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/base/components/table.vue

@@ -1,6 +1,6 @@
 <template>
   <div class="h-full min-h-0 min-w-0 max-w-full overflow-hidden">
-    <BasicShowContext title="لیست مشتریان">
+    <BasicShowContext title="لیست مشتریان" :help="customersPageIntro">
       <template #extra>
         <BaseButton
           v-if="isMobile"
@@ -273,6 +273,7 @@ import {
   initWalletSettingsFromApi
 } from '@/utils/config'
 import { displayAccountingCode, isValidAccountingCode } from '@/utils/accountingCode'
+import { customersPageIntro } from '@/utils/adminHelpCopy'
 
 const [submit, reload] = useBaseTable()
 const emits = defineEmits(['delete', 'edit', 'add', 'info', 'chargeWallet'])