Function is_managed_by_kopiur 

pub fn is_managed_by_kopiur(pod: &Pod) -> bool

Whether a pod is a kopiur-managed object (carries app.kubernetes.io/managed-by=kopiur). A mover Job’s pod mounts the source PVC too, so consumer-discovery and compatibility reasoning must exclude these — otherwise the mover would be compared against (or inherit from) itself. The single definition, shared by the controller and webhook.