- **Security Headers:** Add tests for HSTS in production, CSP in strict mode, and root endpoint response types.
- **Permissions:** Introduce tests for critical security paths, including superuser bypass and edge case scenarios.
- **CRUD Testing Enhancements:** Cover error scenarios for soft deletes, restores, and eager loading with SQLAlchemy options.
- **Organization Routes:** Validate user organization endpoints for memberships, details, and member listings.
- Add defensive code comments with `# pragma: no cover` for unreachable code sections.