!70 czh-20260630-修复计划滚动条问题

* czh-20260630-修复计划滚动条问题
* czh-AI-20260630-新增功能-帮助中心菜单项
* czh-AI-20260630-新增功能-帮助中心常量导出
* czh-AI-20260630-新增功能-帮助中心环境变量配置
* czh-20260630-优化拖拽效果
* czh-20260630-增加乐观更新；优化抽屉界面

src/layouts/default/header/components/user-dropdown/index.vue

@@ -13,6 +13,7 @@
         <MenuItem itemKey="depart" :text="t('layout.header.dropdownItemSwitchDepart')" icon="ant-design:cluster-outlined" />
         <MenuItem itemKey="cache" :text="t('layout.header.dropdownItemRefreshCache')" icon="ion:sync-outline" />
         <MenuItem itemKey="contact" text="联系我们" icon="ant-design:phone-outlined" />
+        <MenuItem itemKey="helpCenter" text="帮助中心" icon="ant-design:question-circle-outlined" />
 
         <!-- <MenuItem
             v-if="getUseLockPage"
@@ -34,7 +35,7 @@
 
   import { defineComponent, computed, ref } from 'vue';
 
-  import { SITE_URL, CONTACT_URL } from '/@/settings/siteSetting';
+  import { SITE_URL, CONTACT_URL, HELP_CENTER_URL } from '/@/settings/siteSetting';
 
   import { useUserStore } from '/@/store/modules/user';
   import { useHeaderSetting } from '/@/hooks/setting/useHeaderSetting';
@@ -56,7 +57,7 @@ import deptLogo from '/@/assets/images/department-logo.png';
   // import { getFileAccessHttpUrl } from '/@/utils/common/compUtils';
   import { getRefPromise } from '/@/utils/index';
 
-  type MenuEvent = 'logout' | 'doc' | 'lock' | 'cache' | 'depart' | 'contact';
+  type MenuEvent = 'logout' | 'doc' | 'lock' | 'cache' | 'depart' | 'contact' | 'helpCenter';
   const { createMessage } = useMessage();
   export default defineComponent({
     name: 'UserDropdown',
@@ -122,6 +123,11 @@ import deptLogo from '/@/assets/images/department-logo.png';
         openWindow(CONTACT_URL);
       }
 
+      // open help center
+      function openHelpCenter() {
+        openWindow(HELP_CENTER_URL);
+      }
+
       // 清除缓存
       async function clearCache() {
         const result = await refreshCache();
@@ -169,6 +175,9 @@ import deptLogo from '/@/assets/images/department-logo.png';
           case 'contact':
             openContact();
             break;
+          case 'helpCenter':
+            openHelpCenter();
+            break;
           case 'depart':
             updateCurrentDepart();
             break;