Mozilla made a local translation model for Firefox. I believe there’s a few free apps which use the model to use it standalone.

I still haven’t gotten to give it a full proper go. But Toolbx is designed to assist with development on immutable OSs. Let’s you do regular package installs for all the various Dev tools into a container. Can either install your IDE into the container and run it like a regular app, or use an IDE with built-in Dev Container support.