fix: auto logout when cookie expires (user_id becomes Guest)

apps/jingrow/frontend/src/shared/stores/auth.ts

@@ -1,6 +1,6 @@
 import { defineStore } from 'pinia'
 import { ref, computed } from 'vue'
-import { loginApi, getUserInfoApi, logoutApi, getSessionUser, isCookieExpired } from '../api/auth'
+import { loginApi, getUserInfoApi, logoutApi, isCookieExpired } from '../api/auth'
 
 export interface User {
   id: string
@@ -59,6 +59,17 @@ export const useAuthStore = defineStore('auth', () => {
   }
 
   const initAuth = async () => {
+    // 检查user_id是否为Guest（cookie过期时后端会设置为Guest）
+    const cookies = new URLSearchParams(document.cookie.split('; ').join('&'))
+    const userId = cookies.get('user_id')
+    if (userId === 'Guest') {
+      // user_id是Guest，说明cookie已过期，清除本地状态
+      if (isAuthenticated.value) {
+        await logout()
+      }
+      return
+    }
+
     // 首先检查session cookie是否存在
     if (!isCookieExpired()) {
       try {