hmilyld/zerochat ? reverse-engineered prompt

Build me a private messaging app like ZeroChat, where people can send one time messages that disappear after they are opened, plus encrypted chat rooms for ongoing conversations. I want all encryption to happen in the browser so the server never sees message content, and there should be no sign up, no cookies, and no tracking.

For the one time messages, let people send text or images, then destroy the message after viewing. For chat rooms, let users join with a shared link or room key, then exchange messages securely in real time. Make the interface simple and clean, with a modern look that works well on desktop and mobile.

Use a React frontend and a Node backend with Redis for storage, and make sure the app can run locally and in Docker. If you need to check current library docs, look them up online.