- Remove 'disable' option from setup_midnight_shutdown.sh
- Add shutdown-timer-monitor.sh that watches the timer every 30s
- Re-enables timer automatically if someone tries to disable it
- Monitor service installed alongside the timer
- Makes it significantly harder to bypass the shutdown schedule
- Similar pattern to hosts-file-monitor.service
- Replace 'A && B || C' patterns with proper if-then-else statements (SC2015)
- Add check_for_virtualbox function to invoke prompt_for_virtualbox_challenge (SC2317)
- Fix install_launcher function to escape variable in heredoc (SC2119/SC2120)
- Apply shfmt formatting to ensure consistent style
Fixes 7 SC2015 violations, 1 SC2317 violation, and 1 SC2119/SC2120 pair.
All 79 shell files now pass shellcheck without errors.