Review the Render Against the Requirement

The dashboard builds successfully, but a customer cannot read the mobile table. A compilation check did its job; it did not test that reading experience.

Give the agent the intended design and ask it to capture the implemented page at the relevant viewport and state. Compare the render, list concrete differences and fix those that violate the requirement.

A screenshot is evidence to inspect, not a complete visual test by itself. Image comparison can catch layout changes while missing keyboard behavior, a hidden error state or a wrong interaction. The model's visual judgment can also be mistaken.

Pair captures with checks of the actual controls, loading and error states, and accessibility. Retain the before-and-after artifacts so another person can assess the change. Make the output inspectable, then ask the responsible reviewer to accept it.