- Add custom i18n infrastructure with TypeScript support
- Support Chinese (zh-CN) and English (en-US) languages
- Implement language switching with localStorage persistence
- Update all components with translation keys:
* System info components (board-info-panel, board-index)
* Display management components (display-state-index, display-state-card)
* LED strip configuration components (led-strip-configuration, led-count-control-panel)
* White balance component with detailed usage instructions
* LED test component with test pattern descriptions
- Add comprehensive translation coverage for:
* Navigation menus and page titles
* Common UI elements (buttons, status, actions)
* Hardware information and connection status
* Display configuration options
* LED strip settings and controls
* White balance adjustment instructions and tips
* LED test modes and descriptions
* Error messages and status indicators
- Features:
* Dynamic language switching without app restart
* Type-safe translation keys with full TypeScript support
* Modular design for easy language extension
* Responsive UI updates using SolidJS reactivity