Worked on enhancing the reliability and developer experience of the openclaw/openclaw repository by focusing on error handling within the Sandbox Docker workflow. Addressed a key issue where the Docker command was not found by implementing actionable error messaging, which improved user guidance and made configuration errors more transparent. Added automated tests in JavaScript and TypeScript to verify the new error path, increasing test coverage and ensuring robust behavior. Emphasized backend development and testing practices to reduce user friction and improve maintainability. The work contributed to a more reliable product by streamlining error diagnosis and supporting clearer developer documentation and workflows.