opencharm-labs/opencharm ? reverse-engineered prompt

Build me OpenCharm, a small open source companion for an AI agent that has a face, a voice, and one physical key. I want it to work as a desktop charm first, so on macOS it sits by the notch, shows a simple little face with changing expressions, and lets me hold a key to talk to my agent, press it for other actions, and tap the face for quick interactions. It should connect to an existing agent like Claude Code, and ideally be able to work with other compatible agents too.

Please make the main flow feel polished and easy to use, with pairing, settings for choosing the agent folder, and a clear talking and speaking experience through the microphone and speaker. If it makes sense, include the emulator and the basic firmware or board support path so the project can grow toward the small hardware charm later. Keep it practical, testable, and friendly for someone who just wants to run it and try it. Look up current docs online if you need to.