feat: 견적확정 밸리데이션, 작업지시 통계 공정별 카운트, 입고/재고 개선

- 견적확정 시 업체명/현장명/담당자/연락처 필수 검증 추가 (QuoteService)
- 작업지시 stats API에 by_process 공정별 카운트 반환 추가
- 작업지시 목록/상세 쿼리에 수주 개소(rootNodes) 연관 로딩
- 작업지시 품목에 sourceOrderItem.node 관계 추가
- 입고관리 완료건 수정 허용 및 재고 차이 조정
- work_order_step_progress 테이블 마이그레이션
- receivings 테이블 options 컬럼 추가

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

LOGICAL_RELATIONSHIPS.md

@@ -1,6 +1,6 @@
 # 논리적 데이터베이스 관계 문서
 
-> **자동 생성**: 2026-02-05 15:42:10
+> **자동 생성**: 2026-02-07 01:10:55
 > **소스**: Eloquent 모델 관계 분석
 
 ## 📊 모델별 관계 현황
@@ -308,6 +308,36 @@ ### folders
 **모델**: `App\Models\Folder`
 
 
+### interview_answers
+**모델**: `App\Models\Interview\InterviewAnswer`
+
+- **session()**: belongsTo → `interview_sessions`
+- **question()**: belongsTo → `interview_questions`
+- **template()**: belongsTo → `interview_templates`
+
+### interview_categorys
+**모델**: `App\Models\Interview\InterviewCategory`
+
+- **templates()**: hasMany → `interview_templates`
+- **sessions()**: hasMany → `interview_sessions`
+
+### interview_questions
+**모델**: `App\Models\Interview\InterviewQuestion`
+
+- **template()**: belongsTo → `interview_templates`
+
+### interview_sessions
+**모델**: `App\Models\Interview\InterviewSession`
+
+- **category()**: belongsTo → `interview_categories`
+- **answers()**: hasMany → `interview_answers`
+
+### interview_templates
+**모델**: `App\Models\Interview\InterviewTemplate`
+
+- **category()**: belongsTo → `interview_categories`
+- **questions()**: hasMany → `interview_questions`
+
 ### custom_tabs
 **모델**: `App\Models\ItemMaster\CustomTab`
 
@@ -469,6 +499,8 @@ ### orders
 - **item()**: belongsTo → `items`
 - **sale()**: belongsTo → `sales`
 - **items()**: hasMany → `order_items`
+- **nodes()**: hasMany → `order_nodes`
+- **rootNodes()**: hasMany → `order_nodes`
 - **histories()**: hasMany → `order_histories`
 - **versions()**: hasMany → `order_versions`
 - **workOrders()**: hasMany → `work_orders`
@@ -484,6 +516,7 @@ ### order_items
 **모델**: `App\Models\Orders\OrderItem`
 
 - **order()**: belongsTo → `orders`
+- **node()**: belongsTo → `order_nodes`
 - **item()**: belongsTo → `items`
 - **quote()**: belongsTo → `quotes`
 - **quoteItem()**: belongsTo → `quote_items`
@@ -494,6 +527,14 @@ ### order_item_components
 
 - **orderItem()**: belongsTo → `order_items`
 
+### order_nodes
+**모델**: `App\Models\Orders\OrderNode`
+
+- **parent()**: belongsTo → `order_nodes`
+- **order()**: belongsTo → `orders`
+- **children()**: hasMany → `order_nodes`
+- **items()**: hasMany → `order_items`
+
 ### order_versions
 **모델**: `App\Models\Orders\OrderVersion`
 
@@ -567,6 +608,7 @@ ### work_orders
 - **primaryAssignee()**: hasMany → `work_order_assignees`
 - **items()**: hasMany → `work_order_items`
 - **issues()**: hasMany → `work_order_issues`
+- **stepProgress()**: hasMany → `work_order_step_progress`
 - **shipments()**: hasMany → `shipments`
 - **bendingDetail()**: hasOne → `work_order_bending_details`
 
@@ -594,6 +636,14 @@ ### work_order_items
 - **workOrder()**: belongsTo → `work_orders`
 - **item()**: belongsTo → `items`
 
+### work_order_step_progress
+**모델**: `App\Models\Production\WorkOrderStepProgress`
+
+- **workOrder()**: belongsTo → `work_orders`
+- **processStep()**: belongsTo → `process_steps`
+- **workOrderItem()**: belongsTo → `work_order_items`
+- **completedByUser()**: belongsTo → `users`
+
 ### work_results
 **모델**: `App\Models\Production\WorkResult`