Loads 50 games at a time to fix lag with large datasets.
- Add pagination state (displayedGames, currentPage, allFilteredGames)
- Add loadInitialGames() and loadMoreGames() methods
- Update gamesBySport to use displayedGames
- Add infinite scroll trigger via onAppear on last game
- Add ProgressView indicator when more games available
- Reset pagination when search text changes
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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