Add queued FFmpeg conversion and finish splitting the window from the host.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/Explorer.Application/BrowseService.cs

@@ -11,7 +11,7 @@ public sealed class BrowseService
     private readonly IVolumeService _volumes;
     private readonly IIndexStore _store;
     private readonly SourceManager _sources;
-    private readonly StorageProviderRegistry _providers;
+    private readonly ICloudOverlay _providers;
     private readonly CloudPlaceStore _cloudPlaces;
     private readonly UiPreferencesStore _preferences;
     private readonly IElevatedScanService? _elevation;
@@ -22,7 +22,7 @@ public sealed class BrowseService
         IVolumeService volumes,
         IIndexStore store,
         SourceManager sources,
-        StorageProviderRegistry providers,
+        ICloudOverlay providers,
         CloudPlaceStore cloudPlaces,
         UiPreferencesStore preferences,
         IElevatedScanService? elevation = null,
@@ -375,7 +375,7 @@ public sealed class BrowseService
             yield return new BrowseDelta { Path = path, Updated = accessUpdates };
         }
 
-        var constrained = _providers.Find(path) is not null;
+        var constrained = _providers.FindProviderId(path) is not null;
         if (constrained)
         {
             await foreach (var enriched in EnrichInBatchesAsync(all, byPath, viewport, source?.Kind, constrained: true, cancellationToken)