/**
 * Dump I/O utilities — extracted from runner.ts.
 *
 * Snapshot dump path generation, TTL cleanup, reminder files,
 * and debug directory resolution.
 */
export declare const FLOW_DUMP_SNAPSHOT_ENV = "PI_FLOW_DUMP_SNAPSHOT";
export declare function resolveDumpMaxAgeHours(): number;
export declare function makeUniqueDumpPath(basePath: string, flowName: string): string;
export declare function makeUniqueDumpTxtPath(mdPath: string): string;
export declare function getDebugDir(cwd: string, jsonl: string | null): string;
export declare function cleanupStaleDumps(dumpPath: string, maxAgeHours?: number): Promise<void>;
export declare function cleanupStaleDebugDumps(cwd: string, maxAgeHours?: number): Promise<void>;
export declare function writeReminderFile(reminderFilePath: string | null, message: string): void;
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