Support alternate WSL distros besides the default

What version of the Codex App are you using (From “About Codex” dialog)?

26.325.31654

What subscription do you have?

Plus

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

When the project cwd is a \\wsl$\Ubuntu-24.04\... workspace, shell calls should honor that distro instead of silently using the default WSL distro.

Later in development the AI reverted to using just WSL and rolling with it not realizing it switched distros.

What steps can reproduce the bug?

Have 2 WSL ubuntu distros installed with the same git project on both. Use the non WSL default disto to develop with the codex app set the the windows \\wsl$\ project path set to the distro you want to develop on. Eventually the AI will switch and just roll with it rather than checking against the apps project directory.

What is the expected behavior?

It shouldnt switch distros. and if it does it should be able to catch that. It should know which disto to use based on the directory set in the codex app. this is for WSL.

Additional information

_No response_