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/inventories/home/hosts.yml

@@ -1,5 +1,5 @@
 ---
 all:
   hosts:
-    home.bdebyl.net:
+    home.debyl.io:
       ansible_user: fedora