{
  "contract_version": "gab_188_contract_v1",
  "gab_id": "GAB-188",
  "canonical_name": "PathMapMissionNode",
  "module_owner": "EdTechPathMap",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "mission_node_id",
    "title",
    "objective",
    "primary_cta"
  ],
  "optional_fields": [
    "icon",
    "state",
    "module_label",
    "difficulty",
    "estimated_duration",
    "activity_count",
    "reward_context",
    "secondary_cta",
    "accessibility",
    "child_safety"
  ],
  "field_types": {
    "state": "enum['active','available','completed']",
    "primary_cta": "object{label,action}",
    "secondary_cta": "object{label,action}",
    "icon": "string (emoji ou code icône)",
    "difficulty": "string (ex : '⭐⭐ Moyen')",
    "estimated_duration": "string (ex : '4 min')",
    "activity_count": "string (ex : '1 activité')",
    "reward_context": "string — description textuelle, jamais la récompense réelle (pilotée par PlayKit)",
    "accessibility": "object{keyboard_navigable:boolean,focus_visible:boolean}",
    "child_safety": "object{reward_hardcoded:boolean,reward_note:string}"
  },
  "constraints": [
    "primary_cta.label : libellé du bouton primaire — vient du JSON, jamais en dur dans le HTML.",
    "state détermine le style visuel de la carte (active=bordure violet, completed=bordure mint, available=bordure neutre).",
    "reward_context est un texte descriptif ; la récompense réelle est injectée par PlayKit à la validation, jamais hardcodée.",
    "secondary_cta est optionnel ; si absent, le bouton Détails n'est pas rendu."
  ],
  "blocked_conditions": [
    "mission_node_id absent",
    "title absent",
    "objective absent",
    "primary_cta absent"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion"
  ],
  "qa_cases": [
    { "case": "instance conforme (state active)", "expected": "carte avec bordure violet + pill 'En cours' + 2 CTA" },
    { "case": "state completed", "expected": "carte bordure mint, pill 'Terminé'" },
    { "case": "state available", "expected": "carte neutre, pill 'Disponible'" },
    { "case": "champ requis manquant (title)", "expected": "BLOCKED listant le champ" },
    { "case": "secondary_cta absent", "expected": "bouton Détails absent, pas d'erreur" },
    { "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-188",
    "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). Nœuds connexes : GAB-152 (mission mini-jeu), GAB-047 (mission story), GAB-189 (nœud verrouillé)."
  }
}