修改文件结构

front-end/main-app/src/app/main.ts

@@ -0,0 +1,13 @@
+// import './assets/main.css'
+
+import { createApp } from 'vue'
+import { createPinia } from 'pinia'
+
+import App from './App'
+import router from './router'
+
+createApp(App)
+    .use(createPinia())
+    .use(router)
+    .mount('#app')
+