4ae7335b31
Adds auto-detection of pre-existing Samba shares and NFS exports when nasctl is installed on a host that already has these configs. New package internal/importer parses smb.conf (INI-style) and /etc/exports (line-based) and imports them into SQLite. Imported shares/exports are marked dirty so the user must review and apply manually before any file is overwritten. Backup: before the first Apply, each module backs up the original config to <path>.nasctl.bak.<timestamp> (one time only). New CLI flag --import-on-boot / NASCTL_IMPORT_ON_BOOT env var (default false, opt-in). New API endpoints: GET /api/import/status POST /api/import/samba POST /api/import/nfs New DB methods ReplaceSambaShares/ReplaceNFSExports (transactional replace-all), guarded by import.samba.done / import.nfs.done settings flags.