- fmha_6warp_multihead.cuh: grid=(1, n_h, batch) kernel with FmhaParams - MQA support via k_head_stride=0 / v_head_stride=0 - LSE output for multi-segment KV merge composition - test_fmha_6warp_multihead.cu: MHA (4+8 heads), MQA, batched tests - HD-specific wrappers for hd=16/64/128/256 - Marked E2M1 dequant bug as FIXED in consultant issue file