Theme Switching

Use PapyrusConfig for initial theme and setDocumentState for runtime changes.

const INITIAL_SDK_CONFIG: PapyrusConfig = {
  initialUITheme: 'dark',
  initialPageTheme: 'sepia',
};

// Runtime
setDocumentState({ uiTheme: 'light' });
setDocumentState({ pageTheme: 'high-contrast' });