fix(led,provision): AP forces WiFi(play) off; LAN uses carrier+operstate

- Monitor: every tick in ap state led.off() so play never stays on with hotspot
- hasLanCableCarrier: _ifacePhysicalLinkUp (carrier=1 and operstate not down)
- When end0/eth0 exist but link down, return false (no fallback to hasWiredCarrier)
- LAN poll 500ms

Made-with: Cursor

lib/provisioning.js

@@ -199,15 +199,16 @@ class ProvisionManager extends EventEmitter {
         this.emit('network-ready');
       }
 
-      // WiFi 灯：只在 STA 模式下反映互联网连通性；AP 模式下始终熄灭
-      if (this._state === 'sta') {
+      // 产品 WiFi 灯（OpenVFD play）：AP 全程强制熄灭，避免与其它逻辑竞态导致误亮
+      if (this._state === 'ap') {
+        led.off();
+      } else if (this._state === 'sta') {
         if (hasInternet()) {
           led.on();
         } else {
-          led.off(); // WiFi 已连接但无互联网
+          led.off(); // STA 已连热点但无互联网
         }
       }
-      // AP 模式下 led 已在 _enterAP() 中熄灭，无需重复操作
     }, MONITOR_INTERVAL_MS);
   }