Of course it can't be written into your bell tester. It's not hiding anything. It works because of the post-selection. But this selection is done in a locally

Of course it can't be written into your bell tester. It's not hiding anything. It works because of the post-selection. But this selection is done in a locally compatible way. It works because you as the (virtual) experimenter can specify/choose explicitly a precise definition of what a measurement is, (which you can't do in your widget). My code is showing an example of the general structure of how you could/should define what a measurement is, in such a way that you preserve both the locality of the world, and the observed violation of the Bell inequalities (according to your definition of what a measurement is). I'd argue that it's in essence doing what, one way or the other, the real world measurement apparatuses of the experimenters are doing.