Fix PWA installation support

public/manifest.webmanifest

@@ -8,5 +8,9 @@
   "display": "standalone",
   "background_color": "#eef4ff",
   "theme_color": "#1d4ed8",
-  "icons": [{ "src": "/favicon.svg", "sizes": "any", "type": "image/svg+xml", "purpose": "any maskable" }]
+  "icons": [
+    { "src": "/icon-192.png", "sizes": "192x192", "type": "image/png", "purpose": "any maskable" },
+    { "src": "/icon-512.png", "sizes": "512x512", "type": "image/png", "purpose": "any maskable" },
+    { "src": "/favicon.svg", "sizes": "any", "type": "image/svg+xml", "purpose": "any" }
+  ]
 }