```

fix(backend): resolve merge conflicts and update API proxy configuration

- Remove leftover merge conflict markers from ChengduGamePage.vue
- Fix broken HTML structure by properly closing header and section tags
- Update proxy configuration to point to correct backend port (19000)
- Clean up import statements and remove conflicting code blocks
```

src/views/ChengduGamePage.vue

@@ -1,10 +1,7 @@
 <script setup lang="ts">
 import { computed, onBeforeUnmount, onMounted, ref, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
-<<<<<<< Updated upstream
-=======
 import deskImage from '../assets/images/desk/desk_01.png'
->>>>>>> Stashed changes
 import type { AuthSession } from '../api/authed-request'
 import { getUserInfo } from '../api/user'
 import {
@@ -746,8 +743,6 @@ onBeforeUnmount(() => {
         <button class="ghost-btn" type="button" :disabled="leaveRoomPending" @click="backHall">
           {{ leaveRoomPending ? '退出中...' : '返回大厅' }}
         </button>
-<<<<<<< Updated upstream
-=======
       </div>
 
       <div class="topbar-center">
@@ -755,13 +750,7 @@ onBeforeUnmount(() => {
           <p class="game-title">成都麻将实战桌</p>
           <p class="game-subtitle">{{ roomStatusText }} · {{ currentPhaseText }}</p>
         </div>
->>>>>>> Stashed changes
       </div>
-    </header>
-
-<<<<<<< Updated upstream
-    <section class="table-panel game-table-panel">
-=======
       <div class="topbar-right">
         <div class="status-chip net-chip">
           <span class="wifi-dot" :class="`is-${wsStatus}`"></span>
@@ -770,8 +759,9 @@ onBeforeUnmount(() => {
         <div class="status-chip clock-chip">{{ formattedClock }}</div>
         <button class="header-btn ghost-btn" type="button" @click="connectWs">重连</button>
       </div>
+    </header>
+
       <section class="table-panel game-table-panel">
->>>>>>> Stashed changes
       <div class="room-brief">
         <span class="room-brief-title">当前房间</span>
         <span class="room-brief-item">
@@ -799,11 +789,7 @@ onBeforeUnmount(() => {
           {{ startGamePending ? '开局请求中...' : '开始游戏' }}
         </button>
       </div>
-<<<<<<< Updated upstream
-      <div class="mahjong-table game-mahjong-table" :class="{ active: Boolean(roomId) }">
-=======
       </section>
-    </header>
 
     <section class="table-shell">
       <img class="table-desk" :src="deskImage" alt="" />
@@ -851,8 +837,6 @@ onBeforeUnmount(() => {
           <span class="wind east">东</span>
           <strong>{{ centerTimer }}</strong>
         </div>
-
->>>>>>> Stashed changes
         <div
           v-for="seat in seatViews"
           :key="seat.key"