Fix all UKDS SEO cross-contamination risks

- Remove old sitemaps pointing to ukdataservices.co.uk URLs
- Delete llms.txt/llms-full.txt (had ukdataservices references)
- Replace all web scraping text in PHP files with AI automation equivalents
- Add noindex to legal boilerplate pages (privacy, terms, cookie, GDPR) to prevent duplicate content penalty
- Fix OG/Twitter social card images from ukds-* filenames to ukaiautomation-*
- Fix lead-capture.php to write logs to ukaiautomation directory
- Fix sitemap.php, quote-handler, canonical.php, related-services component

quote-handler.php

@@ -207,7 +207,7 @@ $_SESSION[$key]['count']++;
 
 // Prepare friendly labels
 $serviceLabels = [
-    'web-scraping' => 'Web Scraping',
+    'ai-automation' => 'AI Automation',
     'data-cleaning' => 'Data Cleaning',
     'api-development' => 'API Development',
     'automation' => 'Automation',