watchdog.sh checks three vital signs every 5 minutes (systemd timer): process tree alive, motion in a center crop of the virtual screen, sound on the null sink — and restarts the wgtv unit on repeated failures, since ffmpeg happily keeps transmitting a wedged page. set-privacy flips a broadcast's privacyStatus via read-modify-write on the video status. Claude-Session: https://claude.ai/code/session_01EaVptJ3ZhyeQ9ZZZNcp55T