Adds the questionnaire and empty-state primitives and renders the
ask_user_question tool call inline in the chat, so the agent can offer choices
instead of guessing when a request is ambiguous.
Disabling the textarea for the duration of a response made the browser blur it,
so the caret left the composer on every send and had to be clicked back. send()
already ignores calls mid-stream, so Enter stays a no-op and type-ahead works.
Every step-start part serialises to the same JSON, so the content-derived key
collided for any multi-step assistant message and React warned about duplicate
keys on each incoming chunk. Two identical text parts collided the same way.
Parts are append-only and never reordered by the AI SDK, so the index is stable.
Amruth Pillai