Story

<Story id="button" persist="true">
  <StoryVariant title="Default" value="default">
    <DemoButton />
  </StoryVariant>
  <StoryVariant title="Disabled" value="disabled">
    <DemoButton state="disabled" />
  </StoryVariant>
</Story>

Variants use the same selected-tab model as normal Tabs, including persistent selection. StoryControl can display the active properties next to a preview. Interactive demos remain registered Foldkit components, so they use typed model, message, update, and view boundaries.