docs(site): add remote-access (Tailscale/Cloudflare/ngrok) and honest iOS pages

New high-intent SEO pages:
- /remote-access/ — step-by-step Tailscale, Cloudflare Tunnel, ngrok setups
  for reaching a self-hosted opencode server from Android anywhere. HowTo +
  FAQ + BreadcrumbList structured data.
- /ios/ — honest 'no iOS app yet' page: current Android app, why, options,
  roadmap, how to follow. FAQ + BreadcrumbList structured data.

Added to sitemap.xml; internal links from index, guide, opencode-on-phone,
and troubleshooting.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs-site/sitemap.xml

@@ -49,6 +49,18 @@
     <priority>0.8</priority>
     <lastmod>2026-06-08</lastmod>
   </url>
+  <url>
+    <loc>https://dzianisv.github.io/opencode-mobile/remote-access/</loc>
+    <changefreq>monthly</changefreq>
+    <priority>0.8</priority>
+    <lastmod>2026-06-08</lastmod>
+  </url>
+  <url>
+    <loc>https://dzianisv.github.io/opencode-mobile/ios/</loc>
+    <changefreq>monthly</changefreq>
+    <priority>0.6</priority>
+    <lastmod>2026-06-08</lastmod>
+  </url>
   <url>
     <loc>https://dzianisv.github.io/opencode-mobile/privacy/</loc>
     <changefreq>yearly</changefreq>