The aerospace workspace plugin had two issues preventing workspace
indicators from properly showing/hiding:
1. The script expected workspace number as $1 but update_freq routine
calls only provide $NAME environment variable. Now extracts from
either source.
2. Using drawing=off to hide workspaces was unreliable - items wouldn't
consistently reappear. Now uses width=0 with cleared icon/label
content to collapse items instead.
Workspaces now properly appear within 2 seconds when windows are
created or moved, without requiring manual sketchybar --update.