Covers project-root detection, path matching, three-way merges, apply-zip
end to end, snapshots and CONTEXTZIP.md, workspace detection and git
changes in nested repos. Runs on Windows, macOS and Linux with Python
3.9, 3.12 and 3.13: python -m unittest discover -s tests -t .
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
