interface GraphQueryParams {
    accountId: string;
    query?: string;
    sender?: string;
    dateFrom?: string;
    dateTo?: string;
    direction?: "inbound" | "outbound";
    offset?: number;
    limit?: number;
}
/**
 * Query Email nodes stored in the graph.
 *
 * Two modes:
 *   - List (no query): Cypher MATCH with optional filters, sorted by receivedAt DESC
 *   - Search (query provided): embed via Ollama, vector similarity on email_embedding index
 *
 * Always scoped to accountId. Thread info enriched when available.
 */
export declare function emailGraphQuery(params: GraphQueryParams): Promise<string>;
export {};
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