extract artifact r-series (12/8 layers, full data)

re-signed under subnet 0.3.0 (declared ceiling moved to 15000)

manifest for round 1239 (tokenizer synced)

manifest for round 1239

24 layers + outlier-split down_proj: 0.9139 held-out, 602ms probe

manifest: lr-tuned model, 0.9183 held-out

extract artifact from onnx_m_lr8/nodown

manifest for mixed-precision artifact

mixed precision: down_proj kept in fp32, 0.9113 held-out

signed manifest, QAT-4 artifact

extract artifact from onnx_qat4/int8pc

signed manifest for round 1238

extract artifact from onnx_qat/int8pc

initial commit