Handle authenticated room instance takeover

tests/Feature/RoomBroadcastingTest.php

@@ -45,6 +45,25 @@ test('room state broadcasts synchronously expose sanitized state', function () {
         ]);
 });
 
+test('player instance replacement broadcasts the displaced instance', function () {
+    $event = new RoomStateChanged(
+        '019b8f80-37c4-71a3-b415-5f2697332c16',
+        8,
+        RoomStateChange::PlayerInstanceReplaced,
+        null,
+        42,
+        '019b8f80-37c4-71a3-b415-5f2697332c17',
+    );
+
+    expect($event->broadcastWith())->toBe([
+        'version' => 8,
+        'change' => 'player_instance_replaced',
+        'state' => null,
+        'affected_player_id' => 42,
+        'affected_instance_id' => '019b8f80-37c4-71a3-b415-5f2697332c17',
+    ]);
+});
+
 test('joining a room broadcasts the new room version', function () {
     Event::fake([RoomStateChanged::class]);
     $room = createBroadcastRoom();