export declare const FILE_OFFLOAD_THRESHOLD = 30000;
export declare const PREVIEW_SIZE = 2000;
export declare const FILE_FIRST_PREVIEW_SIZE = 500;
/**
 * Should this content be offloaded to a file instead of returned inline?
 */
export declare function shouldOffload(content: string): boolean;
/**
 * Write content to a temp file and track it for cleanup.
 * Returns the file path.
 */
export declare function offloadToFile(content: string): string;
/**
 * Build the replacement result text: preview + file path + instructions.
 */
export declare function buildOffloadResult(content: string, filePath: string): string;
/**
 * Remove all tracked temp files. Called on session_shutdown.
 */
export declare function cleanupTempFiles(): void;