nx_swgpu_showcase.nx

nx_swgpu_showcase.nx -- SHOW the sovereign software GPU (operator 2026-07-04: "show me where i can see this"). Renders a TURNTABLE of the SMOOTH-UNION SDF body (nx_sdfrender: one continuous raymarched surface, per-pixel lit), bakes each yaw frame to a PNG, base64s it, and emits a SELF-CONTAINED page (zero libs, our own JS cycles the frames = a rotating continuous 3D character). Proves: a continuous, per-pixel-lit 3D body rendered ENTIRELY by our own software GPU (no WebGL, no library), shown live. license_tier: ORIGINAL expect_exit: 0