- Create comprehensive MDC rule for systematic Playwright test failure investigation
- Integrate rule into harbor_pilot_universal.mdc for team-wide access
- Include investigation workflow, diagnostic commands, and evidence-based analysis
- Document specific failure patterns (alert stacking, selector conflicts, timing issues)
- Provide practical examples from recent test failure investigation
- Add investigation commands for error context, trace files, and page snapshots
This rule transforms ad-hoc test debugging into systematic investigation process,
leveraging Playwright's built-in debugging tools for faster root cause identification.
Matthew Raymer
4391cb2881