In a food processor, combine the peanut butter with 1 teaspoon of chili-garlic sauce. With the machine on, slowly add the 1/3 cup of reserved noodle cooking water. Pour in the reserved marinade, season with salt and process until combined. Pour the peanut sauce over the noodles and toss well. Transfer the noodles to bowls, top with the tofu and serve with lime wedges, peanuts and chili-garlic sauce.