feat：物料存入数据库

app/main.py

@@ -8,6 +8,7 @@ from loguru import logger
 
 from app.api.agent import router
 from app.api.conversations import router as conversation_router
+from app.api.materials import router as material_router
 from app.core.exceptions import register_exception_handlers
 from app.core.logging import setup_logging
 
@@ -19,15 +20,18 @@ async def lifespan(application: FastAPI):
     from app.observability.tracing import flush_tracing
     from app.processor.graph import build_graph
     from app.services.agent import AgentService
+    from app.services.material_mongo import warm_material_cache
     from app.services.persistence import open_persistence
 
     # 按配置选择 MongoDB 或进程内存，会话记录与图检查点使用同一种存储
     persistence = await open_persistence()
     application.state.conversation_store = persistence.store
-    application.state.agent_service = AgentService(
-        build_graph(persistence.checkpointer), persistence.store
-    )
     try:
+        # 物料目录启动时载入内存，agent 规划与前端接口共用，避免重复查询数据库
+        await warm_material_cache(persistence.db)
+        application.state.agent_service = AgentService(
+            build_graph(persistence.checkpointer), persistence.store
+        )
         yield
     finally:
         # 共享客户端只在应用退出时关闭，追踪刷新放到线程避免阻塞事件循环
@@ -50,6 +54,7 @@ def create_app() -> FastAPI:
     # 统一 /api 前缀，方便前端代理和反向代理只配置一条规则
     application.include_router(router, prefix="/api")
     application.include_router(conversation_router, prefix="/api")
+    application.include_router(material_router, prefix="/api")
     return application