Models coordinate subagents through send_message, interrupt_agent, list_agents,
and Team task owners, but every one of those addressed a member by a
36-character Session id. Each new child now has a name, unique among its
creator's children, recorded as a field of the subagent/catalog entry the
creator already appends (payload version 3).
The Session id stays the only execution identity for routing, authorization,
persistence, task ownership, and navigation. A name is a model-facing
reference: 1-32 lower-case letters, digits, or hyphens starting with a letter,
never `lead`, so a UUID never parses as one. Omission selects the first free
`agent-N`; an explicit duplicate or invalid name fails before startup. The
creator reserves the name synchronously at admission and releases it when the
catalog entry commits or startup fails, so no second write, rollback protocol,
or optional naming service exists.
The root is `lead`, and a descendant's full name is its path from the root
without a `lead/` prefix, such as `reviewer/checker`. Sibling-unique segments
make full names tree-unique without a root registry, and cold resume rebuilds
a member's path from the catalogs along its creation chain. A member below an
unnamed historical creator keeps its Session id as its name. resolveName()
reads only the catalogs along the path and grants no authority.
Tools, runtime-authored text, and the Web client consume names: delegation
takes an optional name and returns { kind, subagentId, name }; send_message and
interrupt_agent take `agent`; list_agents rows carry name, status, and
description; Team task results report the owner's name while storage keeps
ownerId; identity runtime context, message framing, and settlement notices use
full names. Recorded sessions, CLI and Web expectations, the Python runtime
snapshots, bilingual docs, an upgrade guide, and an Agent Note follow.
- tool-jobs: inline a completion notice only when the complete text fits inlineOutputBytes and the producer cap; otherwise point at job_output, whose result the spill policy bounds
- subagent: drop toolCallsThisStep; omit the closing text while the child's last logged tool call is its message to the parent
- subagent: a send_message that shares its step with another tool call no longer omits the closing message
- tests: read settled job results through job_output and give job-owning test agents a mutable inbox
Preserve the persistent runtime package description with master's alpha.2 version and locale exports. Refresh the two PTC prompt snapshots for the current plan-tool result type.
Validation: full build, 434 focused tests (one skipped), two built-runtime tests, two selected snapshots, package metadata, and all 43 doc-sync checks passed.
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