Opus 5.5 just built me a mechanical watch in 3D.

Opus 5.5 just built me a mechanical watch in 3D. 1 prompt in Claude Code, about 14 minutes. The balance wheel swings 5 times a second, the gears turn, the seconds hand ticks, and 1 button pulls all 21 parts apart with their names on them. Hover any part and it tells you what it does. I'm giving away the exact prompt. Steal it ↓ Build me a mechanical watch in interactive 3D, in one HTML file with Three.js. Make it look real: the gold case and the glass on top, the dial and the hands, and behind it the movement you never get to see. The mainspring in its barrel, the gear train, the balance wheel swinging back and forth with its hairspring breathing, the escape wheel and the pallet fork ticking, and the red jewels the gears turn on. The balance wheel swings, the gears turn, and the second hand ticks. I can drag to orbit around it and scroll to zoom. Add an Explode button. When I press it, every part slides apart in layers with its name on a label. Press it again and it all snaps…