diff --git a/src/KArtSell.Host/Jobs/ShadowRunJob.cs b/src/KArtSell.Host/Jobs/ShadowRunJob.cs
index 08564d87..5db7dc4a 100644
--- a/src/KArtSell.Host/Jobs/ShadowRunJob.cs
+++ b/src/KArtSell.Host/Jobs/ShadowRunJob.cs
@@ -76,7 +76,7 @@ public sealed class ShadowRunJob(
             "Shadow run {RunId} phase 4 (phase segmentation) complete");
 
     [Queue("q-evaluation")]
-    [DisableConcurrentExecution(timeoutInSeconds: 1800)]  // 30 min for bulk historical (252+ days)
+    // [DisableConcurrentExecution(timeoutInSeconds: 1800)]  // REMOVED: Allows internal parallel operations (Parallel.ForEachAsync)
     [AutomaticRetry(Attempts = MaxAttempts, OnAttemptsExceeded = AttemptsExceededAction.Fail)]
     public async Task ExecuteAsync(ShadowRunCommand command, CancellationToken cancellationToken = default)
     {