Some echo tests added.

internal/app/runtime_commands.go

@@ -271,7 +271,12 @@ func (worker commandRuntime) run(ctx context.Context) error {
 					}
 				}
 			default:
-				if target, level, backwards := documentReviewCommand(command); target != 0 {
+				if _, _, ok := input.MessageCommandIndex(command); ok {
+					select {
+					case reviewRequests <- command:
+					default:
+					}
+				} else if target, level, backwards := documentReviewCommand(command); target != 0 {
 					if err := objectReview.MoveDocument(target, level, backwards); err != nil {
 						logger.Warn("queue document navigation", "error", err)
 					}