export interface SubagentTurnRecord {
    status: "completed" | "interrupted" | "failed";
    output?: string;
    error?: string;
    model?: string;
    turn_count: number;
    token_usage: {
        input: number;
        output: number;
    };
    completed_at: number;
}
export declare function writeTurnRecord(childSessionPath: string | undefined, record: SubagentTurnRecord): Promise<void>;
export declare function readTurnRecord(childSessionPath: string | undefined): Promise<SubagentTurnRecord | undefined>;
/** ADOPTED records have served their purpose; keep the transcript dir clean. */
export declare function clearTurnRecord(childSessionPath: string | undefined): Promise<void>;
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