backup(books-vds): daily 06:00 MSK pipeline to kreknin live 🟢

- scripts/books-vds-backup-daily-kreknin/ — run.sh + .env.example + README
- ES path.repo bootstrap (one-time stack edit, snapshot repo 'kreknin' registered)
- curl smtps://yandex:465 email (CRLF + Date headers, no msmtp dep on CentOS 7)
- StrictHostKeyChecking=yes + pre-populated known_hosts (CentOS 7 no accept-new)
- cron /etc/cron.d/books-vds-backup live, initial sync 4.87 GB in 13m28s, ntfy push sent
- wiki: entities/books-vds.md + sources/books-vds-backup-daily-kreknin-2026-05-25.md created
- wiki: concepts/books-ssh-access → vds-kzntsv-ssh-access (was lying about books on vds-kzntsv)
- .tasks/books-vds-backup-daily-kreknin.md closed 🟢 pending phone-side verify

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.tasks/STATUS.md

@@ -1,5 +1,7 @@
 # Admin Task Board
-_Updated: 2026-05-25 (`unify-backup-notifications` 🟢 closed — 3 scripts под единый push+email format committed `73ad6dd0`, VDS+RUVDS deployed+smoke ✓, windows-host self-deploy на user'е через `scripts/windows-host-fallback-backup-daily/deploy.ps1` elevated. Также удалён obsolete `.tasks/NEXT-SESSION-PROMPT.md` (содержал plaintext creds в git history с 2026-05-21; user accept risk без rotation/rewrite). VDS `run.sh` теперь в repo как canonical source. Pre-existing: все 3 daily backups live на kreknin.)_
+_Updated: 2026-05-25 (`books-vds-backup-daily-kreknin` 🟢 closed — 4-я daily backup pipeline на kreknin, теперь покрыта `books VDS` 89.253.255.133 (host4g.ru). Pattern mirror VDS-infra (rsync+--link-dest), ES snapshot via REST API (новый repo `kreknin`, потребовал one-time stack edit + recreate ES), email через `curl smtps://yandex:465` без msmtp. Initial sync 4.87 GB in 13m28s, cron 06:00 MSK live. Также fix вики: `concepts/books-ssh-access.md` → `vds-kzntsv-ssh-access.md` (был misnamed — врал что books живёт на vds-kzntsv), `entities/books-vds.md` создан с factsheet'ом. **Phone-side ntfy + email — pending user confirmation на следующем раунде.**)_
+
+## 🟢 [books-vds-backup-daily-kreknin] — closed 2026-05-25 — daily backup books VDS (89.253.255.133, host4g.ru, CentOS 7) → kreknin в 06:00 MSK. DB dumps (mariadb/mongo×2) + ES snapshot via REST → rsync 4.87GB → ntfy/email. ES path.repo bootstrap + snapshot repo `kreknin` registered. См. [books-vds-backup-daily-kreknin.md](books-vds-backup-daily-kreknin.md).
 
 ## 🟢 [unify-backup-notifications] — closed 2026-05-25 — единый формат push + email для VDS/RUVDS/windows-host (3 scripts), VDS run.sh импортирован в repo. См. [unify-backup-notifications.md](unify-backup-notifications.md) § Closed. windows-host self-deploy остаётся на user'е (elevated PS).