This is pretty cool and I definitely think direct manipulation is essential to learnable programming. That being said, direct manipulation should ideally work

This is pretty cool and I definitely think direct manipulation is essential to learnable programming. That being said, direct manipulation should ideally work both ways: it's awesome that changes to the image update the code in real time, but code updates should also instantly update the image. The "run code" workflow is very clunky, especially when popular tools in production today actually do hot code reloading.