Echo grows up and becomes Hey, Reachy

Echo started as a companion-platform idea: memory, proactive behaviors, a model picker, a lot of surface area. When I picked it back up I wanted the opposite. One thing, done well: talk to the robot, and the robot talks back out loud. So I rebuilt it, and renamed it to what you actually say to it. Hey, Reachy. The loop wake word -> listen (VAD) -> transcribe (STT) -> brain (LLM) -> speak (TTS) -> nod You say a wake word, it wakes and listens, capture...