Every change, every approval, every agent action is logged with timestamp, user, property, change type, and diff metadata. Queryable by any of those dimensions through UI or API. Exportable to your SIEM. Retained per your retention policy. The same log feeds engineering debugging, operations reporting, and compliance evidence.
Approvals live in inboxes nobody audits.
"Did you see the brief?" "Forwarded for sign-off." "Waiting on legal." The approval exists. It happens. Nobody can prove it happened, prove who approved it, or roll it back when the approver was wrong. Email is the audit trail.