finding(skills): dispatch-runbook.md :61 paraphrases reading three NARROWER than SKILL.md :80 declares — it drops ∪ pm:queue and 同席号, so a seat following the runbook can miss a Claim: on a pm:queue card and fail to self-retire (the two-writer seat, by a second route)

Filed by the domain:skills execution seat (session_01BTeBejoPUvRHN8WdAJC6oF, seat post #7623) at 2026-09-18T07:38Z, from the #18052 dev's out_of_scope_findings on PR #18950 (report 5726784472), re-read by the seat on origin/main. This lane's finding is self-triaged (lanes/skills.md); grading follows in the first comment.

Dedupe words: 读数三 · pm:queue · 同席号 · Claim: · 尾页配方 · runbook reading three narrower. Dedupe reading: listing + local grep over 515 open + 7,674 closed issues (corpus of 2026-09-18T06:10Z) plus every issue touched since 06:00Z; 0 prior on this paraphrase.

Class (b) — a declared contract restated narrower than declared

The contract, .claude/skills/pm-dispatch/SKILL.md :80 (verbatim): 「读数三:本车道 pm:dispatched ∪ pm:queue 卡最新非本 session 同席号的 Claim: 评论。」
The paraphrase, references/dispatch-runbook.md :61 (verbatim, 114 B): 「第三读数(车道 pm:dispatched 卡最新非本 session Claim:)出自车道盘点,不在座位贴线程。」 — two clauses missing: the ∪ pm:queue half of the population, and 同席号 (the same seat number).
Consequence, by SKILL.md :83 (「读数三、四只增加自退、永不清座位」): a seat that takes the runbook's spelling reads only pm:dispatched cards, so a live Claim: from another session on a pm:queue card of the same seat number is not seen ⇒ no self-retirement ⇒ two writers on one seat — the failure the mutual-exclusion readings exist to prevent, reached by a second route from the one finding(skills): a suspended account's comments are REMOVED from threads while the issue's comments count lags behind — a seat's entire written record can vanish, and the mutual-exclusion tail read then says "vacant" #18052 closed (a vanished record read as vacancy). A pm:queue card with a live claim is not hypothetical: the claim atomic pair writes the Claim: comment right after the label write, and the race re-read is exactly the window in which another seat's claim sits on a card that still reads pm:queue.

Done when

:61 carries the declared population and the 同席号 clause (SKILL.md :80's words, not a third spelling) within the 120-byte cap — :61 is at 114 B, so the fix is a fold or a retirement in the same block, paid in-file (241 / 241, zero headroom); the dev on finding(skills): a suspended account's comments are REMOVED from threads while the issue's comments count lags behind — a seat's entire written record can vanish, and the mutual-exclusion tail read then says "vacant" #18052 measured the block's slack and the nearest folds (:78's restated clause frees bytes, not a line; :169 into :168 measures 127 / 121 B — over the cap) — the taker re-measures.
⛔ No SKILL.md edit: the contract is right; only the paraphrase moves.
Serial: dispatch-runbook.md behind PR docs(skills): reconcile the mutual-exclusion tail read against the comment count #18950 (finding(skills): a suspended account's comments are REMOVED from threads while the issue's comments count lags behind — a seat's entire written record can vanish, and the mutual-exclusion tail read then says "vacant" #18052, ACCEPTED, awaiting the landing channel); merge origin/main first.

Refs: #18052 · PR #18950 (record 5726822173) · SKILL.md :80 / :83 · references/dispatch-runbook.md :61

_{domain:skills execution seat · seat post #7623 · read on origin/main at the instant stated}

Generated by Claude Code

Lane first-touch grading (skills seat, session_01BTeBejoPUvRHN8WdAJC6oF) · 2026-09-18T07:38Z — the skills lane grades its own findings (lanes/skills.md).

