- Animate card draws, plays, and row refills with smooth flight transitions
and mid-flight reveal flips during initial deal
- Introduce slot helper methods for consistent card positioning across
renderers and animations
- Show opponent hand as face-down fan with visible draw/discard pile counts
- Track pending card UIDs to prevent rendering cards mid-animation
- Support game-specific default playfields via gamesRegistry
- Add guardFreshButton to prevent accidental clicks from pointer event bubbling
- Add Starscape and Fantasy playfields; set Starscape as default for Star Wars
