fix: 懒加载单例以修复环境变量加载问题

src/chat/heart_flow/utils_chat.py

@@ -1,7 +1,7 @@
 from typing import Optional, Tuple, Dict
 from src.common.logger import get_logger
-from src.chat.message_receive.chat_stream import chat_manager
-from src.person_info.person_info import person_info_manager, PersonInfoManager
+from src.chat.message_receive.chat_stream import get_chat_manager
+from src.person_info.person_info import PersonInfoManager, get_person_info_manager
 
 logger = get_logger("heartflow_utils")
 
@@ -23,7 +23,7 @@ def get_chat_type_and_target_info(chat_id: str) -> Tuple[bool, Optional[Dict]]:
     chat_target_info = None
 
     try:
-        chat_stream = chat_manager.get_stream(chat_id)
+        chat_stream = get_chat_manager().get_stream(chat_id)
 
         if chat_stream:
             if chat_stream.group_info:
@@ -51,6 +51,7 @@ def get_chat_type_and_target_info(chat_id: str) -> Tuple[bool, Optional[Dict]]:
                     person_name = None
                     if person_id:
                         # get_value is async, so await it directly
+                        person_info_manager = get_person_info_manager()
                         person_name = person_info_manager.get_value_sync(person_id, "person_name")
 
                     target_info["person_id"] = person_id