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

backend/index.js

@@ -74,12 +74,14 @@ app.use(async (req, res, next) => {
     await ensureData()
     next()
   } catch (e) {
+    console.error('[backend] db init failed', e)
     res.status(500).json({ error: 'db_init_failed' })
   }
 })
 
 app.use('/api/auth', authRoutes)
 app.use('/api/games', gamesRoutes)
+app.use('/api/topics', gamesRoutes)
 app.use('/api/tierlists', tierListsRoutes)
 app.use('/api/admin', adminRoutes)
 

backend/src/db.js

@@ -8,7 +8,8 @@ const DB_USER = process.env.DB_USER || 'root'
 const DB_PASSWORD = process.env.DB_PASSWORD || ''
 const DB_NAME = process.env.DB_NAME || 'tier_cursor'
 const DB_CONNECTION_LIMIT = process.env.DB_CONNECTION_LIMIT ? Number(process.env.DB_CONNECTION_LIMIT) : 10
-const FREEFORM_GAME_ID = 'freeform'
+const FREEFORM_TOPIC_ID = 'freeform'
+const FREEFORM_GAME_ID = FREEFORM_TOPIC_ID
 
 let poolPromise = null
 let initPromise = null
@@ -72,6 +73,8 @@ function mapGameRow(row) {
   return {
     id: row.id,
     name: row.name,
+    topicId: row.id,
+    topicName: row.name,
     thumbnailSrc: row.thumbnail_src || '',
     isPublic: row.is_public == null ? true : !!row.is_public,
     displayRank: row.display_rank == null ? null : Number(row.display_rank),
@@ -83,7 +86,8 @@ function mapGameItemRow(row) {
   if (!row) return null
   return {
     id: row.id,
-    gameId: row.game_id,
+    topicId: row.topic_id,
+    gameId: row.topic_id,
     src: row.src,
     label: row.label,
     displayOrder: row.display_order == null ? null : Number(row.display_order),
@@ -131,8 +135,10 @@ function mapTierListRow(row) {
     authorName: getUserDisplayName(row),
     authorAccountName: getUserAccountName(row),
     authorAvatarSrc: row.avatar_src || '',
-    gameId: row.game_id,
-    gameName: row.game_name || '',
+    topicId: row.topic_id,
+    topicName: row.topic_name || '',
+    gameId: row.topic_id,
+    gameName: row.topic_name || '',
     title: row.title,
     thumbnailSrc: row.thumbnail_src || '',
     description: row.description || '',
@@ -159,13 +165,17 @@ function mapTemplateRequestRow(row) {
     requesterAccountName: getUserAccountName(row),
     requesterAvatarSrc: row.requester_avatar_src || '',
     sourceTierListId: row.source_tierlist_id || '',
-    sourceGameId: row.source_game_id,
-    sourceGameName: row.source_game_name || '',
+    sourceTopicId: row.source_topic_id,
+    sourceTopicName: row.source_topic_name || '',
+    sourceGameId: row.source_topic_id,
+    sourceGameName: row.source_topic_name || '',
     sourceTierListTitle: row.title_snapshot || '',
     sourceDescription: row.description_snapshot || '',
     thumbnailSrc: row.thumbnail_src_snapshot || '',
-    targetGameId: row.target_game_id || '',
-    targetGameName: row.target_game_name || '',
+    targetTopicId: row.target_topic_id || '',
+    targetTopicName: row.target_topic_name || '',
+    targetGameId: row.target_topic_id || '',
+    targetGameName: row.target_topic_name || '',
     status: row.status,
     items: parseJson(row.items_json, []),
     snapshotGroups: parseJson(row.groups_json, []),
@@ -230,6 +240,32 @@ async function query(sql, params = []) {
   return rows
 }
 
+async function tableExists(name) {
+  const rows = await query(
+    `
+      SELECT TABLE_NAME
+      FROM information_schema.TABLES
+      WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ?
+      LIMIT 1
+    `,
+    [DB_NAME, name]
+  )
+  return rows.length > 0
+}
+
+async function columnExists(tableName, columnName) {
+  const rows = await query(
+    `
+      SELECT COLUMN_NAME
+      FROM information_schema.COLUMNS
+      WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ? AND COLUMN_NAME = ?
+      LIMIT 1
+    `,
+    [DB_NAME, tableName, columnName]
+  )
+  return rows.length > 0
+}
+
 async function closePool() {
   if (!poolPromise) return
   const pool = await poolPromise
@@ -241,6 +277,10 @@ async function closePool() {
 async function ensureSchema() {
   if (initPromise) return initPromise
   initPromise = (async () => {
+    const legacyGamesExists = await tableExists('games')
+    const legacyGameItemsExists = await tableExists('game_items')
+    const legacyFavoriteGamesExists = await tableExists('favorite_games')
+
     await query(`
       CREATE TABLE IF NOT EXISTS users (
         id VARCHAR(64) PRIMARY KEY,
@@ -254,7 +294,7 @@ async function ensureSchema() {
     `)
 
     await query(`
-      CREATE TABLE IF NOT EXISTS games (
+      CREATE TABLE IF NOT EXISTS topics (
         id VARCHAR(120) PRIMARY KEY,
         name VARCHAR(120) NOT NULL,
         thumbnail_src VARCHAR(255) NOT NULL DEFAULT '',
@@ -264,33 +304,52 @@ async function ensureSchema() {
       ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
     `)
 
-    const gameIsPublicColumns = await query("SHOW COLUMNS FROM games LIKE 'is_public'")
+    const gameIsPublicColumns = await query("SHOW COLUMNS FROM topics LIKE 'is_public'")
     if (!gameIsPublicColumns.length) {
-      await query('ALTER TABLE games ADD COLUMN is_public TINYINT(1) NOT NULL DEFAULT 1 AFTER thumbnail_src')
-      await query('UPDATE games SET is_public = 1 WHERE is_public IS NULL')
+      await query('ALTER TABLE topics ADD COLUMN is_public TINYINT(1) NOT NULL DEFAULT 1 AFTER thumbnail_src')
+      await query('UPDATE topics SET is_public = 1 WHERE is_public IS NULL')
     }
 
-    const displayRankColumns = await query("SHOW COLUMNS FROM games LIKE 'display_rank'")
+    const displayRankColumns = await query("SHOW COLUMNS FROM topics LIKE 'display_rank'")
     if (!displayRankColumns.length) {
-      await query('ALTER TABLE games ADD COLUMN display_rank INT NULL DEFAULT NULL AFTER thumbnail_src')
+      await query('ALTER TABLE topics ADD COLUMN display_rank INT NULL DEFAULT NULL AFTER thumbnail_src')
+    }
+
+    if (legacyGamesExists) {
+      await query(`
+        INSERT IGNORE INTO topics (id, name, thumbnail_src, is_public, display_rank, created_at)
+        SELECT id, name, thumbnail_src, COALESCE(is_public, 1), display_rank, created_at
+        FROM games
+      `)
     }
 
     await query(`
-      CREATE TABLE IF NOT EXISTS game_items (
+      CREATE TABLE IF NOT EXISTS topic_items (
         id VARCHAR(64) PRIMARY KEY,
-        game_id VARCHAR(120) NOT NULL,
+        topic_id VARCHAR(120) NOT NULL,
         src VARCHAR(255) NOT NULL,
         label VARCHAR(120) NOT NULL,
         display_order INT NULL DEFAULT NULL,
         created_at BIGINT NOT NULL,
-        INDEX idx_game_items_game_id (game_id),
-        CONSTRAINT fk_game_items_game FOREIGN KEY (game_id) REFERENCES games(id) ON DELETE CASCADE
+        INDEX idx_topic_items_topic_id (topic_id),
+        CONSTRAINT fk_topic_items_topic FOREIGN KEY (topic_id) REFERENCES topics(id) ON DELETE CASCADE
       ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
     `)
 
-    const gameItemDisplayOrderColumns = await query("SHOW COLUMNS FROM game_items LIKE 'display_order'")
+    const gameItemDisplayOrderColumns = await query("SHOW COLUMNS FROM topic_items LIKE 'display_order'")
     if (!gameItemDisplayOrderColumns.length) {
-      await query('ALTER TABLE game_items ADD COLUMN display_order INT NULL DEFAULT NULL AFTER label')
+      await query('ALTER TABLE topic_items ADD COLUMN display_order INT NULL DEFAULT NULL AFTER label')
+    }
+
+    if (legacyGameItemsExists) {
+      const legacyItemDisplayOrderColumns = await query("SHOW COLUMNS FROM game_items LIKE 'display_order'")
+      await query(
+        `
+          INSERT IGNORE INTO topic_items (id, topic_id, src, label, display_order, created_at)
+          SELECT id, game_id, src, label, ${legacyItemDisplayOrderColumns.length ? 'display_order' : 'NULL'}, created_at
+          FROM game_items
+        `
+      )
     }
 
     await query(`
@@ -309,7 +368,7 @@ async function ensureSchema() {
       CREATE TABLE IF NOT EXISTS tierlists (
         id VARCHAR(64) PRIMARY KEY,
         author_id VARCHAR(64) NOT NULL,
-        game_id VARCHAR(120) NOT NULL,
+        topic_id VARCHAR(120) NOT NULL,
         title VARCHAR(120) NOT NULL,
         thumbnail_src VARCHAR(255) NOT NULL DEFAULT '',
         description TEXT NOT NULL,
@@ -324,10 +383,10 @@ async function ensureSchema() {
         created_at BIGINT NOT NULL,
         updated_at BIGINT NOT NULL,
         INDEX idx_tierlists_author_id (author_id),
-        INDEX idx_tierlists_game_id (game_id),
-        INDEX idx_tierlists_public_game_updated (is_public, game_id, updated_at),
+        INDEX idx_tierlists_topic_id (topic_id),
+        INDEX idx_tierlists_public_topic_updated (is_public, topic_id, updated_at),
         CONSTRAINT fk_tierlists_author FOREIGN KEY (author_id) REFERENCES users(id) ON DELETE CASCADE,
-        CONSTRAINT fk_tierlists_game FOREIGN KEY (game_id) REFERENCES games(id) ON DELETE CASCADE
+        CONSTRAINT fk_tierlists_topic FOREIGN KEY (topic_id) REFERENCES topics(id) ON DELETE CASCADE
       ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
     `)
 
@@ -344,17 +403,25 @@ async function ensureSchema() {
     `)
 
     await query(`
-      CREATE TABLE IF NOT EXISTS favorite_games (
+      CREATE TABLE IF NOT EXISTS favorite_topics (
         user_id VARCHAR(64) NOT NULL,
-        game_id VARCHAR(120) NOT NULL,
+        topic_id VARCHAR(120) NOT NULL,
         created_at BIGINT NOT NULL,
-        PRIMARY KEY (user_id, game_id),
-        INDEX idx_favorite_games_game_id (game_id),
-        CONSTRAINT fk_favorite_games_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
-        CONSTRAINT fk_favorite_games_game FOREIGN KEY (game_id) REFERENCES games(id) ON DELETE CASCADE
+        PRIMARY KEY (user_id, topic_id),
+        INDEX idx_favorite_topics_topic_id (topic_id),
+        CONSTRAINT fk_favorite_topics_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+        CONSTRAINT fk_favorite_topics_topic FOREIGN KEY (topic_id) REFERENCES topics(id) ON DELETE CASCADE
       ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
     `)
 
+    if (legacyFavoriteGamesExists) {
+      await query(`
+        INSERT IGNORE INTO favorite_topics (user_id, topic_id, created_at)
+        SELECT user_id, game_id, created_at
+        FROM favorite_games
+      `)
+    }
+
     await query(`
       CREATE TABLE IF NOT EXISTS image_assets (
         id VARCHAR(64) PRIMARY KEY,
@@ -399,8 +466,8 @@ async function ensureSchema() {
         request_type VARCHAR(20) NOT NULL,
         requester_id VARCHAR(64) NOT NULL,
         source_tierlist_id VARCHAR(64) NOT NULL,
-        source_game_id VARCHAR(120) NOT NULL,
-        target_game_id VARCHAR(120) NOT NULL DEFAULT '',
+        source_topic_id VARCHAR(120) NOT NULL,
+        target_topic_id VARCHAR(120) NOT NULL DEFAULT '',
         status VARCHAR(20) NOT NULL DEFAULT 'pending',
         title_snapshot VARCHAR(120) NOT NULL,
         description_snapshot TEXT NOT NULL,
@@ -424,17 +491,23 @@ async function ensureSchema() {
     if (!templateRequestTypeColumns.length) {
       await query("ALTER TABLE template_requests ADD COLUMN request_type VARCHAR(20) NOT NULL DEFAULT 'create' AFTER id")
     }
-    const templateRequestSourceGameColumns = await query("SHOW COLUMNS FROM template_requests LIKE 'source_game_id'")
-    if (!templateRequestSourceGameColumns.length) {
-      await query("ALTER TABLE template_requests ADD COLUMN source_game_id VARCHAR(120) NOT NULL DEFAULT 'freeform' AFTER source_tierlist_id")
+    const hasSourceTopicId = await columnExists('template_requests', 'source_topic_id')
+    if (!hasSourceTopicId) {
+      await query("ALTER TABLE template_requests ADD COLUMN source_topic_id VARCHAR(120) NOT NULL DEFAULT 'freeform' AFTER source_tierlist_id")
+      if (await columnExists('template_requests', 'source_game_id')) {
+        await query('UPDATE template_requests SET source_topic_id = source_game_id WHERE source_topic_id = ?', [FREEFORM_TOPIC_ID])
+      }
     }
-    const templateRequestTargetGameColumns = await query("SHOW COLUMNS FROM template_requests LIKE 'target_game_id'")
-    if (!templateRequestTargetGameColumns.length) {
-      await query("ALTER TABLE template_requests ADD COLUMN target_game_id VARCHAR(120) NOT NULL DEFAULT '' AFTER source_game_id")
+    const hasTargetTopicId = await columnExists('template_requests', 'target_topic_id')
+    if (!hasTargetTopicId) {
+      await query("ALTER TABLE template_requests ADD COLUMN target_topic_id VARCHAR(120) NOT NULL DEFAULT '' AFTER source_topic_id")
+      if (await columnExists('template_requests', 'target_game_id')) {
+        await query("UPDATE template_requests SET target_topic_id = target_game_id WHERE target_topic_id = ''")
+      }
     }
     const templateRequestStatusColumns = await query("SHOW COLUMNS FROM template_requests LIKE 'status'")
     if (!templateRequestStatusColumns.length) {
-      await query("ALTER TABLE template_requests ADD COLUMN status VARCHAR(20) NOT NULL DEFAULT 'pending' AFTER target_game_id")
+      await query("ALTER TABLE template_requests ADD COLUMN status VARCHAR(20) NOT NULL DEFAULT 'pending' AFTER target_topic_id")
     }
     const templateRequestGroupsColumns = await query("SHOW COLUMNS FROM template_requests LIKE 'groups_json'")
     if (!templateRequestGroupsColumns.length) {
@@ -453,6 +526,13 @@ async function ensureSchema() {
     if (!tierListThumbnailColumns.length) {
       await query("ALTER TABLE tierlists ADD COLUMN thumbnail_src VARCHAR(255) NOT NULL DEFAULT '' AFTER title")
     }
+    const tierListTopicIdColumns = await query("SHOW COLUMNS FROM tierlists LIKE 'topic_id'")
+    if (!tierListTopicIdColumns.length) {
+      await query("ALTER TABLE tierlists ADD COLUMN topic_id VARCHAR(120) NOT NULL DEFAULT 'freeform' AFTER author_id")
+      if (await columnExists('tierlists', 'game_id')) {
+        await query('UPDATE tierlists SET topic_id = game_id WHERE topic_id = ?', [FREEFORM_TOPIC_ID])
+      }
+    }
     const tierListShowNamesColumns = await query("SHOW COLUMNS FROM tierlists LIKE 'show_character_names'")
     if (!tierListShowNamesColumns.length) {
       await query("ALTER TABLE tierlists ADD COLUMN show_character_names TINYINT(1) NOT NULL DEFAULT 0 AFTER is_public")
@@ -478,19 +558,19 @@ async function ensureSchema() {
 
     await query(
       `
-        INSERT INTO games (id, name, thumbnail_src, created_at)
+        INSERT INTO topics (id, name, thumbnail_src, created_at)
         VALUES (?, ?, ?, ?)
         ON DUPLICATE KEY UPDATE name = VALUES(name)
       `,
-      [FREEFORM_GAME_ID, '직접 티어표 만들기', '', now()]
+      [FREEFORM_TOPIC_ID, '직접 티어표 만들기', '', now()]
     )
 
