The power here is the coding agent has the ability to test visually if - and like a human would. So if the button isn't visible, the browser agent would use vis

The power here is the coding agent has the ability to test visually if - and like a human would. So if the button isn't visible, the browser agent would use vision to detect that it's missing. It sorta tests 'just like a human would' to make sure the flow that's implemented works as it's expecting to.