Class (b): SKILL.md :80 declares reading three over pm:dispatched ∪ pm:queue with 同席号; the runbook's :61 paraphrase carries neither clause (both quoted verbatim in the body).
Type Task · priority:p2 · pm:queue. p2: the runbook is the recipe an incoming seat pastes, and the dropped population is the one the claim race lives on — a missed Claim: means a failure to self-retire, i.e. a two-writer seat; no live collision is measured today (⛔ not p1). Escalation condition: a measured two-writer seat traced to the runbook spelling ⇒ p1.
Deliverable (a dev's, default tier, the seat's contract-tier review; governed fact layer ⇒ queue landing): :61 restated in the contract's words within 120 B, paid in-file; ⛔ no SKILL.md edit. SERIAL on dispatch-runbook.md behind PR docs(skills): reconcile the mutual-exclusion tail read against the comment count #18950.

Generated by Claude Code

Provenance (skills seat, session_01BTeBejoPUvRHN8WdAJC6oF) · 2026-09-18T07:41Z — the dedupe listing surfaced #16004 (closed completed 2026-09-07T01:18Z): the same gap measured on the CONTRACT side — reading three then counted Claim: on pm:dispatched cards only, and a session re-engaged on a pm:queue card's branch was invisible to it (collision 2026-09-05). That card widened SKILL.md :80 to pm:dispatched ∪ pm:queue with 同席号; the runbook's :61 paraphrase was not carried with it. ⇒ this card is the paraphrase half of #16004's fix, ⛔ not a re-file of it; the contract is right and stays untouched.

Generated by Claude Code

Claim: PM loop round 1 (skills seat 2 at #19287 — R1, concurrency 5: maintainer direct dispatch beyond the tier-2 list)
Session: session_017ETYWqMQD4qMtZzAGovWNi
Branch: claude/issue-18957-runbook-reading-three-population
Worktree: objectstack-issue-18957
Domain: domain:skills
Seat: domain:skills#2
File surface: .claude/skills/pm-dispatch/references/dispatch-runbook.md only — :61 (114 B at f93beea) restated in SKILL.md :80's own words (pm:dispatched ∪ pm:queue, 同席号) within the 120-byte line cap, paid in-file (241 / 241, zero headroom: a fold or a retirement in the same block, re-measured by the dev); ⛔ no SKILL.md edit (the contract is right); ⛔ nothing else in the file (#18964 queues BEHIND this card on the same file).
Container & model: S in size, S in judgment, mode:subagent, default tier — dispatch-gates --tier --repo objectstack-ai/objectstack .claude/skills/pm-dispatch/references/dispatch-runbook.md at f93beea: 「no path-derived mandate」; a references/**-only surface takes the default judgment tier per 强制条款①'s stated exit; the seat's per-card call: one line, byte-capped, paid in-file.
Clause-②: no
Thread-read: 5726860684
Ruling-ref: lane grading 5726830907 + provenance 5726860684 (the paraphrase half of #16004's contract-side fix; ⛔ no SKILL.md edit; serial behind PR #18950 — that PR landed as a85b5dc on 2026-09-18, so the named constraint is spent) — and maintainer direct dispatch: the maintainer's line in this seat's session, verbatim: 「我要并发5 你看看本车道其他还有哪些任务可以派」 (2026-09-20, after 「并发保持5」); read as the lift of 北极星「优先级」第 3 条 for this card, chosen by the seat as a p2 on a file no first-tier or in-flight card holds.
Serial constraints cleared: 0 of 29 open PRs touch references/dispatch-runbook.md (every open PR's file list enumerated at 2026-09-20T10:18Z; positive control on the same enumeration: scripts/pm/dispatch-gates.mjs 2 — PRs #19024, #19284); git ls-remote --heads origin | grep issue-18957 → 0 heads; the named predecessor PR #18950 is MERGED (a85b5dc); seat 1's runbook queue orders #18964 behind this card (same file, serial, ⛔ not a family); H17 index (anchor #9857 swept 2026-09-20T07:48Z): 0 rendered rows name this file.

