feat: 收口知识库分享链路

- 新增 shareKey 单参数 URL 分享页与失效页

- 新增知识库分享后端鉴权、审计与迁移脚本

- 在访问令牌中增加知识库分享授权入口

easyflow-ui-admin/app/src/router/guard.ts

@@ -28,6 +28,10 @@ interface NetworkConnectionLike {
 
 const CHUNK_ERROR_RELOAD_KEY = '__easyflow_chunk_error_reload_path__';
 
+function isKnowledgeShareRoute(path: string) {
+  return path === '/share/knowledge' || path === '/share/knowledge/expired';
+}
+
 function isSlowNetworkConnection() {
   if (typeof navigator === 'undefined') {
     return false;
@@ -238,6 +242,10 @@ function setupAccessGuard(router: Router) {
       return buildForcePasswordRoute();
     }
 
+    if (isKnowledgeShareRoute(to.path)) {
+      return true;
+    }
+
     // 是否已经生成过动态路由
     if (accessStore.isAccessChecked) {
       return true;