chore: [API] logging, docs, seeder 등 부수 정리

- LOGICAL_RELATIONSHIPS.md 보완
- Legacy5130Calculator 수정
- logging.php 설정 추가
- KyungdongItemSeeder 수정
- docs/INDEX.md, changes 문서 경로 수정

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

LOGICAL_RELATIONSHIPS.md

@@ -1,6 +1,6 @@
 # 논리적 데이터베이스 관계 문서
 
-> **자동 생성**: 2026-03-04 22:33:37
+> **자동 생성**: 2026-03-06 15:12:45
 > **소스**: Eloquent 모델 관계 분석
 
 ## 📊 모델별 관계 현황
@@ -753,6 +753,38 @@ ### lot_sales
 
 - **lot()**: belongsTo → `lots`
 
+### performance_reports
+**모델**: `App\Models\Qualitys\PerformanceReport`
+
+- **qualityDocument()**: belongsTo → `quality_documents`
+- **confirmer()**: belongsTo → `users`
+- **creator()**: belongsTo → `users`
+
+### quality_documents
+**모델**: `App\Models\Qualitys\QualityDocument`
+
+- **client()**: belongsTo → `clients`
+- **inspector()**: belongsTo → `users`
+- **creator()**: belongsTo → `users`
+- **documentOrders()**: hasMany → `quality_document_orders`
+- **locations()**: hasMany → `quality_document_locations`
+- **performanceReport()**: hasOne → `performance_reports`
+
+### quality_document_locations
+**모델**: `App\Models\Qualitys\QualityDocumentLocation`
+
+- **qualityDocument()**: belongsTo → `quality_documents`
+- **qualityDocumentOrder()**: belongsTo → `quality_document_orders`
+- **orderItem()**: belongsTo → `order_items`
+- **document()**: belongsTo → `documents`
+
+### quality_document_orders
+**모델**: `App\Models\Qualitys\QualityDocumentOrder`
+
+- **qualityDocument()**: belongsTo → `quality_documents`
+- **order()**: belongsTo → `orders`
+- **locations()**: hasMany → `quality_document_locations`
+
 ### quotes
 **모델**: `App\Models\Quote\Quote`
 
@@ -929,6 +961,16 @@ ### expense_accounts
 
 - **vendor()**: belongsTo → `clients`
 
+### journal_entrys
+**모델**: `App\Models\Tenants\JournalEntry`
+
+- **lines()**: hasMany → `journal_entry_lines`
+
+### journal_entry_lines
+**모델**: `App\Models\Tenants\JournalEntryLine`
+
+- **journalEntry()**: belongsTo → `journal_entries`
+
 ### leaves
 **모델**: `App\Models\Tenants\Leave`