feat(memory): integrate Mem0 for enhanced conversational memory

api/main.py

@@ -25,8 +25,8 @@ class ChatResponse(BaseModel):
 
 # 创建 FastAPI 应用
 app = FastAPI(
-    title="Haystack RAG API",
-    description="基于 Haystack 的 RAG 聊天服务 API",
+    title="Mem0 Memory API",
+    description="基于 Mem0 的记忆增强聊天服务 API",
     version="1.0.0"
 )
 
@@ -43,7 +43,7 @@ async def startup_event():
 @app.get("/")
 async def root():
     """根路径，返回 API 信息"""
-    return {"message": "Haystack RAG API is running", "version": "1.0.0"}
+    return {"message": "Mem0 Memory API is running", "version": "1.0.0"}
 
 
 @app.get("/health")