New apps/backup service (ADR 0015): nightly pg_dump -Fc plus one tar of the
uploads/plugins volumes as a consistent restore set on a new backups volume,
retention prune that never removes the newest complete set, atomic
status.json for the readiness/admin consumers (#85/#86), and a failure mail
sent directly via nodemailer (the api may be the broken part) with de/en
texts in the shared mails catalog. BACKUP_RUN_ONCE=1 gives the on-demand
path; deploy/backup/restore.sh automates the documented restore runbook.
The pure secret-store helpers moved to @dorfteich/shared so the sidecar
resolves the wizard-written SMTP relay exactly like the api.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EwZ4jR4KFAPvpjWevfUGX1
