End-to-end example

// In a traced ASP.NET Core endpoint or service method:
var result = Result<Order>.Ok(order)
    .WithOpenTelemetry()                              // seed from active OTel span
    .WithContext(entityId: order.Id.ToString())
    .Bind(ValidateStock)
    .Bind(ProcessPayment)
    .Tap(o => logger.LogInformation("Order {Id} processed", o.Id))
    .WriteErrorTagsToSpan();                          // on failure: push tags to span

// Any error produced in Bind/Ensure automatically receives:
//   Entity, EntityId, CorrelationId, OperationName as tags
//   → those same tags land on the OTel span via WriteErrorTagsToSpan

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