feat: 不选择模型自动选择时走原始默认逻辑；

ruoyi-modules/ruoyi-chat/src/main/java/org/ruoyi/chat/service/chat/impl/SseServiceImpl.java

@@ -125,7 +125,8 @@ public class SseServiceImpl implements ISseService {
             // 自动选择模型并获取对应的聊天服务
             IChatService chatService = autoSelectModelAndGetService(chatRequest);
 
-            // 统一重试与降级：封装启动逻辑，并通过ThreadLocal传递失败回调
+            // 仅当 autoSelectModel = true 时，才启用重试与降级
+            if (Boolean.TRUE.equals(chatRequest.getAutoSelectModel())) {
                 ChatModelVo currentModel = this.chatModelVo;
                 String currentCategory = currentModel.getCategory();
                 ChatRetryHelper.executeWithRetry(
@@ -145,6 +146,10 @@ public class SseServiceImpl implements ISseService {
                         }
                     }
                 );
+            } else {
+                // 不重试不降级，直接调用
+                chatService.chat(chatRequest, sseEmitter);
+            }
         } catch (Exception e) {
             log.error(e.getMessage(),e);
             SSEUtil.sendErrorEvent(sseEmitter,e.getMessage());