2 ounces dried bean thread noodles (cellophane noodles)
1 small carrot, cut into thin matchsticks (about 3/4 cup)
1 Kirby cucumber, halved lengthwise, seeded, and cut into thin matchsticks (about 3/4 cup)
1 small fresh jalapeño, cut into thin matchsticks
1/4 cup rice vinegar (not seasoned)
1/4 teaspoon sugar
1 tablespoon plus 3/4 teaspoon fresh lime juice, divided
16 rice-paper rounds (also called galettes de riz; about 8 inches in diameter) plus additional in case some tear
4 romaine leaves, each torn into 4 pieces
10 ounces packaged baked tofu, cut into 3- by 1/3-inch sticks
1 cup fresh bean sprouts
1/2 cup each of torn basil, mint, and cilantro leaves (11/2 cups total)
1/3 cup hoisin sauce
2 tablespoons chunky peanut butter
2 tablespoons water