lapuinkfabioPublic/jade ? reverse-engineered prompt

Build me a simple Android app that connects to a nearby Bluetooth device and lets me send commands to it from the phone. I want a clean main screen with basic controls, connection status, and a place to show messages or readings coming back from the device.

If it helps, also wire up the small companion pieces in this repo so the whole thing works together, including the Bluetooth connection code, the Arduino side, and the helper scripts or server pieces. I’d like it to feel like a working end to end demo, not just a UI mockup.

Please keep it straightforward and easy to run, and if you need current setup details for Android or Bluetooth behavior, look up the latest docs online. Also make sure the code is organized clearly so I can test it on a real device without too much extra setup.