chore: making tests pass after merge

I had to make use of monkeypatch to simulate using the config file

ref: N25B-236

test/unit/agents/transcription/test_speech_recognizer.py

@@ -1,4 +1,5 @@
 import numpy as np
+import pytest
 
 from control_backend.agents.transcription.speech_recognizer import (
     OpenAIWhisperSpeechRecognizer,
@@ -6,6 +7,24 @@ from control_backend.agents.transcription.speech_recognizer import (
 )
 
 
+@pytest.fixture(autouse=True)
+def patch_sr_settings(monkeypatch):
+    # Patch the *module-local* settings that SpeechRecognizer imported
+    from control_backend.agents.transcription import speech_recognizer as sr
+
+    # Provide real numbers for everything _estimate_max_tokens() reads
+    monkeypatch.setattr(sr.settings.vad_settings, "sample_rate_hz", 16_000, raising=False)
+    monkeypatch.setattr(
+        sr.settings.behaviour_settings, "transcription_words_per_minute", 450, raising=False
+    )
+    monkeypatch.setattr(
+        sr.settings.behaviour_settings, "transcription_words_per_token", 0.75, raising=False
+    )
+    monkeypatch.setattr(
+        sr.settings.behaviour_settings, "transcription_token_buffer", 10, raising=False
+    )
+
+
 def test_estimate_max_tokens():
     """Inputting one minute of audio, assuming 450 words per minute and adding a 10 token padding,
     expecting 610 tokens."""