A log is only useful if the person accountable can read it. A run log has to answer four questions.
What did it read?
The email, the attachment, the record. Linked, not summarized.
What did it decide, and why?
Each decision sits next to the rule or the evidence behind it.
What did it change?
Every write, with the value before and after.
Who approved what?
The person, the time, and the exact version they approved.
If a log can’t answer these in under a minute, it’s a debugging tool, not an audit trail.