SEO fixes: author bylines, 2025 dates, phone removal, case studies, Companies House

- Assign named authors to all 14 blog articles that defaulted to Editorial Team
- Replace team-based author labels (DevOps Team, Legal Team etc) with named authors
- Update 2025 -> 2026 in ecommerce trends, buyers guide, and python pipeline titles
- Remove phone number (01692 Norfolk) from all pages and schema
- Anonymise unverifiable case study clients (TechElectronics UK, Heritage Bank UK)
- Add clickable Companies House link (08576932) to footer

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

500.php

@@ -100,7 +100,7 @@ error_log('500 Error triggered: ' . date('Y-m-d H:i:s') . ' - IP: ' . $_SERVER['
         
         <div class="contact-info">
             <h3>Need Immediate Assistance?</h3>
-            <p><strong>Phone:</strong> +44 1692 689150<br>
+            <p><strong>Phone:</strong> <br>
             <strong>Email:</strong> info@ukdataservices.co.uk</p>
         </div>
     </div>