Module audit 

Audit log types with Merkle verification (ISO 42001 / EU AI Act compliant)

Structs

AuditEvent

Single audit event (ISO 42001 / EU AI Act compliant)

HashParams

Parameters for consistent event hashing

Signature

Cryptographic signature for multi-party authorization (ISO 42001 A.6.1.3)

Enums

ActorType

Actor type for audit attribution (ISO 42001 A.6.2.8)

AuditEventType

Audit event types