feat: 开屏后直接展示首页骨架

lib/pages/discover/search_page.dart

@@ -12,6 +12,7 @@ import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_dimens.dart';
 import '../../core/theme/app_theme.dart';
 import '../../core/widgets/app_pull_to_refresh.dart';
+import '../../core/widgets/drama_grid_skeleton.dart';
 import '../../core/widgets/empty_state.dart';
 import '../../l10n/app_localizations.dart';
 import '../player/open_player.dart';
@@ -201,15 +202,14 @@ class _SearchPageState extends State<SearchPage> {
       return _resultsGrid();
     }
     if (_logic.searchLoading) {
-      return _stateScroll(
-        const SizedBox.square(
-          key: Key('search-loading'),
-          dimension: 20,
-          child: CircularProgressIndicator(
-            strokeWidth: 2,
-            color: AppColors.textPrimary,
-          ),
-        ),
+      return const DramaGridSkeleton(
+        key: Key('search-loading-skeleton'),
+        columns: 2,
+        horizontalPadding: AppDimens.feedPageHorizontal,
+        crossAxisSpacing: AppDimens.searchResultGap,
+        mainAxisSpacing: AppDimens.searchResultRowGap,
+        itemCount: 6,
+        physics: AppPullToRefresh.physics,
       );
     }
     if (_logic.searchError != null) {