docs(pm): batch default back to 3 on the maintainer's ruling — ceiling 5 unchanged (#18125) - #18128

Fixes #18125

Ruling

The maintainer, in the skills seat's chat at 2026-09-14T03:45Z, verbatim and untranslated: 「并发2 还是太慢了，默认恢复3吧」. It supersedes lock 3's default (PR #18072, commit 7ef05f997, 「batch 默认 2」). The maintainer ceiling 5 stays. Ruling C (#17971, 「C. approve 后不管后续改动都由席位落地:」) governs the landing: this PR stays a DRAFT; the seat does the four-piece; nothing here is readied, queued, armed or approved by the dev.

Change — one line

.claude/skills/pm-dispatch/SKILL.md line 60, the batch:N row of the 〈入口与角色〉 argument table:

• before: | batch:N | 同时在飞的 dev 上限 | 默认 2;N 的维护者天花板 5 |
• after: | batch:N | 同时在飞的 dev 上限 | 默认 3;N 的维护者天花板 5 |

(The row is quoted with N standing in for the angle-bracket placeholder the file uses, so the body survives the sanitizer; the file itself is unchanged in that respect.)

Equal-line and byte-neutral: 812 lines before and after (ceiling 812, scripts/pm/check-skill-line-ratchet.mjs:320), 73524 bytes before and after, one insertion / one deletion in git diff --stat ca7886047 06c10152b. Nothing else moves: write-identity locks 1, 2, 4, 5, LOCK_DEPTH_HOLD, the same-file serial rule and the ceiling 5 are untouched. The seats' Routine prompts are the seats' own to update on landing (card body).

Premise readings (all against origin/main = ca7886047, worktree created 2026-09-14T03:50:37Z)

• P1 holds (read 2026-09-14T03:51Z): SKILL.md line 60 read 默认 2; git grep -n for the literal 默认 followed by a backticked 2, over .claude AGENTS.md CLAUDE.md, returned exactly one hit, .claude/skills/pm-dispatch/SKILL.md:60.
• P2 holds (read 2026-09-14T03:51Z): references/core-rules.md is 151 lines and states no batch DEFAULT. grep -n batch hits: line 11 「并行度以 batch 封顶,验证锁到达深度 ≥ LOCK_DEPTH_HOLD(2)即等;同批按构造文件面不相交。」 (the verify-lock depth, a different number) and line 37 「插队标签可超 batch 立即派发,⛔ 不豁免同文件串行、深度等待与认领协议。」. grep -n 默认 hits lines 7, 17, 18, 52, 77, 139, 140 — none is about batch. So there is no mirror line, and core-rules.md is untouched (151/151); the card body's "core-rules mirror line likewise" is superseded by the claim comment's reading, which this grep confirms.
• P3 holds (read 2026-09-14T03:51Z): SKILL.md is 812 lines at ceiling 812; sed -n '733,754p' SKILL.md | md5sum = 3327d02c56f8a0eca88569dad2270f32. Same two readings on HEAD 06c10152b after the edit: 812 lines, md5 3327d02c56f8a0eca88569dad2270f32.
• P4 holds (read 2026-09-14T03:52:44Z–03:53:16Z): git ls-remote --heads origin listed 1106 heads; the 6 claude/issue-18xxx heads were compared to main through REST GET .../compare/main...BRANCH and all 9 open PRs through REST GET .../pulls/N/files (page count 9, fewer than 100, so the listing is complete): zero hits on pm-dispatch/SKILL.md or core-rules.md in any of them. Scope declared: open PRs plus this wave's issue-18xxx heads; the 62 older keyword-matched heads (seat session branches pm-dispatch-*, old issue branches) were listed but not compared.

Gates (run on the working tree at HEAD 06c10152b, 2026-09-14T03:55Z–04:01Z; every exit captured by redirect-then-$?)

