From 5d8ba8f8ccd47c2304440a05af6c1c6047def8d8 Mon Sep 17 00:00:00 2001
From: zhsama <torvalds@linux.do>
Date: Fri, 30 Jan 2026 01:30:42 +0800
Subject: [PATCH] feat: Recursively delete nested children (sub-graph) when
 removing nodes

---
 .../workflow/hooks/use-nodes-interactions.ts      | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/web/app/components/workflow/hooks/use-nodes-interactions.ts b/web/app/components/workflow/hooks/use-nodes-interactions.ts
index d73d4e2c38..deaded0ba3 100644
--- a/web/app/components/workflow/hooks/use-nodes-interactions.ts
+++ b/web/app/components/workflow/hooks/use-nodes-interactions.ts
@@ -1041,6 +1041,20 @@ export const useNodesInteractions = () => {
         }
       }
 
+      const nestedChildren = nodes.filter((node) => {
+        const parentNodeId = node.data.parent_node_id
+        if (parentNodeId === currentNode.id)
+          return true
+        if (!parentNodeId && node.id.startsWith(`${currentNode.id}_ext_`))
+          return true
+        return false
+      })
+      if (nestedChildren.length) {
+        nestedChildren.forEach((child) => {
+          handleNodeDelete(child.id)
+        })
+      }
+
       if (currentNode.data.type === BlockEnum.DataSource) {
         const { id } = currentNode
         const { ragPipelineVariables, setRagPipelineVariables }
@@ -2278,7 +2292,6 @@ export const useNodesInteractions = () => {
 
     if (bundledNodes.length) {
       bundledNodes.forEach(node => handleNodeDelete(node.id))
-
       return
     }