Brabo’s soft-shell crab over corn, ramps, fiddleheads and bacon. Dish of the week: Soft-shell crab Asparagus. Tender, delicate lettuce. Overpriced ramps. All of these items are popping up in area markets, a signal that spring truly has sprung. But for me, the best way to usher in the glorious seasons of eating that lie ahead are those deliciously naked blue crabs: soft shells. Soft shells are blue crabs that have recently shed their shell…