-- 用户确认头像与其他资源共用七牛公开空间；owner 与绑定权限仍由服务端核对。
ALTER TABLE public.assets DROP CONSTRAINT IF EXISTS assets_avatar_visibility_check;
ALTER TABLE public.admin_audit_logs DROP CONSTRAINT admin_audit_logs_actor_type_check;
ALTER TABLE public.admin_audit_logs ADD CONSTRAINT admin_audit_logs_actor_type_check CHECK (actor_type IN ('admin', 'system', 'migration', 'user'));