import { type DrizzleExecutor } from "../drizzle.js";
/**
 * Records a monotonic explicit presence heartbeat for an active human in users.lastSeenAt.
 * The caller supplies the server-observed timestamp carried by the ephemeral lease; deferring the
 * syncEvents boundary until offline keeps exact crash-safe state without global heartbeat fanout.
 */
export declare function userLastSeenTouch(executor: DrizzleExecutor, userId: string, lastSeenAt: string): Promise<void>;
//# sourceMappingURL=userLastSeenTouch.d.ts.map