[2026-06-02] 학습 파이프라인 진단 로그 보강

scripts/run_training_pipeline.ps1

@@ -41,13 +41,16 @@ function Invoke-PythonStep {
     }
 }
 
+try {
     Write-Log "training pipeline started"
+    Write-Log "python resolved: $Python"
 
     $HolidayCheck = & $Python scripts\_is_trading_day.py 2>&1
     if ($LASTEXITCODE -ne 0) {
         Write-Log "market closed - skipped ($HolidayCheck)"
         exit 0
     }
+    Write-Log "trading day check passed ($HolidayCheck)"
 
     Invoke-PythonStep -Name "collecting daily market features" -StepArgs @("scripts\collect_daily_features.py") -Required $false
 
@@ -60,3 +63,11 @@ Invoke-PythonStep -Name "building external training dataset" -StepArgs @("script
     Invoke-PythonStep -Name "training model" -StepArgs @("scripts\train_ai_model.py") -Required $true
 
     Write-Log "training pipeline finished"
+}
+catch {
+    Write-Log "training pipeline failed: $($_.Exception.Message)"
+    if ($_.ScriptStackTrace) {
+        Add-Content -Path $LogPath -Value $_.ScriptStackTrace -Encoding UTF8
+    }
+    throw
+}