diff --git a/SVSim.Database/Services/Inventory/InventoryTransaction.cs b/SVSim.Database/Services/Inventory/InventoryTransaction.cs
index cb82d66..2a99f75 100644
--- a/SVSim.Database/Services/Inventory/InventoryTransaction.cs
+++ b/SVSim.Database/Services/Inventory/InventoryTransaction.cs
@@ -296,6 +296,7 @@ internal sealed class InventoryTransaction : IInventoryTransaction
 
     private async Task PruneAcquireHistoryAsync(CancellationToken ct)
     {
+        // Two-phase: SQLite (used in tests) cannot translate Skip+OrderBy inside ExecuteDeleteAsync.
         var overflowIds = await _db.ViewerAcquireHistory
             .Where(h => h.ViewerId == Viewer.Id)
             .OrderByDescending(h => h.AcquireTime).ThenByDescending(h => h.Id)