- /absences/ Reasons multi-checkbox dropdown: z-index 1050 so it
renders above the table rows (was hiding the bottom 4 options).
- /absences/log/confirm/: action-oriented copy, pre-checked
'remove from work log' (the common case), explicit Cancel button.
Was confusing: 'Also remove from WorkLog' didn't read as the
natural fix for the conflict. New language explains both branches
in plain English. +1 regression test for the new copy.