Toy cosmology: 131,072 particles under central gravity plus Hubble flow, stepped live in WebAssembly. The field expands, falls back and re-settles, then breathes again. Detonate fires a fresh expansion on demand. An illustrative companion to the audit — not derived from the Z6 lattice. The view auto-fits the field each second so a collapsed state stays visible; the counters show exactly how many points were drawn, skipped, or culled.