This update adds:
1. A custom keyboard extension for outgoing message translation.
2. A share/action extension for translating user-selected incoming text.

To test the keyboard:
- Install the app on device.
- Go to Settings > General > Keyboard > Keyboards > Add New Keyboard.
- Add “TranslatorKeyboard”.
- If testing cloud translation, enable “Allow Full Access”.

To test incoming translation:
- In an app that exposes selected/shared text, select text and open the share/action sheet.
- Choose “Translate Incoming”.

The app does not read messages from WhatsApp or other apps in the background. Incoming translation is only user-invoked through iOS extension surfaces.