remove ruff

vibe_bot/llama_wrapper.py

@@ -291,4 +291,4 @@ def embedding(
         raw = json.loads(raw)
     if not isinstance(raw, list):
         raw = list(raw)
-    return raw
+    return list[float](raw)

vibe_bot/tests/test_main.py

@@ -433,10 +433,12 @@ def test_speak_plain_with_mock_tts(
 
     asyncio.run(main_module._speak_plain(mock_ctx, "hello world", mock_tts_engine))
 
+    from vibe_bot.config import TTS_SPEED, TTS_VOICE
+
     mock_tts_engine.generate_audio.assert_called_once_with(
         "hello world",
-        voice=main_module.TTS_VOICE,  # type: ignore[attr-defined]
-        speed=main_module.TTS_SPEED,  # type: ignore[attr-defined]
+        voice=TTS_VOICE,
+        speed=TTS_SPEED,
     )
     assert mock_ctx.send.call_count >= 2