {
+    // Another page on another origin is not this attempt's sender, whatever it says.
+    expect(readOwnerLoginCode(message({ origin: 'https://evil.example.test' }), expected)).toBeUndefined()
+    // Nor is another window on the right origin.
+    expect(readOwnerLoginCode(message({ source: {} }), expected)).toBeUndefined()
+    expect(readOwnerLoginCode(message({ source: null }), expected)).toBeUndefined()
+    // A code minted for another transaction (or a stale one from an earlier attempt) is not ours.
+    expect(readOwnerLoginCode(message({ data: { type: OWNER_LOGIN_CODE_TYPE, code: 'c', state: 's2' } }), expected))
+      .toBeUndefined()
+    expect(readOwnerLoginCode(message({ data: { type: OWNER_LOGIN_CODE_TYPE, code: 'c', state: '' } }), expected))
+      .toBeUndefined()
+    // A message that is not even the shape this page posts on is dropped, not guessed at.
+    expect(readOwnerLoginCode(message({ data: { type: 'liveshare-auth-ack', code: 'c', state: 's1' } }), expected))
+      .toBeUndefined()
+    expect(readOwnerLoginCode(message({ data: 'one-time-code' }), expected)).toBeUndefined()
+    expect(readOwnerLoginCode(message({ data: null }), expected)).toBeUndefined()
+    expect(readOwnerLoginCode(message({ data: { type: OWNER_LOGIN_CODE_TYPE, state: 's1' } }), expected))
+      .toBeUndefined()
+    expect(readOwnerLoginCode(message({ data: { type: OWNER_LOGIN_CODE_TYPE, code: '', state: 's1' } }), expected))
+      .toBeUndefined()
+  })
+
+  it('never accepts an attempt the host bound to no origin or a wildcard', () => {
+    expect(readOwnerLoginCode(message(), { ...expected, origin: '*' })).toBeUndefined()
+    expect(readOwnerLoginCode(message(), { ...expected, origin: '' })).toBeUndefined()
+    expect(readOwnerLoginCode(message(), { ...expected, source: null })).toBeUndefined()
+  })
+
+  it('states the reason a host named, and nothing for a code it does not know', () => {
+    expect(readOwnerLoginFailure({ error: 'owner-login-cancelled' })).toBe('cancelled')
+    expect(readOwnerLoginFailure({ error: 'owner-login-expired' })).toBe('expired')
+    expect(readOwnerLoginFailure({ error: 'owner-login-mismatch' })).toBe('mismatch')
+    expect(readOwnerLoginFailure({ error: 'owner-login-replayed' })).toBe('replayed')
+    expect(readOwnerLoginFailure({ error: 'owner-login-unavailable' })).toBe('unavailable')
+    expect(readOwnerLoginFailure({ error: 'owner-login-failed' })).toBe('failed')
+    expect(readOwnerLoginFailure({ error: 'owner-login-newer-than-this-build' })).toBeUndefined()
+    expect(readOwnerLoginFailure({ error: 42 })).toBeUndefined()
+    expect(readOwnerLoginFailure(undefined)).toBeUndefined()
+  })
+})
+
+describe('owner login host face', () => {
+  /** Answer one host call with the given status and body. */
+  function answering(status: number, body: unknown) {
+    return vi.fn((_input: string, _init?: RequestInit) => Promise.resolve(Response.json(body, { status })))
+  }
+
+  it('asks its own host for one transaction and reads the ticket it may open', async () => {
+    const request = answering(200, {
+      authorizeUrl: `${ORIGIN}/__liveshare/auth/start?state=s1`,
+      state: 's1',
+      messageOrigin: ORIGIN,
+      expiresAt: '2026-09-13T00:00:00Z',
+    })
+    await expect(hostOwnerLogin(ORIGIN, request).start()).resolves.toEqual({
+      ok: true,
+      value: { ...TICKET, expiresAt: '2026-09-13T00:00:00Z' },
+    })
+    expect(request.mock.calls[0]?.[0]).toBe('api/liveshare.ownerLoginStart')
+    expect(request.mock.calls[0]?.[1]).toMatchObject({ method: 'POST', credentials: 'same-origin' })
+  })
+
+  it('posts through this page\u2019s own fetch when the caller names none', async () => {
+    const fetchDouble = vi.fn((_input: RequestInfo | URL, _init?: RequestInit) =>
+      Promise.resolve(Response.json({ error: 'owner-login-unavailable' }, { status: 503 })))
+    vi.stubGlobal('fetch', fetchDouble)
+    await expect(hostOwnerLogin(ORIGIN).start()).resolves.toEqual({ ok: false, reason: 'unavailable' })
+    expect(fetchDouble).toHaveBeenCalledWith('api/liveshare.ownerLoginStart', expect.objectContaining({ method: 'POST' }))
+  })
+
+  it('reads a ticket without a stated deadline, and drops an address that is not a URL', async () => {
+    await expect(hostOwnerLogin(ORIGIN, answering(200, {
+      authorizeUrl: `${ORIGIN}/__liveshare/auth/start?state=s1`,
+      state: 's1',
+      messageOrigin: ORIGIN,
+    })).start()).resolves.toEqual({ ok: true, value: TICKET })
+    // An address that cannot be parsed is refused rather than handed to a window.
+    await expect(hostOwnerLogin(ORIGIN, answering(200, {
+      authorizeUrl: 'not a url',
+      state: 's1',
+      messageOrigin: ORIGIN,
+    })).start()).resolves.toEqual({ ok: false, reason: 'unavailable' })
+  })
+
+  it('states an unnamed refusal as unavailable, and an unreadable body as no answer at all', async () => {
+    await expect(hostOwnerLogin(ORIGIN, answering(503, {})).start())
+      .resolves.toEqual({ ok: false, reason: 'unavailable' })
+    // A body that is not JSON leaves nothing to read; the call still answers rather than throwing.
+    const unreadable = vi.fn((_input: string, _init?: RequestInit) =>
+      Promise.resolve(new Response('not json', { status: 200 })))
+    await expect(hostOwnerLogin(ORIGIN, unreadable).start())
+      .resolves.toEqual({ ok: false, reason: 'unavailable' })
+  })
+
+  it('refuses a ticket it must not use: no state, no address, or no sender origin', async () => {
+    for (const body of [
+      { authorizeUrl: `${ORIGIN}/auth`, messageOrigin: ORIGIN },
+      { state: 's1', messageOrigin: ORIGIN },
+      { authorizeUrl: `${ORIGIN}/auth`, state: 's1' },
+      // The origin the host answered *this page* for is not a sender origin, so a ticket that names
+      // only that cannot have any of its messages verified.
+      { authorizeUrl: `${ORIGIN}/auth`, state: 's1', origin: PAGE_ORIGIN },
+      { authorizeUrl: `${ORIGIN}/auth`, state: 's1', messageOrigin: '*' },
+      { authorizeUrl: `${ORIGIN}/auth`, state: 's1', messageOrigin: '' },
+      { authorizeUrl: 'javascript:alert(1)', state: 's1', messageOrigin: ORIGIN },
+    ]) {
+      await expect(hostOwnerLogin(ORIGIN, answering(200, body)).start())
+        .resolves.toEqual({ ok: false, reason: 'unavailable' })
+    }
+    await expect(hostOwnerLogin(ORIGIN, answering(503, { error: 'owner-login-unavailable' })).start())
+      .resolves.toEqual({ ok: false, reason: 'unavailable' })
+    await expect(hostOwnerLogin(ORIGIN, vi.fn(() => Promise.reject(new Error('offline')))).start())
+      .resolves.toEqual({ ok: false, reason: 'unavailable' })
+  })
+
+  it('submits the code with its state, and reads the identity the host answers with', async () => {
+    const request = answering(200, { state: 'verified', relay: ORIGIN, displayName: '许翰翔' })
+    const redeemed = await hostOwnerLogin(ORIGIN, request).redeem('one-time-code', 's1')
+    expect(redeemed).toEqual({
+      ok: true,
+      value: { state: 'verified', relay: ORIGIN, displayName: '许翰翔' },
+    })
+    const [path, init] = request.mock.calls[0] ?? []
+    expect(path).toBe('api/liveshare.ownerLoginRedeem')
+    expect(init?.body).toBe(JSON.stringify({ code: 'one-time-code', state: 's1' }))
+    // The page never puts the code in an address, so nothing it hands the host can be replayed from
+    // a URL, a referrer, or a log line.
+    expect(path).not.toContain('one-time-code')
+  })
+
+  it('never calls a redemption done unless the host read a verified identity back for this Relay', async () => {
+    // A 200 that leaves the owner unverified is not a sign-in this page may report as verified.
+    await expect(hostOwnerLogin(ORIGIN, answering(200, { state: 'unverified', relay: ORIGIN }))
+      .redeem('c', 's1')).resolves.toEqual({ ok: false, reason: 'failed' })
+    await expect(hostOwnerLogin(ORIGIN, answering(200, { state: 'expired', relay: ORIGIN }))
+      .redeem('c', 's1')).resolves.toEqual({ ok: false, reason: 'failed' })
+    // A verified identity another Relay issued belongs to that address, not to this attempt.
+    await expect(hostOwnerLogin(ORIGIN, answering(200, { state: 'verified', relay: OTHER_RELAY }))
+      .redeem('c', 's1')).resolves.toEqual({ ok: false, reason: 'mismatch' })
+    // And an answer this page cannot read at all is a failure rather than a verified owner.
+    await expect(hostOwnerLogin(ORIGIN, answering(200, 'not json')).redeem('c', 's1'))
+      .resolves.toEqual({ ok: false, reason: 'failed' })
+  })
+
+  it('proves the Relay from what the host stated, never from the address this page asked for', async () => {
+    // The binding is this attempt's own: a body that names no Relay, an empty one, or a type that is
+    // not an address leaves nothing to prove the identity belongs here, so it is a failure rather
+    // than an address quietly filled in from the request.
+    for (const body of [
+      { state: 'verified' },
+      { state: 'verified', relay: '' },
+      { state: 'verified', relay: 42 },
+      { state: 'verified', relay: null },
+    ]) {
+      await expect(hostOwnerLogin(ORIGIN, answering(200, body)).redeem('c', 's1'))
+        .resolves.toEqual({ ok: false, reason: 'failed' })
+    }
+  })
+
+  it('states the reason a refused redemption named', async () => {
+    await expect(hostOwnerLogin(ORIGIN, answering(409, { error: 'owner-login-replayed' })).redeem('c', 's1'))
+      .resolves.toEqual({ ok: false, reason: 'replayed' })
+    await expect(hostOwnerLogin(ORIGIN, answering(410, { error: 'owner-login-expired' })).redeem('c', 's1'))
+      .resolves.toEqual({ ok: false, reason: 'expired' })
+    await expect(hostOwnerLogin(ORIGIN, answering(500, {})).redeem('c', 's1'))
+      .resolves.toEqual({ ok: false, reason: 'failed' })
+    await expect(hostOwnerLogin(ORIGIN, vi.fn(() => Promise.reject(new Error('offline')))).redeem('c', 's1'))
+      .resolves.toEqual({ ok: false, reason: 'unavailable' })
+  })
+
+  it('cancels the transaction it started, and survives a host that cannot be reached', async () => {
+    const request = answering(200, {})
+    await hostOwnerLogin(ORIGIN, request).cancel('s1')
+    expect(request.mock.calls[0]?.[0]).toBe('api/liveshare.ownerLoginCancel')
+    expect(request.mock.calls[0]?.[1]?.body).toBe(JSON.stringify({ state: 's1' }))
+    await expect(hostOwnerLogin(ORIGIN, vi.fn(() => Promise.reject(new Error('offline')))).cancel('s1'))
+      .resolves.toBeUndefined()
+  })
+})
+
+describe('owner login attempt', () => {
+  /** One fake page: the window it reserves, the messages it receives, and the clock its deadline reads. */
+  function bench(options: {
+    readonly popup?: boolean
+    readonly ticket?: OwnerLoginTicket | undefined
+    readonly start?: () => Promise<OwnerLoginResult<OwnerLoginTicket>>
+    readonly clock?: { at: number }
+  } = {}) {
+    const phases: OwnerLoginPhase[] = []
+    const failures: (string | undefined)[] = []
+    const posted: { readonly message: unknown; readonly origin: string }[] = []
+    const opened: string[] = []
+    const listeners = new Set<(event: MessageEvent) => void>()
+    const intervals = new Set<() => void>()
+    const popup = {
+      closed: false,
+      location: { href: '' },
+      postMessage: (message: unknown, origin: string) => { posted.push({ message, origin }) },
+      close: () => { popup.closed = true },
+    }
+    const page: OwnerLoginPage = {
+      // The flow reserves the window inside the gesture, then navigates it once the ticket lands.
+      open: (url) => {
+        opened.push(url)
+        return options.popup === false ? null : popup
+      },
+      addEventListener: (_type, listener) => { listeners.add(listener) },
+      removeEventListener: (_type, listener) => { listeners.delete(listener) },
+      setInterval: (handler) => { intervals.add(handler); return intervals.size },
+      clearInterval: (id) => { void id; intervals.clear() },
+    }
+    const redeem = vi.fn<() => Promise<OwnerLoginResult<OwnerIdentityStatus>>>(async () => ({
+      ok: true, value: { state: 'verified', relay: ORIGIN },
+    }))
+    const cancel = vi.fn(async () => {})
+    const start = vi.fn(options.start ?? (async () => ({ ok: true as const, value: options.ticket ?? TICKET })))
+    const host: OwnerLoginHost = {
+      start,
+      redeem,
+      cancel,
+    }
+    const attempt = beginOwnerLogin({
+      host,
+      page,
+      ...(options.clock === undefined ? {} : { now: () => options.clock?.at ?? 0 }),
+      report: (phase, failure) => { phases.push(phase); failures.push(failure) },
+    })
+    /** Deliver one window message the way the browser would. */
+    const deliver = (event: { origin: string; source: unknown; data: unknown }): void => {
+      for (const listener of [...listeners]) listener(event as MessageEvent)
+    }
+    return { attempt, host, start, redeem, cancel, phases, failures, posted, opened, popup, page, deliver, intervals }
+  }
+
+  it('opens the ticket\u2019s sign-in, acknowledges the code, and reports what the host read back', async () => {
+    const b = bench()
+    await vi.waitFor(() => { expect(b.phases).toContain('waiting') })
+    // The window is reserved inside the gesture and navigated once the host named the sign-in.
+    expect(b.opened).toEqual([''])
+    expect(b.popup.location.href).toBe(TICKET.authorizeUrl)
+    b.deliver({
+      origin: ORIGIN,
+      source: b.popup,
+      data: { type: OWNER_LOGIN_CODE_TYPE, code: 'one-time-code', state: 's1' },
+    })
+    await vi.waitFor(() => { expect(b.redeem).toHaveBeenCalledWith('one-time-code', 's1') })
+    // The sign-in page closes on this acknowledgement, and it is addressed to the origin the host
+    // bound the transaction to rather than to everything.
+    expect(b.posted).toEqual([{ message: { type: OWNER_LOGIN_ACK_TYPE, state: 's1' }, origin: ORIGIN }])
+    await vi.waitFor(() => { expect(b.phases.at(-1)).toBe('verified') })
+    expect(b.failures.at(-1)).toBeUndefined()
+    // A finished attempt has nothing left to cancel, and saying so changes nothing it already stated.
+    b.attempt.cancel()
+    expect(b.phases.at(-1)).toBe('verified')
+    expect(b.cancel).not.toHaveBeenCalled()
+  })
+
+  it('ignores a code from another origin, another window, or another transaction', async () => {
+    for (const event of [
+      { origin: 'https://evil.example.test', source: 'popup', data: { type: OWNER_LOGIN_CODE_TYPE, code: 'c', state: 's1' } },
+      { origin: ORIGIN, source: 'other', data: { type: OWNER_LOGIN_CODE_TYPE, code: 'c', state: 's1' } },
+      { origin: ORIGIN, source: 'popup', data: { type: OWNER_LOGIN_CODE_TYPE, code: 'c', state: 'stale' } },
+    ] as const) {
+      const b = bench()
+      await vi.waitFor(() => { expect(b.phases).toContain('waiting') })
+      b.deliver({
+        ...event,
+        source: event.source === 'popup' ? b.popup : {},
+      })
+      expect(b.redeem).not.toHaveBeenCalled()
+      expect(b.phases.at(-1)).toBe('waiting')
+      b.attempt.cancel()
+    }
+  })
+
+  it('submits one code once, however many times a sender repeats it', async () => {
+    const b = bench()
+    await vi.waitFor(() => { expect(b.phases).toContain('waiting') })
+    const data = { type: OWNER_LOGIN_CODE_TYPE, code: 'one-time-code', state: 's1' }
+    b.deliver({ origin: ORIGIN, source: b.popup, data })
+    b.deliver({ origin: ORIGIN, source: b.popup, data })
+    await vi.waitFor(() => { expect(b.phases.at(-1)).toBe('verified') })
+    expect(b.redeem).toHaveBeenCalledTimes(1)
+  })
+
+  it('states a cancellation when the owner closes the sign-in window', async () => {
+    const b = bench()
+    await vi.waitFor(() => { expect(b.phases).toContain('waiting') })
+    b.popup.closed = true
+    for (const handler of [...b.intervals]) handler()
+    expect(b.phases.at(-1)).toBe('failed')
+    expect(b.failures.at(-1)).toBe('cancelled')
+    expect(b.redeem).not.toHaveBeenCalled()
+    // A closed sign-in window leaves nothing redeemable: the transaction is dropped on the host.
+    expect(b.cancel).toHaveBeenCalledWith('s1')
+  })
+
+  it('ends an attempt on the deadline the host set for its transaction', async () => {
+    const clock = { at: 0 }
+    const b = bench({
+      clock,
+      ticket: { ...TICKET, expiresAt: '2026-09-13T00:00:05Z' },
+    })
+    await vi.waitFor(() => { expect(b.phases).toContain('waiting') })
+    // A wrong state is not an expiry: the attempt keeps waiting while its transaction lives.
+    b.deliver({
+      origin: ORIGIN,
+      source: b.popup,
+      data: { type: OWNER_LOGIN_CODE_TYPE, code: 'c', state: 'stale' },
+    })
+    for (const handler of [...b.intervals]) handler()
+    expect(b.phases.at(-1)).toBe('waiting')
+    // The host's own deadline is what ends it, and the transaction is dropped rather than left.
+    clock.at = Date.parse('2026-09-13T00:00:06Z')
+    for (const handler of [...b.intervals]) handler()
+    expect(b.phases.at(-1)).toBe('failed')
+    expect(b.failures.at(-1)).toBe('expired')
+    expect(b.redeem).not.toHaveBeenCalled()
+    expect(b.cancel).toHaveBeenCalledWith('s1')
+  })
+
+  it('drops a ticket that arrives after the attempt was cancelled', async () => {
+    let deliverTicket: ((result: OwnerLoginResult<OwnerLoginTicket>) => void) | undefined
+    const b = bench({ start: () => new Promise((resolve) => { deliverTicket = resolve }) })
+    expect(b.phases).toEqual(['opening'])
+    b.attempt.cancel()
+    expect(b.failures.at(-1)).toBe('cancelled')
+    deliverTicket?.({ ok: true, value: TICKET })
+    await vi.waitFor(() => { expect(b.cancel).toHaveBeenCalledWith('s1') })
+    // Nothing was left redeemable, and this page never opened or submitted anything.
+    expect(b.opened).toEqual([''])
+    expect(b.redeem).not.toHaveBeenCalled()
+  })
+
+  it('states the reason a host refused the code with', async () => {
+    const b = bench()
+    b.redeem.mockResolvedValueOnce({ ok: false, reason: 'replayed' })
+    await vi.waitFor(() => { expect(b.phases).toContain('waiting') })
+    b.deliver({
+      origin: ORIGIN,
+      source: b.popup,
+      data: { type: OWNER_LOGIN_CODE_TYPE, code: 'one-time-code', state: 's1' },
+    })
+    await vi.waitFor(() => { expect(b.phases.at(-1)).toBe('failed') })
+    expect(b.failures.at(-1)).toBe('replayed')
+  })
+
+  it('signs in on this page when the browser refuses a popup, and cancels what it started', async () => {
+    const blocked = bench({ popup: false })
+    // A refused popup is a named failure, not a silent navigation away from the code this page would
+    // have to receive; nothing was started, so cancelling later changes nothing.
+    expect(blocked.phases).toEqual(['failed'])
+    expect(blocked.failures).toEqual(['blocked'])
+    expect(blocked.start).not.toHaveBeenCalled()
+    expect(blocked.redeem).not.toHaveBeenCalled()
+    expect(blocked.cancel).not.toHaveBeenCalled()
+    blocked.attempt.cancel()
+    expect(blocked.phases).toEqual(['failed'])
+
+    const b = bench()
+    await vi.waitFor(() => { expect(b.phases).toContain('waiting') })
+    b.attempt.cancel()
+    expect(b.phases.at(-1)).toBe('failed')
+    expect(b.failures.at(-1)).toBe('cancelled')
+    expect(b.popup.closed).toBe(true)
+    expect(b.cancel).toHaveBeenCalledWith('s1')
+  })
+
+  it('drops the transaction and closes the window when the reserved one cannot be navigated', async () => {
+    const b = bench()
+    // A window that refuses the sign-in address is a window no code can arrive in; unlike a window the
+    // browser refused to open, this attempt already minted a transaction, so it is dropped here.
+    Object.defineProperty(b.popup.location, 'href', {
+      configurable: true,
+      set() { throw new Error('navigation refused') },
+    })
+    await vi.waitFor(() => { expect(b.phases.at(-1)).toBe('failed') })
+    expect(b.failures.at(-1)).toBe('blocked')
+    expect(b.start).toHaveBeenCalledTimes(1)
+    expect(b.redeem).not.toHaveBeenCalled()
+    expect(b.cancel).toHaveBeenCalledWith('s1')
+    expect(b.popup.closed).toBe(true)
+  })
+
+  it('closes the window and states why when the host refuses to mint a transaction', async () => {
+    const b = bench({ start: async () => ({ ok: false, reason: 'unavailable' }) })
+    await vi.waitFor(() => { expect(b.phases.at(-1)).toBe('failed') })
+    expect(b.failures.at(-1)).toBe('unavailable')
+    expect(b.popup.closed).toBe(true)
+    // Nothing was minted, so there is nothing to drop on the host.
+    expect(b.cancel).not.toHaveBeenCalled()
+  })
+
+  it('drops the ticket of a window that closed while the host was minting it', async () => {
+    let minted: ((result: OwnerLoginResult<OwnerLoginTicket>) => void) | undefined
+    const b = bench({ start: () => new Promise((resolve) => { minted = resolve }) })
+    b.popup.closed = true
+    minted?.({ ok: true, value: TICKET })
+    await vi.waitFor(() => { expect(b.phases.at(-1)).toBe('failed') })
+    expect(b.failures.at(-1)).toBe('cancelled')
+    expect(b.cancel).toHaveBeenCalledWith('s1')
+    // The window was gone before the sign-in could be navigated to, so nothing opened or submitted.
+    expect(b.popup.location.href).toBe('')
+    expect(b.redeem).not.toHaveBeenCalled()
+  })
+
+  it('reads its own clock for a deadline when the caller names none', async () => {
+    const b = bench({ ticket: { ...TICKET, expiresAt: '2099-01-01T00:00:00Z' } })
+    await vi.waitFor(() => { expect(b.phases).toContain('waiting') })
+    for (const handler of [...b.intervals]) handler()
+    // A deadline in the future does not end the attempt, and the page's own clock said so.
+    expect(b.phases.at(-1)).toBe('waiting')
+    expect(b.cancel).not.toHaveBeenCalled()
+  })
+
+  it('ends one attempt once even when its timer fires again', async () => {
+    const b = bench()
+    await vi.waitFor(() => { expect(b.phases).toContain('waiting') })
+    const handler = [...b.intervals][0]
+    if (handler === undefined) throw new Error('the attempt armed no timer')
+    b.popup.closed = true
+    handler()
+    handler()
+    expect(b.phases.filter(phase => phase === 'failed')).toHaveLength(1)
+    // The timer drops the same transaction again before the finished attempt ignores it; both drops
+    // name the one state, and the attempt itself reports once.
+    expect(b.cancel).toHaveBeenCalledTimes(2)
+  })
+
+  it('never calls an identity the host did not verify a completed sign-in', async () => {
+    const b = bench()
+    b.redeem.mockResolvedValueOnce({ ok: true, value: { state: 'unverified', relay: ORIGIN } })
+    await vi.waitFor(() => { expect(b.phases).toContain('waiting') })
+    b.deliver({
+      origin: ORIGIN,
+      source: b.popup,
+      data: { type: OWNER_LOGIN_CODE_TYPE, code: 'one-time-code', state: 's1' },
+    })
+    await vi.waitFor(() => { expect(b.phases.at(-1)).toBe('failed') })
+    expect(b.failures.at(-1)).toBe('failed')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/owner-persistence.spec.ts b/packages/experimental/liveshare/tests/owner-persistence.spec.ts
new file mode 100644
index 0000000000..5153dda72a
--- /dev/null
+++ b/packages/experimental/liveshare/tests/owner-persistence.spec.ts
@@ -0,0 +1,231 @@
+/**
+ * The owner state file: what a restart restores, and what an unreadable file refuses to restore.
+ *
+ * Every case here writes a real file: the loader's job is deciding whether a document on disk may be
+ * trusted, so a hand-built value would test the validator against itself.
+ */
+
+import { mkdtempSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished } from 'vitest'
+import { loadOwnerState, storedAccessMode, writeOwnerState } from '../src/host/owner-persistence.ts'
+import type { OwnerShare } from '../src/host/owner-types.ts'
+
+/** One private directory whose file this spec owns. */
+function file(): string {
+  const dir = mkdtempSync(join(tmpdir(), 'liveshare-owner-state-'))
+  onTestFinished(() => { rmSync(dir, { recursive: true, force: true }) })
+  return join(dir, 'owner-state.json')
+}
+
+/** One persisted share with every optional fact stated. */
+const share: OwnerShare = {
+  shareId: 'share-one',
+  sessionId: 'session-one',
+  sessionTitle: 'Review the migration',
+  accessMode: 'selected',
+  link: 'https://relay.example/?shareId=share-one',
+  relay: 'https://relay.example/',
+  gatewayToken: 'gateway-token',
+  allowedSubjectIds: ['feishu:tenant-a:ou_reader'],
+  access: {
+    mode: 'approval',
+    selected: [{ providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_reader', identityKey: 'feishu:tenant-a:ou_reader' }],
+    deploymentAllowedSubjectIds: [],
+    shareAllowedSubjectIds: ['feishu:tenant-a:ou_reader'],
+    broadenedByDeploymentSubjects: false,
+    identityKeyAcl: true,
+  },
+  revision: 1,
+  createdAt: '2026-10-01T00:00:00.000Z',
+  expiresAt: '2026-11-01T00:00:00.000Z',
+  allowsFork: true,
+  sessionMode: 'write',
+  viewerCapabilities: [{ plugin: 'ui-chat', readable: ['session/list'], writable: [] }],
+  online: false,
+}
+
+describe('owner state round trip', () => {
+  it('restores every stored fact, including the Relay rows the host still owes a deletion', async () => {
+    const path = file()
+    await writeOwnerState(
+      path,
+      'https://relay.example/',
+      'instance-one',
+      new Map([[share.shareId, share]]),
+      new Map([['share-two', { relay: 'https://relay.example/', shareId: 'share-two', gatewayToken: 'token-two' }]]),
+    )
+
+    const loaded = loadOwnerState(path)
+
+    expect(loaded.instanceId).toBe('instance-one')
+    expect(loaded.relayUrl).toBe('https://relay.example')
+    expect([...loaded.pendingRemovals]).toEqual([
+      ['share-two', { relay: 'https://relay.example', shareId: 'share-two', gatewayToken: 'token-two' }],
+    ])
+    expect(loaded.shares.get('share-one')).toMatchObject({
+      shareId: 'share-one',
+      sessionId: 'session-one',
+      // The retired `approval` spelling reads back as the mode this build uses.
+      accessMode: 'selected',
+      link: 'https://relay.example/?shareId=share-one',
+      relay: 'https://relay.example',
+      allowedSubjectIds: ['feishu:tenant-a:ou_reader'],
+      expiresAt: '2026-11-01T00:00:00.000Z',
+      allowsFork: true,
+      sessionMode: 'write',
+      viewerCapabilities: [{ plugin: 'ui-chat', readable: ['session/list'], writable: [] }],
+      revision: 1,
+      online: false,
+    })
+    expect(loaded.shares.get('share-one')?.access?.mode).toBe('selected')
+  })
+
+  it('mints a fresh instance and stores nothing when the host has never written its state', () => {
+    const loaded = loadOwnerState(file())
+
+    expect(loaded.instanceId).not.toBe('')
+    expect(loaded.relayUrl).toBeUndefined()
+    expect(loaded.shares.size).toBe(0)
+    expect(loaded.pendingRemovals.size).toBe(0)
+  })
+
+  it('reads a stored record without its own tier as the view tier', async () => {
+    const path = file()
+    writeFileSync(path, JSON.stringify({
+      shares: [{
+        shareId: 'share-one', sessionId: 'session-one', sessionTitle: 'Review the migration',
+        accessMode: 'approval', relay: 'https://relay.example/', gatewayToken: 'gateway-token',
+        allowedSubjectIds: [], createdAt: 'now',
+      }],
+    }))
+
+    // A file written before the mode was renamed reads back as the current spelling, and without a tier
+    // as the narrowest one; the share's own Relay address is what the record has to carry.
+    const loaded = loadOwnerState(path)
+    expect(loaded.shares.get('share-one')).toMatchObject({
+      relay: 'https://relay.example', accessMode: 'selected', allowsFork: false, sessionMode: 'view',
+    })
+  })
+
+  it('writes a share that states no optional fact as the plain record it is', async () => {
+    const path = file()
+    const { access: _access, expiresAt: _expiresAt, viewerCapabilities: _capabilities, ...minimal } = share
+    await writeOwnerState(path, undefined, 'instance-one', new Map([[minimal.shareId, { ...minimal, allowsFork: false }]]), new Map())
+
+    const loaded = loadOwnerState(path)
+    const restored = loaded.shares.get('share-one')
+    expect(restored).toMatchObject({ allowsFork: false, sessionMode: 'write', relay: 'https://relay.example' })
+    expect(restored?.access).toBeUndefined()
+    expect(restored?.expiresAt).toBeUndefined()
+    expect(restored?.viewerCapabilities).toBeUndefined()
+    // A write with no override and no owed row states neither.
+    expect(loaded.relayUrl).toBeUndefined()
+    expect(loaded.pendingRemovals.size).toBe(0)
+  })
+
+  it('refuses a write the filesystem rejects, and keeps the chain usable for the next write', async () => {
+    const blocked = `${file()}.blocked`
+    // The parent name is a regular file, so the atomic write cannot land.
+    writeFileSync(blocked, 'occupied')
+    const path = join(blocked, 'state.json')
+
+    await expect(writeOwnerState(path, undefined, 'instance-one', new Map(), new Map())).rejects.toBeDefined()
+    // A failed write leaves the per-file chain settled, so the next write runs against it.
+    await expect(writeOwnerState(path, undefined, 'instance-one', new Map(), new Map())).rejects.toBeDefined()
+  })
+})
+
+describe('owner state validation', () => {
+  /** Load one document and answer the failure it raised. */
+  function refusal(document: string): string {
+    const path = file()
+    writeFileSync(path, document)
+    try {
+      loadOwnerState(path)
+      return 'loaded'
+    } catch (error: unknown) {
+      return error instanceof Error ? error.message : String(error)
+    }
+  }
+
+  it('refuses a document it cannot parse or that names no share list', () => {
+    expect(refusal('{ not json')).toContain('invalid owner state file')
+    expect(refusal('[]')).toContain('invalid owner state file')
+    expect(refusal('{}')).toContain('invalid owner state file')
+    expect(refusal('3')).toContain('invalid owner state file')
+  })
+
+  it('refuses a Relay override the Host could not use', () => {
+    expect(refusal(JSON.stringify({ shares: [], relayUrl: 3 }))).toContain('invalid owner state file')
+    expect(refusal(JSON.stringify({ shares: [], relayUrl: '' }))).toContain('invalid owner state file')
+    // An absolute-looking value the Relay rules refuse fails as a binding error, not a document error.
+    expect(refusal(JSON.stringify({ shares: [], relayUrl: 'not a url' }))).toContain('liveshare relayUrl must be an absolute URL')
+  })
+
+  it('refuses a share record that is not one this build can restore', () => {
+    expect(refusal(JSON.stringify({ shares: [3] }))).toContain('invalid owner state file')
+    // A tier this build cannot read, and an access summary that is not one.
+    expect(refusal(JSON.stringify({
+      shares: [{ ...share, accessMode: 'open', sessionMode: 'owner' }],
+    }))).toContain('invalid owner state file')
+    expect(refusal(JSON.stringify({
+      shares: [{ shareId: 'share-one', sessionId: 's', sessionTitle: 't', accessMode: 'open', relay: 'https://relay.example/',
+        gatewayToken: 'g', allowedSubjectIds: [], createdAt: 'now', access: 3 }],
+    }))).toContain('invalid owner state file')
+  })
+
+  it('refuses a stored share that names no Relay address', () => {
+    // This build has no configured address to read such a record against, and no released state file
+    // omits the field, so the document is rejected rather than restored against a guessed address.
+    const { relay: _relay, ...noRelay } = share
+    expect(refusal(JSON.stringify({ shares: [noRelay] }))).toContain('invalid owner state file')
+  })
+
+  it('refuses an entry in the capability list that names no plugin or no endpoint lists', () => {
+    const withCapabilities = (viewerCapabilities: unknown): string => JSON.stringify({
+      shares: [{
+        shareId: 'share-one', sessionId: 's', sessionTitle: 't', accessMode: 'open',
+        relay: 'https://relay.example/', gatewayToken: 'g', allowedSubjectIds: [], createdAt: 'now', viewerCapabilities,
+      }],
+    })
+
+    expect(refusal(withCapabilities(3))).toContain('invalid owner state file')
+    for (const entry of [
+      { plugin: 3, readable: [], writable: [] },
+      { plugin: '', readable: [], writable: [] },
+      { plugin: 'ui-chat', readable: 'session/list', writable: [] },
+      { plugin: 'ui-chat', readable: [3], writable: [] },
+      { plugin: 'ui-chat', readable: [], writable: 'session/prompt' },
+      { plugin: 'ui-chat', readable: [], writable: [3] },
+    ]) {
+      expect(refusal(withCapabilities([entry])), JSON.stringify(entry)).toContain('invalid owner state file')
+    }
+  })
+
+  it('refuses a Relay removal row that could not delete its row', () => {
+    const withRemovals = (pendingRemovals: unknown): string => JSON.stringify({ shares: [], pendingRemovals })
+
+    // A value that is not a list states no owed rows at all, which is the state a file without the
+    // field carries.
+    expect(refusal(withRemovals(3))).toBe('loaded')
+    for (const entry of [
+      3,
+      { relay: 3, shareId: 's', gatewayToken: 'g' },
+      { relay: '', shareId: 's', gatewayToken: 'g' },
+      { relay: 'https://relay.example', shareId: 3, gatewayToken: 'g' },
+      { relay: 'https://relay.example', shareId: '', gatewayToken: 'g' },
+      { relay: 'https://relay.example', shareId: 's', gatewayToken: 3 },
+      { relay: 'https://relay.example', shareId: 's', gatewayToken: '' },
+    ]) {
+      expect(refusal(withRemovals([entry])), JSON.stringify(entry)).toContain('invalid owner state file')
+    }
+  })
+
+  it('reads the retired access-mode spelling as the mode this build uses', () => {
+    expect(storedAccessMode('approval')).toBe('selected')
+    expect(storedAccessMode('open')).toBe('open')
+    expect(storedAccessMode('selected')).toBe('selected')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/owner-share-operations.spec.ts b/packages/experimental/liveshare/tests/owner-share-operations.spec.ts
new file mode 100644
index 0000000000..a13e55e6af
--- /dev/null
+++ b/packages/experimental/liveshare/tests/owner-share-operations.spec.ts
@@ -0,0 +1,715 @@
+/**
+ * Owner share operations against their dependency seams.
+ *
+ * The host integration specs drive the same operations through the assembled plugin; this suite
+ * pins the operation order and refusal paths that only a failing dependency reaches.
+ */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import type { OwnerShare } from '../src/host/owner-types.ts'
+import type { OwnerShareOperations } from '../src/host/share-operations.ts'
+import { createOwnerShareOperations } from '../src/host/owner-share-operations.ts'
+
+const RELAY = 'https://relay.example.test/liveshare'
+
+function storedShare(overrides: Partial<OwnerShare> = {}): OwnerShare {
+  return {
+    shareId: 'share-1',
+    sessionId: 'session-1',
+    sessionTitle: 'Session',
+    accessMode: 'open',
+    link: `${RELAY}/?shareId=share-1`,
+    relay: RELAY,
+    gatewayToken: 'gateway-token',
+    allowedSubjectIds: [],
+    revision: 1,
+    createdAt: '2026-01-01T00:00:00.000Z',
+    allowsFork: false,
+    sessionMode: 'view',
+    online: true,
+    ...overrides,
+  }
+}
+
+interface Harness {
+  readonly operations: OwnerShareOperations
+  readonly ownerShares: Map<string, OwnerShare>
+  readonly pendingRemovals: Map<string, { relay: string; shareId: string; gatewayToken: string }>
+  readonly tunnel: {
+    credentialForRelay: ReturnType<typeof vi.fn>
+    ownerIdentityStatus: ReturnType<typeof vi.fn>
+    waitForShare: ReturnType<typeof vi.fn>
+    send: ReturnType<typeof vi.fn>
+    shareSpec: ReturnType<typeof vi.fn>
+    clearShareExpiry: ReturnType<typeof vi.fn>
+    scheduleShareExpiry: ReturnType<typeof vi.fn>
+    reconcileShareTitles: ReturnType<typeof vi.fn>
+    flushPendingRemovals: ReturnType<typeof vi.fn>
+    deleteRelayRow: ReturnType<typeof vi.fn>
+    armPendingRemovalRetry: ReturnType<typeof vi.fn>
+    factsFor: ReturnType<typeof vi.fn>
+    probeRelayCredentialSupport: ReturnType<typeof vi.fn>
+    probeRelayConnectivity: ReturnType<typeof vi.fn>
+    probeRelayPublish: ReturnType<typeof vi.fn>
+  }
+  readonly relay: { readRelayAuthority: ReturnType<typeof vi.fn> }
+  readonly viewerRead: { closeShare: ReturnType<typeof vi.fn>; cancelPendingCalls: ReturnType<typeof vi.fn> }
+  readonly forks: { revokeShare: ReturnType<typeof vi.fn> }
+  readonly viewerDeclarations: { declaredCapabilities: ReturnType<typeof vi.fn> }
+  readonly persistOwnerState: ReturnType<typeof vi.fn>
+  readonly applySourceAccess: ReturnType<typeof vi.fn>
+  readonly accessChanged: ReturnType<typeof vi.fn>
+  readonly cancelShareTurn: ReturnType<typeof vi.fn>
+  readonly cancelChildTurns: ReturnType<typeof vi.fn>
+  readonly reconcileSourceAccess: ReturnType<typeof vi.fn>
+  readonly selectRelayAddress: ReturnType<typeof vi.fn>
+  readonly bumpRelayRevision: ReturnType<typeof vi.fn>
+  readonly sourceConfined: ReturnType<typeof vi.fn>
+  readonly storedCredential: ReturnType<typeof vi.fn>
+  readonly effectiveRelay: ReturnType<typeof vi.fn>
+}
+
+function harness(): Harness {
+  const ownerShares = new Map<string, OwnerShare>()
+  const pendingRemovals = new Map<string, { relay: string; shareId: string; gatewayToken: string }>()
+  let effective: string | undefined = RELAY
+  const tunnel = {
+    credentialForRelay: vi.fn(() => 'relay-credential'),
+    ownerIdentityStatus: vi.fn((relay: string) => ({ state: 'missing', relay })),
+    waitForShare: vi.fn(async () => ({ ok: true })),
+    send: vi.fn(),
+    shareSpec: vi.fn((share: unknown) => share),
+    clearShareExpiry: vi.fn(),
+    scheduleShareExpiry: vi.fn(),
+    reconcileShareTitles: vi.fn(async () => {}),
+    flushPendingRemovals: vi.fn(async () => {}),
+    deleteRelayRow: vi.fn(async () => true),
+    armPendingRemovalRetry: vi.fn(),
+    factsFor: vi.fn(() => ({})),
+    probeRelayCredentialSupport: vi.fn(async () => {}),
+    probeRelayConnectivity: vi.fn(async () => ({ ok: true, httpReachable: true, blocking: false })),
+    probeRelayPublish: vi.fn(async () => ({ ok: true, blocking: false })),
+  }
+  const relay = { readRelayAuthority: vi.fn(async () => ({ ok: true })) }
+  const viewerRead = { closeShare: vi.fn(), cancelPendingCalls: vi.fn() }
+  const forks = { revokeShare: vi.fn(async () => {}) }
+  const viewerDeclarations = { declaredCapabilities: vi.fn(() => []) }
+  const persistOwnerState = vi.fn(async () => {})
+  const applySourceAccess = vi.fn(async () => {})
+  const accessChanged = vi.fn()
+  const cancelShareTurn = vi.fn()
+  const cancelChildTurns = vi.fn()
+  const reconcileSourceAccess = vi.fn()
+  const selectRelayAddress = vi.fn((override: string | undefined) => { effective = override })
+  const bumpRelayRevision = vi.fn()
+  const sourceConfined = vi.fn(() => true)
+  const storedCredential = vi.fn(() => undefined)
+  const effectiveRelay = vi.fn(() => effective)
+  const operations = createOwnerShareOperations({
+    ownerShares,
+    pendingRemovals,
+    allowedSubjectIds: [],
+    forks,
+    viewerRead,
+    viewerDeclarations,
+    relay,
+    tunnel,
+    effectiveRelay,
+    relayState: () => effective === undefined ? {} : { override: effective, effective },
+    selectRelayAddress,
+    bumpRelayRevision,
+    storedCredential,
+    persistOwnerState,
+    applySourceAccess,
+    sourceConfined,
+    accessChanged,
+    cancelShareTurn,
+    cancelChildTurns,
+    reconcileSourceAccess,
+  } as never)
+  return {
+    operations, ownerShares, pendingRemovals, tunnel, relay, viewerRead, forks, viewerDeclarations,
+    persistOwnerState, applySourceAccess, accessChanged, cancelShareTurn, cancelChildTurns, reconcileSourceAccess,
+    selectRelayAddress, bumpRelayRevision, sourceConfined, storedCredential, effectiveRelay,
+  }
+}
+
+afterEach(() => {
+  vi.unstubAllGlobals()
+  vi.restoreAllMocks()
+})
+
+describe('creating a share', () => {
+  it('registers, stores, persists, and exposes one share', async () => {
+    const h = harness()
+    h.ownerShares.set('kept', storedShare({ shareId: 'kept' }))
+    const now = Date.now()
+    const created = await h.operations.create({
+      sessionId: 'session-1', sessionTitle: 'My Session', accessMode: 'selected', ttlMinutes: 10,
+      allowedSubjectIds: ['alice'], sessionMode: 'write', allowsFork: true,
+    })
+
+    expect(created).toMatchObject({ sessionId: 'session-1', sessionMode: 'write' })
+    expect(created.link).toMatch(/^https:\/\/relay\.example\.test\/liveshare\/\?shareId=/u)
+    const stored = h.ownerShares.get(created.shareId)
+    expect(stored).toMatchObject({
+      sessionId: 'session-1', sessionTitle: 'My Session', accessMode: 'selected', relay: RELAY,
+      allowedSubjectIds: ['alice'], sessionMode: 'write', allowsFork: true, online: true, revision: 1,
+    })
+    expect(Date.parse(stored?.expiresAt ?? '')).toBeGreaterThanOrEqual(now + 10 * 60_000)
+    // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+    expect(h.tunnel.send).toHaveBeenCalledWith({ type: 'add-share', share: expect.objectContaining({ shareId: created.shareId }) })
+    expect(h.tunnel.waitForShare).toHaveBeenCalledWith(created.shareId, 15_000)
+    expect(h.persistOwnerState).toHaveBeenCalledTimes(1)
+    expect(h.tunnel.scheduleShareExpiry).toHaveBeenCalledWith(stored)
+    expect(h.applySourceAccess).toHaveBeenCalledWith(stored, undefined, 'publish')
+    expect(h.ownerShares.has('kept')).toBe(true)
+  })
+
+  it('falls back to the session id and open/view defaults', async () => {
+    const h = harness()
+    const created = await h.operations.create({ sessionId: 'session-2', sessionTitle: '' })
+    const stored = h.ownerShares.get(created.shareId)
+    expect(stored).toMatchObject({ sessionTitle: 'session-2', accessMode: 'open', sessionMode: 'view', allowsFork: false })
+    expect(stored).not.toHaveProperty('expiresAt')
+    expect(stored?.access?.broadenedByDeploymentSubjects).toBe(false)
+  })
+
+  it('refuses a share with no Session id', async () => {
+    const h = harness()
+    await expect(h.operations.create({ sessionId: '' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/missing-session-id' })
+    expect(h.tunnel.send).not.toHaveBeenCalled()
+  })
+
+  it('refuses a Relay that cannot bind owner identity', async () => {
+    const h = harness()
+    h.tunnel.credentialForRelay.mockReturnValue(undefined)
+    h.tunnel.ownerIdentityStatus.mockReturnValue({ state: 'relay-unsupported', relay: RELAY })
+    await expect(h.operations.create({ sessionId: 'session-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/relay-upgrade-required' })
+  })
+
+  it('asks for owner login before it asks the Relay to register', async () => {
+    const h = harness()
+    h.tunnel.credentialForRelay.mockReturnValue(undefined)
+    h.tunnel.ownerIdentityStatus.mockReturnValue({ state: 'missing', relay: RELAY })
+    await expect(h.operations.create({ sessionId: 'session-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/owner-login-required' })
+    expect(h.tunnel.send).not.toHaveBeenCalled()
+  })
+
+  it('refuses lifetimes outside the owner-controlled range', async () => {
+    const h = harness()
+    for (const ttlMinutes of [0, -1, 1.5, 7 * 24 * 60 + 1]) {
+      await expect(h.operations.create({ sessionId: 'session-1', ttlMinutes }))
+        .rejects.toMatchObject({ code: 'liveshareShares/invalid-ttl' })
+    }
+    expect(h.tunnel.send).not.toHaveBeenCalled()
+  })
+
+  it('removes the worker registration when the Relay never settles it', async () => {
+    const h = harness()
+    h.tunnel.waitForShare.mockResolvedValue({ ok: false, error: 'relay down' })
+    await expect(h.operations.create({ sessionId: 'session-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/relay-unavailable', details: { relay: RELAY, reason: 'relay down' } })
+    expect(h.tunnel.send).toHaveBeenLastCalledWith(expect.objectContaining({ type: 'remove-share' }))
+    expect(h.ownerShares.size).toBe(0)
+  })
+
+  it('reports an unexplained settlement failure without a reason field', async () => {
+    const h = harness()
+    h.tunnel.waitForShare.mockResolvedValue({ ok: false })
+    await expect(h.operations.create({ sessionId: 'session-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/relay-unavailable', details: { relay: RELAY } })
+  })
+
+  it('rolls the registration back when the owner state cannot be written', async () => {
+    const h = harness()
+    h.persistOwnerState.mockRejectedValue(new Error('disk full'))
+    await expect(h.operations.create({ sessionId: 'session-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/owner-state-unavailable' })
+    expect(h.ownerShares.size).toBe(0)
+    expect(h.tunnel.clearShareExpiry).toHaveBeenCalled()
+    expect(h.tunnel.send).toHaveBeenLastCalledWith(expect.objectContaining({ type: 'remove-share' }))
+    expect(h.applySourceAccess).not.toHaveBeenCalled()
+  })
+})
+
+describe('listing shares', () => {
+  it('reconciles, flushes, reads each authority, and reports stored fields', async () => {
+    const h = harness()
+    const share = storedShare({
+      access: {
+        mode: 'approval', selected: [], deploymentAllowedSubjectIds: ['dep'], shareAllowedSubjectIds: ['dep'],
+        broadenedByDeploymentSubjects: true, identityKeyAcl: true,
+      },
+      expiresAt: '2030-01-01T00:00:00Z',
+      viewerCapabilities: [{ plugin: 'files', readable: ['files/read'], writable: [] }],
+    })
+    h.ownerShares.set(share.shareId, share)
+    const listed = await h.operations.list()
+    expect(h.tunnel.reconcileShareTitles).toHaveBeenCalledTimes(1)
+    expect(h.tunnel.flushPendingRemovals).toHaveBeenCalledTimes(1)
+    expect(h.relay.readRelayAuthority).toHaveBeenCalledWith(share)
+    expect(listed.shares).toEqual([expect.objectContaining({
+      shareId: 'share-1', expiresAt: '2030-01-01T00:00:00Z',
+      viewerCapabilities: [{ plugin: 'files', readable: ['files/read'], writable: [] }],
+      // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+      access: expect.objectContaining({ mode: 'selected' }),
+    })])
+    expect(h.persistOwnerState).not.toHaveBeenCalled()
+  })
+
+  it('omits optional fields a share does not carry', async () => {
+    const h = harness()
+    h.ownerShares.set('bare', storedShare({ shareId: 'bare' }))
+    const listed = await h.operations.list()
+    expect(listed.shares[0]).not.toHaveProperty('expiresAt')
+    expect(listed.shares[0]).not.toHaveProperty('access')
+    expect(listed.shares[0]?.viewerCapabilities).toEqual([])
+  })
+
+  it('drops a share whose record disappeared while its authority was read', async () => {
+    const h = harness()
+    h.ownerShares.set('gone', storedShare({ shareId: 'gone' }))
+    // oxlint-disable-next-line typescript/no-misused-promises -- typed test doubles and mock calls.
+    h.relay.readRelayAuthority.mockImplementation(async () => {
+      h.ownerShares.delete('gone')
+      return { ok: true }
+    })
+    await expect(h.operations.list()).resolves.toEqual({ shares: [] })
+  })
+
+  it('persists the records Relay authority changed and reports a failed write', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    // oxlint-disable-next-line typescript/no-misused-promises -- typed test doubles and mock calls.
+    h.relay.readRelayAuthority.mockImplementation(async () => {
+      h.ownerShares.set('share-1', storedShare({ sessionTitle: 'Renamed' }))
+      return { ok: true }
+    })
+    await expect(h.operations.list()).resolves.toMatchObject({ shares: [{ sessionTitle: 'Renamed' }] })
+    expect(h.persistOwnerState).toHaveBeenCalledTimes(1)
+
+    h.persistOwnerState.mockRejectedValue(new Error('disk full'))
+    await expect(h.operations.list()).rejects.toMatchObject({ code: 'liveshareShares/owner-state-unavailable' })
+  })
+})
+
+describe('stopping a share', () => {
+  it('revokes every local owner of the share before deleting its Relay row', async () => {
+    const h = harness()
+    const share = storedShare()
+    h.ownerShares.set(share.shareId, share)
+    await expect(h.operations.stop({ shareId: share.shareId })).resolves.toEqual({ ok: true })
+    expect(h.tunnel.send).toHaveBeenCalledWith({ type: 'remove-share', shareId: share.shareId })
+    expect(h.viewerRead.closeShare).toHaveBeenCalledWith(share.shareId)
+    expect(h.cancelShareTurn).toHaveBeenCalledWith(share.shareId)
+    expect(h.cancelChildTurns).toHaveBeenCalledWith(share.shareId)
+    // A Session no share names any more loses its sandbox.
+    expect(h.reconcileSourceAccess).toHaveBeenCalledWith(share.sessionId)
+    expect(h.forks.revokeShare).toHaveBeenCalledWith(share.shareId, expect.any(String))
+    expect(h.ownerShares.has(share.shareId)).toBe(false)
+    expect(h.accessChanged).toHaveBeenCalled()
+    expect(h.tunnel.clearShareExpiry).toHaveBeenCalledWith(share.shareId)
+    expect(h.tunnel.deleteRelayRow).toHaveBeenCalledWith(RELAY, share.shareId, 'gateway-token')
+  })
+
+  it('refuses an unknown share', async () => {
+    const h = harness()
+    await expect(h.operations.stop({ shareId: 'absent' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/share-not-found', details: { shareId: 'absent' } })
+  })
+
+  it('keeps a pending removal when the Relay row cannot be deleted', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    h.tunnel.deleteRelayRow.mockResolvedValue(false)
+    await expect(h.operations.stop({ shareId: 'share-1' })).resolves.toEqual({ ok: true, relay: 'unreachable' })
+    expect(h.pendingRemovals.get('share-1')).toEqual({ relay: RELAY, shareId: 'share-1', gatewayToken: 'gateway-token' })
+    expect(h.persistOwnerState).toHaveBeenCalledTimes(2)
+    expect(h.tunnel.armPendingRemovalRetry).toHaveBeenCalledTimes(1)
+  })
+
+  it('reports a failed write before and after the Relay row decision', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    h.persistOwnerState.mockRejectedValue(new Error('disk full'))
+    await expect(h.operations.stop({ shareId: 'share-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/owner-state-unavailable' })
+    expect(h.tunnel.deleteRelayRow).not.toHaveBeenCalled()
+
+    h.ownerShares.set('share-2', storedShare({ shareId: 'share-2' }))
+    h.persistOwnerState.mockResolvedValueOnce(undefined).mockRejectedValueOnce(new Error('disk full'))
+    h.tunnel.deleteRelayRow.mockResolvedValue(false)
+    await expect(h.operations.stop({ shareId: 'share-2' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/owner-state-unavailable' })
+    expect(h.tunnel.armPendingRemovalRetry).not.toHaveBeenCalled()
+  })
+})
+
+describe('updating share permissions', () => {
+  it('re-registers a changed tier and re-installs the access layer', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare({ sessionMode: 'write' }))
+    await expect(h.operations.updatePermissions({ shareId: 'share-1', sessionMode: 'view', allowsFork: true }))
+      .resolves.toMatchObject({ shareId: 'share-1', sessionMode: 'view', allowsFork: true })
+    expect(h.ownerShares.get('share-1')).toMatchObject({ sessionMode: 'view', allowsFork: true, revision: 2 })
+    expect(h.viewerRead.cancelPendingCalls).toHaveBeenCalledWith('share-1')
+    expect(h.persistOwnerState).toHaveBeenCalledTimes(1)
+    // oxlint-disable-next-line typescript/no-unsafe-member-access, typescript/no-unsafe-return -- typed test doubles and mock calls.
+    expect(h.tunnel.send.mock.calls.map(call => call[0].type)).toEqual(['remove-share', 'add-share'])
+    expect(h.applySourceAccess).toHaveBeenCalledWith(expect.objectContaining({ sessionMode: 'view' }), undefined, 'mode')
+  })
+
+  it('keeps the stored value for a switch the request omits', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare({ sessionMode: 'write', allowsFork: true }))
+    await expect(h.operations.updatePermissions({ shareId: 'share-1', allowsFork: false }))
+      .resolves.toMatchObject({ shareId: 'share-1', sessionMode: 'write', allowsFork: false })
+    expect(h.forks.revokeShare).toHaveBeenCalledWith('share-1', expect.any(String))
+  })
+
+  it('reinstalls a missing layer when the requested permissions are already stored', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    h.sourceConfined.mockReturnValue(false)
+    await expect(h.operations.updatePermissions({ shareId: 'share-1', sessionMode: 'view' }))
+      .resolves.toEqual({ shareId: 'share-1', sessionMode: 'view', allowsFork: false })
+    expect(h.applySourceAccess).toHaveBeenCalledWith(expect.objectContaining({ shareId: 'share-1' }), undefined, 'mode')
+    expect(h.persistOwnerState).not.toHaveBeenCalled()
+    expect(h.tunnel.send).not.toHaveBeenCalled()
+
+    h.sourceConfined.mockReturnValue(true)
+    await h.operations.updatePermissions({ shareId: 'share-1', sessionMode: 'view' })
+    expect(h.applySourceAccess).toHaveBeenCalledTimes(1)
+  })
+
+  it('updates the lifetime without changing the stored link scope', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    await expect(h.operations.updatePermissions({ shareId: 'share-1', ttlMinutes: 10 }))
+      .resolves.toMatchObject({ shareId: 'share-1', sessionMode: 'view', allowsFork: false })
+    const stored = h.ownerShares.get('share-1')
+    expect(stored?.expiresAt).toBeDefined()
+    expect(stored?.accessMode).toBe('open')
+    expect(h.tunnel.scheduleShareExpiry).toHaveBeenCalled()
+    // oxlint-disable-next-line typescript/no-unsafe-member-access, typescript/no-unsafe-return -- typed test doubles and mock calls.
+    expect(h.tunnel.send.mock.calls.map(call => call[0].type)).toEqual(['remove-share', 'add-share'])
+  })
+
+  it('returns the current deadline when the request repeats stored state', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare({ expiresAt: '2026-10-30T00:00:00.000Z' }))
+    h.sourceConfined.mockReturnValue(true)
+    await expect(h.operations.updatePermissions({ shareId: 'share-1', sessionMode: 'view' }))
+      .resolves.toMatchObject({ expiresAt: '2026-10-30T00:00:00.000Z' })
+  })
+
+  it('clears the stored lifetime', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare({ expiresAt: '2026-10-30T00:00:00.000Z' }))
+    await expect(h.operations.updatePermissions({ shareId: 'share-1', ttlMinutes: null }))
+      .resolves.toMatchObject({ shareId: 'share-1', sessionMode: 'view', allowsFork: false })
+    expect(h.ownerShares.get('share-1')?.expiresAt).toBeUndefined()
+  })
+
+  it('refuses an invalid lifetime', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    for (const ttlMinutes of [0, -1, 1.5, 7 * 24 * 60 + 1]) {
+      await expect(h.operations.updatePermissions({ shareId: 'share-1', ttlMinutes }))
+        .rejects.toMatchObject({ code: 'liveshareShares/invalid-ttl' })
+    }
+  })
+
+  it('refuses malformed, incomplete, and unknown updates', async () => {
+    const h = harness()
+    await expect(h.operations.updatePermissions({ shareId: '' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/missing-share-id' })
+    await expect(h.operations.updatePermissions({ shareId: 'share-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/missing-permission' })
+    await expect(h.operations.updatePermissions({ shareId: 'absent', sessionMode: 'view' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/share-not-found' })
+  })
+
+  it('restores the previous record when the write fails', async () => {
+    const h = harness()
+    const share = storedShare()
+    h.ownerShares.set(share.shareId, share)
+    h.persistOwnerState.mockRejectedValue(new Error('disk full'))
+    await expect(h.operations.updatePermissions({ shareId: share.shareId, sessionMode: 'write' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/owner-state-unavailable' })
+    expect(h.ownerShares.get(share.shareId)).toBe(share)
+    expect(h.tunnel.send).not.toHaveBeenCalled()
+  })
+})
+
+describe('setting share capabilities', () => {
+  const offers = [{ plugin: 'files', readable: ['files/read', 'files/list'], writable: ['files/write'] }]
+
+  it('stores the selection plugins offer and reports it', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    h.viewerDeclarations.declaredCapabilities.mockReturnValue(offers)
+    await expect(h.operations.setCapabilities({
+      shareId: 'share-1', capabilities: [{ plugin: 'files', readable: ['files/read'], writable: [] }],
+    })).resolves.toEqual({ shareId: 'share-1', viewerCapabilities: [{ plugin: 'files', readable: ['files/read'], writable: [] }] })
+    expect(h.ownerShares.get('share-1')).toMatchObject({
+      revision: 2, viewerCapabilities: [{ plugin: 'files', readable: ['files/read'], writable: [] }],
+    })
+    expect(h.accessChanged).toHaveBeenCalled()
+  })
+
+  it('clears an omitted selection from the record', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare({ viewerCapabilities: offers as never }))
+    h.viewerDeclarations.declaredCapabilities.mockReturnValue(offers)
+    await expect(h.operations.setCapabilities({ shareId: 'share-1', capabilities: [] }))
+      .resolves.toEqual({ shareId: 'share-1', viewerCapabilities: [] })
+    expect(h.ownerShares.get('share-1')).not.toHaveProperty('viewerCapabilities')
+  })
+
+  it('refuses malformed, unknown, and unoffered selections', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    h.viewerDeclarations.declaredCapabilities.mockReturnValue(offers)
+    await expect(h.operations.setCapabilities({ shareId: '', capabilities: [] }))
+      .rejects.toMatchObject({ code: 'liveshareShares/missing-share-id' })
+    await expect(h.operations.setCapabilities({ shareId: 'absent', capabilities: [] }))
+      .rejects.toMatchObject({ code: 'liveshareShares/share-not-found' })
+    await expect(h.operations.setCapabilities({ shareId: 'share-1', capabilities: 'files' as never }))
+      .rejects.toMatchObject({ code: 'liveshareShares/invalid-capabilities' })
+    await expect(h.operations.setCapabilities({
+      shareId: 'share-1', capabilities: [{ plugin: 'ghost', readable: [], writable: [] }],
+    })).rejects.toMatchObject({ code: 'liveshareShares/unknown-plugin', details: { plugin: 'ghost' } })
+    await expect(h.operations.setCapabilities({
+      shareId: 'share-1', capabilities: [{ plugin: 'files', readable: ['files/absent'], writable: [] }],
+    })).rejects.toMatchObject({
+      code: 'liveshareShares/endpoint-not-offered', details: { plugin: 'files', kind: 'readable', endpoint: 'files/absent' },
+    })
+  })
+
+  it('restores the previous selection when the write fails', async () => {
+    const h = harness()
+    const share = storedShare()
+    h.ownerShares.set(share.shareId, share)
+    h.viewerDeclarations.declaredCapabilities.mockReturnValue(offers)
+    h.persistOwnerState.mockRejectedValue(new Error('disk full'))
+    await expect(h.operations.setCapabilities({
+      shareId: share.shareId, capabilities: [{ plugin: 'files', readable: ['files/read'], writable: [] }],
+    })).rejects.toMatchObject({ code: 'liveshareShares/owner-state-unavailable' })
+    expect(h.ownerShares.get(share.shareId)).toBe(share)
+    expect(h.accessChanged).not.toHaveBeenCalled()
+  })
+})
+
+describe('Relay selection and identity', () => {
+  it('selects a normalized override, bumps the revision, and persists', async () => {
+    const h = harness()
+    await h.operations.setRelay({ relayUrl: '  https://other.example.test/base/  ' })
+    expect(h.selectRelayAddress).toHaveBeenCalledWith('https://other.example.test/base')
+    expect(h.bumpRelayRevision).toHaveBeenCalledTimes(1)
+    expect(h.persistOwnerState).toHaveBeenCalledTimes(1)
+  })
+
+  it('clears the saved address for null or blank input', async () => {
+    const h = harness()
+    await h.operations.setRelay({ relayUrl: null })
+    expect(h.selectRelayAddress).toHaveBeenLastCalledWith(undefined)
+    // Clearing returns the host to no address, which is a change from the one it had.
+    expect(h.bumpRelayRevision).toHaveBeenCalledTimes(1)
+    await h.operations.setRelay({ relayUrl: '   ' })
+    expect(h.selectRelayAddress).toHaveBeenLastCalledWith(undefined)
+    // Nothing was in force any more, so clearing again changes nothing.
+    expect(h.bumpRelayRevision).toHaveBeenCalledTimes(1)
+  })
+
+  it('refuses to publish, ask about an identity, or probe before an address is saved', async () => {
+    const h = harness()
+    await h.operations.setRelay({ relayUrl: null })
+
+    await expect(h.operations.create({ sessionId: 'session-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/relay-url-required' })
+    await expect(h.operations.identity({}))
+      .rejects.toMatchObject({ code: 'liveshareShares/relay-url-required' })
+    await expect(h.operations.testRelay()).resolves.toEqual({
+      ok: false, httpReachable: false, blocking: true, error: 'no Liveshare server address is saved',
+    })
+    await expect(h.operations.testPublish({ sessionId: 'session-1' })).resolves.toEqual({
+      ok: false, blocking: true, error: 'no Liveshare server address is saved',
+    })
+    expect(h.tunnel.send).not.toHaveBeenCalled()
+    expect(h.tunnel.probeRelayConnectivity).not.toHaveBeenCalled()
+    expect(h.tunnel.probeRelayPublish).not.toHaveBeenCalled()
+  })
+
+  it('refuses an unusable address and reports a failed write', async () => {
+    const h = harness()
+    await expect(h.operations.setRelay({ relayUrl: 'not a url' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/invalid-relay-url' })
+    h.persistOwnerState.mockRejectedValue(new Error('disk full'))
+    await expect(h.operations.setRelay({ relayUrl: null }))
+      .rejects.toMatchObject({ code: 'liveshareShares/owner-state-unavailable' })
+  })
+
+  it('probes an unprobed address before reporting identity', async () => {
+    const h = harness()
+    h.tunnel.ownerIdentityStatus.mockReturnValue({ state: 'verified', relay: RELAY, subjectId: 'owner' })
+    await expect(h.operations.identity({})).resolves.toEqual({ state: 'verified', relay: RELAY, subjectId: 'owner' })
+    expect(h.tunnel.probeRelayCredentialSupport).toHaveBeenCalledWith(RELAY)
+
+    h.tunnel.factsFor.mockReturnValue({ supportsCredentials: true })
+    await h.operations.identity({ relay: RELAY })
+    expect(h.tunnel.probeRelayCredentialSupport).toHaveBeenCalledTimes(1)
+  })
+
+  it('re-probes a stale credential so the Relay can extend its horizon', async () => {
+    const h = harness()
+    h.tunnel.factsFor.mockReturnValue({ supportsCredentials: true })
+    h.storedCredential.mockReturnValue({
+      relay: RELAY, credential: 'stale-credential', expiresAt: '2020-01-01T00:00:00.000Z',
+    })
+    h.tunnel.ownerIdentityStatus.mockReturnValue({ state: 'expired', relay: RELAY })
+    await h.operations.identity({ relay: RELAY })
+    expect(h.tunnel.probeRelayCredentialSupport).toHaveBeenCalledWith(RELAY)
+  })
+
+  it('refuses an unusable identity address', async () => {
+    const h = harness()
+    await expect(h.operations.identity({ relay: 'not a url' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/invalid-relay', details: { relay: 'not a url' } })
+  })
+
+  it('reports the live offer list and Relay state', () => {
+    const h = harness()
+    h.viewerDeclarations.declaredCapabilities.mockReturnValue([{ plugin: 'files', readable: ['files/read'], writable: [] }])
+    expect(h.operations.capabilities()).toEqual({ capabilities: [{ plugin: 'files', readable: ['files/read'], writable: [] }] })
+    expect(h.operations.relay()).toEqual({ override: RELAY, effective: RELAY })
+  })
+})
+
+describe('reading the Relay audit trail', () => {
+  const share = storedShare()
+
+  function respond(body: string, init: ResponseInit = {}): void {
+    vi.stubGlobal('fetch', vi.fn(async () => new Response(body, init)))
+  }
+
+  it('forwards the Relay answer with the share identity and token', async () => {
+    const h = harness()
+    h.ownerShares.set(share.shareId, share)
+    respond(JSON.stringify({
+      events: [
+        { id: 'e1', action: 'open', createdAt: '2026-01-01T00:00:00Z', actor: 'alice', detail: { n: 1 } },
+        { id: 'e2', action: 'close', createdAt: '2026-01-01T00:01:00Z' },
+      ],
+    }), { headers: { 'content-type': 'application/json' } })
+    await expect(h.operations.audit({ shareId: share.shareId })).resolves.toEqual({
+      events: [
+        { id: 'e1', action: 'open', createdAt: '2026-01-01T00:00:00Z', actor: 'alice', detail: { n: 1 } },
+        { id: 'e2', action: 'close', createdAt: '2026-01-01T00:01:00Z' },
+      ],
+    })
+    const fetchMock = vi.mocked(fetch)
+    const [url, init] = fetchMock.mock.calls[0] ?? []
+    // oxlint-disable-next-line typescript/no-base-to-string -- typed test doubles and mock calls.
+    expect(String(url)).toBe(`${RELAY}/__liveshare/audit?shareId=share-1`)
+    expect(init?.headers).toEqual({ authorization: 'Bearer gateway-token' })
+  })
+
+  it('refuses an unknown share before reaching the Relay', async () => {
+    const h = harness()
+    const fetchMock = vi.fn()
+    vi.stubGlobal('fetch', fetchMock)
+    await expect(h.operations.audit({ shareId: 'absent' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/share-not-found' })
+    expect(fetchMock).not.toHaveBeenCalled()
+  })
+
+  it('reports a Relay refusal with its status, content type, and body', async () => {
+    const h = harness()
+    h.ownerShares.set(share.shareId, share)
+    respond('{"error":"forbidden"}', { status: 403, headers: { 'content-type': 'text/plain' } })
+    await expect(h.operations.audit({ shareId: share.shareId })).rejects.toMatchObject({
+      code: 'liveshareShares/audit-unavailable',
+      details: { relay: RELAY, status: 403, contentType: 'text/plain', body: '{"error":"forbidden"}' },
+    })
+  })
+
+  it('reports an unavailable audit for a successful answer it cannot parse', async () => {
+    const h = harness()
+    h.ownerShares.set(share.shareId, share)
+    for (const body of [
+      '', 'not json', '{}', '{"events":[{"id":"e1"}]}',
+      // JSON.parse turns an overflowing number into Infinity, which is not a JSON value.
+      '{"events":[{"id":"e1","action":"a","createdAt":"t","detail":{"n":1e999}}]}',
+    ]) {
+      respond(body)
+      await expect(h.operations.audit({ shareId: share.shareId }))
+        .rejects.toMatchObject({ code: 'liveshareShares/audit-unavailable', details: { status: 200 } })
+    }
+    respond('{"events":[{"id":"e1","action":"a","createdAt":"t","detail":{"ok":true}}]}')
+    await expect(h.operations.audit({ shareId: share.shareId })).resolves.toEqual({
+      events: [{ id: 'e1', action: 'a', createdAt: 't', detail: { ok: true } }],
+    })
+  })
+
+  it('falls back to JSON as the media type when the Relay states none', async () => {
+    const h = harness()
+    h.ownerShares.set(share.shareId, share)
+    vi.stubGlobal('fetch', vi.fn(async () => new Response(new TextEncoder().encode('not json'))))
+    await expect(h.operations.audit({ shareId: share.shareId })).rejects.toMatchObject({
+      code: 'liveshareShares/audit-unavailable',
+      details: { status: 200, contentType: 'application/json; charset=utf-8', body: 'not json' },
+    })
+  })
+
+  it('reports the Relay as unavailable when the read throws', async () => {
+    const h = harness()
+    h.ownerShares.set(share.shareId, share)
+    vi.stubGlobal('fetch', vi.fn(async () => { throw new Error('offline') }))
+    await expect(h.operations.audit({ shareId: share.shareId })).rejects.toMatchObject({
+      code: 'liveshareShares/audit-unavailable',
+      details: { status: 502, body: '{"error":"relay-unavailable"}' },
+    })
+  })
+})
+
+describe('Relay checks', () => {
+  it('flushes owed deletions and probes the effective Relay anonymously', async () => {
+    const h = harness()
+    await h.operations.testRelay()
+    expect(h.tunnel.flushPendingRemovals).toHaveBeenCalledTimes(1)
+    expect(h.tunnel.probeRelayConnectivity).toHaveBeenCalledWith(RELAY)
+  })
+
+  it('reports the owner login it still owes before publishing a probe share', async () => {
+    const h = harness()
+    h.tunnel.credentialForRelay.mockReturnValue(undefined)
+    await expect(h.operations.testPublish({ sessionId: 'session-1' })).resolves.toMatchObject({
+      // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+      ok: false, blocking: true, error: expect.stringContaining('no verified owner credential'),
+    })
+    expect(h.tunnel.probeRelayPublish).not.toHaveBeenCalled()
+  })
+
+  it('refuses a publish check with no Session id', async () => {
+    const h = harness()
+    await expect(h.operations.testPublish({ sessionId: '' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/missing-session-id' })
+  })
+
+  it('registers one throwaway share with the real credential and identity row', async () => {
+    const h = harness()
+    h.storedCredential.mockReturnValue({ relay: RELAY, credential: 'owner-credential' })
+    h.tunnel.probeRelayPublish.mockResolvedValue({ ok: true, blocking: false })
+    await expect(h.operations.testPublish({ sessionId: 'session-1' })).resolves.toEqual({ ok: true, blocking: false })
+    expect(h.tunnel.shareSpec).toHaveBeenCalledWith(expect.objectContaining({
+      shareId: '', sessionId: 'session-1', sessionTitle: 'session-1', accessMode: 'open', relay: RELAY,
+      allowedSubjectIds: [], allowsFork: false, sessionMode: 'view',
+    }), { relay: RELAY, credential: 'owner-credential' })
+    expect(h.tunnel.probeRelayPublish).toHaveBeenCalledWith(RELAY, expect.objectContaining({ shareId: '' }))
+  })
+})
diff --git a/packages/experimental/liveshare/tests/owner-shares-double.client.ts b/packages/experimental/liveshare/tests/owner-shares-double.client.ts
new file mode 100644
index 0000000000..6b697ddee3
--- /dev/null
+++ b/packages/experimental/liveshare/tests/owner-shares-double.client.ts
@@ -0,0 +1,134 @@
+/**
+ * Test-owned `liveshareShares` Remote namespace.
+ *
+ * The owner surfaces address every share-management call through the generated namespace, so a spec
+ * scripts this face and reads the calls it recorded instead of stubbing `fetch`. A spec overrides
+ * only the methods its case exercises; every other method resolves as an empty, accepted Host.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/tests/owner-shares-double
+ */
+
+import { RemoteError } from '@deepseek-ai/dsh-client-test-runtime'
+import type { RemoteErrorCode, RemoteErrorDetailsMap, RemoteFailure, RemoteResult } from '@deepseek-ai/dsh-typert-protocol'
+import type { OwnerShares } from '../src/client/owner-shares.ts'
+import type { ShareAccess } from '../src/share-api-types.ts'
+
+/** Relay address the default location and identity answers name. */
+export const DOUBLE_RELAY = 'https://relay.example.test'
+
+/** ACL scope the default created share carries. */
+export const OPEN_ACCESS: ShareAccess = {
+  mode: 'open',
+  selected: [],
+  deploymentAllowedSubjectIds: [],
+  shareAllowedSubjectIds: [],
+  broadenedByDeploymentSubjects: false,
+  identityKeyAcl: true,
+}
+
+/** One accepted Remote answer. */
+export function accepted<T>(value: T): RemoteResult<T> {
+  return { ok: true, value }
+}
+
+/**
+ * One refused Remote answer carrying a Host code.
+ * @param code - `liveshareShares/` failure the operation would throw.
+ * @param details - structured payload the code declares.
+ * @returns The error branch a Remote call resolves to.
+ */
+export function refused<Code extends RemoteErrorCode>(
+  code: Code,
+  details: RemoteErrorDetailsMap[Code],
+): RemoteResult<never> {
+  return { ok: false, error: new RemoteError(code, code, details) as RemoteFailure }
+}
+
+/** One call the double recorded. */
+export interface OwnerSharesCall {
+  /** Remote method the surface called. */
+  readonly method: keyof OwnerShares
+  /** Its one request argument, absent on the methods that take none. */
+  readonly argument?: unknown
+}
+
+/** A scripted namespace plus the calls it recorded. */
+export interface OwnerSharesDouble {
+  /** The face the share surfaces receive. */
+  readonly shares: OwnerShares
+  /** Every call in order, which is what the request assertions read. */
+  readonly calls: readonly OwnerSharesCall[]
+}
+
+/** Methods a spec may script; everything else keeps the accepted default. */
+export type OwnerSharesOverrides = Partial<OwnerShares>
+
+/**
+ * Build one scripted namespace.
+ * @param overrides - Methods this case scripts; the rest answer the accepted default.
+ * @returns The namespace face and its recorded calls.
+ */
+export function ownerSharesDouble(overrides: OwnerSharesOverrides = {}): OwnerSharesDouble {
+  const calls: OwnerSharesCall[] = []
+  const base: OwnerShares = {
+    create: async () => accepted({
+      link: `${DOUBLE_RELAY}/?shareId=created`,
+      shareId: 'created',
+      sessionId: 'session',
+      sessionMode: 'view',
+      access: OPEN_ACCESS,
+    }),
+    list: async () => accepted({ shares: [] }),
+    stop: async () => accepted({ ok: true }),
+    updatePermissions: async request => accepted({
+      shareId: request.shareId,
+      sessionMode: request.sessionMode ?? 'view',
+      allowsFork: request.allowsFork ?? false,
+    }),
+    setCapabilities: async request => accepted({
+      shareId: request.shareId,
+      viewerCapabilities: request.capabilities ?? [],
+    }),
+    capabilities: async () => accepted({ capabilities: [] }),
+    relay: async () => accepted({ override: DOUBLE_RELAY, effective: DOUBLE_RELAY }),
+    setRelay: async request => accepted({ override: request.relayUrl ?? DOUBLE_RELAY, effective: request.relayUrl ?? DOUBLE_RELAY }),
+    identity: async () => accepted({ state: 'verified' as const, relay: DOUBLE_RELAY }),
+    audit: async () => accepted({ events: [] }),
+    testRelay: async () => accepted({ ok: true, httpReachable: true, blocking: false }),
+    testPublish: async () => accepted({ ok: true, blocking: false }),
+    ...overrides,
+  }
+  const record = <T>(method: keyof OwnerShares, argument: unknown, call: () => Promise<T>): Promise<T> => {
+    calls.push(argument === undefined ? { method } : { method, argument })
+    return call()
+  }
+  const shares: OwnerShares = {
+    create: async request => record('create', request, () => base.create(request)),
+    list: async () => record('list', undefined, () => base.list()),
+    stop: async request => record('stop', request, () => base.stop(request)),
+    updatePermissions: async request => record('updatePermissions', request, () => base.updatePermissions(request)),
+    setCapabilities: async request => record('setCapabilities', request, () => base.setCapabilities(request)),
+    capabilities: async () => record('capabilities', undefined, () => base.capabilities()),
+    relay: async () => record('relay', undefined, () => base.relay()),
+    setRelay: async request => record('setRelay', request, () => base.setRelay(request)),
+    identity: async request => record('identity', request, () => base.identity(request)),
+    audit: async request => record('audit', request, () => base.audit(request)),
+    testRelay: async () => record('testRelay', undefined, () => base.testRelay()),
+    testPublish: async request => record('testPublish', request, () => base.testPublish(request)),
+  }
+  return { shares, calls }
+}
+
+/**
+ * Read one recorded call's request.
+ * @param calls - Calls the double recorded.
+ * @param method - Method whose request is read.
+ * @returns The request, or undefined when the surface called no such method.
+ */
+export function requestOf<Method extends keyof OwnerShares>(
+  calls: readonly OwnerSharesCall[],
+  method: Method,
+): Parameters<OwnerShares[Method]>[0] | undefined {
+  const call = calls.find(entry => entry.method === method)
+  return call?.argument as Parameters<OwnerShares[Method]>[0] | undefined
+}
diff --git a/packages/experimental/liveshare/tests/product-dialog-acceptance.client.spec.tsx b/packages/experimental/liveshare/tests/product-dialog-acceptance.client.spec.tsx
new file mode 100644
index 0000000000..9b699f96f0
--- /dev/null
+++ b/packages/experimental/liveshare/tests/product-dialog-acceptance.client.spec.tsx
@@ -0,0 +1,1272 @@
+// @vitest-environment jsdom
+/** Owner-facing feedback and safe defaults, with only the share-management Remote substituted. */
+
+import { act, cleanup, fireEvent, render, screen, within } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type {} from '../src/client/index.ts'
+import { LiveshareShareDialog, type LiveshareShareDialogProps } from '../src/client/ShareDialog.tsx'
+import { en, zh } from '../src/client/locales.ts'
+import css from '../src/client/ShareDialog.module.css'
+import type {
+  CreatedShare, OwnerIdentityStatus, OwnerRelayState, RelayConnectivityView, RelayPublishView, SharePermissions,
+} from '../src/share-api-types.ts'
+import type { RemoteResult } from '@deepseek-ai/dsh-typert-protocol'
+import {
+  accepted, ownerSharesDouble, refused, requestOf, type OwnerSharesDouble, type OwnerSharesOverrides,
+} from './owner-shares-double.client.ts'
+
+afterEach(() => {
+  cleanup()
+  vi.unstubAllGlobals()
+})
+
+const translate: LiveshareShareDialogProps['t'] = (key, params) => {
+  let result: string = (en as Readonly<Record<string, string>>)[key] ?? key
+  for (const [name, value] of Object.entries(params ?? {})) result = result.replace(`{${name}}`, String(value))
+  return result
+}
+const existing = {
+  shareId: 'existing', sessionId: 'session', sessionTitle: 'Acceptance session',
+  link: 'https://relay.example.test/?shareId=existing', createdAt: '2026-09-05T00:00:00Z', online: true,
+  sessionMode: 'view',
+  allowsFork: false,
+  viewerCapabilities: [],
+  access: {
+    mode: 'selected',
+    selected: [{ providerId: 'feishu', tenantId: 'tenant', subjectId: 'viewer' }],
+    deploymentAllowedSubjectIds: ['deployment-viewer'],
+  },
+}
+
+/** The Relay address this fixture's host names. */
+const RELAY = 'https://relay.example.test'
+
+/** How many shares this dialog asked its host to create. */
+function shareCreates(host: OwnerSharesDouble): number {
+  return host.calls.filter(call => call.method === 'create').length
+}
+
+/** The create request the dialog sent, or undefined when it sent none. */
+function shareRequest(host: OwnerSharesDouble) {
+  return requestOf(host.calls, 'create')
+}
+
+/** How many identity reads this dialog sent. */
+function identityReads(host: OwnerSharesDouble): number {
+  return host.calls.filter(call => call.method === 'identity').length
+}
+
+/** How many connectivity checks this dialog sent. */
+function probes(host: OwnerSharesDouble): number {
+  return host.calls.filter(call => call.method === 'testRelay').length
+}
+
+/**
+ * Render the real dialog against a Host whose share-management Remote is scripted.
+ * @param _stopStatus - Retained for the call sites that name it; the Remote decides its own failures.
+ * @param existingShare - Whether the host lists an existing share for this Session.
+ * @param onClose - Close callback.
+ * @param existingItem - The listed record.
+ * @param onManage - Manager opener.
+ * @param identity - What the host reports about the owner.
+ * @param identityPending - A pending identity answer this case resolves itself.
+ * @param shareExtra - Fields overlaid on the create answer.
+ * @param relayExtra - Connectivity and permission answers.
+ * @returns The scripted Remote and the calls it recorded.
+ */
+async function showDialog(
+  _stopStatus = 200,
+  existingShare = true,
+  onClose = () => {},
+  existingItem: Record<string, unknown> = existing,
+  onManage?: () => void,
+  identity: OwnerIdentityStatus | Promise<OwnerIdentityStatus> = {
+    state: 'verified', relay: RELAY, displayName: '许翰翔',
+  },
+  identityPending?: Promise<OwnerIdentityStatus>,
+  shareExtra?: Partial<CreatedShare>,
+  relayExtra?: { readonly connectivity?: RelayConnectivityView; readonly permission?: RelayPublishView },
+): Promise<OwnerSharesDouble> {
+  const host = ownerSharesDouble({
+    list: async () => accepted({ shares: (existingShare ? [existingItem] : []) as never }),
+    identity: async () => accepted(await (identityPending ?? identity)),
+    relay: async () => accepted({ effective: RELAY }),
+    testRelay: async () => accepted(relayExtra?.connectivity ?? { ok: true, httpReachable: true, blocking: false }),
+    testPublish: async () => accepted(relayExtra?.permission ?? { ok: true, blocking: false }),
+    create: async request => accepted({
+      link: existing.link,
+      shareId: 'existing',
+      sessionId: 'session',
+      sessionMode: request.sessionMode ?? 'view',
+      access: {
+        mode: 'open',
+        selected: [],
+        deploymentAllowedSubjectIds: ['deployment-viewer'],
+        shareAllowedSubjectIds: [],
+        broadenedByDeploymentSubjects: false,
+        identityKeyAcl: true,
+      },
+      ...shareExtra,
+    }),
+  })
+  await act(async () => {
+    render(<LiveshareShareDialog
+      sessionId={'session' as SessionId}
+      sessionTitle="Acceptance session"
+      defaultRelay={RELAY}
+      shares={host.shares}
+      onClose={onClose}
+      {...(onManage === undefined ? {} : { onManage })}
+      t={translate}
+    />)
+  })
+  return host
+}
+
+/** Save the address by leaving its field; the dialog has no save button. */
+async function saveAddress(): Promise<void> {
+  await act(async () => { fireEvent.blur(screen.getByRole('textbox', { name: 'Share service address' })) })
+}
+
+/** The selected session permission of the one dialog on screen. */
+function selectedMode(): 'view' | 'write' | undefined {
+  const tablist = screen.queryByRole('tablist', { name: 'Session permission' })
+  const selected = tablist?.querySelector<HTMLElement>('[aria-selected="true"]')
+  if (selected?.textContent === 'Read only') return 'view'
+  if (selected?.textContent === 'Workspace write') return 'write'
+  return undefined
+}
+
+/** The dialog's enabled controls in document order, the list its modal layer wraps Tab through. */
+function enabledFocusables(): HTMLElement[] {
+  const dialog = screen.getByRole('dialog')
+  return Array.from(dialog.querySelectorAll<HTMLElement>(
+    'button:not(:disabled), input:not(:disabled), textarea:not(:disabled), select:not(:disabled), a[href], [tabindex="0"]',
+  )).filter(element => !element.closest('[inert], [hidden]'))
+}
+
+describe('Liveshare dialog product acceptance', () => {
+  /**
+   * Render the real dialog against a host that must verify its owner first, with the sign-in routes
+   * and the Relay's popup substituted.
+   * @param initialIdentity - What the host first reports about the owner.
+   * @returns The fetch double for the sign-in routes, the scripted Remote, the popup, and the ticket.
+   */
+  async function showLoginDialog(
+    initialIdentity: OwnerIdentityStatus = { state: 'unverified', relay: RELAY },
+    options: {
+      /** Leave the browser refusing the popup, as a blocked-window browser does. */
+      readonly noPopup?: boolean
+      /** Deadline the host names for the transaction. */
+      readonly expiresAt?: string
+      /** Answer one redemption POST; the default verifies the owner. */
+      readonly redeem?: (code: string, state: string) => Response | Promise<Response>
+      /** Capture the attempt's polling timer instead of waiting for it. */
+      readonly interceptInterval?: boolean
+    } = {},
+  ) {
+    const intervals: (() => void)[] = []
+    if (options.interceptInterval === true) {
+      vi.stubGlobal('setInterval', (callback: () => void) => { intervals.push(callback); return 0 })
+    }
+    const popup = {
+      closed: false,
+      location: { href: '' },
+      postMessage: vi.fn((_message: unknown, _origin: string) => {}),
+      close: vi.fn(() => { popup.closed = true }),
+    }
+    const open = vi.fn((_url: string, _name: string, _features: string) => options.noPopup === true ? null : popup)
+    vi.stubGlobal('open', open)
+    /** What the host reports about the owner; the redemption is what verifies it. */
+    let identity: OwnerIdentityStatus = initialIdentity
+    const host = ownerSharesDouble({
+      list: async () => accepted({ shares: [] }),
+      relay: async () => accepted({ effective: RELAY }),
+      identity: async () => accepted(identity),
+      testRelay: async () => accepted({ ok: true, httpReachable: true, blocking: false }),
+      testPublish: async () => accepted({ ok: true, blocking: false }),
+    })
+    const fetcher = vi.fn((input: string, _init?: RequestInit) => {
+      if (input === 'api/liveshare.ownerLoginStart') {
+        return Promise.resolve(Response.json({
+          authorizeUrl: 'https://relay.example.test/__liveshare/auth/start?state=s1',
+          state: 's1',
+          messageOrigin: RELAY,
+          expiresAt: options.expiresAt ?? '2099-01-01T00:00:00Z',
+        }))
+      }
+      if (input === 'api/liveshare.ownerLoginRedeem') {
+        if (options.redeem !== undefined) {
+          const body = typeof _init?.body === 'string'
+            ? JSON.parse(_init.body) as { readonly code?: string; readonly state?: string }
+            : {}
+          return Promise.resolve(options.redeem(body.code ?? '', body.state ?? ''))
+        }
+        identity = { state: 'verified', relay: RELAY, displayName: '许翰翔' }
+        return Promise.resolve(Response.json(identity))
+      }
+      if (input === 'api/liveshare.ownerLoginCancel') return Promise.resolve(Response.json({ ok: true }))
+      throw new Error(`Unexpected request: ${input}`)
+    })
+    vi.stubGlobal('fetch', fetcher)
+    await act(async () => {
+      render(<LiveshareShareDialog
+        sessionId={'session' as SessionId}
+        sessionTitle="liveshare-verify-ok check"
+        defaultRelay={RELAY}
+        shares={host.shares}
+        onClose={() => {}}
+        t={translate}
+      />)
+    })
+    /** The body this page submitted to redeem a code, when it submitted one. */
+    const redeemed = (): Record<string, unknown> | undefined => {
+      const call = fetcher.mock.calls.find(([input]) => input === 'api/liveshare.ownerLoginRedeem')
+      const body = call?.[1]?.body
+      return typeof body !== 'string'
+        ? undefined
+        : JSON.parse(body) as Record<string, unknown>
+    }
+    return { fetcher, host, popup, open, redeemed, intervals }
+  }
+
+  /**
+   * Deliver one window message the way the Relay's sign-in page would.
+   * @param options - Where the message says it came from, and what it carries.
+   */
+  function deliverMessage(options: {
+    readonly origin: string
+    readonly source: unknown
+    readonly data: unknown
+  }): void {
+    const event = new MessageEvent('message', { data: options.data, origin: options.origin })
+    Object.defineProperty(event, 'source', { value: options.source })
+    act(() => { window.dispatchEvent(event) })
+  }
+
+  it('[P1] verifies the owner through the Relay popup, and submits only the code it handed back', async () => {
+    const { popup, open, redeemed } = await showLoginDialog()
+    fireEvent.click(screen.getByRole('button', { name: 'Sign in' }))
+    // The window is reserved inside the gesture, then navigated to exactly the sign-in the host named.
+    await screen.findByText('Finish signing in in the window that opened.')
+    expect(open).toHaveBeenCalledWith('', 'liveshare-owner-login', 'popup=yes,width=520,height=720')
+    expect(popup.location.href).toBe('https://relay.example.test/__liveshare/auth/start?state=s1')
+    // A message from another origin and another window is not this attempt's answer: it is dropped,
+    // nothing is submitted, and the dialog keeps waiting.
+    deliverMessage({
+      origin: 'https://evil.example.test',
+      source: popup,
+      data: { type: 'liveshare-auth-code', code: 'stolen', state: 's1' },
+    })
+    deliverMessage({
+      origin: RELAY,
+      source: {},
+      data: { type: 'liveshare-auth-code', code: 'stolen', state: 's1' },
+    })
+    deliverMessage({
+      origin: RELAY,
+      source: popup,
+      data: { type: 'liveshare-auth-code', code: 'stolen', state: 'stale' },
+    })
+    expect(redeemed()).toBeUndefined()
+    expect(screen.getByText('Finish signing in in the window that opened.')).toBeDefined()
+    // The popup's own message for the state the host minted is submitted, with its state, and the
+    // sign-in page is acknowledged on the origin the host bound.
+    deliverMessage({
+      origin: RELAY,
+      source: popup,
+      data: { type: 'liveshare-auth-code', code: 'one-time-code', state: 's1' },
+    })
+    await vi.waitFor(() => { expect(redeemed()).toEqual({ code: 'one-time-code', state: 's1' }) })
+    expect(popup.postMessage).toHaveBeenCalledWith(
+      { type: 'liveshare-auth-ack', state: 's1' }, RELAY,
+    )
+    // What the row states afterwards is the host's own answer, read back rather than assumed from the
+    // popup's message.
+    expect(await screen.findByText('许翰翔')).toBeDefined()
+  })
+
+  it('[P1] lets a verified owner verify again, and never re-issues a credential on its own', async () => {
+    const { fetcher, popup, open } = await showLoginDialog({
+      state: 'verified', relay: RELAY, displayName: '许翰翔',
+    })
+    // A verified owner keeps the credential in force and is not signed in again behind their back.
+    expect(await screen.findByText('许翰翔')).toBeDefined()
+    expect(fetcher.mock.calls.some(([input]) => input === 'api/liveshare.ownerLoginStart')).toBe(false)
+    fireEvent.click(screen.getByRole('button', { name: 'Sign in again' }))
+    // The same transaction an unverified owner gets, and the row still states the identity in force
+    // until the host redeems the new credential.
+    await screen.findByText('Finish signing in in the window that opened.')
+    expect(open).toHaveBeenCalledOnce()
+    expect(popup.location.href).toBe('https://relay.example.test/__liveshare/auth/start?state=s1')
+    expect(screen.getByText('许翰翔')).toBeDefined()
+  })
+
+  it('states a verification window the browser refused to open', async () => {
+    const { open } = await showLoginDialog(undefined, { noPopup: true })
+    fireEvent.click(screen.getByRole('button', { name: 'Sign in' }))
+
+    expect(await screen.findByRole('alert')).toHaveProperty(
+      'textContent', en['dialog.identity.loginBlocked'],
+    )
+    expect(open).toHaveBeenCalledOnce()
+  })
+
+  it.each([
+    ['mismatch', 'dialog.identity.loginMismatch', () => new Response(
+      JSON.stringify({ error: 'owner-login-mismatch' }), { status: 403 })],
+    ['replayed', 'dialog.identity.loginReplayed', () => new Response(
+      JSON.stringify({ error: 'owner-login-replayed' }), { status: 409 })],
+    ['failed', 'dialog.identity.loginFailed', () => Response.json({ state: 'unverified', relay: RELAY })],
+    ['unavailable', 'dialog.identity.loginUnavailable', () => Promise.reject(new Error('offline'))],
+  ] as const)('states a %s verification answer', async (_name, copy, redeem) => {
+    const { popup } = await showLoginDialog(undefined, { redeem })
+    fireEvent.click(screen.getByRole('button', { name: 'Sign in' }))
+    await screen.findByText(en['dialog.identity.loginWaiting'])
+    deliverMessage({
+      origin: RELAY,
+      source: popup,
+      data: { type: 'liveshare-auth-code', code: 'one-time-code', state: 's1' },
+    })
+
+    expect(await screen.findByText(en[copy])).toBeDefined()
+  })
+
+  it('states a verification the owner cancelled, and one whose transaction expired', async () => {
+    const cancelled = await showLoginDialog(undefined, { interceptInterval: true })
+    fireEvent.click(screen.getByRole('button', { name: 'Sign in' }))
+    await screen.findByText(en['dialog.identity.loginWaiting'])
+    cancelled.popup.closed = true
+    for (const fire of cancelled.intervals) fire()
+    expect(await screen.findByText(en['dialog.identity.loginCancelled'])).toBeDefined()
+    cleanup()
+
+    const expired = await showLoginDialog(undefined, {
+      interceptInterval: true,
+      expiresAt: '2000-01-01T00:00:00Z',
+    })
+    fireEvent.click(screen.getByRole('button', { name: 'Sign in' }))
+    await screen.findByText(en['dialog.identity.loginWaiting'])
+    for (const fire of expired.intervals) fire()
+    expect(await screen.findByText(en['dialog.identity.loginExpired'])).toBeDefined()
+  })
+
+  it('[P1] both locales define the same copy and the Chinese flow renders it', async () => {
+    expect(Object.keys(zh).sort()).toEqual(Object.keys(en).sort())
+    const zhTranslate: LiveshareShareDialogProps['t'] = (key, params) => {
+      let result: string = (zh as Readonly<Record<string, string>>)[key] ?? key
+      for (const [name, value] of Object.entries(params ?? {})) result = result.replace(`{${name}}`, String(value))
+      return result
+    }
+    const host = ownerSharesDouble()
+    await act(async () => {
+      render(<LiveshareShareDialog
+        sessionId={'session' as SessionId}
+        sessionTitle="验收会话"
+        defaultRelay={RELAY}
+        shares={host.shares}
+        onClose={() => {}}
+        t={zhTranslate}
+      />)
+    })
+    expect(screen.getByText('分享会话')).toBeDefined()
+    // The dialog states the tier it will grant, not a fixed description of what a share shows.
+    expect(screen.getByText(/^仅可查看：/u)).toBeDefined()
+    expect(document.body.textContent).not.toContain('历史消息、工具输出、文件路径与附件')
+    expect(screen.getByRole('button', { name: '创建分享' })).toBeDefined()
+  })
+
+  it('[P1] opens global share management as a separate owner flow', async () => {
+    const onManage = vi.fn()
+    await showDialog(200, false, () => {}, existing, onManage)
+    fireEvent.click(screen.getByRole('button', { name: 'Manage shares' }))
+    expect(onManage).toHaveBeenCalledOnce()
+  })
+
+  it('[P1] names the Session this dialog shares', async () => {
+    await showDialog(200, false)
+    expect(document.body.textContent).toContain('Acceptance session')
+  })
+
+  it('[P1] offers the session permission and still searches nobody', async () => {
+    const host = await showDialog(200, false)
+    expect(document.body.textContent).not.toContain('Only people I approve')
+    const permission = screen.getByRole('tablist', { name: 'Session permission' })
+    expect(within(permission).getAllByRole('tab').map(tab => tab.textContent))
+      .toEqual(['Read only', 'Workspace write'])
+    expect(screen.getByRole('switch', { name: 'Allow viewers to fork the session' })).toBeDefined()
+    // No share-management call searches people: new shares are organization links.
+    expect(host.calls.some(call => call.method.toLowerCase().includes('search'))).toBe(false)
+  })
+
+  it('[P1] shows the owner avatar with its name, and the name alone without one', async () => {
+    await showDialog(200, false, () => {}, existing, undefined, {
+      state: 'verified',
+      relay: RELAY,
+      displayName: '许翰翔',
+      avatarUrl: 'https://avatar.example.test/owner.png',
+    })
+    expect(await screen.findByText('许翰翔')).toBeDefined()
+    expect(document.querySelector('img')?.getAttribute('src')).toBe('https://avatar.example.test/owner.png')
+
+    cleanup()
+    await showDialog(200, false, () => {}, existing, undefined, {
+      state: 'verified', relay: RELAY, displayName: '许翰翔',
+    })
+    expect(await screen.findByText('许翰翔')).toBeDefined()
+    expect(document.querySelector('img')).toBeNull()
+  })
+
+  it('[P1] states the verified owner identity and its expiry before creating', async () => {
+    await showDialog(200, false, () => {}, existing, undefined, {
+      state: 'verified',
+      relay: RELAY,
+      displayName: '许翰翔',
+      subjectId: 'feishu:tenant:ou_9f2c4d',
+      expiresAt: new Date(Date.now() + 6 * 60 * 60 * 1000).toISOString(),
+      renewed: true,
+    })
+    expect(await screen.findByText('许翰翔')).toBeDefined()
+    // The credential detail is a tooltip on the name rather than a stacked line in the panel.
+    expect(screen.getByText('许翰翔').getAttribute('title')).toContain('Valid until ')
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', false)
+  })
+
+  it('[P1] refuses to create a share on an expired sign-in and points at the login path', async () => {
+    await showDialog(200, false, () => {}, existing, undefined, {
+      state: 'expired', relay: RELAY, subjectId: 'feishu:tenant:ou_9f2c4d',
+    })
+    expect(await screen.findByText('Your sign-in has expired. Sign in again before creating a share.')).toBeDefined()
+    const create = screen.getByRole('button', { name: 'Create share' })
+    expect(create).toHaveProperty('disabled', true)
+    // The disabled action states the same reason the row does, in the identity's own words.
+    expect(create.getAttribute('title')).toBe('Your sign-in has expired. Sign in again before creating a share.')
+    // The control starts the host's own transaction rather than naming a Relay entry from here.
+    expect(screen.getByRole('button', { name: 'Sign in' })).toBeDefined()
+  })
+
+  it('[P1] refuses a status that belongs to another Relay', async () => {
+    await showDialog(200, false, () => {}, existing, undefined, {
+      state: 'verified',
+      relay: 'https://other.example.test',
+      displayName: '许翰翔',
+    })
+    expect(await screen.findByText(
+      'The current sign-in belongs to another Relay address. Sign in again on this address.',
+    )).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', true)
+  })
+
+  it('[P1] labels a verified subject that has no display name from the identity itself', async () => {
+    await showDialog(200, false, () => {}, existing, undefined, {
+      state: 'verified', relay: RELAY, subjectId: 'feishu:tenant:ou_9f2c4d',
+    })
+    expect(await screen.findByText('ou_9f2c4d')).toBeDefined()
+    // The signed-in viewer's own name is not pasted onto the share's owner.
+    expect(document.body.textContent).not.toContain('Shared by')
+  })
+
+  it('states the identity as unread until the answer for the address in force lands', async () => {
+    const pending = Promise.withResolvers<OwnerIdentityStatus>()
+    await showDialog(200, false, () => {}, existing, undefined, undefined, pending.promise)
+    expect(await screen.findByText(
+      'Sign-in status is unavailable right now. Try again later; no share is created before you sign in.',
+    )).toBeDefined()
+    // Nothing may submit on an unread status, and the handler refuses even if the button is reached.
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', true)
+    expect(screen.getByRole('button', { name: 'Retry' })).toBeDefined()
+    // The verified answer replaces it for the same address; the row never kept a status silently.
+    await act(async () => {
+      pending.resolve({ state: 'verified', relay: RELAY, displayName: '许翰翔' })
+    })
+    expect(await screen.findByText('许翰翔')).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', false)
+  })
+
+  it('[P1] asks for a Relay upgrade instead of creating an anonymous share', async () => {
+    await showDialog(200, false, () => {}, existing, undefined, {
+      state: 'relay-unsupported', relay: RELAY,
+    })
+    expect(await screen.findByText(
+      'The Relay at this address does not verify identities yet. Upgrade it before creating a share; this page will not create an anonymous one.',
+    )).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', true)
+    // Verification cannot succeed against a Relay that does not support it, so no such call to action.
+    expect(screen.queryByRole('link', { name: 'Sign in' })).toBeNull()
+  })
+
+  it('[P1] submits a share only under a verified identity', async () => {
+    const verified = await showDialog(200, false)
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Create share' })) })
+    expect(shareCreates(verified)).toBe(1)
+
+    // Every other state refuses in the page as well as in the host: no request leaves the dialog.
+    for (const identity of [
+      { state: 'unknown', relay: RELAY },
+      { state: 'unverified', relay: RELAY },
+      { state: 'relay-unsupported', relay: RELAY },
+    ]) {
+      const host = await showDialog(200, false, () => {}, existing, undefined, identity as never)
+      const create = screen.getByRole('button', { name: 'Create share' })
+      expect(create).toHaveProperty('disabled', true)
+      await act(async () => { fireEvent.click(create) })
+      expect(shareCreates(host)).toBe(0)
+      cleanup()
+    }
+  })
+
+  it('[P1] opens the sign-in the host minted, never this page\'s own address', async () => {
+    history.replaceState(null, '', '/session?shareId=s1&ownerStartupToken=secret#/tab')
+    try {
+      const { open, popup } = await showLoginDialog()
+      fireEvent.click(screen.getByRole('button', { name: 'Sign in' }))
+      await screen.findByText('Finish signing in in the window that opened.')
+      // The window this page reserved carries nothing of its own, and the sign-in it navigates to is
+      // the one the host named: neither this page's address, its parameters, nor an Owner startup
+      // token travels to the Relay.
+      expect(open.mock.calls[0]?.[0]).toBe('')
+      expect(popup.location.href).toBe('https://relay.example.test/__liveshare/auth/start?state=s1')
+      expect(popup.location.href).not.toContain('ownerStartupToken')
+      expect(popup.location.href).not.toContain('secret')
+      expect(popup.location.href).not.toContain('shareId')
+      popup.close()
+    } finally {
+      history.replaceState(null, '', '/')
+    }
+  })
+
+  it('re-reads the host identity when the page is focused again after a login round trip', async () => {
+    const host = await showDialog(200, false)
+    const before = identityReads(host)
+    fireEvent.focus(window)
+    await vi.waitFor(() => { expect(identityReads(host)).toBeGreaterThan(before) })
+  })
+
+  it('creates an open share by default without recipients', async () => {
+    const host = await showDialog(200, false)
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Create share' })) })
+    const payload = shareRequest(host)
+    if (payload === undefined) throw new Error('Expected the share request')
+    expect(payload.sessionMode).toBe('view')
+    for (const gone of ['recipients', 'mode', 'permission']) {
+      expect(payload, gone).not.toHaveProperty(gone)
+    }
+  })
+
+  it('sends the session permission with the share, read-only until the owner widens it', async () => {
+    const host = await showDialog(200, false, () => {}, existing, undefined, undefined, undefined,
+      { sessionMode: 'view' })
+    // The field always travels, so a Host that cannot store it can say so instead of the page dropping
+    // it silently; leaving the selector alone asks for nothing beyond the read-only share.
+    expect(selectedMode()).toBe('view')
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Create share' })) })
+
+    expect(shareRequest(host)?.sessionMode).toBe('view')
+    expect(screen.queryByText(/did not report the session permission/u)).toBeNull()
+  })
+
+  it('states what the Host stored when the owner picks a wider session permission', async () => {
+    cleanup()
+    const granted = await showDialog(200, false, () => {}, existing, undefined, undefined, undefined,
+      { sessionMode: 'write' })
+    await act(async () => {
+      fireEvent.click(screen.getByRole('tab', { name: 'Workspace write' }))
+    })
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Create share' })) })
+    expect(shareRequest(granted)).toMatchObject({ sessionMode: 'write' })
+    expect(screen.queryByText(/did not report the session permission/u)).toBeNull()
+
+    // A Host that stored another tier than the one asked for did not grant it: the dialog says an
+    // upgrade is needed rather than presenting the choice as granted.
+    cleanup()
+    await showDialog(200, false, () => {}, existing, undefined, undefined, undefined,
+      { sessionMode: 'view' })
+    await act(async () => {
+      fireEvent.click(screen.getByRole('tab', { name: 'Workspace write' }))
+    })
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Create share' })) })
+    expect(screen.getByText(/did not report the session permission/u)).toBeDefined()
+  })
+
+  it('[P1] states a refused registration verbatim and withholds creation until it is settled', async () => {
+    const refusal = 'https://relay.example.test: this address did not accept this host\'s owner credential '
+      + '(relay refused registration status=401)'
+    await showDialog(200, false, () => {}, existing, undefined, undefined, undefined, undefined, {
+      permission: { ok: false, blocking: true, error: refusal },
+    })
+
+    // The Host owns the wording and the severity; this page prints both unchanged.
+    expect(await screen.findByText(refusal)).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', true)
+    expect(screen.getByRole('button', { name: 'Create share' }).getAttribute('title')).toBe(refusal)
+    // The next step is on the address row, next to the refusal it answers.
+    expect(screen.getByRole('button', { name: 'Sign in again' })).toBeDefined()
+  })
+
+  it('[P1] keeps creation available when the Relay did not decide the registration', async () => {
+    const transient = 'https://relay.example.test: relay answered registration status=500'
+    const host = await showDialog(200, false, () => {}, existing, undefined, undefined, undefined, undefined, {
+      permission: { ok: false, blocking: false, error: transient },
+    })
+
+    expect(await screen.findByText(transient)).toBeDefined()
+    // A failure the Relay did not decide keeps the ordinary retry, so the share is still creatable.
+    const create = screen.getByRole('button', { name: 'Create share' })
+    expect(create).toHaveProperty('disabled', false)
+    await act(async () => { fireEvent.click(create) })
+    expect(shareCreates(host)).toBe(1)
+  })
+
+  it('[P1] withholds creation and verification while the address does not answer', async () => {
+    const unreachable = 'https://relay.example.test: ENOTFOUND: getaddrinfo ENOTFOUND relay.example.test'
+    await showDialog(200, false, () => {}, existing, undefined, undefined, undefined, undefined, {
+      connectivity: { ok: false, httpReachable: false, blocking: true, error: unreachable },
+    })
+
+    expect(await screen.findByText(unreachable)).toBeDefined()
+    // An address that does not answer cannot be verified on, and its share cannot be created either.
+    expect(screen.getByRole('button', { name: 'Sign in again' })).toHaveProperty('disabled', true)
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', true)
+  })
+
+  it('[P1] describes the chosen tier and nothing else about access', async () => {
+    // The read-only sentence belongs to the view tier, so a wider share must not carry it, and the dialog
+    // states no tier-independent description of what a share shows.
+    await showDialog(200, false)
+    expect(screen.getByText(/Read only: viewers read files/u)).toBeDefined()
+    expect(document.body.textContent).not.toContain('earlier messages, tool output, file paths, and attachments')
+    await act(async () => {
+      fireEvent.click(screen.getByRole('tab', { name: 'Workspace write' }))
+    })
+    expect(screen.getByText(/Workspace write: the viewer works in a bounded writable sandbox/u)).toBeDefined()
+    expect(screen.queryByText(/cannot send messages or run tools/u)).toBeNull()
+  })
+
+  it('[P1] offers only the never-expiring lifetime and omits it from creation', async () => {
+    const host = await showDialog(200, false)
+    expect(screen.queryByText('In 24 hours')).toBeNull()
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Create share' })) })
+    expect(shareRequest(host)).not.toHaveProperty('ttlMinutes')
+  })
+
+  it('restores an existing session share and keeps its link available after clipboard denial', async () => {
+    vi.stubGlobal('navigator', { clipboard: { writeText: vi.fn().mockRejectedValue(new Error('denied')) } })
+    await showDialog()
+    expect(screen.queryByRole('button', { name: 'Create share' })).toBeNull()
+    const primaryCopy = screen.getAllByRole('button', { name: 'Copy link' }).filter(button => button.closest('details') === null)
+    expect(primaryCopy).toHaveLength(1)
+    await act(async () => { fireEvent.click(primaryCopy[0]!) })
+    expect(screen.getByRole('alert').textContent).toContain('copy it manually')
+    expect(screen.getByRole('textbox', { name: 'Share link' })).toHaveProperty('value', existing.link)
+    expect(screen.getByText('Selected people confirmed: 1.')).toBeDefined()
+    // A share that still carries the retired scope keeps it, and says so: nothing widens it to the
+    // open link.
+    expect(screen.getByText('Deployment-authorized identities: 1. Selection is not the only access rule.')).toBeDefined()
+  })
+
+  it('honestly marks a legacy share whose access summary was never persisted', async () => {
+    await showDialog(200, true, () => {}, { ...existing, access: undefined })
+    expect(screen.getByText('Access details for this share are unavailable. Existing permissions are unchanged.')).toBeDefined()
+  })
+
+  it('traps dialog focus and closes candidates before the modal on Escape', async () => {
+    const onClose = vi.fn()
+    await showDialog(200, false, onClose)
+    // Focus lands on the panel's first control: the help affordance beside the title.
+    const help = screen.getByRole('button', { name: /Shares this Session only/u })
+    expect(document.activeElement).toBe(help)
+    const focusable = enabledFocusables()
+    expect(document.activeElement).toBe(focusable[0])
+    fireEvent.keyDown(help, { key: 'Tab', shiftKey: true })
+    expect(document.activeElement).toBe(focusable.at(-1))
+    // The dialog keeps the session permission and nothing that searches people.
+    const permission = screen.getByRole('tablist', { name: 'Session permission' })
+    expect(permission.querySelectorAll('[role="tab"]').length).toBeGreaterThan(0)
+    expect(screen.queryByPlaceholderText('Search colleagues by name')).toBeNull()
+    fireEvent.keyDown(permission, { key: 'Escape' })
+    expect(onClose).toHaveBeenCalledOnce()
+  })
+
+  it('[P1] wraps Tab in both directions and keeps the dialog body scrollable', async () => {
+    await showDialog(200, false)
+    const dialog = screen.getByRole('dialog')
+    expect(dialog.querySelector(`.${css.panel}`)).not.toBeNull()
+    expect(dialog.className).toContain(css.modal)
+
+    const focusable = enabledFocusables()
+    const first = focusable[0]!
+    const last = focusable.at(-1)!
+    expect(document.activeElement).toBe(first)
+
+    last.focus()
+    fireEvent.keyDown(last, { key: 'Tab' })
+    expect(document.activeElement).toBe(first)
+    fireEvent.keyDown(first, { key: 'Tab', shiftKey: true })
+    expect(document.activeElement).toBe(last)
+  })
+
+  it('ignores a repeated create click while the first share is being prepared', async () => {
+    const host = await showDialog(200, false)
+    const create = screen.getByRole('button', { name: 'Create share' })
+    await act(async () => { fireEvent.click(create); fireEvent.click(create) })
+    expect(shareCreates(host)).toBe(1)
+    expect(probes(host)).toBe(1)
+  })
+})
+
+/** One offer a plugin makes to this host's viewers. */
+const OFFERED = [{ plugin: 'mekGit', readable: ['mekGit/getGraph'], writable: ['mekGit/commit'] }]
+
+/** An access record every endpoint of the open link uses. */
+const OPEN_ACCESS = {
+  mode: 'open',
+  selected: [],
+  deploymentAllowedSubjectIds: [],
+  shareAllowedSubjectIds: [],
+  broadenedByDeploymentSubjects: false,
+  identityKeyAcl: true,
+} as const
+
+/**
+ * Render the dialog over a Host whose record-management answers this case scripts.
+ * @param control - Rows the Host lists, the offer it reports, and the methods this case replaces.
+ * @returns The scripted Remote and its recorded calls.
+ */
+async function showControlled(control: {
+  readonly rows?: readonly Record<string, unknown>[]
+  readonly defaultRelay?: string
+  readonly relayEffective?: string
+  readonly identity?: OwnerIdentityStatus
+  readonly onClose?: () => void
+  readonly overrides?: OwnerSharesOverrides
+} = {}): Promise<OwnerSharesDouble> {
+  const effective = control.relayEffective ?? control.defaultRelay ?? RELAY
+  const host = ownerSharesDouble({
+    list: async () => accepted({ shares: (control.rows ?? []) as never }),
+    relay: async () => accepted({ effective }),
+    identity: async () => accepted(control.identity ?? { state: 'verified', relay: effective, displayName: '许翰翔' }),
+    ...control.overrides,
+  })
+  await act(async () => {
+    render(<LiveshareShareDialog
+      sessionId={'session' as SessionId}
+      sessionTitle="Acceptance session"
+      defaultRelay={control.defaultRelay ?? RELAY}
+      shares={host.shares}
+      onClose={control.onClose ?? (() => {})}
+      t={translate}
+    />)
+  })
+  return host
+}
+
+/** The identity a Host reports per Relay address this case saved. */
+function identityFor(relay: string) {
+  return async (request: { readonly relay?: string }) => accepted(
+    request.relay === relay
+      ? { state: 'verified' as const, relay, displayName: '许翰翔' }
+      : { state: 'unverified' as const, relay: request.relay ?? '' },
+  )
+}
+
+describe('Liveshare dialog stored-record branches', () => {
+  it('saves the narrowest endpoint tier as no endpoint at all', async () => {
+    const setCapabilities = vi.fn(async () => accepted({ shareId: 'existing', viewerCapabilities: [] }))
+    await showControlled({
+      rows: [{ ...existing, viewerCapabilities: OFFERED }],
+      overrides: {
+        capabilities: async () => accepted({ capabilities: OFFERED }),
+        setCapabilities,
+      },
+    })
+
+    await act(async () => { fireEvent.click(screen.getByRole('tab', { name: 'Unavailable' })) })
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Save changes' })) })
+    expect(setCapabilities).toHaveBeenCalledWith({ shareId: 'existing', capabilities: [] })
+  })
+
+  it('saves a fork change for a record that names no session permission', async () => {
+    const updatePermissions = vi.fn(async (): Promise<RemoteResult<SharePermissions>> =>
+      accepted({ shareId: 'existing', sessionMode: 'view', allowsFork: true }))
+    const setCapabilities = vi.fn(async () => accepted({ shareId: 'existing', viewerCapabilities: [] }))
+    let calls = 0
+    await showControlled({
+      rows: [{ ...existing, sessionMode: undefined }],
+      overrides: {
+        list: async () => {
+          calls += 1
+          return accepted({ shares: [calls === 1
+            ? { ...existing, sessionMode: undefined, allowsFork: false }
+            : {
+              ...existing, sessionMode: undefined, allowsFork: true,
+              link: 'https://relay.example.test/?shareId=renamed',
+            }] as never })
+        },
+        updatePermissions,
+        setCapabilities,
+      },
+    })
+
+    expect(await screen.findByText(en['dialog.permissions.modeUnsupported'])).toBeDefined()
+    await act(async () => {
+      fireEvent.click(screen.getByRole('switch', { name: 'Allow viewers to fork the session' }))
+    })
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Save changes' })) })
+    // The Host named no permission for this record, so only the field this page holds travels.
+    expect(updatePermissions).toHaveBeenCalledWith({ shareId: 'existing', allowsFork: true })
+    expect(setCapabilities).not.toHaveBeenCalled()
+    // The confirming read names a renamed link; the link this dialog already showed stays.
+    expect(screen.getByRole('textbox', { name: 'Share link' })).toHaveProperty('value', existing.link)
+  })
+
+  it('clears the lifetime of an existing share', async () => {
+    const updatePermissions = vi.fn(async (): Promise<RemoteResult<SharePermissions>> =>
+      accepted({ shareId: 'existing', sessionMode: 'view', allowsFork: false }))
+    await showControlled({
+      rows: [{ ...existing, expiresAt: '2026-10-30T00:00:00.000Z' }],
+      overrides: {
+        updatePermissions,
+        list: async () => accepted({ shares: [{ ...existing, expiresAt: '2026-10-30T00:00:00.000Z' }] as never }),
+      },
+    })
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Never expires' })) })
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Save changes' })) })
+    expect(updatePermissions).toHaveBeenCalledWith({
+      shareId: 'existing', sessionMode: 'view', allowsFork: false, ttlMinutes: null,
+    })
+  })
+
+  it('states a refused permission save and ignores a second click while it runs', async () => {
+    const pending = Promise.withResolvers<RemoteResult<SharePermissions>>()
+    const updatePermissions = vi.fn(() => pending.promise)
+    await showControlled({
+      rows: [existing],
+      overrides: { updatePermissions },
+    })
+
+    await act(async () => {
+      fireEvent.click(screen.getByRole('switch', { name: 'Allow viewers to fork the session' }))
+    })
+    const save = screen.getByRole('button', { name: 'Save changes' })
+    await act(async () => { fireEvent.click(save) })
+    await act(async () => { fireEvent.click(save) })
+    expect(updatePermissions).toHaveBeenCalledTimes(1)
+    pending.resolve(refused('gateway/internal', {}))
+    await act(async () => { await pending.promise })
+    expect(screen.getByRole('alert').textContent).toBe(en['dialog.permissions.failed'])
+  })
+
+  it('states a half-saved permission save and adopts what the Host stored', async () => {
+    let calls = 0
+    const updatePermissions = vi.fn(async (): Promise<RemoteResult<SharePermissions>> =>
+      accepted({ shareId: 'existing', sessionMode: 'view', allowsFork: true }))
+    const setCapabilities = vi.fn(async () => refused('gateway/internal', {}))
+    await showControlled({
+      rows: [{ ...existing, viewerCapabilities: OFFERED }],
+      overrides: {
+        capabilities: async () => accepted({ capabilities: OFFERED }),
+        list: async () => {
+          calls += 1
+          return accepted({ shares: [calls === 1
+            ? { ...existing, viewerCapabilities: OFFERED }
+            : { ...existing, viewerCapabilities: OFFERED, allowsFork: true }] as never })
+        },
+        updatePermissions,
+        setCapabilities,
+      },
+    })
+
+    await act(async () => {
+      fireEvent.click(screen.getByRole('switch', { name: 'Allow viewers to fork the session' }))
+    })
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Save changes' })) })
+    expect(screen.getByRole('alert').textContent).toBe(en['dialog.permissions.partial'])
+    // The permission write landed, and the Host's own record is what the switch states afterwards.
+    expect(screen.getByRole('switch', { name: 'Allow viewers to fork the session' }).getAttribute('aria-checked'))
+      .toBe('true')
+  })
+
+  it('saves without a confirming read the Host refused or could not answer', async () => {
+    for (const answer of [
+      async () => refused('gateway/internal', {}),
+      async () => { throw new Error('host lost') },
+    ]) {
+      let calls = 0
+      await showControlled({
+        rows: [existing],
+        overrides: {
+          updatePermissions: async (): Promise<RemoteResult<SharePermissions>> =>
+            accepted({ shareId: 'existing', sessionMode: 'view', allowsFork: true }),
+          list: async () => {
+            calls += 1
+            return calls === 1 ? accepted({ shares: [existing] as never }) : answer()
+          },
+        },
+      })
+      await act(async () => {
+        fireEvent.click(screen.getByRole('switch', { name: 'Allow viewers to fork the session' }))
+      })
+      await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Save changes' })) })
+      expect(screen.getByText(en['dialog.permissions.saved'])).toBeDefined()
+      expect(screen.queryByRole('alert')).toBeNull()
+      cleanup()
+    }
+  })
+
+  it('keeps its create form when the Host refuses the list', async () => {
+    await showControlled({ overrides: { list: async () => refused('gateway/internal', {}) } })
+
+    // Nothing was listed, and no error is stated: the polling read keeps the last known list.
+    expect(screen.queryByRole('textbox', { name: 'Share link' })).toBeNull()
+    expect(screen.getByRole('button', { name: 'Create share' })).toBeDefined()
+    expect(screen.queryByRole('alert')).toBeNull()
+  })
+
+  it('hides the endpoint control when the Host cannot report its offer', async () => {
+    await showControlled({
+      rows: [existing],
+      overrides: { capabilities: async () => refused('gateway/internal', {}) },
+    })
+
+    expect(screen.queryByRole('tablist', { name: 'Plugin endpoints' })).toBeNull()
+    expect(screen.getByRole('button', { name: 'Save changes' })).toBeDefined()
+  })
+
+  it('states an identity it could not read and retries it on request', async () => {
+    const identity = vi.fn(async () => { throw new Error('identity lost') })
+    await showControlled({ overrides: { identity } })
+
+    expect(await screen.findByText(en['dialog.identity.unknown'])).toBeDefined()
+    const before = identity.mock.calls.length
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Retry' })) })
+    expect(identity.mock.calls.length).toBeGreaterThan(before)
+  })
+
+  it('drops an identity answer that lands after the dialog closed', async () => {
+    const pending = Promise.withResolvers<OwnerIdentityStatus>()
+    const identity = vi.fn(async () => accepted(await pending.promise))
+    await showControlled({ overrides: { identity } })
+    cleanup()
+    await act(async () => { pending.resolve({ state: 'verified', relay: RELAY, displayName: '许翰翔' }) })
+    expect(identity).toHaveBeenCalled()
+  })
+
+  it('ignores a focus while the page is hidden', async () => {
+    const identity = vi.fn(async () => accepted({ state: 'verified' as const, relay: RELAY, displayName: '许翰翔' }))
+    await showControlled({ overrides: { identity } })
+    await vi.waitFor(() => { expect(identity).toHaveBeenCalledTimes(1) })
+    Object.defineProperty(document, 'hidden', { configurable: true, value: true })
+    try {
+      fireEvent.focus(window)
+      await Promise.resolve()
+      expect(identity).toHaveBeenCalledTimes(1)
+    } finally {
+      Object.defineProperty(document, 'hidden', { configurable: true, value: false })
+    }
+  })
+
+  it('states an unreachable Relay and lets the owner test again', async () => {
+    const testRelay = vi.fn(async () => refused('gateway/internal', {}))
+    await showControlled({ overrides: { testRelay } })
+
+    expect(await screen.findByText(en['dialog.hostUnavailable'])).toBeDefined()
+    // Re-saving the address is the retry; there is no separate connectivity action.
+    expect(screen.queryByRole('button', { name: 'Save and check' })).toBeNull()
+  })
+
+  it('states an unreachable Relay with no cause, and one this page could not ask', async () => {
+    await showControlled({
+      overrides: { testRelay: async () => accepted({ ok: false, httpReachable: false, blocking: false }) },
+    })
+    expect(await screen.findByText(en['dialog.testFail'])).toBeDefined()
+    cleanup()
+
+    await showControlled({
+      overrides: { testRelay: async () => { throw new Error('host lost') } },
+    })
+    expect(await screen.findByText(en['dialog.hostUnavailable'])).toBeDefined()
+  })
+
+  it('states a permission check the Host could not answer, and retries it', async () => {
+    const testPublish = vi.fn(async () => refused('gateway/internal', {}))
+    await showControlled({ overrides: { testPublish } })
+
+    expect(await screen.findByText(en['dialog.hostUnavailable'])).toBeDefined()
+    // The permission check follows sign-in automatically; the create action records it in its title.
+    expect(screen.getByRole('button', { name: 'Create share' })).toBeDefined()
+  })
+
+  it('states a refused registration with and without the Host naming a cause', async () => {
+    await showControlled({
+      overrides: { testPublish: async () => accepted({ ok: false, blocking: true }) },
+    })
+    expect(await screen.findByText(en['dialog.permissionFailed'])).toBeDefined()
+    cleanup()
+
+    await showControlled({
+      overrides: { testPublish: async () => accepted({ ok: false, blocking: false }) },
+    })
+    expect(await screen.findByText(en['dialog.testWarn'])).toBeDefined()
+  })
+
+  it('keeps creation available when the permission check could not reach the Host', async () => {
+    await showControlled({
+      overrides: { testPublish: async () => { throw new Error('host lost') } },
+    })
+
+    expect(await screen.findByText(en['dialog.hostUnavailable'])).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', false)
+  })
+
+  it('ignores a second address save while the first is in flight', async () => {
+    const pending = Promise.withResolvers<RemoteResult<OwnerRelayState>>()
+    const setRelay = vi.fn(() => pending.promise)
+    await showControlled({ overrides: { setRelay } })
+
+    fireEvent.change(screen.getByRole('textbox', { name: 'Share service address' }), {
+      target: { value: 'https://relay2.example.test' },
+    })
+    const input = screen.getByRole('textbox', { name: 'Share service address' })
+    await act(async () => { fireEvent.blur(input) })
+    await act(async () => { fireEvent.blur(input) })
+    expect(setRelay).toHaveBeenCalledTimes(1)
+    pending.resolve(accepted({ effective: 'https://relay2.example.test' }))
+    await act(async () => { await pending.promise })
+  })
+
+  it('distinguishes a refused address from an unreachable Host, and survives a lost one', async () => {
+    const cases = [
+      [async () => refused('liveshareShares/invalid-relay-url', {}) as RemoteResult<OwnerRelayState>, en['dialog.relayInvalid']],
+      [async () => refused('gateway/internal', {}) as RemoteResult<OwnerRelayState>, en['dialog.hostUnavailable']],
+      [async () => { throw new Error('host lost') }, en['dialog.hostUnavailable']],
+    ] as const
+    for (const [answer, copy] of cases) {
+      await showControlled({ overrides: { setRelay: answer } })
+      fireEvent.change(screen.getByRole('textbox', { name: 'Share service address' }), {
+        target: { value: 'https://relay2.example.test' },
+      })
+      await saveAddress()
+      expect(screen.getByRole('alert').textContent).toBe(copy)
+      cleanup()
+    }
+  })
+
+  it('saves the address on Enter', async () => {
+    const setRelay = vi.fn(async () => accepted({ effective: RELAY }))
+    await showControlled({ overrides: { setRelay } })
+
+    const input = screen.getByRole('textbox', { name: 'Share service address' })
+    fireEvent.change(input, { target: { value: 'https://relay2.example.test' } })
+    await act(async () => { fireEvent.keyDown(input, { key: 'Enter' }) })
+    expect(setRelay).toHaveBeenCalledWith({ relayUrl: 'https://relay2.example.test' })
+  })
+
+  it('rechecks the address before creating when the Host names one after mount', async () => {
+    // The address the Host names arrives after the dialog mounted, so saving it starts the flow with
+    // the address the render before it held: connectivity stays idle until the create action asks.
+    const host = await showControlled({
+      defaultRelay: '',
+      relayEffective: '',
+      identity: { state: 'unverified', relay: '' },
+      overrides: {
+        relay: async () => accepted({}),
+        setRelay: async () => accepted({ effective: 'https://relay2.example.test' }),
+        identity: identityFor('https://relay2.example.test'),
+        testRelay: async () => refused('gateway/internal', {}),
+      },
+    })
+    fireEvent.change(screen.getByRole('textbox', { name: 'Share service address' }), {
+      target: { value: 'https://relay2.example.test' },
+    })
+    await saveAddress()
+
+    const create = screen.getByRole('button', { name: 'Create share' }) as HTMLButtonElement
+    await vi.waitFor(() => { expect(create.disabled).toBe(false) })
+    await act(async () => { fireEvent.click(create) })
+    // The address did not answer when the action re-checked it, so nothing was created.
+    expect(host.calls.some(call => call.method === 'create')).toBe(false)
+    expect(screen.getByText(en['dialog.hostUnavailable'])).toBeDefined()
+  })
+
+  it('withholds creation when the permission check refuses after the address answers', async () => {
+    const host = await showControlled({
+      defaultRelay: '',
+      relayEffective: '',
+      identity: { state: 'unverified', relay: '' },
+      overrides: {
+        relay: async () => accepted({}),
+        setRelay: async () => accepted({ effective: 'https://relay2.example.test' }),
+        identity: identityFor('https://relay2.example.test'),
+        testPublish: async () => accepted({ ok: false, blocking: true }),
+      },
+    })
+    fireEvent.change(screen.getByRole('textbox', { name: 'Share service address' }), {
+      target: { value: 'https://relay2.example.test' },
+    })
+    await saveAddress()
+    const create = screen.getByRole('button', { name: 'Create share' })
+    await vi.waitFor(() => { expect(create).toHaveProperty('disabled', false) })
+    await act(async () => { fireEvent.click(create) })
+
+    expect(host.calls.some(call => call.method === 'create')).toBe(false)
+    expect(screen.getByText(en['dialog.permissionFailed'])).toBeDefined()
+  })
+
+  it('states a refused create and one the Host could not answer', async () => {
+    for (const create of [
+      async () => refused('gateway/internal', {}),
+      async () => { throw new Error('host lost') },
+    ]) {
+      await showControlled({ overrides: { create } })
+      const button = screen.getByRole('button', { name: 'Create share' })
+      await vi.waitFor(() => { expect(button).toHaveProperty('disabled', false) })
+      await act(async () => { fireEvent.click(button) })
+      expect(screen.getByRole('alert').textContent).toBe(en['dialog.hostUnavailable'])
+      cleanup()
+    }
+  })
+
+  it('adopts a created share whose Host reported no session permission', async () => {
+    await showControlled({
+      overrides: {
+        create: async () => {
+          // A Host that predates the permission field answers without it; the dialog must state that
+          // rather than assume the narrowest tier.
+          const answer: CreatedShare = {
+            link: existing.link, shareId: 'existing', sessionId: 'session', sessionMode: 'view', access: OPEN_ACCESS,
+          }
+          delete (answer as { sessionMode?: CreatedShare['sessionMode'] }).sessionMode
+          return accepted(answer)
+        },
+      },
+    })
+
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Create share' })) })
+    // The Link exists, and the permission field the Host never reported is stated as unset.
+    expect(await screen.findByText(en['dialog.permissions.modeUnsupported'])).toBeDefined()
+  })
+
+  it('does not close the dialog while a create is in flight', async () => {
+    const pending = Promise.withResolvers<RemoteResult<CreatedShare>>()
+    const onClose = vi.fn()
+    await showControlled({ onClose, overrides: { create: () => pending.promise } })
+
+    const create = screen.getByRole('button', { name: 'Create share' })
+    await vi.waitFor(() => { expect(create).toHaveProperty('disabled', false) })
+    await act(async () => { fireEvent.click(create) })
+    fireEvent.keyDown(document, { key: 'Escape' })
+    expect(onClose).not.toHaveBeenCalled()
+    pending.resolve(accepted({
+      link: existing.link, shareId: 'existing', sessionId: 'session', sessionMode: 'view', access: OPEN_ACCESS,
+    }))
+    await act(async () => { await pending.promise })
+  })
+
+  it('states a copied link the clipboard accepted', async () => {
+    vi.stubGlobal('navigator', { clipboard: { writeText: vi.fn().mockResolvedValue(undefined) } })
+    await showControlled({ rows: [existing] })
+
+    const copy = screen.getAllByRole('button', { name: 'Copy link' })
+      .find(button => button.closest('details') === null)
+    if (copy === undefined) throw new Error('the dialog offers no primary copy control')
+    await act(async () => { fireEvent.click(copy) })
+    expect(screen.getByRole('button', { name: 'Copied' })).toBeDefined()
+    expect(screen.queryByRole('alert')).toBeNull()
+  })
+
+  it('adopts the listed link when a created share answered with none', async () => {
+    let calls = 0
+    await showControlled({
+      overrides: {
+        create: async () => accepted({
+          link: '', shareId: 'existing', sessionId: 'session', sessionMode: 'view', access: OPEN_ACCESS,
+        }),
+        list: async () => {
+          calls += 1
+          return accepted({ shares: (calls === 1 ? [] : [{ ...existing }]) as never })
+        },
+      },
+    })
+
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Create share' })) })
+    // The Host's own record supplies the link its create answer left empty.
+    expect(await screen.findByRole('textbox', { name: 'Share link' })).toHaveProperty('value', existing.link)
+  })
+
+  it('keeps the dialog default when the Host refuses to report its Relay', async () => {
+    await showControlled({
+      overrides: { relay: async () => refused('gateway/internal', {}) },
+    })
+
+    expect(screen.queryByRole('alert')).toBeNull()
+    expect(screen.getByRole('button', { name: 'Create share' })).toBeDefined()
+    expect(screen.getByRole('textbox', { name: 'Share service address' })).toHaveProperty('value', RELAY)
+  })
+
+  it('drops a rejected identity answer that lands after the dialog closed', async () => {
+    const pending = Promise.withResolvers<RemoteResult<OwnerIdentityStatus>>()
+    const identity = vi.fn(() => pending.promise)
+    await showControlled({ overrides: { identity } })
+    cleanup()
+    pending.reject(new Error('identity lost'))
+    await act(async () => { await pending.promise.catch(() => undefined) })
+    expect(identity).toHaveBeenCalled()
+  })
+
+  it('states a half-saved permission save even when the re-read names another share', async () => {
+    let calls = 0
+    await showControlled({
+      rows: [{ ...existing, viewerCapabilities: OFFERED }],
+      overrides: {
+        capabilities: async () => accepted({ capabilities: OFFERED }),
+        updatePermissions: async (): Promise<RemoteResult<SharePermissions>> =>
+          accepted({ shareId: 'existing', sessionMode: 'view', allowsFork: true }),
+        setCapabilities: async () => refused('gateway/internal', {}),
+        list: async () => {
+          calls += 1
+          return accepted({ shares: [calls === 1
+            ? { ...existing, viewerCapabilities: OFFERED }
+            : { ...existing, shareId: 'another', viewerCapabilities: OFFERED }] as never })
+        },
+      },
+    })
+
+    await act(async () => {
+      fireEvent.click(screen.getByRole('switch', { name: 'Allow viewers to fork the session' }))
+    })
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Save changes' })) })
+    expect(screen.getByRole('alert').textContent).toBe(en['dialog.permissions.partial'])
+  })
+
+  it('states an expiry without claiming a renewal', async () => {
+    await showControlled({
+      identity: {
+        state: 'verified', relay: RELAY, displayName: '许翰翔',
+        expiresAt: new Date(Date.now() + 3_600_000).toISOString(),
+      },
+    })
+
+    expect(await screen.findByText('许翰翔')).toBeDefined()
+    const title = screen.getByText('许翰翔').getAttribute('title') ?? ''
+    expect(title).toContain('Valid until ')
+    expect(title).not.toContain(en['dialog.identity.renewed'])
+  })
+
+  it('lets the owner choose the fork switch before the share exists', async () => {
+    await showControlled()
+
+    const fork = screen.getByRole('switch', { name: 'Allow viewers to fork the session' })
+    await act(async () => { fireEvent.click(fork) })
+    expect(fork.getAttribute('aria-checked')).toBe('true')
+  })
+
+  it('selects the whole share link when its field is focused', async () => {
+    await showControlled({ rows: [existing] })
+
+    const link = screen.getByRole('textbox', { name: 'Share link' }) as HTMLInputElement
+    fireEvent.focus(link)
+    expect(link.selectionStart).toBe(0)
+    expect(link.selectionEnd).toBe(existing.link.length)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/readonly-fork-ceiling.spec.ts b/packages/experimental/liveshare/tests/readonly-fork-ceiling.spec.ts
new file mode 100644
index 0000000000..64a37dc0b9
--- /dev/null
+++ b/packages/experimental/liveshare/tests/readonly-fork-ceiling.spec.ts
@@ -0,0 +1,43 @@
+/** The ceiling decides per tool use: reads pass, everything that reaches the owner is refused. */
+
+import { describe, expect, it } from 'vitest'
+import { forkToolDecision } from '../src/host/fork-ceiling.ts'
+import { READ_ONLY_FORK_CEILING } from '../src/host/fork-policy.ts'
+
+const child = 'child-1'
+const use = (tool: string, extra: Partial<Parameters<typeof forkToolDecision>[1]> = {}) => ({
+  childSessionId: child,
+  sessionId: child,
+  tool,
+  ...extra,
+})
+
+describe('read-only fork ceiling', () => {
+  it('allows the read tools a bounded workspace read needs', () => {
+    // A ceiling that only refuses is not a working fork: these must pass.
+    for (const tool of READ_ONLY_FORK_CEILING.allowedTools) {
+      expect(forkToolDecision(READ_ONLY_FORK_CEILING, use(tool))).toEqual({ ok: true })
+    }
+  })
+
+  it('refuses anything that could act on the owner machine or session', () => {
+    for (const tool of ['bash', 'write', 'edit', 'settings-write', 'plugin-self-modification', 'subagent']) {
+      expect(forkToolDecision(READ_ONLY_FORK_CEILING, use(tool))).toMatchObject({
+        ok: false,
+        code: 'fork-tool-not-permitted',
+      })
+    }
+  })
+
+  it('refuses another child’s session', () => {
+    expect(forkToolDecision(READ_ONLY_FORK_CEILING, { ...use('read'), sessionId: 'other-child' }))
+      .toMatchObject({ ok: false, code: 'fork-child-mismatch' })
+  })
+
+  it('refuses every use while no ceiling is installed', () => {
+    expect(forkToolDecision(undefined, use('read'))).toMatchObject({
+      ok: false,
+      code: 'fork-ceiling-uninstalled',
+    })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/readonly-fork-cold-child.spec.ts b/packages/experimental/liveshare/tests/readonly-fork-cold-child.spec.ts
new file mode 100644
index 0000000000..5224f687b2
--- /dev/null
+++ b/packages/experimental/liveshare/tests/readonly-fork-cold-child.spec.ts
@@ -0,0 +1,302 @@
+/**
+ * A child created in an earlier process has no installed limit. Its first write must prepare it through
+ * the owner's own service — which is what installs the limit, before the agent is published — and only
+ * then run; a preparation that installs nothing leaves the write refused with nothing dispatched.
+ */
+
+import { mkdtempSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it, onTestFinished } from 'vitest'
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import { createViewerReadService, type ViewerReadDeps } from '../src/host/viewer-read.ts'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import type { ForkShareState } from '../src/host/fork-policy.ts'
+import { readerWriteRefusal, type ViewerAccessFacts } from '../src/host/viewer-access-policy.ts'
+import type { ViewerCallRequest } from '../src/viewer-channel.ts'
+import { readerConnection, type ReaderFetch } from './viewer-read-peers.ts'
+
+const creator = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' }
+const child = 'session-child'
+
+const temporary: string[] = []
+afterEach(() => {
+  for (const directory of temporary.splice(0)) rmSync(directory, { recursive: true, force: true })
+})
+
+const share: ForkShareState = {
+  shareId: 'share-1',
+  sessionId: 'session-shared',
+  sessionMode: 'view',
+  allowsFork: true,
+  viewerAdmitted: true,
+  stopped: false,
+}
+
+/** Every share id names a share of the same Session, so a child can be presented through the wrong one. */
+const publishedShare = (shareId: string): ForkShareState => ({ ...share, shareId })
+
+/**
+ * A reader Connection whose Peers are released when the test ends.
+ * @param fetch - The owner's shared-handler stand-in.
+ * @returns The Connection and the Peers it created.
+ */
+function ownerConnection(fetch: ReaderFetch) {
+  const owner = readerConnection(fetch)
+  onTestFinished(owner.dispose)
+  return owner
+}
+
+/**
+ * The reader's pre-dispatch write check, by this package's `share-viewer` policy rules over the share
+ * state and registry one test uses.
+ * @param forks - Registry holding the test's child.
+ * @param state - Share state as the owner host holds it.
+ * @returns The `writeRefusal` dependency the share host gives the reader.
+ */
+function writeRefusalOver(
+  forks: ForkRegistry,
+  state: (shareId: string) => ForkShareState | undefined,
+): NonNullable<ViewerReadDeps['writeRefusal']> {
+  const facts: ViewerAccessFacts = {
+    share: state,
+    viewerAdmitted: () => true,
+    sourceConfined: () => false,
+    forks,
+    workspaces: () => [],
+    declaredCapabilities: () => [],
+  }
+  return (viewer, action, sessionId, concrete) => readerWriteRefusal(facts, viewer, action, sessionId, concrete)
+}
+
+/** A registry holding one child of the share, recorded as a previous process would leave it. */
+async function registry(revoked: boolean): Promise<ForkRegistry> {
+  const files = mkdtempSync(join(tmpdir(), 'liveshare-cold-child-'))
+  temporary.push(files)
+  const forks = new ForkRegistry(join(files, 'forks.json'))
+  await forks.record({
+    childSessionId: child,
+    shareId: 'share-1',
+    sourceSessionId: 'session-shared',
+    boundary: 3,
+    creator,
+    createdAt: '2026-09-12T00:00:00.000Z',
+    ...(revoked ? { revokedAt: '2026-09-12T01:00:00.000Z' } : {}),
+  })
+  return forks
+}
+
+/** One viewer-read service whose prompt dispatches are recorded. */
+function service(
+  forks: ForkRegistry,
+  prepare?: (childSessionId: string) => Promise<void>,
+  state: (shareId: string) => ForkShareState | undefined = publishedShare,
+) {
+  const dispatched: string[] = []
+  const owner = ownerConnection(async (request) => {
+    dispatched.push(new URL(request.url).pathname)
+    return Response.json({ result: { ok: true, value: {} } })
+  })
+  const read = createViewerReadService({
+    connection: owner.connection,
+    sharedSessionId: () => 'session-shared',
+    forkStateOf: state,
+    forks,
+    writeRefusal: writeRefusalOver(forks, state),
+    ...(prepare === undefined ? {} : { prepareChild: prepare }),
+  })
+  return { read, dispatched }
+}
+
+/** One prompt for the child, as the viewer client sends it: the Connection mints the request identity. */
+function prompt(): ViewerCallRequest {
+  return {
+    op: 'call',
+    path: '/api/session/prompt',
+    body: {
+      type: 'client-request',
+      rpcId: 'rpc-child-prompt',
+      method: 'session/prompt',
+      payload: { args: { request: { sessionId: child } } },
+    },
+  }
+}
+
+describe('cold fork child', () => {
+  it('installs a write-tier share’s child with the bounded write, and a view-tier one without it', async () => {
+    const requests: (boolean | undefined)[] = []
+    for (const sessionMode of ['write', 'view'] as const) {
+      const forks = await registry(false)
+      const owner = ownerConnection(() => Promise.resolve(Response.json({ result: { ok: true, value: { sessionId: child } } })))
+      const read = createViewerReadService({
+        connection: owner.connection,
+        sharedSessionId: () => 'session-shared',
+        forkStateOf: () => ({ ...share, sessionMode }),
+        forks,
+        enforceChild: (_childSessionId, options) => {
+          requests.push(options?.write)
+          return Promise.resolve(() => {})
+        },
+      })
+
+      await read.answer('share-1', {
+        op: 'call',
+        path: '/api/session/fork',
+        body: { type: 'client-request', rpcId: `rpc-${sessionMode}`, method: 'session/fork', payload: { args: { request: { sessionId: 'session-shared', atSeq: 3 } } } },
+      }, creator)
+      read.close()
+    }
+
+    // The write share asked for the bounded write; the read-only fork share did not.
+    expect(requests).toEqual([true, false])
+  })
+
+  it('prepares the child, then runs the write it prepared', async () => {
+    const forks = await registry(false)
+    const { read, dispatched } = service(forks, async (childSessionId) => {
+      // This is what the owner's preparation does through the setup contribution.
+      forks.installEnforcement(childSessionId, { readOnly: true, allowedTools: ['read'], deniedCapabilities: [] })
+    })
+
+    const answer = await read.answer('share-1', prompt(), creator)
+
+    expect(answer.status).toBe(200)
+    expect(dispatched).toEqual(['/api/session/prompt'])
+    read.close()
+  })
+
+  it('refuses with nothing dispatched when preparation installs no limit', async () => {
+    const forks = await registry(false)
+    const { read, dispatched } = service(forks, () => Promise.resolve())
+
+    const answer = await read.answer('share-1', prompt(), creator)
+
+    expect(answer).toMatchObject({ status: 403, body: { error: 'fork-ceiling-uninstalled' } })
+    expect(dispatched).toEqual([])
+    read.close()
+  })
+
+  it('refuses a revoked child without preparing it at all', async () => {
+    const forks = await registry(true)
+    let preparations = 0
+    const { read, dispatched } = service(forks, () => {
+      preparations += 1
+      return Promise.resolve()
+    })
+
+    const answer = await read.answer('share-1', prompt(), creator)
+
+    expect(answer).toMatchObject({ status: 403, body: { error: 'fork-source-revoked' } })
+    expect(preparations).toBe(0)
+    expect(dispatched).toEqual([])
+    read.close()
+  })
+
+  it('dispatches an admitted prompt unchanged, as the reader’s Peer', async () => {
+    const forks = await registry(false)
+    const sent: unknown[] = []
+    const dispatchedAs: PeerScope[] = []
+    const owner = ownerConnection(async (request, peer) => {
+      sent.push(await request.json())
+      dispatchedAs.push(peer)
+      return Response.json({ result: { ok: true, value: {} } })
+    })
+    const read = createViewerReadService({
+      connection: owner.connection,
+      sharedSessionId: () => 'session-shared',
+      forkStateOf: publishedShare,
+      forks,
+      writeRefusal: writeRefusalOver(forks, publishedShare),
+      enforceChild: () => Promise.resolve(() => {}),
+    })
+    // The child is already enforced here: this test is about what the admitted prompt carries.
+    forks.installEnforcement(child, { readOnly: true, allowedTools: ['read'], deniedCapabilities: [] })
+    const request: ViewerCallRequest = {
+      op: 'call',
+      path: '/api/session/prompt',
+      body: {
+        type: 'client-request',
+        rpcId: 'rpc-identity',
+        method: 'session/prompt',
+        payload: { args: { request: { sessionId: child, requestId: 'rpc-identity', mode: 'queue', content: [] } } },
+      },
+    }
+
+    const answer = await read.answer('share-1', request, creator)
+
+    expect(answer.status).toBe(200)
+    // The requester is the Peer the prompt speaks for; the body is exactly what the reader sent.
+    expect(sent).toEqual([request.body])
+    expect(dispatchedAs).toEqual([owner.peers[0]])
+    expect(owner.principalOf(0)).toEqual({
+      kind: 'share-viewer',
+      shareId: 'share-1',
+      actor: { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' },
+    })
+    read.close()
+  })
+
+  it('keeps refusing a child of another viewer without preparing it', async () => {
+    const forks = await registry(false)
+    let preparations = 0
+    const { read } = service(forks, () => {
+      preparations += 1
+      return Promise.resolve()
+    })
+
+    const answer = await read.answer('share-1', prompt(), { ...creator, subjectId: 'ou_other' })
+
+    expect(answer).toMatchObject({ status: 403, body: { error: 'fork-viewer-mismatch' } })
+    expect(preparations).toBe(0)
+    read.close()
+  })
+
+  it('refuses a child presented through another share without preparing it', async () => {
+    // The viewer owns this child, but it was created through share-1 and the request arrives through
+    // share-2: reachability is attribution, so nothing is resumed for it.
+    const forks = await registry(false)
+    let preparations = 0
+    const { read, dispatched } = service(forks, () => {
+      preparations += 1
+      return Promise.resolve()
+    })
+
+    const answer = await read.answer('share-2', prompt(), creator)
+
+    expect(answer).toMatchObject({ status: 403, body: { error: 'fork-unknown-child' } })
+    expect(preparations).toBe(0)
+    expect(dispatched).toEqual([])
+    read.close()
+  })
+
+  it('reports a preparation that failed instead of the generic missing limit', async () => {
+    const forks = await registry(false)
+    const { read, dispatched } = service(forks, () => Promise.reject(new Error('agent activation failed')))
+
+    const answer = await read.answer('share-1', prompt(), creator)
+
+    expect(answer.status).toBe(403)
+    expect((answer.body as { readonly error?: string }).error).toBe('fork-prepare-failed')
+    // The preparation's own reason reaches the caller; the generic code would hide a service that never
+    // answered.
+    expect(JSON.stringify(answer.body)).toContain('agent activation failed')
+    expect(dispatched).toEqual([])
+    read.close()
+  })
+
+  it('refuses a child whose share is no longer published here, without preparing it', async () => {
+    const forks = await registry(false)
+    let preparations = 0
+    const { read, dispatched } = service(forks, () => {
+      preparations += 1
+      return Promise.resolve()
+    }, () => undefined)
+
+    const answer = await read.answer('share-1', prompt(), creator)
+
+    expect(answer).toMatchObject({ status: 403, body: { error: 'share-not-found' } })
+    expect(preparations).toBe(0)
+    expect(dispatched).toEqual([])
+    read.close()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/readonly-fork-enforcement-wiring.spec.ts b/packages/experimental/liveshare/tests/readonly-fork-enforcement-wiring.spec.ts
new file mode 100644
index 0000000000..eabc82477f
--- /dev/null
+++ b/packages/experimental/liveshare/tests/readonly-fork-enforcement-wiring.spec.ts
@@ -0,0 +1,554 @@
+/**
+ * The host's enforcement wiring: service presence, install ordering, and the listener protocol it
+ * registers.
+ *
+ * The contexts and services here are fakes, so this spec proves the wiring's own refusals and the
+ * waterfall contract it presents to the tool runtime. `readonly-fork-tool-execution.spec.ts` drives
+ * the same installer through the real tool runtime, filesystem, and shipped `read`/`write` tools.
+ */
+
+import { mkdtempSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import { createScope } from '@deepseek-ai/dsh-scope'
+import { FsTargetKey, FsVersion, type FsEditOutcome, type FsTarget, type FsWriteOutcome } from '@deepseek-ai/dsh-fs'
+import type { PreToolDecision, ToolDefinition } from '@deepseek-ai/dsh-tools'
+import { SessionId } from '@deepseek-ai/dsh-session'
+import {
+  installForkEnforcement,
+  installForkEnforcementForAgent,
+  installHostForkEnforcement,
+  installSourceSessionAccess,
+  preflightForkChild,
+  type ForkEnforcementFailure,
+  type ForkEnforcementFs,
+  type ForkToolRegistry,
+} from '../src/host/fork-enforcement.ts'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import { SHARED_TOOL_PROFILES } from '../src/host/shared-tools.ts'
+import type { ForkToolExecution } from '../src/host/fork-tool-guard.ts'
+
+const child = 'child-1'
+/** The viewer identity the registry recorded for this child. */
+const viewer = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' } as const
+/** Temp directories this spec allocated, removed after each test. */
+const temporary: string[] = []
+
+afterEach(() => {
+  for (const directory of temporary.splice(0)) rmSync(directory, { recursive: true, force: true })
+})
+const grantedRoot = '/granted'
+/** The child's own scope key, which the guard compares its visible tool definitions against. */
+const childScope = { child }
+/** One definition object, so an unshadowed name compares equal on both sides. */
+const readDefinition: ToolDefinition = {
+  name: 'read',
+  description: 'a fixture read definition',
+  parameters: {},
+  output: { schema: {}, render: () => [] },
+  execute: () => Promise.resolve(undefined),
+}
+
+/** One child context capturing what the wiring registers on it. */
+function childContext() {
+  const captured: {
+    guard?: (execution: ForkToolExecution) => string | undefined
+    preExecute?: (execution: ForkToolExecution, next: () => Promise<PreToolDecision>) => Promise<PreToolDecision>
+    result?: (execution: ForkToolExecution) => void
+    readonly definitions: Map<string, ToolDefinition>
+  } = { definitions: new Map() }
+  const ctx = Object.assign(new Context(), {
+    tools: {
+      guard: (guard: (execution: ForkToolExecution) => string | undefined) => {
+        captured.guard = guard
+        return () => { delete captured.guard }
+      },
+      get: (): ToolDefinition | undefined => readDefinition,
+      register: (definition: ToolDefinition) => {
+        captured.definitions.set(definition.name, definition)
+        return () => { captured.definitions.delete(definition.name) }
+      },
+    },
+    on: (event: string, listener: never) => {
+      if (event === 'tools/pre-execute') captured.preExecute = listener
+      else captured.result = listener
+      return () => {
+        if (event === 'tools/pre-execute') delete captured.preExecute
+        else delete captured.result
+      }
+    },
+  })
+  return { captured, ctx }
+}
+
+/** A registry that already recorded one child of one share. */
+async function registry(): Promise<ForkRegistry> {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-enforce-'))
+  temporary.push(directory)
+  const forks = new ForkRegistry(join(directory, 'forks.json'))
+  await forks.record({
+    childSessionId: child,
+    shareId: 'share-1',
+    sourceSessionId: 'session-1',
+    boundary: 5,
+    creator: viewer,
+    createdAt: '2026-09-12T00:00:00.000Z',
+  })
+  return forks
+}
+
+/** The host's own argument reader: the shipped read tool names its path `file_path`. */
+function describeTool(execution: ForkToolExecution) {
+  const args = execution.arguments
+  const path = typeof args === 'object' && args !== null && 'file_path' in args
+    ? (args as { readonly file_path?: unknown }).file_path
+    : undefined
+  return typeof path === 'string'
+    ? { paths: [path], noFileEffect: false }
+    : { paths: undefined, noFileEffect: false }
+}
+
+/** A stand-in target for the fake provider; only `contains` reads it. */
+const pathOf = (target: FsTarget): string => target.displayPath
+
+/** A host filesystem whose resolution knows one granted root. */
+const fs: ForkEnforcementFs = {
+  resolve: (path: string): Promise<FsTarget> => Promise.resolve({ targetKey: FsTargetKey(path), displayPath: path }),
+  contains: (parent: FsTarget, candidate: FsTarget): boolean => pathOf(candidate).startsWith(pathOf(parent)),
+  processPath: (target: FsTarget): string => pathOf(target),
+  // The write the bounded write tool delegates to once containment holds; the fake writes the candidate itself.
+  writeText: (): Promise<FsWriteOutcome> => Promise.resolve({
+    operation: 'update' as const,
+    version: FsVersion('fake-next'),
+    before: null,
+    after: '',
+  }),
+  // The edit the bounded edit tool delegates to once containment holds.
+  editText: (): Promise<FsEditOutcome> => Promise.resolve({
+    version: FsVersion('fake-edited'),
+    before: 'old',
+    after: 'new',
+  }),
+}
+
+/** The tool registry half: one definition per name, shared by the host and an unshadowed child view. */
+const trusted: ForkToolRegistry = { get: (_name: string): ToolDefinition | undefined => readDefinition }
+
+describe('fork resume preflight', () => {
+  /** A host context whose session query answers one stored child and whose filesystem is the caller's. */
+  function preflightContext(
+    resolve: (path: string) => Promise<unknown>,
+    cwd?: string,
+  ): { readonly ctx: Context; readonly announced: string[] } {
+    const ctx = new Context()
+    const announced: string[] = []
+    ctx.on('agent/created' as never, (() => { announced.push('created') }) as never)
+    ctx.provide('fs', { resolve } as never)
+    ctx.provide('sessionQuery', {
+      observeSession: async (id: string) => ({
+        header: { id, ...(cwd === undefined ? {} : { cwd }) },
+        [Symbol.dispose]: () => {},
+      }),
+    } as never)
+    return { ctx, announced }
+  }
+
+  it('resolves the recorded workspace before anything is announced', async () => {
+    const resolved: string[] = []
+    const { ctx, announced } = preflightContext(async (path) => {
+      resolved.push(path)
+      return { path }
+    }, '/granted/ws')
+    await preflightForkChild(ctx, child)
+    expect(resolved).toEqual(['/granted/ws'])
+    // The preflight itself never publishes; publication is what happens after it when it succeeds.
+    expect(announced).toEqual([])
+    await ctx.fiber.dispose()
+  })
+
+  it('refuses a workspace that no longer resolves before the child is announced', async () => {
+    const { ctx, announced } = preflightContext(
+      () => Promise.reject(Object.assign(new Error('not a directory'), { code: 'ENOTDIR' })), '/broken/ws',
+    )
+    await expect(preflightForkChild(ctx, child)).rejects.toThrow(/cannot be confined/)
+    // No `agent/created` announcement reached the watcher, so a watcher of this process records no child.
+    expect(announced).toEqual([])
+    await ctx.fiber.dispose()
+  })
+
+  it('refuses a recorded child that states no workspace', async () => {
+    const { ctx } = preflightContext(async path => ({ path }))
+    await expect(preflightForkChild(ctx, child)).rejects.toThrow(/has no workspace/)
+    await ctx.fiber.dispose()
+  })
+
+  it('fails the preflight when the stored child cannot be read', async () => {
+    const ctx = new Context()
+    ctx.provide('fs', { resolve: async (path: string) => ({ path }) } as never)
+    ctx.provide('sessionQuery', {
+      observeSession: () => Promise.reject(new Error('the stored log is unreadable')),
+    } as never)
+    // A Session this host cannot read is a preflight failure, not a reason to activate and hope: the
+    // child's limitation cannot be proven, so the caller must refuse it.
+    await expect(preflightForkChild(ctx, child)).rejects.toThrow(
+      'fork child-1 preflight failed: the stored log is unreadable',
+    )
+    await ctx.fiber.dispose()
+  })
+})
+
+describe('fork enforcement wiring', () => {
+  // The `liveshare/fork-enforcement` event was removed by the minimal-surface rule; these cases assert
+  // the child's resulting state instead of the stages an observer used to see.
+  it('leaves the prompt gate closed when the host holds no live child', async () => {
+    const ctx = new Context()
+    // No agent registry at all: nothing installs, so the child's prompt gate stays closed.
+    const forks = await registry()
+    expect(await installHostForkEnforcement(ctx, 'child-1', { forks, describe: describeTool }))
+      .toBeUndefined()
+    expect(forks.enforcementInstalled('child-1')).toBe(false)
+    expect(forks.allowsPrompt('child-1', viewer))
+      .toMatchObject({ ok: false, code: 'fork-ceiling-uninstalled' })
+
+    // An agent the host does not hold is the same consequence: nothing was installed for the child.
+    ctx.provide('agents', { get: () => undefined })
+    expect(await installHostForkEnforcement(ctx, 'child-1', { forks, describe: describeTool }))
+      .toBeUndefined()
+    expect(forks.enforcementInstalled('child-1')).toBe(false)
+    expect(forks.allowsPrompt('child-1', viewer))
+      .toMatchObject({ ok: false, code: 'fork-ceiling-uninstalled' })
+    await ctx.fiber.dispose()
+  })
+
+  it('fails a cold entry whose granted workspace cannot resolve, and keeps the prompt gate closed', async () => {
+    const ctx = new Context()
+    // Every service the installer needs except a filesystem that can resolve: the granted root cannot be
+    // resolved, which is the failure a real restart hit and could not observe.
+    ctx.provide('fs', {
+      resolve: () => Promise.reject(new Error('the workspace is gone')),
+      contains: () => false,
+      processPath: () => '',
+      writeText: () => Promise.reject(new Error('unused')),
+    })
+    ctx.provide('sandboxPolicy', { resolve: () => ({ mode: 'workspace-write', workspaceRoot: '/workspace' }) })
+    ctx.provide('tools', { get: () => undefined })
+
+    // A scoped child context, as the prepublish setup hands in: the installer must get past its own
+    // checks and fail on the workspace itself.
+    const forks = await registry()
+    const scope = createScope(ctx, { id: 'child-1' })
+    await expect(installForkEnforcementForAgent(
+      ctx,
+      'child-1',
+      scope.ctx,
+      { header: { cwd: '/workspace' } } as never,
+      { forks, describe: describeTool },
+    )).rejects.toThrow('the workspace is gone')
+
+    // The error still propagates, and the child it failed to install for stays unpromptable.
+    expect(forks.enforcementInstalled('child-1')).toBe(false)
+    expect(forks.allowsPrompt('child-1', viewer))
+      .toMatchObject({ ok: false, code: 'fork-ceiling-uninstalled' })
+    await ctx.fiber.dispose()
+  })
+
+  it('gives a child the bounded write only when the host says the share writes', async () => {
+    /** Drive the cold entry with one host flag and report what the child's scope received. */
+    const install = async (host: { readonly write?: boolean }) => {
+      const ctx = new Context()
+      ctx.provide('fs', fs)
+      ctx.provide('sandboxPolicy', { resolve: () => ({ mode: 'workspace-write', workspaceRoot: grantedRoot }) })
+      const registered: string[] = []
+      ctx.provide('tools', {
+        get: (tool: string): ToolDefinition | undefined => ({ ...readDefinition, name: tool }),
+        guard: () => () => {},
+        register: (definition: ToolDefinition) => {
+          registered.push(definition.name)
+          return () => {}
+        },
+      })
+      const scope = createScope(ctx, { id: child })
+      const dispose = await installForkEnforcementForAgent(
+        ctx,
+        child,
+        scope.ctx,
+        { header: { cwd: grantedRoot } } as never,
+        { forks: await registry(), describe: describeTool, ...host },
+      )
+      await ctx.fiber.dispose()
+      return { registered, installed: dispose !== undefined }
+    }
+
+    const reading = await install({})
+    expect(reading.installed).toBe(true)
+    // The path-bearing view surface, including the tools that only search or read images.
+    expect(reading.registered).toEqual(expect.arrayContaining([
+      ...SHARED_TOOL_PROFILES.filter(profile => profile.tier === 'view' && !profile.noFileEffect).map(profile => profile.name),
+    ]))
+    // A share whose mode is unknown, or reading, never gets the write ceiling's replacements.
+    expect(reading.registered).not.toContain('write')
+    expect(reading.registered).not.toContain('edit')
+
+    const writing = await install({ write: true })
+    expect(writing.registered).toEqual(expect.arrayContaining([
+      ...SHARED_TOOL_PROFILES.filter(profile => !profile.noFileEffect).map(profile => profile.name),
+    ]))
+  })
+
+  it('produces a verdict through the host resolution and lets the guard allow that read', async () => {
+    const { ctx, captured } = childContext()
+    const forks = await registry()
+    const dispose = installForkEnforcement({
+      childSessionId: child,
+      childContext: ctx,
+      childScope,
+      grantedRoot: { targetKey: FsTargetKey(grantedRoot), displayPath: grantedRoot },
+      cwd: grantedRoot,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: grantedRoot, sessionId: SessionId(child) }),
+      fs,
+      tools: trusted,
+      forks,
+      describe: describeTool,
+    })
+
+    expect(dispose).toBeDefined()
+    expect(forks.enforcementInstalled(child)).toBe(true)
+    // The child's own read is this host's: the deployment's definition is shadowed by a confined one.
+    expect(captured.definitions.get('read')?.name).toBe('read')
+    expect(captured.definitions.get('read')).not.toBe(readDefinition)
+    const inside: ForkToolExecution = {
+      name: 'read',
+      arguments: { file_path: `${grantedRoot}/a.ts` },
+      agent: { id: child },
+      token: Symbol('inside'),
+    }
+    await captured.preExecute?.(inside, () => Promise.resolve({ kind: 'allow' }))
+    // The verdict comes from the host's resolve/contains pair, not from the guard reading the string.
+    expect(captured.guard?.(inside)).toBeUndefined()
+
+    // The verdict is bound to that execution's token: a different execution naming the same authorized
+    // path has no verdict of its own and is refused.
+    const other: ForkToolExecution = {
+      name: 'read',
+      arguments: { file_path: `${grantedRoot}/a.ts` },
+      agent: { id: child },
+      token: Symbol('another-execution'),
+    }
+    expect(captured.guard?.(other)).toMatch(/workspace/u)
+
+    // A path the resolution did not confirm is refused for that same execution.
+    const outside: ForkToolExecution = { ...inside, arguments: { file_path: '/etc/passwd' } }
+    await captured.preExecute?.(outside, () => Promise.resolve({ kind: 'allow' }))
+    expect(captured.guard?.(outside)).toMatch(/workspace/u)
+  })
+
+  it('refuses a child whose scope cannot register the confined read, and keeps the prompt gate closed', async () => {
+    const ctx = new Context()
+    ctx.provide('fs', fs)
+    ctx.provide('sandboxPolicy', { resolve: () => ({ mode: 'workspace-write', workspaceRoot: grantedRoot }) })
+    ctx.provide('tools', {
+      get: () => readDefinition,
+      guard: () => () => {},
+      register: () => { throw new Error('the scope already holds this name') },
+    })
+    const forks = await registry()
+    const scope = createScope(ctx, { id: child })
+
+    const dispose = await installForkEnforcementForAgent(
+      ctx,
+      child,
+      scope.ctx,
+      { header: { cwd: grantedRoot } } as never,
+      { forks, describe: describeTool },
+    )
+
+    // The deployment's unconfined read is never vouched for, and the child it was refused for stays
+    // unpromptable: the registry's own gate names that consequence.
+    expect(dispose).toBeUndefined()
+    expect(forks.enforcementInstalled(child)).toBe(false)
+    expect(forks.allowsPrompt(child, viewer)).toMatchObject({ ok: false, code: 'fork-ceiling-uninstalled' })
+    await ctx.fiber.dispose()
+  })
+
+  it('keeps the error a refused write registration raised for the caller to state', async () => {
+    const ctx = new Context()
+    ctx.provide('fs', fs)
+    ctx.provide('sandboxPolicy', { resolve: () => ({ mode: 'workspace-write', workspaceRoot: grantedRoot }) })
+    const registered: string[] = []
+    ctx.provide('tools', {
+      get: (tool: string): ToolDefinition | undefined => ({ ...readDefinition, name: tool }),
+      guard: () => () => {},
+      register: (definition: ToolDefinition) => {
+        if (definition.name === 'write') throw new Error('the child scope already holds write')
+        registered.push(definition.name)
+        return () => {}
+      },
+    })
+    const forks = await registry()
+    const scope = createScope(ctx, { id: child })
+    const failure: ForkEnforcementFailure = {}
+
+    const dispose = await installForkEnforcementForAgent(
+      ctx,
+      child,
+      scope.ctx,
+      { header: { cwd: grantedRoot } } as never,
+      { forks, describe: describeTool, write: true },
+      failure,
+    )
+
+    // The write-capable installation is refused as a whole, and the scope's own error survives for the
+    // caller that reports `fork execution limits are unavailable: <message>`.
+    expect(dispose).toBeUndefined()
+    expect(registered).toEqual(SHARED_TOOL_PROFILES.filter(profile => profile.tier === 'view' && !profile.noFileEffect).map(profile => profile.name))
+    expect(failure.registration).toMatchObject({ tool: 'write' })
+    expect((failure.registration?.error as Error).message).toBe('the child scope already holds write')
+    expect(forks.enforcementInstalled(child)).toBe(false)
+    await ctx.fiber.dispose()
+  })
+
+  it('installs the guard alone, and says so, when the deployment has no read tool for a shared session', () => {
+    const { ctx, captured } = childContext()
+    ctx.tools.get = () => undefined
+    const installation = installSourceSessionAccess({
+      sessionId: 'session-shared',
+      context: ctx,
+      scope: childScope,
+      grantedRoot: { targetKey: FsTargetKey(grantedRoot), displayPath: grantedRoot },
+      cwd: grantedRoot,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: grantedRoot, sessionId: SessionId('session-shared') }),
+      fs,
+      tools: { get: () => undefined },
+      describe: describeTool,
+      write: { mayWrite: () => true },
+    })
+
+    // Nothing usable was installed, and the caller is told which tool is missing.
+    expect(installation.readConfined).toBe(false)
+    expect(installation.refusal).toBe('tool-unavailable')
+    expect(captured.definitions.size).toBe(0)
+    // The guard still refuses every tool of the Session, so it never falls back to the owner's own
+    // definitions...
+    const call = (name: string) =>
+      ({ name, arguments: {}, agent: { id: child }, token: Symbol(name) }) as never
+    expect(captured.guard?.(call('read'))).toMatch(/may not use/u)
+    expect(captured.guard?.(call('bash'))).toMatch(/may not use/u)
+    // ...and a released layer stops refusing anything.
+    installation.dispose()
+    expect(captured.guard).toBeUndefined()
+  })
+
+  it('keeps the error a source-session registration raised on the installation', () => {
+    const { ctx } = childContext()
+    ctx.tools.register = () => { throw new Error('the source scope already holds read') }
+    const installation = installSourceSessionAccess({
+      sessionId: 'session-shared',
+      context: ctx,
+      scope: childScope,
+      grantedRoot: { targetKey: FsTargetKey(grantedRoot), displayPath: grantedRoot },
+      cwd: grantedRoot,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: grantedRoot, sessionId: SessionId('session-shared') }),
+      fs,
+      tools: { get: () => readDefinition },
+      describe: describeTool,
+    })
+
+    // The layer still refuses the Session's tools, and the error the scope raised is not lost.
+    expect(installation.readConfined).toBe(false)
+    expect(installation.refusal).toBe('register-refused')
+    expect(installation.registrationFailure).toMatchObject({ tool: 'read' })
+    expect((installation.registrationFailure?.error as Error).message).toBe('the source scope already holds read')
+    installation.dispose()
+  })
+
+  it('runs as a waterfall listener: it awaits the producer and returns the pipeline’s own decision', async () => {
+    const { ctx, captured } = childContext()
+    installForkEnforcement({
+      childSessionId: child,
+      childContext: ctx,
+      childScope,
+      grantedRoot: { targetKey: FsTargetKey(grantedRoot), displayPath: grantedRoot },
+      cwd: grantedRoot,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: grantedRoot, sessionId: SessionId(child) }),
+      fs,
+      tools: trusted,
+      forks: await registry(),
+      describe: describeTool,
+    })
+
+    let nextCalls = 0
+    const decision: PreToolDecision = { kind: 'deny', reason: 'a later listener denied this' }
+    const recorded = await captured.preExecute?.(
+      {
+        name: 'read',
+        arguments: { file_path: '/etc/passwd' },
+        agent: { id: child },
+        token: Symbol('a'),
+      },
+      () => { nextCalls += 1; return Promise.resolve({ kind: 'allow' }) },
+    )
+    // A verdict the host could not confirm leaves no missing decision behind: the pipeline still sees
+    // the rest of the chain's answer, and the guard refuses the execution on its own.
+    expect(nextCalls).toBe(1)
+    expect(recorded).toEqual({ kind: 'allow' })
+    const denied = await captured.preExecute?.(
+      {
+        name: 'read',
+        arguments: { file_path: `${grantedRoot}/a.ts` },
+        agent: { id: child },
+        token: Symbol('b'),
+      },
+      () => { nextCalls += 1; return Promise.resolve(decision) },
+    )
+    // An existing denial downstream stays the decision: this listener never answers in its place.
+    expect(denied).toBe(decision)
+    expect(nextCalls).toBe(2)
+  })
+
+  it('refuses to install anything while one real dependency is missing', async () => {
+    const forks = await registry()
+    // No `fs` on this deployment: nothing could apply a limit, so the record must stay unwritten.
+    const withoutFs = {
+      get: (name: string) => name === 'fs'
+        ? undefined
+        : { get: () => undefined, resolve: () => ({ mode: 'workspace-write', workspaceRoot: grantedRoot }) },
+    }
+    expect(await installHostForkEnforcement(
+      Object.assign(new Context(), withoutFs), child, { forks, describe: describeTool },
+    ))
+      .toBeUndefined()
+    expect(forks.enforcementInstalled(child)).toBe(false)
+  })
+
+  it('releases the guard, the verdicts, and the record when the child goes away', async () => {
+    const { ctx, captured } = childContext()
+    const forks = await registry()
+    const dispose = installForkEnforcement({
+      childSessionId: child,
+      childContext: ctx,
+      childScope,
+      grantedRoot: { targetKey: FsTargetKey(grantedRoot), displayPath: grantedRoot },
+      cwd: grantedRoot,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: grantedRoot, sessionId: SessionId(child) }),
+      fs,
+      tools: trusted,
+      forks,
+      describe: describeTool,
+    })
+
+    expect(captured.guard).toBeDefined()
+    // The verdict sink is registered with the limit so a settled execution's verdict is dropped.
+    expect(captured.result).toBeDefined()
+    dispose?.()
+    // The guard stays registered: with the record gone it refuses, where unregistering it would leave
+    // the child running with no limit at all.
+    expect(captured.guard).toBeDefined()
+    expect(captured.guard?.({ name: 'read', arguments: {}, agent: { id: child } }))
+      .toMatch(/limits are not installed/u)
+    expect(captured.preExecute).toBeUndefined()
+    expect(captured.result).toBeUndefined()
+    expect(forks.enforcementInstalled(child)).toBe(false)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/readonly-fork-idempotency.spec.ts b/packages/experimental/liveshare/tests/readonly-fork-idempotency.spec.ts
new file mode 100644
index 0000000000..a3370f64e2
--- /dev/null
+++ b/packages/experimental/liveshare/tests/readonly-fork-idempotency.spec.ts
@@ -0,0 +1,399 @@
+/**
+ * One logical fork request creates one child.
+ *
+ * A retry of the same request replays the answer it already produced, a concurrent retry waits for the
+ * request in flight, one identity naming another boundary is refused instead of receiving the earlier
+ * child, and a different operation naming the same boundary still creates its own child. Admission runs
+ * before any of it, so a recorded answer is never replayed for a share that stopped.
+ */
+
+import { mkdtempSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it, onTestFinished } from 'vitest'
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import type { ForkShareState } from '../src/host/fork-policy.ts'
+import type { ViewerCallRequest } from '../src/viewer-channel.ts'
+import { readerConnection, type ReaderFetch } from './viewer-read-peers.ts'
+
+const creator = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' }
+
+/** Temporary state directories this spec created, removed after each test. */
+const temporary: string[] = []
+
+/**
+ * Let the fork path reach its next awaited step.
+ *
+ * The path reserves the operation through the registry's file lock before it enforces the child, so
+ * waiting on microtasks alone would starve the file I/O that reservation completes on.
+ * @returns A promise settled after the macrotask queue ran.
+ */
+const settleMacrotasks = (): Promise<void> => new Promise((resolve) => { setTimeout(resolve, 0) })
+
+afterEach(() => {
+  for (const directory of temporary.splice(0)) rmSync(directory, { recursive: true, force: true })
+})
+
+const share: ForkShareState = {
+  shareId: 'share-1',
+  sessionId: 'session-shared',
+  allowsFork: true,
+  viewerAdmitted: true,
+  stopped: false,
+}
+
+/**
+ * A reader Connection whose Peers are released when the test ends.
+ * @param fetch - The owner's shared-handler stand-in.
+ * @returns The Connection and the Peers it created.
+ */
+function ownerConnection(fetch: ReaderFetch) {
+  const owner = readerConnection(fetch)
+  onTestFinished(owner.dispose)
+  return owner
+}
+
+/** A connection whose fork answer mints one child per dispatch, counted by the caller. */
+function connection(
+  childIds: readonly string[],
+  dispatch: () => Promise<void>,
+  envelope: (request: unknown) => unknown = () => ({}),
+) {
+  let dispatches = 0
+  const dispatchedAs: PeerScope[] = []
+  const sentBodies: unknown[] = []
+  const owner = ownerConnection(async (request, peer) => {
+    dispatches += 1
+    dispatchedAs.push(peer)
+    const index = dispatches - 1
+    const sent: unknown = await request.json().catch(() => undefined)
+    sentBodies.push(sent)
+    await dispatch()
+    return new Response(
+      JSON.stringify({
+        ...(envelope(sent) as object),
+        result: { ok: true, value: { sessionId: childIds[index] ?? 'session-child' } },
+      }),
+      { status: 200, headers: { 'content-type': 'application/json' } },
+    )
+  })
+  return { owner, dispatchedAs, sentBodies, dispatches: () => dispatches }
+}
+
+/** One viewer-read service over a fresh registry, with the share state the test wants. */
+function service(options: {
+  readonly childIds?: readonly string[]
+  readonly dispatch?: () => Promise<void>
+  readonly state?: () => ForkShareState
+  readonly enforce?: (childSessionId: string) => Promise<(() => void) | undefined>
+  readonly envelope?: (request: unknown) => unknown
+  /** Registry to serve from, for a test that reloads one a previous host wrote. */
+  readonly forks?: ForkRegistry
+} = {}) {
+  const files = mkdtempSync(join(tmpdir(), 'liveshare-idempotency-'))
+  temporary.push(files)
+  const forks = options.forks ?? new ForkRegistry(join(files, 'forks.json'))
+  const spawned = connection(
+    options.childIds ?? [],
+    options.dispatch ?? (() => Promise.resolve()),
+    options.envelope,
+  )
+  const read = createViewerReadService({
+    connection: spawned.owner.connection,
+    sharedSessionId: () => 'session-shared',
+    forkStateOf: options.state ?? (() => share),
+    forks,
+    // A host that installs the child's limit by default, as the share host does; a test overrides it to
+    // watch the failure path.
+    enforceChild: options.enforce ?? (() => Promise.resolve(() => {})),
+  })
+  return {
+    read, forks, dispatches: spawned.dispatches, owner: spawned.owner,
+    dispatchedAs: spawned.dispatchedAs, sentBodies: spawned.sentBodies,
+  }
+}
+
+/** One fork request as the viewer client sends it: a Typert envelope carrying the caller's rpcId. */
+function forkRequest(options: {
+  readonly rpcId?: string
+  readonly atSeq?: number
+  readonly operationId?: string
+} = {}): ViewerCallRequest {
+  return {
+    op: 'call',
+    path: '/api/session/fork',
+    body: {
+      type: 'client-request',
+      ...(options.rpcId === undefined ? {} : { rpcId: options.rpcId }),
+      method: 'session/fork',
+      payload: {
+        args: {
+          request: {
+            sessionId: 'session-shared',
+            ...(options.atSeq === undefined ? {} : { atSeq: options.atSeq }),
+            ...(options.operationId === undefined ? {} : { operationId: options.operationId }),
+          },
+        },
+      },
+    },
+  }
+}
+
+/** The child one answer names, as the viewer client reads it. */
+function childOf(answer: { readonly body: unknown }): string | undefined {
+  const body = answer.body as { readonly result?: { readonly value?: { readonly sessionId?: string } } }
+  return body.result?.value?.sessionId
+}
+
+/** The child identity one fork envelope names, as the owner's service reads it. */
+function namedForkChild(envelope: unknown): string | undefined {
+  const request = (envelope as {
+    readonly payload?: { readonly args?: { readonly request?: { readonly childSessionId?: unknown } } }
+  }).payload?.args?.request
+  const named = request?.childSessionId
+  return typeof named === 'string' && named !== '' ? named : undefined
+}
+
+describe('fork request idempotency', () => {
+  it('replays the child a retried request already created', async () => {
+    const { read, dispatches, owner, dispatchedAs } = service({ childIds: ['session-child-1', 'session-child-2'] })
+    const request = forkRequest({ rpcId: 'rpc-1', atSeq: 16 })
+
+    const first = await read.answer('share-1', request, creator)
+    const retry = await read.answer('share-1', request, creator)
+
+    expect(childOf(first)).toBe('session-child-1')
+    expect(childOf(retry)).toBe('session-child-1')
+    expect(dispatches()).toBe(1)
+    // The one fork that ran spoke for this reader's own Peer.
+    expect(dispatchedAs).toEqual([owner.peers[0]])
+    expect(owner.principalOf(0)).toEqual({ kind: 'share-viewer', shareId: 'share-1', actor: creator })
+    read.close()
+  })
+
+  it('creates one child when a retry overlaps the request still in flight', async () => {
+    let release = (): void => {}
+    const held = new Promise<void>((resolve) => { release = resolve })
+    const { read, dispatches } = service({
+      childIds: ['session-child-1'],
+      dispatch: () => held,
+      // The owner echoes the caller's correlation id, as the real gateway does.
+      envelope: sent => ({ rpcId: (sent as { readonly rpcId?: string }).rpcId }),
+    })
+    // The same logical operation, sent twice at once with different correlation ids.
+    const first = read.answer(
+      'share-1', forkRequest({ rpcId: 'rpc-first', operationId: 'op-concurrent', atSeq: 16 }), creator,
+    )
+    const second = read.answer(
+      'share-1', forkRequest({ rpcId: 'rpc-retry', operationId: 'op-concurrent', atSeq: 16 }), creator,
+    )
+    release()
+
+    const firstAnswer = await first
+    const secondAnswer = await second
+    expect(childOf(firstAnswer)).toBe('session-child-1')
+    expect(childOf(secondAnswer)).toBe('session-child-1')
+    // The caller waiting on the in-flight fork gets its own correlation id, not the starter's.
+    expect((firstAnswer.body as { readonly rpcId?: string }).rpcId).toBe('rpc-first')
+    expect((secondAnswer.body as { readonly rpcId?: string }).rpcId).toBe('rpc-retry')
+    expect(dispatches()).toBe(1)
+    read.close()
+  })
+
+  it('refuses one identity naming another boundary instead of reusing the earlier child', async () => {
+    const { read, dispatches } = service({ childIds: ['session-child-1', 'session-child-2'] })
+    await read.answer('share-1', forkRequest({ rpcId: 'rpc-2', atSeq: 16 }), creator)
+
+    const conflict = await read.answer('share-1', forkRequest({ rpcId: 'rpc-2', atSeq: 12 }), creator)
+
+    expect(conflict).toMatchObject({ status: 409, body: { error: 'fork-operation-conflict' } })
+    expect(dispatches()).toBe(1)
+    read.close()
+  })
+
+  it('refuses another boundary for a reservation whose child was never recorded', async () => {
+    const { read, forks, dispatches } = service({ childIds: ['session-child-1'] })
+    // The identity this service computes, written as the reservation a process that died mid-fork leaves.
+    const identity = [
+      creator.providerId, creator.tenantId, creator.subjectId, 'share-1', 'session-shared',
+      'rpc:rpc-reserved',
+    ].join('\u0000')
+    await forks.reserveOperation(identity, 16)
+
+    const conflict = await read.answer('share-1', forkRequest({ rpcId: 'rpc-reserved', atSeq: 12 }), creator)
+
+    // The boundary bound with the identity decides: another boundary is refused, and nothing is created.
+    expect(conflict).toMatchObject({ status: 409, body: { error: 'fork-operation-conflict' } })
+    expect(dispatches()).toBe(0)
+    expect(forks.find('session-child-1')).toBeUndefined()
+    read.close()
+  })
+
+  it('reloads a served operation and refuses its retry without forking again', async () => {
+    // A record written before readiness existed: the retry must keep its child and be refused, not create
+    // a second one and not be told the fork succeeded.
+    const files = mkdtempSync(join(tmpdir(), 'liveshare-reload-'))
+    temporary.push(files)
+    const path = join(files, 'forks.json')
+    // The identity this service computes: trusted viewer, share, source, and the caller's operation, which
+    // is the caller's rpcId when it names no explicit one.
+    const legacyKey = ['feishu', 'tenant-a', 'ou_viewer', 'share-1', 'session-shared', 'rpc:legacy'].join('\u0000')
+    writeFileSync(path, JSON.stringify({
+      version: 1,
+      forks: [],
+      operations: [{
+        key: legacyKey,
+        childSessionId: 'session-child-1',
+        boundary: 16,
+        status: 200,
+        body: { result: { ok: true, value: { sessionId: 'session-child-1' } } },
+      }],
+    }))
+    const forks = new ForkRegistry(path)
+    const spawned = service({ childIds: ['session-child-2'], forks })
+    const read = spawned.read
+
+    const answer = await read.answer(
+      'share-1',
+      // The identity the legacy record was written under, at the boundary it named.
+      forkRequest({ rpcId: 'legacy', atSeq: 16 }),
+      creator,
+    )
+
+    expect(answer.status).toBe(503)
+    expect(answer.body).toMatchObject({ error: 'fork-enforcement-failed', sessionId: 'session-child-1' })
+    expect(spawned.dispatches()).toBe(0)
+    read.close()
+  })
+
+  it('sends no child identity and reuses the recorded child on a retry', async () => {
+    const { read, forks, sentBodies, dispatches } = service({ childIds: ['session-child-1'] })
+    const request = forkRequest({ rpcId: 'rpc-no-child', atSeq: 16 })
+
+    const first = await read.answer('share-1', request, creator)
+    const retry = await read.answer('share-1', request, creator)
+
+    expect(childOf(first)).toBe('session-child-1')
+    expect(childOf(retry)).toBe('session-child-1')
+    expect(dispatches()).toBe(1)
+    // The current `SessionForkRequest` has no child identity field, and the owner mints the id itself, so
+    // the host forwards the caller's envelope unchanged and makes the retry idempotent from its own record.
+    expect(sentBodies).toHaveLength(1)
+    expect(namedForkChild(sentBodies[0])).toBeUndefined()
+    expect(forks.listForShare('share-1').map(record => record.childSessionId)).toEqual(['session-child-1'])
+    read.close()
+  })
+
+  it('creates a new child when a different operation names the same boundary', async () => {
+    const { read, dispatches } = service({ childIds: ['session-child-1', 'session-child-2'] })
+
+    const first = await read.answer('share-1', forkRequest({ rpcId: 'rpc-3', atSeq: 16 }), creator)
+    const second = await read.answer('share-1', forkRequest({ rpcId: 'rpc-4', atSeq: 16 }), creator)
+
+    expect(childOf(first)).toBe('session-child-1')
+    expect(childOf(second)).toBe('session-child-2')
+    expect(dispatches()).toBe(2)
+    read.close()
+  })
+
+  it('never replays a recorded answer for a share that stopped', async () => {
+    // The same registry and the same service: the recorded operation is really present when the share
+    // stops, so the refusal comes from admission rather than from an empty store.
+    let state: ForkShareState = share
+    const { read, forks, dispatches } = service({
+      childIds: ['session-child-1'],
+      state: () => state,
+      envelope: sent => ({ rpcId: (sent as { readonly rpcId?: string }).rpcId }),
+    })
+    const request = forkRequest({ rpcId: 'rpc-5', atSeq: 16 })
+    await read.answer('share-1', request, creator)
+    await forks.revokeShare('share-1', '2026-09-12T00:00:00.000Z')
+    state = { ...share, stopped: true }
+
+    const refused = await read.answer('share-1', forkRequest({ rpcId: 'rpc-6', atSeq: 16 }), creator)
+
+    expect(refused.status).toBe(403)
+    // Admission ran first: the recorded operation was not served even though the identity repeats.
+    expect(dispatches()).toBe(1)
+    read.close()
+  })
+
+  it('answers a retry under the correlation id of the request being served', async () => {
+    // The owner echoes the caller's correlation id beside its result, as the real gateway does.
+    const { read, dispatches } = service({
+      childIds: ['session-child-1'],
+      envelope: sent => ({ rpcId: (sent as { readonly rpcId?: string }).rpcId }),
+    })
+
+    // One logical operation, retried under a fresh correlation id: the identity survives, the id does not.
+    const first = await read.answer(
+      'share-1', forkRequest({ rpcId: 'rpc-old', operationId: 'op-1', atSeq: 16 }), creator,
+    )
+    const retry = await read.answer(
+      'share-1', forkRequest({ rpcId: 'rpc-new', operationId: 'op-1', atSeq: 16 }), creator,
+    )
+
+    expect(childOf(retry)).toBe('session-child-1')
+    expect((first.body as { readonly rpcId?: string }).rpcId).toBe('rpc-old')
+    // The replayed body names the child but carries the id this request is waiting on.
+    expect((retry.body as { readonly rpcId?: string }).rpcId).toBe('rpc-new')
+    expect(dispatches()).toBe(1)
+    read.close()
+  })
+
+  it('makes every retry wait for the limit installation the first request is still doing', async () => {
+    let release = (): void => {}
+    const held = new Promise<void>((resolve) => { release = resolve })
+    let enforcing = 0
+    const { read, dispatches } = service({
+      childIds: ['session-child-1'],
+      enforce: async () => {
+        enforcing += 1
+        await held
+        return () => {}
+      },
+    })
+    const request = forkRequest({ rpcId: 'rpc-barrier', atSeq: 16 })
+
+    const first = read.answer('share-1', request, creator)
+    while (enforcing === 0) await settleMacrotasks()
+    let secondSettled = false
+    const second = read.answer('share-1', request, creator).then((answer) => {
+      secondSettled = true
+      return answer
+    })
+    await settleMacrotasks()
+    // Nothing is recorded while installation runs, and the retry is still waiting on that same work.
+    expect(secondSettled).toBe(false)
+    release()
+
+    expect(childOf(await first)).toBe('session-child-1')
+    expect(childOf(await second)).toBe('session-child-1')
+    expect(dispatches()).toBe(1)
+    read.close()
+  })
+
+  it('never forks again when the child could not be given read-only limits', async () => {
+    const { read, forks, dispatches } = service({
+      childIds: ['session-child-1', 'session-child-2'],
+      enforce: () => Promise.reject(new Error('fixture-install-failed')),
+    })
+    const request = forkRequest({ rpcId: 'rpc-enforce', atSeq: 16 })
+
+    const failed = await read.answer('share-1', request, creator)
+    const retry = await read.answer('share-1', request, creator)
+
+    // The child exists — the owner created it — but it is not a fork the viewer got.
+    expect(failed.status).toBe(503)
+    expect((failed.body as { readonly error?: string }).error).toBe('fork-enforcement-failed')
+    expect(retry.status).toBe(503)
+    expect((retry.body as { readonly error?: string }).error).toBe('fork-enforcement-failed')
+    // The retry reuses that same record instead of creating a second child.
+    expect(dispatches()).toBe(1)
+    expect(forks.find('session-child-1')?.boundary).toBe(16)
+    expect(forks.find('session-child-2')).toBeUndefined()
+    read.close()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/readonly-fork-ownership.spec.ts b/packages/experimental/liveshare/tests/readonly-fork-ownership.spec.ts
new file mode 100644
index 0000000000..0586af1af6
--- /dev/null
+++ b/packages/experimental/liveshare/tests/readonly-fork-ownership.spec.ts
@@ -0,0 +1,266 @@
+/** A viewer's own fork children, and only those: ownership is the whole subject, tenant included. */
+
+import { mkdtempSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import RemoteAccessService from '@deepseek-ai/dsh-api-remote-access'
+import { SessionId } from '@deepseek-ai/dsh-session'
+import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import type { ForkShareState } from '../src/host/fork-policy.ts'
+import { createViewerAccessPolicy, readerWriteRefusal, type ViewerAccessFacts } from '../src/host/viewer-access-policy.ts'
+import type { ViewerCallRequest } from '../src/viewer-channel.ts'
+import { readerConnection } from './viewer-read-peers.ts'
+
+const creator = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' }
+
+const share: ForkShareState = {
+  shareId: 'share-1',
+  sessionId: 'session-shared',
+  // The view tier with the share's own fork switch on: forking is no longer a tier of its own.
+  sessionMode: 'view',
+  allowsFork: true,
+  viewerAdmitted: true,
+  stopped: false,
+}
+
+function pageBody(sessionId: string) {
+  return { type: 'client-request', rpcId: 'page', method: 'session/page',
+    payload: { args: { request: { address: { kind: 'session', sessionId }, throughSeq: 3 } } } }
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === 'object' && value !== null && !Array.isArray(value)
+}
+
+/** The Session one `session/page` envelope addresses. */
+function pagedSession(envelope: unknown): string | undefined {
+  if (!isRecord(envelope) || !isRecord(envelope.payload) || !isRecord(envelope.payload.args)) return undefined
+  const request = envelope.payload.args.request
+  if (!isRecord(request) || !isRecord(request.address)) return undefined
+  return typeof request.address.sessionId === 'string' ? request.address.sessionId : undefined
+}
+
+/**
+ * The owner's Gateway and Session Controller as one reader's calls reach them.
+ *
+ * Each call speaks for the reader's Peer, so a real remote access service carrying this package's
+ * `share-viewer` policy is asked about that Peer's principal: the list keeps only the rows it allows, as
+ * the Session Controller's own filter does, and a page it denies is refused as the Gateway refuses it.
+ * The list carries the shared session, this viewer's child when the registry has one, and a session
+ * nobody shared.
+ */
+function owner(access: RemoteAccessService) {
+  const connection = readerConnection(async (request, peer) => {
+    const endpoint = new URL(request.url).pathname === '/api/session/list' ? 'session/list' : 'session/page'
+    const envelope: unknown = await request.json()
+    const decide = (sessionId: string) => access.decide({
+      principal: peer.principal,
+      action: endpoint,
+      resources: [{ kind: 'session', id: SessionId(sessionId) }],
+    })
+    if (endpoint === 'session/list') {
+      const items = [
+        { sessionId: 'session-shared', title: 'Shared' },
+        { sessionId: 'session-child', title: 'Child' },
+        { sessionId: 'session-other', title: 'Someone else' },
+      ]
+      return Response.json({ result: { ok: true, value: { items: items.filter(item => decide(item.sessionId).kind === 'allow') } } })
+    }
+    const sessionId = pagedSession(envelope)
+    const decision = sessionId === undefined ? { kind: 'deny', reason: 'resource-invalid' } as const : decide(sessionId)
+    if (decision.kind === 'deny') {
+      return Response.json({
+        type: 'server-response',
+        rpcId: 'page',
+        result: { ok: false, error: { code: 'remote-access/denied', message: 'denied', details: { action: endpoint, reason: decision.reason } } },
+      })
+    }
+    // Every session read the owner answers carries a projection block; the viewer's history page
+    // serves this value.
+    return Response.json({ result: { ok: true, value: { projections: { asOfSeq: 3, values: { title: 'Child' } } } } })
+  })
+  onTestFinished(connection.dispose)
+  return connection
+}
+
+async function service(childCreator = creator): Promise<{ read: ReturnType<typeof createViewerReadService> }> {
+  const files = mkdtempSync(join(tmpdir(), 'liveshare-ownership-'))
+  onTestFinished(() => { rmSync(files, { recursive: true, force: true }) })
+  const forks = new ForkRegistry(join(files, 'forks.json'))
+  await forks.record({
+    childSessionId: 'session-child',
+    shareId: 'share-1',
+    sourceSessionId: 'session-shared',
+    boundary: 3,
+    creator: childCreator,
+    createdAt: '2026-09-11T00:00:00.000Z',
+  })
+  const accessFacts: ViewerAccessFacts = {
+    share: shareId => shareId === share.shareId ? share : undefined,
+    viewerAdmitted: () => true,
+    sourceConfined: () => false,
+    forks,
+    workspaces: () => [],
+    declaredCapabilities: () => [],
+  }
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  await ctx.plugin(TypertRegistry)
+  await ctx.plugin(RemoteAccessService)
+  ctx.remoteAccess.registerPolicy('share-viewer', createViewerAccessPolicy(accessFacts))
+  const read = createViewerReadService({
+    connection: owner(ctx.remoteAccess).connection,
+    sharedSessionId: () => 'session-shared',
+    forkStateOf: () => share,
+    forks,
+    writeRefusal: (viewer, action, sessionId, concrete) => readerWriteRefusal(accessFacts, viewer, action, sessionId, concrete),
+  })
+  return { read }
+}
+
+/** Ask for the list as the given viewer. */
+async function listSessions(read: Awaited<ReturnType<typeof service>>['read'], actor: typeof creator) {
+  const answer = await read.answer('share-1', {
+    op: 'call',
+    path: '/api/session/list',
+    body: { type: 'client-request', rpcId: 'list', method: 'session/list', payload: { args: { request: {} } } },
+  }, actor)
+  const body = answer.body as {
+    readonly result?: { readonly value?: { readonly items?: readonly { readonly sessionId: string }[] } }
+  }
+  return body.result?.value?.items ?? []
+}
+
+describe('read-only fork ownership in the viewer session list', () => {
+  it('keeps the shared session and this viewer’s own child, annotated', async () => {
+    const { read } = await service()
+    const items = await listSessions(read, creator)
+
+    expect(items.map(item => item.sessionId)).toEqual(['session-shared', 'session-child'])
+    expect(items[1]).toMatchObject({
+      projections: {
+        values: {
+          forkLineage: {
+            origin: 'fork',
+            sourceSessionId: 'session-shared',
+            workspaceReadOnly: true,
+            authoredByViewer: true,
+          },
+        },
+      },
+    })
+    // The shared Session is not this viewer's branch, so it states no branch facts.
+    expect(items[0]).not.toHaveProperty('projections')
+    read.close()
+  })
+
+  it('states the same branch facts on the branch’s own page, and none on the shared Session', async () => {
+    const { read } = await service()
+    // Opening the branch would otherwise replace the projection value the list published with the
+    // owner's own baseline, which carries no branch facts: the page states them too.
+    const child = await read.answer('share-1', {
+      op: 'call', path: '/api/session/page', body: pageBody('session-child'),
+    }, creator)
+    expect(child).toMatchObject({
+      status: 200,
+      body: {
+        result: {
+          value: {
+            projections: {
+              values: {
+                forkLineage: {
+                  origin: 'fork',
+                  sourceSessionId: 'session-shared',
+                  workspaceReadOnly: true,
+                  authoredByViewer: true,
+                },
+              },
+            },
+          },
+        },
+      },
+    })
+    const shared = await read.answer('share-1', {
+      op: 'call', path: '/api/session/page', body: pageBody('session-shared'),
+    }, creator)
+    expect(shared).toMatchObject({
+      status: 200,
+      body: { result: { value: { projections: { values: { title: 'Child' } } } } },
+    })
+    expect(JSON.stringify(shared)).not.toContain('forkLineage')
+    read.close()
+  })
+
+  it('drops the same provider and subject in another tenant', async () => {
+    // The Relay admits by tenant, but ownership here is the whole subject: a viewer in tenant-b with
+    // the same subject id must not be handed tenant-a's child, nor be treated as its creator.
+    const { read } = await service()
+    const items = await listSessions(read, { ...creator, tenantId: 'tenant-b' })
+
+    expect(items.map(item => item.sessionId)).toEqual(['session-shared'])
+    expect(JSON.stringify(items)).not.toContain('forkLineage')
+    read.close()
+  })
+
+  it('drops another viewer’s child', async () => {
+    const { read } = await service({ ...creator, subjectId: 'ou_other' })
+
+    expect((await listSessions(read, creator)).map(item => item.sessionId)).toEqual(['session-shared'])
+    read.close()
+  })
+
+  it('refuses a child prompt until the execution ceiling is installed, and another viewer’s child always', async () => {
+    const { read } = await service()
+    const prompt: ViewerCallRequest = {
+      op: 'call',
+      path: '/api/session/prompt',
+      body: {
+        type: 'client-request',
+        rpcId: 'rpc-child-prompt',
+        method: 'session/prompt',
+        payload: { args: { request: { sessionId: 'session-child' } } },
+      },
+    }
+
+    // The gate is reachable in production now: a child prompt is decided by the registry, and with no
+    // ceiling installed the answer is the named refusal rather than an unreachable endpoint.
+    const ungated = await read.answer('share-1', prompt, creator)
+    expect(ungated).toMatchObject({ status: 403, body: { error: 'fork-ceiling-uninstalled' } })
+
+    // Another viewer's prompt never reaches the dispatch, whatever the ceiling state is.
+    const stranger = await read.answer('share-1', prompt, { ...creator, subjectId: 'ou_other' })
+    expect(stranger).toMatchObject({ status: 403, body: { error: 'fork-viewer-mismatch' } })
+    read.close()
+  })
+
+  it('lets the creator read its own child while refusing it to anyone else', async () => {
+    const { read } = await service()
+
+    // The creator's own child is readable; another viewer's read of it is not, and a session the
+    // registry does not know stays refused exactly as before.
+    const own = await read.answer('share-1', {
+      op: 'call', path: '/api/session/page', body: pageBody('session-child'),
+    }, creator)
+    expect(own).toMatchObject({ status: 200, body: { result: { ok: true } } })
+
+    const other = await read.answer('share-1', {
+      op: 'call', path: '/api/session/page', body: pageBody('session-child'),
+    }, { ...creator, tenantId: 'tenant-b' })
+    expect(other.body).toMatchObject({ result: { ok: false, error: {
+      code: 'remote-access/denied', details: { action: 'session/page', reason: 'liveshare/read-only' },
+    } } })
+    expect(JSON.stringify(other)).not.toContain('forkLineage')
+
+    const unknown = await read.answer('share-1', {
+      op: 'call', path: '/api/session/page', body: pageBody('session-other'),
+    }, creator)
+    expect(unknown.body).toMatchObject({ result: { ok: false, error: {
+      code: 'remote-access/denied', details: { action: 'session/page', reason: 'liveshare/read-only' },
+    } } })
+    read.close()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/readonly-fork-policy.spec.ts b/packages/experimental/liveshare/tests/readonly-fork-policy.spec.ts
new file mode 100644
index 0000000000..b3d3a75462
--- /dev/null
+++ b/packages/experimental/liveshare/tests/readonly-fork-policy.spec.ts
@@ -0,0 +1,126 @@
+/** Read-only fork authorization: binding, boundary, and the ceiling a child may never exceed. */
+
+import { describe, expect, it } from 'vitest'
+import {
+  decideFork,
+  modeAllowsSessionWrite,
+  parseSessionMode,
+  READ_ONLY_FORK_CEILING,
+  WRITE_FORK_CEILING,
+  type ForkRequest,
+  type ForkShareState,
+} from '../src/host/fork-policy.ts'
+
+const request: ForkRequest = {
+  shareId: 'share-1',
+  sourceSessionId: 'session-1',
+  requestKey: 'retry-key',
+}
+
+function share(overrides: Partial<ForkShareState> = {}): ForkShareState {
+  return {
+    shareId: 'share-1',
+    sessionId: 'session-1',
+    allowsFork: true,
+    viewerAdmitted: true,
+    stopped: false,
+    ...overrides,
+  }
+}
+
+describe('share mode parsing', () => {
+  it('reads the two tiers and nothing else', () => {
+    expect(parseSessionMode('view')).toBe('view')
+    expect(parseSessionMode('write')).toBe('write')
+    // Absent input states no tier; an older or unknown value states none either.
+    expect(parseSessionMode(undefined)).toBeUndefined()
+    expect(parseSessionMode(null)).toBeUndefined()
+    expect(parseSessionMode('owner')).toBeUndefined()
+    expect(parseSessionMode(3)).toBeUndefined()
+  })
+
+  it('includes writing the source session only in the write tier', () => {
+    expect(modeAllowsSessionWrite('write')).toBe(true)
+    expect(modeAllowsSessionWrite('view')).toBe(false)
+  })
+})
+
+describe('read-only fork authorization', () => {
+  it('refuses a fork for a share that is not registered at all', () => {
+    expect(decideFork(undefined, request, 0)).toMatchObject({ ok: false, code: 'share-not-found' })
+  })
+
+  it('forks at the requested boundary, or from the start when none is named', () => {
+    // A request that names no boundary forks the whole committed history from the start.
+    expect(decideFork(share(), request, 0)).toEqual({
+      ok: true,
+      boundary: 0,
+      ceiling: READ_ONLY_FORK_CEILING,
+      requestKey: 'retry-key',
+    })
+    expect(decideFork(share(), { ...request, atSeq: 7 }, 0)).toMatchObject({
+      ok: true,
+      boundary: 7,
+    })
+    // The Host passes a boundary the share never recorded through; session/fork owns its validation.
+    expect(decideFork(share(), { ...request, atSeq: 43 }, 0)).toMatchObject({
+      ok: true,
+      boundary: 43,
+    })
+  })
+
+  it('never forks a share that only granted viewing', () => {
+    expect(decideFork(share({ allowsFork: false }), request, 0)).toMatchObject({
+      ok: false,
+      code: 'fork-not-permitted',
+    })
+  })
+
+  it('refuses a viewer the share does not admit, including a selected share that names nobody', () => {
+    // An empty ACL alone must not read as organization-wide: this viewer was not admitted, so there is
+    // nothing to fork whoever they are, including a viewer the Relay refused on tenant grounds.
+    expect(decideFork(share({ viewerAdmitted: false }), request, 0)).toMatchObject({
+      ok: false,
+      code: 'viewer-not-authorized',
+    })
+  })
+
+  it('refuses a caller that names another session', () => {
+    // A viewer that can name a session id must not be able to fork one the share does not carry.
+    expect(decideFork(share(), { ...request,  sourceSessionId: 'session-2' }, 0)).toMatchObject({
+      ok: false,
+      code: 'source-session-mismatch',
+    })
+  })
+
+  it('refuses a stopped or expired share', () => {
+    expect(decideFork(share({ stopped: true }), request, 0)).toMatchObject({
+      ok: false,
+      code: 'share-stopped',
+    })
+    expect(decideFork(share({ expiresAt: '2026-09-11T00:00:00.000Z' }), request, Date.parse('2026-09-11T00:00:01.000Z')))
+      .toMatchObject({ ok: false, code: 'share-expired' })
+  })
+
+  it('admits a viewer the Relay admitted on an organization-wide share', () => {
+    expect(decideFork(share({ viewerAdmitted: true }), request, 0)).toMatchObject({ ok: true })
+  })
+
+  it('admits the view surface and denies the capabilities that reach the owner', () => {
+    const ceiling = READ_ONLY_FORK_CEILING
+    expect(ceiling.readOnly).toBe(true)
+    expect(ceiling.allowedTools).toEqual([
+      'read', 'read_image', 'glob', 'grep', 'present', 'todo_write', 'skill', 'web_search', 'web_fetch',
+    ])
+    expect(WRITE_FORK_CEILING.allowedTools).toEqual([...ceiling.allowedTools, 'edit', 'write'])
+    // A ceiling that can be edited is not a ceiling: these are refused at the seam, not configured.
+    for (const denied of ['bash', 'pwsh', 'cua', 'plugin_manager', 'schedule_create', 'write', 'edit']) {
+      expect(ceiling.deniedCapabilities).toContain(denied)
+      expect(ceiling.allowedTools).not.toContain(denied)
+    }
+    // The write tier's own two names leave the deny list with the tier that admits them.
+    expect(WRITE_FORK_CEILING.deniedCapabilities).not.toContain('write')
+    expect(WRITE_FORK_CEILING.deniedCapabilities).not.toContain('edit')
+    expect(WRITE_FORK_CEILING.deniedCapabilities).toContain('bash')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/readonly-fork-registry.spec.ts b/packages/experimental/liveshare/tests/readonly-fork-registry.spec.ts
new file mode 100644
index 0000000000..31f4de09bd
--- /dev/null
+++ b/packages/experimental/liveshare/tests/readonly-fork-registry.spec.ts
@@ -0,0 +1,119 @@
+/** Fork registry: creator isolation, revocation without deletion, and default-deny prompts. */
+
+import { mkdtempSync, readFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it } from 'vitest'
+import { READ_ONLY_FORK_CEILING } from '../src/host/fork-policy.ts'
+import { ForkRegistry, type ForkCreator } from '../src/host/fork-registry.ts'
+
+const creator: ForkCreator = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' }
+const other: ForkCreator = { ...creator, subjectId: 'ou_other' }
+
+function registry(): { readonly registry: ForkRegistry; readonly file: string } {
+  const file = join(mkdtempSync(join(tmpdir(), 'liveshare-forks-')), 'forks.json')
+  return { registry: new ForkRegistry(file), file }
+}
+
+function record(childSessionId: string, overrides: Partial<Parameters<ForkRegistry['record']>[0]> = {}) {
+  return {
+    childSessionId,
+    shareId: 'share-1',
+    sourceSessionId: 'session-1',
+    boundary: 42,
+    creator,
+    createdAt: '2026-09-11T00:00:00.000Z',
+    ...overrides,
+  }
+}
+
+describe('read-only fork registry', () => {
+  it('refuses every prompt until the execution ceiling is installed', async () => {
+    const { registry: forks } = registry()
+    await forks.record(record('child-1'))
+
+    expect(forks.allowsPrompt('child-1', creator)).toMatchObject({
+      ok: false,
+      code: 'fork-ceiling-uninstalled',
+    })
+    // Installed for this child only, which is what the caller does after registering its guard.
+    expect(forks.installEnforcement('child-1', READ_ONLY_FORK_CEILING)).toBe(true)
+    expect(forks.allowsPrompt('child-1', creator)).toEqual({ ok: true })
+  })
+
+  it('never opens a sibling, a cold-loaded child, or a released child', async () => {
+    const { registry: forks, file } = registry()
+    await forks.record(record('child-1'))
+    await forks.record(record('child-2'))
+    forks.installEnforcement('child-1', READ_ONLY_FORK_CEILING)
+
+    // One child's guard says nothing about its sibling: a per-host flag would have opened this one.
+    expect(forks.allowsPrompt('child-2', creator)).toMatchObject({
+      ok: false,
+      code: 'fork-ceiling-uninstalled',
+    })
+    // A child known from the file after a restart has no live guard, so it refuses until one is
+    // registered again and recorded.
+    const reopened = new ForkRegistry(file)
+    expect(reopened.allowsPrompt('child-1', creator)).toMatchObject({
+      ok: false,
+      code: 'fork-ceiling-uninstalled',
+    })
+    // Disposing the guard returns exactly that child to refusing, while the other keeps its own state.
+    forks.releaseEnforcement('child-1')
+    expect(forks.allowsPrompt('child-1', creator)).toMatchObject({
+      ok: false,
+      code: 'fork-ceiling-uninstalled',
+    })
+    // An unknown child is refused as unknown, and its install is reported as a failure.
+    expect(forks.installEnforcement('child-none', READ_ONLY_FORK_CEILING)).toBe(false)
+  })
+
+  it('shows one viewer only its own children', async () => {
+    const { registry: forks } = registry()
+    await forks.record(record('child-1'))
+    await forks.record(record('child-2', { creator: other }))
+
+    expect(forks.listForCreator(creator).map(entry => entry.childSessionId)).toEqual(['child-1'])
+    expect(forks.listForCreator(other).map(entry => entry.childSessionId)).toEqual(['child-2'])
+    // The source owner sees every child of its share, whoever created it.
+    expect(forks.listForShare('share-1').map(entry => entry.childSessionId).sort())
+      .toEqual(['child-1', 'child-2'])
+  })
+
+  it('keeps a child, and its record, when the source share is revoked', async () => {
+    const { registry: forks, file } = registry()
+    await forks.record(record('child-1'))
+    forks.installEnforcement('child-1', READ_ONLY_FORK_CEILING)
+    await forks.revokeShare('share-1', '2026-09-11T01:00:00.000Z')
+
+    const record_ = forks.find('child-1')
+    expect(record_?.revokedAt).toBe('2026-09-11T01:00:00.000Z')
+    expect(forks.allowsPrompt('child-1', creator)).toMatchObject({ ok: false, code: 'fork-source-revoked' })
+    // Revocation is recorded, not destructive: the row is still on disk for history.
+    expect(readFileSync(file, 'utf8')).toContain('child-1')
+    expect(forks.listForShare('share-1')).toHaveLength(1)
+  })
+
+  it('refuses another viewer’s child and an unknown child', async () => {
+    const { registry: forks } = registry()
+    await forks.record(record('child-1'))
+    forks.installEnforcement('child-1', READ_ONLY_FORK_CEILING)
+
+    expect(forks.allowsPrompt('child-1', other)).toMatchObject({ ok: false, code: 'fork-viewer-mismatch' })
+    expect(forks.allowsPrompt('missing', creator)).toMatchObject({ ok: false, code: 'fork-unknown-child' })
+  })
+
+  it('survives a restart with its records and keeps refusing without a ceiling', async () => {
+    const { registry: forks, file } = registry()
+    await forks.record(record('child-1'))
+
+    const reopened = new ForkRegistry(file)
+    expect(reopened.find('child-1')?.shareId).toBe('share-1')
+    // The ceiling is a property of the running Host, so a restart refuses until it is installed again.
+    expect(reopened.allowsPrompt('child-1', creator)).toMatchObject({
+      ok: false,
+      code: 'fork-ceiling-uninstalled',
+    })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/readonly-fork-tool-execution.spec.ts b/packages/experimental/liveshare/tests/readonly-fork-tool-execution.spec.ts
new file mode 100644
index 0000000000..8db2937b83
--- /dev/null
+++ b/packages/experimental/liveshare/tests/readonly-fork-tool-execution.spec.ts
@@ -0,0 +1,969 @@
+/**
+ * A fork child's limit driven through the real tool runtime, the real local filesystem, and the
+ * shipped `read`/`write` tools.
+ *
+ * Everything the child's execution touches here is production code: `ToolRuntime` runs the pipeline
+ * and its monotonic guard stage, `LocalFileSystem` resolves the paths, and the tools are the ones the
+ * deployment registers. A permitted read must reach the tool body and return file content; a path
+ * outside the granted workspace, a symlink escape, a write, a permitted name the child registered for
+ * itself, and a released limit must all be refused before anything runs.
+ */
+
+import {
+  existsSync,
+  mkdirSync,
+  mkdtempSync,
+  readFileSync,
+  rmSync,
+  symlinkSync,
+  writeFileSync,
+} from 'node:fs'
+import { tmpdir } from 'node:os'
+import { dirname, join } from 'node:path'
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+import { provideWorkingDirectoryFixture } from '@deepseek-ai/dsh-agent-loop-testkit'
+import { Context } from '@deepseek-ai/cordis'
+import type { Agent } from '@deepseek-ai/dsh-agent'
+import { createScope, type Scope } from '@deepseek-ai/dsh-scope'
+import { SESSION_FORMAT_VERSION, Session, SessionId } from '@deepseek-ai/dsh-session'
+import type { FsTarget } from '@deepseek-ai/dsh-fs'
+import { ToolCallId } from '@deepseek-ai/dsh-llm'
+import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
+import ToolRuntime, { defineTool, type ParameterSchemaSpec } from '@deepseek-ai/dsh-tools'
+import LocalFileSystem from '@deepseek-ai/dsh-fs-local'
+import * as ToolFs from '@deepseek-ai/dsh-tool-fs'
+import * as FsObservationPolicy from '@deepseek-ai/dsh-fs-observation-policy'
+import { installForkEnforcement, installSourceSessionAccess } from '../src/host/fork-enforcement.ts'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import { forkToolGuard, installChildEnforcement, type ForkToolExecution } from '../src/host/fork-tool-guard.ts'
+import { READ_ONLY_FORK_CEILING } from '../src/host/fork-policy.ts'
+import { describeSharedTool } from '../src/host/shared-tools.ts'
+import { executeOneTool } from './tool-call.ts'
+import * as NativeToolExecutor from '@deepseek-ai/dsh-tool-executor-native'
+
+const childSessionId = 'child-1'
+const viewer = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' }
+const testToolSignal = new AbortController().signal
+
+/** The child's live handle: the loop's own object carries the scope it registered into. */
+type ChildAgent = Agent & { readonly ctx: Context }
+
+/** A session-scoped Agent stand-in the real tool runtime can drive without an AgentLoop. */
+function standInAgent(id: SessionId, cwd: string): Omit<Agent, 'ctx'> {
+  const session = Session.create(id, [], {
+    version: SESSION_FORMAT_VERSION, id, createdAt: 0, cwd, isSeeded: false,
+  })
+  const unsupported = (): never => { throw new Error('this test Agent does not support Inbox mutations') }
+  return {
+    id,
+    options: {},
+    model: { current: () => undefined, select: () => {} },
+    session,
+    inbox: {
+      nextTurn: [], nextStep: [], clear: unsupported, append: unsupported,
+      prepend: unsupported, replace: unsupported, remove: unsupported, splice: unsupported,
+    },
+    status: 'idle',
+    send: () => {},
+    followup: () => {},
+    steer: () => {},
+    inject: () => {},
+    cancel: () => {},
+    whenIdle: () => Promise.resolve(),
+    runMaintenance: task => task(new AbortController().signal),
+  }
+}
+
+let root: string
+let outside: string
+/** The temp tree this test allocated, so cleanup removes exactly what the test owns. */
+let tree: string
+let granted: FsTarget
+let ctx: Context
+let scope: Scope
+let child: ChildAgent
+let forks: ForkRegistry
+let calls = 0
+
+/** The host's own argument reader: each tool's own arguments name its paths. */
+function describeTool(execution: ForkToolExecution) {
+  return describeSharedTool(execution.name, execution.arguments)
+}
+
+/** Install the child's limit against the real capabilities this context provides. */
+function installLimit(): (() => void) | undefined {
+  return installForkEnforcement({
+    childSessionId,
+    childContext: scope.ctx,
+    childScope: child,
+    grantedRoot: granted,
+    cwd: root,
+    resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: child.session.id }),
+    fs: ctx.fs,
+    tools: ctx.tools,
+    forks,
+    describe: describeTool,
+  })
+}
+
+/** Run one tool as the child, exactly as the loop would. */
+function call(name: string, args: unknown) {
+  calls += 1
+  return executeOneTool(ctx, {
+    signal: testToolSignal,
+    callId: ToolCallId(`call-${String(calls)}`),
+    name,
+    arguments: args,
+    agent: child,
+  })
+}
+
+/** The model-facing text of one result. */
+function text(result: { readonly content: readonly { readonly type: string; readonly text?: string }[] }): string {
+  return result.content.filter(block => block.type === 'text').map(block => block.text).join('')
+}
+
+beforeEach(async () => {
+  // The granted root is nested so its own ancestor can be replaced in one of the tests below.
+  tree = mkdtempSync(join(tmpdir(), 'liveshare-child-'))
+  root = join(tree, 'granted', 'leaf')
+  mkdirSync(root, { recursive: true })
+  outside = mkdtempSync(join(tmpdir(), 'liveshare-child-outside-'))
+  writeFileSync(join(root, 'inside.ts'), 'export const inside = 1\n')
+  writeFileSync(join(outside, 'secret.txt'), 'owner-only\n')
+  // A link the child can name from inside its workspace, whose target is not inside it.
+  symlinkSync(join(outside, 'secret.txt'), join(root, 'link.txt'))
+
+  ctx = new Context()
+  provideWorkingDirectoryFixture(ctx, root)
+  await ctx.plugin(SystemPrompt)
+  await ctx.plugin(ToolRuntime)
+  await ctx.plugin(NativeToolExecutor)
+  await ctx.plugin(LocalFileSystem, { cwd: root })
+  await ctx.plugin(ToolFs)
+
+  const key: Omit<ChildAgent, 'ctx'> = standInAgent(SessionId(childSessionId), root)
+  let minted: Scope | undefined
+  await ctx.plugin(Object.assign(
+    (inner: Context) => { minted = createScope(inner, key) },
+    { inject: ['tools', 'fs', 'systemPrompt'] },
+  ))
+  if (minted === undefined) throw new Error('the child scope was not minted')
+  scope = minted
+  child = Object.assign(key, { ctx: scope.ctx })
+  forks = new ForkRegistry(join(root, '.forks.json'))
+  await forks.record({
+    childSessionId,
+    shareId: 'share-1',
+    sourceSessionId: 'session-1',
+    boundary: 3,
+    creator: viewer,
+    createdAt: '2026-09-12T00:00:00.000Z',
+  })
+  granted = await ctx.fs.resolve(root)
+})
+
+afterEach(async () => {
+  try {
+    await scope.dispose()
+    await ctx.fiber.dispose()
+  } finally {
+    // The whole tree this test allocated, removed even when disposal failed: a test must not leave
+    // anything behind, and only the roots it created are touched.
+    rmSync(tree, { recursive: true, force: true })
+    rmSync(outside, { recursive: true, force: true })
+  }
+})
+
+describe('fork child tool execution', () => {
+  it('preserves read-before-write observations for a writable child', async () => {
+    await ctx.plugin(FsObservationPolicy)
+    const dispose = installForkEnforcement({
+      childSessionId, childContext: scope.ctx, childScope: child, grantedRoot: granted, cwd: root,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: child.session.id }),
+      fs: ctx.fs, tools: ctx.tools, forks, describe: describeTool, write: true,
+    })
+    expect(dispose).toBeDefined()
+    const path = join(root, 'inside.ts')
+    expect((await call('write', { file_path: path, content: 'unread' })).isError).toBe(true)
+    expect((await call('read', { file_path: path })).isError).toBe(false)
+    expect((await call('write', { file_path: path, content: 'observed' })).isError).toBe(false)
+    expect(readFileSync(path, 'utf8')).toBe('observed')
+    dispose?.()
+  })
+  it('denies writes after the current share is narrowed and denies every tool after revocation', async () => {
+    let writable = true
+    const dispose = installForkEnforcement({
+      childSessionId, childContext: scope.ctx, childScope: child, grantedRoot: granted, cwd: root,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: child.session.id }),
+      fs: ctx.fs, tools: ctx.tools, forks, describe: describeTool, write: true,
+      authorized: tool => tool !== 'write' || writable,
+    })
+    expect(dispose).toBeDefined()
+    const path = join(root, 'child-write.txt')
+    expect((await call('write', { file_path: path, content: 'before' })).isError).toBe(false)
+    writable = false
+    expect((await call('write', { file_path: path, content: 'after' })).isError).toBe(true)
+    expect(readFileSync(path, 'utf8')).toBe('before')
+    expect((await call('read', { file_path: path })).isError).toBe(false)
+    await forks.revokeShare('share-1', new Date().toISOString())
+    expect((await call('read', { file_path: path })).isError).toBe(true)
+    expect((await call('write', { file_path: path, content: 'revoked' })).isError).toBe(true)
+    expect(readFileSync(path, 'utf8')).toBe('before')
+    dispose?.()
+  })
+  it('allows a real read inside the granted workspace and returns the file', async () => {
+    expect(installLimit()).toBeDefined()
+    expect(forks.enforcementInstalled(childSessionId)).toBe(true)
+
+    const result = await call('read', { file_path: join(root, 'inside.ts') })
+
+    expect(result.isError).toBe(false)
+    expect(text(result)).toContain('export const inside = 1')
+    // The read renders the file the child was granted under its canonical path.
+    const target = await ctx.fs.resolve(join(root, 'inside.ts'))
+    expect(text(result)).toContain(ctx.fs.processPath(target))
+    expect(JSON.stringify(result)).not.toContain('/dev/fd')
+  })
+
+  it('reinstalls a released limit on the same child without retaining an obsolete denial', async () => {
+    const path = join(root, 'inside.ts')
+    const first = installLimit()
+    expect(first).toBeDefined()
+    expect((await call('read', { file_path: path })).isError).toBe(false)
+
+    first?.()
+    expect((await call('read', { file_path: path })).isError).toBe(true)
+    const second = installLimit()
+    expect(second).toBeDefined()
+    try {
+      // An obsolete disposer must not revoke its successor's enforcement record.
+      first?.()
+      expect(forks.enforcementInstalled(childSessionId)).toBe(true)
+      const result = await call('read', { file_path: path })
+      expect(result.isError).toBe(false)
+      expect(text(result)).toContain('export const inside = 1')
+      expect((await call('read', { file_path: join(outside, 'secret.txt') })).isError).toBe(true)
+      expect((await call('write', { file_path: path, content: 'unconfined' })).isError).toBe(true)
+      expect(readFileSync(path, 'utf8')).toBe('export const inside = 1\n')
+    } finally {
+      second?.()
+    }
+    expect((await call('read', { file_path: path })).isError).toBe(true)
+  })
+
+  it('refuses an outside path and a symlink escape without running the tool body', async () => {
+    installLimit()
+
+    const outsideResult = await call('read', { file_path: join(outside, 'secret.txt') })
+    expect(outsideResult.isError).toBe(true)
+    expect(text(outsideResult)).toMatch(/workspace it was granted/u)
+    expect(text(outsideResult)).not.toContain('owner-only')
+
+    // The path is inside the workspace; the file it resolves to is not.
+    const escaped = await call('read', { file_path: join(root, 'link.txt') })
+    expect(escaped.isError).toBe(true)
+    expect(text(escaped)).toMatch(/workspace it was granted/u)
+    expect(text(escaped)).not.toContain('owner-only')
+  })
+
+  it('refuses the shipped write and edit tools and leaves the workspace unchanged', async () => {
+    installLimit()
+    const target = join(root, 'written.txt')
+
+    const result = await call('write', { file_path: target, content: 'written by the child\n' })
+    expect(result.isError).toBe(true)
+    expect(text(result)).toMatch(/may not use write/u)
+    expect(existsSync(target)).toBe(false)
+
+    const edited = await call('edit', {
+      file_path: join(root, 'inside.ts'), old_string: 'export const inside = 1', new_string: 'export const inside = 2',
+    })
+    expect(edited.isError).toBe(true)
+    expect(text(edited)).toMatch(/may not use edit/u)
+    expect(readFileSync(join(root, 'inside.ts'), 'utf8')).toBe('export const inside = 1\n')
+  })
+
+  it.each(['grep', 'glob'])('confines %s to the granted workspace and supplies its default root', async (name) => {
+    const calls: unknown[] = []
+    ctx.tools.register(defineTool({
+      name,
+      description: 'a deployment search fixture',
+      parameters: {
+        pattern: { type: 'string', required: true, description: 'search pattern' },
+        path: { type: 'string', description: 'optional search root' },
+      },
+      output: { schema: { type: 'string' }, render: (_args, value) => [{ type: 'text', text: value }] },
+      execute: (args) => { calls.push(args); return Promise.resolve('search ran') },
+    }))
+    expect(installLimit()).toBeDefined()
+    const canonicalRoot = ctx.fs.processPath(await ctx.fs.resolve(root))
+
+    // A pathless search reads the Session's working directory, which the replacement supplies explicitly.
+    const pathless = await call(name, { pattern: '**/*.ts' })
+    expect(pathless.isError).toBe(false)
+    expect(calls.at(-1)).toEqual({ pattern: '**/*.ts', path: canonicalRoot })
+
+    // A named directory inside the grant is resolved and handed over canonically.
+    const inside = join(root, 'inside.ts')
+    const named = await call(name, { pattern: 'inside', path: dirname(inside) })
+    expect(named.isError).toBe(false)
+    expect(calls.at(-1)).toEqual({ pattern: 'inside', path: ctx.fs.processPath(await ctx.fs.resolve(dirname(inside))) })
+
+    // Outside the grant the guard refuses before the fixture body runs.
+    const before = calls.length
+    const outsideSearch = await call(name, { pattern: 'secret', path: outside })
+    expect(outsideSearch.isError).toBe(true)
+    expect(text(outsideSearch)).toMatch(/workspace it was granted/u)
+    expect(calls.length).toBe(before)
+  })
+
+  it('confines image reads and deliveries, and admits the tools with no file effect', async () => {
+    const calls: { tool: string; args: unknown }[] = []
+    const fixture = (name: string, parameters: ParameterSchemaSpec) => ctx.tools.register(defineTool({
+      name,
+      description: `a deployment ${name} fixture`,
+      parameters,
+      output: { schema: { type: 'string' }, render: (_args, value) => [{ type: 'text', text: value }] },
+      execute: (args) => { calls.push({ tool: name, args }); return Promise.resolve(`${name} ran`) },
+    }))
+    fixture('read_image', { file_path: { type: 'string', required: true } })
+    fixture('present', {
+      files: {
+        type: 'array', required: true,
+        items: {
+          type: 'object', additionalProperties: false,
+          properties: { path: { type: 'string', required: true }, description: { type: 'string' } },
+        },
+      },
+    })
+    for (const name of ['todo_write', 'skill', 'web_search', 'web_fetch']) fixture(name, {})
+    expect(installLimit()).toBeDefined()
+
+    await ctx.fs.resolve(root)
+    const image = await call('read_image', { file_path: join(root, 'inside.ts') })
+    expect(image.isError).toBe(false)
+    expect(calls.at(-1)).toEqual({
+      tool: 'read_image', args: { file_path: ctx.fs.processPath(await ctx.fs.resolve(join(root, 'inside.ts'))) },
+    })
+    const outsideImage = await call('read_image', { file_path: join(outside, 'secret.txt') })
+    expect(outsideImage.isError).toBe(true)
+    expect(text(outsideImage)).toMatch(/workspace it was granted/u)
+
+    const delivered = await call('present', {
+      files: [{ path: join(root, 'inside.ts'), description: 'inside' }],
+    })
+    expect(delivered.isError).toBe(false)
+    expect(calls.at(-1)).toEqual({
+      tool: 'present',
+      args: { files: [{ path: ctx.fs.processPath(await ctx.fs.resolve(join(root, 'inside.ts'))), description: 'inside' }] },
+    })
+    // One entry outside the grant refuses the whole delivery: nothing is presented.
+    const before = calls.length
+    const escaped = await call('present', {
+      files: [{ path: join(root, 'inside.ts') }, { path: join(outside, 'secret.txt') }],
+    })
+    expect(escaped.isError).toBe(true)
+    expect(text(escaped)).toMatch(/workspace it was granted/u)
+    expect(calls.length).toBe(before)
+
+    // A tool with no local file effect needs no path, and its arguments reach it unchanged.
+    for (const name of ['todo_write', 'skill', 'web_search', 'web_fetch']) {
+      const result = await call(name, { value: name })
+      expect(result.isError).toBe(false)
+      expect(calls.at(-1)).toEqual({ tool: name, args: { value: name } })
+    }
+  })
+
+  it('refuses every capability the shared surface does not name', async () => {
+    let ran = 0
+    for (const name of ['bash', 'pwsh', 'cua', 'plugin_manager', 'schedule_create', 'ghost']) {
+      ctx.tools.register(defineTool({
+        name,
+        description: `a deployment ${name} fixture`,
+        parameters: {},
+        output: { schema: { type: 'string' }, render: (_args, value) => [{ type: 'text', text: value }] },
+        execute: () => { ran += 1; return Promise.resolve('ran') },
+      }))
+    }
+    expect(installLimit()).toBeDefined()
+
+    for (const name of ['bash', 'pwsh', 'cua', 'plugin_manager', 'schedule_create', 'ghost']) {
+      const result = await call(name, {})
+      expect(result.isError).toBe(true)
+      expect(text(result)).toContain(`may not use ${name}`)
+    }
+    // Registration alone is not permission: no body ran.
+    expect(ran).toBe(0)
+  })
+
+  it('refuses a relative path that leaves the grant and accepts one that stays inside it', async () => {
+    installLimit()
+    const inside = await call('read', { file_path: 'inside.ts' })
+    expect(inside.isError).toBe(false)
+    expect(text(inside)).toContain('export const inside = 1')
+
+    const escape = await call('read', { file_path: join('..', 'secret.txt') })
+    expect(escape.isError).toBe(true)
+    expect(text(escape)).toMatch(/workspace it was granted/u)
+  })
+
+  it('refuses a search root that is a link out of the grant', async () => {
+    const linked = join(root, 'linked-out')
+    symlinkSync(outside, linked)
+    const calls: unknown[] = []
+    ctx.tools.register(defineTool({
+      name: 'glob',
+      description: 'a deployment search fixture',
+      parameters: {
+        pattern: { type: 'string', required: true },
+        path: { type: 'string' },
+      },
+      output: { schema: { type: 'string' }, render: (_args, value) => [{ type: 'text', text: value }] },
+      execute: (args) => { calls.push(args); return Promise.resolve('search ran') },
+    }))
+    expect(installLimit()).toBeDefined()
+
+    const result = await call('glob', { pattern: '**/*.txt', path: linked })
+
+    expect(result.isError).toBe(true)
+    expect(text(result)).toMatch(/workspace it was granted/u)
+    expect(calls).toEqual([])
+  })
+
+  it('refuses a permitted name the child tries to register for itself', () => {
+    installLimit()
+    const marker = join(outside, 'child-local-read-ran.txt')
+    // The host's confined read holds the name in this child's own layer, so a child cannot put a
+    // different definition under it — its own `read` is refused at registration, not at dispatch.
+    expect(() => scope.ctx.tools.register(defineTool({
+      name: 'read',
+      description: 'a child-local read',
+      parameters: { file_path: { type: 'string', required: true, description: 'path to read' } },
+      output: {
+        schema: { type: 'string' },
+        render: (_args, value) => [{ type: 'text', text: value }],
+      },
+      execute: () => {
+        writeFileSync(marker, 'the child-local definition ran\n')
+        return Promise.resolve('the child-local definition ran')
+      },
+    }))).toThrow(/already registered/u)
+    expect(existsSync(marker)).toBe(false)
+  })
+
+  it('sandboxes a viewer-started turn while its layer is mounted', async () => {
+    // A shared Session: a viewer-started turn reads only inside the granted workspace and can use nothing
+    // this host did not install. Removing the layer is what restores the Session's own tools.
+    const key = standInAgent(SessionId('session-shared-live'), root)
+    let sharedScope!: Scope
+    await ctx.plugin(Object.assign(
+      (inner: Context) => { sharedScope = createScope(inner, key) },
+      { inject: ['tools', 'fs', 'systemPrompt'] },
+    ))
+    const shared = Object.assign(key, { ctx: sharedScope.ctx })
+    const searchCalls: unknown[] = []
+    for (const name of ['glob', 'grep']) {
+      ctx.tools.register(defineTool({
+        name,
+        description: 'a deployment search fixture',
+        parameters: {
+          pattern: { type: 'string', required: true },
+          path: { type: 'string' },
+        },
+        output: { schema: { type: 'string' }, render: (_args, value) => [{ type: 'text', text: value }] },
+        execute: (args) => { searchCalls.push({ name, args }); return Promise.resolve('search ran') },
+      }))
+    }
+    const presented: unknown[] = []
+    ctx.tools.register(defineTool({
+      name: 'present',
+      description: 'a deployment delivery fixture',
+      parameters: {
+        files: {
+          type: 'array', required: true,
+          items: {
+            type: 'object', additionalProperties: false,
+            properties: { path: { type: 'string', required: true }, description: { type: 'string' } },
+          },
+        },
+      },
+      output: { schema: { type: 'string' }, render: (_args, value) => [{ type: 'text', text: value }] },
+      execute: (args) => { presented.push(args); return Promise.resolve('present ran') },
+    }))
+    const todos: unknown[] = []
+    ctx.tools.register(defineTool({
+      name: 'todo_write',
+      description: 'a deployment todo fixture',
+      parameters: {},
+      output: { schema: { type: 'string' }, render: (_args, value) => [{ type: 'text', text: value }] },
+      execute: (args) => { todos.push(args); return Promise.resolve('todo ran') },
+    }))
+    ctx.tools.register(defineTool({
+      name: 'danger',
+      description: 'a capability the sandbox does not install',
+      parameters: {},
+      output: { schema: { type: 'string' }, render: (_args, value) => [{ type: 'text', text: value }] },
+      execute: () => Promise.resolve('ran'),
+    }))
+    const access = installSourceSessionAccess({
+      sessionId: 'session-shared-live',
+      context: sharedScope.ctx,
+      scope: shared,
+      grantedRoot: granted,
+      cwd: root,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: shared.session.id }),
+      fs: ctx.fs,
+      tools: ctx.tools,
+      describe: describeTool,
+      write: { mayWrite: () => true },
+      confinedExecution: () => true,
+    })
+    expect(access.readConfined).toBe(true)
+    const run = (name: string, args: unknown) => executeOneTool(ctx, {
+      signal: testToolSignal,
+      callId: ToolCallId(`shared-${name}`),
+      name,
+      arguments: args,
+      agent: shared,
+    })
+    const outsideFile = join(outside, 'secret.txt')
+
+    // A viewer-started turn may run nothing this installation did not replace.
+    const danger = await run('danger', {})
+    expect(danger.isError).toBe(true)
+    expect(text(danger)).toMatch(/may not use danger/u)
+    expect((await run('read', { file_path: join(root, 'inside.ts') })).isError).toBe(false)
+    const readOutside = await run('read', { file_path: outsideFile })
+    expect(readOutside.isError).toBe(true)
+    expect(text(readOutside)).toMatch(/not inside the workspace this session was granted/u)
+    expect(text(readOutside)).not.toContain('owner-only')
+    const escape = join(dirname(root), 'shared-escape.txt')
+    expect((await run('write', { file_path: escape, content: 'no\n' })).isError).toBe(true)
+    expect(existsSync(escape)).toBe(false)
+    // This Session's layer is write-capable, so the bounded edit runs and stays inside the grant.
+    const edited = await run('edit', {
+      file_path: join(root, 'inside.ts'), old_string: 'export const inside = 1', new_string: 'export const inside = 2',
+    })
+    expect(edited.isError).toBe(false)
+    expect(readFileSync(join(root, 'inside.ts'), 'utf8')).toBe('export const inside = 2\n')
+    const outsideEdit = await run('edit', {
+      file_path: outsideFile, old_string: 'owner-only', new_string: 'changed',
+    })
+    expect(outsideEdit.isError).toBe(true)
+    expect(readFileSync(outsideFile, 'utf8')).toBe('owner-only\n')
+
+    // The read surface is the shared surface: search, delivery, and the no-effect tools run, and each
+    // declared path is resolved before the tool sees it.
+    const canonicalRoot = ctx.fs.processPath(await ctx.fs.resolve(root))
+    expect((await run('glob', { pattern: '**/*.ts' })).isError).toBe(false)
+    expect(searchCalls.at(-1)).toEqual({ name: 'glob', args: { pattern: '**/*.ts', path: canonicalRoot } })
+    expect((await run('grep', { pattern: 'inside', path: root })).isError).toBe(false)
+    expect(searchCalls.at(-1)).toEqual({ name: 'grep', args: { pattern: 'inside', path: canonicalRoot } })
+    const searchedOutside = await run('grep', { pattern: 'secret', path: outside })
+    expect(searchedOutside.isError).toBe(true)
+    expect(text(searchedOutside)).toMatch(/not inside the workspace this session was granted/u)
+    expect((await run('present', {
+      files: [{ path: join(root, 'inside.ts'), description: 'inside' }],
+    })).isError).toBe(false)
+    expect(presented.at(-1)).toEqual({
+      files: [{ path: ctx.fs.processPath(await ctx.fs.resolve(join(root, 'inside.ts'))), description: 'inside' }],
+    })
+    expect((await run('present', { files: [{ path: outsideFile }] })).isError).toBe(true)
+    expect((await run('todo_write', { todos: [] })).isError).toBe(false)
+    expect(todos.at(-1)).toEqual({ todos: [] })
+
+    // With no layer mounted the Session keeps its own tools again.
+    access.dispose()
+    expect((await run('danger', {})).isError).toBe(false)
+    expect((await run('read', { file_path: outsideFile })).isError).toBe(false)
+    expect(text(await run('read', { file_path: outsideFile }))).toContain('owner-only')
+    expect((await run('grep', { pattern: 'secret', path: outside })).isError).toBe(false)
+  })
+
+  it('leaves an owner-started turn on the deployment’s own tools', async () => {
+    // The layer belongs to the Session, but the share bounds only the turns a viewer starts: the owner
+    // keeps the deployment's shell and its unbounded filesystem tools while every share is active.
+    const key = standInAgent(SessionId('session-owner-turn'), root)
+    let sharedScope!: Scope
+    await ctx.plugin(Object.assign(
+      (inner: Context) => { sharedScope = createScope(inner, key) },
+      { inject: ['tools', 'fs', 'systemPrompt'] },
+    ))
+    const shared = Object.assign(key, { ctx: sharedScope.ctx })
+    let viewerTurn = false
+    const bashCalls: unknown[] = []
+    ctx.tools.register(defineTool({
+      name: 'bash',
+      description: 'a deployment shell fixture',
+      parameters: { command: { type: 'string', required: true } },
+      output: { schema: { type: 'string' }, render: (_args, value) => [{ type: 'text', text: value }] },
+      execute: (args) => {
+        bashCalls.push(args)
+        return Promise.resolve('bash ran')
+      },
+    }))
+    const access = installSourceSessionAccess({
+      sessionId: 'session-owner-turn',
+      context: sharedScope.ctx,
+      scope: shared,
+      grantedRoot: granted,
+      cwd: root,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: shared.session.id }),
+      fs: ctx.fs,
+      tools: ctx.tools,
+      describe: describeTool,
+      write: { mayWrite: () => true },
+      confinedExecution: () => viewerTurn,
+    })
+    expect(access.readConfined).toBe(true)
+    let calls = 0
+    const run = (name: string, args: unknown) => executeOneTool(ctx, {
+      signal: testToolSignal,
+      callId: ToolCallId(`owner-${String(++calls)}`),
+      name,
+      arguments: args,
+      agent: shared,
+    })
+    const outsideFile = join(outside, 'secret.txt')
+
+    // The owner's turn runs the deployment's toolchain: the shell runs, and the native filesystem tools
+    // are not held to the granted root.
+    expect((await run('bash', { command: 'echo hi' })).isError).toBe(false)
+    expect(text(await run('bash', { command: 'echo hi' }))).toContain('bash ran')
+    expect(text(await run('read', { file_path: outsideFile }))).toContain('owner-only')
+    const ownerWrite = join(outside, 'owner-write.txt')
+    expect((await run('write', { file_path: ownerWrite, content: 'owner\n' })).isError).toBe(false)
+    expect(readFileSync(ownerWrite, 'utf8')).toBe('owner\n')
+    // The native edit replacement is a pass-through for an owner turn too.
+    const ownerEdit = join(outside, 'owner-edit.txt')
+    writeFileSync(ownerEdit, 'owner-only\n')
+    expect((await run('read', { file_path: ownerEdit })).isError).toBe(false)
+    expect((await run('edit', {
+      file_path: ownerEdit, old_string: 'owner-only', new_string: 'owner-edited',
+    })).isError).toBe(false)
+    expect(readFileSync(ownerEdit, 'utf8')).toBe('owner-edited\n')
+
+    // A viewer-started turn of the same mounted layer is confined again: the shell is refused and reads
+    // stop at the granted root.
+    viewerTurn = true
+    const bash = await run('bash', { command: 'echo hi' })
+    expect(bash.isError).toBe(true)
+    expect(text(bash)).toMatch(/may not use bash/u)
+    const outsideRead = await run('read', { file_path: outsideFile })
+    expect(outsideRead.isError).toBe(true)
+    expect(text(outsideRead)).not.toContain('owner-only')
+    const viewerWrite = join(outside, 'viewer-write.txt')
+    expect((await run('write', { file_path: viewerWrite, content: 'no\n' })).isError).toBe(true)
+    expect(existsSync(viewerWrite)).toBe(false)
+
+    // Disposing the layer restores the Session's own tools whether or not a viewer turn is recorded.
+    access.dispose()
+    expect((await run('bash', { command: 'echo hi' })).isError).toBe(false)
+    expect(text(await run('read', { file_path: outsideFile }))).toContain('owner-only')
+  })
+
+  it('refuses write and edit on a view-tier shared Session', async () => {
+    const key = standInAgent(SessionId('session-view-live'), root)
+    let viewScope!: Scope
+    await ctx.plugin(Object.assign(
+      (inner: Context) => { viewScope = createScope(inner, key) },
+      { inject: ['tools', 'fs', 'systemPrompt'] },
+    ))
+    const view = Object.assign(key, { ctx: viewScope.ctx })
+    const access = installSourceSessionAccess({
+      sessionId: 'session-view-live',
+      context: viewScope.ctx,
+      scope: view,
+      grantedRoot: granted,
+      cwd: root,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: view.session.id }),
+      fs: ctx.fs,
+      tools: ctx.tools,
+      describe: describeTool,
+    })
+    expect(access).toMatchObject({ readConfined: true, writeConfined: false })
+    const run = (name: string, args: unknown) => executeOneTool(ctx, {
+      signal: testToolSignal,
+      callId: ToolCallId(`view-${name}`),
+      name,
+      arguments: args,
+      agent: view,
+    })
+
+    expect((await run('read', { file_path: join(root, 'inside.ts') })).isError).toBe(false)
+    const written = await run('write', { file_path: join(root, 'view-write.txt'), content: 'no\n' })
+    expect(written.isError).toBe(true)
+    expect(text(written)).toMatch(/may not use write/u)
+    expect(existsSync(join(root, 'view-write.txt'))).toBe(false)
+    const edited = await run('edit', {
+      file_path: join(root, 'inside.ts'), old_string: 'export const inside = 1', new_string: 'export const inside = 2',
+    })
+    expect(edited.isError).toBe(true)
+    expect(text(edited)).toMatch(/may not use edit/u)
+    expect(readFileSync(join(root, 'inside.ts'), 'utf8')).toBe('export const inside = 1\n')
+    access.dispose()
+  })
+
+  it('writes inside the granted workspace and refuses everything outside it', async () => {
+    // A write-capable scope: the host installs its own bounded write, so the real write tool writes the
+    // file the grant contains and nothing else.
+    const writer = { id: 'child-writer', session: { header: { cwd: root } } }
+    let writerScope!: Scope
+    await ctx.plugin(Object.assign(
+      (inner: Context) => { writerScope = createScope(inner, writer) },
+      { inject: ['tools', 'fs', 'systemPrompt'] },
+    ))
+    await forks.record({
+      childSessionId: 'child-writer',
+      shareId: 'share-1',
+      sourceSessionId: 'session-1',
+      boundary: 3,
+      creator: { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' },
+      createdAt: '2026-09-12T00:00:00.000Z',
+    })
+    const dispose = installForkEnforcement({
+      childSessionId: 'child-writer',
+      childContext: writerScope.ctx,
+      childScope: writer,
+      grantedRoot: granted,
+      cwd: root,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: SessionId(writer.id) }),
+      fs: ctx.fs,
+      tools: ctx.tools,
+      forks,
+      describe: describeTool,
+      write: true,
+    })
+    expect(dispose).toBeDefined()
+    const call = (name: string, args: unknown) => executeOneTool(ctx, {
+      signal: testToolSignal,
+      callId: ToolCallId(`write-${name}`),
+      name,
+      arguments: args,
+      agent: writer as never,
+    })
+
+    const inside = await call('write', { file_path: join(root, 'written.txt'), content: 'bounded\n' })
+    expect(inside.isError).toBe(false)
+    expect(readFileSync(join(root, 'written.txt'), 'utf8')).toBe('bounded\n')
+
+    // The same tool, named outside the grant: refused, and the outside tree gains nothing.
+    const outside = await call('write', { file_path: join(dirname(root), '..', 'outside-here.txt'), content: 'nope\n' })
+    expect(outside.isError).toBe(true)
+    expect(existsSync(join(dirname(root), '..', 'outside-here.txt'))).toBe(false)
+    dispose?.()
+  })
+
+  it('edits inside the granted workspace through the bounded edit and refuses everything outside it', async () => {
+    await ctx.plugin(FsObservationPolicy)
+    const writer = { id: 'child-editor', session: { header: { cwd: root } } }
+    let writerScope!: Scope
+    await ctx.plugin(Object.assign(
+      (inner: Context) => { writerScope = createScope(inner, writer) },
+      { inject: ['tools', 'fs', 'systemPrompt'] },
+    ))
+    await forks.record({
+      childSessionId: 'child-editor',
+      shareId: 'share-1',
+      sourceSessionId: 'session-1',
+      boundary: 3,
+      creator: viewer,
+      createdAt: '2026-09-12T00:00:00.000Z',
+    })
+    const dispose = installForkEnforcement({
+      childSessionId: 'child-editor',
+      childContext: writerScope.ctx,
+      childScope: writer,
+      grantedRoot: granted,
+      cwd: root,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: SessionId('child-editor') }),
+      fs: ctx.fs,
+      tools: ctx.tools,
+      forks,
+      describe: describeTool,
+      write: true,
+    })
+    expect(dispose).toBeDefined()
+    const path = join(root, 'inside.ts')
+    const run = (name: string, args: unknown) => executeOneTool(ctx, {
+      signal: testToolSignal,
+      callId: ToolCallId(`edit-${name}`),
+      name,
+      arguments: args,
+      agent: writer as never,
+    })
+
+    // The observation policy still asks for the read before the edit.
+    const unread = await run('edit', { file_path: path, old_string: 'export const inside = 1', new_string: 'export const inside = 2' })
+    expect(unread.isError).toBe(true)
+    expect((await run('read', { file_path: path })).isError).toBe(false)
+
+    const edited = await run('edit', {
+      file_path: path, old_string: 'export const inside = 1', new_string: 'export const inside = 2',
+    })
+    expect(edited.isError).toBe(false)
+    expect(readFileSync(path, 'utf8')).toBe('export const inside = 2\n')
+
+    // The same tool naming a file outside the grant is refused, and that file keeps its content.
+    const outsidePath = join(outside, 'secret.txt')
+    const escaped = await run('edit', {
+      file_path: outsidePath, old_string: 'owner-only', new_string: 'changed',
+    })
+    expect(escaped.isError).toBe(true)
+    expect(text(escaped)).toMatch(/workspace it was granted/u)
+    expect(readFileSync(outsidePath, 'utf8')).toBe('owner-only\n')
+    dispose?.()
+  })
+
+  it('shadows the read a preset scope registered when the child sits beneath it', async () => {
+    installLimit()
+    // A product profile registers its filesystem tools in a preset/ancestor scope, not globally: the
+    // child sits beneath that scope, and the host's confined read must shadow it there.
+    const shippedRead = ctx.tools.get('read')
+    if (shippedRead === undefined) throw new Error('the deployment registers no read tool')
+    let parent!: Scope
+    await ctx.plugin(Object.assign(
+      (inner: Context) => { parent = createScope(inner, { id: 'parent-scope' }) },
+      { inject: ['tools'] },
+    ))
+    parent.ctx.tools.register(shippedRead)
+    const layeredChild = { id: 'child-2', session: { header: { cwd: root } } }
+    let underParent!: Scope
+    await parent.ctx.plugin(Object.assign(
+      (inner: Context) => { underParent = createScope(inner, layeredChild) },
+      { inject: ['tools', 'fs', 'systemPrompt'] },
+    ))
+    await forks.record({
+      childSessionId: 'child-2',
+      shareId: 'share-1',
+      sourceSessionId: 'session-1',
+      boundary: 3,
+      creator: { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' },
+      createdAt: '2026-09-12T00:00:00.000Z',
+    })
+    const dispose = installForkEnforcement({
+      childSessionId: 'child-2',
+      childContext: underParent.ctx,
+      childScope: layeredChild,
+      grantedRoot: granted,
+      cwd: root,
+      resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: SessionId(layeredChild.id) }),
+      fs: ctx.fs,
+      tools: ctx.tools,
+      forks,
+      describe: describeTool,
+    })
+
+    expect(dispose).toBeDefined()
+    const layered = await executeOneTool(ctx, {
+      signal: testToolSignal,
+      callId: ToolCallId('call-layered'),
+      name: 'read',
+      arguments: { file_path: join(root, 'inside.ts') },
+      agent: layeredChild as never,
+    })
+    // The child's inherited definition is confined, and the name is held: a child-local read is refused.
+    expect(layered.isError).toBe(false)
+    expect(text(layered)).toContain('export const inside = 1')
+    expect(() => underParent.ctx.tools.register(shippedRead)).toThrow(/already registered/u)
+    dispose?.()
+  })
+
+  it('keeps the authorized root when the directory above the grant is replaced', async () => {
+    installLimit()
+    // The limit captured the root it was installed with. Replacing the directory above that root with
+    // a symlink to a tree of the same shape must not re-grant a new root: the read refuses, and the
+    // other tree's content never appears.
+    const tree = dirname(dirname(root))
+    const other = join(tree, 'outside-granted')
+    mkdirSync(join(other, 'leaf'), { recursive: true })
+    writeFileSync(join(other, 'leaf', 'inside.ts'), 'OUTSIDE-ROOT\n')
+    rmSync(join(tree, 'granted'), { recursive: true, force: true })
+    symlinkSync(other, join(tree, 'granted'))
+
+    const result = await call('read', { file_path: join(root, 'inside.ts') })
+
+    expect(text(result)).not.toContain('OUTSIDE-ROOT')
+    expect(result.isError).toBe(true)
+  })
+
+  it('keeps the authorized target when a link inside the grant is repointed before dispatch', async () => {
+    installLimit()
+    // A name that resolves inside the grant when the pre-execute check runs.
+    const link = join(root, 'link-inside.txt')
+    symlinkSync(join(root, 'inside.ts'), link)
+    const swap = ctx.on('tools/pre-execute', (_exec, next) => {
+      // Registered after the limit, so it runs after the grant check and before dispatch: the escape a
+      // path-only check cannot see.
+      rmSync(link, { force: true })
+      symlinkSync(join(outside, 'secret.txt'), link)
+      return next()
+    })
+    try {
+      const result = await call('read', { file_path: link })
+      // Either answer is safe; reading the owner's file is not. The confined read refuses because it
+      // resolves and checks the target inside the call, after the pre-execute verdict.
+      expect(text(result)).not.toContain('owner-only')
+      expect(result.isError).toBe(true)
+      expect(text(result)).toMatch(/workspace it was granted/u)
+    } finally {
+      swap()
+    }
+  })
+
+  it('opens the prompt and cancel gate only while this child’s guard is live', async () => {
+    // The host answers both `session/prompt` and `session/cancel` from this one decision.
+    expect(forks.allowsPrompt(childSessionId, viewer)).toMatchObject({ ok: false, code: 'fork-ceiling-uninstalled' })
+
+    const dispose = installLimit()
+    expect(forks.allowsPrompt(childSessionId, viewer)).toEqual({ ok: true })
+
+    dispose?.()
+    expect(forks.allowsPrompt(childSessionId, viewer)).toMatchObject({ ok: false, code: 'fork-ceiling-uninstalled' })
+    const afterRelease = await call('read', { file_path: join(root, 'inside.ts') })
+    expect(afterRelease.isError).toBe(true)
+    expect(text(afterRelease)).toMatch(/limits are not installed/u)
+  })
+
+  it('would read the repointed file if nothing confined what the tool opens', async () => {
+    // Control for the repointed-path test above: the same swap under the same guard, but with the
+    // deployment's read tool still holding the name and no check inside the tool itself. The escape is
+    // real, so the refusal above is the fork-scoped read's doing rather than the pipeline's.
+    const dispose = installChildEnforcement({
+      childSessionId,
+      ceiling: READ_ONLY_FORK_CEILING,
+      guard: forkToolGuard({
+        childOf: () => childSessionId,
+        enforcementInstalled: id => forks.enforcementInstalled(id),
+        toolIsTrusted: () => true,
+        authorizeReadPath: () => true,
+      }, () => forks.enforcedCeiling(childSessionId), describeTool),
+      verdictSource: () => Promise.resolve(),
+    }, {
+      contextOf: () => scope.ctx,
+      registerGuard: (context, guard) => context.tools.guard(guard),
+      registerVerdictSource: (context, source) => context.on(
+        'tools/pre-execute',
+        async (exec, next) => { await source(exec); return next() },
+      ),
+      recordEnforcement: (id, ceiling) => forks.installEnforcement(id, ceiling),
+      releaseEnforcement: (id) => { forks.releaseEnforcement(id) },
+    })
+    expect(dispose).toBeDefined()
+    const link = join(root, 'link-control.txt')
+    symlinkSync(join(root, 'inside.ts'), link)
+    const swap = ctx.on('tools/pre-execute', (_exec, next) => {
+      rmSync(link, { force: true })
+      symlinkSync(join(outside, 'secret.txt'), link)
+      return next()
+    })
+    try {
+      const result = await call('read', { file_path: link })
+      expect(text(result)).toContain('owner-only')
+    } finally {
+      swap()
+      dispose?.()
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/readonly-fork-tool-guard.spec.ts b/packages/experimental/liveshare/tests/readonly-fork-tool-guard.spec.ts
new file mode 100644
index 0000000000..e3af0ee83a
--- /dev/null
+++ b/packages/experimental/liveshare/tests/readonly-fork-tool-guard.spec.ts
@@ -0,0 +1,323 @@
+/**
+ * The guard a child's tool runtime registers: reason string out, and default-deny on anything the
+ * guard cannot establish — including an empty or unparsed path set.
+ *
+ * This is a helper-level spec: the guard is not yet registered on a child context, and path
+ * authorization here is a stub, so it proves the guard's own decisions and nothing about a live child.
+ */
+
+import { describe, expect, it } from 'vitest'
+import {
+  forkToolGuard,
+  installChildEnforcement,
+  type ForkToolExecution,
+} from '../src/host/fork-tool-guard.ts'
+import { READ_ONLY_FORK_CEILING, WRITE_FORK_CEILING } from '../src/host/fork-policy.ts'
+
+const child = 'child-1'
+
+/** A host whose authorization knows one workspace root and answers like a resolved path would. */
+function ports(options: { readonly installed?: boolean; readonly shadowed?: readonly string[] } = {}) {
+  const refused: string[] = []
+  return {
+    refused,
+    ports: {
+      childOf: (execution: ForkToolExecution) =>
+        (execution.agent as { readonly child?: string } | undefined)?.child,
+      enforcementInstalled: () => options.installed !== false,
+      // Names the child's own scope registered shadow the deployment's definition, so the guard is told
+      // which names resolved to the deployment's own tool and which did not.
+      toolIsTrusted: (_childSessionId: string, tool: string) => !(options.shadowed ?? []).includes(tool),
+      authorizeReadPath: (_childSessionId: string, path: string) => {
+        refused.push(path)
+        // Stands in for the host's own resolution: only paths under the granted root are inside it.
+        return path === '/granted/a.ts' || path === '/granted/dir/b.ts'
+      },
+    },
+  }
+}
+
+const execution = (name: string, args: unknown = {}): ForkToolExecution => ({
+  name,
+  arguments: args,
+  agent: { child },
+})
+
+/** The tool-description half of the host's side, kept beside the specs that read it. */
+const describeTool = (exec: ForkToolExecution) => {
+  if (exec.name === 'todo_write') return { paths: [] as const, noFileEffect: true }
+  const path = typeof exec.arguments === 'object' && exec.arguments !== null && 'path' in exec.arguments
+    ? (exec.arguments as { readonly path: string }).path
+    : undefined
+  // Missing arguments establish neither a named target nor the absence of a filesystem effect.
+  if (path === undefined) {
+    return exec.name === 'read'
+      ? { paths: undefined, noFileEffect: false }
+      : { paths: [] as const, noFileEffect: false }
+  }
+  return { paths: [path], noFileEffect: false }
+}
+
+describe('fork tool guard', () => {
+  it('allows a read whose paths are inside the granted workspace', () => {
+    const { ports: host } = ports()
+    const guard = forkToolGuard(host, () => READ_ONLY_FORK_CEILING, describeTool)
+
+    expect(guard(execution('read', { path: '/granted/a.ts' }))).toBeUndefined()
+    expect(guard(execution('read', { path: '/granted/dir/b.ts' }))).toBeUndefined()
+    // Search tools are admitted once their declared path is inside the grant.
+    expect(guard(execution('grep', { path: '/granted/a.ts' }))).toBeUndefined()
+    expect(guard(execution('glob', { path: '/granted/a.ts' }))).toBeUndefined()
+    // A tool declaring no filesystem effect needs no path at all.
+    expect(guard(execution('todo_write'))).toBeUndefined()
+  })
+
+  it('installs nothing when this host cannot reach the child’s own context', () => {
+    let registered = 0
+    const host = {
+      contextOf: () => undefined,
+      registerGuard: () => { registered += 1; return () => {} },
+      registerVerdictSource: () => () => {},
+      recordEnforcement: () => true,
+      releaseEnforcement: () => {},
+    }
+
+    const dispose = installChildEnforcement(
+      {
+        childSessionId: 'child-1',
+        ceiling: READ_ONLY_FORK_CEILING,
+        guard: () => undefined,
+        verdictSource: async () => {},
+      },
+      host,
+    )
+
+    // No context means no guard to attach and no enforcement record to claim.
+    expect(dispose).toBeUndefined()
+    expect(registered).toBe(0)
+  })
+
+  it('records a child as enforced, and keeps a refusing guard in place after release', () => {
+    const events: string[] = []
+    let registered = 0
+    const host = {
+      contextOf: (id: string) => (id === 'child-1' ? { id } : undefined),
+      registerGuard: () => { registered += 1; return () => { events.push('guard-disposed') } },
+      registerVerdictSource: () => () => { events.push('verdicts-disposed') },
+      recordEnforcement: (id: string) => { events.push(`recorded:${id}`); return true },
+      releaseEnforcement: (id: string) => { events.push(`released:${id}`) },
+    }
+
+    const dispose = installChildEnforcement(
+      {
+        childSessionId: 'child-1',
+        ceiling: READ_ONLY_FORK_CEILING,
+        guard: () => undefined,
+        verdictSource: async () => {},
+      },
+      host,
+    )
+    expect(registered).toBe(1)
+    expect(events).toEqual(['recorded:child-1'])
+    dispose?.()
+    // Releasing drops the record and the verdict producer. The guard is NOT disposed: an unregistered
+    // guard stops refusing, so a released child would run unguarded instead.
+    expect(events).toEqual(['recorded:child-1', 'verdicts-disposed', 'released:child-1'])
+  })
+
+  it('replaces the same context’s released guard and keeps calls denied during teardown', async () => {
+    const context = {}
+    const guards: ((exec: ForkToolExecution) => string | undefined)[] = []
+    let source: ((exec: ForkToolExecution) => Promise<void>) | undefined
+    let installed = false
+    const duringTeardown: (string | undefined)[] = []
+    const call = execution('read', { path: '/granted/a.ts' })
+    const host = {
+      contextOf: () => context,
+      registerGuard: (_context: object, guard: (exec: ForkToolExecution) => string | undefined) => {
+        guards.push(guard)
+        return () => { guards.splice(guards.indexOf(guard), 1) }
+      },
+      registerVerdictSource: (_context: object, next: (exec: ForkToolExecution) => Promise<void>) => {
+        source = next
+        return () => {
+          duringTeardown.push(guards[0]?.(call))
+          if (source === next) source = undefined
+        }
+      },
+      recordEnforcement: () => { installed = true; return true },
+      releaseEnforcement: () => { installed = false },
+    }
+    const install = () => {
+      const verdicts = new Set<ForkToolExecution>()
+      const dispose = installChildEnforcement({
+        childSessionId: child,
+        ceiling: READ_ONLY_FORK_CEILING,
+        guard: exec => installed && verdicts.has(exec) ? undefined : 'missing verdict',
+        verdictSource: async (exec) => { verdicts.add(exec) },
+      }, host)
+      return () => { verdicts.clear(); dispose?.() }
+    }
+    const first = install()
+    await source?.(call)
+    expect(guards[0]?.(call)).toBeUndefined()
+    first()
+    expect(guards[0]?.(call)).toBeTypeOf('string')
+    const second = install()
+    try {
+      await source?.(call)
+      expect(guards[0]?.(call)).toBeUndefined()
+      expect(guards).toHaveLength(1)
+      first()
+      expect(installed).toBe(true)
+    } finally {
+      second()
+    }
+    expect(installed).toBe(false)
+    expect(guards[0]?.(call)).toBeTypeOf('string')
+    expect(duringTeardown.every(reason => typeof reason === 'string')).toBe(true)
+  })
+
+  it('keeps a persistent refusal when reinstallation fails and does not share an inherited owner', () => {
+    const parent = {}
+    const nested = Object.create(parent) as object
+    const guards = new Map<object, ((exec: ForkToolExecution) => string | undefined)[]>()
+    let available = true
+    const registrationChecks: (string | undefined)[] = []
+    const call = execution('read')
+    const install = (context: object, reason: string) => installChildEnforcement({
+      childSessionId: child,
+      ceiling: READ_ONLY_FORK_CEILING,
+      guard: () => reason,
+      verdictSource: async () => {},
+    }, {
+      contextOf: () => context,
+      registerGuard: (owner, guard) => {
+        guards.set(owner, [...guards.get(owner) ?? [], guard])
+        return () => {}
+      },
+      registerVerdictSource: (owner) => {
+        registrationChecks.push(guards.get(owner)?.[0]?.(call))
+        return available ? () => {} : undefined
+      },
+      recordEnforcement: () => true,
+      releaseEnforcement: () => {},
+    })
+    const first = install(parent, 'parent')
+    const childDispose = install(nested, 'nested')
+    const second = install(parent, 'replacement')
+    expect(guards.get(parent)).toHaveLength(1)
+    expect(guards.get(nested)).toHaveLength(1)
+    expect(guards.get(parent)?.[0]?.(call)).toBe('replacement')
+    expect(guards.get(nested)?.[0]?.(call)).toBe('nested')
+    first?.()
+    expect(guards.get(parent)?.[0]?.(call)).toBe('replacement')
+    available = false
+    expect(install(parent, 'failed')).toBeUndefined()
+    expect(guards.get(parent)?.[0]?.(call)).toMatch(/limits are not installed/u)
+    expect(registrationChecks.slice(2).every(reason => typeof reason === 'string')).toBe(true)
+    second?.()
+    childDispose?.()
+  })
+
+  it('rolls back instead of half-installing when the runtime or the record refuses', () => {
+    const events: string[] = []
+    const noRuntime = {
+      contextOf: () => ({ id: 'child-1' }),
+      registerGuard: () => undefined,
+      registerVerdictSource: () => () => { events.push('verdicts-disposed') },
+      recordEnforcement: () => { events.push('recorded'); return true },
+      releaseEnforcement: () => { events.push('released') },
+    }
+    // Nothing registered the guard, so nothing is recorded: a guard that does not exist is not a limit.
+    expect(installChildEnforcement(
+      {
+        childSessionId: 'child-1',
+        ceiling: READ_ONLY_FORK_CEILING,
+        guard: () => undefined,
+        verdictSource: async () => {},
+      },
+      noRuntime,
+    )).toBeUndefined()
+    // The verdict source is rolled back with the guard: a producer with no guard enforces nothing.
+    expect(events).toEqual(['verdicts-disposed'])
+
+    const unknownChild = {
+      contextOf: () => ({ id: 'child-1' }),
+      registerGuard: () => () => { events.push('guard-disposed') },
+      registerVerdictSource: () => () => { events.push('verdicts-disposed') },
+      recordEnforcement: () => false,
+      releaseEnforcement: () => { events.push('released') },
+    }
+    // A child this host never recorded cannot be marked enforced. The guard stays registered so the
+    // child refuses, and no record is written for it.
+    expect(installChildEnforcement(
+      {
+        childSessionId: 'child-1',
+        ceiling: READ_ONLY_FORK_CEILING,
+        guard: () => undefined,
+        verdictSource: async () => {},
+      },
+      unknownChild,
+    )).toBeUndefined()
+    // Neither half of the install survives, and the guard's own disposer was never called.
+    expect(events).toEqual(['verdicts-disposed', 'verdicts-disposed'])
+  })
+
+  it('refuses a read outside the granted workspace and every acting capability', () => {
+    const { ports: host, refused } = ports()
+    const guard = forkToolGuard(host, () => READ_ONLY_FORK_CEILING, describeTool)
+
+    // The path check runs through the host's resolution, not a prefix comparison in the guard.
+    expect(guard(execution('read', { path: '/etc/passwd' }))).toMatch(/may only read inside the workspace/u)
+    expect(refused).toContain('/etc/passwd')
+    // Acting capabilities are refused before any path is even considered.
+    for (const tool of ['bash', 'pwsh', 'cua', 'plugin_manager', 'schedule_create', 'write', 'edit', 'subagent']) {
+      expect(guard(execution(tool, { path: '/granted/a.ts' }))).toMatch(/may not use/u)
+    }
+    // The write ceiling admits the two mutation tools; every other acting capability stays refused.
+    const writeGuard = forkToolGuard(host, () => WRITE_FORK_CEILING, describeTool)
+    expect(writeGuard(execution('write', { path: '/granted/a.ts' }))).toBeUndefined()
+    expect(writeGuard(execution('edit', { path: '/granted/a.ts' }))).toBeUndefined()
+    expect(writeGuard(execution('bash', { path: '/granted/a.ts' }))).toMatch(/may not use/u)
+  })
+
+  it('refuses a permitted name whose definition is one the child registered for itself', () => {
+    const granted = ports()
+    const shadowed = ports({ shadowed: ['read'] })
+
+    expect(forkToolGuard(granted.ports, () => READ_ONLY_FORK_CEILING, describeTool)(
+      execution('read', { path: '/granted/a.ts' }),
+    )).toBeUndefined()
+    // The same name and the same in-workspace path, but the definition about to run is the child's own:
+    // a name-only ceiling would run it here.
+    expect(forkToolGuard(shadowed.ports, () => READ_ONLY_FORK_CEILING, describeTool)(
+      execution('read', { path: '/granted/a.ts' }),
+    )).toMatch(/which this host did not install/u)
+  })
+
+  it('refuses while the child’s own limit is not installed, and unattributed calls always', () => {
+    const { ports: host } = ports({ installed: false })
+    const guard = forkToolGuard(host, () => READ_ONLY_FORK_CEILING, () => ({ paths: [], noFileEffect: true }))
+
+    expect(guard(execution('read'))).toMatch(/limits are not installed/u)
+    // A call this guard cannot attribute to a child is not one it can vouch for.
+    expect(guard({ name: 'read', arguments: {} })).toMatch(/without a child session/u)
+  })
+
+  it('refuses an unparsed or empty path set instead of reading it as "no paths"', () => {
+    const { ports: host } = ports()
+    const guard = forkToolGuard(host, () => READ_ONLY_FORK_CEILING, describeTool)
+
+    // Neither unparsed arguments nor an empty path set establish that a read has no filesystem effect.
+    expect(guard(execution('read'))).toMatch(/paths could not be established/u)
+    const emptyPaths = forkToolGuard(host, () => READ_ONLY_FORK_CEILING,
+      () => ({ paths: [], noFileEffect: false }))
+    expect(emptyPaths(execution('read'))).toMatch(/filesystem effect could not be established/u)
+    // grep is on the surface, but a pathless call this fixture cannot place establishes no effect either.
+    expect(guard(execution('grep'))).toMatch(/filesystem effect could not be established/u)
+    // The no-filesystem escape hatch only ever applies to a tool the ceiling permits; the read-only
+    // ceiling permits only read tools, so a tool outside it is refused before paths are considered.
+    expect(guard(execution('clock'))).toMatch(/may not use/u)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/relay-access-state.host.spec.ts b/packages/experimental/liveshare/tests/relay-access-state.host.spec.ts
new file mode 100644
index 0000000000..2ae172eff7
--- /dev/null
+++ b/packages/experimental/liveshare/tests/relay-access-state.host.spec.ts
@@ -0,0 +1,145 @@
+/** Relay grants apply without owner UI polling; stale snapshots cannot revive denied readers. */
+import { Context } from '@deepseek-ai/cordis'
+import { Peer } from '@deepseek-ai/dsh-client-connection'
+import { randomUUID } from 'node:crypto'
+import { mkdtempSync, writeFileSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import type { ShareAccessStateFrame, TunnelRegistrationToken, TunnelWorkerEvent, TunnelRequestToken } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { TunnelWorkerInput } from '../src/host/tunnel-worker.ts'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { apply } from '../src/host/share-host.ts'
+
+const worker = vi.hoisted(() => ({ event: undefined as ((event: TunnelWorkerEvent) => void) | undefined,
+  sent: [] as TunnelWorkerInput[] }))
+vi.mock('../src/host/tunnel-worker.ts', () => ({ TunnelWorker: class {
+  start() {}
+  onEvent(callback: (event: TunnelWorkerEvent) => void) { worker.event = callback; return () => {} }
+  send(command: TunnelWorkerInput) { worker.sent.push(command) }
+  stop() { worker.event = undefined; return Promise.resolve() }
+} }))
+const alice = { providerId: 'provider', tenantId: 'tenant', subjectId: 'alice' }
+const bob = { ...alice, subjectId: 'bob' }
+
+async function host() {
+  worker.sent.length = 0
+  const registrationToken = randomUUID() as TunnelRegistrationToken
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-authority-'))
+  const stateFile = join(directory, 'owner.json')
+  writeFileSync(stateFile, JSON.stringify({ instanceId: 'owner', relayUrl: 'https://relay.test',
+    shares: [{ relay: 'https://relay.test', shareId: 'share', sessionId: 'source',
+      sessionTitle: 'Source', accessMode: 'selected', gatewayToken: 'token', allowedSubjectIds: [],
+      createdAt: '2026-10-08T00:00:00Z', sessionMode: 'view' }] }))
+  const ctx = new Context()
+  const dispatched: string[] = []
+  const entered = new Map<string, ReturnType<typeof Promise.withResolvers<undefined>>>()
+  const released = new Map<string, ReturnType<typeof Promise.withResolvers<undefined>>>()
+  let block = false
+  const connection = {
+    fetch: { register: () => () => {} },
+    createPeer: (options: ConstructorParameters<typeof Peer>[1]) => new Peer(ctx, options),
+    createSharedFetchHandler: () => ({
+      fetch: async (request: Request) => {
+        const body = await request.json() as { rpcId: string }
+        entered.get(body.rpcId)?.resolve(undefined)
+        if (block) await released.get(body.rpcId)?.promise
+        request.signal.throwIfAborted()
+        dispatched.push(body.rpcId)
+        return Response.json({ rpcId: body.rpcId, result: { ok: true, value: {} } })
+      },
+    }),
+  }
+  ctx.provide('connection', connection as never)
+  let authority: ShareAccessStateFrame = { type: 'share-access-state', version: 1, accessMode: 'selected',
+    allowedSubjectIds: [identityKeyOf(alice), identityKeyOf(bob)], sessionMode: 'view' }
+  const snapshotEntered = Promise.withResolvers<undefined>()
+  const snapshotRelease = Promise.withResolvers<undefined>()
+  let holdSnapshot = false
+  vi.stubGlobal('fetch', async (input: RequestInfo | URL, init?: RequestInit) => {
+    const request = new Request(input, init)
+    const url = new URL(request.url)
+    expect(url.origin).toBe('https://relay.test')
+    if (url.pathname.endsWith('/owner-credential')) return Response.json({ supported: true })
+    expect(url.pathname).toBe('/__liveshare/requests')
+    expect(request.headers.get('authorization')).toBe('Bearer token')
+    const captured = authority
+    snapshotEntered.resolve(undefined)
+    if (holdSnapshot) await snapshotRelease.promise
+    return Response.json({ ...captured, requests: [] })
+  })
+  const stop = await apply(ctx, { ownerStateFile: stateFile })
+  onTestFinished(async () => {
+    snapshotRelease.resolve(undefined)
+    for (const release of released.values()) release.resolve(undefined)
+    await stop()
+    await ctx.fiber.dispose()
+    vi.unstubAllGlobals()
+    rmSync(directory, { recursive: true, force: true })
+  })
+  const call = async (rpcId: string, actor = alice) => {
+    const token = rpcId as TunnelRequestToken
+    const answered = Promise.withResolvers<TunnelWorkerInput>()
+    const wait = vi.waitFor(() => {
+      const response = worker.sent.find(frame => frame.type === 'share-rpc-response' && frame.token === token)
+      if (response === undefined) throw new Error('pending response')
+      answered.resolve(response)
+    })
+    worker.event?.({ type: 'share-rpc-request', registrationToken, token, id: worker.sent.length + 1, shareId: 'share', actor,
+      body: { op: 'call', path: '/api/commands/list', body: { type: 'client-request', rpcId,
+        method: 'commands/list', payload: { args: {} } } } })
+    await wait
+    return answered.promise
+  }
+  const start = (rpcId: string, actor = alice) => {
+    entered.set(rpcId, Promise.withResolvers<undefined>())
+    released.set(rpcId, Promise.withResolvers<undefined>())
+    worker.event?.({ type: 'share-rpc-request', registrationToken, token: rpcId as TunnelRequestToken,
+      id: worker.sent.length + 1, shareId: 'share', actor,
+      body: { op: 'call', path: '/api/commands/list', body: { type: 'client-request', rpcId,
+        method: 'commands/list', payload: { args: {} } } } })
+    const enteredPromise = entered.get(rpcId)
+    if (enteredPromise === undefined) throw new Error('request was not registered')
+    return enteredPromise.promise
+  }
+  return { call, start, stop, dispatched, entered, released, snapshotEntered, snapshotRelease, registrationToken,
+    block: () => { block = true }, holdSnapshot: () => { holdSnapshot = true },
+    setAuthority: (next: ShareAccessStateFrame) => { authority = next },
+    get authority() { return authority } }
+}
+
+describe('Relay access state at the Host', () => {
+  it('admits an independently approved viewer without reading the owner UI', async () => {
+    const fixture = await host()
+    expect(await fixture.call('approved')).toMatchObject({ type: 'share-rpc-response', status: 200 })
+    expect(fixture.dispatched).toEqual(['approved'])
+  })
+  it('ends revoked in-flight calls, preserves another actor, and ignores an older grant frame', async () => {
+    const fixture = await host()
+    await fixture.call('baseline')
+    fixture.block()
+    await fixture.start('alice-waiting')
+    await fixture.start('bob-waiting', bob)
+    const revoked = { ...fixture.authority, version: 2, allowedSubjectIds: [identityKeyOf(bob)] }
+    fixture.setAuthority(revoked)
+    worker.event?.({ ...revoked, registrationToken: fixture.registrationToken, shareId: 'share' })
+    worker.event?.({ ...fixture.authority, registrationToken: fixture.registrationToken,
+      version: 1, allowedSubjectIds: [identityKeyOf(alice)], shareId: 'share' })
+    fixture.released.get('alice-waiting')?.resolve(undefined)
+    fixture.released.get('bob-waiting')?.resolve(undefined)
+    await vi.waitFor(() => { expect(fixture.dispatched).toContain('bob-waiting') })
+    expect(fixture.dispatched).not.toContain('alice-waiting')
+    expect(await fixture.call('revoked')).toMatchObject({ status: 403 })
+  })
+  it('refuses a delayed snapshot from a lost socket generation', async () => {
+    const fixture = await host()
+    fixture.holdSnapshot()
+    void fixture.start('old-generation')
+    await fixture.snapshotEntered.promise
+    worker.event?.({ type: 'share-closed', registrationToken: fixture.registrationToken, shareId: 'share' })
+    fixture.snapshotRelease.resolve(undefined)
+    await fixture.stop()
+    expect(worker.sent.some(frame => frame.type === 'share-rpc-response' && frame.token === 'old-generation')).toBe(false)
+    expect(fixture.dispatched).toEqual([])
+  })
+})
diff --git a/packages/experimental/liveshare/tests/relay-authority-management.host.spec.ts b/packages/experimental/liveshare/tests/relay-authority-management.host.spec.ts
new file mode 100644
index 0000000000..c71bd6e2b4
--- /dev/null
+++ b/packages/experimental/liveshare/tests/relay-authority-management.host.spec.ts
@@ -0,0 +1,183 @@
+/** Owner choices and management reads constrain live external execution. */
+import { Context } from '@deepseek-ai/cordis'
+import { Peer } from '@deepseek-ai/dsh-client-connection'
+import type { Agent } from '@deepseek-ai/dsh-agent'
+import { FsTargetKey } from '@deepseek-ai/dsh-fs'
+import { ToolCallId } from '@deepseek-ai/dsh-llm'
+import { createScope, type Scope } from '@deepseek-ai/dsh-scope'
+import { Session, SessionId, SESSION_FORMAT_VERSION } from '@deepseek-ai/dsh-session'
+import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
+import ToolRuntime, { defineTool } from '@deepseek-ai/dsh-tools'
+import type { ShareAccessStateFrame, TunnelRegistrationToken, TunnelRequestToken, TunnelWorkerEvent } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { randomUUID } from 'node:crypto'
+import { mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { expect, it, onTestFinished, vi } from 'vitest'
+import type {} from '../src/index.ts'
+import { apply } from '../src/host/share-host.ts'
+import { executeOneTool } from './tool-call.ts'
+import type { TunnelWorkerInput } from '../src/host/tunnel-worker.ts'
+import type { ForkEnforcementFs } from '../src/host/fork-enforcement.ts'
+import * as NativeToolExecutor from '@deepseek-ai/dsh-tool-executor-native'
+
+const worker = vi.hoisted(() => ({ listener: undefined as ((event: TunnelWorkerEvent) => void) | undefined,
+  sent: [] as TunnelWorkerInput[] }))
+vi.mock('../src/host/tunnel-worker.ts', () => ({ TunnelWorker: class {
+  start() {}
+  onEvent(listener: (event: TunnelWorkerEvent) => void) { worker.listener = listener; return () => {} }
+  send(command: TunnelWorkerInput) { worker.sent.push(command) }
+  stop() { worker.listener = undefined; return Promise.resolve() }
+} }))
+const alice = { providerId: 'mock', tenantId: 'tenant', subjectId: 'alice' }
+const bob = { ...alice, subjectId: 'bob' }
+
+async function fixture(mode: 'view' | 'write') {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-management-authority-'))
+  const ctx = new Context()
+  const opened = Promise.withResolvers<undefined>()
+  const release = Promise.withResolvers<undefined>()
+  const pending: Promise<unknown>[] = []
+  const lifecycle: { stop?: () => Promise<void> } = {}
+  onTestFinished(async () => {
+    release.resolve(undefined)
+    await Promise.allSettled(pending)
+    await lifecycle.stop?.()
+    await ctx.fiber.dispose()
+    vi.unstubAllGlobals()
+    rmSync(directory, { recursive: true, force: true })
+  })
+  worker.sent.length = 0
+  const stateFile = join(directory, 'owner.json')
+  writeFileSync(stateFile, JSON.stringify({ instanceId: 'owner', relayUrl: 'https://relay.test',
+    shares: [{ relay: 'https://relay.test', shareId: 'share', sessionId: 'source',
+      sessionTitle: 'Source', accessMode: 'selected', allowedSubjectIds: [identityKeyOf(alice), identityKeyOf(bob)],
+      gatewayToken: 'token', createdAt: '2026-10-08T00:00:00Z', sessionMode: mode, allowsFork: mode !== 'view' }] }))
+  await ctx.plugin(SystemPrompt)
+  await ctx.plugin(ToolRuntime)
+  await ctx.plugin(NativeToolExecutor)
+  const session = Session.create(SessionId('source'), [], { version: SESSION_FORMAT_VERSION,
+    id: SessionId('source'), cwd: directory, createdAt: 0, isSeeded: false })
+  const unsupported = (): never => { throw new Error('this fixture does not drive the Inbox') }
+  const key: Omit<Agent, 'ctx'> = { id: session.id, session, status: 'running', options: {},
+    model: { current: () => undefined, select: () => {} },
+    inbox: { nextTurn: [], nextStep: [], clear: unsupported, append: unsupported, prepend: unsupported,
+      replace: unsupported, remove: unsupported, splice: unsupported },
+    send: unsupported, followup: unsupported, steer: unsupported, inject: unsupported,
+    cancel: vi.fn(), whenIdle: () => Promise.resolve(), runMaintenance: task => task(new AbortController().signal) }
+  let scope: Scope | undefined
+  await ctx.plugin(Object.assign((inner: Context) => { scope = createScope(inner, key) }, { inject: ['tools', 'systemPrompt'] }))
+  if (scope === undefined) throw new Error('source scope missing')
+  const agent: Agent = Object.assign(key, { ctx: scope.ctx })
+  const delegated = vi.fn(async () => 'file contents')
+  for (const name of ['read', 'write']) ctx.effect(() => ctx.tools.register(defineTool({ name, description: 'Use a file',
+    parameters: { file_path: { type: 'string', required: true } },
+    output: { schema: { type: 'string' }, render: (_args, value) => [{ type: 'text', text: value }] }, execute: delegated })))
+  const root = { targetKey: FsTargetKey('root'), displayPath: directory }
+  let holdOpen = false
+  // A held read blocks while resolving its target, after admission and before the deployment's read runs.
+  const fs: ForkEnforcementFs = {
+    resolve: async () => {
+      if (holdOpen) { opened.resolve(undefined); await release.promise }
+      return root
+    },
+    contains: () => true, processPath: () => directory,
+    writeText: async () => { throw new Error('writes not exercised here') },
+    editText: async () => { throw new Error('edits not exercised here') } }
+  ctx.provide('fs', fs as never)
+  // The host derives each execution's turn from this maintained boundary, exactly as the Agents service serves it.
+  ctx.provide('agents', { get: () => agent } as never)
+  ctx.provide('sandboxPolicy', { resolve: () => ({ mode: 'workspace-write', workspaceRoot: directory }) } as never)
+  const routes = new Map<string, (request: Request) => Promise<Response>>()
+  const dispatched = vi.fn(async () => Response.json({ result: { ok: true, value: { accepted: true } } }))
+  ctx.provide('connection', { fetch: { register: (route: { path: string; fetch: (request: Request) => Promise<Response> }) => {
+    routes.set(route.path, route.fetch); return () => { routes.delete(route.path) }
+  } }, createPeer: (options: ConstructorParameters<typeof Peer>[1]) => new Peer(ctx, options),
+  createSharedFetchHandler: () => ({ fetch: dispatched }) } as never)
+  let authority: ShareAccessStateFrame = { type: 'share-access-state', version: 1, accessMode: 'selected',
+    allowedSubjectIds: [identityKeyOf(alice), identityKeyOf(bob)], sessionMode: 'write' }
+  let reachable = true
+  // A Relay built before the upload switch retired may still state it; the host must ignore the field.
+  let legacyUploadSwitch: boolean | undefined
+  vi.stubGlobal('fetch', async (input: RequestInfo | URL, init?: RequestInit) => {
+    const request = new Request(input, init)
+    expect(new URL(request.url).origin).toBe('https://relay.test')
+    if (request.url.endsWith('/owner-credential')) return Response.json({ supported: true })
+    expect(new URL(request.url).pathname).toBe('/__liveshare/requests')
+    expect(request.headers.get('authorization')).toBe('Bearer token')
+    if (!reachable) return new Response('', { status: 410 })
+    return Response.json({ ...authority, ...(legacyUploadSwitch === undefined ? {} : { allowsFileUpload: legacyUploadSwitch }),
+      requests: [] })
+  })
+  lifecycle.stop = await apply(ctx, { ownerStateFile: stateFile })
+  const registrationToken = randomUUID() as TunnelRegistrationToken
+  const manage = async () => await ctx.liveshareShares.list()
+  const snapshot = (state: ShareAccessStateFrame) => {
+    authority = state
+    worker.listener?.({ ...state, registrationToken, shareId: 'share' })
+  }
+  const prompt = async (readOnly = false) => {
+    const token = randomUUID() as TunnelRequestToken
+    worker.listener?.({ type: 'share-rpc-request', registrationToken, token, shareId: 'share', id: 1, actor: alice,
+      body: { op: 'call', path: readOnly ? '/api/commands/list' : '/api/session/prompt',
+        body: { type: 'client-request', rpcId: token,
+          method: readOnly ? 'commands/list' : 'session/prompt',
+          payload: readOnly ? { args: {} } : { args: { request: { sessionId: 'source', requestId: token,
+            mode: 'queue', content: [{ type: 'text', text: 'viewer' }] } } } } } })
+    await vi.waitFor(() => { expect(worker.sent.some(command => command.type === 'share-rpc-response' && command.token === token)).toBe(true) })
+    return worker.sent.find(command => command.type === 'share-rpc-response' && command.token === token)
+  }
+  return { ctx, agent, stateFile, delegated, dispatched, opened: opened.promise, manage, snapshot, prompt,
+    get authority() { return authority }, setAuthority: (state: ShareAccessStateFrame) => { authority = state },
+    unavailable: () => { reachable = false },
+    stateLegacyUploadSwitch: (value: boolean) => { legacyUploadSwitch = value },
+    releaseOpen: () => { release.resolve(undefined) },
+    startRead: (turn = 1) => { session.append('turn/start', { turn }); holdOpen = true; const reading = executeOneTool(ctx, { name: 'read',
+      arguments: { file_path: join(directory, 'file') }, callId: ToolCallId(`external-read-${turn}`),
+      agent, signal: new AbortController().signal }); pending.push(reading); return reading } }
+}
+
+it('keeps the Owner view choice below a writable Relay snapshot', async () => {
+  const f = await fixture('view')
+  f.snapshot(f.authority)
+  await f.ctx.serial('agent/created', { agent: f.agent, source: 'startup' })
+  expect(await f.manage()).toMatchObject({
+    shares: [{ sessionMode: 'view', allowsFork: false }],
+  })
+  const persisted = JSON.parse(readFileSync(f.stateFile, 'utf8')) as { shares: Array<{ sessionMode: string }> }
+  expect(persisted.shares[0]?.sessionMode).toBe('view')
+  // Both tiers drive the shared Session, so the owner's own choice is what the reader receives.
+  expect(await f.prompt()).toMatchObject({ status: 200 })
+  expect(f.dispatched).toHaveBeenCalled()
+})
+
+it('returns a terminal denial when the Host first reads revocation from GET', async () => {
+  const f = await fixture('view')
+  expect(await f.prompt(true)).toMatchObject({ status: 200 })
+  f.setAuthority({ ...f.authority, version: 2, allowedSubjectIds: [identityKeyOf(bob)] })
+  expect(await f.prompt(true)).toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+  expect(f.dispatched).toHaveBeenCalledOnce()
+})
+
+it('does not persist a temporary Relay mode downgrade as the Owner choice', async () => {
+  const f = await fixture('write')
+  f.snapshot({ ...f.authority, version: 2, sessionMode: 'view' })
+  await f.manage()
+  const persisted = JSON.parse(readFileSync(f.stateFile, 'utf8')) as { shares: Array<{ sessionMode: string }> }
+  expect(persisted.shares[0]?.sessionMode).toBe('write')
+})
+
+// An older Relay may still state the retired upload switch. The frame is accepted and the field is
+// ignored: nothing reads it back, and the share row no longer has an upload decision to report.
+it('ignores an upload switch an older Relay still states', async () => {
+  const f = await fixture('write')
+  f.stateLegacyUploadSwitch(true)
+  const body = await f.manage()
+  expect(body.shares[0]).toMatchObject({ sessionMode: 'write', allowsFork: true })
+  expect(body.shares[0]).not.toHaveProperty('allowsFileUpload')
+  const persisted = JSON.parse(readFileSync(f.stateFile, 'utf8')) as {
+    readonly shares: ReadonlyArray<Record<string, unknown>>
+  }
+  expect(persisted.shares[0]).not.toHaveProperty('allowsFileUpload')
+})
diff --git a/packages/experimental/liveshare/tests/relay-authority-unit.spec.ts b/packages/experimental/liveshare/tests/relay-authority-unit.spec.ts
new file mode 100644
index 0000000000..c4ec4f9cd1
--- /dev/null
+++ b/packages/experimental/liveshare/tests/relay-authority-unit.spec.ts
@@ -0,0 +1,397 @@
+/** The Relay's access statements: adoption, fencing, and what a narrowed snapshot ends. */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import type { ShareAccessStateFrame } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { createRelayAuthority, identityForGrantedSubject, requesterStillAdmitted } from '../src/host/relay-authority.ts'
+import type { OwnerShare } from '../src/host/owner-types.ts'
+
+const RELAY = 'https://relay.example.test/liveshare'
+const VIEWER = { providerId: 'p', tenantId: 't', subjectId: 'alice' }
+const OWNER = { providerId: 'owner-p', tenantId: 'owner-t', subjectId: 'owner', displayName: 'Owner' }
+
+function storedShare(overrides: Partial<OwnerShare> = {}): OwnerShare {
+  return {
+    shareId: 'share-1', sessionId: 'session-1', sessionTitle: 'Session', accessMode: 'open',
+    link: `${RELAY}/?shareId=share-1`, relay: RELAY, gatewayToken: 'gateway-token',
+    allowedSubjectIds: [], revision: 1, createdAt: '2026-01-01T00:00:00.000Z',
+    allowsFork: false, sessionMode: 'view', online: true, ...overrides,
+  }
+}
+
+function frame(overrides: Partial<ShareAccessStateFrame> = {}): ShareAccessStateFrame {
+  return {
+    type: 'share-access-state', version: 1, accessMode: 'open', allowedSubjectIds: [],
+    sessionMode: 'view', ...overrides,
+  }
+}
+
+afterEach(() => {
+  vi.unstubAllGlobals()
+  vi.restoreAllMocks()
+})
+
+function harness(options: { readonly ownerIdentity?: typeof OWNER | undefined } = {}) {
+  const ownerIdentity = 'ownerIdentity' in options ? options.ownerIdentity : OWNER
+  const ownerShares = new Map<string, OwnerShare>()
+  const state = { disposed: false }
+  const viewerRead = {
+    cancelPendingCalls: vi.fn(),
+    recheckAdmission: vi.fn(),
+    closeViewerStreams: vi.fn(),
+    closeShare: vi.fn(),
+  }
+  const forks = { listForShare: vi.fn(() => []) }
+  const accessChanged = vi.fn()
+  const cancelShareTurn = vi.fn()
+  const cancelChildTurns = vi.fn()
+  const scheduleShareExpiry = vi.fn()
+  const reconcileSourceAccess = vi.fn()
+  const authority = createRelayAuthority({
+    ownerShares,
+    disposed: () => state.disposed,
+    forks,
+    ownerIdentity,
+    allowedSubjectIds: ['deployment-subject'],
+    viewerRead: () => viewerRead,
+    accessChanged,
+    cancelShareTurn,
+    cancelChildTurns,
+    scheduleShareExpiry,
+    reconcileSourceAccess,
+  } as never)
+  return {
+    authority, ownerShares, state, viewerRead, forks, accessChanged,
+    cancelShareTurn, cancelChildTurns, scheduleShareExpiry, reconcileSourceAccess,
+  }
+}
+
+describe('admission and granted subject identities', () => {
+  it('reads an empty ACL as the open mode and a non-empty one as the exact subjects', () => {
+    expect(requesterStillAdmitted({ accessMode: 'open', allowedSubjectIds: [] }, VIEWER)).toBe(true)
+    expect(requesterStillAdmitted({ accessMode: 'selected', allowedSubjectIds: [] }, VIEWER)).toBe(false)
+    expect(requesterStillAdmitted({ accessMode: 'selected', allowedSubjectIds: ['alice'] }, VIEWER)).toBe(true)
+    expect(requesterStillAdmitted({ accessMode: 'selected', allowedSubjectIds: [identityKeyOf(VIEWER)] }, VIEWER)).toBe(true)
+    expect(requesterStillAdmitted({ accessMode: 'selected', allowedSubjectIds: ['bob'] }, VIEWER)).toBe(false)
+  })
+
+  it('reads a canonical key and falls back to the owner identity for a bare subject', () => {
+    expect(identityForGrantedSubject(identityKeyOf(VIEWER), undefined)).toEqual(VIEWER)
+    expect(identityForGrantedSubject('bob', OWNER)).toEqual({ providerId: 'owner-p', tenantId: 'owner-t', subjectId: 'bob' })
+    expect(identityForGrantedSubject('bob', undefined)).toBeUndefined()
+  })
+})
+
+describe('relay access adoption', () => {
+  it('does not adopt a frame after disposal', () => {
+    const h = harness()
+    h.state.disposed = true
+    h.authority.applyRelayAccess('share-1', frame())
+    expect(h.accessChanged).not.toHaveBeenCalled()
+  })
+
+  it('keeps the newest version and ignores equal or older frames', () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    h.authority.applyRelayAccess('share-1', frame({ version: 3, sessionMode: 'write' }))
+    h.authority.applyRelayAccess('share-1', frame({ version: 3, sessionMode: 'view' }))
+    h.authority.applyRelayAccess('share-1', frame({ version: 2, sessionMode: 'view' }))
+    expect(h.ownerShares.get('share-1')?.sessionMode).toBe('view')
+    expect(h.ownerShares.get('share-1')?.revision).toBe(2)
+  })
+
+  it('holds a frame for a share this host no longer publishes', () => {
+    const h = harness()
+    h.authority.applyRelayAccess('share-1', frame({ version: 1, allowedSubjectIds: ['alice'] }))
+    expect(h.authority.viewerAdmitted('share-1', VIEWER)).toBe(true)
+    expect(h.ownerShares.size).toBe(0)
+  })
+
+  it('merges the stated tier, fork switch, ACL, and expiry into the stored record', () => {
+    const h = harness()
+    const key = identityKeyOf(VIEWER)
+    h.ownerShares.set('share-1', storedShare({
+      expiresAt: '2030-01-01T00:00:00Z', allowsFork: false, sessionMode: 'write',
+      access: {
+        mode: 'open', selected: [{ ...VIEWER, identityKey: key }],
+        deploymentAllowedSubjectIds: [], shareAllowedSubjectIds: [], broadenedByDeploymentSubjects: false,
+        identityKeyAcl: true,
+      },
+    }))
+    h.authority.applyRelayAccess('share-1', frame({
+      version: 2, sessionMode: 'view', allowedSubjectIds: [key, 'deployment-subject', 'bob'],
+    }))
+    const next = h.ownerShares.get('share-1')
+    // The stored record keeps its own tier; the Relay's tier reaches drivability through its snapshot.
+    expect(next).toMatchObject({ accessMode: 'open', sessionMode: 'write', allowsFork: false, revision: 2 })
+    expect(next).not.toHaveProperty('expiresAt')
+    expect(next?.allowedSubjectIds).toEqual([key, 'deployment-subject', 'bob'])
+    expect(next?.access?.selected).toEqual([
+      { ...VIEWER, identityKey: key },
+      { providerId: 'owner-p', tenantId: 'owner-t', subjectId: 'bob', identityKey: 'owner-p:owner-t:bob' },
+    ])
+    expect(next?.access?.broadenedByDeploymentSubjects).toBe(true)
+    expect(h.scheduleShareExpiry).toHaveBeenCalledWith(next)
+  })
+
+  it('omits an identity it cannot read from a bare subject when the host has no owner identity', () => {
+    const h = harness({ ownerIdentity: undefined })
+    h.ownerShares.set('share-1', storedShare())
+    h.authority.applyRelayAccess('share-1', frame({ version: 2, allowedSubjectIds: ['bob'] }))
+    expect(h.ownerShares.get('share-1')?.access?.selected).toEqual([])
+  })
+
+  it('takes the Relay fork switch and expiry when it states them', () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    h.authority.applyRelayAccess('share-1', frame({ version: 2, allowsFork: true, expiresAt: '2030-01-01T00:00:00Z' }))
+    expect(h.ownerShares.get('share-1')).toMatchObject({ allowsFork: true, expiresAt: '2030-01-01T00:00:00Z' })
+  })
+
+  it('ends work admitted against a narrower snapshot', () => {
+    const h = harness()
+    const admitted = { providerId: 'p', tenantId: 't', subjectId: 'alice' }
+    const revoked = { providerId: 'p', tenantId: 't', subjectId: 'bob' }
+    h.ownerShares.set('share-1', storedShare({ sessionMode: 'write', allowsFork: true, sessionId: 'session-1' }))
+    h.authority.applyRelayAccess('share-1', frame({
+      version: 1, sessionMode: 'write', allowsFork: true, allowedSubjectIds: ['alice', 'bob'],
+    }))
+    h.forks.listForShare.mockReturnValue([
+      { childSessionId: 'child-admitted', creator: admitted },
+      { childSessionId: 'child-revoked', creator: revoked },
+    ] as never)
+
+    h.authority.applyRelayAccess('share-1', frame({
+      version: 2, sessionMode: 'view', allowsFork: false, allowedSubjectIds: ['alice'],
+    }))
+    expect(h.viewerRead.cancelPendingCalls).toHaveBeenCalledWith('share-1')
+    expect(h.viewerRead.recheckAdmission).toHaveBeenCalledWith('share-1')
+    expect(h.viewerRead.closeViewerStreams).toHaveBeenCalledWith('share-1', revoked)
+    expect(h.cancelChildTurns).toHaveBeenCalledWith('share-1', revoked)
+    // A narrower admission can have ended a viewer's grant, and the host attributes no turn to a
+    // requester: it stops whatever the Session runs now.
+    expect(h.cancelShareTurn).toHaveBeenCalledWith('share-1')
+    // The Session's sandbox follows its shares, so the host reconciles it after the change.
+    expect(h.reconcileSourceAccess).toHaveBeenCalledWith('session-1')
+  })
+
+  it('stops no running turn when the adopted snapshot only widens access', () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    h.authority.applyRelayAccess('share-1', frame({ version: 1, allowedSubjectIds: ['alice'] }))
+    h.authority.applyRelayAccess('share-1', frame({ version: 2, allowedSubjectIds: ['alice', 'bob'] }))
+    // Adding a viewer ends nothing, and the tier did not change.
+    expect(h.cancelShareTurn).not.toHaveBeenCalled()
+    expect(h.reconcileSourceAccess).toHaveBeenCalledWith('session-1')
+  })
+
+  it('keeps a child whose creator is admitted while the fork switch stays on', () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare({ allowsFork: true }))
+    h.authority.applyRelayAccess('share-1', frame({ version: 1, allowsFork: true, allowedSubjectIds: ['alice'] }))
+    h.forks.listForShare.mockReturnValue([{ childSessionId: 'child', creator: VIEWER }] as never)
+    h.authority.applyRelayAccess('share-1', frame({ version: 2, allowsFork: true, sessionMode: 'write', allowedSubjectIds: ['alice'] }))
+    expect(h.cancelChildTurns).not.toHaveBeenCalled()
+    expect(h.viewerRead.closeViewerStreams).not.toHaveBeenCalled()
+  })
+
+  it('re-checks when only the ACL changed, by length or by value', () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    h.authority.applyRelayAccess('share-1', frame({ version: 1, allowsFork: false, allowedSubjectIds: ['alice'] }))
+    h.authority.applyRelayAccess('share-1', frame({ version: 2, allowsFork: false, allowedSubjectIds: ['alice', 'bob'] }))
+    h.authority.applyRelayAccess('share-1', frame({ version: 3, allowsFork: false, allowedSubjectIds: ['bob', 'carol'] }))
+    expect(h.viewerRead.recheckAdmission).toHaveBeenCalledTimes(2)
+  })
+
+  it('does not re-check anything when the snapshot states the same access', () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare({ sessionMode: 'write' }))
+    h.authority.applyRelayAccess('share-1', frame({ version: 1, sessionMode: 'write', allowsFork: false, allowedSubjectIds: ['alice'] }))
+    h.authority.applyRelayAccess('share-1', frame({ version: 2, sessionMode: 'write', allowsFork: false, allowedSubjectIds: ['alice'] }))
+    expect(h.viewerRead.recheckAdmission).not.toHaveBeenCalled()
+  })
+})
+
+describe('relay authority reads', () => {
+  const share = (): OwnerShare => storedShare()
+
+  it('adopts the state one Relay answers with', async () => {
+    const h = harness()
+    const record = { ...share(), sessionMode: 'write' as const }
+    h.ownerShares.set(record.shareId, record)
+    vi.stubGlobal('fetch', vi.fn(async () => Response.json({
+      version: 4, accessMode: 'selected', allowedSubjectIds: ['alice'], sessionMode: 'write', allowsFork: true,
+    })))
+    await expect(h.authority.readRelayAuthority(record)).resolves.toMatchObject({ ok: true })
+    expect(h.ownerShares.get(record.shareId)).toMatchObject({ accessMode: 'selected' })
+    expect(h.authority.drivableModeOf(record.shareId)).toBe('write')
+    // oxlint-disable-next-line typescript/no-base-to-string -- typed test doubles and mock calls.
+    const url = String(vi.mocked(fetch).mock.calls[0]?.[0])
+    expect(url).toContain('/__liveshare/requests?shareId=share-1')
+  })
+
+  it('adopts a state whose answer states no media type', async () => {
+    const h = harness()
+    const record = share()
+    h.ownerShares.set(record.shareId, record)
+    vi.stubGlobal('fetch', vi.fn(async () => new Response(new TextEncoder().encode(JSON.stringify({
+      version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view',
+    })))))
+    await expect(h.authority.readRelayAuthority(record)).resolves.toMatchObject({ ok: true })
+  })
+
+  it('invalidates authority held for a share that is gone or already offline', () => {
+    const h = harness()
+    h.authority.invalidateRelayAccess('absent')
+    expect(h.viewerRead.closeShare).toHaveBeenCalledWith('absent')
+    expect(h.cancelShareTurn).not.toHaveBeenCalled()
+    expect(h.cancelChildTurns).not.toHaveBeenCalled()
+    h.ownerShares.set('share-1', storedShare({ online: false }))
+    h.authority.invalidateRelayAccess('share-1')
+    expect(h.cancelShareTurn).not.toHaveBeenCalled()
+  })
+
+  it('invalidates held authority for an answer whose JSON cannot be read', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    vi.stubGlobal('fetch', vi.fn(async () => new Response('not json', { status: 200 })))
+    await expect(h.authority.readRelayAuthority(share())).resolves.toEqual({ ok: false })
+    expect(h.viewerRead.closeShare).toHaveBeenCalledWith('share-1')
+  })
+
+  it('invalidates held authority for a refused or unreadable answer', async () => {
+    for (const answer of [
+      () => Promise.resolve(new Response('no', { status: 500 })),
+      () => Promise.resolve(Response.json('not a record')),
+      () => Promise.resolve(Response.json({ version: 1 })),
+      () => Promise.reject(new Error('offline')),
+    ]) {
+      const h = harness()
+      h.ownerShares.set('share-1', storedShare({ online: true }))
+      vi.stubGlobal('fetch', vi.fn(answer))
+      await expect(h.authority.readRelayAuthority(share())).resolves.toEqual({ ok: false })
+      expect(h.viewerRead.closeShare).toHaveBeenCalledWith('share-1')
+      expect(h.cancelShareTurn).toHaveBeenCalledWith('share-1')
+    }
+  })
+
+  it('refuses a read that was cancelled before or during the request', async () => {
+    const h = harness()
+    const controller = new AbortController()
+    controller.abort(new Error('cancelled'))
+    await expect(h.authority.readRelayAuthority(share(), controller.signal)).rejects.toThrow('cancelled')
+
+    const mid = new AbortController()
+    vi.stubGlobal('fetch', vi.fn(async () => {
+      mid.abort(new Error('left'))
+      return Response.json({ version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view' })
+    }))
+    await expect(h.authority.readRelayAuthority(share(), mid.signal)).rejects.toThrow('left')
+  })
+
+  it('fences a read whose share was invalidated or replaced while it ran', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    vi.stubGlobal('fetch', vi.fn(async () => {
+      h.authority.invalidateRelayAccess('share-1')
+      return Response.json({ version: 9, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view' })
+    }))
+    await expect(h.authority.readRelayAuthority(share())).resolves.toEqual({ ok: false })
+    expect(h.ownerShares.get('share-1')?.revision).toBe(1)
+    expect(h.viewerRead.closeShare).toHaveBeenCalledTimes(1)
+  })
+
+  it('fences a read whose share token or Relay changed while it ran', async () => {
+    for (const change of [
+      { gatewayToken: 'new-token' },
+      { relay: 'https://other.example.test/liveshare' },
+    ]) {
+      const h = harness()
+      h.ownerShares.set('share-1', storedShare())
+      vi.stubGlobal('fetch', vi.fn(async () => {
+        h.ownerShares.set('share-1', storedShare(change))
+        return Response.json({ version: 9, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view' })
+      }))
+      await expect(h.authority.readRelayAuthority(share())).resolves.toEqual({ ok: false })
+    }
+  })
+
+  it('fences a read that finishes after this host was disposed', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    vi.stubGlobal('fetch', vi.fn(async () => {
+      h.state.disposed = true
+      return Response.json({ version: 9, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view' })
+    }))
+    await expect(h.authority.readRelayAuthority(share())).resolves.toEqual({ ok: false })
+  })
+})
+
+describe('relay authority refresh and drivability', () => {
+  it('refuses a refresh for a missing or disposed share', async () => {
+    const h = harness()
+    await expect(h.authority.refreshRelayAccess('absent')).rejects.toThrow('share-not-found')
+    h.ownerShares.set('share-1', storedShare())
+    h.state.disposed = true
+    await expect(h.authority.refreshRelayAccess('share-1')).rejects.toThrow('share-not-found')
+  })
+
+  it('resolves a refresh whose read established authority', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    vi.stubGlobal('fetch', vi.fn(async () => Response.json({
+      version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view',
+    })))
+    await expect(h.authority.refreshRelayAccess('share-1')).resolves.toBeUndefined()
+  })
+
+  it('refuses a refresh whose read could not establish authority', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    vi.stubGlobal('fetch', vi.fn(async () => new Response('no', { status: 500 })))
+    await expect(h.authority.refreshRelayAccess('share-1')).rejects.toThrow('Relay access state is unavailable')
+  })
+
+  it('reports admission only while this host holds unexpired authority for the viewer', () => {
+    const h = harness()
+    expect(h.authority.viewerAdmitted('share-1', VIEWER)).toBe(false)
+    h.ownerShares.set('share-1', storedShare())
+    h.authority.applyRelayAccess('share-1', frame({ allowedSubjectIds: ['alice'] }))
+    expect(h.authority.viewerAdmitted('share-1', VIEWER)).toBe(true)
+    expect(h.authority.viewerAdmitted('share-1', { ...VIEWER, subjectId: 'bob' })).toBe(false)
+    h.authority.applyRelayAccess('share-1', frame({ version: 2, allowedSubjectIds: ['alice'], expiresAt: '2000-01-01T00:00:00Z' }))
+    expect(h.authority.viewerAdmitted('share-1', VIEWER)).toBe(false)
+    h.state.disposed = true
+    expect(h.authority.viewerAdmitted('share-1', VIEWER)).toBe(false)
+  })
+
+  it('forgets held authority when the worker reconnects a share', () => {
+    const h = harness()
+    h.ownerShares.set('share-1', storedShare())
+    h.authority.applyRelayAccess('share-1', frame({ allowedSubjectIds: ['alice'] }))
+    h.authority.forgetRelayAccess('share-1')
+    expect(h.authority.viewerAdmitted('share-1', VIEWER)).toBe(false)
+    expect(h.accessChanged).toHaveBeenCalled()
+  })
+
+  it('reports the narrower of the stored and Relay tiers, and nothing without authority', () => {
+    const h = harness()
+    expect(h.authority.drivableModeOf('share-1')).toBeUndefined()
+    h.ownerShares.set('share-1', storedShare({ sessionMode: 'write' }))
+    expect(h.authority.drivableModeOf('share-1')).toBeUndefined()
+    h.authority.applyRelayAccess('share-1', frame({ sessionMode: 'write' }))
+    expect(h.authority.drivableModeOf('share-1')).toBe('write')
+    h.authority.applyRelayAccess('share-1', frame({ version: 2, sessionMode: 'view' }))
+    expect(h.authority.drivableModeOf('share-1')).toBe('view')
+
+    h.ownerShares.set('share-1', storedShare({ sessionMode: 'view' }))
+    h.authority.applyRelayAccess('share-1', frame({ version: 3, sessionMode: 'write' }))
+    expect(h.authority.drivableModeOf('share-1')).toBe('view')
+
+    h.ownerShares.set('share-1', storedShare({ expiresAt: '2000-01-01T00:00:00Z' }))
+    expect(h.authority.drivableModeOf('share-1')).toBeUndefined()
+    h.state.disposed = true
+    expect(h.authority.drivableModeOf('share-1')).toBeUndefined()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/relay-pre-step-admission.host.spec.ts b/packages/experimental/liveshare/tests/relay-pre-step-admission.host.spec.ts
new file mode 100644
index 0000000000..faf7a00b10
--- /dev/null
+++ b/packages/experimental/liveshare/tests/relay-pre-step-admission.host.spec.ts
@@ -0,0 +1,114 @@
+/** Queued reader input is rechecked against Relay admission at the actual pre-step, from its own message source. */
+import { Context } from '@deepseek-ai/cordis'
+import type { Agent, PreStepDecision } from '@deepseek-ai/dsh-agent'
+import { createUserMessage } from '@deepseek-ai/dsh-llm'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { SessionId } from '@deepseek-ai/dsh-session'
+import type { SessionRequestId } from '@deepseek-ai/dsh-api-session-controller'
+import { mkdtempSync, writeFileSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { expect, it, onTestFinished, vi } from 'vitest'
+import { apply } from '../src/host/share-host.ts'
+
+vi.mock('../src/host/tunnel-worker.ts', () => ({ TunnelWorker: class {
+  start() {}
+  onEvent() { return () => {} }
+  send() {}
+  stop() { return Promise.resolve() }
+} }))
+
+it('rejects queued viewer input after Relay independently revoked it', async () => {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-pre-step-'))
+  const file = join(directory, 'owner.json')
+  writeFileSync(file, JSON.stringify({ instanceId: 'owner', relayUrl: 'https://relay.test',
+    shares: [{ relay: 'https://relay.test', shareId: 'share', sessionId: 'source',
+      sessionTitle: 'Source', accessMode: 'selected', gatewayToken: 'token', allowedSubjectIds: ['viewer'],
+      createdAt: '2026-10-08T00:00:00Z', sessionMode: 'write', allowsFork: true }] }))
+  const ctx = new Context()
+  ctx.provide('connection', { fetch: { register: () => () => {} } } as never)
+  const actor = { providerId: 'provider', tenantId: 'tenant', subjectId: 'viewer' }
+  const requestId = 'queued-input' as SessionRequestId
+  vi.stubGlobal('fetch', async (input: RequestInfo | URL, init?: RequestInit) => {
+    const request = new Request(input, init)
+    if (request.url.endsWith('/owner-credential')) return Response.json({ supported: true })
+    expect(request.headers.get('authorization')).toBe('Bearer token')
+    return Response.json({ version: 2, accessMode: 'selected', allowedSubjectIds: [], sessionMode: 'write', requests: [] })
+  })
+  const stop = await apply(ctx, { ownerStateFile: file })
+  onTestFinished(async () => {
+    await stop()
+    await ctx.fiber.dispose()
+    vi.unstubAllGlobals()
+    rmSync(directory, { recursive: true, force: true })
+  })
+  // The message records the reader it came from; the turn it enters has decided no requester yet.
+  const message = createUserMessage({ content: [{ type: 'text', text: 'queued' }],
+    source: { kind: 'user', rpcId: requestId, principal: { kind: 'share-viewer', shareId: 'share', actor } } })
+  const agent = { id: SessionId('source'), session: { id: SessionId('source') } } as Agent
+  const next = vi.fn(async (): Promise<PreStepDecision> => ({ kind: 'enter', messages: [message] }))
+  expect(await ctx.waterfall('agent/pre-step', { modelSelection: { provider: 'mock', model: 'mock' }, agent, turn: 4, step: 1, messages: [message],
+    signal: new AbortController().signal }, next)).toEqual({ kind: 'reject' })
+  expect(next).toHaveBeenCalledOnce()
+})
+
+it('rejects a steer of a revoked reader when its step starts', async () => {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-steer-'))
+  const file = join(directory, 'owner.json')
+  writeFileSync(file, JSON.stringify({ instanceId: 'owner', relayUrl: 'https://relay.test',
+    shares: [{ relay: 'https://relay.test', shareId: 'share', sessionId: 'source',
+      sessionTitle: 'Source', accessMode: 'selected', gatewayToken: 'token', allowedSubjectIds: ['viewer'],
+      createdAt: '2026-10-08T00:00:00Z', sessionMode: 'write', allowsFork: true }] }))
+  const ctx = new Context()
+  ctx.provide('connection', { fetch: { register: () => () => {} } } as never)
+  const actor = { providerId: 'provider', tenantId: 'tenant', subjectId: 'viewer' }
+  vi.stubGlobal('fetch', async (input: RequestInfo | URL, init?: RequestInit) => {
+    const request = new Request(input, init)
+    if (request.url.endsWith('/owner-credential')) return Response.json({ supported: true })
+    return Response.json({ version: 2, accessMode: 'selected', allowedSubjectIds: [], sessionMode: 'write', requests: [] })
+  })
+  const stop = await apply(ctx, { ownerStateFile: file })
+  onTestFinished(async () => {
+    await stop()
+    await ctx.fiber.dispose()
+    vi.unstubAllGlobals()
+    rmSync(directory, { recursive: true, force: true })
+  })
+  const steered = createUserMessage({ content: [{ type: 'text', text: 'steer' }],
+    source: { kind: 'user', rpcId: 'steer-1' as SessionRequestId, principal: { kind: 'share-viewer', shareId: 'share', actor } } })
+  const agent = { id: SessionId('source'), session: { id: SessionId('source') } } as Agent
+  const next = vi.fn(async (): Promise<PreStepDecision> => ({ kind: 'enter', messages: [steered] }))
+  expect(await ctx.waterfall('agent/pre-step', { modelSelection: { provider: 'mock', model: 'mock' }, agent, turn: 2, step: 2, messages: [steered],
+    signal: new AbortController().signal }, next)).toEqual({ kind: 'reject' })
+})
+
+it('keeps a normal admitted viewer step entering the model', async () => {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-pre-step-ok-'))
+  const file = join(directory, 'owner.json')
+  const actor = { providerId: 'provider', tenantId: 'tenant', subjectId: 'viewer' }
+  writeFileSync(file, JSON.stringify({ instanceId: 'owner', relayUrl: 'https://relay.test',
+    shares: [{ relay: 'https://relay.test', shareId: 'share', sessionId: 'source',
+      sessionTitle: 'Source', accessMode: 'selected', gatewayToken: 'token', allowedSubjectIds: [identityKeyOf(actor)],
+      createdAt: '2026-10-08T00:00:00Z', sessionMode: 'write', allowsFork: true }] }))
+  const ctx = new Context()
+  ctx.provide('connection', { fetch: { register: () => () => {} } } as never)
+  vi.stubGlobal('fetch', async (input: RequestInfo | URL, init?: RequestInit) => {
+    const request = new Request(input, init)
+    if (request.url.endsWith('/owner-credential')) return Response.json({ supported: true })
+    return Response.json({ version: 2, accessMode: 'selected', allowedSubjectIds: [identityKeyOf(actor)],
+      sessionMode: 'write', requests: [] })
+  })
+  const stop = await apply(ctx, { ownerStateFile: file })
+  onTestFinished(async () => {
+    await stop()
+    await ctx.fiber.dispose()
+    vi.unstubAllGlobals()
+    rmSync(directory, { recursive: true, force: true })
+  })
+  const message = createUserMessage({ content: [{ type: 'text', text: 'normal' }],
+    source: { kind: 'user', rpcId: 'normal-1' as SessionRequestId, principal: { kind: 'share-viewer', shareId: 'share', actor } } })
+  const agent = { id: SessionId('source'), session: { id: SessionId('source') } } as Agent
+  const next = vi.fn(async (): Promise<PreStepDecision> => ({ kind: 'enter', messages: [message] }))
+  expect(await ctx.waterfall('agent/pre-step', { modelSelection: { provider: 'mock', model: 'mock' }, agent, turn: 3, step: 1, messages: [message],
+    signal: new AbortController().signal }, next)).toMatchObject({ kind: 'enter' })
+})
diff --git a/packages/experimental/liveshare/tests/relay-target-admission.host.spec.ts b/packages/experimental/liveshare/tests/relay-target-admission.host.spec.ts
new file mode 100644
index 0000000000..4e2f65e90a
--- /dev/null
+++ b/packages/experimental/liveshare/tests/relay-target-admission.host.spec.ts
@@ -0,0 +1,236 @@
+/**
+ * Reader access binds the receiving Session: the answer of the `share-viewer` policy the share host
+ * registers for each Session a reader names, the Gateway refusing a reader Peer before the controller
+ * runs, and the pre-step re-check of queued reader input, including input recovered from a durable Inbox.
+ */
+import { Context } from '@deepseek-ai/cordis'
+import { SessionId, SessionSeq } from '@deepseek-ai/dsh-session'
+import type { Agent, PreStepDecision } from '@deepseek-ai/dsh-agent'
+import { createUserMessage } from '@deepseek-ai/dsh-llm'
+import { mountAgentLoopTestDependencies, mountAgentLoopTestHarness } from '@deepseek-ai/dsh-agent-loop-testkit'
+import TypertGateway from '@deepseek-ai/dsh-api-gateway'
+import RemoteAccessService from '@deepseek-ai/dsh-api-remote-access'
+import type { SessionRequestId } from '@deepseek-ai/dsh-api-session-controller'
+import { Peer } from '@deepseek-ai/dsh-client-connection'
+import * as JsonlSessionPersistence from '../../../session/session-persistence-jsonl/src/index.ts'
+import { TypertRegistry } from '@deepseek-ai/dsh-typert-registry'
+import { createSessionTestController } from '../../../api/session-controller/tests/test-remote.ts'
+import { randomUUID } from 'node:crypto'
+import { mkdtempSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { dirname, join } from 'node:path'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import type { TunnelRegistrationToken, TunnelWorkerEvent } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import { apply } from '../src/host/share-host.ts'
+import { shareViewerPrincipal } from '../src/host/viewer-principal.ts'
+
+const worker = vi.hoisted(() => ({ event: undefined as ((event: TunnelWorkerEvent) => void) | undefined }))
+vi.mock('../src/host/tunnel-worker.ts', () => ({ TunnelWorker: class {
+  start() {}
+  onEvent(callback: (event: TunnelWorkerEvent) => void) { worker.event = callback; return () => {} }
+  send() {}
+  stop() { worker.event = undefined; return Promise.resolve() }
+} }))
+const actor = { providerId: 'fixture', tenantId: 'tenant', subjectId: 'viewer' }
+const stranger = { ...actor, subjectId: 'other-viewer' }
+
+type Mode = 'view' | 'write'
+
+async function harness(empty = false, mode: Mode = 'write', options: { readonly gateway?: boolean } = {}) {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-agent-target-'))
+  onTestFinished(() => { rmSync(directory, { recursive: true, force: true }) })
+  const file = join(directory, 'owner.json')
+  const share = (shareId: string, sessionId: string) => ({ relay: 'https://relay.test', shareId, sessionId,
+    sessionTitle: sessionId, accessMode: 'selected', gatewayToken: 'token', allowedSubjectIds: [identityKeyOf(actor)],
+    createdAt: '2026-10-12T00:00:00Z', sessionMode: mode, allowsFork: mode !== 'view' })
+  writeFileSync(file, JSON.stringify({ instanceId: 'owner', relayUrl: 'https://relay.test',
+    shares: empty ? [] : [share('share', 'source'), share('other-share', 'other-source')] }))
+  const forks = new ForkRegistry(join(directory, 'forks.json'))
+  for (const [shareId, sourceSessionId, childSessionId, creator] of [
+    ['share', 'source', 'own-child', actor], ['share', 'source', 'stranger-child', stranger],
+    ['other-share', 'other-source', 'other-child', actor],
+  ] as const) await forks.record({ shareId, sourceSessionId, childSessionId, creator,
+    boundary: 0, createdAt: '2026-10-12T00:00:00Z' })
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  ctx.provide('connection', {
+    fetch: { register: () => () => {} },
+    createPeer: (peer: ConstructorParameters<typeof Peer>[1]) => new Peer(ctx, peer),
+  } as never)
+  await ctx.plugin(TypertRegistry)
+  await ctx.plugin(RemoteAccessService)
+  if (options.gateway === true) await ctx.plugin(TypertGateway)
+  const fetch = vi.fn(async (input: RequestInfo | URL, init?: RequestInit) => {
+    const request = new Request(input, init)
+    expect(new URL(request.url).origin).toBe('https://relay.test')
+    if (request.url.endsWith('/owner-credential')) return Response.json({ supported: true })
+    return Response.json({ version: 1, accessMode: 'selected', allowedSubjectIds: [identityKeyOf(actor), identityKeyOf(stranger)],
+      sessionMode: mode, requests: [] })
+  })
+  vi.stubGlobal('fetch', fetch)
+  onTestFinished(() => { vi.unstubAllGlobals() })
+  const start = async () => {
+    const stop = await apply(ctx, { ownerStateFile: file })
+    onTestFinished(stop)
+    // The policy registers once the remote-access service is injected, which settles after this tick.
+    await new Promise((resolve) => { setTimeout(resolve, 0) })
+    // The Relay's complete authority for both shares, as the gateway socket delivers it.
+    for (const shareId of empty ? [] : ['share', 'other-share']) {
+      worker.event?.({ type: 'share-access-state', registrationToken: randomUUID() as TunnelRegistrationToken,
+        shareId, version: 1, accessMode: 'selected',
+        allowedSubjectIds: [identityKeyOf(actor), identityKeyOf(stranger)],
+        sessionMode: mode })
+    }
+  }
+  /** The registered policy's answer, through the remote access service, for this reader of `share` on one Session. */
+  const decide = (sessionId: string, action: 'session/prompt' | 'session/cancel', args?: Readonly<Record<string, unknown>>) =>
+    ctx.remoteAccess.decide({ principal: shareViewerPrincipal('share', actor), action,
+      resources: [{ kind: 'session', id: SessionId(sessionId) }], ...(args === undefined ? {} : { args }) })
+  const agent = (id: string) => ({ id: SessionId(id), session: { id: SessionId(id) } }) as Agent
+  return { ctx, start, agent, fetch, file, decide }
+}
+
+describe('share-bound receiving Session admission', () => {
+  it.each([
+    ['private', 'fork-unknown-child'],
+    ['other-source', 'fork-unknown-child'],
+    ['other-child', 'fork-unknown-child'],
+    ['stranger-child', 'fork-viewer-mismatch'],
+  ])('denies reader prompt and cancel on %s', async (id, reason) => {
+    const fixture = await harness()
+    await fixture.start()
+    expect(fixture.decide(id, 'session/prompt')).toEqual({ kind: 'deny', reason })
+    expect(fixture.decide(id, 'session/cancel')).toEqual({ kind: 'deny', reason })
+  })
+
+  it('refuses a reader Peer at the Gateway before the controller prompts or cancels an unshared Session', async () => {
+    const fixture = await harness(false, 'write', { gateway: true })
+    await mountAgentLoopTestDependencies(fixture.ctx)
+    const driver = await mountAgentLoopTestHarness(fixture.ctx)
+    await createSessionTestController(fixture.ctx, {
+      cwd: process.cwd(), defaultModelSelection: () => ({ provider: 'unused', model: 'unused' }),
+    })
+    const agent = await driver.create(SessionId('private'))
+    const followup = vi.spyOn(agent, 'followup')
+    const cancel = vi.spyOn(agent, 'cancel')
+    await fixture.start()
+    const reader = new Peer(fixture.ctx, { principal: shareViewerPrincipal('share', actor) })
+    await expect(fixture.ctx.typertGateway.invoke({ peer: reader, namespace: 'session', method: 'prompt',
+      args: { request: { sessionId: agent.session.id, requestId: 'direct' as SessionRequestId, mode: 'queue',
+        content: [{ type: 'text', text: 'attack' }] } } }))
+      .rejects.toMatchObject({ code: 'remote-access/denied', details: { action: 'session/prompt', reason: 'fork-unknown-child' } })
+    await expect(fixture.ctx.typertGateway.invoke({ peer: reader, namespace: 'session', method: 'cancel',
+      args: { request: { sessionId: agent.session.id } } }))
+      .rejects.toMatchObject({ code: 'remote-access/denied', details: { action: 'session/cancel', reason: 'fork-unknown-child' } })
+    expect(followup).not.toHaveBeenCalled()
+    expect(cancel).not.toHaveBeenCalled()
+    expect(agent.inbox.nextTurn).toEqual([])
+  })
+
+  it('allows the reader its own fork, and its source only once a confined layer exists', async () => {
+    const fixture = await harness()
+    await fixture.start()
+    expect(fixture.decide('own-child', 'session/prompt')).toEqual({ kind: 'allow' })
+    // A concrete prompt also needs the child's installed ceiling, which preparing the child installs.
+    expect(fixture.decide('own-child', 'session/prompt', { request: {} }))
+      .toEqual({ kind: 'deny', reason: 'fork-ceiling-uninstalled' })
+    expect(fixture.decide('source', 'session/prompt')).toEqual({ kind: 'deny', reason: 'source-write-unavailable' })
+  })
+
+  it('recomputes the reader\u2019s snapshot from the registered policy when the Relay ends its admission', async () => {
+    const fixture = await harness()
+    await fixture.start()
+    const reader = shareViewerPrincipal('share', actor)
+    const resources = () => {
+      const baseline = fixture.ctx.remoteAccess.snapshotFor(reader)
+      return baseline.owner ? [] : baseline.grants.map(grant => grant.resource)
+    }
+    expect(resources()).toEqual([
+      { kind: 'global' }, { kind: 'session', id: 'source' }, { kind: 'session', id: 'own-child' },
+    ])
+    const invalidate = vi.spyOn(fixture.ctx.remoteAccess, 'invalidate')
+    worker.event?.({ type: 'share-access-state', registrationToken: randomUUID() as TunnelRegistrationToken,
+      shareId: 'share', version: 2, accessMode: 'selected', allowedSubjectIds: [identityKeyOf(stranger)], sessionMode: 'write' })
+    expect(invalidate).toHaveBeenCalled()
+    expect(resources()).toEqual([])
+    expect(fixture.decide('own-child', 'session/prompt')).toEqual({ kind: 'deny', reason: 'viewer-not-authorized' })
+  })
+
+  it('admits the reader’s own child, and refuses a source it cannot confine', async () => {
+    // Both tiers drive the shared Session while its confined layer stands. This fixture installs none,
+    // so the source is refused for the layer rather than for the tier, and the reader's own branch is
+    // driven.
+    const fixture = await harness(false, 'view')
+    await fixture.start()
+    expect(fixture.decide('own-child', 'session/prompt')).toEqual({ kind: 'allow' })
+    expect(fixture.decide('source', 'session/prompt')).toEqual({ kind: 'deny', reason: 'source-write-unavailable' })
+  })
+
+
+  it('retains ordinary Owner pre-step when no reader input is recorded', async () => {
+    const fixture = await harness(true)
+    await fixture.start()
+    const next = async (): Promise<PreStepDecision> => ({ kind: 'enter', messages: [] })
+    expect(await fixture.ctx.waterfall('agent/pre-step', { modelSelection: { provider: 'mock', model: 'mock' }, agent: fixture.agent('private'), turn: 1, step: 1,
+      messages: [], signal: new AbortController().signal }, next)).toEqual({ kind: 'enter', messages: [] })
+  })
+
+  it.each(['private', 'other-source', 'other-child', 'stranger-child'])(
+    'rejects queued reader pre-step on %s independently of API admission', async (id) => {
+      const fixture = await harness()
+      await fixture.start()
+      const message = createUserMessage({ content: [{ type: 'text', text: 'queued' }],
+        source: { kind: 'user', rpcId: 'queued' as SessionRequestId, principal: shareViewerPrincipal('share', actor) } })
+      const next = async (): Promise<PreStepDecision> => ({ kind: 'enter', messages: [message] })
+      expect(await fixture.ctx.waterfall('agent/pre-step', { modelSelection: { provider: 'mock', model: 'mock' }, agent: fixture.agent(id), turn: 1, step: 1,
+        messages: [message], signal: new AbortController().signal }, next)).toEqual({ kind: 'reject' })
+    },
+  )
+
+  it('rejects a deleted share from recovered durable Inbox without process-local share history', async () => {
+    const fixture = await harness(true)
+    await mountAgentLoopTestDependencies(fixture.ctx)
+    await fixture.ctx.plugin(JsonlSessionPersistence, { root: join(dirname(fixture.file), 'sessions'), compression: 'none' })
+    await mountAgentLoopTestHarness(fixture.ctx)
+    const reached = Promise.withResolvers<PreStepDecision>()
+    fixture.ctx.on('agent/pre-step', async (_input, next) => {
+      const decision = await next()
+      reached.resolve(decision)
+      // If admission regresses, stop before a real model call while retaining the observed verdict.
+      return { kind: 'reject' }
+    })
+    await fixture.start()
+    // The recovered message names its reader in its own durable source; no share-host state names it.
+    const message = createUserMessage({ content: [{ type: 'text', text: 'revoked queued input' }],
+      source: { kind: 'user', rpcId: 'recovered-input' as SessionRequestId,
+        principal: shareViewerPrincipal('deleted-share', actor) } })
+    // `prepare` only mints the header; a detached Session cannot append, so the event is written
+    // through the persistence seam and the resumed Agent recovers it from the stored log.
+    const stored = fixture.ctx.sessions.prepare(SessionId('source'))
+    const writer = await fixture.ctx.sessionPersistence.create(stored.header)
+    try {
+      await writer.append([{
+        type: 'agent/inbox/spliced', seq: SessionSeq(0), time: 1,
+        data: { target: 'next-turn', start: 0, removedCount: 0, inserted: [message] },
+      }])
+    } finally {
+      await writer.close()
+    }
+    // The recovered turn reaches the pre-step waterfall only after a model route resolves.
+    const handle = await fixture.ctx.agents.resume({
+      resumeSessionId: stored.id,
+      agentOptions: { provider: 'unused', model: 'unused' },
+    })
+    const agent = handle.agent
+    expect(agent.inbox.nextTurn).toHaveLength(1)
+    const formed = vi.fn()
+    fixture.ctx.on('agent/request', formed)
+    agent.steer(createUserMessage({ content: [{ type: 'text', text: 'resume' }], source: { kind: 'user' } }))
+    expect(await reached.promise).toEqual({ kind: 'reject' })
+    await agent.whenIdle()
+    expect(formed).not.toHaveBeenCalled()
+    expect(agent.session.snapshotEvents().some(event => event.type === 'step/start')).toBe(false)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/relay-transaction-race.spec.ts b/packages/experimental/liveshare/tests/relay-transaction-race.spec.ts
new file mode 100644
index 0000000000..bf72da1370
--- /dev/null
+++ b/packages/experimental/liveshare/tests/relay-transaction-race.spec.ts
@@ -0,0 +1,294 @@
+/** Owner operations keep their captured Relay across asynchronous network and worker completions. */
+import { Context } from '@deepseek-ai/cordis'
+import type { TunnelRegistrationToken, TunnelWorkerEvent } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { randomUUID } from 'node:crypto'
+import type { TunnelWorkerInput } from '../src/host/tunnel-worker.ts'
+import { existsSync, mkdtempSync, readFileSync, realpathSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { apply } from '../src/host/share-host.ts'
+import type {} from '../src/index.ts'
+
+const worker = vi.hoisted(() => ({
+  commands: [] as TunnelWorkerInput[],
+  listener: undefined as ((event: TunnelWorkerEvent) => void) | undefined,
+  sent: undefined as ((command: TunnelWorkerInput) => void) | undefined,
+}))
+vi.mock('../src/host/tunnel-worker.ts', () => ({ TunnelWorker: class {
+  start() {}
+  onEvent(listener: (event: TunnelWorkerEvent) => void) { worker.listener = listener; return () => {} }
+  send(command: TunnelWorkerInput) { worker.commands.push(command); worker.sent?.(command) }
+  stop() { worker.listener = undefined; return Promise.resolve() }
+} }))
+
+const RELAY_A = 'https://relay-a.test/prefix'
+const RELAY_B = 'https://relay-b.test/other'
+const ORIGIN = 'http://owner.test'
+
+function deferred<T>() {
+  let resolve!: (value: T) => void
+  const promise = new Promise<T>((accept) => { resolve = accept })
+  return { promise, resolve }
+}
+
+function credential(subjectId: string): string {
+  return `${Buffer.from(JSON.stringify({ subjectId, displayName: subjectId })).toString('base64url')}.signature`
+}
+
+function response(body: unknown): Response {
+  return Response.json(body)
+}
+
+interface CapturedFetch {
+  readonly url: URL
+  readonly method: string
+  readonly headers: Headers
+  readonly body: unknown
+}
+
+function relayFetch(handle: (call: CapturedFetch) => Promise<Response> | Response) {
+  const calls: CapturedFetch[] = []
+  vi.stubGlobal('fetch', async (input: string | URL | Request, init?: RequestInit) => {
+    const request = new Request(input, init)
+    const body: unknown = init?.body === undefined ? undefined : await request.json()
+    const call = { url: new URL(request.url), method: request.method, headers: request.headers, body }
+    calls.push(call)
+    if (![RELAY_A, RELAY_B].some(relay => request.url.startsWith(`${relay}/__liveshare/`))) {
+      throw new Error(`unexpected fixture request ${request.url}`)
+    }
+    return handle(call)
+  })
+  return calls
+}
+
+const closers: Array<() => Promise<void> | void> = []
+const stoppers: Array<() => Promise<void>> = []
+const releases: Array<() => void> = []
+const requests = new Set<Promise<Response>>()
+afterEach(async () => {
+  try {
+    for (const release of releases.splice(0)) release()
+    for (const stop of stoppers.splice(0).reverse()) await stop()
+    await Promise.allSettled(requests)
+    requests.clear()
+    for (const close of closers.splice(0).reverse()) await close()
+  } finally {
+    vi.unstubAllGlobals()
+    worker.commands.length = 0
+    worker.listener = undefined
+    worker.sent = undefined
+  }
+})
+
+async function host(options: { readonly shares?: readonly { shareId: string; relay: string }[]
+  readonly stored?: { relay: string; credential: string } } = {}) {
+  const temporary = realpathSync(mkdtempSync(join(tmpdir(), 'liveshare-relay-transaction-')))
+  closers.push(() => { rmSync(temporary, { recursive: true, force: true }) })
+  const ownerStateFile = join(temporary, 'owner-shares.json')
+  const ownerCredentialFile = join(temporary, 'owner-credential.json')
+  writeFileSync(ownerStateFile, JSON.stringify({ instanceId: 'instance-1', relayUrl: RELAY_A,
+    shares: (options.shares ?? []).map(share => ({
+      ...share, sessionId: 'session', sessionTitle: 'Session', accessMode: 'open', gatewayToken: `token-${share.shareId}`,
+      allowedSubjectIds: [], createdAt: '2026-10-08T00:00:00Z', sessionMode: 'view',
+    })) }))
+  if (options.stored !== undefined) writeFileSync(ownerCredentialFile, JSON.stringify({
+    ...options.stored, subjectId: 'owner-a', displayName: 'owner-a',
+  }))
+  const ctx = new Context()
+  closers.push(() => ctx.fiber.dispose())
+  const routes = new Map<string, (request: Request) => Promise<Response>>()
+  Object.assign(ctx, { connection: { fetch: { register: (route: {
+    path: string
+    fetch: (request: Request) => Promise<Response>
+  }) => { routes.set(route.path, route.fetch); return async () => { routes.delete(route.path) } } } } })
+  const dispose = await apply(ctx, { ownerStateFile, ownerCredentialFile })
+  stoppers.push(dispose)
+  const call = (path: string, body?: unknown): Promise<Response> => {
+    const route = routes.get(`/api/liveshare.${path.split('?')[0]}`)
+    if (route === undefined) throw new Error(`missing route ${path}`)
+    const pending = route(body instanceof Request ? body : new Request(`${ORIGIN}/api/liveshare.${path}`, body === undefined ? undefined : {
+      method: 'POST', headers: { origin: ORIGIN, 'content-type': 'application/json' }, body: JSON.stringify(body),
+    }))
+    requests.add(pending)
+    return pending
+  }
+  return { call, ctx, ownerStateFile, ownerCredentialFile, dispose }
+}
+
+async function switchRelay(ctx: Context, relayUrl = RELAY_B): Promise<void> {
+  expect(await ctx.liveshareShares.setRelay({ relayUrl })).toMatchObject({ effective: relayUrl })
+}
+
+describe('Relay operation transactions', () => {
+  it.each(['switch', 'switch-back', 'dispose'])('consumes redemption and refuses a late credential after %s', async (change) => {
+    const exchanging = deferred<undefined>()
+    const exchanged = deferred<Response>()
+    releases.push(() => { exchanged.resolve(response({ credential: credential('owner-a') })) })
+    const calls = relayFetch((call) => {
+      if (call.method === 'POST' && call.url.pathname.endsWith('/owner-credential')) {
+        exchanging.resolve(undefined)
+        return exchanged.promise
+      }
+      return response({ supported: true, claimed: true })
+    })
+    const fixture = await host({ shares: [{ shareId: 'share-b', relay: RELAY_B }] })
+    const { state } = await (await fixture.call('ownerLoginStart', {})).json() as { state: string }
+    const redeeming = fixture.call('ownerLoginRedeem', { state, code: 'code-a' })
+    await exchanging.promise
+    if (change === 'dispose') await fixture.dispose()
+    else {
+      await switchRelay(fixture.ctx)
+      if (change === 'switch-back') await switchRelay(fixture.ctx, RELAY_A)
+    }
+    exchanged.resolve(response({ credential: credential('owner-a') }))
+    const redeemed = await redeeming
+    expect(redeemed.status).toBe(403)
+    expect(await redeemed.json()).toEqual({ error: 'owner-login-mismatch' })
+    expect(existsSync(fixture.ownerCredentialFile)).toBe(false)
+    expect(calls.filter(call => call.url.pathname.endsWith('/claim'))).toEqual([])
+    const exchange = calls.find(call => call.method === 'POST')
+    expect(exchange?.url.href).toBe(`${RELAY_A}/__liveshare/owner-credential`)
+    expect(exchange?.body).toMatchObject({ code: 'code-a', instanceKey: 'instance-1' })
+    const payload = exchange?.body as { readonly code_verifier?: string }
+    expect(payload.code_verifier).toMatch(/^[A-Za-z0-9_-]{43}$/u)
+    const replayed = await fixture.call('ownerLoginRedeem', { state, code: 'code-a' })
+    expect(await replayed.json()).toEqual({ error: 'owner-login-expired' })
+  })
+
+  it('refuses a credential upload when the Relay changes while its request body is buffered', async () => {
+    relayFetch(() => response({ supported: true }))
+    const fixture = await host()
+    const body = deferred<ReadableStreamDefaultController<Uint8Array>>()
+    const request = new Request(`${ORIGIN}/api/liveshare.ownerCredential`, {
+      method: 'POST',
+      body: new ReadableStream<Uint8Array>({ start(controller) { body.resolve(controller) } }),
+      // Node requires duplex for a streamed Request; the host route still performs ordinary JSON buffering.
+      ...{ duplex: 'half' },
+    })
+    const storing = fixture.call('ownerCredential', request)
+    const controller = await body.promise
+    let closed = false
+    releases.push(() => { if (!closed) controller.close() })
+    await switchRelay(fixture.ctx)
+    controller.enqueue(new TextEncoder().encode(JSON.stringify({ credential: credential('owner-a') })))
+    controller.close()
+    closed = true
+    const stored = await storing
+    expect(stored.status).toBe(403)
+    expect(await stored.json()).toEqual({ error: 'owner-login-mismatch' })
+    expect(existsSync(fixture.ownerCredentialFile)).toBe(false)
+  })
+
+  it('does not inherit a changed Relay when a committed credential waits for its probe', async () => {
+    const probing = deferred<undefined>()
+    const probed = deferred<Response>()
+    releases.push(() => { probed.resolve(response({ supported: true })) })
+    let blockProbe = false
+    const calls = relayFetch((call) => {
+      if (blockProbe && call.method === 'GET' && call.url.pathname.endsWith('/owner-credential')) {
+        probing.resolve(undefined)
+        return probed.promise
+      }
+      return response({ supported: true, claimed: true })
+    })
+    const fixture = await host({ shares: [{ shareId: 'share-a', relay: RELAY_A }, { shareId: 'share-b', relay: RELAY_B }] })
+    await fixture.ctx.liveshareShares.identity({})
+    blockProbe = true
+    const storing = fixture.call('ownerCredential', { credential: credential('owner-a') })
+    await probing.promise
+    await switchRelay(fixture.ctx)
+    probed.resolve(response({ supported: true }))
+    const stored = await storing
+    expect(stored.status).toBe(200)
+    expect(await stored.json()).toMatchObject({ state: 'verified', relay: RELAY_A, subjectId: 'owner-a', claim: { claimed: 1, skipped: 0 } })
+    expect(JSON.parse(readFileSync(fixture.ownerCredentialFile, 'utf8'))).toMatchObject({ relay: RELAY_A, credential: credential('owner-a') })
+    const claims = calls.filter(call => call.url.pathname.endsWith('/claim'))
+    expect(claims.map(call => call.url.href)).toEqual([`${RELAY_A}/__liveshare/share/claim?shareId=share-a`])
+    expect(claims[0]?.headers.get('x-liveshare-owner-credential')).toBe(credential('owner-a'))
+  })
+
+  it('returns the committed credential identity even if another credential commits while its claim waits', async () => {
+    const claiming = deferred<undefined>()
+    const claimed = deferred<Response>()
+    releases.push(() => { claimed.resolve(response({ claimed: true })) })
+    const calls = relayFetch((call) => {
+      if (call.url.pathname.endsWith('/claim') && call.headers.get('x-liveshare-owner-credential') === credential('first')) {
+        claiming.resolve(undefined)
+        return claimed.promise
+      }
+      return response({ supported: true, claimed: true })
+    })
+    const fixture = await host({ shares: [{ shareId: 'share-a', relay: RELAY_A }, { shareId: 'share-a2', relay: RELAY_A }] })
+    const first = fixture.call('ownerCredential', { credential: credential('first') })
+    await claiming.promise
+    const second = await fixture.call('ownerCredential', { credential: credential('second') })
+    expect(await second.json()).toMatchObject({ subjectId: 'second' })
+    claimed.resolve(response({ claimed: true }))
+    expect(await (await first).json()).toMatchObject({ state: 'verified', relay: RELAY_A, subjectId: 'first' })
+    expect(JSON.parse(readFileSync(fixture.ownerCredentialFile, 'utf8'))).toMatchObject({ credential: credential('second') })
+    const firstClaims = calls.filter(call => call.url.pathname.endsWith('/claim')
+      && call.headers.get('x-liveshare-owner-credential') === credential('first'))
+    expect(firstClaims.map(call => call.url.searchParams.get('shareId'))).toEqual(['share-a', 'share-a2'])
+  })
+
+  it('attributes a startup claim to the Relay it asked even if the owner switches during its response', async () => {
+    const claiming = deferred<undefined>()
+    const claimed = deferred<Response>()
+    releases.push(() => { claimed.resolve(response({ claimed: true })) })
+    relayFetch((call) => {
+      if (call.url.pathname.endsWith('/claim')) { claiming.resolve(undefined); return claimed.promise }
+      return response({ supported: true })
+    })
+    const fixture = await host({ stored: { relay: RELAY_A, credential: credential('owner-a') }, shares: [{ shareId: 'share-a', relay: RELAY_A }] })
+    await claiming.promise
+    await switchRelay(fixture.ctx)
+    claimed.resolve(response({ claimed: true }))
+    // The identity route waits on its own probe, after the released claim's queued continuation.
+    const identityB = await fixture.ctx.liveshareShares.identity({ relay: RELAY_B })
+    expect(identityB).not.toHaveProperty('claim')
+    const identityA = await fixture.ctx.liveshareShares.identity({ relay: RELAY_A })
+    expect(identityA).toMatchObject({ claim: { claimed: 1, skipped: 0 } })
+  })
+
+  it('refuses a login start whose support probe finishes after its selected Relay changes', async () => {
+    const probing = deferred<undefined>()
+    const probed = deferred<Response>()
+    releases.push(() => { probed.resolve(response({ supported: true })) })
+    relayFetch(() => { probing.resolve(undefined); return probed.promise })
+    const fixture = await host()
+    const starting = fixture.call('ownerLoginStart', {})
+    await probing.promise
+    await switchRelay(fixture.ctx)
+    probed.resolve(response({ supported: true }))
+    const started = await starting
+    expect(started.status).toBe(403)
+    expect(await started.json()).toEqual({ error: 'owner-login-mismatch' })
+  })
+
+  it('keeps an in-flight share registration, persisted Relay, link and reconnect on the captured address', async () => {
+    relayFetch(() => response({ supported: true, requests: [] }))
+    const fixture = await host({ stored: { relay: RELAY_A, credential: credential('owner-a') } })
+    const registering = deferred<Extract<TunnelWorkerInput, { type: 'add-share' }>>()
+    worker.sent = (command) => { if (command.type === 'add-share') registering.resolve(command) }
+    const creating = fixture.ctx.liveshareShares.create({ sessionId: 'session', sessionTitle: 'Session' })
+    const registration = await registering.promise
+    expect(registration.share.relay).toBe(RELAY_A)
+    expect(registration.share.ownerCredential).toBe(credential('owner-a'))
+    await switchRelay(fixture.ctx)
+    const registrationToken = randomUUID() as TunnelRegistrationToken
+    worker.listener?.({ type: 'share-connected', registrationToken, shareId: registration.share.shareId })
+    const created = await creating
+    const expectedLink = `${RELAY_A}/?shareId=${registration.share.shareId}`
+    expect(created).toMatchObject({ link: expectedLink })
+    expect(JSON.parse(readFileSync(fixture.ownerStateFile, 'utf8'))).toMatchObject({ relayUrl: RELAY_B,
+      shares: [{ relay: RELAY_A, shareId: registration.share.shareId }] })
+    expect(await fixture.ctx.liveshareShares.list()).toMatchObject({ shares: [{ link: expectedLink }] })
+    // A mode update uses the same registration builder as a host restart, without creating a second host.
+    await expect(fixture.ctx.liveshareShares.updatePermissions({
+      shareId: registration.share.shareId, sessionMode: 'view',
+    })).resolves.toMatchObject({ sessionMode: 'view' })
+    const reconnect = worker.commands.filter(command => command.type === 'add-share').at(-1)
+    expect(reconnect).toMatchObject({ share: { relay: RELAY_A, ownerCredential: credential('owner-a'), ownerDisplayName: 'owner-a' } })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/relay-url.spec.ts b/packages/experimental/liveshare/tests/relay-url.spec.ts
new file mode 100644
index 0000000000..ea88a890f0
--- /dev/null
+++ b/packages/experimental/liveshare/tests/relay-url.spec.ts
@@ -0,0 +1,18 @@
+import { describe, expect, it } from 'vitest'
+import { normalizeRelayUrl } from '../src/host/relay-url.ts'
+
+describe('normalizeRelayUrl', () => {
+  it('keeps the path prefix and removes query, hash, and trailing slashes', () => {
+    expect(normalizeRelayUrl('https://relay.example.com/team/liveshare/?a=1#x'))
+      .toBe('https://relay.example.com/team/liveshare')
+    expect(normalizeRelayUrl('http://127.0.0.1:37900///'))
+      .toBe('http://127.0.0.1:37900')
+  })
+
+  it('rejects invalid Relay bases fail-loud', () => {
+    expect(() => normalizeRelayUrl('')).toThrow(/must not be empty/u)
+    expect(() => normalizeRelayUrl('/relative')).toThrow(/absolute URL/u)
+    expect(() => normalizeRelayUrl('ftp://relay.example.com')).toThrow(/http or https/u)
+    expect(() => normalizeRelayUrl('https://user:pass@relay.example.com')).toThrow(/credentials/u)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/share-action.client.spec.tsx b/packages/experimental/liveshare/tests/share-action.client.spec.tsx
new file mode 100644
index 0000000000..3d11189924
--- /dev/null
+++ b/packages/experimental/liveshare/tests/share-action.client.spec.tsx
@@ -0,0 +1,183 @@
+// @vitest-environment jsdom
+/**
+ * The Session-header Share action: the button a local owner opens, the dialog it opens, and the live
+ * relay address that dialog starts from.
+ */
+
+import { Context } from '@deepseek-ai/cordis'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import { cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
+import type { ReactNode } from 'react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { LiveshareShareAction } from '../src/client/ShareAction.tsx'
+import { en, NS, zh } from '../src/client/locales.ts'
+import type { OwnerShares } from '../src/client/owner-shares.ts'
+import { accepted, ownerSharesDouble, refused } from './owner-shares-double.client.ts'
+import { rememberManagedShare, setManagedShareOpener } from '../src/client/share-navigation.ts'
+
+const SESSION = 'owner-session' as SessionId
+
+// The action reads its copy through the locale seat the browser composition provides.
+const locale = new LocaleRuntime(new Context())
+locale.register(NS, { zh, en })
+locale.setLocale('zh')
+const t = locale.bind(NS)
+
+afterEach(cleanup)
+
+/** One Session list carrying the Session the action belongs to, or none at all. */
+function list(displayTitle?: string): { byId: Record<string, unknown> } {
+  return displayTitle === undefined ? { byId: {} } : { byId: { [SESSION]: { displayTitle } } }
+}
+
+/**
+ * Render the header action over one scripted Remote namespace.
+ * @param shares - Owner share management the action addresses.
+ * @param rows - The Session list the action reads its title from.
+ * @returns The rendered container.
+ */
+function renderAction(shares: OwnerShares, rows: { byId: Record<string, unknown> } = list('Review the migration')) {
+  const View = LiveshareShareAction as (props: Record<string, unknown>) => ReactNode
+  return render(<View
+    sessionId={SESSION} shares={shares} t={t}
+    useSessions={(selector: (value: unknown) => unknown) => selector(rows)}
+  />)
+}
+
+describe('Session header Share action', () => {
+  it('opens the share dialog and asks the Host for the relay address in force', async () => {
+    const { shares, calls } = ownerSharesDouble()
+    renderAction(shares)
+
+    fireEvent.click(screen.getByRole('button', { name: zh['header.action'] }))
+
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+    // The dialog is told which Session it publishes, including a Session the list does not name.
+    expect(calls.map(call => call.method)).toContain('relay')
+  })
+
+  it('returns to the share dialog when the manager opens this same Session', async () => {
+    const { shares } = ownerSharesDouble({
+      list: async () => accepted({ shares: [{
+        shareId: 'share', sessionId: SESSION, sessionTitle: 'Review the migration',
+        link: 'https://relay.test/?shareId=share', createdAt: '2026-09-05T00:00:00Z', online: true,
+      }] as never }),
+    })
+    renderAction(shares)
+    fireEvent.click(screen.getByRole('button', { name: zh['header.action'] }))
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+    fireEvent.click(screen.getByText(zh['dialog.manage']))
+    const manage = await screen.findByRole('button', { name: zh['manage.open'] })
+    fireEvent.click(manage)
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+    expect(screen.queryByText(zh['manage.title'])).toBeNull()
+  })
+
+  it('asks workspace navigation to open another Session selected in the manager', async () => {
+    const open = vi.fn()
+    setManagedShareOpener(open)
+    const { shares } = ownerSharesDouble({
+      list: async () => accepted({ shares: [{
+        shareId: 'other', sessionId: 'other-session', sessionTitle: 'Other session',
+        link: 'https://relay.test/?shareId=other', createdAt: '2026-09-05T00:00:00Z', online: true,
+      }] as never }),
+    })
+    renderAction(shares)
+    fireEvent.click(screen.getByRole('button', { name: zh['header.action'] }))
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+    fireEvent.click(screen.getByText(zh['dialog.manage']))
+    const manage = await screen.findByRole('button', { name: zh['manage.open'] })
+    fireEvent.click(manage)
+    expect(open).toHaveBeenCalledWith('other-session')
+    await waitFor(() => { expect(screen.getByText('Other session')).toBeTruthy() })
+  })
+
+  it('opens the share dialog when the manager left a request for this Session', async () => {
+    rememberManagedShare(SESSION)
+    const { shares } = ownerSharesDouble()
+    renderAction(shares)
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+  })
+
+  it('opens the dialog for a Session the list has not published, titled by its id', async () => {
+    const { shares } = ownerSharesDouble()
+    renderAction(shares, list())
+
+    fireEvent.click(screen.getByRole('button', { name: zh['header.action'] }))
+
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+  })
+
+  it('starts from an empty address when the Host has none saved', async () => {
+    const { shares } = ownerSharesDouble({ relay: async () => accepted({}) })
+    renderAction(shares)
+
+    fireEvent.click(screen.getByRole('button', { name: zh['header.action'] }))
+
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+    expect(screen.getByLabelText(zh['dialog.relay'])).toHaveProperty('value', '')
+    expect(screen.getByText(zh['dialog.addressHint'])).toBeTruthy()
+  })
+
+  it('titles the dialog by the Session id when its listed row has no display title', async () => {
+    const { shares } = ownerSharesDouble()
+    renderAction(shares, { byId: { [SESSION]: {} } })
+
+    fireEvent.click(screen.getByRole('button', { name: zh['header.action'] }))
+
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+  })
+
+  it('opens the dialog when the Host fails to report its relay address', async () => {
+    const { shares } = ownerSharesDouble({ relay: async () => { throw new Error('relay unavailable') } })
+    renderAction(shares)
+
+    fireEvent.click(screen.getByRole('button', { name: zh['header.action'] }))
+
+    // Typing the address is still possible: a failed read is not a reason to keep the dialog closed.
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+    expect(screen.getByText(zh['dialog.create'])).toBeTruthy()
+  })
+
+  it('opens the dialog when the Host answers that it could not read the relay address', async () => {
+    const { shares } = ownerSharesDouble({
+      relay: async () => refused('liveshareShares/invalid-relay-url', {}),
+    })
+    renderAction(shares)
+
+    fireEvent.click(screen.getByRole('button', { name: zh['header.action'] }))
+
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+    expect(screen.getByText(zh['dialog.create'])).toBeTruthy()
+  })
+
+  it('moves from the share dialog to share management, which closes back to the header', async () => {
+    const { shares } = ownerSharesDouble()
+    renderAction(shares)
+
+    fireEvent.click(screen.getByRole('button', { name: zh['header.action'] }))
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+    fireEvent.click(screen.getByText(zh['dialog.manage']))
+
+    // The management surface lists this host's shares; the dialog it replaced is gone.
+    await waitFor(() => { expect(screen.getByText(zh['manage.title'])).toBeTruthy() })
+    expect(screen.queryByText(zh['dialog.title'])).toBeNull()
+
+    fireEvent.click(screen.getAllByRole('button', { name: zh['manage.done'] })[0] as HTMLElement)
+    await waitFor(() => { expect(screen.queryByText(zh['manage.title'])).toBeNull() })
+  })
+
+  it('closes the share dialog without publishing anything', async () => {
+    const { shares, calls } = ownerSharesDouble()
+    renderAction(shares)
+
+    fireEvent.click(screen.getByRole('button', { name: zh['header.action'] }))
+    await waitFor(() => { expect(screen.getByText(zh['dialog.title'])).toBeTruthy() })
+    // A fresh dialog states no link yet, so its close control is the cancel affordance.
+    fireEvent.click(screen.getAllByRole('button', { name: zh['dialog.cancel'] })[0] as HTMLElement)
+
+    await waitFor(() => { expect(screen.queryByText(zh['dialog.title'])).toBeNull() })
+    expect(calls.map(call => call.method)).not.toContain('create')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/share-capabilities.client.spec.tsx b/packages/experimental/liveshare/tests/share-capabilities.client.spec.tsx
new file mode 100644
index 0000000000..abaa24a1de
--- /dev/null
+++ b/packages/experimental/liveshare/tests/share-capabilities.client.spec.tsx
@@ -0,0 +1,560 @@
+// @vitest-environment jsdom
+/** The owner's share-permission section: one endpoint tier, the share's own tier and fork switch, and one save for all three. */
+
+import { act, cleanup, fireEvent, render, screen, within } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type {} from '../src/client/index.ts'
+import { LiveshareShareDialog, type LiveshareShareDialogProps } from '../src/client/ShareDialog.tsx'
+import { ShareCapabilitiesPicker } from '../src/client/ShareCapabilitiesPicker.tsx'
+import { en } from '../src/client/locales.ts'
+import css from '../src/client/ShareDialog.module.css'
+import type { ShareCapabilityGroup } from '../src/share-api-types.ts'
+import {
+  accepted, DOUBLE_RELAY, ownerSharesDouble, refused, requestOf, type OwnerSharesCall,
+} from './owner-shares-double.client.ts'
+
+afterEach(() => {
+  cleanup()
+  vi.unstubAllGlobals()
+})
+
+const translate: LiveshareShareDialogProps['t'] = (key, params) => {
+  let result: string = (en as Readonly<Record<string, string>>)[key] ?? key
+  for (const [name, value] of Object.entries(params ?? {})) result = result.replace(`{${name}}`, String(value))
+  return result
+}
+
+const READABLE = 'mekGit/getGraph'
+const SECOND_READABLE = 'mekGit/listBranches'
+const WRITABLE = 'mekGit/commit'
+const SEARCH_READABLE = 'mekSearch/query'
+
+/** Read-only offers, like the Git plugin: no plugin declares a writable endpoint. */
+const READ_ONLY_OFFERED = [
+  { plugin: 'mekGit', readable: [READABLE, SECOND_READABLE], writable: [] },
+  { plugin: 'mekSearch', readable: [SEARCH_READABLE], writable: [] },
+]
+/** Offers with one writable endpoint, so the wider tier is available. */
+const WRITABLE_OFFERED = [
+  { plugin: 'mekGit', readable: [READABLE, SECOND_READABLE], writable: [WRITABLE] },
+  { plugin: 'mekSearch', readable: [SEARCH_READABLE], writable: [] },
+]
+/** Offers of writable endpoints only, so the read tier has nothing to expose. */
+const WRITE_ONLY_OFFERED = [{ plugin: 'mekGit', readable: [], writable: [WRITABLE] }]
+/** One plugin with more endpoints than fit on screen, which the scrolling body holds. */
+const LONG_OFFERED = [{
+  plugin: 'mekGit',
+  readable: Array.from({ length: 26 }, (_value, index) => `mekGit/op${String(index).padStart(2, '0')}`),
+  writable: [],
+}]
+/** What the read tier expands to: every readable endpoint, no writable one. */
+const READ_TIER = [
+  { plugin: 'mekGit', readable: [READABLE, SECOND_READABLE], writable: [] },
+  { plugin: 'mekSearch', readable: [SEARCH_READABLE], writable: [] },
+]
+/** What the write tier expands to: every readable endpoint plus every writable one. */
+const WRITE_TIER = [
+  { plugin: 'mekGit', readable: [READABLE, SECOND_READABLE], writable: [WRITABLE] },
+  { plugin: 'mekSearch', readable: [SEARCH_READABLE], writable: [] },
+]
+/** What the read tier expands to for the offer that carries 26 readable endpoints. */
+const LONG_READ_TIER = [{ plugin: 'mekGit', readable: LONG_OFFERED[0]!.readable, writable: [] }]
+
+/** The record one case starts from, as the fake host has it stored. */
+interface StoredShare {
+  sessionMode?: 'view' | 'write'
+  allowsFork: boolean
+  viewerCapabilities: readonly ShareCapabilityGroup[]
+}
+
+interface CapabilityResponses {
+  /** What the `capabilities` method offers; the default is a host that offers nothing. */
+  readonly offered?: readonly ShareCapabilityGroup[]
+  /** Grant the dialog a share session-scoped to it (the default), or none at all. */
+  readonly share?: 'existing' | 'none'
+  /** The stored record the fake host serves and updates. */
+  readonly stored?: Partial<StoredShare>
+  /** Whether the fake host refuses a permission write. */
+  readonly permissionRefused?: boolean
+  /** Whether the fake host refuses an endpoint write. */
+  readonly capabilityRefused?: boolean
+  /** Whether the fake host transport throws while writing endpoints. */
+  readonly capabilityThrows?: boolean
+}
+
+interface Harness {
+  /** Every Remote call the dialog made. */
+  readonly calls: readonly OwnerSharesCall[]
+  /** The fake host's record, which the writes above update. */
+  readonly stored: StoredShare
+  /** How many times the dialog read the host's share list, including a confirming re-read. */
+  readonly shareReads: () => number
+}
+
+/** The permission write the dialog sent, or undefined when it sent none. */
+function permissionWrite(harness: Harness) {
+  return requestOf(harness.calls, 'updatePermissions')
+}
+
+/** The endpoint write the dialog sent, or undefined when it sent none. */
+function capabilityWrite(harness: Harness) {
+  return requestOf(harness.calls, 'setCapabilities')
+}
+
+/** The management writes the dialog sent, in order. */
+function writeMethods(harness: Harness): readonly string[] {
+  return harness.calls
+    .map(call => call.method)
+    .filter(method => method === 'updatePermissions' || method === 'setCapabilities')
+}
+
+async function showDialog(options: CapabilityResponses = {}, onClose: () => void = () => {}): Promise<Harness> {
+  const stored: StoredShare = {
+    allowsFork: false,
+    viewerCapabilities: [],
+    ...options.stored,
+    ...(options.stored?.sessionMode === undefined ? { sessionMode: 'view' } : {}),
+  }
+  const link = `${DOUBLE_RELAY}/?shareId=existing`
+  let shareReads = 0
+  // Read afresh on every call: a write through the fake host must be visible to the confirming read.
+  const listed = () => ({
+    shareId: 'existing', sessionId: 'session', sessionTitle: 'Capability session', link,
+    createdAt: '2026-09-05T00:00:00Z', online: true,
+    access: { mode: 'open' as const, selected: [], deploymentAllowedSubjectIds: [],
+      shareAllowedSubjectIds: [], broadenedByDeploymentSubjects: false, identityKeyAcl: true as const },
+    ...stored,
+  })
+  const host = ownerSharesDouble({
+    list: async () => {
+      shareReads += 1
+      return accepted({ shares: (options.share === 'none' ? [] : [listed()]) as never })
+    },
+    capabilities: async () => accepted({ capabilities: options.offered ?? [] }),
+    updatePermissions: async (request) => {
+      if (options.permissionRefused === true) return refused('gateway/internal', {})
+      if (request.sessionMode !== undefined) stored.sessionMode = request.sessionMode
+      if (request.allowsFork !== undefined) stored.allowsFork = request.allowsFork
+      return accepted({
+        shareId: 'existing',
+        sessionMode: request.sessionMode ?? stored.sessionMode ?? 'view',
+        allowsFork: request.allowsFork ?? stored.allowsFork,
+      })
+    },
+    setCapabilities: async (request) => {
+      if (options.capabilityThrows === true) throw new Error('host lost')
+      if (options.capabilityRefused === true) return refused('gateway/internal', {})
+      stored.viewerCapabilities = request.capabilities ?? []
+      return accepted({ shareId: 'existing', viewerCapabilities: stored.viewerCapabilities })
+    },
+    relay: async () => accepted({ override: link, effective: link }),
+    identity: async () => accepted({ state: 'verified', relay: link, displayName: 'Owner' }),
+    testRelay: async () => accepted({ ok: true, httpReachable: true, blocking: false }),
+    testPublish: async () => accepted({ ok: true, blocking: false }),
+  })
+  await act(async () => {
+    render(<LiveshareShareDialog
+      sessionId={'session' as SessionId}
+      sessionTitle="Capability session"
+      defaultRelay={link}
+      shares={host.shares}
+      onClose={onClose}
+      t={translate}
+    />)
+  })
+  return { calls: host.calls, stored, shareReads: () => shareReads }
+}
+
+/** The tier control's three segments, in display order. */
+/** The endpoint-tier control, which shares its tab role with the session-permission control. */
+function tierControl(): HTMLElement {
+  return screen.getByRole('tablist', { name: 'Plugin endpoints' })
+}
+
+/** One segment of that control. */
+function tierTab(name: 'Unavailable' | 'Read-only' | 'Writable'): HTMLElement {
+  return within(tierControl()).getByRole('tab', { name })
+}
+
+/** The tier the control shows as selected. */
+function selectedTier(): string | null {
+  return within(tierControl()).getAllByRole('tab')
+    .find(tab => tab.getAttribute('aria-selected') === 'true')?.textContent ?? null
+}
+
+/** The dialog's own footer, which sits outside the scrolling body. */
+function panelFooter(): HTMLElement {
+  const footer = document.querySelector<HTMLElement>(`.${css.panelFooter}`)
+  if (footer === null) throw new Error('the dialog has no panel footer')
+  return footer
+}
+
+/** The scrolling body the fields live in. */
+function dialogBody(): HTMLElement {
+  const body = document.querySelector<HTMLElement>(`.${css.body}`)
+  if (body === null) throw new Error('the dialog has no body')
+  return body
+}
+
+/** Save the permission section through the dialog's one save action. */
+async function save(): Promise<void> {
+  await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Save changes' })) })
+}
+
+/**
+ * Drive the dialog's own polling read instead of waiting for its interval.
+ * @returns A callback that runs every registered poll once.
+ */
+function interceptPolling(): () => void {
+  const callbacks: (() => void)[] = []
+  vi.stubGlobal('setInterval', (callback: () => void) => {
+    callbacks.push(callback)
+    return 0
+  })
+  return () => { for (const callback of callbacks) callback() }
+}
+
+/** Whether the save control is disabled right now. */
+function saveDisabled(): boolean {
+  const control = screen.getByRole('button', { name: 'Save changes' })
+  if (!(control instanceof HTMLButtonElement)) throw new TypeError('the save control is not a button')
+  return control.disabled
+}
+
+/** The permission the segmented control currently selects. */
+function selectedMode(): 'view' | 'write' | undefined {
+  const tablist = screen.getByRole('tablist', { name: 'Session permission' })
+  const selected = tablist.querySelector<HTMLElement>('[aria-selected="true"]')
+  if (selected?.textContent === 'Read only') return 'view'
+  if (selected?.textContent === 'Workspace write') return 'write'
+  return undefined
+}
+
+/** One permission segment for the share on hand. */
+function modeTab(name: 'Read only' | 'Workspace write'): HTMLElement {
+  return screen.getByRole('tab', { name })
+}
+
+/** The fork switch for the share on hand. */
+function forkSwitch(): HTMLElement {
+  return screen.getByRole('switch', { name: en['dialog.allowsFork'] })
+}
+
+/** Whether a switch primitive is on. */
+function switchOn(element: HTMLElement): boolean {
+  return element.getAttribute('aria-checked') === 'true'
+}
+
+describe('owner share permission section', () => {
+  it('edits the same permission fields before and after a share exists', async () => {
+    await showDialog({ offered: READ_ONLY_OFFERED, share: 'none' })
+    // The create form owns the same fields as the stored-share editor; only the save action differs.
+    expect(screen.getByText('Share permissions')).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Create share' })).toBeDefined()
+    expect(screen.queryByRole('button', { name: 'Save changes' })).toBeNull()
+    // The retired Advanced disclosure is gone rather than left as an empty shell.
+    expect(screen.queryByText('Advanced')).toBeNull()
+  })
+
+  it('configures plugin endpoints before the share exists and stores them after create', async () => {
+    const harness = await showDialog({ offered: READ_ONLY_OFFERED, share: 'none' })
+    // The create form owns the same share-wide tier control the edit panel owns.
+    expect(tierControl()).toBeDefined()
+    await act(async () => { fireEvent.click(tierTab('Read-only')) })
+    const create = screen.getByRole('button', { name: 'Create share' })
+    await vi.waitFor(() => { expect(create).toHaveProperty('disabled', false) })
+    await act(async () => { fireEvent.click(create) })
+    // Creation is one host write; the endpoint tier is the second, addressed to the created share.
+    expect(requestOf(harness.calls, 'create')).toBeDefined()
+    expect(capabilityWrite(harness)).toEqual({ shareId: 'created', capabilities: READ_TIER })
+  })
+
+  it('creates without an endpoint write when the default tier is kept', async () => {
+    const harness = await showDialog({ offered: READ_ONLY_OFFERED, share: 'none' })
+    const create = screen.getByRole('button', { name: 'Create share' })
+    await vi.waitFor(() => { expect(create).toHaveProperty('disabled', false) })
+    await act(async () => { fireEvent.click(create) })
+    expect(requestOf(harness.calls, 'create')).toBeDefined()
+    expect(capabilityWrite(harness)).toBeUndefined()
+  })
+
+  it('states a created share whose endpoint write failed', async () => {
+    const harness = await showDialog({ offered: READ_ONLY_OFFERED, share: 'none', capabilityRefused: true })
+    await act(async () => { fireEvent.click(tierTab('Read-only')) })
+    const create = screen.getByRole('button', { name: 'Create share' })
+    await vi.waitFor(() => { expect(create).toHaveProperty('disabled', false) })
+    await act(async () => { fireEvent.click(create) })
+    expect(await screen.findByRole('alert')).toHaveProperty('textContent', en['dialog.capabilities.createFailed'])
+    // The share itself exists, and the write that failed is the endpoint write after it.
+    expect(requestOf(harness.calls, 'create')).toBeDefined()
+    expect(capabilityWrite(harness)).toEqual({ shareId: 'created', capabilities: READ_TIER })
+  })
+
+  it('states a created share whose endpoint write threw', async () => {
+    const harness = await showDialog({ offered: READ_ONLY_OFFERED, share: 'none', capabilityThrows: true })
+    await act(async () => { fireEvent.click(tierTab('Read-only')) })
+    const create = screen.getByRole('button', { name: 'Create share' })
+    await vi.waitFor(() => { expect(create).toHaveProperty('disabled', false) })
+    await act(async () => { fireEvent.click(create) })
+    expect(await screen.findByRole('alert')).toHaveProperty('textContent', en['dialog.capabilities.createFailed'])
+    expect(requestOf(harness.calls, 'create')).toBeDefined()
+  })
+
+  it('hides the endpoint control before the host offers one', async () => {
+    await showDialog({ share: 'none' })
+    expect(screen.queryByRole('tablist', { name: 'Plugin endpoints' })).toBeNull()
+    expect(screen.getByRole('switch', { name: 'Plugin endpoints' })).toHaveProperty('disabled', true)
+    expect(screen.getByText(en['dialog.capabilities.empty'])).toBeDefined()
+  })
+
+  it('opens plugin endpoints through one switch and closes them again', async () => {
+    await showDialog({ offered: READ_ONLY_OFFERED })
+    const pluginSwitch = screen.getByRole('switch', { name: 'Plugin endpoints' })
+    expect(pluginSwitch).toHaveProperty('disabled', false)
+    expect(switchOn(pluginSwitch)).toBe(false)
+    await act(async () => { fireEvent.click(pluginSwitch) })
+    expect(switchOn(screen.getByRole('switch', { name: 'Plugin endpoints' }))).toBe(true)
+    expect(selectedTier()).toBe('Read-only')
+    expect(screen.getByText('Read-only · 3 endpoints')).toBeDefined()
+    await act(async () => { fireEvent.click(screen.getByRole('switch', { name: 'Plugin endpoints' })) })
+    expect(switchOn(screen.getByRole('switch', { name: 'Plugin endpoints' }))).toBe(false)
+    expect(selectedTier()).toBe('Unavailable')
+  })
+
+  it('is one share-wide endpoint tier, not a box per plugin endpoint', async () => {
+    await showDialog({ offered: READ_ONLY_OFFERED })
+    expect(screen.getByText('Share permissions')).toBeDefined()
+    // One tier for the whole share, so no plugin name and no endpoint name is presented at all.
+    expect(screen.queryByText('mekGit')).toBeNull()
+    expect(screen.queryByText(READABLE)).toBeNull()
+    expect(screen.queryByLabelText(`mekGit: ${READABLE}`)).toBeNull()
+  })
+
+  it('states the share permission and fork switch the host reported', async () => {
+    await showDialog({ offered: READ_ONLY_OFFERED, stored: { sessionMode: 'write', allowsFork: true, viewerCapabilities: [] } })
+    expect(selectedMode()).toBe('write')
+    expect(switchOn(forkSwitch())).toBe(true)
+  })
+
+  it('offers no endpoint tier and nothing to save when no plugin declares an endpoint', async () => {
+    await showDialog({ offered: [] })
+    expect(screen.getByText('Share permissions')).toBeDefined()
+    expect(screen.queryByRole('tablist', { name: 'Plugin endpoints' })).toBeNull()
+    expect(screen.getByRole('button', { name: 'Save changes' })).toHaveProperty('disabled', true)
+    // Nothing is exposed and nothing was picked, so the dialog warns about no unsaved change.
+    expect(screen.queryByText('Unsaved changes.')).toBeNull()
+  })
+
+  it('starts at the default endpoint tier and saves nothing until something changes', async () => {
+    const harness = await showDialog({ offered: READ_ONLY_OFFERED })
+    expect(selectedTier()).toBe('Unavailable')
+    expect(screen.getByText('Not open to viewers')).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Save changes' })).toHaveProperty('disabled', true)
+    expect(writeMethods(harness)).toEqual([])
+  })
+
+  it('submits every plugin readable endpoint under the read-only tier, with the share permission', async () => {
+    const harness = await showDialog({ offered: READ_ONLY_OFFERED })
+    await act(async () => { fireEvent.click(tierTab('Read-only')) })
+    expect(selectedTier()).toBe('Read-only')
+    expect(screen.getByText('Read-only · 3 endpoints')).toBeDefined()
+    expect(screen.getByText('Unsaved changes.')).toBeDefined()
+    await save()
+    expect(permissionWrite(harness)).toEqual({
+      shareId: 'existing', sessionMode: 'view', allowsFork: false,
+    })
+    expect(capabilityWrite(harness)).toEqual({
+      shareId: 'existing', capabilities: READ_TIER,
+    })
+    expect(screen.getByText('Share permissions and plugin endpoints saved.')).toBeDefined()
+    expect(screen.queryByText('Unsaved changes.')).toBeNull()
+  })
+
+  it('submits every readable and writable endpoint under the writable tier', async () => {
+    const harness = await showDialog({ offered: WRITABLE_OFFERED })
+    await act(async () => { fireEvent.click(tierTab('Writable')) })
+    expect(selectedTier()).toBe('Writable')
+    expect(screen.getByText('Writable · 3 read-only + 1 writable')).toBeDefined()
+    await save()
+    expect(capabilityWrite(harness)).toEqual({
+      shareId: 'existing', capabilities: WRITE_TIER,
+    })
+  })
+
+  it('keeps the writable tier unavailable when no plugin declares a writable endpoint', async () => {
+    await showDialog({ offered: READ_ONLY_OFFERED })
+    expect(tierTab('Writable')).toHaveProperty('disabled', true)
+    expect(screen.getByText('No plugin offers a writable endpoint, so Writable cannot be chosen.')).toBeDefined()
+    // The caveat about writable endpoints is stated only where one exists to open.
+    expect(screen.queryByText(/destructive inside a writable share/)).toBeNull()
+  })
+
+  it('keeps the read-only tier unavailable when no plugin declares a readable endpoint', async () => {
+    const harness = await showDialog({ offered: WRITE_ONLY_OFFERED })
+    // The master switch can only enable the tier the offer actually fills.
+    await act(async () => { fireEvent.click(screen.getByRole('switch', { name: 'Plugin endpoints' })) })
+    expect(selectedTier()).toBe('Writable')
+    expect(tierTab('Read-only')).toHaveProperty('disabled', true)
+    expect(tierTab('Writable')).toHaveProperty('disabled', false)
+    expect(screen.getByText('No plugin offers a read-only endpoint, so Read-only cannot be chosen.')).toBeDefined()
+    await act(async () => { fireEvent.click(tierTab('Writable')) })
+    await save()
+    expect(capabilityWrite(harness)).toEqual({
+      shareId: 'existing',
+      capabilities: [{ plugin: 'mekGit', readable: [], writable: [WRITABLE] }],
+    })
+  })
+
+  it('reads a stored record of exactly every readable endpoint as the read-only tier', async () => {
+    await showDialog({ offered: READ_ONLY_OFFERED, stored: { allowsFork: false, viewerCapabilities: READ_TIER } })
+    expect(selectedTier()).toBe('Read-only')
+    expect(screen.getByText('Read-only · 3 endpoints')).toBeDefined()
+    expect(screen.queryByText('Unsaved changes.')).toBeNull()
+  })
+
+  it('reads a stored record of every readable and writable endpoint as the writable tier', async () => {
+    await showDialog({ offered: WRITABLE_OFFERED, stored: { allowsFork: false, viewerCapabilities: WRITE_TIER } })
+    expect(selectedTier()).toBe('Writable')
+    expect(screen.getByText('Writable · 3 read-only + 1 writable')).toBeDefined()
+    expect(screen.queryByText('Unsaved changes.')).toBeNull()
+  })
+
+  it('shows a stored record that is no whole tier as the default and says saving replaces it', async () => {
+    await showDialog({
+      offered: READ_ONLY_OFFERED,
+      stored: { allowsFork: false, viewerCapabilities: [{ plugin: 'mekGit', readable: [READABLE], writable: [] }] },
+    })
+    expect(selectedTier()).toBe('Unavailable')
+    expect(screen.getByText('The saved selection is not one whole tier; saving again replaces it with the tier you pick.')).toBeDefined()
+  })
+
+  it('edits the share permission, the fork switch, and the endpoints in one save', async () => {
+    const harness = await showDialog({ offered: WRITABLE_OFFERED })
+    await act(async () => { fireEvent.click(modeTab('Workspace write')) })
+    await act(async () => { fireEvent.click(forkSwitch()) })
+    await act(async () => { fireEvent.click(tierTab('Writable')) })
+    await save()
+
+    expect(permissionWrite(harness)).toEqual({
+      shareId: 'existing', sessionMode: 'write', allowsFork: true,
+    })
+    expect(capabilityWrite(harness)).toEqual({
+      shareId: 'existing', capabilities: WRITE_TIER,
+    })
+    // The fields read the host's record back, which is what the writes stored.
+    expect(harness.stored.sessionMode).toBe('write')
+    expect(harness.stored.allowsFork).toBe(true)
+    expect(selectedMode()).toBe('write')
+    expect(switchOn(forkSwitch())).toBe(true)
+    expect(selectedTier()).toBe('Writable')
+    expect(saveDisabled()).toBe(true)
+  })
+
+  it('keeps the save reachable outside the scrolling list, however many endpoints are offered', async () => {
+    const harness = await showDialog({ offered: LONG_OFFERED })
+    const saveButton = screen.getByRole('button', { name: 'Save changes' })
+    const footer = panelFooter()
+    expect(footer.contains(saveButton)).toBe(true)
+    // The fields scroll; the save does not live in that scroll container.
+    expect(dialogBody().contains(footer)).toBe(false)
+    expect(dialogBody().contains(screen.getByRole('tablist', { name: 'Plugin endpoints' }))).toBe(true)
+    // And the whole expansion is what the save submits, not the part that happens to be in view.
+    await act(async () => { fireEvent.click(tierTab('Read-only')) })
+    await save()
+    expect(capabilityWrite(harness)).toEqual({
+      shareId: 'existing', capabilities: LONG_READ_TIER,
+    })
+  })
+
+  it('states a refused permission write, keeps the owner picks, and stays usable', async () => {
+    const harness = await showDialog({ offered: READ_ONLY_OFFERED, permissionRefused: true })
+    await act(async () => { fireEvent.click(tierTab('Read-only')) })
+    await save()
+    expect(screen.getByRole('alert').textContent).toBe('The share permissions were not saved. Try again.')
+    // Nothing landed, so the endpoint write that expands the refused tier is never sent either.
+    expect(writeMethods(harness)).toEqual(['updatePermissions'])
+    // The endorsement stays on screen after a refusal: the owner retries the same save.
+    expect(selectedTier()).toBe('Read-only')
+    expect(screen.getByText('Unsaved changes.')).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Save changes' })).toHaveProperty('disabled', false)
+  })
+
+  it('states the permission that landed when only the endpoint write was refused, and re-reads it', async () => {
+    const harness = await showDialog({ offered: READ_ONLY_OFFERED, capabilityRefused: true })
+    await act(async () => { fireEvent.click(tierTab('Read-only')) })
+    const readsBefore = harness.shareReads()
+    await save()
+    // Both writes were sent, and only the endpoint one was refused.
+    expect(writeMethods(harness)).toEqual([
+      'updatePermissions', 'setCapabilities',
+    ])
+    // The message names what actually happened instead of claiming nothing was saved.
+    expect(screen.getByRole('alert').textContent)
+      .toBe('The session permission was updated, but the plugin endpoints were not saved. Try again.')
+    // The host's record is read again once the refusal is known, so the panel states it, not the old one.
+    expect(harness.shareReads()).toBe(readsBefore + 1)
+    // The endpoint pick stays for the retry, and the panel still says the endpoints are unsaved.
+    expect(selectedTier()).toBe('Read-only')
+    expect(screen.getByText('Unsaved changes.')).toBeDefined()
+    expect(saveDisabled()).toBe(false)
+  })
+
+  it('follows the host record while nothing is unsaved, and keeps an unsaved pick', async () => {
+    const poll = interceptPolling()
+    const harness = await showDialog({ offered: READ_ONLY_OFFERED })
+
+    // A change made in Share management reaches the host, and this panel states the same record.
+    harness.stored.sessionMode = 'write'
+    harness.stored.viewerCapabilities = READ_TIER
+    await act(async () => { poll() })
+    expect(selectedMode()).toBe('write')
+    expect(selectedTier()).toBe('Read-only')
+
+    // An unsaved pick of the owner's own is not replaced by a later poll of the host's record.
+    await act(async () => { fireEvent.click(forkSwitch()) })
+    harness.stored.sessionMode = 'view'
+    await act(async () => { poll() })
+    expect(switchOn(forkSwitch())).toBe(true)
+    expect(selectedMode()).toBe('write')
+  })
+
+  it('warns once before closing with unsaved changes, then closes', async () => {
+    const onClose = vi.fn()
+    await showDialog({ offered: READ_ONLY_OFFERED }, onClose)
+    await act(async () => { fireEvent.click(tierTab('Read-only')) })
+    const done = within(panelFooter()).getByRole('button', { name: 'Done' })
+
+    await act(async () => { fireEvent.click(done) })
+    expect(onClose).not.toHaveBeenCalled()
+    expect(screen.getByText('Unsaved changes; choosing Done again discards them.')).toBeDefined()
+
+    await act(async () => { fireEvent.click(done) })
+    expect(onClose).toHaveBeenCalledTimes(1)
+  })
+
+  it('closes without a warning when nothing was changed', async () => {
+    const onClose = vi.fn()
+    await showDialog({ offered: READ_ONLY_OFFERED }, onClose)
+    await act(async () => { fireEvent.click(within(panelFooter()).getByRole('button', { name: 'Done' })) })
+    expect(onClose).toHaveBeenCalledTimes(1)
+    expect(screen.queryByText(/discards them/u)).toBeNull()
+  })
+})
+
+describe('endpoint tier control', () => {
+  it('renders nothing while no plugin offers an endpoint', () => {
+    const view = render(
+      <ShareCapabilitiesPicker
+        offered={[]}
+        tier="none"
+        stale={false}
+        disabled={false}
+        controlId="capabilities"
+        onPick={() => {}}
+        t={translate}
+      />,
+    )
+    expect(view.container.innerHTML).toBe('')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/share-host-fork-wiring.spec.ts b/packages/experimental/liveshare/tests/share-host-fork-wiring.spec.ts
new file mode 100644
index 0000000000..6701c42fee
--- /dev/null
+++ b/packages/experimental/liveshare/tests/share-host-fork-wiring.spec.ts
@@ -0,0 +1,328 @@
+// @vitest-environment node
+/**
+ * The share host's reader wiring for a session that is driven rather than only read: the record it
+ * publishes for each viewer request, the source preparation a write prompt asks for, the child limit a
+ * fork installs, and the limit a cold child gets before its first prompt is admitted.
+ *
+ * The Gateway is a scripted transport here: these cases pin the host's own wiring (which services it
+ * reads and which record it writes), not the Gateway's answers.
+ */
+
+import { Context } from '@deepseek-ai/cordis'
+import { Peer } from '@deepseek-ai/dsh-client-connection'
+import RemoteAccessService from '@deepseek-ai/dsh-api-remote-access'
+import { randomUUID } from 'node:crypto'
+import { createScope } from '@deepseek-ai/dsh-scope'
+import { Session, SessionId, SESSION_FORMAT_VERSION } from '@deepseek-ai/dsh-session'
+import { mkdirSync, mkdtempSync, readFileSync, realpathSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import type {
+  TunnelRegistrationToken,
+  TunnelRequestToken,
+  TunnelWorkerEvent,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type {} from '../src/index.ts'
+import { apply } from '../src/host/share-host.ts'
+import { SHARED_TOOL_PROFILES } from '../src/host/shared-tools.ts'
+import type { TunnelWorkerInput } from '../src/host/tunnel-worker.ts'
+
+const worker = vi.hoisted(() => ({
+  event: undefined as ((event: TunnelWorkerEvent) => void) | undefined,
+  sent: [] as unknown[],
+}))
+vi.mock('../src/host/tunnel-worker.ts', () => ({ TunnelWorker: class {
+  start() {}
+  onEvent(event: (event: TunnelWorkerEvent) => void) { worker.event = event; return () => { worker.event = undefined } }
+  send(command: TunnelWorkerInput) { worker.sent.push(command) }
+  stop() { return Promise.resolve() }
+} }))
+
+const reader = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_reader' }
+/** Every replacement one write-capable layer installs; no-effect tools keep the deployment's own. */
+const WRITE_SURFACE = SHARED_TOOL_PROFILES.filter(profile => !profile.noFileEffect).length
+const CREATOR = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_reader' }
+
+interface HostOptions {
+  /** Make every tool registration throw, as a child scope that refuses its limit does. */
+  readonly registerThrows?: boolean
+  /** Mount no tools service, so an installation cannot even try. */
+  readonly noTools?: boolean
+  /** Recorded child to restore beside the share; absent records none. */
+  readonly child?: string
+}
+
+/** The guard and pre-execute listener one installed child limit registered in its own scope. */
+interface ToolHooks {
+  guard?: ((execution: unknown) => string | undefined) | undefined
+  preExecute?: ((execution: unknown, next: () => Promise<unknown>) => Promise<unknown>) | undefined
+}
+
+/**
+ * Boot a host holding one write share that allows forks, over a live source Session and the recorded
+ * child a cold prompt may name.
+ * @param options - Whether registrations fail, and which child is recorded.
+ * @returns The context, the capture of the agent listener, the counters read, and the request helper.
+ */
+async function host(options: HostOptions = {}) {
+  const temporary = realpathSync(mkdtempSync(join(tmpdir(), 'liveshare-fork-wiring-')))
+  onTestFinished(() => { rmSync(temporary, { recursive: true, force: true }) })
+  const root = join(temporary, 'workspace')
+  mkdirSync(root)
+  const state = join(temporary, 'owner.json')
+  writeFileSync(state, JSON.stringify({ instanceId: 'owner', relayUrl: 'https://relay.invalid', shares: [{ relay: 'https://relay.invalid',
+    shareId: 'share', sessionId: 'source', sessionTitle: 'Source', accessMode: 'open',
+    gatewayToken: 'token', allowedSubjectIds: [], createdAt: '2026-10-08T00:00:00Z',
+    sessionMode: 'write', allowsFork: true,
+  }] }))
+  if (options.child !== undefined) {
+    writeFileSync(join(temporary, 'forks.json'), JSON.stringify({ version: 1, forks: [{
+      childSessionId: options.child, shareId: 'share', sourceSessionId: 'source', boundary: 0,
+      creator: CREATOR, createdAt: '2026-10-08T00:00:00Z',
+    }] }))
+  }
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  await ctx.plugin(RemoteAccessService)
+  const sessionOf = (id: string) => Session.create(SessionId(id), [], {
+    version: SESSION_FORMAT_VERSION, id: SessionId(id), cwd: root, createdAt: 0, isSeeded: false,
+  })
+  const sessions = new Map<string, Session>()
+  const scopes = new Map<string, Context>()
+  const scopeListeners = new Map<string, Map<string, (...args: never[]) => unknown>>()
+  const live = (id: string) => {
+    let session = sessions.get(id)
+    if (session === undefined) { session = sessionOf(id); sessions.set(id, session) }
+    let scope = scopes.get(id)
+    if (scope === undefined) {
+      scope = createScope(ctx, {}).ctx
+      Object.defineProperty(scope, 'tools', { value: tools })
+      const listeners = new Map<string, (...args: never[]) => unknown>()
+      const originalOn = scope.on.bind(scope)
+      scope.on = ((name: string, listener: (...args: never[]) => unknown) => {
+        listeners.set(name, listener)
+        return originalOn(name as never, listener as never)
+      }) as never
+      scopeListeners.set(id, listeners)
+      scopes.set(id, scope)
+    }
+    return { id: SessionId(id), session, ctx: scope, cancel: () => {} }
+  }
+  let registrations = 0
+  // The deployment's own definitions are what a confined replacement wraps; keeping them apart from the
+  // registrations a scope accepted lets one case run the replacement without recursing into another layer.
+  const deploymentDefinitions = new Map<string, Record<string, unknown>>()
+  const registeredDefinitions = new Map<string, Record<string, unknown>>()
+  const definition = (name: string) => {
+    const held = deploymentDefinitions.get(name)
+    if (held !== undefined) return held
+    const created = {
+      name,
+      description: 'fixture tool',
+      parameters: {},
+      output: { schema: {}, render: () => [] },
+      execute: () => Promise.resolve(undefined),
+    }
+    deploymentDefinitions.set(name, created)
+    return created
+  }
+  const hooks: ToolHooks = {}
+  const tools = {
+    get: (name: string) => definition(name),
+    register: (registered: { readonly name: string }) => {
+      if (options.registerThrows === true) throw new Error('that child scope refused the registration')
+      registrations += 1
+      registeredDefinitions.set(registered.name, registered)
+      return () => { registeredDefinitions.delete(registered.name) }
+    },
+    guard: (guard: ToolHooks['guard']) => {
+      hooks.guard = guard
+      return () => { delete hooks.guard }
+    },
+  }
+  if (options.noTools !== true) ctx.provide('tools', tools as never)
+  ctx.provide('agents', { get: (id: string) => live(id) } as never)
+  ctx.provide('fs', {
+    resolve: async (path: string) => ({ targetKey: path, displayPath: path }),
+    contains: () => true,
+    processPath: (target: { readonly targetKey: string }) => target.targetKey,
+    writeText: async () => ({ version: 1, operation: 'create' as const }),
+  } as never)
+  ctx.provide('sandboxPolicy', {
+    resolve: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: SessionId('source') }),
+  } as never)
+  ctx.provide('typert', { lookups: { get: (key: string) => key === 'agent'
+    ? { resolve: async (id: string) => live(id) }
+    : undefined } } as never)
+  const dispatch = vi.fn(async (request: Request) => {
+    const path = new URL(request.url).pathname
+    return Response.json({
+      type: 'server-response',
+      rpcId: 'fixture',
+      result: path === '/api/session/fork'
+        ? { ok: true, value: { sessionId: 'fork-child' } }
+        : { ok: true, value: {} },
+    })
+  })
+  ctx.provide('connection', {
+    createSharedFetchHandler: () => ({ requestBodyMode: () => 'buffered', fetch: dispatch }),
+    createPeer: (peerOptions: ConstructorParameters<typeof Peer>[1]) => new Peer(ctx, peerOptions),
+    fetch: { register: () => () => {} },
+  } as never)
+  const listeners = new Map<string, (...args: never[]) => unknown>()
+  const originalOn = ctx.on.bind(ctx)
+  ctx.on = ((name: string, listener: (...args: never[]) => unknown) => {
+    listeners.set(name, listener)
+    return originalOn(name as never, listener as never)
+  }) as never
+  vi.stubGlobal('fetch', async (input: RequestInfo | URL, init?: RequestInit) => {
+    const request = new Request(input, init)
+    if (request.url.endsWith('/owner-credential')) return Response.json({ supported: true })
+    return Response.json({
+      version: 1, accessMode: 'open', allowedSubjectIds: [], requests: [], sessionMode: 'write',
+    })
+  })
+  onTestFinished(() => { vi.unstubAllGlobals() })
+  const stop = await apply(ctx, { ownerStateFile: state })
+  onTestFinished(stop)
+  await new Promise((resolve) => { setTimeout(resolve, 0) })
+  worker.event?.({ type: 'share-access-state', registrationToken: randomUUID() as TunnelRegistrationToken,
+    shareId: 'share', version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'write' } as never)
+  /** Send one viewer request the way the Relay forwards it. */
+  const ask = async (body: unknown): Promise<{ readonly status: number; readonly body: unknown }> => {
+    const token = `wiring-${randomUUID()}` as TunnelRequestToken
+    worker.event?.({ type: 'share-rpc-request', registrationToken: randomUUID() as TunnelRegistrationToken,
+      shareId: 'share', token, id: 1, actor: reader, body })
+    return vi.waitFor(() => {
+      const found = worker.sent.find((command): command is { token: string; status: number; body: unknown } =>
+        typeof command === 'object' && command !== null && 'token' in command && command.token === token)
+      if (found === undefined) throw new Error('no answer yet')
+      return found
+    })
+  }
+  /** The limit one installed child registered in its own scope. */
+  const hooksOf = (id: string): {
+    readonly guard: (execution: unknown) => string | undefined
+    readonly preExecute: (execution: unknown, next: () => Promise<unknown>) => Promise<unknown>
+  } => {
+    const preExecute = scopeListeners.get(id)?.get('tools/pre-execute')
+    if (hooks.guard === undefined || preExecute === undefined) throw new Error(`child ${id} installed no limit`)
+    return { guard: hooks.guard, preExecute: preExecute as never }
+  }
+  /** One definition this fixture registered, so a case can run the confined tool itself. */
+  const toolDefinition = (name: string): { execute: (args: unknown, exec: unknown) => Promise<unknown> } => {
+    const held = registeredDefinitions.get(name)
+    if (held === undefined) throw new Error(`no ${name} definition was registered`)
+    return held as { execute: (args: unknown, exec: unknown) => Promise<unknown> }
+  }
+  return {
+    ctx, ask, dispatch, listeners, hooksOf, toolDefinition,
+    registrations: () => registrations,
+    forks: () => (JSON.parse(readFileSync(join(temporary, 'forks.json'), 'utf8')) as {
+      forks: { childSessionId: string }[]
+    }).forks.map(entry => entry.childSessionId),
+  }
+}
+
+const forkRequest = {
+  op: 'call' as const,
+  path: '/api/session/fork',
+  body: { sessionId: 'source', requestId: 'fork-1', address: { kind: 'session', sessionId: 'source' } },
+}
+
+/** One prompt naming a Session, as the viewer page's composer sends it. */
+function promptRequest(sessionId: string) {
+  return {
+    op: 'call' as const,
+    path: '/api/session/prompt',
+    body: { sessionId, requestId: 'prompt-1', mode: 'queue', content: [{ type: 'text', text: 'hello' }] },
+  }
+}
+
+describe('share-host fork wiring', () => {
+  it('records a forked child and installs its limit before answering', async () => {
+    const fixture = await host()
+    const before = fixture.registrations()
+
+    const answer = await fixture.ask(forkRequest)
+
+    expect(answer.status).toBe(200)
+    expect(fixture.forks()).toContain('fork-child')
+    // The child's own confined view surface and its bounded write and edit are the layer the answer
+    // promises.
+    expect(fixture.registrations()).toBe(before + WRITE_SURFACE)
+    expect(fixture.dispatch).toHaveBeenCalled()
+  })
+
+  it('prepares a cold child before admitting its prompt', async () => {
+    const fixture = await host({ child: 'child-1' })
+    const before = fixture.registrations()
+
+    const answer = await fixture.ask(promptRequest('child-1'))
+
+    expect(answer.status).toBe(200)
+    expect(fixture.registrations()).toBe(before + WRITE_SURFACE)
+  })
+
+  it('refuses a cold child whose limit its scope will not take', async () => {
+    const fixture = await host({ child: 'child-1', registerThrows: true })
+
+    const answer = await fixture.ask(promptRequest('child-1'))
+
+    expect(answer.status).toBe(403)
+    expect(answer.body).toMatchObject({ error: 'fork-prepare-failed' })
+    expect(String((answer.body as { message?: unknown }).message)).toContain('refused the registration')
+  })
+
+  it('installs a recorded child limit when its agent is announced', async () => {
+    const fixture = await host({ child: 'child-1' })
+    const before = fixture.registrations()
+    const listener = fixture.listeners.get('agent/created')
+    if (listener === undefined) throw new Error('the host registered no agent listener')
+
+    await listener({ agent: { id: 'child-1', session: { id: 'child-1', header: { cwd: '/' } }, ctx: new Context() } } as never)
+
+    expect(fixture.registrations()).toBe(before + WRITE_SURFACE)
+    await fixture.ctx.fiber.dispose()
+  })
+
+  it('judges one tool execution of an installed child through its own record', async () => {
+    const fixture = await host()
+    await fixture.ask(forkRequest)
+    const hooks = fixture.hooksOf('fork-child')
+    const execution = {
+      name: 'read',
+      arguments: { file_path: '/workspace/file.txt' },
+      agent: { id: 'fork-child' },
+      token: Symbol('execution'),
+      signal: new AbortController().signal,
+    }
+
+    // The pre-execute verdict asks the share's authority again and names the paths this host confines.
+    await expect(hooks.preExecute(execution, () => Promise.resolve({ kind: 'allow' })))
+      .resolves.toEqual({ kind: 'allow' })
+    // The guard reads the same record, so one execution is judged the same on both hooks.
+    expect(hooks.guard(execution)).toBeUndefined()
+  })
+
+  it('refuses a cold child limit it has no services to install', async () => {
+    const fixture = await host({ child: 'child-1', noTools: true })
+
+    const answer = await fixture.ask(promptRequest('child-1'))
+
+    expect(answer.status).toBe(403)
+    expect(answer.body).toMatchObject({ error: 'fork-prepare-failed' })
+    expect(String((answer.body as { message?: unknown }).message))
+      .toContain('fork execution limits are unavailable')
+  })
+
+  it('refreshes the share authority before a confined tool executes', async () => {
+    const fixture = await host()
+    await fixture.ask(forkRequest)
+    const read = fixture.toolDefinition('read')
+
+    await expect(read.execute({ file_path: '/workspace/file.txt' },
+      { signal: new AbortController().signal })).resolves.toBeUndefined()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/share-host-listeners.spec.ts b/packages/experimental/liveshare/tests/share-host-listeners.spec.ts
new file mode 100644
index 0000000000..902d4bb775
--- /dev/null
+++ b/packages/experimental/liveshare/tests/share-host-listeners.spec.ts
@@ -0,0 +1,456 @@
+/** Share-host assembly: configuration guards, agent listeners, and owner state projection. */
+
+import { mkdtempSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { Context } from '@deepseek-ai/cordis'
+import { createScope } from '@deepseek-ai/dsh-scope'
+import type { ToolDefinition } from '@deepseek-ai/dsh-tools'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { apply, publishedShareState, type Config, type OwnerShare } from '../src/host/share-host.ts'
+import type { ForkToolExecution } from '../src/host/fork-tool-guard.ts'
+import { FakeTunnelWorker } from './tunnel-supervision-fake-worker.ts'
+import { shareViewerPrincipal } from '../src/host/viewer-principal.ts'
+
+vi.mock('../src/host/tunnel-worker.ts', async () => {
+  const { FakeTunnelWorker: Fake } = await import('./tunnel-supervision-fake-worker.ts')
+  return { TunnelWorker: Fake }
+})
+
+const RELAY = 'https://relay.example.test/liveshare'
+const roots: string[] = []
+afterEach(() => {
+  for (const root of roots.splice(0)) rmSync(root, { recursive: true, force: true })
+  vi.unstubAllEnvs()
+  vi.restoreAllMocks()
+})
+beforeEach(() => {
+  vi.spyOn(console, 'warn').mockImplementation(() => {})
+  vi.spyOn(console, 'error').mockImplementation(() => {})
+  vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 503 })))
+  FakeTunnelWorker.instances.length = 0
+})
+
+function stateFile(options: {
+  readonly shares?: readonly Record<string, unknown>[]
+  readonly forks?: readonly Record<string, unknown>[]
+  /** Saved address; `null` stores none, and the default saves RELAY. */
+  readonly relayUrl?: string | null
+} = {}): { readonly file: string; readonly forkFile: string } {
+  const root = mkdtempSync(join(tmpdir(), 'liveshare-host-listeners-'))
+  roots.push(root)
+  const file = join(root, 'owner-shares.json')
+  const relayUrl = options.relayUrl === undefined ? RELAY : options.relayUrl
+  writeFileSync(file, JSON.stringify({
+    ...(relayUrl === null ? {} : { relayUrl }),
+    shares: (options.shares ?? []).map(share => relayUrl === null ? share : { relay: relayUrl, ...share }),
+  }))
+  if (options.forks !== undefined) {
+    writeFileSync(join(root, 'forks.json'), JSON.stringify({ version: 1, forks: options.forks }))
+  }
+  return { file, forkFile: join(root, 'forks.json') }
+}
+
+function stored(overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return {
+    shareId: 'share-1', sessionId: 'session-1', sessionTitle: 'Session', accessMode: 'open',
+    gatewayToken: 'token', allowedSubjectIds: [], createdAt: '2026-01-01T00:00:00Z',
+    allowsFork: false, sessionMode: 'view', online: false, ...overrides,
+  }
+}
+
+function forkRecord(overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return {
+    childSessionId: 'child-1', shareId: 'share-1', sourceSessionId: 'session-1', boundary: 1,
+    creator: { providerId: 'p', tenantId: 't', subjectId: 'alice' }, createdAt: '2026-01-01T00:00:00Z',
+    ...overrides,
+  }
+}
+
+interface Mounted {
+  readonly ctx: Context
+  readonly handlers: Map<string, (...args: unknown[]) => Promise<unknown>>
+  readonly routes: Map<string, (...args: never[]) => unknown>
+}
+
+async function mount(
+  config: Partial<Config> & {
+    readonly state?: ReturnType<typeof stateFile>
+    /** Mount with no owner state file configured, so the DSH_HOME default is read. */
+    readonly useDshHome?: boolean
+  } = {},
+): Promise<Mounted> {
+  const handlers = new Map<string, (...args: unknown[]) => Promise<unknown>>()
+  const routes = new Map<string, (...args: never[]) => unknown>()
+  const ctx = Object.assign(new Context(), {
+    connection: {
+      authenticatedUrl: () => 'http://127.0.0.1:3092/?token=test',
+      fetch: {
+        register: (route: { readonly path: string; readonly fetch: (...args: never[]) => unknown }) => {
+          routes.set(route.path, route.fetch)
+          return Promise.resolve(async () => {})
+        },
+      },
+    },
+    webServer: { port: 3092 },
+  })
+  const originalOn = ctx.on.bind(ctx)
+  ctx.on = ((name: string, listener: (...args: never[]) => unknown) => {
+    if (!handlers.has(name)) handlers.set(name, listener as (...args: unknown[]) => Promise<unknown>)
+    return originalOn(name as never, listener as never)
+  }) as never
+  const { state, useDshHome, ...rest } = config
+  const files = state ?? stateFile()
+  await apply(ctx, {
+    ...(useDshHome === true ? {} : { ownerStateFile: files.file }),
+    ...rest,
+  })
+  return { ctx, handlers, routes }
+}
+
+describe('configuration guards', () => {
+  it('refuses missing or unusable configuration at load', async () => {
+    const base = { connection: { fetch: { register: () => Promise.resolve(async () => {}) } } }
+    await expect(apply(Object.assign(new Context(), base), {
+      allowedSubjectIds: [''], ownerStateFile: stateFile().file,
+    })).rejects.toThrow('allowedSubjectIds must not contain an empty subject')
+    await expect(apply(Object.assign(new Context(), base), { ownerStateFile: '' }))
+      .rejects.toThrow('ownerStateFile must not be empty')
+    await expect(apply(Object.assign(new Context(), base), {
+      ownerIdentityProvider: 'p', ownerStateFile: stateFile().file,
+    })).rejects.toThrow('ownerIdentity fields require provider, tenant, and subject')
+  })
+
+  it('resolves the owner identity from complete fields', async () => {
+    const mounted = await mount({
+      ownerIdentityProvider: 'p', ownerIdentityTenant: 't', ownerIdentitySubject: 'owner',
+      ownerIdentityDisplayName: 'Named Owner',
+    })
+    await expect(mounted.ctx.liveshareShares.identity({ relay: RELAY })).resolves.toBeDefined()
+    await mounted.ctx.fiber.dispose()
+  })
+
+  it('publishes a share record with and without optional fields', async () => {
+    // An owner record that names no plugin endpoints, deadline, or tier still publishes the facts the
+    // reader decides against, with the optional fields absent rather than defaulted.
+    // A record restored from an older owner state carries no tier; drop it after typing the record so
+    // the published facts show the field absent rather than defaulted.
+    const legacy: OwnerShare = {
+      shareId: 'share-1', sessionId: 'session-1', sessionTitle: 'Session', accessMode: 'open',
+      gatewayToken: 'token', allowedSubjectIds: [], createdAt: '2026-01-01T00:00:00Z',
+      allowsFork: false, online: false, link: '', relay: RELAY, revision: 0, sessionMode: 'view',
+    }
+    delete (legacy as { sessionMode?: OwnerShare['sessionMode'] }).sessionMode
+    expect(publishedShareState(legacy)).toEqual({
+      shareId: 'share-1', sessionId: 'session-1', allowsFork: false, viewerAdmitted: true,
+      stopped: false, sessionMode: undefined,
+    })
+    expect(publishedShareState({
+      shareId: 'share-2', sessionId: 'session-2', sessionTitle: 'Session', accessMode: 'open',
+      gatewayToken: 'token', allowedSubjectIds: [], createdAt: '2026-01-01T00:00:00Z',
+      allowsFork: true, online: true, link: '', relay: RELAY, revision: 0,
+      sessionMode: 'write', expiresAt: '2026-01-02T00:00:00Z',
+      viewerCapabilities: [{ plugin: 'mekGit', readable: ['mekGit/getGraph'], writable: [] }],
+    })).toMatchObject({
+      viewerCapabilities: [{ plugin: 'mekGit', readable: ['mekGit/getGraph'], writable: [] }],
+      expiresAt: '2026-01-02T00:00:00Z',
+    })
+  })
+
+  it('derives its default owner state file from DSH_HOME', async () => {
+    const root = mkdtempSync(join(tmpdir(), 'liveshare-dsh-home-'))
+    roots.push(root)
+    vi.stubEnv('DSH_HOME', root)
+    vi.stubEnv('LIVESHARE_OWNER_STATE_FILE', '')
+    vi.stubEnv('LIVESHARE_OWNER_CREDENTIAL_FILE', '')
+    const mounted = await mount({ useDshHome: true })
+    expect(mounted.routes.size).toBeGreaterThan(0)
+    await mounted.ctx.fiber.dispose()
+  })
+
+  it('falls back to the user home when neither DSH_HOME nor a state file is named', async () => {
+    const root = mkdtempSync(join(tmpdir(), 'liveshare-home-'))
+    roots.push(root)
+    vi.stubEnv('HOME', root)
+    vi.stubEnv('DSH_HOME', '')
+    vi.stubEnv('LIVESHARE_OWNER_STATE_FILE', '')
+    vi.stubEnv('LIVESHARE_OWNER_CREDENTIAL_FILE', '')
+    const mounted = await mount({ useDshHome: true })
+    expect(mounted.routes.size).toBeGreaterThan(0)
+    await mounted.ctx.fiber.dispose()
+  })
+
+  it('names an owner identity without a display name by its subject', async () => {
+    const mounted = await mount({ ownerIdentityProvider: 'p', ownerIdentityTenant: 't', ownerIdentitySubject: 'owner' })
+    await expect(mounted.ctx.liveshareShares.identity({ relay: RELAY })).resolves.toBeDefined()
+    await mounted.ctx.fiber.dispose()
+  })
+
+
+  it('drops a startup claim that answers after the host was disposed', async () => {
+    const root = mkdtempSync(join(tmpdir(), 'liveshare-claim-late-'))
+    roots.push(root)
+    const state = join(root, 'owner-shares.json')
+    writeFileSync(state, JSON.stringify({
+      instanceId: 'owner', relayUrl: RELAY, shares: [{ relay: RELAY, ...stored() }],
+    }))
+    writeFileSync(join(root, 'owner-credential.json'), JSON.stringify({ relay: RELAY, credential: 'token' }))
+    const claim = Promise.withResolvers<Response>()
+    vi.stubGlobal('fetch', vi.fn((input: RequestInfo | URL) => {
+      const request = new Request(input)
+      if (request.url.endsWith('/owner-credential')) return Promise.resolve(Response.json({ supported: true }))
+      return claim.promise
+    }))
+    const mounted = await mount({ state: { file: state, forkFile: join(root, 'forks.json') } })
+    await mounted.ctx.fiber.dispose()
+    // The pass was in flight when this host went away, so its answer is not recorded anywhere.
+    claim.resolve(Response.json({ claimed: true }))
+    await new Promise((resolve) => { setTimeout(resolve, 0) })
+    await new Promise((resolve) => { setTimeout(resolve, 0) })
+  })
+
+  it('reports the saved Relay address', async () => {
+    const files = stateFile({ relayUrl: 'https://override.example.test/liveshare' })
+    const mounted = await mount({ state: files })
+    expect(mounted.ctx.liveshareShares.relay()).toEqual({
+      override: 'https://override.example.test/liveshare',
+      effective: 'https://override.example.test/liveshare',
+    })
+    await mounted.ctx.fiber.dispose()
+  })
+
+  it('loads with no saved address and refuses to publish before one exists', async () => {
+    const mounted = await mount({ state: stateFile({ relayUrl: null }) })
+
+    // A host without an address is a valid composition: the sharing surfaces load and say so.
+    expect(mounted.ctx.liveshareShares.relay()).toEqual({})
+    await expect(mounted.ctx.liveshareShares.create({ sessionId: 'session-1' }))
+      .rejects.toMatchObject({ code: 'liveshareShares/relay-url-required' })
+    await expect(mounted.ctx.liveshareShares.identity({}))
+      .rejects.toMatchObject({ code: 'liveshareShares/relay-url-required' })
+    await mounted.ctx.fiber.dispose()
+  })
+})
+
+describe('agent created listener', () => {
+  function agentFor(id: string, session = { id: 'session-1', header: { cwd: '/workspace' } }): Record<string, unknown> {
+    const scope = new Context()
+    return { id, session, ctx: scope }
+  }
+
+  it('installs a published share layer and ignores an unrecorded child', async () => {
+    const mounted = await mount({ state: stateFile({ shares: [stored()] }) })
+    const listener = mounted.handlers.get('agent/created')
+    expect(listener).toBeDefined()
+    await expect(listener?.({ agent: agentFor('session-1') })).resolves.toBeUndefined()
+    await expect(listener?.({ agent: { id: 'unrecorded', session: { id: 'session-2', header: {} }, ctx: new Context() } }))
+      .resolves.toBeUndefined()
+    await mounted.ctx.fiber.dispose()
+  })
+
+  it('refuses a revoked child and one it cannot limit', async () => {
+    const revoked = await mount({ state: stateFile({ shares: [stored()], forks: [forkRecord({ revokedAt: 'now' })] }) })
+    await expect(revoked.handlers.get('agent/created')?.({ agent: agentFor('child-1') }))
+      .rejects.toThrow('no longer active')
+    await revoked.ctx.fiber.dispose()
+
+    const unlimited = await mount({ state: stateFile({ shares: [stored()], forks: [forkRecord()] }) })
+    await expect(unlimited.handlers.get('agent/created')?.({ agent: agentFor('child-1') }))
+      .rejects.toThrow('could not be given read-only limits')
+    await unlimited.ctx.fiber.dispose()
+  })
+})
+
+describe('viewer turn confinement', () => {
+  /**
+   * Mount a host whose source Session can actually install its layer: a live scoped Agent and the four
+   * services the layer reads. The captured guard is what the real tool pipeline would consult.
+   */
+  async function mountedSource() {
+    const mounted = await mount({ state: stateFile({ shares: [stored()] }) })
+    const root = '/workspace'
+    const registered = new Map<string, ToolDefinition>()
+    let guard: ((execution: ForkToolExecution) => string | undefined) | undefined
+    const read: ToolDefinition = {
+      name: 'read', description: 'a deployment read', parameters: {},
+      output: {
+        schema: { type: 'string' },
+        render: (_args, value) => [{ type: 'text', text: typeof value === 'string' ? value : JSON.stringify(value) }],
+      },
+      execute: () => Promise.resolve('read ran'),
+    }
+    registered.set('read', read)
+    const scope = createScope(mounted.ctx, { session: 'session-1' })
+    const live = {
+      id: 'session-1',
+      session: { id: 'session-1', header: { cwd: root } },
+      ctx: scope.ctx,
+    }
+    mounted.ctx.provide('agents', { get: (id: string) => id === 'session-1' ? live : undefined } as never)
+    mounted.ctx.provide('fs', {
+      resolve: async (path: string) => ({ targetKey: path, displayPath: path }),
+      contains: () => true,
+      processPath: (path: string) => path,
+      writeText: async () => ({ operation: 'update', before: null, after: 'v1', version: 'v1' }),
+      editText: async () => ({ before: null, after: 'v1', version: 'v1' }),
+    } as never)
+    mounted.ctx.provide('tools', {
+      get: (name: string) => registered.get(name),
+      register: (definition: ToolDefinition) => {
+        registered.set(definition.name, definition)
+        return () => { registered.delete(definition.name) }
+      },
+      guard: (registeredGuard: (execution: ForkToolExecution) => string | undefined) => {
+        guard = registeredGuard
+        return () => { guard = undefined }
+      },
+    } as never)
+    mounted.ctx.provide('sandboxPolicy', {
+      resolve: () => ({ mode: 'read-only', workspaceRoot: root, sessionId: 'session-1' }),
+    } as never)
+    await mounted.handlers.get('agent/created')?.({ agent: live })
+    return { mounted, live, guard: () => guard }
+  }
+
+  const viewerMessage = {
+    source: { kind: 'user' as const, principal: shareViewerPrincipal('share-1', { providerId: 'p', tenantId: 't', subjectId: 'alice' }) },
+  }
+  const ownerMessage = { source: { kind: 'user' as const } }
+
+  it('confines a viewer-started turn, keeps an owner’s turn native, and keeps owner steering confined', async () => {
+    const { mounted, live, guard } = await mountedSource()
+    vi.stubGlobal('fetch', vi.fn(async () => Response.json({
+      version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view', requests: [],
+    })))
+    const preStep = mounted.handlers.get('agent/pre-step')
+    const runStep = (turn: number, messages: readonly unknown[]) =>
+      preStep?.({ agent: live, turn, signal: new AbortController().signal, messages }, async () => ({
+        kind: 'enter', messages,
+      }))
+
+    // A viewer-started turn is confined: the shell is not a name this installation replaced.
+    await expect(runStep(1, [viewerMessage])).resolves.toMatchObject({ kind: 'enter' })
+    expect(guard()?.({ name: 'bash', arguments: { command: 'ls' }, agent: live })).toMatch(/may not use bash/u)
+    // The owner's steering input joins that same turn, which stays confined.
+    await expect(runStep(1, [ownerMessage])).resolves.toMatchObject({ kind: 'enter' })
+    expect(guard()?.({ name: 'bash', arguments: { command: 'ls' }, agent: live })).toMatch(/may not use bash/u)
+
+    // The next turn is the owner's: the deployment's own tools run, unchanged by the mounted layer.
+    await expect(runStep(2, [ownerMessage])).resolves.toMatchObject({ kind: 'enter' })
+    expect(guard()?.({ name: 'bash', arguments: { command: 'ls' }, agent: live })).toBeUndefined()
+    // An execution this host cannot attribute to an Agent is confined rather than escaping the layer.
+    expect(guard()?.({ name: 'bash', arguments: { command: 'ls' }, agent: { id: 42 } }))
+      .toMatch(/may not use bash/u)
+    // A viewer message in a later step of the owner's running turn narrows that same turn.
+    await expect(runStep(2, [viewerMessage])).resolves.toMatchObject({ kind: 'enter' })
+    expect(guard()?.({ name: 'bash', arguments: { command: 'ls' }, agent: live })).toMatch(/may not use bash/u)
+    // A viewer's later turn is confined again.
+    await expect(runStep(3, [viewerMessage])).resolves.toMatchObject({ kind: 'enter' })
+    expect(guard()?.({ name: 'bash', arguments: { command: 'ls' }, agent: live })).toMatch(/may not use bash/u)
+    await mounted.ctx.fiber.dispose()
+  })
+})
+
+describe('agent pre-step gate', () => {
+  const decision = { kind: 'enter', messages: [] }
+  const next = async () => decision
+
+  it('passes a decision it does not need to gate', async () => {
+    const mounted = await mount()
+    const listener = mounted.handlers.get('agent/pre-step')
+    await expect(listener?.({ agent: { session: { id: 'child-1' } }, turn: 1 }, async () => ({ kind: 'reject' })))
+      .resolves.toEqual({ kind: 'reject' })
+    await expect(listener?.({ agent: { session: { id: 'session-1' } }, turn: 1 }, next)).resolves.toEqual(decision)
+    await mounted.ctx.fiber.dispose()
+  })
+
+  it('admits a reader-owned turn of its own recorded child', async () => {
+    const mounted = await mount({ state: stateFile({ shares: [stored()], forks: [forkRecord()] }) })
+    vi.stubGlobal('fetch', vi.fn(async () => Response.json({
+      version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view', requests: [],
+    })))
+    const decision = {
+      kind: 'enter' as const,
+      messages: [{
+        source: {
+          kind: 'user',
+          principal: shareViewerPrincipal('share-1', { providerId: 'p', tenantId: 't', subjectId: 'alice' }),
+        },
+      }],
+    }
+
+    await expect(mounted.handlers.get('agent/pre-step')?.(
+      { agent: { session: { id: 'child-1' } }, turn: 1 },
+      async () => decision,
+    )).resolves.toEqual(decision)
+    await mounted.ctx.fiber.dispose()
+  })
+
+  it('refuses queued input for a child without a live limit', async () => {
+    const mounted = await mount({ state: stateFile({ shares: [stored()], forks: [forkRecord({ revokedAt: 'now' })] }) })
+    await expect(mounted.handlers.get('agent/pre-step')?.({ agent: { session: { id: 'child-1' } }, turn: 1 }, next))
+      .resolves.toEqual({ kind: 'reject' })
+    await mounted.ctx.fiber.dispose()
+  })
+
+
+  it('leaves a queued message from a principal this package does not drive alone', async () => {
+    const mounted = await mount()
+    const decision = { kind: 'enter' as const, messages: [{ source: { kind: 'user', principal: { kind: 'owner' } } }] }
+    await expect(mounted.handlers.get('agent/pre-step')?.(
+      { agent: { session: { id: 'session-1' } }, turn: 1 },
+      async () => decision,
+    )).resolves.toEqual(decision)
+    await mounted.ctx.fiber.dispose()
+  })
+
+  it('refuses a reader-owned turn that names a Session this share does not reach', async () => {
+    const mounted = await mount({ state: stateFile({ shares: [stored()] }) })
+    const actor = { providerId: 'p', tenantId: 't', subjectId: 'alice' }
+    // The Relay still admits this reader, but the step drives a Session the share neither names nor
+    // reached through a fork of this reader.
+    vi.stubGlobal('fetch', vi.fn(async () => Response.json({
+      version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view', requests: [],
+    })))
+    const decision = { kind: 'enter' as const, messages: [{
+      source: { kind: 'user', principal: shareViewerPrincipal('share-1', actor) },
+    }] }
+
+    await expect(mounted.handlers.get('agent/pre-step')?.(
+      { agent: { session: { id: 'other-session' } }, turn: 1 },
+      async () => decision,
+    )).resolves.toEqual({ kind: 'reject' })
+    await mounted.ctx.fiber.dispose()
+  })
+
+  it('refuses queued input for a revoked child while its share still answers', async () => {
+    const mounted = await mount({ state: stateFile({ shares: [stored()], forks: [forkRecord({ revokedAt: 'now' })] }) })
+    vi.stubGlobal('fetch', vi.fn(async () => Response.json({
+      version: 1, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view', requests: [],
+    })))
+
+    await expect(mounted.handlers.get('agent/pre-step')?.(
+      { agent: { session: { id: 'child-1' } }, turn: 1 },
+      async () => ({ kind: 'enter', messages: [] }),
+    )).resolves.toEqual({ kind: 'reject' })
+    await mounted.ctx.fiber.dispose()
+  })
+
+  it('refuses queued input whose share authority cannot be refreshed', async () => {
+    const mounted = await mount({ state: stateFile({ shares: [stored()] }) })
+    vi.stubGlobal('fetch', vi.fn(async () => { throw new Error('offline') }))
+    await expect(mounted.handlers.get('agent/pre-step')?.(
+      { agent: { session: { id: 'session-1' } }, turn: 1 },
+      async () => ({
+        kind: 'enter',
+        messages: [{
+          source: {
+            kind: 'user',
+            principal: shareViewerPrincipal('share-1', { providerId: 'p', tenantId: 't', subjectId: 'alice' }),
+          },
+        }],
+      }),
+    )).resolves.toEqual({ kind: 'reject' })
+    await mounted.ctx.fiber.dispose()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/share-navigation.client.spec.ts b/packages/experimental/liveshare/tests/share-navigation.client.spec.ts
new file mode 100644
index 0000000000..6128c21d4a
--- /dev/null
+++ b/packages/experimental/liveshare/tests/share-navigation.client.spec.ts
@@ -0,0 +1,31 @@
+/** The in-memory handoff from the global share list to one Session's header action. */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import {
+  forgetManagedShare, openManagedSession, rememberManagedShare, setManagedShareOpener, takeManagedShare,
+} from '../src/client/share-navigation.ts'
+
+afterEach(() => { forgetManagedShare(); setManagedShareOpener(undefined) })
+
+describe('managed share handoff', () => {
+  it('consumes one matching request and drops the rest', () => {
+    rememberManagedShare('session-b')
+    expect(takeManagedShare('session-a')).toBe(false)
+    expect(takeManagedShare('session-b')).toBe(true)
+    expect(takeManagedShare('session-b')).toBe(false)
+  })
+
+  it('forgets a request when navigation cannot complete', () => {
+    rememberManagedShare('session-a')
+    forgetManagedShare()
+    expect(takeManagedShare('session-a')).toBe(false)
+  })
+
+  it('opens the bound workspace Session when one exists', () => {
+    const open = vi.fn()
+    openManagedSession('session-a')
+    setManagedShareOpener(open)
+    openManagedSession('session-a')
+    expect(open).toHaveBeenCalledWith('session-a')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/share-relay-field.client.spec.tsx b/packages/experimental/liveshare/tests/share-relay-field.client.spec.tsx
new file mode 100644
index 0000000000..46b17495c1
--- /dev/null
+++ b/packages/experimental/liveshare/tests/share-relay-field.client.spec.tsx
@@ -0,0 +1,246 @@
+// @vitest-environment jsdom
+/** Owner-facing Relay URL override field, with only the share-management Remote substituted. */
+
+import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import { LiveshareShareDialog, type LiveshareShareDialogProps } from '../src/client/ShareDialog.tsx'
+import { en } from '../src/client/locales.ts'
+import type {
+  OwnerIdentityStatus, OwnerRelayState, RelayConnectivityView, RelayPublishView,
+} from '../src/share-api-types.ts'
+import {
+  accepted, DOUBLE_RELAY, ownerSharesDouble, refused, type OwnerSharesCall, type OwnerSharesDouble,
+} from './owner-shares-double.client.ts'
+
+afterEach(() => {
+  cleanup()
+  vi.unstubAllGlobals()
+})
+
+const translate: LiveshareShareDialogProps['t'] = (key, params) => {
+  let result: string = (en as Readonly<Record<string, string>>)[key] ?? key
+  for (const [name, value] of Object.entries(params ?? {})) result = result.replace(`{${name}}`, String(value))
+  return result
+}
+
+interface RelayResponses {
+  readonly state?: OwnerRelayState
+  /** The state a saved address answers with; the default echoes the saved address. */
+  readonly postBody?: OwnerRelayState
+  /** What the Host reports about the owner for one requested Relay address; absent reports nothing. */
+  readonly identity?: (relay: string) => OwnerIdentityStatus
+  /** What the connectivity check answers; the default is an address that answers. */
+  readonly connectivity?: RelayConnectivityView
+  /** What the permission check answers; the default is a registration the Relay accepts. */
+  readonly permission?: RelayPublishView
+}
+
+/** One recorded request, read by method. */
+function callsOf(host: OwnerSharesDouble, method: OwnerSharesCall['method']): readonly unknown[] {
+  return host.calls.filter(call => call.method === method).map(call => call.argument)
+}
+
+/** Save the field by leaving it, which is the dialog's only save action. */
+async function saveAddress(): Promise<void> {
+  await act(async () => { fireEvent.blur(screen.getByLabelText('Share service address')) })
+}
+
+/** State one saved address reports: `null` clears it, which also clears the effective address. */
+function savedRelayState(state: OwnerRelayState, relay: string | null): OwnerRelayState {
+  const { configured } = state
+  const base = configured === undefined ? {} : { configured }
+  return relay === null ? base : { ...base, override: relay, effective: relay }
+}
+
+async function showDialog(relay: RelayResponses = {}, defaultRelay = DOUBLE_RELAY): Promise<OwnerSharesDouble> {
+  const state: OwnerRelayState = relay.state
+    ?? { effective: DOUBLE_RELAY }
+  const host = ownerSharesDouble({
+    relay: async () => accepted(state),
+    setRelay: async request => accepted(relay.postBody ?? savedRelayState(state, request.relayUrl)),
+    // A host this case did not script answers nothing this page can read.
+    identity: async (request) => {
+      const identity = relay.identity
+      return identity === undefined
+        ? refused('gateway/internal', {})
+        : accepted(identity(request.relay ?? ''))
+    },
+    testRelay: async () => accepted(relay.connectivity ?? { ok: true, httpReachable: true, blocking: false }),
+    testPublish: async () => accepted(relay.permission ?? { ok: true, blocking: false }),
+  })
+  await act(async () => {
+    render(<LiveshareShareDialog
+      sessionId={'session' as SessionId}
+      sessionTitle="Session"
+      defaultRelay={defaultRelay}
+      shares={host.shares}
+      onClose={() => {}}
+      t={translate}
+    />)
+  })
+  return host
+}
+
+describe('Liveshare relay URL field', () => {
+  it('shows the effective relay address', async () => {
+    await showDialog({
+      state: {
+        override: 'https://override.example.test',
+        effective: 'https://override.example.test',
+      },
+    })
+
+    expect(screen.getByLabelText('Share service address')).toHaveProperty('value', 'https://override.example.test')
+  })
+
+  it('states that no address is set before the owner saves one', async () => {
+    const host = await showDialog({ state: {} }, '')
+
+    // A page that has no address to show says so in the field and in the address row, and starts the
+    // owner on the step that puts one in force; nothing is asked of the Host about an absent address.
+    const field = screen.getByLabelText('Share service address')
+    expect(field).toHaveProperty('value', '')
+    expect(field.getAttribute('placeholder')).toBe('No address set')
+    expect(screen.getByText(en['dialog.addressHint'])).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', true)
+    expect(callsOf(host, 'identity')).toHaveLength(0)
+  })
+
+  it('saves a new relay URL and reports success', async () => {
+    const host = await showDialog()
+    fireEvent.change(screen.getByLabelText('Share service address'), { target: { value: 'https://new.example.test' } })
+    await saveAddress()
+
+    expect(callsOf(host, 'setRelay')).toEqual([{ relayUrl: 'https://new.example.test' }])
+    // Saving and checking is one action: the save itself probes the address it put in force.
+    expect(callsOf(host, 'testRelay').length).toBeGreaterThan(0)
+    expect(screen.queryByRole('button', { name: 'Test connectivity' })).toBeNull()
+    expect(screen.queryByRole('button', { name: 'Save and check' })).toBeNull()
+    expect(screen.getByLabelText('Share service address')).toHaveProperty('value', 'https://new.example.test')
+  })
+
+  it('keeps the saved address in the field when the Host reports none back', async () => {
+    const host = await showDialog({ state: {}, postBody: {} }, '')
+    const field = screen.getByLabelText('Share service address')
+    fireEvent.change(field, { target: { value: 'https://new.example.test' } })
+    await saveAddress()
+
+    // The address the owner just saved is what the field states, even if the answer omits the field.
+    expect(field).toHaveProperty('value', 'https://new.example.test')
+    expect(callsOf(host, 'setRelay')).toEqual([{ relayUrl: 'https://new.example.test' }])
+  })
+
+  it('rejects an invalid relay URL without saving', async () => {
+    const host = await showDialog()
+    fireEvent.change(screen.getByLabelText('Share service address'), { target: { value: 'not-a-url' } })
+    await saveAddress()
+
+    expect(callsOf(host, 'setRelay')).toHaveLength(0)
+    expect(screen.getByRole('alert').textContent).toContain('starting with http:// or https://')
+  })
+
+  it('saves the address the owner fills in, with no action that restores a default', async () => {
+    const host = await showDialog({
+      state: {
+        override: 'https://override.example.test',
+        effective: 'https://override.example.test',
+      },
+    })
+    // The address is the owner's to type and save; nothing offers to clear it back to a default.
+    expect(screen.queryByRole('button', { name: 'Use default' })).toBeNull()
+
+    fireEvent.change(screen.getByLabelText('Share service address'), {
+      target: { value: 'https://configured.example.test' },
+    })
+    await saveAddress()
+
+    expect(callsOf(host, 'setRelay')).toEqual([{ relayUrl: 'https://configured.example.test' }])
+  })
+
+  it('puts the address before the sign-in action it gates', async () => {
+    await showDialog({ identity: relay => ({ state: 'unverified', relay }) })
+    const field = screen.getByLabelText('Share service address')
+    const verify = await screen.findByRole('button', { name: 'Sign in' })
+    // The owner sets the address first; the control that opens a sign-in at it comes after.
+    expect(field.compareDocumentPosition(verify) & Node.DOCUMENT_POSITION_FOLLOWING).toBeTruthy()
+  })
+
+  it('requires the address to be saved before it may be verified', async () => {
+    await showDialog({
+      identity: relay => ({ state: 'unverified', relay }),
+    })
+    // The saved address answers, so its own verification is the step the owner may act on.
+    const verify = await screen.findByRole('button', { name: 'Sign in' })
+    expect(verify).toHaveProperty('disabled', false)
+
+    fireEvent.change(screen.getByLabelText('Share service address'), { target: { value: 'https://new.example.test' } })
+    expect(screen.getByRole('button', { name: 'Sign in' })).toHaveProperty('disabled', true)
+    expect(screen.getByRole('button', { name: 'Sign in' }).getAttribute('title'))
+      .toBe(en['dialog.identity.verifyBlocked'])
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', true)
+    // Sign-in gates the share configuration: every choice below the address is unavailable, not just
+    // the create action.
+    expect(screen.getByRole('tab', { name: 'Read only' })).toHaveProperty('disabled', true)
+    expect(screen.getByRole('switch', { name: en['dialog.allowsFork'] })).toHaveProperty('disabled', true)
+    expect(screen.getByText(en['dialog.expiry.never'])).toBeDefined()
+    // The flow states the address step and why it blocks, rather than a reason this page invented.
+    expect(screen.getByRole('status').textContent).toBe('This address is not saved yet; save it to put it in force.')
+  })
+
+  it('lets verification resume once the saved address answers', async () => {
+    const host = await showDialog({
+      identity: relay => ({ state: 'unverified', relay }),
+      postBody: { effective: 'https://new.example.test' },
+    })
+    fireEvent.change(screen.getByLabelText('Share service address'), { target: { value: 'https://new.example.test' } })
+    await saveAddress()
+
+    // Saving puts the new address in force, asks whether it answers, and re-reads its identity.
+    expect(screen.getByLabelText('Share service address')).toHaveProperty('value', 'https://new.example.test')
+    await vi.waitFor(() => { expect(screen.getByRole('button', { name: 'Sign in' })).toHaveProperty('disabled', false) })
+    const identityReads = callsOf(host, 'identity').filter(argument =>
+      typeof argument === 'object' && argument !== null
+      && (argument as { readonly relay?: unknown }).relay === 'https://new.example.test')
+    expect(identityReads.length).toBeGreaterThan(0)
+  })
+
+  it('warns that a changed address has to be verified again before creating', async () => {
+    await showDialog({
+      identity: relay => ({ state: 'verified', relay, displayName: '许翰翔' }),
+      postBody: { effective: 'https://new.example.test' },
+    })
+    expect(await screen.findByText('许翰翔')).toBeDefined()
+    fireEvent.change(screen.getByLabelText('Share service address'), { target: { value: 'https://new.example.test' } })
+    await saveAddress()
+
+    // A credential belongs to the address that issued it, so the save states what happens next.
+    expect(screen.getByText(en['dialog.relayReverify'])).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Sign in again' })).toBeDefined()
+  })
+
+  it('withholds verification and creation while the address does not answer', async () => {
+    const error = 'https://relay.example.test: ECONNREFUSED: connect ECONNREFUSED 127.0.0.1:8443'
+    await showDialog({
+      identity: relay => ({ state: 'unverified', relay }),
+      connectivity: { ok: false, httpReachable: false, blocking: true, error },
+    })
+
+    // The Host's own diagnosis is printed unchanged, and the step it belongs to is the current one.
+    expect(await screen.findByText(error)).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Sign in' })).toHaveProperty('disabled', true)
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', true)
+    expect(screen.getByRole('button', { name: 'Create share' }).getAttribute('title')).toBe(error)
+  })
+
+  it('offers to verify again on the address in force for a verified owner', async () => {
+    await showDialog({
+      identity: relay => ({ state: 'verified', relay, displayName: '许翰翔' }),
+    })
+    expect(await screen.findByText('许翰翔')).toBeDefined()
+    expect(screen.getByRole('button', { name: 'Sign in again' })).toHaveProperty('disabled', false)
+    expect(screen.getByRole('tab', { name: 'Read only' })).toHaveProperty('disabled', false)
+    expect(screen.getByRole('switch', { name: en['dialog.allowsFork'] })).toHaveProperty('disabled', false)
+    expect(screen.getByRole('button', { name: 'Sign in again' })).toHaveProperty('disabled', false)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/share-relay-in-force.client.spec.tsx b/packages/experimental/liveshare/tests/share-relay-in-force.client.spec.tsx
new file mode 100644
index 0000000000..861da976b1
--- /dev/null
+++ b/packages/experimental/liveshare/tests/share-relay-in-force.client.spec.tsx
@@ -0,0 +1,233 @@
+// @vitest-environment jsdom
+/**
+ * The Relay address this dialog treats as in force, and what it may state about connectivity.
+ *
+ * The header action reads the address from the host in its own request and mounts this dialog before
+ * that answer lands, so the field starts empty and the header's answer only prefills it. An address is
+ * in force once this dialog's own `relay` read names it, and only then is the host asked whether it
+ * answers or the sign-in that would open there offered.
+ */
+
+import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { useState, type ReactNode } from 'react'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type {} from '../src/client/index.ts'
+import { LiveshareShareDialog, type LiveshareShareDialogProps } from '../src/client/ShareDialog.tsx'
+import { en } from '../src/client/locales.ts'
+import type {
+  OwnerIdentityStatus, OwnerRelayState, RelayConnectivityView,
+} from '../src/share-api-types.ts'
+import type { RemoteResult } from '@deepseek-ai/dsh-typert-protocol'
+import {
+  accepted, DOUBLE_RELAY, ownerSharesDouble, requestOf, type OwnerSharesDouble,
+} from './owner-shares-double.client.ts'
+
+afterEach(() => {
+  cleanup()
+  vi.unstubAllGlobals()
+})
+
+const translate: LiveshareShareDialogProps['t'] = (key, params) => {
+  let result: string = (en as Readonly<Record<string, string>>)[key] ?? key
+  for (const [name, value] of Object.entries(params ?? {})) result = result.replace(`{${name}}`, String(value))
+  return result
+}
+
+/** The address this deployment's host names, and the one the account is verified on. */
+const RELAY = DOUBLE_RELAY
+const OTHER = 'https://other.example.test'
+const UNSAVED = 'This address is not saved yet; save it to put it in force.'
+const UNREACHABLE = 'Cannot reach the DSH Liveshare share service.'
+
+type MaybeAsync<T> = T | Promise<T>
+
+interface DialogOptions {
+  /** The address the header action already read; it prefills the field but names nothing in force. */
+  readonly defaultRelay?: string
+  /** The host's own `relay` answer, or a promise that never settles while the dialog is open. */
+  readonly relay?: MaybeAsync<RemoteResult<OwnerRelayState>>
+  /** What the host answers a save with; the default keeps the address in force. */
+  readonly relayPost?: OwnerRelayState
+  /** The connectivity check's answer, or a promise the case settles itself. */
+  readonly connectivity?: MaybeAsync<RelayConnectivityView>
+  readonly identity?: OwnerIdentityStatus
+}
+
+/** One dialog mounted over a scripted Remote, with the address its host named, or none yet. */
+async function showDialog(options: DialogOptions = {}): Promise<OwnerSharesDouble> {
+  const host = installShares(options)
+  await act(async () => {
+    render(<LiveshareShareDialog
+      sessionId={'session' as SessionId}
+      sessionTitle="Relay address session"
+      defaultRelay={options.defaultRelay ?? ''}
+      shares={host.shares}
+      onClose={() => {}}
+      t={translate}
+    />)
+  })
+  return host
+}
+
+/**
+ * Render the dialog behind a parent that names the address, as the header action does.
+ *
+ * The action mounts this dialog with no address and re-renders it once its own read answers, so the
+ * dialog's field is already mounted when the address arrives; this harness is that order.
+ * @returns The scripted Remote and the setter that stands in for the action's answer.
+ */
+async function showDialogBeforeAddressArrives(options: DialogOptions = {}): Promise<{
+  readonly host: OwnerSharesDouble
+  readonly announce: (relay: string) => Promise<void>
+}> {
+  const host = installShares(options)
+  let announce!: (relay: string) => void
+  const shares = host.shares
+  await act(async () => {
+    render(<AddressSource shares={shares} onRender={(set) => { announce = set }} />)
+  })
+  return {
+    host,
+    announce: async (relay) => { await act(async () => { announce(relay) }) },
+  }
+}
+
+/** A parent that decides the dialog's address prop, like the header action's own read does. */
+function AddressSource({ shares, onRender }: {
+  readonly shares: OwnerSharesDouble['shares']
+  readonly onRender: (set: (relay: string) => void) => void
+}): ReactNode {
+  const [relay, setRelay] = useState('')
+  // Handing the setter out during render keeps this harness free of effect ordering of its own.
+  onRender(setRelay)
+  return <LiveshareShareDialog
+    sessionId={'session' as SessionId}
+    sessionTitle="Relay address session"
+    defaultRelay={relay}
+    shares={shares}
+    onClose={() => {}}
+    t={translate}
+  />
+}
+
+/** Script the share-management Remote with the answers one case needs. */
+function installShares(options: DialogOptions): OwnerSharesDouble {
+  const inForce = { override: RELAY, effective: RELAY }
+  return ownerSharesDouble({
+    relay: async () => await (options.relay ?? accepted(inForce)),
+    setRelay: async request => accepted(options.relayPost
+      ?? { override: request.relayUrl ?? RELAY, effective: request.relayUrl ?? RELAY }),
+    identity: async () => accepted(options.identity
+      ?? { state: 'verified', relay: RELAY, displayName: 'Owner' }),
+    testPublish: async () => accepted({ ok: true, blocking: false }),
+    testRelay: async () => accepted(await (options.connectivity ?? { ok: true, httpReachable: true, blocking: false })),
+  })
+}
+
+/** How many connectivity checks this dialog sent to its own host. */
+function probes(host: OwnerSharesDouble): number {
+  return host.calls.filter(call => call.method === 'testRelay').length
+}
+
+/** Save the field by leaving it, which is the dialog's only save action. */
+async function saveAddress(): Promise<void> {
+  await act(async () => { fireEvent.blur(screen.getByLabelText('Share service address')) })
+}
+
+/** The address field's text. */
+function address(): string {
+  return screen.getByLabelText('Share service address').getAttribute('value') ?? ''
+}
+
+describe('the Relay address the dialog treats as in force', () => {
+  it('asks its host instead of reporting a failure it never probed', async () => {
+    // The header action has not answered yet, and this dialog's own read is the only address source.
+    const host = await showDialog({ defaultRelay: '' })
+    await vi.waitFor(() => { expect(probes(host)).toBe(1) })
+
+    expect(address()).toBe(RELAY)
+    expect(screen.queryByText(UNSAVED)).toBeNull()
+    expect(screen.queryByText(UNREACHABLE)).toBeNull()
+    // The host named this address, so the flow is past the address step and creation is not blocked.
+    await vi.waitFor(() => { expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', false) })
+  })
+
+  it('treats an address only the header action named as a prefill, not as one in force', async () => {
+    // The action's read is the only answer: this host's own `relay` read never returns in this case.
+    const { host, announce } = await showDialogBeforeAddressArrives({
+      relay: new Promise<RemoteResult<OwnerRelayState>>(() => { /* stays open for this case */ }),
+    })
+    expect(address()).toBe('')
+
+    await announce(RELAY)
+    expect(address()).toBe(RELAY)
+    expect(screen.queryByText(UNSAVED)).toBeNull()
+    // The host has not named the address, so the flow stays on the address step: nothing asks the host
+    // about it, and the sign-in that would open there is withheld rather than offered on a prefill.
+    expect(probes(host)).toBe(0)
+    expect(screen.getByTitle(en['dialog.identity.verifyBlocked']))
+      .toHaveProperty('disabled', true)
+
+    // Saving it is what puts it in force, and the flow then asks about it and offers the sign-in.
+    await saveAddress()
+    expect(requestOf(host.calls, 'setRelay')).toEqual({ relayUrl: RELAY })
+    await vi.waitFor(() => { expect(probes(host)).toBe(1) })
+    await vi.waitFor(() => {
+      expect(screen.getByRole('button', { name: 'Sign in again' })).toHaveProperty('disabled', false)
+    })
+    expect(screen.queryByText(UNREACHABLE)).toBeNull()
+  })
+
+  it('requires a save only for an address the owner changed, and asks about it only after that save', async () => {
+    const host = await showDialog({ relayPost: { override: OTHER, effective: OTHER } })
+    await vi.waitFor(() => { expect(probes(host)).toBe(1) })
+
+    fireEvent.change(screen.getByLabelText('Share service address'), { target: { value: OTHER } })
+    expect(screen.getByRole('status').textContent).toBe(UNSAVED)
+    expect(screen.getByRole('button', { name: 'Create share' })).toHaveProperty('disabled', true)
+    // The unsaved address is not probed: this host would ask about its own address, not the draft.
+    expect(probes(host)).toBe(1)
+
+    await saveAddress()
+    await vi.waitFor(() => { expect(address()).toBe(OTHER) })
+    expect(screen.queryByText(UNSAVED)).toBeNull()
+    await vi.waitFor(() => { expect(probes(host)).toBe(2) })
+  })
+
+  it('treats an address typed back to the one in force as saved, before and after saving it again', async () => {
+    const host = await showDialog()
+    await vi.waitFor(() => { expect(probes(host)).toBe(1) })
+
+    fireEvent.change(screen.getByLabelText('Share service address'), { target: { value: OTHER } })
+    expect(screen.getByRole('status').textContent).toBe(UNSAVED)
+    fireEvent.change(screen.getByLabelText('Share service address'), { target: { value: RELAY } })
+    // Equal to the address in force, whatever its source, so nothing is left to save.
+    expect(screen.queryByText(UNSAVED)).toBeNull()
+
+    await saveAddress()
+    // Leaving the field after typing the address in force back changes nothing, so no save is sent.
+    expect(requestOf(host.calls, 'setRelay')).toBeUndefined()
+    expect(screen.queryByText(UNSAVED)).toBeNull()
+    expect(address()).toBe(RELAY)
+  })
+
+  it('states the host\u2019s own connectivity answer only after a probe returns it', async () => {
+    const probe = Promise.withResolvers<RelayConnectivityView>()
+    const host = await showDialog({ connectivity: probe.promise })
+    const error = 'https://relay.example.test: ECONNREFUSED: connect ECONNREFUSED 127.0.0.1:8443'
+    await vi.waitFor(() => { expect(probes(host)).toBe(1) })
+
+    // The probe is in flight, which is not a failure: the step states what it is doing.
+    expect(screen.getByText('Testing whether the share service address answers…')).toBeDefined()
+    expect(screen.queryByText(UNREACHABLE)).toBeNull()
+    expect(screen.queryByText(error)).toBeNull()
+
+    await act(async () => {
+      probe.resolve({ ok: false, httpReachable: false, blocking: true, error })
+    })
+    // The host's own diagnosis is printed unchanged; re-saving the address is what probes it again.
+    expect(screen.getByText(error)).toBeDefined()
+    expect(screen.queryByRole('button', { name: 'Save and check' })).toBeNull()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/share-restore-credential.host.spec.ts b/packages/experimental/liveshare/tests/share-restore-credential.host.spec.ts
new file mode 100644
index 0000000000..855a6af3bd
--- /dev/null
+++ b/packages/experimental/liveshare/tests/share-restore-credential.host.spec.ts
@@ -0,0 +1,261 @@
+/**
+ * What a share this host already holds presents when it reconnects, and how it comes back.
+ *
+ * The owner's design is that a restart or a reconnect restores every link the host still holds,
+ * whatever the state of the owner's sign-in, and that the sign-in decides only whether a *new* share
+ * may be published. Two host decisions carry that: a restore registers on the share's own management
+ * token and hands the Relay the credential this host stores for that address rather than withholding
+ * it on the host's own expiry read, and a credential that becomes usable again registers the shares a
+ * refusal left offline instead of waiting for a restart.
+ */
+
+import { createServer } from 'node:http'
+import type { AddressInfo } from 'node:net'
+import { mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { Context } from '@deepseek-ai/cordis'
+import { WebSocketServer } from 'ws'
+import { afterEach, describe, expect, it } from 'vitest'
+import { apply, type Config } from '../src/host/share-host.ts'
+import type {} from '../src/index.ts'
+
+const SHARE_ID = 'restored-share'
+const SESSION_ID = 'restored-session'
+/** Management token the share's own record carries, which is what a reconnect is authorized by. */
+const GATEWAY_TOKEN = 'restored-gateway-token'
+/** Credential the host stores for the address; its own `expiresAt` read says it is past. */
+const STORED_TOKEN = 'stored-payload.stored-signature'
+/** Credential a completed verification stores, which is the one the Relay then accepts. */
+const RENEWED_TOKEN = 'renewed-payload.renewed-signature'
+const PAST = new Date(Date.parse('2026-01-01T00:00:00.000Z')).toISOString()
+
+/** One gateway upgrade the stand-in received, with the headers the owner's worker sent. */
+interface GatewayUpgrade {
+  readonly shareId: string
+  readonly authorization: string | undefined
+  readonly credential: string | undefined
+  readonly search: URLSearchParams
+}
+
+interface RelayStandIn {
+  readonly origin: string
+  readonly upgrades: GatewayUpgrade[]
+  readonly close: () => Promise<void>
+}
+
+interface OwnerRoutes {
+  readonly routes: Map<string, (request: Request) => Promise<Response>>
+  readonly host: Context
+}
+
+/** Temporary state directories this spec created, removed once every host is stopped. */
+const temporaryRoots: string[] = []
+/** Owner hosts this spec started, stopped before their Relay so no socket outlives the fixture. */
+const disposers: Array<() => Promise<void>> = []
+
+afterEach(async () => {
+  for (const dispose of disposers.splice(0).reverse()) await dispose()
+  for (const root of temporaryRoots.splice(0)) rmSync(root, { recursive: true, force: true })
+})
+
+/**
+ * One owner host whose Cordis service lookups are the test's own fakes.
+ * @returns The registered owner routes and the host context.
+ */
+function ownerRoutes(): OwnerRoutes {
+  const routes = new Map<string, (request: Request) => Promise<Response>>()
+  const host = Object.assign(new Context(), {
+    connection: {
+      fetch: {
+        register: (route: { readonly path: string; readonly fetch: (request: Request) => Promise<Response> }) => {
+          routes.set(route.path, route.fetch)
+          return Promise.resolve(async () => {})
+        },
+      },
+    },
+  })
+  return { routes, host }
+}
+
+/** A temporary state directory holding the owner's state file and the credential beside it. */
+function stateDirectory(): string {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-restore-credential-'))
+  temporaryRoots.push(directory)
+  return directory
+}
+
+/** One stored share record, with the management token a reconnect presents. */
+function ownerStateFile(directory: string, relay: string): string {
+  const file = join(directory, 'owner-shares.json')
+  writeFileSync(file, JSON.stringify({
+    instanceId: 'restore-credential-instance',
+    relayUrl: relay,
+    shares: [{
+      relay,
+      shareId: SHARE_ID,
+      sessionId: SESSION_ID,
+      sessionTitle: 'Restored session',
+      accessMode: 'open',
+      gatewayToken: GATEWAY_TOKEN,
+      allowedSubjectIds: [],
+      createdAt: '2026-09-01T00:00:00.000Z',
+      sessionMode: 'view',
+    }],
+  }))
+  return file
+}
+
+/** One stored credential whose own signed expiry this host reads as past. */
+function expiredCredentialFile(directory: string, relay: string): string {
+  const file = join(directory, 'owner-credential.json')
+  writeFileSync(file, JSON.stringify({ relay, credential: STORED_TOKEN, expiresAt: PAST, subjectId: 'owner' }))
+  return file
+}
+
+/**
+ * Start a Relay stand-in that speaks the two HTTP routes the host asks and one gateway upgrade.
+ *
+ * The upgrade is accepted only when `accepts` says so, and a refusal is answered with the HTTP status
+ * the real Relay uses for a first publish it will not admit — the same answer the owner's gateway
+ * worker treats as a decision about that registration rather than as a transient failure.
+ * @param accepts Whether the credential one upgrade presented is admitted.
+ * @returns The stand-in origin, every upgrade it saw, and its disposer.
+ */
+async function relayStandIn(accepts: (credential: string | undefined) => boolean): Promise<RelayStandIn> {
+  const upgrades: GatewayUpgrade[] = []
+  const wss = new WebSocketServer({ noServer: true })
+  const server = createServer((req, res) => {
+    const path = new URL(req.url ?? '/', 'http://relay.local').pathname
+    if (path === '/__liveshare/share/claim') {
+      res.writeHead(200, { 'content-type': 'application/json' })
+      res.end(JSON.stringify({ shareId: SHARE_ID, ownerVerified: true, claimed: true }))
+      return
+    }
+    if (path === '/__liveshare/owner-credential') {
+      res.writeHead(200, { 'content-type': 'application/json' })
+      res.end(JSON.stringify({ supported: true }))
+      return
+    }
+    res.writeHead(404, { 'content-type': 'application/json' })
+    res.end('{"error":"not-found"}')
+  })
+  server.on('upgrade', (request, socket, head) => {
+    const url = new URL(request.url ?? '/', 'http://relay.local')
+    const header = request.headers['x-liveshare-owner-credential']
+    const credential = Array.isArray(header) ? header[0] : header
+    upgrades.push({
+      shareId: url.searchParams.get('shareId') ?? '',
+      authorization: request.headers.authorization,
+      credential,
+      search: url.searchParams,
+    })
+    if (!accepts(credential)) {
+      const body = 'owner credential required'
+      socket.end([
+        'HTTP/1.1 401 Unauthorized',
+        'content-type: text/plain; charset=utf-8',
+        `content-length: ${String(Buffer.byteLength(body))}`,
+        'connection: close',
+        '',
+        body,
+      ].join('\r\n'))
+      return
+    }
+    wss.handleUpgrade(request, socket, head, (gateway) => { wss.emit('connection', gateway, request) })
+  })
+  await new Promise<void>((resolve) => { server.listen(0, '127.0.0.1', resolve) })
+  const { port } = server.address() as AddressInfo
+  return {
+    origin: `http://127.0.0.1:${String(port)}`,
+    upgrades,
+    close: async () => {
+      for (const client of wss.clients) client.terminate()
+      wss.close()
+      await new Promise<void>((resolve) => { server.close(() => { resolve() }) })
+    },
+  }
+}
+
+/** The owner's own list of shares, as its management page reads it. */
+async function listedShares(host: Context): Promise<readonly { shareId: string; online: boolean }[]> {
+  return (await host.liveshareShares.list()).shares
+}
+
+/** The credential state this host reports for one Relay address. */
+async function identityState(host: Context, relay: string): Promise<string> {
+  return (await host.liveshareShares.identity({ relay })).state
+}
+
+describe('restoring a share with a credential this host reads as expired', () => {
+  it('registers on the share management token, presents the stored credential, and comes online', async () => {
+    const relay = await relayStandIn(() => true)
+    const directory = stateDirectory()
+    const { host } = ownerRoutes()
+    const dispose = await apply(host, {
+      ownerStateFile: ownerStateFile(directory, relay.origin),
+      ownerCredentialFile: expiredCredentialFile(directory, relay.origin),
+    } satisfies Config)
+    disposers.push(async () => { await dispose(); await relay.close() })
+
+    await expect.poll(() => relay.upgrades.length, { timeout: 20_000 }).toBe(1)
+    expect(relay.upgrades[0]).toMatchObject({
+      shareId: SHARE_ID,
+      // The share's own management token is what authorizes this registration; the credential is
+      // what the Relay judges the owner's sign-in by, and both travel together.
+      authorization: `Bearer ${GATEWAY_TOKEN}`,
+      credential: STORED_TOKEN,
+    })
+    // The host's own read of the sign-in says it is past, which is what used to withhold the header.
+    expect(await identityState(host, relay.origin)).toBe('expired')
+    await expect.poll(async () => (await listedShares(host))[0]?.online, { timeout: 15_000 }).toBe(true)
+  }, 30_000)
+
+  it('keeps a refused share and registers it again once a credential arrives', async () => {
+    const relay = await relayStandIn(credential => credential === RENEWED_TOKEN)
+    const directory = stateDirectory()
+    const stateFile = ownerStateFile(directory, relay.origin)
+    const { routes, host } = ownerRoutes()
+    const dispose = await apply(host, {
+      ownerStateFile: stateFile,
+      // No credential for this address yet: the first registration is one the Relay must refuse.
+      ownerCredentialFile: join(directory, 'owner-credential.json'),
+    } satisfies Config)
+    disposers.push(async () => { await dispose(); await relay.close() })
+
+    await expect.poll(() => relay.upgrades.length, { timeout: 20_000 }).toBe(1)
+    expect(relay.upgrades[0]?.credential).toBeUndefined()
+    // A refusal is a decision about this registration, so the worker does not retry it by itself:
+    // the settle covers several of its reconnect delays, in which a retry would have appeared.
+    await expect.poll(
+      async () => (await listedShares(host))[0]?.online,
+      { timeout: 15_000 },
+    ).toBe(false)
+    await new Promise((resolve) => { setTimeout(resolve, 1_500) })
+    expect(relay.upgrades).toHaveLength(1)
+    // The refused share is remembered: the owner still sees it, and its record is still on disk.
+    expect((await listedShares(host)).map(share => share.shareId)).toEqual([SHARE_ID])
+    const persisted = JSON.parse(readFileSync(stateFile, 'utf8')) as { shares: readonly { shareId: string }[] }
+    expect(persisted.shares.map(share => share.shareId)).toEqual([SHARE_ID])
+
+    // The owner verifies at this address. The host stores the credential and must register the share
+    // it refused again, without the owner restarting anything.
+    const imported = await routes.get('/api/liveshare.ownerCredential')?.(new Request(
+      'http://owner.local/api/liveshare.ownerCredential',
+      {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({ credential: RENEWED_TOKEN }),
+      },
+    ))
+    expect(imported?.status).toBe(200)
+
+    await expect.poll(() => relay.upgrades.length, { timeout: 20_000 }).toBe(2)
+    expect(relay.upgrades[1]).toMatchObject({
+      shareId: SHARE_ID,
+      authorization: `Bearer ${GATEWAY_TOKEN}`,
+      credential: RENEWED_TOKEN,
+    })
+    await expect.poll(async () => (await listedShares(host))[0]?.online, { timeout: 15_000 }).toBe(true)
+  }, 40_000)
+})
diff --git a/packages/experimental/liveshare/tests/share-title.spec.ts b/packages/experimental/liveshare/tests/share-title.spec.ts
new file mode 100644
index 0000000000..c37e01a14f
--- /dev/null
+++ b/packages/experimental/liveshare/tests/share-title.spec.ts
@@ -0,0 +1,18 @@
+/** A renamed Session must reach the share's recorded title, and nothing else must change it. */
+
+import { describe, expect, it } from 'vitest'
+import { refreshedShareTitle } from '../src/host/share-host.ts'
+
+describe('Liveshare share title refresh', () => {
+  it('adopts the Session title the title fold reports', () => {
+    expect(refreshedShareTitle('Local loop', 'This is a long-running objective:'))
+      .toBe('This is a long-running objective:')
+  })
+
+  it('keeps the recorded title when the Session reports the same one or none', () => {
+    expect(refreshedShareTitle('Local loop', 'Local loop')).toBeUndefined()
+    expect(refreshedShareTitle('Local loop', undefined)).toBeUndefined()
+    expect(refreshedShareTitle('Local loop', '')).toBeUndefined()
+    expect(refreshedShareTitle('Local loop', 42)).toBeUndefined()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/share-types.client.spec.ts b/packages/experimental/liveshare/tests/share-types.client.spec.ts
new file mode 100644
index 0000000000..ad24146e58
--- /dev/null
+++ b/packages/experimental/liveshare/tests/share-types.client.spec.ts
@@ -0,0 +1,49 @@
+/** The client reader for share access and endpoint offers: only a complete record becomes presentable. */
+
+import { describe, expect, it } from 'vitest'
+import { readAccess, readCapabilityGroups } from '../src/client/share-types.ts'
+
+describe('confirmed share access', () => {
+  it('summarizes the mode and both subject counts', () => {
+    expect(readAccess({
+      mode: 'selected',
+      selected: [{ subjectId: 'a' }, { subjectId: 'b' }],
+      deploymentAllowedSubjectIds: ['c'],
+    })).toEqual({ mode: 'selected', selectedCount: 2, deploymentCount: 1 })
+    expect(readAccess({ mode: 'open', selected: [], deploymentAllowedSubjectIds: [] }))
+      .toEqual({ mode: 'open', selectedCount: 0, deploymentCount: 0 })
+  })
+
+  it('reads nothing as confirmed from a value that is not an access record', () => {
+    for (const refused of [undefined, null, 'selected', 3]) expect(readAccess(refused)).toBeUndefined()
+    // A legacy record states no mode; a malformed one states a mode this build cannot confirm.
+    expect(readAccess({})).toBeUndefined()
+    expect(readAccess({ mode: 'everyone', selected: [], deploymentAllowedSubjectIds: [] })).toBeUndefined()
+    expect(readAccess({ mode: 'open', selected: [], deploymentAllowedSubjectIds: 'all' })).toBeUndefined()
+  })
+})
+
+describe('viewer endpoint offers', () => {
+  it('reads one plugin entry with both endpoint lists', () => {
+    expect(readCapabilityGroups([{ plugin: 'ui-chat', readable: ['session/list'], writable: [] }]))
+      .toEqual([{ plugin: 'ui-chat', readable: ['session/list'], writable: [] }])
+  })
+
+  it('leaves out every entry this build cannot present, keeping the readable ones in order', () => {
+    expect(readCapabilityGroups([
+      // A value that names no plugin, and one whose plugin name is empty.
+      { readable: ['session/list'], writable: [] },
+      { plugin: '', readable: [], writable: [] },
+      // One missing list, and one list holding a non-string entry.
+      { plugin: 'no-writable', readable: ['session/list'] },
+      { plugin: 'bad-entry', readable: ['session/list', 3], writable: [] },
+      { plugin: 'ui-chat', readable: [], writable: ['session/prompt'] },
+    ])).toEqual([{ plugin: 'ui-chat', readable: [], writable: ['session/prompt'] }])
+  })
+
+  it('reads no offer at all from a host that reports none', () => {
+    for (const empty of [undefined, null, 'ui-chat', 3]) expect(readCapabilityGroups(empty)).toEqual([])
+    // Null entries in an otherwise readable array name no group either.
+    expect(readCapabilityGroups([null, 'ui-chat'])).toEqual([])
+  })
+})
diff --git a/packages/experimental/liveshare/tests/shared-tools.spec.ts b/packages/experimental/liveshare/tests/shared-tools.spec.ts
new file mode 100644
index 0000000000..32f5c1bf10
--- /dev/null
+++ b/packages/experimental/liveshare/tests/shared-tools.spec.ts
@@ -0,0 +1,119 @@
+/** The one table the source sandbox and a fork child's limit both admit tools from. */
+
+import { describe, expect, it } from 'vitest'
+import {
+  SHARED_TOOL_PROFILES,
+  describeSharedTool,
+  sharedToolNames,
+  sharedToolProfile,
+  withDefaultSearchRoot,
+} from '../src/host/shared-tools.ts'
+
+describe('shared tool surface', () => {
+  it('admits the view surface at both tiers and the two mutation tools only at write', () => {
+    expect(sharedToolNames('view')).toEqual([
+      'read', 'read_image', 'glob', 'grep', 'present', 'todo_write', 'skill', 'web_search', 'web_fetch',
+    ])
+    expect(sharedToolNames('write')).toEqual([...sharedToolNames('view'), 'edit', 'write'])
+    expect(sharedToolProfile('read')).toMatchObject({ tier: 'view', noFileEffect: false })
+    expect(sharedToolProfile('glob')).toMatchObject({ defaultsToWorkspace: true })
+    expect(sharedToolProfile('todo_write')).toMatchObject({ noFileEffect: true, defaultsToWorkspace: false })
+    expect(sharedToolProfile('edit')).toMatchObject({ tier: 'write' })
+    expect(sharedToolProfile('bash')).toBeUndefined()
+    expect(sharedToolProfile('ghost')).toBeUndefined()
+    // Every entry names itself once, so a duplicated name cannot shadow another definition.
+    const names = SHARED_TOOL_PROFILES.map(profile => profile.name)
+    expect(new Set(names).size).toBe(names.length)
+  })
+
+  it('reads a named file’s path from each tool that takes one', () => {
+    for (const name of ['read', 'read_image', 'edit', 'write']) {
+      const profile = sharedToolProfile(name)
+      if (profile === undefined) throw new Error(`no profile for ${name}`)
+      const call = profile.call({ file_path: 'a.ts', other: 1 })
+      expect(call?.paths).toEqual(['a.ts'])
+      expect(call?.rewrite(['/granted/a.ts'])).toEqual({ file_path: '/granted/a.ts', other: 1 })
+      expect(profile.call({ file_path: '' })).toBeUndefined()
+      expect(profile.call({ file_path: 2 })).toBeUndefined()
+      expect(profile.call({})).toBeUndefined()
+    }
+  })
+
+  it('reads a search root and keeps the pathless default distinguishable', () => {
+    for (const name of ['glob', 'grep']) {
+      const profile = sharedToolProfile(name)
+      if (profile === undefined) throw new Error(`no profile for ${name}`)
+      // A call with no path names none, and the replacement supplies the workspace.
+      expect(profile.call({ pattern: 'x' })?.paths).toEqual([])
+      expect(profile.call({ pattern: 'x' })?.rewrite(['/granted'])).toEqual({ pattern: 'x', path: '/granted' })
+      expect(profile.call({ pattern: 'x', path: 'src' })?.paths).toEqual(['src'])
+      expect(profile.call({ pattern: 'x', path: 'src' })?.rewrite(['/granted/src']))
+        .toEqual({ pattern: 'x', path: '/granted/src' })
+      // An empty or unreadable path cannot establish a root, so the guard refuses the call.
+      expect(profile.call({ pattern: 'x', path: '' })).toBeUndefined()
+      expect(profile.call({ pattern: 'x', path: 2 })).toBeUndefined()
+    }
+  })
+
+  it('reads every path a delivery names, preserving each entry’s other fields', () => {
+    const profile = sharedToolProfile('present')
+    if (profile === undefined) throw new Error('no present profile')
+    const call = profile.call({
+      files: [{ path: 'a.ts', description: 'A' }, { path: 'b.ts' }],
+      extra: true,
+    })
+    expect(call?.paths).toEqual(['a.ts', 'b.ts'])
+    expect(call?.rewrite(['/granted/a.ts', '/granted/b.ts'])).toEqual({
+      files: [{ path: '/granted/a.ts', description: 'A' }, { path: '/granted/b.ts' }],
+      extra: true,
+    })
+    expect(profile.call({ files: [] })?.paths).toEqual([])
+    expect(profile.call({ files: 'not a list' })).toBeUndefined()
+    expect(profile.call({ files: ['not a record'] })).toBeUndefined()
+    expect(profile.call({ files: [{ description: 'no path' }] })).toBeUndefined()
+    expect(profile.call({ files: [{ path: '' }] })).toBeUndefined()
+    expect(profile.call({ files: [{ path: 2 }] })).toBeUndefined()
+  })
+
+  it('declares the tools that touch no workspace file and leaves their arguments alone', () => {
+    for (const name of ['todo_write', 'skill', 'web_search', 'web_fetch']) {
+      const profile = sharedToolProfile(name)
+      if (profile === undefined) throw new Error(`no profile for ${name}`)
+      expect(profile.noFileEffect).toBe(true)
+      const args = { value: name }
+      const call = profile.call(args)
+      expect(call?.paths).toEqual([])
+      expect(call?.rewrite([])).toBe(args)
+    }
+  })
+
+  it('describes one call for the guard from the tool’s own arguments', () => {
+    expect(describeSharedTool('read', { file_path: 'a.ts' })).toEqual({ paths: ['a.ts'], noFileEffect: false })
+    expect(describeSharedTool('glob', { pattern: 'x' })).toEqual({ paths: [], noFileEffect: false })
+    expect(describeSharedTool('grep', { pattern: 'x', path: 'src' })).toEqual({ paths: ['src'], noFileEffect: false })
+    expect(describeSharedTool('todo_write', undefined)).toEqual({ paths: [], noFileEffect: true })
+    expect(describeSharedTool('read', 'not a record')).toEqual({ paths: undefined, noFileEffect: false })
+    expect(describeSharedTool('read', {})).toEqual({ paths: undefined, noFileEffect: false })
+    expect(describeSharedTool('bash', { command: 'ls' })).toEqual({ paths: undefined, noFileEffect: false })
+  })
+
+  it('substitutes the workspace only where the tool searches it by default', () => {
+    expect(withDefaultSearchRoot({ paths: [], noFileEffect: false }, 'glob', '/granted'))
+      .toEqual({ paths: ['/granted'], noFileEffect: false })
+    expect(withDefaultSearchRoot({ paths: [], noFileEffect: false }, 'grep', '/granted'))
+      .toEqual({ paths: ['/granted'], noFileEffect: false })
+    // A named root is already the path the replacement checks.
+    expect(withDefaultSearchRoot({ paths: ['src'], noFileEffect: false }, 'glob', '/granted'))
+      .toEqual({ paths: ['src'], noFileEffect: false })
+    // Undefined stays undefined: the arguments name no path this host can establish.
+    expect(withDefaultSearchRoot({ paths: undefined, noFileEffect: false }, 'glob', '/granted'))
+      .toEqual({ paths: undefined, noFileEffect: false })
+    // A tool that does not default to the workspace keeps its empty set, which the guard refuses.
+    expect(withDefaultSearchRoot({ paths: [], noFileEffect: false }, 'read', '/granted'))
+      .toEqual({ paths: [], noFileEffect: false })
+    expect(withDefaultSearchRoot({ paths: [], noFileEffect: true }, 'todo_write', '/granted'))
+      .toEqual({ paths: [], noFileEffect: true })
+    expect(withDefaultSearchRoot({ paths: [], noFileEffect: false }, 'bash', '/granted'))
+      .toEqual({ paths: [], noFileEffect: false })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/source-access-lifetime.spec.ts b/packages/experimental/liveshare/tests/source-access-lifetime.spec.ts
new file mode 100644
index 0000000000..7377dd7815
--- /dev/null
+++ b/packages/experimental/liveshare/tests/source-access-lifetime.spec.ts
@@ -0,0 +1,127 @@
+/** A source limit installed on a live Agent cannot authorize a later Agent generation. */
+import { Context } from '@deepseek-ai/cordis'
+import { Peer } from '@deepseek-ai/dsh-client-connection'
+import { randomUUID } from 'node:crypto'
+import { createScope } from '@deepseek-ai/dsh-scope'
+import { Session, SessionId, SESSION_FORMAT_VERSION } from '@deepseek-ai/dsh-session'
+import { mkdirSync, mkdtempSync, realpathSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import type {} from '../src/index.ts'
+import { apply } from '../src/host/share-host.ts'
+import { SHARED_TOOL_PROFILES } from '../src/host/shared-tools.ts'
+import type { TunnelRegistrationToken, TunnelWorkerEvent } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { TunnelWorkerInput } from '../src/host/tunnel-worker.ts'
+
+const worker = vi.hoisted(() => ({ event: undefined as ((event: TunnelWorkerEvent) => void) | undefined }))
+vi.mock('../src/host/tunnel-worker.ts', () => ({ TunnelWorker: class {
+  start() {}
+  onEvent(event: (event: TunnelWorkerEvent) => void) { worker.event = event; return () => { worker.event = undefined } }
+  send(_command: TunnelWorkerInput) {}
+  stop() { return Promise.resolve() }
+} }))
+
+/** Replacements one layer installs at each tier; no-effect tools keep the deployment's own. */
+const VIEW_SURFACE = SHARED_TOOL_PROFILES.filter(profile => profile.tier === 'view' && !profile.noFileEffect).length
+const WRITE_SURFACE = SHARED_TOOL_PROFILES.filter(profile => !profile.noFileEffect).length
+
+describe('source access lifetime', () => {
+  it('reinstalls source limits and cancels pending input when the share mode narrows', async () => {
+    const temporary = realpathSync(mkdtempSync(join(tmpdir(), 'liveshare-source-lifetime-')))
+    onTestFinished(() => { rmSync(temporary, { recursive: true, force: true }) })
+    const root = join(temporary, 'workspace')
+    mkdirSync(root)
+    const state = join(temporary, 'owner.json')
+    writeFileSync(state, JSON.stringify({ instanceId: 'owner', relayUrl: 'https://relay.invalid', shares: [{ relay: 'https://relay.invalid',
+      shareId: 'share', sessionId: 'source', sessionTitle: 'Source', accessMode: 'open',
+      gatewayToken: 'token', allowedSubjectIds: [], createdAt: '2026-10-08T00:00:00Z',
+      sessionMode: 'view',
+    }] }))
+    const ctx = new Context()
+    onTestFinished(() => ctx.fiber.dispose())
+    const routes = new Map<string, (request: Request) => Promise<Response>>()
+    const session = Session.create(SessionId('source'), [], {
+      version: SESSION_FORMAT_VERSION, id: SessionId('source'), cwd: root, createdAt: 0, isSeeded: false,
+    })
+    let registrations = 0
+    const dispatchEntered = Promise.withResolvers<undefined>()
+    const dispatchReleased = Promise.withResolvers<undefined>()
+    const dispatchSettled = Promise.withResolvers<undefined>()
+    onTestFinished(() => { dispatchReleased.resolve(undefined) })
+    let dispatched = 0
+    const createSharedFetchHandler = () => ({ fetch: async (request: Request) => {
+      dispatchEntered.resolve(undefined)
+      try {
+        await dispatchReleased.promise
+        request.signal.throwIfAborted()
+        dispatched += 1
+        return Response.json({ result: { ok: true, value: { accepted: true } } })
+      } finally {
+        dispatchSettled.resolve(undefined)
+      }
+    } })
+    ctx.provide('connection', { createSharedFetchHandler, createPeer: (options: ConstructorParameters<typeof Peer>[1]) => new Peer(ctx, options), fetch: { register: (route: {
+      path: string
+      fetch: (request: Request) => Promise<Response>
+    }) => {
+      routes.set(route.path, route.fetch)
+      return () => { routes.delete(route.path) }
+    } } } as never)
+    const tools = {
+      get: () => ({ execute: () => Promise.resolve({ path: root }), parameters: {} }),
+      register: () => { registrations += 1; return () => {} },
+      guard: () => () => {},
+    }
+    const scoped = (context: Context) => {
+      const scope = createScope(context, {})
+      Object.defineProperty(scope.ctx, 'tools', { value: tools })
+      return scope
+    }
+    let scope = scoped(ctx)
+    const live = { id: session.id, session, ctx: scope.ctx, cancel: () => {} }
+    ctx.provide('agents', { get: () => live } as never)
+    ctx.provide('tools', tools as never)
+    ctx.provide('fs', {
+      resolve: async (path: string) => ({ targetKey: path, displayPath: path }),
+    } as never)
+    ctx.provide('sandboxPolicy', { resolve: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: session.id }) } as never)
+    vi.stubGlobal('fetch', async (input: RequestInfo | URL, init?: RequestInit) => {
+      const request = new Request(input, init)
+      if (request.url.endsWith('/owner-credential')) return Response.json({ supported: true })
+      return Response.json({ version: 10, accessMode: 'open', allowedSubjectIds: [], sessionMode: 'write', requests: [] })
+    })
+    onTestFinished(() => { vi.unstubAllGlobals() })
+    const stop = await apply(ctx, { ownerStateFile: state })
+    onTestFinished(stop)
+    const change = () => ctx.liveshareShares.updatePermissions({ shareId: 'share', sessionMode: 'write' })
+    // The restore install is asynchronous; the two concurrent changes below start from it in place.
+    await vi.waitFor(() => { expect(registrations).toBe(VIEW_SURFACE) })
+    await Promise.all([change(), change()])
+    // The restart installed the view surface, and the two concurrent changes upgraded it once to the
+    // write-capable layer: the counter counts every registration the fixture saw.
+    expect(registrations).toBe(VIEW_SURFACE + WRITE_SURFACE)
+    await scope.dispose()
+    scope = scoped(ctx)
+    live.ctx = scope.ctx
+    await change()
+    expect(registrations).toBe(VIEW_SURFACE + 2 * WRITE_SURFACE)
+    const actor = { providerId: 'mock', tenantId: 'tenant', subjectId: 'viewer' }
+    const token = 'pending-prompt' as import('@deepseek-ai/dsh-experimental-liveshare-protocol').TunnelRequestToken
+    const registrationToken = randomUUID() as TunnelRegistrationToken
+    worker.event?.({ type: 'share-rpc-request', registrationToken, shareId: 'share', token, id: 1, actor,
+      body: { op: 'call', path: '/api/session/prompt', body: { type: 'client-request', rpcId: 'rpc',
+        method: 'session/prompt', payload: { args: { request: { sessionId: 'source', requestId: 'pending',
+          mode: 'queue', content: [{ type: 'text', text: 'pending' }] } } } } },
+    })
+    await dispatchEntered.promise
+    // Narrowing to the view tier keeps the Session drivable and still cancels the pending input that was
+    // admitted for the write tier.
+    await ctx.liveshareShares.updatePermissions({ shareId: 'share', sessionMode: 'view' })
+    dispatchReleased.resolve(undefined)
+    await dispatchSettled.promise
+    expect(dispatched).toBe(0)
+    await stop()
+    await scope.dispose()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/source-access-unit.spec.ts b/packages/experimental/liveshare/tests/source-access-unit.spec.ts
new file mode 100644
index 0000000000..500f823f49
--- /dev/null
+++ b/packages/experimental/liveshare/tests/source-access-unit.spec.ts
@@ -0,0 +1,464 @@
+/** Source Session access layering: refusals, preparation, turn control, and child authorization. */
+
+import { Context } from '@deepseek-ai/cordis'
+import { createScope } from '@deepseek-ai/dsh-scope'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { activateSession, createSourceAccess } from '../src/host/source-access.ts'
+
+const viewer = { providerId: 'p', tenantId: 't', subjectId: 'alice' }
+const ROOT = '/granted'
+
+afterEach(() => {
+  vi.unstubAllEnvs()
+  vi.restoreAllMocks()
+})
+
+beforeEach(() => {
+  vi.spyOn(console, 'warn').mockImplementation(() => {})
+})
+
+function share(overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return {
+    shareId: 'share-1', sessionId: 'session-1', sessionTitle: 'Session', accessMode: 'open',
+    relay: 'https://relay.example.test/liveshare', gatewayToken: 'token', allowedSubjectIds: [],
+    createdAt: '2026-01-01T00:00:00Z', revision: 1, allowsFork: false, sessionMode: 'view', online: true,
+    ...overrides,
+  }
+}
+
+function liveAgent(session: Record<string, unknown> | undefined, context?: Context) {
+  return {
+    status: 'running',
+    session,
+    ...(context === undefined ? {} : { ctx: context }),
+    cancel: vi.fn(),
+  }
+}
+
+interface Options {
+  readonly noScope?: boolean
+  readonly session?: Record<string, unknown>
+  readonly services?: readonly ('fs' | 'tools' | 'sandboxPolicy')[]
+  readonly mode?: 'view' | 'write' | undefined
+  readonly registeredTools?: Map<string, unknown>
+}
+
+function harness(options: Options = {}) {
+  const base = new Context()
+  // The deployment's own definitions live in `registered`; the layer's replacements shadow them in
+  // `scoped`, so disposing a layer restores what the deployment registered rather than deleting it.
+  const registered = new Map<string, unknown>([['read', {
+    name: 'read', description: 'read', parameters: {}, output: { schema: {}, render: () => [] },
+    execute: vi.fn(async () => 'read'),
+  }]])
+  const scoped = new Map<string, unknown>()
+  const tools = {
+    get: vi.fn((name: string) => scoped.get(name) ?? registered.get(name)),
+    register: vi.fn((definition: { name: string }) => {
+      scoped.set(definition.name, definition)
+      return () => { scoped.delete(definition.name) }
+    }),
+    guard: vi.fn(() => () => {}),
+  }
+  const fs = {
+    resolve: vi.fn(async () => `${ROOT}/file`),
+    contains: vi.fn(() => true),
+    processPath: vi.fn((path: string) => path),
+    writeText: vi.fn(async () => ({ operation: 'update', before: 'v0', after: 'v1', version: 'v1' })),
+  }
+  const sandboxPolicy = { resolve: vi.fn(() => ({ mode: 'workspace-write', workspaceRoot: ROOT, sessionId: 'session-1' })) }
+  const services = options.services ?? ['fs', 'tools', 'sandboxPolicy']
+  if (services.includes('fs')) base.provide('fs', fs as never)
+  if (services.includes('tools')) base.provide('tools', tools as never)
+  if (services.includes('sandboxPolicy')) base.provide('sandboxPolicy', sandboxPolicy as never)
+  const session = options.session ?? { id: 'session-1', header: { cwd: ROOT } }
+  const scope = options.noScope === true ? undefined : createScope(base, { session: { id: 'session-1' } })
+  const live = liveAgent(session, options.noScope === true ? new Context() : scope?.ctx)
+  const agents = { get: vi.fn((id: string) => id === 'session-1' ? live : undefined), activate: vi.fn(async () => {}) }
+  base.provide('agents', agents as never)
+  const typertLookup = { resolve: vi.fn(async () => ({})) }
+  base.provide('typert', { lookups: { get: () => typertLookup } } as never)
+  const ownerShares = new Map<string, Record<string, unknown>>()
+  const forks = {
+    find: vi.fn((id: string): Record<string, unknown> | undefined => ({ childSessionId: id, shareId: 'share-1', creator: viewer, revokedAt: undefined })),
+    listForShare: vi.fn(() => [{ childSessionId: 'child-1', shareId: 'share-1', creator: viewer }]),
+  }
+  const relay = {
+    drivableModeOf: vi.fn((): 'view' | 'write' | undefined => options.mode === undefined ? 'view' : options.mode),
+    viewerAdmitted: vi.fn(() => true),
+    refreshRelayAccess: vi.fn(async () => {}),
+    applyRelayAccess: vi.fn(),
+    forgetRelayAccess: vi.fn(),
+    invalidateRelayAccess: vi.fn(),
+  }
+  const state = { disposed: false }
+  const access = createSourceAccess({
+    ctx: base,
+    ownerShares,
+    forks,
+    relay,
+    disposed: () => state.disposed,
+    accessChanged: vi.fn(),
+  } as never)
+  return {
+    access, base, ownerShares, forks, relay, state,
+    live, agents, scope, tools, fs, sandboxPolicy, registered, scoped, session, typertLookup,
+  }
+}
+
+describe('source layer installation refusals', () => {
+  it('refuses when the Session is not live or has no scope', async () => {
+    const h = harness()
+    const missing = await h.access.apply(share({ sessionId: 'other' }) as never)
+    expect(missing).toEqual({ kind: 'refused', reason: 'no-live-session' })
+
+    const unscoped = harness({ noScope: true })
+    expect(await unscoped.access.apply(share() as never)).toEqual({ kind: 'refused', reason: 'no-session-scope' })
+  })
+
+  it('names each host service the layer cannot work without', async () => {
+    for (const [service, reason] of [
+      ['fs', 'no-filesystem'], ['tools', 'no-tool-registry'], ['sandboxPolicy', 'no-sandbox-policy'],
+    ] as const) {
+      const h = harness({ services: ['fs', 'tools', 'sandboxPolicy'].filter(name => name !== service) as never })
+      expect(await h.access.apply(share() as never)).toEqual({ kind: 'refused', reason })
+    }
+  })
+
+  it('refuses a Session without a granted root or working directory, or a root that will not resolve', async () => {
+    const noRoot = harness({ session: { id: 'session-1', header: { cwd: ROOT } } })
+    noRoot.sandboxPolicy.resolve.mockReturnValue({} as never)
+    expect(await noRoot.access.apply(share() as never)).toEqual({ kind: 'refused', reason: 'no-workspace-root' })
+
+    const noCwd = harness({ session: { id: 'session-1', header: {} } })
+    expect(await noCwd.access.apply(share() as never)).toEqual({ kind: 'refused', reason: 'no-session-cwd' })
+
+    const unresolved = harness()
+    unresolved.fs.resolve.mockRejectedValueOnce(new Error('missing'))
+    expect(await unresolved.access.apply(share() as never)).toEqual({ kind: 'refused', reason: 'workspace-unresolved' })
+  })
+
+  it('refuses a share removed or reassigned while the workspace resolved', async () => {
+    const h = harness()
+    h.fs.resolve.mockImplementationOnce(async () => {
+      h.ownerShares.clear()
+      return `${ROOT}/file`
+    })
+    expect(await h.access.apply(share() as never)).toEqual({ kind: 'refused', reason: 'share-gone' })
+
+    const reassigned = harness()
+    reassigned.ownerShares.set('share-1', share({ sessionId: 'other-session' }))
+    expect(await reassigned.access.apply(share() as never)).toEqual({ kind: 'refused', reason: 'share-reassigned' })
+  })
+
+  it('installs a usable layer, keeps it for the same tier, and reports its refusal codes', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', share())
