Function assess_restore_compat 

pub fn assess_restore_compat(
    mover: &MoverWriteIdentity,
    future: Option<&WorkloadIdentity>,
) -> RestoreWriteCompat

Assess whether the future consumer of a restore target can read what the mover writes. fsGroup IS a positive signal here (fresh read-write volume). future is None when no pod consumes the target yet (the common case → ConsumerAbsent).