chore: 修改默认服务器列表

app/src/main/mqtt-manager.js

@@ -85,7 +85,7 @@ class MqttManager {
   initDefaultServers() {
     const defaults = [
       {
-        id: 'srv_001',
+        id: 'example_server',
         name: 'EMQX 公共测试',
         host: 'broker.emqx.io',
         port: 1883,
@@ -100,23 +100,6 @@ class MqttManager {
           { id: 'topic_default_001', topic: 'sensor/+/temperature', qos: 1, subscribed: false },
           { id: 'topic_default_002', topic: 'device/status', qos: 2, subscribed: false }
         ]
-      },
-      {
-        id: 'srv_002',
-        name: '本地 Mosquitto',
-        host: 'localhost',
-        port: 1883,
-        protocol: 'mqtt',
-        clientId: 'frost_local_' + Math.random().toString(36).slice(2, 8),
-        username: '',
-        password: '',
-        keepAlive: 60,
-        cleanSession: true,
-        status: 'disconnected',
-        topics: [
-          { id: 'topic_default_003', topic: 'home/+/light', qos: 1, subscribed: false },
-          { id: 'topic_default_004', topic: 'home/alarm', qos: 2, subscribed: false }
-        ]
       }
     ]
     defaults.forEach((s) => {