Wild Mushroom Ragout with Ziti

Name: Wild Mushroom Ragout with Ziti
Ingredients: 1/4 cup olive oil; 1 large onion ; finely diced; Salt ; and pepper; 2 pounds wild or cultivated mushrooms ; cleaned and sliced; 3 garlic cloves ; smashed to a paste with a little salt; 1 teaspoon finely chopped thyme; 2 teaspoons finely chopped sage; 1/2 teaspoon red pepper flakes; 2 tablespoons tomato paste; 1 tablespoon all-purpose flour; 2 cups Porcini Mushroom Broth ; (recipe follows), hot, or as needed; 1 pound long ziti; 2 tablespoons olive oil or butter; 2 garlic cloves; 2 tablespoons chopped parsley