From 476394689a73500097f1d780e29a35528231abcd Mon Sep 17 00:00:00 2001 From: Tom Boucher Date: Mon, 7 Sep 2026 10:54:30 -0400 Subject: [PATCH] fix(#4254): pin sequential executor to the orchestrator's validated root (#4476) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * test(#4254): sequential executor root pin — failing-first regression + matrix The new suite executes the shipped supplied-root-pin guard against real git fixtures (drifted primary-checkout cwd halts before the write and the FATAL names both roots; matching cwd permits it; unexpanded/empty pins halt; normalization forms; submodule and sibling boundaries; metacharacter quoting; drive-letter form gate) and locks the dispatch contract across execute-phase.md, its sequential-root-pin step fragment, and worktree-path-safety.md. The #2772 per-plan serialization assertion retargets to the fragment that now carries those rules (ADR-857 Phase 6 ceiling), plus the host-step wiring. * fix(#4254): pin sequential executor to the orchestrator's validated root Sequential-mode dispatch told the executor to self-derive PROJECT_ROOT from its own cwd; every existing guard is worktree-mode-only or self-referential, so an executor spawned with a drifted cwd committed onto the wrong checkout silently. - worktree-path-safety.md step 0p: mode-agnostic supplied-root pin guard, composed by the orchestrator at build time with the literal $ORCHESTRATOR_WT (git-vs-git comparison on both sides — representation-safe on Windows, the #4296 lesson), fail-closed on empty/unexpanded pins, registered-submodule allowance, warn-and-proceed only when the dispatch carries no pin block. - execute-phase.md sequential branch: build-time embed of the bound via the new execute-phase/steps/sequential-root-pin.md fragment (ADR-857 Phase 6 frozen ceiling — the host step cannot grow; the wave serialization rules move with the fragment, verbatim in substance) plus the per-write/commit pin instruction in . Worktree-mode dispatch untouched (its self-derived toplevel IS correct there). - INVENTORY rows (5 locales) + INVENTORY-MANIFEST + install-tree goldens regenerated for the new fragment; changeset added. * chore(#4254): backfill changeset PR number * fix(#4254): accept backslash-separated Windows drive pins CI on windows-latest showed every permit-path test failing with "Actual root: ": pins composed from Node's path.join arrive in the backslash drive form (C:\Users\RUNNER~1\...), which the guard's absolute-form gate rejected before the cwd-side root was ever computed — a legitimate matching pin could never pass. The gate now accepts either separator ([A-Za-z]:[\\/]); git -C resolves both forms (and 8.3 short names) to the same canonical toplevel, so the git-vs-git comparison is unaffected. Form-gate tests cover the emitted (C:/…) and produced (C:\…) spellings plus short names. * fix(#4254): portable drive-form gate for MSYS bash The bracket class [\\/] that accepted backslash drive pins parses inconsistently on MSYS bash (the Windows CI leg still rejected C:\ pins — every permit-path test red with "Actual root: "). Replace it with standard pattern escaping outside brackets: [A-Za-z]:/*|[A-Za-z]:\\* — the escape form is version- and build-portable. Verified across all forms: both drive spellings accepted; bare "C:", relative, empty, and unexpanded rejected. * fix(#4254): runtime-generated backslash comparator + self-describing FATAL The Windows CI legs failed every #4254 permit-path row with 'Actual root: ' across two prior pattern spellings ([\\/] and \\*). Stage misattribution: appears whenever the FATAL fires BEFORE the cwd-side capture assigns ACTUAL_ROOT — the absolute-form gate was what fired. Mechanism: the test harness spawns bash -c