export interface HubStatus {
    running: boolean;
    port: number;
    agentCount: number;
    agents: string[];
}
/**
 * Check if the hub is running and get its status.
 * Uses a probe-only connection (no registration) to avoid polluting the
 * presence list seen by all connected agents.
 */
export declare function checkHubStatus(hubUrl: string): Promise<HubStatus>;
/**
 * Start the hub as a background process
 */
export declare function startHubBackground(port: number): void;
/**
 * Kill the running hub process (using saved PID or port scan).
 */
export declare function stopHub(port: number): void;
/**
 * Ensure hub is running, start it if not.
 * If force=true, kill any existing hub first to flush stale agents.
 */
export declare function ensureHubRunning(hubUrl: string, force?: boolean): Promise<HubStatus>;
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