- Add gqa_decode_attn/gqa_prefill_attn dispatch functions - Internal _available/__modules with underscore prefix - CUDA kernel path with F.scaled_dot_product_attention fallback - GQA head expansion in fallback path
- Add gqa_decode_attn/gqa_prefill_attn dispatch functions - Internal _available/__modules with underscore prefix - CUDA kernel path with F.scaled_dot_product_attention fallback - GQA head expansion in fallback path