- Backend now emits playback:state events every 250ms when state changes
- PlayerStore uses listen() instead of setInterval for real-time updates
- Added Vitest testing framework with mocked Tauri APIs
- Added 53 unit tests for playerStore and queueStore
- Add tauri-plugin-clipboard-manager for reliable clipboard access
- Replace browser clipboard API with Tauri plugin
- Improve error messages in share functions to be more specific
- Add loading indicator for Song.link fetch
- Add svelte-i18n dependency
- Create i18n configuration with locale persistence
- Add complete translation files for EN and ES
- Create root layout with theme CSS variables
- Support 4 themes: dark (default), light, oled, warm
- Add global styles and spacing system