pub async fn handle(
__arg0: State<Arc<AppState>>,
__arg1: Json<MarketRequest>,
) -> impl IntoResponseExpand description
POST /api/market/summary — Peg and order book health. The pair and venue
are read exactly as the CLI reads them (core Pair and MarketVenue).
Errors map through status_for: an unknown venue or a chain mismatch is
400, no DEX pairs is 404.