import type { OpenClawConfig } from "../config/types.js";
export type HistoryMaintenanceResult = {
    prunedFiles: number;
    prunedDirs: number;
};
export declare function sweepAgentHistoryRetention(params: {
    cfg: OpenClawConfig;
    agentId: string;
    now?: Date;
}): Promise<HistoryMaintenanceResult>;