refactor: 重构目录结构 - 简化层级

backend/app/backend.py

@@ -14,18 +14,18 @@ from fastapi import FastAPI, HTTPException, WebSocket, WebSocketDisconnect, Depe
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import StreamingResponse
 from pydantic import BaseModel
-from langgraph.checkpoint.postgres.aio import AsyncPostgresSaver
+from app.main_graph.checkpoint.postgres.aio import AsyncPostgresSaver
 from .agent.service import AIAgentService
 from .agent.history import ThreadHistoryService
-from .agent_subgraphs.common.human_review import (
+from app.core.human_review import (
     ReviewManager,
     InMemoryReviewStore,
     ReviewStatus,
     HumanReview
 )
-from .agent_subgraphs.contact.api_client import ContactAPIClient
-from .agent_subgraphs.dictionary.api_client import DictionaryAPIClient
-from .agent_subgraphs.news_analysis.api_client import NewsAPIClient
+from app.subgraphs.contact.api_client import ContactAPIClient
+from app.subgraphs.dictionary.api_client import DictionaryAPIClient
+from app.subgraphs.news_analysis.api_client import NewsAPIClient
 from .db.init_db import init_subgraph_tables
 from .db.models import ContactRepository, DictionaryRepository, NewsRepository
 from .logger import info, error