The planner workflow finished. It analyzed the request — adding a boundary-semantics comment above `_LOOP_LIMIT = 3` in `src/org_loop_route.py` — and produced a BRD (not yet written to disk or committed).

Key findings:
- Verified against source & spec: `_LOOP_LIMIT = 3` (line 38) is checked in `route_org_loop()` (~line 102-114) — when `task["loop_round"] >= _LOOP_LIMIT`, the task transitions to `status = 'blocked_pending_human'` with `blocked_reason = 'loop_limit_reached'`, raising `LoopLimitReachedError`. This matches REQ-05 (Org-level Loop closure, failure case) and REQ-09 (loop termination & human escalation) in `docs/sdd/06-验收与测试锚点.md`.
- Scope: exactly one new comment line above `_LOOP_LIMIT = 3`; no logic, value, or other file changes.
- Done criteria: `git diff --stat` shows 1 file changed, with only that single `+` line added; the comment must mention `loop_round`, `_LOOP_LIMIT`, `blocked_pending_human`, and cite REQ-05/REQ-09.
- Risk: negligible (comment-only change).

This was just the planner stage — no files were written and nothing was committed. Awaiting direction on whether to proceed to Coder/Validator stages or have the BRD reviewed first.