fix: 工作流实体保留字转义 + 千问向量模型厂商映射

1. WorkflowRuntimeNode/WorkflowRuntime: input/output/status 字段加反引号，
   修复 MySQL 8.0 保留字导致 MyBatis-Plus SQL 解析异常 (#307)
2. EmbeddingModelFactory: 新增 providerCode→BeanName 映射，
   qianwen→alibailian，修复千问向量模型找不到 Bean 的问题 (#301)

Closes #307 #301

Co-Authored-By: Claude <noreply@anthropic.com>

ruoyi-modules/ruoyi-chat/src/main/java/org/ruoyi/factory/EmbeddingModelFactory.java

@@ -25,6 +25,14 @@ import java.util.concurrent.ConcurrentHashMap;
 @Slf4j
 public class EmbeddingModelFactory {
 
+    /**
+     * 厂商 providerCode → Spring Bean 名称映射
+     * 处理 providerCode 与 @Component 注册名不一致的情况
+     */
+    private static final Map<String, String> PROVIDER_BEAN_MAPPING = Map.of(
+            "qianwen", "alibailian"
+    );
+
     private final ApplicationContext applicationContext;
 
     private final IChatModelService chatModelService;
@@ -116,8 +124,10 @@ public class EmbeddingModelFactory {
      */
     private BaseEmbedModelService createModelInstance(String factory, ChatModelVo config) {
         try {
+            // 解析实际的 Bean 名称（处理 providerCode 与 @Component 注册名不一致的情况）
+            String beanName = PROVIDER_BEAN_MAPPING.getOrDefault(factory, factory);
             // 从Spring上下文中获取模型实例
-            BaseEmbedModelService model = applicationContext.getBean(factory, BaseEmbedModelService.class);
+            BaseEmbedModelService model = applicationContext.getBean(beanName, BaseEmbedModelService.class);
             // 配置模型参数
             model.configure(config);
             // 增加嵌入模型监听器