Mussels With Chorizo and Tomatoes on Toast

Name: Mussels With Chorizo and Tomatoes on Toast
Ingredients: ½ cup extra-virgin olive oil, divided; 1½ oz. dried cured Spanish chorizo, thinly sliced into coins; 1 medium onion, chopped; 1 medium fennel bulb, chopped; 6 garlic cloves, smashed, divided; 1 pint cherry tomatoes, preferably Sun Gold; ¼ tsp. crushed red pepper flakes; 1 tsp. kosher salt, divided; 1 cup dry white wine; 2 lb. mussels, soaked, scrubbed, beards removed; 1 (15.5-oz.) can cannellini beans, rinsed, drained; 1½ cups chopped cilantro leaves with tender stems; 2 lemons, divided; 4 (1-thick) slices sourdough or country-style bread