fix: 品牌保护+知识库全量覆盖 - 6层防御解决传销问题 + 30+产品关键词补全

test2/server/services/realtimeDialogProtocol.js

@@ -180,6 +180,18 @@ function createChatTTSTextMessage(sessionId, payload) {
   });
 }
 
+function createSayHelloMessage(sessionId, content) {
+  return marshal({
+    type: MsgType.FULL_CLIENT,
+    typeFlag: MSG_TYPE_FLAG_WITH_EVENT,
+    event: 300,
+    sessionId,
+    payload: Buffer.from(JSON.stringify({
+      content: content || '',
+    }), 'utf8'),
+  });
+}
+
 function createChatRAGTextMessage(sessionId, externalRag) {
   return marshal({
     type: MsgType.FULL_CLIENT,
@@ -201,5 +213,6 @@ module.exports = {
   createStartSessionMessage,
   createAudioMessage,
   createChatTTSTextMessage,
+  createSayHelloMessage,
   createChatRAGTextMessage,
 };