justpramod/Nebra-WebOS ? reverse-engineered prompt

Build me a simple Python backend for a web based operating system project called Nebra WebOS.

I want a clean starter that can handle basic app requests, user sessions, and a few simple API endpoints so a front end can talk to it later. Please set it up in a way that is easy to run locally, easy to extend, and includes a basic health check plus a sensible project structure inside the backend folder.

If you need to make a choice on the exact framework or libraries, use whatever is the most practical and current, and look up current docs online if needed. Keep it lightweight, but make sure the code is organized enough that I can keep building on it without a lot of cleanup.