Files
deepseek-harness/packages/subagent
Hypatia May ea47c32805 review: one fold implementation, uniform end-edge absence, partial text in tool errors, snapshot scenario
Address ds-review-bot on #2127:

- assistant-output: the rule has ONE implementation, the incremental
  AssistantOutputFold (push/pushText/collect); finalAssistantOutput folds a
  complete suffix, the SDK backend folds notification events, and the ACP
  backend folds raw chunk text into the same streamed fallback.
- subagent/end.lastAssistantMessage: 'no output' is encoded once — absent,
  never [], on both lifecycle shapes (observeRun now omits empty output).
- tool-subagent: a non-completed foreground result stays isError but appends
  the child's preserved partial text after the stop-reason headline.
- Authored keyless snapshot scenario subagent-max-tokens-partial pins the
  assembled transcript: the child's committed log carries the usage-only
  empty message and the parent's tool result carries the partial answer.
- Rule-boundary sentence (message wins over later streamed text) and the
  consumer half recorded in the Agent Note; comments trimmed to pointers.
2026-08-10 16:09:04 +08:00
..

subagent/ — subagent capability family

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This family lets an agent delegate work to child agents. Multiple named providers may coexist in one context.

Package Role ctx key
subagent/ Defines provider registration, delegation, and continuation ctx.subagents
subagent-inprocess/ Provides the shared in-process run driver
subagent-spawn/ Starts a fresh in-process child registers on ctx.subagents
subagent-fork/ Starts an in-process child from the parent's completed history registers on ctx.subagents
subagent-acp/ Starts an out-of-process child over ACP registers on ctx.subagents
subagent-codex/ Starts a real Codex app-server child registers on ctx.subagents
subagent-claude-code/ Starts a real Claude Code child through the official Claude Agent SDK registers on ctx.subagents
subagent-dsh-sdk/ Starts 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 child messaging and listing to the model registers on ctx.tools
tool-subagent-report/ Provides the child-to-parent report channel registers in child scopes

See the decisions for the capability family, continuable children, and control tools.

The subsystem reference — start requests, results, live runs, the provider contract, continuable background children — is docs/subsystems/subagent.md; design rationale in the subagent capability seam, continuable background subagents, and merged subagent control service Agent Notes.