Release 1.4.0: macOS CLI builds and multi-platform update channel.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/protocols/naive/binary.go

@@ -7,6 +7,7 @@ import (
 	"io"
 	"net/http"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"runtime"
 	"strings"
@@ -54,13 +55,13 @@ func EnsureBinary(binDir string) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	zipPath := filepath.Join(binDir, assetName)
-	if err := downloadFile(zipPath, url); err != nil {
+	archivePath := filepath.Join(binDir, assetName)
+	if err := downloadFile(archivePath, url); err != nil {
 		return "", err
 	}
-	defer os.Remove(zipPath)
+	defer os.Remove(archivePath)
 
-	if err := unzipNaive(zipPath, binDir); err != nil {
+	if err := extractNaiveArchive(archivePath, binDir); err != nil {
 		return "", err
 	}
 	return ResolveBinary(binDir)
@@ -119,9 +120,6 @@ func findReleaseAsset(pattern string) (name, downloadURL string, err error) {
 	}
 	for _, a := range rel.Assets {
 		if strings.HasPrefix(a.Name, prefix) && strings.HasSuffix(a.Name, suffix) {
-			if strings.Contains(a.Name, ".tar.") {
-				return "", "", fmt.Errorf("auto-extract of %s not implemented; download manually from %s", a.Name, a.BrowserDownloadURL)
-			}
 			return a.Name, a.BrowserDownloadURL, nil
 		}
 	}
@@ -147,6 +145,61 @@ func downloadFile(path, url string) error {
 	return err
 }
 
+func extractNaiveArchive(archivePath, destDir string) error {
+	lower := strings.ToLower(archivePath)
+	switch {
+	case strings.HasSuffix(lower, ".zip"):
+		return unzipNaive(archivePath, destDir)
+	case strings.HasSuffix(lower, ".tar.xz"), strings.HasSuffix(lower, ".txz"):
+		return extractTarXz(archivePath, destDir)
+	default:
+		return fmt.Errorf("unsupported archive: %s", filepath.Base(archivePath))
+	}
+}
+
+func extractTarXz(archivePath, destDir string) error {
+	tmp, err := os.MkdirTemp(destDir, "naive-extract-*")
+	if err != nil {
+		return err
+	}
+	defer os.RemoveAll(tmp)
+
+	cmd := exec.Command("tar", "-xJf", archivePath, "-C", tmp)
+	if out, err := cmd.CombinedOutput(); err != nil {
+		return fmt.Errorf("tar extract: %w (%s)", err, strings.TrimSpace(string(out)))
+	}
+
+	want := "naive"
+	var found string
+	_ = filepath.Walk(tmp, func(path string, info os.FileInfo, err error) error {
+		if err != nil || info == nil || info.IsDir() {
+			return nil
+		}
+		if info.Name() == want {
+			found = path
+		}
+		return nil
+	})
+	if found == "" {
+		return fmt.Errorf("archive does not contain %s", want)
+	}
+	dest := filepath.Join(destDir, want)
+	in, err := os.Open(found)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+	out, err := os.OpenFile(dest, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0o755)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+	if _, err := io.Copy(out, in); err != nil {
+		return err
+	}
+	return nil
+}
+
 func unzipNaive(zipPath, destDir string) error {
 	r, err := zip.OpenReader(zipPath)
 	if err != nil {