feat: handle new Shahkar identity verification step during purchase

When the backend responds with requires_shahkar_verification (for
purchases between the 100M and 200M thresholds), show an inline
national-code input instead of failing outright, and resubmit the
buy request with nationalCode once the user fills it in.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/pages/shop/section/productList/components/ModalBuy.tsx

@@ -45,6 +45,8 @@ const ModalBuy = ({ isOpen, setIsOpen, configId }: ModalBuyProps) => {
   });
   const [price, setPrice] = useState(0);
   const [isInfoOpen, setIsInfoOpen] = useState(false);
+  const [needsShahkarVerification, setNeedsShahkarVerification] = useState(false);
+  const [nationalCode, setNationalCode] = useState("");
   const payablePrice = toNumber(
     price === 0 ? data?.data?.result?.price || 0 : price
   );
@@ -99,6 +101,8 @@ const ModalBuy = ({ isOpen, setIsOpen, configId }: ModalBuyProps) => {
      setFieldValue("count", 1);
      setFieldValue("discount", "");
      setPrice(0);
+     setNeedsShahkarVerification(false);
+     setNationalCode("");
    }
  }, [isOpen, setFieldValue]);
   const mutation = useMutation({
@@ -190,10 +194,23 @@ const ModalBuy = ({ isOpen, setIsOpen, configId }: ModalBuyProps) => {
      return;
    }
 
-   console.log(formik.values);
+   if (needsShahkarVerification && nationalCode.trim().length !== 10) {
-    toast.promise(mutation.mutateAsync({ ...formik.values, status: "buy" }), {
+     toast.error("لطفا کد ملی ۱۰ رقمی را به‌درستی وارد کنید");
-      loading: "درحال انتقال به درگاه پرداخت...",
+     return;
+   }
+
+   const payload = {
+     ...formik.values,
+     status: "buy",
+     ...(needsShahkarVerification ? { nationalCode: nationalCode.trim() } : {}),
+   };
+
+    toast.promise(mutation.mutateAsync(payload), {
+      loading: needsShahkarVerification
+        ? "درحال احراز هویت شاهکار..."
+        : "درحال انتقال به درگاه پرداخت...",
       success: (res: AxiosResponse) => {
+        setNeedsShahkarVerification(false);
         window.location.href = res?.data?.result?.payment?.action;
         return `${res.data.alert}`;
       },
@@ -227,7 +244,17 @@ const ModalBuy = ({ isOpen, setIsOpen, configId }: ModalBuyProps) => {
          (err.response?.status === 422 &&
            errorMessage.includes("احراز هویت پیشرفته"));
 
-       if (isAdvancedVerificationError) {
+       const requiresShahkarVerificationFromApi =
+         isResponseObject &&
+         "requires_shahkar_verification" in responseData &&
+         Boolean(
+           (responseData as { requires_shahkar_verification?: boolean })
+             .requires_shahkar_verification
+         );
+
+       if (requiresShahkarVerificationFromApi) {
+         setNeedsShahkarVerification(true);
+       } else if (isAdvancedVerificationError) {
          goToAdvancedVerification();
        }
 
@@ -331,6 +358,24 @@ const ModalBuy = ({ isOpen, setIsOpen, configId }: ModalBuyProps) => {
                   {advancedVerificationMessage}
                 </Alert>
               )}
+            {needsShahkarVerification && (
+              <div className="w-full flex flex-col gap-2">
+                <Alert type="warning" extra="!mb-0 text-start">
+                  برای خریدهای با مبلغ بالا، احراز هویت شاهکار (تطبیق شماره
+                  موبایل حساب شما با کد ملی) الزامی است. لطفا کد ملی خود را
+                  وارد کنید.
+                </Alert>
+                <Input
+                  type="text"
+                  extra="max-md:!p-1 md:!p-2"
+                  placeholder="کد ملی"
+                  value={nationalCode}
+                  onChange={(e) =>
+                    setNationalCode(e.target.value.replace(/[^0-9]/g, ""))
+                  }
+                />
+              </div>
+            )}
             {data?.data?.result?.max_config === 0 ? (
               <>
                 <Alert type="info" extra="mt-5">