+    const installed = await h.access.apply(share() as never)
+    expect(installed).toMatchObject({ kind: 'installed', installation: { readConfined: true } })
+    expect(h.access.confined('share-1')).toBe(true)
+    expect(h.access.confinementRefusal('share-1')).toBeUndefined()
+
+    const kept = await h.access.apply(share() as never)
+    expect(kept).toMatchObject({ kind: 'kept' })
+
+    expect(h.access.confinementRefusal('absent')).toBe('share-unknown')
+    h.relay.drivableModeOf.mockReturnValue(undefined)
+    expect(h.access.confinementRefusal('share-1')).toBe('share-mode-unknown')
+  })
+
+  it('reports the refusal recorded on an installation that confined no read', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', share())
+    h.registered.clear()
+    h.tools.get.mockReturnValue(undefined)
+    const outcome = await h.access.apply(share() as never)
+    expect(outcome).toMatchObject({ kind: 'installed', installation: { readConfined: false, refusal: 'tool-unavailable' } })
+    expect(h.access.confined('share-1')).toBe(false)
+    expect(h.access.refusalOf('share-1')).toBe('tool-unavailable')
+    expect(h.access.confinementRefusal('share-1')).toBe('layer-read-unconfined')
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('source session not confined'))
+  })
+
+  it('states a write layer whose replacement could not register, and logs debug outcomes', async () => {
+    vi.stubEnv('LIVESHARE_VIEWER_DEBUG', '1')
+    const h = harness({ mode: 'write' })
+    h.ownerShares.set('share-1', share({ sessionMode: 'write' }))
+    h.registered.set('write', { name: 'write', description: 'write', parameters: {}, output: { schema: {}, render: () => [] } })
+    h.tools.register.mockImplementation((definition: { name: string }) => {
+      if (definition.name === 'write') throw new Error('duplicate write')
+      h.registered.set(definition.name, definition)
+      return () => { h.registered.delete(definition.name) }
+    })
+    const outcome = await h.access.apply(share({ sessionMode: 'write' }) as never)
+    expect(outcome).toMatchObject({ kind: 'installed', installation: { readConfined: true, writeConfined: false } })
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('write not confined'))
+
+    const clean = harness({ mode: 'write' })
+    clean.ownerShares.set('share-1', share({ sessionMode: 'write' }))
+    clean.registered.set('write', { name: 'write', description: 'write', parameters: {}, output: { schema: {}, render: () => [] } })
+    await clean.access.apply(share({ sessionMode: 'write' }) as never)
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('source access installed'))
+  })
+
+  it('logs an unconfined read with its registration error and a non-Error cause', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', share())
+    h.tools.register.mockImplementation((definition: { name: string }) => {
+      throw definition.name === 'read' ? 'plain read failure' : new Error('unexpected')
+    })
+    const outcome = await h.access.apply(share() as never)
+    expect(outcome).toMatchObject({ kind: 'installed', installation: { readConfined: false, registrationFailure: { tool: 'read' } } })
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('plain read failure'))
+  })
+
+  it('drives the confined write through the Session’s current grants', async () => {
+    const h = harness({ mode: 'write' })
+    h.ownerShares.set('share-1', share({ sessionMode: 'write' }))
+    h.registered.set('write', { name: 'write', description: 'write', parameters: {}, output: { schema: {}, render: () => [] } })
+    await h.access.apply(share({ sessionMode: 'write' }) as never)
+    const write = h.scoped.get('write') as { execute: (args: unknown, exec: unknown) => Promise<unknown> }
+    await expect(write.execute({ file_path: 'file', content: 'text' }, {
+      arguments: { file_path: 'file' }, agent: { id: 'session-1', session: h.session }, signal: undefined,
+    })).resolves.toBeDefined()
+    // The refresh reads the grants of the shares that keep this Session drivable.
+    expect(h.relay.refreshRelayAccess).toHaveBeenCalledWith('share-1')
+  })
+
+  it('reports the refusal code a share with no recorded layer carries', () => {
+    const h = harness()
+    expect(h.access.refusalOf('absent')).toBeUndefined()
+    expect(h.access.confinementRefusal('absent')).toBe('share-unknown')
+  })
+
+  it('names the refused guard in debug mode', async () => {
+    vi.stubEnv('LIVESHARE_VIEWER_DEBUG', '1')
+    const h = harness()
+    await h.access.apply(share({ sessionId: 'other' }) as never)
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('source access not installed'))
+  })
+
+  it('refuses a live context without a session scope', async () => {
+    const h = harness({ noScope: true })
+    expect(await h.access.apply(share() as never)).toEqual({ kind: 'refused', reason: 'no-session-scope' })
+  })
+
+  it('refuses a tier that changed while the workspace resolved, and keeps a concurrent layer', async () => {
+    const h = harness({ mode: 'write' })
+    h.ownerShares.set('share-1', share({ sessionMode: 'write' }))
+    h.fs.resolve.mockImplementationOnce(async () => {
+      // The only share over the Session narrowed while the workspace resolved.
+      h.ownerShares.set('share-1', share({ sessionMode: 'view' }))
+      return `${ROOT}/file`
+    })
+    expect(await h.access.apply(share({ sessionMode: 'write' }) as never))
+      .toEqual({ kind: 'refused', reason: 'share-mode-changed' })
+
+    const concurrent = harness()
+    concurrent.ownerShares.set('share-1', share())
+    let release: (() => void) | undefined
+    concurrent.fs.resolve.mockImplementationOnce(() => new Promise((resolve) => {
+      release = () => { resolve(`${ROOT}/file`) }
+    }))
+    const slow = concurrent.access.apply(share() as never)
+    await Promise.resolve()
+    // Another attempt finishes first and records the layer.
+    await concurrent.access.apply(share() as never)
+    release?.()
+    expect(await slow).toMatchObject({ kind: 'kept' })
+  })
+
+  it('reinstalls a write tier whose recorded layer confined no write', async () => {
+    const h = harness({ mode: 'write' })
+    h.ownerShares.set('share-1', share({ sessionMode: 'write' }))
+    h.registered.delete('write')
+    await h.access.apply(share({ sessionMode: 'write' }) as never)
+    expect(h.access.confinementRefusal('share-1')).toBe('layer-write-unconfined')
+    h.registered.set('write', { name: 'write', description: 'write', parameters: {}, output: { schema: {}, render: () => [] } })
+    expect(await h.access.apply(share({ sessionMode: 'write' }) as never)).toMatchObject({ kind: 'installed' })
+  })
+})
+
+describe('turn and tool helpers', () => {
+  it('stops the running turn of a share that ends, whoever started it', () => {
+    const h = harness()
+    h.access.cancelShareTurn('absent')
+    h.ownerShares.set('share-1', share())
+    h.access.cancelShareTurn('share-1')
+    expect(h.live.cancel).toHaveBeenCalledWith({ kind: 'user' }, { keepInbox: true })
+    h.live.cancel.mockClear()
+    // A share that is not being served by a running Session stops nothing.
+    h.live.status = 'idle'
+    h.access.cancelShareTurn('share-1')
+    expect(h.live.cancel).not.toHaveBeenCalled()
+  })
+
+  it('releases the Session’s layer once none of its shares is active', async () => {
+    const h = harness()
+    const granted = share()
+    h.ownerShares.set('share-1', granted)
+    await h.access.apply(granted as never)
+    expect(h.access.confined('share-1')).toBe(true)
+
+    h.ownerShares.clear()
+    h.access.reconcileSessionAccess('session-1')
+    expect(h.access.confinementRefusal('share-1')).toBe('share-unknown')
+    // A Session with neither shares nor a layer reconciles to nothing.
+    h.access.reconcileSessionAccess('session-1')
+    h.ownerShares.set('share-1', granted)
+    expect(h.access.confinementRefusal('share-1')).toBe('layer-absent')
+  })
+
+  it('releases a layer whose only share passes its deadline', async () => {
+    const h = harness()
+    const expiring = share({ expiresAt: '2000-01-01T00:00:00.000Z' })
+    h.ownerShares.set('share-1', expiring)
+    // A record past its deadline installs nothing, so the Session keeps its own tools.
+    expect(await h.access.apply(expiring as never)).toEqual({ kind: 'refused', reason: 'share-inactive' })
+  })
+
+  it('re-installs the read-only layer when the last write share narrows to view', async () => {
+    const h = harness({ mode: 'write' })
+    const writable = share({ sessionMode: 'write' })
+    h.ownerShares.set('share-1', writable)
+    h.registered.set('write', { name: 'write', description: 'write', parameters: {}, output: { schema: {}, render: () => [] } })
+    expect(await h.access.apply(writable as never)).toMatchObject({ kind: 'installed', installation: { writeConfined: true } })
+
+    h.relay.drivableModeOf.mockReturnValue('view')
+    h.ownerShares.set('share-1', share({ sessionMode: 'view' }))
+    h.access.reconcileSessionAccess('session-1')
+    await vi.waitFor(() => { expect(h.access.confined('share-1')).toBe(true) })
+    // The write name is gone from the Session's layer, and so is the bounded write behind it.
+    expect(h.scoped.has('write')).toBe(false)
+    expect(h.scoped.has('read')).toBe(true)
+  })
+
+  it('does not prepare a layer that is already usable', async () => {
+    const h = harness()
+    h.ownerShares.set('share-1', share())
+    await h.access.apply(share() as never)
+    await expect(h.access.prepareSourceSession('session-1', 'prompt')).resolves.toBeUndefined()
+  })
+
+  it('starts one preparation per Session while another is in flight', async () => {
+    const h = harness()
+    const deferred = Promise.withResolvers<Record<string, unknown>>()
+    h.typertLookup.resolve.mockReturnValueOnce(deferred.promise)
+    h.ownerShares.set('share-1', share())
+    h.access.prepareSourceForReader('share-1')
+    h.access.prepareSourceForReader('share-1')
+    deferred.resolve({})
+    await vi.waitFor(() => { expect(h.typertLookup.resolve).toHaveBeenCalledTimes(1) })
+  })
+
+  it('reads the paths each admitted tool call names', () => {
+    const h = harness()
+    const paths = (name: string, args: unknown) => h.access.forkToolPaths({ name, arguments: args })
+    expect(paths('read', { file_path: 'x' })).toEqual({ paths: ['x'], noFileEffect: false })
+    expect(paths('read', { file_path: '' })).toEqual({ paths: undefined, noFileEffect: false })
+    expect(paths('read', 'plain')).toEqual({ paths: undefined, noFileEffect: false })
+    expect(paths('read_image', { file_path: 'img.png' })).toEqual({ paths: ['img.png'], noFileEffect: false })
+    // A pathless search names no path of its own: the host supplies the workspace default.
+    expect(paths('glob', { pattern: '**/*.ts' })).toEqual({ paths: [], noFileEffect: false })
+    expect(paths('grep', { pattern: 'x', path: 'src' })).toEqual({ paths: ['src'], noFileEffect: false })
+    expect(paths('grep', { pattern: 'x', path: '' })).toEqual({ paths: undefined, noFileEffect: false })
+    expect(paths('present', { files: [{ path: 'a.ts' }, { path: 'b.ts' }] }))
+      .toEqual({ paths: ['a.ts', 'b.ts'], noFileEffect: false })
+    expect(paths('present', { files: [{ path: 'a.ts' }, { description: 'no path' }] }))
+      .toEqual({ paths: undefined, noFileEffect: false })
+    // No-filesystem-effect tools declare that instead of naming paths.
+    expect(paths('todo_write', { todos: [] })).toEqual({ paths: [], noFileEffect: true })
+    expect(paths('skill', { name: 'one' })).toEqual({ paths: [], noFileEffect: true })
+    // A name the surface does not admit establishes no path, so its ceiling decision is the only answer.
+    expect(paths('bash', { command: 'ls' })).toEqual({ paths: undefined, noFileEffect: false })
+  })
+
+  it('reports why activation cannot run', async () => {
+    const bare = new Context()
+    await expect(activateSession(bare, 'session-1')).rejects.toThrow('no agent lookup')
+    const unresolved = new Context()
+    unresolved.provide('typert', { lookups: { get: () => ({ resolve: async () => undefined }) } } as never)
+    await expect(activateSession(unresolved, 'session-1')).rejects.toThrow('answered with nothing')
+  })
+})
+
+describe('child and turn control', () => {
+  it('cancels only the child turns of the named share and viewer', () => {
+    const h = harness()
+    const cancel = vi.fn()
+    h.agents.get.mockImplementation(((id: string) => id === 'session-1' ? h.live : { cancel }) as never)
+    h.forks.listForShare.mockReturnValue([
+      { childSessionId: 'mine', shareId: 'share-1', creator: viewer },
+      { childSessionId: 'theirs', shareId: 'share-1', creator: { ...viewer, subjectId: 'bob' } },
+    ] as never)
+    h.access.cancelChildTurns('share-1', viewer)
+    expect(cancel).toHaveBeenCalledTimes(1)
+    h.access.cancelChildTurns('share-1')
+    expect(cancel).toHaveBeenCalledTimes(3)
+  })
+
+  it('authorizes a child only while its share still admits it and its tier allows the tool', () => {
+    const h = harness({ mode: 'view' })
+    h.ownerShares.set('share-1', share())
+    expect(h.access.childToolAuthorized('child-1', 'read')).toBe(true)
+    expect(h.access.childToolAuthorized('child-1', 'grep')).toBe(true)
+    expect(h.access.childToolAuthorized('child-1', 'todo_write')).toBe(true)
+    expect(h.access.childToolAuthorized('child-1', 'write')).toBe(false)
+    expect(h.access.childToolAuthorized('child-1', 'edit')).toBe(false)
+    expect(h.access.childToolAuthorized('child-1', 'bash')).toBe(false)
+    expect(h.access.childToolAuthorized('child-1', 'ghost')).toBe(false)
+    h.relay.drivableModeOf.mockReturnValue('write')
+    expect(h.access.childToolAuthorized('child-1', 'write')).toBe(true)
+    expect(h.access.childToolAuthorized('child-1', 'edit')).toBe(true)
+    h.forks.find.mockReturnValue(undefined)
+    expect(h.access.childToolAuthorized('absent', 'read')).toBe(false)
+    h.forks.find.mockReturnValue({ childSessionId: 'child-1', shareId: 'share-1', creator: viewer, revokedAt: 'now' })
+    expect(h.access.childToolAuthorized('child-1', 'read')).toBe(false)
+    h.forks.find.mockReturnValue({ childSessionId: 'child-1', shareId: 'share-1', creator: viewer })
+    h.relay.viewerAdmitted.mockReturnValue(false)
+    expect(h.access.childToolAuthorized('child-1', 'read')).toBe(false)
+    h.relay.viewerAdmitted.mockReturnValue(true)
+    h.relay.drivableModeOf.mockReturnValue(undefined)
+    expect(h.access.childToolAuthorized('child-1', 'read')).toBe(false)
+    h.relay.drivableModeOf.mockReturnValue('view')
+    h.ownerShares.get('share-1')!.expiresAt = '2000-01-01T00:00:00Z'
+    expect(h.access.childToolAuthorized('child-1', 'read')).toBe(false)
+  })
+
+})
+
+describe('preparation', () => {
+  it('prepares a source Session only while a share names it and needs a layer', async () => {
+    const h = harness()
+    await expect(h.access.prepareSourceSession('absent', 'prompt')).resolves.toBeUndefined()
+    h.ownerShares.set('share-1', share())
+    h.agents.get.mockReturnValue(h.live)
+    await h.access.prepareSourceSession('session-1', 'prompt')
+    expect(h.access.confined('share-1')).toBe(true)
+  })
+
+  it('prepares from a reader request only for a share that needs it and is not already preparing', async () => {
+    const h = harness()
+    h.access.prepareSourceForReader('absent')
+    h.state.disposed = true
+    h.access.prepareSourceForReader('share-1')
+    h.state.disposed = false
+    h.ownerShares.set('share-1', share())
+    h.relay.drivableModeOf.mockReturnValue(undefined)
+    h.access.prepareSourceForReader('share-1')
+    // A preparation that rejects is reported and leaves the share refused.
+    const failing = harness()
+    failing.ownerShares.set('share-1', share())
+    failing.typertLookup.resolve.mockRejectedValueOnce(new Error('activation failed'))
+    failing.access.prepareSourceForReader('share-1')
+    await vi.waitFor(() => { expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('preparing the source failed')) })
+
+    // A prepared share with no live agent installs nothing and stays unconfined.
+    const unlive = harness()
+    unlive.ownerShares.set('share-1', share())
+    unlive.agents.get.mockReturnValue(undefined)
+    unlive.access.prepareSourceForReader('share-1')
+    await vi.waitFor(() => { expect(vi.mocked(console.warn).mock.calls.length).toBeGreaterThan(0) })
+    expect(unlive.access.confined('share-1')).toBe(false)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/source-write-observation.spec.ts b/packages/experimental/liveshare/tests/source-write-observation.spec.ts
new file mode 100644
index 0000000000..05aa5bae62
--- /dev/null
+++ b/packages/experimental/liveshare/tests/source-write-observation.spec.ts
@@ -0,0 +1,319 @@
+/**
+ * The bounded write under the deployment's real observation policy.
+ *
+ * The policy that decides a write — a file must have been read first, and an observed version must still
+ * hold — runs on this path through the same `fs/write-intent` waterfall the shipped write fires, so these
+ * cases are the policy's own answers rather than this host's substitute for them.
+ */
+
+import {
+  existsSync,
+  mkdirSync,
+  mkdtempSync,
+  readFileSync,
+  renameSync,
+  rmSync,
+  symlinkSync,
+  writeFileSync,
+} from 'node:fs'
+import { tmpdir } from 'node:os'
+import { dirname, join } from 'node:path'
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+import { provideWorkingDirectoryFixture } from '@deepseek-ai/dsh-agent-loop-testkit'
+import { Context } from '@deepseek-ai/cordis'
+import { createScope, type Scope } from '@deepseek-ai/dsh-scope'
+import type { Agent } from '@deepseek-ai/dsh-agent'
+import { SESSION_FORMAT_VERSION, Session, SessionId } from '@deepseek-ai/dsh-session'
+import { ToolCallId } from '@deepseek-ai/dsh-llm'
+import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
+import ToolRuntime, { type ToolExecutionToken, type ToolRunContext } from '@deepseek-ai/dsh-tools'
+import LocalFileSystem from '@deepseek-ai/dsh-fs-local'
+import * as FsPolicy from '@deepseek-ai/dsh-fs-observation-policy'
+import * as ToolFs from '@deepseek-ai/dsh-tool-fs'
+import {
+  installSourceSessionAccess,
+  type ForkEnforcementFs,
+  type SourceSessionAccessInstallation,
+} from '../src/host/fork-enforcement.ts'
+import type { ForkToolExecution } from '../src/host/fork-tool-guard.ts'
+import { executeOneTool } from './tool-call.ts'
+import * as NativeToolExecutor from '@deepseek-ai/dsh-tool-executor-native'
+
+const testToolSignal = new AbortController().signal
+const session = 'session-shared'
+
+let tree: string
+let root: string
+let ctx: Context
+let scope: Scope
+/** The shared Session's own scope key, which the replacements are registered against. */
+let scopeKey: object
+let shared: Agent
+let access: SourceSessionAccessInstallation | undefined
+let calls = 0
+
+/** The host's own argument reader: the shipped filesystem tools name their path `file_path`. */
+function describeTool(execution: ForkToolExecution) {
+  const args = execution.arguments
+  const path = typeof args === 'object' && args !== null && 'file_path' in args
+    ? (args as { readonly file_path?: unknown }).file_path
+    : undefined
+  return typeof path === 'string'
+    ? { paths: [path], noFileEffect: false }
+    : { paths: undefined, noFileEffect: false }
+}
+
+/** A session-scoped Agent stand-in the real tool runtime can drive without an AgentLoop. */
+function standInAgent(id: SessionId, cwd: string): Omit<Agent, 'ctx'> {
+  const session = Session.create(id, [], {
+    version: SESSION_FORMAT_VERSION, id, createdAt: 0, cwd, isSeeded: false,
+  })
+  const unsupported = (): never => { throw new Error('this test Agent does not support Inbox mutations') }
+  return {
+    id,
+    options: {},
+    model: { current: () => undefined, select: () => {} },
+    session,
+    inbox: {
+      nextTurn: [], nextStep: [], clear: unsupported, append: unsupported,
+      prepend: unsupported, replace: unsupported, remove: unsupported, splice: unsupported,
+    },
+    status: 'idle',
+    send: () => {},
+    followup: () => {},
+    steer: () => {},
+    inject: () => {},
+    cancel: () => {},
+    whenIdle: () => Promise.resolve(),
+    runMaintenance: task => task(new AbortController().signal),
+  }
+}
+
+beforeEach(async () => {
+  tree = mkdtempSync(join(tmpdir(), 'liveshare-observe-'))
+  root = join(tree, 'workspace')
+  writeFileSync(join(tree, 'kept.txt'), '')
+  const { mkdirSync } = await import('node:fs')
+  mkdirSync(root, { recursive: true })
+  writeFileSync(join(root, 'file.txt'), 'original\n')
+
+  ctx = new Context()
+  provideWorkingDirectoryFixture(ctx, root)
+  await ctx.plugin(SystemPrompt)
+  await ctx.plugin(ToolRuntime)
+  await ctx.plugin(NativeToolExecutor)
+  await ctx.plugin(LocalFileSystem, { cwd: root })
+  await ctx.plugin(FsPolicy)
+  await ctx.plugin(ToolFs)
+
+  const key = standInAgent(SessionId(session), root)
+  let minted: Scope | undefined
+  await ctx.plugin(Object.assign(
+    (inner: Context) => { minted = createScope(inner, key) },
+    { inject: ['tools', 'fs', 'systemPrompt'] },
+  ))
+  if (minted === undefined) throw new Error('the shared Session scope was not minted')
+  scope = minted
+  scopeKey = key
+  shared = Object.assign(key, { ctx: scope.ctx })
+  access = await install(ctx.fs)
+  expect(access.readConfined).toBe(true)
+})
+
+/** Install the source-session access layer over one filesystem view of the shared Session. */
+async function install(over: ForkEnforcementFs): Promise<SourceSessionAccessInstallation> {
+  return installSourceSessionAccess({
+    sessionId: session,
+    context: scope.ctx,
+    scope: scopeKey,
+    grantedRoot: await ctx.fs.resolve(root),
+    cwd: root,
+    resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: shared.session.id }),
+    fs: over,
+    tools: ctx.tools,
+    describe: describeTool,
+    write: { mayWrite: () => true },
+  })
+}
+
+afterEach(async () => {
+  try {
+    access?.dispose()
+    await scope.dispose()
+    await ctx.fiber.dispose()
+  } finally {
+    rmSync(tree, { recursive: true, force: true })
+  }
+})
+
+/** Run one tool as a turn of the shared Session. */
+function call(name: string, args: unknown) {
+  calls += 1
+  return executeOneTool(ctx, {
+    signal: testToolSignal,
+    callId: ToolCallId(`observe-${String(calls)}`),
+    name,
+    arguments: args,
+    agent: shared,
+  })
+}
+
+const text = (result: { readonly content: readonly { readonly type: string; readonly text?: string }[] }): string =>
+  result.content.filter(block => block.type === 'text').map(block => block.text).join('')
+
+describe('bounded write under the observation policy', () => {
+  it('refuses a write to a file this caller never read', async () => {
+    const result = await call('write', { file_path: join(root, 'file.txt'), content: 'viewer\n' })
+
+    expect(result.isError).toBe(true)
+    // The policy expresses "never read" as `createIfAbsent`, which the provider refuses for a file that is
+    // already there.
+    expect(text(result)).toMatch(/without reading it first/u)
+    expect(readFileSync(join(root, 'file.txt'), 'utf8')).toBe('original\n')
+  })
+
+  it('allows the write once the caller has read the file', async () => {
+    const read = await call('read', { file_path: join(root, 'file.txt') })
+    expect(read.isError).toBe(false)
+
+    const result = await call('write', { file_path: join(root, 'file.txt'), content: 'viewer\n' })
+
+    expect(result.isError).toBe(false)
+    expect(readFileSync(join(root, 'file.txt'), 'utf8')).toBe('viewer\n')
+  })
+
+  it('confines a turn of the owner while the layer is installed', async () => {
+    // The sandbox belongs to the Session, so a turn no viewer started reads and writes through the same
+    // bounded path. Disposing the layer is what restores the deployment's own tools.
+    expect(access?.readConfined).toBe(true)
+    const path = join(root, 'file.txt')
+    const outside = join(dirname(root), 'owner-outside.txt')
+
+    const read = await call('read', { file_path: path })
+    expect(read.isError).toBe(false)
+    const write = await call('write', { file_path: path, content: 'owner\n' })
+    expect(write.isError).toBe(false)
+    expect(readFileSync(path, 'utf8')).toBe('owner\n')
+    const outsideWrite = await call('write', { file_path: outside, content: 'owner\n' })
+    expect(outsideWrite.isError).toBe(true)
+    expect(existsSync(outside)).toBe(false)
+
+    access?.dispose()
+    access = undefined
+    const restored = await call('write', { file_path: outside, content: 'owner\n' })
+    expect(restored.isError).toBe(false)
+    expect(readFileSync(outside, 'utf8')).toBe('owner\n')
+  })
+
+  it('takes the version its own write published as the basis of the next one', async () => {
+    const read = await call('read', { file_path: join(root, 'file.txt') })
+    expect(read.isError).toBe(false)
+    const first = await call('write', { file_path: join(root, 'file.txt'), content: 'first\n' })
+    expect(first.isError).toBe(false)
+
+    // The second write has no read of its own in between: the version the first one published is what
+    // this caller observed, exactly as the shipped write records it.
+    const second = await call('write', { file_path: join(root, 'file.txt'), content: 'second\n' })
+
+    expect(second.isError).toBe(false)
+    expect(readFileSync(join(root, 'file.txt'), 'utf8')).toBe('second\n')
+  })
+
+  it('refuses a write whose observed version no longer holds', async () => {
+    const read = await call('read', { file_path: join(root, 'file.txt') })
+    expect(read.isError).toBe(false)
+    // Another writer changes the file directly, as a concurrent owner write would.
+    const target = await ctx.fs.resolve(join(root, 'file.txt'))
+    await ctx.fs.writeText(target, 'someone else\n')
+
+    const result = await call('write', { file_path: join(root, 'file.txt'), content: 'viewer\n' })
+
+    expect(result.isError).toBe(true)
+    expect(readFileSync(join(root, 'file.txt'), 'utf8')).toBe('someone else\n')
+  })
+
+  it('records absence for a target the grant confirms is missing, so a later write creates it', async () => {
+    const path = join(root, 'file.txt')
+    expect((await call('read', { file_path: path })).isError).toBe(false)
+    // The file goes away, as an owner's own tool or another process could leave it.
+    rmSync(path)
+
+    const missing = await call('read', { file_path: path })
+    expect(missing.isError).toBe(true)
+    expect(text(missing)).toMatch(/not found/u)
+
+    // The miss is the caller's own observation, exactly as the shipped read records it, so the create that
+    // follows is a create rather than a stale replacement.
+    const created = await call('write', { file_path: path, content: 'recreated\n' })
+    expect(created.isError).toBe(false)
+    expect(readFileSync(path, 'utf8')).toBe('recreated\n')
+  })
+
+  it('claims no absence once a granted parent is replaced by a link to an outside directory', async () => {
+    // The parent the grant authorizes is replaced by a link, and the outside directory holds a file of the
+    // requested name: a lookup that followed the path would be asking about that other tree entirely.
+    const parent = join(root, 'sub')
+    const held = join(root, 'held')
+    const outside = join(tree, 'outside')
+    mkdirSync(parent)
+    mkdirSync(outside)
+    writeFileSync(join(outside, 'theirs.txt'), 'theirs\n')
+    renameSync(parent, held)
+    symlinkSync(outside, parent)
+
+    const read = await call('read', { file_path: join(parent, 'theirs.txt') })
+    expect(read.isError).toBe(true)
+    // The refusal names confinement, not absence: the grant never confirmed anything about that target.
+    expect(text(read)).toMatch(/not inside the workspace/iu)
+    expect(text(read)).not.toMatch(/not found/iu)
+
+    const write = await call('write', { file_path: join(parent, 'theirs.txt'), content: 'viewer\n' })
+    expect(write.isError).toBe(true)
+    expect(readFileSync(join(outside, 'theirs.txt'), 'utf8')).toBe('theirs\n')
+  })
+
+  it('records no absence for a missing target outside the granted workspace', async () => {
+    const outside = join(dirname(root), 'absent-outside.txt')
+
+    const missing = await call('read', { file_path: outside })
+    expect(missing.isError).toBe(true)
+    // Nothing about that path was observed, so a write there is refused rather than treated as a create
+    // the grant would authorize.
+    const created = await call('write', { file_path: outside, content: 'viewer\n' })
+    expect(created.isError).toBe(true)
+    expect(existsSync(outside)).toBe(false)
+  })
+
+  it('refuses a write outside the granted workspace whatever the policy says', async () => {
+    const outside = join(dirname(root), 'outside.txt')
+    writeFileSync(outside, 'owner\n')
+
+    const result = await call('write', { file_path: outside, content: 'viewer\n' })
+
+    expect(result.isError).toBe(true)
+    expect(readFileSync(outside, 'utf8')).toBe('owner\n')
+  })
+
+  it('refuses an outside target with an error identified by the FS_SANDBOX_DENIED code', async () => {
+    const outside = join(dirname(root), 'outside.txt')
+    writeFileSync(outside, 'owner\n')
+    const callId = ToolCallId('observe-direct')
+    const run = (name: string, args: Record<string, string>): Promise<unknown> => {
+      const replacement = scope.ctx.tools.get(name, scopeKey)
+      if (replacement === undefined) throw new Error(`the shared Session has no ${name} tool`)
+      const exec: ToolRunContext = {
+        callId, rootCallId: callId, name, arguments: args, agent: shared, signal: testToolSignal,
+        token: Symbol(name) as ToolExecutionToken, deferContext: () => {}, concludeTurn: () => {},
+      }
+      return replacement.execute(args, exec)
+    }
+
+    const read = run('read', { file_path: outside })
+    await expect(read).rejects.toThrow(/not inside the workspace/u)
+    await expect(read).rejects.toMatchObject({ code: 'FS_SANDBOX_DENIED' })
+    await expect(run('write', { file_path: outside, content: 'viewer\n' })).rejects.toMatchObject({
+      code: 'FS_SANDBOX_DENIED',
+    })
+    expect(readFileSync(outside, 'utf8')).toBe('owner\n')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/source-write-recovery.host.spec.ts b/packages/experimental/liveshare/tests/source-write-recovery.host.spec.ts
new file mode 100644
index 0000000000..85191c5437
--- /dev/null
+++ b/packages/experimental/liveshare/tests/source-write-recovery.host.spec.ts
@@ -0,0 +1,311 @@
+// @vitest-environment node
+/**
+ * A write share gets its access layer when a reader asks for the page, and a revision bump no longer
+ * abandons an installation.
+ *
+ * A host that restarts with a write share installs no layer while that Session's agent is not live, and a
+ * Relay authority refresh that lands mid-install used to abandon the installation silently. Either way the
+ * reader's own snapshot carried no write action, so its composer stayed inert and the prompt path that
+ * prepares the source was never reached. The reader's page request has to break that circle, without making
+ * the reader wait and without leaving the share writable when it cannot be driven.
+ */
+
+import { Context } from '@deepseek-ai/cordis'
+import { Peer } from '@deepseek-ai/dsh-client-connection'
+import RemoteAccessService from '@deepseek-ai/dsh-api-remote-access'
+import { randomUUID } from 'node:crypto'
+import { createScope } from '@deepseek-ai/dsh-scope'
+import { Session, SessionId, SESSION_FORMAT_VERSION } from '@deepseek-ai/dsh-session'
+import { mkdirSync, mkdtempSync, realpathSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import type {
+  TunnelRegistrationToken,
+  TunnelRequestToken,
+  TunnelWorkerEvent,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type {} from '../src/index.ts'
+import { apply } from '../src/host/share-host.ts'
+import { SHARED_TOOL_PROFILES } from '../src/host/shared-tools.ts'
+import type { TunnelWorkerInput } from '../src/host/tunnel-worker.ts'
+import { shareViewerPrincipal } from '../src/host/viewer-principal.ts'
+
+const worker = vi.hoisted(() => ({
+  event: undefined as ((event: TunnelWorkerEvent) => void) | undefined,
+  sent: [] as unknown[],
+}))
+vi.mock('../src/host/tunnel-worker.ts', () => ({ TunnelWorker: class {
+  start() {}
+  onEvent(event: (event: TunnelWorkerEvent) => void) { worker.event = event; return () => { worker.event = undefined } }
+  send(command: TunnelWorkerInput) { worker.sent.push(command) }
+  stop() { return Promise.resolve() }
+} }))
+
+const reader = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_reader' }
+/** Replacements one layer installs at each tier; no-effect tools keep the deployment's own. */
+const VIEW_SURFACE = SHARED_TOOL_PROFILES.filter(profile => profile.tier === 'view' && !profile.noFileEffect).length
+const WRITE_SURFACE = SHARED_TOOL_PROFILES.filter(profile => !profile.noFileEffect).length
+
+interface HostOptions {
+  /** Whether the source Session's agent is live as the host mounts. */
+  readonly live?: boolean
+  /** How the agent lookup answers a preparation: the agent appears, is absent, or never answers. */
+  readonly activation?: 'live' | 'nothing' | 'never'
+  /** Resolves each workspace resolution; absent resolves at once. */
+  readonly workspace?: () => Promise<void>
+  /** Whether the host mounts a sandbox policy service. */
+  readonly sandboxPolicy?: boolean
+  /** Whether the filesystem resolves the granted workspace root. */
+  readonly fsResolves?: boolean
+  /** Whether the Relay reports a session mode at all. */
+  readonly relayMode?: 'view' | 'write' | 'none'
+  /** Mode the restored share was recorded with; write unless a case starts read-only. */
+  readonly recordedMode?: 'view' | 'write'
+}
+
+/**
+ * Boot a host that restarted with one write share recorded, over a source Session whose agent is only
+ * activated by this host's own lookup.
+ * @param options - Live agent, workspace gate, mounted services, and what the Relay reports.
+ * @returns The context, the reader snapshot, a viewer caller, and the counters read.
+ */
+async function host(options: HostOptions = {}) {
+  const temporary = realpathSync(mkdtempSync(join(tmpdir(), 'liveshare-write-recovery-')))
+  onTestFinished(() => { rmSync(temporary, { recursive: true, force: true }) })
+  const root = join(temporary, 'workspace')
+  mkdirSync(root)
+  const state = join(temporary, 'owner.json')
+  writeFileSync(state, JSON.stringify({ instanceId: 'owner', relayUrl: 'https://relay.invalid', shares: [{ relay: 'https://relay.invalid',
+    shareId: 'share', sessionId: 'source', sessionTitle: 'Source', accessMode: 'open',
+    gatewayToken: 'token', allowedSubjectIds: [], createdAt: '2026-10-08T00:00:00Z',
+    sessionMode: options.recordedMode ?? 'write',
+  }] }))
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  await ctx.plugin(RemoteAccessService)
+  const session = Session.create(SessionId('source'), [], {
+    version: SESSION_FORMAT_VERSION, id: SessionId('source'), cwd: root, createdAt: 0, isSeeded: false,
+  })
+  let registrations = 0
+  const tools = {
+    get: () => ({ execute: () => Promise.resolve({ path: root }), parameters: {} }),
+    register: () => { registrations += 1; return () => {} },
+    guard: () => () => {},
+  }
+  const scope = createScope(ctx, {})
+  Object.defineProperty(scope.ctx, 'tools', { value: tools })
+  onTestFinished(() => scope.dispose())
+  let activated = options.live === true
+  const live = { id: session.id, session, ctx: scope.ctx, cancel: () => {} }
+  ctx.provide('agents', { get: () => (activated ? live : undefined) } as never)
+  const routes = new Map<string, (request: Request) => Promise<Response>>()
+  ctx.provide('tools', tools as never)
+  ctx.provide('fs', {
+    resolve: async (path: string) => {
+      if (options.workspace !== undefined) await options.workspace()
+      if (options.fsResolves === false) throw new Error('workspace not resolvable')
+      return { targetKey: path, displayPath: path }
+    },
+  } as never)
+  if (options.sandboxPolicy !== false) {
+    ctx.provide('sandboxPolicy', {
+      resolve: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: session.id }),
+    } as never)
+  }
+  ctx.provide('typert', { lookups: { get: (key: string) => key === 'agent'
+    ? { resolve: () => {
+      if (options.activation === 'never') return new Promise<undefined>(() => {})
+      if (options.activation === 'live') activated = true
+      return Promise.resolve(options.activation === 'nothing' ? undefined : live)
+    } }
+    : undefined } } as never)
+  ctx.provide('connection', {
+    createSharedFetchHandler: () => ({ requestBodyMode: () => 'buffered', fetch: async () => Response.json({}) }),
+    createPeer: (peerOptions: ConstructorParameters<typeof Peer>[1]) => new Peer(ctx, peerOptions),
+    fetch: { register: (route: { path: string; fetch: (request: Request) => Promise<Response> }) => {
+      routes.set(route.path, route.fetch)
+      return () => { routes.delete(route.path) }
+    } },
+  } as never)
+  vi.stubGlobal('fetch', async (input: RequestInfo | URL, init?: RequestInit) => {
+    const request = new Request(input, init)
+    if (request.url.endsWith('/owner-credential')) return Response.json({ supported: true })
+    return Response.json({
+      version: 10, accessMode: 'open', allowedSubjectIds: [], requests: [],
+      ...(options.relayMode === 'none' ? {} : { sessionMode: options.relayMode ?? 'write' }),
+    })
+  })
+  onTestFinished(() => { vi.unstubAllGlobals() })
+  const stop = await apply(ctx, { ownerStateFile: state })
+  onTestFinished(stop)
+  /** The reader's own snapshot, exactly what the served document and its stream carry. */
+  const snapshot = (): readonly string[] => {
+    const baseline = ctx.remoteAccess.snapshotFor(shareViewerPrincipal('share', reader))
+    return baseline.owner ? [] : baseline.grants.flatMap(grant => [...grant.actions])
+  }
+  /** Forward one Relay authority frame the way the tunnel does. */
+  const authority = (shareId: string, version: number, tier: 'view' | 'write' = 'write'): void => {
+    worker.event?.({ type: 'share-access-state', registrationToken: randomUUID() as TunnelRegistrationToken,
+      shareId, version, accessMode: 'open', allowedSubjectIds: [], sessionMode: tier } as never)
+  }
+  /** Send one viewer request the way the Relay forwards it. */
+  const ask = async (body: unknown): Promise<{ readonly status: number; readonly body: unknown }> => {
+    const token = `recovery-${randomUUID()}` as TunnelRequestToken
+    worker.event?.({ type: 'share-rpc-request', registrationToken: randomUUID() as TunnelRegistrationToken,
+      shareId: 'share', token, id: 1, actor: reader, body })
+    return vi.waitFor(() => {
+      const found = worker.sent.find((command): command is { token: string; status: number; body: unknown } =>
+        typeof command === 'object' && command !== null && 'token' in command && command.token === token)
+      if (found === undefined) throw new Error('no answer yet')
+      return found
+    })
+  }
+  return { ctx, snapshot, ask, authority, registrations: () => registrations, activated: () => activated }
+}
+
+describe('restored write share preparation', () => {
+  it('gains the write actions in the reader snapshot after a page request', async () => {
+    const fixture = await host({ activation: 'live' })
+    // The restart installed nothing, so the reader holds no write action yet.
+    expect(fixture.registrations()).toBe(0)
+    expect(fixture.snapshot()).not.toContain('session/prompt')
+
+    // One page request, the ordinary document read.
+    await fixture.ask({ op: 'asset', path: '' })
+
+    await vi.waitFor(() => { expect(fixture.snapshot()).toContain('session/prompt') })
+    expect(fixture.activated()).toBe(true)
+    expect(fixture.snapshot()).toContain('session/cancel')
+    // One installation registers a confined replacement for every tool the write tier admits.
+    expect(fixture.registrations()).toBe(WRITE_SURFACE)
+  })
+
+  it('keeps an installation a Relay authority refresh arrived during', async () => {
+    // The workspace resolution is held open so the authority frame lands inside the installation window:
+    // its revision bump used to abandon the installation silently, which no later path retried.
+    const entered = Promise.withResolvers<undefined>()
+    const release = Promise.withResolvers<undefined>()
+    const fixture = await host({
+      live: true,
+      workspace: () => { entered.resolve(undefined); return release.promise },
+    })
+    await entered.promise
+    expect(fixture.registrations()).toBe(0)
+
+    fixture.authority('share', 11)
+    // One turn of the loop is enough for the frame's synchronous `applyRelayAccess` to run.
+    await new Promise((resolve) => { setTimeout(resolve, 0) })
+    release.resolve(undefined)
+
+    await vi.waitFor(() => { expect(fixture.registrations()).toBe(WRITE_SURFACE) })
+    await vi.waitFor(() => { expect(fixture.snapshot()).toContain('session/prompt') })
+    expect(fixture.snapshot()).toContain('session/cancel')
+  })
+
+  it('makes a share writable when the owner moves it to write on a live Session', async () => {
+    // The restored share carries the view tier, so the restart installs the confined read it drives with.
+    const fixture = await host({ live: true, activation: 'live', recordedMode: 'view', relayMode: 'view' })
+    // The Relay authority admits this reader and reports the share's own view tier.
+    fixture.authority('share', 11, 'view')
+    await vi.waitFor(() => { expect(fixture.snapshot()).toContain('session/list') })
+    // The page's own request prepares the confined layer the view tier drives with.
+    await fixture.ask({ op: 'asset', path: '' })
+    await vi.waitFor(() => { expect(fixture.snapshot()).toContain('session/prompt') })
+    // The view surface, and no bounded write: the tier in force is not the write one.
+    expect(fixture.registrations()).toBe(VIEW_SURFACE)
+
+    const permissions = await fixture.ctx.liveshareShares.updatePermissions({ shareId: 'share', sessionMode: 'write' })
+
+    // ...and moving it to write installs the write-capable layer before the owner is told it took effect:
+    // the view installation is replaced, so the counter (which counts every registration the fixture ever
+    // saw) moves by the write surface the new layer registers.
+    expect(permissions).toMatchObject({ shareId: 'share', sessionMode: 'write', allowsFork: false })
+    expect(fixture.registrations()).toBe(VIEW_SURFACE + WRITE_SURFACE)
+    // The tier change re-registers the share with the Relay, which drops this host's stale authority: the
+    // reader's writes follow the Relay's own answer for the new tier, arriving with the installed layer.
+    fixture.authority('share', 12, 'write')
+    await vi.waitFor(() => { expect(fixture.snapshot()).toContain('session/prompt') })
+    expect(fixture.snapshot()).toContain('session/cancel')
+  })
+
+
+  it('states why a write prompt could not prepare the layer it needs', async () => {
+    // A host with no sandbox policy cannot confine the source, so the prompt path prepares and then
+    // refuses with the reason the record holds instead of driving the owner's Session unconstrained.
+    const fixture = await host({ live: true, sandboxPolicy: false })
+    fixture.authority('share', 12, 'write')
+    await vi.waitFor(() => { expect(fixture.snapshot()).toContain('session/list') })
+
+    const answer = await fixture.ask({
+      op: 'call',
+      path: '/api/session/prompt',
+      body: { sessionId: 'source', requestId: 'write-1', mode: 'queue', content: [{ type: 'text', text: 'hello' }] },
+    })
+
+    expect(answer.status).toBe(403)
+    // The preparation ran and the layer still could not be installed, so the refusal names that fact.
+    expect(answer.body).toMatchObject({ error: 'source-write-unavailable', prepared: true, session: 'known' })
+  })
+
+  it('answers the page and keeps the share refused while the Session cannot be activated', async () => {
+    const fixture = await host({ activation: 'nothing' })
+    const answer = await fixture.ask({ op: 'asset', path: '' })
+    expect(answer.status).toBeGreaterThan(0)
+    await vi.waitFor(() => { expect(fixture.activated()).toBe(false) })
+    expect(fixture.snapshot()).not.toContain('session/prompt')
+    expect(fixture.snapshot()).not.toContain('session/cancel')
+  })
+
+  it('answers the page without waiting for an activation that never settles', async () => {
+    const fixture = await host({ activation: 'never' })
+    // The document read is answered although the preparation it started never settles.
+    const answer = await fixture.ask({ op: 'asset', path: '' })
+    expect(answer.status).toBeGreaterThan(0)
+    expect(fixture.snapshot()).not.toContain('session/prompt')
+  })
+})
+
+describe('write access diagnostics', () => {
+  /**
+   * Run one case with viewer debugging on.
+   * @returns The warned lines, in order.
+   */
+  const debug = (): string[] => {
+    vi.stubEnv('LIVESHARE_VIEWER_DEBUG', '1')
+    onTestFinished(() => { vi.unstubAllEnvs() })
+    const warned: string[] = []
+    const spy = vi.spyOn(console, 'warn').mockImplementation((...args: unknown[]) => { warned.push(args.map(String).join(' ')) })
+    onTestFinished(() => { spy.mockRestore() })
+    return warned
+  }
+
+  it('names the guard that refused an installation', async () => {
+    const refused = debug()
+    const fixture = await host({ live: true, sandboxPolicy: false })
+    await vi.waitFor(() => {
+      expect(refused.some(line => line.includes('source access not installed')
+        && line.includes('trigger=restore') && line.includes('reason=no-sandbox-policy'))).toBe(true)
+      expect(fixture.registrations()).toBe(0)
+    })
+
+    const unresolvable = debug()
+    const second = await host({ live: true, fsResolves: false })
+    await vi.waitFor(() => {
+      expect(unresolvable.some(line => line.includes('reason=workspace-unresolved'))).toBe(true)
+      expect(second.registrations()).toBe(0)
+    })
+  })
+
+  it('states why a reader request prepared no layer, naming the guard that refused', async () => {
+    // A reader's page request starts the preparation itself, so a host that cannot install a layer has to
+    // say which guard refused rather than leaving the operator to guess why nothing was prepared.
+    const warned = debug()
+    const fixture = await host({ live: true, sandboxPolicy: false })
+    await fixture.ask({ op: 'asset', path: '' })
+    await vi.waitFor(() => {
+      expect(warned.some(line => line.includes('source access not installed')
+        && line.includes('trigger=reader') && line.includes('reason=no-sandbox-policy'))).toBe(true)
+    })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/source-write-routing.spec.ts b/packages/experimental/liveshare/tests/source-write-routing.spec.ts
new file mode 100644
index 0000000000..b33cc7c92c
--- /dev/null
+++ b/packages/experimental/liveshare/tests/source-write-routing.spec.ts
@@ -0,0 +1,333 @@
+/**
+ * Where a request that names the shared Session goes.
+ *
+ * A request naming the Session this share carries is the source path's, whatever the tier: every tier
+ * drives it while its confined layer stands, and a share whose layer is missing refuses it as the share
+ * it is. A request naming any other Session is the child path's. Which path a request takes, and what the
+ * source path may do, are both read from the owner's published share, so that state has to carry the tier
+ * the owner set.
+ */
+
+import { mkdtempSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it, onTestFinished } from 'vitest'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import { publishedShareState, type OwnerShare } from '../src/host/share-host.ts'
+import { readerWriteRefusal, type ViewerAccessFacts } from '../src/host/viewer-access-policy.ts'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+import type { ViewerCallRequest } from '../src/viewer-channel.ts'
+import { readerConnection } from './viewer-read-peers.ts'
+
+const creator = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_viewer' }
+const source = 'session-shared'
+
+/** Temporary state directories this spec created, removed after each test. */
+const temporary: string[] = []
+
+afterEach(() => {
+  for (const directory of temporary.splice(0)) rmSync(directory, { recursive: true, force: true })
+})
+
+/** One share this host published, with everything a request decision reads. */
+function ownerShare(mode: OwnerShare['sessionMode']): OwnerShare {
+  return {
+    shareId: 'share-1',
+    sessionId: source,
+    sessionTitle: 'Shared',
+    accessMode: 'open',
+    link: 'https://relay.example.test/liveshare/s/share-1',
+    relay: 'https://relay.example.test',
+    gatewayToken: 'gateway-token',
+    allowedSubjectIds: [],
+    revision: 1,
+    createdAt: '2026-09-12T00:00:00.000Z',
+    allowsFork: true,
+    sessionMode: mode,
+    online: true,
+  }
+}
+
+/** One `session/prompt` as the viewer client sends it, naming the Session it drives. */
+function promptRequest(rpcId: string): ViewerCallRequest {
+  return {
+    op: 'call',
+    path: '/api/session/prompt',
+    body: {
+      type: 'client-request',
+      rpcId,
+      method: 'session/prompt',
+      payload: {
+        args: {
+          request: {
+            requestId: 'req-1',
+            sessionId: source,
+            mode: 'queue',
+            content: [{ type: 'text', text: 'drive the source' }],
+          },
+        },
+      },
+    },
+  }
+}
+
+/** One `session/cancel` naming the shared Session. */
+function cancelRequest(rpcId: string): ViewerCallRequest {
+  return {
+    op: 'call',
+    path: '/api/session/cancel',
+    body: { type: 'client-request', rpcId, method: 'session/cancel', payload: { args: { request: { sessionId: source } } } },
+  }
+}
+
+/**
+ * One viewer-read service over a share, with the owner's dispatch recorded; the write rule is this
+ * package's `share-viewer` policy rule over the same share state.
+ */
+function service(mode: OwnerShare['sessionMode'], options: {
+  readonly confined?: () => boolean
+  readonly prepareSource?: (sessionId: string) => Promise<void>
+  readonly refusal?: () => string | undefined
+  readonly admitted?: (actor: typeof creator) => boolean
+  /** The share's mode as the authority reports it right now; omitted means the mode the service was built with. */
+  readonly mode?: () => OwnerShare['sessionMode']
+} = {}) {
+  const files = mkdtempSync(join(tmpdir(), 'liveshare-routing-'))
+  temporary.push(files)
+  const dispatched: unknown[] = []
+  const prepared: string[] = []
+  const owner = readerConnection(async (request) => {
+    dispatched.push(await request.json().catch(() => undefined))
+    return Response.json({ result: { ok: true, value: { sessionId: source } } })
+  })
+  onTestFinished(owner.dispose)
+  const forks = new ForkRegistry(join(files, 'forks.json'))
+  const shareState = () => publishedShareState(ownerShare(options.mode?.() ?? mode))
+  const sourceConfined = () => options.confined?.() ?? true
+  const admitted = (actor: typeof creator) => options.admitted?.(actor) ?? true
+  const accessFacts: ViewerAccessFacts = {
+    share: shareState,
+    viewerAdmitted: (_shareId, actor) => admitted(actor),
+    sourceConfined,
+    forks,
+    workspaces: () => [],
+    declaredCapabilities: () => [],
+  }
+  const read = createViewerReadService({
+    connection: owner.connection,
+    sharedSessionId: () => source,
+    forkStateOf: shareState,
+    sourceConfined,
+    viewerStillAdmitted: (_shareId, actor) => admitted(actor),
+    sourceRefusal: () => options.refusal?.(),
+    prepareSource: (sessionId) => {
+      prepared.push(sessionId)
+      return options.prepareSource?.(sessionId) ?? Promise.resolve()
+    },
+    writeRefusal: (viewer, action, sessionId, concrete) => readerWriteRefusal(accessFacts, viewer, action, sessionId, concrete),
+    forks,
+  })
+  return { read, dispatched, prepared, owner }
+}
+
+describe('the share state one request is decided against', () => {
+  it('carries the mode the owner set', () => {
+    expect(publishedShareState(ownerShare('write'))).toMatchObject({
+      shareId: 'share-1',
+      sessionId: source,
+      allowsFork: true,
+      viewerAdmitted: true,
+      stopped: false,
+      sessionMode: 'write',
+    })
+    expect(publishedShareState(ownerShare('view')).sessionMode).toBe('view')
+  })
+})
+
+describe('a prompt that names the shared Session', () => {
+  it('refuses a revoked viewer’s source prompt before preparation', async () => {
+    const { read, dispatched, prepared } = service('write', { admitted: actor => actor.subjectId !== creator.subjectId })
+    try {
+      expect(await read.answer('share-1', promptRequest('rpc-revoked'), creator))
+        .toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+      expect(prepared).toEqual([])
+      expect(dispatched).toEqual([])
+      expect((await read.answer('share-1', promptRequest('rpc-revoked'), { ...creator, subjectId: 'other' })).status)
+        .toBe(200)
+      expect(dispatched).toHaveLength(1)
+    } finally {
+      read.close()
+    }
+  })
+
+  it('refuses a revoked viewer’s source cancel, and dispatches an admitted one to the owner’s Gateway', async () => {
+    const { read, dispatched, prepared, owner } = service('write', {
+      admitted: actor => actor.subjectId !== creator.subjectId,
+    })
+    const other = { ...creator, subjectId: 'other' }
+    const admitted = cancelRequest('rpc-admitted')
+    try {
+      expect(await read.answer('share-1', cancelRequest('rpc-revoked'), creator))
+        .toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+      expect(dispatched).toEqual([])
+      // The cancel travels the same standard dispatch a prompt does: the owner's Gateway receives it as
+      // the reader's own Peer and decides it against the same policy.
+      expect(await read.answer('share-1', admitted, other)).toMatchObject({
+        status: 200,
+        body: { result: { ok: true, value: { sessionId: source } } },
+      })
+      expect(dispatched).toEqual([admitted.body])
+      expect(owner.principalOf(0)).toEqual({ kind: 'share-viewer', shareId: 'share-1', actor: other })
+      // No preparation is needed: the share's confinement is already usable here.
+      expect(prepared).toEqual([])
+    } finally {
+      read.close()
+    }
+  })
+
+  it('rechecks a viewer’s access after preparing the source for a prompt', async () => {
+    let admitted = true
+    let confined = false
+    const { read, dispatched, prepared } = service('write', {
+      admitted: () => admitted,
+      confined: () => confined,
+      prepareSource: () => {
+        admitted = false
+        confined = true
+        return Promise.resolve()
+      },
+    })
+    try {
+      expect(await read.answer('share-1', promptRequest('rpc-preparing'), creator))
+        .toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+      expect(prepared).toEqual([source])
+      expect(dispatched).toEqual([])
+    } finally {
+      read.close()
+    }
+  })
+
+  it('reaches the owner unchanged, as the reader’s Peer, when the share is a write share', async () => {
+    const { read, dispatched, owner } = service('write')
+    const request = promptRequest('rpc-write')
+
+    const answer = await read.answer('share-1', request, creator)
+
+    expect(answer.status).toBe(200)
+    // The requester is the Peer the call speaks for; the body carries nothing the reader did not send.
+    expect(dispatched).toEqual([request.body])
+    expect(owner.peers).toHaveLength(1)
+    expect(owner.principalOf(0)).toEqual({ kind: 'share-viewer', shareId: 'share-1', actor: creator })
+    read.close()
+  })
+
+  it('refuses the prompt when the host could not confine the shared session', async () => {
+    const { read, dispatched, prepared } = service('write', {
+      confined: () => false,
+      refusal: () => 'tool-unavailable',
+    })
+
+    const answer = await read.answer('share-1', promptRequest('rpc-unconfined'), creator)
+
+    // A write share whose Session carries no usable confined layer is refused by name: the viewer's input
+    // must never reach the owner's own tools because a limit could not be installed.
+    expect(answer).toMatchObject({ status: 403, body: { error: 'source-write-unavailable' } })
+    expect(dispatched).toHaveLength(0)
+    // The host tried the owner-service preparation that installs a layer before refusing, so a restarted
+    // host gets one chance to become able to serve this request.
+    expect(prepared).toEqual([source])
+    // The refusal says what it knows: the Session was named, the preparation was attempted, and the failure
+    // is the deployment's missing tool rather than a request that was never prepared.
+    expect(answer.body).toMatchObject({
+      prepared: true,
+      session: 'known',
+      reason: 'tool-unavailable',
+    })
+    read.close()
+  })
+
+  it('refuses a prompt without dispatching when the share loses its confined layer while the source is prepared', async () => {
+    let mode: OwnerShare['sessionMode'] = 'write'
+    const confined = false
+    const { read, dispatched, prepared } = service('write', {
+      confined: () => confined,
+      // The owner demotes the share in the same turn the layer lands — after the authorization this
+      // request was admitted under — and the layer itself is lost with it.
+      prepareSource: () => {
+        mode = 'view'
+        return Promise.resolve()
+      },
+      mode: () => mode,
+    })
+
+    const answer = await read.answer('share-1', promptRequest('rpc-demoted'), creator)
+
+    // The demotion is read again after the preparation and refuses before the Session runs anything: the
+    // view tier still drives, but no layer confines this Session.
+    expect(answer).toMatchObject({ status: 403, body: { error: 'source-write-unavailable' } })
+    expect(prepared).toEqual([source])
+    expect(dispatched).toHaveLength(0)
+    read.close()
+  })
+
+  it('drives the shared Session at the view tier once its confined layer is installed', async () => {
+    let mode: OwnerShare['sessionMode'] = 'write'
+    let confined = false
+    const { read, dispatched, prepared } = service('write', {
+      confined: () => confined,
+      // The owner narrows the share to the view tier in the same turn the layer lands: both tiers drive.
+      prepareSource: () => {
+        confined = true
+        mode = 'view'
+        return Promise.resolve()
+      },
+      mode: () => mode,
+    })
+
+    const answer = await read.answer('share-1', promptRequest('rpc-view'), creator)
+
+    expect(answer.status).toBe(200)
+    expect(prepared).toEqual([source])
+    expect(dispatched).toHaveLength(1)
+    read.close()
+  })
+
+  it('prepares the source through the owner service, and serves it once the layer is installed', async () => {
+    let confined = false
+    const { read, dispatched, prepared } = service('write', {
+      confined: () => confined,
+      // Preparing the source Session is what makes the host's pre-publication step install the layer.
+      prepareSource: () => {
+        confined = true
+        return Promise.resolve()
+      },
+    })
+
+    const answer = await read.answer('share-1', promptRequest('rpc-cold'), creator)
+
+    expect(answer.status).toBe(200)
+    expect(prepared).toEqual([source])
+    expect(dispatched).toHaveLength(1)
+    read.close()
+  })
+
+  it('names the share’s own Session as the target, not a missing fork child', async () => {
+    // This Session belongs to the share, so the fork registry's "not a fork of a share" never applies to
+    // it: at the view tier the source Session is prepared and driven like any other tier's.
+    let confined = false
+    const { read, dispatched, prepared } = service('view', {
+      confined: () => confined,
+      prepareSource: () => {
+        confined = true
+        return Promise.resolve()
+      },
+    })
+
+    const answer = await read.answer('share-1', promptRequest('rpc-view-tier'), creator)
+
+    expect(answer.status).toBe(200)
+    expect(prepared).toEqual([source])
+    expect(dispatched).toHaveLength(1)
+    read.close()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/three-mode-profile-base.e2e.ts b/packages/experimental/liveshare/tests/three-mode-profile-base.e2e.ts
new file mode 100644
index 0000000000..10bcc4a691
--- /dev/null
+++ b/packages/experimental/liveshare/tests/three-mode-profile-base.e2e.ts
@@ -0,0 +1,134 @@
+/**
+ * Minimal real-profile base for the three-mode acceptance driver.
+ *
+ * A normal `dsh` profile starts with real Session, controller, Agent, permissions and file tools in
+ * a private temp home; one completed turn runs through that pipeline with a deterministic keyless
+ * model, and the real `write` tool must have created a file inside the run's workspace before every
+ * resource is reclaimed. Only the model is a fixture: execution, authorization, the controller and
+ * the tools are the shipped ones, under the default permission configuration.
+ *
+ * The mode cases (view / write, prefix selection, narrowing, out-of-scope files)
+ * attach on top of this base and are not claimed here.
+ */
+
+import { mkdir, mkdtemp, readFile, readdir, rm, stat, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { fileURLToPath, pathToFileURL } from 'node:url'
+import { execa } from 'execa'
+import { describe, expect, it } from 'vitest'
+import { resolveExampleLaunch } from '@deepseek-ai/dsh-loader-smoke'
+
+const dshBinScript = fileURLToPath(new URL('../../../../apps/cli/src/bin.ts', import.meta.url))
+const tsconfigPath = fileURLToPath(new URL('../../../../tsconfig.json', import.meta.url))
+const fixturePlugin = pathToFileURL(fileURLToPath(new URL('./fixtures/base-llm.mjs', import.meta.url))).href
+
+/** One `dsh` run against the private home; the model is the only fixture. */
+async function run(cwd: string, home: string, args: readonly string[]) {
+  const launch = resolveExampleLaunch({
+    srcBin: dshBinScript,
+    configArgs: ['--profile', 'headless', ...args],
+    tsconfigPath,
+    // Source diagnostics use the hook the launch contract names; artifact acceptance uses built lib.
+    sourceImport: 'tsx/esm',
+    env: {
+      DSH_HOME: home,
+      DSH_AGENTS_HOME: join(cwd, '.agents'),
+      DSH_TELEMETRY_DISABLED: '1',
+      DEEPSEEK_API_KEY: '',
+      NODE_OPTIONS: [
+        process.env.NODE_OPTIONS,
+        '--disable-warning=ExperimentalWarning',
+        '--disable-warning=MODULE_TYPELESS_PACKAGE_JSON',
+      ].filter(Boolean).join(' '),
+    },
+  })
+  return await execa(launch.command, launch.args, {
+    cwd,
+    env: launch.env,
+    input: '',
+    timeout: 120_000,
+    killSignal: 'SIGKILL',
+    reject: false,
+  })
+}
+
+/** Sanitized session facts: event types, tool names, and whether the target file exists. */
+async function observe(sessions: string, cwd: string) {
+  const files = (await readdir(sessions, { recursive: true })).filter(file => file.endsWith('.jsonl'))
+  const records = files.length === 0
+    ? []
+    : (await readFile(join(sessions, files[0]!), 'utf8')).split('\n').filter(Boolean)
+      .map(line => JSON.parse(line) as {
+        type?: string
+        sessionId?: string
+        data?: unknown
+        id?: string
+        parentSession?: string
+      })
+  const target = await stat(join(cwd, 'note.txt')).then(() => true, () => false)
+  // The physical header line carries `id`; a session without `parentSession` is the root one.
+  const headers = records.filter(record => record.type === 'session')
+  return {
+    files,
+    records,
+    eventTypes: records.map(record => record.type),
+    toolNames: records.filter(record => record.type === 'tool/call')
+      .map(record => (record.data as { name?: string } | undefined)?.name),
+    targetWritten: target,
+    rootSessionId: headers.find(header => header.parentSession === undefined)?.id,
+  }
+}
+
+describe('three-mode acceptance: real-profile base', () => {
+  it('completes one real turn, writes through the real tool, and reclaims the workspace', async () => {
+    const cwd = await mkdtemp(join(tmpdir(), 'liveshare-profile-'))
+    try {
+      const home = join(cwd, '.dsh')
+      const sessions = join(home, 'sessions')
+      const profileDir = join(home, 'profiles', 'headless')
+      await mkdir(profileDir, { recursive: true })
+      await writeFile(join(profileDir, 'package.json'), JSON.stringify({
+        name: 'dsh-profile-headless',
+        private: true,
+        dependencies: { '@deepseek-ai/dsh-experimental-liveshare': 'workspace:^' },
+        dsh: { profile: { bundles: ['@deepseek-ai/dsh-base', '@deepseek-ai/dsh-headless'] } },
+      }, undefined, 2) + '\n')
+      await writeFile(join(profileDir, 'cordis.patch.yml'), [
+        '- id: llm-deepseek',
+        '  disabled: true',
+        '- id: session-persistence-jsonl',
+        '  config:',
+        `    root: '${sessions}'`,
+        '    compression: none',
+        '- insert:',
+        '    - id: base-fixture-llm',
+        `      name: '${fixturePlugin}'`,
+        '',
+      ].join('\n'))
+
+      const first = await run(cwd, home, ['写一个 note.txt'])
+      const after = await observe(sessions, cwd)
+      const seen = `timedOut=${String(first.timedOut)} signal=${String(first.signal)} exit=${String(first.exitCode)}`
+        + `\nstdout:\n${first.stdout}\nstderr:\n${first.stderr}`
+        + `\nevents=${after.eventTypes.join(',')}\ntools=${after.toolNames.join(',')}`
+        + `\ntargetWritten=${String(after.targetWritten)}`
+      // The three process facts are asserted separately: a timeout is not an exit code.
+      expect(first.timedOut, seen).toBe(false)
+      expect(first.signal, seen).toBeUndefined()
+      expect(first.exitCode, seen).toBe(0)
+      expect(first.stdout).toContain('BASE_TURN_2')
+      expect(after.toolNames).toContain('write')
+      expect(after.targetWritten, seen).toBe(true)
+      expect(await readFile(join(cwd, 'note.txt'), 'utf8')).toContain('hello from the real write tool')
+
+      // A second user turn needs this CLI's real continuation mechanism; `--resume` is not an
+      // option here, so the base claims one real turn plus the real tool side effect only.
+      expect(typeof after.rootSessionId, seen).toBe('string')
+      expect(after.eventTypes).toContain('user/message')
+    } finally {
+      // Every resource this case owns lives under `cwd`: private home, profile, workspace, logs.
+      await rm(cwd, { recursive: true, force: true })
+    }
+  }, 300_000)
+})
diff --git a/packages/experimental/liveshare/tests/three-mode-web-base.e2e.ts b/packages/experimental/liveshare/tests/three-mode-web-base.e2e.ts
new file mode 100644
index 0000000000..e6a358de1b
--- /dev/null
+++ b/packages/experimental/liveshare/tests/three-mode-web-base.e2e.ts
@@ -0,0 +1,158 @@
+/**
+ * Real web-profile base for the three-mode acceptance driver.
+ *
+ * One isolated `dsh web` instance answers over its own HTTP carrier; two prompts really run against
+ * a real Session, controller, and tool executor behind a keyless deterministic model route. The
+ * three viewer mode cases attach on top of this same harness.
+ */
+
+import { readFile } from 'node:fs/promises'
+import { join } from 'node:path'
+import { describe, expect, it } from 'vitest'
+import { bootWebOwner, openStream, redact, wireList, wireObject, type Wire } from './three-mode-web-harness.ts'
+
+describe('three-mode acceptance: real web-profile base', () => {
+  // A flake here is a real failure of the base, so the driver never retries it.
+  it('drives two prompts through one real Session', { timeout: 150_000, retry: 0 }, async () => {
+    const owner = await bootWebOwner()
+    const sessionId = await owner.createSession()
+
+    // The two prompts are separated by the first turn's real end, not by a promise receipt.
+    await owner.prompt(sessionId, 'NO_TOOL', 'acceptance-turn-1')
+
+    // Real stream observation: session/control's first frame is the baseline (queues/jobs/projections).
+    const control = await openStream({
+      origin: owner.origin,
+      cookie: owner.cookie,
+      endpoint: 'session/control',
+      args: {},
+      until: frame => frame.type === 'item' && frame.value?.type === 'baseline',
+      timeoutMs: 15_000,
+    })
+    await control.close()
+    const baseline = control.frames.find(frame => frame.value?.type === 'baseline')?.value
+    const queues = baseline?.value?.queues
+    const projections = baseline?.value?.projections
+    const jobEntry = baseline?.value?.jobs?.[sessionId]
+    const queueRow = queues?.[sessionId]
+    owner.facts.push(
+      `controlQueueLen=${Array.isArray(queueRow) ? String(wireList(queueRow).length) : 'n/a'}`,
+      `controlJobHere=${JSON.stringify(jobEntry ?? null).slice(0, 240)}`,
+      `controlAsOfSeq=${String(projections?.[sessionId]?.asOfSeq ?? 'n/a')}`,
+    )
+
+    // The mux carrier keeps delivering gap-free live events after its opening snapshot, so this
+    // observes the turn as it really ends rather than reading a settled file.
+    const follow = await openStream({
+      origin: owner.origin,
+      cookie: owner.cookie,
+      endpoint: 'session/follow',
+      args: { request: { address: { kind: 'session', sessionId }, maxMessages: 200 } },
+      until: (_frame, frames) => followRecords(frames).some(carries('turn/end')),
+      timeoutMs: 60_000,
+    })
+    await follow.close()
+    const followed = followRecords(follow.frames)
+    // A turn/end record carries `{turn, reason}`; the reason's `kind` is the only outcome.
+    const followTurnEnds = followed.filter(carries('turn/end')).map((record) => {
+      const reason = wireObject(record?.event?.data?.reason)
+      const reasonError = reason?.error
+      const error = reasonError === undefined
+        ? ''
+        : ` error=${redact(JSON.stringify(reasonError)).slice(0, 200)}`
+      return `turn=${String(record?.event?.data?.turn ?? 'n/a')}`
+        + ` reason=${reason?.kind ?? 'n/a'}${error}`
+    })
+    const assistantTexts = followed.filter(carries('assistant/message'))
+      .flatMap(record => wireList(record?.event?.data?.message?.content))
+      .filter((block: Wire) => block?.type === 'text')
+      .map((block: Wire) => String(block.text))
+    owner.facts.push(
+      `followFrameCount=${String(follow.frames.length)}`,
+      `followRecordCount=${String(followed.length)}`,
+      // Every event kind present: a completed turn with no step or assistant text is not success.
+      `followKinds=${JSON.stringify([...new Set(followed.map(kindOf))].slice(0, 16))}`,
+      `followTurnEnds=${JSON.stringify(followTurnEnds)}`,
+      `followStepCount=${String(followed.filter(carries('step/start')).length)}`,
+      `followUserMessages=${String(followed.filter(carries('user/message')).length)}`,
+      `followAssistantTexts=${JSON.stringify(assistantTexts).slice(0, 200)}`,
+    )
+    expect(followTurnEnds.length, "turn 1's turn/end on the live follow stream").toBe(1)
+    expect(followTurnEnds[0]).toContain('reason=completed')
+    // A completed turn alone proves neither a model call nor an answer: agent-loop completes an
+    // initial step with no messages by returning early, without ever calling the model.
+    expect(followed.filter(carries('step/start')).length, 'turn 1 opened a model step')
+      .toBeGreaterThan(0)
+    expect(assistantTexts.join(''), 'turn 1 assistant text from the deterministic model')
+      .toContain('BASE_NO_TOOL_OK')
+    expect(assistantTexts.join(''), 'no fixture loop marker').not.toContain('LOOPED')
+
+    // The same turn as the durable log records it, selected by this Session's header id.
+    const firstTurn = await owner.waitFor('turn 1 to end',
+      records => records.filter(record => record.type === 'turn/end').length >= 1)
+    const firstEnd = firstTurn.filter(record => record.type === 'turn/end')
+    expect(firstEnd.length, 'turn 1 ended exactly once on disk').toBe(1)
+    expect(firstEnd[0]?.data?.reason?.kind, JSON.stringify(firstEnd[0]?.data?.reason ?? {}).slice(0, 300))
+      .toBe('completed')
+
+    await owner.prompt(sessionId, 'WRITE_FILE', 'acceptance-turn-2')
+    const records = await owner.waitFor('turn 2 to end',
+      candidates => candidates.filter(record => record.type === 'turn/end').length >= 2)
+
+    // Exact facts, not lower bounds: two completed turns and one successful write.
+    const turnEnds = records.filter((record: Wire) => record.type === 'turn/end')
+    expect(turnEnds.length, 'total turn/end records').toBe(2)
+    expect(turnEnds.every((record: Wire) => record.data?.reason?.kind === 'completed'),
+      'every turn end reports a completed reason').toBe(true)
+    const writeCalls = records.filter(record => record.type === 'tool/call' && record.data?.name === 'write')
+    expect(writeCalls.length, 'exactly one write call').toBe(1)
+    // Field-by-field: the result message carries the call's own id and is not an error.
+    const writeCallId = writeCalls[0]?.data?.callId
+    expect(typeof writeCallId, 'write call id').toBe('string')
+    const results = records.filter((record: Wire) => record.type === 'tool/result')
+      .map((record: Wire) => record.data?.message)
+    const mine = results.filter((message: Wire | undefined) => message?.toolCallId === writeCallId)
+    expect(mine.length, 'one result message for the write call').toBe(1)
+    expect(mine[0]?.isError, 'the write result is not an error').toBe(false)
+    expect(JSON.stringify(records).includes('LOOPED'), 'fixture loop marker').toBe(false)
+    const bytes = await readFile(join(owner.cwd, 'note.txt'))
+    expect(bytes.toString('utf8')).toBe('hello from the real write tool\n')
+    // Reported, not asserted: this is the evidence a reader checks against the claims above.
+    console.log([
+      '--- three-mode web base facts ---',
+      `sessionId=${sessionId}`,
+      `turnEndsOnDisk=${JSON.stringify(turnEnds.map((record: Wire) => ({
+        turn: record.data?.turn, reason: record.data?.reason?.kind,
+      })))}`,
+      `writeCallId=${String(writeCallId)} writeResultIsError=${String(mine[0]?.isError)}`,
+      `note.txt=${JSON.stringify(bytes.toString('utf8'))} bytes=${String(bytes.byteLength)}`,
+      `stderr=${redact(owner.stderr().slice(-300)) || '<empty>'}`,
+      ...owner.facts,
+      'fixtureAdapterCalls:',
+      redact(await owner.fixtureCalls()).trimEnd(),
+      '--- end facts ---',
+    ].join('\n'))
+  })
+})
+
+/** Event name one follow record carries; the carrier nests the durable event under `event`. */
+function kindOf(record: Wire): string {
+  return record?.event?.type ?? record?.type ?? 'unknown'
+}
+
+/** Predicate for one durable event name on a follow record. */
+function carries(type: string): (record: Wire) => boolean {
+  return record => kindOf(record) === type
+}
+
+/** Every durable record a follow socket delivered: the opening snapshot, then live events. */
+function followRecords(frames: readonly Wire[]): Wire[] {
+  const records: Wire[] = []
+  for (const frame of frames) {
+    const value = frame.value
+    if (value === undefined) continue
+    if (value.type === 'snapshot') records.push(...wireList(value.records))
+    else if (value.type === 'event') records.push(value)
+  }
+  return records
+}
diff --git a/packages/experimental/liveshare/tests/three-mode-web-harness.ts b/packages/experimental/liveshare/tests/three-mode-web-harness.ts
new file mode 100644
index 0000000000..bf88afecac
--- /dev/null
+++ b/packages/experimental/liveshare/tests/three-mode-web-harness.ts
@@ -0,0 +1,929 @@
+/**
+ * Isolated real `dsh web` instance for the three-mode acceptance driver.
+ *
+ * The harness boots the shipped web profile in a private temp home and workspace and exposes the
+ * shipped HTTP carrier. The model route is the deterministic keyless fixture beside this module;
+ * execution, authorization, and the controller are the real ones. Nothing here reads a developer
+ * profile, and nothing reaches a developer's running instance or its state.
+ */
+
+import { mkdir, mkdtemp, readFile, readdir, rm, stat, symlink, writeFile } from 'node:fs/promises'
+import { createHash } from 'node:crypto'
+import { connect } from 'node:net'
+import { tmpdir } from 'node:os'
+import { dirname, join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import {
+  parseRemoteStreamServerMessage,
+  type RemoteStreamServerMessage,
+} from '@deepseek-ai/dsh-api-gateway/src/stream-protocol.ts'
+import { execa } from 'execa'
+import { expect, onTestFinished } from 'vitest'
+import { resolveExampleLaunch } from '@deepseek-ai/dsh-loader-smoke'
+import { WebSocket } from 'ws'
+
+const dshBinScript = fileURLToPath(new URL('../../../../apps/cli/src/bin.ts', import.meta.url))
+const tsconfigPath = fileURLToPath(new URL('../../../../tsconfig.json', import.meta.url))
+const fixtureName = fileURLToPath(new URL('./fixtures/base-llm.mjs', import.meta.url))
+const repositoryRoot = fileURLToPath(new URL('../../../../', import.meta.url))
+
+/**
+ * One decoded JSON object read from the real HTTP and mux carriers, or from a durable Session file.
+ *
+ * This driver reads envelopes the packages under test own, so it declares every field it inspects and
+ * leaves each optional: a carrier that omits one reads as `undefined`. A field this declaration does not
+ * name has to be declared before it can be read, which keeps a renamed carrier field from passing as a
+ * silently missing answer.
+ */
+export interface Wire {
+  readonly type?: string
+  readonly streamId?: string
+  readonly rpcId?: string
+  readonly method?: string
+  readonly seq?: number
+  readonly turn?: number
+  readonly id?: string
+  readonly name?: string
+  readonly arguments?: unknown
+  readonly text?: string
+  readonly kind?: string
+  readonly code?: string
+  readonly callId?: string
+  readonly toolCallId?: string
+  readonly isError?: boolean
+  readonly ok?: boolean
+  readonly opened?: boolean
+  readonly pending?: boolean
+  readonly sessionId?: string
+  readonly shareId?: string
+  readonly sessionMode?: string
+  readonly sessionModeReason?: string
+  readonly sessionTitle?: string
+  readonly parentSession?: string
+  readonly childSessionId?: string
+  readonly isSeeded?: boolean
+  readonly revokedAt?: string
+  readonly createdAt?: string | number
+  readonly link?: string
+  readonly asOfSeq?: number
+  /** The owner's or viewer's own verification state for one Relay address. */
+  readonly state?: string
+  readonly requestId?: string
+  readonly messageOrigin?: string
+  readonly authorizeUrl?: string
+  readonly authorizationUrl?: string
+  readonly expiresAt?: string | number
+  readonly online?: boolean
+  readonly readOnly?: boolean
+  readonly allowed?: boolean
+  readonly unsupportedPermissions?: readonly string[]
+  readonly event?: Wire
+  readonly data?: Wire
+  readonly message?: Wire
+  readonly header?: Wire
+  readonly capabilities?: Wire
+  readonly fork?: Wire
+  readonly source?: Wire
+  readonly actor?: Wire
+  readonly reason?: Wire
+  readonly error?: Wire
+  readonly failure?: Wire
+  readonly result?: Wire
+  readonly value?: Wire
+  readonly payload?: Wire
+  readonly args?: unknown
+  readonly records?: readonly Wire[]
+  readonly content?: readonly Wire[]
+  readonly shares?: readonly Wire[]
+  readonly forks?: readonly Wire[]
+  readonly queues?: Readonly<Record<string, Wire>>
+  readonly jobs?: Readonly<Record<string, Wire>>
+  readonly projections?: Readonly<Record<string, Wire>>
+}
+
+/**
+ * Read one boundary value as a decoded JSON object.
+ * @param value - Value a carrier, artifact, or fixture handed back.
+ * @returns The object, or undefined when the value is not one.
+ */
+export function wireObject(value: unknown): Wire | undefined {
+  return typeof value === 'object' && value !== null && !Array.isArray(value) ? value : undefined
+}
+
+/**
+ * Read every element one decoded JSON array holds.
+ * @param value - Value a carrier or artifact handed back.
+ * @returns The elements in order, or an empty list when the value is not an array.
+ */
+export function wireList(value: unknown): readonly Wire[] {
+  return Array.isArray(value) ? value as readonly Wire[] : []
+}
+
+/**
+ * The independent outcomes one finished app process reports.
+ *
+ * A timeout, a signal, and an exit code are separate facts, so a reader that reports one of them must
+ * read all three rather than infer one from another.
+ */
+interface ProcessOutcome {
+  readonly exitCode?: number
+  readonly signal?: string
+  readonly timedOut?: boolean
+}
+
+/** Shield every diagnostic: the app's own startup line carries a real launch token. */
+export function redact(text: string): string {
+  return text.replace(/token=[A-Za-z0-9_-]+/gu, 'token=***')
+}
+
+/**
+ * Join the assistant text one set of records carries.
+ *
+ * Both shapes the driver reads carry the same durable event: a row straight out of the artifact, and
+ * a row the follow carrier nested under `event`. An empty answer here is a fact in itself, which is
+ * why this returns text rather than asserting presence.
+ * @param rows - Durable records, or follow records wrapping them.
+ * @returns The concatenated text of every assistant text block, in order.
+ */
+export function assistantTextOf(rows: readonly Wire[]): string {
+  return rows
+    .filter(row => String((row?.event ?? row)?.type) === 'assistant/message')
+    .flatMap(row => wireList((row?.event ?? row)?.data?.message?.content))
+    .filter((block: Wire) => block?.type === 'text')
+    .map((block: Wire) => String(block.text))
+    .join('')
+}
+
+/** Names of the turn outcomes one set of records reports, in order. */
+export function turnOutcomes(rows: readonly Wire[]): string[] {
+  return rows
+    .filter(row => String((row?.event ?? row)?.type) === 'turn/end')
+    .map(row => (row?.event ?? row)?.data?.reason?.kind ?? 'n/a')
+}
+
+/** Every row one follow snapshot delivered, in order. */
+export function snapshotRecords(snapshot: Wire | undefined): Wire[] {
+  return [...wireList(snapshot?.records)]
+}
+
+/**
+ * Read the stable code out of one refusal body.
+ *
+ * The owner answers a refused read with `{ok:false, error:{code, message, details}}` and a refused
+ * viewer write with `{error: code, message}`, so both forms are read here rather than at each case.
+ * @param body - Refusal body the owner (or the Relay) wrote back.
+ * @returns The code, or undefined when the body names none.
+ */
+export function refusalCode(body: unknown): string | undefined {
+  const error = wireObject(body)?.error
+  if (typeof error === 'string' && error !== '') return error
+  const code = error?.code
+  return typeof code === 'string' && code !== '' ? code : undefined
+}
+
+/** The message one refusal body carries, or the empty string when it carries none. */
+export function refusalMessage(body: unknown): string {
+  const record = wireObject(body)
+  const message = record?.message
+  if (typeof message === 'string') return message
+  const nested = record?.error?.message
+  return typeof nested === 'string' ? nested : ''
+}
+
+/** One open logical stream on the shipped mux carrier and the frames it delivered. */
+export interface StreamObservation {
+  /** Every frame this socket delivered for the stream it opened, in arrival order. */
+  readonly frames: Wire[]
+  /** Close the socket and wait for it to be gone. */
+  close(): Promise<void>
+}
+
+/** Options one stream observation opens with. */
+export interface OpenStreamOptions {
+  /** Origin the app serves the mux carrier on. */
+  readonly origin: string
+  /** Launch cookie the app issued. */
+  readonly cookie: string
+  /** Canonical Remote endpoint or gateway-owned stream name. */
+  readonly endpoint: string
+  /** Decoded carrier payload. */
+  readonly args: object
+  /** Stop waiting once this frame arrives; later frames keep collecting until the caller closes. */
+  readonly until?: (frame: Wire, frames: readonly Wire[]) => boolean
+  readonly timeoutMs?: number
+}
+
+/**
+ * Open one logical stream through the real mux carrier and the gateway's own frame parser.
+ *
+ * The parser is the shipped one, so a frame this gateway would reject cannot pass as progress, and
+ * only frames carrying this stream's own id are accepted.
+ * @param options - Origin, cookie, endpoint, payload, and the stopping condition.
+ * @returns The observation, already stopped at `until` or failed with the carrier's own error.
+ */
+export async function openStream(options: OpenStreamOptions): Promise<StreamObservation> {
+  const streamId = `acceptance-${options.endpoint.replace(/\//gu, '-')}-${String(Date.now())}`
+    + `-${Math.random().toString(36).slice(2)}`
+  const socket = new WebSocket(`${options.origin.replace(/^http/u, 'ws')}/api/remote.mux`, {
+    headers: { cookie: options.cookie },
+  })
+  const frames: Wire[] = []
+  const closed = new Promise<void>((resolve) => { socket.once('close', () => { resolve() }) })
+  onTestFinished(async () => {
+    if (socket.readyState === WebSocket.CLOSED) return
+    socket.terminate()
+    await closed
+  })
+  const close = async (): Promise<void> => {
+    if (socket.readyState !== WebSocket.CLOSED) socket.close()
+    await closed
+  }
+  try {
+    await new Promise<void>((resolve, reject) => {
+      const timer = setTimeout(() => {
+        reject(new Error(`stream ${options.endpoint} produced no settled frame within`
+          + ` ${String(options.timeoutMs ?? 60_000)}ms; frames=${JSON.stringify(frames).slice(0, 400)}`))
+      }, options.timeoutMs ?? 60_000)
+      const settle = (error?: Error): void => {
+        clearTimeout(timer)
+        if (error === undefined) resolve()
+        else reject(error)
+      }
+      socket.once('error', (error: Error) => { settle(error) })
+      socket.on('open', () => {
+        socket.send(JSON.stringify({
+          type: 'open',
+          streamId,
+          endpoint: options.endpoint,
+          payload: { args: options.args },
+        }))
+      })
+      socket.on('message', (data: unknown) => {
+        let parsed: RemoteStreamServerMessage
+        try {
+          parsed = parseRemoteStreamServerMessage(String(data))
+        } catch (error) {
+          settle(new Error(`stream ${options.endpoint} sent an invalid frame:`
+            + ` ${String(error)} raw=${redact(String(data)).slice(0, 300)}`))
+          return
+        }
+        // Every server frame carries its stream id, and this socket opened exactly one stream.
+        if (parsed.streamId !== streamId) {
+          settle(new Error(`stream ${options.endpoint} received a frame for ${parsed.streamId}`))
+          return
+        }
+        if (parsed.type === 'error') {
+          settle(new Error(`stream ${options.endpoint} failed: ${JSON.stringify(parsed.error).slice(0, 300)}`))
+          return
+        }
+        // The shipped parser validates the frame and leaves its carried value `unknown`; this driver
+        // reads that value as decoded JSON, which is what the caller's predicates inspect.
+        const frame: Wire = parsed.type === 'item'
+          ? { type: 'item', streamId: parsed.streamId, ...(parsed.value === undefined ? {} : { value: parsed.value as Wire }) }
+          : { type: 'end', streamId: parsed.streamId }
+        frames.push(frame)
+        if (frame.type === 'end') {
+          settle(new Error(`stream ${options.endpoint} ended after ${String(frames.length)} frames`))
+          return
+        }
+        if (options.until?.(frame, frames) === true) settle()
+      })
+      socket.once('close', () => {
+        settle(new Error(`stream ${options.endpoint} socket closed before it settled;`
+          + ` frames=${JSON.stringify(frames).slice(0, 400)}`))
+      })
+    })
+  } catch (error) {
+    await close()
+    throw error
+  }
+  return { frames, close }
+}
+
+/** Options one acceptance instance boots with. */
+export interface WebOwnerOptions {
+  /** Profile bundles beyond the shipped base and web app. */
+  readonly bundles?: readonly string[]
+  /**
+   * An instance directory this boot takes over instead of creating one.
+   *
+   * A restart has to serve the same DSH home, workspace, and session logs as the process it replaces,
+   * so a resumed-session case boots the same tree twice rather than a second isolated one.
+   */
+  readonly existingCwd?: string
+  /** Extra overlay entries appended to the profile patch. */
+  readonly patchLines?: readonly string[]
+  /**
+   * Environment entries the app and its gateway worker receive. A function receives the private
+   * temp directory, so an entry may name a file inside the instance this call creates.
+   */
+  readonly env?: Readonly<Record<string, string | undefined | ((cwd: string) => string | undefined)>>
+}
+
+/** One running acceptance instance and its observations. */
+export interface WebOwner {
+  /** Private temp directory the instance owns. */
+  readonly cwd: string
+  /** Private DSH home the instance owns. */
+  readonly home: string
+  /** Origin the app serves its own page and `/api` on. */
+  readonly origin: string
+  /** Launch cookie the app issued for its own page. */
+  readonly cookie: string
+  /** Collected evidence lines a caller reports when it finishes. */
+  readonly facts: string[]
+  /** Retrieve one authenticated `/api/<endpoint>` answer. */
+  rpc(endpoint: string, args: object): Promise<Wire>
+  /** Post one raw JSON body to an `/api` path the product itself posts to. */
+  post(path: string, body: unknown): Promise<{ readonly status: number; readonly body: unknown }>
+  /**
+   * Create one Session.
+   * @param workspace - Workspace root the Session runs in; defaults to the instance's own directory.
+   * @returns The new Session's identity.
+   */
+  createSession(workspace?: string): Promise<string>
+  /** Admit one prompt and require the acknowledgement. */
+  prompt(sessionId: string, text: string, requestId: string): Promise<Wire>
+  /** Read the durable records of the generation whose header carries this Session id. */
+  records(sessionId: string): Promise<Wire[]>
+  /**
+   * Identify this Session's own generation file and hash its raw bytes.
+   *
+   * `records()` reports decoded rows; this reports the artifact on disk, which is what "unchanged"
+   * has to mean when the claim is about bytes rather than about a re-serialization.
+   */
+  rawLog(sessionId: string): Promise<{ readonly file: string; readonly sha256: string; readonly size: number }>
+  /** Sweep every durable generation until the predicate holds, then report why it never did. */
+  waitFor(label: string, predicate: (records: Wire[]) => boolean): Promise<Wire[]>
+  /** Poll one named Session's own durable log until the predicate holds, then report why it did not. */
+  waitSession(sessionId: string, label: string, predicate: (records: Wire[]) => boolean): Promise<Wire[]>
+  /** Every persisted Session whose header names this one as its parent, in file order. */
+  childIds(sourceId: string): Promise<string[]>
+  /** Every adapter call the fixture served, one line each. */
+  fixtureCalls(): Promise<string>
+  /** How many model calls the fixture has served, so a refusal can be shown to reach none. */
+  modelCalls(): Promise<number>
+  /** Everything the app wrote to stderr so far. */
+  stderr(): string
+  /**
+   * Stop this instance and prove it is quiescent: it exited on its own with no signal and no timeout,
+   * and its port refuses connections. A restart case calls this before booting its successor on the
+   * same tree; the tree itself stays until the test's own cleanup removes it.
+   */
+  stop(): Promise<void>
+}
+
+/**
+ * Boot one isolated web-profile instance and register its teardown.
+ * @param options - Extra bundles, overlay entries, and environment the instance needs.
+ * @returns The running instance and its observations.
+ */
+export async function bootWebOwner(options: WebOwnerOptions = {}): Promise<WebOwner> {
+  const cwd = options.existingCwd ?? await mkdtemp(join(tmpdir(), 'liveshare-web-'))
+  const home = join(cwd, '.dsh')
+  const sessionsRoot = join(home, 'sessions')
+  const profileDir = join(home, 'profiles', 'web')
+  // A restart reuses the tree its predecessor wrote, including the profile it composed.
+  if (options.existingCwd === undefined) await mkdir(profileDir, { recursive: true })
+  // Self-contained: the shipped bundles plus a keyless model. No user profile, personal plugin,
+  // address, or side effect enters this instance.
+  const extraBundles = [...options.bundles ?? []]
+  // A restart reuses the profile its predecessor composed, links included.
+  if (options.existingCwd === undefined) {
+    for (const bundle of extraBundles) await installBundle(profileDir, bundle)
+  }
+  if (options.existingCwd === undefined) await writeFile(join(profileDir, 'package.json'), JSON.stringify({
+    name: 'dsh-profile-web',
+    private: true,
+    dependencies: Object.fromEntries(extraBundles.map(bundle => [bundle, 'workspace:^'])),
+    dsh: {
+      profile: { bundles: ['@deepseek-ai/dsh-base', '@deepseek-ai/dsh-web-app', ...extraBundles] },
+    },
+  }, undefined, 2) + '\n')
+  if (options.existingCwd === undefined) await writeFile(join(profileDir, 'cordis.patch.yml'), [
+    '- id: llm-deepseek',
+    '  disabled: true',
+    '- id: session-persistence-jsonl',
+    '  config:',
+    `    root: '${sessionsRoot}'`,
+    '    compression: none',
+    '- insert:',
+    '    - id: base-fixture-llm',
+    `      name: '${fixtureName}'`,
+    ...options.patchLines ?? [],
+    '',
+  ].join('\n'))
+  await writeFile(join(cwd, 'README.txt'), 'workspace root for the acceptance run\n')
+  const configured = Object.fromEntries(Object.entries(options.env ?? {})
+    .map(([key, value]) => [key, typeof value === 'function' ? value(cwd) : value]))
+  const launch = resolveExampleLaunch({
+    srcBin: dshBinScript,
+    // `--port 0` lets the app pick; its own startup line carries the real origin.
+    configArgs: ['--profile', 'web', '--port', '0', '--no-open'],
+    tsconfigPath,
+    sourceImport: 'tsx/esm',
+    env: {
+      DSH_HOME: home,
+      DSH_AGENTS_HOME: join(cwd, '.agents'),
+      DSH_TELEMETRY_DISABLED: '1',
+      DEEPSEEK_API_KEY: '',
+      // Diagnostic only: the fixture appends one line per adapter call to this temp file.
+      BASE_LLM_LOG: join(cwd, 'base-llm.log'),
+      // Diagnostic only: proves the loader activated the fixture plugin at all.
+      BASE_LLM_LOADED: join(cwd, 'base-llm.loaded'),
+      NODE_OPTIONS: '--disable-warning=ExperimentalWarning --disable-warning=MODULE_TYPELESS_PACKAGE_JSON',
+      ...configured,
+    },
+  })
+  const child = execa(launch.command, launch.args, {
+    cwd,
+    env: launch.env,
+    reject: false,
+    // The child inherits only what the launch helper composed: no ambient credential leaks in.
+    extendEnv: false,
+  })
+  const facts: string[] = []
+  let stderrText = ''
+  child.stderr?.on('data', (chunk: Buffer) => { stderrText = (stderrText + chunk.toString()).slice(-8000) })
+  // Real artifact evidence: `lib` mode spawns the built bin under plain Node, never tsx source.
+  const launchBin = String(launch.args[0])
+  facts.push(`launch: mode=${process.env.DSH_EXAMPLE_MODE ?? 'src'} bin=${launchBin}`
+    + ` args=${JSON.stringify(launch.args.slice(1))} envKeys=${JSON.stringify(Object.keys(launch.env).sort())}`)
+  if (process.env.DSH_EXAMPLE_MODE === 'lib') {
+    expect(launchBin, 'built-lib launch').toContain('/lib/')
+    expect(launch.args.some(argument => argument.includes('tsx')), 'no tsx loader in lib mode').toBe(false)
+  }
+  // One instance's own process facts. `stopped` only becomes true once this process is gone and its
+  // port is refused; the tree's removal never waits on it.
+  const release: { origin?: string; stopped: boolean; lifecycle: string[] } = {
+    stopped: false,
+    lifecycle: [],
+  }
+  const stopInstance = async (): Promise<void> => {
+    if (release.stopped) return
+    child.kill('SIGTERM')
+    let timer: ReturnType<typeof setTimeout> | undefined
+    const settled = await Promise.race([
+      child.then(result => ({ result }), (error: unknown) => ({ error })),
+      new Promise<{ reason: string }>((resolve) => {
+        timer = setTimeout(() => { resolve({ reason: 'fallback' }) }, 5_000)
+      }),
+    ])
+    clearTimeout(timer)
+    let result: ProcessOutcome | undefined = 'result' in settled ? settled.result : undefined
+    const usedFallback = result === undefined
+    if (usedFallback) {
+      child.kill('SIGKILL')
+      result = await child.catch(() => undefined)
+    }
+    // The three process outcomes are separate facts; a signal is not a timeout.
+    console.log(`child exit: pid=${String(child.pid)} exitCode=${String(result?.exitCode)}`
+      + ` signal=${String(result?.signal)} timedOut=${String(result?.timedOut)}`
+      + ` fallback=${String(usedFallback)}`)
+    expect(usedFallback, 'the app needed the fallback kill').toBe(false)
+    expect(result?.timedOut, 'the app hit its own timeout').toBe(false)
+    expect(result?.exitCode, 'the app exited on its own').toBe(0)
+    expect(result?.signal, 'the app reported a signal instead of an exit').toBeUndefined()
+    // Only a refused connection proves the port is free; a timeout or a bare error does not.
+    if (release.origin !== undefined) {
+      const { port } = new URL(release.origin)
+      const outcome = await new Promise<'refused' | 'open' | 'timeout'>((resolve) => {
+        const socket = connect({ port: Number(port), host: '127.0.0.1' })
+        let settledProbe = false
+        const finish = (value: 'refused' | 'open' | 'timeout'): void => {
+          if (settledProbe) return
+          settledProbe = true
+          clearTimeout(probeTimer)
+          socket.once('close', () => { resolve(value) })
+          socket.destroy()
+        }
+        const probeTimer = setTimeout(() => { finish('timeout') }, 2_000)
+        socket.once('connect', () => { finish('open') })
+        socket.once('error', (error: NodeJS.ErrnoException) => {
+          finish(error.code === 'ECONNREFUSED' ? 'refused' : 'timeout')
+        })
+      })
+      console.log(`port release: outcome=${outcome}`)
+      expect(outcome, 'the app still accepts connections after exit').toBe('refused')
+    }
+    release.lifecycle.push('stopped')
+    release.stopped = true
+  }
+  registerTeardown(cwd, release, stopInstance)
+  // The app prints its own launch URL; the token comes from that line, never from the shell.
+  const token = await new Promise<string>((resolve, reject) => {
+    let seen = ''
+    const fail = (why: string): void => {
+      clearTimeout(timer)
+      reject(new Error(`${why}\nstdout:\n${redact(seen.slice(-1500))}\nstderr:\n${redact(stderrText.slice(-1500))}`))
+    }
+    const timer = setTimeout(() => { fail('no launch line within 90s') }, 90_000)
+    child.stdout?.on('data', (chunk: Buffer) => {
+      seen += chunk.toString()
+      const match = /(http:\/\/127\.0\.0\.1:\d+\/\?token=)([A-Za-z0-9_-]+)/u.exec(seen)
+      if (match?.[0] === undefined) return
+      clearTimeout(timer)
+      resolve(match[0])
+    })
+    // execa's result is promise-like: early exit and spawn failure both surface through it.
+    void child.then((result) => {
+      fail(`app exited early code=${String(result?.exitCode)}`)
+    }).catch((error: unknown) => {
+      fail(`spawn failed: ${error instanceof Error ? error.message : String(error)}`)
+    })
+  })
+  const origin = new URL(token).origin
+  release.origin = origin
+  const page = await fetch(token, { redirect: 'manual' })
+  expect(page.status, 'unexpected launch response').toBe(303)
+  const cookie = page.headers.getSetCookie().map(value => value.split(';')[0]).join('; ')
+  expect(cookie.length).toBeGreaterThan(0)
+  const served = await fetch(`${origin}/`, { headers: { cookie } })
+  expect(served.status).toBe(200)
+  expect(await served.text()).toContain('<html')
+
+  // The shipped HTTP carrier: POST /api/<endpoint> with the client-request envelope.
+  const rpc = async (endpoint: string, args: object): Promise<Wire> => {
+    const response = await fetch(`${origin}/api/${endpoint}`, {
+      method: 'POST',
+      headers: { 'content-type': 'application/json', cookie },
+      body: JSON.stringify({
+        type: 'client-request',
+        rpcId: `acceptance-${endpoint}-${String(Date.now())}-${Math.random().toString(36).slice(2)}`,
+        method: endpoint,
+        payload: { args },
+      }),
+    })
+    const text = await response.text()
+    if (!response.ok) throw new Error(`${endpoint} HTTP ${String(response.status)}: ${text}`)
+    return JSON.parse(text) as Wire
+  }
+  // Only a trailing partial line may be dropped; corrupt JSON in a complete frame fails.
+  const readRecords = async (file: string): Promise<Wire[]> => {
+    const text = await readFile(join(sessionsRoot, file), 'utf8')
+    const frames = text.split('\n').filter(line => line !== '')
+    const complete = text.endsWith('\n') ? frames : frames.slice(0, -1)
+    return complete.map(line => JSON.parse(line) as Wire)
+  }
+  const generations = async (): Promise<Wire[][]> => {
+    const files = (await readdir(sessionsRoot, { recursive: true })).filter(file => file.endsWith('.jsonl'))
+    return Promise.all(files.map(readRecords))
+  }
+  const headerIdOf = (records: Wire[]): unknown => records.find((record: Wire) => record.type === 'session')?.id
+  /** Read one named Session's own durable records, refusing an ambiguous match. */
+  const recordsOf = async (sessionId: string): Promise<Wire[]> => {
+    const matches = (await generations()).filter(records => headerIdOf(records) === sessionId)
+    if (matches.length > 1) throw new Error(`session matched ${String(matches.length)} generations`)
+    return matches[0] ?? []
+  }
+
+  const diagnose = async (label: string): Promise<never> => {
+    const entries = await readdir(sessionsRoot, { withFileTypes: true })
+      .then(list => list.slice(0, 20).map(entry => `${entry.isDirectory() ? 'd' : 'f'}:${entry.name}`), () => ['<unreadable>'])
+    const inner: string[] = []
+    for (const entry of await readdir(sessionsRoot, { withFileTypes: true }).catch(() => [])) {
+      if (!entry.isDirectory()) continue
+      const dir = join(sessionsRoot, entry.name)
+      for (const item of (await readdir(dir, { withFileTypes: true }).catch(() => [])).slice(0, 20)) {
+        const full = join(dir, item.name)
+        const size = await stat(full).then(value => value.size, () => -1)
+        // The sessionId entry is a directory whose inner generation file carries the events.
+        inner.push(`${item.isDirectory() ? 'd' : 'f'}:${item.name} size=${String(size)}`)
+        if (item.isDirectory()) {
+          const deep = await readdir(full).catch(() => [])
+          inner.push(`  inner=${JSON.stringify(deep.slice(0, 10))}`)
+        }
+      }
+    }
+    const loaded = await stat(join(cwd, 'base-llm.loaded')).then(() => 'loaded', () => 'absent')
+    const calls = await readFile(join(cwd, 'base-llm.log'), 'utf8').then(
+      text => redact(text).split('\n').filter(Boolean).length, () => -1)
+    throw new Error([
+      `timeout waiting for ${label}`,
+      `sessionsRootEntries=${JSON.stringify(entries)}`,
+      `sessionFilesUnderWorkspace=${JSON.stringify(inner)}`,
+      `fixtureLoadedMarker=${loaded}`,
+      `fixtureAdapterCalls=${String(calls)}`,
+      `stderr=${redact(stderrText.slice(-600))}`,
+      ...facts,
+    ].join('\n'))
+  }
+
+  return {
+    cwd,
+    home,
+    origin,
+    cookie,
+    facts,
+    rpc,
+    // The share endpoints the product's own dialog posts to take the plain body, not an envelope.
+    async post(path: string, body: unknown): Promise<{ readonly status: number; readonly body: unknown }> {
+      const response = await fetch(`${origin}${path}`, {
+        method: 'POST',
+        headers: { 'content-type': 'application/json', cookie },
+        body: JSON.stringify(body),
+      })
+      const text = await response.text()
+      return {
+        status: response.status,
+        // A host whose plugin did not mount answers plain text; keep it so the failure names itself.
+        body: text === '' ? undefined : (() => {
+          try {
+            const parsed: unknown = JSON.parse(text)
+            return parsed
+          } catch {
+            return redact(text).slice(0, 300)
+          }
+        })(),
+      }
+    },
+    async createSession(workspace?: string): Promise<string> {
+      const created = await rpc('session/create', { request: { cwd: workspace ?? cwd } })
+      const sessionId = created?.result?.value?.sessionId
+      expect(typeof sessionId, JSON.stringify(created).slice(0, 400)).toBe('string')
+      return String(sessionId)
+    },
+    async prompt(sessionId: string, text: string, requestId: string): Promise<Wire> {
+      const answer = await rpc('session/prompt', {
+        request: { requestId, sessionId, mode: 'queue', content: [{ type: 'text', text }] },
+      })
+      facts.push(`prompt ${requestId}: ${redact(JSON.stringify(answer?.result ?? answer)).slice(0, 400)}`)
+      expect(answer?.result?.ok, JSON.stringify(answer).slice(0, 400)).toBe(true)
+      return answer
+    },
+    async records(sessionId: string): Promise<Wire[]> {
+      return await recordsOf(sessionId)
+    },
+    async childIds(sourceId: string): Promise<string[]> {
+      const found: string[] = []
+      for (const records of await generations()) {
+        const header = records.find((record: Wire) => record.type === 'session')
+        if (header?.parentSession === sourceId && typeof header.id === 'string') found.push(header.id)
+      }
+      return found
+    },
+    async rawLog(sessionId: string): Promise<{
+      readonly file: string
+      readonly sha256: string
+      readonly size: number
+    }> {
+      const files = (await readdir(sessionsRoot, { recursive: true })).filter(file => file.endsWith('.jsonl'))
+      const matches: string[] = []
+      for (const file of files) {
+        // Only the header line identifies the file; the bytes this returns stay unparsed.
+        const text = await readFile(join(sessionsRoot, file), 'utf8')
+        const first = text.slice(0, text.indexOf('\n') === -1 ? text.length : text.indexOf('\n'))
+        if (headerIdOf([JSON.parse(first) as Wire]) === sessionId) matches.push(file)
+      }
+      if (matches.length !== 1) {
+        throw new Error(`session ${sessionId} matched ${String(matches.length)} generation files`)
+      }
+      const bytes = await readFile(join(sessionsRoot, matches[0] ?? ''))
+      return {
+        file: matches[0] ?? '',
+        sha256: createHash('sha256').update(bytes).digest('hex'),
+        size: bytes.byteLength,
+      }
+    },
+    async waitFor(label: string, predicate: (records: Wire[]) => boolean): Promise<Wire[]> {
+      for (let attempt = 0; attempt < 20; attempt += 1) {
+        for (const candidate of await generations()) {
+          if (predicate(candidate)) return candidate
+        }
+        await new Promise((resolve) => { setTimeout(resolve, 1_000) })
+      }
+      return await diagnose(label)
+    },
+    async waitSession(sessionId: string, label: string, predicate: (records: Wire[]) => boolean):
+    Promise<Wire[]> {
+      for (let attempt = 0; attempt < 20; attempt += 1) {
+        const records = await recordsOf(sessionId)
+        if (predicate(records)) return records
+        await new Promise((resolve) => { setTimeout(resolve, 1_000) })
+      }
+      // The row types this Session actually reached are the cheapest evidence of how far it got.
+      const reached = await recordsOf(sessionId).catch(() => [] as Wire[])
+      facts.push(`timeout on ${sessionId}: lastRows=${JSON.stringify(reached.slice(-6).map(
+        (record: Wire) => `${String(record.type)}@${String(record.seq)}`))}`
+        + ` outcomes=${JSON.stringify(reached.filter((record: Wire) => record.type === 'turn/end')
+          .map((record: Wire) => record.data?.reason?.kind))}`)
+      return await diagnose(`${label} on ${sessionId}`)
+    },
+    async fixtureCalls(): Promise<string> {
+      return await readFile(join(cwd, 'base-llm.log'), 'utf8').catch(() => '<absent>')
+    },
+    async modelCalls(): Promise<number> {
+      const text = await readFile(join(cwd, 'base-llm.log'), 'utf8').catch(() => '')
+      return text.split('\n').filter(Boolean).length
+    },
+    stderr: () => stderrText,
+    async stop(): Promise<void> {
+      // Quiescence first: exit, signal, timeout, and port release are all asserted inside, and the
+      // tree stays for the successor this case boots next.
+      await stopInstance()
+      facts.push(`stopped pid=${String(child.pid)} at ${String(Date.now())}`)
+    },
+  }
+}
+
+/**
+ * Terminate the instance, prove the port is released, then remove the tree.
+ * @param cwd - Private temp directory to remove last.
+ * @param child - The app process to terminate first.
+ * @returns A handle whose `origin` the boot fills in once the app reports it.
+ */
+function registerTeardown(
+  cwd: string,
+  state: { origin?: string; stopped: boolean; lifecycle: string[] },
+  stopInstance: () => Promise<void>,
+): void {
+  // Vitest runs these hooks in reverse registration order, so the tree's removal is registered first
+  // and therefore runs after the process is gone. Each is separate, so a failed stop still cleans up.
+  onTestFinished(() => {
+    expect(state.lifecycle, 'the instance stopped before its tree was removed')
+      .toEqual(['stopped', 'removed'])
+  })
+  onTestFinished(async () => {
+    await rm(cwd, { recursive: true, force: true })
+    const removed = await stat(cwd).then(() => false, () => true)
+    console.log(`temp tree removed: ${String(removed)}`)
+    state.lifecycle.push('removed')
+    expect(removed, 'the temp tree is gone').toBe(true)
+  })
+  onTestFinished(async () => {
+    // A process this case already stopped and proved quiescent needs nothing further.
+    if (!state.stopped) await stopInstance()
+  })
+}
+
+/**
+ * Install one workspace bundle into a profile the way `dsh plugin install` would.
+ *
+ * The profile's own `node_modules` is the second anchor bundle resolution reads, so a bundle this
+ * checkout provides has to appear there; the profile manifest declares the dependency it links.
+ * @param profileDir - Profile directory the bundle is installed into.
+ * @param packageName - Workspace package name the profile lists as a bundle.
+ */
+async function installBundle(profileDir: string, packageName: string): Promise<void> {
+  for (const group of await readdir(join(repositoryRoot, 'packages'))) {
+    for (const directory of await readdir(join(repositoryRoot, 'packages', group)).catch(() => [])) {
+      const source = join(repositoryRoot, 'packages', group, directory)
+      const manifest = JSON.parse(await readFile(join(source, 'package.json'), 'utf8').catch(() => '{}')) as Wire
+      if (manifest.name !== packageName) continue
+      const target = join(profileDir, 'node_modules', ...packageName.split('/'))
+      await mkdir(dirname(target), { recursive: true })
+      await symlink(source, target, 'dir')
+      return
+    }
+  }
+  throw new Error(`no workspace package is named ${packageName}`)
+}
+
+/** One viewer's carrier: exactly the operations the served page uses over the Relay. */
+export interface ViewerCarrier {
+  /** Post one carrier request and return the Relay's status and the owner's decoded answer. */
+  send(request: unknown): Promise<{ readonly status: number; readonly body: unknown }>
+  /** Fetch one `/api` path the way the page's Connection layer does. */
+  call(path: string, body: unknown): Promise<{ readonly status: number; readonly body: unknown }>
+  /** Open `session/follow` on one Session and return its opening snapshot frame. */
+  snapshot(sessionId: string, streamId?: number): Promise<Wire | undefined>
+}
+
+/**
+ * Build one viewer's carrier over a Relay request function.
+ *
+ * The page posts the Connection envelope its own transport builds, numbers its own logical streams,
+ * and polls them until the owner answers; this mirrors that so a case drives the product's carrier
+ * rather than a private shortcut.
+ * @param send - One `POST {basePath}/__share/rpc` request returning the Relay's status and JSON body.
+ * @returns The carrier operations a case reads through.
+ */
+export function createViewerCarrier(
+  send: (request: unknown) => Promise<{ readonly status: number; readonly body: unknown }>,
+): ViewerCarrier {
+  return {
+    send,
+    async call(path, body) {
+      return await send({ op: 'call', path, body })
+    },
+    async snapshot(sessionId, streamId = 3) {
+      const opened = await send({
+        op: 'stream-open',
+        id: streamId,
+        endpoint: 'session/follow',
+        payload: { args: { request: { address: { kind: 'session', sessionId }, maxMessages: 200 } } },
+      })
+      expect(opened.status, JSON.stringify(opened.body).slice(0, 300)).toBe(200)
+      expect(wireObject(opened.body)?.opened, JSON.stringify(opened.body).slice(0, 300)).toBe(true)
+      let snapshot: Wire | undefined
+      for (let attempt = 0; attempt < 10 && snapshot === undefined; attempt += 1) {
+        const next = await send({ op: 'stream-next', id: streamId })
+        const body = wireObject(next.body)
+        expect(body?.failure, JSON.stringify(next.body).slice(0, 300)).toBeUndefined()
+        if (body?.pending !== true) snapshot = body?.value
+      }
+      await send({ op: 'stream-cancel', id: streamId })
+      expect(snapshot?.type, 'the viewer stream carries a snapshot').toBe('snapshot')
+      return snapshot
+    },
+  }
+}
+
+/**
+ * Build the Connection envelope the page's own RPC caller posts for one endpoint.
+ * @param endpoint - Canonical Remote endpoint.
+ * @param args - Decoded carrier arguments.
+ * @param rpcId - Exact call identity, so a case can post the same logical request twice.
+ * @returns The envelope the page posts.
+ */
+export function viewerEnvelope(endpoint: string, args: object, rpcId?: string): Wire {
+  return {
+    type: 'client-request',
+    rpcId: rpcId ?? `acceptance-viewer-${endpoint}-${String(Date.now())}-${Math.random().toString(36).slice(2)}`,
+    method: endpoint,
+    payload: { args },
+  }
+}
+
+/** What one accepted share reports back to the owner host. */
+export interface PublishedShare {
+  readonly shareId: string
+  readonly sessionMode: string
+}
+
+/**
+ * Verify the owner against one Relay and publish one share through the owner's Remote.
+ *
+ * This mirrors the owner's dialog: the credential still arrives over its own sign-in route, and the
+ * share is created with the same request the page sends through `liveshareShares/create`.
+ * @param owner - Running owner instance.
+ * @param options - Session to share, the mode the owner chose, and the title to publish.
+ * @param mint - Owner credential already minted against the Relay the owner is configured for.
+ * @returns The published share's identity and the mode the owner stored.
+ */
+export async function publishShare(
+  owner: WebOwner,
+  options: { readonly sessionId: string; readonly sessionMode: string; readonly title: string; readonly allowsFork?: boolean },
+  mint: string,
+): Promise<PublishedShare> {
+  const credential = await owner.post('/api/liveshare.ownerCredential', { credential: mint })
+  // A host whose plugin failed to mount answers these paths with a plain 404, so the app's own
+  // diagnostics travel with the failure rather than being discovered later.
+  const why = (answer: { readonly status: number; readonly body: unknown }): string =>
+    `status=${String(answer.status)} body=${JSON.stringify(answer.body).slice(0, 300)}`
+    + ` stderr=${redact(owner.stderr().slice(-800)) || '<empty>'}`
+  expect(credential.status, why(credential)).toBe(200)
+  const created = await owner.rpc('liveshareShares/create', {
+    request: {
+      sessionId: options.sessionId,
+      sessionTitle: options.title,
+      accessMode: 'open',
+      sessionMode: options.sessionMode,
+      ...(options.allowsFork === undefined ? {} : { allowsFork: options.allowsFork }),
+    },
+  })
+  const createdBody = wireObject(wireObject(created?.result)?.value)
+  const createdWhy = `result=${JSON.stringify(created).slice(0, 400)}`
+    + ` stderr=${redact(owner.stderr().slice(-800)) || '<empty>'}`
+  expect(createdBody, createdWhy).toBeDefined()
+  const shareId = String(createdBody?.shareId)
+  expect(shareId.length, 'the share reports an id').toBeGreaterThan(0)
+  expect(createdBody?.sessionMode, 'the share carries the mode the owner chose')
+    .toBe(options.sessionMode)
+  return { shareId, sessionMode: String(createdBody?.sessionMode) }
+}
+
+/** The Relay request function one viewer carrier posts through. */
+export interface RelayRequests {
+  request(path: string, options: RequestInit): Promise<Response>
+}
+
+/**
+ * Build one viewer's carrier for a share it signed in to.
+ * @param relay - Running Relay fixture.
+ * @param shareId - Share this page was served for.
+ * @param cookie - Viewer session cookie from the Relay's own login.
+ * @returns The carrier the page's protocol uses.
+ */
+export function relayCarrier(relay: RelayRequests, shareId: string, cookie: string): ViewerCarrier {
+  return createViewerCarrier(async (request) => {
+    const response = await relay.request(`/__share/rpc?shareId=${encodeURIComponent(shareId)}`, {
+      method: 'POST',
+      headers: { 'content-type': 'application/json', cookie },
+      body: JSON.stringify(request),
+    })
+    // A Relay that dropped the share answers plain text; keep it so the caller names the refusal.
+    const text = await response.text()
+    return {
+      status: response.status,
+      body: (() => {
+        try {
+          const parsed: unknown = JSON.parse(text)
+          return parsed
+        } catch {
+          return redact(text).slice(0, 300)
+        }
+      })(),
+    }
+  })
+}
diff --git a/packages/experimental/liveshare/tests/tool-call.ts b/packages/experimental/liveshare/tests/tool-call.ts
new file mode 100644
index 0000000000..e93a651609
--- /dev/null
+++ b/packages/experimental/liveshare/tests/tool-call.ts
@@ -0,0 +1,39 @@
+/** One-tool dispatch through the batch executor, for tests that drive a single call. */
+import type { Context } from '@deepseek-ai/cordis'
+import type { Agent } from '@deepseek-ai/dsh-agent'
+import type { ToolCallId } from '@deepseek-ai/dsh-llm'
+import type { ToolExecutionResult } from '@deepseek-ai/dsh-tools'
+
+/**
+ * Dispatch one standalone tool call and return that call's own settled result.
+ *
+ * The executor's batch API reports one result per model call; these tests drive a single call as the
+ * loop would, and read the result's content or failure directly.
+ * @param ctx - Context carrying the tool runtime.
+ * @param input - Call identity, name, raw arguments, owning Agent, and cancellation.
+ * @returns The call's settled execution result.
+ */
+export async function executeOneTool(
+  ctx: Context,
+  input: {
+    readonly signal: AbortSignal
+    readonly callId: ToolCallId
+    readonly name: string
+    readonly arguments: unknown
+    readonly agent: Agent
+  },
+): Promise<ToolExecutionResult> {
+  const batch = await ctx.tools.execute({
+    signal: input.signal,
+    calls: [{
+      type: 'tool-call',
+      id: input.callId,
+      name: input.name,
+      arguments: JSON.stringify(input.arguments ?? {}),
+    }],
+    agent: input.agent,
+  })
+  const result = batch.results[0]
+  if (result === undefined) throw new Error('the tool batch returned no result')
+  return result.result
+}
diff --git a/packages/experimental/liveshare/tests/tunnel-supervision-fake-worker.ts b/packages/experimental/liveshare/tests/tunnel-supervision-fake-worker.ts
new file mode 100644
index 0000000000..2b923287dd
--- /dev/null
+++ b/packages/experimental/liveshare/tests/tunnel-supervision-fake-worker.ts
@@ -0,0 +1,63 @@
+/** Controllable tunnel worker process for the supervisor unit bench. */
+
+import type { TunnelWorkerEvent } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { TunnelProcessCommand, TunnelWorkerInput } from '../src/host/tunnel-worker.ts'
+
+/** One worker the supervisor started, driven by the spec. */
+export class FakeTunnelWorker {
+  /** Every worker the supervisor constructed. */
+  static readonly instances: FakeTunnelWorker[] = []
+
+  /** Commands the supervisor sent. */
+  readonly sent: TunnelWorkerInput[] = []
+
+  /** Events the supervisor would receive from the process. */
+  listener: ((event: TunnelWorkerEvent) => void) | undefined
+
+  started = false
+  stopped = false
+
+  /**
+   * Record one construction.
+   * @param options Command the supervisor chose.
+   */
+  constructor(readonly options: { readonly command: TunnelProcessCommand }) {
+    FakeTunnelWorker.instances.push(this)
+  }
+
+  /**
+   * Subscribe the supervisor.
+   * @param listener Event sink.
+   * @returns Disposer.
+   */
+  onEvent(listener: (event: TunnelWorkerEvent) => void): () => void {
+    this.listener = listener
+    return () => { this.listener = undefined }
+  }
+
+  /** Mark the process started. */
+  start(): void {
+    this.started = true
+  }
+
+  /**
+   * Record one command.
+   * @param command Command to carry out.
+   */
+  send(command: TunnelWorkerInput): void {
+    this.sent.push(command)
+  }
+
+  /** Mark the process stopped. */
+  async stop(): Promise<void> {
+    this.stopped = true
+  }
+
+  /**
+   * Deliver one worker event.
+   * @param event Event the process reported.
+   */
+  emit(event: Record<string, unknown>): void {
+    this.listener?.(event as never)
+  }
+}
diff --git a/packages/experimental/liveshare/tests/tunnel-supervision-unit.spec.ts b/packages/experimental/liveshare/tests/tunnel-supervision-unit.spec.ts
new file mode 100644
index 0000000000..2fd13dc87a
--- /dev/null
+++ b/packages/experimental/liveshare/tests/tunnel-supervision-unit.spec.ts
@@ -0,0 +1,648 @@
+/** Tunnel supervision: worker commands, settlements, timers, credentials, and Relay probes. */
+
+import { mkdirSync, mkdtempSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { pathToFileURL } from 'node:url'
+import { Context } from '@deepseek-ai/cordis'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import type { TunnelShareSpec } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { ViewerAnswer } from '../src/viewer-channel.ts'
+import { createTunnelSupervision, gatewayWorkerCommand, refreshedShareTitle } from '../src/host/tunnel-supervision.ts'
+import { FakeTunnelWorker } from './tunnel-supervision-fake-worker.ts'
+
+vi.mock('../src/host/tunnel-worker.ts', async () => {
+  const { FakeTunnelWorker: Fake } = await import('./tunnel-supervision-fake-worker.ts')
+  return { TunnelWorker: Fake }
+})
+
+const RELAY = 'https://relay.example.test/liveshare'
+const temporaryRoots: string[] = []
+
+afterEach(() => {
+  for (const root of temporaryRoots.splice(0)) rmSync(root, { recursive: true, force: true })
+  vi.unstubAllGlobals()
+  vi.restoreAllMocks()
+})
+
+beforeEach(() => {
+  FakeTunnelWorker.instances.length = 0
+  vi.spyOn(console, 'warn').mockImplementation(() => {})
+  vi.spyOn(console, 'error').mockImplementation(() => {})
+})
+
+function share(overrides: Partial<Record<string, unknown>> = {}): Record<string, unknown> {
+  return {
+    shareId: 'share-1', sessionId: 'session-1', sessionTitle: 'Session', accessMode: 'open',
+    link: `${RELAY}/?shareId=share-1`, relay: RELAY, gatewayToken: 'gateway-token',
+    allowedSubjectIds: [], revision: 1, createdAt: '2026-01-01T00:00:00Z',
+    allowsFork: false, sessionMode: 'view', online: false, ...overrides,
+  }
+}
+
+interface HarnessOptions {
+  readonly shares?: readonly Record<string, unknown>[]
+  readonly pending?: Map<string, { relay: string; shareId: string; gatewayToken: string }>
+  readonly credential?: {
+    readonly relay: string
+    readonly credential: string
+    readonly expiresAt?: string
+    readonly displayName?: string
+    readonly subjectId?: string
+    readonly avatarUrl?: string
+  }
+  readonly ownerIdentity?: { providerId: string; tenantId: string; subjectId: string; displayName?: string }
+}
+
+function harness(options: HarnessOptions = {}) {
+  const root = mkdtempSync(join(tmpdir(), 'liveshare-supervision-'))
+  temporaryRoots.push(root)
+  const ownerShares = new Map<string, Record<string, unknown>>()
+  for (const entry of options.shares ?? []) ownerShares.set(String(entry.shareId), entry)
+  const pendingRemovals = options.pending ?? new Map()
+  const state = { disposed: false, credential: options.credential }
+  const viewerRead = {
+    answer: vi.fn(async (): Promise<ViewerAnswer> => ({ status: 200, body: { ok: true } })),
+    closeShare: vi.fn(),
+  }
+  const relay = {
+    applyRelayAccess: vi.fn(),
+    forgetRelayAccess: vi.fn(),
+    invalidateRelayAccess: vi.fn(),
+  }
+  const cancelShareTurn = vi.fn()
+  const reconcileSourceAccess = vi.fn()
+  const accessChanged = vi.fn()
+  const ctx = new Context()
+  const supervision = createTunnelSupervision({
+    ctx,
+    ownerShares,
+    pendingRemovals,
+    instanceId: 'instance-1',
+    allowedSubjectIds: ['deployment'],
+    ownerContext: { ownerProviderId: 'owner-p', ownerTenantId: 'owner-t' },
+    ownerIdentity: options.ownerIdentity,
+    relay,
+    viewerRead: () => viewerRead,
+    accessChanged,
+    cancelShareTurn,
+    cancelChildTurns: vi.fn(),
+    reconcileSourceAccess,
+    disposed: () => state.disposed,
+    ownerCredentialFile: join(root, 'owner-credential.json'),
+    storedCredential: () => state.credential,
+    setStoredCredential: (credential: typeof state.credential) => { state.credential = credential },
+    persistOwnerState: vi.fn(async () => {}),
+  } as never)
+  const worker = (): FakeTunnelWorker => {
+    const instance = FakeTunnelWorker.instances.at(-1)
+    if (instance === undefined) throw new Error('supervisor started no worker')
+    return instance
+  }
+  return {
+    supervision, ownerShares, pendingRemovals, state, viewerRead, relay, ctx, worker, root,
+    cancelShareTurn, reconcileSourceAccess, accessChanged,
+  }
+}
+
+function spec(overrides: Partial<TunnelShareSpec> = {}): TunnelShareSpec {
+  return {
+    shareId: 'share-1', sessionId: 'session-1', sessionTitle: 'Session', accessMode: 'open',
+    relay: RELAY, gatewayToken: 'gateway-token', ownerDisplayName: 'Owner', allowedSubjectIds: [],
+    ...overrides,
+  }
+}
+
+describe('worker command and registration helpers', () => {
+  it('builds source and built worker launch commands', () => {
+    const packageRoot = join(process.cwd(), 'packages/experimental/liveshare')
+    expect(gatewayWorkerCommand(pathToFileURL(join(packageRoot, 'src/host/share-host.ts')).href)).toMatchObject({
+      executable: process.execPath, args: ['--import', 'tsx/esm', expect.stringContaining(join('src', 'owner-gateway', 'cli.ts'))],
+    })
+    expect(gatewayWorkerCommand(pathToFileURL(join(packageRoot, 'lib/index.js')).href)).toMatchObject({
+      executable: process.execPath, args: [expect.stringContaining(join('lib', 'owner-gateway', 'cli.js'))],
+    })
+  })
+
+  it('reads a refreshed title only when the Session states a new one', () => {
+    expect(refreshedShareTitle('Old', 'New')).toBe('New')
+    expect(refreshedShareTitle('Same', 'Same')).toBeUndefined()
+    expect(refreshedShareTitle('Old', '')).toBeUndefined()
+    expect(refreshedShareTitle('Old', 42)).toBeUndefined()
+  })
+
+  it('starts the worker lazily, sends the command, and settles a registration', async () => {
+    const h = harness()
+    const settled = h.supervision.waitForShare('share-1', 1_000)
+    h.supervision.send({ type: 'add-share', share: spec() })
+    expect(FakeTunnelWorker.instances).toHaveLength(1)
+    expect(h.worker().started).toBe(true)
+    expect(h.worker().sent[0]).toMatchObject({ type: 'add-share' })
+    h.worker().emit({ type: 'share-connected', registrationToken: 'r', shareId: 'share-1' })
+    await expect(settled).resolves.toEqual({ ok: true })
+  })
+
+  it('reports a refused registration, an unexplained one, and a timeout', async () => {
+    vi.useFakeTimers()
+    try {
+      const h = harness()
+      h.supervision.send({ type: 'add-share', share: spec() })
+      const refused = h.supervision.waitForShare('share-1', 1_000)
+      h.worker().emit({ type: 'share-error', registrationToken: 'r', shareId: 'share-1', message: 'relay refused registration status=401' })
+      await expect(refused).resolves.toEqual({ ok: false, error: 'relay refused registration status=401' })
+
+      const unexplained = h.supervision.waitForShare('share-1', 1_000)
+      h.worker().emit({ type: 'share-error', registrationToken: 'r', shareId: 'share-1', message: '' })
+      await expect(unexplained).resolves.toEqual({ ok: false })
+
+      const timedOut = h.supervision.waitForShare('share-1', 1_000)
+      await vi.advanceTimersByTimeAsync(1_000)
+      await expect(timedOut).resolves.toEqual({ ok: false, error: 'gateway-timeout' })
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+
+  it('sends the relay access frames straight to the relay and aborts a cancelled request', async () => {
+    const h = harness()
+    h.supervision.send({ type: 'add-share', share: spec() })
+    h.worker().emit({
+      type: 'share-access-state', registrationToken: 'r', shareId: 'share-1', version: 1,
+      accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view',
+    })
+    expect(h.relay.applyRelayAccess).toHaveBeenCalledWith('share-1', expect.objectContaining({ version: 1 }))
+
+    h.worker().emit({
+      type: 'share-rpc-request', registrationToken: 'r', token: 't', id: 1, shareId: 'share-1',
+      body: { op: 'call', path: '/api/session/list', body: {} }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    h.worker().emit({ type: 'share-rpc-cancel', registrationToken: 'r', token: 't', id: 1, shareId: 'share-1' })
+    await Promise.resolve()
+    expect(h.worker().sent.some(command => command.type === 'share-rpc-response')).toBe(false)
+  })
+
+  it('drops a viewer answer that arrives after its request was cancelled', async () => {
+    const h = harness()
+    let rejectRead: ((error: unknown) => void) | undefined
+    h.viewerRead.answer.mockImplementationOnce(() => new Promise((_resolve, reject) => { rejectRead = reject }))
+    h.supervision.send({ type: 'add-share', share: spec() })
+    h.worker().emit({
+      type: 'share-rpc-request', registrationToken: 'r', token: 'cancelled', id: 8, shareId: 'share-1',
+      body: { op: 'call', path: '/api/session/list', body: {} }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    await Promise.resolve()
+    h.worker().emit({ type: 'share-rpc-cancel', registrationToken: 'r', token: 'cancelled', id: 8, shareId: 'share-1' })
+    rejectRead?.(new Error('late failure'))
+    await Promise.resolve()
+    expect(h.worker().sent.some(command => command.type === 'share-rpc-response')).toBe(false)
+  })
+
+  it('leaves a replacement request in place when an older answer settles', async () => {
+    const h = harness()
+    let resolveRead: ((answer: ViewerAnswer) => void) | undefined
+    h.viewerRead.answer.mockImplementationOnce(() => new Promise<ViewerAnswer>((resolve) => { resolveRead = resolve }))
+    h.supervision.send({ type: 'add-share', share: spec() })
+    h.worker().emit({
+      type: 'share-rpc-request', registrationToken: 'r', token: 'same', id: 1, shareId: 'share-1',
+      body: { op: 'call', path: '/api/session/list', body: {} }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    await Promise.resolve()
+    h.worker().emit({
+      type: 'share-rpc-request', registrationToken: 'r', token: 'same', id: 2, shareId: 'share-1',
+      body: { op: 'call', path: '/api/session/list', body: {} }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    resolveRead?.({ status: 200, body: { ok: true } })
+    await Promise.resolve()
+    // The older answer still reports its own id; the replacement's controller is left in place.
+    expect(h.worker().sent.some(command => command.type === 'share-rpc-response' && command.id === 1)).toBe(true)
+  })
+
+  it('answers an invalid viewer request and forwards a valid one', async () => {
+    const h = harness()
+    h.supervision.send({ type: 'add-share', share: spec() })
+    h.worker().emit({
+      type: 'share-rpc-request', registrationToken: 'r', token: 'bad', id: 2, shareId: 'share-1',
+      body: { op: 'nope' }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    expect(h.worker().sent.at(-1)).toMatchObject({ type: 'share-rpc-response', status: 400 })
+
+    h.worker().emit({
+      type: 'share-rpc-request', registrationToken: 'r', token: 'good', id: 3, shareId: 'share-1',
+      body: { op: 'call', path: '/api/session/list', body: {} }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    await vi.waitFor(() => { expect(h.worker().sent.at(-1)).toMatchObject({ type: 'share-rpc-response', status: 200 }) })
+  })
+
+  it('reports a viewer read failure and drops an answer after its request was cancelled', async () => {
+    const h = harness()
+    h.viewerRead.answer.mockRejectedValueOnce(new Error('boom'))
+    const plain = harness()
+    plain.viewerRead.answer.mockRejectedValueOnce('plain failure')
+    plain.supervision.send({ type: 'add-share', share: spec() })
+    plain.worker().emit({
+      type: 'share-rpc-request', registrationToken: 'r', token: 'p', id: 9, shareId: 'share-1',
+      body: { op: 'call', path: '/api/session/list', body: {} }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    await vi.waitFor(() => { expect(plain.worker().sent.at(-1)).toMatchObject({ status: 500 }) })
+    expect(console.error).toHaveBeenCalledWith(expect.stringContaining('plain failure'))
+    h.supervision.send({ type: 'add-share', share: spec() })
+    h.worker().emit({
+      type: 'share-rpc-request', registrationToken: 'r', token: 't', id: 4, shareId: 'share-1',
+      body: { op: 'call', path: '/api/session/list', body: {} }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    await vi.waitFor(() => {
+      expect(h.worker().sent.at(-1)).toMatchObject({ type: 'share-rpc-response', status: 500 })
+    })
+    expect(console.error).toHaveBeenCalledWith(expect.stringContaining('viewer read failed'))
+  })
+
+  it('marks a share online and flushes removals when the relay connects it', () => {
+    const pending = new Map([['old', { relay: RELAY, shareId: 'old', gatewayToken: 't' }]])
+    const h = harness({ shares: [share()], pending })
+    vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 200 })))
+    h.supervision.send({ type: 'add-share', share: spec() })
+    h.worker().emit({ type: 'share-connected', registrationToken: 'r', shareId: 'share-1' })
+    expect(h.relay.forgetRelayAccess).toHaveBeenCalledWith('share-1')
+    expect(h.ownerShares.get('share-1')?.online).toBe(true)
+  })
+
+  it('marks a closed share offline without a diagnosis', () => {
+    const h = harness({ shares: [share({ online: true })] })
+    h.supervision.send({ type: 'add-share', share: spec() })
+    h.worker().emit({ type: 'share-closed', registrationToken: 'r', shareId: 'share-1' })
+    expect(h.ownerShares.get('share-1')?.online).toBe(false)
+    expect(console.warn).not.toHaveBeenCalled()
+
+    // A share this host no longer holds is still fenced and reported.
+    h.worker().emit({ type: 'share-connected', registrationToken: 'r', shareId: 'absent' })
+    expect(h.relay.forgetRelayAccess).toHaveBeenCalledWith('absent')
+  })
+
+  it('marks a share offline and diagnoses a socket error', () => {
+    const h = harness({ shares: [share({ online: true })] })
+    h.supervision.send({ type: 'add-share', share: spec() })
+    h.worker().emit({ type: 'share-error', registrationToken: 'r', shareId: 'share-1', message: 'boom' })
+    expect(h.relay.invalidateRelayAccess).toHaveBeenCalledWith('share-1')
+    expect(h.ownerShares.get('share-1')?.online).toBe(false)
+    expect(console.warn).toHaveBeenCalledWith('[liveshare] share offline share=share-1 reason=boom')
+  })
+})
+
+describe('registration payloads', () => {
+  it('carries the owner identity row, credential, subjects, and expiry', () => {
+    const h = harness({
+      ownerIdentity: { providerId: 'p', tenantId: 't', subjectId: 'owner' },
+      credential: { relay: RELAY, credential: 'relay-token', displayName: 'Credential Owner' },
+    })
+    const payload = h.supervision.shareSpec(
+      { ...spec({ allowedSubjectIds: ['alice', 'deployment'], expiresAt: '2030-01-01T00:00:00Z' }) } as never,
+      h.state.credential,
+    )
+    expect(payload).toMatchObject({
+      shareId: 'share-1', ownerDisplayName: 'Credential Owner', ownerProviderId: 'owner-p', ownerTenantId: 'owner-t',
+      ownerInstanceId: 'instance-1', ownerCredential: 'relay-token', allowedSubjectIds: ['deployment', 'alice'],
+      expiresAt: '2030-01-01T00:00:00Z',
+    })
+  })
+
+  it('falls back to the credential name, the subject label, then the relay host', () => {
+    const named = harness({ credential: { relay: RELAY, credential: 'token', displayName: 'Credential Owner' } })
+    expect(named.supervision.shareSpec(spec() as never, named.state.credential)).toMatchObject({ ownerDisplayName: 'Credential Owner' })
+
+    const subject = harness({ credential: { relay: RELAY, credential: 'token', subjectId: 'ou_123' } })
+    const subjectSpec = subject.supervision.shareSpec(spec() as never, subject.state.credential)
+    expect(subjectSpec.ownerDisplayName).toBe('ou_123')
+
+    const host = harness({ ownerIdentity: { providerId: 'p', tenantId: 't', subjectId: 'owner' } })
+    expect(host.supervision.shareSpec(spec() as never, undefined)).toMatchObject({ ownerDisplayName: 'relay.example.test' })
+  })
+
+  it('re-registers only offline shares of the credential relay', () => {
+    const h = harness({
+      shares: [
+        share({ shareId: 'offline', online: false }),
+        share({ shareId: 'online', online: true }),
+        share({ shareId: 'other', relay: 'https://other.example.test/liveshare', online: false }),
+      ],
+    })
+    h.supervision.reregisterOfflineShares(RELAY, { relay: RELAY, credential: 'token' })
+    const adds = h.worker().sent.filter(command => command.type === 'add-share')
+    expect(adds).toHaveLength(1)
+    expect(adds[0]).toMatchObject({ share: { shareId: 'offline' } })
+  })
+
+  it('answers credential usability per normalized relay and claims only its own address', () => {
+    const h = harness({ credential: { relay: RELAY, credential: 'token', expiresAt: '2000-01-01T00:00:00Z' } })
+    expect(h.supervision.credentialForRelay(RELAY, h.state.credential)).toBeUndefined()
+    expect(h.supervision.credentialForRelay(RELAY, { relay: RELAY, credential: 'fresh', expiresAt: '2030-01-01T00:00:00Z' })).toBe('fresh')
+    expect(h.supervision.claimableCredentialForRelay(RELAY)).toBe('token')
+    expect(h.supervision.claimableCredentialForRelay('https://other.example.test/liveshare')).toBeUndefined()
+  })
+})
+
+describe('expiry timers and pending removals', () => {
+  it('cancels work when a share deadline passes and re-arms a far deadline', async () => {
+    vi.useFakeTimers()
+    try {
+      const h = harness({ shares: [share()] })
+      h.ownerShares.set('share-1', share({ expiresAt: '2030-01-01T00:00:00Z' }))
+      h.supervision.scheduleShareExpiry(h.ownerShares.get('share-1') as never)
+      await vi.advanceTimersByTimeAsync(Date.parse('2030-01-01T00:00:00Z') - Date.now() + 1)
+      // The deadline passed, so the turn and its streams end; the record stays for the refusal.
+      expect(h.cancelShareTurn).toHaveBeenCalledWith('share-1')
+      expect(h.viewerRead.closeShare).toHaveBeenCalledWith('share-1')
+      // A Session whose shares have all expired gets its own tools back.
+      expect(h.reconcileSourceAccess).toHaveBeenCalledWith('session-1')
+      expect(h.accessChanged).toHaveBeenCalled()
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+
+  it('stops a deadline whose share was removed before it fired', async () => {
+    vi.useFakeTimers()
+    try {
+      const h = harness()
+      const entry = share({ expiresAt: '2030-01-01T00:00:00Z' })
+      h.ownerShares.set('share-1', entry)
+      h.supervision.scheduleShareExpiry(entry as never)
+      h.ownerShares.delete('share-1')
+      await vi.advanceTimersByTimeAsync(Date.parse('2030-01-01T00:00:00Z') - Date.now() + 1)
+      expect(h.cancelShareTurn).toHaveBeenCalledWith('share-1')
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+
+  it('ignores a share without a deadline and clears one that is disarmed', () => {
+    vi.useFakeTimers()
+    try {
+      const h = harness()
+      h.supervision.scheduleShareExpiry(share() as never)
+      h.supervision.clearShareExpiry('absent')
+      h.supervision.scheduleShareExpiry(share({ expiresAt: 'not a date' }) as never)
+      const withDeadline = share({ expiresAt: '2030-01-01T00:00:00Z' })
+      h.ownerShares.set('share-1', withDeadline)
+      h.supervision.scheduleShareExpiry(withDeadline as never)
+      h.supervision.scheduleShareExpiry(withDeadline as never)
+      h.supervision.clearShareExpiry('share-1')
+      expect(h.ownerShares.size).toBe(1)
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+
+  it('deletes one relay row and reports each outcome', async () => {
+    const h = harness()
+    vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 200 })))
+    await expect(h.supervision.deleteRelayRow(RELAY, 'share-1', 'token')).resolves.toBe(true)
+    vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 404 })))
+    await expect(h.supervision.deleteRelayRow(RELAY, 'share-1', 'token')).resolves.toBe(true)
+    vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 500 })))
+    await expect(h.supervision.deleteRelayRow(RELAY, 'share-1', 'token')).resolves.toBe(false)
+    vi.stubGlobal('fetch', vi.fn(async () => { throw new Error('offline') }))
+    await expect(h.supervision.deleteRelayRow(RELAY, 'share-1', 'token')).resolves.toBe(false)
+  })
+
+  it('flushes owed rows, persists the deletion, and backs the retry off', async () => {
+    vi.useFakeTimers()
+    try {
+      const pending = new Map([['old', { relay: RELAY, shareId: 'old', gatewayToken: 't' }]])
+      const h = harness({ pending })
+      vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 200 })))
+      await h.supervision.flushPendingRemovals()
+      expect(pending.size).toBe(0)
+
+      // Nothing owed is a no-op.
+      await h.supervision.flushPendingRemovals()
+
+      pending.set('stuck', { relay: RELAY, shareId: 'stuck', gatewayToken: 't' })
+      vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 500 })))
+      await h.supervision.flushPendingRemovals()
+      expect(pending.size).toBe(1)
+      // A second arm replaces the pending timer, and its callback flushes again.
+      h.supervision.armPendingRemovalRetry()
+      h.supervision.armPendingRemovalRetry()
+      await vi.advanceTimersByTimeAsync(600_000)
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+
+  it('keeps a deletion whose persist failed and stops retrying after disposal', async () => {
+    vi.useFakeTimers()
+    try {
+      const pending = new Map([['old', { relay: RELAY, shareId: 'old', gatewayToken: 't' }]])
+      const h = harness({ pending })
+      vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 200 })))
+      await h.supervision.flushPendingRemovals()
+      h.state.disposed = true
+      h.supervision.armPendingRemovalRetry()
+      expect(pending.size).toBe(0)
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+
+  it('reconciles a renamed Session and re-registers its share', async () => {
+    const h = harness({ shares: [share()] })
+    const session = { id: 'session-1' }
+    h.ctx.provide('sessions', { get: (id: string) => id === 'session-1' ? session : undefined } as never)
+    h.ctx.provide('sessionTitle', { get: () => ({ title: 'Renamed' }) } as never)
+    h.supervision.send({ type: 'add-share', share: spec() })
+    await h.supervision.reconcileShareTitles()
+    expect(h.ownerShares.get('share-1')?.sessionTitle).toBe('Renamed')
+    expect(h.worker().sent.slice(-2).map(command => command.type)).toEqual(['remove-share', 'add-share'])
+  })
+
+  it('keeps a recorded title without the optional services or a listed Session', async () => {
+    const missingServices = harness({ shares: [share()] })
+    await expect(missingServices.supervision.reconcileShareTitles()).resolves.toBeUndefined()
+    expect(missingServices.ownerShares.get('share-1')?.sessionTitle).toBe('Session')
+
+    const missingSession = harness({ shares: [share()] })
+    missingSession.ctx.provide('sessions', { get: () => undefined } as never)
+    missingSession.ctx.provide('sessionTitle', { get: () => ({ title: 'Renamed' }) } as never)
+    await missingSession.supervision.reconcileShareTitles()
+    expect(missingSession.ownerShares.get('share-1')?.sessionTitle).toBe('Session')
+  })
+
+  it('re-registers a share whose Session reports a new title and skips one that reports none', async () => {
+    const unchanged = harness({ shares: [share()] })
+    unchanged.ctx.provide('sessions', { get: () => ({ id: 'session-1' }) } as never)
+    unchanged.ctx.provide('sessionTitle', { get: () => undefined } as never)
+    await unchanged.supervision.reconcileShareTitles()
+    expect(unchanged.ownerShares.get('share-1')?.sessionTitle).toBe('Session')
+
+    const h = harness({ shares: [share()] })
+    h.ctx.provide('sessions', { get: () => ({ id: 'session-1' }) } as never)
+    h.ctx.provide('sessionTitle', { get: () => ({ title: 'Renamed' }) } as never)
+    await h.supervision.reconcileShareTitles()
+    expect(h.ownerShares.get('share-1')?.sessionTitle).toBe('Renamed')
+  })
+})
+
+describe('relay probes and claims', () => {
+  it('records credential support and adopts a reported horizon', async () => {
+    const h = harness({ credential: { relay: RELAY, credential: 'token' } })
+    vi.stubGlobal('fetch', vi.fn(async () => Response.json({ supported: true, ownerCredentialExpiresAt: '2030-03-17T17:46:40.000Z' })))
+    await h.supervision.probeRelayCredentialSupport(RELAY)
+    expect(h.supervision.factsFor(RELAY).supportsCredentials).toBe(true)
+    expect(h.state.credential?.expiresAt).toBe('2030-03-17T17:46:40.000Z')
+  })
+
+  it('keeps the stored horizon when the answer states none or the same one, and survives an unwritable file', async () => {
+    const h = harness({ credential: { relay: RELAY, credential: 'token', expiresAt: '2030-01-01T00:00:00.000Z' } })
+    vi.stubGlobal('fetch', vi.fn(async () => Response.json({ supported: true })))
+    await h.supervision.probeRelayCredentialSupport(RELAY)
+    expect(h.state.credential?.expiresAt).toBe('2030-01-01T00:00:00.000Z')
+
+    vi.stubGlobal('fetch', vi.fn(async () => Response.json({ supported: true, ownerCredentialExpiresAt: '2030-01-01T00:00:00.000Z' })))
+    await h.supervision.probeRelayCredentialSupport(RELAY)
+    expect(h.state.credential?.expiresAt).toBe('2030-01-01T00:00:00.000Z')
+
+    rmSync(join(h.root, 'owner-credential.json'), { force: true })
+    mkdirSync(join(h.root, 'owner-credential.json'))
+    vi.stubGlobal('fetch', vi.fn(async () => Response.json({ supported: true, ownerCredentialExpiresAt: '2031-01-01T00:00:00Z' })))
+    await h.supervision.probeRelayCredentialSupport(RELAY)
+    expect(h.state.credential?.expiresAt).toBe('2030-01-01T00:00:00.000Z')
+  })
+
+  it('records an unsupported relay and leaves a failed probe unknown', async () => {
+    const h = harness()
+    vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 500 })))
+    await h.supervision.probeRelayCredentialSupport(RELAY)
+    expect(h.supervision.factsFor(RELAY).supportsCredentials).toBe(false)
+    vi.stubGlobal('fetch', vi.fn(async () => { throw new Error('offline') }))
+    await h.supervision.probeRelayCredentialSupport(RELAY)
+    expect(h.supervision.factsFor(RELAY).supportsCredentials).toBe(false)
+  })
+
+  it('stops a probe when the host is disposed while the fetch is in flight', async () => {
+    const h = harness()
+    vi.stubGlobal('fetch', vi.fn(async () => {
+      h.state.disposed = true
+      return Response.json({ supported: true })
+    }))
+    await h.supervision.probeRelayCredentialSupport(RELAY)
+    expect(h.supervision.factsFor(RELAY).supportsCredentials).toBeUndefined()
+  })
+
+  it('claims only shares of the named relay and reports claimed and skipped', async () => {
+    const h = harness({
+      shares: [
+        share({ shareId: 'a' }), share({ shareId: 'b' }), share({ shareId: 'c', relay: 'https://other.example.test/liveshare' }),
+      ],
+    })
+    vi.stubGlobal('fetch', vi.fn(async (input: string | URL | Request) => {
+      const url = input instanceof Request ? input.url : String(input)
+      if (url.includes('shareId=a')) return Response.json({ claimed: true })
+      if (url.includes('shareId=b')) return Response.json({ claimed: false })
+      return new Response('', { status: 500 })
+    }))
+    await expect(h.supervision.claimOwnedShares(RELAY, 'token')).resolves.toEqual({ claimed: 1, skipped: 1 })
+    await expect(h.supervision.claimOwnedShares(RELAY, undefined)).resolves.toEqual({ claimed: 0, skipped: 0 })
+
+    // A host disposed while the first claim ran stops before the next share.
+    vi.stubGlobal('fetch', vi.fn(async () => {
+      h.state.disposed = true
+      return Response.json({ claimed: true })
+    }))
+    await expect(h.supervision.claimOwnedShares(RELAY, 'token')).resolves.toEqual({ claimed: 1, skipped: 0 })
+  })
+
+  it('reports identity state, bound fields, renewal, and claim outcomes', () => {
+    const h = harness({ credential: { relay: RELAY, credential: 'token', displayName: 'Owner', expiresAt: '2030-01-01T00:00:00Z' } })
+    h.supervision.factsFor(RELAY).supportsCredentials = false
+    expect(h.supervision.ownerIdentityStatus(RELAY, {}, h.state.credential)).toMatchObject({ state: 'relay-unsupported' })
+    h.supervision.factsFor(RELAY).supportsCredentials = true
+    expect(h.supervision.ownerIdentityStatus(RELAY, { renewed: true, claim: { claimed: 1, skipped: 0 } }, h.state.credential))
+      .toMatchObject({ state: 'verified', relay: RELAY, displayName: 'Owner', renewed: true, claim: { claimed: 1, skipped: 0 } })
+  })
+
+  it('checks relay connectivity and describes a transport failure', async () => {
+    vi.useFakeTimers()
+    const slow = harness()
+    vi.stubGlobal('fetch', vi.fn((_input: unknown, init?: RequestInit) => new Promise((_resolve, reject) => {
+      init?.signal?.addEventListener('abort', () => { reject(new Error('timeout')) })
+    })))
+    const slowProbe = slow.supervision.probeRelayConnectivity(RELAY)
+    await vi.advanceTimersByTimeAsync(5_000)
+    const slowAnswer = await slowProbe
+    expect(slowAnswer).toMatchObject({ ok: false, httpReachable: false })
+    expect(String((slowAnswer as { readonly error?: unknown }).error)).toContain('timeout')
+    vi.useRealTimers()
+    const h = harness()
+    vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 401 })))
+    await expect(h.supervision.probeRelayConnectivity(RELAY)).resolves.toEqual({ ok: true, httpReachable: true, blocking: false })
+
+    vi.stubGlobal('fetch', vi.fn(async () => { throw new Error('offline', { cause: Object.assign(new Error('dns'), { code: 'ENOTFOUND' }) }) }))
+    await expect(h.supervision.probeRelayConnectivity(RELAY)).resolves.toEqual({
+      ok: false, httpReachable: false, blocking: true, error: `${RELAY}: ENOTFOUND: dns`,
+    })
+    vi.stubGlobal('fetch', vi.fn(async () => { throw 'plain failure' }))
+    await expect(h.supervision.probeRelayConnectivity(RELAY)).resolves.toMatchObject({ error: `${RELAY}: plain failure` })
+    vi.stubGlobal('fetch', vi.fn(async () => { throw new Error('no cause') }))
+    await expect(h.supervision.probeRelayConnectivity(RELAY)).resolves.toMatchObject({ error: `${RELAY}: no cause` })
+  })
+
+  it('reports a publish probe success, a transient failure, and each refusal status', async () => {
+    const h = harness()
+    vi.stubGlobal('fetch', vi.fn(async () => new Response('', { status: 200 })))
+    // The probe settles through the worker; deliver the connected event after the add reaches it.
+    const pending = h.supervision.probeRelayPublish(RELAY, spec())
+    await vi.waitFor(() => { expect(h.worker().sent.length).toBeGreaterThan(0) })
+    const add = h.worker().sent.at(-1) as { share: { shareId: string } }
+    h.worker().emit({ type: 'share-connected', registrationToken: 'r', shareId: add.share.shareId })
+    await expect(pending).resolves.toEqual({ ok: true, blocking: false })
+
+    const transient = h.supervision.probeRelayPublish(RELAY, spec())
+    await vi.waitFor(() => { expect(h.worker().sent.at(-1)?.type).toBe('add-share') })
+    const failing = h.worker().sent.at(-1) as { share: { shareId: string } }
+    h.worker().emit({ type: 'share-error', registrationToken: 'r', shareId: failing.share.shareId, message: 'network down' })
+    await expect(transient).resolves.toEqual({ ok: false, blocking: false, error: `${RELAY}: network down` })
+
+    const unexplained = h.supervision.probeRelayPublish(RELAY, spec())
+    await vi.waitFor(() => { expect(h.worker().sent.at(-1)?.type).toBe('add-share') })
+    const silent = h.worker().sent.at(-1) as { share: { shareId: string } }
+    h.worker().emit({ type: 'share-error', registrationToken: 'r', shareId: silent.share.shareId, message: '' })
+    await expect(unexplained).resolves.toEqual({ ok: false, blocking: false })
+
+    for (const [status, text] of [[401, 'did not accept'], [410, 'refused this registration']] as const) {
+      const refused = h.supervision.probeRelayPublish(RELAY, spec())
+      await vi.waitFor(() => { expect(h.worker().sent.at(-1)?.type).toBe('add-share') })
+      const entry = h.worker().sent.at(-1) as { share: { shareId: string } }
+      h.worker().emit({
+        type: 'share-error', registrationToken: 'r', shareId: entry.share.shareId,
+        message: `relay refused registration status=${String(status)}`,
+      })
+      const refusedAnswer = await refused
+      expect(refusedAnswer).toMatchObject({ ok: false, blocking: true })
+      expect(String((refusedAnswer as { readonly error?: unknown }).error)).toContain(text)
+    }
+  })
+
+  it('disposes a supervisor with no armed timers', async () => {
+    const h = harness()
+    const closeViewer = vi.fn()
+    await h.supervision.dispose(closeViewer)
+    expect(closeViewer).toHaveBeenCalled()
+  })
+
+  it('disposes requests, timers, and the worker', async () => {
+    vi.useFakeTimers()
+    try {
+      const h = harness({ pending: new Map([['old', { relay: RELAY, shareId: 'old', gatewayToken: 't' }]]) })
+      h.supervision.send({ type: 'add-share', share: spec() })
+      const pendingShare = h.supervision.waitForShare('share-1', 10_000)
+      h.ownerShares.set('share-1', share({ expiresAt: '2030-01-01T00:00:00Z' }))
+      h.supervision.scheduleShareExpiry(h.ownerShares.get('share-1') as never)
+      h.supervision.armPendingRemovalRetry()
+      await h.supervision.dispose(() => {})
+      await expect(pendingShare).resolves.toEqual({ ok: false, error: 'host disposed' })
+      expect(h.worker().stopped).toBe(true)
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/tunnel-worker-fake-child.ts b/packages/experimental/liveshare/tests/tunnel-worker-fake-child.ts
new file mode 100644
index 0000000000..05d32db69d
--- /dev/null
+++ b/packages/experimental/liveshare/tests/tunnel-worker-fake-child.ts
@@ -0,0 +1,57 @@
+/** One controllable child process standing in for the tunnel worker. */
+
+import { EventEmitter } from 'node:events'
+import { PassThrough } from 'node:stream'
+
+/** The child surface the supervisor reads and drives. */
+export class FakeTunnelChild extends EventEmitter {
+  /** Every child the supervisor spawned, in order. */
+  static readonly spawned: FakeTunnelChild[] = []
+
+  readonly stdout = new PassThrough()
+  readonly stderr = new PassThrough()
+  readonly sent: unknown[] = []
+  readonly kills: string[] = []
+  connected = true
+  exitCode: number | null = null
+  signalCode: NodeJS.Signals | null = null
+  readonly pid = 4242
+
+  /**
+   * Record one spawn.
+   * @param executable Node executable the supervisor chose.
+   * @param args argv handed to the worker.
+   */
+  constructor(readonly executable: string, readonly args: readonly string[]) {
+    super()
+    FakeTunnelChild.spawned.push(this)
+  }
+
+  /**
+   * Record one IPC command.
+   * @param message Command the supervisor sent.
+   * @returns Whether the other side accepted it.
+   */
+  send(message: unknown): boolean {
+    this.sent.push(message)
+    return true
+  }
+
+  /**
+   * Record one signal.
+   * @param signal Signal the supervisor sent.
+   */
+  kill(signal: string): boolean {
+    this.kills.push(signal)
+    return true
+  }
+
+  /**
+   * Report a successful exit.
+   * @param code Exit code.
+   */
+  exit(code = 0): void {
+    this.exitCode = code
+    this.emit('exit', code, null)
+  }
+}
diff --git a/packages/experimental/liveshare/tests/tunnel-worker-gateway-refusal.spec.ts b/packages/experimental/liveshare/tests/tunnel-worker-gateway-refusal.spec.ts
new file mode 100644
index 0000000000..4e09530522
--- /dev/null
+++ b/packages/experimental/liveshare/tests/tunnel-worker-gateway-refusal.spec.ts
@@ -0,0 +1,157 @@
+/**
+ * What one gateway worker does when the Relay answers its handshake instead of upgrading it.
+ *
+ * Each case runs a real Relay stand-in and a real worker process over IPC, so the assertions are
+ * about the events the owner host receives and the handshakes the Relay actually saw.
+ */
+
+import { randomUUID } from 'node:crypto'
+import { spawn, type ChildProcess } from 'node:child_process'
+import { createServer, type Server } from 'node:http'
+import { fileURLToPath } from 'node:url'
+import { describe, expect, it } from 'vitest'
+import {
+  parseTunnelWorkerEvent,
+  type TunnelShareSpec,
+  type TunnelRegistrationToken,
+  type TunnelWorkerCommand,
+  type TunnelWorkerEvent,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { relayRefusal, relayRefusalStatus } from '../src/owner-gateway/relay-refusal.ts'
+
+const workerEntry = fileURLToPath(new URL('../src/owner-gateway/cli.ts', import.meta.url))
+
+interface RelayStandIn {
+  readonly url: string
+  /** Handshakes the Relay answered. */
+  readonly attempts: () => number
+  readonly close: () => Promise<void>
+}
+
+/** One Relay that answers every gateway handshake with the same HTTP status. */
+async function relayAnswering(status: number): Promise<RelayStandIn> {
+  let attempts = 0
+  const server: Server = createServer((_request, response) => {
+    attempts += 1
+    response.writeHead(status)
+    response.end('answered')
+  })
+  await new Promise<void>((resolve) => { server.listen(0, '127.0.0.1', resolve) })
+  const address = server.address()
+  if (address === null || typeof address === 'string') throw new Error('Relay stand-in has no port')
+  return {
+    url: `http://127.0.0.1:${String(address.port)}`,
+    attempts: () => attempts,
+    close: () => new Promise<void>((resolve) => { server.close(() => { resolve() }) }),
+  }
+}
+
+interface GatewayProcess {
+  readonly events: TunnelWorkerEvent[]
+  readonly send: (command: TunnelWorkerCommand) => void
+  readonly stop: () => Promise<void>
+}
+
+/** Start one gateway worker the way the owner host starts it: a child process with an IPC channel. */
+function startGateway(): GatewayProcess {
+  const child: ChildProcess = spawn(process.execPath, ['--import', 'tsx/esm', workerEntry], {
+    stdio: ['ignore', 'pipe', 'pipe', 'ipc'],
+  })
+  child.stdout?.resume()
+  child.stderr?.resume()
+  const events: TunnelWorkerEvent[] = []
+  child.on('message', (value) => {
+    const event = parseTunnelWorkerEvent(value)
+    if (event !== undefined) events.push(event)
+  })
+  return {
+    events,
+    send: (command) => { child.send(command) },
+    stop: async () => {
+      if (child.exitCode !== null || child.signalCode !== null) return
+      const closed = new Promise<void>((resolve) => { child.once('exit', () => { resolve() }) })
+      child.kill('SIGTERM')
+      await closed
+    },
+  }
+}
+
+function shareSpec(relay: string): TunnelShareSpec {
+  return {
+    shareId: 'share-1',
+    sessionId: 'session-1',
+    sessionTitle: 'session-1',
+    accessMode: 'open',
+    relay,
+    gatewayToken: 'gateway-token',
+    ownerDisplayName: 'owner',
+    allowedSubjectIds: [],
+  }
+}
+
+function failureMessages(worker: GatewayProcess): string[] {
+  return worker.events.filter(event => event.type === 'share-error')
+    .map(event => (event.type === 'share-error' ? event.message : ''))
+}
+
+describe('Relay handshake refusals', () => {
+  it('treats only a decision about the registration as final', () => {
+    expect(relayRefusal(401)).toBe('relay refused registration status=401')
+    expect(relayRefusal(403)).toBe('relay refused registration status=403')
+    expect(relayRefusal(410)).toBe('relay refused registration status=410')
+    expect(relayRefusal(426)).toBe('relay refused registration status=426')
+    // A Relay that is down, rate limiting, or reached over a broken socket is worth another attempt.
+    expect(relayRefusal(500)).toBeUndefined()
+    expect(relayRefusal(429)).toBeUndefined()
+    expect(relayRefusal(undefined)).toBeUndefined()
+  })
+
+  it('reads back the refusing status only from the message this build composes', () => {
+    expect(relayRefusalStatus('relay refused registration status=401')).toBe(401)
+    expect(relayRefusalStatus('relay refused registration status=410')).toBe(410)
+    // A failure the gateway reported any other way keeps the ordinary reconnect schedule.
+    expect(relayRefusalStatus('tunnel worker exited code=1 signal=null')).toBeUndefined()
+    expect(relayRefusalStatus('relay answered registration status=200')).toBeUndefined()
+    // The message carries a status, but not one this build treats as final.
+    expect(relayRefusalStatus('relay refused registration status=500')).toBeUndefined()
+  })
+
+  it.each([403, 426])('stops registering a share refused with %s and keeps the status', async (status) => {
+    const relay = await relayAnswering(status)
+    const worker = startGateway()
+    try {
+      await expect.poll(() => worker.events.some(event => event.type === 'ready'), { timeout: 20_000 })
+        .toBe(true)
+      worker.send({ type: 'add-share', registrationToken: randomUUID() as TunnelRegistrationToken, share: shareSpec(relay.url) })
+
+      await expect.poll(() => failureMessages(worker)).toContain(`relay refused registration status=${String(status)}`)
+      // A refused registration is not retried: the same token reaches the same answer.
+      await new Promise((resolve) => { setTimeout(resolve, 1_200) })
+      expect(relay.attempts()).toBe(1)
+
+      // Registering the share again asks the Relay once more, which is how an owner republish recovers.
+      worker.send({ type: 'add-share', registrationToken: randomUUID() as TunnelRegistrationToken, share: shareSpec(relay.url) })
+      await expect.poll(() => relay.attempts()).toBe(2)
+    } finally {
+      await worker.stop()
+      await relay.close()
+    }
+  })
+
+  it('keeps retrying a Relay that failed without deciding', async () => {
+    const relay = await relayAnswering(500)
+    const worker = startGateway()
+    try {
+      await expect.poll(() => worker.events.some(event => event.type === 'ready'), { timeout: 20_000 })
+        .toBe(true)
+      worker.send({ type: 'add-share', registrationToken: randomUUID() as TunnelRegistrationToken, share: shareSpec(relay.url) })
+
+      await expect.poll(() => failureMessages(worker)).toContain('relay answered registration status=500')
+      // The status stays diagnosable and the socket comes back on the reconnect schedule.
+      await expect.poll(() => relay.attempts(), { timeout: 10_000 }).toBeGreaterThanOrEqual(2)
+    } finally {
+      await worker.stop()
+      await relay.close()
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/tunnel-worker-restart.spec.ts b/packages/experimental/liveshare/tests/tunnel-worker-restart.spec.ts
new file mode 100644
index 0000000000..6bf7164aa8
--- /dev/null
+++ b/packages/experimental/liveshare/tests/tunnel-worker-restart.spec.ts
@@ -0,0 +1,364 @@
+/**
+ * A crashed tunnel worker is replaced, and the shares the owner still holds are registered again.
+ *
+ * Every case runs a real child process over IPC: the fixture records each registration it receives
+ * and exits on a chosen trigger, so the assertions are about what the replacement process was
+ * actually handed rather than about the supervisor's internal state.
+ */
+
+import { ChildProcess } from 'node:child_process'
+import { existsSync, mkdtempSync, readFileSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished } from 'vitest'
+import type { ShareAccessStateFrame, TunnelShareSpec, TunnelWorkerEvent } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { TunnelWorker } from '../src/host/tunnel-worker.ts'
+import {
+  INITIAL_RETRY_BACKOFF,
+  RETRY_BACKOFF_MAX_MS,
+  retryBackoffNext,
+  retryBackoffSettled,
+} from '../src/owner-gateway/retry-backoff.ts'
+
+interface RecordedRegistration {
+  readonly shareId: string
+  readonly registrationToken: string
+  readonly at: number
+}
+
+/** Trigger one worker generation exits on, so a test chooses when the process crashes. */
+type ExitTrigger = 'first-registration' | 'remove-share'
+
+function workerScript(recordPath: string, exitOn: ExitTrigger): string {
+  const exit = exitOn === 'remove-share'
+    ? 'if (command.type === "remove-share") setTimeout(() => process.exit(9), 10)'
+    : 'if (registered === 1) setTimeout(() => process.exit(7), 20)'
+  return `
+    const { appendFileSync } = require('node:fs')
+    const record = ${JSON.stringify(recordPath)}
+    let registered = 0
+    process.send({ type: 'ready' })
+    process.on('message', (command) => {
+      if (command.type === 'shutdown') process.exit(0)
+      if (command.type === 'add-share') {
+        registered += 1
+        appendFileSync(record, JSON.stringify({ shareId: command.share.shareId, registrationToken: command.registrationToken, at: Date.now() }) + '\\n')
+        process.send({ type: 'share-connected', registrationToken: command.registrationToken, shareId: command.share.shareId })
+      }
+      ${exit}
+    })
+  `
+}
+
+function recordPath(): string {
+  const root = mkdtempSync(join(tmpdir(), 'liveshare-worker-restart-'))
+  onTestFinished(() => { rmSync(root, { recursive: true, force: true }) })
+  return join(root, 'registrations.ndjson')
+}
+
+function registrations(path: string): RecordedRegistration[] {
+  if (!existsSync(path)) return []
+  return readFileSync(path, 'utf8').split('\n').filter(line => line !== '')
+    .map(line => JSON.parse(line) as RecordedRegistration)
+}
+
+function shareSpec(shareId: string): TunnelShareSpec {
+  return {
+    shareId,
+    sessionId: 'session-1',
+    sessionTitle: 'session-1',
+    accessMode: 'open',
+    relay: 'http://relay.invalid',
+    gatewayToken: 'gateway-token',
+    ownerDisplayName: 'owner',
+    allowedSubjectIds: [],
+  }
+}
+
+describe('Liveshare tunnel worker restart', () => {
+  it('registers the owner shares again after the worker exits', async () => {
+    const record = recordPath()
+    const worker = new TunnelWorker({
+      command: { executable: process.execPath, args: ['-e', workerScript(record, 'first-registration')] },
+    })
+    const events: string[] = []
+    const failures: string[] = []
+    worker.onEvent((event) => {
+      if (event.type === 'share-connected') events.push(`connected:${event.shareId}`)
+      if (event.type === 'share-error') {
+        events.push(`offline:${event.shareId}`)
+        failures.push(event.message)
+      }
+    })
+    worker.start()
+    worker.send({ type: 'add-share', share: shareSpec('share-1') })
+
+    try {
+      // The exit marks the share offline; the replacement process then registers it again.
+      await expect.poll(() => events).toContain('offline:share-1')
+      await expect.poll(() => events.filter(event => event === 'connected:share-1')).toHaveLength(2)
+
+      const registered = registrations(record).filter(entry => entry.shareId === 'share-1')
+      // One registration per generation: the replay is the owner's set, not an extra copy of it.
+      expect(registered).toHaveLength(2)
+      expect(registered[1]!.registrationToken).toBe(registered[0]!.registrationToken)
+      expect(registered[0]!.registrationToken).toMatch(/^[0-9a-f-]{36}$/)
+      // The replacement waits for the restart delay instead of retrying immediately.
+      expect(registered[1]!.at - registered[0]!.at).toBeGreaterThanOrEqual(400)
+      expect(failures[0]).toContain('code=7')
+    } finally {
+      await worker.stop()
+    }
+  })
+
+  it('hands the replacement only the shares the owner still holds', async () => {
+    const record = recordPath()
+    const worker = new TunnelWorker({
+      command: { executable: process.execPath, args: ['-e', workerScript(record, 'remove-share')] },
+    })
+    worker.start()
+    worker.send({ type: 'add-share', share: shareSpec('share-1') })
+    worker.send({ type: 'add-share', share: shareSpec('share-2') })
+
+    try {
+      await expect.poll(() => registrations(record).map(entry => entry.shareId))
+        .toEqual(['share-1', 'share-2'])
+      // Dropping one share is the crash trigger: the worker exits while the owner still holds
+      // share-1, so only share-1 belongs to the process that replaces it.
+      worker.send({ type: 'remove-share', shareId: 'share-2' })
+      await expect.poll(() => registrations(record).map(entry => entry.shareId))
+        .toEqual(['share-1', 'share-2', 'share-1'])
+    } finally {
+      await worker.stop()
+    }
+  })
+
+  it('leaves the worker stopped when the owner stops it during a restart', async () => {
+    const record = recordPath()
+    const worker = new TunnelWorker({
+      command: { executable: process.execPath, args: ['-e', workerScript(record, 'first-registration')] },
+    })
+    worker.start()
+    worker.send({ type: 'add-share', share: shareSpec('share-1') })
+
+    try {
+      await expect.poll(() => registrations(record)).toHaveLength(1)
+      await worker.stop()
+      await new Promise((resolve) => { setTimeout(resolve, 700) })
+      // A pending restart that outlived stop() would resurrect the process the owner just ended.
+      expect(registrations(record)).toHaveLength(1)
+    } finally {
+      await worker.stop()
+    }
+  })
+})
+
+describe('Committed access-state restart intent', () => {
+  const snapshot: ShareAccessStateFrame = {
+    type: 'share-access-state', version: 3, accessMode: 'selected',
+    allowedSubjectIds: ['remaining-viewer'], sessionMode: 'view',
+  }
+
+  function snapshotWorker(record: string): TunnelWorker {
+    const script = `
+      const { appendFileSync, existsSync } = require('node:fs')
+      const record = ${JSON.stringify(record)}
+      const firstGeneration = !existsSync(record)
+      const registered = new Map()
+      process.send({ type: 'ready' })
+      process.on('message', command => {
+        if (command.type === 'shutdown') process.exit(0)
+        if (command.type === 'remove-share') {
+          if (command.shareId === 'crash-marker') process.exit(7)
+          else process.send({ ...${JSON.stringify(snapshot)}, registrationToken: registered.get(command.shareId)?.registrationToken, shareId: command.shareId,
+            version: 99, sessionMode: 'write', allowedSubjectIds: ['obsolete-viewer'] })
+        }
+        if (command.type !== 'add-share') return
+        registered.set(command.share.shareId, command)
+        appendFileSync(record, JSON.stringify({ ...command.share, registrationToken: command.registrationToken }) + '\\n')
+        process.send({ type: 'share-connected', registrationToken: command.registrationToken, shareId: command.share.shareId })
+        if (firstGeneration && command.share.sessionMode === 'write') {
+          process.send({ ...${JSON.stringify(snapshot)}, registrationToken: command.registrationToken, shareId: command.share.shareId })
+          process.send({ ...${JSON.stringify(snapshot)}, registrationToken: command.registrationToken, shareId: command.share.shareId,
+            version: 2, sessionMode: 'write', allowedSubjectIds: ['obsolete-viewer'] })
+          process.send({ ...${JSON.stringify(snapshot)}, registrationToken: command.registrationToken, shareId: command.share.shareId,
+            sessionMode: 'write', allowedSubjectIds: ['obsolete-viewer'] })
+        }
+        process.send({ type: 'share-rpc-request', registrationToken: command.registrationToken, shareId: command.share.shareId,
+          token: 'registration-' + Date.now(), id: 1, body: { recorded: true },
+          actor: { providerId: 'mock', tenantId: 'tenant', subjectId: 'barrier' } })
+      })
+    `
+    const worker = new TunnelWorker({ command: { executable: process.execPath, args: ['-e', script] } })
+    onTestFinished(() => worker.stop())
+    return worker
+  }
+
+  function recordedSpecs(record: string): Array<TunnelShareSpec & { registrationToken: string }> {
+    if (!existsSync(record)) return []
+    return readFileSync(record, 'utf8').split('\n').filter(Boolean)
+      .map(line => JSON.parse(line) as TunnelShareSpec & { registrationToken: string })
+  }
+
+  it('replays accepted view mode and ACL after a write registration crashes', async () => {
+    const record = recordPath()
+    const worker = snapshotWorker(record)
+    const events: TunnelWorkerEvent[] = []
+    worker.onEvent((event) => { events.push(event) })
+    worker.send({ type: 'add-share', share: {
+      ...shareSpec('share'), sessionMode: 'write', allowsFork: true,
+      allowedSubjectIds: ['obsolete-viewer'], expiresAt: '2030-01-01T00:00:00Z',
+    } })
+    await expect.poll(() => events.filter(event => event.type === 'share-rpc-request')).toHaveLength(1)
+    const originalProcess: unknown = Object.getOwnPropertyDescriptor(worker, 'child')?.value
+    if (!(originalProcess instanceof ChildProcess)) throw new Error('Supervisor did not retain its child process')
+    expect(events.filter(event => event.type === 'share-access-state')).toEqual([{
+      ...snapshot, registrationToken: recordedSpecs(record)[0]!.registrationToken, shareId: 'share',
+    }])
+    worker.send({ type: 'remove-share', shareId: 'crash-marker' })
+    await expect.poll(() => recordedSpecs(record), { timeout: 10_000 }).toHaveLength(2)
+    await expect.poll(() => events.filter(event => event.type === 'share-rpc-request')).toHaveLength(2)
+    const settled = events.length
+    const registrationToken = recordedSpecs(record)[0]!.registrationToken
+    // Re-deliver old IPC callbacks with the preserved registration UUID after replacement activation.
+    originalProcess.emit('message', { type: 'ready' })
+    originalProcess.emit('message', { type: 'share-connected', registrationToken, shareId: 'share' })
+    originalProcess.emit('message', { ...snapshot, registrationToken, shareId: 'share', version: 100, sessionMode: 'write' })
+    originalProcess.emit('message', { type: 'share-error', registrationToken, shareId: 'share', message: 'old-process' })
+    originalProcess.emit('message', { type: 'share-closed', registrationToken, shareId: 'share' })
+    originalProcess.emit('message', { type: 'share-rpc-request', registrationToken, token: 'old-process', shareId: 'share', id: 1,
+      body: {}, actor: { providerId: 'mock', tenantId: 'tenant', subjectId: 'alice' } })
+    expect(events).toHaveLength(settled)
+    expect(recordedSpecs(record)[1]).toEqual({
+      ...shareSpec('share'), registrationToken: recordedSpecs(record)[0]!.registrationToken, accessMode: 'selected', sessionMode: 'view', allowsFork: false,
+      allowedSubjectIds: ['remaining-viewer'],
+    })
+    await worker.stop()
+  })
+
+  it('keeps explicit remove/add intent ahead of queued prior-registration snapshots', async () => {
+    const record = recordPath()
+    const worker = snapshotWorker(record)
+    const events: TunnelWorkerEvent[] = []
+    worker.onEvent((event) => { events.push(event) })
+    worker.send({ type: 'add-share', share: { ...shareSpec('share'), sessionMode: 'write', allowsFork: true } })
+    await expect.poll(() => events.filter(event => event.type === 'share-rpc-request')).toHaveLength(1)
+    const explicit: TunnelShareSpec = {
+      ...shareSpec('share'), sessionMode: 'view', allowsFork: true, allowedSubjectIds: ['owner-choice'],
+    }
+    worker.send({ type: 'remove-share', shareId: 'share' })
+    worker.send({ type: 'add-share', share: explicit })
+    await expect.poll(() => events.filter(event => event.type === 'share-rpc-request')).toHaveLength(2)
+    expect(events.filter(event => event.type === 'share-access-state')).toEqual([{
+      ...snapshot, registrationToken: recordedSpecs(record)[0]!.registrationToken, shareId: 'share',
+    }])
+    worker.send({ type: 'remove-share', shareId: 'crash-marker' })
+    await expect.poll(() => recordedSpecs(record), { timeout: 10_000 }).toHaveLength(3)
+    const initialToken = recordedSpecs(record)[0]!.registrationToken
+    const explicitToken = recordedSpecs(record)[1]!.registrationToken
+    expect(explicitToken).not.toBe(initialToken)
+    expect(recordedSpecs(record).slice(1)).toEqual([
+      { ...explicit, registrationToken: explicitToken }, { ...explicit, registrationToken: explicitToken },
+    ])
+    await worker.stop()
+  })
+
+  it('ignores removed registration lifecycle, authority and request events after a same-process add', async () => {
+    const record = recordPath()
+    const script = `
+      const { appendFileSync } = require('node:fs')
+      const record = ${JSON.stringify(record)}
+      let previous
+      let current
+      process.send({ type: 'ready' })
+      const identity = command => ({ shareId: command.share.shareId, registrationToken: command.registrationToken })
+      const state = command => ({ type: 'share-access-state', ...identity(command), version: 100,
+        accessMode: 'selected', sessionMode: 'write', allowedSubjectIds: ['obsolete-viewer'] })
+      const request = (command, token) => ({ type: 'share-rpc-request', ...identity(command), token, id: 1,
+        body: { marker: token }, actor: { providerId: 'mock', tenantId: 'tenant', subjectId: 'barrier' } })
+      process.on('message', command => {
+        if (command.type === 'shutdown') process.exit(0)
+        if (command.type === 'remove-share' && command.shareId === 'crash-marker') process.exit(7)
+        if (command.type === 'add-share') {
+          appendFileSync(record, JSON.stringify({ ...command.share, registrationToken: command.registrationToken }) + '\\n')
+          current = command
+          if (!previous) {
+            previous = command
+            process.send({ type: 'share-connected', ...identity(current) })
+            process.send(request(current, 'initial-barrier'))
+          } else {
+            process.send({ type: 'share-connected', ...identity(previous) })
+            process.send(state(previous))
+            process.send(request(previous, 'stale-request'))
+            process.send({ type: 'share-error', ...identity(previous), message: 'obsolete-error' })
+            process.send({ type: 'share-closed', ...identity(previous) })
+            process.send(request(current, 'current-barrier'))
+          }
+        }
+        if (command.type === 'share-rpc-response' && command.token === 'current-barrier') {
+          process.send({ type: 'share-connected', ...identity(current) })
+          process.send({ ...state(current), version: 1, sessionMode: 'view', allowedSubjectIds: ['remaining-viewer'] })
+          process.send(state(previous))
+          process.send({ type: 'share-error', ...identity(previous), message: 'obsolete-error' })
+          process.send({ type: 'share-closed', ...identity(previous) })
+          process.send(request(current, 'post-state-barrier'))
+          process.send({ type: 'share-rpc-cancel', ...identity(previous), token: 'post-state-barrier', id: 1 })
+          process.send(request(current, 'cancel-barrier'))
+        }
+      })
+    `
+    const worker = new TunnelWorker({ command: { executable: process.execPath, args: ['-e', script] } })
+    onTestFinished(() => worker.stop())
+    const events: TunnelWorkerEvent[] = []
+    worker.onEvent((event) => { events.push(event) })
+    const requests = () => events.filter((event): event is Extract<TunnelWorkerEvent, { type: 'share-rpc-request' }> =>
+      event.type === 'share-rpc-request')
+    worker.send({ type: 'add-share', share: { ...shareSpec('share'), sessionMode: 'write' } })
+    await expect.poll(() => requests().length).toBe(1)
+    worker.send({ type: 'remove-share', shareId: 'share' })
+    worker.send({ type: 'add-share', share: { ...shareSpec('share'), sessionMode: 'view' } })
+    await expect.poll(() => requests().some(event => event.token === 'current-barrier')).toBe(true)
+    expect(requests().map(event => event.token)).toEqual(['initial-barrier', 'current-barrier'])
+    expect(events.filter(event => event.type === 'share-connected')).toHaveLength(1)
+    expect(events.filter(event => event.type === 'share-access-state' || event.type === 'share-error'
+      || event.type === 'share-closed')).toEqual([])
+    const current = requests().find(event => event.token === 'current-barrier')!
+    expect(current.registrationToken).not.toBe(requests()[0]!.registrationToken)
+    worker.send({ type: 'share-rpc-response', token: current.token, shareId: current.shareId, id: current.id, status: 200 })
+    await expect.poll(() => requests().some(event => event.token === 'cancel-barrier')).toBe(true)
+    expect(events.filter(event => event.type === 'share-connected')).toHaveLength(2)
+    expect(events.filter(event => event.type === 'share-access-state')).toEqual([{
+      type: 'share-access-state', registrationToken: current.registrationToken, shareId: 'share', version: 1,
+      accessMode: 'selected', sessionMode: 'view', allowedSubjectIds: ['remaining-viewer'],
+    }])
+    expect(events.filter(event => event.type === 'share-error' || event.type === 'share-closed')).toEqual([])
+    expect(events.some(event => event.type === 'share-rpc-cancel' && event.token === 'post-state-barrier')).toBe(false)
+    worker.send({ type: 'remove-share', shareId: 'crash-marker' })
+    await expect.poll(() => recordedSpecs(record), { timeout: 10_000 }).toHaveLength(3)
+    expect(recordedSpecs(record)[2]).toEqual({
+      ...shareSpec('share'), registrationToken: current.registrationToken, accessMode: 'selected',
+      sessionMode: 'view', allowsFork: false, allowedSubjectIds: ['remaining-viewer'],
+    })
+    await worker.stop()
+  })
+
+})
+
+describe('Liveshare reconnect schedule', () => {
+  it('doubles the delay up to a ceiling', () => {
+    const delays: number[] = []
+    let state = INITIAL_RETRY_BACKOFF
+    for (let attempt = 0; attempt < 6; attempt += 1) {
+      delays.push(state.delayMs)
+      state = retryBackoffNext(state)
+    }
+    expect(delays).toEqual([500, 1_000, 2_000, 4_000, 8_000, RETRY_BACKOFF_MAX_MS])
+    expect(state).toEqual({ delayMs: RETRY_BACKOFF_MAX_MS, attempt: 6 })
+  })
+
+  it('starts the delays over once a connection has proven stable', () => {
+    const grown = retryBackoffNext(retryBackoffNext(INITIAL_RETRY_BACKOFF))
+    expect(grown.delayMs).toBe(2_000)
+    expect(retryBackoffSettled()).toEqual(INITIAL_RETRY_BACKOFF)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/tunnel-worker-supervisor.spec.ts b/packages/experimental/liveshare/tests/tunnel-worker-supervisor.spec.ts
new file mode 100644
index 0000000000..757dbbb1f8
--- /dev/null
+++ b/packages/experimental/liveshare/tests/tunnel-worker-supervisor.spec.ts
@@ -0,0 +1,466 @@
+/** Tunnel worker process supervision: spawn, IPC correlation, restart, and stop. */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { randomUUID } from 'node:crypto'
+import type {
+  TunnelRegistrationToken,
+  TunnelRequestToken,
+  TunnelShareSpec,
+  TunnelWorkerEvent,
+} from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { TunnelWorker } from '../src/host/tunnel-worker.ts'
+import { FakeTunnelChild } from './tunnel-worker-fake-child.ts'
+
+vi.mock('node:child_process', async () => {
+  const { FakeTunnelChild: Fake } = await import('./tunnel-worker-fake-child.ts')
+  return {
+    spawn: (executable: string, args: readonly string[]) => new Fake(executable, args),
+  }
+})
+
+const share = (shareId = 'share-1'): TunnelShareSpec => ({
+  shareId, sessionId: `session-${shareId}`, sessionTitle: shareId, accessMode: 'open',
+  relay: 'http://relay.invalid', gatewayToken: 'gateway-token', ownerDisplayName: 'Owner',
+  allowedSubjectIds: [],
+})
+
+const token = (): TunnelRequestToken => randomUUID() as TunnelRequestToken
+
+interface Harness {
+  readonly worker: TunnelWorker
+  readonly events: TunnelWorkerEvent[]
+  add(shareId?: string): FakeTunnelChild
+  child(): FakeTunnelChild
+  registration(child: FakeTunnelChild, shareId?: string): TunnelRegistrationToken
+  connect(child: FakeTunnelChild, shareId?: string): void
+}
+
+const workers: TunnelWorker[] = []
+const ownedChildren = new Map<TunnelWorker, FakeTunnelChild[]>()
+
+function harness(): Harness {
+  const worker = new TunnelWorker({ command: { executable: process.execPath, args: ['-e', ''] } })
+  workers.push(worker)
+  const events: TunnelWorkerEvent[] = []
+  worker.onEvent((event) => { events.push(event) })
+  const child = (): FakeTunnelChild => {
+    const spawned = FakeTunnelChild.spawned.at(-1)
+    if (spawned === undefined) throw new Error('worker spawned no child')
+    return spawned
+  }
+  const add = (shareId = 'share-1'): FakeTunnelChild => {
+    worker.send({ type: 'add-share', share: share(shareId) })
+    const spawned = child()
+    spawned.emit('spawn')
+    const owned = ownedChildren.get(worker) ?? []
+    owned.push(spawned)
+    ownedChildren.set(worker, owned)
+    return spawned
+  }
+  const registration = (target: FakeTunnelChild, shareId = 'share-1'): TunnelRegistrationToken => {
+    const command = target.sent.find(value => (value as { type?: string }).type === 'add-share'
+      && (value as { share?: { shareId?: string } }).share?.shareId === shareId)
+    if (command === undefined) throw new Error(`child holds no add-share for ${shareId}`)
+    return (command as { registrationToken: TunnelRegistrationToken }).registrationToken
+  }
+  const connect = (target: FakeTunnelChild, shareId = 'share-1'): void => {
+    target.emit('message', { type: 'ready' })
+    target.emit('message', { type: 'share-connected', registrationToken: registration(target, shareId), shareId })
+  }
+  return { worker, events, add, child, registration, connect }
+}
+
+beforeEach(() => {
+  FakeTunnelChild.spawned.length = 0
+  vi.spyOn(console, 'warn').mockImplementation(() => {})
+})
+
+afterEach(async () => {
+  for (const child of FakeTunnelChild.spawned) {
+    if (child.exitCode === null) child.exit(0)
+  }
+  for (const worker of workers.splice(0).reverse()) {
+    await worker.stop()
+    ownedChildren.delete(worker)
+  }
+  vi.useRealTimers()
+  vi.restoreAllMocks()
+  FakeTunnelChild.spawned.length = 0
+})
+
+describe('tunnel worker lifecycle', () => {
+  it('starts lazily, replays queued commands on ready, and stops listening when unsubscribed', () => {
+    const h = harness()
+    const listener = vi.fn()
+    const dispose = h.worker.onEvent(listener)
+    const child = h.add()
+    expect(FakeTunnelChild.spawned).toHaveLength(1)
+    expect(child.sent).toEqual([])
+
+    child.emit('message', { type: 'ready' })
+    const add = child.sent[0] as { type: string; registrationToken: TunnelRegistrationToken }
+    expect(add.type).toBe('add-share')
+    expect(add.registrationToken).toMatch(/^[0-9a-f-]{36}$/u)
+    // Already running: a second add does not spawn another process.
+    h.worker.send({ type: 'add-share', share: share('share-2') })
+    expect(FakeTunnelChild.spawned).toHaveLength(1)
+
+    dispose()
+    listener.mockClear()
+    child.emit('message', { type: 'share-connected', registrationToken: h.registration(child), shareId: 'share-1' })
+    expect(listener).not.toHaveBeenCalled()
+  })
+
+  it('ignores events from a replaced process and reports an unreadable worker event', () => {
+    vi.useFakeTimers()
+    const h = harness()
+    const first = h.add()
+    h.connect(first)
+    first.emit('message', { type: 'not-a-worker-event' })
+    expect(console.warn).toHaveBeenCalledWith('[liveshare] host dropped one worker event type=not-a-worker-event')
+    first.emit('message', 'text')
+    expect(console.warn).toHaveBeenCalledWith('[liveshare] host dropped one worker event type=unnamed')
+
+    first.exit(1)
+    expect(h.events.filter(event => event.type === 'share-error')).toHaveLength(1)
+    vi.advanceTimersByTime(500)
+    const second = h.child()
+    expect(second).not.toBe(first)
+    h.events.length = 0
+    first.emit('message', { type: 'ready' })
+    first.exit(0)
+    expect(h.events).toEqual([])
+  })
+
+  it('ignores worker events whose registration this host no longer holds', () => {
+    const h = harness()
+    const child = h.add()
+    child.emit('message', { type: 'ready' })
+    const h2 = harness()
+    const other = h2.add('share-2')
+    other.emit('message', { type: 'ready' })
+    child.emit('message', { type: 'share-connected', registrationToken: h2.registration(other, 'share-2'), shareId: 'share-1' })
+    expect(h.events.filter(event => event.type === 'share-connected')).toEqual([])
+  })
+
+  it('applies the newest committed access state to the registration a restart replays', () => {
+    vi.useFakeTimers()
+    const h = harness()
+    const child = h.add()
+    child.emit('message', { type: 'ready' })
+    const registration = h.registration(child)
+    // Before the share is connected the state is not applied.
+    child.emit('message', {
+      type: 'share-access-state', registrationToken: registration, shareId: 'share-1', version: 1,
+      accessMode: 'selected', allowedSubjectIds: ['alice'], sessionMode: 'view', allowsFork: true,
+      expiresAt: '2030-01-01T00:00:00Z',
+    })
+    expect(h.events.filter(event => event.type === 'share-access-state')).toEqual([])
+
+    h.connect(child)
+    child.emit('message', {
+      type: 'share-access-state', registrationToken: registration, shareId: 'share-1', version: 2,
+      accessMode: 'selected', allowedSubjectIds: ['alice'], sessionMode: 'write', allowsFork: true,
+      expiresAt: '2030-01-01T00:00:00Z',
+    })
+    child.emit('message', {
+      type: 'share-access-state', registrationToken: registration, shareId: 'share-1', version: 2,
+      accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view',
+    })
+    expect(h.events.filter(event => event.type === 'share-access-state')).toHaveLength(1)
+
+    child.exit(1)
+    vi.advanceTimersByTime(500)
+    const replacement = h.child()
+    replacement.emit('message', { type: 'ready' })
+    const replayed = replacement.sent.find(value => (value as { type?: string }).type === 'add-share') as {
+      share: TunnelShareSpec
+    }
+    expect(replayed.share).toMatchObject({ accessMode: 'selected', sessionMode: 'write', allowsFork: true })
+    expect(replayed.share.expiresAt).toBe('2030-01-01T00:00:00Z')
+
+    child.emit('message', {
+      type: 'share-access-state', registrationToken: registration, shareId: 'share-1', version: 3,
+      accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view',
+    })
+    expect(h.events.filter(event => event.type === 'share-access-state')).toHaveLength(1)
+  })
+
+  it('correlates one request answer with its token, share, id, and registration', () => {
+    const h = harness()
+    const child = h.add()
+    h.connect(child)
+    const registration = h.registration(child)
+    const requestToken = token()
+    child.emit('message', {
+      type: 'share-rpc-request', registrationToken: registration, token: requestToken, id: 4,
+      shareId: 'share-1', body: { op: 'read' }, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    const before = child.sent.length
+    h.worker.send({ type: 'share-rpc-response', token: requestToken, id: 5, shareId: 'share-1', status: 200 })
+    h.worker.send({ type: 'share-rpc-response', token: requestToken, id: 4, shareId: 'other', status: 200 })
+    h.worker.send({ type: 'share-rpc-response', token: token(), id: 4, shareId: 'share-1', status: 200 })
+    expect(child.sent).toHaveLength(before)
+
+    child.connected = false
+    h.worker.send({ type: 'share-rpc-response', token: requestToken, id: 4, shareId: 'share-1', status: 200 })
+    expect(child.sent).toHaveLength(before)
+
+    // The answer was consumed: once the socket reconnects the same token is no longer live.
+    child.connected = true
+    h.worker.send({ type: 'share-rpc-response', token: requestToken, id: 4, shareId: 'share-1', status: 200 })
+    expect(child.sent).toHaveLength(before)
+  })
+
+  it('keeps a request until its matching cancel arrives', () => {
+    const h = harness()
+    const child = h.add()
+    h.connect(child)
+    const registration = h.registration(child)
+    const requestToken = token()
+    child.emit('message', {
+      type: 'share-rpc-request', registrationToken: registration, token: requestToken, id: 7,
+      shareId: 'share-1', body: {}, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    child.emit('message', { type: 'share-rpc-cancel', registrationToken: registration, token: token(), id: 7, shareId: 'share-1' })
+    child.emit('message', { type: 'share-rpc-cancel', registrationToken: registration, token: requestToken, id: 8, shareId: 'share-1' })
+    child.emit('message', { type: 'share-rpc-cancel', registrationToken: registration, token: requestToken, id: 7, shareId: 'other' })
+    const before = child.sent.length
+    h.worker.send({ type: 'share-rpc-response', token: requestToken, id: 7, shareId: 'share-1', status: 200 })
+    expect(child.sent).toHaveLength(before + 1)
+
+    child.emit('message', { type: 'share-rpc-request', registrationToken: registration, token: token(), id: 9,
+      shareId: 'share-1', body: {}, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' } })
+    h.worker.send({ type: 'remove-share', shareId: 'share-1' })
+    expect(h.events.filter(event => event.type === 'share-rpc-cancel').length).toBeGreaterThan(0)
+  })
+
+  it('drops a request on its matching cancel', () => {
+    const h = harness()
+    const child = h.add()
+    h.connect(child)
+    const registration = h.registration(child)
+    const requestToken = token()
+    child.emit('message', {
+      type: 'share-rpc-request', registrationToken: registration, token: requestToken, id: 11,
+      shareId: 'share-1', body: {}, actor: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    })
+    child.emit('message', { type: 'share-rpc-cancel', registrationToken: registration, token: requestToken, id: 11, shareId: 'share-1' })
+    const before = child.sent.length
+    h.worker.send({ type: 'share-rpc-response', token: requestToken, id: 11, shareId: 'share-1', status: 200 })
+    expect(child.sent).toHaveLength(before)
+  })
+
+  it('tracks socket loss without forgetting the owner registration', () => {
+    const h = harness()
+    const child = h.add()
+    h.connect(child)
+    const registration = h.registration(child)
+    child.emit('message', { type: 'share-closed', registrationToken: registration, shareId: 'share-1' })
+    expect(h.events.at(-1)).toEqual({ type: 'share-closed', registrationToken: registration, shareId: 'share-1' })
+    child.emit('message', { type: 'share-error', registrationToken: registration, shareId: 'share-1', message: 'boom' })
+    expect(h.events.at(-1)).toMatchObject({ type: 'share-error', message: 'boom' })
+  })
+
+  it('queues commands until a process is ready and drops them when the process is gone', () => {
+    const h = harness()
+    const child = h.add()
+    child.emit('message', { type: 'ready' })
+    h.worker.send({ type: 'remove-share', shareId: 'share-1' })
+    expect((child.sent.at(-1) as { type: string }).type).toBe('remove-share')
+
+    const queued = harness()
+    const pending = queued.add('queued')
+    // No ready event yet: the command is held, then flushed when ready arrives.
+    queued.worker.send({ type: 'remove-share', shareId: 'queued' })
+    expect(pending.sent.some(value => (value as { type?: string }).type === 'remove-share')).toBe(false)
+    pending.emit('message', { type: 'ready' })
+    expect(pending.sent.some(value => (value as { type?: string }).type === 'remove-share')).toBe(true)
+  })
+})
+
+describe('tunnel worker transport and staleness', () => {
+  it('forwards only non-empty transport settings to the worker', () => {
+    for (const name of ['NODE_EXTRA_CA_CERTS', 'SSL_CERT_FILE', 'SSL_CERT_DIR', 'HTTP_PROXY',
+      'HTTPS_PROXY', 'NO_PROXY', 'http_proxy', 'https_proxy', 'no_proxy']) vi.stubEnv(name, undefined)
+    vi.stubEnv('NODE_OPTIONS', '--no-warnings')
+    vi.stubEnv('NO_PROXY', '')
+    const h = harness()
+    h.add()
+    expect(FakeTunnelChild.spawned).toHaveLength(1)
+    vi.unstubAllEnvs()
+  })
+
+  it('ignores late spawn and error reports from a replaced process', () => {
+    const h = harness()
+    const first = h.add()
+    first.emit('spawn')
+    first.exit(0)
+    h.events.length = 0
+    first.emit('spawn')
+    first.emit('error', new Error('late failure'))
+    expect(h.events.filter(event => event.type === 'share-error')).toHaveLength(0)
+  })
+
+  it('reports a child failure as a share error and leaves the process stopped', () => {
+    const h = harness()
+    const child = h.add()
+    h.connect(child)
+    child.emit('error', new Error('ipc broken'))
+    expect(h.events.at(-1)).toMatchObject({ type: 'share-error', message: 'ipc broken' })
+  })
+
+  it('ignores worker traffic once stop began', async () => {
+    const h = harness()
+    const child = h.add()
+    h.connect(child)
+    const stopped = h.worker.stop()
+    child.emit('message', { type: 'ready' })
+    child.exit(0)
+    await stopped
+    expect(h.events.filter(event => event.type === 'share-connected')).toHaveLength(1)
+  })
+
+  it('applies a newer committed state that states no expiry', () => {
+    const h = harness()
+    const child = h.add()
+    child.emit('message', { type: 'ready' })
+    h.connect(child)
+    child.emit('message', {
+      type: 'share-access-state', registrationToken: h.registration(child), shareId: 'share-1', version: 4,
+      accessMode: 'open', allowedSubjectIds: [], sessionMode: 'view',
+    })
+    expect(h.events.filter(event => event.type === 'share-access-state')).toHaveLength(1)
+  })
+})
+
+describe('tunnel worker restart', () => {
+  it('restarts with backoff, replays current registrations, and drops superseded queued adds', () => {
+    vi.useFakeTimers()
+    const h = harness()
+    const first = h.add('a')
+    h.connect(first, 'a')
+    first.exit(1)
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('restarting tunnel worker delayMs=500 attempt=1 shares=1'))
+
+    // While the restart is pending a new add is queued; the replay replaces it with the current intent.
+    h.worker.send({ type: 'add-share', share: share('b') })
+    expect(FakeTunnelChild.spawned).toHaveLength(1)
+    vi.advanceTimersByTime(500)
+    const second = h.child()
+    second.emit('message', { type: 'ready' })
+    const adds = second.sent.filter(value => (value as { type?: string }).type === 'add-share') as Array<{ share: TunnelShareSpec }>
+    expect(adds.map(value => value.share.shareId).sort()).toEqual(['a', 'b'])
+  })
+
+  it('clears a pending replacement when start is called directly', () => {
+    vi.useFakeTimers()
+    const h = harness()
+    const first = h.add()
+    h.connect(first)
+    first.exit(1)
+    h.worker.start()
+    const second = h.child()
+    expect(second).not.toBe(first)
+    vi.advanceTimersByTime(5_000)
+    expect(FakeTunnelChild.spawned).toHaveLength(2)
+  })
+
+  it('replays past a queued command that is not a registration', () => {
+    vi.useFakeTimers()
+    const h = harness()
+    const first = h.add()
+    h.connect(first)
+    first.exit(1)
+    h.worker.send({ type: 'remove-share', shareId: 'gone' })
+    vi.advanceTimersByTime(500)
+    const second = h.child()
+    second.emit('message', { type: 'ready' })
+    expect(second.sent.some(value => (value as { type?: string }).type === 'remove-share')).toBe(true)
+    expect(second.sent.some(value => (value as { type?: string }).type === 'add-share')).toBe(true)
+  })
+
+  it('holds queued commands when ready arrives without a connected channel', () => {
+    const h = harness()
+    const child = h.add()
+    child.connected = false
+    child.emit('message', { type: 'ready' })
+    expect(child.sent).toEqual([])
+  })
+
+  it('starts the delay schedule over after a process stayed up long enough', () => {
+    vi.useFakeTimers()
+    const h = harness()
+    const first = h.add()
+    h.connect(first)
+    vi.advanceTimersByTime(30_000)
+    first.exit(1)
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('delayMs=500 attempt=1'))
+    first.exit(0)
+    vi.advanceTimersByTime(500)
+    const second = h.child()
+    second.emit('message', { type: 'ready' })
+    second.emit('message', { type: 'share-connected', registrationToken: h.registration(second), shareId: 'share-1' })
+    second.exit(1)
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('delayMs=1000 attempt=2'))
+  })
+
+  it('stays down when it carries no share and cancels a pending restart on stop', async () => {
+    vi.useFakeTimers()
+    const h = harness()
+    const child = h.add()
+    h.connect(child)
+    h.worker.send({ type: 'remove-share', shareId: 'share-1' })
+    child.exit(1)
+    expect(FakeTunnelChild.spawned).toHaveLength(1)
+    vi.advanceTimersByTime(5_000)
+    expect(FakeTunnelChild.spawned).toHaveLength(1)
+
+    h.worker.send({ type: 'add-share', share: share() })
+    const next = h.child()
+    h.connect(next)
+    next.exit(1)
+    const stopped = h.worker.stop()
+    await vi.advanceTimersByTimeAsync(5_000)
+    await stopped
+    expect(FakeTunnelChild.spawned).toHaveLength(2)
+  })
+})
+
+describe('tunnel worker stop', () => {
+  it('stops a process that never started and ignores commands afterwards', async () => {
+    const worker = new TunnelWorker({ command: { executable: process.execPath, args: [] } })
+    workers.push(worker)
+    await worker.stop()
+    worker.start()
+    worker.send({ type: 'remove-share', shareId: 'share-1' })
+    expect(FakeTunnelChild.spawned).toEqual([])
+  })
+
+  it('waits for the worker to exit and kills it only when it hangs', async () => {
+    vi.useFakeTimers()
+    const h = harness()
+    const child = h.add()
+    h.connect(child)
+    const stopped = h.worker.stop()
+    expect((child.sent.at(-1) as { type: string }).type).toBe('shutdown')
+    await vi.advanceTimersByTimeAsync(1_000)
+    expect(child.kills).toEqual(['SIGTERM'])
+    await vi.advanceTimersByTimeAsync(1_000)
+    expect(child.kills).toEqual(['SIGTERM', 'SIGKILL'])
+    child.exit(0)
+    await stopped
+    expect(console.warn).toHaveBeenCalledTimes(0)
+  })
+
+  it('does not send shutdown down a disconnected channel', async () => {
+    const h = harness()
+    const child = h.add()
+    child.connected = false
+    const before = child.sent.length
+    const stopped = h.worker.stop()
+    child.exit(0)
+    await stopped
+    expect(child.sent.slice(before).some(value => (value as { type?: string }).type === 'shutdown')).toBe(false)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/tunnel-worker.spec.ts b/packages/experimental/liveshare/tests/tunnel-worker.spec.ts
new file mode 100644
index 0000000000..572e2431fb
--- /dev/null
+++ b/packages/experimental/liveshare/tests/tunnel-worker.spec.ts
@@ -0,0 +1,182 @@
+import { mkdtempSync, readFileSync, realpathSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it, onTestFinished, vi } from 'vitest'
+import type { TunnelShareSpec, TunnelWorkerEvent } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { TunnelWorker } from '../src/host/tunnel-worker.ts'
+
+const share: TunnelShareSpec = { shareId: 'share', sessionId: 'session', sessionTitle: 'session',
+  accessMode: 'open', relay: 'http://relay.invalid', gatewayToken: 'token', ownerDisplayName: 'owner', allowedSubjectIds: [] }
+
+afterEach(() => {
+  vi.unstubAllEnvs()
+})
+
+describe('Liveshare tunnel worker transport environment', () => {
+  it('spawns the worker with the transport settings the Host itself resolves and trusts', async () => {
+    // The worker is a separate process: a Relay the Host reaches through a private CA or an explicit
+    // proxy is only reachable to the worker when these settings travel with it.
+    vi.stubEnv('NODE_EXTRA_CA_CERTS', '/etc/liveshare/relay-ca.pem')
+    vi.stubEnv('SSL_CERT_FILE', '/etc/liveshare/tls-ca.pem')
+    vi.stubEnv('HTTPS_PROXY', 'http://proxy.example.test:3128')
+    vi.stubEnv('NO_PROXY', 'relay.internal.example.test')
+    vi.stubEnv('HTTP_PROXY', '')
+    const root = realpathSync(mkdtempSync(join(tmpdir(), 'liveshare-worker-env-')))
+    const envFile = join(root, 'env.json')
+    onTestFinished(() => { rmSync(root, { recursive: true, force: true }) })
+    const script = `
+      const { writeFileSync } = require('node:fs')
+      writeFileSync(process.argv[1], JSON.stringify({
+        extraCaCerts: process.env.NODE_EXTRA_CA_CERTS,
+        sslCertFile: process.env.SSL_CERT_FILE,
+        httpsProxy: process.env.HTTPS_PROXY,
+        noProxy: process.env.NO_PROXY,
+        emptyProxy: process.env.HTTP_PROXY,
+        mode: process.env.LIVESHARE_TUNNEL_MODE,
+        ipc: typeof process.send,
+      }))
+      process.send({ type: 'ready' })
+      setInterval(() => {}, 1_000)
+    `
+    const worker = new TunnelWorker({ command: { executable: process.execPath, args: ['-e', script, envFile] } })
+    onTestFinished(() => worker.stop())
+    worker.onEvent(() => {})
+    worker.send({ type: 'add-share', share })
+    try {
+      await expect.poll(() => {
+        try {
+          return readFileSync(envFile, 'utf8') !== ''
+        } catch {
+          return false
+        }
+      }, { timeout: 10_000 }).toBe(true)
+      expect(JSON.parse(readFileSync(envFile, 'utf8'))).toEqual({
+        extraCaCerts: '/etc/liveshare/relay-ca.pem',
+        sslCertFile: '/etc/liveshare/tls-ca.pem',
+        httpsProxy: 'http://proxy.example.test:3128',
+        noProxy: 'relay.internal.example.test',
+        mode: 'gateway',
+        ipc: 'function',
+      })
+      // An empty variable is not forwarded as an empty value: the worker keeps its own default rather
+      // than reading a blank proxy as configured.
+      expect(JSON.parse(readFileSync(envFile, 'utf8'))).not.toHaveProperty('emptyProxy')
+    } finally {
+      await worker.stop()
+    }
+  })
+})
+
+describe('Liveshare tunnel worker lifecycle', () => {
+  it('cancels Host requests before reporting worker exit and drops late responses', async () => {
+    const events: TunnelWorkerEvent[] = []
+    const script = `
+      process.send({ type: 'ready' })
+      process.on('message', command => {
+        if (command.type === 'add-share') {
+          process.send({ type: 'share-rpc-request', registrationToken: command.registrationToken, token: 'exited-request', shareId: 'share', id: 1,
+            body: { op: 'read' }, actor: { providerId: 'mock', tenantId: 'tenant', subjectId: 'alice' } })
+        } else process.exit(7)
+      })
+    `
+    const worker = new TunnelWorker({ command: { executable: process.execPath, args: ['-e', script] } })
+    onTestFinished(() => worker.stop())
+    worker.onEvent((event) => { events.push(event) })
+    worker.send({ type: 'add-share', share })
+    try {
+      await expect.poll(() => events.some(event => event.type === 'share-rpc-request')).toBe(true)
+      const request = events.find(event => event.type === 'share-rpc-request')
+      if (request?.type !== 'share-rpc-request') throw new Error('Request missing')
+      worker.send({ type: 'remove-share', shareId: 'crash-marker' })
+      await expect.poll(() => events.some(event => event.type === 'share-rpc-cancel')).toBe(true)
+      expect(events.find(event => event.type === 'share-rpc-cancel')).toEqual({
+        type: 'share-rpc-cancel', registrationToken: request.registrationToken, token: request.token, id: request.id, shareId: request.shareId,
+      })
+      await expect.poll(() => events.some(event => event.type === 'share-error')).toBe(true)
+      expect(events.findIndex(event => event.type === 'share-rpc-cancel'))
+        .toBeLessThan(events.findIndex(event => event.type === 'share-error'))
+      worker.send({ type: 'share-rpc-response', token: request.token, shareId: request.shareId, id: request.id, status: 200 })
+      await worker.stop()
+      expect(events.filter(event => event.type === 'ready')).toHaveLength(1)
+    } finally {
+      await worker.stop()
+    }
+  })
+
+  it('cancels Host requests once when stop disposes the worker', async () => {
+    const events: TunnelWorkerEvent[] = []
+    const script = `
+      process.send({ type: 'ready' })
+      process.on('message', command => {
+        if (command.type === 'shutdown') process.exit(0)
+        if (command.type === 'add-share') process.send({ type: 'share-rpc-request', registrationToken: command.registrationToken, token: 'stopped-request', shareId: 'share', id: 1,
+          body: { op: 'read' }, actor: { providerId: 'mock', tenantId: 'tenant', subjectId: 'alice' } })
+      })
+    `
+    const worker = new TunnelWorker({ command: { executable: process.execPath, args: ['-e', script] } })
+    onTestFinished(() => worker.stop())
+    worker.onEvent((event) => { events.push(event) })
+    worker.send({ type: 'add-share', share })
+    try {
+      await expect.poll(() => events.some(event => event.type === 'share-rpc-request')).toBe(true)
+      await worker.stop()
+      expect(events.filter(event => event.type === 'share-rpc-cancel')).toEqual([
+        { type: 'share-rpc-cancel', registrationToken: events.find(event => event.type === 'share-rpc-request')!.registrationToken, token: 'stopped-request', id: 1, shareId: 'share' },
+      ])
+      worker.start()
+      await worker.stop()
+      expect(events.filter(event => event.type === 'ready')).toHaveLength(1)
+    } finally {
+      await worker.stop()
+    }
+  })
+
+  it('marks connected shares offline when the worker exits', async () => {
+    const events: Array<{ type: string; shareId?: string }> = []
+    const script = `
+      process.send({ type: 'ready' })
+      process.on('message', command => {
+        if (command.type === 'shutdown') process.exit(0)
+        if (command.type === 'add-share') {
+          process.send({ type: 'share-connected', registrationToken: command.registrationToken, shareId: 'share-1' })
+          setTimeout(() => process.exit(7), 10)
+        }
+      })
+    `
+    const worker = new TunnelWorker({
+      command: { executable: process.execPath, args: ['-e', script] },
+    })
+    onTestFinished(() => worker.stop())
+    worker.onEvent((event) => { events.push(event) })
+    worker.send({ type: 'add-share', share: { ...share, shareId: 'share-1' } })
+
+    await expect.poll(() => events.some(event => event.type === 'share-connected')).toBe(true)
+    await expect.poll(() => events.some(event => event.type === 'share-error' && event.shareId === 'share-1')).toBe(true)
+    await worker.stop()
+  })
+
+  it('keeps a share whose socket dropped expected until the worker itself exits', async () => {
+    const events: Array<{ type: string; shareId?: string }> = []
+    const script = `
+      process.send({ type: 'ready' })
+      process.on('message', command => {
+        if (command.type === 'shutdown') process.exit(0)
+        if (command.type === 'add-share') {
+          process.send({ type: 'share-connected', registrationToken: command.registrationToken, shareId: 'share-2' })
+          process.send({ type: 'share-closed', registrationToken: command.registrationToken, shareId: 'share-2' })
+          setTimeout(() => process.exit(7), 10)
+        }
+      })
+    `
+    const worker = new TunnelWorker({
+      command: { executable: process.execPath, args: ['-e', script] },
+    })
+    onTestFinished(() => worker.stop())
+    worker.onEvent((event) => { events.push(event) })
+    worker.send({ type: 'add-share', share: { ...share, shareId: 'share-2' } })
+
+    await expect.poll(() => events.some(event => event.type === 'share-closed')).toBe(true)
+    await expect.poll(() => events.some(event => event.type === 'share-error' && event.shareId === 'share-2')).toBe(true)
+    await worker.stop()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/user-origin.client.spec.tsx b/packages/experimental/liveshare/tests/user-origin.client.spec.tsx
new file mode 100644
index 0000000000..ac3975ba1c
--- /dev/null
+++ b/packages/experimental/liveshare/tests/user-origin.client.spec.tsx
@@ -0,0 +1,158 @@
+// @vitest-environment jsdom
+/**
+ * Shared-session attribution above Chat's official user row.
+ *
+ * The durable `user/message` source carries the share-viewer principal only
+ * for a caller other than the owner. The client registers one chain entry in
+ * Chat's `conversation.chat.user.before` seat; its selector elects exactly the
+ * share-viewer sources and the component renders the Relay-asserted author.
+ */
+
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { cleanup, render } from '@testing-library/react'
+import { createElement } from 'react'
+import { afterEach, describe, expect, it, onTestFinished } from 'vitest'
+import { apply } from '../src/client/index.ts'
+import { de, en, es, fr, ja, NS, pt, ru, zh } from '../src/client/locales.ts'
+import { shareViewerAuthor, shareViewerSubject, SharedSessionOrigin } from '../src/client/user-origin.tsx'
+import { forgetOwnerDisplay } from '../src/client/owner-display.ts'
+
+afterEach(() => { forgetOwnerDisplay(); cleanup() })
+
+/** One durable user message source written for a share reader. */
+const SHARED = {
+  kind: 'user',
+  rpcId: 'rpc-shared',
+  principal: {
+    kind: 'share-viewer',
+    shareId: 'share-1',
+    actor: { providerId: 'relay', tenantId: 'tenant', subjectId: 'subject-42' },
+  },
+}
+
+/** A source that recorded the Relay display name beside the subject. */
+const SHARED_NAMED = {
+  ...SHARED,
+  principal: { ...SHARED.principal, actor: { ...SHARED.principal.actor, displayName: '许翰翔' } },
+}
+
+/** The same source by the owner, and a source with no principal at all. */
+const OWNER = { kind: 'user', rpcId: 'rpc-owner' }
+
+/** The subject a persisted source names, or undefined for another author. */
+describe('shareViewerSubject', () => {
+  it.each([
+    ['a string source', 'user'],
+    ['a null source', null],
+    ['an undefined source', undefined],
+    ['an owner-authored source', OWNER],
+    ['a non-user source', { kind: 'other', principal: SHARED.principal }],
+    ['a null principal', { kind: 'user', principal: null }],
+    ['a non-object principal', { kind: 'user', principal: 'share-viewer' }],
+    ['another principal kind', { kind: 'user', principal: { kind: 'owner' } }],
+    ['a principal without a share id', { kind: 'user', principal: { kind: 'share-viewer', actor: { subjectId: 's' } } }],
+    ['a non-string share id', { kind: 'user', principal: { kind: 'share-viewer', shareId: 7, actor: { subjectId: 's' } } }],
+    ['a blank share id', { kind: 'user', principal: { kind: 'share-viewer', shareId: '  ', actor: { subjectId: 's' } } }],
+    ['a principal without an actor', { kind: 'user', principal: { kind: 'share-viewer', shareId: 's' } }],
+    ['a null actor', { kind: 'user', principal: { kind: 'share-viewer', shareId: 's', actor: null } }],
+    ['an actor without a subject', { kind: 'user', principal: { kind: 'share-viewer', shareId: 's', actor: {} } }],
+    ['a non-string subject', { kind: 'user', principal: { kind: 'share-viewer', shareId: 's', actor: { subjectId: 42 } } }],
+    ['a blank subject', { kind: 'user', principal: { kind: 'share-viewer', shareId: 's', actor: { subjectId: '   ' } } }],
+  ])('names no subject for %s', (_label, source) => {
+    expect(shareViewerSubject(source)).toBeUndefined()
+  })
+
+  it('states the Relay-asserted subject exactly as persisted', () => {
+    expect(shareViewerSubject(SHARED)).toBe('subject-42')
+    expect(shareViewerSubject({ ...SHARED, clientTimeZone: 'Asia/Shanghai' })).toBe('subject-42')
+  })
+
+  it('states the recorded display name and ignores a malformed one', () => {
+    expect(shareViewerAuthor(SHARED_NAMED)).toEqual({ subjectId: 'subject-42', displayName: '许翰翔' })
+    expect(shareViewerAuthor({
+      ...SHARED,
+      principal: { ...SHARED.principal, actor: { ...SHARED.principal.actor, displayName: '  ' } },
+    })).toEqual({ subjectId: 'subject-42' })
+    expect(shareViewerAuthor({
+      ...SHARED,
+      principal: { ...SHARED.principal, actor: { ...SHARED.principal.actor, displayName: 7 } },
+    })).toEqual({ subjectId: 'subject-42' })
+  })
+})
+
+/** The registered chain seat, its selector, and its component. */
+describe('shared-session origin chain', () => {
+  it('registers one chain entry whose selector elects only a share-viewer user row', async () => {
+    const { runtime } = await renderBench()
+    const entries = runtime.slots.entriesOfSlot('conversation.chat.user.before')
+    expect(entries).toHaveLength(1)
+    expect(entries[0]?.component).toBe(SharedSessionOrigin)
+    expect(entries[0]?.locale).toBe(NS)
+    const select = entries[0]?.select as (owner: { source: unknown; kind: 'user' | 'steering' }) => unknown
+    expect(select({ source: SHARED, kind: 'user' })).toEqual({ subjectId: 'subject-42' })
+    expect(select({ source: SHARED_NAMED, kind: 'user' })).toEqual({ subjectId: 'subject-42', displayName: '许翰翔' })
+    expect(select({ source: OWNER, kind: 'user' })).toBeNull()
+    expect(select({ source: SHARED, kind: 'steering' })).toBeNull()
+    expect(select({ source: { kind: 'user', principal: { kind: 'owner' } }, kind: 'user' })).toBeNull()
+  })
+
+  it('renders the elected author in the active locale', () => {
+    const view = render(createElement(SharedSessionOrigin, {
+      matched: { subjectId: 'subject-42' }, t: translate('zh'),
+    } as never))
+    expect(view.container.querySelector('[data-liveshare-origin="subject-42"]')?.textContent)
+      .toBe('来自会话分享【subject-42】')
+    view.unmount()
+    const named = render(createElement(SharedSessionOrigin, {
+      matched: { subjectId: 'subject-42', displayName: '许翰翔' }, t: translate('en'),
+    } as never))
+    expect(named.container.querySelector('[data-liveshare-origin="subject-42"]')?.textContent)
+      .toBe('From a shared session [许翰翔]')
+  })
+
+  it('defines the shared-session line in every dictionary', () => {
+    const dictionaries = { zh, en, ja, es, fr, de, ru, pt }
+    const keys = Object.keys(zh).sort()
+    for (const dictionary of Object.values(dictionaries)) {
+      expect(Object.keys(dictionary).sort()).toEqual(keys)
+      expect(dictionary['inputOrigin.sharedSession']).toContain('{subjectId}')
+    }
+  })
+})
+
+/** One package dictionary as the component's translator. */
+function translate(locale: 'zh' | 'en') {
+  const dictionary = locale === 'zh' ? zh : en
+  return (key: keyof typeof zh, params?: Record<string, string | number>): string => {
+    let result = dictionary[key] ?? key
+    for (const [name, value] of Object.entries(params ?? {})) result = result.replace(`{${name}}`, String(value))
+    return result
+  }
+}
+
+/**
+ * Mount the Liveshare client face over the real slot registry and declare Chat's
+ * before-row chain.
+ * @returns The runtime carrying the registered chain entry.
+ */
+async function renderBench() {
+  const runtime = await SlotTestRuntime.create()
+  onTestFinished(() => runtime.dispose())
+  const locale = new LocaleRuntime(runtime.ctx)
+  locale.setLocale('zh')
+  runtime.ctx.provide('locale', locale)
+  runtime.slots.installLocale(locale)
+  // The test runtime owns the Remote double; the face only needs its mount and
+  // share-management namespace to reach the owner branch.
+  runtime.remote.$mount = async () => async () => {}
+  runtime.remote.provideNamespaces({ liveshareShares: {} })
+  await runtime.declare({ 'conversation.chat.user.before': { kind: 'chain', scope: 'session' } as never })
+  // The origin registration and dictionaries install synchronously; the owner
+  // Remote mount that follows is irrelevant to this face test.
+  await runtime.mount({
+    inject: ['slots', 'locale', 'remote'],
+    apply: (ctx) => { void apply(ctx) },
+  })
+  return { runtime }
+}
diff --git a/packages/experimental/liveshare/tests/viewer-access-policy.spec.ts b/packages/experimental/liveshare/tests/viewer-access-policy.spec.ts
new file mode 100644
index 0000000000..7bbd3f7c99
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-access-policy.spec.ts
@@ -0,0 +1,656 @@
+/**
+ * The `share-viewer` remote access policy, decided through a real remote access service: which actions a
+ * share reader may take on which resource, which Session notifications it receives, the refusal codes the
+ * reader page classifies, and the access snapshot the reader page opens with.
+ */
+import { afterEach, describe, expect, it } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import RemoteAccessService, {
+  type RemoteAccessAction,
+  type RemoteAccessGrant,
+  type RemoteAccessResource,
+} from '@deepseek-ai/dsh-api-remote-access'
+import { SessionId } from '@deepseek-ai/dsh-session'
+import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
+import { WorkspaceId } from '@deepseek-ai/dsh-workspace'
+import type { ForkPromptDecision, ForkRecord } from '../src/host/fork-registry.ts'
+import type { ForkShareState, ViewerSessionMode } from '../src/host/fork-policy.ts'
+import {
+  POLICY_DECIDED_ACTIONS,
+  createViewerAccessPolicy,
+  readerWriteRefusal,
+  type ViewerAccessFacts,
+} from '../src/host/viewer-access-policy.ts'
+import type { RemoteAccessEndpoint } from '@deepseek-ai/dsh-api-remote-access/types'
+import type { ViewerCapabilityGroup } from '../src/host/viewer-declarations.ts'
+import { shareViewerPrincipal } from '../src/host/viewer-principal.ts'
+
+const reader = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_reader' }
+const other = { ...reader, subjectId: 'ou_other' }
+const READER = shareViewerPrincipal('share', reader)
+const GLOBAL: RemoteAccessResource = { kind: 'global' }
+const session = (id: string): RemoteAccessResource => ({ kind: 'session', id: SessionId(id) })
+const workspace = (id: string): RemoteAccessResource => ({ kind: 'workspace', id: WorkspaceId(id) })
+const CALL = { request: {} }
+
+/**
+ * The actions the served viewer page's startup and render paths need, listed once here as the contract the
+ * policy must cover: an action a surface needs and a role omits does not fail loudly, it leaves that
+ * surface stating the read-only fact. The assembled-page fixture models its access snapshot from the same
+ * set, so the two are read together when a role changes.
+ */
+const GLOBAL_ACTIONS = [
+  'commands/list', 'llm/listConfigurableProviders', 'llm/listProviders', 'session/canOpenWorkspacePath',
+  'session/control', 'session/list', 'session/modelCatalog', 'workspace/follow',
+] as const
+/** Session reads the served page's startup and render paths need; see {@link GLOBAL_ACTIONS}. */
+const SESSION_READS = [
+  'commands/list', 'fileUploads/upload', 'goals/get', 'session/attachment', 'session/control',
+  'session/events', 'session/follow', 'session/list', 'session/observeEvent', 'session/observeProjections',
+  'session/observeState', 'session/page', 'session/projections', 'session/state', 'session/wait',
+  'skills/list', 'toolResults/watch', 'workspace/follow',
+] as const
+const SESSION_EVENTS = [
+  'event:api-session/activity', 'event:api-session/added', 'event:api-session/error',
+  'event:api-session/removed', 'event:api-session/status',
+] as const
+
+interface FixtureOptions {
+  /** Drivable tier; `null` publishes a share whose tier this host cannot establish. */
+  readonly mode?: ViewerSessionMode | null
+  /** The share's own fork switch; on unless a case turns it off. */
+  readonly allowsFork?: boolean
+  readonly stopped?: boolean
+  readonly expiresAt?: string
+  readonly published?: boolean
+  readonly admitted?: boolean
+  readonly confined?: boolean
+  readonly ceilings?: readonly string[]
+}
+
+const roots: Context[] = []
+
+afterEach(async () => {
+  await Promise.all(roots.splice(0).map(ctx => ctx.fiber.dispose()))
+})
+
+/** The declaring plugin every capability in these cases is attributed to. */
+const PLUGIN = 'mekGit'
+
+/** One plugin's offered (or selected) endpoints, in the shape the registry and the share record use. */
+const capabilityGroup = (
+  readable: readonly RemoteAccessEndpoint[] = [],
+  writable: readonly RemoteAccessEndpoint[] = [],
+): ViewerCapabilityGroup =>
+  ({ plugin: PLUGIN, readable, writable })
+
+/** What the plugins offer and what this share's owner selected; both start empty and are mutable. */
+interface CapabilityState {
+  declared: ViewerCapabilityGroup[]
+  selected: ViewerCapabilityGroup[]
+}
+
+function facts(
+  options: FixtureOptions = {},
+  capabilities: CapabilityState = { declared: [], selected: [] },
+): ViewerAccessFacts {
+  const children: ForkRecord[] = [
+    { childSessionId: 'own-child', shareId: 'share', sourceSessionId: 'source', boundary: 1, creator: reader, createdAt: '' },
+    { childSessionId: 'revoked-child', shareId: 'share', sourceSessionId: 'source', boundary: 1, creator: reader,
+      createdAt: '', revokedAt: '2026-10-13T00:00:00Z' },
+    { childSessionId: 'other-child', shareId: 'share', sourceSessionId: 'source', boundary: 1, creator: other, createdAt: '' },
+    { childSessionId: 'foreign-child', shareId: 'foreign', sourceSessionId: 'foreign-source', boundary: 1, creator: reader, createdAt: '' },
+  ]
+  const mode = options.mode === undefined ? 'write' : options.mode
+  const share: ForkShareState = {
+    shareId: 'share',
+    sessionId: 'source',
+    allowsFork: options.allowsFork ?? true,
+    viewerAdmitted: true,
+    stopped: options.stopped ?? false,
+    ...(mode === null ? {} : { sessionMode: mode }),
+    ...(options.expiresAt === undefined ? {} : { expiresAt: options.expiresAt }),
+    viewerCapabilities: capabilities.selected,
+  }
+  return {
+    share: shareId => shareId === 'share' && options.published !== false ? share : undefined,
+    viewerAdmitted: () => options.admitted !== false,
+    sourceConfined: () => options.confined ?? true,
+    forks: {
+      find: id => children.find(child => child.childSessionId === id),
+      listForShare: shareId => children.filter(child => child.shareId === shareId),
+      allowsPrompt: (id): ForkPromptDecision => (options.ceilings ?? ['own-child']).includes(id)
+        ? { ok: true }
+        : { ok: false, code: 'fork-ceiling-uninstalled', message: 'no ceiling' },
+    },
+    workspaces: () => [
+      { id: WorkspaceId('shared-ws'), sessionIds: [SessionId('private'), SessionId('source')] },
+      { id: WorkspaceId('child-ws'), sessionIds: [SessionId('own-child')] },
+      { id: WorkspaceId('private-ws'), sessionIds: [SessionId('private'), SessionId('other-child')] },
+    ],
+    declaredCapabilities: () => capabilities.declared,
+  }
+}
+
+async function fixture(options: FixtureOptions = {}) {
+  const ctx = new Context()
+  roots.push(ctx)
+  await ctx.plugin(TypertRegistry)
+  await ctx.plugin(RemoteAccessService)
+  const access = ctx.remoteAccess
+  const capabilities: CapabilityState = { declared: [], selected: [] }
+  access.registerPolicy('share-viewer', createViewerAccessPolicy(facts(options, capabilities)))
+  const replace = (target: ViewerCapabilityGroup[], groups: readonly ViewerCapabilityGroup[]) => {
+    target.splice(0, target.length, ...groups)
+  }
+  const decide = (action: RemoteAccessAction, resource: RemoteAccessResource, args?: Readonly<Record<string, unknown>>) =>
+    access.decide({ principal: READER, action, resources: [resource], ...(args === undefined ? {} : { args }) })
+  const grants = (principal = READER): readonly RemoteAccessGrant[] => {
+    const baseline = access.snapshotFor(principal)
+    return baseline.owner ? [] : baseline.grants
+  }
+  return {
+    access,
+    decide,
+    grants,
+    /** What the mounted plugins currently offer, as registering them through {@link ViewerDeclarations} reports. */
+    offer: (groups: readonly ViewerCapabilityGroup[]) => { replace(capabilities.declared, groups) },
+    /** What this share's owner selected in the share panel. */
+    select: (groups: readonly ViewerCapabilityGroup[]) => { replace(capabilities.selected, groups) },
+  }
+}
+
+const ALLOW = { kind: 'allow' }
+const deny = (reason: string) => ({ kind: 'deny', reason })
+
+describe('share reader access policy', () => {
+  it.each([
+    [{ published: false }, 'share-not-found'],
+    [{ stopped: true }, 'share-stopped'],
+    [{ expiresAt: '2000-01-01T00:00:00Z' }, 'share-expired'],
+    [{ admitted: false }, 'viewer-not-authorized'],
+  ] as const)('binds nothing and reports the share refusal while the share does not serve the reader (%o)', async (options, reason) => {
+    const { decide, grants } = await fixture(options)
+    expect(decide('session/list', GLOBAL)).toEqual(deny(reason))
+    expect(decide('session/page', session('source'))).toEqual(deny(reason))
+    expect(decide('session/prompt', session('source'), CALL)).toEqual(deny(reason))
+    expect(decide('event:api-session/status', session('source'))).toEqual(deny(reason))
+    expect(grants()).toEqual([])
+  })
+
+  it('allows the global reads and refuses every other action on the global resource as read-only', async () => {
+    const { decide } = await fixture()
+    for (const action of GLOBAL_ACTIONS) expect(decide(action, GLOBAL)).toEqual(ALLOW)
+    for (const action of ['settings/describe', 'goals/get', 'session/page', 'session/follow', 'session/create',
+      'session/search', 'event:api-session/status'] as const) {
+      expect(decide(action, GLOBAL)).toEqual(deny('liveshare/read-only'))
+    }
+  })
+
+  it('allows Session reads of the shared Session and the reader’s own forks only', async () => {
+    const { decide } = await fixture()
+    for (const id of ['source', 'own-child', 'revoked-child']) {
+      for (const action of SESSION_READS) expect(decide(action, session(id))).toEqual(ALLOW)
+    }
+    for (const id of ['private', 'other-child', 'foreign-child']) {
+      for (const action of SESSION_READS) expect(decide(action, session(id))).toEqual(deny('liveshare/read-only'))
+    }
+    expect(decide('session/rename', session('source'))).toEqual(deny('liveshare/read-only'))
+    // Only the reader's own fork may be renamed; the shared Session keeps fork as its one Session verb.
+    expect(decide('session/rename', session('own-child'))).toEqual(ALLOW)
+    expect(decide('session/rename', session('other-child'))).toEqual(deny('liveshare/read-only'))
+  })
+
+  it('forwards Session notifications about the shared Session and the reader’s own forks only', async () => {
+    const { decide } = await fixture()
+    for (const id of ['source', 'own-child', 'revoked-child']) {
+      for (const action of SESSION_EVENTS) expect(decide(action, session(id))).toEqual(ALLOW)
+    }
+    for (const id of ['private', 'other-child', 'foreign-child']) {
+      for (const action of SESSION_EVENTS) expect(decide(action, session(id)).kind).toBe('deny')
+    }
+    expect(decide('event:api-session/status', workspace('shared-ws')).kind).toBe('deny')
+    expect(decide('event:commands/change', session('source')).kind).toBe('deny')
+  })
+
+  it.each([
+    ['view', false], ['view', true], ['write', false], ['write', true],
+  ] as const)('allows attachment upload on every Session the reader can see (mode=%s, fork=%s)', async (mode, allowsFork) => {
+    const { decide } = await fixture({ mode, allowsFork })
+    // Neither the tier nor the fork switch decides an attachment: upload follows the visibility the read
+    // role already grants, so every readable Session accepts files.
+    for (const id of ['source', 'own-child', 'revoked-child']) {
+      expect(decide('fileUploads/upload', session(id))).toEqual(ALLOW)
+    }
+    // Another reader's fork, a foreign share's fork, and a Session the reader cannot see stay read-only.
+    for (const id of ['other-child', 'foreign-child', 'private']) {
+      expect(decide('fileUploads/upload', session(id))).toEqual(deny('liveshare/read-only'))
+    }
+    // A share whose tier this host cannot establish is still visible, so it still accepts files.
+    expect((await fixture({ mode: null })).decide('fileUploads/upload', session('source'))).toEqual(ALLOW)
+  }, 10_000)
+
+  it('follows a Workspace only while it holds a Session the reader can see', async () => {
+    const { decide } = await fixture()
+    expect(decide('workspace/follow', workspace('shared-ws'))).toEqual(ALLOW)
+    expect(decide('workspace/follow', workspace('child-ws'))).toEqual(ALLOW)
+    expect(decide('workspace/follow', workspace('private-ws'))).toEqual(deny('liveshare/read-only'))
+    expect(decide('workspace/follow', workspace('missing-ws'))).toEqual(deny('liveshare/read-only'))
+    expect(decide('workspace/rename', workspace('shared-ws'))).toEqual(deny('liveshare/read-only'))
+  })
+
+  it('allows forking the shared Session and the reader’s own active fork while the share’s switch is on', async () => {
+    // Forking is its own switch: both tiers may carry it, and a share whose owner turned it off refuses.
+    expect((await fixture({ mode: 'view' })).decide('session/fork', session('source'), CALL)).toEqual(ALLOW)
+    expect((await fixture({ mode: 'write' })).decide('session/fork', session('source'), CALL)).toEqual(ALLOW)
+    expect((await fixture({ allowsFork: false })).decide('session/fork', session('source'), CALL))
+      .toEqual(deny('fork-not-permitted'))
+    const { decide } = await fixture()
+    // The reader's own fork carries the same fork verb as the source grant, under the same switch.
+    expect(decide('session/fork', session('own-child'), CALL)).toEqual(ALLOW)
+    expect((await fixture({ allowsFork: false })).decide('session/fork', session('own-child'), CALL))
+      .toEqual(deny('fork-not-permitted'))
+    expect(decide('session/fork', session('private'), CALL)).toEqual(deny('source-session-mismatch'))
+    // A revoked fork is kept for reading only, so neither fork nor rename is offered on it.
+    expect(decide('session/fork', session('revoked-child'), CALL)).toEqual(deny('fork-source-revoked'))
+    expect(decide('session/rename', session('revoked-child'))).toEqual(deny('fork-source-revoked'))
+  })
+
+  it('keeps fork and rename on separate roles for the reader’s own child', async () => {
+    const allowed = await fixture()
+    expect(allowed.decide('session/fork', session('own-child'), CALL)).toEqual(ALLOW)
+    expect(allowed.decide('session/rename', session('own-child'))).toEqual(ALLOW)
+    // The owner's fork switch gates the fork role alone, so turning it off leaves the child role as it was.
+    const switchedOff = await fixture({ allowsFork: false })
+    expect(switchedOff.decide('session/fork', session('own-child'), CALL)).toEqual(deny('fork-not-permitted'))
+    expect(switchedOff.decide('session/rename', session('own-child'))).toEqual(ALLOW)
+    // The child role binds only the reader's own forks: the source and another reader's fork have no rename.
+    expect(allowed.decide('session/rename', session('source'))).toEqual(deny('liveshare/read-only'))
+    expect(allowed.decide('session/rename', session('other-child'))).toEqual(deny('liveshare/read-only'))
+  })
+
+  it('allows prompting the shared Session in either tier, and only while it is confined', async () => {
+    expect((await fixture()).decide('session/prompt', session('source'), CALL)).toEqual(ALLOW)
+    // The view tier drives the shared Session too; what it cannot do is write, which the confined layer
+    // refuses per tool rather than the access snapshot.
+    expect((await fixture({ mode: 'view' })).decide('session/prompt', session('source'), CALL)).toEqual(ALLOW)
+    expect((await fixture({ confined: false })).decide('session/prompt', session('source'), CALL))
+      .toEqual(deny('source-write-unavailable'))
+  })
+
+  it('allows stopping the shared Session in either tier, and only while it is confined', async () => {
+    const { decide } = await fixture()
+    expect(decide('session/cancel', session('source'))).toEqual(ALLOW)
+    // The cancel is dispatched like a prompt, so the same confinement rule decides the concrete call.
+    expect(decide('session/cancel', session('source'), CALL)).toEqual(ALLOW)
+    expect((await fixture({ confined: false })).decide('session/cancel', session('source')))
+      .toEqual(deny('source-write-unavailable'))
+    expect((await fixture({ confined: false })).decide('session/cancel', session('source'), CALL))
+      .toEqual(deny('source-write-unavailable'))
+  })
+
+  it('allows driving the reader’s own live fork and names why another Session is refused', async () => {
+    const { decide } = await fixture()
+    expect(decide('session/prompt', session('own-child'))).toEqual(ALLOW)
+    expect(decide('session/prompt', session('own-child'), CALL)).toEqual(ALLOW)
+    expect(decide('session/cancel', session('own-child'), CALL)).toEqual(ALLOW)
+    expect(decide('session/prompt', session('revoked-child'), CALL)).toEqual(deny('fork-source-revoked'))
+    expect(decide('session/cancel', session('revoked-child'))).toEqual(deny('fork-source-revoked'))
+    expect(decide('session/prompt', session('other-child'), CALL)).toEqual(deny('fork-viewer-mismatch'))
+    expect(decide('session/prompt', session('foreign-child'), CALL)).toEqual(deny('fork-unknown-child'))
+    expect(decide('session/cancel', session('private'), CALL)).toEqual(deny('fork-unknown-child'))
+    // A branch this reader made is driven in either tier.
+    expect((await fixture({ mode: 'view' })).decide('session/prompt', session('own-child'), CALL)).toEqual(ALLOW)
+  })
+
+  it('requires the installed ceiling only for a concrete fork prompt', async () => {
+    const { decide } = await fixture({ ceilings: [] })
+    // A snapshot keeps the composer of a cold fork available; preparing it on the first prompt installs the ceiling.
+    expect(decide('session/prompt', session('own-child'))).toEqual(ALLOW)
+    expect(decide('session/prompt', session('own-child'), CALL)).toEqual(deny('fork-ceiling-uninstalled'))
+    expect(decide('session/cancel', session('own-child'), CALL)).toEqual(ALLOW)
+  })
+
+  it('reads a share whose tier this host cannot establish, and drives nothing of it', async () => {
+    const { decide } = await fixture({ mode: null })
+    expect(decide('session/page', session('source'))).toEqual(ALLOW)
+    expect(decide('session/prompt', session('source'), CALL)).toEqual(deny('source-write-unavailable'))
+    // The switch is independent of the tier, so forking still answers for it.
+    expect(decide('session/fork', session('source'), CALL)).toEqual(ALLOW)
+    // The reader's own branch is driven whatever the share's tier turns out to be.
+    expect(decide('session/prompt', session('own-child'), CALL)).toEqual(ALLOW)
+    expect((await fixture({ mode: null, allowsFork: false })).decide('session/fork', session('source'), CALL))
+      .toEqual(deny('fork-not-permitted'))
+  })
+
+  it('refuses a call unless every resource it touches is allowed', async () => {
+    const { access } = await fixture()
+    expect(access.decide({ principal: READER, action: 'workspace/follow', resources: [workspace('shared-ws'), session('private')] }))
+      .toEqual(deny('liveshare/read-only'))
+    expect(access.decide({ principal: READER, action: 'workspace/follow', resources: [workspace('shared-ws'), session('source')] }))
+      .toEqual(ALLOW)
+  })
+
+  it('opens the reader with grants on global, the shared Session, its own forks, and the Workspaces holding them', async () => {
+    const { grants } = await fixture()
+    const reads = [...SESSION_READS]
+    expect(grants()).toEqual([
+      { resource: GLOBAL, actions: [...GLOBAL_ACTIONS].sort() },
+      { resource: session('source'), actions: [...reads, 'session/cancel', 'session/fork', 'session/prompt'].sort() },
+      // The reader's own fork carries the source grant's fork verb, and is the only Session it may rename.
+      { resource: session('own-child'), actions: [...reads, 'session/cancel', 'session/fork', 'session/prompt',
+        'session/rename'].sort() },
+      // A revoked fork stays readable, so the page states it as read-only rather than unknown.
+      { resource: session('revoked-child'), actions: [...reads].sort() },
+      { resource: workspace('shared-ws'), actions: ['workspace/follow'] },
+      { resource: workspace('child-ws'), actions: ['workspace/follow'] },
+    ])
+    // Another reader of the same share holds its own forks, not this reader's.
+    expect(grants(shareViewerPrincipal('share', other)).map(grant => grant.resource)).toEqual([
+      GLOBAL, session('source'), session('other-child'), workspace('shared-ws'), workspace('private-ws'),
+    ])
+  })
+
+  it('leaves actions whose condition refuses out of the snapshot', async () => {
+    const sourceActions = async (options: FixtureOptions) =>
+      (await fixture(options)).grants().find(grant => grant.resource.kind === 'session' && grant.resource.id === 'source')?.actions
+    const childActions = async (options: FixtureOptions) =>
+      (await fixture(options)).grants().find(grant => grant.resource.kind === 'session' && grant.resource.id === 'own-child')?.actions
+    const driving = [...SESSION_READS, 'session/cancel', 'session/fork', 'session/prompt'].sort()
+    expect(await sourceActions({ mode: 'view' })).toEqual(driving)
+    expect(await sourceActions({ mode: 'write' })).toEqual(driving)
+    // Without the confined layer the Session is not driven, and without the switch it is not forked.
+    expect(await sourceActions({ confined: false })).toEqual([...SESSION_READS, 'session/fork'].sort())
+    expect(await sourceActions({ allowsFork: false })).toEqual([...SESSION_READS, 'session/cancel', 'session/prompt'].sort())
+    const { grants } = await fixture({ mode: 'view' })
+    expect(grants().find(grant => grant.resource.kind === 'session' && grant.resource.id === 'own-child')?.actions)
+      .toEqual([...SESSION_READS, 'session/cancel', 'session/fork', 'session/prompt', 'session/rename'].sort())
+    // The switch removes the child's fork alone: the child role and its rename stay in the snapshot.
+    expect(await childActions({ allowsFork: false }))
+      .toEqual([...SESSION_READS, 'session/cancel', 'session/prompt', 'session/rename'].sort())
+  })
+})
+
+describe('derived policy actions', () => {
+  it('derives exactly the actions the viewer roles list', () => {
+    // These arrays are the served page's contract, written before the classification table existed; the
+    // derived set must reproduce their union so the table cannot add or remove a reader action.
+    const roleActions = new Set<string>([
+      ...GLOBAL_ACTIONS,
+      ...SESSION_READS,
+      ...SESSION_EVENTS,
+      'session/prompt',
+      'session/cancel',
+      'session/fork',
+      'session/rename',
+      'fileUploads/upload',
+    ])
+    expect([...POLICY_DECIDED_ACTIONS].sort()).toEqual([...roleActions].sort())
+  })
+})
+
+describe('viewer page startup contract', () => {
+  it('allows following the reader’s own access stream, which no role has to list', async () => {
+    const { decide } = await fixture()
+    // `RemoteAccessService.decide` allows this action before it consults any policy, so the page's own
+    // snapshot stream opens whatever the share grants. A role entry here would be unreachable code.
+    expect(decide('remoteAccess/follow', GLOBAL)).toEqual(ALLOW)
+    expect(decide('remoteAccess/follow', session('source'))).toEqual(ALLOW)
+  })
+
+  it('keeps the owner’s own surfaces refused and out of the reader’s snapshot', async () => {
+    const { decide, grants } = await fixture()
+    const ownerOnly = ['account/watch', 'job/list', 'job/follow', 'settings/describe',
+      'credentials/describe', 'pluginManager/listPlugins', 'schedule/list'] as const
+    for (const action of ownerOnly) expect(decide(action, GLOBAL)).toEqual(deny('liveshare/read-only'))
+    const granted = new Set(grants().flatMap(grant => [...grant.actions]))
+    for (const action of ownerOnly) expect(granted.has(action)).toBe(false)
+  })
+
+  it('grants every action the served page’s startup and render paths need', async () => {
+    // The page reads only this snapshot, so an action it needs here and the policy omits leaves a
+    // surface silently stating the read-only fact instead of failing loudly.
+    const source = async (options: FixtureOptions) =>
+      (await fixture(options)).grants().find(grant => grant.resource.kind === 'session' && grant.resource.id === 'source')?.actions ?? []
+    const { grants } = await fixture()
+    const global = grants().find(grant => grant.resource.kind === 'global')?.actions ?? []
+    for (const action of GLOBAL_ACTIONS) expect(global).toContain(action)
+    for (const action of SESSION_READS) expect(await source({})).toContain(action)
+    // The driving actions ride the same reads, and the confined layer is what decides them.
+    for (const action of ['session/prompt', 'session/cancel', 'session/fork']) expect(await source({})).toContain(action)
+    // The tier decides no driving action: both tiers carry the prompt and the fork switch of their own.
+    for (const action of SESSION_READS) expect(await source({ mode: 'view' })).toContain(action)
+    for (const action of ['session/prompt', 'session/cancel', 'session/fork']) {
+      expect(await source({ mode: 'view' })).toContain(action)
+    }
+    for (const action of ['session/prompt', 'session/cancel']) {
+      expect(await source({ confined: false })).not.toContain(action)
+    }
+  })
+
+  it('drops the write actions when the share cannot drive its Session, so no surface offers writing', async () => {
+    const { grants } = await fixture({ confined: false })
+    const actions = grants().find(grant => grant.resource.kind === 'session' && grant.resource.id === 'source')?.actions ?? []
+    for (const action of SESSION_READS) expect(actions).toContain(action)
+    expect(actions).not.toContain('session/prompt')
+    expect(actions).not.toContain('session/cancel')
+  })
+})
+
+describe('reader write refusal', () => {
+  const refusal = (options: FixtureOptions, action: 'session/prompt' | 'session/cancel', sessionId: string, concrete: boolean) =>
+    readerWriteRefusal(facts(options), READER, action, sessionId, concrete)
+
+  it('applies the policy’s write rules to the shared Session and the reader’s forks', () => {
+    expect(refusal({}, 'session/prompt', 'source', true)).toBeUndefined()
+    expect(refusal({}, 'session/cancel', 'source', false)).toBeUndefined()
+    expect(refusal({}, 'session/cancel', 'source', true)).toBeUndefined()
+    expect(refusal({ confined: false }, 'session/prompt', 'source', true)).toBe('source-write-unavailable')
+    expect(refusal({ confined: false }, 'session/cancel', 'source', false)).toBe('source-write-unavailable')
+    expect(refusal({ mode: null }, 'session/cancel', 'source', false)).toBe('source-write-unavailable')
+    expect(refusal({}, 'session/prompt', 'own-child', true)).toBeUndefined()
+    expect(refusal({ ceilings: [] }, 'session/prompt', 'own-child', false)).toBeUndefined()
+    expect(refusal({ ceilings: [] }, 'session/prompt', 'own-child', true)).toBe('fork-ceiling-uninstalled')
+    expect(refusal({}, 'session/prompt', 'revoked-child', false)).toBe('fork-source-revoked')
+    expect(refusal({ mode: 'view' }, 'session/cancel', 'own-child', true)).toBeUndefined()
+    expect(refusal({}, 'session/prompt', 'other-child', true)).toBe('fork-viewer-mismatch')
+    expect(refusal({}, 'session/cancel', 'foreign-child', true)).toBe('fork-unknown-child')
+  })
+
+  it.each([
+    [{ published: false }, 'share-not-found'],
+    [{ stopped: true }, 'share-stopped'],
+    [{ expiresAt: '2000-01-01T00:00:00Z' }, 'share-expired'],
+    [{ admitted: false }, 'viewer-not-authorized'],
+  ] as const)('reports the share refusal first (%o)', (options, reason) => {
+    expect(refusal(options, 'session/prompt', 'source', true)).toBe(reason)
+    expect(refusal(options, 'session/cancel', 'own-child', false)).toBe(reason)
+  })
+})
+
+describe('plugin capabilities a share exposes', () => {
+  const READABLE = 'mekGit/getGraph'
+  const WRITABLE = 'mekGit/commit'
+  /** Every resource a served reader can see, where an exposed readable capability rides. */
+  const VISIBLE = [
+    GLOBAL, session('source'), session('own-child'), session('revoked-child'),
+    workspace('shared-ws'), workspace('child-ws'),
+  ]
+
+  it.each(['view', 'write'] as const)(
+    'allows an exposed readable capability on every resource the reader can see in the %s tier',
+    async (mode) => {
+      const { decide, offer, select, grants } = await fixture({ mode })
+      // The policy is built before both sides, so these decisions prove it reads them per decision.
+      expect(decide(READABLE, GLOBAL)).toEqual(deny('liveshare/read-only'))
+      expect(decide(READABLE, session('source'))).toEqual(deny('liveshare/read-only'))
+      offer([capabilityGroup([READABLE])])
+      // A plugin's offer is not a grant: nothing is exposed until the owner selects it in this share.
+      expect(decide(READABLE, GLOBAL)).toEqual(deny('liveshare/read-only'))
+      expect(grants().flatMap(grant => [...grant.actions])).not.toContain(READABLE)
+      select([capabilityGroup([READABLE])])
+      for (const resource of VISIBLE) expect(decide(READABLE, resource)).toEqual(ALLOW)
+    })
+
+  it('keeps an exposed capability off the resources the reader cannot see', async () => {
+    const { decide, offer, select } = await fixture()
+    offer([capabilityGroup([READABLE], [WRITABLE])])
+    select([capabilityGroup([READABLE], [WRITABLE])])
+    for (const resource of [session('private'), session('other-child'), session('foreign-child'),
+      workspace('private-ws'), workspace('missing-ws')]) {
+      expect(decide(READABLE, resource)).toEqual(deny('liveshare/read-only'))
+      expect(decide(WRITABLE, resource)).toEqual(deny('liveshare/read-only'))
+    }
+    // A revoked fork stays bound for reading only, so a writable capability carries no binding there.
+    expect(decide(READABLE, session('revoked-child'))).toEqual(ALLOW)
+    expect(decide(WRITABLE, session('revoked-child'))).toEqual(deny('liveshare/read-only'))
+  })
+
+  it('refuses again as soon as the owner clears the selection', async () => {
+    const { decide, offer, select } = await fixture()
+    offer([capabilityGroup([READABLE], [WRITABLE])])
+    select([capabilityGroup([READABLE], [WRITABLE])])
+    expect(decide(READABLE, session('source'))).toEqual(ALLOW)
+    expect(decide(WRITABLE, session('source'))).toEqual(ALLOW)
+    select([capabilityGroup()])
+    expect(decide(READABLE, session('source'))).toEqual(deny('liveshare/read-only'))
+    expect(decide(WRITABLE, session('source'))).toEqual(deny('liveshare/read-only'))
+  })
+
+  it('refuses a selection whose plugin no longer offers the endpoint', async () => {
+    const { decide, offer, select, grants } = await fixture()
+    offer([capabilityGroup([READABLE], [WRITABLE])])
+    select([capabilityGroup([READABLE], [WRITABLE])])
+    expect(decide(READABLE, session('source'))).toEqual(ALLOW)
+    // The plugin withdrew its declaration while the share still carries the owner's stale selection.
+    offer([])
+    expect(decide(READABLE, session('source'))).toEqual(deny('liveshare/read-only'))
+    expect(decide(WRITABLE, session('source'))).toEqual(deny('liveshare/read-only'))
+    expect(grants().flatMap(grant => [...grant.actions])).not.toContain(READABLE)
+    // A selection under another plugin cannot expose this plugin's endpoint either.
+    offer([capabilityGroup([READABLE])])
+    select([{ plugin: 'other-plugin', readable: [READABLE], writable: [] }])
+    expect(decide(READABLE, session('source'))).toEqual(deny('liveshare/read-only'))
+  })
+
+  it('binds no capability while the share does not serve the reader', async () => {
+    const { decide, grants, offer, select } = await fixture({ published: false })
+    offer([capabilityGroup([READABLE], [WRITABLE])])
+    select([capabilityGroup([READABLE], [WRITABLE])])
+    expect(decide(READABLE, session('source'))).toEqual(deny('share-not-found'))
+    expect(decide(WRITABLE, session('source'))).toEqual(deny('share-not-found'))
+    expect(grants()).toEqual([])
+  })
+
+  it('grants an exposed readable capability to the served page on every visible resource', async () => {
+    const { grants, offer, select } = await fixture()
+    offer([capabilityGroup([READABLE])])
+    select([capabilityGroup([READABLE])])
+    const list = grants()
+    const actionsOn = (kind: 'session' | 'workspace', id: string) =>
+      list.find(grant => grant.resource.kind === kind && grant.resource.id === id)?.actions ?? []
+    expect(list.find(grant => grant.resource.kind === 'global')?.actions ?? []).toContain(READABLE)
+    for (const id of ['source', 'own-child', 'revoked-child']) expect(actionsOn('session', id)).toContain(READABLE)
+    for (const id of ['shared-ws', 'child-ws']) expect(actionsOn('workspace', id)).toContain(READABLE)
+  })
+
+  it('exposes a writable capability only where the share mode already allows writes', async () => {
+    const write = await fixture({ mode: 'write' })
+    write.offer([capabilityGroup([], [WRITABLE])])
+    write.select([capabilityGroup([], [WRITABLE])])
+    for (const resource of [GLOBAL, session('source'), session('own-child'),
+      workspace('shared-ws'), workspace('child-ws')]) {
+      expect(write.decide(WRITABLE, resource)).toEqual(ALLOW)
+    }
+    // The owner states consent for writes only through the write tier, so a read share keeps refusing.
+    for (const mode of ['view'] as const) {
+      const { decide, offer, select } = await fixture({ mode })
+      offer([capabilityGroup([], [WRITABLE])])
+      select([capabilityGroup([], [WRITABLE])])
+      expect(decide(WRITABLE, session('source'))).toEqual(deny('share-not-writable'))
+      expect(decide(WRITABLE, GLOBAL)).toEqual(deny('share-not-writable'))
+      expect(decide(WRITABLE, workspace('shared-ws'))).toEqual(deny('share-not-writable'))
+    }
+  })
+
+  it('refuses an exposed writable capability while the source Session carries no confined layer', async () => {
+    const { decide, offer, select } = await fixture({ confined: false })
+    offer([capabilityGroup([], [WRITABLE])])
+    select([capabilityGroup([], [WRITABLE])])
+    expect(decide(WRITABLE, session('source'))).toEqual(deny('source-write-unavailable'))
+    // The capability neither allows the endpoint nor changes why the share refuses its own write.
+    expect(decide('session/prompt', session('source'), CALL)).toEqual(deny('source-write-unavailable'))
+  })
+
+  it('keeps the readable and writable selections apart', async () => {
+    const { decide, offer, select } = await fixture({ mode: 'view' })
+    offer([capabilityGroup([], [WRITABLE])])
+    // The owner selected the endpoint as readable, which the plugin never offered as readable.
+    select([capabilityGroup([WRITABLE])])
+    expect(decide(WRITABLE, session('source'))).toEqual(deny('liveshare/read-only'))
+    // Selected as writable it is exposed under the write rule, so a read-only share still refuses it.
+    select([capabilityGroup([], [WRITABLE])])
+    expect(decide(WRITABLE, session('source'))).toEqual(deny('share-not-writable'))
+    // Offered and selected as readable, the same endpoint is exposed in a read-only share.
+    offer([capabilityGroup([WRITABLE])])
+    select([capabilityGroup([WRITABLE])])
+    expect(decide(WRITABLE, session('source'))).toEqual(ALLOW)
+    // And a writable selection never exposes an endpoint as readable.
+    offer([capabilityGroup([READABLE], [READABLE])])
+    select([capabilityGroup([], [READABLE])])
+    expect(decide(READABLE, session('source'))).toEqual(deny('share-not-writable'))
+    select([capabilityGroup([READABLE])])
+    expect(decide(READABLE, session('source'))).toEqual(ALLOW)
+  })
+
+  it('keeps a writable capability out of the grants a share without writes publishes', async () => {
+    const view = await fixture({ mode: 'view' })
+    view.offer([capabilityGroup([], [WRITABLE])])
+    view.select([capabilityGroup([], [WRITABLE])])
+    expect(view.grants().flatMap(grant => [...grant.actions])).not.toContain(WRITABLE)
+    const write = await fixture({ mode: 'write' })
+    write.offer([capabilityGroup([], [WRITABLE])])
+    write.select([capabilityGroup([], [WRITABLE])])
+    const source = write.grants()
+      .find(grant => grant.resource.kind === 'session' && grant.resource.id === 'source')?.actions ?? []
+    expect(source).toContain(WRITABLE)
+  })
+
+  it('cannot replace the decision a share mode makes for a policy action', async () => {
+    const decideds: readonly RemoteAccessEndpoint[] = ['session/prompt', 'session/cancel', 'session/fork']
+    const view = await fixture({ mode: 'view' })
+    // Every isolation probe offers and selects a policy-decided action in both kinds at once.
+    view.offer([capabilityGroup(decideds, decideds)])
+    view.select([capabilityGroup(decideds, decideds)])
+    // A view-tier share drives its Session in this deployment, so the isolation probe needs the share's
+    // own switch and the reader's branch to show what the capability cannot change.
+    expect(view.decide('session/cancel', session('source'), CALL)).toEqual(ALLOW)
+    expect(view.decide('session/prompt', GLOBAL, CALL)).toEqual(deny('liveshare/read-only'))
+    const switchedOff = await fixture({ mode: 'view', allowsFork: false })
+    expect(switchedOff.decide('session/fork', session('source'), CALL)).toEqual(deny('fork-not-permitted'))
+
+    // A write share keeps its own rules: a capability neither grants beyond them nor refuses within them.
+    const unconfined = await fixture({ confined: false })
+    unconfined.offer([capabilityGroup(['session/prompt'], ['session/prompt'])])
+    unconfined.select([capabilityGroup(['session/prompt'], ['session/prompt'])])
+    expect(unconfined.decide('session/prompt', session('source'), CALL)).toEqual(deny('source-write-unavailable'))
+    const write = await fixture()
+    write.offer([capabilityGroup(['session/prompt'], ['session/prompt'])])
+    write.select([capabilityGroup(['session/prompt'], ['session/prompt'])])
+    expect(write.decide('session/prompt', session('source'), CALL)).toEqual(ALLOW)
+    // The reader's own fork keeps the child write role's ceiling decision as well.
+    const cold = await fixture({ ceilings: [] })
+    cold.offer([capabilityGroup([], ['session/prompt'])])
+    cold.select([capabilityGroup([], ['session/prompt'])])
+    expect(cold.decide('session/prompt', session('own-child'), CALL)).toEqual(deny('fork-ceiling-uninstalled'))
+  })
+
+  it('keeps an exposed policy action out of the grants where its condition refuses it', async () => {
+    const { grants, offer, select } = await fixture({ mode: 'view', confined: false })
+    offer([capabilityGroup(['session/prompt', READABLE])])
+    select([capabilityGroup(['session/prompt', READABLE])])
+    const source = grants().find(grant => grant.resource.kind === 'session' && grant.resource.id === 'source')?.actions ?? []
+    expect(source).toContain(READABLE)
+    expect(source).not.toContain('session/prompt')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-assets.spec.ts b/packages/experimental/liveshare/tests/viewer-assets.spec.ts
new file mode 100644
index 0000000000..1e1a81d121
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-assets.spec.ts
@@ -0,0 +1,336 @@
+/** Owner-side served-page resources: rendered index, shell assets, and plugin bundles for a viewer. */
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import type { WebServer } from '@deepseek-ai/dsh-host-webserver'
+import type { PeerId, PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import { readViewerAsset } from '../src/host/viewer-assets.ts'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+
+const alice = { providerId: 'mock', tenantId: 'tenant', subjectId: 'alice' }
+/** The reader's own Peer: the frontend renders that Peer's opening access rows, never a snapshot we pass. */
+const readerPeer: PeerScope = {
+  id: 'viewer-peer' as PeerId,
+  ctx: {} as Context,
+  principal: { kind: 'owner' },
+  signal: new AbortController().signal,
+  interactions: 'none',
+  dispose: async () => {},
+}
+
+/** A connection double handing every dispatch the reader's own Peer. */
+const readerConnection = { createPeer: () => readerPeer } as never
+
+function ownerContext(services: Record<string, unknown>): Context {
+  return { get: (name: string) => services[name] } as Pick<Context, 'get'> as Context
+}
+
+/**
+ * Content type the real frontend resource gives each top-level page file, keyed by the pathname the
+ * request carries. Mirrors the `MIME` table in `packages/host/frontend-static/src/index.ts`.
+ */
+const TOP_LEVEL_CONTENT_TYPES: Record<string, string> = {
+  '/manifest.webmanifest': 'application/manifest+json',
+  '/favicon.svg': 'image/svg+xml',
+  '/favicon-dark.svg': 'image/svg+xml',
+}
+
+/** A webserver double whose resource read is the only member the page reader calls. */
+const resourceReader = (
+  read: (request: Request, peer: PeerScope) => Response | Promise<Response>,
+): Pick<WebServer, 'readResource'> => ({ readResource: async (request, peer) => read(request, peer) })
+
+/** Answer one page request from the dist a real `webServer.readResource` would serve. */
+const distResource = (request: Request): Response => {
+  const pathname = decodeURIComponent(new URL(request.url).pathname)
+  if (pathname === '/' || pathname === '/index.html') {
+    return new Response('<html>owner</html>', { headers: { 'content-type': 'text/html; charset=utf-8' } })
+  }
+  if (pathname === '/assets/index.js') {
+    return new Response(new TextEncoder().encode('export {}'), {
+      headers: { 'content-type': 'text/javascript; charset=utf-8' },
+    })
+  }
+  const contentType = TOP_LEVEL_CONTENT_TYPES[pathname]
+  return contentType === undefined
+    ? new Response(null, { status: 404 })
+    : new Response(new TextEncoder().encode('served'), { headers: { 'content-type': contentType } })
+}
+
+const decode = (body: unknown): string => Buffer.from((body as { base64: string }).base64, 'base64').toString()
+
+describe('viewer page resources', () => {
+  it('answers the rendered index and shell assets from the webserver resource read', async () => {
+    const requested: string[] = []
+    const ctx = ownerContext({
+      webServer: resourceReader((request) => {
+        const url = new URL(request.url)
+        requested.push(url.pathname + url.search)
+        return distResource(request)
+      }),
+    })
+    const index = await readViewerAsset(ctx, '', readerPeer)
+    expect(index).toMatchObject({ status: 200, body: { contentType: 'text/html; charset=utf-8' } })
+    expect(decode(index.body)).toBe('<html>owner</html>')
+    expect(decode((await readViewerAsset(ctx, 'assets/index.js?v=1', readerPeer)).body)).toBe('export {}')
+    expect(await readViewerAsset(ctx, 'assets/missing.js', readerPeer)).toEqual({ status: 404, body: { error: 'asset-not-found' } })
+    // The page-relative path and its query reach the resource exactly as the page asked for them.
+    expect(requested).toEqual(['/', '/assets/index.js?v=1', '/assets/missing.js'])
+  })
+
+  it('renders the index from the reader\u2019s own Peer, not from a snapshot the owner builds', async () => {
+    const peers: PeerScope[] = []
+    const ctx = ownerContext({
+      webServer: resourceReader((_request, peer) => {
+        peers.push(peer)
+        return new Response(JSON.stringify(peer), { headers: { 'content-type': 'text/html; charset=utf-8' } })
+      }),
+    })
+
+    const index = await readViewerAsset(ctx, '', readerPeer)
+    expect(peers).toEqual([readerPeer])
+    expect(JSON.parse(decode(index.body))).toEqual(JSON.parse(JSON.stringify(readerPeer)))
+  })
+
+  it('answers plugin bundles from the client module registry, query included', async () => {
+    const requested: string[] = []
+    const ctx = ownerContext({
+      clientModules: {
+        fetchBundle: async (request: Request) => {
+          requested.push(new URL(request.url).pathname + new URL(request.url).search)
+          return request.url.includes('missing')
+            ? new Response(null, { status: 404 })
+            : new Response('bundle', { headers: { 'content-type': 'text/javascript' } })
+        },
+      },
+    })
+    const bundle = await readViewerAsset(ctx, 'plugins/??a/client.js&rev=1', readerPeer)
+    expect(bundle).toMatchObject({ status: 200, body: { contentType: 'text/javascript' } })
+    expect(decode(bundle.body)).toBe('bundle')
+    expect(requested).toEqual(['/plugins/??a/client.js&rev=1'])
+    expect(await readViewerAsset(ctx, 'plugins/missing', readerPeer)).toEqual({ status: 404, body: { error: 'asset-not-found' } })
+  })
+
+  it('answers a plugin bundle without a declared type as JavaScript', async () => {
+    const ctx = ownerContext({
+      clientModules: { fetchBundle: async () => new Response(new TextEncoder().encode('bundle')) },
+    })
+    const bundle = await readViewerAsset(ctx, 'plugins/a/client.js', readerPeer)
+    expect(bundle).toMatchObject({ status: 200, body: { contentType: 'text/javascript; charset=utf-8' } })
+    expect(decode(bundle.body)).toBe('bundle')
+  })
+
+  it('answers a served file without a declared type as opaque bytes', async () => {
+    // A resource the owner's own webserver serves from disk may carry no content type; the Relay
+    // forwards the answer as octets instead of guessing a type the owner did not state.
+    const ctx = ownerContext({
+      webServer: resourceReader(() => new Response(new TextEncoder().encode('raw'), { headers: {} })),
+    })
+    const asset = await readViewerAsset(ctx, 'assets/raw.bin', readerPeer)
+    expect(asset).toMatchObject({ status: 200, body: { contentType: 'application/octet-stream' } })
+    expect(Buffer.from((asset.body as { base64: string }).base64, 'base64').toString()).toBe('raw')
+  })
+
+  it('reports a Host without a served page as unavailable', async () => {
+    const ctx = ownerContext({})
+    expect((await readViewerAsset(ctx, '', readerPeer)).status).toBe(503)
+    expect((await readViewerAsset(ctx, 'plugins/x', readerPeer)).status).toBe(503)
+  })
+
+  it('serves only page paths to an admitted viewer', async () => {
+    const asked: string[] = []
+    let stopped = false
+    const read = createViewerReadService({
+      connection: readerConnection,
+      sharedSessionId: () => 'source',
+      forkStateOf: () => ({ shareId: 'share', sessionId: 'source', sessionMode: 'view',
+        allowsFork: false, viewerAdmitted: true, stopped }),
+      readAsset: async (path, peer) => {
+        expect(peer).toBe(readerPeer)
+        asked.push(path)
+        return { status: 200, body: { contentType: 'text/plain', base64: '' } }
+      },
+    })
+    expect((await read.answer('share', { op: 'asset', path: 'assets/a.js' }, alice)).status).toBe(200)
+    expect((await read.answer('share', { op: 'asset', path: 'api/session/list' }, alice)).status).toBe(404)
+    stopped = true
+    expect((await read.answer('share', { op: 'asset', path: '' }, alice)).status).toBe(403)
+    expect(asked).toEqual(['assets/a.js'])
+    read.close()
+    const pageless = createViewerReadService({ sharedSessionId: () => 'source' })
+    expect((await pageless.answer('share', { op: 'asset', path: '' }, alice)).status).toBe(503)
+    pageless.close()
+  })
+})
+
+/**
+ * A read service that records every path it is asked for and answers 200 to each.
+ * @returns The service, the requested paths in order, and its closer.
+ */
+function recordingService() {
+  const asked: string[] = []
+  const read = createViewerReadService({
+    connection: readerConnection,
+    sharedSessionId: () => 'source',
+    forkStateOf: () => ({ shareId: 'share', sessionId: 'source', sessionMode: 'view',
+      allowsFork: false, viewerAdmitted: true, stopped: false }),
+    readAsset: async (path) => {
+      asked.push(path)
+      return { status: 200, body: { contentType: 'application/octet-stream', base64: '' } }
+    },
+  })
+  return { read, asked }
+}
+
+describe('viewer page top-level files', () => {
+  it('answers the three exact top-level files the Relay forwards, with their query intact', async () => {
+    const { read, asked } = recordingService()
+    onTestFinished(() => { read.close() })
+
+    for (const path of ['manifest.webmanifest', 'favicon.svg', 'favicon-dark.svg', 'manifest.webmanifest?rev=3']) {
+      expect((await read.answer('share', { op: 'asset', path }, alice)).status).toBe(200)
+    }
+
+    expect(asked).toEqual(['manifest.webmanifest', 'favicon.svg', 'favicon-dark.svg', 'manifest.webmanifest?rev=3'])
+  })
+
+  it('keeps every other top-level name refused, including a sibling of an admitted one', async () => {
+    const { read, asked } = recordingService()
+    onTestFinished(() => { read.close() })
+
+    for (const path of [
+      'robots.txt', 'manifest.json', 'favicon.svg.map', 'favicon.svg/extra', 'assets', '/assets', 'plugins',
+    ]) {
+      expect(await read.answer('share', { op: 'asset', path }, alice))
+        .toEqual({ status: 404, body: { error: 'asset-not-found' } })
+    }
+
+    expect(asked).toEqual([])
+  })
+
+  it('serves the viewer document without its manifest link and leaves the static file alone', async () => {
+    const indexHtml = [
+      '<!doctype html>',
+      '<html lang="en">',
+      '  <head>',
+      '    <meta charset="utf-8" />',
+      '    <link rel="manifest" href="./manifest.webmanifest" />',
+      '    <title>owner</title>',
+      '  </head>',
+      '  <body></body>',
+      '</html>',
+      '',
+    ].join('\n')
+    const indexed = resourceReader(
+      () => new Response(indexHtml, { headers: { 'content-type': 'text/html; charset=utf-8' } }),
+    )
+    const ctx = ownerContext({ webServer: indexed })
+    const read = createViewerReadService({
+      connection: readerConnection,
+      sharedSessionId: () => 'source',
+      forkStateOf: () => ({ shareId: 'share', sessionId: 'source', sessionMode: 'view',
+        allowsFork: false, viewerAdmitted: true, stopped: false }),
+      readAsset: (path, peer) => readViewerAsset(ctx, path, peer),
+    })
+    onTestFinished(() => { read.close() })
+
+    const served = await read.answer('share', { op: 'asset', path: '' }, alice)
+    expect(served.status).toBe(200)
+    const html = decode(served.body)
+    expect(html).not.toContain('rel="manifest"')
+    // Exactly one line less, every other byte preserved.
+    expect(html).toBe(indexHtml.split('\n').filter(line => !line.includes('rel="manifest"')).join('\n'))
+    // The Owner's own page reads the same static file and keeps the link.
+    expect(decode((await readViewerAsset(ctx, '', readerPeer)).body)).toBe(indexHtml)
+  })
+
+  it('refuses every source map while the resources it belongs to stay served', async () => {
+    const { read, asked } = recordingService()
+    onTestFinished(() => { read.close() })
+
+    for (const path of ['assets/client.js', 'assets/index-abc.js', 'assets/client.css', 'plugins/??a,b/client.js']) {
+      expect((await read.answer('share', { op: 'asset', path }, alice)).status).toBe(200)
+    }
+    expect(asked).toEqual(['assets/client.js', 'assets/index-abc.js', 'assets/client.css', 'plugins/??a,b/client.js'])
+
+    for (const path of ['assets/client.js.map', 'assets/index-abc.js.map', 'assets/client.css.map',
+      'plugins/??a,b/client.js.map', 'assets/client.js.map?v=1']) {
+      expect(await read.answer('share', { op: 'asset', path }, alice))
+        .toEqual({ status: 404, body: { error: 'asset-not-found' } })
+    }
+    // No map reached the reader: the list is still exactly the four resources served above.
+    expect(asked).toEqual(['assets/client.js', 'assets/index-abc.js', 'assets/client.css', 'plugins/??a,b/client.js'])
+  })
+
+  it('refuses a source map an `asset` op forwards, in every path spelling', async () => {
+    // The Relay reads neither the request line nor the body of `/__share/rpc`, and it forwards both a
+    // page-resource read and a raw forwarded read as this same `asset` op, so this gate is the authority:
+    // a percent-encoded `.map` names the file the same readers resolve.
+    const { read, asked } = recordingService()
+    onTestFinished(() => { read.close() })
+
+    for (const path of ['assets/index-x.js.map', 'plugins/??a,b/x.js.map&rev=1',
+      'assets/index-x.js%2Emap', 'assets/index-x.js%2emap?v=1', 'plugins/??a,b/x.js%2Emap&rev=1']) {
+      expect(await read.answer('share', { op: 'asset', path }, alice))
+        .toEqual({ status: 404, body: { error: 'asset-not-found' } })
+    }
+
+    expect(asked).toEqual([])
+  })
+
+  it('serves an admitted top-level file with the resource\u2019s own content type', async () => {
+    const ctx = ownerContext({ webServer: resourceReader(distResource) })
+
+    expect(await readViewerAsset(ctx, 'manifest.webmanifest?rev=3', readerPeer))
+      .toMatchObject({ status: 200, body: { contentType: 'application/manifest+json' } })
+    expect(await readViewerAsset(ctx, 'favicon.svg', readerPeer))
+      .toMatchObject({ status: 200, body: { contentType: 'image/svg+xml' } })
+    expect(await readViewerAsset(ctx, 'favicon-dark.svg', readerPeer))
+      .toMatchObject({ status: 200, body: { contentType: 'image/svg+xml' } })
+    // The directory form stays refused, so admitting names is not a directory grant.
+    expect(await readViewerAsset(ctx, 'favicon.svg/extra', readerPeer))
+      .toEqual({ status: 404, body: { error: 'asset-not-found' } })
+  })
+})
+
+describe('viewer page resource diagnostics', () => {
+  /**
+   * One read service over a share whose every asset read answers the same nine bytes.
+   * @param debug - Viewer-debugging switch, omitted for the default.
+   * @returns The service; the caller closes it.
+   */
+  const service = (debug: boolean | undefined) => createViewerReadService({
+    connection: readerConnection,
+    sharedSessionId: () => 'source',
+    forkStateOf: () => ({ shareId: 'share', sessionId: 'source', sessionMode: 'view',
+      allowsFork: false, viewerAdmitted: true, stopped: false }),
+    ...(debug === undefined ? {} : { debug }),
+    readAsset: async () => ({
+      status: 200,
+      body: { contentType: 'text/javascript', base64: Buffer.from('export {}').toString('base64') },
+    }),
+  })
+
+  it('names each served resource with its byte count and duration while viewer debugging is on', async () => {
+    const lines: unknown[][] = []
+    const logged = vi.spyOn(console, 'log').mockImplementation((...args: unknown[]) => { lines.push(args) })
+    onTestFinished(() => { logged.mockRestore() })
+    const read = service(true)
+    onTestFinished(() => { read.close() })
+
+    expect((await read.answer('share', { op: 'asset', path: 'assets/a.js' }, alice)).status).toBe(200)
+
+    expect(lines).toHaveLength(1)
+    expect(String(lines[0]?.[0])).toMatch(/^\[liveshare\] viewer asset share=share path=assets\/a\.js bytes=9 ms=\d+$/)
+  })
+
+  it('stays silent while viewer debugging is off', async () => {
+    const logged = vi.spyOn(console, 'log').mockImplementation(() => {})
+    onTestFinished(() => { logged.mockRestore() })
+    const read = service(undefined)
+    onTestFinished(() => { read.close() })
+
+    expect((await read.answer('share', { op: 'asset', path: 'assets/a.js' }, alice)).status).toBe(200)
+
+    expect(logged).not.toHaveBeenCalled()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-authority-refresh.spec.ts b/packages/experimental/liveshare/tests/viewer-authority-refresh.spec.ts
new file mode 100644
index 0000000000..bf49e6fe62
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-authority-refresh.spec.ts
@@ -0,0 +1,206 @@
+/** A requests refresh reports its own authorization refusal while cancelling older revoked work. */
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import { createViewerReadService, type ViewerReadDeps } from '../src/host/viewer-read.ts'
+import { readerConnection } from './viewer-read-peers.ts'
+
+const alice = { providerId: 'mock', tenantId: 'tenant', subjectId: 'alice' }
+const bob = { ...alice, providerId: 'other' }
+const listCall = { op: 'call', path: '/api/session/list', body: {} } as const
+
+function harness(mode: 'view' | 'write' = 'view') {
+  const allowed = new Set([identityKeyOf(alice), identityKeyOf(bob)])
+  const requests: Request[] = []
+  const streams: AbortSignal[] = []
+  const pending: Promise<unknown>[] = []
+  const fetchEntered = Promise.withResolvers<undefined>()
+  const fetchReleased = Promise.withResolvers<undefined>()
+  let refresh: NonNullable<ViewerReadDeps['refreshAdmission']> = async () => {}
+  let holdFetch = false
+  const peers: PeerScope[] = []
+  const readers = readerConnection(async (request, peer) => {
+    requests.push(request)
+    peers.push(peer)
+    if (holdFetch) {
+      if (requests.length === 2) fetchEntered.resolve(undefined)
+      await fetchReleased.promise
+    }
+    request.signal.throwIfAborted()
+    return Response.json({ result: { ok: true, value: { items: [] } } })
+  })
+  const read = createViewerReadService({
+    sharedSessionId: () => 'source',
+    sourceConfined: () => true,
+    forkStateOf: () => ({ shareId: 'share', sessionId: 'source', sessionMode: mode,
+      allowsFork: mode === 'write', viewerAdmitted: true, stopped: false }),
+    viewerStillAdmitted: (_shareId, actor) => allowed.has(identityKeyOf(actor)),
+    refreshAdmission: (shareId, signal) => refresh(shareId, signal),
+    connection: readers.connection,
+    gateway: { wireStream: {
+      open: async (_endpoint, _payload, _uplink, _peer, signal) => {
+        streams.push(signal)
+        return (async function* () { yield { ready: true } })()
+      },
+      failure: () => ({ code: 'gateway/internal', message: 'failed', details: {} }),
+    } },
+  })
+  onTestFinished(async () => {
+    fetchReleased.resolve(undefined)
+    read.close()
+    await Promise.allSettled(pending)
+    await readers.dispose()
+  })
+  const track = <T>(promise: Promise<T>): Promise<T> => { pending.push(promise); return promise }
+  return {
+    read, requests, peers, streams, fetchEntered, fetchReleased, track,
+    holdFetch: () => { holdFetch = true },
+    refresh: (callback: NonNullable<ViewerReadDeps['refreshAdmission']>) => { refresh = callback },
+    revoke: (shareId = 'share') => {
+      allowed.delete(identityKeyOf(alice))
+      read.recheckAdmission(shareId)
+    },
+    readmit: () => { allowed.add(identityKeyOf(alice)) },
+    revokeOnRefresh: () => {
+      refresh = async (shareId, signal) => {
+        allowed.delete(identityKeyOf(alice))
+        read.recheckAdmission(shareId)
+        signal?.throwIfAborted()
+      }
+    },
+  }
+}
+
+const unauthorized = { status: 403, body: { error: 'viewer-not-authorized' } }
+const open = (id: number) => ({ op: 'stream-open' as const, id, endpoint: 'session/follow',
+  payload: { args: { request: { address: { kind: 'session', sessionId: 'source' } } } } })
+
+describe('viewer requests authority refresh', () => {
+  it('returns 403 when its first GET discovers unary revocation without aborting the caller', async () => {
+    const fixture = harness()
+    const caller = new AbortController()
+    fixture.revokeOnRefresh()
+    await expect(fixture.read.answer('share', listCall, alice, caller.signal)).resolves.toMatchObject(unauthorized)
+    expect(caller.signal.aborted).toBe(false)
+    expect(fixture.requests).toEqual([])
+    await expect(fixture.read.answer('share', listCall, bob)).resolves.toMatchObject({ status: 200 })
+  })
+
+  it('returns terminal 403 for a live poll whose first GET releases its revoked stream', async () => {
+    const fixture = harness()
+    const caller = new AbortController()
+    expect((await fixture.read.answer('share', open(1), alice)).status).toBe(200)
+    expect((await fixture.read.answer('share', open(2), bob)).status).toBe(200)
+    fixture.revokeOnRefresh()
+    await expect(fixture.read.answer('share', { op: 'stream-next', id: 1 }, alice, caller.signal))
+      .resolves.toMatchObject(unauthorized)
+    expect(caller.signal.aborted).toBe(false)
+    expect(fixture.streams[0]?.aborted).toBe(true)
+    expect(fixture.streams[1]?.aborted).toBe(false)
+    await expect(fixture.read.answer('share', { op: 'stream-next', id: 2 }, bob))
+      .resolves.toMatchObject({ status: 200, body: { values: [{ ready: true }] } })
+  })
+
+  it('still cancels other revoked unary work and streams while retaining the full Bob identity', async () => {
+    const fixture = harness()
+    expect((await fixture.read.answer('share', open(1), alice)).status).toBe(200)
+    expect((await fixture.read.answer('share', open(2), bob)).status).toBe(200)
+    fixture.holdFetch()
+    const oldAlice = fixture.track(fixture.read.answer('share', listCall, alice))
+    const cancelled = oldAlice.then(() => undefined, (error: unknown) => error)
+    const oldBob = fixture.track(fixture.read.answer('share', listCall, bob))
+    await fixture.fetchEntered.promise
+    fixture.revokeOnRefresh()
+    await expect(fixture.read.answer('share', listCall, alice)).resolves.toMatchObject(unauthorized)
+    expect(fixture.requests[0]?.signal.aborted).toBe(true)
+    expect(fixture.requests[1]?.signal.aborted).toBe(false)
+    expect(fixture.streams.map(signal => signal.aborted)).toEqual([true, false])
+    // The revoked reader's Peer ends with its work; Bob's calls keep speaking for Bob's own Peer.
+    await vi.waitFor(() => { expect(fixture.peers[0]?.signal.aborted).toBe(true) })
+    expect(fixture.peers[1]?.signal.aborted).toBe(false)
+    fixture.fetchReleased.resolve(undefined)
+    await expect(cancelled).resolves.toMatchObject({ message: 'Viewer access ended' })
+    await expect(oldBob).resolves.toMatchObject({ status: 200 })
+  })
+
+  it('speaks for a new Peer once a revoked reader is admitted again', async () => {
+    const fixture = harness()
+    expect((await fixture.read.answer('share', listCall, alice)).status).toBe(200)
+    const revoked = fixture.peers[0]
+    fixture.revoke()
+    await vi.waitFor(() => { expect(revoked?.signal.aborted).toBe(true) })
+    await expect(fixture.read.answer('share', listCall, alice)).resolves.toMatchObject(unauthorized)
+
+    fixture.readmit()
+    expect((await fixture.read.answer('share', listCall, alice)).status).toBe(200)
+    const admitted = fixture.peers[1]
+    expect(admitted).not.toBe(revoked)
+    expect(admitted?.principal).toEqual({ kind: 'share-viewer', shareId: 'share', actor: alice })
+    expect(admitted?.signal.aborted).toBe(false)
+  })
+
+  it('reports revocation discovered by the final write refresh before owner dispatch', async () => {
+    const fixture = harness('write')
+    let refreshes = 0
+    fixture.refresh(async (shareId, signal) => {
+      if (++refreshes === 2) fixture.revoke(shareId)
+      signal?.throwIfAborted()
+    })
+    const request = { op: 'call' as const, path: '/api/session/prompt',
+      body: { type: 'client-request', rpcId: 'prompt', method: 'session/prompt',
+        payload: { args: { request: { requestId: 'prompt', sessionId: 'source', mode: 'queue',
+          content: [{ type: 'text', text: 'input' }] } } } } }
+    await expect(fixture.read.answer('share', request, alice)).resolves.toMatchObject(unauthorized)
+    expect(fixture.requests).toEqual([])
+  })
+
+  it('retains missing-stream and unrelated cancellation outcomes instead of inventing revocation', async () => {
+    const fixture = harness()
+    expect((await fixture.read.answer('share', open(1), alice)).status).toBe(200)
+    fixture.refresh(async () => { fixture.read.closeViewerStreams('share', alice) })
+    await expect(fixture.read.answer('share', { op: 'stream-next', id: 1 }, alice))
+      .resolves.toMatchObject({ status: 404, body: { error: 'stream-not-found' } })
+    fixture.revokeOnRefresh()
+    await expect(fixture.read.answer('share', { op: 'stream-next', id: 99 }, alice))
+      .resolves.toMatchObject({ status: 404, body: { error: 'stream-not-found' } })
+  })
+
+  it('keeps a different actor from polling the captured live stream', async () => {
+    const fixture = harness()
+    expect((await fixture.read.answer('share', open(1), alice)).status).toBe(200)
+    fixture.revokeOnRefresh()
+    await expect(fixture.read.answer('share', { op: 'stream-next', id: 1 }, bob))
+      .resolves.toMatchObject({ status: 404, body: { error: 'stream-not-found' } })
+    expect(fixture.streams[0]?.aborted).toBe(true)
+  })
+
+  it.each(['close', 'cancel'] as const)('retains %s cancellation while unary admission is refreshing', async (operation) => {
+    const fixture = harness()
+    fixture.refresh(async () => {
+      if (operation === 'close') fixture.read.close()
+      else fixture.read.cancelPendingCalls('share')
+    })
+    await expect(fixture.read.answer('share', listCall, alice)).rejects.toThrow()
+    expect(fixture.requests).toEqual([])
+  })
+
+  it('propagates authority refresh failure instead of recasting it as a denial', async () => {
+    const fixture = harness()
+    const failure = new Error('requests snapshot unavailable')
+    fixture.refresh(async () => { throw failure })
+    await expect(fixture.read.answer('share', listCall, alice)).rejects.toBe(failure)
+    expect(fixture.requests).toEqual([])
+  })
+
+  it.each(['call', 'stream-next'] as const)('keeps caller cancellation during %s refresh distinct from revocation', async (op) => {
+    const fixture = harness()
+    if (op === 'stream-next') expect((await fixture.read.answer('share', open(1), alice)).status).toBe(200)
+    const caller = new AbortController()
+    const reason = new Error('caller went away')
+    fixture.refresh(async () => { caller.abort(reason) })
+    const request = op === 'call' ? listCall : { op, id: 1 }
+    await expect(fixture.read.answer('share', request, alice, caller.signal)).rejects.toBe(reason)
+    expect(fixture.requests).toEqual([])
+    if (op === 'stream-next') expect(fixture.streams[0]?.aborted).toBe(true)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-authority.spec.ts b/packages/experimental/liveshare/tests/viewer-authority.spec.ts
new file mode 100644
index 0000000000..cf9451af0f
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-authority.spec.ts
@@ -0,0 +1,83 @@
+/** Viewer streams retain Session and actor authority throughout their lifetime. */
+import { mkdtempSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished } from 'vitest'
+import { forkLineageValue } from '../src/fork-lineage.ts'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import { createViewerReadService, type ViewerReadDeps, type ViewerReadGateway } from '../src/host/viewer-read.ts'
+import { readerConnection } from './viewer-read-peers.ts'
+
+const alice = { providerId: 'mock', tenantId: 'tenant', subjectId: 'alice' }
+const bob = { ...alice, subjectId: 'bob' }
+
+function gateway(frames: readonly unknown[]): ViewerReadGateway {
+  return {
+    wireStream: {
+      open: async () => (async function* () { yield* frames })(),
+      failure: () => ({ code: 'gateway/internal', message: 'failed', details: {} }),
+    },
+  }
+}
+
+/** One reader over the given gateway, closed when the test ends. */
+function reader(deps: Omit<ViewerReadDeps, 'connection'>) {
+  const readers = readerConnection()
+  const read = createViewerReadService({ ...deps, connection: readers.connection })
+  onTestFinished(async () => {
+    read.close()
+    await readers.dispose()
+  })
+  return read
+}
+
+async function collect(read: ReturnType<typeof createViewerReadService>, endpoint: string, actor = alice) {
+  expect(await read.answer('share', { op: 'stream-open', id: 1, endpoint, payload: { args: {} } }, actor))
+    .toMatchObject({ status: 200 })
+  const frames: unknown[] = []
+  for (;;) {
+    const answer = await read.answer('share', { op: 'stream-next', id: 1 }, actor)
+    expect(answer.status).toBe(200)
+    const body = answer.body as { values?: unknown[]; end?: boolean }
+    if (body.end) return frames
+    frames.push(...body.values ?? [])
+  }
+}
+
+describe('viewer authority', () => {
+  it('does not let another actor poll, replace, or cancel a stream', async () => {
+    const read = reader({ sharedSessionId: () => 'source', gateway: gateway([{ private: 'alice' }]) })
+    const open = { op: 'stream-open' as const, id: 1, endpoint: 'session/follow',
+      payload: { args: { request: { address: { kind: 'session', sessionId: 'source' } } } } }
+    expect((await read.answer('share', open, alice)).status).toBe(200)
+    expect((await read.answer('share', { op: 'stream-next', id: 1 }, bob)).status).toBe(403)
+    expect((await read.answer('share', { op: 'stream-cancel', id: 1 }, bob)).status).toBe(403)
+    expect((await read.answer('share', open, bob)).status).toBe(403)
+    expect(await read.answer('share', { op: 'stream-next', id: 1 }, alice))
+      .toMatchObject({ status: 200, body: { values: [{ private: 'alice' }] } })
+  })
+
+  it('adds branch facts to the reader\u2019s own fork in the control frames the controller sent', async () => {
+    const files = mkdtempSync(join(tmpdir(), 'liveshare-authority-'))
+    onTestFinished(() => { rmSync(files, { recursive: true, force: true }) })
+    const forks = new ForkRegistry(join(files, 'forks.json'))
+    await forks.record({
+      childSessionId: 'alice-fork', shareId: 'share', sourceSessionId: 'source', boundary: 1,
+      creator: alice, createdAt: '2026-09-11T00:00:00.000Z',
+    })
+    const block = { asOfSeq: 0, values: {} }
+    const read = reader({ sharedSessionId: () => 'source', forks, gateway: gateway([
+      { type: 'baseline', value: { projections: { source: block, 'alice-fork': { asOfSeq: 1, values: { title: 'Mine' } } } } },
+      { type: 'projection', sessionId: 'alice-fork', key: 'title', value: 'Renamed', seq: 2 },
+    ]) })
+    // The fork's facts are not folded from its log, so the baseline that replaces the block the session
+    // list published states them again; the shared Session and later updates are relayed unchanged.
+    expect(await collect(read, 'session/control')).toEqual([
+      { type: 'baseline', value: { projections: {
+        source: block,
+        'alice-fork': { asOfSeq: 1, values: { title: 'Mine', forkLineage: forkLineageValue('source') } },
+      } } },
+      { type: 'projection', sessionId: 'alice-fork', key: 'title', value: 'Renamed', seq: 2 },
+    ])
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-brand-registration.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-brand-registration.client.spec.tsx
new file mode 100644
index 0000000000..2cee003e56
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-brand-registration.client.spec.tsx
@@ -0,0 +1,116 @@
+// @vitest-environment jsdom
+/**
+ * The viewer's brand seats shadow the shipped brand instead of colliding with it.
+ *
+ * `sidebar.brand.mark` and `sidebar.brand.name` are single slots. A served viewer page mounts the
+ * owner's own plugins, so the shipped brand — including `ui-brand-official` on an official build —
+ * already occupies both slots at the default rank. Registering the viewer entries at that rank is
+ * the failure this suite pins: the single-slot conflict leaves the viewer entry unregistered and the
+ * shipped brand keeps rendering.
+ */
+
+import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { afterEach, describe, expect, it, onTestFinished } from 'vitest'
+import { cleanup } from '@testing-library/react'
+import { en, NS, zh } from '../src/client/locales.ts'
+import * as viewerBrand from '../src/client/viewer-brand.tsx'
+import { VIEWER_BRAND_PRIORITY } from '../src/client/viewer-brand.tsx'
+
+afterEach(cleanup)
+
+/** Watch the slot ledger's entry errors while the viewer brand mounts. */
+function watchEntryErrors(runtime: SlotTestRuntime) {
+  const entryErrors: { key: string; message: string }[] = []
+  const stop = runtime.slots.onEntryError((key, _registration, error) => {
+    entryErrors.push({ key, message: error instanceof Error ? error.message : String(error) })
+  })
+  return { entryErrors, stop }
+}
+
+/**
+ * A runtime whose declared brand slots the shipped plugins can fill at their default rank.
+ * @returns The runtime and the shipped-brand mount.
+ */
+async function bench() {
+  const runtime = await SlotTestRuntime.create()
+  onTestFinished(() => runtime.dispose())
+  const locale = new LocaleRuntime(runtime.ctx)
+  locale.register(NS, { en, zh })
+  locale.setLocale('zh')
+  runtime.ctx.provide('locale', locale)
+  runtime.slots.installLocale(locale)
+  await runtime.declare({
+    'sidebar.brand.mark': { kind: 'single', scope: 'root' },
+    'sidebar.brand.name': { kind: 'single', scope: 'root' },
+  })
+  // The shipped brand registers one entry per slot at the default rank, exactly as its plugin does.
+  const mountShipped = async (): Promise<void> => {
+    await runtime.mount({
+      inject: ['slots'],
+      apply(ctx: ClientContext) {
+        ctx.slots.register({ name: 'sidebar.brand.mark' }, () => <span data-shipped="brand-mark">shipped mark</span>)
+        ctx.slots.register({ name: 'sidebar.brand.name' }, () => <span data-shipped="brand-name">shipped name</span>)
+      },
+    })
+  }
+  return { runtime, mountShipped }
+}
+
+/** Both brand seats' ranks as the ledger holds them, defaulted the way the registry ranks a missing option. */
+function brandRanks(runtime: SlotTestRuntime): { mark: number[]; name: number[] } {
+  return {
+    mark: runtime.slots.entries('sidebar.brand.mark').map(entry => entry.options.priority ?? 0),
+    name: runtime.slots.entries('sidebar.brand.name').map(entry => entry.options.priority ?? 0),
+  }
+}
+
+describe('viewer brand registration', () => {
+  it('mounts the viewer brand over the shipped brand and renders the viewer entries', async () => {
+    const { runtime, mountShipped } = await bench()
+    const { entryErrors, stop } = watchEntryErrors(runtime)
+    await mountShipped()
+    const handle = await runtime.mount(viewerBrand)
+    expect(entryErrors).toEqual([])
+
+    const mark = runtime.renderSlot('sidebar.brand.mark', { size: 24 })
+    const name = runtime.renderSlot('sidebar.brand.name', {})
+    expect(mark.container.querySelector('[data-shipped="brand-mark"]')).toBeNull()
+    expect(mark.container.querySelector('svg')).not.toBeNull()
+    expect(name.container.querySelector('[data-shipped="brand-name"]')).toBeNull()
+    expect(name.container.textContent).toContain(zh['viewer.brand'])
+
+    // Both entries stay on the ledger: the viewer entry is the lower rank, the shipped entry is shadowed.
+    expect(brandRanks(runtime)).toEqual({
+      mark: [VIEWER_BRAND_PRIORITY, 0],
+      name: [VIEWER_BRAND_PRIORITY, 0],
+    })
+
+    // A viewer unload restores the shipped brand: the shadow was a registration, not a removal.
+    await handle.dispose()
+    expect(await mark.view.findByText('shipped mark')).toBeTruthy()
+    expect(await name.view.findByText('shipped name')).toBeTruthy()
+    stop()
+  })
+
+  it('keeps the viewer entries when the viewer page mounts them before the shipped brand', async () => {
+    const { runtime, mountShipped } = await bench()
+    const { entryErrors, stop } = watchEntryErrors(runtime)
+    await runtime.mount(viewerBrand)
+    await mountShipped()
+    expect(entryErrors).toEqual([])
+    expect(brandRanks(runtime)).toEqual({
+      mark: [VIEWER_BRAND_PRIORITY, 0],
+      name: [VIEWER_BRAND_PRIORITY, 0],
+    })
+    const mark = runtime.renderSlot('sidebar.brand.mark', { size: 24 })
+    expect(mark.container.querySelector('[data-shipped="brand-mark"]')).toBeNull()
+    expect(mark.container.querySelector('svg')).not.toBeNull()
+    stop()
+  })
+
+  it('states the shadow rank the shipped brand is replaced from', () => {
+    expect(VIEWER_BRAND_PRIORITY).toBeLessThan(0)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-brand.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-brand.client.spec.tsx
new file mode 100644
index 0000000000..867d43bd56
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-brand.client.spec.tsx
@@ -0,0 +1,107 @@
+// @vitest-environment jsdom
+/** The viewer's brand row: what the sidebar's brand seats say about a share, and where they lead. */
+
+import { Context } from '@deepseek-ai/cordis'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { act, cleanup, render, screen } from '@testing-library/react'
+import { afterEach, describe, expect, it } from 'vitest'
+import { ViewerBrandMark, ViewerBrandName } from '../src/client/viewer-brand.tsx'
+import { viewerContextFacts, type ViewerContextFacts } from '../src/client/viewer-context.ts'
+import { en, NS, zh } from '../src/client/locales.ts'
+
+interface ViewerTargetWindow {
+  __DSH_LIVESHARE_VIEWER__?: { shareId: string; sessionId: string; basePath: string }
+}
+
+// The brand row reads its copy through the locale seat the served page's client tree provides.
+const locale = new LocaleRuntime(new Context())
+locale.register(NS, { zh, en })
+locale.setLocale('zh')
+const t = locale.bind(NS)
+
+afterEach(() => {
+  cleanup()
+  viewerContextFacts.set({})
+  delete (globalThis as ViewerTargetWindow).__DSH_LIVESHARE_VIEWER__
+})
+
+/** Publish the facts the page's own read put in the store. */
+function publish(facts: ViewerContextFacts): void {
+  act(() => { viewerContextFacts.set(facts) })
+}
+
+/** Point the page at one share under a public base path. */
+function target(basePath = '/team/liveshare'): void {
+  ;(globalThis as ViewerTargetWindow).__DSH_LIVESHARE_VIEWER__ = {
+    shareId: 'e8HUU7dYsW7Y',
+    sessionId: 'fx-alpha',
+    basePath,
+  }
+}
+
+describe('viewer brand row', () => {
+  it('links home and states the owner and the owner DSH version', async () => {
+    target()
+    publish({ owner: '许翰翔', dshVersion: '0.1.5-rc.2', relay: '20260911-143800-6a72b8' })
+    render(<ViewerBrandName t={t} />)
+    const link = screen.getByRole('link', { name: '回到 LiveShare 首页' })
+    expect(link.getAttribute('href')).toBe('/team/liveshare/')
+    expect(link.textContent).toContain('由 许翰翔 分享')
+    expect(link.textContent).toContain('LiveShare')
+    expect(link.textContent).toContain('DSH 0.1.5-rc.2')
+    // The Relay's own release stays a detail of the same link instead of widening the row.
+    expect(link.getAttribute('title')).toBe('由 许翰翔 分享 · DSH 0.1.5-rc.2 · relay 20260911-143800-6a72b8')
+    expect(link.textContent).not.toContain('20260911-143800-6a72b8')
+  })
+
+  it('states no owner version when the share reported none, and never invents an owner', () => {
+    target('')
+    publish({})
+    render(<ViewerBrandName t={t} />)
+    const link = screen.getByRole('link', { name: '回到 LiveShare 首页' })
+    expect(link.getAttribute('href')).toBe('/')
+    expect(link.textContent).toContain('由 未知分享者 分享')
+    expect(link.textContent).not.toContain('DSH')
+    expect(link.getAttribute('title')).toBe('由 未知分享者 分享')
+  })
+
+  it('labels a share whose verified owner has no display name from the identity itself', () => {
+    target()
+    publish({ ownerSubjectId: 'feishu:tenant:ou_9f2c4d', dshVersion: '0.1.5-rc.2' })
+    render(<ViewerBrandName t={t} />)
+    const link = screen.getByRole('link', { name: '回到 LiveShare 首页' })
+    expect(link.textContent).toContain('由 主体 …ou_9f2c4d 分享')
+    // The signed-in viewer's own name is never pasted onto the share's owner.
+    expect(link.textContent).not.toContain('未知分享者')
+  })
+
+  it('states facts that arrive after the seat rendered', () => {
+    target()
+    render(<ViewerBrandName t={t} />)
+    expect(screen.getByRole('link', { name: '回到 LiveShare 首页' }).textContent)
+      .toContain('由 未知分享者 分享')
+    publish({ owner: '许翰翔', dshVersion: '0.1.5-rc.2' })
+    const link = screen.getByRole('link', { name: '回到 LiveShare 首页' })
+    expect(link.textContent).toContain('由 许翰翔 分享')
+    expect(link.textContent).toContain('DSH 0.1.5-rc.2')
+  })
+
+  it('keeps the owner release inline and its build metadata on the tooltip', () => {
+    target()
+    publish({ owner: '许翰翔', dshVersion: '0.1.5-rc.2+9f2c4d1' })
+    render(<ViewerBrandName t={t} />)
+    const link = screen.getByRole('link', { name: '回到 LiveShare 首页' })
+
+    expect(link.textContent).toContain('DSH 0.1.5-rc.2')
+    expect(link.textContent).not.toContain('9f2c4d1')
+    // The whole identifier one click away, so a build never widens the row.
+    expect(link.getAttribute('title')).toContain('DSH 0.1.5-rc.2+9f2c4d1')
+  })
+
+  it('renders the shipped Harness mark at the size the shell asks for', () => {
+    const { container } = render(<ViewerBrandMark size={24} />)
+    const mark = container.querySelector('svg')
+    expect(mark).not.toBeNull()
+    expect(mark?.getAttribute('width')).toBe('24')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-call-lifetime.spec.ts b/packages/experimental/liveshare/tests/viewer-call-lifetime.spec.ts
new file mode 100644
index 0000000000..dba4a791b7
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-call-lifetime.spec.ts
@@ -0,0 +1,110 @@
+/** Pending Session calls lose their lifetime when the share or opening viewer is revoked. */
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+import { readerConnection } from './viewer-read-peers.ts'
+
+const alice = { providerId: 'mock', tenantId: 'tenant', subjectId: 'alice' }
+const bob = { ...alice, providerId: 'other' }
+
+/**
+ * One write share whose source calls hold at their last pending step until released.
+ *
+ * A prompt holds inside the owner's dispatch. A source cancel is dispatched the same way, so it holds at
+ * the admission refresh that precedes the dispatch.
+ */
+function harness() {
+  const opened = Promise.withResolvers<undefined>()
+  const release = Promise.withResolvers<undefined>()
+  const committed: string[] = []
+  const peers: PeerScope[] = []
+  let holdRefresh = false
+  const readers = readerConnection(async (request, peer) => {
+    peers.push(peer)
+    opened.resolve(undefined)
+    await release.promise
+    request.signal.throwIfAborted()
+    committed.push(new URL(request.url).pathname)
+    return Response.json({ result: { ok: true, value: { accepted: true } } })
+  })
+  const read = createViewerReadService({
+    sharedSessionId: () => 'source',
+    viewerStillAdmitted: () => true,
+    forkStateOf: () => ({ shareId: 'share', sessionId: 'source', sessionMode: 'write',
+      allowsFork: true, viewerAdmitted: true, stopped: false }),
+    connection: readers.connection,
+    refreshAdmission: async () => {
+      if (!holdRefresh) return
+      opened.resolve(undefined)
+      await release.promise
+    },
+  })
+  onTestFinished(async () => {
+    release.resolve(undefined)
+    read.close()
+    await readers.dispose()
+  })
+  const call = (endpoint: 'prompt' | 'cancel', actor = alice) => {
+    holdRefresh = endpoint === 'cancel'
+    return read.answer('share', {
+      op: 'call', path: `/api/session/${endpoint}`,
+      body: { type: 'client-request', rpcId: 'rpc', method: `session/${endpoint}`,
+        payload: { args: { request: { requestId: 'request', sessionId: 'source', mode: 'queue',
+          content: [{ type: 'text', text: 'input' }] } } } },
+    }, actor)
+  }
+  return { read, call, opened, release, committed, peers }
+}
+
+describe('viewer call lifetime', () => {
+  it.each(['prompt', 'cancel'] as const)('cancels a pending %s when its viewer is revoked', async (endpoint) => {
+    const fixture = harness()
+    const answer = fixture.call(endpoint)
+    const rejected = expect(answer).rejects.toThrow()
+    await fixture.opened.promise
+    fixture.read.closeViewerStreams('share', alice)
+    fixture.release.resolve(undefined)
+    await rejected
+    expect(fixture.committed).toEqual([])
+  })
+
+  it.each(['share', 'host', 'mode'] as const)('cancels a pending prompt when the %s closes', async (scope) => {
+    const fixture = harness()
+    const rejected = expect(fixture.call('prompt')).rejects.toThrow()
+    await fixture.opened.promise
+    if (scope === 'share') fixture.read.closeShare('share')
+    else if (scope === 'mode') fixture.read.cancelPendingCalls('share')
+    else fixture.read.close()
+    fixture.release.resolve(undefined)
+    await rejected
+    expect(fixture.committed).toEqual([])
+  })
+
+  it.each(['viewer', 'share'] as const)('ends the revoked reader\u2019s Peer when the %s closes', async (scope) => {
+    const fixture = harness()
+    const rejected = expect(fixture.call('prompt')).rejects.toThrow()
+    await fixture.opened.promise
+    const peer = fixture.peers[0]
+    expect(peer?.principal).toEqual({ kind: 'share-viewer', shareId: 'share', actor: alice })
+    if (scope === 'viewer') fixture.read.closeViewerStreams('share', alice)
+    else fixture.read.closeShare('share')
+    // The Peer the pending call spoke for ends with the grant, so the Gateway refuses whatever it still carries.
+    await vi.waitFor(() => { expect(peer?.signal.aborted).toBe(true) })
+    fixture.release.resolve(undefined)
+    await rejected
+    expect(fixture.committed).toEqual([])
+  })
+
+  it('leaves a call from another complete actor identity running', async () => {
+    const fixture = harness()
+    const answer = fixture.call('prompt', bob)
+    await fixture.opened.promise
+    fixture.read.closeViewerStreams('share', alice)
+    fixture.release.resolve(undefined)
+    expect((await answer).status).toBe(200)
+    expect(fixture.committed).toEqual(['/api/session/prompt'])
+    // Bob's Peer is not Alice's, so ending Alice's left the one Bob's call spoke for live.
+    expect(fixture.peers[0]?.principal).toEqual({ kind: 'share-viewer', shareId: 'share', actor: bob })
+    expect(fixture.peers[0]?.signal.aborted).toBe(false)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-cancel-admission.spec.ts b/packages/experimental/liveshare/tests/viewer-cancel-admission.spec.ts
new file mode 100644
index 0000000000..46acdce377
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-cancel-admission.spec.ts
@@ -0,0 +1,378 @@
+/**
+ * A reader's cancel travels the standard Gateway dispatch.
+ *
+ * A cancel naming the share's own Session and one naming the reader's own fork are both dispatched through
+ * the real Connection and Gateway as the reader's Peer, so the `share-viewer` policy decides the call and
+ * the Session controller stops whatever turn the target Session runs. A reader whose access ends while the
+ * call is decoded or prepared cancels nothing, and one whose grant ended is refused before dispatch.
+ */
+
+import { Context } from '@deepseek-ai/cordis'
+import { createUserMessage } from '@deepseek-ai/dsh-llm'
+import { SessionId } from '@deepseek-ai/dsh-session'
+import {
+  mountAgentLoopTestDependencies,
+  mountAgentLoopTestHarness,
+} from '@deepseek-ai/dsh-agent-loop-testkit'
+import { TypertGatewayService } from '@deepseek-ai/dsh-api-gateway'
+import RemoteAccessService from '@deepseek-ai/dsh-api-remote-access'
+import { TypertRegistry } from '@deepseek-ai/dsh-typert-registry'
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { identityKeyOf } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { mkdtempSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { HostConnectionService } from '../../../client/connection/src/rpc-host.ts'
+import { BrowserAuth } from '../../../client/connection/src/browser-auth.ts'
+import { provideBrowserCredentials } from '../../../api/gateway/tests/browser-credentials.ts'
+import { createSessionTestController } from '../../../api/session-controller/tests/test-remote.ts'
+import { SessionController, type SessionCancelRequest } from '../../../api/session-controller/src/index.ts'
+import type { TypertLookup } from '../../../typert/protocol/src/types.ts'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import type { ForkShareState } from '../src/host/fork-policy.ts'
+import { createViewerAccessPolicy, readerWriteRefusal, type ViewerAccessFacts } from '../src/host/viewer-access-policy.ts'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+import type { ViewerCallRequest } from '../src/viewer-channel.ts'
+
+declare module '@deepseek-ai/dsh-typert-protocol' {
+  interface TypertLookupMap {
+    /** Test-only lookup holding a cancel request in the Gateway's preparation, after access was checked. */
+    viewerCancelAdmissionRequest: TypertLookup<SessionCancelRequest, SessionCancelRequest>
+  }
+}
+
+const alice = { providerId: 'provider-a', tenantId: 'tenant', subjectId: 'viewer' }
+const bob = { ...alice, providerId: 'provider-b' }
+const sourceSession = SessionId('source-session')
+
+/** One `session/cancel` as the viewer client sends it. */
+function cancelRequest(sessionId: string): ViewerCallRequest {
+  return {
+    op: 'call',
+    path: '/api/session/cancel',
+    body: {
+      type: 'client-request', rpcId: 'cancel-rpc', method: 'session/cancel',
+      payload: { args: { request: { sessionId } } },
+    },
+  }
+}
+
+class DecodingBarrierRequest extends Request {
+  readonly entered = Promise.withResolvers<undefined>()
+  readonly release = Promise.withResolvers<undefined>()
+
+  override async json(): Promise<unknown> {
+    this.entered.resolve(undefined)
+    await this.release.promise
+    return super.json()
+  }
+}
+
+/**
+ * A running turn on the reader's fork or on the share's own Session, a reader dispatching through the real
+ * Connection and Gateway, and this package's `share-viewer` policy registered with the Gateway's remote
+ * access service.
+ * @param creator - Reader the request is dispatched as.
+ * @param target - `fork` drives a recorded child of this reader; `source` drives the shared Session itself.
+ */
+async function readerHarness(creator: ShareRpcActor, target: 'fork' | 'source' = 'fork') {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-cancel-'))
+  onTestFinished(() => { rmSync(directory, { recursive: true, force: true }) })
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  await ctx.plugin(TypertRegistry)
+  await mountAgentLoopTestDependencies(ctx)
+  const driver = await mountAgentLoopTestHarness(ctx)
+  provideBrowserCredentials(ctx)
+  const auth = await BrowserAuth.create(ctx, ctx.credentials, 1)
+  new HostConnectionService(ctx, [], auth)
+  // Provided on the root Context that also constructs the Session controller below, which re-reads
+  // access from that Context's own fiber while a Gateway call runs.
+  new RemoteAccessService(ctx)
+  await ctx.plugin(TypertGatewayService)
+  const controller = await createSessionTestController(ctx, {
+    cwd: process.cwd(),
+    defaultModelSelection: () => ({ provider: 'unused', model: 'unused' }),
+  })
+  expect(Reflect.get(controller, 'cancel')).toBe(Reflect.get(SessionController.prototype, 'cancel'))
+
+  const sessionId = target === 'fork' ? SessionId('child-session') : sourceSession
+  const forks = new ForkRegistry(join(directory, 'forks.json'))
+  if (target === 'fork') {
+    await forks.record({ shareId: 'share', sourceSessionId: sourceSession, childSessionId: sessionId,
+      creator, boundary: 0, createdAt: '2026-10-12T00:00:00Z' })
+  }
+  // A turn reaches the `agent/pre-step` waterfall only after the loop resolves a model route, so the
+  // fixture gives the harness agent one; the pre-step listener below still spends no model call.
+  const agent = await driver.create(sessionId, { provider: 'unused', model: 'unused' })
+  const turnEntered = Promise.withResolvers<AbortSignal>()
+  const turnRelease = Promise.withResolvers<undefined>()
+  agent.ctx.on('agent/pre-step', async ({ signal }, next) => {
+    turnEntered.resolve(signal)
+    await turnRelease.promise
+    const decision = await next()
+    return decision.kind === 'enter' ? { ...decision, messages: [] } : decision
+  })
+  const cancelled = vi.spyOn(agent, 'cancel')
+  onTestFinished(async () => {
+    turnRelease.resolve(undefined)
+    await agent.whenIdle()
+    cancelled.mockRestore()
+  })
+  agent.followup(createUserMessage({
+    content: [{ type: 'text', text: 'Reader turn' }],
+    source: { kind: 'user' },
+  }))
+  const turnSignal = await turnEntered.promise
+  expect(agent.status).toBe('running')
+
+  const admitted = new Set([identityKeyOf(alice), identityKeyOf(bob)])
+  const share: ForkShareState = { shareId: 'share', sessionId: sourceSession, sessionMode: 'view',
+    allowsFork: true, viewerAdmitted: true, stopped: false }
+  const accessFacts: ViewerAccessFacts = {
+    share: shareId => shareId === 'share' ? share : undefined,
+    viewerAdmitted: (_shareId, actor) => admitted.has(identityKeyOf(actor)),
+    sourceConfined: () => true,
+    forks,
+    workspaces: () => [],
+    declaredCapabilities: () => [],
+  }
+  ctx.remoteAccess.registerPolicy('share-viewer', createViewerAccessPolicy(accessFacts))
+
+  let decoding = Promise.withResolvers<DecodingBarrierRequest>()
+  const preparing = Promise.withResolvers<undefined>()
+  const prepareRelease = Promise.withResolvers<undefined>()
+  /** Resolve the cancel's `request` parameter through a lookup that waits, as a cold resolution would. */
+  const delayPreparation = () => ctx.typert.lookups.register('viewerCancelAdmissionRequest', {
+    parameter: 'request', wire: 'request',
+    hostTypeSymbol: 'viewer-cancel-admission#SessionCancelRequest',
+    wireTypeSymbol: 'viewer-cancel-admission#SessionCancelRequest',
+    resolve: async (request) => {
+      preparing.resolve(undefined)
+      await prepareRelease.promise
+      return request
+    },
+  })
+  const wireResponse = Promise.withResolvers<unknown>()
+  const requests: DecodingBarrierRequest[] = []
+  const pending: Promise<unknown>[] = []
+  const peers: PeerScope[] = []
+  const dispatchedAs: PeerScope[] = []
+  const read = createViewerReadService({
+    connection: {
+      createSharedFetchHandler: (channel) => {
+        const shared = ctx.connection.createSharedFetchHandler('/api')
+        expect(channel).toBe('/api')
+        return {
+          requestBodyMode: request => shared.requestBodyMode(request),
+          fetch: async (request, peer) => {
+            const blocked = new DecodingBarrierRequest(request)
+            requests.push(blocked)
+            dispatchedAs.push(peer)
+            decoding.resolve(blocked)
+            const response = await shared.fetch(blocked, peer)
+            wireResponse.resolve(await response.clone().json())
+            return response
+          },
+        }
+      },
+      createPeer: (options) => {
+        const peer = ctx.connection.createPeer(options)
+        peers.push(peer)
+        return peer
+      },
+    },
+    sharedSessionId: () => sourceSession,
+    forkStateOf: () => share,
+    viewerStillAdmitted: (_shareId, actor) => admitted.has(identityKeyOf(actor)),
+    forks,
+    writeRefusal: (viewer, action, sessionId, concrete) => readerWriteRefusal(accessFacts, viewer, action, sessionId, concrete),
+  })
+  onTestFinished(async () => {
+    read.close()
+    prepareRelease.resolve(undefined)
+    for (const request of requests) request.release.resolve(undefined)
+    await Promise.allSettled(pending)
+  })
+
+  const call = (actor: ShareRpcActor) => {
+    decoding = Promise.withResolvers<DecodingBarrierRequest>()
+    const answer = read.answer('share', cancelRequest(sessionId), actor)
+    pending.push(answer)
+    return answer
+  }
+  /** End one reader's grant without touching the calls it already opened. */
+  const endGrant = (actor: ShareRpcActor): void => {
+    admitted.delete(identityKeyOf(actor))
+  }
+  /** End one reader's access the way the owner's revoke path does: the grant, then its calls and Peer. */
+  const revoke = (actor: ShareRpcActor): void => {
+    endGrant(actor)
+    read.closeViewerStreams('share', actor)
+  }
+  return {
+    ctx, agent, call, endGrant, revoke, get decoding() { return decoding }, wireResponse, peers, dispatchedAs,
+    preparing, prepareRelease, delayPreparation, turnSignal, turnRelease, cancelled,
+  }
+}
+
+describe('reader cancel of its own fork through Connection and Gateway', () => {
+  it('does not stop the fork’s turn when its reader is revoked during JSON decoding', async () => {
+    const fixture = await readerHarness(alice)
+    const answer = fixture.call(alice)
+    const rejected = expect(answer).rejects.toThrow('Viewer access ended')
+    const request = await fixture.decoding.promise
+    await request.entered.promise
+    expect(request.signal.aborted).toBe(false)
+    // The cancel is dispatched, as the reader's own Peer.
+    expect(fixture.dispatchedAs).toEqual([fixture.peers[0]])
+    expect(fixture.peers[0]?.principal).toEqual({ kind: 'share-viewer', shareId: 'share', actor: alice })
+
+    fixture.revoke(alice)
+    expect(request.signal.aborted).toBe(true)
+    request.release.resolve(undefined)
+    await rejected
+    expect(await fixture.wireResponse.promise).toMatchObject({
+      rpcId: 'cancel-rpc', result: { ok: false, error: { code: 'gateway/peer-disposed' } },
+    })
+    expect(fixture.peers[0]?.signal.aborted).toBe(true)
+
+    expect(fixture.cancelled).not.toHaveBeenCalled()
+    expect(fixture.turnSignal.aborted).toBe(false)
+    expect(fixture.agent.status).toBe('running')
+    // The revoked reader's next cancel is refused before anything is dispatched.
+    expect(await fixture.call(alice)).toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+    expect(fixture.dispatchedAs).toHaveLength(1)
+    fixture.turnRelease.resolve(undefined)
+    await fixture.agent.whenIdle()
+    expect(fixture.agent.session.snapshotEvents().findLast(event => event.type === 'turn/end'))
+      .toMatchObject({ data: { reason: { kind: 'completed' } } })
+  })
+
+  it('stops the fork’s turn when its reader is revoked during Gateway preparation', async () => {
+    // Known limitation: with the controller's access recheck deferred, a cancel already admitted by the
+    // Gateway keeps its effect even though the reader's access ends while the Gateway prepares it.
+    const fixture = await readerHarness(alice)
+    const unregister = fixture.delayPreparation()
+    onTestFinished(unregister)
+    const answer = fixture.call(alice)
+    const rejected = expect(answer).rejects.toThrow('Viewer access ended')
+    const request = await fixture.decoding.promise
+    await request.entered.promise
+    request.release.resolve(undefined)
+    // The Gateway has authorized the call and is resolving its arguments.
+    await fixture.preparing.promise
+
+    fixture.revoke(alice)
+    expect(request.signal.aborted).toBe(true)
+    fixture.prepareRelease.resolve(undefined)
+    await rejected
+    // The admitted cancel still reaches the controller, which no longer re-reads the revoked grant.
+    expect(await fixture.wireResponse.promise).toMatchObject({
+      rpcId: 'cancel-rpc', result: { ok: true, value: { accepted: true } },
+    })
+    expect(fixture.cancelled).toHaveBeenCalledExactlyOnceWith({ kind: 'user' }, { keepInbox: true })
+    expect(fixture.turnSignal.aborted).toBe(true)
+    fixture.turnRelease.resolve(undefined)
+    await fixture.agent.whenIdle()
+    expect(fixture.agent.session.snapshotEvents().findLast(event => event.type === 'turn/end'))
+      .toMatchObject({ data: { reason: { kind: 'aborted', reason: { kind: 'user' } } } })
+  })
+
+  it('still cancels when the reader’s grant ends during Gateway preparation', async () => {
+    // Known limitation: ending the grant does not abort the calls the reader already opened, so an
+    // in-flight cancel keeps its effect while no access recheck happens in the controller.
+    const fixture = await readerHarness(alice)
+    const unregister = fixture.delayPreparation()
+    onTestFinished(unregister)
+    const answer = fixture.call(alice)
+    const request = await fixture.decoding.promise
+    await request.entered.promise
+    request.release.resolve(undefined)
+    await fixture.preparing.promise
+
+    fixture.endGrant(alice)
+    expect(request.signal.aborted).toBe(false)
+    fixture.prepareRelease.resolve(undefined)
+    await answer
+    expect(await fixture.wireResponse.promise).toMatchObject({
+      rpcId: 'cancel-rpc', result: { ok: true, value: { accepted: true } },
+    })
+    expect(fixture.cancelled).toHaveBeenCalledExactlyOnceWith({ kind: 'user' }, { keepInbox: true })
+    expect(fixture.turnSignal.aborted).toBe(true)
+    fixture.turnRelease.resolve(undefined)
+    await fixture.agent.whenIdle()
+    expect(fixture.agent.session.snapshotEvents().findLast(event => event.type === 'turn/end'))
+      .toMatchObject({ data: { reason: { kind: 'aborted', reason: { kind: 'user' } } } })
+  })
+
+  it('still cancels for a reader with the same subject and tenant but another provider', async () => {
+    const fixture = await readerHarness(bob)
+    const answer = fixture.call(bob)
+    const request = await fixture.decoding.promise
+    await request.entered.promise
+
+    fixture.revoke(alice)
+    expect(request.signal.aborted).toBe(false)
+    request.release.resolve(undefined)
+    expect(await answer).toMatchObject({
+      status: 200,
+      body: { rpcId: 'cancel-rpc', result: { ok: true, value: { accepted: true } } },
+    })
+    expect(fixture.peers.map(peer => peer.principal)).toEqual([{ kind: 'share-viewer', shareId: 'share', actor: bob }])
+    expect(fixture.cancelled).toHaveBeenCalledExactlyOnceWith({ kind: 'user' }, { keepInbox: true })
+    expect(fixture.turnSignal.aborted).toBe(true)
+    fixture.turnRelease.resolve(undefined)
+    await fixture.agent.whenIdle()
+    const boundary = fixture.ctx.get('agents')
+    expect(boundary?.turnBoundaryOf(fixture.agent.session).openTurnStartSeq).toBeNull()
+    expect(fixture.agent.session.snapshotEvents().findLast(event => event.type === 'turn/end'))
+      .toMatchObject({ data: { reason: { kind: 'aborted', reason: { kind: 'user' } } } })
+  })
+
+  it('refuses another reader’s fork before anything is dispatched', async () => {
+    const fixture = await readerHarness(alice)
+    expect(await fixture.call(bob)).toMatchObject({ status: 403, body: { error: 'fork-viewer-mismatch' } })
+    expect(fixture.dispatchedAs).toEqual([])
+    expect(fixture.cancelled).not.toHaveBeenCalled()
+  })
+})
+
+describe('reader cancel of the shared Session through the Gateway', () => {
+  it('stops the shared Session’s running turn as the reader', async () => {
+    const fixture = await readerHarness(alice, 'source')
+    const answer = fixture.call(alice)
+    // The fixture holds the request body until the test releases it, as a cold decode would.
+    const request = await fixture.decoding.promise
+    await request.entered.promise
+    request.release.resolve(undefined)
+
+    expect(await answer).toMatchObject({
+      status: 200,
+      body: { rpcId: 'cancel-rpc', result: { ok: true, value: { accepted: true } } },
+    })
+    // The cancel reaches the owner's Session controller as the reader's own Peer, with no ownership
+    // comparison anywhere: the Gateway's session/cancel stops whatever turn the Session runs.
+    expect(fixture.dispatchedAs).toEqual([fixture.peers[0]])
+    expect(fixture.peers[0]?.principal).toEqual({ kind: 'share-viewer', shareId: 'share', actor: alice })
+    expect(fixture.cancelled).toHaveBeenCalledExactlyOnceWith({ kind: 'user' }, { keepInbox: true })
+    expect(fixture.turnSignal.aborted).toBe(true)
+    fixture.turnRelease.resolve(undefined)
+    await fixture.agent.whenIdle()
+    expect(fixture.agent.session.snapshotEvents().findLast(event => event.type === 'turn/end'))
+      .toMatchObject({ data: { reason: { kind: 'aborted', reason: { kind: 'user' } } } })
+  })
+
+  it('refuses a revoked reader before the cancel is dispatched', async () => {
+    const fixture = await readerHarness(alice, 'source')
+    fixture.revoke(alice)
+
+    expect(await fixture.call(alice)).toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+    expect(fixture.dispatchedAs).toEqual([])
+    expect(fixture.cancelled).not.toHaveBeenCalled()
+    fixture.turnRelease.resolve(undefined)
+    await fixture.agent.whenIdle()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-capabilities.client.spec.ts b/packages/experimental/liveshare/tests/viewer-capabilities.client.spec.ts
new file mode 100644
index 0000000000..069fe22fae
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-capabilities.client.spec.ts
@@ -0,0 +1,62 @@
+/** What one share grants this viewer page. */
+
+import { afterEach, describe, expect, it } from 'vitest'
+import {
+  publishViewerCapabilities, readViewerCapabilities, viewerCapabilities,
+} from '../src/client/viewer-capabilities.ts'
+
+afterEach(() => {
+  publishViewerCapabilities(undefined)
+})
+
+describe('viewer capabilities', () => {
+  it('reads the tier the share is in, and never assumes more than it was told', () => {
+    expect(readViewerCapabilities({ capabilities: { sessionMode: 'view' } })).toEqual({ mode: 'view' })
+    // The withdrawn `fork-readonly` tier granted forking and no writing, so a page reading it holds the
+    // view tier; the fork switch travels separately.
+    expect(readViewerCapabilities({ capabilities: { sessionMode: 'fork-readonly' } })).toEqual({ mode: 'view' })
+    expect(readViewerCapabilities({ capabilities: { sessionMode: 'write' } })).toEqual({ mode: 'write' })
+    expect(readViewerCapabilities({
+      capabilities: { sessionMode: 'write', sessionModeReason: 'share-stopped' },
+    })).toEqual({ mode: 'write', reason: 'share-stopped' })
+  })
+
+  it('holds the narrowest mode when the answer grants nothing, names nothing, or names too much', () => {
+    expect(readViewerCapabilities({ capabilities: { readOnly: true } })).toEqual({ mode: 'view' })
+    expect(readViewerCapabilities({ capabilities: { sessionMode: 'owner' } })).toEqual({ mode: 'view' })
+    expect(readViewerCapabilities({ capabilities: { sessionMode: 3 } })).toEqual({ mode: 'view' })
+    // A tier this build cannot read still carries the Host's reason for it.
+    expect(readViewerCapabilities({ capabilities: { sessionMode: 'future-tier', sessionModeReason: 'share-stopped' } }))
+      .toEqual({ mode: 'view', reason: 'share-stopped' })
+  })
+
+  it('cannot confirm the share when the answer never arrived or carried nothing it could read', () => {
+    // An answer that never arrived is not a share that said it was read-only: the page holds the
+    // narrowest mode and says it could not confirm the share, rather than stating an access it was
+    // never told it still has.
+    expect(readViewerCapabilities(undefined)).toEqual({ mode: 'view', unconfirmed: true })
+    expect(readViewerCapabilities({ capabilities: 'write' })).toEqual({ mode: 'view', unconfirmed: true })
+    expect(readViewerCapabilities(null)).toEqual({ mode: 'view', unconfirmed: true })
+  })
+
+  it('reads a share that carried only the older branching grant as the view tier and no more', () => {
+    // A share older than tiers granted branching at most, and branching is a switch rather than a tier:
+    // reading it as `write` would hand this page the owner's Session, which nothing in that share ever
+    // allowed.
+    expect(readViewerCapabilities({ capabilities: { fork: { allowed: true } } })).toEqual({ mode: 'view' })
+    expect(readViewerCapabilities({ capabilities: { fork: { allowed: false, reason: 'fork-not-permitted' } } }))
+      .toEqual({ mode: 'view', reason: 'fork-not-permitted' })
+    // The other direction: an answer naming a tier this build does not know is a Host this build is
+    // too old for, so the older grant beside it is not a licence to guess — the page holds `view`.
+    expect(readViewerCapabilities({
+      capabilities: { sessionMode: 'owner', fork: { allowed: true } },
+    })).toEqual({ mode: 'view' })
+  })
+
+  it('keeps the page overall grant-free when the answer never arrived', () => {
+    publishViewerCapabilities(undefined)
+    expect(viewerCapabilities.getSnapshot().mode).toBe('view')
+    // Nothing was granted, and the page also records that it could not confirm the share at all.
+    expect(viewerCapabilities.getSnapshot().unconfirmed).toBe(true)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-capability-selection.spec.ts b/packages/experimental/liveshare/tests/viewer-capability-selection.spec.ts
new file mode 100644
index 0000000000..f9bdf34b3e
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-capability-selection.spec.ts
@@ -0,0 +1,95 @@
+/**
+ * Reading the owner's submitted plugin endpoint selection against the live offers: what is accepted,
+ * what each refusal names, and how an empty or partly empty submission is stored.
+ */
+import { describe, expect, it } from 'vitest'
+import { readViewerCapabilitySelection } from '../src/host/viewer-capability-selection.ts'
+import type { ViewerCapabilityGroup } from '../src/host/viewer-declarations.ts'
+
+const READABLE = 'mekGit/getGraph'
+const SECOND_READABLE = 'mekGit/listBranches'
+const WRITABLE = 'mekGit/commit'
+const OTHER_READABLE = 'mekSearch/query'
+
+/** The live offers every case is decided against: one plugin offering both kinds, one reading only. */
+const OFFERED: readonly ViewerCapabilityGroup[] = [
+  { plugin: 'mekGit', readable: [SECOND_READABLE, READABLE], writable: [WRITABLE] },
+  { plugin: 'mekSearch', readable: [OTHER_READABLE], writable: [] },
+]
+
+describe('owner endpoint selection against the live offers', () => {
+  it('accepts the endpoints a plugin currently offers, grouped in offer order', () => {
+    expect(readViewerCapabilitySelection(OFFERED, [
+      { plugin: 'mekSearch', readable: [OTHER_READABLE], writable: [] },
+      { plugin: 'mekGit', readable: [SECOND_READABLE, READABLE], writable: [WRITABLE] },
+    ])).toEqual({
+      ok: true,
+      selection: [
+        { plugin: 'mekGit', readable: [READABLE, SECOND_READABLE], writable: [WRITABLE] },
+        { plugin: 'mekSearch', readable: [OTHER_READABLE], writable: [] },
+      ],
+    })
+  })
+
+  it('stores no selection for an empty submission, which is the share record omitted', () => {
+    expect(readViewerCapabilitySelection(OFFERED, [])).toEqual({ ok: true, selection: undefined })
+  })
+
+  it('stores no selection for groups that name nothing, and drops those groups from a mixed one', () => {
+    expect(readViewerCapabilitySelection(OFFERED, [
+      { plugin: 'mekGit', readable: [], writable: [] },
+      { plugin: 'mekSearch', readable: [], writable: [] },
+    ])).toEqual({ ok: true, selection: undefined })
+    expect(readViewerCapabilitySelection(OFFERED, [
+      { plugin: 'mekGit', readable: [], writable: [] },
+      { plugin: 'mekSearch', readable: [OTHER_READABLE], writable: [] },
+    ])).toEqual({ ok: true, selection: [{ plugin: 'mekSearch', readable: [OTHER_READABLE], writable: [] }] })
+  })
+
+  it('merges a plugin submitted more than once and keeps each endpoint once', () => {
+    expect(readViewerCapabilitySelection(OFFERED, [
+      { plugin: 'mekGit', readable: [READABLE], writable: [] },
+      { plugin: 'mekGit', readable: [READABLE, SECOND_READABLE], writable: [WRITABLE] },
+    ])).toEqual({
+      ok: true,
+      selection: [{ plugin: 'mekGit', readable: [READABLE, SECOND_READABLE], writable: [WRITABLE] }],
+    })
+  })
+
+  it('refuses a plugin the live offers do not name, naming it', () => {
+    expect(readViewerCapabilitySelection(OFFERED, [{ plugin: 'ghost', readable: [], writable: [] }]))
+      .toEqual({ ok: false, refusal: { code: 'unknown-plugin', plugin: 'ghost' } })
+  })
+
+  it('refuses an endpoint the plugin does not offer, naming the plugin, kind, and endpoint', () => {
+    expect(readViewerCapabilitySelection(OFFERED, [{ plugin: 'mekGit', readable: ['mekGit/unknown'], writable: [] }]))
+      .toEqual({ ok: false, refusal: { code: 'endpoint-not-offered', plugin: 'mekGit', kind: 'readable', endpoint: 'mekGit/unknown' } })
+    expect(readViewerCapabilitySelection(OFFERED, [{ plugin: 'mekGit', readable: [], writable: [SECOND_READABLE] }]))
+      .toEqual({ ok: false, refusal: { code: 'endpoint-not-offered', plugin: 'mekGit', kind: 'writable', endpoint: SECOND_READABLE } })
+  })
+
+  it('keeps the kinds apart: an endpoint offered as writable is not selectable as readable', () => {
+    expect(readViewerCapabilitySelection(OFFERED, [{ plugin: 'mekGit', readable: [WRITABLE], writable: [] }]))
+      .toEqual({ ok: false, refusal: { code: 'endpoint-not-offered', plugin: 'mekGit', kind: 'readable', endpoint: WRITABLE } })
+  })
+
+  it('refuses an endpoint another plugin offers under the same name', () => {
+    expect(readViewerCapabilitySelection(OFFERED, [{ plugin: 'mekGit', readable: [OTHER_READABLE], writable: [] }]))
+      .toEqual({ ok: false, refusal: { code: 'endpoint-not-offered', plugin: 'mekGit', kind: 'readable', endpoint: OTHER_READABLE } })
+  })
+
+  it.each([
+    ['a value that is not an array', 'mekGit'],
+    ['an entry that is not an object', ['mekGit']],
+    ['a missing plugin name', [{ readable: [], writable: [] }]],
+    ['an empty plugin name', [{ plugin: '', readable: [], writable: [] }]],
+    ['a non-string plugin name', [{ plugin: 7, readable: [], writable: [] }]],
+    ['a missing readable list', [{ plugin: 'mekGit', writable: [] }]],
+    ['a readable list that is not an array', [{ plugin: 'mekGit', readable: READABLE, writable: [] }]],
+    ['a writable list that is not an array', [{ plugin: 'mekGit', readable: [], writable: WRITABLE }]],
+    ['a non-string endpoint', [{ plugin: 'mekGit', readable: [7], writable: [] }]],
+    ['an empty endpoint name', [{ plugin: 'mekGit', readable: [''], writable: [] }]],
+  ])('refuses %s', (_label, input) => {
+    expect(readViewerCapabilitySelection(OFFERED, input)).toEqual({ ok: false, refusal: { code: 'invalid-capabilities' } })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-channel.spec.ts b/packages/experimental/liveshare/tests/viewer-channel.spec.ts
new file mode 100644
index 0000000000..5d43bf7dfd
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-channel.spec.ts
@@ -0,0 +1,70 @@
+/** The viewer channel's own decoding: which forwarded bodies name a request, and which do not. */
+
+import { describe, expect, it } from 'vitest'
+import { parseViewerRequest, viewerRequestTarget } from '../src/viewer-channel.ts'
+
+describe('viewer request decoding', () => {
+  it('refuses every body that is not one request record', () => {
+    for (const refused of [undefined, null, 'call', 7, [], ['call']]) {
+      expect(parseViewerRequest(refused), String(refused)).toBeUndefined()
+    }
+  })
+
+  it('reads one unary call only when it names an absolute path and carries a body', () => {
+    expect(parseViewerRequest({ op: 'call', path: '/api/session/list', body: { args: {} } }))
+      .toEqual({ op: 'call', path: '/api/session/list', body: { args: {} } })
+    expect(parseViewerRequest({ op: 'call', path: 'api/session/list', body: {} })).toBeUndefined()
+    expect(parseViewerRequest({ op: 'call', path: '/api/session/list' })).toBeUndefined()
+    expect(parseViewerRequest({ op: 'call', path: 3, body: {} })).toBeUndefined()
+  })
+
+  it('reads a stream open only with a positive safe-integer id, an endpoint, and a payload', () => {
+    expect(parseViewerRequest({ op: 'stream-open', id: 4, endpoint: 'session/events', payload: { args: {} } }))
+      .toEqual({ op: 'stream-open', id: 4, endpoint: 'session/events', payload: { args: {} } })
+    expect(parseViewerRequest({ op: 'stream-open', id: 0, endpoint: 'session/events', payload: {} })).toBeUndefined()
+    expect(parseViewerRequest({ op: 'stream-open', id: 4, endpoint: '', payload: {} })).toBeUndefined()
+    expect(parseViewerRequest({ op: 'stream-open', id: 4, endpoint: 'session/events' })).toBeUndefined()
+  })
+
+  it('reads the next poll and the cancel only with a stream id it minted', () => {
+    expect(parseViewerRequest({ op: 'stream-next', id: 4 })).toEqual({ op: 'stream-next', id: 4 })
+    expect(parseViewerRequest({ op: 'stream-next', id: -1 })).toBeUndefined()
+    expect(parseViewerRequest({ op: 'stream-cancel', id: 4 })).toEqual({ op: 'stream-cancel', id: 4 })
+    expect(parseViewerRequest({ op: 'stream-cancel', id: 1.5 })).toBeUndefined()
+  })
+
+  it('reads an asset read from its path alone, and refuses a path that is not text', () => {
+    expect(parseViewerRequest({ op: 'asset', path: 'assets/a.js' })).toEqual({ op: 'asset', path: 'assets/a.js' })
+    expect(parseViewerRequest({ op: 'asset', path: '' })).toEqual({ op: 'asset', path: '' })
+    expect(parseViewerRequest({ op: 'asset' })).toBeUndefined()
+  })
+
+  it('refuses an operation this build does not serve', () => {
+    expect(parseViewerRequest({ op: 'subscribe', path: '/api/session/list', body: {} })).toBeUndefined()
+    expect(parseViewerRequest({ path: '/api/session/list', body: {} })).toBeUndefined()
+  })
+})
+
+describe('viewer request target', () => {
+  it('unwraps a stream payload that carries its request beside the envelope args', () => {
+    expect(viewerRequestTarget({ payload: { args: { request: { sessionId: 'source' } } } }))
+      .toEqual({ sessionId: 'source' })
+    expect(viewerRequestTarget({ args: { request: { sessionId: 'source' } } })).toEqual({ sessionId: 'source' })
+  })
+
+  it('answers the request record itself when there is no nested request to unwrap', () => {
+    // Neither a unary envelope nor a stream payload may state `args` at all.
+    expect(viewerRequestTarget({ op: 'call', path: '/api/session/list' }))
+      .toEqual({ op: 'call', path: '/api/session/list' })
+    expect(viewerRequestTarget({ args: {} })).toEqual({ args: {} })
+    // `args.request` that is not a record names no request, so the payload is the request.
+    expect(viewerRequestTarget({ payload: { args: { request: 'session/events' } } }))
+      .toEqual({ args: { request: 'session/events' } })
+  })
+
+  it('reads nothing from a value that is not a record', () => {
+    for (const refused of [undefined, null, 'session/events', 0, []]) {
+      expect(viewerRequestTarget(refused), String(refused)).toBeUndefined()
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-context.client.spec.ts b/packages/experimental/liveshare/tests/viewer-context.client.spec.ts
new file mode 100644
index 0000000000..15d56a1b9a
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-context.client.spec.ts
@@ -0,0 +1,231 @@
+// @vitest-environment jsdom
+/** The viewer page's own read of the share: what it states, and what it grants. */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { viewerCapabilities } from '../src/client/viewer-capabilities.ts'
+import { readViewerContext, viewerContextFacts } from '../src/client/viewer-context.ts'
+import { noteViewerStatusFacts, viewerStatus, viewerStatusFacts } from '../src/client/viewer-status.ts'
+
+afterEach(() => {
+  vi.unstubAllGlobals()
+  viewerContextFacts.set({})
+  viewerCapabilities.set({ mode: 'view' })
+  viewerStatusFacts.set({})
+  viewerStatus.set('connecting')
+})
+
+/**
+ * Serve the two Relay reads one page makes.
+ * @param context - Body for `/__liveshare/context`, or undefined to fail that read.
+ * @param health - Body for `/health`, or undefined to fail that read.
+ * @returns Every URL the page asked for, in order.
+ */
+function serve(context: unknown, health: unknown): string[] {
+  const asked: string[] = []
+  vi.stubGlobal('fetch', vi.fn((input: unknown) => {
+    const url = String(input)
+    asked.push(url)
+    if (url.includes('/__liveshare/context')) {
+      return context === undefined
+        ? Promise.reject(new Error('unavailable'))
+        : Promise.resolve(Response.json(context))
+    }
+    if (url.endsWith('/health')) {
+      return health === undefined
+        ? Promise.reject(new Error('unavailable'))
+        : Promise.resolve(Response.json(health))
+    }
+    return Promise.reject(new Error(`Unexpected request: ${url}`))
+  }))
+  return asked
+}
+
+/** Deterministic settlement control for overlapping endpoint responses. */
+function deferred<T>() {
+  let settle!: (value: T) => void
+  const promise = new Promise<T>((resolve) => { settle = resolve })
+  return { promise, settle }
+}
+
+/**
+ * The endpoints the retired per-viewer approval flow served.
+ *
+ * The page no longer asks any of them; a build that still did would put a reader back in front of a
+ * decision nothing can make.
+ */
+const RETIRED_ENDPOINTS: readonly string[] = [
+  'request-access', 'request-status', 'decide-access', 'grant-access', 'revoke-access', '/__liveshare/approval',
+]
+
+describe('viewer context read', () => {
+  it('states the share\u2019s answer and clears what an earlier read stated', async () => {
+    noteViewerStatusFacts({ reason: 'share-stopped', unconfirmed: true })
+    const asked = serve({ capabilities: { sessionMode: 'view', online: true } }, undefined)
+    await readViewerContext('', 'share-1')
+    expect(viewerStatusFacts.getSnapshot().reason).toBeUndefined()
+    expect(viewerStatus.getSnapshot()).toBe('ready')
+    expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'view' })
+    expect(asked).toEqual(['/__liveshare/context?shareId=share-1', '/health'])
+  })
+
+  it.each([{}, { capabilities: null }, { capabilities: [] }, { capabilities: 'unknown' }].map(context => [context]))(
+    'confirms nothing when the context carries no capabilities: %j', async (context) => {
+      serve(context, undefined)
+      await readViewerContext('', 'share-1')
+      expect(viewerStatus.getSnapshot()).toBe('connecting')
+      expect(viewerStatusFacts.getSnapshot().unconfirmed).toBe(true)
+      expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'view', unconfirmed: true })
+    },
+  )
+
+  it.each([null, []].map(body => [body]))(
+    'states an unreadable context body as unreachable: %j', async (body) => {
+      serve(body, undefined)
+      await readViewerContext('', 'share-1')
+      expect(viewerStatus.getSnapshot()).toBe('unavailable')
+      expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'view', unconfirmed: true })
+    },
+  )
+
+  it('drops an older refusal that arrives after a newer readable read', async () => {
+    const olderContext = deferred<Response>()
+    let contexts = 0
+    vi.stubGlobal('fetch', vi.fn((input: unknown) => {
+      const url = String(input)
+      if (!url.includes('/__liveshare/context')) return Promise.resolve(Response.json({ release_id: 'r1' }))
+      contexts += 1
+      return contexts === 1
+        ? olderContext.promise
+        : Promise.resolve(Response.json({ capabilities: { sessionMode: 'view', sessionModeReason: 'mode-view' } }))
+    }))
+    const older = readViewerContext('', 'share-1')
+    await readViewerContext('', 'share-1')
+    expect(viewerStatus.getSnapshot()).toBe('ready')
+    expect(viewerStatusFacts.getSnapshot().reason).toBe('mode-view')
+    // The older read settles as a refusal: it states what that read found, which no longer holds.
+    olderContext.settle(new Response('', { status: 404 }))
+    await older
+    expect(viewerStatus.getSnapshot()).toBe('ready')
+    expect(viewerStatusFacts.getSnapshot().notFound).toBe(false)
+  })
+
+  it('publishes nothing from page reads that settle after cancellation', async () => {
+    const response = deferred<Response>()
+    vi.stubGlobal('fetch', vi.fn(() => response.promise))
+    const lifetime = new AbortController()
+    const read = readViewerContext('', 'share-1', lifetime.signal)
+    lifetime.abort()
+    response.settle(Response.json({ capabilities: { sessionMode: 'write', online: true } }))
+    await read
+    expect(viewerStatusFacts.getSnapshot()).toEqual({})
+    expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'view' })
+  })
+
+  it('states the owner and build facts and publishes what the share grants', async () => {
+    const asked = serve(
+      {
+        ownerSubjectId: 'feishu:tenant:ou_9f2c4d',
+        dshVersion: '0.1.5-rc.2+build',
+        capabilities: { readOnly: true, fork: { allowed: true } },
+      },
+      { release_id: '20260911-143800-6a72b8' },
+    )
+    await readViewerContext('/team/liveshare', 'e8HUU7dYsW7Y')
+    expect(asked).toEqual([
+      '/team/liveshare/__liveshare/context?shareId=e8HUU7dYsW7Y',
+      '/team/liveshare/health',
+    ])
+    expect(viewerContextFacts.getSnapshot()).toEqual({
+      ownerSubjectId: 'feishu:tenant:ou_9f2c4d',
+      dshVersion: '0.1.5-rc.2+build',
+      relay: '20260911-143800-6a72b8',
+    })
+    // The older branch-only answer is the view tier: branching is a switch, not a tier.
+    expect(viewerCapabilities.getSnapshot().mode).toBe('view')
+  })
+
+  it('never asks a retired admission endpoint', async () => {
+    const asked = serve({ capabilities: { sessionMode: 'view', online: true } }, { release_id: 'r1' })
+    await readViewerContext('', 'share-1')
+    for (const url of asked) {
+      for (const gone of RETIRED_ENDPOINTS) expect(url, gone).not.toContain(gone)
+    }
+  })
+
+  it('grants nothing and states nothing when the share cannot be read', async () => {
+    serve(undefined, undefined)
+    await readViewerContext('', 'gone')
+    expect(viewerContextFacts.getSnapshot()).toEqual({})
+    // A reader whose page cannot reach the Relay keeps the read-only posture: no assumed grant.
+    expect(viewerCapabilities.getSnapshot().mode).toBe('view')
+  })
+
+  it('falls back to the git sha for the Relay build when it reports no release', async () => {
+    // The owner name also arrives under `capabilities` from the older answer, and the Relay states
+    // its own build as a sha when it has no release id.
+    serve({ capabilities: { ownerDisplayName: 'Owner' } }, { git_sha: 'relay-build-7' })
+    await readViewerContext('', 'share-1')
+    expect(viewerContextFacts.getSnapshot()).toEqual({
+      owner: 'Owner',
+      relay: 'relay-build-7',
+    })
+  })
+
+  it.each([401, 403])('closes what the page held on a %s answer without waiting for the build facts', async (status) => {
+    serve({ capabilities: { sessionMode: 'fork-readonly' } }, { release_id: 'r1' })
+    await readViewerContext('', 'share-1')
+    expect(viewerCapabilities.getSnapshot().mode).toBe('view')
+
+    // The share refuses while the build facts never answer. The abilities answer stands on its own, so
+    // the refusal closes them — no reason invented, and nothing waiting on `/health`.
+    const asked: string[] = []
+    let answerBuild: (() => void) | undefined
+    const buildHeld = new Promise<void>((resolve) => { answerBuild = resolve })
+    vi.stubGlobal('fetch', vi.fn((input: unknown) => {
+      const url = String(input)
+      asked.push(url)
+      return url.includes('/__liveshare/context')
+        ? Promise.resolve(new Response('', { status }))
+        : buildHeld.then(() => Response.json({ release_id: 'r2' }))
+    }))
+    const read = readViewerContext('', 'share-1')
+    await vi.waitFor(() => { expect(viewerCapabilities.getSnapshot().mode).toBe('view') })
+    expect(asked).toContain('/health')
+    let settled = false
+    void read.then(() => { settled = true })
+    // A turn of the queue: the abilities answer closed the page, and this read is still waiting on the
+    // build facts rather than on the answer that mattered.
+    await new Promise(resolve => setTimeout(resolve, 0))
+    expect(settled).toBe(false)
+    answerBuild?.()
+    await read
+    expect(viewerContextFacts.getSnapshot().relay).toBe('r2')
+  })
+
+  it('drops an older answer that arrives after a newer read', async () => {
+    let answerGrant: (() => void) | undefined
+    const grantedHeld = new Promise<void>((resolve) => { answerGrant = resolve })
+    let shareReads = 0
+    vi.stubGlobal('fetch', vi.fn((input: unknown) => {
+      const url = String(input)
+      if (!url.includes('/__liveshare/context')) return Promise.resolve(Response.json({ release_id: 'r1' }))
+      shareReads += 1
+      // The first ask grants branching but answers late; the second narrows the share right away.
+      return shareReads === 1
+        ? grantedHeld.then(() => Response.json({ capabilities: { sessionMode: 'fork-readonly' } }))
+        : Promise.resolve(Response.json({
+          capabilities: { sessionMode: 'view', sessionModeReason: 'mode-view' },
+        }))
+    }))
+    const older = readViewerContext('', 'share-1')
+    const newer = readViewerContext('', 'share-1')
+    await newer
+    expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'view', reason: 'mode-view' })
+
+    // The older, slower answer states what the share said when that read was asked: it must not
+    // restore an ability the newer answer took away.
+    answerGrant?.()
+    await older
+    expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'view', reason: 'mode-view' })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-declarations.spec.ts b/packages/experimental/liveshare/tests/viewer-declarations.spec.ts
new file mode 100644
index 0000000000..a8a555804d
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-declarations.spec.ts
@@ -0,0 +1,461 @@
+/**
+ * The temporary plugin capability surface: which endpoints a plugin may offer for share viewers, how the
+ * declaring package is verified, how an offer binds to the declaring plugin's own fiber, what a rejected
+ * name does, and how an offer that a share selected reaches an already open access snapshot.
+ */
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { Context } from '@deepseek-ai/cordis'
+import TypertGatewayService from '@deepseek-ai/dsh-api-gateway'
+import RemoteAccessService, { type RemoteAccessFrame } from '@deepseek-ai/dsh-api-remote-access'
+import { Peer } from '@deepseek-ai/dsh-client-connection'
+import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
+import { createViewerAccessPolicy, type ViewerAccessFacts } from '../src/host/viewer-access-policy.ts'
+import {
+  VIEWER_DECLARATIONS_SERVICE,
+  ViewerDeclarations,
+  viewerDeclarationsOf,
+  type ViewerCapabilityGroup,
+  type ViewerDeclarationsSurface,
+} from '../src/host/viewer-declarations.ts'
+import { shareViewerPrincipal, type ShareViewerPrincipal } from '../src/host/viewer-principal.ts'
+import { endpointContribution, mountDeclaringPlugin } from './viewer-endpoint-fixture.ts'
+
+const reader = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_reader' }
+const READER = shareViewerPrincipal('share', reader)
+const PACKAGE = '@fixture/mek-git'
+const OTHER_PACKAGE = '@fixture/mek-search'
+const READABLE = 'mekGit/getGraph'
+const WRITABLE = 'mekGit/commit'
+const OTHER_READABLE = 'mekSearch/find'
+const DECLARER = 'mekGit'
+
+const roots: Context[] = []
+
+afterEach(async () => {
+  await Promise.all(roots.splice(0).map(ctx => ctx.fiber.dispose()))
+})
+
+function context(): Context {
+  const ctx = new Context()
+  roots.push(ctx)
+  return ctx
+}
+
+function mount(host: Context, changed?: () => void): ViewerDeclarations {
+  const declarations = new ViewerDeclarations(host)
+  if (changed !== undefined) declarations.onChanged(changed)
+  return declarations
+}
+
+/** The two fixtures a declaration case needs: the surface on `ctx`, and one declaring plugin's own view of it. */
+async function declaringFixture(): Promise<{
+  readonly ctx: Context
+  readonly declarations: ViewerDeclarations
+  readonly surface: ViewerDeclarationsSurface
+}> {
+  const ctx = context()
+  await ctx.plugin(TypertRegistry)
+  ctx.typert.register(endpointContribution(PACKAGE, [READABLE, WRITABLE]))
+  const declarations = mount(ctx)
+  let surface: ViewerDeclarationsSurface | undefined
+  await mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+    surface = viewerDeclarationsOf(pluginCtx)
+  })
+  if (surface === undefined) throw new Error('the declaring plugin did not reach the declaration surface')
+  return { ctx, declarations, surface }
+}
+
+describe('viewer capability declarations', () => {
+  it('is absent from an application that mounts no share host', () => {
+    expect(viewerDeclarationsOf(context())).toBeUndefined()
+  })
+
+  it('narrows the surface structurally, not by class identity', () => {
+    const ctx = context()
+    // The Loader instantiates a module once per entry, so the entry that provides the surface and a
+    // consumer in another entry hold different ViewerDeclarations classes for the same service value.
+    const provider = {
+      registerViewerReadable: () => () => {},
+      registerViewerWritable: () => () => {},
+      onChanged: () => () => {},
+      declaredCapabilities: () => [],
+    }
+    ctx.provide(VIEWER_DECLARATIONS_SERVICE, provider as never)
+    expect(viewerDeclarationsOf(ctx)).toBe(provider)
+
+    // A value missing any operation is not the surface.
+    ctx.set(VIEWER_DECLARATIONS_SERVICE, { ...provider, onChanged: undefined })
+    expect(viewerDeclarationsOf(ctx)).toBeUndefined()
+  })
+
+  it('offers, reference-counts, and withdraws each kind independently', async () => {
+    const { surface, declarations } = await declaringFixture()
+    // The accessor returns the traced service, so identity is not the contract; membership is.
+    expect(declarations.declaredCapabilities()).toEqual([])
+
+    const first = surface.registerViewerReadable([READABLE])
+    expect(declarations.declaredCapabilities()).toEqual([{ plugin: PACKAGE, readable: [READABLE], writable: [] }])
+    // Declaring the same name twice is idempotent, and the name stays offered while either registration lives.
+    const second = surface.registerViewerReadable([READABLE, READABLE])
+    expect(declarations.declaredCapabilities()).toEqual([{ plugin: PACKAGE, readable: [READABLE], writable: [] }])
+    second()
+    expect(declarations.declaredCapabilities()).toEqual([{ plugin: PACKAGE, readable: [READABLE], writable: [] }])
+    first()
+    expect(declarations.declaredCapabilities()).toEqual([])
+
+    const writable = surface.registerViewerWritable([WRITABLE])
+    expect(declarations.declaredCapabilities()).toEqual([{ plugin: PACKAGE, readable: [], writable: [WRITABLE] }])
+    writable()
+    expect(declarations.declaredCapabilities()).toEqual([])
+  })
+
+  it('reports every registration and disposal, and nothing else', async () => {
+    const { surface, declarations } = await declaringFixture()
+    const changes: string[] = []
+    const stop = declarations.onChanged(() => { changes.push('changed') })
+    const empty = surface.registerViewerReadable([])
+    const emptyWritable = surface.registerViewerWritable([])
+    expect(changes).toEqual([])
+    expect(() => { empty(); emptyWritable() }).not.toThrow()
+
+    const dispose = surface.registerViewerReadable([READABLE])
+    expect(changes).toEqual(['changed'])
+    const second = surface.registerViewerWritable([WRITABLE])
+    expect(changes).toEqual(['changed', 'changed'])
+    dispose()
+    second()
+    expect(changes).toEqual(['changed', 'changed', 'changed', 'changed'])
+    expect(declarations.declaredCapabilities()).toEqual([])
+    stop()
+  })
+
+  it('reports later changes to a listener that subscribed after a declaration', async () => {
+    const { surface, declarations } = await declaringFixture()
+    // A consumer may attach after a plugin already offered something, as the share host does when it
+    // starts later than the plugins that declare endpoints.
+    surface.registerViewerReadable([READABLE])
+    const changes: string[] = []
+    const stop = declarations.onChanged(() => { changes.push('changed') })
+    const writable = surface.registerViewerWritable([WRITABLE])
+    expect(changes).toEqual(['changed'])
+    stop()
+    writable()
+    expect(changes).toEqual(['changed'])
+    expect(declarations.declaredCapabilities())
+      .toEqual([{ plugin: PACKAGE, readable: [READABLE], writable: [] }])
+  })
+
+  it.each([
+    'mekGit',
+    '/getGraph',
+    'mekGit/',
+    'mekGit/get/Graph',
+    'event:api-session/status',
+    'mek git/getGraph',
+    'mekGit/get Graph',
+    'mekGit:getGraph',
+  ])('rejects %j as not a <namespace>/<method> Remote endpoint', async (name) => {
+    const { surface, declarations } = await declaringFixture()
+    expect(() => surface.registerViewerReadable([name]))
+      .toThrow(`liveshare: viewer-readable endpoint ${JSON.stringify(name)} must be a <namespace>/<method> Remote endpoint`)
+    expect(() => surface.registerViewerWritable([name]))
+      .toThrow(`liveshare: viewer-writable endpoint ${JSON.stringify(name)} must be a <namespace>/<method> Remote endpoint`)
+    expect(declarations.declaredCapabilities()).toEqual([])
+  })
+
+  it('registers none of a list that names one invalid endpoint', async () => {
+    const { surface, declarations } = await declaringFixture()
+    expect(() => surface.registerViewerReadable([READABLE, 'not-an-endpoint'])).toThrow(TypeError)
+    expect(() => surface.registerViewerWritable([WRITABLE, 'mekGit/get/Graph'])).toThrow(TypeError)
+    expect(declarations.declaredCapabilities()).toEqual([])
+  })
+
+  it('accepts a plugin\'s declaration of its own package\'s live endpoints and records that package', async () => {
+    const ctx = context()
+    await ctx.plugin(TypertRegistry)
+    ctx.typert.register(endpointContribution(PACKAGE, [READABLE, WRITABLE]))
+    const declarations = mount(ctx)
+    await mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+      viewerDeclarationsOf(pluginCtx)?.registerViewerReadable([READABLE])
+      viewerDeclarationsOf(pluginCtx)?.registerViewerWritable([WRITABLE])
+    })
+    const offered = declarations.declaredCapabilities()
+    expect(offered).toEqual([{ plugin: PACKAGE, readable: [READABLE], writable: [WRITABLE] }])
+    // The attribution is the verified package, not the plugin's display name.
+    expect(offered[0]?.plugin).not.toBe(DECLARER)
+  })
+
+  it('rejects an endpoint the Host does not define', async () => {
+    const ctx = context()
+    await ctx.plugin(TypertRegistry)
+    const declarations = mount(ctx)
+    vi.spyOn(ctx.logger, 'error').mockImplementation(() => {})
+    const plugin = mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+      viewerDeclarationsOf(pluginCtx)?.registerViewerReadable(['mekGit/missing'])
+    })
+    await expect(plugin).rejects.toThrow(
+      'liveshare: viewer-readable endpoint "mekGit/missing" is not a live Host Remote endpoint')
+    expect(declarations.declaredCapabilities()).toEqual([])
+  })
+
+  it('rejects an endpoint that belongs to another package', async () => {
+    const ctx = context()
+    await ctx.plugin(TypertRegistry)
+    ctx.typert.register(endpointContribution(OTHER_PACKAGE, [OTHER_READABLE]))
+    const declarations = mount(ctx)
+    vi.spyOn(ctx.logger, 'error').mockImplementation(() => {})
+    const plugin = mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+      viewerDeclarationsOf(pluginCtx)?.registerViewerReadable([OTHER_READABLE])
+    })
+    await expect(plugin).rejects.toThrow(
+      `liveshare: viewer-readable endpoint "${OTHER_READABLE}" belongs to package "${OTHER_PACKAGE}", `
+      + `not to the declaring package "${PACKAGE}"`)
+    expect(declarations.declaredCapabilities()).toEqual([])
+  })
+
+  it.each(['unowned', `#${READABLE}`])(
+    'rejects an endpoint whose generated id %j names no owning package',
+    async (id) => {
+      const ctx = context()
+      await ctx.plugin(TypertRegistry)
+      const contribution = endpointContribution(PACKAGE, [READABLE])
+      const [invocation] = contribution.invocations
+      if (invocation === undefined) throw new Error('the fixture contribution has no invocation')
+      ctx.typert.register({ ...contribution, invocations: [{ ...invocation, id }] })
+      const declarations = mount(ctx)
+      vi.spyOn(ctx.logger, 'error').mockImplementation(() => {})
+      const plugin = mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+        viewerDeclarationsOf(pluginCtx)?.registerViewerReadable([READABLE])
+      })
+      await expect(plugin).rejects.toThrow(
+        `liveshare: viewer-readable endpoint "${READABLE}" has generated id ${JSON.stringify(id)}, `
+        + 'which does not name an owning package')
+      expect(declarations.declaredCapabilities()).toEqual([])
+    })
+
+  it('rejects a declaration in a Host that mounts no local Typert registry', async () => {
+    const ctx = context()
+    const declarations = mount(ctx)
+    vi.spyOn(ctx.logger, 'error').mockImplementation(() => {})
+    const plugin = mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+      viewerDeclarationsOf(pluginCtx)?.registerViewerReadable([READABLE])
+    })
+    await expect(plugin).rejects.toThrow(
+      `liveshare: viewer-readable endpoint "${READABLE}" is not a live Host Remote endpoint`)
+    expect(declarations.declaredCapabilities()).toEqual([])
+  })
+
+  it('rejects every declaration from a fiber without a Loader entry name', async () => {
+    const ctx = context()
+    await ctx.plugin(TypertRegistry)
+    ctx.typert.register(endpointContribution(PACKAGE, [READABLE]))
+    const declarations = mount(ctx)
+    vi.spyOn(ctx.logger, 'error').mockImplementation(() => {})
+    // A programmatic ctx.plugin() composition has no Loader entry; the plugin cannot name its own package.
+    const plugin = ctx.plugin({
+      name: DECLARER,
+      apply: (pluginCtx: Context) => {
+        viewerDeclarationsOf(pluginCtx)?.registerViewerReadable([READABLE])
+      },
+    })
+    await expect(plugin).rejects.toThrow(
+      `liveshare: viewer-readable endpoints ["${READABLE}"] have no declaring package: `
+      + 'the plugin has no Loader entry name, which a programmatic ctx.plugin() composition cannot supply')
+    expect(declarations.declaredCapabilities()).toEqual([])
+  })
+
+  it('names the declaring package and withdraws its offer with its own fiber', async () => {
+    const ctx = context()
+    await ctx.plugin(TypertRegistry)
+    ctx.typert.register(endpointContribution(PACKAGE, [READABLE, WRITABLE]))
+    const declarations = mount(ctx)
+    const plugin = await mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+      const surface = viewerDeclarationsOf(pluginCtx)
+      expect(surface).toBeInstanceOf(ViewerDeclarations)
+      surface?.registerViewerReadable([READABLE])
+      surface?.registerViewerWritable([WRITABLE])
+    })
+    expect(declarations.declaredCapabilities())
+      .toEqual([{ plugin: PACKAGE, readable: [READABLE], writable: [WRITABLE] }])
+    // The effect binds the CALLER's fiber, not the fiber that provides the service.
+    await plugin.dispose()
+    expect(declarations.declaredCapabilities()).toEqual([])
+  })
+
+  it('reports the offered packages in one stable order regardless of who declared first', async () => {
+    const ctx = context()
+    await ctx.plugin(TypertRegistry)
+    ctx.typert.register(endpointContribution(PACKAGE, [READABLE]))
+    ctx.typert.register(endpointContribution(OTHER_PACKAGE, [OTHER_READABLE]))
+    const declarations = mount(ctx)
+    // The later-sorting package declares first, so insertion order cannot supply the answer.
+    await mountDeclaringPlugin(ctx, 'mekSearch', OTHER_PACKAGE, (pluginCtx) => {
+      viewerDeclarationsOf(pluginCtx)?.registerViewerReadable([OTHER_READABLE])
+    })
+    await mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+      viewerDeclarationsOf(pluginCtx)?.registerViewerReadable([READABLE])
+    })
+
+    expect(declarations.declaredCapabilities().map(group => group.plugin)).toEqual([PACKAGE, OTHER_PACKAGE])
+  })
+
+  it('treats a repeated withdrawal of the same declaration as the one withdrawal it was', async () => {
+    const ctx = context()
+    await ctx.plugin(TypertRegistry)
+    ctx.typert.register(endpointContribution(PACKAGE, [READABLE]))
+    const declarations = mount(ctx)
+    const withdrawn: (() => void)[] = []
+    await mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+      const surface = viewerDeclarationsOf(pluginCtx)
+      if (surface === undefined) throw new Error('the declaring plugin did not reach the declaration surface')
+      withdrawn.push(surface.registerViewerReadable([READABLE]))
+    })
+    expect(declarations.declaredCapabilities()).toEqual([{ plugin: PACKAGE, readable: [READABLE], writable: [] }])
+
+    withdrawn[0]?.()
+    // The registration is gone; a caller that repeats its own teardown cannot withdraw another's offer.
+    withdrawn[0]?.()
+    expect(declarations.declaredCapabilities()).toEqual([])
+  })
+
+  it('removes the whole surface with the fiber that provides it', async () => {
+    const ctx = context()
+    const provider = ctx.plugin({ apply: (hostCtx: Context) => { mount(hostCtx) } })
+    await provider
+    expect(viewerDeclarationsOf(ctx)).toBeInstanceOf(ViewerDeclarations)
+    await provider.dispose()
+    expect(viewerDeclarationsOf(ctx)).toBeUndefined()
+  })
+})
+
+/**
+ * One share host's minimum for the snapshot case: the access service, the Gateway that dispatches `follow`,
+ * the real `share-viewer` policy, and the capability surface. The share's owner already selected the
+ * `mekGit` package's endpoint, so exposure then follows the plugin's declaration alone.
+ * @returns The mounted context and the owner's selection, which replacing it recomputes the snapshot from.
+ */
+async function snapshotFixture(): Promise<{
+  readonly ctx: Context
+  readonly select: (groups: readonly ViewerCapabilityGroup[]) => void
+}> {
+  const ctx = context()
+  await ctx.plugin(TypertRegistry)
+  ctx.typert.register(endpointContribution(PACKAGE, [READABLE]))
+  await ctx.plugin(RemoteAccessService)
+  await ctx.plugin(TypertGatewayService)
+  const access = ctx.remoteAccess
+  const declarations = mount(ctx, () => { access.invalidate() })
+  let selected: readonly ViewerCapabilityGroup[] = [{ plugin: PACKAGE, readable: [READABLE], writable: [] }]
+  const facts: ViewerAccessFacts = {
+    share: () => ({
+      shareId: 'share',
+      sessionId: 'source',
+      allowsFork: true,
+      viewerAdmitted: true,
+      stopped: false,
+      sessionMode: 'view',
+      viewerCapabilities: selected,
+    }),
+    viewerAdmitted: () => true,
+    sourceConfined: () => true,
+    forks: { find: () => undefined, listForShare: () => [], allowsPrompt: () => ({ ok: true }) },
+    workspaces: () => [],
+    declaredCapabilities: () => declarations.declaredCapabilities(),
+  }
+  access.registerPolicy('share-viewer', createViewerAccessPolicy(facts))
+  return { ctx, select: (groups) => { selected = groups; access.invalidate() } }
+}
+
+/** One open `remoteAccess/follow` generation for a share reader. */
+async function follow(ctx: Context, principal: ShareViewerPrincipal): Promise<{
+  readonly next: () => Promise<RemoteAccessFrame>
+  readonly stop: () => Promise<void>
+}> {
+  const abort = new AbortController()
+  const stream = await ctx.typertGateway.stream({
+    peer: new Peer(ctx, { principal }), namespace: 'remoteAccess', method: 'follow', args: {}, signal: abort.signal,
+  })
+  const iterator = stream[Symbol.asyncIterator]()
+  return {
+    next: async () => {
+      const result = await iterator.next()
+      if (result.done === true) throw new Error('access stream ended')
+      return result.value as RemoteAccessFrame
+    },
+    stop: async () => {
+      abort.abort()
+      await iterator.return?.()
+    },
+  }
+}
+
+/** The next `count` frames of one open generation, in the order the Gateway delivers them. */
+async function frames(
+  guest: { next: () => Promise<RemoteAccessFrame> },
+  count: number,
+): Promise<readonly RemoteAccessFrame[]> {
+  const read: RemoteAccessFrame[] = []
+  for (let index = 0; index < count; index++) read.push(await guest.next())
+  return read
+}
+
+describe('viewer capabilities in an open access snapshot', () => {
+  it('pushes an upsert when a declared plugin appears and a remove when it withdraws', async () => {
+    const { ctx } = await snapshotFixture()
+    const guest = await follow(ctx, READER)
+    const baseline = await guest.next()
+    if (baseline.type !== 'baseline' || baseline.owner) throw new Error('expected a non-owner baseline frame')
+    expect(baseline.grants.flatMap(grant => [...grant.actions])).not.toContain(READABLE)
+
+    const plugin = mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+      viewerDeclarationsOf(pluginCtx)?.registerViewerReadable([READABLE])
+    })
+    await plugin
+    // The endpoint rides the global resource and the source Session, so both grants are recomputed.
+    for (const frame of await frames(guest, 2)) {
+      expect(frame).toMatchObject({ type: 'upsert' })
+      if (frame.type !== 'upsert') throw new Error('expected an upsert frame')
+      expect(frame.grant.actions).toContain(READABLE)
+    }
+
+    await plugin.dispose()
+    // Those resources stay granted by the policy's own reads, so withdrawing the offer is an upsert that
+    // no longer names the endpoint.
+    for (const frame of await frames(guest, 2)) {
+      expect(frame).toMatchObject({ type: 'upsert' })
+      if (frame.type !== 'upsert') throw new Error('expected an upsert frame')
+      expect(frame.grant.actions).not.toContain(READABLE)
+    }
+    await guest.stop()
+  })
+
+  it('pushes an upsert when the owner clears the selection that was exposing an endpoint', async () => {
+    const { ctx, select } = await snapshotFixture()
+    const guest = await follow(ctx, READER)
+    const baseline = await guest.next()
+    if (baseline.type !== 'baseline' || baseline.owner) throw new Error('expected a non-owner baseline frame')
+    expect(baseline.grants.flatMap(grant => [...grant.actions])).not.toContain(READABLE)
+
+    // The plugin's offer is what the owner's already stored selection was waiting for, so the endpoint
+    // is exposed from here on; the frames below are the ones the withdrawal below is compared against.
+    const plugin = mountDeclaringPlugin(ctx, DECLARER, PACKAGE, (pluginCtx) => {
+      viewerDeclarationsOf(pluginCtx)?.registerViewerReadable([READABLE])
+    })
+    await plugin
+    for (const frame of await frames(guest, 2)) {
+      expect(frame).toMatchObject({ type: 'upsert' })
+      if (frame.type !== 'upsert') throw new Error('expected an upsert frame')
+      expect(frame.grant.actions).toContain(READABLE)
+    }
+
+    // Clearing the selection is the owner's own withdrawal, and it reaches the open generation the same
+    // way a withdrawn declaration does: the next computed bindings no longer carry the endpoint.
+    select([])
+    for (const frame of await frames(guest, 2)) {
+      expect(frame).toMatchObject({ type: 'upsert' })
+      if (frame.type !== 'upsert') throw new Error('expected an upsert frame')
+      expect(frame.grant.actions).not.toContain(READABLE)
+    }
+    await guest.stop()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-dispatch.spec.ts b/packages/experimental/liveshare/tests/viewer-dispatch.spec.ts
new file mode 100644
index 0000000000..4c7f415480
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-dispatch.spec.ts
@@ -0,0 +1,948 @@
+/**
+ * Viewer request dispatch: how one forwarded request is classified and answered.
+ *
+ * The reader suites drive dispatch through the assembled reader. This suite pins the classification
+ * helpers and the refusals that depend on state changing around an await.
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import {
+  createViewerDispatch,
+  requestedAddressSession,
+  requestedBoundary,
+  requestedOperationId,
+  requestedRpcId,
+  requestedSessionId,
+} from '../src/host/viewer-dispatch.ts'
+import type { ViewerRequest } from '../src/viewer-channel.ts'
+
+const viewer: ShareRpcActor = { providerId: 'mock', tenantId: 'tenant', subjectId: 'alice' }
+const other: ShareRpcActor = { providerId: 'mock', tenantId: 'tenant', subjectId: 'bob' }
+const refused = { status: 403, body: { error: 'share-stopped' } }
+const unavailable = { status: 403, body: { error: 'source-write-unavailable' }, reason: 'source-write-unavailable' }
+
+afterEach(() => {
+  vi.unstubAllEnvs()
+  vi.useRealTimers()
+  vi.restoreAllMocks()
+})
+
+beforeEach(() => {
+  vi.spyOn(console, 'log').mockImplementation(() => {})
+  vi.spyOn(console, 'warn').mockImplementation(() => {})
+})
+
+describe('request classification helpers', () => {
+  it('reads an explicit operation id before the rpc id', () => {
+    expect(requestedOperationId({ payload: { args: { request: { operationId: 'op-1' } } } })).toBe('op-1')
+    expect(requestedOperationId({ rpcId: 'rpc-1' })).toBe('rpc:rpc-1')
+    expect(requestedOperationId({ rpcId: '' })).toBeUndefined()
+    expect(requestedOperationId('not an envelope')).toBeUndefined()
+  })
+
+  it('reads a correlation id only from a non-empty string', () => {
+    expect(requestedRpcId({ rpcId: 'rpc-1' })).toBe('rpc-1')
+    expect(requestedRpcId({ rpcId: '' })).toBeUndefined()
+    expect(requestedRpcId('not an envelope')).toBeUndefined()
+  })
+
+  it('reads a committed boundary only from a safe integer', () => {
+    expect(requestedBoundary({ payload: { args: { request: { atSeq: 12 } } } })).toBe(12)
+    expect(requestedBoundary({ payload: { args: { request: { atSeq: 1.5 } } } })).toBeUndefined()
+    expect(requestedBoundary('not an envelope')).toBeUndefined()
+  })
+
+  it('reads the Session one request names', () => {
+    expect(requestedSessionId({ payload: { args: { request: { sessionId: 'session-1' } } } })).toBe('session-1')
+    expect(requestedSessionId({ payload: { args: { request: { sessionId: '' } } } })).toBeUndefined()
+    expect(requestedSessionId({})).toBeUndefined()
+  })
+
+  it('reads an ordinary-session address only when the page addresses a Session', () => {
+    expect(requestedAddressSession({ address: { kind: 'session', sessionId: 'session-1' } })).toBe('session-1')
+    expect(requestedAddressSession({ address: { kind: 'other', sessionId: 'session-1' } })).toBeUndefined()
+    expect(requestedAddressSession({ address: { kind: 'session', sessionId: '' } })).toBeUndefined()
+    expect(requestedAddressSession('not an envelope')).toBeUndefined()
+  })
+})
+
+type Mock = ReturnType<typeof vi.fn>
+
+interface DepsStub {
+  connection?: { createSharedFetchHandler: Mock }
+  gateway?: { wireStream: { open: Mock; failure: Mock } }
+  sharedSessionId: Mock
+  forks?: { allowsPrompt: Mock }
+  prepareSource?: Mock
+  prepareSourceForReader?: Mock
+  prepareChild?: Mock
+  sourceRefusal?: Mock
+  sourceConfined?: Mock
+  debug?: boolean
+  readAsset?: Mock
+}
+
+interface Harness {
+  readonly dispatch: ReturnType<typeof createViewerDispatch>
+  readonly deps: DepsStub
+  readonly lifecycle: Record<string, Mock>
+  readonly fork: Record<string, Mock>
+  readonly gateway: {
+    open: Mock
+    failure: Mock
+  }
+  readonly handler: { fetch: Mock }
+  readonly streams: Map<string, Record<string, unknown>>
+  readonly openings: Map<string, Record<string, unknown>>
+}
+
+function harness(): Harness {
+  const streams = new Map<string, Record<string, unknown>>()
+  const openings = new Map<string, Record<string, unknown>>()
+  const handler = {
+    fetch: vi.fn(async () => new Response(JSON.stringify({ result: { ok: true, value: { ok: true } } }), {
+      status: 200, headers: { 'content-type': 'application/json' },
+    })),
+  }
+  const gateway = {
+    open: vi.fn(async (): Promise<unknown> => (async function* () {})()),
+    failure: vi.fn((error: unknown) => ({ code: String(error), message: String(error), details: {} })),
+  }
+  const deps = {
+    connection: { createSharedFetchHandler: vi.fn(() => handler) },
+    gateway: { wireStream: { open: gateway.open, failure: gateway.failure } },
+    sharedSessionId: vi.fn(() => 'session-1'),
+    forks: { allowsPrompt: vi.fn(() => ({ ok: true as const })) },
+    prepareSource: vi.fn(async () => {}),
+    prepareSourceForReader: vi.fn(),
+    prepareChild: vi.fn(async () => {}),
+    sourceRefusal: vi.fn(() => undefined),
+    sourceConfined: vi.fn(() => true),
+    debug: false,
+    readAsset: vi.fn(async () => ({
+      status: 200, body: { contentType: 'text/html', base64: Buffer.from('<html>\n<link rel="manifest" href="/m">\n</html>').toString('base64') },
+    })),
+  }
+  const lifecycle = {
+    peerFor: vi.fn(() => ({ scope: 'peer' })),
+    shareRefusal: vi.fn(() => undefined),
+    accessRefusal: vi.fn(() => undefined),
+    trustedState: vi.fn(() => undefined),
+    refreshAdmission: vi.fn(async () => {}),
+    beginCall: vi.fn(() => ({ call: true })),
+    endCall: vi.fn(),
+    streamOf: vi.fn((shareId: string, id: number) => streams.get(`${shareId}:${id}`)),
+    openingOf: vi.fn((shareId: string, id: number) => openings.get(`${shareId}:${id}`)),
+    reserveOpening: vi.fn((shareId: string, id: number, reservation: Record<string, unknown>) => { openings.set(`${shareId}:${id}`, reservation) }),
+    releaseOpening: vi.fn((shareId: string, id: number, reservation: Record<string, unknown>) => {
+      if (openings.get(`${shareId}:${id}`) !== reservation) return false
+      openings.delete(`${shareId}:${id}`)
+      return true
+    }),
+    registerStream: vi.fn((stream: Record<string, unknown>) => { streams.set(`${String(stream.shareId)}:${String(stream.id)}`, stream) }),
+    release: vi.fn((shareId: string, id: number) => { streams.delete(`${shareId}:${id}`) }),
+    streamIsCurrent: vi.fn(() => true),
+  }
+  const fork = {
+    answerFork: vi.fn(async () => ({ status: 200, body: { fork: true } })),
+    prepareColdChild: vi.fn(async () => ({ ok: true as const })),
+    annotateSessionList: vi.fn((answer: unknown) => answer),
+    lineageFor: vi.fn(() => undefined),
+    withLineageAnswer: vi.fn((answer: unknown) => answer),
+    withLineageFrames: vi.fn(() => (async function* () {})()),
+  }
+  const dispatch = createViewerDispatch({
+    deps, lifecycle, fork: () => fork,
+  } as never)
+  return { dispatch, deps, lifecycle, fork, gateway, handler, streams, openings }
+}
+
+const call = (path: string, body: unknown = {}): ViewerRequest => ({ op: 'call', path, body })
+const envelope = (sessionId: string): unknown => ({ payload: { args: { request: { sessionId } } } })
+
+function stream(id: number, overrides: Record<string, unknown> = {}): Record<string, unknown> {
+  return {
+    shareId: 'share-1', id, endpoint: 'session/follow', actor: viewer,
+    controller: new AbortController(), iterator: (async function* () {})(), pending: undefined, lastPolledAt: 0,
+    ...overrides,
+  }
+}
+
+describe('owner dispatch', () => {
+  it('answers an owner call through the shared fetch handler', async () => {
+    const h = harness()
+    await expect(h.dispatch.dispatchCall('/api/session/list', { a: 1 }, 'share-1', viewer)).resolves.toEqual({
+      status: 200, body: { result: { ok: true, value: { ok: true } } },
+    })
+    const request = h.handler.fetch.mock.calls[0]?.[0] as Request
+    expect(request.url).toBe('http://liveshare.internal/api/session/list')
+    expect(await request.text()).toBe('{"a":1}')
+    expect(h.handler.fetch.mock.calls[0]?.[1]).toEqual({ scope: 'peer' })
+  })
+
+  it('answers unavailable when the host has no Connection or Peer', async () => {
+    const h = harness()
+    h.deps.connection!.createSharedFetchHandler.mockReturnValue(undefined)
+    await expect(h.dispatch.dispatchCall('/api/session/list', {}, 'share-1', viewer))
+      .resolves.toEqual({ status: 503, body: { error: 'viewer-read-unavailable' } })
+
+    h.deps.connection!.createSharedFetchHandler.mockReturnValue(h.handler)
+    h.lifecycle.peerFor!.mockReturnValue(undefined)
+    await expect(h.dispatch.dispatchCall('/api/session/list', {}, 'share-1', viewer))
+      .resolves.toEqual({ status: 503, body: { error: 'viewer-read-unavailable' } })
+  })
+
+  it('reports an answer that is not JSON instead of failing the relay request', async () => {
+    const h = harness()
+    h.handler.fetch.mockResolvedValue(new Response('not json', { status: 200 }))
+    await expect(h.dispatch.dispatchCall('/api/session/list', {}, 'share-1', viewer))
+      .resolves.toEqual({ status: 200, body: { error: 'invalid-owner-response' } })
+  })
+
+  it('forwards the caller signal and refuses a call already aborted', async () => {
+    const h = harness()
+    const controller = new AbortController()
+    await h.dispatch.dispatchCall('/api/session/list', {}, 'share-1', viewer, controller.signal)
+    expect((h.handler.fetch.mock.calls[0]?.[0] as Request).signal).toBeDefined()
+
+    controller.abort(new Error('cancelled'))
+    await expect(h.dispatch.dispatchCall('/api/session/list', {}, 'share-1', viewer, controller.signal))
+      .rejects.toThrow('cancelled')
+  })
+})
+
+describe('ordinary viewer calls', () => {
+  it('dispatches a list call and annotates the reader branches', async () => {
+    const h = harness()
+    await expect(h.dispatch.answer('share-1', call('/api/session/list'), viewer)).resolves.toMatchObject({ status: 200 })
+    expect(h.fork.annotateSessionList).toHaveBeenCalledWith(expect.objectContaining({ status: 200 }), 'share-1', viewer)
+  })
+
+  it('answers a share that no longer exists before dispatch', async () => {
+    const h = harness()
+    h.deps.sharedSessionId.mockReturnValue(undefined)
+    await expect(h.dispatch.answer('share-1', call('/api/session/list'), viewer))
+      .resolves.toEqual({ status: 404, body: { error: 'share-not-found' } })
+    expect(h.handler.fetch).not.toHaveBeenCalled()
+  })
+
+  it('refuses before and after the owner dispatch', async () => {
+    const h = harness()
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', call('/api/session/list'), viewer)).resolves.toEqual(refused)
+    expect(h.handler.fetch).not.toHaveBeenCalled()
+
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(undefined).mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', call('/api/session/list'), viewer)).resolves.toEqual(refused)
+    expect(h.handler.fetch).toHaveBeenCalledTimes(1)
+  })
+
+  it('classifies a normalized fork path and forwards it to fork orchestration', async () => {
+    const h = harness()
+    await expect(h.dispatch.answer('share-1', call('/api/session/./fork?x=1'), viewer))
+      .resolves.toEqual({ status: 200, body: { fork: true } })
+    expect(h.fork.answerFork).toHaveBeenCalledWith('share-1', '/api/session/fork?x=1', {}, viewer, expect.any(AbortSignal))
+  })
+
+  it('dispatches a path the page base cannot resolve and a path outside the api', async () => {
+    const h = harness()
+    await h.dispatch.answer('share-1', call('http://[::1'), viewer)
+    await h.dispatch.answer('share-1', call('/api/session/./list?x=1'), viewer)
+    await h.dispatch.answer('share-1', call('session/list'), viewer)
+    // One normalized target is both classified and forwarded: a dot segment and its query survive nothing,
+    // while a target the base cannot parse is forwarded exactly as received.
+    expect((h.handler.fetch.mock.calls[0]?.[0] as Request).url).toBe('http://liveshare.internalhttp//[::1')
+    expect((h.handler.fetch.mock.calls[1]?.[0] as Request).url).toBe('http://liveshare.internal/api/session/list?x=1')
+    expect((h.handler.fetch.mock.calls[2]?.[0] as Request).url).toBe('http://liveshare.internal/session/list')
+    expect(h.handler.fetch).toHaveBeenCalledTimes(3)
+  })
+
+  it('adds branch facts to a page that names a Session', async () => {
+    const h = harness()
+    const lineage = { branch: true }
+    h.fork.lineageFor!.mockReturnValue(lineage)
+    h.fork.withLineageAnswer!.mockReturnValue({ status: 200, body: { annotated: true } })
+    await expect(h.dispatch.answer('share-1', call('/api/session/page', { address: { kind: 'session', sessionId: 'child-1' } }), viewer))
+      .resolves.toEqual({ status: 200, body: { annotated: true } })
+    expect(h.fork.lineageFor).toHaveBeenCalledWith('share-1', 'child-1', viewer)
+    expect(h.fork.withLineageAnswer)
+      .toHaveBeenCalledWith(expect.objectContaining({ status: 200 }), lineage)
+
+    h.fork.lineageFor!.mockReturnValue(undefined)
+    await h.dispatch.answer('share-1', call('/api/session/page', {}), viewer)
+    expect(h.fork.lineageFor).toHaveBeenCalledTimes(1)
+  })
+})
+
+describe('source Session writes', () => {
+  it('refuses a source write when the share is gone or its state refuses', async () => {
+    const h = harness()
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toMatchObject({ status: 200 })
+    expect(h.deps.prepareSource).not.toHaveBeenCalled()
+
+    // The share is read once to classify the request and again when the source path resolves it.
+    h.deps.sharedSessionId.mockReturnValueOnce('session-1').mockReturnValueOnce(undefined)
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toEqual({ status: 403, body: { error: 'share-not-found' } })
+
+    h.deps.sharedSessionId.mockReturnValue('session-1')
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toEqual(refused)
+  })
+
+  it('returns a policy refusal that is not about the missing layer', async () => {
+    const h = harness()
+    h.lifecycle.accessRefusal!.mockReturnValue({ status: 403, body: { error: 'not-writable' }, reason: 'not-writable' })
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toMatchObject({ body: { error: 'not-writable' } })
+    expect(h.deps.prepareSource).not.toHaveBeenCalled()
+  })
+
+  it('prepares a cold source Session and dispatches once the layer is installed', async () => {
+    const h = harness()
+    h.lifecycle.accessRefusal!
+      .mockReturnValueOnce(unavailable)
+      .mockReturnValueOnce(undefined)
+      .mockReturnValueOnce(undefined)
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toMatchObject({ status: 200 })
+    expect(h.deps.prepareSource).toHaveBeenCalledWith('session-1')
+    expect(h.handler.fetch).toHaveBeenCalledTimes(1)
+  })
+
+  it('reports a preparation that failed and still left no usable layer', async () => {
+    const h = harness()
+    h.deps.prepareSource!.mockRejectedValue(new Error('boom'))
+    h.deps.sourceRefusal!.mockReturnValue('operator-confined')
+    h.lifecycle.accessRefusal!
+      .mockReturnValueOnce(unavailable)
+      .mockReturnValueOnce(unavailable)
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toEqual({
+        status: 403,
+        // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+        body: expect.objectContaining({ error: 'source-write-unavailable', prepared: false, session: 'known', reason: 'operator-confined' }),
+      })
+    expect(h.handler.fetch).not.toHaveBeenCalled()
+  })
+
+  it('omits the reason when the host recorded none for a failed preparation', async () => {
+    const h = harness()
+    h.deps.prepareSource!.mockRejectedValue(new Error('boom'))
+    h.deps.sourceRefusal!.mockReturnValue(undefined)
+    h.lifecycle.accessRefusal!.mockReturnValueOnce(unavailable).mockReturnValueOnce(unavailable)
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+      .resolves.toEqual(expect.objectContaining({ body: expect.not.objectContaining({ reason: expect.anything() }) }))
+  })
+
+  it('returns the layer refusal found after preparation', async () => {
+    const h = harness()
+    const after = { status: 403, body: { error: 'other' }, reason: 'other' }
+    h.lifecycle.accessRefusal!
+      .mockReturnValueOnce(unavailable)
+      .mockReturnValueOnce(after)
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toEqual(after)
+  })
+
+  it('refuses a write whose share state ended during preparation or dispatch', async () => {
+    const h = harness()
+    h.lifecycle.accessRefusal!.mockReturnValueOnce(unavailable).mockReturnValueOnce(undefined).mockReturnValueOnce(undefined)
+    h.lifecycle.shareRefusal!
+      .mockReturnValueOnce(undefined) // before
+      .mockReturnValueOnce(refused) // after preparation
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toEqual(refused)
+
+    h.lifecycle.shareRefusal!.mockReset()
+    h.lifecycle.accessRefusal!.mockReset()
+    h.lifecycle.accessRefusal!.mockReturnValue(undefined)
+    h.lifecycle.trustedState!.mockReturnValue(refused)
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toEqual(refused)
+  })
+
+  it('rejects a write whose layer disappears while the owner answers', async () => {
+    const h = harness()
+    h.lifecycle.accessRefusal!
+      .mockReturnValueOnce(unavailable) // before
+      .mockReturnValueOnce(undefined) // after preparation
+      .mockReturnValueOnce(unavailable) // after dispatch
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toMatchObject({
+        status: 403,
+        // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+        body: { error: 'source-write-unavailable', message: expect.stringContaining('stopped being confined') },
+      })
+  })
+
+  it('uses the post-dispatch refusal when the share stopped while the owner answered', async () => {
+    const h = harness()
+    h.lifecycle.shareRefusal!
+      .mockReturnValueOnce(undefined) // after preparation
+      .mockReturnValueOnce(refused) // after dispatch
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('session-1')), viewer))
+      .resolves.toEqual(refused)
+  })
+})
+
+describe('source Session cancels', () => {
+  it('dispatches the cancel to the owner’s Gateway under the source-write rule', async () => {
+    const h = harness()
+
+    await expect(h.dispatch.answer('share-1', call('/api/session/cancel', envelope('session-1')), viewer))
+      .resolves.toEqual({ status: 200, body: { result: { ok: true, value: { ok: true } } } })
+
+    const request = h.handler.fetch.mock.calls[0]?.[0] as Request
+    expect(request.url).toBe('http://liveshare.internal/api/session/cancel')
+    // The policy decides the concrete call here exactly as it does for a prompt, and the Gateway decides it
+    // again when it is dispatched; nothing in this host compares a turn's requester.
+    expect(h.lifecycle.accessRefusal).toHaveBeenCalledWith('share-1', viewer, 'session/cancel', 'session-1', true)
+    expect(h.lifecycle.trustedState).toHaveBeenCalledWith('share-1', viewer, 'session/cancel', 'session-1')
+  })
+
+  it('refuses a cancel whose share state ended before or during admission refresh', async () => {
+    const h = harness()
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', call('/api/session/cancel', envelope('session-1')), viewer))
+      .resolves.toEqual(refused)
+    expect(h.handler.fetch).not.toHaveBeenCalled()
+
+    h.lifecycle.trustedState!.mockReturnValue(refused)
+    await expect(h.dispatch.answer('share-1', call('/api/session/cancel', envelope('session-1')), viewer))
+      .resolves.toEqual(refused)
+    expect(h.handler.fetch).not.toHaveBeenCalled()
+  })
+
+  it('answers unavailable when the host cannot dispatch the cancel', async () => {
+    const h = harness()
+    h.deps.connection!.createSharedFetchHandler.mockReturnValue(undefined)
+    await expect(h.dispatch.answer('share-1', call('/api/session/cancel', envelope('session-1')), viewer))
+      .resolves.toEqual({ status: 503, body: { error: 'viewer-read-unavailable' } })
+  })
+})
+
+describe('viewer child writes', () => {
+  it('dispatches a prompt that names no Session', async () => {
+    const h = harness()
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('child-1')), viewer))
+      .resolves.toMatchObject({ status: 200 })
+    expect(h.deps.forks?.allowsPrompt).toHaveBeenCalledWith('child-1', viewer)
+  })
+
+  it('dispatches a child write body that names no Session and a child cancel', async () => {
+    const h = harness()
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', {}), viewer))
+      .resolves.toMatchObject({ status: 200 })
+    await expect(h.dispatch.answer('share-1', call('/api/session/cancel', envelope('child-1')), viewer))
+      .resolves.toMatchObject({ status: 200 })
+    expect(h.handler.fetch).toHaveBeenCalledTimes(2)
+    expect(h.deps.forks?.allowsPrompt).not.toHaveBeenCalled()
+  })
+
+  it('refuses a child write on a stopped share or a policy refusal', async () => {
+    const h = harness()
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('child-1')), viewer)).resolves.toEqual(refused)
+
+    h.lifecycle.accessRefusal!.mockReturnValueOnce({ status: 403, body: { error: 'not-a-fork' }, reason: 'not-a-fork' })
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('child-1')), viewer))
+      .resolves.toMatchObject({ body: { error: 'not-a-fork' } })
+  })
+
+  it('prepares a cold child whose limit is missing, then dispatches it', async () => {
+    const h = harness()
+    h.deps.forks!.allowsPrompt.mockReturnValue({ ok: false, code: 'fork-ceiling-uninstalled', message: 'cold' })
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('child-1')), viewer))
+      .resolves.toMatchObject({ status: 200 })
+    expect(h.deps.prepareChild).toBeDefined()
+    expect(h.fork.prepareColdChild).toHaveBeenCalledWith('child-1', viewer, { ok: false, code: 'fork-ceiling-uninstalled', message: 'cold' })
+  })
+
+  it('refuses a child whose preparation was refused or whose share state changed', async () => {
+    const h = harness()
+    h.deps.forks!.allowsPrompt.mockReturnValue({ ok: false, code: 'fork-ceiling-uninstalled', message: 'cold' })
+    h.fork.prepareColdChild!.mockResolvedValue({ ok: false, code: 'fork-limit-unavailable', message: 'no limit' })
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('child-1')), viewer))
+      .resolves.toEqual({ status: 403, body: { error: 'fork-limit-unavailable', message: 'no limit' } })
+
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(undefined).mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('child-1')), viewer))
+      .resolves.toEqual(refused)
+  })
+
+  it('refuses a child whose access changed while preparation ran', async () => {
+    const h = harness()
+    h.lifecycle.accessRefusal!
+      .mockReturnValueOnce(undefined) // snapshot
+      .mockReturnValueOnce({ status: 403, body: { error: 'viewer-not-authorized' }, reason: 'viewer-not-authorized' })
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('child-1')), viewer))
+      .resolves.toMatchObject({ body: { error: 'viewer-not-authorized' } })
+  })
+
+  it('falls back to the policy refusal for a host without a fork registry', async () => {
+    const h = harness()
+    delete h.deps.forks
+    delete h.deps.prepareChild
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('child-1')), viewer))
+      .resolves.toEqual({ status: 403, body: { error: 'fork-ceiling-uninstalled', message: 'this host has no fork registry' } })
+  })
+
+  it('refuses at the last admission check before dispatch', async () => {
+    const h = harness()
+    h.lifecycle.accessRefusal!
+      .mockReturnValueOnce(undefined) // snapshot
+      .mockReturnValueOnce(undefined) // racing check uses accessRefusal once more
+      .mockReturnValueOnce({ status: 403, body: { error: 'share-stopped' }, reason: 'share-stopped' })
+    await expect(h.dispatch.answer('share-1', call('/api/session/prompt', envelope('child-1')), viewer))
+      .resolves.toMatchObject({ body: { error: 'share-stopped' } })
+  })
+})
+
+describe('viewer streams', () => {
+  it('refuses an open for a missing share, a refusing share, or no gateway', async () => {
+    const h = harness()
+    h.deps.sharedSessionId.mockReturnValue(undefined)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow', payload: {} }, viewer))
+      .resolves.toEqual({ status: 404, body: { error: 'share-not-found' } })
+
+    h.deps.sharedSessionId.mockReturnValue('session-1')
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow', payload: {} }, viewer))
+      .resolves.toEqual(refused)
+
+    delete h.deps.gateway
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow', payload: {} }, viewer))
+      .resolves.toEqual({ status: 503, body: { error: 'viewer-read-unavailable' } })
+  })
+
+  it('refuses a stream id held by another viewer', async () => {
+    const h = harness()
+    h.streams.set('share-1:1', stream(1, { actor: other }))
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow', payload: {} }, viewer))
+      .resolves.toMatchObject({ status: 403, body: { ok: false, error: { code: 'liveshare/read-only' } } })
+
+    h.streams.clear()
+    h.openings.set('share-1:1', { shareId: 'share-1', actor: other, controller: new AbortController() })
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow', payload: {} }, viewer))
+      .resolves.toMatchObject({ status: 403, body: { ok: false, error: { code: 'liveshare/read-only' } } })
+
+    // The same viewer re-opening its own id replaces the stream, and says so.
+    h.openings.clear()
+    h.streams.set('share-1:1', stream(1))
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/control', payload: {} }, viewer))
+      .resolves.toEqual({ status: 200, body: { opened: true } })
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('viewer stream replaced'))
+  })
+
+  it('refuses an open for a viewer without a Peer', async () => {
+    const h = harness()
+    h.lifecycle.peerFor!.mockReturnValue(undefined)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow', payload: {} }, viewer))
+      .resolves.toEqual({ status: 503, body: { error: 'viewer-read-unavailable' } })
+  })
+
+  it('registers a follow stream with branch frames', async () => {
+    const h = harness()
+    h.fork.withLineageFrames!.mockImplementation((
+      _values: unknown, _endpoint: string, _requested: string | undefined, lineageOf: (id: string) => unknown,
+    ) => {
+      lineageOf('child-1')
+      return (async function* () { yield { frame: 1 } })()
+    })
+    await expect(h.dispatch.answer('share-1', {
+      op: 'stream-open', id: 1, endpoint: 'session/follow', payload: { address: { kind: 'session', sessionId: 'child-1' } },
+    }, viewer)).resolves.toEqual({ status: 200, body: { opened: true } })
+    expect(h.fork.withLineageFrames).toHaveBeenCalledWith(
+      expect.anything(), 'session/follow', 'child-1', expect.any(Function),
+    )
+    expect(h.streams.get('share-1:1')).toMatchObject({ endpoint: 'session/follow', actor: viewer })
+  })
+
+  it('relays a non-follow stream with its own iterator', async () => {
+    const h = harness()
+    h.gateway.open.mockResolvedValue((async function* () { yield 1 })())
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 6, endpoint: 'session/events', payload: {} }, viewer))
+      .resolves.toEqual({ status: 200, body: { opened: true } })
+    expect(h.fork.withLineageFrames).not.toHaveBeenCalled()
+  })
+
+  it('describes each stream cause shape without payload data', async () => {
+    const h = harness()
+    const aborted = Object.assign(new Error('stopped'), { name: 'AbortError' })
+    for (const cause of [aborted, { code: 'E_LIMIT', message: 'too large' }, { code: 'E_ONLY' }, { message: 'message only' }, 7]) {
+      h.gateway.open.mockRejectedValue(cause)
+      await h.dispatch.answer('share-1', { op: 'stream-open', id: 10, endpoint: 'session/control', payload: {} }, viewer)
+    }
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('AbortError: stopped (aborted)'))
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('E_LIMIT: too large'))
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('E_ONLY'))
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('object: message only'))
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('number'))
+  })
+
+  it('reports a stream that failed to open and logs a debug open', async () => {
+    const h = harness()
+    h.gateway.open.mockRejectedValue(new Error('open failed'))
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/control', payload: {} }, viewer))
+      .resolves.toEqual({ status: 200, body: { failure: { code: 'Error: open failed', message: 'Error: open failed', details: {} } } })
+
+    vi.stubEnv('LIVESHARE_DEBUG_READS', '1')
+    h.gateway.open.mockResolvedValue((async function* () {})())
+    await h.dispatch.answer('share-1', { op: 'stream-open', id: 2, endpoint: 'session/control', payload: {} }, viewer)
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('viewer stream open share=share-1'))
+  })
+
+  it('cancels an opening whose caller aborted and releases the opened iterator', async () => {
+    const h = harness()
+    const controller = new AbortController()
+    const returned = vi.fn(async () => ({ done: true, value: undefined }))
+    // oxlint-disable-next-line typescript/no-misused-promises -- typed test doubles and mock calls.
+    h.gateway.open.mockImplementation(async () => {
+      controller.abort(new Error('viewer left'))
+      return { [Symbol.asyncIterator]: () => ({ next: async () => ({ done: false, value: 1 }), return: returned }) }
+    })
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 3, endpoint: 'session/follow', payload: {} }, viewer, controller.signal))
+      .rejects.toThrow('viewer left')
+    expect(returned).toHaveBeenCalled()
+  })
+
+  it('refuses a share that stopped while a failed open was in flight', async () => {
+    const h = harness()
+    h.gateway.open.mockRejectedValue(new Error('open failed'))
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(undefined).mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 7, endpoint: 'session/follow', payload: {} }, viewer))
+      .resolves.toEqual(refused)
+  })
+
+  it('releases an opened iterator without a return method, or whose return rejects', async () => {
+    const h = harness()
+    const controller = new AbortController()
+    // oxlint-disable-next-line typescript/no-misused-promises -- typed test doubles and mock calls.
+    h.gateway.open.mockImplementation(async () => {
+      controller.abort(new Error('left'))
+      return { [Symbol.asyncIterator]: () => ({ next: async () => ({ done: false, value: 1 }) }) }
+    })
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 8, endpoint: 'session/follow', payload: {} }, viewer, controller.signal))
+      .rejects.toThrow('left')
+
+    const rejectController = new AbortController()
+    // oxlint-disable-next-line typescript/no-misused-promises -- typed test doubles and mock calls.
+    h.gateway.open.mockImplementation(async () => {
+      rejectController.abort(new Error('left again'))
+      return {
+        [Symbol.asyncIterator]: () => ({
+          next: async () => ({ done: false, value: 1 }),
+          return: async () => { throw new Error('return failed') },
+        }),
+      }
+    })
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 9, endpoint: 'session/follow', payload: {} }, viewer, rejectController.signal))
+      .rejects.toThrow('left again')
+  })
+
+  it('aborts before the open when the caller already left, even without a stream to release', async () => {
+    const h = harness()
+    h.gateway.open.mockRejectedValue(new Error('open failed'))
+    const controller = new AbortController()
+    controller.abort(new Error('already left'))
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 5, endpoint: 'session/follow', payload: {} }, viewer, controller.signal))
+      .rejects.toThrow('already left')
+  })
+
+  it('answers a share that stopped while its stream opened', async () => {
+    const h = harness()
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(undefined).mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-open', id: 4, endpoint: 'session/follow', payload: {} }, viewer))
+      .resolves.toEqual(refused)
+  })
+
+  it('answers a missing stream, a stream of another viewer, and a refused share', async () => {
+    vi.stubEnv('LIVESHARE_DEBUG_READS', '1')
+    const h = harness()
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 9 }, viewer))
+      .resolves.toEqual({ status: 404, body: { error: 'stream-not-found' } })
+
+    h.streams.set('share-1:1', stream(1, { actor: other }))
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 1 }, viewer))
+      .resolves.toMatchObject({ status: 403, body: { error: { code: 'liveshare/read-only' } } })
+
+    h.streams.set('share-1:2', stream(2))
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 2 }, viewer))
+      .resolves.toEqual(refused)
+    expect(h.streams.has('share-1:2')).toBe(false)
+  })
+
+  it('releases a stream whose share stopped before the poll and accepts a caller signal', async () => {
+    const h = harness()
+    h.streams.set('share-1:1', stream(1))
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(undefined).mockReturnValueOnce(refused)
+    const controller = new AbortController()
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 1 }, viewer, controller.signal))
+      .resolves.toEqual(refused)
+    expect(h.streams.has('share-1:1')).toBe(false)
+  })
+
+  it('polls with the caller signal combined with the stream signal', async () => {
+    const h = harness()
+    const values = ['v']
+    const yielding = stream(1)
+    yielding.iterator = {
+      next: async () => values.length === 0 ? { done: true, value: undefined } : { done: false, value: values.shift() },
+    }
+    h.streams.set('share-1:1', yielding)
+    const controller = new AbortController()
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 1 }, viewer, controller.signal))
+      .resolves.toEqual({ status: 200, body: { values: ['v'] } })
+  })
+
+  it('answers a failure, an end, and a value batch', async () => {
+    const h = harness()
+    const failing = stream(2)
+    failing.iterator = { next: async () => { throw new Error('stream failed') } }
+    h.streams.set('share-1:2', failing)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 2 }, viewer))
+      .resolves.toMatchObject({ status: 200, body: { failure: { code: 'Error: stream failed' } } })
+    expect(h.streams.has('share-1:2')).toBe(false)
+
+    const ending = stream(3)
+    ending.iterator = { next: async () => ({ done: true, value: undefined }) }
+    h.streams.set('share-1:3', ending)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 3 }, viewer))
+      .resolves.toEqual({ status: 200, body: { end: true } })
+    expect(h.streams.has('share-1:3')).toBe(false)
+
+    const values = ['a', 'b']
+    const yielding = stream(4)
+    yielding.iterator = {
+      next: async () => values.length === 0 ? { done: true, value: undefined } : { done: false, value: values.shift() },
+    }
+    h.streams.set('share-1:4', yielding)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 4 }, viewer))
+      .resolves.toEqual({ status: 200, body: { values: ['a', 'b'] } })
+  })
+
+  it('returns a refusal without releasing an id another stream now owns', async () => {
+    const h = harness()
+    const original = stream(1)
+    const replacement = stream(1)
+    h.streams.set('share-1:1', original)
+    h.lifecycle.streamOf!
+      .mockReturnValueOnce(original)
+      .mockReturnValueOnce(replacement)
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 1 }, viewer)).resolves.toEqual(refused)
+    expect(h.lifecycle.release).not.toHaveBeenCalled()
+  })
+
+  it('stops a batch whose stream was replaced after the drain', async () => {
+    const h = harness()
+    const values = ['a']
+    const yielding = stream(1)
+    yielding.iterator = {
+      next: async () => values.length === 0 ? { done: true, value: undefined } : { done: false, value: values.shift() },
+    }
+    h.streams.set('share-1:1', yielding)
+    h.lifecycle.streamIsCurrent!.mockReturnValueOnce(true).mockReturnValueOnce(false)
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 1 }, viewer))
+      .resolves.toEqual({ status: 404, body: { error: 'stream-not-found' } })
+  })
+
+  it('rejects a poll whose caller aborted while the iterator was pending', async () => {
+    const h = harness()
+    h.streams.set('share-1:1', stream(1, { pending: new Promise<IteratorResult<unknown>>(() => {}) }))
+    const controller = new AbortController()
+    const answer = h.dispatch.answer('share-1', { op: 'stream-next', id: 1 }, viewer, controller.signal)
+    await Promise.resolve()
+    await Promise.resolve()
+    controller.abort(new Error('gone'))
+    await expect(answer).rejects.toThrow('Viewer request cancelled')
+  })
+
+  it('bounds a batch at the stream batch maximum', async () => {
+    const h = harness()
+    const endless = stream(1)
+    endless.iterator = { next: async () => ({ done: false, value: 'v' }) }
+    h.streams.set('share-1:1', endless)
+    const answer = await h.dispatch.answer('share-1', { op: 'stream-next', id: 1 }, viewer)
+    expect((answer.body as { values: unknown[] }).values).toHaveLength(64)
+  })
+
+  it('reports a poll that answered late and one whose stream was replaced', async () => {
+    const h = harness()
+    let clock = 0
+    // Every reading advances past the late threshold; the pair around the poll is adjacent.
+    vi.spyOn(Date, 'now').mockImplementation(() => { clock += 13_000; return clock })
+    h.streams.set('share-1:1', stream(1, { pending: Promise.resolve({ done: false, value: 'a' }) }))
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 1 }, viewer))
+      .resolves.toEqual({ status: 200, body: { values: ['a'] } })
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('viewer stream poll late'))
+
+    h.lifecycle.streamIsCurrent!.mockReturnValueOnce(false)
+    h.streams.set('share-1:2', stream(2))
+    await expect(h.dispatch.answer('share-1', { op: 'stream-next', id: 2 }, viewer))
+      .resolves.toEqual({ status: 404, body: { error: 'stream-not-found' } })
+  })
+
+  it('releases an opening reservation by cancel and logs a debug cancel', async () => {
+    vi.stubEnv('LIVESHARE_DEBUG_READS', '1')
+    const h = harness()
+    h.openings.set('share-1:1', { shareId: 'share-1', actor: viewer, controller: new AbortController() })
+    await expect(h.dispatch.answer('share-1', { op: 'stream-cancel', id: 1 }, viewer))
+      .resolves.toEqual({ status: 200, body: { cancelled: true } })
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('viewer stream cancel share=share-1'))
+  })
+
+  it('releases a stream on cancel, refusing another viewer', async () => {
+    const h = harness()
+    h.streams.set('share-1:1', stream(1, { actor: other }))
+    await expect(h.dispatch.answer('share-1', { op: 'stream-cancel', id: 1 }, viewer))
+      .resolves.toMatchObject({ status: 403 })
+
+    h.streams.set('share-1:2', stream(2))
+    await expect(h.dispatch.answer('share-1', { op: 'stream-cancel', id: 2 }, viewer))
+      .resolves.toEqual({ status: 200, body: { cancelled: true } })
+    expect(h.streams.has('share-1:2')).toBe(false)
+  })
+
+  it('aborts an in-flight call when the caller leaves', async () => {
+    const h = harness()
+    // oxlint-disable-next-line typescript/no-misused-promises -- typed test doubles and mock calls.
+    h.handler.fetch.mockImplementation(async (request: Request) => {
+      await new Promise<void>((resolve) => { request.signal.addEventListener('abort', () => { resolve() }) })
+      return new Response(JSON.stringify({ ok: true }), { status: 200 })
+    })
+    const controller = new AbortController()
+    const pending = h.dispatch.answer('share-1', call('/api/session/list'), viewer, controller.signal)
+    controller.abort(new Error('left'))
+    await expect(pending).rejects.toThrow('left')
+    expect(h.lifecycle.beginCall).toHaveBeenCalled()
+    expect(h.lifecycle.endCall).toHaveBeenCalled()
+  })
+})
+
+describe('page assets', () => {
+  it('serves the document without the manifest link and logs debug reads', async () => {
+    const h = harness()
+    h.deps.debug = true
+    const answer = await h.dispatch.answer('share-1', { op: 'asset', path: '' }, viewer)
+    expect(answer.status).toBe(200)
+    const body = (answer.body as { base64: string }).base64
+    expect(Buffer.from(body, 'base64').toString('utf8')).not.toContain('rel="manifest"')
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('viewer asset share=share-1'))
+  })
+
+  it('leaves a non-200 document answer unchanged', async () => {
+    const h = harness()
+    const answer = { status: 500, body: { error: 'read-failed' } }
+    h.deps.readAsset!.mockResolvedValue(answer)
+    await expect(h.dispatch.answer('share-1', { op: 'asset', path: '' }, viewer)).resolves.toBe(answer)
+  })
+
+  it('leaves a document without a manifest link unchanged', async () => {
+    const h = harness()
+    const bytes = Buffer.from('<html>\n</html>').toString('base64')
+    h.deps.readAsset!.mockResolvedValue({ status: 200, body: { contentType: 'text/html', base64: bytes } })
+    await expect(h.dispatch.answer('share-1', { op: 'asset', path: '' }, viewer))
+      .resolves.toEqual({ status: 200, body: { contentType: 'text/html', base64: bytes } })
+  })
+
+  it('refuses an asset path the page does not serve', async () => {
+    const h = harness()
+    for (const path of ['assets/app.js.map', 'other.txt', 'assets/app.js%2Emap']) {
+      await expect(h.dispatch.answer('share-1', { op: 'asset', path }, viewer))
+        .resolves.toEqual({ status: 404, body: { error: 'asset-not-found' } })
+    }
+    await expect(h.dispatch.answer('share-1', { op: 'asset', path: 'assets/app.js%ZZ' }, viewer))
+      .resolves.toMatchObject({ status: 200 })
+  })
+
+  it('serves a top-level file and a source-map query without admitting the map', async () => {
+    const h = harness()
+    h.deps.readAsset!.mockResolvedValue({ status: 200, body: { contentType: 'image/svg+xml', base64: '' } })
+    await h.dispatch.answer('share-1', { op: 'asset', path: 'favicon.svg?v=1' }, viewer)
+    await h.dispatch.answer('share-1', { op: 'asset', path: 'assets/app.js.map&rev=1' }, viewer)
+    expect(h.deps.readAsset).toHaveBeenCalledTimes(1)
+  })
+
+  it('measures each served body shape for the debug byte count', async () => {
+    const h = harness()
+    h.deps.debug = true
+    for (const body of [
+      'not an asset at all',
+      { error: 'not an asset' },
+      { contentType: 'text/plain' },
+      { contentType: 'text/plain', base64: 'AAAA==' },
+      { contentType: 'text/plain', base64: 'AAA=' },
+      { contentType: 'text/plain', base64: 'AAAA' },
+    ]) {
+      h.deps.readAsset!.mockResolvedValue({ status: 200, body })
+      await h.dispatch.answer('share-1', { op: 'asset', path: 'index.html' }, viewer)
+    }
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('bytes=3'))
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('bytes=2'))
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('bytes=undefined'))
+  })
+
+  it('answers unavailable without an asset reader or Peer, and refuses a stopped share', async () => {
+    const h = harness()
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await expect(h.dispatch.answer('share-1', { op: 'asset', path: '' }, viewer)).resolves.toEqual(refused)
+
+    delete h.deps.readAsset
+    await expect(h.dispatch.answer('share-1', { op: 'asset', path: '' }, viewer))
+      .resolves.toEqual({ status: 503, body: { error: 'viewer-page-unavailable' } })
+
+    h.deps.readAsset = vi.fn(async () => ({ status: 200, body: { contentType: 'text/html', base64: '' } })) as never
+    h.lifecycle.peerFor!.mockReturnValue(undefined)
+    await expect(h.dispatch.answer('share-1', { op: 'asset', path: '' }, viewer))
+      .resolves.toEqual({ status: 503, body: { error: 'viewer-page-unavailable' } })
+  })
+
+  it('logs a debug call and a debug stream open', async () => {
+    const h = harness()
+    h.deps.debug = true
+    await h.dispatch.answer('share-1', call('/api/session/list'), viewer)
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('viewer read share=share-1'))
+    await h.dispatch.answer('share-1', { op: 'stream-open', id: 9, endpoint: 'session/control', payload: {} }, viewer)
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('viewer stream open share=share-1'))
+  })
+
+  it('logs a refused debug read and rejects an unknown operation loudly', async () => {
+    const h = harness()
+    h.deps.debug = true
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await h.dispatch.answer('share-1', { op: 'asset', path: '' }, viewer)
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('viewer read refused share=share-1'))
+
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await h.dispatch.answer('share-1', { op: 'stream-open', id: 3, endpoint: 'session/follow', payload: {} }, viewer)
+    h.lifecycle.shareRefusal!.mockReturnValueOnce(refused)
+    await h.dispatch.answer('share-1', { op: 'stream-next', id: 4 }, viewer)
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('target=session/follow'))
+    expect(console.log).toHaveBeenCalledWith(expect.stringContaining('target=4'))
+
+    await expect(h.dispatch.answer('share-1', { op: 'bogus' } as never, viewer))
+      .rejects.toThrow('unhandled viewer request')
+  })
+})
+
+describe('stream polling bounds', () => {
+  it('holds a pending pull for its window', async () => {
+    vi.useFakeTimers()
+    try {
+      const h = harness()
+      h.streams.set('share-1:1', stream(1, { pending: new Promise<IteratorResult<unknown>>(() => {}) }))
+      const answer = h.dispatch.answer('share-1', { op: 'stream-next', id: 1 }, viewer)
+      await vi.advanceTimersByTimeAsync(10_000)
+      await expect(answer).resolves.toEqual({ status: 200, body: { pending: true } })
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-endpoint-fixture.ts b/packages/experimental/liveshare/tests/viewer-endpoint-fixture.ts
new file mode 100644
index 0000000000..b510fcc741
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-endpoint-fixture.ts
@@ -0,0 +1,73 @@
+/**
+ * Host endpoint definitions and Loader entry names for cases that exercise the viewer declaration surface.
+ *
+ * A declaration is accepted only for a live Host endpoint owned by the declaring plugin's package, so a case
+ * needs both: generated invocations for that package, and the entry name the Loader installs on the
+ * declaring fiber before the plugin body runs. The Loader owns that field; these helpers install the same
+ * values a real Loader composition would, without booting a config tree.
+ */
+import type { Context, Fiber, Inject } from '@deepseek-ai/cordis'
+import type { TypertContribution } from '@deepseek-ai/dsh-typert-registry'
+import { z } from 'zod'
+
+/**
+ * One generated Host contribution whose invocations are the endpoints `packageName` owns.
+ * @param packageName - Package that compiled the endpoints.
+ * @param endpoints - Endpoint names, each `<namespace>/<method>`.
+ * @returns Contribution holding one direct invocation per endpoint, with the generated `<package>#<endpoint>` id.
+ */
+export function endpointContribution(packageName: string, endpoints: readonly string[]): TypertContribution {
+  return {
+    package: packageName,
+    face: 'host',
+    schemas: [],
+    model: { services: [], events: [], objects: [] },
+    invocations: endpoints.map((endpoint) => {
+      const separator = endpoint.indexOf('/')
+      if (separator <= 0) throw new Error(`endpoint ${JSON.stringify(endpoint)} is not a <namespace>/<method> name`)
+      const namespace = endpoint.slice(0, separator)
+      const method = endpoint.slice(separator + 1)
+      return {
+        id: `${packageName}#${endpoint}`,
+        service: namespace,
+        namespace,
+        method,
+        invocation: { kind: 'direct' as const },
+        parameters: [],
+        result: { mode: 'strict' as const, typeSymbol: `${packageName}#Result`, create: () => z.string() },
+      }
+    }),
+  }
+}
+
+/**
+ * Mount `apply` as a plugin whose fiber carries `packageName` as its Loader entry name.
+ *
+ * The Loader assigns `fiber.entry` from its own `internal/plugin` observer, which runs before Cordis defers
+ * the plugin body to a microtask, and every plugin the body mounts inherits the same entry. This replicates
+ * both passes: the field is installed on the plugin's fiber and on each plugin it mounts in turn.
+ * @param host - Context to mount under.
+ * @param name - Plugin runtime name, as the declaring plugin would have in its composition.
+ * @param packageName - Loader entry module name, which the surface compares against the endpoint's owner.
+ * @param apply - The plugin body.
+ * @param inject - Services the plugin waits for, as its composition would declare them.
+ * @returns The mounted fiber, settling once the body has run.
+ */
+export function mountDeclaringPlugin(
+  host: Context,
+  name: string,
+  packageName: string,
+  apply: (ctx: Context) => void,
+  inject?: Inject,
+): Fiber & PromiseLike<Fiber> {
+  const entry = { options: { id: name, name: packageName } }
+  const declaring = new Set<Fiber>()
+  host.on('internal/plugin', (fiber) => {
+    const root = fiber.runtime?.name === name
+    // A plugin's own nested mounts inherit its entry, so the entry follows the fiber tree, not the name.
+    if (!root && !declaring.has(fiber.parent.fiber)) return
+    declaring.add(fiber)
+    Object.defineProperty(fiber, 'entry', { value: entry, configurable: true })
+  })
+  return host.plugin(inject === undefined ? { name, apply } : { name, apply, inject })
+}
diff --git a/packages/experimental/liveshare/tests/viewer-event-authority.spec.ts b/packages/experimental/liveshare/tests/viewer-event-authority.spec.ts
new file mode 100644
index 0000000000..8c738af64f
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-event-authority.spec.ts
@@ -0,0 +1,176 @@
+/**
+ * A viewer's generation stream carries only the Session notifications the `share-viewer` policy
+ * allows, never an Owner interaction, and the viewer's Peer cannot settle one.
+ */
+import { Context } from '@deepseek-ai/cordis'
+import RemoteAccessService from '@deepseek-ai/dsh-api-remote-access'
+import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
+import TypertGateway from '@deepseek-ai/dsh-api-gateway'
+import { Peer, type ConnectionRpcResult } from '@deepseek-ai/dsh-client-connection'
+import type { PeerScope, TypertResourceReader } from '@deepseek-ai/dsh-typert-protocol'
+import { describe, expect, it, onTestFinished } from 'vitest'
+import type { ForkRecord } from '../src/host/fork-registry.ts'
+import { createViewerAccessPolicy } from '../src/host/viewer-access-policy.ts'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+import { readerConnection } from './viewer-read-peers.ts'
+
+const actor = { providerId: 'mock', tenantId: 'tenant', subjectId: 'viewer' }
+
+type GatewayRpc = (endpoint: string, payload: unknown, signal: AbortSignal, peer: PeerScope) => Promise<ConnectionRpcResult<unknown>>
+
+/** The Session resource readers the forwarded `api-session/*` notifications declare. */
+const sessionArg: Readonly<Record<string, TypertResourceReader>> = { session: (sessionId: string) => sessionId }
+const addedSession: Readonly<Record<string, TypertResourceReader>> = {
+  session: (summary: { readonly sessionId: string }) => summary.sessionId,
+}
+
+describe('viewer forwarded interactions', () => {
+  it('forwards a reader only Session notifications about the shared Session and its own forks', async () => {
+    const ctx = new Context()
+    onTestFinished(() => ctx.fiber.dispose())
+    await ctx.plugin(TypertRegistry)
+    await ctx.plugin(RemoteAccessService)
+    ctx.provide('connection', { rpc: { intercept: () => () => {} } } as never)
+    await ctx.plugin(TypertGateway, {})
+    const ownChild: ForkRecord = {
+      childSessionId: 'own-child', shareId: 'share', sourceSessionId: 'source', boundary: 1, creator: actor, createdAt: '',
+    }
+    ctx.remoteAccess.registerPolicy('share-viewer', createViewerAccessPolicy({
+      share: shareId => shareId === 'share'
+        ? { shareId, sessionId: 'source', allowsFork: true, viewerAdmitted: true, stopped: false, sessionMode: 'view' }
+        : undefined,
+      viewerAdmitted: () => true,
+      sourceConfined: () => false,
+      forks: {
+        find: id => id === ownChild.childSessionId ? ownChild : undefined,
+        listForShare: () => [ownChild],
+        allowsPrompt: () => ({ ok: false, code: 'fork-ceiling-uninstalled', message: 'no ceiling' }),
+      },
+      workspaces: () => [],
+      declaredCapabilities: () => [],
+    }))
+    const emits = [
+      { event: 'api-session/status', args: ['private', true], resources: sessionArg },
+      { event: 'api-session/status', args: ['source', true], resources: sessionArg },
+      { event: 'api-session/added', args: [{ sessionId: 'own-child' }], resources: addedSession },
+      { event: 'api-session/added', args: [{ sessionId: 'someone-else' }], resources: addedSession },
+      { event: 'commands/change', args: [] },
+    ]
+    const go = Promise.withResolvers<undefined>()
+    const stop = ctx.typertGateway.registerRemoteEvents(signal => (async function* () {
+      await go.promise
+      yield* emits
+      await new Promise<void>((resolve) => {
+        if (signal.aborted) resolve()
+        else signal.addEventListener('abort', () => { resolve() }, { once: true })
+      })
+    })(), { home: '/owner' })
+    onTestFinished(stop)
+    const readers = readerConnection()
+    const read = createViewerReadService({
+      gateway: ctx.typertGateway, sharedSessionId: () => 'source', connection: readers.connection,
+    })
+    onTestFinished(async () => {
+      read.close()
+      await readers.dispose()
+    })
+    const owner = new Peer(ctx, { principal: { kind: 'owner' } })
+    const lifetime = new AbortController()
+    onTestFinished(() => { lifetime.abort() })
+    const ownerFrames = (await ctx.typertGateway.wireStream.open(
+      '$events', { args: {} }, (async function* () {})(), owner, lifetime.signal,
+    ))[Symbol.asyncIterator]()
+    expect((await ownerFrames.next()).value).toMatchObject({ type: 'ready' })
+
+    expect(await read.answer('share', { op: 'stream-open', id: 1, endpoint: '$events', payload: { args: {} } }, actor))
+      .toMatchObject({ status: 200 })
+    expect(await read.answer('share', { op: 'stream-next', id: 1 }, actor))
+      .toMatchObject({ status: 200, body: { values: [{ type: 'ready' }] } })
+    go.resolve(undefined)
+    const received: unknown[] = []
+    for (const _ of emits) received.push((await ownerFrames.next()).value)
+    const delivered: unknown[] = []
+    while (delivered.length < 2) {
+      const answer = await read.answer('share', { op: 'stream-next', id: 1 }, actor)
+      delivered.push(...(answer.body as { readonly values?: readonly unknown[] }).values ?? [])
+    }
+
+    // The owner receives every notification; the reader only those about the source and its own fork.
+    expect(received.map(frame => (frame as { readonly event: string }).event)).toEqual(emits.map(entry => entry.event))
+    expect(delivered).toEqual([
+      { type: 'emit', event: 'api-session/status', args: ['source', true] },
+      { type: 'emit', event: 'api-session/added', args: [{ sessionId: 'own-child' }] },
+    ])
+  })
+
+  it('keeps an Owner approval from the viewer and refuses the viewer\u2019s result for it', async () => {
+    const ctx = new Context()
+    onTestFinished(() => ctx.fiber.dispose())
+    await ctx.plugin(TypertRegistry)
+    await ctx.plugin(RemoteAccessService)
+    let dispatch: GatewayRpc | undefined
+    ctx.provide('connection', {
+      rpc: { intercept: (_path: string, _claims: unknown, handler: GatewayRpc) => { dispatch = handler; return () => {} } },
+    } as never)
+    await ctx.plugin(TypertGateway, {})
+    const outcome = Promise.withResolvers<unknown>()
+    const queued = Promise.withResolvers<undefined>()
+    const subject = { ctx }
+    const stop = ctx.typertGateway.registerRemoteEvents(signal => (async function* () {
+      yield {
+        event: 'approval/request', request: { agent: subject, reason: 'private owner operation' },
+        context: { value: ctx, subject, agentId: 'private-owner-agent' },
+        resolve: outcome.resolve, reject: outcome.reject,
+      }
+      queued.resolve(undefined)
+      await new Promise<void>((resolve) => {
+        if (signal.aborted) resolve()
+        else signal.addEventListener('abort', () => { resolve() }, { once: true })
+      })
+    })(), { home: '/owner' })
+    onTestFinished(stop)
+    await queued.promise
+    const gatewayRpc = (endpoint: string, payload: unknown, signal: AbortSignal, peer: PeerScope) => {
+      if (dispatch === undefined) throw new Error('Gateway interceptor was not registered')
+      return dispatch(endpoint, payload, signal, peer)
+    }
+    const readers = readerConnection(async (request, peer) => {
+      const body = await request.json() as { payload: unknown }
+      return Response.json({ result: await gatewayRpc('$events/result', body.payload, request.signal, peer) })
+    })
+    const read = createViewerReadService({
+      gateway: ctx.typertGateway, sharedSessionId: () => 'source', connection: readers.connection,
+    })
+    onTestFinished(async () => {
+      read.close()
+      await readers.dispose()
+    })
+
+    await read.answer('share', { op: 'stream-open', id: 1, endpoint: '$events', payload: { args: {} } }, actor)
+    const answer = await read.answer('share', { op: 'stream-next', id: 1 }, actor)
+    expect(answer).toMatchObject({ status: 200, body: { values: [{ type: 'ready' }] } })
+    expect(JSON.stringify(answer)).not.toContain('private-owner-agent')
+
+    // The Owner's own generation still receives the approval the viewer never saw.
+    const owner = new Peer(ctx, { principal: { kind: 'owner' } })
+    const lifetime = new AbortController()
+    onTestFinished(() => { lifetime.abort() })
+    const frames = (await ctx.typertGateway.wireStream.open(
+      '$events', { args: {} }, (async function* () {})(), owner, lifetime.signal,
+    ))[Symbol.asyncIterator]()
+    const ready = (await frames.next()).value as { readonly type: string; readonly clientId: string }
+    const approval = (await frames.next()).value as { readonly type: string; readonly eventId: string }
+    expect(ready).toMatchObject({ type: 'ready' })
+    expect(approval).toMatchObject({ type: 'waterfall', event: 'approval/request', agentId: 'private-owner-agent' })
+
+    // Naming the live event does not let the viewer's Peer settle it.
+    const result = (value: string) => ({
+      args: { clientId: ready.clientId, eventId: approval.eventId, outcome: { kind: 'result', value } },
+    })
+    expect(await read.answer('share', {
+      op: 'call', path: '/api/$events/result', body: { payload: result('allowed-once') },
+    }, actor)).toMatchObject({ status: 200, body: { result: { ok: false, error: { code: 'gateway/invocation-unavailable' } } } })
+    expect(await gatewayRpc('$events/result', result('denied'), lifetime.signal, owner)).toEqual({ ok: true })
+    expect(await outcome.promise).toEqual({ kind: 'result', value: 'denied' })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-fixture.client.ts b/packages/experimental/liveshare/tests/viewer-fixture.client.ts
new file mode 100644
index 0000000000..cce21efaa4
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-fixture.client.ts
@@ -0,0 +1,4520 @@
+/**
+ * Scripted owner the assembled viewer page tests read a share from: the page renders a session
+ * history without a Relay, an owner DSH, or fixture code inside the page's plugins.
+ *
+ * A spec names the situation it needs on the served address and the owner reads those switches
+ * ({@link fixtureOptionsFromLocation}), so the query stays the one place a spec states its world.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/tests/viewer-fixture
+ */
+
+import {
+  createAssistantMessage,
+  createSystemMessage,
+  createToolResultMessage,
+  createUserMessage,
+} from '@deepseek-ai/dsh-llm/message'
+import { brandString } from '@deepseek-ai/dsh-brand'
+import type { RemoteAccessFrame, RemoteAccessGrant } from '@deepseek-ai/dsh-api-remote-access/client'
+import type { MessageId, ReasoningEffortId, ToolCallId } from '@deepseek-ai/dsh-llm/brand'
+import type {
+  AssistantMessage,
+  ContentBlock,
+  MessageSource,
+  StreamChunk,
+  TokenUsage,
+  ToolResultMessage,
+  UserMessage,
+} from '@deepseek-ai/dsh-llm'
+import { LlmAttemptId } from '@deepseek-ai/dsh-llm/brand'
+import {
+  AssistantStreamAccumulator,
+  expandAssistantStream,
+  type AssistantStreamRecord,
+} from '@deepseek-ai/dsh-llm/assistant-stream'
+import type { AttachmentIdType, ImageAttachmentRef } from '@deepseek-ai/dsh-attachment'
+import type { RetryId } from '@deepseek-ai/dsh-llm-retry/types'
+import type { SessionTitleEventData, SessionTitleProviderId } from '@deepseek-ai/dsh-session-title/types'
+import type {} from '@deepseek-ai/dsh-agent'
+import type {} from '@deepseek-ai/dsh-tool-present/types'
+import type {
+  SessionEvent,
+  SessionEventMap,
+  SessionEventType,
+  SessionId,
+  SessionSeqCursor,
+  SurfaceEventType,
+  SurfaceOp,
+} from '@deepseek-ai/dsh-session/types'
+import { SESSION_FORMAT_VERSION, SessionSeq } from '@deepseek-ai/dsh-session/types'
+import type { JsonValue } from '@deepseek-ai/dsh-util-values'
+import type { TodoItem } from '@deepseek-ai/dsh-tool-todo/client'
+// Type-only: the brand constructor is host-side; the fixture casts at its
+// wire-fabrication boundary (the schema layer's one-cast-point posture).
+import type { CommandDefinitionId, CommandId } from '@deepseek-ai/dsh-commands/brand'
+import type { CommandDescriptor, CommandExecution, CommandResult } from '@deepseek-ai/dsh-commands/types'
+import type { CredentialInfo } from '@deepseek-ai/dsh-credentials/types'
+import type { DirectoryListing as FixtureDirectoryListing } from '@deepseek-ai/dsh-host-directory-picker/types'
+import type { SettingsDescribeValue, SettingsNamespaceView } from '@deepseek-ai/dsh-settings/types'
+import { deriveEventMessage, foldSurface } from '@deepseek-ai/dsh-session/surface'
+import type {
+  ClientConnectionRpc, ConnectionRpcFailure, ConnectionRpcResult, RpcResult,
+} from '@deepseek-ai/dsh-client-connection/client'
+
+declare module '@deepseek-ai/dsh-llm' {
+  interface MessageSourceMap {
+    /** Fixture-authored context injection, namespaced as the v3-to-v4 migration names external producers. */
+    'plugin:fixture': { kind: 'plugin:fixture' }
+  }
+}
+
+/**
+ * Event vocabulary the client aggregate does not load from the host plugins
+ * that own it. The fixture fabricates these log-only events, so it declares
+ * their payloads here (the same local-augmentation posture as the fixture
+ * message source above) and its fabricated log stays a real discriminated
+ * {@link SessionEvent} union.
+ */
+declare module '@deepseek-ai/dsh-session/types' {
+  interface SessionEventMap {
+    /** Host-only title event uses the title domain's client-safe payload. */
+    'session/title': SessionTitleEventData
+    /** Host-only approval override, matching the current user-approval declaration. */
+    'approval/policy': { policy: 'ask' | 'never'; source?: 'delegation' }
+    /** Mirrors `@deepseek-ai/dsh-permission-presets`'s durable preset intent. */
+    'permission/preset': { preset: string }
+    /** Mirrors `@deepseek-ai/dsh-sandbox-policy`'s durable sandbox-mode switch. */
+    'sandbox/mode': { mode: string }
+    /** Mirrors `@deepseek-ai/dsh-plan-mode`'s log-only plan-mode switch. */
+    'plan/mode': { active: boolean }
+    /** Mirrors `@deepseek-ai/dsh-goal`'s durable goal mutation. */
+    'goal/change': FxGoalChange
+  }
+}
+
+/** The `assistant/message` payload a log builder supplies before the settled stream is derived. */
+interface FixtureAssistantMessageData {
+  turn: number
+  step: number
+  message: AssistantMessage
+}
+
+/** One fixture-authored event before the log envelope, as the history builder supplies it. */
+type FixtureEventInput = {
+  [K in SessionEventType]: {
+    type: K
+    data: K extends 'assistant/message' ? FixtureAssistantMessageData : SessionEventMap[K]
+  } & (K extends SurfaceEventType ? { surfaceOp: SurfaceOp } : { surfaceOp?: never })
+}[SessionEventType]
+
+/** One fixture-authored event as an appender supplies it; the log adds time and sequence. */
+type FixtureStoredEventInput = {
+  [K in SessionEventType]: {
+    type: K
+    data: SessionEventMap[K]
+  } & (K extends SurfaceEventType ? { surfaceOp: SurfaceOp } : { surfaceOp?: never })
+}[SessionEventType]
+
+/** One fixture-authored event with its timestamp, before the log assigns its sequence. */
+type FixtureAuthoredEvent = {
+  [K in SessionEventType]: {
+    type: K
+    time: number
+    data: SessionEventMap[K]
+  } & (K extends SurfaceEventType ? { surfaceOp: SurfaceOp } : { surfaceOp?: never })
+}[SessionEventType]
+
+/**
+ * Add the log envelope's sequence number to one authored event.
+ * @param event - fixture-authored event carrying its type, time, and data.
+ * @param seq - the position the event occupies in the fabricated log.
+ * @returns the same event as a real Session log entry.
+ */
+function withEnvelope(event: FixtureAuthoredEvent, seq: SessionSeq): SessionEvent {
+  return { ...event, seq }
+}
+
+/**
+ * Correlation id for one fabricated wire message.
+ * @returns A version-4 UUID, matching the browser client's own generator.
+ */
+function randomUuid(): string {
+  const bytes = globalThis.crypto.getRandomValues(new Uint8Array(16))
+  const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength)
+  view.setUint8(6, (view.getUint8(6) & 0x0f) | 0x40)
+  view.setUint8(8, (view.getUint8(8) & 0x3f) | 0x80)
+  const hex = Array.from(bytes, byte => byte.toString(16).padStart(2, '0')).join('')
+  return `${hex.slice(0, 8)}-${hex.slice(8, 12)}-${hex.slice(12, 16)}-${hex.slice(16, 20)}-${hex.slice(20)}`
+}
+
+const FIXTURE_SESSION_SEARCH_RESULT_LIMIT = 20
+
+interface ModelSelection {
+  readonly provider: string
+  readonly model: string
+  readonly reasoningEffort?: ReasoningEffortId
+}
+
+interface ModelProviderGroup {
+  readonly id: string
+  readonly name: string
+  readonly models: readonly {
+    readonly id: string
+    readonly name: string
+    readonly description?: string
+    readonly reasoning?: {
+      readonly efforts: readonly { readonly id: string; readonly name: string; readonly description?: string }[]
+      readonly defaultEffort?: string
+    }
+  }[]
+}
+
+/* jscpd:ignore-start -- The standalone fixture mirrors host timing without importing a target implementation. */
+function isFixtureTokenDelta(chunk: StreamChunk): boolean {
+  switch (chunk.type) {
+    case 'text-delta':
+    case 'reasoning-delta':
+      return chunk.text !== ''
+    case 'tool-call-delta':
+      return chunk.argumentsDelta !== '' || chunk.name !== undefined
+    default:
+      return false
+  }
+}
+/* jscpd:ignore-end */
+
+interface FixtureSessionSummary {
+  readonly sessionId: SessionId
+  updatedAt: number
+  running: boolean
+  blank: boolean
+  readonly parentSessionId?: SessionId
+  readonly origin?: 'subagent'
+  /**
+   * Branch facts the owner publishes for a viewer's own fork. They travel as this row's projection
+   * value, exactly as the owner host publishes them, because the Session summary states none.
+   */
+  readonly forkLineage?: FixtureForkLineage
+  readonly cwd?: string
+  readonly agentPreset?: string
+  readonly projections?: FixtureProjectionsBlock
+}
+
+/** Branch facts one viewer's own fork carries under the `forkLineage` projection key. */
+interface FixtureForkLineage {
+  readonly origin: 'fork'
+  readonly sourceSessionId: SessionId
+  readonly authoredByViewer: boolean
+  readonly workspaceReadOnly: boolean
+}
+
+interface FixtureProjectionsBlock {
+  readonly kind?: 'cached' | 'sequenced'
+  readonly asOfSeq: number
+  readonly values: Readonly<Record<string, unknown>>
+}
+
+interface FixtureHistoryEntry {
+  readonly type: 'event'
+  readonly event: SessionEvent
+}
+
+type FixtureHistoryRecord = FixtureHistoryEntry
+
+type FixtureSessionAddress =
+  | { readonly kind: 'session'; readonly sessionId: SessionId }
+  | {
+    readonly kind: 'subagent'
+    readonly parentSessionId: SessionId
+    readonly childSessionId: SessionId
+    readonly mode: 'one-shot' | 'continuable'
+  }
+
+interface FixtureTurnWindow {
+  readonly minMessages: number
+  readonly minTurns: number
+}
+
+interface FixtureFollowRequest {
+  readonly address: FixtureSessionAddress
+  readonly maxMessages?: number
+  readonly turnWindow?: FixtureTurnWindow
+  readonly assistantStream?: true
+}
+
+interface FixturePageRequest {
+  readonly address: FixtureSessionAddress
+  readonly throughSeq: number
+  readonly beforeSeq?: number
+  readonly maxMessages?: number
+  readonly turnWindow?: FixtureTurnWindow
+}
+
+interface FixtureSessionWireHeader {
+  readonly version: number
+  readonly id: SessionId
+  readonly createdAt: number
+  readonly cwd?: string
+  readonly parentSession?: SessionId
+  readonly isSeeded: boolean
+  readonly origin?: 'subagent'
+  readonly delegationDepth?: number
+  readonly agentPreset?: string
+}
+
+type FixtureFollowFrame =
+  | {
+    readonly type: 'snapshot'
+    readonly header: FixtureSessionWireHeader
+    readonly cursor: number
+    readonly records: readonly FixtureHistoryRecord[]
+    readonly hasMore: boolean
+    readonly projections: FixtureProjectionsBlock
+    readonly assistantStream?: FixtureAssistantStreamBaseline
+  }
+  | FixtureHistoryEntry
+  | { readonly type: 'assistant-stream'; readonly frame: FixtureAssistantStreamFrame }
+
+type FixtureFollowEventFrame = Exclude<FixtureFollowFrame, { type: 'snapshot' }>
+
+interface FixtureAssistantStreamBaseline {
+  readonly revision: number
+  readonly activeAttempt?: {
+    readonly attemptId: ReturnType<typeof LlmAttemptId>
+    readonly startedAfterSeq: number
+    readonly turn: number
+    readonly step: number
+    readonly nextIndex: number
+    readonly stream: readonly AssistantStreamRecord[]
+  }
+}
+
+/** Assistant frame emitted by the standalone fixture; tests pin it to the controller wire type. */
+export type FixtureAssistantStreamFrame =
+  | {
+    readonly type: 'start'
+    readonly attemptId: ReturnType<typeof LlmAttemptId>
+    readonly revision: number
+    readonly startedAfterSeq: SessionSeqCursor
+    readonly turn: number
+    readonly step: number
+  }
+  | {
+    readonly type: 'chunk'
+    readonly attemptId: ReturnType<typeof LlmAttemptId>
+    readonly revision: number
+    readonly index: number
+    readonly time: number
+    readonly chunk: StreamChunk
+  }
+  | {
+    readonly type: 'end'
+    readonly attemptId: ReturnType<typeof LlmAttemptId>
+    readonly revision: number
+    readonly index: number
+    readonly outcome:
+      | {
+        readonly kind: 'committed'
+        readonly eventType: 'assistant/message' | 'assistant/attempt'
+        readonly seq: number
+      }
+      | { readonly kind: 'abandoned' }
+  }
+
+interface FixtureRemoteEventNotificationFrame {
+  readonly type: 'emit'
+  readonly event: string
+  readonly args: readonly unknown[]
+}
+
+interface FixtureRemoteEventInvocationFrame {
+  readonly type: 'waterfall'
+  readonly event: string
+  readonly eventId: string
+  readonly agentId: SessionId
+  readonly request: Readonly<Record<string, unknown>>
+}
+
+interface FixtureRemoteEventCancellationFrame {
+  readonly type: 'cancel'
+  readonly eventId: string
+}
+
+type FixtureRemoteEventFrame =
+  | FixtureRemoteEventNotificationFrame
+  | FixtureRemoteEventInvocationFrame
+  | FixtureRemoteEventCancellationFrame
+
+interface FixtureRemoteEventResult {
+  readonly clientId: string
+  readonly eventId: string
+  readonly outcome:
+    | { readonly kind: 'next' }
+    | { readonly kind: 'result'; readonly value?: unknown }
+    | {
+      readonly kind: 'rejected'
+      readonly error: {
+        readonly name: string
+        readonly message: string
+        readonly code?: string
+        readonly details?: unknown
+      }
+    }
+}
+
+interface FixtureRemoteEventReadyFrame {
+  readonly type: 'ready'
+  readonly clientId: string
+  readonly host: { readonly home: string }
+}
+
+/**
+ * Recognize one record at the fixture's fabricated wire boundary.
+ * @param value - untrusted value read from a fabricated frame.
+ * @returns whether the value is a non-array object.
+ */
+function isFixtureRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === 'object' && value !== null && !Array.isArray(value)
+}
+
+/**
+ * Validate one `$events/result` payload at the fixture's fabricated wire boundary.
+ * @param value - untrusted result carried by the RPC payload.
+ * @returns whether the value carries the correlation and outcome fields of a result.
+ */
+function isFixtureRemoteEventResult(value: unknown): value is FixtureRemoteEventResult {
+  if (!isFixtureRecord(value)) return false
+  if (typeof value.clientId !== 'string' || typeof value.eventId !== 'string') return false
+  const outcome = value.outcome
+  if (!isFixtureRecord(outcome)) return false
+  if (outcome.kind === 'next' || outcome.kind === 'result') return true
+  if (outcome.kind !== 'rejected') return false
+  const error = outcome.error
+  return isFixtureRecord(error) && typeof error.name === 'string' && typeof error.message === 'string'
+}
+
+/**
+ * Admit one `$events/result` payload for the fixture's own handler.
+ * @param value - untrusted result carried by the RPC payload.
+ * @returns the validated correlation id and outcome.
+ * @throws when the payload is missing a required wire field.
+ */
+function parseFixtureRemoteEventResult(value: unknown): FixtureRemoteEventResult {
+  if (!isFixtureRemoteEventResult(value)) throw new Error('fixture: malformed $events/result payload')
+  return value
+}
+
+interface FixtureProjectionFrame {
+  readonly type: 'projection'
+  readonly sessionId: SessionId
+  readonly key: string
+  readonly value: unknown
+  readonly seq: number
+}
+
+interface FixtureQuestionItem {
+  readonly id: string
+  readonly header?: string
+  readonly question: string
+  readonly detail?: string
+  readonly multiSelect?: boolean
+  readonly options?: readonly { readonly label: string; readonly description?: string }[]
+}
+
+/** One Session's share mode as the scripted owner's share policy holds it, never projection or list data. */
+export interface FixtureViewerGrant {
+  readonly sessionMode: string
+  readonly sessionModeReason?: string
+}
+
+/**
+ * Endpoint actions the owner's share policy allows a reader on every Session it may see. The UI reads
+ * only the write answers; the read rows keep the scripted snapshot shaped like the real one.
+ */
+const FIXTURE_SESSION_READS = [
+  'commands/list', 'goals/get', 'session/attachment', 'session/control', 'session/follow', 'session/list',
+  'session/page', 'session/projections', 'skills/list', 'workspace/follow',
+] as const
+
+/** Endpoint actions the owner's share policy allows a reader on the global resource. */
+const FIXTURE_GLOBAL_READS = [
+  'commands/list', 'llm/listConfigurableProviders', 'llm/listProviders',
+  'session/canOpenWorkspacePath', 'session/control', 'session/list', 'session/modelCatalog', 'workspace/follow',
+] as const
+
+type FixtureControlFrame =
+  | {
+    readonly type: 'baseline'
+    readonly value: {
+      readonly queues: Readonly<Record<string, readonly never[]>>
+      readonly jobs: Readonly<Record<string, readonly never[]>>
+      readonly approvals: readonly never[]
+      readonly questions: readonly never[]
+      readonly projections: Readonly<Record<string, FixtureProjectionsBlock>>
+    }
+  }
+  | FixtureProjectionFrame
+
+type FixturePromptPart =
+  | { readonly type: 'text'; readonly text: string }
+  | {
+    readonly type: 'image'
+    readonly mediaType: ImageAttachmentRef['mediaType']
+    readonly data: string
+    readonly name?: string
+  }
+
+interface FixtureSessionApi {
+  list(request: { readonly cursor?: string }): Promise<ConnectionRpcResult<unknown>>
+  search(
+    request: { readonly query: string },
+    signal: AbortSignal,
+  ): Promise<ConnectionRpcResult<unknown>>
+  create(request: {
+    readonly workspaceId?: WorkspaceId
+    readonly cwd?: string
+    readonly sessionId?: SessionId
+    readonly agentPreset?: string
+  }): Promise<ConnectionRpcResult<unknown>>
+  rename(request: { readonly sessionId: SessionId; readonly title: string }): Promise<ConnectionRpcResult<unknown>>
+  fork(request: { readonly sessionId: SessionId; readonly atSeq?: number }): Promise<ConnectionRpcResult<unknown>>
+  history(request: {
+    readonly sessionId: SessionId
+    readonly throughSeq?: number
+    readonly beforeSeq?: number
+    readonly maxMessages?: number
+    readonly turnWindow?: FixtureTurnWindow
+  }): Promise<ConnectionRpcResult<unknown>>
+  selectModel(request: {
+    readonly sessionId: SessionId
+    readonly provider: string
+    readonly model: string
+    readonly reasoningEffort?: string
+  }): Promise<ConnectionRpcResult<unknown>>
+  prompt(request: {
+    readonly requestId: string
+    readonly sessionId: SessionId
+    readonly mode: 'queue' | 'steer'
+    readonly content: readonly FixturePromptPart[]
+    readonly clientTimeZone?: string
+  }): Promise<ConnectionRpcResult<unknown>>
+  attachment(request: {
+    readonly sessionId: SessionId
+    readonly attachment: ImageAttachmentRef
+  }): Promise<ConnectionRpcResult<unknown>>
+  updateQueue(request: {
+    readonly sessionId: SessionId
+    readonly itemId: MessageId
+    readonly action: unknown
+  }): Promise<ConnectionRpcResult<unknown>>
+  cancel(request: { readonly sessionId: SessionId }): Promise<ConnectionRpcResult<unknown>>
+}
+
+type WorkspaceId = string & { readonly __fixtureWorkspaceId: 'WorkspaceId' }
+
+interface WorkspaceView {
+  readonly workspaceId: WorkspaceId
+  readonly path: string
+  readonly title: string
+  readonly sessionIds: readonly SessionId[]
+  readonly createdAt: string
+  readonly updatedAt: string
+}
+
+interface WorkspaceCreateRequest { readonly path: string }
+interface WorkspaceCreateValue { readonly workspace: WorkspaceView; readonly created: boolean }
+interface WorkspaceRenameRequest { readonly workspaceId: WorkspaceId; readonly title: string }
+interface WorkspaceValue { readonly workspace: WorkspaceView }
+interface WorkspaceDeleteRequest { readonly workspaceId: WorkspaceId }
+interface WorkspaceDeleteValue { readonly deleted: true }
+interface WorkspaceInsertBeforeRequest {
+  readonly workspaceId: WorkspaceId
+  readonly beforeWorkspaceId?: WorkspaceId
+}
+interface WorkspaceOrderValue { readonly workspaceIds: readonly WorkspaceId[] }
+interface WorkspaceInsertSessionBeforeRequest {
+  readonly workspaceId: WorkspaceId
+  readonly sessionId: SessionId
+  readonly beforeSessionId?: SessionId
+}
+interface WorkspaceArchiveSessionRequest { readonly sessionId: SessionId }
+interface WorkspaceUnarchiveSessionRequest { readonly sessionId: SessionId }
+interface WorkspaceArchiveValue { readonly archivedSessionIds: readonly SessionId[] }
+
+type WorkspaceFollowFrame =
+  | {
+    readonly type: 'baseline'
+    readonly value: {
+      readonly items: readonly WorkspaceView[]
+      readonly archivedSessionIds: readonly SessionId[]
+      readonly pinnedSessionIds: readonly SessionId[]
+    }
+  }
+  | { readonly type: 'upsert'; readonly workspace: WorkspaceView }
+  | { readonly type: 'remove'; readonly workspaceId: WorkspaceId }
+  | { readonly type: 'order'; readonly workspaceIds: readonly WorkspaceId[] }
+  | { readonly type: 'archived'; readonly archivedSessionIds: readonly SessionId[] }
+  | { readonly type: 'pinned'; readonly pinnedSessionIds: readonly SessionId[] }
+
+interface FixtureWorkspaceApi {
+  create(request: WorkspaceCreateRequest): Promise<ConnectionRpcResult<WorkspaceCreateValue>>
+  rename(request: WorkspaceRenameRequest): Promise<ConnectionRpcResult<WorkspaceValue>>
+  delete(request: WorkspaceDeleteRequest): Promise<ConnectionRpcResult<WorkspaceDeleteValue>>
+  insertBefore(request: WorkspaceInsertBeforeRequest): Promise<ConnectionRpcResult<WorkspaceOrderValue>>
+  insertSessionBefore(request: WorkspaceInsertSessionBeforeRequest): Promise<ConnectionRpcResult<WorkspaceValue>>
+  archiveSession(request: WorkspaceArchiveSessionRequest): Promise<ConnectionRpcResult<WorkspaceArchiveValue>>
+  unarchiveSession(request: WorkspaceUnarchiveSessionRequest): Promise<ConnectionRpcResult<WorkspaceArchiveValue>>
+}
+
+interface FixtureWorkspace {
+  workspaceId: WorkspaceId
+  path: string
+  title: string
+  sessionIds: SessionId[]
+  createdAt: string
+  updatedAt: string
+}
+
+function text(t: string): ContentBlock[] {
+  return [{ type: 'text', text: t }]
+}
+
+function userMessage(content: ContentBlock[], source: MessageSource = { kind: 'user' }): UserMessage {
+  return createUserMessage({ content, source })
+}
+
+function assistantMessage(content: ContentBlock[], model = 'fx-1'): AssistantMessage {
+  return createAssistantMessage({
+    content,
+    source: { provider: 'fixture', model },
+  })
+}
+
+function toolResultMessage(callId: string, content: ContentBlock[], isError: boolean): ToolResultMessage {
+  return createToolResultMessage({ callId: brandString<ToolCallId>(callId), content, isError })
+}
+
+const MARKDOWN_FIXTURE = [
+  '# Markdown fixture',
+  '',
+  'Assistant output renders **strong text**, *emphasis*, and `inline code`.',
+  '',
+  '- first item',
+  '  - nested item',
+  '',
+  '| Area | State |',
+  '| --- | --- |',
+  '| history | rendered |',
+  '| streaming | stable |',
+  '',
+  '[DeepSeek](https://www.deepseek.com)',
+  '',
+  '```ts',
+  'const markdown = true',
+  '```',
+].join('\n')
+
+const USER_MARKDOWN_LITERAL = '用户字面量：# 不渲染 `code` [link](https://example.com)'
+
+/**
+ * SGR wrapper for the terminal output sample below: authoring the escapes as
+ * `\u001b` keeps literal control bytes out of this source file.
+ * @param code - the SGR parameter (an ANSI color or attribute number).
+ * @param body - the text the attribute applies to.
+ * @returns the body wrapped in the attribute and a reset.
+ */
+function sgr(code: number, body: string): string {
+  return `\u001b[${code}m${body}\u001b[0m`
+}
+
+/**
+ * Terminal output sample for fixture turn 66, authored to carry every feature
+ * the terminal card draws that turn 60's two prompt rows cannot reach:
+ * basic-16 SGR foreground runs (green, red, bright-black) that must resolve to
+ * `--dsw-*` tokens, a bold run, column-aligned table rows that must scroll
+ * rather than fold, more than DEFAULT_TERMINAL_MAX_LINES (16) lines so the
+ * height cap collapses the middle. This constant is the visible body; the call
+ * site appends the shell result's `[exit code: N]` marker so Client derivation
+ * can consume it into the terminal status pill.
+ */
+const TERMINAL_OUTPUT_FIXTURE = [
+  sgr(1, 'Running 4 checks'),
+  `${sgr(32, '\u2713')} typecheck                                          1.82s`,
+  `${sgr(32, '\u2713')} lint                                               0.94s`,
+  `${sgr(32, '\u2713')} duplication                                        2.10s`,
+  `${sgr(31, '\u2717')} unit                                               8.41s`,
+  '',
+  sgr(90, 'packages/client/ui-primitives/tests/terminal-block.client.spec.tsx'),
+  `  ${sgr(31, 'FAIL')} caps output at the configured line budget`,
+  '    expected 16 lines, received 24',
+  '',
+  'NAME                        LINES    BRANCHES    FUNCTIONS    UNCOVERED',
+  'TerminalBlock.tsx           100%     100%        100%         -',
+  'ansi.ts                     100%     100%        100%         -',
+  'clipboard.ts                100%     100%        100%         -',
+  'CodeBlock.tsx               98.4%    96.2%       100%         41-43',
+  'highlight.ts                100%     100%        100%         -',
+  'Pill.tsx                    100%     100%        100%         -',
+  'StateDot.tsx                100%     100%        100%         -',
+  'markdown/Markdown.tsx       100%     100%        100%         -',
+  '',
+  sgr(31, '1 of 4 checks failed'),
+].join('\n')
+
+/**
+ * Structured grep metadata for the search sample (turn 67). `truncated` with a
+ * larger `total` than the retained match count exercises the search card's
+ * capped indicator; the file with more than CHAT_SEARCH_MAX_LINES rows
+ * exercises its head/tail height cap.
+ */
+const SEARCH_MATCHES_FIXTURE: { path: string; matches: { lineNumber: number; line: string }[] }[] = [
+  {
+    path: 'packages/client/ui-primitives/src/SearchBlock.tsx',
+    matches: [
+      { lineNumber: 16, line: 'export const DEFAULT_SEARCH_MAX_LINES = 16' },
+      { lineNumber: 138, line: 'export function SearchBlock(props: SearchBlockProps) {' },
+      { lineNumber: 141, line: '  const [collapsed, setCollapsed] = useState<ReadonlySet<number>>(() => new Set())' },
+    ],
+  },
+  {
+    path: 'packages/client/ui-tool/src/client/tool/models/search-card-model.ts',
+    matches: [
+      { lineNumber: 45, line: 'export const CHAT_SEARCH_MAX_LINES = 8' },
+      { lineNumber: 130, line: 'export function searchCardModel(block: ToolCallBlock): SearchCardModel | null {' },
+    ],
+  },
+  {
+    path: 'packages/client/ui-tool/src/client/tool/toolviews/search-row.tsx',
+    matches: [
+      { lineNumber: 34, line: 'export function SearchRow({ toolName, block, inspect, t }: SearchRowProps) {' },
+      { lineNumber: 36, line: '  const search = searchCardModel(block)' },
+      { lineNumber: 56, line: '      search={search}' },
+      { lineNumber: 78, line: "      yield ctx.slots.register({ name: 'tool.call.toolview', key: 'grep', locale: NS }, SearchRow)" },
+    ],
+  },
+]
+
+const SEARCH_MATCHES_TEXT = [
+  'Found 9 of 42 matches',
+  '',
+  ...SEARCH_MATCHES_FIXTURE.map(file =>
+    [file.path, ...file.matches.map(m => `Line ${m.lineNumber}: ${m.line}`)].join('\n')),
+  '',
+  '(Full grep result stored at: fixture://spill/grep-66. Read it to see every match.)',
+].join('\n')
+
+const SEARCH_PATHS_FIXTURE = [
+  'packages/client/ui-primitives/src/SearchBlock.tsx',
+  'packages/client/ui-primitives/src/SearchBlock.module.css',
+  'packages/client/ui-tool/src/client/tool/models/search-card-model.ts',
+  'packages/client/ui-tool/src/client/tool/toolviews/search-row.tsx',
+  'packages/client/ui-tool/tests/search-card.client.spec.tsx',
+]
+
+const SEARCH_PATHS_TEXT = [
+  ...SEARCH_PATHS_FIXTURE,
+  '',
+  '(Showing 5 of 23 paths. Full sorted result stored at: fixture://spill/glob-67. Read it to see every path.)',
+].join('\n')
+
+const READ_SAMPLE_FIRST_LINE = 41
+const READ_SAMPLE_SOURCE = [
+  'export interface ReadBlockProps {',
+  '  label?: string | undefined',
+  '  lines: readonly ReadBlockLine[]',
+  '  totalLines: number',
+  '  lang?: string | undefined',
+  '  maxLines?: number | undefined',
+  '  className?: string | undefined',
+  '}',
+  '',
+  '// A windowed read keeps the file line numbers in the gutter.',
+  'const marker = "fixture read sample"',
+]
+const READ_SAMPLE_LINES = READ_SAMPLE_SOURCE.map((text, index) => ({ number: READ_SAMPLE_FIRST_LINE + index, text }))
+const READ_SAMPLE_PATH = 'packages/client/ui-primitives/src/ReadBlock.tsx'
+const READ_SAMPLE_TOTAL = 180
+const READ_SAMPLE_LAST_LINE = READ_SAMPLE_FIRST_LINE + READ_SAMPLE_SOURCE.length - 1
+const READ_SAMPLE_TEXT = [
+  `<path>${READ_SAMPLE_PATH}</path>`,
+  '<type>file</type>',
+  '<content>',
+  ...READ_SAMPLE_SOURCE.map((text, index) => `${READ_SAMPLE_FIRST_LINE + index}: ${text}`),
+  '',
+  `(Showing lines ${READ_SAMPLE_FIRST_LINE}-${READ_SAMPLE_LAST_LINE} of ${READ_SAMPLE_TOTAL}. Use offset=${READ_SAMPLE_LAST_LINE + 1} to continue.)`,
+  '</content>',
+].join('\n')
+
+/**
+ * The `web_search` result metadata for the web-search turn. The sources cover a
+ * titled source with a snippet and date, a hostname-label fallback, and a
+ * titled source without a snippet; `truncated` exercises the capped indicator.
+ */
+const WEB_SEARCH_META = {
+  answer: 'DeepSeek Harness is a plugin-based agent harness on vendored Cordis where **every capability is a plugin**.',
+  sources: [
+    {
+      url: 'https://github.com/deepseek-ai/deepseek-harness',
+      title: 'DeepSeek Harness — plugin-based agent harness',
+      snippet: 'Everything is a plugin: session, tools, agent-loop, and LLM adapters all mount on the same Cordis context.',
+      publishedAt: '2026-07-01',
+    },
+    {
+      url: 'https://www.deepseek.com/blog/harness-architecture',
+      snippet: 'The capability-seam pattern splits each capability into interface, implementation, and consumer packages.',
+    },
+    {
+      url: 'https://docs.deepseek.com/harness/plugins',
+      title: 'Writing a harness plugin',
+      publishedAt: '2026-06-15',
+    },
+  ],
+  truncated: true,
+} satisfies JsonValue
+
+/** The `web_fetch` result metadata for the web-fetch turn. */
+const WEB_FETCH_META = {
+  url: 'https://www.deepseek.com/blog/harness-architecture',
+  statusCode: 200,
+  truncated: false,
+} satisfies JsonValue
+
+const DEEPSEEK_REASONING = {
+  efforts: [
+    { id: 'off', name: 'Off' },
+    { id: 'high', name: 'High' },
+    { id: 'max', name: 'Max' },
+  ],
+  defaultEffort: 'high',
+}
+
+const OPENAI_REASONING = {
+  efforts: [
+    { id: 'off', name: 'Off' },
+    { id: 'medium', name: 'Medium' },
+    { id: 'high', name: 'High' },
+    { id: 'max', name: 'Max' },
+  ],
+  defaultEffort: 'medium',
+}
+
+/** Catalog served by `session/modelCatalog` (fresh copies per call). */
+function fixtureModelGroups(): ModelProviderGroup[] {
+  return [
+    {
+      id: 'deepseek-official',
+      name: 'DeepSeek',
+      models: [
+        {
+          id: 'deepseek-v4-flash',
+          name: 'DeepSeek-V4-Flash',
+          description: '快速响应',
+          reasoning: DEEPSEEK_REASONING,
+        },
+        {
+          id: 'deepseek-v4-pro',
+          name: 'DeepSeek-V4-Pro',
+          description: '复杂任务',
+          reasoning: DEEPSEEK_REASONING,
+        },
+      ],
+    },
+    {
+      id: 'openai',
+      name: 'OpenAI',
+      models: [{ id: 'gpt-5', name: 'GPT-5', reasoning: OPENAI_REASONING }],
+    },
+  ]
+}
+
+function sid(id: string): SessionId {
+  return id as SessionId
+}
+
+const FIXTURE_IMAGE_DATA = 'iVBORw0KGgoAAAANSUhEUgAAAKAAAABaCAYAAAA/xl1SAAAAvklEQVR42u3SMQ0AAAjAMIyhELM4AAe8PD1qYFlk9cCXEAEDYkAwIAYEA2JAMCAGBANiQDAgBgQDYkAwIAYEA2JAMCAGBANiQDAgBgQDYkAwIAYEA2JAMCAGxIBCYEAMCAbEgGBADAgGxIBgQAwIBsSAYEAMCAbEgGBADAgGxIBgQAwIBsSAYEAMCAbEgGBADAgGxIAYEAyIAcGAGBAMiAHBgBgQDIgBwYAYEAyIAcGAGBAMiAHBgBgQDIgB4bYWLb6pnOb1xAAAAABJRU5ErkJggg=='
+const FIXTURE_IMAGE_REF: ImageAttachmentRef = {
+  attachmentId: 'fixture:image' as AttachmentIdType,
+  mediaType: 'image/png',
+  bytes: 247,
+  width: 160,
+  height: 90,
+  name: 'fixture-image.png',
+}
+
+/** Deterministic provider billing attached to fixture assistant messages. */
+function fixtureUsage(turn: number, step: number): TokenUsage {
+  return {
+    inputTokens: 20 + turn % 5,
+    outputTokens: 8 + step,
+    cacheReadTokens: turn === 0 ? 0 : 80,
+    cacheWriteTokens: turn % 10 === 0 ? 4 : 0,
+  }
+}
+
+/** Build a lossless settled stream for static fixture messages. */
+function fixtureSettledStream(
+  message: AssistantMessage,
+  usage: TokenUsage,
+  time: number,
+): AssistantStreamRecord[] {
+  const stream: AssistantStreamRecord[] = []
+  for (const [index, block] of message.content.entries()) {
+    stream.push(
+      { type: 'chunk', time, chunk: { type: 'block-start', index, blockType: block.type } },
+      { type: 'chunk', time, chunk: { type: 'block-end', index, block } },
+    )
+  }
+  stream.push(
+    { type: 'chunk', time, chunk: { type: 'usage', usage } },
+    { type: 'chunk', time, chunk: { type: 'finish', reason: { kind: 'stop' } } },
+  )
+  return stream
+}
+
+/** Rendered system prompt of the fx-alpha history: surface node 0. */
+const FIXTURE_SYSTEM_PROMPT = '你是 DeepSeek Harness 的 fixture 助手。用简洁的中文回答，并在需要时调用工具。'
+
+/** fx-alpha history script: 75 turns (~150+ messages -> 4 pages at PAGE_MESSAGES=50),
+ *  mixing reasoning blocks / tool call+result / context. */
+/**
+ * Build the fx-alpha history script.
+ * @param presented - Whether one turn declares workspace files for the Host desktop.
+ * @returns The durable events of the fixture history.
+ */
+function buildAlphaLog(presented = false): SessionEvent[] {
+  const events: FixtureAuthoredEvent[] = []
+  let time = Date.now() - 3_600_000
+  const push = (e: FixtureEventInput): SessionSeq => {
+    const seq = SessionSeq(events.length)
+    const nextTime = time + 800
+    time = nextTime
+    if (e.type === 'assistant/message') {
+      const usage = fixtureUsage(e.data.turn, e.data.step)
+      events.push({
+        type: 'assistant/message',
+        time: nextTime,
+        surfaceOp: e.surfaceOp,
+        data: {
+          ...e.data,
+          usage,
+          stream: fixtureSettledStream(e.data.message, usage, nextTime),
+        },
+      })
+    } else {
+      events.push({ ...e, time: nextTime })
+    }
+    return seq
+  }
+  // Completed fixture requests retain the route capacity recorded with them.
+  push({
+    type: 'request/context',
+    data: { provider: 'deepseek-official', model: 'deepseek-v4-flash', contextWindow: 128_000 },
+  })
+  for (let turn = 0; turn < 60; turn++) {
+    push({ type: 'turn/start', data: { turn } })
+    // The rendered system prompt is surface node 0, ahead of the first user message.
+    if (turn === 0) {
+      push({
+        type: 'system/message', surfaceOp: 'append',
+        data: { turn, step: 0, message: createSystemMessage(FIXTURE_SYSTEM_PROMPT) },
+      })
+    }
+    const userSeq = push({
+      type: 'user/message', surfaceOp: 'append',
+      data: userMessage(text(turn === 59 ? USER_MARKDOWN_LITERAL : `问题 ${turn}：fixture 历史消息，用于翻页与渲染验收。`)),
+    })
+    if (turn === 0) {
+      push({
+        type: 'session/title',
+        data: { title: 'Fixture 历史会话', messageSeqs: [userSeq], source: { kind: 'fallback' } },
+      })
+    }
+    if (turn % 9 === 4) {
+      push({ type: 'user/message', surfaceOp: 'append', data: userMessage(text(`[fixture] 上下文注入（turn ${turn}）`), { kind: 'plugin:fixture' }) })
+    }
+    push({ type: 'step/start', data: { turn, step: 0 } })
+    const withTool = turn % 5 === 2
+    const withReasoning = turn % 3 === 1
+    const blocks: ContentBlock[] = []
+    if (withReasoning) blocks.push({ type: 'reasoning', text: `思考过程 ${turn}：这是一段可折叠的 reasoning 内容。` })
+    blocks.push({ type: 'text', text: turn === 59 ? MARKDOWN_FIXTURE : `回答 ${turn}：这是 fixture 生成的历史回复正文。` })
+    if (withTool) {
+      const callId = brandString<ToolCallId>(`fx-call-${turn}`)
+      blocks.push({ type: 'tool-call', id: callId, name: 'echo', arguments: `{"text":"turn ${turn}"}` })
+      push({ type: 'assistant/message', surfaceOp: 'append', data: { turn, step: 0, message: assistantMessage(blocks) } })
+      push({ type: 'tool/call', data: { turn, step: 0, callId, name: 'echo', arguments: `{"text":"turn ${turn}"}` } })
+      push({ type: 'tool/result', surfaceOp: 'append', data: { turn, step: 0, message: toolResultMessage(callId, text(`ECHO: TURN ${turn}`), turn % 25 === 12) } })
+      push({ type: 'step/end', data: { turn, step: 0 } })
+      push({ type: 'step/start', data: { turn, step: 1 } })
+      push({ type: 'assistant/message', surfaceOp: 'append', data: { turn, step: 1, message: assistantMessage(text(`工具结果已消化（turn ${turn}）。`)) } })
+      push({ type: 'step/end', data: { turn, step: 1 } })
+    } else {
+      push({ type: 'assistant/message', surfaceOp: 'append', data: { turn, step: 0, message: assistantMessage(blocks) } })
+      push({ type: 'step/end', data: { turn, step: 0 } })
+    }
+    push({ type: 'turn/end', data: { turn, reason: { kind: 'completed' } } })
+  }
+  // The structured samples use real first-party names and result metadata so
+  // the fixture follows the same event-to-card path as a persisted Session.
+  // `echo` above remains the unknown-tool fallback.
+  const toolTurn = (
+    turn: number,
+    name: string,
+    args: string,
+    resultText: string,
+    resultMeta?: JsonValue,
+  ): void => {
+    const callId = brandString<ToolCallId>(`fx-call-${turn}`)
+    push({ type: 'turn/start', data: { turn } })
+    push({ type: 'user/message', surfaceOp: 'append', data: userMessage(text(`问题 ${turn}：${name} 样本。`)) })
+    push({ type: 'step/start', data: { turn, step: 0 } })
+    push({
+      type: 'assistant/message', surfaceOp: 'append',
+      data: { turn, step: 0, message: assistantMessage([{ type: 'tool-call', id: callId, name, arguments: args }]) },
+    })
+    push({ type: 'tool/call', data: { turn, step: 0, callId, name, arguments: args } })
+    push({
+      type: 'tool/result',
+      surfaceOp: 'append',
+      data: {
+        turn,
+        step: 0,
+        message: toolResultMessage(callId, text(resultText), false),
+        ...resultMeta === undefined ? {} : { meta: resultMeta },
+      },
+    })
+    push({ type: 'step/end', data: { turn, step: 0 } })
+    push({ type: 'turn/end', data: { turn, reason: { kind: 'completed' } } })
+  }
+  // A two-line command, so the fixture covers the terminal card's one-row-per-
+  // command-line prompt (and that the card still marks the call exactly once).
+  toolTurn(
+    60,
+    'bash',
+    '{"command":"ls -la\\necho done","description":"fixture 终端样本","workdir":"/tmp/fixture"}',
+    'total 2\ndrwxr-xr-x fixture\n-rw-r--r-- demo.txt',
+  )
+  toolTurn(
+    61,
+    'write',
+    '{"file_path":"notes/demo.txt","content":"hello fixture\\n"}',
+    'wrote notes/demo.txt',
+    { diffs: [{ path: 'notes/demo.txt', oldText: null, newText: 'hello fixture\n' }] },
+  )
+  toolTurn(
+    62,
+    'edit',
+    '{"file_path":"notes/demo.txt","old_string":"hello","new_string":"hello fixture"}',
+    '已编辑',
+    { diffs: [{ path: 'notes/demo.txt', oldText: 'hello', newText: 'hello fixture' }] },
+  )
+  toolTurn(
+    63,
+    'write',
+    '{"file_path":"notes/new-demo.txt","content":"hello fixture\\n"}',
+    '已写入',
+    { diffs: [{ path: 'notes/new-demo.txt', oldText: null, newText: 'hello fixture\n' }] },
+  )
+  // Turn 64: a multi-hunk edit — two scattered replacements in one file. Named
+  // `edit` so it lands on the keyed FileMutationRow (the resident diff card the
+  // single-hunk turn 62 also uses). Its result metadata carries two scattered
+  // hunks under one path header, so the card draws the first hunk, a `⋯` gap,
+  // then the second (the same-file
+  // second-hunk arm turns 62/63 cannot reach).
+  toolTurn(
+    64,
+    'edit',
+    '{"file_path":"src/config.ts","old_string":"const timeout = 30","new_string":"const timeout = 60"}',
+    '已编辑',
+    {
+      diffs: [
+        { path: 'src/config.ts', oldText: 'const timeout = 30', newText: 'const timeout = 60' },
+        { path: 'src/config.ts', oldText: 'retries: 1', newText: 'retries: 3' },
+      ],
+    },
+  )
+  // Turn 65: one run_code turn with three logged sub-dispatches — the Code
+  // Mode acceptance surface (parent code row + nested native-identical rows,
+  // including an isError sub-call and a bash sub-call that must hit the same
+  // keyed registration a top-level bash row uses).
+  {
+    const turn = 65
+    const callId = brandString<ToolCallId>(`fx-call-${turn}`)
+    const program = 'const listing = await tools.bash({ command: "ls notes", description: "List notes" })\n'
+      + 'const demo = await tools.read({ file_path: "notes/demo.txt" })\n'
+      + 'await tools.read({ file_path: "notes/missing.txt" }).catch(() => "tolerated")\n'
+      + 'return { listing, demo }'
+    const args = JSON.stringify({ code: program, description: 'Read the notes files and summarize' })
+    push({ type: 'turn/start', data: { turn } })
+    push({ type: 'user/message', surfaceOp: 'append', data: userMessage(text(`问题 ${turn}：run_code 样本。`)) })
+    push({ type: 'step/start', data: { turn, step: 0 } })
+    push({
+      type: 'assistant/message', surfaceOp: 'append',
+      data: { turn, step: 0, message: assistantMessage([{ type: 'tool-call', id: callId, name: 'run_code', arguments: args }]) },
+    })
+    push({ type: 'tool/call', data: { turn, step: 0, callId, name: 'run_code', arguments: args } })
+    const dispatchPair = (n: number, name: string, dispatchArgs: Record<string, unknown>, resultText: string, isError = false): void => {
+      push({
+        type: 'tool/ptc-dispatch-start',
+        data: { rootCallId: callId, parentCallId: callId, subCallId: brandString<ToolCallId>(`${callId}:ptc:${n}`), name, arguments: dispatchArgs },
+      })
+      push({
+        type: 'tool/ptc-dispatch',
+        data: {
+          rootCallId: callId, parentCallId: callId, subCallId: brandString<ToolCallId>(`${callId}:ptc:${n}`), name,
+          arguments: dispatchArgs, isError, content: [{ type: 'text', text: resultText }],
+        },
+      })
+    }
+    dispatchPair(1, 'bash', { command: 'ls notes', description: 'List notes' }, 'demo.txt\nnew-demo.txt')
+    dispatchPair(2, 'read', { file_path: 'notes/demo.txt' }, 'hello fixture\n')
+    dispatchPair(3, 'read', { file_path: 'notes/missing.txt' }, 'Error: ENOENT: notes/missing.txt not found', true)
+    push({
+      type: 'tool/result', surfaceOp: 'append',
+      data: { turn, step: 0, message: toolResultMessage(callId, text('{"listing":"demo.txt\\nnew-demo.txt","demo":"hello fixture\\n"}'), false) },
+    })
+    push({ type: 'step/end', data: { turn, step: 0 } })
+    push({ type: 'turn/end', data: { turn, reason: { kind: 'completed' } } })
+  }
+  // Turn 74: todo_write sample — the TodoRow toolview in the flow plus the
+  // todo/write snapshot event feeding the TodoPanel plan strip. Two items are
+  // in_progress: this fixture chooses the parallel policy, so both surfaces
+  // must render a parallel plan rather than the first active item alone.
+  const fixtureTodos: TodoItem[] = [
+    { content: '梳理需求', status: 'completed' },
+    { content: '实现 fixture 样本', status: 'in_progress' },
+    { content: '跑后台构建', status: 'in_progress' },
+    { content: '浏览器验收', status: 'pending' },
+  ]
+  // Turn 66: the terminal sample turn 60's two clean prompt rows cannot cover —
+  // ANSI SGR coloring, output past the terminal card's height cap, a nested cwd
+  // whose prompt label is its last segment, and a non-zero exit. The raw result
+  // includes an `[exit code: N]` marker below; Client
+  // derivation consumes it into the status pill before rendering the body.
+  //
+  // Ordered BEFORE the todo turn deliberately: the standing plan retires at the
+  // next `turn/start`, so a turn appended after it would leave the dock's plan
+  // strip empty and take the todo surfaces' own coverage with it.
+  toolTurn(
+    66,
+    'bash',
+    '{"command":"pnpm run check","description":"fixture 终端样本","workdir":"/tmp/fixture/deep/nested"}',
+    `${TERMINAL_OUTPUT_FIXTURE}\n[exit code: 1]`,
+  )
+
+  // Turns 67-68 carry the search card's two metadata variants: grouped matches
+  // and a flat path list, both truncated with a larger pre-cap total. Both use
+  // the keyed SearchRow registration. They stay before the todo turn for the
+  // same standing-plan reason as the bash turn.
+  toolTurn(
+    67,
+    'grep',
+    '{"pattern":"SEARCH_MAX_LINES","path":"packages/client"}',
+    SEARCH_MATCHES_TEXT,
+    { shape: 'matches', files: SEARCH_MATCHES_FIXTURE, truncated: true, total: 42 },
+  )
+  toolTurn(
+    68,
+    'glob',
+    '{"pattern":"**/SearchBlock*","path":"packages/client"}',
+    SEARCH_PATHS_TEXT,
+    { shape: 'paths', paths: SEARCH_PATHS_FIXTURE, truncated: true, total: 23 },
+  )
+
+  // Turn 69: the read sample — a WINDOW past an offset so the card draws file
+  // line numbers starting above 1 and a "showing N of M" note (the window is
+  // shorter than READ_SAMPLE_TOTAL), with a `ts` language hint the shiki path
+  // highlights. Named `read`, so it exercises the keyed ReadRow registration.
+  // The run_code sub-dispatches above cover nested read calls without result
+  // metadata; this top-level result carries the structured window.
+  toolTurn(
+    69,
+    'read',
+    `{"file_path":${JSON.stringify(READ_SAMPLE_PATH)},"offset":${READ_SAMPLE_FIRST_LINE}}`,
+    READ_SAMPLE_TEXT,
+    {
+      path: READ_SAMPLE_PATH,
+      offset: READ_SAMPLE_FIRST_LINE,
+      lines: READ_SAMPLE_LINES,
+      totalLines: READ_SAMPLE_TOTAL,
+      lang: 'ts',
+    },
+  )
+
+  // Turns 70-71 carry the web tools' result metadata. They stay before the todo
+  // turn because a later turn/start retires the standing plan projection.
+  toolTurn(
+    70,
+    'web_search',
+    '{"queries":["deepseek harness architecture"]}',
+    'Search results for deepseek harness architecture.',
+    WEB_SEARCH_META,
+  )
+  toolTurn(
+    71,
+    'web_fetch',
+    '{"url":"https://www.deepseek.com/blog/harness-architecture"}',
+    '# Harness architecture\n\nEverything is a plugin.',
+    WEB_FETCH_META,
+  )
+  if (presented) {
+    // A turn whose tool declared workspace files for the Host desktop, which is what the delivered-file
+    // rows act on. The real tool declares them mid-turn, so the fixture lands the event before the
+    // turn's own end rather than after it.
+    const presentAt = events.length - 1
+    const presentTime = (events[presentAt - 1]?.time ?? 0) + 200
+    events.splice(presentAt, 0, {
+      type: 'deliverables/presented',
+      time: presentTime,
+      data: {
+        turn: 71,
+        callId: brandString<ToolCallId>('fx-present-71'),
+        files: [{ path: 'notes/demo.txt', description: 'fixture 交付文件' }],
+      },
+    })
+  }
+
+  // Turn 72: max-tokens sample — the provider ends the turn at its output cap
+  // mid-sentence, so the chat flow must render the turn-max-tokens notice
+  // instead of ending silently. Ordered before the todo turn for the same
+  // standing-plan reason the bash turn is.
+  push({ type: 'turn/start', data: { turn: 72 } })
+  push({ type: 'user/message', surfaceOp: 'append', data: userMessage(text('问题 72：请完整列出全部一百条条目。')) })
+  push({ type: 'step/start', data: { turn: 72, step: 0 } })
+  push({
+    type: 'assistant/message',
+    surfaceOp: 'append',
+    data: { turn: 72, step: 0, message: assistantMessage(text('条目 1：第一条。条目 2：第二条。条目 3：这一条写到一半被')) },
+  })
+  push({ type: 'step/end', data: { turn: 72, step: 0 } })
+  push({ type: 'turn/end', data: { turn: 72, reason: { kind: 'max-tokens' } } })
+
+  // Turn 73: user and assistant images share one durable fixture object.
+  // The todo turn remains last so its standing projection stays visible.
+  push({ type: 'turn/start', data: { turn: 73 } })
+  push({
+    type: 'user/message',
+    surfaceOp: 'append',
+    data: userMessage([{ type: 'image', attachment: FIXTURE_IMAGE_REF }, ...text('历史用户图片')]),
+  })
+  push({ type: 'step/start', data: { turn: 73, step: 0 } })
+  push({
+    type: 'assistant/message',
+    surfaceOp: 'append',
+    data: {
+      turn: 73,
+      step: 0,
+      message: assistantMessage(
+        [...text('结构化模型图片：'), { type: 'image', attachment: FIXTURE_IMAGE_REF }],
+        'fx-vision',
+      ),
+    },
+  })
+  push({ type: 'step/end', data: { turn: 73, step: 0 } })
+  push({ type: 'turn/end', data: { turn: 73, reason: { kind: 'completed' } } })
+
+  const todoArgs = JSON.stringify({ todos: fixtureTodos })
+  toolTurn(74, 'todo_write', todoArgs, 'Updated todo list: 1 pending, 2 in progress, 1 completed.')
+  // The real tool appends the snapshot mid-execution — between tool/call and
+  // tool/result — so the fixture reproduces that exact ordering (the last
+  // toolTurn events run ... tool/call, tool/result, step/end, turn/end).
+  const callIndex = events.length - 4
+  const callTime = events[callIndex]?.time ?? 0
+  events.splice(callIndex + 1, 0, { type: 'todo/write', time: callTime + 400, data: { todos: fixtureTodos } })
+  return events.map((event, index) => withEnvelope(event, SessionSeq(index)))
+}
+
+/**
+ * Fixture parallel of the plan unit's lifecycle fold. The paired
+ * `command/done` retains successful plan selections and drops failures;
+ * `plan/mode` commits one. `wanted` is exposed for the prompt boundary (the
+ * fixture's step/start parallel).
+ */
+function foldPlan(log: readonly SessionEvent[]): { active: boolean; pending: boolean; wanted: boolean | null } {
+  let active = false
+  let wanted: boolean | null = null
+  let running: { commandId: CommandId; wanted: boolean } | null = null
+  for (const event of log) {
+    if (event.type === 'command/run' && event.data.name === 'plan') {
+      const args = event.data.args
+      if (typeof args !== 'string') continue
+      running = { commandId: event.data.commandId, wanted: args.trim() !== 'off' }
+    } else if (event.type === 'command/done'
+      && running !== null
+      && event.data.commandId === running.commandId) {
+      wanted = event.data.kind === 'success' && running.wanted !== active ? running.wanted : null
+      running = null
+    } else if (event.type === 'plan/mode') {
+      active = event.data.active
+      wanted = null
+    }
+  }
+  const selected = running?.wanted ?? wanted
+  return { active, pending: selected !== null && selected !== active, wanted: selected }
+}
+
+/** The plan projection's wire view over the full log. */
+function planViewOf(log: readonly SessionEvent[]): { active: boolean; pending: boolean } {
+  const plan = foldPlan(log)
+  return { active: plan.active, pending: plan.pending }
+}
+
+/** Fixture parallel of the host's projection units: whole current values per key over the full log. */
+/** Fixture preset table (the host PermissionPresetService defaults). */
+const PERMISSION_PRESETS: Record<string, { sandbox: string; approval: 'ask' | 'never'; description: string }> = {
+  'workspace-write': { sandbox: 'workspace-write', approval: 'ask', description: 'Write inside the workspace and permitted temporary directories; wider retries require approval.' },
+  'danger-full-access': { sandbox: 'danger-full-access', approval: 'never', description: 'Full file access without approval prompts.' },
+}
+
+/** Host permissions-unit parallel: fold the three knob events, derive the select over the fixture defaults. */
+function permissionSelectOf(
+  log: readonly SessionEvent[],
+): { options: { value: string; name: string; description?: string }[]; currentValue: string } {
+  let preset: string | null = null
+  let sandbox = 'workspace-write'
+  let approval = 'ask'
+  for (const event of log) {
+    const item = event as { type: string; data: Record<string, unknown> }
+    if (item.type === 'permission/preset') preset = item.data['preset'] as string
+    else if (item.type === 'sandbox/mode') sandbox = item.data['mode'] as string
+    else if (item.type === 'approval/policy') approval = item.data['policy'] as string
+  }
+  const matches = (spec: { sandbox: string; approval: string }): boolean => spec.sandbox === sandbox && spec.approval === approval
+  let currentValue = 'custom'
+  const folded = preset === null ? undefined : PERMISSION_PRESETS[preset]
+  if (preset !== null && folded !== undefined && matches(folded)) {
+    currentValue = preset
+  } else {
+    for (const [name, spec] of Object.entries(PERMISSION_PRESETS)) {
+      if (matches(spec)) { currentValue = name; break }
+    }
+  }
+  return {
+    options: [
+      ...Object.entries(PERMISSION_PRESETS).map(([value, spec]) => ({ value, name: value, description: spec.description })),
+      ...currentValue === 'custom' ? [{ value: 'custom', name: 'Custom', description: 'Current sandbox and approval settings do not match a preset.' }] : [],
+    ],
+    currentValue,
+  }
+}
+
+interface FixtureTokenUsageProjection {
+  uncachedInputTokens: number
+  outputTokens: number
+  cacheReadTokens: number
+  cacheWriteTokens: number
+}
+
+interface FixtureUsageSample {
+  turn: number
+  step: number
+  usage: TokenUsage
+}
+
+/** Read one provider usage sample from either durable carrier. */
+function usageSampleOf(event: SessionEvent): FixtureUsageSample | undefined {
+  if (event.type !== 'assistant/message' && event.type !== 'assistant/attempt') return undefined
+  let usage = event.type === 'assistant/message' ? event.data.usage : undefined
+  for (const member of expandAssistantStream(event.data.stream)) {
+    if (member.chunk.type === 'usage') usage = member.chunk.usage
+  }
+  return usage === undefined
+    ? undefined
+    : { turn: event.data.turn, step: event.data.step, usage }
+}
+
+/** Fixture parallel of token-meter's last-sample-replacing usage projection. */
+function tokenUsageOf(log: readonly SessionEvent[]): FixtureTokenUsageProjection {
+  const totals: FixtureTokenUsageProjection = {
+    uncachedInputTokens: 0,
+    outputTokens: 0,
+    cacheReadTokens: 0,
+    cacheWriteTokens: 0,
+  }
+  let last: {
+    turn: number
+    step: number
+    buckets: FixtureTokenUsageProjection
+  } | null = null
+  for (const event of log) {
+    const sample = usageSampleOf(event)
+    if (sample === undefined) continue
+    const buckets: FixtureTokenUsageProjection = {
+      uncachedInputTokens: sample.usage.inputTokens,
+      outputTokens: sample.usage.outputTokens,
+      cacheReadTokens: sample.usage.cacheReadTokens ?? 0,
+      cacheWriteTokens: sample.usage.cacheWriteTokens ?? 0,
+    }
+    const previous = last?.turn === sample.turn && last.step === sample.step
+      ? last.buckets
+      : undefined
+    totals.uncachedInputTokens += buckets.uncachedInputTokens - (previous?.uncachedInputTokens ?? 0)
+    totals.outputTokens += buckets.outputTokens - (previous?.outputTokens ?? 0)
+    totals.cacheReadTokens += buckets.cacheReadTokens - (previous?.cacheReadTokens ?? 0)
+    totals.cacheWriteTokens += buckets.cacheWriteTokens - (previous?.cacheWriteTokens ?? 0)
+    last = { turn: sample.turn, step: sample.step, buckets }
+  }
+  return totals
+}
+
+/** Fixture parallel of session-stats' whole-log counting and wall-time fold. */
+function sessionStatsOf(log: readonly SessionEvent[]): {
+  turns: number
+  steps: number
+  llmMs: number
+  toolMs: number
+  ttftMs: number
+  ttftSteps: number
+  decodeMs: number
+  decodeTokens: number
+} {
+  const value = { turns: 0, steps: 0, llmMs: 0, toolMs: 0, ttftMs: 0, ttftSteps: 0, decodeMs: 0, decodeTokens: 0 }
+  let lastTurn: number | null = null
+  let openStep: { turn: number; step: number; startTime: number; firstTokenTime: number | null } | null = null
+  const pendingCalls = new Map<string, number>()
+  for (const event of log) {
+    switch (event.type) {
+      case 'step/start':
+        openStep = { turn: event.data.turn, step: event.data.step, startTime: event.time, firstTokenTime: null }
+        break
+      case 'assistant/attempt': {
+        if (openStep === null || openStep.turn !== event.data.turn || openStep.step !== event.data.step) break
+        const first = expandAssistantStream(event.data.stream)
+          .find(member => isFixtureTokenDelta(member.chunk))?.time
+        if (openStep.firstTokenTime === null && first !== undefined) openStep.firstTokenTime = first
+        break
+      }
+      case 'assistant/message': {
+        if (openStep === null || openStep.turn !== event.data.turn || openStep.step !== event.data.step) break
+        const first = expandAssistantStream(event.data.stream)
