Magnet Crane Scrap Yard Game Builder

Build a magnet-crane scrap yard game from one prompt. You get a playable single-file HTML game: a tower crane with an 8-segment Verlet chain, an electromagnet that grabs and drops real weight, dusk lighting, long shadows, sparks on every impact, scrap that stacks without jitter, plus synthesised magnet hum, chain creak and clang. 3 levels: Daylight Sort, Rush Hour with a conveyor and fillable bins, and Storm Shift with wind gusts and a live bin that shorts your magnet. Mobile and desktop.