Task 96ab3c0b: PWA manifest and service worker (#189)

admin/vite.config.ts

@@ -1,9 +1,10 @@
 import { defineConfig } from "vitest/config";
 import react from "@vitejs/plugin-react";
+import { serviceWorkerInjectPlugin } from "./vite-sw-plugin";
 
 export default defineConfig({
-  plugins: [react()],
+  plugins: [react(), serviceWorkerInjectPlugin()],
   test: {
     environment: "jsdom",
   },
-});
+});