update installer script

internal/services/iscsi.go

@@ -17,8 +17,16 @@ type ISCSIService struct {
 
 // NewISCSIService creates a new iSCSI service manager
 func NewISCSIService() *ISCSIService {
+	// Try targetcli first, fallback to targetcli-fb
+	targetcliPath := "targetcli"
+	if _, err := exec.LookPath("targetcli"); err != nil {
+		if _, err := exec.LookPath("targetcli-fb"); err == nil {
+			targetcliPath = "targetcli-fb"
+		}
+	}
+
 	return &ISCSIService{
-		targetcliPath: "targetcli",
+		targetcliPath: targetcliPath,
 	}
 }