Add a self-expiring override system so specific late-night live events
(2026 World Cup matches) can be watched without the auto-shutdown killing
the PC, without weakening the permanent schedule ratchet:
- shutdown-override-manager.sh (add/list/remove): add is friction-gated
(typed confirmation phrase + 30s delay, max 12h, max 3 windows) and
writes absolute-epoch windows to /etc/shutdown-schedule-overrides.conf.
- day-specific-shutdown-check.sh now skips the shutdown decision inside an
active window (pruning expired entries) and gained a DRY_RUN guard around
rtcwake/poweroff/hibernate for safe testing.
i3blocks shutdown_countdown.sh: show the exact next-shutdown clock time
(not a relative countdown), show the overridden end time in green when an
override is active or will rescue the upcoming shutdown, and make the
skip-dates check fork-free (builtin read loop) so the hot path spawns no
external processes.
install.sh: deploy i3blocks by symlinking each repo file into
~/.config/i3blocks instead of cp -r (the source of silent drift), cd to
the script dir so it runs from anywhere, and chmod +x only *.sh so the
config file stays 0644.
Repair the previously-dead i3blocks regression suite (stale path), update
the shutdown assertion to the new absolute-time output, add hermetic
override coverage, and keep the <=1-exec fork-count guarantee.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NmwYH5RfThZGkVD2jE61Da
