fix(mobile-app): 升级弹窗显示时跳过合同/KYC后台检查

- UpdateService 添加 isShowingUpdateDialog 状态
- home_shell_page 在升级、合同签署、KYC页面均跳过后台弹窗

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

frontend/mobile-app/lib/core/updater/update_service.dart

@@ -19,10 +19,14 @@ class UpdateService {
   late UpdateConfig _config;
   SelfHostedUpdater? _selfHostedUpdater;
   bool _isInitialized = false;
+  bool _isShowingUpdateDialog = false;
 
   /// 是否已初始化
   bool get isInitialized => _isInitialized;
 
+  /// 是否正在显示升级弹窗
+  bool get isShowingUpdateDialog => _isShowingUpdateDialog;
+
   /// 当前配置
   UpdateConfig get config => _config;
 
@@ -64,13 +68,18 @@ class UpdateService {
       return;
     }
 
-    switch (_config.channel) {
-      case UpdateChannel.googlePlay:
-        await _checkGooglePlayUpdate(context);
-        break;
-      case UpdateChannel.selfHosted:
-        await _selfHostedUpdater!.checkAndPromptUpdate(context);
-        break;
+    _isShowingUpdateDialog = true;
+    try {
+      switch (_config.channel) {
+        case UpdateChannel.googlePlay:
+          await _checkGooglePlayUpdate(context);
+          break;
+        case UpdateChannel.selfHosted:
+          await _selfHostedUpdater!.checkAndPromptUpdate(context);
+          break;
+      }
+    } finally {
+      _isShowingUpdateDialog = false;
     }
   }
 
@@ -99,7 +108,7 @@ class UpdateService {
 
     if (!context.mounted) return;
 
-    showDialog(
+    await showDialog(
       context: context,
       builder: (context) => AlertDialog(
         title: Text(

frontend/mobile-app/lib/features/home/presentation/pages/home_shell_page.dart

@@ -6,6 +6,7 @@ import 'package:go_router/go_router.dart';
 import '../../../../core/theme/app_colors.dart';
 import '../../../../core/di/injection_container.dart';
 import '../../../../core/services/contract_check_service.dart';
+import '../../../../core/updater/update_service.dart';
 import '../../../../routes/route_paths.dart';
 import '../../../../bootstrap.dart';
 import '../widgets/bottom_nav_bar.dart';
@@ -100,8 +101,14 @@ class _HomeShellPageState extends ConsumerState<HomeShellPage>
     });
   }
 
-  /// 检查当前是否在合同签署或KYC相关页面
-  bool _isOnContractOrKycPage() {
+  /// 检查当前是否在合同签署或KYC相关页面，或者正在显示升级弹窗
+  bool _shouldSkipContractCheck() {
+    // 1. 检查是否正在显示升级弹窗
+    if (UpdateService().isShowingUpdateDialog) {
+      return true;
+    }
+
+    // 2. 检查是否在合同/KYC页面
     try {
       final location = GoRouterState.of(context).uri.path;
       // 合同签署相关页面
@@ -118,9 +125,9 @@ class _HomeShellPageState extends ConsumerState<HomeShellPage>
   Future<void> _performBackgroundContractCheck() async {
     if (!mounted || _isShowingDialog) return;
 
-    // 如果用户在合同签署或KYC页面，跳过检查
-    if (_isOnContractOrKycPage()) {
-      debugPrint('[HomeShellPage] 用户在合同/KYC页面，跳过后台检查');
+    // 如果用户在合同签署、KYC页面，或正在升级，跳过检查
+    if (_shouldSkipContractCheck()) {
+      debugPrint('[HomeShellPage] 用户在合同/KYC/升级页面，跳过后台检查');
       return;
     }
 
@@ -132,9 +139,9 @@ class _HomeShellPageState extends ConsumerState<HomeShellPage>
 
       if (!mounted || _isShowingDialog) return;
 
-      // 再次检查，防止在请求期间用户进入了相关页面
-      if (_isOnContractOrKycPage()) {
-        debugPrint('[HomeShellPage] 用户已进入合同/KYC页面，跳过弹窗');
+      // 再次检查，防止在请求期间用户进入了相关页面或开始升级
+      if (_shouldSkipContractCheck()) {
+        debugPrint('[HomeShellPage] 用户已进入合同/KYC/升级页面，跳过弹窗');
         return;
       }