Hello, and thank you!
You are correct, LemmyApps does not currently support Codeberg. I will add support soon, as I recently found the API documentation.
By pre-release candidates are you referring to releases built from source found in the GitHub/Releases tab? If so, this is intended. Some folks use it to publish Beta and Gold Master releases. The idea is that if there is a release, regardless of build stability, it would be noted.
Thank you for including LemmyApps in the sidebar! I am working on some new features that I can’t wait to share.