{
  "contract_version": "gab_394_contract_v1",
  "gab_id": "GAB-394",
  "canonical_name": "DataLearningTrendDetect",
  "module_owner": "EdTechDataLearning",
  "renderer_key": "text_cta",
  "required_fields": [
    "gab_id",
    "trend_detect_id",
    "data_ref",
    "trend_prompt",
    "time_or_order_axis",
    "trend_rules"
  ],
  "optional_fields": [
    "title",
    "trend_segments",
    "outliers",
    "confidence_level",
    "evidence_points",
    "fallback_text_summary"
  ],
  "constraints": [
    "Une tendance doit être liée à une période ou ordre défini.",
    "Citer points de départ/fin ou segments clés.",
    "Signaler exceptions/outliers.",
    "Ne pas transformer corrélation en causalité.",
    "Wording prudent si peu de points."
  ],
  "blocked_conditions": [
    "trend_detect_id absent (BLOCKED)",
    "data_ref absent (BLOCKED)",
    "trend_prompt absent (BLOCKED)",
    "time_or_order_axis absent (BLOCKED)",
    "trend_rules absent (BLOCKED)"
  ],
  "accessibility": [
    "keyboard_navigable",
    "focus_visible",
    "prefers_reduced_motion",
    "fallback_text"
  ],
  "qa_cases": [
    {
      "case": "instance conforme",
      "expected": "rendu complet, données affichées, CTA actif"
    },
    {
      "case": "champ requis manquant",
      "expected": "BLOCKED listant le champ absent"
    },
    {
      "case": "instance externe via init(ext)",
      "expected": "le rendu change sans modifier le HTML (critère d'or)"
    },
    {
      "case": "responsive 375/768/1024",
      "expected": "aucun débordement horizontal"
    }
  ],
  "traceability": {
    "derived_from_core_gab": "GAB-394",
    "note": "Ce schema VALIDE l'instance. Le contrat pédagogique complet vit dans le CORE-GAB officiel."
  }
}