multica_agent_host: install the 1Password CLI from 1Password's signed repo (WDWL-37)

Agents get `op` so op:// references resolve at command time and secret
values stay out of prompts and transcripts. Installed per 1Password's
apt instructions (signed-by keyring, debsig policy + keyring,
1password-cli), with the key fingerprint-checked before it is trusted;
EL via their yum repo. multica_op_version pins, "" tracks the repo.
Tag: multica_op.

Optional, default-off hook writes OP_SERVICE_ACCOUNT_TOKEN from the
playbook (ansible-vault) to a 0600 file owned by the daemon user. It is
deliberately not wired into the daemon environment: the user unit
belongs to the multica CLI, and the delivery design is pending.

Rolled out with --tags multica_op to haunted-mansion and spaceship-earth;
second run changed=0, op 2.41.1 as multica, debsig verifies the .deb.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ansible/roles/multica_agent_host/tasks/op_token.yml

@@ -0,0 +1,37 @@
+---
+# Delivers the 1Password service account token to a file only the daemon user
+# can read. It deliberately stops there: nothing here puts the token into the
+# daemon's environment. The daemon's systemd user unit belongs to the multica
+# CLI, so the role must not edit it, and exporting the token to the daemon
+# would hand it to every agent process too. See the README.
+
+# no_log: a failed assert would otherwise render the token it inspected.
+- name: 1Password token | Require a service account token
+  ansible.builtin.assert:
+    that:
+      - multica_op_service_account_token | length > 0
+      - multica_op_service_account_token is match('^ops_')
+    fail_msg: >-
+      multica_op_deliver_token is true but multica_op_service_account_token is
+      not a 1Password service account token (ops_...).
+    quiet: true
+  no_log: true
+
+- name: 1Password token | Create the token directory
+  ansible.builtin.file:
+    path: "{{ multica_op_token_file | dirname }}"
+    state: directory
+    owner: "{{ multica_user }}"
+    group: "{{ multica_group }}"
+    mode: "0700"
+  become: true
+
+- name: 1Password token | Write the token file
+  ansible.builtin.copy:
+    dest: "{{ multica_op_token_file }}"
+    content: "{{ multica_op_service_account_token }}\n"
+    owner: "{{ multica_user }}"
+    group: "{{ multica_group }}"
+    mode: "0600"
+  no_log: true
+  become: true