galaxy-game/gateway/TODO.md

TODOs

1. Suggest User's Preferred Language when registering a new User

Upon user's device/session registration flow, preferred_language value must be obtained via existing geoip package by returned country. The derived value must be emitted as a valid BCP 47 language tag because User Service now validates that contract semantically on create. When geoip fails to return country by IP, fallback is en.