{
  "contract_version": "gab_055_contract_v1",
  "gab_id": "GAB-055",
  "canonical_name": "StoryImageScene",
  "module_owner": "EdTechStoryLearning",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "scene_id",
    "scene_emoji",
    "caption",
    "hotspots"
  ],
  "optional_fields": [
    "title",
    "primary_cta"
  ],
  "field_types": {
    "scene_emoji": "string — emoji ou code image représentant la scène",
    "caption": "string — texte de légende guidant l'observation",
    "hotspots": "array<{id,style_top,style_left,label,detail}> — points d'intérêt positionnés sur l'image ; minimum 1",
    "primary_cta": "object{label,action}"
  },
  "constraints": [
    "hotspots : au moins 1 élément requis.",
    "hotspots[].style_top et style_left : valeurs CSS valides (ex: '30%', '12px').",
    "hotspots[].detail : texte affiché au clic — jamais vide si le hotspot est présent.",
    "primary_cta : bouton structurel (HTML), libellé venant du JSON."
  ],
  "blocked_conditions": [
    "scene_id absent",
    "scene_emoji absent",
    "caption absent",
    "hotspots absent ou tableau vide"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "fallback_text"
  ],
  "qa_cases": [
    { "case": "instance conforme", "expected": "rendu complet, hotspots cliquables, 0 erreur" },
    { "case": "champ requis manquant (ex: caption)", "expected": "BLOCKED listant le champ" },
    { "case": "hotspots tableau vide", "expected": "BLOCKED 'hotspots absent ou tableau vide'" },
    { "case": "clic hotspot", "expected": "detail s'affiche dans le panneau sous la légende" },
    { "case": "instance externe injectée", "expected": "rendu change sans modifier le HTML" },
    { "case": "responsive 375/768/1024", "expected": "aucun débordement horizontal" }
  ],
  "traceability": {
    "derived_from_core_gab": "GAB-055",
    "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)."
  }
}