ONNX Model Release - b3c128_v2

This is the best and final model weights, converted to ONNX with export_onnx.py, of the run b3c128nbt_2025-08-18_19-22-00 (also labeled as b3c128_v2).

Please use this with the new inference engine.

这是目前最强的模型检查点，也是 Saiblo 天梯上使用的模型。