Expand description
Wire method: nativeHost:getColorScheme.
Returns { dark, highContrast }. Dark-mode probe covers macOS
AppleInterfaceStyle, Windows AppsUseLightTheme, and a Linux ladder
(GTK color-scheme → GTK theme name → KDE_COLOR_SCHEME → xfconf).
High-contrast probe is Windows HighContrast/Flags and the GNOME a11y
high-contrast key; other OSes return false.