Added prefetch

furumi-common/proto/virtualfs.proto

@@ -39,9 +39,13 @@ message SnapshotRequest {
 }
 
 // One directory's contents within a snapshot response.
+// child_attrs is parallel to children: child_attrs[i] is the AttrResponse for children[i].
+// dir_attr is the AttrResponse for the directory itself (path).
 message SnapshotEntry {
   string path = 1;
   repeated DirEntry children = 2;
+  repeated AttrResponse child_attrs = 3;
+  AttrResponse dir_attr = 4;
 }
 
 // Subscribe to live filesystem change notifications (no parameters needed).