feat: 初始化 Vue 前端工程与 embed 占位

web/src/stores/app.ts

@@ -0,0 +1,7 @@
+import { defineStore } from "pinia";
+import { ref } from "vue";
+
+export const useAppStore = defineStore("app", () => {
+  const title = ref("NixMsg");
+  return { title };
+});