新增：三方支付完整调用

lib/core/api/services/payment_api.dart

@@ -88,6 +88,21 @@ abstract final class PaymentApi {
     );
   }
 
+  /// 获取订单详情（用于三方支付 webview 关闭后轮询）
+  static Future<ApiResponse> getOrderDetail({
+    required String asset,
+    required String federation,
+  }) async {
+    return _client.request(
+      path: '/v1/payment/getOrderDetail',
+      method: 'GET',
+      queryParams: {
+        'asset': asset,
+        'federation': federation,
+      },
+    );
+  }
+
   /// Google 支付结果回调。body 为 sample(signature)、merchant(purchaseData)、federation(id)、asset(userId)，见 docs/googlepay.md。
   static Future<ApiResponse> googlepay({
     required String sample,

lib/features/profile/profile_screen.dart

@@ -80,7 +80,7 @@ class _ProfileScreenState extends State<ProfileScreen> {
                   icon: LucideIcons.chevron_right,
                   onTap: () => Navigator.of(context).push(
                     MaterialPageRoute<void>(
-                      builder: (_) => PaymentWebViewScreen(
+                      builder: (_) => const PaymentWebViewScreen(
                         paymentUrl: 'http://www.petsheroai.xyz/privacy.html',
                         title: 'Privacy Policy',
                       ),
@@ -92,7 +92,7 @@ class _ProfileScreenState extends State<ProfileScreen> {
                   icon: LucideIcons.chevron_right,
                   onTap: () => Navigator.of(context).push(
                     MaterialPageRoute<void>(
-                      builder: (_) => PaymentWebViewScreen(
+                      builder: (_) => const PaymentWebViewScreen(
                         paymentUrl: 'http://www.petsheroai.xyz/terms.html',
                         title: 'User Agreement',
                       ),
@@ -143,18 +143,18 @@ class _ProfileHeader extends StatelessWidget {
                 ? CachedNetworkImage(
                     imageUrl: avatarUrl!,
                     fit: BoxFit.cover,
-                    placeholder: (_, __) => Icon(
+                    placeholder: (_, __) => const Icon(
                       LucideIcons.user,
                       size: 40,
                       color: AppColors.textSecondary,
                     ),
-                    errorWidget: (_, __, ___) => Icon(
+                    errorWidget: (_, __, ___) => const Icon(
                       LucideIcons.user,
                       size: 40,
                       color: AppColors.textSecondary,
                     ),
                   )
-                : Icon(
+                : const Icon(
                     LucideIcons.user,
                     size: 40,
                     color: AppColors.textSecondary,
@@ -162,7 +162,7 @@ class _ProfileHeader extends StatelessWidget {
           ),
           const SizedBox(height: AppSpacing.lg),
           Text(
-            userName ?? 'Guest',
+            userName ?? 'VIP',
             style: AppTypography.bodyLarge.copyWith(
               color: AppColors.textPrimary,
             ),
@@ -210,11 +210,11 @@ class _BalanceCard extends StatelessWidget {
       decoration: BoxDecoration(
         color: AppColors.surface,
         borderRadius: BorderRadius.circular(16),
-        boxShadow: [
+        boxShadow: const [
           BoxShadow(
             color: AppColors.shadowLight,
             blurRadius: 8,
-            offset: const Offset(0, 2),
+            offset: Offset(0, 2),
           ),
         ],
       ),
@@ -314,11 +314,11 @@ class _MenuItem extends StatelessWidget {
         decoration: BoxDecoration(
           color: AppColors.surface,
           borderRadius: BorderRadius.circular(12),
-          boxShadow: [
+          boxShadow: const [
             BoxShadow(
               color: AppColors.shadowLight,
               blurRadius: 6,
-              offset: const Offset(0, 2),
+              offset: Offset(0, 2),
             ),
           ],
         ),

lib/features/recharge/recharge_screen.dart

@@ -275,6 +275,9 @@ class _RechargeScreenState extends State<RechargeScreen>
               builder: (_) => PaymentWebViewScreen(paymentUrl: payUrl),
             ),
           );
+          if (mounted && orderId != null && orderId.isNotEmpty) {
+            _startOrderPolling(orderId: orderId, userId: userId);
+          }
           _showSnackBar(
               context, 'Order created. Complete payment in the page.');
           AdjustEvents.trackPurchaseSuccess();
@@ -299,6 +302,42 @@ class _RechargeScreenState extends State<RechargeScreen>
     }
   }
 
