Model TTSObjectTransform in shared types and convert each object's position, rotation, and scale into three.js placement, with per-class base-size corrections and a lay-flat rotation for extruded meshes.
Add a /mod/:id/setup page that lays out every renderable object in a single shared scene. Export object-facing mesh wrappers from the viewers and share geometry and materials across objects via module-level caches.
hypercross