/**
 * Versioned command envelope (reused from support-service's command pattern).
 * Every externally-visible mutation carries a schema name + numeric version +
 * an idempotency key. Kept dependency-free here (a type); the service defines a
 * class-validator DTO that conforms to it.
 */
export interface CommandEnvelope<P = Record<string, unknown>> {
  schemaName: string;
  schemaVersion: number;
  idempotencyKey: string;
  payload: P;
}