- Use useId() instead of Math.random() for stable ID generation in Checkbox and Switch
- Use deterministic rotation/delay calculations instead of Math.random() in CategoryGrid and ProblemSection
- Add eslint-disable comments for intentional setState in useEffect patterns:
- Hydration safety (setMounted)
- Initial localStorage sync
- Route-based UI sync
- Controlled component sync
- Browser API initial sync (scroll position, media queries)
- Add eslint-disable for ref merging pattern in AnimatedCounter and StatCard
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
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