feat: add ollama and searxng, migrate to debyl.io hostname

- Add ollama role for local LLM inference (install, service, models)
- Add searxng container for private search
- Migrate hostname from home.bdebyl.net to home.debyl.io
  (inventory, awsddns, zomboid entrypoint, home_server_name)
- Update vault with new secrets

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

ansible/roles/ollama/tasks/models.yml

@@ -0,0 +1,10 @@
+---
+- name: pull ollama models
+  become: true
+  ansible.builtin.command: ollama pull {{ item }}
+  loop: "{{ ollama_models }}"
+  register: result
+  retries: 3
+  delay: 10
+  until: result is not failed
+  changed_when: "'pulling' in result.stderr or 'pulling' in result.stdout"