在获取到蓝牙权限后初始化蓝牙成功。但是监听蓝牙状态为不可用
// 执行蓝牙适配器初始化
  initializeBluetooth() {
    wx.showLoading({ title: '初始化蓝牙适配器...' });
    
    wx.openBluetoothAdapter({
      mode: 'central',
      success: res => {
        this.log('蓝牙适配器初始化成功');
        this.log(`蓝牙状态: ${res.available ? '可用' : '不可用'}`);
        
        // 监听蓝牙适配器状态变化
        wx.onBluetoothAdapterStateChange(res => {
          this.log(`蓝牙适配器状态变化: ${res.available ? '可用' : '不可用'}`);
        });
        
        // 监听发现新设备
        wx.onBluetoothDeviceFound(res => {
          res.devices.forEach(device => {
            const deviceId = device.deviceId;
            // 检查是否已存在
            const devices = this.data.devices;
            if (!devices.find(d => d.deviceId === deviceId)) {
              devices.push(device);
              this.log(`发现设备: ${device.name || '未知'} (${deviceId})`);
              this.setData({
                devices: devices
              });
            }
          });
        });
        
        this.setData({
          startScanBtnDisabled: false
        });
        wx.hideLoading();
      },
      fail: err => {
        this.log(`❌ 初始化蓝牙适配器失败: ${JSON.stringify(err)}`);
        wx.hideLoading();
        wx.showToast({
          title: '初始化失败',
          icon: 'none'
        });
      }
    });
  },