feat(warehouse): assemble dashboard cockpit + server-side throughput series

- WarehouseDashboardPage now composes the ops KPI strip, lifecycle cards, flow
  charts, zone-occupancy heatmap and demurrage/accrual exceptions into one
  control-tower view; drop the redundant lifecycle donut.
- New GET /warehouse-inventory/throughput (date_trunc time series) replaces the
  client-side buildTrend that downloaded the entire inventory list to bucket it.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/edr-freight-web/backoffice/src/hooks/useWarehouses.ts

@@ -152,6 +152,14 @@ export function useWarehouseOpsStats() {
   });
 }
 
+/** Server-side received-vs-dispatched throughput time series. */
+export function useWarehouseThroughput(granularity: 'week' | 'month' | 'year') {
+  return useQuery({
+    queryKey: ['warehouse-inventory', 'throughput', granularity],
+    queryFn: () => warehouseService.throughput(granularity).then((r) => r.data),
+  });
+}
+
 /** Live per-item fee accrual (storage/demurrage) with alerts. */
 export function useAccrualDashboard(billingCurrency?: 'ETB' | 'USD') {
   return useQuery({