I got super excited when I saw you had updated it. So I tried again, but I'm still not getting GP bonus from adjacent tiles. I built a Holy Site at my capitol, all six tiles were breathtaking, no bonus. If your intent was charming only, which I don't know why, I ended up with another Holy Site after I took Rio that had two Charming tiles adjacent to it, still no bonus. I'm mot a modder, so I don't know what else to help you out with except as a user.