Refactor plugin to use OOP best practices with proper namespaces and class structure

admin/js/update-source-selector.js

@@ -56,6 +56,15 @@ jQuery(document).ready(function($) {
     // Separate handler for close button to ensure it works
     $(document).on('click', '.fpden-close-modal', function(e) {
         e.preventDefault();
+        e.stopPropagation(); // Prevent event bubbling
+        $('#fpden-update-source-modal').hide();
+        $('#fpden-modal-overlay').remove();
+    });
+
+    // Direct binding to the close button for extra reliability
+    $('.fpden-close-modal').on('click', function(e) {
+        e.preventDefault();
+        e.stopPropagation(); // Prevent event bubbling
         $('#fpden-update-source-modal').hide();
         $('#fpden-modal-overlay').remove();
     });

admin/js/version-fix.js

@@ -8,7 +8,7 @@
     'use strict';
 
     // Current plugin version - this should match the version in the main plugin file
-    const CURRENT_VERSION = '2.1.1';
+    const CURRENT_VERSION = '2.2.0';
 
     // Plugin slugs to check for
     const OUR_SLUGS = ['wp-fix-plugin-does-not-exist-notices', 'fix-plugin-does-not-exist-notices'];