[nightshift] lint-fix: automated lint fixes

[nightshift-micr]

Automated by Nightshift v3 (GLM 5.1).

Task: lint-fix
Category: pr
Changes: Fixed 5 ESLint errors in components/skiper/skiper80.tsx:

1. react-hooks/refs (2 occurrences): Replaced render-time loadedImagesRef.current read with a loadedImages state variable (Set<string>), keeping the ref for callback-side checks.
2. react-hooks/set-state-in-effect (3 occurrences): Wrapped synchronous state setters in requestAnimationFrame to avoid cascading renders during useEffect execution.

ESLint passes clean (0 errors), TypeScript compiles without errors.

Merge if useful, close if not.

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