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

assets/admin/components/ServiceTariffModal.tsx

@@ -3,7 +3,7 @@ import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { PencilIcon, CheckIcon, XMarkIcon } from '@heroicons/react/24/outline';
 import { toast } from 'sonner';
 import { api } from '../lib/api';
-import { formatRial, formatNumber } from '../lib/utils';
+import { formatRial, formatNumber, rialToToman, tomanToRial } from '../lib/utils';
 import Modal from './ui/Modal';
 import PriceInput from './ui/PriceInput';
 import SearchableSelect from './ui/SearchableSelect';
@@ -52,7 +52,7 @@ export default function ServiceTariffModal({ item, onClose }: { item: ServiceIte
   }, [currentYear, tariffs]);
 
   const addMut = useMutation({
-    mutationFn: () => api.put(`/api/v1/service-items/${item!.uuid}/tariffs/${Number(year)}`, { price_rials: price }),
+    mutationFn: () => api.put(`/api/v1/service-items/${item!.uuid}/tariffs/${Number(year)}`, { price_rials: tomanToRial(price) }),
     onSuccess: () => {
       toast.success('تعرفه ذخیره شد');
       setYear('');
@@ -65,7 +65,7 @@ export default function ServiceTariffModal({ item, onClose }: { item: ServiceIte
 
   const editMut = useMutation({
     mutationFn: (vars: { year: number; price: number }) =>
-      api.put(`/api/v1/service-items/${item!.uuid}/tariffs/${vars.year}`, { price_rials: vars.price }),
+      api.put(`/api/v1/service-items/${item!.uuid}/tariffs/${vars.year}`, { price_rials: tomanToRial(vars.price) }),
     onSuccess: () => {
       toast.success('تعرفه ویرایش شد');
       setEditYear(null);
@@ -75,7 +75,7 @@ export default function ServiceTariffModal({ item, onClose }: { item: ServiceIte
     onError: (e: Error) => toast.error(e.message),
   });
 
-  const startEdit = (t: TariffRow) => { setEditYear(t.year); setEditPrice(t.price_rials); };
+  const startEdit = (t: TariffRow) => { setEditYear(t.year); setEditPrice(rialToToman(t.price_rials)); };
 
   return (
     <Modal open={!!item} onClose={onClose} title={`تعرفه‌های سالانه — ${item?.name ?? ''}`} size="md">
@@ -105,7 +105,7 @@ export default function ServiceTariffModal({ item, onClose }: { item: ServiceIte
               />
             </div>
             <div style={{ minWidth: 0 }}>
-              <label className="field-label">تعرفه (ریال)</label>
+              <label className="field-label">تعرفه (تومان)</label>
               <PriceInput className="input" style={{ height: 40 }} value={price} onChange={setPrice} placeholder="مبلغ" min={0} />
             </div>
             <button className="btn primary" style={{ height: 40 }} disabled={year === '' || addMut.isPending} onClick={() => addMut.mutate()}>