feat(ui): 更新品牌启动页与选集交互

lib/pages/notices/notices_page.dart

@@ -74,28 +74,17 @@ class _NoticesPageState extends State<NoticesPage> {
           children: [
             SizedBox(
               height: MediaQuery.sizeOf(context).height * 0.7,
-              child: Center(
+              child: EmptyState(
                 key: const Key('notices-error'),
-                child: Column(
-                  mainAxisSize: MainAxisSize.min,
-                  children: [
-                    Text(
-                      errorText(
-                        l10n,
-                        _controller.error,
-                        l10n.noticesLoadFailed,
-                      ),
-                      textAlign: TextAlign.center,
-                      style: const TextStyle(color: AppColors.muted),
-                    ),
-                    const SizedBox(height: 12),
-                    FilledButton(
-                      key: const Key('notices-retry'),
-                      onPressed: _controller.load,
-                      child: Text(l10n.retry),
-                    ),
-                  ],
+                icon: Icons.cloud_off_rounded,
+                title: errorText(
+                  l10n,
+                  _controller.error,
+                  l10n.noticesLoadFailed,
                 ),
+                actionLabel: l10n.retry,
+                actionKey: const Key('notices-retry'),
+                onAction: _controller.load,
               ),
             ),
           ],