feat(sms-wallet): add display for SMS price with Banknotes icon

assets/admin/pages/SmsWalletPage.tsx

@@ -7,6 +7,7 @@ import { toast } from 'sonner';
 import {
   ArrowUpCircleIcon, ArrowDownCircleIcon, DevicePhoneMobileIcon,
   ClockIcon, CheckCircleIcon, XCircleIcon, BellAlertIcon, ChatBubbleLeftEllipsisIcon,
+  BanknotesIcon,
 } from '@heroicons/react/24/outline';
 import { api } from '../lib/api';
 import type { ApiResponse, PaginatedResponse } from '../lib/api';
@@ -180,6 +181,15 @@ function SmsWalletPageInner() {
               <div style={{ fontSize: 12.5, color: 'var(--text-3)' }}>یادآوری قبل از نوبت</div>
             </div>
           </div>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 12 }}>
+            <div style={{ width: 40, height: 40, borderRadius: 10, background: 'var(--warning-bg)', display: 'grid', placeItems: 'center', flexShrink: 0 }}>
+              <BanknotesIcon style={{ width: 20, color: 'var(--warning)' }} />
+            </div>
+            <div>
+              <div style={{ fontSize: 22, fontWeight: 700 }}>{formatRial(balance?.sms_price_rials ?? 0)}</div>
+              <div style={{ fontSize: 12.5, color: 'var(--text-3)' }}>قیمت هر پیامک</div>
+            </div>
+          </div>
         </div>
 
         {/* وضعیت سرویس */}