feat(editor): Hide AI Transform node when Instance AI is enabled (no-changelog)

The Instance AI assistant supersedes the legacy AI Transform node as the
AI code-generation surface. When the instance-ai module is active, filter
the node out of the creator/search so users aren't offered both. Existing
aiTransform nodes on a canvas still resolve and run.

packages/frontend/editor-ui/src/app/stores/nodeTypes.store.ts

@@ -10,6 +10,7 @@ import {
 	HTTP_REQUEST_NODE_TYPE,
 	CREDENTIAL_ONLY_HTTP_NODE_VERSION,
 	MODULE_ENABLED_NODES,
+	AI_TRANSFORM_NODE_TYPE,
 } from '@/app/constants';
 import { STORES } from '@n8n/stores';
 import type { NodeTypesByTypeNameAndVersion } from '@/Interface';
@@ -220,10 +221,18 @@ export const useNodeTypesStore = defineStore(STORES.NODE_TYPES, () => {
 	});
 
 	const visibleNodeTypes = computed(() => {
+		// Instance AI replaces the legacy "AI Transform" node; hide it from the
+		// creator/search when the instance has Instance AI on.
+		const instanceAiActive =
+			settingsStore.isModuleActive('instance-ai') &&
+			settingsStore.moduleSettings['instance-ai']?.enabled !== false;
 		return allLatestNodeTypes.value
 			.concat(officialCommunityNodeTypes.value)
 			.concat(moduleEnabledNodeTypes.value)
-			.filter((nodeType) => !nodeType.hidden);
+			.filter(
+				(nodeType) =>
+					!nodeType.hidden && !(instanceAiActive && nodeType.name === AI_TRANSFORM_NODE_TYPE),
+			);
 	});
 
 	const nativelyNumberSuffixedDefaults = computed(() => {