- Replace generic sci-fi sounds with gem-themed audio (match, chain, drop, big drop)
- Add context-aware match sounds based on special gems (hyper, flame) and match size
- Improve Yatzi dice roll with bezier curve trajectories, rotation, and bounce
- Restructure dice rendering to use containers for consistent transforms
- Add new gem sound assets and SFX constants
- Rename game from "Yatzi" to "Zahtzee" across UI and server registry
- Move game category from tabletop to cards
- Persist last selected menu category using _lastCategory
- Update game-icons asset files
- Introduce `MusicPlayer` class for in-game music with shuffle, skip, and mute controls
- Add `MenuMusic` utility for background music in menu scenes
- Load music tracks and metadata via `music.json`
- Implement drag-and-drop for SkipBo cards with visual feedback
- Add card flight animations for Phase 10 AI actions and player draws
- Update Phase 10 AI turn timing and reduce delays for smoother gameplay
- Introduce `Sounds.js` utility and load new audio assets (dice, cards, chips, casino).
- Play appropriate sound effects in Backgammon, Blackjack, Holdem, Parchisi, Phase10, SkipBo, and Yatzi.
- Add `background-casino.png` and `background-room.png` to PreloadScene.
- Update OpponentSelectScene with new backgrounds, styled title/subtitle pills, and improved Start/Back buttons.
- Enhance opponent selection with gradient backgrounds and shadows via `applyOpponentStyle`.
- Implement `highlightTile` for better visual feedback in option selectors.
- Randomly select a card back for card games in OpponentSelectScene.
Brian Fertig