feat: Add functionality to move inventory items to pantry and enhance pantry management

- Implemented moveInventoryItemToPantry method in InventoryRepository to facilitate moving items from inventory to pantry.
- Enhanced InventoryScreen with a new header section providing context about the inventory.
- Added a button in SwipeableInventoryTile to move items to pantry with appropriate error handling.
- Introduced movePantryItemToInventory method in PantryRepository to support moving items back to inventory.
- Refactored PantryScreen to rename _addToInventory to _moveToInventory for clarity and updated UI to reflect changes.
- Added AdminPantryItem model to represent pantry items in the admin panel.
- Created AdminPantryPanel for managing pantry items, including moving items to inventory and listing users.
- Developed AdminPrivateProductsPanel for managing private products, allowing promotion to global products.

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

@@ -6,6 +6,7 @@ import '../../../core/api/guarded_api_call.dart';
 import '../../auth/data/auth_providers.dart';
 import '../domain/admin_ai_categorize_result.dart';
 import '../domain/admin_category_node.dart';
+import '../domain/admin_pantry_item.dart';
 import '../domain/admin_inventory_item.dart';
 import '../domain/admin_product.dart';
 import '../domain/ai_model_info.dart';
@@ -177,6 +178,9 @@ class AdminRepository {
     Future<List<AdminProduct>> listGlobalProducts() =>
       _getList(ProductApiPaths.list, AdminProduct.fromJson, requiresAuth: false);
 
+  Future<List<PendingProduct>> listPrivateProducts() =>
+      _getList(ProductApiPaths.privateList, PendingProduct.fromJson);
+
   Future<List<AdminProduct>> listDeletedProducts() =>
       _getList(ProductApiPaths.deleted, AdminProduct.fromJson);
 
@@ -186,6 +190,13 @@ class AdminRepository {
   Future<void> setProductStatus(int productId, String status) =>
       _patchVoid(ProductApiPaths.setStatus(productId), {'status': status});
 
+  Future<AdminProduct> promotePrivateProduct(int productId) =>
+      _post<AdminProduct>(
+        ProductApiPaths.promotePrivate(productId),
+        body: null,
+        parse: (d) => AdminProduct.fromJson(Map<String, dynamic>.from(d as Map)),
+      );
+
   Future<void> setProductCategory(int productId, {required int? categoryId}) =>
       _patchVoid(ProductApiPaths.update(productId), {'categoryId': categoryId});
 
@@ -388,6 +399,29 @@ class AdminRepository {
   Future<void> removeAdminInventory(int inventoryId) =>
       _deleteVoid(AdminInventoryApiPaths.remove(inventoryId));
 
+    Future<void> moveAdminInventoryToPantry(int inventoryId) =>
+      _postVoid(AdminInventoryApiPaths.moveToPantry(inventoryId));
+
+    // ── Admin pantry ──────────────────────────────────────────────────────────
+
+    Future<List<AdminPantryItem>> listAdminPantry({int? userId}) {
+      final params = <String, String>{};
+      if (userId != null) params['userId'] = '$userId';
+      final path = params.isEmpty
+          ? PantryApiPaths.adminList
+          : '${PantryApiPaths.adminList}?${params.entries.map((e) => '${Uri.encodeQueryComponent(e.key)}=${Uri.encodeQueryComponent(e.value)}').join('&')}';
+      return _getList(path, AdminPantryItem.fromJson);
+    }
+
+    Future<void> removeAdminPantryItem(int pantryItemId) =>
+        _deleteVoid(PantryApiPaths.adminRemove(pantryItemId));
+
+    Future<void> moveAdminPantryToInventory(
+      int pantryItemId,
+      Map<String, dynamic> body,
+    ) =>
+        _postVoid(PantryApiPaths.moveToInventoryAdmin(pantryItemId), body);
+
   Future<void> mergeAdminInventory({
     required int sourceInventoryId,
     required int targetInventoryId,