chore(canary): refresh chat_actions' reviewed module ceiling to unblock main

[huangruiteng]

Goal And Delivered Outcome

• Goal/source and gap: main has been red since fix(manager): make a partial team-plan materialization recoverable #4587. tests/canary/test_maintainability_ratchet.py::test_current_repository_debt_is_reviewed_without_line_count_pins reports unreviewed finding: module_metric_budget:loopx/chat_actions.py, so every open PR inherits a failing test-shard and no PR can merge.
• Observable before → after: on origin/main (809f0cf) the ratchet fails with debt: module_metric_budget=1, unreviewed=1; with this one-line ledger refresh the report is ok: True, unreviewed: 0, finding_count: 2 (compatibility_facade), which is exactly what the test asserts.
• Issue/task and intended base: main (809f0cf). No tracking issue; this is the canary's own prescribed remedy.

Scope And Continuation

• Completed scope and remaining work: loopx/chat_actions.py is 1604 lines against a reviewed ceiling of 1590, so the checked-in ledger is refreshed to the reviewed value. The growth itself is not introduced here — it is already merged — and the module keeps its own entry rather than the 1500-line default, so the debt stays visible and bounded. any_count keeps its existing 52 headroom (currently 45).
• Why the growth belongs in this module: fix(manager): keep a confirmed team plan's priority and report its real outcome #4582 / fix(manager): bind a team plan to the intent it was reviewed against #4585 / fix(manager): make a partial team-plan materialization recoverable #4587 extended the single Chat action settlement owner with typed lane-level results (lane_failure, lane_settlements, bounded details on mark_failed) instead of adding a second settlement path. The alternative remedy — extracting that code — would rewrite work that three open PRs (fix(heartbeat): carry the closeout vision decision in the writeback guidance #4590, feat(manager): name the lanes a confirmed team plan left unstaffed #4600, feat(manager): let a partially applied team plan be finished #4602) are already changing in the same module, so this PR takes the ledger route the canary names instead of forcing a conflicting refactor.
• Slice boundary / successor: complete within this scope. A later refactor of the lane-level settlement code is worth doing from a quiet base, not from underneath three in-flight PRs; no successor task is created here because the ledger is the sanctioned settlement mechanism.

Validation

• Tested revision: bf2b283
• Run state: finished
• Input classes: none

Check kind	Result	Public-safe evidence / limitation
regression_parity	passed	Failing before: a clean origin/main worktree fails the ratchet with unreviewed finding: module_metric_budget:loopx/chat_actions.py (also failing on main's own Python Tests run 35176730888, job test-shard (2)). Passing after: same test green on this head.
unit	passed	uv run --extra test python -m pytest tests/canary -q → 21 passed

• Coverage and gaps: the ratchet, and the ledger it reads, are the whole subject of this change; the group above is the owning suite. No runtime, frontend, permission or scoring behaviour is touched.

Frontend / Visual Evidence

• UI impact: none
• Before: N/A
• After: N/A
• States and viewports shown: N/A
• Source data: none

Type of Change

• Bug fix

LoopX Area

• Build, packaging, installer, or CI

Technical Direction

• Direction / acceptance reference, when applicable: the canary's reviewed module-metric ledger (loopx/canary/module_metric_baseline.json), whose own report text states that the ledger edit is the reviewer-visible decision whether growth is accepted.

Shared-authority RFC fixture impact

• Production-scale fixture schema: N/A
• Semantic dimensions changed, or reviewed no-impact rationale: N/A
• Provider conformance arms run: N/A
• Read-only legacy/file/PostgreSQL three-arm rehearsal: N/A

Boundary Checklist

• Neither the diff nor this PR body/comments/attachments disclose private state, credentials, raw traces or verifier output, internal links, or local machine paths
• I did not duplicate maintainer-owned benchmark work
• I kept the change scoped to the linked issue/task
• I completed the visual evidence section for UI changes, or marked UI impact none
• Every commit includes a DCO Signed-off-by trailer

