fix: review fixes - Math.round kopecks, fa locale, admin list commission

1. Add Math.round() to rubles→kopecks conversion (floating point safety)
2. Add missing {{currency}} template var in fa.json amountPlaceholder
3. Show desired_commission_percent in admin applications list

src/locales/fa.json

@@ -618,7 +618,7 @@
       "requestError": "ایجاد درخواست برداشت ناموفق بود. لطفاً دوباره تلاش کنید.",
       "fields": {
         "amount": "مبلغ",
-        "amountPlaceholder": "مبلغ را وارد کنید",
+        "amountPlaceholder": "مبلغ را به {{currency}} وارد کنید",
         "amountHint": "حداقل: {{min}} {{currency}}",
         "paymentDetails": "اطلاعات پرداخت",
         "paymentDetailsPlaceholder": "شماره کارت، آدرس کیف پول یا سایر اطلاعات پرداخت..."

src/pages/AdminPartners.tsx

@@ -242,6 +242,12 @@ export default function AdminPartners() {
                         {app.expected_monthly_referrals}
                       </div>
                     )}
+                    {app.desired_commission_percent != null && (
+                      <div>
+                        {t('admin.partners.applicationFields.desiredCommission')}:{' '}
+                        {app.desired_commission_percent}%
+                      </div>
+                    )}
                   </div>
 
                   {/* Actions */}

src/pages/ReferralWithdrawalRequest.tsx

@@ -42,7 +42,7 @@ export default function ReferralWithdrawalRequest() {
     if (form.payment_details.length < 5) return;
     if (form.amount_rubles <= 0) return;
     withdrawMutation.mutate({
-      amount_kopeks: form.amount_rubles * 100,
+      amount_kopeks: Math.round(form.amount_rubles * 100),
       payment_details: form.payment_details,
     });
   };