공개 런타임 프로브 복구 수정

scripts/boot-public-runtime.ps1

@@ -240,8 +240,15 @@ function Test-VoiceSidecarStack {
     "--tts-language", "KR",
     "--timeout-seconds", "5"
   )
-  & $Python @probeArgs 1>$null 2>$null
-  return $LASTEXITCODE -eq 0
+  $previousErrorActionPreference = $ErrorActionPreference
+  try {
+    $ErrorActionPreference = "Continue"
+    & $Python @probeArgs 1>$null 2>$null
+    $probeExit = $LASTEXITCODE
+  } finally {
+    $ErrorActionPreference = $previousErrorActionPreference
+  }
+  return $probeExit -eq 0
 }
 
 Write-BootLog "================ boot start ================"