etcdctl lease keep-alive has no way to renew just once and exit

etcdctl lease keep-alive has no way to renew just once and exit: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). Right now etcdctl lease keep-alive <leaseID keeps the stream open and keeps refreshing the lease until I kill it. That's fine for long-running…