feat: install button

packages/website/package.json

@@ -11,6 +11,8 @@
   "dependencies": {
     "@astrojs/react": "^4.4.0",
     "@radix-ui/colors": "^3.0.0",
+    "@radix-ui/react-icons": "^1.3.2",
+    "@radix-ui/themes": "^3.2.1",
     "@react-three/fiber": "^9.3.0",
     "@types/react": "^19.1.14",
     "@types/react-dom": "^19.1.9",
@@ -18,6 +20,7 @@
     "astro": "^5.14.1",
     "astro-favicons": "^3.1.5",
     "fuzzysort": "^3.1.0",
+    "pwa-install-handler": "^2.6.3",
     "react": "^19.1.1",
     "react-dom": "^19.1.1"
   }