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/services/ble.js

@@ -538,6 +538,11 @@ function unbindDevice(userId) {
   return writeCommand(CMD.UNBIND, payload)
 }
 
+function stopScan() {
+  wx.stopBluetoothDevicesDiscovery({})
+  wx.offBluetoothDeviceFound()
+}
+
 function disconnect() {
   if (_deviceId) {
     wx.closeBLEConnection({ deviceId: _deviceId })
@@ -589,6 +594,7 @@ module.exports = {
   isConnected: isConnected,
   getDeviceId: getDeviceId,
   startScan: startScan,
+  stopScan: stopScan,
   connect: connect,
   disconnect: disconnect,
   on: on,