test: Comprehensive Testing

[pasogott]

User Story: As a developer, I want high test coverage, so that the tool is reliable and maintainable.

Tasks

• Review all modules for test coverage
• Add integration tests
• Add edge case tests (timeouts, large files, etc.)
• Test quoted arguments extensively
• Test multi-site switching
• Test error handling paths
• Achieve 80%+ coverage
• Set up CI pipeline (GitHub Actions)

Acceptance Criteria

• uv run pytest --cov shows 80%+ coverage
• All critical paths tested
• Edge cases covered
• CI runs tests on push
• Tests run on Python 3.12, 3.13

Files to Create

• .github/workflows/test.yml (already exists, enhance)
• tests/integration/test_live_api.py (optional, manual)

Phase: 5 | User Story: 5.1