-    const countRows = await query('SELECT COUNT(*) AS count FROM games')
+    const countRows = await query('SELECT COUNT(*) AS count FROM topics')
     if (Number(countRows[0]?.count || 0) <= 1) {
       const createdAt = now()
       await query(
         `
-          INSERT INTO games (id, name, thumbnail_src, created_at)
+          INSERT INTO topics (id, name, thumbnail_src, created_at)
           VALUES
             (?, ?, ?, ?),
             (?, ?, ?, ?)
@@ -500,7 +580,7 @@ async function ensureSchema() {
 
       await query(
         `
-          INSERT INTO game_items (id, game_id, src, label, created_at)
+          INSERT INTO topic_items (id, topic_id, src, label, created_at)
           VALUES
             (?, ?, ?, ?, ?),
             (?, ?, ?, ?, ?)
@@ -662,7 +742,7 @@ async function listGames(currentUserId = '', options = {}) {
   const rows = await query(
     `
       SELECT id, name, thumbnail_src, is_public, display_rank, created_at
-      FROM games
+      FROM topics
       WHERE id <> ?
       ${includePrivate ? '' : 'AND is_public = 1'}
       ORDER BY
@@ -671,13 +751,13 @@ async function listGames(currentUserId = '', options = {}) {
         created_at DESC,
         name ASC
     `,
-    [FREEFORM_GAME_ID]
+    [FREEFORM_TOPIC_ID]
   )
   const games = rows.map(mapGameRow)
   if (!currentUserId) return games.map((game) => ({ ...game, isFavorited: false }))
 
-  const favoriteRows = await query('SELECT game_id FROM favorite_games WHERE user_id = ?', [currentUserId])
-  const favoriteSet = new Set(favoriteRows.map((row) => row.game_id))
+  const favoriteRows = await query('SELECT topic_id FROM favorite_topics WHERE user_id = ?', [currentUserId])
+  const favoriteSet = new Set(favoriteRows.map((row) => row.topic_id))
   return games.map((game) => ({
     ...game,
     isFavorited: favoriteSet.has(game.id),
@@ -685,16 +765,16 @@ async function listGames(currentUserId = '', options = {}) {
 }
 
 async function findGameById(id) {
-  const rows = await query('SELECT id, name, thumbnail_src, is_public, display_rank, created_at FROM games WHERE id = ? LIMIT 1', [id])
+  const rows = await query('SELECT id, name, thumbnail_src, is_public, display_rank, created_at FROM topics WHERE id = ? LIMIT 1', [id])
   return mapGameRow(rows[0])
 }
 
 async function listGameItems(gameId) {
   const rows = await query(
     `
-      SELECT id, game_id, src, label, display_order, created_at
-      FROM game_items
-      WHERE game_id = ?
+      SELECT id, topic_id, src, label, display_order, created_at
+      FROM topic_items
+      WHERE topic_id = ?
       ORDER BY
         CASE WHEN display_order IS NULL THEN 1 ELSE 0 END ASC,
         display_order ASC,
@@ -707,7 +787,7 @@ async function listGameItems(gameId) {
 }
 
 async function findGameItemById(itemId) {
-  const rows = await query('SELECT id, game_id, src, label, display_order, created_at FROM game_items WHERE id = ? LIMIT 1', [itemId])
+  const rows = await query('SELECT id, topic_id, src, label, display_order, created_at FROM topic_items WHERE id = ? LIMIT 1', [itemId])
   return mapGameItemRow(rows[0])
 }
 
@@ -719,7 +799,7 @@ async function getGameDetail(gameId) {
 }
 
 async function createGame({ id, name, isPublic = true }) {
-  await query('INSERT INTO games (id, name, thumbnail_src, is_public, display_rank, created_at) VALUES (?, ?, ?, ?, ?, ?)', [
+  await query('INSERT INTO topics (id, name, thumbnail_src, is_public, display_rank, created_at) VALUES (?, ?, ?, ?, ?, ?)', [
     id,
     name,
     '',
@@ -731,12 +811,12 @@ async function createGame({ id, name, isPublic = true }) {
 }
 
 async function updateGameThumbnail(gameId, thumbnailSrc) {
-  await query('UPDATE games SET thumbnail_src = ? WHERE id = ?', [thumbnailSrc, gameId])
+  await query('UPDATE topics SET thumbnail_src = ? WHERE id = ?', [thumbnailSrc, gameId])
   return findGameById(gameId)
 }
 
 async function updateGameVisibility(gameId, isPublic) {
-  await query('UPDATE games SET is_public = ? WHERE id = ?', [isPublic ? 1 : 0, gameId])
+  await query('UPDATE topics SET is_public = ? WHERE id = ?', [isPublic ? 1 : 0, gameId])
   return findGameById(gameId)
 }
 
@@ -838,8 +918,8 @@ async function listUnusedImageAssets({ limit = 100, minAgeHours = 24 } = {}) {
 
   const [userRows, gameRows, gameItemRows, customItemRows, tierListRows, templateRequestRows] = await Promise.all([
     query("SELECT avatar_src FROM users WHERE avatar_src <> ''"),
-    query("SELECT thumbnail_src FROM games WHERE thumbnail_src <> ''"),
-    query("SELECT src FROM game_items WHERE src <> ''"),
+    query("SELECT thumbnail_src FROM topics WHERE thumbnail_src <> ''"),
+    query("SELECT src FROM topic_items WHERE src <> ''"),
     query("SELECT src FROM custom_items WHERE src <> ''"),
     query("SELECT thumbnail_src, pool_json FROM tierlists"),
     query("SELECT thumbnail_src_snapshot, items_json, board_items_json FROM template_requests"),
@@ -891,8 +971,8 @@ async function listReferencedUploadUsage() {
 
   const [userRows, gameRows, gameItemRows, customItemRows, tierListRows, templateRequestRows] = await Promise.all([
     query("SELECT avatar_src FROM users WHERE avatar_src <> ''"),
-    query("SELECT thumbnail_src FROM games WHERE thumbnail_src <> ''"),
-    query("SELECT src FROM game_items WHERE src <> ''"),
+    query("SELECT thumbnail_src FROM topics WHERE thumbnail_src <> ''"),
+    query("SELECT src FROM topic_items WHERE src <> ''"),
     query("SELECT src FROM custom_items WHERE src <> ''"),
     query("SELECT id, thumbnail_src, pool_json FROM tierlists"),
     query("SELECT id, thumbnail_src_snapshot, items_json, board_items_json FROM template_requests"),
@@ -934,8 +1014,8 @@ async function replaceUploadSourceReferences({ fromSrc, toSrc }) {
 
   const [userResult, gameResult, gameItemResult, customItemResult] = await Promise.all([
     query('UPDATE users SET avatar_src = ? WHERE avatar_src = ?', [toSrc, fromSrc]),
-    query('UPDATE games SET thumbnail_src = ? WHERE thumbnail_src = ?', [toSrc, fromSrc]),
-    query('UPDATE game_items SET src = ? WHERE src = ?', [toSrc, fromSrc]),
+    query('UPDATE topics SET thumbnail_src = ? WHERE thumbnail_src = ?', [toSrc, fromSrc]),
+    query('UPDATE topic_items SET src = ? WHERE src = ?', [toSrc, fromSrc]),
     query('UPDATE custom_items SET src = ? WHERE src = ?', [toSrc, fromSrc]),
   ])
 
@@ -1099,8 +1179,8 @@ async function cleanupMissingUploadReferences() {
 
   const [userRows, gameRows, gameItemRows, customItemRows, tierListRows, templateRequestRows] = await Promise.all([
     query("SELECT id, avatar_src FROM users WHERE avatar_src <> ''"),
-    query("SELECT id, thumbnail_src FROM games WHERE thumbnail_src <> ''"),
-    query("SELECT id, src FROM game_items WHERE src <> ''"),
+    query("SELECT id, thumbnail_src FROM topics WHERE thumbnail_src <> ''"),
+    query("SELECT id, src FROM topic_items WHERE src <> ''"),
     query("SELECT id, src FROM custom_items WHERE src <> ''"),
     query("SELECT id, thumbnail_src, groups_json, pool_json FROM tierlists"),
     query("SELECT id, thumbnail_src_snapshot, groups_json, items_json, board_items_json FROM template_requests"),
@@ -1114,7 +1194,7 @@ async function cleanupMissingUploadReferences() {
 
   for (const row of gameRows) {
     if (await fileExistsForUploadSrc(row.thumbnail_src)) continue
-    await query('UPDATE games SET thumbnail_src = ? WHERE id = ?', ['', row.id])
+    await query('UPDATE topics SET thumbnail_src = ? WHERE id = ?', ['', row.id])
     stats.clearedGameThumbnails += 1
   }
 
@@ -1269,10 +1349,10 @@ async function clearImageOptimizationJobs({ month } = {}) {
 }
 async function createGameItem({ id, gameId, src, label }) {
   const createdAt = now()
-  const minOrderRows = await query('SELECT MIN(display_order) AS min_display_order FROM game_items WHERE game_id = ?', [gameId])
+  const minOrderRows = await query('SELECT MIN(display_order) AS min_display_order FROM topic_items WHERE topic_id = ?', [gameId])
   const nextDisplayOrder =
     minOrderRows[0]?.min_display_order == null ? 0 : Number(minOrderRows[0].min_display_order) - 1
-  await query('INSERT INTO game_items (id, game_id, src, label, display_order, created_at) VALUES (?, ?, ?, ?, ?, ?)', [
+  await query('INSERT INTO topic_items (id, topic_id, src, label, display_order, created_at) VALUES (?, ?, ?, ?, ?, ?)', [
     id,
     gameId,
     src,
@@ -1280,13 +1360,13 @@ async function createGameItem({ id, gameId, src, label }) {
     nextDisplayOrder,
     createdAt,
   ])
-  const rows = await query('SELECT id, game_id, src, label, display_order, created_at FROM game_items WHERE id = ? LIMIT 1', [id])
+  const rows = await query('SELECT id, topic_id, src, label, display_order, created_at FROM topic_items WHERE id = ? LIMIT 1', [id])
   return mapGameItemRow(rows[0])
 }
 
 async function updateGameItemLabel(itemId, label) {
-  await query('UPDATE game_items SET label = ? WHERE id = ?', [label, itemId])
-  const rows = await query('SELECT id, game_id, src, label, display_order, created_at FROM game_items WHERE id = ? LIMIT 1', [itemId])
+  await query('UPDATE topic_items SET label = ? WHERE id = ?', [label, itemId])
+  const rows = await query('SELECT id, topic_id, src, label, display_order, created_at FROM topic_items WHERE id = ? LIMIT 1', [itemId])
   return mapGameItemRow(rows[0])
 }
 
@@ -1299,7 +1379,7 @@ async function updateGameItemDisplayOrder(gameId, itemIds) {
   const finalIds = [...orderedIds, ...remainingIds]
 
   await Promise.all(
-    finalIds.map((itemId, index) => query('UPDATE game_items SET display_order = ? WHERE id = ? AND game_id = ?', [index + 1, itemId, gameId]))
+    finalIds.map((itemId, index) => query('UPDATE topic_items SET display_order = ? WHERE id = ? AND topic_id = ?', [index + 1, itemId, gameId]))
   )
 
   return listGameItems(gameId)
@@ -1333,50 +1413,50 @@ async function updateImageAssetLabel(assetId, label) {
   return mapImageAssetRow(rows[0])
 }
 
