{
  "activityId": "nature-detective-p3-v1",
  "schemaVersion": "1.0",
  "rubric": {"cases": 13, "classificationMarksPerCase": 1, "evidenceMarksPerCase": 1, "maximum": 26, "scope": "latest checked answers in current round"},
  "events": [
    {"action":"inspect-clue","capture":"case ID, clue number, viewed-clue state, relative time","interpretation":"observation process only; unscored"},
    {"action":"check-evidence","capture":"authoritative classification and evidence IDs; first/latest; checks; actual revisions; hints/guide before check; feedback exposure","interpretation":"separate classification and reasoning marks"},
    {"action":"view-hint","capture":"case, cumulative hint views and whether before first check","interpretation":"support use, not ability"},
    {"action":"view-field-guide","capture":"case, guide-view count","interpretation":"optional support use"},
    {"action":"new-round","capture":"round, reset score and coverage; bounded earlier-round records retained","interpretation":"current and prior rounds stay distinguishable"}
  ],
  "completion": "13 valid required case checks; final required check saves automatically before opening reports",
  "bounds": {"historyEvents":80,"earlierRoundSummaries":3,"visibleTrailEvents":20,"feedbackRecentEvents":6},
  "interpretation": "Only authored explicit distractors receive provisional reasoning-gap codes. Other incorrect and blank responses do not receive a diagnosis. No score for clicking, time or merely opening evidence.",
  "excluded": ["raw typing", "copied learner identity", "launch credentials", "pointer motion", "unrelated browser data"]
}