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Tianyi Cui
9dcc8fa985
Integrate master 78ae4fc2d4d8ecaebb4b674028f781a358b92cc9 after the four independent review fixes. Keep this base update separate from those fixes and from subsequent review changes so the integration is independently reviewable and the observed-master checkpoint remains preserved. Retain activation-owned execution, caller-independent local discovery, and unconditional parent final-answer delivery. Preserve master's preset scoped scheduling tools and all delegated-child schedule deny rules. Move the new scheduling regression from the removed driver package into the surviving subagent package and run it through a real Spawn activation. Preserve master's removal of runtime invariant plugins, dependencies, exports, and test mounts. Keep context disposal before fixture directory cleanup. Combine Python workflow ordering with activation/catalog events without inventing unsupported source-plane import paths. Keep all frozen Agent Note archives byte-for-byte identical to master; do not accept Git's automatic edits to renamed archived notes. Retain current lifecycle and delivery facts in active documentation, repair its links, and regenerate catalogs/persistence schemas from merged source. All 62 master persistence roots remain; only subagent/catalog gains the PR's external membership extension. Keep master's third-party lock graph and update only workspace dependency changes. Validation before this checkpoint: 683 focused tests passed, seven Windows-only cases skipped; 2,772 archived artifacts verified. Generated catalog and active-pair checks passed. Fresh artifact build and remaining build-dependent documentation checks continue before publication.
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description, kind
| description | kind |
|---|---|
| The subagent package group: the delegation seam, its in-process and out-of-process backends, and the model-facing delegation tools. | package-group |
subagent/ — subagent capability family
English | 中文
Summary
The subagent package family lets an agent delegate a task to a child, continue the child's work, and discover every child it created. Choose a fresh in-process child for isolated work, a history-seeded in-process child when prior conversation matters, or an out-of-process child backed by ACP, Codex, Claude Code, or another Harness runtime. Model-facing tools also let agents message adjacent agents, interrupt work, and list child status. Each child remains visible to its parent whether it is running or stored; the package READMEs document provider-specific setup and limits.
Table of Contents
Packages
| Package | Role | ctx key |
|---|---|---|
subagent/ |
Defines the delegation service: provider registry, one-shot runs, continuable children, and discovery | ctx.subagents |
subagent-spawn-in-process/ |
Runs a fresh in-process child | registers on ctx.subagents |
subagent-fork-in-process/ |
Runs an in-process child seeded from the parent's completed history | registers on ctx.subagents |
subagent-acp/ |
Runs an out-of-process child over the Agent Client Protocol | registers on ctx.subagents |
subagent-codex/ |
Runs a real Codex child through the official app-server protocol | registers on ctx.subagents |
subagent-claude-code/ |
Runs a real Claude Code child through the official Agent SDK | registers on ctx.subagents |
subagent-dsh-sdk/ |
Runs an out-of-process Harness child through the TypeScript SDK | registers on ctx.subagents |
tool-subagent/ |
Exposes delegation to the model | registers on ctx.tools |
tool-subagent-control/ |
Exposes adjacent-agent messaging, interrupt, and listing to the model | registers on ctx.tools |
Related documentation
- Subagent subsystem — the service contract, provider contract, and terminal result semantics.
- historical Subagent capability seam — the design record for the delegation capability family.
- Continuable subagents — durable children that accept follow-up turns.
- tool-subagent-control README — the follow-up, interrupt, and listing surface.
Dev Note
None.