fix: 修复会话的 updateTime 为最后一条消息的发送时间

src/main/java/cn/teammodel/service/impl/ChatMessageServiceImpl.java

@@ -22,6 +22,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 
 import javax.annotation.Resource;
+import java.time.Instant;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -65,7 +66,9 @@ public class ChatMessageServiceImpl implements ChatMessageService {
             // 处理完成后的事件: 保存消息记录, 缓存更改
             ChatSession.Message message = ChatSession.Message.of(userPrompt, s);
             HistoryCache.updateContext(sessionId, message);
-            CosmosPatchOperations options = CosmosPatchOperations.create().add("/history/-", message);
+            CosmosPatchOperations options = CosmosPatchOperations.create()
+                    .replace("/updateTime", Instant.now().toEpochMilli())
+                    .add("/history/-", message);
             chatSessionRepository.save(sessionId, PK.of(PK.CHAT_SESSION), ChatSession.class, options);
         });
         // 错误的回调