/**
 * CLI file-based logging for CrewX SDK events.
 *
 * Subscribe to task:start / task:end events from a Crewx instance
 * and write structured log files to .crewx/logs/ in the workspace root.
 *
 * File name format: {YYYYMMDDTHHmmss}_{traceId}.log
 * e.g. 20260412T145044_tsk_AbCdEfGh.log
 *
 * Format mirrors cli-bak TaskManagementService for backward compatibility.
 */
import type { Crewx } from '@crewx/sdk';
/**
 * Attach file-based logging to a Crewx instance.
 * Subscribes to task:start and task:end events and writes log files.
 *
 * @param crewx - The Crewx instance to attach logging to
 * @param workspaceRoot - Root directory for .crewx/logs/ (default: process.cwd())
 * @returns Cleanup function that removes all event listeners
 */
export declare function attachFileLogger(crewx: Crewx, workspaceRoot?: string): () => void;