feat: migrate all managed LXC provisioning to OpenTofu (blue-green)

Blue-green: a new container is created beside the old one, data is copied, the
IP is moved onto it, and the old container is kept stopped as rollback for at
least a week. Keeping the IP means only the VMID changes, and its consumers
(backup jobs, backup audit) already derive it from the registry.

Batch 1 (2026-09-02): emergency-bot 148->151, docker-test 145->152,
gitea 141->153, vaultwarden 140->154, monitoring 146->155, gyro 150->156,
grimmory 149->157.
Batch 2 (2026-09-03): adguard 144->158, mihomo 143->159, ovpn-mini 132->160.
All migratable LXC are now provisioner: tofu. hermes-ai (frozen) and pbs stay.

- tofu/services.tf + tofu/svc-*.tf: one resource per service, reproducing the
  pct-config etalon. /dev/fuse -> features.fuse; /dev/net/tun ->
  device_passthrough (first live use on mihomo and ovpn-mini); gitea bind mount
  -> datastore volume (data finally reaches PBS); console { type = "shell" }
  declared explicitly (provider tracks cmode there).
- services.yml: vmid + provisioner: tofu for every migrated service; features
  strings and device notes updated to the tofu representation; also drops the
  memoir-bot entry and adds homelab_reverse_proxy_image/_unit.
- pve-*.yml: configuration play target is `{{ pve_config_target | default(...) }}`
  so it can run against <name>-new on a temp address (a bare --limit zeroes the
  play instead of retargeting it). Container-creation plays are gated behind
  `provisioner != 'tofu'` / `pve_provisioning_enabled` (meta: end_play), so a
  stray run cannot pct start a stopped OLD VMID on a live IP. Override for
  intentional legacy rollback: -e pve_<svc>_legacy_provisioning_enabled=true.
- ssh_config: drop memoir-bot; ovpn-mini gets ProxyJump none (a jump via ru-vps
  would route through the very tunnel ovpn-mini terminates).
- gyro.yml / uptime-kuma.yml: same pve_config_target override.
- roles/uptime_kuma: only freeze homelab-monitoring when the unit actually
  exists (a fresh blue-green container never had it).
- offsite-restic-yadisk.yml: the gitea restic profile now runs inside the LXC
  (hosts: gitea), since the bind-mount host path is gone after the volume move;
  lost+found excluded (unreadable in an unprivileged LXC, restic exit 3).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012uoq5AVK8mkBgg83Mq6o5V

ansible/playbooks/pve-mihomo.yml

@@ -3,6 +3,13 @@
   hosts: mini-pc
   gather_facts: false
   vars:
+    # После переезда на OpenTofu (tofu/svc-mihomo.tf, VMID 159) этот play —
+    # legacy: он таргетит СТАРЫЙ VMID 143 и его handler сделал бы pct start 143,
+    # подняв остановленный откат на боевом адресе. Пропускаем, пока реестр
+    # говорит provisioner: tofu. Для намеренного legacy rollback:
+    #   -e pve_mihomo_legacy_provisioning_enabled=true
+    pve_mihomo_legacy_provisioning_enabled: >-
+      {{ homelab_services['mihomo'].provisioner != 'tofu' }}
     mihomo_vmid: 143
     mihomo_hostname: mihomo
     mihomo_ip: 192.168.1.27/24
@@ -15,6 +22,10 @@
     - name: restart mihomo lxc
       ansible.builtin.shell: "pct stop {{ mihomo_vmid }} || true; pct start {{ mihomo_vmid }}"
       changed_when: true
+  pre_tasks:
+    - name: Skip legacy mihomo provisioning after cutover
+      ansible.builtin.meta: end_play
+      when: not (pve_mihomo_legacy_provisioning_enabled | bool)
   tasks:
     - name: Check if mihomo LXC exists
       ansible.builtin.command: "pct config {{ mihomo_vmid }}"
@@ -107,7 +118,16 @@
         ansible_become: false
 
 - name: Prepare mihomo runtime host
-  hosts: mihomo
+  # Таргет переопределяем ради blue-green переезда на OpenTofu: во время
+  # миграции этот play нужно прогнать против нового контейнера на временном
+  # адресе. Просто `--limit mihomo-new` для этого НЕ годится — лимит
+  # пересекается с паттерном play и даёт ноль хостов, а не перенацеливание
+  # (проверено 2026-09-02 через --list-hosts на всех плейбуках).
+  # Использовать вместе с --limit, чтобы play создания контейнера отсеялся:
+  #   ansible-playbook playbooks/pve-mihomo.yml \
+  #     -e pve_config_target=mihomo-new --limit mihomo-new
+  # По умолчанию поведение не меняется.
+  hosts: "{{ pve_config_target | default('mihomo') }}"
   gather_facts: true
   vars:
     ansible_become: false