fix: 이미지 대체 시 원본 사용자 아이템 정보 보존

backend/src/db.js

@@ -1152,7 +1152,7 @@ function replaceItemSrc(items, fromSrc, toSrc, toLabel = '') {
   return { changed, items: nextItems }
 }
 
-async function replaceUploadSourceReferences({ fromSrc, toSrc, toLabel = '' }) {
+async function replaceUploadSourceReferences({ fromSrc, toSrc, toLabel = '', updateCustomItemsBySrc = true }) {
   if (!fromSrc || !toSrc || fromSrc === toSrc) return { updatedRows: 0 }
   const normalizedLabel = typeof toLabel === 'string' ? toLabel.trim().slice(0, 60) : ''
 
@@ -1162,9 +1162,11 @@ async function replaceUploadSourceReferences({ fromSrc, toSrc, toLabel = '' }) {
     normalizedLabel
       ? query('UPDATE topic_items SET src = ?, label = ? WHERE src = ?', [toSrc, normalizedLabel, fromSrc])
       : query('UPDATE topic_items SET src = ? WHERE src = ?', [toSrc, fromSrc]),
-    normalizedLabel
-      ? query('UPDATE custom_items SET src = ?, label = ? WHERE src = ?', [toSrc, normalizedLabel, fromSrc])
-      : query('UPDATE custom_items SET src = ? WHERE src = ?', [toSrc, fromSrc]),
+    updateCustomItemsBySrc
+      ? normalizedLabel
+        ? query('UPDATE custom_items SET src = ?, label = ? WHERE src = ?', [toSrc, normalizedLabel, fromSrc])
+        : query('UPDATE custom_items SET src = ? WHERE src = ?', [toSrc, fromSrc])
+      : Promise.resolve({ affectedRows: 0 }),
   ])
 
   let updatedRows = Number(userResult.affectedRows || 0) + Number(topicResult.affectedRows || 0) + Number(topicItemResult.affectedRows || 0) + Number(customItemResult.affectedRows || 0)

backend/src/routes/admin.js

@@ -835,6 +835,7 @@ router.post('/custom-items/:itemId/replace', requireAdmin, async (req, res) => {
     fromSrc: sourceItem.src,
     toSrc: targetItem.src,
     toLabel: targetItem.label || '',
+    updateCustomItemsBySrc: false,
   })
   await markCustomItemReplaced({
     itemId: sourceItem.id,