## Review Note: Missing Test Coverage **Reviewer Oversight:** This ticket was passed with only MCP bridge tests verified (4 passed), not the full Rails test suite. **Required Actions:** 1. Run full test suite: `bundle exec rspec` to verify no broken references to removed models 2. Check for any remaining references to Artifact or CodeDiff in: - Model specs - Controller specs - View specs 3. Fix any failing tests **Important:** Large-scale deletions (1046 lines) should always have full test verification.