snapshot: preserve backup UX, remote target setup, and docs updates

README.md

@@ -78,3 +78,24 @@ Run a real workflow verification (onboarding + offboarding), including PDF check
   - `docker compose exec -T web python manage.py run_staging_e2e_check --email-check mailhog --mailhog-api-url http://mailhog:8025/api/v2/messages`
 - Skip Nextcloud existence checks:
   - `docker compose exec -T web python manage.py run_staging_e2e_check --skip-nextcloud`
+
+## Backup and restore
+Use the repo-level scripts so database and media backups stay consistent.
+
+- Create a backup bundle:
+  - `make backup-create`
+- Verify a backup non-destructively:
+  - `make backup-verify BACKUP_DIR=backend/backups/backup_YYYYmmdd_HHMMSS`
+- Real restore:
+  - `./scripts/backup_restore.sh --yes-restore backend/backups/backup_YYYYmmdd_HHMMSS`
+
+What is included:
+- PostgreSQL custom-format dump: `db.dump`
+- media archive: `media.tar.gz`
+- metadata file and SHA256 checksums
+- default storage path: `backend/backups/`
+
+Verification behavior:
+- restores the dump into a temporary verification database
+- extracts media into a temporary directory
+- checks that the restored DB and media structure are readable