- Move and replace utility files (SafariUtil, SpeechQueue, StringExtensions, TTSManager, VoiceManager)
- Refactor and extend SpeechPlayer components (UI, progress, volume, queue)
- Improved state and EnvironmentObject management (PlayerUIState)
- UI and logic optimizations in menu and tab views
- Remove obsolete and duplicate files
- General code and UX improvements
- Replace @MainActor with Combine framework for TTS functionality
- Create VoiceManager class for voice selection and caching
- Add UserDefaults persistence for selected voice
- Optimize performance with voice caching and immediate UI updates
- Remove @MainActor from TTS-related Use Cases
- Add proper pause/resume delegate methods
- Improve reactive UI updates with @StateObject
- Clean up code and remove unnecessary comments