Function useCupThreadAppConfig

useCupThreadAppConfig(): {
    appConfig: PublicAppConfig
    | null;
    isLoadingConfig: boolean;
}
Hook retrieving the remote application configuration and loading state.

Returns { appConfig: PublicAppConfig | null; isLoadingConfig: boolean }
An object containing appConfig (or null if not yet loaded) and isLoadingConfig.
Example
```
function SurfaceWrapper() {
  const { appConfig, isLoadingConfig } = useCupThreadAppConfig();
  const isEnabled = isSurfaceEnabled(appConfig, 'roadmap');
  if (!isLoadingConfig && !isEnabled) return <Text>Unavailable</Text>;
  return <RoadmapView />;
}
```
- Defined in src/theme/CupThreadThemeProvider.tsx:677