fix(ops): 修复 setInterval 在 keepAlive 下未清除导致内存泄漏

页面使用 keepAlive 缓存后 onUnmounted 不触发，setInterval 持续运行，
长时间放置导致 OOM 崩溃。统一使用 onActivated/onDeactivated 管理轮询生命周期。

涉及页面：工单统计栏、工单看板、工单详情、客流统计、工作台、全局布局通知轮询

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web-antd/src/layouts/basic.vue

@@ -3,7 +3,7 @@ import type { NotificationItem } from '@vben/layouts';
 
 import type { SystemTenantApi } from '#/api/system/tenant';
 
-import { computed, onMounted, ref, watch } from 'vue';
+import { computed, onMounted, onUnmounted, ref, watch } from 'vue';
 
 import { useAccess } from '@vben/access';
 import { AuthenticationLoginExpiredModal, useVbenModal } from '@vben/common-ui';
@@ -185,13 +185,15 @@ async function handleTenantChange(tenant: SystemTenantApi.Tenant) {
 }
 
 // ========== 初始化 ==========
+let notifyTimer: null | ReturnType<typeof setInterval> = null;
+
 onMounted(() => {
   // 首次加载未读数量
   handleNotificationGetUnreadCount();
   // 获取租户列表
   handleGetTenantList();
   // 轮询刷新未读数量
-  setInterval(
+  notifyTimer = setInterval(
     () => {
       if (userStore.userInfo) {
         handleNotificationGetUnreadCount();
@@ -201,6 +203,13 @@ onMounted(() => {
   );
 });
 
+onUnmounted(() => {
+  if (notifyTimer) {
+    clearInterval(notifyTimer);
+    notifyTimer = null;
+  }
+});
+
 watch(
   () => ({
     enable: preferences.app.watermark,