Add interactive difficulty selection when game is idle:
Example App Changes:
- example/src/App.tsx: Add difficulty state and radio group
- Import useState and Difficulty type
- Radio buttons for Easy/Medium/Hard
- Only visible when gameStatus === 'waiting'
- Updates difficulty state on selection
- Passes selected difficulty to useGame
Core Changes:
- src/useGame.ts: Respect difficulty changes
- Add difficulty to useEffect dependencies
- Regenerates board when difficulty changes
UX Flow:
1. User sees difficulty selector on idle screen
2. Selects difficulty (easy/medium/hard)
3. Presses Space to start
4. Puzzle generated with selected difficulty
5. On quit, returns to selector with last selection
Cell Counts:
- Easy: 40 empty cells (~41 givens)
- Medium: 50 empty cells (~31 givens)
- Hard: 60 empty cells (~21 givens)
pastilhas
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