Addresses come from the command line rather than a file in the repo, because a list of testers is a
list of people's email addresses and this repository is public.
Defaults to the external group. The internal one only accepts people who already have an App Store
Connect account on the team, which is a much bigger thing to hand somebody than a build.
Claude-Session: https://claude.ai/code/session_018HwEWvoE1NkkUjJCMLSnup
