fix(mining-app): C2C订单详情页自动刷新，列表刷新间隔缩短

- 订单详情 Provider 活跃状态(PENDING/MATCHED/PAID)每10秒自动刷新
  过期/完成/取消后停止刷新，节省资源
- 市场订单和我的订单列表刷新间隔从1分钟缩短到30秒
- 离开订单详情页时立即刷新市场和我的订单列表
  确保过期恢复的新PENDING订单及时在列表中显示

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mining-app/lib/presentation/pages/c2c/c2c_order_detail_page.dart

@@ -42,6 +42,16 @@ class _C2cOrderDetailPageState extends ConsumerState<C2cOrderDetailPage> {
     });
   }
 
+  @override
+  void dispose() {
+    // 离开详情页时刷新市场和我的订单列表（确保过期恢复的新订单及时显示）
+    ref.invalidate(c2cOrdersProvider(null));
+    ref.invalidate(c2cOrdersProvider('BUY'));
+    ref.invalidate(c2cOrdersProvider('SELL'));
+    ref.invalidate(myC2cOrdersProvider);
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     final orderAsync = ref.watch(c2cOrderDetailProvider(widget.orderNo));

frontend/mining-app/lib/presentation/providers/c2c_providers.dart

@@ -11,7 +11,7 @@ final c2cOrdersProvider = FutureProvider.family<C2cOrdersPageModel, String?>(
     final result = await dataSource.getC2cOrders(type: type);
 
     ref.keepAlive();
-    final timer = Timer(const Duration(minutes: 1), () {
+    final timer = Timer(const Duration(seconds: 30), () {
       ref.invalidateSelf();
     });
     ref.onDispose(() => timer.cancel());
@@ -27,7 +27,7 @@ final myC2cOrdersProvider = FutureProvider<C2cOrdersPageModel>(
     final result = await dataSource.getMyC2cOrders();
 
     ref.keepAlive();
-    final timer = Timer(const Duration(minutes: 1), () {
+    final timer = Timer(const Duration(seconds: 30), () {
       ref.invalidateSelf();
     });
     ref.onDispose(() => timer.cancel());
@@ -37,10 +37,21 @@ final myC2cOrdersProvider = FutureProvider<C2cOrdersPageModel>(
 );
 
 /// C2C订单详情 Provider（autoDispose: 每次进入详情页都获取最新数据）
+/// 活跃状态订单（PENDING/MATCHED/PAID）每10秒自动刷新，终态订单不刷新
 final c2cOrderDetailProvider = FutureProvider.autoDispose.family<C2cOrderModel, String>(
   (ref, orderNo) async {
     final dataSource = getIt<TradingRemoteDataSource>();
-    return dataSource.getC2cOrderDetail(orderNo);
+    final result = await dataSource.getC2cOrderDetail(orderNo);
+
+    // 活跃状态订单自动刷新（过期/完成/取消后停止刷新）
+    if (result.isPending || result.isMatched || result.isPaid) {
+      final timer = Timer(const Duration(seconds: 10), () {
+        ref.invalidateSelf();
+      });
+      ref.onDispose(() => timer.cancel());
+    }
+
+    return result;
   },
 );