Route public health checks to the API, backfill and synchronize job opportunities, stabilize SPA smoke tests, and document operator-only production steps.
Phase 4.5 (priority 4). The app is a React Router SPA behind Next static
export, which only generated `/` — so a hard load of any deep path (/cv/{slug},
/login, /career/builder/…) hit Next's client not-found before React Router
could route it. Replace the single app/page.tsx with an optional catch-all
app/[[...slug]] (server page + client shell so generateStaticParams stays
server-only) that matches every path; nginx already serves index.html for
unknown paths (try_files), so React Router now owns routing on direct load.
Also: PublicCvPage shows a friendly 404 empty state and sets the document
title. Verified live — /login and /cv/{slug} both resolve on direct navigation.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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