링크로 로그인 수정

userfront/lib/features/auth/presentation/qr_scan_screen_stub.dart

@@ -0,0 +1,86 @@
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+import 'package:userfront/i18n.dart';
+
+import 'qr_scan_route.dart';
+
+class QRScanScreen extends StatefulWidget {
+  const QRScanScreen({super.key});
+
+  @override
+  State<QRScanScreen> createState() => _QRScanScreenState();
+}
+
+class _QRScanScreenState extends State<QRScanScreen> {
+  final TextEditingController _controller = TextEditingController();
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  void _submit() {
+    final raw = _controller.text.trim();
+    if (raw.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(
+            tr(
+              'msg.userfront.qr.permission_required',
+              fallback: '카메라 권한이 필요합니다.',
+            ),
+          ),
+        ),
+      );
+      return;
+    }
+    context.go(buildQrApprovePath(raw));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(tr('ui.userfront.qr.title', fallback: 'Scan QR Code')),
+        leading: IconButton(
+          icon: const Icon(Icons.arrow_back),
+          onPressed: () => context.pop(),
+        ),
+      ),
+      body: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            Text(
+              tr(
+                'msg.userfront.qr.permission_error',
+                fallback: '카메라 권한 요청에 실패했습니다. 브라우저/OS 설정을 확인해주세요.',
+              ),
+            ),
+            const SizedBox(height: 12),
+            TextField(
+              key: const ValueKey('qr_scan_manual_input'),
+              controller: _controller,
+              decoration: const InputDecoration(
+                labelText: 'QR Payload',
+                hintText: 'https://.../ql/{ref} 또는 ref',
+              ),
+              onSubmitted: (_) => _submit(),
+            ),
+            const SizedBox(height: 12),
+            FilledButton.icon(
+              key: const ValueKey('qr_scan_submit_button'),
+              onPressed: _submit,
+              icon: const Icon(Icons.check_circle),
+              label: Text(
+                tr('ui.userfront.qr.result_success', fallback: '승인 화면으로 이동'),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}