+  /// 三方支付 webview 关闭后轮询订单详情，间隔 1/3/7/15/31/63 秒；status 为 SUCCESS|FAILED|CANCELED 或订单不存在或轮询结束则停止；SUCCESS 时刷新用户信息
+  void _startOrderPolling({required String orderId, required String userId}) {
+    const delays = [1, 2, 4, 8, 16, 32]; // 累计 1,3,7,15,31,63 秒
+    Future<void> poll(int index) async {
+      if (index >= delays.length) return;
+      await Future<void>.delayed(Duration(seconds: delays[index]));
+      if (!mounted) return;
+      try {
+        final res = await PaymentApi.getOrderDetail(
+          asset: userId,
+          federation: orderId,
+        );
+        if (!mounted) return;
+        if (!res.isSuccess || res.data == null) {
+          RechargeScreen._log.d('订单轮询 orderId=$orderId 订单不存在或请求失败');
+          return;
+        }
+        final data = res.data as Map<String, dynamic>?;
+        final status = data?['line']?.toString().toUpperCase();
+        RechargeScreen._log.d('订单轮询 orderId=$orderId status=$status');
+        if (status == 'SUCCESS' || status == 'FAILED' || status == 'CANCELED') {
+          if (status == 'SUCCESS') {
+            refreshAccount();
+          }
+          return;
+        }
+        poll(index + 1);
+      } catch (e) {
+        RechargeScreen._log.w('订单轮询异常 orderId=$orderId: $e');
+        poll(index + 1);
+      }
+    }
+
+    poll(0);
+  }
+
   /// ceremony==GooglePay 或 resource==GOOGLEPAY 时走谷歌内购并上报
   static bool _isGooglePay(String paymentMethod, String? subPaymentMethod) {
     final r = paymentMethod.trim().toLowerCase();
@@ -534,8 +573,8 @@ class _RechargeScreenState extends State<RechargeScreen>
                 else
                   ...List.generate(_activities.length, (i) {
                     final item = _activities[i];
-                    final isRecommended = false;
-                    final isPopular = false;
+                    const isRecommended = false;
+                    const isPopular = false;
                     return Padding(
                       padding: EdgeInsets.only(
                         bottom: i < _activities.length - 1 ? AppSpacing.xl : 0,
@@ -760,13 +799,13 @@ class _PaymentIcon extends StatelessWidget {
           ? Image.network(
               iconUrl!,
               fit: BoxFit.contain,
-              errorBuilder: (_, __, ___) => Icon(
+              errorBuilder: (_, __, ___) => const Icon(
                 LucideIcons.credit_card,
                 size: 24,
                 color: AppColors.primary,
               ),
             )
-          : Icon(
+          : const Icon(
               LucideIcons.credit_card,
               size: 24,
               color: AppColors.primary,
@@ -825,11 +864,11 @@ class _TierCardFromActivity extends StatelessWidget {
         color: AppColors.surface,
         borderRadius: BorderRadius.circular(16),
         border: Border.all(color: AppColors.border),
-        boxShadow: [
+        boxShadow: const [
           BoxShadow(
             color: AppColors.shadowLight,
             blurRadius: 6,
-            offset: const Offset(0, 2),
+            offset: Offset(0, 2),
           ),
         ],
       ),
@@ -962,7 +1001,7 @@ class _CreditsSection extends StatelessWidget {
       ),
       child: Row(
         children: [
-          Icon(LucideIcons.sparkles, size: 28, color: AppColors.surface),
+          const Icon(LucideIcons.sparkles, size: 28, color: AppColors.surface),
           const SizedBox(width: AppSpacing.md),
           Text(
             currentCredits,