fix: remove double ×10 Rial conversion in ZarinPalPaymentService

Root cause: FrontOffice already converts Toman→Rial (×10) before sending
to CMS. ZarinPalPaymentService was multiplying by 10 AGAIN, causing
amounts to be 10x too large.

Example: user enters 500K Toman → FO sends 5M Rial → CMS did ×10 → 50M
Rial sent to ZarinPal → showed 5M Toman instead of 500K.

Changes:
- ZarinPalPaymentService.InitiatePaymentAsync: remove ×10 (amount already Rial)
- ZarinPalPaymentService.VerifyPaymentWithAmountAsync: remove ×10 + accept Rial
- ZarinPalPaymentService.VerifyResult.Amount: return Rial (no /10 conversion)
- VerifyMagicWalletChargeCommandHandler: remove /10 before calling Verify
- PaymentCallbackController: update comments (amount is Rial)
- Also includes: improved HTTP error logging for non-200 responses
- Also includes: production URL fix (kbs1→kbs2)

k8s/production/cms-config.yaml

@@ -23,8 +23,8 @@ stringData:
         "MerchantId": "4225d555-5fa9-4df0-9b61-1ce152cbbba8",
         "UseSandbox": false
       },
-      "CmsBaseUrl": "https://cms.kbs1.ir",
-      "FrontOfficeBaseUrl": "https://kbs1.ir",
+      "CmsBaseUrl": "https://cms.kbs2.ir",
+      "FrontOfficeBaseUrl": "https://kbs2.ir",
       "ConnectionStrings": {
         "DefaultConnection": "Server=mssql-svc;Database=KBS;User Id=sa;Password=YourStrong@Passw0rd;TrustServerCertificate=True;"
       },