{
  "contract_version": "gab_081_contract_v1",
  "gab_id": "GAB-081",
  "canonical_name": "VisualDataTable",
  "module_owner": "EdTechVisualLearning",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "table_id",
    "columns",
    "items"
  ],
  "optional_fields": [
    "title",
    "caption",
    "accessibility"
  ],
  "field_types": {
    "columns": "array<string> — exactement 2 entrées (header col-1, header col-2)",
    "items": "array<{key:string, value:string}> — min 1 ligne",
    "caption": "string|null — texte affiché sous le tableau si présent",
    "accessibility": "object{keyboard_navigable:boolean, focus_visible:boolean, prefers_reduced_motion:boolean}"
  },
  "constraints": [
    "columns doit contenir exactement 2 entrées (tableau 2 colonnes).",
    "items doit contenir au moins 1 élément {key, value}.",
    "Aucun contenu pédagogique hardcodé dans le renderer HTML.",
    "caption:null → zone non rendue (pas de balise vide)."
  ],
  "blocked_conditions": [
    "columns absent ou vide (BLOCKED)",
    "items absent ou vide (BLOCKED)",
    "gab_id absent (BLOCKED)"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "table role=table avec thead/tbody sémantiques"
  ],
  "qa_cases": [
    { "case": "instance conforme", "expected": "tableau rendu, header + toutes lignes, 0 erreur" },
    { "case": "items vide []", "expected": "BLOCKED listant le champ items" },
    { "case": "columns absent", "expected": "BLOCKED listant le champ columns" },
    { "case": "instance externe injectée via init(ext)", "expected": "rendu change sans modifier le HTML" },
    { "case": "caption null", "expected": "zone caption absente du DOM" },
    { "case": "responsive 375/768/1024", "expected": "aucun débordement horizontal" }
  ],
  "traceability": {
    "derived_from_core_gab": "GAB-081",
    "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)."
  }
}