Remove a bunch of boilerplate and add config.

ui/vite.config.ts

@@ -3,12 +3,14 @@ import { fileURLToPath, URL } from 'node:url'
 import { defineConfig } from 'vite'
 import vue from '@vitejs/plugin-vue'
 import vueDevTools from 'vite-plugin-vue-devtools'
+import tailwindcss from '@tailwindcss/vite'
 
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [
     vue(),
     vueDevTools(),
+    tailwindcss(),
   ],
   resolve: {
     alias: {