Feature-parity with Python v0.2.0. Same CSS, same UI, same actions.
Single 3.1 MB binary with embedded resources (CSS, wallpaper, avatar).
Modules: power.rs, i18n.rs, config.rs, users.rs, panel.rs, main.rs
45 unit tests passing. Python sources retained as reference.
loginctl lock-session requires a D-Bus listener that is
difficult to set up reliably. Direct moonlock invocation
is simpler and works immediately.
Also removes CSS fade-in animation (low-fps on layer shell).
