Two quick deletes in the address book showed the Undo toast for the
second entry only: the callbacks `mutate` takes belong to the latest
call of the list's one mutation, so the first entry's were dropped. The
toast now hangs on each delete's own promise.
Deleting a vaccination, a doctor visit or an address-book entry closed
the sheet with no way back, although all three are soft deletes with a
documented restore route. The vaccination hook had a restore mutation
nobody called; visits and the address book had none.
The two hooks gain a restore mutation, and each delete now confirms
with an Undo toast, the same pattern the illness episode uses. The Undo
runs after the sheet has closed, so it awaits the restore itself and
the hook's own onSuccess refreshes the lists, instead of relying on
callbacks a closed sheet never receives. Restoring an address-book
entry brings the entry back, not the links the delete cleared on the
visits that named it. The three new success toasts are pinned in the
success-affordance guard.
Marc-André Bombeck