import type { GoalEvent, GoalEventSink } from "./domain.js";
/**
 * Append-only JSONL diagnostics for goal lifecycle transitions. Opt in with
 * `PI_AGENT_GOAL_EVENT_LOG=<path>`; stalls can then be diagnosed from events instead of
 * reconstructing them from session transcripts.
 */
export declare class JsonlGoalEventSink implements GoalEventSink {
    private readonly path;
    private readonly now;
    private directoryReady;
    constructor(path: string, now?: () => Date);
    record(event: GoalEvent): void;
}