It was a bit agonising because I can be very low iq when it comes to being an elite bitcoin hacker, but I finally figured out how to use my own .well-known for my nostr address and for my lightning address. Hold your applause (but send zaps)
After years of tinkering I finally made a functioning Android app. All it does is display the block height, and I hate to confess that rellied heavily on ChatGPT when I got stuck. It was a great learning experience though and I feel accomplished.