runable

lib/features/home/presentation/providers/cart_item_count_provider.dart

@@ -0,0 +1,27 @@
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import 'cart_provider.dart';
+
+part 'cart_item_count_provider.g.dart';
+
+/// Provider that calculates total number of items in cart
+/// This is optimized to only rebuild when the count changes
+@riverpod
+int cartItemCount(Ref ref) {
+  final itemsAsync = ref.watch(cartProvider);
+  return itemsAsync.when(
+    data: (items) => items.fold<int>(0, (sum, item) => sum + item.quantity),
+    loading: () => 0,
+    error: (_, __) => 0,
+  );
+}
+
+/// Provider that calculates unique items count in cart
+@riverpod
+int cartUniqueItemCount(Ref ref) {
+  final itemsAsync = ref.watch(cartProvider);
+  return itemsAsync.when(
+    data: (items) => items.length,
+    loading: () => 0,
+    error: (_, __) => 0,
+  );
+}