follow stab55_27, 1. adopt conservative c64 large ratio 2.0052x; 2. retain 1.9898x as reproducibility range; 3. sync report and skills. [opencode].
follow stab55_27, 1. adopt conservative c64 large ratio 2.0052x; 2. retain 1.9898x as reproducibility range; 3. sync report and skills. [opencode].