docs(wiki): registry.kzntsv.site auth-model concept + bind-mount config-mode postmortem

- concepts/registry-kzntsv-auth-model.md (new): standalone registry:2 + htpasswd
  Basic, binary access, NOT Gitea-packages; how to add htpasswd users (hot-reload),
  GC via v2 DELETE + host garbage-collect; users vitya + books-ci.
- concepts/bindmount-config-edit-preserve-mode.md (new): mktemp+mv drops file mode
  644->600 -> non-root container (uid 1000) EACCES crash-loop; chmod --reference.
  Worked example: books-job-scheduler prod-down incident 2026-06-18.
- vds-kzntsv entity registry row links the auth-model concept.
- index.md + log.md updated.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.wiki/index.md

@@ -23,6 +23,7 @@ Catalog of all wiki pages. One line per page, organized by type. Updated on ever
 
 - [admin-infra-project](concepts/admin-infra-project.md) — design + migration plan для OpeItcLoc03/admin (canonical)
 - [backup-inventory-2026-06](concepts/backup-inventory-2026-06.md) — карта всех машин × что реально бэкапится (с доказательством); дыры по приоритету (kreknin SPOF, nl-vds x-ui.db, bookva-*, openwrt) — триггер: MSSQL 3-нед gap
+- [bindmount-config-edit-preserve-mode](concepts/bindmount-config-edit-preserve-mode.md) — правка bind-mounted config'а через mktemp+mv роняет режим 644→600 → non-root контейнер (uid 1000) EACCES crash-loop; chmod --reference=backup. Инцидент books-job-scheduler 2026-06-18
 - [vds-kzntsv-ssh-access](concepts/vds-kzntsv-ssh-access.md) — SSH access audit на vds-kzntsv (infra VDS), retained keys + add/revoke processes (was misnamed `books-ssh-access` до 2026-05-25 — content всегда был про vds-kzntsv)
 - [compose-bcrypt-escape-trap](concepts/compose-bcrypt-escape-trap.md) — Docker Compose ест `$` в bcrypt hashes
 - [db-tls-self-signed-via-traefik-raw-tcp](concepts/db-tls-self-signed-via-traefik-raw-tcp.md) — DB TLS через traefik raw TCP с self-signed certs
@@ -44,6 +45,7 @@ Catalog of all wiki pages. One line per page, organized by type. Updated on ever
 - [reality-pq-mldsa65-dest-incompatibility](concepts/reality-pq-mldsa65-dest-incompatibility.md) — REALITY+ML-DSA-65 (PQ) не работает с не-PQ dest (Akamai/intel шлёт HRR); fix = PQ-совместимый dest или выключить PQ; **caveat: снятие PQ ≠ рабочий Reality у GUI-клиентов**
 - [recovery-architecture-snapshot](concepts/recovery-architecture-snapshot.md) — текущая recovery architecture (2026-05-19/21, attempt 2)
 - [registry-gc-mount-and-modify-flag](concepts/registry-gc-mount-and-modify-flag.md) — Docker Registry GC mount layout + `-m` flag
+- [registry-kzntsv-auth-model](concepts/registry-kzntsv-auth-model.md) — registry.kzntsv.site = standalone registry:2 + htpasswd Basic (бинарный доступ, НЕ Gitea-packages, нет per-repo ACL/robot-токенов); как заводить htpasswd-юзеров (hot-reload), GC через v2 DELETE; юзеры vitya + books-ci
 - [rusonyx-vps-onboarding-quirks](concepts/rusonyx-vps-onboarding-quirks.md) — Rusonyx VPS onboarding quirks (Astra Облако / myvm.rusonyx.ru)
 - [traefik-acme-json-to-iis-cert-import](concepts/traefik-acme-json-to-iis-cert-import.md) — Экспорт LE certs из traefik acme.json в IIS (PFX + SNI bindings)
 - [traefik-file-watch-wsl2-broken](concepts/traefik-file-watch-wsl2-broken.md) — Traefik file-watch broken под Docker Desktop Windows (WSL2 9p mount)