Architectural deep-dives of high-end WebGL engines rarely surface in production quality due to proprietary bundling and obfuscation. Over the past several months, I conducted an end-to-end systems deconstruction and 1:1 architectural reverse engineering of the runtime driving activetheory.net . Instead of surface-level de-minification, this research focuses on the mechanics of zero-allocation memory footprints in V8, Eulerian Navier-Stokes particle advection, and offscreen floating-point GPG...