feat(flutter): 统一空列表占位组件

lib/pages/discover/discover_view.dart

@@ -11,6 +11,7 @@ import '../../core/data/services/catalog_controller.dart';
 import '../../core/data/services/category_controller.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_theme.dart';
+import '../../core/widgets/empty_state.dart';
 import '../../core/widgets/remote_image.dart';
 import '../../l10n/app_localizations.dart';
 import 'discover_binding.dart';

lib/pages/discover/widgets/home_drama_grid.dart

@@ -44,14 +44,19 @@ class _HomeDramaGrid extends StatelessWidget {
 
     final dramas = categories.visibleDramas;
     if (dramas.isEmpty) {
+      final missingCategory = categories.selectedSectionMissing;
       return SliverPadding(
         padding: const EdgeInsets.fromLTRB(16, 6, 16, 24),
         sliver: SliverToBoxAdapter(
-          child: Text(
-            categories.selectedSectionMissing
+          child: EmptyState(
+            key: const Key('home-all-dramas-empty'),
+            icon: missingCategory
+                ? Icons.grid_view_rounded
+                : Icons.search_off_rounded,
+            title: missingCategory
                 ? l10n.noCategoryDramas
                 : l10n.noSearchResults,
-            style: const TextStyle(color: AppColors.muted),
+            subtitle: l10n.emptyHint,
           ),
         ),
       );

lib/pages/downloads/downloads_page.dart

@@ -15,6 +15,7 @@ import '../../core/platform/haptics.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_theme.dart';
 import '../../core/widgets/auth_gate.dart';
+import '../../core/widgets/empty_state.dart';
 import '../../l10n/app_localizations.dart';
 import 'downloads_binding.dart';
 
@@ -144,14 +145,11 @@ class _DownloadsBody extends StatelessWidget {
             ],
           ),
           if (downloads.licenses.isEmpty)
-            Padding(
+            EmptyState(
               key: const Key('downloads-empty'),
-              padding: const EdgeInsets.symmetric(vertical: 34),
-              child: Text(
-                l10n.noDownloads,
-                textAlign: TextAlign.center,
-                style: const TextStyle(color: Colors.white70),
-              ),
+              icon: Icons.download_outlined,
+              title: l10n.noDownloads,
+              subtitle: l10n.emptyHint,
             )
           else
             for (final license in downloads.licenses) ...[

lib/pages/drama_detail/drama_detail_view.dart

@@ -17,6 +17,7 @@ import '../../core/theme/app_theme.dart';
 import '../../core/widgets/remote_image.dart';
 import '../../core/widgets/auth_gate.dart';
 import '../../core/widgets/download_action.dart';
+import '../../core/widgets/empty_state.dart';
 import '../../l10n/app_localizations.dart';
 import '../interaction/widgets/report_dialog.dart';
 import 'drama_detail_binding.dart';
@@ -114,28 +115,13 @@ class _DramaDetailPageState extends State<DramaDetailPage> {
           foregroundColor: Colors.white,
           title: Text(localizedDramaTitle(l10n, drama)),
         ),
-        body: Center(
-          child: Padding(
-            padding: const EdgeInsets.symmetric(horizontal: 32),
-            child: Column(
-              mainAxisSize: MainAxisSize.min,
-              children: [
-                const Icon(
-                  Icons.movie_filter_outlined,
-                  size: 48,
-                  color: Colors.white38,
-                ),
-                const SizedBox(height: 12),
-                Text(
-                  l10n.noEpisodesYet,
-                  textAlign: TextAlign.center,
-                  style: const TextStyle(color: Colors.white70),
-                ),
-                const SizedBox(height: 16),
-                FilledButton(onPressed: _load, child: Text(l10n.retry)),
-              ],
-            ),
-          ),
+        body: EmptyState(
+          key: const Key('drama-detail-empty'),
+          icon: Icons.video_library_outlined,
+          title: l10n.noEpisodesYet,
+          subtitle: l10n.emptyHint,
+          actionLabel: l10n.retry,
+          onAction: _load,
         ),
       );
     }

lib/pages/favorites/favorites_page.dart

@@ -12,6 +12,7 @@ import '../../core/formatting/error_text.dart';
 import '../../core/platform/haptics.dart';
 import '../../core/theme/app_theme.dart';
 import '../../core/widgets/auth_gate.dart';
+import '../../core/widgets/empty_state.dart';
 import '../../core/widgets/library_drama_tile.dart';
 import '../../l10n/app_localizations.dart';
 import '../drama_detail/drama_detail_view.dart';
@@ -101,12 +102,11 @@ class _FavoritesBody extends StatelessWidget {
       );
     }
     if (favorites.cards.isEmpty) {
-      return Center(
+      return EmptyState(
         key: const Key('favorites-empty'),
-        child: Text(
-          l10n.noFavorites,
-          style: const TextStyle(color: Colors.white70),
-        ),
+        icon: Icons.favorite_border_rounded,
+        title: l10n.noFavorites,
+        subtitle: l10n.emptyHint,
       );
     }
     return RefreshIndicator(

