chore: republish the seed-2 English adapter (0.859 acc / 0.023 ECE)

fix: resync jeba-en checkpoint and card with checkpoints/en (v0.3.0)

Update jeba-en adapter, choice head (r=32), and per-language temperature (v0.2.0)

Add dedicated choice head (v3) and refresh calibration

Update adapter + calibration (v2 templates)

Add jeba-en LoRA adapter, calibration temperature, and model card