fix: PaymentStatus→PaymentCompleted mapping in DiscountOrderService

- GetOrderById and GetUserOrders were using Mapster auto-mapping which
  could not map 'PaymentStatus' (enum: Success=0) to 'payment_completed' (bool)
- Replaced with manual mapping: PaymentStatus == Success → true
- Also maps DeliveryStatus and all other fields correctly
- Fixed FrontOfficeBaseUrl and CmsBaseUrl to use HTTP for local dev

src/CMSMicroservice.WebApi/appsettings.Development.json

@@ -4,8 +4,8 @@
     "MerchantId": "00000000-0000-0000-0000-000000000000",
     "UseSandbox": true
   },
-  "CmsBaseUrl": "https://localhost:32846",
-  "FrontOfficeBaseUrl": "https://localhost:5268",
+  "CmsBaseUrl": "http://localhost:32847",
+  "FrontOfficeBaseUrl": "http://localhost:5268",
   "JwtSecurityKey": "TvlZVx5TJaHs8e9HgUdGzhGP2CIidoI444nAj+8+g7c=",
   "JwtIssuer": "https://localhost",
   "JwtAudience": "https://localhost",