/**
 * `are implement` CLI command handler.
 *
 * Orchestrates the full implementation comparison workflow:
 * 1. Load existing plan from `are plan` results
 * 2. Re-create worktree pair from plan branches
 * 3. Run AI implementation in each worktree (without-docs first)
 * 4. Extract metrics (files, lines, commits, optional tests/build/lint)
 * 5. Save results and render comparison
 * 6. Optionally run AI evaluator (--eval)
 *
 * @module
 */
import type { ImplementOptions } from '../implement/types.js';
/**
 * Execute the `are implement` command.
 *
 * @param task - The task description (or empty if using --list/--show)
 * @param targetPath - Project root directory
 * @param options - Command options
 */
export declare function implementCommand(task: string, targetPath: string, options: ImplementOptions): Promise<void>;
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