import type { ChatMessage } from '../types.js';
export declare class SessionStore {
    private db;
    private dbPath;
    private saveTimer;
    constructor(dbPath: string);
    initAsync(): Promise<void>;
    init(): void;
    private initSchema;
    saveHistory(sessionId: string, messages: ChatMessage[]): void;
    loadHistory(sessionId: string): ChatMessage[];
    clearHistory(sessionId: string): void;
    close(): void;
    private save;
    private debounceSave;
}
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