during play -- 'you win' alone (just crossed 2048; will auto-hide after 3 more moves).
endgame -- 'game over' (neutral) + 'you lost' (never reached 2048).
endgame -- 'game over' + 'you win' (won, then ran out of moves).
post-win hide -- click the scenarios top to bottom. WC state is per-instance and sticky; reload the page to restart.
start -- mid-game without a 2048. no badges.
win -- a 2048 lands on the board. 'you win!' appears.
+1 move post-win -- badge still visible.
+2 moves post-win -- badge still visible.
+3 moves post-win -- badge hides; play continues badge-free.
no moves left -- both badges show: 'game over' + 'you win'.