docs: Shipment 모델 관계 추가

- shipments, shipment_items 모델 관계 문서화
- 자동 생성 시간 업데이트

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

LOGICAL_RELATIONSHIPS.md

@@ -1,6 +1,6 @@
 # 논리적 데이터베이스 관계 문서
 
-> **자동 생성**: 2025-12-26 15:08:36
+> **자동 생성**: 2025-12-26 18:32:26
 > **소스**: Eloquent 모델 관계 분석
 
 ## 📊 모델별 관계 현황
@@ -679,6 +679,19 @@ ### setting_field_defs
 
 - **tenantSettings()**: hasMany → `tenant_field_settings`
 
+### shipments
+**모델**: `App\Models\Tenants\Shipment`
+
+- **creator()**: belongsTo → `users`
+- **updater()**: belongsTo → `users`
+- **items()**: hasMany → `shipment_items`
+
+### shipment_items
+**모델**: `App\Models\Tenants\ShipmentItem`
+
+- **shipment()**: belongsTo → `shipments`
+- **stockLot()**: belongsTo → `stock_lots`
+
 ### sites
 **모델**: `App\Models\Tenants\Site`