feat(flutter): 接入分类记录收藏与下载授权

test/support/fake_category.dart

@@ -0,0 +1,23 @@
+// Author: fruit.com.cn
+
+import 'package:fruitshorts/core/data/models/content_category.dart';
+import 'package:fruitshorts/core/data/models/home_feed.dart';
+import 'package:fruitshorts/core/data/repositories/catalog_repository.dart';
+import 'package:fruitshorts/core/data/repositories/category_repository.dart';
+
+/// 分类测试仓库：分类清单固定，发现 feed 复用注入的目录仓库。
+class FakeCategoryRepository implements CategoryRepository {
+  FakeCategoryRepository({
+    required this.catalog,
+    this.categories = const [ContentCategory(id: '7', name: 'Romance')],
+  });
+
+  final CatalogRepository catalog;
+  final List<ContentCategory> categories;
+
+  @override
+  Future<List<ContentCategory>> fetchCategories() async => categories;
+
+  @override
+  Future<HomeFeed> fetchDiscoverFeed() => catalog.fetchDiscoverFeed();
+}

test/support/fake_watch_history.dart

@@ -64,4 +64,10 @@ class FakeWatchHistory implements WatchHistoryRepository {
 
   @override
   Future<void> remove(String dramaId) async => records.remove(dramaId);
+
+  @override
+  Future<void> clear() async {
+    records.clear();
+    recentRecords = const [];
+  }
 }