[finding] guard-main-checkout hooks' remediation text still teaches the unhardened worktree recipe (no --no-track) — the copy an agent reads at the moment of the blocked action

[zhuangjianguo]

Measured by the ui#6880 fold flight (PR #6976's "Not in this PR" section) and re-confirmed at triage: .claude/hooks/guard-main-checkout.sh:57 and .claude/hooks/guard-main-checkout-bash.sh:544 emit the worktree recipe WITHOUT --no-track as their remediation text — the exact text an agent reads at the moment it is about to run the command. PR #6976 hardens the prescribed recipe in CLAUDE.md/AGENTS.md; the hazard survives in the hooks' copy, which is the higher-leverage one (delivered at the point of action).

Scope when dispatched: align both remediation strings to the hardened form; re-run the hook selftests per the hooks' own change discipline; update any selftest case pinning the old string as part of the same change. Governed surface (.claude/**) ⇒ draft PR, human merge. ⛔ The historical changeset .changeset/6208-worktree-recipe-fetch-base.md quotes the old form as a record of a past change — leave it alone (adjudicated in PR #6976).

Sibling: the objectstack twin card covers that repo's hooks, which carry the same gap plus a second one (based on unfetched local main). Refs: PR #6976 · ui#6880 · objectstack#13052.

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[huangyiirene]

Claim: PM loop round 1 (skills lane, seat post objectstack#7623)
Session: session_01EnE7G31tqbxN1rqpQmzurT
Branch: claude/issue-6977-hook-no-track
Worktree: objectui-issue-6977
Domain: domain:skills
File surface: .claude/hooks/guard-main-checkout.sh, .claude/hooks/guard-main-checkout-bash.sh, and their selftest scripts if present (stop on breach; explain in the report)
Container & model: S-sized but not mechanical (governed hook text) → M treatment, mode:subagent, model: opus — objectstack's dispatch-gates.mjs --tier has no jurisdiction over this repo (its own header says a card landing in another repo derives nothing there); tier is the PM's judgment call per the same run's tier rule.
Clause-②: no — agent-infrastructure remediation text, no published contract face.
Serial constraints cleared: none — zero open PRs touch .claude/hooks/** in this repo (open-PR listing read this hour; PR #6984 is AGENTS.md only, dependabot PRs are lockfile/deps). Cross-repo sibling objectstack#13663 (the twin) is dispatched this same round by this seat: disjoint repos and files, no read-coupling.

Premise re-verified on this repo's origin/main this hour before this claim, and it is NARROWER than the objectstack twin: both hooks already print git fetch origin main … origin/main (the ui#6208 class is fixed here) — the surviving gap is --no-track only (grep -c "no-track" over .claude/hooks/: 0). The fix is additive --no-track, not a recipe rewrite.

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[huangyiirene]

Dev claim (companion to the PM claim above — same seat, dev side).

Session: session_01EnE7G31tqbxN1rqpQmzurT
Branch: claude/issue-6977-hook-no-track
Worktree: /home/user/objectui-issue-6977 (created with --no-track off freshly fetched origin/main, base 1b1d772)
Repo: objectstack-ai/objectui only — the objectstack twin (objectstack#13663) was not touched from this seat.

Comments re-read before the first edit: the PM claim is the only prior claim on this card and it names this same session, so there is no competing in-flight work here.

PM premise re-tested independently on the freshly fetched tree, and it holds exactly as stated — narrower than the objectstack twin's:

• grep -rc "no-track" .claude/hooks/ = 0 across all seven files there (four guards, three self-test matrices).
• Both guards already print the fetch-hardened base (git fetch origin main … origin/main) at guard-main-checkout.sh:57 and guard-main-checkout-bash.sh:544, so the ui#6208 class is already repaired in this repo.
• The only surviving divergence is the missing flag. Fix is additive; no recipe rewrite, no widening.

Second PM assumption tested — selftests. This repo does carry self-test scripts for these hooks, but the answer splits two ways and both halves are measurements, not assumptions:

• .claude/hooks/ holds four guards and three matrices. There is no guard-main-checkout.selftest.sh — that one guard has no matrix at all.
• No self-test case pins either remediation string, so none needed updating in this change. All three matrices were re-run anyway, before and after the edit: 121 / 41 / 36, 0 failed each, in both runs.

