Add XML documentation for DeleteOutResCommand and handler

Enhanced the `DeleteOutResCommand` and `DeleteOutResCommandHandler`
with detailed XML documentation comments. These comments describe
the purpose, usage, and deletion logic, including criteria based
on `ActionId` or `ProfileId`. Improved clarity for maintainers
and users of the codebase.

src/ReC.Application/OutResults/Commands/DeleteOutResCommand.cs

@@ -4,15 +4,41 @@ using ReC.Domain.Entities;
 
 namespace ReC.Application.OutResults.Commands;
 
+/// <summary>
+/// Represents the command to delete output results based on specified criteria.
+/// </summary>
+/// <remarks>
+/// Deletion can be performed by providing either an <see cref="ActionId"/> or a <see cref="ProfileId"/>.
+/// At least one of these properties must be set for the operation to proceed.
+/// </remarks>
 public record DeleteOutResCommand : IRequest
 {
+    /// <summary>
+    /// Gets the unique identifier for the action whose output results should be deleted.
+    /// </summary>
     public long? ActionId { get; init; }
 
+    /// <summary>
+    /// Gets the unique identifier for the profile whose associated action's output results should be deleted.
+    /// </summary>
     public long? ProfileId { get; init; }
 }
 
+/// <summary>
+/// Handles the execution of the <see cref="DeleteOutResCommand"/>.
+/// </summary>
 public class DeleteOutResCommandHandler(IRepository<OutRes> repo) : IRequestHandler<DeleteOutResCommand>
 {
+    /// <summary>
+    /// Processes the delete command by removing matching <see cref="OutRes"/> entities from the repository.
+    /// </summary>
+    /// <param name="request">The command containing the deletion criteria.</param>
+    /// <param name="cancel">A cancellation token that can be used to cancel the work.</param>
+    /// <returns>A task that represents the asynchronous delete operation.</returns>
+    /// <remarks>
+    /// The handler deletes records where <c>OutRes.ActionId</c> matches <see cref="DeleteOutResCommand.ActionId"/>
+    /// or where the associated <c>Action.ProfileId</c> matches <see cref="DeleteOutResCommand.ProfileId"/>.
+    /// </remarks>
     public Task Handle(DeleteOutResCommand request, CancellationToken cancel)
     {
         return repo.DeleteAsync(x => x.ActionId == request.ActionId || x.Action!.ProfileId == request.ProfileId, cancel);