- During a budget switch the rail shows the previous budget's payload
(keepPreviousData) while the new key is empty; the move read that empty
cache, found no tile and silently did nothing. It now acts on the order
the rail rendered.
- A refused move was undone only by a re-read; when that read failed too,
the shelf kept showing the order the user had just been told was not
saved. Moves are now written one at a time (the move rows wait, with a
"saving" note), which makes restoring the shown order correct — the
overlapping-moves problem that ruled a rollback out cannot occur.
peter
c6bf84a578