{
  "format": "tessera.continuous-tuning.trigger.v1",
  "trigger_id": "tool-call-specialist.retrain-or-evaluate",
  "version": 2,
  "conditions": [
    {
      "when": "no champion pointer exists",
      "then": "baseline round: freeze holdouts, evaluate the unchanged base"
    },
    {
      "when": "accepted rows of the counted origins not yet trained on >= min_new_accepted_rows",
      "then": "training round"
    },
    {
      "when": "interval_hours since the champion was last evaluated",
      "then": "evaluation round on a fresh holdout"
    },
    {
      "otherwise": "no change"
    }
  ],
  "counted_origins": [
    "initial",
    "stream",
    "mined"
  ],
  "min_new_accepted_rows": 32,
  "interval_hours": 24,
  "max_training_rounds": 4,
  "max_rounds_per_tick": 1,
  "evaluated_by": "the tick verb, claimed by an authorized worker",
  "schedule": {
    "status": "not_activated",
    "on_demand": "python -m examples.continuous_tuning.cli tick",
    "later": "A flag-gated scheduled() handler may enqueue one idempotent tick verb per window. It never trains, evaluates or calls a model, and it grants no authority."
  },
  "changes": [
    "v2: allows a fourth training round for the schema_augment comparison; the conditions are unchanged."
  ]
}