The player's queue came live from the feed query, which refetches under a
watch-state filter as each video is auto-marked watched — steadily shrinking
the list mid-session. Loop "All" could then never wrap back to the first
video (earlier items had dropped out), and prev/next drifted. Snapshot the
queue once at mount (useState lazy init) and step through that frozen list for
the whole session; the live prop is ignored thereafter. Supersedes the earlier
active-item pin with a list-level freeze that also fixes Loop All.