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>>()

lib/core/data/models/search_result.dart

@@ -0,0 +1,22 @@
+// Author: fruit.com.cn
+
+import 'drama.dart';
+import 'json_numbers.dart';
+
+/// 搜索分页结果：`GET /app/search` 的 `{total, list}`。
+class SearchResult {
+  const SearchResult({this.total = 0, this.list = const []});
+
+  final int total;
+  final List<Drama> list;
+
+  factory SearchResult.fromJson(Map<String, dynamic> json) {
+    return SearchResult(
+      total: jsonToInt(json['total']),
+      list: (json['list'] as List? ?? const [])
+          .whereType<Map<String, dynamic>>()
+          .map(Drama.fromCardJson)
+          .toList(),
+    );
+  }
+}

lib/core/data/remote/catalog_api.dart

@@ -1,5 +1,6 @@
 import '../models/drama.dart';
 import '../models/home_feed.dart';
+import '../models/search_result.dart';
 import 'api_client.dart';
 
 /// 客户端目录接口，对应后端 `/app/**`。
@@ -16,6 +17,23 @@ class CatalogApi {
     return HomeFeed.fromJson(_asMap(await _client.get('/app/discover/feed')));
   }
 
+  /// 搜索已上线短剧：按标题/简介模糊匹配，分页返回卡片列表。
+  Future<SearchResult> search(
+    String keyword, {
+    int pageIndex = 1,
+    int pageSize = 20,
+  }) async {
+    final data = await _client.get(
+      '/app/search',
+      query: {
+        'keyword': keyword,
+        'pageIndex': '$pageIndex',
+        'pageSize': '$pageSize',
+      },
+    );
+    return SearchResult.fromJson(_asMap(data));
+  }
+
   Future<Drama> dramaDetail(String dramaId) async {
     return Drama.fromDetailJson(
       _asMap(await _client.get('/app/dramas/$dramaId')),

lib/core/data/repositories/search_repository.dart

@@ -0,0 +1,26 @@
+// Author: fruit.com.cn
+
+import '../models/search_result.dart';
+import '../remote/catalog_api.dart';
+
+/// 搜索数据来源：只调用后端 `/app/search`，不在客户端做本地过滤。
+abstract interface class SearchRepository {
+  Future<SearchResult> search(
+    String keyword, {
+    int pageIndex = 1,
+    int pageSize = 20,
+  });
+}
+
+class HttpSearchRepository implements SearchRepository {
+  const HttpSearchRepository(this._api);
+
+  final CatalogApi _api;
+
+  @override
+  Future<SearchResult> search(
+    String keyword, {
+    int pageIndex = 1,
+    int pageSize = 20,
+  }) => _api.search(keyword, pageIndex: pageIndex, pageSize: pageSize);
+}