SiYuan: Broken access control in `/api/tag/getTag` — Reader role can mutate `Conf.Tag.Sort` and persist to disk

Summary POST /api/tag/getTag is registered with model.CheckAuth only, omitting both model.CheckAdminRole and model.CheckReadonly, despite the handler performing a configuration write that is normally guarded by both. Any authenticated user — including publish-service RoleReader accounts and...