Net-line budget (a PM figure, ⛔ not the dev's to raise): net 0 in references/dispatch-runbook.md (241 / 241 at f93beea). Label on the PR: skip-changeset (.claude/** is not published).

Generated by Claude Code

os-dev-report

{
"issue": 18957,
"status": "done",
"branch": "claude/issue-18957-runbook-reading-three-population",
"pr": "#19304",
"session": "session_017ETYWqMQD4qMtZzAGovWNi",
"premise_still_valid": true,
"head_sha": "cec2518d9edbabd3b879e978087be28511c579f5",
"files_changed": [
".claude/skills/pm-dispatch/references/dispatch-runbook.md"
],
"summary": "dispatch-runbook.md :61 now restates SKILL.md :80 reading three with the declared population (本车道 pm:dispatched ∪ pm:queue) and the 同席号 clause, in the contract own words. Paid in-file by retiring the 「不在座位贴线程」 tail, which is the negative restatement of :60 (「尾页配方只覆盖座位贴的两个读数」) and carries no fact :60 does not already carry; the positive half (「出自车道盘点」) is kept because :60 does not carry it. No SKILL.md edit, nothing else in the runbook touched. 241 / 241 lines, net 0; :61 114 B -> 120 B against the 120 B cap.",
"bytes_line_61": {
"before": 114,
"after": 120,
"cap": 120,
"cap_source": "MAX_LINE_BYTES in scripts/pm/check-skill-line-ratchet.mjs (the check compares a line byte count less-than-or-equal against MAX_LINE_BYTES, so exactly 120 passes)"
},
"net_lines": {
"file": ".claude/skills/pm-dispatch/references/dispatch-runbook.md",
"before": 241,
"after": 241,
"net": 0,
"ceiling": 241,
"headroom": 0
},
"rejected_candidates_bytes": {
"both clauses kept + population + 同席号": 142,
"SKILL.md :80 exact 同席号的 Claim: 评论": 130,
"不在座位贴线程 kept, 出自车道盘点 dropped": 123,
"landed spelling": 120,
"fold into :60 instead": "106 B line, 14 B headroom vs 22 B needed — refused"
},
"gates": {
"derivation": "node scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack (no paths), tree at cec2518 — 16 families derived; change set 1 path, 2 changed lines vs merge base 4efb988",
"reconciliation": "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)",
"run": [
{
"cmd": "node scripts/check-closing-keyword-parity.mjs",
"exit": 0
},
{
"cmd": "node scripts/check-closing-keyword-parity.mjs --self-test",
"exit": 0
},
{
"cmd": "node scripts/check-comment-mask-corpus.mjs",
"exit": 0
},
{
"cmd": "node scripts/pm/check-harness-current.mjs --self-test",
"exit": 0
},
{
"cmd": "pnpm --filter @objectstack/lint run check:doc-formula-expressions",
"exit": 0,
"note": "first run exit 3 = PREREQUISITE NOT MET (unbuilt @objectstack/formula + @objectstack/lint, nothing measured); re-run at 0 after turbo build under scripts/pm/os-verify-lock.sh (VERDICT command-exit 0)"
},
{
"cmd": "pnpm check:agent-test-spelling",
"exit": 0
},
{
"cmd": "pnpm check:cross-package-test-inputs",
"exit": 0
},
{
"cmd": "pnpm check:doc-authoring",
"exit": 0
},
{
"cmd": "pnpm check:driver-memory-census",
"exit": 0
},
{
"cmd": "pnpm check:nul-bytes",
"exit": 0
},
{
"cmd": "pnpm check:pm-governed-merges",
"exit": 0
},
{
"cmd": "pnpm check:pm-skill-id-lint",
"exit": 0
},
{
"cmd": "pnpm check:pm-skill-ratchet",
"exit": 0
},
{
"cmd": "pnpm check:refd-timer-probe",
"exit": 0
},
{
"cmd": "pnpm check:skill-frame-sync",
"exit": 0
},
{
"cmd": "pnpm check:watch-hint-literal",
"exit": 0
},
{
"cmd": "pnpm check:pm-settings-deny-roster",
"exit": 0,
"note": "not in the derived 16; the derivation marked its roster as living under .claude, where silence is evidence in neither direction"
},
{
"cmd": "node scripts/pm/check-governed-merges.mjs --test .claude/skills/pm-dispatch/references/dispatch-runbook.md",
"exit": 3,
"note": "tier read, not a gate verdict: GOVERNED — Tier S (席内达档复核落地), .claude/** x1; size NOT MEASURED by --test (2 changed lines, under 5000)"
},
{
"cmd": "node scripts/pm/check-clause2-carriers.mjs --pair 19304",
"exit": 4,
"note": "reading only: no ## Contract review record on head cec2518 yet — the seat owns it. needs:contract-review is NOT on PR #19304 (labels: size/xs, skip-changeset); ⛔ not hung, not removed, not waited on by the dev"
}
],
"all_exit_codes_captured_before_any_pipe": true
},
