Complete rewrite of the greetd greeter from Python/PyGObject to Rust/gtk4-rs
for consistency with moonset, single binary without Python runtime, and
improved security through Rust memory safety.
Modules: main, greeter, ipc, config, i18n, users, sessions, power
86 unit tests covering all modules including login_worker IPC flow.
Security hardening: shell-word splitting for exec_cmd, absolute path
validation for session binaries, session-name sanitization, absolute
loginctl path, atomic IPC writes.
Assets (default-avatar.svg, Icons) von data/ nach src/moongreet/data/
verschoben, damit sie automatisch im Wheel landen. Pfadauflösung in
greeter.py und main.py auf importlib.resources umgestellt. Dev-Fallback
in config.py entfernt — nur noch /etc/moongreet/moongreet.toml.
Beispiel-Configs für System-Deployment und AUR PKGBUILD ergänzt.