Collapse the chain-of-thought by default with a pulsing Thinking header,
summarize tool calls as 'N tools called', and hide success outcomes.
Add a copy button and hover timestamps under each message (agent left,
user right).
Stream client: subscribe before POST without the open-event gate
(avoids a deadlock) and set the session URL with history.replaceState
instead of router.push (avoids remounting mid-stream).
alejandrobailo
cc1dd9b581