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msd-core/.changeset/2043-phase-token-single-digit-slug.md
Tom Boucher 6efd2b4016 fix(#2043): reject single-digit slug word in phase-token extraction (all sites)
A phase whose slug's first word is a bare single digit (dir
`46-6-rs-pipeline-orchestrator`, roadmap phase "6 Rs Pipeline Orchestrator" →
slug `6-rs-…`) had its phase token over-collected as `46-6` instead of `46`, so
`gsd-tools` phase-by-number lookups (init.plan-phase, init.phase-op, and
downstream execute/verify/ship) resolved phase_dir=null / has_context=false.

Root cause: an over-broad "looks numeric" test (`/^\d/`, `\d+(?:-\d+)*`)
classified token segments and could not distinguish a legitimate zero-padded
sub-phase segment (`01`, `02`) from a single-digit slug word (`6`). Zero-padded
phase/sub-phase segments are always ≥2 digits, so requiring ≥2 digits is the
structural distinguisher. Applied consistently across every same-class
implementation the triage identified (fixing extractPhaseToken alone leaves the
health-check and milestone-filter subsystems exposed):

- src/phase-id.cts extractPhaseToken — a pure-numeric leading segment continues
  only with ≥2-digit segments; a letter-prefixed milestone id (`M1`) still
  admits its single-digit sub-phase (`M1-2`).
- src/validate.cts PHASE_TOKEN_FROM_DIR_RE (W005/W006/W007 health checks) and
  canonicalPlanStem (I001 plan/summary pairing).
- src/roadmap-parser.cts isDirInMilestone numericRe (getMilestonePhaseFilter —
  highest blast radius: a false negative silently excludes a phase from the
  milestone).
- src/core-utils.cts + its verbatim duplicate src/phase.cts extractCanonicalPlanId.

Regression tests added across tests/{phase-id,health-validation,core-utils,
roadmap-parser}.test.cjs using the shared `46-6-rs-…` fixture, asserting the
token resolves to `46` (not `46-6`) while legit multi-segment tokens
(`01-02`, `02-03-04`, `M1-2`, `68-01`, `02-01`) are unchanged. The
roadmap-parser test exercises the real getMilestonePhaseFilter end-to-end.

The residual ≥2-digit-leading-slug case (e.g. `NN-2024-roadmap`) stays out of
scope — subsumed by the #612 / #565 phase-ID convention work, per the issue.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-07 10:15:37 -04:00

917 B

type, pr
type pr
Fixed 2059

Phase directories whose slug begins with a single digit now resolve correctly. A phase like 46-6-rs-pipeline-orchestrator (roadmap name "6 Rs Pipeline Orchestrator") had its phase token over-collected as 46-6 instead of 46, so gsd-tools phase-by-number lookups resolved phase_dir=null / has_context=false (breaking init.plan-phase, init.phase-op, and downstream execute/verify/ship). Numeric phase-token components must now be zero-padded (≥2 digits), so a single-digit slug word is no longer absorbed into the token. Fixed consistently across every same-class implementation — extractPhaseToken, PHASE_TOKEN_FROM_DIR_RE and canonicalPlanStem (health checks / plan pairing), isDirInMilestone's numeric matcher (milestone filtering), and extractCanonicalPlanId — so the health-check and milestone-filter subsystems are fixed alongside phase resolution.