Added max list size circumvention for file transfers between sites.

SharepointToolbox/Services/VersionCleanupService.cs

@@ -117,6 +117,7 @@ public class VersionCleanupService : IVersionCleanupService
         IProgress<OperationProgress> progress,
         CancellationToken ct)
     {
+        int before = 0;
         try
         {
             var file = ctx.Web.GetFileByServerRelativeUrl(fileServerRelativeUrl);
@@ -131,7 +132,7 @@ public class VersionCleanupService : IVersionCleanupService
             // file.Versions contains only HISTORICAL versions; the current published
             // version lives on `file` itself and is never deletable here.
             var versions = file.Versions.ToList();
-            int before = versions.Count;
+            before = versions.Count;
             if (before == 0) return null;
 
             // Sort by Created ascending so [0] is the oldest historical version.
@@ -173,6 +174,7 @@ public class VersionCleanupService : IVersionCleanupService
                 BytesFreed = bytesFreed,
             };
         }
+        catch (OperationCanceledException) { throw; }
         catch (Exception ex)
         {
             _logger.LogWarning(ex, "Failed to trim versions for {File}", fileServerRelativeUrl);
@@ -182,6 +184,7 @@ public class VersionCleanupService : IVersionCleanupService
                 Library = libraryTitle,
                 FileServerRelativeUrl = fileServerRelativeUrl,
                 FileName = System.IO.Path.GetFileName(fileServerRelativeUrl),
+                VersionsBefore = before,
                 Error = ex.Message,
             };
         }