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/deploy_home.yml

@@ -8,6 +8,8 @@
     - role: podman
 # SSL certificates are now handled automatically by Caddy
     # - role: ssl  # REMOVED - Caddy handles all certificate management
+    - role: ollama
+      tags: ollama
     - role: github-actions
     - role: graylog-config
       tags: graylog-config