doorkeeper-i18n provides internationalization (i18n) support for the Doorkeeper OAuth 2 provider gem. It includes translation files for multiple languages to localize Doorkeeper's user interface elements, error messages, and other text strings. Supported languages include: English, German, Spanish, French, Italian, Portuguese, Japanese, Chinese (Simplified and Traditional), Russian, Dutch, Swedish, Polish, and many others. This gem is designed to work seamlessly with Ruby on Rails applications that use Doorkeeper for OAuth 2 authentication and authorization.