fix: comprehensive security, quality and consistency fixes

Server:
- Block startup with default JWT secrets in production
- Make subscription verify admin-only (no payment integration yet)
- Add device ownership validation on command/result, event, treatment/sync
- Remove admin token from request body fallback
- Add pageParams boundary protection (pageSize capped at 100)
- Fix COS getObjectUrl to use callback-based Promise
- Add settings key whitelist matching frontend fields
- Add user existence check before subscription creation
- Fix firmware always returning has_update:true
- Replace hardcoded trial subscription with actual DB query
- Extract shared utilities (limitClause, toMysqlDate, formatDate)

Miniprogram:
- Replace fake PD random data with placeholder
- Mark client-timer treatment completions with source field
- Disable mock.js
- Fix BLE listener leaks (save refs, cleanup in onUnload)
- Fix ble.off clearing all listeners (pass specific callback)
- Add BLE disconnect detection via onBLEConnectionStateChange
- Fix subscription status type consistency (number not string)
- Fix scan callback accumulation in ble.js
- Fix history stats accumulation across pages
- Fix subscribe-success/treatment-done hardcoded values
- Fix profile subscription view logic
- Replace purchase flow with admin-contact modal
- Add error logging in command-sync report

Admin console:
- Fix AdminLayout logout (require->import, logout->clearToken)
- Remove all mock data from production request.js
- Replace dashboard fake data with real API calls
- Replace monthly_revenue with subscription_count
- Fix subscription stats fallback (|| -> ??)
- Add token expiry tracking (7 days)
- Unify device status map and subscription status text
- Fix user page record link navigation
- Fix subscription createForm.user_id type handling
- Add error feedback in all empty catch blocks
- Remove unused remember checkbox and uview-plus dependency
- Extract common CSS to shared stylesheet (-900 lines)
- Extract formatDate to shared utils/format.js
- Show real admin name in layout header

server/src/routes/treatment.js

@@ -1,19 +1,10 @@
-const { query } = require('../lib/db')
+const { one, query, limitClause } = require('../lib/db')
 const { ok, fail } = require('../lib/response')
 const { requireUser } = require('../lib/auth')
 const { writeLog } = require('../lib/log')
-
-function toMysqlDate(value) {
-  if (!value) return null
-  const d = new Date(value)
-  if (Number.isNaN(d.getTime())) return null
-  return d.toISOString().slice(0, 19).replace('T', ' ')
-}
+const { toMysqlDate } = require('../lib/utils')
 
 function register(router) {
-  function limitClause(pageSize, offset) {
-    return ' LIMIT ' + Number(pageSize) + ' OFFSET ' + Number(offset)
-  }
 
   router.get('/api/v1/treatment/history', async ctx => {
     const user = await requireUser(ctx)
@@ -31,6 +22,8 @@ function register(router) {
     if (!user) return fail(1001, 'invalid_token')
     const d = ctx.body || {}
     if (!d.device_id) return fail(2001, 'device_id required')
+    const binding = await one('SELECT binding_id FROM bindings WHERE user_id = :user_id AND device_id = :device_id AND bind_status = 1', { user_id: user.user_id, device_id: d.device_id })
+    if (!binding) return fail(1006, 'device_not_bound')
     const sessionId = d.session_id || 'SESS' + Date.now()
     await query(
       `INSERT INTO treatment_records