{
  "contract_version": "gab_014_contract_v1",
  "gab_id": "GAB-014",
  "canonical_name": "SessionVersionMismatch",
  "module_owner": "EdTechPlayEngine",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "session_version_id",
    "title",
    "body",
    "primary_cta"
  ],
  "optional_fields": [
    "subtitle",
    "version_label",
    "session_hash",
    "secondary_cta",
    "feedback_new",
    "feedback_keep"
  ],
  "field_types": {
    "title": "string — titre principal de l'avertissement",
    "subtitle": "string — sous-titre court",
    "body": "string — explication du changement de version",
    "version_label": "string — ex: 'v2.2.3 → v2.3.0'",
    "session_hash": "string — identifiant court de version (ex: 'a1f9…c2')",
    "primary_cta": "object{label,action} — bouton principal (charger nouvelle version)",
    "secondary_cta": "object{label,action} — bouton secondaire (garder ancienne version)",
    "feedback_new": "string — message affiché après choix nouvelle version",
    "feedback_keep": "string — message affiché après choix ancienne version"
  },
  "constraints": [
    "primary_cta.label et secondary_cta.label viennent du JSON, jamais hardcodés.",
    "version_label affiché dans le code technique si présent.",
    "session_hash affiché à côté de version_label si présent.",
    "feedback_new et feedback_keep sont des messages de confirmation côté moteur, pas redéfinis en HTML."
  ],
  "blocked_conditions": [
    "title absent (BLOCKED)",
    "body absent (BLOCKED)",
    "primary_cta absent (BLOCKED)"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion"
  ],
  "qa_cases": [
    { "case": "instance conforme", "expected": "rendu complet, 0 erreur" },
    { "case": "title absent", "expected": "BLOCKED listé" },
    { "case": "body absent", "expected": "BLOCKED listé" },
    { "case": "primary_cta absent", "expected": "BLOCKED listé" },
    { "case": "clic bouton primary_cta", "expected": "feedback_new affiché" },
    { "case": "clic bouton secondary_cta", "expected": "feedback_keep affiché" },
    { "case": "version_label présent", "expected": "affiché dans la zone code technique" },
    { "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-014",
    "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)."
  }
}