{
  "contract_version": "gab_077_contract_v1",
  "gab_id": "GAB-077",
  "canonical_name": "VisualMindMap",
  "module_owner": "EdTechVisualLearning",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "mindmap_id",
    "center_label",
    "branches"
  ],
  "optional_fields": [
    "title",
    "primary_cta",
    "_note_dev"
  ],
  "field_types": {
    "center_label": "string — libellé du concept central (supports \\n pour saut de ligne)",
    "branches": "array<{id,emoji,branch_title,items}> — 1 à 4 branches ; au-delà de 4 la grille 2×2 sature",
    "primary_cta": "object{label,action}"
  },
  "constraints": [
    "branches : 1 à 4 éléments (grille 2×2, au-delà le 5e+ est ignoré).",
    "Chaque branche doit avoir branch_title et items non vides.",
    "center_label : texte court (≤ 30 car.) pour tenir dans le cercle central.",
    "primary_cta.label vient du JSON ; libellé structurel dans le HTML."
  ],
  "blocked_conditions": [
    "center_label absent",
    "branches vides"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "tabindex sur chaque branche"
  ],
  "qa_cases": [
    { "case": "instance conforme", "expected": "rendu complet, 4 branches, 0 erreur" },
    { "case": "champ requis manquant", "expected": "BLOCKED listant le champ" },
    { "case": "branches vides", "expected": "BLOCKED branches vides" },
    { "case": "clic branche", "expected": "panneau détail affiche emoji + titre + items" },
    { "case": "instance externe injectée", "expected": "le rendu change sans modifier le HTML" },
    { "case": "responsive 375/768/1024", "expected": "grille 1 col sur mobile, 2 col sur desktop, 0 débordement" }
  ],
  "traceability": {
    "derived_from_core_gab": "GAB-077",
    "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)."
  }
}