{
  "contract_version": "gab_276_contract_v1",
  "gab_id": "GAB-276",
  "canonical_name": "MethodLearningCommonMistakeMethod",
  "module_owner": "EdTechMethodLearning",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "mistake_method_id",
    "method_ref",
    "mistakes",
    "prevention_rules",
    "correction_actions"
  ],
  "optional_fields": [
    "title",
    "subtitle",
    "method_label",
    "reason_title",
    "reason_text",
    "use_when",
    "do_not_use_when",
    "mistake_signals",
    "example_wrong_answers",
    "trap_detector_ref",
    "remediation_refs",
    "severity",
    "source_metadata"
  ],
  "field_types": {
    "mistake_method_id": "string — identifiant unique de l'instance (slug)",
    "method_ref": "string — référence au GAB de méthode source (ex: GAB-271)",
    "method_label": "string — libellé humain de la méthode (ex: Pythagore)",
    "mistakes": "array<{id:string, label:string, severity:enum['high','med','low'], name:string, wrong_example:string, fix:string}> — non vide",
    "prevention_rules": "array<string> — règles préventives avant application de la méthode, non vide",
    "correction_actions": "array<{label:string, action:string, style:enum['primary','secondary']}> — au moins 1 bouton",
    "reason_title": "string",
    "reason_text": "string",
    "use_when": "array<string>",
    "do_not_use_when": "array<string>"
  },
  "constraints": [
    "mistakes doit contenir au moins 1 erreur avec wrong_example et fix renseignés.",
    "severity doit être 'high', 'med' ou 'low' — jamais une autre valeur.",
    "correction_actions : au moins 1 entrée avec label et action.",
    "prevention_rules : au moins 1 règle.",
    "Contenu extrait uniquement de la source — jamais inventé."
  ],
  "blocked_conditions": [
    "mistake_method_id absent (BLOCKED)",
    "method_ref absent (BLOCKED)",
    "mistakes vides (BLOCKED)",
    "prevention_rules vides (BLOCKED)",
    "correction_actions vides (BLOCKED)"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "fallback_text"
  ],
  "qa_cases": [
    { "case": "instance conforme (3 erreurs + 3 règles + 2 CTA)", "expected": "rendu complet, 0 erreur" },
    { "case": "mistakes vides []", "expected": "BLOCKED : mistakes vides" },
    { "case": "prevention_rules absent", "expected": "BLOCKED : prevention_rules vides" },
    { "case": "mistake_method_id absent", "expected": "BLOCKED : mistake_method_id absent" },
    { "case": "severity='unknown'", "expected": "affiché tel quel, pas de crash — classe CSS neutre" },
    { "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-276",
    "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)."
  }
}