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trigger_org_node_full(): guards (TASK_NOT_READY -- wrong task.status or required artifacts not validation_status=passed; CONCURRENCY_LIMIT_REACHED -- only on the planner/queued transition, per 04-P's guard column; USAGE_LIMIT_REACHED -- detected from the underlying claude error text, best-effort against REQ-14's cited "hit your session limit" phrasing) then calls U-005's trigger_org_node for the real subprocess call, then advances task.status: queued->planning_brd_prd_sdd (planner), planning_brd_prd_sdd ->coding (coder, gated on brd/prd/sdd/benchmark all passed), coding->validating (validator, gated on code_diff/test_report both passed). Verified for real: all three Org Agents actually triggered in sequence (chained claude --agent calls, ~15s/~$0.15 total) with task.status advancing correctly at each step -- not just planner like U-004/U-005's tests, all three personas confirmed invokable. Also corrects two more development-plan.md issues found while scoping this Unit, same class as U-002/U-009/U-036: - U-010's Done line cited '架构文档 §11"手工调用验证"里程碑' -- that phrase doesn't exist in architecture doc §11 at all. The real source is 05 §5.5's rollout step 2 ("手工调用验证...三个 Org Agent 分别可被触发"), whose "分别" (separately/respectively) is the load-bearing word: verify each CAN be triggered, not that a full artifact-validated chain runs end to end. That distinction is why this Unit's scope is exactly what got built -- not chasing planning_failed/coding_failed retries or validator PASS/FAIL routing, which need real Work Graph output (U-011+) or Org-level Loop routing (U-015/016, PH2) that don't exist yet. - Added an explicit scope note spelling out exactly which 3 transitions this Unit owns vs. which parts of p_org_task_lifecycle it deliberately doesn't touch, so nobody has to re-derive this from the code later. 11 new mocked stdlib unittest cases + 1 gated real chained-trigger test. 87 total mocked tests across U-001-010, all passing; the real test independently re-run and confirmed passing. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>