How to use jupyverse as the backend server when developing the JupyterLab frontend?

I’m working on extending the JupyterLab frontend to support the new kernels REST API provided by jupyverse (#12867) which is part of my primary goal of supporting reconnecting to background executions, such as in the case of network interruptions (#2833).

It’s not clear to me how I would substitute jupyverse for jupyter-server when developing JupyterLab’s frontend. Could the community provide guidance?