Implement High Score System and Display#96

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Copilot wants to merge 3 commits intodevelopfrom

copilot/implement-high-score-system

Commits on Oct 20, 2025

Initial plan
Copilot
committed
Implement high score storage and display system

Copilot
and
dmccoystephenson
committed
Address code review feedback - add caching, fix equality, improve cross-platform compatibility

Copilot
and
dmccoystephenson
committed