Toasted Saffron Pasta Primavera

Name: Toasted Saffron Pasta Primavera
Ingredients: 2 tablespoons olive oil; 12 ounces spaghetti, broken in half; 2 cloves garlic, finely chopped; ¼ teaspoon saffron threads or paprika; 1 cup dry white wine; 2 ¾ teaspoons kosher salt, divided; 2 small yellow squash, shaved lengthwise into ribbons (about 2 cups); 2 cups cherry tomatoes (about 12 oz.), halved; 3 tablespoons unsalted butter, cut into ½-in. pieces; ½ teaspoon lemon zest plus 2 tsp. fresh juice (from 1 lemon); ½ teaspoon freshly ground black pepper; 1 cup packed fresh basil leaves