+async function countTierListsUsingGameItem(itemId) {
+  if (!itemId) return { totalCount: 0, publicCount: 0, privateCount: 0 }
+
+  const rows = await query(
+    `
+      SELECT id, is_public, groups_json, pool_json
+      FROM tierlists
+    `
+  )
+
+  let totalCount = 0
+  let publicCount = 0
+  let privateCount = 0
+
+  rows.forEach((row) => {
+    const groups = parseJson(row.groups_json, [])
+    const pool = parseJson(row.pool_json, [])
+    const inGroups = groups.some((group) => (group?.itemIds || []).includes(itemId))
+    const inPool = pool.some((item) => item?.id === itemId)
+    if (!inGroups && !inPool) return
+    totalCount += 1
+    if (row.is_public) publicCount += 1
+    else privateCount += 1
+  })
+
+  return { totalCount, publicCount, privateCount }
+}
+
 async function deleteGameItem(itemId) {
-  const gameItemRows = await query('SELECT game_id FROM game_items WHERE id = ? LIMIT 1', [itemId])
-  const gameId = gameItemRows[0]?.game_id
-
-  if (gameId) {
-    const tierListRows = await query(
-      `
-        SELECT id, author_id, game_id, title, description, is_public, groups_json, pool_json, created_at, updated_at
-        FROM tierlists
-        WHERE game_id = ?
-      `,
-      [gameId]
-    )
-
-    for (const row of tierListRows) {
-      const tierList = mapTierListRow(row)
-      const nextGroups = (tierList.groups || []).map((group) => ({
-        ...group,
-        itemIds: (group.itemIds || []).filter((id) => id !== itemId),
-      }))
-      const nextPool = (tierList.pool || []).filter((item) => item.id !== itemId)
-
-      await query(
-        'UPDATE tierlists SET groups_json = ?, pool_json = ?, updated_at = ? WHERE id = ?',
-        [serializeJson(nextGroups), serializeJson(nextPool), now(), tierList.id]
-      )
-    }
-  }
-
-  await query('DELETE FROM game_items WHERE id = ?', [itemId])
+  await query('DELETE FROM topic_items WHERE id = ?', [itemId])
 }
 
 async function deleteGame(gameId) {
-  await query('DELETE FROM games WHERE id = ?', [gameId])
+  await query('DELETE FROM topics WHERE id = ?', [gameId])
 }
 
 async function updateGameDisplayOrder(gameIds) {
-  const normalizedIds = Array.from(new Set((gameIds || []).filter((id) => id && id !== FREEFORM_GAME_ID))).slice(0, 50)
+  const normalizedIds = Array.from(new Set((gameIds || []).filter((id) => id && id !== FREEFORM_TOPIC_ID))).slice(0, 50)
 
-  await query('UPDATE games SET display_rank = NULL WHERE id <> ?', [FREEFORM_GAME_ID])
+  await query('UPDATE topics SET display_rank = NULL WHERE id <> ?', [FREEFORM_TOPIC_ID])
 
   await Promise.all(
     normalizedIds.map((gameId, index) =>
-      query('UPDATE games SET display_rank = ? WHERE id = ? AND id <> ?', [index + 1, gameId, FREEFORM_GAME_ID])
+      query('UPDATE topics SET display_rank = ? WHERE id = ? AND id <> ?', [index + 1, gameId, FREEFORM_TOPIC_ID])
     )
   )
 
@@ -1438,9 +1518,9 @@ async function findCustomItemById(id) {
 async function getCustomItemUsageMeta() {
   const rows = await query(
     `
-      SELECT t.game_id, g.name AS game_name, t.groups_json, t.pool_json
+      SELECT t.topic_id, tp.name AS topic_name, t.groups_json, t.pool_json
       FROM tierlists t
-      LEFT JOIN games g ON g.id = t.game_id
+      LEFT JOIN topics tp ON tp.id = t.topic_id
     `
   )
   const usageMap = new Map()
@@ -1465,13 +1545,13 @@ async function getCustomItemUsageMeta() {
       }
     })
 
-    if (!row.game_id) return
+    if (!row.topic_id) return
 
     seenItemIds.forEach((itemId) => {
       if (!linkedGamesMap.has(itemId)) linkedGamesMap.set(itemId, new Map())
-      linkedGamesMap.get(itemId).set(row.game_id, {
-        id: row.game_id,
-        name: row.game_name || row.game_id,
+      linkedGamesMap.get(itemId).set(row.topic_id, {
+        id: row.topic_id,
+        name: row.topic_name || row.topic_id,
       })
     })
   })
@@ -1511,14 +1591,14 @@ async function listCustomItems({ queryText = '', page = 1, limit = 50, filterMod
       `
         SELECT
           gi.id,
-          gi.game_id,
+          gi.topic_id,
           gi.src,
           gi.label,
           gi.created_at,
-          g.name AS game_name
-        FROM game_items gi
-        INNER JOIN games g ON g.id = gi.game_id
-        ${hasQuery ? 'WHERE gi.label LIKE ? OR gi.src LIKE ? OR gi.game_id LIKE ? OR g.name LIKE ?' : ''}
+          tp.name AS topic_name
+        FROM topic_items gi
+        INNER JOIN topics tp ON tp.id = gi.topic_id
+        ${hasQuery ? 'WHERE gi.label LIKE ? OR gi.src LIKE ? OR gi.topic_id LIKE ? OR tp.name LIKE ?' : ''}
         ORDER BY gi.created_at DESC
       `,
       hasQuery ? [search, search, search, search] : []
@@ -1540,9 +1620,9 @@ async function listCustomItems({ queryText = '', page = 1, limit = 50, filterMod
   gameItemRows.forEach((row) => {
     if (!row?.src) return
     if (!templateLinkedBySrc.has(row.src)) templateLinkedBySrc.set(row.src, new Map())
-    templateLinkedBySrc.get(row.src).set(row.game_id, {
-      id: row.game_id,
-      name: row.game_name || row.game_id,
+    templateLinkedBySrc.get(row.src).set(row.topic_id, {
+      id: row.topic_id,
+      name: row.topic_name || row.topic_id,
     })
   })
 
@@ -1593,15 +1673,15 @@ async function listCustomItems({ queryText = '', page = 1, limit = 50, filterMod
     src: row.src,
     label: row.label,
     createdAt: Number(row.created_at),
-    ownerName: row.game_name || row.game_id,
+    ownerName: row.topic_name || row.topic_id,
     ownerEmail: '',
     usageCount: (templateLinkedBySrc.get(row.src) || new Map()).size,
     linkedGames: Array.from((templateLinkedBySrc.get(row.src) || new Map()).values()),
     sourceType: 'template',
     sourceLabel: '관리자 템플릿',
     canDelete: true,
-    sourceGameId: row.game_id,
-    sourceGameName: row.game_name || row.game_id,
+    sourceGameId: row.topic_id,
+    sourceGameName: row.topic_name || row.topic_id,
   }))
 
   const baseItems = [...customItems, ...templateItems, ...assetLibraryItems]
@@ -1767,12 +1847,12 @@ function applyFavoriteMetaToTierLists(tierLists, favoriteStats) {
   }))
 }
 
-async function listPublicTierLists(gameId, currentUserId = '', queryText = '') {
+async function listPublicTierLists(topicId, currentUserId = '', queryText = '') {
   const params = []
   let whereClause = 'WHERE t.is_public = 1'
-  if (gameId) {
-    whereClause += ' AND t.game_id = ?'
-    params.push(gameId)
+  if (topicId) {
+    whereClause += ' AND t.topic_id = ?'
+    params.push(topicId)
   }
   if ((queryText || '').trim()) {
     const search = `%${queryText.trim()}%`
@@ -1784,7 +1864,7 @@ async function listPublicTierLists(gameId, currentUserId = '', queryText = '') {
     `
       SELECT
         t.id,
-        t.game_id,
+        t.topic_id,
         t.title,
         t.thumbnail_src,
         t.created_at,
@@ -1804,7 +1884,8 @@ async function listPublicTierLists(gameId, currentUserId = '', queryText = '') {
 
   const tierLists = rows.map((row) => ({
     id: row.id,
-    gameId: row.game_id,
+    topicId: row.topic_id,
+    gameId: row.topic_id,
     title: row.title,
     thumbnailSrc: row.thumbnail_src || '',
     createdAt: Number(row.created_at),
@@ -1830,7 +1911,7 @@ async function listFavoriteTierLists(userId, { queryText = '', sort = 'favorited
 
   if ((queryText || '').trim()) {
     const search = `%${queryText.trim()}%`
-    whereClause += ' AND (t.title LIKE ? OR g.name LIKE ? OR u.nickname LIKE ? OR u.email LIKE ?)'
+    whereClause += ' AND (t.title LIKE ? OR tp.name LIKE ? OR u.nickname LIKE ? OR u.email LIKE ?)'
     params.push(search, search, search, search)
   }
 
@@ -1846,8 +1927,8 @@ async function listFavoriteTierLists(userId, { queryText = '', sort = 'favorited
       SELECT
         t.id,
         t.author_id,
-        t.game_id,
-        g.name AS game_name,
+        t.topic_id,
+        tp.name AS topic_name,
         t.title,
         t.thumbnail_src,
         t.description,
@@ -1873,7 +1954,7 @@ async function listFavoriteTierLists(userId, { queryText = '', sort = 'favorited
       FROM favorite_tierlists f
       INNER JOIN tierlists t ON t.id = f.tierlist_id
       INNER JOIN users u ON u.id = t.author_id
-      INNER JOIN games g ON g.id = t.game_id
+      INNER JOIN topics tp ON tp.id = t.topic_id
       ${whereClause}
       ${orderClause}
     `,
@@ -1893,7 +1974,7 @@ async function listUserTierLists(userId) {
     `
       SELECT
         t.id,
-        t.game_id,
+        t.topic_id,
         t.title,
         t.thumbnail_src,
         t.created_at,
@@ -1912,7 +1993,8 @@ async function listUserTierLists(userId) {
 
   const tierLists = rows.map((row) => ({
     id: row.id,
-    gameId: row.game_id,
+    topicId: row.topic_id,
+    gameId: row.topic_id,
     title: row.title,
     thumbnailSrc: row.thumbnail_src || '',
     createdAt: Number(row.created_at),
@@ -1958,25 +2040,26 @@ function getAutoThumbnailSrc(groups = [], pool = []) {
   return fallbackItem?.src || ''
 }
 
-async function listAdminTierLists({ queryText = '', gameId = '', page = 1, limit = 50, currentUserId = '' } = {}) {
+async function listAdminTierLists({ queryText = '', gameId = '', topicId = '', page = 1, limit = 50, currentUserId = '' } = {}) {
   const normalizedLimit = Math.min(Math.max(Number(limit) || 50, 1), 200)
   const normalizedPage = Math.max(Number(page) || 1, 1)
   const hasQuery = !!(queryText || '').trim()
-  const hasGameId = !!(gameId || '').trim()
+  const resolvedTopicId = (topicId || gameId || '').trim()
+  const hasGameId = !!resolvedTopicId
   const search = `%${(queryText || '').trim()}%`
   const whereParts = []
   const params = []
 
   if (hasGameId) {
-    whereParts.push('t.game_id = ?')
-    params.push((gameId || '').trim())
+    whereParts.push('t.topic_id = ?')
+    params.push(resolvedTopicId)
   }
 
   if (hasQuery) {
     whereParts.push(`(
       t.title LIKE ?
-      OR g.name LIKE ?
-      OR g.id LIKE ?
+      OR tp.name LIKE ?
+      OR tp.id LIKE ?
       OR u.email LIKE ?
       OR u.nickname LIKE ?
     )`)
@@ -1990,8 +2073,8 @@ async function listAdminTierLists({ queryText = '', gameId = '', page = 1, limit
       SELECT
         t.id,
         t.author_id,
-        t.game_id,
-        g.name AS game_name,
+        t.topic_id,
+        tp.name AS topic_name,
         t.title,
         t.thumbnail_src,
         t.description,
@@ -2010,7 +2093,7 @@ async function listAdminTierLists({ queryText = '', gameId = '', page = 1, limit
         u.avatar_src
       FROM tierlists t
       INNER JOIN users u ON u.id = t.author_id
-      INNER JOIN games g ON g.id = t.game_id
+      INNER JOIN topics tp ON tp.id = t.topic_id
       ${whereClause}
       ORDER BY t.updated_at DESC, t.created_at DESC
     `,
@@ -2044,23 +2127,24 @@ async function listAdminTierLists({ queryText = '', gameId = '', page = 1, limit
   }
 }
 
-async function summarizeAdminTierLists({ queryText = '', gameId = '' } = {}) {
+async function summarizeAdminTierLists({ queryText = '', gameId = '', topicId = '' } = {}) {
   const hasQuery = !!(queryText || '').trim()
-  const hasGameId = !!(gameId || '').trim()
+  const resolvedTopicId = (topicId || gameId || '').trim()
+  const hasGameId = !!resolvedTopicId
   const search = `%${(queryText || '').trim()}%`
   const whereParts = []
   const params = []
 
   if (hasGameId) {
-    whereParts.push('t.game_id = ?')
-    params.push((gameId || '').trim())
+    whereParts.push('t.topic_id = ?')
+    params.push(resolvedTopicId)
   }
 
   if (hasQuery) {
     whereParts.push(`(
       t.title LIKE ?
-      OR g.name LIKE ?
-      OR g.id LIKE ?
+      OR tp.name LIKE ?
+      OR tp.id LIKE ?
       OR u.email LIKE ?
       OR u.nickname LIKE ?
     )`)
@@ -2073,7 +2157,7 @@ async function summarizeAdminTierLists({ queryText = '', gameId = '' } = {}) {
       SELECT t.is_public
       FROM tierlists t
       INNER JOIN users u ON u.id = t.author_id
-      INNER JOIN games g ON g.id = t.game_id
+      INNER JOIN topics tp ON tp.id = t.topic_id
       ${whereClause}
     `,
     params
@@ -2094,8 +2178,8 @@ async function findTierListById(id, currentUserId = '') {
       SELECT
         t.id,
         t.author_id,
-        t.game_id,
-        g.name AS game_name,
+        t.topic_id,
+        tp.name AS topic_name,
         t.title,
         t.thumbnail_src,
         t.description,
@@ -2114,7 +2198,7 @@ async function findTierListById(id, currentUserId = '') {
         u.avatar_src
       FROM tierlists t
       INNER JOIN users u ON u.id = t.author_id
-      INNER JOIN games g ON g.id = t.game_id
+      INNER JOIN topics tp ON tp.id = t.topic_id
       WHERE t.id = ?
       LIMIT 1
     `,
@@ -2146,6 +2230,8 @@ async function createTemplateRequest({
   sourceTierListId = '',
   sourceGameId,
   targetGameId = '',
+  sourceTopicId = sourceGameId,
+  targetTopicId = targetGameId,
   title,
   description = '',
   thumbnailSrc = '',
@@ -2171,8 +2257,8 @@ async function createTemplateRequest({
         request_type,
         requester_id,
         source_tierlist_id,
-        source_game_id,
-        target_game_id,
+        source_topic_id,
+        target_topic_id,
         status,
         title_snapshot,
         description_snapshot,
@@ -2191,8 +2277,8 @@ async function createTemplateRequest({
       type,
       requesterId,
       sourceTierListId || null,
-      sourceGameId,
-      targetGameId,
+      sourceTopicId,
+      targetTopicId,
       title,
       description,
       thumbnailSrc,
@@ -2215,8 +2301,8 @@ async function findTemplateRequestById(id) {
         tr.request_type,
         tr.requester_id,
         tr.source_tierlist_id,
-        tr.source_game_id,
-        tr.target_game_id,
+        tr.source_topic_id,
+        tr.target_topic_id,
         tr.status,
         tr.title_snapshot,
         tr.description_snapshot,
@@ -2230,12 +2316,12 @@ async function findTemplateRequestById(id) {
         u.nickname,
         u.email,
         u.avatar_src AS requester_avatar_src,
-        sg.name AS source_game_name,
-        tg.name AS target_game_name
+        sg.name AS source_topic_name,
+        tg.name AS target_topic_name
       FROM template_requests tr
       INNER JOIN users u ON u.id = tr.requester_id
-      LEFT JOIN games sg ON sg.id = tr.source_game_id
-      LEFT JOIN games tg ON tg.id = tr.target_game_id
+      LEFT JOIN topics sg ON sg.id = tr.source_topic_id
+      LEFT JOIN topics tg ON tg.id = tr.target_topic_id
       WHERE tr.id = ?
       LIMIT 1
     `,
@@ -2257,8 +2343,8 @@ async function listAdminTemplateRequests({ status = 'pending', statuses = [] } =
         tr.request_type,
         tr.requester_id,
         tr.source_tierlist_id,
-        tr.source_game_id,
-        tr.target_game_id,
+        tr.source_topic_id,
+        tr.target_topic_id,
         tr.status,
         tr.title_snapshot,
         tr.description_snapshot,
@@ -2272,12 +2358,12 @@ async function listAdminTemplateRequests({ status = 'pending', statuses = [] } =
         u.nickname,
         u.email,
         u.avatar_src AS requester_avatar_src,
-        sg.name AS source_game_name,
-        tg.name AS target_game_name
+        sg.name AS source_topic_name,
+        tg.name AS target_topic_name
       FROM template_requests tr
       INNER JOIN users u ON u.id = tr.requester_id
-      LEFT JOIN games sg ON sg.id = tr.source_game_id
-      LEFT JOIN games tg ON tg.id = tr.target_game_id
+      LEFT JOIN topics sg ON sg.id = tr.source_topic_id
+      LEFT JOIN topics tg ON tg.id = tr.target_topic_id
       WHERE tr.status IN (${placeholders})
       ORDER BY
         CASE tr.status
@@ -2299,7 +2385,7 @@ async function updateTemplateRequestStatus({ id, status }) {
 }
 
