Add Kavita as the new book server

Runs next to Calibre-Web at a temporary kavita. subdomain until it takes
over books. Each book lives in its own folder under
/opt/stacks/kavita/books, because Kavita names a book after its folder.
The admin password is in the vault as vault_kavita.

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

roles/docker/tasks/media/kavita.yml

@@ -0,0 +1,23 @@
+- name: make kavita directories
+  ansible.builtin.file:
+    path: "{{ item }}"
+    state: directory
+    owner: phil
+    group: phil
+  loop:
+    - /opt/stacks/kavita
+    - /opt/stacks/kavita/config
+    - /opt/stacks/kavita/books
+
+- name: Template out the compose file
+  ansible.builtin.template:
+    src: kavita-compose.yml.j2
+    dest: /opt/stacks/kavita/compose.yml
+    owner: root
+    mode: '0644'
+
+- name: deploy kavita stack
+  community.docker.docker_compose_v2:
+    project_src: /opt/stacks/kavita
+    files:
+    - compose.yml