> I assume for something like this to happen it would need all source code and design docs from Boston Dynamics in the training set. It seems unlikely it could independently make the same discoveries on its own.

No, to do this it would need to be able to independently reason, if it could do that, then the training data stops mattering. Training data is a crutch that makes these algos appear more intelligent than they are. If they were truly intelligent they would be able to learn independently and find information on their own.