A connected composer disabled Send until every attachment finished
uploading, so on a slow link the user sat watching a progress ring even
though the offline path already knew how to queue the message and let the
outbox drain finish the upload. Only a failed upload now blocks sending,
since the drain would hit the same failure. With an upload in flight, the
new-task screen queues the task instead of starting it, and both composers
label the button Queue so the delayed send is not a surprise.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>