Develop - Fix and improve networking, improve edge-to-edge and more

[sameerasw]

This pull request introduces several improvements and refactorings focused on UI edge-to-edge support, BLE connection handling, and image decoding efficiency. The most significant changes are grouped below:

UI and Edge-to-Edge Support:

• Replaced manual system bar handling in MainActivity with the modern enableEdgeToEdge() API for improved edge-to-edge experience and compatibility on Android 15+. Also removed explicit transparent system bar colors from both themes.xml and themes-night.xml, delegating system bar styling to the new API. [1] [2] [3] [4] [5]
• Removed the forced portrait orientation from QRScannerActivity in AndroidManifest.xml, allowing more flexible screen orientation.

BLE Connection Handling:

• Improved BLE advertising logic in BleConnectionManager and BleGattServer to better manage advertising state, especially after disconnections and based on user settings. Now, BLE advertising resumes appropriately if enabled and the server is available, and logging is more descriptive. [1] [2] [3]

Image Decoding and Performance:

• Optimized image loading in ContactPhotoUtil and MacDeviceStatusManager by downsampling large images during decoding, reducing memory usage and improving performance. Target sizes are now enforced (256px for contacts, 512px for device status). [1] [2]

Other:

• Updated the app versionCode to 32 in build.gradle.kts for release tracking.

These changes collectively modernize the UI experience, improve BLE reliability, and optimize image handling for better performance.