fix(WEB): 수주 등록/수정 옵션 필드 저장 및 담당자 표시 문제 해결

- FormRequest에 options 필드 validation 추가 (StoreOrderRequest, UpdateOrderRequest)
  - shipping_cost_code, receiver, receiver_contact, shipping_address 등
- OrderService.show()에서 client 로드 시 manager_name 필드 추가
- 수주확정/생산지시 되돌리기 기능 추가 (revertOrderConfirmation, revertProductionOrder)
- 견적 calculation_inputs 포함하여 로드

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

app/Services/Quote/QuoteService.php

@@ -359,9 +359,7 @@ public function update(int $id, array $data): Quote
                 'calculation_inputs' => $data['calculation_inputs'] ?? $quote->calculation_inputs,
                 // 견적 옵션 (summary_items, expense_items, price_adjustments, detail_items, price_adjustment_data)
                 // 기존 options와 새 options를 병합 (새 데이터가 기존 데이터를 덮어씀)
-                'options' => isset($data['options'])
-                    ? array_merge($quote->options ?? [], $data['options'])
-                    : $quote->options,
+                'options' => $this->mergeOptions($quote->options, $data['options'] ?? null),
                 // 감사
                 'updated_by' => $userId,
                 'current_revision' => $quote->current_revision + 1,
@@ -711,4 +709,38 @@ public function findBySiteBriefingId(int $siteBriefingId): ?Quote
             ->where('site_briefing_id', $siteBriefingId)
             ->first();
     }
+
+    /**
+     * 견적 options 병합
+     * 기존 options와 새 options를 병합하여 반환
+     */
+    private function mergeOptions(?array $existingOptions, ?array $newOptions): ?array
+    {
+        \Log::info('🔍 [QuoteService::mergeOptions] 시작', [
+            'existingOptions_keys' => $existingOptions ? array_keys($existingOptions) : null,
+            'newOptions_keys' => $newOptions ? array_keys($newOptions) : null,
+            'newOptions_detail_items_count' => isset($newOptions['detail_items']) ? count($newOptions['detail_items']) : 0,
+            'newOptions_price_adjustment_data' => isset($newOptions['price_adjustment_data']) ? 'exists' : 'null',
+        ]);
+
+        if ($newOptions === null) {
+            return $existingOptions;
+        }
+
+        if ($existingOptions === null) {
+            \Log::info('✅ [QuoteService::mergeOptions] 기존 없음, 새 options 반환', [
+                'result_keys' => array_keys($newOptions),
+            ]);
+            return $newOptions;
+        }
+
+        $merged = array_merge($existingOptions, $newOptions);
+
+        \Log::info('✅ [QuoteService::mergeOptions] 병합 완료', [
+            'merged_keys' => array_keys($merged),
+            'merged_detail_items_count' => isset($merged['detail_items']) ? count($merged['detail_items']) : 0,
+        ]);
+
+        return $merged;
+    }
 }