[ClausValcaTD]

• Added com.google.zxing:core:3.3.3 dependency to app/build.gradle.
• Implemented QRCodeUtils.java helper to generate 250x250 Android Bitmaps from WebSocket URIs (e.g. ws://192.168.1.X:8080).
• Added an ImageView to activity_main.xml layout inside the status overlay.
• Updated MainActivity.java to generate and display the QR code when the server IP is resolved.
• Ensured status overlay with QR code automatically hides when video playback starts and reappears when client disconnects.
• Added QRCodeUtilsTest unit tests.

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PR created automatically by Jules for task 153373678515658552 started by @ClausValcaTD

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