feat: enhance admin and profile repositories with token handling; update dropdown initial values in various screens

flutter/lib/features/meal_plan/data/meal_plan_providers.dart

@@ -16,6 +16,18 @@ class _IntNotifier extends Notifier<int> {
   final int _initial;
   @override
   int build() => _initial;
+
+  void increment() {
+    state = state + 1;
+  }
+
+  void decrement() {
+    state = state - 1;
+  }
+
+  void reset() {
+    state = 0;
+  }
 }
 
 final mealPlanWeekOffsetProvider =

flutter/lib/features/meal_plan/data/meal_plan_repository.dart

@@ -19,7 +19,7 @@ class MealPlanRepository {
           message: 'Ogiltigt svar från servern.',
         );
       }
-      return (data as List)
+      return data
           .map((item) => MealPlanEntry.fromJson(item as Map<String, dynamic>))
           .toList();
     } on ApiException {
@@ -41,7 +41,7 @@ class MealPlanRepository {
           message: 'Ogiltigt svar från servern.',
         );
       }
-      return (data as List)
+      return data
           .map((item) => ShoppingItem.fromJson(item as Map<String, dynamic>))
           .toList();
     } on ApiException {
@@ -63,7 +63,7 @@ class MealPlanRepository {
           message: 'Ogiltigt svar från servern.',
         );
       }
-      return (data as List)
+      return data
           .map((item) => InventoryCompareItem.fromJson(item as Map<String, dynamic>))
           .toList();
     } on ApiException {