When orphaned SUMMARY.md files cause totalSummaries > totalPlans, the
progress percentage exceeds 100%, making String.repeat() throw RangeError
on negative arguments. Clamp percent to Math.min(100, ...) at all three
computation sites (state, commands, roadmap).
Closes#633
Co-authored-by: vinicius-tersi <vinicius-tersi@users.noreply.github.com>
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>
