- Added `AdminDutyList` and `ReassignSheet` components for improved duty management in the admin panel.
- Introduced `useAdminPage` hook to encapsulate admin-related logic, including user and duty loading, and reassign functionality.
- Updated `frontend.mdc` documentation to reflect new admin components and their usage.
- Improved error handling for API responses, particularly for access denied scenarios.
- Refactored admin page to utilize new components, streamlining the UI and enhancing maintainability.
