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msd-core/.changeset/graceful-koalas-forage.md
Tom Boucher be5113abfe fix(#2408): fold colliding phase statuses + add W023 collision warning (#2461)
* fix(#2408): fold colliding phase statuses + add W023 collision warning

Two coupled bugs from #2408:

1. cmdStats last-write-wins status (src/commands.cts:1610-1618): when two
   on-disk phase directories normalize to the same phase key (e.g.
   `05-real/` and `05-real-stray/`), the directory-scan merge overwrote
   `status` with whatever the *current* directory in scan order computed,
   discarding `existing?.status` entirely. fs.readdirSync order is not
   stable across platforms, so /gsd-stats could silently report `Not
   Started` for a phase that is actually `Complete`. Plan/summary counts
   were already additively merged; only `status` was wrong.

   Fix: introduced a `foldPhaseStatus(a, b)` helper that returns whichever
   status is further along the precedence ladder
   `Complete > Needs Review > Executed > In Progress > Planned > Not Started`
   (with `Pending` and unrecognized statuses ranked after). The merge site
   now calls `existing ? foldPhaseStatus(existing.status, status) : status`.
   The fold is commutative, so the result is identical regardless of read
   order.

2. cmdValidateHealth had no collision-detection pass (src/verify.cts):
   codes W001-W022 cover every condition except normalized-key collisions,
   so an operator got zero signal that anything was wrong.

   Fix: added W023 — groups phaseDirEntries by their normalized phase key
   (via the existing normalizePhaseName + extractPhaseToken helpers from
   phase-id.cjs — same normalization cmdStats uses) and emits a warning
   for any group with ≥2 dirs. The warning names the normalized key, both
   directory names (sorted by comparePhaseNum for stable output), and each
   directory's independently-computed status (via determinePhaseStatus
   imported from commands.cjs). Wording is deliberately neutral — never
   guesses which directory is the real one. The optional --repair path
   from the issue is intentionally NOT implemented in this PR (the issue
   marked it lower priority and acceptance criterion 4 is vacuously
   satisfied by omission).

Triage correction applied: the issue proposed W022, but that code is
already in use for config.json model-tier validation (src/verify.cts
:1372-1391). The next free code is W023, used here.

Tests:
- tests/commands.test.cjs: integration test that 05-real/ (Complete) +
  05-real-stray/ (empty/Not Started) collide and stats reports the merged
  phase as Complete regardless of read order; plus a direct unit test of
  foldPhaseStatus asserting commutativity + correct precedence for every
  status pair + correct handling of unrecognized statuses.
- tests/health-validation.test.cjs: integration test that W023 fires on
  the collision naming both dirs + their statuses (and uses neutral
  wording), plus a negative test that no W023 fires when only one dir
  exists per key.

References: #2408; reporter's three-layer triage + acceptance criteria;
triage correction that W022 is already in use (model-tier validation).

* chore(#2408): backfill pr:2461 in .changeset/graceful-koalas-forage.md
2026-07-20 15:49:57 -04:00

652 B

type, pr
type pr
Fixed 2461

/gsd-stats no longer misreports a phase as Not Started when two directories collide on the same phase key — cmdStats now folds colliding statuses by precedence (Complete > Needs Review > Executed > In Progress > Planned > Not Started) instead of overwriting last-write-wins, so the furthest-along status wins regardless of fs.readdirSync order. Separately, /gsd-health now emits a new W023 warning whenever two or more real phase directories collide on the same normalized phase key, naming both directories and their independently-computed statuses (neutral wording — never guesses which is the real one).