 async function updateTemplateRequestTargetGame({ id, targetGameId }) {
-  await query('UPDATE template_requests SET target_game_id = ?, updated_at = ? WHERE id = ?', [targetGameId || '', now(), id])
+  await query('UPDATE template_requests SET target_topic_id = ?, updated_at = ? WHERE id = ?', [targetGameId || '', now(), id])
   return findTemplateRequestById(id)
 }
 
@@ -2350,6 +2436,7 @@ async function saveTierList({
   id,
   authorId,
   gameId,
+  topicId = gameId,
   title,
   thumbnailSrc = '',
   description,
@@ -2383,11 +2470,11 @@ async function saveTierList({
   await query(
     `
       INSERT INTO tierlists (
-        id, author_id, game_id, title, thumbnail_src, description, is_public, show_character_names, icon_size, source_tierlist_id, source_snapshot_title, source_snapshot_author, groups_json, pool_json, created_at, updated_at
+        id, author_id, topic_id, title, thumbnail_src, description, is_public, show_character_names, icon_size, source_tierlist_id, source_snapshot_title, source_snapshot_author, groups_json, pool_json, created_at, updated_at
       )
       VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
     `,
-    [nextId, authorId, gameId, title, nextThumbnailSrc, description || '', isPublic ? 1 : 0, showCharacterNames ? 1 : 0, Number(iconSize) || 80, sourceTierListId || null, sourceSnapshotTitle || '', sourceSnapshotAuthor || '', serializeJson(groups), serializeJson(pool), createdAt, createdAt]
+    [nextId, authorId, topicId, title, nextThumbnailSrc, description || '', isPublic ? 1 : 0, showCharacterNames ? 1 : 0, Number(iconSize) || 80, sourceTierListId || null, sourceSnapshotTitle || '', sourceSnapshotAuthor || '', serializeJson(groups), serializeJson(pool), createdAt, createdAt]
   )
   return findTierListById(nextId, authorId)
 }
@@ -2400,7 +2487,8 @@ async function duplicateTierListForUser({ tierList, targetUserId }) {
   return saveTierList({
     id: duplicateId,
     authorId: targetUserId,
-    gameId: tierList.gameId,
+    gameId: tierList.topicId || tierList.gameId,
+    topicId: tierList.topicId || tierList.gameId,
     title: copyTitle,
     thumbnailSrc: tierList.thumbnailSrc || '',
     description: tierList.description || '',
@@ -2424,11 +2512,11 @@ async function unfavoriteTierList({ userId, tierListId }) {
 }
 
 async function favoriteGame({ userId, gameId }) {
-  await query('INSERT IGNORE INTO favorite_games (user_id, game_id, created_at) VALUES (?, ?, ?)', [userId, gameId, now()])
+  await query('INSERT IGNORE INTO favorite_topics (user_id, topic_id, created_at) VALUES (?, ?, ?)', [userId, gameId, now()])
 }
 
 async function unfavoriteGame({ userId, gameId }) {
-  await query('DELETE FROM favorite_games WHERE user_id = ? AND game_id = ?', [userId, gameId])
+  await query('DELETE FROM favorite_topics WHERE user_id = ? AND topic_id = ?', [userId, gameId])
 }
 
 module.exports = {
@@ -2472,6 +2560,7 @@ module.exports = {
   createGameItem,
   updateGameItemLabel,
   updateGameItemDisplayOrder,
+  countTierListsUsingGameItem,
   updateCustomItemLabel,
   updateImageAssetLabel,
   deleteGameItem,

backend/src/routes/admin.js

@@ -18,6 +18,7 @@ const {
   createGameItem,
   updateGameItemLabel,
   updateGameItemDisplayOrder,
+  countTierListsUsingGameItem,
   updateCustomItemLabel,
   updateImageAssetLabel,
   deleteGameItem,
@@ -54,6 +55,10 @@ const { createMemoryUpload, writeOptimizedImage, getImageOptimizationQueueState
 
 const router = express.Router()
 
+function getTemplateIdParam(req) {
+  return req.params.templateId || req.params.gameId || ''
+}
+
 function buildUploadFilename(file) {
   const ext = path.extname(file.originalname || '').toLowerCase()
   const safeExt = ext && /^[.a-z0-9]+$/.test(ext) ? ext : ''
@@ -110,7 +115,7 @@ function canManageAdminRole(actingUser, primaryAdmin) {
   return !!actingUser?.isAdmin && primaryAdmin?.id === actingUser.id
 }
 
-router.post('/games', requireAdmin, async (req, res) => {
+router.post(['/games', '/templates'], requireAdmin, async (req, res) => {
   const schema = z.object({
     id: z.string().min(1),
     name: z.string().min(1).max(60),
@@ -126,24 +131,26 @@ router.post('/games', requireAdmin, async (req, res) => {
     const copiedThumb = await copyUploadIntoGameAsset(parsed.data.thumbnailSrc)
     await updateGameThumbnail(game.id, copiedThumb)
   }
-  res.json({ game: await findGameById(game.id) })
+  const template = await findGameById(game.id)
+  res.json({ game: template, template })
 })
 
-router.patch('/games/:gameId', requireAdmin, async (req, res) => {
+router.patch(['/games/:gameId', '/templates/:templateId'], requireAdmin, async (req, res) => {
   const schema = z.object({
     isPublic: z.boolean(),
   })
   const parsed = schema.safeParse(req.body)
   if (!parsed.success) return res.status(400).json({ error: 'bad_request' })
 
-  const game = await findGameById(req.params.gameId)
+  const templateId = getTemplateIdParam(req)
+  const game = await findGameById(templateId)
   if (!game) return res.status(404).json({ error: 'not_found' })
 
   const updated = await updateGameVisibility(game.id, parsed.data.isPublic)
-  res.json({ game: updated })
+  res.json({ game: updated, template: updated })
 })
 
-router.patch('/games/display-order', requireAdmin, async (req, res) => {
+router.patch(['/games/display-order', '/templates/display-order'], requireAdmin, async (req, res) => {
   const schema = z.object({
     gameIds: z.array(z.string().min(1)).max(50),
   })
@@ -154,26 +161,28 @@ router.patch('/games/display-order', requireAdmin, async (req, res) => {
   const validGameIds = new Set(games.map((game) => game.id))
   const filteredIds = parsed.data.gameIds.filter((gameId) => validGameIds.has(gameId))
   const updatedGames = await updateGameDisplayOrder(filteredIds)
-  res.json({ games: updatedGames })
+  res.json({ games: updatedGames, templates: updatedGames })
 })
 
-router.patch('/games/:gameId/items/display-order', requireAdmin, async (req, res) => {
+router.patch(['/games/:gameId/items/display-order', '/templates/:templateId/items/display-order'], requireAdmin, async (req, res) => {
   const schema = z.object({
     itemIds: z.array(z.string().min(1)).min(1),
   })
   const parsed = schema.safeParse(req.body)
   if (!parsed.success) return res.status(400).json({ error: 'bad_request' })
 
-  const game = await findGameById(req.params.gameId)
+  const templateId = getTemplateIdParam(req)
+  const game = await findGameById(templateId)
   if (!game) return res.status(404).json({ error: 'not_found' })
 
   const items = await updateGameItemDisplayOrder(game.id, parsed.data.itemIds)
   res.json({ items })
 })
 
-router.post('/games/:gameId/thumbnail', requireAdmin, upload.single('thumbnail'), async (req, res) => {
+router.post(['/games/:gameId/thumbnail', '/templates/:templateId/thumbnail'], requireAdmin, upload.single('thumbnail'), async (req, res) => {
   if (!req.file) return res.status(400).json({ error: 'file_required' })
-  const game = await findGameById(req.params.gameId)
+  const templateId = getTemplateIdParam(req)
+  const game = await findGameById(templateId)
   if (!game) return res.status(404).json({ error: 'not_found' })
 
   const optimized = await writeOptimizedImage({
@@ -185,14 +194,15 @@ router.post('/games/:gameId/thumbnail', requireAdmin, upload.single('thumbnail')
     quality: 84,
   })
 
-  const updated = await updateGameThumbnail(req.params.gameId, optimized.src)
-  res.json({ game: updated })
+  const updated = await updateGameThumbnail(templateId, optimized.src)
+  res.json({ game: updated, template: updated })
 })
 
-router.post('/games/:gameId/images', requireAdmin, upload.array('images', 50), async (req, res) => {
+router.post(['/games/:gameId/images', '/templates/:templateId/images'], requireAdmin, upload.array('images', 50), async (req, res) => {
   const files = Array.isArray(req.files) ? req.files : []
   if (!files.length) return res.status(400).json({ error: 'file_required' })
-  const game = await findGameById(req.params.gameId)
+  const templateId = getTemplateIdParam(req)
+  const game = await findGameById(templateId)
   if (!game) return res.status(404).json({ error: 'not_found' })
 
   const labelsRaw = req.body?.labels
@@ -223,19 +233,28 @@ router.post('/games/:gameId/images', requireAdmin, upload.array('images', 50), a
   res.json({ item: items[0], items })
 })
 
-router.delete('/games/:gameId/items/:itemId', requireAdmin, async (req, res) => {
-  const game = await findGameById(req.params.gameId)
+router.delete(['/games/:gameId/items/:itemId', '/templates/:templateId/items/:itemId'], requireAdmin, async (req, res) => {
+  const game = await findGameById(getTemplateIdParam(req))
   if (!game) return res.status(404).json({ error: 'not_found' })
   await deleteGameItem(req.params.itemId)
   res.json({ ok: true })
 })
 
-router.patch('/games/:gameId/items/:itemId', requireAdmin, async (req, res) => {
+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)
   if (!parsed.success) return res.status(400).json({ error: 'bad_request' })
 
-  const game = await findGameById(req.params.gameId)
+  const game = await findGameById(getTemplateIdParam(req))
   if (!game) return res.status(404).json({ error: 'not_found' })
 
   const updated = await updateGameItemLabel(req.params.itemId, parsed.data.label)
@@ -243,10 +262,11 @@ router.patch('/games/:gameId/items/:itemId', requireAdmin, async (req, res) => {
   res.json({ item: updated })
 })
 
-router.delete('/games/:gameId', requireAdmin, async (req, res) => {
-  const game = await findGameById(req.params.gameId)
+router.delete(['/games/:gameId', '/templates/:templateId'], requireAdmin, async (req, res) => {
+  const templateId = getTemplateIdParam(req)
+  const game = await findGameById(templateId)
   if (!game) return res.status(404).json({ error: 'not_found' })
-  await deleteGame(req.params.gameId)
+  await deleteGame(templateId)
   res.json({ ok: true })
 })
 