File surface actually touched, matching the claimed surface with no additions: .claude/hooks/guard-main-checkout.sh, .claude/hooks/guard-main-checkout-bash.sh, plus .changeset/6977-hook-remediation-no-track.md. .changeset/6208-worktree-recipe-fetch-base.md left untouched as adjudicated, confirmed mechanically by check-changeset-overwrite (0 modified, 0 deleted).

Draft PR: #7000. Governed surface, human merge — not flipped ready, not enqueued, no auto-merge armed.

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Generated by Claude Code

[huangyiirene]

os-dev-report

{
 "issue": 6977,
 "status": "done",
 "branch": "claude/issue-6977-hook-no-track",
 "pr": "https://github.com/objectstack-ai/objectui/pull/7000",
 "premise_still_valid": true,
 "summary": "Added --no-track to the worktree recipe both PreToolUse guards print as their remediation text: .claude/hooks/guard-main-checkout.sh:57 and .claude/hooks/guard-main-checkout-bash.sh:544. One word per file, net 0 lines in both, plus an empty-frontmatter changeset. PM's narrow premise re-tested on the freshly fetched tree and it holds exactly: grep -rc no-track over .claude/hooks/ was 0 across all seven files there, and both guards already printed the fetch-hardened base (git fetch origin main ... origin/main), so the ui#6208 class is already repaired here and the missing flag was the only surviving divergence. Additive fix, no recipe rewrite, no widening. PM's selftest assumption splits two ways, both measured: this repo DOES carry matrices for these hooks, but there is no guard-main-checkout.selftest.sh at all (.claude/hooks/ holds four guards and three matrices), and NO selftest case pins either remediation string, so no case needed updating; all three matrices were re-run anyway, unchanged. Three things examined and deliberately left alone, each argued in the PR body: the historical changeset 6208-worktree-recipe-fetch-base.md (adjudicated; check-changeset-overwrite confirms 0 modified / 0 deleted), the two -cmp comparison-tree lines in CLAUDE.md / AGENTS.md (no branch created, explicit ref from the caller, so no upstream keys to write), and guard-tree-enum.selftest.sh:99 (a command payload fed to a different guard to assert ordinary commands pass through it -- test input, not text any agent is told to run; judged not a defect, so no finding filed, and flagged here so PM can overrule). Governed surface honoured: PR is DRAFT, not flipped ready, not enqueued, no auto-merge armed; check-governed-queue-guard --test on this diff returns GOVERNED, 2 of 3 paths. Two platform notes: (1) PR create appended its own session-URL attribution footer beneath the one I wrote, so the body carries the footer twice -- left as-is because a PATCH to remove the duplicate would downgrade the remaining session URL to the bare form (measured create-only behaviour), and the duplicate is cosmetic; (2) the PR reads mergeable_state=behind because main moved after my base (base 1b1d772, PR base now a5a799d) -- no conflict in my three files. objectstack was not touched from this seat.",
 "tests": "All nine checks re-run at final head efbfb15 (git rev-parse --short HEAD from that run) as one &&-joined command under the shared verify lock: VERDICT command-exit 0, held 11s. Heavy steps serialised through bash /home/user/objectstack/scripts/pm/os-verify-lock.sh (objectui ships no lock script of its own) with OS_VERIFY_LOCK_SLOT=ui6977; pnpm install waited 92s for a sibling holder, then ran 15.8s. HOOK SELFTESTS (the only gate targeting .claude/hooks/**, per .github/workflows/hook-selftests.yml): guard-main-checkout-bash 121 passed 0 failed, guard-shared-stash 41 passed 0 failed, guard-tree-enum 36 passed 0 failed. Identical baseline run BEFORE the edit (121/41/36, 0 failed) -- the expected direction here, not a weak result, because no case pins the remediation string; verified by grepping four distinctive fragments of the two block messages (fetch origin main / dedicated worktree / Blocked: editing on the shared / WRITES into the shared) across .claude/hooks/*.selftest.sh and scripts/, no match in any selftest. BEHAVIOURAL CHECK (the real coverage for guard-main-checkout.sh, which has no matrix): both hooks invoked directly with a payload targeting the shared primary checkout; each exits 2 (blocked, as designed) and prints ' git fetch origin main && git worktree add --no-track ../objectui-TASK -b BRANCH origin/main' with $name interpolated -- byte-for-byte the form CLAUDE.md:16 and AGENTS.md:234 prescribe. That emitted recipe was then fed back through all three of this repo's Bash guards (guard-main-checkout-bash, guard-shared-stash, guard-tree-enum): all three exit 0, so the text it now teaches is runnable and not self-blocked. REPO GATES, each exit captured after redirect-to-file, never through a pipe: check-control-bytes exit 0 (5809 tracked text files scanned), check-changeset-presence exit 0, check-changeset-no-major exit 0, check-changeset-overwrite exit 0 (1 added, 0 modified, 0 deleted -- the mechanical proof the adjudicated historical changeset was left alone), check-shell-escape-residue exit 0, check-governed-queue-guard --self-test exit 0 (132 cases), bash -n clean on both edited files, plus a manual control-byte scan of all three diff files (grep -naP over the C0 set, no match). MEASUREMENT, reported because absence is the answer: nothing in this repo lints shell files' contents. Verified on this tree rather than taken from the workflow header asserting it -- eslint.config.js scopes every block to **/*.{ts,tsx}, and there is no shellcheck step anywhere (the only three matches in the repo are two prose mentions and one '# shellcheck source=' directive inside e2e/live/ci/start-backend.sh). check-shell-escape-residue reads fenced blocks in AGENTS.md, CLAUDE.md, skills/ and content/docs/ and does not reach .claude/hooks/. So the three matrices plus the direct invocations above are the whole of the coverage available for this diff. CHANGESET CONVENTION, verified rather than assumed: check-changeset-presence reports no changeset is owed here (3 files changed, 0 published source of a released package); one is shipped anyway with EMPTY frontmatter, which scripts/check-changeset-presence.mjs treats as a first-class pass, matching this repo's three precedents for this diff shape (6880-worktree-recipe-no-track, 6208-worktree-recipe-fetch-base, 6089-hook-selftests-step-names-drop-counts). No skip-changeset label applied: in objectui that label is a phantom -- scripts/__tests__/ci-cd-pipeline-doc.test.ts pins that nothing under .github/ or scripts/ may mention it, so it exempts nothing. CI itself not waited on, per the report-at-draft-PR contract.",
 "mcp_calls": "4 - create_pull_request 1, pull_request_read 1 (mandatory PR-body read-back), add_issue_comment 2 (dev claim + this report). Issue body and all comments were read through the zero-quota web channel (embedded JSON payload), not MCP; the PR-body read-back had to use MCP because the conversation body is lazily loaded and absent from the PR page's embedded payload.",
 "open_questions": [],
 "out_of_scope_findings": []
}

