/**
 * synap subscribe
 *
 * Long-poll the pod's Pulse/subscription feed and stream events as NDJSON.
 * Polls GET /api/hub/subscriptions every 3 seconds with a cursor.
 *
 * Usage:
 *   synap subscribe                       # all events
 *   synap subscribe --event proposal.*    # filter by eventType pattern
 *   synap subscribe --limit 50            # events per poll
 */
export interface SubscribeOpts {
    event?: string;
    limit?: string;
    json?: boolean;
    podUrl?: string;
    apiKey?: string;
}
export declare function subscribeEvents(opts: SubscribeOpts): Promise<void>;