Update IDE and help

.vscode/tasks.json

@@ -6,7 +6,7 @@
         {
             "label": "Build RPi4 snapshot in toolbox",
             "type": "shell",
-            "command": "toolbox ${file} -p r4s -d",
+            "command": "toolbox run ${file} -p r4s -d",
             "problemMatcher": []
         }
     ]

openwrtbuilder

@@ -23,7 +23,7 @@ OPTIONS
     --ssh-upgrade HOST
         Example: root@192.168.1.1
     --ssh-backup SSH_PATH
-        Enabled by default for --ssh-upgrade
+        (For testing, enabled by default for --ssh-upgrade)
     --flash, -f DEVICE
         Example: /dev/sdX
     --debug, -d