cards: ling duel + v7.1, ornith 1.5 PPLs

card: TOX 4500 PPL 9.9629, base_model ornith-ai

README: ling duel (bottom-up vs top-down), card update

v7+: toxicity, router pins, granite+bailingmoe3 archs, metadata detection, ling card

v7: whole-head MTP, Q5_K embd pins, CAN_Q3 types, top-down mode, transit fixes, scripts cleanup