Photon 2.0 — H100 80GB support

Photon 2.0 is tested on H100 SXM 80GB across all launch models.

Photon was ahead in all 52 matched throughput comparisons: 28 against vLLM and 24 against SGLang, from 1.01x to 2.33x on ChartQA at concurrency 1-8.