feat: complete feature gaps across all modules

Server:
- Add settings-cache with 60s TTL for feature toggle checks
- Enforce maintenance_mode on login, enable_binding on device bind

Admin console:
- Remove dead "发送通知" button from user detail
- Firmware check calls real API and compares versions

Miniprogram:
- Wear-check: dynamic battery/connected from BLE state
- Login: hide non-functional phone auth button
- Treating: show actual selected regions instead of hardcoded "全脸"
- Index: display subscription status with tap to manage
- Auto-scan: show "待检测" instead of "--" for PD data
- Agreements: tap shows "内容建设中" modal

miniprogram/pages/auto-scan/auto-scan.js

@@ -65,7 +65,7 @@ Page({
 
   parseScanResults: function (regions) {
     return regions.map(function (name) {
-      return { region: name, pd: '--' }
+      return { region: name, pd: '待检测' }
     })
   },
 

miniprogram/pages/auto-scan/auto-scan.wxml

@@ -15,6 +15,7 @@
     </view>
 
     <view class="scan-hint">请将面罩对准面部</view>
+    <view class="scan-hint" style="font-size:24rpx;color:#999;margin-top:8rpx;">连接设备后可获取皮肤数据</view>
 
     <view class="debug-actions" wx:if="{{devMode}}">
       <view class="debug-label">🔧 调试工具</view>

miniprogram/pages/index/index.wxml

@@ -23,6 +23,15 @@
       </view>
     </view>
 
+    <view class="sub-info" bindtap="onViewSubscription">
+      <view class="sub-info-left">
+        <text class="sub-info-icon">💳</text>
+        <text wx:if="{{subscription && subscription.status === 'active'}}">智能模式 · 剩余{{subRemaining}}天</text>
+        <text wx:else>未订阅智能模式</text>
+      </view>
+      <text class="sub-info-arrow">›</text>
+    </view>
+
     <button class="btn-primary" bindtap="onStartTreatment">开始护理</button>
     <button class="btn-secondary" bindtap="onManageDevice">设备管理</button>
   </view>

miniprogram/pages/index/index.wxss

@@ -18,3 +18,27 @@
 .btn-secondary::after {
   border: none;
 }
+
+.sub-info {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  background: #fff;
+  border-radius: 16rpx;
+  padding: 24rpx;
+  margin-top: 20rpx;
+}
+.sub-info-left {
+  display: flex;
+  align-items: center;
+  gap: 12rpx;
+  font-size: 28rpx;
+  color: #333;
+}
+.sub-info-icon {
+  font-size: 32rpx;
+}
+.sub-info-arrow {
+  color: #999;
+  font-size: 32rpx;
+}

miniprogram/pages/login/login.js

@@ -65,6 +65,10 @@ Page({
     })
   },
 
+  onAgreement: function () {
+    wx.showModal({ title: '提示', content: '用户协议和隐私政策内容建设中', showCancel: false })
+  },
+
   onGetPhoneNumber: function (e) {
     var self = this
     if (!e.detail || !e.detail.code) {

miniprogram/pages/login/login.wxml

@@ -18,10 +18,10 @@
     </button>
 
     <!-- 手机号授权已预留。需要时展示该按钮并隐藏上面的普通登录按钮。 -->
-    <button class="phone-btn disabled-phone-btn" open-type="getPhoneNumber" bindgetphonenumber="onGetPhoneNumber" disabled="{{loading}}">
+    <button wx:if="{{false}}" class="phone-btn disabled-phone-btn" open-type="getPhoneNumber" bindgetphonenumber="onGetPhoneNumber" disabled="{{loading}}">
       授权手机号登录（预留）
     </button>
 
