/** A crashed session disappears from "who is here" after 10 minutes. */
export declare const PRESENCE_TTL_MS: number;
/** Heartbeat interval: refresh presence every 2 minutes so live sessions
 *  never expire (TTL is 10 min — 5× margin). */
export declare const PRESENCE_HEARTBEAT_MS: number;
export interface PresenceEntry {
    pid: number;
    startedAt: string;
    updatedAt?: string;
    agentId?: string;
    kind?: string;
    taskId?: string;
    projectId?: string;
}
/** Live occupants of `path`, oldest first. */
export declare function listPresent(path: string): PresenceEntry[];
/**
 * Register (or heartbeat-refresh) THIS process in the folder. Deduped by
 * pid - calling it again just refreshes timestamps.
 */
export declare function registerPresence(path: string, info?: Omit<PresenceEntry, 'pid' | 'startedAt' | 'updatedAt'>): void;
/** Remove THIS process from the folder's registry. */
export declare function unregisterPresence(path: string): void;
/**
 * True when at least one OTHER live process occupies the folder. Used by
 * the daemon's auto-worktree escalation ("second agent showed up") and by
 * status endpoints.
 */
export declare function hasOtherOccupants(path: string, excludePid?: number): boolean;