fix(falcon-PS9): prevent 500 error on AJAX filtering by normalizing data

Resolved a Fatal Error occurring during AJAX product listing requests (e.g., price slider).

- Issue: In PHP 8.2+, accessing properties of a 'CategoryLazyArray' object
  using array syntax (dot notation) triggers a Fatal Error.
- Cause: The Faceted Search module returns a LazyArray object during
  XHR requests, whereas standard page loads provide a native array.
- Solution: Implemented a normalization block using JSON serialization
  to flatten the object into a standard associative array. This ensures
  template syntax compatibility regardless of the request type or
  property visibility (protected vs public).

falcon/_dev/css/theme/_index.scss

@@ -5,3 +5,4 @@
 @import "layout/index";
 @import "components/index";
 
+@import "custom/custom";

falcon/_dev/css/theme/custom/_custom.scss

@@ -0,0 +1,22 @@
+/* This is the main custom SCSS file for the Falcon theme. 
+
+I am loosely following the 7 in 1 structure for better organization of the styles. Learn more here:
+https://medium.com/@diyorbekjuraev77/be-a-master-at-creating-the-7-1-sass-pattern-776fdfb5a3b1
+
+⚠️NOTE: All bootstrap overrides have been configured under themes/falcon/_dev/css/abstracts/variables/bootstrap */
+
+//Abstracts: Things used throughout the site such as utility classes and generic overrides.
+//@import "abstracts/mixins";
+
+// Components: parts of the theme itself that are not associated with a module.
+//@import "components/buttons";
+
+// Modules: Styling for specific modules.
+//@import "modules/";
+
+//Layouts: Parts of a page, such as the header, footer, etc.
+//@import "layout/footer";
+//@import "layout/header";
+
+// Pages
+//@import "pages/home";

falcon/_dev/js/theme/index.js

@@ -79,4 +79,19 @@ $(() => {
     $(".js-select-link").on("change", ({ target }) => {
         window.location.href = $(target).val();
     });
+
+    // Postcode input formatting
+    const $postCodeInput = $("input[name='postcode']");
+    $postCodeInput.on("input", function () {
+        let value = $(this).val();
+
+        // Match 4 digits followed by 2 letters (e.g., 1234AB)
+        const match = value.match(/^(\d{4})([a-zA-Z]{2})$/);
+
+        if (match) {
+            // Add space between numbers and letters
+            const formatted = `${match[1]} ${match[2]}`;
+            $(this).val(formatted);
+        }
+    });
 });

falcon/templates/_partials/header.tpl

@@ -29,7 +29,14 @@
 {/block}
 
 {block name='header_nav'}
-
+    <nav class="header-nav border-bottom bg-light py-1 d-none d-md-block">
+        <div class="container">
+            <div class="row align-items-center">
+                {hook h='displayNav1'}
+                {hook h='displayNav2'}
+            </div>
+        </div>
+    </nav>
 {/block}
 
 {block name='header_top'}
@@ -72,15 +79,13 @@
                                 {/images_block}
                             </a>
                         </div>
+
                         {hook h='displayTop'}
                     </div>
-                    <div class="row">
+
-                       <div class="col">
-                            {hook h='displayNavFullWidth'}  
-                       </div>
-                    </div>                       
                 </div>
             </div>
         </div>
     </div>
+    {hook h='displayNavFullWidth'}
 {/block}

falcon/templates/catalog/_partials/category-footer.tpl

@@ -1,5 +1,13 @@
+{* Defensive: Handles LazyArray objects for category *}
+{if is_object($category)}
+  {$category = $category|json_encode|json_decode:true}
+  {if isset($category.category)}
+    {$category = $category.category}
+  {/if}
+{/if}
+
 <div id="js-product-list-footer">
-    {if $category.additional_description && $listing.pagination.items_shown_from == 1}
+    {if isset($category.additional_description) && $category.additional_description && $listing.pagination.items_shown_from == 1}
       <div id="category-description-2" class="cms-content my-3">
         {$category.additional_description nofilter}
       </div>