Cards now have visible borders and elevation shadow in both light/dark
mode. Column count badge restored to high-contrast white-on-gray.
Added HTML5 drag & drop: users can drag work order cards between work
centre columns. Backend endpoint writes workcenter_id on mrp.workorder.
Drop target columns highlight with the action colour.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
ccfae66975