{
  "contract_version": "gab_341_contract_v1",
  "gab_id": "GAB-341",
  "canonical_name": "SafetyFallbackLearningMissingContent",
  "module_owner": "EdTechSafetyFallbackLearning",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "missing_content_id",
    "diagnostic",
    "student_message",
    "pedagogical_fallback"
  ],
  "optional_fields": [
    "title",
    "fallback_prompt",
    "admin_debug",
    "use_when",
    "do_not_use_when",
    "child_safety"
  ],
  "field_types": {
    "diagnostic": "object{state,label,rationale}",
    "student_message": "object{heading,body}  — message simple destiné à l'élève, jamais l'erreur technique brute",
    "pedagogical_fallback": "array<{label,blocking:boolean,feedback,tone:enum['ok','warn','bad','note'],is_admin?:boolean}>",
    "admin_debug": "string  — log technique séparé, non visible par l'élève",
    "use_when": "array<string>",
    "do_not_use_when": "array<string>",
    "child_safety": "object{no_blank_screen:boolean,no_fake_content:boolean,review_required:boolean,review_note}"
  },
  "constraints": [
    "Jamais d'écran blanc : student_message + pedagogical_fallback toujours rendus.",
    "Anti-invention : toute option de génération de faux contenu porte blocking:true et est refusée (panneau bad).",
    "Séparation stricte message élève / debug admin : admin_debug n'est jamais affiché à l'élève.",
    "Au moins une option de pedagogical_fallback doit être non-bloquante (filet honnête disponible)."
  ],
  "blocked_conditions": [
    "diagnostic.state absent",
    "student_message absent",
    "pedagogical_fallback vide"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "fallback_text"
  ],
  "qa_cases": [
    { "case": "instance conforme", "expected": "rendu complet, message élève + filets, 0 erreur" },
    { "case": "champ requis manquant", "expected": "BLOCKED listant le champ" },
    { "case": "clic option blocking:true (faux contenu)", "expected": "panneau bad « on ne génère JAMAIS un faux contenu », état non-ready" },
    { "case": "clic filet non-bloquant", "expected": "panneau ok + état fallback_available / reported" },
    { "case": "instance externe injectée", "expected": "le rendu change sans modifier le HTML" },
    { "case": "responsive 375/768/1024", "expected": "aucun débordement horizontal" }
  ],
  "traceability": {
    "derived_from_core_gab": "GAB-341",
    "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). GAB SENSIBLE child-safety — relecture Boss requise."
  }
}