The on-air list was ordered by log time, but a net controller needs the order
the mic goes around. The on-air grid now renders in a controller-owned order:
- A pinned "#" column numbers the round; header sorting is disabled on this
grid (new passOrder prop on RecentQSOsGrid) so a stray click can't reshuffle
it, and any previously-saved sort is stripped on restore.
- ⬆⬇ buttons move the selected station up/down the queue.
- New check-ins append to the end; logged/cancelled stations drop out; the
order is reconciled against the live session list and persisted per net
(localStorage opslog.netOrder.<id>), so a tab switch keeps the round.
- "Log & end" now auto-advances to the NEXT station in pass order.