import type { DaemonRuntimeRouteContext } from './runtime-route-types.js';
/**
 * Handle POST /api/sessions/register, the idempotent registration + heartbeat
 * upsert keyed on a caller-supplied `sessionId`. Requires a participant triple
 * {surfaceKind, surfaceId, userId?}; carries the identity spine (kind + project)
 * onto the record. Re-calling with the same id advances participant.lastSeenAt.
 */
export declare function handleRegisterSharedSession(context: DaemonRuntimeRouteContext, req: Request): Promise<Response>;
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