- Add pytest markers (integration, e2e, slow) with skip logic - Add command line options (--run-integration, --run-e2e) - Create sample_project and sample_project_with_bug fixtures - Add test_integration.py with 10 LLM tests - Add test_e2e.py with 12 API server tests - Update COVERAGE.md to reflect ~65% complete Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>