Derived with node scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack (no paths; change set from the merge base ca7886047; the --repo assertion held): 16 commands — 9 matched by path, 7 whole-tree. All 16 exit 0:

• pnpm check:pm-skill-ratchet — exit 0 (ratchet green; widest-table-row pins and ceilings unchanged)
• pnpm check:skill-frame-sync — exit 0 (「the one declared copy of the decision frame is internally coherent … 74 markdown files scanned for undeclared copies」)
• pnpm check:pm-governed-prose — exit 0 (「2 instruction surface(s) name all 5 registered governed surfaces … and claim no others」)
• pnpm check:pm-skill-id-lint — exit 0 (27 files clean)
• pnpm check:pm-governed-merges — exit 0
• pnpm check:nul-bytes — exit 0 (8643 text files, no raw control bytes)
• node scripts/pm/check-governed-queue-guard.mjs --self-test — exit 0 (233 cases)
• pnpm check:agent-test-spelling — exit 0
• node scripts/check-closing-keyword-parity.mjs and its --self-test — exit 0 / 0
• node scripts/check-comment-mask-corpus.mjs — exit 0 (6747 files, 0 disagree)
• pnpm --filter @objectstack/lint run check:doc-formula-expressions — first run exit 3 「PREREQUISITE NOT MET — @objectstack/formula is not built」 (not a measurement); after pnpm exec turbo run build --filter=@objectstack/formula --filter=@objectstack/lint under os-verify-lock.sh (「VERDICT command-exit 0 · held the lock 167s」), rerun exit 0 (「22 record-scoped formula example(s) across 438 files … judged clean」)
• pnpm check:doc-authoring, pnpm check:driver-memory-census, pnpm check:refd-timer-probe, pnpm check:watch-hint-literal — exit 0 each

Reconciliation (--ran with COMMAND :: exit CODE lines, 2026-09-14T04:01:47Z): 「✓ dispatch-gates --ran: 16 derived famil(ies) accounted for — 16 run, 0 NOT-MEASURED (a DERIVED zero — all 16 recorded an exit code and none of them is 3).」

Tied family not on the derived list, run anyway: node scripts/check-skill-frame-freshness.mjs (--self-test exit 0, scan exit 0: 「the decision frame in this tree is current with origin/main」). CI-measured only, not runnable here: check-governed-queue-guard.mjs on the event payload.

Lint, narrowed and declared: eslint --no-inline-config --format json .claude/skills/pm-dispatch/SKILL.md — exit 0, 1 file, 0 errors, 1 warning 「File ignored because no matching configuration was supplied」. Population read from eslint.config.mjs: every files: block matches only **/*.{ts,tsx,mts,cts,js,jsx,mjs,cjs} (six blocks; COMMENT_SWALLOW_FILES is the same glob), so a .md file is outside the linted population. Invariance: the config never enables type-aware linting (its own line 328: no parserOptions.project, no typed rules), so a one-line edit to an unlinted file cannot move the verdict of any linted file; the repo-wide pnpm lint is CI's run.

dispatch-gates --tier was read for the claim; its model line is not reproduced here (model-free rule).

Changeset

None owed. The Check Changeset job (.github/workflows/pr-automation.yml, job changeset-check) reads exactly two exemptions — the skip-changeset label and the changesets release PR pinned by branch and author — and no path exemption, so the label is the declaration. The diff publishes nothing: .claude/** is in no released package's files[] (fast-lane class per the dev definition). The label is applied with the additive POST .../issues/N/labels and read back; the read-back is recorded in the report comment on #18125.

维护者速读（草稿）

改了什么:PM 派发技能 SKILL.md 的 batch 参数默认值从 2 改回 3;上限 5 不变;只此一行。

为什么改:维护者裁决「并发2 还是太慢了，默认恢复3吧」;lock 3 落地的默认 2 由此被取代。core-rules.md 本就没写默认值,故无需同改。

风险与代价(含回滚):并发默认回到 3 意味着同一时刻多一个 dev 在飞,共享容器的验证锁排队会略长;其余四把写身份锁、验证锁深度等待、同文件串行规则均不动。回滚 = 把该行的 3 改回 2,一行、零副作用。

席位意见:(留空,席位定稿成评论)

你要做的:确认后由授权账号 approve,席位按裁决 C 落地;各席位自行更新自己的 Routine 提示词。

Acceptance notes

• Dispatch vs dev definition: the dispatch asked for a two-line 维护者速读; the dev definition sets five paragraphs, and the definition wins on conflict, so the five-paragraph form is used with the two-line business content inside it. Noted, no card.
• noted, not filed: the card body says the core-rules mirror line changes "likewise"; the tree says there is no such line (P2 above). The claim comment already carries the correction. 承接者:无 (nothing to land).
• noted, not filed: the first check:doc-formula-expressions run exited 3 on a fresh worktree because @objectstack/formula and @objectstack/lint are not built by pnpm install; the gate's own text says so and prescribes the build. Behaviour by design (Absence must be loud), not a defect. 承接者:无.
• Out-of-scope findings of the three filing classes: none.
• Clause-②: no

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