import type { ServerMetadata } from './resource-generator.js';
/**
 * Cached server-level metadata aggregated across all connected instances.
 * Updated reactively via EventBus subscriptions — no I/O, all synchronous cache lookups.
 */
declare class ServerMetadataCache {
    private cache;
    private unsubscribers;
    private initialized;
    initialize(): void;
    destroy(): void;
    get(serverName: string): ServerMetadata | undefined;
    refresh(serverName: string): void;
    refreshAll(): void;
    private buildMetadata;
}
export declare const serverMetadataCache: ServerMetadataCache;
export {};
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