优化ai小班长聊天

app/Http/Controllers/ChatBotController.php

@@ -56,8 +56,12 @@ class ChatBotController extends Controller
         $request->validate([
             'message' => 'required|string|max:2000',
             'room_id' => 'required|integer',
+            'is_secret' => 'nullable|boolean',
         ]);
 
+        // 私聊模式：AI 回复也走悄悄话，仅发言人和 AI 可见
+        $isSecret = (bool) $request->input('is_secret', false);
+
         // 检查全局开关
         $enabled = Sysparam::getValue('chatbot_enabled', '0');
         if ($enabled !== '1') {
@@ -148,14 +152,14 @@ class ChatBotController extends Controller
                 }
             }
 
-            // 广播 AI 回复消息
+            // 广播 AI 回复消息（私聊模式下仅发言人与 AI 可见）
             $botMsg = [
                 'id' => $this->chatState->nextMessageId($roomId),
                 'room_id' => $roomId,
                 'from_user' => 'AI小班长',
                 'to_user' => $user->username,
                 'content' => $reply,
-                'is_secret' => false,
+                'is_secret' => $isSecret,
                 'font_color' => '#16a34a',
                 'action' => '',
                 'sent_at' => now()->toDateTimeString(),