- Add fromPlayer param to animatePlacement (top for opponent, bottom for me)
- Rewrite buildLayout with semantic .dg-* class structure
- Full CSS for opponent bar, score ribbon, controls, board area
- Opponent back-tiles visual with removal animations
- Bot thinking indicator in opponent meta area
- Remove dead legacy DOM elements
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>