feat(flutter): 统一空列表占位组件

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),