✓ 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 (min=0 maps to "air" in the label but the slider thumb starts at left/bottom of a rotated range input, making top-of-slider=water rather than air); mass/volume/density panels show hardcoded static values rather than live-updating ones, failing the live readout requirement for three of the four metrics.
9,609 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 maps to "air" in the label but the slider thumb starts at left/bottom of a rotated range input, making top-of-slider=water rather than air); mass/volume/density panels show hardcoded static values rather than live-updating ones, failing the live readout requirement for three of the four metrics.