export interface BrainChatCitation {
    memoryId: string;
    content: string;
    category: string;
    agent: string;
    score: number;
}
export interface BrainChatTurn {
    id: string;
    conversationId: string;
    role: 'user' | 'assistant';
    content: string;
    citations?: BrainChatCitation[];
    provider?: string;
    model?: string;
    createdAt: Date;
    tokensUsed?: number;
    cached?: boolean;
}
export declare class BrainChat {
    private history;
    private initialized;
    init(): Promise<void>;
    ask(question: string, opts?: {
        conversationId?: string;
        maxCitations?: number;
        projectDir?: string;
    }): Promise<BrainChatTurn>;
    listConversations(): Array<{
        id: string;
        turnCount: number;
        lastActive: Date;
        preview: string;
    }>;
    getConversation(id: string): BrainChatTurn[];
    clearConversation(id: string): Promise<boolean>;
    clearAll(): Promise<void>;
    private persist;
}
export declare function getBrainChat(): BrainChat;
export declare function resetBrainChatForTests(): void;
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