feat(node): ship managed environment startup and USB recovery

apps/node-agent/packaging/prerm

@@ -13,10 +13,22 @@ if [ -d /run/systemd/system ]; then
       exit 1
     fi
   fi
+  mc_node_usb_job=$(systemctl show --property=ActiveState --value mission-core-node-usb-startup.service 2>/dev/null || true)
+  case "$mc_node_usb_job" in
+    activating|deactivating) echo "Mission Core Node: дождитесь завершения обнаружения USB при загрузке." >&2; exit 1 ;;
+  esac
+  if [ -f /run/mission-core-usb-startup/pending.json ]; then
+    echo "Mission Core Node: восстановление USB ещё не завершило включение порта; пакет сохранён." >&2
+    exit 1
+  fi
   mc_node_x4_job=$(systemctl show --property=ActiveState --value mission-core-node-insta360-x4-profile.service 2>/dev/null || true)
   case "$mc_node_x4_job" in
     active|activating) echo "Mission Core Node: дождитесь завершения подготовки X4." >&2; exit 1 ;;
   esac
+  mc_node_vesc_job=$(systemctl show --property=ActiveState --value mission-core-node-vesc-prepare.service 2>/dev/null || true)
+  case "$mc_node_vesc_job" in
+    active|activating) echo "Mission Core Node: дождитесь завершения подготовки VESC." >&2; exit 1 ;;
+  esac
   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 ;;
@@ -30,8 +42,39 @@ if [ -d /run/systemd/system ]; then
       ;;
   esac
 fi
+retire_startup_settings() {
+    for mc_node_owned in /etc/xdg/autostart/org.nodedc.MissionCoreNode.desktop /etc/mission-core-node/usb-startup.json; do
+      case "$mc_node_owned" in
+        *.desktop) mc_node_template=/usr/share/mission-core-node/mission-core-node-autostart.desktop ;;
+        *.json) mc_node_template=/usr/share/mission-core-node/usb-startup.json ;;
+      esac
+      if [ ! -L "$mc_node_owned" ] && cmp -s "$mc_node_template" "$mc_node_owned"; then
+        rm "$mc_node_owned"
+      fi
+    done
+    if [ -d /run/systemd/system ]; then
+      systemctl disable --now mission-core-node-usb-startup.service
+    fi
+}
+# A downgrade removes helpers introduced in 0.8.37. Retire their owned
+# configuration first; do not leave an enabled unit or XDG entry dangling.
+if [ "$1" = upgrade ] && [ -n "${2:-}" ] && dpkg --compare-versions "$2" lt 0.8.37-1; then
+  retire_startup_settings
+fi
+case "$1" in
+  upgrade|remove|deconfigure)
+    if [ -d /run/systemd/system ] && [ -f /usr/lib/systemd/system/mission-core-vesc.service ]; then
+      systemctl disable --now mission-core-vesc.service
+    fi
+    ;;
+esac
 case "$1" in
   remove|deconfigure)
+    if cmp -s /usr/share/mission-core-node/profiles/vesc/70-mission-core-vesc.rules /etc/udev/rules.d/70-mission-core-vesc.rules; then
+      rm /etc/udev/rules.d/70-mission-core-vesc.rules
+      if [ -d /run/systemd/system ]; then udevadm control --reload-rules; fi
+    fi
+    retire_startup_settings
     mc_node_ssh_snippet=/etc/ssh/sshd_config.d/60-mission-core-node.conf
     if [ -e "$mc_node_ssh_snippet" ]; then
       if cmp -s /usr/share/mission-core-node/60-mission-core-node.conf "$mc_node_ssh_snippet"; then