For the dressing:
1 tablespoon plus 1 teaspoon rice vinegar
1 tablespoon freshly squeezed lime juice
2 teaspoons fish sauce
1 1/2 teaspoons chile-garlic paste
1 teaspoon granulated sugar
1/2 teaspoon kosher salt
1/4 cup vegetable oil

For the salad:
1 pound sugar snap peas, strings removed, stem ends trimmed, and cut on the bias into 1/2-inch pieces
1/2 medium English cucumber, halved lengthwise, then thinly sliced crosswise
2 medium carrots, peeled, halved lengthwise, and thinly sliced crosswise
3/4 cup coarsely chopped fresh cilantro (from about 1/2 bunch)
2 medium scallions, thinly sliced (white and light green parts only)
1/3 cup roasted, salted peanuts, coarsely chopped