Add GPU benchmark results for InsightFace and SigLIP
RTX 2070 SUPER results on CUDA 12.8.1:
- InsightFace: 12.8 ms / 78 img/s (8× CPU)
- SigLIP batch 32: 5.4 ms/img / 187 img/s (33× CPU)
Also fix the nvidia-smi verify command to use CUDA 12.8.1 image.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>