Tinkerboard 2S case with organic top

I got the idea for this, after seeing @yaniv_193818's great case for the Tinkerboard S. With the heat sink, I couldn't do the sliding top, and also I got the idea to make this organic-looking shape.

Prints well with PLA, .20 speed or quality settings in PrusaSlicer. Supports needed for the lid/top, due to all that's going on. Snug style supports work well and come off cleanly with a few minutes patience: I start at the center cutout and gently pry. After a few minutes of slow work, the supports pop off in one piece.

The case will snap together when the top is on the “correct” way - so the hole is where the heat sink would be.  If you try to add the top when the heat sink is missing and the hole is 180 degrees off, the snap notches might not properly line up, due to hiding the notch supports under the mesh.