fix: preserve wfctl release version

.github/workflows/release.yml

@@ -333,3 +333,17 @@ jobs:
         repository: ${{ matrix.repo }}
         event-type: workflow-release
         client-payload: '{"version": "${{ env.TAG_NAME }}"}'
+
+  notify-workflow-registry:
+    name: Notify workflow-registry
+    runs-on: ubuntu-latest
+    needs: release
+    if: ${{ !contains(inputs.tag_name || github.ref_name, '-') }}
+    steps:
+    - name: Trigger registry manifest sync
+      uses: peter-evans/repository-dispatch@v4
+      with:
+        token: ${{ secrets.repo_dispatch_token }}
+        repository: GoCodeAlone/workflow-registry
+        event-type: workflow-release
+        client-payload: '{"workflow": "${{ github.repository }}", "version": "${{ env.TAG_NAME }}"}'

cmd/wfctl/main.go

@@ -28,7 +28,19 @@ import (
 //go:embed wfctl.yaml
 var wfctlConfigBytes []byte
 
-var version = buildVersion()
+// version is set by release builds via:
+//
+//	go build -ldflags "-X main.version=vX.Y.Z"
+//
+// Keep the declaration as a constant string initializer so the linker can
+// override it. init falls back to Go build metadata for module-installed builds.
+var version = "dev"
+
+func init() {
+	if version == "dev" {
+		version = buildVersion()
+	}
+}
 
 func buildVersion() string {
 	if info, ok := debug.ReadBuildInfo(); ok && info.Main.Version != "" && info.Main.Version != "(devel)" {

cmd/wfctl/main_test.go

@@ -6,7 +6,9 @@ import (
 	"flag"
 	"fmt"
 	"os"
+	"os/exec"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 
@@ -85,6 +87,29 @@ func TestBuildVersionStripsDirtyMarker(t *testing.T) {
 	}
 }
 
+func TestLinkedVersionOverridesBuildInfo(t *testing.T) {
+	exeName := "wfctl"
+	if runtime.GOOS == "windows" {
+		exeName += ".exe"
+	}
+	exe := filepath.Join(t.TempDir(), exeName)
+	build := exec.Command("go", "build", "-o", exe, "-ldflags", "-X main.version=v9.9.9", ".")
+	build.Env = append(os.Environ(), "GOWORK=off")
+	if out, err := build.CombinedOutput(); err != nil {
+		t.Fatalf("go build wfctl: %v\n%s", err, out)
+	}
+
+	run := exec.Command(exe, "--version")
+	run.Env = append(os.Environ(), "WFCTL_NO_UPDATE_CHECK=1", "CI=true")
+	out, err := run.CombinedOutput()
+	if err != nil {
+		t.Fatalf("wfctl --version: %v\n%s", err, out)
+	}
+	if got := strings.TrimSpace(string(out)); got != "v9.9.9" {
+		t.Fatalf("linked version = %q, want v9.9.9", got)
+	}
+}
+
 func writeTestConfig(t *testing.T, dir, name, content string) string {
 	t.Helper()
 	path := filepath.Join(dir, name)