재부팅 복구와 학습자 패널을 정리

scripts/boot-public-runtime.ps1

@@ -327,10 +327,15 @@ if ((Test-ApiControlPlaneHealthy) -and (Test-EngineHealthy) -and (Test-VoiceApiH
     Write-BootLog "web preview down on 127.0.0.1:$WebPort; including web in restart"
   }
   Write-BootLog ("running start-public-runtime.ps1 " + ($startArgs -join " "))
-  $out = & powershell.exe -NoProfile -ExecutionPolicy Bypass -File $startScript @startArgs 2>&1
-  $out | ForEach-Object { Write-BootLog ("  pub> " + $_) }
-  if ($LASTEXITCODE -ne 0) {
-    Write-BootLog "ERROR: start-public-runtime.ps1 exit $LASTEXITCODE"
+  $startFailed = $false
+  try {
+    & $startScript @startArgs |
+      ForEach-Object { Write-BootLog ("  pub> " + $_) }
+  } catch {
+    $startFailed = $true
+    Write-BootLog "ERROR: start-public-runtime.ps1 failed: $($_.Exception.Message)"
+  }
+  if ($startFailed) {
     exit 1
   }
 }