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/UsersPage.tsx

@@ -25,7 +25,7 @@ export default function UsersPage() {
     queryKey: ['users', page, search],
     queryFn: () =>
       api.get<PaginatedResponse<User>>(
-        `/api/v1/users?page=${page}&limit=${limit}${search ? `&search=${encodeURIComponent(search)}` : ''}`,
+        `/api/v1/admin/users?page=${page}&limit=${limit}${search ? `&search=${encodeURIComponent(search)}` : ''}`,
       ),
   });
 
@@ -45,9 +45,7 @@ export default function UsersPage() {
       header: 'نام',
       render: (u) => (
         <span className="font-medium text-gray-900">
-          {u.first_name || u.last_name
-            ? `${u.first_name ?? ''} ${u.last_name ?? ''}`.trim()
-            : '—'}
+          {u.name || (u.first_name || u.last_name ? `${u.first_name ?? ''} ${u.last_name ?? ''}`.trim() : '—')}
         </span>
       ),
     },
@@ -81,8 +79,8 @@ export default function UsersPage() {
     },
   ];
 
-  const items = data?.data?.items ?? [];
-  const total = data?.data?.total ?? 0;
+  const items = data?.data ?? [];
+  const total = data?.meta?.totalRecords ?? 0;
 
   return (
     <div>
@@ -132,7 +130,7 @@ export default function UsersPage() {
       <ConfirmDialog
         open={!!deleteTarget}
         title="حذف کاربر"
-        message={`آیا از حذف کاربر "${deleteTarget?.first_name ?? deleteTarget?.mobile_number}" اطمینان دارید؟ این عمل قابل بازگشت نیست.`}
+        message={`آیا از حذف کاربر "${deleteTarget?.name ?? deleteTarget?.mobile_number}" اطمینان دارید؟ این عمل قابل بازگشت نیست.`}
         confirmLabel="حذف"
         danger
         loading={deleteMutation.isPending}