export interface RefreshableJobMeta {
    id?: string;
    status?: string;
    pid?: number | null;
    pid_starttime?: number | null;
    pgid?: number | null;
    exit_code?: number | null;
    ended_at?: string | null;
}
/** True only if pid exists, starttime matches, and pgid matches. */
export declare function assertJobPidAlive(meta: RefreshableJobMeta): boolean;
/**
 * If job is marked running/paused but the process is gone (or stolen),
 * derive outcome from the `exit_code` file and persist meta. Returns the
 * (possibly updated) meta object.
 */
export declare function refreshJobStatus<T extends RefreshableJobMeta>(root: string, meta: T): Promise<T>;
/** Read meta.json then refresh status. */
export declare function readAndRefreshMeta(root: string, id: string): Promise<RefreshableJobMeta | null>;
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