export interface TurnRecord {
    role: "user" | "assistant";
    content: string;
    ts: string;
}
export declare class ConversationStore {
    private readonly projectRoot;
    private readonly sessionId;
    constructor(projectRoot: string, sessionId: string);
    /**
     * Append a turn record to the session JSONL file.
     * Creates the .bober/chat/ directory if it does not yet exist.
     */
    append(record: TurnRecord): Promise<void>;
    /**
     * Load the most recent `limit` turns from the session JSONL.
     * Returns records newest-last (chronological order).
     * Skips any malformed (non-parseable) lines silently.
     */
    loadRecent(limit: number): Promise<TurnRecord[]>;
}
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