Deliver target references during pipeline preparation

internal/framework/pipeline/construction.go

@@ -19,6 +19,7 @@ type ModuleDependencies struct {
 type BuildRequest struct {
 	Dependencies ModuleDependencies
 	Options      map[string]any
+	References   contracts.ReferenceSet
 }
 
 // OptionValidator validates one module binding without constructing it.
@@ -39,6 +40,7 @@ func cloneBuildRequest(request BuildRequest) BuildRequest {
 	return BuildRequest{
 		Dependencies: request.Dependencies,
 		Options:      cloneOptions(request.Options),
+		References:   CloneReferenceSet(request.References),
 	}
 }