Automate RC8 release journeys

frontend/vite.config.ts

@@ -1,4 +1,4 @@
-import { defineConfig } from 'vite'
+import { defineConfig } from 'vitest/config'
 import react from '@vitejs/plugin-react'
 
 declare const process: { env: Record<string, string | undefined> }
@@ -7,6 +7,12 @@ const apiProxyTarget = process.env.VITE_API_PROXY_TARGET ?? 'http://localhost:80
 
 export default defineConfig({
   plugins: [react()],
+  test: {
+    environment: 'jsdom',
+    include: ['src/**/*.test.{ts,tsx}'],
+    clearMocks: true,
+    restoreMocks: true,
+  },
   build: {
     chunkSizeWarningLimit: 900,
     rollupOptions: {