- overhaul word search game UI with responsive grid design

- implement touch/mouse selection with directional guides
- add difficulty levels (easy, medium, hard) with different grid sizes
- integrate AI word generation based on themes and categories
- add game state persistence with localStorage
- implement scoring system and timer functionality
- add visual feedback for word selection and completion
- create hint system with penalty for usage
- add confetti animation on word discovery
- improve mobile responsiveness with adaptive cell sizing

Author: TobiasMue91