docs: final review fixes — deferred backlog, doc accuracy, sample-data note

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/server.test.ts

@@ -17,6 +17,11 @@ test("index links every mockup", async () => {
   for (const m of mockups) expect(html).toContain(`/mockups/${m.slug}/`);
 });
 
+test("index shows every registry name, pitch and tryThis", async () => {
+  const html = (await (await fetch(base + "/")).text()).replaceAll("&", "&");
+  for (const m of mockups) for (const text of [m.name, m.pitch, m.tryThis]) expect(html).toContain(text);
+});
+
 for (const m of mockups) {
   test(`mockup ${m.slug} serves with credits hook`, async () => {
     const res = await fetch(`${base}/mockups/${m.slug}/`);