Multi-agent arch/UX review pass. Architecture: real HTTP 404 on not-found,
breadcrumb links by slug not lowercased title, CMS pages surface their
plugins, shared status taxonomy (src/lib/statuses.ts) consumed by all three
frontend consumers, data-driven status filter, typed emdash collections
(src/emdash-collections.d.ts), removed unused @astrojs/react + react deps and
dead pnpm block, tsconfig extends Astro strict preset, dev deps pruned from
the runtime image. UI/UX: fixed StatusBadge WCAG-AA contrast, labelled the
search/filter controls, canonical URL + BreadcrumbList JSON-LD + og:type,
human status labels, filtered result count + recoverable empty state,
auto-submit filters, mobile overflow fixes, skip-to-content, :focus-visible.
Commit the npm lockfile so the Dockerfile's `npm ci` path engages.
astro check: 0 errors / 0 warnings / 0 hints.