White Bean and Tuna Salad with Shaved Squash

Name: White Bean and Tuna Salad with Shaved Squash
Ingredients: 1/2 cup plus 2 tablespoons extra-virgin olive oil; 1/4 cup fresh lemon juice (about 2 lemons); 1 large shallot, minced (about 3 tablespoons); 1 tablespoon fresh thyme leaves, plus more for garnish; 1 garlic clove, finely grated; 1 teaspoon kosher salt, divided; 3/4 teaspoon black pepper, divided; 1 (14-ounce) can cannellini beans, drained and rinsed; 1 (6.7-ounce) jar tuna in olive oil (preferably tuna ventresca), drained and separated into large flakes; 1 small zucchini, thinly shaved lengthwise (about 1 cup); 1 small yellow squash, thinly shaved lengthwise (about 2/3 cup); Dill sprigs, for garnish