fixup: respond to review feedback #3

tests/fixture/testnet/local/node.go

@@ -322,6 +322,10 @@ func (n *LocalNode) IsHealthy(ctx context.Context) (bool, error) {
 	return false, fmt.Errorf("failed to query node health: %w", err)
 }
 
+// WaitForHealthy blocks until IsHealthy returns true or an error
+// (including context timeout) is observed. The provided context
+// should have a timeout to ensure an error is eventually returned if
+// the node never becomes healthy.
 func (n *LocalNode) WaitForHealthy(ctx context.Context) error {
 	ticker := time.NewTicker(DefaultNodeTickerInterval)
 	defer ticker.Stop()