Should I create a new chat-based harness?
The current harness works. This one would add a chat box, because apparently every product must eventually become chat.
Everyone understands a chat box.
It could make the first five minutes of a demo instantly legible.
The interface could become the product by accident.
Chat turns durable work into a conversation and invites scope creep.
The chat box is the easy part.
Session state, tools, recovery, and honest failure semantics are the work.
Prototype the interaction if it helps onboarding. Do not turn durable jobs into chat sessions just to look familiar.