SEO audit fixes: schema, content, technical and AI readiness

- Remove restricted FAQPage schema and duplicate Organization schema
- Remove incomplete LocalBusiness schema
- Fix Organization: founder Peter Foster, foundingDate 2015
- Rewrite H1 to include target keywords
- Fix BreadcrumbList with correct page URLs
- Remove SearchAction pointing to 404 endpoint
- Simplify verbose content across 13 key paragraphs
- Promote service card headings from H3 to H2 with keyword-rich names
- Add width/height attributes to all images (CLS fix)
- Create 1200x630 OG social card image
- Update og:image, og:image:width, og:image:height meta tags
- Fix broken LinkedIn (www prefix) and Twitter (x.com) social links
- Add Free Tools footer section linking to individual tools
- Remove google-oauth-callback and /index URLs from sitemap.xml
- Add AI crawler rules to robots.txt (GPTBot, ClaudeBot, Perplexity, etc.)
- Add Disallow for oauth callback endpoints in robots.txt
- Create llms.txt for AI search engine readiness

robots.txt

@@ -14,6 +14,9 @@ Disallow: /config/
 Disallow: /database/
 Disallow: /docker/
 Disallow: /redis/
+Disallow: /google-oauth-callback
+Disallow: /google-oauth-callback.php
+Disallow: /oauth-callback.php
 
 # Block configuration and handler files
 Disallow: /*-handler.php
@@ -42,6 +45,7 @@ Sitemap: https://ukdataservices.co.uk/sitemap.xml
 Sitemap: https://ukdataservices.co.uk/sitemap-index.xml
 Sitemap: https://ukdataservices.co.uk/sitemap-blog.xml
 Sitemap: https://ukdataservices.co.uk/sitemap-services.xml
+Sitemap: https://ukdataservices.co.uk/sitemap-tools.xml
 
 # Crawl-delay for respectful crawling
 Crawl-delay: 1
@@ -58,4 +62,37 @@ Crawl-delay: 1
 User-agent: Slurp
 Allow: /
 Crawl-delay: 2
-Sitemap: https://ukdataservices.co.uk/sitemap-tools.xml
+
+# AI crawlers - explicitly allowed for citation
+User-agent: GPTBot
+Allow: /
+
+User-agent: ChatGPT-User
+Allow: /
+
+User-agent: ClaudeBot
+Allow: /
+
+User-agent: anthropic-ai
+Allow: /
+
+User-agent: PerplexityBot
+Allow: /
+
+User-agent: Google-Extended
+Allow: /
+
+User-agent: Applebot-Extended
+Allow: /
+
+User-agent: Bytespider
+Allow: /
+
+User-agent: CCBot
+Allow: /
+
+User-agent: FacebookBot
+Allow: /
+
+User-agent: Amazonbot
+Allow: /