fix: 动作详情GIF动图播放 + 收藏按钮避让胶囊

miniprogram/pages/detail/detail.wxml

@@ -1,7 +1,7 @@
 <view class="page" wx:if="{{exercise}}">
   <navbar title="{{exercise.displayName || exercise.name}}" show-back />
 
-  <view class="favbtn" style="top: {{statusBarHeight + 12}}px;" bindtap="onToggleFav">
+  <view class="favbtn" style="top: {{favTop}}px; right: {{favRight}}px;" bindtap="onToggleFav">
     <text>{{favorited ? '♥' : '♡'}}</text>
   </view>
 
@@ -14,6 +14,8 @@
       lazy-load="true"
       binderror="onHeroError" />
     <view wx:else class="hero__ph">🏋️</view>
+    <!-- 上层叠一个动图播放器：Canvas 逐帧播放 GIF（微信 image 不播 GIF） -->
+    <gif-player wx:if="{{heroGif}}" class="hero__gif" src="{{heroGif}}" />
   </view>
 
   <view class="body section">