fix(equipment): 回前台自动重连后同步设备连接状态

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

miniprogram/pages/equipment/equipment.ts

@@ -53,6 +53,7 @@ interface DeviceItem {
 let unsubDevicesList: (() => void) | null = null
 let unsubConnect: (() => void) | null = null
 let unsubDisconnected: (() => void) | null = null
+let unsubDeviceConnect: (() => void) | null = null
 let scanTimer: number | null = null
 
 Page({
@@ -68,18 +69,23 @@ Page({
         this.setData({ operationsEngineer: getApp<IAppOption>().globalData.operationsEngineer ?? false })
         this.loadDevices()
         this._subscribeDisconnected()
+        this._subscribeDeviceConnect()
     },
 
     onHide() {
         leFuService.stopScan()
         unsubDisconnected?.()
         unsubDisconnected = null
+        unsubDeviceConnect?.()
+        unsubDeviceConnect = null
     },
 
     onUnload() {
         leFuService.stopScan()
         unsubDisconnected?.()
         unsubDisconnected = null
+        unsubDeviceConnect?.()
+        unsubDeviceConnect = null
         unsubDevicesList?.()
         unsubDevicesList = null
         unsubConnect?.()
@@ -97,6 +103,17 @@ Page({
         })
     },
 
+    /** 订阅连接成功事件：回前台自动重连等场景下，同步页面状态为已连接 */
+    _subscribeDeviceConnect() {
+        unsubDeviceConnect?.()
+        unsubDeviceConnect = leFuService.onDeviceConnect(() => {
+            const deviceId = leFuService.lastRawDevice?.deviceId ?? ''
+            if (deviceId) {
+                this._updateStatus(deviceId, true)
+            }
+        })
+    },
+
     /** 拉取体重设备列表 */
     async loadDevices() {
         const raw = wx.getStorageSync('userInfo') as UserInfo | null
@@ -203,7 +220,6 @@ Page({
                         unsubConnect = null
                         wx.hideLoading()
                         wx.setStorageSync('connectDeviceInfo', matched.raw)
-                        this._updateStatus(targetDeviceId, true)
                     })
                 })
                 leFuService.startScan()