/**
 * Planned relaunches — sessions Crewly is stopping and starting again on
 * purpose (the runtime fallback moving an agent to another runtime, or back).
 *
 * A planned relaunch is not a crash or a hang. While a session is marked here
 * the orchestrator restart service, the orchestrator / agent heartbeat
 * monitors and hung-session detection leave it alone: no "Orchestrator
 * Restarted … unresponsive" alarm, no restart attempt counted, no ghost
 * downgrade. The service that relaunches sends its own single owner message.
 *
 * Module-level and dependency-free so every monitor can import it without
 * import cycles.
 *
 * @module services/agent/planned-relaunch.registry
 */
/** One planned relaunch. */
export interface PlannedRelaunch {
    /** Who asked for it (e.g. `runtime_fallback`) */
    reason: string;
    /** Epoch ms the window ends */
    until: number;
}
/**
 * Mark a session as being relaunched on purpose (or extend its window).
 *
 * @param sessionName - Session
 * @param reason - Who relaunches it
 * @param windowMs - How long it counts as planned
 * @param now - Current time (ms)
 *
 * @example
 * ```ts
 * markPlannedRelaunch('crewly-orc', 'runtime_fallback');
 * ```
 */
export declare function markPlannedRelaunch(sessionName: string, reason: string, windowMs?: number, now?: number): void;
/**
 * The planned relaunch of a session, while its window lasts.
 *
 * @param sessionName - Session
 * @param now - Current time (ms)
 * @returns The record, or null
 */
export declare function getPlannedRelaunch(sessionName: string, now?: number): PlannedRelaunch | null;
/**
 * Whether a session is being relaunched on purpose right now.
 *
 * @param sessionName - Session
 * @param now - Current time (ms)
 * @returns True inside the window
 */
export declare function isPlannedRelaunch(sessionName: string, now?: number): boolean;
/**
 * End a session's planned-relaunch window.
 *
 * @param sessionName - Session
 */
export declare function clearPlannedRelaunch(sessionName: string): void;
/** Forget every planned relaunch (tests). */
export declare function resetPlannedRelaunches(): void;
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