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 =