import type { Message, MemoryStore } from '../core/types';
/**
 * DeepBrain-backed memory store for long-term semantic memory.
 * Falls back to local JSON file storage (.opc/memory.json) if deepbrain package is not installed.
 */
export interface DeepBrainClient {
    store(collection: string, id: string, content: string, metadata?: Record<string, unknown>): Promise<void>;
    search(collection: string, query: string, limit?: number): Promise<Array<{
        id: string;
        content: string;
        score: number;
    }>>;
    delete(collection: string, id?: string): Promise<void>;
}
export declare class DeepBrainMemoryStore implements MemoryStore {
    private fallback;
    private client;
    private collection;
    private ready;
    constructor(options?: {
        collection?: string;
        config?: Record<string, unknown>;
    });
    private initClient;
    get(key: string): Promise<unknown>;
    set(key: string, value: unknown): Promise<void>;
    getConversation(sessionId: string): Promise<Message[]>;
    addMessage(sessionId: string, message: Message): Promise<void>;
    clear(sessionId?: string): Promise<void>;
    /**
     * Semantic search over stored memories.
     */
    semanticSearch(query: string, limit?: number): Promise<Array<{
        id: string;
        content: string;
        score: number;
    }>>;
    isDeepBrainAvailable(): Promise<boolean>;
}
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