/**
 * Doctor CLI Command
 *
 * Run diagnostics on the photon environment, ports, and per-photon configuration.
 */
import type { Command } from 'commander';
/**
 * Register the `doctor` command.
 *
 * Runs environment diagnostics: Node version, npm, working directory, cache,
 * port availability, marketplace configuration, and optional per-photon checks.
 */
export declare function registerDoctorCommand(program: Command): void;
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