test: added tests for 100% coverage

ref: N25B-393

src/control_backend/agents/perception/visual_emotion_recognition_agent/visual_emotion_recognition_agent.py

@@ -3,7 +3,6 @@ import json
 import time
 from collections import Counter, defaultdict
 
-import cv2
 import numpy as np
 import zmq
 import zmq.asyncio as azmq
@@ -199,10 +198,10 @@ class VisualEmotionRecognitionAgent(BaseAgent):
         else:
             self.logger.debug(f"Ignoring message from unknown sender: {sender}")
 
-
     async def stop(self):
         """
         Clean up resources used by the agent.
         """
         self.video_in_socket.close()
-        await super().stop()
+        await super().stop()
+        

src/control_backend/agents/user_interrupt/user_interrupt_agent.py

@@ -11,7 +11,6 @@ from control_backend.schemas.belief_message import Belief, BeliefMessage
 from control_backend.schemas.program import ConditionalNorm, Program
 from control_backend.schemas.ri_message import (
     GestureCommand,
-    PauseCommand,
     RIEndpoint,
     SpeechCommand,
 )