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-api/src/modules/procurement/entities/asset-acquisition.entity.ts

@@ -18,6 +18,12 @@ export enum AcquisitionStatus {
 @Entity({ name: 'asset_acquisitions', schema: 'freight' })
 @Index(['vehicleId', 'acquisitionDate'])
 export class AssetAcquisition extends BaseEntity {
+  /** WHAT was acquired (vehicle, parts, equipment…) — the asset itself. */
+  @Column({ name: 'item_name', type: 'varchar', length: 200, nullable: true })
+  itemName?: string;
+
+  /** Optional link — only when the acquisition IS a fleet vehicle. Parts and
+   *  general procurement stay unlinked so reports don't misattribute them. */
   @Column({ name: 'vehicle_id', type: 'uuid', nullable: true })
   vehicleId?: string;