lab updates

_plugins/include_subdirectories.rb

@@ -0,0 +1,22 @@
+# Plugin to include markdown files from subdirectories in the labs collection
+Jekyll::Hooks.register :site, :after_init do |site|
+  # Find all markdown files in _labs and subdirectories
+  labs_dir = File.join(site.source, '_labs')
+  if Dir.exist?(labs_dir)
+    Dir.glob(File.join(labs_dir, '**', '*.md')).each do |file|
+      relative_path = file.sub(site.source + '/', '')
+      
+      # Skip if already in collection
+      next if site.collections['labs'].docs.any? { |doc| doc.path == file }
+      
+      # Create a new document for this file
+      doc = Jekyll::Document.new(file, {
+        site: site,
+        collection: site.collections['labs']
+      })
+      
+      # Add to collection
+      site.collections['labs'].docs << doc
+    end
+  end
+end