feat: add WeChat session authentication

pages/profile/index.wxml

@@ -18,8 +18,11 @@
   </view>
 
   <view class="identity-card surface">
-    <text class="section-title">开发身份</text>
-    <text class="identity-value">{{developmentUserId}}</text>
-    <text class="identity-note">微信登录接入前，业务数据按此开发用户隔离。</text>
+    <text class="section-title">微信身份</text>
+    <view class="connection-row">
+      <text class="connection-dot connection-{{authTone}}"></text>
+      <text class="connection-text">{{authText}}</text>
+    </view>
+    <text wx:if="{{authUserId}}" class="identity-value">{{authUserId}}</text>
   </view>
 </view>