Fix logging

src/reachy_mini_conversation_demo/camera_worker.py

@@ -229,7 +229,7 @@ class CameraWorker:
                 time.sleep(0.01)
 
             except Exception as e:
-                logger.exception(f"Camera worker error: {e}")
+                logger.error(f"Camera worker error: {e}")
                 time.sleep(0.1)  # Longer sleep on error
 
         logger.debug("Camera worker thread exited")

src/reachy_mini_conversation_demo/openai_realtime.py

@@ -147,7 +147,7 @@ class OpenaiRealtimeHandler(AsyncStreamHandler):
                         logger.debug("Tool '%s' executed successfully", tool_name)
                         logger.debug("Tool result: %s", tool_result)
                     except Exception as e:
-                        logger.exception("Tool '%s' failed", tool_name)
+                        logger.error("Tool '%s' failed", tool_name)
                         tool_result = {"error": str(e)}
 
                     # send the tool result back