NVFP4: MoE experts and ModelOpt exports on finegrained-kernels
- NVFP4 linears and experts run on kernels-community/finegrained-kernels.
- Experts get their own grouped and batched implementations.
- A config reader turns a ModelOpt export into an NVFP4Config.
- FP8 layers of a ModelOpt mixed-precision export load dequantized.
- NVFP4Config gains activation_format and dequantize.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>