- ThemeContext gains a 'system' theme that follows prefers-color-scheme and
updates live when the OS flips; exposes resolvedTheme (consumed by Sonner) and
keeps the <meta theme-color> in sync. Pre-bundle inline script in index.html
prevents a light/dark flash. Both theme selectors (Settings ThemeCards +
theme-toggle dropdown) gain the System option.
- New MotionPreferenceContext mounts framer-motion <MotionConfig>; a Reduce-motion
toggle (localStorage device pref) forces reducedMotion="always" (else "user",
which still respects the OS).
- Add an accessible SettingHelp tooltip (focusable button + aria-label) wrapped by
a page-level TooltipProvider; used for the System + Reduce-motion explanations.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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