feat: align shared app foundations

lib/app/app.dart

@@ -4,6 +4,7 @@ import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:shadcn_ui/shadcn_ui.dart';
 
 import '../common/router/app_router.dart';
+import '../common/lifecycle/refresh_coordinator.dart';
 import '../common/theme/jinzhi_theme.dart';
 import '../common/theme/spacing.dart';
 import '../common/theme/theme_controller.dart';
@@ -13,6 +14,9 @@ class JinzhiApp extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
+    // Keep the app-wide foreground refresh coordinator alive. Features opt in
+    // by registering only while their screen is visible.
+    ref.watch(refreshCoordinatorProvider);
     final router = ref.watch(routerProvider);
     final mode = ref.watch(themeModeControllerProvider);
     // DM Sans 作主字体（拉丁/数字），中文走系统级联（iOS 苹方 / Android 厂商