- useSEO: for the static SEO routes (marketing pages, examples gallery,
editor, home) the canonical is now the page's OWN locale variant and the
head lists every locale variant as rel=alternate hreflang plus x-default
on the locale-less English URL. /es/ and /zh-cn/ were declaring
canonical=/ while Google indexed and ranked them on their own — an
unstable contradiction. UGC pages (projects, profiles, example detail
pages) are the same English content under every prefix and keep a single
locale-less canonical with no hreflang.
- prerender-seo.mjs emits the same hreflang set into each prerendered page
and writes dist/seo-routes.json (path/title/description) so the prod app
shell can serve the /<locale>/<route> variants (which have no static file)
with the route's own head.
- /editor gets seoMeta and a static SSR summary component, so it is
prerendered: nginx now serves /editor/ as a real page and 301s /editor to
it. Both forms answered 200 with the homepage head before, and Google
indexed /editor and /editor/ as two pages.
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