Reverse podcast highlights order; convert Q&A to full page; v1.0.6

- Podcast highlights now display newest-first (reversed array)
- Q&A page uses full site layout (header, nav, footer) instead of card/modal wrapper
- Remove redundant "Back to Site" link from QASection now that header is present

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/QASection.tsx

@@ -690,9 +690,6 @@ export default function QASection() {
   return (
     <section id="qa" className="section-qa" aria-label="Questions and answers">
       <div className="section-inner">
-        <div className="qa-top-nav">
-          <a href="/" className="qa-back-to-site">← Back to Site</a>
-        </div>
         <h2 className="section-heading">
           <span className="ornament">✦</span> Questions & Answers <span className="ornament">✦</span>
         </h2>