Ponzu Salmon and Avocado Toast

Name: Ponzu Salmon and Avocado Toast
Ingredients: ⅓ cup mayonnaise; 2 Tbsp. sriracha; 2 Tbsp. soy sauce; 1 Tbsp. fresh lime juice; 1 Tbsp. fresh lemon juice, plus more; 3 Persian cucumbers, coarsely chopped; 1 avocado, coarsely chopped; 1 Tbsp. finely chopped pickled ginger; Kosher salt; 4 oz. smoked salmon, torn into bite-size pieces; 4 slices country-style bread, lightly toasted; Toasted sesame seeds and seasoned toasted seaweed snacks (for serving)