# TODOs

## 1. Improve Preferred-Language Fallback after the Current Accept-Language Rollout

The current auth-registration flow derives the preferred-language candidate
from the public `Accept-Language` header and falls back to `en` when no
supported tag is available.

A later improvement may use the existing [geoip](../pkg/geoip) package as an
additional fallback when `Accept-Language` is absent or unusable, but it must:

- preserve the current public JSON DTOs
- continue emitting a valid BCP 47 tag for `User Service`
- keep `en` as the final safe fallback