Reproduce claim 4 on REAL Census/Adult: 45222 samples, MLP 81.5%, DAG alters attribution (0.048), priority sweep separates sensitive (capital-gain) from stable (race) features
Reproduce claim 3 on REAL MNIST-800: 8 providers/DAG/10-NN, PASV penalizes Copier (0.026 vs Owner 0.492) and Poisoner (negative, decreasing in b), Boosters stable