feat: 동물약 바코드/APC 2줄 표시

- 대표바코드(CD_GOODS.BARCODE)만 표시 (없으면 '없음')
- APC: 02로 시작하는 단위바코드 별도 표시
- APC 없으면 'APC미지정' 빨간 점선 뱃지
- 동물약만 체크 시에만 2줄 표시 (일반약품은 1줄)
- 헤더: '바코드/APC'

backend/templates/admin_products.html

@@ -393,6 +393,15 @@
             background: #d1fae5;
             color: #065f46;
         }
+        .code-apc {
+            background: #ede9fe;
+            color: #7c3aed;
+        }
+        .code-apc-na {
+            background: #fef2f2;
+            color: #dc2626;
+            border: 1px dashed #fca5a5;
+        }
         .code-na {
             background: #f1f5f9;
             color: #94a3b8;
@@ -883,7 +892,7 @@
                         <th style="width:50px;">이미지</th>
                         <th>상품명</th>
                         <th>상품코드</th>
-                        <th>바코드</th>
+                        <th>바코드/APC</th>
                         <th>위치</th>
                         <th>재고</th>
                         <th>판매가</th>
@@ -1043,9 +1052,10 @@
                     <div class="product-supplier ${item.is_set ? 'set' : ''}">${escapeHtml(item.supplier) || ''}</div>
                 </td>
                 <td><span class="code code-drug">${item.drug_code}</span></td>
-                <td>${item.barcode 
-                    ? `<span class="code code-barcode">${item.barcode}</span>` 
-                    : `<span class="code code-na">없음</span>`}</td>
+                <td>${item.is_animal_drug 
+                    ? `<div>${item.barcode ? `<span class="code code-barcode">${item.barcode}</span>` : `<span class="code code-na">없음</span>`}</div>
+                       <div style="margin-top:4px;">${item.apc ? `<span class="code code-apc">${item.apc}</span>` : `<span class="code code-apc-na">APC미지정</span>`}</div>`
+                    : (item.barcode ? `<span class="code code-barcode">${item.barcode}</span>` : `<span class="code code-na">없음</span>`)}</td>
                 <td>${item.location 
                     ? `<span class="location-badge" onclick="openLocationModal('${item.drug_code}', '${escapeHtml(item.product_name)}', '${escapeHtml(item.location)}')">${escapeHtml(item.location)}</span>` 
                     : `<span class="location-badge unset" onclick="openLocationModal('${item.drug_code}', '${escapeHtml(item.product_name)}', '')">미지정</span>`}</td>