Q&A: pinned questions are featured on the home page, home cards link to the full answer, newest answer first; v2.22.1

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

src/App.tsx

@@ -1260,6 +1260,7 @@ function HomepageQACallout() {
               <p className="qa-callout-question">"{q.question}"</p>
               <p className="qa-callout-answer">{q.answer.length > 220 ? q.answer.slice(0, 220).trimEnd() + '…' : q.answer}</p>
               {q.firstName && <p className="qa-callout-from">— {q.firstName}</p>}
+              <Link to={`/questions#qa-${q.id}`} className="qa-callout-more">Read the full answer →</Link>
             </div>
           ))}
         </div>