Restore in-body search + highlight (regressed by 34252e5); ?q= deep-links reuse it (#4)

sidebar accordion: opening a topic auto-unfolds its branch and folds the others back (active-branch-open logic + syncNavAccordion on navigation); caret ~2x larger (18px)

nav/ToC refinements: sidebar article-parents now visually identical to leaf items (weight 300, same indent); larger/clearer fold caret; front Contents tree fully unfolded by default; file-tree connector lines linking subtopics to parents

home/nav polish: click article-parent row to open (caret-only toggle); drop confusing written/total counts; article-parents get the green dot + match leaf styling; Latest updates moved below Contents; sources show title (id demoted to end), with a frontmatter-title fallback for the flaky /v1/sources

nav/tree: move fold indicator to the right + de-emphasize article-parents to read as normal entries; acronyms get an instant styled tooltip (replacing slow native title) + define SDPO/TDPO

fix: render article-with-children nodes (topics/x.md + topics/x/sub.md) as linked expandable branches in sidebar+Contents; linkify inline-code topic-path cross-refs; correct rollup counts for a node that is both an article and a parent

nav+home: render arbitrary-depth topic hierarchy — sub-categories nest in the sidebar (collapsed by default beyond level 2) and in the Contents tree (rollups recurse). Was flattening 3+ level paths.

sources: coverage facet — show how many sources are woven into articles vs orphaned (never cited), with a 'not yet cited' filter to surface the integration backlog

home: add 'Latest updates' feed (recent merged topics/sources, newest first) with kind badges, agent, relative time, resolving to in-wiki links

figures: resolve relative image src to the dataset (so  renders), light matte for legibility in dark mode, applied in article + book views

topic layout: drop right rail — Contents + Open questions as collapsibles at top, Open questions + Sources-cited references at bottom; add figure/SVG rendering support

Search inside article bodies from the top-left box; ⌘K focuses it (#2)

Make bare category/node topic cross-references clickable (#1)

feature: book view (#/book) — whole wiki as one printable document (title page, contents, parts, articles, sources appendix); Save-as-PDF + pre-rendered downloadable PDF; top-bar + landing entry points

landing: Contents tree — full topic hierarchy with rollup word + reference counts at each level (root total, per-category rollup, per-article), collapsible; replaces the flat map

wiki conventions: clickable in-article section refs (§N), acronym hover glossary (first-use), internal topic/source cross-links; landing reframed for book-length/still-growing depth

landing: editorial 'book intro' — hero + foreword (context, acronyms defined w/ hovers), slim stats, curated 'start here', then the map

ux: topics-first sidebar (one search, readable category headers, no tabs); sources moved to a dedicated top-bar browser view (#/sources)

perf+ux: non-blocking load (prefetch, CDN-first, deferred indexing), source hovercards, shareable section links, acronym-correct titles, optimistic citation/ref resolution

feat: citation-map navigation — cited-by panels, importance sort, year facet, home backbone

feat: scale-ready nav — ⌘K command palette, taxonomy tree sidebar, home 'map', capped source lists

the-viz: wiki reader — faithful render of topics + sources (LaTeX, tables, live citations)