April 2026 monthly summary for gui-cs/Terminal.Gui focusing on delivering a more usable UI Catalog and robust link behaviors. Key achievements included delivering enhanced UI Catalog with link tooltips, URL hover, and an About dialog that can open the project URL directly. Major refactoring updated the About dialog to use ShowAboutDialog with a Dialog, tagline, ASCII art, and a clickable link to the project URL. Link activation logic was modernized to prevent double activation and to open URLs in the browser via a controlled OnActivated path, with URL visibility added to the status bar on hover. Tooltip system and design-time UX were improved, including tooltip extensions and a design-time enablement flow. Extensive cleanup across UI components (e.g., replacing Label+URL with Link controls), renaming AboutUrl to ABOUT_URL, and removing obsolete tests to tighten maintainability. These changes improve end-user navigation, reduce confusion when interacting with links, and streamline future enhancements.