feat(currency): update currency display to toman in admin panel; implement conversion functions for rial to toman and vice versa

assets/admin/components/FreeVisitPrice.tsx

@@ -2,7 +2,7 @@ import { useEffect, useState } from 'react';
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { toast } from 'sonner';
 import { api } from '../lib/api';
-import { formatRial } from '../lib/utils';
+import { formatRial, rialToToman, tomanToRial } from '../lib/utils';
 
 interface Pricing { free_visit_price_rials: number }
 
@@ -17,11 +17,11 @@ export default function FreeVisitPrice() {
   const pricing = (data as any)?.data as Pricing | undefined;
 
   useEffect(() => {
-    if (pricing) setValue(String(pricing.free_visit_price_rials ?? 0));
+    if (pricing) setValue(String(rialToToman(pricing.free_visit_price_rials ?? 0)));
   }, [pricing]);
 
   const saveMut = useMutation({
-    mutationFn: () => api.put('/api/v1/insurance-pricing', { free_visit_price_rials: Number(value) || 0 }),
+    mutationFn: () => api.put('/api/v1/insurance-pricing', { free_visit_price_rials: tomanToRial(Number(value) || 0) }),
     onSuccess: () => {
       toast.success('قیمت ویزیت ذخیره شد');
       qc.invalidateQueries({ queryKey: ['insurance-pricing'] });
@@ -37,7 +37,7 @@ export default function FreeVisitPrice() {
       </p>
       <div style={{ display: 'flex', alignItems: 'flex-end', gap: 10 }}>
         <div style={{ display: 'flex', flexDirection: 'column', gap: 4 }}>
-          <label style={{ fontSize: 11.5, fontWeight: 600 }}>قیمت (ریال)</label>
+          <label style={{ fontSize: 11.5, fontWeight: 600 }}>قیمت (تومان)</label>
           <input
             type="number" min={0} dir="ltr" className="input" style={{ width: 200 }}
             value={value} onChange={(e) => setValue(e.target.value)}
@@ -47,7 +47,7 @@ export default function FreeVisitPrice() {
           {saveMut.isPending ? '...' : 'ذخیره'}
         </button>
         {value !== '' && (
-          <span style={{ fontSize: 12, color: 'var(--text-3)', marginBottom: 8 }}>{formatRial(Number(value) || 0)}</span>
+          <span style={{ fontSize: 12, color: 'var(--text-3)', marginBottom: 8 }}>{formatRial(tomanToRial(Number(value) || 0))}</span>
         )}
       </div>
     </div>