增加节点验证。

frontend/src/pages/Workflow/Definition/Designer/index.tsx

@@ -20,6 +20,7 @@ import NodeConfig from './components/NodeConfig';
 import Toolbar from './components/Toolbar';
 import {NodeType, getNodeTypes} from './service';
 import {DeleteOutlined, CopyOutlined, SettingOutlined, ClearOutlined, FullscreenOutlined} from '@ant-design/icons';
+import { validateFlow, hasCycle } from './validate';
 
 const {Sider, Content} = Layout;
 
@@ -99,7 +100,7 @@ const FlowDesigner: React.FC = () => {
             },
             {
                 key: 'config',
-                label: '配置节点',
+                label: '<EFBFBD><EFBFBD><EFBFBD>置节点',
                 icon: <SettingOutlined />,
                 onClick: () => {
                     if (contextMenu.cell && contextMenu.cell.isNode()) {
@@ -247,9 +248,7 @@ const FlowDesigner: React.FC = () => {
                     },
                 },
             },
-            keyboard: {
-                enabled: true,
-            },
+            keyboard: true,
             clipboard: {
                 enabled: true,
             },
@@ -310,7 +309,7 @@ const FlowDesigner: React.FC = () => {
                     minWidth: 1,
                     minHeight: 1,
                     orthogonal: true,
-                    restricted: true,
+                    restrict: true,
                 },
                 rotating: {
                     enabled: true,
@@ -597,7 +596,7 @@ const FlowDesigner: React.FC = () => {
         }
     };
 
-    // 获取详情
+    // 获取<EFBFBD><EFBFBD>情
     const fetchDetail = async () => {
         if (!id) return;
         setLoading(true);
@@ -615,11 +614,34 @@ const FlowDesigner: React.FC = () => {
     const handleSave = async () => {
         if (!id || !detail || !graphRef.current || detail.status !== WorkflowStatus.DRAFT) return;
 
+        // 先进行流程验证
+        const result = validateFlow(graphRef.current);
+        const hasCycleResult = hasCycle(graphRef.current);
+
+        if (hasCycleResult) {
+            result.errors.push('流程图中存在循环依赖');
+            result.valid = false;
+        }
+
+        if (!result.valid) {
+            message.error(
+                <div>
+                    <div>流程验证失败，无法保存：</div>
+                    <ul style={{ marginBottom: 0 }}>
+                        {result.errors.map((error, index) => (
+                            <li key={index}>{error}</li>
+                        ))}
+                    </ul>
+                </div>
+            );
+            return;
+        }
+
         try {
             // 获取图形数据
             const graphData = graphRef.current.toJSON();
 
-            // 收集节点配置数据
+            // 收<EFBFBD><EFBFBD><EFBFBD>节点配置数据
             const nodes = graphRef.current.getNodes().map(node => {
                 const data = node.getData() as NodeData;
                 return {