feat: rebrand to LumiFlow across miniprogram, admin-console, and server

miniprogram/pages/register/register.wxml

@@ -1,6 +1,6 @@
 <view class="page">
   <view class="page-header page-header-pink" style="padding-top: {{statusBarHeight + 24}}px;">
-    <view class="page-header-title">智美</view>
+    <view class="page-header-title">LumiFlow</view>
     <view class="page-header-subtitle">完善个人资料</view>
   </view>