Complete FrontOffice BFF to CMS Migration

- Migrated all 9 services from FrontOffice.BFF to CMS architecture
- Enhanced user.proto with 7 additional Customer API endpoints:
  * UpdateCustomerProfile, GetCustomerProfile
  * ChangeCustomerPassword with validation
  * GetCustomerReferrals with commission stats
  * UploadCustomerAvatar with file validation
  * GetCustomerSettings, UpdateCustomerSettings
- All services now support Customer endpoints with /Customer/ prefix
- Mock implementations with realistic Persian data
- Fixed namespace conflicts and compilation issues
- Comprehensive testing completed for all endpoints
- Services migrated: Categories, City, UserCarts, Products, UserWallet,
  Transaction, UserOrder, Package, User (enhanced)

src/CMSMicroservice.Domain/Entities/OtpToken.cs

@@ -6,6 +6,8 @@ public class OtpToken : BaseAuditableEntity
     public string Mobile { get; set; }
     //مقصود
     public string Purpose { get; set; }
+    //کد 
+    public string Code { get; set; }
     //کد هش شده
     public string CodeHash { get; set; }
     //زمان انقضا
@@ -14,4 +16,16 @@ public class OtpToken : BaseAuditableEntity
     public int Attempts { get; set; }
     //موفق بود؟
     public bool IsUsed { get; set; }
+
+    /// <summary>
+    /// Validates if the provided code is correct and token is not expired
+    /// </summary>
+    public bool IsValid(string providedCode)
+    {
+        if (IsUsed || DateTime.UtcNow > ExpiresAt)
+            return false;
+
+        // Use BCrypt to verify the provided code against the stored hash
+        return BCrypt.Net.BCrypt.Verify(providedCode, CodeHash);
+    }
 }