refactor: 移除愈心魔方页同级 cover-view，顶栏仅用 image logo（202608280）

Co-authored-by: Cursor <cursoragent@cursor.com>

pages/yxg-magic/index.vue

@@ -3,14 +3,12 @@
 	<view class="yxg-page">
 		<view class="yxg-nav-bar" :style="navBarStyle">
 			<view class="yxg-nav-row" :style="navRowStyle">
-				<!-- #ifndef MP-WEIXIN -->
 				<image
 					class="yxg-nav-logo"
 					:src="YXG_MP_LOGO_URL"
 					mode="aspectFit"
 					:style="logoStyle"
 				/>
-				<!-- #endif -->
 			</view>
 		</view>
 		<web-view
@@ -20,16 +18,6 @@
 			@load="onWebLoad"
 			@error="onWebError"
 		/>
-		<!-- #ifdef MP-WEIXIN -->
-		<!-- 同级 cover：仅承载 logo，不在 web-view 内；普通 image 会被 web-view 盖住 -->
-		<cover-view class="yxg-logo-cover" :style="logoCoverStyle">
-			<cover-image
-				class="yxg-nav-logo"
-				:src="YXG_MP_LOGO_URL"
-				:style="coverLogoStyle"
-			/>
-		</cover-view>
-		<!-- #endif -->
 	</view>
 </template>
 
@@ -69,15 +57,11 @@ const headH = statusBarH + navBarH
 const webviewH = windowH - headH
 const logoH = Math.min(menuH, 30)
 const logoW = Math.min(Math.round((logoH * 598) / 130), Math.floor(screenW * 0.4))
-const logoLeft = Math.floor((screenW - logoW) / 2)
-const logoTop = Math.floor((navBarH - logoH) / 2)
 
 const navBarStyle = `height:${headH}px;padding-top:${statusBarH}px;box-sizing:border-box;`
 const navRowStyle = `height:${navBarH}px;`
 const logoStyle = `width:${logoW}px;height:${logoH}px;`
 const webviewStyle = `top:${headH}px;height:${webviewH}px;`
-const logoCoverStyle = `position:fixed;top:${statusBarH}px;left:0;width:${screenW}px;height:${navBarH}px;z-index:9999;`
-const coverLogoStyle = `position:absolute;left:${logoLeft}px;top:${logoTop}px;width:${logoW}px;height:${logoH}px;`
 
 const h5Url = computed(
 	() =>