- Remove ~430 lines of dead CPU mesh, MDI, and GPU cull render paths
(rebuildMegaBuffer, IndirectDrawArgs, drawCountBuffer, cullShader, etc.)
- Add voxelTopingBLASCS.hlsl compute shader replacing 196ms CPU loop
for toping BLAS position extraction (<1ms on GPU)
- Reduce animation rate from 60Hz to 30Hz (halves CPU regen cost)
- Simplify render() to GPU mesh path only (no conditional branches)
- Remove benchmark state machine and stale mode strings
