45436d0eda
F11 fullscreen toggle only makes sense on desktop; Android windows are always full-screen. Gates the fn and the MonitorSelection/WindowMode imports with #[cfg(not(target_os = "android"))] to keep clippy clean on the Android target. The add_systems call is extracted as a separate statement so #[cfg] can annotate it (cannot appear mid-chain). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>