chore: remove all mock/debug code for production release

Miniprogram:
- ENV switched to 'prod' (disables __DEV__ flag)
- Deleted mock.js and test-ble-frame.js
- Removed mockBind/mockPurchase from api.js
- Removed all debug UI panels and onMock* handlers from 6 pages
- Removed mock purchase fallback in subscribe-plans
- Removed SIMPLE PERIPHERAL dev board from BLE scan

Server:
- Removed /device/mock-bind route
- Removed /subscription/mock-purchase route
- Removed dev_openid fallback in wechat.js
- Removed mockBind() from binding.dao.js
- Removed mock fallback in purchase endpoint
- NODE_ENV default changed to 'production'

Admin:
- ENV switched to 'prod'

All mock code preserved in 'test' branch for future development use.

miniprogram/pages/ble-connect/ble-connect.js

@@ -1,6 +1,5 @@
 var ble = require('../../services/ble')
 var http = require('../../utils/request')
-var config = require('../../config/env')
 var app = getApp()
 var SCAN_TIMEOUT = 15000
 
@@ -11,7 +10,6 @@ Page({
     bindToken: '',
     state: 'scanning',
     error: '',
-    devMode: false
   },
 
   onBack: function () {
@@ -26,8 +24,7 @@ Page({
     this.setData({ statusBarHeight: app.globalData.statusBarHeight })
     this.setData({
       deviceId: options.device_id || '',
-      bindToken: options.bind_token || '',
-      devMode: config.__DEV__ || false
+      bindToken: options.bind_token || ''
     })
     this.startBleConnect()
   },
@@ -110,24 +107,4 @@ Page({
     }, 1000)
   },
 
-  onMockConnect: function () {
-    var self = this
-    clearTimeout(this._scanTimer)
-    ble.stopScan()
-    self.setData({ state: 'binding' })
-    http.post('/api/v1/device/mock-bind', {
-      device_id: self.data.deviceId
-    }).then(function () {
-      self.setData({ state: 'done' })
-      wx.redirectTo({
-        url: '/pages/bind-success/bind-success?device_id=' + self.data.deviceId
-      })
-    }).catch(function (err) {
-      self.setData({ state: 'error', error: err.message || '模拟绑定失败' })
-    })
-  },
-
-  onMockBindSuccess: function () {
-    this.onMockConnect()
-  }
 })