YunoHost/yunohost ? reverse-engineered prompt

Build me a simple self hosted server management system that makes it easy for a normal person to set up and administer a home server without needing to know Linux commands.

I want the core app to handle the basics like installing the system, managing users, handling logins, and providing a clean web admin area plus a simple user portal with single sign on. It should feel like a practical tool for running apps and services on a personal server, with sensible defaults and clear error messages.

Please make it work as a real usable project, not just a demo, and keep the code organized so it’s easy to maintain. If you need to check current docs or best practices, look them up online. Also make sure there are tests where it matters and that the install and setup flow is straightforward.