Found while testing live backups end-to-end:
- Engine backup adapters logged to stdout, so the caller's $() snapshot-id
capture was polluted with log text — verify-after-backup then failed with
'no matching ID' on every run. Route their log lines to stderr so stdout is
only the id (restic/borg/kopia).
- 'libreportal app restore <app> --latest' (as the help advertises) and the
bare 'restore <app>' both failed: --latest was passed to restic verbatim and
unset args arrive as the literal 'empty'. Normalise both to 'latest'.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: librelad <librelad@digitalangels.vip>
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