import { LLMMessage } from './llm';
import { ToolContext, MemoryUpdate } from './tools';
export declare function listSessions(): {
    id: string;
    messages: number;
    createdAt: string;
    lastActiveAt: string;
}[];
export declare function clearSession(sessionId: string): void;
export interface ChatResult {
    reply: string;
    reasoning: string | null;
    sessionId: string;
    turns: number;
    toolCalls: string[];
    model: string;
    /** Updated conversation history — caller should persist this */
    history: LLMMessage[];
    /** Knowledge items the AI chose to save this turn */
    memoryUpdates: MemoryUpdate[];
}
export declare function orchestratorChat(sessionId: string, userMessage: string, ctx: ToolContext, opts?: {
    /** Pre-load history from DB — replaces in-memory session history */
    preloadedHistory?: LLMMessage[];
    /** Knowledge items to inject as context at start of conversation */
    knowledgeContext?: string;
}): Promise<ChatResult>;