which: no zsh in (bin path) with terminal extension

Although zsh is installed on the host OS, visual studio code which is sandboxed does not include zsh.
I guess it should be bound into the sandbox.

Basically, zsh is ``/usr/bin/zsh`` on the host OS.

Start by inspecting the com.visualstudio.code sandbox and terminal extension configuration, focusing on how host executables are exposed. Verify whether /usr/bin/zsh is available inside the sandbox and confirm that the VS Code terminal can launch it when the issue is resolved.

Rédigé par le modèle d'indexation à partir du texte de l'issue.