Refactor UpdateDocStatusCommand to use generic base class

Refactored UpdateDocStatusCommand to inherit from a generic UpdateCommand base class with a new DocStatusUpdateDto record. Added explicit EnvelopeId, ReceiverId, and Value properties. Removed ChangedWhen property and implemented BuildQueryExpression for querying. Updated using directives and improved XML documentation.

EnvelopeGenerator.Application/DocStatus/Commands/UpdateDocStatusCommand.cs

@@ -1,14 +1,41 @@
-using EnvelopeGenerator.Domain;
+using EnvelopeGenerator.Application.Common.Commands;
+using EnvelopeGenerator.Domain.Entities;
+using System.Linq.Expressions;
 
 namespace EnvelopeGenerator.Application.DocStatus.Commands;
 
 /// <summary>
 /// 
 /// </summary>
-public record UpdateDocStatusCommand : ModifyDocStatusCommandBase
+/// <param name="Value"></param>
+public record DocStatusUpdateDto(string? Value);
+
+/// <summary>
+/// 
+/// </summary>
+public record UpdateDocStatusCommand : UpdateCommand<DocStatusUpdateDto, DocumentStatus>
 {
     /// <summary>
-    /// Gets timestamp when this record was added. Returns the StatusChangedWhen value.
+    /// 
     /// </summary>
-    public DateTime? ChangedWhen => StatusChangedWhen;
+    public int EnvelopeId { get; set; }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    public int ReceiverId { get; set; }
+
+    /// <summary>
+    /// Gets or sets the display value associated with the status.
+    /// </summary>
+    public string? Value { get; set; }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <returns></returns>
+    public override Expression<Func<DocumentStatus, bool>> BuildQueryExpression()
+    {
+        return ds => ds.EnvelopeId == EnvelopeId && ds.ReceiverId == ReceiverId;
+    }
 }