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[huangyiirene]

ACCEPT — PR #7000; governed terminal: parked as draft, both approvers requested

Reviewed against GitHub, not against the report's self-description: draft ✓ · base main ✓ · Fixes #6977 first line ✓ · 3 files — the two guards at +1/−1 each with exactly --no-track inserted into the printed recipe and nothing else, plus an empty-frontmatter changeset (ships nothing; the repo's verified convention with three precedents). The adjudicated historical changeset .changeset/6208-worktree-recipe-fetch-base.md is untouched (0 modified / 0 deleted, gate-confirmed).

Spot readings: the pre/post selftest identity (121/41/36, 0 failed both sides) is the EXPECTED direction, not a weak result — no selftest case pins the remediation string, corroborated by the diff touching no selftest file while all matrices pass on both sides. The behavioural check (each hook exits 2 on a shared-checkout payload and emits the hardened recipe; that recipe re-fed through all three Bash guards exits 0) is the real coverage for guard-main-checkout.sh, which ships no matrix — measured, and the right instrument. CI at review time: 25/30 checks completed, all green or skipped; 4 test shards + Type Check still running (must be green at merge); Hook Self-Tests and Governed Surface Queue Guard already green.

Deviations, both accepted: the dev's judgment call to leave guard-tree-enum.selftest.sh:99 alone (test payload fed to a different guard, not text an agent is taught) — concur, no finding owed; the duplicated attribution footer on the PR body (create-channel side effect, cosmetic) — left as measured.

Terminal: .claude/** is governed, and this diff carries a prose-bearing .md (the changeset), so under the maintainer's 2026-08-26 分流 verbatim (「只有包含md文件时需要推给我审核」) this PR takes the maintainer-review path: it stays DRAFT, os-zhuang + hotlong are both requested, and this card moves to pm:awaiting-maintainer in the same pass. Recorded for the veto window, not decided by this seat: if empty-frontmatter changesets are ruled OUT of the md limb (they are release mechanics, not instruction or published prose), PRs of exactly this shape become seat-self-landable under the pure-code lane next time. The objectstack twin (objectstack#13663, no changeset file by that repo's convention) is unaffected by this question.

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