- Add backslash escaping before quote escaping in oneline() function

- Prevents incomplete string escaping vulnerability
- Resolves CodeQL alert: https://github.com/prompt-security/clawsec/security/code-scanning/16

skills/openclaw-audit-watchdog/scripts/setup_cron.mjs

@@ -52,6 +52,7 @@ function envOrEmpty(name) {
 function oneline(v) {
   return String(v ?? "")
     .replace(/[\r\n]+/g, " ")
+    .replace(/\\/g, "\\\\")
     .replace(/"/g, "\\\"")
     .trim();
 }