This is great, nice work!
I just thought you should know that BestPig has made changes to GB Studio 1 and 2 so that they can be used to export games to .pocket as well. Hopefully it shouldn't be as much of an effort on your part to export it. If you're not interested, I can take a look, I would be happy to do the port by hand as an IPS patch.
BestPig's Port: https://github.com/BestPig/gb-studio#analogue-pocket-export