Update documentation and dependencies for MeshCore Open

- Replaced sqflite with shared_preferences for local key-value storage in README.md
- Updated gradle.properties to include builtInKotlin and newDsl flags
- Enhanced translation feature documentation in additional-features.md
- Modified BLE protocol documentation to include new command and response codes in ble-protocol.md
- Clarified channel management details in channels.md
- Improved chat and messaging documentation, including message path viewing and translation options in chat-and-messaging.md
- Updated contacts management details in contacts.md
- Revised map and location documentation for inferred locations and user interface changes in map-and-location.md
- Adjusted navigation flow in navigation.md to reflect changes in screen transitions
- Updated notification system details in notifications.md
- Enhanced repeater management documentation in repeater-management.md
- Clarified scanner and connection process in scanner-and-connection.md
- Reorganized settings documentation for better clarity and added new node and location settings in settings.md

documentation/additional-features.md

@@ -198,6 +198,7 @@ Tap the translate button on any received message. On first use, the GGUF model f
 
 ### How It Works
 - Model files are managed by `TranslationFileStore`; download progress is shown in-place
+- Before translating, the source language is automatically detected using the `flutter_langdetect` package. If the detected language already matches the target language, translation is skipped
 - Translation runs via `TranslationService` using the llamadart CPU backend (arm64 and x64 on Android)
 - Translated text is shown in `TranslatedMessageContent` as an inline overlay on the original message bubble
 - Each translation is cached; re-tapping shows the cached result without re-running inference