/**
 * Default chat lenta: JSONL via `agent:messages` (see `ChatDisplayStore`).
 * `CHAT_HISTORY_JSONL=1` — additionally socket `agent:history` / app `agentHistory` (legacy).
 */
export function isChatHistoryFromJsonl() {
    return process.env.CHAT_HISTORY_JSONL === '1';
}
