fix(theme): resolve SSR hydration mismatch for dark mode#26
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Add blocking inline script in <head> to apply dark class before React hydration, preventing FOUC. Switch theme-dependent UI from JS conditional rendering to CSS-based toggling (dark:block/dark:hidden for icons, CSS custom properties with dark: variant for board column colors). Remove isDark prop and useTheme dependency from BoardLayout. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This was referenced Mar 17, 2026
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Summary
<head>to applydarkclass before React hydration (FOUC prevention)suppressHydrationWarningon<html>to prevent class override during hydrationdark:block/dark:hiddenin AppHeaderisDarkprop + inlinebackgroundColorwith CSS custom properties +dark:bg-[var()]in BoardLayout column headersuseThemedependency from BoardLayoutTest plan
pnpm lint— passespnpm typecheck— passespnpm test— 293 tests passing🤖 Generated with Claude Code