Remove Python as selling point throughout site

- about.php: title, subtitle, bio, technical background
- quote.php: title, meta, badge (10+ Years Python → 10+ Years Experience)
- case-studies/index.php: pipeline descriptions
- author-bio.php: fake author roles and bios
- article-footer.php: replace Python article links with actual AI articles
- blog/search.php: replace Python article, remove Python topic tag

includes/author-bio.php

@@ -37,9 +37,9 @@ $authors = [
     ],
     'Michael Thompson' => [
         'role' => 'Technical Lead - AI Automation',
-        'bio' => 'Michael specializes in large-scale AI Automation infrastructure and has designed data collection systems for FTSE 100 companies. He has 10+ years of experience in Python, Scrapy, and distributed systems.',
+        'bio' => 'Michael specialises in large-scale AI automation infrastructure and has designed data extraction systems for FTSE 100 companies.',
         'linkedin' => 'https://linkedin.com/company/ukaiautomation',
-        'expertise' => ['Python', 'Scrapy', 'Distributed Systems', 'AI Automation'],
+        'expertise' => ['AI Automation', 'Distributed Systems', 'LLMs', 'Data Pipelines'],
         'image' => '/assets/images/authors/michael-thompson.svg'
     ],
     'Sarah Chen' => [
@@ -57,10 +57,10 @@ $authors = [
         'image' => '/assets/images/authors/david-martinez.svg'
     ],
     'Alex Kumar' => [
-        'role' => 'Senior Python Engineer',
-        'bio' => 'Alex is a Senior Python Engineer specialising in data pipeline architecture and workflow orchestration. He has 9 years of experience building production-grade pipelines with Airflow, Prefect and Dagster for UK data teams.',
+        'role' => 'Senior AI Engineer',
+        'bio' => 'Alex specialises in data pipeline architecture and workflow orchestration, building production-grade pipelines for UK data teams.',
         'linkedin' => 'https://linkedin.com/company/ukaiautomation',
-        'expertise' => ['Python', 'Airflow', 'Prefect', 'Data Pipelines'],
+        'expertise' => ['AI Automation', 'Airflow', 'Data Pipelines', 'LLMs'],
         'image' => '/assets/images/authors/team-avatar.svg'
     ],