fix: enforce semantic contrast across admin

src/app/admin/users/users-table.tsx

@@ -122,7 +122,7 @@ function getColumns(canEdit: boolean): DataTableColumn<UserRow>[] {
       ],
       render: (value) =>
         value === '1' ? (
-          <span className="flex items-center gap-1.5 text-green-600">
+          <span className="flex items-center gap-1.5 text-[var(--color-success-text-readable)]">
             <Wifi className="h-3.5 w-3.5" /> Online
           </span>
         ) : (