Update MappingProfile for improved DocumentStatus mapping

Enhanced mapping logic in MappingProfile:
- Set Status to Created or Signed in CreateDocStatusCommand mapping based on Value property.
- Automatically set StatusChangedWhen to current UTC time in UpdateDocStatusCommand mapping.

EnvelopeGenerator.Application/DocStatus/MappingProfile.cs

@@ -18,11 +18,16 @@ public class MappingProfile : Profile
         CreateMap<CreateDocStatusCommand, DocumentStatus>()
         .ForMember(dest => dest.Envelope, opt => opt.Ignore())
         .ForMember(dest => dest.Receiver, opt => opt.Ignore())
+        .ForMember(dest => dest.Status, opt => opt.MapFrom(
+            src => src.Value == null 
+                ? Domain.Constants.DocumentStatus.Created 
+                : Domain.Constants.DocumentStatus.Signed))
         .MapAddedWhen();
 
         CreateMap<UpdateDocStatusCommand, DocumentStatus>()
         .ForMember(dest => dest.Envelope, opt => opt.Ignore())
         .ForMember(dest => dest.Receiver, opt => opt.Ignore())
+        .ForMember(dest => dest.StatusChangedWhen, opt => opt.MapFrom(src => DateTime.UtcNow))
         .MapChangedWhen();
     }
 }