v3.6.0

Lets Bend v3.6.0

• Upgraded to Java 21 for improved performance and modern language features
• Enhanced edge-to-edge support for Android 15+
• Fixed OutOfMemoryError in audio pitch detection on Android
• Fixed NullPointerException in note display during view transitions
• Improved null-safety and stability fixes for note display
• Code quality improvements: Google Java Format, Error Prone, and JaCoCo coverage
• Android Lint warnings reduced from 114 to 11
• Updated all dependencies to latest versions (compileSdk/targetSdk 36)