fix(ui): 修改行情页面英文为中文

- 'Search markets...' → '搜索市场...'
- 'All' → '全部'
- 'Real-time' → '实时'
- 'Hot' → '热门'

确保行情页面的所有文字都是中文

flutter_monisuo/lib/ui/pages/market/market_page.dart

@@ -74,7 +74,7 @@ class _MarketPageState extends State<MarketPage> with AutomaticKeepAliveClientMi
           onChanged: provider.search,
           style: TextStyle(color: AppColorScheme.darkOnSurface),
           decoration: InputDecoration(
-            hintText: 'Search markets...',
+            hintText: '搜索市场...',
             hintStyle: TextStyle(color: AppColorScheme.darkOnSurfaceVariant),
             prefixIcon: Icon(
               LucideIcons.search,
@@ -107,9 +107,9 @@ class _MarketPageState extends State<MarketPage> with AutomaticKeepAliveClientMi
 
   Widget _buildTabs(MarketProvider provider) {
     final tabs = [
-      {'key': 'all', 'label': 'All'},
-      {'key': 'realtime', 'label': 'Real-time'},
-      {'key': 'hot', 'label': 'Hot'},
+      {'key': 'all', 'label': '全部'},
+      {'key': 'realtime', 'label': '实时'},
+      {'key': 'hot', 'label': '热门'},
     ];
 
     return Container(