Add PWA screenshots and window controls overlay

- Add screenshots to manifest (desktop, tablet, mobile)
- Enable window-controls-overlay for Windows compact mode
- Fix deprecated apple-mobile-web-app-capable warning
- Add mobile-web-app-capable meta tag

nuxt4/app/app.vue

@@ -60,6 +60,7 @@ useHead({
   ],
   meta: [
     { name: 'theme-color', content: '#00DC82' },
+    { name: 'mobile-web-app-capable', content: 'yes' },
     { name: 'apple-mobile-web-app-capable', content: 'yes' },
     { name: 'apple-mobile-web-app-status-bar-style', content: 'default' }
   ]