export type A1HandshakeReasonCode = "delegation_evidence_invalid:invalid_signature" | "delegation_evidence_invalid:expired" | "delegation_evidence_invalid:scope_mismatch" | "delegation_evidence_invalid:identity_mismatch" | "delegation_evidence_invalid:depth_exceeded" | "delegation_evidence_invalid:malformed";
export type A1StructuralFailure = "empty_chain" | "root_mismatch" | "broken_linkage" | "unsupported_version" | "not_yet_valid" | "expired" | "temporal_violation" | "max_depth_exceeded" | "nonce_replay" | "scope_escalation" | "unauthorized_leaf" | "invalid_signature" | "scope_violation" | "invalid_subscope_proof" | "malformed";
export declare function mapStructuralFailure(failure: A1StructuralFailure): A1HandshakeReasonCode;