feat: 공정 관리 API 개선 및 ProcessItem 추가

- ProcessItem 모델 및 마이그레이션 추가
- Process 요청/서비스 로직 수정
- Swagger API 문서 추가

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

app/Services/ProcessService.php

@@ -4,6 +4,7 @@
 
 use App\Models\Process;
 use App\Models\ProcessClassificationRule;
+use App\Models\ProcessItem;
 use Illuminate\Support\Facades\DB;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 
@@ -24,7 +25,7 @@ public function index(array $params)
 
         $query = Process::query()
             ->where('tenant_id', $tenantId)
-            ->with('classificationRules');
+            ->with(['classificationRules', 'processItems.item:id,code,name']);
 
         // 검색어
         if ($q !== '') {
@@ -61,7 +62,7 @@ public function show(int $id)
         $tenantId = $this->tenantId();
 
         $process = Process::where('tenant_id', $tenantId)
-            ->with('classificationRules')
+            ->with(['classificationRules', 'processItems.item:id,code,name'])
             ->find($id);
 
         if (! $process) {
@@ -92,14 +93,18 @@ public function store(array $data)
             }
 
             $rules = $data['classification_rules'] ?? [];
-            unset($data['classification_rules']);
+            $itemIds = $data['item_ids'] ?? [];
+            unset($data['classification_rules'], $data['item_ids']);
 
             $process = Process::create($data);
 
-            // 분류 규칙 저장
+            // 분류 규칙 저장 (패턴 규칙)
             $this->syncClassificationRules($process, $rules);
 
-            return $process->load('classificationRules');
+            // 개별 품목 연결
+            $this->syncProcessItems($process, $itemIds);
+
+            return $process->load(['classificationRules', 'processItems.item:id,code,name']);
         });
     }
 
@@ -125,7 +130,8 @@ public function update(int $id, array $data)
             }
 
             $rules = $data['classification_rules'] ?? null;
-            unset($data['classification_rules']);
+            $itemIds = $data['item_ids'] ?? null;
+            unset($data['classification_rules'], $data['item_ids']);
 
             $process->update($data);
 
@@ -134,7 +140,12 @@ public function update(int $id, array $data)
                 $this->syncClassificationRules($process, $rules);
             }
 
-            return $process->fresh('classificationRules');
+            // 개별 품목 동기화 (전달된 경우만)
+            if ($itemIds !== null) {
+                $this->syncProcessItems($process, $itemIds);
+            }
+
+            return $process->fresh(['classificationRules', 'processItems.item:id,code,name']);
         });
     }
 
@@ -190,7 +201,7 @@ public function toggleActive(int $id)
             'updated_by' => $userId,
         ]);
 
-        return $process->fresh('classificationRules');
+        return $process->fresh(['classificationRules', 'processItems.item:id,code,name']);
     }
 
     /**
@@ -200,7 +211,7 @@ private function generateProcessCode(int $tenantId): string
     {
         $lastProcess = Process::where('tenant_id', $tenantId)
             ->withTrashed()
-            ->orderByRaw("CAST(SUBSTRING(process_code, 3) AS UNSIGNED) DESC")
+            ->orderByRaw('CAST(SUBSTRING(process_code, 3) AS UNSIGNED) DESC')
             ->first();
 
         if ($lastProcess && preg_match('/^P-(\d+)$/', $lastProcess->process_code, $matches)) {
@@ -213,18 +224,18 @@ private function generateProcessCode(int $tenantId): string
     }
 
     /**
-     * 분류 규칙 동기화
+     * 분류 규칙 동기화 (패턴 규칙용)
      */
     private function syncClassificationRules(Process $process, array $rules): void
     {
         // 기존 규칙 삭제
         $process->classificationRules()->delete();
 
-        // 새 규칙 생성
+        // 새 규칙 생성 (패턴 규칙만)
         foreach ($rules as $index => $rule) {
             ProcessClassificationRule::create([
                 'process_id' => $process->id,
-                'registration_type' => $rule['registration_type'] ?? 'pattern',
+                'registration_type' => 'pattern',
                 'rule_type' => $rule['rule_type'],
                 'matching_type' => $rule['matching_type'],
                 'condition_value' => $rule['condition_value'],
@@ -235,6 +246,27 @@ private function syncClassificationRules(Process $process, array $rules): void
         }
     }
 
+    /**
+     * 개별 품목 연결 동기화
+     *
+     * @param  array  $itemIds  품목 ID 배열
+     */
+    private function syncProcessItems(Process $process, array $itemIds): void
+    {
+        // 기존 연결 삭제
+        $process->processItems()->delete();
+
+        // 새 연결 생성
+        foreach ($itemIds as $index => $itemId) {
+            ProcessItem::create([
+                'process_id' => $process->id,
+                'item_id' => $itemId,
+                'priority' => $index,
+                'is_active' => true,
+            ]);
+        }
+    }
+
     /**
      * 드롭다운용 공정 옵션 목록
      */