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/podman/templates/searxng/settings.yml.j2

@@ -0,0 +1,35 @@
+use_default_settings: true
+
+general:
+  instance_name: "SearXNG"
+  debug: false
+
+server:
+  bind_address: "127.0.0.1"
+  port: 8080
+  secret_key: "{{ searxng_secret_key }}"
+  limiter: false
+  image_proxy: false
+
+search:
+  safe_search: 0
+  formats:
+    - html
+    - json
+
+engines:
+  - name: duckduckgo
+    engine: duckduckgo
+    disabled: false
+
+  - name: google
+    engine: google
+    disabled: false
+
+  - name: wikipedia
+    engine: wikipedia
+    disabled: false
+
+  - name: bing
+    engine: bing
+    disabled: false