+          .find(member => isFixtureTokenDelta(member.chunk))?.time
+        if (openStep.firstTokenTime === null && first !== undefined) openStep.firstTokenTime = first
+        value.llmMs += Math.max(0, event.time - openStep.startTime)
+        if (openStep.firstTokenTime !== null) {
+          value.ttftMs += Math.max(0, openStep.firstTokenTime - openStep.startTime)
+          value.ttftSteps += 1
+          const outputTokens = event.data.usage?.outputTokens
+          if (typeof outputTokens === 'number' && Number.isFinite(outputTokens) && outputTokens >= 0) {
+            value.decodeMs += Math.max(0, event.time - openStep.firstTokenTime)
+            value.decodeTokens += outputTokens
+          }
+        }
+        openStep = null
+        break
+      }
+      case 'tool/call':
+        pendingCalls.set(event.data.callId, event.time)
+        break
+      case 'tool/result': {
+        const callId = event.data.message.source.callId
+        const dispatched = pendingCalls.get(callId)
+        if (dispatched === undefined) break
+        pendingCalls.delete(callId)
+        value.toolMs += Math.max(0, event.time - dispatched)
+        break
+      }
+      case 'step/end':
+        if (event.data.turn !== lastTurn) {
+          value.turns += 1
+          lastTurn = event.data.turn
+        }
+        value.steps += 1
+        openStep = null
+        break
+      case 'turn/end':
+        pendingCalls.clear()
+        break
+      default:
+        break
+    }
+  }
+  return value
+}
+
+interface FixtureRequestContext {
+  provider: string
+  model: string
+  contextWindow?: number
+}
+
+interface FixtureContextBreakdownProjection {
+  systemTokens: number
+  toolsTokens: number
+  messageTokens: number
+}
+
+/** Fixed token-meter heuristic constants mirrored by this client-only fixture. */
+const CHARS_PER_TOKEN = 4
+const BLOCK_OVERHEAD = 4
+const ROLE_OVERHEAD = 4
+
+/** Price fixture content with token-meter's fixed-density heuristic. */
+function estimateFixtureContent(blocks: readonly ContentBlock[]): number {
+  const densityPrice = (value: string): number => Math.ceil(value.length / CHARS_PER_TOKEN)
+  return blocks.reduce((tokens, block) => {
+    if (block.type === 'text' || block.type === 'reasoning') {
+      return tokens + densityPrice(block.text) + BLOCK_OVERHEAD
+    }
+    if (block.type === 'tool-call') {
+      return tokens + densityPrice(block.name) + densityPrice(block.arguments) + BLOCK_OVERHEAD
+    }
+    // ContentBlockMap is merge-extensible: this client graph sees only the base
+    // members, but fixture turns can carry add/remove blocks at runtime, so the
+    // structural JSON fallback below is live code.
+    return tokens + densityPrice(JSON.stringify(block)) + BLOCK_OVERHEAD
+  }, 0)
+}
+
+/**
+ * Fixture parallel of token-meter's heuristic context-composition projection.
+ * The system prompt is the system-role surface node; it prices as text plus
+ * role framing with no block overhead and stays out of the message figure.
+ */
+function contextBreakdownOf(log: readonly SessionEvent[]): FixtureContextBreakdownProjection {
+  const headerEvent = log.findLast(event => event.type === 'request/header')
+  const header = headerEvent === undefined
+    ? undefined
+    : headerEvent.data.header
+  let systemTokens = 0
+  let messageTokens = 0
+  for (const seq of foldSurface(log).nodes) {
+    const event = log[seq]
+    if (event === undefined) continue
+    const message = deriveEventMessage(event)
+    if (message === null) continue
+    if (message.role === 'system') {
+      const characters = message.content.reduce(
+        (total, block) => total + (block.type === 'text' ? block.text.length : JSON.stringify(block).length),
+        0,
+      )
+      systemTokens = Math.ceil(characters / CHARS_PER_TOKEN) + ROLE_OVERHEAD
+      continue
+    }
+    messageTokens += estimateFixtureContent(message.content) + ROLE_OVERHEAD
+  }
+  return {
+    systemTokens,
+    toolsTokens: header?.tools === undefined || header.tools.length === 0
+      ? 0
+      : Math.ceil(JSON.stringify(header.tools).length / CHARS_PER_TOKEN) + BLOCK_OVERHEAD,
+    messageTokens,
+  }
+}
+
+/** Latest log-only route context, or undefined before any request ran. */
+function lastRequestContext(
+  log: readonly SessionEvent[],
+): FixtureRequestContext | undefined {
+  const event = log.findLast(
+    (item): item is Extract<SessionEvent, { type: 'request/context' }> => item.type === 'request/context',
+  )
+  return event?.data
+}
+
+/**
+ * Fixture parallel of token-meter's request-pressure projection: the last
+ * provider-reported prompt size paired with the last recorded capacity. The
+ * two need not come from one request — see the token-meter README. The host's
+ * `projectedTokens` is deliberately absent: reproducing it would mean
+ * reimplementing the estimator client-side, and every consumer falls back to
+ * the bare sample, so a fixture-driven view simply lags a compaction the way
+ * the projection did before that field existed.
+ */
+function contextPressureOf(
+  log: readonly SessionEvent[],
+): { pressureTokens?: number; contextWindow?: number } {
+  let pressureTokens: number | undefined
+  for (const event of log) {
+    const sample = usageSampleOf(event)
+    if (sample === undefined) continue
+    pressureTokens = sample.usage.inputTokens
+      + (sample.usage.cacheReadTokens ?? 0)
+      + (sample.usage.cacheWriteTokens ?? 0)
+  }
+  const contextWindow = lastRequestContext(log)?.contextWindow
+  return {
+    ...pressureTokens === undefined ? {} : { pressureTokens },
+    ...contextWindow === undefined ? {} : { contextWindow },
+  }
+}
+
+function projectionValuesOf(log: readonly SessionEvent[]): Record<string, unknown> {
+  const values: Record<string, unknown> = {}
+  values['modelSelection'] = modelSelectionProjectionOf(log)
+  const titleEvent = log.findLast(
+    (item): item is Extract<SessionEvent, { type: 'session/title' }> => item.type === 'session/title',
+  )
+  if (titleEvent !== undefined) values['title'] = titleEvent.data.title
+  // Always present (tool-todo unit composed): null when no plan stands.
+  values['todos'] = backscanTodos(log) ?? null
+  // Always present (permission service composed): the whole select.
+  values['permissions'] = permissionSelectOf(log)
+  // Always present (plan-mode unit composed): the {active, pending} view.
+  values['plan'] = planViewOf(log)
+  // Always present (GoalService unit composed): null before create / after clear.
+  values['goal'] = backscanGoal(log)
+  // Always present (token-meter composed): full-log provider billing.
+  values['tokenUsage'] = tokenUsageOf(log)
+  // Always present (token-meter composed): last request pressure and capacity.
+  values['contextPressure'] = contextPressureOf(log)
+  // Always present (token-meter composed): heuristic request composition.
+  values['contextBreakdown'] = contextBreakdownOf(log)
+  // Always present (session-stats unit composed): whole-log turn/step counts.
+  values['sessionStats'] = sessionStatsOf(log)
+  // Always present (attachment service composed): the deployment image
+  // limits, constant per boot (mirrors the attachment-local defaults).
+  // Deliberate host divergence: the real gateway never pushes an imageLimits
+  // change frame (constant unit), but the fixture's uniform baseline replay
+  // frames every key here, incidentally exercising higher-seq-wins.
+  values['imageLimits'] = {
+    maxImageBytes: 5 * 1024 * 1024,
+    maxImagesPerMessage: 20,
+    maxMessageImageBytes: 100 * 1024 * 1024,
+    maxImagePixels: 40_000_000,
+    maxImageDimension: 2000,
+    mediaTypes: ['image/png', 'image/jpeg', 'image/webp', 'image/gif'],
+  }
+  return values
+}
+
+function modelSelectionProjectionOf(log: readonly SessionEvent[]): {
+  lastUsed: ModelSelection | null
+  next: ModelSelection | null
+} {
+  let lastUsed: ModelSelection | null = null
+  let pending: ModelSelection | null = null
+  for (const event of log) {
+    if (event.type === 'model/selection') {
+      pending = event.data
+      continue
+    }
+    if (event.type !== 'request/header') continue
+    lastUsed = {
+      provider: event.data.header.config.provider,
+      model: event.data.header.config.model,
+      ...(event.data.header.config.reasoningEffort === undefined
+        ? {}
+        : { reasoningEffort: event.data.header.config.reasoningEffort }),
+    }
+    if (sameModelSelection(pending, lastUsed)) pending = null
+  }
+  return { lastUsed, next: pending ?? lastUsed }
+}
+
+function sameModelSelection(left: ModelSelection | null, right: ModelSelection | null): boolean {
+  return left === right || (left !== null && right !== null
+    && left.provider === right.provider
+    && left.model === right.model
+    && left.reasoningEffort === right.reasoningEffort)
+}
+
+/** Host parallel: emit one Session control projection frame per key advanced by the event. */
+function projectionFramesOf(
+  id: SessionId,
+  log: readonly SessionEvent[],
+  event: SessionEvent,
+): FixtureProjectionFrame[] {
+  const type = event.type
+  const frames: FixtureProjectionFrame[] = []
+  if (type === 'model/selection' || type === 'request/header') {
+    frames.push({
+      type: 'projection',
+      sessionId: id,
+      key: 'modelSelection',
+      value: modelSelectionProjectionOf(log),
+      seq: event.seq,
+    })
+  }
+  // One usage sample advances both token-meter units.
+  if (usageSampleOf(event) !== undefined) {
+    frames.push(
+      { type: 'projection', sessionId: id, key: 'tokenUsage', value: tokenUsageOf(log), seq: event.seq },
+      { type: 'projection', sessionId: id, key: 'contextPressure', value: contextPressureOf(log), seq: event.seq },
+    )
+  }
+  if (type === 'request/context') {
+    frames.push({
+      type: 'projection',
+      sessionId: id,
+      key: 'contextPressure',
+      value: contextPressureOf(log),
+      seq: event.seq,
+    })
+  }
+  if (type === 'request/header'
+    || type === 'system/message'
+    || type === 'user/message'
+    || type === 'assistant/message'
+    || type === 'tool/result') {
+    frames.push({
+      type: 'projection',
+      sessionId: id,
+      key: 'contextBreakdown',
+      value: contextBreakdownOf(log),
+      seq: event.seq,
+    })
+  }
+  // The stats fold's view advances on message assembly and tool settlement
+  // (wall times) and on step close (counts).
+  if (type === 'assistant/message' || type === 'tool/result' || type === 'step/end') {
+    frames.push({
+      type: 'projection',
+      sessionId: id,
+      key: 'sessionStats',
+      value: sessionStatsOf(log),
+      seq: event.seq,
+    })
+  }
+  if (frames.length > 0) return frames
+  if (type === 'session/title') {
+    const values = projectionValuesOf(log)
+    /* v8 ignore next -- the advancing title event is in the log, so the key is present. */
+    if (!Object.hasOwn(values, 'title')) return []
+    return [{ type: 'projection', sessionId: id, key: 'title', value: values['title'], seq: event.seq }]
+  }
+  // The goal domain's own durable change advances its projection.
+  if (type === 'goal/change') {
+    return [{ type: 'projection', sessionId: id, key: 'goal', value: backscanGoal(log), seq: event.seq }]
+  }
+  // Standing-plan fold: writes replace the list; turn/start clears it (null).
+  if (type === 'todo/write' || type === 'turn/start') {
+    return [{
+      type: 'projection',
+      sessionId: id,
+      key: 'todos',
+      value: backscanTodos(log) ?? null,
+      seq: event.seq,
+    }]
+  }
+  // Knob fold: any of the three whole-value knob events advances the select.
+  if (type === 'permission/preset' || type === 'sandbox/mode' || type === 'approval/policy') {
+    return [{
+      type: 'projection',
+      sessionId: id,
+      key: 'permissions',
+      value: permissionSelectOf(log),
+      seq: event.seq,
+    }]
+  }
+  // The plan unit advances on its two folded event kinds when the command
+  // lifecycle contains the input that represents a plan selection.
+  if (type === 'plan/mode' || (event.type === 'command/run'
+    && event.data.name === 'plan' && typeof event.data.args === 'string')) {
+    return [{
+      type: 'projection',
+      sessionId: id,
+      key: 'plan',
+      value: planViewOf(log),
+      seq: event.seq,
+    }]
+  }
+  return []
+}
+
+/**
+ * Mirror Host paging: ordinary turn windows stop at a completed turn start; the message cap
+ * remains a separate upper bound that preserves packed surface event groups.
+ */
+function pageOf(
+  log: readonly SessionEvent[],
+  beforeSeq: number | undefined,
+  maxMessages: number,
+  turnWindow?: FixtureTurnWindow,
+): { records: FixtureHistoryRecord[]; hasMore: boolean } {
+  const end = beforeSeq === undefined ? log.length : Math.max(0, Math.min(beforeSeq, log.length))
+  let start = 0
+  let messages = 0
+  let turns = 0
+  for (let i = end - 1; i >= 0; i--) {
+    const event = log[i]
+    /* v8 ignore next -- dense-array guard: log seqs are array indexes, i stays within [0, end). */
+    if (event === undefined) break
+    if (turnWindow !== undefined && event.type === 'turn/start') {
+      turns++
+      if (messages >= turnWindow.minMessages && turns >= turnWindow.minTurns) {
+        start = i
+        break
+      }
+    }
+    if ((event.type !== 'user/message' && event.type !== 'assistant/message') || event.surfaceOp !== 'append') continue
+    messages++
+    if (messages >= maxMessages) {
+      start = event.sourceEventSeqs === undefined ? i : Math.min(i, ...event.sourceEventSeqs)
+      break
+    }
+  }
+  const records = log.slice(start, end).map((event): FixtureHistoryRecord => ({ type: 'event', event }))
+  return { records, hasMore: start > 0 }
+}
+
+/** Fixture mirror of host session-scoped attachment authorization. */
+function logReferencesAttachment(log: readonly SessionEvent[], attachmentId: string): boolean {
+  const visit = (value: unknown): boolean => {
+    if (Array.isArray(value)) return value.some(visit)
+    if (typeof value !== 'object' || value === null) return false
+    const record = value as Record<string, unknown>
+    if (record.attachmentId === attachmentId) return true
+    return Object.values(record).some(visit)
+  }
+  return log.some(event => visit(event.data))
+}
+
+/** Fixture mirror of first-party message extraction used by session-query. */
+function searchBlockText(block: ContentBlock): string[] {
+  switch (block.type) {
+    case 'text':
+      return [block.text]
+    case 'reasoning':
+      return []
+    case 'tool-call':
+      return [block.name, block.arguments]
+    default:
+      return []
+  }
+}
+
+/** One current-surface user/assistant document, if searchable. */
+function searchEventText(event: SessionEvent): string {
+  const content = event.type === 'user/message'
+    ? event.data.content
+    : event.type === 'assistant/message'
+      ? event.data.message.content
+      : undefined
+  if (content === undefined) return ''
+  return content.flatMap(searchBlockText).map(part => part.trim()).filter(Boolean).join('\n')
+}
+
+interface FixtureSearchToken {
+  value: string
+  /** Inclusive code-point offset in the whitespace-normalized display text. */
+  start: number
+  /** Exclusive code-point offset in the whitespace-normalized display text. */
+  end: number
+}
+
+/**
+ * Browser-safe approximation of SQLite FTS5 unicode61 token boundaries.
+ * Keeping phrase matching token-based prevents the development fixture from
+ * promising arbitrary within-token substring behavior that production lacks.
+ */
+function searchTokenSpans(value: string): { text: string; tokens: FixtureSearchToken[] } {
+  const text = value.replace(/\s+/gu, ' ').trim()
+  const characters = Array.from(text)
+  const tokens: FixtureSearchToken[] = []
+  let start: number | undefined
+  let raw = ''
+  const flush = (end: number): void => {
+    if (start !== undefined) {
+      const folded = raw.normalize('NFD').replace(/\p{M}+/gu, '').toLowerCase()
+      if (folded !== '') tokens.push({ value: folded, start, end })
+    }
+    start = undefined
+    raw = ''
+  }
+  for (let index = 0; index < characters.length; index++) {
+    const character = characters[index] as string
+    const tokenBase = character.normalize('NFD').replace(/\p{M}+/gu, '')
+    if (tokenBase === '') {
+      if (start !== undefined) raw += character
+      continue
+    }
+    if (/^[\p{L}\p{N}\p{Co}]+$/u.test(tokenBase)) {
+      start ??= index
+      raw += character
+    } else {
+      flush(index)
+    }
+  }
+  flush(characters.length)
+  return { text, tokens }
+}
+
+interface FixturePhraseMatch {
+  count: number
+  start: number
+  end: number
+}
+
+/** Count exact contiguous token-phrase occurrences and retain the first display span. */
+function phraseMatch(document: readonly FixtureSearchToken[], phrase: readonly string[]): FixturePhraseMatch {
+  if (phrase.length === 0 || phrase.length > document.length) return { count: 0, start: 0, end: 0 }
+  let count = 0
+  let firstStart = 0
+  let firstEnd = 0
+  for (let start = 0; start <= document.length - phrase.length; start++) {
+    if (!phrase.every((token, offset) => document[start + offset]?.value === token)) continue
+    count++
+    if (count === 1) {
+      firstStart = document[start]?.start ?? 0
+      firstEnd = document[start + phrase.length - 1]?.end ?? firstStart
+    }
+  }
+  return { count, start: firstStart, end: firstEnd }
+}
+
+/** Match-centered fixture excerpt, bounded by Unicode code points for the sidebar. */
+function searchSnippet(value: string, matchStart: number, matchEnd: number): string {
+  const characters = Array.from(value)
+  if (characters.length <= 120) return value
+  const boundedStart = Math.min(Math.max(0, matchStart), characters.length - 1)
+  const boundedEnd = Math.min(
+    characters.length,
+    Math.max(boundedStart + 1, matchEnd),
+  )
+  const center = Math.floor((boundedStart + boundedEnd) / 2)
+  let start = Math.min(
+    characters.length - 118,
+    Math.max(0, center - Math.floor(118 / 2)),
+  )
+  let end = start + 118
+  if (start === 0) {
+    end = 119
+  } else if (end === characters.length) {
+    start = characters.length - 119
+  }
+  return `${start > 0 ? '…' : ''}${characters.slice(start, end).join('')}${end < characters.length ? '…' : ''}`
+}
+
+interface FixtureSearchCandidate {
+  sessionId: SessionId
+  seq: number
+  time: number
+  text: string
+  matchCount: number
+  matchStart: number
+  matchEnd: number
+  documentLength: number
+}
+
+/** Mirrors `packages/session-query/session-query-sqlite/src/index.ts`; update both together. */
+function compareSearchCandidates(a: FixtureSearchCandidate, b: FixtureSearchCandidate): number {
+  if (a.matchCount !== b.matchCount) return b.matchCount - a.matchCount
+  if (a.documentLength !== b.documentLength) return a.documentLength - b.documentLength
+  if (a.time !== b.time) return b.time - a.time
+  if (a.sessionId !== b.sessionId) return a.sessionId < b.sessionId ? -1 : 1
+  return b.seq - a.seq
+}
+
+/**
+ * Current plan projection over the full log (host parallel: latest todo/write
+ * with no later turn/start; a new turn retires the previous plan).
+ */
+function backscanTodos(log: readonly SessionEvent[]): TodoItem[] | undefined {
+  for (let i = log.length - 1; i >= 0; i--) {
+    const event = log[i]
+    if (event === undefined) continue
+    if (event.type === 'turn/start') return undefined
+    if (event.type === 'todo/write') return event.data.todos
+  }
+  return undefined
+}
+
+/** Fixture-local mirror of the goal projection value (dsh-goal's GoalProjection shape). */
+interface FxGoalProjection {
+  goal: {
+    id: string
+    revision: number
+    objective: string
+    phase: 'active' | 'paused' | 'blocked' | 'complete'
+    maxGoalRounds: number
+  }
+  roundsStarted: number
+  createdAt: number
+  updatedAt: number
+}
+
+/** One durable goal change. */
+type FxGoalChange =
+  | { kind: 'goal/change'; version: 1; operation: 'clear'; cleared: { id: string; revision: number }; clearedAt: number }
+  | {
+    kind: 'goal/change'
+    version: 1
+    operation: 'create' | 'edit' | 'pause' | 'resume' | 'complete'
+    goal: FxGoalProjection['goal']
+    roundsStarted: number
+    createdAt: number
+    updatedAt: number
+  }
+
+/**
+ * Current goal projection over the full log (host parallel: the GoalService
+ * unit's last-wins fold of goal/change whole values; clear returns null).
+ */
+function backscanGoal(log: readonly SessionEvent[]): FxGoalProjection | null {
+  for (let i = log.length - 1; i >= 0; i--) {
+    const event = log[i]
+    if (event === undefined || event.type !== 'goal/change') continue
+    const change = event.data
+    if (change.operation === 'clear') return null
+    return { goal: change.goal, roundsStarted: change.roundsStarted, createdAt: change.createdAt, updatedAt: change.updatedAt }
+  }
+  return null
+}
+
+interface StreamConn<Value> {
+  push(value: Value): void
+}
+
+interface ReasoningChunkStormState {
+  sessionId: string
+  chunkCount: number
+  chunksPerInterval: number
+  intervalMs: number
+  emitted: number
+  marker: string
+  emitting: boolean
+}
+
+/**
+ * Text a fixture refusal carries where a Host would carry its own explanation.
+ *
+ * It names a credential, a path, and an address the reading page was never granted, so a page test
+ * can read the page back and prove the refusal it shows states its own reason instead of any of them.
+ */
+const FIXTURE_REFUSAL_DETAIL = 'token=FIXTURE_ONLY_NOT_A_REAL_CREDENTIAL'
+  + '; file=/private/unshared-fixture/credential.txt; url=https://internal.invalid/creds'
+
+/** Deterministic fixture branches used by keyless Web assembly tests. */
+export interface FixtureOptions {
+  /** Current source grant reported by the scripted Owner; absent grants authorize nothing. */
+  viewerSourceGrant?: () => FixtureViewerGrant
+  /** Hold Assistant output until completion or cancellation is explicitly driven by the test. */
+  controlledReply?: boolean
+  /** Start with no real Workspace or Session. */
+  empty?: boolean
+  /** Reject every prompt before appending its user event. */
+  rejectPrompt?: boolean
+  /**
+   * Stable code that rejection carries, so a page's own copy for a reason it knows is exercised
+   * against the assembled page. Defaults to the transport's own busy refusal.
+   */
+  rejectPromptCode?: string
+  /**
+   * Refuse every cancel with this stable code, so a page's own copy for the reason it knows is
+   * exercised on the one action a running Session offers.
+   */
+  cancelRefusal?: string
+  /** Publish the Session but fail its Workspace account write. */
+  failWorkspaceAttach?: boolean
+  /** Publish and frame the Session, then throw instead of returning create. */
+  dropSessionCreateResponse?: boolean
+  /** Order of the two successful create frames. */
+  createFrameOrder?: 'session-first' | 'workspace-first'
+  /** Announce one Agent write to `notes/demo.txt` shortly after a `workspaceFiles/changes` stream opens. */
+  fileChanges?: boolean
+  /**
+   * Present a fork as the reading viewer's own branch of the shared Session: the child carries the
+   * branch facts a Host publishes for a viewer's fork, so the client exercises the deployed shape.
+   */
+  viewerFork?: boolean
+  /**
+   * Refuse every fork with this stable code, so a page's own handling of a refused branch — the
+   * reason it states and the view it leaves alone — is exercised against the assembled page.
+   */
+  forkRefusal?: string
+  /**
+   * Present the viewer's own branch already running, so the page shows the one run it may cancel:
+   * the branch it created. `cancel` then ends it, exactly as the Host would.
+   */
+  forkRunning?: boolean
+  /** Have one fixture turn declare workspace files for the Host desktop, as the `present` tool does. */
+  presented?: boolean
+}
+
+/** File observation payload, mirrored so this Client fixture names no Host package. */
+type FixtureWorkspaceFileChange =
+  | { readonly absolutePath: string; readonly version: string }
+  | { readonly absolutePath: string; readonly absent: true }
+
+/** Host subscription acknowledgement followed by file observations. */
+type FixtureWorkspaceFileWatchFrame =
+  | { readonly kind: 'ready' }
+  | { readonly kind: 'change'; readonly change: FixtureWorkspaceFileChange }
+
+/** Inbox pump shared by both stream generators (FrameQueue pattern: ONE abort listener hung
+ *  outside the loop — a per-iteration {once:true} listener never fires for non-final rounds and
+ *  piles up for the stream's lifetime). breakNow force-ends the stream without the
+ *  client's signal (timing hook: simulated connection loss). */
+class FxInbox<Value> implements StreamConn<Value> {
+  private readonly inbox: Value[] = []
+  private wake: (() => void) | null = null
+  private broken = false
+
+  push(value: Value): void {
+    this.inbox.push(value)
+    this.wake?.()
+  }
+
+  breakNow(): void {
+    this.broken = true
+    this.wake?.()
+  }
+
+  /** Read through a method: breakNow()/abort flip state across yields, so narrowing from the loop condition must not stick. */
+  private isLive(signal: AbortSignal): boolean {
+    return !signal.aborted && !this.broken
+  }
+
+  async *drain(signal: AbortSignal): AsyncGenerator<Value> {
+    const onAbort = (): void => this.wake?.()
+    signal.addEventListener('abort', onAbort)
+    try {
+      while (this.isLive(signal)) {
+        while (this.inbox.length > 0) yield this.inbox.shift() as Value
+        if (!this.isLive(signal)) break
+        await new Promise<void>((resolve) => {
+          this.wake = resolve
+        })
+        this.wake = null
+      }
+    } finally {
+      signal.removeEventListener('abort', onAbort)
+    }
+  }
+}
+
+/** Fixture RPC face over one in-memory state graph. */
+export interface FixtureWorld {
+  /** Generic Remote caller for the endpoints business services own. */
+  readonly rpc: ClientConnectionRpc
+  /** Prompt requests accepted at the scripted Owner transport, including their exact correlation ids. */
+  readonly prompts: readonly Parameters<FixtureSessionApi['prompt']>[0][]
+  /** Session ids addressed by Stop. */
+  readonly cancellations: readonly SessionId[]
+  /** Publish the changes of the current Owner grant set through the `remoteAccess/follow` stream. */
+  refreshGrants(): void
+  /** Read a copy of one scripted Owner's durable log. @param sessionId - Session to inspect. @returns Durable events. */
+  history(sessionId: string): readonly SessionEvent[]
+  /** Complete a held Assistant reply. @param sessionId - Session whose reply is held. */
+  completeReply(sessionId: string): void
+  /** Stop fixture producers and restore the fixture-owned timing global. */
+  dispose(): void
+}
+
+/**
+ * Build the fixture RPC face over one in-memory state graph.
+ * @param options - fixture branches for empty state and failure timing.
+ * @returns the Remote RPC face.
+ */
+export function createFixtureFaces(options: FixtureOptions = {}): FixtureWorld {
+  return createFixtureWorld(options)
+}
+
+/** Build the fixture's Remote RPC face over one state graph. */
+function createFixtureWorld(options: FixtureOptions): FixtureWorld {
+  // The resident fixture sessions all carry history, so none of them is blank.
+  const sessions: FixtureSessionSummary[] = options.empty ? [] : [
+    { sessionId: sid('fx-alpha'), updatedAt: Date.now(), running: true, blank: false, cwd: '/tmp/fixture' },
+  ]
+  const logs = new Map<SessionId, SessionEvent[]>([[sid('fx-alpha'), buildAlphaLog(options.presented === true)]])
+  const goalActivations = new Map<SessionId, 'armed' | 'disarmed'>()
+  const modelSelections = new Map<SessionId, ModelSelection>(sessions.map(session => [
+    session.sessionId,
+    { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
+  ]))
+  const attachments = new Map<string, { attachment: ImageAttachmentRef; data: string }>([[
+    String(FIXTURE_IMAGE_REF.attachmentId),
+    { attachment: FIXTURE_IMAGE_REF, data: FIXTURE_IMAGE_DATA },
+  ]])
+  /** Credential store double: set/unset flip the describe badge, values never read back. */
+  const fixtureCredentials = new Map<string, true>([
+    // The assembled fixture represents an already-configured shipped
+    // DeepSeek route so unrelated GUI journeys do not enter first-run setup.
+    ['DEEPSEEK_API_KEY', true],
+  ])
+
+  /** Canonical fixture implementation of the generated Settings Remote contract. */
+  const settingsRemotes = {
+    // Only the resolved DeepSeek address needed by first-run readiness is
+    // represented here. Fixture-backed journeys do not open its Models editor;
+    // real schema-driven forms ride the HTTP transport.
+    describe(): RpcResult<SettingsDescribeValue> {
+      return {
+        ok: true,
+        value: {
+          writable: true,
+          hasDocument: true,
+          namespaces: [{
+            ns: 'llm-deepseek',
+            autoGenerate: true,
+            schema: {},
+            value: { apiKeyEnv: 'DEEPSEEK_API_KEY' },
+            applies: 'live',
+            secrets: [{ path: ['apiKey'], set: false }],
+            revision: 0,
+          }],
+        },
+      }
+    },
+    update(ns: string): ConnectionRpcResult<SettingsNamespaceView> {
+      return {
+        ok: false,
+        error: {
+          code: 'settings/rejected',
+          message: 'fixture: the minimal readiness settings descriptor is read-only',
+          details: { ns },
+        },
+      }
+    },
+    replace(ns: string): ConnectionRpcResult<SettingsNamespaceView> {
+      return {
+        ok: false,
+        error: {
+          code: 'settings/rejected',
+          message: 'fixture: the minimal readiness settings descriptor is read-only',
+          details: { ns },
+        },
+      }
+    },
+    mutate(ns: string): ConnectionRpcResult<SettingsNamespaceView> {
+      // A Remote failure code is free-form, unlike the unary error vocabulary.
+      return {
+        ok: false,
+        error: {
+          code: 'settings/rejected',
+          message: 'fixture: no settings namespaces are registered',
+          details: { ns },
+        },
+      }
+    },
+    openSettingsDocument(): RpcResult<{ opened: true }> {
+      return { ok: true, value: { opened: true } }
+    },
+    openAgentPresetDirectory(agentPreset: string): RpcResult<
+      { opened: true } | { opened: false; path: string }
+    > {
+      const existing = fixturePresets.get(agentPreset)
+      if (existing === undefined || existing.trust === 'system') {
+        return {
+          ok: false,
+          error: {
+            code: 'agent-preset/read-only',
+            message: `agent preset "${agentPreset}" ships with the deployment`,
+            details: { agentPreset, reason: 'it ships with the deployment' },
+          },
+        }
+      }
+      return { ok: true, value: { opened: true } }
+    },
+  }
+
+  const credentialRemotes = {
+    describe(refs: readonly string[]): RpcResult<Record<string, CredentialInfo>> {
+      return {
+        ok: true,
+        value: Object.fromEntries(refs.map(ref => [ref, {
+          configured: fixtureCredentials.has(ref),
+          ...fixtureCredentials.has(ref) ? { source: 'file' } : {},
+          writable: true,
+        }])),
+      }
+    },
+    set(ref: string): RpcResult<void> {
+      fixtureCredentials.set(ref, true)
+      return { ok: true, value: undefined }
+    },
+    unset(ref: string): RpcResult<void> {
+      fixtureCredentials.delete(ref)
+      return { ok: true, value: undefined }
+    },
+  }
+
+  /**
+   * Preset compositions the fixture serves. Held as state rather than
+   * constants so the settings editor's save and delete are exercisable: the
+   * roster a GUI journey sees after writing is the text it wrote.
+   */
+  const fixturePresets = new Map<string, { trust: 'system' | 'user'; content: string }>([
+    ['standard', { trust: 'system', content: "- id: tool-bash\n  name: '@deepseek-ai/dsh-tool-bash'\n" }],
+    ['minimal', { trust: 'system', content: "- id: tool-web-search\n  name: '@deepseek-ai/dsh-tool-web-search'\n" }],
+    ['my-agent', { trust: 'user', content: "- id: tool-read\n  name: '@deepseek-ai/dsh-tool-read'\n" }],
+  ])
+  let fixtureDefaultPreset = 'standard'
+  const nextTurn = new Map<SessionId, number>([[sid('fx-alpha'), 75]])
+  let nextSession = 1
+  // Workspace entities mirroring the host registry: the fixture sessions all
+  // live under one workspace, whose account carries them in attach order.
+  const wid = (raw: string): WorkspaceId => raw as WorkspaceId
+  const fixtureEpoch = new Date(Date.now() - 300_000).toISOString()
+  const FIXTURE_HOME = '/home/fixture'
+  const workspaces: FixtureWorkspace[] = options.empty ? [] : [{
+    workspaceId: wid('fx-ws-fixture'),
+    path: '/tmp/fixture',
+    title: 'fixture',
+    sessionIds: [sid('fx-alpha')],
+    createdAt: fixtureEpoch,
+    updatedAt: fixtureEpoch,
+  }, {
+    workspaceId: wid('fx-ws-home'),
+    path: `${FIXTURE_HOME}/Documents/project`,
+    title: 'project',
+    sessionIds: [],
+    createdAt: fixtureEpoch,
+    updatedAt: fixtureEpoch,
+  }]
+  let nextWorkspace = 1
+  // Registry-global archive set mirroring the host: archived sessions keep
+  // their workspace accounting slot and only grouping surfaces hide them.
+  const archivedSessionIds: SessionId[] = []
+  // Registry-global pin set, most recently pinned first; this fixture never pins.
+  const pinnedSessionIds: SessionId[] = []
+  const workspaceSnapshot = (workspace: FixtureWorkspace): WorkspaceView => ({
+    ...workspace,
+    sessionIds: [...workspace.sessionIds],
+  })
+  const workspaceBaseline = (): Extract<WorkspaceFollowFrame, { type: 'baseline' }> => ({
+    type: 'baseline',
+    value: {
+      items: workspaces.map(workspaceSnapshot),
+      archivedSessionIds: [...archivedSessionIds],
+      pinnedSessionIds: [...pinnedSessionIds],
+    },
+  })
+
+  // In-memory browse tree behind the fixture's `browse` picker capability —
+  // deterministic content mirroring the design mock so assembled Web tests
+  // and snapshots can walk it. Leaves are materialized lazily: a child listed
+  // by its parent lists as empty until something is created inside it.
+  const directoryTree = new Map<string, string[]>([
+    ['/', ['home']],
+    ['/home', ['fixture']],
+    [FIXTURE_HOME, ['Documents', 'Downloads', '.config']],
+    [`${FIXTURE_HOME}/Documents`, [
+      'project', 'deepseek-iOS', 'deepseek-android', 'deepseek-platform',
+      'deepseek-web', 'deepseek-harness', 'deepseek-app', 'deepseek-landing-blog',
+    ]],
+  ])
+  const childrenOf = (path: string): string[] | undefined => {
+    const known = directoryTree.get(path)
+    if (known !== undefined) return known
+    const parent = path.slice(0, path.lastIndexOf('/')) || '/'
+    const name = path.slice(path.lastIndexOf('/') + 1)
+    return directoryTree.get(parent)?.includes(name) === true ? [] : undefined
+  }
+  const crumbsOf = (path: string): { name: string; path: string; hidden: boolean }[] => {
+    const crumbs = [{ name: '/', path: '/', hidden: false }]
+    let acc = ''
+    for (const segment of path.split('/').filter(Boolean)) {
+      acc += `/${segment}`
+      crumbs.push({ name: segment, path: acc, hidden: false })
+    }
+    return crumbs
+  }
+  /** Resident waterfalls retain their event ids across Remote Event generations. */
+  const pendingApprovalEventId = 'fx-interaction-approval'
+  let approvalPending = !options.empty
+  const pendingQuestionEventId = 'fx-interaction-question'
+  let questionPending = !options.empty
+  const fixtureQuestions: readonly FixtureQuestionItem[] = [
+    {
+      id: 'harness-profile',
+      header: '偏好',
+      question: '你现在更想招哪类 Agent/Harness 候选人？',
+      options: [
+        { label: '工程落地型 (Recommended)', description: '更看重能直接做 runtime、tool executor、sandbox、trace 和线上问题排查。' },
+        { label: '研究潜力型', description: '更看重 Agent 理解、训练评测思路和长期成长空间。' },
+        { label: '均衡型', description: '同时要求工程能力和 Agent 认知，但可能筛选门槛更高。' },
+      ],
+    },
+    {
+      id: 'work-mode',
+      header: '方式',
+      question: '你希望候选人优先展示哪种工作方式？',
+      options: [
+        { label: '先做小型原型 (Recommended)', description: '用可运行结果尽快验证关键假设。' },
+        { label: '先写完整设计', description: '先收敛边界、协议和风险，再开始实现。' },
+      ],
+    },
+    {
+      id: 'signals',
+      header: '信号',
+      question: '哪些面试信号最重要？',
+      detail: '按当前招聘目标选择；跳过则视为不设偏好。',
+      multiSelect: true,
+      options: [
+        { label: '系统设计' },
+        { label: '代码质量' },
+        { label: 'Agent 产品判断' },
+      ],
+    },
+  ]
+
+  const controlConns = new Set<StreamConn<FixtureControlFrame>>()
+  const followConns = new Map<SessionId, Set<StreamConn<FixtureFollowEventFrame>>>()
+  interface FixtureAttemptState {
+    readonly attemptId: ReturnType<typeof LlmAttemptId>
+    readonly startedAfterSeq: number
+    readonly turn: number
+    readonly step: number
+    readonly stream: AssistantStreamAccumulator
+    index: number
+  }
+  const activeAttempts = new Map<SessionId, FixtureAttemptState>()
+  const assistantRevisions = new Map<SessionId, number>()
+  const workspaceConns = new Set<StreamConn<WorkspaceFollowFrame>>()
+  const remoteEventConns = new Map<string, StreamConn<FixtureRemoteEventFrame>>()
+  const emitControl = (frame: FixtureControlFrame): void => {
+    for (const conn of controlConns) conn.push(frame)
+  }
+  const emitWorkspace = (frame: Exclude<WorkspaceFollowFrame, { type: 'baseline' }>): void => {
+    for (const conn of workspaceConns) conn.push(frame)
+  }
+  const emitRemote = (event: string, args: readonly unknown[]): void => {
+    for (const conn of remoteEventConns.values()) conn.push({ type: 'emit', event, args })
+  }
+  const emitRemoteFrame = (frame: FixtureRemoteEventFrame): void => {
+    for (const conn of remoteEventConns.values()) conn.push(frame)
+  }
+  const emitFollow = (sessionId: SessionId, entry: FixtureHistoryEntry): void => {
+    for (const conn of followConns.get(sessionId) ?? []) conn.push(entry)
+  }
+  const emitAssistant = (sessionId: SessionId, frame: FixtureAssistantStreamFrame): void => {
+    for (const conn of followConns.get(sessionId) ?? []) conn.push({ type: 'assistant-stream', frame })
+  }
+  const nextAssistantRevision = (sessionId: SessionId): number => {
+    const revision = (assistantRevisions.get(sessionId) ?? 0) + 1
+    assistantRevisions.set(sessionId, revision)
+    return revision
+  }
+  const beginAssistant = (sessionId: SessionId, turn: number, step: number): FixtureAttemptState => {
+    const attemptId = LlmAttemptId(`${sessionId}:fixture:${String(nextAssistantRevision(sessionId))}`)
+    const lastSeq = logOf(sessionId).length - 1
+    const startedAfterSeq = lastSeq < 0 ? -1 : SessionSeq(lastSeq)
+    const attempt = {
+      attemptId, startedAfterSeq, turn, step,
+      stream: new AssistantStreamAccumulator(), index: 0,
+    }
+    activeAttempts.set(sessionId, attempt)
+    emitAssistant(sessionId, {
+      type: 'start', attemptId, revision: assistantRevisions.get(sessionId) as number,
+      startedAfterSeq, turn, step,
+    })
+    return attempt
+  }
+  const pushAssistant = (sessionId: SessionId, chunk: StreamChunk): void => {
+    const attempt = activeAttempts.get(sessionId)
+    if (attempt === undefined) throw new Error(`fixture: no active Assistant attempt for ${sessionId}`)
+    const timed = attempt.stream.push({ time: Date.now(), chunk })
+    emitAssistant(sessionId, {
+      type: 'chunk', attemptId: attempt.attemptId, revision: nextAssistantRevision(sessionId),
+      index: attempt.index++, time: timed.time, chunk: timed.chunk,
+    })
+  }
+  const commitAssistant = (sessionId: SessionId, event: SessionEvent): void => {
+    const attempt = activeAttempts.get(sessionId)
+    if (attempt === undefined) throw new Error(`fixture: no active Assistant attempt for ${sessionId}`)
+    activeAttempts.delete(sessionId)
+    emitAssistant(sessionId, {
+      type: 'end', attemptId: attempt.attemptId, revision: nextAssistantRevision(sessionId),
+      index: attempt.index,
+      outcome: {
+        kind: 'committed',
+        eventType: event.type === 'assistant/message' ? 'assistant/message' : 'assistant/attempt',
+        seq: event.seq,
+      },
+    })
+  }
+
+  function sessionOk<T>(value: T): Promise<ConnectionRpcResult<T>> {
+    return Promise.resolve({ ok: true, value })
+  }
+
+  function sessionErr<T>(error: ConnectionRpcFailure): Promise<ConnectionRpcResult<T>> {
+    return Promise.resolve({ ok: false, error })
+  }
+
+  const prompts: Parameters<FixtureSessionApi['prompt']>[0][] = []
+  const cancellations: SessionId[] = []
+  const childGrants = new Map<SessionId, FixtureViewerGrant>()
+  const grantOf = (id: SessionId): FixtureViewerGrant | undefined => {
+    if (id === sid('fx-alpha')) return options.viewerSourceGrant?.()
+    const child = childGrants.get(id)
+    if (child === undefined) return undefined
+    const source = options.viewerSourceGrant?.()
+    if (source === undefined || !['view', 'fork-readonly', 'write'].includes(source.sessionMode)) {
+      return { sessionMode: 'view' }
+    }
+    if (source.sessionMode === 'view') {
+      const revoked = { sessionMode: 'view', sessionModeReason: 'fork-source-revoked' }
+      childGrants.set(id, revoked)
+      return revoked
+    }
+    return child
+  }
+  /**
+   * The Session grants the owner's share policy answers for this reader: the shared Session branches
+   * in every mode beyond `view` and is written only in `write`; a branch the reader made is written
+   * while its own mode allows it. A Session the reader holds no grant for is absent.
+   */
+  const grantsOf = (): ReadonlyMap<string, RemoteAccessGrant> => new Map(sessions.flatMap((summary) => {
+    const grant = grantOf(summary.sessionId)
+    if (grant === undefined) return []
+    const source = summary.sessionId === sid('fx-alpha')
+    const writes = source
+      ? grant.sessionMode === 'write' ? ['session/cancel', 'session/fork', 'session/prompt']
+        : grant.sessionMode === 'fork-readonly' ? ['session/fork'] : []
+      : grant.sessionMode === 'view' ? [] : ['session/cancel', 'session/prompt']
+    const actions = [...FIXTURE_SESSION_READS, ...writes].sort()
+    return [[summary.sessionId, { resource: { kind: 'session', id: summary.sessionId }, actions }] as const]
+  }))
+  /** Open access streams and the Session grants each one last delivered. */
+  const accessConns = new Map<StreamConn<RemoteAccessFrame>, ReadonlyMap<string, RemoteAccessGrant>>()
+  const refreshGrants = (): void => {
+    const next = grantsOf()
+    for (const [conn, delivered] of accessConns) {
+      for (const [id, grant] of next) {
+        if (JSON.stringify(delivered.get(id)) !== JSON.stringify(grant)) conn.push({ type: 'upsert', grant })
+      }
+      for (const [id, grant] of delivered) {
+        if (!next.has(id)) conn.push({ type: 'remove', resource: grant.resource })
+      }
+      accessConns.set(conn, next)
+    }
+  }
+  const summaryOf = (id: SessionId): FixtureSessionSummary | undefined => sessions.find(s => s.sessionId === id)
+  /**
+   * One Session row as the viewer page receives it: a fork this viewer created carries its branch
+   * facts as that row's projection hints, where the shared Session summary states none.
+   */
+  const viewerRow = (summary: FixtureSessionSummary): FixtureSessionSummary => {
+    if (summary.forkLineage === undefined) return summary
+    return {
+      ...summary,
+      projections: {
+        kind: 'sequenced',
+        asOfSeq: (logs.get(summary.sessionId) ?? []).length - 1,
+        values: { ...summary.projections?.values, forkLineage: summary.forkLineage },
+      },
+    }
+  }
+  /**
+   * One Session's projection values as the viewer page receives them: the branch facts are added to
+   * every block that states that Session's projections, so opening the branch keeps them.
+   */
+  const viewerProjectionValues = (summary: FixtureSessionSummary): Record<string, unknown> => ({
+    ...projectionValuesOf(logs.get(summary.sessionId) ?? []),
+    ...(summary.forkLineage === undefined ? {} : { forkLineage: summary.forkLineage }),
+  })
+  const requireRemoteSession = (
+    request: { readonly sessionId: SessionId },
+  ): Promise<ConnectionRpcResult<never>> | undefined => {
+    if (summaryOf(request.sessionId) !== undefined) return undefined
+    return sessionErr({
+      code: 'session/not-found',
+      message: `no session ${request.sessionId}`,
+      details: { sessionId: request.sessionId },
+    })
+  }
+  const setRunning = (id: SessionId, running: boolean): void => {
+    const summary = summaryOf(id)
+    if (summary === undefined || summary.running === running) return
+    summary.running = running
+    emitRemote('api-session/status', [id, running])
+  }
+  const logOf = (id: SessionId): SessionEvent[] => {
+    let log = logs.get(id)
+    if (log === undefined) {
+      log = []
+      logs.set(id, log)
+    }
+    return log
+  }
+  const append = (id: SessionId, e: FixtureStoredEventInput): SessionEvent => {
+    const log = logOf(id)
+    const event = withEnvelope({ ...e, time: Date.now() }, SessionSeq(log.length))
+    log.push(event)
+    emitFollow(id, { type: 'event', event })
+    // Host eager-drive parallel: a unit-advancing event pushes its finished value.
+    for (const frame of projectionFramesOf(id, log, event)) emitControl(frame)
+    if (event.type === 'user/message' && event.data.source.kind === 'user') {
+      const summary = summaryOf(id)
+      if (summary !== undefined) summary.updatedAt = event.time
+      emitRemote('api-session/activity', [id, event.time])
+    }
+    return event
+  }
+
+  /** Append one durable goal/change (host GoalService parallel). */
+  const appendGoalChange = (id: SessionId, change: FxGoalChange): FxGoalProjection => {
+    const log = logOf(id)
+    append(id, {
+      type: 'goal/change',
+      data: change,
+    })
+    return backscanGoal(log) as FxGoalProjection
+  }
+
+  /** Update process-local goal activation and publish the forwarded edge. */
+  const setGoalActivation = (id: SessionId, activation: 'armed' | 'disarmed'): void => {
+    const current = backscanGoal(logOf(id))
+    if (current === null) {
+      if (!goalActivations.delete(id)) return
+      emitRemote('goal/activation-changed', [{ sessionId: id }])
+      return
+    }
+    const previous = goalActivations.get(id)
+    goalActivations.set(id, activation)
+    if (previous === activation) return
+    emitRemote('goal/activation-changed', [{
+      sessionId: id,
+      goal: { id: current.goal.id, revision: current.goal.revision, activation },
+    }])
+  }
+
+  type FxGoalRef = { id: string; revision: number }
+  type FxGoalView = FxGoalProjection['goal'] & {
+    roundsStarted: number
+    createdAt: number
+    updatedAt: number
+    activation: 'armed' | 'disarmed'
+  }
+
+  const goalFailure = <T>(message: string): RpcResult<T> => ({
+    ok: false,
+    error: { code: 'gateway/internal', message, details: {} },
+  })
+
+  const requireGoalSession = (id: SessionId): RpcResult<never> | undefined => (
+    summaryOf(id) === undefined
+      ? { ok: false, error: { code: 'session/not-found', message: `no session ${id}`, details: { sessionId: id } } }
+      : undefined
+  )
+
+  /** Canonical fixture implementation of the generated Commands Remote contract. */
+  const commandRemotes = {
+    list(id: SessionId): RpcResult<readonly CommandDescriptor[]> {
+      const missing = requireGoalSession(id)
+      if (missing !== undefined) return missing
+      return {
+        ok: true,
+        value: [
+          { name: 'compact', description: 'fixture：压缩当前会话上下文' },
+          { name: 'echo', description: 'fixture：回显参数', input: { hint: 'text to echo' } },
+          { definitionId: brandString<CommandDefinitionId>('@deepseek-ai/dsh-command-goal'), name: 'goal', description: 'Set or view the goal for a long-running task', input: { hint: '<objective>', attachments: true } },
+          { definitionId: brandString<CommandDefinitionId>('@deepseek-ai/dsh-permission-presets'), name: 'permission', description: 'Switch the permission preset (sandbox mode + approval policy)', input: { hint: '<preset>' } },
+          { definitionId: brandString<CommandDefinitionId>('@deepseek-ai/dsh-plan-mode'), name: 'plan', description: 'Enter or leave plan mode', input: { hint: '[off|message]', attachments: true } },
+        ],
+      }
+    },
+    execute(id: SessionId, line: string, attachments: readonly unknown[] = []): RpcResult<CommandExecution | undefined> {
+      const missing = requireGoalSession(id)
+      if (missing !== undefined) return missing
+      // Structured split mirroring the Host parser: name + verbatim rawInput
+      // (separator whitespace included) — the run payload carries no line.
+      const match = /^\/(\S+)((?:\s.*)?)$/.exec(line.trim())
+      const name = match?.[1]
+      const args = match?.[2] ?? ''
+      // Mirror the Host image policy AFTER command resolution, matching the
+      // executor's order (an unknown name answers undefined and logs no
+      // lifecycle): the declaration rejection covers every known command
+      // without `input.attachments`, and the two producer grammar rejections cover
+      // the declaring commands' control-only lines. The fixture stores no
+      // bytes, so an accepted batch is acknowledged and dropped.
+      const known = ['permission', 'goal', 'compact', 'echo', 'plan']
+      if (attachments.length > 0 && name !== undefined && known.includes(name)) {
+        const rejection = name !== 'goal' && name !== 'plan'
+          ? `/${name} does not accept attachments`
+          : name === 'goal' && args.trim() === ''
+            ? 'Attachments only accompany a goal objective: /goal <objective> or /goal edit <objective>.'
+            : name === 'plan' && args.trim() === 'off'
+              ? 'Attachments cannot accompany /plan off.'
+              : undefined
+        if (rejection !== undefined) {
+          const commandId = `fx-cmd-${logOf(id).length}` as CommandId
+          append(id, { type: 'command/run', data: { commandId, name, args, source: { kind: 'user' } } })
+          const result: CommandResult = { kind: 'error', text: rejection }
+          append(id, { type: 'command/done', data: { commandId, ...result } })
+          return { ok: true, value: { commandId, result } }
+        }
+      }
+      if (name === 'permission') {
+        const preset = args.trim()
+        const commandId = `fx-cmd-${logOf(id).length}` as CommandId
+        append(id, { type: 'command/run', data: { commandId, name, args, source: { kind: 'user' } } })
+        const spec = PERMISSION_PRESETS[preset]
+        let result: CommandResult
+        if (preset === '') {
+          const current = permissionSelectOf(logOf(id)).currentValue
+          result = { kind: 'success', text: `current preset ${current} (available: ${Object.keys(PERMISSION_PRESETS).join(', ')})` }
+        } else if (spec === undefined) {
+          result = { kind: 'error', text: `unknown preset "${preset}" (available: ${Object.keys(PERMISSION_PRESETS).join(', ')})` }
+        } else {
+          if (permissionSelectOf(logOf(id)).currentValue !== preset) append(id, { type: 'permission/preset', data: { preset } })
+          append(id, { type: 'sandbox/mode', data: { mode: spec.sandbox } })
+          append(id, { type: 'approval/policy', data: { policy: spec.approval } })
+          result = { kind: 'success', text: `preset ${preset}` }
+        }
+        append(id, { type: 'command/done', data: { commandId, ...result } })
+        return { ok: true, value: { commandId, result } }
+      }
+      if (name === 'goal') {
+        const commandId = `fx-cmd-${logOf(id).length}` as CommandId
+        append(id, { type: 'command/run', data: { commandId, name, args, source: { kind: 'user' } } })
+        const objective = args.trim()
+        const current = backscanGoal(logOf(id))
+        let text: string
+        if (objective === '') {
+          text = current === null ? 'No goal is set. Usage: /goal <objective>' : `Current goal: ${current.goal.objective}`
+        } else if (current !== null && current.goal.phase !== 'complete') {
+          text = `A goal already exists (${current.goal.objective}). Clear it first.`
+        } else {
+          const created = appendGoalChange(id, {
+            kind: 'goal/change', version: 1, operation: 'create',
+            goal: { id: `fx-goal-${logOf(id).length}`, revision: 1, objective, phase: 'active', maxGoalRounds: 256 },
+            roundsStarted: 0, createdAt: Date.now(), updatedAt: Date.now(),
+          })
+          setGoalActivation(id, 'armed')
+          text = `Goal created: ${created.goal.objective}`
+        }
+        const result: CommandResult = { kind: 'success', text }
+        append(id, { type: 'command/done', data: { commandId, ...result } })
+        return { ok: true, value: { commandId, result } }
+      }
+      const running = summaryOf(id)?.running === true
+      const outcomes: Record<string, string> = {
+        compact: 'fixture：已压缩（假动作）',
+        echo: args.trim(),
+        plan: args.trim() === 'off'
+          ? (running ? 'Leaving plan mode (applies from the next step).' : 'Plan mode off.')
+          : (running
+            ? 'Entering plan mode (applies from the next step). Use /plan off to leave.'
+            : 'Plan mode on. Use /plan off to leave.'),
+      }
+      const text = name === undefined ? undefined : outcomes[name]
+      if (name === undefined || text === undefined) return { ok: true, value: undefined }
+      const commandId = `fx-cmd-${logOf(id).length}` as CommandId
+      append(id, { type: 'command/run', data: { commandId, name, args, source: { kind: 'user' } } })
+      if (name === 'plan' && !running) {
+        const plan = foldPlan(logOf(id))
+        if (plan.wanted !== null && plan.wanted !== plan.active) {
+          append(id, { type: 'plan/mode', data: { active: plan.wanted } })
+        }
+      }
+      const result: CommandResult = { kind: 'success', ...text === '' ? {} : { text } }
+      append(id, { type: 'command/done', data: { commandId, ...result } })
+      return { ok: true, value: { commandId, result } }
+    },
+  }
+
+  const goalView = (id: SessionId, projection: FxGoalProjection): FxGoalView => ({
+    ...projection.goal,
+    roundsStarted: projection.roundsStarted,
+    createdAt: projection.createdAt,
+    updatedAt: projection.updatedAt,
+    activation: goalActivations.get(id) ?? (projection.goal.phase === 'active' ? 'armed' : 'disarmed'),
+  })
+
+  /** Canonical fixture implementation of the generated Goal Remote contract. */
+  /** Canonical fixture implementation of the generated reference-discovery Remote contracts. */
+  const referenceRemotes = {
+    files(id: SessionId, query: string): RpcResult<{ path: string; kind: 'file' | 'directory' }[]> {
+      const missing = requireGoalSession(id)
+      if (missing !== undefined) return missing
+      const needle = query.toLocaleLowerCase()
+      const items = [
+        { path: 'notes', kind: 'directory' as const },
+        { path: 'README.md', kind: 'file' as const },
+        { path: 'notes/demo.txt', kind: 'file' as const },
+      ].filter(item => item.path.toLocaleLowerCase().includes(needle))
+      return { ok: true, value: items }
+    },
+    sessions(id: SessionId, query: string): RpcResult<{
+      sessionId: SessionId
+      label: string
+      cwd?: string
+      createdAt: number
+      mention: string
+    }[]> {
+      const missing = requireGoalSession(id)
+      if (missing !== undefined) return missing
+      const needle = query.toLocaleLowerCase()
+      const value = sessions
+        .filter(item => item.sessionId !== id)
+        .filter(item => String(item.sessionId).toLocaleLowerCase().includes(needle)
+          || item.cwd?.toLocaleLowerCase().includes(needle) === true)
+        .map((item) => {
+          const label = item.sessionId === sid('fx-beta') ? 'Fixture child session' : String(item.sessionId)
+          const encoded = btoa(JSON.stringify(item.sessionId))
+            .replaceAll('+', '-')
+            .replaceAll('/', '_')
+            .replace(/=+$/u, '')
+          return {
+            sessionId: item.sessionId,
+            label,
+            ...item.cwd === undefined ? {} : { cwd: item.cwd },
+            createdAt: item.updatedAt,
+            mention: `@[${label}](dsh-session:${encoded})`,
+          }
+        })
+      return { ok: true, value }
+    },
+  }
+
+  /**
+   * Workspace text reads under `?fixture`.
+   *
+   * The sample content is deliberately more than one shape: the panel's states
+   * (text, oversized, unreadable) are only demonstrable if the fixture can
+   * produce each of them, and a preview that can only ever succeed hides its
+   * own failure rendering.
+   */
+  // The Session workspace the replayed conversation writes into: `list` walks a
+  // fixed tree under it so the file-tree tab has directories, files, one entry
+  // of neither kind, and one cut listing to draw.
+  const WORKSPACE_FILES_ROOT = '/tmp/fixture'
+  type FixtureWorkspaceEntry = { name: string; type: 'file' | 'directory' | 'other'; size?: number }
+  const workspaceFileTree = new Map<string, FixtureWorkspaceEntry[]>([
+    ['', [
+      { name: '.gitignore', type: 'file', size: 24 },
+      { name: 'dev.sock', type: 'other' },
+      { name: 'notes', type: 'directory' },
+      { name: 'package.json', type: 'file', size: 512 },
+      { name: 'README.md', type: 'file', size: 640 },
+      { name: 'src', type: 'directory' },
+    ]],
+    ['notes', [
+      { name: 'demo.txt', type: 'file', size: 14 },
+      { name: 'new-demo.txt', type: 'file', size: 14 },
+    ]],
+    ['src', [
+      { name: 'config.ts', type: 'file', size: 211 },
+      { name: 'index.ts', type: 'file', size: 88 },
+      { name: 'lib', type: 'directory' },
+    ]],
+    ['src/lib', Array.from({ length: 24 }, (_, index) => ({
+      name: `module-${String(index + 1).padStart(2, '0')}.ts`,
+      type: 'file' as const,
+      size: 96 + index,
+    }))],
+  ])
+  /** Resolve a `list` argument to its workspace-relative path, or undefined when it leaves the root. */
+  const workspaceFilePath = (path: string): string | undefined => {
+    const segments: string[] = []
+    for (const segment of (path.startsWith('/') ? path : `${WORKSPACE_FILES_ROOT}/${path}`).split('/')) {
+      if (segment === '' || segment === '.') continue
+      if (segment === '..') {
+        segments.pop()
+        continue
+      }
+      segments.push(segment)
+    }
+    const absolute = `/${segments.join('/')}`
+    if (absolute !== WORKSPACE_FILES_ROOT && !absolute.startsWith(`${WORKSPACE_FILES_ROOT}/`)) return undefined
+    return absolute.slice(WORKSPACE_FILES_ROOT.length + 1)
+  }
+  // Page cap mirrored from the Host default so an over-limit request fails here too.
+  const WORKSPACE_FILE_PAGE_LINES = 5000
+  /**
+   * Sample text for any readable path: a heading plus two lines of copy. The
+   * replayed conversation's `demo` files, and any `huge` path, run past two
+   * default pages so paging can be exercised without a real workspace.
+   */
+  const workspaceFileLines = (path: string): string[] => {
+    const name = path.slice(path.lastIndexOf('/') + 1)
+    const head = [`# ${name}`, '', 'fixture 模式下的示例文本，用于验收侧栏的文本预览。', '真实构建从工作区读取同名文件。']
+    return path.includes('demo') || path.includes('huge')
+      ? [...head, ...Array.from({ length: 12_000 }, (_, index) => `第 ${index + 5} 行：用于验收分页与滚动的长文本样本。`)]
+      : head
+  }
+  const workspaceFileRemotes = {
+    list(path: string): ConnectionRpcResult<{
+      path: string
+      entries: readonly FixtureWorkspaceEntry[]
+      truncated: boolean
+    }> {
+      if (path.length === 0) {
+        return { ok: false, error: { code: 'gateway/bad-request', message: 'path is required', details: {} } }
+      }
+      const relative = workspaceFilePath(path)
+      if (relative === undefined) {
+        return {
+          ok: false,
+          error: { code: 'workspace-file/outside-workspace', message: `${path} is outside the workspace`, details: { path } },
+        }
+      }
+      const entries = workspaceFileTree.get(relative)
+      if (entries === undefined) {
+        const cut = relative.lastIndexOf('/')
+        const name = relative.slice(cut + 1)
+        const sibling = workspaceFileTree.get(cut === -1 ? '' : relative.slice(0, cut))?.find(entry => entry.name === name)
+        if (sibling === undefined) {
+          return { ok: false, error: { code: 'workspace-file/not-found', message: `no entry at ${path}`, details: { path } } }
+        }
+        return {
+          ok: false,
+          error: {
+            code: 'workspace-file/not-directory',
+            message: `${path} is a ${sibling.type}`,
+            details: { path, kind: sibling.type === 'file' ? 'file' : 'other' },
+          },
+        }
+      }
+      return { ok: true, value: { path: relative, entries, truncated: relative === 'src/lib' } }
+    },
+    read(path: string, range: { offset?: number; limit?: number }): ConnectionRpcResult<{
+      absolutePath: string
+      version: string
+      bytes: number
+      offset: number
+      text: string
+      lines: number
+      eof: boolean
+    }> {
+      const located = workspaceFileRemotes.stat(path)
+      if (!located.ok) return located
+      const offset = range.offset ?? 1
+      const limit = range.limit ?? WORKSPACE_FILE_PAGE_LINES
+      if (!Number.isInteger(offset) || offset < 1 || !Number.isInteger(limit) || limit < 1 || limit > WORKSPACE_FILE_PAGE_LINES) {
+        return { ok: false, error: { code: 'gateway/bad-request', message: 'offset and limit must be positive integers within the page cap', details: {} } }
+      }
+      const lines = workspaceFileLines(path)
+      const page = lines.slice(offset - 1, offset - 1 + limit)
+      return {
+        ok: true,
+        value: {
+          ...located.value,
+          offset,
+          text: page.join('\n'),
+          lines: page.length,
+          eof: offset - 1 + limit >= lines.length,
+        },
+      }
+    },
+    stat(path: string): ConnectionRpcResult<{ absolutePath: string; version: string; bytes: number }> {
+      if (path.length === 0) {
+        return { ok: false, error: { code: 'gateway/bad-request', message: 'path is required', details: {} } }
+      }
+      if (path.endsWith('.png') || path.endsWith('.bin')) {
+        return {
+          ok: false,
+          error: { code: 'workspace-file/not-text', message: `${path} is not UTF-8 text`, details: { path } },
+        }
+      }
+      return {
+        ok: true,
+        value: {
+          absolutePath: path.startsWith('/') ? path : `/${path}`,
+          version: 'fx-v1',
+          bytes: new TextEncoder().encode(workspaceFileLines(path).join('\n')).byteLength,
+        },
+      }
+    },
+  }
+
+  /**
+   * Canonical fixture implementation of the generated Directory Picker Remote
+   * contract. The pick is deterministic — the keyless lanes drive the full
+   * pick-then-adopt path without an OS chooser — over the same design-mock
+   * tree the browse primitives serve.
+   */
+  const directoryPickerRemotes = {
+    pick(): ConnectionRpcResult<string | null> {
+      return { ok: true, value: `${FIXTURE_HOME}/Documents/project` }
+    },
+    list(path?: string): ConnectionRpcResult<FixtureDirectoryListing> {
+      const target = path ?? FIXTURE_HOME
+      const children = childrenOf(target)
+      if (children === undefined) {
+        return {
+          ok: false,
+          error: { code: 'directory-picker/unreadable', message: `cannot list ${target}: not in the fixture tree`, details: { path: target } },
+        }
+      }
+      return {
+        ok: true,
+        value: {
+          path: target,
+          home: FIXTURE_HOME,
+          crumbs: crumbsOf(target),
+          entries: [...children].sort((a, b) => a.localeCompare(b))
+            .map(name => ({ name, path: target === '/' ? `/${name}` : `${target}/${name}`, hidden: name.startsWith('.') })),
+          // The fixture tree is tiny; no level ever reaches a backend bound.
+          truncated: false,
+        },
+      }
+    },
+    createDirectory(parent: string, name: string): ConnectionRpcResult<string> {
+      const children = childrenOf(parent)
+      if (children === undefined) {
+        return { ok: false, error: { code: 'directory-picker/create-failed', message: `missing parent ${parent}`, details: { path: parent } } }
+      }
+      // Same root special case as list's entry paths: a plain join under '/'
+      // would mint '//name' and fork the tree's identity.
+      const target = parent === '/' ? `/${name}` : `${parent}/${name}`
+      if (children.includes(name)) {
+        return { ok: false, error: { code: 'directory-picker/exists', message: `${target} already exists`, details: { path: target } } }
+      }
+      directoryTree.set(parent, [...children, name])
+      directoryTree.set(target, [])
+      return { ok: true, value: target }
+    },
+  }
+
+  const goalRemotes = {
+    get(id: SessionId): RpcResult<FxGoalView | undefined> {
+      const missing = requireGoalSession(id)
+      if (missing !== undefined) return missing
+      const current = backscanGoal(logOf(id))
+      return { ok: true, value: current === null ? undefined : goalView(id, current) }
+    },
+    create(id: SessionId, request: { objective: string; maxGoalRounds?: number }): RpcResult<{ ref: FxGoalRef }> {
+      const missing = requireGoalSession(id)
+      if (missing !== undefined) return missing
+      const current = backscanGoal(logOf(id))
+      if (current !== null && current.goal.phase !== 'complete') {
+        return goalFailure(`goal "${current.goal.id}" already exists`)
+      }
+      const now = Date.now()
+      const projection = appendGoalChange(id, {
+        kind: 'goal/change', version: 1, operation: 'create',
+        goal: {
+          id: `fx-goal-${logOf(id).length}`,
+          revision: 1,
+          objective: request.objective,
+          phase: 'active',
+          maxGoalRounds: request.maxGoalRounds ?? 256,
+        },
+        roundsStarted: 0, createdAt: now, updatedAt: now,
+      })
+      setGoalActivation(id, 'armed')
+      return { ok: true, value: { ref: { id: projection.goal.id, revision: projection.goal.revision } } }
+    },
+    edit(id: SessionId, ref: FxGoalRef, request: { objective?: string; maxGoalRounds?: number }): RpcResult<FxGoalView> {
+      return mutateGoal(id, ref, current => ({
+        ...current.goal,
+        revision: current.goal.revision + 1,
+        ...request.objective === undefined ? {} : { objective: request.objective },
+        ...request.maxGoalRounds === undefined ? {} : { maxGoalRounds: request.maxGoalRounds },
+      }))
+    },
+    pause(id: SessionId, ref: FxGoalRef): RpcResult<FxGoalView> {
+      return mutateGoal(id, ref, current => (
+        current.goal.phase === 'active'
+          ? { ...current.goal, revision: current.goal.revision + 1, phase: 'paused' }
+          : undefined
+      ))
+    },
+    resume(id: SessionId, ref: FxGoalRef): RpcResult<FxGoalView> {
+      return mutateGoal(id, ref, current => (
+        current.goal.phase === 'paused' || current.goal.phase === 'blocked' || current.goal.phase === 'active'
+          ? { ...current.goal, revision: current.goal.revision + 1, phase: 'active' }
+          : undefined
+      ))
+    },
+    complete(id: SessionId, ref: FxGoalRef): RpcResult<FxGoalView> {
+      return mutateGoal(id, ref, current => (
+        current.goal.phase === 'complete'
+          ? undefined
+          : { ...current.goal, revision: current.goal.revision + 1, phase: 'complete' }
+      ))
+    },
+    clear(id: SessionId, ref: FxGoalRef): RpcResult<FxGoalRef> {
+      const resolved = resolveGoal(id, ref)
+      if (!resolved.ok) return resolved
+      const current = resolved.value
+      const tombstone = { id: current.goal.id, revision: current.goal.revision + 1 }
+      appendGoalChange(id, {
+        kind: 'goal/change', version: 1, operation: 'clear', cleared: tombstone, clearedAt: Date.now(),
+      })
+      setGoalActivation(id, 'disarmed')
+      return { ok: true, value: tombstone }
+    },
+  }
+
+  /** Resolve one current goal revision for a canonical Remote mutation. */
+  function resolveGoal(id: SessionId, ref: FxGoalRef): RpcResult<FxGoalProjection> {
+    const missing = requireGoalSession(id)
+    if (missing !== undefined) return missing
+    const current = backscanGoal(logOf(id))
+    if (current === null || current.goal.id !== ref.id || current.goal.revision !== ref.revision) {
+      return goalFailure('stale or missing goal revision')
+    }
+    return { ok: true, value: current }
+  }
+
+  /** Shared CAS mutation path behind the canonical Remote verbs. */
+  function mutateGoal(
+    id: SessionId,
+    ref: FxGoalRef,
+    next: (current: FxGoalProjection) => FxGoalProjection['goal'] | undefined,
+  ): RpcResult<FxGoalView> {
+    const resolved = resolveGoal(id, ref)
+    if (!resolved.ok) return resolved
+    const current = resolved.value
+    const goal = next(current)
+    if (goal === undefined) {
+      return goalFailure(`invalid goal transition from "${current.goal.phase}"`)
+    }
+    const currentActivation = goalActivations.get(id)
+      ?? (current.goal.phase === 'active' ? 'armed' : 'disarmed')
+    const activation = goal.phase === 'active'
+      ? current.goal.phase === 'active' ? currentActivation : 'armed'
+      : 'disarmed'
+    const projection = appendGoalChange(id, {
+      kind: 'goal/change', version: 1,
+      operation: goal.phase === current.goal.phase ? 'edit' : goal.phase === 'paused' ? 'pause' : goal.phase === 'active' ? 'resume' : 'complete',
+      goal, roundsStarted: current.roundsStarted, createdAt: current.createdAt, updatedAt: Date.now(),
+    })
+    setGoalActivation(id, activation)
+    return { ok: true, value: goalView(id, projection) }
+  }
+
+  /** Canonical fixture implementation of the generated AgentPresets Remote contract. */
+  const presetRemotes = {
+    // Both trusts appear, because a surface must present a locally authored
+    // preset differently from one the deployment vetted.
+    list(): RpcResult<{
+      presets: { id: string; trust: 'system' | 'user'; isDefault: boolean }[]
+      authorable: boolean
+      modeSelectionEnabled: boolean
+    }> {
+      return {
+        ok: true,
+        value: {
+          presets: [...fixturePresets].map(([id, preset]) => ({
+            id,
+            trust: preset.trust,
+            isDefault: id === fixtureDefaultPreset,
+          })),
+          authorable: true,
+          modeSelectionEnabled: true,
+        },
+      }
+    },
+    select(_id: SessionId, agentPreset: string): RpcResult<string> {
+      fixtureDefaultPreset = agentPreset
+      return { ok: true, value: agentPreset }
+    },
+    read(agentPreset: string): RpcResult<{ agentPreset: string; trust: 'system' | 'user'; content: string }> {
+      const preset = fixturePresets.get(agentPreset)
+      if (preset === undefined) {
+        return {
+          ok: false,
+          error: {
+            code: 'agent-preset/not-found',
+            message: `unknown agent preset "${agentPreset}"`,
+            details: { agentPreset, available: [...fixturePresets.keys()] },
+          },
+        }
+      }
+      return { ok: true, value: { agentPreset, trust: preset.trust, content: preset.content } }
+    },
+    copy(from: string, id: string): RpcResult<void> {
+      const source = fixturePresets.get(from)
+      if (source === undefined) {
+        return {
+          ok: false,
+          error: {
+            code: 'agent-preset/not-found',
+            message: `unknown agent preset "${from}"`,
+            details: { agentPreset: from, available: [...fixturePresets.keys()] },
+          },
+        }
+      }
+      if (fixturePresets.has(id)) {
+        return {
+          ok: false,
+          error: {
+            code: 'agent-preset/invalid',
+            message: `agent preset "${id}" already exists`,
+            details: { agentPreset: id, reason: 'already exists' },
+          },
+        }
+      }
+      fixturePresets.set(id, { trust: 'user', content: source.content })
+      return { ok: true, value: undefined }
+    },
+    deletePreset(id: string): RpcResult<void> {
+      if (fixturePresets.get(id)?.trust === 'system') {
+        return {
+          ok: false,
+          error: {
+            code: 'agent-preset/read-only',
+            message: `agent preset "${id}" ships with the deployment`,
+            details: { agentPreset: id, reason: 'it ships with the deployment' },
+          },
+        }
+      }
+      fixturePresets.delete(id)
+      return { ok: true, value: undefined }
+    },
+  }
+
+  /** At most one in-flight replay per session; cancel clears it. */
+  const replays = new Map<SessionId, { timer: ReturnType<typeof setTimeout> | undefined; finish(aborted: boolean): void }>()
+  const heldReplies = new Map<SessionId, () => void>()
+
+  /** History transit delay; the page snapshot is taken at request time. */
+  let historyDelayMs = 0
+  /** One-shot history failure (timing hook: a pre-disconnect history request already doomed when reconnect lands). */
+  let failNextHistory = false
+  /** Force-enders for currently open stream generators (timing hook: simulated connection loss). */
+  const streamBreakers = new Set<() => void>()
+  /** Retry scenarios opened by timing hooks and completed in a later browser assertion phase. */
+  const retryScenarios = new Map<SessionId, { turn: number; stepStarted: boolean }>()
+  /** The single opt-in browser stress producer; normal fixture journeys never start it. */
+  let activeReasoningChunkStorm: ReasoningChunkStormState | null = null
+
+  // Browser-only timing hooks for slow history, lost frames, and reconnects.
+  const timingHooks = {
+    setHistoryDelay(ms: number): void {
+      historyDelayMs = ms
+    },
+    /** Fail the NEXT history call (after its transit delay) with a transport-level throw. */
+    failNextHistory(): void {
+      failNextHistory = true
+    },
+    /** Log append plus follow-stream delivery (the normal live path). */
+    appendUser(id: string, msg: string): void {
+      append(sid(id), { type: 'user/message', surfaceOp: 'append', data: userMessage(text(msg)) })
+    },
+    /** Append a later durable title revision through the normal raw-event + control-frame path. */
+    appendTitle(id: string, title: string): void {
+      const log = logOf(sid(id))
+      const messageSeqs = log.filter(event => event.type === 'user/message').map(event => event.seq)
+      append(sid(id), { type: 'session/title', data: { title, messageSeqs, source: { kind: 'provider', provider: brandString<SessionTitleProviderId>('fixture') } } })
+    },
+    /** Disarm the single active goal without a durable phase change. */
+    disarmOnlyGoal(): void {
+      const active = [...logs.entries()].filter(([, log]) => {
+        const current = backscanGoal(log)
+        return current?.goal.phase === 'active'
+      })
+      if (active.length !== 1) {
+        throw new Error(`fixture: expected one active goal, found ${String(active.length)}`)
+      }
+      const [session] = active
+      if (session === undefined) return
+      setGoalActivation(session[0], 'disarmed')
+    },
+    /** Start an externally paced reasoning stream for the opt-in browser stress lane. */
+    startReasoningChunkStorm(
+      id: string,
+      chunkCount: number,
+      chunksPerInterval: number,
+      intervalMs: number,
+    ): string {
+      if (!Number.isSafeInteger(chunkCount) || chunkCount < 1) {
+        throw new Error('fixture: reasoning chunk count must be a positive safe integer')
+      }
+      if (!Number.isSafeInteger(chunksPerInterval) || chunksPerInterval < 1) {
+        throw new Error('fixture: reasoning chunks per interval must be a positive safe integer')
+      }
+      if (!Number.isSafeInteger(intervalMs) || intervalMs < 1) {
+        throw new Error('fixture: reasoning interval must be a positive safe integer')
+      }
+      if (activeReasoningChunkStorm?.emitting === true) {
+        throw new Error('fixture: reasoning chunk storm already running')
+      }
+
+      const sessionId = sid(id)
+      const log = logOf(sessionId)
+      let turn = nextTurn.get(sessionId) ?? 0
+      for (const event of log) {
+        const candidate: unknown = 'turn' in event.data ? event.data.turn : undefined
+        if (typeof candidate === 'number') turn = Math.max(turn, candidate + 1)
+      }
+      nextTurn.set(sessionId, turn + 1)
+      const marker = `REASONING_STRESS_COMPLETE:${String(turn)}:${String(chunkCount)}`
+      const state: ReasoningChunkStormState = {
+        sessionId: id,
+        chunkCount,
+        chunksPerInterval,
+        intervalMs,
+        emitted: 0,
+        marker,
+        emitting: true,
+      }
+      activeReasoningChunkStorm = state
+
+      setRunning(sessionId, true)
+      append(sessionId, { type: 'turn/start', data: { turn } })
+      append(sessionId, {
+        type: 'user/message', surfaceOp: 'append',
+        data: userMessage(text(`Reasoning chunk stress: ${String(chunkCount)} chunks.`)),
+      })
+      append(sessionId, { type: 'step/start', data: { turn, step: 0 } })
+      beginAssistant(sessionId, turn, 0)
+      pushAssistant(sessionId, { type: 'block-start', index: 0, blockType: 'reasoning' })
+
+      const startedAt = Date.now()
+      const pump = (): void => {
+        const elapsedIntervals = Math.floor((Date.now() - startedAt) / intervalMs) + 1
+        const due = Math.max(state.emitted + chunksPerInterval, elapsedIntervals * chunksPerInterval)
+        const end = Math.min(due, chunkCount)
+        for (let index = state.emitted; index < end; index++) {
+          const chunkText = index === chunkCount - 1
+            ? `\n${marker}`
+            : index % 64 === 63 ? '推理\n' : '推理'
+          pushAssistant(sessionId, { type: 'reasoning-delta', index: 0, text: chunkText })
+        }
+        state.emitted = end
+        if (end < chunkCount) {
+          setTimeout(pump, intervalMs)
+        } else {
+          state.emitting = false
+        }
+      }
+      setTimeout(pump, 0)
+      return marker
+    },
+    /** Return a copy so browser probes cannot mutate the active producer. */
+    reasoningChunkStormState(): ReasoningChunkStormState | null {
+      return activeReasoningChunkStorm === null ? null : { ...activeReasoningChunkStorm }
+    },
+    /** Open one failed model step whose partial remains visible until llm/retry arrives. */
+    beginModelRetry(id: string): void {
+      const sessionId = sid(id)
+      const turn = nextTurn.get(sessionId) ?? 0
+      nextTurn.set(sessionId, turn + 1)
+      retryScenarios.set(sessionId, { turn, stepStarted: true })
+      setRunning(sessionId, true)
+      append(sessionId, { type: 'turn/start', data: { turn } })
+      append(sessionId, { type: 'user/message', surfaceOp: 'append', data: userMessage(text('请重试这个请求')) })
+      append(sessionId, { type: 'step/start', data: { turn, step: 1 } })
+      beginAssistant(sessionId, turn, 1)
+      pushAssistant(sessionId, { type: 'block-start', index: 0, blockType: 'text' })
+      pushAssistant(sessionId, { type: 'text-delta', index: 0, text: '应撤回的半截回复' })
+    },
+    /** Record one retry decision; the next attempt remains in the same step. */
+    scheduleModelRetry(id: string, retry = 1, delayMs = 450): void {
+      const sessionId = sid(id)
+      const scenario = retryScenarios.get(sessionId)
+      if (scenario === undefined) throw new Error(`fixture: no model retry scenario for ${id}`)
+      if (!scenario.stepStarted) {
+        beginAssistant(sessionId, scenario.turn, 1)
+        pushAssistant(sessionId, { type: 'block-start', index: 0, blockType: 'text' })
+        pushAssistant(sessionId, { type: 'text-delta', index: 0, text: `第 ${String(retry)} 次应撤回的回复` })
+        scenario.stepStarted = true
+      }
+      const failure = { code: 'TRANSPORT', message: '连接被重置' }
+      pushAssistant(sessionId, { type: 'finish', reason: { kind: 'error', failure } })
+      const attempt = activeAttempts.get(sessionId) as FixtureAttemptState
+      const attemptEvent = append(sessionId, {
+        type: 'assistant/attempt', data: { turn: scenario.turn, step: 1, stream: [...attempt.stream.snapshot()] },
+      })
+      commitAssistant(sessionId, attemptEvent)
+      append(sessionId, {
+        type: 'llm/retry',
+        data: {
+          retryId: brandString<RetryId>(`fx-retry-${String(scenario.turn)}-${String(retry)}`),
+          turn: scenario.turn, step: 1,
+          provider: 'fixture', mode: 'normal', policyKey: 'fixture-normal',
+          retry, maxRetries: 2, delayMs, failure,
+        },
+      })
+      scenario.stepStarted = false
+    },
+    /** Record one retry decision, then cancel its source turn before the retry starts. */
+    cancelModelRetryDuringBackoff(id: string, delayMs = 450): void {
+      const sessionId = sid(id)
+      const scenario = retryScenarios.get(sessionId)
+      if (scenario === undefined) throw new Error(`fixture: no model retry scenario for ${id}`)
+      const failure = { code: 'TRANSPORT', message: '连接被重置' }
+      const active = activeAttempts.get(sessionId)
+      if (active !== undefined) {
+        pushAssistant(sessionId, { type: 'finish', reason: { kind: 'error', failure } })
+        const attemptEvent = append(sessionId, {
+          type: 'assistant/attempt', data: { turn: scenario.turn, step: 1, stream: [...active.stream.snapshot()] },
+        })
+        commitAssistant(sessionId, attemptEvent)
+      }
+      append(sessionId, {
+        type: 'llm/retry',
+        data: {
+          retryId: brandString<RetryId>(`fx-retry-${String(scenario.turn)}-1`),
+          turn: scenario.turn, step: 1,
+          provider: 'fixture', mode: 'normal', policyKey: 'fixture-normal',
+          retry: 1, maxRetries: 2, delayMs, failure,
+        },
+      })
+      append(sessionId, { type: 'step/end', data: { turn: scenario.turn, step: 1 } })
+      append(sessionId, { type: 'turn/end', data: { turn: scenario.turn, reason: { kind: 'aborted', reason: { kind: 'user' } },
+      } })
+      retryScenarios.delete(sessionId)
+      setRunning(sessionId, false)
+    },
+    /** Finish the timing-hook retry with a finalized response in the open step. */
+    completeModelRetry(id: string): void {
+      const sessionId = sid(id)
+      const scenario = retryScenarios.get(sessionId)
+      if (scenario === undefined) throw new Error(`fixture: no model retry scenario for ${id}`)
+      retryScenarios.delete(sessionId)
+      const completed = '重试后的完整回复'
+      beginAssistant(sessionId, scenario.turn, 1)
+      pushAssistant(sessionId, { type: 'block-start', index: 0, blockType: 'text' })
+      pushAssistant(sessionId, { type: 'text-delta', index: 0, text: completed })
+      pushAssistant(sessionId, { type: 'block-end', index: 0, block: { type: 'text', text: completed } })
+      pushAssistant(sessionId, { type: 'finish', reason: { kind: 'stop' } })
+      const attempt = activeAttempts.get(sessionId) as FixtureAttemptState
+      const message = append(sessionId, {
+        type: 'assistant/message',
+        surfaceOp: 'append',
+        data: {
+          turn: scenario.turn,
+          step: 1,
+          message: assistantMessage(text(completed)),
+          stream: [...attempt.stream.snapshot()],
+        },
+      })
+      commitAssistant(sessionId, message)
+      append(sessionId, { type: 'step/end', data: { turn: scenario.turn, step: 1 } })
+      append(sessionId, { type: 'turn/end', data: { turn: scenario.turn, reason: { kind: 'completed' } } })
+      setRunning(sessionId, false)
+    },
+    /** Log append without follow delivery: a frame lost in transit that page repair must recover. */
+    appendSilent(id: string, msg: string): void {
+      const log = logOf(sid(id))
+      log.push(withEnvelope(
+        { type: 'user/message', surfaceOp: 'append', time: Date.now(), data: userMessage(text(msg)) },
+        SessionSeq(log.length),
+      ))
+    },
+    /** End every open stream generator (client sees both streams close -> reconnect + resync path). */
+    breakStreams(): void {
+      for (const breakNow of [...streamBreakers]) breakNow()
+    },
+  }
+  const timingDescriptor = Object.getOwnPropertyDescriptor(globalThis, '__fxTiming')
+  Object.defineProperty(globalThis, '__fxTiming', { configurable: true, writable: true, value: timingHooks })
+
+  /** Prompt replay: chunk typewriter (80ms/frame) -> assistant/message finalize -> turn/end + running flip. */
+  const startReply = (id: SessionId, turn: number, replyText: string): void => {
+    const step = 0
+    append(id, { type: 'step/start', data: { turn, step } })
+    beginAssistant(id, turn, step)
+    pushAssistant(id, { type: 'block-start', index: 0, blockType: 'text' })
+    /* v8 ignore next -- the ?? arm needs a null match, but every fixture reply is non-empty. */
+    const pieces = replyText.match(/[\s\S]{1,6}/gu) ?? [replyText]
+    let i = 0
+    const finish = (aborted: boolean): void => {
+      replays.delete(id)
+      heldReplies.delete(id)
+      const done = pieces.slice(0, i).join('')
+      pushAssistant(id, { type: 'block-end', index: 0, block: { type: 'text', text: done } })
+      pushAssistant(id, { type: 'usage', usage: fixtureUsage(turn, step) })
+      if (!aborted) pushAssistant(id, { type: 'finish', reason: { kind: 'stop' } })
+      const attempt = activeAttempts.get(id) as FixtureAttemptState
+      const message = append(id, {
+        type: 'assistant/message',
+        surfaceOp: 'append',
+        data: {
+          turn,
+          step,
+          message: assistantMessage(text(done)),
+          stream: [...attempt.stream.snapshot()],
+          usage: fixtureUsage(turn, step),
+          ...(aborted ? { interrupted: true } : {}),
+        },
+      })
+      commitAssistant(id, message)
+      append(id, { type: 'step/end', data: { turn, step } })
+      append(id, { type: 'turn/end', data: {
+        turn,
+        reason: aborted ? { kind: 'aborted', reason: { kind: 'user' } } : { kind: 'completed' },
+      } })
+      setRunning(id, false)
+    }
+    if (options.controlledReply === true) {
+      heldReplies.set(id, () => {
+        i = pieces.length
+        pushAssistant(id, { type: 'text-delta', index: 0, text: replyText })
+        finish(false)
+      })
+      replays.set(id, { timer: undefined, finish })
+      return
+    }
+    const tick = (): void => {
+      const piece = pieces[i]
+      if (piece === undefined) {
+        finish(false)
+        return
+      }
+      i++
+      pushAssistant(id, { type: 'text-delta', index: 0, text: piece })
+      replays.set(id, { timer: setTimeout(tick, 80), finish })
+    }
+    replays.set(id, { timer: setTimeout(tick, 80), finish })
+  }
+
+  const sessionApi: FixtureSessionApi = {
+    list: _request => sessionOk({
+      items: [...sessions].sort((a, b) => b.updatedAt - a.updatedAt).map(viewerRow),
+    }),
+    search: (request, signal) => {
+      if (signal.aborted) {
+        return sessionErr({
+          code: 'gateway/cancelled',
+          message: 'fixture session search was aborted',
+          details: {},
+        })
+      }
+      const query = searchTokenSpans(request.query).tokens.map(token => token.value)
+      const matches = sessions.flatMap((summary) => {
+        const log = logs.get(summary.sessionId) ?? []
+        const current = new Set(foldSurface(log).nodes)
+        const best = log.flatMap((event): FixtureSearchCandidate[] => {
+          if (!current.has(event.seq)) return []
+          const eventText = searchEventText(event)
+          const document = searchTokenSpans(eventText)
+          const match = phraseMatch(document.tokens, query)
+          if (match.count === 0) return []
+          return [{
+            sessionId: summary.sessionId,
+            seq: event.seq,
+            time: event.time,
+            text: document.text,
+            matchCount: match.count,
+            matchStart: match.start,
+            matchEnd: match.end,
+            documentLength: Array.from(eventText).length,
+          }]
+        }).sort(compareSearchCandidates)[0]
+        return best === undefined ? [] : [best]
+      }).sort(compareSearchCandidates)
+      return sessionOk({
+        items: matches.slice(0, FIXTURE_SESSION_SEARCH_RESULT_LIMIT).map(match => ({
+          sessionId: match.sessionId,
+          snippet: searchSnippet(match.text, match.matchStart, match.matchEnd),
+        })),
+        hasMore: matches.length > FIXTURE_SESSION_SEARCH_RESULT_LIMIT,
+      })
+    },
+    create: async (request) => {
+      const workspace = request.workspaceId === undefined
+        ? undefined
+        : workspaces.find(w => w.workspaceId === request.workspaceId)
+      if (request.workspaceId !== undefined && workspace === undefined) {
+        return sessionErr({
+          code: 'workspace/not-found',
+          message: `no workspace ${request.workspaceId}`,
+          details: { workspaceId: request.workspaceId },
+        })
+      }
+      const cwd = workspace?.path ?? request.cwd ?? '/tmp/fixture'
+      const requestedId = request.sessionId
+      const attachWorkspace = (sessionId: SessionId): void => {
+        /* v8 ignore next -- callers enter only when a target Workspace exists. */
+        if (workspace === undefined || workspace.sessionIds.includes(sessionId)) return
+        workspace.sessionIds = [sessionId, ...workspace.sessionIds]
+        workspace.updatedAt = new Date().toISOString()
+        emitWorkspace({ type: 'upsert', workspace: workspaceSnapshot(workspace) })
+      }
+      const attachFailure = (
+        sessionId: SessionId,
+        workspaceId: WorkspaceId,
+      ): Promise<ConnectionRpcResult<{ sessionId: SessionId }>> => sessionErr({
+        code: 'session/workspace-attach-failed' as const,
+        message: `fixture rejected Workspace attachment for ${sessionId}`,
+        details: { sessionId, workspaceId },
+      })
+      if (requestedId !== undefined) {
+        const existing = summaryOf(requestedId)
+        if (existing !== undefined) {
+          if (existing.cwd !== cwd) {
+            return sessionErr({
+              code: 'session/conflict',
+              message: `session ${requestedId} already uses ${existing.cwd ?? 'no cwd'}`,
+              details: { sessionId: requestedId, requestedCwd: cwd, ...existing.cwd === undefined ? {} : { existingCwd: existing.cwd } },
+            })
+          }
+          if (workspace !== undefined && !workspace.sessionIds.includes(requestedId)) {
+            if (options.failWorkspaceAttach) return attachFailure(requestedId, workspace.workspaceId)
+            attachWorkspace(requestedId)
+          }
+          return sessionOk({ sessionId: requestedId })
+        }
+      }
+      const created: FixtureSessionSummary = {
+        sessionId: requestedId ?? sid(`fx-${nextSession++}`), updatedAt: Date.now(), running: false, blank: true, cwd,
+      }
+      sessions.push(created)
+      modelSelections.set(created.sessionId, { provider: 'deepseek-official', model: 'deepseek-v4-flash' })
+      const emitSession = (): void => {
+        emitRemote('api-session/added', [created])
+      }
+      if (workspace !== undefined && options.failWorkspaceAttach) {
+        emitSession()
+        return attachFailure(created.sessionId, workspace.workspaceId)
+      }
+      if (workspace !== undefined && options.createFrameOrder === 'workspace-first') {
+        attachWorkspace(created.sessionId)
+        emitSession()
+      } else {
+        emitSession()
+        if (workspace !== undefined) attachWorkspace(created.sessionId)
+      }
+      if (options.dropSessionCreateResponse) throw new Error('fixture: dropped session.create response after publication')
+      return sessionOk({ sessionId: created.sessionId })
+    },
+    rename: (request) => {
+      const missing = requireRemoteSession(request)
+      if (missing !== undefined) return missing
+      const { sessionId, title } = request
+      const normalized = title.trim().replace(/\s+/g, ' ')
+      if (normalized.length === 0) {
+        return sessionErr({
+          code: 'session/title-invalid',
+          message: 'session title must contain visible characters',
+          details: { sessionId },
+        })
+      }
+      // The append emits the durable event and its control projection frame;
+      // the unary response settles the caller first.
+      append(sessionId, {
+        type: 'session/title',
+        data: { title: normalized, messageSeqs: [], source: { kind: 'user' } },
+      })
+      const appended = logOf(sessionId).at(-1) as SessionEvent
+      return sessionOk({ title: normalized, seq: appended.seq })
+    },
+    fork: (request) => {
+      const { sessionId, atSeq } = request
+      const source = summaryOf(sessionId)
+      if (source === undefined) {
+        return sessionErr({
+          code: 'session/not-found',
+          message: `no session ${sessionId}`,
+          details: { sessionId },
+        })
+      }
+      const log = logs.get(sessionId) ?? []
+      if (options.forkRefusal !== undefined) {
+        return sessionErr({
+          code: options.forkRefusal,
+          message: `fixture: ${options.forkRefusal}`,
+          details: { sessionId },
+        })
+      }
+      const lastSeq = log.at(-1)?.seq ?? -1
+      const anchoredBoundary = atSeq === undefined
+        ? undefined
+        : log.find(e => e.type === 'turn/end' && e.seq >= atSeq)
+      const boundary = anchoredBoundary
+          ?? (atSeq === undefined || atSeq > lastSeq
+            ? log.findLast(e => e.type === 'turn/end')
+            : undefined)
+      if (boundary === undefined) {
+        return sessionErr({
+          code: 'session/fork-unavailable',
+          message: atSeq !== undefined && atSeq <= lastSeq
+            ? `session ${sessionId} has not completed the turn containing event ${String(atSeq)}`
+            : `session ${sessionId} has no completed turn`,
+          details: { sessionId },
+        })
+      }
+      const cut = boundary.seq + 1
+      const child: FixtureSessionSummary = {
+        sessionId: sid(`fx-${nextSession++}`), updatedAt: Date.now(),
+        running: options.forkRunning === true, blank: false,
+        parentSessionId: sessionId,
+        ...source.cwd === undefined ? {} : { cwd: source.cwd },
+        // The branch facts a viewer's own fork carries, published through the projection channel the
+        // owner host uses rather than as fields on the shared Session summary.
+        ...(options.viewerFork !== true
+          ? {}
+          : {
+            forkLineage: {
+              origin: 'fork' as const,
+              sourceSessionId: sessionId,
+              authoredByViewer: true,
+              workspaceReadOnly: true,
+            },
+          }),
+      }
+      logs.set(child.sessionId, log.slice(0, cut))
+      nextTurn.set(child.sessionId, boundary.type === 'turn/end' ? boundary.data.turn + 1 : 0)
+      sessions.push(child)
+      if (options.viewerFork === true && options.viewerSourceGrant !== undefined) {
+        childGrants.set(child.sessionId, { sessionMode: 'write' })
+      }
+      refreshGrants()
+      emitRemote('api-session/added', [viewerRow(child)])
+      const workspace = workspaces.find(w => w.sessionIds.includes(sessionId))
+      if (workspace !== undefined) {
+        workspace.sessionIds = [child.sessionId, ...workspace.sessionIds]
+        workspace.updatedAt = new Date().toISOString()
+        emitWorkspace({ type: 'upsert', workspace: workspaceSnapshot(workspace) })
+      }
+      return sessionOk({ sessionId: child.sessionId })
+    },
+    history: async (request) => {
+      const log = logs.get(request.sessionId) ?? []
+      const throughSeq = request.throughSeq ?? log.length - 1
+      const boundedLog = log.slice(0, throughSeq + 1)
+      // Snapshot at request time, then deliver after the transit delay.
+      const page = pageOf(boundedLog, request.beforeSeq, request.maxMessages ?? 50, request.turnWindow)
+      const doomed = failNextHistory
+      failNextHistory = false
+      const delay = historyDelayMs
+      if (delay > 0) await new Promise(resolve => setTimeout(resolve, delay))
+      if (doomed) throw new Error('fixture: simulated history transport failure')
+      return sessionOk(page)
+    },
+    selectModel: (request) => {
+      const selected: ModelSelection = {
+        provider: request.provider,
+        model: request.model,
+        ...request.reasoningEffort === undefined
+          ? {}
+          : { reasoningEffort: request.reasoningEffort as ReasoningEffortId },
+      }
+      append(request.sessionId, { type: 'model/selection', data: selected })
+      modelSelections.set(request.sessionId, selected)
+      return sessionOk({ selected })
+    },
+    prompt: (request) => {
+      prompts.push(request)
+      const { sessionId: id, mode, content } = request
+      const summary = summaryOf(id)
+      if (summary === undefined) {
+        return sessionErr({ code: 'session/not-found', message: `no session ${id}`, details: { sessionId: id } })
+      }
+      if (options.rejectPrompt) {
+        if (content.some(block => block.type === 'image')) {
+          return sessionErr({
+            code: 'session/attachment-invalid',
+            message: 'fixture: image side exceeds the deployment limit',
+            details: { reason: 'IMAGE_DIMENSION_TOO_LARGE' },
+          })
+        }
+        return sessionErr({
+          // A named code is the one the page is asked to state in its own words; without it the
+          // fixture keeps the transport's own busy refusal.
+          code: options.rejectPromptCode ?? 'session/agent-busy',
+          message: options.rejectPromptCode === undefined
+            ? 'fixture: prompt rejected before acceptance'
+            // A refusal composed the way a Host composes one from whatever its service raised: the
+            // fixture's own text stands in for a credential, a path, and an address, so a page that
+            // states the code it knows is exercised against a message it must not spread.
+            : `preparing this fork failed: ${FIXTURE_REFUSAL_DETAIL}`,
+          details: { reason: 'fixture-prompt-rejection' },
+        })
+      }
+      summary.updatedAt = Date.now()
+      // First accepted prompt appends events: the summary stops being blank.
+      summary.blank = false
+      const userText = content.map(b => (b.type === 'text' ? b.text : '')).join('')
+      const durable: ContentBlock[] = content.map((block) => {
+        if (block.type === 'text') return block
+        const attachment: ImageAttachmentRef = {
+          attachmentId: `fixture:${randomUuid()}` as AttachmentIdType,
+          mediaType: block.mediaType,
+          bytes: Math.max(
+            1,
+            Math.floor(block.data.length * 3 / 4)
+              - (block.data.endsWith('==') ? 2 : block.data.endsWith('=') ? 1 : 0),
+          ),
+          width: 160,
+          height: 90,
+          ...block.name === undefined ? {} : { name: block.name },
+        }
+        attachments.set(String(attachment.attachmentId), { attachment, data: block.data })
+        return { type: 'image', attachment }
+      })
+      // The host echoes the prompt's requestId as the user source's rpcId;
+      // the Session object retires its local submission echo on it. The
+      // user-rpc source member is declared by dsh-api-session-controller,
+      // which this standalone fixture does not import — hence the assertion.
+      const promptSource = { kind: 'user', rpcId: request.requestId } as MessageSource
+      if (mode === 'steer' && replays.has(id)) {
+        // Steering: the durable user/message lands inside the current turn; the replay continues.
+        append(id, { type: 'user/message', surfaceOp: 'append', data: userMessage(durable, promptSource) })
+        return sessionOk({ accepted: true as const })
+      }
+      const turn = nextTurn.get(id) ?? 0
+      nextTurn.set(id, turn + 1)
+      setRunning(id, true)
+      append(id, { type: 'turn/start', data: { turn } })
+      // Boundary flush parallel (the host's step/start observer): an outstanding
+      // /plan selection commits as plan/mode inside the opened turn.
+      const plan = foldPlan(logOf(id))
+      if (plan.wanted !== null && plan.wanted !== plan.active) {
+        append(id, { type: 'plan/mode', data: { active: plan.wanted } })
+      }
+      append(id, { type: 'user/message', surfaceOp: 'append', data: userMessage(durable, promptSource) })
+      // Capacity parallel of the host token-meter's request/context record:
+      // log-only, appended inside the open turn, and deduplicated against the
+      // route already recorded (the fixture never varies contextWindow).
+      const selection = modelSelections.get(id) ?? { provider: 'deepseek', model: 'deepseek-v4-flash' }
+      const previousHeader = logOf(id).findLast(event => event.type === 'request/header')
+      const previousSelection = previousHeader?.type === 'request/header'
+        ? {
+          provider: previousHeader.data.header.config.provider,
+          model: previousHeader.data.header.config.model,
+          ...(previousHeader.data.header.config.reasoningEffort === undefined
+            ? {}
+            : { reasoningEffort: previousHeader.data.header.config.reasoningEffort }),
+        }
+        : null
+      if (!sameModelSelection(previousSelection, selection)) {
+        append(id, {
+          type: 'request/header',
+          data: {
+            header: {
+              config: {
+                provider: selection.provider,
+                model: selection.model,
+                ...selection.reasoningEffort === undefined
+                  ? {}
+                  : { reasoningEffort: brandString<ReasoningEffortId>(selection.reasoningEffort) },
+              },
+            },
+            reason: previousHeader === undefined ? 'initial' : 'change',
+          },
+        })
+      }
+      if (lastRequestContext(logOf(id))?.model !== selection.model) {
+        append(id, {
+          type: 'request/context',
+          data: { provider: selection.provider, model: selection.model, contextWindow: 128_000 },
+        })
+      }
+      startReply(
+        id,
+        turn,
+        userText === 'render markdown'
+          ? MARKDOWN_FIXTURE
+          : userText === 'report model'
+            ? (() => {
+              const selection = modelSelections.get(id)
+              return `当前模型：${selection?.provider ?? 'unknown'}/${selection?.model ?? 'unknown'}`
+                  + (selection?.reasoningEffort === undefined ? '' : ` · 推理等级：${selection.reasoningEffort}`)
+            })()
+            : `回声：${userText}。这是 fixture 的流式回复，用于验证打字机增长与定稿切换。`,
+      )
+      return sessionOk({ accepted: true as const })
+    },
+    attachment: (request) => {
+      // The client sends the complete reference it folded from the log; the fixture reads by id and
+      // answers with the stored reference, the way the Gateway verifies storage and returns it.
+      const attachmentId = String(request.attachment.attachmentId)
+      const stored = attachments.get(attachmentId)
+      if (stored === undefined) {
+        return sessionErr({
+          code: 'session/attachment-invalid',
+          message: 'fixture attachment missing',
+          details: { reason: 'ATTACHMENT_NOT_FOUND' },
+        })
+      }
+      if (!logReferencesAttachment(
+        logs.get(request.sessionId) ?? [],
+        attachmentId,
+      )) {
+        return sessionErr({
+          code: 'session/attachment-invalid',
+          message: 'fixture attachment is not referenced by this session',
+          details: { reason: 'ATTACHMENT_NOT_REFERENCED' },
+        })
+      }
+      return sessionOk(stored)
+    },
+    updateQueue: request => sessionErr({
+      code: 'session/queue-item-not-found',
+      message: 'fixture has no pending queue item',
+      details: { itemId: request.itemId },
+    }),
+    cancel: (request) => {
+      cancellations.push(request.sessionId)
+      if (options.cancelRefusal !== undefined) {
+        return sessionErr({
+          code: options.cancelRefusal,
+          message: `cancelling this Session failed: ${FIXTURE_REFUSAL_DETAIL}`,
+          details: {},
+        })
+      }
+      const replay = replays.get(request.sessionId)
+      if (replay !== undefined) {
+        clearTimeout(replay.timer)
+        replay.finish(true)
+      } else {
+        setRunning(request.sessionId, false)
+      }
+      return sessionOk({ accepted: true as const })
+    },
+  }
+
+  const controlBaseline = (): Extract<FixtureControlFrame, { type: 'baseline' }> => {
+    const queues: Record<string, readonly never[]> = {}
+    const jobs: Record<string, readonly never[]> = {}
+    const projections: Record<string, FixtureProjectionsBlock> = {}
+    for (const summary of sessions) {
+      queues[summary.sessionId] = []
+      jobs[summary.sessionId] = []
+      const log = logs.get(summary.sessionId) ?? []
+      projections[summary.sessionId] = {
+        asOfSeq: log.length - 1,
+        values: viewerProjectionValues(summary),
+      }
+    }
+    return {
+      type: 'baseline',
+      value: {
+        queues,
+        jobs,
+        approvals: [],
+        questions: [],
+        projections,
+      },
+    }
+  }
+
+  const approvalInvocation = (): FixtureRemoteEventInvocationFrame => ({
+    type: 'waterfall',
+    event: 'approval/request',
+    eventId: pendingApprovalEventId,
+    agentId: sid('fx-alpha'),
+    request: {
+      toolName: 'dangerous_tool',
+      reason: 'fixture 常驻审批（可答：批准/拒绝后消失）',
+    },
+  })
+
+  const questionInvocation = (): FixtureRemoteEventInvocationFrame => ({
+    type: 'waterfall',
+    event: 'user-questions/request',
+    eventId: pendingQuestionEventId,
+    agentId: sid('fx-alpha'),
+    request: {
+      questions: fixtureQuestions,
+    },
+  })
+
+  async function* openControl(signal: AbortSignal): AsyncGenerator<FixtureControlFrame> {
+    signal.throwIfAborted()
+    const conn = new FxInbox<FixtureControlFrame>()
+    controlConns.add(conn)
+    const breakNow = (): void => { conn.breakNow() }
+    streamBreakers.add(breakNow)
+    try {
+      yield controlBaseline()
+      yield* conn.drain(signal)
+    } finally {
+      streamBreakers.delete(breakNow)
+      controlConns.delete(conn)
+    }
+  }
+
+  /**
+   * The owner Gateway's `remoteAccess/follow` stream for this reader: a non-owner baseline on open,
+   * then the grant changes of every refresh. A fixture without a source grant allows only page reads.
+   */
+  async function* openAccess(signal: AbortSignal): AsyncGenerator<RemoteAccessFrame> {
+    signal.throwIfAborted()
+    const conn = new FxInbox<RemoteAccessFrame>()
+    const grants = grantsOf()
+    accessConns.set(conn, grants)
+    const breakNow = (): void => { conn.breakNow() }
+    streamBreakers.add(breakNow)
+    try {
+      yield {
+        type: 'baseline',
+        owner: false,
+        grants: [{ resource: { kind: 'global' }, actions: FIXTURE_GLOBAL_READS }, ...grants.values()],
+      }
+      yield* conn.drain(signal)
+    } finally {
+      streamBreakers.delete(breakNow)
+      accessConns.delete(conn)
+    }
+  }
+
+  async function* openWorkspace(signal: AbortSignal): AsyncGenerator<WorkspaceFollowFrame> {
+    signal.throwIfAborted()
+    const conn = new FxInbox<WorkspaceFollowFrame>()
+    workspaceConns.add(conn)
+    const breakNow = (): void => { conn.breakNow() }
+    streamBreakers.add(breakNow)
+    try {
+      yield workspaceBaseline()
+      yield* conn.drain(signal)
+    } finally {
+      streamBreakers.delete(breakNow)
+      workspaceConns.delete(conn)
+    }
+  }
+
+  async function* openWorkspaceFileChanges(signal: AbortSignal): AsyncGenerator<FixtureWorkspaceFileWatchFrame> {
+    signal.throwIfAborted()
+    const conn = new FxInbox<FixtureWorkspaceFileWatchFrame>()
+    const breakNow = (): void => { conn.breakNow() }
+    streamBreakers.add(breakNow)
+    // Opt-in only: an unprompted frame would age every preview of demo.txt
+    // into its changed state on a timer the assembled snapshots cannot see.
+    const announce = options.fileChanges
+      ? setTimeout(() => {
+        conn.push({ kind: 'change', change: { absolutePath: `${WORKSPACE_FILES_ROOT}/notes/demo.txt`, version: 'fx-demo-v2' } })
+      }, 1000)
+      : undefined
+    try {
+      yield { kind: 'ready' }
+      yield* conn.drain(signal)
+    } finally {
+      if (announce !== undefined) clearTimeout(announce)
+      streamBreakers.delete(breakNow)
+    }
+  }
+
+  async function* openRemoteEvents(
+    signal: AbortSignal,
+  ): AsyncGenerator<FixtureRemoteEventReadyFrame | FixtureRemoteEventFrame> {
+    signal.throwIfAborted()
+    const clientId = randomUuid()
+    const conn = new FxInbox<FixtureRemoteEventFrame>()
+    remoteEventConns.set(clientId, conn)
+    // Periodic material for the RPC-panel acceptance: flip fx-gamma every 5s.
+    // fx-gamma only; the conversation replay owns fx-alpha's running state.
+    const timer = setInterval(() => {
+      const gamma = summaryOf(sid('fx-gamma'))
+      /* v8 ignore next -- the fixture never removes fx-gamma. */
+      if (gamma !== undefined) setRunning(gamma.sessionId, !gamma.running)
+    }, 5000)
+    try {
+      yield { type: 'ready', clientId, host: { home: FIXTURE_HOME } }
+      if (approvalPending) yield approvalInvocation()
+      if (questionPending) yield questionInvocation()
+      yield* conn.drain(signal)
+    } finally {
+      clearInterval(timer)
+      remoteEventConns.delete(clientId)
+    }
+  }
+
+  async function* openFollow(
+    request: FixtureFollowRequest,
+    signal: AbortSignal,
+  ): AsyncGenerator<FixtureFollowFrame> {
+    signal.throwIfAborted()
+    const sessionId = request.address.kind === 'session'
+      ? request.address.sessionId
+      : request.address.childSessionId
+    if (summaryOf(sessionId) === undefined) throw new Error(`fixture: no session ${sessionId}`)
+    const conn = new FxInbox<FixtureFollowEventFrame>()
+    let conns = followConns.get(sessionId)
+    if (conns === undefined) {
+      conns = new Set()
+      followConns.set(sessionId, conns)
+    }
+    conns.add(conn)
+    const breakNow = (): void => { conn.breakNow() }
+    streamBreakers.add(breakNow)
+    const snapshot = [...logOf(sessionId)]
+    const cursor = snapshot.at(-1)?.seq ?? -1
+    const summary = summaryOf(sessionId)
+    /* v8 ignore next -- existence was checked before the stream registered. */
+    if (summary === undefined) throw new Error(`fixture: no session ${sessionId}`)
+    const initial = pageOf(snapshot, undefined, request.maxMessages ?? 50, request.turnWindow)
+    let nextSeq = cursor + 1
+    try {
+      yield {
+        type: 'snapshot',
+        header: {
+          version: SESSION_FORMAT_VERSION,
+          id: sessionId,
+          createdAt: summary.updatedAt,
+          ...(summary.cwd === undefined ? {} : { cwd: summary.cwd }),
+          ...(summary.parentSessionId === undefined ? {} : { parentSession: summary.parentSessionId }),
+          isSeeded: summary.parentSessionId !== undefined,
+          // A branch's header says it is seeded and names its source; the durable header vocabulary
+          // has no `fork`, which the projection value states instead.
+          ...(summary.origin === 'subagent' ? { origin: 'subagent' as const } : {}),
+          ...(summary.agentPreset === undefined ? {} : { agentPreset: summary.agentPreset }),
+        },
+        cursor,
+        records: initial.records,
+        hasMore: initial.hasMore,
+        projections: {
+          asOfSeq: cursor,
+          values: {
+            ...projectionValuesOf(snapshot),
+            ...(summary.forkLineage === undefined ? {} : { forkLineage: summary.forkLineage }),
+          },
+        },
+        ...(request.assistantStream === true ? {
+          assistantStream: {
+            revision: assistantRevisions.get(sessionId) ?? 0,
+            ...(activeAttempts.get(sessionId) === undefined
+              ? {}
+              : { activeAttempt: {
+                attemptId: (activeAttempts.get(sessionId) as FixtureAttemptState).attemptId,
+                startedAfterSeq: (activeAttempts.get(sessionId) as FixtureAttemptState).startedAfterSeq,
+                turn: (activeAttempts.get(sessionId) as FixtureAttemptState).turn,
+                step: (activeAttempts.get(sessionId) as FixtureAttemptState).step,
+                nextIndex: (activeAttempts.get(sessionId) as FixtureAttemptState).index,
+                stream: (activeAttempts.get(sessionId) as FixtureAttemptState).stream.snapshot(),
+              } }),
+          },
+        } : {}),
+      }
+      for await (const frame of conn.drain(signal)) {
+        if (frame.type === 'assistant-stream') {
+          yield frame
+          continue
+        }
+        if (frame.event.seq < nextSeq) continue
+        if (frame.event.seq !== nextSeq) {
+          throw new Error(`fixture: session event stream skipped seq ${String(nextSeq)}`)
+        }
+        nextSeq++
+        yield frame
+      }
+    } finally {
+      streamBreakers.delete(breakNow)
+      conns.delete(conn)
+      if (conns.size === 0) followConns.delete(sessionId)
+    }
+  }
+
+  const answerRemoteEvent = (result: FixtureRemoteEventResult): ConnectionRpcResult<unknown> => {
+    if (!remoteEventConns.has(result.clientId)) {
+      return {
+        ok: false,
+        error: {
+          code: 'gateway/invocation-unavailable',
+          message: 'fixture Remote event result identifies no active event stream',
+          details: {},
+        },
+      }
+    }
+    if (result.eventId === pendingApprovalEventId) {
+      if (!approvalPending) return { ok: true, value: undefined }
+      approvalPending = false
+    } else if (result.eventId === pendingQuestionEventId) {
+      if (!questionPending) return { ok: true, value: undefined }
+      questionPending = false
+    } else {
+      return { ok: true, value: undefined }
+    }
+    emitRemoteFrame({ type: 'cancel', eventId: result.eventId })
+    return { ok: true, value: undefined }
+  }
+
+  const workspaceApi: FixtureWorkspaceApi = {
+    create: (request) => {
+      const existing = workspaces.find(workspace => workspace.path === request.path)
+      if (existing !== undefined) {
+        return sessionOk({ workspace: workspaceSnapshot(existing), created: false })
+      }
+      const now = new Date().toISOString()
+      const created: FixtureWorkspace = {
+        workspaceId: wid(`fx-ws-${nextWorkspace++}`),
+        path: request.path,
+        title: request.path.split('/').filter(Boolean).at(-1) ?? request.path,
+        sessionIds: [],
+        createdAt: now,
+        updatedAt: now,
+      }
+      workspaces.unshift(created)
+      const workspace = workspaceSnapshot(created)
+      emitWorkspace({ type: 'upsert', workspace })
+      return sessionOk({ workspace, created: true })
+    },
+    rename: (request) => {
+      const workspace = workspaces.find(candidate => candidate.workspaceId === request.workspaceId)
+      if (workspace === undefined) {
+        return sessionErr({
+          code: 'workspace/not-found',
+          message: `no workspace ${request.workspaceId}`,
+          details: { workspaceId: request.workspaceId },
+        })
+      }
+      const title = request.title.trim()
+      if (title === '') {
+        return sessionErr({
+          code: 'gateway/bad-request',
+          message: 'Workspace rename requires a non-blank title',
+          details: {},
+        })
+      }
+      if (title !== workspace.title) {
+        if (workspaces.some(candidate => candidate.workspaceId !== request.workspaceId && candidate.title === title)) {
+          return sessionErr({
+            code: 'workspace/name-conflict',
+            message: `workspace name '${title}' is already in use`,
+            details: { name: title },
+          })
+        }
+        workspace.title = title
+        workspace.updatedAt = new Date().toISOString()
+        emitWorkspace({ type: 'upsert', workspace: workspaceSnapshot(workspace) })
+      }
+      return sessionOk({ workspace: workspaceSnapshot(workspace) })
+    },
+    delete: (request) => {
+      const index = workspaces.findIndex(workspace => workspace.workspaceId === request.workspaceId)
+      if (index === -1) {
+        return sessionErr({
+          code: 'workspace/not-found',
+          message: `no workspace ${request.workspaceId}`,
+          details: { workspaceId: request.workspaceId },
+        })
+      }
+      workspaces.splice(index, 1)
+      emitWorkspace({ type: 'remove', workspaceId: request.workspaceId })
+      return sessionOk({ deleted: true })
+    },
+    insertBefore: (request) => {
+      const source = workspaces.findIndex(workspace => workspace.workspaceId === request.workspaceId)
+      const anchor = request.beforeWorkspaceId === undefined
+        ? workspaces.length
+        : workspaces.findIndex(workspace => workspace.workspaceId === request.beforeWorkspaceId)
+      const missing = source === -1
+        ? request.workspaceId
+        : anchor === -1
+          ? request.beforeWorkspaceId
+          : undefined
+      if (missing !== undefined) {
+        return sessionErr({
+          code: 'workspace/not-found',
+          message: `no workspace ${missing}`,
+          details: { workspaceId: missing },
+        })
+      }
+      if (request.beforeWorkspaceId !== request.workspaceId) {
+        const previousOrder = workspaces.map(workspace => workspace.workspaceId)
+        const [workspace] = workspaces.splice(source, 1)
+        /* v8 ignore next -- source was resolved from the same array immediately above. */
+        if (workspace === undefined) throw new Error(`fixture lost workspace ${request.workspaceId}`)
+        const at = request.beforeWorkspaceId === undefined
+          ? workspaces.length
+          : workspaces.findIndex(candidate => candidate.workspaceId === request.beforeWorkspaceId)
+        workspaces.splice(at, 0, workspace)
+        if (workspaces.some((candidate, index) => candidate.workspaceId !== previousOrder[index])) {
+          emitWorkspace({
+            type: 'order',
+            workspaceIds: workspaces.map(candidate => candidate.workspaceId),
+          })
+        }
+      }
+      return sessionOk({ workspaceIds: workspaces.map(candidate => candidate.workspaceId) })
+    },
+    insertSessionBefore: (request) => {
+      const workspace = workspaces.find(candidate => candidate.workspaceId === request.workspaceId)
+      if (workspace === undefined) {
+        return sessionErr({
+          code: 'workspace/not-found',
+          message: `no workspace ${request.workspaceId}`,
+          details: { workspaceId: request.workspaceId },
+        })
+      }
+      if (!workspace.sessionIds.includes(request.sessionId)
+        || (request.beforeSessionId !== undefined && !workspace.sessionIds.includes(request.beforeSessionId))) {
+        return sessionErr({
+          code: 'workspace/move-invalid',
+          message: `session or anchor is not accounted by workspace ${request.workspaceId}`,
+          details: {
+            workspaceId: request.workspaceId,
+            sessionId: request.sessionId,
+            ...request.beforeSessionId === undefined ? {} : { beforeSessionId: request.beforeSessionId },
+          },
+        })
+      }
+      const without = workspace.sessionIds.filter(id => id !== request.sessionId)
+      const at = request.beforeSessionId === undefined ? without.length : without.indexOf(request.beforeSessionId)
+      const sessionIds = [...without.slice(0, at), request.sessionId, ...without.slice(at)]
+      if (!sessionIds.every((id, index) => id === workspace.sessionIds[index])) {
+        workspace.sessionIds = sessionIds
+        workspace.updatedAt = new Date().toISOString()
+        emitWorkspace({ type: 'upsert', workspace: workspaceSnapshot(workspace) })
+      }
+      return sessionOk({ workspace: workspaceSnapshot(workspace) })
+    },
+    archiveSession: (request) => {
+      if (summaryOf(request.sessionId) === undefined) {
+        return sessionErr({
+          code: 'session/not-found',
+          message: `no session ${request.sessionId}`,
+          details: { sessionId: request.sessionId },
+        })
+      }
+      if (!archivedSessionIds.includes(request.sessionId)) {
+        archivedSessionIds.push(request.sessionId)
+        emitWorkspace({ type: 'archived', archivedSessionIds: [...archivedSessionIds] })
+      }
+      return sessionOk({ archivedSessionIds: [...archivedSessionIds] })
+    },
+    unarchiveSession: (request) => {
+      if (archivedSessionIds.includes(request.sessionId)) {
+        archivedSessionIds.splice(archivedSessionIds.indexOf(request.sessionId), 1)
+        emitWorkspace({ type: 'archived', archivedSessionIds: [...archivedSessionIds] })
+      }
+      return sessionOk({ archivedSessionIds: [...archivedSessionIds] })
+    },
+  }
+
+  const rpc: ClientConnectionRpc = {
+    call(channel, endpoint, payload, signal) {
+      if (channel !== '/api') {
+        return Promise.reject(new Error(`fixture connection RPC channel ${JSON.stringify(channel)} is unavailable`))
+      }
+      const args = (payload as {
+        args: Readonly<{
+          agentId: SessionId
+          line?: string
+          query?: string
+          path?: string
+          range?: { offset?: number; limit?: number }
+          name?: string
+          images?: readonly unknown[]
+          // A goal ref and a credential reference name share this wire field name.
+          ref?: string | { id: string; revision: number }
+          refs?: readonly string[]
+          value?: string
+          ns?: string
+          settingsNs?: string
+          agentPreset?: string
+          from?: string
+          id?: string
+          request?: unknown
+          _request?: unknown
+        }>
+      }).args
+      const sessionId = args.agentId
+      const callSignal = signal ?? new AbortController().signal
+      const request = args.request
+      switch (endpoint) {
+        case 'commands/list': return Promise.resolve(commandRemotes.list(sessionId))
+        case 'commands/execute': return Promise.resolve(commandRemotes.execute(sessionId, args.line as string, args.images ?? []))
+        case 'fileReferences/list': return Promise.resolve(referenceRemotes.files(sessionId, args.query ?? ''))
+        case 'sessionReferenceResolver/candidates': return Promise.resolve(referenceRemotes.sessions(sessionId, args.query ?? ''))
+        case 'directoryPicker/pick': return Promise.resolve(directoryPickerRemotes.pick())
+        case 'directoryPicker/list': return Promise.resolve(directoryPickerRemotes.list(args.path))
+        case 'directoryPicker/createDirectory':
+          return Promise.resolve(directoryPickerRemotes.createDirectory(args.path ?? '', args.name ?? ''))
+        case 'goals/get': return Promise.resolve(goalRemotes.get(sessionId))
+        case 'goals/create': return Promise.resolve(goalRemotes.create(sessionId, {
+          objective: (request as { objective?: string } | undefined)?.objective as string,
+          ...(request as { maxGoalRounds?: number } | undefined)?.maxGoalRounds === undefined
+            ? {}
+            : { maxGoalRounds: (request as { maxGoalRounds: number }).maxGoalRounds },
+        }))
+        case 'goals/edit': return Promise.resolve(goalRemotes.edit(
+          sessionId,
+          args.ref as FxGoalRef,
+          request as { objective?: string; maxGoalRounds?: number },
+        ))
+        case 'goals/pause': return Promise.resolve(goalRemotes.pause(sessionId, args.ref as FxGoalRef))
+        case 'goals/resume': return Promise.resolve(goalRemotes.resume(sessionId, args.ref as FxGoalRef))
+        case 'goals/complete': return Promise.resolve(goalRemotes.complete(sessionId, args.ref as FxGoalRef))
+        case 'goals/clear': return Promise.resolve(goalRemotes.clear(sessionId, args.ref as FxGoalRef))
+        case 'agentPresets/list': return Promise.resolve(presetRemotes.list())
+        case 'agentPresets/select': return Promise.resolve(presetRemotes.select(sessionId, args.agentPreset as string))
+        case 'agentPresets/read': return Promise.resolve(presetRemotes.read(args.agentPreset as string))
+        case 'agentPresets/copy': return Promise.resolve(presetRemotes.copy(args.from as string, args.id as string))
+        case 'agentPresets/deletePreset': return Promise.resolve(presetRemotes.deletePreset(args.id as string))
+        case 'subagents/list': return Promise.resolve({
+          ok: true,
+          value: { entries: [], parentAvailable: true },
+        })
+        case 'subagents/prompt': return Promise.resolve({
+          ok: true,
+          value: {
+            messageId: `fixture-message-${(request as { childSessionId: SessionId }).childSessionId}`,
+          },
+        })
+        case 'subagents/interruptByParent': return Promise.resolve({ ok: true, value: { accepted: true } })
+        case 'credentials/describe': return Promise.resolve(credentialRemotes.describe(args.refs ?? []))
+        case 'credentials/set': return Promise.resolve(credentialRemotes.set(args.ref as string))
+        case 'credentials/unset': return Promise.resolve(credentialRemotes.unset(args.ref as string))
+        case 'settings/describe': return Promise.resolve(settingsRemotes.describe())
+        case 'settings/canOpenAgentPresetDirectory': return Promise.resolve({ ok: true, value: true })
+        case 'settings/openSettingsDocument': return Promise.resolve(settingsRemotes.openSettingsDocument())
+        case 'settings/openAgentPresetDirectory': return Promise.resolve(
+          settingsRemotes.openAgentPresetDirectory(args.agentPreset as string),
+        )
+        case 'skills/list': {
+          const skillRequest = request as { readonly sessionId: SessionId }
+          const missing = requireRemoteSession(skillRequest)
+          if (missing !== undefined) return missing
+          return sessionOk({
+            skills: [
+              { name: 'fixture-demo', description: 'fixture 技能样本', whenToUse: '仅供 UI 目录渲染验收', modelInvocable: true },
+              { name: 'fixture-user-only', description: 'fixture 仅用户技能样本', modelInvocable: false },
+            ],
+          })
+        }
+        case 'session/openWorkspacePath': {
+          return sessionOk({ opened: true as const })
+        }
+        case 'workspaceFiles/read': {
+          return Promise.resolve(workspaceFileRemotes.read(args.path ?? '', args.range ?? {}))
+        }
+        case 'workspaceFiles/stat': {
+          return Promise.resolve(workspaceFileRemotes.stat(args.path ?? ''))
+        }
+        case 'workspaceFiles/list': {
+          return Promise.resolve(workspaceFileRemotes.list(args.path ?? ''))
+        }
+        case 'session/canOpenWorkspacePath': return Promise.resolve({ ok: true, value: true })
+        case 'session/modelCatalog': return Promise.resolve({
+          ok: true,
+          value: {
+            default: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
+            routableProviders: ['deepseek-official', 'openai', 'acme-gateway'],
+            groups: fixtureModelGroups(),
+            failures: [],
+          },
+        })
+        case 'llm/listProviders': return Promise.resolve({
+          ok: true,
+          value: [
+            { id: 'deepseek-official', name: 'DeepSeek' },
+            { id: 'openai', name: 'openai' },
+            { id: 'acme-gateway', name: 'Acme Gateway' },
+          ],
+        })
+        case 'llm/listConfigurableProviders': return Promise.resolve({
+          ok: true,
+          value: [
+            { provider: 'deepseek-official', displayName: 'DeepSeek', settingsNs: 'llm-deepseek', settingsPath: [] },
+            { provider: 'openai', displayName: 'openai', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'], declared: false },
+            { provider: 'anthropic', displayName: 'anthropic', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'anthropic'], declared: false },
+            { provider: 'acme-gateway', displayName: 'Acme Gateway', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'acme-gateway'], declared: true },
+          ],
+        })
+        // The fixture endpoint is imaginary, so interrogation answers the
+        // catalog it already serves without a network request.
+        case 'llm/discoverModels': return Promise.resolve({
+          ok: true,
+          value: fixtureModelGroups().flatMap(group => group.models.map(model => ({ id: model.id, name: model.name }))),
+        })
+        case 'settings/update': return Promise.resolve(settingsRemotes.update(args.ns as string))
+        case 'settings/replace': return Promise.resolve(settingsRemotes.replace(args.ns as string))
+        case 'settings/mutate': return Promise.resolve(settingsRemotes.mutate(args.ns as string))
+        case 'session/list': return sessionApi.list(
+          args._request as Parameters<FixtureSessionApi['list']>[0],
+        )
+        case 'session/search': return sessionApi.search(
+          request as Parameters<FixtureSessionApi['search']>[0],
+          callSignal,
+        )
+        case 'session/create': return sessionApi.create(
+          request as Parameters<FixtureSessionApi['create']>[0],
+        )
+        case 'session/selectModel': return sessionApi.selectModel(
+          request as Parameters<FixtureSessionApi['selectModel']>[0],
+        )
+        case 'session/rename': return sessionApi.rename(
+          request as Parameters<FixtureSessionApi['rename']>[0],
+        )
+        case 'session/fork': return sessionApi.fork(
+          request as Parameters<FixtureSessionApi['fork']>[0],
+        )
+        case 'session/prompt': return sessionApi.prompt(
+          request as Parameters<FixtureSessionApi['prompt']>[0],
+        )
+        case 'session/attachment': return sessionApi.attachment(
+          request as Parameters<FixtureSessionApi['attachment']>[0],
+        )
+        case 'session/updateQueue': return sessionApi.updateQueue(
+          request as Parameters<FixtureSessionApi['updateQueue']>[0],
+        )
+        case 'session/cancel': return sessionApi.cancel(
+          request as Parameters<FixtureSessionApi['cancel']>[0],
+        )
+        case 'session/page': {
+          const page = request as FixturePageRequest
+          const pageSessionId = page.address.kind === 'session'
+            ? page.address.sessionId
+            : page.address.childSessionId
+          return sessionApi.history({
+            sessionId: pageSessionId,
+            throughSeq: page.throughSeq,
+            ...page.beforeSeq === undefined ? {} : { beforeSeq: page.beforeSeq },
+            ...page.maxMessages === undefined ? {} : { maxMessages: page.maxMessages },
+            ...page.turnWindow === undefined ? {} : { turnWindow: page.turnWindow },
+          })
+        }
+        case '$events/result': return Promise.resolve(answerRemoteEvent(parseFixtureRemoteEventResult(args)))
+        case 'workspace/create': return workspaceApi.create(request as WorkspaceCreateRequest)
+        case 'workspace/rename': return workspaceApi.rename(request as WorkspaceRenameRequest)
+        case 'workspace/delete': return workspaceApi.delete(request as WorkspaceDeleteRequest)
+        case 'workspace/insertBefore': return workspaceApi.insertBefore(request as WorkspaceInsertBeforeRequest)
+        case 'workspace/insertSessionBefore': return workspaceApi.insertSessionBefore(
+          request as WorkspaceInsertSessionBeforeRequest,
+        )
+        case 'workspace/archiveSession': return workspaceApi.archiveSession(request as WorkspaceArchiveSessionRequest)
+        case 'workspace/unarchiveSession': return workspaceApi.unarchiveSession(
+          request as WorkspaceUnarchiveSessionRequest,
+        )
+        default:
+          return Promise.reject(new Error(`fixture connection RPC endpoint ${JSON.stringify(endpoint)} is unavailable`))
+      }
+    },
+    open(channel, endpoint, payload, signal) {
+      if (channel !== '/api') {
+        throw new Error(`fixture connection RPC channel ${JSON.stringify(channel)} is unavailable`)
+      }
+      const args = (payload as { args: Readonly<{ request?: unknown }> }).args
+      switch (endpoint) {
+        case '$events': return openRemoteEvents(signal)
+        case 'session/control': return openControl(signal)
+        case 'remoteAccess/follow': return openAccess(signal)
+        case 'session/follow': return openFollow(args.request as FixtureFollowRequest, signal)
+        case 'workspace/follow': return openWorkspace(signal)
+        case 'workspaceFiles/changes': return openWorkspaceFileChanges(signal)
+        default:
+          throw new Error(`fixture connection stream endpoint ${JSON.stringify(endpoint)} is unavailable`)
+      }
+    },
+  }
+  return {
+    rpc, prompts, cancellations, refreshGrants,
+    history: sessionId => [...logs.get(sid(sessionId)) ?? []],
+    completeReply(sessionId) {
+      const finish = heldReplies.get(sid(sessionId))
+      if (finish === undefined) throw new Error(`fixture: no held reply for ${sessionId}`)
+      finish()
+    },
+    dispose() {
+      for (const replay of replays.values()) if (replay.timer !== undefined) clearTimeout(replay.timer)
+      replays.clear()
+      heldReplies.clear()
+      for (const breakNow of streamBreakers) breakNow()
+      for (const conn of remoteEventConns.values()) (conn as FxInbox<FixtureRemoteEventFrame>).breakNow()
+      if (Object.getOwnPropertyDescriptor(globalThis, '__fxTiming')?.value === timingHooks) {
+        if (timingDescriptor === undefined) Reflect.deleteProperty(globalThis, '__fxTiming')
+        else Object.defineProperty(globalThis, '__fxTiming', timingDescriptor)
+      }
+    },
+  }
+}
+
+/**
+ * Build the browser fixture transport from the current page's query switches.
+ * @returns an in-memory Connection RPC transport.
+ */
+export function createFixtureConnectionRpc(): ClientConnectionRpc {
+  return createFixtureWorld(fixtureOptionsFromLocation()).rpc
+}
+
+/** Browser query mapping; direct unit callers pass FixtureOptions explicitly. */
+function fixtureOptionsFromLocation(): FixtureOptions {
+  if (typeof location === 'undefined') return {}
+  const query = new URLSearchParams(location.search)
+  const promptCode = query.get('fixturePromptCode')
+  const cancelCode = query.get('fixtureCancelCode')
+  return {
+    empty: query.get('fixture') === 'empty',
+    rejectPrompt: query.get('fixturePrompt') === 'reject',
+    // A page names the code its Host refuses a prompt with, so the copy and the view a reader gets for
+    // that refusal are exercised against the assembled page.
+    ...(query.get('fixturePrompt') === 'reject' && promptCode !== null ? { rejectPromptCode: promptCode } : {}),
+    // A page names the code its Host refuses a cancel with, so the one action a running Session offers
+    // is exercised against its own copy for that reason.
+    ...(cancelCode === null ? {} : { cancelRefusal: cancelCode }),
+    failWorkspaceAttach: query.get('fixtureAttach') === 'fail',
+    dropSessionCreateResponse: query.get('fixtureSessionCreate') === 'drop-response',
+    createFrameOrder: query.get('fixtureFrames') === 'workspace-first' ? 'workspace-first' : 'session-first',
+    fileChanges: query.get('fixtureFileChanges') === 'demo',
+    presented: query.get('fixturePresented') === '1',
+    viewerFork: query.get('fixtureFork') === 'viewer' || query.get('fixtureFork') === 'refused'
+      || query.get('fixtureFork') === 'running',
+    ...(query.get('fixtureFork') === 'running' ? { forkRunning: true } : {}),
+    // A page names the code its Host would refuse with, so the copy and the view a reader gets for
+    // that refusal are exercised against the assembled page.
+    ...(query.get('fixtureFork') === 'refused'
+      ? { forkRefusal: query.get('fixtureForkRefusal') ?? 'fork-not-permitted' }
+      : {}),
+  }
+}
diff --git a/packages/experimental/liveshare/tests/viewer-fork-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-fork-artifact.client.spec.tsx
new file mode 100644
index 0000000000..d4f40383b8
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-fork-artifact.client.spec.tsx
@@ -0,0 +1,251 @@
+// @vitest-environment jsdom
+/**
+ * The assembled viewer page branching a share the owner allowed: which Session gets the branch action,
+ * what the page shows for the child, and what closing the grant again does to both.
+ */
+
+import { act, cleanup, fireEvent, screen, waitFor, within } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import type { FixtureWorld } from './viewer-fixture.client.ts'
+import { installViewerInputFixture, promptEcho } from './viewer-input-fixture.client.ts'
+import type { ViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+let inputFixture: ViewerInputFixture | undefined
+let owner: FixtureWorld | undefined
+let stopRelay: (() => Promise<void>) | undefined
+let releaseContext: (() => void) | undefined
+
+afterEach(async () => {
+  releaseContext?.()
+  releaseContext = undefined
+  await inputFixture?.dispose()
+  await stopRelay?.()
+  owner?.dispose()
+  inputFixture = undefined
+  stopRelay = undefined
+  owner = undefined
+  cleanup()
+  vi.unstubAllGlobals()
+  document.body.replaceChildren()
+  document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+})
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+/** The Relay answer this page reads: the owner's name, build, and the mode this share carries. */
+function contextAnswer(mode: { readonly sessionMode: string; readonly sessionModeReason?: string }): Response {
+  return Response.json({
+    shareId: 'share-1',
+    sessionId: 'fx-alpha',
+    ownerDisplayName: 'Owner',
+    dshVersion: '0.1.5-rc.2+fixture',
+    capabilities: {
+      readOnly: true,
+      ...mode,
+    },
+  })
+}
+
+describe('Assembled liveshare viewer page branching a share', () => {
+  it('branches the shared Session into the reader\'s own child, then closes with the grant', async () => {
+    inputFixture = installViewerInputFixture()
+    history.replaceState(null, '', '/?shareId=share-1&fixture&fixtureFork=viewer')
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    Object.defineProperty(navigator, 'languages', { value: ['en-US'], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: 'en-US', configurable: true })
+    // The share's own answer is the page's only read of what the owner granted; every other request
+    // this page makes reaches the scripted owner behind the stand-in Relay.
+    // The share's answer as the Relay reports it: granting a branch, then narrowing back to view-only,
+    // then stopping the share outright — the page follows whichever verdict is current.
+    let mode: { readonly sessionMode: string; readonly sessionModeReason?: string } =
+      { sessionMode: 'fork-readonly' }
+    let releaseAnswer: (() => void) | undefined
+    const answerHeld = new Promise<void>((resolve) => { releaseAnswer = resolve; releaseContext = resolve })
+    owner = createFixtureFaces({ viewerSourceGrant: () => mode, controlledReply: true, viewerFork: true })
+    stopRelay = installViewerRelay({
+      owner: owner.rpc,
+      other: (url) => {
+        // The page waits for nothing, so this answer is held back until the test has seen the shared
+        // Session assembled without it.
+        if (url.includes('/__liveshare/context')) return answerHeld.then(() => { owner?.refreshGrants(); return contextAnswer(mode) })
+        if (url.endsWith('/health')) return Promise.resolve(Response.json({ release_id: 'release-7' }))
+        return Promise.reject(new Error(`Unexpected request: ${url}`))
+      },
+    })
+
+    await act(async () => {
+      await inputFixture?.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' })
+    })
+
+    // The shared Session opens by itself and streams the fixture history, read-only.
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash"]')).not.toBeNull()
+    }, { timeout: 30_000 })
+    expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    expect(document.body.textContent).toContain('Read only: you can drive this Session, but you read files inside the share’s scope only and modify nothing.')
+    // The read-only page offers no way to change the shared Session's own settings.
+    expect(screen.queryByRole('button', { name: /^Access mode/u })).toBeNull()
+    // Reordering Sessions and Workspaces is the same Host state rename and delete write, so no row on
+    // this page is a drag handle either.
+    expect(document.querySelector('[role="treeitem"][draggable="true"]')).toBeNull()
+    // Before any branch exists, no row on this page is marked as one.
+    expect(screen.queryByText('Fork')).toBeNull()
+    // The branch action follows the access snapshot the owner's Gateway sent this reader, not the
+    // share's own answer, which is still in flight here.
+    await screen.findAllByRole('button', { name: 'Branch into a new conversation' }, { timeout: 15_000 })
+    releaseAnswer?.()
+
+    // The owner allowed branching, so the shipped branch action is offered on the shared Session.
+    // Each completed turn carries one, and the reader branches from the latest.
+    const branches = await screen.findAllByRole(
+      'button', { name: 'Branch into a new conversation' }, { timeout: 15_000 },
+    )
+    const branch = branches.at(-1)
+    expect(branch).toBeDefined()
+    if (branch === undefined) throw new Error('no branch action on the shared Session')
+    await act(async () => { fireEvent.click(branch) })
+
+    // The child opens in the same page: the sidebar names where it came from and states the ceiling the
+    // host installed. The share it forked from is a view-tier (`fork-readonly` reads as `view`) one, so
+    // this child runs under the read-only fork ceiling and the row states exactly that; a write-tier
+    // share's child carries the bounded write ceiling instead, whose host half
+    // `readonly-fork-cold-child.spec.ts` covers.
+    await waitFor(() => {
+      expect(document.querySelector('[contenteditable="true"]')).not.toBeNull()
+    }, { timeout: 15_000 })
+    const childRow = document.querySelector<HTMLElement>('[role="treeitem"][aria-selected="true"]')
+    if (childRow === null) throw new Error('fork child sidebar row is not selected')
+    const mark = childRow.querySelector<HTMLElement>('[data-slot="sidebar.session.row.leading"] span')
+    if (mark === null) throw new Error('fork child lineage marker is missing')
+    // The shipped Tooltip listens for pointer events; a hover dispatched as a mouse event never raises
+    // its bubble, so the ceiling statement would stay unread.
+    await act(async () => { fireEvent.pointerEnter(mark) })
+    expect(await screen.findByText('Forked from “Fixture 历史会话”')).toBeDefined()
+    await act(async () => { fireEvent.pointerLeave(mark) })
+    expect(screen.getAllByRole('button', { name: 'Send message' }).length).toBeGreaterThan(0)
+    // Prompting the branch is not reconfiguring it: the child gets no preset seat and no session
+    // verbs — no rename, no archive, and no branch of the branch — so its row menu keeps only Copy
+    // Session ID, while the shared Session's row still offers the one verb this page may use there.
+    expect(screen.queryByRole('button', { name: /^Access mode/u })).toBeNull()
+    /**
+     * Check one row's menu after asynchronous preparation, including shortcut-bearing labels.
+     * @param row - Session row to read.
+     * @param labels - Expected accessible label prefixes in menu order.
+     */
+    const expectMenu = async (row: HTMLElement, labels: readonly string[]): Promise<void> => {
+      const trigger = within(row).getByRole('button', { name: /Session actions for/u })
+      await act(async () => { fireEvent.click(trigger) })
+      const items = await screen.findAllByRole('menuitem')
+      expect(items).toHaveLength(labels.length)
+      labels.forEach((label, index) => {
+        expect(screen.getByRole('menuitem', { name: new RegExp(`^${label}`, 'u') })).toBe(items[index])
+      })
+      await act(async () => { fireEvent.keyDown(document, { key: 'Escape' }) })
+      await waitFor(() => { expect(screen.queryByRole('menu')).toBeNull() })
+    }
+    await expectMenu(childRow, ['Copy Session ID'])
+    const sourceRow = document.querySelector<HTMLElement>('[role="treeitem"][data-row-key="session:fx-alpha"]')
+    if (sourceRow === null) throw new Error('shared Session row is not listed')
+    expect(sourceRow).not.toBe(childRow)
+    await expectMenu(sourceRow, ['Fork session', 'Copy Session ID'])
+
+    const childId = childRow.dataset.rowKey?.replace(/^session:/u, '')
+    if (childId === undefined) throw new Error('scripted Owner child is not listed')
+    const userText = 'fork child actual input → Send'
+    await inputFixture.send(childId, userText, 'Send message')
+    await waitFor(() => { expect(owner?.prompts).toHaveLength(1) })
+    const request = owner.prompts[0]
+    if (request === undefined) throw new Error('no child prompt at the scripted Owner')
+    expect(request).toMatchObject({ sessionId: childId, mode: 'queue', content: [{ type: 'text', text: userText }] })
+    expect(request.requestId).toMatch(/^[0-9a-f-]{36}$/u)
+    promptEcho(owner.history(childId), request)
+    expect(owner.history('fx-alpha').some(event => event.type === 'user/message'
+      && Reflect.get(event.data.source, 'rpcId') === request.requestId)).toBe(false)
+    await act(async () => { owner?.completeReply(childId) })
+    const replyText = `回声：${userText}。这是 fixture 的流式回复，用于验证打字机增长与定稿切换。`
+    await waitFor(() => { expect(document.body.textContent).toContain(replyText) }, { timeout: 15_000 })
+
+    await act(async () => { fireEvent.click(sourceRow) })
+    await waitFor(() => { expect(document.querySelector('[contenteditable="true"]')).toBeNull() })
+    expect(document.body.textContent).not.toContain(replyText)
+    await act(async () => { fireEvent.click(childRow) })
+    await waitFor(() => {
+      expect(document.querySelector('[contenteditable="true"]')).not.toBeNull()
+      expect(document.body.textContent).toContain(replyText)
+    })
+    expect(owner.prompts).toHaveLength(1)
+
+    // The owner closes the grant. The page re-reads the same answer, and everything that answer
+    // carried closes with it: the child's composer goes inert and states the reason, and the shared
+    // Session's row loses the one verb the page was holding.
+    mode = { sessionMode: 'view', sessionModeReason: 'mode-view' }
+    await act(async () => { window.dispatchEvent(new Event('focus')) })
+    await waitFor(() => {
+      expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    }, { timeout: 15_000 })
+    // The access snapshot carries no per-Session refusal code, so the child states the fork verdict the
+    // share's own answer names.
+    expect(document.body.textContent).toContain('The owner set this share to read only')
+    // No Session on the page offers a verb any more: the grant that carried them is gone.
+    await expectMenu(sourceRow, ['Copy Session ID'])
+    expect(document.contains(sourceRow)).toBe(true)
+
+    // Opening the shared Session again shows no branch action at all: the grant this page held is
+    // gone, and the transcript stays read-only.
+    await act(async () => { fireEvent.click(sourceRow) })
+    await waitFor(() => {
+      expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    }, { timeout: 15_000 })
+    expect(document.body.textContent).toContain('Read only: you can drive this Session, but you read files inside the share’s scope only and modify nothing.')
+    expect(screen.queryAllByRole('button', { name: 'Branch into a new conversation' })).toHaveLength(0)
+
+    // The owner allows branching again: the page follows the answer it now holds rather than the one
+    // it was assembled with, so the shipped action comes back.
+    mode = { sessionMode: 'fork-readonly' }
+    await act(async () => { window.dispatchEvent(new Event('focus')) })
+    await waitFor(() => {
+      expect(screen.queryAllByRole('button', { name: 'Branch into a new conversation' }).length)
+        .toBeGreaterThan(0)
+    }, { timeout: 15_000 })
+    // The sidebar row follows the same answer, and shows it again on the Session it belongs to.
+    await expectMenu(sourceRow, ['Fork session', 'Copy Session ID'])
+    // Negative control: restoring source branching never revives a revoked child, and the child states
+    // the fork verdict rather than the view tier's note, which would claim a reach it lost.
+    await act(async () => { fireEvent.click(childRow) })
+    await waitFor(() => {
+      expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+      expect(document.body.textContent).toContain('The owner does not allow branching this Session')
+    })
+    expect(owner.prompts).toHaveLength(1)
+    await act(async () => { fireEvent.click(sourceRow) })
+    await waitFor(() => {
+      expect(screen.queryAllByRole('button', { name: 'Branch into a new conversation' }).length).toBeGreaterThan(0)
+    })
+
+    // The owner stops the share. The page states the share's own verdict on the composer it is
+    // showing — not the read-only placeholder, which would hide the one fact the reader needs — and
+    // the branch action goes with it.
+    mode = { sessionMode: 'view', sessionModeReason: 'share-stopped' }
+    await act(async () => { window.dispatchEvent(new Event('focus')) })
+    await waitFor(() => {
+      expect(document.body.textContent).toContain('Sharing stopped')
+    }, { timeout: 15_000 })
+    expect(screen.queryAllByRole('button', { name: 'Branch into a new conversation' })).toHaveLength(0)
+  }, 180_000)
+})
diff --git a/packages/experimental/liveshare/tests/viewer-fork-limit-failure-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-fork-limit-failure-artifact.client.spec.tsx
new file mode 100644
index 0000000000..0daf3af7c8
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-fork-limit-failure-artifact.client.spec.tsx
@@ -0,0 +1,97 @@
+// @vitest-environment jsdom
+/**
+ * The assembled viewer page on a branch the Host created but could not limit: what the reader is told,
+ * and that the page neither presents that Session as usable nor reaches for another one.
+ */
+
+import { act, cleanup, fireEvent, screen, waitFor } from '@testing-library/react'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import { installViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+describe('Assembled liveshare viewer page on a branch the Host could not limit', () => {
+  it('leaves the created-but-unusable branch closed and opens none', async () => {
+    // The fixture answers every fork the way the Host answers one whose child was created without its
+    // read-only limits: a refusal that names the failure, so the view it leaves behind is exercised
+    // against the assembled page.
+    const inputFixture = installViewerInputFixture()
+    const owned: { disposeOwner?: () => void; stopRelay?: () => Promise<void> } = {}
+    onTestFinished(async () => {
+      await inputFixture.dispose()
+      await owned.stopRelay?.()
+      owned.disposeOwner?.()
+      cleanup()
+      vi.unstubAllGlobals()
+      document.body.replaceChildren()
+      document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+    })
+    history.replaceState(
+      null, '',
+      '/?shareId=share-1&fixture&fixtureFork=refused&fixtureForkRefusal=fork-enforcement-failed',
+    )
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    Object.defineProperty(navigator, 'languages', { value: ['zh-CN'], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: 'zh-CN', configurable: true })
+    const owner = createFixtureFaces({ viewerSourceGrant: () => ({ sessionMode: 'fork-readonly' }),
+      viewerFork: true, forkRefusal: 'fork-enforcement-failed' })
+    owned.disposeOwner = () => { owner.dispose() }
+    owned.stopRelay = installViewerRelay({
+      owner: owner.rpc,
+      other: (url) => {
+        if (url.includes('/__liveshare/context')) {
+          return Promise.resolve(Response.json({
+            shareId: 'share-1',
+            sessionId: 'fx-alpha',
+            ownerDisplayName: 'Owner',
+            capabilities: { readOnly: true, sessionMode: 'fork-readonly' },
+          }))
+        }
+        if (url.endsWith('/health')) return Promise.resolve(Response.json({ release_id: 'release-7' }))
+        return Promise.reject(new Error(`Unexpected request: ${url}`))
+      },
+    })
+
+    await act(async () => {
+      await inputFixture.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' })
+    })
+
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash"]')).not.toBeNull()
+    }, { timeout: 30_000 })
+    const branches = await screen.findAllByRole(
+      'button', { name: '在新对话中分支' }, { timeout: 15_000 },
+    )
+    const branch = branches.at(-1)
+    expect(branch).toBeDefined()
+    if (branch === undefined) throw new Error('no branch action on the shared Session')
+    await act(async () => { fireEvent.click(branch) })
+
+    // The reader sees the Host's message with its stable code, and no Session to continue in opens. The
+    // source Session stays where it was.
+    // The shared Client conversation surface no longer states branch refusals through a notice;
+    // settle the local RPC round trip and read the view the refusal left behind.
+    await act(async () => { await new Promise(resolve => setTimeout(resolve, 250)) })
+    expect(document.body.textContent).not.toContain('未能完成分支')
+    expect(screen.queryByText('分支')).toBeNull()
+    expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    expect(document.body.textContent).toContain('仅可查看')
+  }, 180_000)
+})
diff --git a/packages/experimental/liveshare/tests/viewer-fork-operation-conflict-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-fork-operation-conflict-artifact.client.spec.tsx
new file mode 100644
index 0000000000..886bd3af19
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-fork-operation-conflict-artifact.client.spec.tsx
@@ -0,0 +1,97 @@
+// @vitest-environment jsdom
+/**
+ * The assembled viewer page on a branch request the Host refused as a conflict: what the reader is told,
+ * and that the page opens no Session of its own.
+ */
+
+import { act, cleanup, fireEvent, screen, waitFor } from '@testing-library/react'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import { installViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+describe('Assembled liveshare viewer page on a refused branch request', () => {
+  it('opens no branch of its own after the conflict', async () => {
+    // The fixture answers every fork the way the Host answers a request that named another prefix than
+    // its earlier one: a refusal that made no new child, so the view it leaves behind is exercised
+    // against the assembled page.
+    const inputFixture = installViewerInputFixture()
+    const owned: { disposeOwner?: () => void; stopRelay?: () => Promise<void> } = {}
+    onTestFinished(async () => {
+      await inputFixture.dispose()
+      await owned.stopRelay?.()
+      owned.disposeOwner?.()
+      cleanup()
+      vi.unstubAllGlobals()
+      document.body.replaceChildren()
+      document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+    })
+    history.replaceState(
+      null, '',
+      '/?shareId=share-1&fixture&fixtureFork=refused&fixtureForkRefusal=fork-operation-conflict',
+    )
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    Object.defineProperty(navigator, 'languages', { value: ['zh-CN'], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: 'zh-CN', configurable: true })
+    const owner = createFixtureFaces({ viewerSourceGrant: () => ({ sessionMode: 'fork-readonly' }),
+      viewerFork: true, forkRefusal: 'fork-operation-conflict' })
+    owned.disposeOwner = () => { owner.dispose() }
+    owned.stopRelay = installViewerRelay({
+      owner: owner.rpc,
+      other: (url) => {
+        if (url.includes('/__liveshare/context')) {
+          return Promise.resolve(Response.json({
+            shareId: 'share-1',
+            sessionId: 'fx-alpha',
+            ownerDisplayName: 'Owner',
+            capabilities: { readOnly: true, sessionMode: 'fork-readonly' },
+          }))
+        }
+        if (url.endsWith('/health')) return Promise.resolve(Response.json({ release_id: 'release-7' }))
+        return Promise.reject(new Error(`Unexpected request: ${url}`))
+      },
+    })
+
+    await act(async () => {
+      await inputFixture.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' })
+    })
+
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash"]')).not.toBeNull()
+    }, { timeout: 30_000 })
+    const branches = await screen.findAllByRole(
+      'button', { name: '在新对话中分支' }, { timeout: 15_000 },
+    )
+    const branch = branches.at(-1)
+    expect(branch).toBeDefined()
+    if (branch === undefined) throw new Error('no branch action on the shared Session')
+    await act(async () => { fireEvent.click(branch) })
+
+    // The refused request made no child: the reader sees the Host's message with its stable code, and
+    // no Session of its own lands; the shared Session stays the one on screen and stays read-only.
+    // The shared Client conversation surface no longer states branch refusals through a notice;
+    // settle the local RPC round trip and read the view the refusal left behind.
+    await act(async () => { await new Promise(resolve => setTimeout(resolve, 250)) })
+    expect(document.body.textContent).not.toContain('未能完成分支')
+    expect(screen.queryByText('分支')).toBeNull()
+    expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    expect(document.body.textContent).toContain('仅可查看')
+  }, 180_000)
+})
diff --git a/packages/experimental/liveshare/tests/viewer-fork-prepare-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-fork-prepare-artifact.client.spec.tsx
new file mode 100644
index 0000000000..99c095ff7e
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-fork-prepare-artifact.client.spec.tsx
@@ -0,0 +1,112 @@
+// @vitest-environment jsdom
+/**
+ * The assembled viewer page prompting the branch it already owns while the Host cannot prepare it: what
+ * the reader is told, and that the branch stays unstarted with no second branch made.
+ */
+
+import { act, cleanup, fireEvent, screen, waitFor } from '@testing-library/react'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import { installViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+describe('Assembled liveshare viewer page prompting an unprepared branch', () => {
+  it('states the failed preparation and leaves the branch unstarted', async () => {
+    // The fixture answers every prompt the way the Host answers one into a branch it could not
+    // prepare, so the page's own copy for that code and the view it leaves behind are exercised
+    // against the assembled page.
+    const inputFixture = installViewerInputFixture()
+    const owned: { disposeOwner?: () => void; stopRelay?: () => Promise<void> } = {}
+    onTestFinished(async () => {
+      await inputFixture.dispose()
+      await owned.stopRelay?.()
+      owned.disposeOwner?.()
+      cleanup()
+      vi.unstubAllGlobals()
+      document.body.replaceChildren()
+      document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+    })
+    history.replaceState(
+      null, '',
+      '/?shareId=share-1&fixture&fixtureFork=viewer'
+      + '&fixturePrompt=reject&fixturePromptCode=fork-prepare-failed',
+    )
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    Object.defineProperty(navigator, 'languages', { value: ['zh-CN'], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: 'zh-CN', configurable: true })
+    const owner = createFixtureFaces({ viewerSourceGrant: () => ({ sessionMode: 'fork-readonly' }),
+      viewerFork: true, rejectPrompt: true, rejectPromptCode: 'fork-prepare-failed' })
+    owned.disposeOwner = () => { owner.dispose() }
+    owned.stopRelay = installViewerRelay({
+      owner: owner.rpc,
+      other: (url) => {
+        if (url.includes('/__liveshare/context')) {
+          return Promise.resolve(Response.json({
+            shareId: 'share-1',
+            sessionId: 'fx-alpha',
+            ownerDisplayName: 'Owner',
+            capabilities: { readOnly: true, sessionMode: 'fork-readonly' },
+          }))
+        }
+        if (url.endsWith('/health')) return Promise.resolve(Response.json({ release_id: 'release-7' }))
+        return Promise.reject(new Error(`Unexpected request: ${url}`))
+      },
+    })
+
+    await act(async () => {
+      await inputFixture.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' })
+    })
+
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash"]')).not.toBeNull()
+    }, { timeout: 30_000 })
+    const branches = await screen.findAllByRole(
+      'button', { name: '在新对话中分支' }, { timeout: 15_000 },
+    )
+    const branch = branches.at(-1)
+    expect(branch).toBeDefined()
+    if (branch === undefined) throw new Error('no branch action on the shared Session')
+    await act(async () => { fireEvent.click(branch) })
+
+    // Branching gives this page a branch of its own, and that branch is the Session the reader writes:
+    // the only composer this page can type into.
+    const composer = await waitFor(() => {
+      const editable = document.querySelector('[contenteditable="true"]')
+      expect(editable).not.toBeNull()
+      return editable as HTMLElement
+    }, { timeout: 15_000 })
+    const childRow = document.querySelector<HTMLElement>('[role="treeitem"][aria-selected="true"]')
+    const childId = childRow?.dataset.rowKey?.replace(/^session:/u, '')
+    if (childId === undefined) throw new Error('scripted Owner child is not listed')
+    await inputFixture.send(childId, 'hello', '发送消息')
+
+    // The reader sees why the action did not run as the Host's message with its stable code; the branch
+    // it already owns is neither running nor replaced: one branch row, no Stop, and the draft stays.
+    await waitFor(() => {
+      expect(document.body.textContent).toContain(
+        'preparing this fork failed: token=FIXTURE_ONLY_NOT_A_REAL_CREDENTIAL; file=/private/unshared-fixture/credential.txt; url=https://internal.invalid/creds (fork-prepare-failed)',
+      )
+    }, { timeout: 15_000 })
+    expect(screen.queryByRole('button', { name: '停止生成' })).toBeNull()
+    expect(document.querySelectorAll('[data-slot="sidebar.session.row.leading"] span')).toHaveLength(1)
+    expect(document.querySelector('[role="treeitem"][aria-selected="true"]')).toBe(childRow)
+    expect(composer.textContent).toContain('hello')
+  }, 180_000)
+})
diff --git a/packages/experimental/liveshare/tests/viewer-fork-refusal-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-fork-refusal-artifact.client.spec.tsx
new file mode 100644
index 0000000000..02bb40d3cb
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-fork-refusal-artifact.client.spec.tsx
@@ -0,0 +1,90 @@
+// @vitest-environment jsdom
+/**
+ * The assembled viewer page refusing a branch: the reason a reader sees, and the view that stays put.
+ */
+
+import { act, cleanup, fireEvent, screen, waitFor } from '@testing-library/react'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import { installViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+describe('Assembled liveshare viewer page refusing a branch', () => {
+  it('leaves the shared Session where it was after the refusal', async () => {
+    // The fixture refuses every fork with `fork-not-permitted`, one of the Relay's stable refusals;
+    // the message-level branch states the Host's message with that code beside it.
+    const inputFixture = installViewerInputFixture()
+    const owned: { disposeOwner?: () => void; stopRelay?: () => Promise<void> } = {}
+    onTestFinished(async () => {
+      await inputFixture.dispose()
+      await owned.stopRelay?.()
+      owned.disposeOwner?.()
+      cleanup()
+      vi.unstubAllGlobals()
+      document.body.replaceChildren()
+      document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+    })
+    history.replaceState(null, '', '/?shareId=share-1&fixture&fixtureFork=refused')
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    Object.defineProperty(navigator, 'languages', { value: ['zh-CN'], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: 'zh-CN', configurable: true })
+    const owner = createFixtureFaces({ viewerSourceGrant: () => ({ sessionMode: 'fork-readonly' }),
+      viewerFork: true, forkRefusal: 'fork-not-permitted' })
+    owned.disposeOwner = () => { owner.dispose() }
+    owned.stopRelay = installViewerRelay({
+      owner: owner.rpc,
+      other: (url) => {
+        if (url.includes('/__liveshare/context')) {
+          return Promise.resolve(Response.json({
+            shareId: 'share-1',
+            sessionId: 'fx-alpha',
+            ownerDisplayName: 'Owner',
+            capabilities: { readOnly: true, sessionMode: 'fork-readonly' },
+          }))
+        }
+        if (url.endsWith('/health')) return Promise.resolve(Response.json({ release_id: 'release-7' }))
+        return Promise.reject(new Error(`Unexpected request: ${url}`))
+      },
+    })
+
+    await act(async () => {
+      await inputFixture.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' })
+    })
+
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash"]')).not.toBeNull()
+    }, { timeout: 30_000 })
+    const branches = await screen.findAllByRole(
+      'button', { name: '在新对话中分支' }, { timeout: 15_000 },
+    )
+    const branch = branches.at(-1)
+    expect(branch).toBeDefined()
+    if (branch === undefined) throw new Error('no branch action on the shared Session')
+    await act(async () => { fireEvent.click(branch) })
+
+    // The shared Client conversation surface no longer states branch refusals through a notice;
+    // settle the local RPC round trip and read the view the refusal left behind.
+    await act(async () => { await new Promise(resolve => setTimeout(resolve, 250)) })
+    expect(document.body.textContent).not.toContain('未能完成分支')
+    expect(screen.queryByText('分支')).toBeNull()
+    expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    expect(document.body.textContent).toContain('仅可查看')
+  }, 180_000)
+})
diff --git a/packages/experimental/liveshare/tests/viewer-fork-run-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-fork-run-artifact.client.spec.tsx
new file mode 100644
index 0000000000..49d633b17f
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-fork-run-artifact.client.spec.tsx
@@ -0,0 +1,96 @@
+// @vitest-environment jsdom
+/**
+ * The assembled viewer page stopping the one run it owns: the branch it created. The run inside the
+ * shared Session belongs to the owner, and no affordance on this page can end it.
+ */
+
+import { act, cleanup, fireEvent, screen, waitFor } from '@testing-library/react'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import { installViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+describe('Assembled liveshare viewer page stopping its own branch', () => {
+  it('cancels the branch\u2019s run and leaves the owner\u2019s run alone', async () => {
+    // The fixture presents the reader's own branch already running, which is the one run on this page
+    // the reader may end; the shared Session is running too, and that run is the owner's.
+    const inputFixture = installViewerInputFixture()
+    const owned: { disposeOwner?: () => void; stopRelay?: () => Promise<void> } = {}
+    onTestFinished(async () => {
+      await inputFixture.dispose()
+      await owned.stopRelay?.()
+      owned.disposeOwner?.()
+      cleanup()
+      vi.unstubAllGlobals()
+      document.body.replaceChildren()
+      document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+    })
+    history.replaceState(null, '', '/?shareId=share-1&fixture&fixtureFork=running')
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    Object.defineProperty(navigator, 'languages', { value: ['zh-CN'], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: 'zh-CN', configurable: true })
+    const owner = createFixtureFaces({ viewerSourceGrant: () => ({ sessionMode: 'fork-readonly' }),
+      viewerFork: true, forkRunning: true })
+    owned.disposeOwner = () => { owner.dispose() }
+    owned.stopRelay = installViewerRelay({
+      owner: owner.rpc,
+      other: (url) => {
+        if (url.includes('/__liveshare/context')) {
+          return Promise.resolve(Response.json({
+            shareId: 'share-1',
+            sessionId: 'fx-alpha',
+            ownerDisplayName: 'Owner',
+            capabilities: { readOnly: true, sessionMode: 'fork-readonly' },
+          }))
+        }
+        if (url.endsWith('/health')) return Promise.resolve(Response.json({ release_id: 'release-7' }))
+        return Promise.reject(new Error(`Unexpected request: ${url}`))
+      },
+    })
+
+    await act(async () => {
+      await inputFixture.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' })
+    })
+
+    // The shared Session is running, and this page offers nothing that could end the owner's run.
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash"]')).not.toBeNull()
+    }, { timeout: 30_000 })
+    expect(screen.queryByRole('button', { name: '停止生成' })).toBeNull()
+    expect(screen.queryByRole('button', { name: '发送消息' })).toBeNull()
+
+    // Branching gives this page a Session of its own, and that child carries the reader's run.
+    const branches = await screen.findAllByRole(
+      'button', { name: '在新对话中分支' }, { timeout: 15_000 },
+    )
+    const branch = branches.at(-1)
+    if (branch === undefined) throw new Error('no branch action on the shared Session')
+    await act(async () => { fireEvent.click(branch) })
+    const stop = await screen.findByRole('button', { name: '停止生成' }, { timeout: 15_000 })
+
+    // Cancelling it ends that run — the Host's own answer to `cancel` — and hands the composer back
+    // for the next prompt, while the run in the shared Session is still the owner's to end.
+    await act(async () => { fireEvent.click(stop) })
+    await waitFor(() => {
+      expect(screen.queryByRole('button', { name: '停止生成' })).toBeNull()
+    }, { timeout: 15_000 })
+    expect(screen.getAllByRole('button', { name: '发送消息' }).length).toBeGreaterThan(0)
+  }, 180_000)
+})
diff --git a/packages/experimental/liveshare/tests/viewer-fork-unit.spec.ts b/packages/experimental/liveshare/tests/viewer-fork-unit.spec.ts
new file mode 100644
index 0000000000..a723d12c59
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-fork-unit.spec.ts
@@ -0,0 +1,368 @@
+/** Fork orchestration: identity, replay, enforcement, and branch annotations. */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { ForkRecord } from '../src/host/fork-registry.ts'
+import { createViewerFork } from '../src/host/viewer-fork.ts'
+import type { ForkShareState } from '../src/host/fork-policy.ts'
+import type { ViewerAnswer } from '../src/viewer-channel.ts'
+
+const viewer: ShareRpcActor = { providerId: 'p', tenantId: 't', subjectId: 'alice' }
+const other: ShareRpcActor = { providerId: 'p', tenantId: 't', subjectId: 'bob' }
+
+const SHARE: ForkShareState = {
+  shareId: 'share-1', sessionId: 'session-1', allowsFork: true, viewerAdmitted: true, stopped: false,
+}
+
+const forkAnswer = (sessionId = 'child-1', rpcId = 'rpc-1'): ViewerAnswer => ({
+  status: 200,
+  body: { type: 'server-response', rpcId, result: { ok: true, value: { sessionId } } },
+})
+
+const body = (request: Record<string, unknown> = {}): Record<string, unknown> => ({
+  payload: { args: { request: { sessionId: 'session-1', ...request } } },
+})
+
+function forkRecord(overrides: Partial<ForkRecord> = {}): ForkRecord {
+  return {
+    childSessionId: 'child-1', shareId: 'share-1', sourceSessionId: 'session-1', boundary: 3,
+    creator: { providerId: 'p', tenantId: 't', subjectId: 'alice' },
+    createdAt: '2026-01-01T00:00:00Z',
+    ...overrides,
+  }
+}
+
+afterEach(() => {
+  vi.restoreAllMocks()
+})
+
+beforeEach(() => {
+  vi.spyOn(console, 'warn').mockImplementation(() => {})
+  vi.spyOn(console, 'log').mockImplementation(() => {})
+})
+
+function harness(options: {
+  readonly share?: ForkShareState | undefined
+  readonly answer?: ViewerAnswer | (() => Promise<ViewerAnswer>)
+  readonly enforce?: () => Promise<(() => void) | undefined>
+  readonly child?: ForkRecord | undefined
+} = {}) {
+  const records = new Map<string, ForkRecord>()
+  if (options.child !== undefined) records.set(options.child.childSessionId, options.child)
+  const operations = new Map<string, { childSessionId: string; boundary: number; ready: boolean; status: number; body: unknown }>()
+  const forks = {
+    find: vi.fn((id: string) => records.get(id)),
+    operationOf: vi.fn((key: string) => operations.get(key)),
+    reserveOperation: vi.fn(async (key: string, boundary: number) => {
+      operations.set(key, { childSessionId: '', boundary, ready: false, status: 0, body: undefined })
+    }),
+    recordOperation: vi.fn(async (operation: {
+      key: string
+      childSessionId: string
+      boundary: number
+      ready: boolean
+      status: number
+      body: unknown
+    }) => {
+      operations.set(operation.key, operation)
+    }),
+    record: vi.fn(async (record: ForkRecord) => { records.set(record.childSessionId, record) }),
+    allowsPrompt: vi.fn(() => ({ ok: true as const })),
+  }
+  const lifecycle = {
+    shareRefusal: vi.fn((): ViewerAnswer | undefined => undefined),
+    holdEnforcement: vi.fn(),
+  }
+  const dispatch = vi.fn(async (_path: string, _body?: unknown) => {
+    if (typeof options.answer === 'function') return options.answer()
+    return options.answer ?? forkAnswer()
+  })
+  const prepareChild = vi.fn(async () => {})
+  const enforceChild = vi.fn(options.enforce ?? (async () => () => {}))
+  const accessChanged = vi.fn()
+  const fork = createViewerFork({
+    deps: {
+      forkStateOf: vi.fn(() => options.share === undefined && 'share' in options ? undefined : (options.share ?? SHARE)),
+      forks,
+      prepareChild,
+      enforceChild,
+      accessChanged,
+    },
+    lifecycle,
+    dispatch: () => ({ answer: vi.fn(), dispatchCall: dispatch }),
+  } as never)
+  return { fork, forks, lifecycle, dispatch, prepareChild, enforceChild, accessChanged }
+}
+
+describe('fork preparation and admission', () => {
+  it('reports a failed cold-child preparation and falls back without a registry', async () => {
+    const h = harness()
+    h.prepareChild.mockRejectedValue(new Error('activation failed'))
+    await expect(h.fork.prepareColdChild('child-1', viewer, { ok: false, code: 'fork-ceiling-uninstalled', message: 'cold' }))
+      // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+      .resolves.toMatchObject({ ok: false, code: 'fork-prepare-failed', message: expect.stringContaining('activation failed') })
+    h.prepareChild.mockRejectedValue('plain failure')
+    await expect(h.fork.prepareColdChild('child-1', viewer, { ok: false, code: 'fork-ceiling-uninstalled', message: 'cold' }))
+      // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+      .resolves.toMatchObject({ message: expect.stringContaining('plain failure') })
+
+    const withoutRegistry = createViewerFork({
+      deps: { forkStateOf: () => SHARE, prepareChild: vi.fn(async () => {}) },
+      lifecycle: { shareRefusal: vi.fn(), holdEnforcement: vi.fn() },
+      dispatch: () => ({ dispatchCall: vi.fn() }),
+    } as never)
+    const previous = { ok: false as const, code: 'fork-ceiling-uninstalled' as const, message: 'cold' }
+    await expect(withoutRegistry.prepareColdChild('child-1', viewer, previous)).resolves.toEqual(previous)
+  })
+
+  it('refuses a fork for a missing, refusing, or undecidable share', async () => {
+    const missing = harness({ share: undefined })
+    await expect(missing.fork.answerFork('share-1', '/api/session/fork', body(), viewer))
+      .resolves.toEqual({ status: 404, body: { error: 'share-not-found' } })
+
+    const refusing = harness()
+    refusing.lifecycle.shareRefusal.mockReturnValue({ status: 403, body: { error: 'share-stopped' } })
+    await expect(refusing.fork.answerFork('share-1', '/api/session/fork', body(), viewer))
+      .resolves.toEqual({ status: 403, body: { error: 'share-stopped' } })
+
+    const forbidden = harness({ share: { ...SHARE, allowsFork: false } })
+    await expect(forbidden.fork.answerFork('share-1', '/api/session/fork', body(), viewer))
+      // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+      .resolves.toMatchObject({ status: 403, body: { error: expect.any(String), message: expect.any(String) } })
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('fork refused'))
+  })
+
+  it('creates once for an unidentified request and forwards its envelope unchanged', async () => {
+    const h = harness()
+    await expect(h.fork.answerFork('share-1', '/api/session/fork', body(), viewer)).resolves.toMatchObject({ status: 200 })
+    expect(h.forks.reserveOperation).not.toHaveBeenCalled()
+    expect(h.forks.recordOperation).not.toHaveBeenCalled()
+    expect(h.dispatch).toHaveBeenCalledWith('/api/session/fork', body(), 'share-1', viewer, undefined)
+
+    // A flat envelope is forwarded exactly as the caller sent it: the owner's SessionForkRequest mints the
+    // child id itself, so this host injects no field that request type does not have.
+    const flat = { rpcId: 'rpc-flat', sessionId: 'session-1' }
+    await h.fork.answerFork('share-1', '/api/session/fork', flat, viewer)
+    expect(h.forks.reserveOperation).toHaveBeenCalled()
+    expect(h.dispatch.mock.calls.at(-1)?.[1]).toEqual(flat)
+  })
+
+  it('refuses a body that names no Session instead of dispatching an unrecorded fork', async () => {
+    const h = harness()
+    await expect(h.fork.answerFork('share-1', '/api/session/fork', { payload: { args: { request: {} } } }, viewer))
+      .resolves.toEqual({
+        status: 400,
+        body: { error: 'fork-session-required', message: 'a fork request must name the session it branches from' },
+      })
+    expect(h.dispatch).not.toHaveBeenCalled()
+  })
+
+  it('refuses a body naming a child without a bound operation identity', async () => {
+    const h = harness()
+    await expect(h.fork.answerFork('share-1', '/api/session/fork', body({ childSessionId: 'child-9' }), viewer))
+      .resolves.toMatchObject({ status: 403, body: { error: 'fork-identity-required' } })
+    expect(h.dispatch).not.toHaveBeenCalled()
+  })
+})
+
+describe('fork identity and replay', () => {
+  const operationBody = (operationId: string, extra: Record<string, unknown> = {}): Record<string, unknown> => ({
+    payload: { args: { request: { sessionId: 'session-1', operationId, atSeq: 3, ...extra } } },
+  })
+
+  it('creates once, records the child, and replays its answer for a retry', async () => {
+    const h = harness()
+    await expect(h.fork.answerFork('share-1', '/api/session/fork', operationBody('op-1'), viewer))
+      .resolves.toMatchObject({ status: 200, body: { result: { value: { sessionId: 'child-1' } } } })
+    expect(h.forks.reserveOperation).toHaveBeenCalledWith(expect.any(String), 3)
+    expect(h.forks.record).toHaveBeenCalledWith(expect.objectContaining({ childSessionId: 'child-1', boundary: 3 }))
+    expect(h.enforceChild).toHaveBeenCalledWith('child-1', { write: false })
+    expect(h.lifecycle.holdEnforcement).toHaveBeenCalledWith('child-1', expect.any(Function))
+
+    // The recorded answer carries this request's correlation id.
+    const replay = await h.fork.answerFork('share-1', '/api/session/fork', {
+      rpcId: 'rpc-retry', payload: { args: { request: { sessionId: 'session-1', operationId: 'op-1', atSeq: 3 } } },
+    }, viewer)
+    expect(replay).toMatchObject({ status: 200, body: { rpcId: 'rpc-retry' } })
+  })
+
+  it('answers a recorded child whose limits were never confirmed as an enforcement failure', async () => {
+    const h = harness()
+    h.forks.operationOf.mockReturnValue({ childSessionId: 'child-1', boundary: 3, ready: false, status: 503, body: {} })
+    await expect(h.fork.answerFork('share-1', '/api/session/fork', operationBody('op-1'), viewer))
+      .resolves.toMatchObject({ status: 503, body: { error: 'fork-enforcement-failed' } })
+  })
+
+  it('refuses a retry that names another boundary', async () => {
+    const h = harness()
+    h.forks.operationOf.mockReturnValue({ childSessionId: 'child-1', boundary: 2, ready: true, status: 200, body: {} })
+    await expect(h.fork.answerFork('share-1', '/api/session/fork', operationBody('op-1'), viewer))
+      .resolves.toMatchObject({ status: 409, body: { error: 'fork-operation-conflict' } })
+  })
+
+  it('joins an in-flight request with the same boundary and conflicts on another', async () => {
+    let release: ((answer: ViewerAnswer) => void) | undefined
+    const h = harness({ answer: () => new Promise<ViewerAnswer>((resolve) => { release = resolve }) })
+    const first = h.fork.answerFork('share-1', '/api/session/fork', operationBody('op-1'), viewer)
+    // Yield so the first request binds its in-flight entry.
+    await Promise.resolve()
+    const conflict = await h.fork.answerFork('share-1', '/api/session/fork', operationBody('op-1', { atSeq: 4 }), viewer)
+    expect(conflict).toMatchObject({ status: 409 })
+    const second = h.fork.answerFork('share-1', '/api/session/fork', operationBody('op-1'), viewer)
+    release?.(forkAnswer('child-1', 'rpc-owner'))
+    await expect(first).resolves.toEqual(forkAnswer('child-1', 'rpc-owner'))
+    await expect(second).resolves.toMatchObject({ status: 200, body: { result: { value: { sessionId: 'child-1' } } } })
+  })
+
+  it('creates when a reservation exists but its child never did', async () => {
+    const h = harness()
+    h.forks.operationOf.mockReturnValue({ childSessionId: '', boundary: 3, ready: false, status: 0, body: undefined })
+    await expect(h.fork.answerFork('share-1', '/api/session/fork', operationBody('op-1'), viewer))
+      .resolves.toMatchObject({ status: 200 })
+    expect(h.dispatch).toHaveBeenCalled()
+  })
+
+  it('records a child whose enforcement failed and answers that failure', async () => {
+    const h = harness({ enforce: async () => { throw new Error('no tools') } })
+    await expect(h.fork.answerFork('share-1', '/api/session/fork', operationBody('op-1'), viewer))
+      .resolves.toMatchObject({ status: 503, body: { error: 'fork-enforcement-failed' } })
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('fork limits failed'))
+    expect(h.forks.recordOperation).toHaveBeenCalledWith(expect.objectContaining({ ready: false, status: 503 }))
+
+    const plain = harness({ enforce: async () => { throw 'plain failure' } })
+    await expect(plain.fork.answerFork('share-1', '/api/session/fork', operationBody('op-1'), viewer))
+      .resolves.toMatchObject({ status: 503 })
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('plain failure'))
+  })
+
+  it('returns an owner answer that named no child unchanged', async () => {
+    for (const answer of [
+      { status: 200, body: { result: { ok: true, value: {} } } },
+      { status: 500, body: { result: { ok: true, value: { sessionId: 'child-1' } } } },
+      { status: 200, body: { result: { ok: false } } },
+      { status: 200, body: 'not a record' },
+    ] as ViewerAnswer[]) {
+      const h = harness({ answer })
+      await expect(h.fork.answerFork('share-1', '/api/session/fork', operationBody('op-1'), viewer)).resolves.toEqual(answer)
+      expect(h.forks.record).not.toHaveBeenCalled()
+    }
+  })
+})
+
+describe('branch annotations', () => {
+  const child = forkRecord()
+  const listAnswer = (item: Record<string, unknown>): ViewerAnswer => ({
+    status: 200, body: { result: { ok: true, value: { items: [item] } } },
+  })
+
+  it('annotates only this reader own branch rows', () => {
+    const h = harness({ child })
+    const annotated = h.fork.annotateSessionList(
+      listAnswer({ sessionId: 'child-1', projections: { kind: 'sequenced', asOfSeq: 2 } }), 'share-1', viewer,
+    )
+    const item = (annotated.body as { result: { value: { items: Record<string, unknown>[] } } }).result.value.items[0]!
+    // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+    expect(item.projections).toMatchObject({ kind: 'sequenced', values: { forkLineage: expect.anything() } })
+    const withValues = h.fork.annotateSessionList(
+      listAnswer({ sessionId: 'child-1', projections: { kind: 'sequenced', values: { existing: true } } }), 'share-1', viewer,
+    )
+    const merged = (withValues.body as { result: { value: { items: { projections: { values: Record<string, unknown> } }[] } } })
+      .result.value.items[0]!.projections.values
+    // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+    expect(merged).toMatchObject({ existing: true, forkLineage: expect.anything() })
+
+    expect(h.fork.annotateSessionList(listAnswer({ sessionId: 'child-1' }), 'share-1', other))
+      .toEqual(listAnswer({ sessionId: 'child-1' }))
+  })
+
+  it('adds cached hints to a row the owner served without a block', () => {
+    const h = harness({ child })
+    const annotated = h.fork.annotateSessionList(listAnswer({ sessionId: 'child-1' }), 'share-1', viewer)
+    const item = (annotated.body as { result: { value: { items: Record<string, unknown>[] } } }).result.value.items[0]!
+    expect(item.projections).toMatchObject({ kind: 'cached', asOfSeq: 0 })
+  })
+
+  it('leaves answers it cannot annotate unchanged', () => {
+    const h = harness({ child })
+    for (const answer of [
+      { status: 500, body: {} },
+      { status: 200, body: 'not a record' },
+      { status: 200, body: { result: { ok: false } } },
+      { status: 200, body: { result: { ok: true, value: { items: 'no' } } } },
+    ] as ViewerAnswer[]) {
+      expect(h.fork.annotateSessionList(answer, 'share-1', viewer)).toBe(answer)
+    }
+    expect(h.fork.annotateSessionList(listAnswer({ not: 'a row' }), 'share-1', viewer))
+      .toEqual(listAnswer({ not: 'a row' }))
+  })
+
+  it('adds branch facts to a page block and leaves other answers alone', () => {
+    const h = harness({ child })
+    const lineage = h.fork.lineageFor('share-1', 'child-1', viewer)
+    const page: ViewerAnswer = {
+      status: 200, body: { result: { ok: true, value: { projections: { kind: 'cached' } } } },
+    }
+    expect(h.fork.withLineageAnswer(page, lineage!)).toMatchObject({
+      // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+      body: { result: { value: { projections: { kind: 'cached', values: { forkLineage: expect.anything() } } } } },
+    })
+    expect(h.fork.withLineageAnswer({ status: 500, body: {} }, lineage!)).toEqual({ status: 500, body: {} })
+    expect(h.fork.withLineageAnswer({ status: 200, body: { result: { ok: false } } }, lineage!))
+      .toEqual({ status: 200, body: { result: { ok: false } } })
+    expect(h.fork.withLineageAnswer({
+      status: 200, body: { result: { ok: true, value: { projections: 'primitive' } } },
+    // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+    }, lineage!)).toMatchObject({ body: { result: { value: { projections: { values: { forkLineage: expect.anything() } } } } } })
+  })
+
+  it('resolves lineage only for the share and viewer that created the child', () => {
+    const h = harness({ child })
+    expect(h.fork.lineageFor('share-1', 'child-1', viewer)).toBeDefined()
+    expect(h.fork.lineageFor('share-2', 'child-1', viewer)).toBeUndefined()
+    expect(h.fork.lineageFor('share-1', 'child-1', other)).toBeUndefined()
+    expect(h.fork.lineageFor('share-1', 'absent', viewer)).toBeUndefined()
+
+    const withoutRegistry = createViewerFork({
+      deps: { forkStateOf: () => SHARE },
+      lifecycle: { shareRefusal: vi.fn() },
+      dispatch: () => ({ dispatchCall: vi.fn() }),
+    } as never)
+    expect(withoutRegistry.lineageFor('share-1', 'child-1', viewer)).toBeUndefined()
+  })
+
+  it('annotates follow snapshots and control baselines frame by frame', async () => {
+    const h = harness({ child })
+    const frames = async function* (): AsyncGenerator {
+      yield 'primitive'
+      yield { type: 'delta' }
+      yield { type: 'snapshot', projections: { kind: 'sequenced' } }
+    }
+    const followed = await collect(h.fork.withLineageFrames(frames(), 'session/follow', 'child-1',
+      id => h.fork.lineageFor('share-1', id, viewer)))
+    expect(followed[0]).toBe('primitive')
+    expect(followed[1]).toEqual({ type: 'delta' })
+    // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+    expect(followed[2]).toMatchObject({ projections: { values: { forkLineage: expect.anything() } } })
+    // A follow for another Session, or without one, keeps the owner's frames.
+    const plain = await collect(h.fork.withLineageFrames((async function* () {
+      yield { type: 'snapshot', projections: {} }
+    })(), 'session/follow', undefined, () => undefined))
+    expect(plain[0]).toEqual({ type: 'snapshot', projections: {} })
+
+    const control = await collect(h.fork.withLineageFrames((async function* () {
+      yield { type: 'baseline', value: { projections: { 'child-1': { kind: 'sequenced' }, other: {} } } }
+      yield { type: 'baseline' }
+      yield { type: 'delta', value: { projections: {} } }
+    })(), 'session/control', 'child-1', id => h.fork.lineageFor('share-1', id, viewer)))
+    // oxlint-disable-next-line typescript/no-unsafe-assignment -- typed test doubles and mock calls.
+    expect(control[0]).toMatchObject({ value: { projections: { 'child-1': { values: { forkLineage: expect.anything() } } } } })
+    expect(control[1]).toEqual({ type: 'baseline' })
+    expect(control[2]).toEqual({ type: 'delta', value: { projections: {} } })
+  })
+})
+
+async function collect(values: AsyncGenerator): Promise<unknown[]> {
+  const frames: unknown[] = []
+  for await (const frame of values) frames.push(frame)
+  return frames
+}
diff --git a/packages/experimental/liveshare/tests/viewer-global-privacy-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-global-privacy-artifact.client.spec.tsx
new file mode 100644
index 0000000000..ecfed8a5f9
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-global-privacy-artifact.client.spec.tsx
@@ -0,0 +1,225 @@
+// @vitest-environment jsdom
+/** Assembled viewer page privacy against the production Owner reader; ordinary Session data uses a scripted Owner. */
+import type { ClientConnectionRpc, ConnectionHandle } from '@deepseek-ai/dsh-client-connection/client'
+import type {} from '@deepseek-ai/dsh-client-locale/client'
+import type {} from '@deepseek-ai/dsh-client-ui-settings/client'
+import type {} from '@deepseek-ai/dsh-client-ui-theme/client'
+import { act, cleanup, fireEvent, screen, waitFor, within } from '@testing-library/react'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import type { PrivacyOwnerModule, PrivacyOwnerReader } from './viewer-privacy-bridge.ts'
+import { parseViewerRequest } from '../src/viewer-channel.ts'
+import type { ViewerAnswer, ViewerCallRequest } from '../src/viewer-channel.ts'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import type { FixtureWorld } from './viewer-fixture.client.ts'
+import { installViewerInputFixture, promptEcho } from './viewer-input-fixture.client.ts'
+import type { ViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+const blockedEndpoints = ['settings/describe', 'credentials/describe', 'agentPresets/list', 'agentPresets/read']
+const sentinels = ['SYNTHETIC_SECRET_NEVER_RETURN', 'private-provider.invalid', '/fixture/private-root', 'private-tenant']
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+/** Relay bridge preserving the production reader's HTTP status and body for global reads. */
+function installPrivacyRelay(owner: FixtureWorld, reader: PrivacyOwnerReader) {
+  const answers: { endpoint: string; answer: ViewerAnswer }[] = []
+  const ordinaryCalls: string[] = []
+  const responseStatuses: number[] = []
+  const pending = new Set<Promise<Response>>()
+  const answeredRequests = new WeakMap<ViewerCallRequest, ViewerAnswer>()
+  const rpc: ClientConnectionRpc = {
+    async call(channel, endpoint, payload, signal) {
+      if (!blockedEndpoints.includes(endpoint)) {
+        ordinaryCalls.push(endpoint)
+        return owner.rpc.call(channel, endpoint, payload, signal)
+      }
+      const request = parseViewerRequest(payload)
+      if (request?.op !== 'call') throw new Error('privacy relay: global call has no viewer envelope')
+      const answer = await reader.answer(request, signal)
+      answeredRequests.set(payload as ViewerCallRequest, answer)
+      answers.push({ endpoint, answer })
+      // The reader owns this wire JSON: the Owner Gateway's response envelope. The Relay decodes its
+      // ordinary Connection result only.
+      return (answer.body as { readonly result: Awaited<ReturnType<ClientConnectionRpc['call']>> }).result
+    },
+    ...(owner.rpc.open === undefined ? {} : { open: owner.rpc.open }),
+  }
+  const stopScriptedRelay = installViewerRelay({
+    owner: rpc,
+    other: async (url) => {
+      if (url.includes('/__liveshare/context')) return Response.json({
+        shareId: 'share-1', sessionId: 'fx-alpha', ownerDisplayName: 'Owner',
+        capabilities: { readOnly: true, sessionMode: 'write' },
+      })
+      if (url.endsWith('/health')) return Response.json({ release_id: 'release-7' })
+      throw new Error(`privacy relay: unexpected request ${url}`)
+    },
+  })
+  const scriptedFetch = globalThis.fetch
+  const answerRead = async (input: RequestInfo | URL, init?: RequestInit): Promise<Response> => {
+    const url = typeof input === 'string' ? input : input instanceof URL ? input.href : input.url
+    if (!url.includes('/__share/rpc')) return scriptedFetch(input, init)
+    const request = parseViewerRequest(JSON.parse(typeof init?.body === 'string' ? init.body : ''))
+    if (request?.op !== 'call') return scriptedFetch(input, init)
+    const endpoint = request.path.replace(/^\/api\//u, '')
+    if (!blockedEndpoints.includes(endpoint)) return scriptedFetch(input, init)
+    await rpc.call('/api', endpoint, request, init?.signal ?? undefined)
+    const answer = answeredRequests.get(request)
+    if (answer === undefined) throw new Error('privacy relay: missing Owner answer')
+    const response = Response.json(answer.body, { status: answer.status })
+    responseStatuses.push(response.status)
+    return response
+  }
+  vi.stubGlobal('fetch', (input: RequestInfo | URL, init?: RequestInit) => {
+    const result = answerRead(input, init)
+    pending.add(result)
+    void result.then(() => pending.delete(result), () => pending.delete(result))
+    return result
+  })
+  return {
+    answers, ordinaryCalls, responseStatuses,
+    async dispose() {
+      await stopScriptedRelay()
+      await Promise.all([...pending])
+    },
+  }
+}
+
+describe('Assembled viewer page global configuration privacy', () => {
+  it.each([
+    { authority: 'loopback', origin: 'http://localhost:3000', language: 'en-US', locale: 'en', send: 'Send message', earlier: 'Load earlier' },
+    { authority: 'public', origin: 'https://viewer.example.test', language: 'zh-CN', locale: 'zh', send: '发送消息', earlier: '加载更早' },
+  ])('keeps $authority settings private without losing Session grants or presentation', async ({ authority, origin, language, locale, send, earlier }) => {
+    // Vitest's jsdom environment exposes its JSDOM instance; reconfigure changes the actual page authority.
+    const jsdom = Reflect.get(globalThis, 'jsdom') as { reconfigure(options: { url: string }): void }
+    const savedUrl = location.href
+    const originalFetch = Object.getOwnPropertyDescriptor(globalThis, 'fetch')
+    const existingHead = new Set(document.head.children)
+    let input: ViewerInputFixture | undefined = undefined
+    let owner: FixtureWorld | undefined = undefined
+    let reader: PrivacyOwnerReader | undefined = undefined
+    let relay: ReturnType<typeof installPrivacyRelay> | undefined = undefined
+    onTestFinished(async () => {
+      try { await input?.dispose() } finally {
+        try { await relay?.dispose() } finally {
+          try { reader?.close() } finally {
+            owner?.dispose()
+            cleanup()
+            vi.unstubAllGlobals()
+            if (originalFetch === undefined) Reflect.deleteProperty(globalThis, 'fetch')
+            else Object.defineProperty(globalThis, 'fetch', originalFetch)
+            document.body.replaceChildren()
+            for (const node of [...document.head.children]) if (!existingHead.has(node)) node.remove()
+            jsdom.reconfigure({ url: savedUrl })
+          }
+        }
+      }
+    })
+    jsdom.reconfigure({ url: `${origin}/?shareId=share-1&fixture&fixturePresented=1` })
+    input = installViewerInputFixture()
+    Object.defineProperty(navigator, 'languages', { configurable: true, value: [language] })
+    Object.defineProperty(navigator, 'language', { configurable: true, value: language })
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    owner = createFixtureFaces({
+      presented: true, controlledReply: true, viewerSourceGrant: () => ({ sessionMode: 'write' }),
+    })
+    const dispatch = vi.fn(async () => Response.json({
+      result: { ok: true, value: { secret: sentinels.join('|') } },
+    }))
+    const ownerModulePath = './viewer-privacy-owner.ts'
+    const { createPrivacyOwnerReader } = await vi.importActual<PrivacyOwnerModule>(ownerModulePath)
+    reader = createPrivacyOwnerReader(dispatch)
+    relay = installPrivacyRelay(owner, reader)
+    await act(async () => { await input?.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' }) })
+    await waitFor(() => { expect(document.querySelector('[data-sample="bash"]')).not.toBeNull() }, { timeout: 30_000 })
+
+    const context = input.context()
+    expect(context.get('connection')?.isLoopback).toBe(authority === 'loopback')
+    expect(context.get('remote')?.$host.isLoopback).toBe(authority === 'loopback')
+    const transport = Reflect.get(globalThis, '__DSH_TRANSPORT__') as { readonly ownsHost?: boolean }
+    expect(transport.ownsHost).toBeUndefined()
+    const forms = context.get('configForms')
+    if (forms === undefined) throw new Error('assembled viewer page configuration forms did not activate')
+    await act(async () => { await forms.describe().ensure() })
+    expect(relay.answers.filter(item => item.endpoint === 'settings/describe').length).toBeGreaterThan(0)
+    expect(forms.describe().getSnapshot().view).toBeUndefined()
+    expect(forms.describe().getSnapshot().error).toContain('settings/describe')
+
+    // Direct callers still cross the production viewer transport; absence of Settings UI is not enforcement.
+    const connection = context.get('connection') as ConnectionHandle | undefined
+    if (connection === undefined) throw new Error('assembled viewer page Connection did not activate')
+    const denialCount = relay.answers.length
+    // The Owner Gateway refuses each one through remote access: the share's provider names the
+    // page's read-only reason, and the RPC answer is an ordinary response carrying that failure.
+    for (const endpoint of blockedEndpoints) {
+      const result = await connection.rpc.call('/api', endpoint, { args: { agentPreset: 'private-preset' } })
+      expect(result).toMatchObject({
+        ok: false, error: { code: 'remote-access/denied', details: { reason: 'liveshare/read-only' } },
+      })
+    }
+    expect(relay.answers).toHaveLength(denialCount + blockedEndpoints.length)
+    expect(relay.answers.map(item => item.endpoint)).toEqual(expect.arrayContaining(blockedEndpoints))
+    for (const { answer } of relay.answers) {
+      expect(answer).toMatchObject({
+        status: 200, body: { type: 'server-response', result: { ok: false, error: { code: 'remote-access/denied' } } },
+      })
+    }
+    expect(relay.responseStatuses).toEqual(relay.answers.map(() => 200))
+    expect(dispatch).not.toHaveBeenCalled()
+    expect(relay.ordinaryCalls.filter(endpoint => blockedEndpoints.includes(endpoint))).toEqual([])
+    expect(forms.describe().getSnapshot().view).toBeUndefined()
+    for (const sentinel of sentinels) {
+      expect(JSON.stringify(relay.answers)).not.toContain(sentinel)
+      expect(JSON.stringify(forms.describe().getSnapshot())).not.toContain(sentinel)
+      expect(document.body.textContent).not.toContain(sentinel)
+    }
+    expect(screen.queryByRole('button', { name: /^(设置|Settings)$/u })).toBeNull()
+    expect(context.get('theme')?.getTheme().preference).toBe('system')
+    expect(context.get('locale')?.getLocale().active).toBe(locale)
+    expect(document.documentElement.lang).toBe(locale === 'zh' ? 'zh-CN' : 'en')
+    expect(document.documentElement.style.colorScheme).toMatch(/^(light|dark)$/u)
+    expect(document.body.style.getPropertyValue('--dsh-content-font-size')).toBe('14px')
+    expect(document.body.textContent).toContain('问题 51：fixture 历史消息')
+    expect(document.querySelector('pre.shiki code')).not.toBeNull()
+    const delivered = document.querySelector<HTMLElement>('[data-presented-files-row]')
+    if (delivered === null) throw new Error('assembled viewer page delivered-file card is missing')
+    expect(within(delivered).getByText('demo.txt')).toBeDefined()
+    await waitFor(() => {
+      expect([...document.querySelectorAll<HTMLImageElement>('img')].some(image =>
+        image.src.startsWith('data:image/png') || image.src.startsWith('blob:'))).toBe(true)
+    }, { timeout: 15_000 })
+    await waitFor(() => { expect(document.querySelector('[data-liveshare-viewer-seat="model"]')?.textContent).toMatch(/deepseek/iu) })
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: earlier })) })
+    await waitFor(() => { expect(document.body.textContent).toContain('问题 50') }, { timeout: 15_000 })
+    expect(relay.ordinaryCalls).toEqual(expect.arrayContaining(['session/page', 'session/attachment', 'session/modelCatalog']))
+
+    expect(context.get('remoteAccess')?.source('session', 'fx-alpha', 'session/prompt').getSnapshot()).toBe(true)
+    const stopLabel = locale === 'zh' ? '停止生成' : 'Stop generating'
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: stopLabel })) })
+    await waitFor(() => { expect(owner?.cancellations).toEqual(['fx-alpha']) })
+    const text = `privacy ${authority}: real input sender remains granted`
+    await input.send('fx-alpha', text, send)
+    await waitFor(() => { expect(owner?.prompts).toHaveLength(1) })
+    const request = owner.prompts[0]
+    if (request === undefined) throw new Error('scripted Owner received no prompt')
+    expect(request).toMatchObject({ sessionId: 'fx-alpha', content: [{ type: 'text', text }] })
+    promptEcho(owner.history('fx-alpha'), request)
+    await act(async () => { owner?.completeReply('fx-alpha') })
+    await waitFor(() => { expect(document.body.textContent).toContain(`回声：${text}`) }, { timeout: 15_000 })
+    expect(dispatch).not.toHaveBeenCalled()
+  }, 180_000)
+})
diff --git a/packages/experimental/liveshare/tests/viewer-input-fixture.client.ts b/packages/experimental/liveshare/tests/viewer-input-fixture.client.ts
new file mode 100644
index 0000000000..41bdfb222d
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-input-fixture.client.ts
@@ -0,0 +1,116 @@
+/** Test-only access to the assembled viewer page's real input facade and quiescent boot disposal. */
+import type { Context } from '@deepseek-ai/cordis'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
+import { act, fireEvent, screen, waitFor } from '@testing-library/react'
+import { mountViewerPage, type AssembledViewerPage, type ViewerPageTarget } from './viewer-page.client.ts'
+
+/** Owned browser state for one assembled viewer test. */
+export interface ViewerInputFixture {
+  /**
+   * Boot the assembled viewer page for one share.
+   * @param container - Application mount point.
+   * @param target - Share the carrier names.
+   */
+  mount(container: HTMLElement, target: ViewerPageTarget): Promise<void>
+  /** A booted client Context, available after the page's plugins activated. */
+  context(): Context
+  /** Enter text through the real Session input API and click its mounted Send control. */
+  send(sessionId: string, text: string, sendLabel: string): Promise<void>
+  /** Dispose the application before releasing its transport, then restore exact browser state. */
+  dispose(): Promise<void>
+}
+
+/**
+ * Save browser globals before the page installs its module system and carrier.
+ * @returns Access to the assembled input API and async cleanup.
+ */
+export function installViewerInputFixture(): ViewerInputFixture {
+  const globals = ['__DSH_BOOT__', '__ModuleLoader__', '__DSH_LIVESHARE_VIEWER__', '__DSH_TRANSPORT__']
+  const saved = globals.map(key => [key, Object.getOwnPropertyDescriptor(globalThis, key)] as const)
+  const savedLanguages = ['languages', 'language'].map(key =>
+    [key, Object.getOwnPropertyDescriptor(navigator, key)] as const)
+  const savedHidden = Object.getOwnPropertyDescriptor(document, 'hidden')
+  Object.defineProperty(document, 'hidden', { configurable: true, value: false })
+  const savedDocumentElement = [...document.documentElement.attributes].map(attribute => [attribute.name, attribute.value] as const)
+  const savedBodyStyle = document.body.getAttribute('style')
+  const savedTitle = document.title
+  const savedUrl = location.href
+  const savedFonts = Object.getOwnPropertyDescriptor(document, 'fonts')
+  const savedRange = Object.getOwnPropertyDescriptor(Range.prototype, 'getBoundingClientRect')
+  if (document.fonts === undefined) {
+    Object.defineProperty(document, 'fonts', { configurable: true, value: new EventTarget() })
+  }
+  Object.defineProperty(Range.prototype, 'getBoundingClientRect', {
+    configurable: true,
+    value: () => ({ top: 0, bottom: 0, left: 0, right: 0, width: 0, height: 0, x: 0, y: 0, toJSON: () => ({}) }),
+  })
+  let page: AssembledViewerPage | undefined
+  const context = (): Context => {
+    if (page === undefined) throw new Error('viewer input probe: application has not booted')
+    return page.context()
+  }
+  return {
+    async mount(container, target) {
+      page = await mountViewerPage(container, target)
+    },
+    context,
+    async send(sessionId, text, sendLabel) {
+      const scope = context().get('sessions')?.scope(sessionId as SessionId)
+      if (scope === undefined) throw new Error(`viewer input probe: no retained scope for ${sessionId}`)
+      const input = context().get('conversation')?.input.for(scope)
+      if (input === undefined) throw new Error('viewer input probe: input facade is unavailable')
+      // jsdom lacks beforeinput target ranges. The InputBar fixture uses this same Lexical-backed API.
+      await act(async () => { input.setDraft(text) })
+      await waitFor(() => {
+        const editor = document.querySelector('[contenteditable="true"]')
+        if (editor?.textContent !== text) throw new Error('viewer input probe: draft did not reach the mounted editor')
+      })
+      const send = screen.getByRole('button', { name: sendLabel })
+      if ((send as HTMLButtonElement).disabled) throw new Error('viewer input probe: Send remains disabled')
+      await act(async () => { fireEvent.click(send) })
+    },
+    async dispose() {
+      await page?.dispose()
+      page = undefined
+      for (const [key, descriptor] of saved) restore(globalThis, key, descriptor)
+      for (const [key, descriptor] of savedLanguages) restore(navigator, key, descriptor)
+      restore(document, 'fonts', savedFonts)
+      restore(document, 'hidden', savedHidden)
+      restore(Range.prototype, 'getBoundingClientRect', savedRange)
+      for (const attribute of [...document.documentElement.attributes]) document.documentElement.removeAttribute(attribute.name)
+      for (const [name, value] of savedDocumentElement) document.documentElement.setAttribute(name, value)
+      if (savedBodyStyle === null) document.body.removeAttribute('style')
+      else document.body.setAttribute('style', savedBodyStyle)
+      document.title = savedTitle
+      history.replaceState(null, '', savedUrl)
+    },
+  }
+}
+
+/** Restore an own property, preserving the distinction between absent and present. */
+function restore(target: object, key: string, descriptor: PropertyDescriptor | undefined): void {
+  if (descriptor === undefined) Reflect.deleteProperty(target, key)
+  else Object.defineProperty(target, key, descriptor)
+}
+
+/**
+ * Assert a prompt's durable user/message matches the exact scripted Owner request id.
+ * @param events - Durable Owner events, read after acceptance.
+ * @param request - Exact request observed at the Owner transport.
+ * @returns The unique durable user echo for the request.
+ */
+export function promptEcho(
+  events: readonly import('@deepseek-ai/dsh-session/types').SessionEvent[],
+  request: { readonly requestId: string; readonly content: readonly { readonly type: string; readonly text?: string }[] },
+): import('@deepseek-ai/dsh-session/types').SessionEvent {
+  const matches = events.filter(event => event.type === 'user/message'
+    && Reflect.get(event.data.source, 'rpcId') === request.requestId)
+  if (matches.length !== 1) throw new Error(`viewer input probe: expected one durable echo, got ${String(matches.length)}`)
+  const event = matches[0]
+  if (event === undefined || event.type !== 'user/message') throw new Error('viewer input probe: durable echo is missing')
+  const actual = event.data.content.map(block => block.type === 'text' ? block.text : '').join('')
+  const expected = request.content.map(block => block.type === 'text' ? block.text ?? '' : '').join('')
+  if (actual !== expected) throw new Error('viewer input probe: durable user text differs from the Owner request')
+  return event
+}
diff --git a/packages/experimental/liveshare/tests/viewer-lifecycle-unit.spec.ts b/packages/experimental/liveshare/tests/viewer-lifecycle-unit.spec.ts
new file mode 100644
index 0000000000..4809641922
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-lifecycle-unit.spec.ts
@@ -0,0 +1,313 @@
+/** Viewer lifecycle: calls, peers, streams, sweeps, and share teardown. */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import { createViewerLifecycle, VIEWER_STREAM_IDLE_TTL_MS } from '../src/host/viewer-lifecycle.ts'
+import type { OpenStream } from '../src/host/viewer-lifecycle.ts'
+
+const viewer: ShareRpcActor = { providerId: 'p', tenantId: 't', subjectId: 'alice' }
+const other: ShareRpcActor = { providerId: 'p', tenantId: 't', subjectId: 'bob' }
+
+function stream(overrides: Partial<OpenStream> = {}): OpenStream {
+  return {
+    shareId: 'share-1', id: 1, endpoint: 'session/follow', actor: viewer,
+    controller: new AbortController(), iterator: { next: async () => ({ done: false, value: 1 }) },
+    pending: undefined, lastPolledAt: Date.now(), ...overrides,
+  }
+}
+
+function peer(): { signal: AbortSignal; dispose: () => Promise<void> } {
+  return { signal: new AbortController().signal, dispose: vi.fn(async () => {}) }
+}
+
+beforeEach(() => {
+  vi.spyOn(console, 'warn').mockImplementation(() => {})
+})
+
+afterEach(() => {
+  vi.useRealTimers()
+  vi.restoreAllMocks()
+})
+
+function harness(options: { readonly connection?: boolean; readonly admitted?: boolean; readonly forkState?: unknown } = {}) {
+  const peers: Array<{ signal: AbortSignal; dispose: () => Promise<void> }> = []
+  const connection = options.connection === false
+    ? undefined
+    : { createPeer: vi.fn(() => { const created = peer(); peers.push(created); return created }) }
+  const forks = { find: vi.fn((id: string) => ({ shareId: id === 'other-child' ? 'other-share' : 'share-1' })) }
+  const lifecycle = createViewerLifecycle({
+    ...(connection === undefined ? {} : { connection }),
+    forkStateOf: vi.fn(() => options.forkState),
+    ...(options.admitted === undefined ? {} : { viewerStillAdmitted: vi.fn(() => options.admitted) }),
+    refreshAdmission: vi.fn(async () => {}),
+    writeRefusal: vi.fn((_viewer, action: string) => action === 'session/prompt' ? 'not-writable' : undefined),
+    forks,
+  } as never)
+  return { lifecycle, connection, peers, forks }
+}
+
+describe('share and access refusals', () => {
+  it('reports a stopped or expired share before viewer admission', () => {
+    const stopped = harness({ forkState: { stopped: true, viewerAdmitted: true, allowsFork: false } })
+    expect(stopped.lifecycle.shareRefusal('share-1', viewer)).toMatchObject({ status: 403, body: { error: 'share-stopped' } })
+    const expired = harness({ forkState: { expiresAt: '2000-01-01T00:00:00Z', viewerAdmitted: true, allowsFork: false } })
+    expect(expired.lifecycle.shareRefusal('share-1', viewer)).toMatchObject({ body: { error: 'share-expired' } })
+  })
+
+  it('reports a viewer whose grant ended and invents no refusal without a state', () => {
+    const revoked = harness({ admitted: false })
+    expect(revoked.lifecycle.shareRefusal('share-1', viewer))
+      .toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+    expect(harness({ admitted: true }).lifecycle.shareRefusal('share-1', viewer)).toBeUndefined()
+    expect(harness().lifecycle.shareRefusal('share-1', viewer)).toBeUndefined()
+    const live = harness({ forkState: { stopped: false, viewerAdmitted: true, allowsFork: false } })
+    expect(live.lifecycle.shareRefusal('share-1', viewer)).toBeUndefined()
+  })
+
+  it('reads the policy write refusal and composes the trusted state', () => {
+    const h = harness({ admitted: true })
+    expect(h.lifecycle.accessRefusal('share-1', viewer, 'session/prompt', 'session-1', true))
+      .toMatchObject({ status: 403, reason: 'not-writable', body: { error: 'not-writable' } })
+    expect(h.lifecycle.accessRefusal('share-1', viewer, 'session/cancel', 'session-1', true)).toBeUndefined()
+    expect(h.lifecycle.trustedState('share-1', viewer, 'session/prompt', 'session-1'))
+      .toMatchObject({ reason: 'not-writable' })
+    // The same policy rule decides a cancel, and this fixture allows it.
+    expect(h.lifecycle.trustedState('share-1', viewer, 'session/cancel', 'session-1')).toBeUndefined()
+  })
+})
+
+describe('calls, peers, and admission refreshes', () => {
+  it('tracks a refresh around one call and stops on end', async () => {
+    const h = harness()
+    const controller = new AbortController()
+    const call = h.lifecycle.beginCall('share-1', viewer, controller, controller.signal)
+    await h.lifecycle.refreshAdmission('share-1', controller.signal)
+    h.lifecycle.endCall(call)
+    await expect(h.lifecycle.refreshAdmission('share-1')).resolves.toBeUndefined()
+  })
+
+  it('cancels calls and streams a share or viewer lost access to', () => {
+    const h = harness({ admitted: false })
+    const controller = new AbortController()
+    const call = h.lifecycle.beginCall('share-1', viewer, controller, controller.signal)
+    h.lifecycle.recheckAdmission('share-1')
+    expect(controller.signal.aborted).toBe(true)
+
+    // A call already refreshing reports its own refusal and is left for its answer.
+    const refreshingController = new AbortController()
+    h.lifecycle.beginCall('share-1', viewer, refreshingController, refreshingController.signal)
+    void h.lifecycle.refreshAdmission('share-1', refreshingController.signal)
+    h.lifecycle.recheckAdmission('share-1')
+    h.lifecycle.endCall(call)
+  })
+
+  it('cancels only the calls of the share and viewer it names', () => {
+    const h = harness({ admitted: false })
+    const mine = new AbortController()
+    const otherViewer = new AbortController()
+    const otherShare = new AbortController()
+    h.lifecycle.beginCall('share-1', viewer, mine, mine.signal)
+    h.lifecycle.beginCall('share-1', other, otherViewer, otherViewer.signal)
+    h.lifecycle.beginCall('share-2', viewer, otherShare, otherShare.signal)
+    h.lifecycle.cancelPendingCalls('share-1')
+    expect(mine.signal.aborted).toBe(true)
+    expect(otherViewer.signal.aborted).toBe(true)
+    expect(otherShare.signal.aborted).toBe(false)
+
+    const viewerOnly = new AbortController()
+    h.lifecycle.beginCall('share-1', viewer, viewerOnly, viewerOnly.signal)
+    h.lifecycle.closeViewerStreams('share-1', viewer)
+    expect(viewerOnly.signal.aborted).toBe(true)
+  })
+
+  it('hands out one peer per share and reader and replaces a disposed one', () => {
+    const h = harness()
+    const first = h.lifecycle.peerFor('share-1', viewer)!
+    expect(h.lifecycle.peerFor('share-1', viewer)).toBe(first)
+    expect(h.lifecycle.peerFor('share-1', other)).not.toBe(first)
+    expect(harness({ connection: false }).lifecycle.peerFor('share-1', viewer)).toBeUndefined()
+  })
+
+  it('disposes the peers that match and reports a failed disposal', async () => {
+    const h = harness()
+    const first = h.lifecycle.peerFor('share-1', viewer)!
+    const second = h.lifecycle.peerFor('share-1', other)!
+    // oxlint-disable-next-line typescript/unbound-method -- typed test doubles and mock calls.
+    vi.mocked(second.dispose).mockRejectedValueOnce(new Error('dispose failed'))
+    h.lifecycle.disposePeers(entry => entry.actor.subjectId === viewer.subjectId)
+    // oxlint-disable-next-line typescript/unbound-method -- typed test doubles and mock calls.
+    expect(first.dispose).toHaveBeenCalled()
+    h.lifecycle.disposePeers(entry => entry.actor.subjectId === other.subjectId)
+    await Promise.resolve()
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('viewer peer disposal failed'))
+
+    const plain = harness()
+    const plainPeer = plain.lifecycle.peerFor('share-1', viewer)!
+    // oxlint-disable-next-line typescript/unbound-method -- typed test doubles and mock calls.
+    vi.mocked(plainPeer.dispose).mockRejectedValueOnce('plain failure')
+    plain.lifecycle.disposePeers(() => true)
+    await Promise.resolve()
+    expect(console.warn).toHaveBeenCalledWith(expect.stringContaining('plain failure'))
+  })
+})
+
+describe('streams and the idle sweep', () => {
+  it('releases an idle stream, aborts it, and stops the sweep when none remain', () => {
+    vi.useFakeTimers()
+    const h = harness()
+    const abandoned = stream({ lastPolledAt: Date.now() - VIEWER_STREAM_IDLE_TTL_MS - 1 })
+    h.lifecycle.registerStream(abandoned)
+    vi.advanceTimersByTime(VIEWER_STREAM_IDLE_TTL_MS + 30_000)
+    expect(abandoned.controller.signal.aborted).toBe(true)
+    expect(h.lifecycle.streamOf('share-1', 1)).toBeUndefined()
+    // A stream polled inside the window survives.
+    const live = stream({ id: 2, lastPolledAt: Date.now() })
+    h.lifecycle.registerStream(live)
+    vi.advanceTimersByTime(30_000)
+    expect(h.lifecycle.streamOf('share-1', 2)).toBe(live)
+  })
+
+  it('releases an opening and its stream, and reports whether a reservation was current', () => {
+    const h = harness()
+    const reservation = { shareId: 'share-1', actor: viewer, controller: new AbortController() }
+    h.lifecycle.reserveOpening('share-1', 3, reservation)
+    expect(h.lifecycle.openingOf('share-1', 3)).toBe(reservation)
+    expect(h.lifecycle.releaseOpening('share-1', 3, reservation)).toBe(true)
+    h.lifecycle.reserveOpening('share-1', 3, reservation)
+    expect(h.lifecycle.releaseOpening('share-1', 3, { ...reservation, controller: new AbortController() })).toBe(false)
+    // A release drops an opening reservation left under the same key.
+    h.lifecycle.release('share-1', 3)
+    expect(reservation.controller.signal.aborted).toBe(true)
+    expect(h.lifecycle.openingOf('share-1', 3)).toBeUndefined()
+
+    const failing = stream({ id: 5, iterator: { next: async () => ({ done: false, value: 1 }), return: async () => { throw new Error('return failed') } } })
+    h.lifecycle.registerStream(failing)
+    h.lifecycle.release('share-1', 5)
+    expect(failing.controller.signal.aborted).toBe(true)
+    h.lifecycle.release('share-1', 99)
+  })
+
+  it('releases an idle stream whose iterator refuses to close', () => {
+    vi.useFakeTimers()
+    const h = harness()
+    const stubborn = stream({
+      lastPolledAt: Date.now() - VIEWER_STREAM_IDLE_TTL_MS - 1,
+      iterator: { next: async () => ({ done: false, value: 1 }), return: async () => { throw new Error('return failed') } },
+    })
+    h.lifecycle.registerStream(stubborn)
+    vi.advanceTimersByTime(VIEWER_STREAM_IDLE_TTL_MS + 30_000)
+    expect(h.lifecycle.streamOf('share-1', 1)).toBeUndefined()
+  })
+
+  it('releases the opening and stream a revoked share had in flight', () => {
+    const h = harness({ admitted: false })
+    const reservation = { shareId: 'share-1', actor: viewer, controller: new AbortController() }
+    h.lifecycle.reserveOpening('share-1', 8, reservation)
+    const held = stream({ id: 9 })
+    h.lifecycle.registerStream(held)
+    h.lifecycle.recheckAdmission('share-1')
+    expect(reservation.controller.signal.aborted).toBe(true)
+    expect(held.controller.signal.aborted).toBe(true)
+    expect(h.lifecycle.streamOf('share-1', 9)).toBeUndefined()
+
+    // An admitted share keeps its in-flight work, and a second reservation is left alone.
+    const admitted = harness({ admitted: true })
+    admitted.lifecycle.peerFor('share-1', viewer)
+    const kept = { shareId: 'share-1', actor: viewer, controller: new AbortController() }
+    const elsewhere = { shareId: 'share-1', actor: viewer, controller: new AbortController() }
+    admitted.lifecycle.reserveOpening('share-1', 10, kept)
+    admitted.lifecycle.reserveOpening('share-1', 11, elsewhere)
+    admitted.lifecycle.recheckAdmission('share-1')
+    expect(kept.controller.signal.aborted).toBe(false)
+
+    const mixed = harness({ admitted: false })
+    mixed.lifecycle.peerFor('share-1', viewer)
+    const first = { shareId: 'share-1', actor: viewer, controller: new AbortController() }
+    const second = { shareId: 'share-1', actor: viewer, controller: new AbortController() }
+    mixed.lifecycle.reserveOpening('share-1', 12, first)
+    mixed.lifecycle.reserveOpening('share-1', 13, second)
+    mixed.lifecycle.recheckAdmission('share-1')
+    expect(first.controller.signal.aborted).toBe(true)
+    expect(second.controller.signal.aborted).toBe(true)
+  })
+
+  it('reports whether a stream is still current', () => {
+    const h = harness()
+    const held = stream()
+    h.lifecycle.registerStream(held)
+    expect(h.lifecycle.streamIsCurrent('share-1', 1, held)).toBe(true)
+    held.controller.abort()
+    expect(h.lifecycle.streamIsCurrent('share-1', 1, held)).toBe(false)
+    expect(h.lifecycle.streamIsCurrent('share-1', 1, stream())).toBe(false)
+  })
+})
+
+describe('teardown', () => {
+  it('closes one share calls, streams, peers, and the enforcement its children hold', () => {
+    const h = harness()
+    const callController = new AbortController()
+    h.lifecycle.beginCall('share-1', viewer, callController, callController.signal)
+    const held = stream({ iterator: { next: async () => ({ done: false, value: 1 }), return: async () => { throw new Error('return failed') } } })
+    h.lifecycle.registerStream(held)
+    const reservation = { shareId: 'share-1', actor: viewer, controller: new AbortController() }
+    h.lifecycle.reserveOpening('share-1', 7, reservation)
+    h.lifecycle.peerFor('share-1', viewer)
+    const releaseEnforcement = vi.fn()
+    const otherEnforcement = vi.fn()
+    h.lifecycle.holdEnforcement('child-1', releaseEnforcement)
+    h.lifecycle.holdEnforcement('other-child', otherEnforcement)
+    const elsewhere = { shareId: 'share-2', actor: viewer, controller: new AbortController() }
+    h.lifecycle.reserveOpening('share-2', 14, elsewhere)
+    h.lifecycle.registerStream(stream({ shareId: 'share-2', id: 15 }))
+    h.lifecycle.closeShare('share-1')
+    expect(elsewhere.controller.signal.aborted).toBe(false)
+    expect(callController.signal.aborted).toBe(true)
+    expect(reservation.controller.signal.aborted).toBe(true)
+    expect(held.controller.signal.aborted).toBe(true)
+    expect(releaseEnforcement).toHaveBeenCalled()
+    // A child whose record names another share keeps its limit.
+    expect(otherEnforcement).not.toHaveBeenCalled()
+  })
+
+  it('closes only one viewer streams and reports how many were released', () => {
+    const h = harness()
+    const mine = stream({ id: 1, iterator: { next: async () => ({ done: false, value: 1 }), return: async () => { throw new Error('return failed') } } })
+    const theirs = stream({ id: 2, actor: other })
+    h.lifecycle.registerStream(mine)
+    h.lifecycle.registerStream(theirs)
+    h.lifecycle.peerFor('share-1', viewer)
+    const reservation = { shareId: 'share-1', actor: viewer, controller: new AbortController() }
+    const foreignReservation = { shareId: 'share-1', actor: other, controller: new AbortController() }
+    h.lifecycle.reserveOpening('share-1', 5, reservation)
+    h.lifecycle.reserveOpening('share-1', 6, foreignReservation)
+    expect(h.lifecycle.closeViewerStreams('share-1', viewer)).toBe(2)
+    expect(foreignReservation.controller.signal.aborted).toBe(false)
+    expect(reservation.controller.signal.aborted).toBe(true)
+    expect(mine.controller.signal.aborted).toBe(true)
+    expect(theirs.controller.signal.aborted).toBe(false)
+  })
+
+  it('closes a fresh reader without a sweep timer', () => {
+    const h = harness()
+    h.lifecycle.close()
+    h.lifecycle.close()
+  })
+
+  it('disposes every resource the reader holds', () => {
+    const h = harness()
+    const callController = new AbortController()
+    h.lifecycle.beginCall('share-1', viewer, callController, callController.signal)
+    h.lifecycle.registerStream(stream({
+      iterator: { next: async () => ({ done: false, value: 1 }), return: async () => { throw new Error('return failed') } },
+    }))
+    const reservation = { shareId: 'share-1', actor: viewer, controller: new AbortController() }
+    h.lifecycle.reserveOpening('share-1', 6, reservation)
+    h.lifecycle.peerFor('share-1', viewer)
+    const releaseEnforcement = vi.fn()
+    h.lifecycle.holdEnforcement('child-1', releaseEnforcement)
+    h.lifecycle.close()
+    expect(callController.signal.aborted).toBe(true)
+    expect(reservation.controller.signal.aborted).toBe(true)
+    expect(releaseEnforcement).toHaveBeenCalled()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-page-roster.client.ts b/packages/experimental/liveshare/tests/viewer-page-roster.client.ts
new file mode 100644
index 0000000000..e43e067812
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-page-roster.client.ts
@@ -0,0 +1,84 @@
+/**
+ * Test-only client roster of the assembled viewer page.
+ *
+ * A served viewer page is the owner's own Web shell with the owner's client plugins; this roster is the
+ * subset the viewer page specs need: the wire plugin, the Gateway, remote access, the Session/Workspace controllers,
+ * the menu service, presentation plugins, and the Liveshare `./client` face, which mounts the viewer surfaces when the
+ * carrier names a share. Every row is the package's own `/client` face registered as a module-table
+ * factory. It must be imported only after {@link prepareViewerRemoteFaces} answered the generated
+ * `/remote` faces these plugins import.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/tests/viewer-page-roster
+ */
+
+import * as apiGateway from '@deepseek-ai/dsh-api-gateway/client'
+import * as apiRemoteAccess from '@deepseek-ai/dsh-api-remote-access/client'
+import * as apiRemotes from '@deepseek-ai/dsh-api-remotes/client'
+import * as apiSessionController from '@deepseek-ai/dsh-api-session-controller/client'
+import * as apiWorkspaceController from '@deepseek-ai/dsh-api-workspace-controller/client'
+import * as clientConnection from '@deepseek-ai/dsh-client-connection/client'
+import * as clientFileUpload from '@deepseek-ai/dsh-client-file-upload/client'
+import * as clientLocale from '@deepseek-ai/dsh-client-locale/client'
+import * as clientModules from '@deepseek-ai/dsh-client-modules/client'
+import * as clientResources from '@deepseek-ai/dsh-client-resources/client'
+import * as clientShortcuts from '@deepseek-ai/dsh-client-shortcuts/client'
+import * as uiAttachment from '@deepseek-ai/dsh-client-ui-attachment/client'
+import * as uiChat from '@deepseek-ai/dsh-client-ui-chat/client'
+import * as uiContextMenu from '@deepseek-ai/dsh-client-ui-context-menu/client'
+import * as uiConversation from '@deepseek-ai/dsh-client-ui-conversation/client'
+import * as uiDeliverables from '@deepseek-ai/dsh-client-ui-deliverables/client'
+import * as uiFileDrag from '@deepseek-ai/dsh-client-ui-file-drag/client'
+import * as uiLayout from '@deepseek-ai/dsh-client-ui-layout/client'
+import * as uiRenderer from '@deepseek-ai/dsh-client-ui-renderer/client'
+import * as uiSession from '@deepseek-ai/dsh-client-ui-session/client'
+import * as uiSettings from '@deepseek-ai/dsh-client-ui-settings/client'
+import * as uiSidebar from '@deepseek-ai/dsh-client-ui-sidebar/client'
+import * as uiSidebarRight from '@deepseek-ai/dsh-client-ui-sidebar-right/client'
+import * as uiTheme from '@deepseek-ai/dsh-client-ui-theme/client'
+import * as uiTool from '@deepseek-ai/dsh-client-ui-tool/client'
+import * as uiTrajectory from '@deepseek-ai/dsh-client-ui-trajectory/client'
+import * as uiWorkspace from '@deepseek-ai/dsh-client-ui-workspace/client'
+import * as typertRegistry from '@deepseek-ai/dsh-typert-registry/client'
+import * as liveshare from '../src/client/index.ts'
+
+/** One module-table row: the entry id the Loader creates, and that plugin's client exports. */
+export interface ViewerPageRosterRow {
+  readonly id: string
+  readonly exports: Readonly<Record<string, unknown>>
+}
+
+/** Entry id of the module-system bootstrap whose exports the facade hands to the module system. */
+export const VIEWER_PAGE_BOOTSTRAP_ID = '@deepseek-ai/dsh-client-modules'
+
+/** The viewer page roster; Cordis composes these entries by service injection, so order is irrelevant. */
+export const VIEWER_PAGE_ROSTER: readonly ViewerPageRosterRow[] = [
+  { id: '@deepseek-ai/dsh-typert-registry', exports: typertRegistry },
+  { id: '@deepseek-ai/dsh-experimental-liveshare', exports: liveshare },
+  { id: VIEWER_PAGE_BOOTSTRAP_ID, exports: clientModules },
+  { id: '@deepseek-ai/dsh-client-connection', exports: clientConnection },
+  { id: '@deepseek-ai/dsh-api-gateway', exports: apiGateway },
+  { id: '@deepseek-ai/dsh-api-remote-access', exports: apiRemoteAccess },
+  { id: '@deepseek-ai/dsh-api-remotes', exports: apiRemotes },
+  { id: '@deepseek-ai/dsh-api-session-controller', exports: apiSessionController },
+  { id: '@deepseek-ai/dsh-api-workspace-controller', exports: apiWorkspaceController },
+  { id: '@deepseek-ai/dsh-client-file-upload', exports: clientFileUpload },
+  { id: '@deepseek-ai/dsh-client-locale', exports: clientLocale },
+  { id: '@deepseek-ai/dsh-client-resources', exports: clientResources },
+  { id: '@deepseek-ai/dsh-client-shortcuts', exports: clientShortcuts },
+  { id: '@deepseek-ai/dsh-client-ui-renderer', exports: uiRenderer },
+  { id: '@deepseek-ai/dsh-client-ui-theme', exports: uiTheme },
+  { id: '@deepseek-ai/dsh-client-ui-settings', exports: uiSettings },
+  { id: '@deepseek-ai/dsh-client-ui-layout', exports: uiLayout },
+  { id: '@deepseek-ai/dsh-client-ui-session', exports: uiSession },
+  { id: '@deepseek-ai/dsh-client-ui-sidebar', exports: uiSidebar },
+  { id: '@deepseek-ai/dsh-client-ui-conversation', exports: uiConversation },
+  { id: '@deepseek-ai/dsh-client-ui-chat', exports: uiChat },
+  { id: '@deepseek-ai/dsh-client-ui-context-menu', exports: uiContextMenu },
+  { id: '@deepseek-ai/dsh-client-ui-tool', exports: uiTool },
+  { id: '@deepseek-ai/dsh-client-ui-attachment', exports: uiAttachment },
+  { id: '@deepseek-ai/dsh-client-ui-file-drag', exports: uiFileDrag },
+  { id: '@deepseek-ai/dsh-client-ui-sidebar-right', exports: uiSidebarRight },
+  { id: '@deepseek-ai/dsh-client-ui-trajectory', exports: uiTrajectory },
+  { id: '@deepseek-ai/dsh-client-ui-deliverables', exports: uiDeliverables },
+  { id: '@deepseek-ai/dsh-client-ui-workspace', exports: uiWorkspace },
+]
diff --git a/packages/experimental/liveshare/tests/viewer-page.client.ts b/packages/experimental/liveshare/tests/viewer-page.client.ts
new file mode 100644
index 0000000000..0ec02d85b0
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-page.client.ts
@@ -0,0 +1,192 @@
+/**
+ * Test-only assembled viewer page: the owner's Web shell booted in-process with the Relay's carrier.
+ *
+ * A served viewer page is the owner's own `apps/web` document with the carrier script placed first.
+ * This helper reproduces that page in jsdom without a build: it installs the carrier through
+ * {@link installViewerCarrier}, then a module-loader facade, a test-local roster
+ * ({@link VIEWER_PAGE_ROSTER}) registered as module-table factories, a forged `__DSH_BOOT__` graph
+ * naming exactly those rows, and runs {@link AppWebEntry}. The forged boot graph and roster are test
+ * infrastructure only: production pages receive the owner's real boot graph from the owner's Host.
+ *
+ * Generated `<package>/remote` faces exist only in built `lib/` output, so they are generated from
+ * source here, and the Client entries that import them (the Remote assembly and the remote-access
+ * plugin) are answered through `vi.doMock` before the roster is first imported.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/tests/viewer-page
+ */
+
+import { readFileSync, writeFileSync } from 'node:fs'
+import { dirname, join, resolve } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import type { Context } from '@deepseek-ai/cordis'
+import { AppWebEntry } from '@deepseek-ai/dsh-client-web'
+import { createClientModuleSystem } from '@deepseek-ai/dsh-client-modules/client'
+import type {
+  ClientBundleRegistration, ClientModuleCreateOptions, ClientModuleLoaderTarget, WebBootGraph,
+} from '@deepseek-ai/dsh-client-modules/client'
+import { installViewerCarrier } from '../../liveshare-protocol/src/viewer-carrier.ts'
+import { act } from '@testing-library/react'
+import { afterAll, vi } from 'vitest'
+import type { ViewerPageRosterRow } from './viewer-page-roster.client.ts'
+import { allocateViewerStaging, disposeViewerStaging } from './viewer-staging.client.ts'
+
+const testsDir = dirname(fileURLToPath(import.meta.url))
+const workspaceRoot = resolve(testsDir, '../../../..')
+/** Staging parent for generated faces; inside the workspace so their `zod` import resolves. */
+const stagingParent = resolve(testsDir, '../lib')
+/** Package whose Client plugin mounts its own generated Remote face rather than the assembly's. */
+const REMOTE_ACCESS_PACKAGE = '@deepseek-ai/dsh-api-remote-access'
+/** Read budget the carrier receives; production pages receive the Relay's configured value. */
+const READ_TIMEOUT_MS = 30_000
+
+/** Host-face module that writes the generated Remote faces; see viewer-remote-faces.ts. */
+interface RemoteFaceGenerator {
+  readonly generateViewerRemoteFaces: (workspaceRoot: string, dir: string) => ReadonlyMap<string, string>
+}
+
+let preparing: Promise<void> | undefined
+let stagingDir: string | undefined
+
+afterAll(() => {
+  disposeViewerStaging(stagingDir, stagingParent)
+  stagingDir = undefined
+})
+
+/**
+ * Generate every Host package's `./remote` face from source, then answer the Remote assembly
+ * (`@deepseek-ai/dsh-api-remotes/client`) and the self-mounting remote-access Client plugin
+ * (`@deepseek-ai/dsh-api-remote-access/client`) with their own sources whose `/remote` imports name
+ * the generated faces.
+ * @returns Resolves once the faces are mocked for later dynamic imports.
+ */
+async function generateRemoteFaces(): Promise<void> {
+  const dir = allocateViewerStaging(stagingParent, 'viewer-remote-faces-')
+  stagingDir = dir
+  // The generator is Host-face Node code, so this jsdom module loads it by path rather than by a
+  // static import the client program would have to type.
+  const generatorModule = join(testsDir, 'viewer-remote-faces.ts')
+  const { generateViewerRemoteFaces } = await import(/* @vite-ignore */ generatorModule) as RemoteFaceGenerator
+  const faces = generateViewerRemoteFaces(workspaceRoot, dir)
+  const assembly = readFileSync(join(workspaceRoot, 'packages/api/remotes/src/client/index.ts'), 'utf8')
+    .replace(/^(import \w+ from )'(@deepseek-ai\/[^']+)\/remote'$/gmu, (_line, head: string, name: string) => {
+      const file = faces.get(name)
+      if (file === undefined) throw new Error(`viewer page: no generated Remote face for ${name}`)
+      return `${head}${JSON.stringify(file)}`
+    })
+  const assemblyFile = join(dir, 'api-remotes-client.ts')
+  writeFileSync(assemblyFile, assembly)
+  vi.doMock('@deepseek-ai/dsh-api-remotes/client', () => import(/* @vite-ignore */ assemblyFile))
+  const accessFace = faces.get(REMOTE_ACCESS_PACKAGE)
+  if (accessFace === undefined) throw new Error(`viewer page: no generated Remote face for ${REMOTE_ACCESS_PACKAGE}`)
+  // The plugin's own `/remote` import must name the generated face in its source: module resolution
+  // runs while the entry is transformed, before a mock of that specifier could answer it. The staged
+  // copy keeps its relative imports on the plugin's own modules.
+  const accessClientDir = join(workspaceRoot, 'packages/api/remote-access/src/client')
+  const accessClientSource = readFileSync(join(accessClientDir, 'index.ts'), 'utf8')
+  const accessRemoteImport = `from '${REMOTE_ACCESS_PACKAGE}/remote'`
+  if (!accessClientSource.includes(accessRemoteImport)) {
+    throw new Error(`viewer page: ${REMOTE_ACCESS_PACKAGE}/client no longer imports its Remote face`)
+  }
+  const accessClient = accessClientSource
+    .replace(accessRemoteImport, `from ${JSON.stringify(accessFace)}`)
+    .replace(/from '(\.\.?\/[^']+)'/gu, (_clause, path: string) => `from ${JSON.stringify(resolve(accessClientDir, path))}`)
+  const accessClientFile = join(dir, 'api-remote-access-client.ts')
+  writeFileSync(accessClientFile, accessClient)
+  vi.doMock(`${REMOTE_ACCESS_PACKAGE}/client`, () => import(/* @vite-ignore */ accessClientFile))
+}
+
+/**
+ * Prepare the generated Remote faces once per spec file.
+ * @returns Resolves when the roster may be imported.
+ */
+export function prepareViewerRemoteFaces(): Promise<void> {
+  preparing ??= generateRemoteFaces()
+  return preparing
+}
+
+/** Share the assembled page presents, as the Relay names it in the carrier options. */
+export interface ViewerPageTarget {
+  readonly basePath?: string
+  readonly shareId: string
+  readonly sessionId: string
+}
+
+/** One assembled viewer page. */
+export interface AssembledViewerPage {
+  /** A booted client Context; services are read through `get`. */
+  context(): Context
+  /** Dispose the application, then remove the page globals it installed. */
+  dispose(): Promise<void>
+}
+
+interface ViewerPageWindow {
+  __DSH_BOOT__?: WebBootGraph
+  __ModuleLoader__?: ClientModuleLoaderTarget
+}
+
+const PROBE_ID = 'test/viewer-page-probe'
+
+/**
+ * Boot the assembled viewer page into `container`.
+ * @param container - Application mount point.
+ * @param target - Share the carrier names.
+ * @returns The page; it keeps booting after this resolves.
+ */
+export async function mountViewerPage(container: HTMLElement, target: ViewerPageTarget): Promise<AssembledViewerPage> {
+  await prepareViewerRemoteFaces()
+  const { VIEWER_PAGE_BOOTSTRAP_ID, VIEWER_PAGE_ROSTER } = await import('./viewer-page-roster.client.ts')
+  let probed: Context | undefined
+  const probe: ViewerPageRosterRow = {
+    id: PROBE_ID,
+    exports: { name: 'viewer-page-probe', apply: (ctx: Context) => { probed = ctx } },
+  }
+  const rows = [...VIEWER_PAGE_ROSTER, probe]
+  const bootstrap = rows.find(row => row.id === VIEWER_PAGE_BOOTSTRAP_ID)
+  if (bootstrap === undefined) throw new Error('viewer page: roster is missing the module-system bootstrap')
+  installViewerCarrier({
+    basePath: target.basePath ?? '',
+    shareId: target.shareId,
+    sessionId: target.sessionId,
+    readTimeoutMs: READ_TIMEOUT_MS,
+  })
+  const page = globalThis as ViewerPageWindow
+  const facade: ClientModuleLoaderTarget = {
+    mode: 'queue',
+    pendingQueue: [],
+    load(registration: ClientBundleRegistration): void {
+      facade.pendingQueue.push(registration)
+    },
+    create(options: ClientModuleCreateOptions) {
+      return createClientModuleSystem(facade, { id: VIEWER_PAGE_BOOTSTRAP_ID, exports: bootstrap.exports }, options)
+    },
+  }
+  page.__ModuleLoader__ = facade
+  for (const row of rows) {
+    // The bootstrap arrives as the module system's own materialized module; a factory would duplicate it.
+    if (row.id === VIEWER_PAGE_BOOTSTRAP_ID) continue
+    // A plain copy: the module table probes optional exports such as `default`, which a mocked module
+    // namespace rejects.
+    facade.load({ id: row.id, factory: () => ({ ...row.exports }) })
+  }
+  const ids = rows.map(row => row.id)
+  page.__DSH_BOOT__ = {
+    rev: 'viewer-page',
+    entries: ids.map(id => ({ id, url: `viewer-page:${id}`, rev: 'viewer-page' })),
+    batches: [{ phase: 'application', url: 'viewer-page', rev: 'viewer-page', entries: ids }],
+  }
+  const entry = new AppWebEntry(container)
+  void entry.run()
+  return {
+    context() {
+      if (probed === undefined) throw new Error('viewer page: application has not booted')
+      return probed
+    },
+    async dispose() {
+      await act(async () => { await entry.dispose() })
+      probed = undefined
+      for (const key of ['__DSH_BOOT__', '__ModuleLoader__', '__DSH_LIVESHARE_VIEWER__', '__DSH_TRANSPORT__']) {
+        Reflect.deleteProperty(globalThis, key)
+      }
+    },
+  }
+}
diff --git a/packages/experimental/liveshare/tests/viewer-plugin-services.client.ts b/packages/experimental/liveshare/tests/viewer-plugin-services.client.ts
new file mode 100644
index 0000000000..739943c1f5
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-plugin-services.client.ts
@@ -0,0 +1,77 @@
+/**
+ * Test-only Client services for viewer plugin benches.
+ *
+ * `remoteAccess` answers over the remote-access package's own snapshot owner, so a bench drives it
+ * with the same `remoteAccess/follow` frames the owner's Gateway sends a share reader; `connection`
+ * carries only the recovery state the viewer page reads.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/tests/viewer-plugin-services
+ */
+
+import type { Context } from '@deepseek-ai/cordis'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { createSnapshotStore, type SnapshotStore } from '@deepseek-ai/dsh-client-store'
+import type { ConnectionState } from '@deepseek-ai/dsh-client-connection/client'
+import type { RemoteAccessFrame, TypertResourceKind } from '@deepseek-ai/dsh-api-remote-access/client'
+import { ClientAccessState } from '@deepseek-ai/dsh-api-remote-access/src/client/state.ts'
+import { en, NS, zh } from '../src/client/locales.ts'
+
+/** Scripted access snapshot of one viewer page. */
+export interface ViewerRemoteAccess {
+  /**
+   * Deliver one `remoteAccess/follow` frame.
+   * @param frame - Baseline, upsert, or remove frame.
+   */
+  push(frame: RemoteAccessFrame): void
+}
+
+/**
+ * Provide `remoteAccess` on `ctx`, starting from the baseline the served index injected; every answer
+ * is false until a baseline arrives.
+ * @param ctx - Bench root context.
+ * @param initial - The page's injected opening baseline, when the bench serves one.
+ * @returns The scripted snapshot.
+ */
+export function provideViewerRemoteAccess(
+  ctx: Context,
+  initial?: Extract<RemoteAccessFrame, { type: 'baseline' }>,
+): ViewerRemoteAccess {
+  const state = new ClientAccessState(initial)
+  ctx.provide('remoteAccess', {
+    source: (kind: TypertResourceKind, id: string, action: string) => state.resource(kind, id, action),
+  })
+  return {
+    push(frame) {
+      if (frame.type === 'baseline') state.replace(frame)
+      else state.update(frame)
+    },
+  }
+}
+
+/**
+ * Provide `connection` on `ctx` with a scripted recovery state.
+ * @param ctx - Bench root context.
+ * @returns The state store; undefined until the first connection outcome.
+ */
+export function provideViewerConnection(ctx: Context): SnapshotStore<ConnectionState | undefined> {
+  const state = createSnapshotStore<ConnectionState | undefined>(undefined)
+  ctx.provide('connection', { state } as never)
+  return state
+}
+
+/**
+ * Provide the client locale registry with this package's dictionaries, bound to one language.
+ *
+ * The viewer surfaces read their copy through the same locale seat the owner's dialogs do, so a bench
+ * that mounts one provides it exactly as the assembled viewer page does.
+ * @param ctx - Bench root context.
+ * @param language - Language the mounted surfaces state their copy in.
+ * @returns The provided registry, for a case that switches language mid-test.
+ */
+export function provideViewerLocale(ctx: Context, language: 'zh' | 'en' = 'zh'): LocaleRuntime {
+  const locale = new LocaleRuntime(ctx)
+  ctx.provide('locale', locale)
+  locale.register(NS, { zh, en })
+  locale.setLocale(language)
+  return locale
+}
diff --git a/packages/experimental/liveshare/tests/viewer-privacy-bridge.d.ts b/packages/experimental/liveshare/tests/viewer-privacy-bridge.d.ts
new file mode 100644
index 0000000000..15c65e8af7
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-privacy-bridge.d.ts
@@ -0,0 +1,15 @@
+/** Test-only request/response boundary between the Host reader and built Viewer fixture. */
+import type { ViewerAnswer, ViewerRequest } from '../src/viewer-channel.ts'
+
+/** A share-bound reader; identity and Host context remain inside its provider. */
+export interface PrivacyOwnerReader {
+  /** Decide one Viewer request under the fixture's share and actor. */
+  answer(request: ViewerRequest, signal?: AbortSignal): Promise<ViewerAnswer>
+  /** Release the reader's requests and streams. */
+  close(): void
+}
+
+/** Host provider loaded at runtime without merging Host and Client compiler contexts. */
+export interface PrivacyOwnerModule {
+  readonly createPrivacyOwnerReader: (dispatch: (request: Request) => Promise<Response>) => PrivacyOwnerReader
+}
diff --git a/packages/experimental/liveshare/tests/viewer-privacy-owner.ts b/packages/experimental/liveshare/tests/viewer-privacy-owner.ts
new file mode 100644
index 0000000000..ab7d403dc1
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-privacy-owner.ts
@@ -0,0 +1,85 @@
+/** Production Owner reader behind the privacy artifact fixture's neutral bridge. */
+import { Context } from '@deepseek-ai/cordis'
+import RemoteAccessService from '@deepseek-ai/dsh-api-remote-access'
+import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
+import { createViewerAccessPolicy } from '../src/host/viewer-access-policy.ts'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+import type { ForkShareState } from '../src/host/fork-policy.ts'
+import type { PrivacyOwnerReader } from './viewer-privacy-bridge.ts'
+import { readerConnection } from './viewer-read-peers.ts'
+
+/**
+ * Construct the real share-bound reader in front of an Owner Gateway stand-in.
+ *
+ * The production reader hands every call to the Owner's shared handler as the reader's Peer. The stand-in
+ * asks a real remote access service carrying the production `share-viewer` policy about that Peer's
+ * principal on the `global` resource, which is the resource of a call naming none, and answers a refusal
+ * as the Gateway encodes `remote-access/denied`; only an allowed call reaches `dispatch`, so it remains
+ * untouched for global reads.
+ */
+export function createPrivacyOwnerReader(dispatch: (request: Request) => Promise<Response>): PrivacyOwnerReader {
+  const actor = { providerId: 'oidc', tenantId: 'fixture-tenant', subjectId: 'reader' }
+  const share: ForkShareState = {
+    shareId: 'share-1', sessionId: 'fx-alpha', viewerAdmitted: true,
+    stopped: false, allowsFork: true, sessionMode: 'write',
+  }
+  const owner = new Context()
+  const access = (async (): Promise<RemoteAccessService> => {
+    await owner.plugin(TypertRegistry)
+    await owner.plugin(RemoteAccessService)
+    owner.remoteAccess.registerPolicy('share-viewer', createViewerAccessPolicy({
+      share: shareId => shareId === share.shareId ? share : undefined,
+      viewerAdmitted: () => true,
+      sourceConfined: () => true,
+      forks: {
+        find: () => undefined,
+        listForShare: () => [],
+        allowsPrompt: () => ({ ok: false, code: 'fork-unknown-child', message: 'the fixture Owner holds no forks' }),
+      },
+      workspaces: () => [],
+      declaredCapabilities: () => [],
+    }))
+    return owner.remoteAccess
+  })()
+  const readers = readerConnection(async (request, peer) => {
+    const envelope = await request.clone().json() as {
+      readonly rpcId?: string
+      readonly payload?: { readonly args?: Readonly<Record<string, unknown>> }
+    }
+    const [namespace = '', method = ''] = new URL(request.url).pathname.slice('/api/'.length).split('/')
+    const endpoint = `${namespace}/${method}` as const
+    const decision = (await access).decide({
+      principal: peer.principal,
+      action: endpoint,
+      resources: [{ kind: 'global' }],
+      args: envelope.payload?.args ?? {},
+    })
+    if (decision.kind === 'allow') return dispatch(request)
+    return Response.json({
+      type: 'server-response',
+      rpcId: envelope.rpcId,
+      result: {
+        ok: false,
+        error: {
+          code: 'remote-access/denied',
+          message: `remote access: ${endpoint}: access denied (${decision.reason})`,
+          details: { action: endpoint, reason: decision.reason },
+        },
+      },
+    })
+  })
+  const reader = createViewerReadService({
+    sharedSessionId: () => 'fx-alpha',
+    viewerStillAdmitted: () => true,
+    forkStateOf: () => share,
+    connection: readers.connection,
+  })
+  return {
+    answer: (request, signal) => reader.answer('share-1', request, actor, signal),
+    close: () => {
+      reader.close()
+      void readers.dispose()
+      void owner.fiber.dispose()
+    },
+  }
+}
diff --git a/packages/experimental/liveshare/tests/viewer-read-peers.ts b/packages/experimental/liveshare/tests/viewer-read-peers.ts
new file mode 100644
index 0000000000..03f6fc4def
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-read-peers.ts
@@ -0,0 +1,63 @@
+/**
+ * Reader Peers for viewer-reader specs: the reader dispatches every call and stream through one Peer
+ * per share and reader, so a spec supplies a Connection whose `createPeer` builds real Peers and whose
+ * shared handler records which Peer each call spoke for.
+ */
+import { Context } from '@deepseek-ai/cordis'
+import { Peer } from '@deepseek-ai/dsh-client-connection'
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import type { ShareRpcActor } from '@deepseek-ai/dsh-experimental-liveshare-protocol'
+import type { ViewerReadConnection } from '../src/host/viewer-read.ts'
+import type { ShareViewerPrincipal } from '../src/host/viewer-principal.ts'
+
+/** The reader most specs speak as. */
+export const READER: ShareRpcActor = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'ou_reader' }
+
+/** Fetch stand-in for the shared `/api` handler; the second argument is the Peer the call speaks for. */
+export type ReaderFetch = (request: Request, peer: PeerScope) => Promise<Response>
+
+/** A Connection stand-in plus the Peers it created. */
+export interface ReaderConnection {
+  readonly connection: ViewerReadConnection
+  /** Every Peer `createPeer` returned, in creation order. */
+  readonly peers: readonly PeerScope[]
+  /**
+   * The share-viewer principal of one created Peer.
+   * @param index - Creation index.
+   * @returns That Peer's principal.
+   */
+  readonly principalOf: (index: number) => ShareViewerPrincipal
+  /** Dispose the Context every created Peer hangs under. */
+  readonly dispose: () => Promise<void>
+}
+
+/**
+ * Build a Connection stand-in for a viewer reader.
+ * @param fetch - Shared-handler implementation; answers an empty JSON body by default.
+ * @returns The Connection, its Peers, and their owner's disposer.
+ */
+export function readerConnection(fetch?: ReaderFetch): ReaderConnection {
+  const owner = new Context()
+  const peers: PeerScope[] = []
+  const connection: ViewerReadConnection = {
+    createSharedFetchHandler: () => ({
+      requestBodyMode: () => 'buffered',
+      fetch: (request, peer) => fetch === undefined ? Promise.resolve(Response.json({})) : fetch(request, peer),
+    }),
+    createPeer: (options) => {
+      const peer = new Peer(owner, options)
+      peers.push(peer)
+      return peer
+    },
+  }
+  return {
+    connection,
+    peers,
+    principalOf: (index) => {
+      const principal = peers[index]?.principal
+      if (principal?.kind !== 'share-viewer') throw new Error(`peer ${String(index)} is not a share reader`)
+      return principal
+    },
+    dispose: () => owner.fiber.dispose().then(() => undefined),
+  }
+}
diff --git a/packages/experimental/liveshare/tests/viewer-read-refusal.spec.ts b/packages/experimental/liveshare/tests/viewer-read-refusal.spec.ts
new file mode 100644
index 0000000000..0857013443
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-read-refusal.spec.ts
@@ -0,0 +1,284 @@
+/**
+ * What the owner's read path refuses before it reads anything.
+ *
+ * A deadline that passed, a share the owner stopped, and a grant that ended all outlive the request
+ * that was admitted under them, so every read through a share — its calls, its stream opens, and each
+ * poll of a stream already open — re-reads the same verdicts the write path applies. Each refusal is a
+ * stable code the served page classifies as terminal instead of reconnecting around it.
+ */
+
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { createViewerReadService, type ViewerReadDeps } from '../src/host/viewer-read.ts'
+import type { ForkShareState } from '../src/host/fork-policy.ts'
+import { READER as viewer, readerConnection, type ReaderConnection } from './viewer-read-peers.ts'
+
+const otherViewer = { ...viewer, subjectId: 'ou_other' }
+
+/** One share this host publishes, still serving unless a case says otherwise. */
+function share(extra: Partial<ForkShareState> = {}): ForkShareState {
+  return {
+    shareId: 'share-1',
+    sessionId: 'session-1',
+    allowsFork: false,
+    viewerAdmitted: true,
+    stopped: false,
+    ...extra,
+  }
+}
+
+/** One owner dispatch that records what reached it, so a refusal is visible as a read never taken. */
+function connection(reads: string[]): ReaderConnection {
+  return readerConnection(async (request) => {
+    reads.push(new URL(request.url).pathname)
+    return new Response(JSON.stringify({ result: { ok: true, value: { items: [] } } }), {
+      status: 200,
+      headers: { 'content-type': 'application/json' },
+    })
+  })
+}
+
+/** One gateway yielding forever, with the cancellation signal of each opened stream recorded. */
+function gateway(signals: AbortSignal[]): NonNullable<ViewerReadDeps['gateway']> {
+  return {
+    wireStream: {
+      async open(_endpoint, _payload, _uplink, _peer, signal): Promise<AsyncIterable<unknown>> {
+        signals.push(signal)
+        return (async function* () {
+          let seq = 0
+          for (;;) {
+            await new Promise((resolve) => { setTimeout(resolve, 0) })
+            yield { seq: seq++ }
+          }
+        })()
+      },
+      failure(error: unknown): { readonly code: string; readonly message: string; readonly details: object } {
+        return { code: String(error), message: String(error), details: {} }
+      },
+    },
+  }
+}
+
+function service(options: {
+  readonly state?: () => ForkShareState | undefined
+  readonly admitted?: (shareId: string, actor: typeof viewer) => boolean
+} = {}) {
+  const reads: string[] = []
+  const signals: AbortSignal[] = []
+  const readers = connection(reads)
+  const read = createViewerReadService({
+    connection: readers.connection,
+    gateway: gateway(signals),
+    sharedSessionId: () => 'session-1',
+    forkStateOf: options.state ?? (() => share()),
+    ...(options.admitted === undefined ? {} : { viewerStillAdmitted: options.admitted }),
+  })
+  onTestFinished(() => readers.dispose())
+  return { read, reads, signals, readers }
+}
+
+const listCall = { op: 'call', path: '/api/session/list', body: {} } as const
+const followOpen = { op: 'stream-open', id: 1, endpoint: 'session/follow',
+  payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } } as const
+
+/** One viewer call as the Connection sends it: a Typert envelope naming the Session it addresses. */
+const promptEnvelope = (method: string, rpcId: string, sessionId: string) => ({
+  op: 'call' as const,
+  path: `/api/${method}`,
+  body: {
+    type: 'client-request',
+    rpcId,
+    method,
+    payload: { args: { request: { requestId: `${rpcId}-request`, sessionId, mode: 'queue', content: [] } } },
+  },
+})
+
+describe('the share state one viewer read is decided against', () => {
+  it('[P0] refuses a read of a share whose deadline passed, before the owner reads anything', async () => {
+    const { read, reads } = service({ state: () => share({ expiresAt: '2026-09-01T00:00:00.000Z' }) })
+
+    expect(await read.answer('share-1', listCall, viewer))
+      .toMatchObject({ status: 403, body: { error: 'share-expired' } })
+    // The refusal happened here, so the owner's own endpoint registry was never reached.
+    expect(reads).toEqual([])
+    // A stream is refused before its opener runs, so no upstream subscription is created either.
+    expect(await read.answer('share-1', followOpen, viewer))
+      .toMatchObject({ status: 403, body: { error: 'share-expired' } })
+    read.close()
+  })
+
+  it('refuses every read of a share the owner stopped', async () => {
+    const { read } = service({ state: () => share({ stopped: true }) })
+
+    expect(await read.answer('share-1', listCall, viewer))
+      .toMatchObject({ status: 403, body: { error: 'share-stopped' } })
+    expect(await read.answer('share-1', followOpen, viewer))
+      .toMatchObject({ status: 403, body: { error: 'share-stopped' } })
+    read.close()
+  })
+
+  it('[P0] refuses a read whose viewer no longer holds access, and leaves an admitted one reading', async () => {
+    // The grant is per viewer, exactly as the owner's ACL holds it, so one revocation is not another's.
+    const revoked = new Set<string>()
+    const { read, reads } = service({ admitted: (_shareId, actor) => !revoked.has(actor.subjectId) })
+
+    expect((await read.answer('share-1', listCall, viewer)).status).toBe(200)
+    expect(reads).toEqual(['/api/session/list'])
+
+    revoked.add(viewer.subjectId)
+    expect(await read.answer('share-1', listCall, viewer))
+      .toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+    expect(await read.answer('share-1', followOpen, viewer))
+      .toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+    // The verdict is about the viewer, not the share: nobody else's read is affected.
+    expect((await read.answer('share-1', listCall, otherViewer)).status).toBe(200)
+    read.close()
+  })
+
+  it('[P0] refuses a revoked viewer’s fork and child prompt, not just its reads', async () => {
+    // The write paths execute on the owner's machine, so one share state must decide them too: a viewer
+    // whose grant ended cannot still create a child or drive the one it made earlier.
+    const revoked = new Set<string>()
+    const { read } = service({
+      state: () => share({ allowsFork: true }),
+      admitted: (_shareId, actor) => !revoked.has(actor.subjectId),
+    })
+    const forkCall = promptEnvelope('session/fork', 'rpc-fork', 'session-1')
+    const promptCall = promptEnvelope('session/prompt', 'rpc-prompt', 'child-1')
+
+    revoked.add(viewer.subjectId)
+    expect(await read.answer('share-1', forkCall, viewer))
+      .toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+    expect(await read.answer('share-1', promptCall, viewer))
+      .toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+    // The verdict is about the viewer: this share's own state still serves the other one.
+    const other = await read.answer('share-1', forkCall, otherViewer)
+    expect(other.body).not.toMatchObject({ error: 'viewer-not-authorized' })
+    read.close()
+  })
+
+  it('refuses a fork and a child prompt on a share whose deadline passed', async () => {
+    const { read, reads } = service({ state: () => share({ allowsFork: true, expiresAt: '2026-09-01T00:00:00.000Z' }) })
+
+    expect(await read.answer('share-1', promptEnvelope('session/fork', 'rpc-fork', 'session-1'), viewer))
+      .toMatchObject({ status: 403, body: { error: 'share-expired' } })
+    expect(await read.answer('share-1', promptEnvelope('session/prompt', 'rpc-prompt', 'child-1'), viewer))
+      .toMatchObject({ status: 403, body: { error: 'share-expired' } })
+    // Neither write reached the owner's endpoint registry.
+    expect(reads).toEqual([])
+    read.close()
+  })
+
+  it('[P0] refuses the next poll of a stream whose viewer no longer holds access, and releases it', async () => {
+    let admitted = true
+    const { read, signals } = service({ admitted: () => admitted })
+    expect((await read.answer('share-1', followOpen, viewer)).status).toBe(200)
+
+    admitted = false
+    expect(await read.answer('share-1', { op: 'stream-next', id: 1 }, viewer))
+      .toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+    // The stream went with the refusal, upstream subscription included, so a page that re-opens instead
+    // of giving up reads the same verdict from the open rather than a fresh grant.
+    expect(signals[0]?.aborted).toBe(true)
+    expect(await read.answer('share-1', { op: 'stream-next', id: 1 }, viewer))
+      .toMatchObject({ status: 404, body: { error: 'stream-not-found' } })
+    expect(await read.answer('share-1', followOpen, viewer))
+      .toMatchObject({ status: 403, body: { error: 'viewer-not-authorized' } })
+    read.close()
+  })
+
+  it('[P0] releases only the revoked viewer’s own streams', async () => {
+    const { read, signals, readers } = service()
+    expect((await read.answer('share-1', { ...followOpen, id: 1 }, viewer)).status).toBe(200)
+    expect((await read.answer('share-1', { ...followOpen, id: 2 }, otherViewer)).status).toBe(200)
+
+    expect(read.closeViewerStreams('share-1', viewer)).toBe(1)
+    expect(signals[0]?.aborted).toBe(true)
+    expect(signals[1]?.aborted).toBe(false)
+    // The revoked viewer's Peer ends with its streams; the other viewer's Peer keeps serving it.
+    expect(readers.principalOf(0).actor).toEqual(viewer)
+    await vi.waitFor(() => { expect(readers.peers[0]?.signal.aborted).toBe(true) })
+    expect(readers.peers[1]?.signal.aborted).toBe(false)
+    // The viewer that kept its grant keeps reading, and the released id reports the loss it is.
+    expect((await read.answer('share-1', { op: 'stream-next', id: 2 }, otherViewer)).status).toBe(200)
+    expect(await read.answer('share-1', { op: 'stream-next', id: 1 }, viewer))
+      .toMatchObject({ status: 404, body: { error: 'stream-not-found' } })
+    read.close()
+  })
+
+  it('serves a live share to an admitted viewer exactly as before', async () => {
+    const { read, reads } = service({ admitted: () => true })
+
+    expect((await read.answer('share-1', listCall, viewer)).status).toBe(200)
+    expect((await read.answer('share-1', followOpen, viewer)).status).toBe(200)
+    expect(reads).toEqual(['/api/session/list'])
+    read.close()
+  })
+})
+
+/** One viewer fork call as the Connection sends it: a Typert envelope naming the Session it forks. */
+const forkEnvelope = (path: string, options: {
+  readonly rpcId?: string
+  readonly childSessionId?: string
+} = {}) => ({
+  op: 'call' as const,
+  path,
+  body: {
+    type: 'client-request',
+    ...(options.rpcId === undefined ? {} : { rpcId: options.rpcId }),
+    method: 'session/fork',
+    payload: {
+      args: {
+        request: {
+          requestId: 'fork-request',
+          sessionId: 'session-1',
+          ...(options.childSessionId === undefined ? {} : { childSessionId: options.childSessionId }),
+        },
+      },
+    },
+  },
+})
+
+describe('the fork request one viewer call is classified as', () => {
+  it('[P0] refuses a fork body naming a child when the request carries no bound identity', async () => {
+    const { read, reads } = service({ state: () => share({ allowsFork: true }) })
+
+    const answer = await read.answer(
+      'share-1',
+      forkEnvelope('/api/session/fork', { childSessionId: 'another-requests-child' }),
+      viewer,
+    )
+
+    // Without an rpcId or operationId the host cannot prove the retry created that child, so the body must
+    // not reach the owner's adoption path.
+    expect(answer).toMatchObject({
+      status: 403,
+      body: { error: 'fork-identity-required', message: 'naming a fork child requires an rpcId or operationId' },
+    })
+    expect(reads).toEqual([])
+    read.close()
+  })
+
+  it('[P0] classifies a dot-segment fork path and a query suffix as the fork request they are', async () => {
+    const { read, reads } = service({ state: () => share({ allowsFork: true }) })
+
+    for (const path of ['/api/session/./fork', '/api/session/fork?x=1']) {
+      // Only the fork decision answers with this code; reaching dispatch() would return the owner's answer
+      // and create the child without recording or confining it.
+      expect(await read.answer('share-1', forkEnvelope(path, { childSessionId: 'another-requests-child' }), viewer))
+        .toMatchObject({ status: 403, body: { error: 'fork-identity-required' } })
+    }
+    expect(reads).toEqual([])
+    read.close()
+  })
+
+  it('[P0] forwards a normalized fork path to the owner for a request that carries its own identity', async () => {
+    const { read, reads } = service({ state: () => share({ allowsFork: true }) })
+
+    const answer = await read.answer('share-1', forkEnvelope('/api/session/./fork?x=1', { rpcId: 'rpc-fork' }), viewer)
+
+    expect(answer.status).toBe(200)
+    // The owner's endpoint saw the normalized path, and the fork decision is what forwarded it.
+    expect(reads).toEqual(['/api/session/fork'])
+    read.close()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-reader-peer.spec.ts b/packages/experimental/liveshare/tests/viewer-reader-peer.spec.ts
new file mode 100644
index 0000000000..51fe200768
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-reader-peer.spec.ts
@@ -0,0 +1,137 @@
+/**
+ * One Peer per share and reader: the reader's calls and streams speak for it, and revocation, a re-check
+ * that refuses the reader, and the share's end dispose it. Disposal settles asynchronously, so the Peer's
+ * signal is awaited; the reader table forgets the Peer at once, so the next admitted request gets a new one.
+ */
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import { createViewerReadService, type ViewerReadGateway } from '../src/host/viewer-read.ts'
+import { READER, readerConnection, type ReaderFetch } from './viewer-read-peers.ts'
+
+const OTHER = { ...READER, subjectId: 'ou_other' }
+
+const listCall = (rpcId: string) => ({ op: 'call' as const, path: '/api/session/list', body: {
+  type: 'client-request', rpcId, method: 'session/list', payload: { args: { request: {} } },
+} })
+const followOpen = (id: number) => ({ op: 'stream-open' as const, id, endpoint: 'session/follow', payload: {
+  args: { request: { address: { kind: 'session', sessionId: 'source' } } },
+} })
+
+/** A gateway whose streams yield until their signal or their Peer ends. */
+function streamingGateway(): { readonly gateway: ViewerReadGateway; readonly opened: PeerScope[] } {
+  const opened: PeerScope[] = []
+  const gateway: ViewerReadGateway = {
+    wireStream: {
+      open: (_endpoint, _payload, _uplink, peer, signal) => {
+        opened.push(peer)
+        return Promise.resolve((async function* () {
+          while (!signal.aborted && !peer.signal.aborted) {
+            await new Promise((resolve) => { setTimeout(resolve, 5) })
+            yield { type: 'event' }
+          }
+        })())
+      },
+      failure: error => ({ code: String(error), message: String(error), details: {} }),
+    },
+  }
+  return { gateway, opened }
+}
+
+function reader(fetch?: ReaderFetch, admitted: (subjectId: string) => boolean = () => true) {
+  const peers = readerConnection(fetch ?? ((_request, peer) => Promise.resolve(Response.json({
+    type: 'server-response', rpcId: 'r', result: { ok: true, value: { items: [], principal: peer.principal } },
+  }))))
+  onTestFinished(() => peers.dispose())
+  const { gateway, opened } = streamingGateway()
+  const read = createViewerReadService({
+    connection: peers.connection,
+    gateway,
+    sharedSessionId: () => 'source',
+    viewerStillAdmitted: (_shareId, actor) => admitted(actor.subjectId),
+  })
+  onTestFinished(() => { read.close() })
+  return { read, peers, opened }
+}
+
+describe('reader Peers', () => {
+  it('dispatches every call and stream of one reader through one share-viewer Peer', async () => {
+    const { read, peers, opened } = reader()
+    expect(await read.answer('share', listCall('a'), READER)).toMatchObject({ status: 200 })
+    expect(await read.answer('share', followOpen(1), READER)).toEqual({ status: 200, body: { opened: true } })
+    expect(await read.answer('share', listCall('b'), OTHER)).toMatchObject({ status: 200 })
+    expect(peers.peers).toHaveLength(2)
+    expect(peers.principalOf(0)).toEqual({ kind: 'share-viewer', shareId: 'share', actor: READER })
+    expect(peers.principalOf(1)).toEqual({ kind: 'share-viewer', shareId: 'share', actor: OTHER })
+    expect(opened).toEqual([peers.peers[0]])
+  })
+
+  it('keeps one share’s reader apart from the same reader of another share', async () => {
+    const { read, peers } = reader()
+    await read.answer('share', listCall('a'), READER)
+    await read.answer('other-share', listCall('b'), READER)
+    expect(peers.peers.map(peer => peer.principal)).toEqual([
+      { kind: 'share-viewer', shareId: 'share', actor: READER },
+      { kind: 'share-viewer', shareId: 'other-share', actor: READER },
+    ])
+  })
+
+  it('disposes only the revoked reader’s Peer and ends that reader’s streams', async () => {
+    const { read, peers } = reader()
+    await read.answer('share', followOpen(1), READER)
+    await read.answer('share', followOpen(2), OTHER)
+    expect(read.closeViewerStreams('share', READER)).toBe(1)
+    await vi.waitFor(() => { expect(peers.peers[0]?.signal.aborted).toBe(true) })
+    expect(peers.peers[1]?.signal.aborted).toBe(false)
+    expect(await read.answer('share', { op: 'stream-next', id: 1 }, READER))
+      .toEqual({ status: 404, body: { error: 'stream-not-found' } })
+    expect(await read.answer('share', { op: 'stream-next', id: 2 }, OTHER)).toMatchObject({ status: 200 })
+  })
+
+  it('disposes every Peer of an ended share and gives a re-admitted reader a new one', async () => {
+    const { read, peers } = reader()
+    await read.answer('share', listCall('a'), READER)
+    await read.answer('share', listCall('b'), OTHER)
+    read.closeShare('share')
+    await vi.waitFor(() => { expect(peers.peers.map(peer => peer.signal.aborted)).toEqual([true, true]) })
+    await read.answer('share', listCall('c'), READER)
+    expect(peers.peers).toHaveLength(3)
+    expect(peers.peers[2]?.signal.aborted).toBe(false)
+    expect(peers.principalOf(2)).toEqual({ kind: 'share-viewer', shareId: 'share', actor: READER })
+  })
+
+  it('disposes the Peers of readers that lost admission when the share is re-checked', async () => {
+    let revoked = ''
+    const { read, peers } = reader(undefined, subjectId => subjectId !== revoked)
+    await read.answer('share', listCall('a'), READER)
+    await read.answer('share', listCall('b'), OTHER)
+    revoked = OTHER.subjectId
+    read.recheckAdmission('share')
+    await vi.waitFor(() => { expect(peers.peers.map(peer => peer.signal.aborted)).toEqual([false, true]) })
+  })
+
+  it('aborts a revoked reader’s call in flight and disposes the Peer it spoke for', async () => {
+    let admitted = true
+    const entered = Promise.withResolvers<PeerScope>()
+    const release = Promise.withResolvers<undefined>()
+    onTestFinished(() => { release.resolve(undefined) })
+    const { read, peers } = reader(async (request, peer) => {
+      entered.resolve(peer)
+      await release.promise
+      request.signal.throwIfAborted()
+      return Response.json({})
+    }, () => admitted)
+    const answer = read.answer('share', listCall('late'), READER)
+    const rejected = expect(answer).rejects.toThrow('Viewer access ended')
+    const peer = await entered.promise
+    admitted = false
+    read.closeViewerStreams('share', READER)
+    await vi.waitFor(() => { expect(peer.signal.aborted).toBe(true) })
+    release.resolve(undefined)
+    await rejected
+    // The reader is admitted again later: its next call speaks for a new Peer.
+    admitted = true
+    await read.answer('share', listCall('again'), READER)
+    expect(peers.peers).toHaveLength(2)
+    expect(peers.peers[1]?.signal.aborted).toBe(false)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-reason.client.spec.ts b/packages/experimental/liveshare/tests/viewer-reason.client.spec.ts
new file mode 100644
index 0000000000..d2172f3cee
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-reason.client.spec.ts
@@ -0,0 +1,91 @@
+// @vitest-environment jsdom
+/** The copy a viewer page states for the reason code its share's abilities carry. */
+
+import { Context } from '@deepseek-ai/cordis'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { describe, expect, it } from 'vitest'
+import {
+  en, NS, viewerReasonText, viewerRefusalText, zh, type LiveshareKey,
+} from '../src/client/locales.ts'
+
+// The page's copy comes from the client locale seat, the same one the owner's dialogs use, so the
+// reader's chosen language decides it. Bind it the way the served page's client tree does.
+const locale = new LocaleRuntime(new Context())
+locale.register(NS, { zh, en })
+locale.setLocale('zh')
+const t = locale.bind(NS)
+
+describe('viewer reason copy', () => {
+  it('states a known reason code in the reader\'s language', () => {
+    expect(viewerReasonText(t, 'share-stopped')).toBe(zh['viewer.reason.share-stopped'])
+    expect(viewerReasonText(t, 'fork-not-permitted')).toBe(zh['viewer.reason.fork-not-permitted'])
+    // The reader's own language wins over the browser's: a language chosen in Settings decides.
+    locale.setLocale('en')
+    expect(viewerReasonText(t, 'share-stopped')).toBe(en['viewer.reason.share-stopped'])
+    locale.setLocale('zh')
+  })
+
+  it('states a branch the Host created without limits as unusable, and a reused request as no branch', () => {
+    // The Host made the child but could not install its read-only limits: the reader is told the branch
+    // exists and cannot be used, never that nothing was created and never that it can be driven.
+    expect(viewerReasonText(t, 'fork-enforcement-failed'))
+      .toBe('分支会话已创建，但沙箱限制安装失败，无法使用')
+    // One request naming a prefix its earlier request did not is refused instead of making a second
+    // child, so the reader is told no new Session came out of it.
+    expect(viewerReasonText(t, 'fork-operation-conflict'))
+      .toBe('这次分支请求指定的前缀与之前那次不同，未再新建会话')
+    // The branch the reader already owns stayed where it was; what failed is the Host's preparation of
+    // it, and the same code answers a prompt into that branch and a stop of it, so the copy names the
+    // action the reader asked for rather than a message in particular.
+    expect(viewerReasonText(t, 'fork-prepare-failed'))
+      .toBe('Host 未能准备好此分支，本次操作没有执行')
+    // The two refusals a source write comes back with: the owner's share no longer allows writing it,
+    // and the Host cannot confine it. Neither states what became of the request, because the Host
+    // re-checks both after the dispatch — a refusal here is not a rollback.
+    expect(viewerReasonText(t, 'share-not-writable')).toBe('分享者已不允许写入此会话')
+    expect(viewerReasonText(t, 'source-write-unavailable'))
+      .toBe('此 Host 未能限制共享会话的执行，因此无法驱动它')
+  })
+
+  it('states the reason it knows with the stable code, and never the Host\u2019s own words', () => {
+    // The page states its own reason for a code it knows, with that code beside it so a reader can
+    // quote what was refused.
+    expect(viewerRefusalText(t, 'fork-not-permitted')).toBe('分享者未允许分支此会话 (fork-not-permitted)')
+    expect(viewerRefusalText(t, 'fork-prepare-failed'))
+      .toBe('Host 未能准备好此分支，本次操作没有执行 (fork-prepare-failed)')
+    // The composer's own draft and the Stop it offers come back with these two codes, so both are
+    // stated the same way: this page's reason with the Host's stable code beside it.
+    expect(viewerRefusalText(t, 'share-not-writable'))
+      .toBe('分享者已不允许写入此会话 (share-not-writable)')
+    expect(viewerRefusalText(t, 'source-write-unavailable'))
+      .toBe('此 Host 未能限制共享会话的执行，因此无法驱动它 (source-write-unavailable)')
+  })
+
+  it('states no refusal for a code it does not know', () => {
+    // The Host's message and code stay the surface's fallback for every code this page cannot state.
+    expect(viewerRefusalText(t, 'share-suspended-by-policy')).toBeUndefined()
+  })
+
+  it('names both languages for every reason code the page maps', () => {
+    const keys = Object.keys(zh).filter(key => key.startsWith('viewer.reason.'))
+    expect(keys.length).toBeGreaterThan(0)
+    for (const language of ['zh', 'en'] as const) {
+      locale.setLocale(language)
+      const dictionary: Readonly<Record<string, string>> = language === 'zh' ? zh : en
+      for (const key of keys) {
+        const code = key.slice('viewer.reason.'.length)
+        expect(viewerReasonText(t, code), `${language} ${code}`)
+          .toBe(dictionary[key as LiveshareKey])
+        expect(zh[key as LiveshareKey]).toBeTruthy()
+        expect(en[key as LiveshareKey]).toBeTruthy()
+      }
+    }
+    locale.setLocale('zh')
+  })
+
+  it('states a code it does not know instead of inventing copy', () => {
+    // The owner host and the Relay own the reason vocabulary: a code from a newer owner reaches the
+    // reader unchanged, which is how the page reports a reason it was told and cannot translate.
+    expect(viewerReasonText(t, 'share-suspended-by-policy')).toBe('share-suspended-by-policy')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-relay.client.ts b/packages/experimental/liveshare/tests/viewer-relay.client.ts
new file mode 100644
index 0000000000..571bc32fa6
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-relay.client.ts
@@ -0,0 +1,150 @@
+/**
+ * Stand-in Relay for the assembled viewer page tests: the page's read channel answered from a scripted owner.
+ *
+ * The assembled page reads its share the way a served page does — one request per read posted to the
+ * Relay's read channel, which forwards it unread and writes the owner's answer back. This module
+ * answers that channel in the test process, so the page under test keeps its real carrier, its
+ * real envelopes, and its real polling, while the owner behind it stays the scripted mock.
+ *
+ * @module @deepseek-ai/dsh-experimental-liveshare/tests/viewer-relay
+ */
+
+import { vi } from 'vitest'
+import type { ClientConnectionRpc } from '@deepseek-ai/dsh-client-connection/client'
+import type { ViewerRequest, ViewerStreamValue } from '../src/viewer-channel.ts'
+
+/** Path the viewer page posts every read to. */
+const READ_CHANNEL = '/__share/rpc'
+
+/** One client request envelope as the page's HTTP caller writes it. */
+interface ClientRequestBody {
+  readonly rpcId?: unknown
+  readonly method?: unknown
+  readonly payload?: unknown
+}
+
+/** One open read, kept until its consumer releases it or the scripted owner ends it. */
+interface OpenRead {
+  readonly controller: AbortController
+  readonly iterator: AsyncIterator<unknown>
+}
+
+/** Abort and await the Owner generator's finally block before releasing its subscription. */
+async function closeRead(stream: OpenRead): Promise<void> {
+  stream.controller.abort()
+  await stream.iterator.return?.()
+}
+
+/** Owner the page's reads are answered from, and the answers for the page's requests outside the read channel. */
+export interface ViewerRelayOptions {
+  /** In-memory carrier answering every read; a case that reads a share supplies one. */
+  readonly owner?: ClientConnectionRpc
+  /** Answers for the page's requests outside the read channel: the share context and the health probe. */
+  readonly other?: (url: string) => Promise<Response>
+}
+
+/**
+ * Answer one read the way the owner behind the Relay would.
+ * @param owner - Scripted owner transport.
+ * @param streams - Open reads this page holds, keyed by the id the page minted.
+ * @param request - One validated request the page posted.
+ * @returns The Relay's HTTP answer, whose body is the owner's own answer.
+ */
+async function answerRead(
+  owner: ClientConnectionRpc,
+  streams: Map<number, OpenRead>,
+  request: ViewerRequest,
+): Promise<Response> {
+  switch (request.op) {
+    case 'call': {
+      const body = request.body as ClientRequestBody | undefined
+      const endpoint = typeof body?.method === 'string'
+        ? body.method
+        : request.path.replace(/^\/api\//u, '')
+      const result = await owner.call('/api', endpoint, body?.payload)
+      return Response.json({
+        type: 'server-response',
+        rpcId: typeof body?.rpcId === 'string' ? body.rpcId : '',
+        result,
+      })
+    }
+    case 'stream-open': {
+      const open = owner.open
+      if (open === undefined) throw new Error('viewer relay: the scripted owner opens no stream')
+      const controller = new AbortController()
+      // Yield before running the script: RemoteMock runs it synchronously, and a script that pushes
+      // its opening frame recurses into the page's own consumer, so it must start from a fresh stack.
+      await Promise.resolve()
+      const iterable = open('/api', request.endpoint, request.payload, controller.signal)
+      streams.set(request.id, { controller, iterator: iterable[Symbol.asyncIterator]() })
+      return Response.json({})
+    }
+    case 'stream-next': {
+      const stream = streams.get(request.id)
+      if (stream === undefined) throw new Error(`viewer relay: no open read ${String(request.id)}`)
+      const step = await stream.iterator.next()
+      if (step.done === true) {
+        streams.delete(request.id)
+        return Response.json({ end: true } satisfies ViewerStreamValue)
+      }
+      return Response.json({ value: step.value } satisfies ViewerStreamValue)
+    }
+    case 'stream-cancel': {
+      const stream = streams.get(request.id)
+      streams.delete(request.id)
+      if (stream !== undefined) await closeRead(stream)
+      return Response.json({})
+    }
+    case 'asset':
+      // The assembled page boots in-process; it reads no served-page resource through the channel.
+      throw new Error(`viewer relay: unexpected page asset read ${request.path}`)
+    default: {
+      const unreachable: never = request
+      throw new Error(`viewer relay: unknown read ${JSON.stringify(unreachable)}`)
+    }
+  }
+}
+
+/**
+ * Install the stand-in Relay as the page's \`fetch\`, so the assembled viewer page reads a scripted
+ * share through its own carrier instead of a fixture carried inside the page.
+ *
+ * @param options - Scripted owner and the answers for the page's other requests.
+ * @returns Async disposer closing Owner streams and restoring this fixture's fetch and font globals.
+ */
+export function installViewerRelay(options: ViewerRelayOptions = {}): () => Promise<void> {
+  const { owner } = options
+  const streams = new Map<number, OpenRead>()
+  const pending = new Set<Promise<Response>>()
+  const fetchDescriptor = Object.getOwnPropertyDescriptor(globalThis, 'fetch')
+  const fontsDescriptor = Object.getOwnPropertyDescriptor(document, 'fonts')
+  const ownsFonts = document.fonts === undefined
+  if (ownsFonts) Object.defineProperty(document, 'fonts', { configurable: true, value: new EventTarget() })
+  let disposed = false
+  const fetch = vi.fn(async (input: unknown, init?: RequestInit): Promise<Response> => {
+    const url = String(input)
+    if (!url.includes(READ_CHANNEL)) {
+      if (options.other === undefined) throw new Error(`viewer relay: unexpected request ${url}`)
+      return await options.other(url)
+    }
+    if (owner === undefined) throw new Error(`viewer relay: no scripted owner for ${url}`)
+    const request = JSON.parse(typeof init?.body === 'string' ? init.body : '') as ViewerRequest
+    if (disposed) throw new Error('viewer relay: request after disposal')
+    const answer = answerRead(owner, streams, request)
+    pending.add(answer)
+    try { return await answer } finally { pending.delete(answer) }
+  })
+  vi.stubGlobal('fetch', fetch)
+  return async () => {
+    disposed = true
+    await Promise.all([...streams.values()].map(closeRead))
+    await Promise.all([...pending])
+    streams.clear()
+    if (fetchDescriptor === undefined) Reflect.deleteProperty(globalThis, 'fetch')
+    else Object.defineProperty(globalThis, 'fetch', fetchDescriptor)
+    if (ownsFonts) {
+      if (fontsDescriptor === undefined) Reflect.deleteProperty(document, 'fonts')
+      else Object.defineProperty(document, 'fonts', fontsDescriptor)
+    }
+  }
+}
diff --git a/packages/experimental/liveshare/tests/viewer-remote-faces.ts b/packages/experimental/liveshare/tests/viewer-remote-faces.ts
new file mode 100644
index 0000000000..8d85fa9497
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-remote-faces.ts
@@ -0,0 +1,42 @@
+/**
+ * Test-only generation of every Host package's `./remote` face from source, for the assembled viewer
+ * page: the CI coverage lane runs no workspace build, so the `lib/typert.remote-client.js` each face
+ * names does not exist there.
+ */
+
+import { readFileSync, writeFileSync } from 'node:fs'
+import { join, relative, sep } from 'node:path'
+import { WorkspaceTypertGenerator } from '../../../typert/generator/src/index.ts'
+
+/**
+ * Write each Host package's generated Remote face into `dir`.
+ * @param workspaceRoot - Repository root the generator discovers packages under.
+ * @param dir - Staging directory the face modules are written to.
+ * @returns Face module paths by package name.
+ */
+export function generateViewerRemoteFaces(workspaceRoot: string, dir: string): ReadonlyMap<string, string> {
+  const generator = new WorkspaceTypertGenerator(workspaceRoot, { checkDiagnostics: false })
+  const packages = generator.discover(['host'])
+    .filter((candidate) => {
+      const manifest = JSON.parse(readFileSync(join(workspaceRoot, candidate.root, 'package.json'), 'utf8')) as {
+        readonly exports?: Record<string, unknown>
+      }
+      return manifest.exports !== undefined && Object.hasOwn(manifest.exports, './remote')
+    })
+    .map(candidate => candidate.package)
+  const faces = new Map<string, string>()
+  // Generated faces use the current source factory without requiring built workspace artifacts.
+  const factoryPath = relative(dir, join(workspaceRoot, 'packages/typert/protocol/src/remote-info.ts')).split(sep).join('/')
+  const factorySpecifier = factoryPath.startsWith('.') ? factoryPath : `./${factoryPath}`
+  for (const artifact of generator.generate(packages, ['host'])) {
+    if (artifact.remote === undefined) continue
+    const file = join(dir, `${artifact.package.replaceAll('/', '__')}.js`)
+    const source = artifact.remote.js.replace(
+      /from (['"])@deepseek-ai\/dsh-typert-protocol\/remote-info\1/g,
+      `from ${JSON.stringify(factorySpecifier)}`,
+    )
+    writeFileSync(file, source)
+    faces.set(artifact.package, file)
+  }
+  return faces
+}
diff --git a/packages/experimental/liveshare/tests/viewer-seat-registration.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-seat-registration.client.spec.tsx
new file mode 100644
index 0000000000..01298c9b52
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-seat-registration.client.spec.tsx
@@ -0,0 +1,215 @@
+// @vitest-environment jsdom
+/**
+ * The viewer's read-only composer seats replace the shipped seats instead of colliding with them.
+ *
+ * A single slot renders its lowest-ranked live entry and throws when a second registration repeats an
+ * occupied rank. A served viewer page mounts the owner's own plugins, so the shipped permission and
+ * model controls are already registered at the default rank; the viewer seats must register below
+ * that rank to become the rendered entry. Mounting them at the shipped rank is the failure this
+ * suite pins: the registration conflict leaves the viewer entry unregistered, so the shipped control
+ * keeps rendering.
+ */
+
+import type { Context as ClientContext } from '@deepseek-ai/cordis'
+import { Context } from '@deepseek-ai/cordis'
+import type { SessionReference } from '@deepseek-ai/dsh-api-session-controller/client'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { SlotRegistry } from '@deepseek-ai/dsh-client-ui-renderer/client'
+import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { afterEach, describe, expect, it, onTestFinished } from 'vitest'
+import { act, cleanup, waitFor } from '@testing-library/react'
+import { en, NS, zh } from '../src/client/locales.ts'
+import * as viewerModel from '../src/client/viewer-model.tsx'
+import * as viewerPermission from '../src/client/viewer-permission.tsx'
+import { VIEWER_SEAT_PRIORITY } from '../src/client/viewer-seat.tsx'
+
+afterEach(cleanup)
+
+/** The advisory catalog one Host serves for the Session the seat states. */
+const CATALOG = {
+  default: { provider: 'internal', model: 'dsv41f' },
+  groups: [{
+    id: 'internal',
+    models: [{
+      id: 'dsv41f',
+      name: '内网 DSV41F',
+      reasoning: {
+        efforts: [{ id: 'low', name: '低强度' }, { id: 'high', name: '高强度' }],
+        defaultEffort: 'low',
+      },
+    }],
+  }],
+}
+
+/** The Session's durable selection fold: the model the next request would use. */
+const SELECTION = {
+  lastUsed: null,
+  next: { provider: 'internal', model: 'dsv41f', reasoningEffort: 'high' },
+}
+
+/**
+ * A runtime whose declared composer slots the shipped plugins can fill at their default rank, ready
+ * for the viewer plugins to mount over them.
+ * @param options - Whether the Host answers its model catalog.
+ * @returns The runtime, the Session reference the rendered seats receive, and the shipped-seat mount.
+ */
+async function bench(options: { readonly catalogReadable?: boolean } = {}) {
+  const runtime = await SlotTestRuntime.create()
+  onTestFinished(() => runtime.dispose())
+  let catalogReads = 0
+  const locale = new LocaleRuntime(runtime.ctx)
+  locale.register(NS, { en, zh })
+  locale.setLocale('zh')
+  runtime.ctx.provide('locale', locale)
+  runtime.slots.installLocale(locale)
+  runtime.remote.provideNamespaces({
+    session: {
+      modelCatalog: () => {
+        catalogReads += 1
+        return Promise.resolve(options.catalogReadable === false
+          ? { ok: false, value: {} }
+          : { ok: true, value: CATALOG })
+      },
+    },
+  })
+  const sessionId = await runtime.sessions.add({ id: 'viewer-seat' })
+  await runtime.sessions.setProjection(sessionId, 'modelSelection', SELECTION)
+  const session = runtime.sessions.retainFor(runtime.ctx, sessionId)
+  await runtime.declare({
+    'conversation.input.permission': { kind: 'single', scope: 'session' },
+    'conversation.input.model': { kind: 'single', scope: 'session' },
+  })
+  // The shipped seats register one entry per slot at the default rank, exactly as their plugins do.
+  const mountShipped = async (): Promise<void> => {
+    await runtime.mount({
+      inject: ['slots'],
+      apply(ctx: ClientContext) {
+        ctx.slots.register({ name: 'conversation.input.permission' }, () => <span data-shipped="permission">shipped permission</span>)
+        ctx.slots.register({ name: 'conversation.input.model' }, () => <span data-shipped="model">shipped model</span>)
+      },
+    })
+  }
+  return { runtime, session, mountShipped, catalogReads: () => catalogReads }
+}
+
+/**
+ * Record every registration crash the slot ledger reports.
+ * @param runtime - the bench runtime.
+ * @returns the live record and its unsubscribe.
+ */
+function watchEntryErrors(runtime: SlotTestRuntime) {
+  const entryErrors: { key: string; message: string }[] = []
+  const stop = runtime.slots.onEntryError((key, _registration, error) => {
+    entryErrors.push({ key, message: error instanceof Error ? error.message : String(error) })
+  })
+  return { entryErrors, stop }
+}
+
+/**
+ * Render both composer seats the viewer states.
+ * @param runtime - the bench runtime.
+ * @param session - the Session reference the rendered seats receive.
+ * @returns Both rendered slot views.
+ */
+function renderSeats(runtime: SlotTestRuntime, session: SessionReference) {
+  const permission = runtime.renderSlot('conversation.input.permission', { locked: false }, { session })
+  const model = runtime.renderSlot('conversation.input.model', { locked: false }, { session })
+  return { permission, model }
+}
+
+/** Both seats' ranks as the ledger holds them, defaulted the way the registry ranks a missing option. */
+function seatRanks(runtime: SlotTestRuntime, name: 'conversation.input.permission' | 'conversation.input.model'): number[] {
+  return runtime.slots.entries(name).map(entry => entry.options.priority ?? 0)
+}
+
+describe('viewer seat registration', () => {
+  it('mounts both viewer seats over the shipped seats and renders the viewer entries', async () => {
+    const { runtime, session, mountShipped } = await bench()
+    const { entryErrors, stop } = watchEntryErrors(runtime)
+    // Mounting must not report a single-slot conflict: the viewer entry is a lower rank, not a second occupant.
+    await mountShipped()
+    const permissionHandle = await runtime.mount(viewerPermission)
+    const modelHandle = await runtime.mount(viewerModel)
+    expect(entryErrors).toEqual([])
+
+    const { permission, model } = renderSeats(runtime, session)
+    expect(permission.container.querySelector('[data-liveshare-viewer-seat="permission"]')).not.toBeNull()
+    expect(permission.container.querySelector('[data-shipped="permission"]')).toBeNull()
+    expect(permission.container.textContent).toContain(zh['viewer.permission.locked'])
+    expect(model.container.querySelector('[data-liveshare-viewer-seat="model"]')).not.toBeNull()
+    expect(model.container.querySelector('[data-shipped="model"]')).toBeNull()
+    // The viewer's own copy states the restriction; the shipped control has none.
+    expect(model.container.textContent).toContain(zh['viewer.model.locked'])
+
+    // Both entries stay on the ledger: the viewer entry is the lower one, the shipped entry is shadowed.
+    expect(seatRanks(runtime, 'conversation.input.permission')).toEqual([VIEWER_SEAT_PRIORITY, 0])
+    expect(seatRanks(runtime, 'conversation.input.model')).toEqual([VIEWER_SEAT_PRIORITY, 0])
+
+    // A viewer unload restores the shipped control: the shadow was a registration, not a removal.
+    await permissionHandle.dispose()
+    await modelHandle.dispose()
+    expect(await permission.view.findByText('shipped permission')).toBeTruthy()
+    expect(await model.view.findByText('shipped model')).toBeTruthy()
+    stop()
+  })
+
+  it('keeps the viewer entries when the viewer page mounts them before the shipped seats', async () => {
+    const { runtime, session, mountShipped } = await bench()
+    const { entryErrors, stop } = watchEntryErrors(runtime)
+    // The served page loads the owner's plugins in its own order; the shadow rank must hold either way.
+    await runtime.mount(viewerPermission)
+    await runtime.mount(viewerModel)
+    await mountShipped()
+    expect(entryErrors).toEqual([])
+    expect(seatRanks(runtime, 'conversation.input.permission')).toEqual([VIEWER_SEAT_PRIORITY, 0])
+    expect(seatRanks(runtime, 'conversation.input.model')).toEqual([VIEWER_SEAT_PRIORITY, 0])
+
+    const { permission, model } = renderSeats(runtime, session)
+    expect(permission.container.querySelector('[data-liveshare-viewer-seat="permission"]')).not.toBeNull()
+    expect(model.container.querySelector('[data-liveshare-viewer-seat="model"]')).not.toBeNull()
+    stop()
+  })
+
+  it('states the Session’s own route when the Host cannot answer its model catalog', async () => {
+    const { runtime, session, catalogReads } = await bench({ catalogReadable: false })
+    await runtime.mount(viewerModel)
+
+    const { model } = renderSeats(runtime, session)
+    // The seat reads the catalog once it is mounted; the answer is unreadable, so its display names
+    // never arrive.
+    await act(async () => {})
+    expect((await model.view.findByText(/dsv41f/)).textContent).toBe('dsv41f · high')
+    // The catalog's display names are an adornment: a Host that cannot answer leaves the route and
+    // the Session's own effort stated rather than an empty seat.
+    await waitFor(() => { expect(catalogReads()).toBe(1) })
+    expect(model.container.textContent).toContain('dsv41f · high')
+  })
+})
+
+describe('single-slot shadow rank', () => {
+  it('pins the shipped-rank failure the viewer seats must not repeat', async () => {
+    const ctx = new Context()
+    const fiber = ctx.plugin(SlotRegistry)
+    await fiber.await()
+    const slots = ctx.get('slots') as SlotRegistry
+    slots.register({
+      name: 'root',
+      children: { 'conversation.input.permission': { kind: 'single', scope: 'session' } },
+    } as never, () => null)
+    slots.register({ name: 'conversation.input.permission' } as never, () => null)
+    let conflict: Error | undefined
+    try {
+      slots.register({ name: 'conversation.input.permission' } as never, () => null)
+    } catch (error: unknown) {
+      conflict = error as Error
+    }
+    expect(conflict?.message).toContain('single slot "conversation.input.permission" already has a registration at priority 0')
+    expect(conflict?.message).toContain('register at a different priority to shadow it (lowest renders)')
+    await fiber.dispose()
+  })
+
+  it('states the rank every shipped seat is replaced from', () => {
+    // The shipped seats register at the default rank; the shadow rank must stay below it.
+    expect(VIEWER_SEAT_PRIORITY).toBeLessThan(0)
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-seat.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-seat.client.spec.tsx
new file mode 100644
index 0000000000..b2d11f4a0c
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-seat.client.spec.tsx
@@ -0,0 +1,203 @@
+// @vitest-environment jsdom
+/**
+ * The viewer's read-only seats: the Session's model and reasoning effort, and the share's tier.
+ *
+ * A viewer page states facts about the Session the owner shared. Each seat is a label with visible
+ * copy, no control a reader can operate, and no request behind a click; the same components render
+ * the selectable form when their `readOnly` switch is off, which is the wiring point for a future
+ * grant.
+ */
+
+import { Context } from '@deepseek-ai/cordis'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { ViewerModelSeat } from '../src/client/viewer-model.tsx'
+import { ViewerPermissionSeat } from '../src/client/viewer-permission.tsx'
+import { ViewerSeat } from '../src/client/viewer-seat.tsx'
+import { viewerCapabilities } from '../src/client/viewer-capabilities.ts'
+import { en, NS, zh } from '../src/client/locales.ts'
+
+// The seats read their copy through the locale seat the served page's client tree provides.
+const locale = new LocaleRuntime(new Context())
+locale.register(NS, { zh, en })
+locale.setLocale('zh')
+const t = locale.bind(NS)
+
+afterEach(() => {
+  cleanup()
+  vi.unstubAllGlobals()
+  viewerCapabilities.set({ mode: 'view' })
+})
+
+/** One observable store in the shape the seats read. */
+function observed<T>(initial: T) {
+  let snapshot = initial
+  const listeners = new Set<() => void>()
+  return {
+    getSnapshot: () => snapshot,
+    subscribe: (listener: () => void) => { listeners.add(listener); return () => { listeners.delete(listener) } },
+    set: (next: T) => { snapshot = next; for (const listener of listeners) listener() },
+  }
+}
+
+/** The catalog one Host serves: a named route with two effort levels and a default. */
+const catalog = {
+  default: { provider: 'internal', model: 'dsv41f' },
+  groups: [{
+    id: 'internal',
+    models: [{
+      id: 'dsv41f',
+      name: '内网 DSV41F',
+      reasoning: {
+        efforts: [{ id: 'low', name: '低强度' }, { id: 'high', name: '高强度' }],
+        defaultEffort: 'low',
+      },
+    }],
+  }],
+}
+
+describe('viewer model seat', () => {
+  it('states the model and the effort, with no control and no request', async () => {
+    const fetcher = vi.fn()
+    vi.stubGlobal('fetch', fetcher)
+    render(
+      <ViewerModelSeat t={t}
+        locked
+        selection={observed({ lastUsed: null, next: { provider: 'internal', model: 'dsv41f', reasoningEffort: 'high' } })}
+        catalog={() => Promise.resolve(catalog)}
+      />,
+    )
+
+    const seat = await screen.findByText(/内网 DSV41F/)
+    expect(seat.textContent).toBe('内网 DSV41F · 高强度')
+    // The restriction is visible copy, not only the tooltip.
+    expect(document.body.textContent).toContain(zh['viewer.model.locked'])
+    const element = document.querySelector('[data-liveshare-viewer-seat="model"]')
+    expect(element?.tagName).toBe('SPAN')
+    expect(element?.getAttribute('aria-disabled')).toBe('true')
+    expect(element?.querySelector('button, select, input, [role="button"], [role="combobox"], [tabindex]')).toBeNull()
+    fireEvent.click(element as HTMLElement)
+    // Nothing in this seat reaches the Host: no selection call, no fetch at all.
+    expect(fetcher).not.toHaveBeenCalled()
+  })
+
+  it('states the provider default effort for a Session that chose none', async () => {
+    render(
+      <ViewerModelSeat t={t}
+        locked
+        selection={observed({ lastUsed: null, next: { provider: 'internal', model: 'dsv41f' } })}
+        catalog={() => Promise.resolve(catalog)}
+      />,
+    )
+
+    expect((await screen.findByText(/内网 DSV41F/)).textContent).toBe('内网 DSV41F · 低强度')
+  })
+
+  it('states the raw effort id when the catalog names no level, and no effort when nothing states one', async () => {
+    const { unmount } = render(
+      <ViewerModelSeat t={t}
+        locked
+        selection={observed({ lastUsed: null, next: { provider: 'internal', model: 'dsv41f', reasoningEffort: 'future' } })}
+        catalog={() => Promise.resolve(catalog)}
+      />,
+    )
+    expect((await screen.findByText(/内网 DSV41F/)).textContent).toBe('内网 DSV41F · future')
+    unmount()
+
+    render(
+      <ViewerModelSeat t={t}
+        locked
+        selection={observed({ lastUsed: null, next: { provider: 'internal', model: 'unknown-route' } })}
+        catalog={() => Promise.resolve(catalog)}
+      />,
+    )
+    // No effort is invented for a route the catalog does not describe.
+    expect((await screen.findByText('unknown-route')).textContent).toBe('unknown-route')
+  })
+
+  it('states a model whose catalog entry carries no reasoning metadata by its display name alone', async () => {
+    render(
+      <ViewerModelSeat t={t}
+        locked
+        selection={observed({ lastUsed: null, next: { provider: 'internal', model: 'plain' } })}
+        catalog={() => Promise.resolve({
+          default: { provider: 'internal', model: 'plain' },
+          groups: [{ id: 'internal', models: [{ id: 'plain', name: 'Plain model' }] }],
+        })}
+      />,
+    )
+
+    expect((await screen.findByText('Plain model')).textContent).toBe('Plain model')
+  })
+
+  it('states the Session’s own route when the catalog read fails outright', async () => {
+    render(
+      <ViewerModelSeat t={t}
+        locked
+        selection={observed({ lastUsed: null, next: { provider: 'internal', model: 'dsv41f', reasoningEffort: 'high' } })}
+        catalog={() => Promise.reject(new Error('catalog unavailable'))}
+      />,
+    )
+
+    // A failed read is not a reason to hide the Session's model: the route it states stays stated.
+    expect((await screen.findByText(/dsv41f/)).textContent).toBe('dsv41f · high')
+  })
+
+  it('states no model while neither the Session nor the Host catalog names one', async () => {
+    const { container } = render(
+      <ViewerModelSeat t={t} locked selection={undefined} catalog={() => Promise.resolve(undefined)} />,
+    )
+
+    // The effect settles with no catalog, and a Session that states no model leaves the seat empty.
+    await waitFor(() => { expect(container.querySelector('[data-liveshare-viewer-seat="model"]')).toBeNull() })
+    expect(container.textContent).toBe('')
+  })
+})
+
+describe('viewer permission seat', () => {
+  it('states the share\u2019s own tier, with no control and no request', () => {
+    const fetcher = vi.fn()
+    vi.stubGlobal('fetch', fetcher)
+    viewerCapabilities.set({ mode: 'write' })
+    render(<ViewerPermissionSeat t={t} locked capabilities={viewerCapabilities} />)
+
+    const element = document.querySelector('[data-liveshare-viewer-seat="permission"]')
+    expect(element?.textContent).toContain(zh['dialog.sessionMode.write'])
+    expect(element?.textContent).toContain(zh['viewer.permission.locked'])
+    expect(element?.tagName).toBe('SPAN')
+    expect(element?.getAttribute('aria-disabled')).toBe('true')
+    expect(element?.querySelector('button, select, input, [role="button"], [role="combobox"], [tabindex]')).toBeNull()
+    fireEvent.click(element as HTMLElement)
+    expect(fetcher).not.toHaveBeenCalled()
+  })
+
+  it('states an unconfirmed share as unconfirmed rather than as the narrowest tier', () => {
+    viewerCapabilities.set({ mode: 'view', unconfirmed: true })
+    render(<ViewerPermissionSeat t={t} locked capabilities={viewerCapabilities} />)
+
+    const element = document.querySelector('[data-liveshare-viewer-seat="permission"]')
+    expect(element?.textContent).toContain(zh['viewer.permission.unconfirmed'])
+    expect(element?.textContent).not.toContain(zh['dialog.sessionMode.view'])
+  })
+})
+
+describe('viewer seat switch', () => {
+  it('renders the same statement as a control once the seat is selectable', () => {
+    const select = vi.fn()
+    render(
+      <ViewerSeat
+        kind="permission"
+        value="Writable"
+        title="The session permission this share carries"
+        note="Viewers cannot change this themselves"
+        readOnly={false}
+        select={select}
+      />,
+    )
+
+    fireEvent.click(screen.getByRole('button', { name: /Writable/ }))
+    expect(select).toHaveBeenCalledOnce()
+    expect(document.querySelector('[data-liveshare-viewer-seat="permission"]')?.tagName).toBe('BUTTON')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-session-list.spec.ts b/packages/experimental/liveshare/tests/viewer-session-list.spec.ts
new file mode 100644
index 0000000000..688416c9dd
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-session-list.spec.ts
@@ -0,0 +1,70 @@
+/**
+ * The viewer keeps the normal session navigation, so the list it reads must already be scoped to the
+ * shared Session: another Session listed there would expose a private conversation the share does
+ * not cover. The Owner's Session controller lists, and its Gateway admits, only what the reader's own
+ * Peer may see, so every read reaches the Owner as that reader.
+ */
+
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import { describe, expect, it, onTestFinished } from 'vitest'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+import { READER, readerConnection } from './viewer-read-peers.ts'
+
+/** The Gateway's refusal of a call the reader's Peer may not make. */
+const denied = {
+  ok: false,
+  error: { code: 'remote-access/denied', message: 'remote access: session/page: access denied (liveshare/read-only)',
+    details: { action: 'session/page', reason: 'liveshare/read-only' } },
+}
+
+/** An Owner that lists only the shared Session and refuses a page of any other. */
+function ownerFixture() {
+  const seen: { readonly path: string; readonly peer: PeerScope }[] = []
+  const readers = readerConnection(async (request, peer) => {
+    const path = new URL(request.url).pathname
+    seen.push({ path, peer })
+    const result = path === '/api/session/list'
+      ? { ok: true, value: { items: [{ sessionId: 'shared-session', updatedAt: 1, running: true, blank: false }], hasMore: false } }
+      : denied
+    return Response.json({ type: 'server-response', rpcId: 'rpc', result })
+  })
+  const read = createViewerReadService({ connection: readers.connection, sharedSessionId: () => 'shared-session' })
+  onTestFinished(async () => {
+    read.close()
+    await readers.dispose()
+  })
+  return { read, seen }
+}
+
+describe('Liveshare viewer session list', () => {
+  it('[P0] reads the session list as the reader and relays the rows the Owner listed for it', async () => {
+    const { read, seen } = ownerFixture()
+
+    const answer = await read.answer('share-1', { op: 'call', path: '/api/session/list', body: { _request: {} } }, READER)
+
+    expect(answer.status).toBe(200)
+    const items = (answer.body as {
+      result: { value: { items: Array<{ sessionId: string }> } }
+    }).result.value.items
+    expect(items.map(item => item.sessionId)).toEqual(['shared-session'])
+    expect(seen.map(({ path, peer }) => ({ path, principal: peer.principal }))).toEqual([{
+      path: '/api/session/list',
+      principal: { kind: 'share-viewer', shareId: 'share-1', actor: READER },
+    }])
+  })
+
+  it('[P1] relays the Owner\u2019s refusal of a read that names another Session', async () => {
+    const { read, seen } = ownerFixture()
+
+    const answer = await read.answer('share-1', {
+      op: 'call',
+      path: '/api/session/page',
+      body: { type: 'client-request', rpcId: 'private-page', method: 'session/page',
+        payload: { args: { request: { address: { kind: 'session', sessionId: 'private-session' }, throughSeq: 0 } } } },
+    }, READER)
+
+    // The read speaks for the reader's Peer, so the Owner's Gateway decides it as that reader.
+    expect(seen.map(({ peer }) => peer.principal)).toEqual([{ kind: 'share-viewer', shareId: 'share-1', actor: READER }])
+    expect(answer).toEqual({ status: 200, body: { type: 'server-response', rpcId: 'rpc', result: denied } })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-session-plugin.client.spec.ts b/packages/experimental/liveshare/tests/viewer-session-plugin.client.spec.ts
new file mode 100644
index 0000000000..ea2a0200ff
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-session-plugin.client.spec.ts
@@ -0,0 +1,638 @@
+// @vitest-environment jsdom
+/** What the viewer page's own plugin blocks under its access snapshot, and whose scopes it touches. */
+
+import { Context } from '@deepseek-ai/cordis'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import { apply, inject, viewerSignInHref } from '../src/client/viewer-session-plugin.ts'
+import { publishViewerCapabilities, viewerCapabilities } from '../src/client/viewer-capabilities.ts'
+import { viewerContextFacts } from '../src/client/viewer-context.ts'
+import { viewerStatus, viewerStatusFacts } from '../src/client/viewer-status.ts'
+import { en, zh } from '../src/client/locales.ts'
+import { cleanup, render } from '@testing-library/react'
+import { createElement, createRef } from 'react'
+import { DraftEditor } from '@deepseek-ai/dsh-client-ui-conversation/src/client/input/editor/DraftEditor.tsx'
+import {
+  provideViewerConnection, provideViewerLocale, provideViewerRemoteAccess, type ViewerRemoteAccess,
+} from './viewer-plugin-services.client.ts'
+
+const SHARED = 'fx-shared' as SessionId
+const CHILD = 'fx-child' as SessionId
+const OTHER = 'fx-other' as SessionId
+
+interface ViewerTargetWindow {
+  __DSH_LIVESHARE_VIEWER__?: { shareId: string; sessionId: string; basePath?: string }
+}
+
+/** Blocks one Session's composer carries, keyed by the store the plugin wrote. */
+type BlockRecord = { readonly reason: string }
+
+/**
+ * Own one page's plugin over a minimal session list: the source it presents, a branch it made, and a
+ * row it does not address.
+ * @returns The page, its list, the blocks each Session was given, and which scopes were asked for.
+ */
+async function bench(
+  initial?: Parameters<typeof provideViewerRemoteAccess>[1],
+  language: 'zh' | 'en' = 'zh',
+  options: { readonly target?: boolean; readonly missingConversation?: boolean } = {},
+) {
+  const rows = createSnapshotStore<{ byId: Record<string, unknown> }>({ byId: {} })
+  const blocks = new Map<string, BlockRecord | undefined>()
+  const scopesAsked: string[] = []
+  const openSession = vi.fn<(sessionId: string) => void>()
+  const ctx = new Context()
+  provideViewerLocale(ctx, language)
+  const fiber = ctx.plugin({
+    inject: [...inject],
+    apply,
+  })
+  ctx.provide('sessions', {
+    list: {
+      getSnapshot: () => rows.getSnapshot(),
+      subscribe: (observer: () => void) => rows.subscribe(observer),
+    },
+    scope: (sessionId: string) => {
+      scopesAsked.push(sessionId)
+      if (options.missingConversation === true) return { get: () => undefined }
+      return {
+        get: () => ({
+          blocks: {
+            set: (_sessionId: string, block: BlockRecord | undefined) => {
+              blocks.set(sessionId, block)
+            },
+          },
+        }),
+      }
+    },
+  } as never)
+  ctx.provide('uiWorkspace', { openSession } as never)
+  const access = provideViewerRemoteAccess(ctx, initial)
+  const connection = provideViewerConnection(ctx)
+  if (options.target !== false) {
+    (globalThis as ViewerTargetWindow).__DSH_LIVESHARE_VIEWER__ = {
+      shareId: 'share-1',
+      sessionId: SHARED,
+      basePath: '',
+    }
+  }
+  await fiber.await()
+  return { ctx, fiber, rows, blocks, scopesAsked, openSession, access, connection }
+}
+
+/** One action button the page's own status banner offers. */
+function bannerAction(action: 'reload' | 'sign-in' | 'directory' | 'retry'): HTMLButtonElement {
+  const button = document.querySelector<HTMLButtonElement>(`button[data-liveshare-action="${action}"]`)
+  if (button === null) throw new Error(`the page offers no ${action} action`)
+  return button
+}
+
+/** Endpoints a Session grant lists while the reader may prompt and stop it. */
+const WRITES = ['session/cancel', 'session/prompt'] as const
+
+/**
+ * Deliver one non-owner baseline: the complete Session grants the owner's share policy allows this reader.
+ * @param access - Bench access snapshot.
+ * @param grants - Endpoints allowed per Session; a Session absent here is granted nothing.
+ */
+function deliverGrants(access: ViewerRemoteAccess, grants: Record<string, readonly string[]>): void {
+  access.push({
+    type: 'baseline',
+    owner: false,
+    grants: Object.entries(grants).map(([id, actions]) => ({ resource: { kind: 'session', id: id as SessionId }, actions })),
+  })
+}
+
+/**
+ * List the three rows a reader page can carry, with the branch facts the Host publishes for them.
+ * @param page - Bench whose access snapshot receives the grants.
+ * @param options - Whether the page made the branch, and whether its share policy grants the shared
+ *   Session (a scenario about a share that does not drive passes false).
+ */
+function listRows(page: Awaited<ReturnType<typeof bench>>, options: { ownFork: boolean; shared?: boolean }): void {
+  // Both tiers drive the shared Session, and the reader's own branch is driven in either of them: what a
+  // tier decides is the confined write, which the access snapshot does not carry.
+  deliverGrants(page.access, {
+    ...(options.shared === false ? {} : { [SHARED]: ['session/fork', ...WRITES] }),
+    ...(options.ownFork ? { [CHILD]: WRITES } : {}),
+  })
+  page.rows.set({
+    byId: {
+      [SHARED]: { id: SHARED },
+      ...(options.ownFork
+        ? {
+          [CHILD]: {
+            id: CHILD,
+            projectionValues: {
+              forkLineage: {
+                origin: 'fork',
+                sourceSessionId: SHARED,
+                authoredByViewer: true,
+                workspaceReadOnly: true,
+              },
+            },
+          },
+        }
+        : {}),
+      [OTHER]: { id: OTHER },
+    },
+  })
+}
+
+afterEach(() => {
+  cleanup()
+  vi.unstubAllGlobals()
+  delete (globalThis as ViewerTargetWindow).__DSH_LIVESHARE_VIEWER__
+  viewerCapabilities.set({ mode: 'view' })
+  viewerStatusFacts.set({})
+  viewerStatus.set('connecting')
+})
+
+describe('viewer page state lifetime', () => {
+  it('releases the page state when the plugin is disposed', async () => {
+    vi.stubGlobal('fetch', vi.fn((input: unknown) => {
+      const url = String(input)
+      return Promise.resolve(url.includes('/__liveshare/context')
+        ? Response.json({
+          ownerDisplayName: 'Owner',
+          dshVersion: '0.1.5-rc.2',
+          viewer: { providerId: 'oidc', subjectId: 'subject-42', displayName: '许翰翔' },
+          capabilities: { sessionMode: 'write', online: true },
+        })
+        : Response.json({ release_id: 'release-7' }))
+    }))
+    const page = await bench()
+    try {
+      await vi.waitFor(() => {
+        expect(viewerCapabilities.getSnapshot().mode).toBe('write')
+        expect(viewerContextFacts.getSnapshot()).toMatchObject({
+          owner: 'Owner',
+          dshVersion: '0.1.5-rc.2',
+          viewerSubjectId: 'subject-42',
+          viewerDisplayName: '许翰翔',
+        })
+        expect(viewerStatus.getSnapshot()).toBe('ready')
+      })
+    } finally {
+      await page.fiber.dispose()
+    }
+    // A disposed page leaves nothing behind for whichever page mounts next.
+    expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'view' })
+    expect(viewerContextFacts.getSnapshot()).toEqual({})
+    expect(viewerStatusFacts.getSnapshot()).toEqual({})
+    expect(viewerStatus.getSnapshot()).toBe('connecting')
+  })
+
+  it('starts each page from the empty state instead of inheriting the previous one', async () => {
+    // Leftovers from a page that is gone must not speak for the page that mounts now.
+    viewerCapabilities.set({ mode: 'write', reason: 'mode-view' })
+    viewerContextFacts.set({ owner: 'Previous owner' })
+    viewerStatusFacts.set({ reason: 'share-stopped' })
+    viewerStatus.set('stopped')
+    // The reads stay pending until disposal aborts them, so only the page's own entry can clear the
+    // stores under test.
+    vi.stubGlobal('fetch', vi.fn((_input: unknown, init?: RequestInit) => new Promise<Response>((_resolve, reject) => {
+      init?.signal?.addEventListener('abort', () => { reject(new Error('read cancelled')) }, { once: true })
+    })))
+    const page = await bench()
+    try {
+      expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'view' })
+      expect(viewerContextFacts.getSnapshot()).toEqual({})
+      expect(viewerStatusFacts.getSnapshot()).toEqual({})
+      expect(viewerStatus.getSnapshot()).toBe('connecting')
+    } finally {
+      await page.fiber.dispose()
+    }
+  })
+
+  it('leaves the page stores to the mount that replaced it', async () => {
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('the share is not read here'))))
+    const page = await bench()
+    const successor = page.ctx.plugin({ inject: [...inject], apply })
+    await successor.await()
+    // The replaced page's delayed teardown must not wipe what its successor already read.
+    viewerCapabilities.set({ mode: 'write' })
+    await page.fiber.dispose()
+    expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'write' })
+    await successor.dispose()
+    expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'view' })
+    expect(viewerContextFacts.getSnapshot()).toEqual({})
+  })
+})
+
+describe('viewer sign-in return address', () => {
+  it('returns the reader to the page they left, keeping the share in its query', () => {
+    // The viewer page's address is `${relay}/?shareId=...`: signing in from it must come back to that
+    // share, not to the Relay's bare directory.
+    expect(viewerSignInHref('https://relay.example.test', '', {
+      pathname: '/', search: '?shareId=e8HUU7dYsW7Y',
+    })).toBe('https://relay.example.test/__liveshare/auth/start?returnTo='
+      + encodeURIComponent('/?shareId=e8HUU7dYsW7Y'))
+    // A relay mounted under a base path keeps it in both the entry and the return address.
+    expect(viewerSignInHref('https://relay.example.test', '/team/liveshare', {
+      pathname: '/team/liveshare/', search: '?shareId=e8HUU7dYsW7Y&review=1',
+    })).toBe('https://relay.example.test/team/liveshare/__liveshare/auth/start?returnTo='
+      + encodeURIComponent('/team/liveshare/?shareId=e8HUU7dYsW7Y&review=1'))
+  })
+
+  it('keeps the bare page when it carries no query', () => {
+    expect(viewerSignInHref('https://relay.example.test', '/team/liveshare', {
+      pathname: '/team/liveshare/', search: '',
+    })).toBe('https://relay.example.test/team/liveshare/__liveshare/auth/start?returnTo='
+      + encodeURIComponent('/team/liveshare/'))
+  })
+})
+
+describe('viewer session plugin', () => {
+  for (const [language, dictionary] of [['zh', zh], ['en', en]] as const) {
+    describe(`readable viewer in ${language}`, () => {
+      it('renders localized blocked-composer copy and keeps read navigation available', async () => {
+        // The share grants writing but this page's snapshot holds no prompt for it, which is the state a
+        // blocked composer states in the reader's own language.
+        vi.stubGlobal('fetch', vi.fn((input: unknown) => Promise.resolve(
+          String(input).includes('/context')
+            ? Response.json({ capabilities: { sessionMode: 'write', online: true } })
+            : new Response('', { status: 404 }),
+        )))
+        const page = await bench(undefined, language)
+        try {
+          listRows(page, { ownFork: false, shared: false })
+          await vi.waitFor(() => {
+            expect(page.blocks.get(SHARED)?.reason).toBe(dictionary['viewer.writeUnavailableNote'])
+          })
+          const reason = page.blocks.get(SHARED)!.reason
+          const editor = render(createElement(DraftEditor, {
+            classNames: {}, editor: null, scrollRef: createRef<HTMLDivElement>(), editable: false,
+            editorDisabled: true, phase: 'inert', placeholderText: reason, ariaLabel: reason,
+            workspaceTrigger: false, workspacePickerOpen: false, onWorkspaceKeyDown: () => {},
+            hint: null, showPlaceholder: true,
+          }))
+          expect(editor.getByRole('textbox', { name: dictionary['viewer.writeUnavailableNote'] }).getAttribute('contenteditable'))
+            .toBe('false')
+          expect(editor.container.querySelector('[data-composer-placeholder]')?.textContent)
+            .toBe(dictionary['viewer.writeUnavailableNote'])
+          expect(page.openSession).toHaveBeenCalledWith(SHARED)
+          expect(viewerStatus.getSnapshot()).toBe('ready')
+          expect(document.getElementById('liveshare-viewer-status')?.style.display).toBe('none')
+        } finally { await page.fiber.dispose() }
+        expect(document.getElementById('liveshare-viewer-status')).toBeNull()
+      })
+    })
+  }
+
+  it('replaces an unconfirmed share read when the page regains it on focus', async () => {
+    let admitted = false
+    vi.stubGlobal('fetch', vi.fn((input: unknown) => {
+      const url = String(input)
+      return Promise.resolve(url.includes('/context') && admitted
+        ? Response.json({ capabilities: { sessionMode: 'view', online: true } })
+        : new Response('', { status: 403 }))
+    }))
+    const page = await bench()
+    try {
+      deliverGrants(page.access, {})
+      // A refused context read leaves the page unable to confirm the share: it states that, and
+      // offers no action, because the only way forward is another read.
+      await vi.waitFor(() => { expect(viewerStatus.getSnapshot()).toBe('connecting') })
+      expect(document.querySelector('button[data-liveshare-action]')).toBeNull()
+      admitted = true
+      window.dispatchEvent(new Event('focus'))
+      await vi.waitFor(() => { expect(viewerStatus.getSnapshot()).toBe('ready') })
+      expect(page.blocks.get(SHARED)?.reason).toBe(zh['viewer.readonlyNote'])
+      expect(document.getElementById('liveshare-viewer-status')?.style.display).toBe('none')
+    } finally { await page.fiber.dispose() }
+  })
+
+  it('discards context and pending responses that finish after the page plugin is disposed', async () => {
+    let settle!: (response: Response) => void
+    const response = new Promise<Response>((resolve) => { settle = resolve })
+    const signals: AbortSignal[] = []
+    vi.stubGlobal('fetch', vi.fn((_input: unknown, init?: RequestInit) => {
+      if (init?.signal !== undefined && init.signal !== null) signals.push(init.signal)
+      return response
+    }))
+    const page = await bench()
+    const disposing = page.fiber.dispose()
+    await vi.waitFor(() => { expect(signals.every(signal => signal.aborted)).toBe(true) })
+    expect(signals).toHaveLength(2)
+    settle(Response.json({ capabilities: { sessionMode: 'write' } }))
+    await disposing
+    expect(viewerStatusFacts.getSnapshot()).toEqual({})
+    expect(viewerCapabilities.getSnapshot()).toEqual({ mode: 'view' })
+    expect(document.getElementById('liveshare-viewer-status')).toBeNull()
+  })
+  it('clears every composer block it set when the page plugin is disposed', async () => {
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('the share is not read here'))))
+    const page = await bench()
+    listRows(page, { ownFork: false, shared: false })
+    await vi.waitFor(() => { expect(page.blocks.get(SHARED)?.reason).toBeDefined() })
+    await page.fiber.dispose()
+    // A disposed viewer page must not leave the owner's composer blocked behind it.
+    expect(page.blocks.get(SHARED)).toBeUndefined()
+  })
+
+  it('blocks the shared Session and addresses no Session this page was not given', async () => {
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('the share is not read here'))))
+    const page = await bench()
+    try {
+      listRows(page, { ownFork: false, shared: false })
+      // The Workspace navigation action is what selects the Session this page presents.
+      expect(page.openSession).toHaveBeenCalledWith(SHARED)
+      // The page presents one Session and addresses only that one: a row it does not present is never
+      // asked for a scope, because asking would materialize one.
+      expect(new Set(page.scopesAsked)).toEqual(new Set([SHARED]))
+      expect(page.scopesAsked).not.toContain(OTHER)
+      // The share never answered, so this page states that it could not confirm the share's state
+      // rather than claiming the read-only fact an answer would have stated.
+      expect(page.blocks.get(SHARED)?.reason).toContain('无法确认该分享的当前状态')
+    } finally {
+      await page.fiber.dispose()
+    }
+  })
+
+  it('opens the branch this page made while the tier grants driving, and closes it when the switch goes off', async () => {
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('the share is not read here'))))
+    const page = await bench()
+    try {
+      publishViewerCapabilities({ capabilities: { sessionMode: 'view' } })
+      listRows(page, { ownFork: true })
+      // The branch is this page's own and the view tier still drives it: nothing blocks its composer, and
+      // the row it does not address is still untouched.
+      expect(new Set(page.scopesAsked)).toEqual(new Set([SHARED, CHILD]))
+      expect(page.scopesAsked).not.toContain(OTHER)
+      expect(page.blocks.get(CHILD)).toBeUndefined()
+      // The shared Session is driven at this tier too, so its composer is open as well.
+      expect(page.blocks.get(SHARED)).toBeUndefined()
+
+      // The owner turns the share's fork switch off: the snapshot withdraws the branch, and the branch
+      // states the fork verdict rather than the read-only note, which would claim a reach it lost.
+      publishViewerCapabilities({
+        capabilities: { sessionMode: 'view', sessionModeReason: 'fork-not-permitted' },
+      })
+      page.access.push({ type: 'upsert', grant: { resource: { kind: 'session', id: CHILD }, actions: [] } })
+      expect(page.blocks.get(CHILD)?.reason).toBe('分享者未允许分支此会话')
+      expect(page.blocks.get(SHARED)).toBeUndefined()
+    } finally {
+      await page.fiber.dispose()
+    }
+  })
+
+  it('writes the shared Session in write mode and keeps the owner\u2019s own reach out of it', async () => {
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('the share is not read here'))))
+    const page = await bench()
+    try {
+      publishViewerCapabilities({ capabilities: { sessionMode: 'write' } })
+      listRows(page, { ownFork: true })
+      // The owner opened this Session, so the page writes it and says nothing about read-only — and
+      // the branch this page created stays writable beside it.
+      expect(page.blocks.get(SHARED)).toBeUndefined()
+      expect(page.blocks.get(CHILD)).toBeUndefined()
+      // A Session this page was not given is still not addressed at all.
+      expect(page.scopesAsked).not.toContain(OTHER)
+    } finally {
+      await page.fiber.dispose()
+    }
+  })
+
+  it('states the share\u2019s own end on every composer, not the read-only placeholder', async () => {
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('the share is not read here'))))
+    const page = await bench()
+    try {
+      publishViewerCapabilities({ capabilities: { sessionMode: 'fork-readonly' } })
+      listRows(page, { ownFork: true })
+      expect(page.blocks.get(CHILD)).toBeUndefined()
+
+      // The owner stops the share: both the shared Session and the branch this page made state the
+      // same verdict, because nothing on the page can change it. The read-only placeholder would hide
+      // the one fact the reader needs.
+      publishViewerCapabilities({
+        capabilities: { sessionMode: 'view', sessionModeReason: 'share-stopped' },
+      })
+      deliverGrants(page.access, {})
+      expect(page.blocks.get(SHARED)?.reason).toBe('分享已停止')
+      expect(page.blocks.get(CHILD)?.reason).toBe('分享已停止')
+
+      // Expiry reads the same way, and a deployment that cannot fork at all leaves the shared Session
+      // stating that it is read-only.
+      publishViewerCapabilities({
+        capabilities: { sessionMode: 'view', sessionModeReason: 'share-expired' },
+      })
+      expect(page.blocks.get(SHARED)?.reason).toBe('分享已过期')
+      publishViewerCapabilities({
+        capabilities: { sessionMode: 'view', sessionModeReason: 'fork-not-implemented' },
+      })
+      expect(page.blocks.get(SHARED)?.reason).toContain('仅可查看')
+    } finally {
+      await page.fiber.dispose()
+    }
+  })
+
+  it('states a lost access on the shared Session too, not only on a branch', async () => {
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('the share is not read here'))))
+    const page = await bench()
+    try {
+      publishViewerCapabilities({ capabilities: { sessionMode: 'view' } })
+      listRows(page, { ownFork: true })
+      expect(page.blocks.get(CHILD)).toBeUndefined()
+
+      // The owner removes this reader: the tier falls back to view with the account statement
+      // beside it, and the shared Session states that verdict rather than the read-only placeholder —
+      // this reader can read neither Session any more.
+      publishViewerCapabilities({
+        capabilities: { sessionMode: 'view', sessionModeReason: 'viewer-not-authorized' },
+      })
+      deliverGrants(page.access, {})
+      expect(page.blocks.get(SHARED)?.reason).toBe('你的账号已无权访问该分享')
+      expect(page.blocks.get(CHILD)?.reason).toBe('你的账号已无权访问该分享')
+    } finally {
+      await page.fiber.dispose()
+    }
+  })
+
+  it('states a lost Connection as offline until a generation is connected again', async () => {
+    vi.stubGlobal('fetch', vi.fn((input: unknown) => Promise.resolve(String(input).includes('/context')
+      ? Response.json({ capabilities: { sessionMode: 'view', online: true } })
+      : new Response('', { status: 404 }))))
+    const page = await bench()
+    try {
+      page.connection.set('connected')
+      await vi.waitFor(() => { expect(viewerStatus.getSnapshot()).toBe('ready') })
+      page.connection.set('disconnected')
+      expect(viewerStatus.getSnapshot()).toBe('offline')
+      // A retry in flight keeps stating the loss; only a connected generation clears it.
+      page.connection.set('connecting')
+      expect(viewerStatus.getSnapshot()).toBe('offline')
+      page.connection.set('connected')
+      expect(viewerStatus.getSnapshot()).toBe('ready')
+    } finally { await page.fiber.dispose() }
+  })
+
+  it.each([undefined, 'fork-not-permitted'])('states the fork verdict on a branch whose share answer names %s', async (reason) => {
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('context unavailable'))))
+    const page = await bench()
+    try {
+      publishViewerCapabilities({ capabilities: { sessionMode: 'view' } })
+      listRows(page, { ownFork: true })
+      publishViewerCapabilities({
+        capabilities: { sessionMode: 'view', ...(reason === undefined ? {} : { sessionModeReason: reason }) },
+      })
+      page.access.push({ type: 'remove', resource: { kind: 'session', id: CHILD } })
+      expect(page.blocks.get(CHILD)?.reason).toBe('分享者未允许分支此会话')
+    } finally { await page.fiber.dispose() }
+  })
+
+  it('follows the access snapshot: an upsert or remove moves one Session\u2019s block at once', async () => {
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('context unavailable'))))
+    const page = await bench()
+    try {
+      publishViewerCapabilities({ capabilities: { sessionMode: 'view' } })
+      listRows(page, { ownFork: true })
+      expect(page.blocks.get(CHILD)).toBeUndefined()
+      page.access.push({ type: 'remove', resource: { kind: 'session', id: CHILD } })
+      expect(page.blocks.get(CHILD)?.reason).toContain('分享者未允许分支此会话')
+      page.access.push({ type: 'upsert', grant: { resource: { kind: 'session', id: CHILD }, actions: WRITES } })
+      expect(page.blocks.get(CHILD)).toBeUndefined()
+      // A list change re-reads the same answers and keeps them.
+      page.rows.set({ byId: { ...page.rows.getSnapshot().byId } })
+      expect(page.blocks.get(CHILD)).toBeUndefined()
+    } finally { await page.fiber.dispose() }
+  })
+
+  it('offers the composer from the baseline the index injected, and blocks it without one', async () => {
+    // The served index carries the reader's opening access snapshot, so a granted prompt is offered
+    // before the snapshot stream answers; a page without a baseline answers false until one arrives.
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('context unavailable'))))
+    const injected = await bench({
+      type: 'baseline',
+      owner: false,
+      grants: [{ resource: { kind: 'session', id: SHARED }, actions: WRITES }],
+    })
+    try {
+      injected.rows.set({ byId: { [SHARED]: { id: SHARED } } })
+      expect(injected.blocks.has(SHARED)).toBe(true)
+      expect(injected.blocks.get(SHARED)).toBeUndefined()
+      deliverGrants(injected.access, {})
+      await vi.waitFor(() => { expect(injected.blocks.get(SHARED)?.reason).toContain('无法确认该分享的当前状态') })
+    } finally { await injected.fiber.dispose() }
+    const bare = await bench()
+    try {
+      bare.rows.set({ byId: { [SHARED]: { id: SHARED } } })
+      await vi.waitFor(() => { expect(bare.blocks.get(SHARED)?.reason).toContain('无法确认该分享的当前状态') })
+    } finally { await bare.fiber.dispose() }
+  })
+
+  it('holds each Session\u2019s own reach, and closes the Session the access snapshot withdraws', async () => {
+    // The share answers for the Session this page presents; each other Session is judged by the grant the
+    // access snapshot lists for it. Here the owner authorized another Session for writing.
+    const contextAnswered = { capabilities: { sessionMode: 'write' } }
+    vi.stubGlobal('fetch', vi.fn((input: unknown) => Promise.resolve(String(input).includes('/__liveshare/context')
+      ? Response.json(contextAnswered)
+      : new Response('', { status: 404 }))))
+    const page = await bench()
+    try {
+      publishViewerCapabilities(contextAnswered)
+      listRows(page, { ownFork: false })
+      deliverGrants(page.access, { [SHARED]: WRITES, [OTHER]: WRITES })
+      page.rows.set({
+        byId: { ...page.rows.getSnapshot().byId, [OTHER]: { id: OTHER, retainedBy: { mainView: 1 } } },
+      })
+      // Switching to it offers its own writes, which the Session the page presents does not decide.
+      expect(page.blocks.get(OTHER)).toBeUndefined()
+      expect(page.blocks.get(SHARED)).toBeUndefined()
+
+      // The snapshot withdraws that Session: its composer returns to read-only at once and states the
+      // page's own read-only reason, because the snapshot carries no per-Session refusal code.
+      page.access.push({ type: 'remove', resource: { kind: 'session', id: OTHER } })
+      expect(page.blocks.get(OTHER)?.reason).toBe(zh['viewer.readonlyNote'])
+      // One withdrawn Session does not narrow what the page holds for the Session it presents.
+      expect(page.blocks.get(SHARED)).toBeUndefined()
+    } finally {
+      await page.fiber.dispose()
+    }
+  })
+
+  it('performs every action a page state offers', async () => {
+    const request = vi.fn(() => Promise.reject(new Error('context unavailable')))
+    vi.stubGlobal('fetch', request)
+    const page = await bench()
+    const location = {
+      href: '', origin: 'https://relay.example.test', pathname: '/', search: '?shareId=share-1',
+      reload: vi.fn(),
+    }
+    vi.stubGlobal('location', location)
+    try {
+      viewerStatus.set('unavailable')
+      await vi.waitFor(() => { expect(bannerAction('reload')).toBeDefined() })
+      bannerAction('reload').click()
+      expect(location.reload).toHaveBeenCalledOnce()
+
+      // A served document that names no base path points the page at its own origin's root.
+      ;(globalThis as ViewerTargetWindow).__DSH_LIVESHARE_VIEWER__ = { shareId: 'share-1', sessionId: SHARED }
+      viewerStatus.set('reauthenticate')
+      await vi.waitFor(() => { expect(bannerAction('sign-in')).toBeDefined() })
+      bannerAction('sign-in').click()
+      expect(location.href).toBe(viewerSignInHref('https://relay.example.test', '', {
+        pathname: '/', search: '?shareId=share-1',
+      }))
+
+      viewerStatus.set('invalid')
+      await vi.waitFor(() => { expect(bannerAction('directory')).toBeDefined() })
+      bannerAction('directory').click()
+      expect(location.href).toBe('https://relay.example.test/')
+
+      // The retry action re-reads the share instead of navigating anywhere.
+      const before = request.mock.calls.length
+      viewerStatus.set('offline')
+      await vi.waitFor(() => { expect(bannerAction('retry')).toBeDefined() })
+      bannerAction('retry').click()
+      await vi.waitFor(() => { expect(request.mock.calls.length).toBeGreaterThan(before) })
+    } finally {
+      await page.fiber.dispose()
+    }
+  })
+
+  it('skips the focus re-read while the page is hidden', async () => {
+    const request = vi.fn(() => Promise.reject(new Error('context unavailable')))
+    vi.stubGlobal('fetch', request)
+    const page = await bench()
+    try {
+      await vi.waitFor(() => { expect(request).toHaveBeenCalled() })
+      const before = request.mock.calls.length
+      Object.defineProperty(document, 'hidden', { configurable: true, value: true })
+      window.dispatchEvent(new Event('focus'))
+      document.dispatchEvent(new Event('visibilitychange'))
+      await Promise.resolve()
+      expect(request.mock.calls.length).toBe(before)
+    } finally {
+      Object.defineProperty(document, 'hidden', { configurable: true, value: false })
+      await page.fiber.dispose()
+    }
+  })
+
+  it('addresses no composer when a Session exposes no conversation face', async () => {
+    vi.stubGlobal('fetch', vi.fn(() => Promise.reject(new Error('the share is not read here'))))
+    const page = await bench(undefined, 'zh', { missingConversation: true })
+    try {
+      listRows(page, { ownFork: false })
+      await vi.waitFor(() => { expect(page.scopesAsked).toContain(SHARED) })
+      // Nothing to block: the Session's own face is what carries the composer, and it exposes none.
+      expect(page.blocks.size).toBe(0)
+    } finally {
+      await page.fiber.dispose()
+    }
+  })
+
+  it('reads the bare page when the served document names no share', async () => {
+    const request = vi.fn((_input: unknown) => Promise.reject(new Error('context unavailable')))
+    vi.stubGlobal('fetch', request)
+    const page = await bench(undefined, 'zh', { target: false })
+    try {
+      await vi.waitFor(() => { expect(request).toHaveBeenCalled() })
+      // No share and no base path named: the context read asks for the empty share.
+      expect(String(request.mock.calls[0]?.[0])).toBe('/__liveshare/context?shareId=')
+    } finally {
+      await page.fiber.dispose()
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-session-row.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-session-row.client.spec.tsx
new file mode 100644
index 0000000000..3a3a1d7c7c
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-session-row.client.spec.tsx
@@ -0,0 +1,76 @@
+// @vitest-environment jsdom
+/** Viewer-owned lineage markers alongside the shared Session menu. */
+import { Context } from '@deepseek-ai/cordis'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { SlotRegistry } from '@deepseek-ai/dsh-client-ui-renderer/client'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import { cleanup, fireEvent, render } from '@testing-library/react'
+import type { ReactNode } from 'react'
+import { afterEach, describe, expect, it } from 'vitest'
+import { apply, inject } from '../src/client/viewer-session-row.tsx'
+import { en, NS, zh } from '../src/client/locales.ts'
+
+const SHARED = 'shared' as SessionId
+const contexts: Context[] = []
+
+afterEach(async () => {
+  cleanup()
+  await Promise.all(contexts.splice(0).map(ctx => ctx.fiber.dispose()))
+})
+
+/** Mount the viewer's lineage contribution under the sidebar's declared slots. */
+async function bench() {
+  const ctx = new Context()
+  contexts.push(ctx)
+  await ctx.plugin(SlotRegistry).await()
+  const slots = ctx.get('slots') as SlotRegistry
+  slots.register({ name: 'root', children: {
+    'sidebar.workspaces.session.menu.item': { kind: 'list', scope: 'root' },
+    'sidebar.session.row.leading': { kind: 'list', scope: 'root' },
+  } } as never, () => null)
+  const locale = new LocaleRuntime(ctx)
+  locale.setLocale('zh')
+  ctx.provide('locale', locale)
+  locale.register(NS, { zh, en })
+  await ctx.plugin({ inject: [...inject], apply }).await()
+  const entry = slots.entriesOfSlot('sidebar.session.row.leading')[0]!
+  const View = entry.component as (props: Record<string, unknown>) => ReactNode
+  const marker = (projectionValues?: unknown, sourceTitle?: string) => render(<View
+    sessionId={SHARED} t={locale.bind('liveshare')}
+    useSessions={(selector: (value: unknown) => unknown) => selector({ byId: {
+      [SHARED]: { id: SHARED, projectionValues },
+      'fx-source': { id: 'fx-source', title: sourceTitle },
+    } })}
+  />)
+  return { slots, marker }
+}
+
+describe('viewer Session lineage', () => {
+  it('contributes no duplicate Session menu actions', async () => {
+    const page = await bench()
+    expect(page.slots.entriesOfSlot('sidebar.workspaces.session.menu.item')).toEqual([])
+  })
+
+  it.each([undefined, {}, { forkLineage: null }, { forkLineage: [] },
+    { forkLineage: { origin: 'root' } }, { forkLineage: { origin: 'fork', workspaceReadOnly: false } },
+  ])('leaves a non-viewer lineage unmarked (%j)', async (projectionValues) => {
+    const page = await bench()
+    expect(page.marker(projectionValues).container.textContent).toBe('')
+  })
+
+  it.each([undefined, 'missing-source'])('uses the branch label without a known source title (%s)', async (sourceSessionId) => {
+    const page = await bench()
+    const view = page.marker({ forkLineage: { origin: 'fork', workspaceReadOnly: true, sourceSessionId } })
+    fireEvent.pointerEnter(view.container.querySelector('span') as HTMLElement)
+    expect(view.container.textContent).toContain('分叉会话')
+  })
+
+  it('marks a branch with the title its source Session carries', async () => {
+    const page = await bench()
+    const view = page.marker({ forkLineage: {
+      origin: 'fork', workspaceReadOnly: true, sourceSessionId: 'fx-source',
+    } }, '上游会话')
+    fireEvent.pointerEnter(view.container.querySelector('span') as HTMLElement)
+    expect(view.container.textContent).toContain('来自「上游会话」的分支')
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-session.client.spec.ts b/packages/experimental/liveshare/tests/viewer-session.client.spec.ts
new file mode 100644
index 0000000000..7d2f20c269
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-session.client.spec.ts
@@ -0,0 +1,81 @@
+// @vitest-environment jsdom
+/** Selecting the one Session a served viewer page presents, once the page's list carries it. */
+
+import { Context } from '@deepseek-ai/cordis'
+import { describe, expect, it, vi } from 'vitest'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import { openSharedSession } from '../src/client/viewer-session.ts'
+
+const SHARED = 'fx-shared' as SessionId
+
+interface ViewerTargetWindow {
+  __DSH_LIVESHARE_VIEWER__?: { shareId: string; sessionId: string; basePath: string }
+}
+
+/** The page global one served viewer page installs. */
+function target(sessionId: string): void {
+  ;(globalThis as ViewerTargetWindow).__DSH_LIVESHARE_VIEWER__ = { shareId: 'share-1', sessionId, basePath: '' }
+}
+
+describe('opening the shared Session', () => {
+  it('navigates at once when the session list already carries the shared Session', () => {
+    const openSession = vi.fn()
+    const ctx = new Context()
+    ctx.provide('sessions', { list: { getSnapshot: () => ({ byId: { [SHARED]: { id: SHARED } } }), subscribe: () => () => {} } } as never)
+    ctx.provide('uiWorkspace', { openSession } as never)
+    target(SHARED)
+
+    openSharedSession(ctx)
+
+    expect(openSession).toHaveBeenCalledWith(SHARED)
+    void ctx.fiber.dispose()
+  })
+
+  it('navigates once the list publishes the Session after the page opened', () => {
+    let snapshot: { byId: Record<string, unknown> } = { byId: {} }
+    let notify: (() => void) | undefined
+    const openSession = vi.fn()
+    const ctx = new Context()
+    ctx.provide('sessions', {
+      list: {
+        getSnapshot: () => snapshot,
+        subscribe: (listener: () => void) => { notify = listener; return () => { notify = undefined } },
+      },
+    } as never)
+    ctx.provide('uiWorkspace', { openSession } as never)
+    target(SHARED)
+
+    openSharedSession(ctx)
+    expect(openSession).not.toHaveBeenCalled()
+    const onListed = notify
+    onListed?.()
+    expect(openSession).not.toHaveBeenCalled()
+
+    snapshot = { byId: { [SHARED]: { id: SHARED } } }
+    onListed?.()
+    // A notifier that delivers once more while removing this listener cannot navigate twice.
+    onListed?.()
+    expect(openSession).toHaveBeenCalledOnce()
+    expect(openSession).toHaveBeenCalledWith(SHARED)
+    void ctx.fiber.dispose()
+  })
+
+  it('opens nothing for a page with no share, no Session id, or no session service', () => {
+    const ctx = new Context()
+    const openSession = vi.fn()
+    ctx.provide('uiWorkspace', { openSession } as never)
+    // No page global at all.
+    delete (globalThis as ViewerTargetWindow).__DSH_LIVESHARE_VIEWER__
+    openSharedSession(ctx)
+    // A page global that names no Session.
+    target('')
+    openSharedSession(ctx)
+    expect(openSession).not.toHaveBeenCalled()
+    void ctx.fiber.dispose()
+
+    // The page has not listed sessions yet: there is no list to wait on.
+    target(SHARED)
+    openSharedSession(new Context())
+    expect(openSession).not.toHaveBeenCalled()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-settings-privacy.spec.ts b/packages/experimental/liveshare/tests/viewer-settings-privacy.spec.ts
new file mode 100644
index 0000000000..b0fb99c199
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-settings-privacy.spec.ts
@@ -0,0 +1,140 @@
+/**
+ * A shared reader never obtains the Owner's global configuration document.
+ *
+ * The reader's calls reach the Owner's Gateway as the reader's own Peer, and the Gateway admits a
+ * non-owner Peer only to the actions this package's `share-viewer` policy binds, so the Owner's
+ * configuration services never run for it.
+ */
+import { Context } from '@deepseek-ai/cordis'
+import RemoteAccessService from '@deepseek-ai/dsh-api-remote-access'
+import TypertGateway from '@deepseek-ai/dsh-api-gateway'
+import SettingsController from '@deepseek-ai/dsh-api-settings-controller'
+import { Peer, type ConnectionRpcResult } from '@deepseek-ai/dsh-client-connection'
+import type { SettingsDescriptor } from '@deepseek-ai/dsh-settings'
+import { Remote, TypertRemoteService, type PeerScope, type Principal } from '@deepseek-ai/dsh-typert-protocol'
+import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { createViewerAccessPolicy } from '../src/host/viewer-access-policy.ts'
+import type { ForkShareState } from '../src/host/fork-policy.ts'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+import { readerConnection } from './viewer-read-peers.ts'
+
+const actor = { providerId: 'oidc', tenantId: 'fixture-tenant', subjectId: 'reader' }
+const privateValues = ['private-provider.invalid', 'SYNTHETIC_NOT_A_REAL_SECRET',
+  '/fixture/private-root', 'fixture-private-tenant', 'provider-fixture']
+
+type GatewayRpc = (endpoint: string, payload: unknown, signal: AbortSignal, peer: PeerScope) => Promise<ConnectionRpcResult<unknown>>
+
+/** An Owner page read a share reader is allowed, recording whom each call spoke for. */
+class CommandsFixture extends TypertRemoteService {
+  readonly callers: Principal[] = []
+
+  constructor(ctx: Context) {
+    super(ctx, 'commandsFixture', { namespace: 'commands' })
+  }
+
+  @Remote
+  list(): readonly string[] {
+    const principal = this.ctx.invocation?.peer.principal
+    if (principal !== undefined) this.callers.push(principal)
+    return []
+  }
+}
+
+async function harness(mode: 'view' | 'write' = 'view') {
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  await ctx.plugin(TypertRegistry)
+  await ctx.plugin(RemoteAccessService)
+  let intercepted: GatewayRpc | undefined
+  ctx.provide('connection', {
+    rpc: { intercept: (_path: string, _claims: unknown, handler: GatewayRpc) => { intercepted = handler; return () => {} } },
+  } as never)
+  await ctx.plugin(TypertGateway, {})
+  const rpc: GatewayRpc = (endpoint, payload, signal, peer) => {
+    if (intercepted === undefined) throw new Error('Gateway interceptor was not registered')
+    return intercepted(endpoint, payload, signal, peer)
+  }
+  const namespaces: SettingsDescriptor[] = [{
+    ns: 'provider-fixture' as SettingsDescriptor['ns'],
+    autoGenerate: false, schema: {}, applies: 'live', revision: 0,
+    value: { providers: { fixture: { baseURL: 'https://private-provider.invalid',
+      headers: { authorization: 'SYNTHETIC_NOT_A_REAL_SECRET' } } } },
+    base: { privateDirectory: '/fixture/private-root' },
+    user: { tenant: 'fixture-private-tenant' },
+  }]
+  const describeSettings = vi.fn(() => namespaces)
+  ctx.provide('settings', { writable: true, describe: describeSettings } as never)
+  await ctx.plugin(SettingsController)
+  await ctx.plugin(CommandsFixture)
+  const commands = ctx.get('commandsFixture') as CommandsFixture
+  const share: ForkShareState = { shareId: 'share', sessionId: 'shared-source',
+    sessionMode: mode, allowsFork: mode !== 'view', viewerAdmitted: true, stopped: false }
+  ctx.remoteAccess.registerPolicy('share-viewer', createViewerAccessPolicy({
+    share: shareId => shareId === share.shareId ? share : undefined,
+    viewerAdmitted: () => true,
+    sourceConfined: () => true,
+    forks: {
+      find: () => undefined,
+      listForShare: () => [],
+      allowsPrompt: () => ({ ok: false, code: 'fork-unknown-child', message: 'this Owner holds no forks' }),
+    },
+    workspaces: () => [],
+    declaredCapabilities: () => [],
+  }))
+  // The Owner's shared `/api` handler: one Connection request decoded and handed to the Gateway as its Peer.
+  const readers = readerConnection(async (request, peer) => {
+    const envelope = await request.json() as { readonly rpcId: string; readonly method: string; readonly payload: unknown }
+    return Response.json({
+      type: 'server-response',
+      rpcId: envelope.rpcId,
+      result: await rpc(envelope.method, envelope.payload, request.signal, peer),
+    })
+  })
+  const reader = createViewerReadService({
+    sharedSessionId: () => share.sessionId,
+    viewerStillAdmitted: () => true,
+    forkStateOf: () => share,
+    connection: readers.connection,
+  })
+  onTestFinished(async () => {
+    reader.close()
+    await readers.dispose()
+  })
+  const read = (method: string) => reader.answer('share', {
+    op: 'call', path: `/api/${method}`,
+    body: { type: 'client-request', rpcId: `${method}-read`, method, payload: { args: {} } },
+  }, actor)
+  return { ctx, rpc, read, describeSettings, commands }
+}
+
+describe('shared reader configuration privacy', () => {
+  it.each(['view', 'write'] as const)('refuses global reads in %s without running the Owner\u2019s configuration services', async (mode) => {
+    const { read, describeSettings } = await harness(mode)
+    for (const method of ['settings/describe', 'credentials/describe']) {
+      const answer = await read(method)
+      expect(answer).toMatchObject({ status: 200, body: { result: {
+        ok: false, error: { code: 'remote-access/denied', details: { action: method, reason: 'liveshare/read-only' } },
+      } } })
+      for (const value of privateValues) expect(JSON.stringify(answer)).not.toContain(value)
+    }
+    expect(describeSettings).not.toHaveBeenCalled()
+  })
+
+  it('keeps an allowed page read available to the same reader', async () => {
+    const { read, commands } = await harness()
+    expect(await read('commands/list')).toMatchObject({ status: 200, body: { result: { ok: true, value: [] } } })
+    expect(commands.callers).toEqual([{ kind: 'share-viewer', shareId: 'share', actor }])
+  })
+
+  it('leaves the normal Owner settings endpoint unchanged', async () => {
+    const { ctx, rpc } = await harness()
+    const owner = new Peer(ctx, { principal: { kind: 'owner' } })
+    expect(await rpc('settings/describe', { args: {} }, AbortSignal.timeout(10_000), owner)).toMatchObject({
+      ok: true,
+      value: { writable: true, hasDocument: true, namespaces: [{ ns: 'provider-fixture', value: { providers: { fixture: {
+        baseURL: 'https://private-provider.invalid', headers: { authorization: 'SYNTHETIC_NOT_A_REAL_SECRET' },
+      } } } }] },
+    })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-share-not-writable-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-share-not-writable-artifact.client.spec.tsx
new file mode 100644
index 0000000000..25b5537a7e
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-share-not-writable-artifact.client.spec.tsx
@@ -0,0 +1,96 @@
+// @vitest-environment jsdom
+/**
+ * The assembled viewer page writing a share the owner no longer allows writing: what the reader's own
+ * composer states, and that none of the Host's own words for it reaches the page.
+ */
+
+import { act, cleanup, waitFor } from '@testing-library/react'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import { installViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+describe('Assembled liveshare viewer page on a share that stopped allowing writes', () => {
+  it('states the refusal with its code, and none of the Host\u2019s own words', async () => {
+    // The fixture answers every prompt with the refusal a Host sends when its share no longer allows
+    // writing the Session this page is writing, so the reader's own composer is exercised against it.
+    // This bench carries the refusal through the Client's own RPC double; the flat body a Host writes on
+    // the wire is the transport suite's case.
+    const inputFixture = installViewerInputFixture()
+    const owned: { disposeOwner?: () => void; stopRelay?: () => Promise<void> } = {}
+    onTestFinished(async () => {
+      await inputFixture.dispose()
+      await owned.stopRelay?.()
+      owned.disposeOwner?.()
+      cleanup()
+      vi.unstubAllGlobals()
+      document.body.replaceChildren()
+      document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+    })
+    history.replaceState(null, '', '/?shareId=share-1&fixture&fixturePrompt=reject&fixturePromptCode=share-not-writable')
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    Object.defineProperty(navigator, 'languages', { value: ['zh-CN'], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: 'zh-CN', configurable: true })
+    const owner = createFixtureFaces({ viewerSourceGrant: () => ({ sessionMode: 'write' }),
+      rejectPrompt: true, rejectPromptCode: 'share-not-writable' })
+    owned.disposeOwner = () => { owner.dispose() }
+    owned.stopRelay = installViewerRelay({
+      owner: owner.rpc,
+      other: (url) => {
+        if (url.includes('/__liveshare/context')) {
+          return Promise.resolve(Response.json({
+            shareId: 'share-1',
+            sessionId: 'fx-alpha',
+            ownerDisplayName: 'Owner',
+            capabilities: { readOnly: false, sessionMode: 'write' },
+          }))
+        }
+        if (url.endsWith('/health')) return Promise.resolve(Response.json({ release_id: 'release-7' }))
+        return Promise.reject(new Error(`Unexpected request: ${url}`))
+      },
+    })
+
+    await act(async () => {
+      await inputFixture.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' })
+    })
+
+    // The mode this page read lets it write the shared Session, so the composer is its own.
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash"]')).not.toBeNull()
+    }, { timeout: 30_000 })
+    const composer = await waitFor(() => {
+      const editable = document.querySelector('[contenteditable="true"]')
+      expect(editable).not.toBeNull()
+      return editable as HTMLElement
+    }, { timeout: 15_000 })
+    // The shared Session is running, so this reader's draft is what the primary action sends or steers:
+    // whichever the page offers here, it is the prompt the Host answers.
+    await inputFixture.send('fx-alpha', 'hello', '排队发送')
+
+    // The reader sees the Host's message with its stable code, and the composer keeps the draft rather
+    // than reporting a write that landed.
+    await waitFor(() => {
+      expect(document.body.textContent).toContain(
+        'preparing this fork failed: token=FIXTURE_ONLY_NOT_A_REAL_CREDENTIAL; file=/private/unshared-fixture/credential.txt; url=https://internal.invalid/creds (share-not-writable)',
+      )
+    }, { timeout: 15_000 })
+    expect(composer.textContent).toContain('hello')
+  }, 180_000)
+})
diff --git a/packages/experimental/liveshare/tests/viewer-share-path.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-share-path.client.spec.tsx
new file mode 100644
index 0000000000..8d1bb84f82
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-share-path.client.spec.tsx
@@ -0,0 +1,101 @@
+// @vitest-environment jsdom
+/**
+ * The reader page's own workspace-file claim: the tab type it registers for
+ * `dsh-resource://file/**`, and the notice its body states.
+ *
+ * The bench boots the shipped right Sidebar (the type registry and the seat that resolves an address
+ * through it) and the resources face it pins through, then mounts the viewer module, so the
+ * assertions cover the routing a reader's click actually takes rather than a hand-built registry.
+ */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { act, waitFor } from '@testing-library/react'
+import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
+import { LocaleRuntime } from '@deepseek-ai/dsh-client-locale/client'
+import { apply as menusApply, inject as menusInject } from '@deepseek-ai/dsh-client-ui-context-menu/client'
+import type { SessionId } from '@deepseek-ai/dsh-session/types'
+import { apply as resourcesApply, inject as resourcesInject } from '@deepseek-ai/dsh-client-resources/src/client/index.ts'
+import { apply as sidebarApply, inject as sidebarInject } from '@deepseek-ai/dsh-client-ui-sidebar-right/src/client/index.ts'
+import { en, NS, zh } from '../src/client/locales.ts'
+import { apply, inject } from '../src/client/viewer-share-path.tsx'
+
+const SESSION = 'reader' as SessionId
+const ADDRESS = `dsh-resource://file/session/${SESSION}/src/a.ts`
+const UNAVAILABLE = '此页面无法打开工作区文件：分享提供的是文件路径，不是文件内容。'
+const SHORTCUT_CATALOG: readonly never[] = []
+let runtime: SlotTestRuntime | undefined
+
+afterEach(async () => {
+  await runtime?.dispose()
+  runtime = undefined
+})
+
+/**
+ * One reader page: the shipped right Sidebar over the slot runtime, plus the viewer module.
+ * @returns the runtime, the right Sidebar's rendered view, and the page's locale.
+ */
+async function boot() {
+  const rt = await SlotTestRuntime.create()
+  runtime = rt
+  rt.ctx.provide('layout', { openRightbar: vi.fn(), closeRightbar: vi.fn(), panelInfo: rt.panelInfo } as never)
+  rt.ctx.provide('shortcuts', {
+    register: () => () => {},
+    catalog: { getSnapshot: () => SHORTCUT_CATALOG, subscribe: () => () => {} },
+  } as never)
+  const locale = new LocaleRuntime(rt.ctx)
+  rt.ctx.provide('locale', locale)
+  // The Liveshare client face registers the dictionaries this child plugin renders with.
+  locale.register(NS, { zh, en })
+  rt.slots.installLocale(locale)
+  await act(async () => { locale.setLocale('zh') })
+  await rt.declare({ rightbar: { kind: 'single', scope: 'root' } })
+  await rt.sessions.add({ id: SESSION })
+  await rt.sessions.retainFor(rt.ctx, SESSION, { source: 'mainView' }).ready
+  await rt.mount({ inject: [...resourcesInject], apply: resourcesApply })
+  await rt.mount({ inject: [...menusInject], apply: menusApply })
+  await rt.mount({ inject: [...sidebarInject], apply: sidebarApply })
+  await rt.mount({ inject: [...inject], apply })
+  const view = rt.renderSlot('rightbar', { width: 600, viewportWidth: 1440, canShow: true })
+  return { rt, view }
+}
+
+describe('viewer share-path claim', () => {
+  it('claims a workspace-file address and titles the tab with the file name', async () => {
+    const h = await boot()
+    const [definition] = h.rt.ctx.sidebarRightTabs.candidates(ADDRESS)
+    expect(definition).toMatchObject({
+      kind: 'liveshare-share-path', patterns: ['dsh-resource://file/**'], priority: 'builtin',
+    })
+    expect(definition?.title(ADDRESS)).toBe('a.ts')
+    expect(h.rt.ctx.sidebarRightTabs.claim(ADDRESS)).toEqual({
+      kind: 'liveshare-share-path', contentId: ADDRESS, title: 'a.ts',
+    })
+  })
+
+  it('titles an address that ends at a separator with the address itself', async () => {
+    const h = await boot()
+    const [definition] = h.rt.ctx.sidebarRightTabs.candidates(ADDRESS)
+
+    // A directory-shaped address has no basename to show, so the address is the title.
+    const directory = `dsh-resource://file/session/${SESSION}/src/`
+    expect(definition?.title(directory)).toBe(directory)
+  })
+
+  it('titles a name that is not valid percent encoding as written, and decodes one that is', async () => {
+    const h = await boot()
+    const [definition] = h.rt.ctx.sidebarRightTabs.candidates(ADDRESS)
+
+    // Decoding a malformed sequence fails; the reader still sees the name the address states.
+    expect(definition?.title('dsh-resource://file/session/x/100%.ts')).toBe('100%.ts')
+    expect(definition?.title('dsh-resource://file/session/x/a%20b.ts')).toBe('a b.ts')
+  })
+
+  it('states in the tab why this page cannot show the file', async () => {
+    const h = await boot()
+    act(() => { h.rt.ctx.sidebarRight.openResource(ADDRESS) })
+    await waitFor(() => {
+      expect(h.view.container.querySelector(`[data-liveshare-share-path="${ADDRESS}"]`)?.textContent)
+        .toBe(UNAVAILABLE)
+    })
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-shell-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-shell-artifact.client.spec.tsx
new file mode 100644
index 0000000000..e6ab60bf10
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-shell-artifact.client.spec.tsx
@@ -0,0 +1,188 @@
+// @vitest-environment jsdom
+/** The assembled viewer page mounts the normal DSH client UI for the Session its carrier names. */
+
+import { act, cleanup, fireEvent, screen, waitFor, within } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import type { FixtureWorld } from './viewer-fixture.client.ts'
+import { installViewerInputFixture } from './viewer-input-fixture.client.ts'
+import type { ViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+let inputFixture: ViewerInputFixture | undefined
+let owner: FixtureWorld | undefined
+let stopRelay: (() => Promise<void>) | undefined
+
+afterEach(async () => {
+  await inputFixture?.dispose()
+  await stopRelay?.()
+  owner?.dispose()
+  inputFixture = undefined
+  stopRelay = undefined
+  owner = undefined
+  cleanup()
+  vi.unstubAllGlobals()
+  document.body.replaceChildren()
+  document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+})
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+describe('Assembled liveshare viewer page', () => {
+  it('mounts the normal conversation UI for the served session', async () => {
+    // The fixture history declares one delivered workspace file, so the page's treatment of that row is
+    // exercised beside the rest of the read-only surface.
+    inputFixture = installViewerInputFixture()
+    history.replaceState(null, '', '/?shareId=share-1&fixture&fixturePresented=1')
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    Object.defineProperty(navigator, 'languages', { value: ['en-US'], configurable: true })
+    owner = createFixtureFaces({ presented: true })
+    stopRelay = installViewerRelay({ owner: owner.rpc })
+
+    // The carrier names the share and the one Session it presents; the viewer opens that Session by
+    // itself because it carries no session list of its own.
+    await act(async () => {
+      await inputFixture?.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' })
+    })
+
+    await waitFor(() => {
+      expect(document.body.textContent).not.toBe('')
+    }, { timeout: 30_000 })
+    // The page's identity lives in the sidebar's own brand row: the floating banner is gone, and
+    // the brand seat is the way back to the share directory.
+    expect(document.getElementById('liveshare-home-bar')).toBeNull()
+    expect(document.body.style.paddingTop).toBe('')
+    // The sidebar keeps the brand identity out of the accessibility tree whenever the page cannot
+    // start a Session, so the viewer's home link is read from the DOM rather than by role.
+    const brand = document.querySelector<HTMLAnchorElement>('a[aria-label="Back to LiveShare home"]')
+    expect(brand).not.toBeNull()
+    expect(brand?.getAttribute('href')).toBe('/')
+    expect(brand?.textContent).toContain('LiveShare')
+    // The shared Session opens by itself: the viewer carries the normal navigation but presents
+    // only the one authorized Session.
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash"]')).not.toBeNull()
+    }, { timeout: 15_000 })
+    // Read-only navigation stays: the sidebar's own Session tree is on screen and lists the shared
+    // Session, so a viewer browses the share exactly like an owner browses their sessions.
+    const tree = await screen.findByRole('tree', { name: 'Sessions' })
+    expect(tree.querySelectorAll('[role="treeitem"]').length).toBeGreaterThan(0)
+    // What it must not carry is any action this page cannot perform: no Session or Workspace
+    // management entries, and no New Session affordance (the endpoints its access snapshot excludes).
+    expect(screen.queryByRole('button', { name: /^New session in / })).toBeNull()
+    expect(screen.queryByRole('button', { name: 'New session' })).toBeNull()
+    const workspace = inputFixture.context().get('workspaces')?.list.getSnapshot().items[0]
+    if (workspace === undefined) throw new Error('shared Workspace is not listed')
+    const menus = inputFixture.context().get('contextMenus')
+    if (menus === undefined) throw new Error('context menus are not mounted')
+    const workspaceMenu = menus.resolve({ kind: 'workspace', value: {
+      workspaceId: workspace.workspaceId, path: workspace.path, displayTitle: workspace.title,
+    } })
+    await workspaceMenu.ready
+    expect(workspaceMenu.source.getSnapshot()).toEqual([])
+    workspaceMenu.dispose()
+    // A Session row keeps its menu for Copy Session ID, and every write verb in it hides itself.
+    const rowMenu = screen.getAllByRole('button', { name: /^Session actions for / })[0]
+    if (rowMenu === undefined) throw new Error('no Session row menu')
+    await act(async () => { fireEvent.click(rowMenu) })
+    expect((await screen.findAllByRole('menuitem')).map(item => item.textContent)).toEqual(['Copy Session ID'])
+    await act(async () => { fireEvent.keyDown(document, { key: 'Escape' }) })
+    await waitFor(() => { expect(screen.queryByRole('menu')).toBeNull() })
+    expect(document.body.textContent).not.toContain('Fork session')
+    expect(document.body.textContent).not.toContain('Archive session')
+    // Global settings belong to the owner's DSH, so the viewer page boots no settings surface at
+    // all: the row that opens it comes from a module this roster never carries, and its label —
+    // `settings.trigger` in ui-settings-general — is what a booted one would be named.
+    expect(screen.queryByRole('button', { name: /^(设置|Settings)$/u })).toBeNull()
+    // No write affordance reaches a viewer: the framework's own composer block makes the editor
+    // non-editable and states why, and the session management verbs belong to the owner's DSH,
+    // which refuses them server-side anyway.
+    expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    // This page never read an answer from the share, so it states that the share's state is
+    // unconfirmed instead of presenting an access it was never told it holds.
+    expect(document.body.textContent).toContain('could not be confirmed')
+    expect(document.body.textContent).not.toContain('仅可查看')
+    // The fixture Session is running, and a viewer cannot interrupt the owner's generation: the
+    // composer offers neither Stop nor Send.
+    expect(screen.queryByRole('button', { name: 'Stop generating' })).toBeNull()
+    expect(screen.queryByRole('button', { name: /发送|Send/ })).toBeNull()
+    expect(screen.queryByRole('button', { name: /附件|Attach|上传|Upload/ })).toBeNull()
+    expect(screen.queryByRole('button', { name: /重命名|Rename|归档|Archive|删除|Delete|Fork/ })).toBeNull()
+    // The model this Session runs on is stated where a DSH user looks for it, and it is a label: the
+    // reader cannot change the owner's model, but nothing here hides which one the owner chose.
+    await waitFor(() => { expect(document.querySelector('[data-liveshare-viewer-seat="model"]')).not.toBeNull() })
+    const modelSeat = document.querySelector<HTMLElement>('[data-liveshare-viewer-seat="model"]')
+    expect(modelSeat?.tagName).toBe('SPAN')
+    expect(modelSeat?.textContent).toMatch(/deepseek/iu)
+    expect(modelSeat?.querySelector('button, select, [role="button"], [role="combobox"]')).toBeNull()
+    expect(screen.queryByRole('button', { name: /model|模型/iu })).toBeNull()
+    // The turn tail is on screen, and it offers no branch action: this page cannot write, so the
+    // Chat surface never registers one for the shared Session.
+    expect(document.querySelector('[data-actions-reveal]')).not.toBeNull()
+    expect(screen.queryByRole('button', { name: 'Branch into a new conversation' })).toBeNull()
+    // The assembled conversation renders the fixture history through the real presentation plugins:
+    // a user turn, an assistant turn whose Markdown became a highlighted code block, and a tool card.
+    expect(document.body.textContent).toContain('问题 51：fixture 历史消息')
+    expect(document.body.textContent).toContain('Tool call')
+    const codeBlock = document.querySelector('pre.shiki')
+    expect(codeBlock).not.toBeNull()
+    expect(codeBlock?.querySelector('code')).not.toBeNull()
+    expect(document.body.textContent).toContain('echo · turn 52')
+    expect(document.querySelectorAll('[data-sample="bash"]').length).toBeGreaterThan(0)
+    // A delivered file the transcript declares stays readable — its name and the sidebar preview —
+    // and the menu that would open the file on the owner's machine stays closed.
+    const deliveredRow = document.querySelector<HTMLElement>('[data-presented-files-row]')
+    expect(deliveredRow).not.toBeNull()
+    expect(within(deliveredRow as HTMLElement).getByText('demo.txt')).toBeDefined()
+    expect(within(deliveredRow as HTMLElement).getByRole('button', { name: 'Preview notes/demo.txt in sidebar' }))
+      .toBeDefined()
+    // The native-open action stays absent while the Host desktop is unavailable, so the row carries
+    // no menu control at all rather than a disabled one.
+    expect(within(deliveredRow as HTMLElement).queryByRole(
+      'button', { name: 'More ways to open' },
+    )).toBeNull()
+
+    // Read-only navigation reaches earlier history: the shipped control loads the previous page from
+    // the Host over the same allowlisted read the rest of the transcript uses.
+    expect(document.body.textContent).not.toContain('问题 50')
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: 'Load earlier' })) })
+    await waitFor(() => {
+      expect(document.body.textContent).toContain('问题 50')
+    }, { timeout: 15_000 })
+
+    // An attachment the transcript carries is readable too: the page reads the durable bytes through
+    // the allowlisted attachment read and displays them the same way the owner's page does.
+    await waitFor(() => {
+      const images = [...document.querySelectorAll<HTMLImageElement>('img')]
+      expect(images.some(image => image.src.startsWith('data:image/png')
+        || image.src.startsWith('blob:')))
+        .toBe(true)
+    }, { timeout: 15_000 })
+
+    // A file path in the transcript stays readable, and opening it names the reader's own situation:
+    // this page claims workspace-file addresses with its own tab type, whose body states that a share
+    // hands over paths rather than contents, and the page must not hand the reader the type
+    // registry's wiring message instead.
+    const fileLinks = [...document.querySelectorAll<HTMLButtonElement>('button[class*="fileLink"]')]
+    expect(fileLinks.length).toBeGreaterThan(0)
+    await act(async () => { fireEvent.click(fileLinks[0] as HTMLButtonElement) })
+    await waitFor(() => {
+      expect(document.body.textContent).toContain('This page cannot open workspace files')
+    }, { timeout: 15_000 })
+    expect(document.body.textContent).not.toContain('no registered tab type claims')
+  }, 120_000)
+})
diff --git a/packages/experimental/liveshare/tests/viewer-source-write-unavailable-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-source-write-unavailable-artifact.client.spec.tsx
new file mode 100644
index 0000000000..fed93774bd
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-source-write-unavailable-artifact.client.spec.tsx
@@ -0,0 +1,93 @@
+// @vitest-environment jsdom
+/**
+ * The assembled viewer page stopping a run on a share whose Session the Host cannot confine: what the
+ * reader's own Stop states, and that none of the Host's own words for it reaches the page.
+ */
+
+import { act, cleanup, fireEvent, screen, waitFor } from '@testing-library/react'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import { installViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+describe('Assembled liveshare viewer page stopping a run the Host cannot confine', () => {
+  it('states the refusal with its code on the Stop it offered', async () => {
+    // The fixture answers every cancel with the refusal a Host sends when it cannot confine the Session
+    // it would drive, so the one action a running Session offers is exercised against it. This bench
+    // carries the refusal through the Client's own RPC double; the flat body a Host writes on the wire
+    // is the transport suite's case.
+    const inputFixture = installViewerInputFixture()
+    const owned: { disposeOwner?: () => void; stopRelay?: () => Promise<void> } = {}
+    onTestFinished(async () => {
+      await inputFixture.dispose()
+      await owned.stopRelay?.()
+      owned.disposeOwner?.()
+      cleanup()
+      vi.unstubAllGlobals()
+      document.body.replaceChildren()
+      document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+    })
+    history.replaceState(null, '', '/?shareId=share-1&fixture&fixtureCancelCode=source-write-unavailable')
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    Object.defineProperty(navigator, 'languages', { value: ['zh-CN'], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: 'zh-CN', configurable: true })
+    const owner = createFixtureFaces({ viewerSourceGrant: () => ({ sessionMode: 'write' }),
+      cancelRefusal: 'source-write-unavailable' })
+    owned.disposeOwner = () => { owner.dispose() }
+    owned.stopRelay = installViewerRelay({
+      owner: owner.rpc,
+      other: (url) => {
+        if (url.includes('/__liveshare/context')) {
+          return Promise.resolve(Response.json({
+            shareId: 'share-1',
+            sessionId: 'fx-alpha',
+            ownerDisplayName: 'Owner',
+            capabilities: { readOnly: false, sessionMode: 'write' },
+          }))
+        }
+        if (url.endsWith('/health')) return Promise.resolve(Response.json({ release_id: 'release-7' }))
+        return Promise.reject(new Error(`Unexpected request: ${url}`))
+      },
+    })
+
+    await act(async () => {
+      await inputFixture.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' })
+    })
+
+    // The shared Session is running and this page may write it, so the run it shows is the one its
+    // Stop is for.
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash"]')).not.toBeNull()
+    }, { timeout: 30_000 })
+    const stop = await screen.findByRole('button', { name: '停止生成' }, { timeout: 15_000 })
+    await act(async () => { fireEvent.click(stop) })
+
+    // The reader sees the Host's message with its stable code, and nothing here states that the run was
+    // ended or taken back.
+    await waitFor(() => {
+      expect(document.body.textContent).toContain(
+        'cancelling this Session failed: token=FIXTURE_ONLY_NOT_A_REAL_CREDENTIAL; file=/private/unshared-fixture/credential.txt; url=https://internal.invalid/creds (source-write-unavailable)',
+      )
+    }, { timeout: 15_000 })
+    // The run the Host kept running still has its own action, so the page never reports an end that did
+    // not happen.
+    expect(screen.getByRole('button', { name: '停止生成' })).toBeDefined()
+  }, 180_000)
+})
diff --git a/packages/experimental/liveshare/tests/viewer-staging.client.spec.ts b/packages/experimental/liveshare/tests/viewer-staging.client.spec.ts
new file mode 100644
index 0000000000..eaa23f1f7c
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-staging.client.spec.ts
@@ -0,0 +1,48 @@
+/** Fail-safe staging cleanup: never remove an unset, parent, or out-of-parent path. */
+
+import { existsSync } from 'node:fs'
+import { mkdtempSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join, resolve } from 'node:path'
+import { describe, expect, it, vi } from 'vitest'
+import { allocateViewerStaging, disposeViewerStaging } from './viewer-staging.client.ts'
+
+describe('viewer staging cleanup', () => {
+  it('allocates a parent that did not exist and a unique child under it', () => {
+    const root = mkdtempSync(join(tmpdir(), 'viewer-staging-root-'))
+    try {
+      const parent = join(root, 'not-yet', 'lib')
+      const dir = allocateViewerStaging(parent, 'viewer-bundle-')
+      expect(dir.startsWith(parent)).toBe(true)
+      expect(existsSync(dir)).toBe(true)
+      disposeViewerStaging(dir, parent)
+      expect(existsSync(dir)).toBe(false)
+    } finally {
+      rmSync(root, { recursive: true, force: true })
+    }
+  })
+
+  it('never removes an unset path, the parent, dot, or an out-of-parent path', () => {
+    const remove = vi.fn()
+    const parent = '/staging/parent'
+
+    expect(disposeViewerStaging(undefined, parent, remove)).toBe(false)
+    expect(disposeViewerStaging('', parent, remove)).toBe(false)
+    expect(disposeViewerStaging('.', parent, remove)).toBe(false)
+    expect(disposeViewerStaging(parent, parent, remove)).toBe(false)
+    expect(disposeViewerStaging('/staging/parent-ish/evil', parent, remove)).toBe(false)
+    expect(remove).not.toHaveBeenCalled()
+  })
+
+  it('removes a valid child exactly once', () => {
+    const remove = vi.fn()
+    const parent = '/staging/parent'
+
+    const child = '/staging/parent/viewer-bundle-x'
+    expect(disposeViewerStaging(child, parent, remove)).toBe(true)
+    expect(remove).toHaveBeenCalledTimes(1)
+    // The disposer hands the remover the resolved target: on Windows the POSIX literals above name
+    // the same directory with a drive and backslashes, so the expectation resolves them too.
+    expect(remove).toHaveBeenCalledWith(resolve(child))
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-staging.client.ts b/packages/experimental/liveshare/tests/viewer-staging.client.ts
new file mode 100644
index 0000000000..37458d9c90
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-staging.client.ts
@@ -0,0 +1,39 @@
+/** Process-private staging dirs for generated viewer page test inputs, with a fail-safe disposer. */
+
+import { mkdirSync, mkdtempSync, rmSync } from 'node:fs'
+import { join, resolve, sep } from 'node:path'
+
+/**
+ * Ensure the parent exists, then allocate a unique staging directory under it. The mkdtemp call is
+ * what returns the value the caller records for cleanup, so a failure to allocate leaves the caller's
+ * recorded path unset rather than pointing at an unrelated directory.
+ * @param parentDir - Directory that must exist as the staging parent.
+ * @param prefix - Basename prefix for the unique directory.
+ * @returns The absolute staging directory created for this run.
+ */
+export function allocateViewerStaging(parentDir: string, prefix: string): string {
+  mkdirSync(parentDir, { recursive: true })
+  return mkdtempSync(join(parentDir, prefix))
+}
+
+/**
+ * Remove one staging directory only when it is a freshly allocated child of the allowed parent.
+ * Refuses an unset path, the parent itself, or anything outside the parent, so a partial
+ * beforeAll (allocation failed, path never recorded) can never resolve to `.` or the workspace.
+ * @param dir - Recorded staging directory, or an unset value when allocation did not happen.
+ * @param allowedParent - The staging parent this test owns.
+ * @param remove - Remover, injectable for tests; defaults to a recursive fs removal.
+ * @returns True only when a valid child directory was removed.
+ */
+export function disposeViewerStaging(
+  dir: string | undefined,
+  allowedParent: string,
+  remove: (path: string) => void = (path) => { rmSync(path, { recursive: true, force: true }) },
+): boolean {
+  if (dir === undefined || dir === '') return false
+  const target = resolve(dir)
+  const parent = resolve(allowedParent)
+  if (target === parent || !target.startsWith(parent + sep)) return false
+  remove(target)
+  return true
+}
diff --git a/packages/experimental/liveshare/tests/viewer-status.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-status.client.spec.tsx
new file mode 100644
index 0000000000..e36debbf73
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-status.client.spec.tsx
@@ -0,0 +1,268 @@
+// @vitest-environment jsdom
+/**
+ * What the viewer states when it cannot show the shared Session, and what it offers the reader to do.
+ *
+ * A reader who opens a share has one page: an offline owner, a stopped or expired share, a lapsed
+ * sign-in, a link that is wrong, and a Relay that cannot be reached must each read as themselves, and
+ * each must leave the reader something to do.
+ */
+
+import { Context } from '@deepseek-ai/cordis'
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-store'
+import { act, cleanup } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { apply, inject } from '../src/client/viewer-session-plugin.ts'
+import {
+  readViewerStatus,
+  viewerStatus,
+  viewerStatusFacts,
+  type ViewerStatus,
+  type ViewerStatusFacts,
+} from '../src/client/viewer-status.ts'
+import { mountViewerStatusBanner } from '../src/client/viewer-status-banner.ts'
+import bannerCss from '../src/client/viewer-status-banner.module.css'
+import { NS } from '../src/client/locales.ts'
+import {
+  provideViewerConnection, provideViewerLocale, provideViewerRemoteAccess,
+} from './viewer-plugin-services.client.ts'
+
+const STATUS_ID = 'liveshare-viewer-status'
+const MESSAGE_ID = 'liveshare-viewer-status-message'
+
+/** One row of the contract: the signal the page read, the state it states, its words and its way out. */
+interface StatusRow {
+  readonly facts: ViewerStatusFacts
+  readonly status: Exclude<ViewerStatus, 'ready'>
+  readonly message: string
+  /** Action the state offers, absent for a state whose way out is stated in words alone. */
+  readonly action?: { readonly kind: string; readonly label: string }
+}
+
+const ROWS: readonly StatusRow[] = [
+  {
+    facts: { notFound: true },
+    status: 'invalid',
+    message: '链接无效，或这条分享已被删除。',
+    action: { kind: 'directory', label: '回到分享列表' },
+  },
+  {
+    facts: { ownerOnline: false },
+    status: 'offline',
+    message: '分享者当前不在线，会自动重连。',
+    action: { kind: 'retry', label: '重试' },
+  },
+  {
+    facts: { reason: 'share-stopped' },
+    status: 'stopped',
+    message: '分享者已停止这条分享。',
+    action: { kind: 'directory', label: '回到分享列表' },
+  },
+  {
+    facts: { reason: 'share-expired' },
+    status: 'expired',
+    message: '这条分享已过期。',
+    action: { kind: 'directory', label: '回到分享列表' },
+  },
+  {
+    facts: { unauthenticated: true },
+    status: 'reauthenticate',
+    message: '登录已过期。',
+    action: { kind: 'sign-in', label: '重新登录' },
+  },
+  {
+    facts: { unreachable: true },
+    status: 'unavailable',
+    message: '服务暂时不可用，正在重试。',
+    action: { kind: 'reload', label: '刷新' },
+  },
+]
+
+afterEach(() => {
+  cleanup()
+  vi.unstubAllGlobals()
+  document.getElementById(STATUS_ID)?.remove()
+  delete (globalThis as { __DSH_LIVESHARE_VIEWER__?: unknown }).__DSH_LIVESHARE_VIEWER__
+  viewerStatusFacts.set({})
+  viewerStatus.set('connecting')
+})
+
+describe('viewer status', () => {
+  it('reads each signal as its own state, with the share\u2019s end and the reader\u2019s sign-in first', () => {
+    expect(readViewerStatus({ ownerOnline: true })).toBe('ready')
+    for (const row of ROWS) expect(readViewerStatus(row.facts), row.status).toBe(row.status)
+    // A share the owner ended states that, whatever the connection looks like.
+    expect(readViewerStatus({ reason: 'share-stopped', ownerOnline: false })).toBe('stopped')
+    // The reader's own sign-in outranks a connection fact, and a missing share outranks both.
+    expect(readViewerStatus({ unauthenticated: true, ownerOnline: false })).toBe('reauthenticate')
+    expect(readViewerStatus({ notFound: true, unauthenticated: true })).toBe('invalid')
+  })
+
+  it('states every state in the reader\u2019s language with a way out, and nothing while the share reads', () => {
+    const asked: string[] = []
+    const locale = provideViewerLocale(new Context())
+    const banner = mountViewerStatusBanner(document, (action) => { asked.push(action) }, locale.bind(NS))
+    const element = document.getElementById(STATUS_ID)
+    expect(element).not.toBeNull()
+
+    for (const row of ROWS) {
+      banner.update(row.status)
+      // No state is an empty shell: each one states itself in the reader's own words.
+      expect(document.getElementById(MESSAGE_ID)?.textContent, row.status).toBe(row.message)
+      const button = element?.querySelector<HTMLButtonElement>('button')
+      if (row.action === undefined) {
+        expect(button, row.status).toBeNull()
+        continue
+      }
+      expect(button?.dataset.liveshareAction, row.status).toBe(row.action.kind)
+      expect(button?.textContent, row.status).toBe(row.action.label)
+      button?.click()
+    }
+    expect(asked).toEqual(ROWS.flatMap(row => row.action === undefined ? [] : [row.action.kind]))
+
+    banner.update('ready')
+    expect(element?.textContent).toBe('')
+    expect(element?.style.display).toBe('none')
+    banner.dispose()
+    expect(document.getElementById(STATUS_ID)).toBeNull()
+  })
+
+  it('dresses the banner from the token sheet rather than inline colors', () => {
+    const locale = provideViewerLocale(new Context())
+    const banner = mountViewerStatusBanner(document, () => {}, locale.bind(NS))
+    const element = document.getElementById(STATUS_ID)
+    expect(element).not.toBeNull()
+    // The module class carries the token colors with their system-color fallbacks; inline styles keep
+    // only the placement and type the served page needs before any stylesheet loads.
+    expect(element!.classList.contains(bannerCss.banner ?? '')).toBe(true)
+    expect(element!.style.border).toBe('')
+    expect(element!.style.background).toBe('')
+    expect(element!.style.color).toBe('')
+    banner.dispose()
+  })
+
+  it('mounts a banner that still places itself when its stylesheet never loaded', async () => {
+    // A served page can miss the module stylesheet; the element then carries no class at all and
+    // keeps only the inline placement that does not depend on the sheet.
+    vi.resetModules()
+    vi.doMock('../src/client/viewer-status-banner.module.css', () => ({ default: {} }))
+    const unstyled = await import('../src/client/viewer-status-banner.ts')
+    const locale = provideViewerLocale(new Context())
+    const banner = unstyled.mountViewerStatusBanner(document, () => {}, locale.bind(NS))
+    try {
+      const element = document.getElementById(STATUS_ID)
+      expect(element).not.toBeNull()
+      expect(element?.className).toBe('')
+      expect(element?.style.position).toBe('fixed')
+    } finally {
+      banner.dispose()
+      vi.doUnmock('../src/client/viewer-status-banner.module.css')
+      vi.resetModules()
+    }
+  })
+
+  it('renders the share\u2019s own answers instead of an empty page', async () => {
+    let context: unknown = { capabilities: { sessionMode: 'view', online: false } }
+    let notFound = false
+    vi.stubGlobal('fetch', vi.fn((input: unknown) => {
+      const url = String(input)
+      if (url.includes('/__liveshare/context')) {
+        return Promise.resolve(notFound ? new Response('', { status: 404 }) : Response.json(context))
+      }
+      return Promise.resolve(new Response('', { status: 404 }))
+    }))
+    ;(globalThis as { __DSH_LIVESHARE_VIEWER__?: unknown }).__DSH_LIVESHARE_VIEWER__ = {
+      shareId: 'share-1',
+      sessionId: 'fx-shared',
+      basePath: '',
+    }
+    const ctx = new Context()
+    const locale = provideViewerLocale(ctx)
+    const fiber = ctx.plugin({ inject: [...inject], apply })
+    ctx.provide('sessions', {
+      list: {
+        getSnapshot: () => createSnapshotStore<{ byId: Record<string, unknown> }>({ byId: {} }).getSnapshot(),
+        subscribe: () => () => {},
+      },
+      open: () => {},
+      scope: () => undefined,
+    } as never)
+    ctx.provide('uiWorkspace', { openSession: () => {} } as never)
+    provideViewerRemoteAccess(ctx)
+    provideViewerConnection(ctx)
+    await fiber.await()
+    try {
+      await vi.waitFor(() => {
+        expect(document.getElementById(MESSAGE_ID)?.textContent).toBe('分享者当前不在线，会自动重连。')
+      })
+
+      // The statement is plain DOM rather than a slot-rendered surface, so a language switch repaints
+      // it through the locale face instead of leaving the previous language on screen.
+      locale.setLocale('en')
+      await vi.waitFor(() => {
+        expect(document.getElementById(MESSAGE_ID)?.textContent)
+          .toBe('The owner is offline right now; this page reconnects automatically.')
+      })
+      locale.setLocale('zh')
+
+      // The share itself ends: the page states the owner's own action, not the connection.
+      context = { capabilities: { sessionMode: 'view', sessionModeReason: 'share-stopped', online: true } }
+      await act(async () => { window.dispatchEvent(new Event('focus')) })
+      await vi.waitFor(() => {
+        expect(document.getElementById(MESSAGE_ID)?.textContent).toBe('分享者已停止这条分享。')
+      })
+
+      // A reader the Relay does not know: the link is the thing to check, and the page says so.
+      notFound = true
+      await act(async () => { window.dispatchEvent(new Event('focus')) })
+      await vi.waitFor(() => {
+        expect(document.getElementById(MESSAGE_ID)?.textContent).toBe('链接无效，或这条分享已被删除。')
+      })
+    } finally {
+      await fiber.dispose()
+    }
+  })
+
+  it('never asks the retired admission endpoints, and states only what it read', async () => {
+    const asked: string[] = []
+    vi.stubGlobal('fetch', vi.fn((input: unknown) => {
+      asked.push(String(input))
+      // A reader the Relay does not admit cannot read the share's own answer at all.
+      return Promise.resolve(new Response('', { status: 403 }))
+    }))
+    ;(globalThis as { __DSH_LIVESHARE_VIEWER__?: unknown }).__DSH_LIVESHARE_VIEWER__ = {
+      shareId: 'share-1',
+      sessionId: '',
+      basePath: '',
+    }
+    const ctx = new Context()
+    provideViewerLocale(ctx)
+    const fiber = ctx.plugin({ inject: [...inject], apply })
+    ctx.provide('sessions', {
+      list: {
+        getSnapshot: () => createSnapshotStore<{ byId: Record<string, unknown> }>({ byId: {} }).getSnapshot(),
+        subscribe: () => () => {},
+      },
+      open: () => {},
+      scope: () => undefined,
+    } as never)
+    ctx.provide('uiWorkspace', { openSession: () => {} } as never)
+    provideViewerRemoteAccess(ctx)
+    provideViewerConnection(ctx)
+    await fiber.await()
+    try {
+      await vi.waitFor(() => {
+        // An unreadable share is not confirmed read-only, and no pending-approval state exists to claim.
+        expect(document.getElementById(MESSAGE_ID)?.textContent).toBe('正在连接分享…')
+        expect(asked.length).toBeGreaterThan(0)
+      })
+      expect(document.querySelector('button[data-liveshare-action="request-access"]')).toBeNull()
+      for (const url of asked) {
+        for (const gone of ['request-access', 'request-status', 'decide-access', 'grant-access', 'revoke-access']) {
+          expect(url, gone).not.toContain(gone)
+        }
+      }
+    } finally {
+      await fiber.dispose()
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-stream-batching.spec.ts b/packages/experimental/liveshare/tests/viewer-stream-batching.spec.ts
new file mode 100644
index 0000000000..9e2d546456
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-stream-batching.spec.ts
@@ -0,0 +1,89 @@
+/**
+ * Stream delivery granularity on the owner side: one answer carries the values a burst already
+ * queued, in order and with nothing lost, instead of spending one round trip per value.
+ */
+
+import { describe, expect, it } from 'vitest'
+import { STREAM_BATCH_MAX } from '../src/read-budgets.ts'
+import { createViewerReadService, type ViewerReadDeps } from '../src/host/viewer-read.ts'
+import { READER, readerConnection } from './viewer-read-peers.ts'
+
+/** Values one burst delivers, matching the delta count a two-second answer was measured to emit. */
+const BURST = 253
+
+/** A gateway whose one stream has `count` values queued the moment it is opened. */
+function burstGateway(count: number): NonNullable<ViewerReadDeps['gateway']> {
+  return {
+    wireStream: {
+      async open(): Promise<AsyncIterable<unknown>> {
+        return (async function* () {
+          for (let seq = 0; seq < count; seq++) yield { seq }
+        })()
+      },
+      failure(error: unknown): { readonly code: string; readonly message: string; readonly details: object } {
+        return { code: String(error), message: String(error), details: {} }
+      },
+    },
+  }
+}
+
+describe('Liveshare viewer stream batching', () => {
+  it('[P0] answers a queued burst in bounded batches, in order and without losing a value', async () => {
+    const read = createViewerReadService({
+      connection: readerConnection().connection, gateway: burstGateway(BURST), sharedSessionId: () => 'session-1',
+    })
+    expect((await read.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow',
+      payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } }, READER)).status).toBe(200)
+
+    const seen: number[] = []
+    const batchSizes: number[] = []
+    let answers = 0
+    for (;;) {
+      const answer = await read.answer('share-1', { op: 'stream-next', id: 1 }, READER)
+      const body = answer.body as { values?: readonly { seq: number }[]; end?: true; pending?: true }
+      if (body.end === true) break
+      if (body.pending === true) continue
+      const values = body.values ?? []
+      answers += 1
+      batchSizes.push(values.length)
+      for (const value of values) seen.push(value.seq)
+    }
+    read.close()
+
+    // Every value arrived exactly once, in the order the stream produced it.
+    expect(seen).toEqual(Array.from({ length: BURST }, (_unused, seq) => seq))
+    // One answer carries several values — that is the whole point — and never more than the bound.
+    expect(Math.max(...batchSizes)).toBeGreaterThan(1)
+    expect(Math.max(...batchSizes)).toBeLessThanOrEqual(STREAM_BATCH_MAX)
+    // The burst costs a handful of round trips instead of one per value.
+    expect(answers).toBeLessThanOrEqual(Math.ceil(BURST / STREAM_BATCH_MAX) + 1)
+  })
+
+  it('[P0] answers a stream that produces one value at a time with that single value', async () => {
+    const gateway = {
+      wireStream: {
+        async open(): Promise<AsyncIterable<unknown>> {
+          return (async function* () {
+            yield { seq: 0 }
+            await new Promise((resolve) => { setTimeout(resolve, 50) })
+            yield { seq: 1 }
+          })()
+        },
+        failure(error: unknown): { readonly code: string; readonly message: string; readonly details: object } {
+          return { code: String(error), message: String(error), details: {} }
+        },
+      },
+    }
+    const read = createViewerReadService({ connection: readerConnection().connection, gateway, sharedSessionId: () => 'session-1' })
+    expect((await read.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow',
+      payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } }, READER)).status).toBe(200)
+
+    // The first value answers alone: nothing is queued behind it, so no value waits on the batch
+    // window, and the second value is read by the poll after it.
+    const first = await read.answer('share-1', { op: 'stream-next', id: 1 }, READER) as { body: { values?: readonly unknown[] } }
+    expect(first.body.values).toEqual([{ seq: 0 }])
+    const second = await read.answer('share-1', { op: 'stream-next', id: 1 }, READER) as { body: { values?: readonly unknown[] } }
+    expect(second.body.values).toEqual([{ seq: 1 }])
+    read.close()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-stream-ownership.spec.ts b/packages/experimental/liveshare/tests/viewer-stream-ownership.spec.ts
new file mode 100644
index 0000000000..77b482f9fb
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-stream-ownership.spec.ts
@@ -0,0 +1,174 @@
+/**
+ * Stream ownership on the owner side: one page's stream ids are its own numbering, so two pages
+ * that number their streams the same way used to cancel each other. Distinct ids must stay
+ * independent, and a replacement on one id must be visible rather than silent.
+ */
+
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import { describe, expect, it, vi } from 'vitest'
+import { createViewerReadService, type ViewerReadGateway } from '../src/host/viewer-read.ts'
+import { READER, readerConnection, type ReaderConnection } from './viewer-read-peers.ts'
+
+/** One gateway that opens streams with the real five-argument signature and records each call. */
+function recordingGateway() {
+  const aborted: string[] = []
+  const opened: Array<{
+    readonly endpoint: string
+    readonly payload: unknown
+    readonly uplink: AsyncIterable<unknown>
+    readonly peer: PeerScope
+    readonly signal: AbortSignal
+  }> = []
+  const gateway: ViewerReadGateway = {
+    wireStream: {
+      async open(endpoint, payload, uplink, peer, signal): Promise<AsyncIterable<unknown>> {
+        opened.push({ endpoint, payload, uplink, peer, signal })
+        signal.addEventListener('abort', () => { aborted.push(endpoint) }, { once: true })
+        return (async function* () {
+          let seq = 0
+          while (!signal.aborted) {
+            await new Promise((resolve) => { setTimeout(resolve, 0) })
+            seq += 1
+            yield { endpoint, seq }
+          }
+        })()
+      },
+      failure(error: unknown): { readonly code: string; readonly message: string; readonly details: object } {
+        return { code: String(error), message: String(error), details: {} }
+      },
+    },
+  }
+  return { aborted, opened, gateway }
+}
+
+function service(gateway: ViewerReadGateway, readers: ReaderConnection = readerConnection()) {
+  return createViewerReadService({ connection: readers.connection, gateway, sharedSessionId: () => 'session-1' })
+}
+
+/** One gateway whose stream rejects on its first poll, as a broken owner-side read does. */
+function failingGatewayFixture() {
+  const gateway: ViewerReadGateway = {
+    wireStream: {
+      open(): Promise<AsyncIterable<unknown>> {
+        return Promise.resolve((async function* () {
+          yield await Promise.reject(new Error('signal timed out'))
+        })())
+      },
+      failure(error: unknown): { readonly code: string; readonly message: string; readonly details: object } {
+        const code = error instanceof Error ? error.message : 'unknown'
+        return { code, message: code, details: {} }
+      },
+    },
+  }
+  return { gateway }
+}
+
+describe('Liveshare viewer stream ownership', () => {
+  it('[P0] keeps two pages\u2019 streams independent when their ids differ', async () => {
+    const { aborted, gateway } = recordingGateway()
+    const read = service(gateway)
+
+    // Page one opens stream 1 and reads from it.
+    expect((await read.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow',
+      payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } }, READER)).status).toBe(200)
+    expect(await read.answer('share-1', { op: 'stream-next', id: 1 }, READER)).toMatchObject({ status: 200 })
+
+    // Page two opens stream 2: page one's stream must survive and keep answering.
+    expect((await read.answer('share-1', { op: 'stream-open', id: 2, endpoint: 'session/follow',
+      payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } }, READER)).status).toBe(200)
+    expect(await read.answer('share-1', { op: 'stream-next', id: 1 }, READER)).toMatchObject({ status: 200 })
+    expect(await read.answer('share-1', { op: 'stream-next', id: 2 }, READER)).toMatchObject({ status: 200 })
+    expect(aborted).toEqual([])
+    read.close()
+  })
+
+  it('[P1] reports a live stream replaced by the same id instead of dropping it silently', async () => {
+    const { gateway } = recordingGateway()
+    const warn = vi.spyOn(console, 'warn').mockImplementation(() => undefined)
+    const read = service(gateway)
+
+    await read.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow',
+      payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } }, READER)
+    await read.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow',
+      payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } }, READER)
+
+    // The line names the share, stream id, endpoint, and whether the replaced stream had a poll in
+    // flight, so a replacement is diagnosable without reading any payload.
+    expect(warn).toHaveBeenCalledWith(expect.stringContaining(
+      'viewer stream replaced share=share-1 streamId=1 endpoint=session/follow hadPending=false',
+    ))
+    warn.mockRestore()
+    read.close()
+  })
+
+  it('[P1] names a broken stream and reports its id as gone so the page can re-open', async () => {
+    const { gateway } = failingGatewayFixture()
+    const warn = vi.spyOn(console, 'warn').mockImplementation(() => undefined)
+    const read = service(gateway)
+
+    await read.answer('share-1', { op: 'stream-open', id: 7, endpoint: 'session/control', payload: {} }, READER)
+    const failed = await read.answer('share-1', { op: 'stream-next', id: 7 }, READER)
+    // The viewer's Remote failure keeps its own body; the log carries the cause and the id.
+    expect(failed).toMatchObject({ status: 200, body: { failure: { code: 'signal timed out' } } })
+    expect(warn).toHaveBeenCalledWith(expect.stringContaining(
+      'viewer stream failed share=share-1 streamId=7',
+    ))
+    expect(warn).toHaveBeenCalledWith(expect.stringContaining('signal timed out'))
+
+    // A released stream answers the carrier code, which is what tells the page to re-open rather
+    // than poll an id that will never produce another value.
+    expect(await read.answer('share-1', { op: 'stream-next', id: 7 }, READER))
+      .toMatchObject({ status: 404, body: { error: 'stream-not-found' } })
+    warn.mockRestore()
+    read.close()
+  })
+})
+
+describe('Liveshare owner viewer stream opener', () => {
+  it('[P0] lands the uplink, the reader\u2019s Peer, and the signal in their own arguments', async () => {
+    const { opened, gateway } = recordingGateway()
+    const readers = readerConnection()
+    const read = service(gateway, readers)
+
+    expect((await read.answer('share-1', { op: 'stream-open', id: 1, endpoint: 'session/follow',
+      payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } }, READER)).status).toBe(200)
+    const stream = opened[0]
+    // Position three is an iterable the opener may consume, not the cancellation signal a
+    // three-argument call would land there; the read-only viewer sends no item.
+    expect(typeof stream?.uplink[Symbol.asyncIterator]).toBe('function')
+    expect(await stream?.uplink[Symbol.asyncIterator]().next()).toEqual({ value: undefined, done: true })
+    // Position four is the Peer the reader speaks for, so the Gateway decides the stream as that reader.
+    expect(stream?.peer).toBe(readers.peers[0])
+    expect(readers.principalOf(0)).toEqual({ kind: 'share-viewer', shareId: 'share-1', actor: READER })
+    // Position five is the owner's own controller signal, so cancellation still reaches the opener.
+    expect(stream?.signal).toBeInstanceOf(AbortSignal)
+    expect(stream?.signal.aborted).toBe(false)
+
+    const answer = await read.answer('share-1', { op: 'stream-next', id: 1 }, READER)
+    const values = (answer.body as { values?: readonly { endpoint: string; seq: number }[] }).values ?? []
+    expect(values[0]).toEqual({ endpoint: 'session/follow', seq: 1 })
+
+    read.close()
+    expect(stream?.signal.aborted).toBe(true)
+    // Closing the reader also ends the Peer, so nothing the Gateway still holds for it keeps running.
+    await vi.waitFor(() => { expect(stream?.peer.signal.aborted).toBe(true) })
+  })
+
+  it('[P1] opens one reader\u2019s streams on one Peer and another reader\u2019s on its own', async () => {
+    const { opened, gateway } = recordingGateway()
+    const readers = readerConnection()
+    const read = service(gateway, readers)
+    const other = { ...READER, tenantId: 'tenant-b' }
+    const follow = (id: number) => ({ op: 'stream-open' as const, id, endpoint: 'session/follow',
+      payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } })
+
+    expect((await read.answer('share-1', follow(1), READER)).status).toBe(200)
+    expect((await read.answer('share-1', follow(2), READER)).status).toBe(200)
+    // The same subject in another tenant is another reader.
+    expect((await read.answer('share-1', follow(3), other)).status).toBe(200)
+
+    expect(opened.map(stream => stream.peer)).toEqual([readers.peers[0], readers.peers[0], readers.peers[1]])
+    expect(readers.principalOf(1)).toEqual({ kind: 'share-viewer', shareId: 'share-1', actor: other })
+    read.close()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-stream-reclaim.spec.ts b/packages/experimental/liveshare/tests/viewer-stream-reclaim.spec.ts
new file mode 100644
index 0000000000..035dc8fa27
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-stream-reclaim.spec.ts
@@ -0,0 +1,104 @@
+/**
+ * Reclaiming streams no page polls any more.
+ *
+ * A page that closed, was discarded, or went offline leaves its streams behind: the client's cancel
+ * travels the same request/poll channel as its reads and is lost with it, so nothing else tells the
+ * owner the reader is gone. Idleness is that signal, and the reader releases the stream together with
+ * the upstream subscription the owner's gateway opened for it.
+ */
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import {
+  VIEWER_STREAM_IDLE_TTL_MS,
+  createViewerReadService,
+  type ViewerReadDeps,
+} from '../src/host/viewer-read.ts'
+import { READER as viewer, readerConnection } from './viewer-read-peers.ts'
+
+/**
+ * One gateway yielding forever without timers, so a poll resolves on its own value.
+ *
+ * The sweep is driven by fake timers, and a generator that waited on a timer of its own would make the
+ * poll's answer depend on advancing them.
+ */
+function gateway(signals: AbortSignal[]): NonNullable<ViewerReadDeps['gateway']> {
+  return {
+    wireStream: {
+      async open(_endpoint, _payload, _uplink, _peer, signal): Promise<AsyncIterable<unknown>> {
+        signals.push(signal)
+        return (async function* () {
+          let seq = 0
+          for (;;) yield { seq: seq++ }
+        })()
+      },
+      failure(error: unknown): { readonly code: string; readonly message: string; readonly details: object } {
+        return { code: String(error), message: String(error), details: {} }
+      },
+    },
+  }
+}
+
+/** One open stream and the signal its opener was given, under one reader. */
+async function openedStream(id: number) {
+  const signals: AbortSignal[] = []
+  const read = createViewerReadService({
+    connection: readerConnection().connection, gateway: gateway(signals), sharedSessionId: () => 'session-1',
+  })
+  const opened = await read.answer('share-1', { op: 'stream-open', id, endpoint: 'session/follow',
+    payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } }, viewer)
+  expect(opened.status).toBe(200)
+  return { read, signals }
+}
+
+afterEach(() => {
+  vi.useRealTimers()
+})
+
+describe('Liveshare viewer stream reclamation', () => {
+  it('[P0] releases a stream nothing polls once its idle TTL passes', async () => {
+    vi.useFakeTimers()
+    const { read, signals } = await openedStream(4)
+
+    // Nothing has polled this stream, but its idle TTL has not passed: the page may still be reading.
+    await vi.advanceTimersByTimeAsync(VIEWER_STREAM_IDLE_TTL_MS - 1_000)
+    expect(signals[0]?.aborted).toBe(false)
+
+    // Past the TTL the next sweep releases it, and the poll that follows reports the stream it lost.
+    await vi.advanceTimersByTimeAsync(VIEWER_STREAM_IDLE_TTL_MS + 60_000)
+    expect(signals[0]?.aborted).toBe(true)
+    expect(await read.answer('share-1', { op: 'stream-next', id: 4 }, viewer))
+      .toMatchObject({ status: 404, body: { error: 'stream-not-found' } })
+    read.close()
+  })
+
+  it('keeps a stream a page is still polling, however long it stays open', async () => {
+    vi.useFakeTimers()
+    const { read, signals } = await openedStream(5)
+
+    await vi.advanceTimersByTimeAsync(VIEWER_STREAM_IDLE_TTL_MS - 1_000)
+    // The poll is what keeps the stream: its own idle clock starts again from this answer.
+    expect((await read.answer('share-1', { op: 'stream-next', id: 5 }, viewer)).status).toBe(200)
+    await vi.advanceTimersByTimeAsync(VIEWER_STREAM_IDLE_TTL_MS - 1_000)
+    expect(signals[0]?.aborted).toBe(false)
+    expect((await read.answer('share-1', { op: 'stream-next', id: 5 }, viewer)).status).toBe(200)
+    read.close()
+  })
+
+  it('reclaims the streams of one share without touching another share’s', async () => {
+    vi.useFakeTimers()
+    const signals: AbortSignal[] = []
+    const read = createViewerReadService({
+      connection: readerConnection().connection, gateway: gateway(signals), sharedSessionId: () => 'session-1',
+    })
+    // Two shares one page reads side by side: the closed page abandons both, and both are reclaimed.
+    for (const shareId of ['share-1', 'share-2']) {
+      expect((await read.answer(shareId, { op: 'stream-open', id: 6, endpoint: 'session/follow',
+        payload: { args: { request: { address: { kind: 'session', sessionId: 'session-1' } } } } }, viewer)).status)
+        .toBe(200)
+    }
+
+    await vi.advanceTimersByTimeAsync(VIEWER_STREAM_IDLE_TTL_MS + 60_000)
+    expect(signals.map(signal => signal.aborted)).toEqual([true, true])
+    read.close()
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-target-admission.spec.ts b/packages/experimental/liveshare/tests/viewer-target-admission.spec.ts
new file mode 100644
index 0000000000..dcd86e21fb
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-target-admission.spec.ts
@@ -0,0 +1,315 @@
+/**
+ * Which Session a reader's call is authorized for is the Session the real Connection and Gateway act on.
+ *
+ * The reader reads the `share-viewer` policy's write rules before it prepares or dispatches a prompt or
+ * cancel, and every dispatched call speaks for the reader's own Peer, so the Gateway decides the same
+ * policy on the resources it resolves from the call's actual wire arguments.
+ */
+import { Context } from '@deepseek-ai/cordis'
+import { AttachmentId, type ImageAttachmentRef } from '../../../attachment/attachment/src/index.ts'
+import { createUserMessage } from '@deepseek-ai/dsh-llm'
+import { SessionId } from '@deepseek-ai/dsh-session'
+import { mountAgentLoopTestDependencies, mountAgentLoopTestHarness } from '@deepseek-ai/dsh-agent-loop-testkit'
+import { TypertGatewayService } from '@deepseek-ai/dsh-api-gateway'
+import RemoteAccessService from '@deepseek-ai/dsh-api-remote-access'
+import { TypertRegistry } from '@deepseek-ai/dsh-typert-registry'
+import type { PeerScope } from '@deepseek-ai/dsh-typert-protocol'
+import { mkdtempSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import { HostConnectionService } from '../../../client/connection/src/rpc-host.ts'
+import { BrowserAuth } from '../../../client/connection/src/browser-auth.ts'
+import { provideBrowserCredentials } from '../../../api/gateway/tests/browser-credentials.ts'
+import { createSessionTestController } from '../../../api/session-controller/tests/test-remote.ts'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import { READ_ONLY_FORK_CEILING, type ForkShareState, type ViewerSessionMode } from '../src/host/fork-policy.ts'
+import { createViewerAccessPolicy, readerWriteRefusal, type ViewerAccessFacts } from '../src/host/viewer-access-policy.ts'
+import { createViewerReadService } from '../src/host/viewer-read.ts'
+
+const actor = { providerId: 'fixture', tenantId: 'tenant', subjectId: 'viewer' }
+const source = SessionId('source')
+const child = SessionId('own-child')
+const privateSession = SessionId('private-session')
+
+function call(method: string, request: object) {
+  return { op: 'call' as const, path: `/api/${method}`, body: {
+    type: 'client-request', rpcId: `rpc-${method}`, method, payload: { args: { request } },
+  } }
+}
+
+/** The Gateway's refusal of one call the policy denied, as the reader relays it. */
+function deniedBy(action: string, reason: string) {
+  return {
+    status: 200,
+    body: { type: 'server-response', result: { ok: false, error: { code: 'remote-access/denied', details: { action, reason } } } },
+  }
+}
+
+async function harness(mode: ViewerSessionMode = 'write') {
+  const directory = mkdtempSync(join(tmpdir(), 'liveshare-target-'))
+  onTestFinished(() => { rmSync(directory, { recursive: true, force: true }) })
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  await ctx.plugin(TypertRegistry)
+  await mountAgentLoopTestDependencies(ctx)
+  const driver = await mountAgentLoopTestHarness(ctx)
+  provideBrowserCredentials(ctx)
+  const auth = await BrowserAuth.create(ctx, ctx.credentials, 1)
+  new HostConnectionService(ctx, [], auth)
+  // Provided on the root Context that also constructs the Session controller below, which re-reads
+  // access from that Context's own fiber while a Gateway call runs.
+  new RemoteAccessService(ctx)
+  await ctx.plugin(TypertGatewayService)
+  const controller = await createSessionTestController(ctx, {
+    cwd: process.cwd(), defaultModelSelection: () => ({ provider: 'unused', model: 'unused' }),
+  })
+  ctx.on('agent/pre-step', async (_input, next) => {
+    const decision = await next()
+    return decision.kind === 'enter' ? { ...decision, messages: [] } : decision
+  })
+  const agents = await Promise.all([source, child, privateSession].map(id => driver.create(id, {}, { cwd: process.cwd() })))
+  const privateAgent = agents[2]!
+  const image: ImageAttachmentRef = { attachmentId: AttachmentId('private-image'),
+    mediaType: 'image/png', bytes: 1, width: 1, height: 1 }
+  privateAgent.session.append('user/message', createUserMessage({
+    content: [{ type: 'image', attachment: image }], source: { kind: 'user' },
+  }), { surfaceOp: 'append' })
+  const readImage = vi.fn(async (ref: ImageAttachmentRef) => ({ ref, data: Uint8Array.of(42) }))
+  ctx.attachments.readImage = readImage
+  const followup = vi.spyOn(privateAgent, 'followup')
+  const cancelled = vi.spyOn(privateAgent, 'cancel')
+  const attachment = vi.spyOn(controller, 'attachment')
+  const forks = new ForkRegistry(join(directory, 'forks.json'))
+  await forks.record({ shareId: 'share', sourceSessionId: source, childSessionId: child,
+    creator: actor, boundary: 0, createdAt: '2026-10-12T00:00:00Z' })
+  forks.installEnforcement(child, READ_ONLY_FORK_CEILING)
+  const share: ForkShareState = { shareId: 'share', sessionId: source, sessionMode: mode,
+    allowsFork: mode !== 'view', viewerAdmitted: true, stopped: false }
+  const accessFacts: ViewerAccessFacts = {
+    share: shareId => shareId === 'share' ? share : undefined,
+    viewerAdmitted: () => true,
+    sourceConfined: () => true,
+    forks,
+    workspaces: () => [],
+    declaredCapabilities: () => [],
+  }
+  ctx.remoteAccess.registerPolicy('share-viewer', createViewerAccessPolicy(accessFacts))
+  const shared = ctx.connection.createSharedFetchHandler('/api')
+  const dispatch = vi.fn((request: Request, peer: PeerScope) => shared.fetch(request, peer))
+  const peers: PeerScope[] = []
+  const reader = createViewerReadService({
+    sharedSessionId: () => source, forks,
+    forkStateOf: () => share,
+    sourceConfined: () => true, viewerStillAdmitted: () => true,
+    connection: {
+      createSharedFetchHandler: () => ({ requestBodyMode: request => shared.requestBodyMode(request), fetch: dispatch }),
+      createPeer: (options) => {
+        const peer = ctx.connection.createPeer(options)
+        peers.push(peer)
+        return peer
+      },
+    },
+    gateway: ctx.typertGateway,
+    writeRefusal: (viewer, action, sessionId, concrete) => readerWriteRefusal(accessFacts, viewer, action, sessionId, concrete),
+  })
+  onTestFinished(() => { reader.close() })
+  return { ctx, reader, dispatch, peers, followup, cancelled, attachment, readImage, controller, image, agents }
+}
+
+describe('viewer target admission through the share-viewer policy and the real Gateway', () => {
+  it.each(['session/prompt', 'session/cancel'])(
+    'refuses %s naming a Session this reader cannot see before anything is dispatched', async (method) => {
+      const fixture = await harness()
+      const request = { sessionId: privateSession, requestId: 'attack', mode: 'queue',
+        content: [{ type: 'text', text: 'must not enter private inbox' }],
+        address: { kind: 'session', sessionId: source } }
+      expect(await fixture.reader.answer('share', call(method, request), actor))
+        .toMatchObject({ status: 403, body: { error: 'fork-unknown-child' } })
+      expect(fixture.dispatch).not.toHaveBeenCalled()
+      expect(fixture.followup).not.toHaveBeenCalled()
+      expect(fixture.cancelled).not.toHaveBeenCalled()
+    },
+  )
+
+  it.each(['session/prompt', 'session/cancel'])(
+    'refuses %s carrying both a Session id and an address before the target child runs', async (method) => {
+      const fixture = await harness()
+      const childAgent = fixture.agents[1]
+      if (childAgent === undefined) throw new Error('the harness created no child Agent')
+      const followup = vi.spyOn(childAgent, 'followup')
+      const cancel = vi.spyOn(childAgent, 'cancel')
+      onTestFinished(() => { followup.mockRestore(); cancel.mockRestore() })
+      const answer = await fixture.reader.answer('share', call(method, {
+        sessionId: child,
+        address: { kind: 'session', sessionId: source },
+        ...(method === 'session/prompt'
+          ? { requestId: 'both-identities', mode: 'queue', content: [{ type: 'text', text: 'private-marker' }] }
+          : {}),
+      }), actor)
+      // The two identities reach the Gateway, whose Session resolver refuses the body as invalid
+      // resources, so the child's operation never runs and no request content comes back.
+      expect(answer).toMatchObject(deniedBy(method, 'resource-invalid'))
+      expect(JSON.stringify(answer)).not.toContain('private-marker')
+      expect(fixture.dispatch).toHaveBeenCalledOnce()
+      expect(followup).not.toHaveBeenCalled()
+      expect(cancel).not.toHaveBeenCalled()
+    },
+  )
+
+  it.each(['session/state', 'session/events'])(
+    'admits %s for the visible source and refuses a hidden Session', async (method) => {
+      const fixture = await harness()
+      const request = (sessionId: typeof source) => method === 'session/events'
+        ? { address: { kind: 'session', sessionId }, throughSeq: 0 }
+        : { sessionId }
+      expect(await fixture.reader.answer('share', call(method, request(source)), actor))
+        .toMatchObject({ status: 200 })
+      expect(await fixture.reader.answer('share', call(method, request(privateSession)), actor))
+        .toMatchObject(deniedBy(method, 'liveshare/read-only'))
+    },
+  )
+
+  it('refuses a fork of a Session other than the shared one before anything is dispatched', async () => {
+    const fixture = await harness()
+    const answer = await fixture.reader.answer('share', call('session/fork', {
+      sessionId: privateSession, address: { kind: 'session', sessionId: source },
+    }), actor)
+    expect(answer).toMatchObject({ status: 403, body: { error: 'source-session-mismatch' } })
+    expect(fixture.dispatch).not.toHaveBeenCalled()
+  })
+
+  it('names the policy’s refusal for another reader’s child, and drives both Sessions of a view share', async () => {
+    const write = await harness()
+    const prompt = (sessionId: string) => call('session/prompt', { sessionId, requestId: 'refused', mode: 'queue',
+      content: [{ type: 'text', text: 'refused' }] })
+    expect(await write.reader.answer('share', prompt(child), { ...actor, tenantId: 'other-tenant' }))
+      .toMatchObject({ status: 403, body: { error: 'fork-viewer-mismatch' } })
+    expect(write.dispatch).not.toHaveBeenCalled()
+
+    // The view tier drives the shared Session and the branch this reader made: the confined layer is what
+    // decides writing, and this reader's own branch runs under its own read-only ceiling.
+    const view = await harness('view')
+    for (const sessionId of [source, child]) {
+      expect(await view.reader.answer('share', prompt(sessionId), actor)).toMatchObject({ status: 200 })
+    }
+    expect(view.dispatch).toHaveBeenCalledTimes(2)
+  })
+
+  it('lets the Gateway refuse a hidden attachment without disclosing bytes', async () => {
+    const fixture = await harness()
+    for (const [request, reason] of [
+      // Two identities in one body are invalid resources before any policy reads either.
+      [{ sessionId: privateSession, attachmentId: 'private-image', address: { kind: 'session', sessionId: source } },
+        'resource-invalid'],
+      [{ attachmentId: 'private-image', address: {} }, 'liveshare/read-only'],
+    ] as const) {
+      const answer = await fixture.reader.answer('share', call('session/attachment', request), actor)
+      expect(answer).toMatchObject(deniedBy('session/attachment', reason))
+      expect(JSON.stringify(answer)).not.toContain('Kg==')
+    }
+    expect(fixture.dispatch).toHaveBeenCalledTimes(2)
+    expect(fixture.attachment).not.toHaveBeenCalled()
+    expect(fixture.readImage).not.toHaveBeenCalled()
+    // The image is genuinely readable to the Owner; viewer denial is not an empty fixture.
+    expect(await fixture.controller.attachment({ sessionId: privateSession, attachment: fixture.image }))
+      .toMatchObject({ data: 'Kg==' })
+  })
+
+  it.each(['session/page', 'session/follow'])(
+    'refuses %s naming a hidden Session or carrying two identities', async (method) => {
+      const fixture = await harness()
+      for (const [request, reason] of [
+        // A body carrying both `sessionId` and `address` names two Session identities, which the
+        // Gateway's Session resolver refuses as invalid resources.
+        [{ sessionId: source, address: {} }, 'resource-invalid'],
+        [{ sessionId: source, address: { kind: 'session', sessionId: privateSession } }, 'resource-invalid'],
+        // A subagent address names the child's own Session, here one no share reader can see.
+        [{ address: { kind: 'subagent', parentSessionId: source, childSessionId: privateSession, mode: 'continuable' } },
+          'liveshare/read-only'],
+        // A lone Session identity names a Session this reader cannot see.
+        [{ sessionId: privateSession }, 'liveshare/read-only'],
+      ] as const) {
+        if (method === 'session/page') {
+          expect(await fixture.reader.answer('share', call(method, { ...request, throughSeq: 0 }), actor))
+            .toMatchObject(deniedBy(method, reason))
+          continue
+        }
+        expect(await fixture.reader.answer('share', { op: 'stream-open', id: 1, endpoint: method,
+          payload: { args: { request } } }, actor))
+          .toMatchObject({ status: 200, body: { failure: { code: 'remote-access/denied', details: { action: method, reason } } } })
+      }
+    },
+  )
+
+  it('lets the Session Controller refuse a subagent address naming the reader\u2019s fork under another parent', async () => {
+    const fixture = await harness()
+    const address = { kind: 'subagent', parentSessionId: privateSession, childSessionId: child, mode: 'continuable' }
+    const answer = await fixture.reader.answer('share', call('session/page', { address, throughSeq: 0 }), actor)
+    expect(answer).toMatchObject({
+      status: 200,
+      body: { result: { ok: false, error: { code: 'subagent/unauthorized', details: { childSessionId: child } } } },
+    })
+  })
+
+  it.each(['session/attachment', 'session/fork', 'session/prompt', 'session/cancel'])(
+    'fails closed when %s carries no Session identity', async (method) => {
+      const fixture = await harness()
+      const answer = await fixture.reader.answer('share', call(method, { address: { sessionId: source } }), actor)
+      // Fork is decided by the host before the policy: a body naming no Session is a malformed request,
+      // not a permissions answer. Every other method reaches the policy and is refused there.
+      expect(answer).toMatchObject(method === 'session/fork'
+        ? { status: 400, body: { error: 'fork-session-required' } }
+        : deniedBy(method, 'liveshare/read-only'))
+      expect(fixture.followup).not.toHaveBeenCalled()
+      expect(fixture.cancelled).not.toHaveBeenCalled()
+      expect(fixture.attachment).not.toHaveBeenCalled()
+    },
+  )
+
+  it('keeps typed source and own-child requests available as the reader’s Peer', async () => {
+    const fixture = await harness()
+    for (const sessionId of [source, child]) {
+      expect(await fixture.reader.answer('share', call('session/prompt', { sessionId,
+        requestId: `valid-${sessionId}`, mode: 'queue', content: [{ type: 'text', text: 'valid' }] }), actor))
+        .toMatchObject({ status: 200, body: { result: { ok: true, value: { accepted: true } } } })
+      const id = sessionId === source ? 1 : 2
+      expect(await fixture.reader.answer('share', { op: 'stream-open', id,
+        endpoint: 'session/follow', payload: { args: { request: { address: { kind: 'session', sessionId } } } } }, actor))
+        .toMatchObject({ status: 200 })
+      expect(await fixture.reader.answer('share', { op: 'stream-next', id }, actor))
+        .toMatchObject({ status: 200, body: { values: [{ type: 'snapshot', header: { id: sessionId } }] } })
+      await fixture.reader.answer('share', { op: 'stream-cancel', id }, actor)
+      expect(await fixture.reader.answer('share', call('session/page', {
+        address: { kind: 'session', sessionId }, throughSeq: 0,
+      }), actor)).toMatchObject({ status: 200, body: { result: { ok: true } } })
+    }
+    await Promise.all(fixture.agents.map(agent => agent.whenIdle()))
+    expect(fixture.followup).not.toHaveBeenCalled()
+    // Every call and stream spoke for one Peer: this reader of this share.
+    expect(fixture.peers).toHaveLength(1)
+    expect(fixture.peers[0]?.principal).toEqual({ kind: 'share-viewer', shareId: 'share', actor })
+    expect(fixture.dispatch.mock.calls.every(([, peer]) => peer === fixture.peers[0])).toBe(true)
+  })
+
+  // `skills/list` is unavailable to this harness (the skill catalog plugin is not mounted), so the
+  // Session resolver coverage for it stays with the generic Gateway and resolver tests.
+  it.each([
+    ['session/rename', { title: 'renamed-child' }, child],
+    // The fork pre-screen refuses a target other than the share's Session before dispatch, so the
+    // two-identity body must name the source to reach the Gateway.
+    ['session/fork', {}, source],
+    ['session/projections', {}, child],
+  ] as const)('refuses %s whose request names two Session identities', async (method, extra, target) => {
+    const fixture = await harness()
+    const answer = await fixture.reader.answer('share', call(method, {
+      sessionId: target,
+      address: { kind: 'session', sessionId: source },
+      ...extra,
+    }), actor)
+    // The Gateway's Session resolver refuses two identities as invalid resources before any operation runs.
+    expect(answer).toMatchObject(deniedBy(method, 'resource-invalid'))
+    expect(fixture.dispatch).toHaveBeenCalledOnce()
+  })
+
+})
diff --git a/packages/experimental/liveshare/tests/viewer-tier-scope.spec.ts b/packages/experimental/liveshare/tests/viewer-tier-scope.spec.ts
new file mode 100644
index 0000000000..70a6fc9f01
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-tier-scope.spec.ts
@@ -0,0 +1,228 @@
+/**
+ * What a shared Session may reach while its sandbox is mounted.
+ *
+ * The sandbox confines the turns a share viewer starts: those read through the confined replacement, and
+ * a write-tier Session adds the bounded write this host installs. Everything the grant does not contain is
+ * refused on the way in — a read outside the workspace, the write name at the view tier, and any tool that
+ * is neither replacement — which is what keeps "may drive this Session" from meaning "may run anything".
+ * The owner's own turns keep the deployment's tools until the layer is released.
+ */
+
+import { mkdirSync, mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+import { provideWorkingDirectoryFixture } from '@deepseek-ai/dsh-agent-loop-testkit'
+import { Context } from '@deepseek-ai/cordis'
+import { createScope, type Scope } from '@deepseek-ai/dsh-scope'
+import type { Agent } from '@deepseek-ai/dsh-agent'
+import { SESSION_FORMAT_VERSION, Session, SessionId } from '@deepseek-ai/dsh-session'
+import { ToolCallId } from '@deepseek-ai/dsh-llm'
+import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
+import ToolRuntime from '@deepseek-ai/dsh-tools'
+import LocalFileSystem from '@deepseek-ai/dsh-fs-local'
+import * as ToolFs from '@deepseek-ai/dsh-tool-fs'
+import type { FsTarget } from '@deepseek-ai/dsh-fs'
+import {
+  installSourceSessionAccess,
+  type SourceSessionAccessInstallation,
+} from '../src/host/fork-enforcement.ts'
+import type { ForkToolExecution } from '../src/host/fork-tool-guard.ts'
+import { executeOneTool } from './tool-call.ts'
+import * as NativeToolExecutor from '@deepseek-ai/dsh-tool-executor-native'
+
+const testToolSignal = new AbortController().signal
+const session = 'session-shared'
+
+let tree: string
+let root: string
+let ctx: Context
+let scope: Scope
+let shared: Agent
+let access: SourceSessionAccessInstallation | undefined
+let calls = 0
+
+/** The host's own argument reader: the shipped filesystem tools name their path `file_path`. */
+function describeTool(execution: ForkToolExecution) {
+  const args = execution.arguments
+  const path = typeof args === 'object' && args !== null && 'file_path' in args
+    ? (args as { readonly file_path?: unknown }).file_path
+    : undefined
+  return typeof path === 'string'
+    ? { paths: [path], noFileEffect: false }
+    : { paths: undefined, noFileEffect: false }
+}
+
+/** A session-scoped Agent stand-in the real tool runtime can drive without an AgentLoop. */
+function standInAgent(id: SessionId, cwd: string): Omit<Agent, 'ctx'> {
+  const agentSession = Session.create(id, [], {
+    version: SESSION_FORMAT_VERSION, id, createdAt: 0, cwd, isSeeded: false,
+  })
+  const unsupported = (): never => { throw new Error('this test Agent does not support Inbox mutations') }
+  return {
+    id,
+    options: {},
+    model: { current: () => undefined, select: () => {} },
+    session: agentSession,
+    inbox: {
+      nextTurn: [], nextStep: [], clear: unsupported, append: unsupported,
+      prepend: unsupported, replace: unsupported, remove: unsupported, splice: unsupported,
+    },
+    status: 'idle',
+    send: () => {},
+    followup: () => {},
+    steer: () => {},
+    inject: () => {},
+    cancel: () => {},
+    whenIdle: () => Promise.resolve(),
+    runMaintenance: task => task(new AbortController().signal),
+  }
+}
+
+/**
+ * Install the source-session access layer for one tier.
+ * @param tier - `view` installs the confined read alone, `write` adds this host's bounded write.
+ * @param grantedRoot - Root the grant contains.
+ * @returns The installation.
+ */
+async function install(
+  tier: 'view' | 'write',
+  grantedRoot: FsTarget,
+  confined: () => boolean = () => true,
+): Promise<SourceSessionAccessInstallation> {
+  return installSourceSessionAccess({
+    sessionId: session,
+    context: scope.ctx,
+    scope: shared,
+    grantedRoot,
+    cwd: root,
+    resolvePolicy: () => ({ mode: 'workspace-write', workspaceRoot: root, sessionId: shared.session.id }),
+    fs: ctx.fs,
+    tools: ctx.tools,
+    describe: describeTool,
+    confinedExecution: confined,
+    ...(tier === 'write' ? { write: { mayWrite: () => true } } : {}),
+  })
+}
+
+beforeEach(async () => {
+  tree = mkdtempSync(join(tmpdir(), 'liveshare-tier-'))
+  root = join(tree, 'workspace')
+  mkdirSync(root, { recursive: true })
+  writeFileSync(join(root, 'inside.txt'), 'inside\n')
+  writeFileSync(join(tree, 'outside.txt'), 'outside\n')
+
+  ctx = new Context()
+  provideWorkingDirectoryFixture(ctx, root)
+  await ctx.plugin(SystemPrompt)
+  await ctx.plugin(ToolRuntime)
+  await ctx.plugin(NativeToolExecutor)
+  await ctx.plugin(LocalFileSystem, { cwd: root })
+  await ctx.plugin(ToolFs)
+
+  const key = standInAgent(SessionId(session), root)
+  let minted: Scope | undefined
+  await ctx.plugin(Object.assign(
+    (inner: Context) => { minted = createScope(inner, key) },
+    { inject: ['tools', 'fs', 'systemPrompt'] },
+  ))
+  if (minted === undefined) throw new Error('the shared Session scope was not minted')
+  scope = minted
+  shared = Object.assign(key, { ctx: scope.ctx })
+})
+
+afterEach(async () => {
+  try {
+    access?.dispose()
+    await scope.dispose()
+    await ctx.fiber.dispose()
+  } finally {
+    rmSync(tree, { recursive: true, force: true })
+  }
+})
+
+/** Run one tool as a turn of the shared Session. */
+function call(name: string, args: unknown) {
+  calls += 1
+  return executeOneTool(ctx, {
+    signal: testToolSignal,
+    callId: ToolCallId(`tier-${String(calls)}`),
+    name,
+    arguments: args,
+    agent: shared,
+  })
+}
+
+const text = (result: { readonly content: readonly { readonly type: string; readonly text?: string }[] }): string =>
+  result.content.filter(block => block.type === 'text').map(block => block.text).join('')
+
+describe('viewer tier scope', () => {
+  it('drives the shared Session at the view tier, and refuses a read outside the granted workspace', async () => {
+    access = await install('view', await ctx.fs.resolve(root))
+    expect(access.readConfined).toBe(true)
+    expect(access.writeConfined).toBe(false)
+
+    // Inside the grant the turn reads, which is what "drives the loop" means for this tier.
+    const inside = await call('read', { file_path: join(root, 'inside.txt') })
+    expect(inside.isError).toBe(false)
+    expect(text(inside)).toContain('inside')
+
+    // Outside it the read is refused, in the workspace it was granted.
+    const outside = await call('read', { file_path: join(tree, 'outside.txt') })
+    expect(outside.isError).toBe(true)
+    expect(text(outside)).toMatch(/not inside the workspace this session was granted/u)
+  })
+
+  it('refuses the write name at the view tier, and every other tool with it', async () => {
+    access = await install('view', await ctx.fs.resolve(root))
+
+    const write = await call('write', { file_path: join(root, 'inside.txt'), content: 'viewer\n' })
+    expect(write.isError).toBe(true)
+    expect(text(write)).toMatch(/may not use write/u)
+    expect(readFileSync(join(root, 'inside.txt'), 'utf8')).toBe('inside\n')
+
+    // A tool this installation never replaced is refused too, so a driven turn cannot reach around it.
+    const other = await call('read-directory', { path: root })
+    expect(other.isError).toBe(true)
+    expect(text(other)).toMatch(/may not use read-directory/u)
+  })
+
+  it('writes only inside the granted workspace at the write tier', async () => {
+    access = await install('write', await ctx.fs.resolve(root))
+    expect(access.writeConfined).toBe(true)
+
+    const inside = await call('write', { file_path: join(root, 'inside.txt'), content: 'viewer\n' })
+    expect(inside.isError).toBe(false)
+    expect(readFileSync(join(root, 'inside.txt'), 'utf8')).toBe('viewer\n')
+
+    const outside = await call('write', { file_path: join(tree, 'outside.txt'), content: 'viewer\n' })
+    expect(outside.isError).toBe(true)
+    expect(text(outside)).toMatch(/not inside the workspace this session was granted/u)
+    expect(readFileSync(join(tree, 'outside.txt'), 'utf8')).toBe('outside\n')
+  })
+
+  it('leaves the owner’s own turn on the deployment’s tools while the layer is mounted', async () => {
+    // The share bounds only the turns a viewer starts: an owner-started turn reads outside the granted
+    // workspace, and a viewer-started turn of the same layer is confined again.
+    const grantedRoot = await ctx.fs.resolve(root)
+    let viewerTurn = false
+    access = await install('view', grantedRoot, () => viewerTurn)
+
+    const ownerRead = await call('read', { file_path: join(tree, 'outside.txt') })
+    expect(ownerRead.isError).toBe(false)
+    expect(text(ownerRead)).toContain('outside')
+
+    viewerTurn = true
+    const viewerRead = await call('read', { file_path: join(tree, 'outside.txt') })
+    expect(viewerRead.isError).toBe(true)
+    expect(text(viewerRead)).toMatch(/not inside the workspace this session was granted/u)
+    expect(text(viewerRead)).not.toContain('outside\n')
+
+    // Releasing the layer restores the deployment's reach for every turn.
+    access.dispose()
+    const restored = await call('read', { file_path: join(tree, 'outside.txt') })
+    expect(restored.isError).toBe(false)
+    expect(text(restored)).toContain('outside')
+    access = undefined
+  })
+})
diff --git a/packages/experimental/liveshare/tests/viewer-write-artifact.client.spec.tsx b/packages/experimental/liveshare/tests/viewer-write-artifact.client.spec.tsx
new file mode 100644
index 0000000000..27dfe7fdd0
--- /dev/null
+++ b/packages/experimental/liveshare/tests/viewer-write-artifact.client.spec.tsx
@@ -0,0 +1,204 @@
+// @vitest-environment jsdom
+/**
+ * The assembled viewer page on a share whose owner granted writing: the shared Session itself becomes
+ * writable for that reader, while the Workspace around it and the owner's own management stay put.
+ */
+
+import { act, cleanup, fireEvent, screen, waitFor } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { createFixtureFaces } from './viewer-fixture.client.ts'
+import type { FixtureWorld } from './viewer-fixture.client.ts'
+import { installViewerInputFixture, promptEcho } from './viewer-input-fixture.client.ts'
+import type { ViewerInputFixture } from './viewer-input-fixture.client.ts'
+import { installViewerRelay } from './viewer-relay.client.ts'
+
+/** The generated contribution is a build artifact; the mount boundary is what this face test covers. */
+vi.mock('@deepseek-ai/dsh-experimental-liveshare/remote', () => ({ default: { package: '@deepseek-ai/dsh-experimental-liveshare', methods: {} } }))
+
+let inputFixture: ViewerInputFixture | undefined
+let owner: FixtureWorld | undefined
+let stopRelay: (() => Promise<void>) | undefined
+
+afterEach(async () => {
+  await inputFixture?.dispose()
+  await stopRelay?.()
+  owner?.dispose()
+  inputFixture = undefined
+  stopRelay = undefined
+  owner = undefined
+  cleanup()
+  vi.unstubAllGlobals()
+  document.body.replaceChildren()
+  document.head.querySelectorAll('style[data-plugin]').forEach((style) => { style.remove() })
+})
+
+class ResizeObserverStub {
+  observe(): void {}
+  disconnect(): void {}
+  unobserve(): void {}
+}
+
+describe('Assembled liveshare viewer page on a writable share', () => {
+  it('writes the shared Session, keeps the Workspace out of reach, and closes on a narrower mode', async () => {
+    inputFixture = installViewerInputFixture()
+    history.replaceState(null, '', '/?shareId=share-1&fixture')
+    const container = document.createElement('div')
+    container.id = 'root'
+    document.body.replaceChildren(container)
+    vi.stubGlobal('ResizeObserver', ResizeObserverStub)
+    vi.stubGlobal('EventSource', class { addEventListener(): void {} close(): void {} })
+    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) =>
+      window.setTimeout(() => { callback(0) }, 0))
+    vi.stubGlobal('cancelAnimationFrame', (id: number) => { clearTimeout(id) })
+    Object.defineProperty(navigator, 'languages', { value: ['zh-CN'], configurable: true })
+    Object.defineProperty(navigator, 'language', { value: 'zh-CN', configurable: true })
+    // The share starts read-only; the owner then widens it to writing and narrows it back while this
+    // page is open, so both directions reach the surfaces already on screen.
+    const answeredModes: string[] = []
+    let mode: { readonly sessionMode: string; readonly sessionModeReason?: string } = { sessionMode: 'view' }
+    let sourceGrant: { readonly sessionMode: string; readonly sessionModeReason?: string } | undefined
+    owner = createFixtureFaces({ viewerSourceGrant: () => sourceGrant ?? mode, controlledReply: true })
+    stopRelay = installViewerRelay({
+      owner: owner.rpc,
+      other: (url) => {
+        if (url.includes('/__liveshare/context')) {
+          answeredModes.push(mode.sessionMode)
+          owner?.refreshGrants()
+          return Promise.resolve(Response.json({
+            shareId: 'share-1',
+            sessionId: 'fx-alpha',
+            ownerDisplayName: 'Owner',
+            capabilities: { readOnly: true, ...mode },
+          }))
+        }
+        if (url.endsWith('/health')) return Promise.resolve(Response.json({ release_id: 'release-7' }))
+        return Promise.reject(new Error(`Unexpected request: ${url}`))
+      },
+    })
+
+    await act(async () => {
+      await inputFixture?.mount(container, { shareId: 'share-1', sessionId: 'fx-alpha' })
+    })
+
+    // The shared Session is running, and a read-only share leaves the composer inert with the reason
+    // stated: the owner's run is not this page's to end.
+    await waitFor(() => {
+      expect(document.querySelector('[data-sample="bash"]')).not.toBeNull()
+    }, { timeout: 30_000 })
+    expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    expect(document.body.textContent).toContain('仅可查看')
+    expect(screen.queryByRole('button', { name: '停止生成' })).toBeNull()
+
+    // The owner widens the share to writing: the same page keeps its transcript, and the composer
+    // becomes the reader's — editable, with the running turn's own action.
+    // Negative control: unknown Owner modes cannot unlock the source.
+    mode = { sessionMode: 'future-mode' }
+    await act(async () => { window.dispatchEvent(new Event('focus')) })
+    await waitFor(() => { expect(answeredModes).toContain('future-mode') }, { timeout: 15_000 })
+    expect(document.body.textContent).toContain('仅可查看')
+    expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    expect(owner.prompts).toHaveLength(0)
+
+    // Negative control: a writable page context cannot substitute for the owner's access snapshot,
+    // which still excludes prompting the source. The composer stays inert, and because the page's own
+    // mode does grant writing it states that the session cannot be driven rather than claiming read-only.
+    sourceGrant = { sessionMode: 'future-mode' }
+    mode = { sessionMode: 'write' }
+    await act(async () => { window.dispatchEvent(new Event('focus')) })
+    await waitFor(() => { expect(answeredModes).toContain('write') }, { timeout: 15_000 })
+    expect(document.body.textContent).toContain('无法被驱动')
+    expect(document.body.textContent).not.toContain('仅可查看')
+    expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    expect(owner.prompts).toHaveLength(0)
+    sourceGrant = undefined
+    await act(async () => { owner?.refreshGrants() })
+    await waitFor(() => {
+      expect(document.querySelector('[contenteditable="true"]')).not.toBeNull()
+    }, { timeout: 15_000 })
+    expect(screen.getByRole('button', { name: '停止生成' })).toBeDefined()
+    expect(document.body.textContent).not.toContain('仅可查看')
+    // What writing the Session does not carry: the Workspace around it stays the owner's, so no New
+    // Session, no Workspace verbs, and no reordering.
+    expect(screen.queryByRole('button', { name: '新会话' })).toBeNull()
+    expect(screen.queryByRole('button', { name: /^在“/u })).toBeNull()
+    const workspace = inputFixture.context().get('workspaces')?.list.getSnapshot().items[0]
+    if (workspace === undefined) throw new Error('shared Workspace is not listed')
+    const menus = inputFixture.context().get('contextMenus')
+    if (menus === undefined) throw new Error('context menus are not mounted')
+    const workspaceMenu = menus.resolve({ kind: 'workspace', value: {
+      workspaceId: workspace.workspaceId, path: workspace.path, displayTitle: workspace.title,
+    } })
+    await workspaceMenu.ready
+    expect(workspaceMenu.source.getSnapshot()).toEqual([])
+    workspaceMenu.dispose()
+    expect(document.querySelector('[role="treeitem"][draggable="true"]')).toBeNull()
+    // The Session's own verbs stay the owner's — the one this page may use there is the branch the
+    // mode grants — so the row's menu is not a second way into the owner's Session management: it
+    // opens on the branch verb and carries neither rename nor archive.
+    const sourceVerbs = screen.getByRole('button', { name: /^会话“/u })
+    await act(async () => { fireEvent.click(sourceVerbs) })
+    expect(await screen.findByRole('menuitem', { name: /^分叉会话/u })).toBeDefined()
+    expect(screen.queryByRole('menuitem', { name: '重命名' })).toBeNull()
+    expect(screen.queryByRole('menuitem', { name: '归档会话' })).toBeNull()
+    await act(async () => { fireEvent.keyDown(document, { key: 'Escape' }) })
+    await waitFor(() => { expect(screen.queryByRole('menu')).toBeNull() })
+
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: '停止生成' })) })
+    await waitFor(() => { expect(screen.queryByRole('button', { name: '停止生成' })).toBeNull() })
+    expect(owner.cancellations).toEqual(['fx-alpha'])
+
+    const userText = 'source artifact typing → Send 精确消息'
+    await inputFixture.send('fx-alpha', userText, '发送消息')
+    await waitFor(() => { expect(owner?.prompts).toHaveLength(1) })
+    const request = owner.prompts[0]
+    if (request === undefined) throw new Error('no source prompt at the scripted Owner')
+    expect(request).toMatchObject({ sessionId: 'fx-alpha', mode: 'queue', content: [{ type: 'text', text: userText }] })
+    expect(request.requestId).toMatch(/^[0-9a-f-]{36}$/u)
+    promptEcho(owner.history('fx-alpha'), request)
+    expect(document.querySelector('[contenteditable="true"]')?.textContent).toBe('')
+    await act(async () => { owner?.completeReply('fx-alpha') })
+    const replyText = `回声：${userText}。这是 fixture 的流式回复，用于验证打字机增长与定稿切换。`
+    await waitFor(() => { expect(document.body.textContent).toContain(replyText) }, { timeout: 15_000 })
+    expect(owner.history('fx-alpha').filter(event => event.type === 'assistant/message'
+      && event.data.message.content.some(block => block.type === 'text' && block.text === replyText))).toHaveLength(1)
+
+    await inputFixture.send('fx-alpha', 'held generation for Stop', '发送消息')
+    await waitFor(() => { expect(screen.getByRole('button', { name: '停止生成' })).toBeDefined() }, { timeout: 15_000 })
+    await act(async () => { fireEvent.click(screen.getByRole('button', { name: '停止生成' })) })
+    await waitFor(() => { expect(owner?.cancellations).toEqual(['fx-alpha', 'fx-alpha']) }, { timeout: 15_000 })
+    expect(owner.history('fx-alpha').at(-1)).toMatchObject({ type: 'turn/end', data: { reason: { kind: 'aborted' } } })
+
+    // The owner narrows the share to branching: the shared Session goes back to read-only — the
+    // composer is inert and states that fact, and the run's action is gone — while the branch this
+    // mode still grants stays on offer.
+    mode = { sessionMode: 'fork-readonly' }
+    await act(async () => { window.dispatchEvent(new Event('focus')) })
+    await waitFor(() => {
+      expect(document.querySelector('[contenteditable="true"]')).toBeNull()
+    }, { timeout: 15_000 })
+    expect(document.body.textContent).toContain('仅可查看')
+    expect(screen.queryByRole('button', { name: '停止生成' })).toBeNull()
+    expect(screen.getAllByRole('button', { name: '在新对话中分支' }).length).toBeGreaterThan(0)
+    const beforeDeniedSend = owner.prompts.length
+    const scope = inputFixture.context().get('sessions')?.scope('fx-alpha' as import('@deepseek-ai/dsh-session/types').SessionId)
+    if (scope === undefined) throw new Error('source scope is missing after downgrade')
+    // Negative control: even the live input API cannot submit after Owner downgrade.
+    await act(async () => {
+      const input = inputFixture?.context().get('conversation')?.input.for(scope)
+      if (input === undefined) throw new Error('real source input is missing after downgrade')
+      input.setDraft('must not reach Owner after downgrade')
+      input.submit('queue', 'click')
+    })
+    expect(owner.prompts).toHaveLength(beforeDeniedSend)
+
+    // The owner narrows it once more, to read-only: the branch goes with the mode, and the shared
+    // Session stays as read-only as it already was.
+    mode = { sessionMode: 'view', sessionModeReason: 'mode-view' }
+    await act(async () => { window.dispatchEvent(new Event('focus')) })
+    await waitFor(() => {
+      expect(screen.queryAllByRole('button', { name: '在新对话中分支' })).toHaveLength(0)
+    }, { timeout: 15_000 })
+    expect(document.body.textContent).toContain('仅可查看')
+    expect(screen.queryByRole('button', { name: '停止生成' })).toBeNull()
+  }, 180_000)
+})
diff --git a/packages/experimental/liveshare/tests/wire-json.spec.ts b/packages/experimental/liveshare/tests/wire-json.spec.ts
new file mode 100644
index 0000000000..e3fae3ad4f
--- /dev/null
+++ b/packages/experimental/liveshare/tests/wire-json.spec.ts
@@ -0,0 +1,31 @@
+/** The owner's JSON wire helpers: the body read answers a parsed value or nothing at all. */
+
+import { describe, expect, it } from 'vitest'
+import { isRecord, json, readJsonBody } from '../src/host/wire-json.ts'
+
+const request = (body: string): Request => new Request('http://owner.invalid/api', { method: 'POST', body })
+
+describe('owner wire JSON', () => {
+  it('answers a payload as JSON with its own status', async () => {
+    const response = json({ ok: true }, 201)
+
+    expect(response.status).toBe(201)
+    expect(response.headers.get('content-type')).toBe('application/json; charset=utf-8')
+    expect(await response.json()).toEqual({ ok: true })
+  })
+
+  it('reads a request body that is JSON, and answers nothing for one that is not', async () => {
+    expect(await readJsonBody(request('{"shareId":"share"}'))).toEqual({ shareId: 'share' })
+    // A route reads a malformed or absent body as no input, never as a rejection the page cannot see.
+    expect(await readJsonBody(request('{"shareId":'))).toBeUndefined()
+    expect(await readJsonBody(request(''))).toBeUndefined()
+  })
+
+  it('reads a wire payload as a record only when it is a non-array object', () => {
+    expect(isRecord({})).toBe(true)
+    expect(isRecord({ op: 'asset' })).toBe(true)
+    for (const refused of [null, [], ['asset'], 'asset', 0, undefined]) {
+      expect(isRecord(refused), String(refused)).toBe(false)
+    }
+  })
+})
diff --git a/packages/experimental/liveshare/tests/write-current-policy.spec.ts b/packages/experimental/liveshare/tests/write-current-policy.spec.ts
new file mode 100644
index 0000000000..7907bbf8d0
--- /dev/null
+++ b/packages/experimental/liveshare/tests/write-current-policy.spec.ts
@@ -0,0 +1,320 @@
+/** LiveShare's bounded write carries the Session's current policy through the real sandboxed filesystem. */
+
+import { existsSync, mkdirSync, mkdtempSync, readFileSync, readdirSync, realpathSync, rmSync, writeFileSync } from 'node:fs'
+import { join } from 'node:path'
+import { Context } from '@deepseek-ai/cordis'
+import { provideWorkingDirectoryFixture } from '@deepseek-ai/dsh-agent-loop-testkit'
+import type { Agent } from '@deepseek-ai/dsh-agent'
+import * as FsObservationPolicy from '@deepseek-ai/dsh-fs-observation-policy'
+import SandboxedFileSystem from '@deepseek-ai/dsh-fs-sandbox'
+import { ToolCallId } from '@deepseek-ai/dsh-llm'
+import SandboxPolicyService, { setSandboxMode } from '@deepseek-ai/dsh-sandbox-policy'
+import { createScope, type Scope } from '@deepseek-ai/dsh-scope'
+import { SESSION_FORMAT_VERSION, Session, SessionId } from '@deepseek-ai/dsh-session'
+import SessionProjectionRegistry from '@deepseek-ai/dsh-session-projection'
+import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
+import * as ToolFs from '@deepseek-ai/dsh-tool-fs'
+import ToolRuntime from '@deepseek-ai/dsh-tools'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { assertWorkspaceOutsideTemp, outsideTempWorkspaceParent } from '../../../../scripts/snapshot-workspace-parent.ts'
+import { installForkEnforcementForAgent, installSourceSessionAccess } from '../src/host/fork-enforcement.ts'
+import type { ForkToolExecution } from '../src/host/fork-tool-guard.ts'
+import { ForkRegistry } from '../src/host/fork-registry.ts'
+import { executeOneTool } from './tool-call.ts'
+import * as NativeToolExecutor from '@deepseek-ai/dsh-tool-executor-native'
+
+const viewer = { providerId: 'feishu', tenantId: 'tenant-a', subjectId: 'viewer' }
+type AccessKind = 'source' | 'fork'
+let base: string
+let root: string
+let deploymentRoot: string
+let ctx: Context
+let scope: Scope
+let agent: Agent
+let backend: SandboxedFileSystem
+let forks: ForkRegistry
+let admitted: boolean
+let disposeAccess: (() => void) | undefined
+let calls = 0
+
+function describeTool(execution: ForkToolExecution) {
+  const args = execution.arguments
+  const path = typeof args === 'object' && args !== null && 'file_path' in args ? args.file_path : undefined
+  return typeof path === 'string'
+    ? { paths: [path], noFileEffect: false }
+    : { paths: undefined, noFileEffect: false }
+}
+
+function standInAgent(id: SessionId, cwd: string): Omit<Agent, 'ctx'> {
+  const session = Session.create(id, [], {
+    version: SESSION_FORMAT_VERSION, id, createdAt: 0, cwd, isSeeded: false,
+  })
+  const unsupported = (): never => { throw new Error('this fixture does not drive an Inbox') }
+  return {
+    id, session, options: {}, status: 'idle',
+    model: { current: () => undefined, select: () => {} },
+    inbox: {
+      nextTurn: [], nextStep: [], clear: unsupported, append: unsupported,
+      prepend: unsupported, replace: unsupported, remove: unsupported, splice: unsupported,
+    },
+    send: () => {}, followup: () => {}, steer: () => {}, inject: () => {}, cancel: () => {},
+    whenIdle: () => Promise.resolve(),
+    runMaintenance: task => task(new AbortController().signal),
+  }
+}
+
+beforeEach(async ({ onTestFinished }) => {
+  base = realpathSync(mkdtempSync(join(outsideTempWorkspaceParent(), '.dsh-liveshare-policy-')))
+  ctx = new Context()
+  disposeAccess = undefined
+  onTestFinished(async () => {
+    try {
+      disposeAccess?.()
+      await ctx.fiber.dispose()
+    } finally {
+      vi.restoreAllMocks()
+      rmSync(base, { recursive: true, force: true })
+    }
+  })
+  // Neither workspace may inherit a platform-temp write grant: default A must not authorize Session B.
+  assertWorkspaceOutsideTemp(base)
+  root = join(base, 'session-b')
+  deploymentRoot = join(base, 'deployment-a')
+  mkdirSync(root)
+  mkdirSync(deploymentRoot)
+  writeFileSync(join(root, 'file.txt'), 'original\n')
+  provideWorkingDirectoryFixture(ctx, root)
+  await ctx.plugin(SystemPrompt)
+  await ctx.plugin(ToolRuntime)
+  await ctx.plugin(NativeToolExecutor)
+  await ctx.plugin(SessionProjectionRegistry)
+  await ctx.plugin(SandboxPolicyService, { mode: 'workspace-write', workspaceRoot: deploymentRoot })
+  await ctx.plugin(SandboxedFileSystem, { cwd: deploymentRoot })
+  await ctx.plugin(FsObservationPolicy)
+  await ctx.plugin(ToolFs)
+  if (!(ctx.fs instanceof SandboxedFileSystem)) throw new Error('the fixture requires the sandboxed filesystem')
+  backend = ctx.fs
+  const key = standInAgent(SessionId('liveshare-policy-session'), root)
+  let minted: Scope | undefined
+  await ctx.plugin(Object.assign(
+    (inner: Context) => { minted = createScope(inner, key) },
+    { inject: ['tools', 'fs', 'systemPrompt'] },
+  ))
+  if (minted === undefined) throw new Error('the Session scope was not minted')
+  scope = minted
+  agent = Object.assign(key, { ctx: scope.ctx })
+  setSandboxMode(agent.session, 'workspace-write')
+  forks = new ForkRegistry(join(base, 'forks.json'))
+  await forks.record({
+    childSessionId: agent.id, shareId: 'share-policy', sourceSessionId: 'owner-session',
+    boundary: 0, creator: viewer, createdAt: '2026-10-08T00:00:00.000Z',
+  })
+  admitted = true
+})
+
+async function install(kind: AccessKind): Promise<void> {
+  if (kind === 'source') {
+    const access = installSourceSessionAccess({
+      sessionId: agent.id, context: scope.ctx, scope: agent,
+      grantedRoot: await ctx.fs.resolve(root), cwd: root, fs: ctx.fs, tools: ctx.tools,
+      describe: describeTool,
+      write: { mayWrite: () => admitted },
+      resolvePolicy: () => ctx.sandboxPolicy.resolve({ session: agent.session }),
+      // The host refreshes the Session's grants before each operation; a share that stopped admitting
+      // this viewer makes that read fail, which refuses the write before it reaches the backend.
+      refreshAuthorization: async () => {
+        if (!admitted) throw new Error('share-not-found')
+      },
+    })
+    disposeAccess = () => { access.dispose() }
+    expect(access.readConfined).toBe(true)
+    expect(access.writeConfined).toBe(true)
+  } else {
+    disposeAccess = await installForkEnforcementForAgent(ctx, agent.id, scope.ctx, agent.session, {
+      forks, describe: describeTool, write: true, authorized: () => admitted,
+    })
+    expect(disposeAccess).toBeDefined()
+  }
+}
+
+function call(name: string, args: unknown) {
+  return executeOneTool(ctx, {
+    signal: new AbortController().signal,
+    callId: ToolCallId(`current-policy-${++calls}`), name, arguments: args, agent,
+  })
+}
+
+const text = (result: { readonly content: readonly { readonly type: string; readonly text?: string }[] }): string =>
+  result.content.filter(block => block.type === 'text').map(block => block.text).join('')
+
+/** Hold the actual write-intent waterfall before it delegates to the real observation policy. */
+function intentBarrier() {
+  const entered = Promise.withResolvers<undefined>()
+  const released = Promise.withResolvers<undefined>()
+  const dispose = scope.ctx.on('fs/write-intent', async (_target, _actor, next) => {
+    entered.resolve(undefined)
+    await released.promise
+    return next()
+  }, true)
+  return { entered: entered.promise, release: () => { released.resolve(undefined) }, dispose }
+}
+
+describe('LiveShare current write policy', () => {
+  it.each(['source', 'fork'] as const)('uses Session B rather than deployment A for %s publication', async (kind) => {
+    await install(kind)
+    const path = join(root, 'file.txt')
+    expect((await call('read', { file_path: path })).isError).toBe(false)
+    const publish = vi.spyOn(backend, 'writeText')
+    const result = await call('write', { file_path: path, content: 'viewer\n' })
+    expect(result.isError).toBe(false)
+    expect(readFileSync(path, 'utf8')).toBe('viewer\n')
+    expect(publish).toHaveBeenCalledOnce()
+    expect(publish.mock.calls[0]?.[4]).toEqual({
+      mode: 'workspace-write', workspaceRoot: root, sessionId: agent.session.id,
+    })
+    expect(readdirSync(deploymentRoot)).toEqual([])
+  })
+
+  it.each(['source', 'fork'] as const)('uses a policy change after %s installation rather than pinning its mode', async (kind) => {
+    setSandboxMode(agent.session, 'read-only')
+    await install(kind)
+    const path = join(root, 'file.txt')
+    expect((await call('read', { file_path: path })).isError).toBe(false)
+    expect((await call('write', { file_path: path, content: 'denied\n' })).isError).toBe(true)
+    expect(readFileSync(path, 'utf8')).toBe('original\n')
+    setSandboxMode(agent.session, 'workspace-write')
+    expect((await call('write', { file_path: path, content: 'current\n' })).isError).toBe(false)
+    expect(readFileSync(path, 'utf8')).toBe('current\n')
+  })
+
+  it.each([
+    { kind: 'source', present: true }, { kind: 'fork', present: true },
+    { kind: 'source', present: false }, { kind: 'fork', present: false },
+  ] as const)('denies $kind after policy narrows while write-intent is awaiting (present: $present)', async ({ kind, present }) => {
+    await install(kind)
+    const path = join(root, present ? 'file.txt' : 'new.txt')
+    if (present) expect((await call('read', { file_path: path })).isError).toBe(false)
+    const observed: string[] = []
+    scope.ctx.on('fs/observed', (target) => { observed.push(target.displayPath) })
+    const publish = vi.spyOn(backend, 'writeText')
+    const barrier = intentBarrier()
+    const pending = call('write', { file_path: path, content: 'must not publish\n' })
+    try {
+      await barrier.entered
+      expect(publish).not.toHaveBeenCalled()
+      setSandboxMode(agent.session, 'read-only')
+      barrier.release()
+      const result = await pending
+      expect(result.isError).toBe(true)
+      expect(text(result)).toMatch(/read-only/u)
+      expect(publish).toHaveBeenCalledOnce()
+      expect(publish.mock.calls[0]?.[4]).toEqual({
+        mode: 'read-only', workspaceRoot: root, sessionId: agent.session.id,
+      })
+      expect(readFileSync(join(root, 'file.txt'), 'utf8')).toBe('original\n')
+      if (!present) expect(existsSync(path)).toBe(false)
+      expect(readdirSync(root)).toEqual(['file.txt'])
+      expect(observed).toEqual([])
+    } finally {
+      barrier.release()
+      await pending
+      barrier.dispose()
+    }
+  })
+
+  it('[P0] denies a source write whose share narrows to view while write-intent is awaiting', async () => {
+    // The host's bounded write carries the share tier twice: before the intent waterfall and again after
+    // the final admission refresh. A share narrowed to view while the intent awaits must be refused by
+    // the second gate, before anything reaches the backend.
+    let tier: 'write' | 'view' = 'write'
+    let mayWriteChecks = 0
+    let refreshes = 0
+    const access = installSourceSessionAccess({
+      sessionId: agent.id, context: scope.ctx, scope: agent,
+      grantedRoot: await ctx.fs.resolve(root), cwd: root, fs: ctx.fs, tools: ctx.tools,
+      describe: describeTool,
+      write: { mayWrite: () => { mayWriteChecks += 1; return tier === 'write' } },
+      refreshAuthorization: async () => { refreshes += 1 },
+      resolvePolicy: () => ctx.sandboxPolicy.resolve({ session: agent.session }),
+    })
+    disposeAccess = () => { access.dispose() }
+    expect(access.writeConfined).toBe(true)
+    const path = join(root, 'file.txt')
+    expect((await call('read', { file_path: path })).isError).toBe(false)
+    const refreshesBefore = refreshes
+    const publish = vi.spyOn(backend, 'writeText')
+    const barrier = intentBarrier()
+    const pending = call('write', { file_path: path, content: 'must not publish\n' })
+    try {
+      await barrier.entered
+      expect(publish).not.toHaveBeenCalled()
+      expect(mayWriteChecks).toBe(1)
+      // The share narrows while the intent is held; the refresh before the final gate reads the new tier.
+      tier = 'view'
+      barrier.release()
+      const result = await pending
+      expect(result.isError).toBe(true)
+      expect(text(result)).toContain('does not allow writing this Session')
+      // The final gate asked again after the refresh; trusting the first verdict would have let this write
+      // reach fs.writeText.
+      expect(mayWriteChecks).toBe(2)
+      expect(refreshes - refreshesBefore).toBe(2)
+      expect(publish).not.toHaveBeenCalled()
+      expect(readFileSync(path, 'utf8')).toBe('original\n')
+      expect(readdirSync(root)).toEqual(['file.txt'])
+    } finally {
+      barrier.release()
+      await pending
+      barrier.dispose()
+    }
+  })
+
+  it.each(['source', 'fork'] as const)('denies %s after share revocation while write-intent is awaiting', async (kind) => {
+    await install(kind)
+    const path = join(root, 'file.txt')
+    expect((await call('read', { file_path: path })).isError).toBe(false)
+    const observed: string[] = []
+    scope.ctx.on('fs/observed', (target) => { observed.push(target.displayPath) })
+    const publish = vi.spyOn(backend, 'writeText')
+    const barrier = intentBarrier()
+    const pending = call('write', { file_path: path, content: 'revoked\n' })
+    try {
+      await barrier.entered
+      admitted = false
+      if (kind === 'fork') await forks.revokeShare('share-policy', '2026-10-08T00:01:00.000Z')
+      barrier.release()
+      const result = await pending
+      expect(result.isError).toBe(true)
+      expect(text(result)).toMatch(/share-not-found|no longer holds permission/u)
+      expect(publish).not.toHaveBeenCalled()
+      expect(readFileSync(path, 'utf8')).toBe('original\n')
+      expect(readdirSync(root)).toEqual(['file.txt'])
+      expect(observed).toEqual([])
+    } finally {
+      barrier.release()
+      await pending
+      barrier.dispose()
+    }
+  })
+
+  it('carries the Session’s current policy for a turn of the owner as well', async () => {
+    await install('source')
+    const path = join(root, 'owner.txt')
+    const ordinary = vi.spyOn(backend, 'writeText')
+    // The sandbox belongs to the Session: the owner's own turn writes through the same bounded path and
+    // under the same policy, not through the deployment's own write tool.
+    const result = await call('write', { file_path: path, content: 'owner\n' })
+    expect(result.isError).toBe(false)
+    expect(readFileSync(path, 'utf8')).toBe('owner\n')
+    expect(ordinary.mock.calls[0]?.[4]).toEqual({
+      mode: 'workspace-write', workspaceRoot: root, sessionId: agent.session.id,
+    })
+    // And the grant still bounds it: a path outside the Session's workspace is refused.
+    const outside = join(deploymentRoot, 'escaped.txt')
+    expect((await call('write', { file_path: outside, content: 'no\n' })).isError).toBe(true)
+    expect(existsSync(outside)).toBe(false)
+    setSandboxMode(agent.session, 'read-only')
+    expect((await call('write', { file_path: join(root, 'owner-denied.txt'), content: 'denied' })).isError).toBe(true)
+    expect(existsSync(join(root, 'owner-denied.txt'))).toBe(false)
+  })
+})
diff --git a/packages/experimental/liveshare/tsconfig.client.json b/packages/experimental/liveshare/tsconfig.client.json
new file mode 100644
index 0000000000..185bda18af
--- /dev/null
+++ b/packages/experimental/liveshare/tsconfig.client.json
@@ -0,0 +1,114 @@
+{
+  "extends": "../../../tsconfig.base.client.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types",
+    "tsBuildInfoFile": "lib/tsconfig.client.tsbuildinfo"
+  },
+  "files": [
+    "src/share-api-types.ts",
+    "src/endpoint-classification.ts",
+    "src/client/endpoint-classification.ts",
+    "src/client/index.ts",
+    "src/client/ShareAction.tsx",
+    "src/client/ShareDialog.tsx",
+    "src/client/owner-identity-login.ts",
+    "src/client/share-relay-address.ts",
+    "src/client/share-options.ts",
+    "src/client/ShareCreateForm.tsx",
+    "src/client/SharePermissionFields.tsx",
+    "src/client/ShareEditPanel.tsx",
+    "src/client/ShareCapabilitiesPicker.tsx",
+    "src/client/ManageSharesDialog.tsx",
+    "src/client/share-types.ts",
+    "src/client/locales.ts",
+    "src/client/user-origin.tsx",
+    "src/client/owner-display.ts",
+    "src/read-budgets.ts",
+    "src/owner-identity.ts",
+    "src/client/viewer-brand.tsx",
+    "src/client/viewer-model.tsx",
+    "src/client/viewer-permission.tsx",
+    "src/client/viewer-seat.tsx",
+    "src/client/owner-identity.ts",
+    "src/client/owner-login.ts",
+    "src/client/owner-routes.ts",
+    "src/client/owner-shares.ts",
+    "src/client/viewer-capabilities.ts",
+    "src/client/viewer-context.ts",
+    "src/client/viewer-session-plugin.ts",
+    "src/client/viewer-session-row.tsx",
+    "src/client/viewer-share-path.tsx",
+    "src/client/viewer-status.ts",
+    "src/client/viewer-status-banner.ts",
+    "src/client/viewer-session.ts",
+    "src/viewer-channel.ts",
+    "src/css-modules.d.ts",
+    "src/client/share-navigation.ts"
+  ],
+  "references": [
+    {
+      "path": "../../../vendor/cordis"
+    },
+    {
+      "path": "../../api/gateway/tsconfig.client.json"
+    },
+    {
+      "path": "../../api/remote-access/tsconfig.client.json"
+    },
+    {
+      "path": "../../api/remotes/tsconfig.client.json"
+    },
+    {
+      "path": "../../api/session-controller/tsconfig.client.json"
+    },
+    {
+      "path": "../../client/connection/tsconfig.client.json"
+    },
+    {
+      "path": "../../client/locale/tsconfig.client.json"
+    },
+    {
+      "path": "../../client/store/tsconfig.json"
+    },
+    {
+      "path": "../../client/ui-chat/tsconfig.client.json"
+    },
+    {
+      "path": "../../client/ui-conversation/tsconfig.client.json"
+    },
+    {
+      "path": "../../client/ui-primitives/tsconfig.json"
+    },
+    {
+      "path": "../../client/ui-renderer/tsconfig.json"
+    },
+    {
+      "path": "../../client/ui-session/tsconfig.json"
+    },
+    {
+      "path": "../../client/ui-sidebar/tsconfig.json"
+    },
+    {
+      "path": "../../client/ui-sidebar-right/tsconfig.json"
+    },
+    {
+      "path": "../../client/ui-slots/tsconfig.json"
+    },
+    {
+      "path": "../../client/ui-workspace/tsconfig.json"
+    },
+    {
+      "path": "../../core/session"
+    },
+    {
+      "path": "../../typert/protocol"
+    },
+    {
+      "path": "../../util/values"
+    },
+    {
+      "path": "../liveshare-protocol/tsconfig.client.json"
+    }
+  ]
+}
diff --git a/packages/experimental/liveshare/tsconfig.host.json b/packages/experimental/liveshare/tsconfig.host.json
new file mode 100644
index 0000000000..193a22ba67
--- /dev/null
+++ b/packages/experimental/liveshare/tsconfig.host.json
@@ -0,0 +1,37 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types",
+    "tsBuildInfoFile": "lib/tsconfig.host.tsbuildinfo"
+  },
+  "include": ["src"],
+  "exclude": ["src/client"],
+  "references": [
+    { "path": "../../../vendor/cordis" },
+    { "path": "../../../vendor/loader" },
+    { "path": "../../util/brand" },
+    { "path": "../../util/values" },
+    { "path": "../../core/session" },
+    { "path": "../../core/agent" },
+    { "path": "../../core/agent-default-model" },
+    { "path": "../../core/scope" },
+    { "path": "../../core/tools" },
+    { "path": "../../fs/fs" },
+    { "path": "../../llm/llm" },
+    { "path": "../../sandbox/sandbox" },
+    { "path": "../../sandbox/sandbox-policy" },
+    { "path": "../../util/http-proxy" },
+    { "path": "../../util/atomic-write" },
+    { "path": "../../api/gateway/tsconfig.host.json" },
+    { "path": "../../api/remote-access/tsconfig.host.json" },
+    { "path": "../../client/connection/tsconfig.host.json" },
+    { "path": "../../typert/protocol" },
+    { "path": "../../workspace/workspace" },
+    { "path": "../../api/session-controller/tsconfig.host.json" },
+    { "path": "../../session/session-projection" },
+    { "path": "../liveshare-protocol/tsconfig.host.json" },
+    { "path": "../../client/modules" },
+    { "path": "../../host/frontend-static" }
+  ]
+}
diff --git a/packages/experimental/liveshare/tsconfig.json b/packages/experimental/liveshare/tsconfig.json
new file mode 100644
index 0000000000..2a0b0e33f7
--- /dev/null
+++ b/packages/experimental/liveshare/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.host.json" },
+    { "path": "./tsconfig.client.json" }
+  ]
+}
diff --git a/packages/experimental/liveshare/tsdown.config.ts b/packages/experimental/liveshare/tsdown.config.ts
new file mode 100644
index 0000000000..fe35cc19b8
--- /dev/null
+++ b/packages/experimental/liveshare/tsdown.config.ts
@@ -0,0 +1,11 @@
+import { clientBundle } from '../../client/tsdown.client.ts'
+
+export default clientBundle(
+  import.meta.dirname,
+  [
+    'lib/types/index.js',
+    'lib/types/viewer-declarations.js',
+    'lib/types/owner-gateway/cli.js',
+  ],
+  { hostPhase: true },
+)
diff --git a/packages/experimental/personalized-recommendations/package.json b/packages/experimental/personalized-recommendations/package.json
index 5136e37ca1..b94017f26f 100644
--- a/packages/experimental/personalized-recommendations/package.json
+++ b/packages/experimental/personalized-recommendations/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-personalized-recommendations",
   "description": "Personalized pages and built-in plugin recommendations offered as cards below answers",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/plugin-market-bundle/package.json b/packages/experimental/plugin-market-bundle/package.json
index d8241cd8f1..2e2f2d5df3 100644
--- a/packages/experimental/plugin-market-bundle/package.json
+++ b/packages/experimental/plugin-market-bundle/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-plugin-market-bundle",
   "description": "Experimental custom plugin indexes: a Discover tab that browses and installs bundles from plugin indexes",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/plugin-recommendations/package.json b/packages/experimental/plugin-recommendations/package.json
index 3d448451b5..eb5fe0556c 100644
--- a/packages/experimental/plugin-recommendations/package.json
+++ b/packages/experimental/plugin-recommendations/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-plugin-recommendations",
   "description": "Official plugin suggestions with explicit user activation and persistent conversation decisions",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/ptc-runtime-python/package.json b/packages/experimental/ptc-runtime-python/package.json
index 9744c38d4a..26ef315e8e 100644
--- a/packages/experimental/ptc-runtime-python/package.json
+++ b/packages/experimental/ptc-runtime-python/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-ptc-runtime-python",
   "description": "CPython subprocess implementation of the DeepSeek Harness PTC execution seam",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
diff --git a/packages/experimental/ralph-bundle/package.json b/packages/experimental/ralph-bundle/package.json
index e28b718f5d..74a004d01a 100644
--- a/packages/experimental/ralph-bundle/package.json
+++ b/packages/experimental/ralph-bundle/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-ralph-bundle",
   "description": "Run explicitly requested repeated work with fresh agents.",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/session-inspector/package.json b/packages/experimental/session-inspector/package.json
index 01ffc28d6d..ac6696e364 100644
--- a/packages/experimental/session-inspector/package.json
+++ b/packages/experimental/session-inspector/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-session-inspector",
   "description": "Experimental virtualized Session log and live Chat group/node inspectors",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/session-search/package.json b/packages/experimental/session-search/package.json
index e7637cf962..78d3a54b6b 100644
--- a/packages/experimental/session-search/package.json
+++ b/packages/experimental/session-search/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-session-search",
   "description": "Give agents tools to search and read earlier sessions from the current workspace.",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/session-title-all-prompts-llm/package.json b/packages/experimental/session-title-all-prompts-llm/package.json
index d43801caf8..b75bbd34c0 100644
--- a/packages/experimental/session-title-all-prompts-llm/package.json
+++ b/packages/experimental/session-title-all-prompts-llm/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-title-all-prompts-llm",
   "description": "All-user-messages LLM provider plugin for DeepSeek Harness session titles",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/session-titles-bundle/package.json b/packages/experimental/session-titles-bundle/package.json
index 66205b8635..b6030966b7 100644
--- a/packages/experimental/session-titles-bundle/package.json
+++ b/packages/experimental/session-titles-bundle/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-session-titles-bundle",
   "description": "Refresh session titles as new human prompts arrive.",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/skill-badge/package.json b/packages/experimental/skill-badge/package.json
index 265f4de0ec..508f3781d1 100644
--- a/packages/experimental/skill-badge/package.json
+++ b/packages/experimental/skill-badge/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-skill-badge",
   "description": "Bundled dsh badge skill provider for DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/speech-to-text-sensevoice/package.json b/packages/experimental/speech-to-text-sensevoice/package.json
index 960082312a..f45735f648 100644
--- a/packages/experimental/speech-to-text-sensevoice/package.json
+++ b/packages/experimental/speech-to-text-sensevoice/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-speech-to-text-sensevoice",
   "description": "Local SenseVoice ONNX transcription with a managed sherpa-onnx process",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/speech-to-text/package.json b/packages/experimental/speech-to-text/package.json
index d3404da13c..4d0eb8ab19 100644
--- a/packages/experimental/speech-to-text/package.json
+++ b/packages/experimental/speech-to-text/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-speech-to-text",
   "description": "Experimental speech recognition with independently selectable providers",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/subagent-oar/package.json b/packages/experimental/subagent-oar/package.json
index a5e2cd31d0..fc5b6894ec 100644
--- a/packages/experimental/subagent-oar/package.json
+++ b/packages/experimental/subagent-oar/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-subagent-oar",
   "description": "Experimental one-shot subagents through OAR runtimes",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/terminal-bundle/package.json b/packages/experimental/terminal-bundle/package.json
index c9d988ee02..ed4e28945e 100644
--- a/packages/experimental/terminal-bundle/package.json
+++ b/packages/experimental/terminal-bundle/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-terminal-bundle",
   "description": "Keep shell processes alive across tool calls.",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/tool-agent-team/package.json b/packages/experimental/tool-agent-team/package.json
index ea4b2744c6..cb8d35327f 100644
--- a/packages/experimental/tool-agent-team/package.json
+++ b/packages/experimental/tool-agent-team/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-tool-agent-team",
   "description": "Scoped model-facing Agent Teams tools over ctx.agentTeams",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/tool-ralph/package.json b/packages/experimental/tool-ralph/package.json
index b043dbff4c..2451f095f6 100644
--- a/packages/experimental/tool-ralph/package.json
+++ b/packages/experimental/tool-ralph/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-ralph",
   "description": "Model-facing fresh-agent Ralph loop over the workflow and subagent seams",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/tool-session-query/package.json b/packages/experimental/tool-session-query/package.json
index 283fbabab1..0bd82c360d 100644
--- a/packages/experimental/tool-session-query/package.json
+++ b/packages/experimental/tool-session-query/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-session-query",
   "description": "Workspace-authorized model-facing session history search, trace, and event read tools",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/tool-subagent-oar/package.json b/packages/experimental/tool-subagent-oar/package.json
index f5c187a742..de6d30efda 100644
--- a/packages/experimental/tool-subagent-oar/package.json
+++ b/packages/experimental/tool-subagent-oar/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-tool-subagent-oar",
   "description": "Delegate standalone tasks to configured external subagent providers",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/tool-terminal/package.json b/packages/experimental/tool-terminal/package.json
index 7ec2bac846..1b904cb61c 100644
--- a/packages/experimental/tool-terminal/package.json
+++ b/packages/experimental/tool-terminal/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-terminal",
   "description": "Six model-facing persistent PTY tools with owner isolation and generic background-job integration",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/tool-worktree/package.json b/packages/experimental/tool-worktree/package.json
index 87881ea7b0..66ac502cee 100644
--- a/packages/experimental/tool-worktree/package.json
+++ b/packages/experimental/tool-worktree/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-tool-worktree",
   "description": "Model tool that creates and enters a new Git worktree",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/translator/package.json b/packages/experimental/translator/package.json
index 1af306f02e..68d2dcd60e 100644
--- a/packages/experimental/translator/package.json
+++ b/packages/experimental/translator/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-translator",
   "description": "Machine translation with reusable Session results",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/translator/src/deepseek.ts b/packages/experimental/translator/src/deepseek.ts
index afdba4de20..600810e017 100644
--- a/packages/experimental/translator/src/deepseek.ts
+++ b/packages/experimental/translator/src/deepseek.ts
@@ -72,8 +72,8 @@ function nativeOwner(ctx: Context, provider: PaidTranslationProvider): NativeOwn
   const entry = [...loader.entries()].find(row => row.options.id === directory.settingsNs && row.options.name === OWNER_PACKAGES[provider])
   if (entry?.fiber?.state !== FiberState.ACTIVE) return undefined
   return provider === 'deepseek-account'
-    ? { llm, fiber: entry.fiber, provider, config: entry.fiber.effectiveConfig as AccountNativeConfig }
-    : { llm, fiber: entry.fiber, provider, config: entry.fiber.effectiveConfig as OfficialNativeConfig }
+    ? { llm, fiber: entry.fiber.ctx.fiber, provider, config: entry.fiber.effectiveConfig as AccountNativeConfig }
+    : { llm, fiber: entry.fiber.ctx.fiber, provider, config: entry.fiber.effectiveConfig as OfficialNativeConfig }
 }
 
