fix: resolve multiple miniprogram bugs and extend admin console

- fix manual bind stuck at BLE scan, redirect to bind-success
- add 15s timeout and stopScan to ble-connect
- add stopScan method to ble.js
- add back-to-home button on bind-success page
- fix field name in subscribe-plans (plan -> plan_type)
- fix history.js to handle created_at field
- fix index.js to handle device name field
- add subscription route alias in request.js
- extend admin cloud function from 1 to 9 actions
- add mock mode to admin-console request.js
- remove unused discover page and legacy record function

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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

@@ -29,12 +29,12 @@ Page({
     self.setData({ purchasing: true })
 
     http.post('/api/v1/subscription/purchase', {
-      plan: self.data.selected,
+      plan_type: self.data.selected,
       payment_method: 'wechat'
     }).then(function (data) {
       return http.post('/api/v1/subscription/verify', {
         order_id: data.order_id,
-        plan: self.data.selected
+        plan_type: self.data.selected
       })
     }).then(function () {
       self.setData({ purchasing: false })