Translate README.md and config/moonset.toml comments from German to English to enforce the repo language policy. Remove journal.md as it was a one-time snapshot, not an actively maintained document.
5 Power-Aktionen (lock, logout, hibernate, reboot, shutdown), GTK4 + Layer Shell UI mit Catppuccin Mocha Theme, Multi-Monitor-Support, Inline-Confirmation, DE/EN i18n, TOML-Config mit Wallpaper-Fallback. 54 Tests grün.
