Add storage_box playbook and fix HCLOUD_TOKEN extraction

- Add storage_box role: generates SSH key pair, creates Hetzner Storage
  Box with known password, installs public key via install-ssh-key,
  writes storagebox.yml to stack config. Idempotent: skips key install
  if SSH key auth already works.
- Add deploy.yml: one-shot playbook chaining provision → dns →
  storage_box → bootstrap → site for fresh deployments
- Fix .envrc HCLOUD_TOKEN extraction stripping surrounding quotes from
  vault YAML values
- Add restic_storagebox_password to vault template and setup.sh prompt
- Add sshpass to README prerequisites

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

roles/storage_box/defaults/main.yml

@@ -0,0 +1,20 @@
+---
+# Storage box name used to identify (or create) the box
+restic_storagebox_name: "{{ server_name }}-backup"
+
+# Set these only when creating a new storage box from scratch.
+# Leave unset if the box already exists (identified by restic_storagebox_name above).
+# restic_storagebox_type: bx11
+# restic_storagebox_location: fsn1
+
+# SSH port for Hetzner Storage Boxes
+restic_ssh_port: 23
+
+# Path where the private key is stored on the Ansible controller (per-stack)
+restic_local_key_path: "{{ lookup('env', 'LINDERHOF_DIR') }}/restic_backup"
+
+# Path on the target server where the private key will be deployed
+restic_ssh_key: /root/.ssh/restic_backup
+
+# Remote path on the storage box for this server's backups
+restic_remote_path: "backups/{{ server_name }}"

roles/storage_box/tasks/main.yml

@@ -0,0 +1,86 @@
+---
+- name: Generate restic SSH key pair
+  ansible.builtin.command:
+    cmd: >-
+      ssh-keygen -t ed25519
+      -f {{ restic_local_key_path }}
+      -N ""
+      -C "restic-{{ server_name }}"
+    creates: "{{ restic_local_key_path }}"
+  check_mode: false
+
+- name: Check if SSH public key exists
+  ansible.builtin.stat:
+    path: "{{ restic_local_key_path }}.pub"
+  register: ssh_pub_key_stat
+
+- name: Read SSH public key
+  ansible.builtin.slurp:
+    src: "{{ restic_local_key_path }}.pub"
+  register: ssh_pub_key_raw
+  when: ssh_pub_key_stat.stat.exists
+
+- name: Set public key fact
+  ansible.builtin.set_fact:
+    restic_ssh_pub_key: "{{ ssh_pub_key_raw.content | b64decode | trim }}"
+  when: ssh_pub_key_stat.stat.exists
+
+- name: Configure Hetzner Storage Box
+  hetzner.hcloud.storage_box:
+    name: "{{ restic_storagebox_name }}"
+    storage_box_type: "{{ restic_storagebox_type | default(omit) }}"
+    location: "{{ restic_storagebox_location | default(omit) }}"
+    password: "{{ restic_storagebox_password }}"
+    api_token: "{{ hcloud_token }}"
+    access_settings:
+      ssh_enabled: true
+    state: present
+  register: storagebox_result
+  when: ssh_pub_key_stat.stat.exists
+
+- name: Check SSH key auth on Storage Box
+  ansible.builtin.shell: |
+    echo "bye" | sftp -i {{ restic_local_key_path }} \
+    -o BatchMode=yes -o StrictHostKeyChecking=no \
+    -P 23 \
+    {{ storagebox_result.hcloud_storage_box.username }}@{{ storagebox_result.hcloud_storage_box.server }}
+  register: ssh_key_check
+  failed_when: false
+  changed_when: false
+  when: ssh_pub_key_stat.stat.exists
+
+- name: Install SSH public key on Storage Box
+  ansible.builtin.shell: |
+    cat {{ restic_local_key_path }}.pub | \
+    sshpass -p "{{ restic_storagebox_password }}" \
+    ssh -o StrictHostKeyChecking=no -p 23 \
+    {{ storagebox_result.hcloud_storage_box.username }}@{{ storagebox_result.hcloud_storage_box.server }} \
+    install-ssh-key
+  no_log: true
+  when: ssh_pub_key_stat.stat.exists and ssh_key_check.rc != 0
+
+- name: Write storagebox.yml to stack config directory
+  ansible.builtin.copy:
+    content: |
+      ---
+      # Storage box config — written automatically by storage_box.yml, do not edit manually
+      restic_user: {{ storagebox_result.hcloud_storage_box.username }}
+      restic_host: {{ storagebox_result.hcloud_storage_box.server }}
+      restic_ssh_port: {{ restic_ssh_port }}
+      restic_remote_path: {{ restic_remote_path }}
+      restic_ssh_key: {{ restic_ssh_key }}
+      restic_local_key_path: {{ restic_local_key_path }}
+    dest: "{{ lookup('env', 'ANSIBLE_INVENTORY') | dirname }}/group_vars/all/storagebox.yml"
+    mode: "0600"
+  when: ssh_pub_key_stat.stat.exists
+
+- name: Print connection info
+  ansible.builtin.debug:
+    msg:
+      - "Storage box configured successfully"
+      - "User: {{ storagebox_result.hcloud_storage_box.username }}"
+      - "Host: {{ storagebox_result.hcloud_storage_box.server }}"
+      - "Remote path: {{ restic_remote_path }}"
+      - "Local key: {{ restic_local_key_path }}"
+      - "Next: set enable_restic: true and run site.yml or restic.yml"
+  when: ssh_pub_key_stat.stat.exists