/**
 * In-session scheduler service. A 30s tick checks due tasks and fires them
 * by enqueueing the prompt into the session's input multiplexer — firings
 * always land at turn boundaries, never mid-turn.
 *
 * Catch-up semantics: on service start, durable tasks whose nextFireAt
 * passed while no session was running fire once (a slept-through task
 * fires once, not once per missed interval — see markFired).
 *
 * Firing when NO session is running is out of scope here: the launchd
 * agent hosts the payment proxy, not an agent loop. Durable tasks simply
 * wait for the next session.
 */
export interface SchedulerService {
    stop: () => void;
    /** Immediate due-check — used by tests and session-start catch-up. */
    tick: () => number;
}
export declare function startSchedulerService(opts: {
    sessionId: string;
    enqueue: (text: string) => void;
    /** Visibility line pushed to the transcript when a task fires. */
    notify?: (line: string) => void;
}): SchedulerService;