feat: 관리자 대체 아이템 전용 필터 추가

backend/src/db.js

@@ -1152,6 +1152,21 @@ function replaceItemSrc(items, fromSrc, toSrc, toLabel = '') {
   return { changed, items: nextItems }
 }
 
+function replaceItemById(items, itemId, nextSrc, nextLabel = '') {
+  let changed = false
+  const normalizedLabel = typeof nextLabel === 'string' ? nextLabel.trim().slice(0, 60) : ''
+  const nextItems = (items || []).map((item) => {
+    if (item?.id !== itemId) return item
+    changed = true
+    return {
+      ...item,
+      ...(typeof nextSrc === 'string' && nextSrc ? { src: nextSrc } : {}),
+      ...(normalizedLabel ? { label: normalizedLabel } : {}),
+    }
+  })
+  return { changed, items: nextItems }
+}
+
 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) : ''
@@ -1222,6 +1237,40 @@ async function replaceUploadSourceReferences({ fromSrc, toSrc, toLabel = '', upd
   return { updatedRows }
 }
 
+async function updateCustomItemDisplayReferences({ itemId, src = '', label = '' }) {
+  if (!itemId) return { updatedRows: 0 }
+  const normalizedLabel = typeof label === 'string' ? label.trim().slice(0, 60) : ''
+  let updatedRows = 0
+
+  const tierListRows = await query('SELECT id, pool_json FROM tierlists')
+  for (const row of tierListRows) {
+    const replacedPool = replaceItemById(parseJson(row.pool_json, []), itemId, src, normalizedLabel)
+    if (!replacedPool.changed) continue
+    await query('UPDATE tierlists SET pool_json = ?, updated_at = ? WHERE id = ?', [
+      serializeJson(replacedPool.items),
+      now(),
+      row.id,
+    ])
+    updatedRows += 1
+  }
+
+  const requestRows = await query('SELECT id, items_json, board_items_json FROM template_requests')
+  for (const row of requestRows) {
+    const replacedItems = replaceItemById(parseJson(row.items_json, []), itemId, src, normalizedLabel)
+    const replacedBoardItems = replaceItemById(parseJson(row.board_items_json, []), itemId, src, normalizedLabel)
+    if (!replacedItems.changed && !replacedBoardItems.changed) continue
+    await query('UPDATE template_requests SET items_json = ?, board_items_json = ?, updated_at = ? WHERE id = ?', [
+      serializeJson(replacedItems.items),
+      serializeJson(replacedBoardItems.items),
+      now(),
+      row.id,
+    ])
+    updatedRows += 1
+  }
+
+  return { updatedRows }
+}
+
 async function listImageAssets() {
   const rows = await query(
     'SELECT id, content_hash, src, label_override, mime_type, byte_size, original_byte_size, width, height, created_at FROM image_assets ORDER BY created_at DESC'
@@ -1567,6 +1616,14 @@ async function markCustomItemReplaced({ itemId, replacedByItemId = '', replacedB
   return findCustomItemById(itemId)
 }
 
+async function clearCustomItemReplacement(itemId) {
+  await query(
+    'UPDATE custom_items SET replaced_by_item_id = ?, replaced_by_src = ?, replaced_by_label = ?, replaced_at = 0 WHERE id = ?',
+    ['', '', '', itemId]
+  )
+  return findCustomItemById(itemId)
+}
+
 async function updateImageAssetLabel(assetId, label) {
   await query('UPDATE image_assets SET label_override = ? WHERE id = ?', [label, assetId])
   const rows = await query('SELECT id, content_hash, src, label_override, mime_type, byte_size, original_byte_size, width, height, created_at FROM image_assets WHERE id = ? LIMIT 1', [assetId])
@@ -1941,7 +1998,9 @@ async function listCustomItems({ queryText = '', page = 1, limit = 50, filterMod
         case 'library':
           return item.sourceType === 'user' || (item.sourceType === 'template' && !item.isAssetLibraryItem)
         case 'unused-user':
-          return item.sourceType === 'user' && item.usageCount === 0 && item.linkedTemplates.length === 0
+          return item.sourceType === 'user' && ((item.usageCount === 0 && item.linkedTemplates.length === 0) || !!item.replacedAt)
+        case 'replaced-user':
+          return item.sourceType === 'user' && !!item.replacedAt
         case 'unused-admin':
           return item.sourceType === 'asset' || !!item.isAssetLibraryItem
         default:
@@ -1998,7 +2057,7 @@ async function findUnusedCustomItems({ queryText = '' } = {}) {
       ownerEmail: row.email,
       usageCount: usageMap.get(row.id) || 0,
     }))
-    .filter((item) => item.usageCount === 0)
+    .filter((item) => item.usageCount === 0 || !!item.replacedAt)
 }
 
