style: 优化vip到期时间展示

Yi.Ai.Vue3/src/components/userPersonalCenter/components/UserManagement.vue

@@ -54,7 +54,7 @@ const vipRemainingDays = computed(() => {
 // VIP到期状态文本
 const vipExpireStatusText = computed(() => {
   if (!userVipStatus.value) return '';
-  if (!vipExpireTime.value) return '永久VIP';
+  if (!vipExpireTime.value) return '-';
   if (vipRemainingDays.value === null) return '';
   if (vipRemainingDays.value < 0) return '已过期';
   if (vipRemainingDays.value === 0) return '今日到期';
@@ -202,7 +202,7 @@ function bindWechat() {
                   {{ formatDate(vipExpireTime)?.split(' ')[0] || '-' }}
                 </template>
                 <template v-else>
-                  永久
+                  -
                 </template>
               </div>
               <div class="stat-label">