-    <view class="agreement">登录即表示同意《用户协议》和《隐私政策》</view>
+    <view class="agreement" bindtap="onAgreement">登录即表示同意《用户协议》和《隐私政策》</view>
   </view>
 </view>

miniprogram/pages/subscribe-plans/subscribe-plans.js

@@ -91,6 +91,10 @@ Page({
     }).catch(function () {})
   },
 
+  onAgreement: function () {
+    wx.showModal({ title: '提示', content: '订阅协议内容建设中', showCancel: false })
+  },
+
   onSelect: function (e) {
     this.setData({ selected: e.currentTarget.dataset.plan })
   },

miniprogram/pages/subscribe-plans/subscribe-plans.wxml

@@ -40,6 +40,6 @@
     <button class="btn-primary btn-primary-gold" bindtap="onPurchase" disabled="{{purchasing}}" loading="{{purchasing}}">
       {{subscription && subscription.status === 'active' && subRemaining > 0 ? '续费' : '确认支付'}}
     </button>
-    <view class="agreement">支付即表示同意《订阅协议》</view>
+    <view class="agreement" bindtap="onAgreement">支付即表示同意《订阅协议》</view>
   </view>
 </view>

miniprogram/pages/treating/treating.js

@@ -18,19 +18,32 @@ Page({
     completed: false,
     startedAt: 0,
     devMode: false,
+    regionText: '全脸护理',
+  },
+
+  _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 '全脸护理'
+    var names = []
+    for (var bit in REGION_MAP) {
+      if (regionMask & parseInt(bit)) names.push(REGION_MAP[bit])
+    }
+    return names.length > 0 ? names.join('+') + '护理' : '全脸护理'
   },
 
   onLoad: function (options) {
     var app = getApp()
     this.setData({ statusBarHeight: app.globalData.statusBarHeight, devMode: config.__DEV__ || false })
     this._deviceId = ble.getDeviceId() || (app.globalData.currentDevice && app.globalData.currentDevice.device_id) || ''
+    var regions = parseInt(options.regions) || 0x7F
     this.setData({
-      regions: parseInt(options.regions) || 0x7F,
+      regions: regions,
       wavelength: parseInt(options.wavelength) || 2,
       duration: parseInt(options.duration) || 600000,
       mode: parseInt(options.mode) || 0,
       remainingMs: parseInt(options.duration) || 600000,
-      startedAt: Date.now()
+      startedAt: Date.now(),
+      regionText: this._getRegionText(regions)
     })
 
     this._onStatus = this.onStatus.bind(this)

miniprogram/pages/treating/treating.wxml

@@ -16,7 +16,7 @@
     </view>
 
     <view class="mode-tag-area">
-      <text class="mode-tag">{{mode === 1 ? '✨ 智能模式' : '🔄 普通模式'}} · 全脸护理</text>
+      <text class="mode-tag">{{mode === 1 ? '✨ 智能模式' : '🔄 普通模式'}} · {{regionText}}</text>
     </view>
 
     <view class="relax-card">

miniprogram/pages/wear-check/wear-check.js

@@ -7,7 +7,9 @@ Page({
     checking: false,
     result: null,
     error: '',
-    devMode: false
+    devMode: false,
+    battery: 0,
+    connected: false
   },
 
   onBack: function () {
@@ -21,6 +23,11 @@ Page({
   onLoad: function () {
     var app = getApp()
     this.setData({ statusBarHeight: app.globalData.statusBarHeight, devMode: config.__DEV__ || false })
+    var device = app.globalData.currentDevice || {}
+    this.setData({
+      battery: device.battery || 0,
+      connected: ble.isConnected()
+    })
   },
 
   onShow: function () {
@@ -34,6 +41,9 @@ Page({
     if (this._onStatus) ble.off('status', this._onStatus)
     this._onStatus = function (status) {
       self.setData({ checking: false })
+      if (status.battery !== undefined) {
+        self.setData({ battery: status.battery, connected: true })
+      }
       if (status.bind_status === 1) {
         self.setData({ result: 'ok' })
       } else {

miniprogram/pages/wear-check/wear-check.wxml

@@ -11,9 +11,10 @@
       <view class="device-row-info">
         <view class="device-row-name">
           光子美容仪
-          <text class="status-badge status-badge-green">已连接</text>
+          <text class="status-badge status-badge-green" wx:if="{{connected}}">已连接</text>
+          <text class="status-badge" style="background:#ccc;" wx:else>未连接</text>
         </view>
-        <view class="device-row-battery">电量 85%</view>
+        <view class="device-row-battery">电量 {{battery}}%</view>
       </view>
     </view>