Created a comprehensive shared UI component library to eliminate code
duplication across WellNuo apps (main app and WellNuoLite).
## Components Added
- Button (merged features from both apps - icons, 5 variants, shadows)
- Input (with left/right icons, password toggle, error states)
- LoadingSpinner (inline and fullscreen variants)
- ErrorMessage & FullScreenError (with retry/skip/dismiss actions)
- ThemedText & ThemedView (theme-aware utilities)
- ExternalLink (for opening external URLs)
## Design System
- Exported complete theme system (colors, spacing, typography, shadows)
- 73+ color definitions, 7 spacing levels, 8 shadow presets
- Consistent design tokens across all apps
## Infrastructure
- Set up npm workspaces for monorepo support
- Added comprehensive test suite (41 passing tests)
- TypeScript configuration with strict mode
- Jest configuration for testing
- README and migration guide
## Benefits
- Eliminates ~1,500 lines of duplicate code
- Ensures UI consistency across apps
- Single source of truth for design system
- Easier maintenance and updates
- Type-safe component library
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
