/**
 * Get or create a session ID scoped to the given project.
 *
 * A session is considered alive only while there has been genuine user activity
 * within SESSION_TIMEOUT. We renew the activity timestamp from the real
 * user-input signal (see activity.ts) rather than from the mere fact that
 * getSessionId was called — otherwise background work (e.g. the recorder's
 * periodic flush) would keep an idle session alive indefinitely.
 */
export declare function getSessionId(projectId: string): string;
/**
 * Keep the activity cookie fresh while the user is genuinely active, so the
 * session window reflects real interaction even between getSessionId calls.
 */
export declare function initSessionActivityTracking(projectId: string): void;