When a commissioner increased the team count on a league that had teams
but no draft order set yet, the server created draft slots only for the
newly-added teams. This left the DB with N+K teams but only K slots,
causing the drag-and-drop list to display only the K new teams.
Two fixes:
1. Server: only append new draft slots when an order was already set
(existingSlots.length > 0). If no order exists yet, skip slot creation
so the page correctly treats the order as unset for all teams.
2. Frontend: buildDraftOrderTeams() appends any unslotted teams after the
slotted ones, so a partially-corrupt DB state still shows all teams.
https://claude.ai/code/session_01M3H55gnMxRztJK9KMXqqZo
a7248c48e6