fix: Toman/Rial — system uses Toman everywhere, only ZarinPal gets Rial

Core change in ZarinPalPaymentService:
- InitiatePaymentAsync: Amount (Toman) × 10 → Rial for gateway
- VerifyPaymentWithAmountAsync: Amount (Toman) × 10 → Rial for verify
- Verify result: gateway Rial ÷ 10 → Toman back to system

Also fixed:
- Package.Price doc: ریال → تومان
- Error messages in 3 handlers: ریال → تومان
- ConfigurationService descriptions: ریال → تومان (7 entries)
- Notification SMS/email: ریال → تومان
- Doc comments in 5 command files: ریال → تومان
- PaymentCallback comments: ریال → تومان

14 files changed across Domain, Application, Infrastructure, WebApi

src/CMSMicroservice.Domain/Entities/Package.cs

@@ -19,7 +19,7 @@ public class Package : BaseAuditableEntity, IHasHistory<History.PackageHistory>
     /// <summary>آدرس تصویر</summary>
     public string ImagePath { get; set; }
     
-    /// <summary>قیمت پکیج (ریال)</summary>
+    /// <summary>قیمت پکیج (تومان)</summary>
     public long Price { get; set; }
 
     // === فیلدهای جدید v3 ===