Three bugs against the PBS encryption flow:
1. Create-scheduled-job with encryption failed with "Recovery setup
failed: no PBS keyfile present" whenever the operator picked
"Generate a new keyfile" but had no keyfile installed yet. The
frontend called /pbs-recovery/setup before creating the job, but
the keyfile was only materialised later during job creation. The
endpoint now generates the keyfile atomically if missing before
building the escrow blob — same prompt-first order the CLI wizard
applies. Existing keyfiles are still trusted and never rotated.
2. Importing a valid PBS keyfile via the Web dialog returned a
generic "did not recognise this file as a valid PBS keyfile" that
hid the real reason (kdf mismatch, missing passphrase, corrupt
JSON, ...). The endpoint now attaches the stderr of
`proxmox-backup-client key info` as `tool_output` and the frontend
renders it verbatim inside the red banner. Also strips a leading
UTF-8 BOM before validating so an editor-inserted BOM stops being
silently classified as "invalid keyfile".
3. Downloading an encrypted PBS snapshot failed with "missing key —
manifest was created with key XX:XX:..." even when the correct
keyfile was installed at /usr/local/share/proxmenux/pbs-key.conf,
because the restore worker invoked `proxmox-backup-client restore`
without `--keyfile`. The flag is now passed whenever a local
keyfile exists (PBS ignores it for unencrypted archives). On a
fingerprint mismatch the error now appends the installed key's
fingerprint so it can be compared side-by-side with the manifest's
expected value — same fingerprint also exposed via
/pbs-recovery/status for the UI.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
