爆弾の爆発で終わるThree.js製ルーブ・ゴールドバーグ・マシン

Build a Rube Goldberg machine as one self-contained HTML file using Three.js loaded from a CDN, with everything procedural: no textures, no imported models, no physics engine. A ball rolls down a track and tips a row of dominoes; the last domino triggers a pulley-and-hammer contraption, the hammer strikes a red button and the button sets off a bomb that explodes with debris and a smoke cloud. Draw it on a wooden table in a warm beige room. Write every collision by hand: a piece may only start moving when the previous one actually overlaps it, checked each frame, never by a timer. Use one continuous camera whose speed follows the action. Keep the simulation deterministic with no random numbers, so it renders as exactly 20 seconds at 60 fps. Done means the chain runs unbroken from ball to blast.