James Valleroy 156d0b761f
backups: Generate SSH client key if needed
Tests:

- Click on Add Remote Backup Location. Logs show that SSH client key is
  generated. The private key is readable only by plinth user.

- Go back, and click on Add Remote Backup Location again. Logs show that SSH
  client key already exists.

Signed-off-by: James Valleroy <jvalleroy@mailbox.org>
2026-02-05 22:32:52 -08:00
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