Integrate selected builds with candidate workflows

check.go

@@ -18,23 +18,26 @@ type Candidate struct {
 	Version       string
 }
 
-// ReleaseRequest contains the local inputs used by Check. Remote is retained
-// for publication operations; Check makes no remote availability claim.
+// ReleaseRequest contains the inputs used to validate and optionally build one
+// local candidate. Remote is retained for publication operations; Check makes
+// no remote availability claim.
 type ReleaseRequest struct {
 	RepositoryDir string
 	Product       string
 	Version       string
 	Remote        string
 	Validate      func(context.Context, Candidate) error
+	Build         *BuildSpec // optional selected-target build after validation.
 	Output        io.Writer
 }
 
 // Check validates one local, committed release candidate. It requires a clean
 // worktree and index on main, a committed note matching Product and Version,
 // and an unused local tag. If Validate is nil, the offline Go test suite runs.
-// It rechecks branch, HEAD, worktree, index, and local tag state after
-// validation. Success establishes local candidate evidence only; it does not
-// establish remote availability.
+// If Build selects targets, Check builds them after validation in temporary
+// storage outside the worktree, then rechecks branch, HEAD, worktree, index,
+// and local tag state. Success establishes local candidate evidence only; it
+// does not establish remote availability.
 func Check(ctx context.Context, request ReleaseRequest) (Candidate, error) {
 	var validate func(context.Context, candidate.Candidate) error
 	if request.Validate != nil {
@@ -51,6 +54,7 @@ func Check(ctx context.Context, request ReleaseRequest) (Candidate, error) {
 		Product:       request.Product,
 		Version:       request.Version,
 		Validate:      validate,
+		AfterValidate: candidateBuildCallback(request.Build, request.Output),
 		Output:        request.Output,
 	})
 	if err != nil {