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-ui-admin/app/src/views/ai/workflow/WorkflowDesign.vue

@@ -20,7 +20,6 @@ import WorkflowForm from '#/views/ai/workflow/components/WorkflowForm.vue';
 import WorkflowSteps from '#/views/ai/workflow/components/WorkflowSteps.vue';
 
 import {getCustomNode} from './customNode/index';
-import nodeNames from './customNode/nodeNames';
 
 import '@tinyflow-ai/vue/dist/index.css';
 
@@ -59,17 +58,35 @@ const codeEngineList = ref<any[]>([
     available: true,
   },
 ]);
+
+function escapeHtmlAttr(value?: string) {
+  return String(value || '')
+    .replaceAll('&', '&amp;')
+    .replaceAll('"', '&quot;')
+    .replaceAll('<', '&lt;')
+    .replaceAll('>', '&gt;');
+}
+
+function buildModelIconMarkup(icon?: string, providerType?: string) {
+  const normalized = String(icon || '').trim();
+  if (normalized) {
+    if (normalized.startsWith('<svg') || normalized.startsWith('<img')) {
+      return normalized;
+    }
+    return `<img src="${escapeHtmlAttr(normalized)}" alt="" style="width:100%; height:100%; object-fit:contain;" />`;
+  }
+  if (!providerType) {
+    return undefined;
+  }
+  return getIconByValue(providerType) || undefined;
+}
+
 const provider = computed(() => ({
   llm: () => llmList.value.map((item: any) => {
-    let iconStr = undefined;
-    if (item.modelProvider?.icon) {
-        iconStr = `<img src="${item.modelProvider.icon}" style="width:100%; height:100%; object-fit:contain;" />`;
-    } else if (item.modelProvider?.providerType) {
-        const svgStr = getIconByValue(item.modelProvider.providerType);
-        if (svgStr) {
-            iconStr = svgStr;
-        }
-    }
+    const iconStr = buildModelIconMarkup(
+      item.modelProvider?.icon,
+      item.modelProvider?.providerType,
+    );
 
     // Extract brand and model name directly from the title if it contains '/'
     let displayTitle = item.title || '';
@@ -330,15 +347,15 @@ async function runCheck(stage: WorkflowCheckStage, silentPass: boolean = false)
       stage,
     });
     checkResult.value = res.data;
+    const issues = Array.isArray(res.data?.issues) ? res.data.issues : [];
+    checkIssuesVisible.value = issues.length > 0;
     if (!res.data?.passed) {
-      checkIssuesVisible.value = true;
       ElMessage.error($t('aiWorkflow.checkFailed'));
       return false;
     }
-    checkIssuesVisible.value = false;
     focusedIssueKey.value = '';
     issueFocusActive.value = false;
-    if (!silentPass) {
+    if (!silentPass && issues.length === 0) {
       ElMessage.success($t('aiWorkflow.checkPassed'));
     }
     return true;