Follow lists were paginated at the API default of 48, but the SPA treats
them as complete sets: the tag/pool toggles read their state from page one
(so the 49th follow looked unfollowed and its spinner waited for a page that
could never contain it) and the Followed page rendered only 48 cards while
showing that as the count. Both follow endpoints are now unpaginated — they
are per-user sets and still restricted to the caller's rows — and the three
consumers take plain arrays.
Post visibility: the old J621-Django online view fetched limit=320 (e621's
maximum) while ours hard-coded 48, and fetchPostsByIds capped id batches at
100. The Online browser now has a 'Posts per page' setting (48/100/200/320)
in its sidebar, mirrored in Account -> Browsing preferences, stored per user
as e621_per_page and also used for pool loading; the id-batch cap is raised
to 320.
Tests: follow list shape/isolation (4) and preference validation/merge (3)
added; the full backend suite is 46 green. Live-checked the array response
shape and the preference bounds (200 accepted, 500 rejected).
Adds a preferences JSON field on the user plus GET/POST
/api/auth/preferences/ (merge semantics, validated keys), surfaced in
/auth/me/ and typed on the frontend.
The Account page gains a Browsing preferences card: landing page,
default rating filter, default sort, items per page and thumbnail size.
Signed-in users also sync these while browsing (the Library sidebar's
rating/sort/per-page controls and the new thumbnail slider), debounced;
on load the account's values seed the local UI state, so settings follow
the user across browsers. Guests keep the existing localStorage
behaviour. The thumbnail size drives the media grids (Library, Online,
pool detail) between 140 and 320px columns.
Verified the API against the dev server: merge keeps untouched keys,
invalid values 400, values round-trip through /auth/me/.
JakeBreath