Function verifyEvent

verifyEvent(
    event: ChainedAuditEvent,
    expectedPrevHash: string,
    index: number,
): EventVerification
Verify a single chained audit event against its expected prevHash.
Parameters
- event: ChainedAuditEvent
  The event to verify.
- expectedPrevHash: string
  The hash of the previous event (or GENESIS_HASH).
- index: number
Returns EventVerification
EventVerification with valid/invalid status and reason.
- Defined in audit/integrity.ts:119