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docs(pm-dispatch): runbook mutex tail-page recipe covers the two seat-post readings; name the third (lane-claim) reading - #10276
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…-post readings; name the third (lane-claim) reading The 互斥最小尾页读法 convention said the mutex needs only two timestamps. The 开轮互斥读法 clause in SKILL.md now mandates a third reading (newest non-self Claim: across the lane's pm:dispatched cards) which comes from the lane inventory, not the seat-post thread — a triage fire following the runbook literally would skip it. Scope the tail-page recipe to the two seat-post readings and point at the SKILL.md clause for definitions (single-sourced, predicate not restated). Ceiling 243 held: the added line is paid by compressing the section's measured-cost narrative to one line per the file's own 行文纪律. Part of #10214 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019T1sSZbQTnLhrK9HhNdNiB
This was referenced Aug 20, 2026
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August 20, 2026 15:47
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Fixes#10214
What
.claude/skills/pm-dispatch/references/dispatch-runbook.md, section 「分诊席读数成本三则」, convention ② (互斥最小尾页读法) said the mutex read needs only two timestamps ("只需两个读数"). Since PR #10208 landed (merged 14:58Z today), the 开轮互斥读法 clause inSKILL.mdmandates a third reading — the newest non-selfClaim:comment across the lane'spm:dispatchedcards — which comes from the lane inventory query, not the seat-post thread. A triage fire following the runbook literally would skip it.The correction scopes the tail-page recipe to the two seat-post readings, names the third reading, and points at the SKILL.md 开轮互斥读法 clause for all reading definitions — the predicate is deliberately not restated (single-sourced per the card's ruling).
Ceiling 243 held (headroom 0, ratchet untouched)
Convention ② grew 3 → 4 lines; paid in the same section by compressing the measured-cost narrative in the section intro 4 → 3 lines, applying the file's own 行文纪律 ("实测叙事至多压成一行 —— 故事住在卡上"). File is 243/243 after the change;
scripts/pm/check-skill-line-ratchet.mjsnot modified.Verification (all at
7e2e5a1, the only commit)Dispatch-named gates plus
dispatch-gates.mjsre-derivation on the actual diff (no paths passed; derived set = 6 gates, all a subset of the named list) — every gate run underscripts/pm/os-verify-lock.sh:pnpm check:pm-skill-ratchet— "✓ check-skill-line-ratchet: .claude/skills/pm-dispatch/references/dispatch-runbook.md is 243 lines (ceiling 243; headroom 0)." (self-test 19 cases pass)pnpm check:pm-skill-id-lint— "✓ check-skill-id-lint: 16 file(s) clean"pnpm check:pm-governed-merges— "✓ check-governed-merges --self-test: 81 assertions"pnpm check:pm-governed-prose— "✓ check-governed-prose: 2 instruction surface(s) name all 5 registered governed surfaces … and claim no others."pnpm check:skill-frame-sync— "✓ check-skill-frame-sync: 4 copies of the decision frame are structurally isomorphic across 3 files"pnpm check:doc-authoring— "✓ doc authoring guard: 380 files clean — no bare metadata literals."pnpm --filter @objectstack/lint run check:doc-formula-expressions(afterpnpm --workspace-concurrency=2 --filter '@objectstack/lint^...' build) — "✓ check:doc-formula-expressions: 22 record-scoped formula example(s) across 406 files / 1415 TS blocks judged clean"pnpm check:nul-bytes— "check-nul-bytes: OK (scanned 6088 text file(s) … no raw ASCII control bytes)."Governed surface
Diff touches
.claude/**— human merge only (Prime Directive #14). Draft PR; never queued, armed, or flipped ready by any seat. Tests/instruction-only change:skip-changeset.Generated by Claude Code