/**
 * Doctor command for Night Watch CLI
 * Validates environment setup and system health
 */
import { Command } from 'commander';
import { IWebhookConfig } from '@night-watch/core';
/**
 * Validate a single webhook configuration and return a list of issues.
 * Returns an empty array if the webhook is valid.
 */
export declare function validateWebhook(webhook: IWebhookConfig): string[];
/**
 * Register the doctor command on the program
 */
export declare function doctorCommand(program: Command): void;
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