A report the store cannot take yet is handed back to the broker, not acknowledged and lost (novox/hq issue 082)

internal/link/enrolment.go

@@ -144,7 +144,14 @@ var ErrNoBrokerManagement = errors.New("no broker management configured")
 // A node states; the owning context writes (novox/hq ADR 0006). What a node says it applied is
 // its own account of its own machine, kept as a copy for recovery — so this writes it down and
 // decides nothing from it.
-func (e Enrolment) Heard(ctx context.Context, report Report) error {
+func (e Enrolment) Heard(ctx context.Context, report Report) (err error) {
+	// A store that could not be asked right now is said as such, so the report is kept for
+	// another attempt rather than acknowledged and lost (novox/hq issue 082).
+	defer func() {
+		if inventory.Unreachable(err) {
+			err = fmt.Errorf("%w: %w", ErrTryAgain, err)
+		}
+	}()
 	if report.Node == "" {
 		return errors.New("a report named no node")
 	}