export interface MessageTemplate {
  id: string;
  code: string;
  name: string;
  type: 'sms' | 'email' | 'internal' | 'push';
  subject: string;
  content: string;
  variables: string[];
  description: string;
  isActive: boolean;
  createdAt: string;
  updatedAt: string;
  createdBy: string;
}