— Two crowns — Same mass, different density — Vertical slider ✓ Slider works — Slider controls crowns — Slider direction correct — Full slider range — Fall animation ✓ Water displacement — Rising water level — Splash effects ✓ Physics correct — Live mass value ✓ Live volume value ✓ Live density value ✓ Live displaced water — Gilded displaces more — Heureka animation ✓ No external deps — Light bg / dark text ✓ Self-contained HTML
Completely ignores the two-crown Archimedes narrative (gold vs. gilded) and replaces it with a generic single-body buoyancy sandbox with no vertical slider, no fall animation, no splash, no Heureka moment, and a dark-background ASCII aesthetic opposite to what was requested.
Completely ignores the two-crown Archimedes narrative (gold vs. gilded) and replaces it with a generic single-body buoyancy sandbox with no vertical slider, no fall animation, no splash, no Heureka moment, and a dark-background ASCII aesthetic opposite to what was requested.