🤖 **Polls and the Whiteboard join the widget bar.** They've moved into the
widget bar beside group chats — starting a `/poll` adds Poll to that chat
for everyone, with the results card one tap away instead of pinned above
every conversation. (Existing polls come back when Poll is added to their
chat.) Each place that isn't available for an app now also says why in
plain words ("Connections use your own account credentials — each person
links their own"; "A poll needs an audience — it lives in a group chat").