관리자 레이아웃과 네비게이션 정리

server/api/auth/account.delete.js

@@ -1,7 +1,8 @@
 import bcrypt from 'bcrypt'
 import { createError, readBody } from 'h3'
 import { z } from 'zod'
-import { deleteMember, getUserByIdWithPassword } from '../../repositories/member-repository'
+import { countOwnerMembers, deleteMember, getUserByIdWithPassword, MEMBER_ROLE } from '../../repositories/member-repository'
+import { clearAdminSession } from '../../utils/admin-auth'
 import { clearMemberSession, requireMemberSession } from '../../utils/member-auth'
 import { removeManagedAvatarAsset } from '../../utils/member-avatar'
 
@@ -41,13 +42,20 @@ export default defineEventHandler(async (event) => {
     })
   }
 
+  if (user.role === MEMBER_ROLE.OWNER && (await countOwnerMembers()) <= 1) {
+    throw createError({
+      statusCode: 400,
+      message: '최소 1명의 소유자 권한은 유지되어야 합니다.'
+    })
+  }
+
   if (user.avatarUrl) {
     await removeManagedAvatarAsset(user.avatarUrl)
   }
 
   await deleteMember(session.userId)
   clearMemberSession(event)
+  clearAdminSession(event)
 
   return { ok: true }
 })
-