修改引用逻辑，修改长期记忆bug

rag_core/store/__init__.py

@@ -15,8 +15,8 @@
 """
 
 
-from .postgres import PostgresDocStore
-from .factory import create_docstore, get_docstore_uri, DEFAULT_DB_URI
+from rag_core.store.postgres import PostgresDocStore
+from rag_core.store.factory import create_docstore, get_docstore_uri, DEFAULT_DB_URI
 
 __version__ = "2.0.0"
 

rag_core/store/factory.py

@@ -9,7 +9,7 @@ import logging
 from typing import Optional, Tuple
 
 from langchain_core.stores import BaseStore
-from .postgres import PostgresDocStore
+from rag_core.store.postgres import PostgresDocStore
 
 logger = logging.getLogger(__name__)
 

rag_core/store/postgres.py

@@ -4,12 +4,10 @@
 使用 asyncpg 实现真正的异步 PostgreSQL 文档存储，支持高并发访问。
 """
 
-from __future__ import annotations
-
 import asyncio
 import json
 import logging
-from typing import List, Dict, Any, Optional, Iterator, Tuple, Sequence, cast
+from typing import List, Dict, Any, Optional, Iterator, Tuple, Sequence
 
 from langchain_core.documents import Document
 from langchain_core.stores import BaseStore
@@ -18,7 +16,6 @@ import asyncpg
 
 logger = logging.getLogger(__name__)
 
-
 class PostgresDocStore(BaseStore[str, Any]):
     """
     异步 PostgreSQL 文档存储实现。