Sorry, but this sounds like an uneconomical thing to do, even if a machine like this existed. Trying to remove all the lead paint without taking out the glass just doesn't seem possible, and there's no way to "efficiently and effectively" get rid of all that toxic dust, which would coat the machine and the inside of any enclosure that contained it. The profiles of each old window mullion are going to be different, and the router bits to create them would have to be custom-ground. And being covered with old lead paint is not the only problem that old wooden windows tend to have. They're often cracked, rotten, and disjointed as well.
If your friend wanted any of item #6 on your list, he'd be better off concentrating on #2 - capturing the dimensions of the existing windows. That might be done with a machine, although it's hard to see it being much better or faster than an experienced person with a measuring tool. Making new windows from scratch that conform to the dimensions of the old ones, and fit in the same spaces, would not only be cheaper and easier, but the end product would be far superior.