Context

We'd like to be able to use a stable Python version from our own toolchain, to avoid hard-coding paths like /opt/python/312/. This will also take the guesswork out of using just or uv since they'll always be available from a stable path.

We can already use /Library/Frameworks/Python.Framework/Versions/Current on MacOS. I confirmed with DevProd that we can add a symlink for /opt/python/Current and that will get picked up. For Windows we can copy the latest stable release to c:/Python/Current.

Definition of done

Update the toolchain to use stable paths.

Pitfalls

None