facebookincubator/muse-gadget-sdk ? reverse-engineered prompt

Build me a working starter for Muse gadgets that I can open in the IDE and run on either an ESP32 board or a Raspberry Pi or Linux machine.

I want the project to let me pair the gadget with the Muse app, use a token, and then drive a simple display based gadget that can show something useful on screen and react to buttons or other inputs. If it makes sense, include a basic example for both the ESP32 side and the Linux side so I can see how each one is supposed to work.

Please keep it practical and easy to flash or run, with clear setup steps and sensible defaults. If you need to check anything current, look up the latest docs online. Also make sure the code is clean enough that I can tweak it later for my own sensors, actuators, or little home automation ideas.