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

miniprogram/pages/login/login.wxml

@@ -1,11 +1,11 @@
 <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">微信登录</view>
   </view>
 
   <view class="page-content">
-    <view class="welcome-text">欢迎使用智美</view>
+    <view class="welcome-text">欢迎使用LumiFlow</view>
 
     <view class="flower-area">
       <text class="flower">💎</text>