Enable race testing in validation

docs/roadmap/implementation.md

@@ -226,6 +226,11 @@ imports only lightweight `buildinfo`. Stages 12–14 implement this agreed appro
 
 ## Stage 1: Introduce the specification with race selection
 
+**Completion:** Complete. `ReleaseRequest.Validation.Go.Race` and profile
+`validation.go.race` select `-race` for the single native Go suite. Both
+candidate operations share the selection, and race failures retain the `go-test`
+identity without falling back to an ordinary suite.
+
 **Outcome:** The first public/profile selection changes the one existing suite.
 
 1. Add `ReleaseRequest.Validation`, `ValidationSpec.Go`, and