cloudinit/user-data.yaml and tools/cmd/railiance-plan-host relocated to railiance-infra per ADR-003. Tombstone stubs left in place. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- tools/cmd/railiance-backup: pg_dump + config snapshot, age-encrypted, uploaded to Nextcloud file drop via curl PUT. Daily cron target. - tools/cmd/railiance-preflight: pre-migration safety gate — checks backup freshness, all repos clean/pushed, age key present. - bin/railiance: added backup and preflight subcommands. - DECISIONS.md: decision log (D1 ingress Nginx+Traefik, D2 Nextcloud backup). - .gitignore: exclude *backup-dropoff-link* files (contain upload tokens). - CLAUDE.md: state hub session protocol update. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
