feat: code quality audit + autoresearch integration + infra hardening (#150)

tests/integrations/test_voice_tts_functional.py

@@ -4,7 +4,7 @@ pyttsx3 is not available in CI, so all tests mock the engine.
 """
 
 import threading
-from unittest.mock import patch, MagicMock, PropertyMock
+from unittest.mock import MagicMock, PropertyMock, patch
 
 import pytest
 
@@ -29,6 +29,7 @@ class TestVoiceTTS:
         """When pyttsx3 import fails, VoiceTTS degrades gracefully."""
         with patch.dict("sys.modules", {"pyttsx3": None}):
             from importlib import reload
+
             import timmy_serve.voice_tts as mod
 
             tts = mod.VoiceTTS.__new__(mod.VoiceTTS)