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/dto/procurement.dto.ts

@@ -7,6 +7,7 @@ import {
   IsOptional,
   IsEnum,
   IsBoolean,
+  MinLength,
 } from 'class-validator';
 import { VendorType } from '../entities/vendor.entity';
 import { AcquisitionType, AcquisitionStatus } from '../entities/asset-acquisition.entity';
@@ -72,6 +73,11 @@ export class UpdateVendorDto {
 }
 
 export class CreateAcquisitionDto {
+  /** WHAT was acquired — required so an acquisition can't be saved empty. */
+  @IsString()
+  @MinLength(2)
+  itemName!: string;
+
   @IsOptional()
   @IsUUID()
   vehicleId?: string;
@@ -120,6 +126,11 @@ export class CreateAcquisitionDto {
 }
 
 export class UpdateAcquisitionDto {
+  @IsOptional()
+  @IsString()
+  @MinLength(2)
+  itemName?: string;
+
   @IsOptional()
   @IsUUID()
   vehicleId?: string;