SEO audit fixes: robots.txt, sitemap, canonical tags, schema.

Add robots.txt and sitemap.xml for crawlability.
Add rel=canonical to all 8 pages.
Add LocalBusiness JSON-LD schema to homepage.
Fix homepage title/description for keyword targeting.
Fix orphaned Q/A schema by wrapping in FAQPage.
Remove aggressive no-cache meta tags from head partial.
Remove trailing # from internal links.
Add loading=lazy to below-fold homepage images.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

public/includes/partials/footer-bottom.html

@@ -1,6 +1,6 @@
 <div class="text-center py-4">
   <p>
     Vandevliet Aerial Shots &copy; <!--# config timefmt='%Y' --><!--# echo var='date_local' -->
-    &bull; <a href="/privacy#">Privacyverklaring</a>
+    &bull; <a href="/privacy">Privacyverklaring</a>
   </p>
 </div>

public/includes/partials/head-content.html

@@ -1,9 +1,6 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
-<meta http-equiv="Pragma" content="no-cache">
-<meta http-equiv="Cache-Control" content="no-cache, must-revalidate">
-
 <meta http-equiv="Content-Security-Policy" content="
     default-src 'self';
     script-src 'self' 'unsafe-inline'