fix(api): показывать подтверждённые метрики OSPF

components/data-grids/ospf-routes-data-grid.tsx

@@ -23,7 +23,7 @@ export interface OspfRouteRow {
   dataUnknown?: boolean
   destination: string
   type: "O" | "O IA" | "O E1" | "O E2"
-  cost: number
+  cost: number | null
   nextHop: string
   via: string
   serverId: string
@@ -79,7 +79,7 @@ function OspfRoutesDataGrid({ routes }: OspfRoutesDataGridProps) {
         accessorKey: "cost",
         header: ({ column }) => <DataGridSortHeader column={column} title="Cost" />,
         cell: ({ row }) => (
-          <span className="font-mono tabular-nums text-center block">{row.original.cost}</span>
+          <span className="font-mono tabular-nums text-center block">{row.original.cost ?? "—"}</span>
         ),
         meta: {
           headerTitle: "Cost",