✓ 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
Slider direction is inverted — HTML vertical range defaults to bottom=min/top=max so dragging down decreases depth value, contradicting the labeled intent; all physics values are correct (Gold 19.32 g/cm³, gilded 13.15 g/cm³, same 1000 g mass) and the ASCII art heureka overlay is a strong touch, but the water-rise character quantization is coarse and splash effects are text-only approximations.
7,564 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted — HTML vertical range defaults to bottom=min/top=max so dragging down decreases depth value, contradicting the labeled intent; all physics values are correct (Gold 19.32 g/cm³, gilded 13.15 g/cm³, same 1000 g mass) and the ASCII art heureka overlay is a strong touch, but the water-rise character quantization is coarse and splash effects are text-only approximations.