chore: release client-v1.0.61

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

client/lib/screens/auth/login_screen.dart

@@ -8,6 +8,7 @@ import 'package:go_router/go_router.dart';
 import 'package:url_launcher/url_launcher.dart';
 import '../../core/auth/auth_state.dart';
 import '../../core/config/app_config.dart';
+import '../../core/config/app_constants.dart';
 import '../../core/theme/app_theme.dart';
 import '../../core/storage/login_history.dart';
 import '../../providers/connectivity_provider.dart';
@@ -73,7 +74,8 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
       } else {
         // 延迟关闭：让候选词的 onTap（pointer-up）先执行，再关闭下拉框
         _closeHotelTimer?.cancel();
-        _closeHotelTimer = Timer(const Duration(milliseconds: 150), _closeHotel);
+        _closeHotelTimer =
+            Timer(AppConstants.dropdownCloseDelay, _closeHotel);
       }
     });
     _usernameFocus.addListener(() {
@@ -88,7 +90,8 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
         });
       } else {
         _closeUsernameTimer?.cancel();
-        _closeUsernameTimer = Timer(const Duration(milliseconds: 150), _closeUsername);
+        _closeUsernameTimer =
+            Timer(AppConstants.dropdownCloseDelay, _closeUsername);
       }
     });
   }