chore: remove NotificationDebug component

Debug complete - notifications are working (permission already granted).
Remove debug component to clean up UI.

app/layout.tsx

@@ -3,7 +3,6 @@ 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'
 
@@ -78,7 +77,6 @@ export default function RootLayout({
             <ServiceWorkerRegistration />
             <OfflineIndicator />
             <NotificationPrompt />
-            <NotificationDebug />
             {children}
           </ToastProvider>
         </ErrorBoundary>