Chickpea Lentil & Sun-Dried Tomato Sumac Salad

Name: Chickpea Lentil & Sun-Dried Tomato Sumac Salad
Cuisine: Asian
Ingredients: ¾ cup dried green, brown, or French green lentils; 1 bay leaf; 1 (15-ounce) can chickpeas, drained, and rinsed; 2 teaspoons olive oil (optional); 1 tablespoon tamari; 1 teaspoon sumac; 1 teaspoon dried thyme; ½ cup sun-dried tomatoes (packed in oil), chopped; ¼ cup capers (optional); 4 to 5 cups arugula; ¼ cup extra-virgin olive oil; 2 tablespoons balsamic vinegar; 1 tablespoon toasted sesame oil; 1 tablespoon tamari; 2 teaspoons maple syrup, or to taste; ½ teaspoon lemon zest; ½ teaspoon sumac; Fresh lemon juice to taste