Both providers were FutureProvider<Paged<T>> returning a single page
of 50, so once the user scrolled past 50 items the list just ended.
Replace with AsyncNotifier<Paged<T>> that exposes loadMore(): fetches
the next page using items.length as the offset and appends to the
existing list. Idempotent guard via _loadingMore flag — concurrent
scroll events near the bottom collapse to a single fetch.
Both tabs now wrap the GridView in NotificationListener<ScrollNotification>
that fires loadMore() when within 800px of maxScrollExtent. The
lookahead is enough that the next page lands before the user hits
the visible bottom on a typical phone scroll.
Pull-to-refresh updated to invalidate + re-await the provider so a
manual refresh always starts from the first page.
bvandeusen
8c00ee21c7