test: fix windows parallels agent quoting

scripts/e2e/parallels-windows-smoke.sh

@@ -333,32 +333,22 @@ guest_run_openclaw() {
   local env_value="${2:-}"
   shift 2
 
-  local args_literal stdout_name stderr_name env_name_q env_value_q
+  local args_literal env_name_q env_value_q
   args_literal="$(ps_array_literal "$@")"
-  stdout_name="openclaw-stdout-$RANDOM-$RANDOM.log"
-  stderr_name="openclaw-stderr-$RANDOM-$RANDOM.log"
   env_name_q="$(ps_single_quote "$env_name")"
   env_value_q="$(ps_single_quote "$env_value")"
 
   guest_powershell "$(cat <<EOF
-\$stdout = Join-Path \$env:TEMP '$stdout_name'
-\$stderr = Join-Path \$env:TEMP '$stderr_name'
-try {
-  if ('${env_name_q}' -ne '') {
-    Set-Item -Path ('Env:' + '${env_name_q}') -Value '${env_value_q}'
-  }
-  \$proc = Start-Process -FilePath (Join-Path \$env:APPDATA 'npm\openclaw.cmd') -ArgumentList $args_literal -NoNewWindow -PassThru -RedirectStandardOutput \$stdout -RedirectStandardError \$stderr
-  \$proc.WaitForExit()
-  if (Test-Path \$stdout) {
-    Get-Content \$stdout
-  }
-  if (Test-Path \$stderr) {
-    Get-Content \$stderr
-  }
-  exit \$proc.ExitCode
-} finally {
-  Remove-Item \$stdout, \$stderr -Force -ErrorAction SilentlyContinue
+\$openclaw = Join-Path \$env:APPDATA 'npm\openclaw.cmd'
+\$args = $args_literal
+if ('${env_name_q}' -ne '') {
+  Set-Item -Path ('Env:' + '${env_name_q}') -Value '${env_value_q}'
 }
+\$output = & \$openclaw @args 2>&1
+if (\$null -ne \$output) {
+  \$output | ForEach-Object { \$_ }
+}
+exit \$LASTEXITCODE
 EOF
 )"
 }