@@ -298,6 +318,7 @@ router.get('/custom-items', requireAdmin, async (req, res) => {
 router.get('/tierlists', requireAdmin, async (req, res) => {
   const schema = z.object({
     q: z.string().trim().max(120).optional().default(''),
+    topicId: z.string().trim().max(120).optional().default(''),
     gameId: z.string().trim().max(120).optional().default(''),
     page: z.coerce.number().int().min(1).optional().default(1),
     limit: z.coerce.number().int().min(1).max(200).optional().default(50),
@@ -307,6 +328,7 @@ router.get('/tierlists', requireAdmin, async (req, res) => {
 
   const result = await listAdminTierLists({
     queryText: parsed.data.q,
+    topicId: parsed.data.topicId || parsed.data.gameId,
     gameId: parsed.data.gameId,
     page: parsed.data.page,
     limit: parsed.data.limit,
@@ -318,6 +340,7 @@ router.get('/tierlists', requireAdmin, async (req, res) => {
 router.get('/tierlists/stats', requireAdmin, async (req, res) => {
   const schema = z.object({
     q: z.string().trim().max(120).optional().default(''),
+    topicId: z.string().trim().max(120).optional().default(''),
     gameId: z.string().trim().max(120).optional().default(''),
   })
   const parsed = schema.safeParse(req.query)
@@ -325,6 +348,7 @@ router.get('/tierlists/stats', requireAdmin, async (req, res) => {
 
   const result = await summarizeAdminTierLists({
     queryText: parsed.data.q,
+    topicId: parsed.data.topicId || parsed.data.gameId,
     gameId: parsed.data.gameId,
   })
   res.json(result)

backend/src/routes/games.js

@@ -6,7 +6,7 @@ const router = express.Router()
 
 router.get('/', async (req, res) => {
   const games = await listGames(req.session?.userId || '', { includePrivate: !!req.session?.isAdmin })
-  res.json({ games })
+  res.json({ games, topics: games })
 })
 
 router.post('/:gameId/favorite', requireAuth, async (req, res) => {
@@ -15,7 +15,7 @@ router.post('/:gameId/favorite', requireAuth, async (req, res) => {
   await favoriteGame({ userId: req.session.userId, gameId: game.id })
   const games = await listGames(req.session.userId)
   const updated = games.find((entry) => entry.id === game.id) || { ...game, isFavorited: true }
-  res.json({ game: updated })
+  res.json({ game: updated, topic: updated })
 })
 
 router.delete('/:gameId/favorite', requireAuth, async (req, res) => {
@@ -24,14 +24,14 @@ router.delete('/:gameId/favorite', requireAuth, async (req, res) => {
   await unfavoriteGame({ userId: req.session.userId, gameId: game.id })
   const games = await listGames(req.session.userId)
   const updated = games.find((entry) => entry.id === game.id) || { ...game, isFavorited: false }
-  res.json({ game: updated })
+  res.json({ game: updated, topic: updated })
 })
 
 router.get('/:gameId', async (req, res) => {
   const detail = await getGameDetail(req.params.gameId)
   if (!detail) return res.status(404).json({ error: 'not_found' })
   if (!detail.game.isPublic && !req.session?.isAdmin) return res.status(404).json({ error: 'not_found' })
-  res.json({ game: detail.game, items: detail.items })
+  res.json({ game: detail.game, topic: detail.game, items: detail.items })
 })
 
 module.exports = router

backend/src/routes/tierlists.js

@@ -20,7 +20,7 @@ const { requireAuth } = require('../middleware/auth')
 const { createMemoryUpload, writeOptimizedImage } = require('../lib/image-storage')
 
 const router = express.Router()
-const FREEFORM_GAME_ID = 'freeform'
+const FREEFORM_TOPIC_ID = 'freeform'
 const FREEFORM_DEFAULT_TITLE = '직접 티어표 만들기'
 
 function normalizePoolItem(item) {
@@ -61,7 +61,8 @@ const thumbnailUpload = createMemoryUpload(multer, { fileSize: 8 * 1024 * 1024 }
 const templateRequestSchema = z.object({
   type: z.enum(['create', 'update']),
   sourceTierListId: z.string().max(64).optional().default(''),
-  gameId: z.string().min(1).max(120),
+  gameId: z.string().min(1).max(120).optional(),
+  topicId: z.string().min(1).max(120).optional(),
   requestTitle: z.string().trim().min(1).max(120),
   requestDescription: z.string().trim().min(1).max(1000),
   thumbnailSrc: z.string().max(255).optional().default(''),
@@ -72,7 +73,11 @@ const templateRequestSchema = z.object({
       id: z.string().min(1),
       name: z.string().min(1).max(16),
       itemIds: z.array(z.string()).optional().default([]),
-    }).passthrough()
+}).passthrough().superRefine((value, ctx) => {
+  if (!(value.topicId || value.gameId)) {
+    ctx.addIssue({ code: z.ZodIssueCode.custom, message: 'topicId_required', path: ['topicId'] })
+  }
+})
   ),
   boardItems: z.array(
     z.object({
@@ -86,7 +91,8 @@ const templateRequestSchema = z.object({
 
 const tierListUpsertSchema = z.object({
   id: z.string().optional(),
-  gameId: z.string().min(1),
+  gameId: z.string().min(1).optional(),
+  topicId: z.string().min(1).optional(),
   title: z.string().min(1).max(120),
   thumbnailSrc: z.string().max(255).optional().default(''),
   description: z.string().max(1000).optional().default(''),
@@ -111,12 +117,16 @@ const tierListUpsertSchema = z.object({
       origin: z.enum(['game', 'custom']).default('game'),
     })
   ),
+}).superRefine((value, ctx) => {
+  if (!(value.topicId || value.gameId)) {
+    ctx.addIssue({ code: z.ZodIssueCode.custom, message: 'topicId_required', path: ['topicId'] })
+  }
 })
 
 router.get('/public', async (req, res) => {
-  const gameId = req.query.gameId
+  const topicId = typeof req.query.topicId === 'string' ? req.query.topicId : req.query.gameId
   const queryText = typeof req.query.q === 'string' ? req.query.q : ''
-  const lists = await listPublicTierLists(gameId, req.session?.userId || '', queryText)
+  const lists = await listPublicTierLists(topicId, req.session?.userId || '', queryText)
   res.json({ tierLists: lists })
 })
 
@@ -226,14 +236,15 @@ router.post('/template-request', requireAuth, async (req, res) => {
   if (!parsed.success) return res.status(400).json({ error: 'bad_request' })
 
   const payload = parsed.data
+  const topicId = payload.topicId || payload.gameId
   const normalizedBoardItems = payload.boardItems.map(normalizePoolItem)
   const customItems = normalizedBoardItems.filter((item) => item?.origin === 'custom')
   if (!customItems.length) return res.status(400).json({ error: 'custom_items_required' })
 
   if (payload.type === 'create') {
-    if (payload.gameId !== FREEFORM_GAME_ID) return res.status(400).json({ error: 'freeform_required' })
-  } else if (payload.gameId === FREEFORM_GAME_ID) {
-    return res.status(400).json({ error: 'game_template_required' })
+    if (topicId !== FREEFORM_TOPIC_ID) return res.status(400).json({ error: 'freeform_required' })
+  } else if (topicId === FREEFORM_TOPIC_ID) {
+    return res.status(400).json({ error: 'topic_template_required' })
   }
 
   let sourceTierList = null
@@ -251,8 +262,10 @@ router.post('/template-request', requireAuth, async (req, res) => {
       type: payload.type,
       requesterId: req.session.userId,
       sourceTierListId: sourceTierList?.id || '',
-      sourceGameId: payload.gameId,
-      targetGameId: payload.type === 'update' ? payload.gameId : '',
+      sourceGameId: topicId,
+      sourceTopicId: topicId,
+      targetGameId: payload.type === 'update' ? topicId : '',
+      targetTopicId: payload.type === 'update' ? topicId : '',
       title: payload.requestTitle,
       description: payload.requestDescription,
       thumbnailSrc: payload.thumbnailSrc || '',
@@ -274,6 +287,7 @@ router.post('/', requireAuth, async (req, res) => {
   const parsed = tierListUpsertSchema.safeParse(req.body)
   if (!parsed.success) return res.status(400).json({ error: 'bad_request' })
   const payload = parsed.data
+  const topicId = payload.topicId || payload.gameId
   const normalizedPool = payload.pool.map(normalizePoolItem)
 
   let existing = null
@@ -284,7 +298,8 @@ router.post('/', requireAuth, async (req, res) => {
     const updated = await saveTierList({
       id: existing.id,
       authorId: existing.authorId,
-      gameId: existing.gameId,
+      gameId: existing.topicId || existing.gameId,
+      topicId: existing.topicId || existing.gameId,
       title: payload.title,
       thumbnailSrc: payload.thumbnailSrc || '',
       description: payload.description || '',
@@ -303,7 +318,8 @@ router.post('/', requireAuth, async (req, res) => {
   const created = await saveTierList({
     id: nanoid(),
     authorId: req.session.userId,
-    gameId: payload.gameId,
+    gameId: topicId,
+    topicId,
     title: payload.title,
     thumbnailSrc: payload.thumbnailSrc || '',
     description: payload.description || '',

docs/history.md

@@ -1,5 +1,40 @@
 # 의사결정 이력
 
+## 2026-04-02 v1.4.19
+- 템플릿 기본 아이템 삭제가 과거에 저장된 티어표까지 바꿔 버리면 운영자 편집 의도보다 사용자 결과물 보존이 더 크게 흔들리므로, 이 삭제는 “앞으로의 템플릿 구성만 바꾸고 기존 저장본은 보존”하는 편이 맞다고 판단했다.
+- 다만 이미 여러 티어표에서 쓰인 아이템인지 모른 채 지우게 두는 것도 위험하므로, 삭제 자체를 막기보다는 저장된 티어표 사용 개수와 공개/비공개 범위를 먼저 보여주고 운영자가 맥락을 알고 결정하게 하는 쪽이 더 현실적이라고 정리했다.
+
+## 2026-04-02 v1.4.18
+- 새 창 열기처럼 브라우저 기본 앵커가 충분한 동작은 템플릿 안에서 `window.open`을 직접 부르기보다, 기본 링크 동작에 맡기는 편이 더 단순하고 안전하다고 판단했다.
+
+## 2026-04-02 v1.4.17
+- `editor` 주소는 이전과 현재가 같은 URL 형태를 공유하므로, 여기까지 redirect를 두면 호환성이 아니라 자기 자신으로의 재해석만 반복하게 된다. 이 구간은 별도 레거시 레코드를 두지 않고 현재 라우트 하나로 수용하는 편이 맞다고 판단했다.
+
+## 2026-04-02 v1.4.16
+- 백엔드/DB 장애 상황을 단순 연결 실패처럼 보여주면 사용자가 원인을 잘못 이해하게 되므로, 네트워크 단절과 서버 점검/초기화 실패를 전역 UI에서 분리해서 안내하는 편이 맞다고 판단했다.
+- 이런 장애 안내는 각 화면별 에러 문구를 따로 손보는 것보다 `api` 공통 계층에서 상태를 감지하고 `App` 셸이 한 번에 전환하는 구조가 재사용성과 유지보수 측면에서 더 안전하다고 정리했다.
+
+## 2026-04-02 v1.4.15
+- 실제 운영 DB에서 마지막 500 원인을 먼저 재현해본 결과, 스키마 설계보다 MariaDB의 `SHOW ... LIKE ?` 플레이스홀더 비호환과 부분 마이그레이션 상태 재진입 이슈가 핵심이었으므로, 이 단계에선 구조 변경보다 기동 안정성을 먼저 회복하는 편이 맞다고 판단했다.
+- 마이그레이션 로직은 “처음 실행”뿐 아니라 “반쯤 적용된 상태에서 다시 실행”도 견뎌야 하므로, 컬럼 존재 확인과 조건 분기를 모두 공용 `information_schema` 검사로 모으는 편이 더 안전하다고 정리했다.
+
+## 2026-04-02 v1.4.14
+- 기존 `/games` 주소 호환은 alias보다 redirect가 더 맞다고 판단했다. 이번 단계에선 주소는 유지하되 라우트 파라미터 의미는 항상 `topicId`로 정규화해 Vue Router 경고와 내부 분기를 함께 줄였다.
+- 운영 DB에 직접 `RENAME TABLE`과 컬럼 `CHANGE`를 거는 방식은 실제 환경에서 실패 여지가 커서, 마지막 스키마 전환도 새 topic 스키마를 먼저 만들고 기존 game 데이터를 복사하는 비파괴 마이그레이션이 더 안전하다고 정리했다.
+
+## 2026-04-02 v1.4.13
+- 사용자 표면과 API 이름층까지 `topic/template`로 옮긴 뒤에는, DB 스키마도 실제로 따라오게 해야 이후 유지보수 비용이 덜 쌓이므로 `games` 계열 실명을 `topics` 계열로 마이그레이션하는 편이 맞다고 판단했다.
+- 다만 한 번에 응답 키까지 완전히 끊으면 프런트와 관리자 흐름이 너무 크게 흔들릴 수 있으므로, 이번 단계에서는 실제 저장 스키마는 `topic`으로 옮기고 응답의 `gameId / gameName`은 호환 키로 잠시 함께 유지하는 점진 마감이 가장 안전하다고 정리했다.
+
+## 2026-04-02 v1.4.12
+- 프런트 이름만 바꾸는 단계가 끝난 뒤에는, 백엔드도 새 `/api/topics`, `/api/admin/templates` 경로를 열고 기존 `/games`는 호환용으로 남기는 점진 전환이 가장 안전하다고 판단했다.
+
+## 2026-04-02 v1.4.11
+- 백엔드 `/api/games` 경로를 바로 바꾸기보다, 프런트 API 객체에서 먼저 `topic/template` 의미 이름을 제공하고 호출부를 옮기는 편이 위험이 훨씬 낮다고 판단했다.
+
+## 2026-04-02 v1.4.10
+- 사용자 주소는 이미 `/topics`로 옮기기 시작했으므로, 라우트 이름과 기본 파라미터도 `topicHub / topicId` 기준으로 맞추고 기존 `gameId`는 호환 fallback으로만 남기는 편이 더 자연스럽다고 판단했다.
+
 ## 2026-04-02 v1.4.9
 - 경로 전환은 화면마다 문자열을 직접 고치는 방식보다, 공용 경로 헬퍼를 먼저 세워 주제·에디터·로그인 리다이렉트 흐름을 한 기준으로 묶는 편이 이후 리네이밍 비용을 훨씬 줄인다고 판단했다.
 

