feat: 将工作流分享改为独立页面

- 新增无后台布局的工作流分享与失效路由

- 同步分享地址并保留旧链接兼容

- 补充前后端分享链路测试

easyflow-api/easyflow-api-admin/src/main/java/tech/easyflow/admin/controller/ai/WorkflowShareController.java

@@ -109,24 +109,24 @@ public class WorkflowShareController {
      * 根据管理端来源构建工作流分享基础 URL。
      *
      * @param request HTTP 请求
-     * @return 工作流设计页 URL
+     * @return 工作流独立分享页 URL
      */
     private String buildShareBaseUrl(HttpServletRequest request) {
         String refererBaseUrl = extractFrontendBaseUrl(RequestUtil.getReferer(request));
         if (refererBaseUrl != null) {
-            return refererBaseUrl + "/ai/workflow/design";
+            return refererBaseUrl + "/share/workflow";
         }
 
         String forwardedOrigin = buildForwardedOrigin(request);
         if (forwardedOrigin != null) {
             return forwardedOrigin
                     + normalizeBasePath(firstHeaderValue(request.getHeader("X-Forwarded-Prefix")))
-                    + "/ai/workflow/design";
+                    + "/share/workflow";
         }
 
         String origin = normalizeOrigin(request.getHeader("Origin"));
         if (origin != null) {
-            return origin + normalizeBasePath(request.getContextPath()) + "/ai/workflow/design";
+            return origin + normalizeBasePath(request.getContextPath()) + "/share/workflow";
         }
         StringBuilder builder = new StringBuilder();
         builder.append(request.getScheme()).append("://").append(request.getServerName());
@@ -134,7 +134,7 @@ public class WorkflowShareController {
             builder.append(':').append(request.getServerPort());
         }
         return builder.append(normalizeBasePath(request.getContextPath()))
-                .append("/ai/workflow/design")
+                .append("/share/workflow")
                 .toString();
     }