{
  "contract_version": "gab_216_contract_v1",
  "gab_id": "GAB-216",
  "canonical_name": "AdaptiveLearningMasteryCheck",
  "module_owner": "EdTechAdaptiveLearning",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "mastery_check_id",
    "title",
    "question",
    "choices",
    "correct_choice_id",
    "feedback_correct",
    "feedback_wrong",
    "decision_advance",
    "decision_remediate"
  ],
  "optional_fields": [
    "subtitle",
    "banner_label",
    "instruction",
    "check_type",
    "retry_cta_label",
    "pending_cta_label"
  ],
  "field_types": {
    "choices": "array<{id:string, label:string}> — min 2, max 4 options",
    "correct_choice_id": "string — doit correspondre à un id dans choices",
    "check_type": "enum['single_question','multi_question'] — défaut: single_question",
    "feedback_correct": "object{heading:string, body:string}",
    "feedback_wrong": "object{heading:string, body:string}",
    "decision_advance": "object{label:string, cta_label:string}",
    "decision_remediate": "object{label:string, cta_label:string}"
  },
  "constraints": [
    "choices : 1-3 questions max (micro-check, pas un examen complet).",
    "correct_choice_id doit correspondre exactement à l'id d'un des choices.",
    "Pas de blocage sans retry possible (retry_cta_label doit rester accessible).",
    "Pas un examen noté officiel — banner_label doit le mentionner si présent.",
    "feedback_correct et feedback_wrong : expliquer le POURQUOI (raison adaptive), pas juste vrai/faux."
  ],
  "blocked_conditions": [
    "question absente",
    "choices vide ou absent",
    "correct_choice_id absent",
    "feedback_correct absent",
    "feedback_wrong absent"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "aria_labels_choices"
  ],
  "qa_cases": [
    { "case": "instance conforme", "expected": "rendu complet, QCM jouable, feedback correct/wrong, chaîne adaptive visible" },
    { "case": "champ requis manquant", "expected": "BLOCKED listant le champ manquant" },
    { "case": "réponse correcte sélectionnée", "expected": "feedback_correct affiché, decision_advance, CTA ADVANCE activé" },
    { "case": "réponse incorrecte sélectionnée", "expected": "feedback_wrong affiché, decision_remediate, CTA REMEDIATE activé, retry visible" },
    { "case": "retry après réponse incorrecte", "expected": "état reset, toutes les choices déverrouillées" },
    { "case": "instance externe injectée", "expected": "le rendu change sans modifier le HTML" },
    { "case": "responsive 375/768/1024", "expected": "aucun débordement horizontal" }
  ],
  "traceability": {
    "derived_from_core_gab": "GAB-216",
    "note": "Ce schema VALIDE l'instance. Le contrat pédagogique complet (input_contract/validation_logic/feedback_scoring_logic) vit dans le CORE-GAB officiel, pas ici (évite la duplication). Chaîne adaptive : réponse OK → ADVANCE (GAB-220 NextStepBridge) ; réponse KO → REMEDIATE (GAB-213 RemediationPath)."
  }
}