docs: refresh the model card with the reseeded English numbers

docs: refresh model card to v0.3.0 and correct per-language ECE

Raise multilingual LoRA rank to 64 (accuracy 0.702 -> 0.853, es ECE 0.170 -> 0.038)

Update jeba-multi 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-multi LoRA adapter, calibration temperature, and model card

initial commit