fix(page-data): harden structural delivery and Portal base URL

Reject /api/page-data/ legacy passthrough, verify live API before send,
and resolve delivery links to Portal (8081) instead of Vite (5173).
Add local repair/verify scripts for daily-register Page Data flow.

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

page-data-html-detect.test.mjs

@@ -4,8 +4,17 @@ import {
   assertPolicyMatchesHtmlDatasets,
   buildPageDataPolicyDatasetsFromRegistry,
   detectPageDataDatasetUsageFromHtml,
+  htmlUsesForbiddenLegacyPageDataApi,
+  htmlUsesPageDataApi,
 } from './page-data-html-detect.mjs';
 
+test('htmlUsesForbiddenLegacyPageDataApi detects /api/page-data passthrough', () => {
+  const html = `fetch('/api/page-data/daily_todo', { method: 'POST' })`;
+  assert.equal(htmlUsesForbiddenLegacyPageDataApi(html), true);
+  assert.equal(htmlUsesPageDataApi(html), true);
+  assert.equal(detectPageDataDatasetUsageFromHtml(html).size, 0);
+});
+
 test('detectPageDataDatasetUsageFromHtml finds insert and read datasets', () => {
   const html = `
     await c.insertRow('tkmind_exp_survey', { satisfaction: '满意' });