fix(miniprogram): unify nav headers to dashboard style with tall workbench bar

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

miniprogram/components/bx-ui/bx-placeholder-page.vue

@@ -23,12 +23,14 @@ onLoad(() => {})
 
 <template>
   <view class="mp-page">
-    <view class="mp-header" :style="safeAreaStyle">
-      <view class="bx-ph__nav" @click="goBack">
-        <text class="bx-ph__back">← 工作台</text>
+    <view class="sq-nav-header" :style="safeAreaStyle">
+      <view class="sq-nav-header__nav">
+        <view class="sq-nav-header__left">
+          <text class="sq-nav-header__back" @click="goBack">←</text>
+          <text class="sq-nav-header__title">{{ title }}</text>
+        </view>
+        <view /><!-- 胶囊占位 -->
       </view>
-      <text class="mp-header__title" style="margin-top: 16rpx">{{ title }}</text>
-      <text class="mp-header__meta">报销管理 · 业务迁移中</text>
     </view>
     <view class="mp-placeholder">
       <view class="mp-placeholder__icon" />
@@ -39,14 +41,3 @@ onLoad(() => {})
     </view>
   </view>
 </template>
-
-<style lang="scss" scoped>
-.bx-ph__nav {
-  min-height: 44rpx;
-}
-.bx-ph__back {
-  color: #fff;
-  font-size: 26rpx;
-  opacity: 0.95;
-}
-</style>

miniprogram/components/bx-ui/bx-wf-config-page.vue

@@ -2,9 +2,7 @@
   <view class="bx-page">
     <view class="topbar" :style="safeAreaStyle">
       <view class="topbar-left">
-        <view class="topbar-back" @click="onBack">
-          <text class="topbar-back-icon">‹</text>
-        </view>
+        <text class="topbar-back" @click="onBack">←</text>
         <text class="topbar-title">{{ pageTitle }}</text>
       </view>
       <view class="topbar-right" />