Macro fui_app 

macro_rules! fui_app {
    ($page_ty:ty, $build_page:expr) => { ... };
}

Defines the standard FUI-RS application lifecycle exports.

The page can be a built-in node or a cloneable retained component that owns controls, state, subscriptions, workers, and other RAII resources. Use fui_managed_app! directly only when the mounted root needs custom projection or custom mount/dispose hooks.