feat: enhance canvas and node components with error handling and retry logic

- Integrated retry logic for AI image generation to handle transient errors and improve user experience.
- Updated error categorization to provide more informative feedback based on different failure scenarios.
- Enhanced node components to display retry attempts and error messages, improving visibility during image generation failures.
- Refactored canvas and node components to include retry count in status updates, ensuring accurate tracking of generation attempts.

components/canvas/nodes/group-node.tsx

@@ -44,6 +44,7 @@ export default function GroupNode({ id, data, selected }: NodeProps<GroupNode>)
 
   return (
     <BaseNodeWrapper
+      nodeType="group"
       selected={selected}
       className="min-w-[200px] min-h-[150px] p-3 border-dashed"
     >