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* refactor(#1398): migrate state.cts section-collect regexes onto markdown-sectionizer seam (epic #1372 T6) Replace ≈18 hand-rolled `/(heading)([\s\S]*?)(?=stop)/` regex splices in state.cts with direct `tokenizeHeadings` calls that compute the exact [bodyStart, stopOffset) span, preserving byte-identical STATE.md output. Non-migratable site left in place: `cmdStateRecordMetric`'s metricsPattern captures table-header rows in group 1 — not a standard heading+body shape. Write orchestration (readModifyWriteStateMd / syncStateFrontmatter / shouldPreserveExistingProgress / #952 no-op guard) is UNTOUCHED. Verification: t6-headtohead.cjs head-to-head harness runs 25 ops across 6 STATE.md fixture variants (inline, trailing-blanks, CRLF, no-frontmatter, nested-acc, post-milestone) against origin/next and reports 0 diffs. No-op guard confirmed: record-session on recorded:false leaves STATE.md byte-identical. All 150 state tests and 62 milestone/forensics tests pass. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * test(#1398): capture T6 state-section-splice characterization; drop throwaway harness Remove scripts/t6-headtohead.cjs (committed throwaway HEAD-vs-origin/next byte-compare harness). Capture its coverage as 23 behavioral characterization tests appended to tests/state.test.cjs, exercising all migrated cmdState* write-ops across 7 fixture variants (inline, trailing-blanks, CRLF, no-frontmatter, nested-acc, no-current-pos, post-milestone). Includes the #952 no-op guard (recorded:false + byte-unchanged assertion) and CRLF/trailing-blanks edge-case coverage. Also removes the dead spliceStateSection helper (defined but never called) that was surfacing as an @typescript-eslint/no-unused-vars warning. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
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195 KiB