SEO: BreadcrumbList on all service pages, author bios, case study pages, internal links, address fix, llms.txt update

blog/articles/property-data-aggregation-success.php

@@ -98,6 +98,7 @@ $breadcrumbs = [
 <header class="article-header">
 <h1><?php echo htmlspecialchars($article_title); ?></h1>
                 <p class="article-lead"><?php echo htmlspecialchars($article_description); ?></p>
+<p><em>Learn more about our <a href="/services/property-data-extraction">property data extraction</a>.</em></p>
             </header>
             
             <div class="article-content">
@@ -140,6 +141,7 @@ $breadcrumbs = [
                     
                     <h3>Advanced Data Processing Pipeline</h3>
                     <p>The solution employed a sophisticated multi-stage processing pipeline:</p>
+<p><em>Learn more about our <a href="/services/financial-data-services">financial data services</a>.</em></p>
                     
                     <ol>
                         <li><strong>Intelligent Data Extraction:</strong> AI-powered content recognition adapting to website changes</li>
@@ -188,6 +190,7 @@ $breadcrumbs = [
                     <h2>Results and Business Impact</h2>
                     <h3>Quantitative Outcomes</h3>
                     <p>The automated property data aggregation system delivered exceptional results across all key performance indicators:</p>
+<p><em>Learn more about our <a href="/services/data-cleaning">data cleaning service</a>.</em></p>
                     
                     <p><strong>Data Quality Improvements:</strong></p>
                     <ul>