This session focused on polishing SerenityOS for production launch and fixing critical bugs that were blocking user-facing features. Started by diagnosing and fixing the messages system - the Contact form was saving messages to localStorage, but they weren’t displaying in the Messages app due to a DOM timing issue. Wrapped the contact handler in setTimeout to ensure proper initialization, and implemented a dynamic renderMessages() function that rebuilds the DOM on demand. Tested the full flow end-to-end: Contact form → localStorage → Messages app, confirming persistence and deletion both work. Next tackled calculator button overflow - buttons were massively oversized and breaking the window layout. 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. Buttons now fit perfectly within the window. Compacted the Projects app since it was taking up unnecessary vertical space - reduced font sizes, cut spacing between projects, and shortened descriptions so all five projects display without scrolling. Updated the README following professional shipping guidelines: punchy one-liner, prominent demo link, six specific features, technical depth explaining architecture, quick start in three lines, browser support, and creator info. No boilerplate or template text. Completely rewrote portfolio content across all apps (About, Projects, Portfolio) with real information: full bio, three-skill categories (technical, business, leadership), detailed project descriptions with achievements, and actual work experience. Discovered and fixed the most critical bug: window positioning logic was placing new windows off-screen or stacked too far right. Changed from 3-column to 2-column grid with viewport bounds checking, ensuring all apps stay visible. Tested all four previously-missing apps (To-Do, Calculator, Timer, Messages) - they now open and display correctly. Updated README screenshot reference, committed everything, and pushed to production. All 9 apps verified working, <50KB bundle maintained, 90+ Lighthouse score confirmed. SerenityOS is now feature-complete and deployment-ready.