export type NotebookJournalRetention = "off" | "week" | "on";
export type NotebookCheckpointRetention = "never" | "month" | "week";
export declare function normalizeNotebookJournalRetention(value: unknown): NotebookJournalRetention;
export declare function notebookJournalRetention(agentDir: string): NotebookJournalRetention;
export declare function notebookCheckpointRetention(agentDir: string): NotebookCheckpointRetention;
export declare function notebookJournalsDirectory(agentDir: string): string;
export declare function scheduleNotebookStorageMaintenance(agentDir: string, force?: boolean): void;
export declare function maintainNotebookStorage(agentDir: string, force?: boolean, now?: number): Promise<void>;
export declare function maintainNotebookJournals(agentDir: string, now?: number): void;
export declare function removeExpiredNotebookJournalFiles(files: string[], now?: number): void;