 function unchanged(ctx: Context, provider: PaidTranslationProvider, previous: EligibleOwner): NativeOwner | undefined {
diff --git a/packages/experimental/translator/tests/deepseek.spec.ts b/packages/experimental/translator/tests/deepseek.spec.ts
index 7f45aecd9f..8d40b492c0 100644
--- a/packages/experimental/translator/tests/deepseek.spec.ts
+++ b/packages/experimental/translator/tests/deepseek.spec.ts
@@ -261,6 +261,7 @@ describe('native Flash translation', () => {
 
   it.each(['withdrawn', 'catalog', 'credential'])('rejects a native route %s during async preparation before audit or dispatch', async (change) => {
     const b = await paidFixture(cleanups), entered = Promise.withResolvers<undefined>(), release = Promise.withResolvers<undefined>()
+    cleanups.push(async () => { release.resolve(undefined) })
     const original = b.ctx.llm.prepareCall.bind(b.ctx.llm)
     vi.spyOn(b.ctx.llm, 'prepareCall').mockImplementationOnce(async (config, signal) => {
       const call = await original(config, signal)
@@ -270,8 +271,9 @@ describe('native Flash translation', () => {
     const rejected = expect(pending).rejects.toMatchObject({ code: 'TRANSLATION_UNAVAILABLE' })
     await entered.promise
     const owner = [...b.ctx.loader.entries()].find(entry => entry.options.id === 'official-custom-id')!
+    let withdrawal: Promise<void> | undefined
     if (change === 'withdrawn') {
-      await owner.fiber!.dispose()
+      withdrawal = owner.fiber!.dispose()
       await rejected
     } else if (change === 'catalog') {
       const config = owner.fiber!.effectiveConfig as ReturnType<typeof OfficialConfig>
@@ -279,6 +281,7 @@ describe('native Flash translation', () => {
     } else b.setConfigured(false)
     release.resolve(undefined)
     await rejected
+    await withdrawal
     expect(b.requests).toEqual([])
     expect(b.session?.snapshotEvents()).toEqual([])
   })
diff --git a/packages/experimental/voice-input-bundle/package.json b/packages/experimental/voice-input-bundle/package.json
index 263e044873..482e6820dc 100644
--- a/packages/experimental/voice-input-bundle/package.json
+++ b/packages/experimental/voice-input-bundle/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-voice-input-bundle",
   "description": "Experimental voice input with local SenseVoice; downloads its runtime on first use",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "icon": "./icon.svg",
   "publishConfig": {
     "access": "public"
diff --git a/packages/experimental/webhook-github/package.json b/packages/experimental/webhook-github/package.json
index fabb6e54f3..ad977368f7 100644
--- a/packages/experimental/webhook-github/package.json
+++ b/packages/experimental/webhook-github/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-webhook-github",
   "description": "Signed GitHub HTTP webhook adapter for the DeepSeek Harness webhook runtime",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/webhook/package.json b/packages/experimental/webhook/package.json
index a11081cac9..48fc91e901 100644
--- a/packages/experimental/webhook/package.json
+++ b/packages/experimental/webhook/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-webhook",
   "description": "Fire-and-forget webhook rule runtime that creates Workspace-backed DeepSeek Harness Sessions",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/webworker-packer/package.json b/packages/experimental/webworker-packer/package.json
index 9c5e037758..a9b39b76d0 100644
--- a/packages/experimental/webworker-packer/package.json
+++ b/packages/experimental/webworker-packer/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-webworker-packer",
   "description": "Build-time packer for the browser runtime's base VFS image and ordered data-overlay archives",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/webworker-runtime/package.json b/packages/experimental/webworker-runtime/package.json
index 60f58cb015..2e2b34f3e3 100644
--- a/packages/experimental/webworker-runtime/package.json
+++ b/packages/experimental/webworker-runtime/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-webworker-runtime",
   "description": "Browser-only harness runtime: in-memory VFS, module transform and loader, postMessage tunnel, and the dedicated Web Worker assembly, with the Node-compatibility layer that lets the host tree run unchanged",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/experimental/worktree/package.json b/packages/experimental/worktree/package.json
index fc96ba1cf6..8824c4f429 100644
--- a/packages/experimental/worktree/package.json
+++ b/packages/experimental/worktree/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-experimental-worktree",
   "description": "Creates a named Git worktree and changes the calling Session working directory",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/extensions/cordis-client-runner/package.json b/packages/extensions/cordis-client-runner/package.json
index 393b3e16cc..cc08175562 100644
--- a/packages/extensions/cordis-client-runner/package.json
+++ b/packages/extensions/cordis-client-runner/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-cordis-client-runner",
   "description": "Browser half of dynamic dual-half plugin packages: event subscription, closure evaluation, guard facade, and loader entries",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/extensions/cordis-client-runner/src/client/slot-catalog.ts b/packages/extensions/cordis-client-runner/src/client/slot-catalog.ts
index fefeb58088..81c6de7149 100644
--- a/packages/extensions/cordis-client-runner/src/client/slot-catalog.ts
+++ b/packages/extensions/cordis-client-runner/src/client/slot-catalog.ts
@@ -79,6 +79,95 @@ export const CLIENT_NOTES: readonly string[] = [
 // verbatim; that sameness IS the contract a registrant reads, so clone
 // detection is told to skip the data rather than the file.
 export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
+  {
+    key: 'contextMenu.content',
+    kind: 'keyed',
+    scope: 'root',
+    summary: 'Optional React rows for existing extension positions; data contributions need no renderer.',
+    doc: 'Optional React rows for existing extension positions; data contributions need no renderer.',
+    registerOptions: [
+      {
+        name: 'key',
+        requirement: 'required',
+        type: 'string',
+        doc: 'Your cell key: the entry renders where the owner dispatches this exact key. Registering an already-occupied key replaces that occupant.',
+      },
+    ],
+    ownerProps: [
+      '/** Captured target; changing selection never changes an open menu\'s target. */\nexport type ContextMenuTarget = {\n  [K in keyof ContextMenuTargetMap]: { readonly kind: K; readonly value: ContextMenuTargetMap[K] }\n}[keyof ContextMenuTargetMap]',
+    ],
+    ownerPropsReferences: [
+      'ContextMenuTargetMap',
+    ],
+    standardProps: [
+      'useRemoteAccess: (action: RemoteEndpoint) => boolean',
+      'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
+      'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
+      'usePanelInfo: UsePanelInfo',
+      'useSessions: UseSessions',
+      'useSessionStatus: UseSessionStatus',
+      'useSessionRetainInfo: UseSessionRetainInfo',
+      'useSessionAccess: (sessionId: SessionId, action: RemoteEndpoint) => boolean',
+      'useWorkspaceAccess: (workspaceId: WorkspaceId, action: RemoteEndpoint) => boolean',
+    ],
+    keyDomain: 'open: any string the owner dispatches (no compile-time key set), already taken: session, tab',
+    hookContext: '',
+    slotInject: '',
+    declaredBy: 'an entry in \'shell.overlay\' (client-ui-context-menu), so it exists while that entry is mounted',
+    occupants: [
+      'client-ui-sidebar-right TabMenuContent key \'tab\'',
+      'client-ui-workspace SessionMenu key \'session\'',
+    ],
+    replaceRisk: 'shadows-shipped-ui',
+    example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'contextMenu.content\', () => ctx.slots.register(\n      { name: \'contextMenu.content\', key: \'<one key the owner dispatches>\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
+    source: 'packages/client/ui-context-menu/src/client/index.ts:34',
+  },
+  {
+    key: 'contextMenu.icon',
+    kind: 'keyed',
+    scope: 'root',
+    summary: 'Business-owned glyph or image selected by the action\'s icon key.',
+    doc: 'Business-owned glyph or image selected by the action\'s icon key.',
+    registerOptions: [
+      {
+        name: 'key',
+        requirement: 'required',
+        type: 'string',
+        doc: 'Your cell key: the entry renders where the owner dispatches this exact key. Registering an already-occupied key replaces that occupant.',
+      },
+    ],
+    ownerProps: [
+      '/** Keyed icon renderer and optional image URL captured with the action. */\nexport interface ContextMenuIcon {\n  readonly key: string\n  readonly src?: string\n}',
+    ],
+    ownerPropsReferences: [],
+    standardProps: [
+      'useRemoteAccess: (action: RemoteEndpoint) => boolean',
+      'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
+      'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
+      'usePanelInfo: UsePanelInfo',
+      'useSessions: UseSessions',
+      'useSessionStatus: UseSessionStatus',
+      'useSessionRetainInfo: UseSessionRetainInfo',
+      'useSessionAccess: (sessionId: SessionId, action: RemoteEndpoint) => boolean',
+      'useWorkspaceAccess: (workspaceId: WorkspaceId, action: RemoteEndpoint) => boolean',
+    ],
+    keyDomain: 'open: any string the owner dispatches (no compile-time key set), already taken: open-in-app.application, sidebar.close',
+    hookContext: '',
+    slotInject: '',
+    declaredBy: 'an entry in \'shell.overlay\' (client-ui-context-menu), so it exists while that entry is mounted',
+    occupants: [
+      'client-ui-file-actions Icon',
+      'client-ui-open-in-app Icon',
+      'client-ui-open-in-app ContextMenuApplicationIcon key \'open-in-app.application\'',
+      'client-ui-sidebar-right IconCloseOutlineRegular key \'sidebar.close\'',
+      'client-ui-workspace Icon',
+    ],
+    replaceRisk: 'shadows-shipped-ui',
+    example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'contextMenu.icon\', () => ctx.slots.register(\n      { name: \'contextMenu.icon\', key: \'<one key the owner dispatches>\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
+    source: 'packages/client/ui-context-menu/src/client/index.ts:32',
+  },
   {
     key: 'conversation.approval.detail',
     kind: 'single',
@@ -93,6 +182,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -156,6 +246,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -182,7 +273,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.chat.assistant-actions\', () => ctx.slots.register(\n      { name: \'conversation.chat.assistant-actions\', id: \'my-entry\', order: 100, label: \'My entry\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-chat/src/client/contract/slots.ts:457',
+    source: 'packages/client/ui-chat/src/client/contract/slots.ts:487',
   },
   {
     key: 'conversation.chat.commandview',
@@ -209,6 +300,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -233,7 +325,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     occupants: [],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.chat.commandview\', () => ctx.slots.register(\n      { name: \'conversation.chat.commandview\', key: \'<one key the owner dispatches>\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-chat/src/client/contract/slots.ts:439',
+    source: 'packages/client/ui-chat/src/client/contract/slots.ts:469',
   },
   {
     key: 'conversation.chat.flow',
@@ -243,7 +335,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     doc: 'Ordered Chat rows and local echoes with viewport-bound visibility hooks.',
     registerOptions: [],
     ownerProps: [
-      '/** Ordered rows and reconciled local echoes rendered inside one Chat viewport. */\nexport interface ChatFlowOwnerProps extends Pick<ChatNodeOwnerProps,\n  \'cwd\' | \'openFile\' | \'inspectCall\' | \'forkAt\' | \'loadImage\' | \'fileMentions\'> {\n  readonly entries: readonly RenderEntry[]\n  readonly pendingInputs: readonly (PendingSubmission | InboxState[\'next-step\'][number])[]\n  readonly lastInputTurn: number | undefined\n  readonly deferCollapse: boolean\n}',
+      '/** Ordered rows and reconciled local echoes rendered inside one Chat viewport. */\nexport interface ChatFlowOwnerProps extends Pick<ChatNodeOwnerProps,\n  \'cwd\' | \'openFile\' | \'inspectCall\' | \'forkAt\' | \'loadImage\'> {\n  readonly entries: readonly RenderEntry[]\n  readonly pendingInputs: readonly (PendingSubmission | InboxState[\'next-step\'][number])[]\n  readonly lastInputTurn: number | undefined\n  readonly deferCollapse: boolean\n}',
     ],
     ownerPropsReferences: [
       'ChatNodeOwnerProps',
@@ -253,6 +345,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -279,7 +372,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.chat.flow\', () => ctx.slots.register(\n      { name: \'conversation.chat.flow\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-chat/src/client/contract/slots.ts:406',
+    source: 'packages/client/ui-chat/src/client/contract/slots.ts:425',
   },
   {
     key: 'conversation.chat.message.images',
@@ -299,6 +392,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -325,7 +419,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.chat.message.images\', () => ctx.slots.register(\n      { name: \'conversation.chat.message.images\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-chat/src/client/contract/slots.ts:431',
+    source: 'packages/client/ui-chat/src/client/contract/slots.ts:461',
   },
   {
     key: 'conversation.chat.node',
@@ -342,18 +436,17 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
       },
     ],
     ownerProps: [
-      '/** Stable owner currency delivered to a keyed Chat renderer. */\nexport interface ChatNodeOwnerProps {\n  /** Renderer-owned Node portion selected by the grouping Definition. */\n  groupPart?: string\n  cwd?: string | undefined\n  openFile: (path: string, options?: OpenFileOptions) => void\n  inspectCall: ((callId: ToolCallId) => void) | undefined\n  forkAt: (seq: number) => void\n  /** Session-authorized image loader supplied by the Chat view. */\n  loadImage: MessageImageLoader\n  fileMentions: (owner: TurnTailOwnerProps) => MarkdownFileMentions | undefined\n  /** Turn-process state when this Node belongs to a projected Turn. */\n  turnProcess?: TurnProcessOwnerProps | undefined\n}',
+      '/** Stable owner currency delivered to a keyed Chat renderer. */\nexport interface ChatNodeOwnerProps {\n  /** Renderer-owned Node portion selected by the grouping Definition. */\n  groupPart?: string\n  cwd?: string | undefined\n  openFile: (path: string, options?: OpenFileOptions) => void\n  inspectCall: ((callId: ToolCallId) => void) | undefined\n  forkAt: (seq: number) => void\n  /** Session-authorized image loader supplied by the Chat view. */\n  loadImage: MessageImageLoader\n  /** Turn-process state when this Node belongs to a projected Turn. */\n  turnProcess?: TurnProcessOwnerProps | undefined\n}',
     ],
     ownerPropsReferences: [
-      'MarkdownFileMentions',
       'MessageImageLoader',
       'OpenFileOptions',
       'TurnProcessOwnerProps',
-      'TurnTailOwnerProps',
     ],
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -398,7 +491,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.chat.node\', () => ctx.slots.register(\n      { name: \'conversation.chat.node\', key: \'<one key the owner dispatches>\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-chat/src/client/contract/slots.ts:418',
+    source: 'packages/client/ui-chat/src/client/contract/slots.ts:437',
   },
   {
     key: 'conversation.chat.reasoning.body',
@@ -414,6 +507,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -441,7 +535,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.chat.reasoning.body\', () => ctx.slots.register(\n      { name: \'conversation.chat.reasoning.body\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-chat/src/client/contract/slots.ts:445',
+    source: 'packages/client/ui-chat/src/client/contract/slots.ts:475',
   },
   {
     key: 'conversation.chat.text-interaction',
@@ -466,6 +560,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -492,7 +587,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.chat.text-interaction\', () => ctx.slots.register(\n      { name: \'conversation.chat.text-interaction\', key: \'<one key the owner dispatches>\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-chat/src/client/contract/slots.ts:403',
+    source: 'packages/client/ui-chat/src/client/contract/slots.ts:422',
   },
   {
     key: 'conversation.chat.turnTail',
@@ -529,6 +624,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -558,6 +654,56 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.chat.turnTail\', () => ctx.slots.register(\n      { name: \'conversation.chat.turnTail\', id: \'my-entry\', order: 100, label: \'My entry\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
+    source: 'packages/client/ui-chat/src/client/contract/slots.ts:481',
+  },
+  {
+    key: 'conversation.chat.user.before',
+    kind: 'chain',
+    scope: 'session',
+    summary: 'Message-source decoration owned and rendered by the user Node entry.',
+    doc: 'Message-source decoration owned and rendered by the user Node entry.\nSelectors elect one component from the durable source and row kind.\nNo match renders no visible content; steering and pending rows do not\nrender this slot.',
+    registerOptions: [
+      {
+        name: 'select',
+        requirement: 'required',
+        type: '(owner) => unknown | null',
+        doc: 'Pure routing selector. Entries are tried in ascending order; the first non-null result wins and arrives as the component\'s `matched` prop. All-null falls through to the owner\'s fallback.',
+      },
+    ],
+    ownerProps: [
+      '/**\n * Owner currency of the message-source decoration above one user message bubble.\n *\n * Entry selectors receive the durable message `source` and row kind. A\n * non-null selection elects the component and reaches it as `matched`.\n * Entries own their markup and copy; Chat does not interpret the source.\n */\nexport interface UserBeforeOwnerProps {\n  /** Durable message source; Chat does not interpret it. */\n  readonly source: unknown\n  /** Chat row kind that owns the decoration site. */\n  readonly kind: \'user\' | \'steering\'\n}',
+    ],
+    ownerPropsReferences: [],
+    standardProps: [
+      'useRemoteAccess: (action: RemoteEndpoint) => boolean',
+      'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
+      'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
+      'usePanelInfo: UsePanelInfo',
+      'useSessions: UseSessions',
+      'useSessionStatus: UseSessionStatus',
+      'useSessionRetainInfo: UseSessionRetainInfo',
+      'useSessionAccess: (sessionId: SessionId, action: RemoteEndpoint) => boolean',
+      'useWorkspaceAccess: (workspaceId: WorkspaceId, action: RemoteEndpoint) => boolean',
+      'useChat: UseChat',
+      'useConversation: UseConversation',
+      'useInput: SnapshotSelectorHook<InputState>',
+      'inputActions: InputActions',
+      'useSession: SessionSnapshotSelector',
+      'sessionId: SessionId',
+      'useProjection: UseProjection',
+      'useAccess: (action: RemoteEndpoint) => boolean',
+      'useTrajectory: UseTrajectory',
+    ],
+    keyDomain: '',
+    hookContext: '',
+    slotInject: '',
+    declaredBy: 'an entry in \'conversation.chat.node\' (client-ui-chat), so it exists while that entry is mounted',
+    occupants: [
+      'experimental-liveshare SharedSessionOrigin',
+    ],
+    replaceRisk: 'none',
+    example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.chat.user.before\', () => ctx.slots.register(\n      { name: \'conversation.chat.user.before\', select: owner => null },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
     source: 'packages/client/ui-chat/src/client/contract/slots.ts:451',
   },
   {
@@ -578,6 +724,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -604,7 +751,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.chat.user.images\', () => ctx.slots.register(\n      { name: \'conversation.chat.user.images\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-chat/src/client/contract/slots.ts:433',
+    source: 'packages/client/ui-chat/src/client/contract/slots.ts:463',
   },
   {
     key: 'conversation.composer',
@@ -631,6 +778,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -678,6 +826,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -735,6 +884,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -776,6 +926,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -816,6 +967,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -847,6 +999,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -887,6 +1040,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -935,6 +1089,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -979,6 +1134,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1012,6 +1168,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1030,7 +1187,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.hero.workspace.directoryFlow\', () => ctx.slots.register(\n      { name: \'conversation.hero.workspace.directoryFlow\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:125',
+    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:137',
   },
   {
     key: 'conversation.input.activity',
@@ -1048,6 +1205,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1094,6 +1252,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1156,6 +1315,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1219,6 +1379,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1259,6 +1420,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1282,6 +1444,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     declaredBy: 'an entry in \'conversation.composer.bar\' (client-ui-conversation), so it exists while that entry is mounted',
     occupants: [
       'client-ui-model-selection ModelSelect',
+      'experimental-liveshare ViewerModelSeat',
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.input.model\', () => ctx.slots.register(\n      { name: \'conversation.input.model\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
@@ -1304,6 +1467,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1361,6 +1525,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1405,6 +1570,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1428,6 +1594,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     declaredBy: 'an entry in \'conversation.composer.bar\' (client-ui-conversation), so it exists while that entry is mounted',
     occupants: [
       'client-ui-permission-presets PermissionSelect',
+      'experimental-liveshare ViewerPermissionSeat',
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'conversation.input.permission\', () => ctx.slots.register(\n      { name: \'conversation.input.permission\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
@@ -1447,6 +1614,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1506,6 +1674,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1565,6 +1734,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1605,6 +1775,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1645,6 +1816,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1706,6 +1878,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1751,6 +1924,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1795,6 +1969,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1856,6 +2031,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1881,6 +2057,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
       'client-ui-open-in-app SessionOpenInAppAction id \'open-in-app\'',
       'client-ui-schedule ScheduleCatalogAction id \'schedule-catalog\'',
       'experimental-client-ui-forge HeaderButton id \'forge-panel\'',
+      'experimental-liveshare LiveshareShareAction id \'liveshare-share\'',
       'session-log-export SessionLogDownloadHeaderAction id \'session-log-download\'',
     ],
     replaceRisk: 'none',
@@ -1922,6 +2099,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -1959,6 +2137,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2008,6 +2187,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2078,6 +2258,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2144,6 +2325,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2207,6 +2389,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2254,6 +2437,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2273,7 +2457,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'main\', () => ctx.slots.register(\n      { name: \'main\', key: \'<one key the owner dispatches>\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-layout/src/client/index.ts:73',
+    source: 'packages/client/ui-layout/src/client/index.ts:75',
   },
   {
     key: 'main.conversation',
@@ -2287,6 +2471,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2346,6 +2531,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2386,6 +2572,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2429,6 +2616,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2485,6 +2673,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2537,6 +2726,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2589,6 +2779,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2641,6 +2832,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2686,6 +2878,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2738,6 +2931,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2771,6 +2965,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2788,7 +2983,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'rightbar\', () => ctx.slots.register(\n      { name: \'rightbar\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-layout/src/client/index.ts:87',
+    source: 'packages/client/ui-layout/src/client/index.ts:89',
   },
   {
     key: 'rightbar.session',
@@ -2807,6 +3002,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2849,6 +3045,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2901,6 +3098,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2934,6 +3132,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -2986,6 +3185,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3030,6 +3230,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3063,6 +3264,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3115,6 +3317,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3155,6 +3358,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3184,6 +3388,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3236,6 +3441,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3289,6 +3495,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3341,6 +3548,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3378,6 +3586,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3409,6 +3618,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3426,20 +3636,21 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'shell.bottom\', () => ctx.slots.register(\n      { name: \'shell.bottom\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-layout/src/client/index.ts:94',
+    source: 'packages/client/ui-layout/src/client/index.ts:96',
   },
   {
     key: 'shell.leading',
     kind: 'single',
     scope: 'root',
     summary: 'Window-chrome seat at the frame\'s top-left, over every main panel.',
-    doc: 'Window-chrome seat at the frame\'s top-left, over every main panel.\nMounted only while the sidebar column is fully hidden (macOS desktop\ncollapse; other platforms keep the rail), so the occupant can assume the\nframe edge is the window edge and the macOS traffic lights sit before it.\nOCCUPIED by ui-sidebar\'s reopen/New Session controls.\n\nWhile the seat is mounted the frame publishes\n`--dsh-frame-leading-clearance` (the inline inset the seat\'s band\noccupies, measured from the frame\'s left edge); a main panel whose\ncontent reaches the top-left corner pads by it so nothing lands under\nthe lights or the controls.',
+    doc: 'Window-chrome seat at the frame\'s top-left, over every main panel.\nMounted for narrow drawers and collapsed macOS desktop sidebars. macOS\ntraffic lights sit before it outside native fullscreen; browser controls\nstart at the frame edge.\nOCCUPIED by ui-sidebar\'s reopen/New Session controls.\n\nWhile the seat is mounted the frame publishes\n`--dsh-frame-leading-clearance` (the inline inset the seat\'s band\noccupies, measured from the frame\'s left edge); a main panel whose\ncontent reaches the top-left corner pads by it so nothing lands under\nthe lights or the controls.',
     registerOptions: [],
     ownerProps: [],
     ownerPropsReferences: [],
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3457,7 +3668,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'shell.leading\', () => ctx.slots.register(\n      { name: \'shell.leading\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-layout/src/client/index.ts:119',
+    source: 'packages/client/ui-layout/src/client/index.ts:121',
   },
   {
     key: 'shell.overlay',
@@ -3490,6 +3701,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3504,6 +3716,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     declaredBy: 'an entry in \'root\' (client-ui-layout), so it exists while that entry is mounted',
     occupants: [
       'client-ui-chat QuotaNoticeHost id \'chat.quota-notice\'',
+      'client-ui-context-menu MenuOverlay id \'context-menu\'',
       'client-ui-file-drag FileDragFeedback id \'file-drag.feedback\'',
       'client-ui-open-in-app OpenInAppToast id \'open-in-app.toast\'',
       'client-ui-plugin-manager PluginRefreshToast id \'plugin-manager.refresh-toast\'',
@@ -3522,7 +3735,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'shell.overlay\', () => ctx.slots.register(\n      { name: \'shell.overlay\', id: \'my-entry\', order: 100, label: \'My entry\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-layout/src/client/index.ts:105',
+    source: 'packages/client/ui-layout/src/client/index.ts:107',
   },
   {
     key: 'shell.quota-notice',
@@ -3547,6 +3760,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3564,22 +3778,23 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'shell.quota-notice\', () => ctx.slots.register(\n      { name: \'shell.quota-notice\', select: owner => null },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-chat/src/client/contract/slots.ts:465',
+    source: 'packages/client/ui-chat/src/client/contract/slots.ts:495',
   },
   {
     key: 'sidebar',
     kind: 'single',
     scope: 'root',
     summary: 'The whole left column.',
-    doc: 'The whole left column. OCCUPIED by ui-sidebar\'s SidebarRoot, which\ndeclares the workspace and settings seats inside it — registering here\nreplaces the navigation column outright rather than adding to it, and\nthe seats it declares disappear with it. To add something to the\nsidebar, register into one of those inner seats instead.\n\nThe occupant receives the frame\'s live column state (collapsed, width)\nand is expected to render the compact control rail while collapsed.',
+    doc: 'The whole left column. OCCUPIED by ui-sidebar\'s SidebarRoot, which\ndeclares the workspace and settings seats inside it — registering here\nreplaces the navigation column outright rather than adding to it, and\nthe seats it declares disappear with it. To add something to the\nsidebar, register into one of those inner seats instead.\n\nThe occupant receives the frame\'s collapsed state, width and drawer mode.\nDrawer content stays mounted while hidden; other browser columns retain\na compact control rail while collapsed.',
     registerOptions: [],
     ownerProps: [
-      '/** Sidebar owner share: live column state from the frame\'s concession solve. */\nexport interface SidebarOwnerProps {\n  /** True when the sidebar is closed (the column renders the compact control rail). */\n  collapsed: boolean\n  /** Rendered column width in px (SIDEBAR_COLLAPSED when collapsed). */\n  width: number\n}',
+      '/** Sidebar owner share: live column state from the frame\'s concession solve. */\nexport interface SidebarOwnerProps {\n  /** True when closed; a drawer is hidden, while other browser columns retain a rail. */\n  collapsed: boolean\n  /** Rendered sidebar width in px; a hidden drawer retains its expanded width. */\n  width: number\n  /** Present the retained sidebar content as an overlay drawer. */\n  drawer: boolean\n}',
     ],
     ownerPropsReferences: [],
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3597,7 +3812,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'sidebar\', () => ctx.slots.register(\n      { name: \'sidebar\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-layout/src/client/index.ts:68',
+    source: 'packages/client/ui-layout/src/client/index.ts:70',
   },
   {
     key: 'sidebar.brand.mark',
@@ -3613,6 +3828,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3627,6 +3843,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     declaredBy: 'an entry in \'sidebar\' (client-ui-sidebar), so it exists while that entry is mounted',
     occupants: [
       'client-ui-brand-official OfficialBrandMark',
+      'experimental-liveshare ViewerBrandMark',
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'sidebar.brand.mark\', () => ctx.slots.register(\n      { name: \'sidebar.brand.mark\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
@@ -3646,6 +3863,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3660,6 +3878,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     declaredBy: 'an entry in \'sidebar\' (client-ui-sidebar), so it exists while that entry is mounted',
     occupants: [
       'client-ui-brand-official OfficialBrandName',
+      'experimental-liveshare ViewerBrandName',
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'sidebar.brand.name\', () => ctx.slots.register(\n      { name: \'sidebar.brand.name\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
@@ -3677,6 +3896,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3738,6 +3958,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3790,6 +4011,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3845,6 +4067,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3883,6 +4106,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -3916,6 +4140,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
       'client-ui-subagent SidebarChatTab',
       'experimental-client-ui-forge ForgeTab',
       'experimental-client-ui-forge ChangesTab',
+      'experimental-liveshare ViewerSharePathBody',
       'experimental-session-inspector SessionInspectorView',
     ],
     replaceRisk: 'none',
@@ -3941,6 +4166,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4000,6 +4226,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4058,6 +4285,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4117,6 +4345,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4168,6 +4397,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4227,6 +4457,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4286,6 +4517,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4312,7 +4544,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'sidebar.right.tab.files.actions\', () => ctx.slots.register(\n      { name: \'sidebar.right.tab.files.actions\', id: \'my-entry\', order: 100, label: \'My entry\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-sidebar-files/src/client/index.ts:34',
+    source: 'packages/client/ui-sidebar-files/src/client/index.ts:35',
   },
   {
     key: 'sidebar.right.tab.guide',
@@ -4333,6 +4565,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4394,6 +4627,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4434,6 +4668,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4497,6 +4732,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4517,7 +4753,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     keyDomain: '',
     hookContext: '',
     slotInject: '',
-    declaredBy: 'an entry in \'rightbar.session\' (client-ui-sidebar-right), so it exists while that entry is mounted',
+    declaredBy: 'an entry in \'contextMenu.content\' (client-ui-sidebar-right), so it exists while that entry is mounted',
     occupants: [],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'sidebar.right.tab.menu.item\', () => ctx.slots.register(\n      { name: \'sidebar.right.tab.menu.item\', id: \'my-entry\', order: 100, label: \'My entry\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
@@ -4558,6 +4794,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4576,7 +4813,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'sidebar.session.row.hover\', () => ctx.slots.register(\n      { name: \'sidebar.session.row.hover\', id: \'my-entry\', order: 100, label: \'My entry\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:151',
+    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:163',
   },
   {
     key: 'sidebar.session.row.leading',
@@ -4613,6 +4850,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4627,10 +4865,11 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     declaredBy: 'an entry in \'sidebar.workspaces\' (client-ui-workspace), so it exists while that entry is mounted',
     occupants: [
       'client-ui-schedule SessionScheduleMark id \'schedule-mark\'',
+      'experimental-liveshare ViewerForkMarker id \'liveshare.fork\'',
     ],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'sidebar.session.row.leading\', () => ctx.slots.register(\n      { name: \'sidebar.session.row.leading\', id: \'my-entry\', order: 100, label: \'My entry\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:137',
+    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:149',
   },
   {
     key: 'sidebar.session.row.trailing',
@@ -4667,6 +4906,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4684,7 +4924,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'sidebar.session.row.trailing\', () => ctx.slots.register(\n      { name: \'sidebar.session.row.trailing\', id: \'my-entry\', order: 100, label: \'My entry\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:146',
+    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:158',
   },
   {
     key: 'sidebar.settings',
@@ -4700,6 +4940,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4731,6 +4972,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4758,12 +5000,13 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     doc: 'The workspace/session browsing region: section header, search, the\ngrouped/flat session list, and every workspace dialog. Declared by this\npackage\'s \'sidebar\' entry (declaring is claiming); ui-workspace\nregisters the browser.',
     registerOptions: [],
     ownerProps: [
-      '/**\n * Owner share of the browser hole — the only facts crossing the shell/region\n * boundary. Business data and actions arrive through the region\'s own inject.\n */\nexport interface SidebarSectionOwnerProps {\n  /** Shell fold-state output: wide renders the full browser, rail the icon column. */\n  wide: boolean\n  /** Rail icons request expansion; the browser rides the wide flip for focus. */\n  expandSidebar: () => void\n}',
+      '/**\n * Owner share of the browser hole — the only facts crossing the shell/region\n * boundary. Business data and actions arrive through the region\'s own inject.\n */\nexport interface SidebarSectionOwnerProps {\n  /** Shell fold-state output: wide renders the full browser, rail the icon column. */\n  wide: boolean\n  /** Ensure the sidebar is visible; safe to call while already expanded. */\n  expandSidebar: () => void\n}',
     ],
     ownerPropsReferences: [],
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4797,6 +5040,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4815,14 +5059,14 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'sidebar.workspaces.directoryFlow\', () => ctx.slots.register(\n      { name: \'sidebar.workspaces.directoryFlow\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:127',
+    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:139',
   },
   {
     key: 'sidebar.workspaces.session.menu.item',
     kind: 'list',
     scope: 'root',
-    summary: 'The rows of one Session\'s "..." menu, in ascending `order`.',
-    doc: 'The rows of one Session\'s "..." menu, in ascending `order`. ui-workspace\nregisters the shipped rows here — `pin` (100), `rename` (200), `fork`\n(300), `archive` (400), and `session-id` (450) — so a plugin row is placed\nby its own `order` among them. Use a package-namespaced `id`; reusing a shipped id at\nanother `priority` shadows that row. Each entry renders one\n`role="menuitem"` `<button>` (the shipped rows use ui-primitives\'\n`MenuItemButton`, which adds the host styling and `separatorBefore`),\ndecides its own visibility from its own state, and dismisses the menu\nthrough the injected `useMenuOpenState` hook after acting; the list\'s\nkeyboard walk and focus return read the DOM, so any such button joins\nthem. Labels come from the contributing package\'s locale namespace.',
+    summary: 'Legacy external Session menu rows, in ascending `order`, rendered together before the built-in Archive action.',
+    doc: 'Legacy external Session menu rows, in ascending `order`, rendered\ntogether before the built-in Archive action. Built-in actions use\nctx.contextMenus; Slot priority cannot replace them. Each entry renders a\n`role="menuitem"` button, owns its visibility and localized label,\nand dismisses through `useMenuOpenState`. The shared menu supplies\nkeyboard navigation and focus return.',
     registerOptions: [
       {
         name: 'id',
@@ -4852,6 +5096,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4863,17 +5108,11 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     keyDomain: '',
     hookContext: 'MenuOpenState',
     slotInject: '{ hooks: { menuOpenState: SlotHookFactory<\'sidebar.workspaces.session.menu.item\', UseMenuOpenState> shortcuts: HostObservable<readonly ShortcutCatalogEntry[]> } }',
-    declaredBy: 'an entry in \'sidebar.workspaces\' (client-ui-workspace), so it exists while that entry is mounted',
-    occupants: [
-      'client-ui-workspace PinSessionMenuItem id \'pin\'',
-      'client-ui-workspace RenameSessionMenuItem id \'rename\'',
-      'client-ui-workspace ForkSessionMenuItem id \'fork\'',
-      'client-ui-workspace ArchiveSessionMenuItem id \'archive\'',
-      'client-ui-workspace SessionIdMenuItem id \'session-id\'',
-    ],
+    declaredBy: 'an entry in \'contextMenu.content\' (client-ui-workspace), so it exists while that entry is mounted',
+    occupants: [],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    const copyLabel = \'Copy session title\' // Localize in the contributing package.\n    ctx.slots.inject(\'sidebar.workspaces.session.menu.item\', () => ctx.slots.register(\n      { name: \'sidebar.workspaces.session.menu.item\', id: \'copy-session-title\', order: 500 },\n      ({ displayTitle, useMenuOpenState }) => {\n        const [, setMenuOpen] = useMenuOpenState()\n        return React.createElement(\n          \'button\',\n          {\n            type: \'button\', role: \'menuitem\',\n            onClick: () => { setMenuOpen(false); void navigator.clipboard.writeText(displayTitle) },\n          },\n          copyLabel,\n        )\n      },\n    ))\n  },\n}',
-    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:186',
+    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:193',
   },
   {
     key: 'sidebar.workspaces.session.row.action',
@@ -4910,6 +5149,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4928,7 +5168,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'none',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'sidebar.workspaces.session.row.action\', () => ctx.slots.register(\n      { name: \'sidebar.workspaces.session.row.action\', id: \'my-entry\', order: 100, label: \'My entry\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:205',
+    source: 'packages/client/ui-workspace/src/client/contract/slots.ts:212',
   },
   {
     key: 'tool.call.images',
@@ -4947,6 +5187,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -4973,14 +5214,14 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'tool.call.images\', () => ctx.slots.register(\n      { name: \'tool.call.images\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-tool/src/client/contract/slots.ts:44',
+    source: 'packages/client/ui-tool/src/client/contract/slots.ts:41',
   },
   {
     key: 'tool.call.toolview',
     kind: 'keyed',
     scope: 'session',
-    summary: 'Keyed Tool call view dispatched by wire Tool name.',
-    doc: 'Keyed Tool call view dispatched by wire Tool name. Any name is allowed,\nincluding tools registered by your package. Register with\n`key: \'<tool name>\'`; a typo never renders.\n\nRegistering an occupied key replaces its view; unclaimed keys use the\ngeneric row. The owner supplies the call identity and running\nor settled node through explicit phase props. Every stage supplies\n`name` and a lazy `args` view; preparing arguments may be incomplete.',
+    summary: 'Keyed Tool view dispatched by wire name, including custom tools.',
+    doc: 'Keyed Tool view dispatched by wire name, including custom tools.\nRegister with `key: \'<tool name>\'`; a typo never renders.\nOccupied keys replace the view; unclaimed keys use the generic row. Owner\nphase data includes `name` and lazy `args`; preparing arguments may be incomplete.',
     registerOptions: [
       {
         name: 'key',
@@ -5005,6 +5246,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -5085,7 +5327,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     ],
     replaceRisk: 'shadows-shipped-ui',
     example: 'return {\n  inject: [\'slots\'],\n  apply(ctx) {\n    ctx.slots.inject(\'tool.call.toolview\', () => ctx.slots.register(\n      { name: \'tool.call.toolview\', key: \'<one key the owner dispatches>\' },\n      () => React.createElement(\'div\', null, \'hello\'),\n    ))\n  },\n}',
-    source: 'packages/client/ui-tool/src/client/contract/slots.ts:26',
+    source: 'packages/client/ui-tool/src/client/contract/slots.ts:23',
   },
   {
     key: 'tool.view.cordis',
@@ -5112,6 +5354,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
@@ -5161,6 +5404,7 @@ export const CLIENT_SLOT_API: readonly ClientSlotEntry[] = [
     standardProps: [
       'useRemoteAccess: (action: RemoteEndpoint) => boolean',
       'useResource: UseResource',
+      'useContextMenu: UseContextMenu',
       'useWorkspaces: SnapshotSelectorHook<WorkspaceSnapshot>',
       'usePanelInfo: UsePanelInfo',
       'useSessions: UseSessions',
diff --git a/packages/extensions/cordis-host-runner/package.json b/packages/extensions/cordis-host-runner/package.json
index 563bdb835f..2a872e52a8 100644
--- a/packages/extensions/cordis-host-runner/package.json
+++ b/packages/extensions/cordis-host-runner/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-cordis-host-runner",
   "description": "Dynamic package definition registry, host-half sandbox lifecycle, and invoke handler table for model-mounted dual-half packages",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/extensions/tool-cordis/package.json b/packages/extensions/tool-cordis/package.json
index 9a8eff1267..3a2d465fcf 100644
--- a/packages/extensions/tool-cordis/package.json
+++ b/packages/extensions/tool-cordis/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-cordis",
   "description": "Read-only runtime API inspection for Harness plugin development",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/extensions/tool-cordis/src/api-catalog.ts b/packages/extensions/tool-cordis/src/api-catalog.ts
index 97837d12cf..2a39f1487d 100644
--- a/packages/extensions/tool-cordis/src/api-catalog.ts
+++ b/packages/extensions/tool-cordis/src/api-catalog.ts
@@ -1277,6 +1277,13 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
         returns: 'undefined once the host merged it, or why it did not.',
         throws: ['when no provider serves the change request\'s forge, or with `signal.reason` when it aborts.'],
       },
+      {
+        signature: 'async fetchChecks(ref: ChangeRequestRef, signal: AbortSignal): Promise<ChangeRequestSnapshot | ForgeFailure>',
+        description: 'Read complete check details independently of periodic polling.',
+        parameters: [{ name: 'ref', description: 'change request served by a registered provider.' }, { name: 'signal', description: 'cancellation of the detail view.' }],
+        returns: 'a complete snapshot or the provider\'s failure; unsupported providers return unavailable.',
+        throws: ['on cancellation, provider disposal, or expiry of this read\'s own `fetchTimeoutMs` deadline.'],
+      },
       {
         signature: 'async diff(ref: ChangeRequestRef, signal: AbortSignal): Promise<string | ForgeFailure>',
         description: 'Read the changes of a change request as its host computes them.',
@@ -1284,6 +1291,12 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
         returns: 'one unified patch with `a/` and `b/` path prefixes, or why the host did not provide it.',
         throws: ['when no provider serves the change request\'s forge, or with `signal.reason` when it aborts.'],
       },
+      {
+        signature: 'async submitReview(ref: ChangeRequestRef, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult>',
+        description: 'Publish one comment or a completed review, then refresh the watched status.',
+        parameters: [{ name: 'ref', description: 'change request served by a registered provider.' }, { name: 'request', description: 'explicitly selected commit, comments, and review decision.' }, { name: 'signal', description: 'request cancellation.' }],
+        returns: 'a publication URL or a failure, including an unknown write outcome.',
+      },
       {
         signature: 'async fileText(ref: ChangeRequestRef, commit: string, path: string, signal: AbortSignal): Promise<string | ForgeFailure>',
         description: 'Read the text of one file at a commit of a change request\'s repository.',
@@ -1320,7 +1333,7 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
   {
     key: 'forgePanel',
     summary: 'Serves the forge panel.',
-    description: 'Serves the forge panel. Following a Session inspects the checkout of its current directory read-only in the Session\'s execution world, recognizes the code host of the upstream remote or `origin`, probes sign-in for that host, and polls the Session\'s bound change requests through `ctx.forge` until the last follower of that Session leaves. A worktree request makes the panel create a branch and checkout through an optional `ctx.worktrees` and enter it while the Session\'s first message waits in the inbox, or at the first step proposal of a message no wait took. After a failed or stopped attempt the message keeps waiting for another attempt or for the request to be withdrawn. A message also waits while the worktree the Session works in is gone, until that worktree is checked out again or left for the source checkout. Changes to a Session\'s checkout run as Agent maintenance, so a message that arrives meanwhile waits for them.',
+    description: 'Serves the forge panel. Following a Session inspects the checkout of its current directory using the Session\'s permissions and execution world, recognizes the code host of the upstream remote or `origin`, probes sign-in for that host, and polls the Session\'s bound change requests through `ctx.forge` until the last follower of that Session leaves. A worktree request makes the panel create a branch and checkout through an optional `ctx.worktrees` and enter it while the Session\'s first message waits in the inbox, or at the first step proposal of a message no wait took. After a failed or stopped attempt the message keeps waiting for another attempt or for the request to be withdrawn. A message also waits while the worktree the Session works in is gone, until that worktree is checked out again or left for the source checkout. Changes to a Session\'s checkout run as Agent maintenance, so a message that arrives meanwhile waits for them.',
     methods: [
       {
         signature: '@Remote({ mode: \'stream\' }) async *follow(session: Session, signal: AbortSignal): AsyncIterable<ForgePanelState>',
@@ -1361,10 +1374,10 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
       },
       {
         signature: '@Remote async localDiff(session: Session, scope: ForgeLocalScope, signal: AbortSignal): Promise<ForgeLocalDiff>',
-        description: 'Read the changes one scope covers in the checkout of the Session\'s current directory, with Git confined to the Session\'s read-only sandbox.',
+        description: 'Read the changes one scope covers in the checkout of the Session\'s current directory, with Git using the Session\'s sandbox policy.',
         parameters: [{ name: 'session', description: 'Session whose checkout is read.' }, { name: 'scope', description: 'which changes to read.' }, { name: 'signal', description: 'request cancellation.' }],
         returns: 'the files, the base of the `branch` scope, and the untracked files left out.',
-        throws: ['`forgePanel/not-a-checkout` outside a checkout; `forgePanel/no-fork-point` for the `branch` scope of a checkout without one; `forgePanel/diff-too-large` over `maxDiffBytes`; the Git error when Git fails.'],
+        throws: ['`forgePanel/not-a-checkout` outside a checkout; `forgePanel/no-fork-point` for the `branch` scope of a checkout without one; `forgePanel/filter-config-failed` when filter configuration cannot be read completely, before any comparison; `forgePanel/diff-too-large` over `maxDiffBytes`; the Git error when Git fails.'],
       },
       {
         signature: '@Remote async localText(session: Session, scope: ForgeLocalScope, path: string, signal: AbortSignal): Promise<string>',
@@ -1373,6 +1386,13 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
         returns: 'the text.',
         throws: ['`forgePanel/not-a-checkout` outside a checkout; `forgePanel/diff-too-large` over `maxDiffBytes`; an error for a path outside the checkout, binary content, or a failed read.'],
       },
+      {
+        signature: '@Remote async changeRequestChecks(session: Session, url: string, headSha: string, signal: AbortSignal): Promise<ChangeRequestSnapshot>',
+        description: 'Load complete checks for the change request whose list the user opened.',
+        parameters: [{ name: 'session', description: 'Session retaining the visible binding.' }, { name: 'url', description: 'binding URL.' }, { name: 'headSha', description: 'commit displayed by the card; a different head rejects the result.' }, { name: 'signal', description: 'cancellation when the list closes.' }],
+        returns: 'the complete snapshot at the displayed head.',
+        throws: ['`forgePanel/not-bound` for an invisible binding, `forgePanel/stale-head` for a moved head, or `forgePanel/checks-failed` when the provider cannot complete the read.'],
+      },
       {
         signature: '@Remote async changeRequestDiff(session: Session, url: string, signal: AbortSignal): Promise<ForgeChangeRequestDiff>',
         description: 'Read the changes of a change request of a Session as its code host computes them, at the head commit of its latest status. A patch already read at the same head commit and base branch is reused from memory, for any Session, until `maxCachedDiffBytes` evicts it.',
@@ -1387,6 +1407,12 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
         returns: 'the text.',
         throws: ['`forgePanel/not-bound` unless the URL is a visible binding of the Session that a provider serves; `forgePanel/diff-too-large` when the host or its provider refuses the file over a size limit; `forgePanel/diff-failed` when the host does not provide the file otherwise.'],
       },
+      {
+        signature: '@Remote async submitReview(session: Session, url: string, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult>',
+        description: 'Publish a line comment or completed review for a visible Session binding.',
+        parameters: [{ name: 'session', description: 'Session retaining the change request.' }, { name: 'url', description: 'visible binding URL.' }, { name: 'request', description: 'reviewed head, ranges, plain text, and explicit review decision.' }, { name: 'signal', description: 'request cancellation.' }],
+        returns: 'confirmed publication or a typed failure; unknown outcomes require reconciliation on the host.',
+      },
       {
         signature: '@Remote async markReady(session: Session, url: string, signal: AbortSignal): Promise<void>',
         description: 'Mark a draft change request of a Session ready for review; the change request is polled again once the host answers.',
@@ -1825,6 +1851,85 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
       },
     ],
   },
+  {
+    key: 'liveshareShares',
+    summary: 'Owner-only Remote surface over the share-management operations.',
+    description: 'Owner-only Remote surface over the share-management operations.\n\nThe Gateway decides each call through remote access, so a `share-viewer` Peer is refused before a method runs; the owner Peer reaches the one implementation that owns each share-management side effect. `create` takes its Session as the `sessionId` of its single request object, so the Session resource kind\'s default resolver names that Session for the call without a reader declared here.',
+    methods: [
+      {
+        signature: '@Remote(\'create\') create(request: CreateShareRequest): Promise<CreatedShare>',
+        description: 'Publish one Session and store the share.',
+        parameters: [{ name: 'request', description: 'Session, title, access, lifetime, and both switches the owner chose.' }],
+        returns: 'The created share\'s link and stored values.',
+      },
+      {
+        signature: '@Remote(\'list\') list(): Promise<OwnerShareList>',
+        description: 'Refresh titles and Liveshare server authority, then list this host\'s shares.',
+        parameters: [],
+        returns: 'Every share this host publishes.',
+      },
+      {
+        signature: '@Remote(\'stop\') stop(request: StopShareRequest): Promise<StopShareResult>',
+        description: 'Stop one share locally, revoke its forks, and delete its row on the Liveshare server when reachable.',
+        parameters: [{ name: 'request', description: 'Share to stop.' }],
+        returns: 'Whether the row on the Liveshare server still needs a retry.',
+      },
+      {
+        signature: '@Remote(\'updatePermissions\') updatePermissions(request: UpdateSharePermissionsRequest): Promise<SharePermissions>',
+        description: 'Change one share\'s tier, fork switch, or both.',
+        parameters: [{ name: 'request', description: 'Share and the switches to change.' }],
+        returns: 'The permissions the share now carries.',
+      },
+      {
+        signature: '@Remote(\'setCapabilities\') setCapabilities(request: SetShareCapabilitiesRequest): Promise<ShareCapabilities>',
+        description: 'Replace one share\'s exposed plugin endpoints.',
+        parameters: [{ name: 'request', description: 'Share and the selection to store.' }],
+        returns: 'The capability selection the share now carries.',
+      },
+      {
+        signature: '@Remote(\'capabilities\') capabilities(): ShareCapabilityOffers',
+        description: 'Read the endpoints plugins currently offer.',
+        parameters: [],
+        returns: 'The live offer list.',
+      },
+      {
+        signature: '@Remote(\'relay\') relay(): OwnerRelayState',
+        description: 'Read the Liveshare server address the owner saved.',
+        parameters: [],
+        returns: 'The current Liveshare server state, with both address fields absent while none is saved.',
+      },
+      {
+        signature: '@Remote(\'setRelay\') setRelay(request: SetRelayRequest): Promise<OwnerRelayState>',
+        description: 'Choose the Liveshare server address later shares publish to.',
+        parameters: [{ name: 'request', description: 'Normalized address or null to clear the saved one.' }],
+        returns: 'The Liveshare server state after the change.',
+      },
+      {
+        signature: '@Remote(\'identity\') identity(request: OwnerIdentityRequest): Promise<OwnerIdentityStatus>',
+        description: 'Report this host\'s owner identity for one Liveshare server address.',
+        parameters: [{ name: 'request', description: 'Address to report, or the effective one when absent.' }],
+        returns: 'The owner identity status, without the credential.',
+      },
+      {
+        signature: '@Remote(\'audit\') audit(request: ShareAuditRequest): Promise<ShareAudit>',
+        description: 'Read the Liveshare server\'s durable audit trail for one share.',
+        parameters: [{ name: 'request', description: 'Share whose audit is read.' }],
+        returns: 'The audit events, or a structured failure when the Liveshare server cannot answer.',
+      },
+      {
+        signature: '@Remote(\'testRelay\') testRelay(): Promise<RelayConnectivityView>',
+        description: 'Check that the effective Liveshare server answers at all.',
+        parameters: [],
+        returns: 'The anonymous connectivity result.',
+      },
+      {
+        signature: '@Remote(\'testPublish\') testPublish(request: TestPublishRequest): Promise<RelayPublishView>',
+        description: 'Register one throwaway share to check whether this host may publish.',
+        parameters: [{ name: 'request', description: 'Session the throwaway registration names.' }],
+        returns: 'The Liveshare server\'s decision about this host\'s credential.',
+      },
+    ],
+  },
   {
     key: 'llm',
     summary: 'The abstract `llm` service: an adapter registry plus a streaming model-call API, interceptable via the `llm/stream` waterfall.',
@@ -2173,7 +2278,7 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
       },
       {
         signature: '@Remote installBundle(spec: string, options?: InstallBundleOptions): Promise<ChangeResult>',
-        description: 'Install a package using the same pnpm implementation as dsh plugin. GitHub repositories get a connection check bounded by githubConnectionTimeoutMs before pnpm starts; only network failures or timeouts stop installation, while pnpm owns authentication and transport fallback. An HTTP(S) Git URL on another host is installed over SSH instead when access probes bounded by gitTransportTimeoutMs find that only SSH can read it. A run that fails, is cancelled, or adds a package without a bundle patch restores `package.json` and `pnpm-lock.yaml` as they were; downloaded files can stay.',
+        description: 'Install a package using the same pnpm implementation as dsh plugin. GitHub repositories get a connection check bounded by githubConnectionTimeoutMs before pnpm starts; only network failures or timeouts stop installation, and a stop streams the check\'s diagnostic as the installation\'s install-log run under its request id, while pnpm owns authentication and transport fallback. An HTTP(S) Git URL on another host is installed over SSH instead when access probes bounded by gitTransportTimeoutMs find that only SSH can read it. A run that fails, is cancelled, or adds a package without a bundle patch restores `package.json` and `pnpm-lock.yaml` as they were; downloaded files can stay.',
         parameters: [{ name: 'spec', description: 'One package spec, including local paths relative to the invocation directory.' }, { name: 'options', description: 'Whether to activate the installed bundle (defaults to true), the request id a cancellation names, the pending build scripts to allow, whether to save an exact dependency, and the registry asked first.' }],
         returns: 'Package-manager diagnostics, the registries asked, and the observed activation outcome.',
       },
@@ -2696,6 +2801,19 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
       },
     ],
   },
+  {
+    key: 'sessionLogDeepSeek',
+    summary: 'Incremental Session-log contributor with caller-owned upload exclusions.',
+    description: 'Incremental Session-log contributor with caller-owned upload exclusions.',
+    methods: [
+      {
+        signature: 'registerExclusion(exclude: SessionLogUploadExclusion): () => Promise<void>',
+        description: 'Exclude matching requests before reading or preparing their log contribution. Any matching rule suppresses both the field and its acceptance callback. With no matching rules, normal upload eligibility applies. A throwing rule fails this contribution; the request-extension registry omits it and reports the error.',
+        parameters: [{ name: 'exclude', description: 'synchronous, side-effect-free predicate; `true` skips this upload.' }],
+        returns: 'effect disposer that removes this registration when called or when the caller unloads.',
+      },
+    ],
+  },
   {
     key: 'sessionPersistence',
     summary: 'Durable append-only session storage addressed through per-session handles.',
@@ -4924,8 +5042,8 @@ export const EVENT_API: readonly EventApiEntry[] = [
     name: 'plugin-manager/install-log',
     mode: 'emit',
     signature: '\'plugin-manager/install-log\'(chunk: PluginInstallLogChunk): void',
-    summary: 'One chunk of a pnpm run\'s output, streamed as the run produces it.',
-    description: 'One chunk of a pnpm run\'s output, streamed as the run produces it.',
+    summary: 'One chunk of an installation run\'s output, streamed as the run produces it.',
+    description: 'One chunk of an installation run\'s output, streamed as the run produces it.',
     parameters: [{ name: 'chunk', description: 'the chunk and the run it belongs to.' }],
   },
   {
@@ -5628,6 +5746,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'CheckState',
     declaration: 'export type CheckState = \'pending\' | \'success\' | \'failure\' | \'neutral\' | \'skipped\' | \'cancelled\';',
   },
+  {
+    name: 'ClaimOutcome',
+    declaration: 'export interface ClaimOutcome {\n    readonly claimed: number;\n    readonly skipped: number;\n}',
+  },
   {
     name: 'ClientArtifactBaseline',
     declaration: 'export interface ClientArtifactBaseline {\n    readonly path: string;\n    readonly mtimeMs: number;\n    readonly ctimeMs: number;\n    readonly size: number;\n}',
@@ -5888,6 +6010,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'CreateAgentOptions',
     declaration: 'export interface CreateAgentOptions {\n    readonly sessionId: SessionId;\n    readonly parentAgent?: Agent;\n    readonly meta?: {\n        readonly cwd?: string;\n        readonly parentSession?: SessionId;\n        readonly isSeeded?: boolean;\n        readonly origin?: \'subagent\';\n        readonly delegationDepth?: number;\n        readonly agentPreset?: string;\n    };\n    readonly inheritedEventCount?: SessionLogOffset;\n    readonly seed?: readonly SessionEvent[];\n    readonly agentOptions?: AgentOptions;\n    readonly signal?: AbortSignal;\n    readonly setup?: AgentSetup;\n}',
   },
+  {
+    name: 'CreatedShare',
+    declaration: 'export interface CreatedShare {\n    readonly link: string;\n    readonly shareId: string;\n    readonly sessionId: string;\n    readonly sessionMode: \'view\' | \'write\';\n    readonly access: ShareAccess;\n}',
+  },
   {
     name: 'CreatedWorktree',
     declaration: 'export interface CreatedWorktree {\n    path: string;\n    branch: string;\n    baseCommit: string;\n    repositoryRoot: string;\n}',
@@ -5904,6 +6030,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'CreateSessionOptions',
     declaration: 'export interface CreateSessionOptions {\n    readonly seed?: readonly SessionEvent[];\n    readonly inheritedEventCount?: SessionLogOffset;\n    readonly meta?: {\n        readonly cwd?: string;\n        readonly parentSession?: SessionId;\n        readonly createdAt?: number;\n        readonly isSeeded?: boolean;\n        readonly origin?: \'subagent\';\n        readonly delegationDepth?: number;\n        readonly agentPreset?: string;\n    };\n}',
   },
+  {
+    name: 'CreateShareRequest',
+    declaration: 'export interface CreateShareRequest {\n    readonly sessionId: string;\n    readonly sessionTitle?: string;\n    readonly accessMode?: \'open\' | \'selected\';\n    readonly ttlMinutes?: number;\n    readonly allowedSubjectIds?: readonly string[];\n    readonly allowsFork?: boolean;\n    readonly sessionMode?: \'view\' | \'write\';\n}',
+  },
   {
     name: 'CreateTeamTaskRequest',
     declaration: 'export interface CreateTeamTaskRequest {\n    readonly subject: string;\n    readonly description: string;\n    readonly blockedBy?: readonly TeamTaskId[];\n    readonly writeScopes?: readonly string[];\n}',
@@ -5990,7 +6120,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'DeepSeekLlmApiExtensionRequest',
-    declaration: 'export interface DeepSeekLlmApiExtensionRequest {\n    readonly body: Readonly<Record<string, DeepSeekLlmApiJson>>;\n    readonly sessionId?: string;\n    readonly purpose?: \'compaction\' | \'session-title\';\n    readonly signal: AbortSignal;\n}',
+    declaration: 'export interface DeepSeekLlmApiExtensionRequest {\n    readonly body: Readonly<Record<string, DeepSeekLlmApiJson>>;\n    readonly sessionId?: string;\n    readonly purpose?: string;\n    readonly signal: AbortSignal;\n}',
   },
   {
     name: 'DeepSeekLlmApiJson',
@@ -6232,6 +6362,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'ForgeFailure',
     declaration: 'export interface ForgeFailure {\n    readonly code: \'not-found\' | \'unauthenticated\' | \'too-large\' | \'unavailable\';\n    readonly message: string;\n}',
   },
+  {
+    name: 'ForgeLineComment',
+    declaration: 'export interface ForgeLineComment {\n    readonly path: string;\n    readonly side: \'L\' | \'R\';\n    readonly startLine: number;\n    readonly endLine: number;\n    readonly body: string;\n}',
+  },
   {
     name: 'ForgeLocalChanges',
     declaration: 'export interface ForgeLocalChanges {\n    readonly base: string;\n    readonly files: readonly ForgeChangedFile[];\n}',
@@ -6262,7 +6396,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'ForgeProvider',
-    declaration: 'export interface ForgeProvider {\n    readonly forge: string;\n    repositoryFromRemote(url: string): ForgeRepository | undefined;\n    changeRequestFromUrl(url: string): ChangeRequestRef | undefined;\n    changeRequestUrl(ref: ChangeRequestRef): string;\n    fetch(refs: readonly ChangeRequestRef[], signal: AbortSignal): Promise<ReadonlyMap<ChangeRequestKey, ChangeRequestSnapshot | ForgeFailure>>;\n    findByHead(repository: ForgeRepository, branch: string, signal: AbortSignal): Promise<readonly ChangeRequestRef[]>;\n    readiness(host: string, signal: AbortSignal): Promise<ForgeReadiness>;\n    markReady(ref: ChangeRequestRef, signal: AbortSignal): Promise<ForgeActionFailure | undefined>;\n    merge(ref: ChangeRequestRef, request: MergeRequest, signal: AbortSignal): Promise<ForgeActionFailure | undefined>;\n    diff(ref: ChangeRequestRef, signal: AbortSignal): Promise<string | ForgeFailure>;\n    fileText(ref: ChangeRequestRef, commit: string, path: string, signal: AbortSignal): Promise<string | ForgeFailure>;\n    fileUrl(ref: ChangeRequestRef, commit: string, path: string): string;\n}',
+    declaration: 'export interface ForgeProvider {\n    readonly forge: string;\n    submitReview?(ref: ChangeRequestRef, request: ForgeReviewRequest, signal: AbortSignal): Promise<ForgeReviewResult>;\n    repositoryFromRemote(url: string): ForgeRepository | undefined;\n    changeRequestFromUrl(url: string): ChangeRequestRef | undefined;\n    changeRequestUrl(ref: ChangeRequestRef): string;\n    fetch(refs: readonly ChangeRequestRef[], signal: AbortSignal): Promise<ReadonlyMap<ChangeRequestKey, ChangeRequestSnapshot | ForgeFailure>>;\n    fetchChecks?(ref: ChangeRequestRef, signal: AbortSignal): Promise<ChangeRequestSnapshot | ForgeFailure>;\n    findByHead(repository: ForgeRepository, branch: string, signal: AbortSignal): Promise<readonly ChangeRequestRef[]>;\n    readiness(host: string, signal: AbortSignal): Promise<ForgeReadiness>;\n    markReady(ref: ChangeRequestRef, signal: AbortSignal): Promise<ForgeActionFailure | undefined>;\n    merge(ref: ChangeRequestRef, request: MergeRequest, signal: AbortSignal): Promise<ForgeActionFailure | undefined>;\n    diff(ref: ChangeRequestRef, signal: AbortSignal): Promise<string | ForgeFailure>;\n    fileText(ref: ChangeRequestRef, commit: string, path: string, signal: AbortSignal): Promise<string | ForgeFailure>;\n    fileUrl(ref: ChangeRequestRef, commit: string, path: string): string;\n}',
   },
   {
     name: 'ForgeReadiness',
@@ -6272,6 +6406,14 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'ForgeRepository',
     declaration: 'export interface ForgeRepository {\n    readonly forge: string;\n    readonly host: string;\n    readonly owner: string;\n    readonly name: string;\n}',
   },
+  {
+    name: 'ForgeReviewRequest',
+    declaration: 'export type ForgeReviewRequest = {\n    readonly headSha: string;\n} & ({\n    readonly kind: \'comment\';\n    readonly comment: ForgeLineComment;\n} | {\n    readonly kind: \'review\';\n    readonly event: \'comment\' | \'approve\' | \'request-changes\';\n    readonly body: string;\n    readonly comments: readonly ForgeLineComment[];\n});',
+  },
+  {
+    name: 'ForgeReviewResult',
+    declaration: 'export type ForgeReviewResult = {\n    readonly ok: true;\n    readonly url: string;\n} | {\n    readonly ok: false;\n    readonly code: \'unsupported\' | \'stale\' | \'failed\' | \'unknown\';\n    readonly message: string;\n};',
+  },
   {
     name: 'ForgeSessionWorktree',
     declaration: 'export interface ForgeSessionWorktree {\n    readonly path: string;\n    readonly branch: string;\n    readonly from: string | null;\n    readonly baseCommit: string;\n    readonly repositoryRoot: string;\n}',
@@ -6350,7 +6492,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'GenerateOptions',
-    declaration: 'export interface GenerateOptions {\n    provider: string;\n    model: string;\n    reasoningEffort?: ReasoningEffortId;\n    messages: RequestMessage[];\n    system?: string;\n    tools?: ToolSchema[];\n    toolHistory?: ToolHistory;\n    temperature?: number;\n    maxTokens?: number;\n    stop?: string[];\n    signal?: AbortSignal;\n    sessionId?: Branded<\'SessionId\'>;\n    purpose?: \'compaction\' | \'session-title\';\n}',
+    declaration: 'export interface GenerateOptions<Purpose extends string = LlmRequestPurpose> {\n    provider: string;\n    model: string;\n    reasoningEffort?: ReasoningEffortId;\n    messages: RequestMessage[];\n    system?: string;\n    tools?: ToolSchema[];\n    toolHistory?: ToolHistory;\n    temperature?: number;\n    maxTokens?: number;\n    stop?: string[];\n    signal?: AbortSignal;\n    sessionId?: Branded<\'SessionId\'>;\n    purpose?: Purpose;\n}',
   },
   {
     name: 'GenericCallView',
@@ -6764,6 +6906,14 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'LlmReasoningEffortInfo',
     declaration: 'export interface LlmReasoningEffortInfo {\n    id: ReasoningEffortId;\n    name: string;\n    description?: string;\n}',
   },
+  {
+    name: 'LlmRequestPurpose',
+    declaration: 'export type LlmRequestPurpose = Extract<keyof LlmRequestPurposeMap, string>;',
+  },
+  {
+    name: 'LlmRequestPurposeMap',
+    declaration: 'export interface LlmRequestPurposeMap {\n}',
+  },
   {
     name: 'LlmResolvedModelInfo',
     declaration: 'export interface LlmResolvedModelInfo extends LlmModelInfo {\n    context?: LlmModelContext;\n    defaultMaxTokens?: number;\n    reasoning?: LlmModelReasoningInfo;\n    systemPromptUpdate?: SystemPromptUpdate;\n    toolUpdate?: ToolUpdate;\n}',
@@ -7152,6 +7302,30 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'OTelEventScalar',
     declaration: 'export type OTelEventScalar = string | number | boolean;',
   },
+  {
+    name: 'OwnerIdentityRequest',
+    declaration: 'export interface OwnerIdentityRequest {\n    readonly relay?: string;\n}',
+  },
+  {
+    name: 'OwnerIdentityState',
+    declaration: 'export type OwnerIdentityState = \'verified\' | \'expired\' | \'unverified\' | \'relay-unsupported\';',
+  },
+  {
+    name: 'OwnerIdentityStatus',
+    declaration: 'export interface OwnerIdentityStatus {\n    readonly state: OwnerIdentityState;\n    readonly relay: string;\n    readonly displayName?: string;\n    readonly subjectId?: string;\n    readonly avatarUrl?: string;\n    readonly expiresAt?: string;\n    readonly renewed?: boolean;\n    readonly claim?: ClaimOutcome;\n}',
+  },
+  {
+    name: 'OwnerRelayState',
+    declaration: 'export interface OwnerRelayState {\n    readonly configured?: string;\n    readonly override?: string;\n    readonly effective?: string;\n}',
+  },
+  {
+    name: 'OwnerShareList',
+    declaration: 'export interface OwnerShareList {\n    readonly shares: readonly OwnerShareView[];\n}',
+  },
+  {
+    name: 'OwnerShareView',
+    declaration: 'export interface OwnerShareView {\n    readonly shareId: string;\n    readonly sessionId: string;\n    readonly sessionTitle: string;\n    readonly link: string;\n    readonly createdAt: string;\n    readonly expiresAt?: string;\n    readonly allowsFork: boolean;\n    readonly sessionMode: \'view\' | \'write\';\n    readonly viewerCapabilities: readonly ShareCapabilityGroup[];\n    readonly online: boolean;\n    readonly access?: ShareAccess;\n}',
+  },
   {
     name: 'PackageResult',
     declaration: 'export interface PackageResult {\n    exitCode: number;\n    output: string;\n    truncated: boolean;\n    logPath: string;\n    kind?: PluginInstallFailureKind;\n    timedOut?: boolean;\n    incompatible?: IncompatiblePlugin[];\n}',
@@ -7548,6 +7722,14 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'RegistryAttempt',
     declaration: 'export interface RegistryAttempt {\n    readonly registry: Registry;\n    readonly problem?: \'not-found\' | \'network\' | \'unknown\';\n    readonly reason?: string;\n}',
   },
+  {
+    name: 'RelayConnectivityView',
+    declaration: 'export interface RelayConnectivityView {\n    readonly ok: boolean;\n    readonly httpReachable: boolean;\n    readonly blocking: boolean;\n    readonly error?: string;\n}',
+  },
+  {
+    name: 'RelayPublishView',
+    declaration: 'export interface RelayPublishView {\n    readonly ok: boolean;\n    readonly blocking: boolean;\n    readonly error?: string;\n}',
+  },
   {
     name: 'Reload',
     declaration: 'export interface Reload {\n    filename: string;\n    modules: ReloadModules;\n    runtime?: Plugin.Runtime | undefined;\n}',
@@ -8176,6 +8358,14 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'SessionLogSnapshot',
     declaration: 'export interface SessionLogSnapshot {\n    session: SessionHeader;\n    inheritedEventCount: SessionLogOffset;\n    events: SessionEvent[];\n}',
   },
+  {
+    name: 'SessionLogUploadExclusion',
+    declaration: 'export type SessionLogUploadExclusion = (request: SessionLogUploadRequest) => boolean;',
+  },
+  {
+    name: 'SessionLogUploadRequest',
+    declaration: 'export interface SessionLogUploadRequest {\n    readonly sessionId: SessionId;\n    readonly purpose?: string;\n}',
+  },
   {
     name: 'SessionMessage',
     declaration: 'export interface SessionMessage {\n    role: \'user\' | \'assistant\';\n    text: string;\n    toolUses: ToolUseSummary[];\n}',
@@ -8520,6 +8710,14 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'SessionWorkspacePathApplication',
     declaration: 'export type SessionWorkspacePathApplication = NativeFileApplication;',
   },
+  {
+    name: 'SetRelayRequest',
+    declaration: 'export interface SetRelayRequest {\n    readonly relayUrl: string | null;\n}',
+  },
+  {
+    name: 'SetShareCapabilitiesRequest',
+    declaration: 'export interface SetShareCapabilitiesRequest {\n    readonly shareId: string;\n    readonly capabilities?: readonly ShareCapabilityGroup[];\n}',
+  },
   {
     name: 'SettingsDescribeOptions',
     declaration: 'export interface SettingsDescribeOptions {\n    redactSecrets?: boolean;\n}',
@@ -8556,6 +8754,38 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'SettingsSecretView',
     declaration: 'export interface SettingsSecretView {\n    path: string[];\n    set: boolean;\n}',
   },
+  {
+    name: 'ShareAccess',
+    declaration: 'export interface ShareAccess {\n    readonly mode: \'open\' | \'selected\';\n    readonly selected: readonly ShareAccessSelection[];\n    readonly deploymentAllowedSubjectIds: readonly string[];\n    readonly shareAllowedSubjectIds: readonly string[];\n    readonly broadenedByDeploymentSubjects: boolean;\n    readonly identityKeyAcl: true;\n}',
+  },
+  {
+    name: 'ShareAccessSelection',
+    declaration: 'export interface ShareAccessSelection {\n    readonly providerId: string;\n    readonly tenantId: string;\n    readonly subjectId: string;\n    readonly identityKey: string;\n}',
+  },
+  {
+    name: 'ShareAudit',
+    declaration: 'export interface ShareAudit {\n    readonly events: readonly ShareAuditEntryView[];\n}',
+  },
+  {
+    name: 'ShareAuditEntryView',
+    declaration: 'export interface ShareAuditEntryView {\n    readonly id: string;\n    readonly action: string;\n    readonly createdAt: string;\n    readonly actor?: string;\n    readonly detail?: JsonValue;\n}',
+  },
+  {
+    name: 'ShareAuditRequest',
+    declaration: 'export interface ShareAuditRequest {\n    readonly shareId: string;\n}',
+  },
+  {
+    name: 'ShareCapabilities',
+    declaration: 'export interface ShareCapabilities {\n    readonly shareId: string;\n    readonly viewerCapabilities: readonly ShareCapabilityGroup[];\n}',
+  },
+  {
+    name: 'ShareCapabilityGroup',
+    declaration: 'export interface ShareCapabilityGroup {\n    readonly plugin: string;\n    readonly readable: readonly string[];\n    readonly writable: readonly string[];\n}',
+  },
+  {
+    name: 'ShareCapabilityOffers',
+    declaration: 'export interface ShareCapabilityOffers {\n    readonly capabilities: readonly ShareCapabilityGroup[];\n}',
+  },
   {
     name: 'ShellExecRequest',
     declaration: 'export interface ShellExecRequest {\n    command: string;\n    workdir?: string | undefined;\n    timeoutMs?: number | undefined;\n    onExpiry?: ShellExpiryPolicy | undefined;\n    stdoutMaxBytes?: number | undefined;\n    signal?: AbortSignal | undefined;\n    stdin?: string | undefined;\n    env?: Record<string, string> | undefined;\n    dshEnv?: DshEnvironment | undefined;\n    sandboxPolicy?: SandboxExecutionPolicy | undefined;\n}',
@@ -8776,6 +9006,14 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'StagedAttachment',
     declaration: 'export type StagedAttachment = {\n    readonly type: \'file\';\n    readonly attachment: FileAttachmentRef;\n} | {\n    readonly type: \'image\';\n    readonly attachment: ImageAttachmentRef;\n    readonly encodedBytes: number;\n};',
   },
+  {
+    name: 'StopShareRequest',
+    declaration: 'export interface StopShareRequest {\n    readonly shareId: string;\n}',
+  },
+  {
+    name: 'StopShareResult',
+    declaration: 'export interface StopShareResult {\n    readonly ok: true;\n    readonly relay?: \'unreachable\';\n}',
+  },
   {
     name: 'StorageBackend',
     declaration: 'export interface StorageBackend {\n    readonly kv?: KvFacet;\n    close(): Promise<void>;\n}',
@@ -9132,6 +9370,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'TerminalWaitReason',
     declaration: 'export type TerminalWaitReason = \'stdin_read\' | \'inferred_idle\' | \'timeout\' | \'session_exit\';',
   },
+  {
+    name: 'TestPublishRequest',
+    declaration: 'export interface TestPublishRequest {\n    readonly sessionId: string;\n}',
+  },
   {
     name: 'TextProps',
     declaration: 'export interface TextProps {\n    readonly color?: string | undefined;\n    readonly bold?: boolean | undefined;\n    readonly dimColor?: boolean | undefined;\n    readonly italic?: boolean | undefined;\n    readonly underline?: boolean | undefined;\n    readonly children?: UiNode | undefined;\n}',
@@ -9536,6 +9778,10 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'UpdateBundleOptions',
     declaration: 'export interface UpdateBundleOptions {\n    readonly registry?: Registry;\n    readonly requestId?: PluginInstallRequestId;\n}',
   },
+  {
+    name: 'UpdateSharePermissionsRequest',
+    declaration: 'export interface UpdateSharePermissionsRequest {\n    readonly shareId: string;\n    readonly sessionMode?: \'view\' | \'write\';\n    readonly allowsFork?: boolean;\n    readonly ttlMinutes?: number | null;\n}',
+  },
   {
     name: 'UpdateTeamTaskRequest',
     declaration: 'export interface UpdateTeamTaskRequest {\n    readonly taskId: TeamTaskId;\n    readonly expectedRevision: number;\n    readonly action: TeamTaskAction;\n    readonly subject?: string;\n    readonly description?: string;\n    readonly blockedBy?: readonly TeamTaskId[];\n    readonly writeScopes?: readonly string[];\n    readonly owner?: string;\n}',
diff --git a/packages/extensions/ui-cordis/package.json b/packages/extensions/ui-cordis/package.json
index c5ab510206..b1230c7975 100644
--- a/packages/extensions/ui-cordis/package.json
+++ b/packages/extensions/ui-cordis/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-ui-cordis",
   "description": "Cordis dynamic-plugin definition card: the keyed cordis_define tool row with its run/stop switch",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/feedback/command-feedback/package.json b/packages/feedback/command-feedback/package.json
index 8f0b353101..143937529d 100644
--- a/packages/feedback/command-feedback/package.json
+++ b/packages/feedback/command-feedback/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-command-feedback",
   "description": "Log-only session feedback: the record event, the sessionFeedback Host Remote, and the human-facing slash command",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/feedback/message-feedback/package.json b/packages/feedback/message-feedback/package.json
index db5fd0a46d..a869e380de 100644
--- a/packages/feedback/message-feedback/package.json
+++ b/packages/feedback/message-feedback/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-message-feedback",
   "description": "Canonical Session-log ratings and notes for finalized assistant messages",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/fs/fs-local/package.json b/packages/fs/fs-local/package.json
index c6adcfa9c8..b26264aa72 100644
--- a/packages/fs/fs-local/package.json
+++ b/packages/fs/fs-local/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-fs-local",
   "description": "Local-filesystem implementation of the DeepSeek Harness filesystem seam (ctx.fs)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/fs/fs-observation-policy/package.json b/packages/fs/fs-observation-policy/package.json
index f4bcaad03f..13e9582f92 100644
--- a/packages/fs/fs-observation-policy/package.json
+++ b/packages/fs/fs-observation-policy/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-fs-observation-policy",
   "description": "File-context policy plugin for the DeepSeek Harness — observed-state, read-before-edit, and version-guarded write/edit added over the ctx.fs provider seam through the fs/* event gate (no service API)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/fs/fs-sandbox/package.json b/packages/fs/fs-sandbox/package.json
index 68ea3b1294..c79debb7b6 100644
--- a/packages/fs/fs-sandbox/package.json
+++ b/packages/fs/fs-sandbox/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-fs-sandbox",
   "description": "Sandbox-enforcing implementation of the DeepSeek Harness filesystem seam: fences write/edit by the per-call sandbox mode (read-only denies mutation, workspace-write contains it to the workspace + temp roots) while reads pass through",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/fs/fs/package.json b/packages/fs/fs/package.json
index 7232b0d4f1..0adc54c3e7 100644
--- a/packages/fs/fs/package.json
+++ b/packages/fs/fs/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-fs",
   "description": "Abstract filesystem capability seam (ctx.fs) for the DeepSeek Harness — vocabulary types, the FileSystem service (text IO + optional version-guarded atomic mutations), and the fs/* policy event vocabulary",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/fs/tool-fs-search/package.json b/packages/fs/tool-fs-search/package.json
index 1d759b2d30..f8fe96cf80 100644
--- a/packages/fs/tool-fs-search/package.json
+++ b/packages/fs/tool-fs-search/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-fs-search",
   "description": "Model-facing filesystem discovery tools (glob, grep) backed by the packaged ripgrep binary (@vscode/ripgrep)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/fs/tool-fs/package.json b/packages/fs/tool-fs/package.json
index 9a97fb5fdd..b48a8ea2bb 100644
--- a/packages/fs/tool-fs/package.json
+++ b/packages/fs/tool-fs/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-fs",
   "description": "Model-facing filesystem tools (read, write, edit) over the DeepSeek Harness filesystem seam (ctx.fs)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/fs/tool-str-replace-editor/package.json b/packages/fs/tool-str-replace-editor/package.json
index d37514a694..c469f14ec3 100644
--- a/packages/fs/tool-str-replace-editor/package.json
+++ b/packages/fs/tool-str-replace-editor/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-str-replace-editor",
   "description": "Model-facing view, create, literal replace, and line insert tool over the Harness filesystem service",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/goal/command-goal/package.json b/packages/goal/command-goal/package.json
index f9956cadc7..266d642ad4 100644
--- a/packages/goal/command-goal/package.json
+++ b/packages/goal/command-goal/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-command-goal",
   "description": "Human-facing slash command for persisted same-session goals",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/goal/goal-round-driver/package.json b/packages/goal/goal-round-driver/package.json
index 32bddb048d..141fadd21e 100644
--- a/packages/goal/goal-round-driver/package.json
+++ b/packages/goal/goal-round-driver/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-goal-round-driver",
   "description": "Race-fenced same-session goal-round driver",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/goal/goal/package.json b/packages/goal/goal/package.json
index 3b50f77d98..2fecb63c7c 100644
--- a/packages/goal/goal/package.json
+++ b/packages/goal/goal/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-goal",
   "description": "Event-sourced same-session goal state and lifecycle service for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/goal/goal/tests/goal.spec.ts b/packages/goal/goal/tests/goal.spec.ts
index 61f69a7db0..363540ab3c 100644
--- a/packages/goal/goal/tests/goal.spec.ts
+++ b/packages/goal/goal/tests/goal.spec.ts
@@ -291,7 +291,7 @@ describe('GoalService creation and replay', () => {
     await fiber.dispose()
     expect(ctx.get('goals')).toBeUndefined()
     expect(ctx.sessionProjections.checkpoint(stub.session).goal?.val).toBeUndefined()
-    expect(first.get(stub.agent)).toMatchObject({ id: goal.id })
+    expect(() => first.get(stub.agent)).toThrow('cannot get required service "agents" in inactive context')
 
