{
  "t1": 1693,
  "t2": 3700,
  "t3": 6500,
  "t_grok": 4300,
  "rules": {
    "train_plateau_rel_drop": 0.01,
    "grok_test_fraction": 0.2,
    "cleanup_ssw_fraction": 0.05
  }
}