fix: auto repair bugs #10

airhub_app/lib/features/badge/presentation/controllers/badge_transfer_controller.dart

@@ -46,7 +46,11 @@ class BadgeTransferController extends _$BadgeTransferController {
   void startScan() {
     if (!ref.mounted) return;
     state = state.copyWith(status: TransferStatus.scanning);
-    FlutterBluePlus.startScan(timeout: const Duration(seconds: 10));
+    FlutterBluePlus.startScan(timeout: const Duration(seconds: 10)).catchError((e) {
+      // Web 平台: 用户取消 requestDevice() 选择器会抛出异常
+      if (!ref.mounted) return;
+      state = state.copyWith(status: TransferStatus.idle);
+    });
 
     FlutterBluePlus.scanResults.listen((results) {
       if (!ref.mounted) return;

airhub_app/lib/features/badge/presentation/pages/badge_home_page.dart

@@ -29,7 +29,6 @@ class _BadgeHomePageState extends ConsumerState<BadgeHomePage>
   double _genProgress = 0;
   String _genStatus = '';
   String? _generatedImageUrl;
-  bool _hasAiResult = false;
 
   @override
   void initState() {
@@ -43,7 +42,6 @@ class _BadgeHomePageState extends ConsumerState<BadgeHomePage>
     final pending = BadgeAiGenerationService.instance.consumePendingResult();
     if (pending != null) {
       _generatedImageUrl = pending.imageUrl;
-      _hasAiResult = true;
     }
 
     // 注册 AI 服务回调
@@ -61,7 +59,6 @@ class _BadgeHomePageState extends ConsumerState<BadgeHomePage>
         setState(() {
           _isGenerating = false;
           _generatedImageUrl = result.imageUrl;
-          _hasAiResult = true;
         });
         _showResultDialog(result.imageUrl);
       }
@@ -213,7 +210,6 @@ class _BadgeHomePageState extends ConsumerState<BadgeHomePage>
     setState(() {
       _isGenerating = true;
       _generatedImageUrl = null;
-      _hasAiResult = false;
       _genProgress = 0;
       _genStatus = '正在连接 AI...';
     });
@@ -242,7 +238,6 @@ class _BadgeHomePageState extends ConsumerState<BadgeHomePage>
   void _handleRetry() {
     setState(() {
       _generatedImageUrl = null;
-      _hasAiResult = false;
     });
   }
 
@@ -420,9 +415,11 @@ class _BadgeHomePageState extends ConsumerState<BadgeHomePage>
     Widget? buttonContent;
 
     if (isAiTab) {
-      // 有结果时由弹窗处理，底部只显示"开始生成"
+      buttonContent = _buildGradientButton(
-      if (!_isGenerating && !_hasAiResult) {
+        '开始生成',
-        buttonContent = _buildGradientButton('开始生成', () {
+        _isGenerating
+            ? null
+            : () {
                 final aiState = _aiTabKey.currentState;
                 if (aiState == null) return;
                 final prompt = aiState.currentPrompt;
@@ -443,8 +440,8 @@ class _BadgeHomePageState extends ConsumerState<BadgeHomePage>
                   imageBytes: aiState.referenceImageBytes,
                   strength: aiState.strength,
                 );
-        });
+              },
-      }
+      );
     } else if (isUploadTab) {
       if (_uploadedImagePath != null) {
         buttonContent = _buildGradientButton('使用此图', _handleUseImage);
@@ -474,7 +471,7 @@ class _BadgeHomePageState extends ConsumerState<BadgeHomePage>
     );
   }
 
-  Widget _buildGradientButton(String label, VoidCallback onPressed) {
+  Widget _buildGradientButton(String label, VoidCallback? onPressed) {
     return SizedBox(
       height: 52,
       child: DecoratedBox(

airhub_app/lib/features/badge/presentation/pages/badge_transfer_page.dart

@@ -45,7 +45,10 @@ class _BadgeTransferPageState extends ConsumerState<BadgeTransferPage> {
   }
 
   void _startScan() {
-    FlutterBluePlus.startScan(timeout: const Duration(seconds: 10));
+    FlutterBluePlus.startScan(timeout: const Duration(seconds: 10)).catchError((e) {
+      // Web 平台: 用户取消 requestDevice() 选择器会抛出异常
+      debugPrint('[Badge BLE] startScan 异常（用户可能取消了选择器）: $e');
+    });
   }
 
   @override

airhub_app/lib/pages/bluetooth_page.dart

@@ -218,10 +218,19 @@ class _BluetoothPageState extends ConsumerState<BluetoothPage>
     });
 
     // 持续扫描（不设超时），由 _queryDeviceByMac 成功后停止
+    try {
       await FlutterBluePlus.startScan(
         timeout: const Duration(seconds: 30),
         androidUsesFineLocation: true,
       );
+    } catch (e) {
+      // Web 平台: 用户取消 requestDevice() 选择器会抛出 FlutterBluePlusException
+      debugPrint('[BLE Scan] startScan 异常（用户可能取消了选择器）: $e');
+      if (mounted) {
+        setState(() => _isSearching = false);
+      }
+      return;
+    }
 
     // 30 秒兜底超时：如果始终没找到设备
     if (mounted && _isSearching) {