inactive
Some content
Imagine a form or chart here.
Default — overlay is hidden.
active
Some content
Imagine a form or chart here.
Loading
Spinner overlay visible, content underneath dimmed.
busy-scoped
Some content
Imagine a form or chart here.
Tied to busy_scope='form_save'. The runtime can flip the overlay's data-busy-active attribute when the scope is busy. (v0.9.0 ships the rendering contract; runtime hookup is future work.)