feat: skip VFD on RK3588 devices (v1.3.8)

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

lib/led.js

@@ -1,7 +1,7 @@
 'use strict';
 
 const log = require('./logger');
-const { isRK3566, readDeviceModel } = require('./led/detect');
+const { isRK3566, isRK3588, readDeviceModel } = require('./led/detect');
 
 function loadImpl() {
   const forced = String(process.env.CLAWD_LED_IMPL || '').trim().toLowerCase();
@@ -10,6 +10,8 @@ function loadImpl() {
   let name;
   if (forced) {
     name = forced;
+  } else if (isRK3588()) {
+    name = 'noop';
   } else if (isRK3566()) {
     name = 'rk3566';
   } else {