Rename a column live

Drag a card, use the arrows, or tap two cards to swap them.

1. 1
   Verify data, then switch all readers
2. 2
   Add the new nullable column
3. 3
   Stop old writes and remove the old column
4. 4
   Write both columns and finish the catch-up pass
5. 5
   Backfill existing rows with a repeatable job