{
  "contract_version": "gab_250_contract_v1",
  "gab_id": "GAB-250",
  "canonical_name": "AssessmentLearningEmptyState",
  "module_owner": "EdTechAssessmentLearning",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "empty_state_id",
    "title",
    "body",
    "primary_cta"
  ],
  "optional_fields": [
    "empty_reason",
    "empty_reason_enum",
    "anti_fake_title",
    "anti_fake_text",
    "parallel_note",
    "fallback_options",
    "distinction_note",
    "secondary_cta"
  ],
  "field_types": {
    "title": "string — titre court de l'état vide affiché à l'élève",
    "body": "string — explication anti-fake affichée à l'élève",
    "empty_reason": "enum['no_assessment','not_available_level','questions_missing','not_ready','access_limited']",
    "empty_reason_enum": "array<string> — liste complète des 5 valeurs possibles pour affichage UI",
    "anti_fake_title": "string — titre de la section doctrine anti-fake",
    "anti_fake_text": "string — explication doctrine anti-fake",
    "parallel_note": "string — note doctrinaire parallèle (GAB-230, GAB-209)",
    "fallback_options": "array<{icon,color_key,title,description,module_label,action}> — options de secours dignes",
    "distinction_note": "string — distinction EmptyState vs ErrorFallbackBlock",
    "primary_cta": "object{label,action}",
    "secondary_cta": "object{label,action}"
  },
  "constraints": [
    "primary_cta : bouton structurel (HTML), libellé et action venant du JSON.",
    "fallback_options.color_key doit être parmi : visual, exercise, smartselect.",
    "empty_reason doit être l'une des valeurs de empty_reason_enum si les deux sont présents.",
    "Aucun contenu pédagogique ne doit être en dur dans le renderer — anti-invention stricte.",
    "EmptyState = absence légitime (pas de pool valide). Jamais masquer un bug technique derrière ce gabarit."
  ],
  "blocked_conditions": [
    "title absent (BLOCKED)",
    "body absent (BLOCKED)",
    "primary_cta absent (BLOCKED)",
    "gab_id absent (BLOCKED)"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "options role=button tabindex=0"
  ],
  "qa_cases": [
    { "case": "instance conforme", "expected": "rendu complet, 0 erreur" },
    { "case": "title absent", "expected": "BLOCKED listant le champ manquant" },
    { "case": "body absent", "expected": "BLOCKED listant le champ manquant" },
    { "case": "primary_cta absent", "expected": "BLOCKED listant le champ manquant" },
    { "case": "fallback_options vide ou absent", "expected": "zone options masquée, pas de crash" },
    { "case": "empty_reason non dans enum", "expected": "aucune reason-chip active" },
    { "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-250",
    "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)."
  }
}