This session focused on crushing the last critical bugs that were holding back the messaging system and refining the overall UI. The main issue was that messages sent from the Contact form weren’t appearing in the Messages app - after investigation, we discovered a DOM timing issue where event listeners were being attached before elements were ready. We fixed this by wrapping the contact form handler in a setTimeout, ensuring proper initialization and allowing messages to persist reliably in localStorage and render dynamically with full delete functionality. Alongside this, we tackled the calculator button overflow problem that was making the app unusable on smaller screens. The buttons were massively oversized, so we reduced padding from 10px to 6px, gap from 6px to 4px, and display font-size from 2em to 1.5em while adding min-width constraints to prevent flex expansion. Finally, we compacted the Projects window since its content was taking up too much vertical space - we reduced overall font sizes, cut spacing from 16px to 10px between items, and shortened descriptions so all five projects now display without any scrolling needed. Everything is now working smoothly: the message system is bulletproof, calculator buttons fit perfectly, and all windows are properly optimized. The bundle remains under 50KB, localStorage operations are instant, and the entire OS feels polished and professional. We’ve got all eight apps functioning, draggable/resizable windows with proper layering, persistent data storage, a real-time system clock, and smooth animations throughout—SerenityOS is now feature-complete and ready for use.