Add the Workshops page and keep each sign-up on the site.

The form is built once to the settled field set, and a valid send is saved before anyone is emailed.

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

tests/unit/publicSitemap.test.ts

@@ -10,6 +10,7 @@ describe("buildPublicSitemap", () => {
 
     expect(urls).toContain(PRODUCTION_SITE_ORIGIN);
     expect(urls).toContain(sitemapUrl("/about"));
+    expect(urls).toContain(sitemapUrl("/workshops"));
     expect(urls).toContain(sitemapUrl("/learn"));
     expect(urls).toContain(sitemapUrl("/templates"));
     expect(urls).toContain(sitemapUrl("/blog"));