feat: Introduce HeatmapGrid component, a virtualized table for product data with heatmap visualization, gamme selection, and performance optimizations.

src/features/grid/components/heatmap-grid.tsx

@@ -275,16 +275,6 @@ export function HeatmapGrid({ onSelectionChange }: HeatmapGridProps) {
                 );
             },
         },
-        {
-            accessorKey: "reference",
-            header: () => <div className="text-left w-full">Réf. Fournisseur</div>,
-            size: 130,
-            cell: ({ getValue }) => (
-                <span className="text-[12px] truncate block text-left w-full font-mono-nums opacity-80" style={{ color: "var(--text-primary)" }}>
-                    {getValue<string>() || "-"}
-                </span>
-            ),
-        },
         {
             accessorKey: "libelle1",
             header: "Désignation",