- Introduce animated intro sequence, player role intros, and deck count displays.
- Replace direct treasure giving with a new Trade Modal for swapping cards between players.
- Add smooth Phaser animations for pawn movement, shore-ups, flood/treasure card draws, and card swaps.
- Improve state management during animations using immutable cloning and peek functions (`peekFloodDraw`, `peekTreasureDraw`).
- Update role definitions with detailed descriptions and remove 'messenger' from `ROLE_KEYS`.
- Change default difficulty to 'novice'.
