fix(mining-app): 修复转账二维码扫描无效问题

- 修改二维码生成格式为 durian://transfer/?phone=xxx (添加路径分隔符)
- 更新解析函数使用正则匹配，兼容新旧格式

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

frontend/mining-app/lib/presentation/pages/asset/receive_shares_page.dart

@@ -156,7 +156,7 @@ class ReceiveSharesPage extends ConsumerWidget {
               ),
             ),
             child: QrImageView(
-              data: 'durian://transfer?phone=$phone',
+              data: 'durian://transfer/?phone=$phone',
               version: QrVersions.auto,
               size: 200,
               backgroundColor: Colors.white,

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

@@ -246,11 +246,23 @@ class _QrScannerSheetState extends State<QrScannerSheet> {
 }
 
 /// 解析转账二维码
-/// 格式: durian://transfer?phone={phone}
+/// 格式: durian://transfer/?phone={phone} 或 durian://transfer?phone={phone}
 /// 返回手机号，解析失败返回 null
 String? parseTransferQrCode(String qrCode) {
   try {
-    final uri = Uri.parse(qrCode);
+    final trimmed = qrCode.trim();
+
+    // 使用正则表达式匹配，兼容有无 / 的格式
+    // durian://transfer/?phone=xxx 或 durian://transfer?phone=xxx
+    final regex = RegExp(r'^durian://transfer/?[?]phone=(\d{11})$');
+    final match = regex.firstMatch(trimmed);
+
+    if (match != null) {
+      return match.group(1);
+    }
+
+    // 备用方案：使用 Uri.parse
+    final uri = Uri.parse(trimmed);
 
     // 检查 scheme
     if (uri.scheme != 'durian') return null;