修复问题

yudao-module-tik/src/main/java/cn/iocoder/yudao/module/tik/dify/client/DifyClient.java

@@ -26,7 +26,7 @@ public class DifyClient {
     private DifyProperties difyProperties;
 
     /**
-     * 调用 Dify 工作流流式 API
+     * 调用 Dify 聊天流式 API
      *
      * @param apiKey         Dify API Key
      * @param content        用户输入
@@ -35,16 +35,17 @@ public class DifyClient {
      * @return 流式响应
      */
     public Flux<DifyChatRespVO> chatStream(String apiKey, String content, String systemPrompt, String conversationId) {
-        String apiUrl = difyProperties.getApiUrl() + "/v1/workflows/run";
+        String apiUrl = difyProperties.getApiUrl() + "/v1/chat-messages";
 
-        // 构建请求体
+        // 构建请求体 - 按照 Dify API 格式
         Map<String, Object> inputs = new HashMap<>();
         inputs.put("sysPrompt", systemPrompt);
-        inputs.put("userInput", content);
 
         Map<String, Object> requestBody = new HashMap<>();
         requestBody.put("inputs", inputs);
+        requestBody.put("query", content);
         requestBody.put("response_mode", "streaming");
+        requestBody.put("conversation_id", conversationId != null ? conversationId : "");
         requestBody.put("user", "user-" + System.currentTimeMillis());
 
         AtomicReference<String> responseConversationId = new AtomicReference<>(conversationId);