feat: 工作流适配数据中枢查询节点

- 新增查询数据与写入数据节点并移除旧数据中心节点入口

- 将查询数据节点切换为连接服务加 SQL 的执行模型

- 同步更新工作流校验、提示词上下文与设计器交互

easyflow-api/easyflow-api-public/src/main/java/tech/easyflow/publicapi/controller/PublicWorkflowController.java

@@ -13,6 +13,7 @@ import tech.easyflow.ai.easyagentsflow.entity.NodeInfo;
 import tech.easyflow.ai.easyagentsflow.entity.WorkflowCheckStage;
 import tech.easyflow.ai.easyagentsflow.service.TinyFlowService;
 import tech.easyflow.ai.easyagentsflow.service.WorkflowCheckService;
+import tech.easyflow.ai.easyagentsflow.service.WorkflowDatacenterContentService;
 import tech.easyflow.ai.entity.Workflow;
 import tech.easyflow.ai.service.WorkflowService;
 import tech.easyflow.common.domain.Result;
@@ -40,6 +41,8 @@ public class PublicWorkflowController {
     private TinyFlowService tinyFlowService;
     @Resource
     private WorkflowCheckService workflowCheckService;
+    @Resource
+    private WorkflowDatacenterContentService workflowDatacenterContentService;
 
     /**
      * 通过id或别名获取工作流详情
@@ -123,7 +126,7 @@ public class PublicWorkflowController {
         }
         workflowCheckService.checkOrThrow(workflow.getContent(), WorkflowCheckStage.PRE_EXECUTE, workflow.getId());
 
-        ChainDefinition definition = chainParser.parse(workflow.getContent());
+        ChainDefinition definition = chainParser.parse(workflowDatacenterContentService.prepareContent(workflow.getContent()));
         if (definition == null) {
             return Result.fail(2, "节点配置错误，请检查! ");
         }