* refactor(#1387): migrate adr-parser onto markdown-sectionizer seam (T2) Replace hand-rolled parseSections (split/heading-regex walk/body accumulation) with collectSections(content, () => true) from the canonical seam. Replace hand-rolled splitEntries bullet-strip regex with iterateBullets from the seam, preserving the plain-text-line fallback for byte-identical output. Removes the last inline heading/bullet scanning from adr-parser.cts; normalizeAdrHeader and all ADR-specific classification logic are unchanged. 218/218 tests pass before and after. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * refactor(#1387): keep splitEntries flat (iterateBullets changed its contract); seam adoption stays in parseSections Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * refactor(#1387): drop dead preamble reconstruction; add targeted adr-parser mutation tests parseSections' preamble reconstruction block (heading: null entry) was dead code: both consumers (parseAdrMarkdown and parseStatusFromSections) skip heading: null sections immediately on entry. Confirmed via analytical trace and zero-diff corpus head-to-head across all 44 docs/adr/*.md files. Adds 11 targeted behavioral tests to kill cheap surviving mutants: - pushUnique intra-values dedup (kills seen.add removal mutant) - body split/join round-trip with multi-line prose and entries - parseStatusFromSections [0] indexing (only first line determines status) - classifyHeader equality vs prefix-match boundary (exact match, prefix match, synonym+letter non-match) - goal section prose vs entries distinction (bullet markers preserved in context) - normalizeAdrHeader non-word char removal (parens and slash behavior) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
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