feat: 数据真实化、企业展示墙、全局手势识别与 3D 模型完善

- 数据大屏改用真实数据（xls 统计表 + 宣传册口径）；TOKEN/工具调用基于真实锚点测算
- 新增企业展示墙页（/wall，39 家全量档案 + MQTT/admin/ESP32 控制文档）
- 新增全局手势识别（GlobalVision 全局挂载 + dpm:gesture 事件分发）
- 3D 模型墙面逐间修复、去除门/过道顶棚/调试标签、房间资产不穿墙、会议室多小桌
- 侧栏企业分布扩展至 39 家完整信息，分区按官方四大孵化区域
- 语音页多轮对话展示优化、去除页脚与检测横条、背景对齐

backend/templates/admin.html

@@ -130,11 +130,26 @@
           <div class="mqtt-group-title">页面导航</div>
           <div class="mqtt-row">
             <button class="page-switch-btn" data-mqtt='{"action":"navigate","params":{"page":"/voice"}}'>语音对话</button>
+            <button class="page-switch-btn" data-mqtt='{"action":"navigate","params":{"page":"/wall"}}'>企业展示墙</button>
             <button class="page-switch-btn" data-mqtt='{"action":"navigate_rel","params":{"delta":-1}}'>← 向左</button>
             <button class="page-switch-btn" data-mqtt='{"action":"navigate_rel","params":{"delta":1}}'>向右 →</button>
           </div>
         </div>
 
+        <!-- 企业展示墙 -->
+        <div class="mqtt-group">
+          <div class="mqtt-group-title">企业展示墙（/wall）</div>
+          <div class="mqtt-row">
+            <button class="page-switch-btn" data-mqtt='{"action":"wall_pause","params":{}}'>暂停滚动</button>
+            <button class="page-switch-btn" data-mqtt='{"action":"wall_resume","params":{}}'>继续滚动</button>
+          </div>
+          <div class="mqtt-row">
+            <button class="page-switch-btn" data-mqtt='{"action":"wall_speed","params":{"speed":"slow"}}'>慢速</button>
+            <button class="page-switch-btn" data-mqtt='{"action":"wall_speed","params":{"speed":"normal"}}'>标准</button>
+            <button class="page-switch-btn" data-mqtt='{"action":"wall_speed","params":{"speed":"fast"}}'>快速</button>
+          </div>
+        </div>
+
         <!-- 视觉识别 -->
         <div class="mqtt-group">
           <div class="mqtt-group-title">人物识别（全局）</div>