refactor(alloy): remove athena syslog listener in favor of docker logs

ansible/alloy/puck/config.alloy.j2

@@ -91,19 +91,11 @@ loki.source.syslog "angelia_logs" {
   forward_to = [loki.write.default.receiver]
 }
 
-loki.source.syslog "athena_logs" {
-  listener {
-    address  = "127.0.0.1:{{athena_syslog_port}}"
-    protocol = "tcp"
-    syslog_format = "{{ syslog_format }}"
-    labels = {
-      job = "athena",
-      hostname = "{{inventory_hostname}}",
-      environment = "{{deployment_environment}}",
-    }
-  }
-  forward_to = [loki.write.default.receiver]
-}
+// Athena used to ship via syslog on {{athena_syslog_port}}; it logs to
+// container stdout and is now picked up by the docker-socket block below
+// (service="athena", component=app/mcp/nginx). The host_var is retained as a
+// reserved port number but no listener binds to it — remove the var from the
+// inventory when the rollout is verified.
 
 loki.source.syslog "kairos_logs" {
   listener {