Day two was when the project stopped being just a Linux rescue and became an SDL2 migration, with new platform layers for input, windows, timing, and rendering, plus enough renderer scaffolding to draw lines, quads, textures, sprites, and rectangles while the old Allegro/OpenGL world began its slow march toward retirement. It was also when I really started using coding agents seriously, with Codex and Claude via GitHub Copilot doing most of the keystroke-heavy work while I learned the more important skill of managing them properly: breaking tasks down, reviewing changes, steering them away from confident nonsense, and using them to chew through boring but necessary scaffolding much faster than I could by hand.