Update from GitHub Actions

src/dust-client.js

@@ -310,10 +310,15 @@ export class DustClient {
    * Combines all messages into a single context string for Dust API
    */
   buildConversationContext(messages) {
-    if (!messages || !Array.isArray(messages)) {
+    if (!messages || !Array.isArray(messages) || messages.length === 0) {
       return '';
     }
 
+    // 如果只有一条消息，直接返回内容
+    if (messages.length === 1) {
+      return messages[0].content;
+    }
+
     // 将所有消息格式化为对话上下文
     const contextParts = messages.map(msg => {
       const role = msg.role === 'assistant' ? 'Assistant' :
@@ -321,11 +326,6 @@ export class DustClient {
       return `${role}: ${msg.content}`;
     });
 
-    // 如果有多条消息，添加上下文说明；如果只有一条消息，直接返回内容
-    if (messages.length === 1) {
-      return messages[0].content;
-    }
-
     // 添加当前请求的标识
     contextParts.push('Please respond to the above conversation.');