     await ctx.plugin(GoalService)
     expect(ctx.goals).not.toBe(first)
diff --git a/packages/goal/tool-goal/package.json b/packages/goal/tool-goal/package.json
index bda186c42d..af95bed6b8 100644
--- a/packages/goal/tool-goal/package.json
+++ b/packages/goal/tool-goal/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-goal",
   "description": "Model-facing same-session goal tools with execution-time authority checks",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/guard/repeat-tool-reminder/package.json b/packages/guard/repeat-tool-reminder/package.json
index ed02d5ada5..e077bd6e49 100644
--- a/packages/guard/repeat-tool-reminder/package.json
+++ b/packages/guard/repeat-tool-reminder/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-repeat-tool-reminder",
   "description": "Repeat-tool-call guard plugin: advisory reminders when an agent loops on identical tool calls",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/guard/timeout-policy/package.json b/packages/guard/timeout-policy/package.json
index 30e0adcd0f..fefd66e866 100644
--- a/packages/guard/timeout-policy/package.json
+++ b/packages/guard/timeout-policy/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-call-timeout-policy",
   "description": "Tool-call timeout policy: a tools/execute wrapper that arms a per-tool deadline on exec.signal and returns TOOL_TIMEOUT when it wins",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/host/directory-picker-auto/package.json b/packages/host/directory-picker-auto/package.json
index 78366a57a1..053aaef42e 100644
--- a/packages/host/directory-picker-auto/package.json
+++ b/packages/host/directory-picker-auto/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-host-directory-picker-auto",
   "description": "Adaptive chooser of the directory-picker seam: resolves the host situation at boot and mounts the native or browse backend for the DeepSeek Harness web GUI host",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/host/directory-picker-browse/package.json b/packages/host/directory-picker-browse/package.json
index 763edd56bc..2900f722a6 100644
--- a/packages/host/directory-picker-browse/package.json
+++ b/packages/host/directory-picker-browse/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-host-directory-picker-browse",
   "description": "In-app browsing backend of the directory-picker seam (listing/creation primitives over the host filesystem)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/host/directory-picker-native/package.json b/packages/host/directory-picker-native/package.json
index 79317ba522..a89d2be8e9 100644
--- a/packages/host/directory-picker-native/package.json
+++ b/packages/host/directory-picker-native/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-host-directory-picker-native",
   "description": "Native-OS-chooser backend of the directory-picker seam for the DeepSeek Harness web GUI host",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/host/directory-picker/package.json b/packages/host/directory-picker/package.json
index dc5ac094e7..ed0fd0804e 100644
--- a/packages/host/directory-picker/package.json
+++ b/packages/host/directory-picker/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-host-directory-picker",
   "description": "Abstract workspace-directory picking seam (ctx.directoryPicker) for the DeepSeek Harness web GUI host",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/host/frontend-static/package.json b/packages/host/frontend-static/package.json
index ef1a77d591..d7a5588ed0 100644
--- a/packages/host/frontend-static/package.json
+++ b/packages/host/frontend-static/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-host-frontend-static",
   "description": "SPA dist server for the Web shell: owns the webserver fallback seat, serving explicit index entries and static assets with traversal rejection and 404 misses",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/host/open-in-app/package.json b/packages/host/open-in-app/package.json
index 713993fe78..7cd40cd394 100644
--- a/packages/host/open-in-app/package.json
+++ b/packages/host/open-in-app/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-host-open-in-app",
   "description": "Host half of open-in-app: resolved application catalog, icons, and the launch endpoint as three webServer routes",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/host/plugin-inventory/package.json b/packages/host/plugin-inventory/package.json
index a532a09cfd..6dc858f855 100644
--- a/packages/host/plugin-inventory/package.json
+++ b/packages/host/plugin-inventory/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-host-plugin-inventory",
   "description": "Read-only Remote projection of current Cordis Loader plugin state",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/host/product-telemetry-otel/package.json b/packages/host/product-telemetry-otel/package.json
index e832fdb321..6f07987e14 100644
--- a/packages/host/product-telemetry-otel/package.json
+++ b/packages/host/product-telemetry-otel/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-host-product-telemetry-otel",
   "description": "Explicit product usage events exported through OpenTelemetry HTTP logs",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/host/webserver/package.json b/packages/host/webserver/package.json
index 7786f14500..3a89137d8d 100644
--- a/packages/host/webserver/package.json
+++ b/packages/host/webserver/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-host-webserver",
   "description": "Web route-registration plugin: HTTP and upgrade routes, per-Peer index transform taps, and static dist fallback",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/identity/anonymous-user-id/package.json b/packages/identity/anonymous-user-id/package.json
index 9a00227b6d..0e4eb13f19 100644
--- a/packages/identity/anonymous-user-id/package.json
+++ b/packages/identity/anonymous-user-id/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-anonymous-user-id",
   "description": "Shared anonymous user identity for DeepSeek Harness telemetry and feedback correlation",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/interaction/commands/package.json b/packages/interaction/commands/package.json
index 8941452320..553ce6686a 100644
--- a/packages/interaction/commands/package.json
+++ b/packages/interaction/commands/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-commands",
   "description": "Plugin-owned human command registry for DeepSeek Harness UIs",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/interaction/permission-presets/package.json b/packages/interaction/permission-presets/package.json
index ecc80fe8ea..635ccf409e 100644
--- a/packages/interaction/permission-presets/package.json
+++ b/packages/interaction/permission-presets/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-permission-presets",
   "description": "User-facing permission presets (ctx.permissionPresets) for the DeepSeek Harness: one product-level Permissions select bundling the sandbox-mode and approval-policy knobs, written through to their own session events",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/interaction/tool-ask-user/package.json b/packages/interaction/tool-ask-user/package.json
index 93af40c99e..bbf3065e2b 100644
--- a/packages/interaction/tool-ask-user/package.json
+++ b/packages/interaction/tool-ask-user/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-ask-user",
   "description": "Model-facing ask_user_question tool over the ctx.userQuestions seam",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/interaction/user-approval/package.json b/packages/interaction/user-approval/package.json
index 3af358c9de..1bb5fed321 100644
--- a/packages/interaction/user-approval/package.json
+++ b/packages/interaction/user-approval/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-user-approval",
   "description": "User-approval seam (ctx.approval) for the DeepSeek Harness: one-shot permission decisions dispatched to composed answerers over the approval/request waterfall, fail-closed by default",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/interaction/user-questions/package.json b/packages/interaction/user-questions/package.json
index 8444670986..c9fa3977db 100644
--- a/packages/interaction/user-questions/package.json
+++ b/packages/interaction/user-questions/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-user-questions",
   "description": "Abstract user-questions seam (ctx.userQuestions) for asking the human during agent runs",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/jobs/jobs-local/package.json b/packages/jobs/jobs-local/package.json
index 5872d63839..9d7ca61503 100644
--- a/packages/jobs/jobs-local/package.json
+++ b/packages/jobs/jobs-local/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-jobs-local",
   "description": "Process-local implementation of the DeepSeek Harness background job registry seam",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/jobs/jobs/package.json b/packages/jobs/jobs/package.json
index 47929d75a8..4afa99510f 100644
--- a/packages/jobs/jobs/package.json
+++ b/packages/jobs/jobs/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-jobs",
   "description": "Background job registry (ctx.jobs) for the DeepSeek Harness — shared ids, owner isolation, polling, cancellation, and completion listeners for long-running tool work",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/jobs/tool-jobs/package.json b/packages/jobs/tool-jobs/package.json
index 4b9b2ef97a..08efb3eb3e 100644
--- a/packages/jobs/tool-jobs/package.json
+++ b/packages/jobs/tool-jobs/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-jobs",
   "description": "Model-facing background job control tools (job_output, job_list, job_kill) over the ctx.jobs registry",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/llm/deepseek-llm-api-extensions/README.i18n.yaml b/packages/llm/deepseek-llm-api-extensions/README.i18n.yaml
index a9f16eead6..34a43376e2 100644
--- a/packages/llm/deepseek-llm-api-extensions/README.i18n.yaml
+++ b/packages/llm/deepseek-llm-api-extensions/README.i18n.yaml
@@ -15,8 +15,8 @@
   en: 6b7f62c318c9aad6
   zh: 5e22d58884e60c87
 /deepseek-ai-dsh-deepseek-llm-api-extensions/service:
-  en: d9782207ffab7c50
-  zh: 22c2a10a5f0de61f
+  en: 67cf2183647de143
+  zh: 924aad182c107ed8
 /deepseek-ai-dsh-deepseek-llm-api-extensions/model-experience:
   en: 88a785350ced5c14
   zh: 755349be023a3f5c
diff --git a/packages/llm/deepseek-llm-api-extensions/README.md b/packages/llm/deepseek-llm-api-extensions/README.md
index 410954fcb2..108af40353 100644
--- a/packages/llm/deepseek-llm-api-extensions/README.md
+++ b/packages/llm/deepseek-llm-api-extensions/README.md
@@ -29,6 +29,8 @@ Provider-specific registry for additive top-level fields on official DeepSeek LL
 
