/c/<slug> renders one of the eight categories with every active listing
in it, newest first, as a grid of cards. Empty category shows
a "be the first" prompt rather than a dead page.
/app/<pub>/<slug> renders a listing: icon + name + publisher + version
chip, a prominent Download card with size, hash chip,
signed scan badge (green/clean | red/infected |
neutral/unknown), description, homepage link, who
signed, and an endorsements placeholder for when APS1
lands.
The home-page and /browse grids now read real counts from the DB — the
hardcoded "0 listings" placeholders are gone. A new helper
`renderCategoriesGrid()` is the one place category cards are rendered,
so the two surfaces always agree.
404s for unknown categories (`/c/nope`) and unknown listings
(`/app/foo/bar`) go through the same notFound page and now actually
return HTTP 404 instead of 200 — pages opt in by returning the
notFound object, server detects it by title and sets the status.
CATEGORIES is the single source of truth for slug/icon/title/blurb;
adding a new category now means one row here plus one entry in the
listings allow-list.
Verified end-to-end with three listings across three categories: counts
update, cards render, detail page shows the signed scan badge, 404s
return 404.
