/** Ask pi headlessly for a concise briefing of `conversation`, async. Invokes
 *  `onRecap` with the parsed string on success, or never (silent) on any
 *  failure — non-zero exit, timeout, empty/garbled output. Owns the subprocess
 *  mechanics — crucially it hands pi an immediate stdin EOF: `pi -p` reads stdin,
 *  and execFile's default stdin is an OPEN pipe that never closes, so without
 *  this pi blocks waiting for EOF and the call exits non-zero (the same gotcha
 *  naming.ts documents). */
export declare function generateRecap(conversation: string, onRecap: (briefing: string) => void, liveModel?: string, roadmap?: string): void;