修改guideline_prompt：只需要列出详细的工具调用步骤即可，不需要考虑回复用户的话术，步骤数量根据实际需求调整。

prompt/guideline_prompt.md

@@ -18,7 +18,7 @@
 - **优先级排序**: 确定任务执行顺序
 
 ### 3. 计划阶段 (Planning)
-- **步骤制定**: 详细的执行步骤，步骤数量根据实际需求调整，每个步骤应具体可执行
+- **步骤制定**: 只需要列出详细的工具调用步骤即可，不需要考虑回复用户的话术，步骤数量根据实际需求调整。
 
 
 ---

routes/chat.py

@@ -57,6 +57,25 @@ def append_user_last_message(messages: list, content: str) -> bool:
         messages[-1]['content'] += content
     return messages
 
+def append_assistant_last_message(messages: list, content: str) -> bool:
+    """向最后一条用户消息追加内容
+
+    Args:
+        messages: 消息列表
+        content: 要追加的内容
+        condition: 可选条件，如果提供则检查消息角色是否匹配此条件
+
+    Returns:
+        bool: 是否成功追加内容
+    """
+    if not messages or len(messages) == 0:
+        return messages
+    last_message = messages[-1]
+    if last_message and last_message.get('role') == 'assistant':
+        messages[-1]['content'] += content
+    else:
+        messages.append({"role":"assistant","content":content})
+    return messages
 
 
 async def process_guidelines_and_terms(
@@ -243,12 +262,12 @@ async def enhanced_generate_stream_response(
 
         # 准备最终的消息
         final_messages = messages.copy()
-        final_messages = append_user_last_message(final_messages, f"\n\nlanguage:{get_language_text(language)}")
-
         if guideline_reasoning:
             # 用###分割guideline_reasoning，取最后一段作为Guidelines
             guidelines_text = guideline_reasoning.split('###')[-1].strip() if guideline_reasoning else ""
-            final_messages = append_user_last_message(final_messages, f"\n\nGuidelines:\n{guidelines_text}\nPlease follow these guidelines step by step.")
+            final_messages = append_assistant_last_message(final_messages, f"language:{get_language_text(language)}\n\nGuidelines:\n{guidelines_text}\n I will follow these guidelines step by step.")
+        else:
+            final_messages = append_assistant_last_message(final_messages, f"\n\nlanguage:{get_language_text(language)}")
 
         # 第三阶段：agent响应流式传输
         logger.info(f"Starting agent stream response")
@@ -359,13 +378,14 @@ async def create_agent_and_generate_response(
 
     # 准备最终的消息
     final_messages = messages.copy()
-    final_messages = append_user_last_message(final_messages, f"\n\nlanguage:{get_language_text(language)}")
     pre_message_list = []
     if guideline_reasoning:
         # 用###分割guideline_reasoning，取最后一段作为Guidelines
         guidelines_text = guideline_reasoning.split('###')[-1].strip() if guideline_reasoning else ""
-        final_messages = append_user_last_message(final_messages, f"\n\nGuidelines:\n{guidelines_text}\nPlease follow these guidelines step by step.")
+        final_messages = append_assistant_last_message(final_messages, f"language:{get_language_text(language)}\n\nGuidelines:\n{guidelines_text}\n I will follow these guidelines step by step.")
         pre_message_list.append({"role": "assistant","reasoning_content": guideline_reasoning+ "\n"})
+    else:
+        final_messages = append_assistant_last_message(final_messages, f"\n\nlanguage:{get_language_text(language)}")
 
     # 非流式响应
     agent_responses = agent.run_nonstream(final_messages)