fix(import): 修正导入路径以确保正确引用 StreamPriority

src/chat/message_manager/distribution_manager.py

@@ -7,7 +7,7 @@ import asyncio
 import time
 from typing import Any
 
-from chat.message_manager.adaptive_stream_manager import StreamPriority
+from src.chat.message_manager.adaptive_stream_manager import StreamPriority
 from src.chat.chatter_manager import ChatterManager
 from src.chat.energy_system import energy_manager
 from src.common.data_models.message_manager_data_model import StreamContext