refactor(tests): replace crud references with repo across repository test files

- Updated import statements and test logic to align with `repositories` naming changes.
- Adjusted documentation and test names for consistency with the updated naming convention.
- Improved test descriptions to reflect the repository-based structure.

frontend/frontend-requirements.md

@@ -1780,7 +1780,7 @@ The frontend template will be considered complete when:
 1. **Functionality:**
    - All specified pages are implemented and functional
    - Authentication flow works end-to-end
-   - User and organization CRUD operations work
+   - User and organization management operations work
    - API integration is complete and reliable
 
 2. **Code Quality:**