Google ADK's Replay and Live modes: which one should the gate be attached to

Based on the Conformance section of Google ADK's official documentation "Why evaluate agents," the author reviews the Replay and Live modes of the adk conformance test, and uses a script that relies only on the standard library to replicate the replay comparison logic, injecting six kinds of changes to observe which layer each one triggers. The conclusion is to keep the gate on Replay; Live Mode is officially marked as still under development and is only suitable as a source of the change list. The article also presents a process design with four actions: recording registration, paired submission, two-person review, and CI, and points out that Replay can only prove consistency with recorded interactions, not whether the business logic is correct.