 Each provider sees the exact serialized Messages body, the request `AbortSignal`, plus optional `sessionId` and auxiliary-call `purpose`. It must stop its own work promptly after cancellation and returns `undefined` when its field does not apply to that request. A prepared operation retains the providers it captured even if HMR removes their registrations before HTTP acceptance.
 
+Request `purpose` is the producer-defined string forwarded by the adapter, or absent for ordinary conversation requests. The registry forwards unfamiliar purposes without choosing field-specific policy.
+
 The registry owns addition and lifecycle, not field semantics. `@deepseek-ai/dsh-session-log-deepseek` owns `dsh_session_log`; `@deepseek-ai/dsh-plugin-package-inventory-deepseek` owns `dsh_plugin_packages`. The provider-neutral LLM seam and `llm-pi-ai` do not consume this registry.
 
 <a id="model-experience"></a>
diff --git a/packages/llm/deepseek-llm-api-extensions/README.zh.md b/packages/llm/deepseek-llm-api-extensions/README.zh.md
index 50efa0891e..958187632c 100644
--- a/packages/llm/deepseek-llm-api-extensions/README.zh.md
+++ b/packages/llm/deepseek-llm-api-extensions/README.zh.md
@@ -29,6 +29,8 @@ kind: "package-reference"
 
 每个提供方都会看到确切的已序列化 Messages 请求体、请求 `AbortSignal`，以及可选的 `sessionId` 与辅助调用 `purpose`。提供方必须在取消后迅速停止自身工作；字段不适用于当前请求时返回 `undefined`。即使 HMR（热模块替换）在 HTTP 接受前移除了注册，已准备的操作仍会保留其捕获的提供方。
 
+请求的 `purpose` 是适配器转发的生产方自定义字符串，普通对话请求则省略它。注册器转发不熟悉的用途，不替各个字段决定策略。
+
 注册表拥有字段添加与生命周期，不拥有字段语义。`@deepseek-ai/dsh-session-log-deepseek` 拥有 `dsh_session_log`；`@deepseek-ai/dsh-plugin-package-inventory-deepseek` 拥有 `dsh_plugin_packages`。提供方无关的 LLM seam 与 `llm-pi-ai` 都不消费该注册表。
 
 <a id="model-experience"></a>
diff --git a/packages/llm/deepseek-llm-api-extensions/package.json b/packages/llm/deepseek-llm-api-extensions/package.json
index 393618112a..3c1a284692 100644
--- a/packages/llm/deepseek-llm-api-extensions/package.json
+++ b/packages/llm/deepseek-llm-api-extensions/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-deepseek-llm-api-extensions",
   "description": "Additive request-field registry for the official DeepSeek LLM API adapter",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/llm/deepseek-llm-api-extensions/src/types.ts b/packages/llm/deepseek-llm-api-extensions/src/types.ts
index 1e3ccc492b..5ae15265af 100644
--- a/packages/llm/deepseek-llm-api-extensions/src/types.ts
+++ b/packages/llm/deepseek-llm-api-extensions/src/types.ts
@@ -22,7 +22,7 @@ export interface DeepSeekLlmApiExtensionRequest {
   /** Session identity carried by the model request, when present. */
   readonly sessionId?: string
   /** Auxiliary request classification, when present. */
-  readonly purpose?: 'compaction' | 'session-title'
+  readonly purpose?: string
   /** Cancellation for request preparation; providers must stop promptly after abort. */
   readonly signal: AbortSignal
 }
diff --git a/packages/llm/llm-deepseek-account/package.json b/packages/llm/llm-deepseek-account/package.json
index 9402d11a8b..79dbd574fa 100644
--- a/packages/llm/llm-deepseek-account/package.json
+++ b/packages/llm/llm-deepseek-account/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-llm-deepseek-account",
   "description": "DeepSeek account provider authentication and discovery",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/llm/llm-deepseek-api-key/package.json b/packages/llm/llm-deepseek-api-key/package.json
index 02d431ed36..99fcf3af86 100644
--- a/packages/llm/llm-deepseek-api-key/package.json
+++ b/packages/llm/llm-deepseek-api-key/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-llm-deepseek-api-key",
   "description": "DeepSeek api-key provider authentication and discovery",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/llm/llm-deepseek/package.json b/packages/llm/llm-deepseek/package.json
index eab66c28bf..8e20e07c56 100644
--- a/packages/llm/llm-deepseek/package.json
+++ b/packages/llm/llm-deepseek/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-llm-deepseek",
   "description": "DeepSeek Messages adapter",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/llm/llm-deepseek/src/adapter.ts b/packages/llm/llm-deepseek/src/adapter.ts
index 53b288f1f2..df35b6ce3b 100644
--- a/packages/llm/llm-deepseek/src/adapter.ts
+++ b/packages/llm/llm-deepseek/src/adapter.ts
@@ -2,7 +2,7 @@
 
 import { attributionHeaders, LlmAdapter, LlmError } from '@deepseek-ai/dsh-llm'
 import type { GenerateOptions, ImageAttachmentAccessResolver, PreparedAdapterCall, StreamChunk } from '@deepseek-ai/dsh-llm'
-import type { DeepSeekLlmApiJson } from '@deepseek-ai/dsh-deepseek-llm-api-extensions'
+import type { DeepSeekLlmApiExtensionRequest, DeepSeekLlmApiJson } from '@deepseek-ai/dsh-deepseek-llm-api-extensions'
 import { idleWatchdog, timeoutOf } from '@deepseek-ai/dsh-timeout'
 import { modelInfo } from './model-info.ts'
 import type { DeepSeekAdapterOptions, DeepSeekConnectionOptions as Connection } from './types.ts'
@@ -52,7 +52,7 @@ export class DeepSeekAdapter<C extends Connection = Connection> extends LlmAdapt
     this.dependencies.admit?.(connection, model)
     return { model: modelInfo(connection, provider, model), stream: options => this.generate(options, connection) }
   }
-  stream(options: GenerateOptions): AsyncIterable<StreamChunk> {
+  stream(options: GenerateOptions<string>): AsyncIterable<StreamChunk> {
     const connection = this.dependencies.options()
     this.dependencies.admit?.(connection, options.model)
     return this.generate(options, connection)
@@ -62,7 +62,7 @@ export class DeepSeekAdapter<C extends Connection = Connection> extends LlmAdapt
     return this.dependencies.connect?.(signal) ?? Promise.resolve(this.dependencies.options())
   }
 
-  private async * generate(options: GenerateOptions, connection: C): AsyncGenerator<StreamChunk> {
+  private async * generate(options: GenerateOptions<string>, connection: C): AsyncGenerator<StreamChunk> {
     const consumer = new AbortController()
     const signal = options.signal === undefined ? consumer.signal : AbortSignal.any([consumer.signal, options.signal])
     using watchdog = idleWatchdog(signal, connection.streamIdleTimeoutMs, 'MESSAGES_IDLE')
@@ -89,7 +89,7 @@ export class DeepSeekAdapter<C extends Connection = Connection> extends LlmAdapt
   }
 
   private async * request(
-    options: GenerateOptions, connection: C, signal: AbortSignal, activity: () => void,
+    options: GenerateOptions<string>, connection: C, signal: AbortSignal, activity: () => void,
   ): AsyncGenerator<StreamChunk> {
     signal.throwIfAborted()
     const { messages, versions } = await prepareImages(
@@ -119,15 +119,19 @@ export class DeepSeekAdapter<C extends Connection = Connection> extends LlmAdapt
         const body = serialize(options, connection, history, versions, this.imageAccess, (reason) => {
           this.dependencies.onReplayDegrade?.({ provider: options.provider, model: options.model, reason })
         }, fileIds)
-        const extensions = await prepareRequestExtensions(body as Readonly<Record<string, DeepSeekLlmApiJson>>, {
+        const requestIdentity: Omit<DeepSeekLlmApiExtensionRequest, 'body'> = {
           signal,
           ...options.sessionId === undefined ? {} : { sessionId: String(options.sessionId) },
           ...options.purpose === undefined ? {} : { purpose: options.purpose },
-        }, this.dependencies.prepareExtensions, (fields, error) => {
-          this.dependencies.onExtensionsOmitted?.({ provider: options.provider, model: options.model, fields, error })
-        }, (error) => {
-          this.dependencies.onExtensionsUnaccepted?.({ provider: options.provider, model: options.model, error })
-        })
+        }
+        const extensions = await prepareRequestExtensions(
+          body as Readonly<Record<string, DeepSeekLlmApiJson>>, requestIdentity,
+          this.dependencies.prepareExtensions, (fields, error) => {
+            this.dependencies.onExtensionsOmitted?.({ provider: options.provider, model: options.model, fields, error })
+          }, (error) => {
+            this.dependencies.onExtensionsUnaccepted?.({ provider: options.provider, model: options.model, error })
+          },
+        )
         signal.throwIfAborted()
         const betas = [
           ...fileIds !== undefined && fileIds.size > 0 ? [MESSAGES_FILES_BETA] : [],
@@ -145,7 +149,7 @@ export class DeepSeekAdapter<C extends Connection = Connection> extends LlmAdapt
             ...betas.length === 0 ? {} : { 'anthropic-beta': betas.join(',') },
             'x-deepseek-harness-user-id': this.dependencies.resolveUserId(),
             ...options.sessionId === undefined ? {} : { 'x-deepseek-harness-session-id': String(options.sessionId) },
-            ...options.purpose === 'compaction' ? { 'x-deepseek-harness-compact': '1' } : {},
+            ...requestIdentity.purpose === 'compaction' ? { 'x-deepseek-harness-compact': '1' } : {},
           },
         })
         if (!response.ok) {
diff --git a/packages/llm/llm-deepseek/src/serialize.ts b/packages/llm/llm-deepseek/src/serialize.ts
index 095211e8fc..f08412c0e9 100644
--- a/packages/llm/llm-deepseek/src/serialize.ts
+++ b/packages/llm/llm-deepseek/src/serialize.ts
@@ -55,7 +55,7 @@ function assistant(message: Message, model: string, onReplayDegrade?: (reason: s
  * @returns the Messages API JSON body.
  */
 export function serialize(
-  options: GenerateOptions, connection: Connection, history: readonly RequestMessage[],
+  options: GenerateOptions<string>, connection: Connection, history: readonly RequestMessage[],
   images: ReadonlyMap<ImageAttachmentRef['attachmentId'], RequestImageAttachment>, access: ImageAttachmentAccessResolver,
   onReplayDegrade?: (reason: string) => void,
   fileIds?: ReadonlyMap<ImageAttachmentRef['attachmentId'], DeepSeekFileId>,
diff --git a/packages/llm/llm-deepseek/tests/loader-composition.spec.ts b/packages/llm/llm-deepseek/tests/loader-composition.spec.ts
index 32ae51dea9..183c590e2b 100644
--- a/packages/llm/llm-deepseek/tests/loader-composition.spec.ts
+++ b/packages/llm/llm-deepseek/tests/loader-composition.spec.ts
@@ -24,6 +24,20 @@ import { assemble } from './assemble.ts'
 import { closeMockServers, mockServer, textEvents } from './mock-server.ts'
 import { sourceModuleLoader } from './helpers.ts'
 
+declare module '@deepseek-ai/dsh-llm/types' {
+  interface LlmRequestPurposeMap {
+    'test-upload-exclusion': true
+  }
+}
+
+const uploadExclusion = {
+  name: 'test-upload-exclusion',
+  inject: ['sessionLogDeepSeek'],
+  apply(ctx: Context) {
+    ctx.sessionLogDeepSeek.registerExclusion(request => request.purpose === 'test-upload-exclusion')
+  },
+}
+
 const NS = 'llm-deepseek'
 const KEY_REF = credentialRef('DEEPSEEK_API_KEY')
 
@@ -41,7 +55,7 @@ afterEach(async () => {
 })
 
 async function loadComposition(
-  options: { withDynamic: boolean; baseURL: string; reuseRoot?: string; enableSessionLog?: boolean },
+  options: { withDynamic: boolean; baseURL: string; reuseRoot?: string; enableSessionLog?: boolean; exclusionFirst?: boolean },
 ): Promise<{ ctx: Context; settingsPath: string; credentialsPath: string }> {
   // A reused root is the restart case: the same harness home, its documents
   // exactly as the previous process left them.
@@ -67,11 +81,13 @@ async function loadComposition(
     "- name: '@deepseek-ai/dsh-session-projection'",
     '- id: deepseek-llm-api-extensions',
     "  name: '@deepseek-ai/dsh-deepseek-llm-api-extensions'",
+    ...options.exclusionFirst === true ? ["- name: '@test/upload-exclusion'"] : [],
     '- id: session-log-deepseek',
     "  name: '@deepseek-ai/dsh-session-log-deepseek'",
     ...options.enableSessionLog !== undefined
       ? ['  config:', `    enabled: ${String(options.enableSessionLog)}`]
       : [],
+    ...options.exclusionFirst === false ? ["- name: '@test/upload-exclusion'"] : [],
     '- id: plugin-package-inventory-deepseek',
     "  name: '@deepseek-ai/dsh-plugin-package-inventory-deepseek'",
     ...options.withDynamic
@@ -96,6 +112,7 @@ async function loadComposition(
   await ctx.plugin(Loader)
   ctx.loader.builtins.include = Include
   const modules = new Map<string, unknown>([
+    ['@test/upload-exclusion', uploadExclusion],
     ['@deepseek-ai/dsh-llm', LlmRuntime],
     ['@deepseek-ai/dsh-session', SessionStore],
     ['@deepseek-ai/dsh-session-projection', SessionProjectionRegistry],
@@ -251,6 +268,25 @@ describe('llm-deepseek real dynamic composition', () => {
     expect(SessionLogDeepSeek.acceptedThrough(session)).toBe(0)
   })
 
+  it.each([false, true])('applies a registered upload exclusion through HTTP with consumer first=%s', async (exclusionFirst) => {
+    vi.stubEnv('DEEPSEEK_API_KEY', 'entry-key')
+    const server = await mockServer([{ kind: 'sse', events: textEvents }, { kind: 'sse', events: textEvents }])
+    const { ctx } = await loadComposition({ withDynamic: false, baseURL: server.url, exclusionFirst })
+    const session = ctx.sessions.create(SessionId('excluded-composition'))
+    session.append('turn/start', { turn: 1 })
+
+    await assemble(ctx, { model: 'deepseek-v4-flash', messages: [], sessionId: session.id, purpose: 'test-upload-exclusion' })
+    expect(server.headers[0]?.['x-deepseek-harness-session-id']).toBe(session.id)
+    expect(server.requests[0]).not.toHaveProperty('dsh_session_log')
+    expect(server.requests[0]).toHaveProperty('dsh_plugin_packages')
+    expect(SessionLogDeepSeek.acceptedThrough(session)).toBe(-1)
+    expect(session.snapshotEvents()).toHaveLength(1)
+
+    await assemble(ctx, { model: 'deepseek-v4-flash', messages: [], sessionId: session.id })
+    expect(server.requests[1]).toHaveProperty('dsh_session_log')
+    expect(SessionLogDeepSeek.acceptedThrough(session)).toBe(0)
+  })
+
   it('boots from cordis.yml and routes the next request after external settings and credential edits', async () => {
     vi.stubEnv('DEEPSEEK_API_KEY', '')
     const serverA = await mockServer([{ kind: 'sse', events: textEvents }])
diff --git a/packages/llm/llm-pi-ai/package.json b/packages/llm/llm-pi-ai/package.json
index 38852ebd8a..926fd8d914 100644
--- a/packages/llm/llm-pi-ai/package.json
+++ b/packages/llm/llm-pi-ai/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-llm-pi-ai",
   "description": "pi-ai-backed DeepSeek adapter for the DeepSeek Harness LLM seam (design-verification twin of dsh-llm-deepseek)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/llm/llm-pi-ai/src/index.ts b/packages/llm/llm-pi-ai/src/index.ts
index a7b00faa79..7b05531258 100644
--- a/packages/llm/llm-pi-ai/src/index.ts
+++ b/packages/llm/llm-pi-ai/src/index.ts
@@ -174,9 +174,9 @@ export function apply(ctx: Context, config: Config): void {
     return next
   }
   profiles()
-  ctx.on('internal/config', function (this: import('@deepseek-ai/cordis').Fiber, _raw, next) {
+  ctx.on('internal/config', (fiber, next) => {
     const raw: unknown = next()
-    if (this !== ctx.fiber) return raw
+    if (fiber !== ctx.fiber) return raw
     const candidate = Config(raw as import('./config.ts').Options)
     assertServiceable(
       { providers: structuredClone(candidate.providers.get()) } as import('./config.ts').Options,
diff --git a/packages/llm/llm-pi-ai/tests/adapter.spec.ts b/packages/llm/llm-pi-ai/tests/adapter.spec.ts
index a221037a21..bce06c6e73 100644
--- a/packages/llm/llm-pi-ai/tests/adapter.spec.ts
+++ b/packages/llm/llm-pi-ai/tests/adapter.spec.ts
@@ -153,6 +153,27 @@ describe('PiAiAdapter provider routing', () => {
     expect(server.requests[0]).not.toHaveProperty('dsh_plugin_packages')
   })
 
+  it('routes OpenCode Go requests by Session id through its required session header', async () => {
+    const server = await mockServer([{ events: textEvents }, { events: textEvents }])
+    const ctx = new Context()
+    await ctx.plugin(LlmRuntime)
+    ctx.llm.registerAdapter(['opencode-go'], adapterOf({
+      'opencode-go': { apiKeyEnv: 'PI_TEST_KEY', baseURL: `${server.url}/v1` },
+    }))
+
+    await assemble(ctx, {
+      provider: 'opencode-go',
+      model: 'deepseek-v4.1-flash',
+      messages: [],
+      sessionId: 'opencode-session' as never,
+    })
+    await assemble(ctx, { provider: 'opencode-go', model: 'deepseek-v4.1-flash', messages: [] })
+
+    expect(server.paths).toEqual(['/v1/chat/completions', '/v1/chat/completions'])
+    expect(server.headers[0]?.['x-opencode-session']).toBe('opencode-session')
+    expect(server.headers[1]).not.toHaveProperty('x-opencode-session')
+  })
+
   it('uses a dynamic request effort and reports unsupported efforts before network I/O', async () => {
     const server = await mockServer([{ events: textEvents }, { events: textEvents }])
     const ctx = await harness(server.url, { reasoning: 'max' })
diff --git a/packages/llm/llm-retry/package.json b/packages/llm/llm-retry/package.json
index 230aef1c6b..f4b5358a49 100644
--- a/packages/llm/llm-retry/package.json
+++ b/packages/llm/llm-retry/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-llm-retry",
   "description": "Provider-routed LLM request retry policy for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/llm/llm/README.i18n.yaml b/packages/llm/llm/README.i18n.yaml
index 34bb263403..dc90c35071 100644
--- a/packages/llm/llm/README.i18n.yaml
+++ b/packages/llm/llm/README.i18n.yaml
@@ -21,8 +21,8 @@
   en: c3ecb5a1421f27db
   zh: 4bbd3c0e513845e1
 /deepseek-ai-dsh-llm/use-this-package/minimal-composition:
-  en: 9d481d19dc52e404
-  zh: aa09cf4462e93ba6
+  en: cf221d60fb42a278
+  zh: 0ea17503495d386b
 /deepseek-ai-dsh-llm/use-this-package/what-you-can-do:
   en: dc61eb86585f6e0d
   zh: 9c0d6b240dfd2cda
diff --git a/packages/llm/llm/README.md b/packages/llm/llm/README.md
index db7a2c2061..e2c319f53d 100644
--- a/packages/llm/llm/README.md
+++ b/packages/llm/llm/README.md
@@ -58,6 +58,8 @@ for await (const chunk of ctx.llm.stream({
 
 After a successful mount, `ctx.llm.listProviders()` reports the registered routes in registration order.
 
+Auxiliary request producers declare their `purpose` in `LlmRequestPurposeMap` through module augmentation of `@deepseek-ai/dsh-llm/types`; each key maps to `true`. `GenerateOptions.purpose` accepts the declared keys, while ordinary conversation requests omit it. Import the producer package or its public types before constructing that auxiliary request. Adapters carry the purpose as model-hidden transport metadata and handle unfamiliar purposes without rejecting the request.
+
 `GenerateOptions.messages` accepts durable `Message` values and request-only `RequestUserInput` values. Request-only inputs carry user-role content with no `id` or `source`; Session writes and Agent delivery still require durable messages. Callers keep auxiliary inputs unchanged until the stream settles. A caller that records its exact request, such as session-title generation, must use durable messages.
 
 `prepareCall(config, signal, configure?)` accepts concrete `LlmCallConfig` values. The optional synchronous, pure `ConfigureCall` function receives detached, deeply frozen `LlmCallControls` and model metadata from the captured adapter generation. Callers can compose ordinary functions to choose concrete controls; later writes replace earlier ones. Preparation retains the captured route, applies defaults to omitted controls, validates the result, and returns a frozen configuration for recording and dispatch. Callback failures or cancellation reject before dispatch. Preparation requires a registered adapter.
diff --git a/packages/llm/llm/README.zh.md b/packages/llm/llm/README.zh.md
index 0d1973a763..2fd7de3175 100644
--- a/packages/llm/llm/README.zh.md
+++ b/packages/llm/llm/README.zh.md
@@ -58,6 +58,8 @@ for await (const chunk of ctx.llm.stream({
 
 挂载成功后，`ctx.llm.listProviders()` 会按注册顺序报告已注册路由。
 
+辅助请求的生产方通过扩展 `@deepseek-ai/dsh-llm/types` 中的 `LlmRequestPurposeMap` 声明自己的 `purpose`，每个键映射到 `true`。`GenerateOptions.purpose` 接受已声明的键，普通对话请求则省略它。构造辅助请求前，应导入生产方包或其公开类型。适配器将用途作为模型不可见的传输元数据传递，并在遇到不熟悉的用途时继续处理请求。
+
 `GenerateOptions.messages` 接受持久 `Message` 值和仅供请求使用的 `RequestUserInput` 值。仅供请求使用的输入包含 user-role 内容，不含 `id` 或 `source`；Session 写入和 Agent 投递仍然要求持久消息。调用方必须在流结束前保持辅助输入不变。会记录完整请求的调用方（例如会话标题生成）必须使用持久消息。
 
 `prepareCall(config, signal, configure?)` 接受具体的 `LlmCallConfig` 值。可选的同步纯函数 `ConfigureCall` 接收已分离且深度冻结的 `LlmCallControls`，以及捕获的适配器代次所提供的模型元数据。调用方可组合普通函数来选择具体控制项；后执行的写入替换先前的值。准备操作保留捕获的路由，为省略的控制项应用默认值，校验结果，再返回用于记录与分发的冻结配置。回调失败或取消会在分发前拒绝。准备操作要求注册适配器。
diff --git a/packages/llm/llm/package.json b/packages/llm/llm/package.json
index a5c4bf30ed..151739fb11 100644
--- a/packages/llm/llm/package.json
+++ b/packages/llm/llm/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-llm",
   "description": "Provider-neutral LLM service interface for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/llm/llm/src/types.ts b/packages/llm/llm/src/types.ts
index 5c5d4b1e74..8a48b89895 100644
--- a/packages/llm/llm/src/types.ts
+++ b/packages/llm/llm/src/types.ts
@@ -551,8 +551,17 @@ export interface ToolHistory {
   }[]
 }
 
-/** A single model request, fully assembled. */
-export interface GenerateOptions {
+/** Auxiliary request purposes declared by their producer packages. */
+export interface LlmRequestPurposeMap {}
+
+/** Declared auxiliary request purpose; ordinary conversation requests leave it absent. */
+export type LlmRequestPurpose = Extract<keyof LlmRequestPurposeMap, string>
+
+/**
+ * A single model request, fully assembled.
+ * @typeParam Purpose - declared purpose keys for callers; forwarding adapters may accept `string`.
+ */
+export interface GenerateOptions<Purpose extends string = LlmRequestPurpose> {
   /** Registered provider route selecting the adapter instance. */
   provider: string
   model: string
@@ -593,5 +602,5 @@ export interface GenerateOptions {
    * map the purpose to model-hidden transport metadata. Ordinary conversation
    * requests leave it unset.
    */
-  purpose?: 'compaction' | 'session-title'
+  purpose?: Purpose
 }
diff --git a/packages/llm/plugin-package-inventory-deepseek/package.json b/packages/llm/plugin-package-inventory-deepseek/package.json
index a2e00d7eaa..14fca295a8 100644
--- a/packages/llm/plugin-package-inventory-deepseek/package.json
+++ b/packages/llm/plugin-package-inventory-deepseek/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-plugin-package-inventory-deepseek",
   "description": "Active Loader-backed plugin package inventory for official DeepSeek LLM API requests",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/llm/token-meter/package.json b/packages/llm/token-meter/package.json
index 46e506135d..2236618414 100644
--- a/packages/llm/token-meter/package.json
+++ b/packages/llm/token-meter/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-token-meter",
   "description": "Replay-aware token measurement service (ctx.tokenMeter) for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/lsp/lsp-stdio/package.json b/packages/lsp/lsp-stdio/package.json
index 330aaf9f2a..524d380f5c 100644
--- a/packages/lsp/lsp-stdio/package.json
+++ b/packages/lsp/lsp-stdio/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-lsp-stdio",
   "description": "Generic stdio language-server provider for the DeepSeek Harness LSP capability seam (ctx.lsp) — spawns configured servers, translates JSON-RPC, and serves transient-open goToDefinition/findReferences/goToImplementation/hover queries in the host filesystem namespace",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/lsp/lsp-stdio/tests/provider.spec.ts b/packages/lsp/lsp-stdio/tests/provider.spec.ts
index 4f2ac651ea..f1bc5e0293 100644
--- a/packages/lsp/lsp-stdio/tests/provider.spec.ts
+++ b/packages/lsp/lsp-stdio/tests/provider.spec.ts
@@ -2,7 +2,7 @@ import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { chmod, mkdtemp, mkdir, rm, writeFile, realpath } from 'node:fs/promises'
 import { tmpdir } from 'node:os'
 import { delimiter, join } from 'node:path'
-import { Context } from '@deepseek-ai/cordis'
+import { Context, FiberState } from '@deepseek-ai/cordis'
 import LocalSubprocessRuntime from '@deepseek-ai/dsh-subprocess-local'
 import LocalFileSystem from '@deepseek-ai/dsh-fs-local'
 import Lsp, { type LspQueryRequest } from '@deepseek-ai/dsh-lsp'
@@ -268,7 +268,7 @@ describe('lsp-stdio provider resolution', () => {
     expect(signal.aborted).toBe(false)
     const disposing = loading.dispose()
 
-    await expect(loading).rejects.toThrow('lsp-stdio setup disposed')
+    expect((await loading).state).toBe(FiberState.DISPOSED)
     await expect(disposing).resolves.toBeUndefined()
     expect(signal.aborted).toBe(true)
     await ctx.fiber.dispose()
diff --git a/packages/lsp/lsp/package.json b/packages/lsp/lsp/package.json
index 1a54e0198f..5833a8e2e2 100644
--- a/packages/lsp/lsp/package.json
+++ b/packages/lsp/lsp/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-lsp",
   "description": "Abstract LSP capability seam (ctx.lsp) for the DeepSeek Harness — language-server provider registry keyed by branded id and extension mapping, order-independent per-query selection, normalized definition/references/implementation/hover requests and results, and the LspError taxonomy",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/lsp/tool-lsp/package.json b/packages/lsp/tool-lsp/package.json
index 1ee49aa0a9..d10f15c3bf 100644
--- a/packages/lsp/tool-lsp/package.json
+++ b/packages/lsp/tool-lsp/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-lsp",
   "description": "Model-facing lsp tool over the DeepSeek Harness LSP capability seam (ctx.lsp) \u2014 one read-only tool with goToDefinition/findReferences/goToImplementation/hover operations, one-based UTF-16 cursor coordinates, bounded location rendering, and hover normalization",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/mcp/mcp-client/package.json b/packages/mcp/mcp-client/package.json
index e4004a1533..8248be596c 100644
--- a/packages/mcp/mcp-client/package.json
+++ b/packages/mcp/mcp-client/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-mcp-client",
   "description": "MCP client bridge: connects to MCP servers and registers their tools on ctx.tools",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/mcp/mcp-resources/package.json b/packages/mcp/mcp-resources/package.json
index 3af548b429..ebee9e4eec 100644
--- a/packages/mcp/mcp-resources/package.json
+++ b/packages/mcp/mcp-resources/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-mcp-resources",
   "description": "Scoped MCP resource discovery and reading through shared model tools",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/plan/plan-mode/package.json b/packages/plan/plan-mode/package.json
index 56dde44183..c728d644a4 100644
--- a/packages/plan/plan-mode/package.json
+++ b/packages/plan/plan-mode/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-plan-mode",
   "description": "Logged per-agent plan mode with deployment guidance, a direct slash command, and a user-reviewed exit",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/preset/agent-preset-registry/package.json b/packages/preset/agent-preset-registry/package.json
index c28db0a2e3..242639fdba 100644
--- a/packages/preset/agent-preset-registry/package.json
+++ b/packages/preset/agent-preset-registry/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-agent-preset-registry",
   "description": "Declarative Agent preset registry and profile-backed editing",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/preset/agent-preset-registry/src/mount.ts b/packages/preset/agent-preset-registry/src/mount.ts
index 37eb64a91e..23eec09cdf 100644
--- a/packages/preset/agent-preset-registry/src/mount.ts
+++ b/packages/preset/agent-preset-registry/src/mount.ts
@@ -76,7 +76,7 @@ export function leakedServices(ctx: Context, mount: Fiber): string[] {
        clearing it, so an own symbol always resolves; the guard exists only
        because the store's index signature is optional. */
     if (impl === undefined) continue
-    if (!withinFiber(impl.fiber, mount)) continue
+    if (!withinFiber(impl.ctx.fiber, mount)) continue
     if (rootIsolate[impl.name] === key) leaked.push(impl.name)
   }
   return leaked.sort((left, right) => left.localeCompare(right))
@@ -106,7 +106,7 @@ export function serviceForMount<K extends string & keyof Context>(
     /* v8 ignore next -- cordis deletes a store slot on disposal rather than clearing it */
     if (impl === undefined) continue
     if (impl.name !== name) continue
-    if (withinFiber(impl.fiber, mount.fiber)) return impl.value as Context[K]
+    if (withinFiber(impl.ctx.fiber, mount.fiber)) return impl.value as Context[K]
   }
   return undefined
 }
diff --git a/packages/preset/agent-preset/package.json b/packages/preset/agent-preset/package.json
index 3403af21c8..b64d6a23d8 100644
--- a/packages/preset/agent-preset/package.json
+++ b/packages/preset/agent-preset/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-agent-preset",
   "description": "Declare an Agent capability composition in Cordis YAML",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/preset/agent-preset/skills/cordis-composition-reference/references/packages.md b/packages/preset/agent-preset/skills/cordis-composition-reference/references/packages.md
index 4b984d97ad..335ef455ff 100644
--- a/packages/preset/agent-preset/skills/cordis-composition-reference/references/packages.md
+++ b/packages/preset/agent-preset/skills/cordis-composition-reference/references/packages.md
@@ -73,11 +73,13 @@ Every package below exports a Cordis plugin that a bundle patch can name in a Lo
 | `@deepseek-ai/dsh-client-ui-brand-official` | no | Official DeepSeek Harness brand occupants for the Web client's sidebar slots |
 | `@deepseek-ai/dsh-client-ui-chat` | no | Chat Conversation target, node definitions, renderers, and details surface |
 | `@deepseek-ai/dsh-client-ui-commands` | no | Client command surface: global directory cache, '/' source, three command UI kinds, popupSelect registry |
+| `@deepseek-ai/dsh-client-ui-context-menu` | no | Typed, plugin-extensible context menus with captured targets and shared Web presentation |
 | `@deepseek-ai/dsh-client-ui-conversation` | no | Target-neutral Conversation assembly, shell, composer, queue, and view navigation |
 | `@deepseek-ai/dsh-client-ui-deliverables` | no | Changed-files card with per-file comparison tabs, delivery cards, and clickable final-response file references for Web |
 | `@deepseek-ai/dsh-client-ui-directory-picker-browse` | no | In-app directory browsing surface: the workspace directory-flow owner rendering the host's listing and creation primitives |
 | `@deepseek-ai/dsh-client-ui-directory-picker-native` | no | Native directory-picker surface: the renderless workspace directory-flow occupant driving the local Desktop or Host OS chooser |
 | `@deepseek-ai/dsh-client-ui-entry-customization` | no | Customize plugin entries in the left sidebar, conversation views, and right sidebar, and quickly create new plugins. |
+| `@deepseek-ai/dsh-client-ui-file-actions` | no | Original-file saving and image clipboard actions for Web and Desktop |
 | `@deepseek-ai/dsh-client-ui-file-drag` | no | Application-owned file drag transfers and localized failure feedback |
 | `@deepseek-ai/dsh-client-ui-goal` | no | Session goal surface: GoalBar docked above the composer, read from the goal session projection |
 | `@deepseek-ai/dsh-client-ui-input-trigger` | no | Input trigger pipeline: '/' and '@' detection, candidate menu, pick routing to registered sources |
diff --git a/packages/preset/agent-preset/skills/cordis-plugin-development/references/host-plugin.md b/packages/preset/agent-preset/skills/cordis-plugin-development/references/host-plugin.md
index b2de52dc8e..8bd5040e0a 100644
--- a/packages/preset/agent-preset/skills/cordis-plugin-development/references/host-plugin.md
+++ b/packages/preset/agent-preset/skills/cordis-plugin-development/references/host-plugin.md
@@ -63,6 +63,19 @@ An existing plugin's metadata may remain unchanged when it still describes the r
 
 Register every resource inside `apply` with `ctx.effect` or `ctx.on` and return its cleanup. A plugin that declares `Config` validates the row's `config` at activation; query `Config.listConfigs` for an installed plugin's schema before writing its `config`, and follow `$defs` references in the returned document.
 
+## Persist your own configuration
+
+Plugin code never persists configuration by reading, filtering, and rewriting the active profile's `cordis.patch.yml`, and never locates that file by walking up from the package directory. That file is not your bundle's patch: it belongs to the user and holds other plugins' `insert` rows, comments, and `!!js` expressions. To change its own configuration after `apply` returns, a plugin uses the config editor:
+
+```js
+const entry = ctx.fiber.entry
+const editor = ctx.get('configEditor')
+if (entry === undefined || editor === undefined) throw new Error('Configuration cannot be saved in this profile')
+await editor.edit(entry, current => ({ ...current, field: value }))
+```
+
+`change` returns the row's complete config. The editor keeps the rest of the file, validates the candidate, serializes the write with other profile changes, and rejects values that a higher layer overrides. Report a rejection or a missing editor to the user instead of claiming the value was saved. Editing an ordinary field restarts the plugin so `apply` rebuilds its state; a field declared `.volatile()` updates in place and is read with `config.field.get()`. Store secrets, such as a token from an in-app sign-in or binding flow, as `ctx.credentials.modifyRecord()` records, not configuration; declare `credentials` in `inject` or read it with `ctx.get('credentials')`, and see the `@deepseek-ai/dsh-credentials` README for record keys.
+
 ## Install, enable, and observe
 
 `plugin_manager` `install_bundle` performs package installation and bundle selection; do not reproduce those steps with shell commands. Only pass `approvedBuilds` after the user explicitly approves the reported pending build scripts. Preserve returned failures and pending states; report success only after observing the requested capability.
diff --git a/packages/preset/persona/package.json b/packages/preset/persona/package.json
index b4a89f44fc..f95ca10840 100644
--- a/packages/preset/persona/package.json
+++ b/packages/preset/persona/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-persona",
   "description": "Composition-authored deployment persona section for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/ptc-runtime/ptc-runtime-node/package.json b/packages/ptc-runtime/ptc-runtime-node/package.json
index 7f3d40a0bc..337a30767e 100644
--- a/packages/ptc-runtime/ptc-runtime-node/package.json
+++ b/packages/ptc-runtime/ptc-runtime-node/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-ptc-runtime-node",
   "description": "Node PTC execution with async function, REPL and VM Script evaluators and optional retained state",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/ptc-runtime/ptc-runtime/package.json b/packages/ptc-runtime/ptc-runtime/package.json
index 7457bb30b4..03e31c3ab0 100644
--- a/packages/ptc-runtime/ptc-runtime/package.json
+++ b/packages/ptc-runtime/ptc-runtime/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-ptc-runtime",
   "description": "Abstract PTC execution seam (ctx.ptcRuntime) for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/sandbox/sandbox-local/package.json b/packages/sandbox/sandbox-local/package.json
index bd85ca543e..3ec1389abd 100644
--- a/packages/sandbox/sandbox-local/package.json
+++ b/packages/sandbox/sandbox-local/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sandbox-local",
   "description": "Local process-sandbox backends for the DeepSeek Harness sandbox seam: bwrap, the npm-distributed landlock-run launcher, macOS Seatbelt, or the Windows ACL restricted-token runner — functionally probed, fail-closed",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/sandbox/sandbox-policy/package.json b/packages/sandbox/sandbox-policy/package.json
index 4b76015c3a..d4a29dc419 100644
--- a/packages/sandbox/sandbox-policy/package.json
+++ b/packages/sandbox/sandbox-policy/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sandbox-policy",
   "description": "Per-call sandbox policy resolver and current model context: deployment fallbacks plus each session's mode and workspace root, shared by every enforcing capability family",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/sandbox/sandbox-windows-acl/package.json b/packages/sandbox/sandbox-windows-acl/package.json
index fe18764a2e..897c8d4e22 100644
--- a/packages/sandbox/sandbox-windows-acl/package.json
+++ b/packages/sandbox/sandbox-windows-acl/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sandbox-windows-acl",
   "description": "Windows ACL write-restriction sandbox backend (restricted-token spawn with capability-SID write allowlist) for the DeepSeek Harness sandbox seam",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/sandbox/sandbox/package.json b/packages/sandbox/sandbox/package.json
index b14a9faeb6..3134fe30c9 100644
--- a/packages/sandbox/sandbox/package.json
+++ b/packages/sandbox/sandbox/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sandbox",
   "description": "Abstract process-sandbox seam (ctx.sandbox) for the DeepSeek Harness: same-world confinement vocabulary and the SandboxProvider contract",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/schedule/schedule/package.json b/packages/schedule/schedule/package.json
index 77b477ba32..b3abec82f6 100644
--- a/packages/schedule/schedule/package.json
+++ b/packages/schedule/schedule/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-schedule",
   "description": "Host-wide durable reminders with shared management and original-Session delivery",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/schedule/schedule/tests/recovery.spec.ts b/packages/schedule/schedule/tests/recovery.spec.ts
index ed1c37876c..2b2a8ec142 100644
--- a/packages/schedule/schedule/tests/recovery.spec.ts
+++ b/packages/schedule/schedule/tests/recovery.spec.ts
@@ -267,7 +267,7 @@ it('does not start dispatch when storage opens after its owner begins unloading'
     await settled
     expect(ctx.get('storageDomain') === facility).toBe(true)
     expect(launches()).toBe(0)
-    expect(startupFailure).toContain('cannot create effect on inactive context')
+    expect(startupFailure).toBe('')
     expect(facility.get('schedule')).toBeUndefined()
     expect(vi.getTimerCount()).toBe(0)
     const reopened = await facility.open(scheduleDomain)
diff --git a/packages/schedule/tool-schedule/package.json b/packages/schedule/tool-schedule/package.json
index 5c028fbf4c..2c39374530 100644
--- a/packages/schedule/tool-schedule/package.json
+++ b/packages/schedule/tool-schedule/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-schedule",
   "description": "Model-facing reminder management tools (schedule_create, schedule_list, schedule_update, schedule_delete) over the Host ctx.schedule service",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/sdk/client/package.json b/packages/sdk/client/package.json
index 47fa39f59e..059ae95e73 100644
--- a/packages/sdk/client/package.json
+++ b/packages/sdk/client/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sdk-client",
   "description": "TypeScript client SDK for driving a DeepSeek Harness runtime subprocess over stdio JSON-RPC: the DeepSeekHarness high-level turns API and the lower-level HarnessClient",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/sdk/protocol/package.json b/packages/sdk/protocol/package.json
index cc25d89377..7cb1e0b795 100644
--- a/packages/sdk/protocol/package.json
+++ b/packages/sdk/protocol/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sdk-protocol",
   "description": "Shared wire protocol for the DeepSeek Harness SDK runtime: the newline-delimited JSON-RPC stdio transport and the named request, result, and notification types spoken between the runtime server and SDK clients",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/sdk/server/package.json b/packages/sdk/server/package.json
index a66d5293c2..1d5cf4aa9e 100644
--- a/packages/sdk/server/package.json
+++ b/packages/sdk/server/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sdk-jsonrpc-server",
   "description": "Stdio JSON-RPC server plugin for out-of-process DeepSeek Harness SDK clients",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session-query/session-log-export/package.json b/packages/session-query/session-log-export/package.json
index 57e151eeb5..083b0e2ba7 100644
--- a/packages/session-query/session-log-export/package.json
+++ b/packages/session-query/session-log-export/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-log-export",
   "description": "Web Session-log ZIP export and Session Markdown copy",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session-query/session-log-export/tests/copy-toast.client.spec.tsx b/packages/session-query/session-log-export/tests/copy-toast.client.spec.tsx
index e491848066..8d75eea82b 100644
--- a/packages/session-query/session-log-export/tests/copy-toast.client.spec.tsx
+++ b/packages/session-query/session-log-export/tests/copy-toast.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { act, cleanup, render } from '@testing-library/react'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { useSyncExternalStore } from 'react'
@@ -13,7 +14,7 @@ const unused = (): never => { throw new Error('This isolated component does not
 const standard: GlobalStandardProps = {
   useSessions: unused, useSessionStatus: unused, useSessionRetainInfo: unused,
   useSessionAccess: () => true, useRemoteAccess: () => true, useWorkspaceAccess: () => true,
-  usePanelInfo: unused, useResource: unused, useWorkspaces: unused,
+  usePanelInfo: unused, useContextMenu: contextMenuHook(), useResource: unused, useWorkspaces: unused,
 }
 
 function bindSnapshot(store: ObservableSnapshot<SessionMarkdownCopyState>) {
diff --git a/packages/session-query/session-log-export/tests/header-action.client.spec.tsx b/packages/session-query/session-log-export/tests/header-action.client.spec.tsx
index a8e6321b1a..4a64ffb70d 100644
--- a/packages/session-query/session-log-export/tests/header-action.client.spec.tsx
+++ b/packages/session-query/session-log-export/tests/header-action.client.spec.tsx
@@ -1,4 +1,5 @@
 // @vitest-environment jsdom
+import { contextMenuHook } from '@deepseek-ai/dsh-client-test-runtime'
 import { act, cleanup, fireEvent, render, waitFor } from '@testing-library/react'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { useSyncExternalStore } from 'react'
@@ -25,7 +26,7 @@ const standard: GlobalStandardProps & SessionStandardProps = {
   useSessions: unused, useSessionStatus: unused, useSessionRetainInfo: unused,
   useSessionAccess: () => true, useRemoteAccess: () => true, useWorkspaceAccess: () => true,
   useConversation: unused, useInput: unused, useChat: unused, useTrajectory: unused,
-  usePanelInfo: unused, useResource: unused, useWorkspaces: unused,
+  usePanelInfo: unused, useContextMenu: contextMenuHook(), useResource: unused, useWorkspaces: unused,
   inputActions: { insertQuote: () => false, captureInsertion: unused, insertText: unused, setDraft: unused, persistDraft: unused,
     addAttachments: unused, removeAttachment: unused, pruneAttachments: unused, submit: unused },
 }
diff --git a/packages/session-query/session-query-sqlite/package.json b/packages/session-query/session-query-sqlite/package.json
index 0df38fdbb5..eb67d02ac3 100644
--- a/packages/session-query/session-query-sqlite/package.json
+++ b/packages/session-query/session-query-sqlite/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-query-sqlite",
   "description": "Concrete ctx.sessionQuery backend with SQLite FTS5 search",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session-query/session-query/package.json b/packages/session-query/session-query/package.json
index c2195b7ae6..e733db929f 100644
--- a/packages/session-query/session-query/package.json
+++ b/packages/session-query/session-query/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-query",
   "description": "Combined session query service contract with concrete reads, traces, and filters",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/message-quotes/package.json b/packages/session/message-quotes/package.json
index 1199347dcb..b1f5a2d178 100644
--- a/packages/session/message-quotes/package.json
+++ b/packages/session/message-quotes/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-message-quotes",
   "description": "Selected-text quotation and Markdown blockquote presentation",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-checkpoint-policy/package.json b/packages/session/session-checkpoint-policy/package.json
index 5d1281252e..1c3d8a3067 100644
--- a/packages/session/session-checkpoint-policy/package.json
+++ b/packages/session/session-checkpoint-policy/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-checkpoint-policy",
   "description": "Semantic session durability checkpoints before model requests and tool side effects",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-format-catalog/package.json b/packages/session/session-format-catalog/package.json
index 4b13392d62..fdd1f00981 100644
--- a/packages/session/session-format-catalog/package.json
+++ b/packages/session/session-format-catalog/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-format-catalog",
   "description": "Build-static first-party Session format codec and migration catalog",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-format-v0-to-v1/package.json b/packages/session/session-format-v0-to-v1/package.json
index 393408349a..c65b067022 100644
--- a/packages/session/session-format-v0-to-v1/package.json
+++ b/packages/session/session-format-v0-to-v1/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-format-v0-to-v1",
   "description": "Frozen released-v0 Session codec and identity migration to v1",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-format-v1-to-v2/package.json b/packages/session/session-format-v1-to-v2/package.json
index 7979a99eff..2787b52456 100644
--- a/packages/session/session-format-v1-to-v2/package.json
+++ b/packages/session/session-format-v1-to-v2/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-format-v1-to-v2",
   "description": "Frozen released-v1 Session codec and assistant-stream migration to v2",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-format-v2-to-v3/package.json b/packages/session/session-format-v2-to-v3/package.json
index 4114c3e4d0..84e3103972 100644
--- a/packages/session/session-format-v2-to-v3/package.json
+++ b/packages/session/session-format-v2-to-v3/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-format-v2-to-v3",
   "description": "Streaming system-prompt, canonical-envelope and PTC migration into V3",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-format-v3-to-v4/package.json b/packages/session/session-format-v3-to-v4/package.json
index c233ddc03b..56452e0c70 100644
--- a/packages/session/session-format-v3-to-v4/package.json
+++ b/packages/session/session-format-v3-to-v4/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-format-v3-to-v4",
   "description": "Streaming tool-role migration and delivery validation from Session V3 to V4",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-format/package.json b/packages/session/session-format/package.json
index 6cc49b9cf6..f76444ebc0 100644
--- a/packages/session/session-format/package.json
+++ b/packages/session/session-format/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-format",
   "description": "Streaming adjacent Session format migration machinery",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-log-deepseek/README.i18n.yaml b/packages/session/session-log-deepseek/README.i18n.yaml
index 250ea59464..3fec12ee52 100644
--- a/packages/session/session-log-deepseek/README.i18n.yaml
+++ b/packages/session/session-log-deepseek/README.i18n.yaml
@@ -12,17 +12,20 @@
   en: 19c182dbd7d8e064
   zh: 51c043d6ea52db0d
 /deepseek-ai-dsh-session-log-deepseek/table-of-contents:
-  en: e2aa29e41bc101c4
-  zh: 2ef629f2a444bc13
+  en: eb945093933ee19b
+  zh: 7a40fe2e98a491c5
 /deepseek-ai-dsh-session-log-deepseek/configuration:
   en: 1b899e63d8039643
   zh: d489461bbb618b5d
 /deepseek-ai-dsh-session-log-deepseek/request-field:
-  en: 65795dc44af4b15e
-  zh: 849c7d57f16f66af
+  en: f11095717a9aec6f
+  zh: fb872499eea955be
+/deepseek-ai-dsh-session-log-deepseek/upload-exclusions:
+  en: 9d303e05a05a8737
+  zh: 8b12d1e7a2d04060
 /deepseek-ai-dsh-session-log-deepseek/acceptance-and-retry:
-  en: 3688592c474b3e95
-  zh: 5e83afeb9aa9e9e3
+  en: 6997969916bb1b42
+  zh: 929fd0485278ff8b
 /deepseek-ai-dsh-session-log-deepseek/model-experience:
   en: 215e7ba838619b7b
   zh: a311da3843709f90
diff --git a/packages/session/session-log-deepseek/README.md b/packages/session/session-log-deepseek/README.md
index 7fa83ee205..f686732ba9 100644
--- a/packages/session/session-log-deepseek/README.md
+++ b/packages/session/session-log-deepseek/README.md
@@ -15,6 +15,7 @@ Incremental canonical session-log upload for official DeepSeek LLM API requests.
 
 - [Configuration](#configuration)
 - [Request field](#request-field)
+- [Upload exclusions](#upload-exclusions)
 - [Acceptance and retry](#acceptance-and-retry)
 - [Model Experience](#model-experience)
 - [Known Limitations and Deferred Work](#known-limitations-and-deferred-work)
@@ -41,6 +42,24 @@ For a request carrying a live `sessionId`, the plugin folds the greatest accepte
 
 `maxBytes` bounds the complete serialized field in UTF-8 bytes, including the header and numeric envelope fields. A backlog above the limit drains across consecutive accepted requests, each continuing after the previous `throughSeq`. When the first pending event alone exceeds the limit, the request omits `dsh_session_log`, the plugin logs one warning per blocking event, and the watermark stays before that event until `maxBytes` admits it. An event too large for the runtime to serialize at all is handled the same way, and no `maxBytes` value admits it.
 
+<a id="upload-exclusions"></a>
+## Upload exclusions
+
+Plugins can register synchronous, side-effect-free predicates with `ctx.sessionLogDeepSeek.registerExclusion()`. A predicate receives the live `sessionId` and optional request `purpose`; `true` skips this request's log field and acceptance callback. Any matching predicate excludes the upload. With no matching predicates, normal eligibility applies. A throwing predicate omits this log contribution, and the request-extension registry reports its first preparation failure; the model request continues with other prepared fields.
+
+```ts
+import type { Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/dsh-session-log-deepseek'
+
+export function apply(ctx: Context): void {
+  ctx.inject(['sessionLogDeepSeek'], (child) => {
+    child.sessionLogDeepSeek.registerExclusion(request => request.purpose === 'private-operation')
+  })
+}
+```
+
+Registration belongs to the calling plugin and returns an effect disposer. Disposing that registration or unloading its caller removes only that rule. Exclusions run before reading the Session log; other request extensions remain eligible. Prepared in-flight contributions retain their payload and acceptance callback.
+
 <a id="acceptance-and-retry"></a>
 ## Acceptance and retry
 
@@ -48,7 +67,7 @@ The DeepSeek adapter calls the prepared contribution's `accept()` after HTTP 2xx
 
 A crash after server acceptance but before the watermark reaches persistence can replay an accepted range after restart. This is the at-least-once failure direction: uncertainty creates duplicates, never a skipped sequence. The ordinary session checkpoint policy persists the watermark at the next semantic checkpoint; this plugin performs no independent I/O.
 
-Direct requests without a live Session omit `dsh_session_log`. Normal agent, compaction, and session-title calls carry their live Session id.
+Direct requests without a live Session omit `dsh_session_log`. Normal agent, compaction, session-title, and Auto review calls carry their live Session id and use the same upload eligibility.
 
 <a id="model-experience"></a>
 ## Model Experience
diff --git a/packages/session/session-log-deepseek/README.zh.md b/packages/session/session-log-deepseek/README.zh.md
index f5c8c847f2..a87e6b5dfd 100644
--- a/packages/session/session-log-deepseek/README.zh.md
+++ b/packages/session/session-log-deepseek/README.zh.md
@@ -15,6 +15,7 @@ kind: "package-reference"
 
 - [配置](#configuration)
 - [请求字段](#request-field)
+- [上传排除条件](#upload-exclusions)
 - [接受与重试](#acceptance-and-retry)
 - [模型体验](#model-experience)
 - [已知限制与暂缓事项](#known-limitations-and-deferred-work)
@@ -41,6 +42,24 @@ Web **设置 → 通用 → 在使用官方模型 API 时上传 Session Log** 
 
 `maxBytes` 按 UTF-8 字节限制完整的序列化字段，包括 header 与数值型 envelope 字段。超过上限的积压会分多次已接受的请求补传，每次都从上一次的 `throughSeq` 之后继续。第一条待发事件本身就超过上限时，请求会省略 `dsh_session_log`，插件对每个阻塞事件只记录一次告警，水位停在该事件之前，直到 `maxBytes` 能容纳它。运行时根本无法序列化的超大事件也按同样方式处理，且任何 `maxBytes` 都无法容纳它。
 
+<a id="upload-exclusions"></a>
+## 上传排除条件
+
+插件可通过 `ctx.sessionLogDeepSeek.registerExclusion()` 注册同步、无副作用的判断函数。函数接收存活的 `sessionId` 与可选请求用途 `purpose`；返回 `true` 时，省略本次请求的日志字段与接受回调。任意条件匹配都会排除上传。没有条件匹配时，应用普通上传资格判断。条件抛错时省略本次日志贡献，请求扩展注册器报告首次准备失败；模型请求继续携带其他已准备字段。
+
+```ts
+import type { Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/dsh-session-log-deepseek'
+
+export function apply(ctx: Context): void {
+  ctx.inject(['sessionLogDeepSeek'], (child) => {
+    child.sessionLogDeepSeek.registerExclusion(request => request.purpose === 'private-operation')
+  })
+}
+```
+
+注册归调用方插件所有，并返回 effect 释放函数。释放该注册或卸载调用方时，只移除对应规则。排除条件在读取 Session 日志前执行；其他请求扩展仍可参与。已经准备好的在途贡献保留其载荷与接受回调。
+
 <a id="acceptance-and-retry"></a>
 ## 接受与重试
 
@@ -48,7 +67,7 @@ DeepSeek 适配器会在 HTTP 2xx 后、消费 SSE（Server-Sent Events）正文
 
 服务端接受后、持久化水位前发生崩溃，可能让恢复后的进程重放已经接受的范围。这是至少一次交付的失败方向：不确定性会制造重复，绝不会跳过序列。普通会话检查点策略会在下一个语义检查点持久化水位；本插件不执行独立 I/O。
 
-缺少存活会话的直接请求会省略 `dsh_session_log`。普通 agent（智能体）、压缩（compaction）与会话标题调用都会携带存活会话 id。
+缺少存活会话的直接请求会省略 `dsh_session_log`。普通 agent（智能体）、压缩（compaction）、会话标题与 Auto 审查调用都会携带存活会话 id，并应用相同的上传资格判断。
 
 <a id="model-experience"></a>
 ## 模型体验
diff --git a/packages/session/session-log-deepseek/package.json b/packages/session/session-log-deepseek/package.json
index fde9f4cca8..0645eb648d 100644
--- a/packages/session/session-log-deepseek/package.json
+++ b/packages/session/session-log-deepseek/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-log-deepseek",
   "description": "Incremental lossless session-log request extension for the official DeepSeek LLM API",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-log-deepseek/src/index.ts b/packages/session/session-log-deepseek/src/index.ts
index 0f197bc3f5..20d5dcf138 100644
--- a/packages/session/session-log-deepseek/src/index.ts
+++ b/packages/session/session-log-deepseek/src/index.ts
@@ -6,7 +6,7 @@
  */
 
 import { Buffer } from 'node:buffer'
-import type { Context, Volatile } from '@deepseek-ai/cordis'
+import { Service, type Context, type Volatile } from '@deepseek-ai/cordis'
 import z from '@deepseek-ai/schemastery'
 import { brandString } from '@deepseek-ai/dsh-brand'
 import type {} from '@deepseek-ai/dsh-deepseek-llm-api-extensions'
@@ -26,10 +26,18 @@ import type {
   DeepSeekSessionLogWireEvent,
   DeepSeekSessionLogWireHeader,
   DeepSeekSessionLogWireSurfaceOp,
+  SessionLogUploadExclusion,
+  SessionLogUploadRequest,
 } from './types.ts'
 
 export type * from './types.ts'
 
+declare module '@deepseek-ai/cordis' {
+  interface Context {
+    sessionLogDeepSeek: SessionLogDeepSeekService
+  }
+}
+
 /** Cordis plugin name. */
 export const name = 'session-log-deepseek'
 /** Services required to resolve sessions and contribute the provider request field. */
@@ -176,72 +184,108 @@ export function acceptedThrough(session: Session): SessionSeqCursor {
   return throughSeq
 }
 
+/** Incremental Session-log contributor with caller-owned upload exclusions. */
+export class SessionLogDeepSeekService extends Service {
+  static inject = inject
+
+  private readonly exclusions = new Set<{ readonly exclude: SessionLogUploadExclusion }>()
+
+  constructor(ctx: Context, config: Config) {
+    super(ctx, 'sessionLogDeepSeek')
+    const { maxBytes } = config
+    ctx.deepseekLlmApiExtensions.register('dsh_session_log', {
+      prepare: (request) => {
+        if (!config.enabled.get()) return undefined
+        // TODO: Define an explicit wire result for direct or stale-session calls if they become a supported product path.
+        if (request.sessionId === undefined) return undefined
+        const session = ctx.sessions.get(brandString<SessionId>(request.sessionId))
+        if (session === undefined) return undefined
+        const upload: SessionLogUploadRequest = {
+          sessionId: session.id,
+          ...request.purpose === undefined ? {} : { purpose: request.purpose },
+        }
+        for (const { exclude } of this.exclusions) {
+          if (exclude(upload)) return undefined
+        }
+
+        const afterSeq = acceptedThrough(session)
+        // oxlint-disable-next-line typescript/no-deprecated -- Existing Session history read; migration deferred.
+        const pending = session.snapshotEvents(SessionLogOffset(afterSeq + 1))
+        const envelope = {
+          version: 1,
+          sessionFormatVersion: session.header.version,
+          session: wireHeader(session),
+          afterSeq: Number(afterSeq),
+        } as const
+        // Field bytes without events or throughSeq digits; each candidate prefix adds its own.
+        let bytes = jsonBytes({ ...envelope, throughSeq: 0, events: [] }) - 1
+        const events: DeepSeekSessionLogWireEvent[] = []
+        // Field bytes with the last examined event; when none fits, the first event's own field size.
+        let candidateBytes = 0
+        for (const event of pending) {
+          const wire = wireEvent(event)
+          const next = bytes + (events.length === 0 ? 0 : 1) + jsonBytes(wire)
+          candidateBytes = next + String(event.seq).length
+          if (candidateBytes > maxBytes) break
+          bytes = next
+          events.push(wire)
+        }
+        const last = events.length === 0 ? undefined : pending[events.length - 1]
+        if (last === undefined) {
+          const first = pending[0]
+          if (first !== undefined && blockedWarnings.get(session) !== first.seq) {
+            blockedWarnings.set(session, first.seq)
+            const seq = String(first.seq)
+            ctx.logger.warn(Number.isFinite(candidateBytes)
+              ? `session-log-deepseek: event ${seq} of session "${session.id}" needs a ${String(candidateBytes)}-byte`
+                + ` dsh_session_log field, above maxBytes ${String(maxBytes)}; this session's upload stays at event ${seq}`
+                + ' until maxBytes admits it'
+              : `session-log-deepseek: event ${seq} of session "${session.id}" is too large to serialize into a dsh_session_log field;`
+                + ` this session's upload stays at event ${seq}`)
+          }
+          return undefined
+        }
+        const throughSeq = last.seq
+        const value: DeepSeekSessionLogExtension = { ...envelope, throughSeq: Number(throughSeq), events }
+        return {
+          value,
+          accept: () => {
+            session.append('session-log-deepseek/delivery-accepted', {
+              sessionId: session.id,
+              sessionFormatVersion: session.header.version,
+              throughSeq,
+            })
+            // TODO: Add an immediate lightweight checkpoint if duplicate replay after a 2xx crash window becomes unacceptable.
+          },
+        }
+      },
+    })
+  }
+
+  /**
+   * Exclude matching requests before reading or preparing their log contribution.
+   * Any matching rule suppresses both the field and its acceptance callback. With
+   * no matching rules, normal upload eligibility applies. A throwing rule fails
+   * this contribution; the request-extension registry omits it and reports the error.
+   * @param exclude - synchronous, side-effect-free predicate; `true` skips this upload.
+   * @returns effect disposer that removes this registration when called or when the caller unloads.
+   */
+  registerExclusion(exclude: SessionLogUploadExclusion): () => Promise<void> {
+    const entry = { exclude }
+    const exclusions = this.exclusions
+    return this.ctx.effect(() => {
+      exclusions.add(entry)
+      return () => { exclusions.delete(entry) }
+    }, 'sessionLogDeepSeek.registerExclusion()')
+  }
+}
+
 /**
  * Register the incremental request contribution; enablement is read for each request.
  * @param ctx - plugin context carrying Sessions and the DeepSeek request-extension registry.
  * @param config - validated configuration.
+ * @returns fulfillment after the upload service is mounted.
  */
-export function apply(ctx: Context, config: Config): void {
-  // Schemastery validates and fills the defaults before `apply` runs.
-  const { maxBytes } = config
-  ctx.deepseekLlmApiExtensions.register('dsh_session_log', {
-    prepare: (request) => {
-      if (!config.enabled.get()) return undefined
-      // TODO: Define an explicit wire result for direct or stale-session calls if they become a supported product path.
-      if (request.sessionId === undefined) return undefined
-      const session = ctx.sessions.get(brandString<SessionId>(request.sessionId))
-      if (session === undefined) return undefined
-
-      const afterSeq = acceptedThrough(session)
-      // oxlint-disable-next-line typescript/no-deprecated -- Existing Session history read; migration deferred.
-      const pending = session.snapshotEvents(SessionLogOffset(afterSeq + 1))
-      const envelope = {
-        version: 1,
-        sessionFormatVersion: session.header.version,
-        session: wireHeader(session),
-        afterSeq: Number(afterSeq),
-      } as const
-      // Field bytes without events or throughSeq digits; each candidate prefix adds its own.
-      let bytes = jsonBytes({ ...envelope, throughSeq: 0, events: [] }) - 1
-      const events: DeepSeekSessionLogWireEvent[] = []
-      // Field bytes with the last examined event; when none fits, the first event's own field size.
-      let candidateBytes = 0
-      for (const event of pending) {
-        const wire = wireEvent(event)
-        const next = bytes + (events.length === 0 ? 0 : 1) + jsonBytes(wire)
-        candidateBytes = next + String(event.seq).length
-        if (candidateBytes > maxBytes) break
-        bytes = next
-        events.push(wire)
-      }
-      const last = events.length === 0 ? undefined : pending[events.length - 1]
-      if (last === undefined) {
-        const first = pending[0]
-        if (first !== undefined && blockedWarnings.get(session) !== first.seq) {
-          blockedWarnings.set(session, first.seq)
-          const seq = String(first.seq)
-          ctx.logger.warn(Number.isFinite(candidateBytes)
-            ? `session-log-deepseek: event ${seq} of session "${session.id}" needs a ${String(candidateBytes)}-byte`
-              + ` dsh_session_log field, above maxBytes ${String(maxBytes)}; this session's upload stays at event ${seq}`
-              + ' until maxBytes admits it'
-            : `session-log-deepseek: event ${seq} of session "${session.id}" is too large to serialize into a dsh_session_log field;`
-              + ` this session's upload stays at event ${seq}`)
-        }
-        return undefined
-      }
-      const throughSeq = last.seq
-      const value: DeepSeekSessionLogExtension = { ...envelope, throughSeq: Number(throughSeq), events }
-      return {
-        value,
-        accept: () => {
-          session.append('session-log-deepseek/delivery-accepted', {
-            sessionId: session.id,
-            sessionFormatVersion: session.header.version,
-            throughSeq,
-          })
-          // TODO: Add an immediate lightweight checkpoint if duplicate replay after a 2xx crash window becomes unacceptable.
-        },
-      }
-    },
-  })
+export async function apply(ctx: Context, config: Config): Promise<void> {
+  await ctx.plugin(SessionLogDeepSeekService, config)
 }
diff --git a/packages/session/session-log-deepseek/src/types.ts b/packages/session/session-log-deepseek/src/types.ts
index 4201c51f99..13561cfe0d 100644
--- a/packages/session/session-log-deepseek/src/types.ts
+++ b/packages/session/session-log-deepseek/src/types.ts
@@ -1,8 +1,23 @@
 /** Wire types for lossless incremental DeepSeek session-log upload. */
 
-import type { SessionEvent, SurfaceEventType } from '@deepseek-ai/dsh-session'
+import type { SessionEvent, SessionId, SurfaceEventType } from '@deepseek-ai/dsh-session'
 import type { JsonValue } from '@deepseek-ai/dsh-util-values'
 
+/** Request identity inspected before preparing a Session-log contribution. */
+export interface SessionLogUploadRequest {
+  /** Live Session whose canonical log would be contributed. */
+  readonly sessionId: SessionId
+  /** Auxiliary request classification; absent for ordinary conversation requests. */
+  readonly purpose?: string
+}
+
+/**
+ * Synchronous, side-effect-free upload exclusion owned by its registering plugin.
+ * @param request - request identity; the predicate must not mutate it.
+ * @returns `true` to omit the log field and acceptance callback, or `false` to keep checking eligibility.
+ */
+export type SessionLogUploadExclusion = (request: SessionLogUploadRequest) => boolean
+
 /** Session header fields serialized as raw JSON primitives on the external request wire. */
 export interface DeepSeekSessionLogWireHeader {
   readonly version: number
diff --git a/packages/session/session-log-deepseek/tests/upload.spec.ts b/packages/session/session-log-deepseek/tests/upload.spec.ts
index e7f026e7e6..b52b038fd9 100644
--- a/packages/session/session-log-deepseek/tests/upload.spec.ts
+++ b/packages/session/session-log-deepseek/tests/upload.spec.ts
@@ -404,6 +404,112 @@ describe('incremental DeepSeek session-log upload', () => {
     })
   })
 
+  it.each([undefined, 'compaction', 'session-title', 'auto-review'])(
+    'uploads and acknowledges eligible requests with purpose %s by default', async (purpose) => {
+      const { ctx, session } = await harness('default-upload')
+      session.append('turn/start', { turn: 1 })
+      const prepared = await ctx.deepseekLlmApiExtensions.prepare({
+        body: body(), signal: SIGNAL, sessionId: session.id, ...purpose === undefined ? {} : { purpose },
+      })
+      expect(prepared.fields.dsh_session_log).toMatchObject({ afterSeq: -1, throughSeq: 0 })
+      await prepared.accept()
+      expect(SessionLogDeepSeek.acceptedThrough(session)).toBe(0)
+      expect(session.snapshotEvents().at(-1)?.type).toBe('session-log-deepseek/delivery-accepted')
+    },
+  )
+
+  it.each([false, true])('omits a matching upload independently of registration order (%s)', async (reverse) => {
+    const { ctx, session } = await harness('excluded-upload')
+    session.append('turn/start', { turn: 1 })
+    const rules = [
+      () => false,
+      (request: import('../src/types.ts').SessionLogUploadRequest) => request.purpose === 'private-operation',
+    ]
+    const consumer = ctx.inject(['sessionLogDeepSeek'], (child) => {
+      for (const rule of reverse ? rules.toReversed() : rules) child.sessionLogDeepSeek.registerExclusion(rule)
+    })
+    await consumer
+    const excluded = await ctx.deepseekLlmApiExtensions.prepare({
+      body: body(), signal: SIGNAL, sessionId: session.id, purpose: 'private-operation',
+    })
+    expect(excluded.fields).not.toHaveProperty('dsh_session_log')
+    await excluded.accept()
+    expect(SessionLogDeepSeek.acceptedThrough(session)).toBe(-1)
+    expect(session.snapshotEvents()).toHaveLength(1)
+
+    const ordinary = await ctx.deepseekLlmApiExtensions.prepare({ body: body(), signal: SIGNAL, sessionId: session.id })
+    expect(ordinary.fields.dsh_session_log).toMatchObject({ afterSeq: -1, throughSeq: 0 })
+    await consumer.dispose()
+    const restored = await ctx.deepseekLlmApiExtensions.prepare({
+      body: body(), signal: SIGNAL, sessionId: session.id, purpose: 'private-operation',
+    })
+    expect(restored.fields.dsh_session_log).toMatchObject({ afterSeq: -1, throughSeq: 0 })
+    await restored.accept()
+    expect(SessionLogDeepSeek.acceptedThrough(session)).toBe(0)
+  })
+
+  it('owns duplicate predicates as separate disposable registrations', async () => {
+    const { ctx, session } = await harness('duplicate-exclusion')
+    session.append('turn/start', { turn: 1 })
+    const rule = () => true
+    const first = ctx.sessionLogDeepSeek.registerExclusion(rule)
+    const second = ctx.sessionLogDeepSeek.registerExclusion(rule)
+    await first()
+    const retained = await ctx.deepseekLlmApiExtensions.prepare({ body: body(), signal: SIGNAL, sessionId: session.id })
+    expect(retained.fields).not.toHaveProperty('dsh_session_log')
+    await second()
+    const restored = await ctx.deepseekLlmApiExtensions.prepare({ body: body(), signal: SIGNAL, sessionId: session.id })
+    expect(restored.fields.dsh_session_log).toMatchObject({ afterSeq: -1, throughSeq: 0 })
+  })
+
+  it('reports a throwing exclusion and omits its log contribution without acknowledgement', async () => {
+    const { ctx, session } = await harness('failed-exclusion')
+    session.append('turn/start', { turn: 1 })
+    const failure = new Error('upload exclusion failed')
+    const warnings: unknown[][] = []
+    ctx.logger.exporter({ levels: { default: LoggerLevel.WARN }, export: (message) => { if (message.type === 'warn') warnings.push(message.args) } })
+    const dispose = ctx.sessionLogDeepSeek.registerExclusion(() => { throw failure })
+    const prepared = await ctx.deepseekLlmApiExtensions.prepare({ body: body(), signal: SIGNAL, sessionId: session.id })
+    expect(prepared.fields).not.toHaveProperty('dsh_session_log')
+    await prepared.accept()
+    expect(SessionLogDeepSeek.acceptedThrough(session)).toBe(-1)
+    expect(session.snapshotEvents()).toHaveLength(1)
+    expect(warnings).toEqual([[expect.stringContaining('omitting field "dsh_session_log"'), failure]])
+    await dispose()
+    const restored = await ctx.deepseekLlmApiExtensions.prepare({ body: body(), signal: SIGNAL, sessionId: session.id })
+    expect(restored.fields.dsh_session_log).toMatchObject({ afterSeq: -1, throughSeq: 0 })
+  })
+
+  it('rebinds caller exclusions after the upload service is replaced', async () => {
+    const { ctx, session, disposeUpload } = await harness('replacement-exclusion')
+    session.append('turn/start', { turn: 1 })
+    const consumer = ctx.inject(['sessionLogDeepSeek'], (child) => {
+      child.sessionLogDeepSeek.registerExclusion(request => request.sessionId === session.id)
+    })
+    await consumer
+    const prepare = () => ctx.deepseekLlmApiExtensions.prepare({ body: body(), signal: SIGNAL, sessionId: session.id })
+    expect((await prepare()).fields).not.toHaveProperty('dsh_session_log')
+    await disposeUpload()
+    expect(ctx.get('sessionLogDeepSeek')).toBeUndefined()
+    await ctx.plugin(SessionLogDeepSeek, { enabled: true })
+    await consumer
+    expect((await prepare()).fields).not.toHaveProperty('dsh_session_log')
+    await consumer.dispose()
+    expect((await prepare()).fields).toHaveProperty('dsh_session_log')
+  })
+
+  it('keeps prepared contributions valid when an exclusion is registered later', async () => {
+    const { ctx, session } = await harness('prepared-exclusion')
+    session.append('turn/start', { turn: 1 })
+    const prepared = await ctx.deepseekLlmApiExtensions.prepare({ body: body(), signal: SIGNAL, sessionId: session.id })
+    ctx.sessionLogDeepSeek.registerExclusion(() => true)
+    expect(prepared.fields).toHaveProperty('dsh_session_log')
+    await prepared.accept()
+    expect(SessionLogDeepSeek.acceptedThrough(session)).toBe(0)
+    const next = await ctx.deepseekLlmApiExtensions.prepare({ body: body(), signal: SIGNAL, sessionId: session.id })
+    expect(next.fields).not.toHaveProperty('dsh_session_log')
+  })
+
   it('contributes complete events without reading request messages', async () => {
     const { ctx, session } = await harness('direct-events')
     session.append('turn/start', { turn: 1 })
diff --git a/packages/session/session-persistence-jsonl/package.json b/packages/session/session-persistence-jsonl/package.json
index 8a7d633b33..df1d7d1dce 100644
--- a/packages/session/session-persistence-jsonl/package.json
+++ b/packages/session/session-persistence-jsonl/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-persistence-jsonl",
   "description": "JSONL durable session persistence backend for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-persistence/package.json b/packages/session/session-persistence/package.json
index 6dcc9f09ae..736f378099 100644
--- a/packages/session/session-persistence/package.json
+++ b/packages/session/session-persistence/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-persistence",
   "description": "Abstract durable session persistence seam (ctx.sessionPersistence) for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-projection-cache/package.json b/packages/session/session-projection-cache/package.json
index 1080888a81..4038705537 100644
--- a/packages/session/session-projection-cache/package.json
+++ b/packages/session/session-projection-cache/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-projection-cache",
   "description": "Persisted projection cache (ctx.sessionProjectionCache): durable per-session checkpoint records on the session_projcache storage domain (per-record layout), throttled write-behind, and the cached listing read",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-projection/package.json b/packages/session/session-projection/package.json
index ecf1f033eb..3984d842b5 100644
--- a/packages/session/session-projection/package.json
+++ b/packages/session/session-projection/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-projection",
   "description": "Session-projection seam: the merge-extensible projection type table, the provider contract, and the ctx.sessionProjections registry serving whole current values of log-derived per-session state",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-stats/package.json b/packages/session/session-stats/package.json
index 28f14865f4..c2b63fbc34 100644
--- a/packages/session/session-stats/package.json
+++ b/packages/session/session-stats/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-stats",
   "description": "Whole-log conversation counts and wall times projection (sessionStats) for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-telemetry-otel/package.json b/packages/session/session-telemetry-otel/package.json
index 1e77434d86..92d732854c 100644
--- a/packages/session/session-telemetry-otel/package.json
+++ b/packages/session/session-telemetry-otel/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-telemetry-otel",
   "description": "Feedback-authorized Session logs over byte-bounded OpenTelemetry HTTP requests",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-telemetry/package.json b/packages/session/session-telemetry/package.json
index b174059e7e..a64c39a01b 100644
--- a/packages/session/session-telemetry/package.json
+++ b/packages/session/session-telemetry/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-telemetry",
   "description": "SessionTelemetryBackend seam for the DeepSeek Harness: session-event capture, projection, redaction, and handoff to a reporting backend",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-title-first-prompt-llm/package.json b/packages/session/session-title-first-prompt-llm/package.json
index 9a285d93d3..333e584b88 100644
--- a/packages/session/session-title-first-prompt-llm/package.json
+++ b/packages/session/session-title-first-prompt-llm/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-title-first-prompt-llm",
   "description": "First-message LLM provider plugin for DeepSeek Harness session titles",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-title-llm/README.i18n.yaml b/packages/session/session-title-llm/README.i18n.yaml
index 0a02981f01..3c179c438b 100644
--- a/packages/session/session-title-llm/README.i18n.yaml
+++ b/packages/session/session-title-llm/README.i18n.yaml
@@ -36,8 +36,8 @@
   en: ee1ac7a50e65d430
   zh: 2c97dd5cc71e8f22
 /deepseek-ai-dsh-session-title-llm/understand-the-implementation/request-flow:
-  en: b3f23a8c2c8b38e3
-  zh: de612ea07796fe9d
+  en: 6b9d2ce3eaf13d3d
+  zh: 1a5fa6d1165e6b23
 /deepseek-ai-dsh-session-title-llm/further-exploration:
   en: d9844c0fc3e16c5c
   zh: 1e0c0b4b5d566972
diff --git a/packages/session/session-title-llm/README.md b/packages/session/session-title-llm/README.md
index 8ea85bbe1c..22a31a8147 100644
--- a/packages/session/session-title-llm/README.md
+++ b/packages/session/session-title-llm/README.md
@@ -72,7 +72,7 @@ One small shared execution policy so operational behavior cannot drift: executio
 
 ### Request flow
 
-The caller builds the prepared input and frames it; the function checks the complete input against `maxInputBytes`. The provider's reasoning selector chooses at most one effort during `ctx.llm.prepareCall()`. The function records the exact input, output cap, and resolved effort in `session/title-llm-request`, then dispatches through the same captured adapter generation under the shared deadline. `purpose: 'session-title'` supplies attribution only. The request has no agent-loop identity and does not enter conversation history. Generation failures preserve the request record.
+The caller builds the prepared input and frames it; the function checks the complete input against `maxInputBytes`. The provider's reasoning selector chooses at most one effort during `ctx.llm.prepareCall()`. The function records the exact input, output cap, and resolved effort in `session/title-llm-request`, then dispatches through the same captured adapter generation under the shared deadline. `purpose: 'session-title'` supplies attribution only. The request has no agent-loop identity and does not enter conversation history. Generation failures preserve the request record. The package declares `session-title` in `LlmRequestPurposeMap`; importing its public entry loads that declaration.
 
