fabro/nodes/work/response.md

Perfect! The file /tmp/scenario_flag.txt contains SCENARIO_FLAG_42, which confirms that the sandbox filesystem is indeed shared across command and agent nodes. The setup stage successfully created the file with that content, and we were able to read it, demonstrating that:

1. ✅ The file created in the setup stage persists in the filesystem
2. ✅ The file is readable from subsequent nodes
3. ✅ The sandbox filesystem is properly shared across different node types

This validates that the workflow's sandbox environment maintains state across execution stages.