feat(canvas): persist group node dimensions on resize

- Add `setNodeStyle` to update node dimensions when resizing
- Ensure group node width and height are saved in node data
- Improve group node resize handling with persistent styling

packages/ai-workspace-common/src/components/canvas/nodes/group.tsx

@@ -24,6 +24,7 @@ import { useEditorPerformance } from '@refly-packages/ai-workspace-common/contex
 import { useCanvasContext } from '@refly-packages/ai-workspace-common/context/canvas';
 import { useSetNodeDataByEntity } from '@refly-packages/ai-workspace-common/hooks/canvas/use-set-node-data-by-entity';
 import { useThrottledCallback } from 'use-debounce';
+import { useNodeData } from '@refly-packages/ai-workspace-common/hooks/canvas/use-node-data';
 
 interface GroupMetadata {
   label?: string;
@@ -71,6 +72,7 @@ export const GroupNode = memo(
     const { addNode } = useAddNode();
     const { selectNodeCluster, groupNodeCluster, layoutNodeCluster } = useNodeCluster();
     const setNodeDataByEntity = useSetNodeDataByEntity();
+    const { setNodeStyle } = useNodeData();
 
     // Memoize node and its measurements
     const node = useMemo(() => getNode(id), [id, getNode]);
@@ -429,6 +431,10 @@ export const GroupNode = memo(
               target.style.top = `${newTop}px`;
 
               setSize({ width: newWidth, height: newHeight });
+              setNodeStyle(id, {
+                width: `${newWidth}px`,
+                height: `${newHeight}px`,
+              });
             }}
             hideDefaultLines={true}
             className={`!pointer-events-auto ${!isHovered ? 'moveable-control-hidden' : 'moveable-control-show'}`}