Remove process creation time and pid_exists from the slash worker parent-death predicate. The worker remains attached while its original PPID matches and keeps the existing in-flight grace behavior.\n\nRefs #62505
Daemon thread polls _is_orphaned (original ppid check + psutil create_time PID-reuse
guard, no PR_SET_PDEATHSIG). On orphan, drains an in-flight command up to a grace
window then os._exit(0). Started before the HermesCLI build to cover the spawn window.
Task: swl-qrf.8