Fix SearXNG headers

roles/apps/templates/caddy/Caddyfile.j2

@@ -1,6 +1,7 @@
 {# code: language=ansible-jinja #}
 # THIS FILE IS MANAGED BY ANSIBLE
 
+{% if 'searxng' in apps_include %}
 {{ apps_vars.searxng.domain }} {
     tls {{ tls_email }}
 
@@ -32,8 +33,7 @@
     }
 
     header {
-        Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
-        X-XSS-Protection "1; mode=block"
+        Strict-Transport-Security "max-age=31536000; includeSubDomains"
         X-Content-Type-Options "nosniff"
         Permissions-Policy "accelerometer=(),ambient-light-sensor=(),autoplay=(),camera=(),encrypted-media=(),focus-without-user-activation=(),geolocation=(),gyroscope=(),magnetometer=(),microphone=(),midi=(),payment=(),picture-in-picture=(),speaker=(),sync-xhr=(),usb=(),vr=(),interest-cohort=()"
         Referrer-Policy "no-referrer"
@@ -70,6 +70,8 @@
         reverse_proxy searxng:8080 {
             header_up X-Forwarded-Port {http.request.port}
             header_up X-Forwarded-Proto {http.request.scheme}
+            header_up X-Real-IP {remote_host}
         }
     }
 }
+{% endif %}