Stable port of the main commit; the admin-preview and maintenance-gate
items do not exist on this branch.
- the general rate limiter skipped anyone holding any verified JWT; a
gallery token is minted for free on password-less galleries and slideshow
links, so that was an unlimited budget for every /api route. Only admin
sessions skip now
- the 50mb JSON limit is scoped to /api/admin and /api/v1; everything else
gets 2mb, so an unauthenticated body can no longer stall JSON.parse
- the CSRF Content-Type gate accepted multipart from any origin; cross-site
form posts are now rejected via Sec-Fetch-Site / Origin, with a Host match
fallback for same-origin installs that leave FRONTEND_URL unset
(cherry picked from commit 839bf4e4, adapted)
