- Add a toggle on the picture-in-picture window to swap the big board
with the mini view of the opponent's field
- Color-coded frame and badge identify whose board is currently shown
(blue = player 1, orange = player 2)
- Block building and rushing while spectating the opponent's board;
the PiP then shows your own field instead
- Clarify duel-mode descriptions in lobby and start screen, add hints
in the multiplayer bar
- Replace previous announcement banners so only one shows at a time
