Right now when you left click the Windows system tray icon it just shows the context menu.

I'd like it if double clicking the system tray icon would open the app, the same as clicking "Settings" in the context menu.

I think it can be done by adding this in lib.rs within TrayIconBuilder::new() :

.on_tray_icon_event(|tray, event| match event {
            tauri::tray::TrayIconEvent::DoubleClick {
                button: tauri::tray::MouseButton::Left,
                ..
            } => {
                show_main_window(tray.app_handle());
            }
            _ => {} // Ignore all other events (like single clicks, moves, etc)
        })

I would test it myself but I can't get it to compile due to unrelated vulkan stuff so I gave up.