- Disk status variants: researched, discussed, empty branches covered
- Milestone extraction: version numbers and headings from ## headings
- Missing phase details: checklist-only phases without detail sections
- Success criteria: array extraction from phase sections
- 7 new tests (18 total in roadmap suite)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Move 81 tests (18 describe blocks) from single monolithic test file
into 7 domain-specific test files under tests/ with shared helpers.
Test parity verified: 81/81 pass before and after split.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
