Homepage redesign, ep38 publish, Castopod fix, share icons, avatar gender

Website:
- Full homepage redesign: new hero with punchy tagline, social proof strip
  with real caller quotes, featured episode spotlight, clips moved up
- Remove Q&A section, cover art from hero, secondary links
- Fix share icon fill (currentColor), add .sr-only class
- Bump cache versions to v=6

Backend:
- Blacklist Celeste voice
- Fix avatar gender caching with marker files
- Fix _match_voices_to_styles() bypassing BLACKLISTED_VOICES

Publishing:
- Fix Castopod container path (/var/www/castopod/ → /app/)
- Revert CLOUDFLARE_UPLOAD_LIMIT workaround (API fixed)
- Publish episode 38

Reaper:
- Dual silence threshold (2.5s transitions, 6s same-speaker)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

website/sitemap.xml

@@ -264,4 +264,10 @@
     <changefreq>never</changefreq>
     <priority>0.7</priority>
   </url>
+  <url>
+    <loc>https://lukeattheroost.com/episode.html?slug=episode-38-secrets-lies-and-late-night-confessions</loc>
+    <lastmod>2026-03-16</lastmod>
+    <changefreq>never</changefreq>
+    <priority>0.7</priority>
+  </url>
 </urlset>