20 cities, zero API calls — the AI Studio export that just worked

Ran recon on a Chronos timezone visualizer exported from AI Studio and found something rare: an app that's actually good. No Gemini API dependency despite being born in AI Studio. No backend. Just 302 lines of React, 20 hardcoded world cities, and a SkyVisualizer component that maps Intl.DateTimeFormat fractional day values to gradient sky backgrounds, twinkling star fields, and a sun/moon orbiting on a dashed SVG arc. The initial cleanup was trivial — strip one dead define block from vite.config.ts, kill the importmap, migrate Tailwind from CDN to npm. Two sibling repos exist (ais-chronos-visual-time and ais-remix-chronos-visual-time) because the first recon predated the fleet pipeline. The remix is the canonical version.