- Enhanced `useAdminUsers` to support `search`, `is_active`, and `is_superuser` filters.
- Updated `UserManagementContent` to read filters from URL parameters and convert them to API-compatible formats.
- Introduced E2E and unit tests to validate filtering behavior and URL param synchronization.
- Ensured proper handling of combined filters and empty states in tests.
- Added unit tests for `BulkActionToolbar` to verify visibility logic, button states, confirmation dialogs, and hook integration.
- Implemented unit tests for `UserFormDialog` to ensure proper rendering, validation, and interaction.
- Introduced end-to-end tests for admin user management functionality, including user list, creation, editing, search, filtering, pagination, and bulk actions.
- Improved test coverage and reliability across admin user-related features.
