Worked on the zed-industries/zed repository to enhance backend reliability by addressing a specific bug in Rust related to error handling for file operations. Focused on improving the user experience, the developer implemented a clear, actionable error message when the read_file function is called with a directory path, guiding users toward the correct list_directory usage. This change included adding targeted tests to ensure robust input validation and prevent future regressions. Release notes were updated to document the workflow adjustment, supporting smoother adoption. The work demonstrated attention to detail in Rust backend development and contributed to more predictable tool behavior for end users.