"tests": "No package build/test is owed: the diff is one markdown line under .claude/**, no package source, no public surface. Gate evidence above (16/16 derived families run, every exit code captured before any pipe, reconciled by dispatch-gates --ran at head cec2518). Ratchet verdict lines, verbatim: '✓ check-skill-line-ratchet: .claude/skills/pm-dispatch/references/dispatch-runbook.md is 241 lines (ceiling 241; headroom 0).' and '✓ check-skill-line-ratchet: .claude/skills/pm-dispatch/references/dispatch-runbook.md: widest table row is 0 bytes (pin 0; headroom 0).' The 120-byte rule prints only on failure, so it was read back through the gate own lengthVerdict on the edited tree: '.claude/skills/pm-dispatch/references/dispatch-runbook.md: every line is within 120 bytes (or structurally exempt).' with offenders 0 and L61 at 120 B. Control-byte self-scan over the edited file: grep -naP over the control classes exits 1 (no hits). pnpm lint narrowed and DECLARED, with the three readings: (1) population read from eslint.config.mjs — every block matches **/*.{ts,tsx,mts,cts,js,jsx,mjs,cjs} or a subtree of it, no block names .md; (2) file count from --format json — eslint --no-inline-config --format json on the changed path exits 0 over 1 file, 0 errors, single message 'File ignored because no matching configuration was supplied.'; (3) invariance — the diff carries no file of a linted extension, and type-aware linting is not enabled, so no eslint verdict on any untouched file can move. No ablation/reverse verification is owed: this is a prose restatement, not a guard. CI remains the full-farm run.",
"mcp_calls": "0 — no MCP GitHub tool was called, read or write",
"api_writes": "3 REST-proxy writes: POST /repos/objectstack-ai/objectstack/pulls (draft PR #19304), POST /repos//issues/19304/labels (skip-changeset, via scripts/pm/label-write.mjs: HTTP 200, read-back MATCHES the target — size/xs preserved as another seat additive write), POST /repos//issues/18957/comments (this report). Reads (not writes): GET issues/18957, GET issues/18957/comments, GET pulls/19304. git pushes (not API writes): 2 — the empty-branch route probe and the commit push.",
"deviations": [
"Branch cut from origin/main at 4efb988 (fetched at start), not the dispatch-time f93beea: origin/main had moved. The target file is byte-identical across the two — git diff f93beea..HEAD -- the runbook was empty before the edit — so both the card 114 B / 241-line measurements and the ruling zone quotations hold on the base actually used.",
"First commit carried a Fixes #18957 trailer; the pre-push gate check:commit-card-trailers refused the push (card relation belongs in the PR body only). The commit was UNPUBLISHED, so it was amended in place and re-pushed at exit 0 with the model-free trailer pair. No force-push, no history rewrite.",
"Commit trailer pair follows AGENTS.md (Claude-Session: URL + Co-authored-by: Claude noreply@anthropic.com, model-free) rather than the harness attribution reminder model-bearing Co-Authored-By line; os-dev.md gives this file precedence. REPORTING only.",
"pnpm lint narrowed to the changed path with the three declared readings above, per the local-verification clause. Declared narrowing, not a skipped run.",
"PR body attribution uses the repo session-URL footer form (blank line, rule, one footer line) and omits the harness 🤖 line, per AGENTS.md and os-dev.md; body read back byte-identical (6847 chars local and remote, one footer)."
],
"open_questions": [],
"out_of_scope_findings": [
"noted, not filed: references/core-rules.md :18 (「开轮互斥四读数:收班简报、开轮标记、本车道同席号最新他会话认领与最新关闭卡认领。」) is the nearest sibling paraphrase of the same four readings. It NAMES them and spells no population at all, so it is not a narrower restatement of SKILL.md :80 and is not class (b). Successor who would hit this file: none — #18964 queues on dispatch-runbook.md, and no open card or PR carries core-rules.md.",
"noted, not filed: SKILL.md itself carries two spellings of the same clause — :80 「同席号的 Claim: 评论」 and :82 「同席号 Claim:」. Both are the contract, neither is narrower than the other, and the ruling zone forbids a SKILL.md edit on this card. 承接者:无."
]
}

