Require review before Tahesab wallet sync and harden accounting admin UX.

Single-customer and row sync preview balances with documents before overwrite/keep; bulk sync keeps confirm. Also ship Zarin wallet sync actions, field help, and get_user cache improvements.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/pages/menuPages/customers/online/index.vue

@@ -3,7 +3,10 @@
     <div class="online-page__hero shrink-0 mb-4">
       <div class="flex flex-wrap items-center justify-between gap-3">
         <div>
-          <h2 class="online-page__title m-0">کاربران آنلاین</h2>
+          <h2 class="online-page__title m-0 inline-flex items-center gap-1.5">
+            کاربران آنلاین
+            <AdminFieldHelp :text="customersOnlinePageIntro" size="sm" />
+          </h2>
         </div>
         <div class="flex items-center gap-2">
           <div class="online-page__count">
@@ -297,6 +300,8 @@ import { toJalali, toJalaliNoTime } from '@core/utils/useDataTime'
 import Icon from '@core/components/BaseIcon/src/Icon.vue'
 import BasicActionSheet from '@/components/BasicActionSheet.vue'
 import { isMobile } from '@core/utils/is'
+import AdminFieldHelp from '@/components/AdminFieldHelp.vue'
+import { customersOnlinePageIntro } from '@/utils/adminHelpCopy'
 import { MODAL_ABOVE_ACTION_SHEET_Z_INDEX } from '@/constants/overlayZIndex'
 import { inputLenRules, inputRules } from '@/utils/inputRules'
 import CustomerMobileDetailSheet from '@/pages/menuPages/customers/base/components/CustomerMobileDetailSheet.vue'