i18n 대대적 변경

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

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 import '../../../core/constants/error_whitelist.dart';
 import '../../../core/services/auth_proxy_service.dart';
+import 'package:userfront/i18n.dart';
 
 class ErrorScreen extends StatelessWidget {
   final String? errorId;
@@ -23,19 +24,38 @@ class ErrorScreen extends StatelessWidget {
     final isProd = isProdOverride ?? AuthProxyService.isProdEnv;
     final normalizedCode = (errorCode ?? '').trim();
     final hasCode = normalizedCode.isNotEmpty;
-    final whitelistMessage = errorWhitelistMessages[normalizedCode];
-    final isWhitelisted = whitelistMessage != null;
+    final whitelistFallback = errorWhitelistMessages[normalizedCode];
+    final isWhitelisted = whitelistFallback != null;
     final errorType = isProd
         ? (isWhitelisted && hasCode ? normalizedCode : 'unknown_error')
         : (hasCode ? normalizedCode : 'unknown_error');
     final title = isProd
-        ? '인증 과정에서 오류가 발생했습니다'
-        : (hasCode ? '오류: $normalizedCode' : '오류가 발생했습니다');
+        ? tr('msg.userfront.error.title', fallback: '인증 과정에서 오류가 발생했습니다')
+        : (hasCode
+            ? tr(
+                'msg.userfront.error.title_with_code',
+                fallback: '오류: {{code}}',
+                params: {'code': normalizedCode},
+              )
+            : tr('msg.userfront.error.title_generic', fallback: '오류가 발생했습니다'));
     final detail = isProd
-        ? (isWhitelisted ? whitelistMessage! : '에러가 계속되면 관리자에게 문의해주세요')
+        ? (isWhitelisted
+            ? tr(
+                'msg.userfront.error.whitelist.$normalizedCode',
+                fallback: whitelistFallback,
+              )
+            : tr(
+                'msg.userfront.error.detail_contact',
+                fallback: '에러가 계속되면 관리자에게 문의해주세요',
+              ))
         : ((description?.isNotEmpty == true)
             ? description!
-            : (hasCode ? '오류가 발생했습니다.' : '요청을 처리하는 중 문제가 발생했습니다.'));
+            : (hasCode
+                ? tr('msg.userfront.error.detail_generic', fallback: '오류가 발생했습니다.')
+                : tr(
+                    'msg.userfront.error.detail_request',
+                    fallback: '요청을 처리하는 중 문제가 발생했습니다.',
+                  )));
 
     return Scaffold(
       backgroundColor: const Color(0xFFF7F8FA),
@@ -72,7 +92,11 @@ class ErrorScreen extends StatelessWidget {
                   ),
                   const SizedBox(height: 12),
                   Text(
-                    '오류 종류: $errorType',
+                    tr(
+                      'msg.userfront.error.type',
+                      fallback: '오류 종류: {{type}}',
+                      params: {'type': errorType},
+                    ),
                     style: theme.textTheme.bodySmall?.copyWith(
                       color: const Color(0xFF6B7280),
                     ),
@@ -80,7 +104,11 @@ class ErrorScreen extends StatelessWidget {
                   if (errorId != null && errorId!.isNotEmpty) ...[
                     const SizedBox(height: 12),
                     Text(
-                      '오류 ID: $errorId',
+                      tr(
+                        'msg.userfront.error.id',
+                        fallback: '오류 ID: {{id}}',
+                        params: {'id': errorId!},
+                      ),
                       style: theme.textTheme.bodySmall?.copyWith(
                         color: const Color(0xFF6B7280),
                       ),
@@ -101,7 +129,9 @@ class ErrorScreen extends StatelessWidget {
                             borderRadius: BorderRadius.circular(10),
                           ),
                         ),
-                        child: const Text('로그인으로 이동'),
+                        child: Text(
+                          tr('ui.userfront.error.go_login', fallback: '로그인으로 이동'),
+                        ),
                       ),
                       OutlinedButton(
                         onPressed: () => context.go('/'),
@@ -113,7 +143,9 @@ class ErrorScreen extends StatelessWidget {
                             borderRadius: BorderRadius.circular(10),
                           ),
                         ),
-                        child: const Text('홈으로 이동'),
+                        child: Text(
+                          tr('ui.userfront.error.go_home', fallback: '홈으로 이동'),
+                        ),
                       ),
                     ],
                   ),