fix(learn): skip plaza share widget on learning assistant pages

Wire delivery path detection through portal static routes and strip baked share chrome from learn parent/child HTML.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/portal-published-page-delivery.mjs

@@ -4,6 +4,7 @@ import {
 } from '../mindspace-public-page-context.mjs';
 import {
   collectInlineScriptHashes,
+  shouldSkipPublicShareWidget,
 } from '../mindspace-public-delivery.mjs';
 import {
   buildViewerAnalyticsIdentity,
@@ -336,7 +337,15 @@ export function createPortalPublishedPageDelivery({
       !raw &&
       isFullHtml &&
       result.publication?.accessMode !==
-        'password';
+        'password' &&
+      !shouldSkipPublicShareWidget({
+        pageUrl,
+        requestPath: originalPath,
+        relativePath:
+          result.relativePath ??
+          result.pageSource?.relativePath ??
+          '',
+      });
     if (canWrapWithShell) {
       const title =
         detectPublishedPageTitle(html);

server/portal-static-delivery-routes.mjs

@@ -6,6 +6,7 @@ import {
   injectOgTags,
   renderWechatSharePreviewHtml,
 } from '../mindspace-og-tags.mjs';
+import { stripPublicFileShareWidget } from '../mindspace-public-share-widget.mjs';
 
 export function attachPortalStaticDeliveryRoutes({
   app,
@@ -161,12 +162,32 @@ export function attachPortalStaticDeliveryRoutes({
       { maxAge: '1d' },
     ),
   );
-  app.use(
-    '/learn',
-    staticMiddleware(pathApi.join(h5Root, 'public/learn'), {
-      maxAge: '0',
-    }),
-  );
+  const learnRoot = pathApi.join(h5Root, 'public/learn');
+  const learnStatic = staticMiddleware(learnRoot, { maxAge: '0' });
+  app.use('/learn', (req, res, next) => {
+    const pathname = String(req.path ?? '').split('?')[0];
+    if (!/\.html$/i.test(pathname)) {
+      return learnStatic(req, res, next);
+    }
+    const filePath = pathApi.join(learnRoot, pathname);
+    const resolvedRoot = pathApi.resolve(learnRoot);
+    const resolvedPath = pathApi.resolve(filePath);
+    if (
+      !resolvedPath.startsWith(`${resolvedRoot}${pathApi.sep}`) &&
+      resolvedPath !== resolvedRoot
+    ) {
+      return res.status(403).json({ message: '禁止访问' });
+    }
+    if (!fsApi.existsSync(resolvedPath) || !fsApi.statSync(resolvedPath).isFile()) {
+      return learnStatic(req, res, next);
+    }
+    const html = stripPublicFileShareWidget(
+      fsApi.readFileSync(resolvedPath, 'utf8'),
+    );
+    res.set('Content-Type', 'text/html; charset=utf-8');
+    res.set('Cache-Control', 'no-store');
+    return res.send(html);
+  });
 
   app.get(
     '/dev/wechat-share-preview',

server/portal-workspace-publication-delivery.mjs

@@ -288,6 +288,9 @@ export function createPortalWorkspacePublicationDelivery({
         isOwner,
         pageDataContext,
         context,
+        htmlFilePath: delivery.filePath ?? '',
+        relativePath: delivery.relativePath ?? '',
+        requestPath: req.originalUrl || req.url || '',
         userAgent:
           req.get('user-agent') || '',
         preparePublicationHtmlForEmbed,