feat: [quote/quality] Phase 2B 견적 product_code 자동추출 + inspections work_order_id FK

- QuoteService: extractProductCodeFromInputs() 추가, store/update에서 자동 추출
- BackfillQuoteProductCodeCommand: 기존 quotes 25건 product_code 보정
- inspections 테이블에 work_order_id FK 마이그레이션 (nullable, nullOnDelete)
- Inspection↔WorkOrder 양방향 관계 추가
- InspectionService: store/show/index에 work_order_id 처리 + transformToFrontend
- InspectionStoreRequest: work_order_id 검증 규칙 추가

app/Services/InspectionService.php

@@ -33,7 +33,7 @@ public function index(array $params)
 
         $query = Inspection::query()
             ->where('tenant_id', $tenantId)
-            ->with(['inspector:id,name', 'item:id,item_name']);
+            ->with(['inspector:id,name', 'item:id,item_name', 'workOrder:id,work_order_no']);
 
         // 검색어 (검사번호, LOT번호)
         if ($q !== '') {
@@ -126,7 +126,7 @@ public function show(int $id)
         $tenantId = $this->tenantId();
 
         $inspection = Inspection::where('tenant_id', $tenantId)
-            ->with(['inspector:id,name', 'item:id,item_name'])
+            ->with(['inspector:id,name', 'item:id,item_name', 'workOrder:id,work_order_no'])
             ->find($id);
 
         if (! $inspection) {
@@ -183,6 +183,7 @@ public function store(array $data)
                 'inspection_type' => $data['inspection_type'],
                 'request_date' => $data['request_date'] ?? now()->toDateString(),
                 'lot_no' => $data['lot_no'],
+                'work_order_id' => $data['work_order_id'] ?? null,
                 'inspector_id' => $data['inspector_id'] ?? null,
                 'meta' => $meta,
                 'items' => $items,
@@ -200,7 +201,7 @@ public function store(array $data)
                 $inspection->toArray()
             );
 
-            return $this->transformToFrontend($inspection->load(['inspector:id,name']));
+            return $this->transformToFrontend($inspection->load(['inspector:id,name', 'workOrder:id,work_order_no']));
         });
     }
 
@@ -277,7 +278,7 @@ public function update(int $id, array $data)
                 $inspection->fresh()->toArray()
             );
 
-            return $this->transformToFrontend($inspection->load(['inspector:id,name']));
+            return $this->transformToFrontend($inspection->load(['inspector:id,name', 'workOrder:id,work_order_no']));
         });
     }
 
@@ -360,7 +361,7 @@ public function complete(int $id, array $data)
                 $inspection->fresh()->toArray()
             );
 
-            return $this->transformToFrontend($inspection->load(['inspector:id,name']));
+            return $this->transformToFrontend($inspection->load(['inspector:id,name', 'workOrder:id,work_order_no']));
         });
     }
 
@@ -380,6 +381,8 @@ private function transformToFrontend(Inspection $inspection): array
             'inspection_date' => $inspection->inspection_date?->format('Y-m-d'),
             'item_name' => $inspection->item?->item_name ?? ($meta['item_name'] ?? null),
             'lot_no' => $inspection->lot_no,
+            'work_order_id' => $inspection->work_order_id,
+            'work_order_no' => $inspection->workOrder?->work_order_no,
             'process_name' => $meta['process_name'] ?? null,
             'quantity' => $meta['quantity'] ?? null,
             'unit' => $meta['unit'] ?? null,