- Creates temp dir with .planning/phases structure
- Initializes git repo with user config
- Writes initial PROJECT.md and commits it
- Exports createTempGitProject alongside existing helpers
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>