Uses exact overlapping-circle uniformFlux geometry from diegocedenno/transit-finder, MIT copyright 2026 diegocedenno. New synthetic inverse-fitting game and interface. Uniform-brightness disk and straight chord; excludes limb darkening and observational noise. Educational geometric model.
Repository https://github.com/diegocedenno/transit-finder
Commit e7fc6ee2ac60dd19b46a8fa03af6db6773219f51
Full editable adaptation: index.html, style.css, app.js; no build required.