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* fix(#1729): resolve phase headers with a pre-colon parenthetical tag A phase header may carry a parenthetical tag between the number and the colon, e.g. `### Phase 26 (Cluster B): Title`. Every phase-header regex built `Phase\s+<num>` immediately against the colon delimiter, so the tagged phase was invisible: the resolver returned found:false and, just as bad, the capture-all enumeration/parse paths (roadmap analyze, milestone listing + milestone-scope filter, verify, init/import, state total_phases, validate, the command router, preamble stripping, and the phase-remove renumbering rewrite) silently dropped, miscounted, or failed to renumber it — wrong phase_count, progress_percent, next_phase, or corrupt numbering after a removal. The fix tolerates the tag at the header seam. Parameterized resolver sites compose the exported OPTIONAL_PHASE_TAG_SOURCE fragment; literal enumeration sites inline its character-for-character mirror `(?:\s*\([^)\n]*\))?`, placed immediately before the colon so it cannot alter an existing match (optional, single-line, one paren pair, no capture-group shift). In the renumber-on-removal rewrite the tag is folded into the re-emitted suffix capture so it survives verbatim. Both forms are documented to change together and a drift-guard test asserts their behavioral equivalence over a header corpus. Deliberately excluded: roadmap-upgrade.cts (legacy one-time migration), where tolerating the tag would silently drop it on header rewrite — that needs its own data-preserving treatment. Known boundaries left for follow-up: checklist/bullet-style phase entries (`- [ ] Phase N (tag):`) and a malformed space-before-colon variant, both pre-existing. Validated empirically against the issue's reproduction: `roadmap get-phase 26` resolves and `roadmap analyze` lists Phase 26 with the tag excluded from the name (phase_count 2, next 26); an all-tagged versioned roadmap now scopes correctly instead of falling back to a pass-all filter. Regression coverage in tests/phase.test.cjs asserts resolver parity (pre- vs post-colon), padding tolerance (#3537), decimal sub-phases, no cross-phase false match, the shared seam, enumeration coherence, renumber-preserves-tag, and seam/mirror drift. Full unit suite green (7291 pass, 0 fail); eslint + regression-name + resolution-provenance + changeset lints pass. Reviewed by Codex (no critical/high; the two enumeration misses it surfaced are folded in). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * chore(#1729): add changeset for pre-colon phase-tag fix Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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