// AGENTS.md §52 color system + theme switcher.
//
// `Theme` and `Palette` live on `MainWindow` rather than as `export global` —
// Slint 1.18 dead-code-eliminates globals whose binding is compile-time
// reducible (which Theme always is when the default `appearance` is Dark), so
// the only way to keep `Theme` reachable from Rust is to reference it through
// a property on the root component. `MainWindow.theme` is the single source
// of truth; everything else is derived in app.slint.

export enum AppearanceMode {
    System,
    Light,
    Dark,
}