Add D455 sensor host and shared Node/Core preparation surface

apps/node-agent/packaging/prerm

@@ -1,6 +1,11 @@
 #!/bin/sh
 set -eu
 if [ -d /run/systemd/system ]; then
+  mc_node_device_job=$(systemctl show --property=ActiveState --value mission-core-node-realsense-prepare.service 2>/dev/null || true)
+  case "$mc_node_device_job" in
+    active|activating) echo "Mission Core Node: дождитесь завершения подготовки устройства." >&2; exit 1 ;;
+  esac
+
   mc_node_environment_state=$(systemctl show --property=ActiveState --value mission-core-node-environment.service 2>/dev/null || true)
   case "$mc_node_environment_state" in
     active|activating)
@@ -29,6 +34,8 @@ case "$1" in
         /usr/sbin/sshd -t
         systemctl try-reload-or-restart ssh.service
       fi
+      systemctl stop mission-core-realsense.service
+      systemctl disable mission-core-realsense.service || true
       systemctl stop mission-core-node.service
       systemctl disable mission-core-node.service
     fi