Normalize zero outcomes and omitted diagnostic delivery state

execute.go

@@ -88,6 +88,14 @@ func (a *App) commandAt(path []string) (Command, bool) {
 }
 
 func (a *App) present(outcome Outcome, path []string, streams Streams) Outcome {
+	if outcome.Kind == "" && outcome.Status == 0 && outcome.Domain == "" &&
+		outcome.Cause == nil && outcome.DeliveryError == nil &&
+		!outcome.ReportIncomplete && len(outcome.Diagnostics) == 0 {
+		outcome.Kind = OutcomeSuccess
+	}
+	if outcome.DiagnosticDelivery == "" {
+		outcome.DiagnosticDelivery = DeliveryNone
+	}
 	streams = normalizeStreams(streams)
 	if outcome.DiagnosticDelivery == DeliveryComplete {
 		return outcome