修改引用逻辑，修改长期记忆bug

rag_indexer/index_builder.py

@@ -8,24 +8,21 @@ import asyncio
 import logging
 from dataclasses import dataclass, field
 from pathlib import Path
-from typing import List, Union, Optional, Any, Dict, Tuple
+from typing import List, Union, Optional, Any, Dict
 
 from httpx import RemoteProtocolError
 from langchain_core.documents import Document
 from langchain_core.embeddings import Embeddings
 from langchain_core.stores import BaseStore
 from langchain_text_splitters import RecursiveCharacterTextSplitter, TextSplitter
-from langchain_classic.retrievers import ParentDocumentRetriever
 from qdrant_client.http.exceptions import ResponseHandlingException
 
-from .loaders import DocumentLoader
-from .splitters import SplitterType, get_splitter, SemanticChunkerAdapter
+from rag_indexer.loaders import DocumentLoader
+from rag_indexer.splitters import SplitterType, get_splitter
 from rag_core import LlamaCppEmbedder, QdrantVectorStore, create_docstore, create_parent_retriever
 
-
 logger = logging.getLogger(__name__)
 
-
 # ---------- 配置数据类 ----------
 @dataclass
 class DocstoreConfig:
@@ -36,7 +33,6 @@ class DocstoreConfig:
     # 若要从外部注入已创建好的 docstore，可直接设置此字段
     instance: Optional[BaseStore] = None
 
-
 @dataclass
 class IndexBuilderConfig:
     """索引构建器配置。"""
@@ -60,7 +56,6 @@ class IndexBuilderConfig:
     # 其他切分器参数（当 splitter_type 非父子块时使用）
     extra_splitter_kwargs: Dict[str, Any] = field(default_factory=dict)
 
-
 # ---------- 索引构建器 ----------
 class IndexBuilder:
     """RAG 索引构建主流水线，支持单块切分与父子块切分。"""