fix frontend phase0 bugs

frontend/src/stores/user.ts

@@ -12,7 +12,8 @@ export const useUserStore = defineStore('user', () => {
   const token = ref<string | null>(localStorage.getItem('access_token'))
   const refreshToken = ref<string | null>(localStorage.getItem('refresh_token'))
   const user = ref<UserInfo | null>(null)
-  const _remember = ref(true)
+  // 默认不持久化；从 localStorage 推断：有 token 说明上次选了"记住我"
+  const _remember = ref(!!localStorage.getItem('access_token'))
 
   // 基本 JWT 格式校验（三段式），防止垃圾值绕过路由守卫
   const isLoggedIn = computed(() => {
@@ -30,7 +31,7 @@ export const useUserStore = defineStore('user', () => {
       localStorage.setItem('access_token', accessToken)
       localStorage.setItem('refresh_token', newRefreshToken)
     } else {
-      // 不记住：清除持久化，token 仅存于内存，关闭标签页即失效
+      // 不记住：清除全部持久化数据，token 仅存于内存，关闭标签页即失效
       localStorage.removeItem('access_token')
       localStorage.removeItem('refresh_token')
       localStorage.removeItem('user')
@@ -54,6 +55,7 @@ export const useUserStore = defineStore('user', () => {
     token.value = null
     refreshToken.value = null
     user.value = null
+    _remember.value = false
     localStorage.removeItem('access_token')
     localStorage.removeItem('refresh_token')
     localStorage.removeItem('user')