feat: 支持工作流插件复用与试运行

- 新增工作流插件类型、发布快照同步、实时可用性与下线影响检查

- 收口绑定候选、分类权限、间接环路校验与运行态优雅降级

- 补齐管理端工作流插件配置、详情与试运行界面及定向测试

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

@@ -605,9 +605,25 @@ function handlePluginNodeUpdate(chooseId: any) {
     })
     .then((res) => {
       pageLoading.value = false;
-      updatePluginNode.value(res.data);
+      updatePluginNode.value(decoratePluginNodeData(res.data));
     });
 }
+function decoratePluginNodeData(data: any) {
+  if (!data || Number(data.pluginType || 1) !== 2) {
+    return data;
+  }
+  const statusText =
+    data.available === false
+      ? data.reasonMessage || $t('plugin.workflowPluginUnavailable')
+      : $t('plugin.workflowSnapshotSynced');
+  return {
+    ...data,
+    pluginName: data.pluginName
+      ? `${data.pluginName} · ${statusText}`
+      : statusText,
+    pluginStatusText: statusText,
+  };
+}
 function onAsyncExecute(info: any) {
   chainInfo.value = info;
 }
@@ -628,7 +644,7 @@ function onAsyncExecute(info: any) {
       :title="$t('menus.ai.plugin')"
       width="730"
       ref="pluginSelectRef"
-      page-url="/api/v1/plugin/page"
+      page-url="/api/v1/plugin/page?availableOnly=true"
       :has-parent="true"
       single-select
       @get-data="(v) => handleChoose(nodeNames.pluginNode, v)"