Thinking-aware retrain: 4 epochs on 28.6k corpus (45% thinking traces); val cond_acc 0.622 -> 0.685/0.697/0.715. Thinking-mode acceptance 0.33->0.41 (+23%), thinking throughput 244->272 tok/s. Card, chart, val_metrics, train_command updated.
0a266f9 verified 