/**
 * Attendant singleton registry for iranti.
 *
 * Ensures at most one `AttendantInstance` is alive per `agentId` per process.
 * The registry is intentionally process-local — cross-process coordination is
 * handled by the shared-state invalidation layer
 * (`unregisterSharedStateInvalidationObserver` is called on `clearAttendant`
 * so subscriptions don't leak when an instance is evicted).
 *
 * Key exports:
 *  - `getAttendant(agentId)`   — get-or-create the singleton for an agent
 *  - `clearAttendant(agentId)` — evict and deregister (used in tests / restarts)
 *  - `activeAttendants()`      — list all agentIds with live instances
 *  - `AttendantInstance`       — re-exported for convenience
 */
import { AttendantInstance } from './AttendantInstance';
export declare function getAttendant(agentId: string): AttendantInstance;
export declare function clearAttendant(agentId: string): void;
export declare function activeAttendants(): string[];
export { AttendantInstance } from './AttendantInstance';
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