fixed spinner

pkg_manager/pkg_manager.go

@@ -2,6 +2,7 @@ package pkg_manager
 
 import (
 	"fmt"
+	"io"
 	"os"
 	"os/exec"
 	"strings"
@@ -294,9 +295,9 @@ func (m *Manager) execCommand(baseCmd []string, args ...string) error {
 		cmd.Stdout = os.Stdout
 		cmd.Stderr = os.Stderr
 	} else {
-		// Capture but don't display output in quiet mode
-		cmd.Stdout = nil
-		cmd.Stderr = nil
+		// Discard output in quiet mode
+		cmd.Stdout = io.Discard
+		cmd.Stderr = io.Discard
 	}
 	cmd.Stdin = os.Stdin