macOS: stabilize FUSE-T SMB auxiliary mounts

Add statfs metadata for the auxiliary FUSE mount, keep /control read-only by sending hdiutil device data through /aux-device-info and tolerate delayed SMB rediscovery during mount completion. Log final control-file retry failures for diagnostics.

src/Driver/Fuse/FuseService.h

@@ -45,6 +45,7 @@ namespace VeraCrypt
 		static bool CheckAccessRights ();
 		static void Dismount ();
 		static int ExceptionToErrorCode ();
+		static const char *GetAuxDeviceInfoPath () { return "/aux-device-info"; }
 		static const char *GetControlPath () { return "/control"; }
 		static const char *GetVolumeImagePath ();
 		static string GetDeviceType () { return "veracrypt"; }