Honestly the hardest thing for this was getting the pins in the right place. I had Claude create a tool for me to get the location and have it correct placements. Even after a dozen 'pins' were on the map, it still had problems placing the next pin (relative to the ones it had). Claude has gotten better and honestly I had not figured out Claude in the browser when I built this.
Yes, I ran across that issue. There's also been the issue of collision avoidance for me! (By the way, check out the superpowers brainstorming skill and yume--implementer skill -- I would have gone insane without them)