Added

Send messages to an agent while it is running

You can now message an agent while it's still working — no more waiting for it to finish. The chat input stays open during a run: type and send, and your message waits until the agent hits a natural stopping point, then reaches it without interrupting what it's doing. If the agent is already writing its final answer, your message starts a new turn once that's done.

Queued messages sit just above the input while they wait. Remove one before the agent picks it up, or send several in a row — they're delivered together, in order. Cancel a run or hit an error, and the input stays open so you can keep going without redoing finished work.