VEX-1 Voice Execution Gateway
AuthorityRail is the only execution authority infrastructure with a voice gateway at v1.0. VEX-1 implements three-class clone detection running in parallel, each class under a 200ms hard timeout with fail-closed semantics — the timeout is an enforced ceiling, not a benchmark. Voice credential enrollment with privacy-by-design — raw audio is NEVER persisted, only 256-dimensional embeddings and signed transcripts. Phone numbers stored hashed not plaintext. HCES-1 escalation via the existing Twilio mobile_approval flow. Voice attack surface closed at the architectural layer.