No doubts so far, you've done a great job with code comments and clarity. Once I've got the remaining functions in place (have all but starbase refills, warp/impulse and combat) I'll upload it to github. Hopefully within a week!
I'm not familiar with ags, but the agsutils tools I used to unpack sprites and audio did not yield the galaxy map background. Perhaps it isn't a sprite in ags therefore not in the .spr file.