I turned Jev into a (lousy) chatbot

We know Jev. jevchat turns that into a chat model. At every step it asks Jev one question: Given the user's question and the reply written so far, which symbol comes next? The options are an alphabet plus an option to stop emitting. Jev returns a probability for each one, and the sampler draws the next symbol from that normalised distribution. Append, repeat, and stop when STOP is drawn. There are...