feat(media): pagination

features/media_browse.qa.md

@@ -147,5 +147,6 @@ Manual checks screenshots cannot cover:
 - **Toast placement and stacking** on a live app.
 - **Counts after a delete** against a live server: the background refresh gives the true Unused
   and Duplicates counts.
-- **A library above 100 images**: B1 requests `limit=100` and ignores `next_cursor`, so only the
-  first 100 show.
+- **A library above 25 images**: amended by `features/media_pagination_screen.feature`. B1 used to
+  request `limit=100` and ignore `next_cursor`; the page now requests `page=1&size=25` (or the stored
+  size) and shows a paginator, so every image is reachable.