fix: mock purchase now actually activates subscription

POST /api/v1/subscription/purchase only creates an order without
activating. Add POST /api/v1/subscription/mock-purchase that does
purchase + verify in one step (non-production only). Miniprogram
subscribe page now calls mock-purchase so subscriptions take effect.

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

@@ -147,7 +147,7 @@ Page({
   doPurchase: function (plan) {
     var self = this
     self.setData({ purchasing: true })
-    api.purchase(plan.key).then(function (order) {
+    api.mockPurchase(plan.key).then(function (order) {
       self.setData({ purchasing: false })
       wx.showToast({ title: '支付成功', icon: 'success' })
       setTimeout(function () {

miniprogram/utils/api.js

@@ -21,6 +21,7 @@ module.exports = {
   getSubscription: function () { return http.get('/api/v1/subscription') },
   activateTrial: function () { return http.post('/api/v1/subscription/trial') },
   purchase: function (plan) { return http.post('/api/v1/subscription/purchase', { plan: plan }) },
+  mockPurchase: function (plan) { return http.post('/api/v1/subscription/mock-purchase', { plan: plan }) },
 
   // Treatment
   getRecords: function (params) { return http.get('/api/v1/treatment/history', params) },

server/src/routes/subscription.js

@@ -46,6 +46,19 @@ router.post('/subscription/purchase', requireUser, wrap(async (req, res) => {
   res.json(ok({ order_id: orderId, payment_params: {}, plan, amount: PLANS[plan].amount }))
 }))
 
+router.post('/subscription/mock-purchase', requireUser, wrap(async (req, res) => {
+  const config = require('../config')
+  if (config.nodeEnv === 'production') return res.json(fail(2001, 'not available in production'))
+  const plan = req.body.plan || req.body.plan_type
+  if (!PLANS[plan] || plan === 'trial') return res.json(fail(2001, 'invalid plan'))
+  const p = PLANS[plan]
+  const orderId = 'MOCK' + Date.now()
+  await subscriptionDao.purchase(req.user.user_id, plan, p.amount, orderId, p.days)
+  const logDao = require('../dao/log.dao')
+  await logDao.write({ user_id: req.user.user_id, action: 'subscription_mock_purchase', detail: '模拟购买: ' + plan, ip: req.ip })
+  res.json(ok({ status: 'active', plan, remaining_days: p.days }))
+}))
+
 router.post('/subscription/trial', requireUser, wrap(async (req, res) => {
   const usedTrial = await subscriptionDao.findTrial(req.user.user_id)
   if (usedTrial) return res.json(fail(2001, '已使用过试用'))