supervisor_machines

https://github.com/seuros/supervisor_machines

A supervision tree that restarts what died the way OTP would: one_for_one, one_for_all or rest_for_one, bounded by a restart intensity that escalates instead of thrashing. The decisions come from the no_std supervisor-machines crate; Ruby owns the threads, the restart backoff comes from chrono_machines and the shutdown budget from deadline_machines.