kazoo-classic/monster-ui ? reverse-engineered prompt

Build me the Monster UI project, a browser based admin interface for Kazoo, and make it run locally so I can connect it to my own Kazoo server.

I want the app to load data from a configurable API URL, start in a development mode on localhost, and be easy to set up with a simple install and build command. Include the basic project structure, the build workflow, and whatever is needed so it can be served from a local web server after I point it at my server address in the config file.

If there are docs or setup details that would help, include them too, and make sure the app is ready for future community apps to be added later. Keep it practical and working, and if you need current setup details from the docs, look them up online.