修复：全员清屏广播不生效

- ScreenCleared 改用 ShouldBroadcastNow 绕过队列，避免 Horizon 未重启问题
- Echo 监听移入 DOMContentLoaded + 500ms 重试，确保 window.Echo 就绪后再注册
- 添加 console.log 便于调试

app/Events/ScreenCleared.php

@@ -14,11 +14,11 @@ namespace App\Events;
 
 use Illuminate\Broadcasting\InteractsWithSockets;
 use Illuminate\Broadcasting\PresenceChannel;
-use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcastNow;
 use Illuminate\Foundation\Events\Dispatchable;
 use Illuminate\Queue\SerializesModels;
 
-class ScreenCleared implements ShouldBroadcast
+class ScreenCleared implements ShouldBroadcastNow
 {
     use Dispatchable, InteractsWithSockets, SerializesModels;
 

resources/views/chat/partials/scripts.blade.php

@@ -514,10 +514,16 @@
         document.getElementById('room-title-display').innerText = e.detail.title;
     });
 
-    // ── 管理员全员清屏事件（直接用 Echo 监听，不依赖编译产物） ───────
+    // ── 管理员全员清屏事件（等待 Echo 就绪后监听） ───────
-    if (window.Echo) {
+    function setupScreenClearedListener() {
+        if (!window.Echo || !window.chatContext) {
+            // Echo 或 chatContext 还没就绪，延迟重试
+            setTimeout(setupScreenClearedListener, 500);
+            return;
+        }
         window.Echo.join(`room.${window.chatContext.roomId}`)
             .listen('ScreenCleared', (e) => {
+                console.log('收到全员清屏事件:', e);
                 const operator = e.operator;
 
                 // 清除公聊窗口（say1）所有消息
@@ -550,7 +556,10 @@
                     say1.scrollTop = say1.scrollHeight;
                 }
             });
+        console.log('ScreenCleared 监听器已注册');
     }
+    // DOMContentLoaded 后启动，确保 Vite 编译的 JS 已加载
+    document.addEventListener('DOMContentLoaded', setupScreenClearedListener);
 
     // ── 发送消息（Enter 发送） ───────────────────────
     document.getElementById('content').addEventListener('keydown', function(e) {