릴리스: v1.4.19 템플릿 아이템 삭제 영향 경고 및 보존 정책 정리

backend/src/routes/admin.js

@@ -18,6 +18,7 @@ const {
   createGameItem,
   updateGameItemLabel,
   updateGameItemDisplayOrder,
+  countTierListsUsingGameItem,
   updateCustomItemLabel,
   updateImageAssetLabel,
   deleteGameItem,
@@ -239,6 +240,15 @@ router.delete(['/games/:gameId/items/:itemId', '/templates/:templateId/items/:it
   res.json({ ok: true })
 })
 
+router.get(['/games/:gameId/items/:itemId/usage', '/templates/:templateId/items/:itemId/usage'], requireAdmin, async (req, res) => {
+  const game = await findGameById(getTemplateIdParam(req))
+  if (!game) return res.status(404).json({ error: 'not_found' })
+  const item = await findGameItemById(req.params.itemId)
+  if (!item || item.gameId !== game.id) return res.status(404).json({ error: 'not_found' })
+  const usage = await countTierListsUsingGameItem(req.params.itemId)
+  res.json({ usage })
+})
+
 router.patch(['/games/:gameId/items/:itemId', '/templates/:templateId/items/:itemId'], requireAdmin, async (req, res) => {
   const schema = z.object({ label: z.string().trim().min(1).max(60) })
   const parsed = schema.safeParse(req.body)