Fix tire search dropdown: no results + icon overlap

1. The tire data was passed to JS as flat numeric arrays via
   get_tires_as_array(), but tire-review.js accessed properties by name
   (t.brand, t.model, etc.), making every field undefined and the search
   haystack always empty. Now maps the flat rows into lightweight objects
   with named keys before localizing.

2. The search icon used a Font Awesome <i> class, but FA fonts may not
   load on the standalone page due to CSP restrictions. Replaced with an
   inline SVG so the icon always renders and never overlaps input text.

https://claude.ai/code/session_01BAc9aiNw9dh4GeqEkpkxLK

Author: claude

frontend/templates/tire-review.php

@@ -705,7 +705,7 @@
 
     <!-- Tire search -->
     <div class="rv-search-wrap">
-      <i class="fa-solid fa-magnifying-glass rv-search-icon" aria-hidden="true"></i>
+      <svg class="rv-search-icon" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><circle cx="11" cy="11" r="8"/><line x1="21" y1="21" x2="16.65" y2="16.65"/></svg>
       <input type="text" class="rv-search" id="rvTireSearch" placeholder="Search by brand, model, or size..." autocomplete="off" />
       <div class="rv-dropdown" id="rvDropdown"></div>
     </div>

includes/class-rtg-tire-review.php

@@ -84,9 +84,23 @@ public function load_template() {
             $tire_guide_url = get_permalink( $guide_pages[0] );
         }
 
+        // Build lightweight tire list with named keys for the review page JS.
+        $raw_tires    = RTG_Database::get_tires_as_array();
+        $review_tires = array();
+        foreach ( $raw_tires as $row ) {
+            $review_tires[] = array(
+                'tire_id'  => $row[0],
+                'brand'    => $row[3],
+                'model'    => $row[4],
+                'size'     => $row[1],
+                'category' => $row[5],
+                'image'    => $row[19],
+            );
+        }
+
         // Localize tire data and review config for the review page.
         wp_localize_script( 'rtg-tire-review', 'rtgTireReview', array(
-            'tires'           => RTG_Database::get_tires_as_array(),
+            'tires'           => $review_tires,
             'ajaxurl'         => admin_url( 'admin-ajax.php' ),
             'nonce'           => wp_create_nonce( 'tire_rating_nonce' ),
             'is_logged_in'    => is_user_logged_in(),