Show folder names immediately and refresh stale index sizes without walking the whole drive.

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

tests/Explorer.Analysis.Tests/AnalysisTests.cs

@@ -128,6 +128,7 @@ public class AnalysisTests
             store,
             new HydrationGuard(new StorageProviderRegistry([], NullLogger<StorageProviderRegistry>.Instance)),
             NullLogger<DuplicateHashWorker>.Instance);
+        worker.Resume();
         await worker.ProcessPendingAsync(CancellationToken.None);
 
         var skipped = await store.Entries.GetByPathAsync(source.Id, "online-only.bin");