feat: deregister worker on close

internal/workprocessor/workprocessor.go

@@ -40,6 +40,8 @@ func (w *WorkProcessor) ProcessNext(ctx context.Context, workerID uuid.UUID) err
 		return fmt.Errorf("failed to start processing items: %w", err)
 	}
 
+	time.Sleep(10 * time.Second)
+
 	if err := w.workscheduler.Archive(ctx, *schedule); err != nil {
 		return fmt.Errorf("failed to archive item: %w", err)
 	}