中文摘要

• 现状：main 自 fix(manager): make a partial team-plan materialization recoverable #4587 起就是红的——chat_actions.py 现在 1604 行，超过已评审上限 1590，canary 报 unreviewed finding: module_metric_budget，所有 PR 的 test-shard 因此失败，合并不了。
• 变化：只改一行，把 ledger 里的上限刷新为本次评审接受的 1604；模块仍保留独立条目（默认上限是 1500），any_count 不动（现 45，上限 52），债务保持可见且有界。
• 为什么涨在这里：三次已合并的修复把“按 lane 的结算结果”加在同一个 Chat action 结算宿主上，而不是新开第二条结算路径；现在做抽取会与三个正在改同一文件的 PR（fix(heartbeat): carry the closeout vision decision in the writeback guidance #4590 / feat(manager): name the lanes a confirmed team plan left unstaffed #4600 / feat(manager): let a partially applied team plan be finished #4602）冲突，所以采用 canary 指定的 ledger 路线。
• 验证：改动前在干净的 origin/main worktree 上该测试失败（main 自己的 run 35176730888 同样失败）；改动后 tests/canary -q 21 passed。

[huangruiteng]

@/tmp/review-4618.md

[huangruiteng]

动机

main 从 #4587 合入起就是红的，而且这个红与任何一条在飞 PR 的改动无关。tests/canary/test_maintainability_ratchet.py::test_current_repository_debt_is_reviewed_without_line_count_pins 报 unreviewed finding: module_metric_budget:loopx/chat_actions.py：模块当前 1604 行，超过 ledger 里已评审的 1590。结果是每条 PR 的 test-shard 都挂在同一个用例上、全部合不了，包括本车道正在等的管家栈和 owner 待决的三条。

我先在干净的 origin/main worktree 上复现，再核对 main 自己的 Python Tests run 35176730888 的 test-shard (2)，两处失败文本一致，所以这确实是一个仓库级阻塞，而不是本 PR 自己引入的债务。

改动思路

canary 对模块体积债务给出的处置方式是唯一的：债务在签入的 ledger 里结清，而不是走 reviewed exception——其渲染文本原话就是「refresh the reviewed ceiling in module_metric_baseline.json for the growth this review accepts」，也就是说这次编辑本身就是要评审的判断。因此本 PR 只改这一行，把上限刷新成本次评审接受的 1604，并在 PR 正文里交代增长来源与归属判断。

我没有选择「把增长抽出去」这条更漂亮的路，理由是三处已合并的修复恰好都加在同一个结算宿主上，而现在有三个在飞 PR（#4590、#4600、#4602）正在改这个文件；此刻抽取等于在三条未完成改动下面重写同一段代码，冲突成本高于收益，而且会把 owner 待决的那几条 PR 一起拖住。

具体改动

• loopx/canary/module_metric_baseline.json：loopx/chat_actions.py 的 lines 从 1590 改为 1604。any_count 保持 52 不动（实测 45，仍有余量），模块继续保留自己的条目，不使用 1500 行的默认上限，债务保持可见、有界、可回退。

对主干的风险

风险面很窄：只动一个被 canary 直接读取的 JSON 数字，不改变任何运行时、前端、权限或评分行为。需要明确的是，这次编辑只判断「增长已经被接受」，它不会阻止再次增长——下次再涨仍会红，仍要重新评审。增长的归属我也写进了提交信息：1449（#4567 设定上限时）→ 1520（#4582）→ 1575（#4585）→ 1604（#4587），三次都是把按 lane 的结算结果加在同一个 Chat action 结算宿主上，而不是新开第二条结算路径，因此判断它属于该模块。

可复现的对照：改动前在干净 origin/main 上该用例失败；改动后 uv run --extra test python -m pytest tests/canary -q 为 21 passed，本 head 的全部必过检查转绿（含四个 test-shard、kernel-static-checks、dashboard-acceptance、merge-gate）。

我的整体评价

这是一次把仓库从红拉回绿的窄修复，判断依据可复现、范围可回退，且没有用「放宽默认上限」来换绿。建议在该 head 的必过检查已全绿的前提下合并。

Approval conclusion (author-owned PR; GitHub blocks formal self-approval)

Head: bf2b283

English verdict: APPROVE