namespace KArtSell.Modules.__MODULE__.Features.__FEATURE__;
public interface IHandler { Task<Response> HandleAsync(Request request, CancellationToken ct); }
public sealed class Handler : IHandler
{
    public Task<Response> HandleAsync(Request request, CancellationToken ct)
        => throw new NotImplementedException("Load approved server-side PIT context, execute a pure policy, persist decision and Outbox in one transaction.");
}