3D animation-principles loop with a voxel mascot

Build a 3D animation-principles loop. One HTML file, three.js 0.160.0 via jsDelivr importmap, Geist Mono from Google Fonts. 1080x1080, 8 s at 60 fps (480 frames), frame 480 equals frame 0. window.renderAt(t) draws any frame from t alone; seeded random only. Set: a miniature studio. A floating white 12x6 slab on an F4F2EE backdrop. Its top is a timeline: 3 tracks of 0.25 frame cells (EFEEEA), a ruler with frame numbers, 5 keyframe diamonds 2 units apart on the middle track (white fill, 0F0F0F outline). Around it on stands: a key softbox, a rim strip light, a top spot on a boom. Hero: the pixel Claude mascot as 0.1 voxels: D97757 body 14x10x8, two 3x2 arms, four 2x3 legs, 0F0F0F 2x3 eyes; roughness 0.45, clearcoat 0.3. Lights, 0 to 1 s: key 3200 K with soft shadows at 0.1 s, rim 7500 K at 0.4 s, top spot 5000 K at 0.7 s. Each clicks on with a 3-frame flicker, and the mascot's eyes glance at it. Hops, 1 to 5 s: 4 hops to diamonds 2 to 5, landing on frames 105, 165, 225 and 285. Each hop: 11-frame crouch (1.2x0.75), stretch 0.85x1.28 at takeoff, 25 frames of air, squash 1.25x0.7 on landing, spring back at damping 0.55; arms lag 4 frames, legs 6. Each landing lights its diamond FF6A2B, ripples the cells 0.08 high and throws 12 voxel sparks. An FF6A2B playhead carrying a point light moves at constant speed and crosses each diamond on its landing frame. Flip, 5 to 6.4 s: a dotted arc from diamond 5 back to diamond 1 draws in, then an 18-frame deep crouch and a 360° flip along the arc, 3.5 high, landing on frame 384 while the playhead rewinds under it. Labels, top left, Geist Mono 28 px: a checklist 01 ANTICIPATION, 02 SQUASH & STRETCH (& in D97757), 03 OVERLAPPING ACTION, 04 FOLLOW-THROUGH, 05 ARCS, in 8E8A83. Each row turns 0F0F0F and fills its FF6A2B diamond on its exact frame: 69 (first crouch), 140 (stretch), 200 (limbs trail), 285 (arms settle), 303 (arc draws). End: hold, blink at 7.2 s; on frame 468 the lights, diamonds and labels snap off. Camera: FOV 18, 30° elevation, ±10° orbit over 8 s, 25% push-in tracking the hops, 4% punch-in on the flip landing. Post: bloom on emissives, depth of field focused on the mascot, 2% grain, 10% vignette, dithered backdrop.