Refactor InsertEndpointAuthProcedure handling

Move insert logic from InsertEndpointAuthProcedure to a new InsertEndpointAuthProcedureHandler using MediatR. Remove ToObjectProcedure method and update usings. The record now serves as a pure data structure.

src/ReC.Application/EndpointAuth/Commands/InsertEndpointAuthProcedure.cs

@@ -1,4 +1,5 @@
-using ReC.Application.Common.Procedures.InsertProcedure;
+using MediatR;
+using ReC.Application.Common.Procedures.InsertProcedure;
 
 namespace ReC.Application.EndpointAuth.Commands;
 
@@ -15,13 +16,16 @@ public record InsertEndpointAuthProcedure : IInsertProcedure
     public string? Password { get; set; }
     public string? Domain { get; set; }
     public string? Workstation { get; set; }
+}
 
-    public InsertObjectProcedure ToObjectProcedure(string? addedWho = null)
+public class InsertEndpointAuthProcedureHandler(ISender sender) : IRequestHandler<InsertEndpointAuthProcedure, long>
+{
+    public async Task<long> Handle(InsertEndpointAuthProcedure request, CancellationToken cancel)
     {
-        return new InsertObjectProcedure
+        return await sender.Send(new InsertObjectProcedure
         {
             Entity = "ENDPOINT_AUTH",
-            EndpointAuth = this
-        }.AddedBy(addedWho);
+            EndpointAuth = request
+        }, cancel);
     }
 }