Worked on the zilliztech/claude-context repository to enhance the security and user experience of the Semantic Search WebView. Focused on frontend development using JavaScript, the work addressed a critical web security issue by implementing HTML escaping to prevent XSS vulnerabilities. Improvements also included refining keyboard event handling and event delegation, which streamlined user interactions and increased accessibility. The display of search results and focus management were updated to provide a more intuitive and accessible interface. All changes were tracked through clear commit messages, demonstrating a methodical approach to bug fixing and UI/UX development within a modern web application context.