export declare const HOST_LIFECYCLE_INTERVAL_MS = 5000;
export type HostLifecycleSweepReason = "startup" | "periodic";
export interface HostLifecyclePhaseContext {
    reason: HostLifecycleSweepReason;
}
export interface HostLifecyclePhase {
    name: string;
    run(context: HostLifecyclePhaseContext): Promise<void> | void;
}
export interface HostLifecyclePhaseError {
    phase: string;
    reason: HostLifecycleSweepReason;
    error: unknown;
}
/**
 * Schedule one deferred callback and return a function that cancels it.
 *
 * A host may use this seam to choose whether the underlying timer is ref'ed or
 * unref'ed. The default scheduler uses a normal ref'ed Node.js timer.
 */
export type HostLifecycleSchedule = (callback: () => void, delayMs: number) => () => void;
export interface HostLifecycleServiceOptions {
    intervalMs?: number;
    phases: readonly HostLifecyclePhase[];
    onPhaseError(error: HostLifecyclePhaseError): void;
    schedule?: HostLifecycleSchedule;
}
export interface HostLifecycleService {
    start(): void;
    stop(): Promise<void>;
}
/**
 * Run host-owned AKK reconciliation for as long as the embedding host is live.
 *
 * The service owns no process, Store, callback transport, or host configuration.
 * Its phases are compile-time injected by the host adapter and run sequentially
 * with independent error boundaries.
 */
export declare function createHostLifecycleService(options: HostLifecycleServiceOptions): HostLifecycleService;