fix:修改客服agent的意图识别

service/customer_agent/chat.py

@@ -54,19 +54,28 @@ class AnonymousCustomerAgent:
 
         intent = await _maybe_await(self.intent_recognize(query))
         sources = []
-        if intent is Intent.GUIDE_PURCHASE:
+        if intent == Intent.GUIDE_PURCHASE:
             answer = await _config(
                 self.config_getter,
                 "agent.customer.template.guide_purchase",
                 "请前往开户页面办理。",
             )
-        elif intent is Intent.WANT_ADVISOR:
+        elif intent == Intent.WANT_ADVISOR:
             answer = await _config(
                 self.config_getter,
                 "agent.customer.template.guide_advisor",
                 "如需基金推荐，请联系投资顾问。",
             )
-        elif intent is Intent.KNOWLEDGE_QA:
+        elif intent == Intent.OFF_TOPIC:
+            answer = await _config(
+                self.config_getter,
+                "agent.customer.template.off_topic",
+                "我是华夏科技的智能客服，只能解答基金与公司业务相关的问题，"
+                "您可以问我基金知识、开户流程或公司信息～",
+            )
+        elif intent == Intent.CHITCHAT:
+            answer = await self._chitchat(session_id)
+        elif intent in (Intent.KNOWLEDGE_QA, Intent.COMPANY_INFO):
             try:
                 sources = await _maybe_await(self.rag_retrieve(query, None))
             except Exception:
@@ -112,6 +121,31 @@ class AnonymousCustomerAgent:
             "trace_id": trace_id,
         }
 
+    async def _chitchat(self, session_id: str) -> str:
+        """带对话历史调用 LLM 做受限闲聊，失败时退回固定话术。"""
+        messages = await self.context.get(session_id)
+        prompt = [
+            {
+                "role": "system",
+                "content": (
+                    "你是华夏科技（基金代销金融机构）的智能客服助手。"
+                    "用户正在与你寒暄，请用一两句话简短、友好地回应，"
+                    "并自然地引导用户咨询基金知识、开户流程或公司信息。"
+                    "不得推荐任何基金产品，不得谈论具体收益，不得回答金融之外的实质性问题。"
+                ),
+            },
+            *messages,
+        ]
+        try:
+            return await _maybe_await(self.generate_answer(prompt))
+        except Exception:
+            return await _config(
+                self.config_getter,
+                "agent.customer.template.chitchat_fallback",
+                "您好，我是华夏科技的智能客服，很高兴为您服务！"
+                "您可以问我基金知识、开户流程或公司信息～",
+            )
+
     @staticmethod
     def _contains_sensitive_input(query: str) -> bool:
         return bool(