re #1 - I know families in similar positions, and a secondary lock placed high up on the door has been a lifesaver (literally), and gives much-needed peace of mind.
Example: https://www.amazon.com/dp/B07DR9CMGZ
Example: https://www.amazon.com/dp/B07DR9CMGZ
Honestly, after the 3rd time of him trying to run and us stopping him due to the automations he stopped.