feat(mobile): redesign vote page header layout

- Move username to top-left position
- Center the page title
- Move logout button to bottom-left
- Show connection status with latency on top-right

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/client-mobile/src/views/VoteView.vue

@@ -63,26 +63,26 @@ onMounted(() => {
     <div class="sticky-header">
       <!-- Header -->
       <header class="page-header">
-        <div class="header-left">
+        <!-- 第一行：昵称 | 节目投票 | 连接状态 -->
+        <div class="header-row header-row-top">
+          <span class="user-name">{{ connectionStore.userName || '访客' }}</span>
           <h1 class="page-title">节目投票</h1>
-          <div class="header-info">
-            <span class="user-name">{{ connectionStore.userName || '访客' }}</span>
-            <span class="info-divider">·</span>
-            <span class="status-indicator" :class="{ active: votingStore.votingOpen }">
-              <span class="status-dot" :class="{ pulsing: votingStore.votingOpen }"></span>
-              {{ votingStatusMessage }}
-            </span>
-            <span class="info-divider">·</span>
-            <span class="logout-btn" @click="handleLogout">退出</span>
-          </div>
+          <span class="status-indicator" :class="{ active: connectionStore.isConnected }">
+            <span class="status-dot" :class="{ pulsing: connectionStore.isConnected }"></span>
+            已连接 {{ connectionStore.latency }}ms
+          </span>
         </div>
-        <div class="progress-ring">
-          <svg viewBox="0 0 36 36" class="circular-progress">
-            <path class="circle-bg" d="M18 2.0845 a 15.9155 15.9155 0 0 1 0 31.831 a 15.9155 15.9155 0 0 1 0 -31.831" />
-            <path class="circle-progress" :stroke-dasharray="`${votingStore.totalTicketCount > 0 ? (votingStore.usedTicketCount / votingStore.totalTicketCount) * 100 : 0}, 100`"
-              d="M18 2.0845 a 15.9155 15.9155 0 0 1 0 31.831 a 15.9155 15.9155 0 0 1 0 -31.831" />
-          </svg>
-          <span class="progress-text">{{ votingStore.usedTicketCount }}/{{ votingStore.totalTicketCount }}</span>
+        <!-- 第二行：退出 | 进度环 -->
+        <div class="header-row header-row-bottom">
+          <span class="logout-btn" @click="handleLogout">退出</span>
+          <div class="progress-ring">
+            <svg viewBox="0 0 36 36" class="circular-progress">
+              <path class="circle-bg" d="M18 2.0845 a 15.9155 15.9155 0 0 1 0 31.831 a 15.9155 15.9155 0 0 1 0 -31.831" />
+              <path class="circle-progress" :stroke-dasharray="`${votingStore.totalTicketCount > 0 ? (votingStore.usedTicketCount / votingStore.totalTicketCount) * 100 : 0}, 100`"
+                d="M18 2.0845 a 15.9155 15.9155 0 0 1 0 31.831 a 15.9155 15.9155 0 0 1 0 -31.831" />
+            </svg>
+            <span class="progress-text">{{ votingStore.usedTicketCount }}/{{ votingStore.totalTicketCount }}</span>
+          </div>
         </div>
       </header>
     </div>
@@ -127,21 +127,46 @@ onMounted(() => {
   background: $color-surface-glass;
   backdrop-filter: $backdrop-blur;
   -webkit-backdrop-filter: $backdrop-blur;
-  padding: $spacing-lg;
-  padding-top: calc(env(safe-area-inset-top) + #{$spacing-lg});
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-}
-
-.header-left {
+  padding: $spacing-md $spacing-lg;
+  padding-top: calc(env(safe-area-inset-top) + #{$spacing-md});
   display: flex;
   flex-direction: column;
-  gap: 4px;
+  gap: 8px;
+}
+
+.header-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+}
+
+.header-row-top {
+  .user-name {
+    flex: 1;
+    text-align: left;
+  }
+  .page-title {
+    flex: 1;
+    text-align: center;
+  }
+  .status-indicator {
+    flex: 1;
+    justify-content: flex-end;
+  }
+}
+
+.header-row-bottom {
+  .logout-btn {
+    flex: 1;
+    text-align: left;
+  }
+  .progress-ring {
+    // 保持右侧
+  }
 }
 
 .page-title {
-  font-size: $font-size-2xl;
+  font-size: $font-size-lg;
   font-weight: bold;
   color: $color-text-inverse;
 }
@@ -151,22 +176,12 @@ onMounted(() => {
   color: $color-gold;
 }
 
-.header-info {
-  display: flex;
-  align-items: center;
-  gap: 6px;
-  font-size: $font-size-sm;
-}
-
-.info-divider {
-  color: rgba(255, 255, 255, 0.3);
-}
-
 .status-indicator {
   display: flex;
   align-items: center;
   gap: 4px;
   color: $color-text-secondary;
+  font-size: $font-size-xs;
 
   &.active {
     color: #22c55e;