feat(procurement): validate acquisition lease fields and enforce bulk-receive capacity

Reject lease start/end and monthly payment on PURCHASE acquisitions (create and
update, validated against the resulting record). Add asset_acquisitions.item_name
column + migration. Enforce warehouse/yard/zone capacity on bulk receive and apply
capacity-counter deltas on save. Adds acquisition-guard spec.

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

apps/edr-freight-web/backoffice/src/services/procurement.service.ts

@@ -20,6 +20,7 @@ export interface Vendor {
 
 export interface AssetAcquisition {
   id: string;
+  itemName?: string | null;
   vehicleId?: string | null;
   vendorId?: string | null;
   acquisitionType: AcquisitionType;