Worked on the langchain-ai/deepagentsjs repository to enhance sandbox tool reliability by implementing symlink-aware filesystem exploration. Addressed an issue where find commands returned empty results on symlinked paths by adding the -L flag to find invocations within buildLsCommand, buildFindCommand, and buildGrepCommand. This update ensured that symbolic links were properly dereferenced, aligning sandbox tool behavior with standard shell expectations and improving accuracy for users working with mounted symlinks, such as on Modal. The solution was developed using TypeScript and involved command line tool integration and comprehensive testing, with validation across ls, glob, and grep sandbox utilities to ensure robust functionality.