{
  "contract_version": "gab_210_contract_v1",
  "gab_id": "GAB-210",
  "canonical_name": "PlayEngineUnsupportedModuleFallback",
  "module_owner": "EdTechPlayEngine",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "fallback_id",
    "title",
    "body",
    "module_owner",
    "fallback_reason",
    "step_status",
    "primary_cta"
  ],
  "optional_fields": [
    "module_ref",
    "distinction_items",
    "skip_cta"
  ],
  "field_types": {
    "title": "string",
    "body": "string",
    "module_owner": "string — identifiant du module non supporté (source de vérité doctrinaire)",
    "module_ref": "string — chemin de référence du contenu non supporté",
    "fallback_reason": "enum['no_renderer_available','module_unknown','not_allowlisted','renderer_missing']",
    "step_status": "enum['optional','mandatory'] — pilote l'activation du bouton skip",
    "distinction_items": "array<string> — distinctions doctrinaires vs AccessGate/ErrorFallbackBlock",
    "primary_cta": "object{label,action}",
    "skip_cta": "object{label,label_disabled,action} — bouton skip ; désactivé si step_status=mandatory"
  },
  "constraints": [
    "step_status='optional' → bouton skip activé avec label normal.",
    "step_status='mandatory' → bouton skip désactivé avec label_disabled.",
    "module_owner est affiché comme source de vérité (jamais 'provider').",
    "Ce GAB ne remplace PAS SessionAccessGate (accès refusé) ni ErrorFallbackBlock (erreur serveur)."
  ],
  "blocked_conditions": [
    "title absent",
    "body absent",
    "module_owner absent",
    "fallback_reason absent",
    "step_status absent",
    "primary_cta absent"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "skip_button_disabled_state_explicit"
  ],
  "qa_cases": [
    { "case": "instance conforme, step_status=optional", "expected": "rendu complet, bouton skip activé" },
    { "case": "step_status=mandatory", "expected": "bouton skip désactivé + label_disabled affiché" },
    { "case": "champ requis manquant (ex: title)", "expected": "BLOCKED listant le champ" },
    { "case": "instance externe injectée via init(ext)", "expected": "le rendu change sans modifier le HTML" },
    { "case": "responsive 375/768/1024", "expected": "aucun débordement horizontal" }
  ],
  "traceability": {
    "derived_from_core_gab": "GAB-210",
    "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). Source HTML : INDEX-300-playengine-composite-GAB-206-210-PLAYABLE.html, bloc data-tpl='210'."
  }
}