- Create GameResultsService for storing game results in localStorage
- Create gameResultsStore Svelte store for reactive data access
- Add Leaderboard component showing top 20 scores
- Add leaderboard route and navigation link
- Record game results on victory/death/stranded (not manual exits)
- Fix header visibility when exiting game
- Fix camera error by stopping render loop after cleanup
- Clear canvas after cleanup to prevent last frame showing
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Co-Authored-By: Claude <noreply@anthropic.com>
