Fix check_permissions to check group bits; fix ssh-keyscan dedup to iterate per key type; fix HUB_USER@HUB_HOST sed regex to handle trailing whitespace
hub/offboard-spoke.sh
Drop root requirement; fix crontab running as root; fix registry .tmp not cleaned on failure
hub/onboard-spoke.sh
Fix registry .tmp not cleaned on failure; chmod 600 key immediately after generation
hub/setup-hub.sh
Check permissions on existing SSH private keys in setup
