Feature Request: Environment Variable and Current Directory changes from Shell should cascade up to q chat

I expect when calling `!cd directory`, or when `shell_execute cd directory`, for it to change the directory for the entire process, not just for the shell command.
I also want the equivalent for environment variables (ie. capture new environment variable changes after a shell command completes, and bring those into the parent environment).

This combination would allow for tools that require configuration, as well as changing projects that we are working on without exiting and going back in.