The cleanup pass already happened — import maps removed, Tailwind migrated from CDN to npm, API keys moved to env vars — and the app still wouldn't do what it was supposed to do. Camera frozen on the initial map bounds while the spacecraft marker flies off-screen. Linear interpolation drawing straight Mercator lines instead of great-circle arcs. Five dead packages adding 1,100 transitive dependencies for features that don't exist. Got it booting with npm install and next build clean on the first try, but "compiles without errors" and "works correctly" are two different things. The AI Studio initial cleanup is necessary scaffolding, but the real work starts after: reading the actual code, understanding the intended experience, and finding the gap between what ships and what should ship.