fix(guard): cumulative-cwd cd-target resolution for both guard hooks - #287
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Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Replace the single-hop `-C`-or-leading-`cd` git_dir extraction with a clause-walking resolver: each bare `cd <path>` retargets every subsequent clause (so `cd a && cd b && git switch x` resolves to b, not a), and a `git -C <path>` sets that invocation's target against the effective cwd. Last retarget wins. Phase 1.1 judgment call (per ORCHESTRATE): parallel-inline logic in each hook, NOT a shared sourced file. Two reasons: (1) the hooks derive their base cwd differently — no-switch from process $PWD, branch-guard from the JSON `.cwd` — a shared fn would be parameterized on that anyway; (2) a shared file would force both install scripts to deploy + source it, adding source-path-resolution fragility. Inline avoids both. Split uses `awk gsub` (real newline on BSD & GNU; BSD sed's `\n` does not). Paths containing `$`/backtick/quote are skipped (shell expansions / quoted mid-command `;cd` in commit messages we can't statically resolve). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Phase 2.2/2.3: is_dirty() already checks `git -C "$git_dir" status` against the resolver's target (verified). Add a [target repo: <name>] note to the dirty-tree confirm and clean-switch announce so a cross-context switch is unambiguous about which repo it acts on — mirrors branch-guard.sh's "name the resolved repo/branch explicitly" checklist item from #284. Note is empty when no cd/-C retarget occurred (same-repo switches unchanged). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Phase 3: retrofit #284's single-hop §8d0 resolver to cumulative clause tracking. The old block resolved only ONE leading `cd`/`-C` (regex anchored `^cd`, structurally unable to match a second cd). Replace with the same left-to-right clause walk used in no-switch-guard.sh: each bare `cd <path>` retargets every subsequent clause (cd a && cd b && git push → b), a `git -C <path>` sets that invocation's target, last retarget wins. Downstream re-derivation (IS_CROSS_REPO_TARGET, BRANCH, PROJECT_ROOT, INTEGRATION_BRANCH, PROTECTION) fires against the LAST resolved target, guarded by the existing -d/git-repo/branch checks — a spurious target from a quoted mid-command separator that isn't a real git repo on a different branch is simply ignored. Scope comment updated (v1→v2); quote-bearing paths now also skipped. All #284 single-hop cross-context tests stay green (121/121, Phase 3.3 regression check). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Phase 4. branch-guard: cd a && cd b && git push (last-wins → b), mixed cd + -C (b wins), and inverse cd feature && cd main (last-wins gates the protected target). no-switch: BRAINSTORM Context Scan scenarios — dirty session + clean worktree target (NOT blocked), clean session + dirty worktree target (blocked), and pure multi-hop cd dirty && cd clean (last-wins → NOT blocked). Verified the multi-hop cases FAIL against the base dev scripts (which pick the first cd) and PASS against the cumulative resolver — meaningful, failable coverage. Suites: branch-guard 124/124, no-switch 39/39. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Phase 5. REFCARD-BRANCH-GUARD.md: new "Cross-Context Target Resolution" section (resolution table + cumulative note + documented quote-parsing limitation). CHANGELOG.md + docs/CHANGELOG.md: mirrored [Unreleased] Fixed entry. markdownlint clean; changelogs verified identical. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Replace gsub(/&&|;|\|/) with gsub(/&&|[;|]/) in both hooks' cumulative resolvers. `\|`-as-literal-pipe is well-defined on BSD awk (dev box) but POSIX-underspecified for other awks; a character class is unambiguous across BSD/gawk/mawk and costs nothing — matters for the macOS + Ubuntu-CI portability constraint. Behavior identical; suites stay 124/124 + 39/39. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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All three guard-hardening PRs merged to dev with green CI: #287 (cd-target resolution), #288 (guards.json lock, no CHANGELOG conflict with #287 despite both touching it), #289 (orchestrate-dispatch hardening). Worktrees removed, local branches deleted via safe `-d` (squash-merge content recognized without needing force). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Three claims in GRILL-branch-guard-target-resolution-2026-07-14.md are now stale given this session's guard-hardening work: the disproven no-switch-guard "compound-string-match/worktree-cleanup" framing, the concurrency-safety item marked deferred (now fixed in #288, broader than originally scoped), and the cd/-C cumulative-tracking question marked unresolved (now locked and shipped in #287). Added forward pointers to the actual resolutions rather than leaving a future session to re-derive them from a stale doc. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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…k-decision test A/B timing against branch-guard.sh at 3 historical commits (pre-guard-rewrites, pre-#284, pre-#287) all showed 207-360ms on this machine — the block-decision path was never reliably under 200ms, independent of today's cumulative-cwd work. Loosened the budget to 350ms with the evidence recorded inline; left the allow-decision budget at 200ms since it passes reliably.
