Clears cc-ci self-test lint failures: - ruff format: 9 files reformatted (all gtea test files + test_discovery.py) - ruff check --fix: bridge.py UP017 (datetime.UTC alias) + 6 gtea check errors - manifest.py B007: rename unused loop variable path → _path (no auto-fix available) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>