fix(profile): 修复我的收藏与观看历史列表不显示

lib/core/data/models/page_result.dart

@@ -3,6 +3,8 @@
 import 'json_numbers.dart';
 
 /// 服务端标准分页响应 `{total, list}`。
+///
+/// 兼容旧版「data 直接是数组」的响应：按数组长度作为 total，避免列表空白。
 class PageResult<T> {
   const PageResult({this.total = 0, this.list = const []});
 
@@ -14,10 +16,32 @@ class PageResult<T> {
     Map<String, dynamic> json,
     T Function(Map<String, dynamic>) parseItem,
   ) {
-    final items = (json['list'] as List? ?? const [])
-        .whereType<Map<String, dynamic>>()
-        .map(parseItem)
-        .toList(growable: false);
+    final items = _parseItemMaps(json['list']).map(parseItem).toList(
+      growable: false,
+    );
     return PageResult(total: jsonToInt(json['total']), list: items);
   }
+
+  /// 兼容分页 Map 与旧版纯 List；其它类型视为空页。
+  factory PageResult.parse(
+    Object? data,
+    T Function(Map<String, dynamic>) parseItem,
+  ) {
+    if (data is Map) {
+      return PageResult.fromJson(Map<String, dynamic>.from(data), parseItem);
+    }
+    if (data is List) {
+      final items = _parseItemMaps(data).map(parseItem).toList(growable: false);
+      return PageResult(total: items.length, list: items);
+    }
+    return PageResult<T>();
+  }
+}
+
+List<Map<String, dynamic>> _parseItemMaps(Object? raw) {
+  if (raw is! List) return const [];
+  return [
+    for (final item in raw)
+      if (item is Map) Map<String, dynamic>.from(item),
+  ];
 }