feat:更新智能体工具

services.py

@@ -12,12 +12,10 @@ async def query_bill_agent(query: QueryRequest):
         print(query)
         today = datetime.today().strftime("%Y-%m-%d")
 
-        date_content = (
-            f"[当前系统日期: {today}]\n\n"
-            f"{query.message}"
-        )
-
-        messages: list[BaseMessage] = [HumanMessage(content=date_content)]
+        messages: list[BaseMessage] = [
+            SystemMessage(content=f"当前系统日期：{today}"),
+            HumanMessage(content=query.message),
+        ]
 
         if query.platform == "mobile":
             messages.insert(0, SystemMessage(content=mobile_prompt))