i18n 대대적 변경

userfront/test/dashboard_providers_test.dart

@@ -1,8 +1,11 @@
+import 'dart:ui';
+
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import 'package:userfront/features/dashboard/domain/dashboard_providers.dart';
 import 'package:userfront/features/dashboard/domain/models.dart';
+import 'package:userfront/i18n.dart';
 
 AuditLogEntry _log(String id) {
   return AuditLogEntry.fromJson({
@@ -21,6 +24,14 @@ Future<void> _drainMicrotasks() async {
 
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
+  final dispatcher = TestWidgetsFlutterBinding.instance.platformDispatcher;
+  dispatcher.localeTestValue = const Locale('ko');
+  dispatcher.localesTestValue = const [Locale('ko')];
+
+  tearDownAll(() {
+    dispatcher.clearLocaleTestValue();
+    dispatcher.clearLocalesTestValue();
+  });
 
   test('AuthTimelineNotifier는 초기 페이지를 로드한다', () async {
     final cursors = <String?>[];
@@ -103,7 +114,13 @@ void main() {
 
     final state = container.read(authTimelineProvider);
     expect(state.items.isEmpty, true);
-    expect(state.error, '접속이력을 불러오지 못했습니다.');
+    expect(
+      state.error,
+      tr(
+        'msg.userfront.dashboard.timeline.load_error',
+        fallback: '접속이력을 불러오지 못했습니다.',
+      ),
+    );
     container.dispose();
   });
 }