import type { UiService } from '../domain/ui-service/types.js';
/** Handle app.ts holds for shutdown — structural, so this module needs no transport types at runtime. */
export interface UiHttpHandle {
    close: () => Promise<void>;
}
/**
 * Start the Web UI HTTP+SSE transport-host on demand when CORTEX_UI_HTTP is set, else return null.
 * The transport module (which pulls @trpc/server + jose) is loaded via a dynamic import that is
 * only reached inside the enabled branch, so an unset flag keeps those deps out of the runtime graph.
 */
export declare function startUiHttpIfEnabled(uiService: UiService, env?: NodeJS.ProcessEnv): Promise<UiHttpHandle | null>;