var(--bs-border-color) was nearly invisible against var(--bs-body-bg) in
both light and dark mode. Switched to color-mix(var(--bs-body-color) 20%)
which guarantees visible contrast regardless of theme. Hover darkens to 30%.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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>
Plant overview and process tree SCSS files had 90+ hardcoded hex colors
that broke dark mode. Replaced all with Bootstrap/Odoo CSS custom
properties (--bs-body-bg, --bs-body-color, --bs-border-color, etc.)
matching the pattern already used in fusion_plating_shopfloor.scss.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
