Model card: add subtitle + shield badges (house style)

README.md

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 # Alpamayo 1 (R1) (FlashDrive)
 
-[GitHub](https://github.com/z-lab/flashdrive) | [Blog](https://z-lab.ai/projects/flashdrive/) | [Models](https://huggingface.co/collections/z-lab/flashdrive)
+**Flash Vision-Language-Action Inference for Autonomous Driving**
+
+![Paper](https://img.shields.io/badge/arXiv-coming%20soon-b31b1b.svg)
+[![GitHub](https://img.shields.io/badge/GitHub-FlashDrive-181717?logo=github)](https://github.com/z-lab/flashdrive)
+[![Blog](https://img.shields.io/badge/Blog-FlashDrive-blue)](https://z-lab.ai/projects/flashdrive/)
+[![Models](https://img.shields.io/badge/%F0%9F%A4%97-Models-yellow)](https://huggingface.co/collections/z-lab/flashdrive)
 
 [FlashDrive](https://github.com/z-lab/flashdrive) accelerates [Alpamayo 1 (R1)](https://huggingface.co/nvidia/Alpamayo-R1-10B) — one of NVIDIA's 10B-parameter vision-language-action models for autonomous driving — by **3.9× with no loss in accuracy**, through streaming inference, [DFlash](https://github.com/z-lab/dflash) speculative reasoning, [ParoQuant](https://github.com/z-lab/paroquant) W4A8 quantization, adaptive action caching, and `torch.compile`.