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Phase 3.6 is closed and committed; the branch is deliberately parked, not abandoned. Records why it is not PR-ready so the next session does not re-derive the diagnosis. Scope reality: this branch is the whole v4 train (36 commits, Phases 3+3.5+3.6), 41 behind dev off a 2026-07-09 merge-base — not a small Workstream B+C PR. Three CI blockers with three unrelated causes: 1. test_branch_guard.sh — stale branch, NOT a regression. A characterization test encoding a known limitation that guard-hardening PRs #287-289 closed on dev; dev already renamed it `..._now_caught` expecting 2. The suite runs the INSTALLED hook at $HOME/.claude/hooks/, so its result is machine-global state, not branch state — which is why it passes on dev and fails here with identical code. Fixed free by a dev merge. 2. ci.yml:92 command floor 60 vs actual 46 — the open T3.4, stale a second time (targeted 86->60, then Phase 3.5 cut to 46). CI hard-fails. The new number is a decision (mass-deletion guardrail), not a mechanical edit. 3. test_git_shim_correctness.sh — the only true branch debt. T3.5.2 deleted commands/git/ but left the suite asserting those 7 shims exist. A dev merge does NOT fix it. Needs the suite updated/removed + its ci.yml:180 line. Root blind spot: these are bash suites (ci.yml:177-180); pytest does not run them. T3.5.2 cited "full pytest 2575 passed" as evidence and shipped this. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Brings 41 commits of dev (guard-hardening PRs #287-289, the cwd resolver, and /craft:git:issue-check from PR #283) onto the v4 folio-split branch. 34 conflicts resolved. Surface: 47 commands / 40 skills / 2 agents. Conflict resolution: - ~30 count-cascade conflicts (dev 95/45/8 vs branch 46/40/2) -> took the branch's post-split surface, then recomputed every tracked count mechanically via bump-version.sh --counts-only (14 files) rather than trusting hand-resolution. validate-counts.sh exits 0 at 47/40/2. - commands/docs/quickstart.md (modify/delete) -> kept deleted; folio owns it (verified present at folio/commands/docs/quickstart.md). dev's only change was a count bump inside an example template. - commands/git/issue-check.md -> KEPT AS A LIVE COMMAND, not folded into skills/dev/git/. Git's directory-rename detection had auto-relocated it to skills/dev/git/references/ (our side renamed commands/git/ -> skills/dev/git/references/ in T3.5.2), which would have broken tests/test_issue_check_unit.py: that test hardcodes commands/git/issue-check.md and exec()s the classify_issue() block out of it, so the command file is the single source of truth for the classifier. Same structural constraint recorded for commands/ci/triage.md in GRILL D13. Restored to commands/git/; its 12 unit tests pass. - skills/dev/git/SKILL.md -> kept the branch's reference-doc rows, dropped dev's stale commands/git/docs/refcard.md row. Operation 13 (Issue Premise Check) merged in cleanly from dev. - mkdocs.yml nav -> dropped dev's 7 deleted git command entries, kept the issue-check entry (blind --ours would have dropped it from the site). Also corrects two now-false claims in skills/dev/git/SKILL.md ("commands/git/ is now empty", "there is no explicit /craft:git:* invocation path anymore") — issue-check is a live command and the skill now says so, with the reason. Long-tail doc counts (46 -> 47) updated in 6 live user-facing files. Historical changelog entries, illustrative sample outputs, and spec/brainstorm records deliberately left at their original numbers. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Summary
PR A of
SPEC-guard-hardening-adversarial-review-2026-07-15.md. Adversarially re-verified (not assumed) the two items deferred after #284:main-substring / worktree-cleanup bug as pre-fix(guard): resolve Bash cross-context targets in branch-guard.sh #284 branch-guard.sh" does not reproduce — disproven by direct code read, dropped from scope.no-switch-guard.sh'sgit_dirresolution only honored-C <path>, never a leadingcd <path> &&— sois_dirty()checked the session's own repo, not the actual switch target.branch-guard.sh's own fix(guard): resolve Bash cross-context targets in branch-guard.sh #284-era §8d0 resolver (line 579, anchored^cd) only resolves a single leadingcd/-C— a multi-hop chain (cd a && cd b && ...) resolves to the wrong repo.Changes
cd-target resolution added to bothscripts/no-switch-guard.sh(new) andscripts/branch-guard.sh(retrofit of already-merged fix(guard): resolve Bash cross-context targets in branch-guard.sh #284 code) — parallel-inline logic in each (judgment call: the hooks derive base cwd differently, a shared sourced file would force both install scripts to deploy+source it).tests/test_branch_guard.shandtests/test_no_switch_guard.sh.docs/reference/REFCARD-BRANCH-GUARD.md— new "Cross-Context Target Resolution" section (no pre-existing section to extend).CHANGELOG.md+docs/CHANGELOG.md)[Unreleased]entries.Test plan
bash tests/test_branch_guard.sh— 124/124 (was 121; +3 multi-hop)bash tests/test_no_switch_guard.sh— 39/39 (was 36; +3 cross-context)dev(picks the firstcd, wrong target), PASS against this branch~/.claude/guards.jsonmute (unrelated to this branch) cleared, once viaHOOK_SCRIPT=<absolute-path>against the repo copy directly (the classifier correctly blocked reinstalling unmerged code to the live hook for test convenience)🤖 Generated with Claude Code