LC Runtime v1.0.0-alpha

First tagged release. ABI 1.2 (lc_set_kernel + HotField). C99 public API, bit-exact across Zen 2 / Zen 4. Apache 2.0.

Highlights

• 520x median speedup of dirty + freeze vs naive on sparse perturbations
• 10-12 GB/s sustained throughput (bandwidth-bound, not cache-bound)
• Bit-exact across architectures (Zen 2 Windows MinGW <-> Zen 4 Linux gcc)
• 5 MB compiled, no PyTorch, no ONNX, no GPU

Includes

• Runtime core (15 C++ headers + lc.cpp)
• Paper preprint v0.4 (5000 words, 5 figures, 18 reproducible experiments)
• 9 benchmark drivers + 200-mix MUSAN VAD bench
• 19 unit tests / 63 assertions
• Cayman-themed Pages docs (in docs/, enabled when repo turns public)

Honest applications evaluation

• 4 validated wins: NAB anomaly, audio classification, Reels music+speech VAD, DDoS POC
• 4 honest losses: clean-speech VAD, KWS multi-class, IP ranking, HAI multivariate

Companion Python binding: lcruntime-python.

Authors: Thiago Alencar (principal) + Anthropic Claude (AI implementation). See AUTHORS.md.