feat: enhance profile screen with tab navigation and admin panels

- Added tab navigation for profile, database, users, suggestions, and AI sections.
- Implemented database management with inventory, pantry, and products tabs.
- Created Admin AI panel to display AI model information.
- Introduced Admin Pending Products panel for managing product approvals.
- Developed Admin Users panel for user management, including role changes and password resets.
- Added data models for AI models and pending products.

flutter/lib/features/admin/data/admin_repository.dart

@@ -3,6 +3,8 @@ import '../../../core/api/api_client.dart';
 import '../../../core/api/api_paths.dart';
 import '../../../core/api/guarded_api_call.dart';
 import '../../auth/data/auth_providers.dart';
+import '../domain/ai_model_info.dart';
+import '../domain/pending_product.dart';
 import '../domain/user_admin.dart';
 
 final adminRepositoryProvider = Provider<AdminRepository>((ref) {
@@ -80,4 +82,37 @@ class AdminRepository {
     );
     return (result as Map<String, dynamic>);
   }
+
+  Future<List<PendingProduct>> listPendingProducts() async {
+    final token = await _token();
+    final data = await guardedApiCall(
+      _ref,
+      () => _apiClient.getJson(ProductApiPaths.pending, token: token),
+    );
+    return (data as List<dynamic>)
+        .map((e) => PendingProduct.fromJson(e as Map<String, dynamic>))
+        .toList();
+  }
+
+  Future<void> setProductStatus(int productId, String status) async {
+    final token = await _token();
+    await guardedApiCall(
+      _ref,
+      () => _apiClient.patchJson(
+        ProductApiPaths.setStatus(productId),
+        body: {'status': status},
+        token: token,
+      ),
+    );
+  }
+
+  Future<List<AiModelInfo>> listAiModels() async {
+    final data = await guardedApiCall(
+      _ref,
+      () => _apiClient.getJson(AiApiPaths.models),
+    );
+    return (data as List<dynamic>)
+        .map((e) => AiModelInfo.fromJson(e as Map<String, dynamic>))
+        .toList();
+  }
 }