{
  "learner_id": "L-101",
  "competency_id": "COMP-API-01",
  "evidence_id": "EV-1",
  "event_time": "2026-09-14T09:30:00Z",
  "evidence_type": "PROJECT_ARTIFACT",
  "context_id": "CTX-PROJECT",
  "independence_level": "INDEPENDENT",
  "quality_state": "STRONG",
  "mastery_state_before": "DEVELOPING",
  "transition_rule_id": "TR-v1",
  "mastery_state_after": "MASTERED",
  "confidence_band": "HIGH",
  "contradiction_state": "NONE",
  "staleness_state": "FRESH",
  "review_due": "2026-09-21",
  "provenance": "fixture://mkn004#EV-1",
  "evidence_dimension_count": 4
}