Import assets and add PWA.

vite.config.ts

@@ -1,10 +1,38 @@
 import { resolve } from 'path'
 import { defineConfig } from 'vite'
 import preact from '@preact/preset-vite'
+import { VitePWA } from 'vite-plugin-pwa'
 
 // https://vitejs.dev/config/
 export default defineConfig({
-  plugins: [preact()],
+  plugins: [
+    preact(),
+    VitePWA({
+      manifest: {
+        name: "Revolt",
+        short_name: "Revolt",
+        description: "User-first, privacy-focused chat platform.",
+        categories: ["messaging"],
+        start_url: "/",
+        display: "standalone",
+        orientation: "portrait",
+        background_color: "#101823",
+        icons: [
+            {
+                "src": "/assets/icons/android-chrome-192x192.png",
+                "type": "image/png",
+                "sizes": "192x192"
+            },
+            {
+                "src": "/assets/icons/android-chrome-512x512.png",
+                "type": "image/png",
+                "sizes": "512x512"
+            }
+        ]
+      },
+      workbox: { }
+    })
+  ],
   build: {
     rollupOptions: {
       input: {