Add MindSpace visual page editor and Plaza local Tunnel deployment.

In-preview HTML editing with undo/redo sync replaces Agent patch auto-save; Plaza runs on local Mac via Cloudflare Tunnel with embed height and CSP fixes.

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

server.mjs

@@ -46,7 +46,7 @@ import { startPlazaTasks, writebackPublications } from './plaza-tasks.mjs';
 import { createPlazaSeoService } from './plaza-seo.mjs';
 import { createPlazaOpsService, hasOpsRole } from './plaza-ops.mjs';
 import {
-  injectPlazaEmbedBootstrap,
+  preparePublicationHtmlForEmbed,
   isPlazaEmbedRequest,
   publishedPageCspForEmbed,
 } from './plaza-embed.mjs';
@@ -3213,7 +3213,7 @@ function publishedPageCsp(html, { embed = false } = {}) {
 function sendPublishedPage(res, result, { embed = false } = {}) {
   let html = result.html;
   if (embed) {
-    html = injectPlazaEmbedBootstrap(html);
+    html = preparePublicationHtmlForEmbed(html);
   }
   res.set('Content-Type', 'text/html; charset=utf-8');
   res.set('Content-Security-Policy', publishedPageCsp(html, { embed }));