Vendor the command set the menu and shell depend on

bin/blob-sudo-keepalive

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+# blob:summary=Prompt for sudo once and keep the credential alive in the background.
+# blob:requires-sudo=true
+
+sudo -v
+while true; do sudo -n true; sleep 60; done 2>/dev/null &
+SUDO_KEEPALIVE_PID=$!
+trap "kill $SUDO_KEEPALIVE_PID 2>/dev/null" EXIT