wiki: vision rung on Roadmap; Playground cube family + Clock Co-Authored-By: Claude <noreply@anthropic.com>
wiki: comprehensive site build — categories, sidebar, footer 17 pages: Home + category set (Getting-Started, Decisions, Confidence, Engine, Architecture, Interfaces, Models, Benchmarks, Playground, Releases, Security, Contributing, FAQ, Roadmap) with site-wide _Sidebar nav and cross-linked _Footer. Sourced from the main repo's docs of record; current release v0.6.1. Co-Authored-By: Claude <noreply@anthropic.com>