CoACD takes seconds per mesh, so a scene of six chess piece meshes paid about forty seconds at every world build. As physics engines cache cooked collision meshes, the parts now persist in Node under node_modules/.cache/@drawcall/physics of the working directory, keyed by the CoACD build, its settings and the mesh. The cache loads only in Node and only when a mesh needs decomposing; it never breaks a build: failed writes are skipped, unreadable or invalid entries are misses, and without a node_modules nothing is cached.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>