/**
 * Opaque, server-issued authority for one agent reply to one inbound message.
 *
 * The stream delivers this beside the triggering message. Runtimes keep it out
 * of model-visible schemas and return it only on the ordinary reply path.
 */
export interface AgentReplyAuthorityV1 {
    schema: 'canon.agent-reply-authority.v1';
    sourceMessageId: string;
    token: string;
    expiresAt: string;
    /** Agent membership admission at issuance; absent/null only for legacy membership. */
    admissionId?: string | null;
}