Fix turn completion mixin not resetting state after each LLM response

src/pipecat/turns/user_turn_completion_mixin.py

@@ -332,14 +332,25 @@ class UserTurnCompletionLLMServiceMixin:
         if isinstance(frame, InterruptionFrame):
             await self._cancel_incomplete_timeout()
             await self._turn_reset()
-        # Reset turn state at end of LLM response (but don't cancel timeout -
-        # incomplete timeouts should continue running)
-        elif isinstance(frame, LLMFullResponseEndFrame):
-            await self._turn_reset()
 
         # Pass frame to parent
         await super().process_frame(frame, direction)
 
+    async def push_frame(self, frame: Frame, direction: FrameDirection = FrameDirection.DOWNSTREAM):
+        """Push a frame downstream, resetting turn state at end of each LLM response.
+
+        ``LLMFullResponseEndFrame`` is generated by the LLM service itself (pushed,
+        not received), so it must be handled here rather than in ``process_frame``.
+
+        Args:
+            frame: The frame to push downstream.
+            direction: The direction of frame flow. Defaults to downstream.
+        """
+        if isinstance(frame, LLMFullResponseEndFrame):
+            await self._turn_reset()
+
+        await super().push_frame(frame, direction)
+
     async def _push_turn_text(self, text: str):
         """Push LLM text with turn completion detection.