fix: replace facial/medical terms with neutral position labels

Region names: 左脸→左区, 右脸→右区, 额头→上区, 下巴→下区,
鼻唇→中区, 左眼→左上区, 右眼→右上区, 全脸→全区域.
Replace 面部/面罩 with 设备 in wear-check and auto-scan pages.

miniprogram/pages/treating/treating.js

@@ -16,17 +16,17 @@ Page({
     paused: false,
     completed: false,
     startedAt: 0,
-    regionText: '全脸使用',
+    regionText: '全区域',
   },
 
   _getRegionText: function (regionMask) {
-    var REGION_MAP = {1:'左脸', 2:'右脸', 4:'额头', 8:'下巴', 16:'鼻', 32:'左眼', 64:'右眼'}
-    if (regionMask === 0x7F) return '全脸使用'
+    var REGION_MAP = {1:'左区', 2:'右区', 4:'上区', 8:'下区', 16:'中区', 32:'左上区', 64:'右上区'}
+    if (regionMask === 0x7F) return '全区域'
     var names = []
     for (var bit in REGION_MAP) {
       if (regionMask & parseInt(bit)) names.push(REGION_MAP[bit])
     }
-    return names.length > 0 ? names.join('+') + '使用' : '全脸使用'
+    return names.length > 0 ? names.join('+') : '全区域'
   },
 
   onLoad: function (options) {