{
  "contract_version": "gab_185_contract_v1",
  "gab_id": "GAB-185",
  "canonical_name": "LevelTestProgressCompare",
  "module_owner": "EdTechLevelTest",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "progress_compare_id",
    "title",
    "before",
    "after",
    "delta_label",
    "breakdown",
    "disclaimer"
  ],
  "optional_fields": [
    "subtitle",
    "breakdown_title",
    "next_step",
    "primary_cta"
  ],
  "field_types": {
    "before": "object{date:string, score_pct:number(0..100), label:string}",
    "after": "object{date:string, score_pct:number(0..100), label:string}",
    "delta_label": "string — résumé de progression (ex: '+37 points en 13 jours')",
    "breakdown": "array<{skill:string, change:string, trend:enum['up','flat','down']}>",
    "primary_cta": "object{label:string, action:string}"
  },
  "constraints": [
    "before.score_pct et after.score_pct dans [0,100].",
    "breakdown : chaque item porte trend ('up','flat','down') — jamais inventé.",
    "disclaimer : toujours présent, rappelle que la progression est indicative et non officielle.",
    "primary_cta : optionnel mais structurel si présent (libellé venant du JSON).",
    "Progression = comparaison interne 2 diagnostics — ne jamais comparer à d'autres élèves."
  ],
  "blocked_conditions": [
    "before absent ou incomplet",
    "after absent ou incomplet",
    "breakdown absent ou vide",
    "disclaimer absent"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "fallback_text"
  ],
  "qa_cases": [
    { "case": "instance conforme", "expected": "rendu complet, 0 erreur" },
    { "case": "champ requis manquant (ex: before absent)", "expected": "BLOCKED listant le champ" },
    { "case": "breakdown vide []", "expected": "BLOCKED — breakdown absent ou vide" },
    { "case": "disclaimer absent", "expected": "BLOCKED — disclaimer absent" },
    { "case": "instance externe injectée via init(ext)", "expected": "le rendu change sans modifier le HTML" },
    { "case": "responsive 375/768/1024", "expected": "pc-flow en colonne sur mobile, aucun débordement horizontal" }
  ],
  "traceability": {
    "derived_from_core_gab": "GAB-185",
    "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)."
  }
}