Bugfixes and Improvements:
- Opening a chat no longer triggers a full page reload
- For OpenAI models hosted via GWDG, only the supported chat completions endpoint is now available for selection
- Text overflow issues with long words and URLs have been fixed
- The allowed values for reasoning_effort have been corrected for certain OpenAI models
- Chat links can now be opened directly even when the user is not logged in
- Shared chats can now be opened directly even when the user is not logged in

