Replaces kiosk-firstboot.service (which got SIGHUP'd by getty) with a
simpler approach: configure getty@tty1 to auto-login root, run kiosk-setup
from .bash_profile. Cleaner TTY ownership — no service/getty conflicts.
install-kiosk.sh now removes the auto-login config and kiosk-setup script
on completion so root doesn't auto-login after the kiosk is running.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
jgitta