Refactors the website visual runtime to make WebGL-heavy sections more
reliable and less expensive.
This adds shared image/model loading caches, safer WebGL context
recovery, staggered visual mounting, and static rendering for decorative
Helped card visuals. It also removes a large bespoke Helped renderer in
favor of the shared halftone model canvas, reduces scroll/layout work in
the Helped section, and cleans up duplicated model-loading code across
several visuals.