work on fixing group drag

frontend/src/workflowSerialization.js

@@ -1,15 +1,44 @@
 export function serializeWorkflowState(nodes, edges) {
+  const compactObject = (value) => {
+    if (!value || typeof value !== 'object') return null;
+    const entries = Object.entries(value);
+    return entries.length > 0 ? Object.fromEntries(entries) : null;
+  };
+  const getExtraData = (data) => compactObject(Object.fromEntries(
+    Object.entries(data || {}).filter(([key]) => ![
+      'label',
+      'className',
+      'widgetValues',
+      'runtimeValues',
+      'definition',
+      'previewImage',
+      'tableRows',
+      'meshData',
+      'overlay',
+      'scalarValue',
+      'processingTimeMs',
+      'warning',
+    ].includes(key))
+  ));
+
   return {
     version: 1,
     nodes: nodes.map((node) => ({
       id: node.id,
       type: node.type || 'custom',
       position: node.position,
+      ...(node.className ? { className: node.className } : {}),
+      ...(node.parentId ? { parentId: node.parentId } : {}),
+      ...(node.extent ? { extent: node.extent } : {}),
+      ...(node.hidden ? { hidden: true } : {}),
+      ...(node.style ? { style: node.style } : {}),
       dragHandle: node.dragHandle || '.drag-handle',
       data: {
         label: node.data?.label || node.data?.className || 'Node',
         className: node.data?.className || '',
         widgetValues: node.data?.widgetValues || {},
+        ...(compactObject(node.data?.runtimeValues) ? { runtimeValues: compactObject(node.data?.runtimeValues) } : {}),
+        ...(getExtraData(node.data) ? { extraData: getExtraData(node.data) } : {}),
         output: node.data?.definition?.output || [],
         output_name: node.data?.definition?.output_name || [],
       },
@@ -21,6 +50,8 @@ export function serializeWorkflowState(nodes, edges) {
       target: edge.target,
       targetHandle: edge.targetHandle,
       ...(edge.style ? { style: edge.style } : {}),
+      ...(edge.hidden ? { hidden: true } : {}),
+      ...(edge.data ? { data: edge.data } : {}),
     })),
   };
 }