nethical6/conversation-steganography ? reverse-engineered prompt

Build me a small terminal app called Conversation Stenography that lets two people hide secret messages inside normal looking chat text. I want to type a real message, have it encrypted locally, then turned into innocent sounding cover text by a local AI model, so I can copy and paste that into WhatsApp, Signal, Telegram, email, or any other chat app. The other person should be able to paste that cover text into the tool and get the original message back.

Please make the first run feel simple with a setup wizard that helps pick and download a local model and saves the config. I also want a simulation mode so two users can test the whole flow on one device, switching between Alice and Bob in the terminal. Support named conversations, a shared secret phrase, message ordering checks, saved chat history, and basic commands like show history, status, help, paste incoming text, and quit. Keep everything local and make it clear this is an educational proof of concept.