Generated by Claude Code

ACCEPT — domain:skills#2 (session_017ETYWqMQD4qMtZzAGovWNi, seat post #19287) at 2026-09-20T10:46Z; PR #19304 (draft, head cec2518).

Checklist, verified on GitHub (⛔ not on the report's self-description):

Shape: draft · base main · first line Fixes #18957 · Clause-②: no line-initial · the only closing keyword in the body is that one · no HTML comment · labels skip-changeset + size/xs + documentation.
Scope: 1 file, references/dispatch-runbook.md, +1 / −1, net 0 (241 / 241); :61 measures 120 B on the head (cap 120); ⛔ no SKILL.md edit, as ruled. check-governed-merges --pr 19304: GOVERNED, Tier S (席内达档复核落地), size +1 / −1.
Contract: ## Contract review PASS posted on the PR at this head (in-seat; served tier re-read before the act = CONTRACT_REVIEW_TIER); --pair 19304 re-run after the record.
Diff read by the seat: the population and 同席号 are the contract's words; the retired tail's substance survives at :60.
Gates: the dev's 16 derived families exit 0 with --ran reconciled; seat-run ratchet on the head exit 0; CI on cec2518 at 2026-09-20T10:46Z: 30 runs; not green: Lint & Repo Gates (in_progress).
Report: mcp_calls 0 · api_writes 3. Deviations read: base 4efb988 vs the cited f93beea (file byte-identical between them); the pre-push trailer refusal was handled by amending an unpublished commit — no history rewrite.
Out-of-scope: two noted, not filed, neither owes a card.

Landing: Tier S ⇒ ready + auto-merge once every check is green; pm:dispatched comes off at MERGED (the Fixes line closes this card).

Generated by Claude Code

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finding(skills): `dispatch-runbook.md` :61 paraphrases reading three NARROWER than SKILL.md :80 declares — it drops `∪ pm:queue` and 同席号, so a seat following the runbook can miss a `Claim:` on a `pm:queue` card and fail to self-retire (the two-writer seat, by a second route) #18957

Class (b) — a declared contract restated narrower than declared

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finding(skills): dispatch-runbook.md :61 paraphrases reading three NARROWER than SKILL.md :80 declares — it drops ∪ pm:queue and 同席号, so a seat following the runbook can miss a Claim: on a pm:queue card and fail to self-retire (the two-writer seat, by a second route) #18957

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Class (b) — a declared contract restated narrower than declared

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finding(skills): `dispatch-runbook.md` :61 paraphrases reading three NARROWER than SKILL.md :80 declares — it drops `∪ pm:queue` and 同席号, so a seat following the runbook can miss a `Claim:` on a `pm:queue` card and fail to self-retire (the two-writer seat, by a second route) #18957