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🎨 Palette: Fix theme switching FOUC and system sync#18

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palette/fix-theme-switching-fouc-6979373894842431681
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🎨 Palette: Fix theme switching FOUC and system sync#18
APPLEPIE6969 wants to merge 1 commit intomainfrom
palette/fix-theme-switching-fouc-6979373894842431681

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@APPLEPIE6969
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💡 What: Added an anti-FOUC script to app/layout.tsx and improved ThemeProvider to sync with system preferences.
🎯 Why: To prevent the "Flash of Unstyled Content" (light mode flash) when reloading in dark mode, and to ensure the theme switch works reliably between standard light mode and dark mode (#000000).
📸 Before/After: Verified via Playwright script that dark mode persists and applies correctly without hydration mismatch.
♿ Accessibility: Reduces visual flashing which can be jarring for users, and respects system preferences dynamically.


PR created automatically by Jules for task 6979373894842431681 started by @APPLEPIE6969

- Add inline script to app/layout.tsx to apply theme class before hydration
- Add suppressHydrationWarning to html tag
- Update ThemeProvider to respect system preference changes dynamically
- Refactor localStorage logic to avoid overwriting system preference on mount

Co-authored-by: APPLEPIE6969 <242827480+APPLEPIE6969@users.noreply.github.com>
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vercel bot commented Feb 21, 2026

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