 </details>
 
diff --git a/packages/session/session-title-llm/README.zh.md b/packages/session/session-title-llm/README.zh.md
index 5b2b714a92..8ff187665a 100644
--- a/packages/session/session-title-llm/README.zh.md
+++ b/packages/session/session-title-llm/README.zh.md
@@ -72,7 +72,7 @@ kind: "package-library"
 
 ### 请求流程
 
-调用方构建准备好的输入并进行封装；函数依据 `maxInputBytes` 检查完整输入。提供方的推理选择器在 `ctx.llm.prepareCall()` 期间最多选择一个强度。函数把确切输入、输出上限与解析后的强度记录到 `session/title-llm-request`，然后在共享截止时间内通过同一捕获的适配器代次分发。`purpose: 'session-title'` 仅提供归属标注。请求不带 agent loop 身份，也不进入对话历史。生成失败仍保留请求记录。
+调用方构建准备好的输入并进行封装；函数依据 `maxInputBytes` 检查完整输入。提供方的推理选择器在 `ctx.llm.prepareCall()` 期间最多选择一个强度。函数把确切输入、输出上限与解析后的强度记录到 `session/title-llm-request`，然后在共享截止时间内通过同一捕获的适配器代次分发。`purpose: 'session-title'` 仅提供归属标注。请求不带 agent loop 身份，也不进入对话历史。生成失败仍保留请求记录。 本包在 `LlmRequestPurposeMap` 中声明 `session-title`；导入其公开入口即可加载该声明。
 
 </details>
 
diff --git a/packages/session/session-title-llm/package.json b/packages/session/session-title-llm/package.json
index 6ac960b88f..dd599b8e99 100644
--- a/packages/session/session-title-llm/package.json
+++ b/packages/session/session-title-llm/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-title-llm",
   "description": "Shared LLM generation policy for DeepSeek Harness session-title providers",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-title-llm/src/index.ts b/packages/session/session-title-llm/src/index.ts
index e89962d7c7..0e09938fe3 100644
--- a/packages/session/session-title-llm/src/index.ts
+++ b/packages/session/session-title-llm/src/index.ts
@@ -6,6 +6,12 @@
  * @module @deepseek-ai/dsh-session-title-llm
  */
 
+declare module '@deepseek-ai/dsh-llm/types' {
+  interface LlmRequestPurposeMap {
+    'session-title': true
+  }
+}
+
 import type { Context } from '@deepseek-ai/cordis'
 import z from '@deepseek-ai/schemastery'
 import { createUserMessage, BlockAssembler } from '@deepseek-ai/dsh-llm'
diff --git a/packages/session/session-title/package.json b/packages/session/session-title/package.json
index d7c551c3a5..a9819c22f0 100644
--- a/packages/session/session-title/package.json
+++ b/packages/session/session-title/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-title",
   "description": "Log-backed session title service and provider registry for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/session-turn-outline/package.json b/packages/session/session-turn-outline/package.json
index 9b54dbe97f..e6445c6ca2 100644
--- a/packages/session/session-turn-outline/package.json
+++ b/packages/session/session-turn-outline/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-turn-outline",
   "description": "Whole-log turn outline projection (turnOutline) for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/tool-working-directory/package.json b/packages/session/tool-working-directory/package.json
index bf98257c8d..369bae67a9 100644
--- a/packages/session/tool-working-directory/package.json
+++ b/packages/session/tool-working-directory/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-working-directory",
   "description": "Read and change the active Session working directory",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/session/working-directory/package.json b/packages/session/working-directory/package.json
index 8c5367d1d3..fd276c8930 100644
--- a/packages/session/working-directory/package.json
+++ b/packages/session/working-directory/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-working-directory",
   "description": "Session working directories with durable changes and model context",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/settings/settings/package.json b/packages/settings/settings/package.json
index 254468751d..10a195d2f9 100644
--- a/packages/settings/settings/package.json
+++ b/packages/settings/settings/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-settings",
   "description": "Abstract user-settings seam (ctx.settings) for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/settings/settings/src/index.ts b/packages/settings/settings/src/index.ts
index 9ab841d145..5e9a9cd59d 100644
--- a/packages/settings/settings/src/index.ts
+++ b/packages/settings/settings/src/index.ts
@@ -264,7 +264,7 @@ export class SettingsForms extends Service {
    * @throws If this instance already has a registered policy.
    */
   configure(presentation: { auto?: boolean }, owner: Fiber = this.ctx.fiber): () => void {
-    const fiber = owner
+    const fiber = owner.ctx.fiber
     if (this.presentations.has(fiber)) throw new Error('Settings presentation is already configured for this plugin instance')
     const policy = { ...presentation }
     this.presentations.set(fiber, policy)
@@ -309,7 +309,7 @@ export class SettingsForms extends Service {
       if (form === undefined) return []
       active.add(entry.id)
       const raw = JSON.stringify([entry.fiber.uid, schema.toJSON(), entry.options.config ?? {}])
-      const autoGenerate = this.presentations.get(entry.fiber)?.auto ?? true
+      const autoGenerate = this.presentations.get(entry.fiber.ctx.fiber)?.auto ?? true
       const previous = this.revisions.get(entry.id)
       const revision = previous === undefined ? 0 : previous.revision + Number(previous.raw !== raw)
       this.revisions.set(entry.id, { raw, revision, ns: entry.options.id as SettingsNamespace, autoGenerate })
diff --git a/packages/shell/bash-local/package.json b/packages/shell/bash-local/package.json
index 402600d832..8291bb9224 100644
--- a/packages/shell/bash-local/package.json
+++ b/packages/shell/bash-local/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-bash-local",
   "description": "Local-subprocess implementation of the DeepSeek Harness bash executor seam",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/shell/bash-sandbox/package.json b/packages/shell/bash-sandbox/package.json
index 83655aff63..03fc7caa17 100644
--- a/packages/shell/bash-sandbox/package.json
+++ b/packages/shell/bash-sandbox/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-bash-sandbox",
   "description": "Sandbox-consuming implementation of the DeepSeek Harness bash executor seam (confines every command via ctx.sandbox, reports denial/enforcement result facts)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/shell/pwsh-local/package.json b/packages/shell/pwsh-local/package.json
index 17a1248f37..61857f229d 100644
--- a/packages/shell/pwsh-local/package.json
+++ b/packages/shell/pwsh-local/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-pwsh-local",
   "description": "Local PowerShell implementation of the DeepSeek Harness bash executor seam",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/shell/pwsh-sandbox/package.json b/packages/shell/pwsh-sandbox/package.json
index a1e6e230e7..175c9dc35b 100644
--- a/packages/shell/pwsh-sandbox/package.json
+++ b/packages/shell/pwsh-sandbox/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-pwsh-sandbox",
   "description": "Sandbox-consuming implementation of the DeepSeek Harness PowerShell executor seam (confines every command via ctx.sandbox, reports denial/enforcement result facts)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/shell/shell-env/package.json b/packages/shell/shell-env/package.json
index c9065adabd..87a4541138 100644
--- a/packages/shell/shell-env/package.json
+++ b/packages/shell/shell-env/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-shell-env",
   "description": "Tool-independent managed DSH_* shell environment registry",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/shell/shell/package.json b/packages/shell/shell/package.json
index 1514b06872..18cd3c46e8 100644
--- a/packages/shell/shell/package.json
+++ b/packages/shell/shell/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-shell",
   "description": "Abstract bash executor seam (ctx.shell) for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/shell/tool-bash-persistent/package.json b/packages/shell/tool-bash-persistent/package.json
index cbf0ece700..6346cad8fb 100644
--- a/packages/shell/tool-bash-persistent/package.json
+++ b/packages/shell/tool-bash-persistent/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-bash-persistent",
   "description": "Model-facing owner-scoped persistent Bash tool backed by the Harness PTY service",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/shell/tool-bash/package.json b/packages/shell/tool-bash/package.json
index f4693ec3dc..eea06255dc 100644
--- a/packages/shell/tool-bash/package.json
+++ b/packages/shell/tool-bash/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-bash",
   "description": "Model-facing bash tool with optional generic background-job and sandbox-escalation support",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/shell/tool-pwsh-persistent/package.json b/packages/shell/tool-pwsh-persistent/package.json
index 7c1b40fcdd..e46a389ae9 100644
--- a/packages/shell/tool-pwsh-persistent/package.json
+++ b/packages/shell/tool-pwsh-persistent/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-pwsh-persistent",
   "description": "Model-facing owner-scoped persistent PowerShell tool backed by the Harness PTY service",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/shell/tool-pwsh/package.json b/packages/shell/tool-pwsh/package.json
index f625f40107..f258f89182 100644
--- a/packages/shell/tool-pwsh/package.json
+++ b/packages/shell/tool-pwsh/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-pwsh",
   "description": "Model-facing pwsh tool over the bash executor seam",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/skill/skill-filesystem/package.json b/packages/skill/skill-filesystem/package.json
index e1f168712e..57f80c37f7 100644
--- a/packages/skill/skill-filesystem/package.json
+++ b/packages/skill/skill-filesystem/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-skill-filesystem",
   "description": "Local filesystem skill provider for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/skill/skill-office/package.json b/packages/skill/skill-office/package.json
index 4233996584..37b59a3814 100644
--- a/packages/skill/skill-office/package.json
+++ b/packages/skill/skill-office/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-skill-office",
   "description": "Bundled Word, PowerPoint, and Excel workflows and LibreOffice Kit operations",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/skill/skill/package.json b/packages/skill/skill/package.json
index da6e003a26..ca9c46322f 100644
--- a/packages/skill/skill/package.json
+++ b/packages/skill/skill/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-skill",
   "description": "Agent skill provider registry for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/skill/tool-skill/package.json b/packages/skill/tool-skill/package.json
index c503af80fc..59d95367a5 100644
--- a/packages/skill/tool-skill/package.json
+++ b/packages/skill/tool-skill/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-skill",
   "description": "Model-facing skill loading tool for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/skill/tool-workspace-dependencies/package.json b/packages/skill/tool-workspace-dependencies/package.json
index 05455647bf..4c82f4afa9 100644
--- a/packages/skill/tool-workspace-dependencies/package.json
+++ b/packages/skill/tool-workspace-dependencies/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-workspace-dependencies",
   "description": "The load_workspace_dependencies tool: absolute paths into a bundled Python, Node.js, and pnpm payload",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/spill/spill-local/package.json b/packages/spill/spill-local/package.json
index 2c04d683b2..c225fe14ff 100644
--- a/packages/spill/spill-local/package.json
+++ b/packages/spill/spill-local/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-spill-local",
   "description": "Local-filesystem implementation of the DeepSeek Harness spill storage seam (private session-scoped files)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/spill/spill-policy/package.json b/packages/spill/spill-policy/package.json
index 25ea2d971e..94c0fe061d 100644
--- a/packages/spill/spill-policy/package.json
+++ b/packages/spill/spill-policy/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-spill-policy",
   "description": "Token-budgeted tool-result retention with recoverable text and image paths",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/spill/spill/package.json b/packages/spill/spill/package.json
index 895e05866c..84b7cd45bb 100644
--- a/packages/spill/spill/package.json
+++ b/packages/spill/spill/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-spill",
   "description": "Abstract spill storage seam (ctx.spillStore) for the DeepSeek Harness — save oversized tool text and return a retrieval locator",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/ssh/fs-ssh/package.json b/packages/ssh/fs-ssh/package.json
index 4d7f7edf81..33c24ef68e 100644
--- a/packages/ssh/fs-ssh/package.json
+++ b/packages/ssh/fs-ssh/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-fs-ssh",
   "description": "Filesystem provider over the shared POSIX SSH helper",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/ssh/sandbox-ssh/package.json b/packages/ssh/sandbox-ssh/package.json
index 2438871d1b..3192d3b71a 100644
--- a/packages/ssh/sandbox-ssh/package.json
+++ b/packages/ssh/sandbox-ssh/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sandbox-ssh",
   "description": "Remote POSIX sandbox argv provider over the shared SSH helper",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/ssh/ssh-helper-runtime/package.json b/packages/ssh/ssh-helper-runtime/package.json
index fc29427300..c3f6bb0cd5 100644
--- a/packages/ssh/ssh-helper-runtime/package.json
+++ b/packages/ssh/ssh-helper-runtime/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-ssh-helper-runtime",
   "description": "Private executable carrier for the POSIX SSH helper and managed workers",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "private": true,
   "type": "module",
   "main": "lib/index.js",
diff --git a/packages/ssh/ssh/package.json b/packages/ssh/ssh/package.json
index 0fcaf2f98f..171b3c99b7 100644
--- a/packages/ssh/ssh/package.json
+++ b/packages/ssh/ssh/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-ssh",
   "description": "Shared OpenSSH connection and versioned POSIX remote helper",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/ssh/subprocess-ssh/package.json b/packages/ssh/subprocess-ssh/package.json
index e9d97db093..b5d6753703 100644
--- a/packages/ssh/subprocess-ssh/package.json
+++ b/packages/ssh/subprocess-ssh/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-subprocess-ssh",
   "description": "Subprocess and terminal provider over the shared POSIX SSH helper",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/storage/storage-domain/package.json b/packages/storage/storage-domain/package.json
index 3c1d4f5149..57eee1202b 100644
--- a/packages/storage/storage-domain/package.json
+++ b/packages/storage/storage-domain/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-storage-domain",
   "description": "Domain data form (ctx.storage.domain): schema-validated, event-emitting KV domains over storage backends for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/storage/storage-json/package.json b/packages/storage/storage-json/package.json
index f04fd9a33e..e6c3ea2c4b 100644
--- a/packages/storage/storage-json/package.json
+++ b/packages/storage/storage-json/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-storage-json",
   "description": "JSON file KV storage backend for the DeepSeek Harness storage hub",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/storage/storage-sqlite/package.json b/packages/storage/storage-sqlite/package.json
index 71a886d83c..c046c39068 100644
--- a/packages/storage/storage-sqlite/package.json
+++ b/packages/storage/storage-sqlite/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-storage-sqlite",
   "description": "SQLite storage backend (kv facet) for the DeepSeek Harness storage hub",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/storage/storage/package.json b/packages/storage/storage/package.json
index 5976ec19ae..e0e2433fbe 100644
--- a/packages/storage/storage/package.json
+++ b/packages/storage/storage/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-storage",
   "description": "Storage hub (ctx.storage): named backend registry plus mounted data-form facilities for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subagent/subagent-acp/package.json b/packages/subagent/subagent-acp/package.json
index 166e23ae60..92fc1705e5 100644
--- a/packages/subagent/subagent-acp/package.json
+++ b/packages/subagent/subagent-acp/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-subagent-acp",
   "description": "Out-of-process ACP subagent backend: drives a child agent in a spawned subprocess over the Agent Client Protocol",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subagent/subagent-claude-code/package.json b/packages/subagent/subagent-claude-code/package.json
index abba563c41..bd59808055 100644
--- a/packages/subagent/subagent-claude-code/package.json
+++ b/packages/subagent/subagent-claude-code/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-subagent-claude-code",
   "description": "One-shot Claude Code subagent provider over the official Agent SDK",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subagent/subagent-codex/package.json b/packages/subagent/subagent-codex/package.json
index 3a052e23c0..05df46cbc9 100644
--- a/packages/subagent/subagent-codex/package.json
+++ b/packages/subagent/subagent-codex/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-subagent-codex",
   "description": "One-shot Codex subagent provider over the official app-server protocol",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subagent/subagent-dsh-sdk/package.json b/packages/subagent/subagent-dsh-sdk/package.json
index fe6b04091d..ec54e50e7b 100644
--- a/packages/subagent/subagent-dsh-sdk/package.json
+++ b/packages/subagent/subagent-dsh-sdk/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-subagent-dsh-sdk",
   "description": "Out-of-process SDK subagent backend: drives a child DeepSeek Harness runtime subprocess over stdio JSON-RPC through the TypeScript SDK client",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subagent/subagent-fork-in-process/package.json b/packages/subagent/subagent-fork-in-process/package.json
index 3fdafd899b..896aea9b1b 100644
--- a/packages/subagent/subagent-fork-in-process/package.json
+++ b/packages/subagent/subagent-fork-in-process/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-subagent-fork-in-process",
   "description": "In-process fork subagent backend: runs a child agent seeded with a prefix of the parent's log",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subagent/subagent-spawn-in-process/package.json b/packages/subagent/subagent-spawn-in-process/package.json
index f268dd3869..5eb7538c7e 100644
--- a/packages/subagent/subagent-spawn-in-process/package.json
+++ b/packages/subagent/subagent-spawn-in-process/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-subagent-spawn-in-process",
   "description": "In-process spawn subagent backend: runs a fresh child agent on ctx.agents",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subagent/subagent/package.json b/packages/subagent/subagent/package.json
index dd685d2dd2..273eabbd95 100644
--- a/packages/subagent/subagent/package.json
+++ b/packages/subagent/subagent/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-subagent",
   "description": "Abstract subagent seam (ctx.subagents): named-provider registry for delegating to child agents",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subagent/tool-subagent-control/package.json b/packages/subagent/tool-subagent-control/package.json
index 2390785150..9491da3fbf 100644
--- a/packages/subagent/tool-subagent-control/package.json
+++ b/packages/subagent/tool-subagent-control/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-subagent-control",
   "description": "Shared messaging, interruption, and child discovery tools for subagents",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subagent/tool-subagent/package.json b/packages/subagent/tool-subagent/package.json
index 22f0a48c91..efce273b25 100644
--- a/packages/subagent/tool-subagent/package.json
+++ b/packages/subagent/tool-subagent/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-subagent",
   "description": "Model-facing subagent delegation tool over the ctx.subagents seam",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subprocess/subprocess-local/package.json b/packages/subprocess/subprocess-local/package.json
index 673e4e751c..fdc2ada33b 100644
--- a/packages/subprocess/subprocess-local/package.json
+++ b/packages/subprocess/subprocess-local/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-subprocess-local",
   "description": "Local-subprocess implementation of the DeepSeek Harness subprocess seam",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subprocess/subprocess/package.json b/packages/subprocess/subprocess/package.json
index aa42e0125a..e4a348ffba 100644
--- a/packages/subprocess/subprocess/package.json
+++ b/packages/subprocess/subprocess/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-subprocess",
   "description": "Subprocess seam (ctx.subprocess) for the DeepSeek Harness \u2014 managed process groups, bounded spill-backed output, and escalated kills behind one abstract service",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/subprocess/win32-process/package.json b/packages/subprocess/win32-process/package.json
index ab63e3f07c..56ae7b55ec 100644
--- a/packages/subprocess/win32-process/package.json
+++ b/packages/subprocess/win32-process/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-win32-process",
   "description": "Shared low-level Win32 process, stdio, and Job Object primitives",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/telemetry/otel/package.json b/packages/telemetry/otel/package.json
index a36de2b946..40257f0ecd 100644
--- a/packages/telemetry/otel/package.json
+++ b/packages/telemetry/otel/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-otel",
   "description": "Cordis service for independent ordinary-event and byte-bounded Session-log OTLP channels",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/terminal/terminal-bash/package.json b/packages/terminal/terminal-bash/package.json
index e9a263808f..de6d017630 100644
--- a/packages/terminal/terminal-bash/package.json
+++ b/packages/terminal/terminal-bash/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-terminal-bash",
   "description": "Persistent shell PTY backend over the DeepSeek Harness subprocess terminal primitive",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/terminal/terminal/package.json b/packages/terminal/terminal/package.json
index a2f5e9700d..383b032dfa 100644
--- a/packages/terminal/terminal/package.json
+++ b/packages/terminal/terminal/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-terminal",
   "description": "Persistent PTY session seam for the DeepSeek Harness — owner-scoped ids, backend registry, interactive sends, reads, signals, and awaited cleanup",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/test-support/agent-loop-testkit/package.json b/packages/test-support/agent-loop-testkit/package.json
index c93c7374f9..6f7bff25c1 100644
--- a/packages/test-support/agent-loop-testkit/package.json
+++ b/packages/test-support/agent-loop-testkit/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-agent-loop-testkit",
   "description": "Prerequisite mounting, production AgentLoop drivers, and Inbox stubs for tests",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/test-support/client-runtime/README.i18n.yaml b/packages/test-support/client-runtime/README.i18n.yaml
index c9b78ee9ca..3da93e2162 100644
--- a/packages/test-support/client-runtime/README.i18n.yaml
+++ b/packages/test-support/client-runtime/README.i18n.yaml
@@ -6,8 +6,8 @@
   en: 6fd77b7a27000bf1
   zh: 4a9606aa75285111
 /deepseek-ai-dsh-client-test-runtime:
-  en: edb01d7d9545062d
-  zh: de5e5ac8a9ff2f9b
+  en: c8ace9e40ec1a7a0
+  zh: d952212ed5d6acb6
 /deepseek-ai-dsh-client-test-runtime/summary:
   en: ff69de920b4ab273
   zh: 225437473535326a
@@ -30,8 +30,8 @@
   en: 1442fc215c8128e8
   zh: 8439861b08e46ea2
 /deepseek-ai-dsh-client-test-runtime/use-this-package/roster-and-startup-behavior:
-  en: 707b824ae6391cc0
-  zh: bb7621826e6b07db
+  en: 4dc5a5be6d89f43c
+  zh: df2d67460aa863d9
 /deepseek-ai-dsh-client-test-runtime/use-this-package/when-to-use-it:
   en: eb2f9bc90acb7a62
   zh: cb59a2134bc83106
diff --git a/packages/test-support/client-runtime/README.md b/packages/test-support/client-runtime/README.md
index 0fdb4b7fde..6164a11dbb 100644
--- a/packages/test-support/client-runtime/README.md
+++ b/packages/test-support/client-runtime/README.md
@@ -7,6 +7,8 @@ kind: "package-library"
 
 English | [中文](README.zh.md)
 
+Direct component fixtures use `contextMenuHook(open)` to supply the global menu hook with production gesture handling. An unstubbed activation throws; Slot composition tests mount the menu plugin itself.
+
 ## Summary
 
 `SlotTestRuntime.create()` lets Vitest suites drive production slots, stores, typed Session and Workspace fixtures, and local DOM assertions in jsdom. For plugin activation, reload, reconnect, and cleanup tests, `createClientTest` starts the web profile's bundle roster with endpoint-named Remote mocks, without a business Host. Missing services and unstubbed calls fail explicitly. The whole-client fixture owns startup and disposal; the local runtime provides idempotent disposal. Use this package through `devDependencies` for client tests; it is not a product plugin.
@@ -93,7 +95,7 @@ The [generic Remote proxy](../remote-mock/README.md#remote-proxy) supports every
 
 ### Roster and startup behavior
 
-`webApp` is the `web` profile's browser roster, read when the assembly entry is first imported from its bundles (`dsh-base`, then `dsh-web-app`) as the launcher composes them, except that a patch matching nothing throws here where the launcher warns: each bundle's `dsh.bundle.patch` list is parsed with the include plugin's YAML dialect and composed by its `applyEntryPatches`, and every enabled row whose package declares `dsh.client.platform === 'web'` becomes a row carrying that declaration's `inject` and `immediately`; `bundleRoster(bundles, anchor, disabledContext)` accepts an explicit Loader evaluation scope for conditional `disabled` flags; without one, browser expressions are rejected. Both bundle and browser-entry lookup prefer an anchor manifest with the requested package name over dependency directories, including self-referencing bundles. `webApp` supplies the Web profile name, not business Host services. Nothing is copied from the bundles, so a bundle change is visible at the next test run. `webApp.closure(names)` keeps the named rows plus everything they inject, transitively (the rows a spec needs to boot those plugins as the bundle composes them), `webApp.pick(names)` and `webApp.without(names)` cut it down by hand, all three throw on unknown names, and `ClientRoster.of(rows)` builds one inline. `remoteDefaultResponses` holds default responses for exactly the Remote endpoints the roster calls while booting with no sessions, no workspaces, and default settings; a spec layers its own `RemoteTable` on top with `mock.load(table)`, and any call without a rule fails the test at `dispose()` through `mock.assertNoUnmatched()`. `mount` requires a roster that provides `uiRenderer`; `start` fails loud otherwise instead of returning an empty container. `client.connection` is the roster's Connection service (no `Context` augmentation declares it), and `connectTimeoutMs` bounds the readiness wait, whose failure message lists the mock log. `reload(name)` rebuilds one Loader entry through the shared Client Modules helper (registry-first teardown, then `entry.refresh()`); each client retains its own module system and instance-bound Connection replacement, so starts and reloads can overlap without changing a page global. `unload(name)` removes an entry and waits for plugin cleanup; `flush()` settles React inside `act`. jsdom implements neither `EventSource` (client-hmr opens one at apply) nor `ResizeObserver` nor the `document.fonts` event target (layout components observe size and font loading at mount), so `start` reference-counts inert stubs for whichever global is absent and `dispose` removes exactly those — a jsdom gap, not a client identity channel. The `@deepseek-ai/dsh-api-remotes` row is dropped from every roster: its generated Remote clients exist only in built `lib/`, and `remote.<ns>` is what the tier replaces anyway. The `@deepseek-ai/dsh-api-remote-access` row, which mounts its own generated contribution, is dropped too, and `start` installs `allowAllAccessPlugin`, or `staticAccessPlugin(options.access)`, in its place; a plan `provide` entry for either row is refused. `start` instead provides one contract-free proxy per `remote.<ns>` service the roster injects (plus the namespaces the mock has rules for at that point; a namespace first registered later has no proxy); `ctx.remote.<ns>.<method>(...args)` becomes a call on the endpoint `<ns>/<method>` carrying the positional args, a stream when the mock registered a `stream()` script and a unary call otherwise, with the generated client's outcome folding (`gateway/internal` for carrier throws, `gateway/cancelled` on abort). An endpoint without a rule is still dispatched, so the mock logs it and `dispose()` fails the test.
+`webApp` is the `web` profile's browser roster, read when the assembly entry is first imported from its bundles (`dsh-base`, then `dsh-web-app`) as the launcher composes them, except that a patch matching nothing throws here where the launcher warns: each bundle's `dsh.bundle.patch` list is parsed with the include plugin's YAML dialect and composed by its `applyEntryPatches`, and every enabled row whose package declares `dsh.client.platform === 'web'` becomes a row carrying that declaration's `inject` and `immediately`; `bundleRoster(bundles, anchor, disabledContext)` accepts an explicit Loader evaluation scope for conditional `disabled` flags; without one, browser expressions are rejected. Both bundle and browser-entry lookup prefer an anchor manifest with the requested package name over dependency directories, including self-referencing bundles. `webApp` supplies the Web profile name, not business Host services. Nothing is copied from the bundles, so a bundle change is visible at the next test run. `webApp.closure(names)` keeps the named rows plus everything they inject, transitively (the rows a spec needs to boot those plugins as the bundle composes them), `webApp.pick(names)` and `webApp.without(names)` cut it down by hand, all three throw on unknown names, and `ClientRoster.of(rows)` builds one inline. `remoteDefaultResponses` holds default responses for exactly the Remote endpoints the roster calls while booting with no sessions, no workspaces, and default settings; a spec layers its own `RemoteTable` on top with `mock.load(table)`, and any call without a rule fails the test at `dispose()` through `mock.assertNoUnmatched()`. `mount` requires a roster that provides `uiRenderer`; `start` fails loud otherwise instead of returning an empty container. `client.connection` is the roster's Connection service (no `Context` augmentation declares it), and `connectTimeoutMs` bounds the readiness wait, whose failure message lists the mock log. `reload(name)` rebuilds one Loader entry through the shared Client Modules helper (registry-first teardown, then `entry.refresh()`); each client retains its own module system and instance-bound Connection replacement, so starts and reloads can overlap without changing a page global. `unload(name)` removes an entry and waits for plugin cleanup; `flush()` settles React inside `act`. jsdom implements neither `EventSource` (client-hmr opens one at apply) nor `ResizeObserver`, `matchMedia`, or the `document.fonts` event target (layout components observe size, media queries, and font loading at mount), so `start` reference-counts inert stubs for whichever global is absent and `dispose` removes exactly those — a jsdom gap, not a client identity channel. The `@deepseek-ai/dsh-api-remotes` row is dropped from every roster: its generated Remote clients exist only in built `lib/`, and `remote.<ns>` is what the tier replaces anyway. The `@deepseek-ai/dsh-api-remote-access` row, which mounts its own generated contribution, is dropped too, and `start` installs `allowAllAccessPlugin`, or `staticAccessPlugin(options.access)`, in its place; a plan `provide` entry for either row is refused. `start` instead provides one contract-free proxy per `remote.<ns>` service the roster injects (plus the namespaces the mock has rules for at that point; a namespace first registered later has no proxy); `ctx.remote.<ns>.<method>(...args)` becomes a call on the endpoint `<ns>/<method>` carrying the positional args, a stream when the mock registered a `stream()` script and a unary call otherwise, with the generated client's outcome folding (`gateway/internal` for carrier throws, `gateway/cancelled` on abort). An endpoint without a rule is still dispatched, so the mock logs it and `dispose()` fails the test.
 
 ### When to use it
 
diff --git a/packages/test-support/client-runtime/README.zh.md b/packages/test-support/client-runtime/README.zh.md
index b82d0ac985..4c03169b2d 100644
--- a/packages/test-support/client-runtime/README.zh.md
+++ b/packages/test-support/client-runtime/README.zh.md
@@ -7,6 +7,8 @@ kind: "package-library"
 
 [English](README.md) | 中文
 
+直接挂载组件的夹具使用 `contextMenuHook(open)` 提供全局菜单 hook，并复用生产手势处理。未提供行为的触发会抛错；Slot 组合测试挂载菜单插件本身。
+
 ## 概述
 
 `SlotTestRuntime.create()` 让 Vitest 套件在 jsdom 中驱动生产 slot、store、带类型的 Session 与 Workspace fixture，并对局部 DOM 断言。面向插件激活、重载、重连与清理的测试，`createClientTest` 使用具名端点 Remote mock 启动 web profile 的 bundle roster，无需业务 Host。缺失服务与未打桩调用会明确失败。整机 fixture 拥有启动和销毁，局部 runtime 提供幂等销毁。通过 `devDependencies` 将本包用于客户端测试；它不是产品插件。
@@ -93,7 +95,7 @@ test('registers into the sidebar', async ({ remote, start }) => {
 
 ### Roster 与启动行为
 
-`webApp` 是 `web` profile 的浏览器 roster，首次 import 装配入口时从它的 bundle（先 `dsh-base`、再 `dsh-web-app`）按启动器的方式现读，只是匹配不到任何行的补丁在这里抛错、启动器只警告：每个 bundle 的 `dsh.bundle.patch` 列表用 include 插件的 YAML 方言解析、用它的 `applyEntryPatches` 合成，每个未禁用且其包声明 `dsh.client.platform === 'web'` 的行成为一行，带上该声明的 `inject` 与 `immediately`；`bundleRoster(bundles, anchor, disabledContext)` 接受显式 Loader 求值作用域来处理条件 `disabled` 标记；未提供作用域时拒绝浏览器表达式。查找 bundle 和浏览器入口时，优先使用包名匹配的 anchor 清单，再搜索依赖目录；这也适用于注册自身浏览器入口的 bundle。`webApp` 仅提供 Web profile 名称，不提供业务 Host 服务。没有任何东西从 bundle 拷贝出来，bundle 一改下次跑测试就能看见。`webApp.closure(names)` 保留点名的行及其传递注入的全部行（即按 bundle 组合方式起这些插件所需的行），`webApp.pick(names)` 与 `webApp.without(names)` 手工裁剪，三者都对未知名字抛错，`ClientRoster.of(rows)` 内联构造一份。`remoteDefaultResponses` 是 roster 在没有 session、没有 workspace、默认设置下启动时恰好会打的那些 Remote 端点的默认响应；测试用 `mock.load(table)` 在其上叠加自己的 `RemoteTable`，任何没有规则的调用都会在 `dispose()` 时经 `mock.assertNoUnmatched()` 让测试失败。`mount` 要求 roster 提供 `uiRenderer`；否则 `start` 响亮失败而不是返回一个空容器。`client.connection` 是 roster 的 Connection 服务（没有任何 `Context` 增强声明它），`connectTimeoutMs` 限定等就绪的时长，超时消息列出 mock log。`reload(name)` 通过共享的 Client Modules 辅助函数重建一个 Loader entry（先拆 registry，再 `entry.refresh()`）；每个客户端都保留自己的模块系统和绑定实例的 Connection 替换，因此启动与重载可以重叠而无需改写页面全局变量。`unload(name)` 移除 entry 并等待插件清理完成，`flush()` 在 `act` 内让 React 落定。jsdom 既没有 `EventSource`（client-hmr 在 apply 时打开一个）也没有 `ResizeObserver` 和 `document.fonts` 事件目标（布局组件挂载时观察尺寸与字体加载），所以 `start` 对缺失的全局惰性桩做引用计数，`dispose` 只移除它装的那些——这是 jsdom 的缺口，不是客户端身份通道。每个 roster 里的 `@deepseek-ai/dsh-api-remotes` 行都会被去掉：它生成的 Remote 客户端只存在于构建后的 `lib/`，而 `remote.<ns>` 正是本档要替掉的东西。自行挂载其生成 contribution 的 `@deepseek-ai/dsh-api-remote-access` 行同样会被去掉，`start` 改为安装 `allowAllAccessPlugin` 或 `staticAccessPlugin(options.access)`；计划中为这两行之一提供的 `provide` 项会被拒绝。`start` 改为给 roster 注入的每个 `remote.<ns>` 服务（加上此刻 mock 登记过规则的命名空间；之后才首次登记的命名空间没有代理）提供一个无契约代理；`ctx.remote.<ns>.<method>(...args)` 变成对端点 `<ns>/<method>` 的调用，携带位置参数，mock 登记了 `stream()` 脚本的走流、否则走一元，并沿用生成客户端的结果折叠（载体抛错折成 `gateway/internal`，中止折成 `gateway/cancelled`）。没有规则的端点照样发出，所以 mock 会记下它、`dispose()` 让测试失败。
+`webApp` 是 `web` profile 的浏览器 roster，首次 import 装配入口时从它的 bundle（先 `dsh-base`、再 `dsh-web-app`）按启动器的方式现读，只是匹配不到任何行的补丁在这里抛错、启动器只警告：每个 bundle 的 `dsh.bundle.patch` 列表用 include 插件的 YAML 方言解析、用它的 `applyEntryPatches` 合成，每个未禁用且其包声明 `dsh.client.platform === 'web'` 的行成为一行，带上该声明的 `inject` 与 `immediately`；`bundleRoster(bundles, anchor, disabledContext)` 接受显式 Loader 求值作用域来处理条件 `disabled` 标记；未提供作用域时拒绝浏览器表达式。查找 bundle 和浏览器入口时，优先使用包名匹配的 anchor 清单，再搜索依赖目录；这也适用于注册自身浏览器入口的 bundle。`webApp` 仅提供 Web profile 名称，不提供业务 Host 服务。没有任何东西从 bundle 拷贝出来，bundle 一改下次跑测试就能看见。`webApp.closure(names)` 保留点名的行及其传递注入的全部行（即按 bundle 组合方式起这些插件所需的行），`webApp.pick(names)` 与 `webApp.without(names)` 手工裁剪，三者都对未知名字抛错，`ClientRoster.of(rows)` 内联构造一份。`remoteDefaultResponses` 是 roster 在没有 session、没有 workspace、默认设置下启动时恰好会打的那些 Remote 端点的默认响应；测试用 `mock.load(table)` 在其上叠加自己的 `RemoteTable`，任何没有规则的调用都会在 `dispose()` 时经 `mock.assertNoUnmatched()` 让测试失败。`mount` 要求 roster 提供 `uiRenderer`；否则 `start` 响亮失败而不是返回一个空容器。`client.connection` 是 roster 的 Connection 服务（没有任何 `Context` 增强声明它），`connectTimeoutMs` 限定等就绪的时长，超时消息列出 mock log。`reload(name)` 通过共享的 Client Modules 辅助函数重建一个 Loader entry（先拆 registry，再 `entry.refresh()`）；每个客户端都保留自己的模块系统和绑定实例的 Connection 替换，因此启动与重载可以重叠而无需改写页面全局变量。`unload(name)` 移除 entry 并等待插件清理完成，`flush()` 在 `act` 内让 React 落定。jsdom 既没有 `EventSource`（client-hmr 在 apply 时打开一个）也没有 `ResizeObserver`、`matchMedia` 和 `document.fonts` 事件目标（布局组件挂载时观察尺寸、媒体查询与字体加载），所以 `start` 对缺失的全局惰性桩做引用计数，`dispose` 只移除它装的那些——这是 jsdom 的缺口，不是客户端身份通道。每个 roster 里的 `@deepseek-ai/dsh-api-remotes` 行都会被去掉：它生成的 Remote 客户端只存在于构建后的 `lib/`，而 `remote.<ns>` 正是本档要替掉的东西。自行挂载其生成 contribution 的 `@deepseek-ai/dsh-api-remote-access` 行同样会被去掉，`start` 改为安装 `allowAllAccessPlugin` 或 `staticAccessPlugin(options.access)`；计划中为这两行之一提供的 `provide` 项会被拒绝。`start` 改为给 roster 注入的每个 `remote.<ns>` 服务（加上此刻 mock 登记过规则的命名空间；之后才首次登记的命名空间没有代理）提供一个无契约代理；`ctx.remote.<ns>.<method>(...args)` 变成对端点 `<ns>/<method>` 的调用，携带位置参数，mock 登记了 `stream()` 脚本的走流、否则走一元，并沿用生成客户端的结果折叠（载体抛错折成 `gateway/internal`，中止折成 `gateway/cancelled`）。没有规则的端点照样发出，所以 mock 会记下它、`dispose()` 让测试失败。
 
 ### 何时使用
 
diff --git a/packages/test-support/client-runtime/package.json b/packages/test-support/client-runtime/package.json
index 12137a6b98..6c8b0e9c3a 100644
--- a/packages/test-support/client-runtime/package.json
+++ b/packages/test-support/client-runtime/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-client-test-runtime",
   "description": "Browser test runtimes: a jsdom slot bench with test-owned Session and Workspace doubles, and a whole-client tier that boots the web roster through the production bootClient over an endpoint-named Remote mock",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
@@ -52,7 +52,8 @@
     "@deepseek-ai/dsh-subagent": "workspace:*",
     "@deepseek-ai/dsh-typert-protocol": "workspace:*",
     "react": "^18.2.0",
-    "react-dom": "^18.2.0"
+    "react-dom": "^18.2.0",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "devDependencies": {
     "@deepseek-ai/cordis": "workspace:~",
@@ -87,7 +88,8 @@
     "@deepseek-ai/dsh-web-app": "workspace:*",
     "@types/js-yaml": "^4.0.9",
     "react": "^18.2.0",
-    "react-dom": "^18.2.0"
+    "react-dom": "^18.2.0",
+    "@deepseek-ai/dsh-client-ui-context-menu": "workspace:*"
   },
   "files": [
     "lib/index.js",
diff --git a/packages/test-support/client-runtime/src/assembly/test-client.ts b/packages/test-support/client-runtime/src/assembly/test-client.ts
index 09a9fc97ce..507c4506b0 100644
--- a/packages/test-support/client-runtime/src/assembly/test-client.ts
+++ b/packages/test-support/client-runtime/src/assembly/test-client.ts
@@ -80,10 +80,15 @@ const DEFAULT_CONNECT_TIMEOUT_MS = 5_000
 
 /**
  * Browser globals jsdom lacks that roster plugins touch at apply or mount:
- * client-hmr opens an `EventSource`; layout components observe size and font loading.
+ * client-hmr opens an `EventSource`; layout components observe size, media queries, and font loading.
  * Inert stand-ins, installed only where the global is absent.
  */
 const JSDOM_SHIMS: Readonly<Record<string, unknown>> = {
+  matchMedia: (media: string): MediaQueryList => Object.assign(new EventTarget(), {
+    media, matches: false, onchange: null,
+    addListener() {},
+    removeListener() {},
+  }),
   EventSource: class {
     addEventListener(): void {}
     close(): void {}
diff --git a/packages/test-support/client-runtime/src/context-menu.ts b/packages/test-support/client-runtime/src/context-menu.ts
new file mode 100644
index 0000000000..25246f07cd
--- /dev/null
+++ b/packages/test-support/client-runtime/src/context-menu.ts
@@ -0,0 +1,17 @@
+/** Gesture bindings for direct component fixtures, using the production adapter. */
+import type { ContextMenuTriggerProps, MenuPoint, ContextMenuTarget } from '@deepseek-ai/dsh-client-ui-context-menu/client'
+import { createContextMenuBindings } from '@deepseek-ai/dsh-client-ui-context-menu/src/client/trigger.ts'
+
+/**
+ * Supply the global hook to a component mounted outside the Slot renderer.
+ * @param open - Observe captured targets; an unstubbed activation throws.
+ * @returns Stable hook using the production pointer and keyboard handlers.
+ */
+export function contextMenuHook<Target extends object = ContextMenuTarget>(
+  open: (target: Target, point: MenuPoint) => void = () => { throw new Error('Unexpected context menu') },
+): () => {
+  getTriggerProps: (target: Target | (() => Target) | undefined, handlers?: ContextMenuTriggerProps) => ContextMenuTriggerProps
+} {
+  const bindings = createContextMenuBindings(open, () => true)
+  return () => bindings
+}
diff --git a/packages/test-support/client-runtime/src/index.ts b/packages/test-support/client-runtime/src/index.ts
index 2559223d01..b6d8f94afc 100644
--- a/packages/test-support/client-runtime/src/index.ts
+++ b/packages/test-support/client-runtime/src/index.ts
@@ -57,6 +57,7 @@ export {
 export type {
   FixtureSnapshot, SessionBehaviorOverrides, SessionFixture, SessionFixtureSnapshot, Stabilizer,
 } from './fixtures.ts'
+export { contextMenuHook } from './context-menu.ts'
 export { makeTranslate } from './translate.ts'
 export { allowAllAccess, allowAllAccessPlugin, StaticRemoteAccess, staticAccessPlugin } from './access.ts'
 export type { AccessStandardProps, StaticAccessPlugin } from './access.ts'
diff --git a/packages/test-support/client-runtime/tests/assembly-test-client.client.spec.ts b/packages/test-support/client-runtime/tests/assembly-test-client.client.spec.ts
index e4ebaeaaeb..54ad23221d 100644
--- a/packages/test-support/client-runtime/tests/assembly-test-client.client.spec.ts
+++ b/packages/test-support/client-runtime/tests/assembly-test-client.client.spec.ts
@@ -19,7 +19,7 @@ const PARALLEL_PROBE = '@deepseek-ai/dsh-client-test-parallel-probe'
 /** Declared by ui-sidebar, whose SlotMap merge is outside this package's compilation face. */
 const SIDEBAR_SETTINGS = 'sidebar.settings' as never
 const BRAND = '@deepseek-ai/dsh-client-ui-brand-official'
-const globals = globalThis as { EventSource?: unknown; ResizeObserver?: unknown }
+const globals = globalThis as { EventSource?: unknown; ResizeObserver?: unknown; matchMedia?: typeof window.matchMedia }
 /** The whole roster's first boot pays the cold module transform of every plugin package. */
 const COLD_BOOT_TIMEOUT_MS = 60_000
 
@@ -34,6 +34,7 @@ describe('TestClient (jsdom)', () => {
   it('boots the whole web-app roster, connects, mounts, and disposes with nothing unmatched', async () => {
     // Exercise missing-API cleanup independently of the suite's browser defaults.
     vi.stubGlobal('ResizeObserver', undefined)
+    vi.stubGlobal('matchMedia', undefined)
     onTestFinished(() => { vi.unstubAllGlobals() })
     const mock = RemoteMock.create().load(remoteDefaultResponses)
     const client = await TestClient.start({ roster: webApp }, mock, { mount: true })
@@ -45,12 +46,20 @@ describe('TestClient (jsdom)', () => {
     expect('__DSH_TRANSPORT__' in globalThis).toBe(false)
     expect(globals.EventSource).toBeDefined()
     expect(globals.ResizeObserver).toBeDefined()
+    const query = globals.matchMedia!('(pointer: coarse)')
+    expect(query.media).toBe('(pointer: coarse)')
+    expect(query.matches).toBe(false)
+    // oxlint-disable-next-line typescript/no-deprecated -- The shim retains the legacy MediaQueryList methods.
+    query.addListener(null)
+    // oxlint-disable-next-line typescript/no-deprecated -- The shim retains the legacy MediaQueryList methods.
+    query.removeListener(null)
     expect(document.fonts).toBeInstanceOf(EventTarget)
     await client.dispose()
     expect(document.body.contains(container)).toBe(false)
     expect('__DSH_TRANSPORT__' in globalThis).toBe(false)
     expect(globals.EventSource).toBeUndefined()
     expect(globals.ResizeObserver).toBeUndefined()
+    expect(globals.matchMedia).toBeUndefined()
     expect(document.fonts).toBeUndefined()
     await client.dispose()
   }, COLD_BOOT_TIMEOUT_MS)
diff --git a/packages/test-support/client-runtime/tests/context-menu.client.spec.tsx b/packages/test-support/client-runtime/tests/context-menu.client.spec.tsx
new file mode 100644
index 0000000000..d21d0305b0
--- /dev/null
+++ b/packages/test-support/client-runtime/tests/context-menu.client.spec.tsx
@@ -0,0 +1,20 @@
+// @vitest-environment jsdom
+/** Direct component fixtures fail loudly when an unstubbed menu is activated. */
+import { afterEach, expect, it, vi } from 'vitest'
+import { cleanup, fireEvent, render } from '@testing-library/react'
+import { SessionId } from '@deepseek-ai/dsh-session/types'
+import { contextMenuHook } from '../src/context-menu.ts'
+
+afterEach(cleanup)
+
+it('requires an activation observer when a fixture opens a menu', () => {
+  const { getTriggerProps } = contextMenuHook()()
+  const contextMenuProps = getTriggerProps({ kind: 'file', value: { sessionId: SessionId('fixture'), path: '/file' } })
+  const observed = vi.fn()
+  const view = render(<button onContextMenu={(event) => {
+    expect(() => contextMenuProps.onContextMenu?.(event)).toThrow('Unexpected context menu')
+    observed()
+  }}>File</button>)
+  fireEvent.contextMenu(view.getByRole('button'), { clientX: 1, clientY: 2 })
+  expect(observed).toHaveBeenCalledOnce()
+})
diff --git a/packages/test-support/client-runtime/tsconfig.json b/packages/test-support/client-runtime/tsconfig.json
index 0867ea9b86..a4f9971fe0 100644
--- a/packages/test-support/client-runtime/tsconfig.json
+++ b/packages/test-support/client-runtime/tsconfig.json
@@ -3,7 +3,10 @@
   "compilerOptions": {
     "rootDir": "src",
     "outDir": "lib/types",
-    "types": ["client-build-environment", "node"]
+    "types": [
+      "client-build-environment",
+      "node"
+    ]
   },
   "include": [
     "src"
@@ -86,6 +89,9 @@
     },
     {
       "path": "../../client/hmr"
+    },
+    {
+      "path": "../../client/ui-context-menu"
     }
   ]
 }
diff --git a/packages/test-support/llm-mock-server/package.json b/packages/test-support/llm-mock-server/package.json
index 8ae708c1f0..11482dffbb 100644
--- a/packages/test-support/llm-mock-server/package.json
+++ b/packages/test-support/llm-mock-server/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-llm-mock-server",
   "description": "Scriptable Messages HTTP/SSE fault server for LLM recovery tests",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/test-support/llm-replay/package.json b/packages/test-support/llm-replay/package.json
index 2d7c0d9cd9..8c571de06a 100644
--- a/packages/test-support/llm-replay/package.json
+++ b/packages/test-support/llm-replay/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-llm-replay",
   "description": "Replay LLM plugin: short-circuits llm/stream with model chunks reconstructed from a recorded session JSONL (keyless snapshot tests)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/test-support/llm-replay/src/index.ts b/packages/test-support/llm-replay/src/index.ts
index 478398d4ae..d3caea5df0 100644
--- a/packages/test-support/llm-replay/src/index.ts
+++ b/packages/test-support/llm-replay/src/index.ts
@@ -861,7 +861,7 @@ class ReplayAdapter extends LlmAdapter {
 
   constructor(
     providers: readonly ReplayProviderConfig[],
-    private readonly replay: (options: GenerateOptions) => AsyncIterable<StreamChunk>,
+    private readonly replay: (options: GenerateOptions<string>) => AsyncIterable<StreamChunk>,
   ) {
     super()
     this.providers = new Map(providers.map(provider => [provider.id, provider]))
@@ -946,7 +946,7 @@ class ReplayAdapter extends LlmAdapter {
     })
   }
 
-  override stream(options: GenerateOptions): AsyncIterable<StreamChunk> {
+  override stream(options: GenerateOptions<string>): AsyncIterable<StreamChunk> {
     return this.replay(options)
   }
 }
@@ -1047,7 +1047,7 @@ export function installLlmReplay(ctx: Context, config: ReplayConfig): ReplayHand
   const liveSessionIds: (string | undefined)[] = Array.from({ length: scripts.length })
   let nextScript = 0
   const ANON = '\0anon\0' // the key for a call that carries no sessionId
-  const replay = (options: GenerateOptions): AsyncIterable<StreamChunk> => {
+  const replay = (options: GenerateOptions<string>): AsyncIterable<StreamChunk> => {
     const key = options.sessionId ?? ANON
     let state = bound.get(key)
     let unrecorded = false
@@ -1107,7 +1107,7 @@ export function installLlmReplay(ctx: Context, config: ReplayConfig): ReplayHand
   const providers = config.providers ?? []
   const dispose = providers.length > 0
     ? ctx.llm.registerAdapter(providers.map(provider => provider.id), new ReplayAdapter(providers, replay))
-    : ctx.on('llm/stream', (options: GenerateOptions, _next) => replay(options))
+    : ctx.on('llm/stream', (options: GenerateOptions<string>, _next) => replay(options))
   return {
     dispose,
     assertConsumed(): void {
diff --git a/packages/test-support/loader-smoke/package.json b/packages/test-support/loader-smoke/package.json
index 7180ad74f8..245301c7a2 100644
--- a/packages/test-support/loader-smoke/package.json
+++ b/packages/test-support/loader-smoke/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-loader-smoke",
   "description": "Shared subprocess and direct-agent harness for keyless real-Loader example smoke tests",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/test-support/remote-mock/package.json b/packages/test-support/remote-mock/package.json
index e168c53796..f09792178f 100644
--- a/packages/test-support/remote-mock/package.json
+++ b/packages/test-support/remote-mock/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-remote-mock",
   "description": "Endpoint-named mock for Typert Remote traffic: unary answers and stream scripts per <namespace>/<method>, live stream control, a log, and the Connection carrier face whole-client specs install",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/test-support/session-snapshot/package.json b/packages/test-support/session-snapshot/package.json
index 71e6c92eac..aff79b9584 100644
--- a/packages/test-support/session-snapshot/package.json
+++ b/packages/test-support/session-snapshot/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-session-snapshot",
   "description": "Session-log snapshot core with an ACP protocol adapter, expected-output normalization, and fixture invariants",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/test-support/tool-testkit/package.json b/packages/test-support/tool-testkit/package.json
index ca709f6c1a..54b7b0e342 100644
--- a/packages/test-support/tool-testkit/package.json
+++ b/packages/test-support/tool-testkit/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-testkit",
   "description": "Tool definition and execution fixtures for tests and benchmarks",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/todo/tool-todo/package.json b/packages/todo/tool-todo/package.json
index 1af65063c3..11e4887efe 100644
--- a/packages/todo/tool-todo/package.json
+++ b/packages/todo/tool-todo/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-todo",
   "description": "Model-facing todo_write tool over the DeepSeek Harness event-sourced session log",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/typert/generator/package.json b/packages/typert/generator/package.json
index 4e703d01f4..85297741de 100644
--- a/packages/typert/generator/package.json
+++ b/packages/typert/generator/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-typert-generator",
   "description": "TypeScript project analyzer and model-driven Typert artifact generator",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/typert/loader/package.json b/packages/typert/loader/package.json
index bc157d6e28..66adb8006a 100644
--- a/packages/typert/loader/package.json
+++ b/packages/typert/loader/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-typert-loader",
   "description": "Loader integration for generated Typert package contributions",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/typert/protocol/package.json b/packages/typert/protocol/package.json
index 0ac84a66a5..b57a58ba1a 100644
--- a/packages/typert/protocol/package.json
+++ b/packages/typert/protocol/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-typert-protocol",
   "description": "Compiler-independent Remote metadata and Typert provider protocols",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/typert/registry/package.json b/packages/typert/registry/package.json
index 9ccadae578..09d34ffe10 100644
--- a/packages/typert/registry/package.json
+++ b/packages/typert/registry/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-typert-registry",
   "description": "Runtime registry for generated package reflection and Zod schemas",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/atomic-write/package.json b/packages/util/atomic-write/package.json
index 43b8b2098a..3bcca1bcfe 100644
--- a/packages/util/atomic-write/package.json
+++ b/packages/util/atomic-write/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-atomic-write",
   "description": "Zero-dependency atomic file replacement: exclusive-create random-suffix temp + rename carrying the caller-stated permissions (writeFileAtomic)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/brand/package.json b/packages/util/brand/package.json
index 0a804e9a29..6d5ce5f7ef 100644
--- a/packages/util/brand/package.json
+++ b/packages/util/brand/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-brand",
   "description": "Stateless branded primitive types for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/chunked-list/package.json b/packages/util/chunked-list/package.json
index bc5b67a580..c0e53c8b95 100644
--- a/packages/util/chunked-list/package.json
+++ b/packages/util/chunked-list/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-chunked-list",
   "description": "Persistent append-only chunked lists with bounded copying and JSON checkpoint validation",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/code-language/package.json b/packages/util/code-language/package.json
index 4730145136..6067970430 100644
--- a/packages/util/code-language/package.json
+++ b/packages/util/code-language/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-util-code-language",
   "description": "Single file-extension to syntax-highlighting language table shared by Client code surfaces and the Host read card",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/crypto/package.json b/packages/util/crypto/package.json
index a94130e58e..bea25d6618 100644
--- a/packages/util/crypto/package.json
+++ b/packages/util/crypto/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-util-crypto",
   "description": "Zero-dependency browser-safe UUID and byte-encoding helpers",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/deque/package.json b/packages/util/deque/package.json
index b126d017b0..a3240f6612 100644
--- a/packages/util/deque/package.json
+++ b/packages/util/deque/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-deque",
   "description": "Zero-dependency circular deque with amortized constant-time end operations and bounded vacant storage",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/file-drag/package.json b/packages/util/file-drag/package.json
index aa7f32f03a..e801bddf2d 100644
--- a/packages/util/file-drag/package.json
+++ b/packages/util/file-drag/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-util-file-drag",
   "description": "Shared file drag names and native transfer requests",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/home-paths/package.json b/packages/util/home-paths/package.json
index 40d4597980..1536868075 100644
--- a/packages/util/home-paths/package.json
+++ b/packages/util/home-paths/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-home-paths",
   "description": "Shared filesystem path helpers for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/http-proxy/package.json b/packages/util/http-proxy/package.json
index 019a79b521..69d4291ebb 100644
--- a/packages/util/http-proxy/package.json
+++ b/packages/util/http-proxy/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-http-proxy",
   "description": "Process-wide outbound HTTP proxy policy for DeepSeek Harness: resolve it from the launch environment and install it as undici's global dispatcher",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/launch-environment/package.json b/packages/util/launch-environment/package.json
index 2c0ff8beb8..455eb5f2be 100644
--- a/packages/util/launch-environment/package.json
+++ b/packages/util/launch-environment/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-launch-environment",
   "description": "Immutable DeepSeek Harness launch environment that records which layer supplied each value",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/lazy-require/package.json b/packages/util/lazy-require/package.json
index b5977f9055..2b946c8873 100644
--- a/packages/util/lazy-require/package.json
+++ b/packages/util/lazy-require/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-lazy-require",
   "description": "Caller-relative, success-cached lazy loading for CommonJS-compatible Host dependencies",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/native-command/package.json b/packages/util/native-command/package.json
index ca15238f37..23958b7565 100644
--- a/packages/util/native-command/package.json
+++ b/packages/util/native-command/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-native-command",
   "description": "Host-native command and path-opening utilities with shell-free execution, cancellation, desktop detection, and WSL handoff",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/official-bundles/README.i18n.yaml b/packages/util/official-bundles/README.i18n.yaml
index b58cb9c8e7..e843d9aadd 100644
--- a/packages/util/official-bundles/README.i18n.yaml
+++ b/packages/util/official-bundles/README.i18n.yaml
@@ -27,8 +27,8 @@
   en: 27c22abdfff69a41
   zh: e60d828cdb75c263
 /deepseek-ai-dsh-official-bundles/use-this-package/on-demand-bundles:
-  en: 6ba39ba5bfefec79
-  zh: 788a71b5b6f75404
+  en: ba4f412474854ba1
+  zh: 17dae8155c013367
 /deepseek-ai-dsh-official-bundles/understand-the-implementation:
   en: 3fb2b58db529d8be
   zh: 46064459a23d458d
diff --git a/packages/util/official-bundles/README.md b/packages/util/official-bundles/README.md
index 9af85af79f..f1e0d1224b 100644
--- a/packages/util/official-bundles/README.md
+++ b/packages/util/official-bundles/README.md
@@ -41,7 +41,7 @@ Edit this package when the installation's bundle selection or the plugin manager
 
 ### On-demand bundles
 
-`ON_DEMAND_BUNDLES` names the public Official packages installed only on request. `OFFICIAL_ON_DEMAND_CATALOG` embeds their package-owned localized metadata, icons, and optional `dsh.bundle.platforms` declarations for offline discovery and Host platform checks before installation; `pnpm gen-official-bundle-catalog` explicitly updates generated content, and `verify-official-bundle-catalog` checks resource completeness and freshness; builds consume the committed catalog without importing provider code. The catalog contains no install target: the plugin manager derives it from the running version and installation and uses the ordinary bundle installer. The [product-use check](../../../scripts/verify-product-use.ts) composes shipped and on-demand selections against Web without executing providers.
+`ON_DEMAND_BUNDLES` names the public Official packages installed only on request. `OFFICIAL_ON_DEMAND_CATALOG` embeds their package-owned localized metadata, icons, and optional `dsh.bundle.platforms` declarations for offline discovery and Host platform checks before installation; `pnpm gen-official-bundle-catalog` explicitly updates generated content, and `verify-official-bundle-catalog` checks resource completeness and freshness; builds consume the committed catalog without importing provider code. The catalog contains no install target: the plugin manager derives it from the running version and installation and uses the ordinary bundle installer. The [product-use check](../../../scripts/verify-product-use.ts) composes shipped and on-demand selections against Web without executing providers. The catalog also preserves `listedByDefault` so a default-hidden bundle stays hidden until explicitly installed or enabled.
 
 -----
 
diff --git a/packages/util/official-bundles/README.zh.md b/packages/util/official-bundles/README.zh.md
index 91c0722cf7..2ce46257d2 100644
--- a/packages/util/official-bundles/README.zh.md
+++ b/packages/util/official-bundles/README.zh.md
@@ -41,7 +41,7 @@ kind: "package-library"
 
 ### 按需组合包
 
-`ON_DEMAND_BUNDLES` 列出只在请求时安装的官方公开包。`OFFICIAL_ON_DEMAND_CATALOG` 内嵌这些包自己持有的本地化元信息、图标和可选的 `dsh.bundle.platforms` 声明，用于离线发现与安装前的 Host 平台检查；`pnpm gen-official-bundle-catalog` 显式更新生成内容，`verify-official-bundle-catalog` 检查资源完整性与时效；构建使用已提交的目录，不导入提供方代码。目录不包含安装目标：插件管理器根据运行中的版本和安装推导目标，并使用普通的组合包安装器。[产品使用检查](../../../scripts/verify-product-use.ts)针对 Web 组合随附选择和按需选择，不执行提供方。
+`ON_DEMAND_BUNDLES` 列出只在请求时安装的官方公开包。`OFFICIAL_ON_DEMAND_CATALOG` 内嵌这些包自己持有的本地化元信息、图标和可选的 `dsh.bundle.platforms` 声明，用于离线发现与安装前的 Host 平台检查；`pnpm gen-official-bundle-catalog` 显式更新生成内容，`verify-official-bundle-catalog` 检查资源完整性与时效；构建使用已提交的目录，不导入提供方代码。目录不包含安装目标：插件管理器根据运行中的版本和安装推导目标，并使用普通的组合包安装器。[产品使用检查](../../../scripts/verify-product-use.ts)针对 Web 组合随附选择和按需选择，不执行提供方。 目录也保留 `listedByDefault`，使默认隐藏的组合包在用户显式安装或启用前保持隐藏。
 
 -----
 
diff --git a/packages/util/official-bundles/package.json b/packages/util/official-bundles/package.json
index 57d668a0c5..ba49857849 100644
--- a/packages/util/official-bundles/package.json
+++ b/packages/util/official-bundles/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-official-bundles",
   "description": "Installation-owned lists of official dsh bundles (shipped profile templates, optional, on-demand, and retired bundles) and the plugin manager's protected and presented packages",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/official-bundles/src/bundles.ts b/packages/util/official-bundles/src/bundles.ts
index 1a9ba8bf79..0ba7f23235 100644
--- a/packages/util/official-bundles/src/bundles.ts
+++ b/packages/util/official-bundles/src/bundles.ts
@@ -54,7 +54,6 @@ export const DEFAULT_PROFILE_BUNDLES: readonly string[] = ['@deepseek-ai/dsh-bas
  */
 export const OPTIONAL_BUNDLES: readonly string[] = [
   '@deepseek-ai/dsh-personalized-recommendations',
-  '@deepseek-ai/dsh-cua-bundle',
   '@deepseek-ai/dsh-experimental-session-search',
   '@deepseek-ai/dsh-experimental-ralph-bundle',
   '@deepseek-ai/dsh-experimental-terminal-bundle',
@@ -65,6 +64,7 @@ export const OPTIONAL_BUNDLES: readonly string[] = [
   '@deepseek-ai/dsh-experimental-cot-translation-bundle',
   '@deepseek-ai/dsh-experimental-auto-review',
   '@deepseek-ai/dsh-experimental-inspector-profile',
+  '@deepseek-ai/dsh-experimental-liveshare',
   '@deepseek-ai/dsh-experimental-plugin-market-bundle',
   '@deepseek-ai/dsh-experimental-tool-worktree',
   '@deepseek-ai/dsh-experimental-forge-bundle',
@@ -74,4 +74,5 @@ export const OPTIONAL_BUNDLES: readonly string[] = [
 export const ON_DEMAND_BUNDLES: readonly string[] = [
   '@deepseek-ai/dsh-subagent-claude-code',
   '@deepseek-ai/dsh-subagent-codex',
+  '@deepseek-ai/dsh-cua-bundle',
 ]
diff --git a/packages/util/official-bundles/src/catalog.generated.ts b/packages/util/official-bundles/src/catalog.generated.ts
index 8a0cfb7579..3a494f90e6 100644
--- a/packages/util/official-bundles/src/catalog.generated.ts
+++ b/packages/util/official-bundles/src/catalog.generated.ts
@@ -20,4 +20,14 @@ export const OFFICIAL_ON_DEMAND_CATALOG: readonly OfficialBundleCatalogEntry[] =
       icon: 'data:image/svg+xml;base64,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',
     },
   },
+  {
+    packageName: '@deepseek-ai/dsh-cua-bundle',
+    platforms: ['darwin'],
+    listedByDefault: false,
+    meta: {
+      title: { 'de': 'Computernutzung', 'en': 'Computer use', 'es': 'Uso de la computadora', 'fr': 'Utilisation de l\'ordinateur', 'ja': 'Computer Use', 'pt': 'Uso do computador', 'ru': '\u0418\u0441\u043F\u043E\u043B\u044C\u0437\u043E\u0432\u0430\u043D\u0438\u0435 \u043A\u043E\u043C\u043F\u044C\u044E\u0442\u0435\u0440\u0430', 'zh': 'Computer Use' },
+      description: { 'de': 'Unterst\u00FCtzt derzeit macOS; Die Windows-Unterst\u00FCtzung befindet sich in der Entwicklung. L\u00E4dt die Computernutzung f\u00FCr bestehende und neue PTC-Sitzungen. Wechseln Sie in den PTC-Modus und erteilen Sie die Berechtigungen f\u00FCr Barrierefreiheit und Bildschirmaufzeichnung, um ihn zu verwenden.', 'en': 'Currently supports macOS; Windows support is in development. Loads computer use for existing and new PTC sessions. Switch to PTC mode and grant Accessibility and Screen Recording permissions to use it.', 'es': 'Actualmente es compatible con macOS; El soporte para Windows est\u00E1 en desarrollo. Carga el uso de la computadora para sesiones PTC nuevas y existentes. Cambie al modo PTC y otorgue permisos de Accesibilidad y Grabaci\u00F3n de pantalla para usarlo.', 'fr': 'Prend actuellement en charge macOS\u00A0; La prise en charge de Windows est en cours de d\u00E9veloppement. Charge l\'utilisation de l\'ordinateur pour les sessions PTC existantes et nouvelles. Passez en mode PTC et accordez les autorisations d\u2019accessibilit\u00E9 et d\u2019enregistrement d\u2019\u00E9cran pour l\u2019utiliser.', 'ja': '\u73FE\u5728\u306F macOS \u306E\u307F\u5BFE\u5FDC\u3057\u3001Windows \u5BFE\u5FDC\u306F\u958B\u767A\u4E2D\u3067\u3059\u3002\u65E2\u5B58\u304A\u3088\u3073\u65B0\u898F\u306E PTC \u30BB\u30C3\u30B7\u30E7\u30F3\u306B Computer Use \u3092\u8AAD\u307F\u8FBC\u307F\u307E\u3059\u3002PTC \u30E2\u30FC\u30C9\u306B\u5207\u308A\u66FF\u3048\u3001\u30A2\u30AF\u30BB\u30B7\u30D3\u30EA\u30C6\u30A3\u3068\u753B\u9762\u53CE\u9332\u306E\u6A29\u9650\u3092\u8A31\u53EF\u3057\u3066\u4F7F\u7528\u3057\u3066\u304F\u3060\u3055\u3044\u3002', 'pt': 'Atualmente suporta macOS; O suporte Windows est\u00E1 em desenvolvimento. Carrega o uso do computador para sess\u00F5es PTC novas e existentes. Mude para o modo PTC e conceda permiss\u00F5es de acessibilidade e grava\u00E7\u00E3o de tela para us\u00E1-lo.', 'ru': '\u0412 \u043D\u0430\u0441\u0442\u043E\u044F\u0449\u0435\u0435 \u0432\u0440\u0435\u043C\u044F \u043F\u043E\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442\u0441\u044F macOS; \u041F\u043E\u0434\u0434\u0435\u0440\u0436\u043A\u0430 Windows \u043D\u0430\u0445\u043E\u0434\u0438\u0442\u0441\u044F \u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043E\u0442\u043A\u0435. \u0417\u0430\u0433\u0440\u0443\u0436\u0430\u0435\u0442 \u0438\u0441\u043F\u043E\u043B\u044C\u0437\u043E\u0432\u0430\u043D\u0438\u0435 \u043A\u043E\u043C\u043F\u044C\u044E\u0442\u0435\u0440\u0430 \u0434\u043B\u044F \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044E\u0449\u0438\u0445 \u0438 \u043D\u043E\u0432\u044B\u0445 \u0441\u0435\u0430\u043D\u0441\u043E\u0432 PTC. \u041F\u0435\u0440\u0435\u043A\u043B\u044E\u0447\u0438\u0442\u0435\u0441\u044C \u0432 \u0440\u0435\u0436\u0438\u043C PTC \u0438 \u043F\u0440\u0435\u0434\u043E\u0441\u0442\u0430\u0432\u044C\u0442\u0435 \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043D\u0438\u044F \u043D\u0430 \u0434\u043E\u0441\u0442\u0443\u043F\u043D\u043E\u0441\u0442\u044C \u0438 \u0437\u0430\u043F\u0438\u0441\u044C \u044D\u043A\u0440\u0430\u043D\u0430 \u0434\u043B\u044F \u0435\u0433\u043E \u0438\u0441\u043F\u043E\u043B\u044C\u0437\u043E\u0432\u0430\u043D\u0438\u044F.', 'zh': '\u76EE\u524D\u4EC5\u652F\u6301 macOS\uFF0CWindows \u652F\u6301\u6B63\u5728\u5F00\u53D1\u4E2D\u3002\u4E3A\u5DF2\u6709\u53CA\u65B0\u5EFA PTC \u4F1A\u8BDD\u52A0\u8F7D Computer Use\u3002\u8BF7\u5207\u6362\u5230 PTC \u6A21\u5F0F\u6765\u4F7F\u7528\uFF0C\u5E76\u6388\u4E88\u8F85\u52A9\u529F\u80FD\u548C\u5C4F\u5E55\u5F55\u5236\u6743\u9650\u3002' },
+      icon: 'data:image/svg+xml;base64,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',
+    },
+  },
 ]
diff --git a/packages/util/official-bundles/src/index.ts b/packages/util/official-bundles/src/index.ts
index 433ff321a4..e84033d6f0 100644
--- a/packages/util/official-bundles/src/index.ts
+++ b/packages/util/official-bundles/src/index.ts
@@ -17,6 +17,8 @@ export interface OfficialBundleCatalogEntry {
   readonly packageName: string
   /** Package-owned Host platform declaration, available before installation. */
   readonly platforms?: DshBundleManifest['platforms']
+  /** Package-owned discovery visibility before installation. */
+  readonly listedByDefault?: boolean
   /** Package-owned localized text and a self-contained icon, embedded without provider code. */
   readonly meta: Required<Pick<PluginLocalizedMeta, 'title' | 'description' | 'icon'>>
 }
diff --git a/packages/util/official-bundles/src/plugin-manager.ts b/packages/util/official-bundles/src/plugin-manager.ts
index 186fe3fd60..48f866a748 100644
--- a/packages/util/official-bundles/src/plugin-manager.ts
+++ b/packages/util/official-bundles/src/plugin-manager.ts
@@ -76,4 +76,5 @@ export const EXPERIMENTAL_BUNDLES: ReadonlySet<string> = new Set([
   '@deepseek-ai/dsh-experimental-badge-skill-bundle',
   '@deepseek-ai/dsh-experimental-ralph-bundle',
   '@deepseek-ai/dsh-experimental-plugin-market-bundle',
+  '@deepseek-ai/dsh-experimental-liveshare',
 ])
diff --git a/packages/util/official-bundles/tests/official-bundles.spec.ts b/packages/util/official-bundles/tests/official-bundles.spec.ts
index 716355ffe6..bffbafcaed 100644
--- a/packages/util/official-bundles/tests/official-bundles.spec.ts
+++ b/packages/util/official-bundles/tests/official-bundles.spec.ts
@@ -4,8 +4,10 @@ import { describe, expect, it } from 'vitest'
 import { OFFICIAL_ON_DEMAND_CATALOG, ON_DEMAND_BUNDLES, PROFILE_TEMPLATES } from '../src/index.ts'
 
 describe('Official on-demand catalog', () => {
-  it('offers exactly the two native subagent integrations with offline localized metadata', () => {
-    expect(ON_DEMAND_BUNDLES).toEqual(['@deepseek-ai/dsh-subagent-claude-code', '@deepseek-ai/dsh-subagent-codex'])
+  it('offers native subagents and default-hidden Computer Use with offline metadata', () => {
+    expect(ON_DEMAND_BUNDLES).toEqual(['@deepseek-ai/dsh-subagent-claude-code', '@deepseek-ai/dsh-subagent-codex', '@deepseek-ai/dsh-cua-bundle'])
+    expect(OFFICIAL_ON_DEMAND_CATALOG.find(entry => entry.packageName === '@deepseek-ai/dsh-cua-bundle'))
+      .toMatchObject({ platforms: ['darwin'], listedByDefault: false })
     expect(OFFICIAL_ON_DEMAND_CATALOG.map(entry => entry.packageName)).toEqual(ON_DEMAND_BUNDLES)
     for (const entry of OFFICIAL_ON_DEMAND_CATALOG) {
       expect(entry.meta.icon).toMatch(/^data:image\/svg\+xml;base64,/)
diff --git a/packages/util/output-retention/package.json b/packages/util/output-retention/package.json
index 765677c1c7..e42357c89d 100644
--- a/packages/util/output-retention/package.json
+++ b/packages/util/output-retention/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-output-retention",
   "description": "Zero-dependency bounded-retention primitive: ItemRetainer/TextRetainer + neutral notice helpers (what did we keep, what did we omit)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/package-manifest/package.json b/packages/util/package-manifest/package.json
index 87c4ecd867..2e6919ddd7 100644
--- a/packages/util/package-manifest/package.json
+++ b/packages/util/package-manifest/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-package-manifest",
   "description": "Shared type declarations for package.json.dsh configuration fields",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/plugin-detail/package.json b/packages/util/plugin-detail/package.json
index f91fb857a5..5466fafe7c 100644
--- a/packages/util/plugin-detail/package.json
+++ b/packages/util/plugin-detail/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-plugin-detail",
   "description": "Plugin detail documents: meta.detail or README selection, image paths, and local and npm CDN file sources",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/plugin-market-index/package.json b/packages/util/plugin-market-index/package.json
index c544b39ba7..46c64b536b 100644
--- a/packages/util/plugin-market-index/package.json
+++ b/packages/util/plugin-market-index/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-plugin-market-index",
   "description": "Plugin market index format 1: JSON validation, relative icon resolution, and pinned install arguments",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/time/package.json b/packages/util/time/package.json
index 78100933e6..dd811ef237 100644
--- a/packages/util/time/package.json
+++ b/packages/util/time/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-util-time",
   "description": "Time vocabulary shared by the boundaries that accept a caller's zone, a wall-clock selector, or an elapsed time: canonicalClientTimeZone (IANA zone validation and canonicalization), strict RFC 3339 instant, local-calendar, and zone resolution, and a millisecond Duration span",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/timeout/package.json b/packages/util/timeout/package.json
index 3fba36489c..9df27c9802 100644
--- a/packages/util/timeout/package.json
+++ b/packages/util/timeout/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-timeout",
   "description": "Zero-dependency timeout/deadline primitive: clampTimeout, deadline, timeoutOf, TimeoutReason (timing + classification only, no termination)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/values/README.i18n.yaml b/packages/util/values/README.i18n.yaml
index d840a3b0f3..91617636a4 100644
--- a/packages/util/values/README.i18n.yaml
+++ b/packages/util/values/README.i18n.yaml
@@ -30,8 +30,8 @@
   en: f21b7bd8040a72eb
   zh: 19548d3e537c0b5b
 /deepseek-ai-dsh-util-values/understand-the-implementation:
-  en: 36866610a9a7f898
-  zh: aa2f0e4c3cc12335
+  en: 191b5a3d906e4957
+  zh: b9cf264bf8c0674b
 /deepseek-ai-dsh-util-values/understand-the-implementation/source-map:
   en: 761d4e5f1a53f6a0
   zh: 00ae8492171028e4
diff --git a/packages/util/values/README.md b/packages/util/values/README.md
index 101e1b7332..07b4fc8802 100644
--- a/packages/util/values/README.md
+++ b/packages/util/values/README.md
@@ -61,7 +61,7 @@ Use `assertNever(value, context?)` in the default branch of a closed discriminat
 <details>
 <summary>Implementation internals — click to expand</summary>
 
-The JSON validator uses an explicit work stack and tracks only the active ancestor chain, so deeply nested values do not consume the JavaScript call stack and repeated non-cyclic references remain valid. Intrinsic arrays and plain objects are recognized across JavaScript realms using native constructor representations from the running engine. Snapshot writes use own data properties, including for names such as `__proto__`. Value operations derive their result only from their arguments; `WeakMapWithValues` stores only instance-owned associations.
+The JSON validator keeps one cursor per active container, reads one child at a time, and tracks only the active ancestor chain, so deeply nested values do not consume the JavaScript call stack and repeated non-cyclic references remain valid. Intrinsic arrays and plain objects are recognized across JavaScript realms using native constructor representations from the running engine. Snapshot writes use own data properties, including for names such as `__proto__`. Value operations derive their result only from their arguments; `WeakMapWithValues` stores only instance-owned associations.
 
 ### Source map
 
diff --git a/packages/util/values/README.zh.md b/packages/util/values/README.zh.md
index 5b5e6ee9b1..01e306bfe5 100644
--- a/packages/util/values/README.zh.md
+++ b/packages/util/values/README.zh.md
@@ -61,7 +61,7 @@ const snapshot = snapshotJsonValue(input) as JsonValue
 <details>
 <summary>实现细节——点击展开</summary>
 
-JSON 校验器使用显式工作栈，并只跟踪当前祖先链，因此深层嵌套值不会消耗 JavaScript 调用栈，重复但无循环的引用仍然有效。内建数组与普通对象通过当前引擎的原生构造器文本表示进行跨 JavaScript realm 识别。快照写入使用自有数据属性，包括 `__proto__` 等名称。值操作的结果只取决于传入参数；`WeakMapWithValues` 仅保存实例自有的关联。
+JSON 校验器为每个正在遍历的容器保留一个位置，每次读取一个子项，并只跟踪当前祖先链，因此深层嵌套值不会消耗 JavaScript 调用栈，重复但无循环的引用仍然有效。内建数组与普通对象通过当前引擎的原生构造器文本表示进行跨 JavaScript realm 识别。快照写入使用自有数据属性，包括 `__proto__` 等名称。值操作的结果只取决于传入参数；`WeakMapWithValues` 仅保存实例自有的关联。
 
 ### 源码地图
 
diff --git a/packages/util/values/package.json b/packages/util/values/package.json
index b240388706..8840aaacc3 100644
--- a/packages/util/values/package.json
+++ b/packages/util/values/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-util-values",
   "description": "Duplicate-install-safe value primitives for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/util/values/src/index.ts b/packages/util/values/src/index.ts
index 8664da7e34..b6488245de 100644
--- a/packages/util/values/src/index.ts
+++ b/packages/util/values/src/index.ts
@@ -57,29 +57,23 @@ function enumerableStringKeys(value: object): string[] | undefined {
   return keys as string[]
 }
 
-type SnapshotDestination =
-  | { kind: 'root' }
-  | { kind: 'array'; target: JsonValue[]; index: number }
-  | { kind: 'object'; target: { [key: string]: JsonValue }; key: string }
-
-type JsonWalkTask =
-  | { kind: 'visit'; value: unknown; destination?: SnapshotDestination }
-  | { kind: 'array-item'; source: unknown[]; index: number; target?: JsonValue[] }
-  | { kind: 'object-property'; source: Record<string, unknown>; key: string; target?: { [key: string]: JsonValue } }
-  | { kind: 'leave'; source: object }
+/** One active container, with child reads in its captured key or index order. */
+type JsonWalkFrame =
+  | { kind: 'array'; source: unknown[]; length: number; index: number; key: number; indices: number[] | undefined; target: JsonValue[] | undefined }
+  | { kind: 'object'; source: Record<string, unknown>; keys: string[]; index: number; key: string; target: { [key: string]: JsonValue } | undefined }
 
 /** Validate lossless JSON iteratively, optionally materializing a detached snapshot. */
 function walkJsonValue(value: unknown, detach: boolean): JsonValue | true | undefined {
   const ancestors = new Set<object>()
   let root: JsonValue | undefined
-  const assign = (destination: SnapshotDestination | undefined, item: JsonValue): void => {
-    if (destination === undefined) return
-    if (destination.kind === 'root') {
-      root = item
-    } else if (destination.kind === 'array') {
-      destination.target[destination.index] = item
-    } else {
-      Object.defineProperty(destination.target, destination.key, {
+  let parent: JsonWalkFrame | undefined
+  const assign = (item: JsonValue): void => {
+    if (parent === undefined) {
+      if (detach) root = item
+    } else if (parent.kind === 'array') {
+      if (parent.target !== undefined) parent.target[parent.key] = item
+    } else if (parent.target !== undefined) {
+      Object.defineProperty(parent.target, parent.key, {
         value: item,
         enumerable: true,
         configurable: true,
@@ -88,80 +82,71 @@ function walkJsonValue(value: unknown, detach: boolean): JsonValue | true | unde
     }
   }
 
-  const tasks: JsonWalkTask[] = [{
-    kind: 'visit',
-    value,
-    ...(detach ? { destination: { kind: 'root' } as const } : {}),
-  }]
-  for (let task = tasks.pop(); task !== undefined; task = tasks.pop()) {
-    if (task.kind === 'leave') {
-      ancestors.delete(task.source)
-      continue
-    }
-    if (task.kind === 'array-item') {
-      if (!Object.prototype.hasOwnProperty.call(task.source, task.index)) return undefined
-      tasks.push({
-        kind: 'visit',
-        value: task.source[task.index],
-        ...(task.target === undefined ? {} : { destination: { kind: 'array', target: task.target, index: task.index } as const }),
-      })
-      continue
-    }
-    if (task.kind === 'object-property') {
-      tasks.push({
-        kind: 'visit',
-        value: task.source[task.key],
-        ...(task.target === undefined ? {} : { destination: { kind: 'object', target: task.target, key: task.key } as const }),
-      })
-      continue
-    }
-
-    const current = task.value
+  const frames: JsonWalkFrame[] = []
+  let current: unknown = value
+  for (;;) {
     if (current === null) {
-      assign(task.destination, null)
-      continue
-    }
-    if (typeof current === 'boolean' || typeof current === 'string') {
-      assign(task.destination, current)
-      continue
-    }
-    if (typeof current === 'number') {
+      assign(null)
+    } else if (typeof current === 'boolean' || typeof current === 'string') {
+      assign(current)
+    } else if (typeof current === 'number') {
       if (!Number.isFinite(current) || Object.is(current, -0)) return undefined
-      assign(task.destination, current)
-      continue
-    }
-    if (typeof current !== 'object') return undefined
-    if (ancestors.has(current)) return undefined
-
-    if (Array.isArray(current)) {
-      if (!hasPlainArrayPrototype(current)) return undefined
-      const length = current.length
-      if (Reflect.ownKeys(current).length !== length + 1) return undefined
-      const target = detach ? [] as JsonValue[] : undefined
-      if (target !== undefined) assign(task.destination, target)
-      ancestors.add(current)
-      tasks.push({ kind: 'leave', source: current })
-      for (let index = length - 1; index >= 0; index--) {
-        tasks.push({ kind: 'array-item', source: current, index, ...(target === undefined ? {} : { target }) })
+      assign(current)
+    } else {
+      if (typeof current !== 'object') return undefined
+      if (ancestors.has(current)) return undefined
+      if (Array.isArray(current)) {
+        if (!hasPlainArrayPrototype(current)) return undefined
+        const length = current.length
+        if (Reflect.ownKeys(current).length !== length + 1) return undefined
+        const target = detach ? [] as JsonValue[] : undefined
+        if (target !== undefined) assign(target)
+        let indices: number[] | undefined
+        if (!Number.isInteger(length)) {
+          // Capture indices with one subtraction for fractional or coercible Proxy lengths.
+          indices = []
+          for (let index = length - 1; index >= 0; index--) indices.push(index)
+        }
+        frames.push({ kind: 'array', source: current, length: indices?.length ?? length, index: 0, key: 0, indices, target })
+      } else {
+        if (!hasPlainObjectPrototype(current)) return undefined
+        const keys = enumerableStringKeys(current)
+        if (keys === undefined) return undefined
+        const target = detach ? {} as { [key: string]: JsonValue } : undefined
+        if (target !== undefined) assign(target)
+        frames.push({ kind: 'object', source: current as Record<string, unknown>, keys, index: 0, key: '', target })
       }
-      continue
+      ancestors.add(current)
     }
 
-    if (!hasPlainObjectPrototype(current)) return undefined
-    const keys = enumerableStringKeys(current)
-    if (keys === undefined) return undefined
-    const target = detach ? {} as { [key: string]: JsonValue } : undefined
-    if (target !== undefined) assign(task.destination, target)
-    ancestors.add(current)
-    tasks.push({ kind: 'leave', source: current })
-    for (let index = keys.length - 1; index >= 0; index--) {
-      const key = keys[index]
-      /* v8 ignore next -- the loop is bounded by the captured key count. */
-      if (key === undefined) return undefined
-      tasks.push({ kind: 'object-property', source: current as Record<string, unknown>, key, ...(target === undefined ? {} : { target }) })
+    for (;;) {
+      const frame = frames.at(-1)
+      if (frame === undefined) return detach ? root : true
+      const length = frame.kind === 'array' ? frame.length : frame.keys.length
+      if (frame.index >= length) {
+        ancestors.delete(frame.source)
+        frames.pop()
+        continue
+      }
+      const index = frame.index++
+      parent = frame
+      if (frame.kind === 'array') {
+        const key = frame.indices === undefined ? index : frame.indices[frame.indices.length - index - 1]
+        /* v8 ignore next -- the loop is bounded by the captured index count. */
+        if (key === undefined) return undefined
+        if (!Object.prototype.hasOwnProperty.call(frame.source, key)) return undefined
+        frame.key = key
+        current = frame.source[key]
+      } else {
+        const key = frame.keys[index]
+        /* v8 ignore next -- the loop is bounded by the captured key count. */
+        if (key === undefined) return undefined
+        frame.key = key
+        current = frame.source[key]
+      }
+      break
     }
   }
-  return detach ? root : true
 }
 
 /**
diff --git a/packages/util/workspace-path/package.json b/packages/util/workspace-path/package.json
index 89a3293070..07a5a34c3b 100644
--- a/packages/util/workspace-path/package.json
+++ b/packages/util/workspace-path/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-util-workspace-path",
   "description": "Browser-safe Workspace path and display helpers",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/web/tool-web/package.json b/packages/web/tool-web/package.json
index 1edd32e2ea..a00e90a14c 100644
--- a/packages/web/tool-web/package.json
+++ b/packages/web/tool-web/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-web",
   "description": "Model-facing web tools (web_search, web_fetch) over the DeepSeek Harness web capability seam (ctx.web)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/web/web-deepseek-api/package.json b/packages/web/web-deepseek-api/package.json
index f6c2878356..ebaf9e867e 100644
--- a/packages/web/web-deepseek-api/package.json
+++ b/packages/web/web-deepseek-api/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-web-deepseek-api",
   "description": "DeepSeek Search and Fetch API providers for the DeepSeek Harness web capability seam (ctx.web)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/web/web-fetch-http/package.json b/packages/web/web-fetch-http/package.json
index 22fac7da7e..a131534395 100644
--- a/packages/web/web-fetch-http/package.json
+++ b/packages/web/web-fetch-http/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-web-fetch-http",
   "description": "Anonymous HTTP(S) fetch provider for the DeepSeek Harness web capability seam (ctx.web)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/web/web-search-deepseek/package.json b/packages/web/web-search-deepseek/package.json
index 3384720d97..c61771efe6 100644
--- a/packages/web/web-search-deepseek/package.json
+++ b/packages/web/web-search-deepseek/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-web-search-deepseek",
   "description": "DeepSeek-backed search provider (native web_search via the Anthropic-compatible API) for the DeepSeek Harness web capability seam (ctx.web)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/web/web-search-exa/package.json b/packages/web/web-search-exa/package.json
index 961c4e07c5..9fead6e7e3 100644
--- a/packages/web/web-search-exa/package.json
+++ b/packages/web/web-search-exa/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-web-search-exa",
   "description": "Exa-backed search provider for the DeepSeek Harness web capability seam (ctx.web)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/web/web-search-perplexity/package.json b/packages/web/web-search-perplexity/package.json
index 56cd2f5d73..93d3dfd555 100644
--- a/packages/web/web-search-perplexity/package.json
+++ b/packages/web/web-search-perplexity/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-web-search-perplexity",
   "description": "Perplexity-backed search provider for the DeepSeek Harness web capability seam (ctx.web)",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/web/web/package.json b/packages/web/web/package.json
index 4f6a7ba373..4edfbfa6dc 100644
--- a/packages/web/web/package.json
+++ b/packages/web/web/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-web",
   "description": "Abstract web access capability seam (ctx.web) for the DeepSeek Harness — search/fetch provider registry, registration-order-independent selection, request/result vocabulary, and the WebError taxonomy",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/workflow/tool-workflow/package.json b/packages/workflow/tool-workflow/package.json
index 106cd75fcb..e49888f544 100644
--- a/packages/workflow/tool-workflow/package.json
+++ b/packages/workflow/tool-workflow/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-tool-workflow",
   "description": "Model-facing workflow tool: run a JavaScript orchestration script over ctx.workflowEngine",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/workflow/workflow-ptc/package.json b/packages/workflow/workflow-ptc/package.json
index 82a93aeb18..f67f9faed0 100644
--- a/packages/workflow/workflow-ptc/package.json
+++ b/packages/workflow/workflow-ptc/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-workflow-ptc",
   "description": "Workflow orchestration in the shared sandboxed Node PTC runtime",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/workflow/workflow-ptc/src/guest-source.ts b/packages/workflow/workflow-ptc/src/guest-source.ts
index 6174a32043..b810c95033 100644
--- a/packages/workflow/workflow-ptc/src/guest-source.ts
+++ b/packages/workflow/workflow-ptc/src/guest-source.ts
@@ -1,4 +1,4 @@
 /** Generated by scripts/gen-workflow-guest.ts. Do not edit directly. */
 
 /** Self-contained ESM guest transported into the mounted PTC runtime. */
-export const WORKFLOW_GUEST_SOURCE = "import * as vm from \"node:vm\";\n//#region packages/workflow/workflow-ptc/src/realm.ts\n/**\n* Materializes script VM values as plain JSON and renders thrown values.\n* Getters and proxy traps may execute inside the confined Node process;\n* process isolation and cancellation belong to PTC, not the VM.\n* @module @deepseek-ai/dsh-workflow-ptc/realm\n*/\n/** Thrown by {@link materializeFromRealm}; the caller wraps it into the right `WorkflowError` code. */\nvar MaterializeError = class extends Error {\n\tpath;\n\treason;\n\tconstructor(path, reason) {\n\t\tsuper(`${path}: ${reason}`);\n\t\tthis.path = path;\n\t\tthis.reason = reason;\n\t\tthis.name = \"MaterializeError\";\n\t}\n};\n/**\n* Render a thrown value to failure text without ever throwing: prefer the\n* `stack` (host or realm — a realm error's `stack` is a plain string read),\n* fall back to `message`, then `String()`. Reading those properties MAY run\n* script code; if that code itself throws, a fixed label is returned instead.\n* @param error - any value thrown in the host or guest realm.\n* @returns human-readable text for the failure report; prefers the stack.\n*/\nfunction renderThrown(error) {\n\ttry {\n\t\tconst stack = error?.stack;\n\t\tif (typeof stack === \"string\" && stack.length > 0) return stack;\n\t\tconst message = error?.message;\n\t\tif (typeof message === \"string\" && message.length > 0) return message;\n\t\treturn String(error);\n\t} catch {\n\t\treturn \"[unrenderable thrown value]\";\n\t}\n}\n/**\n* Whether an object's prototype chain represents a plain data object: `null`, or a prototype\n* whose own prototype is `null` (the realm's `Object.prototype` — which we\n* cannot compare by identity across realms). A `Date`/`Map`/class instance\n* has a longer chain and is rejected.\n*/\nfunction hasPlainPrototype(value) {\n\tconst proto = Object.getPrototypeOf(value);\n\tif (proto === null) return true;\n\treturn Object.getPrototypeOf(proto) === null;\n}\n/**\n* Copy `value` (typically from the vm realm) into plain host JSON data. Root `undefined` is\n* returned unchanged; nested `undefined` and values JSON cannot represent losslessly fail\n* with the offending path. Property accessors run normally, and a throwing read is wrapped\n* with its rendered failure.\n*\n* @param value - the realm value to materialize.\n* @param root - the path label for the root value (error messages).\n* @returns the host-realm copy (plain objects/arrays/scalars only).\n* @throws {@link MaterializeError} for unsupported values, cycles, sparse arrays, exotic\n*   prototypes, or property reads that throw.\n*/\nfunction materializeFromRealm(value, root = \"value\") {\n\tif (value === void 0) return void 0;\n\ttry {\n\t\treturn materialize(value, root, /* @__PURE__ */ new Set());\n\t} catch (error) {\n\t\tif (error instanceof MaterializeError) throw error;\n\t\tthrow new MaterializeError(root, `reading the value threw: ${renderThrown(error)}`);\n\t}\n}\nfunction materialize(value, path, seen) {\n\tswitch (typeof value) {\n\t\tcase \"boolean\":\n\t\tcase \"string\": return value;\n\t\tcase \"number\":\n\t\t\tif (!Number.isFinite(value)) throw new MaterializeError(path, \"non-finite numbers are not JSON data\");\n\t\t\treturn value;\n\t\tcase \"bigint\": throw new MaterializeError(path, \"bigints are not JSON data\");\n\t\tcase \"function\": throw new MaterializeError(path, \"functions are not plain JSON data\");\n\t\tcase \"symbol\": throw new MaterializeError(path, \"symbols are not plain JSON data\");\n\t\tcase \"undefined\": throw new MaterializeError(path, \"undefined is not JSON data\");\n\t\tcase \"object\": break;\n\t}\n\tif (value === null) return null;\n\tconst objectValue = value;\n\tif (seen.has(objectValue)) throw new MaterializeError(path, \"circular references are not JSON data\");\n\tseen.add(objectValue);\n\ttry {\n\t\tif (Array.isArray(objectValue)) return materializeArray(objectValue, path, seen);\n\t\treturn materializeObject(objectValue, path, seen);\n\t} finally {\n\t\tseen.delete(objectValue);\n\t}\n}\nfunction materializeArray(value, path, seen) {\n\tconst out = [];\n\tfor (let index = 0; index < value.length; index++) {\n\t\tif (!(index in value)) throw new MaterializeError(`${path}[${index}]`, \"sparse arrays are not JSON data\");\n\t\tout.push(materialize(value[index], `${path}[${index}]`, seen));\n\t}\n\tfor (const key of Object.keys(value)) {\n\t\tconst index = Number(key);\n\t\tif (!Number.isInteger(index) || index < 0 || index >= value.length) throw new MaterializeError(`${path}.${key}`, \"arrays with non-index properties are not JSON data\");\n\t}\n\tif (Object.getOwnPropertySymbols(value).length > 0) throw new MaterializeError(path, \"symbol-keyed properties are not plain JSON data\");\n\treturn out;\n}\nfunction materializeObject(value, path, seen) {\n\tif (!hasPlainPrototype(value)) throw new MaterializeError(path, \"only plain objects and arrays are JSON data (exotic prototype)\");\n\tif (Object.getOwnPropertySymbols(value).length > 0) throw new MaterializeError(path, \"symbol-keyed properties are not plain JSON data\");\n\tconst out = {};\n\tfor (const key of Object.keys(value)) Object.defineProperty(out, key, {\n\t\tvalue: materialize(value[key], `${path}.${key}`, seen),\n\t\tenumerable: true,\n\t\twritable: true,\n\t\tconfigurable: true\n\t});\n\treturn out;\n}\n//#endregion\n//#region packages/util/brand/src/index.ts\n/**\n* Apply a compile-time string brand without changing the value.\n* @param value - string admitted by the domain that owns the target brand.\n* @returns the same string with the requested compile-time brand.\n*/\nfunction brandString(value) {\n\treturn value;\n}\n//#endregion\n//#region packages/llm/llm/src/error.ts\n/**\n* Harness error base with a stable machine-routable code and chained cause.\n* Package errors extend it so tool results and replay can retain failure class.\n* @module @deepseek-ai/dsh-llm/error\n*/\n/**\n* Base class for all harness errors. Carries a `code` (stable, programmatic —\n* e.g. `NO_ADAPTER`, `INVALID_ARGS`) distinct from the\n* human-readable `message`, and supports `cause` chaining via the standard\n* `ErrorOptions`. `name` defaults to the subclass constructor name.\n*/\nvar HarnessError = class extends Error {\n\t/** Stable machine-routable failure class (e.g. `RATE_LIMIT`); route on this, never by parsing `message`. */\n\tcode;\n\tconstructor(message, code, options) {\n\t\tsuper(message, options);\n\t\tthis.code = code;\n\t\tthis.name = new.target.name;\n\t}\n};\nnew RegExp(String.raw`(?:^|[^a-z0-9])context[\\s_-](?:length|window)[\\s_-]` + String.raw`(?:exceed(?:ed|s)?|overflow(?:ed)?|limit[\\s_-]exceeded)(?:$|[^a-z0-9])`, \"i\");\nnew RegExp(String.raw`\\b(?:request|prompt|input|messages?)\\s+(?:is\\s+|are\\s+)?` + String.raw`too\\s+(?:large|long)\\s+for\\s+(?:(?:this|the)\\s+)?` + String.raw`(?:model(?:'s)?\\s+)?context(?:\\s+window)?\\b`, \"i\");\nnew RegExp(String.raw`\\b(?:input|prompt|request|messages?)\\b.{0,40}` + String.raw`\\b(?:exceed(?:s|ed)?|overflows?|is\\s+larger\\s+than)\\b.{0,40}` + String.raw`\\b(?:the\\s+)?(?:model(?:'s)?\\s+)?context(?:\\s+(?:length|window))?\\b`, \"i\");\n//#endregion\n//#region packages/util/values/src/index.ts\n/**\n* Mark an unreachable closed-union branch.\n* @param value - impossible value; an unhandled typed variant fails at the call site.\n* @param context - optional switch-site label included in the failure message.\n* @returns never; a runtime value that escaped its type always throws.\n*/\nfunction assertNever(value, context) {\n\tconst rendered = JSON.stringify(value) ?? String(value);\n\tthrow new Error(`unreachable variant${context ? ` in ${context}` : \"\"}: ${rendered}`);\n}\n/** Whether a realm-owned intrinsic prototype has a native constructor matching this engine's representation. */\nfunction hasIntrinsicConstructor$1(prototype, name) {\n\tconst constructor = Object.getOwnPropertyDescriptor(prototype, \"constructor\")?.value;\n\tif (typeof constructor !== \"function\") return false;\n\ttry {\n\t\treturn constructor.name === name && constructor.prototype === prototype && Function.prototype.toString.call(constructor) === Function.prototype.toString.call(name === \"Array\" ? Array : Object);\n\t} catch {\n\t\treturn false;\n\t}\n}\n/** Whether a candidate is one realm's intrinsic `Object.prototype`. */\nfunction isIntrinsicObjectPrototype$1(value) {\n\treturn Object.getPrototypeOf(value) === null && hasIntrinsicConstructor$1(value, \"Object\");\n}\n/** Whether an array uses one realm's intrinsic `Array.prototype`, not a subclass or forged prototype. */\nfunction hasPlainArrayPrototype$1(value) {\n\tconst prototype = Object.getPrototypeOf(value);\n\tif (!Array.isArray(prototype) || !hasIntrinsicConstructor$1(prototype, \"Array\")) return false;\n\tconst objectPrototype = Object.getPrototypeOf(prototype);\n\treturn typeof objectPrototype === \"object\" && objectPrototype !== null && isIntrinsicObjectPrototype$1(objectPrototype);\n}\n/** Whether an object is a plain or null-prototype record from any JavaScript realm. */\nfunction hasPlainObjectPrototype(value) {\n\tconst prototype = Object.getPrototypeOf(value);\n\treturn prototype === null || typeof prototype === \"object\" && isIntrinsicObjectPrototype$1(prototype);\n}\n/** Return every JSON-visible object key, or reject own data JSON would discard. */\nfunction enumerableStringKeys(value) {\n\tconst keys = Reflect.ownKeys(value);\n\tif (keys.some((key) => typeof key !== \"string\" || !Object.prototype.propertyIsEnumerable.call(value, key))) return void 0;\n\treturn keys;\n}\n/** Validate lossless JSON iteratively, optionally materializing a detached snapshot. */\nfunction walkJsonValue(value, detach) {\n\tconst ancestors = /* @__PURE__ */ new Set();\n\tlet root;\n\tconst assign = (destination, item) => {\n\t\tif (destination === void 0) return;\n\t\tif (destination.kind === \"root\") root = item;\n\t\telse if (destination.kind === \"array\") destination.target[destination.index] = item;\n\t\telse Object.defineProperty(destination.target, destination.key, {\n\t\t\tvalue: item,\n\t\t\tenumerable: true,\n\t\t\tconfigurable: true,\n\t\t\twritable: true\n\t\t});\n\t};\n\tconst tasks = [{\n\t\tkind: \"visit\",\n\t\tvalue,\n\t\t...detach ? { destination: { kind: \"root\" } } : {}\n\t}];\n\tfor (let task = tasks.pop(); task !== void 0; task = tasks.pop()) {\n\t\tif (task.kind === \"leave\") {\n\t\t\tancestors.delete(task.source);\n\t\t\tcontinue;\n\t\t}\n\t\tif (task.kind === \"array-item\") {\n\t\t\tif (!Object.prototype.hasOwnProperty.call(task.source, task.index)) return void 0;\n\t\t\ttasks.push({\n\t\t\t\tkind: \"visit\",\n\t\t\t\tvalue: task.source[task.index],\n\t\t\t\t...task.target === void 0 ? {} : { destination: {\n\t\t\t\t\tkind: \"array\",\n\t\t\t\t\ttarget: task.target,\n\t\t\t\t\tindex: task.index\n\t\t\t\t} }\n\t\t\t});\n\t\t\tcontinue;\n\t\t}\n\t\tif (task.kind === \"object-property\") {\n\t\t\ttasks.push({\n\t\t\t\tkind: \"visit\",\n\t\t\t\tvalue: task.source[task.key],\n\t\t\t\t...task.target === void 0 ? {} : { destination: {\n\t\t\t\t\tkind: \"object\",\n\t\t\t\t\ttarget: task.target,\n\t\t\t\t\tkey: task.key\n\t\t\t\t} }\n\t\t\t});\n\t\t\tcontinue;\n\t\t}\n\t\tconst current = task.value;\n\t\tif (current === null) {\n\t\t\tassign(task.destination, null);\n\t\t\tcontinue;\n\t\t}\n\t\tif (typeof current === \"boolean\" || typeof current === \"string\") {\n\t\t\tassign(task.destination, current);\n\t\t\tcontinue;\n\t\t}\n\t\tif (typeof current === \"number\") {\n\t\t\tif (!Number.isFinite(current) || Object.is(current, -0)) return void 0;\n\t\t\tassign(task.destination, current);\n\t\t\tcontinue;\n\t\t}\n\t\tif (typeof current !== \"object\") return void 0;\n\t\tif (ancestors.has(current)) return void 0;\n\t\tif (Array.isArray(current)) {\n\t\t\tif (!hasPlainArrayPrototype$1(current)) return void 0;\n\t\t\tconst length = current.length;\n\t\t\tif (Reflect.ownKeys(current).length !== length + 1) return void 0;\n\t\t\tconst target = detach ? [] : void 0;\n\t\t\tif (target !== void 0) assign(task.destination, target);\n\t\t\tancestors.add(current);\n\t\t\ttasks.push({\n\t\t\t\tkind: \"leave\",\n\t\t\t\tsource: current\n\t\t\t});\n\t\t\tfor (let index = length - 1; index >= 0; index--) tasks.push({\n\t\t\t\tkind: \"array-item\",\n\t\t\t\tsource: current,\n\t\t\t\tindex,\n\t\t\t\t...target === void 0 ? {} : { target }\n\t\t\t});\n\t\t\tcontinue;\n\t\t}\n\t\tif (!hasPlainObjectPrototype(current)) return void 0;\n\t\tconst keys = enumerableStringKeys(current);\n\t\tif (keys === void 0) return void 0;\n\t\tconst target = detach ? {} : void 0;\n\t\tif (target !== void 0) assign(task.destination, target);\n\t\tancestors.add(current);\n\t\ttasks.push({\n\t\t\tkind: \"leave\",\n\t\t\tsource: current\n\t\t});\n\t\tfor (let index = keys.length - 1; index >= 0; index--) {\n\t\t\tconst key = keys[index];\n\t\t\t/* v8 ignore next -- the loop is bounded by the captured key count. */\n\t\t\tif (key === void 0) return void 0;\n\t\t\ttasks.push({\n\t\t\t\tkind: \"object-property\",\n\t\t\t\tsource: current,\n\t\t\t\tkey,\n\t\t\t\t...target === void 0 ? {} : { target }\n\t\t\t});\n\t\t}\n\t}\n\treturn detach ? root : true;\n}\n/**\n* Test the same lossless JSON rules as {@link snapshotJsonValue} without detaching the value.\n* @param value - candidate value to test.\n* @returns whether the value survives a JSON round trip without loss.\n*/\nfunction isJsonValue(value) {\n\treturn walkJsonValue(value, false) === true;\n}\n//#endregion\n//#region packages/core/tools/src/json-schema.ts\n/**\n* Enforced JSON Schema subset shared by tool outputs, generated PTC mode\n* types, subagents, and workflows. The subset accepts any JSON root, an\n* annotation-only schema for unconstrained JSON, one scalar `type`, object\n* `properties`/`required`/boolean `additionalProperties`, array `items`,\n* type-correct scalar `enum`/`const`, and exact-one `oneOf`.\n*\n* Unsupported or misplaced keywords reject rather than being accepted without\n* enforcement. Consumers that require an object root apply\n* {@link assertObjectJsonSchema} before accepting input.\n* @module dsh-tools/json-schema\n*/\n/**\n* Thrown when a raw schema falls outside the enforced subset. `violations`\n* lists every offending path instead of stopping at the first author error.\n*/\nvar JsonSchemaError = class extends HarnessError {\n\t/** Individual schema violations in walk order. */\n\tviolations;\n\tconstructor(violations) {\n\t\tsuper(`unsupported JSON schema: ${violations.join(\"; \")}`, \"UNSUPPORTED_SCHEMA\");\n\t\tthis.name = \"JsonSchemaError\";\n\t\tthis.violations = violations;\n\t}\n};\nconst CONSTRAINT_KEYWORDS = new Set([\n\t\"type\",\n\t\"oneOf\",\n\t\"properties\",\n\t\"required\",\n\t\"additionalProperties\",\n\t\"items\",\n\t\"enum\",\n\t\"const\"\n]);\nconst ANNOTATION_KEYWORDS = new Set([\n\t\"description\",\n\t\"title\",\n\t\"default\",\n\t\"examples\"\n]);\nconst SCHEMA_TYPES = [\n\t\"object\",\n\t\"array\",\n\t\"string\",\n\t\"number\",\n\t\"integer\",\n\t\"boolean\",\n\t\"null\"\n];\n/** Whether a realm-owned intrinsic prototype is backed by its native constructor. */\nfunction hasIntrinsicConstructor(prototype, name) {\n\tconst constructor = Object.getOwnPropertyDescriptor(prototype, \"constructor\")?.value;\n\tif (typeof constructor !== \"function\") return false;\n\ttry {\n\t\treturn constructor.name === name && constructor.prototype === prototype && Function.prototype.toString.call(constructor) === `function ${name}() { [native code] }`;\n\t} catch {\n\t\treturn false;\n\t}\n}\n/** Whether a candidate is one realm's intrinsic `Object.prototype`. */\nfunction isIntrinsicObjectPrototype(value) {\n\treturn Object.getPrototypeOf(value) === null && hasIntrinsicConstructor(value, \"Object\");\n}\n/**\n* Test for a realm-agnostic plain JSON record without accepting arrays or\n* exotic objects.\n* @param value - candidate record from any JavaScript realm.\n* @returns Whether the value has a plain-object prototype chain.\n*/\nfunction isPlainJsonRecord(value) {\n\tif (typeof value !== \"object\" || value === null || Array.isArray(value)) return false;\n\ttry {\n\t\tconst prototype = Object.getPrototypeOf(value);\n\t\treturn prototype === null || typeof prototype === \"object\" && isIntrinsicObjectPrototype(prototype);\n\t} catch {\n\t\treturn false;\n\t}\n}\n/** Whether an array uses one realm's intrinsic `Array.prototype`. */\nfunction hasPlainArrayPrototype(value) {\n\tconst prototype = Object.getPrototypeOf(value);\n\tif (!Array.isArray(prototype) || !hasIntrinsicConstructor(prototype, \"Array\")) return false;\n\tconst objectPrototype = Object.getPrototypeOf(prototype);\n\treturn typeof objectPrototype === \"object\" && objectPrototype !== null && isIntrinsicObjectPrototype(objectPrototype);\n}\n/** Return whether a record contains only own enumerable string keys. */\nfunction hasOnlyEnumerableStringKeys(value) {\n\ttry {\n\t\treturn Reflect.ownKeys(value).every((key) => typeof key === \"string\" && Object.prototype.propertyIsEnumerable.call(value, key));\n\t} catch {\n\t\treturn false;\n\t}\n}\n/**\n* Test for an ordinary schema record whose keys survive JSON projection.\n* @param value - candidate record from any JavaScript realm.\n* @returns Whether the record has an intrinsic prototype and only own enumerable string keys.\n*/\nfunction isJsonSchemaRecord(value) {\n\treturn isPlainJsonRecord(value) && hasOnlyEnumerableStringKeys(value);\n}\n/**\n* Test for a dense ordinary array with no JSON-invisible decorations.\n* @param value - candidate array from any JavaScript realm.\n* @returns Whether the array is intrinsic, dense, and undecorated.\n*/\nfunction isPlainJsonArray(value) {\n\tif (!Array.isArray(value)) return false;\n\ttry {\n\t\tif (!hasPlainArrayPrototype(value) || Reflect.ownKeys(value).length !== value.length + 1) return false;\n\t\tfor (let index = 0; index < value.length; index++) if (!Object.hasOwn(value, index)) return false;\n\t\treturn true;\n\t} catch {\n\t\treturn false;\n\t}\n}\n/** Lossless finite JSON number, excluding negative zero. */\nfunction isJsonNumber(value) {\n\treturn typeof value === \"number\" && Number.isFinite(value) && !Object.is(value, -0);\n}\n/** Whether a scalar is valid for one declared schema type. */\nfunction scalarMatches(type, value) {\n\tswitch (type) {\n\t\tcase \"string\": return typeof value === \"string\";\n\t\tcase \"number\": return isJsonNumber(value);\n\t\tcase \"integer\": return isJsonNumber(value) && Number.isInteger(value);\n\t\tcase \"boolean\": return typeof value === \"boolean\";\n\t\tcase \"null\": return value === null;\n\t\t/* v8 ignore next -- JsonSchemaScalarType is closed; this retains compile-time exhaustiveness. */\n\t\tdefault: return assertNever(type, \"JsonSchemaType\");\n\t}\n}\n/** Keywords that are invalid beside `oneOf`. */\nconst ONE_OF_SIBLING_KEYWORDS = [\n\t\"properties\",\n\t\"required\",\n\t\"additionalProperties\",\n\t\"items\",\n\t\"enum\",\n\t\"const\"\n];\n/** Validate object-only fields after its property schemas have been visited. */\nfunction checkObjectSchemaTail(node, path, properties, violations) {\n\tconst hasRequired = Object.hasOwn(node, \"required\");\n\tconst required = hasRequired ? node.required : void 0;\n\tif (hasRequired) if (!isPlainJsonArray(required) || required.some((entry) => typeof entry !== \"string\")) violations.push(`${path}.required must be an array of strings`);\n\telse {\n\t\tconst declared = isJsonSchemaRecord(properties) ? properties : {};\n\t\tfor (const key of required) if (!Object.hasOwn(declared, key)) violations.push(`${path}.required names \"${key}\" which is not in properties`);\n\t}\n\tif (Object.hasOwn(node, \"additionalProperties\") && typeof node.additionalProperties !== \"boolean\") violations.push(`${path}.additionalProperties must be a boolean`);\n}\n/** Collect every violation for one raw schema tree without using the JavaScript call stack. */\nfunction checkSchemaNode(root, rootPath, violations, seen) {\n\tconst tasks = [{\n\t\tkind: \"enter\",\n\t\tnode: root,\n\t\tpath: rootPath\n\t}];\n\tfor (let task = tasks.pop(); task !== void 0; task = tasks.pop()) {\n\t\tif (task.kind === \"leave\") {\n\t\t\tseen.delete(task.node);\n\t\t\tcontinue;\n\t\t}\n\t\tif (task.kind === \"one-of-tail\") {\n\t\t\tfor (const key of ONE_OF_SIBLING_KEYWORDS) if (Object.hasOwn(task.node, key)) violations.push(`${task.path}.${key} is not supported beside oneOf`);\n\t\t\tcontinue;\n\t\t}\n\t\tif (task.kind === \"object-tail\") {\n\t\t\tcheckObjectSchemaTail(task.node, task.path, task.properties, violations);\n\t\t\tcontinue;\n\t\t}\n\t\tconst { node, path } = task;\n\t\tif (!isJsonSchemaRecord(node)) {\n\t\t\tviolations.push(`${path} must be a schema object`);\n\t\t\tcontinue;\n\t\t}\n\t\tif (seen.has(node)) {\n\t\t\tviolations.push(`${path} is circular`);\n\t\t\tcontinue;\n\t\t}\n\t\tseen.add(node);\n\t\ttasks.push({\n\t\t\tkind: \"leave\",\n\t\t\tnode\n\t\t});\n\t\tfor (const key of Object.keys(node)) {\n\t\t\tif (CONSTRAINT_KEYWORDS.has(key)) continue;\n\t\t\tif (ANNOTATION_KEYWORDS.has(key)) {\n\t\t\t\ttry {\n\t\t\t\t\tif (!isJsonValue(node[key])) violations.push(`${path}.${key} annotation must be lossless JSON data`);\n\t\t\t\t} catch {\n\t\t\t\t\tviolations.push(`${path}.${key} annotation must be lossless JSON data`);\n\t\t\t\t}\n\t\t\t\tcontinue;\n\t\t\t}\n\t\t\tviolations.push(`${path}.${key} is not a supported keyword (subset: type/oneOf/properties/required/additionalProperties/items/enum/const + annotations)`);\n\t\t}\n\t\tif (Object.hasOwn(node, \"description\") && typeof node.description !== \"string\") violations.push(`${path}.description must be a string`);\n\t\tif (Object.hasOwn(node, \"title\") && typeof node.title !== \"string\") violations.push(`${path}.title must be a string`);\n\t\tconst hasType = Object.hasOwn(node, \"type\");\n\t\tconst hasOneOf = Object.hasOwn(node, \"oneOf\");\n\t\tif (hasType && hasOneOf) {\n\t\t\tviolations.push(`${path} cannot declare both type and oneOf`);\n\t\t\tcontinue;\n\t\t}\n\t\tif (!hasType && !hasOneOf) {\n\t\t\tfor (const key of ONE_OF_SIBLING_KEYWORDS) if (Object.hasOwn(node, key)) violations.push(`${path}.${key} requires type or oneOf`);\n\t\t\tcontinue;\n\t\t}\n\t\tif (hasOneOf) {\n\t\t\tconst oneOf = node.oneOf;\n\t\t\ttasks.push({\n\t\t\t\tkind: \"one-of-tail\",\n\t\t\t\tnode,\n\t\t\t\tpath\n\t\t\t});\n\t\t\tif (!isPlainJsonArray(oneOf) || oneOf.length < 2) violations.push(`${path}.oneOf must be an array of at least two schemas`);\n\t\t\telse for (let index = oneOf.length - 1; index >= 0; index--) tasks.push({\n\t\t\t\tkind: \"enter\",\n\t\t\t\tnode: oneOf[index],\n\t\t\t\tpath: `${path}.oneOf[${index}]`\n\t\t\t});\n\t\t\tcontinue;\n\t\t}\n\t\tconst type = node.type;\n\t\tif (typeof type !== \"string\" || !SCHEMA_TYPES.includes(type)) {\n\t\t\tviolations.push(Array.isArray(type) ? `${path}.type must be a single type string (type arrays are not supported)` : `${path}.type must be one of ${SCHEMA_TYPES.join(\"/\")}`);\n\t\t\tcontinue;\n\t\t}\n\t\tconst schemaType = type;\n\t\tfor (const [key, types] of Object.entries({\n\t\t\tproperties: [\"object\"],\n\t\t\trequired: [\"object\"],\n\t\t\tadditionalProperties: [\"object\"],\n\t\t\titems: [\"array\"],\n\t\t\tenum: [\n\t\t\t\t\"string\",\n\t\t\t\t\"number\",\n\t\t\t\t\"integer\",\n\t\t\t\t\"boolean\",\n\t\t\t\t\"null\"\n\t\t\t],\n\t\t\tconst: [\n\t\t\t\t\"string\",\n\t\t\t\t\"number\",\n\t\t\t\t\"integer\",\n\t\t\t\t\"boolean\",\n\t\t\t\t\"null\"\n\t\t\t]\n\t\t})) if (Object.hasOwn(node, key) && !types.includes(schemaType)) violations.push(`${path}.${key} is not supported on type \"${schemaType}\"`);\n\t\tswitch (schemaType) {\n\t\t\tcase \"object\": {\n\t\t\t\tconst properties = Object.hasOwn(node, \"properties\") ? node.properties : void 0;\n\t\t\t\ttasks.push({\n\t\t\t\t\tkind: \"object-tail\",\n\t\t\t\t\tnode,\n\t\t\t\t\tpath,\n\t\t\t\t\tproperties\n\t\t\t\t});\n\t\t\t\tif (Object.hasOwn(node, \"properties\")) if (!isJsonSchemaRecord(properties)) violations.push(`${path}.properties must be an object of schemas`);\n\t\t\t\telse {\n\t\t\t\t\tconst entries = Object.entries(properties);\n\t\t\t\t\tfor (let index = entries.length - 1; index >= 0; index--) {\n\t\t\t\t\t\tconst entry = entries[index];\n\t\t\t\t\t\t/* v8 ignore next -- the loop is bounded by the captured entry count. */\n\t\t\t\t\t\tif (entry === void 0) continue;\n\t\t\t\t\t\ttasks.push({\n\t\t\t\t\t\t\tkind: \"enter\",\n\t\t\t\t\t\t\tnode: entry[1],\n\t\t\t\t\t\t\tpath: `${path}.properties.${entry[0]}`\n\t\t\t\t\t\t});\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tcase \"array\":\n\t\t\t\tif (Object.hasOwn(node, \"items\")) tasks.push({\n\t\t\t\t\tkind: \"enter\",\n\t\t\t\t\tnode: node.items,\n\t\t\t\t\tpath: `${path}.items`\n\t\t\t\t});\n\t\t\t\tbreak;\n\t\t\tcase \"string\":\n\t\t\tcase \"number\":\n\t\t\tcase \"integer\":\n\t\t\tcase \"boolean\":\n\t\t\tcase \"null\": {\n\t\t\t\tconst hasEnum = Object.hasOwn(node, \"enum\");\n\t\t\t\tconst allowed = hasEnum ? node.enum : void 0;\n\t\t\t\tconst enumValid = isPlainJsonArray(allowed) && allowed.length > 0 && allowed.every((entry) => scalarMatches(schemaType, entry));\n\t\t\t\tif (hasEnum && !enumValid) violations.push(`${path}.enum must be a non-empty array of ${schemaType} values`);\n\t\t\t\tconst hasConst = Object.hasOwn(node, \"const\");\n\t\t\t\tconst declaredConst = hasConst ? node.const : void 0;\n\t\t\t\tconst constValid = scalarMatches(schemaType, declaredConst);\n\t\t\t\tif (hasConst) {\n\t\t\t\t\tif (!constValid) violations.push(`${path}.const must be a ${schemaType} value`);\n\t\t\t\t\telse if (enumValid && !allowed.includes(declaredConst)) violations.push(`${path}.const must be one of ${path}.enum when both are declared`);\n\t\t\t\t}\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\t/* v8 ignore next -- schemaType was narrowed from the closed SCHEMA_TYPES table above. */\n\t\t\tdefault: assertNever(schemaType, \"JsonSchemaType\");\n\t\t}\n\t}\n}\n/**\n* Assert the enforced subset plus the object-root constraint retained by\n* subagent and workflow structured outputs.\n* @param schema - untrusted caller-supplied schema.\n* @returns Assertion that the schema belongs to the supported subset and has an object root.\n*/\nfunction assertObjectJsonSchema(schema) {\n\tconst violations = [];\n\tcheckSchemaNode(schema, \"schema\", violations, /* @__PURE__ */ new Set());\n\tif (violations.length === 0 && (!isJsonSchemaRecord(schema) || !Object.hasOwn(schema, \"type\") || schema.type !== \"object\")) violations.push(\"schema.type must be \\\"object\\\" (structured output is object-rooted)\");\n\tif (violations.length > 0) throw new JsonSchemaError(violations);\n}\n//#endregion\n//#region packages/workflow/workflow/src/index.ts\n/**\n* Typed error for workflow-seam failures. Extends {@link HarnessError}, so the\n* `code` is machine-routable taxonomy. `fatal` drives the combinator\n* discipline: `parallel()`/`pipeline()` re-throw a fatal error (a typo'd\n* option or a tripped cap must kill the script loudly), and reserve the\n* per-item `null` for child-run failures and ordinary in-stage script errors.\n* Every {@link WorkflowErrorCode} is fatal; the flag exists so the\n* distinction is explicit at every catch site rather than implied.\n*/\nvar WorkflowError = class extends HarnessError {\n\t/** Whether combinators must propagate this error instead of nulling the item. */\n\tfatal;\n\tconstructor(message, code, options) {\n\t\tsuper(message, code, options);\n\t\tthis.name = \"WorkflowError\";\n\t\tthis.fatal = options?.fatal ?? true;\n\t}\n};\n/**\n* Whether combinators must re-throw `error` instead of mapping the item to `null`.\n* @param error - any thrown value; fatality is host `instanceof` (unforgeable from a script realm).\n* @returns true iff `error` is a {@link WorkflowError} whose `fatal` flag is set.\n*/\nfunction isFatalWorkflowError(error) {\n\treturn error instanceof WorkflowError && error.fatal;\n}\n//#endregion\n//#region packages/workflow/workflow-ptc/src/runtime.ts\n/**\n* Workflow VM hooks, child callbacks, ordinary concurrency limits and result serialization.\n* PTC owns process confinement and cancellation. Fatal hook and provider failures propagate\n* through combinators; ordinary child failures and stage errors become per-item nulls.\n* @module @deepseek-ai/dsh-workflow-ptc/runtime\n*/\n/** The `agent()` options the script may pass; everything else rejects loud. */\nconst SUPPORTED_AGENT_OPTIONS = new Set([\n\t\"label\",\n\t\"phase\",\n\t\"schema\",\n\t\"provider\",\n\t\"model\"\n]);\n/** Deferred Claude Code options we name explicitly in the rejection message. */\nconst DEFERRED_AGENT_OPTIONS = new Set([\n\t\"effort\",\n\t\"isolation\",\n\t\"agentType\"\n]);\n/** Flatten a child's final output blocks to text (the non-schema `agent()` result). */\nfunction outputText(blocks) {\n\treturn blocks.filter((block) => block.type === \"text\").map((block) => block.text).join(\"\");\n}\n/** A short display label derived from the prompt when the script passes none. */\nfunction defaultLabel(prompt) {\n\tconst newline = prompt.indexOf(\"\\n\");\n\tconst line = newline === -1 ? prompt : prompt.slice(0, newline);\n\treturn line.length <= 48 ? line : `${line.slice(0, 47)}…`;\n}\n/**\n* One script execution inside the confined Node process. The host owns\n* cancellation and cleanup of any dropped child work.\n*/\nvar WorkflowExecution = class {\n\tlimits;\n\tobserver;\n\tchildren;\n\t/** 1-based count of `agent()` calls started (the `agentsStarted` result field). */\n\tstarted = 0;\n\tactiveSlots = 0;\n\tslotWaiters = [];\n\tcurrentPhase;\n\tcontext;\n\tcompiled;\n\tconstructor(meta, body, args, limits, observer, children) {\n\t\tthis.limits = limits;\n\t\tthis.observer = observer;\n\t\tthis.children = children;\n\t\ttry {\n\t\t\tthis.compiled = new vm.Script(`(async () => {\\n${body}\\n})()`, {\n\t\t\t\tfilename: `workflow:${meta.name}`,\n\t\t\t\tlineOffset: -1\n\t\t\t});\n\t\t} catch (error) {\n\t\t\tthrow new WorkflowError(`workflow script does not parse: ${String(error)}`, \"SCRIPT_PARSE\", { cause: error });\n\t\t}\n\t\tthis.context = vm.createContext({}, { name: `workflow:${meta.name}` });\n\t\tconst globals = {\n\t\t\tagent: (prompt, opts) => this.contain(this.agent(prompt, opts)),\n\t\t\tparallel: (thunks) => this.contain(this.parallel(thunks)),\n\t\t\tpipeline: (items, ...stages) => this.contain(this.pipeline(items, stages)),\n\t\t\tphase: (title) => {\n\t\t\t\tthis.phase(title);\n\t\t\t},\n\t\t\tlog: (message) => {\n\t\t\t\tthis.log(message);\n\t\t\t},\n\t\t\targs\n\t\t};\n\t\tfor (const [key, value] of Object.entries(globals)) this.context[key] = typeof value === \"function\" ? Object.freeze(value) : value;\n\t}\n\t/**\n\t* Run the script and materialize its JSON return value.\n\t* @returns A completed or error result; script failures never reject.\n\t*/\n\tasync drive() {\n\t\ttry {\n\t\t\tconst scriptPromise = this.compiled.runInContext(this.context, { timeout: this.limits.syncTimeoutMs });\n\t\t\tconst raw = await this.contain(Promise.resolve(scriptPromise));\n\t\t\treturn {\n\t\t\t\tvalue: raw === void 0 ? null : this.materializeResult(raw),\n\t\t\t\tstopReason: \"completed\",\n\t\t\t\tagentsStarted: this.started\n\t\t\t};\n\t\t} catch (error) {\n\t\t\treturn {\n\t\t\t\tvalue: null,\n\t\t\t\tstopReason: \"error\",\n\t\t\t\terror: renderThrown(error),\n\t\t\t\tagentsStarted: this.started\n\t\t\t};\n\t\t}\n\t}\n\t/**\n\t* Attach a no-op rejection consumer WITHOUT changing what the caller\n\t* receives: if the script drops the promise, a host rejection cannot become\n\t* an unhandled rejection that kills the process; if\n\t* the script does await it, it still observes the rejection.\n\t*/\n\tcontain(promise) {\n\t\tpromise.catch(() => {});\n\t\treturn promise;\n\t}\n\t/** Materialize the script's return value; violations become RESULT_UNSERIALIZABLE. */\n\tmaterializeResult(raw) {\n\t\ttry {\n\t\t\treturn materializeFromRealm(raw, \"workflow result\");\n\t\t} catch (error) {\n\t\t\t/* v8 ignore next -- defensive rethrow arm: materializeFromRealm only throws MaterializeError */\n\t\t\tif (!(error instanceof MaterializeError)) throw error;\n\t\t\tthrow new WorkflowError(`the workflow's return value is not plain JSON data — ${error.message}. Return only JSON-serializable objects/arrays/scalars.`, \"RESULT_UNSERIALIZABLE\", { cause: error });\n\t\t}\n\t}\n\t/** Acquire one concurrency slot in FIFO order. */\n\tacquireSlot() {\n\t\tif (this.activeSlots < this.limits.maxConcurrentAgents) {\n\t\t\tthis.activeSlots += 1;\n\t\t\treturn Promise.resolve();\n\t\t}\n\t\treturn new Promise((resolve) => {\n\t\t\tthis.slotWaiters.push(() => {\n\t\t\t\tthis.activeSlots += 1;\n\t\t\t\tresolve();\n\t\t\t});\n\t\t});\n\t}\n\treleaseSlot() {\n\t\tthis.activeSlots -= 1;\n\t\tconst next = this.slotWaiters.shift();\n\t\tif (next) next();\n\t}\n\t/** The `agent(prompt, opts)` hook. */\n\tasync agent(rawPrompt, rawOpts) {\n\t\tif (typeof rawPrompt !== \"string\" || rawPrompt.length === 0) throw new WorkflowError(\"agent() requires a non-empty prompt string\", \"INVALID_ARGUMENT\");\n\t\tconst opts = this.readAgentOptions(rawOpts);\n\t\tif (this.started >= this.limits.maxTotalAgents) throw new WorkflowError(`this run reached its total agent cap (${this.limits.maxTotalAgents}) — a runaway-loop backstop; raise the applicable maxTotalAgents limit if the scale is intentional`, \"AGENT_CAP\");\n\t\tthis.started += 1;\n\t\tconst seq = this.started;\n\t\tconst label = opts.label ?? defaultLabel(rawPrompt);\n\t\tconst phase = opts.phase ?? this.currentPhase;\n\t\tawait this.acquireSlot();\n\t\ttry {\n\t\t\tlet run;\n\t\t\ttry {\n\t\t\t\trun = await this.children.startAgent({\n\t\t\t\t\tprompt: rawPrompt,\n\t\t\t\t\t...opts.schema !== void 0 ? { schema: opts.schema } : {},\n\t\t\t\t\t...opts.provider !== void 0 ? { provider: opts.provider } : {},\n\t\t\t\t\t...opts.model !== void 0 ? { model: opts.model } : {}\n\t\t\t\t});\n\t\t\t} catch (error) {\n\t\t\t\tthrow new WorkflowError(`agent() could not start a child: ${renderThrown(error)}`, \"AGENT_START\", { cause: error });\n\t\t\t}\n\t\t\tconst info = {\n\t\t\t\tseq,\n\t\t\t\tlabel,\n\t\t\t\t...phase !== void 0 ? { phase } : {},\n\t\t\t\tchildId: brandString(run.id)\n\t\t\t};\n\t\t\tthis.observer.agentStart(info);\n\t\t\ttry {\n\t\t\t\tlet result;\n\t\t\t\ttry {\n\t\t\t\t\tresult = await run.result;\n\t\t\t\t} catch (error) {\n\t\t\t\t\tthis.observer.agentEnd({\n\t\t\t\t\t\t...info,\n\t\t\t\t\t\toutcome: \"failed\"\n\t\t\t\t\t});\n\t\t\t\t\tthrow new WorkflowError(`child agent run failed: ${renderThrown(error)}`, \"AGENT_RESULT\", { cause: error });\n\t\t\t\t}\n\t\t\t\tif (result.stopReason === \"completed\") {\n\t\t\t\t\tif (opts.schema !== void 0) {\n\t\t\t\t\t\tif (result.structured === void 0) {\n\t\t\t\t\t\t\tthis.observer.agentEnd({\n\t\t\t\t\t\t\t\t...info,\n\t\t\t\t\t\t\t\toutcome: \"failed\"\n\t\t\t\t\t\t\t});\n\t\t\t\t\t\t\treturn null;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tthis.observer.agentEnd({\n\t\t\t\t\t\t\t...info,\n\t\t\t\t\t\t\toutcome: \"completed\"\n\t\t\t\t\t\t});\n\t\t\t\t\t\treturn result.structured;\n\t\t\t\t\t}\n\t\t\t\t\tthis.observer.agentEnd({\n\t\t\t\t\t\t...info,\n\t\t\t\t\t\toutcome: \"completed\"\n\t\t\t\t\t});\n\t\t\t\t\treturn outputText(result.output);\n\t\t\t\t}\n\t\t\t\tthis.observer.agentEnd({\n\t\t\t\t\t...info,\n\t\t\t\t\toutcome: \"failed\"\n\t\t\t\t});\n\t\t\t\treturn null;\n\t\t\t} finally {\n\t\t\t\tawait run.dispose();\n\t\t\t}\n\t\t} finally {\n\t\t\tthis.releaseSlot();\n\t\t}\n\t}\n\t/** Materialize + validate the `agent()` options bag from the realm. */\n\treadAgentOptions(rawOpts) {\n\t\tif (rawOpts === void 0) return {};\n\t\tlet opts;\n\t\ttry {\n\t\t\topts = materializeFromRealm(rawOpts, \"agent() options\");\n\t\t} catch (error) {\n\t\t\t/* v8 ignore next -- defensive rethrow arm: materializeFromRealm only throws MaterializeError */\n\t\t\tif (!(error instanceof MaterializeError)) throw error;\n\t\t\tthrow new WorkflowError(`agent() options must be plain JSON data — ${error.message}`, \"INVALID_ARGUMENT\", { cause: error });\n\t\t}\n\t\tif (typeof opts !== \"object\" || opts === null || Array.isArray(opts)) throw new WorkflowError(\"agent() options must be an object\", \"INVALID_ARGUMENT\");\n\t\tconst record = opts;\n\t\tfor (const key of Object.keys(record)) {\n\t\t\tif (SUPPORTED_AGENT_OPTIONS.has(key)) continue;\n\t\t\tif (DEFERRED_AGENT_OPTIONS.has(key)) throw new WorkflowError(`agent() option \"${key}\" is deferred and not supported by this engine (supported: label, phase, schema, provider, model)`, \"UNSUPPORTED_OPTION\");\n\t\t\tthrow new WorkflowError(`agent() option \"${key}\" is not recognized (supported: label, phase, schema, provider, model)`, \"UNSUPPORTED_OPTION\");\n\t\t}\n\t\tfor (const key of [\n\t\t\t\"label\",\n\t\t\t\"phase\",\n\t\t\t\"provider\",\n\t\t\t\"model\"\n\t\t]) if (record[key] !== void 0 && typeof record[key] !== \"string\") throw new WorkflowError(`agent() option \"${key}\" must be a string`, \"INVALID_ARGUMENT\");\n\t\tlet schema;\n\t\tif (record.schema !== void 0) try {\n\t\t\tassertObjectJsonSchema(record.schema);\n\t\t\tschema = record.schema;\n\t\t} catch (error) {\n\t\t\t/* v8 ignore next -- defensive rethrow arm: assertObjectJsonSchema only throws JsonSchemaError */\n\t\t\tif (!(error instanceof JsonSchemaError)) throw error;\n\t\t\tthrow new WorkflowError(`agent() schema is outside the supported subset — ${error.message}`, \"UNSUPPORTED_SCHEMA\", { cause: error });\n\t\t}\n\t\treturn {\n\t\t\t...record.label !== void 0 ? { label: record.label } : {},\n\t\t\t...record.phase !== void 0 ? { phase: record.phase } : {},\n\t\t\t...record.provider !== void 0 ? { provider: record.provider } : {},\n\t\t\t...record.model !== void 0 ? { model: record.model } : {},\n\t\t\t...schema !== void 0 ? { schema } : {}\n\t\t};\n\t}\n\t/** The `parallel(thunks)` hook: each thunk caught → `null`; fatal errors propagate. */\n\tasync parallel(rawThunks) {\n\t\tif (!Array.isArray(rawThunks)) throw new WorkflowError(\"parallel() requires an array of zero-argument functions\", \"INVALID_ARGUMENT\");\n\t\tthis.assertItemCap(rawThunks.length, \"parallel()\");\n\t\tconst thunks = rawThunks.map((thunk, index) => {\n\t\t\tif (typeof thunk !== \"function\") throw new WorkflowError(`parallel() item ${index} is not a function`, \"INVALID_ARGUMENT\");\n\t\t\treturn thunk;\n\t\t});\n\t\treturn Promise.all(thunks.map(async (thunk) => {\n\t\t\ttry {\n\t\t\t\treturn await thunk();\n\t\t\t} catch (error) {\n\t\t\t\tif (isFatalWorkflowError(error)) throw error;\n\t\t\t\treturn null;\n\t\t\t}\n\t\t}));\n\t}\n\t/** The `pipeline(items, ...stages)` hook: per-item stage chains, NO cross-stage barrier. */\n\tasync pipeline(rawItems, rawStages) {\n\t\tif (!Array.isArray(rawItems)) throw new WorkflowError(\"pipeline() requires an items array\", \"INVALID_ARGUMENT\");\n\t\tthis.assertItemCap(rawItems.length, \"pipeline()\");\n\t\tif (rawStages.length === 0) throw new WorkflowError(\"pipeline() requires at least one stage function\", \"INVALID_ARGUMENT\");\n\t\tconst stages = rawStages.map((stage, index) => {\n\t\t\tif (typeof stage !== \"function\") throw new WorkflowError(`pipeline() stage ${index} is not a function`, \"INVALID_ARGUMENT\");\n\t\t\treturn stage;\n\t\t});\n\t\treturn Promise.all(rawItems.map(async (item, index) => {\n\t\t\tlet value = item;\n\t\t\ttry {\n\t\t\t\tfor (const stage of stages) value = await stage(value, item, index);\n\t\t\t\treturn value;\n\t\t\t} catch (error) {\n\t\t\t\tif (isFatalWorkflowError(error)) throw error;\n\t\t\t\treturn null;\n\t\t\t}\n\t\t}));\n\t}\n\tassertItemCap(length, hook) {\n\t\tif (length > this.limits.maxItemsPerCall) throw new WorkflowError(`${hook} received ${length} items — over the per-call cap (${this.limits.maxItemsPerCall}); split the work or raise maxItemsPerCall in the engine config`, \"ITEM_CAP\");\n\t}\n\t/** The `phase(title)` hook: sets the current label for subsequent `agent()` calls and notifies observers. */\n\tphase(title) {\n\t\tif (typeof title !== \"string\" || title.length === 0) throw new WorkflowError(\"phase() requires a non-empty title string\", \"INVALID_ARGUMENT\");\n\t\tthis.currentPhase = title;\n\t\tthis.observer.phase(title);\n\t}\n\t/** The `log(message)` hook: narration to observers. */\n\tlog(message) {\n\t\tif (typeof message !== \"string\") throw new WorkflowError(\"log() requires a message string\", \"INVALID_ARGUMENT\");\n\t\tthis.observer.log(message);\n\t}\n};\n//#endregion\n//#region packages/workflow/workflow-ptc/src/guest.ts\n/**\n* Run a workflow with one progress batch in flight. Drain progress before child\n* disposal and the terminal result; PTC and the host own cancellation and cleanup.\n* @param host - JSON callbacks owned by this workflow run.\n* @returns The script result after progress delivery; initialization failures reject.\n*/\nasync function runWorkflowGuest(host) {\n\tconst init = await host.begin({});\n\tlet queued = [];\n\tlet inFlight;\n\tlet progressError;\n\tconst flush = () => {\n\t\tif (inFlight !== void 0 || queued.length === 0) return;\n\t\tconst batch = queued;\n\t\tqueued = [];\n\t\tinFlight = host.progress(batch).then(() => {\n\t\t\tinFlight = void 0;\n\t\t\tflush();\n\t\t}, (error) => {\n\t\t\tprogressError = renderThrown(error);\n\t\t\tqueued = [];\n\t\t\tinFlight = void 0;\n\t\t});\n\t};\n\tconst send = (event) => {\n\t\tif (progressError !== void 0) return;\n\t\tqueued.push(event);\n\t\tflush();\n\t};\n\tconst drain = async () => {\n\t\twhile (inFlight !== void 0) await inFlight;\n\t};\n\tconst result = await new WorkflowExecution(init.meta, init.body, init.args, init.limits, {\n\t\tphase: (title) => {\n\t\t\tsend({\n\t\t\t\ttype: \"phase\",\n\t\t\t\ttitle\n\t\t\t});\n\t\t},\n\t\tlog: (message) => {\n\t\t\tsend({\n\t\t\t\ttype: \"log\",\n\t\t\t\tmessage\n\t\t\t});\n\t\t},\n\t\tagentStart: (info) => {\n\t\t\tsend({\n\t\t\t\ttype: \"agent-start\",\n\t\t\t\tinfo\n\t\t\t});\n\t\t},\n\t\tagentEnd: (info) => {\n\t\t\tsend({\n\t\t\t\ttype: \"agent-end\",\n\t\t\t\tinfo\n\t\t\t});\n\t\t}\n\t}, { async startAgent(request) {\n\t\tconst { callId, childId } = await host.startChild(request);\n\t\tconst result = host.childResult({ callId });\n\t\tresult.catch(() => {});\n\t\treturn {\n\t\t\tid: childId,\n\t\t\tresult,\n\t\t\tasync dispose() {\n\t\t\t\tawait drain();\n\t\t\t\tawait host.disposeChild({ callId });\n\t\t\t}\n\t\t};\n\t} }).drive();\n\tawait drain();\n\treturn progressError === void 0 ? result : {\n\t\tvalue: null,\n\t\tstopReason: \"error\",\n\t\terror: progressError,\n\t\tagentsStarted: result.agentsStarted\n\t};\n}\n//#endregion\nexport { runWorkflowGuest };\n//# sourceURL=dsh-workflow-guest.js\n"
+export const WORKFLOW_GUEST_SOURCE = "import * as vm from \"node:vm\";\n//#region packages/workflow/workflow-ptc/src/realm.ts\n/**\n* Materializes script VM values as plain JSON and renders thrown values.\n* Getters and proxy traps may execute inside the confined Node process;\n* process isolation and cancellation belong to PTC, not the VM.\n* @module @deepseek-ai/dsh-workflow-ptc/realm\n*/\n/** Thrown by {@link materializeFromRealm}; the caller wraps it into the right `WorkflowError` code. */\nvar MaterializeError = class extends Error {\n\tpath;\n\treason;\n\tconstructor(path, reason) {\n\t\tsuper(`${path}: ${reason}`);\n\t\tthis.path = path;\n\t\tthis.reason = reason;\n\t\tthis.name = \"MaterializeError\";\n\t}\n};\n/**\n* Render a thrown value to failure text without ever throwing: prefer the\n* `stack` (host or realm — a realm error's `stack` is a plain string read),\n* fall back to `message`, then `String()`. Reading those properties MAY run\n* script code; if that code itself throws, a fixed label is returned instead.\n* @param error - any value thrown in the host or guest realm.\n* @returns human-readable text for the failure report; prefers the stack.\n*/\nfunction renderThrown(error) {\n\ttry {\n\t\tconst stack = error?.stack;\n\t\tif (typeof stack === \"string\" && stack.length > 0) return stack;\n\t\tconst message = error?.message;\n\t\tif (typeof message === \"string\" && message.length > 0) return message;\n\t\treturn String(error);\n\t} catch {\n\t\treturn \"[unrenderable thrown value]\";\n\t}\n}\n/**\n* Whether an object's prototype chain represents a plain data object: `null`, or a prototype\n* whose own prototype is `null` (the realm's `Object.prototype` — which we\n* cannot compare by identity across realms). A `Date`/`Map`/class instance\n* has a longer chain and is rejected.\n*/\nfunction hasPlainPrototype(value) {\n\tconst proto = Object.getPrototypeOf(value);\n\tif (proto === null) return true;\n\treturn Object.getPrototypeOf(proto) === null;\n}\n/**\n* Copy `value` (typically from the vm realm) into plain host JSON data. Root `undefined` is\n* returned unchanged; nested `undefined` and values JSON cannot represent losslessly fail\n* with the offending path. Property accessors run normally, and a throwing read is wrapped\n* with its rendered failure.\n*\n* @param value - the realm value to materialize.\n* @param root - the path label for the root value (error messages).\n* @returns the host-realm copy (plain objects/arrays/scalars only).\n* @throws {@link MaterializeError} for unsupported values, cycles, sparse arrays, exotic\n*   prototypes, or property reads that throw.\n*/\nfunction materializeFromRealm(value, root = \"value\") {\n\tif (value === void 0) return void 0;\n\ttry {\n\t\treturn materialize(value, root, /* @__PURE__ */ new Set());\n\t} catch (error) {\n\t\tif (error instanceof MaterializeError) throw error;\n\t\tthrow new MaterializeError(root, `reading the value threw: ${renderThrown(error)}`);\n\t}\n}\nfunction materialize(value, path, seen) {\n\tswitch (typeof value) {\n\t\tcase \"boolean\":\n\t\tcase \"string\": return value;\n\t\tcase \"number\":\n\t\t\tif (!Number.isFinite(value)) throw new MaterializeError(path, \"non-finite numbers are not JSON data\");\n\t\t\treturn value;\n\t\tcase \"bigint\": throw new MaterializeError(path, \"bigints are not JSON data\");\n\t\tcase \"function\": throw new MaterializeError(path, \"functions are not plain JSON data\");\n\t\tcase \"symbol\": throw new MaterializeError(path, \"symbols are not plain JSON data\");\n\t\tcase \"undefined\": throw new MaterializeError(path, \"undefined is not JSON data\");\n\t\tcase \"object\": break;\n\t}\n\tif (value === null) return null;\n\tconst objectValue = value;\n\tif (seen.has(objectValue)) throw new MaterializeError(path, \"circular references are not JSON data\");\n\tseen.add(objectValue);\n\ttry {\n\t\tif (Array.isArray(objectValue)) return materializeArray(objectValue, path, seen);\n\t\treturn materializeObject(objectValue, path, seen);\n\t} finally {\n\t\tseen.delete(objectValue);\n\t}\n}\nfunction materializeArray(value, path, seen) {\n\tconst out = [];\n\tfor (let index = 0; index < value.length; index++) {\n\t\tif (!(index in value)) throw new MaterializeError(`${path}[${index}]`, \"sparse arrays are not JSON data\");\n\t\tout.push(materialize(value[index], `${path}[${index}]`, seen));\n\t}\n\tfor (const key of Object.keys(value)) {\n\t\tconst index = Number(key);\n\t\tif (!Number.isInteger(index) || index < 0 || index >= value.length) throw new MaterializeError(`${path}.${key}`, \"arrays with non-index properties are not JSON data\");\n\t}\n\tif (Object.getOwnPropertySymbols(value).length > 0) throw new MaterializeError(path, \"symbol-keyed properties are not plain JSON data\");\n\treturn out;\n}\nfunction materializeObject(value, path, seen) {\n\tif (!hasPlainPrototype(value)) throw new MaterializeError(path, \"only plain objects and arrays are JSON data (exotic prototype)\");\n\tif (Object.getOwnPropertySymbols(value).length > 0) throw new MaterializeError(path, \"symbol-keyed properties are not plain JSON data\");\n\tconst out = {};\n\tfor (const key of Object.keys(value)) Object.defineProperty(out, key, {\n\t\tvalue: materialize(value[key], `${path}.${key}`, seen),\n\t\tenumerable: true,\n\t\twritable: true,\n\t\tconfigurable: true\n\t});\n\treturn out;\n}\n//#endregion\n//#region packages/util/brand/src/index.ts\n/**\n* Apply a compile-time string brand without changing the value.\n* @param value - string admitted by the domain that owns the target brand.\n* @returns the same string with the requested compile-time brand.\n*/\nfunction brandString(value) {\n\treturn value;\n}\n//#endregion\n//#region packages/llm/llm/src/error.ts\n/**\n* Harness error base with a stable machine-routable code and chained cause.\n* Package errors extend it so tool results and replay can retain failure class.\n* @module @deepseek-ai/dsh-llm/error\n*/\n/**\n* Base class for all harness errors. Carries a `code` (stable, programmatic —\n* e.g. `NO_ADAPTER`, `INVALID_ARGS`) distinct from the\n* human-readable `message`, and supports `cause` chaining via the standard\n* `ErrorOptions`. `name` defaults to the subclass constructor name.\n*/\nvar HarnessError = class extends Error {\n\t/** Stable machine-routable failure class (e.g. `RATE_LIMIT`); route on this, never by parsing `message`. */\n\tcode;\n\tconstructor(message, code, options) {\n\t\tsuper(message, options);\n\t\tthis.code = code;\n\t\tthis.name = new.target.name;\n\t}\n};\nnew RegExp(String.raw`(?:^|[^a-z0-9])context[\\s_-](?:length|window)[\\s_-]` + String.raw`(?:exceed(?:ed|s)?|overflow(?:ed)?|limit[\\s_-]exceeded)(?:$|[^a-z0-9])`, \"i\");\nnew RegExp(String.raw`\\b(?:request|prompt|input|messages?)\\s+(?:is\\s+|are\\s+)?` + String.raw`too\\s+(?:large|long)\\s+for\\s+(?:(?:this|the)\\s+)?` + String.raw`(?:model(?:'s)?\\s+)?context(?:\\s+window)?\\b`, \"i\");\nnew RegExp(String.raw`\\b(?:input|prompt|request|messages?)\\b.{0,40}` + String.raw`\\b(?:exceed(?:s|ed)?|overflows?|is\\s+larger\\s+than)\\b.{0,40}` + String.raw`\\b(?:the\\s+)?(?:model(?:'s)?\\s+)?context(?:\\s+(?:length|window))?\\b`, \"i\");\n//#endregion\n//#region packages/util/values/src/index.ts\n/**\n* Mark an unreachable closed-union branch.\n* @param value - impossible value; an unhandled typed variant fails at the call site.\n* @param context - optional switch-site label included in the failure message.\n* @returns never; a runtime value that escaped its type always throws.\n*/\nfunction assertNever(value, context) {\n\tconst rendered = JSON.stringify(value) ?? String(value);\n\tthrow new Error(`unreachable variant${context ? ` in ${context}` : \"\"}: ${rendered}`);\n}\n/** Whether a realm-owned intrinsic prototype has a native constructor matching this engine's representation. */\nfunction hasIntrinsicConstructor$1(prototype, name) {\n\tconst constructor = Object.getOwnPropertyDescriptor(prototype, \"constructor\")?.value;\n\tif (typeof constructor !== \"function\") return false;\n\ttry {\n\t\treturn constructor.name === name && constructor.prototype === prototype && Function.prototype.toString.call(constructor) === Function.prototype.toString.call(name === \"Array\" ? Array : Object);\n\t} catch {\n\t\treturn false;\n\t}\n}\n/** Whether a candidate is one realm's intrinsic `Object.prototype`. */\nfunction isIntrinsicObjectPrototype$1(value) {\n\treturn Object.getPrototypeOf(value) === null && hasIntrinsicConstructor$1(value, \"Object\");\n}\n/** Whether an array uses one realm's intrinsic `Array.prototype`, not a subclass or forged prototype. */\nfunction hasPlainArrayPrototype$1(value) {\n\tconst prototype = Object.getPrototypeOf(value);\n\tif (!Array.isArray(prototype) || !hasIntrinsicConstructor$1(prototype, \"Array\")) return false;\n\tconst objectPrototype = Object.getPrototypeOf(prototype);\n\treturn typeof objectPrototype === \"object\" && objectPrototype !== null && isIntrinsicObjectPrototype$1(objectPrototype);\n}\n/** Whether an object is a plain or null-prototype record from any JavaScript realm. */\nfunction hasPlainObjectPrototype(value) {\n\tconst prototype = Object.getPrototypeOf(value);\n\treturn prototype === null || typeof prototype === \"object\" && isIntrinsicObjectPrototype$1(prototype);\n}\n/** Return every JSON-visible object key, or reject own data JSON would discard. */\nfunction enumerableStringKeys(value) {\n\tconst keys = Reflect.ownKeys(value);\n\tif (keys.some((key) => typeof key !== \"string\" || !Object.prototype.propertyIsEnumerable.call(value, key))) return void 0;\n\treturn keys;\n}\n/** Validate lossless JSON iteratively, optionally materializing a detached snapshot. */\nfunction walkJsonValue(value, detach) {\n\tconst ancestors = /* @__PURE__ */ new Set();\n\tlet root;\n\tlet parent;\n\tconst assign = (item) => {\n\t\tif (parent === void 0) {\n\t\t\tif (detach) root = item;\n\t\t} else if (parent.kind === \"array\") {\n\t\t\tif (parent.target !== void 0) parent.target[parent.key] = item;\n\t\t} else if (parent.target !== void 0) Object.defineProperty(parent.target, parent.key, {\n\t\t\tvalue: item,\n\t\t\tenumerable: true,\n\t\t\tconfigurable: true,\n\t\t\twritable: true\n\t\t});\n\t};\n\tconst frames = [];\n\tlet current = value;\n\tfor (;;) {\n\t\tif (current === null) assign(null);\n\t\telse if (typeof current === \"boolean\" || typeof current === \"string\") assign(current);\n\t\telse if (typeof current === \"number\") {\n\t\t\tif (!Number.isFinite(current) || Object.is(current, -0)) return void 0;\n\t\t\tassign(current);\n\t\t} else {\n\t\t\tif (typeof current !== \"object\") return void 0;\n\t\t\tif (ancestors.has(current)) return void 0;\n\t\t\tif (Array.isArray(current)) {\n\t\t\t\tif (!hasPlainArrayPrototype$1(current)) return void 0;\n\t\t\t\tconst length = current.length;\n\t\t\t\tif (Reflect.ownKeys(current).length !== length + 1) return void 0;\n\t\t\t\tconst target = detach ? [] : void 0;\n\t\t\t\tif (target !== void 0) assign(target);\n\t\t\t\tlet indices;\n\t\t\t\tif (!Number.isInteger(length)) {\n\t\t\t\t\tindices = [];\n\t\t\t\t\tfor (let index = length - 1; index >= 0; index--) indices.push(index);\n\t\t\t\t}\n\t\t\t\tframes.push({\n\t\t\t\t\tkind: \"array\",\n\t\t\t\t\tsource: current,\n\t\t\t\t\tlength: indices?.length ?? length,\n\t\t\t\t\tindex: 0,\n\t\t\t\t\tkey: 0,\n\t\t\t\t\tindices,\n\t\t\t\t\ttarget\n\t\t\t\t});\n\t\t\t} else {\n\t\t\t\tif (!hasPlainObjectPrototype(current)) return void 0;\n\t\t\t\tconst keys = enumerableStringKeys(current);\n\t\t\t\tif (keys === void 0) return void 0;\n\t\t\t\tconst target = detach ? {} : void 0;\n\t\t\t\tif (target !== void 0) assign(target);\n\t\t\t\tframes.push({\n\t\t\t\t\tkind: \"object\",\n\t\t\t\t\tsource: current,\n\t\t\t\t\tkeys,\n\t\t\t\t\tindex: 0,\n\t\t\t\t\tkey: \"\",\n\t\t\t\t\ttarget\n\t\t\t\t});\n\t\t\t}\n\t\t\tancestors.add(current);\n\t\t}\n\t\tfor (;;) {\n\t\t\tconst frame = frames.at(-1);\n\t\t\tif (frame === void 0) return detach ? root : true;\n\t\t\tconst length = frame.kind === \"array\" ? frame.length : frame.keys.length;\n\t\t\tif (frame.index >= length) {\n\t\t\t\tancestors.delete(frame.source);\n\t\t\t\tframes.pop();\n\t\t\t\tcontinue;\n\t\t\t}\n\t\t\tconst index = frame.index++;\n\t\t\tparent = frame;\n\t\t\tif (frame.kind === \"array\") {\n\t\t\t\tconst key = frame.indices === void 0 ? index : frame.indices[frame.indices.length - index - 1];\n\t\t\t\t/* v8 ignore next -- the loop is bounded by the captured index count. */\n\t\t\t\tif (key === void 0) return void 0;\n\t\t\t\tif (!Object.prototype.hasOwnProperty.call(frame.source, key)) return void 0;\n\t\t\t\tframe.key = key;\n\t\t\t\tcurrent = frame.source[key];\n\t\t\t} else {\n\t\t\t\tconst key = frame.keys[index];\n\t\t\t\t/* v8 ignore next -- the loop is bounded by the captured key count. */\n\t\t\t\tif (key === void 0) return void 0;\n\t\t\t\tframe.key = key;\n\t\t\t\tcurrent = frame.source[key];\n\t\t\t}\n\t\t\tbreak;\n\t\t}\n\t}\n}\n/**\n* Test the same lossless JSON rules as {@link snapshotJsonValue} without detaching the value.\n* @param value - candidate value to test.\n* @returns whether the value survives a JSON round trip without loss.\n*/\nfunction isJsonValue(value) {\n\treturn walkJsonValue(value, false) === true;\n}\n//#endregion\n//#region packages/core/tools/src/json-schema.ts\n/**\n* Enforced JSON Schema subset shared by tool outputs, generated PTC mode\n* types, subagents, and workflows. The subset accepts any JSON root, an\n* annotation-only schema for unconstrained JSON, one scalar `type`, object\n* `properties`/`required`/boolean `additionalProperties`, array `items`,\n* type-correct scalar `enum`/`const`, and exact-one `oneOf`.\n*\n* Unsupported or misplaced keywords reject rather than being accepted without\n* enforcement. Consumers that require an object root apply\n* {@link assertObjectJsonSchema} before accepting input.\n* @module dsh-tools/json-schema\n*/\n/**\n* Thrown when a raw schema falls outside the enforced subset. `violations`\n* lists every offending path instead of stopping at the first author error.\n*/\nvar JsonSchemaError = class extends HarnessError {\n\t/** Individual schema violations in walk order. */\n\tviolations;\n\tconstructor(violations) {\n\t\tsuper(`unsupported JSON schema: ${violations.join(\"; \")}`, \"UNSUPPORTED_SCHEMA\");\n\t\tthis.name = \"JsonSchemaError\";\n\t\tthis.violations = violations;\n\t}\n};\nconst CONSTRAINT_KEYWORDS = new Set([\n\t\"type\",\n\t\"oneOf\",\n\t\"properties\",\n\t\"required\",\n\t\"additionalProperties\",\n\t\"items\",\n\t\"enum\",\n\t\"const\"\n]);\nconst ANNOTATION_KEYWORDS = new Set([\n\t\"description\",\n\t\"title\",\n\t\"default\",\n\t\"examples\"\n]);\nconst SCHEMA_TYPES = [\n\t\"object\",\n\t\"array\",\n\t\"string\",\n\t\"number\",\n\t\"integer\",\n\t\"boolean\",\n\t\"null\"\n];\n/** Whether a realm-owned intrinsic prototype is backed by its native constructor. */\nfunction hasIntrinsicConstructor(prototype, name) {\n\tconst constructor = Object.getOwnPropertyDescriptor(prototype, \"constructor\")?.value;\n\tif (typeof constructor !== \"function\") return false;\n\ttry {\n\t\treturn constructor.name === name && constructor.prototype === prototype && Function.prototype.toString.call(constructor) === `function ${name}() { [native code] }`;\n\t} catch {\n\t\treturn false;\n\t}\n}\n/** Whether a candidate is one realm's intrinsic `Object.prototype`. */\nfunction isIntrinsicObjectPrototype(value) {\n\treturn Object.getPrototypeOf(value) === null && hasIntrinsicConstructor(value, \"Object\");\n}\n/**\n* Test for a realm-agnostic plain JSON record without accepting arrays or\n* exotic objects.\n* @param value - candidate record from any JavaScript realm.\n* @returns Whether the value has a plain-object prototype chain.\n*/\nfunction isPlainJsonRecord(value) {\n\tif (typeof value !== \"object\" || value === null || Array.isArray(value)) return false;\n\ttry {\n\t\tconst prototype = Object.getPrototypeOf(value);\n\t\treturn prototype === null || typeof prototype === \"object\" && isIntrinsicObjectPrototype(prototype);\n\t} catch {\n\t\treturn false;\n\t}\n}\n/** Whether an array uses one realm's intrinsic `Array.prototype`. */\nfunction hasPlainArrayPrototype(value) {\n\tconst prototype = Object.getPrototypeOf(value);\n\tif (!Array.isArray(prototype) || !hasIntrinsicConstructor(prototype, \"Array\")) return false;\n\tconst objectPrototype = Object.getPrototypeOf(prototype);\n\treturn typeof objectPrototype === \"object\" && objectPrototype !== null && isIntrinsicObjectPrototype(objectPrototype);\n}\n/** Return whether a record contains only own enumerable string keys. */\nfunction hasOnlyEnumerableStringKeys(value) {\n\ttry {\n\t\treturn Reflect.ownKeys(value).every((key) => typeof key === \"string\" && Object.prototype.propertyIsEnumerable.call(value, key));\n\t} catch {\n\t\treturn false;\n\t}\n}\n/**\n* Test for an ordinary schema record whose keys survive JSON projection.\n* @param value - candidate record from any JavaScript realm.\n* @returns Whether the record has an intrinsic prototype and only own enumerable string keys.\n*/\nfunction isJsonSchemaRecord(value) {\n\treturn isPlainJsonRecord(value) && hasOnlyEnumerableStringKeys(value);\n}\n/**\n* Test for a dense ordinary array with no JSON-invisible decorations.\n* @param value - candidate array from any JavaScript realm.\n* @returns Whether the array is intrinsic, dense, and undecorated.\n*/\nfunction isPlainJsonArray(value) {\n\tif (!Array.isArray(value)) return false;\n\ttry {\n\t\tif (!hasPlainArrayPrototype(value) || Reflect.ownKeys(value).length !== value.length + 1) return false;\n\t\tfor (let index = 0; index < value.length; index++) if (!Object.hasOwn(value, index)) return false;\n\t\treturn true;\n\t} catch {\n\t\treturn false;\n\t}\n}\n/** Lossless finite JSON number, excluding negative zero. */\nfunction isJsonNumber(value) {\n\treturn typeof value === \"number\" && Number.isFinite(value) && !Object.is(value, -0);\n}\n/** Whether a scalar is valid for one declared schema type. */\nfunction scalarMatches(type, value) {\n\tswitch (type) {\n\t\tcase \"string\": return typeof value === \"string\";\n\t\tcase \"number\": return isJsonNumber(value);\n\t\tcase \"integer\": return isJsonNumber(value) && Number.isInteger(value);\n\t\tcase \"boolean\": return typeof value === \"boolean\";\n\t\tcase \"null\": return value === null;\n\t\t/* v8 ignore next -- JsonSchemaScalarType is closed; this retains compile-time exhaustiveness. */\n\t\tdefault: return assertNever(type, \"JsonSchemaType\");\n\t}\n}\n/** Keywords that are invalid beside `oneOf`. */\nconst ONE_OF_SIBLING_KEYWORDS = [\n\t\"properties\",\n\t\"required\",\n\t\"additionalProperties\",\n\t\"items\",\n\t\"enum\",\n\t\"const\"\n];\n/** Validate object-only fields after its property schemas have been visited. */\nfunction checkObjectSchemaTail(node, path, properties, violations) {\n\tconst hasRequired = Object.hasOwn(node, \"required\");\n\tconst required = hasRequired ? node.required : void 0;\n\tif (hasRequired) if (!isPlainJsonArray(required) || required.some((entry) => typeof entry !== \"string\")) violations.push(`${path}.required must be an array of strings`);\n\telse {\n\t\tconst declared = isJsonSchemaRecord(properties) ? properties : {};\n\t\tfor (const key of required) if (!Object.hasOwn(declared, key)) violations.push(`${path}.required names \"${key}\" which is not in properties`);\n\t}\n\tif (Object.hasOwn(node, \"additionalProperties\") && typeof node.additionalProperties !== \"boolean\") violations.push(`${path}.additionalProperties must be a boolean`);\n}\n/** Collect every violation for one raw schema tree without using the JavaScript call stack. */\nfunction checkSchemaNode(root, rootPath, violations, seen) {\n\tconst tasks = [{\n\t\tkind: \"enter\",\n\t\tnode: root,\n\t\tpath: rootPath\n\t}];\n\tfor (let task = tasks.pop(); task !== void 0; task = tasks.pop()) {\n\t\tif (task.kind === \"leave\") {\n\t\t\tseen.delete(task.node);\n\t\t\tcontinue;\n\t\t}\n\t\tif (task.kind === \"one-of-tail\") {\n\t\t\tfor (const key of ONE_OF_SIBLING_KEYWORDS) if (Object.hasOwn(task.node, key)) violations.push(`${task.path}.${key} is not supported beside oneOf`);\n\t\t\tcontinue;\n\t\t}\n\t\tif (task.kind === \"object-tail\") {\n\t\t\tcheckObjectSchemaTail(task.node, task.path, task.properties, violations);\n\t\t\tcontinue;\n\t\t}\n\t\tconst { node, path } = task;\n\t\tif (!isJsonSchemaRecord(node)) {\n\t\t\tviolations.push(`${path} must be a schema object`);\n\t\t\tcontinue;\n\t\t}\n\t\tif (seen.has(node)) {\n\t\t\tviolations.push(`${path} is circular`);\n\t\t\tcontinue;\n\t\t}\n\t\tseen.add(node);\n\t\ttasks.push({\n\t\t\tkind: \"leave\",\n\t\t\tnode\n\t\t});\n\t\tfor (const key of Object.keys(node)) {\n\t\t\tif (CONSTRAINT_KEYWORDS.has(key)) continue;\n\t\t\tif (ANNOTATION_KEYWORDS.has(key)) {\n\t\t\t\ttry {\n\t\t\t\t\tif (!isJsonValue(node[key])) violations.push(`${path}.${key} annotation must be lossless JSON data`);\n\t\t\t\t} catch {\n\t\t\t\t\tviolations.push(`${path}.${key} annotation must be lossless JSON data`);\n\t\t\t\t}\n\t\t\t\tcontinue;\n\t\t\t}\n\t\t\tviolations.push(`${path}.${key} is not a supported keyword (subset: type/oneOf/properties/required/additionalProperties/items/enum/const + annotations)`);\n\t\t}\n\t\tif (Object.hasOwn(node, \"description\") && typeof node.description !== \"string\") violations.push(`${path}.description must be a string`);\n\t\tif (Object.hasOwn(node, \"title\") && typeof node.title !== \"string\") violations.push(`${path}.title must be a string`);\n\t\tconst hasType = Object.hasOwn(node, \"type\");\n\t\tconst hasOneOf = Object.hasOwn(node, \"oneOf\");\n\t\tif (hasType && hasOneOf) {\n\t\t\tviolations.push(`${path} cannot declare both type and oneOf`);\n\t\t\tcontinue;\n\t\t}\n\t\tif (!hasType && !hasOneOf) {\n\t\t\tfor (const key of ONE_OF_SIBLING_KEYWORDS) if (Object.hasOwn(node, key)) violations.push(`${path}.${key} requires type or oneOf`);\n\t\t\tcontinue;\n\t\t}\n\t\tif (hasOneOf) {\n\t\t\tconst oneOf = node.oneOf;\n\t\t\ttasks.push({\n\t\t\t\tkind: \"one-of-tail\",\n\t\t\t\tnode,\n\t\t\t\tpath\n\t\t\t});\n\t\t\tif (!isPlainJsonArray(oneOf) || oneOf.length < 2) violations.push(`${path}.oneOf must be an array of at least two schemas`);\n\t\t\telse for (let index = oneOf.length - 1; index >= 0; index--) tasks.push({\n\t\t\t\tkind: \"enter\",\n\t\t\t\tnode: oneOf[index],\n\t\t\t\tpath: `${path}.oneOf[${index}]`\n\t\t\t});\n\t\t\tcontinue;\n\t\t}\n\t\tconst type = node.type;\n\t\tif (typeof type !== \"string\" || !SCHEMA_TYPES.includes(type)) {\n\t\t\tviolations.push(Array.isArray(type) ? `${path}.type must be a single type string (type arrays are not supported)` : `${path}.type must be one of ${SCHEMA_TYPES.join(\"/\")}`);\n\t\t\tcontinue;\n\t\t}\n\t\tconst schemaType = type;\n\t\tfor (const [key, types] of Object.entries({\n\t\t\tproperties: [\"object\"],\n\t\t\trequired: [\"object\"],\n\t\t\tadditionalProperties: [\"object\"],\n\t\t\titems: [\"array\"],\n\t\t\tenum: [\n\t\t\t\t\"string\",\n\t\t\t\t\"number\",\n\t\t\t\t\"integer\",\n\t\t\t\t\"boolean\",\n\t\t\t\t\"null\"\n\t\t\t],\n\t\t\tconst: [\n\t\t\t\t\"string\",\n\t\t\t\t\"number\",\n\t\t\t\t\"integer\",\n\t\t\t\t\"boolean\",\n\t\t\t\t\"null\"\n\t\t\t]\n\t\t})) if (Object.hasOwn(node, key) && !types.includes(schemaType)) violations.push(`${path}.${key} is not supported on type \"${schemaType}\"`);\n\t\tswitch (schemaType) {\n\t\t\tcase \"object\": {\n\t\t\t\tconst properties = Object.hasOwn(node, \"properties\") ? node.properties : void 0;\n\t\t\t\ttasks.push({\n\t\t\t\t\tkind: \"object-tail\",\n\t\t\t\t\tnode,\n\t\t\t\t\tpath,\n\t\t\t\t\tproperties\n\t\t\t\t});\n\t\t\t\tif (Object.hasOwn(node, \"properties\")) if (!isJsonSchemaRecord(properties)) violations.push(`${path}.properties must be an object of schemas`);\n\t\t\t\telse {\n\t\t\t\t\tconst entries = Object.entries(properties);\n\t\t\t\t\tfor (let index = entries.length - 1; index >= 0; index--) {\n\t\t\t\t\t\tconst entry = entries[index];\n\t\t\t\t\t\t/* v8 ignore next -- the loop is bounded by the captured entry count. */\n\t\t\t\t\t\tif (entry === void 0) continue;\n\t\t\t\t\t\ttasks.push({\n\t\t\t\t\t\t\tkind: \"enter\",\n\t\t\t\t\t\t\tnode: entry[1],\n\t\t\t\t\t\t\tpath: `${path}.properties.${entry[0]}`\n\t\t\t\t\t\t});\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tcase \"array\":\n\t\t\t\tif (Object.hasOwn(node, \"items\")) tasks.push({\n\t\t\t\t\tkind: \"enter\",\n\t\t\t\t\tnode: node.items,\n\t\t\t\t\tpath: `${path}.items`\n\t\t\t\t});\n\t\t\t\tbreak;\n\t\t\tcase \"string\":\n\t\t\tcase \"number\":\n\t\t\tcase \"integer\":\n\t\t\tcase \"boolean\":\n\t\t\tcase \"null\": {\n\t\t\t\tconst hasEnum = Object.hasOwn(node, \"enum\");\n\t\t\t\tconst allowed = hasEnum ? node.enum : void 0;\n\t\t\t\tconst enumValid = isPlainJsonArray(allowed) && allowed.length > 0 && allowed.every((entry) => scalarMatches(schemaType, entry));\n\t\t\t\tif (hasEnum && !enumValid) violations.push(`${path}.enum must be a non-empty array of ${schemaType} values`);\n\t\t\t\tconst hasConst = Object.hasOwn(node, \"const\");\n\t\t\t\tconst declaredConst = hasConst ? node.const : void 0;\n\t\t\t\tconst constValid = scalarMatches(schemaType, declaredConst);\n\t\t\t\tif (hasConst) {\n\t\t\t\t\tif (!constValid) violations.push(`${path}.const must be a ${schemaType} value`);\n\t\t\t\t\telse if (enumValid && !allowed.includes(declaredConst)) violations.push(`${path}.const must be one of ${path}.enum when both are declared`);\n\t\t\t\t}\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\t/* v8 ignore next -- schemaType was narrowed from the closed SCHEMA_TYPES table above. */\n\t\t\tdefault: assertNever(schemaType, \"JsonSchemaType\");\n\t\t}\n\t}\n}\n/**\n* Assert the enforced subset plus the object-root constraint retained by\n* subagent and workflow structured outputs.\n* @param schema - untrusted caller-supplied schema.\n* @returns Assertion that the schema belongs to the supported subset and has an object root.\n*/\nfunction assertObjectJsonSchema(schema) {\n\tconst violations = [];\n\tcheckSchemaNode(schema, \"schema\", violations, /* @__PURE__ */ new Set());\n\tif (violations.length === 0 && (!isJsonSchemaRecord(schema) || !Object.hasOwn(schema, \"type\") || schema.type !== \"object\")) violations.push(\"schema.type must be \\\"object\\\" (structured output is object-rooted)\");\n\tif (violations.length > 0) throw new JsonSchemaError(violations);\n}\n//#endregion\n//#region packages/workflow/workflow/src/index.ts\n/**\n* Typed error for workflow-seam failures. Extends {@link HarnessError}, so the\n* `code` is machine-routable taxonomy. `fatal` drives the combinator\n* discipline: `parallel()`/`pipeline()` re-throw a fatal error (a typo'd\n* option or a tripped cap must kill the script loudly), and reserve the\n* per-item `null` for child-run failures and ordinary in-stage script errors.\n* Every {@link WorkflowErrorCode} is fatal; the flag exists so the\n* distinction is explicit at every catch site rather than implied.\n*/\nvar WorkflowError = class extends HarnessError {\n\t/** Whether combinators must propagate this error instead of nulling the item. */\n\tfatal;\n\tconstructor(message, code, options) {\n\t\tsuper(message, code, options);\n\t\tthis.name = \"WorkflowError\";\n\t\tthis.fatal = options?.fatal ?? true;\n\t}\n};\n/**\n* Whether combinators must re-throw `error` instead of mapping the item to `null`.\n* @param error - any thrown value; fatality is host `instanceof` (unforgeable from a script realm).\n* @returns true iff `error` is a {@link WorkflowError} whose `fatal` flag is set.\n*/\nfunction isFatalWorkflowError(error) {\n\treturn error instanceof WorkflowError && error.fatal;\n}\n//#endregion\n//#region packages/workflow/workflow-ptc/src/runtime.ts\n/**\n* Workflow VM hooks, child callbacks, ordinary concurrency limits and result serialization.\n* PTC owns process confinement and cancellation. Fatal hook and provider failures propagate\n* through combinators; ordinary child failures and stage errors become per-item nulls.\n* @module @deepseek-ai/dsh-workflow-ptc/runtime\n*/\n/** The `agent()` options the script may pass; everything else rejects loud. */\nconst SUPPORTED_AGENT_OPTIONS = new Set([\n\t\"label\",\n\t\"phase\",\n\t\"schema\",\n\t\"provider\",\n\t\"model\"\n]);\n/** Deferred Claude Code options we name explicitly in the rejection message. */\nconst DEFERRED_AGENT_OPTIONS = new Set([\n\t\"effort\",\n\t\"isolation\",\n\t\"agentType\"\n]);\n/** Flatten a child's final output blocks to text (the non-schema `agent()` result). */\nfunction outputText(blocks) {\n\treturn blocks.filter((block) => block.type === \"text\").map((block) => block.text).join(\"\");\n}\n/** A short display label derived from the prompt when the script passes none. */\nfunction defaultLabel(prompt) {\n\tconst newline = prompt.indexOf(\"\\n\");\n\tconst line = newline === -1 ? prompt : prompt.slice(0, newline);\n\treturn line.length <= 48 ? line : `${line.slice(0, 47)}…`;\n}\n/**\n* One script execution inside the confined Node process. The host owns\n* cancellation and cleanup of any dropped child work.\n*/\nvar WorkflowExecution = class {\n\tlimits;\n\tobserver;\n\tchildren;\n\t/** 1-based count of `agent()` calls started (the `agentsStarted` result field). */\n\tstarted = 0;\n\tactiveSlots = 0;\n\tslotWaiters = [];\n\tcurrentPhase;\n\tcontext;\n\tcompiled;\n\tconstructor(meta, body, args, limits, observer, children) {\n\t\tthis.limits = limits;\n\t\tthis.observer = observer;\n\t\tthis.children = children;\n\t\ttry {\n\t\t\tthis.compiled = new vm.Script(`(async () => {\\n${body}\\n})()`, {\n\t\t\t\tfilename: `workflow:${meta.name}`,\n\t\t\t\tlineOffset: -1\n\t\t\t});\n\t\t} catch (error) {\n\t\t\tthrow new WorkflowError(`workflow script does not parse: ${String(error)}`, \"SCRIPT_PARSE\", { cause: error });\n\t\t}\n\t\tthis.context = vm.createContext({}, { name: `workflow:${meta.name}` });\n\t\tconst globals = {\n\t\t\tagent: (prompt, opts) => this.contain(this.agent(prompt, opts)),\n\t\t\tparallel: (thunks) => this.contain(this.parallel(thunks)),\n\t\t\tpipeline: (items, ...stages) => this.contain(this.pipeline(items, stages)),\n\t\t\tphase: (title) => {\n\t\t\t\tthis.phase(title);\n\t\t\t},\n\t\t\tlog: (message) => {\n\t\t\t\tthis.log(message);\n\t\t\t},\n\t\t\targs\n\t\t};\n\t\tfor (const [key, value] of Object.entries(globals)) this.context[key] = typeof value === \"function\" ? Object.freeze(value) : value;\n\t}\n\t/**\n\t* Run the script and materialize its JSON return value.\n\t* @returns A completed or error result; script failures never reject.\n\t*/\n\tasync drive() {\n\t\ttry {\n\t\t\tconst scriptPromise = this.compiled.runInContext(this.context, { timeout: this.limits.syncTimeoutMs });\n\t\t\tconst raw = await this.contain(Promise.resolve(scriptPromise));\n\t\t\treturn {\n\t\t\t\tvalue: raw === void 0 ? null : this.materializeResult(raw),\n\t\t\t\tstopReason: \"completed\",\n\t\t\t\tagentsStarted: this.started\n\t\t\t};\n\t\t} catch (error) {\n\t\t\treturn {\n\t\t\t\tvalue: null,\n\t\t\t\tstopReason: \"error\",\n\t\t\t\terror: renderThrown(error),\n\t\t\t\tagentsStarted: this.started\n\t\t\t};\n\t\t}\n\t}\n\t/**\n\t* Attach a no-op rejection consumer WITHOUT changing what the caller\n\t* receives: if the script drops the promise, a host rejection cannot become\n\t* an unhandled rejection that kills the process; if\n\t* the script does await it, it still observes the rejection.\n\t*/\n\tcontain(promise) {\n\t\tpromise.catch(() => {});\n\t\treturn promise;\n\t}\n\t/** Materialize the script's return value; violations become RESULT_UNSERIALIZABLE. */\n\tmaterializeResult(raw) {\n\t\ttry {\n\t\t\treturn materializeFromRealm(raw, \"workflow result\");\n\t\t} catch (error) {\n\t\t\t/* v8 ignore next -- defensive rethrow arm: materializeFromRealm only throws MaterializeError */\n\t\t\tif (!(error instanceof MaterializeError)) throw error;\n\t\t\tthrow new WorkflowError(`the workflow's return value is not plain JSON data — ${error.message}. Return only JSON-serializable objects/arrays/scalars.`, \"RESULT_UNSERIALIZABLE\", { cause: error });\n\t\t}\n\t}\n\t/** Acquire one concurrency slot in FIFO order. */\n\tacquireSlot() {\n\t\tif (this.activeSlots < this.limits.maxConcurrentAgents) {\n\t\t\tthis.activeSlots += 1;\n\t\t\treturn Promise.resolve();\n\t\t}\n\t\treturn new Promise((resolve) => {\n\t\t\tthis.slotWaiters.push(() => {\n\t\t\t\tthis.activeSlots += 1;\n\t\t\t\tresolve();\n\t\t\t});\n\t\t});\n\t}\n\treleaseSlot() {\n\t\tthis.activeSlots -= 1;\n\t\tconst next = this.slotWaiters.shift();\n\t\tif (next) next();\n\t}\n\t/** The `agent(prompt, opts)` hook. */\n\tasync agent(rawPrompt, rawOpts) {\n\t\tif (typeof rawPrompt !== \"string\" || rawPrompt.length === 0) throw new WorkflowError(\"agent() requires a non-empty prompt string\", \"INVALID_ARGUMENT\");\n\t\tconst opts = this.readAgentOptions(rawOpts);\n\t\tif (this.started >= this.limits.maxTotalAgents) throw new WorkflowError(`this run reached its total agent cap (${this.limits.maxTotalAgents}) — a runaway-loop backstop; raise the applicable maxTotalAgents limit if the scale is intentional`, \"AGENT_CAP\");\n\t\tthis.started += 1;\n\t\tconst seq = this.started;\n\t\tconst label = opts.label ?? defaultLabel(rawPrompt);\n\t\tconst phase = opts.phase ?? this.currentPhase;\n\t\tawait this.acquireSlot();\n\t\ttry {\n\t\t\tlet run;\n\t\t\ttry {\n\t\t\t\trun = await this.children.startAgent({\n\t\t\t\t\tprompt: rawPrompt,\n\t\t\t\t\t...opts.schema !== void 0 ? { schema: opts.schema } : {},\n\t\t\t\t\t...opts.provider !== void 0 ? { provider: opts.provider } : {},\n\t\t\t\t\t...opts.model !== void 0 ? { model: opts.model } : {}\n\t\t\t\t});\n\t\t\t} catch (error) {\n\t\t\t\tthrow new WorkflowError(`agent() could not start a child: ${renderThrown(error)}`, \"AGENT_START\", { cause: error });\n\t\t\t}\n\t\t\tconst info = {\n\t\t\t\tseq,\n\t\t\t\tlabel,\n\t\t\t\t...phase !== void 0 ? { phase } : {},\n\t\t\t\tchildId: brandString(run.id)\n\t\t\t};\n\t\t\tthis.observer.agentStart(info);\n\t\t\ttry {\n\t\t\t\tlet result;\n\t\t\t\ttry {\n\t\t\t\t\tresult = await run.result;\n\t\t\t\t} catch (error) {\n\t\t\t\t\tthis.observer.agentEnd({\n\t\t\t\t\t\t...info,\n\t\t\t\t\t\toutcome: \"failed\"\n\t\t\t\t\t});\n\t\t\t\t\tthrow new WorkflowError(`child agent run failed: ${renderThrown(error)}`, \"AGENT_RESULT\", { cause: error });\n\t\t\t\t}\n\t\t\t\tif (result.stopReason === \"completed\") {\n\t\t\t\t\tif (opts.schema !== void 0) {\n\t\t\t\t\t\tif (result.structured === void 0) {\n\t\t\t\t\t\t\tthis.observer.agentEnd({\n\t\t\t\t\t\t\t\t...info,\n\t\t\t\t\t\t\t\toutcome: \"failed\"\n\t\t\t\t\t\t\t});\n\t\t\t\t\t\t\treturn null;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tthis.observer.agentEnd({\n\t\t\t\t\t\t\t...info,\n\t\t\t\t\t\t\toutcome: \"completed\"\n\t\t\t\t\t\t});\n\t\t\t\t\t\treturn result.structured;\n\t\t\t\t\t}\n\t\t\t\t\tthis.observer.agentEnd({\n\t\t\t\t\t\t...info,\n\t\t\t\t\t\toutcome: \"completed\"\n\t\t\t\t\t});\n\t\t\t\t\treturn outputText(result.output);\n\t\t\t\t}\n\t\t\t\tthis.observer.agentEnd({\n\t\t\t\t\t...info,\n\t\t\t\t\toutcome: \"failed\"\n\t\t\t\t});\n\t\t\t\treturn null;\n\t\t\t} finally {\n\t\t\t\tawait run.dispose();\n\t\t\t}\n\t\t} finally {\n\t\t\tthis.releaseSlot();\n\t\t}\n\t}\n\t/** Materialize + validate the `agent()` options bag from the realm. */\n\treadAgentOptions(rawOpts) {\n\t\tif (rawOpts === void 0) return {};\n\t\tlet opts;\n\t\ttry {\n\t\t\topts = materializeFromRealm(rawOpts, \"agent() options\");\n\t\t} catch (error) {\n\t\t\t/* v8 ignore next -- defensive rethrow arm: materializeFromRealm only throws MaterializeError */\n\t\t\tif (!(error instanceof MaterializeError)) throw error;\n\t\t\tthrow new WorkflowError(`agent() options must be plain JSON data — ${error.message}`, \"INVALID_ARGUMENT\", { cause: error });\n\t\t}\n\t\tif (typeof opts !== \"object\" || opts === null || Array.isArray(opts)) throw new WorkflowError(\"agent() options must be an object\", \"INVALID_ARGUMENT\");\n\t\tconst record = opts;\n\t\tfor (const key of Object.keys(record)) {\n\t\t\tif (SUPPORTED_AGENT_OPTIONS.has(key)) continue;\n\t\t\tif (DEFERRED_AGENT_OPTIONS.has(key)) throw new WorkflowError(`agent() option \"${key}\" is deferred and not supported by this engine (supported: label, phase, schema, provider, model)`, \"UNSUPPORTED_OPTION\");\n\t\t\tthrow new WorkflowError(`agent() option \"${key}\" is not recognized (supported: label, phase, schema, provider, model)`, \"UNSUPPORTED_OPTION\");\n\t\t}\n\t\tfor (const key of [\n\t\t\t\"label\",\n\t\t\t\"phase\",\n\t\t\t\"provider\",\n\t\t\t\"model\"\n\t\t]) if (record[key] !== void 0 && typeof record[key] !== \"string\") throw new WorkflowError(`agent() option \"${key}\" must be a string`, \"INVALID_ARGUMENT\");\n\t\tlet schema;\n\t\tif (record.schema !== void 0) try {\n\t\t\tassertObjectJsonSchema(record.schema);\n\t\t\tschema = record.schema;\n\t\t} catch (error) {\n\t\t\t/* v8 ignore next -- defensive rethrow arm: assertObjectJsonSchema only throws JsonSchemaError */\n\t\t\tif (!(error instanceof JsonSchemaError)) throw error;\n\t\t\tthrow new WorkflowError(`agent() schema is outside the supported subset — ${error.message}`, \"UNSUPPORTED_SCHEMA\", { cause: error });\n\t\t}\n\t\treturn {\n\t\t\t...record.label !== void 0 ? { label: record.label } : {},\n\t\t\t...record.phase !== void 0 ? { phase: record.phase } : {},\n\t\t\t...record.provider !== void 0 ? { provider: record.provider } : {},\n\t\t\t...record.model !== void 0 ? { model: record.model } : {},\n\t\t\t...schema !== void 0 ? { schema } : {}\n\t\t};\n\t}\n\t/** The `parallel(thunks)` hook: each thunk caught → `null`; fatal errors propagate. */\n\tasync parallel(rawThunks) {\n\t\tif (!Array.isArray(rawThunks)) throw new WorkflowError(\"parallel() requires an array of zero-argument functions\", \"INVALID_ARGUMENT\");\n\t\tthis.assertItemCap(rawThunks.length, \"parallel()\");\n\t\tconst thunks = rawThunks.map((thunk, index) => {\n\t\t\tif (typeof thunk !== \"function\") throw new WorkflowError(`parallel() item ${index} is not a function`, \"INVALID_ARGUMENT\");\n\t\t\treturn thunk;\n\t\t});\n\t\treturn Promise.all(thunks.map(async (thunk) => {\n\t\t\ttry {\n\t\t\t\treturn await thunk();\n\t\t\t} catch (error) {\n\t\t\t\tif (isFatalWorkflowError(error)) throw error;\n\t\t\t\treturn null;\n\t\t\t}\n\t\t}));\n\t}\n\t/** The `pipeline(items, ...stages)` hook: per-item stage chains, NO cross-stage barrier. */\n\tasync pipeline(rawItems, rawStages) {\n\t\tif (!Array.isArray(rawItems)) throw new WorkflowError(\"pipeline() requires an items array\", \"INVALID_ARGUMENT\");\n\t\tthis.assertItemCap(rawItems.length, \"pipeline()\");\n\t\tif (rawStages.length === 0) throw new WorkflowError(\"pipeline() requires at least one stage function\", \"INVALID_ARGUMENT\");\n\t\tconst stages = rawStages.map((stage, index) => {\n\t\t\tif (typeof stage !== \"function\") throw new WorkflowError(`pipeline() stage ${index} is not a function`, \"INVALID_ARGUMENT\");\n\t\t\treturn stage;\n\t\t});\n\t\treturn Promise.all(rawItems.map(async (item, index) => {\n\t\t\tlet value = item;\n\t\t\ttry {\n\t\t\t\tfor (const stage of stages) value = await stage(value, item, index);\n\t\t\t\treturn value;\n\t\t\t} catch (error) {\n\t\t\t\tif (isFatalWorkflowError(error)) throw error;\n\t\t\t\treturn null;\n\t\t\t}\n\t\t}));\n\t}\n\tassertItemCap(length, hook) {\n\t\tif (length > this.limits.maxItemsPerCall) throw new WorkflowError(`${hook} received ${length} items — over the per-call cap (${this.limits.maxItemsPerCall}); split the work or raise maxItemsPerCall in the engine config`, \"ITEM_CAP\");\n\t}\n\t/** The `phase(title)` hook: sets the current label for subsequent `agent()` calls and notifies observers. */\n\tphase(title) {\n\t\tif (typeof title !== \"string\" || title.length === 0) throw new WorkflowError(\"phase() requires a non-empty title string\", \"INVALID_ARGUMENT\");\n\t\tthis.currentPhase = title;\n\t\tthis.observer.phase(title);\n\t}\n\t/** The `log(message)` hook: narration to observers. */\n\tlog(message) {\n\t\tif (typeof message !== \"string\") throw new WorkflowError(\"log() requires a message string\", \"INVALID_ARGUMENT\");\n\t\tthis.observer.log(message);\n\t}\n};\n//#endregion\n//#region packages/workflow/workflow-ptc/src/guest.ts\n/**\n* Run a workflow with one progress batch in flight. Drain progress before child\n* disposal and the terminal result; PTC and the host own cancellation and cleanup.\n* @param host - JSON callbacks owned by this workflow run.\n* @returns The script result after progress delivery; initialization failures reject.\n*/\nasync function runWorkflowGuest(host) {\n\tconst init = await host.begin({});\n\tlet queued = [];\n\tlet inFlight;\n\tlet progressError;\n\tconst flush = () => {\n\t\tif (inFlight !== void 0 || queued.length === 0) return;\n\t\tconst batch = queued;\n\t\tqueued = [];\n\t\tinFlight = host.progress(batch).then(() => {\n\t\t\tinFlight = void 0;\n\t\t\tflush();\n\t\t}, (error) => {\n\t\t\tprogressError = renderThrown(error);\n\t\t\tqueued = [];\n\t\t\tinFlight = void 0;\n\t\t});\n\t};\n\tconst send = (event) => {\n\t\tif (progressError !== void 0) return;\n\t\tqueued.push(event);\n\t\tflush();\n\t};\n\tconst drain = async () => {\n\t\twhile (inFlight !== void 0) await inFlight;\n\t};\n\tconst result = await new WorkflowExecution(init.meta, init.body, init.args, init.limits, {\n\t\tphase: (title) => {\n\t\t\tsend({\n\t\t\t\ttype: \"phase\",\n\t\t\t\ttitle\n\t\t\t});\n\t\t},\n\t\tlog: (message) => {\n\t\t\tsend({\n\t\t\t\ttype: \"log\",\n\t\t\t\tmessage\n\t\t\t});\n\t\t},\n\t\tagentStart: (info) => {\n\t\t\tsend({\n\t\t\t\ttype: \"agent-start\",\n\t\t\t\tinfo\n\t\t\t});\n\t\t},\n\t\tagentEnd: (info) => {\n\t\t\tsend({\n\t\t\t\ttype: \"agent-end\",\n\t\t\t\tinfo\n\t\t\t});\n\t\t}\n\t}, { async startAgent(request) {\n\t\tconst { callId, childId } = await host.startChild(request);\n\t\tconst result = host.childResult({ callId });\n\t\tresult.catch(() => {});\n\t\treturn {\n\t\t\tid: childId,\n\t\t\tresult,\n\t\t\tasync dispose() {\n\t\t\t\tawait drain();\n\t\t\t\tawait host.disposeChild({ callId });\n\t\t\t}\n\t\t};\n\t} }).drive();\n\tawait drain();\n\treturn progressError === void 0 ? result : {\n\t\tvalue: null,\n\t\tstopReason: \"error\",\n\t\terror: progressError,\n\t\tagentsStarted: result.agentsStarted\n\t};\n}\n//#endregion\nexport { runWorkflowGuest };\n//# sourceURL=dsh-workflow-guest.js\n"
diff --git a/packages/workflow/workflow/package.json b/packages/workflow/workflow/package.json
index 32f8cacb71..b82a217993 100644
--- a/packages/workflow/workflow/package.json
+++ b/packages/workflow/workflow/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-workflow",
   "description": "Workflow capability seam: ctx.workflowEngine service, run vocabulary, and workflow/* events",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/workspace/workspace/package.json b/packages/workspace/workspace/package.json
index c030225563..9178b26d12 100644
--- a/packages/workspace/workspace/package.json
+++ b/packages/workspace/workspace/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-workspace",
   "description": "Workspace entity registry (ctx.workspaceRegistry): durable workspace records with validated session attachment over the domain data form for the DeepSeek Harness",
-  "version": "0.2.1-rc.4",
+  "version": "0.2.2-alpha.2",
   "publishConfig": {
     "access": "public"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 9df4b4b512..afc4a7eac6 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -336,9 +336,6 @@ importers:
       '@deepseek-ai/dsh-cordis-client-runner':
         specifier: workspace:*
         version: link:../../packages/extensions/cordis-client-runner
-      '@deepseek-ai/dsh-cua-bundle':
-        specifier: workspace:*
-        version: link:../../packages/experimental/cua-bundle
       '@deepseek-ai/dsh-experimental-agent-team-profile':
         specifier: workspace:*
         version: link:../../packages/experimental/agent-team-profile
@@ -357,6 +354,9 @@ importers:
       '@deepseek-ai/dsh-experimental-inspector-profile':
         specifier: workspace:*
         version: link:../../packages/experimental/inspector-profile
+      '@deepseek-ai/dsh-experimental-liveshare':
+        specifier: workspace:*
+        version: link:../../packages/experimental/liveshare
       '@deepseek-ai/dsh-experimental-plugin-market-bundle':
         specifier: workspace:*
         version: link:../../packages/experimental/plugin-market-bundle
@@ -743,6 +743,9 @@ importers:
       '@deepseek-ai/dsh-client-shortcuts':
         specifier: workspace:*
         version: link:../../packages/client/shortcuts
+      '@deepseek-ai/dsh-client-ui-file-actions':
+        specifier: workspace:*
+        version: link:../../packages/client/ui-file-actions
       '@deepseek-ai/dsh-client-ui-primitives':
         specifier: workspace:*
         version: link:../../packages/client/ui-primitives
@@ -3002,6 +3005,9 @@ importers:
       '@deepseek-ai/dsh-client-ui-commands':
         specifier: workspace:*
         version: link:../../client/ui-commands
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../../client/ui-context-menu
       '@deepseek-ai/dsh-client-ui-conversation':
         specifier: workspace:*
         version: link:../../client/ui-conversation
@@ -3020,6 +3026,9 @@ importers:
       '@deepseek-ai/dsh-client-ui-entry-customization':
         specifier: workspace:*
         version: link:../../client/ui-entry-customization
+      '@deepseek-ai/dsh-client-ui-file-actions':
+        specifier: workspace:*
+        version: link:../../client/ui-file-actions
       '@deepseek-ai/dsh-client-ui-file-drag':
         specifier: workspace:*
         version: link:../../client/ui-file-drag
@@ -3771,6 +3780,9 @@ importers:
       '@deepseek-ai/dsh-client-ui-chat':
         specifier: workspace:*
         version: link:../ui-chat
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-conversation':
         specifier: workspace:*
         version: link:../ui-conversation
@@ -3874,6 +3886,9 @@ importers:
       '@deepseek-ai/dsh-client-ui-approval':
         specifier: workspace:*
         version: link:../ui-approval
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-conversation':
         specifier: workspace:*
         version: link:../ui-conversation
@@ -4019,6 +4034,54 @@ importers:
         specifier: ^18.2.0
         version: 18.3.1
 
+  packages/client/ui-context-menu:
+    devDependencies:
+      '@deepseek-ai/cordis':
+        specifier: workspace:~
+        version: link:../../../vendor/cordis
+      '@deepseek-ai/dsh-brand':
+        specifier: workspace:*
+        version: link:../../util/brand
+      '@deepseek-ai/dsh-client-locale':
+        specifier: workspace:*
+        version: link:../locale
+      '@deepseek-ai/dsh-client-shortcuts':
+        specifier: workspace:*
+        version: link:../shortcuts
+      '@deepseek-ai/dsh-client-store':
+        specifier: workspace:*
+        version: link:../store
+      '@deepseek-ai/dsh-client-test-runtime':
+        specifier: workspace:*
+        version: link:../../test-support/client-runtime
+      '@deepseek-ai/dsh-client-ui-dockkit':
+        specifier: workspace:*
+        version: link:../ui-dockkit
+      '@deepseek-ai/dsh-client-ui-layout':
+        specifier: workspace:*
+        version: link:../ui-layout
+      '@deepseek-ai/dsh-client-ui-primitives':
+        specifier: workspace:*
+        version: link:../ui-primitives
+      '@deepseek-ai/dsh-client-ui-renderer':
+        specifier: workspace:*
+        version: link:../ui-renderer
+      '@deepseek-ai/dsh-client-ui-slots':
+        specifier: workspace:*
+        version: link:../ui-slots
+      '@deepseek-ai/dsh-session':
+        specifier: workspace:*
+        version: link:../../core/session
+      '@deepseek-ai/schemastery':
+        specifier: link:../../../vendor/schemastery
+        version: link:../../../vendor/schemastery
+      react:
+        specifier: ^18.2.0
+        version: 18.3.1
+      react-dom:
+        specifier: ^18.2.0
+        version: 18.3.1(react@18.3.1)
+
   packages/client/ui-conversation:
     dependencies:
       '@deepseek-ai/schemastery':
@@ -4064,6 +4127,9 @@ importers:
       '@deepseek-ai/dsh-client-test-runtime':
         specifier: workspace:*
         version: link:../../test-support/client-runtime
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-layout':
         specifier: workspace:*
         version: link:../ui-layout
@@ -4197,6 +4263,9 @@ importers:
       '@deepseek-ai/dsh-client-ui-chat':
         specifier: workspace:*
         version: link:../ui-chat
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-conversation':
         specifier: workspace:*
         version: link:../ui-conversation
@@ -4402,6 +4471,51 @@ importers:
         specifier: ^18.2.0
         version: 18.3.1(react@18.3.1)
 
+  packages/client/ui-file-actions:
+    devDependencies:
+      '@deepseek-ai/cordis':
+        specifier: workspace:~
+        version: link:../../../vendor/cordis
+      '@deepseek-ai/dsh-api-session-controller':
+        specifier: workspace:*
+        version: link:../../api/session-controller
+      '@deepseek-ai/dsh-api-workspace-files':
+        specifier: workspace:*
+        version: link:../../api/workspace-files
+      '@deepseek-ai/dsh-client-locale':
+        specifier: workspace:*
+        version: link:../locale
+      '@deepseek-ai/dsh-client-test-runtime':
+        specifier: workspace:*
+        version: link:../../test-support/client-runtime
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
+      '@deepseek-ai/dsh-client-ui-primitives':
+        specifier: workspace:*
+        version: link:../ui-primitives
+      '@deepseek-ai/dsh-client-ui-renderer':
+        specifier: workspace:*
+        version: link:../ui-renderer
+      '@deepseek-ai/dsh-client-ui-slots':
+        specifier: workspace:*
+        version: link:../ui-slots
+      '@deepseek-ai/dsh-session':
+        specifier: workspace:*
+        version: link:../../core/session
+      '@deepseek-ai/dsh-util-file-drag':
+        specifier: workspace:*
+        version: link:../../util/file-drag
+      '@deepseek-ai/dsh-util-workspace-path':
+        specifier: workspace:*
+        version: link:../../util/workspace-path
+      mime:
+        specifier: ^4.1.0
+        version: 4.1.1
+      react:
+        specifier: ^18.2.0
+        version: 18.3.1
+
   packages/client/ui-file-drag:
     devDependencies:
       '@deepseek-ai/cordis':
@@ -4764,6 +4878,9 @@ importers:
       '@deepseek-ai/dsh-api-session-controller':
         specifier: workspace:*
         version: link:../../api/session-controller
+      '@deepseek-ai/dsh-api-workspace-files':
+        specifier: workspace:*
+        version: link:../../api/workspace-files
       '@deepseek-ai/dsh-client-locale':
         specifier: workspace:*
         version: link:../locale
@@ -4776,12 +4893,18 @@ importers:
       '@deepseek-ai/dsh-client-test-runtime':
         specifier: workspace:*
         version: link:../../test-support/client-runtime
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-conversation':
         specifier: workspace:*
         version: link:../ui-conversation
       '@deepseek-ai/dsh-client-ui-deliverables':
         specifier: workspace:*
         version: link:../ui-deliverables
+      '@deepseek-ai/dsh-client-ui-file-actions':
+        specifier: workspace:*
+        version: link:../ui-file-actions
       '@deepseek-ai/dsh-client-ui-layout':
         specifier: workspace:*
         version: link:../ui-layout
@@ -4794,15 +4917,24 @@ importers:
       '@deepseek-ai/dsh-client-ui-session':
         specifier: workspace:*
         version: link:../ui-session
+      '@deepseek-ai/dsh-client-ui-sidebar-browser':
+        specifier: workspace:*
+        version: link:../ui-sidebar-browser
       '@deepseek-ai/dsh-client-ui-sidebar-documentpreview':
         specifier: workspace:*
         version: link:../ui-sidebar-documentpreview
       '@deepseek-ai/dsh-client-ui-sidebar-files':
         specifier: workspace:*
         version: link:../ui-sidebar-files
+      '@deepseek-ai/dsh-client-ui-sidebar-right':
+        specifier: workspace:*
+        version: link:../ui-sidebar-right
       '@deepseek-ai/dsh-client-ui-slots':
         specifier: workspace:*
         version: link:../ui-slots
+      '@deepseek-ai/dsh-client-ui-workspace':
+        specifier: workspace:*
+        version: link:../ui-workspace
       '@deepseek-ai/dsh-host-open-in-app':
         specifier: workspace:*
         version: link:../../host/open-in-app
@@ -4812,6 +4944,9 @@ importers:
       '@deepseek-ai/dsh-session':
         specifier: workspace:*
         version: link:../../core/session
+      '@deepseek-ai/dsh-util-workspace-path':
+        specifier: workspace:*
+        version: link:../../util/workspace-path
       react:
         specifier: ^18.2.0
         version: 18.3.1
@@ -5185,6 +5320,9 @@ importers:
       '@deepseek-ai/dsh-client-test-runtime':
         specifier: workspace:*
         version: link:../../test-support/client-runtime
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-conversation':
         specifier: workspace:*
         version: link:../ui-conversation
@@ -6045,6 +6183,9 @@ importers:
       '@deepseek-ai/dsh-client-test-runtime':
         specifier: workspace:*
         version: link:../../test-support/client-runtime
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-dockkit':
         specifier: workspace:*
         version: link:../ui-dockkit
@@ -6150,6 +6291,9 @@ importers:
       '@deepseek-ai/dsh-client-test-runtime':
         specifier: workspace:*
         version: link:../../test-support/client-runtime
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-dockkit':
         specifier: workspace:*
         version: link:../ui-dockkit
@@ -6216,6 +6360,9 @@ importers:
       '@deepseek-ai/dsh-client-test-runtime':
         specifier: workspace:*
         version: link:../../test-support/client-runtime
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-conversation':
         specifier: workspace:*
         version: link:../ui-conversation
@@ -6538,6 +6685,9 @@ importers:
       '@deepseek-ai/dsh-api-remotes':
         specifier: workspace:*
         version: link:../../api/remotes
+      '@deepseek-ai/dsh-api-session-controller':
+        specifier: workspace:*
+        version: link:../../api/session-controller
       '@deepseek-ai/dsh-api-workspace-controller':
         specifier: workspace:*
         version: link:../../api/workspace-controller
@@ -6556,6 +6706,9 @@ importers:
       '@deepseek-ai/dsh-client-ui-chat':
         specifier: workspace:*
         version: link:../ui-chat
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-conversation':
         specifier: workspace:*
         version: link:../ui-conversation
@@ -6890,6 +7043,9 @@ importers:
       '@deepseek-ai/dsh-client-test-runtime':
         specifier: workspace:*
         version: link:../../test-support/client-runtime
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../ui-context-menu
       '@deepseek-ai/dsh-client-ui-conversation':
         specifier: workspace:*
         version: link:../ui-conversation
@@ -9874,6 +10030,9 @@ importers:
       '@deepseek-ai/cordis':
         specifier: workspace:~
         version: link:../../../vendor/cordis
+      '@deepseek-ai/dsh-brand':
+        specifier: workspace:*
+        version: link:../../util/brand
       '@deepseek-ai/dsh-experimental-forge':
         specifier: workspace:*
         version: link:../forge
@@ -10198,6 +10357,247 @@ importers:
         specifier: ^4.3.2
         version: 4.3.2
 
+  packages/experimental/liveshare:
+    dependencies:
+      '@deepseek-ai/dsh-atomic-write':
+        specifier: workspace:*
+        version: link:../../util/atomic-write
+      '@deepseek-ai/dsh-brand':
+        specifier: workspace:*
+        version: link:../../util/brand
+      '@deepseek-ai/dsh-experimental-liveshare-protocol':
+        specifier: workspace:*
+        version: link:../liveshare-protocol
+      '@deepseek-ai/dsh-session':
+        specifier: workspace:*
+        version: link:../../core/session
+      '@deepseek-ai/dsh-typert-protocol':
+        specifier: workspace:*
+        version: link:../../typert/protocol
+      '@deepseek-ai/dsh-util-values':
+        specifier: workspace:*
+        version: link:../../util/values
+      ws:
+        specifier: ^8.18.3
+        version: 8.21.3
+      zod:
+        specifier: 4.4.3
+        version: 4.4.3
+    devDependencies:
+      '@deepseek-ai/cordis':
+        specifier: workspace:~
+        version: link:../../../vendor/cordis
+      '@deepseek-ai/cordis-plugin-loader':
+        specifier: workspace:~
+        version: link:../../../vendor/loader
+      '@deepseek-ai/dsh-agent':
+        specifier: workspace:*
+        version: link:../../core/agent
+      '@deepseek-ai/dsh-agent-loop-testkit':
+        specifier: workspace:*
+        version: link:../../test-support/agent-loop-testkit
+      '@deepseek-ai/dsh-api-gateway':
+        specifier: workspace:*
+        version: link:../../api/gateway
+      '@deepseek-ai/dsh-api-remote-access':
+        specifier: workspace:*
+        version: link:../../api/remote-access
+      '@deepseek-ai/dsh-api-remotes':
+        specifier: workspace:*
+        version: link:../../api/remotes
+      '@deepseek-ai/dsh-api-session-controller':
+        specifier: workspace:*
+        version: link:../../api/session-controller
+      '@deepseek-ai/dsh-api-settings-controller':
+        specifier: workspace:*
+        version: link:../../api/settings-controller
+      '@deepseek-ai/dsh-api-workspace-controller':
+        specifier: workspace:*
+        version: link:../../api/workspace-controller
+      '@deepseek-ai/dsh-api-workspace-files':
+        specifier: workspace:*
+        version: link:../../api/workspace-files
+      '@deepseek-ai/dsh-client-connection':
+        specifier: workspace:*
+        version: link:../../client/connection
+      '@deepseek-ai/dsh-client-file-upload':
+        specifier: workspace:*
+        version: link:../../client/file-upload
+      '@deepseek-ai/dsh-client-locale':
+        specifier: workspace:*
+        version: link:../../client/locale
+      '@deepseek-ai/dsh-client-modules':
+        specifier: workspace:*
+        version: link:../../client/modules
+      '@deepseek-ai/dsh-client-resources':
+        specifier: workspace:*
+        version: link:../../client/resources
+      '@deepseek-ai/dsh-client-shortcuts':
+        specifier: workspace:*
+        version: link:../../client/shortcuts
+      '@deepseek-ai/dsh-client-store':
+        specifier: workspace:*
+        version: link:../../client/store
+      '@deepseek-ai/dsh-client-test-runtime':
+        specifier: workspace:*
+        version: link:../../test-support/client-runtime
+      '@deepseek-ai/dsh-client-ui-agent-preset':
+        specifier: workspace:*
+        version: link:../../client/ui-agent-preset
+      '@deepseek-ai/dsh-client-ui-approval':
+        specifier: workspace:*
+        version: link:../../client/ui-approval
+      '@deepseek-ai/dsh-client-ui-attachment':
+        specifier: workspace:*
+        version: link:../../client/ui-attachment
+      '@deepseek-ai/dsh-client-ui-brand-official':
+        specifier: workspace:*
+        version: link:../../client/ui-brand-official
+      '@deepseek-ai/dsh-client-ui-chat':
+        specifier: workspace:*
+        version: link:../../client/ui-chat
+      '@deepseek-ai/dsh-client-ui-commands':
+        specifier: workspace:*
+        version: link:../../client/ui-commands
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../../client/ui-context-menu
+      '@deepseek-ai/dsh-client-ui-conversation':
+        specifier: workspace:*
+        version: link:../../client/ui-conversation
+      '@deepseek-ai/dsh-client-ui-deliverables':
+        specifier: workspace:*
+        version: link:../../client/ui-deliverables
+      '@deepseek-ai/dsh-client-ui-input-trigger':
+        specifier: workspace:*
+        version: link:../../client/ui-input-trigger
+      '@deepseek-ai/dsh-client-ui-jobs':
+        specifier: workspace:*
+        version: link:../../client/ui-jobs
+      '@deepseek-ai/dsh-client-ui-layout':
+        specifier: workspace:*
+        version: link:../../client/ui-layout
+      '@deepseek-ai/dsh-client-ui-plan':
+        specifier: workspace:*
+        version: link:../../client/ui-plan
+      '@deepseek-ai/dsh-client-ui-primitives':
+        specifier: workspace:*
+        version: link:../../client/ui-primitives
+      '@deepseek-ai/dsh-client-ui-reference':
+        specifier: workspace:*
+        version: link:../../client/ui-reference
+      '@deepseek-ai/dsh-client-ui-renderer':
+        specifier: workspace:*
+        version: link:../../client/ui-renderer
+      '@deepseek-ai/dsh-client-ui-session':
+        specifier: workspace:*
+        version: link:../../client/ui-session
+      '@deepseek-ai/dsh-client-ui-settings':
+        specifier: workspace:*
+        version: link:../../client/ui-settings
+      '@deepseek-ai/dsh-client-ui-sidebar':
+        specifier: workspace:*
+        version: link:../../client/ui-sidebar
+      '@deepseek-ai/dsh-client-ui-sidebar-right':
+        specifier: workspace:*
+        version: link:../../client/ui-sidebar-right
+      '@deepseek-ai/dsh-client-ui-slots':
+        specifier: workspace:*
+        version: link:../../client/ui-slots
+      '@deepseek-ai/dsh-client-ui-subagent':
+        specifier: workspace:*
+        version: link:../../client/ui-subagent
+      '@deepseek-ai/dsh-client-ui-theme':
+        specifier: workspace:*
+        version: link:../../client/ui-theme
+      '@deepseek-ai/dsh-client-ui-tool':
+        specifier: workspace:*
+        version: link:../../client/ui-tool
+      '@deepseek-ai/dsh-client-ui-trajectory':
+        specifier: workspace:*
+        version: link:../../client/ui-trajectory
+      '@deepseek-ai/dsh-client-ui-user-questions':
+        specifier: workspace:*
+        version: link:../../client/ui-user-questions
+      '@deepseek-ai/dsh-client-ui-workflow-run':
+        specifier: workspace:*
+        version: link:../../client/ui-workflow-run
+      '@deepseek-ai/dsh-client-ui-workspace':
+        specifier: workspace:*
+        version: link:../../client/ui-workspace
+      '@deepseek-ai/dsh-client-web':
+        specifier: workspace:*
+        version: link:../../client/web
+      '@deepseek-ai/dsh-cua':
+        specifier: workspace:*
+        version: link:../cua
+      '@deepseek-ai/dsh-experimental-api-speech-to-text':
+        specifier: workspace:*
+        version: link:../api-speech-to-text
+      '@deepseek-ai/dsh-experimental-claude-code-mods':
+        specifier: workspace:*
+        version: link:../claude-code-mods
+      '@deepseek-ai/dsh-experimental-client-ui-cot-translation':
+        specifier: workspace:*
+        version: link:../client-ui-cot-translation
+      '@deepseek-ai/dsh-fs':
+        specifier: workspace:*
+        version: link:../../fs/fs
+      '@deepseek-ai/dsh-fs-local':
+        specifier: workspace:*
+        version: link:../../fs/fs-local
+      '@deepseek-ai/dsh-fs-observation-policy':
+        specifier: workspace:*
+        version: link:../../fs/fs-observation-policy
+      '@deepseek-ai/dsh-fs-sandbox':
+        specifier: workspace:*
+        version: link:../../fs/fs-sandbox
+      '@deepseek-ai/dsh-host-webserver':
+        specifier: workspace:*
+        version: link:../../host/webserver
+      '@deepseek-ai/dsh-llm':
+        specifier: workspace:*
+        version: link:../../llm/llm
+      '@deepseek-ai/dsh-sandbox':
+        specifier: workspace:*
+        version: link:../../sandbox/sandbox
+      '@deepseek-ai/dsh-sandbox-policy':
+        specifier: workspace:*
+        version: link:../../sandbox/sandbox-policy
+      '@deepseek-ai/dsh-scope':
+        specifier: workspace:*
+        version: link:../../core/scope
+      '@deepseek-ai/dsh-session-projection':
+        specifier: workspace:*
+        version: link:../../session/session-projection
+      '@deepseek-ai/dsh-settings':
+        specifier: workspace:*
+        version: link:../../settings/settings
+      '@deepseek-ai/dsh-tool-executor-native':
+        specifier: workspace:*
+        version: link:../../core/tool-executor-native
+      '@deepseek-ai/dsh-tool-fs':
+        specifier: workspace:*
+        version: link:../../fs/tool-fs
+      '@deepseek-ai/dsh-tools':
+        specifier: workspace:*
+        version: link:../../core/tools
+      '@deepseek-ai/dsh-typert-registry':
+        specifier: workspace:*
+        version: link:../../typert/registry
+      '@deepseek-ai/dsh-workspace':
+        specifier: workspace:*
+        version: link:../../workspace/workspace
+      '@types/ws':
+        specifier: ^8.18.1
+        version: 8.18.1
+      react:
+        specifier: ^18.2.0
+        version: 18.3.1
+      react-dom:
+        specifier: ^18.2.0
+        version: 18.3.1(react@18.3.1)
+
   packages/experimental/liveshare-protocol:
     dependencies:
       '@deepseek-ai/dsh-brand':
@@ -16517,6 +16917,9 @@ importers:
       '@deepseek-ai/dsh-client-ui-chat':
         specifier: workspace:*
         version: link:../../client/ui-chat
+      '@deepseek-ai/dsh-client-ui-context-menu':
+        specifier: workspace:*
+        version: link:../../client/ui-context-menu
       '@deepseek-ai/dsh-client-ui-conversation':
         specifier: workspace:*
         version: link:../../client/ui-conversation
diff --git a/scripts/build.spec.ts b/scripts/build.spec.ts
index cd99b2c525..1ac882468f 100644
--- a/scripts/build.spec.ts
+++ b/scripts/build.spec.ts
@@ -43,10 +43,10 @@ describe('repository build CLI', () => {
   })
 
   it('selects the complete build by default and one step set by scope', () => {
-    expect(parseBuildArguments([])).toEqual({ scope: 'complete', profile: undefined })
-    expect(parseBuildArguments(['--scope', 'artifacts', '--profile', 'official'])).toEqual({ scope: 'artifacts', profile: 'official' })
-    expect(parseBuildArguments(['--scope', 'check'])).toEqual({ scope: 'check', profile: undefined })
-    expect(parseBuildArguments(['--scope', 'typecheck'])).toEqual({ scope: 'typecheck', profile: undefined })
+    expect(parseBuildArguments([])).toEqual({ scope: 'complete', profile: undefined, serial: false })
+    expect(parseBuildArguments(['--scope', 'artifacts', '--profile', 'official'])).toEqual({ scope: 'artifacts', profile: 'official', serial: false })
+    expect(parseBuildArguments(['--scope', 'check'])).toEqual({ scope: 'check', profile: undefined, serial: false })
+    expect(parseBuildArguments(['--scope', 'typecheck'])).toEqual({ scope: 'typecheck', profile: undefined, serial: false })
   })
 
   it.each([
@@ -60,12 +60,27 @@ describe('repository build CLI', () => {
 })
 
 describe('repository build steps', () => {
-  it.each(['complete', 'check', 'typecheck'] as const)('gives Host compilers an 8 GiB heap in %s scope', (scope) => {
+  it('parses the explicit serial build option', () => {
+    expect(parseBuildArguments(['--profile', 'official', '--serial'])).toEqual({ scope: 'complete', profile: 'official', serial: true })
+  })
+
+  it.each(['complete', 'artifacts', 'check', 'typecheck'] as const)('chains every %s step when serial execution is selected', (scope) => {
+    const original = buildGates(root, scope)
+    const serial = buildGates(root, scope, {}, true)
+    expect(serial.map(gate => gate.id)).toEqual(original.map(gate => gate.id))
+    for (const [index, gate] of serial.entries()) {
+      const previous = serial[index - 1]
+      if (previous !== undefined) expect(gate.needs).toContain(previous.id)
+      for (const dependency of original[index]!.needs ?? []) expect(gate.needs).toContain(dependency)
+    }
+  })
+
+  it.each(['complete', 'check', 'typecheck'] as const)('gives Host compilers and both aggregate checks an 8 GiB heap in %s scope', (scope) => {
     const gates = buildGates(root, scope)
-    for (const gate of gates.filter(gate => gate.id === 'host-src' || gate.id === 'host-check')) {
+    for (const gate of gates.filter(gate => gate.id === 'host-src' || gate.id === 'host-check' || gate.id === 'client-check')) {
       expect(gate.args[0]).toBe('--max-old-space-size=8192')
     }
-    for (const gate of gates.filter(gate => gate.id === 'client-src' || gate.id === 'client-check')) {
+    for (const gate of gates.filter(gate => gate.id === 'client-src')) {
       expect(gate.args.some(arg => arg.startsWith('--max-old-space-size'))).toBe(false)
     }
   })
diff --git a/scripts/build.ts b/scripts/build.ts
index 6dcd73590b..d18d157e26 100644
--- a/scripts/build.ts
+++ b/scripts/build.ts
@@ -38,6 +38,8 @@ export interface BuildArguments {
   readonly scope: BuildScope
   /** Client build profile requested by `--profile`; `complete` and `artifacts` scopes only. */
   readonly profile: string | undefined
+  /** Run build steps without overlap, including when a concurrency override is set. */
+  readonly serial: boolean
 }
 
 /**
@@ -53,6 +55,7 @@ export function parseBuildArguments(args: readonly string[]): BuildArguments {
     options: {
       profile: { type: 'string' },
       scope: { type: 'string' },
+      serial: { type: 'boolean', default: false },
     },
     allowPositionals: false,
   })
@@ -63,7 +66,7 @@ export function parseBuildArguments(args: readonly string[]): BuildArguments {
   if ((scope === 'check' || scope === 'typecheck') && values.profile !== undefined) {
     throw new Error(`build: --profile selects artifact values and does not apply to --scope ${scope}`)
   }
-  return { scope, profile: values.profile }
+  return { scope, profile: values.profile, serial: values.serial }
 }
 
 /**
@@ -79,6 +82,7 @@ export function parseBuildArguments(args: readonly string[]): BuildArguments {
  * @param root - Repository root containing the compiler and bundle configurations.
  * @param scope - Steps to include.
  * @param environment - Environment overlay applied to every step; the parent value of a key mapped to `undefined` is removed.
+ * @param serial - Whether each step must wait for the preceding step in report order.
  * @returns The gate graph in report order.
  * @throws If an aggregate configuration is invalid.
  */
@@ -86,6 +90,7 @@ export function buildGates(
   root: string,
   scope: BuildScope,
   environment: Readonly<Record<string, string | undefined>> = {},
+  serial = false,
 ): Gate[] {
   const env = { ...environment }
   const gates: Gate[] = []
@@ -112,6 +117,12 @@ export function buildGates(
       })
     }
   }
+  if (serial) {
+    return gates.map((gate, index) => {
+      const previous = gates[index - 1]
+      return previous === undefined ? gate : { ...gate, needs: [...new Set([...(gate.needs ?? []), previous.id])] }
+    })
+  }
   return gates
 }
 
@@ -153,16 +164,16 @@ async function main(): Promise<number> {
   if (!process.features.typescript) {
     throw new Error('build: Node.js TypeScript type stripping is unavailable in this Node.js process; remove --no-experimental-strip-types from NODE_OPTIONS or use a Node.js build with TypeScript support')
   }
-  const { scope, profile } = parseBuildArguments(process.argv.slice(2))
+  const { scope, profile, serial } = parseBuildArguments(process.argv.slice(2))
   const root = resolve(import.meta.dirname, '..')
   const name = scope === 'complete' ? 'build' : scope === 'typecheck' ? 'typecheck' : `build:${scope}`
   const budget = defaultParallelism()
   const workers = (gates: readonly Gate[]) => ({
-    workers: Math.min(gates.length, budget),
-    source: describeDefaultParallelism(),
+    workers: serial ? 1 : Math.min(gates.length, budget),
+    source: serial ? '--serial' : describeDefaultParallelism(),
   })
   if (scope === 'check' || scope === 'typecheck') {
-    const gates = buildGates(root, scope)
+    const gates = buildGates(root, scope, {}, serial)
     return runAggregate(name, gates, workers(gates))
   }
 
@@ -170,7 +181,7 @@ async function main(): Promise<number> {
   const clientEnvironment = resolveClientBuildEnvironment(repositoryEnvironment, profile ?? process.env[CLIENT_BUILD_PROFILE_SELECTOR])
   const environment = environmentOverlay(process.env, clientBuildProcessEnvironment(process.env, clientEnvironment))
   rmSync(resolve(root, CLIENT_BUILD_RECORD_PATH), { force: true })
-  const gates = buildGates(root, scope, environment)
+  const gates = buildGates(root, scope, environment, serial)
   const exitCode = await runAggregate(name, gates, workers(gates))
   if (exitCode !== 0) return exitCode
   const record = writeClientBuildRecord(root, clientEnvironment)
diff --git a/scripts/check-workspace-constraints.ts b/scripts/check-workspace-constraints.ts
index 442d8783b3..c3bcaf5a1a 100644
--- a/scripts/check-workspace-constraints.ts
+++ b/scripts/check-workspace-constraints.ts
@@ -191,8 +191,18 @@ const packageFileExtras: Readonly<Record<string, readonly string[]>> = {
   '@deepseek-ai/dsh-experimental-subagent-oar': ['LICENSE-OAR'],
   // CUA publishes its client API and attributed native source for local macOS builds.
   '@deepseek-ai/dsh-cua': ['lib/remote-types.js', 'lib/api.js', 'lib/bridge.js', 'lib/native-client.js', 'lib/protocol.js'],
-  '@deepseek-ai/dsh-experimental-cua-macos': ['native/bin', 'native/Package.swift', 'native/Sources', 'native/tests/swift', 'native/tests/test_swift.py', 'native/LICENSE.cua-driver', 'native/upstream.json', 'native/README.md', 'native/README.zh.md', 'native/protocol.schema.json'],
+  '@deepseek-ai/dsh-experimental-cua-macos': ['native/bin', 'cua-helper.json', 'native/Package.swift', 'native/Info.plist', 'native/DSHComputerUse.icns', 'native/build_app.py', 'native/Sources', 'native/tests/swift', 'native/tests/test_swift.py', 'native/LICENSE.cua-driver', 'native/LICENSE.computer-use-icon', 'native/upstream.json', 'native/README.md', 'native/README.zh.md', 'native/protocol.schema.json'],
   '@deepseek-ai/dsh-webhook-github': ['examples/github-review/cordis.yml', 'examples/github-review/github-ready-review-rule.mjs'],
+  // Liveshare publishes its built Relay gateway entry and the shared runtime
+  // chunk that entry imports, plus the declaration-plane entry and its chunk.
+  // Its `./types` export is a type-only module, so the emitted tree contributes
+  // that one runtime file; the declarations still ship as the whole tree.
+  '@deepseek-ai/dsh-experimental-liveshare': [
+    'lib/owner-gateway/cli.js',
+    'lib/retry-backoff-*.js',
+    'lib/viewer-declarations.js',
+    'lib/viewer-declarations-*.js',
+  ],
   // Owned Worker bundles import this public bootstrap before their business entry.
   '@deepseek-ai/dsh-app-boot': ['lib/worker/profile-resolution-bootstrap.js'],
   // Statically linked client libraries keep their stylesheets next to the emitted
diff --git a/scripts/ci-workflow.spec.ts b/scripts/ci-workflow.spec.ts
index c3ac5f299b..79e39fe354 100644
--- a/scripts/ci-workflow.spec.ts
+++ b/scripts/ci-workflow.spec.ts
@@ -138,7 +138,7 @@ describe('CI workflow', () => {
       expect(job.steps).toContainEqual(expect.objectContaining({ run: command }))
     }
     for (const [file, command] of [
-      ['release-publish.yml', 'pnpm run build:official'],
+      ['release-publish.yml', 'pnpm run build:official --serial'],
       ['release-vendor-publish.yml', 'pnpm run build:lib:host'],
     ] as const) {
       expect(workflowJob(loadWorkflow('.github/workflows/' + file), 'pack').steps)
@@ -743,7 +743,7 @@ describe('CI workflow', () => {
     expect(uploadIndex).toBeGreaterThan(benchmarkIndex)
   })
 
-  it('splits the Wine Host TypeScript compile and retains its heap budget', () => {
+  it('splits both Wine TypeScript faces and retains their aggregate heap budgets', () => {
     const wineGates = readFileSync(resolve(root, 'scripts/wine-windows-gates.sh'), 'utf8')
 
     const references = wineGates.indexOf(
@@ -757,6 +757,43 @@ describe('CI workflow', () => {
     expect(references).toBeGreaterThan(metadata)
     expect(aggregate).toBeGreaterThan(references)
     expect(wineGates).not.toContain('-b tsconfig.host.json')
+    const clientReferences = wineGates.indexOf('wine_node "$scratch/logs/client-references.log" --import tsx/esm scripts/compile-referenced-projects.ts client')
+    const clientAggregate = wineGates.indexOf('wine_node "$scratch/logs/client-tsc.log" --max-old-space-size=8192 "$tsc_js" -p tsconfig.client.json --pretty false')
+    expect(clientReferences).toBeGreaterThan(aggregate)
+    expect(clientAggregate).toBeGreaterThan(clientReferences)
+    expect(wineGates).not.toContain('-b tsconfig.client.json')
+    expect(wineGates).toContain('  "$scratch/logs/client-references.log" \\')
+  })
+
+  it('runs only Wine for its manual suite and retains master-push scheduling', () => {
+    const master = loadWorkflow('.github/workflows/ci-master.yml')
+    if (!isRecord(master.on) || !isRecord(master.on.workflow_dispatch)
+      || !isRecord(master.on.workflow_dispatch.inputs) || !isRecord(master.on.workflow_dispatch.inputs.suite)
+      || !isRecord(master.jobs)) throw new TypeError('CI master must define manual suites and jobs')
+    expect(master.on.workflow_dispatch.inputs.suite.options).toEqual([
+      'larger-runner-benchmark', 'consolidated-runner-benchmark', 'ssh-helper', 'wine',
+    ])
+    const wine = workflowJob(master, 'windows')
+    if (typeof wine.if !== 'string') throw new TypeError('Wine must define a trigger condition')
+    for (const [event, ref, suite, expected] of [
+      ['push', 'refs/heads/master', '', true],
+      ['push', 'refs/heads/topic', '', false],
+      ['pull_request', 'refs/pull/42/merge', 'wine', false],
+      ['workflow_dispatch', 'refs/heads/topic', 'wine', true],
+      ['workflow_dispatch', 'refs/tags/dsh-v0.2.2-alpha.2', 'wine', true],
+      ['workflow_dispatch', 'refs/heads/topic', 'ssh-helper', false],
+      ['workflow_dispatch', 'refs/heads/topic', 'larger-runner-benchmark', false],
+      ['workflow_dispatch', 'refs/heads/topic', 'consolidated-runner-benchmark', false],
+    ] as const) {
+      expect(runInNewContext(wine.if, { github: { event_name: event, ref }, inputs: { suite } }, { timeout: 1000 })).toBe(expected)
+    }
+    const enabled = Object.entries(master.jobs).filter(([, job]) => {
+      if (!isRecord(job)) throw new TypeError('CI master jobs must be objects')
+      if (typeof job.if === 'boolean') return job.if
+      if (typeof job.if !== 'string') throw new TypeError('CI master jobs must define trigger conditions')
+      return runInNewContext(job.if, { github: { event_name: 'workflow_dispatch', ref: 'refs/heads/topic' }, inputs: { suite: 'wine' } }, { timeout: 1000 }) === true
+    }).map(([name]) => name)
+    expect(enabled).toEqual(['windows'])
   })
 
   it('cancels superseded master runs without changing the post-merge job inventory', () => {
diff --git a/scripts/client-bundle-purity.spec.ts b/scripts/client-bundle-purity.spec.ts
index d23402b3eb..dce3b5a9a4 100644
--- a/scripts/client-bundle-purity.spec.ts
+++ b/scripts/client-bundle-purity.spec.ts
@@ -234,12 +234,12 @@ describe('client bundle purity gate', () => {
     expect(() => resolveId('@deepseek-ai/dsh-spill-policy/notice/internal')).toThrow(/purity/)
   })
 
-  it('inlines the stateless file-drag entry without admitting its subpaths or UI plugin', () => {
-    expect(resolveId('@deepseek-ai/dsh-util-file-drag')).toBeNull()
-    expect(() => resolveId('@deepseek-ai/dsh-util-file-drag/internal')).toThrow(/purity/)
-    expect(() => resolveId('@deepseek-ai/dsh-client-ui-file-drag')).toThrow(/purity/)
+  it.each(['file-drag'])('inlines the stateless %s entry without admitting its subpaths or UI plugin', (name) => {
+    expect(resolveId(`@deepseek-ai/dsh-util-${name}`)).toBeNull()
+    expect(() => resolveId(`@deepseek-ai/dsh-util-${name}/internal`)).toThrow(/purity/)
+    expect(() => resolveId(`@deepseek-ai/dsh-client-ui-${name}`)).toThrow(/purity/)
     const deps = clientConfigs()[0]?.deps as { neverBundle: (specifier: string) => boolean }
-    expect(deps.neverBundle('@deepseek-ai/dsh-util-file-drag')).toBe(false)
+    expect(deps.neverBundle(`@deepseek-ai/dsh-util-${name}`)).toBe(false)
   })
 
   it('inlines the browser-safe Timer entry while sharing Cordis through the module table', () => {
diff --git a/scripts/compile-referenced-projects.ts b/scripts/compile-referenced-projects.ts
index c78af401c6..492e277a6a 100644
--- a/scripts/compile-referenced-projects.ts
+++ b/scripts/compile-referenced-projects.ts
@@ -94,7 +94,7 @@ export function referencedProjectsCompilerArgs(
  * @returns Arguments for `process.execPath`, run from the repository root.
  */
 export function aggregateCheckArgs(face: 'host' | 'client'): string[] {
-  return [...hostHeapArgs(face), fileURLToPath(import.meta.resolve('typescript/bin/tsc')), '-p', `tsconfig.${face}.json`]
+  return ['--max-old-space-size=8192', fileURLToPath(import.meta.resolve('typescript/bin/tsc')), '-p', `tsconfig.${face}.json`]
 }
 
 /**
@@ -105,7 +105,7 @@ export function aggregateCheckArgs(face: 'host' | 'client'): string[] {
  * @returns Arguments for `process.execPath`, run from the repository root.
  */
 export function aggregateBuildArgs(face: 'host' | 'client'): string[] {
-  return [...hostHeapArgs(face), fileURLToPath(import.meta.resolve('typescript/bin/tsc')), '-b', `tsconfig.${face}.json`]
+  return ['--max-old-space-size=8192', fileURLToPath(import.meta.resolve('typescript/bin/tsc')), '-b', `tsconfig.${face}.json`]
 }
 
 function hostHeapArgs(face: 'host' | 'client'): string[] {
diff --git a/scripts/cordis-config-access.spec.ts b/scripts/cordis-config-access.spec.ts
index e70d9992f7..02c5515aab 100644
--- a/scripts/cordis-config-access.spec.ts
+++ b/scripts/cordis-config-access.spec.ts
@@ -41,8 +41,8 @@ describe('Fiber configuration access', () => {
     const wrapper = ctx.plugin(apply, initial)
     await wrapper
     const fiber = wrapper.ctx.fiber
-    const hook = vi.fn(function (this: Fiber, _config: unknown, next: () => unknown) {
-      expect(this).toBe(fiber)
+    const hook = vi.fn((target: Fiber, next: () => unknown) => {
+      expect(target).toBe(fiber)
       return next()
     })
     fiber.ctx.on('internal/config', hook)
@@ -66,7 +66,7 @@ describe('Fiber configuration access', () => {
     const wrapper = ctx.plugin(apply, initial)
     await wrapper
     const raw = { value: 2 }
-    wrapper.update(raw)
+    await wrapper.update(raw)
     await wrapper.await()
     expect(apply).toHaveBeenLastCalledWith(wrapper.ctx, raw)
     expect(wrapper.rawConfig).toBe(raw)
@@ -78,14 +78,13 @@ describe('Fiber configuration access', () => {
 
   it('retains a pending raw update until its injection is available', async () => {
     const ctx = root()
-    ctx.provide('configAccessTest')
     const apply = vi.fn()
     const wrapper = ctx.plugin({ inject: ['configAccessTest'], apply }, { value: 1 })
     const raw = { value: 2 }
-    wrapper.update(raw)
+    await wrapper.ctx.fiber.update(raw)
     expect(wrapper.rawConfig).toBe(raw)
     expect(wrapper.effectiveConfig).toBeUndefined()
-    ctx.set('configAccessTest', {})
+    ctx.provide('configAccessTest', {})
     await wrapper
     expect(wrapper.effectiveConfig).toBe(raw)
     expect(apply).toHaveBeenCalledOnce()
diff --git a/scripts/cordis-core-lifecycle.spec.ts b/scripts/cordis-core-lifecycle.spec.ts
new file mode 100644
index 0000000000..20f456db81
--- /dev/null
+++ b/scripts/cordis-core-lifecycle.spec.ts
@@ -0,0 +1,188 @@
+/** Cordis rc.11 updates retain dependency ownership and publish only current configuration. */
+import type { Awaitable } from '@deepseek-ai/cosmokit'
+import { Context, FiberState } from '@deepseek-ai/cordis'
+import { describe, expect, it, onTestFinished, vi } from 'vitest'
+
+declare module '@deepseek-ai/cordis' {
+  interface Context {
+    rc11Service: { alive: boolean }
+    rc11View: string
+    rc11Private: boolean
+  }
+}
+
+function root() {
+  const ctx = new Context()
+  onTestFinished(() => ctx.fiber.dispose())
+  return ctx
+}
+
+function barrier() {
+  const gate = Promise.withResolvers<undefined>()
+  onTestFinished(() => { gate.resolve(undefined) })
+  return gate
+}
+
+describe('Cordis rc.11 lifecycle', () => {
+  it.each([false, true])('awaits the latest update while loading (inject: %s)', async (inject) => {
+    const ctx = root()
+    ctx.provide('rc11Dependency', 1)
+    const started = barrier()
+    const release = barrier()
+    const applied: number[] = []
+    const disposed: number[] = []
+    const fiber = await ctx.plugin({ inject: inject ? ['rc11Dependency'] : [], async apply(owner: Context, config: { value: number }) {
+      applied.push(config.value)
+      if (config.value === 1) { started.resolve(undefined); await release.promise }
+      owner.effect(() => () => { disposed.push(config.value) })
+    } }, { value: 0 })
+    const first = fiber.update({ value: 1 })
+    await started.promise
+    const second = fiber.update({ value: 2 })
+    const third = fiber.update({ value: 3 })
+    release.resolve(undefined)
+    await Promise.all([first, second, third])
+    expect(applied).toEqual([0, 1, 3])
+    expect(disposed).toEqual([0, 1])
+    expect(fiber.state).toBe(FiberState.ACTIVE)
+    expect(fiber.effectiveConfig).toEqual({ value: 3 })
+    await fiber.dispose()
+    expect(disposed).toEqual([0, 1, 3])
+  })
+
+  it('cleans up a superseded activation failure and accepts the latest update', async () => {
+    const ctx = root()
+    const started = barrier()
+    const release = barrier()
+    const cleanup = vi.fn()
+    const fiber = ctx.plugin(async (owner, config: number) => {
+      owner.effect(() => cleanup)
+      if (config !== 1) return
+      started.resolve(undefined)
+      await release.promise
+      throw new Error('superseded activation')
+    }, 1)
+    await started.promise
+    const updating = fiber.update(2)
+    release.resolve(undefined)
+    await updating
+    expect(cleanup).toHaveBeenCalledOnce()
+    expect(fiber.state).toBe(FiberState.ACTIVE)
+    expect(fiber.effectiveConfig).toBe(2)
+  })
+
+  it.each(['dispose', 'restart'] as const)('retains isolated providers through dependent teardown on %s', async (action) => {
+    const ctx = root()
+    const realm = ctx.isolate('rc11Service')
+    const disposing = barrier()
+    const release = barrier()
+    const events: string[] = []
+    const provider = await ctx.plugin((owner) => {
+      const service = { alive: true }
+      owner.isolate('rc11Service', realm[Context.isolate].rc11Service).provide('rc11Service', service)
+      owner.effect(() => () => { events.push('provider'); service.alive = false })
+    })
+    const consumer = await realm.inject(['rc11Service'], (owner) => {
+      return async () => {
+        disposing.resolve(undefined)
+        await release.promise
+        expect(owner.rc11Service.alive).toBe(true)
+        events.push('consumer')
+      }
+    })
+    const task = provider[action]()
+    await disposing.promise
+    expect(events).toEqual([])
+    release.resolve(undefined)
+    await task
+    await consumer.await()
+    expect(events).toEqual(['consumer', 'provider'])
+  })
+
+  it('separates own isolated provisions from the committed injection', async () => {
+    const ctx = root()
+    ctx.provide('rc11View', 'outer')
+    await ctx.inject(['rc11View'], async (owner) => {
+      const isolated = owner.isolate('rc11View')
+      const withdraw = isolated.reflect.provide('rc11View', 'inner')
+      expect(owner.rc11View).toBe('outer')
+      expect(isolated.rc11View).toBe('inner')
+      await isolated.plugin((child) => { expect(child.rc11View).toBe('inner') })
+      await withdraw()
+      expect(owner.rc11View).toBe('outer')
+      expect(isolated.rc11View).toBe('outer')
+    })
+    await ctx.plugin((owner) => {
+      owner.isolate('rc11Private').provide('rc11Private', true)
+      expect(() => owner.rc11Private).toThrow('without inject')
+    })
+  })
+
+  it('publishes successful retained-instance updates and ignores stale or rejected completions', async () => {
+    const ctx = root()
+    const old = barrier()
+    const failed = Promise.withResolvers<undefined>()
+    const values: unknown[] = []
+    const fiber = await ctx.plugin((owner, config: number) => {
+      values.push(config)
+      owner.on('internal/update', (config: number) => {
+        if (config === 1) return old.promise
+        if (config === 3) return failed.promise
+      })
+    }, 0)
+    const first = fiber.update(1)
+    expect(fiber.effectiveConfig).toBe(0)
+    await fiber.update(2)
+    old.resolve(undefined)
+    await first
+    expect(fiber.effectiveConfig).toBe(2)
+    const third = fiber.update(3)
+    const rejected = expect(third).rejects.toThrow('update rejected')
+    failed.reject(new Error('update rejected'))
+    await rejected
+    expect(fiber.rawConfig).toBe(3)
+    expect(fiber.effectiveConfig).toBe(2)
+    expect(values).toEqual([0])
+  })
+
+  it.each(['raw retention', 'restart', 'dispose'] as const)('does not publish an old update after %s', async (action) => {
+    const ctx = root()
+    const release = barrier()
+    const configs: object[] = []
+    const fiber = await ctx.plugin((owner, config: object) => {
+      configs.push(config)
+      owner.on('internal/update', () => release.promise)
+    }, { value: 0 })
+    const old = fiber.update({ value: 1 })
+    if (action === 'raw retention') fiber.rawConfig = { value: 2 }
+    if (action === 'restart') await fiber.restart()
+    if (action === 'dispose') await fiber.dispose()
+    release.resolve(undefined)
+    await old
+    expect(fiber.effectiveConfig).toBe(configs.at(-1))
+  })
+
+  it('keeps the restarted config identity when a listener delegates', async () => {
+    const ctx = root()
+    const applied: unknown[] = []
+    const fiber = await ctx.plugin((owner, config) => {
+      applied.push(config)
+      owner.on('internal/update', (_config, next): Awaitable<void> => next())
+    }, {})
+    fiber.ctx.on('internal/config', (_fiber, next: () => object) => ({ ...next() }))
+    await fiber.update({ value: 1 })
+    expect(fiber.effectiveConfig).toBe(applied.at(-1))
+  })
+
+  it('supports symbol events and rejects repeated waterfall delegation', async () => {
+    const ctx = root()
+    const name = Symbol('rc11-event')
+    const callback = vi.fn()
+    ctx.on(name, callback)
+    ctx.emit(name, 1)
+    expect(callback).toHaveBeenCalledWith(1)
+    const waterfall = Symbol('rc11-waterfall')
+    ctx.on(waterfall, (next: () => number) => { next(); return next() })
+    expect(() => { ctx.waterfall(waterfall, () => 1) }).toThrow('next() called multiple times')
+  })
+})
diff --git a/scripts/cua-helper/package.ts b/scripts/cua-helper/package.ts
new file mode 100644
index 0000000000..408503691c
--- /dev/null
+++ b/scripts/cua-helper/package.ts
@@ -0,0 +1,85 @@
+/** Build company-signed, notarized CUA applications using the existing macOS packaging credentials. */
+import { execFileSync } from 'node:child_process'
+import { mkdirSync, mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join, resolve } from 'node:path'
+import { parseArgs } from 'node:util'
+import { execa } from 'execa'
+import { create, extract } from 'tar'
+import { loadDesktopPackageEnvironment } from '../../apps/desktop/scripts/desktop-package-environment.mjs'
+import { resolveMacOSNotarizationEnvironment, resolveMacOSSigningEnvironment } from '../../apps/desktop/scripts/desktop-release-environment.mjs'
+import { withMacOSSigningKeychain } from '../../apps/desktop/scripts/macos-signing-keychain.mjs'
+import { withMacOSNotarizationProxy } from '../../apps/desktop/scripts/macos-notarization-proxy.ts'
+import { resolveMacOSPackageSettings } from '../../apps/desktop/scripts/macos-package-settings.mjs'
+import { notarizeMacOS } from '../../apps/desktop/scripts/notarize-macos.mjs'
+import { verifyMacOSRuntimeCode } from '../../apps/desktop/scripts/verify-macos-signature.mjs'
+import { CUA_APPLICATION, CUA_ARCHITECTURES, CUA_MANIFEST, readCuaApplication, sealCuaApplication, verifyCuaHelperPayload, type CuaHelperManifest } from './payload.ts'
+
+async function main(): Promise<void> {
+  const { values } = parseArgs({ options: { out: { type: 'string' } }, allowPositionals: false })
+  if (process.platform !== 'darwin' || !values.out) throw new Error('Usage on macOS: package.ts --out <new-output-directory>')
+  const root = resolve(import.meta.dirname, '../..')
+  const output = resolve(values.out)
+  const environment = loadDesktopPackageEnvironment('darwin')
+  const signing = resolveMacOSSigningEnvironment(environment)
+  const notary = resolveMacOSNotarizationEnvironment(environment)
+  const settings = resolveMacOSPackageSettings(environment)
+  const { version } = JSON.parse(readFileSync(join(root, 'package.json'), 'utf8')) as { version: string }
+  const commit = execFileSync('git', ['rev-parse', 'HEAD'], { cwd: root, encoding: 'utf8' }).trim()
+  mkdirSync(output, { recursive: false })
+  const scratch = mkdtempSync(join(tmpdir(), 'dsh-cua-package-'))
+  const controller = new AbortController()
+  const stop = (): void => { controller.abort() }
+  process.once('SIGINT', stop)
+  process.once('SIGTERM', stop)
+  const run = async (command: string, args: string[], env = environment): Promise<void> => {
+    await execa(command, args, { cwd: root, env, extendEnv: false, stdio: 'inherit', cancelSignal: controller.signal, killDescendants: true })
+  }
+  const verify = async (application: string, architecture: 'arm64' | 'x64'): Promise<void> => {
+    verifyMacOSRuntimeCode(application, signing)
+    await run('/usr/bin/lipo', ['-verify_arch', architecture === 'x64' ? 'x86_64' : 'arm64', join(application, 'Contents/MacOS/dsh-cua-native')])
+    await run('/usr/bin/xcrun', ['stapler', 'validate', application])
+    await run('/usr/sbin/spctl', ['--assess', '--type', 'execute', '--verbose=4', application])
+  }
+  try {
+    const payload = join(scratch, 'payload')
+    const applications: CuaHelperManifest['applications'] = []
+    await withMacOSSigningKeychain(environment, async (signingEnvironment) => {
+      for (const architecture of CUA_ARCHITECTURES) {
+        controller.signal.throwIfAborted()
+        const directory = join(payload, 'native/bin', `darwin-${architecture}`)
+        await run('/usr/bin/xcrun', ['python3', join(root, 'packages/experimental/cua-macos/native/build_app.py'),
+          '--arch', architecture === 'x64' ? 'x86_64' : 'arm64', '--scratch-path', join(scratch, `swift-${architecture}`),
+          '--output-directory', directory, '--identity', `Developer ID Application: ${signing.signingIdentity}`], signingEnvironment)
+        const { application } = readCuaApplication(directory)
+        await withMacOSNotarizationProxy(settings.notarizationProxy, () => notarizeMacOS({ appPath: application, ...notary }))
+        await verify(application, architecture)
+        applications.push({ architecture, bundle: sealCuaApplication(directory, application) })
+      }
+    })
+    const manifest: CuaHelperManifest = { schemaVersion: 1, version, commit, teamId: signing.teamId, applications }
+    writeFileSync(join(payload, CUA_MANIFEST), `${JSON.stringify(manifest, null, 2)}\n`)
+    verifyCuaHelperPayload(payload, { version, commit })
+    const archive = join(output, 'cua-helper.tgz')
+    await create({ cwd: payload, file: archive, gzip: true, portable: true }, [CUA_MANIFEST, 'native'])
+    const extracted = join(scratch, 'extracted')
+    mkdirSync(extracted)
+    await extract({ cwd: extracted, file: archive, strict: true })
+    verifyCuaHelperPayload(extracted, { version, commit })
+    for (const { architecture, bundle } of applications) {
+      const application = join(extracted, 'native/bin', `darwin-${architecture}`, bundle, CUA_APPLICATION)
+      await verify(application, architecture)
+    }
+    writeFileSync(join(output, CUA_MANIFEST), `${JSON.stringify(manifest, null, 2)}\n`)
+    console.log(`CUA helper artifact: ${archive}`)
+  } catch (error) {
+    rmSync(join(output, 'cua-helper.tgz'), { force: true })
+    throw error
+  } finally {
+    process.off('SIGINT', stop)
+    process.off('SIGTERM', stop)
+    rmSync(scratch, { recursive: true, force: true })
+  }
+}
+
+await main()
diff --git a/scripts/cua-helper/payload.spec.ts b/scripts/cua-helper/payload.spec.ts
new file mode 100644
index 0000000000..a875f49edd
--- /dev/null
+++ b/scripts/cua-helper/payload.spec.ts
@@ -0,0 +1,130 @@
+/** Final application bytes and source identity survive packaging; invalid inputs never reach publication. */
+import { execFileSync } from 'node:child_process'
+import { chmodSync, cpSync, mkdirSync, mkdtempSync, readFileSync, readdirSync, rmSync, statSync, symlinkSync, utimesSync, writeFileSync } from 'node:fs'
+import { createRequire } from 'node:module'
+import { tmpdir } from 'node:os'
+import { dirname, join, resolve } from 'node:path'
+import { execa } from 'execa'
+import { create } from 'tar'
+import { expect, it, onTestFinished } from 'vitest'
+import { CUA_APPLICATION, CUA_ARCHITECTURES, CUA_MANIFEST, cuaApplicationDigest, readCuaApplication, sealCuaApplication, stageCuaHelperPayload, verifyCuaHelperPayload } from './payload.ts'
+import { verifyCuaHelperTarball } from './verify-tarball.ts'
+
+const identity = { version: '1.0.0', commit: 'a'.repeat(40) }
+function fixture() {
+  const root = mkdtempSync(join(tmpdir(), 'cua-payload-test-'))
+  onTestFinished(() => { rmSync(root, { recursive: true, force: true }) })
+  const payload = join(root, 'payload')
+  const applications = CUA_ARCHITECTURES.map((architecture) => {
+    const directory = join(payload, 'native/bin', `darwin-${architecture}`)
+    const application = join(directory, 'unsigned', CUA_APPLICATION)
+    for (const [path, bytes] of Object.entries({
+      'Contents/Info.plist': 'fixture identity', 'Contents/MacOS/dsh-cua-native': `executable ${architecture}`,
+      'Contents/Resources/DSHComputerUse.icns': 'icon', 'Contents/_CodeSignature/CodeResources': 'signature',
+    })) {
+      mkdirSync(join(application, path, '..'), { recursive: true })
+      writeFileSync(join(application, path), bytes)
+    }
+    chmodSync(join(application, 'Contents/MacOS/dsh-cua-native'), 0o755)
+    return { architecture, bundle: sealCuaApplication(directory, application) }
+  })
+  const manifest = { schemaVersion: 1, ...identity, teamId: 'ABCDEFGHIJ', applications }
+  writeFileSync(join(payload, CUA_MANIFEST), JSON.stringify(manifest))
+  return { root, payload, manifest, directory: join(payload, 'native/bin/darwin-arm64') }
+}
+
+it.skipIf(process.platform === 'win32')('matches the native build receipt hash and includes post-signing ticket bytes', () => {
+  const f = fixture()
+  const before = readCuaApplication(f.directory)
+  const script = resolve('packages/experimental/cua-macos/native/build_app.py')
+  const digest = execFileSync('python3', ['-c', 'import runpy,sys; from pathlib import Path; print(runpy.run_path(sys.argv[1])["bundle_digest"](Path(sys.argv[2])))', script, before.application], { encoding: 'utf8' }).trim()
+  expect(cuaApplicationDigest(before.application)).toBe(digest)
+  writeFileSync(join(before.application, 'Contents/ticket'), 'notarization ticket')
+  expect(() => readCuaApplication(f.directory)).toThrow('digest')
+  const after = sealCuaApplication(f.directory, before.application)
+  expect(after).not.toBe(before.bundle)
+  expect(readFileSync(join(readCuaApplication(f.directory).application, 'Contents/ticket'), 'utf8')).toBe('notarization ticket')
+})
+
+it.skipIf(process.platform === 'win32')('verifies staged and repacked provider bytes before publication', async () => {
+  const f = fixture()
+  expect(verifyCuaHelperPayload(f.payload, identity)).toEqual(f.manifest)
+  const packageRoot = join(f.root, 'package')
+  stageCuaHelperPayload(f.payload, packageRoot, identity)
+  expect(() => { stageCuaHelperPayload(f.payload, packageRoot, identity) }).toThrow('empty native/bin')
+  const tarball = join(f.root, 'provider.tgz')
+  await create({ file: tarball, cwd: f.root, gzip: true, portable: true }, ['package'])
+  await verifyCuaHelperTarball(tarball, identity)
+  const application = readCuaApplication(join(packageRoot, 'native/bin/darwin-arm64')).application
+  writeFileSync(join(application, 'Contents/MacOS/dsh-cua-native'), 'changed after signing')
+  await create({ file: tarball, cwd: f.root, gzip: true, portable: true }, ['package'])
+  await expect(verifyCuaHelperTarball(tarball, identity)).rejects.toThrow('digest')
+})
+
+it.skipIf(process.platform === 'win32')('keeps npm tarball bytes when reusing a helper and changes them after re-signing', async ({ signal }) => {
+  const f = fixture()
+  const require = createRequire(import.meta.url)
+  const pnpm = join(dirname(require.resolve('pnpm')), 'bin/pnpm.cjs')
+  const pack = async (label: string, mtime: Date): Promise<Buffer> => {
+    const packageRoot = join(f.root, label, 'provider')
+    const output = join(f.root, label, 'packed')
+    mkdirSync(join(packageRoot, 'lib'), { recursive: true })
+    mkdirSync(output)
+    stageCuaHelperPayload(f.payload, packageRoot, identity)
+    writeFileSync(join(packageRoot, 'package.json'), JSON.stringify({
+      name: '@deepseek-ai/dsh-experimental-cua-macos', version: identity.version, type: 'module',
+      files: ['lib/index.js', 'native/bin', CUA_MANIFEST],
+    }))
+    writeFileSync(join(packageRoot, 'lib/index.js'), 'export const provider = "fixture";\n')
+    for (const entry of readdirSync(packageRoot, { recursive: true, withFileTypes: true })) {
+      if (entry.isFile()) utimesSync(join(entry.parentPath, entry.name), mtime, mtime)
+    }
+    const result = await execa(process.execPath, [pnpm, '--dir', packageRoot, 'pack', '--pack-destination', output], {
+      cwd: packageRoot, env: { CI: 'true' }, cancelSignal: signal, killDescendants: true, reject: false,
+    })
+    expect(result.isCanceled).toBe(false)
+    expect(result.signal).toBeUndefined()
+    expect(result.exitCode, result.stderr).toBe(0)
+    const tarball = join(output, 'deepseek-ai-dsh-experimental-cua-macos-1.0.0.tgz')
+    await verifyCuaHelperTarball(tarball, identity)
+    return readFileSync(tarball)
+  }
+  const first = await pack('first', new Date('2001-01-01T00:00:00Z'))
+  const reused = await pack('reused', new Date('2026-01-01T00:00:00Z'))
+  expect(statSync(join(f.root, 'first/provider/cua-helper.json')).mtimeMs)
+    .not.toBe(statSync(join(f.root, 'reused/provider/cua-helper.json')).mtimeMs)
+  expect(reused.equals(first)).toBe(true)
+
+  const application = readCuaApplication(f.directory).application
+  writeFileSync(join(application, 'Contents/_CodeSignature/CodeResources'), 'another signing timestamp')
+  f.manifest.applications[0]!.bundle = sealCuaApplication(f.directory, application)
+  writeFileSync(join(f.payload, CUA_MANIFEST), JSON.stringify(f.manifest))
+  const rebuilt = await pack('rebuilt', new Date('2026-01-01T00:00:00Z'))
+  expect(rebuilt.equals(first)).toBe(false)
+})
+
+it.skipIf(process.platform === 'win32').each(['version', 'commit', 'architecture', 'missing', 'extra', 'permissions', 'symlink'] as const)('rejects %s damage before staging', (damage) => {
+  const f = fixture()
+  const before = readCuaApplication(f.directory)
+  if (damage === 'version') f.manifest.version = '2.0.0'
+  if (damage === 'commit') f.manifest.commit = 'b'.repeat(40)
+  if (damage === 'architecture') f.manifest.applications[1] = f.manifest.applications[0]!
+  if (damage === 'missing') rmSync(join(before.application, 'Contents/Info.plist'))
+  if (damage === 'extra') cpSync(before.application, join(f.directory, 'old-generation', CUA_APPLICATION), { recursive: true })
+  if (damage === 'permissions') chmodSync(join(before.application, 'Contents/MacOS/dsh-cua-native'), 0o644)
+  if (damage === 'symlink') symlinkSync(join(f.root, 'outside'), join(before.application, 'outside'))
+  writeFileSync(join(f.payload, CUA_MANIFEST), JSON.stringify(f.manifest))
+  expect(() => { stageCuaHelperPayload(f.payload, join(f.root, 'consumer'), identity) }).toThrow()
+})
+
+it('keeps company signing outside pull-request release rehearsals', () => {
+  const workflow = readFileSync(resolve('.github/workflows/cua-helper-package.yml'), 'utf8')
+  expect(workflow).toContain('workflow_dispatch:')
+  expect(workflow).toContain('workflow_call:')
+  expect(workflow).not.toContain('pull_request:')
+  expect(workflow).toContain('dsh-mac-package-trial')
+  const release = readFileSync(resolve('.github/workflows/release-publish.yml'), 'utf8')
+  expect(release).toContain('needs: cua-helper')
+  expect(release).toContain('scripts/cua-helper/stage.ts')
+  expect(readFileSync(resolve('.github/workflows/release.yml'), 'utf8')).not.toContain('cua-helper-package.yml')
+})
diff --git a/scripts/cua-helper/payload.ts b/scripts/cua-helper/payload.ts
new file mode 100644
index 0000000000..4199115837
--- /dev/null
+++ b/scripts/cua-helper/payload.ts
@@ -0,0 +1,121 @@
+/** Integrity and source binding for notarized Computer Use applications consumed by npm packaging. */
+import { createHash } from 'node:crypto'
+import { cpSync, existsSync, lstatSync, mkdirSync, readFileSync, readdirSync, renameSync, rmSync, writeFileSync } from 'node:fs'
+import { join } from 'node:path'
+import { z } from 'zod'
+
+/** Architectures carried by each published macOS provider package. */
+export const CUA_ARCHITECTURES = ['arm64', 'x64'] as const
+/** Native application name shared with the provider receipt. */
+export const CUA_APPLICATION = 'DSH Computer Use.app'
+/** Completion record written only after both applications pass distribution checks. */
+export const CUA_MANIFEST = 'cua-helper.json'
+const Digest = z.string().regex(/^[a-f0-9]{64}$/u)
+const Manifest = z.object({
+  schemaVersion: z.literal(1), version: z.string().min(1), commit: z.string().regex(/^[a-f0-9]{40}$/u),
+  teamId: z.string().regex(/^[A-Z0-9]{10}$/u),
+  applications: z.array(z.object({ architecture: z.enum(CUA_ARCHITECTURES), bundle: Digest }).strict()).length(2),
+}).strict()
+/** Verified build identity and application generations. */
+export type CuaHelperManifest = z.infer<typeof Manifest>
+
+/**
+ * Hash application-relative file names, bytes and executable bits, matching build_app.py.
+ * @param application - Real application directory; links and special files are rejected.
+ * @returns SHA-256 of the complete application, including its notarization ticket.
+ */
+export function cuaApplicationDigest(application: string): string {
+  const root = lstatSync(application)
+  if (!root.isDirectory() || root.isSymbolicLink()) throw new Error('CUA application must be a real directory')
+  const files: string[] = []
+  const visit = (directory: string): void => {
+    for (const name of readdirSync(join(application, directory))) {
+      const path = directory ? `${directory}/${name}` : name
+      const stat = lstatSync(join(application, path))
+      if (stat.isDirectory()) visit(path)
+      else if (stat.isFile()) files.push(path)
+      else throw new Error(`CUA application contains a link or special file: ${path}`)
+    }
+  }
+  visit('')
+  const digest = createHash('sha256')
+  for (const path of files.sort()) {
+    const file = join(application, path)
+    digest.update(`${path}\0`).update(createHash('sha256').update(readFileSync(file)).digest())
+      .update(Buffer.from([(lstatSync(file).mode & 0o111) === 0 ? 0 : 1]))
+  }
+  return digest.digest('hex')
+}
+
+/**
+ * Select the complete signed application and validate its immutable receipt.
+ * @param directory - One architecture's native/bin directory.
+ * @returns Selected application path and its content digest.
+ */
+export function readCuaApplication(directory: string): { application: string; bundle: string } {
+  if (!lstatSync(directory).isDirectory() || !lstatSync(join(directory, 'current.json')).isFile()) throw new Error('CUA receipt requires regular files and directories')
+  const { bundle } = z.object({ bundle: Digest }).strict().parse(JSON.parse(readFileSync(join(directory, 'current.json'), 'utf8')))
+  if (!lstatSync(join(directory, bundle)).isDirectory()) throw new Error('CUA generation must be a real directory')
+  const application = join(directory, bundle, CUA_APPLICATION)
+  for (const path of ['Contents/Info.plist', 'Contents/MacOS/dsh-cua-native', 'Contents/Resources/DSHComputerUse.icns', 'Contents/_CodeSignature/CodeResources']) {
+    if (!lstatSync(join(application, path)).isFile()) throw new Error(`CUA application omits ${path}`)
+  }
+  if ((lstatSync(join(application, 'Contents/MacOS/dsh-cua-native')).mode & 0o111) === 0) throw new Error('CUA helper is not executable')
+  if (cuaApplicationDigest(application) !== bundle) throw new Error('CUA application digest does not match current.json')
+  if (readdirSync(directory).sort().join(',') !== [bundle, 'current.json'].sort().join(',')) throw new Error('CUA release contains unselected application generations')
+  return { application, bundle }
+}
+
+/**
+ * Reselect a build after notarization has added its ticket, before distribution.
+ * @param directory - Fresh, build-owned architecture directory.
+ * @param application - Application just notarized and verified by the producer.
+ * @returns Final content digest; old build receipts are replaced.
+ */
+export function sealCuaApplication(directory: string, application: string): string {
+  const bundle = cuaApplicationDigest(application)
+  const destination = join(directory, bundle, CUA_APPLICATION)
+  if (destination !== application) {
+    mkdirSync(join(directory, bundle))
+    renameSync(application, destination)
+    for (const name of readdirSync(directory)) {
+      if (name !== bundle && name !== 'current.json') rmSync(join(directory, name), { recursive: true, force: true })
+    }
+  }
+  writeFileSync(join(directory, 'current.json'), `${JSON.stringify({ bundle })}\n`)
+  readCuaApplication(directory)
+  return bundle
+}
+
+/**
+ * Verify the producer record and every final application before copying or packing.
+ * @param root - Extracted helper artifact containing native/bin and cua-helper.json.
+ * @param expected - Source commit and product version of the consuming checkout.
+ * @returns Validated producer metadata.
+ */
+export function verifyCuaHelperPayload(root: string, expected: { version: string; commit: string }): CuaHelperManifest {
+  const manifest = Manifest.parse(JSON.parse(readFileSync(join(root, CUA_MANIFEST), 'utf8')))
+  if (manifest.version !== expected.version || manifest.commit !== expected.commit) throw new Error('CUA artifact does not match the release source and version')
+  if (new Set(manifest.applications.map(entry => entry.architecture)).size !== 2) throw new Error('CUA artifact must contain arm64 and x64')
+  const bin = join(root, 'native/bin')
+  if (readdirSync(bin).sort().join(',') !== 'darwin-arm64,darwin-x64') throw new Error('CUA artifact has unexpected architecture directories')
+  for (const entry of manifest.applications) {
+    const { bundle } = readCuaApplication(join(bin, `darwin-${entry.architecture}`))
+    if (bundle !== entry.bundle) throw new Error('CUA application differs from the producer manifest')
+  }
+  return manifest
+}
+
+/**
+ * Stage verified native applications for the provider's ordinary pnpm pack command.
+ * @param root - Extracted helper artifact.
+ * @param packageRoot - Provider package to receive native/bin.
+ * @param expected - Source identity required by the release.
+ */
+export function stageCuaHelperPayload(root: string, packageRoot: string, expected: { version: string; commit: string }): void {
+  verifyCuaHelperPayload(root, expected)
+  const destination = join(packageRoot, 'native/bin')
+  if (existsSync(destination)) throw new Error('CUA staging requires an empty native/bin; use a clean release checkout')
+  cpSync(join(root, 'native/bin'), destination, { recursive: true })
+  cpSync(join(root, CUA_MANIFEST), join(packageRoot, CUA_MANIFEST))
+}
diff --git a/scripts/cua-helper/select-artifact.spec.ts b/scripts/cua-helper/select-artifact.spec.ts
new file mode 100644
index 0000000000..2d4582457b
--- /dev/null
+++ b/scripts/cua-helper/select-artifact.spec.ts
@@ -0,0 +1,94 @@
+/** Retained CUA selection stays within one producer, attempt and immutable artifact. */
+import { expect, it, vi } from 'vitest'
+import { selectCuaHelperArtifact } from './select-artifact.ts'
+
+const repository = 'deepseek-harness/deepseek-harness'
+const base = `repos/${repository}/actions/runs/123`
+
+function fixture() {
+  const run = { id: 123, run_attempt: 2, status: 'completed', conclusion: 'success', event: 'workflow_dispatch',
+    path: '.github/workflows/cua-helper-package.yml', repository: { full_name: repository } }
+  const jobs = [{ jobs: [{ name: 'package', conclusion: 'success' }] }]
+  const artifact = { id: 456, name: 'cua-helper-123-2', expired: false, size_in_bytes: 4096 }
+  const artifacts = [{ artifacts: [{ ...artifact, id: 455, name: 'cua-helper-123-1' }] }, { artifacts: [artifact] }]
+  const api = vi.fn((path: string, paginate?: boolean) => {
+    if (path === base) { expect(paginate).toBeUndefined(); return { run_attempt: 2 } }
+    if (path === `${base}/attempts/2`) { expect(paginate).toBeUndefined(); return run }
+    expect(paginate).toBe(true)
+    if (path === `${base}/attempts/2/jobs?per_page=100`) return jobs
+    if (path === `${base}/artifacts?per_page=100`) return artifacts
+    throw new Error(`Unexpected GitHub request ${path}`)
+  })
+  return { run, jobs, artifact, artifacts, api }
+}
+
+it.each([undefined, '', '2'])('pins attempt %s and finds its artifact across pages', (attempt) => {
+  const f = fixture()
+  expect(selectCuaHelperArtifact(repository, { cua_run_id: '123', cua_run_attempt: attempt }, f.api))
+    .toEqual({ runId: '123', attempt: '2', artifactId: '456' })
+  expect(f.api.mock.calls.some(([path]) => path === base)).toBe(attempt !== '2')
+})
+
+it('allows successful CUA packaging when later publication jobs failed', () => {
+  const f = fixture()
+  f.run.path = '.github/workflows/release-publish.yml'
+  f.run.conclusion = 'failure'
+  f.jobs[0]!.jobs = [{ name: 'cua-helper / package', conclusion: 'success' }, { name: 'Publish to npm', conclusion: 'failure' }]
+  expect(selectCuaHelperArtifact(repository, { cua_run_id: '123' }, f.api).artifactId).toBe('456')
+})
+
+it.each([
+  {}, { cua_run_attempt: '2' }, { cua_run_id: '' }, { cua_run_id: '123/other' }, { cua_run_id: ' 123' },
+  { cua_run_id: '0' }, { cua_run_id: '123', cua_run_attempt: '-1' }, { cua_run_id: '123', cua_run_attempt: '2\nartifact-id=9' },
+])('rejects invalid selection fields before reading GitHub: %j', (inputs) => {
+  const f = fixture()
+  expect(() => selectCuaHelperArtifact(repository, inputs, f.api)).toThrow()
+  expect(f.api).not.toHaveBeenCalled()
+})
+
+it.each(['wrong/repo/extra', '../repo', 'owner/..', 'owner/.'])('rejects invalid repository %s before reading GitHub', (repo) => {
+  const f = fixture()
+  expect(() => selectCuaHelperArtifact(repo, { cua_run_id: '123' }, f.api)).toThrow('invalid repository')
+  expect(f.api).not.toHaveBeenCalled()
+})
+
+it.each(['workflow', 'event', 'repository', 'id', 'attempt', 'running', 'failed'] as const)('rejects %s run evidence', (change) => {
+  const f = fixture()
+  if (change === 'workflow') f.run.path = '.github/workflows/ci.yml'
+  if (change === 'event') f.run.event = 'pull_request'
+  if (change === 'repository') f.run.repository.full_name = 'outsider/fork'
+  if (change === 'id') f.run.id = 124
+  if (change === 'attempt') f.run.run_attempt = 1
+  if (change === 'running') f.run.status = 'in_progress'
+  if (change === 'failed') f.run.conclusion = 'failure'
+  expect(() => selectCuaHelperArtifact(repository, { cua_run_id: '123' }, f.api)).toThrow()
+  expect(f.api.mock.calls.some(([path]) => path.includes('/artifacts'))).toBe(false)
+})
+
+it.each(['failure', 'cancelled', 'skipped', 'missing', 'duplicate'])(
+  'rejects %s helper jobs without falling back to attempt 1', (status) => {
+    const f = fixture()
+    f.run.path = '.github/workflows/release-publish.yml'
+    f.run.conclusion = 'failure'
+    f.jobs[0]!.jobs = status === 'missing' ? [] : status === 'duplicate'
+      ? [{ name: 'cua-helper / package', conclusion: 'success' }, { name: 'cua-helper / package', conclusion: 'success' }]
+      : [{ name: 'cua-helper / package', conclusion: status }]
+    expect(() => selectCuaHelperArtifact(repository, { cua_run_id: '123' }, f.api)).toThrow('successful cua-helper / package job')
+    expect(f.api.mock.calls.some(([path]) => path.includes('/attempts/1') || path.includes('/artifacts'))).toBe(false)
+  },
+)
+
+it.each(['missing', 'expired', 'empty', 'duplicate'] as const)('rejects %s artifacts instead of another attempt', (change) => {
+  const f = fixture()
+  if (change === 'missing') f.artifacts.pop()
+  if (change === 'expired') f.artifact.expired = true
+  if (change === 'empty') f.artifact.size_in_bytes = 0
+  if (change === 'duplicate') f.artifacts.push({ artifacts: [{ ...f.artifact, id: 457 }] })
+  expect(() => selectCuaHelperArtifact(repository, { cua_run_id: '123' }, f.api)).toThrow('select an available build or rebuild')
+})
+
+it('propagates unavailable GitHub evidence without returning a selection', () => {
+  const api = vi.fn(() => { throw new Error('HTTP 404') })
+  expect(() => selectCuaHelperArtifact(repository, { cua_run_id: '123' }, api)).toThrow('HTTP 404')
+  expect(api).toHaveBeenCalledTimes(1)
+})
diff --git a/scripts/cua-helper/select-artifact.ts b/scripts/cua-helper/select-artifact.ts
new file mode 100644
index 0000000000..8c8763c534
--- /dev/null
+++ b/scripts/cua-helper/select-artifact.ts
@@ -0,0 +1,74 @@
+/** Select one retained, successful CUA packaging attempt without contacting the Mac runner. */
+import { execFileSync } from 'node:child_process'
+import { appendFileSync, readFileSync } from 'node:fs'
+import { resolve } from 'node:path'
+import { z } from 'zod'
+
+const positiveId = z.string().regex(/^[1-9]\d*$/u)
+const inputsSchema = z.object({
+  cua_run_id: positiveId,
+  cua_run_attempt: z.union([positiveId, z.literal('')]).optional(),
+})
+const runSchema = z.object({
+  id: z.number().int().positive(), run_attempt: z.number().int().positive(),
+  status: z.literal('completed'), conclusion: z.string().nullable(), event: z.literal('workflow_dispatch'),
+  path: z.enum(['.github/workflows/cua-helper-package.yml', '.github/workflows/release-publish.yml']),
+  repository: z.object({ full_name: z.string() }),
+})
+const jobsSchema = z.array(z.object({ jobs: z.array(z.object({ name: z.string(), conclusion: z.string().nullable() })) }))
+const artifactsSchema = z.array(z.object({ artifacts: z.array(z.object({
+  id: z.number().int().positive(), name: z.string(), expired: z.boolean(), size_in_bytes: z.number().int().nonnegative(),
+})) }))
+
+/**
+ * Pin an explicit attempt or the latest attempt once, then select its immutable artifact ID.
+ * A successful helper job in a completed publication run is reusable even if later npm jobs failed.
+ * Failure returns no selection; there is no fallback to another attempt. Payload validation remains with stage.ts.
+ * @param repository - Repository containing the producer and consuming release.
+ * @param inputsValue - Untrusted dispatch fields cua_run_id and optional cua_run_attempt.
+ * @param api - Read-only GitHub JSON reader; paginated responses must be arrays of pages.
+ * @returns Exact run, attempt and artifact to download before source/version and application validation.
+ */
+export function selectCuaHelperArtifact(repository: string, inputsValue: unknown,
+  api: (path: string, paginate?: boolean) => unknown): { runId: string; attempt: string; artifactId: string } {
+  if (!/^[\w.-]+\/[\w.-]+$/u.test(repository) || repository.split('/').some(part => part === '.' || part === '..')) {
+    throw new Error('CUA reuse: invalid repository')
+  }
+  const inputs = inputsSchema.parse(inputsValue)
+  const base = `repos/${repository}/actions/runs/${inputs.cua_run_id}`
+  const attempt = inputs.cua_run_attempt
+    || String(z.object({ run_attempt: z.number().int().positive() }).parse(api(base)).run_attempt)
+  const run = runSchema.parse(api(`${base}/attempts/${attempt}`))
+  if (String(run.id) !== inputs.cua_run_id || String(run.run_attempt) !== attempt || run.repository.full_name !== repository) {
+    throw new Error('CUA reuse: selected run, attempt or repository does not match GitHub evidence')
+  }
+  const jobName = run.path === '.github/workflows/cua-helper-package.yml' ? 'package' : 'cua-helper / package'
+  if (jobName === 'package' && run.conclusion !== 'success') {
+    throw new Error('CUA reuse: standalone packaging did not succeed; select a successful attempt')
+  }
+  const jobs = jobsSchema.parse(api(`${base}/attempts/${attempt}/jobs?per_page=100`, true))
+    .flatMap(page => page.jobs).filter(job => job.name === jobName)
+  if (jobs.length !== 1 || jobs[0]?.conclusion !== 'success') {
+    throw new Error(`CUA reuse: run ${inputs.cua_run_id}, attempt ${attempt} requires one successful ${jobName} job;`
+      + ' select a successful attempt')
+  }
+  const name = `cua-helper-${inputs.cua_run_id}-${attempt}`
+  const artifacts = artifactsSchema.parse(api(`${base}/artifacts?per_page=100`, true))
+    .flatMap(page => page.artifacts).filter(artifact => artifact.name === name)
+  const [artifact] = artifacts
+  if (artifacts.length !== 1 || artifact === undefined || artifact.expired || artifact.size_in_bytes === 0) {
+    throw new Error(`CUA reuse: ${name} is missing, expired, empty or ambiguous; select an available build or rebuild`)
+  }
+  return { runId: inputs.cua_run_id, attempt, artifactId: String(artifact.id) }
+}
+
+if (process.argv[1] !== undefined && resolve(process.argv[1]) === import.meta.filename) {
+  const env = process.env
+  if (!env.GITHUB_EVENT_PATH || !env.GITHUB_REPOSITORY || !env.GITHUB_OUTPUT) throw new Error('CUA reuse: Actions context required')
+  const event = z.object({ inputs: inputsSchema }).parse(JSON.parse(readFileSync(env.GITHUB_EVENT_PATH, 'utf8')))
+  const selection = selectCuaHelperArtifact(env.GITHUB_REPOSITORY, event.inputs, (path, paginate) =>
+    JSON.parse(execFileSync('gh', ['api', ...(paginate ? ['--paginate', '--slurp'] : []), path],
+      { encoding: 'utf8', timeout: 60_000, maxBuffer: 8 * 1024 * 1024 })))
+  appendFileSync(env.GITHUB_OUTPUT, `artifact-id=${selection.artifactId}\nattempt=${selection.attempt}\n`)
+  console.log(`CUA helper: run ${selection.runId}, attempt ${selection.attempt}, artifact ${selection.artifactId}`)
+}
diff --git a/scripts/cua-helper/smoke.py b/scripts/cua-helper/smoke.py
new file mode 100644
index 0000000000..513f133958
--- /dev/null
+++ b/scripts/cua-helper/smoke.py
@@ -0,0 +1,107 @@
+"""Query a distributed helper without requesting system permissions or inspecting applications."""
+import hashlib
+import json
+import os
+from pathlib import Path
+import signal
+import socket
+import subprocess
+import sys
+import tempfile
+import time
+
+
+def report_output(stdout, stderr):
+    """Render captured bytes for diagnostics without changing protocol input."""
+    for label, output in [("stdout", stdout), ("stderr", stderr)]:
+        if output:
+            text = output.decode("utf-8", errors="replace") if isinstance(output, bytes) else output
+            print(f"CUA smoke command {label}:\n{text}", file=sys.stderr, flush=True)
+
+
+def run_checked(command, timeout):
+    """Return captured bytes and preserve native diagnostics on failure or timeout."""
+    try:
+        return subprocess.run(command, check=True, capture_output=True, timeout=timeout)
+    except (subprocess.CalledProcessError, subprocess.TimeoutExpired) as error:
+        report_output(error.stdout, error.stderr)
+        raise
+
+
+def parse_startup_reply(result):
+    """Retain both output streams when a successful command returns an unreadable reply."""
+    try:
+        return json.loads(result.stdout.decode("utf-8"))
+    except (json.JSONDecodeError, UnicodeDecodeError):
+        report_output(result.stdout, result.stderr)
+        raise
+
+
+def wait_for_exit(pid, seconds):
+    deadline = time.monotonic() + seconds
+    while time.monotonic() < deadline:
+        try:
+            os.kill(pid, 0)
+        except ProcessLookupError:
+            return True
+        time.sleep(0.025)
+    return False
+
+
+def main():
+    executable = Path(sys.argv[1]).resolve(strict=True)
+    key = hashlib.sha256(executable.read_bytes()).hexdigest()
+    pid = None
+    with tempfile.TemporaryDirectory(prefix="cua-smoke-", dir="/tmp") as directory:
+        os.chmod(directory, 0o700)
+        try:
+            started = run_checked([str(executable), "--ensure-shared", "--runtime-key", key,
+                                   "--runtime-directory", directory, "--startup-timeout-ms", "15000"], 25)
+            ready = parse_startup_reply(started)
+            assert ready["runtimeKey"] == key and ready["type"] == "ready", ready
+            pid = ready["pid"]
+            with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as connection:
+                connection.settimeout(20)
+                connection.connect(f"{directory}/{key}.sock")
+                stream = connection.makefile("rwb", buffering=0)
+                hello = {"type": "hello", "protocol": 1, "runtimeKey": key, "config": {
+                    "maxRequestBytes": 1048576, "maxResponseBytes": 33554432, "axTimeoutMs": 3000,
+                    "textEventIntervalMs": 0.25, "maxClickHoldMs": 5000, "screenshotTimeoutMs": 5000,
+                    "timeoutMs": 30000, "graceMs": 5000,
+                }}
+                stream.write((json.dumps(hello) + "\n").encode())
+                admitted = json.loads(stream.readline())
+                assert admitted["type"] == "ready" and admitted["pid"] == pid, admitted
+                for method in ["getCapabilities", "permissionStatus"]:
+                    stream.write((json.dumps({"id": method, "method": method, "params": {}}) + "\n").encode())
+                    response = json.loads(stream.readline())
+                    assert response["id"] == method and "result" in response, response
+                    result = response["result"]
+                    if method == "getCapabilities":
+                        assert result["platform"] == "macos", result
+                    else:
+                        assert result["launchApplication"]["name"] == "DSH Computer Use.app", result.get("launchApplication", {}).get("name")
+                        assert isinstance(result["accessibility"], bool) and isinstance(result["screenRecording"], bool)
+                connection.shutdown(socket.SHUT_WR)
+                assert stream.read() == b"", "helper did not acknowledge connection cleanup"
+                stream.close()
+            assert wait_for_exit(pid, 10), "helper remained alive after its final connection closed"
+            pid = None
+            print("CUA distribution smoke: capabilities, helper identity and cleanup passed")
+        finally:
+            if pid is not None:
+                for action in [signal.SIGTERM, signal.SIGKILL]:
+                    try:
+                        os.kill(pid, action)
+                    except ProcessLookupError:
+                        break
+                    if wait_for_exit(pid, 5):
+                        break
+                else:
+                    raise RuntimeError("failed helper did not exit during cleanup")
+            run_checked(["/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister",
+                         "-u", str(executable.parents[2])], 10)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/scripts/cua-helper/smoke.spec.ts b/scripts/cua-helper/smoke.spec.ts
new file mode 100644
index 0000000000..730ae8a5d3
--- /dev/null
+++ b/scripts/cua-helper/smoke.spec.ts
@@ -0,0 +1,13 @@
+/** Native smoke failures must expose the captured launch error in CI logs. */
+import { execa } from 'execa'
+import { expect, it } from 'vitest'
+
+it.skipIf(process.platform === 'win32')('retains native startup and timeout diagnostics', async ({ signal }) => {
+  const result = await execa('python3', ['-B', '-m', 'unittest', 'discover', '-s', 'scripts/cua-helper', '-p', 'test_smoke.py'], {
+    cancelSignal: signal, killDescendants: true, reject: false,
+  })
+  expect(result.isCanceled).toBe(false)
+  expect(result.signal).toBeUndefined()
+  expect(result.exitCode, result.stderr).toBe(0)
+  expect(result.stderr).toMatch(/Ran [1-9]\d* tests?\b/)
+})
diff --git a/scripts/cua-helper/stage.ts b/scripts/cua-helper/stage.ts
new file mode 100644
index 0000000000..5ea7264ad1
--- /dev/null
+++ b/scripts/cua-helper/stage.ts
@@ -0,0 +1,14 @@
+/** Stage the signed helper artifact selected by the credential-free npm pack job. */
+import { execFileSync } from 'node:child_process'
+import { readFileSync } from 'node:fs'
+import { resolve } from 'node:path'
+import { parseArgs } from 'node:util'
+import { stageCuaHelperPayload } from './payload.ts'
+
+const { values } = parseArgs({ options: { from: { type: 'string' } }, allowPositionals: false })
+if (!values.from) throw new Error('Usage: stage.ts --from <extracted-helper-artifact>')
+const root = resolve(import.meta.dirname, '../..')
+const { version } = JSON.parse(readFileSync(resolve(root, 'package.json'), 'utf8')) as { version: string }
+const commit = execFileSync('git', ['rev-parse', 'HEAD'], { cwd: root, encoding: 'utf8' }).trim()
+stageCuaHelperPayload(resolve(values.from), resolve(root, 'packages/experimental/cua-macos'), { version, commit })
+console.log(`CUA helper staged for ${version} (${commit})`)
diff --git a/scripts/cua-helper/test_smoke.py b/scripts/cua-helper/test_smoke.py
new file mode 100644
index 0000000000..8a78bb1eaa
--- /dev/null
+++ b/scripts/cua-helper/test_smoke.py
@@ -0,0 +1,93 @@
+"""Smoke command failures retain native diagnostics without performing desktop operations."""
+from contextlib import redirect_stderr
+import io
+import json
+import subprocess
+import sys
+import unittest
+from unittest.mock import patch
+
+import smoke
+
+
+class SmokeDiagnostics(unittest.TestCase):
+    def test_success_returns_captured_reply_without_replaying_it(self):
+        result = subprocess.CompletedProcess(["helper"], 0, b'{"type":"ready"}', b"")
+        diagnostics = io.StringIO()
+        with patch.object(smoke.subprocess, "run", return_value=result) as run, redirect_stderr(diagnostics):
+            self.assertIs(smoke.run_checked(["helper"], 25), result)
+        run.assert_called_once_with(["helper"], check=True, capture_output=True, timeout=25)
+        self.assertEqual(diagnostics.getvalue(), "")
+
+    def test_native_failure_keeps_code_message_and_stderr(self):
+        error = subprocess.CalledProcessError(1, ["helper"],
+                                            output='{"type":"error","code":"NATIVE_STARTUP","message":"launch failed"}',
+                                            stderr="native diagnostic")
+        diagnostics = io.StringIO()
+        with patch.object(smoke.subprocess, "run", side_effect=error), redirect_stderr(diagnostics):
+            with self.assertRaises(subprocess.CalledProcessError) as raised:
+                smoke.run_checked(["helper"], 25)
+        self.assertIs(raised.exception, error)
+        self.assertIn(error.stdout, diagnostics.getvalue())
+        self.assertIn(error.stderr, diagnostics.getvalue())
+
+    def test_timeout_keeps_partial_bytes_and_reraises(self):
+        error = subprocess.TimeoutExpired(["helper"], 25, output=b"partial reply\xff", stderr=b"startup timeout")
+        diagnostics = io.StringIO()
+        with patch.object(smoke.subprocess, "run", side_effect=error), redirect_stderr(diagnostics):
+            with self.assertRaises(subprocess.TimeoutExpired) as raised:
+                smoke.run_checked(["helper"], 25)
+        self.assertIs(raised.exception, error)
+        self.assertIn("partial reply\ufffd", diagnostics.getvalue())
+        self.assertIn("startup timeout", diagnostics.getvalue())
+
+    def test_non_utf8_command_output_preserves_exit_status(self):
+        for status in [0, 1]:
+            with self.subTest(status=status):
+                command = [sys.executable, "-c",
+                           f"import os, sys; os.write(1, b'out\\xff'); os.write(2, b'err\\xfe'); sys.exit({status})"]
+                diagnostics = io.StringIO()
+                with redirect_stderr(diagnostics):
+                    if status == 0:
+                        result = smoke.run_checked(command, 10)
+                        self.assertEqual(result.stdout, b"out\xff")
+                        self.assertEqual(result.stderr, b"err\xfe")
+                        self.assertEqual(diagnostics.getvalue(), "")
+                    else:
+                        with self.assertRaises(subprocess.CalledProcessError) as raised:
+                            smoke.run_checked(command, 10)
+                        self.assertEqual(raised.exception.returncode, status)
+                        self.assertEqual(raised.exception.stdout, b"out\xff")
+                        self.assertIn("out\ufffd", diagnostics.getvalue())
+                        self.assertIn("err\ufffd", diagnostics.getvalue())
+
+    def test_valid_startup_reply_stays_silent(self):
+        result = subprocess.CompletedProcess(["helper"], 0, b'{"type":"ready"}', b"diagnostic")
+        diagnostics = io.StringIO()
+        with redirect_stderr(diagnostics):
+            self.assertEqual(smoke.parse_startup_reply(result), {"type": "ready"})
+        self.assertEqual(diagnostics.getvalue(), "")
+
+    def test_empty_or_malformed_startup_reply_retains_output_and_fails(self):
+        for stdout in [b"", b"launch diagnostic\n"]:
+            with self.subTest(stdout=stdout):
+                result = subprocess.CompletedProcess(["helper"], 0, stdout, b"native diagnostic")
+                diagnostics = io.StringIO()
+                with redirect_stderr(diagnostics), self.assertRaises(json.JSONDecodeError) as raised:
+                    smoke.parse_startup_reply(result)
+                self.assertEqual(raised.exception.doc, stdout.decode())
+                self.assertIn("native diagnostic", diagnostics.getvalue())
+                if stdout:
+                    self.assertIn(stdout.decode(), diagnostics.getvalue())
+
+    def test_invalid_startup_encoding_is_rejected_and_reported(self):
+        result = subprocess.CompletedProcess(["helper"], 0, b'{"type":"ready", "message":"\xff"}', b"native diagnostic")
+        diagnostics = io.StringIO()
+        with redirect_stderr(diagnostics), self.assertRaises(UnicodeDecodeError):
+            smoke.parse_startup_reply(result)
+        self.assertIn('"message":"\ufffd"', diagnostics.getvalue())
+        self.assertIn("native diagnostic", diagnostics.getvalue())
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/scripts/cua-helper/verify-tarball.ts b/scripts/cua-helper/verify-tarball.ts
new file mode 100644
index 0000000000..9eb9a006c0
--- /dev/null
+++ b/scripts/cua-helper/verify-tarball.ts
@@ -0,0 +1,24 @@
+/** Reject incomplete or modified CUA payloads before any npm publication. */
+import { mkdtempSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { extract } from 'tar'
+import { verifyCuaHelperPayload } from './payload.ts'
+
+/**
+ * Verify both helper applications in the exact provider tarball being published.
+ * @param tarball - pnpm-produced provider package archive.
+ * @param expected - Product version and source commit of the publishing checkout.
+ * @returns Resolves only when the archive has complete, digest-verified application generations.
+ */
+export async function verifyCuaHelperTarball(tarball: string, expected: { version: string; commit: string }): Promise<void> {
+  const root = mkdtempSync(join(tmpdir(), 'cua-publish-verify-'))
+  try {
+    await extract({ file: tarball, cwd: root, strict: true, filter: (path, entry) => {
+      if (!path.startsWith('package/') || path.split('/').includes('..')
+        || !('type' in entry) || !['File', 'Directory'].includes(entry.type)) throw new Error(`Invalid CUA package entry: ${path}`)
+      return true
+    } })
+    verifyCuaHelperPayload(join(root, 'package'), expected)
+  } finally { rmSync(root, { recursive: true, force: true }) }
+}
diff --git a/scripts/dev-bundle-registry.ts b/scripts/dev-bundle-registry.ts
index 14313b25bd..26f3ec1f27 100644
--- a/scripts/dev-bundle-registry.ts
+++ b/scripts/dev-bundle-registry.ts
@@ -123,6 +123,9 @@ async function main(): Promise<void> {
     // 2. Current official artifacts, so the run never serves an earlier build.
     await runStep(root, ['run', 'build:official'], abort.signal, 'build:official')
     verifyBuiltBundles({ entries, packages })
+    if (selection.members.some(member => member.name === '@deepseek-ai/dsh-experimental-cua-macos')) {
+      await runStep(root, ['--dir', 'packages/experimental/cua-macos', 'run', 'build:native'], abort.signal, 'CUA native build')
+    }
 
     // 3. One immutable, run-owned directory; a later run never overwrites these bytes.
     const buildId = runId()
diff --git a/scripts/gen-cordis-catalog.ts b/scripts/gen-cordis-catalog.ts
index c55cd0c793..9a44165e60 100644
--- a/scripts/gen-cordis-catalog.ts
+++ b/scripts/gen-cordis-catalog.ts
@@ -125,6 +125,7 @@ export const SERVICE_PAGE: Record<string, string> = {
   sessionController: 'session.md',
   sessionSkillCatalog: 'skills.md',
   sessions: 'session.md',
+  sessionLogDeepSeek: 'session.md',
   settings: 'settings.md',
   sessionTitle: 'session-title.md',
   skills: 'skills.md',
@@ -138,6 +139,7 @@ export const SERVICE_PAGE: Record<string, string> = {
   jobs: 'jobs.md',
   jobController: 'jobs.md',
   sessionTelemetry: 'session-telemetry.md',
+  liveshareShares: 'liveshare.md',
   agentTeams: 'agent-team.md',
   claudeCodeMods: 'claude-code-mods.md',
   tokenMeter: 'token-meter.md',
@@ -177,6 +179,8 @@ export const SERVICE_PAGE: Record<string, string> = {
  * to a model as `cordis_runtime_inspect what:"client"`).
  */
 export const SERVICE_WALK_EXEMPTIONS: Record<string, string> = {
+  contextMenus: 'client-side interface-typed menu registry — packages/client/ui-context-menu/README.md owns the API',
+  fileActions: 'client-side interface-typed file actions — packages/client/ui-file-actions/README.md owns the API',
   invocation: 'not a service: per-call accessor (RemoteInvocation | undefined) the Gateway derives for each Remote call — packages/api/gateway/README.md owns the contract',
   webTerminals: 'client-side terminal view models — packages/api/terminal-controller/README.md owns the API',
   appReady: 'not a service: launcher-provided successful-startup signal — packages/boot/cmdline/README.md owns the launcher contract',
@@ -353,6 +357,25 @@ export const LINK_MAP: Readonly<Record<string, string>> = {
   OfficeToPdfResult: 'office-to-pdf.md',
   OfficeToPdfPriority: 'office-to-pdf.md',
   OfficeToPdfGeneration: 'office-to-pdf.md',
+  CreatedShare: 'liveshare.md',
+  CreateShareRequest: 'liveshare.md',
+  OwnerIdentityRequest: 'liveshare.md',
+  OwnerIdentityStatus: 'liveshare.md',
+  OwnerRelayState: 'liveshare.md',
+  OwnerShareList: 'liveshare.md',
+  RelayConnectivityView: 'liveshare.md',
+  RelayPublishView: 'liveshare.md',
+  SetRelayRequest: 'liveshare.md',
+  SetShareCapabilitiesRequest: 'liveshare.md',
+  ShareAudit: 'liveshare.md',
+  ShareAuditRequest: 'liveshare.md',
+  ShareCapabilities: 'liveshare.md',
+  ShareCapabilityOffers: 'liveshare.md',
+  SharePermissions: 'liveshare.md',
+  StopShareRequest: 'liveshare.md',
+  StopShareResult: 'liveshare.md',
+  TestPublishRequest: 'liveshare.md',
+  UpdateSharePermissionsRequest: 'liveshare.md',
   Agent: 'core.md',
   AgentCancelCause: 'core.md',
   AgentFactory: 'core.md',
@@ -373,8 +396,12 @@ export const LINK_MAP: Readonly<Record<string, string>> = {
   RestoredWorktree: 'worktrees.md',
   ChangeRequestListener: 'forge.md',
   ChangeRequestRef: 'forge.md',
+  ChangeRequestSnapshot: 'forge.md',
   ChangeRequestUpdate: 'forge.md',
   ForgeActionFailure: 'forge.md',
+  ForgeLineComment: 'forge.md',
+  ForgeReviewRequest: 'forge.md',
+  ForgeReviewResult: 'forge.md',
   ForgeBranches: 'forge.md',
   ForgeChangeRequestDiff: 'forge.md',
   ForgeChangeRequestStatesFrame: 'forge.md',
@@ -689,6 +716,8 @@ export const LINK_MAP: Readonly<Record<string, string>> = {
   AgentMessageSource: 'subagent.md',
   SubagentCatalogEntry: 'subagent.md',
   SubagentCatalogState: 'subagent.md',
+  SessionLogUploadRequest: 'session.md',
+  SessionLogUploadExclusion: 'session.md',
   SessionProjectionsRequest: 'session.md',
   SessionProjectionsValue: 'session.md',
   SubagentDescendantListEntry: 'subagent.md',
@@ -1104,15 +1133,16 @@ export const CORDIS_CATALOG_POLICY: CordisCatalogPolicy = {
     ],
   }],
   inheritedEvents: [
-    { name: 'internal/plugin', summary: 'A plugin fiber was created.', source: 'vendor/cordis/src/events.ts:331' },
-    { name: 'internal/status', summary: 'A fiber changed lifecycle state.', source: 'vendor/cordis/src/events.ts:333' },
-    { name: 'internal/service', summary: 'Interception hook for a service binding (no core producer).', source: 'vendor/cordis/src/events.ts:341' },
-    { name: 'internal/update', summary: 'Waterfall: a fiber config update is being applied.', source: 'vendor/cordis/src/events.ts:343' },
-    { name: 'internal/config', summary: 'Waterfall: a fiber config is being resolved before validation.', source: 'vendor/cordis/src/events.ts:339' },
-    { name: 'internal/get', summary: 'Waterfall: a service is being read from the store.', source: 'vendor/cordis/src/events.ts:345' },
-    { name: 'internal/set', summary: 'Waterfall: a service is being written to the store.', source: 'vendor/cordis/src/events.ts:347' },
-    { name: 'internal/listener', summary: 'A listener was registered.', source: 'vendor/cordis/src/events.ts:349' },
-    { name: 'internal/dispatch', summary: 'An event is being dispatched to listeners.', source: 'vendor/cordis/src/events.ts:351' },
+    { name: 'internal/plugin', summary: 'A plugin fiber was created.', source: 'vendor/cordis/src/events.ts:337' },
+    { name: 'internal/status', summary: 'A fiber changed lifecycle state.', source: 'vendor/cordis/src/events.ts:339' },
+    { name: 'internal/service', summary: 'A service binding was refreshed in the matching isolation scope.', source: 'vendor/cordis/src/events.ts:341' },
+    { name: 'internal/update', summary: 'Waterfall: apply resolved config; omitting next() keeps the current instance.', source: 'vendor/cordis/src/events.ts:348' },
+    { name: 'internal/commit', summary: 'Persist raw config from a programmatic update unless noSave is set.', source: 'vendor/cordis/src/events.ts:355' },
+    { name: 'internal/config', summary: 'Waterfall: resolve a candidate after injections are active without publishing it.', source: 'vendor/cordis/src/events.ts:362' },
+    { name: 'internal/get', summary: 'Waterfall: a service is being read from the store.', source: 'vendor/cordis/src/events.ts:364' },
+    { name: 'internal/set', summary: 'Waterfall: a service is being written to the store.', source: 'vendor/cordis/src/events.ts:366' },
+    { name: 'internal/listener', summary: 'A listener was registered.', source: 'vendor/cordis/src/events.ts:368' },
+    { name: 'internal/dispatch', summary: 'An event is being dispatched to listeners.', source: 'vendor/cordis/src/events.ts:370' },
     { name: 'exit', summary: 'The process is exiting on a signal.', source: 'vendor/loader/src/index.ts:25' },
     { name: 'loader/config-update', summary: 'The loader config tree changed.', source: 'vendor/loader/src/index.ts:26' },
     { name: 'loader/entry-init', summary: 'A config entry is being initialized.', source: 'vendor/loader/src/index.ts:27' },
diff --git a/scripts/gen-doc-graphs.ts b/scripts/gen-doc-graphs.ts
index ca30079be5..8ae13b8116 100644
--- a/scripts/gen-doc-graphs.ts
+++ b/scripts/gen-doc-graphs.ts
@@ -216,7 +216,7 @@ const SERVICE_ROLES: ServiceRole[] = [
     pkg: 'experimental-client-ui-forge',
     title: 'Forge panel Remote',
     mode: 'service',
-    note: 'Streams one panel state per followed Session: a read-only Git inspection in the Session sandbox, the recognized code host and its sign-in, and the bound change requests with polled status.',
+    note: 'Streams one panel state per followed Session: Git inspection using Session permissions, the recognized code host and its sign-in, and the bound change requests with polled status.',
   },
   {
     key: 'worktrees',
@@ -299,6 +299,14 @@ const SERVICE_ROLES: ServiceRole[] = [
     consumers: ['agent-loop', 'compaction-basic'],
     note: 'Adapters register provider implementations; the loop and compaction call the provider-neutral stream service.',
   },
+  {
+    key: 'sessionLogDeepSeek',
+    pkg: 'session-log-deepseek',
+    title: 'Session-log upload policy',
+    mode: 'core',
+    implementations: [],
+    note: 'Plugins register caller-owned exclusions before the canonical Session-log request contribution is prepared; unmatched requests use normal upload eligibility.',
+  },
   {
     key: 'deepseekLlmApiExtensions',
     pkg: 'deepseek-llm-api-extensions',
@@ -959,6 +967,13 @@ const SERVICE_ROLES: ServiceRole[] = [
     consumers: ['tool-cordis'],
     note: 'Registers host inspect providers, mirrors the client provider manifest, and routes client queries through the dynamic Cordis transport.',
   },
+  {
+    key: 'liveshareShares',
+    pkg: 'experimental-liveshare',
+    title: 'Owner share management Remote',
+    mode: 'service',
+    note: 'Publishes the owner share-management operations as one Typert Remote namespace that the owner client face calls; every method delegates to the same operations the same-origin routes used.',
+  },
 ]
 
 function generatedHeader(title: string): string[] {
diff --git a/scripts/gen-official-bundle-catalog.spec.ts b/scripts/gen-official-bundle-catalog.spec.ts
index 316f4ea800..8ca4381dce 100644
--- a/scripts/gen-official-bundle-catalog.spec.ts
+++ b/scripts/gen-official-bundle-catalog.spec.ts
@@ -81,6 +81,17 @@ describe('Official bundle catalog generation', () => {
     expect(() => { syncOfficialBundleCatalog(root, true) }).toThrow('is stale')
   })
 
+  it('preserves default-hidden discovery before installation', () => {
+    const root = fixture()
+    const name = ON_DEMAND_BUNDLES[0]!
+    updateManifest(root, name, { dsh: { bundle: { patch: './cordis.patch.yml', listedByDefault: false } } })
+    expect(generateOfficialBundleCatalog(root)[0]?.listedByDefault).toBe(false)
+    syncOfficialBundleCatalog(root, false)
+    expect(readFileSync(join(root, output), 'utf8')).toContain('listedByDefault: false')
+    updateManifest(root, name, { dsh: { bundle: { patch: './cordis.patch.yml', listedByDefault: 'hidden' } } })
+    expect(() => generateOfficialBundleCatalog(root)).toThrow('listedByDefault must be a boolean')
+  })
+
   it.each([[], ['macos'], 'darwin'].map(platforms => ({ platforms })))('rejects invalid package platform metadata $platforms', ({ platforms }) => {
     const root = fixture()
     updateManifest(root, ON_DEMAND_BUNDLES[0]!, { dsh: { bundle: { patch: './cordis.patch.yml', platforms } } })
diff --git a/scripts/gen-official-bundle-catalog.ts b/scripts/gen-official-bundle-catalog.ts
index 4336e998c2..b9f703b927 100644
--- a/scripts/gen-official-bundle-catalog.ts
+++ b/scripts/gen-official-bundle-catalog.ts
@@ -22,7 +22,7 @@ const OUTPUT = 'packages/util/official-bundles/src/catalog.generated.ts'
  */
 export function generateOfficialBundleCatalog(root: string, names: readonly string[] = ON_DEMAND_BUNDLES): OfficialBundleCatalogEntry[] {
   if (names.length === 0 || new Set(names).size !== names.length) throw new Error('Official on-demand catalog must contain distinct package names')
-  const manifests = new Map<string, { path: string; private: boolean; bundle: boolean; platforms?: DshBundleManifest['platforms']; runtime: string[] }>()
+  const manifests = new Map<string, { path: string; private: boolean; bundle: boolean; platforms?: DshBundleManifest['platforms']; listedByDefault?: boolean; runtime: string[] }>()
   for (const path of globSync(['packages/*/*/package.json', 'apps/*/package.json', 'vendor/*/package.json'], { cwd: root }).map(path => path.replaceAll('\\', '/')).sort()) {
     const manifest = JSON.parse(readFileSync(resolve(root, path), 'utf8')) as {
       name: string
@@ -30,12 +30,15 @@ export function generateOfficialBundleCatalog(root: string, names: readonly stri
       dependencies?: Record<string, string>
       optionalDependencies?: Record<string, string>
       peerDependencies?: Record<string, string>
-      dsh?: { bundle?: { patch?: unknown; platforms?: DshBundleManifest['platforms'] } }
+      dsh?: { bundle?: { patch?: unknown; platforms?: DshBundleManifest['platforms']; listedByDefault?: boolean } }
     }
     if (manifests.has(manifest.name)) throw new Error(`duplicate workspace package ${manifest.name}`)
+    const listedByDefault = manifest.dsh?.bundle?.listedByDefault
+    if (listedByDefault !== undefined && typeof listedByDefault !== 'boolean') throw new Error(`${manifest.name}: dsh.bundle.listedByDefault must be a boolean`)
     const runtime = ['dependencies', 'optionalDependencies', 'peerDependencies'] as const
     manifests.set(manifest.name, { path, private: manifest.private === true, bundle: manifest.dsh?.bundle?.patch !== undefined,
       ...manifest.dsh?.bundle?.platforms === undefined ? {} : { platforms: manifest.dsh.bundle.platforms },
+      ...listedByDefault === undefined ? {} : { listedByDefault },
       runtime: runtime.flatMap(section => Object.keys(manifest[section] ?? {})) })
   }
   const visited = new Set<string>()
@@ -77,7 +80,9 @@ export function generateOfficialBundleCatalog(root: string, names: readonly stri
         }
       }
     }
-    return { packageName, ...entry.platforms === undefined ? {} : { platforms: entry.platforms },
+    return { packageName,
+      ...entry.listedByDefault === undefined ? {} : { listedByDefault: entry.listedByDefault },
+      ...entry.platforms === undefined ? {} : { platforms: entry.platforms },
       meta: { title: meta.title, description: meta.description, icon: meta.icon } }
   })
 }
@@ -95,6 +100,7 @@ export function renderOfficialBundleCatalog(entries: readonly OfficialBundleCata
     + entries.map(entry => '  {\n'
       + `    packageName: ${quote(entry.packageName)},\n`
       + (entry.platforms === undefined ? '' : `    platforms: [${entry.platforms.map(quote).join(', ')}],\n`)
+      + (entry.listedByDefault === undefined ? '' : `    listedByDefault: ${entry.listedByDefault},\n`)
       + '    meta: {\n'
       + `      title: ${localized(entry.meta.title)},\n`
       + `      description: ${localized(entry.meta.description)},\n`
diff --git a/scripts/loader-volatile-update.spec.ts b/scripts/loader-volatile-update.spec.ts
index f2a1c4671a..bdcb8917d3 100644
--- a/scripts/loader-volatile-update.spec.ts
+++ b/scripts/loader-volatile-update.spec.ts
@@ -4,6 +4,7 @@ import { tmpdir } from 'node:os'
 import { join } from 'node:path'
 import { pathToFileURL } from 'node:url'
 import { describe, expect, it, onTestFinished, vi } from 'vitest'
+import type { Awaitable } from '@deepseek-ai/cosmokit'
 import { Context, type Fiber, type Plugin } from '@deepseek-ai/cordis'
 import Loader, { Group } from '@deepseek-ai/cordis-plugin-loader'
 import Include from '@deepseek-ai/cordis-plugin-include'
@@ -110,7 +111,7 @@ describe('volatile Loader updates', () => {
   it('bypasses custom update hooks for volatile changes and retains them for mixed changes', async () => {
     const ctx = await runtimeContext()
     const hooks: string[] = []
-    const globalHook = vi.fn((_config: unknown, _noSave: boolean, next: () => void) => { next() })
+    const globalHook = vi.fn((_config: unknown, next: () => Awaitable<void>) => next())
     ctx.on('internal/update', globalHook, { global: true })
     const fiber = await mountEntry(ctx, { Config, apply(owner: Context) {
       owner.on('internal/update', (config: ReturnType<typeof Config>) => {
@@ -144,7 +145,7 @@ describe('volatile Loader updates', () => {
     await fiber.await()
     expect(apply).toHaveBeenCalledTimes(3)
     const ordinary = await mountEntry(ctx, { Config: z.object({ value: z.string() }), apply() { apply() } }, { value: 'same' })
-    ordinary.update({ value: 'same' })
+    await ordinary.update({ value: 'same' })
     await ordinary.await()
     expect(apply).toHaveBeenCalledTimes(5)
   })
@@ -243,9 +244,9 @@ it('reloads real YAML and persists plain values independently of custom update h
   expect(include.store.group!.fiber).toBe(group)
   expect(group.uid).toBe(groupUid)
   expect(configs[0]!.title.get()).toBe('file-update')
-  entry.fiber!.update({ title: 'program-update', group: { list: ['item'] } })
+  await entry.fiber!.update({ title: 'program-update', group: { list: ['item'] } })
   expect(entry.options.config).toEqual({ title: 'program-update', group: { list: ['item'] } })
-  entry.fiber!.update({ title: 'ephemeral' }, true)
+  await entry.fiber!.update({ title: 'ephemeral' }, true)
   expect(entry.options.config).toEqual({ title: 'program-update', group: { list: ['item'] } })
   await ctx.fiber.dispose()
   const saved = await readFile(filename, 'utf8')
@@ -298,11 +299,11 @@ it('updates volatile children through Group and Include custom updates and saves
   const originalConsumer = consumer.fiber
   const initial = configs[0]!
 
