export interface HealthDTO {
  status: 'ok' | 'degraded' | 'error' | 'unknown';
  timestamp: string;
  uptime?: number;
  responseTime?: number;
  errorRate?: number;
  lastCheck?: string;
  checksPassed?: number;
  checksFailed?: number;
  components?: Array<{
    name: string;
    status: 'ok' | 'degraded' | 'error' | 'unknown';
    lastCheck?: string;
    responseTime?: number;
    errorRate?: number;
  }>;
  alerts?: Array<{
    id: string;
    type: 'critical' | 'warning' | 'info';
    title: string;
    message: string;
    timestamp: string;
  }>;
}