/**
 * Doctor Command - System health check for AgentProbe.
 * Validates Node.js version, dependencies, API keys, config, and test files.
 */
export type CheckStatus = 'ok' | 'warn' | 'error';
export interface DoctorCheck {
    name: string;
    status: CheckStatus;
    message: string;
    detail?: string;
}
export interface DoctorResult {
    checks: DoctorCheck[];
    status: 'HEALTHY' | 'DEGRADED' | 'UNHEALTHY';
    warnings: number;
    errors: number;
}
/**
 * Check Node.js version (>= 18 required).
 */
export declare function checkNodeVersion(): DoctorCheck;
/**
 * Check if TypeScript is available.
 */
export declare function checkTypeScript(): DoctorCheck;
/**
 * Check if an API key environment variable is set.
 */
export declare function checkApiKey(name: string, envVar: string, required: boolean): DoctorCheck;
/**
 * Check if test directory exists and count test files.
 */
export declare function checkTestDirectory(baseDir: string): DoctorCheck;
/**
 * Check if config file exists and is valid.
 */
export declare function checkConfigFile(baseDir: string): DoctorCheck;
/**
 * Run all doctor checks.
 */
export declare function runDoctor(baseDir?: string): DoctorResult;
/**
 * Format doctor result for console display.
 */
export declare function formatDoctor(result: DoctorResult): string;
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