feat: implement admin API for user and representation management

- Updated UsersPage to fetch users from the new admin endpoint.
- Enhanced user data structure to include 'name' and modified rendering logic.
- Added RepresentationDetailPage for detailed representation management.
- Created AdminApiController to handle user and representation CRUD operations.
- Implemented pagination and search functionality for users and representations.
- Updated user and representation data models to reflect new API structure.

assets/admin/pages/PaymentsPage.tsx

@@ -32,7 +32,7 @@ export default function PaymentsPage() {
       const params = new URLSearchParams({ page: String(page), limit: String(limit) });
       if (search) params.set('search', search);
       if (statusFilter) params.set('status', statusFilter);
-      return api.get<PaginatedResponse<Payment>>(`/api/v1/payments?${params}`);
+      return api.get<PaginatedResponse<Payment>>(`/api/v1/admin/payments?${params}`);
     },
   });
 
@@ -78,8 +78,8 @@ export default function PaymentsPage() {
     },
   ];
 
-  const items = data?.data?.items ?? [];
-  const total = data?.data?.total ?? 0;
+  const items = data?.data ?? [];
+  const total = data?.meta?.totalRecords ?? 0;
 
   return (
     <div>