product availability

mnemo_cards_backend/lib/packs/card_pack_drift_extension.dart

@@ -5,11 +5,13 @@ import 'package:mnemo_cards_common_backend/mnemo_cards_common_backend.dart'
     hide VoiceModel;
 import 'package:mnemo_cards_common/mnemo_cards_common.dart';
 
+import '../api/di/injector.dart';
+import 'product_availability_manager.dart';
+
 /// Extension для конвертации CardPack (Drift) в DTO
 extension CardPackToDto on CardPack {
   Future<CardPackPreviewDto> toPreviewDto(UserModel? user) async {
-    final hasAccess =
-        user != null && (user.packs.contains(id.toString()) || user.admin);
+    final isAvailable = await getIt.get<ProductAvailabilityManager>().isPackAvailable(packId: id.toString(), user: user);
 
     // Generate cover image URL
     String? coverUrl;
@@ -36,7 +38,7 @@ extension CardPackToDto on CardPack {
       price: price,
       imageUrl: coverUrl,
       color: color,
-      isAvailable: hasAccess,
+      isAvailable: isAvailable,
       tip: null,
       version: version,
     );