Reactor Windowing

Use this skill when a task involves top-level windows, placement, shell chrome, taskbar features, displays, or native pickers.

Core APIs

var win = ReactorApp.OpenWindow(
    new WindowSpec { Title = "Settings", Width = 520, Height = 420 },
    () => new SettingsWindow());

win.Activate();
win.Close();

WindowSpec is immutable startup intent. ReactorWindow is the live handle for runtime mutators (SetSize, SetPosition, SetAspectRatio, BeginDragMove, SavePlacement, Update).