The data export feature (system backup) writes data.tgz to
`config.tmpPath` which resolves to `<rootPath>/.tmp/`. However,
`initFile.ts` only created `<dataPath>/log/.tmp/` (used for crontab
list temp files), never the root-level `.tmp/` directory.
In Docker deployments, `shell/share.sh`'s `fix_config()` creates
`$dir_root/.tmp` during shell initialization, but local/non-Docker
deployments that start the Node service directly skip the shell init,
causing a 404 ENOENT error when attempting to export/backup data.
Add `rootTmpPath` (`<rootPath>/.tmp/`) to the directories array in
`initFile.ts` so it is created during Node service startup regardless
of deployment method.