Add patterns to ignore temporary files generated during development:
- Test coverage reports (coverage/)
- Downloaded test files (downloads/, *.xlsx, *.parsed.json)
- Debug and manual test scripts (tests/debug/, tests/manual/)
- Temporary test scripts (test-*.mjs, test-*.js, compare_*.js)
This keeps the repository clean while preserving useful test scripts
locally for debugging purposes.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>