feat(warehouse): P1 dashboard analytics — dwell/aging, cycle-time + on-time, live deltas

Adds the operational-performance layer to the warehouse cockpit:

- Dwell time & aging: dwellStats() (avg + 0-3/4-7/8-14/15+ buckets over
  in-warehouse items) → DwellAgingCard histogram.
- Cycle time & on-time: cycleStats() (arrived→ready→loaded→dispatched stage
  averages + dock-to-dispatch) and onTimeDispatchStats() (share of items that
  left before their storage free-days expired, resolved via the fee engine's
  own rule matching) → CycleTimeCard.
- Live tiles: opsStats() now returns receivedYesterday; KpiStrip renders an
  optional ▲/▼ delta, and the ops strip shows received-today vs yesterday.

New endpoints: GET /warehouse-inventory/{dwell-stats,cycle-stats} and
/warehouse-fees/on-time-dispatch (all guarded). New "Performance" section on
WarehouseDashboardPage. On-time reads N/A when there is no sample / no active
storage rule.

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

apps/edr-freight-web/backoffice/src/pages/warehouses/WarehouseDashboardPage.tsx

@@ -18,6 +18,8 @@ import {
 import { PageContainer, PageHeader } from '@/components/page';
 import {
   AccrualDashboard,
+  CycleTimeCard,
+  DwellAgingCard,
   WarehouseDashboardCharts,
   WarehouseOpsKpiStrip,
   ZoneOccupancyHeatmap,
@@ -125,6 +127,14 @@ export default function WarehouseDashboardPage() {
             <WarehouseDashboardCharts data={data} />
           </Stack>
 
+          <Stack gap="sm">
+            <SectionTitle>Performance</SectionTitle>
+            <SimpleGrid cols={{ base: 1, lg: 2 }} spacing="md">
+              <DwellAgingCard />
+              <CycleTimeCard />
+            </SimpleGrid>
+          </Stack>
+
           <Stack gap="sm">
             <SectionTitle>Zone capacity</SectionTitle>
             <ZoneOccupancyHeatmap />