import type { IndexNode } from './entity-index.js';
import type { EntityIndex } from './entity-index.js';
import type { EntityTypeName } from './entity.js';
export interface EmbeddingSearchResult {
    key: string;
    similarity: number;
}
export interface SyncResult {
    added: number;
    updated: number;
    removed: number;
}
export declare class EmbeddingIndex {
    private store;
    private dirty;
    private _loaded;
    private queryCache;
    private static QUERY_CACHE_MAX;
    private static QUERY_CACHE_TTL;
    get isLoaded(): boolean;
    load(): Promise<void>;
    save(): Promise<void>;
    sync(entityIndex: EntityIndex): Promise<SyncResult>;
    upsert(key: string, node: Pick<IndexNode, 'title' | 'tags' | 'summary' | 'bodySnippet'>): Promise<void>;
    remove(key: string): void;
    private getQueryVector;
    search(query: string, topK?: number, entityType?: EntityTypeName): Promise<EmbeddingSearchResult[]>;
}
export declare function getEmbeddingIndex(): EmbeddingIndex;
/** Reset the singleton (for testing/eval harness). */
export declare function resetEmbeddingIndex(): void;
//# sourceMappingURL=embedding-index.d.ts.map