style(app): 格式化并拆分长函数

lib/core/data/repositories/playback_repository.dart

@@ -59,7 +59,8 @@ class _CachedTicket {
   final PlayTicket ticket;
   final DateTime fetchedAt;
 
-  bool isExpired(DateTime now, Duration ttl) => now.difference(fetchedAt) >= ttl;
+  bool isExpired(DateTime now, Duration ttl) =>
+      now.difference(fetchedAt) >= ttl;
 }
 
 /// 测试与离线场景用：按集返回固定票据，并记录被请求过几次。

lib/core/data/repositories/search_repository.dart

@@ -1,4 +1,4 @@
-// Author: fruit.com.cn
+// Author: fruit.com.cn
 
 import '../models/search_result.dart';
 import '../remote/catalog_api.dart';

lib/core/data/repositories/store_repository.dart

@@ -1,4 +1,4 @@
-// Author: fruit.com.cn
+// Author: fruit.com.cn
 
 import '../models/order.dart';
 import '../models/product.dart';