debug: add notification debug component to troubleshoot iOS

app/layout.tsx

@@ -3,6 +3,7 @@ import './globals.css'
 import ServiceWorkerRegistration from '@/components/ServiceWorkerRegistration'
 import OfflineIndicator from '@/components/OfflineIndicator'
 import NotificationPrompt from '@/components/NotificationPrompt'
+import NotificationDebug from '@/components/NotificationDebug'
 import { ToastProvider } from '@/components/ToastContainer'
 import ErrorBoundary from '@/components/ErrorBoundary'
 
@@ -77,6 +78,7 @@ export default function RootLayout({
             <ServiceWorkerRegistration />
             <OfflineIndicator />
             <NotificationPrompt />
+            <NotificationDebug />
             {children}
           </ToastProvider>
         </ErrorBoundary>