Refactor BlizzardScene for safety and maintainability#3

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gradigit wants to merge 2 commits intomainfrom

refactor-blizzard-scene-16307089611453078204

Commits on Feb 9, 2026

Refactor BlizzardScene to remove implicitly unwrapped optionals and magic numbers.

google-labs-jules[bot]
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gradigit
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Fix BlizzardSceneTests CI failure by relaxing color equality check.

google-labs-jules[bot]
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gradigit
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