fix: BLE scan match use indexOf instead of exact equals

Fixes timeout during binding when targetDeviceId is set but exact
string match fails due to encoding differences. Also skips devices
with no name, and logs match result for every candidate.

miniprogram/services/ble/connection.js

@@ -255,10 +255,11 @@ function startScan(callbacks) {
               var d = devices[i]
               var name = (d.name || '').toUpperCase()
               var localName = (d.localName || '').toUpperCase()
+              if (!name && !localName) continue
               console.log('[BLE] 发现设备:', d.name, '| localName:', d.localName, '| deviceId:', d.deviceId)
               var matched = false
               if (targetName) {
-                matched = name === targetName || localName === targetName
+                matched = name.indexOf(targetName) !== -1 || localName.indexOf(targetName) !== -1
               } else {
                 matched = localName.indexOf('JW_') !== -1 ||
                     name.indexOf('JW_') !== -1 ||
@@ -266,8 +267,8 @@ function startScan(callbacks) {
                     name.indexOf('LIGHTMASK') !== -1 || localName.indexOf('LIGHTMASK') !== -1 ||
                     name.indexOf('SIMPLE PERIPHERAL') !== -1 || localName.indexOf('SIMPLE PERIPHERAL') !== -1
               }
+              console.log('[BLE] 匹配结果:', matched, targetName ? '(精确:' + targetName + ')' : '(模糊)')
               if (matched) {
-                console.log('[BLE] 匹配成功:', d.name, '| localName:', d.localName, targetName ? '(精确匹配)' : '(模糊匹配)')
                 wx.stopBluetoothDevicesDiscovery({})
                 if (callbacks.onFound) callbacks.onFound(d)
                 connect(d.deviceId, callbacks)