Add VIP presence themes and custom greetings

app/Http/Controllers/ChatController.php

@@ -41,6 +41,9 @@ use Intervention\Image\ImageManager;
 
 class ChatController extends Controller
 {
+    /**
+     * 构造聊天室核心控制器所需依赖。
+     */
     public function __construct(
         private readonly ChatStateService $chatState,
         private readonly MessageFilterService $filter,
@@ -112,6 +115,7 @@ class ChatController extends Controller
 
         // 3. 广播和初始化欢迎（仅限初次进入）
         $newbieEffect = null;
+        $initialPresenceTheme = null;
 
         if (! $isAlreadyInRoom) {
             // 广播 UserJoined 事件，通知房间内的其他人
@@ -176,6 +180,7 @@ class ChatController extends Controller
             } else {
                 // 非站长：生成通用播报（有职务 > 有VIP > 普通随机词）
                 [$text, $color] = $this->broadcast->buildEntryBroadcast($user);
+                $vipPresencePayload = $this->broadcast->buildVipPresencePayload($user, 'join');
 
                 $generalWelcomeMsg = [
                     'id' => $this->chatState->nextMessageId($id),
@@ -185,13 +190,25 @@ class ChatController extends Controller
                     'content' => "<span style=\"color: {$color}; font-weight: bold;\">{$text}</span>",
                     'is_secret' => false,
                     'font_color' => $color,
-                    'action' => 'system_welcome',
+                    'action' => empty($vipPresencePayload) ? 'system_welcome' : 'vip_presence',
                     'welcome_user' => $user->username,
                     'sent_at' => now()->toDateTimeString(),
                 ];
+
+                // 当会员等级带有专属主题时，把横幅与特效字段并入系统消息，供前端展示豪华进场效果。
+                if (! empty($vipPresencePayload)) {
+                    $generalWelcomeMsg = array_merge($generalWelcomeMsg, $vipPresencePayload);
+                    $initialPresenceTheme = $vipPresencePayload;
+                }
+
                 $this->chatState->pushMessage($id, $generalWelcomeMsg);
                 // 修复：之前使用了 ->toOthers() 导致自己看不到自己的进场提示
                 broadcast(new MessageSent($id, $generalWelcomeMsg));
+
+                // 会员专属特效需要单独广播给其他在线成员，自己则在页面初始化后本地补播。
+                if (! empty($vipPresencePayload['presence_effect'])) {
+                    broadcast(new \App\Events\EffectBroadcast($id, $vipPresencePayload['presence_effect'], $user->username))->toOthers();
+                }
             }
         }
 
@@ -278,6 +295,7 @@ class ChatController extends Controller
             'user' => $user,
             'weekEffect' => $this->shopService->getActiveWeekEffect($user),
             'newbieEffect' => $newbieEffect,
+            'initialPresenceTheme' => $initialPresenceTheme,
             'historyMessages' => $historyMessages,
             'pendingProposal' => $pendingProposalData,
             'pendingDivorce' => $pendingDivorceData,