WebGPU jelly car stunt page with ramps, wall rides, hover jets and burnout phases

[Note: the creator shared a partial prompt. Wording below is theirs.] GOAL: Build a single-file WebGPU "material study" page called "Stunt Jelly", in the style of my jelly creature series (Crab Jelly / Turtle Jelly / Octopus Jelly): editorial layout, large italic serif title "Stunt / Jelly.", kicker "Material Studies / Automobilia", a short poetic caption ("Up the wall, upside down, and back. The bodywork is still catching up."), live status chip showing the current stunt phase, glass control panel on the right (a bottom sheet on phones), stats row (Speed, Air time, Volume, Frame), collapsible "Inside the experiment" notes, and stunt title cards that fade in over the stage ("0–60 mph in 0.9 s", "Up the wall", "Upside down, held by suction", "Barrel roll", "Cold-gas thrusters", "…and drive away"). UI in English, works on mobile, 60 fps. This one is a deliberate dark page: a night stunt stage instead of the paper studio. MOTION: Recreate the stunt from a recent car launch video, but the car is a translucent gummy jelly toy. Use an original cartoon sports car, not a real model, with no brand names or logos: a rounded wedge body, a bubble canopy with smoky tinted-glass windows, round headlamps, a red tail-light bar, and four black liquorice tyres with a tread and translucent five-spoke hubs that visibly turn. The stage: a dark hall, a polished concrete floor with white painted lines, red LED strips along the runway, pools of overhead light, and the car's headlights lighting the floor and the ramp. A tall curved concrete wall ramp with red LED edges and a white centre line goes from the floor through a quarter pipe to a vertical wall, then curls about 125° back over itself into an overhang, on a dark steel truss tower. Real refraction and subsurface glow through the jelly, soft jelly-tinted shadows, a wet glossy highlight, tiny air bubbles trapped inside. Physics: XPBD soft body (shape-matched cells + tetrahedral volume preservation) for the whole car, wheels included. Stunts are staged like real ones: a scripted pose drives the chassis through a PD servo that is strong at the wheels and weak at the roof, so the jelly lags, sags and squashes on its own. Wheels roll, with friction only sideways. Contacts with the floor and the analytic ramp. When parked, a soft damped suspension keeps the body from slumping. Particle tyre smoke, white cold-gas jets and a big landing cloud as soft billboards. The show (one button runs it all): launch 0–60 in under a second with tyre smoke while the body leans back, then reverse to the line; drive up the wall to the overhang (the body sags on the vertical); hang upside down "by suction" with the roof drooping; drop away with side thrusters firing and do a barrel roll; hover down on four cold-gas jets while a cloud builds beneath; land with a big squash; drive out of the cloud and drift back to the start line. Separate buttons for Launch, Wall ride, Hover and Burnout. Plays automatically when left alone. A follow camera frames each phase. Interactions: tap the car and it wobbles; press and h