/**
 * Initialises the Intlayer editor client singleton when the editor is enabled.
 * Syncs the current locale from intlayerStore into the editor manager so the
 * editor always knows which locale the app is displaying.
 *
 * setupIntlayer keeps intlayerStore in sync whenever setLocale is called, so
 * subscribing to the store gives us reactive locale updates without needing
 * direct access to the Svelte 5 rune state.
 */
export declare const useEditor: () => void;