sota-check

One repeatable pass that stops fak from re-inventing known kernel art — before writing or optimizing a compute kernel (a quantized GEMM, a fused attention, a KV-cache reuse, a MoE dispatch, a Metal/CUDA kernel), it checks the SOTA prior-art matrix for the production reference (llama.cpp / Marlin / CUTLASS / FlashInfer / vLLM / SGLang / a named paper), decides the route (borrow / bind / stay-minimal), holds the…