Cut over the window to Explorer.Host.exe so only the host writes the index.

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

tests/Explorer.FileOperations.Tests/OperationProfileServiceTests.cs

@@ -107,10 +107,12 @@ public class OperationProfileServiceTests
             var ops = new FileOperationService(queue, shell, enumerator);
             var git = new StubGit();
             var planner = new FileOperationProfilePlanner(new RenamePlanner());
-            var renames = new RenameBatchService(new RenamePlanner(), store, ops);
+            var mutations = new LocalIndexMutations(store);
+            var renames = new RenameBatchService(new RenamePlanner(), store, mutations, ops);
             var profiles = new OperationProfileService(
                 planner,
                 store,
+                mutations,
                 ops,
                 renames,
                 volumes,