I Gave My Newsletter a Voice (Literally) My newsletter site has a chat widget now. You type a question, it searches through every issue I've ever written, and gives you an answer with sources. That took an evening. Cool, but not interesting enough to write about. What made me write this: I added a microphone button next to the text input. Click it, and you're in a real-time voice conversation with an AI agent that knows my content. You talk, it listens, it talks back. Not a recording. Not text-to-speech over a chat response. An actual voice conversation. The stack behind it is LiveKit, and I want to walk through how it works because it's simpler than I expected. What LiveKit Actually Does LiveKit is real-time communication infrastructure. Think "Zoom but programmable." It handles all the WebRTC complexity — rooms, audio routing, codecs, latency optimization — so you don't have to. The part that matters for AI voice agents: LiveKit has an agent framework.…