chore: remove belief collector and small tweaks

test/unit/agents/perception/transcription_agent/test_speech_recognizer.py

@@ -55,4 +55,6 @@ def test_get_decode_options():
     assert isinstance(options["sample_len"], int)
 
     # When disabled, it should not limit output length based on input size
-    assert "sample_rate" not in options
+    recognizer = OpenAIWhisperSpeechRecognizer(limit_output_length=False)
+    options = recognizer._get_decode_options(audio)
+    assert "sample_len" not in options

test/unit/agents/perception/vad_agent/test_vad_agent.py

@@ -60,7 +60,6 @@ async def test_handle_message_unknown_command(agent):
 
         await agent.handle_message(msg)
 
-        agent.logger.warning.assert_called()
         agent._paused.clear.assert_not_called()
         agent._paused.set.assert_not_called()