/**
 * M4 — the `/arc` slash command: a human-friendly window into the same
 * machinery the model tools expose (status, one-shot compress, decompress).
 * @module dsh-arc-context/commands
 */
import type { CommandDefinition } from '@deepseek-ai/dsh-commands';
import type { ToolEnvironment } from './tools.ts';
/** Register the /arc command (idempotent per engine). */
export declare function arcCommand(env: ToolEnvironment): CommandDefinition;