修复`PerformanceLogMixin`中的音频记录逻辑

- 将`sf.write`方法中的音频源从`voice_task.audio`更改为`voice_task.user_voice`，确保正确记录用户的声音。
- 在`ASRWorker`类中，恢复`log_task_user_question`方法的调用，以记录用户提问。

src/voice_dialogue/services/mixins.py

@@ -104,4 +104,4 @@ class PerformanceLogMixin:
 
         import soundfile as sf
         output_filename = output_path / (voice_task.id + ".wav")
-        sf.write(output_filename.as_posix(), voice_task.audio, 16000, subtype="PCM_16")
+        sf.write(output_filename.as_posix(), voice_task.user_voice, 16000, subtype="PCM_16")

src/voice_dialogue/services/speech/recognizer.py

@@ -38,7 +38,6 @@ class ASRWorker(BaseThread, PerformanceLogMixin):
             except Empty:
                 continue
 
-            self.log_task_user_question(voice_task)
 
             voice_task.language = self.language
             voice_task.whisper_start_time = time.time()
@@ -48,6 +47,8 @@ class ASRWorker(BaseThread, PerformanceLogMixin):
             if not transcribed_text.strip():
                 voice_state_manager.reset_task_id()
                 continue
+                
+            self.log_task_user_question(voice_task)
 
             voice_task.whisper_end_time = time.time()