fix: deliver validated AI insight responses

internal/growthreport/repository.go

@@ -24,6 +24,14 @@ const reportLeaseDuration = 3 * time.Minute
 
 func NewRepository(pool *pgxpool.Pool) *Repository { return &Repository{pool: pool} }
 
+func (r *Repository) ActiveCatalogVersion(ctx context.Context) (string, error) {
+	var version string
+	if err := r.pool.QueryRow(ctx, `SELECT version FROM calendar_catalog_versions WHERE status='ACTIVE'`).Scan(&version); err != nil {
+		return "", fmt.Errorf("loading active event catalog version: %w", err)
+	}
+	return version, nil
+}
+
 type CreateRecord struct {
 	ID                string
 	MerchantID        int64