 async function getFavoriteStatsForTierListIds(tierListIds, userId = '') {
@@ -3075,6 +3134,7 @@ module.exports = {
   listReferencedUploadSources,
   listReferencedUploadUsage,
   replaceUploadSourceReferences,
+  updateCustomItemDisplayReferences,
   clearImageOptimizationJobs,
   getImageAssetStats,
   cleanupMissingUploadReferences,
@@ -3086,6 +3146,7 @@ module.exports = {
   deleteTopic,
   updateTopicDisplayOrder,
   updateCustomItemLabel,
+  clearCustomItemReplacement,
   markCustomItemReplaced,
   updateImageAssetLabel,
   createCustomItem,

backend/src/routes/admin.js

@@ -55,6 +55,8 @@ const {
   clearImageOptimizationJobs,
   cleanupMissingUploadReferences,
   replaceUploadSourceReferences,
+  updateCustomItemDisplayReferences,
+  clearCustomItemReplacement,
 } = require('../db')
 const { requireAdmin } = require('../middleware/auth')
 const { createMemoryUpload, writeOptimizedImage, getImageOptimizationQueueState } = require('../lib/image-storage')
@@ -358,7 +360,7 @@ router.get('/custom-items', requireAdmin, async (req, res) => {
     page: z.coerce.number().int().min(1).optional().default(1),
     limit: z.coerce.number().int().min(1).max(200).optional().default(50),
     filter: z
-      .enum(['library', 'all', 'user', 'template', 'asset', 'thumbnail', 'avatar', 'unused-user', 'unused-admin'])
+      .enum(['library', 'all', 'user', 'template', 'asset', 'thumbnail', 'avatar', 'unused-user', 'replaced-user', 'unused-admin'])
       .optional()
       .default('library'),
   })
@@ -837,6 +839,11 @@ router.post('/custom-items/:itemId/replace', requireAdmin, async (req, res) => {
     toLabel: targetItem.label || '',
     updateCustomItemsBySrc: false,
   })
+  const displayResult = await updateCustomItemDisplayReferences({
+    itemId: sourceItem.id,
+    src: targetItem.src,
+    label: targetItem.label || '',
+  })
   await markCustomItemReplaced({
     itemId: sourceItem.id,
     replacedByItemId: targetItem.id || '',
@@ -846,12 +853,31 @@ router.post('/custom-items/:itemId/replace', requireAdmin, async (req, res) => {
 
   res.json({
     ok: true,
-    updatedRows: result.updatedRows || 0,
+    updatedRows: (result.updatedRows || 0) + (displayResult.updatedRows || 0),
     sourceItem,
     targetItem,
   })
 })
 
+router.post('/custom-items/:itemId/restore', requireAdmin, async (req, res) => {
+  const sourceItem = await findCustomItemById(req.params.itemId)
+  if (!sourceItem?.id) return res.status(404).json({ error: 'not_found' })
+  if (!sourceItem.replacedAt) return res.status(409).json({ error: 'not_replaced' })
+
+  const restored = await updateCustomItemDisplayReferences({
+    itemId: sourceItem.id,
+    src: sourceItem.src,
+    label: sourceItem.label || '',
+  })
+  await clearCustomItemReplacement(sourceItem.id)
+
+  res.json({
+    ok: true,
+    restoredRows: restored.updatedRows || 0,
+    item: await findCustomItemById(sourceItem.id),
+  })
+})
+
 router.post('/tierlists/:tierListId/promote-items', requireAdmin, async (req, res) => {
   const schema = z.object({
     topicId: z.string().min(1),