fix: pass amount to ZarinPal VerifyPaymentAsync — fix verify failure (amount=0 bug)

- PackageService.CustomerVerifyPackagePurchase: look up PaymentTransaction.Amount and pass to 3-arg overload
- TransactionsService.CustomerPaymentVerification: same fix
- VerifyDiscountWalletChargeCommandHandler: look up amount from PaymentTransaction
- VerifyPackagePurchaseCommandHandler: fix copy-paste bug (Authority as verificationToken) + add amount
- IPaymentGatewayService: throw NotImplementedException in default 3-arg impl to prevent silent amount=0
- MockPaymentGatewayService & DayaPaymentService: add 3-arg overload for compatibility

Root cause: ZarinPal requires the exact amount in verify request.
The 2-arg overload was sending amount=0 which caused Code=-1 (تأیید تراکنش ناموفق).

src/CMSMicroservice.Infrastructure/Services/Payment/DayaPaymentService.cs

@@ -193,6 +193,16 @@ public class DayaPaymentService : IPaymentGatewayService
         }
     }
 
+    public Task<PaymentVerificationResult> VerifyPaymentAsync(
+        string refId,
+        string verificationToken,
+        decimal amountInToman,
+        CancellationToken cancellationToken = default)
+    {
+        // دایا: درگاه دایا مبلغ را در verify نیاز ندارد — از overload بدون مبلغ استفاده می‌شود
+        return VerifyPaymentAsync(refId, verificationToken, cancellationToken);
+    }
+
     public async Task<PayoutResult> ProcessPayoutAsync(
         PayoutRequest request, 
         CancellationToken cancellationToken = default)

src/CMSMicroservice.Infrastructure/Services/Payment/MockPaymentGatewayService.cs

@@ -74,6 +74,16 @@ public class MockPaymentGatewayService : IPaymentGatewayService
         };
     }
 
+    public Task<PaymentVerificationResult> VerifyPaymentAsync(
+        string refId,
+        string verificationToken,
+        decimal amountInToman,
+        CancellationToken cancellationToken = default)
+    {
+        // Mock: مبلغ تفاوتی نمی‌کند، از همان overload بدون مبلغ استفاده می‌شود
+        return VerifyPaymentAsync(refId, verificationToken, cancellationToken);
+    }
+
     public async Task<PayoutResult> ProcessPayoutAsync(
         PayoutRequest request, 
         CancellationToken cancellationToken = default)