feat: 更新超级管理员登录逻辑，添加路由守卫和用户统计功能

frontend/superadmin/src/router/index.js

@@ -1,5 +1,6 @@
 import AppLayout from '@/layout/AppLayout.vue';
 import { createRouter, createWebHistory } from 'vue-router';
+import { clearSuperAuthToken, hasSuperAuthToken, refreshSuperToken } from '@/service/auth';
 
 const router = createRouter({
     history: createWebHistory('/super/'),
@@ -7,6 +8,7 @@ const router = createRouter({
         {
             path: '/',
             component: AppLayout,
+            meta: { requiresAuth: true },
             children: [
                 {
                     path: '/',
@@ -153,4 +155,34 @@ const router = createRouter({
     ]
 });
 
+let tokenValidated = false;
+let tokenValidationPromise = null;
+
+router.beforeEach(async (to) => {
+    if (to.meta?.requiresAuth !== true) return true;
+
+    const isAuthed = hasSuperAuthToken();
+    if (!isAuthed) {
+        return {
+            name: 'login',
+            query: { redirect: to.fullPath }
+        };
+    }
+
+    if (!tokenValidated) {
+        tokenValidationPromise ??= refreshSuperToken();
+        try {
+            await tokenValidationPromise;
+            tokenValidated = true;
+        } catch {
+            clearSuperAuthToken();
+            tokenValidated = false;
+            tokenValidationPromise = null;
+            return { name: 'login', query: { redirect: to.fullPath } };
+        }
+    }
+
+    return true;
+});
+
 export default router;