chore: add sounddevice dependency for audio processing

- Included the 'sounddevice' library in the project dependencies to enhance audio handling capabilities.
- This addition supports improved audio input/output functionalities within the application.

All quality checks pass.

pyproject.toml

@@ -31,6 +31,7 @@ dependencies = [
     "types-psutil>=7.2.0.20251228",
     # Structured logging
     "structlog>=24.0",
+    "sounddevice>=0.5.3",
 ]
 
 [project.optional-dependencies]