fno_log_masked / TRAIN20

6000 full 20-case updates; 984860 parameters; best_train update 6000. All cases U and VM <=1%: False. No heldout or generalization claim.

Final6000 metric	Mean (%)	Worst (%)
U_relative_L2	3.725417	12.818332
VM_relative_L2	3.988434	11.918607
peak5_VM_relative_L2	2.918892	10.059546
VM_max_relative_error	3.006379	10.765936
VM_at_true_peak_relative_error	2.529800	9.446334

Negative VM cases: 6; minimum -34.38195308299185 MPa. Raw values preserved.

TRAIN20 only. CPU checkpoint/metrics audit; no CPU full-model forward replay, GPU update replay, FE re-solve or heldout generalization claim.

actual_training_curves