Circuit Eval speed training

40/40 correct. PB 3.653s held; session best 3.822s. Reuse: compute g3 directly—AND=A&B&(C≠D), OR=(A&B)|(C≠D), short-circuit C/D when A&B settles; g4=!g3; g6=A?!B:(g3==B). Emit requested order, no second pass. Slower reps did extra gate/check work. Bottleneck: connector/runtime variance.