docs/todo.md

@@ -1,6 +1,23 @@
 # 할 일 및 이슈
 
 ## 단기 확인
+- `v1.4.19`에서 템플릿 기본 아이템 삭제는 기존 저장 티어표를 보존하도록 정책이 바뀌었으므로, 실제 운영 데이터에서 삭제 후 예전 티어표의 배치/대기풀이 그대로 유지되는지와 새 티어표 생성 시에만 아이템이 빠지는지 한 번 더 QA한다.
+- `v1.4.19`에서 삭제 전 영향 개수 경고를 붙였으므로, 공개/비공개 티어표가 섞인 템플릿에서 숫자가 기대대로 보이는지와 삭제 취소/확정 후 스크롤 위치가 안정적으로 유지되는지 한 번 더 QA한다.
+- `v1.4.19`에서 템플릿 썸네일 등록 아이콘은 썸네일이 있을 때 숨기도록 정리했으므로, 썸네일 있음/없음 상태 전환과 드래그 오버 활성 상태에서 안내 문구가 겹치지 않는지 한 번 더 QA한다.
+- `v1.4.18`에서 관리자 템플릿 요청 카드 썸네일 클릭을 브라우저 기본 새 창 열기로 정리했으므로, 요청 썸네일 클릭 시 오류 없이 새 탭이 열리고 `전체 티어표 관리` 썸네일 모달 동작과도 섞이지 않는지 한 번 더 QA한다.
+- `v1.4.17`에서 주제 컬렉션 카드 클릭 시 에디터 진입 무한 루프를 끊었으므로, 새 티어표 만들기/기존 티어표 열기/공유 링크 열기 세 흐름이 모두 정상 진입하는지 한 번 더 QA한다.
+- `v1.4.16`에서 장애 전용 안내 화면을 붙였으므로, 실제로 `db_init_failed`와 네트워크 차단 상황에서 각각 `서비스 점검 중`, `서버 연결 확인 중` 화면이 기대대로 분기되는지 한 번 더 QA한다.
+- `v1.4.15`에서 `ensureData()`가 실제 운영 DB 설정으로 `ok`까지 통과한 것은 확인했으므로, 이제는 브라우저에서 `/api/auth/me`, `/api/auth/meta`, `/api/topics` 500이 실제로 사라졌는지와 기존 세션 로그인 흐름이 복구됐는지 한 번 더 QA한다.
+- `v1.4.14`부터는 DB 마이그레이션이 rename 대신 복사 기반으로 바뀌었으므로, 실제 운영 DB에서 서버 재시작 후 `topics` 계열 테이블과 `tierlists.topic_id`, `template_requests.source_topic_id/target_topic_id`가 기대대로 채워지는지 먼저 확인한다.
+- 레거시 `/games/...`와 `/editor/:gameId/...`는 redirect로 남겼으므로, 오래된 북마크 진입 후 주소가 `/topics/...`, `/editor/:topicId/...`로 자연스럽게 정규화되는지 한 번 더 QA한다.
+- `v1.4.13`부터 DB 실명도 `topics / topic_items / favorite_topics / topic_id` 기준으로 옮겼으므로, 기존 운영 DB에서 서버 재시작 후 자동 마이그레이션이 한 번만 자연스럽게 수행되는지 먼저 확인한다.
+- 백엔드 응답은 현재 `topicId / topicName`과 `gameId / gameName`을 함께 내려주고 있으므로, 다음 단계에서는 실제 프런트/관리자에서 더 이상 `gameId` fallback이 필요 없는 지점을 확인해 호환 키 제거 순서를 정한다.
+- 티어표 공개 목록, 관리자 전체 티어표 관리, 저장/요청 API는 `topicId`를 우선 받도록 바꿨으므로, 실제 브라우저에서 검색/저장/공유/관리자 필터가 모두 같은 파라미터 체계로 자연스럽게 이어지는지 한 번 더 QA한다.
+- `/api/topics`, `/api/admin/templates` alias를 연 뒤 프런트 호출도 새 경로로 옮겼으므로, 실제 브라우저에서 주제 목록/즐겨찾기/주제 상세/관리자 템플릿 관리가 모두 같은 세션으로 자연스럽게 동작하는지 한 번 더 QA한다.
+- 프런트 API 호출부는 `topic/template` 의미 이름으로 옮겼으므로, 다음 단계에서는 `api.js` 안의 레거시 alias를 얼마나 더 유지할지와 백엔드 API 경로를 실제로 바꿀지 범위를 정한다.
+- 관리자 템플릿/주제 화면과 홈·에디터·즐겨찾기에서 새 API 이름층으로 바뀐 뒤에도 저장, 즐겨찾기, 템플릿 생성, 아이템 정렬 흐름이 자연스러운지 한 번 더 QA한다.
+- `topicHub / topicId`를 기본 라우트 기준으로 세웠으므로, 기존 `/games/...` 북마크와 새 `/topics/...` 주소 양쪽에서 주제 상세와 에디터 진입이 모두 자연스럽게 이어지는지 한 번 더 QA한다.
+- 다음 단계에서는 `api.getGame`, `listGames`, `favoriteGame`처럼 남아 있는 프런트 API 이름을 어느 수준까지 `topic/template` 의미로 감쌀지 정리한다.
 - 경로 헬퍼를 사용자 주요 화면에 연결했으므로, 로그인 리다이렉트·공유 프리뷰·복사본 이동·주제 복귀 흐름이 실제 브라우저에서 모두 같은 주소 체계로 자연스럽게 이어지는지 한 번 더 QA한다.
 - 다음 단계에서는 `router/index.js`의 `gameHub`, `route.params.gameId`, `api.getGame`처럼 남아 있는 프런트 내부 이름도 어디까지 `topic/template` 의미로 감쌀지 범위를 더 좁힌다.
 - 주제 상세 화면 제목은 ID fallback 대신 로딩 문구를 쓰도록 바꿨으므로, 직접 진입·뒤로가기·다른 주제로 연속 이동할 때 헤더가 깜빡이거나 이전 제목을 잠깐 유지하지 않는지 한 번 더 QA한다.

docs/update.md

@@ -1,5 +1,46 @@
 # 업데이트 로그
 
+## 2026-04-02 v1.4.19
+- 관리자 템플릿 기본 아이템 삭제는 이제 기존에 저장된 티어표의 그룹/대기풀 데이터를 건드리지 않고, 템플릿의 현재 기본 아이템 목록에서만 제거되도록 바꿨다. 그래서 이미 만들어진 티어표는 그대로 유지되고, 이후 새로 만드는 티어표에서만 해당 아이템이 빠진다.
+- 삭제 전에는 이 아이템이 이미 저장된 티어표 몇 개에서 사용 중인지(공개/비공개 포함) 확인 문구를 먼저 보여주도록 바꿔, 운영자가 영향 범위를 알고 삭제할 수 있게 했다.
+- 템플릿 썸네일이 이미 등록된 상태에서는 등록 아이콘이 겹쳐 보이지 않도록 정리했고, 기본 아이템 삭제 후 템플릿을 다시 불러와도 페이지가 맨 위로 튀지 않게 스크롤 위치를 복원하도록 보강했다.
+
+## 2026-04-02 v1.4.18
+- 관리자 템플릿 요청 카드 썸네일 클릭은 `window.open(...)`을 템플릿 이벤트 안에서 직접 호출하던 구조 때문에 브라우저 새 창 열기 시 `Cannot read properties of undefined (reading 'open')`가 날 수 있었고, 이를 제거해 앵커의 기본 새 창 동작만 사용하도록 정리했다.
+
+## 2026-04-02 v1.4.17
+- 주제 컬렉션에서 티어표 카드를 클릭할 때 `Maximum call stack size exceeded`가 나던 원인은 `editor` 레거시 redirect가 새 라우트와 동일한 URL 패턴을 다시 자기 자신에게 redirect하던 구조였고, 불필요한 `editor` redirect 레코드를 제거해 무한 라우팅 루프를 끊었다.
+
+## 2026-04-02 v1.4.16
+- 백엔드나 DB 장애가 났을 때 일반 화면에서 계속 `연결할 수 없어요` 식으로 보이던 흐름을 정리하고, `api` 공통 요청 계층에서 `db_init_failed` 같은 500과 네트워크 실패를 감지해 앱 전체를 점검/연결 확인 화면으로 전환하도록 바꿨다.
+- 이제 데이터베이스 초기화 실패나 서버 내부 500은 `서비스 점검 중`, 네트워크 단절은 `서버 연결 확인 중`으로 구분되어 보이며, 사용자는 일반 페이지 대신 전용 안내 화면과 다시 시도 버튼을 보게 된다.
+
+## 2026-04-02 v1.4.15
+- `db_init_failed`의 직접 원인은 MariaDB에서 `SHOW TABLES LIKE ?`, `SHOW COLUMNS ... LIKE ?` 플레이스홀더를 허용하지 않던 부분이었고, 이를 `information_schema` 조회 기반으로 바꿔 실제 운영 DB에서도 `ensureData()`가 정상 통과되게 고쳤다.
+- 중간 마이그레이션 상태에서 `template_requests.target_topic_id`가 이미 생긴 DB는 중복 컬럼 추가로 다시 실패할 수 있었으므로, 해당 확인도 `columnExists()` 기준으로 바꿔 부분 적용된 DB까지 안전하게 다시 기동되게 정리했다.
+
+## 2026-04-02 v1.4.14
+- `/games/:gameId`, `/editor/:gameId/...` 레거시 주소는 Vue Router alias 대신 redirect로 정리해, `topicId` 기준 라우트와 섞일 때 뜨던 param mismatch 경고를 제거했다.
+- 운영 DB에서 바로 `RENAME/CHANGE`를 치던 초기 마이그레이션은 위험도가 높아, `topics / topic_items / favorite_topics / topic_id` 스키마를 안전하게 만들고 기존 `games` 계열 데이터를 복사해 오는 방식으로 바꿨다.
+- DB 초기화 실패 시 원인을 바로 확인할 수 있도록 백엔드에서 `db_init_failed` 응답 전에 실제 에러를 서버 로그에 남기도록 보강했다.
+
+## 2026-04-02 v1.4.13
+- DB 실명 변경 마지막 단계로 `games / game_items / favorite_games`를 `topics / topic_items / favorite_topics` 기준으로 자동 마이그레이션하도록 정리하고, `tierlists.game_id`, `template_requests.source_game_id/target_game_id`도 각각 `topic_id`, `source_topic_id/target_topic_id`로 옮기게 했다.
+- 백엔드 저장/조회 쿼리는 이제 새 topic 스키마를 기준으로 동작하고, 응답에는 `topicId / topicName`을 기본으로 내려주되 기존 프런트가 바로 깨지지 않도록 `gameId / gameName`도 잠시 함께 유지했다.
+- 티어표 공개 목록, 관리자 전체 티어표 관리, 티어표 저장/요청 API는 `topicId`를 우선 받도록 정리하고 기존 `gameId`는 호환 입력으로만 남겨, 외부 표면과 실제 저장 스키마가 한 단계 더 가까워지게 맞췄다.
+
+## 2026-04-02 v1.4.12
+- 백엔드에 `/api/topics`와 `/api/admin/templates` alias 경로를 추가하고, 주제/템플릿 응답도 `topic/topics`, `template/templates` 키를 함께 내려주도록 정리했다.
+- 프런트의 새 의미 이름은 이제 실제로도 `/api/topics`, `/api/admin/templates`를 타도록 연결해, 경로 이름과 호출 이름이 다시 어긋나지 않게 맞췄다.
+
+## 2026-04-02 v1.4.11
+- 프런트 API 이름층을 한 단계 더 정리해 `listTopics / getTopic / favoriteTopic`, `updateAdminTemplate*`, `searchPublicTierListsByTopic` 같은 의미 기반 이름을 추가하고 실제 호출부도 이 기준으로 옮겼다.
+- 백엔드 경로와 응답 구조는 그대로 유지한 채 프런트에서 읽는 이름만 먼저 바꿔, 다음 단계의 API/모델 리네이밍 부담을 더 줄였다.
+
+## 2026-04-02 v1.4.10
+- 주제 상세 라우트 이름을 `topicHub`로, 기본 경로 파라미터를 `topicId`로 바꾸고 기존 `gameId` 주소는 alias로 유지했다.
+- 앱 셸, 주제 상세, 티어표 편집기는 이제 내부에서 `topicId`를 우선 읽고, 레거시 주소로 들어온 경우에만 `gameId` fallback을 쓰도록 정리했다.
+
 ## 2026-04-02 v1.4.9
 - `frontend/src/lib/paths.js`를 추가해 주제 진입, 에디터 이동, 로그인 리다이렉트, 공유 프리뷰 주소 같은 사용자 표면 경로를 공용 함수로 모았다.
 - 홈, 주제 상세, 나의 티어표, 즐겨찾기, 검색 결과, 로그인, 설정, 관리자 미리보기, 티어표 편집기까지 이 경로 헬퍼를 쓰도록 바꿔 이후 `topics` 전환을 더 안전하게 이어갈 수 있는 기반을 만들었다.

frontend/src/App.vue

@@ -23,6 +23,7 @@ const router = useRouter()
 const auth = useAuthStore()
 const { toasts, dismissToast } = useToast()
 const RIGHT_RAIL_COPYRIGHT_URL = 'https://zenn.town/@murabito'
+const currentTopicId = computed(() => route.params.topicId || route.params.gameId || '')
 
 const leftRailCollapsed = ref(false)
 const rightRailOpen = ref(true)
@@ -33,6 +34,8 @@ const isGuideModalOpen = ref(false)
 const themeMode = ref('dark')
 const guideStepIndex = ref(0)
 const viewportWidth = ref(typeof window !== 'undefined' ? window.innerWidth : 1440)
+const backendState = ref('online')
+const backendMessage = ref('')
 provide('rightRailOpen', rightRailOpen)
 provide('localRightRailTarget', '#local-right-rail-root')
 
@@ -135,15 +138,16 @@ const isGuideNextDisabled = computed(() => guideStepIndex.value >= guideSteps.le
 const isLightTheme = computed(() => themeMode.value === 'light')
 const themeToggleLabel = computed(() => (isLightTheme.value ? '다크 모드' : '라이트 모드'))
 const showSettingsThemePanel = computed(() => false && route.name === 'profile')
-const showTopicViewToggle = computed(() => route.name === 'gameHub')
+const showTopicViewToggle = computed(() => route.name === 'topicHub')
 const topicViewMode = computed(() => (route.query.view === 'list' ? 'list' : 'grid'))
+const showBackendFallback = computed(() => !isPreviewMode.value && ['maintenance', 'offline'].includes(backendState.value))
 const leftBottomPrimaryAction = computed(() => {
   if (!authReady.value) return null
   if (route.name === 'home' && auth.user) {
     return { label: '커스텀 티어표 만들기', to: editorNewPath('freeform'), iconSrc: iconDashboardCustomize }
   }
-  if (route.name === 'gameHub') {
-    const target = editorNewPath(route.params.gameId)
+  if (route.name === 'topicHub') {
+    const target = editorNewPath(currentTopicId.value)
     return { label: '새 티어표 만들기', to: auth.user ? target : loginPath(target), iconSrc: iconAddNotes }
   }
   return null
@@ -162,7 +166,7 @@ const routeMeta = computed(() => {
       },
     }
   }
-  if (route.name === 'gameHub') {
+  if (route.name === 'topicHub') {
     return {
       title: '주제 티어표',
       subtitle: '주제별 공개 티어표 탐색',
@@ -170,7 +174,7 @@ const routeMeta = computed(() => {
       contextText: auth.user ? '이 주제의 새 티어표를 만들거나 기존 공개 티어표를 확인할 수 있어요.' : '로그인 후 새 티어표를 만들 수 있어요.',
       actionLabel: auth.user ? '새 티어표 만들기' : '로그인하러 가기',
       action: () => {
-        const target = editorNewPath(route.params.gameId)
+        const target = editorNewPath(currentTopicId.value)
         router.push(auth.user ? target : loginPath(target))
       },
     }
@@ -250,6 +254,13 @@ function syncViewportWidth() {
   viewportWidth.value = window.innerWidth
 }
 
