//! Retrieves the `X-Athena-Client` header that selects the Supabase/Postgres client.
useactix_web::HttpRequest;/// Returns the header value used to decide which downstream client should handle the request.
pubfnx_athena_client(req:&HttpRequest)-> String{
req.headers().get("X-Athena-Client").and_then(|h|h.to_str().ok()).unwrap_or("").to_string()}