-  group.fiber!.update([child('group-update')])
+  await group.fiber!.update([child('group-update')])
   await ctx.loader.await()
   expect(initial.title.get()).toBe('group-update')
   expect(group.options.config).toEqual([child('group-update')])
-  includeEntry.fiber!.update({ path: includePath, patches: [{ id: 'consumer', config: { title: 'include-update' } }] })
+  await includeEntry.fiber!.update({ path: includePath, patches: [{ id: 'consumer', config: { title: 'include-update' } }] })
   await ctx.loader.await()
   expect(initial.title.get()).toBe('include-update')
   expect(includeEntry.fiber).toBe(originalInclude)
@@ -315,14 +316,14 @@ it('updates volatile children through Group and Include custom updates and saves
 
   const ordinary = await ctx.loader.create({ name: 'cordis:volatile-test', config: {} })
   const entry = ctx.loader.resolve(ordinary)
-  entry.fiber!.update({ title: 'custom-update', fixed: 'ordinary' })
+  await entry.fiber!.update({ title: 'custom-update', fixed: 'ordinary' })
   expect(childUpdates).toHaveBeenCalledOnce()
   expect(entry.options.config).toEqual({ title: 'custom-update', fixed: 'ordinary' })
-  expect((entry.fiber!.effectiveConfig as ReturnType<typeof Config>).title.get()).toBe('hello')
-  entry.fiber!.update({ title: 'ephemeral', fixed: 'ordinary' }, true)
+  expect((entry.fiber!.effectiveConfig as ReturnType<typeof Config>).title.get()).toBe('custom-update')
+  await entry.fiber!.update({ title: 'ephemeral', fixed: 'ordinary' }, true)
   expect(childUpdates).toHaveBeenCalledTimes(2)
   expect(entry.options.config).toEqual({ title: 'custom-update', fixed: 'ordinary' })
-  expect(() => { entry.fiber!.update({ nested: { count: -1 } }) }).toThrow()
+  expect(() => { void entry.fiber!.update({ nested: { count: -1 } }) }).toThrow()
   expect(childUpdates).toHaveBeenCalledTimes(2)
   expect(entry.options.config).toEqual({ title: 'custom-update', fixed: 'ordinary' })
 })
@@ -347,9 +348,9 @@ it('commits volatile edits in place and retains direct Fiber updates', async ()
   const current = fiber.effectiveConfig as ReturnType<typeof Config>
   expect(current.title.get()).toBe('mixed')
 
-  const hook = vi.fn((_config: unknown, _noSave: boolean, next: () => void) => { next() })
+  const hook = vi.fn((_config: unknown, next: () => Awaitable<void>) => next())
   fiber.ctx.on('internal/update', hook)
-  fiber.update({ title: 'direct' })
+  await fiber.update({ title: 'direct' })
   await fiber.await()
   expect(hook).toHaveBeenCalledOnce()
   expect(apply).toHaveBeenCalledTimes(3)
@@ -368,7 +369,7 @@ it('parses a volatile-only update through the config hook without patching the e
   const current = fiber.effectiveConfig as ReturnType<typeof Config>
   const resolveHook = vi.fn((_raw: unknown, next: () => unknown) => next())
   fiber.ctx.on('internal/config', resolveHook)
-  const contextPatch = vi.fn((_entry: unknown, next: () => void) => { next() })
+  const contextPatch = vi.fn((_entry: unknown, next: () => Awaitable<void>) => next())
   ctx.on('loader/patch-context', contextPatch)
   trim.mockClear()
   trace.length = 0
@@ -594,7 +595,7 @@ it('keeps an ordinary plugin mounted when an absent object becomes its explicit
 it('keeps a noSave volatile value as the pending raw config across a no-op entry update', async () => {
   const ctx = await runtimeContext()
   const fiber = await mountEntry(ctx, { Config, apply() {} }, { title: 'saved' })
-  fiber.update({ title: 'ephemeral' }, true)
+  await fiber.update({ title: 'ephemeral' }, true)
   await fiber.await()
   expect((fiber.effectiveConfig as ReturnType<typeof Config>).title.get()).toBe('ephemeral')
   expect(fiber.entry!.options.config).toEqual({ title: 'saved' })
diff --git a/scripts/local-bundle-registry.spec.ts b/scripts/local-bundle-registry.spec.ts
index fb2f9fc1e5..ea047d8aa6 100644
--- a/scripts/local-bundle-registry.spec.ts
+++ b/scripts/local-bundle-registry.spec.ts
@@ -133,8 +133,7 @@ describe('catalog and local closure', () => {
     // A vendor package keeps its own version line, so a run must not assume one shared version.
     expect(packages.get('@deepseek-ai/cordis')?.manifest.version)
       .not.toBe(packages.get('@deepseek-ai/dsh-brand')?.manifest.version)
-    // Nothing in this closure is built for another platform, on any host.
-    expect(selection.foreignTargets).toEqual([])
+    expect(selection.foreignTargets).toEqual(process.platform === 'darwin' ? [] : ['@deepseek-ai/dsh-experimental-cua-macos'])
   })
 
   it('follows install, optional, and required peer edges but not optional peers', () => {
diff --git a/scripts/no-unknown-casts.baseline.json b/scripts/no-unknown-casts.baseline.json
index bef0f27ca0..e0c111cb20 100644
--- a/scripts/no-unknown-casts.baseline.json
+++ b/scripts/no-unknown-casts.baseline.json
@@ -604,8 +604,6 @@
     "fd6a096d3e7b6ef3e57058b9246118020d10aab852ba64f3296ba07d9e8e7116": 1
   },
   "packages/client/ui-sidebar-documentpreview/tests/fixtures.client.ts": {
-    "410ac7f98f84d730fc008a23d09f26dd5e8d329c91df6e4d8977255b07935a4c": 1,
-    "5fac996b1dd9ca4a26580c92e56a82ebe711af84cb711042265e4c03d1997a17": 1,
     "bccbd200429e3147b8602a65bc06d46264a54c0318232051adeac835deaa311b": 1
   },
   "packages/client/ui-sidebar-documentpreview/tests/html-body.client.spec.tsx": {
diff --git a/scripts/package-dependency-policy.ts b/scripts/package-dependency-policy.ts
index 948d7a77b8..21ad78761d 100644
--- a/scripts/package-dependency-policy.ts
+++ b/scripts/package-dependency-policy.ts
@@ -51,11 +51,18 @@ const DUPLICATE_SAFE_PACKAGES: readonly string[] = [
  * prominent heading in the pull request description.
  */
 const SAFE_HOST_DEPENDENCY_EXPORTS = {
-  '@deepseek-ai/dsh-atomic-write': ['withFileLock'],
+  '@deepseek-ai/dsh-atomic-write': ['withFileLock', 'writeFileAtomic'],
   '@deepseek-ai/dsh-computer-use/brand': ['ComputerUseProviderName'],
   '@deepseek-ai/dsh-credentials': ['credentialKey'],
   '@deepseek-ai/dsh-deque': ['Deque'],
+  // The Liveshare wire codec and identity helpers are stateless functions over caller-owned values.
+  '@deepseek-ai/dsh-experimental-liveshare-protocol': [
+    'LIVESHARE_CAPABILITIES', 'LIVESHARE_PROTOCOL_VERSION', 'parseRelayFrame', 'parseShareAccessState',
+    'parseTunnelWorkerCommand', 'parseTunnelWorkerEvent', 'rawText', 'sendFrame', 'unsupportedFrameRefusal',
+    'viewerRequestFields', 'identityFromKey', 'identityKeyOf',
+  ],
   '@deepseek-ai/dsh-llm': ['callConfigEquals'],
+  '@deepseek-ai/dsh-session': ['SessionId'],
   '@deepseek-ai/dsh-session-format': ['sessionFormatLogFilename'],
   '@deepseek-ai/dsh-storage-domain': ['defineDomain'],
   '@deepseek-ai/dsh-timeout': ['MAX_TIMER_DELAY_MS'],
diff --git a/scripts/release/families.spec.ts b/scripts/release/families.spec.ts
index 1d03aeec9f..44d8988c46 100644
--- a/scripts/release/families.spec.ts
+++ b/scripts/release/families.spec.ts
@@ -86,6 +86,7 @@ describe('release families', () => {
       '@deepseek-ai/dsh-experimental-inspector-profile',
       '@deepseek-ai/dsh-experimental-inspector',
       '@deepseek-ai/dsh-experimental-liveshare-protocol',
+      '@deepseek-ai/dsh-experimental-liveshare',
       '@deepseek-ai/dsh-personalized-recommendations',
       '@deepseek-ai/dsh-experimental-plugin-market-bundle',
       '@deepseek-ai/dsh-plugin-recommendations',
@@ -263,7 +264,7 @@ describe('release families', () => {
     const dsh = member('apps/cli', '@deepseek-ai/dsh')
     const providers = ON_DEMAND_BUNDLES.map(name => member(`packages/subagent/${name}`, name))
     const plan = releaseFamily('dsh').publishOrder([dsh, ...providers])
-    expect(plan.order.map(entry => entry.name)).toEqual([...ON_DEMAND_BUNDLES, dsh.name])
+    expect(plan.order.map(entry => entry.name)).toEqual([...ON_DEMAND_BUNDLES.toSorted(), dsh.name])
     expect(dsh.manifest).toEqual({})
     expect(plan.droppedPeerEdges).toEqual([])
   })
@@ -279,8 +280,8 @@ describe('release families', () => {
       peerDependencies: { '@deepseek-ai/dsh': 'workspace:*' },
     }))
     const plan = releaseFamily('dsh').publishOrder([dsh, ...providers])
-    expect(plan.order.map(entry => entry.name)).toEqual([...ON_DEMAND_BUNDLES, dsh.name])
-    expect(plan.droppedPeerEdges).toEqual(ON_DEMAND_BUNDLES.map(name => ({ consumer: name, peer: dsh.name })))
+    expect(plan.order.map(entry => entry.name)).toEqual([...ON_DEMAND_BUNDLES.toSorted(), dsh.name])
+    expect(plan.droppedPeerEdges).toEqual(ON_DEMAND_BUNDLES.toSorted().map(name => ({ consumer: name, peer: dsh.name })))
   })
 
   it.each(['dependencies', 'optionalDependencies', 'peerDependencies'])(
diff --git a/scripts/release/publish.ts b/scripts/release/publish.ts
index 732ff46943..07da767d24 100644
--- a/scripts/release/publish.ts
+++ b/scripts/release/publish.ts
@@ -12,6 +12,8 @@
  * the same artifact safe.
  */
 
+import { execFileSync } from 'node:child_process'
+import { verifyCuaHelperTarball } from '../cua-helper/verify-tarball.ts'
 import { createHash } from 'node:crypto'
 import { readFileSync } from 'node:fs'
 import { join, resolve } from 'node:path'
@@ -184,6 +186,11 @@ export async function publishRelease(familyId: string, directory: string, distTa
     const tarball = join(directory, filename)
     return { tarball, ...packedIdentity(tarball) }
   })
+  for (const member of order) {
+    if (member.name !== '@deepseek-ai/dsh-experimental-cua-macos') continue
+    const commit = execFileSync('git', ['rev-parse', 'HEAD'], { encoding: 'utf8' }).trim()
+    await verifyCuaHelperTarball(member.tarball, { version: member.version, commit })
+  }
   if (distTag !== undefined) {
     for (const member of order) verifyDistTag(member, distTag)
   }
@@ -199,7 +206,8 @@ export async function publishRelease(familyId: string, directory: string, distTa
         throw new Error(
           `${name}@${version} is already published with different content`
           + `\n  registry: ${state.integrity}\n  packed:   ${local}`
-          + '\nBump the version, or investigate why the build is not reproducible.',
+          + '\nRetry a partial publication with its original release tarballs; rebuilding can change signed bytes.'
+          + '\nPublish a new version only when the package contents intentionally change.',
         )
       }
       console.log(`release publish: ${progress} ${name}@${version} already published, skipping`)
diff --git a/scripts/release/verify.ts b/scripts/release/verify.ts
index 5829087f97..454b3e6406 100644
--- a/scripts/release/verify.ts
+++ b/scripts/release/verify.ts
@@ -2,8 +2,8 @@
  * Verify a release family's version baseline, and — when publishing — that the
  * run comes from the family's tag and its members are publishable.
  *
- * Publication happens only from GitHub Actions, so the tag and publishability
- * checks are gates on the workflow, not advisory local warnings
+ * Publication happens only from GitHub Actions. Publishability is mandatory;
+ * tag validation may be explicitly bypassed with `--skip-tag-check`
  * ([rationale](../../.agents/notes/implemented/process/2026-08-10-npm-release-sequences.md)).
  */
 
@@ -73,7 +73,10 @@ function verifyTag(family: ReleaseFamily, members: readonly ReleaseMember[], ref
 /** Run the verification for the family named by `--family`. */
 function main(): void {
   const { values } = parseArgs({
-    options: { family: { type: 'string' } },
+    options: {
+      family: { type: 'string' },
+      'skip-tag-check': { type: 'boolean', default: false },
+    },
     allowPositionals: false,
   })
   if (values.family === undefined) throw new Error('usage: verify.ts --family <dsh|vendor>')
@@ -95,7 +98,11 @@ function main(): void {
   const publishing = process.env.RELEASE_PUBLISH === 'true'
   if (publishing) {
     verifyPublishable(members)
-    verifyTag(family, members, process.env.GITHUB_REF ?? '')
+    if (values['skip-tag-check']) {
+      console.warn(`release verify: WARNING tag validation explicitly skipped for ref ${process.env.GITHUB_REF || '(no ref)'}`)
+    } else {
+      verifyTag(family, members, process.env.GITHUB_REF ?? '')
+    }
   }
 
   const versions = [...new Set(members.map(member => member.version))]
diff --git a/scripts/tests/ci-master-platforms.spec.ts b/scripts/tests/ci-master-platforms.spec.ts
index c009f7fc6e..4940f60d7b 100644
--- a/scripts/tests/ci-master-platforms.spec.ts
+++ b/scripts/tests/ci-master-platforms.spec.ts
@@ -126,7 +126,10 @@ describe('master-only platform scheduling', () => {
   it('runs Wine once on hosted master CI and seeds its own apt cache', () => {
     const master = workflow('ci-master.yml')
     const wine = master.jobs.windows!
-    expect(wine).toMatchObject({ if: masterPush, 'runs-on': 'ubuntu-latest' })
+    expect(wine).toMatchObject({
+      if: "(github.event_name == 'push' && github.ref == 'refs/heads/master') || (github.event_name == 'workflow_dispatch' && inputs.suite == 'wine')",
+      'runs-on': 'ubuntu-latest',
+    })
     expect(wine.needs).toBeUndefined()
     expect(wine['continue-on-error']).toBeUndefined()
     expect(master.jobs['wine-apt-cache']).toBeUndefined()
diff --git a/scripts/tests/ci-release-selfhosted.spec.ts b/scripts/tests/ci-release-selfhosted.spec.ts
index 3e567da75a..3ac272f8c1 100644
--- a/scripts/tests/ci-release-selfhosted.spec.ts
+++ b/scripts/tests/ci-release-selfhosted.spec.ts
@@ -21,7 +21,16 @@ interface Workflow {
   on: Record<string, unknown>
   permissions: Record<string, string>
   concurrency?: Record<string, unknown>
-  jobs: Record<string, { name: string; 'runs-on': string; steps: Step[] }>
+  jobs: Record<string, {
+    name: string
+    'runs-on': string
+    steps: Step[]
+    uses?: string
+    if?: string
+    with?: Record<string, unknown>
+    needs?: string
+    permissions?: Record<string, string>
+  }>
 }
 
 function workflow(file: string): Workflow {
@@ -33,9 +42,12 @@ function workflow(file: string): Workflow {
 // Missing context properties use the Actions empty-string value.
 function evaluate(expression: string, context: Record<string, string | boolean>): unknown {
   const source = expression.trim().replace(/^\$\{\{|\}\}$/g, '')
-    .replace(/\b(?:github|vars|runner)(?:\.[a-zA-Z_][a-zA-Z_0-9]*)+/g,
+    .replace(/\b(?:github|vars|runner|inputs|needs)(?:\.[a-zA-Z_][a-zA-Z_0-9-]*)+/g,
       key => JSON.stringify(context[key] ?? ''))
-  return runInNewContext(source, { fromJSON: JSON.parse }, { timeout: 1000 })
+  return runInNewContext(source, {
+    fromJSON: JSON.parse, startsWith: (value: string, prefix: string) => value.startsWith(prefix),
+    cancelled: () => context['cancelled'] ?? false,
+  }, { timeout: 1000 })
 }
 
 function assertSharedPersistentStore(run: string | undefined): void {
@@ -163,8 +175,80 @@ for (const [file, jobIds] of [['release.yml', ['dependencies', 'pack']], ['relea
   })
 }
 
-it.each(['release-publish.yml', 'release-vendor-publish.yml'])('keeps %s manual and entirely hosted', (file) => {
-  const publish = workflow(file)
+it('keeps vendor publication manual and entirely hosted', () => {
+  const publish = workflow('release-vendor-publish.yml')
   expect(Object.keys(publish.on)).toEqual(['workflow_dispatch'])
   for (const job of Object.values(publish.jobs)) expect(job['runs-on']).toBe(hosted)
 })
+it('keeps DSH publication manual with hosted npm jobs and an explicit signed-helper producer', () => {
+  const publish = workflow('release-publish.yml')
+  expect(Object.keys(publish.on)).toEqual(['workflow_dispatch'])
+  for (const [name, job] of Object.entries(publish.jobs)) {
+    if (name === 'cua-helper') {
+      expect(job).toEqual({
+        if: "(startsWith(github.ref, 'refs/tags/dsh-v') || inputs.skip-tag-check) && inputs.cua_run_id == '' && inputs.cua_run_attempt == ''",
+        uses: './.github/workflows/cua-helper-package.yml',
+        with: { source_ref: '${{ github.ref }}', preset: 'production' },
+      })
+    } else expect(job['runs-on']).toBe(hosted)
+  }
+})
+it.each([
+  ['refs/tags/dsh-v0.2.1-rc.4', false, '', '', true],
+  ['refs/heads/master', false, '', '', false],
+  ['refs/heads/master', true, '', '', true],
+  ['refs/tags/dsh-v0.2.1-rc.4', false, '123', '', false],
+  ['refs/heads/master', true, '123', '2', false],
+  ['refs/tags/dsh-v0.2.1-rc.4', false, '', '2', false],
+] as const)('selects the helper producer for ref %s, skip=%s, run=%s, attempt=%s', (ref, skip, runId, attempt, expected) => {
+  const expression = workflow('release-publish.yml').jobs['cua-helper']!.if!
+  expect(evaluate(expression, { 'github.ref': ref, 'inputs.skip-tag-check': skip,
+    'inputs.cua_run_id': runId, 'inputs.cua_run_attempt': attempt })).toBe(expected)
+})
+
+it.each([
+  ['success', '', '', false, true],
+  ['failure', '', '', false, false],
+  ['failure', '123', '', false, false],
+  ['cancelled', '', '', false, false],
+  ['skipped', '', '', false, false],
+  ['skipped', '123', '', false, true],
+  ['skipped', '123', '2', false, true],
+  ['skipped', '', '2', false, true],
+  ['skipped', '123', '2', true, false],
+] as const)('gates npm packing with helper=%s, run=%s, attempt=%s, cancelled=%s', (result, runId, attempt, cancelled, expected) => {
+  const pack = workflow('release-publish.yml').jobs['pack']!
+  expect(pack.needs).toBe('cua-helper')
+  expect(evaluate(pack.if!, { 'needs.cua-helper.result': result,
+    'inputs.cua_run_id': runId, 'inputs.cua_run_attempt': attempt, cancelled })).toBe(expected)
+})
+
+it('validates retained attempts before downloading exactly one artifact with read-only Actions access', () => {
+  const publish = workflow('release-publish.yml')
+  expect(publish.permissions).toEqual({ contents: 'read' })
+  const pack = publish.jobs['pack']!
+  expect(pack.permissions).toEqual({ contents: 'read', actions: 'read' })
+  const select = pack.steps.find(step => step.name === 'Select retained CUA helper')!
+  const retained = pack.steps.find(step => step.name === 'Download retained CUA helper')!
+  const fresh = pack.steps.find(step => step.name === 'Download freshly built CUA helper')!
+  expect(select.run).toBe('pnpm exec tsx scripts/cua-helper/select-artifact.ts')
+  expect(pack.steps.indexOf(select)).toBeLessThan(pack.steps.indexOf(retained))
+  expect(retained).toMatchObject({ uses: 'actions/download-artifact@v8.0.1', with: {
+    'artifact-ids': '${{ steps.retained-cua.outputs.artifact-id }}', 'run-id': '${{ inputs.cua_run_id }}',
+    'github-token': '${{ github.token }}', path: 'dist/cua-helper',
+  } })
+  expect(retained.with?.name).toBeUndefined()
+  expect(fresh.with).toEqual({ name: '${{ needs.cua-helper.outputs.artifact }}', path: 'dist/cua-helper' })
+  for (const [runId, attempt, reuse] of [['', '', false], ['123', '', true], ['123', '2', true], ['', '2', true]] as const) {
+    const context = { 'inputs.cua_run_id': runId, 'inputs.cua_run_attempt': attempt }
+    expect(evaluate(select.if!, context)).toBe(reuse)
+    expect(evaluate(retained.if!, context)).toBe(reuse)
+    expect(evaluate(fresh.if!, context)).toBe(!reuse)
+  }
+  const stage = pack.steps.find(step => step.name === 'Stage verified native helper applications')!
+  expect(stage.if).toBeUndefined()
+  expect(stage.run).toContain('scripts/cua-helper/stage.ts --from dist/cua-helper/extracted')
+  expect(pack.steps.indexOf(stage)).toBeGreaterThan(pack.steps.indexOf(retained))
+  expect(pack.steps.indexOf(stage)).toBeGreaterThan(pack.steps.indexOf(fresh))
+  expect(pack.steps.indexOf(stage)).toBeLessThan(pack.steps.findIndex(step => step.name === 'Pack release tarballs'))
+})
diff --git a/scripts/type-equiv.manifest.json b/scripts/type-equiv.manifest.json
index bdc05ac90e..98c863af95 100644
--- a/scripts/type-equiv.manifest.json
+++ b/scripts/type-equiv.manifest.json
@@ -1,6 +1,16 @@
 {
   "comment": "Maps each primary ` ```ts type-equiv ` or ` ```ts public-api ` block (by doc + declared symbol + projection) to the source declaration and original JSDoc it must match. Paired `.zh.md` blocks are byte-identical derivatives checked through their unsuffixed sibling and have no duplicate entry. Omit projection for the complete declaration; use public-api with a ` ```ts public-api ` block for a body-stripped public class declaration. verify-type-equiv.ts enforces a 1:1 correspondence between primary blocks and entries. Add an entry when you add a primary source-equivalence block; remove it when you remove the block.",
   "entries": [
+    {
+      "doc": "docs/subsystems/session.md",
+      "symbol": "SessionLogUploadRequest",
+      "source": "packages/session/session-log-deepseek/src/types.ts"
+    },
+    {
+      "doc": "docs/subsystems/session.md",
+      "symbol": "SessionLogUploadExclusion",
+      "source": "packages/session/session-log-deepseek/src/types.ts"
+    },
     {
       "doc": "docs/subsystems/compaction.md",
       "symbol": "ImageOffloadTarget",
@@ -121,6 +131,16 @@
       "symbol": "RequestMessage",
       "source": "packages/llm/llm/src/types.ts"
     },
+    {
+      "doc": "docs/subsystems/llm-streaming.md",
+      "symbol": "LlmRequestPurposeMap",
+      "source": "packages/llm/llm/src/types.ts"
+    },
+    {
+      "doc": "docs/subsystems/llm-streaming.md",
+      "symbol": "LlmRequestPurpose",
+      "source": "packages/llm/llm/src/types.ts"
+    },
     {
       "doc": "docs/subsystems/llm-streaming.md",
       "symbol": "GenerateOptions",
@@ -2861,6 +2881,21 @@
       "doc": "docs/subsystems/forge.md",
       "symbol": "ForgeLocalChanges",
       "source": "packages/experimental/client-ui-forge/src/types.ts"
+    },
+    {
+      "doc": "docs/subsystems/forge.md",
+      "symbol": "ForgeLineComment",
+      "source": "packages/experimental/forge/src/types.ts"
+    },
+    {
+      "doc": "docs/subsystems/forge.md",
+      "symbol": "ForgeReviewRequest",
+      "source": "packages/experimental/forge/src/types.ts"
+    },
+    {
+      "doc": "docs/subsystems/forge.md",
+      "symbol": "ForgeReviewResult",
+      "source": "packages/experimental/forge/src/types.ts"
     }
   ]
 }
diff --git a/scripts/verify-npm-install-layout.spec.ts b/scripts/verify-npm-install-layout.spec.ts
index d8e4319bba..4e786e5298 100644
--- a/scripts/verify-npm-install-layout.spec.ts
+++ b/scripts/verify-npm-install-layout.spec.ts
@@ -117,9 +117,15 @@ describe('npm install layout verifier', () => {
 })
 
 describe('resolution work budget', () => {
-  it('accepts the measured dual-release graph', () => {
-    expect(assertResolutionWorkBudget({ dshPackagesPerVersion: 320, checkedDshEdges: 2836 }))
-      .toBe(907_520)
+  it.each([
+    [277, 2524, 699_148],
+    [316, 2780, 878_480],
+    [316, 2786, 880_376],
+    [317, 2786, 883_162],
+    [320, 2836, 907_520],
+  ])('accepts the measured dual-release graph with %i packages and %i edges', (packages, edges, units) => {
+    expect(assertResolutionWorkBudget({ dshPackagesPerVersion: packages, checkedDshEdges: edges }))
+      .toBe(units)
   })
 
   it('accepts a graph exactly at the budget and rejects one internal edge above it', () => {
diff --git a/scripts/verify-package-readme-model-experience.ts b/scripts/verify-package-readme-model-experience.ts
index 63f0660ee0..599409cdb6 100644
--- a/scripts/verify-package-readme-model-experience.ts
+++ b/scripts/verify-package-readme-model-experience.ts
@@ -48,6 +48,8 @@ const NO_MODEL_EXPERIENCE_SECTION: Readonly<Record<string, string>> = {
  * blocks. A package moves on or off this list with its context behavior.
  */
 const SENTENCE_MODEL_EXPERIENCE: Readonly<Record<string, SentenceContract>> = {
+  'packages/client/ui-context-menu': { kind: 'none', reason: 'Client menu presentation and contributed callbacks add no model input.' },
+  'packages/client/ui-file-actions': { kind: 'none', reason: 'Explicit user file saves and clipboard operations add no model input.' },
   'packages/client/ui-entry-customization': { kind: 'none', reason: 'Controls browser launchers and prepares a reviewable Creator draft without submitting model input.' },
   'packages/experimental/client-ui-cot-translation': { kind: 'indirect', reason: 'The translator owns optional paid queries; normal Session activation delegates startup context to the preset.' },
   'packages/experimental/cot-translation-bundle': { kind: 'indirect', reason: 'The GUI consumer delegates paid query prompts to the translator and normal activation context to the Session preset.' },
@@ -56,6 +58,7 @@ const SENTENCE_MODEL_EXPERIENCE: Readonly<Record<string, SentenceContract>> = {
   'packages/experimental/api-speech-to-text': { kind: 'none', reason: 'Transports audio and preparation state; ordinary user submission owns model-visible text.' },
   'packages/experimental/speech-to-text-sensevoice': { kind: 'none', reason: 'Local recognition returns transient text without modifying model context.' },
   'packages/experimental/client-ui-voice-input': { kind: 'none', reason: 'Inserts reviewable text into the unsent draft without submitting to the Agent.' },
+  'packages/experimental/liveshare': { kind: 'indirect', reason: 'The host drives viewer prompts into the shared Session, so model requests follow the viewer input the host forwards.' },
   'packages/experimental/plugin-market-bundle': { kind: 'indirect', reason: 'Mounts the pluginMarket service, which lets the Creator preset register the plugin_market tool documented in packages/boot/plugin-market.' },
   'packages/experimental/client-ui-action-cards': { kind: 'indirect', reason: 'Card actions go to the Host card service, which owns the logged tool, decisions and status notice.' },
   'packages/experimental/client-ui-creation-recommendations': { kind: 'indirect', reason: 'The page card body starts a Creator through the Host page kind; the Host owns its logged task.' },
diff --git a/scripts/verify-repository-references.spec.ts b/scripts/verify-repository-references.spec.ts
index cb259bdc07..2c53c1d526 100644
--- a/scripts/verify-repository-references.spec.ts
+++ b/scripts/verify-repository-references.spec.ts
@@ -1,10 +1,10 @@
 import { execFileSync } from 'node:child_process'
 import { createHash } from 'node:crypto'
-import { mkdirSync, mkdtempSync, rmSync, symlinkSync, unlinkSync, writeFileSync } from 'node:fs'
+import { mkdirSync, mkdtempSync, readFileSync, rmSync, symlinkSync, unlinkSync, writeFileSync } from 'node:fs'
 import { tmpdir } from 'node:os'
 import { dirname, join } from 'node:path'
 import { describe, expect, it, type TestContext } from 'vitest'
-import { findRepositoryReferences, scanRepositoryReferences, uniquePrefixMatch } from './verify-repository-references.ts'
+import { findRepositoryReferences, repositoryCommits, scanRepositoryReferences, uniquePrefixMatch } from './verify-repository-references.ts'
 
 const organizationUrl = `https://${['github.com', ['deepseek', 'harness'].join('-')].join('/')}`
 
@@ -51,6 +51,7 @@ function collidingCommitBodies(tree: string, length: number): [string, string] {
   for (let index = 0; ; index += 1) {
     const body = `tree ${tree}\nauthor T <t@example.invalid> 0 +0000\ncommitter T <t@example.invalid> 0 +0000\n\ncollision ${String(index)}\n`
     const prefix = createHash(algorithm).update(`commit ${String(Buffer.byteLength(body))}\0${body}`).digest('hex').slice(0, length)
+    if (!/[a-f]/.test(prefix)) continue
     const previous = seen.get(prefix)
     if (previous !== undefined) return [previous, body]
     seen.set(prefix, body)
@@ -72,6 +73,75 @@ describe('unique object-name prefix search', () => {
 })
 
 describe('maintained repository reference policy', () => {
+  const numericCommit = String(6_344_383)
+
+  it.each([
+    ['uv.lock', `artifact = { size = ${numericCommit} }`],
+    ['python/sdk/uv.lock', `sdist.size = ${numericCommit}`],
+    ['fixture.json', `{"context_length": ${numericCommit}}`],
+    ['package.json', `{"version": "1.0.${numericCommit}"}`],
+    ['config.toml', `rev = "${numericCommit}"`],
+    ['notes.md', `commit ${numericCommit}\nhttps://example.invalid/commit/${numericCommit}`],
+    ['source.ts', `// commit ${numericCommit}`],
+  ])('accepts decimal-only tokens in %s even when they name a commit', (file, source) => {
+    expect(findRepositoryReferences(file, source, new Set([numericCommit]))).toEqual([])
+  })
+
+  it.each([7, 12, 40])('accepts a decimal-only %i-character token beside a hexadecimal commit', (length) => {
+    const decimal = '1'.repeat(length)
+    const hexadecimal = `${'1'.repeat(length - 1)}a`
+    expect(findRepositoryReferences('source.md', `${decimal} ${hexadecimal}`, new Set([decimal, hexadecimal]))).toEqual([
+      { file: 'source.md', line: 1, kind: 'commit-hash' },
+    ])
+    expect(findRepositoryReferences('source.md', decimal, new Set([decimal]))).toEqual([])
+  })
+
+  it.each([
+    ['python/sdk/uv.lock', 'size = "HASH"', 1],
+    ['fixture.json', '{"revision": "HASH"}', 1],
+    ['notes.md', 'release\ncommit HASH', 2],
+    ['source.ts', '// commit HASH', 1],
+  ] as const)('rejects commit tokens containing a hex letter in %s', (file, template, line) => {
+    const hash = `${numericCommit}a`
+    expect(findRepositoryReferences(file, template.replace('HASH', hash), new Set([hash]))).toEqual([
+      { file, line, kind: 'commit-hash' },
+    ])
+  })
+
+  it('accepts byte counts in the real lockfile and still rejects references on added lines', () => {
+    const file = 'python/sdk/uv.lock'
+    const source = readFileSync(join(import.meta.dirname, '..', file), 'utf8').trimEnd()
+    const sizes = new Set([...source.matchAll(/\bsize\s*=\s*(\d+)/g)].map(match => match[1] ?? ''))
+    expect(sizes.size).toBeGreaterThan(0)
+    expect(sizes).not.toContain('')
+    expect(findRepositoryReferences(file, source, sizes)).toEqual([])
+    const hash = `${numericCommit}a`
+    expect(findRepositoryReferences(file, `${source}\n# commit ${hash}\n# ${organizationUrl}`, new Set([...sizes, hash]))).toEqual([
+      { file, line: source.split('\n').length + 1, kind: 'commit-hash' },
+      { file, line: source.split('\n').length + 2, kind: 'organization-url' },
+    ])
+  })
+
+  it('excludes a real numeric commit prefix from both candidate resolution and file findings', (test) => {
+    const fixture = repository(test)
+    const algorithm = fixture.tree.length === 64 ? 'sha256' : 'sha1'
+    for (let index = 0; ; index += 1) {
+      const body = `tree ${fixture.tree}\nauthor T <t@example.invalid> 0 +0000\ncommitter T <t@example.invalid> 0 +0000\n\nnumeric ${String(index)}\n`
+      const commit = createHash(algorithm).update(`commit ${String(Buffer.byteLength(body))}\0${body}`).digest('hex')
+      if (!/^\d{7}/.test(commit) || !/[a-f]/.test(commit.slice(0, 40))) continue
+      fixture.git(['hash-object', '-t', 'commit', '-w', '--stdin'], body)
+      const decimal = commit.slice(0, 7)
+      const hexadecimal = commit.slice(0, Math.max(8, commit.search(/[a-f]/) + 1))
+      const source = `commit ${decimal}\ncommit ${hexadecimal}`
+      expect(repositoryCommits(fixture.root, [source])).toEqual(new Set([hexadecimal]))
+      fixture.write('references.md', source)
+      expect(scanRepositoryReferences(fixture.root)).toEqual([
+        { file: 'references.md', line: 2, kind: 'commit-hash' },
+      ])
+      return
+    }
+  })
+
   it('permits only the independent kit repository and its source URLs', () => {
     for (const suffix of ['', '.git', '/tree/main/packages/entry']) {
       expect(findRepositoryReferences('package.json', `${organizationUrl}/libreoffice-kit${suffix}`, new Set())).toEqual([])
@@ -84,9 +154,10 @@ describe('maintained repository reference policy', () => {
   it('rejects complete and abbreviated commit identifiers in tracked, staged, and new files', (test) => {
     const fixture = repository(test)
     fixture.write('tracked.md', `release\n${fixture.commit}\n${fixture.commit.toUpperCase()}\n`)
-    fixture.write('staged.md', fixture.commit.slice(0, 7))
+    const firstLetterEnd = fixture.commit.search(/[a-f]/) + 1
+    fixture.write('staged.md', fixture.commit.slice(0, Math.max(7, firstLetterEnd)))
     fixture.git(['add', 'staged.md'])
-    fixture.write('new.md', `\0${fixture.commit.slice(0, 12)}`)
+    fixture.write('new.md', `\0${fixture.commit.slice(0, Math.max(12, firstLetterEnd))}`)
 
     expect(scanRepositoryReferences(fixture.root)).toEqual(expect.arrayContaining([
       { file: 'tracked.md', line: 2, kind: 'commit-hash' },
diff --git a/scripts/verify-repository-references.ts b/scripts/verify-repository-references.ts
index 8e7dae883c..2781c5e0a1 100644
--- a/scripts/verify-repository-references.ts
+++ b/scripts/verify-repository-references.ts
@@ -11,7 +11,8 @@ const organization = ['deepseek', 'harness'].join('-')
 const organizationUrl = new RegExp(`\\bgithub\\.com/${organization}(?![a-z0-9-])`)
 // The independent kit repository owns the engine source and documentation.
 const kitRepositoryUrl = new RegExp(`\\bgithub\\.com/${organization}/libreoffice-kit(?:\\.git)?(?=/|[^a-zA-Z0-9_.-]|$)`, 'g')
-const commitCandidate = /(?<![a-z0-9])[\da-f]{7,40}(?![a-z0-9])/gi
+// Decimal-only tokens collide with sizes, counts, and version components; see docs/AGENTS.md#repository-references.
+const commitCandidate = /(?<![a-z0-9])(?=[\da-f]{0,39}[a-f])[\da-f]{7,40}(?![a-z0-9])/gi
 const excludedPrefixes = ['vendor/', '.agents/notes/archived/']
 const gitOutputLimit = 64 * 1024 * 1024
 // One 41-byte line per object; 1.2 million objects produce about 49 MiB.
@@ -37,6 +38,7 @@ function isMaintained(file: string): boolean {
  * @param source - File text or a symlink's stored target.
  * @param commits - Lowercase, unambiguous full or abbreviated commit identifiers.
  * @returns One finding per line and reference kind; digests and other Git object types are accepted.
+ * Decimal-only tokens are ignored, including actual commit identifiers.
  */
 export function findRepositoryReferences(
   file: string,
@@ -107,7 +109,7 @@ export function uniquePrefixMatch(objects: readonly string[], prefix: string): s
  * Resolve commit-identifier candidates in maintained sources against the local object database.
  * @param repoRoot - Working tree whose Git objects are inspected.
  * @param sources - File texts or symlink targets to extract candidates from.
- * @returns Lowercase candidates that name exactly one available object, which is a commit.
+ * @returns Lowercase candidates containing a hexadecimal letter that name exactly one available object, which is a commit.
  */
 export function repositoryCommits(repoRoot: string, sources: Iterable<string>): Set<string> {
   const candidates = [...new Set([...sources].flatMap(source =>
@@ -146,7 +148,7 @@ const invokedPath = process.argv[1]
 if (invokedPath !== undefined && import.meta.url === pathToFileURL(resolve(invokedPath)).href) {
   const references = scanRepositoryReferences(root)
   if (references.length === 0) {
-    console.log('verify-repository-references: maintained files contain no repository commit identifiers or disallowed organization URLs.')
+    console.log('verify-repository-references: maintained files contain no prohibited references (decimal-only tokens are ignored).')
   } else {
     console.error('verify-repository-references: use release tags or maintained repository links:')
     for (const { file, line, kind } of references) console.error(`  ${file}:${String(line)} ${kind}`)
diff --git a/scripts/windows-build-workspace.spec.ts b/scripts/windows-build-workspace.spec.ts
deleted file mode 100644
index a47004089b..0000000000
--- a/scripts/windows-build-workspace.spec.ts
+++ /dev/null
@@ -1,66 +0,0 @@
-import { execFileSync } from 'node:child_process'
-import { existsSync, mkdirSync, mkdtempSync, readFileSync, realpathSync, rmSync, symlinkSync, writeFileSync } from 'node:fs'
-import { tmpdir } from 'node:os'
-import { join, resolve } from 'node:path'
-import { expect, it } from 'vitest'
-import { prepareWindowsBuildWorkspace, removeWindowsBuildWorkspace } from '../apps/desktop/scripts/windows-build-workspace.mjs'
-
-it('clones the exact clean commit and removes only its run-owned checkout', () => {
-  const root = realpathSync(mkdtempSync(join(tmpdir(), 'package-workspace-')))
-  try {
-    const sourceDirectory = join(root, 'original')
-    mkdirSync(sourceDirectory)
-    const git = (...args: string[]) => execFileSync('git', args, { cwd: sourceDirectory, encoding: 'utf8', stdio: 'pipe' }).trim()
-    git('init')
-    writeFileSync(join(sourceDirectory, 'source.txt'), 'selected source')
-    writeFileSync(join(sourceDirectory, '.gitignore'), 'private.env\n')
-    git('add', '.')
-    git('-c', 'user.name=Fixture', '-c', 'user.email=fixture@example.invalid', 'commit', '-m', 'fixture')
-    writeFileSync(join(sourceDirectory, 'private.env'), 'ignored fixture')
-    const options = { sourceDirectory, buildRoot: join(root, 'builds'), runId: '123', runAttempt: '1', sourceSha: git('rev-parse', 'HEAD') }
-    expect(() => prepareWindowsBuildWorkspace({ ...options, buildRoot: sourceDirectory })).toThrow('outside existing Git')
-    expect(() => prepareWindowsBuildWorkspace({ ...options, buildRoot: 'relative' })).toThrow('absolute')
-    expect(() => prepareWindowsBuildWorkspace({ ...options, runId: '../other' })).toThrow('identity')
-    expect(() => prepareWindowsBuildWorkspace({ ...options, sourceSha: '0'.repeat(40) })).toThrow('match')
-    writeFileSync(join(sourceDirectory, 'source.txt'), 'dirty')
-    expect(() => prepareWindowsBuildWorkspace(options)).toThrow('clean')
-    writeFileSync(join(sourceDirectory, 'source.txt'), 'selected source')
-    const output = join(root, 'actions-output')
-    execFileSync(process.execPath, [resolve(import.meta.dirname, '../apps/desktop/scripts/windows-build-workspace.mjs')], {
-      cwd: sourceDirectory,
-      env: {
-        ...process.env,
-        GITHUB_WORKSPACE: sourceDirectory,
-        PACKAGE_BUILD_ROOT: options.buildRoot,
-        GITHUB_RUN_ID: options.runId,
-        GITHUB_RUN_ATTEMPT: options.runAttempt,
-        PACKAGE_SOURCE_SHA: options.sourceSha,
-        GITHUB_OUTPUT: output,
-      },
-      stdio: 'pipe',
-    })
-    const directory = join(options.buildRoot, 'windows-package-123-1', 'source')
-    const temporaryDirectory = join(options.buildRoot, 'windows-package-123-1', 'temp')
-    expect(readFileSync(output, 'utf8')).toBe(`directory=${directory}\ntemporaryDirectory=${temporaryDirectory}\n`)
-    writeFileSync(join(temporaryDirectory, 'temporary.txt'), 'owned temporary data')
-    expect(readFileSync(join(directory, 'source.txt'), 'utf8')).toBe('selected source')
-    expect(existsSync(join(directory, 'private.env'))).toBe(false)
-    expect(() => prepareWindowsBuildWorkspace(options)).toThrow()
-    expect(() => { removeWindowsBuildWorkspace({ ...options, sourceSha: '0'.repeat(40) }) }).toThrow('ownership')
-    expect(existsSync(directory)).toBe(true)
-    const external = join(root, 'external')
-    mkdirSync(external)
-    writeFileSync(join(external, 'keep.txt'), 'keep')
-    symlinkSync(external, join(directory, 'node_modules'), process.platform === 'win32' ? 'junction' : 'dir')
-    removeWindowsBuildWorkspace(options)
-    expect(existsSync(directory)).toBe(false)
-    expect(existsSync(temporaryDirectory)).toBe(false)
-    expect(readFileSync(join(external, 'keep.txt'), 'utf8')).toBe('keep')
-    expect(readFileSync(join(sourceDirectory, 'source.txt'), 'utf8')).toBe('selected source')
-    const linked = join(root, 'linked')
-    symlinkSync(external, linked, process.platform === 'win32' ? 'junction' : 'dir')
-    expect(() => prepareWindowsBuildWorkspace({ ...options, buildRoot: join(linked, 'builds') })).toThrow('links')
-  } finally {
-    rmSync(root, { recursive: true, force: true })
-  }
-})
diff --git a/scripts/windows-package-workflow.spec.ts b/scripts/windows-package-workflow.spec.ts
index c481129739..6338bbf991 100644
--- a/scripts/windows-package-workflow.spec.ts
+++ b/scripts/windows-package-workflow.spec.ts
@@ -68,7 +68,7 @@ it('routes manual packaging to the dedicated runner with explicit preset and sig
   expect(workflow.concurrency).toEqual({ group: 'windows-desktop-package', 'cancel-in-progress': false })
   expect(workflow.permissions).toEqual({ contents: 'read' })
   expect(Object.keys(workflow.on.workflow_dispatch!.inputs).sort()).toEqual([
-    'build_root', 'build_version', 'cache_namespace', 'compression_level', 'preset', 'signing', 'source_ref', 'test_release_id', 'update_channel', 'version_mode',
+    'build_version', 'cache_namespace', 'compression_level', 'preset', 'signing', 'source_ref', 'test_release_id', 'update_channel', 'version_mode',
   ])
   expect(workflow.on.workflow_dispatch!.inputs.signing!.default).toBe('signed')
   expect(workflow.on.workflow_dispatch!.inputs.compression_level).toMatchObject({ type: 'choice', options: ['3', '7'], default: '3', required: true })
@@ -108,7 +108,7 @@ it('retains failure diagnostics and uploads only the selected successful install
   expect(uploads).toHaveLength(3)
   expect(uploads[0]!.if).toBe("always() && steps.checkout.outcome == 'success'")
   expect(uploads[0]!.with).toMatchObject({
-    path: '${{ steps.build_workspace.outputs.directory || github.workspace }}/apps/desktop/.desktop-build/packaging-runs/',
+    path: '${{ github.workspace }}/apps/desktop/.desktop-build/packaging-runs/',
     'include-hidden-files': true,
   })
   for (const mode of ['unsigned', 'signed']) {
@@ -117,51 +117,6 @@ it('retains failure diagnostics and uploads only the selected successful install
   }
 })
 
-it('routes all packaging consumers to the selected workspace and removes it only after successful uploads', () => {
-  expect(workflow.on.workflow_dispatch!.inputs.build_root).toMatchObject({ type: 'string', default: '', required: false })
-  expect(job.env.PACKAGE_BUILD_ROOT).toBe('${{ inputs.build_root }}')
-  const selected = job.steps.find(step => step.id === 'build_workspace')!
-  expect(selected.name).toBe('Select packaging workspace')
-  expect(selected.env).toEqual({ PACKAGE_SOURCE_SHA: '${{ steps.checkout.outputs.commit }}' })
-  expect(selected['working-directory']).toBeUndefined()
-  expect(selected.run).toContain('if (!$env:PACKAGE_BUILD_ROOT)')
-  expect(selected.run).toContain('"directory=$env:GITHUB_WORKSPACE" >> $env:GITHUB_OUTPUT')
-  expect(selected.run).toContain('} else {')
-  expect(selected.run).toContain('node "$env:PACKAGE_CI_HELPERS/windows-build-workspace.mjs"')
-  expect(selected.run).toContain('exit $LASTEXITCODE')
-  const index = job.steps.indexOf(selected)
-  expect(index).toBeGreaterThan(job.steps.findIndex(step => step.uses?.startsWith('actions/setup-node@')))
-  expect(index).toBeLessThan(job.steps.findIndex(step => step.name === 'Configure persistent pnpm store'))
-  const consumers = [
-    'Install locked dependencies',
-    'Validate preset and resolve build version',
-    'Check packaging configuration and toolchain',
-    'Build installer and verify packaged runtime',
-    'Retain complete package outside the checkout',
-  ]
-  for (const name of consumers) {
-    const step = job.steps.find(entry => entry.name === name)!
-    expect(step['working-directory']).toBe('${{ steps.build_workspace.outputs.directory }}')
-    expect(job.steps.indexOf(step)).toBeGreaterThan(index)
-  }
-  expect(job.steps.filter(step => step['working-directory'] === '${{ steps.build_workspace.outputs.directory }}'))
-    .toHaveLength(consumers.length)
-  const store = job.steps.find(step => step.name === 'Configure persistent pnpm store')!
-  expect(store.run).toContain('[IO.Path]::GetPathRoot($env:GITHUB_WORKSPACE)')
-  expect(store['working-directory']).toBeUndefined()
-  const cleanup = job.steps.at(-1)!
-  expect(cleanup).toMatchObject({
-    name: 'Remove isolated packaging workspace',
-    if: "success() && inputs.build_root != ''",
-    env: { PACKAGE_SOURCE_SHA: '${{ steps.checkout.outputs.commit }}' },
-    run: 'node "$env:PACKAGE_CI_HELPERS/windows-build-workspace.mjs" --remove',
-  })
-  expect(cleanup['working-directory']).toBeUndefined()
-  for (const upload of job.steps.filter(step => step.uses?.startsWith('actions/upload-artifact@'))) {
-    expect(job.steps.indexOf(upload)).toBeLessThan(job.steps.indexOf(cleanup))
-  }
-})
-
 it('normalizes priority in the dependency and packaging shells before launching their children', () => {
   const command = '& "$env:PACKAGE_CI_HELPERS/windows-packaging-priority.ps1" -BestEffort'
   expect(job.steps.find(entry => entry.name === 'Validate selected source and adapter support')!.run)
@@ -172,33 +127,6 @@ it('normalizes priority in the dependency and packaging shells before launching
   }
 })
 
-it('scopes the optional temporary directory to installer building without changing Actions or later steps', () => {
-  const build = job.steps.find(step => step.name === 'Build installer and verify packaged runtime')!
-  expect(build.env?.PACKAGE_BUILD_TEMP).toBe('${{ steps.build_workspace.outputs.temporaryDirectory }}')
-  expect(build.run).toContain([
-    'if ($env:PACKAGE_BUILD_TEMP) {',
-    '  $env:TEMP = $env:PACKAGE_BUILD_TEMP',
-    '  $env:TMP = $env:PACKAGE_BUILD_TEMP',
-    '}',
-  ].join('\n'))
-  expect(build.run!.indexOf('if ($env:PACKAGE_BUILD_TEMP)')).toBeLessThan(build.run!.indexOf('$packageArgs ='))
-  expect(build.run).not.toContain('GITHUB_ENV')
-  expect(build.run).not.toContain('RUNNER_TEMP')
-  expect(job.env).not.toHaveProperty('TEMP')
-  expect(job.env).not.toHaveProperty('TMP')
-  expect(job.env).not.toHaveProperty('PACKAGE_BUILD_TEMP')
-  for (const step of job.steps.filter(step => step !== build)) {
-    expect(step.env ?? {}).not.toHaveProperty('PACKAGE_BUILD_TEMP')
-    expect(step.env ?? {}).not.toHaveProperty('TEMP')
-    expect(step.env ?? {}).not.toHaveProperty('TMP')
-    expect(step.run ?? '').not.toMatch(/\$env:(?:TEMP|TMP)\s*=/u)
-  }
-  const selected = job.steps.find(step => step.id === 'build_workspace')!
-  const defaultBranch = selected.run!.split('} else {')[0]!
-  expect(defaultBranch).toContain('"directory=$env:GITHUB_WORKSPACE" >> $env:GITHUB_OUTPUT')
-  expect(defaultBranch).not.toContain('temporaryDirectory')
-})
-
 it.skipIf(process.platform !== 'win32')('keeps the dependency store stable across run-specific pnpm homes', () => {
   const directory = mkdtempSync(resolve(tmpdir(), 'windows-package-store-'))
   try {
@@ -251,11 +179,9 @@ it('pins environment helpers to the workflow commit before selecting product sou
   expect(job.steps.indexOf(helper)).toBeLessThan(job.steps.indexOf(stage))
   expect(job.steps.indexOf(stage)).toBeLessThan(job.steps.indexOf(source))
   expect(stage.run).toContain('RUNNER_TEMP')
-  expect(stage.run).toContain('windows-build-workspace.mjs')
   expect(stage.run).toContain('windows-packaging-priority.ps1')
   for (const step of job.steps.filter(step => step.name !== 'Stage workflow helpers')) {
     expect(step.run ?? '').not.toContain('./apps/desktop/scripts/windows-packaging-priority.ps1')
-    expect(step.run ?? '').not.toContain('node apps/desktop/scripts/windows-build-workspace.mjs')
   }
 })
 
@@ -267,7 +193,7 @@ it.skipIf(process.platform !== 'win32')('stages helpers that remain usable when
     const temporary = resolve(directory, 'temporary')
     mkdirSync(scripts, { recursive: true })
     mkdirSync(temporary)
-    for (const name of ['windows-packaging-priority.ps1', 'windows-build-workspace.mjs']) {
+    for (const name of ['windows-packaging-priority.ps1']) {
       writeFileSync(resolve(scripts, name), readFileSync(resolve(root, 'apps/desktop/scripts', name)))
     }
     const stage = resolve(directory, 'stage.ps1')
@@ -278,7 +204,6 @@ it.skipIf(process.platform !== 'win32')('stages helpers that remain usable when
     const helper = resolve(temporary, 'packaging-helpers-123-1/windows-packaging-priority.ps1')
     expect(execFileSync('pwsh', ['-NoProfile', '-File', helper, '-InspectOnly'], { cwd: source, stdio: 'pipe' }).toString())
       .toContain('packaging-process-priority')
-    expect(existsSync(resolve(temporary, 'packaging-helpers-123-1/windows-build-workspace.mjs'))).toBe(true)
     expect(() => execFileSync('pwsh', ['-NoProfile', '-File', stage], {
       cwd: source, env: { ...env, GITHUB_RUN_ATTEMPT: '2' }, stdio: 'pipe',
     })).toThrow()
diff --git a/scripts/wine-windows-gates.sh b/scripts/wine-windows-gates.sh
index edd01072b5..5a8181928f 100755
--- a/scripts/wine-windows-gates.sh
+++ b/scripts/wine-windows-gates.sh
@@ -245,10 +245,9 @@ grep -q '^smoke: win32 x64' "$scratch/logs/smoke.log" || { echo 'wine-windows-ga
 # The build mirrors the root build:lib:host and build:lib:client scripts:
 # generate metadata, compile the Host package projects, type-check the Host
 # aggregate program, bundle the Host face, bundle apps/desktop from the Host
-# lib/ outputs, then compile and bundle the Client face. The Host compile is two
-# invocations because that is how the supported build splits it; a single
-# `tsc -b` holds the reference graph and the aggregate program in one process
-# and exceeds the heap the Host face is budgeted.
+# lib/ outputs, then compile and bundle the Client face. Each face compiles
+# package references separately from its aggregate program, matching the
+# supported build and releasing the reference graph before aggregate checking.
 # Both statuses are captured so one failure cannot hide the other's result.
 build_gate() {
   wine_node "$scratch/logs/host-typert.log" --import tsx/esm scripts/generate-typert.ts || return $?
@@ -256,7 +255,8 @@ build_gate() {
   wine_node "$scratch/logs/host-tsc.log" --max-old-space-size=8192 "$tsc_js" -p tsconfig.host.json --pretty false || return $?
   wine_node "$scratch/logs/host-tsdown.log" "$tsdown_js" --env.DSH_BUILD_FACE host || return $?
   (cd apps/desktop && wine_node "$scratch/logs/desktop-tsdown.log" "../../$tsdown_js") || return $?
-  wine_node "$scratch/logs/client-tsc.log" "$tsc_js" -b tsconfig.client.json --pretty false || return $?
+  wine_node "$scratch/logs/client-references.log" --import tsx/esm scripts/compile-referenced-projects.ts client || return $?
+  wine_node "$scratch/logs/client-tsc.log" --max-old-space-size=8192 "$tsc_js" -p tsconfig.client.json --pretty false || return $?
   wine_node "$scratch/logs/client-tsdown.log" "$tsdown_js" --env.DSH_BUILD_FACE client
 }
 site_gate() {
@@ -288,6 +288,7 @@ report 'build (Typert, Host tsc/tsdown, desktop tsdown, Client tsc/tsdown)' "$bu
   "$scratch/logs/host-tsc.log" \
   "$scratch/logs/host-tsdown.log" \
   "$scratch/logs/desktop-tsdown.log" \
+  "$scratch/logs/client-references.log" \
   "$scratch/logs/client-tsc.log" \
   "$scratch/logs/client-tsdown.log"
 report 'production site (vitepress build)' "$site_status" "$scratch/logs/site.log"
diff --git a/snapshots/session/bash-startup-timeout/session.v4.jsonl b/snapshots/session/bash-startup-timeout/session.v4.jsonl
index 84e380d3cb..b3e24b53ba 100644
--- a/snapshots/session/bash-startup-timeout/session.v4.jsonl
+++ b/snapshots/session/bash-startup-timeout/session.v4.jsonl
@@ -12,12 +12,13 @@
 {"type":"request/header","data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"tools":"{{tools}}"},"reason":"initial"}}
 {"type":"request/context","data":{"provider":"deepseek-official","model":"deepseek-v4-flash"}}
 {"type":"session/title","data":{"title":"Use the bash tool to","messageSeqs":[8],"source":{"kind":"fallback"}}}
-{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"bash-startup-timeout","name":"bash","arguments":"{\"command\":\"sleep 30\",\"timeoutMs\":1,\"description\":\"Cancel a command during startup\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:4}}"},"usage":{"inputTokens":1,"outputTokens":1},"stream":[{"type":"chunk","time":1791526663346,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"chunk","time":1791526663346,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"bash-startup-timeout","name":"bash","arguments":"{\"command\":\"sleep 30\",\"timeoutMs\":1,\"description\":\"Cancel a command during startup\"}"}}},{"type":"chunk","time":1791526663346,"chunk":{"type":"usage","usage":{"inputTokens":1,"outputTokens":1}}},{"type":"chunk","time":1791526663346,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"bash-startup-timeout","name":"bash","arguments":"{\"command\":\"sleep 30\",\"timeoutMs\":1,\"description\":\"Cancel a command during startup\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:4}}"},"usage":{"inputTokens":1,"outputTokens":1},"stream":[{"type":"chunk","time":1791973104265,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"chunk","time":1791973104265,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"bash-startup-timeout","name":"bash","arguments":"{\"command\":\"sleep 30\",\"timeoutMs\":1,\"description\":\"Cancel a command during startup\"}"}}},{"type":"chunk","time":1791973104266,"chunk":{"type":"usage","usage":{"inputTokens":1,"outputTokens":1}}},{"type":"chunk","time":1791973104266,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
 {"type":"tool/call","data":{"turn":1,"step":1,"callId":"bash-startup-timeout","name":"bash","arguments":"{\"command\":\"sleep 30\",\"timeoutMs\":1,\"description\":\"Cancel a command during startup\"}"}}
-{"type":"job/registered","data":{"jobId":"{{id:1}}","owner":"{{session:1}}","kind":"bash","label":"sleep 30","startedAt":1791526663354,"toolCall":{"callId":"bash-startup-timeout","rootCallId":"bash-startup-timeout"}}}
+{"type":"job/registered","data":{"jobId":"{{id:1}}","owner":"{{session:1}}","kind":"bash","label":"sleep 30","startedAt":1791973104275,"toolCall":{"callId":"bash-startup-timeout","rootCallId":"bash-startup-timeout"}}}
 {"type":"tool/result","data":{"turn":1,"step":1,"message":{"role":"tool","source":{"kind":"tool","callId":"bash-startup-timeout"},"toolCallId":"bash-startup-timeout","content":[{"type":"text","text":"[still running after 1ms; moved to background job {{id:1}}]"}],"isError":false,"id":"{{message:5}}"},"meta":{"cwd":"{{cwd}}"}},"sourceEventSeqs":[14],"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":1,"step":1}}
 {"type":"step/start","data":{"turn":1,"step":2}}
-{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:6}}"},"usage":{"inputTokens":1,"outputTokens":1},"stream":[{"type":"chunk","time":1791526663368,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"chunk","time":1791526663368,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}},{"type":"chunk","time":1791526663368,"chunk":{"type":"usage","usage":{"inputTokens":1,"outputTokens":1}}},{"type":"chunk","time":1791526663368,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"DONE"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:6}}"},"usage":{"inputTokens":1,"outputTokens":1},"stream":[{"type":"chunk","time":1791973104295,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"chunk","time":1791973104295,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"DONE"}}},{"type":"chunk","time":1791973104295,"chunk":{"type":"usage","usage":{"inputTokens":1,"outputTokens":1}}},{"type":"chunk","time":1791973104295,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":1,"step":2}}
 {"type":"turn/end","data":{"turn":1,"reason":{"kind":"completed"}}}
+{"type":"job/settled","data":{"jobId":"{{id:1}}","owner":"{{session:1}}","kind":"bash","label":"sleep 30","startedAt":1791973104275,"toolCall":{"callId":"bash-startup-timeout","rootCallId":"bash-startup-timeout"},"finishedAt":1791973104307,"status":"killed","cause":"teardown","producerReported":true,"detail":"signal: SIGTERM"}}
diff --git a/snapshots/web/creation-recommendations/session.v4.jsonl b/snapshots/web/creation-recommendations/session.v4.jsonl
index 5c8bcd8f81..9cfead0a39 100644
--- a/snapshots/web/creation-recommendations/session.v4.jsonl
+++ b/snapshots/web/creation-recommendations/session.v4.jsonl
@@ -16,7 +16,7 @@
 {"type":"session/title","data":{"title":"I wish I had a","messageSeqs":[8],"source":{"kind":"fallback"}}}
 {"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"call_creation_skill","name":"skill","arguments":"{\"name\":\"personalized-pages\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"{{message:6}}"},"stream":[{"type":"chunk","time":1792674450282,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"chunk","time":1792674450282,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"call_creation_skill","name":"skill","arguments":"{\"name\":\"personalized-pages\"}"}}},{"type":"chunk","time":1792674450283,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
 {"type":"tool/call","data":{"turn":1,"step":1,"callId":"call_creation_skill","name":"skill","arguments":"{\"name\":\"personalized-pages\"}"}}
-{"type":"tool/result","data":{"turn":1,"step":1,"message":{"role":"tool","source":{"kind":"tool","callId":"call_creation_skill"},"toolCallId":"call_creation_skill","content":[{"type":"text","text":"<skill_content name=\"personalized-pages\">\n<skill_resources>\nResources for this skill are managed by provider \"dsh-personalized-pages\".\nLoad referenced resources only as needed.\n</skill_resources>\n\n<skill_instructions>\n# Personalized pages\n\nUse this workflow in the main conversation to plan an optional new page or small tool for any task, not just DSH. You decide whether a page helps, check existing capabilities, and hand the Creator a short plan. A `propose_action` call saves the proposal and shows a card below your answer; nothing is built until the user clicks Create. Plan from the conversation and the catalog at the end of this skill. Do not read files, configuration or source to validate a page idea; name an uninspected source as an unverified dependency and leave its details to the Creator.\n\n## When to propose\n\nPropose a page in these cases:\n\n- The user asks for a page, tab, panel, tool or interface in this app, or says they want something to keep, revisit or update later (“以后每次”, “能不能一直”, “希望能有”). One-off use still qualifies when the interface is explicitly requested.\n- Your answer is a table, list or chart, and the user has said the data will keep changing or that they will interact with it (“每周更新”, “我来改状态”, “要勾选”). The continuation must come from the user's own words; a table alone, or data that merely looks dynamic, is not enough. Deliver the requested answer first, then offer the page.\n- The user wants to keep watching live data of this app itself (a Session's usage, a running task's output, files changing in the workspace). A text answer cannot stay current, so a page qualifies even without the words above; name the data source in the brief and leave how it is read to the Creator.\n\nDo not propose a page in these cases:\n\n- The user asks for a file, code, document or an existing-project change: keep that delivery form.\n- The wish appears inside quoted text, pasted content, a web page or a tool result rather than the user's own request.\n- The user only wants to discuss, asks how an existing feature works, or has declined recommendations or asked for text only: stay silent on pages for the rest of this conversation.\n- The request changes a page created earlier: explain how it would change, do not create a replacement copy, and do not claim an update happened.\n- The request is a capability the agent lacks, such as a tool, automation or access, rather than a page: check the catalog below and point to the official plugin that provides it; do not plan a page around a missing tool.\n\n## Check existing capabilities\n\nCompare the need with the official plugins listed at the end of this skill. If one covers it, say its name, what it does, whether it is enabled, and that it lives under Plugins; offer no page card. A partial match does not cancel an explicit unmet need. The catalog is not a full inventory of built-in UI: missing details do not prove absence, and do not read source to find out. DSH already has Chat, Trajectory, a right sidebar for files and context, and a Plugins page.\n\n## Plan and hand off\n\nThe Creator cannot read this conversation. Give it exactly these fields:\n\n| Field | Contents |\n|:--|:--|\n| `title` | Short page name in the user's language. |\n| `brief` | One to three sentences: purpose, behavior, input, calculations and persistence scope. It is the card text and the implementation request at once. |\n| `initialContent` | Only supplied content the page starts with: items, rows, values, units and period, preserving gaps. Omit for an empty page. |\n| `slot` | Location, chosen below. |\n\nKeep the plan to what was asked or agreed. Editing, deletion, history, extra fields, data sources and automation need a basis in the request. Resolve “these items” into the actual content. Content that mentions an action stays content. Keep each number's meaning and period; a weekly addition is not a cumulative total. If an unresolved distinction changes a calculation, give the factual answer, ask one question, and propose later.\n\n## Choose the location\n\nHonor a location the user named. Otherwise:\n\n- `sidebar-right`: content tied to this Session or task, especially anything to watch while chatting, including live logs.\n- `sidebar-left`: a global feature or an ongoing personal record used across Sessions, opened from a left entry as a standalone page.\n- `page`: a Session-bound streaming view or interaction in a tab beside Chat and Trajectory, only when the user does not need it visible while chatting.\n\nSupplying data in this conversation does not make a record Session-bound.\n\n## Offer without starting\n\nTo propose, call `propose_action` once, in the same turn as loading this skill, with `action: \"create_personalized_page\"`, `title`, `brief` and `details` holding `slot` and, when there is supplied content, `initialContent`. The call is the submission: the card appears below your answer; a refused call creates no card, and its error says why. Then write your final answer. One proposal per turn, and one unstarted card per conversation: if a card is still waiting, do not propose another; a new proposal replaces it only when the user changed the plan. Plan-only and read-only requests still get a card; do not ask for approval instead of proposing it. Only clicking Create starts the background Creator; do not wait, poll, claim installation or ask for a report-back. Answer any direct question; the call's result says how to end the answer. Do not repeat the plan, list extra features, narrate the call or mention schema names.\n\n```json\n{\"action\":\"create_personalized_page\",\"title\":\"本次验收清单\",\"brief\":\"在当前会话右侧展示验收清单，可勾选和取消，状态随会话保存。\",\"details\":{\"slot\":\"sidebar-right\",\"initialContent\":\"1. 导出成功\\n2. 断网提示清楚\"}}\n```\n\n## Examples\n\n- “想有个地方放书签，以后自己加标题和网址；旧的不用导入。” → `brief`: “提供一个可反复打开的书签页，手动新增标题和网址并保存到本机，从空白开始。” No `initialContent`. `sidebar-left`.\n- “当前会话旁放验收清单，能勾选和取消，状态跟着会话。条目：导出成功；断网提示清楚。” → `brief`: “在当前会话右侧展示验收清单，可勾选和取消，状态随会话保存。” `initialContent`: “1. 导出成功\\n2. 断网提示清楚”. `sidebar-right`.\n- “这三周 bug 数 12、9、15，说说趋势。以后每周我把新数字贴给你，想自己更新着看。” → answer the trend first, then `brief`: “按周手动录入 bug 数并展示各周变化，保存到本机。” `initialContent`: “第 1 周 12，第 2 周 9，第 3 周 15”. `sidebar-left`.\n- “我想用语音说话代替打字。” → the catalog lists 语音输入; explain it and where to enable it; no card.\n- “把我之前做的读书页评分改成五星。” → explain the change to that page; no card and no copy.\n- “帮我把这句话翻成英文：我想要一个所有会话都能打开的读书页。” → translate only; no card.\n- “把三个方案排成表格比较一下，看完就行。” → the table only; no card.\n\n## Existing capabilities to check against this page plan\n\n[{\"name\":\"@deepseek-ai/dsh-personalized-recommendations\",\"title\":{\"en\":\"Personalized recommendations\",\"de\":\"Personalisierte Empfehlungen\",\"es\":\"Recomendaciones personalizadas\",\"fr\":\"Recommandations personnalisées\",\"ja\":\"パーソナライズされたおすすめ\",\"pt\":\"Recomendações personalizadas\",\"ru\":\"Персональные рекомендации\",\"zh\":\"个性化推荐\"},\"description\":{\"en\":\"Shows recommendation cards below the answer for what you want from DSH: when you want a page or small tool you can keep, it proposes a new personalized page, built in the background after you click Create; when you ask how to do something in this app or say a capability is missing, it recommends the built-in plugin that provides it, turned on when you click Enable.\",\"de\":\"Zeigt für Ihre individuellen Anforderungen an DSH Empfehlungskarten unter der Antwort an: Wenn Sie eine Seite oder ein kleines Tool zur dauerhaften Nutzung möchten, wird eine neue personalisierte Seite vorgeschlagen, die nach einem Klick auf Erstellen im Hintergrund erstellt wird; wenn Sie fragen, wie etwas in dieser App geht, oder sagen, dass eine Funktion fehlt, wird das integrierte Plugin empfohlen, das sie bereitstellt, und nach einem Klick auf Aktivieren eingeschaltet.\",\"es\":\"Muestra tarjetas de recomendación debajo de la respuesta para tus necesidades personalizadas en DSH: cuando quieres una página o una pequeña herramienta para conservar, propone una nueva página personalizada, que se genera en segundo plano al hacer clic en Crear; cuando preguntas cómo hacer algo en esta aplicación o dices que falta una función, recomienda el complemento integrado que la ofrece, que se activa al hacer clic en Habilitar.\",\"fr\":\"Affiche des cartes de recommandation sous la réponse pour vos besoins personnalisés dans DSH : lorsque vous voulez une page ou un petit outil à conserver, propose une nouvelle page personnalisée, générée en arrière-plan après un clic sur Créer ; lorsque vous demandez comment faire quelque chose dans cette application ou signalez qu’une fonctionnalité manque, recommande le plugin intégré qui la fournit, activé lorsque vous cliquez sur Activer.\",\"ja\":\"DSH に対するあなた個人のニーズに合わせて、回答の下におすすめカードを表示します。長く使えるページや小さなツールが欲しいときは新しいパーソナルページを提案し、「作成」をクリックするとバックグラウンドで生成します。このアプリで何かをする方法を尋ねたときや機能が足りないと言ったときは、それを提供する内蔵プラグインを推薦し、「有効にする」をクリックすると有効になります。\",\"pt\":\"Mostra cartões de recomendação abaixo da resposta para suas necessidades personalizadas no DSH: quando você quer uma página ou uma pequena ferramenta para manter, propõe uma nova página personalizada, gerada em segundo plano depois que você clica em Criar; quando você pergunta como fazer algo neste aplicativo ou diz que falta um recurso, recomenda o plug-in integrado que o oferece, ativado quando você clica em Ativar.\",\"ru\":\"Показывает карточки рекомендаций под ответом с учетом ваших индивидуальных потребностей в DSH: когда вам нужна страница или небольшой инструмент для постоянного использования, предлагает новую персональную страницу, которая создается в фоне после нажатия «Создать»; когда вы спрашиваете, как что-то сделать в этом приложении, или говорите, что не хватает какой-то возможности, рекомендует встроенный плагин, который ее предоставляет, и включает его после нажатия «Включить».\",\"zh\":\"针对你对 DSH 的个性化需求，在回答下方展示推荐卡片：想要能长期使用的页面或小工具时，提议新增个性化页面，点击创建后在后台生成；问到本应用怎么做某件事或缺少某项能力时，推荐对应的内置插件，点击启用后开启。\"},\"enabled\":true},{\"name\":\"@deepseek-ai/dsh-experimental-agent-team-profile\",\"title\":{\"en\":\"Agent teams\",\"de\":\"Agententeams\",\"es\":\"Equipos de agentes\",\"fr\":\"Équipes d'agents\",\"ja\":\"エージェントチーム\",\"pt\":\"Equipes de agentes\",\"ru\":\"Команды агентов\",\"zh\":\"智能体团队\"},\"description\":{\"en\":\"Lets the agent you talk to split a job among named teammates, track it on a shared task board, and report back with their results.\",\"de\":\"Ermöglicht dem Agenten, mit dem Sie sprechen, eine Aufgabe auf benannte Teammitglieder aufzuteilen, sie auf einem gemeinsamen Aufgabenboard zu verfolgen und Ihnen mit deren Ergebnissen zu berichten.\",\"es\":\"Permite que el agente con el que habla reparta un trabajo entre compañeros con nombre, lo siga en un tablero de tareas compartido y le informe con sus resultados.\",\"fr\":\"Permet à l'agent avec lequel vous parlez de répartir un travail entre des coéquipiers nommés, de le suivre sur un tableau de tâches partagé et de vous rendre compte de leurs résultats.\",\"ja\":\"対話しているエージェントが、仕事を名前付きのチームメイトに分担させ、共有タスクボードで進捗を追跡し、チームメイトの結果をまとめて報告します。\",\"pt\":\"Permite que o agente com quem você conversa divida um trabalho entre colegas de equipe nomeados, acompanhe-o em um quadro de tarefas compartilhado e informe você com os resultados deles.\",\"ru\":\"Позволяет агенту, с которым вы общаетесь, распределить работу между именованными участниками команды, отслеживать её на общей доске задач и отчитываться перед вами об их результатах.\",\"zh\":\"让与你对话的智能体把工作分给有名字的队友，在共享任务看板上跟踪进度，并汇总队友的结果向你汇报。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-inspector-profile\",\"title\":{\"en\":\"Developer tools\",\"de\":\"Entwicklertools\",\"es\":\"Herramientas de desarrollador\",\"fr\":\"Outils de développement\",\"ja\":\"開発者ツール\",\"pt\":\"Ferramentas de desenvolvedor\",\"ru\":\"Инструменты разработчика\",\"zh\":\"开发者工具\"},\"description\":{\"en\":\"For troubleshooting: view what DSH recorded for a session in Session log, inspect per-turn and per-step statistics in the Statistics tab, and debug the DSH backend in Chrome DevTools.\",\"de\":\"Zur Fehlersuche: Sehen Sie in „Sitzungsprotokoll“, was DSH für eine Sitzung aufgezeichnet hat, prüfen Sie im Tab „Statistik“ Kontext, Dauer, Cache und Werkzeugkosten pro Runde und Schritt und debuggen Sie das DSH-Backend in Chrome DevTools.\",\"es\":\"Para solucionar problemas: vea en «Registro de sesión» lo que DSH registró de una sesión, consulte el contexto, los tiempos, la caché y el coste de herramientas por turno y paso en la pestaña «Estadísticas», y depure el backend de DSH en Chrome DevTools.\",\"fr\":\"Pour le dépannage : consultez dans « Journal de session » ce que DSH a enregistré pour une session, examinez le contexte, les durées, le cache et le coût des outils par tour et étape dans l’onglet « Statistiques », et déboguez le backend de DSH dans Chrome DevTools.\",\"ja\":\"トラブルシューティング用です。「セッションログ」で DSH がセッションについて記録した内容を確認し、「統計」タブでターン/ステップごとのコンテキスト、時間、キャッシュ、ツールコストを確認し、Chrome DevTools で DSH バックエンドをデバッグできます。\",\"pt\":\"Para solução de problemas: veja em «Registro da sessão» o que o DSH registrou de uma sessão, consulte contexto, tempos, cache e custo de ferramentas por turno e etapa na aba «Estatísticas» e depure o backend do DSH no Chrome DevTools.\",\"ru\":\"Для диагностики: просматривайте в «Журнале сеанса», что DSH записал для сеанса, смотрите контекст, время, кэш и стоимость инструментов по ходам и шагам на вкладке «Статистика» и отлаживайте бэкенд DSH в Chrome DevTools.\",\"zh\":\"用于排查问题：在「会话数据诊断」中查看 DSH 为会话记录的内容，在「统计」页签查看每轮/每步的上下文、耗时、缓存和工具成本，并在 Chrome DevTools 中调试 DSH 后端。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-voice-input-bundle\",\"title\":{\"en\":\"Voice input\",\"de\":\"Spracheingabe\",\"es\":\"Entrada de voz\",\"fr\":\"Saisie vocale\",\"ja\":\"音声入力\",\"pt\":\"Entrada de voz\",\"ru\":\"Голосовой ввод\",\"zh\":\"语音输入\"},\"description\":{\"en\":\"Transcribe recordings locally with SenseVoice; first use requires installing dependencies.\",\"de\":\"Transkribieren Sie Aufnahmen lokal mit SenseVoice; Für die erste Verwendung müssen Abhängigkeiten installiert werden.\",\"es\":\"Transcribe grabaciones localmente con SenseVoice; El primer uso requiere instalar dependencias.\",\"fr\":\"Transcrivez les enregistrements localement avec SenseVoice ; la première utilisation nécessite l'installation de dépendances.\",\"ja\":\"ローカルの SenseVoice で録音を文字に起こします。初回利用時には依存関係のインストールが必要です。\",\"pt\":\"Transcreva gravações localmente com SenseVoice; o primeiro uso requer a instalação de dependências.\",\"ru\":\"Транскрибируйте записи локально с помощью SenseVoice; при первом использовании требуется установка зависимостей.\",\"zh\":\"在本机使用 SenseVoice 转写录音，首次使用需安装依赖。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-auto-review\",\"title\":{\"en\":\"Auto authorization review\",\"de\":\"Automatische Autorisierungsüberprüfung\",\"es\":\"Revisión de autorización automática\",\"fr\":\"Examen des autorisations automatiques\",\"ja\":\"自動認可レビュー\",\"pt\":\"Revisão de autorização automática\",\"ru\":\"Проверка автоматической авторизации\",\"zh\":\"自动授权审查\"},\"description\":{\"en\":\"Adds an Auto review access mode: before each tool call, a model checks it against what you asked for, runs allowed calls at once, and holds denied calls for your approval.\",\"de\":\"Fügt den Zugriffsmodus „Auto review“ hinzu: Vor jedem Tool-Aufruf prüft ein Modell den Aufruf anhand Ihrer Anforderung; zugelassene Aufrufe laufen sofort, abgelehnte Aufrufe warten auf Ihre Genehmigung.\",\"es\":\"Añade el modo de acceso “Auto review”: antes de cada llamada a una herramienta, un modelo comprueba la llamada frente a lo que usted pidió; las llamadas permitidas se ejecutan de inmediato y las denegadas esperan su aprobación.\",\"fr\":\"Ajoute le mode d'accès « Auto review » : avant chaque appel d'outil, un modèle vérifie l'appel par rapport à ce que vous avez demandé ; les appels autorisés s'exécutent immédiatement et les appels refusés attendent votre approbation.\",\"ja\":\"「自動認可レビュー」アクセスモードを追加します。各ツール呼び出しの前に、モデルがその呼び出しをあなたの依頼内容と照らし合わせて確認し、許可された呼び出しは即座に実行され、拒否された呼び出しはあなたの承認を待ちます。\",\"pt\":\"Adiciona o modo de acesso “Auto review”: antes de cada chamada de ferramenta, um modelo verifica a chamada em relação ao que você pediu; as chamadas permitidas são executadas imediatamente e as negadas aguardam sua aprovação.\",\"ru\":\"Добавляет режим доступа «Auto review»: перед каждым вызовом инструмента модель сверяет вызов с вашей просьбой; разрешённые вызовы выполняются сразу, а отклонённые ждут вашего одобрения.\",\"zh\":\"提供“自动审查”访问模式：每次工具调用前，由模型对照你的要求检查，获准的调用立即运行，被拒绝的调用等你审批。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-cot-translation-bundle\",\"title\":{\"en\":\"Machine translation of reasoning\",\"de\":\"Maschinelle Übersetzung der Argumentation\",\"es\":\"Traducción automática de razonamiento\",\"fr\":\"Traduction automatique du raisonnement\",\"ja\":\"思考内容の機械翻訳\",\"pt\":\"Tradução automática de raciocínio\",\"ru\":\"Машинный перевод рассуждений\",\"zh\":\"思考过程机器翻译\"},\"description\":{\"en\":\"Translates expanded Think rows into your chosen language as the agent writes them, and View original switches back.\",\"de\":\"Übersetzt aufgeklappte „Denken Sie nach“-Zeilen, während der Agent sie schreibt, in die von Ihnen gewählte Sprache, und „Original ansehen“ wechselt zurück.\",\"es\":\"Traduce las filas “pensar” expandidas al idioma que elija mientras el agente las escribe, y “Ver original” vuelve al texto original.\",\"fr\":\"Traduit les lignes « Pensez » développées dans la langue de votre choix pendant que l'agent les écrit, et « Voir l'original » permet de revenir au texte d'origine.\",\"ja\":\"エージェントが書き出すのと同時に、展開された「思考」行を選択した言語に翻訳します。「原文を表示」で原文に戻せます。\",\"pt\":\"Traduz as linhas “Pense” expandidas para o idioma que você escolher enquanto o agente as escreve, e “Ver original” volta ao texto original.\",\"ru\":\"Переводит развёрнутые строки «Подумайте» на выбранный вами язык по мере того, как агент их пишет, а «Посмотреть оригинал» возвращает исходный текст.\",\"zh\":\"智能体输出时，把展开的“思考”行翻译成你选择的语言，点击“查看原文”可切换回原文。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-badge-skill-bundle\",\"title\":{\"en\":\"DSH badge skill\",\"de\":\"DSH-Abzeichen-Fertigkeit\",\"es\":\"Habilidad de insignia DSH\",\"fr\":\"Compétence du badge DSH\",\"ja\":\"DSH バッジスキル\",\"pt\":\"DSH habilidade de distintivo\",\"ru\":\"DSH значок навыка\",\"zh\":\"DSH 徽章技能\"},\"description\":{\"en\":\"Let agents add a “powered by dsh” badge to documents, pull requests, and other outputs.\",\"de\":\"Lassen Sie Agenten Dokumente, Pull-Requests und andere Ausgaben mit einem „powered by dsh“-Badge versehen.\",\"es\":\"Permita que los agentes agreguen una insignia \\\"con tecnología de dsh\\\" a documentos, solicitudes de extracción y otros resultados.\",\"fr\":\"Laissez les agents ajouter un badge « propulsé par dsh » aux documents, demandes d'extraction et autres sorties.\",\"ja\":\"エージェントが文書や PR などの成果物に「powered by dsh」バッジを追加できます。\",\"pt\":\"Permita que os agentes adicionem um selo “powered by dsh” a documentos, pull requests e outros resultados.\",\"ru\":\"Позвольте агентам добавлять значок «Powered by dsh» к документам, запросам на включение и другим результатам.\",\"zh\":\"让 Agent 为文档、PR 等产出添加「powered by dsh」徽章。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-ralph-bundle\",\"title\":{\"en\":\"Ralph loops\",\"de\":\"Ralph-Loops\",\"es\":\"Bucles de Ralph\",\"fr\":\"Boucles Ralph\",\"ja\":\"Ralph ループ\",\"pt\":\"Loops de Ralph\",\"ru\":\"Ральф петли\",\"zh\":\"Ralph 循环\"},\"description\":{\"en\":\"Ask for a Ralph loop with a goal, and the agent starts a fresh agent on it round after round until the goal is met, a blocker is reported, or the round limit is reached.\",\"de\":\"Bitten Sie um eine Ralph-Schleife mit einem Ziel, und der Agent startet Runde um Runde einen neuen Agenten darauf, bis das Ziel erreicht ist, ein Hindernis gemeldet wird oder das Rundenlimit erreicht ist.\",\"es\":\"Pida un bucle Ralph con un objetivo, y el agente inicia un agente nuevo sobre él ronda tras ronda hasta que se cumpla el objetivo, se informe de un bloqueo o se alcance el límite de rondas.\",\"fr\":\"Demandez une boucle Ralph avec un objectif, et l'agent lance un nouvel agent dessus, tour après tour, jusqu'à ce que l'objectif soit atteint, qu'un blocage soit signalé ou que la limite de tours soit atteinte.\",\"ja\":\"目標を指定して Ralph ループを依頼すると、エージェントは、目標が達成されるか、阻害要因が報告されるか、ラウンド数の上限に達するまで、ラウンドごとに新しいエージェントを起動してその目標に取り組ませます。\",\"pt\":\"Peça um loop Ralph com um objetivo, e o agente inicia um novo agente nele rodada após rodada até que o objetivo seja atingido, um bloqueio seja informado ou o limite de rodadas seja alcançado.\",\"ru\":\"Попросите запустить цикл Ralph с целью, и агент будет раунд за раундом запускать для неё нового агента, пока цель не будет достигнута, не будет сообщено о препятствии или не будет достигнут лимит раундов.\",\"zh\":\"要求用 Ralph 循环完成一个目标后，智能体会一轮接一轮地启动新的智能体处理它，直到目标达成、报告受阻或达到轮次上限。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-session-titles-bundle\",\"title\":{\"en\":\"Conversation-following titles\",\"de\":\"Konversationsfolgende Titel\",\"es\":\"Títulos que siguen la conversación\",\"fr\":\"Titres de suivi de conversation\",\"ja\":\"会話に追従するタイトル\",\"pt\":\"Títulos que acompanham conversas\",\"ru\":\"Заголовки, следующие за разговором\",\"zh\":\"随对话更新的标题\"},\"description\":{\"en\":\"Writes a session's title from all of your messages and updates it when the main task changes, instead of only from the first message.\",\"de\":\"Erstellt den Titel einer Sitzung aus all Ihren Nachrichten und aktualisiert ihn, wenn sich die Hauptaufgabe ändert, statt ihn nur aus der ersten Nachricht zu bilden.\",\"es\":\"Escribe el título de una sesión a partir de todos sus mensajes y lo actualiza cuando cambia la tarea principal, en lugar de basarse solo en el primer mensaje.\",\"fr\":\"Rédige le titre d'une session à partir de tous vos messages et le met à jour lorsque la tâche principale change, au lieu de se baser uniquement sur le premier message.\",\"ja\":\"最初のメッセージだけでなく、あなたのすべてのメッセージからセッションのタイトルを作成し、主なタスクが変わったときに更新します。\",\"pt\":\"Escreve o título de uma sessão a partir de todas as suas mensagens e o atualiza quando a tarefa principal muda, em vez de usar apenas a primeira mensagem.\",\"ru\":\"Составляет заголовок сеанса по всем вашим сообщениям и обновляет его при смене основной задачи, а не только по первому сообщению.\",\"zh\":\"根据你的所有消息生成会话标题，并在主要任务变化时更新，而不是只根据第一条消息生成。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-terminal-bundle\",\"title\":{\"en\":\"Persistent terminals\",\"de\":\"Persistente Terminals\",\"es\":\"Terminales persistentes\",\"fr\":\"Terminaux persistants\",\"ja\":\"永続ターミナル\",\"pt\":\"Terminais persistentes\",\"ru\":\"Постоянные терминалы\",\"zh\":\"持久终端\"},\"description\":{\"en\":\"Gives the agent terminals whose processes keep running in the background between tool calls, so it can start a dev server or REPL and come back later to read output or type input.\",\"de\":\"Stellt dem Agenten Terminals bereit, deren Prozesse zwischen Tool-Aufrufen im Hintergrund weiterlaufen, sodass er einen Entwicklungsserver oder eine REPL starten und später zurückkehren kann, um Ausgaben zu lesen oder Eingaben zu tippen.\",\"es\":\"Proporciona al agente terminales cuyos procesos siguen ejecutándose en segundo plano entre llamadas a herramientas, de modo que puede iniciar un servidor de desarrollo o un REPL y volver más tarde para leer la salida o escribir entradas.\",\"fr\":\"Fournit à l'agent des terminaux dont les processus continuent de s'exécuter en arrière-plan d'un appel d'outil à l'autre, afin qu'il puisse lancer un serveur de développement ou un REPL et revenir plus tard lire la sortie ou saisir des entrées.\",\"ja\":\"エージェントにターミナルを提供します。プロセスはツール呼び出し間もバックグラウンドで実行され続けるため、エージェントは開発サーバーや REPL を起動し、後から出力を読んだり入力したりできます。\",\"pt\":\"Fornece ao agente terminais cujos processos continuam em execução em segundo plano entre chamadas de ferramentas, para que ele possa iniciar um servidor de desenvolvimento ou um REPL e voltar depois para ler a saída ou digitar entradas.\",\"ru\":\"Предоставляет агенту терминалы, процессы которых продолжают работать в фоне между вызовами инструментов, поэтому агент может запустить сервер разработки или REPL и позже вернуться, чтобы прочитать вывод или ввести данные.\",\"zh\":\"为智能体提供终端，进程在多次工具调用之间持续在后台运行，因此它可以启动开发服务器或 REPL，稍后再读取输出或继续输入。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-session-search\",\"title\":{\"en\":\"Session search\",\"de\":\"Sitzungssuche\",\"es\":\"búsqueda de sesión\",\"fr\":\"Recherche de sessions\",\"ja\":\"セッション検索\",\"pt\":\"Pesquisa de sessão\",\"ru\":\"Поиск сеанса\",\"zh\":\"会话搜索\"},\"description\":{\"en\":\"Ask about earlier work, such as “How did we fix the pool leak last week?”, and the agent searches your earlier sessions in the same workspace to answer.\",\"de\":\"Fragen Sie nach früherer Arbeit, etwa „Wie haben wir letzte Woche das Pool-Leck behoben?“, und der Agent durchsucht Ihre früheren Sitzungen aus demselben Arbeitsverzeichnis, um zu antworten.\",\"es\":\"Pregunte por trabajo anterior, como “¿Cómo arreglamos la fuga del pool la semana pasada?”, y el agente busca en sus sesiones anteriores del mismo directorio de trabajo para responder.\",\"fr\":\"Posez une question sur un travail antérieur, par exemple « Comment avons-nous corrigé la fuite du pool la semaine dernière ? », et l'agent recherche dans vos sessions antérieures du même répertoire de travail pour répondre.\",\"ja\":\"「先週プールのリークをどう直した？」のように以前の作業について尋ねると、エージェントは同じ作業ディレクトリの過去のセッションを検索して回答します。\",\"pt\":\"Pergunte sobre trabalhos anteriores, como “Como corrigimos o vazamento do pool na semana passada?”, e o agente pesquisa suas sessões anteriores do mesmo diretório de trabalho para responder.\",\"ru\":\"Спросите о прошлой работе, например «Как мы исправили утечку в пуле на прошлой неделе?», и агент выполнит поиск по вашим прошлым сеансам из того же рабочего каталога, чтобы ответить.\",\"zh\":\"询问以往的工作，例如“上周我们是怎么修好连接池泄漏的？”，智能体会搜索同一工作区的历史会话来回答。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-tool-worktree\",\"title\":{\"en\":\"Git worktrees\",\"de\":\"Git-Arbeitsbäume\",\"es\":\"árboles de trabajo de git\",\"fr\":\"Arbres de travail Git\",\"ja\":\"Git ワークツリー\",\"pt\":\"Árvores de trabalho Git\",\"ru\":\"Рабочие деревья Git\",\"zh\":\"Git 工作树\"},\"description\":{\"en\":\"Ask for work on a new branch, and the agent creates a separate Git worktree and continues there, leaving your current checkout as it is.\",\"de\":\"Bitten Sie um Arbeit auf einem neuen Branch, und der Agent erstellt einen separaten Git-Worktree und arbeitet dort weiter, während Ihr aktueller Checkout unverändert bleibt.\",\"es\":\"Pida trabajar en una rama nueva, y el agente crea un worktree de Git independiente y continúa allí, dejando su checkout actual tal como está.\",\"fr\":\"Demandez à travailler sur une nouvelle branche, et l'agent crée un worktree Git distinct et y poursuit le travail, en laissant votre copie de travail actuelle telle quelle.\",\"ja\":\"新しいブランチでの作業を依頼すると、エージェントは別の Git ワークツリーを作成してそこで作業を続け、現在のチェックアウトはそのまま残します。\",\"pt\":\"Peça para trabalhar em um novo branch, e o agente cria um worktree do Git separado e continua lá, deixando seu checkout atual como está.\",\"ru\":\"Попросите поработать в новой ветке, и агент создаст отдельное рабочее дерево Git и продолжит работу там, оставив вашу текущую рабочую копию как есть.\",\"zh\":\"要求在新分支上工作时，智能体会创建单独的 Git 工作树并在其中继续，你当前的工作树保持原样。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-cua-bundle\",\"title\":{\"en\":\"Computer use\",\"de\":\"Computernutzung\",\"es\":\"Uso de la computadora\",\"fr\":\"Utilisation de l'ordinateur\",\"ja\":\"Computer Use\",\"pt\":\"Uso do computador\",\"ru\":\"Использование компьютера\",\"zh\":\"Computer Use\"},\"description\":{\"en\":\"Currently supports macOS; Windows support is in development. Loads computer use for existing and new PTC sessions. Switch to PTC mode and grant Accessibility and Screen Recording permissions to use it.\",\"de\":\"Unterstützt derzeit macOS; Die Windows-Unterstützung befindet sich in der Entwicklung. Lädt die Computernutzung für bestehende und neue PTC-Sitzungen. Wechseln Sie in den PTC-Modus und erteilen Sie die Berechtigungen für Barrierefreiheit und Bildschirmaufzeichnung, um ihn zu verwenden.\",\"es\":\"Actualmente es compatible con macOS; El soporte para Windows está en desarrollo. Carga el uso de la computadora para sesiones PTC nuevas y existentes. Cambie al modo PTC y otorgue permisos de Accesibilidad y Grabación de pantalla para usarlo.\",\"fr\":\"Prend actuellement en charge macOS ; La prise en charge de Windows est en cours de développement. Charge l'utilisation de l'ordinateur pour les sessions PTC existantes et nouvelles. Passez en mode PTC et accordez les autorisations d’accessibilité et d’enregistrement d’écran pour l’utiliser.\",\"ja\":\"現在は macOS のみ対応し、Windows 対応は開発中です。既存および新規の PTC セッションに Computer Use を読み込みます。PTC モードに切り替え、アクセシビリティと画面収録の権限を許可して使用してください。\",\"pt\":\"Atualmente suporta macOS; O suporte Windows está em desenvolvimento. Carrega o uso do computador para sessões PTC novas e existentes. Mude para o modo PTC e conceda permissões de acessibilidade e gravação de tela para usá-lo.\",\"ru\":\"В настоящее время поддерживается macOS; Поддержка Windows находится в разработке. Загружает использование компьютера для существующих и новых сеансов PTC. Переключитесь в режим PTC и предоставьте разрешения на доступность и запись экрана для его использования.\",\"zh\":\"目前仅支持 macOS，Windows 支持正在开发中。为已有及新建 PTC 会话加载 Computer Use。请切换到 PTC 模式来使用，并授予辅助功能和屏幕录制权限。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-plugin-market-bundle\",\"title\":{\"en\":\"Custom plugin indexes\",\"de\":\"Benutzerdefinierte Plugin-Indizes\",\"es\":\"Índices de complementos personalizados\",\"fr\":\"Index de plugins personnalisés\",\"ja\":\"カスタムプラグインインデックス\",\"pt\":\"Índices de plug-ins personalizados\",\"ru\":\"Пользовательские индексы плагинов\",\"zh\":\"自定义插件索引\"},\"description\":{\"en\":\"Adds a Discover tab to Plugins, where you browse and install plugins from plugin indexes you add.\",\"de\":\"Fügt unter „Plugins“ den Tab „Entdecken“ hinzu, in dem Sie Plugins aus von Ihnen hinzugefügten Plugin-Indizes durchsuchen und installieren.\",\"es\":\"Añade la pestaña “Descubrir” a “Complementos”, donde puede explorar e instalar complementos de los índices de complementos que agregue.\",\"fr\":\"Ajoute à « Plugins » un onglet « Découvrez » où vous parcourez et installez des plugins provenant des index de plugins que vous ajoutez.\",\"ja\":\"「プラグイン」に「見つける」タブを追加し、追加したプラグインインデックスからプラグインを閲覧・インストールできるようにします。\",\"pt\":\"Adiciona a guia “Descubra” a “Plug-ins”, onde você navega e instala plug-ins dos índices de plug-ins que adiciona.\",\"ru\":\"Добавляет в «Плагины» вкладку «Откройте для себя», где можно просматривать и устанавливать плагины из добавленных вами индексов плагинов.\",\"zh\":\"在插件页添加“发现”标签页，从你添加的插件索引中浏览和安装插件。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-forge-bundle\",\"title\":{\"en\":\"Change requests & worktrees\",\"de\":\"Änderungsanfragen und Arbeitsbäume\",\"es\":\"Solicitudes de cambio y árboles de trabajo\",\"fr\":\"Demandes de modification et arbres de travail\",\"ja\":\"変更リクエストとワークツリー\",\"pt\":\"Solicitações de alteração e árvores de trabalho\",\"ru\":\"Запросы на изменение и рабочие деревья\",\"zh\":\"变更请求与工作树\"},\"description\":{\"en\":\"Track each Session's change requests with their checks and reviews, and start new Sessions in a Git worktree; uses the gh CLI for GitHub.\",\"de\":\"Verfolgen Sie die Änderungsanfragen jeder Sitzung mit ihren Prüfungen und Reviews und starten Sie neue Sitzungen in einem Git-Arbeitsbaum; nutzt die gh CLI für GitHub.\",\"es\":\"Siga las solicitudes de cambio de cada sesión con sus comprobaciones y revisiones, e inicie nuevas sesiones en un árbol de trabajo de Git; usa la CLI gh para GitHub.\",\"fr\":\"Suivez les demandes de modification de chaque session avec leurs vérifications et revues, et démarrez de nouvelles sessions dans un arbre de travail Git ; utilise la CLI gh pour GitHub.\",\"ja\":\"各セッションの変更リクエストとそのチェックやレビューを追跡し、新しいセッションを Git ワークツリーで開始できます。GitHub には gh CLI を使用します。\",\"pt\":\"Acompanhe as solicitações de alteração de cada sessão com suas verificações e revisões e inicie novas sessões em uma árvore de trabalho Git; usa a CLI gh para o GitHub.\",\"ru\":\"Отслеживайте запросы на изменение каждого сеанса вместе с их проверками и ревью и начинайте новые сеансы в рабочем дереве Git; для GitHub используется gh CLI.\",\"zh\":\"跟踪每个会话的变更请求及其检查与评审，新会话也可以在 Git 工作树中开始；GitHub 通过 gh 命令行访问。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-subagent-claude-code\",\"title\":{\"de\":\"Claude Code-Subagent\",\"en\":\"Claude Code subagent\",\"es\":\"Subagente Claude Code\",\"fr\":\"Sous-agent Claude Code\",\"ja\":\"Claude Code サブエージェント\",\"pt\":\"Claude Code subagente\",\"ru\":\"Субагент Claude Code\",\"zh\":\"Claude Code 子智能体\"},\"description\":{\"de\":\"Delegieren Sie eine Aufgabe an Claude Code, indem Sie dessen native Authentifizierung und Einstellungen verwenden.\",\"en\":\"Delegate one task to Claude Code using its native authentication and settings.\",\"es\":\"Delegue una tarea a Claude Code utilizando su autenticación y configuración nativas.\",\"fr\":\"Déléguez une tâche à Claude Code à l’aide de son authentification et de ses paramètres natifs.\",\"ja\":\"Claude Code のネイティブの認証と設定を使用して、単独のタスクを委派します。\",\"pt\":\"Delegue uma tarefa a Claude Code usando sua autenticação e configurações nativas.\",\"ru\":\"Делегируйте одну задачу Claude Code, используя его встроенную аутентификацию и настройки.\",\"zh\":\"使用 Claude Code 原生认证和设置委派单个任务。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-subagent-codex\",\"title\":{\"de\":\"Codex-Subagent\",\"en\":\"Codex subagent\",\"es\":\"Subagente Codex\",\"fr\":\"Sous-agent Codex\",\"ja\":\"Codex サブエージェント\",\"pt\":\"Codex subagente\",\"ru\":\"Субагент Codex\",\"zh\":\"Codex 子智能体\"},\"description\":{\"de\":\"Delegieren Sie eine Aufgabe an Codex, indem Sie dessen native Authentifizierung und Einstellungen verwenden.\",\"en\":\"Delegate one task to Codex using its native authentication and settings.\",\"es\":\"Delegue una tarea a Codex utilizando su autenticación y configuración nativas.\",\"fr\":\"Déléguez une tâche à Codex à l’aide de son authentification et de ses paramètres natifs.\",\"ja\":\"Codex のネイティブの認証と設定を使用して、単独のタスクを委派します。\",\"pt\":\"Delegue uma tarefa a Codex usando sua autenticação e configurações nativas.\",\"ru\":\"Делегируйте одну задачу Codex, используя его встроенную аутентификацию и настройки.\",\"zh\":\"使用 Codex 原生认证和设置委派单个任务。\"},\"enabled\":false}]\n</skill_instructions>\n</skill_content>"}],"isError":false,"id":"{{message:7}}"}},"sourceEventSeqs":[16],"surfaceOp":"append"}
+{"type":"tool/result","data":{"turn":1,"step":1,"message":{"role":"tool","source":{"kind":"tool","callId":"call_creation_skill"},"toolCallId":"call_creation_skill","content":[{"type":"text","text":"<skill_content name=\"personalized-pages\">\n<skill_resources>\nResources for this skill are managed by provider \"dsh-personalized-pages\".\nLoad referenced resources only as needed.\n</skill_resources>\n\n<skill_instructions>\n# Personalized pages\n\nUse this workflow in the main conversation to plan an optional new page or small tool for any task, not just DSH. You decide whether a page helps, check existing capabilities, and hand the Creator a short plan. A `propose_action` call saves the proposal and shows a card below your answer; nothing is built until the user clicks Create. Plan from the conversation and the catalog at the end of this skill. Do not read files, configuration or source to validate a page idea; name an uninspected source as an unverified dependency and leave its details to the Creator.\n\n## When to propose\n\nPropose a page in these cases:\n\n- The user asks for a page, tab, panel, tool or interface in this app, or says they want something to keep, revisit or update later (“以后每次”, “能不能一直”, “希望能有”). One-off use still qualifies when the interface is explicitly requested.\n- Your answer is a table, list or chart, and the user has said the data will keep changing or that they will interact with it (“每周更新”, “我来改状态”, “要勾选”). The continuation must come from the user's own words; a table alone, or data that merely looks dynamic, is not enough. Deliver the requested answer first, then offer the page.\n- The user wants to keep watching live data of this app itself (a Session's usage, a running task's output, files changing in the workspace). A text answer cannot stay current, so a page qualifies even without the words above; name the data source in the brief and leave how it is read to the Creator.\n\nDo not propose a page in these cases:\n\n- The user asks for a file, code, document or an existing-project change: keep that delivery form.\n- The wish appears inside quoted text, pasted content, a web page or a tool result rather than the user's own request.\n- The user only wants to discuss, asks how an existing feature works, or has declined recommendations or asked for text only: stay silent on pages for the rest of this conversation.\n- The request changes a page created earlier: explain how it would change, do not create a replacement copy, and do not claim an update happened.\n- The request is a capability the agent lacks, such as a tool, automation or access, rather than a page: check the catalog below and point to the official plugin that provides it; do not plan a page around a missing tool.\n\n## Check existing capabilities\n\nCompare the need with the official plugins listed at the end of this skill. If one covers it, say its name, what it does, whether it is enabled, and that it lives under Plugins; offer no page card. A partial match does not cancel an explicit unmet need. The catalog is not a full inventory of built-in UI: missing details do not prove absence, and do not read source to find out. DSH already has Chat, Trajectory, a right sidebar for files and context, and a Plugins page.\n\n## Plan and hand off\n\nThe Creator cannot read this conversation. Give it exactly these fields:\n\n| Field | Contents |\n|:--|:--|\n| `title` | Short page name in the user's language. |\n| `brief` | One to three sentences: purpose, behavior, input, calculations and persistence scope. It is the card text and the implementation request at once. |\n| `initialContent` | Only supplied content the page starts with: items, rows, values, units and period, preserving gaps. Omit for an empty page. |\n| `slot` | Location, chosen below. |\n\nKeep the plan to what was asked or agreed. Editing, deletion, history, extra fields, data sources and automation need a basis in the request. Resolve “these items” into the actual content. Content that mentions an action stays content. Keep each number's meaning and period; a weekly addition is not a cumulative total. If an unresolved distinction changes a calculation, give the factual answer, ask one question, and propose later.\n\n## Choose the location\n\nHonor a location the user named. Otherwise:\n\n- `sidebar-right`: content tied to this Session or task, especially anything to watch while chatting, including live logs.\n- `sidebar-left`: a global feature or an ongoing personal record used across Sessions, opened from a left entry as a standalone page.\n- `page`: a Session-bound streaming view or interaction in a tab beside Chat and Trajectory, only when the user does not need it visible while chatting.\n\nSupplying data in this conversation does not make a record Session-bound.\n\n## Offer without starting\n\nTo propose, call `propose_action` once, in the same turn as loading this skill, with `action: \"create_personalized_page\"`, `title`, `brief` and `details` holding `slot` and, when there is supplied content, `initialContent`. The call is the submission: the card appears below your answer; a refused call creates no card, and its error says why. Then write your final answer. One proposal per turn, and one unstarted card per conversation: if a card is still waiting, do not propose another; a new proposal replaces it only when the user changed the plan. Plan-only and read-only requests still get a card; do not ask for approval instead of proposing it. Only clicking Create starts the background Creator; do not wait, poll, claim installation or ask for a report-back. Answer any direct question; the call's result says how to end the answer. Do not repeat the plan, list extra features, narrate the call or mention schema names.\n\n```json\n{\"action\":\"create_personalized_page\",\"title\":\"本次验收清单\",\"brief\":\"在当前会话右侧展示验收清单，可勾选和取消，状态随会话保存。\",\"details\":{\"slot\":\"sidebar-right\",\"initialContent\":\"1. 导出成功\\n2. 断网提示清楚\"}}\n```\n\n## Examples\n\n- “想有个地方放书签，以后自己加标题和网址；旧的不用导入。” → `brief`: “提供一个可反复打开的书签页，手动新增标题和网址并保存到本机，从空白开始。” No `initialContent`. `sidebar-left`.\n- “当前会话旁放验收清单，能勾选和取消，状态跟着会话。条目：导出成功；断网提示清楚。” → `brief`: “在当前会话右侧展示验收清单，可勾选和取消，状态随会话保存。” `initialContent`: “1. 导出成功\\n2. 断网提示清楚”. `sidebar-right`.\n- “这三周 bug 数 12、9、15，说说趋势。以后每周我把新数字贴给你，想自己更新着看。” → answer the trend first, then `brief`: “按周手动录入 bug 数并展示各周变化，保存到本机。” `initialContent`: “第 1 周 12，第 2 周 9，第 3 周 15”. `sidebar-left`.\n- “我想用语音说话代替打字。” → the catalog lists 语音输入; explain it and where to enable it; no card.\n- “把我之前做的读书页评分改成五星。” → explain the change to that page; no card and no copy.\n- “帮我把这句话翻成英文：我想要一个所有会话都能打开的读书页。” → translate only; no card.\n- “把三个方案排成表格比较一下，看完就行。” → the table only; no card.\n\n## Existing capabilities to check against this page plan\n\n[{\"name\":\"@deepseek-ai/dsh-personalized-recommendations\",\"title\":{\"en\":\"Personalized recommendations\",\"de\":\"Personalisierte Empfehlungen\",\"es\":\"Recomendaciones personalizadas\",\"fr\":\"Recommandations personnalisées\",\"ja\":\"パーソナライズされたおすすめ\",\"pt\":\"Recomendações personalizadas\",\"ru\":\"Персональные рекомендации\",\"zh\":\"个性化推荐\"},\"description\":{\"en\":\"Shows recommendation cards below the answer for what you want from DSH: when you want a page or small tool you can keep, it proposes a new personalized page, built in the background after you click Create; when you ask how to do something in this app or say a capability is missing, it recommends the built-in plugin that provides it, turned on when you click Enable.\",\"de\":\"Zeigt für Ihre individuellen Anforderungen an DSH Empfehlungskarten unter der Antwort an: Wenn Sie eine Seite oder ein kleines Tool zur dauerhaften Nutzung möchten, wird eine neue personalisierte Seite vorgeschlagen, die nach einem Klick auf Erstellen im Hintergrund erstellt wird; wenn Sie fragen, wie etwas in dieser App geht, oder sagen, dass eine Funktion fehlt, wird das integrierte Plugin empfohlen, das sie bereitstellt, und nach einem Klick auf Aktivieren eingeschaltet.\",\"es\":\"Muestra tarjetas de recomendación debajo de la respuesta para tus necesidades personalizadas en DSH: cuando quieres una página o una pequeña herramienta para conservar, propone una nueva página personalizada, que se genera en segundo plano al hacer clic en Crear; cuando preguntas cómo hacer algo en esta aplicación o dices que falta una función, recomienda el complemento integrado que la ofrece, que se activa al hacer clic en Habilitar.\",\"fr\":\"Affiche des cartes de recommandation sous la réponse pour vos besoins personnalisés dans DSH : lorsque vous voulez une page ou un petit outil à conserver, propose une nouvelle page personnalisée, générée en arrière-plan après un clic sur Créer ; lorsque vous demandez comment faire quelque chose dans cette application ou signalez qu’une fonctionnalité manque, recommande le plugin intégré qui la fournit, activé lorsque vous cliquez sur Activer.\",\"ja\":\"DSH に対するあなた個人のニーズに合わせて、回答の下におすすめカードを表示します。長く使えるページや小さなツールが欲しいときは新しいパーソナルページを提案し、「作成」をクリックするとバックグラウンドで生成します。このアプリで何かをする方法を尋ねたときや機能が足りないと言ったときは、それを提供する内蔵プラグインを推薦し、「有効にする」をクリックすると有効になります。\",\"pt\":\"Mostra cartões de recomendação abaixo da resposta para suas necessidades personalizadas no DSH: quando você quer uma página ou uma pequena ferramenta para manter, propõe uma nova página personalizada, gerada em segundo plano depois que você clica em Criar; quando você pergunta como fazer algo neste aplicativo ou diz que falta um recurso, recomenda o plug-in integrado que o oferece, ativado quando você clica em Ativar.\",\"ru\":\"Показывает карточки рекомендаций под ответом с учетом ваших индивидуальных потребностей в DSH: когда вам нужна страница или небольшой инструмент для постоянного использования, предлагает новую персональную страницу, которая создается в фоне после нажатия «Создать»; когда вы спрашиваете, как что-то сделать в этом приложении, или говорите, что не хватает какой-то возможности, рекомендует встроенный плагин, который ее предоставляет, и включает его после нажатия «Включить».\",\"zh\":\"针对你对 DSH 的个性化需求，在回答下方展示推荐卡片：想要能长期使用的页面或小工具时，提议新增个性化页面，点击创建后在后台生成；问到本应用怎么做某件事或缺少某项能力时，推荐对应的内置插件，点击启用后开启。\"},\"enabled\":true},{\"name\":\"@deepseek-ai/dsh-experimental-agent-team-profile\",\"title\":{\"en\":\"Agent teams\",\"de\":\"Agententeams\",\"es\":\"Equipos de agentes\",\"fr\":\"Équipes d'agents\",\"ja\":\"エージェントチーム\",\"pt\":\"Equipes de agentes\",\"ru\":\"Команды агентов\",\"zh\":\"智能体团队\"},\"description\":{\"en\":\"Lets the agent you talk to split a job among named teammates, track it on a shared task board, and report back with their results.\",\"de\":\"Ermöglicht dem Agenten, mit dem Sie sprechen, eine Aufgabe auf benannte Teammitglieder aufzuteilen, sie auf einem gemeinsamen Aufgabenboard zu verfolgen und Ihnen mit deren Ergebnissen zu berichten.\",\"es\":\"Permite que el agente con el que habla reparta un trabajo entre compañeros con nombre, lo siga en un tablero de tareas compartido y le informe con sus resultados.\",\"fr\":\"Permet à l'agent avec lequel vous parlez de répartir un travail entre des coéquipiers nommés, de le suivre sur un tableau de tâches partagé et de vous rendre compte de leurs résultats.\",\"ja\":\"対話しているエージェントが、仕事を名前付きのチームメイトに分担させ、共有タスクボードで進捗を追跡し、チームメイトの結果をまとめて報告します。\",\"pt\":\"Permite que o agente com quem você conversa divida um trabalho entre colegas de equipe nomeados, acompanhe-o em um quadro de tarefas compartilhado e informe você com os resultados deles.\",\"ru\":\"Позволяет агенту, с которым вы общаетесь, распределить работу между именованными участниками команды, отслеживать её на общей доске задач и отчитываться перед вами об их результатах.\",\"zh\":\"让与你对话的智能体把工作分给有名字的队友，在共享任务看板上跟踪进度，并汇总队友的结果向你汇报。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-inspector-profile\",\"title\":{\"en\":\"Developer tools\",\"de\":\"Entwicklertools\",\"es\":\"Herramientas de desarrollador\",\"fr\":\"Outils de développement\",\"ja\":\"開発者ツール\",\"pt\":\"Ferramentas de desenvolvedor\",\"ru\":\"Инструменты разработчика\",\"zh\":\"开发者工具\"},\"description\":{\"en\":\"For troubleshooting: view what DSH recorded for a session in Session log, inspect per-turn and per-step statistics in the Statistics tab, and debug the DSH backend in Chrome DevTools.\",\"de\":\"Zur Fehlersuche: Sehen Sie in „Sitzungsprotokoll“, was DSH für eine Sitzung aufgezeichnet hat, prüfen Sie im Tab „Statistik“ Kontext, Dauer, Cache und Werkzeugkosten pro Runde und Schritt und debuggen Sie das DSH-Backend in Chrome DevTools.\",\"es\":\"Para solucionar problemas: vea en «Registro de sesión» lo que DSH registró de una sesión, consulte el contexto, los tiempos, la caché y el coste de herramientas por turno y paso en la pestaña «Estadísticas», y depure el backend de DSH en Chrome DevTools.\",\"fr\":\"Pour le dépannage : consultez dans « Journal de session » ce que DSH a enregistré pour une session, examinez le contexte, les durées, le cache et le coût des outils par tour et étape dans l’onglet « Statistiques », et déboguez le backend de DSH dans Chrome DevTools.\",\"ja\":\"トラブルシューティング用です。「セッションログ」で DSH がセッションについて記録した内容を確認し、「統計」タブでターン/ステップごとのコンテキスト、時間、キャッシュ、ツールコストを確認し、Chrome DevTools で DSH バックエンドをデバッグできます。\",\"pt\":\"Para solução de problemas: veja em «Registro da sessão» o que o DSH registrou de uma sessão, consulte contexto, tempos, cache e custo de ferramentas por turno e etapa na aba «Estatísticas» e depure o backend do DSH no Chrome DevTools.\",\"ru\":\"Для диагностики: просматривайте в «Журнале сеанса», что DSH записал для сеанса, смотрите контекст, время, кэш и стоимость инструментов по ходам и шагам на вкладке «Статистика» и отлаживайте бэкенд DSH в Chrome DevTools.\",\"zh\":\"用于排查问题：在「会话数据诊断」中查看 DSH 为会话记录的内容，在「统计」页签查看每轮/每步的上下文、耗时、缓存和工具成本，并在 Chrome DevTools 中调试 DSH 后端。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-voice-input-bundle\",\"title\":{\"en\":\"Voice input\",\"de\":\"Spracheingabe\",\"es\":\"Entrada de voz\",\"fr\":\"Saisie vocale\",\"ja\":\"音声入力\",\"pt\":\"Entrada de voz\",\"ru\":\"Голосовой ввод\",\"zh\":\"语音输入\"},\"description\":{\"en\":\"Transcribe recordings locally with SenseVoice; first use requires installing dependencies.\",\"de\":\"Transkribieren Sie Aufnahmen lokal mit SenseVoice; Für die erste Verwendung müssen Abhängigkeiten installiert werden.\",\"es\":\"Transcribe grabaciones localmente con SenseVoice; El primer uso requiere instalar dependencias.\",\"fr\":\"Transcrivez les enregistrements localement avec SenseVoice ; la première utilisation nécessite l'installation de dépendances.\",\"ja\":\"ローカルの SenseVoice で録音を文字に起こします。初回利用時には依存関係のインストールが必要です。\",\"pt\":\"Transcreva gravações localmente com SenseVoice; o primeiro uso requer a instalação de dependências.\",\"ru\":\"Транскрибируйте записи локально с помощью SenseVoice; при первом использовании требуется установка зависимостей.\",\"zh\":\"在本机使用 SenseVoice 转写录音，首次使用需安装依赖。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-auto-review\",\"title\":{\"en\":\"Auto authorization review\",\"de\":\"Automatische Autorisierungsüberprüfung\",\"es\":\"Revisión de autorización automática\",\"fr\":\"Examen des autorisations automatiques\",\"ja\":\"自動認可レビュー\",\"pt\":\"Revisão de autorização automática\",\"ru\":\"Проверка автоматической авторизации\",\"zh\":\"自动授权审查\"},\"description\":{\"en\":\"Adds an Auto review access mode: before each tool call, a model checks it against what you asked for, runs allowed calls at once, and holds denied calls for your approval.\",\"de\":\"Fügt den Zugriffsmodus „Auto review“ hinzu: Vor jedem Tool-Aufruf prüft ein Modell den Aufruf anhand Ihrer Anforderung; zugelassene Aufrufe laufen sofort, abgelehnte Aufrufe warten auf Ihre Genehmigung.\",\"es\":\"Añade el modo de acceso “Auto review”: antes de cada llamada a una herramienta, un modelo comprueba la llamada frente a lo que usted pidió; las llamadas permitidas se ejecutan de inmediato y las denegadas esperan su aprobación.\",\"fr\":\"Ajoute le mode d'accès « Auto review » : avant chaque appel d'outil, un modèle vérifie l'appel par rapport à ce que vous avez demandé ; les appels autorisés s'exécutent immédiatement et les appels refusés attendent votre approbation.\",\"ja\":\"「自動認可レビュー」アクセスモードを追加します。各ツール呼び出しの前に、モデルがその呼び出しをあなたの依頼内容と照らし合わせて確認し、許可された呼び出しは即座に実行され、拒否された呼び出しはあなたの承認を待ちます。\",\"pt\":\"Adiciona o modo de acesso “Auto review”: antes de cada chamada de ferramenta, um modelo verifica a chamada em relação ao que você pediu; as chamadas permitidas são executadas imediatamente e as negadas aguardam sua aprovação.\",\"ru\":\"Добавляет режим доступа «Auto review»: перед каждым вызовом инструмента модель сверяет вызов с вашей просьбой; разрешённые вызовы выполняются сразу, а отклонённые ждут вашего одобрения.\",\"zh\":\"提供“自动审查”访问模式：每次工具调用前，由模型对照你的要求检查，获准的调用立即运行，被拒绝的调用等你审批。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-cot-translation-bundle\",\"title\":{\"en\":\"Machine translation of reasoning\",\"de\":\"Maschinelle Übersetzung der Argumentation\",\"es\":\"Traducción automática de razonamiento\",\"fr\":\"Traduction automatique du raisonnement\",\"ja\":\"思考内容の機械翻訳\",\"pt\":\"Tradução automática de raciocínio\",\"ru\":\"Машинный перевод рассуждений\",\"zh\":\"思考过程机器翻译\"},\"description\":{\"en\":\"Translates expanded Think rows into your chosen language as the agent writes them, and View original switches back.\",\"de\":\"Übersetzt aufgeklappte „Denken Sie nach“-Zeilen, während der Agent sie schreibt, in die von Ihnen gewählte Sprache, und „Original ansehen“ wechselt zurück.\",\"es\":\"Traduce las filas “pensar” expandidas al idioma que elija mientras el agente las escribe, y “Ver original” vuelve al texto original.\",\"fr\":\"Traduit les lignes « Pensez » développées dans la langue de votre choix pendant que l'agent les écrit, et « Voir l'original » permet de revenir au texte d'origine.\",\"ja\":\"エージェントが書き出すのと同時に、展開された「思考」行を選択した言語に翻訳します。「原文を表示」で原文に戻せます。\",\"pt\":\"Traduz as linhas “Pense” expandidas para o idioma que você escolher enquanto o agente as escreve, e “Ver original” volta ao texto original.\",\"ru\":\"Переводит развёрнутые строки «Подумайте» на выбранный вами язык по мере того, как агент их пишет, а «Посмотреть оригинал» возвращает исходный текст.\",\"zh\":\"智能体输出时，把展开的“思考”行翻译成你选择的语言，点击“查看原文”可切换回原文。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-badge-skill-bundle\",\"title\":{\"en\":\"DSH badge skill\",\"de\":\"DSH-Abzeichen-Fertigkeit\",\"es\":\"Habilidad de insignia DSH\",\"fr\":\"Compétence du badge DSH\",\"ja\":\"DSH バッジスキル\",\"pt\":\"DSH habilidade de distintivo\",\"ru\":\"DSH значок навыка\",\"zh\":\"DSH 徽章技能\"},\"description\":{\"en\":\"Let agents add a “powered by dsh” badge to documents, pull requests, and other outputs.\",\"de\":\"Lassen Sie Agenten Dokumente, Pull-Requests und andere Ausgaben mit einem „powered by dsh“-Badge versehen.\",\"es\":\"Permita que los agentes agreguen una insignia \\\"con tecnología de dsh\\\" a documentos, solicitudes de extracción y otros resultados.\",\"fr\":\"Laissez les agents ajouter un badge « propulsé par dsh » aux documents, demandes d'extraction et autres sorties.\",\"ja\":\"エージェントが文書や PR などの成果物に「powered by dsh」バッジを追加できます。\",\"pt\":\"Permita que os agentes adicionem um selo “powered by dsh” a documentos, pull requests e outros resultados.\",\"ru\":\"Позвольте агентам добавлять значок «Powered by dsh» к документам, запросам на включение и другим результатам.\",\"zh\":\"让 Agent 为文档、PR 等产出添加「powered by dsh」徽章。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-ralph-bundle\",\"title\":{\"en\":\"Ralph loops\",\"de\":\"Ralph-Loops\",\"es\":\"Bucles de Ralph\",\"fr\":\"Boucles Ralph\",\"ja\":\"Ralph ループ\",\"pt\":\"Loops de Ralph\",\"ru\":\"Ральф петли\",\"zh\":\"Ralph 循环\"},\"description\":{\"en\":\"Ask for a Ralph loop with a goal, and the agent starts a fresh agent on it round after round until the goal is met, a blocker is reported, or the round limit is reached.\",\"de\":\"Bitten Sie um eine Ralph-Schleife mit einem Ziel, und der Agent startet Runde um Runde einen neuen Agenten darauf, bis das Ziel erreicht ist, ein Hindernis gemeldet wird oder das Rundenlimit erreicht ist.\",\"es\":\"Pida un bucle Ralph con un objetivo, y el agente inicia un agente nuevo sobre él ronda tras ronda hasta que se cumpla el objetivo, se informe de un bloqueo o se alcance el límite de rondas.\",\"fr\":\"Demandez une boucle Ralph avec un objectif, et l'agent lance un nouvel agent dessus, tour après tour, jusqu'à ce que l'objectif soit atteint, qu'un blocage soit signalé ou que la limite de tours soit atteinte.\",\"ja\":\"目標を指定して Ralph ループを依頼すると、エージェントは、目標が達成されるか、阻害要因が報告されるか、ラウンド数の上限に達するまで、ラウンドごとに新しいエージェントを起動してその目標に取り組ませます。\",\"pt\":\"Peça um loop Ralph com um objetivo, e o agente inicia um novo agente nele rodada após rodada até que o objetivo seja atingido, um bloqueio seja informado ou o limite de rodadas seja alcançado.\",\"ru\":\"Попросите запустить цикл Ralph с целью, и агент будет раунд за раундом запускать для неё нового агента, пока цель не будет достигнута, не будет сообщено о препятствии или не будет достигнут лимит раундов.\",\"zh\":\"要求用 Ralph 循环完成一个目标后，智能体会一轮接一轮地启动新的智能体处理它，直到目标达成、报告受阻或达到轮次上限。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-session-titles-bundle\",\"title\":{\"en\":\"Conversation-following titles\",\"de\":\"Konversationsfolgende Titel\",\"es\":\"Títulos que siguen la conversación\",\"fr\":\"Titres de suivi de conversation\",\"ja\":\"会話に追従するタイトル\",\"pt\":\"Títulos que acompanham conversas\",\"ru\":\"Заголовки, следующие за разговором\",\"zh\":\"随对话更新的标题\"},\"description\":{\"en\":\"Writes a session's title from all of your messages and updates it when the main task changes, instead of only from the first message.\",\"de\":\"Erstellt den Titel einer Sitzung aus all Ihren Nachrichten und aktualisiert ihn, wenn sich die Hauptaufgabe ändert, statt ihn nur aus der ersten Nachricht zu bilden.\",\"es\":\"Escribe el título de una sesión a partir de todos sus mensajes y lo actualiza cuando cambia la tarea principal, en lugar de basarse solo en el primer mensaje.\",\"fr\":\"Rédige le titre d'une session à partir de tous vos messages et le met à jour lorsque la tâche principale change, au lieu de se baser uniquement sur le premier message.\",\"ja\":\"最初のメッセージだけでなく、あなたのすべてのメッセージからセッションのタイトルを作成し、主なタスクが変わったときに更新します。\",\"pt\":\"Escreve o título de uma sessão a partir de todas as suas mensagens e o atualiza quando a tarefa principal muda, em vez de usar apenas a primeira mensagem.\",\"ru\":\"Составляет заголовок сеанса по всем вашим сообщениям и обновляет его при смене основной задачи, а не только по первому сообщению.\",\"zh\":\"根据你的所有消息生成会话标题，并在主要任务变化时更新，而不是只根据第一条消息生成。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-terminal-bundle\",\"title\":{\"en\":\"Persistent terminals\",\"de\":\"Persistente Terminals\",\"es\":\"Terminales persistentes\",\"fr\":\"Terminaux persistants\",\"ja\":\"永続ターミナル\",\"pt\":\"Terminais persistentes\",\"ru\":\"Постоянные терминалы\",\"zh\":\"持久终端\"},\"description\":{\"en\":\"Gives the agent terminals whose processes keep running in the background between tool calls, so it can start a dev server or REPL and come back later to read output or type input.\",\"de\":\"Stellt dem Agenten Terminals bereit, deren Prozesse zwischen Tool-Aufrufen im Hintergrund weiterlaufen, sodass er einen Entwicklungsserver oder eine REPL starten und später zurückkehren kann, um Ausgaben zu lesen oder Eingaben zu tippen.\",\"es\":\"Proporciona al agente terminales cuyos procesos siguen ejecutándose en segundo plano entre llamadas a herramientas, de modo que puede iniciar un servidor de desarrollo o un REPL y volver más tarde para leer la salida o escribir entradas.\",\"fr\":\"Fournit à l'agent des terminaux dont les processus continuent de s'exécuter en arrière-plan d'un appel d'outil à l'autre, afin qu'il puisse lancer un serveur de développement ou un REPL et revenir plus tard lire la sortie ou saisir des entrées.\",\"ja\":\"エージェントにターミナルを提供します。プロセスはツール呼び出し間もバックグラウンドで実行され続けるため、エージェントは開発サーバーや REPL を起動し、後から出力を読んだり入力したりできます。\",\"pt\":\"Fornece ao agente terminais cujos processos continuam em execução em segundo plano entre chamadas de ferramentas, para que ele possa iniciar um servidor de desenvolvimento ou um REPL e voltar depois para ler a saída ou digitar entradas.\",\"ru\":\"Предоставляет агенту терминалы, процессы которых продолжают работать в фоне между вызовами инструментов, поэтому агент может запустить сервер разработки или REPL и позже вернуться, чтобы прочитать вывод или ввести данные.\",\"zh\":\"为智能体提供终端，进程在多次工具调用之间持续在后台运行，因此它可以启动开发服务器或 REPL，稍后再读取输出或继续输入。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-liveshare\",\"title\":{\"en\":\"LiveShare Session Sharing\",\"de\":\"LiveShare-Sitzungsfreigabe\",\"es\":\"Compartir sesión de LiveShare\",\"fr\":\"Partage de session LiveShare\",\"ja\":\"LiveShare セッション共有\",\"pt\":\"Compartilhamento de sessão do LiveShare\",\"ru\":\"Совместный доступ к сеансу LiveShare\",\"zh\":\"LiveShare 会话分享\"},\"description\":{\"en\":\"Share the current Session with a colleague, who can drive it in a browser, edit files inside the granted workspace when the share allows writes, or branch their own Session from the completed history.\",\"de\":\"Teilt die aktuelle Sitzung mit einer Kollegin oder einem Kollegen, die oder der sie im Browser bedienen, bei erlaubten Schreibzugriffen Dateien im freigegebenen Arbeitsbereich bearbeiten oder aus der abgeschlossenen Historie eine eigene Sitzung abzweigen kann.\",\"es\":\"Comparte la sesión actual con un compañero, que puede dirigirla en un navegador, editar archivos dentro del espacio de trabajo concedido cuando el recurso compartido permite escritura, o crear su propia sesión a partir del historial completado.\",\"fr\":\"Partagez la session en cours avec un collègue, qui peut la piloter dans un navigateur, modifier des fichiers dans l'espace de travail accordé lorsque le partage autorise l'écriture, ou créer sa propre session à partir de l'historique terminé.\",\"ja\":\"現在のセッションを同僚と共有し、ブラウザから操作してもらう、共有が書き込みを許可する場合は付与されたワークスペース内のファイルを編集してもらう、または完了した履歴から自分のセッションを分岐してもらえます。\",\"pt\":\"Compartilhe a sessão atual com um colega, que pode conduzi-la no navegador, editar arquivos dentro do espaço de trabalho concedido quando o compartilhamento permite escrita, ou ramificar a própria sessão a partir do histórico concluído.\",\"ru\":\"Поделитесь текущим сеансом с коллегой: он сможет управлять им в браузере, редактировать файлы в предоставленном рабочем пространстве, если общий доступ разрешает запись, или ответвить собственный сеанс из завершённой истории.\",\"zh\":\"把当前会话分享给同事，对方可在浏览器中驱动该会话、在分享允许写入时修改授权工作区内的文件，或从已完成历史分支出自己的会话。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-session-search\",\"title\":{\"en\":\"Session search\",\"de\":\"Sitzungssuche\",\"es\":\"búsqueda de sesión\",\"fr\":\"Recherche de sessions\",\"ja\":\"セッション検索\",\"pt\":\"Pesquisa de sessão\",\"ru\":\"Поиск сеанса\",\"zh\":\"会话搜索\"},\"description\":{\"en\":\"Ask about earlier work, such as “How did we fix the pool leak last week?”, and the agent searches your earlier sessions in the same workspace to answer.\",\"de\":\"Fragen Sie nach früherer Arbeit, etwa „Wie haben wir letzte Woche das Pool-Leck behoben?“, und der Agent durchsucht Ihre früheren Sitzungen aus demselben Arbeitsverzeichnis, um zu antworten.\",\"es\":\"Pregunte por trabajo anterior, como “¿Cómo arreglamos la fuga del pool la semana pasada?”, y el agente busca en sus sesiones anteriores del mismo directorio de trabajo para responder.\",\"fr\":\"Posez une question sur un travail antérieur, par exemple « Comment avons-nous corrigé la fuite du pool la semaine dernière ? », et l'agent recherche dans vos sessions antérieures du même répertoire de travail pour répondre.\",\"ja\":\"「先週プールのリークをどう直した？」のように以前の作業について尋ねると、エージェントは同じ作業ディレクトリの過去のセッションを検索して回答します。\",\"pt\":\"Pergunte sobre trabalhos anteriores, como “Como corrigimos o vazamento do pool na semana passada?”, e o agente pesquisa suas sessões anteriores do mesmo diretório de trabalho para responder.\",\"ru\":\"Спросите о прошлой работе, например «Как мы исправили утечку в пуле на прошлой неделе?», и агент выполнит поиск по вашим прошлым сеансам из того же рабочего каталога, чтобы ответить.\",\"zh\":\"询问以往的工作，例如“上周我们是怎么修好连接池泄漏的？”，智能体会搜索同一工作区的历史会话来回答。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-tool-worktree\",\"title\":{\"en\":\"Git worktrees\",\"de\":\"Git-Arbeitsbäume\",\"es\":\"árboles de trabajo de git\",\"fr\":\"Arbres de travail Git\",\"ja\":\"Git ワークツリー\",\"pt\":\"Árvores de trabalho Git\",\"ru\":\"Рабочие деревья Git\",\"zh\":\"Git 工作树\"},\"description\":{\"en\":\"Ask for work on a new branch, and the agent creates a separate Git worktree and continues there, leaving your current checkout as it is.\",\"de\":\"Bitten Sie um Arbeit auf einem neuen Branch, und der Agent erstellt einen separaten Git-Worktree und arbeitet dort weiter, während Ihr aktueller Checkout unverändert bleibt.\",\"es\":\"Pida trabajar en una rama nueva, y el agente crea un worktree de Git independiente y continúa allí, dejando su checkout actual tal como está.\",\"fr\":\"Demandez à travailler sur une nouvelle branche, et l'agent crée un worktree Git distinct et y poursuit le travail, en laissant votre copie de travail actuelle telle quelle.\",\"ja\":\"新しいブランチでの作業を依頼すると、エージェントは別の Git ワークツリーを作成してそこで作業を続け、現在のチェックアウトはそのまま残します。\",\"pt\":\"Peça para trabalhar em um novo branch, e o agente cria um worktree do Git separado e continua lá, deixando seu checkout atual como está.\",\"ru\":\"Попросите поработать в новой ветке, и агент создаст отдельное рабочее дерево Git и продолжит работу там, оставив вашу текущую рабочую копию как есть.\",\"zh\":\"要求在新分支上工作时，智能体会创建单独的 Git 工作树并在其中继续，你当前的工作树保持原样。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-plugin-market-bundle\",\"title\":{\"en\":\"Custom plugin indexes\",\"de\":\"Benutzerdefinierte Plugin-Indizes\",\"es\":\"Índices de complementos personalizados\",\"fr\":\"Index de plugins personnalisés\",\"ja\":\"カスタムプラグインインデックス\",\"pt\":\"Índices de plug-ins personalizados\",\"ru\":\"Пользовательские индексы плагинов\",\"zh\":\"自定义插件索引\"},\"description\":{\"en\":\"Adds a Discover tab to Plugins, where you browse and install plugins from plugin indexes you add.\",\"de\":\"Fügt unter „Plugins“ den Tab „Entdecken“ hinzu, in dem Sie Plugins aus von Ihnen hinzugefügten Plugin-Indizes durchsuchen und installieren.\",\"es\":\"Añade la pestaña “Descubrir” a “Complementos”, donde puede explorar e instalar complementos de los índices de complementos que agregue.\",\"fr\":\"Ajoute à « Plugins » un onglet « Découvrez » où vous parcourez et installez des plugins provenant des index de plugins que vous ajoutez.\",\"ja\":\"「プラグイン」に「見つける」タブを追加し、追加したプラグインインデックスからプラグインを閲覧・インストールできるようにします。\",\"pt\":\"Adiciona a guia “Descubra” a “Plug-ins”, onde você navega e instala plug-ins dos índices de plug-ins que adiciona.\",\"ru\":\"Добавляет в «Плагины» вкладку «Откройте для себя», где можно просматривать и устанавливать плагины из добавленных вами индексов плагинов.\",\"zh\":\"在插件页添加“发现”标签页，从你添加的插件索引中浏览和安装插件。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-experimental-forge-bundle\",\"title\":{\"en\":\"Change requests & worktrees\",\"de\":\"Änderungsanfragen und Arbeitsbäume\",\"es\":\"Solicitudes de cambio y árboles de trabajo\",\"fr\":\"Demandes de modification et arbres de travail\",\"ja\":\"変更リクエストとワークツリー\",\"pt\":\"Solicitações de alteração e árvores de trabalho\",\"ru\":\"Запросы на изменение и рабочие деревья\",\"zh\":\"变更请求与工作树\"},\"description\":{\"en\":\"Track each Session's change requests with their checks and reviews, and start new Sessions in a Git worktree; uses the gh CLI for GitHub.\",\"de\":\"Verfolgen Sie die Änderungsanfragen jeder Sitzung mit ihren Prüfungen und Reviews und starten Sie neue Sitzungen in einem Git-Arbeitsbaum; nutzt die gh CLI für GitHub.\",\"es\":\"Siga las solicitudes de cambio de cada sesión con sus comprobaciones y revisiones, e inicie nuevas sesiones en un árbol de trabajo de Git; usa la CLI gh para GitHub.\",\"fr\":\"Suivez les demandes de modification de chaque session avec leurs vérifications et revues, et démarrez de nouvelles sessions dans un arbre de travail Git ; utilise la CLI gh pour GitHub.\",\"ja\":\"各セッションの変更リクエストとそのチェックやレビューを追跡し、新しいセッションを Git ワークツリーで開始できます。GitHub には gh CLI を使用します。\",\"pt\":\"Acompanhe as solicitações de alteração de cada sessão com suas verificações e revisões e inicie novas sessões em uma árvore de trabalho Git; usa a CLI gh para o GitHub.\",\"ru\":\"Отслеживайте запросы на изменение каждого сеанса вместе с их проверками и ревью и начинайте новые сеансы в рабочем дереве Git; для GitHub используется gh CLI.\",\"zh\":\"跟踪每个会话的变更请求及其检查与评审，新会话也可以在 Git 工作树中开始；GitHub 通过 gh 命令行访问。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-subagent-claude-code\",\"title\":{\"de\":\"Claude Code-Subagent\",\"en\":\"Claude Code subagent\",\"es\":\"Subagente Claude Code\",\"fr\":\"Sous-agent Claude Code\",\"ja\":\"Claude Code サブエージェント\",\"pt\":\"Claude Code subagente\",\"ru\":\"Субагент Claude Code\",\"zh\":\"Claude Code 子智能体\"},\"description\":{\"de\":\"Delegieren Sie eine Aufgabe an Claude Code, indem Sie dessen native Authentifizierung und Einstellungen verwenden.\",\"en\":\"Delegate one task to Claude Code using its native authentication and settings.\",\"es\":\"Delegue una tarea a Claude Code utilizando su autenticación y configuración nativas.\",\"fr\":\"Déléguez une tâche à Claude Code à l’aide de son authentification et de ses paramètres natifs.\",\"ja\":\"Claude Code のネイティブの認証と設定を使用して、単独のタスクを委派します。\",\"pt\":\"Delegue uma tarefa a Claude Code usando sua autenticação e configurações nativas.\",\"ru\":\"Делегируйте одну задачу Claude Code, используя его встроенную аутентификацию и настройки.\",\"zh\":\"使用 Claude Code 原生认证和设置委派单个任务。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-subagent-codex\",\"title\":{\"de\":\"Codex-Subagent\",\"en\":\"Codex subagent\",\"es\":\"Subagente Codex\",\"fr\":\"Sous-agent Codex\",\"ja\":\"Codex サブエージェント\",\"pt\":\"Codex subagente\",\"ru\":\"Субагент Codex\",\"zh\":\"Codex 子智能体\"},\"description\":{\"de\":\"Delegieren Sie eine Aufgabe an Codex, indem Sie dessen native Authentifizierung und Einstellungen verwenden.\",\"en\":\"Delegate one task to Codex using its native authentication and settings.\",\"es\":\"Delegue una tarea a Codex utilizando su autenticación y configuración nativas.\",\"fr\":\"Déléguez une tâche à Codex à l’aide de son authentification et de ses paramètres natifs.\",\"ja\":\"Codex のネイティブの認証と設定を使用して、単独のタスクを委派します。\",\"pt\":\"Delegue uma tarefa a Codex usando sua autenticação e configurações nativas.\",\"ru\":\"Делегируйте одну задачу Codex, используя его встроенную аутентификацию и настройки.\",\"zh\":\"使用 Codex 原生认证和设置委派单个任务。\"},\"enabled\":false},{\"name\":\"@deepseek-ai/dsh-cua-bundle\",\"title\":{\"de\":\"Computernutzung\",\"en\":\"Computer use\",\"es\":\"Uso de la computadora\",\"fr\":\"Utilisation de l'ordinateur\",\"ja\":\"Computer Use\",\"pt\":\"Uso do computador\",\"ru\":\"Использование компьютера\",\"zh\":\"Computer Use\"},\"description\":{\"de\":\"Unterstützt derzeit macOS; Die Windows-Unterstützung befindet sich in der Entwicklung. Lädt die Computernutzung für bestehende und neue PTC-Sitzungen. Wechseln Sie in den PTC-Modus und erteilen Sie die Berechtigungen für Barrierefreiheit und Bildschirmaufzeichnung, um ihn zu verwenden.\",\"en\":\"Currently supports macOS; Windows support is in development. Loads computer use for existing and new PTC sessions. Switch to PTC mode and grant Accessibility and Screen Recording permissions to use it.\",\"es\":\"Actualmente es compatible con macOS; El soporte para Windows está en desarrollo. Carga el uso de la computadora para sesiones PTC nuevas y existentes. Cambie al modo PTC y otorgue permisos de Accesibilidad y Grabación de pantalla para usarlo.\",\"fr\":\"Prend actuellement en charge macOS ; La prise en charge de Windows est en cours de développement. Charge l'utilisation de l'ordinateur pour les sessions PTC existantes et nouvelles. Passez en mode PTC et accordez les autorisations d’accessibilité et d’enregistrement d’écran pour l’utiliser.\",\"ja\":\"現在は macOS のみ対応し、Windows 対応は開発中です。既存および新規の PTC セッションに Computer Use を読み込みます。PTC モードに切り替え、アクセシビリティと画面収録の権限を許可して使用してください。\",\"pt\":\"Atualmente suporta macOS; O suporte Windows está em desenvolvimento. Carrega o uso do computador para sessões PTC novas e existentes. Mude para o modo PTC e conceda permissões de acessibilidade e gravação de tela para usá-lo.\",\"ru\":\"В настоящее время поддерживается macOS; Поддержка Windows находится в разработке. Загружает использование компьютера для существующих и новых сеансов PTC. Переключитесь в режим PTC и предоставьте разрешения на доступность и запись экрана для его использования.\",\"zh\":\"目前仅支持 macOS，Windows 支持正在开发中。为已有及新建 PTC 会话加载 Computer Use。请切换到 PTC 模式来使用，并授予辅助功能和屏幕录制权限。\"},\"enabled\":false}]\n</skill_instructions>\n</skill_content>"}],"isError":false,"id":"{{message:7}}"}},"sourceEventSeqs":[16],"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":1,"step":1}}
 {"type":"step/start","data":{"turn":1,"step":2}}
 {"type":"request/header","data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash"},"tools":["ask_user_question","bash","create_goal","edit","get_goal","glob","grep","interrupt_agent","job_kill","job_list","job_output","list_agents","list_subagent_models","plugin_manager","present","propose_action","read","read_image","schedule_create","schedule_delete","schedule_list","schedule_update","send_message","skill","subagent","subagent_fork","todo_write","update_goal","web_fetch","web_search","workflow","working_directory","write"]},"reason":"change"}}
diff --git a/snapshots/web/details-session-lifecycle/sidebar.expected.md b/snapshots/web/details-session-lifecycle/sidebar.expected.md
index 9ae98ff006..f205ed9765 100644
--- a/snapshots/web/details-session-lifecycle/sidebar.expected.md
+++ b/snapshots/web/details-session-lifecycle/sidebar.expected.md
@@ -417,8 +417,8 @@
     1000
   ],
   "columns": [
-    56,
-    711,
+    0,
+    767,
     0
   ],
   "columnTransition": "none",
diff --git a/tsconfig.base.json b/tsconfig.base.json
index 5a83a44109..6f590ff7ab 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -28,6 +28,11 @@
     // not declaration path aliases, keep each package/vendor source compiled
     // under its own tsconfig boundary.
     "paths": {
+      "@deepseek-ai/dsh-client-ui-file-actions": ["./packages/client/ui-file-actions/src/index.ts"],
+      "@deepseek-ai/dsh-client-ui-file-actions/client": ["./packages/client/ui-file-actions/src/client/index.ts"],
+      "@deepseek-ai/dsh-client-ui-file-actions/types": ["./packages/client/ui-file-actions/src/types.ts"],
+      "@deepseek-ai/dsh-client-ui-context-menu": ["./packages/client/ui-context-menu/src/index.ts"],
+      "@deepseek-ai/dsh-client-ui-context-menu/client": ["./packages/client/ui-context-menu/src/client/index.ts"],
       "@deepseek-ai/dsh-client-ui-entry-customization": ["./packages/client/ui-entry-customization/src/index.ts"],
       "@deepseek-ai/dsh-client-ui-entry-customization/client": ["./packages/client/ui-entry-customization/src/client/index.ts"],
       "@deepseek-ai/dsh-client-ui-entry-customization/src/*": ["./packages/client/ui-entry-customization/src/*"],
@@ -386,6 +391,9 @@
       "@deepseek-ai/dsh-experimental-session-inspector": ["./packages/experimental/session-inspector/src"],
       "@deepseek-ai/dsh-experimental-session-inspector/client": ["./packages/experimental/session-inspector/src/client/index.ts"],
       "@deepseek-ai/dsh-experimental-inspector/client": ["./packages/experimental/inspector/src/client/index.ts"],
+      "@deepseek-ai/dsh-experimental-liveshare": ["./packages/experimental/liveshare/src"],
+      "@deepseek-ai/dsh-experimental-liveshare/client": ["./packages/experimental/liveshare/src/client/index.ts"],
+      "@deepseek-ai/dsh-experimental-liveshare/viewer-declarations": ["./packages/experimental/liveshare/src/viewer-declarations.ts"],
       "@deepseek-ai/dsh-experimental-liveshare-protocol": ["./packages/experimental/liveshare-protocol/src"],
       "@deepseek-ai/dsh-experimental-ptc-runtime-python": ["./packages/experimental/ptc-runtime-python/src"],
       "@deepseek-ai/dsh-util-crypto": ["./packages/util/crypto/src"],
diff --git a/tsconfig.client.json b/tsconfig.client.json
index 154698279b..8ef965c8ba 100644
--- a/tsconfig.client.json
+++ b/tsconfig.client.json
@@ -90,6 +90,7 @@
     { "path": "./packages/client/modules" },
     { "path": "./packages/experimental/inspector/tsconfig.client.json" },
     { "path": "./packages/experimental/liveshare-protocol/tsconfig.client.json" },
+    { "path": "./packages/experimental/liveshare/tsconfig.client.json" },
     { "path": "./packages/experimental/session-inspector" },
     { "path": "./packages/experimental/client-ui-forge/tsconfig.client.json" },
     { "path": "./packages/client/hmr" },
@@ -108,6 +109,8 @@
     { "path": "./packages/test-support/tool-testkit" },
     { "path": "./packages/client/shortcuts/tsconfig.client.json" },
     { "path": "./packages/client/ui-shortcuts" },
+    { "path": "./packages/client/ui-context-menu" },
+    { "path": "./packages/client/ui-file-actions" },
     { "path": "./packages/client/ui-layout" },
     { "path": "./packages/client/ui-sidebar" },
     { "path": "./packages/client/ui-brand-official" },
diff --git a/tsconfig.host.json b/tsconfig.host.json
index e90e4c56b4..2056c391f2 100644
--- a/tsconfig.host.json
+++ b/tsconfig.host.json
@@ -8,6 +8,7 @@
     "rewriteRelativeImportExtensions": false
   },
   "include": [
+    "apps/web/tests/sidebar-drawer.e2e.ts",
     "apps/web/tests/creation-recommendations.e2e.ts",
     "apps/web/tests/plugin-recommendations.e2e.ts",
     "apps/web/tests/japanese-plugin-metadata.e2e.ts",
@@ -105,6 +106,7 @@
     "apps/web/tests/plugin-hmr-lifecycle.e2e.ts",
     "apps/web/tests/plugin-install-registry.e2e.ts",
     "apps/web/tests/plugin-install-github.e2e.ts",
+    "apps/web/tests/plugin-install-silent-failure.e2e.ts",
     "apps/web/tests/client-plugin-live.e2e.ts",
     "apps/web/tests/icon-skin.e2e.ts",
     "apps/web/tests/draft-initialization.e2e.ts",
@@ -201,6 +203,7 @@
     "apps/web/tests/startup-auto-selection.e2e.ts",
     "apps/web/tests/changed-files-turn.e2e.ts",
     "apps/web/tests/produced-file-mentions.e2e.ts",
+    "apps/web/tests/context-menus.e2e.ts",
     "apps/web/tests/subagent-conversation.e2e.ts",
     "apps/web/tests/subagent-interrupt.e2e.ts",
     "apps/web/tests/subagent-interrupt-ui.e2e.ts",
@@ -543,6 +546,7 @@
     { "path": "./packages/experimental/agent-team-profile" },
     { "path": "./packages/experimental/inspector-profile" },
     { "path": "./packages/experimental/liveshare-protocol/tsconfig.host.json" },
+    { "path": "./packages/experimental/liveshare/tsconfig.host.json" },
     { "path": "./packages/experimental/tool-agent-team" },
     { "path": "./packages/workflow/workflow" },
     { "path": "./packages/workflow/workflow-ptc" },
diff --git a/vendor/README.md b/vendor/README.md
index 53b89254c0..e5929e416a 100644
--- a/vendor/README.md
+++ b/vendor/README.md
@@ -16,7 +16,7 @@ Upstream workspace: `cordis-workspace` (local checkout: `~/repos/cordis-workspac
 |---|---|---|---|---|---|
 | `cosmokit/` | `@deepseek-ai/cosmokit` | `cosmokit` | 1.8.1 | https://github.com/deepseek-harness/cosmokit | `16f6fc058ade66e8ac5da0033d35a8d0f279f544` |
 | `schemastery/` | `@deepseek-ai/schemastery` | `schemastery` | 3.18.0 | https://github.com/deepseek-harness/schemastery (`packages/core`) | `e67cee00ad725bd1534aee930a979ea3eec6f698` |
-| `cordis/` | `@deepseek-ai/cordis` | `cordis` | 4.0.0-rc.7 | https://github.com/cordiverse/cordis (`packages/core`) | `56b3d4f725681cf4556c1a8695a709cc3b6eed74` |
+| `cordis/` | `@deepseek-ai/cordis` | `cordis` | 4.0.0-rc.11 | https://github.com/cordiverse/cordis (`packages/core`) | `0b96d9fd517b998e44e2209560c9e5f0671ce933` |
 | `loader/` | `@deepseek-ai/cordis-plugin-loader` | `@cordisjs/plugin-loader` | 1.0.0-rc.5 | https://github.com/cordiverse/cordis (`packages/loader`) | `56b3d4f725681cf4556c1a8695a709cc3b6eed74` |
 | `include/` | `@deepseek-ai/cordis-plugin-include` | `@cordisjs/plugin-include` | 1.0.4 | https://github.com/deepseek-harness/cordis (`packages/include`) | `abb0a307cb1d3b0947f455d590cf5ba922d4caa4` |
 | `group/` | `@deepseek-ai/cordis-plugin-group` | `@cordisjs/plugin-group` | 1.0.0 | https://github.com/deepseek-harness/cordis (`packages/group`) | `abb0a307cb1d3b0947f455d590cf5ba922d4caa4` |
@@ -24,7 +24,7 @@ Upstream workspace: `cordis-workspace` (local checkout: `~/repos/cordis-workspac
 | `hmr/` | `@deepseek-ai/cordis-plugin-hmr` | `@cordisjs/plugin-hmr` | 1.0.15 | https://github.com/deepseek-harness/cordis (`packages/hmr`) | `abb0a307cb1d3b0947f455d590cf5ba922d4caa4` |
 | `logger-console/` | `@deepseek-ai/cordis-plugin-logger-console` | `@cordisjs/plugin-logger-console` | 1.0.0 | https://github.com/deepseek-harness/cordis (`packages/logger-console`) | `abb0a307cb1d3b0947f455d590cf5ba922d4caa4` |
 
-**Partial Loader sync:** the package baseline remains 1.0.0-rc.5. `loader/src/resolve.ts` and the bare-specifier fallback in `loader/src/config/tree.ts` use the resolver implementation from Cordis `v4.0.0-rc.11` (Loader 1.0.0-rc.8). The [resolver adaptations](#resolver-adaptations) below record the local differences from that newer source.
+**Partial Loader sync:** the package baseline remains 1.0.0-rc.5. `loader/src/resolve.ts` and the bare-specifier fallback in `loader/src/config/tree.ts` use the resolver implementation from Cordis `v4.0.0-rc.11` (Loader 1.0.0-rc.8), and `loader/src/internal.ts` uses its runtime API detection, which classifies the internal module loader by its available module-job APIs instead of the Node major version; the Node compatibility matrix covers the detection. The [resolver adaptations](#resolver-adaptations) below record the local differences from that newer source.
 
 Third-party dependencies of the vendored packages stay on npm: `@standard-schema/spec`, `js-yaml`, `chokidar`, `picomatch`, `@babel/code-frame`, `supports-color`, `node-addon-require-builtin`.
 
@@ -32,37 +32,28 @@ Intentionally **not** vendored (verified unused by this set): `reggol`, `@cordis
 
 ## Local modifications
 
-Keep this log exhaustive — every divergence from upstream must be listed.
-
-1. **`hmr/src/index.ts`**: removed the `./locales/en-US.yml` / `./locales/zh-CN.yml` imports, the `.i18n({...})` call on the `Config` schema, and the `src/locales/` directory. Rationale: those imports require a runtime YAML loader hook (`@cordisjs/unyaml`) that we do not vendor; the i18n texts only localize config descriptions.
-2. **All `package.json` files**: regenerated for Harness releases with scoped names, release versions, publication metadata, precise bundled-runtime and `lib/types/**/*.d.ts` / `.d.ts.map` file entries, source exports where applicable, and declaration metadata pointing at `lib/types`. References within the vendored set use `workspace:~`. HMR declares `esbuild` as a direct dev dependency for its imported `BuildFailure` type, and Loader requires `node-addon-require-builtin@^0.1.4` to match published app runtimes.
-3. **All `tsconfig.json` files**: regenerated to extend the repo-root `tsconfig.base.json`, emit TypeScript intermediates to `lib/types`, and declare project references.
-4. **Vendored TypeScript source internal specifiers**: changed local relative imports/exports from upstream's specifier shape to explicit `.ts` specifiers so TypeScript rewrites emitted JS to `.js` while declarations keep explicit, NodeNext-safe `.ts` specifiers. This includes `loader/src/config/isolate.ts` using `declare module './entry.ts'`. Type-only dependencies use `import type` or inline `type` modifiers so ESM output does not retain erased interfaces.
-5. **`schemastery/tsdown.config.ts` and `logger-console/tsdown.config.ts`**: ours, not upstream files — per-package build-shape overrides (dual ESM+CJS output; separate node/browser entries) for the repo-root tsdown build. They read the JS emitted under `lib/types` and then write the publish runtime entries under `lib/`. Like the regenerated tsconfigs, they are not part of the upstream sync surface.
-6. **`cordis/src/fiber.ts` lifecycle hardening**: locally closes three reentrant disposal gaps. An effect's owner-list wrapper is registered before its setup body runs, so an unload begun from inside setup awaits setup and every collected cleanup; synchronous setup failure removes the wrapper and rolls back collected cleanup. Async cleanup stays owner-visible until quiescence, and Cordis's internal effect composition joins an already-running cleanup while repeated public disposer calls retain their upstream single-shot result. Effect creation is rejected while the owner is `UNLOADING` (while `PENDING` and `LOADING` remain legal), preventing cleanup-time registrations from escaping the unload snapshot. Child fibers register and receive their parent-owned disposer before `internal/plugin` publication, resolve dependency declarations added by that notification before activation, drain effects attached while pending, skip plugin execution when reentrant disposal invalidates the load epoch before its first checkpoint, and contain teardown-notification failures per observer so one callback cannot starve peers or interrupt ownership cleanup.
-7. **Cordis, Loader and Timer JSDoc enrichment**: added `@param`/`@returns` tags and contract documentation (disposal semantics, waterfall veto, bail conditions, error cases) across the public plugin-author surface — `Context` (class, statics, and the `Context` interface properties incl. `root`), module re-exports, shared utility helpers, `EventsService`, `Fiber`, `RegistryService`, `ReflectService`, `Service`, `LoggerService` and their `declare module './context.ts'` overloads. Loader documentation covers `loader/src/{index,internal,config/entry,config/group,config/isolate,config/tree,config/utils}.ts`, including entry ownership, tree mutation methods, and the `!!js` discriminator. Timer retains its local class and helper summaries; its README is local documentation because the upstream package has none. Comment-only; no code changes. Motivation: the website API-reference generator renders these docs and hard-errors on undocumented members. Retire this entry when the enrichment is upstreamed to the fork.
-8. **`include/src/index.ts` resilient file refresh and patch reapplication**: [#514](https://github.com/deepseek-harness/deepseek-harness/pull/514) validates a top-level entry array before caching parsed content, logs refresh failures, reapplies patches after file or Include-config edits, updates the Include config when it vetoes a restart, and uses `initial` only after `ENOENT`. These parse protections retain the running tree after an invalid file; plugin activation failures can leave a partially applied tree. Loader entry/group/tree mutations follow the pinned eager, non-transactional implementation and do not restore previous plugins or options. Covered by `packages/boot/app-boot/tests/{config-reload,user-patches}.spec.ts`.
-9. **`hmr/src/index.ts` module-watcher readiness and native paths**: realpath the existing watch base, classify framework modules and attach listeners before reporting readiness, and compare config paths using both canonical and configured spellings. This preserves Node module-cache identity across Windows short-name paths and filesystem aliases. The main watcher uses `ignoreInitial: true` so startup reads do not trigger another refresh; exact profile patch watching is owned by `packages/boot/hmr/src/watch-config.ts`. Covered by `packages/boot/hmr/tests/watch-config.spec.ts`.
-10. **Vendored Node-compatible TypeScript**: marked erased imports explicitly across `cordis`, `loader`, `include`, `hmr`, and `schemastery` so Node's native TypeScript transform does not request types as runtime exports. Schemastery's source uses an ESM default export and its package declares `type: module`. Conditional exports select `.mjs` for import and `.cjs` for require; without them, concurrent imports under module-hook hosts reach the CJS entry and can race its require of ESM Cosmokit (`ERR_REQUIRE_ESM_RACE_CONDITION`).
-11. **`include/src/index.ts` patch-semantics export**: extracted the private `applyPatches` body into the exported pure function `applyEntryPatches(data, patches, warn)` (the method delegates to it) and exported the `!!js` YAML dialect as `entryListSchema`, so `dsh --dump-config` composes and prints exactly what the include would mount without booting a tree. The entry list is deep-cloned when patches are present; without patches, the returned array retains the entry objects. Public patch and Include fields carry JSDoc for config tooling. Behavior-preserving for mounting; the extraction exists because config tooling must never reimplement (and drift from) the patch algorithm. `applyEntryPatches` also indexes each `insert`ed entry as it is added, so a later patch in the same list can configure or disable a row an earlier patch inserted; upstream built the id index once before the patch loop, leaving inserted rows silently unpatchable. That matters because `dsh` composes an empty profile root with each bundle's patch layer, the profile's and the home-level `cordis.patch.yml`, and any `--patch` overlays as sibling patch lists at one include level — patches never cross an include boundary, so surface-only rows would otherwise be unreachable from user config. Covered by `packages/boot/app-boot/tests/config-reload.spec.ts`.
-12. **`loader/src/config/entry.ts` activation observer**: the detached `Entry.init()` completion observer handles both outcomes; the fiber retains its activation error for explicit consumer audits. Covered by `packages/boot/app-boot/tests/user-patches.spec.ts`.
-13. **`include/src/index.ts` `writeTask` type**: widened the optional `writeTask?: NodeJS.Timeout` property to `NodeJS.Timeout | undefined` — the debounced writer assigns `undefined` on flush, which `exactOptionalPropertyTypes` rejects on a plain optional. Type-only; no behavior change.
-14. **`include/src/index.ts` durable debounced writes**: serialized and tracked config-file writes, retried transient `EACCES`/`EBUSY`/`EPERM` rename failures with a bounded backoff, observed asynchronous timer rejections, and drained writes before and after child removal during Include teardown. The first drain preserves an existing terminal write failure even if child removal schedules a later write. Missing-file initialization awaits the write and forces a fresh parse before mounting the initial entries. Windows can briefly retain a destination handle after a Loader child disposes; the upstream fire-and-forget rename escaped as an unhandled rejection and could lose the persisted `disabled` state. A terminal failure is logged by the asynchronous writer and remains on the queue so `Include.stop()` rethrows it instead of silently declaring persistence complete; Cordis's ordinary fiber teardown retains its separate error-containment contract. Covered by `packages/host/directory-picker-auto/tests/loader-composition.spec.ts` with injected transient and terminal rename failures.
-15. **Lazy Loader config resolution across `cordis/src/{events,fiber}.ts`, `loader/src/{index,config/entry}.ts`, `include/src/index.ts`, and `hmr/src/index.ts`**: ports [cordiverse/cordis#41](https://github.com/cordiverse/cordis/pull/41), retaining raw fiber config and resolving it through `internal/config` only after declared injections are active. Provider replacement re-resolves the raw expression, pending updates retain it, and HMR transfers it. Resolution applies only to the entry root, so child plugins mounted by a row keep caller-owned config identity. Include declares the `EntryGroup.key` tree-carrier marker (as Group does): its config is entry and patch lists, so interpolation keeps it literal and a `!!js` expression inside a nested row's config resolves lazily in that row's own fiber (Include's own `path` therefore stays literal too). Deferred failures retain the owning row diagnostic, and tree teardown does not persist failure-driven self-disposal. `Fiber.rawConfig`, `Fiber.resolveConfig(candidate)` and `Fiber.effectiveConfig` centralize raw retention, candidate evaluation and reads of the lifecycle-published object. Accessors, updates and restarts use the canonical fiber, including calls through registry wrappers; candidate resolution never publishes or commits references. Loader volatile updates, config editing, settings, translator and both HMR providers use these accessors while the existing Core config fields and event protocol remain in place. Covered by `scripts/cordis-config-access.spec.ts`, `packages/boot/app-boot/tests/{app-boot,user-patches}.spec.ts`, `packages/boot/cmdline/tests/cmdline.spec.ts`, `apps/cli/tests/web-agent-presets.e2e.ts`, and the built custom-profile cases in `apps/cli/tests/built-bin.e2e.ts`.
-16. **`cordis/package.json` publishes `src`**: added `src` to the `files` list, joining the other eight vendored packages. Cordis declares `"./src/*": "./src/*"` in its exports, so a tarball without `src` publishes an export map pointing at absent files; the release change judgement also reads `files` to decide whether a diff reaches the payload, and a package whose only published paths are build output has no tracked path to match.
-17. **`@deepseek-ai` rescope**: every vendored manifest `name`, every internal dependency entry among the vendored set, and every module specifier that reaches them use the scoped names in the manifest table's `npm name` column. Directory names, version numbers, and dependency ranges are unchanged, and no upstream runtime identifier is renamed — `Symbol.for('schemastery')` and Schemastery's `vendor:` metadata field keep their upstream values. Re-apply with `pnpm run rescope-vendor --apply` after a sync; the table's two name columns are the mapping, restated for consumers in [docs/rescope.md](../docs/rescope.md).
-18. **Entry `disabled` interpolation in `loader/src/config/entry.ts`**: a `disabled: !!js` expression evaluates against the loader context at every mount decision; the raw node stays in the options, so write-back keeps the `!!js` form. `disabled` is the only interpolated metadata field. Covered by `packages/boot/app-boot/tests/user-patches.spec.ts` and `apps/cli/tests/windows-shell.spec.ts`.
-19. **`loader/src/internal.ts` runtime API detection (upstream in Cordis rc.11)**: classification by available module-job APIs already matches rc.11. It replaces the Node-major check in the pinned Loader rc.5 baseline; no additional detection patch is required when syncing to rc.11. Covered by the Node compatibility matrix.
-
-20. **`loader/src/config/entry.ts` fiber identity**: stores the original fiber from the registry result’s context instead of its PromiseLike wrapper. Configuration updates and service notifications therefore mutate the same lifecycle state; updating a provider and consumer together cannot strand the consumer in `PENDING`. Covered by `packages/boot/hmr/tests/modules.spec.ts` and the built profile reload regression in `apps/cli/tests/built-bin.e2e.ts`.
-
-21. **`cordis/src/logger.ts` exporter disposal**: each disposer retains its registration id, so removing an earlier exporter cannot delete a later console or telemetry exporter. Covered by startup collector cleanup in `packages/boot/app-boot/tests/app-boot.spec.ts` and disabled-feedback output in `packages/session/session-telemetry-otel/tests/loader-composition.e2e.ts`.
-
-22. **Volatile config across `cosmokit`, `schemastery`, `cordis`, and `loader`**: Cosmokit supplies immutable references and framework-owned commits; `deepEqual` treats two references as equal, propagates strict comparison into arrays, compares every array slot with holes treated as undefined, handles cycles conservatively, compares URLs by normalized href, and compares other opaque objects by identity in strict mode. Schemastery adds `.volatile()`, optional/default inference, placement validation without eager lazy-schema expansion (a lazy inner is validated once when built), metadata-free serialized node compatibility, serialized metadata, reference-aware simplification, unsupported volatile values reported as `ValidationError` with their path, and `.default()` accepting the raw input type `Partial<S>` because a volatile field makes the output type carry references. Loader's save path calls `simplify` with its schema receiver (`unparse.call`), an independent fix for the unbound-`this` call. Cordis exports consumer types without changing Fiber lifecycle. Loader compares raw options strictly in `Entry.update`; for a config-only change on an active fiber it calls the pure `equalExceptVolatile` function in `config/diff.ts`, which narrows the Standard Schema to Schemastery's `Schema` type (a new type-only `@deepseek-ai/schemastery` dependency of `loader`) and recursively skips fixed volatile paths using schema metadata without executing config hooks or validation. Missing or null object nodes compare using their declared defaults, including nodes without volatile descendants; schema backedges retain raw comparison. Entry passes its actual schema and preserves ordinary context and custom-update lifecycles. For a volatile-only change, `Entry._commitVolatile` re-parses the raw config through `Fiber.resolveConfig()`, compares ordinary effective values, commits references and emits the instance-local `loader/volatile-update` declared in `loader/src/index.ts`; a changed ordinary effective value falls back to the ordinary remount, and an invalid candidate is logged while the raw config stays retained for the next activation. Cosmokit provides reference enumeration and commits, and `simplify` is called with its schema receiver. The package READMEs document these additions; schema tests live in `scripts/volatile-config.spec.ts`, Loader runtime and real-file tests in `scripts/loader-volatile-update.spec.ts`, and code replacement tests in the HMR module suite.
-
-23. **`loader/src/config/entry.ts` module identity**: retains each entry's raw import result as `moduleNamespace`, before plugin export normalization. HMR matches that object to Node's cached module namespace and updates it after a successful reload. `EntryTree.import()` keeps its existing arguments and return value; `loader/README.md` documents the additive field.
-
-24. **`timer/locale/{en,zh}.json` display metadata**: local English and Chinese titles and descriptions for the Settings plugin inventory. `timer/package.json` exports and publishes these locale resources.
+Keep this log exhaustive — every divergence from upstream must be listed. Each entry has a stable ID: remove an entry when its divergence no longer exists, and never renumber or reuse IDs. The next new entry is V26.
+- **V1 · `hmr/src/index.ts`**: removed the `./locales/en-US.yml` / `./locales/zh-CN.yml` imports, the `.i18n({...})` call on the `Config` schema, and the `src/locales/` directory. Rationale: those imports require a runtime YAML loader hook (`@cordisjs/unyaml`) that we do not vendor; the i18n texts only localize config descriptions.
+- **V2 · All `package.json` files**: regenerated for Harness releases with scoped names, release versions, publication metadata, precise bundled-runtime and `lib/types/**/*.d.ts` / `.d.ts.map` file entries, source exports where applicable, and declaration metadata pointing at `lib/types`. References within the vendored set use `workspace:~`. HMR declares `esbuild` as a direct dev dependency for its imported `BuildFailure` type, and Loader requires `node-addon-require-builtin@^0.1.4` to match published app runtimes.
+- **V3 · All `tsconfig.json` files**: regenerated to extend the repo-root `tsconfig.base.json`, emit TypeScript intermediates to `lib/types`, and declare project references.
+- **V4 · Vendored TypeScript source internal specifiers**: changed local relative imports/exports from upstream's specifier shape to explicit `.ts` specifiers so TypeScript rewrites emitted JS to `.js` while declarations keep explicit, NodeNext-safe `.ts` specifiers. This includes `loader/src/config/isolate.ts` using `declare module './entry.ts'`. Type-only dependencies use `import type` or inline `type` modifiers so ESM output does not retain erased interfaces.
+- **V5 · `schemastery/tsdown.config.ts` and `logger-console/tsdown.config.ts`**: ours, not upstream files — per-package build-shape overrides (dual ESM+CJS output; separate node/browser entries) for the repo-root tsdown build. They read the JS emitted under `lib/types` and then write the publish runtime entries under `lib/`. Like the regenerated tsconfigs, they are not part of the upstream sync surface.
+- **V6 · `cordis/src/fiber.ts` lifecycle hardening**: locally closes three reentrant disposal gaps. An effect's owner-list wrapper is registered before its setup body runs, so an unload begun from inside setup awaits setup and every collected cleanup; synchronous setup failure removes the wrapper and rolls back collected cleanup. Async cleanup stays owner-visible until quiescence, and Cordis's internal effect composition joins an already-running cleanup while repeated public disposer calls retain their upstream single-shot result. Effect creation is rejected while the owner is `UNLOADING` (while `PENDING` and `LOADING` remain legal), preventing cleanup-time registrations from escaping the unload snapshot. Child fibers register and receive their parent-owned disposer before `internal/plugin` publication, resolve dependency declarations added by that notification before activation, drain effects attached while pending, and contain teardown-notification failures per observer so one callback cannot starve peers or interrupt ownership cleanup.
+- **V7 · Cordis, Loader and Timer JSDoc enrichment**: added `@param`/`@returns` tags and contract documentation (disposal semantics, waterfall veto, bail conditions, error cases) across the public plugin-author surface — `Context` (class, statics, and the `Context` interface properties incl. `root`), module re-exports, shared utility helpers, `EventsService`, `Fiber`, `RegistryService`, `ReflectService`, `Service`, `LoggerService` and their `declare module './context.ts'` overloads. Loader documentation covers `loader/src/{index,internal,config/entry,config/group,config/isolate,config/tree,config/utils}.ts`, including entry ownership, tree mutation methods, and the `!!js` discriminator. Timer retains its local class and helper summaries; its README is local documentation because the upstream package has none. Comment-only; no code changes. Motivation: the website API-reference generator renders these docs and hard-errors on undocumented members. Retire this entry when the enrichment is upstreamed to the fork.
+- **V8 · `include/src/index.ts` resilient file refresh and patch reapplication**: [#514](https://github.com/deepseek-harness/deepseek-harness/pull/514) validates a top-level entry array before caching parsed content, logs refresh failures, reapplies patches after file or Include-config edits, updates the Include config when it vetoes a restart, and uses `initial` only after `ENOENT`. These parse protections retain the running tree after an invalid file; plugin activation failures can leave a partially applied tree. Loader entry/group/tree mutations follow the pinned eager, non-transactional implementation and do not restore previous plugins or options. Covered by `packages/boot/app-boot/tests/{config-reload,user-patches}.spec.ts`.
+- **V9 · `hmr/src/index.ts` module-watcher readiness and native paths**: realpath the existing watch base, classify framework modules and attach listeners before reporting readiness, and compare config paths using both canonical and configured spellings. This preserves Node module-cache identity across Windows short-name paths and filesystem aliases. The main watcher uses `ignoreInitial: true` so startup reads do not trigger another refresh; exact profile patch watching is owned by `packages/boot/hmr/src/watch-config.ts`. Covered by `packages/boot/hmr/tests/watch-config.spec.ts`.
+- **V10 · Vendored Node-compatible TypeScript**: marked erased imports explicitly across `cordis`, `loader`, `include`, `hmr`, and `schemastery` so Node's native TypeScript transform does not request types as runtime exports. Schemastery's source uses an ESM default export and its package declares `type: module`. Conditional exports select `.mjs` for import and `.cjs` for require; without them, concurrent imports under module-hook hosts reach the CJS entry and can race its require of ESM Cosmokit (`ERR_REQUIRE_ESM_RACE_CONDITION`).
+- **V11 · `include/src/index.ts` patch-semantics export**: extracted the private `applyPatches` body into the exported pure function `applyEntryPatches(data, patches, warn)` (the method delegates to it) and exported the `!!js` YAML dialect as `entryListSchema`, so `dsh --dump-config` composes and prints exactly what the include would mount without booting a tree. The entry list is deep-cloned when patches are present; without patches, the returned array retains the entry objects. Public patch and Include fields carry JSDoc for config tooling. Behavior-preserving for mounting; the extraction exists because config tooling must never reimplement (and drift from) the patch algorithm. `applyEntryPatches` also indexes each `insert`ed entry as it is added, so a later patch in the same list can configure or disable a row an earlier patch inserted; upstream built the id index once before the patch loop, leaving inserted rows silently unpatchable. That matters because `dsh` composes an empty profile root with each bundle's patch layer, the profile's and the home-level `cordis.patch.yml`, and any `--patch` overlays as sibling patch lists at one include level — patches never cross an include boundary, so surface-only rows would otherwise be unreachable from user config. Covered by `packages/boot/app-boot/tests/config-reload.spec.ts`.
+- **V13 · `include/src/index.ts` `writeTask` type**: widened the optional `writeTask?: NodeJS.Timeout` property to `NodeJS.Timeout | undefined` — the debounced writer assigns `undefined` on flush, which `exactOptionalPropertyTypes` rejects on a plain optional. Type-only; no behavior change.
+- **V14 · `include/src/index.ts` durable debounced writes**: serialized and tracked config-file writes, retried transient `EACCES`/`EBUSY`/`EPERM` rename failures with a bounded backoff, observed asynchronous timer rejections, and drained writes before and after child removal during Include teardown. The first drain preserves an existing terminal write failure even if child removal schedules a later write. Missing-file initialization awaits the write and forces a fresh parse before mounting the initial entries. Windows can briefly retain a destination handle after a Loader child disposes; the upstream fire-and-forget rename escaped as an unhandled rejection and could lose the persisted `disabled` state. A terminal failure is logged by the asynchronous writer and remains on the queue so `Include.stop()` rethrows it instead of silently declaring persistence complete; Cordis's ordinary fiber teardown retains its separate error-containment contract. Covered by `packages/host/directory-picker-auto/tests/loader-composition.spec.ts` with injected transient and terminal rename failures.
+- **V15 · Configuration access across Core, Loader, Include and HMR**: rc.11 Core owns raw `Fiber.config`, `internal/config(fiber, next)`, `internal/commit` and awaited `internal/update(config, next)`. Root-fiber candidate resolution remains available without a plugin schema. Local `rawConfig`, `resolveConfig(candidate)` and `effectiveConfig` accessors retain the DSH consumer API. Fiber caches the object passed to activation or a successful update that keeps the instance; candidate resolution is pure, failed or superseded updates cannot replace the cache, and volatile updates retain references. Loader resolves only entry roots and excludes Group/Include tree carriers, so nested `!!js` expressions wait for their own injections. Include retains its tree-carrier marker, writer and patches, and HMR transfers raw config through the accessors. Covered by `scripts/cordis-config-access.spec.ts`, `scripts/cordis-core-lifecycle.spec.ts` and the boot/HMR suites.
+- **V16 · `cordis/package.json` publishes `src`**: added `src` to the `files` list, joining the other eight vendored packages. Cordis declares `"./src/*": "./src/*"` in its exports, so a tarball without `src` publishes an export map pointing at absent files; the release change judgement also reads `files` to decide whether a diff reaches the payload, and a package whose only published paths are build output has no tracked path to match.
+- **V17 · `@deepseek-ai` rescope**: every vendored manifest `name`, every internal dependency entry among the vendored set, and every module specifier that reaches them use the scoped names in the manifest table's `npm name` column. Directory names, version numbers, and dependency ranges are unchanged, and no upstream runtime identifier is renamed — `Symbol.for('schemastery')` and Schemastery's `vendor:` metadata field keep their upstream values. Re-apply with `pnpm run rescope-vendor --apply` after a sync; the table's two name columns are the mapping, restated for consumers in [docs/rescope.md](../docs/rescope.md).
+- **V18 · Entry `disabled` interpolation in `loader/src/config/entry.ts`**: a `disabled: !!js` expression evaluates against the loader context at every mount decision; the raw node stays in the options, so write-back keeps the `!!js` form. `disabled` is the only interpolated metadata field. Covered by `packages/boot/app-boot/tests/user-patches.spec.ts` and `apps/cli/tests/windows-shell.spec.ts`.
+- **V22 · Volatile config across `cosmokit`, `schemastery`, `cordis`, and `loader`**: Cosmokit supplies immutable references and framework-owned commits; `deepEqual` treats two references as equal, propagates strict comparison into arrays, compares every array slot with holes treated as undefined, handles cycles conservatively, compares URLs by normalized href, and compares other opaque objects by identity in strict mode. Schemastery adds `.volatile()`, optional/default inference, placement validation without eager lazy-schema expansion (a lazy inner is validated once when built), metadata-free serialized node compatibility, serialized metadata, reference-aware simplification, unsupported volatile values reported as `ValidationError` with their path, and `.default()` accepting the raw input type `Partial<S>` because a volatile field makes the output type carry references. Loader's save path calls `simplify` with its schema receiver (`unparse.call`), an independent fix for the unbound-`this` call. Cordis exports consumer types without changing Fiber lifecycle. Loader compares raw options strictly in `Entry.update`; for a config-only change on an active fiber it calls the pure `equalExceptVolatile` function in `config/diff.ts`, which narrows the Standard Schema to Schemastery's `Schema` type (a new type-only `@deepseek-ai/schemastery` dependency of `loader`) and recursively skips fixed volatile paths using schema metadata without executing config hooks or validation. Missing or null object nodes compare using their declared defaults, including nodes without volatile descendants; schema backedges retain raw comparison. Entry passes its actual schema and preserves ordinary context and custom-update lifecycles. For a volatile-only change, `Entry._commitVolatile` takes the canonical fiber `entry.fiber.ctx.fiber` (`Entry.fiber` holds the registry wrapper), re-parses the raw config through `Fiber.resolveConfig()`, compares ordinary effective values, commits references and emits the instance-local `loader/volatile-update` declared in `loader/src/index.ts`; a changed ordinary effective value falls back to the ordinary remount, and an invalid candidate is logged while the raw config stays retained for the next activation. Cosmokit provides reference enumeration and commits, and `simplify` is called with its schema receiver. The package READMEs document these additions; schema tests live in `scripts/volatile-config.spec.ts`, Loader runtime and real-file tests in `scripts/loader-volatile-update.spec.ts`, and code replacement tests in the HMR module suite.
+- **V23 · `loader/src/config/entry.ts` module identity**: retains each entry's raw import result as `moduleNamespace`, before plugin export normalization. HMR matches that object to Node's cached module namespace and updates it after a successful reload. `EntryTree.import()` keeps its existing arguments and return value; `loader/README.md` documents the additive field.
+- **V24 · `timer/locale/{en,zh}.json` display metadata**: local English and Chinese titles and descriptions for the Settings plugin inventory. `timer/package.json` exports and publishes these locale resources.
+- **V25 · Loader lifecycle slice from Cordis v4.0.0-rc.11**: entry updates await context patches, Fiber updates and disabled-entry disposal; isolation uses `Impl.ctx` and maintains `Impl.isolate` during transfers; the `Entry.init()` observer handles both activation outcomes. Group and Include return their child-update work. The existing writer receives `internal/commit` with schema-bound simplification. A local dependency refresh before a combined context/config update prevents activation against stale isolation bindings. Loader, Include and HMR keep their manifest baselines apart from the slices recorded in this log. Failed fibers require an explicit update after correcting their input or dependencies. Core retains the effect hardening in V6; rc.11 owns dependency teardown ordering and superseded-activation handling.
 
 ### Resolver adaptations
 
diff --git a/vendor/cordis-rc11-upgrade-plan.md b/vendor/cordis-rc11-upgrade-plan.md
index 5669425a68..eb1b601b91 100644
--- a/vendor/cordis-rc11-upgrade-plan.md
+++ b/vendor/cordis-rc11-upgrade-plan.md
@@ -31,7 +31,7 @@ The comparison above checks the current vendored source against the release tag;
 
 The identifiers below are plan labels, not GitHub issue numbers. Preconditions are merge requirements. Independent PRs can be developed and reviewed concurrently; a dependent PR can start against the proposed changes before its predecessors merge, but must validate the actual combined result before merging.
 
-`Vn` below identifies item `n` in the [current local-modification log](README.md#local-modifications), not a PR. **Retire** means the upstream implementation replaces the local difference; **partial** means some behavior still needs a local adaptation; **retain** means the requirement remains; **prepare** does not retire a patch. These are proposed outcomes, confirmed only by the owning PR's tests. Track each item by its subject if later manifest edits renumber the log.
+`Vn` below is the stable ID of an entry in the [local-modification log](README.md#local-modifications), not a PR; a retired ID no longer appears in the log. **Retire** means the upstream implementation replaces the local difference; **partial** means some behavior still needs a local adaptation; **retain** means the requirement remains; **prepare** does not retire a patch. These are proposed outcomes, confirmed only by the owning PR's tests.
 
 | PR | Scope | Prerequisite PRs | Existing vendor modifications | Required evidence |
 |---|---|---|---|---|
diff --git a/vendor/cordis/README.md b/vendor/cordis/README.md
index ad3e290a54..950d4e683a 100644
--- a/vendor/cordis/README.md
+++ b/vendor/cordis/README.md
@@ -106,6 +106,10 @@ Schemas may return `Volatile<T>` references, whose values are read through `.get
 
 ## Configuration access
 
-`fiber.rawConfig` reads or retains the raw input for a later activation. Assigning it does not validate, update the running instance or trigger a restart. Registry wrappers route raw writes, updates and restarts through the same canonical fiber. `fiber.resolveConfig(candidate)` evaluates the fiber's config hooks and schema without publishing the result; any services used by those hooks must already be available. `fiber.effectiveConfig` returns the lifecycle-published object without re-parsing, preserving the identity of volatile references. It is undefined before the first resolution and stays readable after unload, so consumers that require a running instance also check the fiber state.
+`fiber.rawConfig` reads or retains the raw input for a later activation. Assigning it does not validate, update the running instance or trigger a restart. Registry wrappers route raw writes, updates and restarts through the same canonical fiber. `fiber.resolveConfig(candidate)` evaluates the fiber's config hooks and schema without publishing the result; any services used by those hooks must already be available. `fiber.effectiveConfig` returns the object passed to activation or the latest successful update that retained the instance, without re-parsing. Rejected or superseded updates do not replace it. Volatile updates preserve its references. It is undefined before activation and stays readable after unload, so consumers that require a running instance also check the fiber state.
 
-Use `fiber.update()` for an ordinary config change. Loader retains raw input separately when committing only volatile values into the running object.
+Use `fiber.update()` for an ordinary config change and await its result for completion. The `internal/config(fiber, next)` waterfall resolves candidates, `internal/commit` requests persistence unless `noSave` is set, and `internal/update(config, next)` either retains the instance or awaits the restart returned by `next()`. Loader retains raw input separately when committing only volatile values into the running object.
+
+## Lifecycle completion
+
+Service providers retain their implementations until dependent fibers finish unloading. Errors from superseded activations are logged without failing the replacement state. A disposed instance cannot access its released injections. A failed fiber requires an explicit `update()` to recover, including after its dependencies change.
diff --git a/vendor/cordis/src/context.ts b/vendor/cordis/src/context.ts
index 0488423088..b7dcf44ff6 100644
--- a/vendor/cordis/src/context.ts
+++ b/vendor/cordis/src/context.ts
@@ -21,7 +21,7 @@ export interface Context {
   /** The root context of the application (every child context shares it). @experimental */
   root: this
   /** Base URL used to resolve relative plugin/module specifiers, if the runtime sets one. */
-  baseUrl?: string
+  baseUrl?: string | undefined
   /** The event bus. Its methods are also mixed onto `ctx` (`ctx.on`, `ctx.emit`, ...). */
   events: EventsService
   /** The logging service. Call `ctx.logger(name)` for a named logger. */
diff --git a/vendor/cordis/src/events.ts b/vendor/cordis/src/events.ts
index c7bf42632e..9e7b6a6633 100644
--- a/vendor/cordis/src/events.ts
+++ b/vendor/cordis/src/events.ts
@@ -1,7 +1,6 @@
-import { defineProperty } from '@deepseek-ai/cosmokit'
-import type { Promisify } from '@deepseek-ai/cosmokit'
+import { defineProperty, type Awaitable, type Promisify } from '@deepseek-ai/cosmokit'
 import { Context } from './context.ts'
-import { Fiber, FiberState } from './fiber.ts'
+import { Fiber, FiberState, resolveConfig } from './fiber.ts'
 import { DisposableList, symbols } from './utils.ts'
 
 /**
@@ -129,7 +128,7 @@ export interface Hook extends EventOptions {
  * dispatch and automatically disposes listeners with their owning fiber.
  */
 export class EventsService {
-  _hooks: Record<keyof any, Hook[]> = {}
+  _hooks: Record<keyof any, Hook[]> = Object.create(null)
 
   constructor(private ctx: Context) {
     defineProperty(this, symbols.tracker, {
@@ -141,37 +140,46 @@ export class EventsService {
       if (name === 'internal/update' && !options.global) {
         const hooks = this.fiber._hooks['internal/update'] ??= new DisposableList()
         const method = options.prepend ? 'unshift' : 'push'
-        return hooks[method](listener)
+        return this.fiber.effect(() => hooks[method](listener), 'ctx.on("internal/update")')
       }
     })
 
-    this.on('internal/update', function (config, noSave, next) {
+    this.on('internal/update', function (config, next) {
       const cbs = [...this._hooks['internal/update'] || []]
       const _next = () => {
         const cb = cbs.shift() ?? next
-        return cb.call(this, config, noSave, _next)
+        return cb.call(this, config, _next)
       }
       return _next()
     }, { global: true, prepend: true })
+
+    this.on('internal/config', (fiber, next) => {
+      const config = next()
+      return fiber.runtime ? resolveConfig(fiber.runtime, config) : config
+    })
   }
 
-  /**
-   * Resolve listeners for one dispatch and apply context filtering.
-   *
-   * @param type — the dispatch mode, reported on `internal/dispatch`.
-   * @param args — the raw dispatch arguments; consumed up to the event name.
-   * @returns the matching listener callbacks, bound to the dispatch `this`.
-   */
-  dispatch(type: string, args: any[]) {
+  private _resolve(type: string, args: any[]) {
     const thisArg = typeof args[0] === 'object' || typeof args[0] === 'function' ? args.shift() : null
-    const name: string = args.shift()
-    if (!name.startsWith('internal/')) {
+    const name: string | symbol = args.shift()
+    if ((typeof name !== 'string' || !name.startsWith('internal/')) && this._hooks['internal/dispatch']?.length) {
       this.emit('internal/dispatch', type, name, args, thisArg)
     }
     const filter = thisArg?.[Context.filter]
-    return (this._hooks[name] || [])
-      .filter(hook => hook.global || !filter || filter.call(thisArg, hook.ctx))
-      .map(hook => hook.callback.bind(thisArg))
+    return [thisArg, (this._hooks[name] || [])
+      .filter(hook => hook.global || !filter || filter.call(thisArg, hook.ctx)).map(hook => hook.callback)] as const
+  }
+
+  /**
+   * Resolve bound callbacks using the event's context filter.
+   * @param type Dispatch mode reported to observers.
+   * @param args Dispatch arguments, consumed through the event name.
+   * @returns Matching callbacks bound to the dispatch receiver.
+   * DSH retains callback enumeration for per-listener error containment.
+   */
+  dispatch(type: string, args: any[]) {
+    const [thisArg, callbacks] = this._resolve(type, args)
+    return callbacks.map(callback => callback.bind(thisArg))
   }
 
   /**
@@ -181,7 +189,8 @@ export class EventsService {
    * @returns a promise resolving once every listener has settled.
    */
   async parallel(...args: any[]) {
-    const results = await Promise.allSettled(this.dispatch('emit', args).map(async cb => cb(...args)))
+    const [thisArg, callbacks] = this._resolve('parallel', args)
+    const results = await Promise.allSettled(callbacks.map(async callback => Reflect.apply(callback, thisArg, args)))
     const errors = results.filter((result): result is PromiseRejectedResult => result.status === 'rejected')
     if (errors.length) throw new AggregateError(errors.map(error => error.reason))
   }
@@ -192,7 +201,8 @@ export class EventsService {
    * @param args — optional `this`, the event name, then listener arguments.
    */
   emit(...args: any[]) {
-    this.dispatch('emit', args).map(cb => cb(...args))
+    const [thisArg, callbacks] = this._resolve('emit', args)
+    for (const callback of callbacks) Reflect.apply(callback, thisArg, args)
   }
 
   /**
@@ -202,8 +212,9 @@ export class EventsService {
    * @returns the first bail value (see {@link isBailed}), if any.
    */
   async serial(...args: any[]) {
-    for (const cb of this.dispatch('serial', args)) {
-      const result = await cb(...args)
+    const [thisArg, callbacks] = this._resolve('serial', args)
+    for (const callback of callbacks) {
+      const result = await Reflect.apply(callback, thisArg, args)
       if (isBailed(result)) return result
     }
   }
@@ -215,8 +226,9 @@ export class EventsService {
    * @returns the first bail value (see {@link isBailed}), if any.
    */
   bail(...args: any[]) {
-    for (const cb of this.dispatch('bail', args)) {
-      const result = cb(...args)
+    const [thisArg, callbacks] = this._resolve('bail', args)
+    for (const callback of callbacks) {
+      const result = Reflect.apply(callback, thisArg, args)
       if (isBailed(result)) return result
     }
   }
@@ -232,44 +244,38 @@ export class EventsService {
    * @returns the outermost listener's return value.
    */
   waterfall(...args: any[]) {
-    const cbs = this.dispatch('waterfall', args)
+    const [thisArg, callbacks] = this._resolve('waterfall', args)
     const inner = args.pop()
-    const next = () => {
-      const cb = cbs.shift() ?? inner
-      return cb(...args)
+    const dispatch = () => {
+      const callback = callbacks.shift()
+      if (!callback) return inner()
+      let called = false
+      const next = () => {
+        if (called) throw new Error('next() called multiple times')
+        called = true
+        return dispatch()
+      }
+      return Reflect.apply(callback, thisArg, [...args, next])
     }
-    args.push(next)
-    return next()
+    return dispatch()
   }
 
-  /**
-   * Store a listener record as an effect on the current fiber.
-   *
-   * @param label — effect label shown in fiber diagnostics.
-   * @param hooks — the listener list for one event.
-   * @param callback — the listener to store.
-   * @param options — placement and filtering options.
-   * @returns a disposer that unregisters the listener.
-   */
-  register(label: string, hooks: Hook[], callback: any, options: EventOptions): () => void {
+  private register(label: string, name: string | symbol, callback: any, options: EventOptions): () => void {
     const method = options.prepend ? 'unshift' : 'push'
     return this.ctx.fiber.effect(() => {
+      const hooks = this._hooks[name] ??= []
       hooks[method]({ ctx: this.ctx, callback, ...options })
-      return () => this.unregister(hooks, callback)
+      return () => this.unregister(name, callback)
     }, label)
   }
 
-  /**
-   * Remove a stored listener record.
-   *
-   * @param hooks — the listener list for one event.
-   * @param callback — the listener to remove.
-   * @returns `true` if the listener was found and removed.
-   */
-  unregister(hooks: Hook[], callback: any) {
+  private unregister(name: string | symbol, callback: any) {
+    const hooks = this._hooks[name]
+    if (!hooks) return
     const index = hooks.findIndex(hook => hook.callback === callback)
     if (index >= 0) {
       hooks.splice(index, 1)
+      if (!hooks.length) delete this._hooks[name]
       return true
     }
   }
@@ -296,9 +302,8 @@ export class EventsService {
     const result = this.bail(this.ctx, 'internal/listener', name, listener, options)
     if (result) return result
 
-    const hooks = this._hooks[name] ||= []
     const label = `ctx.on(${typeof name === 'string' ? JSON.stringify(name) : name.toString()})`
-    return this.register(label, hooks, listener, options)
+    return this.register(label, name, listener, options)
   }
 
   /**
@@ -309,7 +314,7 @@ export class EventsService {
    * @param options — listener options; a boolean is shorthand for `prepend`.
    * @returns a disposer removing the listener; `true` if it was still registered.
    */
-  once(name: string, listener: (...args: any) => any, options?: boolean | EventOptions) {
+  once(name: string | symbol, listener: (...args: any) => any, options?: boolean | EventOptions) {
     const dispose = this.on(name, function (...args: any[]) {
       dispose()
       return listener.apply(this, args)
@@ -327,20 +332,34 @@ export class EventsService {
  * diagnostics before public events are delivered.
  */
 export interface Events {
+  [key: symbol]: (...args: any[]) => any
   /** A plugin fiber was created or its uid was cleared on disposal. */
   'internal/plugin'(fiber: Fiber): void
   /** A fiber changed lifecycle state; receives the fiber and its previous state. */
   'internal/status'(fiber: Fiber, oldValue: FiberState): void
+  /** A service binding was refreshed in the matching isolation scope. */
+  'internal/service'(this: Context, name: string, value: any): void
   /**
-   * Resolve raw plugin config after the fiber's injections become active.
-   * @param config - the raw config for this activation.
+   * Apply resolved config; omitting `next()` keeps the current instance.
+   * @param resolvedConfig - the evaluated and validated candidate.
+   * @param next - restarts the fiber and waits for its lifecycle work.
    * @mode waterfall
    */
-  'internal/config'(this: Fiber, config: any, next: () => any): any
-  /** Interception hook for a service binding (no core producer). */
-  'internal/service'(this: Context, name: string, value: any): void
-  /** Waterfall: a fiber config update is being applied; skip `next()` to veto. */
-  'internal/update'(this: Fiber, config: any, noSave: boolean, next: () => void): void
+  'internal/update'(this: Fiber, resolvedConfig: any, next: () => Awaitable<void>): Awaitable<void>
+  /**
+   * Persist original config from a programmatic update, before its lifecycle transition.
+   * @param fiber - the updated fiber.
+   * @param originalConfig - the raw candidate; omitted when update uses noSave.
+   * @mode emit
+   */
+  'internal/commit'(fiber: Fiber, originalConfig: any): void
+  /**
+   * Resolve plugin config after injections are active; candidate resolution does not publish it.
+   * @param fiber - the fiber whose candidate is being resolved.
+   * @param next - obtains the raw candidate from inner listeners.
+   * @mode waterfall
+   */
+  'internal/config'(fiber: Fiber, next: () => any): any
   /** Waterfall: a service is being read through the context proxy. */
   'internal/get'(ctx: Context, name: string, error: Error, next: () => any): any
   /** Waterfall: a service is being written through the context proxy. */
@@ -348,5 +367,5 @@ export interface Events {
   /** Bail: a listener is being registered; a non-null result replaces registration. */
   'internal/listener'(this: Context, name: string, listener: any, prepend: boolean): void
   /** An event is being dispatched to listeners (fired for non-internal events only). */
-  'internal/dispatch'(mode: DispatchMode, name: string, args: any[], thisArg: any): void
+  'internal/dispatch'(mode: DispatchMode, name: string | symbol, args: any[], thisArg: any): void
 }
diff --git a/vendor/cordis/src/fiber.ts b/vendor/cordis/src/fiber.ts
index d4aed3158f..6da19b4767 100644
--- a/vendor/cordis/src/fiber.ts
+++ b/vendor/cordis/src/fiber.ts
@@ -178,7 +178,7 @@ const INACTIVE = '__INACTIVE__'
 /**
  * Runtime instance of one plugin application.
  *
- * A fiber tracks dependency state, validated config, lifecycle effects, and
+ * A fiber tracks dependency state, raw and effective config, lifecycle effects, and
  * cleanup for the plugin context returned by `ctx.plugin()`.
  */
 export class Fiber {
@@ -186,16 +186,16 @@ export class Fiber {
   public uid: number | null
   /** The context this fiber's plugin runs in (extends the parent context). */
   public readonly ctx: Context
-  /** The validated plugin config (updated by `update()`); read through {@link effectiveConfig}. */
+  /** Raw plugin input retained for the next activation. */
   public config: any
-  /** The raw plugin config, re-resolved before activation; use {@link rawConfig} to read or retain it. */
-  public _config: any
   /** Current lifecycle state; transitions emit `internal/status`. */
   public state = FiberState.PENDING
   /** Dispose this fiber: unload the plugin, then settle once cleanup finished. */
   public readonly dispose: () => Promise<void>
-  /** Snapshot of required service implementations while loaded; `undefined` otherwise. */
-  public store: Dict<Impl> | undefined
+  /** Required implementations retained through dependent teardown. */
+  public committed: Readonly<Dict<Impl>> | undefined
+  /** Service implementations owned by this fiber, including isolated provisions. */
+  public readonly provisions: Set<Impl> = new Set()
   /** The in-flight load/unload transition, if one is currently running. */
   public inertia: Promise<void> | undefined
 
@@ -206,8 +206,12 @@ export class Fiber {
   protected context: Context
 
   private _error: any
+  private _revision = 0
+  private _configRevision = 0
+  private _effectiveConfig: unknown
   private _runner: EffectRunner<string>
   private _store: Dict<Impl> = Object.create(null)
+  private _release: (() => void) | undefined
 
   /**
    * Create a fiber. Plugin authors normally obtain fibers from `ctx.plugin()`
@@ -226,7 +230,7 @@ export class Fiber {
     public runtime: Plugin.Runtime | null,
     getOuterStack: () => string[],
   ) {
-    this._config = config
+    this.config = config
     const collect = (dispose: Disposable) => {
       this._disposables.push(dispose)
     }
@@ -247,16 +251,18 @@ export class Fiber {
       this._runner = {
         epoch: INACTIVE,
         getOuterStack,
-        execute: function () {
+        execute: function (this: Fiber) {
+          const config = this.resolveConfig(this.config)
+          this._effectiveConfig = config
           if (isConstructor(runtime.callback)) {
             // eslint-disable-next-line new-cap
-            const instance = new runtime.callback(this.ctx, this.config)
+            const instance = new runtime.callback(this.ctx, config)
             for (const hook of instance?.[symbols.initHooks] ?? []) {
               hook()
             }
             return instance?.[symbols.init]?.()
           } else {
-            return runtime.callback(this.ctx, this.config)
+            return runtime.callback(this.ctx, config)
           }
         },
         collect,
@@ -321,9 +327,9 @@ export class Fiber {
       this.uid = 0
       this.ctx = this.context = parent
       this.state = FiberState.ACTIVE
-      this.store = Object.create(null)
+      this.committed = Object.create(null)
       this._runner = {
-        epoch: '',
+        epoch: '0',
         getOuterStack,
         execute: () => {},
         collect,
@@ -589,8 +595,8 @@ export class Fiber {
     if (oldState !== FiberState.ACTIVE && this.state !== FiberState.ACTIVE) return
     for (const key of Reflect.ownKeys(this.ctx.reflect.store)) {
       const impl = this.ctx.reflect.store[key as symbol]
-      if (impl.fiber !== this) continue
-      this.ctx.reflect.notify([impl.name])
+      if (impl.ctx.fiber !== this) continue
+      this.ctx.isolate(impl.name, impl.isolate).reflect.notify([impl.name])
     }
   }
 
@@ -602,22 +608,21 @@ export class Fiber {
         return delete this._store[name]
       }
     } catch (error) {
-      impl.fiber.ctx.logger.error(error)
+      impl.ctx.logger.error(error)
       return delete this._store[name]
     }
     this._store[name] = impl
   }
 
   _refresh() {
-    let epoch: string | boolean = false
-    epoch = ''
+    let epoch = `${this._revision}`
     for (const name of Object.keys(this.inject)) {
       const impl = this._store[name]
       if (!impl) {
         epoch = INACTIVE
         break
       }
-      epoch += ':' + impl.fiber.uid
+      epoch += ':' + impl.uid
     }
     this._setEpoch(epoch)
   }
@@ -625,6 +630,8 @@ export class Fiber {
   private _setEpoch(epoch: string) {
     const oldEpoch = this._runner.epoch
     if (epoch === oldEpoch) return
+    // a failed fiber only recovers through update(), which clears _error
+    if (this._error) return
     this._runner.epoch = epoch
     if (this.inertia) return
     this._updateState(() => {
@@ -640,20 +647,22 @@ export class Fiber {
 
   /** Raw input retained for the next activation, without evaluating expressions or validating it. */
   get rawConfig(): unknown {
-    return this.ctx.fiber._config
+    return this.ctx.fiber.config
   }
 
   /** Retain raw input without changing the running config or triggering an update. */
   set rawConfig(config: unknown) {
-    this.ctx.fiber._config = config
+    this.ctx.fiber.config = config
+    this.ctx.fiber._configRevision++
   }
 
   /**
-   * The config object published by the existing activation/update lifecycle, without cloning or re-parsing.
-   * It is undefined before the first resolution and remains readable after unload; callers requiring a live instance check `state`.
+   * The object passed to plugin activation or the latest successful update that retained the instance.
+   * Candidate resolution does not publish it; volatile updates retain its references.
+   * Undefined before activation and readable after unload; callers requiring a live instance check `state`.
    */
   get effectiveConfig(): unknown {
-    return this.ctx.fiber.config
+    return this.ctx.fiber._effectiveConfig
   }
 
   /**
@@ -666,28 +675,29 @@ export class Fiber {
    */
   resolveConfig(config: unknown): unknown {
     const fiber = this.ctx.fiber
-    config = fiber.context.waterfall(fiber, 'internal/config', config, () => config)
-    return fiber.runtime ? resolveConfig(fiber.runtime, config) : config
+    return fiber.context.waterfall('internal/config', fiber, () => config)
   }
 
   private async _reload() {
-    this.store = { ...this._store }
+    this.committed = { ...this._store }
+    for (const impl of Object.values(this.committed)) {
+      if (impl.ctx.fiber === this) continue
+      impl.dependents.add(this)
+    }
     const oldEpoch = this._runner.epoch
     try {
       await Promise.resolve()
-      // A disposer queued before this checkpoint may already have invalidated
-      // the load. Do not run plugin code for a stale epoch; the state update
-      // below will drain any effects collected while the fiber was PENDING.
       if (this._runner.epoch === oldEpoch) {
-        this.config = this.resolveConfig(this._config)
         await this._execute(this._runner)
-        this._error = undefined
       }
     } catch (reason) {
       // impl guarantees that the error is non-null (?)
       this.ctx.logger.error(reason)
-      this._error = reason
-      this._runner.epoch = INACTIVE
+      // A superseded load still needs cleanup, but cannot fail the new target.
+      if (this._runner.epoch === oldEpoch) {
+        this._error = reason
+        this._runner.epoch = INACTIVE
+      }
     }
     this._updateState(() => {
       if (this._runner.epoch === oldEpoch) {
@@ -700,6 +710,13 @@ export class Fiber {
   }
 
   private async _unload() {
+    // Dependents are notified when this fiber leaves ACTIVE, but may still
+    // access its services during their own teardown, so the effects of this
+    // fiber are only disposed after every dependent has unloaded.
+    while ([...this.provisions].some(impl => impl.dependents.size)) {
+      await new Promise<void>((resolve) => this._release = resolve)
+    }
+    this._release = undefined
     await Promise.all(this._disposables.clear().map(async (dispose) => {
       try {
         await composeError(async (info) => {
@@ -711,7 +728,13 @@ export class Fiber {
         this.ctx.logger.error(reason)
       }
     }))
-    this.store = undefined
+    // release the providers waiting for this fiber to unload
+    for (const impl of Object.values(this.committed ?? {})) {
+      if (!impl.dependents.delete(this) || impl.dependents.size) continue
+      impl.release?.()
+      impl.ctx.fiber._release?.()
+    }
+    this.committed = undefined
     this._updateState(() => {
       if (this._runner.epoch === INACTIVE) {
         this.inertia = undefined
@@ -745,39 +768,53 @@ export class Fiber {
   async restart() {
     const fiber = this.ctx.fiber
     fiber.assertActive()
-    fiber._setEpoch(INACTIVE)
+    fiber._revision++
     fiber._refresh()
     await fiber.await()
   }
 
   /**
-   * Validate and apply new config, then restart the plugin.
-   *
-   * Runs the `internal/update` waterfall first, so update hooks (and HMR)
-   * can veto or replace the restart.
-   *
-   * @param config — the new raw config; validated before anything restarts.
-   * @param noSave — hint for persistence hooks not to write the change back.
-   * @returns nothing; the restart runs behind the `internal/update` waterfall.
-   * @throws {ValidationError} when the new config fails validation.
+   * Resolve a candidate, retain its raw config and apply it through the update waterfall.
+   * @param config Raw config; pending fibers defer resolution until activation.
+   * @param noSave Suppress the persistence notification when true.
+   * @returns The awaited update/restart result, or undefined when a synchronous listener handles it.
+   * @throws {ValidationError} when an active fiber's candidate is invalid.
    */
-  update(config: any, noSave = false) {
+  update(config: any, noSave = false): Awaitable<void> {
     const fiber = this.ctx.fiber
     fiber.assertActive()
-    fiber._config = config
-    if (fiber.state !== FiberState.ACTIVE) {
-      // Config resolution may access injected services, so defer it until the
-      // fiber can activate.
-      fiber._error = undefined
-      fiber._setEpoch(INACTIVE)
-      fiber._refresh()
+    const loaded = fiber._runner.epoch !== INACTIVE
+    const resolved = loaded ? fiber.resolveConfig(config) : undefined
+    if (!noSave) fiber.context.emit('internal/commit', fiber, config)
+    fiber.config = config
+    fiber._error = undefined
+    const configRevision = ++fiber._configRevision
+    const epoch = fiber._runner.epoch
+    const committed = fiber.committed
+    let restarted = false
+    const restart = () => {
+      restarted = true
+      return fiber.restart()
+    }
+    const publish = () => {
+      if (!restarted && fiber.uid !== null && fiber._configRevision === configRevision
+        && fiber._runner.epoch === epoch && fiber.committed === committed) {
+        fiber._effectiveConfig = resolved
+      }
+    }
+    const result = loaded
+      ? fiber.context.waterfall(fiber, 'internal/update', resolved, restart)
+      : restart()
+    // a listener may veto the restart, in which case there is nothing to await
+    if (result === undefined) {
+      publish()
       return
     }
-    config = fiber.resolveConfig(config)
-    fiber.context.waterfall(fiber, 'internal/update', config, noSave, () => {
-      fiber.config = config
-      fiber._error = undefined
-      return fiber.restart()
-    })
+    const task = Promise.resolve(result).then(publish)
+    // the failure is already reported by the fiber, so mark it handled here:
+    // a caller that drops the result cannot turn it into an unhandled
+    // rejection, while `await update()` still observes it
+    task.catch(() => {})
+    return task
   }
 }
diff --git a/vendor/cordis/src/logger.ts b/vendor/cordis/src/logger.ts
index 7038ecc202..0dc97c16b3 100644
--- a/vendor/cordis/src/logger.ts
+++ b/vendor/cordis/src/logger.ts
@@ -21,8 +21,8 @@ export type Formatter = (value: any, exporter: Exporter, message: Message) => an
 /** Numeric severity used when exporters decide whether to emit a message. */
 export const enum LoggerLevel {
   ERROR = 0,
-  INFO = 1,
-  WARN = 2,
+  WARN = 1,
+  INFO = 2,
   DEBUG = 3,
 }
 
@@ -214,8 +214,12 @@ export class LoggerService {
       colors: 3,
       export: (message) => {
         self.buffer.push(message)
-        if (self.buffer.length > self.bufferSize) {
-          self.buffer = self.buffer.slice(-self.bufferSize)
+        // for better performance
+        const overflow = self.buffer.length - self.bufferSize
+        if (overflow === 1) {
+          self.buffer.shift()
+        } else if (overflow > 1) {
+          self.buffer.splice(0, overflow)
         }
       },
     })
@@ -251,7 +255,8 @@ export class LoggerService {
 
   [symbols.invoke](name?: string): Logger {
     const config = this._resolveConfig()
-    const fiber = ((this.ctx as any)[symbols.shadow] ?? this.ctx).fiber
+    const caller = (this as any)[symbols.caller] as Context | undefined
+    const fiber = (caller ?? this.ctx).fiber
     name ??= config.name
     name ??= hyphenate(fiber.name)
     return new Logger({
diff --git a/vendor/cordis/src/reflect.ts b/vendor/cordis/src/reflect.ts
index 7bbe1ae991..89123616a0 100644
--- a/vendor/cordis/src/reflect.ts
+++ b/vendor/cordis/src/reflect.ts
@@ -114,14 +114,22 @@ export namespace Property {
 
 /** Concrete service implementation record stored in the root reflect service. */
 export interface Impl {
+  /** Unique identity of this provision. */
+  uid: number
   /** The service name. */
   name: string
-  /** The fiber that provided the service (owns its lifetime). */
-  fiber: Fiber
+  /** The providing context, including its service isolation. */
+  ctx: Context
+  /** Fibers retaining this implementation until their teardown finishes. */
+  dependents: Set<Fiber>
+  /** Wake a provision disposer after its final dependent unloads. */
+  release?: () => void
   /** The current service value. */
   value?: any
   /** Optional availability predicate consulted before dependents may load. */
   check?: () => boolean
+  // Actual isolation symbol; may differ from the provider context after a blocked move.
+  isolate: symbol
 }
 
 /**
@@ -149,12 +157,17 @@ export class ReflectService {
           return def.get.call(ctx, ctx[symbols.receiver], error)
         }
 
-        if (!ctx.fiber.runtime) return ctx.reflect.get(prop, false)
+        // a fiber-less def site cannot declare `inject` at all, so it keeps the unchecked root access.
+        const defSite = (ctx[symbols.shadow] as Context | undefined) ?? ctx
+        if (!defSite.fiber.runtime) return ctx.reflect.get(prop, false)
         return ctx.events.waterfall('internal/get', ctx, prop, error, () => {
-          const key = target[symbols.isolate][prop]
-          let fiber = (ctx[symbols.shadow] as Context ?? ctx).fiber
+          const key = defSite[symbols.isolate][prop]
+          let fiber = defSite.fiber
           while (true) {
-            const impl = fiber.store?.[prop]
+            let impl = fiber.committed?.[prop]
+            for (const provision of fiber.provisions) {
+              if (provision.name === prop && provision.ctx[symbols.isolate][prop] === key) impl = provision
+            }
             if (impl) return getTraceable(ctx, impl.value)
             if (prop in fiber.inject) {
               error.message = `cannot get required service "${prop}" in inactive context`
@@ -209,6 +222,7 @@ export class ReflectService {
   public store: Dict<Impl, symbol> = Object.create(null)
   /** Declared context properties (services and accessors), by name. */
   public props: Dict<Property> = Object.create(null)
+  private _implCounter = 0
 
   constructor(public ctx: Context) {
     defineProperty(this, symbols.tracker, {
@@ -238,7 +252,7 @@ export class ReflectService {
     const key = this.ctx[symbols.isolate][name]
     const impl = key && this.store[key]
     if (!impl) return
-    if (strict && impl.fiber.state !== FiberState.ACTIVE) return
+    if (strict && impl.ctx.fiber.state !== FiberState.ACTIVE) return
     return impl
   }
 
@@ -257,7 +271,7 @@ export class ReflectService {
     if (!impl) {
       throw new Error(`cannot set property "${name}" without provide`)
     }
-    if (impl.fiber !== this.ctx.fiber) {
+    if (impl.ctx.fiber !== this.ctx.fiber) {
       throw new Error(`cannot set property "${name}" in multiple fibers`)
     }
     impl.value = value
@@ -285,21 +299,29 @@ export class ReflectService {
 
       this.ctx.root[symbols.isolate][name] ??= Symbol(name)
       const key = this.ctx[symbols.isolate][name]
-      const impl: Impl = { name, value, fiber: this.ctx.fiber, check }
+      const impl: Impl = { uid: ++this._implCounter, name, value, ctx: this.ctx, check, isolate: key, dependents: new Set() }
       if (this.store[key]) {
-        throw new Error(`service "${name}" has been registered at <${this.store[key].fiber.name}>`)
+        throw new Error(`service "${name}" has been registered at <${this.store[key].ctx.fiber.name}>`)
       }
       this.store[key] = impl
-      this.ctx.fiber.store![name] = impl
+      this.ctx.fiber.provisions.add(impl)
       if (this.ctx.fiber.state === FiberState.ACTIVE) {
         this.notify([name])
       }
       return async () => {
-        delete this.store[key]
-        const fibers = this.notify([name])
-        await Promise.allSettled(fibers.map(fiber => fiber.await()))
+        if (this.store[impl.isolate] === impl) delete this.store[impl.isolate]
+        this.ctx.isolate(name, impl.isolate).reflect.notify([name])
+        // Retired bindings cannot gain new dependents. Wait only for their
+        // cleanup, even if a fiber has left the registry or starts a new load.
+        // Yield even without direct dependents so child cleanup can still
+        // access the inherited service before its provision is removed.
+        await new Promise<void>((resolve) => {
+          impl.release = resolve
+          if (!impl.dependents.size) resolve()
+        })
+        impl.release = undefined
         // ensure self access before dependencies cleanup
-        delete this.ctx.fiber.store![name]
+        this.ctx.fiber.provisions.delete(impl)
       }
     }, `ctx.provide(${JSON.stringify(name)})`)
   }
@@ -309,10 +331,8 @@ export class ReflectService {
    *
    * @param names — the service names that changed.
    * @param filter — restricts notification to matching isolation scopes.
-   * @returns the fibers whose dependency state was refreshed.
    */
   notify(names: string[], filter = (ctx: Context, name: string) => ctx[symbols.isolate][name] === this.ctx[symbols.isolate][name]) {
-    const fibers: Fiber[] = []
     for (const runtime of this.ctx.registry.values()) {
       for (const fiber of runtime.fibers) {
         let hasUpdate = false
@@ -324,7 +344,6 @@ export class ReflectService {
         }
         if (!hasUpdate) continue
         fiber._refresh()
-        fibers.push(fiber)
       }
     }
     for (const name of names) {
@@ -332,7 +351,6 @@ export class ReflectService {
       self[symbols.filter] = (target: Context) => filter(target, name)
       this.ctx.events.emit(self, 'internal/service', name, this._getImpl(name, false)?.value)
     }
-    return fibers
   }
 
   /**
diff --git a/vendor/cordis/src/utils.ts b/vendor/cordis/src/utils.ts
index 024d21f5e0..07f52e6477 100644
--- a/vendor/cordis/src/utils.ts
+++ b/vendor/cordis/src/utils.ts
@@ -50,6 +50,7 @@ export interface Tracker {
 export const symbols = {
   // internal symbols
   shadow: Symbol.for('cordis.shadow'),
+  caller: Symbol.for('cordis.caller'),
   receiver: Symbol.for('cordis.receiver'),
   original: Symbol.for('cordis.original'),
   metadata: Symbol.for('cordis.metadata'),
@@ -146,11 +147,12 @@ function withProp(target: any, prop: string | symbol, value: any) {
   }))
 }
 
-function createShadow(ctx: Context, target: any, property: string | undefined, receiver: any) {
+function createShadow(useSite: Context, target: any, property: string | undefined, receiver: any) {
   if (!property) return receiver
-  const origin = Reflect.getOwnPropertyDescriptor(target, property)?.value
-  if (!origin) return receiver
-  return withProp(receiver, property, ctx.extend({ [symbols.shadow]: origin }))
+  const value = getPropertyDescriptor(target, property)?.value
+  if (!value) return receiver
+  const defSite = (value[symbols.shadow] as Context | undefined) ?? value
+  return withProp(receiver, property, useSite.extend({ [symbols.shadow]: defSite }))
 }
 
 function createShadowMethod(ctx: Context, value: any, outer: any, shadow: {}) {
@@ -162,22 +164,23 @@ function createShadowMethod(ctx: Context, value: any, outer: any, shadow: {}) {
   })
 }
 
+// `ctx` may be a shadow, i.e. a pair of:
+// - def site: where the accessing code was defined, governs service resolution
+// - use site: where the service is consumed, governs intercept, isolate and effects
 function createTraceable(ctx: Context, value: any, tracker: Tracker) {
-  // noShadow services are identity-aware (e.g. logger uses the origin fiber to
-  // derive its name): keep the shadow ctx so they can read [symbols.shadow]
-  // and resolve the origin. Non-noShadow services strip — their side effects
-  // bind to caller, not origin.
-  if (ctx[symbols.shadow] && !tracker.noShadow) {
-    ctx = Object.getPrototypeOf(ctx)
-  }
+  const defSite = (ctx[symbols.shadow] as Context | undefined) ?? ctx
+  const useSite = ctx[symbols.shadow] ? Object.getPrototypeOf(ctx) as Context : ctx
   const proxy = new Proxy(value, {
     get: (target, prop, receiver) => {
       if (prop === symbols.original) return target
-      if (prop === tracker.property) return ctx
+      if (prop === symbols.caller) return defSite
+      if (prop === tracker.property) return useSite
       if (typeof prop === 'symbol') {
         return Reflect.get(target, prop, receiver)
       }
-      if (tracker.associate && ctx.reflect.props[`${tracker.associate}.${prop}`]) {
+      // `ctx` rather than `useSite`, so that `ctx.foo.bar` and `ctx['foo.bar']` are
+      // governed by the same def site
+      if (tracker.associate && useSite.reflect.props[`${tracker.associate}.${prop}`]) {
         return Reflect.get(ctx, `${tracker.associate}.${prop}`, withProp(ctx, symbols.receiver, receiver))
       }
       let shadow: any, innerValue: any
@@ -185,33 +188,37 @@ function createTraceable(ctx: Context, value: any, tracker: Tracker) {
       if (desc && 'value' in desc) {
         innerValue = desc.value
       } else {
-        shadow = createShadow(ctx, target, tracker.property, receiver)
+        shadow = createShadow(useSite, target, tracker.property, receiver)
         innerValue = Reflect.get(target, prop, shadow)
       }
       const innerTracker = innerValue?.[symbols.tracker]
       if (innerTracker) {
-        return createTraceable(ctx, innerValue, innerTracker)
+        return createTraceable(useSite, innerValue, innerTracker)
       } else if (!tracker.noShadow && typeof innerValue === 'function') {
-        shadow ??= createShadow(ctx, target, tracker.property, receiver)
-        return createShadowMethod(ctx, innerValue, receiver, shadow)
+        shadow ??= createShadow(useSite, target, tracker.property, receiver)
+        return createShadowMethod(useSite, innerValue, receiver, shadow)
       } else {
         return innerValue
       }
     },
     set: (target, prop, value, receiver) => {
       if (prop === symbols.original) return false
+      if (prop === symbols.caller) return false
       if (prop === tracker.property) return false
       if (typeof prop === 'symbol') {
         return Reflect.set(target, prop, value, receiver)
       }
-      if (tracker.associate && ctx.reflect.props[`${tracker.associate}.${prop}`]) {
+      if (tracker.associate && useSite.reflect.props[`${tracker.associate}.${prop}`]) {
         return Reflect.set(ctx, `${tracker.associate}.${prop}`, value, withProp(ctx, symbols.receiver, receiver))
       }
-      const shadow = createShadow(ctx, target, tracker.property, receiver)
+      const shadow = createShadow(useSite, target, tracker.property, receiver)
       return Reflect.set(target, prop, value, shadow)
     },
     apply: (target, thisArg, args) => {
-      return applyTraceable(proxy, target, thisArg, args)
+      const receiver = tracker.noShadow
+        ? proxy
+        : createShadow(useSite, target, tracker.property, proxy)
+      return applyTraceable(receiver, target, thisArg, args)
     },
   })
   return proxy
@@ -226,7 +233,7 @@ function applyTraceable(proxy: any, value: any, thisArg: any, args: any[]) {
 export function createCallable(name: string, proto: {}, tracker: Tracker) {
   const self = function (...args: any[]) {
     const proxy = createTraceable(self['ctx'], self, tracker)
-    return applyTraceable(proxy, self, this, args)
+    return Reflect.apply(proxy, this, args)
   }
   defineProperty(self, 'name', name)
   return Object.setPrototypeOf(self, proto)
diff --git a/vendor/include/src/index.ts b/vendor/include/src/index.ts
index ee4dd53fb8..075252dfff 100644
--- a/vendor/include/src/index.ts
+++ b/vendor/include/src/index.ts
@@ -187,14 +187,10 @@ export class Include extends EntryTree {
     this.readonly = !this.type
     this.ctx.baseUrl = new URL('.', pathToFileURL(this.filename)).href
 
-    ctx.on('internal/update', (config, _, next) => {
+    ctx.on('internal/update', (config, next) => {
       if (config.path !== this.config.path) return next()
-      // Veto the fiber restart (children update in place), but persist the new
-      // config ourselves — `Fiber.update` only assigns `this.config` behind
-      // `next()`, and a stale `this.config.patches` would make the next
-      // `refresh()` re-apply the old overlay.
       this.config = config
-      this.root.update(this.applyPatches(this.data!, config.patches)).catch((error) => {
+      return this.root.update(this.applyPatches(this.data!, config.patches)).catch((error) => {
         this.ctx.logger.warn('config update at %C failed', this.filename)
         this.ctx.logger.warn(error)
       })
diff --git a/vendor/loader/README.md b/vendor/loader/README.md
index de94a32fdb..9297bf885d 100644
--- a/vendor/loader/README.md
+++ b/vendor/loader/README.md
@@ -61,3 +61,7 @@ Node module internals are classified by their available APIs, including the v1 A
 ## Volatile configuration
 
 `Entry.update` compares raw entry options strictly; when only `config` changed on an active fiber in an unchanged context, the pure `equalExceptVolatile` function in `config/diff.ts` compares the raw configs using Schemastery metadata. It ignores volatile fields at fixed object paths without executing expressions, validators or `internal/config` hooks. Object nodes use their declared defaults for null or absent values, including objects without volatile fields; equivalent defaults skip updates. Other ordinary values, parent expressions and unknown fields retain raw comparison. Recursive schema backedges use raw comparison. Entry passes the actual plugin schema; a non-Schemastery schema compares raw. Context changes, other option changes and pending fibers use ordinary updates. A volatile-only change retains the raw Fiber config for later activation, then `_commitVolatile` parses it through the fiber's `internal/config` hook and schema, commits the new values into the running references when every ordinary effective value still matches, and emits `loader/volatile-update` to the owning fiber with the changed paths. A changed ordinary effective value uses the ordinary remount with a debug log naming the entry; because strict comparison treats class instances other than URL, Date and RegExp by identity, an ordinary field whose transform builds a fresh instance on every parse always takes that remount. An invalid candidate is logged and leaves the running references unchanged. A throwing `loader/volatile-update` listener is logged and does not fail the update; the values are already committed. Group/Include retain child dispatch, and programmatic Fiber updates preserve saving and `noSave`; `simplify` is called with its schema receiver so saved config contains plain values.
+
+## Update completion
+
+Entry updates await `loader/patch-context`, the Fiber update waterfall and disabled-entry disposal. Combined context/config changes refresh required bindings before restarting. Group and Include updates expose completion of their child updates; file persistence still follows Include’s debounced writer.
diff --git a/vendor/loader/src/config/entry.ts b/vendor/loader/src/config/entry.ts
index 5f819367ee..b014ed6497 100644
--- a/vendor/loader/src/config/entry.ts
+++ b/vendor/loader/src/config/entry.ts
@@ -98,12 +98,15 @@ export class Entry {
     return evaluate(this.ctx, expr)
   }
 
-  private _patchContext(diff: string[]) {
-    this.context.waterfall('loader/patch-context', this, () => {
+  private async _patchContext(diff: string[]) {
+    await this.context.waterfall('loader/patch-context', this, async () => {
       Object.setPrototypeOf(this.ctx, this.parent.ctx)
 
       if (this.fiber?.uid && (diff.includes('config') || this.options.group)) {
-        this.fiber.update(this.options.config, true)
+        // A simultaneous context/config edit must restart against the new dependencies.
+        const fiber = this.fiber.ctx.fiber
+        for (const name of Object.keys(fiber.inject)) fiber._checkImpl(name)
+        await fiber.update(this.options.config, true)
       }
     })
   }
@@ -134,7 +137,7 @@ export class Entry {
 
     // step 2: execute
     if (this.disabled) {
-      this.fiber?.dispose()
+      await this.fiber?.dispose()
       return
     }
 
@@ -150,7 +153,7 @@ export class Entry {
       const pending = volatileOnly && this._commitVolatile() ? [] : changes
       if (!pending.length && !force) return
       this.context.emit('loader/partial-dispose', this, legacy, true)
-      this._patchContext(pending)
+      await this._patchContext(pending)
     } else {
       await this.init()
     }
@@ -162,7 +165,7 @@ export class Entry {
    * @returns `false` when an ordinary effective value changed, so the caller applies the ordinary update lifecycle.
    */
   private _commitVolatile(): boolean {
-    const fiber = this.fiber!
+    const fiber = this.fiber!.ctx.fiber
     const refs = volatileEntries(fiber.effectiveConfig)
     if (!refs.length) return true
     const raw = this.options.config
@@ -213,11 +216,10 @@ export class Entry {
     } finally {
       this._initTask = undefined
     }
-    const notify = () => {
+    this.fiber?.await().catch(() => {}).finally(() => {
       if (this.loader.getTasks().length) return
       this.ctx.reflect.notify(['loader'])
-    }
-    this.fiber?.await().then(notify, notify)
+    })
   }
 
   private async _init() {
@@ -227,13 +229,11 @@ export class Entry {
     } catch (error) {
       this.ctx.logger.error(error)
       return
-    } finally {
-      this._initTask = undefined
     }
     const plugin = this.loader.unwrapExports(moduleNamespace)
-    this._patchContext([])
+    await this._patchContext([])
     this.loader.showLog(this, 'apply')
-    this.fiber = this.ctx.registry.plugin(plugin, this.options.config, this.getOuterStack).ctx.fiber
+    this.fiber = this.ctx.registry.plugin(plugin, this.options.config, this.getOuterStack)
     this.moduleNamespace = moduleNamespace
   }
 }
diff --git a/vendor/loader/src/config/group.ts b/vendor/loader/src/config/group.ts
index 15d4d49e4b..ba797a44ee 100644
--- a/vendor/loader/src/config/group.ts
+++ b/vendor/loader/src/config/group.ts
@@ -78,9 +78,7 @@ export class Group extends EntryGroup {
 
   constructor(public ctx: Context, public config: EntryOptions[]) {
     super(ctx, ctx.fiber.entry!.parent.tree)
-    ctx.on('internal/update', (config) => {
-      this.update(config)
-    })
+    ctx.on('internal/update', config => this.update(config))
   }
 
   async* [Service.init]() {
diff --git a/vendor/loader/src/config/isolate.ts b/vendor/loader/src/config/isolate.ts
index e2fd539157..43747992ce 100644
--- a/vendor/loader/src/config/isolate.ts
+++ b/vendor/loader/src/config/isolate.ts
@@ -93,7 +93,7 @@ export default function isolate(ctx: Context) {
     entry.ctx[Context.isolate] = Object.create(entry.ctx[Context.isolate])
   })
 
-  ctx.on('loader/patch-context', (entry, next) => {
+  ctx.on('loader/patch-context', async (entry, next) => {
     // step 1: generate new isolate map
     const newMap: Dict<symbol> = Object.create(entry.parent.ctx[Context.isolate])
     for (const name of Object.keys(entry.options.isolate ?? {})) {
@@ -110,12 +110,13 @@ export default function isolate(ctx: Context) {
       for (const symbol of [oldMap[name], newMap[name]]) {
         const impl = symbol && entry.ctx.reflect.store[symbol]
         if (!impl) continue
-        if (!impl.fiber) {
+        const fiber = impl.ctx.fiber
+        if (!fiber) {
           entry.ctx.logger.warn(new Error(`expected service ${name} to be implemented`))
           continue
         }
-        diff[name] = [oldMap[name], newMap[name], entry.ctx[delim], impl.fiber.ctx[delim]]
-        if (entry.ctx[delim] !== impl.fiber.ctx[delim]) break
+        diff[name] = [oldMap[name], newMap[name], entry.ctx[delim], fiber.ctx[delim]]
+        if (entry.ctx[delim] !== fiber.ctx[delim]) break
       }
     }
 
@@ -126,13 +127,15 @@ export default function isolate(ctx: Context) {
     swap(entry.ctx[Context.intercept], entry.options.intercept)
 
     // step 4: reload fiber
-    next()
+    await next()
 
     // step 5: replace service impl
     for (const [symbol1, symbol2, flag1, flag2] of Object.values(diff)) {
-      if (flag1 === flag2 && entry.ctx.reflect.store[symbol1] && !entry.ctx.reflect.store[symbol2]) {
-        entry.ctx.reflect.store[symbol2] = entry.ctx.reflect.store[symbol1]
+      const impl = entry.ctx.reflect.store[symbol1]
+      if (flag1 === flag2 && impl && !entry.ctx.reflect.store[symbol2]) {
+        entry.ctx.reflect.store[symbol2] = impl
         delete entry.ctx.reflect.store[symbol1]
+        impl.isolate = symbol2
       }
     }
 
diff --git a/vendor/loader/src/index.ts b/vendor/loader/src/index.ts
index 51d36260a8..f9d9baff0a 100644
--- a/vendor/loader/src/index.ts
+++ b/vendor/loader/src/index.ts
@@ -1,5 +1,5 @@
-import { Context, FiberState, Inject, Service, type Fiber } from '@deepseek-ai/cordis'
-import { defineProperty, isNullable, type Dict } from '@deepseek-ai/cosmokit'
+import { Context, FiberState, Inject, Service } from '@deepseek-ai/cordis'
+import { defineProperty, isNullable, type Awaitable, type Dict } from '@deepseek-ai/cosmokit'
 import { ModuleLoader } from './internal.ts'
 import { Entry, type EntryOptions } from './config/entry.ts'
 import { EntryGroup } from './config/group.ts'
@@ -38,7 +38,7 @@ declare module '@deepseek-ai/cordis' {
      * @param next - continue context refresh and Loader's config update.
      * @mode waterfall
      */
-    'loader/patch-context'(entry: Entry, next: () => void): void
+    'loader/patch-context'(entry: Entry, next: () => Awaitable<void>): Awaitable<void>
   }
 
   interface Context {
@@ -101,26 +101,23 @@ export class Loader extends EntryTree {
 
     ctx.reflect.provide('loader', this, this[Service.check])
 
-    ctx.on('internal/config', function (this: Fiber, _config, next) {
+    ctx.on('internal/config', (fiber, next) => {
       const config = next()
-      if (!this.entry || this.parent.fiber?.entry === this.entry) return config
-      // Tree carriers (Group, Include) keep their configs literal: their
-      // entry and patch lists hold other rows' configs, whose `!!js`
-      // expressions belong to those rows' own fibers.
-      const plugin = this.runtime?.callback as Record<PropertyKey, unknown> | undefined
-      if (plugin?.[EntryGroup.key]) return config
-      return interpolate(this.ctx, config)
-    }, { global: true })
+      if (!fiber.entry || fiber.parent.fiber?.entry === fiber.entry) return config
+      // Tree carriers preserve the expressions owned by their child entries.
+      if (fiber.runtime?.callback[EntryGroup.key]) return config
+      return interpolate(fiber.ctx, config)
+    })
 
-    ctx.on('internal/update', function (config, noSave, next) {
-      if (!this.entry || noSave || this.parent.fiber?.entry === this.entry) return next()
-      const unparse = this.runtime?.Config?.['simplify']
-      this.entry.options.config = unparse ? unparse.call(this.runtime!.Config, config) : config
-      this.entry.parent.tree.write()
-      return next()
-    }, { global: true, prepend: true })
+    ctx.on('internal/commit', (fiber, config) => {
+      if (!fiber.entry || fiber.parent.fiber?.entry === fiber.entry) return
+      const schema = fiber.runtime?.Config
+      const unparse = schema?.['simplify']
+      fiber.entry.options.config = unparse ? unparse.call(schema, config) : config
+      fiber.entry.parent.tree.write()
+    })
 
-    ctx.on('internal/update', function (config, _, next) {
+    ctx.on('internal/update', function (config, next) {
       if (!this.entry || this.parent.fiber?.entry === this.entry) return next()
       self.showLog(this.entry, 'reload')
       return next()
diff --git a/vitest.config.ts b/vitest.config.ts
index a6b5029726..34086431c7 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -1,4 +1,5 @@
 import { spawnSync } from 'node:child_process'
+import { existsSync } from 'node:fs'
 import { fileURLToPath } from 'node:url'
 import tsconfigPaths from 'vite-tsconfig-paths'
 import { resolvePwshPath } from './packages/shell/pwsh-local/src/resolve.ts'
@@ -185,9 +186,18 @@ const claudeCodeTestingAliases = {
   'claude-code': fileURLToPath(new URL('./packages/experimental/claude-code-mods/tests/support/claude-code.ts', import.meta.url)),
 }
 
+// The LiveShare client entry statically imports its generated `./remote` contribution, which exists
+// only in built `lib/` output. On a clean checkout Vite resolves that import while transforming the
+// entry, before `vi.mock` can answer it, so the jsdom assembly suites need a resolvable stand-in.
+const liveshareRemoteBuild = fileURLToPath(new URL('./packages/experimental/liveshare/lib/typert.remote-client.js', import.meta.url))
+const generatedRemoteAliases = existsSync(liveshareRemoteBuild) ? {} : {
+  '@deepseek-ai/dsh-experimental-liveshare/remote': fileURLToPath(new URL('./packages/experimental/liveshare/tests/generated-remote-stub.ts', import.meta.url)),
+}
+const testingAliases = { ...claudeCodeTestingAliases, ...generatedRemoteAliases }
+
 export default defineConfig({
   plugins: [pathsPlugin(), standardDecoratorPlugin()],
-  resolve: { alias: claudeCodeTestingAliases },
+  resolve: { alias: testingAliases },
   test: {
     ...localWorkerBudget,
     setupFiles: [
@@ -201,7 +211,7 @@ export default defineConfig({
     projects: [
       {
         plugins: [pathsPlugin(), standardDecoratorPlugin()],
-        resolve: { alias: claudeCodeTestingAliases },
+        resolve: { alias: testingAliases },
         test: {
           name: 'thread-safe',
           execArgv: vitestExecArgv,
@@ -223,7 +233,7 @@ export default defineConfig({
       },
       {
         plugins: [pathsPlugin(), standardDecoratorPlugin()],
-        resolve: { alias: claudeCodeTestingAliases },
+        resolve: { alias: testingAliases },
         test: {
           name: 'process-bound',
           execArgv: vitestExecArgv,