I can't prove a flow worked after the run history disappears

Power Automate stores flow run records for 28 days by default. When managers later ask for proof that an email was sent or a record updated, the run history is gone. Makers must add manual evidence capture steps to create lasting audit records outside the retention window.

This is a researched blocker from Power Automate Builders. Below is the solution path — from understanding it to a paste-ready asset.