Add comprehensive UX improvements to color playground: **URL State Sharing:** - Implement URL parameter sync for colors - Add share button to copy playground URLs - Wrap in Suspense boundary for Next.js 16 compatibility - Colors persist in URL for easy sharing **Keyboard Shortcuts:** - Create reusable useKeyboard hook with modifier support - Add Cmd/Ctrl+C to copy current color - Add Cmd/Ctrl+S to share color URL - Add Cmd/Ctrl+R for random color generation - Display keyboard hints in playground header - Cross-platform support (Mac/Windows/Linux) **Color History:** - Implement Zustand store with localStorage persistence - Track up to 50 most recent colors with timestamps - Auto-deduplicate and keep most recent entry - Add visual history grid in playground - Click to restore previous colors - Individual color removal with hover UI - Clear all history option **Playground UI Enhancements:** - Add visual keyboard shortcut indicators (⌘C, ⌘S, ⌘R) - Implement Recent Colors section with 5-column grid - Add hover effects for history color swatches - Individual remove buttons on hover - Toast notifications for all actions - Improved button layout and spacing **Files Added:** - lib/hooks/useKeyboard.ts - Keyboard shortcut management - lib/stores/historyStore.ts - Color history with persistence **Files Modified:** - app/playground/page.tsx - Integrated all UX features Successfully builds with all features working. Ready for user testing. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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