Refactor chat stream handling to use BotChatSession

- Updated imports and references from ChatStream to BotChatSession across multiple files.
- Adjusted method signatures and internal logic to accommodate the new session management.
- Ensured compatibility with existing functionality while improving code clarity and maintainability.

scripts/replyer_action_stats.py

@@ -19,10 +19,10 @@ sys.path.insert(0, project_root)
 
 try:
     from src.common.database.database_model import ChatStreams
-    from src.chat.message_receive.chat_stream import get_chat_manager
+    from src.chat.message_receive.chat_manager import chat_manager as _script_chat_manager
 except ImportError:
     ChatStreams = None
-    get_chat_manager = None
+    _script_chat_manager = None
 
 
 def get_chat_name(chat_id: str) -> str:

scripts/test_memory_retrieval.py

@@ -23,7 +23,7 @@ sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
 from src.common.logger import initialize_logging, get_logger
 from src.common.database.database import db
 from src.common.database.database_model import LLMUsage
-from src.chat.message_receive.chat_stream import ChatStream
+from src.chat.message_receive.chat_manager import BotChatSession
 from maim_message import UserInfo, GroupInfo
 
 logger = get_logger("test_memory_retrieval")