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>

includes/schema/service-schema.php

@@ -48,7 +48,7 @@ function generateServiceSchema($serviceName, $serviceDescription, $serviceUrl, $
         'availableChannel' => [
             '@type' => 'ServiceChannel',
             'serviceUrl' => 'https://ukdataservices.co.uk/quote',
-            'servicePhone' => '+44 1692 689150',
+            'servicePhone' => '',
             'availableLanguage' => 'English'
         ]
     ];