Merge branch 'codex/simp-agent-entry-state' into codex/simp-unify-agent-session-id

# Conflicts:
#	packages/ui/stdio-agent/README.md
This commit is contained in:
Tianyi Cui
2026-07-14 15:27:32 +08:00
101 changed files with 2272 additions and 171 deletions

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@@ -59,3 +59,12 @@ Provider additions and removals also emit `subagent/provider-added` and `subagen
## Collection model
The current model-facing tool collects synchronously: it awaits the child result and disposes the run before returning. Background collection and polling remain outside this seam. See the [capability-seam RFC](../../../docs/rfc/implemented/feature/2026-06-21-subagent-capability-seam.md) and `src/types.ts` for the complete contracts.
## Model Experience
Indirectly, through `dsh-tool-subagent`, which retains only a provider's data-dependent final output or exact `Error: no subagent provider registered for "<name>"`, `Error: subagent provider "<name>" does not support the "<capability>" capability`, and `Error: <message>` start failures in the parent while child working tokens remain child-only.
## Known Limitations and Deferred Work
- **The current consumer collects synchronously** — the model-facing tool starts a run and awaits `result`; steering (`sendMessage`) is part of the seam but intentionally unused, and background/poll/spill semantics are deferred to a future long-running-runtime design.
- **The lifecycle events are observe-only** — a run-affecting `subagent/end` continuation or decision surface is deferred until a consumer needs one.