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/constants/URLS.ts

@@ -487,6 +487,8 @@ export const URL_CONSTANTS = {
     RESERVE: "/warehouse-inventory/reserve",
     ARRIVAL_QUEUE: "/warehouse-inventory/arrival-queue",
     OPS_STATS: "/warehouse-inventory/ops-stats",
+    THROUGHPUT: (granularity: 'week' | 'month' | 'year') =>
+      `/warehouse-inventory/throughput?granularity=${granularity}`,
     ZONE_OCCUPANCY: (yardId?: string) =>
       yardId
         ? `/warehouse-inventory/zone-occupancy?yardId=${yardId}`