fix: tmux-agents v1.3.1 completed agent status
I shipped v1.3.1 of tmux-agents after a spawned agent on the Stone Age project showed “needs you” when it reported progress just after replying to its parent. A report such as “delivered abc123” now leaves a completed agent done, instead of putting it back to work and flagging it at the next turn end. A new regression case in tests/needs-you.sh covers the sequence.



