In the decade since antifolk’s heyday on the Lower East Side, Cluck has built a sizable body of work while continuing to fly under the mainstream radar. But she hasn’t gone unnoticed. Her fan base, cultlike in size and devotion, includes CocoRosie and Laura Marling, thanks largely to her bell-clear and hotly austere voice. Tonight she pairs with quirky-folk mainstay Jeffrey Lewis, who can go from poignance to comedy and back in three seconds.