fix(equipment): 连接设备增加超时与失败兜底，避免加载一直转圈

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

miniprogram/pages/equipment/equipment.ts

@@ -54,7 +54,9 @@ let unsubDevicesList: (() => void) | null = null
 let unsubConnect: (() => void) | null = null
 let unsubDisconnected: (() => void) | null = null
 let unsubDeviceConnect: (() => void) | null = null
+let unsubConnectState: (() => void) | null = null
 let scanTimer: number | null = null
+let connectTimer: number | null = null
 
 Page({
     data: {
@@ -90,7 +92,10 @@ Page({
         unsubDevicesList = null
         unsubConnect?.()
         unsubConnect = null
+        unsubConnectState?.()
+        unsubConnectState = null
         if (scanTimer !== null) { clearTimeout(scanTimer); scanTimer = null }
+        if (connectTimer !== null) { clearTimeout(connectTimer); connectTimer = null }
     },
 
     /** 订阅断开事件：设备长时间未操作或意外断开时，同步页面状态为未连接 */
@@ -199,7 +204,10 @@ Page({
         unsubDevicesList = null
         unsubConnect?.()
         unsubConnect = null
+        unsubConnectState?.()
+        unsubConnectState = null
         if (scanTimer !== null) { clearTimeout(scanTimer); scanTimer = null }
+        if (connectTimer !== null) { clearTimeout(connectTimer); connectTimer = null }
 
         wx.showLoading({ title: '连接中...', mask: true })
         wx.openBluetoothAdapter({
@@ -218,12 +226,40 @@ Page({
                     unsubDevicesList?.()
                     unsubDevicesList = null
                     leFuService.stopScan()
-                    leFuService.connect(matched.raw)
+
-                    unsubConnect = leFuService.onDeviceConnect(() => {
+                    // 连接超时兜底：15 秒未连上则结束 loading
+                    connectTimer = setTimeout(() => {
+                        connectTimer = null
+                        unsubConnect?.()
+                        unsubConnect = null
+                        unsubConnectState?.()
+                        unsubConnectState = null
+                        wx.hideLoading()
+                        wx.showToast({ title: '连接失败，请重试', icon: 'none' })
+                    }, 15000)
+
+                    // 连接失败：立即结束 loading
+                    unsubConnectState = leFuService.onConnectState((state) => {
+                        if (state !== leFuService.BLUE_STATE.CONNECTFAILED) return
+                        if (connectTimer !== null) { clearTimeout(connectTimer); connectTimer = null }
+                        unsubConnectState?.()
+                        unsubConnectState = null
                         unsubConnect?.()
                         unsubConnect = null
                         wx.hideLoading()
+                        wx.showToast({ title: '连接失败，请重试', icon: 'none' })
+                    })
+
+                    leFuService.connect(matched.raw)
+                    unsubConnect = leFuService.onDeviceConnect(() => {
+                        if (connectTimer !== null) { clearTimeout(connectTimer); connectTimer = null }
+                        unsubConnect?.()
+                        unsubConnect = null
+                        unsubConnectState?.()
+                        unsubConnectState = null
+                        wx.hideLoading()
                         wx.setStorageSync('connectDeviceInfo', matched.raw)
+                        this._updateStatus(targetDeviceId, true)
                     })
                 })
                 leFuService.startScan()