Three enemies orbit in world space. Each has a separate nameplate entity
tracked via ScreenFollow (it projects the enemy's world
position through the camera and writes the screen coord to the nameplate's
Transform each frame). A React <UIRoot> with
positioning: "transform" renders the namecard there, and an
always-open <Tooltip> shows the enemy's stats —
portaled into the scene's screen-space overlay yet staying glued to the
moving namecard.