Thinking in Reactor

Coming soon — this page is the mental-model essay that frames Microsoft.UI.Reactor (Reactor) for new readers: UI as a function of state, why there is no XAML, when to reach for hooks, and how components compose. See the AI Author Skill for the planned surface and the spec-041 §7.1 layout.

In the meantime, Getting Started covers the same ground from the hands-on direction, and Components and Hooks cover the building blocks.