Worked on stabilizing the attachment preview workflow in the bigbinary/neeto-editor repository, focusing on front end development using JavaScript. Addressed a critical issue by disabling the preview functionality for HTML file attachments, thereby preventing rendering errors that previously disrupted the user experience. This targeted bug fix improved the reliability of the editor’s preview feature and reduced the risk of user-visible failures. The approach involved disciplined debugging, regression testing, and a focused Git-based workflow to ensure the change did not introduce new issues. Demonstrated attention to code quality and user impact by prioritizing stability and maintainability in the editor’s codebase.