lib/pages/home/home_view.dart

@@ -14,6 +14,7 @@ import '../../core/platform/haptics.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_theme.dart';
 import '../../core/widgets/auth_gate.dart';
+import '../../core/widgets/empty_state.dart';
 import '../../l10n/app_localizations.dart';
 import '../discover/discover_view.dart';
 import '../mine/mine_view.dart';
@@ -46,14 +47,20 @@ class HomePage extends StatelessWidget {
         body: Center(child: CircularProgressIndicator()),
       );
     }
-    if (catalog.error != null || catalog.dramas.isEmpty) {
+    if (catalog.error != null) {
       return Scaffold(
         backgroundColor: Colors.black,
         body: Center(
           child: Column(
             mainAxisSize: MainAxisSize.min,
             children: [
-              Text(catalog.error == null ? l10n.noStories : l10n.catalogError),
+              const Icon(
+                Icons.error_outline_rounded,
+                color: Colors.white70,
+                size: 40,
+              ),
+              const SizedBox(height: 12),
+              Text(l10n.catalogError),
               const SizedBox(height: 12),
               FilledButton(onPressed: catalog.load, child: Text(l10n.retry)),
               if (kDebugMode) ...[
@@ -68,6 +75,19 @@ class HomePage extends StatelessWidget {
         ),
       );
     }
+    if (catalog.dramas.isEmpty) {
+      return Scaffold(
+        backgroundColor: Colors.black,
+        body: EmptyState(
+          key: const Key('home-empty'),
+          icon: Icons.movie_outlined,
+          title: l10n.noStories,
+          subtitle: l10n.emptyHint,
+          actionLabel: l10n.retry,
+          onAction: catalog.load,
+        ),
+      );
+    }
 
     return _HomeTabs(
       key: ValueKey(catalog.dramas.first.id),

lib/pages/mine/mine_view.dart

@@ -12,6 +12,7 @@ import '../../core/data/services/auth_controller.dart';
 import '../../core/data/services/interaction_controller.dart';
 import '../../core/data/services/favorite_controller.dart';
 import '../../core/formatting/error_text.dart';
+import '../../core/widgets/empty_state.dart';
 import '../../core/widgets/remote_image.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_theme.dart';
@@ -670,12 +671,11 @@ class _MyPageState extends State<MyPage> {
             const SizedBox(height: 9),
           ]
         else
-          Padding(
-            padding: const EdgeInsets.symmetric(vertical: 22),
-            child: Text(
-              l10n.noSavedShows,
-              style: const TextStyle(color: Color(0xFFE6E1E3)),
-            ),
+          EmptyState(
+            key: const Key('mine-saved-empty'),
+            icon: Icons.bookmark_border_rounded,
+            title: l10n.noSavedShows,
+            subtitle: l10n.emptyHint,
           ),
         // 最近观看（服务端 /app/watch/recent）：只渲染能在已加载目录里匹配到的剧；
         // 匹配不到的（例如不在当前首页分区里）先不显示，K2 的记录页会做独立请求。
@@ -732,9 +732,11 @@ class _MyPageState extends State<MyPage> {
               ],
             )
           else if (_recentDramas.isEmpty)
-            Text(
-              l10n.noStories,
-              style: const TextStyle(color: Color(0xFFB7B3B8)),
+            EmptyState(
+              key: const Key('mine-recent-empty'),
+              icon: Icons.history_rounded,
+              title: l10n.noStories,
+              subtitle: l10n.emptyHint,
             )
           else
             for (final drama in _recentDramas) ...[

lib/pages/notices/notices_page.dart

@@ -12,6 +12,7 @@ import '../../core/formatting/error_text.dart';
 import '../../core/formatting/localized_date_time.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_theme.dart';
+import '../../core/widgets/empty_state.dart';
 import '../../l10n/app_localizations.dart';
 
 /// Anonymous system notice list with pagination and detail dialog.
@@ -109,12 +110,11 @@ class _NoticesPageState extends State<NoticesPage> {
           children: [
             SizedBox(
               height: MediaQuery.sizeOf(context).height * 0.7,
-              child: Center(
+              child: EmptyState(
                 key: const Key('notices-empty'),
-                child: Text(
-                  l10n.noNotices,
-                  style: const TextStyle(color: AppColors.muted),
-                ),
+                icon: Icons.notifications_none_rounded,
+                title: l10n.noNotices,
+                subtitle: l10n.emptyHint,
               ),
             ),
           ],

lib/pages/player/widgets/drama_comments_sheet.dart

@@ -14,6 +14,7 @@ import '../../../core/formatting/error_text.dart';
 import '../../../core/platform/haptics.dart';
 import '../../../core/theme/app_colors.dart';
 import '../../../core/widgets/auth_gate.dart';
+import '../../../core/widgets/empty_state.dart';
 import '../../../l10n/app_localizations.dart';
 import '../../interaction/widgets/report_dialog.dart';
 import 'comment_tile.dart';
@@ -219,12 +220,11 @@ class _DramaCommentsSheetState extends State<DramaCommentsSheet> {
       );
     }
     if (_controller.comments.isEmpty) {
-      return Center(
+      return EmptyState(
         key: const Key('comment-list-empty'),
-        child: Text(
-          l10n.noComments,
-          style: const TextStyle(color: AppColors.muted),
-        ),
+        icon: Icons.chat_bubble_outline_rounded,
+        title: l10n.noComments,
+        compact: true,
       );
     }
     return ListView.builder(

lib/pages/watch_records/watch_records_page.dart

@@ -17,6 +17,7 @@ import '../../core/platform/haptics.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_theme.dart';
 import '../../core/widgets/auth_gate.dart';
+import '../../core/widgets/empty_state.dart';
 import '../../core/widgets/remote_image.dart';
 import '../../l10n/app_localizations.dart';
 import '../drama_detail/drama_detail_view.dart';
@@ -92,11 +93,11 @@ class _WatchRecordsBodyState extends State<_WatchRecordsBody> {
       );
     }
     if (controller.records.isEmpty) {
-      return Center(
-        child: Text(
-          l10n.noWatchRecords,
-          style: const TextStyle(color: Colors.white70),
-        ),
+      return EmptyState(
+        key: const Key('watch-records-empty'),
+        icon: Icons.history_rounded,
+        title: l10n.noWatchRecords,
+        subtitle: l10n.emptyHint,
       );
     }
     return Column(