fix: 统一管理后台 401 与加载失败处理

web/src/main.ts

@@ -2,8 +2,22 @@ import { createApp } from "vue";
 import { createPinia } from "pinia";
 import App from "./App.vue";
 import { router } from "./router";
+import { setUnauthorizedHandler } from "./api/http";
+import { useAuthStore } from "./stores/auth";
 
 const app = createApp(App);
-app.use(createPinia());
+const pinia = createPinia();
+app.use(pinia);
 app.use(router);
+
+setUnauthorizedHandler((redirect) => {
+  const auth = useAuthStore();
+  auth.clearSession();
+  if (router.currentRoute.value.meta.public) {
+    return;
+  }
+  const target = redirect.startsWith("/login") ? "/overview" : redirect || "/overview";
+  void router.replace({ name: "login", query: { redirect: target } });
+});
+
 app.mount("#app");