chore: release client-v1.0.57

设备/状态管理屏（查看本店在线设备/会话，管理员可强制下线）、登录携带设备信息、
会话心跳（/auth/ping）、被踢下线/会话失效提示、顶栏精简 + 用户名移至左侧栏底部。

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

client/lib/core/router/app_router.dart

@@ -17,6 +17,7 @@ import '../../screens/public/public_product_screen.dart';
 import '../../screens/public/public_shop_products_screen.dart';
 import '../../screens/settings/settings_screen.dart';
 import '../../screens/about/about_screen.dart';
+import '../../screens/devices/device_management_screen.dart';
 import '../auth/auth_state.dart';
 
 Page<void> _noTransition(Widget child) =>
@@ -142,6 +143,10 @@ final appRouterProvider = Provider<GoRouter>((ref) {
           GoRoute(
               path: '/settings',
               pageBuilder: (_, __) => _noTransition(const SettingsScreen())),
+          GoRoute(
+              path: '/devices',
+              pageBuilder: (_, __) =>
+                  _noTransition(const DeviceManagementScreen())),
           GoRoute(
               path: '/about',
               pageBuilder: (_, __) => _noTransition(const AboutScreen())),