Initialize legacy kernels compatibility mirror

README.md

@@ -1,32 +1,9 @@
-# flashrt-flex-attention-train
+# flashrt/flashrt-flex-attention-train
 
-FlexAttention replacement training package for PI-style dual-expert
-transformers.
+This repository is a compatibility mirror for older `kernels` clients
+that resolve repositories through the default Hugging Face model repo API.
 
-Hub repo: `flashrt/flashrt-flex-attention-train`
+Canonical Kernel Hub repo: https://huggingface.co/kernels/flashrt/flashrt-flex-attention-train
 
-## Public API
-
-- `flex_attention`
-- `flex_attention_forward`
-- `reference_flex_attention`
-- `build_block_sparse_bool_masks`
-- `backend_marker`
-
-## Scope
-
-This package locks the public Tensor API and correctness harness for a native
-replacement of the PI052 FlexAttention/SDPA attention path:
-
-- prefix self-attention rows
-- action-to-prefix rows plus block-diagonal action rows
-- `head_dim=256`
-- BF16 forward/backward through PyTorch autograd fallback
-- detached-prefix semantics for action rows reading prefix K/V
-- prefix mask, prefix padding mask, action block mask, and action padding mask
-- automatic SDPA fallback for unsupported shapes
-
-The current implementation is the SDPA-backed training reference. It is meant
-to be the stable integration target for native CUDA fwd/bwd kernels; no native
-performance claim is made until the benchmark gates in `VALIDATION.md` pass on
-both A100 and RTX 5090.
+Do not edit this mirror by hand. It is generated from the Kernel Hub
+`vN` branches and contains the same `build/**` artifacts.