🎨 Palette: Add delete confirmation and improve button accessibility

[Gamepulse]

This PR implements micro-UX and accessibility improvements across the library view:

1. Destructive Action Safety: Added a confirmation dialog to the "Delete Game" action in GameDetail.tsx. Users will now be prompted to confirm before a game is removed from their library.
2. Accessibility (ARIA):
   • Added aria-label and aria-hidden to the "Quick assign platform" buttons (🎮) in GameCard.tsx (all view modes).
   • Added aria-label and aria-hidden to the "Clear executable path" button (✕) in GameDetail.tsx.
   • Added aria-label and aria-hidden to the favorite toggle button in GameDetailHeader.tsx.
3. Build Fix: Removed an unused hasIgdbId state variable in GameScreenshotsCarousel.tsx that caused tsc to fail during the production build.

These changes ensure the application is more accessible to screen reader users and safer for all users when performing permanent actions.

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PR created automatically by Jules for task 14253415800839702215 started by @Gamepulse

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