feat(app): 搜索改为调用后端并渲染卡片结果

lib/core/data/models/drama.dart

@@ -65,6 +65,7 @@ class Drama {
     this.freeEpisodes = 0,
     this.isHot = false,
     this.viewCount = 0,
+    this.language = '',
     this.detailLoaded = false,
   });
 
@@ -80,6 +81,9 @@ class Drama {
   final bool isHot;
   final int viewCount;
 
+  /// 卡片语种（如 zh-CN / id），用于剧场语言筛选。
+  final String language;
+
   /// 详情接口是否已经取过完整剧集列表。
   /// 列表卡片只带一集可播预览，需要完整剧集时再进详情。
   final bool detailLoaded;
@@ -104,6 +108,7 @@ class Drama {
       isHot: json['isHot'] == true,
       // viewCount 后端是 Long，按字符串下发（见 json_numbers.dart）
       viewCount: jsonToInt(json['viewCount']),
+      language: json['language'] as String? ?? '',
     );
   }
 
@@ -120,6 +125,7 @@ class Drama {
       freeEpisodes: (json['freeEpisodes'] as num?)?.toInt() ?? 0,
       isHot: json['isHot'] == true,
       viewCount: jsonToInt(json['viewCount']),
+      language: json['language'] as String? ?? '',
       detailLoaded: true,
       episodes: (json['episodes'] as List? ?? const [])
           .whereType<Map<String, dynamic>>()