+function handleBackendStatus(event) {
+  const state = event?.detail?.state
+  if (!state) return
+  backendState.value = state
+  backendMessage.value = typeof event?.detail?.message === 'string' ? event.detail.message : ''
+}
+
 function applyTheme(mode) {
   themeMode.value = mode === 'light' ? 'light' : 'dark'
   if (typeof document !== 'undefined') document.documentElement.dataset.theme = themeMode.value
@@ -269,6 +280,7 @@ onMounted(async () => {
   await auth.refresh()
   if (typeof window !== 'undefined') {
     syncViewportWidth()
+    window.addEventListener('tier-maker:backend-status', handleBackendStatus)
     window.addEventListener('resize', syncViewportWidth)
     window.addEventListener('keydown', handleGlobalKeydown)
     const leftSaved = window.localStorage.getItem('tier-maker:left-rail-collapsed')
@@ -291,6 +303,7 @@ function handleGlobalKeydown(event) {
 
 onBeforeUnmount(() => {
   if (typeof window !== 'undefined') {
+    window.removeEventListener('tier-maker:backend-status', handleBackendStatus)
     window.removeEventListener('resize', syncViewportWidth)
     window.removeEventListener('keydown', handleGlobalKeydown)
   }
@@ -346,7 +359,7 @@ function toggleRightRail() {
 }
 
 function setTopicViewMode(mode) {
-  if (route.name !== 'gameHub') return
+  if (route.name !== 'topicHub') return
   const nextQuery = { ...route.query }
   if (mode === 'list') nextQuery.view = 'list'
   else delete nextQuery.view
@@ -399,6 +412,11 @@ function submitGlobalSearch() {
   router.push(homePath(query))
 }
 
+function reloadApp() {
+  if (typeof window === 'undefined') return
+  window.location.reload()
+}
+
 
 </script>
 
@@ -413,7 +431,26 @@ function submitGlobalSearch() {
     }"
     :style="shellStyle"
   >
-    <template v-if="isPreviewMode">
+    <template v-if="showBackendFallback">
+      <main class="backendFallback">
+        <section class="backendFallback__card">
+          <div class="backendFallback__eyebrow">{{ backendState === 'maintenance' ? 'Maintenance' : 'Connection' }}</div>
+          <h1 class="backendFallback__title">{{ backendState === 'maintenance' ? '서비스 점검 중' : '서버 연결 확인 중' }}</h1>
+          <p class="backendFallback__desc">
+            {{
+              backendMessage ||
+              (backendState === 'maintenance'
+                ? '백엔드 또는 데이터베이스 작업으로 인해 잠시 이용이 어렵습니다. 잠시 후 다시 시도해주세요.'
+                : '네트워크 또는 서버 연결 상태를 확인한 뒤 다시 시도해주세요.')
+            }}
+          </p>
+          <div class="backendFallback__actions">
+            <button class="backendFallback__button" type="button" @click="reloadApp">다시 시도</button>
+          </div>
+        </section>
+      </main>
+    </template>
+    <template v-else-if="isPreviewMode">
       <main class="appMain appMain--preview">
         <RouterView />
       </main>
@@ -659,6 +696,65 @@ function submitGlobalSearch() {
   transition: grid-template-columns 220ms ease;
 }
 
+.backendFallback {
+  min-height: 100dvh;
+  display: grid;
+  place-items: center;
+  padding: 32px;
+  background:
+    radial-gradient(circle at top, rgba(86, 153, 255, 0.14), transparent 38%),
+    var(--theme-shell-bg);
+}
+
+.backendFallback__card {
+  width: min(100%, 560px);
+  display: grid;
+  gap: 18px;
+  padding: 28px;
+  border-radius: 28px;
+  border: 1px solid var(--theme-card-border);
+  background: var(--theme-card-bg);
+  box-shadow: inset 0 1px 0 var(--theme-card-shadow);
+}
+
+.backendFallback__eyebrow {
+  color: var(--theme-accent-strong);
+  font-size: 12px;
+  font-weight: 800;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+}
+
+.backendFallback__title {
+  margin: 0;
+  font-size: clamp(28px, 4vw, 42px);
+  line-height: 1.05;
+  letter-spacing: -0.04em;
+}
+
+.backendFallback__desc {
+  margin: 0;
+  color: var(--theme-text-muted);
+  font-size: 15px;
+  line-height: 1.7;
+}
+
+.backendFallback__actions {
+  display: flex;
+  justify-content: flex-start;
+}
+
+.backendFallback__button {
+  min-width: 128px;
+  padding: 12px 18px;
+  border-radius: 999px;
+  border: 1px solid rgba(98, 170, 255, 0.32);
+  background: rgba(98, 170, 255, 0.18);
+  color: var(--theme-text-strong);
+  font-weight: 700;
+  cursor: pointer;
+}
+
 .appShell--preview {
   display: block;
 }

frontend/src/components/admin/AdminGamesSection.vue

@@ -125,7 +125,7 @@ function setThumbFileElement(el) {
           <img v-if="props.displayThumbnailUrl" class="selectedThumb selectedThumb--sidebar" :src="props.displayThumbnailUrl" :alt="props.selectedTemplate.game.name" />
           <div v-else class="selectedThumb selectedThumb--empty selectedThumb--sidebar">대표 썸네일</div>
           <div class="thumbDropZone__copy">
-            <div class="thumbDropZone__iconWrap">
+            <div v-if="!props.displayThumbnailUrl" class="thumbDropZone__iconWrap">
               <SvgIcon :src="addPhotoAlternateIcon" alt="" class="thumbDropZone__icon" />
             </div>
             <div class="thumbDropZone__title">{{ props.displayThumbnailUrl ? '썸네일 변경' : '클릭 & 드래그' }}</div>

frontend/src/components/admin/AdminTierlistsSection.vue

@@ -45,7 +45,6 @@ const props = defineProps({
             :target="props.templateRequestSourceUrl(request) ? '_blank' : undefined"
             :rel="props.templateRequestSourceUrl(request) ? 'noreferrer' : undefined"
             :aria-disabled="!props.templateRequestSourceUrl(request)"
-            @click.prevent="props.templateRequestSourceUrl(request) && window.open(props.templateRequestSourceUrl(request), '_blank', 'noopener,noreferrer')"
           >
             <img v-if="request.thumbnailSrc" class="tierAdminCard__thumb" :src="toApiUrl(request.thumbnailSrc)" :alt="request.sourceTierListTitle" draggable="false" />
             <div v-else class="tierAdminCard__thumb tierAdminCard__thumb--empty"></div>

frontend/src/composables/useAdminCustomItems.js

@@ -167,7 +167,7 @@ export function useAdminCustomItems({
 
     try {
       item.isPromoting = true
-      await api.promoteAdminCustomItem(item.id, { gameId: customItemModalTargetTemplateId.value })
+      await api.promoteAdminTemplateItem(item.id, { gameId: customItemModalTargetTemplateId.value })
       const targetTemplateName =
         templates.value.find((template) => template.id === customItemModalTargetTemplateId.value)?.name || customItemModalTargetTemplateId.value
       if (selectedTemplateId.value === customItemModalTargetTemplateId.value) await loadTemplate()

frontend/src/composables/useAdminFeaturedGames.js

@@ -70,7 +70,7 @@ export function useAdminFeaturedGames({
   async function saveFeaturedOrder() {
     resetMessages()
     try {
-      const data = await api.updateAdminGameDisplayOrder({ gameIds: featuredTemplateIds.value })
+      const data = await api.updateAdminTemplateDisplayOrder({ gameIds: featuredTemplateIds.value })
       templates.value = data.games || []
       featuredTemplateIds.value = templates.value
         .filter((template) => template.displayRank != null)

frontend/src/composables/useAdminGameManager.js

@@ -131,7 +131,7 @@ export function useAdminGameManager({
 
     try {
       isGameLoading.value = true
-      const data = await api.getGame(selectedTemplateId.value)
+      const data = await api.getTopic(selectedTemplateId.value)
       selectedTemplate.value = {
         ...data,
         items: (data.items || []).map((item) => ({
@@ -155,7 +155,7 @@ export function useAdminGameManager({
     const preserveUploadState = !!options.preserveUploadState
     resetMessages()
     try {
-      const res = await fetch(toApiUrl('/api/admin/games'), {
+      const res = await fetch(toApiUrl('/api/admin/templates'), {
         method: 'POST',
         credentials: 'include',
         headers: { 'Content-Type': 'application/json' },
@@ -283,7 +283,7 @@ export function useAdminGameManager({
           fd.append('images', entry.file)
           fd.append('labels', entry.label.trim())
         })
-        const res = await fetch(toApiUrl(`/api/admin/games/${encodeURIComponent(selectedTemplateId.value)}/images`), {
+        const res = await fetch(toApiUrl(`/api/admin/templates/${encodeURIComponent(selectedTemplateId.value)}/images`), {
           method: 'POST',
           credentials: 'include',
           body: fd,
@@ -336,7 +336,7 @@ export function useAdminGameManager({
     if (!selectedTemplateId.value || !selectedTemplate.value?.items?.length) return
 
     try {
-      const data = await api.updateAdminGameItemDisplayOrder(selectedTemplateId.value, {
+      const data = await api.updateAdminTemplateItemDisplayOrder(selectedTemplateId.value, {
         itemIds: selectedTemplate.value.items.map((item) => item.id),
       })
       selectedTemplate.value = {

frontend/src/lib/api.js

@@ -1,25 +1,54 @@
 import { toApiUrl } from './runtime'
 
+function emitBackendStatus(detail) {
+  if (typeof window === 'undefined') return
+  window.dispatchEvent(new CustomEvent('tier-maker:backend-status', { detail }))
+}
+
 async function request(path, { method = 'GET', body, headers } = {}) {
-  const res = await fetch(toApiUrl(path), {
-    method,
-    credentials: 'include',
-    headers: {
-      ...(body ? { 'Content-Type': 'application/json' } : {}),
-      ...(headers || {}),
-    },
-    body: body ? JSON.stringify(body) : undefined,
-  })
+  let res
+  try {
+    res = await fetch(toApiUrl(path), {
+      method,
+      credentials: 'include',
+      headers: {
+        ...(body ? { 'Content-Type': 'application/json' } : {}),
+        ...(headers || {}),
+      },
+      body: body ? JSON.stringify(body) : undefined,
+    })
+  } catch (error) {
+    emitBackendStatus({
+      state: 'offline',
+      message: '서버 연결을 확인할 수 없어 잠시 후 다시 시도해주세요.',
+      path,
+    })
+    throw error
+  }
 
   const contentType = res.headers.get('content-type') || ''
   const data = contentType.includes('application/json') ? await res.json() : await res.text()
 
   if (!res.ok) {
+    if (res.status >= 500 && data?.error === 'db_init_failed') {
+      emitBackendStatus({
+        state: 'maintenance',
+        message: '서비스 점검 중이거나 데이터베이스 초기화 중입니다. 잠시 후 다시 이용해주세요.',
+        path,
+      })
+    } else if (res.status >= 500) {
+      emitBackendStatus({
+        state: 'maintenance',
+        message: '서비스 내부 점검이 필요합니다. 잠시 후 다시 이용해주세요.',
+        path,
+      })
+    }
     const err = new Error('request_failed')
     err.status = res.status
     err.data = data
     throw err
   }
+  emitBackendStatus({ state: 'online', path })
   return data
 }
 
@@ -30,27 +59,27 @@ export const api = {
   login: ({ email, password }) => request('/api/auth/login', { method: 'POST', body: { email, password } }),
   logout: () => request('/api/auth/logout', { method: 'POST' }),
 
-  listGames: () => request('/api/games'),
-  getGame: (gameId) => request(`/api/games/${encodeURIComponent(gameId)}`),
-  favoriteGame: (gameId) => request(`/api/games/${encodeURIComponent(gameId)}/favorite`, { method: 'POST' }),
-  unfavoriteGame: (gameId) => request(`/api/games/${encodeURIComponent(gameId)}/favorite`, { method: 'DELETE' }),
-  updateAdminGameDisplayOrder: (payload) => request('/api/admin/games/display-order', { method: 'PATCH', body: payload }),
-  updateAdminGameItemDisplayOrder: (gameId, payload) =>
-    request(`/api/admin/games/${encodeURIComponent(gameId)}/items/display-order`, { method: 'PATCH', body: payload }),
-  updateAdminGame: (gameId, payload) =>
-    request(`/api/admin/games/${encodeURIComponent(gameId)}`, { method: 'PATCH', body: payload }),
-  updateAdminGameItem: (gameId, itemId, payload) =>
-    request(`/api/admin/games/${encodeURIComponent(gameId)}/items/${encodeURIComponent(itemId)}`, { method: 'PATCH', body: payload }),
+  listTopics: () => request('/api/topics'),
+  getTopic: (topicId) => request(`/api/topics/${encodeURIComponent(topicId)}`),
+  favoriteTopic: (topicId) => request(`/api/topics/${encodeURIComponent(topicId)}/favorite`, { method: 'POST' }),
+  unfavoriteTopic: (topicId) => request(`/api/topics/${encodeURIComponent(topicId)}/favorite`, { method: 'DELETE' }),
+  updateAdminTemplateDisplayOrder: (payload) => request('/api/admin/templates/display-order', { method: 'PATCH', body: payload }),
+  updateAdminTemplateItemDisplayOrder: (templateId, payload) =>
+    request(`/api/admin/templates/${encodeURIComponent(templateId)}/items/display-order`, { method: 'PATCH', body: payload }),
+  updateAdminTemplate: (templateId, payload) =>
+    request(`/api/admin/templates/${encodeURIComponent(templateId)}`, { method: 'PATCH', body: payload }),
+  updateAdminTemplateItem: (templateId, itemId, payload) =>
+    request(`/api/admin/templates/${encodeURIComponent(templateId)}/items/${encodeURIComponent(itemId)}`, { method: 'PATCH', body: payload }),
   listAdminCustomItems: ({ q = '', page = 1, limit = 50, filter = 'all' } = {}) =>
     request(
       `/api/admin/custom-items?q=${encodeURIComponent(q)}&page=${encodeURIComponent(page)}&limit=${encodeURIComponent(limit)}&filter=${encodeURIComponent(filter)}`
     ),
-  listAdminTierLists: ({ q = '', gameId = '', page = 1, limit = 50 } = {}) =>
+  listAdminTierLists: ({ q = '', topicId = '', gameId = '', page = 1, limit = 50 } = {}) =>
     request(
-      `/api/admin/tierlists?q=${encodeURIComponent(q)}&gameId=${encodeURIComponent(gameId)}&page=${encodeURIComponent(page)}&limit=${encodeURIComponent(limit)}`
+      `/api/admin/tierlists?q=${encodeURIComponent(q)}&topicId=${encodeURIComponent(topicId || gameId)}&page=${encodeURIComponent(page)}&limit=${encodeURIComponent(limit)}`
     ),
-  getAdminTierListStats: ({ q = '', gameId = '' } = {}) =>
-    request(`/api/admin/tierlists/stats?q=${encodeURIComponent(q)}&gameId=${encodeURIComponent(gameId)}`),
+  getAdminTierListStats: ({ q = '', topicId = '', gameId = '' } = {}) =>
+    request(`/api/admin/tierlists/stats?q=${encodeURIComponent(q)}&topicId=${encodeURIComponent(topicId || gameId)}`),
   updateAdminTierList: (tierListId, payload) =>
     request(`/api/admin/tierlists/${encodeURIComponent(tierListId)}`, { method: 'PATCH', body: payload }),
   deleteAdminTierList: (tierListId) =>
@@ -66,13 +95,13 @@ export const api = {
   cleanupAdminMissingImageReferences: () => request('/api/admin/image-assets/missing/cleanup', { method: 'POST', body: {} }),
   listAdminUnusedImageAssets: ({ limit = 100, minAgeHours = 24 } = {}) => request(`/api/admin/image-assets/orphans?limit=${encodeURIComponent(limit)}&minAgeHours=${encodeURIComponent(minAgeHours)}`),
   cleanupAdminUnusedImageAssets: (payload) => request('/api/admin/image-assets/cleanup', { method: 'POST', body: payload || {} }),
-  promoteAdminCustomItem: (itemId, payload) =>
+  promoteAdminTemplateItem: (itemId, payload) =>
     request(`/api/admin/custom-items/${encodeURIComponent(itemId)}/promote`, { method: 'POST', body: payload }),
   updateAdminCustomItemLabel: (itemId, payload) =>
     request(`/api/admin/custom-items/${encodeURIComponent(itemId)}/label`, { method: 'PATCH', body: payload }),
   promoteAdminTierListItems: (tierListId, payload) =>
     request(`/api/admin/tierlists/${encodeURIComponent(tierListId)}/promote-items`, { method: 'POST', body: payload }),
-  createAdminGameTemplateFromTierList: (tierListId, payload) =>
+  createAdminTemplateFromTierList: (tierListId, payload) =>
     request(`/api/admin/tierlists/${encodeURIComponent(tierListId)}/create-game-template`, { method: 'POST', body: payload }),
   startAdminTemplateRequestReview: (requestId) =>
     request(`/api/admin/template-requests/${encodeURIComponent(requestId)}/review`, { method: 'POST', body: {} }),
@@ -111,10 +140,10 @@ export const api = {
   },
   deleteAdminUser: (userId) => request(`/api/admin/users/${encodeURIComponent(userId)}`, { method: 'DELETE' }),
 
