fix(ui): adjust preset chip stacking

src/components/AIChat/input/PresetQuestions.vue

@@ -54,7 +54,7 @@ onBeforeUnmount(() => {
 
 <template>
   <div v-if="leadingActionLabel || questions.length > 0" class="relative">
-    <div class="relative z-10 flex flex-nowrap gap-2">
+    <div class="relative flex flex-nowrap gap-2">
       <button v-if="leadingActionLabel" :class="chipClass" :disabled="props.disabled" @click="emit('leadingAction')">
         {{ leadingActionLabel }}
       </button>

src/components/common/Sidebar.vue

@@ -335,7 +335,7 @@ function getSessionAvatar(session: AnalysisSession): string | null {
   return session.groupAvatar || null
 }
 
-// 根据会话 ID 生成雅致的莫兰迪色系头像背景和文字颜色（中文注释）
+// 根据会话 ID 生成雅致的莫兰迪色系头像背景和文字颜色
 function getAvatarColorClass(session: AnalysisSession, isActive: boolean) {
   if (isActive) {
     return isPrivateChat(session)
@@ -343,7 +343,7 @@ function getAvatarColorClass(session: AnalysisSession, isActive: boolean) {
       : 'bg-primary-600 text-white dark:bg-primary-500'
   }
 
-  // 雅致的低饱和度配色方案，提升侧边栏的简洁感与品质感（中文注释）
+  // 雅致的低饱和度配色方案，提升侧边栏的简洁感与品质感
   const palettes = [
     { bg: 'bg-pink-50 dark:bg-pink-950/20', text: 'text-pink-600 dark:text-pink-400' },
     { bg: 'bg-blue-50 dark:bg-blue-950/20', text: 'text-blue-600 dark:text-blue-400' },