Pages load with far less JavaScript
Every page shipped whole icon libraries and fetched the same path record up to six times when a journey opened. Both are gone, so Home, Paths, chapters and New open faster.
The design-system icons now come from individual glyph files instead of whole icon sets, and the seven brand marks are inlined, which removes tens of megabytes of script from every page in development and trims the production bundle. Opening a path also makes a single request for the path record shared by the header, breadcrumb and learning surface instead of one per consumer.