-  listPublicTierLists: (gameId) =>
-    request(`/api/tierlists/public?gameId=${encodeURIComponent(gameId || '')}`),
-  searchPublicTierLists: (gameId, q = '') =>
-    request(`/api/tierlists/public?gameId=${encodeURIComponent(gameId || '')}&q=${encodeURIComponent(q || '')}`),
+  listPublicTierListsByTopic: (topicId) =>
+    request(`/api/tierlists/public?topicId=${encodeURIComponent(topicId || '')}`),
+  searchPublicTierListsByTopic: (topicId, q = '') =>
+    request(`/api/tierlists/public?topicId=${encodeURIComponent(topicId || '')}&q=${encodeURIComponent(q || '')}`),
   searchAllPublicTierLists: (q = '') => request(`/api/tierlists/public?q=${encodeURIComponent(q || '')}`),
   listMyTierLists: () => request('/api/tierlists/me'),
   listMyFavoriteTierLists: ({ q = '', sort = 'favorited' } = {}) =>
@@ -146,4 +175,24 @@ export const api = {
   deleteAdminCustomItem: (itemId) => request(`/api/admin/custom-items/${encodeURIComponent(itemId)}`, { method: 'DELETE' }),
   deleteAdminUnusedCustomItems: ({ q = '' } = {}) =>
     request(`/api/admin/custom-items?q=${encodeURIComponent(q)}`, { method: 'DELETE' }),
+
+  listGames: () => request('/api/games'),
+  getGame: (gameId) => request(`/api/games/${encodeURIComponent(gameId)}`),
+  favoriteGame: (gameId) => request(`/api/games/${encodeURIComponent(gameId)}/favorite`, { method: 'POST' }),
+  unfavoriteGame: (gameId) => request(`/api/games/${encodeURIComponent(gameId)}/favorite`, { method: 'DELETE' }),
+  updateAdminGameDisplayOrder: (payload) => request('/api/admin/games/display-order', { method: 'PATCH', body: payload }),
+  updateAdminGameItemDisplayOrder: (gameId, payload) =>
+    request(`/api/admin/games/${encodeURIComponent(gameId)}/items/display-order`, { method: 'PATCH', body: payload }),
+  updateAdminGame: (gameId, payload) =>
+    request(`/api/admin/games/${encodeURIComponent(gameId)}`, { method: 'PATCH', body: payload }),
+  updateAdminGameItem: (gameId, itemId, payload) =>
+    request(`/api/admin/games/${encodeURIComponent(gameId)}/items/${encodeURIComponent(itemId)}`, { method: 'PATCH', body: payload }),
+  promoteAdminCustomItem: (itemId, payload) =>
+    request(`/api/admin/custom-items/${encodeURIComponent(itemId)}/promote`, { method: 'POST', body: payload }),
+  createAdminGameTemplateFromTierList: (tierListId, payload) =>
+    request(`/api/admin/tierlists/${encodeURIComponent(tierListId)}/create-game-template`, { method: 'POST', body: payload }),
+  listPublicTierLists: (gameId) =>
+    request(`/api/tierlists/public?topicId=${encodeURIComponent(gameId || '')}`),
+  searchPublicTierLists: (gameId, q = '') =>
+    request(`/api/tierlists/public?topicId=${encodeURIComponent(gameId || '')}&q=${encodeURIComponent(q || '')}`),
 }

frontend/src/router/index.js

@@ -16,9 +16,10 @@ export function createRouter() {
     history: createWebHistory(),
     routes: [
       { path: '/', name: 'home', component: HomeView },
-      { path: '/topics/:gameId', alias: ['/games/:gameId'], name: 'gameHub', component: GameHubView },
-      { path: '/editor/:gameId/new', name: 'newEditor', component: TierEditorView },
-      { path: '/editor/:gameId/:tierListId', name: 'editEditor', component: TierEditorView },
+      { path: '/games/:gameId', redirect: (to) => `/topics/${encodeURIComponent(String(to.params.gameId || ''))}` },
+      { path: '/topics/:topicId', name: 'topicHub', component: GameHubView },
+      { path: '/editor/:topicId/new', name: 'newEditor', component: TierEditorView },
+      { path: '/editor/:topicId/:tierListId', name: 'editEditor', component: TierEditorView },
       { path: '/login', name: 'login', component: LoginView },
       { path: '/me', name: 'me', component: MyTierListsView },
       { path: '/favorites', name: 'favorites', component: FavoriteTierListsView },

frontend/src/views/AdminView.vue

@@ -1,5 +1,5 @@
 <script setup>
-import { Teleport, computed, inject, onMounted, onUnmounted, ref, watch } from 'vue'
+import { Teleport, computed, inject, nextTick, onMounted, onUnmounted, ref, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { api } from '../lib/api'
 import { editorPath } from '../lib/paths'
@@ -787,7 +787,7 @@ async function selectAdminTemplate(templateId) {
 
 async function refreshTemplates() {
   try {
-    const data = await api.listGames()
+    const data = await api.listTopics()
     templates.value = data.games || []
     featuredTemplateIds.value = templates.value
       .filter((template) => template.displayRank != null)
@@ -1148,7 +1148,7 @@ async function uploadThumbnail() {
   try {
     const fd = new FormData()
     fd.append('thumbnail', thumbFile.value)
-    const res = await fetch(toApiUrl(`/api/admin/games/${encodeURIComponent(selectedTemplateId.value)}/thumbnail`), {
+    const res = await fetch(toApiUrl(`/api/admin/templates/${encodeURIComponent(selectedTemplateId.value)}/thumbnail`), {
       method: 'POST',
       credentials: 'include',
       body: fd,
@@ -1170,7 +1170,7 @@ async function saveTemplateVisibility() {
   if (!selectedTemplate.value?.game?.id) return
   try {
     gameVisibilitySaving.value = true
-    const data = await api.updateAdminGame(selectedTemplate.value.game.id, {
+    const data = await api.updateAdminTemplate(selectedTemplate.value.game.id, {
       isPublic: !!selectedTemplate.value.game.isPublic,
     })
     selectedTemplate.value = {
@@ -1215,9 +1215,27 @@ async function toggleSelectedTemplateVisibility(nextValue) {
 
 async function removeTemplateItem(itemId) {
   resetMessages()
+  if (!selectedTemplateId.value) return
   try {
+    const usageRes = await fetch(
+      toApiUrl(`/api/admin/templates/${encodeURIComponent(selectedTemplateId.value)}/items/${encodeURIComponent(itemId)}/usage`),
+      {
+        credentials: 'include',
+      }
+    )
+    if (!usageRes.ok) throw new Error('usage_failed')
+
+    const usageData = await usageRes.json()
+    const usage = usageData?.usage || { totalCount: 0, publicCount: 0, privateCount: 0 }
+    const impactMessage = usage.totalCount
+      ? `이 아이템은 이미 저장된 티어표 ${usage.totalCount}개(공개 ${usage.publicCount}개, 비공개 ${usage.privateCount}개)에서 사용 중이에요.\n기존 티어표에는 영향을 주지 않고, 이후 새로 만드는 티어표에서만 제외됩니다.\n정말 삭제할까요?`
+      : '이 기본 아이템을 삭제할까요?\n기존 저장 티어표에는 영향을 주지 않고, 이후 새로 만드는 티어표에서만 제외됩니다.'
+    const ok = window.confirm(impactMessage)
+    if (!ok) return
+
+    const previousScrollY = window.scrollY
     const res = await fetch(
-      toApiUrl(`/api/admin/games/${encodeURIComponent(selectedTemplateId.value)}/items/${encodeURIComponent(itemId)}`),
+      toApiUrl(`/api/admin/templates/${encodeURIComponent(selectedTemplateId.value)}/items/${encodeURIComponent(itemId)}`),
       {
         method: 'DELETE',
         credentials: 'include',
@@ -1226,6 +1244,8 @@ async function removeTemplateItem(itemId) {
     if (!res.ok) throw new Error('failed')
 
     await loadTemplate()
+    await nextTick()
+    window.scrollTo({ top: previousScrollY, behavior: 'auto' })
     success.value = '템플릿 기본 아이템을 삭제했어요.'
   } catch (e) {
     error.value = '템플릿 기본 아이템 삭제에 실패했어요.'
@@ -1244,7 +1264,7 @@ async function saveTemplateItemLabel(item) {
 
   try {
     item.isSavingLabel = true
-    const data = await api.updateAdminGameItem(selectedTemplateId.value, item.id, { label: nextLabel })
+    const data = await api.updateAdminTemplateItem(selectedTemplateId.value, item.id, { label: nextLabel })
     item.label = data.item.label
     item.draftLabel = data.item.label
     success.value = '기본 아이템 이름을 수정했어요.'
@@ -1263,7 +1283,7 @@ async function removeTemplate() {
   if (!ok) return
 
   try {
-    const res = await fetch(toApiUrl(`/api/admin/games/${encodeURIComponent(selectedTemplateId.value)}`), {
+    const res = await fetch(toApiUrl(`/api/admin/templates/${encodeURIComponent(selectedTemplateId.value)}`), {
       method: 'DELETE',
       credentials: 'include',
     })
@@ -1589,7 +1609,7 @@ async function confirmTierListImport() {
         return
       }
 
-      const data = await api.createAdminGameTemplateFromTierList(tierList.id, {
+      const data = await api.createAdminTemplateFromTierList(tierList.id, {
         gameId: nextGameId,
         name: nextGameName,
         itemIds,

frontend/src/views/GameHubView.vue

@@ -10,7 +10,7 @@ const route = useRoute()
 const router = useRouter()
 const auth = useAuthStore()
 
-const topicId = computed(() => route.params.gameId)
+const topicId = computed(() => route.params.topicId || route.params.gameId)
 const topicName = ref('')
 const tierLists = ref([])
 const error = ref('')
@@ -54,8 +54,8 @@ async function loadTierLists() {
   isTopicLoading.value = true
   try {
     const [gameRes, listRes] = await Promise.all([
-      api.getGame(topicId.value),
-      api.searchPublicTierLists(topicId.value, query.value),
+      api.getTopic(topicId.value),
+      api.searchPublicTierListsByTopic(topicId.value, query.value),
     ])
     topicName.value = gameRes.game?.name || ''
     brokenThumbnailIds.value = {}

frontend/src/views/HomeView.vue

@@ -36,7 +36,7 @@ const templates = computed(() => {
 
 async function loadTemplates() {
   try {
-    const data = await api.listGames()
+    const data = await api.listTopics()
     templateRecords.value = data.games || []
   } catch (e) {
     error.value = '백엔드에 연결할 수 없어요. backend 서버가 실행 중인지 확인해주세요.'
@@ -60,7 +60,7 @@ async function toggleFavorite(template, event) {
 
   try {
     loadingFavoriteId.value = template.id
-    const res = template.isFavorited ? await api.unfavoriteGame(template.id) : await api.favoriteGame(template.id)
+    const res = template.isFavorited ? await api.unfavoriteTopic(template.id) : await api.favoriteTopic(template.id)
     templateRecords.value = templateRecords.value.map((entry) => (entry.id === template.id ? { ...entry, ...res.game } : entry))
   } catch (e) {
     error.value = '즐겨찾기 변경에 실패했어요.'

frontend/src/views/TierEditorView.vue

@@ -20,7 +20,7 @@ const auth = useAuthStore()
 const toast = useToast()
 const globalRightRailOpen = inject('rightRailOpen', ref(true))
 const localRightRailTarget = inject('localRightRailTarget', '#local-right-rail-root')
-const templateId = computed(() => route.params.gameId)
+const templateId = computed(() => route.params.topicId || route.params.gameId)
 const tierListId = computed(() => route.params.tierListId)
 const previewMode = computed(() => route.query.preview === '1')
 const templateName = ref('')
@@ -898,7 +898,7 @@ onMounted(() => {
     }
 
     try {
-      const gameRes = await api.getGame(templateId.value)
+      const gameRes = await api.getTopic(templateId.value)
       templateName.value = gameRes.game?.name || templateId.value
       const base = (gameRes.items || []).map((img) => ({
         id: img.id,