Worked on security hardening for the openclaw/openclaw repository, focusing on the HTML Gallery component within the OpenAI Image Gen Skill. Addressed a stored XSS vulnerability by implementing HTML escaping for user-controlled input in prompts and filenames, ensuring that rendered content is protected from malicious scripts. Used Python and Markdown to develop and test the solution, adding automated tests to validate the escape logic and prevent future regressions. This work improved the security and stability of user-generated content rendering in production. The approach emphasized robust XSS prevention and thorough testing, reflecting a careful and methodical engineering process over the month.