Update for iOS, macOS

[New Feature] On-Device AI Model: Deployed a completely new on-device AI model.

[New Feature] New AI Tasks: Offline Translation and Grammar are now supported.

[New Feature] New Language Support: Added support for Portuguese and Spanish (Mexico).

[New Feature] FLAC Format Support: You can now import and process FLAC lossless audio files.

[Enhancement] Speech Recognition: Improved the accuracy and robustness of the speech recognition engine.

[Enhancement] Compatibility & UI: Updated to the new iOS 26 Liquid Glass design, with adjustments to various UI elements and text.

[Fix] Fixed several known issues and improved overall app stability.