{
  "contract_version": "gab_258_contract_v1",
  "gab_id": "GAB-258",
  "canonical_name": "CollaborationLearningCorrectionSwap",
  "module_owner": "EdTechCollaborationLearning",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "correction_swap_id",
    "title",
    "checklist",
    "roles",
    "primary_cta"
  ],
  "optional_fields": [
    "subtitle",
    "swap_domain",
    "swap_domain_enum",
    "estimated_duration",
    "checklist_label",
    "reason_label",
    "reason_text",
    "secondary_cta"
  ],
  "field_types": {
    "checklist": "array<{id,text,status:enum['ok','ko','todo']}>",
    "roles": "array<{id,tag,description}> — exactement 2 rôles (A et B)",
    "swap_domain": "enum['math_proof','text_argument','language_writing','science_method']",
    "primary_cta": "object{label,action}",
    "secondary_cta": "object{label,action}"
  },
  "constraints": [
    "checklist doit contenir au moins 1 critère.",
    "roles doit contenir exactement 2 entrées (A et B).",
    "checklist[].status doit être 'ok', 'ko' ou 'todo'.",
    "primary_cta.label est le libellé du bouton principal rendu en HTML.",
    "Aucun contenu pédagogique (texte des critères, description des rôles) ne doit être codé en dur dans le HTML."
  ],
  "blocked_conditions": [
    "checklist absente ou vide",
    "roles absents ou vides",
    "primary_cta absent"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "aria_labels_on_checklist_items",
    "color_not_sole_indicator"
  ],
  "qa_cases": [
    { "case": "instance conforme", "expected": "rendu complet, 0 erreur" },
    { "case": "checklist absente", "expected": "BLOCKED listant le champ" },
    { "case": "roles absents", "expected": "BLOCKED listant le champ" },
    { "case": "primary_cta absent", "expected": "BLOCKED listant le champ" },
    { "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-258",
    "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)."
  }
}