For the bread: Arrange baguette slices on a sheet tray and toast under the broiler until golden brown. Rub bread with cut-sides of raw garlic clove and drizzle with oil.
For the salad: Rinse lettuces and spin dry. Tear into bite-sized pieces. Place in a large bowl.
For the aioli: Add the yolks, saffron, garlic, lemon juice, a pinch each of salt and freshly ground black pepper, and garlic scapes to a large mixing bowl. With an immersion blender set to pulse, combine ingredients, then slowly drizzle in half of the oil. Switch to a whisk and whisk in the remaining oil in a slow, steady stream. Set aside.
For the seafood and assembly: In a large saute pan over medium-high heat, add the oil; when smoking, add the shrimp and squid. Saute until shrimp is pink and squid opaque, 2 to 3 minutes. Add the aioli, stir quickly then quickly remove from heat. Pour seafood over greens and toss lightly. Serve warm, garnished with red bell pepper, with the toasted baguette slices.