为项目添加状态管理

src/main.js

@@ -1,9 +1,12 @@
 import { createSSRApp } from 'vue'
+import { createPinia } from 'pinia'
 import App from './App.vue'
 
 export function createApp() {
   const app = createSSRApp(App)
+  const pinia = createPinia()
+  app.use(pinia)
   return {
-    app,
+    app
   }
 }