fix: 统一适配 DeepSeek 工具与思考历史回传

- 结构化持久化 assistant/tool 历史，恢复真实消息链回放

- 为 DeepSeek 显式开启 thinking 协议配置，并补齐 public-api 与工具英文名兜底

- 增加聊天历史回放、tool 名称与请求参数解析相关测试

easyflow-modules/easyflow-module-chatlog/src/main/java/tech/easyflow/chatlog/service/impl/ChatlogRuntimeListener.java

@@ -9,6 +9,7 @@ import tech.easyflow.chatlog.domain.dto.ChatMessageRecord;
 import tech.easyflow.chatlog.service.ChatPersistDispatcher;
 import tech.easyflow.chatlog.service.ChatSessionQueryService;
 import tech.easyflow.common.web.exceptions.BusinessException;
+import tech.easyflow.core.runtime.ChatRuntimeHistoryPayloadHelper;
 import tech.easyflow.core.runtime.ChatRuntimeContext;
 import tech.easyflow.core.runtime.ChatRuntimeListener;
 import tech.easyflow.core.runtime.ChatRuntimeMessage;
@@ -81,7 +82,8 @@ public class ChatlogRuntimeListener implements ChatRuntimeListener {
         Collections.reverse(records);
         List<ChatRuntimeMessage> messages = new ArrayList<>(records.size());
         for (ChatMessageRecord record : records) {
-            if (record.getContentText() == null || record.getContentText().isBlank()) {
+            if ((record.getContentText() == null || record.getContentText().isBlank())
+                    && !ChatRuntimeHistoryPayloadHelper.hasStructuredHistory(record.getContentPayload())) {
                 continue;
             }
             ChatRuntimeMessage message = new ChatRuntimeMessage();