- Create CLAUDE.md with project commands and code style guidelines
- Add detailed E2E testing plan in prds/add-e2e-tests.md covering:
- Priority-based testing strategy for critical user workflows
- Implementation constraints requiring only test ID additions
- Mandatory test validation workflow with npm run test:e2e
- Test coverage for expense splitting, balance tracking, and group management
- Remove CRUSH.md (replaced by CLAUDE.md)
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Co-Authored-By: Claude <noreply@anthropic.com>