kubikpatrick/Betelgeuse — reverse-engineered prompt

Build me a simple open source app for finding my own devices. I want a small background program I can run on a laptop or other personal device that reports where it is, an API that receives those updates, and a web page where I can log in and see my devices on a map.

Keep it practical and easy to run. The web app should show each device name, last known location, last seen time, and whether it looks online or offline. I should be able to add or remove devices and copy whatever token or setup value the device program needs. The device program should quietly send location updates on a schedule and handle being offline without crashing.

Use the existing C# solution structure with the API, daemon, and web projects. Make the first version clean and working rather than fancy. If you need current map or location docs, look them up online.