fix: tool connection (#6919)

* fix: tool connection

* doc

document/content/self-host/upgrading/4-15/41502.mdx

@@ -9,6 +9,8 @@ description: 'FastGPT V4.15.0-beta2 更新说明'
 
 1. 优化 OTEL 日志采集格式。
 2. 增加 workflow zod 检查鲁棒性。
+3. 禁用工作流无效连接模式。
+4. 增加工作流节点，名字超长适配。
 
 ## 🐛 修复
 

document/data/doc-last-modified.json

@@ -272,6 +272,7 @@
   "content/self-host/upgrading/4-14/4149.en.mdx": "2026-04-26T21:08:47+08:00",
   "content/self-host/upgrading/4-14/4149.mdx": "2026-04-26T21:08:47+08:00",
   "content/self-host/upgrading/4-15/4150.mdx": "2026-05-09T16:13:01+08:00",
+  "content/self-host/upgrading/4-15/41502.mdx": "2026-05-12T11:14:32+08:00",
   "content/self-host/upgrading/outdated/40.en.mdx": "2026-04-26T21:08:47+08:00",
   "content/self-host/upgrading/outdated/40.mdx": "2026-04-26T21:08:47+08:00",
   "content/self-host/upgrading/outdated/41.en.mdx": "2026-04-26T21:08:47+08:00",
@@ -413,7 +414,7 @@
   "content/self-host/upgrading/upgrade-intruction.en.mdx": "2026-04-26T21:08:47+08:00",
   "content/self-host/upgrading/upgrade-intruction.mdx": "2026-04-26T21:08:47+08:00",
   "content/toc.en.mdx": "2026-05-09T15:25:23+08:00",
-  "content/toc.mdx": "2026-05-09T15:25:23+08:00",
+  "content/toc.mdx": "2026-05-12T11:14:32+08:00",
   "content/use-cases/app-cases/dalle3.en.mdx": "2026-04-26T21:08:47+08:00",
   "content/use-cases/app-cases/dalle3.mdx": "2026-04-26T21:08:47+08:00",
   "content/use-cases/app-cases/english_essay_correction_bot.en.mdx": "2026-04-26T21:08:47+08:00",

packages/service/core/workflow/dispatch/utils/clientAbort.ts

@@ -15,6 +15,8 @@ export const createClientAbortTracker = ({
   let clientAborted = false;
   let responseCompleted = !!(res?.writableEnded || res?.writableFinished);
 
+  // For workflow stopping, "client aborted" means the current response can no longer be written.
+  // It is intentionally broader than a strict user-initiated cancel audit signal.
   const responseFinished = () =>
     responseCompleted || !!(res?.writableEnded || res?.writableFinished);
   const responseWritableAborted = () =>
@@ -22,6 +24,7 @@ export const createClientAbortTracker = ({
   const hasExplicitAbort = () => !!(req?.aborted || responseWritableAborted());
   const hasBrokenConnection = () => !!(req?.socket?.destroyed || res?.destroyed || res?.errored);
   const isAbortedSnapshot = () => {
+    // A normal completed response may also emit close later. Do not treat that as abort.
     if (responseFinished()) return false;
 
     return hasExplicitAbort() || hasBrokenConnection();

projects/app/src/pageComponents/app/detail/WorkflowComponents/Flow/nodes/render/Handle/ToolHandle.tsx

@@ -51,7 +51,7 @@ export const ToolTargetHandle = ({ show, nodeId }: ToolHandleProps) => {
         type="target"
         id={handleId}
         position={Position.Top}
-        isConnectableEnd={showHandle}
+        isConnectableEnd={active}
       >
         <Box
           className="flow-handle"
@@ -65,7 +65,7 @@ export const ToolTargetHandle = ({ show, nodeId }: ToolHandleProps) => {
         />
       </Handle>
     );
-  }, [showHandle, size]);
+  }, [active, showHandle, size]);
 
   return Render;
 };
@@ -130,7 +130,7 @@ export const ToolSourceHandle = ({ nodeId }: { nodeId: string }) => {
         </Handle>
       </MyTooltip>
     );
-  }, [onConnect, size, t]);
+  }, [active, onConnect, size, t]);
 
   return Render;
 };

projects/app/src/pageComponents/app/detail/WorkflowComponents/Flow/nodes/render/NodeCard.tsx

@@ -354,7 +354,7 @@ const NodeCard = (props: Props) => {
                       appId={pluginId}
                     />
 
-                    <Box flex={1} mr={1} />
+                    <Box mr={1} />
 
                     {showVersion && <NodeVersion node={node!} />}
 
@@ -428,6 +428,8 @@ const NodeCard = (props: Props) => {
 
 export default React.memo(NodeCard);
 
+const NODE_NAME_MAX_LENGTH = 50;
+
 // 节点标题区域组件
 const NodeTitleSection = React.memo<{
   nodeId: string;
@@ -490,9 +492,25 @@ const NodeTitleSection = React.memo<{
   });
 
   return (
-    <Flex alignItems={'center'}>
+    <Flex alignItems={'center'} flex={'1 1 0'} minW={0}>
       <Avatar src={avatar} borderRadius={'sm'} objectFit={'contain'} w={'24px'} h={'24px'} />
-      <Box ml={2} fontSize={'18px'} fontWeight={'medium'} color={'myGray.900'}>
+      <Box
+        ml={2}
+        flex={1}
+        minW={0}
+        fontSize={'18px'}
+        fontWeight={'medium'}
+        color={'myGray.900'}
+        overflow={'hidden'}
+        textOverflow={'ellipsis'}
+        whiteSpace={'nowrap'}
+        title={t(name as any)}
+        sx={{
+          '& > div': {
+            display: 'inline'
+          }
+        }}
+      >
         <HighlightText
           rawText={t(name as any)}
           matchText={searchedText ?? ''}
@@ -500,11 +518,11 @@ const NodeTitleSection = React.memo<{
           color={'#ffe82d'}
         />
       </Box>
-      <Box ml={1} visibility={'hidden'}>
+      <Box ml={1} flexShrink={0} visibility={'hidden'}>
         <MyIconButton className="node-hover-controller" icon="edit" onClick={handleRenameClick} />
       </Box>
       {childAppId && (
-        <Box ml={1} visibility={'hidden'}>
+        <Box ml={1} flexShrink={0} visibility={'hidden'}>
           <MyIconButton
             className="node-hover-controller"
             icon="common/link"
@@ -514,7 +532,7 @@ const NodeTitleSection = React.memo<{
         </Box>
       )}
 
-      <EditTitleModal maxLength={100} />
+      <EditTitleModal maxLength={NODE_NAME_MAX_LENGTH} />
     </Flex>
   );
 });
@@ -653,7 +671,7 @@ const NodeVersion = React.memo(function NodeVersion({ node }: { node: FlowNodeIt
         )}
       </Flex>
     );
-  }, [node.isLatestVersion, node?.version, node?.versionLabel, t]);
+  }, [node.isLatestVersion, node.version, node.versionLabel, t]);
 
   const ScrollDataWrapper = useCallback(
     (props: { children: React.ReactNode }) => (