feat: [bending] 절곡품 전용 테이블 분리 API

- bending_items 전용 테이블 생성 (items.options → 정규 컬럼 승격)
- bending_models 전용 테이블 생성 (가이드레일/케이스/하단마감재 통합)
- bending_data JSON 통합 (별도 테이블 → bending_items.bending_data 컬럼)
- bending_item_mappings 테이블 DROP (bending_items.code에 흡수)
- BendingItemService/BendingCodeService → BendingItem 모델 전환
- GuiderailModelService component 이미지 자동 복사
- ItemsFileController bending_items/bending_models 폴백 지원
- Swagger 스키마 업데이트

app/Http/Resources/Api/V1/GuiderailModelResource.php

@@ -9,10 +9,9 @@ class GuiderailModelResource extends JsonResource
 {
     public function toArray(Request $request): array
     {
-        $components = $this->getOption('components', []);
-        $materialSummary = $this->getOption('material_summary');
+        $components = $this->components ?? [];
+        $materialSummary = $this->material_summary;
 
-        // material_summary가 없으면 components에서 계산
         if (empty($materialSummary) && ! empty($components)) {
             $materialSummary = $this->calcMaterialSummary($components);
         }
@@ -21,29 +20,34 @@ public function toArray(Request $request): array
             'id' => $this->id,
             'code' => $this->code,
             'name' => $this->name,
-            'item_type' => $this->item_type,
-            'item_category' => $this->item_category,
             'is_active' => $this->is_active,
-            // 모델 속성
-            'model_name' => $this->getOption('model_name'),
-            'check_type' => $this->getOption('check_type'),
-            'rail_width' => $this->getOption('rail_width'),
-            'rail_length' => $this->getOption('rail_length'),
-            'finishing_type' => $this->getOption('finishing_type'),
-            'item_sep' => $this->getOption('item_sep'),
-            'model_UA' => $this->getOption('model_UA'),
-            'search_keyword' => $this->getOption('search_keyword'),
-            'author' => $this->getOption('author'),
+            // MNG2 호환
+            'item_type' => 'FG',
+            'item_category' => $this->model_type,
+            // 모델 속성 (정규 컬럼)
+            'model_name' => $this->model_name,
+            'check_type' => $this->check_type,
+            'rail_width' => $this->rail_width ? (int) $this->rail_width : null,
+            'rail_length' => $this->rail_length ? (int) $this->rail_length : null,
+            'finishing_type' => $this->finishing_type,
+            'item_sep' => $this->item_sep,
+            'model_UA' => $this->model_UA,
+            'search_keyword' => $this->search_keyword,
+            'author' => $this->author,
             'memo' => $this->getOption('memo'),
-            'registration_date' => $this->getOption('registration_date'),
-            // 케이스(SHUTTERBOX_MODEL) 전용
-            'exit_direction' => $this->getOption('exit_direction'),
-            'front_bottom_width' => $this->getOption('front_bottom_width'),
-            'box_width' => $this->getOption('box_width'),
-            'box_height' => $this->getOption('box_height'),
-            // 하단마감재(BOTTOMBAR_MODEL) 전용
-            'bar_width' => $this->getOption('bar_width'),
-            'bar_height' => $this->getOption('bar_height'),
+            'registration_date' => $this->registration_date?->format('Y-m-d'),
+            // 케이스 전용
+            'exit_direction' => $this->exit_direction,
+            'front_bottom_width' => $this->front_bottom_width ? (int) $this->front_bottom_width : null,
+            'box_width' => $this->box_width ? (int) $this->box_width : null,
+            'box_height' => $this->box_height ? (int) $this->box_height : null,
+            // 하단마감재 전용
+            'bar_width' => $this->bar_width ? (int) $this->bar_width : null,
+            'bar_height' => $this->bar_height ? (int) $this->bar_height : null,
+            // 수정자
+            'modified_by' => $this->getOption('modified_by'),
+            // 이미지
+            'image_file_id' => $this->getImageFileId(),
             // 부품 조합
             'components' => $components,
             'material_summary' => $materialSummary,
@@ -54,18 +58,36 @@ public function toArray(Request $request): array
         ];
     }
 
+    private function getImageFileId(): ?int
+    {
+        $file = \App\Models\Commons\File::where('document_id', $this->id)
+            ->where('document_type', 'bending_model')
+            ->where('field_key', 'assembly_image')
+            ->whereNull('deleted_at')
+            ->orderByDesc('id')
+            ->first();
+
+        if (! $file) {
+            $file = $this->files()
+                ->where('field_key', 'bending_diagram')
+                ->orderByDesc('id')
+                ->first();
+        }
+
+        return $file?->id;
+    }
+
     private function calcMaterialSummary(array $components): array
     {
         $summary = [];
         foreach ($components as $comp) {
             $material = $comp['material'] ?? null;
-            $widthSum = $comp['width_sum'] ?? 0;
+            $widthSum = $comp['widthsum'] ?? $comp['width_sum'] ?? 0;
             $qty = $comp['quantity'] ?? 1;
             if ($material && $widthSum) {
                 $summary[$material] = ($summary[$material] ?? 0) + ($widthSum * $qty);
             }
         }
-
         return $summary;
     }
 }