feat(wiki): enforce OKF in-place, remove okf bundle, regenerate per-folder indexes and fix human links - Delete okf/ bundle; OKF format now in-place via per-folder index.md/log.md - Regenerate 35 per-folder index.md to strict OKF format, create missing log.md - Rebuild Home.md/_Sidebar.md to Navigation Contract; remove NAV_BLOAT - Fix MD_EXT/PATH_LINK violations in 18 human pages to filename-only slugs - Clean kb/index.md duplicate entry and intro content