A queue change re-read only the first 40 items, so the pages Load more had
shown vanished and the page jumped. Each re-read now reads page after page
until it holds as many items as were shown (a restore met after the first
page reads again from the start), so the cards and the scroll position stay.
The stream's ready made every visit read the queue twice. List reads now
answer the queue's version (library_epoch, review_revision) and ready names
the version read after subscribing; the page re-reads on ready only when the
queue it shows is older. The SAVED VIEWS count follows the page's total, so a
change costs no count read. A stream counts as open only once ready is sent.
Vito Sansevero
9b9a07ccef