feat(mining-app): 二维码扫描支持从相册选择图片识别

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

.claude/settings.local.json

@@ -815,7 +815,17 @@
       "WebFetch(domain:oneuptime.com)",
       "Bash(gradlew.bat assembleDebug:*)",
       "Bash(cmd /c \"gradlew.bat assembleDebug --no-daemon\")",
-      "Bash(./build-install-debug.bat)"
+      "Bash(./build-install-debug.bat)",
+      "Bash(dir /s /b \"backend\\\\mpc-system\\\\services\\\\service-party-android\\\\*.kt\")",
+      "Bash(set DATABASE_URL=postgresql://postgres:password@localhost:5432/trading_db?schema=public)",
+      "Bash(ssh -o ProxyJump=ceshi@103.39.231.231 -o StrictHostKeyChecking=no ceshi@192.168.1.111 \"curl -s ''http://localhost:3000/api/v2/trading/asset/account/D25122700015'' | jq .\")",
+      "Bash(ssh -o ProxyJump=ceshi@103.39.231.231 -o StrictHostKeyChecking=no ceshi@192.168.1.111 \"curl -s ''http://localhost:3000/api/v2/trading/trading/orders?accountSequence=D25122700015'' | jq .\")",
+      "Bash(docker stop:*)",
+      "Bash(ssh-add:*)",
+      "Bash(ls -la \"c:\\\\Users\\\\dong\\\\Desktop\\\\rwadurian\\\\backend\\\\services\\\\auth-service\\\\src\"\" 2>/dev/null || echo \"Source directory structure: \")",
+      "Bash($env:DATABASE_URL=\"postgresql://postgres:postgres@localhost:5432/rwa_auth\")",
+      "Bash(DATABASE_URL=\"postgresql://postgres:postgres@localhost:5432/rwa_auth\" npx prisma migrate dev:*)",
+      "Bash(ssh -J ceshi@103.39.231.231 ceshi@192.168.1.111:*)"
     ],
     "deny": [],
     "ask": []

frontend/mining-app/lib/presentation/widgets/qr_scanner_sheet.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:image_picker/image_picker.dart';
 import 'package:mobile_scanner/mobile_scanner.dart';
 
 /// 二维码扫描底部弹窗
@@ -31,6 +32,7 @@ class _QrScannerSheetState extends State<QrScannerSheet> {
   );
 
   bool _hasScanned = false;
+  bool _isPickingImage = false;
 
   @override
   void dispose() {
@@ -51,6 +53,53 @@ class _QrScannerSheetState extends State<QrScannerSheet> {
     Navigator.of(context).pop(code);
   }
 
+  /// 从相册选择图片识别二维码
+  Future<void> _pickImageAndScan() async {
+    if (_isPickingImage || _hasScanned) return;
+    setState(() => _isPickingImage = true);
+
+    try {
+      final picker = ImagePicker();
+      final image = await picker.pickImage(source: ImageSource.gallery);
+      if (image == null) {
+        setState(() => _isPickingImage = false);
+        return;
+      }
+
+      final BarcodeCapture? capture = await _controller.analyzeImage(image.path);
+      if (capture != null && capture.barcodes.isNotEmpty) {
+        final code = capture.barcodes.first.rawValue;
+        if (code != null && code.isNotEmpty && !_hasScanned) {
+          _hasScanned = true;
+          if (mounted) Navigator.of(context).pop(code);
+          return;
+        }
+      }
+
+      // 未识别到二维码
+      if (mounted) {
+        setState(() => _isPickingImage = false);
+        ScaffoldMessenger.of(context).showSnackBar(
+          const SnackBar(
+            content: Text('未在图片中识别到二维码'),
+            backgroundColor: Colors.red,
+          ),
+        );
+      }
+    } catch (e) {
+      debugPrint('[QR_SCAN] pickImage error: $e');
+      if (mounted) {
+        setState(() => _isPickingImage = false);
+        ScaffoldMessenger.of(context).showSnackBar(
+          const SnackBar(
+            content: Text('图片识别失败，请重试'),
+            backgroundColor: Colors.red,
+          ),
+        );
+      }
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     final screenHeight = MediaQuery.of(context).size.height;
@@ -200,15 +249,42 @@ class _QrScannerSheetState extends State<QrScannerSheet> {
             ),
           ),
 
-          // 提示文字
+          // 提示文字 + 相册按钮
           Padding(
-            padding: const EdgeInsets.all(24),
-            child: Text(
-              '将二维码放入框内，即可自动扫描',
-              style: TextStyle(
-                fontSize: 14,
-                color: Colors.grey[600],
-              ),
+            padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 16),
+            child: Column(
+              children: [
+                Text(
+                  '将二维码放入框内，即可自动扫描',
+                  style: TextStyle(
+                    fontSize: 14,
+                    color: Colors.grey[600],
+                  ),
+                ),
+                const SizedBox(height: 12),
+                GestureDetector(
+                  onTap: _isPickingImage ? null : _pickImageAndScan,
+                  child: Row(
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    children: [
+                      Icon(
+                        Icons.photo_library_outlined,
+                        size: 18,
+                        color: _isPickingImage ? Colors.grey : _orange,
+                      ),
+                      const SizedBox(width: 6),
+                      Text(
+                        _isPickingImage ? '识别中...' : '从相册选择',
+                        style: TextStyle(
+                          fontSize: 14,
+                          color: _isPickingImage ? Colors.grey : _orange,
+                          fontWeight: FontWeight.w500,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ],
             ),
           ),
         ],

frontend/mining-app/pubspec.yaml

@@ -39,6 +39,7 @@ dependencies:
   shimmer: ^3.0.0
   qr_flutter: ^4.1.0
   mobile_scanner: ^5.1.1
+  image_picker: ^1.0.4
 
   # 图表
   fl_chart: ^0.64.0